wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 #ifndef P2P_MAX_CLIENT_IDLE
  51 /*
  52  * How many seconds to try to reconnect to the GO when connection in P2P client
  53  * role has been lost.
  54  */
  55 #define P2P_MAX_CLIENT_IDLE 10
  56 #endif /* P2P_MAX_CLIENT_IDLE */
  57
  58 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  59 /*
  60  * How many seconds to wait for initial 4-way handshake to get completed after
  61  * WPS provisioning step or after the re-invocation of a persistent group on a
  62  * P2P Client.
  63  */
  64 #define P2P_MAX_INITIAL_CONN_WAIT 10
  65 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  66
  67 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  68 /*
  69  * How many seconds to wait for initial 4-way handshake to get completed after
  70  * WPS provisioning step on the GO. This controls the extra time the P2P
  71  * operation is considered to be in progress (e.g., to delay other scans) after
  72  * WPS provisioning has been completed on the GO during group formation.
  73  */
  74 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  75 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  76
  77 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  78 /*
  79  * How many seconds to wait for initial 4-way handshake to get completed after
  80  * re-invocation of a persistent group on the GO when the client is expected
  81  * to connect automatically (no user interaction).
  82  */
  83 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  84 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  85
  86 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  87
  88 enum p2p_group_removal_reason {
  89         P2P_GROUP_REMOVAL_UNKNOWN,
  90         P2P_GROUP_REMOVAL_SILENT,
  91         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  92         P2P_GROUP_REMOVAL_REQUESTED,
  93         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  94         P2P_GROUP_REMOVAL_UNAVAILABLE,
  95         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  96         P2P_GROUP_REMOVAL_PSK_FAILURE,
  97         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  98 };
  99
 100
 101 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 102 static struct wpa_supplicant *
 103 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 104                          int go);
 105 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 106                                const u8 *ssid, size_t ssid_len);
 107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 108                                    const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 111                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 112                          int auto_join, int freq,
 113                          const u8 *ssid, size_t ssid_len);
 114 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 116 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 117 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 119                                              void *timeout_ctx);
 120 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 121 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 122                                        int group_added);
 123 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 124 static void wpas_stop_listen(void *ctx);
 125 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 126 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 127 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 128                                         enum wpa_driver_if_type type);
 129
 130
 131 /*
 132  * Get the number of concurrent channels that the HW can operate, but that are
 133  * currently not in use by any of the wpa_supplicant interfaces.
 134  */
 135 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 136 {
 137         int *freqs;
 138         int num, unused;
 139
 140         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 141         if (!freqs)
 142                 return -1;
 143
 144         num = get_shared_radio_freqs(wpa_s, freqs,
 145                                      wpa_s->num_multichan_concurrent);
 146         os_free(freqs);
 147
 148         unused = wpa_s->num_multichan_concurrent - num;
 149         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 150         return unused;
 151 }
 152
 153
 154 /*
 155  * Get the frequencies that are currently in use by one or more of the virtual
 156  * interfaces, and that are also valid for P2P operation.
 157  */
 158 static unsigned int
 159 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 160                           struct wpa_used_freq_data *p2p_freqs,
 161                           unsigned int len)
 162 {
 163         struct wpa_used_freq_data *freqs;
 164         unsigned int num, i, j;
 165
 166         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 167                           sizeof(struct wpa_used_freq_data));
 168         if (!freqs)
 169                 return 0;
 170
 171         num = get_shared_radio_freqs_data(wpa_s, freqs,
 172                                           wpa_s->num_multichan_concurrent);
 173
 174         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 175
 176         for (i = 0, j = 0; i < num && j < len; i++) {
 177                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 178                         p2p_freqs[j++] = freqs[i];
 179         }
 180
 181         os_free(freqs);
 182
 183         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 184
 185         return j;
 186 }
 187
 188
 189 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 190                                              int freq)
 191 {
 192         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 193                 return;
 194         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 195             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 196             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 197                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 198                            freq);
 199                 freq = 0;
 200         }
 201         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 202 }
 203
 204
 205 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 206                                       struct wpa_scan_results *scan_res)
 207 {
 208         size_t i;
 209
 210         if (wpa_s->p2p_scan_work) {
 211                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 212                 wpa_s->p2p_scan_work = NULL;
 213                 radio_work_done(work);
 214         }
 215
 216         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 217                 return;
 218
 219         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 220                    (int) scan_res->num);
 221
 222         for (i = 0; i < scan_res->num; i++) {
 223                 struct wpa_scan_res *bss = scan_res->res[i];
 224                 struct os_reltime time_tmp_age, entry_ts;
 225                 const u8 *ies;
 226                 size_t ies_len;
 227
 228                 time_tmp_age.sec = bss->age / 1000;
 229                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 230                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 231
 232                 ies = (const u8 *) (bss + 1);
 233                 ies_len = bss->ie_len;
 234                 if (bss->beacon_ie_len > 0 &&
 235                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 236                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 237                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 238                                    MACSTR, MAC2STR(bss->bssid));
 239                         ies = ies + ies_len;
 240                         ies_len = bss->beacon_ie_len;
 241                 }
 242
 243
 244                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 245                                          bss->freq, &entry_ts, bss->level,
 246                                          ies, ies_len) > 0)
 247                         break;
 248         }
 249
 250         p2p_scan_res_handled(wpa_s->global->p2p);
 251 }
 252
 253
 254 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 255 {
 256         struct wpa_supplicant *wpa_s = work->wpa_s;
 257         struct wpa_driver_scan_params *params = work->ctx;
 258         int ret;
 259
 260         if (deinit) {
 261                 if (!work->started) {
 262                         wpa_scan_free_params(params);
 263                         return;
 264                 }
 265
 266                 wpa_s->p2p_scan_work = NULL;
 267                 return;
 268         }
 269
 270         ret = wpa_drv_scan(wpa_s, params);
 271         wpa_scan_free_params(params);
 272         work->ctx = NULL;
 273         if (ret) {
 274                 radio_work_done(work);
 275                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 276                 return;
 277         }
 278
 279         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 280         os_get_reltime(&wpa_s->scan_trigger_time);
 281         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 282         wpa_s->own_scan_requested = 1;
 283         wpa_s->p2p_scan_work = work;
 284 }
 285
 286
 287 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 288                                           int freq)
 289 {
 290         if (wpa_s->global->p2p_24ghz_social_channels &&
 291             (freq == 2412 || freq == 2437 || freq == 2462)) {
 292                 /*
 293                  * Search all social channels regardless of whether these have
 294                  * been disabled for P2P operating channel use to avoid missing
 295                  * peers.
 296                  */
 297                 return 1;
 298         }
 299         return p2p_supported_freq(wpa_s->global->p2p, freq);
 300 }
 301
 302
 303 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 304                          unsigned int num_req_dev_types,
 305                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 306 {
 307         struct wpa_supplicant *wpa_s = ctx;
 308         struct wpa_driver_scan_params *params = NULL;
 309         struct wpabuf *wps_ie, *ies;
 310         unsigned int num_channels = 0;
 311         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 312         size_t ielen;
 313         u8 *n, i;
 314
 315         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 316                 return -1;
 317
 318         if (wpa_s->p2p_scan_work) {
 319                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 320                 return -1;
 321         }
 322
 323         params = os_zalloc(sizeof(*params));
 324         if (params == NULL)
 325                 return -1;
 326
 327         /* P2P Wildcard SSID */
 328         params->num_ssids = 1;
 329         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 330         if (n == NULL)
 331                 goto fail;
 332         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 333         params->ssids[0].ssid = n;
 334         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 335
 336         wpa_s->wps->dev.p2p = 1;
 337         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 338                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 339                                         num_req_dev_types, req_dev_types);
 340         if (wps_ie == NULL)
 341                 goto fail;
 342
 343         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 344         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 345         if (ies == NULL) {
 346                 wpabuf_free(wps_ie);
 347                 goto fail;
 348         }
 349         wpabuf_put_buf(ies, wps_ie);
 350         wpabuf_free(wps_ie);
 351
 352         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 353
 354         params->p2p_probe = 1;
 355         n = os_malloc(wpabuf_len(ies));
 356         if (n == NULL) {
 357                 wpabuf_free(ies);
 358                 goto fail;
 359         }
 360         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 361         params->extra_ies = n;
 362         params->extra_ies_len = wpabuf_len(ies);
 363         wpabuf_free(ies);
 364
 365         switch (type) {
 366         case P2P_SCAN_SOCIAL:
 367                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 368                                           sizeof(int));
 369                 if (params->freqs == NULL)
 370                         goto fail;
 371                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 372                         if (wpas_p2p_search_social_channel(
 373                                     wpa_s, social_channels_freq[i]))
 374                                 params->freqs[num_channels++] =
 375                                         social_channels_freq[i];
 376                 }
 377                 params->freqs[num_channels++] = 0;
 378                 break;
 379         case P2P_SCAN_FULL:
 380                 break;
 381         case P2P_SCAN_SPECIFIC:
 382                 params->freqs = os_calloc(2, sizeof(int));
 383                 if (params->freqs == NULL)
 384                         goto fail;
 385                 params->freqs[0] = freq;
 386                 params->freqs[1] = 0;
 387                 break;
 388         case P2P_SCAN_SOCIAL_PLUS_ONE:
 389                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 390                                           sizeof(int));
 391                 if (params->freqs == NULL)
 392                         goto fail;
 393                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 394                         if (wpas_p2p_search_social_channel(
 395                                     wpa_s, social_channels_freq[i]))
 396                                 params->freqs[num_channels++] =
 397                                         social_channels_freq[i];
 398                 }
 399                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 400                         params->freqs[num_channels++] = freq;
 401                 params->freqs[num_channels++] = 0;
 402                 break;
 403         }
 404
 405         radio_remove_works(wpa_s, "p2p-scan", 0);
 406         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 407                            params) < 0)
 408                 goto fail;
 409         return 0;
 410
 411 fail:
 412         wpa_scan_free_params(params);
 413         return -1;
 414 }
 415
 416
 417 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 418 {
 419         switch (p2p_group_interface) {
 420         case P2P_GROUP_INTERFACE_PENDING:
 421                 return WPA_IF_P2P_GROUP;
 422         case P2P_GROUP_INTERFACE_GO:
 423                 return WPA_IF_P2P_GO;
 424         case P2P_GROUP_INTERFACE_CLIENT:
 425                 return WPA_IF_P2P_CLIENT;
 426         }
 427
 428         return WPA_IF_P2P_GROUP;
 429 }
 430
 431
 432 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 433                                                   const u8 *ssid,
 434                                                   size_t ssid_len, int *go)
 435 {
 436         struct wpa_ssid *s;
 437
 438         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 439                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 440                         if (s->disabled != 0 || !s->p2p_group ||
 441                             s->ssid_len != ssid_len ||
 442                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 443                                 continue;
 444                         if (s->mode == WPAS_MODE_P2P_GO &&
 445                             s != wpa_s->current_ssid)
 446                                 continue;
 447                         if (go)
 448                                 *go = s->mode == WPAS_MODE_P2P_GO;
 449                         return wpa_s;
 450                 }
 451         }
 452
 453         return NULL;
 454 }
 455
 456
 457 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 458 {
 459         struct wpa_supplicant *wpa_s = eloop_ctx;
 460         wpa_printf(MSG_DEBUG,
 461                    "P2P: Complete previously requested removal of %s",
 462                    wpa_s->ifname);
 463         wpas_p2p_disconnect(wpa_s);
 464 }
 465
 466
 467 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 468                                       struct wpa_supplicant *calling_wpa_s)
 469 {
 470         if (calling_wpa_s == wpa_s && wpa_s &&
 471             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 472                 /*
 473                  * The calling wpa_s instance is going to be removed. Do that
 474                  * from an eloop callback to keep the instance available until
 475                  * the caller has returned. This my be needed, e.g., to provide
 476                  * control interface responses on the per-interface socket.
 477                  */
 478                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 479                                            wpa_s, NULL) < 0)
 480                         return -1;
 481                 return 0;
 482         }
 483
 484         return wpas_p2p_disconnect(wpa_s);
 485 }
 486
 487
 488 /* Determine total number of clients in active groups where we are the GO */
 489 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 490 {
 491         unsigned int count = 0;
 492         struct wpa_ssid *s;
 493
 494         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 495                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 496                         wpa_printf(MSG_DEBUG,
 497                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 498                                    wpa_s, s, s->disabled, s->p2p_group,
 499                                    s->mode);
 500                         if (!s->disabled && s->p2p_group &&
 501                             s->mode == WPAS_MODE_P2P_GO) {
 502                                 count += p2p_get_group_num_members(
 503                                         wpa_s->p2p_group);
 504                         }
 505                 }
 506         }
 507
 508         return count;
 509 }
 510
 511
 512 /* Find an interface for a P2P group where we are the GO */
 513 static struct wpa_supplicant *
 514 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 515 {
 516         struct wpa_supplicant *save = NULL;
 517         struct wpa_ssid *s;
 518
 519         if (!wpa_s)
 520                 return NULL;
 521
 522         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 523                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 524                         if (s->disabled || !s->p2p_group ||
 525                             s->mode != WPAS_MODE_P2P_GO)
 526                                 continue;
 527
 528                         /* Prefer a group with connected clients */
 529                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 530                                 return wpa_s;
 531                         save = wpa_s;
 532                 }
 533         }
 534
 535         /* No group with connected clients, so pick the one without (if any) */
 536         return save;
 537 }
 538
 539
 540 /* Find an active P2P group where we are the GO */
 541 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 542                                                 u8 *bssid)
 543 {
 544         struct wpa_ssid *s, *empty = NULL;
 545
 546         if (!wpa_s)
 547                 return 0;
 548
 549         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 550                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 551                         if (s->disabled || !s->p2p_group ||
 552                             s->mode != WPAS_MODE_P2P_GO)
 553                                 continue;
 554
 555                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 556                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 557                                 return s;
 558                         empty = s;
 559                 }
 560         }
 561
 562         return empty;
 563 }
 564
 565
 566 /* Find a persistent group where we are the GO */
 567 static struct wpa_ssid *
 568 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 569 {
 570         struct wpa_ssid *s;
 571
 572         for (s = wpa_s->conf->ssid; s; s = s->next) {
 573                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 574                         return s;
 575         }
 576
 577         return NULL;
 578 }
 579
 580
 581 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 582 {
 583         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 584         struct wpa_ssid *s;
 585         u8 conncap = P2PS_SETUP_NONE;
 586         unsigned int owned_members = 0;
 587         unsigned int owner = 0;
 588         unsigned int client = 0;
 589         struct wpa_supplicant *go_wpa_s;
 590         struct wpa_ssid *persistent_go;
 591         int p2p_no_group_iface;
 592
 593         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 594
 595         /*
 596          * For non-concurrent capable devices:
 597          * If persistent_go, then no new.
 598          * If GO, then no client.
 599          * If client, then no GO.
 600          */
 601         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 602         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 603         p2p_no_group_iface = wpa_s->conf->p2p_no_group_iface;
 604
 605         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 606                    go_wpa_s, persistent_go);
 607
 608         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 609              tmp_wpa_s = tmp_wpa_s->next) {
 610                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 611                         wpa_printf(MSG_DEBUG,
 612                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 613                                    tmp_wpa_s, s, s->disabled,
 614                                    s->p2p_group, s->mode);
 615                         if (!s->disabled && s->p2p_group) {
 616                                 if (s->mode == WPAS_MODE_P2P_GO) {
 617                                         owned_members +=
 618                                                 p2p_get_group_num_members(
 619                                                         tmp_wpa_s->p2p_group);
 620                                         owner++;
 621                                 } else
 622                                         client++;
 623                         }
 624                 }
 625         }
 626
 627         /* If not concurrent, restrict our choices */
 628         if (p2p_no_group_iface) {
 629                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 630
 631                 if (client)
 632                         return P2PS_SETUP_NONE;
 633
 634                 if (go_wpa_s) {
 635                         if (role == P2PS_SETUP_CLIENT ||
 636                             incoming == P2PS_SETUP_GROUP_OWNER ||
 637                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 638                                 return P2PS_SETUP_NONE;
 639
 640                         return P2PS_SETUP_GROUP_OWNER;
 641                 }
 642
 643                 if (persistent_go) {
 644                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 645                                 if (!incoming)
 646                                         return P2PS_SETUP_GROUP_OWNER |
 647                                                 P2PS_SETUP_CLIENT;
 648                                 if (incoming == P2PS_SETUP_NEW) {
 649                                         u8 r;
 650
 651                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 652                                             (r & 1))
 653                                                 return P2PS_SETUP_CLIENT;
 654                                         return P2PS_SETUP_GROUP_OWNER;
 655                                 }
 656                         }
 657                 }
 658         }
 659
 660         /* If a required role has been specified, handle it here */
 661         if (role && role != P2PS_SETUP_NEW) {
 662                 switch (incoming) {
 663                 case P2PS_SETUP_NONE:
 664                 case P2PS_SETUP_NEW:
 665                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 666                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 667                         conncap = role;
 668                         goto grp_owner;
 669
 670                 case P2PS_SETUP_GROUP_OWNER:
 671                         /*
 672                          * Must be a complimentary role - cannot be a client to
 673                          * more than one peer.
 674                          */
 675                         if (incoming == role || client)
 676                                 return P2PS_SETUP_NONE;
 677
 678                         return P2PS_SETUP_CLIENT;
 679
 680                 case P2PS_SETUP_CLIENT:
 681                         /* Must be a complimentary role */
 682                         if (incoming != role) {
 683                                 conncap = P2PS_SETUP_GROUP_OWNER;
 684                                 goto grp_owner;
 685                         }
 686
 687                 default:
 688                         return P2PS_SETUP_NONE;
 689                 }
 690         }
 691
 692         /*
 693          * For now, we only will support ownership of one group, and being a
 694          * client of one group. Therefore, if we have either an existing GO
 695          * group, or an existing client group, we will not do a new GO
 696          * negotiation, but rather try to re-use the existing groups.
 697          */
 698         switch (incoming) {
 699         case P2PS_SETUP_NONE:
 700         case P2PS_SETUP_NEW:
 701                 if (client)
 702                         conncap = P2PS_SETUP_GROUP_OWNER;
 703                 else if (!owned_members)
 704                         conncap = P2PS_SETUP_NEW;
 705                 else if (incoming == P2PS_SETUP_NONE)
 706                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 707                 else
 708                         conncap = P2PS_SETUP_CLIENT;
 709                 break;
 710
 711         case P2PS_SETUP_CLIENT:
 712                 conncap = P2PS_SETUP_GROUP_OWNER;
 713                 break;
 714
 715         case P2PS_SETUP_GROUP_OWNER:
 716                 if (!client)
 717                         conncap = P2PS_SETUP_CLIENT;
 718                 break;
 719
 720         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 721         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 722                 if (client)
 723                         conncap = P2PS_SETUP_GROUP_OWNER;
 724                 else {
 725                         u8 r;
 726
 727                         if (os_get_random(&r, sizeof(r)) < 0 ||
 728                             (r & 1))
 729                                 conncap = P2PS_SETUP_CLIENT;
 730                         else
 731                                 conncap = P2PS_SETUP_GROUP_OWNER;
 732                 }
 733                 break;
 734
 735         default:
 736                 return P2PS_SETUP_NONE;
 737         }
 738
 739 grp_owner:
 740         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 741             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 742                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 743                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 744                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 745                            owner, owned_members, conncap);
 746
 747                 s = wpas_p2p_get_persistent_go(wpa_s);
 748
 749                 if (!s && !owner && p2p_no_group_iface) {
 750                         p2p_set_intended_addr(wpa_s->global->p2p,
 751                                               wpa_s->own_addr);
 752                 } else if (!s && !owner) {
 753                         if (wpas_p2p_add_group_interface(wpa_s,
 754                                                          WPA_IF_P2P_GO) < 0) {
 755                                 wpa_printf(MSG_ERROR,
 756                                            "P2P: Failed to allocate a new interface for the group");
 757                                 return P2PS_SETUP_NONE;
 758                         }
 759                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 760                         p2p_set_intended_addr(wpa_s->global->p2p,
 761                                               wpa_s->pending_interface_addr);
 762                 }
 763         }
 764
 765         return conncap;
 766 }
 767
 768
 769 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 770                                  enum p2p_group_removal_reason removal_reason)
 771 {
 772         struct wpa_ssid *ssid;
 773         char *gtype;
 774         const char *reason;
 775
 776         ssid = wpa_s->current_ssid;
 777         if (ssid == NULL) {
 778                 /*
 779                  * The current SSID was not known, but there may still be a
 780                  * pending P2P group interface waiting for provisioning or a
 781                  * P2P group that is trying to reconnect.
 782                  */
 783                 ssid = wpa_s->conf->ssid;
 784                 while (ssid) {
 785                         if (ssid->p2p_group && ssid->disabled != 2)
 786                                 break;
 787                         ssid = ssid->next;
 788                 }
 789                 if (ssid == NULL &&
 790                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 791                 {
 792                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 793                                    "not found");
 794                         return -1;
 795                 }
 796         }
 797         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 798                 gtype = "GO";
 799         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 800                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 801                 wpa_s->reassociate = 0;
 802                 wpa_s->disconnected = 1;
 803                 gtype = "client";
 804         } else
 805                 gtype = "GO";
 806
 807         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 808                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 809
 810         if (os_strcmp(gtype, "client") == 0) {
 811                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 812                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 813                                                 wpa_s, NULL)) {
 814                         wpa_printf(MSG_DEBUG,
 815                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 816                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 817                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 818                                              wpa_s, NULL);
 819                 }
 820         }
 821
 822         if (wpa_s->cross_connect_in_use) {
 823                 wpa_s->cross_connect_in_use = 0;
 824                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 825                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 826                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 827         }
 828         switch (removal_reason) {
 829         case P2P_GROUP_REMOVAL_REQUESTED:
 830                 reason = " reason=REQUESTED";
 831                 break;
 832         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 833                 reason = " reason=FORMATION_FAILED";
 834                 break;
 835         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 836                 reason = " reason=IDLE";
 837                 break;
 838         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 839                 reason = " reason=UNAVAILABLE";
 840                 break;
 841         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 842                 reason = " reason=GO_ENDING_SESSION";
 843                 break;
 844         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 845                 reason = " reason=PSK_FAILURE";
 846                 break;
 847         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 848                 reason = " reason=FREQ_CONFLICT";
 849                 break;
 850         default:
 851                 reason = "";
 852                 break;
 853         }
 854         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 855                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 856                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 857                                wpa_s->ifname, gtype, reason);
 858         }
 859
 860         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 861                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 862         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 863                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 864         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 865                                  wpa_s->parent, NULL) > 0) {
 866                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 867                            "timeout");
 868                 wpa_s->p2p_in_provisioning = 0;
 869         }
 870
 871         wpa_s->p2p_in_invitation = 0;
 872
 873         /*
 874          * Make sure wait for the first client does not remain active after the
 875          * group has been removed.
 876          */
 877         wpa_s->global->p2p_go_wait_client.sec = 0;
 878
 879         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 880                 struct wpa_global *global;
 881                 char *ifname;
 882                 enum wpa_driver_if_type type;
 883                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 884                         wpa_s->ifname);
 885                 global = wpa_s->global;
 886                 ifname = os_strdup(wpa_s->ifname);
 887                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 888                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 889                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 890                 wpa_s = global->ifaces;
 891                 if (wpa_s && ifname)
 892                         wpa_drv_if_remove(wpa_s, type, ifname);
 893                 os_free(ifname);
 894                 return 1;
 895         }
 896
 897         if (!wpa_s->p2p_go_group_formation_completed) {
 898                 wpa_s->global->p2p_group_formation = NULL;
 899                 wpa_s->p2p_in_provisioning = 0;
 900         }
 901
 902         wpa_s->show_group_started = 0;
 903         os_free(wpa_s->go_params);
 904         wpa_s->go_params = NULL;
 905
 906         os_free(wpa_s->p2p_group_common_freqs);
 907         wpa_s->p2p_group_common_freqs = NULL;
 908         wpa_s->p2p_group_common_freqs_num = 0;
 909
 910         wpa_s->waiting_presence_resp = 0;
 911
 912         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 913         if (ssid && (ssid->p2p_group ||
 914                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 915                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 916                 int id = ssid->id;
 917                 if (ssid == wpa_s->current_ssid) {
 918                         wpa_sm_set_config(wpa_s->wpa, NULL);
 919                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 920                         wpa_s->current_ssid = NULL;
 921                 }
 922                 /*
 923                  * Networks objects created during any P2P activities are not
 924                  * exposed out as they might/will confuse certain non-P2P aware
 925                  * applications since these network objects won't behave like
 926                  * regular ones.
 927                  *
 928                  * Likewise, we don't send out network removed signals for such
 929                  * network objects.
 930                  */
 931                 wpa_config_remove_network(wpa_s->conf, id);
 932                 wpa_supplicant_clear_status(wpa_s);
 933                 wpa_supplicant_cancel_sched_scan(wpa_s);
 934         } else {
 935                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 936                            "found");
 937         }
 938         if (wpa_s->ap_iface)
 939                 wpa_supplicant_ap_deinit(wpa_s);
 940         else
 941                 wpa_drv_deinit_p2p_cli(wpa_s);
 942
 943         return 0;
 944 }
 945
 946
 947 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 948                                      u8 *go_dev_addr,
 949                                      const u8 *ssid, size_t ssid_len)
 950 {
 951         struct wpa_bss *bss;
 952         const u8 *bssid;
 953         struct wpabuf *p2p;
 954         u8 group_capab;
 955         const u8 *addr;
 956
 957         if (wpa_s->go_params)
 958                 bssid = wpa_s->go_params->peer_interface_addr;
 959         else
 960                 bssid = wpa_s->bssid;
 961
 962         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 963         if (bss == NULL && wpa_s->go_params &&
 964             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 965                 bss = wpa_bss_get_p2p_dev_addr(
 966                         wpa_s, wpa_s->go_params->peer_device_addr);
 967         if (bss == NULL) {
 968                 u8 iface_addr[ETH_ALEN];
 969                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 970                                            iface_addr) == 0)
 971                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 972         }
 973         if (bss == NULL) {
 974                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 975                            "group is persistent - BSS " MACSTR " not found",
 976                            MAC2STR(bssid));
 977                 return 0;
 978         }
 979
 980         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 981         if (p2p == NULL)
 982                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 983                                                          P2P_IE_VENDOR_TYPE);
 984         if (p2p == NULL) {
 985                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 986                            "group is persistent - BSS " MACSTR
 987                            " did not include P2P IE", MAC2STR(bssid));
 988                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 989                             (u8 *) (bss + 1), bss->ie_len);
 990                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 991                             ((u8 *) bss + 1) + bss->ie_len,
 992                             bss->beacon_ie_len);
 993                 return 0;
 994         }
 995
 996         group_capab = p2p_get_group_capab(p2p);
 997         addr = p2p_get_go_dev_addr(p2p);
 998         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 999                    "group_capab=0x%x", group_capab);
1000         if (addr) {
1001                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1002                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1003                            MAC2STR(addr));
1004         } else
1005                 os_memset(go_dev_addr, 0, ETH_ALEN);
1006         wpabuf_free(p2p);
1007
1008         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1009                    "go_dev_addr=" MACSTR,
1010                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1011
1012         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1013 }
1014
1015
1016 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1017                                            struct wpa_ssid *ssid,
1018                                            const u8 *go_dev_addr)
1019 {
1020         struct wpa_ssid *s;
1021         int changed = 0;
1022
1023         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1024                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1025         for (s = wpa_s->conf->ssid; s; s = s->next) {
1026                 if (s->disabled == 2 &&
1027                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1028                     s->ssid_len == ssid->ssid_len &&
1029                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1030                         break;
1031         }
1032
1033         if (s) {
1034                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1035                            "entry");
1036                 if (ssid->passphrase && !s->passphrase)
1037                         changed = 1;
1038                 else if (ssid->passphrase && s->passphrase &&
1039                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1040                         changed = 1;
1041         } else {
1042                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1043                            "entry");
1044                 changed = 1;
1045                 s = wpa_config_add_network(wpa_s->conf);
1046                 if (s == NULL)
1047                         return -1;
1048
1049                 /*
1050                  * Instead of network_added we emit persistent_group_added
1051                  * notification. Also to keep the defense checks in
1052                  * persistent_group obj registration method, we set the
1053                  * relevant flags in s to designate it as a persistent group.
1054                  */
1055                 s->p2p_group = 1;
1056                 s->p2p_persistent_group = 1;
1057                 wpas_notify_persistent_group_added(wpa_s, s);
1058                 wpa_config_set_network_defaults(s);
1059         }
1060
1061         s->p2p_group = 1;
1062         s->p2p_persistent_group = 1;
1063         s->disabled = 2;
1064         s->bssid_set = 1;
1065         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1066         s->mode = ssid->mode;
1067         s->auth_alg = WPA_AUTH_ALG_OPEN;
1068         s->key_mgmt = WPA_KEY_MGMT_PSK;
1069         s->proto = WPA_PROTO_RSN;
1070         s->pairwise_cipher = WPA_CIPHER_CCMP;
1071         s->export_keys = 1;
1072         if (ssid->passphrase) {
1073                 os_free(s->passphrase);
1074                 s->passphrase = os_strdup(ssid->passphrase);
1075         }
1076         if (ssid->psk_set) {
1077                 s->psk_set = 1;
1078                 os_memcpy(s->psk, ssid->psk, 32);
1079         }
1080         if (s->passphrase && !s->psk_set)
1081                 wpa_config_update_psk(s);
1082         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1083                 os_free(s->ssid);
1084                 s->ssid = os_malloc(ssid->ssid_len);
1085         }
1086         if (s->ssid) {
1087                 s->ssid_len = ssid->ssid_len;
1088                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1089         }
1090         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1091                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1092                 wpa_s->global->add_psk = NULL;
1093                 changed = 1;
1094         }
1095
1096         if (changed && wpa_s->conf->update_config &&
1097             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1098                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1099         }
1100
1101         return s->id;
1102 }
1103
1104
1105 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1106                                                  const u8 *addr)
1107 {
1108         struct wpa_ssid *ssid, *s;
1109         u8 *n;
1110         size_t i;
1111         int found = 0;
1112
1113         ssid = wpa_s->current_ssid;
1114         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1115             !ssid->p2p_persistent_group)
1116                 return;
1117
1118         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
1119                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1120                         continue;
1121
1122                 if (s->ssid_len == ssid->ssid_len &&
1123                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1124                         break;
1125         }
1126
1127         if (s == NULL)
1128                 return;
1129
1130         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1131                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1132                               ETH_ALEN) != 0)
1133                         continue;
1134
1135                 if (i == s->num_p2p_clients - 1)
1136                         return; /* already the most recent entry */
1137
1138                 /* move the entry to mark it most recent */
1139                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1140                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1141                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1142                 os_memcpy(s->p2p_client_list +
1143                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1144                           ETH_ALEN);
1145                 os_memset(s->p2p_client_list +
1146                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1147                           0xff, ETH_ALEN);
1148                 found = 1;
1149                 break;
1150         }
1151
1152         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1153                 n = os_realloc_array(s->p2p_client_list,
1154                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1155                 if (n == NULL)
1156                         return;
1157                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1158                           ETH_ALEN);
1159                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1160                           0xff, ETH_ALEN);
1161                 s->p2p_client_list = n;
1162                 s->num_p2p_clients++;
1163         } else if (!found && s->p2p_client_list) {
1164                 /* Not enough room for an additional entry - drop the oldest
1165                  * entry */
1166                 os_memmove(s->p2p_client_list,
1167                            s->p2p_client_list + 2 * ETH_ALEN,
1168                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1169                 os_memcpy(s->p2p_client_list +
1170                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1171                           addr, ETH_ALEN);
1172                 os_memset(s->p2p_client_list +
1173                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1174                           0xff, ETH_ALEN);
1175         }
1176
1177         if (wpa_s->parent->conf->update_config &&
1178             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1179                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1180 }
1181
1182
1183 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1184                                    int go, struct wpa_ssid *ssid, int freq,
1185                                    const u8 *psk, const char *passphrase,
1186                                    const u8 *go_dev_addr, int persistent,
1187                                    const char *extra)
1188 {
1189         const char *ssid_txt;
1190         char psk_txt[65];
1191
1192         if (psk)
1193                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1194         else
1195                 psk_txt[0] = '\0';
1196
1197         if (ssid)
1198                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1199         else
1200                 ssid_txt = "";
1201
1202         if (passphrase && passphrase[0] == '\0')
1203                 passphrase = NULL;
1204
1205         /*
1206          * Include PSK/passphrase only in the control interface message and
1207          * leave it out from the debug log entry.
1208          */
1209         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1210                             P2P_EVENT_GROUP_STARTED
1211                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1212                             MACSTR "%s%s",
1213                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1214                             psk ? " psk=" : "", psk_txt,
1215                             passphrase ? " passphrase=\"" : "",
1216                             passphrase ? passphrase : "",
1217                             passphrase ? "\"" : "",
1218                             MAC2STR(go_dev_addr),
1219                             persistent ? " [PERSISTENT]" : "", extra);
1220         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1221                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1222                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1223                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1224                    extra);
1225 }
1226
1227
1228 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1229                                            int success)
1230 {
1231         struct wpa_ssid *ssid;
1232         int client;
1233         int persistent;
1234         u8 go_dev_addr[ETH_ALEN];
1235         int network_id = -1;
1236
1237         /*
1238          * This callback is likely called for the main interface. Update wpa_s
1239          * to use the group interface if a new interface was created for the
1240          * group.
1241          */
1242         if (wpa_s->global->p2p_group_formation)
1243                 wpa_s = wpa_s->global->p2p_group_formation;
1244         if (wpa_s->p2p_go_group_formation_completed) {
1245                 wpa_s->global->p2p_group_formation = NULL;
1246                 wpa_s->p2p_in_provisioning = 0;
1247         }
1248         wpa_s->p2p_in_invitation = 0;
1249         wpa_s->group_formation_reported = 1;
1250
1251         if (!success) {
1252                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1253                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1254                 wpas_p2p_group_delete(wpa_s,
1255                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1256                 return;
1257         }
1258
1259         wpa_msg_global(wpa_s->parent, MSG_INFO,
1260                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1261
1262         ssid = wpa_s->current_ssid;
1263         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1264                 ssid->mode = WPAS_MODE_P2P_GO;
1265                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1266                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1267         }
1268
1269         persistent = 0;
1270         if (ssid) {
1271                 client = ssid->mode == WPAS_MODE_INFRA;
1272                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1273                         persistent = ssid->p2p_persistent_group;
1274                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1275                                   ETH_ALEN);
1276                 } else
1277                         persistent = wpas_p2p_persistent_group(wpa_s,
1278                                                                go_dev_addr,
1279                                                                ssid->ssid,
1280                                                                ssid->ssid_len);
1281         } else {
1282                 client = wpa_s->p2p_group_interface ==
1283                         P2P_GROUP_INTERFACE_CLIENT;
1284                 os_memset(go_dev_addr, 0, ETH_ALEN);
1285         }
1286
1287         wpa_s->show_group_started = 0;
1288         if (client) {
1289                 /*
1290                  * Indicate event only after successfully completed 4-way
1291                  * handshake, i.e., when the interface is ready for data
1292                  * packets.
1293                  */
1294                 wpa_s->show_group_started = 1;
1295         } else {
1296                 wpas_p2p_group_started(wpa_s, 1, ssid,
1297                                        ssid ? ssid->frequency : 0,
1298                                        ssid && ssid->passphrase == NULL &&
1299                                        ssid->psk_set ? ssid->psk : NULL,
1300                                        ssid ? ssid->passphrase : NULL,
1301                                        go_dev_addr, persistent, "");
1302                 wpas_p2p_cross_connect_setup(wpa_s);
1303                 wpas_p2p_set_group_idle_timeout(wpa_s);
1304         }
1305
1306         if (persistent)
1307                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1308                                                              ssid, go_dev_addr);
1309         else {
1310                 os_free(wpa_s->global->add_psk);
1311                 wpa_s->global->add_psk = NULL;
1312         }
1313         if (network_id < 0 && ssid)
1314                 network_id = ssid->id;
1315         if (!client) {
1316                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1317                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1318         }
1319 }
1320
1321
1322 struct send_action_work {
1323         unsigned int freq;
1324         u8 dst[ETH_ALEN];
1325         u8 src[ETH_ALEN];
1326         u8 bssid[ETH_ALEN];
1327         size_t len;
1328         unsigned int wait_time;
1329         u8 buf[0];
1330 };
1331
1332
1333 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1334                                               void *timeout_ctx)
1335 {
1336         struct wpa_supplicant *wpa_s = eloop_ctx;
1337
1338         if (!wpa_s->p2p_send_action_work)
1339                 return;
1340
1341         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1342         os_free(wpa_s->p2p_send_action_work->ctx);
1343         radio_work_done(wpa_s->p2p_send_action_work);
1344         wpa_s->p2p_send_action_work = NULL;
1345 }
1346
1347
1348 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1349 {
1350         if (wpa_s->p2p_send_action_work) {
1351                 struct send_action_work *awork;
1352                 awork = wpa_s->p2p_send_action_work->ctx;
1353                 if (awork->wait_time == 0) {
1354                         os_free(awork);
1355                         radio_work_done(wpa_s->p2p_send_action_work);
1356                         wpa_s->p2p_send_action_work = NULL;
1357                 } else {
1358                         /*
1359                          * In theory, this should not be needed, but number of
1360                          * places in the P2P code is still using non-zero wait
1361                          * time for the last Action frame in the sequence and
1362                          * some of these do not call send_action_done().
1363                          */
1364                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1365                                              wpa_s, NULL);
1366                         eloop_register_timeout(
1367                                 0, awork->wait_time * 1000,
1368                                 wpas_p2p_send_action_work_timeout,
1369                                 wpa_s, NULL);
1370                 }
1371         }
1372 }
1373
1374
1375 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1376                                            unsigned int freq,
1377                                            const u8 *dst, const u8 *src,
1378                                            const u8 *bssid,
1379                                            const u8 *data, size_t data_len,
1380                                            enum offchannel_send_action_result
1381                                            result)
1382 {
1383         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1384
1385         wpas_p2p_action_tx_clear(wpa_s);
1386
1387         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1388                 return;
1389
1390         switch (result) {
1391         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1392                 res = P2P_SEND_ACTION_SUCCESS;
1393                 break;
1394         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1395                 res = P2P_SEND_ACTION_NO_ACK;
1396                 break;
1397         case OFFCHANNEL_SEND_ACTION_FAILED:
1398                 res = P2P_SEND_ACTION_FAILED;
1399                 break;
1400         }
1401
1402         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1403
1404         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1405             wpa_s->pending_pd_before_join &&
1406             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1407              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1408             wpa_s->p2p_fallback_to_go_neg) {
1409                 wpa_s->pending_pd_before_join = 0;
1410                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1411                         "during p2p_connect-auto");
1412                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1413                                P2P_EVENT_FALLBACK_TO_GO_NEG
1414                                "reason=no-ACK-to-PD-Req");
1415                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1416                 return;
1417         }
1418 }
1419
1420
1421 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1422 {
1423         struct wpa_supplicant *wpa_s = work->wpa_s;
1424         struct send_action_work *awork = work->ctx;
1425
1426         if (deinit) {
1427                 if (work->started) {
1428                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1429                                              wpa_s, NULL);
1430                         wpa_s->p2p_send_action_work = NULL;
1431                         offchannel_send_action_done(wpa_s);
1432                 }
1433                 os_free(awork);
1434                 return;
1435         }
1436
1437         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1438                                    awork->bssid, awork->buf, awork->len,
1439                                    awork->wait_time,
1440                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1441                 os_free(awork);
1442                 radio_work_done(work);
1443                 return;
1444         }
1445         wpa_s->p2p_send_action_work = work;
1446 }
1447
1448
1449 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1450                                  unsigned int freq, const u8 *dst,
1451                                  const u8 *src, const u8 *bssid, const u8 *buf,
1452                                  size_t len, unsigned int wait_time)
1453 {
1454         struct send_action_work *awork;
1455
1456         if (wpa_s->p2p_send_action_work) {
1457                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1458                 return -1;
1459         }
1460
1461         awork = os_zalloc(sizeof(*awork) + len);
1462         if (awork == NULL)
1463                 return -1;
1464
1465         awork->freq = freq;
1466         os_memcpy(awork->dst, dst, ETH_ALEN);
1467         os_memcpy(awork->src, src, ETH_ALEN);
1468         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1469         awork->len = len;
1470         awork->wait_time = wait_time;
1471         os_memcpy(awork->buf, buf, len);
1472
1473         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1474                            wpas_send_action_cb, awork) < 0) {
1475                 os_free(awork);
1476                 return -1;
1477         }
1478
1479         return 0;
1480 }
1481
1482
1483 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1484                             const u8 *src, const u8 *bssid, const u8 *buf,
1485                             size_t len, unsigned int wait_time)
1486 {
1487         struct wpa_supplicant *wpa_s = ctx;
1488         int listen_freq = -1, send_freq = -1;
1489
1490         if (wpa_s->p2p_listen_work)
1491                 listen_freq = wpa_s->p2p_listen_work->freq;
1492         if (wpa_s->p2p_send_action_work)
1493                 send_freq = wpa_s->p2p_send_action_work->freq;
1494         if (listen_freq != (int) freq && send_freq != (int) freq) {
1495                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1496                            listen_freq, send_freq);
1497                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1498                                              len, wait_time);
1499         }
1500
1501         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1502         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1503                                       wait_time,
1504                                       wpas_p2p_send_action_tx_status, 1);
1505 }
1506
1507
1508 static void wpas_send_action_done(void *ctx)
1509 {
1510         struct wpa_supplicant *wpa_s = ctx;
1511
1512         if (wpa_s->p2p_send_action_work) {
1513                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1514                                      wpa_s, NULL);
1515                 os_free(wpa_s->p2p_send_action_work->ctx);
1516                 radio_work_done(wpa_s->p2p_send_action_work);
1517                 wpa_s->p2p_send_action_work = NULL;
1518         }
1519
1520         offchannel_send_action_done(wpa_s);
1521 }
1522
1523
1524 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1525                                     struct p2p_go_neg_results *params)
1526 {
1527         if (wpa_s->go_params == NULL) {
1528                 wpa_s->go_params = os_malloc(sizeof(*params));
1529                 if (wpa_s->go_params == NULL)
1530                         return -1;
1531         }
1532         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1533         return 0;
1534 }
1535
1536
1537 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1538                                     struct p2p_go_neg_results *res)
1539 {
1540         wpa_s->group_formation_reported = 0;
1541         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1542                    " dev_addr " MACSTR " wps_method %d",
1543                    MAC2STR(res->peer_interface_addr),
1544                    MAC2STR(res->peer_device_addr), res->wps_method);
1545         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1546                           res->ssid, res->ssid_len);
1547         wpa_supplicant_ap_deinit(wpa_s);
1548         wpas_copy_go_neg_results(wpa_s, res);
1549         if (res->wps_method == WPS_PBC) {
1550                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1551 #ifdef CONFIG_WPS_NFC
1552         } else if (res->wps_method == WPS_NFC) {
1553                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1554                                    res->peer_interface_addr,
1555                                    wpa_s->parent->p2p_oob_dev_pw,
1556                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1557                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1558                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1559                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1560                                    NULL,
1561                                    NULL, 0, 0);
1562 #endif /* CONFIG_WPS_NFC */
1563         } else {
1564                 u16 dev_pw_id = DEV_PW_DEFAULT;
1565                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1566                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1567                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1568                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1569                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1570                                    wpa_s->p2p_pin, 1, dev_pw_id);
1571         }
1572 }
1573
1574
1575 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1576                                   struct wpa_ssid *ssid)
1577 {
1578         struct wpa_ssid *persistent;
1579         struct psk_list_entry *psk;
1580         struct hostapd_data *hapd;
1581
1582         if (!wpa_s->ap_iface)
1583                 return;
1584
1585         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1586                                              ssid->ssid_len);
1587         if (persistent == NULL)
1588                 return;
1589
1590         hapd = wpa_s->ap_iface->bss[0];
1591
1592         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1593                          list) {
1594                 struct hostapd_wpa_psk *hpsk;
1595
1596                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1597                         MACSTR " psk=%d",
1598                         MAC2STR(psk->addr), psk->p2p);
1599                 hpsk = os_zalloc(sizeof(*hpsk));
1600                 if (hpsk == NULL)
1601                         break;
1602                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1603                 if (psk->p2p)
1604                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1605                 else
1606                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1607                 hpsk->next = hapd->conf->ssid.wpa_psk;
1608                 hapd->conf->ssid.wpa_psk = hpsk;
1609         }
1610 }
1611
1612
1613 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1614 {
1615         unsigned int i;
1616
1617         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1618                 wpa_s->p2p_group_common_freqs_num);
1619
1620         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1621                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1622                         i, wpa_s->p2p_group_common_freqs[i]);
1623 }
1624
1625
1626 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1627                                            struct p2p_go_neg_results *params)
1628 {
1629         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1630
1631         wpa_s->p2p_group_common_freqs_num = 0;
1632         os_free(wpa_s->p2p_group_common_freqs);
1633         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1634         if (!wpa_s->p2p_group_common_freqs)
1635                 return;
1636
1637         for (i = 0; i < len; i++) {
1638                 if (!wpa_s->go_params->freq_list[i])
1639                         break;
1640                 wpa_s->p2p_group_common_freqs[i] =
1641                         wpa_s->go_params->freq_list[i];
1642         }
1643         wpa_s->p2p_group_common_freqs_num = i;
1644 }
1645
1646
1647 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1648 {
1649 #ifndef CONFIG_NO_CONFIG_WRITE
1650         if (wpa_s->parent->conf->update_config &&
1651             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1652                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1653 #endif /* CONFIG_NO_CONFIG_WRITE */
1654 }
1655
1656
1657 static void p2p_go_configured(void *ctx, void *data)
1658 {
1659         struct wpa_supplicant *wpa_s = ctx;
1660         struct p2p_go_neg_results *params = data;
1661         struct wpa_ssid *ssid;
1662         int network_id = -1;
1663
1664         p2p_go_save_group_common_freqs(wpa_s, params);
1665         p2p_go_dump_common_freqs(wpa_s);
1666
1667         ssid = wpa_s->current_ssid;
1668         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1669                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1670                 if (wpa_s->global->p2p_group_formation == wpa_s)
1671                         wpa_s->global->p2p_group_formation = NULL;
1672                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1673                                        params->passphrase[0] == '\0' ?
1674                                        params->psk : NULL,
1675                                        params->passphrase,
1676                                        wpa_s->global->p2p_dev_addr,
1677                                        params->persistent_group, "");
1678                 wpa_s->group_formation_reported = 1;
1679
1680                 if (wpa_s->parent->p2ps_join_addr_valid) {
1681                         wpa_dbg(wpa_s, MSG_DEBUG,
1682                                 "P2PS: Setting default PIN for " MACSTR,
1683                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1684                         wpa_supplicant_ap_wps_pin(wpa_s,
1685                                                   wpa_s->parent->p2ps_join_addr,
1686                                                   "12345670", NULL, 0, 0);
1687                         wpa_s->parent->p2ps_join_addr_valid = 0;
1688                 }
1689
1690                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1691                 if (params->persistent_group) {
1692                         network_id = wpas_p2p_store_persistent_group(
1693                                 wpa_s->parent, ssid,
1694                                 wpa_s->global->p2p_dev_addr);
1695                         wpas_p2p_add_psk_list(wpa_s, ssid);
1696                 }
1697                 if (network_id < 0)
1698                         network_id = ssid->id;
1699                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1700                 wpas_p2p_cross_connect_setup(wpa_s);
1701                 wpas_p2p_set_group_idle_timeout(wpa_s);
1702
1703                 if (wpa_s->p2p_first_connection_timeout) {
1704                         wpa_dbg(wpa_s, MSG_DEBUG,
1705                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1706                                 wpa_s->p2p_first_connection_timeout);
1707                         wpa_s->p2p_go_group_formation_completed = 0;
1708                         wpa_s->global->p2p_group_formation = wpa_s;
1709                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1710                                              wpa_s->parent, NULL);
1711                         eloop_register_timeout(
1712                                 wpa_s->p2p_first_connection_timeout, 0,
1713                                 wpas_p2p_group_formation_timeout,
1714                                 wpa_s->parent, NULL);
1715                 }
1716
1717                 return;
1718         }
1719
1720         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1721         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1722                                               params->peer_interface_addr)) {
1723                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1724                            "filtering");
1725                 return;
1726         }
1727         if (params->wps_method == WPS_PBC) {
1728                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1729                                           params->peer_device_addr);
1730 #ifdef CONFIG_WPS_NFC
1731         } else if (params->wps_method == WPS_NFC) {
1732                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1733                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1734                     !wpa_s->parent->p2p_oob_dev_pw) {
1735                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1736                         return;
1737                 }
1738                 wpas_ap_wps_add_nfc_pw(
1739                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1740                         wpa_s->parent->p2p_oob_dev_pw,
1741                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1742                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1743 #endif /* CONFIG_WPS_NFC */
1744         } else if (wpa_s->p2p_pin[0])
1745                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1746                                           wpa_s->p2p_pin, NULL, 0, 0);
1747         os_free(wpa_s->go_params);
1748         wpa_s->go_params = NULL;
1749 }
1750
1751
1752 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1753                               struct p2p_go_neg_results *params,
1754                               int group_formation)
1755 {
1756         struct wpa_ssid *ssid;
1757
1758         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1759         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1760                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1761                         "results");
1762                 return;
1763         }
1764
1765         ssid = wpa_config_add_network(wpa_s->conf);
1766         if (ssid == NULL) {
1767                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1768                 return;
1769         }
1770
1771         wpa_s->show_group_started = 0;
1772         wpa_s->p2p_go_group_formation_completed = 0;
1773         wpa_s->group_formation_reported = 0;
1774
1775         wpa_config_set_network_defaults(ssid);
1776         ssid->temporary = 1;
1777         ssid->p2p_group = 1;
1778         ssid->p2p_persistent_group = params->persistent_group;
1779         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1780                 WPAS_MODE_P2P_GO;
1781         ssid->frequency = params->freq;
1782         ssid->ht40 = params->ht40;
1783         ssid->vht = params->vht;
1784         ssid->ssid = os_zalloc(params->ssid_len + 1);
1785         if (ssid->ssid) {
1786                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1787                 ssid->ssid_len = params->ssid_len;
1788         }
1789         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1790         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1791         ssid->proto = WPA_PROTO_RSN;
1792         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1793         ssid->group_cipher = WPA_CIPHER_CCMP;
1794         if (params->freq > 56160) {
1795                 /*
1796                  * Enable GCMP instead of CCMP as pairwise_cipher and
1797                  * group_cipher in 60 GHz.
1798                  */
1799                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1800                 ssid->group_cipher = WPA_CIPHER_GCMP;
1801         }
1802         if (os_strlen(params->passphrase) > 0) {
1803                 ssid->passphrase = os_strdup(params->passphrase);
1804                 if (ssid->passphrase == NULL) {
1805                         wpa_msg_global(wpa_s, MSG_ERROR,
1806                                        "P2P: Failed to copy passphrase for GO");
1807                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1808                         return;
1809                 }
1810         } else
1811                 ssid->passphrase = NULL;
1812         ssid->psk_set = params->psk_set;
1813         if (ssid->psk_set)
1814                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1815         else if (ssid->passphrase)
1816                 wpa_config_update_psk(ssid);
1817         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1818
1819         wpa_s->ap_configured_cb = p2p_go_configured;
1820         wpa_s->ap_configured_cb_ctx = wpa_s;
1821         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1822         wpa_s->scan_req = NORMAL_SCAN_REQ;
1823         wpa_s->connect_without_scan = ssid;
1824         wpa_s->reassociate = 1;
1825         wpa_s->disconnected = 0;
1826         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1827                 "start GO)");
1828         wpa_supplicant_req_scan(wpa_s, 0, 0);
1829 }
1830
1831
1832 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1833                                   const struct wpa_supplicant *src)
1834 {
1835         struct wpa_config *d;
1836         const struct wpa_config *s;
1837
1838         d = dst->conf;
1839         s = src->conf;
1840
1841 #define C(n) if (s->n) d->n = os_strdup(s->n)
1842         C(device_name);
1843         C(manufacturer);
1844         C(model_name);
1845         C(model_number);
1846         C(serial_number);
1847         C(config_methods);
1848 #undef C
1849
1850         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1851         os_memcpy(d->sec_device_type, s->sec_device_type,
1852                   sizeof(d->sec_device_type));
1853         d->num_sec_device_types = s->num_sec_device_types;
1854
1855         d->p2p_group_idle = s->p2p_group_idle;
1856         d->p2p_intra_bss = s->p2p_intra_bss;
1857         d->persistent_reconnect = s->persistent_reconnect;
1858         d->max_num_sta = s->max_num_sta;
1859         d->pbc_in_m1 = s->pbc_in_m1;
1860         d->ignore_old_scan_res = s->ignore_old_scan_res;
1861         d->beacon_int = s->beacon_int;
1862         d->dtim_period = s->dtim_period;
1863         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1864         d->disassoc_low_ack = s->disassoc_low_ack;
1865         d->disable_scan_offload = s->disable_scan_offload;
1866         d->passive_scan = s->passive_scan;
1867
1868         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1869                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1870                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1871         }
1872 }
1873
1874
1875 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1876                                       char *ifname, size_t len)
1877 {
1878         char *ifname_ptr = wpa_s->ifname;
1879
1880         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1881                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1882                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1883         }
1884
1885         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1886         if (os_strlen(ifname) >= IFNAMSIZ &&
1887             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1888                 int res;
1889
1890                 /* Try to avoid going over the IFNAMSIZ length limit */
1891                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1892                 if (os_snprintf_error(len, res) && len)
1893                         ifname[len - 1] = '\0';
1894         }
1895 }
1896
1897
1898 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1899                                         enum wpa_driver_if_type type)
1900 {
1901         char ifname[120], force_ifname[120];
1902
1903         if (wpa_s->pending_interface_name[0]) {
1904                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1905                            "- skip creation of a new one");
1906                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1907                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1908                                    "unknown?! ifname='%s'",
1909                                    wpa_s->pending_interface_name);
1910                         return -1;
1911                 }
1912                 return 0;
1913         }
1914
1915         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1916         force_ifname[0] = '\0';
1917
1918         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1919                    ifname);
1920         wpa_s->p2p_group_idx++;
1921
1922         wpa_s->pending_interface_type = type;
1923         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1924                            wpa_s->pending_interface_addr, NULL) < 0) {
1925                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1926                            "interface");
1927                 return -1;
1928         }
1929
1930         if (force_ifname[0]) {
1931                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1932                            force_ifname);
1933                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1934                            sizeof(wpa_s->pending_interface_name));
1935         } else
1936                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1937                            sizeof(wpa_s->pending_interface_name));
1938         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1939                    MACSTR, wpa_s->pending_interface_name,
1940                    MAC2STR(wpa_s->pending_interface_addr));
1941
1942         return 0;
1943 }
1944
1945
1946 static void wpas_p2p_remove_pending_group_interface(
1947         struct wpa_supplicant *wpa_s)
1948 {
1949         if (!wpa_s->pending_interface_name[0] ||
1950             is_zero_ether_addr(wpa_s->pending_interface_addr))
1951                 return; /* No pending virtual interface */
1952
1953         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1954                    wpa_s->pending_interface_name);
1955         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1956                           wpa_s->pending_interface_name);
1957         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1958         wpa_s->pending_interface_name[0] = '\0';
1959         wpa_s->global->pending_group_iface_for_p2ps = 0;
1960 }
1961
1962
1963 static struct wpa_supplicant *
1964 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1965 {
1966         struct wpa_interface iface;
1967         struct wpa_supplicant *group_wpa_s;
1968
1969         if (!wpa_s->pending_interface_name[0]) {
1970                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1971                 if (!wpas_p2p_create_iface(wpa_s))
1972                         return NULL;
1973                 /*
1974                  * Something has forced us to remove the pending interface; try
1975                  * to create a new one and hope for the best that we will get
1976                  * the same local address.
1977                  */
1978                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1979                                                  WPA_IF_P2P_CLIENT) < 0)
1980                         return NULL;
1981         }
1982
1983         os_memset(&iface, 0, sizeof(iface));
1984         iface.ifname = wpa_s->pending_interface_name;
1985         iface.driver = wpa_s->driver->name;
1986         if (wpa_s->conf->ctrl_interface == NULL &&
1987             wpa_s->parent != wpa_s &&
1988             wpa_s->p2p_mgmt &&
1989             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1990                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1991         else
1992                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1993         iface.driver_param = wpa_s->conf->driver_param;
1994         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
1995         if (group_wpa_s == NULL) {
1996                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1997                            "wpa_supplicant interface");
1998                 return NULL;
1999         }
2000         wpa_s->pending_interface_name[0] = '\0';
2001         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2002                 P2P_GROUP_INTERFACE_CLIENT;
2003         wpa_s->global->p2p_group_formation = group_wpa_s;
2004         wpa_s->global->pending_group_iface_for_p2ps = 0;
2005
2006         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2007
2008         return group_wpa_s;
2009 }
2010
2011
2012 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2013                                              void *timeout_ctx)
2014 {
2015         struct wpa_supplicant *wpa_s = eloop_ctx;
2016         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2017         wpas_p2p_group_formation_failed(wpa_s);
2018 }
2019
2020
2021 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
2022 {
2023         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2024                              wpa_s->parent, NULL);
2025         if (wpa_s->global->p2p)
2026                 p2p_group_formation_failed(wpa_s->global->p2p);
2027         wpas_group_formation_completed(wpa_s, 0);
2028 }
2029
2030
2031 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2032 {
2033         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2034         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2035                              wpa_s->parent, NULL);
2036         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2037                                wpa_s->parent, NULL);
2038         wpa_s->global->p2p_fail_on_wps_complete = 0;
2039 }
2040
2041
2042 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2043 {
2044         if (wpa_s->global->p2p_group_formation != wpa_s)
2045                 return;
2046         /* Speed up group formation timeout since this cannot succeed */
2047         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2048                              wpa_s->parent, NULL);
2049         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2050                                wpa_s->parent, NULL);
2051 }
2052
2053
2054 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2055 {
2056         struct wpa_supplicant *wpa_s = ctx;
2057
2058         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2059                 wpa_drv_cancel_remain_on_channel(wpa_s);
2060                 wpa_s->off_channel_freq = 0;
2061                 wpa_s->roc_waiting_drv_freq = 0;
2062         }
2063
2064         if (res->status) {
2065                 wpa_msg_global(wpa_s, MSG_INFO,
2066                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2067                                res->status);
2068                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2069                 wpas_p2p_remove_pending_group_interface(wpa_s);
2070                 return;
2071         }
2072
2073         if (wpa_s->p2p_go_ht40)
2074                 res->ht40 = 1;
2075         if (wpa_s->p2p_go_vht)
2076                 res->vht = 1;
2077
2078         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2079                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2080                        " wps_method=%s",
2081                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2082                        MAC2STR(res->peer_device_addr),
2083                        MAC2STR(res->peer_interface_addr),
2084                        p2p_wps_method_text(res->wps_method));
2085         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2086
2087         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2088                 struct wpa_ssid *ssid;
2089                 ssid = wpa_config_get_network(wpa_s->conf,
2090                                               wpa_s->p2p_persistent_id);
2091                 if (ssid && ssid->disabled == 2 &&
2092                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2093                         size_t len = os_strlen(ssid->passphrase);
2094                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2095                                    "on requested persistent group");
2096                         os_memcpy(res->passphrase, ssid->passphrase, len);
2097                         res->passphrase[len] = '\0';
2098                 }
2099         }
2100
2101         if (wpa_s->create_p2p_iface) {
2102                 struct wpa_supplicant *group_wpa_s =
2103                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2104                 if (group_wpa_s == NULL) {
2105                         wpas_p2p_remove_pending_group_interface(wpa_s);
2106                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2107                                              wpa_s, NULL);
2108                         wpas_p2p_group_formation_failed(wpa_s);
2109                         return;
2110                 }
2111                 if (group_wpa_s != wpa_s) {
2112                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2113                                   sizeof(group_wpa_s->p2p_pin));
2114                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2115                 }
2116                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2117                 wpa_s->pending_interface_name[0] = '\0';
2118                 group_wpa_s->p2p_in_provisioning = 1;
2119
2120                 if (res->role_go)
2121                         wpas_start_wps_go(group_wpa_s, res, 1);
2122                 else
2123                         wpas_start_wps_enrollee(group_wpa_s, res);
2124         } else {
2125                 wpa_s->p2p_in_provisioning = 1;
2126                 wpa_s->global->p2p_group_formation = wpa_s;
2127
2128                 if (res->role_go)
2129                         wpas_start_wps_go(wpa_s, res, 1);
2130                 else
2131                         wpas_start_wps_enrollee(ctx, res);
2132         }
2133
2134         wpa_s->p2p_long_listen = 0;
2135         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2136
2137         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2138         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2139                                (res->peer_config_timeout % 100) * 10000,
2140                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2141 }
2142
2143
2144 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
2145 {
2146         struct wpa_supplicant *wpa_s = ctx;
2147         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2148                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
2149
2150         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
2151 }
2152
2153
2154 static void wpas_dev_found(void *ctx, const u8 *addr,
2155                            const struct p2p_peer_info *info,
2156                            int new_device)
2157 {
2158 #ifndef CONFIG_NO_STDOUT_DEBUG
2159         struct wpa_supplicant *wpa_s = ctx;
2160         char devtype[WPS_DEV_TYPE_BUFSIZE];
2161         char *wfd_dev_info_hex = NULL;
2162
2163 #ifdef CONFIG_WIFI_DISPLAY
2164         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2165                                                     WFD_SUBELEM_DEVICE_INFO);
2166 #endif /* CONFIG_WIFI_DISPLAY */
2167
2168         if (info->p2ps_instance) {
2169                 char str[256];
2170                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2171                 size_t len = wpabuf_len(info->p2ps_instance);
2172
2173                 while (len) {
2174                         u32 id;
2175                         u16 methods;
2176                         u8 str_len;
2177
2178                         if (len < 4 + 2 + 1)
2179                                 break;
2180                         id = WPA_GET_LE32(buf);
2181                         buf += sizeof(u32);
2182                         methods = WPA_GET_BE16(buf);
2183                         buf += sizeof(u16);
2184                         str_len = *buf++;
2185                         if (str_len > len - 4 - 2 - 1)
2186                                 break;
2187                         os_memcpy(str, buf, str_len);
2188                         str[str_len] = '\0';
2189                         buf += str_len;
2190                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2191
2192                         wpa_msg_global(wpa_s, MSG_INFO,
2193                                        P2P_EVENT_DEVICE_FOUND MACSTR
2194                                        " p2p_dev_addr=" MACSTR
2195                                        " pri_dev_type=%s name='%s'"
2196                                        " config_methods=0x%x"
2197                                        " dev_capab=0x%x"
2198                                        " group_capab=0x%x"
2199                                        " adv_id=%x asp_svc=%s%s",
2200                                        MAC2STR(addr),
2201                                        MAC2STR(info->p2p_device_addr),
2202                                        wps_dev_type_bin2str(
2203                                                info->pri_dev_type,
2204                                                devtype, sizeof(devtype)),
2205                                        info->device_name, methods,
2206                                        info->dev_capab, info->group_capab,
2207                                        id, str,
2208                                        info->vendor_elems ?
2209                                        " vendor_elems=1" : "");
2210                 }
2211                 goto done;
2212         }
2213
2214         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2215                        " p2p_dev_addr=" MACSTR
2216                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2217                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2218                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2219                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2220                                             sizeof(devtype)),
2221                        info->device_name, info->config_methods,
2222                        info->dev_capab, info->group_capab,
2223                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2224                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2225                        info->vendor_elems ? " vendor_elems=1" : "",
2226                        new_device);
2227
2228 done:
2229         os_free(wfd_dev_info_hex);
2230 #endif /* CONFIG_NO_STDOUT_DEBUG */
2231
2232         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2233 }
2234
2235
2236 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2237 {
2238         struct wpa_supplicant *wpa_s = ctx;
2239
2240         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2241                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2242
2243         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2244 }
2245
2246
2247 static void wpas_find_stopped(void *ctx)
2248 {
2249         struct wpa_supplicant *wpa_s = ctx;
2250         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2251 }
2252
2253
2254 struct wpas_p2p_listen_work {
2255         unsigned int freq;
2256         unsigned int duration;
2257         struct wpabuf *probe_resp_ie;
2258 };
2259
2260
2261 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2262 {
2263         if (lwork == NULL)
2264                 return;
2265         wpabuf_free(lwork->probe_resp_ie);
2266         os_free(lwork);
2267 }
2268
2269
2270 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2271 {
2272         struct wpas_p2p_listen_work *lwork;
2273
2274         if (!wpa_s->p2p_listen_work)
2275                 return;
2276
2277         lwork = wpa_s->p2p_listen_work->ctx;
2278         wpas_p2p_listen_work_free(lwork);
2279         radio_work_done(wpa_s->p2p_listen_work);
2280         wpa_s->p2p_listen_work = NULL;
2281 }
2282
2283
2284 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2285 {
2286         struct wpa_supplicant *wpa_s = work->wpa_s;
2287         struct wpas_p2p_listen_work *lwork = work->ctx;
2288         unsigned int duration;
2289
2290         if (deinit) {
2291                 if (work->started) {
2292                         wpa_s->p2p_listen_work = NULL;
2293                         wpas_stop_listen(wpa_s);
2294                 }
2295                 wpas_p2p_listen_work_free(lwork);
2296                 return;
2297         }
2298
2299         wpa_s->p2p_listen_work = work;
2300
2301         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2302
2303         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2304                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2305                            "report received Probe Request frames");
2306                 wpas_p2p_listen_work_done(wpa_s);
2307                 return;
2308         }
2309
2310         wpa_s->pending_listen_freq = lwork->freq;
2311         wpa_s->pending_listen_duration = lwork->duration;
2312
2313         duration = lwork->duration;
2314 #ifdef CONFIG_TESTING_OPTIONS
2315         if (wpa_s->extra_roc_dur) {
2316                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2317                            duration, duration + wpa_s->extra_roc_dur);
2318                 duration += wpa_s->extra_roc_dur;
2319         }
2320 #endif /* CONFIG_TESTING_OPTIONS */
2321
2322         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2323                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2324                            "to remain on channel (%u MHz) for Listen "
2325                            "state", lwork->freq);
2326                 wpas_p2p_listen_work_done(wpa_s);
2327                 wpa_s->pending_listen_freq = 0;
2328                 return;
2329         }
2330         wpa_s->off_channel_freq = 0;
2331         wpa_s->roc_waiting_drv_freq = lwork->freq;
2332 }
2333
2334
2335 static int wpas_start_listen(void *ctx, unsigned int freq,
2336                              unsigned int duration,
2337                              const struct wpabuf *probe_resp_ie)
2338 {
2339         struct wpa_supplicant *wpa_s = ctx;
2340         struct wpas_p2p_listen_work *lwork;
2341
2342         if (wpa_s->p2p_listen_work) {
2343                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2344                 return -1;
2345         }
2346
2347         lwork = os_zalloc(sizeof(*lwork));
2348         if (lwork == NULL)
2349                 return -1;
2350         lwork->freq = freq;
2351         lwork->duration = duration;
2352         if (probe_resp_ie) {
2353                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2354                 if (lwork->probe_resp_ie == NULL) {
2355                         wpas_p2p_listen_work_free(lwork);
2356                         return -1;
2357                 }
2358         }
2359
2360         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2361                            lwork) < 0) {
2362                 wpas_p2p_listen_work_free(lwork);
2363                 return -1;
2364         }
2365
2366         return 0;
2367 }
2368
2369
2370 static void wpas_stop_listen(void *ctx)
2371 {
2372         struct wpa_supplicant *wpa_s = ctx;
2373         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2374                 wpa_drv_cancel_remain_on_channel(wpa_s);
2375                 wpa_s->off_channel_freq = 0;
2376                 wpa_s->roc_waiting_drv_freq = 0;
2377         }
2378         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2379         wpa_drv_probe_req_report(wpa_s, 0);
2380         wpas_p2p_listen_work_done(wpa_s);
2381 }
2382
2383
2384 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
2385 {
2386         struct wpa_supplicant *wpa_s = ctx;
2387         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
2388 }
2389
2390
2391 /*
2392  * DNS Header section is used only to calculate compression pointers, so the
2393  * contents of this data does not matter, but the length needs to be reserved
2394  * in the virtual packet.
2395  */
2396 #define DNS_HEADER_LEN 12
2397
2398 /*
2399  * 27-octet in-memory packet from P2P specification containing two implied
2400  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
2401  */
2402 #define P2P_SD_IN_MEMORY_LEN 27
2403
2404 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
2405                                        u8 **spos, const u8 *end)
2406 {
2407         while (*spos < end) {
2408                 u8 val = ((*spos)[0] & 0xc0) >> 6;
2409                 int len;
2410
2411                 if (val == 1 || val == 2) {
2412                         /* These are reserved values in RFC 1035 */
2413                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
2414                                    "sequence starting with 0x%x", val);
2415                         return -1;
2416                 }
2417
2418                 if (val == 3) {
2419                         u16 offset;
2420                         u8 *spos_tmp;
2421
2422                         /* Offset */
2423                         if (*spos + 2 > end) {
2424                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
2425                                            "DNS offset field");
2426                                 return -1;
2427                         }
2428
2429                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
2430                         if (offset >= *spos - start) {
2431                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
2432                                            "pointer offset %u", offset);
2433                                 return -1;
2434                         }
2435
2436                         (*spos) += 2;
2437                         spos_tmp = start + offset;
2438                         return p2p_sd_dns_uncompress_label(upos, uend, start,
2439                                                            &spos_tmp,
2440                                                            *spos - 2);
2441                 }
2442
2443                 /* Label */
2444                 len = (*spos)[0] & 0x3f;
2445                 if (len == 0)
2446                         return 0;
2447
2448                 (*spos)++;
2449                 if (*spos + len > end) {
2450                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
2451                                    "sequence - no room for label with length "
2452                                    "%u", len);
2453                         return -1;
2454                 }
2455
2456                 if (*upos + len + 2 > uend)
2457                         return -2;
2458
2459                 os_memcpy(*upos, *spos, len);
2460                 *spos += len;
2461                 *upos += len;
2462                 (*upos)[0] = '.';
2463                 (*upos)++;
2464                 (*upos)[0] = '\0';
2465         }
2466
2467         return 0;
2468 }
2469
2470
2471 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
2472  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
2473  * not large enough */
2474 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
2475                                  size_t msg_len, size_t offset)
2476 {
2477         /* 27-octet in-memory packet from P2P specification */
2478         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
2479                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
2480         u8 *tmp, *end, *spos;
2481         char *upos, *uend;
2482         int ret = 0;
2483
2484         if (buf_len < 2)
2485                 return -1;
2486         if (offset > msg_len)
2487                 return -1;
2488
2489         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
2490         if (tmp == NULL)
2491                 return -1;
2492         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
2493         end = spos + msg_len;
2494         spos += offset;
2495
2496         os_memset(tmp, 0, DNS_HEADER_LEN);
2497         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
2498         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
2499
2500         upos = buf;
2501         uend = buf + buf_len;
2502
2503         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
2504         if (ret) {
2505                 os_free(tmp);
2506                 return ret;
2507         }
2508
2509         if (upos == buf) {
2510                 upos[0] = '.';
2511                 upos[1] = '\0';
2512         } else if (upos[-1] == '.')
2513                 upos[-1] = '\0';
2514
2515         os_free(tmp);
2516         return 0;
2517 }
2518
2519
2520 static struct p2p_srv_bonjour *
2521 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
2522                              const struct wpabuf *query)
2523 {
2524         struct p2p_srv_bonjour *bsrv;
2525         size_t len;
2526
2527         len = wpabuf_len(query);
2528         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2529                          struct p2p_srv_bonjour, list) {
2530                 if (len == wpabuf_len(bsrv->query) &&
2531                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
2532                               len) == 0)
2533                         return bsrv;
2534         }
2535         return NULL;
2536 }
2537
2538
2539 static struct p2p_srv_upnp *
2540 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2541                           const char *service)
2542 {
2543         struct p2p_srv_upnp *usrv;
2544
2545         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2546                          struct p2p_srv_upnp, list) {
2547                 if (version == usrv->version &&
2548                     os_strcmp(service, usrv->service) == 0)
2549                         return usrv;
2550         }
2551         return NULL;
2552 }
2553
2554
2555 static void wpas_sd_add_empty(struct wpabuf *resp, u8 srv_proto,
2556                               u8 srv_trans_id, u8 status)
2557 {
2558         u8 *len_pos;
2559
2560         if (wpabuf_tailroom(resp) < 5)
2561                 return;
2562
2563         /* Length (to be filled) */
2564         len_pos = wpabuf_put(resp, 2);
2565         wpabuf_put_u8(resp, srv_proto);
2566         wpabuf_put_u8(resp, srv_trans_id);
2567         /* Status Code */
2568         wpabuf_put_u8(resp, status);
2569         /* Response Data: empty */
2570         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2571 }
2572
2573
2574 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2575                                         u8 srv_trans_id)
2576 {
2577         wpas_sd_add_empty(resp, srv_proto, srv_trans_id,
2578                           P2P_SD_PROTO_NOT_AVAILABLE);
2579 }
2580
2581
2582 static void wpas_sd_add_bad_request(struct wpabuf *resp, u8 srv_proto,
2583                                     u8 srv_trans_id)
2584 {
2585         wpas_sd_add_empty(resp, srv_proto, srv_trans_id, P2P_SD_BAD_REQUEST);
2586 }
2587
2588
2589 static void wpas_sd_add_not_found(struct wpabuf *resp, u8 srv_proto,
2590                                   u8 srv_trans_id)
2591 {
2592         wpas_sd_add_empty(resp, srv_proto, srv_trans_id,
2593                           P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2594 }
2595
2596
2597 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2598                                 struct wpabuf *resp, u8 srv_trans_id)
2599 {
2600         struct p2p_srv_bonjour *bsrv;
2601         u8 *len_pos;
2602
2603         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2604
2605         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2606                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2607                 return;
2608         }
2609
2610         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2611                          struct p2p_srv_bonjour, list) {
2612                 if (wpabuf_tailroom(resp) <
2613                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2614                         return;
2615                 /* Length (to be filled) */
2616                 len_pos = wpabuf_put(resp, 2);
2617                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2618                 wpabuf_put_u8(resp, srv_trans_id);
2619                 /* Status Code */
2620                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2621                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2622                                   wpabuf_head(bsrv->resp),
2623                                   wpabuf_len(bsrv->resp));
2624                 /* Response Data */
2625                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2626                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2627                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2628                              2);
2629         }
2630 }
2631
2632
2633 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2634                                size_t query_len)
2635 {
2636         char str_rx[256], str_srv[256];
2637
2638         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2639                 return 0; /* Too short to include DNS Type and Version */
2640         if (os_memcmp(query + query_len - 3,
2641                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2642                       3) != 0)
2643                 return 0; /* Mismatch in DNS Type or Version */
2644         if (query_len == wpabuf_len(bsrv->query) &&
2645             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2646                 return 1; /* Binary match */
2647
2648         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2649                                   0))
2650                 return 0; /* Failed to uncompress query */
2651         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2652                                   wpabuf_head(bsrv->query),
2653                                   wpabuf_len(bsrv->query) - 3, 0))
2654                 return 0; /* Failed to uncompress service */
2655
2656         return os_strcmp(str_rx, str_srv) == 0;
2657 }
2658
2659
2660 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2661                                 struct wpabuf *resp, u8 srv_trans_id,
2662                                 const u8 *query, size_t query_len)
2663 {
2664         struct p2p_srv_bonjour *bsrv;
2665         u8 *len_pos;
2666         int matches = 0;
2667
2668         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2669                           query, query_len);
2670         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2671                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2672                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2673                                             srv_trans_id);
2674                 return;
2675         }
2676
2677         if (query_len == 0) {
2678                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2679                 return;
2680         }
2681
2682         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2683                          struct p2p_srv_bonjour, list) {
2684                 if (!match_bonjour_query(bsrv, query, query_len))
2685                         continue;
2686
2687                 if (wpabuf_tailroom(resp) <
2688                     5 + query_len + wpabuf_len(bsrv->resp))
2689                         return;
2690
2691                 matches++;
2692
2693                 /* Length (to be filled) */
2694                 len_pos = wpabuf_put(resp, 2);
2695                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2696                 wpabuf_put_u8(resp, srv_trans_id);
2697
2698                 /* Status Code */
2699                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2700                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2701                                   wpabuf_head(bsrv->resp),
2702                                   wpabuf_len(bsrv->resp));
2703
2704                 /* Response Data */
2705                 wpabuf_put_data(resp, query, query_len); /* Key */
2706                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2707
2708                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2709         }
2710
2711         if (matches == 0) {
2712                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2713                            "available");
2714                 if (wpabuf_tailroom(resp) < 5)
2715                         return;
2716
2717                 /* Length (to be filled) */
2718                 len_pos = wpabuf_put(resp, 2);
2719                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2720                 wpabuf_put_u8(resp, srv_trans_id);
2721
2722                 /* Status Code */
2723                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2724                 /* Response Data: empty */
2725                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2726                              2);
2727         }
2728 }
2729
2730
2731 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2732                              struct wpabuf *resp, u8 srv_trans_id)
2733 {
2734         struct p2p_srv_upnp *usrv;
2735         u8 *len_pos;
2736
2737         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2738
2739         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2740                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2741                 return;
2742         }
2743
2744         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2745                          struct p2p_srv_upnp, list) {
2746                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2747                         return;
2748
2749                 /* Length (to be filled) */
2750                 len_pos = wpabuf_put(resp, 2);
2751                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2752                 wpabuf_put_u8(resp, srv_trans_id);
2753
2754                 /* Status Code */
2755                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2756                 /* Response Data */
2757                 wpabuf_put_u8(resp, usrv->version);
2758                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2759                            usrv->service);
2760                 wpabuf_put_str(resp, usrv->service);
2761                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2762                              2);
2763         }
2764 }
2765
2766
2767 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2768                              struct wpabuf *resp, u8 srv_trans_id,
2769                              const u8 *query, size_t query_len)
2770 {
2771         struct p2p_srv_upnp *usrv;
2772         u8 *len_pos;
2773         u8 version;
2774         char *str;
2775         int count = 0;
2776
2777         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2778                           query, query_len);
2779
2780         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2781                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2782                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2783                                             srv_trans_id);
2784                 return;
2785         }
2786
2787         if (query_len == 0) {
2788                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2789                 return;
2790         }
2791
2792         if (wpabuf_tailroom(resp) < 5)
2793                 return;
2794
2795         /* Length (to be filled) */
2796         len_pos = wpabuf_put(resp, 2);
2797         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2798         wpabuf_put_u8(resp, srv_trans_id);
2799
2800         version = query[0];
2801         str = os_malloc(query_len);
2802         if (str == NULL)
2803                 return;
2804         os_memcpy(str, query + 1, query_len - 1);
2805         str[query_len - 1] = '\0';
2806
2807         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2808                          struct p2p_srv_upnp, list) {
2809                 if (version != usrv->version)
2810                         continue;
2811
2812                 if (os_strcmp(str, "ssdp:all") != 0 &&
2813                     os_strstr(usrv->service, str) == NULL)
2814                         continue;
2815
2816                 if (wpabuf_tailroom(resp) < 2)
2817                         break;
2818                 if (count == 0) {
2819                         /* Status Code */
2820                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2821                         /* Response Data */
2822                         wpabuf_put_u8(resp, version);
2823                 } else
2824                         wpabuf_put_u8(resp, ',');
2825
2826                 count++;
2827
2828                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2829                            usrv->service);
2830                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2831                         break;
2832                 wpabuf_put_str(resp, usrv->service);
2833         }
2834         os_free(str);
2835
2836         if (count == 0) {
2837                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2838                            "available");
2839                 /* Status Code */
2840                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2841                 /* Response Data: empty */
2842         }
2843
2844         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2845 }
2846
2847
2848 #ifdef CONFIG_WIFI_DISPLAY
2849 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2850                             struct wpabuf *resp, u8 srv_trans_id,
2851                             const u8 *query, size_t query_len)
2852 {
2853         const u8 *pos;
2854         u8 role;
2855         u8 *len_pos;
2856
2857         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2858
2859         if (!wpa_s->global->wifi_display) {
2860                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2861                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2862                                             srv_trans_id);
2863                 return;
2864         }
2865
2866         if (query_len < 1) {
2867                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2868                            "Role");
2869                 return;
2870         }
2871
2872         if (wpabuf_tailroom(resp) < 5)
2873                 return;
2874
2875         pos = query;
2876         role = *pos++;
2877         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2878
2879         /* TODO: role specific handling */
2880
2881         /* Length (to be filled) */
2882         len_pos = wpabuf_put(resp, 2);
2883         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2884         wpabuf_put_u8(resp, srv_trans_id);
2885         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2886
2887         while (pos < query + query_len) {
2888                 if (*pos < MAX_WFD_SUBELEMS &&
2889                     wpa_s->global->wfd_subelem[*pos] &&
2890                     wpabuf_tailroom(resp) >=
2891                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2892                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2893                                    "subelement %u", *pos);
2894                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2895                 }
2896                 pos++;
2897         }
2898
2899         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2900 }
2901 #endif /* CONFIG_WIFI_DISPLAY */
2902
2903
2904 static int find_p2ps_substr(struct p2ps_advertisement *adv_data,
2905                             const u8 *needle, size_t needle_len)
2906 {
2907         const u8 *haystack = (const u8 *) adv_data->svc_info;
2908         size_t haystack_len, i;
2909
2910         /* Allow search term to be empty */
2911         if (!needle || !needle_len)
2912                 return 1;
2913
2914         if (!haystack)
2915                 return 0;
2916
2917         haystack_len = os_strlen(adv_data->svc_info);
2918         for (i = 0; i < haystack_len; i++) {
2919                 if (haystack_len - i < needle_len)
2920                         break;
2921                 if (os_memcmp(haystack + i, needle, needle_len) == 0)
2922                         return 1;
2923         }
2924
2925         return 0;
2926 }
2927
2928
2929 static void wpas_sd_req_asp(struct wpa_supplicant *wpa_s,
2930                             struct wpabuf *resp, u8 srv_trans_id,
2931                             const u8 *query, size_t query_len)
2932 {
2933         struct p2ps_advertisement *adv_data;
2934         const u8 *svc = &query[1];
2935         const u8 *info = NULL;
2936         size_t svc_len = query[0];
2937         size_t info_len = 0;
2938         int prefix = 0;
2939         u8 *count_pos = NULL;
2940         u8 *len_pos = NULL;
2941
2942         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for ASP", query, query_len);
2943
2944         if (!wpa_s->global->p2p) {
2945                 wpa_printf(MSG_DEBUG, "P2P: ASP protocol not available");
2946                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_P2PS, srv_trans_id);
2947                 return;
2948         }
2949
2950         /* Info block is optional */
2951         if (svc_len + 1 < query_len) {
2952                 info = &svc[svc_len];
2953                 info_len = *info++;
2954         }
2955
2956         /* Range check length of svc string and info block */
2957         if (svc_len + (info_len ? info_len + 2 : 1) > query_len) {
2958                 wpa_printf(MSG_DEBUG, "P2P: ASP bad request");
2959                 wpas_sd_add_bad_request(resp, P2P_SERV_P2PS, srv_trans_id);
2960                 return;
2961         }
2962
2963         /* Detect and correct for prefix search */
2964         if (svc_len && svc[svc_len - 1] == '*') {
2965                 prefix = 1;
2966                 svc_len--;
2967         }
2968
2969         for (adv_data = p2p_get_p2ps_adv_list(wpa_s->global->p2p);
2970              adv_data; adv_data = adv_data->next) {
2971                 /* If not a prefix match, reject length mismatches */
2972                 if (!prefix && svc_len != os_strlen(adv_data->svc_name))
2973                         continue;
2974
2975                 /* Search each service for request */
2976                 if (os_memcmp(adv_data->svc_name, svc, svc_len) == 0 &&
2977                     find_p2ps_substr(adv_data, info, info_len)) {
2978                         size_t len = os_strlen(adv_data->svc_name);
2979                         size_t svc_info_len = 0;
2980
2981                         if (adv_data->svc_info)
2982                                 svc_info_len = os_strlen(adv_data->svc_info);
2983
2984                         if (len > 0xff || svc_info_len > 0xffff)
2985                                 return;
2986
2987                         /* Length & Count to be filled as we go */
2988                         if (!len_pos && !count_pos) {
2989                                 if (wpabuf_tailroom(resp) <
2990                                     len + svc_info_len + 16)
2991                                         return;
2992
2993                                 len_pos = wpabuf_put(resp, 2);
2994                                 wpabuf_put_u8(resp, P2P_SERV_P2PS);
2995                                 wpabuf_put_u8(resp, srv_trans_id);
2996                                 /* Status Code */
2997                                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2998                                 count_pos = wpabuf_put(resp, 1);
2999                                 *count_pos = 0;
3000                         } else if (wpabuf_tailroom(resp) <
3001                                    len + svc_info_len + 10)
3002                                 return;
3003
3004                         if (svc_info_len) {
3005                                 wpa_printf(MSG_DEBUG,
3006                                            "P2P: Add Svc: %s info: %s",
3007                                            adv_data->svc_name,
3008                                            adv_data->svc_info);
3009                         } else {
3010                                 wpa_printf(MSG_DEBUG, "P2P: Add Svc: %s",
3011                                            adv_data->svc_name);
3012                         }
3013
3014                         /* Advertisement ID */
3015                         wpabuf_put_le32(resp, adv_data->id);
3016
3017                         /* Config Methods */
3018                         wpabuf_put_be16(resp, adv_data->config_methods);
3019
3020                         /* Service Name */
3021                         wpabuf_put_u8(resp, (u8) len);
3022                         wpabuf_put_data(resp, adv_data->svc_name, len);
3023
3024                         /* Service State */
3025                         wpabuf_put_u8(resp, adv_data->state);
3026
3027                         /* Service Information */
3028                         wpabuf_put_le16(resp, (u16) svc_info_len);
3029                         wpabuf_put_data(resp, adv_data->svc_info, svc_info_len);
3030
3031                         /* Update length and count */
3032                         (*count_pos)++;
3033                         WPA_PUT_LE16(len_pos,
3034                                      (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
3035                 }
3036         }
3037
3038         /* Return error if no matching svc found */
3039         if (count_pos == NULL) {
3040                 wpa_printf(MSG_DEBUG, "P2P: ASP service not found");
3041                 wpas_sd_add_not_found(resp, P2P_SERV_P2PS, srv_trans_id);
3042         }
3043 }
3044
3045
3046 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
3047                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
3048 {
3049         struct wpa_supplicant *wpa_s = ctx;
3050         const u8 *pos = tlvs;
3051         const u8 *end = tlvs + tlvs_len;
3052         const u8 *tlv_end;
3053         u16 slen;
3054         struct wpabuf *resp;
3055         u8 srv_proto, srv_trans_id;
3056         size_t buf_len;
3057         char *buf;
3058
3059         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
3060                     tlvs, tlvs_len);
3061         buf_len = 2 * tlvs_len + 1;
3062         buf = os_malloc(buf_len);
3063         if (buf) {
3064                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
3065                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
3066                              MACSTR " %u %u %s",
3067                              freq, MAC2STR(sa), dialog_token, update_indic,
3068                              buf);
3069                 os_free(buf);
3070         }
3071
3072         if (wpa_s->p2p_sd_over_ctrl_iface) {
3073                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
3074                                            update_indic, tlvs, tlvs_len);
3075                 return; /* to be processed by an external program */
3076         }
3077
3078         resp = wpabuf_alloc(10000);
3079         if (resp == NULL)
3080                 return;
3081
3082         while (pos + 1 < end) {
3083                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
3084                 slen = WPA_GET_LE16(pos);
3085                 pos += 2;
3086                 if (pos + slen > end || slen < 2) {
3087                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
3088                                    "length");
3089                         wpabuf_free(resp);
3090                         return;
3091                 }
3092                 tlv_end = pos + slen;
3093
3094                 srv_proto = *pos++;
3095                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
3096                            srv_proto);
3097                 srv_trans_id = *pos++;
3098                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
3099                            srv_trans_id);
3100
3101                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
3102                             pos, tlv_end - pos);
3103
3104
3105                 if (wpa_s->force_long_sd) {
3106                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
3107                                    "response");
3108                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
3109                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
3110                         goto done;
3111                 }
3112
3113                 switch (srv_proto) {
3114                 case P2P_SERV_ALL_SERVICES:
3115                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
3116                                    "for all services");
3117                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
3118                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
3119                                 wpa_printf(MSG_DEBUG, "P2P: No service "
3120                                            "discovery protocols available");
3121                                 wpas_sd_add_proto_not_avail(
3122                                         resp, P2P_SERV_ALL_SERVICES,
3123                                         srv_trans_id);
3124                                 break;
3125                         }
3126                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
3127                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
3128                         break;
3129                 case P2P_SERV_BONJOUR:
3130                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
3131                                             pos, tlv_end - pos);
3132                         break;
3133                 case P2P_SERV_UPNP:
3134                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
3135                                          pos, tlv_end - pos);
3136                         break;
3137 #ifdef CONFIG_WIFI_DISPLAY
3138                 case P2P_SERV_WIFI_DISPLAY:
3139                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
3140                                         pos, tlv_end - pos);
3141                         break;
3142 #endif /* CONFIG_WIFI_DISPLAY */
3143                 case P2P_SERV_P2PS:
3144                         wpas_sd_req_asp(wpa_s, resp, srv_trans_id,
3145                                         pos, tlv_end - pos);
3146                         break;
3147                 default:
3148                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
3149                                    "protocol %u", srv_proto);
3150                         wpas_sd_add_proto_not_avail(resp, srv_proto,
3151                                                     srv_trans_id);
3152                         break;
3153                 }
3154
3155                 pos = tlv_end;
3156         }
3157
3158 done:
3159         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
3160                                    update_indic, tlvs, tlvs_len);
3161
3162         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
3163
3164         wpabuf_free(resp);
3165 }
3166
3167
3168 static void wpas_sd_p2ps_serv_response(struct wpa_supplicant *wpa_s,
3169                                        const u8 *sa, u8 srv_trans_id,
3170                                        const u8 *pos, const u8 *tlv_end)
3171 {
3172         u8 left = *pos++;
3173         u32 adv_id;
3174         u8 svc_status;
3175         u16 config_methods;
3176         char svc_str[256];
3177
3178         while (left-- && pos < tlv_end) {
3179                 char *buf = NULL;
3180                 size_t buf_len;
3181                 u8 svc_len;
3182
3183                 /* Sanity check fixed length+svc_str */
3184                 if (pos + 6 >= tlv_end)
3185                         break;
3186                 svc_len = pos[6];
3187                 if (pos + svc_len + 10 > tlv_end)
3188                         break;
3189
3190                 /* Advertisement ID */
3191                 adv_id = WPA_GET_LE32(pos);
3192                 pos += sizeof(u32);
3193
3194                 /* Config Methods */
3195                 config_methods = WPA_GET_BE16(pos);
3196                 pos += sizeof(u16);
3197
3198                 /* Service Name */
3199                 pos++; /* svc_len */
3200                 os_memcpy(svc_str, pos, svc_len);
3201                 svc_str[svc_len] = '\0';
3202                 pos += svc_len;
3203
3204                 /* Service Status */
3205                 svc_status = *pos++;
3206
3207                 /* Service Information Length */
3208                 buf_len = WPA_GET_LE16(pos);
3209                 pos += sizeof(u16);
3210
3211                 /* Sanity check buffer length */
3212                 if (buf_len > (unsigned int) (tlv_end - pos))
3213                         break;
3214
3215                 if (buf_len) {
3216                         buf = os_zalloc(2 * buf_len + 1);
3217                         if (buf) {
3218                                 utf8_escape((const char *) pos, buf_len, buf,
3219                                             2 * buf_len + 1);
3220                         }
3221                 }
3222
3223                 pos += buf_len;
3224
3225                 if (buf) {
3226                         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_SERV_ASP_RESP
3227                                        MACSTR " %x %x %x %x %s '%s'",
3228                                        MAC2STR(sa), srv_trans_id, adv_id,
3229                                        svc_status, config_methods, svc_str,
3230                                        buf);
3231                         os_free(buf);
3232                 } else {
3233                         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_SERV_ASP_RESP
3234                                        MACSTR " %x %x %x %x %s",
3235                                        MAC2STR(sa), srv_trans_id, adv_id,
3236                                        svc_status, config_methods, svc_str);
3237                 }
3238         }
3239 }
3240
3241
3242 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
3243                              const u8 *tlvs, size_t tlvs_len)
3244 {
3245         struct wpa_supplicant *wpa_s = ctx;
3246         const u8 *pos = tlvs;
3247         const u8 *end = tlvs + tlvs_len;
3248         const u8 *tlv_end;
3249         u16 slen;
3250         size_t buf_len;
3251         char *buf;
3252
3253         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
3254                     tlvs, tlvs_len);
3255         if (tlvs_len > 1500) {
3256                 /* TODO: better way for handling this */
3257                 wpa_msg_ctrl(wpa_s, MSG_INFO,
3258                              P2P_EVENT_SERV_DISC_RESP MACSTR
3259                              " %u <long response: %u bytes>",
3260                              MAC2STR(sa), update_indic,
3261                              (unsigned int) tlvs_len);
3262         } else {
3263                 buf_len = 2 * tlvs_len + 1;
3264                 buf = os_malloc(buf_len);
3265                 if (buf) {
3266                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
3267                         wpa_msg_ctrl(wpa_s, MSG_INFO,
3268                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
3269                                      MAC2STR(sa), update_indic, buf);
3270                         os_free(buf);
3271                 }
3272         }
3273
3274         while (pos < end) {
3275                 u8 srv_proto, srv_trans_id, status;
3276
3277                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
3278                 slen = WPA_GET_LE16(pos);
3279                 pos += 2;
3280                 if (pos + slen > end || slen < 3) {
3281                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
3282                                    "length");
3283                         return;
3284                 }
3285                 tlv_end = pos + slen;
3286
3287                 srv_proto = *pos++;
3288                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
3289                            srv_proto);
3290                 srv_trans_id = *pos++;
3291                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
3292                            srv_trans_id);
3293                 status = *pos++;
3294                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
3295                            status);
3296
3297                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
3298                             pos, tlv_end - pos);
3299
3300                 if (srv_proto == P2P_SERV_P2PS && pos < tlv_end) {
3301                         wpas_sd_p2ps_serv_response(wpa_s, sa, srv_trans_id,
3302                                                    pos, tlv_end);
3303                 }
3304
3305                 pos = tlv_end;
3306         }
3307
3308         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
3309 }
3310
3311
3312 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
3313                         const struct wpabuf *tlvs)
3314 {
3315         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3316                 return 0;
3317         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
3318 }
3319
3320
3321 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
3322                              u8 version, const char *query)
3323 {
3324         struct wpabuf *tlvs;
3325         u64 ret;
3326
3327         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
3328         if (tlvs == NULL)
3329                 return 0;
3330         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
3331         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
3332         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
3333         wpabuf_put_u8(tlvs, version);
3334         wpabuf_put_str(tlvs, query);
3335         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
3336         wpabuf_free(tlvs);
3337         return ret;
3338 }
3339
3340
3341 u64 wpas_p2p_sd_request_asp(struct wpa_supplicant *wpa_s, const u8 *dst, u8 id,
3342                             const char *svc_str, const char *info_substr)
3343 {
3344         struct wpabuf *tlvs;
3345         size_t plen, svc_len, substr_len = 0;
3346         u64 ret;
3347
3348         svc_len = os_strlen(svc_str);
3349         if (info_substr)
3350                 substr_len = os_strlen(info_substr);
3351
3352         if (svc_len > 0xff || substr_len > 0xff)
3353                 return 0;
3354
3355         plen = 1 + 1 + 1 + svc_len + 1 + substr_len;
3356         tlvs = wpabuf_alloc(2 + plen);
3357         if (tlvs == NULL)
3358                 return 0;
3359
3360         wpabuf_put_le16(tlvs, plen);
3361         wpabuf_put_u8(tlvs, P2P_SERV_P2PS);
3362         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
3363         wpabuf_put_u8(tlvs, (u8) svc_len); /* Service String Length */
3364         wpabuf_put_data(tlvs, svc_str, svc_len);
3365         wpabuf_put_u8(tlvs, (u8) substr_len); /* Info Substring Length */
3366         wpabuf_put_data(tlvs, info_substr, substr_len);
3367         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
3368         wpabuf_free(tlvs);
3369
3370         return ret;
3371 }
3372
3373
3374 #ifdef CONFIG_WIFI_DISPLAY
3375
3376 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
3377                                    const struct wpabuf *tlvs)
3378 {
3379         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3380                 return 0;
3381         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
3382 }
3383
3384
3385 #define MAX_WFD_SD_SUBELEMS 20
3386
3387 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
3388                                 const char *subelems)
3389 {
3390         u8 *len;
3391         const char *pos;
3392         int val;
3393         int count = 0;
3394
3395         len = wpabuf_put(tlvs, 2);
3396         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
3397         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
3398
3399         wpabuf_put_u8(tlvs, role);
3400
3401         pos = subelems;
3402         while (*pos) {
3403                 val = atoi(pos);
3404                 if (val >= 0 && val < 256) {
3405                         wpabuf_put_u8(tlvs, val);
3406                         count++;
3407                         if (count == MAX_WFD_SD_SUBELEMS)
3408                                 break;
3409                 }
3410                 pos = os_strchr(pos + 1, ',');
3411                 if (pos == NULL)
3412                         break;
3413                 pos++;
3414         }
3415
3416         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
3417 }
3418
3419
3420 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
3421                                      const u8 *dst, const char *role)
3422 {
3423         struct wpabuf *tlvs;
3424         u64 ret;
3425         const char *subelems;
3426         u8 id = 1;
3427
3428         subelems = os_strchr(role, ' ');
3429         if (subelems == NULL)
3430                 return 0;
3431         subelems++;
3432
3433         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
3434         if (tlvs == NULL)
3435                 return 0;
3436
3437         if (os_strstr(role, "[source]"))
3438                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
3439         if (os_strstr(role, "[pri-sink]"))
3440                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
3441         if (os_strstr(role, "[sec-sink]"))
3442                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
3443         if (os_strstr(role, "[source+sink]"))
3444                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
3445
3446         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
3447         wpabuf_free(tlvs);
3448         return ret;
3449 }
3450
3451 #endif /* CONFIG_WIFI_DISPLAY */
3452
3453
3454 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
3455 {
3456         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3457                 return -1;
3458         return p2p_sd_cancel_request(wpa_s->global->p2p,
3459                                      (void *) (uintptr_t) req);
3460 }
3461
3462
3463 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
3464                           const u8 *dst, u8 dialog_token,
3465                           const struct wpabuf *resp_tlvs)
3466 {
3467         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3468                 return;
3469         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
3470                         resp_tlvs);
3471 }
3472
3473
3474 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
3475 {
3476         if (wpa_s->global->p2p)
3477                 p2p_sd_service_update(wpa_s->global->p2p);
3478 }
3479
3480
3481 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
3482 {
3483         dl_list_del(&bsrv->list);
3484         wpabuf_free(bsrv->query);
3485         wpabuf_free(bsrv->resp);
3486         os_free(bsrv);
3487 }
3488
3489
3490 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
3491 {
3492         dl_list_del(&usrv->list);
3493         os_free(usrv->service);
3494         os_free(usrv);
3495 }
3496
3497
3498 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
3499 {
3500         struct p2p_srv_bonjour *bsrv, *bn;
3501         struct p2p_srv_upnp *usrv, *un;
3502
3503         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
3504                               struct p2p_srv_bonjour, list)
3505                 wpas_p2p_srv_bonjour_free(bsrv);
3506
3507         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
3508                               struct p2p_srv_upnp, list)
3509                 wpas_p2p_srv_upnp_free(usrv);
3510
3511         wpas_p2p_sd_service_update(wpa_s);
3512 }
3513
3514
3515 int wpas_p2p_service_p2ps_id_exists(struct wpa_supplicant *wpa_s, u32 adv_id)
3516 {
3517         if (adv_id == 0)
3518                 return 1;
3519
3520         if (p2p_service_p2ps_id(wpa_s->global->p2p, adv_id))
3521                 return 1;
3522
3523         return 0;
3524 }
3525
3526
3527 int wpas_p2p_service_del_asp(struct wpa_supplicant *wpa_s, u32 adv_id)
3528 {
3529         return p2p_service_del_asp(wpa_s->global->p2p, adv_id);
3530 }
3531
3532
3533 int wpas_p2p_service_add_asp(struct wpa_supplicant *wpa_s,
3534                              int auto_accept, u32 adv_id,
3535                              const char *adv_str, u8 svc_state,
3536                              u16 config_methods, const char *svc_info)
3537 {
3538         return p2p_service_add_asp(wpa_s->global->p2p, auto_accept, adv_id,
3539                                    adv_str, svc_state, config_methods,
3540                                    svc_info);
3541 }
3542
3543
3544 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
3545                                  struct wpabuf *query, struct wpabuf *resp)
3546 {
3547         struct p2p_srv_bonjour *bsrv;
3548
3549         bsrv = os_zalloc(sizeof(*bsrv));
3550         if (bsrv == NULL)
3551                 return -1;
3552         bsrv->query = query;
3553         bsrv->resp = resp;
3554         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
3555
3556         wpas_p2p_sd_service_update(wpa_s);
3557         return 0;
3558 }
3559
3560
3561 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
3562                                  const struct wpabuf *query)
3563 {
3564         struct p2p_srv_bonjour *bsrv;
3565
3566         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
3567         if (bsrv == NULL)
3568                 return -1;
3569         wpas_p2p_srv_bonjour_free(bsrv);
3570         wpas_p2p_sd_service_update(wpa_s);
3571         return 0;
3572 }
3573
3574
3575 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
3576                               const char *service)
3577 {
3578         struct p2p_srv_upnp *usrv;
3579
3580         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
3581                 return 0; /* Already listed */
3582         usrv = os_zalloc(sizeof(*usrv));
3583         if (usrv == NULL)
3584                 return -1;
3585         usrv->version = version;
3586         usrv->service = os_strdup(service);
3587         if (usrv->service == NULL) {
3588                 os_free(usrv);
3589                 return -1;
3590         }
3591         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
3592
3593         wpas_p2p_sd_service_update(wpa_s);
3594         return 0;
3595 }
3596
3597
3598 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
3599                               const char *service)
3600 {
3601         struct p2p_srv_upnp *usrv;
3602
3603         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
3604         if (usrv == NULL)
3605                 return -1;
3606         wpas_p2p_srv_upnp_free(usrv);
3607         wpas_p2p_sd_service_update(wpa_s);
3608         return 0;
3609 }
3610
3611
3612 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
3613                                          const u8 *peer, const char *params,
3614                                          unsigned int generated_pin)
3615 {
3616         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
3617                        " %08d%s", MAC2STR(peer), generated_pin, params);
3618 }
3619
3620
3621 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
3622                                         const u8 *peer, const char *params)
3623 {
3624         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
3625                        "%s", MAC2STR(peer), params);
3626 }
3627
3628
3629 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
3630                                const u8 *dev_addr, const u8 *pri_dev_type,
3631                                const char *dev_name, u16 supp_config_methods,
3632                                u8 dev_capab, u8 group_capab, const u8 *group_id,
3633                                size_t group_id_len)
3634 {
3635         struct wpa_supplicant *wpa_s = ctx;
3636         char devtype[WPS_DEV_TYPE_BUFSIZE];
3637         char params[300];
3638         u8 empty_dev_type[8];
3639         unsigned int generated_pin = 0;
3640         struct wpa_supplicant *group = NULL;
3641         int res;
3642
3643         if (group_id) {
3644                 for (group = wpa_s->global->ifaces; group; group = group->next)
3645                 {
3646                         struct wpa_ssid *s = group->current_ssid;
3647                         if (s != NULL &&
3648                             s->mode == WPAS_MODE_P2P_GO &&
3649                             group_id_len - ETH_ALEN == s->ssid_len &&
3650                             os_memcmp(group_id + ETH_ALEN, s->ssid,
3651                                       s->ssid_len) == 0)
3652                                 break;
3653                 }
3654         }
3655
3656         if (pri_dev_type == NULL) {
3657                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
3658                 pri_dev_type = empty_dev_type;
3659         }
3660         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
3661                           " pri_dev_type=%s name='%s' config_methods=0x%x "
3662                           "dev_capab=0x%x group_capab=0x%x%s%s",
3663                           MAC2STR(dev_addr),
3664                           wps_dev_type_bin2str(pri_dev_type, devtype,
3665                                                sizeof(devtype)),
3666                           dev_name, supp_config_methods, dev_capab, group_capab,
3667                           group ? " group=" : "",
3668                           group ? group->ifname : "");
3669         if (os_snprintf_error(sizeof(params), res))
3670                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
3671         params[sizeof(params) - 1] = '\0';
3672
3673         if (config_methods & WPS_CONFIG_DISPLAY) {
3674                 generated_pin = wps_generate_pin();
3675                 wpas_prov_disc_local_display(wpa_s, peer, params,
3676                                              generated_pin);
3677         } else if (config_methods & WPS_CONFIG_KEYPAD)
3678                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
3679         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
3680                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
3681                                MACSTR "%s", MAC2STR(peer), params);
3682
3683         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
3684                                             P2P_PROV_DISC_SUCCESS,
3685                                             config_methods, generated_pin);
3686 }
3687
3688
3689 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
3690 {
3691         struct wpa_supplicant *wpa_s = ctx;
3692         unsigned int generated_pin = 0;
3693         char params[20];
3694
3695         if (wpa_s->pending_pd_before_join &&
3696             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
3697              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
3698                 wpa_s->pending_pd_before_join = 0;
3699                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
3700                            "join-existing-group operation");
3701                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
3702                 return;
3703         }
3704
3705         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
3706             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
3707                 int res;
3708
3709                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
3710                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
3711                 if (os_snprintf_error(sizeof(params), res))
3712                         params[sizeof(params) - 1] = '\0';
3713         } else
3714                 params[0] = '\0';
3715
3716         if (config_methods & WPS_CONFIG_DISPLAY)
3717                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
3718         else if (config_methods & WPS_CONFIG_KEYPAD) {
3719                 generated_pin = wps_generate_pin();
3720                 wpas_prov_disc_local_display(wpa_s, peer, params,
3721                                              generated_pin);
3722         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
3723                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
3724                                MACSTR "%s", MAC2STR(peer), params);
3725
3726         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
3727                                             P2P_PROV_DISC_SUCCESS,
3728                                             config_methods, generated_pin);
3729 }
3730
3731
3732 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
3733                                 enum p2p_prov_disc_status status,
3734                                 u32 adv_id, const u8 *adv_mac,
3735                                 const char *deferred_session_resp)
3736 {
3737         struct wpa_supplicant *wpa_s = ctx;
3738
3739         if (wpa_s->p2p_fallback_to_go_neg) {
3740                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
3741                         "failed - fall back to GO Negotiation");
3742                 wpa_msg_global(wpa_s->parent, MSG_INFO,
3743                                P2P_EVENT_FALLBACK_TO_GO_NEG
3744                                "reason=PD-failed");
3745                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
3746                 return;
3747         }
3748
3749         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
3750                 wpa_s->pending_pd_before_join = 0;
3751                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
3752                            "join-existing-group operation (no ACK for PD "
3753                            "Req attempts)");
3754                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
3755                 return;
3756         }
3757
3758         if (adv_id && adv_mac && deferred_session_resp) {
3759                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3760                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
3761                                " deferred_session_resp='%s'",
3762                                MAC2STR(peer), status, adv_id,
3763                                deferred_session_resp);
3764         } else if (adv_id && adv_mac) {
3765                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3766                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
3767                                MAC2STR(peer), status, adv_id);
3768         } else {
3769                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3770                                " p2p_dev_addr=" MACSTR " status=%d",
3771                                MAC2STR(peer), status);
3772         }
3773
3774         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
3775                                             status, 0, 0);
3776 }
3777
3778
3779 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
3780 {
3781         if (channels == NULL)
3782                 return 1; /* Assume no restrictions */
3783         return p2p_channels_includes_freq(channels, freq);
3784
3785 }
3786
3787
3788 /**
3789  * Pick the best frequency to use from all the currently used frequencies.
3790  */
3791 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
3792                                         struct wpa_used_freq_data *freqs,
3793                                         unsigned int num)
3794 {
3795         unsigned int i, c;
3796
3797         /* find a candidate freq that is supported by P2P */
3798         for (c = 0; c < num; c++)
3799                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
3800                         break;
3801
3802         if (c == num)
3803                 return 0;
3804
3805         /* once we have a candidate, try to find a 'better' one */
3806         for (i = c + 1; i < num; i++) {
3807                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
3808                         continue;
3809
3810                 /*
3811                  * 1. Infrastructure station interfaces have higher preference.
3812                  * 2. P2P Clients have higher preference.
3813                  * 3. All others.
3814                  */
3815                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
3816                         c = i;
3817                         break;
3818                 }
3819
3820                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
3821                         c = i;
3822         }
3823         return freqs[c].freq;
3824 }
3825
3826
3827 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
3828                                   const u8 *go_dev_addr, const u8 *ssid,
3829                                   size_t ssid_len, int *go, u8 *group_bssid,
3830                                   int *force_freq, int persistent_group,
3831                                   const struct p2p_channels *channels,
3832                                   int dev_pw_id)
3833 {
3834         struct wpa_supplicant *wpa_s = ctx;
3835         struct wpa_ssid *s;
3836         struct wpa_used_freq_data *freqs;
3837         struct wpa_supplicant *grp;
3838         int best_freq;
3839
3840         if (!persistent_group) {
3841                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3842                            " to join an active group (SSID: %s)",
3843                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
3844                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3845                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
3846                      == 0 ||
3847                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
3848                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
3849                                    "authorized invitation");
3850                         goto accept_inv;
3851                 }
3852
3853 #ifdef CONFIG_WPS_NFC
3854                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
3855                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
3856                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
3857                         wpa_s->p2p_wps_method = WPS_NFC;
3858                         wpa_s->pending_join_wps_method = WPS_NFC;
3859                         os_memcpy(wpa_s->pending_join_dev_addr,
3860                                   go_dev_addr, ETH_ALEN);
3861                         os_memcpy(wpa_s->pending_join_iface_addr,
3862                                   bssid, ETH_ALEN);
3863                         goto accept_inv;
3864                 }
3865 #endif /* CONFIG_WPS_NFC */
3866
3867                 /*
3868                  * Do not accept the invitation automatically; notify user and
3869                  * request approval.
3870                  */
3871                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3872         }
3873
3874         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
3875         if (grp) {
3876                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
3877                            "running persistent group");
3878                 if (*go)
3879                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
3880                 goto accept_inv;
3881         }
3882
3883         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3884             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
3885                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
3886                            "invitation to re-invoke a persistent group");
3887                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
3888         } else if (!wpa_s->conf->persistent_reconnect)
3889                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3890
3891         for (s = wpa_s->conf->ssid; s; s = s->next) {
3892                 if (s->disabled == 2 &&
3893                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
3894                     s->ssid_len == ssid_len &&
3895                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3896                         break;
3897         }
3898
3899         if (!s) {
3900                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3901                            " requested reinvocation of an unknown group",
3902                            MAC2STR(sa));
3903                 return P2P_SC_FAIL_UNKNOWN_GROUP;
3904         }
3905
3906         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
3907                 *go = 1;
3908                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3909                         wpa_printf(MSG_DEBUG, "P2P: The only available "
3910                                    "interface is already in use - reject "
3911                                    "invitation");
3912                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3913                 }
3914                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3915         } else if (s->mode == WPAS_MODE_P2P_GO) {
3916                 *go = 1;
3917                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3918                 {
3919                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3920                                    "interface address for the group");
3921                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3922                 }
3923                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3924                           ETH_ALEN);
3925         }
3926
3927 accept_inv:
3928         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3929
3930         best_freq = 0;
3931         freqs = os_calloc(wpa_s->num_multichan_concurrent,
3932                           sizeof(struct wpa_used_freq_data));
3933         if (freqs) {
3934                 int num_channels = wpa_s->num_multichan_concurrent;
3935                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3936                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3937                 os_free(freqs);
3938         }
3939
3940         /* Get one of the frequencies currently in use */
3941         if (best_freq > 0) {
3942                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3943                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3944
3945                 if (wpa_s->num_multichan_concurrent < 2 ||
3946                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3947                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3948                         *force_freq = best_freq;
3949                 }
3950         }
3951
3952         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3953             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3954                 if (*go == 0) {
3955                         /* We are the client */
3956                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3957                                    "running a GO but we are capable of MCC, "
3958                                    "figure out the best channel to use");
3959                         *force_freq = 0;
3960                 } else if (!freq_included(channels, *force_freq)) {
3961                         /* We are the GO, and *force_freq is not in the
3962                          * intersection */
3963                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3964                                    "in intersection but we are capable of MCC, "
3965                                    "figure out the best channel to use",
3966                                    *force_freq);
3967                         *force_freq = 0;
3968                 }
3969         }
3970
3971         return P2P_SC_SUCCESS;
3972 }
3973
3974
3975 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3976                                      const u8 *ssid, size_t ssid_len,
3977                                      const u8 *go_dev_addr, u8 status,
3978                                      int op_freq)
3979 {
3980         struct wpa_supplicant *wpa_s = ctx;
3981         struct wpa_ssid *s;
3982
3983         for (s = wpa_s->conf->ssid; s; s = s->next) {
3984                 if (s->disabled == 2 &&
3985                     s->ssid_len == ssid_len &&
3986                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3987                         break;
3988         }
3989
3990         if (status == P2P_SC_SUCCESS) {
3991                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3992                            " was accepted; op_freq=%d MHz, SSID=%s",
3993                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3994                 if (s) {
3995                         int go = s->mode == WPAS_MODE_P2P_GO;
3996                         wpas_p2p_group_add_persistent(
3997                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3998                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3999                 } else if (bssid) {
4000                         wpa_s->user_initiated_pd = 0;
4001                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
4002                                       wpa_s->p2p_wps_method, 0, op_freq,
4003                                       ssid, ssid_len);
4004                 }
4005                 return;
4006         }
4007
4008         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
4009                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
4010                            " was rejected (status %u)", MAC2STR(sa), status);
4011                 return;
4012         }
4013
4014         if (!s) {
4015                 if (bssid) {
4016                         wpa_msg_global(wpa_s, MSG_INFO,
4017                                        P2P_EVENT_INVITATION_RECEIVED
4018                                        "sa=" MACSTR " go_dev_addr=" MACSTR
4019                                        " bssid=" MACSTR " unknown-network",
4020                                        MAC2STR(sa), MAC2STR(go_dev_addr),
4021                                        MAC2STR(bssid));
4022                 } else {
4023                         wpa_msg_global(wpa_s, MSG_INFO,
4024                                        P2P_EVENT_INVITATION_RECEIVED
4025                                        "sa=" MACSTR " go_dev_addr=" MACSTR
4026                                        " unknown-network",
4027                                        MAC2STR(sa), MAC2STR(go_dev_addr));
4028                 }
4029                 return;
4030         }
4031
4032         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
4033                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
4034                                "sa=" MACSTR " persistent=%d freq=%d",
4035                                MAC2STR(sa), s->id, op_freq);
4036         } else {
4037                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
4038                                "sa=" MACSTR " persistent=%d",
4039                                MAC2STR(sa), s->id);
4040         }
4041 }
4042
4043
4044 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
4045                                         struct wpa_ssid *ssid,
4046                                         const u8 *peer, int inv)
4047 {
4048         size_t i;
4049
4050         if (ssid == NULL)
4051                 return;
4052
4053         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
4054                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
4055                               ETH_ALEN) == 0)
4056                         break;
4057         }
4058         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
4059                 if (ssid->mode != WPAS_MODE_P2P_GO &&
4060                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
4061                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
4062                                    "due to invitation result", ssid->id);
4063                         wpas_notify_network_removed(wpa_s, ssid);
4064                         wpa_config_remove_network(wpa_s->conf, ssid->id);
4065                         return;
4066                 }
4067                 return; /* Peer not found in client list */
4068         }
4069
4070         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
4071                    "group %d client list%s",
4072                    MAC2STR(peer), ssid->id,
4073                    inv ? " due to invitation result" : "");
4074         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
4075                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
4076                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
4077         ssid->num_p2p_clients--;
4078         if (wpa_s->parent->conf->update_config &&
4079             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
4080                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
4081 }
4082
4083
4084 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
4085                                           const u8 *peer)
4086 {
4087         struct wpa_ssid *ssid;
4088
4089         wpa_s = wpa_s->global->p2p_invite_group;
4090         if (wpa_s == NULL)
4091                 return; /* No known invitation group */
4092         ssid = wpa_s->current_ssid;
4093         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
4094             !ssid->p2p_persistent_group)
4095                 return; /* Not operating as a GO in persistent group */
4096         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
4097                                        ssid->ssid, ssid->ssid_len);
4098         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
4099 }
4100
4101
4102 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
4103                                    const struct p2p_channels *channels,
4104                                    const u8 *peer, int neg_freq,
4105                                    int peer_oper_freq)
4106 {
4107         struct wpa_supplicant *wpa_s = ctx;
4108         struct wpa_ssid *ssid;
4109         int freq;
4110
4111         if (bssid) {
4112                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
4113                                "status=%d " MACSTR,
4114                                status, MAC2STR(bssid));
4115         } else {
4116                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
4117                                "status=%d ", status);
4118         }
4119         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
4120
4121         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
4122                    status, MAC2STR(peer));
4123         if (wpa_s->pending_invite_ssid_id == -1) {
4124                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
4125                         wpas_remove_persistent_client(wpa_s, peer);
4126                 return; /* Invitation to active group */
4127         }
4128
4129         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
4130                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
4131                            "invitation exchange to indicate readiness for "
4132                            "re-invocation");
4133         }
4134
4135         if (status != P2P_SC_SUCCESS) {
4136                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
4137                         ssid = wpa_config_get_network(
4138                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
4139                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
4140                 }
4141                 wpas_p2p_remove_pending_group_interface(wpa_s);
4142                 return;
4143         }
4144
4145         ssid = wpa_config_get_network(wpa_s->conf,
4146                                       wpa_s->pending_invite_ssid_id);
4147         if (ssid == NULL) {
4148                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
4149                            "data matching with invitation");
4150                 return;
4151         }
4152
4153         /*
4154          * The peer could have missed our ctrl::ack frame for Invitation
4155          * Response and continue retransmitting the frame. To reduce the
4156          * likelihood of the peer not getting successful TX status for the
4157          * Invitation Response frame, wait a short time here before starting
4158          * the persistent group so that we will remain on the current channel to
4159          * acknowledge any possible retransmission from the peer.
4160          */
4161         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
4162                 "starting persistent group");
4163         os_sleep(0, 50000);
4164
4165         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
4166             freq_included(channels, neg_freq))
4167                 freq = neg_freq;
4168         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
4169                  freq_included(channels, peer_oper_freq))
4170                 freq = peer_oper_freq;
4171         else
4172                 freq = 0;
4173
4174         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
4175                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
4176         wpas_p2p_group_add_persistent(wpa_s, ssid,
4177                                       ssid->mode == WPAS_MODE_P2P_GO,
4178                                       wpa_s->p2p_persistent_go_freq,
4179                                       freq,
4180                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
4181                                       channels,
4182                                       ssid->mode == WPAS_MODE_P2P_GO ?
4183                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4184                                       0);
4185 }
4186
4187
4188 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
4189                                     unsigned int freq)
4190 {
4191         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
4192                 return 1;
4193         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
4194 }
4195
4196
4197 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
4198 {
4199         reg->channel[reg->channels] = chan;
4200         reg->channels++;
4201 }
4202
4203
4204 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
4205                                      struct p2p_channels *chan,
4206                                      struct p2p_channels *cli_chan)
4207 {
4208         int i, cla = 0;
4209
4210         wpa_s->global->p2p_24ghz_social_channels = 1;
4211
4212         os_memset(cli_chan, 0, sizeof(*cli_chan));
4213
4214         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
4215                    "band");
4216
4217         /* Operating class 81 - 2.4 GHz band channels 1..13 */
4218         chan->reg_class[cla].reg_class = 81;
4219         chan->reg_class[cla].channels = 0;
4220         for (i = 0; i < 11; i++) {
4221                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
4222                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
4223         }
4224         if (chan->reg_class[cla].channels)
4225                 cla++;
4226
4227         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
4228                    "band");
4229
4230         /* Operating class 115 - 5 GHz, channels 36-48 */
4231         chan->reg_class[cla].reg_class = 115;
4232         chan->reg_class[cla].channels = 0;
4233         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
4234                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
4235         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
4236                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
4237         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
4238                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
4239         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
4240                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
4241         if (chan->reg_class[cla].channels)
4242                 cla++;
4243
4244         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
4245                    "band");
4246
4247         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
4248         chan->reg_class[cla].reg_class = 124;
4249         chan->reg_class[cla].channels = 0;
4250         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
4251                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
4252         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
4253                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
4254         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
4255                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
4256         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
4257                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
4258         if (chan->reg_class[cla].channels)
4259                 cla++;
4260
4261         chan->reg_classes = cla;
4262         return 0;
4263 }
4264
4265
4266 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
4267                                           u16 num_modes,
4268                                           enum hostapd_hw_mode mode)
4269 {
4270         u16 i;
4271
4272         for (i = 0; i < num_modes; i++) {
4273                 if (modes[i].mode == mode)
4274                         return &modes[i];
4275         }
4276
4277         return NULL;
4278 }
4279
4280
4281 enum chan_allowed {
4282         NOT_ALLOWED, NO_IR, ALLOWED
4283 };
4284
4285 static int has_channel(struct wpa_global *global,
4286                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
4287 {
4288         int i;
4289         unsigned int freq;
4290
4291         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
4292                 chan * 5;
4293         if (wpas_p2p_disallowed_freq(global, freq))
4294                 return NOT_ALLOWED;
4295
4296         for (i = 0; i < mode->num_channels; i++) {
4297                 if (mode->channels[i].chan == chan) {
4298                         if (flags)
4299                                 *flags = mode->channels[i].flag;
4300                         if (mode->channels[i].flag &
4301                             (HOSTAPD_CHAN_DISABLED |
4302                              HOSTAPD_CHAN_RADAR))
4303                                 return NOT_ALLOWED;
4304                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
4305                                 return NO_IR;
4306                         return ALLOWED;
4307                 }
4308         }
4309
4310         return NOT_ALLOWED;
4311 }
4312
4313
4314 struct p2p_oper_class_map {
4315         enum hostapd_hw_mode mode;
4316         u8 op_class;
4317         u8 min_chan;
4318         u8 max_chan;
4319         u8 inc;
4320         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
4321 };
4322
4323 static struct p2p_oper_class_map op_class[] = {
4324         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
4325 #if 0 /* Do not enable HT40 on 2 GHz for now */
4326         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
4327         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
4328 #endif
4329         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
4330         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
4331         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
4332         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
4333         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
4334         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
4335
4336         /*
4337          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
4338          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
4339          * 80 MHz, but currently use the following definition for simplicity
4340          * (these center frequencies are not actual channels, which makes
4341          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
4342          * removing invalid channels.
4343          */
4344         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
4345         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
4346         { -1, 0, 0, 0, 0, BW20 }
4347 };
4348
4349
4350 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
4351                                      struct hostapd_hw_modes *mode,
4352                                      u8 channel)
4353 {
4354         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
4355         unsigned int i;
4356
4357         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
4358                 return 0;
4359
4360         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
4361                 /*
4362                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
4363                  * so the center channel is 6 channels away from the start/end.
4364                  */
4365                 if (channel >= center_channels[i] - 6 &&
4366                     channel <= center_channels[i] + 6)
4367                         return center_channels[i];
4368
4369         return 0;
4370 }
4371
4372
4373 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
4374                                                struct hostapd_hw_modes *mode,
4375                                                u8 channel, u8 bw)
4376 {
4377         u8 center_chan;
4378         int i, flags;
4379         enum chan_allowed res, ret = ALLOWED;
4380
4381         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
4382         if (!center_chan)
4383                 return NOT_ALLOWED;
4384         if (center_chan >= 58 && center_chan <= 138)
4385                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
4386
4387         /* check all the channels are available */
4388         for (i = 0; i < 4; i++) {
4389                 int adj_chan = center_chan - 6 + i * 4;
4390
4391                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
4392                 if (res == NOT_ALLOWED)
4393                         return NOT_ALLOWED;
4394                 if (res == NO_IR)
4395                         ret = NO_IR;
4396
4397                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
4398                         return NOT_ALLOWED;
4399                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
4400                         return NOT_ALLOWED;
4401                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
4402                         return NOT_ALLOWED;
4403                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
4404                         return NOT_ALLOWED;
4405         }
4406
4407         return ret;
4408 }
4409
4410
4411 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
4412                                                  struct hostapd_hw_modes *mode,
4413                                                  u8 channel, u8 bw)
4414 {
4415         int flag = 0;
4416         enum chan_allowed res, res2;
4417
4418         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
4419         if (bw == BW40MINUS) {
4420                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
4421                         return NOT_ALLOWED;
4422                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
4423         } else if (bw == BW40PLUS) {
4424                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
4425                         return NOT_ALLOWED;
4426                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
4427         } else if (bw == BW80) {
4428                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
4429         }
4430
4431         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
4432                 return NOT_ALLOWED;
4433         if (res == NO_IR || res2 == NO_IR)
4434                 return NO_IR;
4435         return res;
4436 }
4437
4438
4439 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
4440                                    struct p2p_channels *chan,
4441                                    struct p2p_channels *cli_chan)
4442 {
4443         struct hostapd_hw_modes *mode;
4444         int cla, op, cli_cla;
4445
4446         if (wpa_s->hw.modes == NULL) {
4447                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
4448                            "of all supported channels; assume dualband "
4449                            "support");
4450                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
4451         }
4452
4453         cla = cli_cla = 0;
4454
4455         for (op = 0; op_class[op].op_class; op++) {
4456                 struct p2p_oper_class_map *o = &op_class[op];
4457                 u8 ch;
4458                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
4459
4460                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
4461                 if (mode == NULL)
4462                         continue;
4463                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
4464                         wpa_s->global->p2p_24ghz_social_channels = 1;
4465                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
4466                         enum chan_allowed res;
4467                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
4468                         if (res == ALLOWED) {
4469                                 if (reg == NULL) {
4470                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
4471                                                    o->op_class);
4472                                         reg = &chan->reg_class[cla];
4473                                         cla++;
4474                                         reg->reg_class = o->op_class;
4475                                 }
4476                                 reg->channel[reg->channels] = ch;
4477                                 reg->channels++;
4478                         } else if (res == NO_IR &&
4479                                    wpa_s->conf->p2p_add_cli_chan) {
4480                                 if (cli_reg == NULL) {
4481                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
4482                                                    o->op_class);
4483                                         cli_reg = &cli_chan->reg_class[cli_cla];
4484                                         cli_cla++;
4485                                         cli_reg->reg_class = o->op_class;
4486                                 }
4487                                 cli_reg->channel[cli_reg->channels] = ch;
4488                                 cli_reg->channels++;
4489                         }
4490                 }
4491                 if (reg) {
4492                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
4493                                     reg->channel, reg->channels);
4494                 }
4495                 if (cli_reg) {
4496                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
4497                                     cli_reg->channel, cli_reg->channels);
4498                 }
4499         }
4500
4501         chan->reg_classes = cla;
4502         cli_chan->reg_classes = cli_cla;
4503
4504         return 0;
4505 }
4506
4507
4508 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
4509                            struct hostapd_hw_modes *mode, u8 channel)
4510 {
4511         int op;
4512         enum chan_allowed ret;
4513
4514         for (op = 0; op_class[op].op_class; op++) {
4515                 struct p2p_oper_class_map *o = &op_class[op];
4516                 u8 ch;
4517
4518                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
4519                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
4520                             o->bw == BW20 || ch != channel)
4521                                 continue;
4522                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
4523                         if (ret == ALLOWED)
4524                                 return (o->bw == BW40MINUS) ? -1 : 1;
4525                 }
4526         }
4527         return 0;
4528 }
4529
4530
4531 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
4532                               struct hostapd_hw_modes *mode, u8 channel)
4533 {
4534         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
4535                 return 0;
4536
4537         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
4538 }
4539
4540
4541 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
4542                         size_t buf_len)
4543 {
4544         struct wpa_supplicant *wpa_s = ctx;
4545
4546         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4547                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
4548                         break;
4549         }
4550         if (wpa_s == NULL)
4551                 return -1;
4552
4553         return wpa_drv_get_noa(wpa_s, buf, buf_len);
4554 }
4555
4556
4557 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
4558                                               const u8 *ssid, size_t ssid_len)
4559 {
4560         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4561                 struct wpa_ssid *s = wpa_s->current_ssid;
4562                 if (s == NULL)
4563                         continue;
4564                 if (s->mode != WPAS_MODE_P2P_GO &&
4565                     s->mode != WPAS_MODE_AP &&
4566                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4567                         continue;
4568                 if (s->ssid_len != ssid_len ||
4569                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
4570                         continue;
4571                 return wpa_s;
4572         }
4573
4574         return NULL;
4575
4576 }
4577
4578
4579 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
4580                                                   const u8 *peer_dev_addr)
4581 {
4582         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4583                 struct wpa_ssid *ssid = wpa_s->current_ssid;
4584                 if (ssid == NULL)
4585                         continue;
4586                 if (ssid->mode != WPAS_MODE_INFRA)
4587                         continue;
4588                 if (wpa_s->wpa_state != WPA_COMPLETED &&
4589                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
4590                         continue;
4591                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
4592                         return wpa_s;
4593         }
4594
4595         return NULL;
4596 }
4597
4598
4599 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
4600 {
4601         struct wpa_supplicant *wpa_s = ctx;
4602
4603         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
4604 }
4605
4606
4607 static int wpas_is_concurrent_session_active(void *ctx)
4608 {
4609         struct wpa_supplicant *wpa_s = ctx;
4610         struct wpa_supplicant *ifs;
4611
4612         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
4613                 if (ifs == wpa_s)
4614                         continue;
4615                 if (ifs->wpa_state > WPA_ASSOCIATED)
4616                         return 1;
4617         }
4618         return 0;
4619 }
4620
4621
4622 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
4623 {
4624         struct wpa_supplicant *wpa_s = ctx;
4625         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
4626 }
4627
4628
4629 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
4630                                   const char *conf_p2p_dev)
4631 {
4632         struct wpa_interface iface;
4633         struct wpa_supplicant *p2pdev_wpa_s;
4634         char ifname[100];
4635         char force_name[100];
4636         int ret;
4637
4638         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
4639                           wpa_s->ifname);
4640         if (os_snprintf_error(sizeof(ifname), ret))
4641                 return -1;
4642         force_name[0] = '\0';
4643         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
4644         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
4645                              force_name, wpa_s->pending_interface_addr, NULL);
4646         if (ret < 0) {
4647                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
4648                 return ret;
4649         }
4650         os_strlcpy(wpa_s->pending_interface_name, ifname,
4651                    sizeof(wpa_s->pending_interface_name));
4652
4653         os_memset(&iface, 0, sizeof(iface));
4654         iface.p2p_mgmt = 1;
4655         iface.ifname = wpa_s->pending_interface_name;
4656         iface.driver = wpa_s->driver->name;
4657         iface.driver_param = wpa_s->conf->driver_param;
4658
4659         /*
4660          * If a P2P Device configuration file was given, use it as the interface
4661          * configuration file (instead of using parent's configuration file.
4662          */
4663         if (conf_p2p_dev) {
4664                 iface.confname = conf_p2p_dev;
4665                 iface.ctrl_interface = NULL;
4666         } else {
4667                 iface.confname = wpa_s->confname;
4668                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
4669         }
4670         iface.conf_p2p_dev = NULL;
4671
4672         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
4673         if (!p2pdev_wpa_s) {
4674                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
4675                 return -1;
4676         }
4677         wpa_s->p2p_dev = p2pdev_wpa_s;
4678
4679         wpa_s->pending_interface_name[0] = '\0';
4680         return 0;
4681 }
4682
4683
4684 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
4685                                const u8 *noa, size_t noa_len)
4686 {
4687         struct wpa_supplicant *wpa_s, *intf = ctx;
4688         char hex[100];
4689
4690         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4691                 if (wpa_s->waiting_presence_resp)
4692                         break;
4693         }
4694         if (!wpa_s) {
4695                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
4696                 return;
4697         }
4698         wpa_s->waiting_presence_resp = 0;
4699
4700         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
4701         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
4702                 " status=%u noa=%s", MAC2STR(src), status, hex);
4703 }
4704
4705
4706 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
4707                                      size_t ssid_len, u8 *go_dev_addr,
4708                                      u8 *ret_ssid, size_t *ret_ssid_len)
4709 {
4710         struct wpa_supplicant *wpa_s = ctx;
4711         struct wpa_ssid *s;
4712
4713         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
4714         if (s) {
4715                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
4716                 *ret_ssid_len = s->ssid_len;
4717                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
4718                 return 1;
4719         }
4720
4721         return 0;
4722 }
4723
4724
4725 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
4726                             u8 *ssid, size_t *ssid_len, int *group_iface)
4727 {
4728         struct wpa_supplicant *wpa_s = ctx;
4729         struct wpa_ssid *s;
4730         u8 bssid[ETH_ALEN];
4731
4732         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
4733         if (!s) {
4734                 s = wpas_p2p_get_persistent_go(wpa_s);
4735                 if (s)
4736                         os_memcpy(bssid, s->bssid, ETH_ALEN);
4737         }
4738
4739         *group_iface = wpas_p2p_create_iface(wpa_s);
4740         if (!s)
4741                 return 0;
4742
4743         os_memcpy(intended_addr, bssid, ETH_ALEN);
4744         os_memcpy(ssid, s->ssid, s->ssid_len);
4745         *ssid_len = s->ssid_len;
4746
4747         return 1;
4748 }
4749
4750
4751 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
4752                                     const u8 *ssid, size_t ssid_len)
4753 {
4754         struct wpa_supplicant *wpa_s = ctx;
4755         struct wpa_ssid *s;
4756         int save_config = 0;
4757         size_t i;
4758
4759         /* Start with our first choice of Persistent Groups */
4760         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
4761                 if (go && ssid && ssid_len &&
4762                     s->ssid_len == ssid_len &&
4763                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
4764                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
4765                         break;
4766
4767                 /* Remove stale persistent group */
4768                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
4769                         wpa_config_remove_network(wpa_s->conf, s->id);
4770                         save_config = 1;
4771                         continue;
4772                 }
4773
4774                 for (i = 0; i < s->num_p2p_clients; i++) {
4775                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
4776                                       peer, ETH_ALEN) != 0)
4777                                 continue;
4778
4779                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
4780                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
4781                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
4782                         break;
4783                 }
4784                 s->num_p2p_clients--;
4785                 save_config = 1;
4786         }
4787
4788         if (save_config)
4789                 p2p_config_write(wpa_s);
4790
4791         /* Return TRUE if valid SSID remains */
4792         return s != NULL;
4793 }
4794
4795
4796 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
4797                                     const u8 *adv_mac, const u8 *ses_mac,
4798                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
4799                                     u8 conncap, int passwd_id,
4800                                     const u8 *persist_ssid,
4801                                     size_t persist_ssid_size, int response_done,
4802                                     int prov_start, const char *session_info)
4803 {
4804         struct wpa_supplicant *wpa_s = ctx;
4805         u8 mac[ETH_ALEN];
4806         struct wpa_ssid *persistent_go, *stale, *s;
4807         int save_config = 0;
4808         struct wpa_supplicant *go_wpa_s;
4809
4810         if (!dev)
4811                 return;
4812
4813         os_memset(mac, 0, ETH_ALEN);
4814         if (!adv_mac)
4815                 adv_mac = mac;
4816         if (!ses_mac)
4817                 ses_mac = mac;
4818         if (!grp_mac)
4819                 grp_mac = mac;
4820
4821         if (prov_start) {
4822                 if (session_info == NULL) {
4823                         wpa_msg_global(wpa_s, MSG_INFO,
4824                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4825                                        " adv_id=%x conncap=%x"
4826                                        " adv_mac=" MACSTR
4827                                        " session=%x mac=" MACSTR
4828                                        " dev_passwd_id=%d",
4829                                        MAC2STR(dev), adv_id, conncap,
4830                                        MAC2STR(adv_mac),
4831                                        ses_id, MAC2STR(ses_mac),
4832                                        passwd_id);
4833                 } else {
4834                         wpa_msg_global(wpa_s, MSG_INFO,
4835                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4836                                        " adv_id=%x conncap=%x"
4837                                        " adv_mac=" MACSTR
4838                                        " session=%x mac=" MACSTR
4839                                        " dev_passwd_id=%d info='%s'",
4840                                        MAC2STR(dev), adv_id, conncap,
4841                                        MAC2STR(adv_mac),
4842                                        ses_id, MAC2STR(ses_mac),
4843                                        passwd_id, session_info);
4844                 }
4845                 return;
4846         }
4847
4848         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4849         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4850
4851         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4852                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4853                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4854
4855                 if (persistent_go && !persistent_go->num_p2p_clients) {
4856                         /* remove empty persistent GO */
4857                         wpa_config_remove_network(wpa_s->conf,
4858                                                   persistent_go->id);
4859                 }
4860
4861                 wpa_msg_global(wpa_s, MSG_INFO,
4862                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4863                                " status=%d"
4864                                " adv_id=%x adv_mac=" MACSTR
4865                                " session=%x mac=" MACSTR,
4866                                MAC2STR(dev), status,
4867                                adv_id, MAC2STR(adv_mac),
4868                                ses_id, MAC2STR(ses_mac));
4869                 return;
4870         }
4871
4872         /* Clean up stale persistent groups with this device */
4873         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4874                                     persist_ssid_size);
4875         for (;;) {
4876                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4877                 if (!stale)
4878                         break;
4879
4880                 if (s && s->ssid_len == stale->ssid_len &&
4881                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4882                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4883                         break;
4884
4885                 /* Remove stale persistent group */
4886                 if (stale->mode != WPAS_MODE_P2P_GO ||
4887                     stale->num_p2p_clients <= 1) {
4888                         wpa_config_remove_network(wpa_s->conf, stale->id);
4889                 } else {
4890                         size_t i;
4891
4892                         for (i = 0; i < stale->num_p2p_clients; i++) {
4893                                 if (os_memcmp(stale->p2p_client_list +
4894                                               i * ETH_ALEN,
4895                                               dev, ETH_ALEN) == 0) {
4896                                         os_memmove(stale->p2p_client_list +
4897                                                    i * ETH_ALEN,
4898                                                    stale->p2p_client_list +
4899                                                    (i + 1) * ETH_ALEN,
4900                                                    (stale->num_p2p_clients -
4901                                                     i - 1) * ETH_ALEN);
4902                                         break;
4903                                 }
4904                         }
4905                         stale->num_p2p_clients--;
4906                 }
4907                 save_config = 1;
4908         }
4909
4910         if (save_config)
4911                 p2p_config_write(wpa_s);
4912
4913         if (s) {
4914                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4915                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4916
4917                 if (persistent_go && s != persistent_go &&
4918                     !persistent_go->num_p2p_clients) {
4919                         /* remove empty persistent GO */
4920                         wpa_config_remove_network(wpa_s->conf,
4921                                                   persistent_go->id);
4922                         /* Save config */
4923                 }
4924
4925                 wpa_msg_global(wpa_s, MSG_INFO,
4926                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4927                                " status=%d"
4928                                " adv_id=%x adv_mac=" MACSTR
4929                                " session=%x mac=" MACSTR
4930                                " persist=%d",
4931                                MAC2STR(dev), status,
4932                                adv_id, MAC2STR(adv_mac),
4933                                ses_id, MAC2STR(ses_mac), s->id);
4934                 return;
4935         }
4936
4937         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4938                 const char *go_ifname = NULL;
4939                 if (!go_wpa_s) {
4940                         wpa_s->global->pending_p2ps_group = 1;
4941
4942                         if (wpa_s->conf->p2p_no_group_iface)
4943                                 go_ifname = wpa_s->ifname;
4944                         else if (wpa_s->pending_interface_name[0])
4945                                 go_ifname = wpa_s->pending_interface_name;
4946
4947                         if (!go_ifname) {
4948                                 wpas_p2ps_prov_complete(
4949                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4950                                         dev, adv_mac, ses_mac,
4951                                         NULL, adv_id, ses_id, 0, 0,
4952                                         NULL, 0, 0, 0, NULL);
4953                                 return;
4954                         }
4955
4956                         /* If PD Resp complete, start up the GO */
4957                         if (response_done && persistent_go) {
4958                                 wpas_p2p_group_add_persistent(
4959                                         wpa_s, persistent_go,
4960                                         0, 0, 0, 0, 0, NULL,
4961                                         persistent_go->mode ==
4962                                         WPAS_MODE_P2P_GO ?
4963                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4964                                         0);
4965                         } else if (response_done) {
4966                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
4967                         }
4968
4969                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4970                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
4971                                 wpa_s->p2ps_join_addr_valid = 1;
4972                                 wpa_dbg(wpa_s, MSG_DEBUG,
4973                                         "P2PS: Saving PIN for " MACSTR,
4974                                         MAC2STR(dev));
4975                         }
4976                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4977                         go_ifname = go_wpa_s->ifname;
4978
4979                         wpa_dbg(go_wpa_s, MSG_DEBUG,
4980                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
4981                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
4982                                                   NULL, 0, 0);
4983
4984                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
4985                         wpa_s->p2ps_join_addr_valid = 1;
4986                         wpa_dbg(wpa_s, MSG_DEBUG,
4987                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
4988                 }
4989
4990                 wpa_msg_global(wpa_s, MSG_INFO,
4991                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4992                                " status=%d conncap=%x"
4993                                " adv_id=%x adv_mac=" MACSTR
4994                                " session=%x mac=" MACSTR
4995                                " dev_passwd_id=%d go=%s",
4996                                MAC2STR(dev), status, conncap,
4997                                adv_id, MAC2STR(adv_mac),
4998                                ses_id, MAC2STR(ses_mac),
4999                                passwd_id, go_ifname);
5000                 return;
5001         }
5002
5003         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
5004                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
5005
5006         if (persistent_go && !persistent_go->num_p2p_clients) {
5007                 /* remove empty persistent GO */
5008                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
5009         }
5010
5011         if (conncap == P2PS_SETUP_CLIENT) {
5012                 wpa_msg_global(wpa_s, MSG_INFO,
5013                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
5014                                " status=%d conncap=%x"
5015                                " adv_id=%x adv_mac=" MACSTR
5016                                " session=%x mac=" MACSTR
5017                                " dev_passwd_id=%d join=" MACSTR,
5018                                MAC2STR(dev), status, conncap,
5019                                adv_id, MAC2STR(adv_mac),
5020                                ses_id, MAC2STR(ses_mac),
5021                                passwd_id, MAC2STR(grp_mac));
5022         } else {
5023                 wpa_msg_global(wpa_s, MSG_INFO,
5024                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
5025                                " status=%d conncap=%x"
5026                                " adv_id=%x adv_mac=" MACSTR
5027                                " session=%x mac=" MACSTR
5028                                " dev_passwd_id=%d",
5029                                MAC2STR(dev), status, conncap,
5030                                adv_id, MAC2STR(adv_mac),
5031                                ses_id, MAC2STR(ses_mac),
5032                                passwd_id);
5033         }
5034 }
5035
5036
5037 static int _wpas_p2p_in_progress(void *ctx)
5038 {
5039         struct wpa_supplicant *wpa_s = ctx;
5040         return wpas_p2p_in_progress(wpa_s);
5041 }
5042
5043
5044 static int wpas_prov_disc_resp_cb(void *ctx)
5045 {
5046         struct wpa_supplicant *wpa_s = ctx;
5047         struct wpa_ssid *persistent_go;
5048
5049         if (!wpa_s->global->pending_p2ps_group)
5050                 return 0;
5051
5052         wpa_s->global->pending_p2ps_group = 0;
5053
5054         if (wpas_p2p_get_go_group(wpa_s))
5055                 return 0;
5056         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
5057
5058         if (persistent_go) {
5059                 wpas_p2p_group_add_persistent(
5060                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
5061                         persistent_go->mode == WPAS_MODE_P2P_GO ?
5062                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
5063         } else {
5064                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
5065         }
5066
5067         return 1;
5068 }
5069
5070
5071 /**
5072  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
5073  * @global: Pointer to global data from wpa_supplicant_init()
5074  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5075  * Returns: 0 on success, -1 on failure
5076  */
5077 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
5078 {
5079         struct p2p_config p2p;
5080         int i;
5081
5082         if (wpa_s->conf->p2p_disabled)
5083                 return 0;
5084
5085         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
5086                 return 0;
5087
5088         if (global->p2p)
5089                 return 0;
5090
5091         os_memset(&p2p, 0, sizeof(p2p));
5092         p2p.cb_ctx = wpa_s;
5093         p2p.debug_print = wpas_p2p_debug_print;
5094         p2p.p2p_scan = wpas_p2p_scan;
5095         p2p.send_action = wpas_send_action;
5096         p2p.send_action_done = wpas_send_action_done;
5097         p2p.go_neg_completed = wpas_go_neg_completed;
5098         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
5099         p2p.dev_found = wpas_dev_found;
5100         p2p.dev_lost = wpas_dev_lost;
5101         p2p.find_stopped = wpas_find_stopped;
5102         p2p.start_listen = wpas_start_listen;
5103         p2p.stop_listen = wpas_stop_listen;
5104         p2p.send_probe_resp = wpas_send_probe_resp;
5105         p2p.sd_request = wpas_sd_request;
5106         p2p.sd_response = wpas_sd_response;
5107         p2p.prov_disc_req = wpas_prov_disc_req;
5108         p2p.prov_disc_resp = wpas_prov_disc_resp;
5109         p2p.prov_disc_fail = wpas_prov_disc_fail;
5110         p2p.invitation_process = wpas_invitation_process;
5111         p2p.invitation_received = wpas_invitation_received;
5112         p2p.invitation_result = wpas_invitation_result;
5113         p2p.get_noa = wpas_get_noa;
5114         p2p.go_connected = wpas_go_connected;
5115         p2p.presence_resp = wpas_presence_resp;
5116         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
5117         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
5118         p2p.get_persistent_group = wpas_get_persistent_group;
5119         p2p.get_go_info = wpas_get_go_info;
5120         p2p.remove_stale_groups = wpas_remove_stale_groups;
5121         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
5122         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
5123         p2p.p2ps_group_capability = p2ps_group_capability;
5124
5125         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
5126         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
5127         p2p.dev_name = wpa_s->conf->device_name;
5128         p2p.manufacturer = wpa_s->conf->manufacturer;
5129         p2p.model_name = wpa_s->conf->model_name;
5130         p2p.model_number = wpa_s->conf->model_number;
5131         p2p.serial_number = wpa_s->conf->serial_number;
5132         if (wpa_s->wps) {
5133                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
5134                 p2p.config_methods = wpa_s->wps->config_methods;
5135         }
5136
5137         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
5138                 wpa_printf(MSG_ERROR,
5139                            "P2P: Failed to configure supported channel list");
5140                 return -1;
5141         }
5142
5143         if (wpa_s->conf->p2p_listen_reg_class &&
5144             wpa_s->conf->p2p_listen_channel) {
5145                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
5146                 p2p.channel = wpa_s->conf->p2p_listen_channel;
5147                 p2p.channel_forced = 1;
5148         } else {
5149                 /*
5150                  * Pick one of the social channels randomly as the listen
5151                  * channel.
5152                  */
5153                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
5154                                                  &p2p.channel) != 0) {
5155                         wpa_printf(MSG_ERROR,
5156                                    "P2P: Failed to select random social channel as listen channel");
5157                         return -1;
5158                 }
5159                 p2p.channel_forced = 0;
5160         }
5161         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
5162                    p2p.reg_class, p2p.channel);
5163
5164         if (wpa_s->conf->p2p_oper_reg_class &&
5165             wpa_s->conf->p2p_oper_channel) {
5166                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
5167                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
5168                 p2p.cfg_op_channel = 1;
5169                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
5170                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
5171
5172         } else {
5173                 /*
5174                  * Use random operation channel from 2.4 GHz band social
5175                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
5176                  * other preference is indicated.
5177                  */
5178                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
5179                                                  &p2p.op_channel) != 0) {
5180                         wpa_printf(MSG_ERROR,
5181                                    "P2P: Failed to select random social channel as operation channel");
5182                         return -1;
5183                 }
5184                 p2p.cfg_op_channel = 0;
5185                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
5186                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
5187         }
5188
5189         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
5190                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
5191                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
5192         }
5193
5194         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
5195                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
5196                 p2p.country[2] = 0x04;
5197         } else
5198                 os_memcpy(p2p.country, "XX\x04", 3);
5199
5200         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
5201                   WPS_DEV_TYPE_LEN);
5202
5203         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
5204         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
5205                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
5206
5207         p2p.concurrent_operations = !!(wpa_s->drv_flags &
5208                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
5209
5210         p2p.max_peers = 100;
5211
5212         if (wpa_s->conf->p2p_ssid_postfix) {
5213                 p2p.ssid_postfix_len =
5214                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
5215                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
5216                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
5217                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
5218                           p2p.ssid_postfix_len);
5219         }
5220
5221         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
5222
5223         p2p.max_listen = wpa_s->max_remain_on_chan;
5224
5225         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
5226             wpa_s->conf->p2p_passphrase_len <= 63)
5227                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
5228         else
5229                 p2p.passphrase_len = 8;
5230
5231         global->p2p = p2p_init(&p2p);
5232         if (global->p2p == NULL)
5233                 return -1;
5234         global->p2p_init_wpa_s = wpa_s;
5235
5236         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
5237                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
5238                         continue;
5239                 p2p_add_wps_vendor_extension(
5240                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
5241         }
5242
5243         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
5244
5245         return 0;
5246 }
5247
5248
5249 /**
5250  * wpas_p2p_deinit - Deinitialize per-interface P2P data
5251  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5252  *
5253  * This function deinitialize per-interface P2P data.
5254  */
5255 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
5256 {
5257         if (wpa_s->driver && wpa_s->drv_priv)
5258                 wpa_drv_probe_req_report(wpa_s, 0);
5259
5260         if (wpa_s->go_params) {
5261                 /* Clear any stored provisioning info */
5262                 p2p_clear_provisioning_info(
5263                         wpa_s->global->p2p,
5264                         wpa_s->go_params->peer_device_addr);
5265         }
5266
5267         os_free(wpa_s->go_params);
5268         wpa_s->go_params = NULL;
5269         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
5270         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5271         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5272         wpa_s->p2p_long_listen = 0;
5273         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5274         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5275         wpas_p2p_remove_pending_group_interface(wpa_s);
5276         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
5277         wpas_p2p_listen_work_done(wpa_s);
5278         if (wpa_s->p2p_send_action_work) {
5279                 os_free(wpa_s->p2p_send_action_work->ctx);
5280                 radio_work_done(wpa_s->p2p_send_action_work);
5281                 wpa_s->p2p_send_action_work = NULL;
5282         }
5283         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
5284
5285         wpabuf_free(wpa_s->p2p_oob_dev_pw);
5286         wpa_s->p2p_oob_dev_pw = NULL;
5287
5288         os_free(wpa_s->p2p_group_common_freqs);
5289         wpa_s->p2p_group_common_freqs = NULL;
5290         wpa_s->p2p_group_common_freqs_num = 0;
5291
5292         /* TODO: remove group interface from the driver if this wpa_s instance
5293          * is on top of a P2P group interface */
5294 }
5295
5296
5297 /**
5298  * wpas_p2p_deinit_global - Deinitialize global P2P module
5299  * @global: Pointer to global data from wpa_supplicant_init()
5300  *
5301  * This function deinitializes the global (per device) P2P module.
5302  */
5303 static void wpas_p2p_deinit_global(struct wpa_global *global)
5304 {
5305         struct wpa_supplicant *wpa_s, *tmp;
5306
5307         wpa_s = global->ifaces;
5308
5309         wpas_p2p_service_flush(global->p2p_init_wpa_s);
5310
5311         /* Remove remaining P2P group interfaces */
5312         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
5313                 wpa_s = wpa_s->next;
5314         while (wpa_s) {
5315                 tmp = global->ifaces;
5316                 while (tmp &&
5317                        (tmp == wpa_s ||
5318                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
5319                         tmp = tmp->next;
5320                 }
5321                 if (tmp == NULL)
5322                         break;
5323                 /* Disconnect from the P2P group and deinit the interface */
5324                 wpas_p2p_disconnect(tmp);
5325         }
5326
5327         /*
5328          * Deinit GO data on any possibly remaining interface (if main
5329          * interface is used as GO).
5330          */
5331         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5332                 if (wpa_s->ap_iface)
5333                         wpas_p2p_group_deinit(wpa_s);
5334         }
5335
5336         p2p_deinit(global->p2p);
5337         global->p2p = NULL;
5338         global->p2p_init_wpa_s = NULL;
5339 }
5340
5341
5342 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
5343 {
5344         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
5345             wpa_s->conf->p2p_no_group_iface)
5346                 return 0; /* separate interface disabled per configuration */
5347         if (wpa_s->drv_flags &
5348             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
5349              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
5350                 return 1; /* P2P group requires a new interface in every case
5351                            */
5352         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
5353                 return 0; /* driver does not support concurrent operations */
5354         if (wpa_s->global->ifaces->next)
5355                 return 1; /* more that one interface already in use */
5356         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
5357                 return 1; /* this interface is already in use */
5358         return 0;
5359 }
5360
5361
5362 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
5363                                  const u8 *peer_addr,
5364                                  enum p2p_wps_method wps_method,
5365                                  int go_intent, const u8 *own_interface_addr,
5366                                  unsigned int force_freq, int persistent_group,
5367                                  struct wpa_ssid *ssid, unsigned int pref_freq)
5368 {
5369         if (persistent_group && wpa_s->conf->persistent_reconnect)
5370                 persistent_group = 2;
5371
5372         /*
5373          * Increase GO config timeout if HT40 is used since it takes some time
5374          * to scan channels for coex purposes before the BSS can be started.
5375          */
5376         p2p_set_config_timeout(wpa_s->global->p2p,
5377                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
5378
5379         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
5380                            go_intent, own_interface_addr, force_freq,
5381                            persistent_group, ssid ? ssid->ssid : NULL,
5382                            ssid ? ssid->ssid_len : 0,
5383                            wpa_s->p2p_pd_before_go_neg, pref_freq,
5384                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
5385                            0);
5386 }
5387
5388
5389 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
5390                                 const u8 *peer_addr,
5391                                 enum p2p_wps_method wps_method,
5392                                 int go_intent, const u8 *own_interface_addr,
5393                                 unsigned int force_freq, int persistent_group,
5394                                 struct wpa_ssid *ssid, unsigned int pref_freq)
5395 {
5396         if (persistent_group && wpa_s->conf->persistent_reconnect)
5397                 persistent_group = 2;
5398
5399         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
5400                              go_intent, own_interface_addr, force_freq,
5401                              persistent_group, ssid ? ssid->ssid : NULL,
5402                              ssid ? ssid->ssid_len : 0, pref_freq,
5403                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
5404                              0);
5405 }
5406
5407
5408 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
5409 {
5410         wpa_s->p2p_join_scan_count++;
5411         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
5412                    wpa_s->p2p_join_scan_count);
5413         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
5414                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
5415                            " for join operationg - stop join attempt",
5416                            MAC2STR(wpa_s->pending_join_iface_addr));
5417                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5418                 if (wpa_s->p2p_auto_pd) {
5419                         wpa_s->p2p_auto_pd = 0;
5420                         wpa_msg_global(wpa_s, MSG_INFO,
5421                                        P2P_EVENT_PROV_DISC_FAILURE
5422                                        " p2p_dev_addr=" MACSTR " status=N/A",
5423                                        MAC2STR(wpa_s->pending_join_dev_addr));
5424                         return;
5425                 }
5426                 wpa_msg_global(wpa_s->parent, MSG_INFO,
5427                                P2P_EVENT_GROUP_FORMATION_FAILURE);
5428         }
5429 }
5430
5431
5432 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
5433 {
5434         int res;
5435         unsigned int num, i;
5436         struct wpa_used_freq_data *freqs;
5437
5438         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
5439                 /* Multiple channels are supported and not all are in use */
5440                 return 0;
5441         }
5442
5443         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5444                           sizeof(struct wpa_used_freq_data));
5445         if (!freqs)
5446                 return 1;
5447
5448         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5449                                         wpa_s->num_multichan_concurrent);
5450
5451         for (i = 0; i < num; i++) {
5452                 if (freqs[i].freq == freq) {
5453                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
5454                                    freq);
5455                         res = 0;
5456                         goto exit_free;
5457                 }
5458         }
5459
5460         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
5461         res = 1;
5462
5463 exit_free:
5464         os_free(freqs);
5465         return res;
5466 }
5467
5468
5469 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
5470                             const u8 *peer_dev_addr)
5471 {
5472         struct wpa_bss *bss;
5473         int updated;
5474
5475         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
5476         if (bss == NULL)
5477                 return -1;
5478         if (bss->last_update_idx < wpa_s->bss_update_idx) {
5479                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
5480                            "last scan");
5481                 return 0;
5482         }
5483
5484         updated = os_reltime_before(&wpa_s->p2p_auto_started,
5485                                     &bss->last_update);
5486         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
5487                    "%ld.%06ld (%supdated in last scan)",
5488                    bss->last_update.sec, bss->last_update.usec,
5489                    updated ? "": "not ");
5490
5491         return updated;
5492 }
5493
5494
5495 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
5496                                    struct wpa_scan_results *scan_res)
5497 {
5498         struct wpa_bss *bss = NULL;
5499         int freq;
5500         u8 iface_addr[ETH_ALEN];
5501
5502         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5503
5504         if (wpa_s->global->p2p_disabled)
5505                 return;
5506
5507         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
5508                    scan_res ? (int) scan_res->num : -1,
5509                    wpa_s->p2p_auto_join ? "auto_" : "");
5510
5511         if (scan_res)
5512                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
5513
5514         if (wpa_s->p2p_auto_pd) {
5515                 int join = wpas_p2p_peer_go(wpa_s,
5516                                             wpa_s->pending_join_dev_addr);
5517                 if (join == 0 &&
5518                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
5519                         wpa_s->auto_pd_scan_retry++;
5520                         bss = wpa_bss_get_bssid_latest(
5521                                 wpa_s, wpa_s->pending_join_dev_addr);
5522                         if (bss) {
5523                                 freq = bss->freq;
5524                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
5525                                            "the peer " MACSTR " at %d MHz",
5526                                            wpa_s->auto_pd_scan_retry,
5527                                            MAC2STR(wpa_s->
5528                                                    pending_join_dev_addr),
5529                                            freq);
5530                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
5531                                 return;
5532                         }
5533                 }
5534
5535                 if (join < 0)
5536                         join = 0;
5537
5538                 wpa_s->p2p_auto_pd = 0;
5539                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
5540                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
5541                            MAC2STR(wpa_s->pending_join_dev_addr), join);
5542                 if (p2p_prov_disc_req(wpa_s->global->p2p,
5543                                       wpa_s->pending_join_dev_addr, NULL,
5544                                       wpa_s->pending_pd_config_methods, join,
5545                                       0, wpa_s->user_initiated_pd) < 0) {
5546                         wpa_s->p2p_auto_pd = 0;
5547                         wpa_msg_global(wpa_s, MSG_INFO,
5548                                        P2P_EVENT_PROV_DISC_FAILURE
5549                                        " p2p_dev_addr=" MACSTR " status=N/A",
5550                                        MAC2STR(wpa_s->pending_join_dev_addr));
5551                 }
5552                 return;
5553         }
5554
5555         if (wpa_s->p2p_auto_join) {
5556                 int join = wpas_p2p_peer_go(wpa_s,
5557                                             wpa_s->pending_join_dev_addr);
5558                 if (join < 0) {
5559                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
5560                                    "running a GO -> use GO Negotiation");
5561                         wpa_msg_global(wpa_s->parent, MSG_INFO,
5562                                        P2P_EVENT_FALLBACK_TO_GO_NEG
5563                                        "reason=peer-not-running-GO");
5564                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
5565                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
5566                                          wpa_s->p2p_persistent_group, 0, 0, 0,
5567                                          wpa_s->p2p_go_intent,
5568                                          wpa_s->p2p_connect_freq,
5569                                          wpa_s->p2p_persistent_id,
5570                                          wpa_s->p2p_pd_before_go_neg,
5571                                          wpa_s->p2p_go_ht40,
5572                                          wpa_s->p2p_go_vht);
5573                         return;
5574                 }
5575
5576                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
5577                            "try to join the group", join ? "" :
5578                            " in older scan");
5579                 if (!join) {
5580                         wpa_msg_global(wpa_s->parent, MSG_INFO,
5581                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
5582                         wpa_s->p2p_fallback_to_go_neg = 1;
5583                 }
5584         }
5585
5586         freq = p2p_get_oper_freq(wpa_s->global->p2p,
5587                                  wpa_s->pending_join_iface_addr);
5588         if (freq < 0 &&
5589             p2p_get_interface_addr(wpa_s->global->p2p,
5590                                    wpa_s->pending_join_dev_addr,
5591                                    iface_addr) == 0 &&
5592             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
5593             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
5594                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
5595                            "address for join from " MACSTR " to " MACSTR
5596                            " based on newly discovered P2P peer entry",
5597                            MAC2STR(wpa_s->pending_join_iface_addr),
5598                            MAC2STR(iface_addr));
5599                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
5600                           ETH_ALEN);
5601
5602                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
5603                                          wpa_s->pending_join_iface_addr);
5604         }
5605         if (freq >= 0) {
5606                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
5607                            "from P2P peer table: %d MHz", freq);
5608         }
5609         if (wpa_s->p2p_join_ssid_len) {
5610                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
5611                            MACSTR " and SSID %s",
5612                            MAC2STR(wpa_s->pending_join_iface_addr),
5613                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
5614                                         wpa_s->p2p_join_ssid_len));
5615                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5616                                   wpa_s->p2p_join_ssid,
5617                                   wpa_s->p2p_join_ssid_len);
5618         }
5619         if (!bss) {
5620                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
5621                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
5622                 bss = wpa_bss_get_bssid_latest(wpa_s,
5623                                                wpa_s->pending_join_iface_addr);
5624         }
5625         if (bss) {
5626                 freq = bss->freq;
5627                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
5628                            "from BSS table: %d MHz (SSID %s)", freq,
5629                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
5630         }
5631         if (freq > 0) {
5632                 u16 method;
5633
5634                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
5635                         wpa_msg_global(wpa_s->parent, MSG_INFO,
5636                                        P2P_EVENT_GROUP_FORMATION_FAILURE
5637                                        "reason=FREQ_CONFLICT");
5638                         return;
5639                 }
5640
5641                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
5642                            "prior to joining an existing group (GO " MACSTR
5643                            " freq=%u MHz)",
5644                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
5645                 wpa_s->pending_pd_before_join = 1;
5646
5647                 switch (wpa_s->pending_join_wps_method) {
5648                 case WPS_PIN_DISPLAY:
5649                         method = WPS_CONFIG_KEYPAD;
5650                         break;
5651                 case WPS_PIN_KEYPAD:
5652                         method = WPS_CONFIG_DISPLAY;
5653                         break;
5654                 case WPS_PBC:
5655                         method = WPS_CONFIG_PUSHBUTTON;
5656                         break;
5657                 default:
5658                         method = 0;
5659                         break;
5660                 }
5661
5662                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
5663                                                wpa_s->pending_join_dev_addr) ==
5664                      method)) {
5665                         /*
5666                          * We have already performed provision discovery for
5667                          * joining the group. Proceed directly to join
5668                          * operation without duplicated provision discovery. */
5669                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
5670                                    "with " MACSTR " already done - proceed to "
5671                                    "join",
5672                                    MAC2STR(wpa_s->pending_join_dev_addr));
5673                         wpa_s->pending_pd_before_join = 0;
5674                         goto start;
5675                 }
5676
5677                 if (p2p_prov_disc_req(wpa_s->global->p2p,
5678                                       wpa_s->pending_join_dev_addr,
5679                                       NULL, method, 1,
5680                                       freq, wpa_s->user_initiated_pd) < 0) {
5681                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
5682                                    "Discovery Request before joining an "
5683                                    "existing group");
5684                         wpa_s->pending_pd_before_join = 0;
5685                         goto start;
5686                 }
5687                 return;
5688         }
5689
5690         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
5691         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5692         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5693         wpas_p2p_check_join_scan_limit(wpa_s);
5694         return;
5695
5696 start:
5697         /* Start join operation immediately */
5698         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
5699 }
5700
5701
5702 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
5703                                    const u8 *ssid, size_t ssid_len)
5704 {
5705         int ret;
5706         struct wpa_driver_scan_params params;
5707         struct wpabuf *wps_ie, *ies;
5708         size_t ielen;
5709         int freqs[2] = { 0, 0 };
5710
5711         os_memset(&params, 0, sizeof(params));
5712
5713         /* P2P Wildcard SSID */
5714         params.num_ssids = 1;
5715         if (ssid && ssid_len) {
5716                 params.ssids[0].ssid = ssid;
5717                 params.ssids[0].ssid_len = ssid_len;
5718                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
5719                 wpa_s->p2p_join_ssid_len = ssid_len;
5720         } else {
5721                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
5722                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
5723                 wpa_s->p2p_join_ssid_len = 0;
5724         }
5725
5726         wpa_s->wps->dev.p2p = 1;
5727         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
5728                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
5729                                         NULL);
5730         if (wps_ie == NULL) {
5731                 wpas_p2p_scan_res_join(wpa_s, NULL);
5732                 return;
5733         }
5734
5735         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5736         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5737         if (ies == NULL) {
5738                 wpabuf_free(wps_ie);
5739                 wpas_p2p_scan_res_join(wpa_s, NULL);
5740                 return;
5741         }
5742         wpabuf_put_buf(ies, wps_ie);
5743         wpabuf_free(wps_ie);
5744
5745         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5746
5747         params.p2p_probe = 1;
5748         params.extra_ies = wpabuf_head(ies);
5749         params.extra_ies_len = wpabuf_len(ies);
5750
5751         if (!freq) {
5752                 int oper_freq;
5753                 /*
5754                  * If freq is not provided, check the operating freq of the GO
5755                  * and use a single channel scan on if possible.
5756                  */
5757                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5758                                               wpa_s->pending_join_iface_addr);
5759                 if (oper_freq > 0)
5760                         freq = oper_freq;
5761         }
5762         if (freq > 0) {
5763                 freqs[0] = freq;
5764                 params.freqs = freqs;
5765         }
5766
5767         /*
5768          * Run a scan to update BSS table and start Provision Discovery once
5769          * the new scan results become available.
5770          */
5771         ret = wpa_drv_scan(wpa_s, &params);
5772         if (!ret) {
5773                 os_get_reltime(&wpa_s->scan_trigger_time);
5774                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5775                 wpa_s->own_scan_requested = 1;
5776         }
5777
5778         wpabuf_free(ies);
5779
5780         if (ret) {
5781                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5782                            "try again later");
5783                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5784                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5785                 wpas_p2p_check_join_scan_limit(wpa_s);
5786         }
5787 }
5788
5789
5790 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5791 {
5792         struct wpa_supplicant *wpa_s = eloop_ctx;
5793         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5794 }
5795
5796
5797 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5798                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5799                          int auto_join, int op_freq,
5800                          const u8 *ssid, size_t ssid_len)
5801 {
5802         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5803                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5804                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5805                    auto_join ? " (auto_join)" : "");
5806         if (ssid && ssid_len) {
5807                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5808                            wpa_ssid_txt(ssid, ssid_len));
5809         }
5810
5811         wpa_s->p2p_auto_pd = 0;
5812         wpa_s->p2p_auto_join = !!auto_join;
5813         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5814         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5815         wpa_s->pending_join_wps_method = wps_method;
5816
5817         /* Make sure we are not running find during connection establishment */
5818         wpas_p2p_stop_find(wpa_s);
5819
5820         wpa_s->p2p_join_scan_count = 0;
5821         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5822         return 0;
5823 }
5824
5825
5826 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5827                                const u8 *ssid, size_t ssid_len)
5828 {
5829         struct wpa_supplicant *group;
5830         struct p2p_go_neg_results res;
5831         struct wpa_bss *bss;
5832
5833         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5834         if (group == NULL)
5835                 return -1;
5836         if (group != wpa_s) {
5837                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5838                           sizeof(group->p2p_pin));
5839                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5840         } else {
5841                 /*
5842                  * Need to mark the current interface for p2p_group_formation
5843                  * when a separate group interface is not used. This is needed
5844                  * to allow p2p_cancel stop a pending p2p_connect-join.
5845                  * wpas_p2p_init_group_interface() addresses this for the case
5846                  * where a separate group interface is used.
5847                  */
5848                 wpa_s->global->p2p_group_formation = wpa_s;
5849         }
5850
5851         group->p2p_in_provisioning = 1;
5852         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5853
5854         os_memset(&res, 0, sizeof(res));
5855         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5856         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5857                   ETH_ALEN);
5858         res.wps_method = wpa_s->pending_join_wps_method;
5859         if (freq && ssid && ssid_len) {
5860                 res.freq = freq;
5861                 res.ssid_len = ssid_len;
5862                 os_memcpy(res.ssid, ssid, ssid_len);
5863         } else {
5864                 bss = wpa_bss_get_bssid_latest(wpa_s,
5865                                                wpa_s->pending_join_iface_addr);
5866                 if (bss) {
5867                         res.freq = bss->freq;
5868                         res.ssid_len = bss->ssid_len;
5869                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5870                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5871                                    bss->freq,
5872                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5873                 }
5874         }
5875
5876         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5877                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5878                            "starting client");
5879                 wpa_drv_cancel_remain_on_channel(wpa_s);
5880                 wpa_s->off_channel_freq = 0;
5881                 wpa_s->roc_waiting_drv_freq = 0;
5882         }
5883         wpas_start_wps_enrollee(group, &res);
5884
5885         /*
5886          * Allow a longer timeout for join-a-running-group than normal 15
5887          * second group formation timeout since the GO may not have authorized
5888          * our connection yet.
5889          */
5890         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5891         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5892                                wpa_s, NULL);
5893
5894         return 0;
5895 }
5896
5897
5898 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5899                                 int *force_freq, int *pref_freq, int go)
5900 {
5901         struct wpa_used_freq_data *freqs;
5902         int res, best_freq, num_unused;
5903         unsigned int freq_in_use = 0, num, i;
5904
5905         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5906                           sizeof(struct wpa_used_freq_data));
5907         if (!freqs)
5908                 return -1;
5909
5910         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5911                                         wpa_s->num_multichan_concurrent);
5912
5913         /*
5914          * It is possible that the total number of used frequencies is bigger
5915          * than the number of frequencies used for P2P, so get the system wide
5916          * number of unused frequencies.
5917          */
5918         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5919
5920         wpa_printf(MSG_DEBUG,
5921                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5922                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5923
5924         if (freq > 0) {
5925                 int ret;
5926                 if (go)
5927                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5928                 else
5929                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5930                 if (!ret) {
5931                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5932                             ieee80211_is_dfs(freq)) {
5933                                 /*
5934                                  * If freq is a DFS channel and DFS is offloaded
5935                                  * to the driver, allow P2P GO to use it.
5936                                  */
5937                                 wpa_printf(MSG_DEBUG,
5938                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5939                                            freq);
5940                         } else {
5941                                 wpa_printf(MSG_DEBUG,
5942                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5943                                            freq);
5944                                 res = -3;
5945                                 goto exit_free;
5946                         }
5947                 }
5948
5949                 for (i = 0; i < num; i++) {
5950                         if (freqs[i].freq == freq)
5951                                 freq_in_use = 1;
5952                 }
5953
5954                 if (num_unused <= 0 && !freq_in_use) {
5955                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5956                                    freq);
5957                         res = -2;
5958                         goto exit_free;
5959                 }
5960                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5961                            "requested channel (%u MHz)", freq);
5962                 *force_freq = freq;
5963                 goto exit_ok;
5964         }
5965
5966         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5967
5968         /* We have a candidate frequency to use */
5969         if (best_freq > 0) {
5970                 if (*pref_freq == 0 && num_unused > 0) {
5971                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5972                                    best_freq);
5973                         *pref_freq = best_freq;
5974                 } else {
5975                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5976                                    best_freq);
5977                         *force_freq = best_freq;
5978                 }
5979         } else if (num_unused > 0) {
5980                 wpa_printf(MSG_DEBUG,
5981                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5982                 *force_freq = 0;
5983         } else {
5984                 wpa_printf(MSG_DEBUG,
5985                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5986                 res = -2;
5987                 goto exit_free;
5988         }
5989
5990 exit_ok:
5991         res = 0;
5992 exit_free:
5993         os_free(freqs);
5994         return res;
5995 }
5996
5997
5998 /**
5999  * wpas_p2p_connect - Request P2P Group Formation to be started
6000  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6001  * @peer_addr: Address of the peer P2P Device
6002  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
6003  * @persistent_group: Whether to create a persistent group
6004  * @auto_join: Whether to select join vs. GO Negotiation automatically
6005  * @join: Whether to join an existing group (as a client) instead of starting
6006  *      Group Owner negotiation; @peer_addr is BSSID in that case
6007  * @auth: Whether to only authorize the connection instead of doing that and
6008  *      initiating Group Owner negotiation
6009  * @go_intent: GO Intent or -1 to use default
6010  * @freq: Frequency for the group or 0 for auto-selection
6011  * @persistent_id: Persistent group credentials to use for forcing GO
6012  *      parameters or -1 to generate new values (SSID/passphrase)
6013  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
6014  *      interoperability workaround when initiating group formation
6015  * @ht40: Start GO with 40 MHz channel width
6016  * @vht:  Start GO with VHT support
6017  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
6018  *      failure, -2 on failure due to channel not currently available,
6019  *      -3 if forced channel is not supported
6020  */
6021 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6022                      const char *pin, enum p2p_wps_method wps_method,
6023                      int persistent_group, int auto_join, int join, int auth,
6024                      int go_intent, int freq, int persistent_id, int pd,
6025                      int ht40, int vht)
6026 {
6027         int force_freq = 0, pref_freq = 0;
6028         int ret = 0, res;
6029         enum wpa_driver_if_type iftype;
6030         const u8 *if_addr;
6031         struct wpa_ssid *ssid = NULL;
6032
6033         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6034                 return -1;
6035
6036         if (persistent_id >= 0) {
6037                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
6038                 if (ssid == NULL || ssid->disabled != 2 ||
6039                     ssid->mode != WPAS_MODE_P2P_GO)
6040                         return -1;
6041         }
6042
6043         os_free(wpa_s->global->add_psk);
6044         wpa_s->global->add_psk = NULL;
6045
6046         wpa_s->global->p2p_fail_on_wps_complete = 0;
6047         wpa_s->global->pending_p2ps_group = 0;
6048
6049         if (go_intent < 0)
6050                 go_intent = wpa_s->conf->p2p_go_intent;
6051
6052         if (!auth)
6053                 wpa_s->p2p_long_listen = 0;
6054
6055         wpa_s->p2p_wps_method = wps_method;
6056         wpa_s->p2p_persistent_group = !!persistent_group;
6057         wpa_s->p2p_persistent_id = persistent_id;
6058         wpa_s->p2p_go_intent = go_intent;
6059         wpa_s->p2p_connect_freq = freq;
6060         wpa_s->p2p_fallback_to_go_neg = 0;
6061         wpa_s->p2p_pd_before_go_neg = !!pd;
6062         wpa_s->p2p_go_ht40 = !!ht40;
6063         wpa_s->p2p_go_vht = !!vht;
6064
6065         if (pin)
6066                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
6067         else if (wps_method == WPS_PIN_DISPLAY) {
6068                 ret = wps_generate_pin();
6069                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
6070                                   "%08d", ret);
6071                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
6072                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
6073                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
6074                            wpa_s->p2p_pin);
6075         } else
6076                 wpa_s->p2p_pin[0] = '\0';
6077
6078         if (join || auto_join) {
6079                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
6080                 if (auth) {
6081                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
6082                                    "connect a running group from " MACSTR,
6083                                    MAC2STR(peer_addr));
6084                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6085                         return ret;
6086                 }
6087                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
6088                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
6089                                            iface_addr) < 0) {
6090                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
6091                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
6092                                          dev_addr);
6093                 }
6094                 if (auto_join) {
6095                         os_get_reltime(&wpa_s->p2p_auto_started);
6096                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
6097                                    "%ld.%06ld",
6098                                    wpa_s->p2p_auto_started.sec,
6099                                    wpa_s->p2p_auto_started.usec);
6100                 }
6101                 wpa_s->user_initiated_pd = 1;
6102                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
6103                                   auto_join, freq, NULL, 0) < 0)
6104                         return -1;
6105                 return ret;
6106         }
6107
6108         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6109                                    go_intent == 15);
6110         if (res)
6111                 return res;
6112         wpas_p2p_set_own_freq_preference(wpa_s,
6113                                          force_freq ? force_freq : pref_freq);
6114
6115         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
6116
6117         if (wpa_s->create_p2p_iface) {
6118                 /* Prepare to add a new interface for the group */
6119                 iftype = WPA_IF_P2P_GROUP;
6120                 if (go_intent == 15)
6121                         iftype = WPA_IF_P2P_GO;
6122                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
6123                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
6124                                    "interface for the group");
6125                         return -1;
6126                 }
6127
6128                 if_addr = wpa_s->pending_interface_addr;
6129         } else
6130                 if_addr = wpa_s->own_addr;
6131
6132         if (auth) {
6133                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
6134                                          go_intent, if_addr,
6135                                          force_freq, persistent_group, ssid,
6136                                          pref_freq) < 0)
6137                         return -1;
6138                 return ret;
6139         }
6140
6141         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
6142                                   go_intent, if_addr, force_freq,
6143                                   persistent_group, ssid, pref_freq) < 0) {
6144                 if (wpa_s->create_p2p_iface)
6145                         wpas_p2p_remove_pending_group_interface(wpa_s);
6146                 return -1;
6147         }
6148         return ret;
6149 }
6150
6151
6152 /**
6153  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
6154  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6155  * @freq: Frequency of the channel in MHz
6156  * @duration: Duration of the stay on the channel in milliseconds
6157  *
6158  * This callback is called when the driver indicates that it has started the
6159  * requested remain-on-channel duration.
6160  */
6161 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
6162                                    unsigned int freq, unsigned int duration)
6163 {
6164         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6165                 return;
6166         wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
6167                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
6168                    wpa_s->roc_waiting_drv_freq, freq, duration);
6169         if (wpa_s->off_channel_freq &&
6170             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
6171                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
6172                               wpa_s->pending_listen_duration);
6173                 wpa_s->pending_listen_freq = 0;
6174         } else {
6175                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
6176                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
6177                            freq, duration);
6178         }
6179 }
6180
6181
6182 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
6183 {
6184         /* Limit maximum Listen state time based on driver limitation. */
6185         if (timeout > wpa_s->max_remain_on_chan)
6186                 timeout = wpa_s->max_remain_on_chan;
6187
6188         return p2p_listen(wpa_s->global->p2p, timeout);
6189 }
6190
6191
6192 /**
6193  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
6194  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6195  * @freq: Frequency of the channel in MHz
6196  *
6197  * This callback is called when the driver indicates that a remain-on-channel
6198  * operation has been completed, i.e., the duration on the requested channel
6199  * has timed out.
6200  */
6201 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
6202                                           unsigned int freq)
6203 {
6204         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
6205                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
6206                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
6207         wpas_p2p_listen_work_done(wpa_s);
6208         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6209                 return;
6210         if (wpa_s->p2p_long_listen > 0)
6211                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
6212         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
6213                 return; /* P2P module started a new operation */
6214         if (offchannel_pending_action_tx(wpa_s))
6215                 return;
6216         if (wpa_s->p2p_long_listen > 0) {
6217                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
6218                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
6219         } else {
6220                 /*
6221                  * When listen duration is over, stop listen & update p2p_state
6222                  * to IDLE.
6223                  */
6224                 p2p_stop_listen(wpa_s->global->p2p);
6225         }
6226 }
6227
6228
6229 /**
6230  * wpas_p2p_group_remove - Remove a P2P group
6231  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6232  * @ifname: Network interface name of the group interface or "*" to remove all
6233  *      groups
6234  * Returns: 0 on success, -1 on failure
6235  *
6236  * This function is used to remove a P2P group. This can be used to disconnect
6237  * from a group in which the local end is a P2P Client or to end a P2P Group in
6238  * case the local end is the Group Owner. If a virtual network interface was
6239  * created for this group, that interface will be removed. Otherwise, only the
6240  * configured P2P group network will be removed from the interface.
6241  */
6242 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
6243 {
6244         struct wpa_global *global = wpa_s->global;
6245         struct wpa_supplicant *calling_wpa_s = wpa_s;
6246
6247         if (os_strcmp(ifname, "*") == 0) {
6248                 struct wpa_supplicant *prev;
6249                 wpa_s = global->ifaces;
6250                 while (wpa_s) {
6251                         prev = wpa_s;
6252                         wpa_s = wpa_s->next;
6253                         if (prev->p2p_group_interface !=
6254                             NOT_P2P_GROUP_INTERFACE ||
6255                             (prev->current_ssid &&
6256                              prev->current_ssid->p2p_group))
6257                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
6258                 }
6259                 return 0;
6260         }
6261
6262         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6263                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6264                         break;
6265         }
6266
6267         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
6268 }
6269
6270
6271 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
6272 {
6273         unsigned int r;
6274
6275         if (freq == 2) {
6276                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
6277                            "band");
6278                 if (wpa_s->best_24_freq > 0 &&
6279                     p2p_supported_freq_go(wpa_s->global->p2p,
6280                                           wpa_s->best_24_freq)) {
6281                         freq = wpa_s->best_24_freq;
6282                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
6283                                    "channel: %d MHz", freq);
6284                 } else {
6285                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6286                                 return -1;
6287                         freq = 2412 + (r % 3) * 25;
6288                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
6289                                    "channel: %d MHz", freq);
6290                 }
6291         }
6292
6293         if (freq == 5) {
6294                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
6295                            "band");
6296                 if (wpa_s->best_5_freq > 0 &&
6297                     p2p_supported_freq_go(wpa_s->global->p2p,
6298                                        wpa_s->best_5_freq)) {
6299                         freq = wpa_s->best_5_freq;
6300                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
6301                                    "channel: %d MHz", freq);
6302                 } else {
6303                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6304                                 return -1;
6305                         freq = 5180 + (r % 4) * 20;
6306                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
6307                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
6308                                            "5 GHz channel for P2P group");
6309                                 return -1;
6310                         }
6311                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
6312                                    "channel: %d MHz", freq);
6313                 }
6314         }
6315
6316         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
6317                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6318                     ieee80211_is_dfs(freq)) {
6319                         /*
6320                          * If freq is a DFS channel and DFS is offloaded to the
6321                          * driver, allow P2P GO to use it.
6322                          */
6323                         wpa_printf(MSG_DEBUG, "P2P: "
6324                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
6325                                    __func__, freq);
6326                         return freq;
6327                 }
6328                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
6329                            "(%u MHz) is not supported for P2P uses",
6330                            freq);
6331                 return -1;
6332         }
6333
6334         return freq;
6335 }
6336
6337
6338 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
6339                                         struct p2p_go_neg_results *params,
6340                                         const struct p2p_channels *channels)
6341 {
6342         unsigned int i, r;
6343
6344         /* first try some random selection of the social channels */
6345         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6346                 return -1;
6347
6348         for (i = 0; i < 3; i++) {
6349                 params->freq = 2412 + ((r + i) % 3) * 25;
6350                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6351                     freq_included(channels, params->freq) &&
6352                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
6353                         goto out;
6354         }
6355
6356         /* try all channels in reg. class 81 */
6357         for (i = 0; i < 11; i++) {
6358                 params->freq = 2412 + i * 5;
6359                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6360                     freq_included(channels, params->freq) &&
6361                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
6362                         goto out;
6363         }
6364
6365         /* try all channels in operating class 115 */
6366         for (i = 0; i < 4; i++) {
6367                 params->freq = 5180 + i * 20;
6368                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6369                     freq_included(channels, params->freq) &&
6370                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
6371                         goto out;
6372         }
6373
6374         /* try all channels in operating class 124 */
6375         for (i = 0; i < 4; i++) {
6376                 params->freq = 5745 + i * 20;
6377                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6378                     freq_included(channels, params->freq) &&
6379                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
6380                         goto out;
6381         }
6382
6383         /* try social channel class 180 channel 2 */
6384         params->freq = 58320 + 1 * 2160;
6385         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6386             freq_included(channels, params->freq) &&
6387             p2p_supported_freq(wpa_s->global->p2p, params->freq))
6388                 goto out;
6389
6390         /* try all channels in reg. class 180 */
6391         for (i = 0; i < 4; i++) {
6392                 params->freq = 58320 + i * 2160;
6393                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
6394                     freq_included(channels, params->freq) &&
6395                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
6396                         goto out;
6397         }
6398
6399         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
6400         return -1;
6401 out:
6402         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
6403                    params->freq);
6404         return 0;
6405 }
6406
6407
6408 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
6409                                    struct p2p_go_neg_results *params,
6410                                    int freq, int ht40, int vht,
6411                                    const struct p2p_channels *channels)
6412 {
6413         struct wpa_used_freq_data *freqs;
6414         unsigned int pref_freq, cand_freq;
6415         unsigned int num, i;
6416
6417         os_memset(params, 0, sizeof(*params));
6418         params->role_go = 1;
6419         params->ht40 = ht40;
6420         params->vht = vht;
6421         if (freq) {
6422                 if (!freq_included(channels, freq)) {
6423                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
6424                                    "accepted", freq);
6425                         return -1;
6426                 }
6427                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
6428                            "frequency %d MHz", freq);
6429                 params->freq = freq;
6430         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
6431                    wpa_s->conf->p2p_oper_channel >= 1 &&
6432                    wpa_s->conf->p2p_oper_channel <= 11 &&
6433                    freq_included(channels,
6434                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
6435                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
6436                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6437                            "frequency %d MHz", params->freq);
6438         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
6439                     wpa_s->conf->p2p_oper_reg_class == 116 ||
6440                     wpa_s->conf->p2p_oper_reg_class == 117 ||
6441                     wpa_s->conf->p2p_oper_reg_class == 124 ||
6442                     wpa_s->conf->p2p_oper_reg_class == 126 ||
6443                     wpa_s->conf->p2p_oper_reg_class == 127) &&
6444                    freq_included(channels,
6445                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
6446                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
6447                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6448                            "frequency %d MHz", params->freq);
6449         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
6450                    wpa_s->best_overall_freq > 0 &&
6451                    p2p_supported_freq_go(wpa_s->global->p2p,
6452                                          wpa_s->best_overall_freq) &&
6453                    freq_included(channels, wpa_s->best_overall_freq)) {
6454                 params->freq = wpa_s->best_overall_freq;
6455                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
6456                            "channel %d MHz", params->freq);
6457         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
6458                    wpa_s->best_24_freq > 0 &&
6459                    p2p_supported_freq_go(wpa_s->global->p2p,
6460                                          wpa_s->best_24_freq) &&
6461                    freq_included(channels, wpa_s->best_24_freq)) {
6462                 params->freq = wpa_s->best_24_freq;
6463                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
6464                            "channel %d MHz", params->freq);
6465         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
6466                    wpa_s->best_5_freq > 0 &&
6467                    p2p_supported_freq_go(wpa_s->global->p2p,
6468                                          wpa_s->best_5_freq) &&
6469                    freq_included(channels, wpa_s->best_5_freq)) {
6470                 params->freq = wpa_s->best_5_freq;
6471                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
6472                            "channel %d MHz", params->freq);
6473         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
6474                                                   channels))) {
6475                 params->freq = pref_freq;
6476                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6477                            "channels", params->freq);
6478         } else {
6479                 /* no preference, select some channel */
6480                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
6481                         return -1;
6482         }
6483
6484         freqs = os_calloc(wpa_s->num_multichan_concurrent,
6485                           sizeof(struct wpa_used_freq_data));
6486         if (!freqs)
6487                 return -1;
6488
6489         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
6490                                         wpa_s->num_multichan_concurrent);
6491
6492         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
6493
6494         /* First try the best used frequency if possible */
6495         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
6496                 params->freq = cand_freq;
6497         } else if (!freq) {
6498                 /* Try any of the used frequencies */
6499                 for (i = 0; i < num; i++) {
6500                         if (freq_included(channels, freqs[i].freq)) {
6501                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
6502                                            freqs[i].freq);
6503                                 params->freq = freqs[i].freq;
6504                                 break;
6505                         }
6506                 }
6507
6508                 if (i == num) {
6509                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
6510                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
6511                                 os_free(freqs);
6512                                 return -1;
6513                         } else {
6514                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
6515                         }
6516                 }
6517         } else {
6518                 for (i = 0; i < num; i++) {
6519                         if (freqs[i].freq == freq)
6520                                 break;
6521                 }
6522
6523                 if (i == num) {
6524                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
6525                                 if (freq)
6526                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
6527                                 os_free(freqs);
6528                                 return -1;
6529                         } else {
6530                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
6531                         }
6532                 }
6533         }
6534
6535         os_free(freqs);
6536         return 0;
6537 }
6538
6539
6540 static struct wpa_supplicant *
6541 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6542                          int go)
6543 {
6544         struct wpa_supplicant *group_wpa_s;
6545
6546         if (!wpas_p2p_create_iface(wpa_s)) {
6547                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
6548                         "operations");
6549                 wpa_s->p2p_first_connection_timeout = 0;
6550                 return wpa_s;
6551         }
6552
6553         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6554                                          WPA_IF_P2P_CLIENT) < 0) {
6555                 wpa_msg_global(wpa_s, MSG_ERROR,
6556                                "P2P: Failed to add group interface");
6557                 return NULL;
6558         }
6559         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6560         if (group_wpa_s == NULL) {
6561                 wpa_msg_global(wpa_s, MSG_ERROR,
6562                                "P2P: Failed to initialize group interface");
6563                 wpas_p2p_remove_pending_group_interface(wpa_s);
6564                 return NULL;
6565         }
6566
6567         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6568                 group_wpa_s->ifname);
6569         group_wpa_s->p2p_first_connection_timeout = 0;
6570         return group_wpa_s;
6571 }
6572
6573
6574 /**
6575  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6576  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6577  * @persistent_group: Whether to create a persistent group
6578  * @freq: Frequency for the group or 0 to indicate no hardcoding
6579  * @ht40: Start GO with 40 MHz channel width
6580  * @vht:  Start GO with VHT support
6581  * Returns: 0 on success, -1 on failure
6582  *
6583  * This function creates a new P2P group with the local end as the Group Owner,
6584  * i.e., without using Group Owner Negotiation.
6585  */
6586 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6587                        int freq, int ht40, int vht)
6588 {
6589         struct p2p_go_neg_results params;
6590
6591         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6592                 return -1;
6593
6594         os_free(wpa_s->global->add_psk);
6595         wpa_s->global->add_psk = NULL;
6596
6597         /* Make sure we are not running find during connection establishment */
6598         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6599         wpas_p2p_stop_find_oper(wpa_s);
6600
6601         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6602         if (freq < 0)
6603                 return -1;
6604
6605         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
6606                 return -1;
6607         if (params.freq &&
6608             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6609                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6610                     ieee80211_is_dfs(params.freq)) {
6611                         /*
6612                          * If freq is a DFS channel and DFS is offloaded to the
6613                          * driver, allow P2P GO to use it.
6614                          */
6615                         wpa_printf(MSG_DEBUG,
6616                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6617                                 __func__, params.freq);
6618                 } else {
6619                         wpa_printf(MSG_DEBUG,
6620                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6621                                    params.freq);
6622                         return -1;
6623                 }
6624         }
6625         p2p_go_params(wpa_s->global->p2p, &params);
6626         params.persistent_group = persistent_group;
6627
6628         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6629         if (wpa_s == NULL)
6630                 return -1;
6631         wpas_start_wps_go(wpa_s, &params, 0);
6632
6633         return 0;
6634 }
6635
6636
6637 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6638                                  struct wpa_ssid *params, int addr_allocated,
6639                                  int freq)
6640 {
6641         struct wpa_ssid *ssid;
6642
6643         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6644         if (wpa_s == NULL)
6645                 return -1;
6646         wpa_s->p2p_last_4way_hs_fail = NULL;
6647
6648         wpa_supplicant_ap_deinit(wpa_s);
6649
6650         ssid = wpa_config_add_network(wpa_s->conf);
6651         if (ssid == NULL)
6652                 return -1;
6653         wpa_config_set_network_defaults(ssid);
6654         ssid->temporary = 1;
6655         ssid->proto = WPA_PROTO_RSN;
6656         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6657         ssid->group_cipher = WPA_CIPHER_CCMP;
6658         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6659         ssid->ssid = os_malloc(params->ssid_len);
6660         if (ssid->ssid == NULL) {
6661                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6662                 return -1;
6663         }
6664         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6665         ssid->ssid_len = params->ssid_len;
6666         ssid->p2p_group = 1;
6667         ssid->export_keys = 1;
6668         if (params->psk_set) {
6669                 os_memcpy(ssid->psk, params->psk, 32);
6670                 ssid->psk_set = 1;
6671         }
6672         if (params->passphrase)
6673                 ssid->passphrase = os_strdup(params->passphrase);
6674
6675         wpa_s->show_group_started = 1;
6676         wpa_s->p2p_in_invitation = 1;
6677         wpa_s->p2p_invite_go_freq = freq;
6678
6679         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6680                              NULL);
6681         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6682                                wpas_p2p_group_formation_timeout,
6683                                wpa_s->parent, NULL);
6684         wpa_supplicant_select_network(wpa_s, ssid);
6685
6686         return 0;
6687 }
6688
6689
6690 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6691                                   struct wpa_ssid *ssid, int addr_allocated,
6692                                   int force_freq, int neg_freq, int ht40,
6693                                   int vht, const struct p2p_channels *channels,
6694                                   int connection_timeout)
6695 {
6696         struct p2p_go_neg_results params;
6697         int go = 0, freq;
6698
6699         if (ssid->disabled != 2 || ssid->ssid == NULL)
6700                 return -1;
6701
6702         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6703             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6704                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6705                            "already running");
6706                 return 0;
6707         }
6708
6709         os_free(wpa_s->global->add_psk);
6710         wpa_s->global->add_psk = NULL;
6711
6712         /* Make sure we are not running find during connection establishment */
6713         wpas_p2p_stop_find_oper(wpa_s);
6714
6715         wpa_s->p2p_fallback_to_go_neg = 0;
6716
6717         if (ssid->mode == WPAS_MODE_P2P_GO) {
6718                 if (force_freq > 0) {
6719                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6720                         if (freq < 0)
6721                                 return -1;
6722                 } else {
6723                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6724                         if (freq < 0 ||
6725                             (freq > 0 && !freq_included(channels, freq)))
6726                                 freq = 0;
6727                 }
6728         } else {
6729                 freq = neg_freq;
6730                 if (freq < 0 ||
6731                     (freq > 0 && !freq_included(channels, freq)))
6732                         freq = 0;
6733         }
6734
6735         if (ssid->mode == WPAS_MODE_INFRA)
6736                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
6737
6738         if (ssid->mode != WPAS_MODE_P2P_GO)
6739                 return -1;
6740
6741         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
6742                 return -1;
6743
6744         params.role_go = 1;
6745         params.psk_set = ssid->psk_set;
6746         if (params.psk_set)
6747                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6748         if (ssid->passphrase) {
6749                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6750                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6751                                    "persistent group");
6752                         return -1;
6753                 }
6754                 os_strlcpy(params.passphrase, ssid->passphrase,
6755                            sizeof(params.passphrase));
6756         }
6757         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6758         params.ssid_len = ssid->ssid_len;
6759         params.persistent_group = 1;
6760
6761         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6762         if (wpa_s == NULL)
6763                 return -1;
6764
6765         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6766
6767         wpa_s->p2p_first_connection_timeout = connection_timeout;
6768         wpas_start_wps_go(wpa_s, &params, 0);
6769
6770         return 0;
6771 }
6772
6773
6774 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6775                                struct wpabuf *proberesp_ies)
6776 {
6777         struct wpa_supplicant *wpa_s = ctx;
6778         if (wpa_s->ap_iface) {
6779                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6780                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6781                         wpabuf_free(beacon_ies);
6782                         wpabuf_free(proberesp_ies);
6783                         return;
6784                 }
6785                 if (beacon_ies) {
6786                         wpabuf_free(hapd->p2p_beacon_ie);
6787                         hapd->p2p_beacon_ie = beacon_ies;
6788                 }
6789                 wpabuf_free(hapd->p2p_probe_resp_ie);
6790                 hapd->p2p_probe_resp_ie = proberesp_ies;
6791         } else {
6792                 wpabuf_free(beacon_ies);
6793                 wpabuf_free(proberesp_ies);
6794         }
6795         wpa_supplicant_ap_update_beacon(wpa_s);
6796 }
6797
6798
6799 static void wpas_p2p_idle_update(void *ctx, int idle)
6800 {
6801         struct wpa_supplicant *wpa_s = ctx;
6802         if (!wpa_s->ap_iface)
6803                 return;
6804         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6805         if (idle) {
6806                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6807                     wpa_s->p2p_in_provisioning) {
6808                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6809                         return;
6810                 }
6811                 wpas_p2p_set_group_idle_timeout(wpa_s);
6812         } else
6813                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6814 }
6815
6816
6817 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6818                                        struct wpa_ssid *ssid)
6819 {
6820         struct p2p_group *group;
6821         struct p2p_group_config *cfg;
6822
6823         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6824                 return NULL;
6825
6826         cfg = os_zalloc(sizeof(*cfg));
6827         if (cfg == NULL)
6828                 return NULL;
6829
6830         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6831                 cfg->persistent_group = 2;
6832         else if (ssid->p2p_persistent_group)
6833                 cfg->persistent_group = 1;
6834         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6835         if (wpa_s->max_stations &&
6836             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6837                 cfg->max_clients = wpa_s->max_stations;
6838         else
6839                 cfg->max_clients = wpa_s->conf->max_num_sta;
6840         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6841         cfg->ssid_len = ssid->ssid_len;
6842         cfg->freq = ssid->frequency;
6843         cfg->cb_ctx = wpa_s;
6844         cfg->ie_update = wpas_p2p_ie_update;
6845         cfg->idle_update = wpas_p2p_idle_update;
6846
6847         group = p2p_group_init(wpa_s->global->p2p, cfg);
6848         if (group == NULL)
6849                 os_free(cfg);
6850         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6851                 p2p_group_notif_formation_done(group);
6852         wpa_s->p2p_group = group;
6853         return group;
6854 }
6855
6856
6857 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6858                           int registrar)
6859 {
6860         struct wpa_ssid *ssid = wpa_s->current_ssid;
6861
6862         if (!wpa_s->p2p_in_provisioning) {
6863                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6864                            "provisioning not in progress");
6865                 return;
6866         }
6867
6868         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6869                 u8 go_dev_addr[ETH_ALEN];
6870                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6871                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6872                                           ssid->ssid_len);
6873                 /* Clear any stored provisioning info */
6874                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6875         }
6876
6877         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6878                              NULL);
6879         wpa_s->p2p_go_group_formation_completed = 1;
6880         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6881                 /*
6882                  * Use a separate timeout for initial data connection to
6883                  * complete to allow the group to be removed automatically if
6884                  * something goes wrong in this step before the P2P group idle
6885                  * timeout mechanism is taken into use.
6886                  */
6887                 wpa_dbg(wpa_s, MSG_DEBUG,
6888                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6889                         P2P_MAX_INITIAL_CONN_WAIT);
6890                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6891                                        wpas_p2p_group_formation_timeout,
6892                                        wpa_s->parent, NULL);
6893         } else if (ssid) {
6894                 /*
6895                  * Use a separate timeout for initial data connection to
6896                  * complete to allow the group to be removed automatically if
6897                  * the client does not complete data connection successfully.
6898                  */
6899                 wpa_dbg(wpa_s, MSG_DEBUG,
6900                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6901                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6902                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6903                                        wpas_p2p_group_formation_timeout,
6904                                        wpa_s->parent, NULL);
6905                 /*
6906                  * Complete group formation on first successful data connection
6907                  */
6908                 wpa_s->p2p_go_group_formation_completed = 0;
6909         }
6910         if (wpa_s->global->p2p)
6911                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6912         wpas_group_formation_completed(wpa_s, 1);
6913 }
6914
6915
6916 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6917                          struct wps_event_fail *fail)
6918 {
6919         if (!wpa_s->p2p_in_provisioning) {
6920                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6921                            "provisioning not in progress");
6922                 return;
6923         }
6924
6925         if (wpa_s->go_params) {
6926                 p2p_clear_provisioning_info(
6927                         wpa_s->global->p2p,
6928                         wpa_s->go_params->peer_device_addr);
6929         }
6930
6931         wpas_notify_p2p_wps_failed(wpa_s, fail);
6932
6933         if (wpa_s == wpa_s->global->p2p_group_formation) {
6934                 /*
6935                  * Allow some time for the failed WPS negotiation exchange to
6936                  * complete, but remove the group since group formation cannot
6937                  * succeed after provisioning failure.
6938                  */
6939                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6940                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6941                 eloop_deplete_timeout(0, 50000,
6942                                       wpas_p2p_group_formation_timeout,
6943                                       wpa_s->parent, NULL);
6944         }
6945 }
6946
6947
6948 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6949 {
6950         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6951             !wpa_s->p2p_in_provisioning)
6952                 return 0;
6953
6954         wpas_p2p_grpform_fail_after_wps(wpa_s);
6955
6956         return 1;
6957 }
6958
6959
6960 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6961                        const char *config_method,
6962                        enum wpas_p2p_prov_disc_use use,
6963                        struct p2ps_provision *p2ps_prov)
6964 {
6965         u16 config_methods;
6966
6967         wpa_s->global->pending_p2ps_group = 0;
6968         wpa_s->p2p_fallback_to_go_neg = 0;
6969         wpa_s->pending_pd_use = NORMAL_PD;
6970         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6971                 p2ps_prov->conncap = p2ps_group_capability(
6972                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
6973                 wpa_printf(MSG_DEBUG,
6974                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6975                            __func__, p2ps_prov->conncap,
6976                            p2ps_prov->adv_id, p2ps_prov->conncap,
6977                            p2ps_prov->status, p2ps_prov->info);
6978
6979                 config_methods = 0;
6980         } else if (os_strncmp(config_method, "display", 7) == 0)
6981                 config_methods = WPS_CONFIG_DISPLAY;
6982         else if (os_strncmp(config_method, "keypad", 6) == 0)
6983                 config_methods = WPS_CONFIG_KEYPAD;
6984         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6985                  os_strncmp(config_method, "pushbutton", 10) == 0)
6986                 config_methods = WPS_CONFIG_PUSHBUTTON;
6987         else {
6988                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6989                 os_free(p2ps_prov);
6990                 return -1;
6991         }
6992
6993         if (use == WPAS_P2P_PD_AUTO) {
6994                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6995                 wpa_s->pending_pd_config_methods = config_methods;
6996                 wpa_s->p2p_auto_pd = 1;
6997                 wpa_s->p2p_auto_join = 0;
6998                 wpa_s->pending_pd_before_join = 0;
6999                 wpa_s->auto_pd_scan_retry = 0;
7000                 wpas_p2p_stop_find(wpa_s);
7001                 wpa_s->p2p_join_scan_count = 0;
7002                 os_get_reltime(&wpa_s->p2p_auto_started);
7003                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
7004                            wpa_s->p2p_auto_started.sec,
7005                            wpa_s->p2p_auto_started.usec);
7006                 wpas_p2p_join_scan(wpa_s, NULL);
7007                 return 0;
7008         }
7009
7010         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
7011                 os_free(p2ps_prov);
7012                 return -1;
7013         }
7014
7015         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
7016                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
7017                                  0, 1);
7018 }
7019
7020
7021 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
7022                               char *end)
7023 {
7024         return p2p_scan_result_text(ies, ies_len, buf, end);
7025 }
7026
7027
7028 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
7029 {
7030         if (!offchannel_pending_action_tx(wpa_s))
7031                 return;
7032
7033         wpas_p2p_action_tx_clear(wpa_s);
7034
7035         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
7036                    "operation request");
7037         offchannel_clear_pending_action_tx(wpa_s);
7038 }
7039
7040
7041 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
7042                   enum p2p_discovery_type type,
7043                   unsigned int num_req_dev_types, const u8 *req_dev_types,
7044                   const u8 *dev_id, unsigned int search_delay,
7045                   u8 seek_cnt, const char **seek_string, int freq)
7046 {
7047         wpas_p2p_clear_pending_action_tx(wpa_s);
7048         wpa_s->p2p_long_listen = 0;
7049
7050         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
7051             wpa_s->p2p_in_provisioning)
7052                 return -1;
7053
7054         wpa_supplicant_cancel_sched_scan(wpa_s);
7055
7056         return p2p_find(wpa_s->global->p2p, timeout, type,
7057                         num_req_dev_types, req_dev_types, dev_id,
7058                         search_delay, seek_cnt, seek_string, freq);
7059 }
7060
7061
7062 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
7063                                             struct wpa_scan_results *scan_res)
7064 {
7065         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7066
7067         if (wpa_s->p2p_scan_work) {
7068                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
7069                 wpa_s->p2p_scan_work = NULL;
7070                 radio_work_done(work);
7071         }
7072
7073         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7074                 return;
7075
7076         /*
7077          * Indicate that results have been processed so that the P2P module can
7078          * continue pending tasks.
7079          */
7080         p2p_scan_res_handled(wpa_s->global->p2p);
7081 }
7082
7083
7084 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
7085 {
7086         wpas_p2p_clear_pending_action_tx(wpa_s);
7087         wpa_s->p2p_long_listen = 0;
7088         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
7089         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
7090
7091         if (wpa_s->global->p2p)
7092                 p2p_stop_find(wpa_s->global->p2p);
7093
7094         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
7095                 wpa_printf(MSG_DEBUG,
7096                            "P2P: Do not consider the scan results after stop_find");
7097                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
7098         }
7099 }
7100
7101
7102 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
7103 {
7104         wpas_p2p_stop_find_oper(wpa_s);
7105         if (!wpa_s->global->pending_group_iface_for_p2ps)
7106                 wpas_p2p_remove_pending_group_interface(wpa_s);
7107 }
7108
7109
7110 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
7111 {
7112         struct wpa_supplicant *wpa_s = eloop_ctx;
7113         wpa_s->p2p_long_listen = 0;
7114 }
7115
7116
7117 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
7118 {
7119         int res;
7120
7121         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7122                 return -1;
7123
7124         wpa_supplicant_cancel_sched_scan(wpa_s);
7125         wpas_p2p_clear_pending_action_tx(wpa_s);
7126
7127         if (timeout == 0) {
7128                 /*
7129                  * This is a request for unlimited Listen state. However, at
7130                  * least for now, this is mapped to a Listen state for one
7131                  * hour.
7132                  */
7133                 timeout = 3600;
7134         }
7135         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
7136         wpa_s->p2p_long_listen = 0;
7137
7138         /*
7139          * Stop previous find/listen operation to avoid trying to request a new
7140          * remain-on-channel operation while the driver is still running the
7141          * previous one.
7142          */
7143         if (wpa_s->global->p2p)
7144                 p2p_stop_find(wpa_s->global->p2p);
7145
7146         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
7147         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
7148                 wpa_s->p2p_long_listen = timeout * 1000;
7149                 eloop_register_timeout(timeout, 0,
7150                                        wpas_p2p_long_listen_timeout,
7151                                        wpa_s, NULL);
7152         }
7153
7154         return res;
7155 }
7156
7157
7158 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
7159                           u8 *buf, size_t len, int p2p_group)
7160 {
7161         struct wpabuf *p2p_ie;
7162         int ret;
7163
7164         if (wpa_s->global->p2p_disabled)
7165                 return -1;
7166         if (wpa_s->conf->p2p_disabled)
7167                 return -1;
7168         if (wpa_s->global->p2p == NULL)
7169                 return -1;
7170         if (bss == NULL)
7171                 return -1;
7172
7173         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
7174         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
7175                                p2p_group, p2p_ie);
7176         wpabuf_free(p2p_ie);
7177
7178         return ret;
7179 }
7180
7181
7182 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
7183                           const u8 *dst, const u8 *bssid,
7184                           const u8 *ie, size_t ie_len, int ssi_signal)
7185 {
7186         if (wpa_s->global->p2p_disabled)
7187                 return 0;
7188         if (wpa_s->global->p2p == NULL)
7189                 return 0;
7190
7191         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
7192                                  ie, ie_len)) {
7193         case P2P_PREQ_NOT_P2P:
7194                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
7195                                  ssi_signal);
7196                 /* fall through */
7197         case P2P_PREQ_MALFORMED:
7198         case P2P_PREQ_NOT_LISTEN:
7199         case P2P_PREQ_NOT_PROCESSED:
7200         default: /* make gcc happy */
7201                 return 0;
7202         case P2P_PREQ_PROCESSED:
7203                 return 1;
7204         }
7205 }
7206
7207
7208 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
7209                         const u8 *sa, const u8 *bssid,
7210                         u8 category, const u8 *data, size_t len, int freq)
7211 {
7212         if (wpa_s->global->p2p_disabled)
7213                 return;
7214         if (wpa_s->global->p2p == NULL)
7215                 return;
7216
7217         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
7218                       freq);
7219 }
7220
7221
7222 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
7223 {
7224         if (wpa_s->global->p2p_disabled)
7225                 return;
7226         if (wpa_s->global->p2p == NULL)
7227                 return;
7228
7229         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
7230 }
7231
7232
7233 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
7234 {
7235         p2p_group_deinit(wpa_s->p2p_group);
7236         wpa_s->p2p_group = NULL;
7237
7238         wpa_s->ap_configured_cb = NULL;
7239         wpa_s->ap_configured_cb_ctx = NULL;
7240         wpa_s->ap_configured_cb_data = NULL;
7241         wpa_s->connect_without_scan = NULL;
7242 }
7243
7244
7245 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
7246 {
7247         wpa_s->p2p_long_listen = 0;
7248
7249         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7250                 return -1;
7251
7252         return p2p_reject(wpa_s->global->p2p, addr);
7253 }
7254
7255
7256 /* Invite to reinvoke a persistent group */
7257 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
7258                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
7259                     int ht40, int vht, int pref_freq)
7260 {
7261         enum p2p_invite_role role;
7262         u8 *bssid = NULL;
7263         int force_freq = 0;
7264         int res;
7265         int no_pref_freq_given = pref_freq == 0;
7266
7267         wpa_s->global->p2p_invite_group = NULL;
7268         if (peer_addr)
7269                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
7270         else
7271                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
7272
7273         wpa_s->p2p_persistent_go_freq = freq;
7274         wpa_s->p2p_go_ht40 = !!ht40;
7275         if (ssid->mode == WPAS_MODE_P2P_GO) {
7276                 role = P2P_INVITE_ROLE_GO;
7277                 if (peer_addr == NULL) {
7278                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
7279                                    "address in invitation command");
7280                         return -1;
7281                 }
7282                 if (wpas_p2p_create_iface(wpa_s)) {
7283                         if (wpas_p2p_add_group_interface(wpa_s,
7284                                                          WPA_IF_P2P_GO) < 0) {
7285                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
7286                                            "allocate a new interface for the "
7287                                            "group");
7288                                 return -1;
7289                         }
7290                         bssid = wpa_s->pending_interface_addr;
7291                 } else
7292                         bssid = wpa_s->own_addr;
7293         } else {
7294                 role = P2P_INVITE_ROLE_CLIENT;
7295                 peer_addr = ssid->bssid;
7296         }
7297         wpa_s->pending_invite_ssid_id = ssid->id;
7298
7299         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7300                                    role == P2P_INVITE_ROLE_GO);
7301         if (res)
7302                 return res;
7303
7304         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7305                 return -1;
7306
7307         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
7308             no_pref_freq_given && pref_freq > 0 &&
7309             wpa_s->num_multichan_concurrent > 1 &&
7310             wpas_p2p_num_unused_channels(wpa_s) > 0) {
7311                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
7312                            pref_freq);
7313                 pref_freq = 0;
7314         }
7315
7316         /*
7317          * Stop any find/listen operations before invitation and possibly
7318          * connection establishment.
7319          */
7320         wpas_p2p_stop_find_oper(wpa_s);
7321
7322         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7323                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
7324                           1, pref_freq, -1);
7325 }
7326
7327
7328 /* Invite to join an active group */
7329 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
7330                           const u8 *peer_addr, const u8 *go_dev_addr)
7331 {
7332         struct wpa_global *global = wpa_s->global;
7333         enum p2p_invite_role role;
7334         u8 *bssid = NULL;
7335         struct wpa_ssid *ssid;
7336         int persistent;
7337         int freq = 0, force_freq = 0, pref_freq = 0;
7338         int res;
7339
7340         wpa_s->p2p_persistent_go_freq = 0;
7341         wpa_s->p2p_go_ht40 = 0;
7342         wpa_s->p2p_go_vht = 0;
7343
7344         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7345                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
7346                         break;
7347         }
7348         if (wpa_s == NULL) {
7349                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
7350                 return -1;
7351         }
7352
7353         ssid = wpa_s->current_ssid;
7354         if (ssid == NULL) {
7355                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
7356                            "invitation");
7357                 return -1;
7358         }
7359
7360         wpa_s->global->p2p_invite_group = wpa_s;
7361         persistent = ssid->p2p_persistent_group &&
7362                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
7363                                         ssid->ssid, ssid->ssid_len);
7364
7365         if (ssid->mode == WPAS_MODE_P2P_GO) {
7366                 role = P2P_INVITE_ROLE_ACTIVE_GO;
7367                 bssid = wpa_s->own_addr;
7368                 if (go_dev_addr == NULL)
7369                         go_dev_addr = wpa_s->global->p2p_dev_addr;
7370                 freq = ssid->frequency;
7371         } else {
7372                 role = P2P_INVITE_ROLE_CLIENT;
7373                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
7374                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
7375                                    "invite to current group");
7376                         return -1;
7377                 }
7378                 bssid = wpa_s->bssid;
7379                 if (go_dev_addr == NULL &&
7380                     !is_zero_ether_addr(wpa_s->go_dev_addr))
7381                         go_dev_addr = wpa_s->go_dev_addr;
7382                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7383                         (int) wpa_s->assoc_freq;
7384         }
7385         wpa_s->parent->pending_invite_ssid_id = -1;
7386
7387         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7388                 return -1;
7389
7390         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7391                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
7392         if (res)
7393                 return res;
7394         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
7395
7396         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7397                           ssid->ssid, ssid->ssid_len, force_freq,
7398                           go_dev_addr, persistent, pref_freq, -1);
7399 }
7400
7401
7402 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
7403 {
7404         struct wpa_ssid *ssid = wpa_s->current_ssid;
7405         u8 go_dev_addr[ETH_ALEN];
7406         int network_id = -1;
7407         int persistent;
7408         int freq;
7409         u8 ip[3 * 4];
7410         char ip_addr[100];
7411
7412         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
7413                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7414                                      wpa_s->parent, NULL);
7415         }
7416
7417         if (!wpa_s->show_group_started || !ssid)
7418                 return;
7419
7420         wpa_s->show_group_started = 0;
7421
7422         os_memset(go_dev_addr, 0, ETH_ALEN);
7423         if (ssid->bssid_set)
7424                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7425         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7426                                                ssid->ssid_len);
7427         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7428
7429         if (wpa_s->global->p2p_group_formation == wpa_s)
7430                 wpa_s->global->p2p_group_formation = NULL;
7431
7432         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7433                 (int) wpa_s->assoc_freq;
7434
7435         ip_addr[0] = '\0';
7436         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7437                 int res;
7438
7439                 res = os_snprintf(ip_addr, sizeof(ip_addr),
7440                                   " ip_addr=%u.%u.%u.%u "
7441                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7442                                   ip[0], ip[1], ip[2], ip[3],
7443                                   ip[4], ip[5], ip[6], ip[7],
7444                                   ip[8], ip[9], ip[10], ip[11]);
7445                 if (os_snprintf_error(sizeof(ip_addr), res))
7446                         ip_addr[0] = '\0';
7447         }
7448
7449         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7450                                ssid->passphrase == NULL && ssid->psk_set ?
7451                                ssid->psk : NULL,
7452                                ssid->passphrase, go_dev_addr, persistent,
7453                                ip_addr);
7454
7455         if (persistent)
7456                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
7457                                                              ssid, go_dev_addr);
7458         if (network_id < 0)
7459                 network_id = ssid->id;
7460         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
7461 }
7462
7463
7464 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7465                           u32 interval1, u32 duration2, u32 interval2)
7466 {
7467         int ret;
7468
7469         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7470                 return -1;
7471
7472         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7473             wpa_s->current_ssid == NULL ||
7474             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7475                 return -1;
7476
7477         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7478                                wpa_s->own_addr, wpa_s->assoc_freq,
7479                                duration1, interval1, duration2, interval2);
7480         if (ret == 0)
7481                 wpa_s->waiting_presence_resp = 1;
7482
7483         return ret;
7484 }
7485
7486
7487 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7488                         unsigned int interval)
7489 {
7490         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7491                 return -1;
7492
7493         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7494 }
7495
7496
7497 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7498 {
7499         if (wpa_s->current_ssid == NULL) {
7500                 /*
7501                  * current_ssid can be cleared when P2P client interface gets
7502                  * disconnected, so assume this interface was used as P2P
7503                  * client.
7504                  */
7505                 return 1;
7506         }
7507         return wpa_s->current_ssid->p2p_group &&
7508                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7509 }
7510
7511
7512 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7513 {
7514         struct wpa_supplicant *wpa_s = eloop_ctx;
7515
7516         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7517                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7518                            "disabled");
7519                 return;
7520         }
7521
7522         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7523                    "group");
7524         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7525 }
7526
7527
7528 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7529 {
7530         int timeout;
7531
7532         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7533                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7534
7535         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7536                 return;
7537
7538         timeout = wpa_s->conf->p2p_group_idle;
7539         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7540             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7541             timeout = P2P_MAX_CLIENT_IDLE;
7542
7543         if (timeout == 0)
7544                 return;
7545
7546         if (timeout < 0) {
7547                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7548                         timeout = 0; /* special client mode no-timeout */
7549                 else
7550                         return;
7551         }
7552
7553         if (wpa_s->p2p_in_provisioning) {
7554                 /*
7555                  * Use the normal group formation timeout during the
7556                  * provisioning phase to avoid terminating this process too
7557                  * early due to group idle timeout.
7558                  */
7559                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7560                            "during provisioning");
7561                 return;
7562         }
7563
7564         if (wpa_s->show_group_started) {
7565                 /*
7566                  * Use the normal group formation timeout between the end of
7567                  * the provisioning phase and completion of 4-way handshake to
7568                  * avoid terminating this process too early due to group idle
7569                  * timeout.
7570                  */
7571                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7572                            "while waiting for initial 4-way handshake to "
7573                            "complete");
7574                 return;
7575         }
7576
7577         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7578                    timeout);
7579         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7580                                wpa_s, NULL);
7581 }
7582
7583
7584 /* Returns 1 if the interface was removed */
7585 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7586                           u16 reason_code, const u8 *ie, size_t ie_len,
7587                           int locally_generated)
7588 {
7589         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7590                 return 0;
7591
7592         if (!locally_generated)
7593                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7594                                  ie_len);
7595
7596         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7597             wpa_s->current_ssid &&
7598             wpa_s->current_ssid->p2p_group &&
7599             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7600                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7601                            "session is ending");
7602                 if (wpas_p2p_group_delete(wpa_s,
7603                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7604                     > 0)
7605                         return 1;
7606         }
7607
7608         return 0;
7609 }
7610
7611
7612 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7613                              u16 reason_code, const u8 *ie, size_t ie_len,
7614                              int locally_generated)
7615 {
7616         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7617                 return;
7618
7619         if (!locally_generated)
7620                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7621                                    ie_len);
7622 }
7623
7624
7625 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7626 {
7627         struct p2p_data *p2p = wpa_s->global->p2p;
7628
7629         if (p2p == NULL)
7630                 return;
7631
7632         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7633                 return;
7634
7635         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7636                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7637
7638         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7639                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7640
7641         if (wpa_s->wps &&
7642             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7643                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7644
7645         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7646                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7647
7648         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7649                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7650                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7651                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7652                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7653         }
7654
7655         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7656                 p2p_set_sec_dev_types(p2p,
7657                                       (void *) wpa_s->conf->sec_device_type,
7658                                       wpa_s->conf->num_sec_device_types);
7659
7660         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7661                 int i;
7662                 p2p_remove_wps_vendor_extensions(p2p);
7663                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7664                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7665                                 continue;
7666                         p2p_add_wps_vendor_extension(
7667                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7668                 }
7669         }
7670
7671         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7672             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7673                 char country[3];
7674                 country[0] = wpa_s->conf->country[0];
7675                 country[1] = wpa_s->conf->country[1];
7676                 country[2] = 0x04;
7677                 p2p_set_country(p2p, country);
7678         }
7679
7680         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7681                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7682                                      wpa_s->conf->p2p_ssid_postfix ?
7683                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7684                                      0);
7685         }
7686
7687         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7688                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7689
7690         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7691                 u8 reg_class, channel;
7692                 int ret;
7693                 unsigned int r;
7694                 u8 channel_forced;
7695
7696                 if (wpa_s->conf->p2p_listen_reg_class &&
7697                     wpa_s->conf->p2p_listen_channel) {
7698                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7699                         channel = wpa_s->conf->p2p_listen_channel;
7700                         channel_forced = 1;
7701                 } else {
7702                         reg_class = 81;
7703                         /*
7704                          * Pick one of the social channels randomly as the
7705                          * listen channel.
7706                          */
7707                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7708                                 channel = 1;
7709                         else
7710                                 channel = 1 + (r % 3) * 5;
7711                         channel_forced = 0;
7712                 }
7713                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7714                                              channel_forced);
7715                 if (ret)
7716                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7717                                    "failed: %d", ret);
7718         }
7719         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7720                 u8 op_reg_class, op_channel, cfg_op_channel;
7721                 int ret = 0;
7722                 unsigned int r;
7723                 if (wpa_s->conf->p2p_oper_reg_class &&
7724                     wpa_s->conf->p2p_oper_channel) {
7725                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7726                         op_channel = wpa_s->conf->p2p_oper_channel;
7727                         cfg_op_channel = 1;
7728                 } else {
7729                         op_reg_class = 81;
7730                         /*
7731                          * Use random operation channel from (1, 6, 11)
7732                          *if no other preference is indicated.
7733                          */
7734                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7735                                 op_channel = 1;
7736                         else
7737                                 op_channel = 1 + (r % 3) * 5;
7738                         cfg_op_channel = 0;
7739                 }
7740                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7741                                            cfg_op_channel);
7742                 if (ret)
7743                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7744                                    "failed: %d", ret);
7745         }
7746
7747         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7748                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7749                                       wpa_s->conf->p2p_pref_chan) < 0) {
7750                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7751                                    "update failed");
7752                 }
7753
7754                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7755                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7756                                    "update failed");
7757                 }
7758         }
7759
7760         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7761                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7762 }
7763
7764
7765 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7766                      int duration)
7767 {
7768         if (!wpa_s->ap_iface)
7769                 return -1;
7770         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7771                                    duration);
7772 }
7773
7774
7775 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7776 {
7777         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7778                 return -1;
7779
7780         wpa_s->global->cross_connection = enabled;
7781         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7782
7783         if (!enabled) {
7784                 struct wpa_supplicant *iface;
7785
7786                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7787                 {
7788                         if (iface->cross_connect_enabled == 0)
7789                                 continue;
7790
7791                         iface->cross_connect_enabled = 0;
7792                         iface->cross_connect_in_use = 0;
7793                         wpa_msg_global(iface->parent, MSG_INFO,
7794                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7795                                        iface->ifname,
7796                                        iface->cross_connect_uplink);
7797                 }
7798         }
7799
7800         return 0;
7801 }
7802
7803
7804 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7805 {
7806         struct wpa_supplicant *iface;
7807
7808         if (!uplink->global->cross_connection)
7809                 return;
7810
7811         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7812                 if (!iface->cross_connect_enabled)
7813                         continue;
7814                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7815                     0)
7816                         continue;
7817                 if (iface->ap_iface == NULL)
7818                         continue;
7819                 if (iface->cross_connect_in_use)
7820                         continue;
7821
7822                 iface->cross_connect_in_use = 1;
7823                 wpa_msg_global(iface->parent, MSG_INFO,
7824                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7825                                iface->ifname, iface->cross_connect_uplink);
7826         }
7827 }
7828
7829
7830 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7831 {
7832         struct wpa_supplicant *iface;
7833
7834         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7835                 if (!iface->cross_connect_enabled)
7836                         continue;
7837                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7838                     0)
7839                         continue;
7840                 if (!iface->cross_connect_in_use)
7841                         continue;
7842
7843                 wpa_msg_global(iface->parent, MSG_INFO,
7844                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7845                                iface->ifname, iface->cross_connect_uplink);
7846                 iface->cross_connect_in_use = 0;
7847         }
7848 }
7849
7850
7851 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7852 {
7853         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7854             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7855             wpa_s->cross_connect_disallowed)
7856                 wpas_p2p_disable_cross_connect(wpa_s);
7857         else
7858                 wpas_p2p_enable_cross_connect(wpa_s);
7859         if (!wpa_s->ap_iface &&
7860             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7861                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7862 }
7863
7864
7865 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7866 {
7867         wpas_p2p_disable_cross_connect(wpa_s);
7868         if (!wpa_s->ap_iface &&
7869             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7870                                          wpa_s, NULL))
7871                 wpas_p2p_set_group_idle_timeout(wpa_s);
7872 }
7873
7874
7875 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7876 {
7877         struct wpa_supplicant *iface;
7878
7879         if (!wpa_s->global->cross_connection)
7880                 return;
7881
7882         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7883                 if (iface == wpa_s)
7884                         continue;
7885                 if (iface->drv_flags &
7886                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7887                         continue;
7888                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7889                     iface != wpa_s->parent)
7890                         continue;
7891
7892                 wpa_s->cross_connect_enabled = 1;
7893                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7894                            sizeof(wpa_s->cross_connect_uplink));
7895                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7896                            "%s to %s whenever uplink is available",
7897                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7898
7899                 if (iface->ap_iface || iface->current_ssid == NULL ||
7900                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7901                     iface->cross_connect_disallowed ||
7902                     iface->wpa_state != WPA_COMPLETED)
7903                         break;
7904
7905                 wpa_s->cross_connect_in_use = 1;
7906                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7907                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7908                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7909                 break;
7910         }
7911 }
7912
7913
7914 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7915 {
7916         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7917             !wpa_s->p2p_in_provisioning)
7918                 return 0; /* not P2P client operation */
7919
7920         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7921                    "session overlap");
7922         if (wpa_s != wpa_s->parent)
7923                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7924         wpas_p2p_group_formation_failed(wpa_s);
7925         return 1;
7926 }
7927
7928
7929 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7930 {
7931         struct wpa_supplicant *wpa_s = eloop_ctx;
7932         wpas_p2p_notif_pbc_overlap(wpa_s);
7933 }
7934
7935
7936 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
7937 {
7938         struct p2p_channels chan, cli_chan;
7939         struct wpa_supplicant *ifs;
7940
7941         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7942                 return;
7943
7944         os_memset(&chan, 0, sizeof(chan));
7945         os_memset(&cli_chan, 0, sizeof(cli_chan));
7946         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7947                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7948                            "channel list");
7949                 return;
7950         }
7951
7952         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7953
7954         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
7955                 int freq;
7956                 if (!ifs->current_ssid ||
7957                     !ifs->current_ssid->p2p_group ||
7958                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
7959                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
7960                                 continue;
7961                 freq = ifs->current_ssid->frequency;
7962                 if (freq_included(&chan, freq)) {
7963                         wpa_dbg(ifs, MSG_DEBUG,
7964                                 "P2P GO operating frequency %d MHz in valid range",
7965                                 freq);
7966                         continue;
7967                 }
7968
7969                 wpa_dbg(ifs, MSG_DEBUG,
7970                         "P2P GO operating in invalid frequency %d MHz", freq);
7971                 /* TODO: Consider using CSA or removing the group within
7972                  * wpa_supplicant */
7973                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
7974         }
7975 }
7976
7977
7978 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7979                                      struct wpa_scan_results *scan_res)
7980 {
7981         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7982 }
7983
7984
7985 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7986 {
7987         struct wpa_global *global = wpa_s->global;
7988         int found = 0;
7989         const u8 *peer;
7990
7991         if (global->p2p == NULL)
7992                 return -1;
7993
7994         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7995
7996         if (wpa_s->pending_interface_name[0] &&
7997             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7998                 found = 1;
7999
8000         peer = p2p_get_go_neg_peer(global->p2p);
8001         if (peer) {
8002                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
8003                            MACSTR, MAC2STR(peer));
8004                 p2p_unauthorize(global->p2p, peer);
8005                 found = 1;
8006         }
8007
8008         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
8009                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
8010                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
8011                 found = 1;
8012         }
8013
8014         if (wpa_s->pending_pd_before_join) {
8015                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
8016                 wpa_s->pending_pd_before_join = 0;
8017                 found = 1;
8018         }
8019
8020         wpas_p2p_stop_find(wpa_s);
8021
8022         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8023                 if (wpa_s == global->p2p_group_formation &&
8024                     (wpa_s->p2p_in_provisioning ||
8025                      wpa_s->parent->pending_interface_type ==
8026                      WPA_IF_P2P_CLIENT)) {
8027                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
8028                                    "formation found - cancelling",
8029                                    wpa_s->ifname);
8030                         found = 1;
8031                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8032                                              wpa_s->parent, NULL);
8033                         if (wpa_s->p2p_in_provisioning) {
8034                                 wpas_group_formation_completed(wpa_s, 0);
8035                                 break;
8036                         }
8037                         wpas_p2p_group_delete(wpa_s,
8038                                               P2P_GROUP_REMOVAL_REQUESTED);
8039                         break;
8040                 } else if (wpa_s->p2p_in_invitation) {
8041                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
8042                                    wpa_s->ifname);
8043                         found = 1;
8044                         wpas_p2p_group_formation_failed(wpa_s);
8045                 }
8046         }
8047
8048         if (!found) {
8049                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
8050                 return -1;
8051         }
8052
8053         return 0;
8054 }
8055
8056
8057 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
8058 {
8059         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
8060                 return;
8061
8062         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
8063                    "being available anymore");
8064         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
8065 }
8066
8067
8068 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
8069                                    int freq_24, int freq_5, int freq_overall)
8070 {
8071         struct p2p_data *p2p = wpa_s->global->p2p;
8072         if (p2p == NULL)
8073                 return;
8074         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
8075 }
8076
8077
8078 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
8079 {
8080         u8 peer[ETH_ALEN];
8081         struct p2p_data *p2p = wpa_s->global->p2p;
8082
8083         if (p2p == NULL)
8084                 return -1;
8085
8086         if (hwaddr_aton(addr, peer))
8087                 return -1;
8088
8089         return p2p_unauthorize(p2p, peer);
8090 }
8091
8092
8093 /**
8094  * wpas_p2p_disconnect - Disconnect from a P2P Group
8095  * @wpa_s: Pointer to wpa_supplicant data
8096  * Returns: 0 on success, -1 on failure
8097  *
8098  * This can be used to disconnect from a group in which the local end is a P2P
8099  * Client or to end a P2P Group in case the local end is the Group Owner. If a
8100  * virtual network interface was created for this group, that interface will be
8101  * removed. Otherwise, only the configured P2P group network will be removed
8102  * from the interface.
8103  */
8104 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
8105 {
8106
8107         if (wpa_s == NULL)
8108                 return -1;
8109
8110         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
8111                 -1 : 0;
8112 }
8113
8114
8115 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
8116 {
8117         int ret;
8118
8119         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8120                 return 0;
8121
8122         ret = p2p_in_progress(wpa_s->global->p2p);
8123         if (ret == 0) {
8124                 /*
8125                  * Check whether there is an ongoing WPS provisioning step (or
8126                  * other parts of group formation) on another interface since
8127                  * p2p_in_progress() does not report this to avoid issues for
8128                  * scans during such provisioning step.
8129                  */
8130                 if (wpa_s->global->p2p_group_formation &&
8131                     wpa_s->global->p2p_group_formation != wpa_s) {
8132                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
8133                                 "in group formation",
8134                                 wpa_s->global->p2p_group_formation->ifname);
8135                         ret = 1;
8136                 }
8137         }
8138
8139         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
8140                 struct os_reltime now;
8141                 os_get_reltime(&now);
8142                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
8143                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
8144                         /* Wait for the first client has expired */
8145                         wpa_s->global->p2p_go_wait_client.sec = 0;
8146                 } else {
8147                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
8148                         ret = 1;
8149                 }
8150         }
8151
8152         return ret;
8153 }
8154
8155
8156 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
8157                               struct wpa_ssid *ssid)
8158 {
8159         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
8160             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8161                                  wpa_s->parent, NULL) > 0) {
8162                 /**
8163                  * Remove the network by scheduling the group formation
8164                  * timeout to happen immediately. The teardown code
8165                  * needs to be scheduled to run asynch later so that we
8166                  * don't delete data from under ourselves unexpectedly.
8167                  * Calling wpas_p2p_group_formation_timeout directly
8168                  * causes a series of crashes in WPS failure scenarios.
8169                  */
8170                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
8171                            "P2P group network getting removed");
8172                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
8173                                        wpa_s->parent, NULL);
8174         }
8175 }
8176
8177
8178 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
8179                                           const u8 *addr, const u8 *ssid,
8180                                           size_t ssid_len)
8181 {
8182         struct wpa_ssid *s;
8183         size_t i;
8184
8185         for (s = wpa_s->conf->ssid; s; s = s->next) {
8186                 if (s->disabled != 2)
8187                         continue;
8188                 if (ssid &&
8189                     (ssid_len != s->ssid_len ||
8190                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
8191                         continue;
8192                 if (addr == NULL) {
8193                         if (s->mode == WPAS_MODE_P2P_GO)
8194                                 return s;
8195                         continue;
8196                 }
8197                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
8198                         return s; /* peer is GO in the persistent group */
8199                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
8200                         continue;
8201                 for (i = 0; i < s->num_p2p_clients; i++) {
8202                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
8203                                       addr, ETH_ALEN) == 0)
8204                                 return s; /* peer is P2P client in persistent
8205                                            * group */
8206                 }
8207         }
8208
8209         return NULL;
8210 }
8211
8212
8213 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
8214                                        const u8 *addr)
8215 {
8216         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8217                                  wpa_s->parent, NULL) > 0) {
8218                 /*
8219                  * This can happen if WPS provisioning step is not terminated
8220                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
8221                  * peer was able to connect, there is no need to time out group
8222                  * formation after this, though. In addition, this is used with
8223                  * the initial connection wait on the GO as a separate formation
8224                  * timeout and as such, expected to be hit after the initial WPS
8225                  * provisioning step.
8226                  */
8227                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
8228
8229                 if (!wpa_s->p2p_go_group_formation_completed &&
8230                     !wpa_s->group_formation_reported) {
8231                         /*
8232                          * GO has not yet notified group formation success since
8233                          * the WPS step was not completed cleanly. Do that
8234                          * notification now since the P2P Client was able to
8235                          * connect and as such, must have received the
8236                          * credential from the WPS step.
8237                          */
8238                         if (wpa_s->global->p2p)
8239                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
8240                         wpas_group_formation_completed(wpa_s, 1);
8241                 }
8242         }
8243         if (!wpa_s->p2p_go_group_formation_completed) {
8244                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
8245                 wpa_s->p2p_go_group_formation_completed = 1;
8246                 wpa_s->global->p2p_group_formation = NULL;
8247                 wpa_s->p2p_in_provisioning = 0;
8248                 wpa_s->p2p_in_invitation = 0;
8249         }
8250         wpa_s->global->p2p_go_wait_client.sec = 0;
8251         if (addr == NULL)
8252                 return;
8253         wpas_p2p_add_persistent_group_client(wpa_s, addr);
8254 }
8255
8256
8257 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
8258                                        int group_added)
8259 {
8260         struct wpa_supplicant *group = wpa_s;
8261         int ret = 0;
8262
8263         if (wpa_s->global->p2p_group_formation)
8264                 group = wpa_s->global->p2p_group_formation;
8265         wpa_s = wpa_s->parent;
8266         offchannel_send_action_done(wpa_s);
8267         if (group_added)
8268                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
8269         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
8270         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
8271                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
8272                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
8273                          wpa_s->p2p_persistent_id,
8274                          wpa_s->p2p_pd_before_go_neg,
8275                          wpa_s->p2p_go_ht40,
8276                          wpa_s->p2p_go_vht);
8277         return ret;
8278 }
8279
8280
8281 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
8282 {
8283         int res;
8284
8285         if (!wpa_s->p2p_fallback_to_go_neg ||
8286             wpa_s->p2p_in_provisioning <= 5)
8287                 return 0;
8288
8289         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
8290                 return 0; /* peer operating as a GO */
8291
8292         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
8293                 "fallback to GO Negotiation");
8294         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
8295                        "reason=GO-not-found");
8296         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
8297
8298         return res == 1 ? 2 : 1;
8299 }
8300
8301
8302 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
8303 {
8304         struct wpa_supplicant *ifs;
8305
8306         if (wpa_s->wpa_state > WPA_SCANNING) {
8307                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
8308                         "concurrent operation",
8309                         wpa_s->conf->p2p_search_delay);
8310                 return wpa_s->conf->p2p_search_delay;
8311         }
8312
8313         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8314                          radio_list) {
8315                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
8316                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
8317                                 "delay due to concurrent operation on "
8318                                 "interface %s",
8319                                 wpa_s->conf->p2p_search_delay,
8320                                 ifs->ifname);
8321                         return wpa_s->conf->p2p_search_delay;
8322                 }
8323         }
8324
8325         return 0;
8326 }
8327
8328
8329 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
8330                                      struct wpa_ssid *s, const u8 *addr,
8331                                      int iface_addr)
8332 {
8333         struct psk_list_entry *psk, *tmp;
8334         int changed = 0;
8335
8336         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
8337                               list) {
8338                 if ((iface_addr && !psk->p2p &&
8339                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
8340                     (!iface_addr && psk->p2p &&
8341                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
8342                         wpa_dbg(wpa_s, MSG_DEBUG,
8343                                 "P2P: Remove persistent group PSK list entry for "
8344                                 MACSTR " p2p=%u",
8345                                 MAC2STR(psk->addr), psk->p2p);
8346                         dl_list_del(&psk->list);
8347                         os_free(psk);
8348                         changed++;
8349                 }
8350         }
8351
8352         return changed;
8353 }
8354
8355
8356 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
8357                          const u8 *p2p_dev_addr,
8358                          const u8 *psk, size_t psk_len)
8359 {
8360         struct wpa_ssid *ssid = wpa_s->current_ssid;
8361         struct wpa_ssid *persistent;
8362         struct psk_list_entry *p, *last;
8363
8364         if (psk_len != sizeof(p->psk))
8365                 return;
8366
8367         if (p2p_dev_addr) {
8368                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
8369                         " p2p_dev_addr=" MACSTR,
8370                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
8371                 if (is_zero_ether_addr(p2p_dev_addr))
8372                         p2p_dev_addr = NULL;
8373         } else {
8374                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
8375                         MAC2STR(mac_addr));
8376         }
8377
8378         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
8379                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
8380                 /* To be added to persistent group once created */
8381                 if (wpa_s->global->add_psk == NULL) {
8382                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
8383                         if (wpa_s->global->add_psk == NULL)
8384                                 return;
8385                 }
8386                 p = wpa_s->global->add_psk;
8387                 if (p2p_dev_addr) {
8388                         p->p2p = 1;
8389                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8390                 } else {
8391                         p->p2p = 0;
8392                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
8393                 }
8394                 os_memcpy(p->psk, psk, psk_len);
8395                 return;
8396         }
8397
8398         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
8399                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
8400                 return;
8401         }
8402
8403         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
8404                                              ssid->ssid_len);
8405         if (!persistent) {
8406                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
8407                 return;
8408         }
8409
8410         p = os_zalloc(sizeof(*p));
8411         if (p == NULL)
8412                 return;
8413         if (p2p_dev_addr) {
8414                 p->p2p = 1;
8415                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8416         } else {
8417                 p->p2p = 0;
8418                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8419         }
8420         os_memcpy(p->psk, psk, psk_len);
8421
8422         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8423             (last = dl_list_last(&persistent->psk_list,
8424                                  struct psk_list_entry, list))) {
8425                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8426                         MACSTR " (p2p=%u) to make room for a new one",
8427                         MAC2STR(last->addr), last->p2p);
8428                 dl_list_del(&last->list);
8429                 os_free(last);
8430         }
8431
8432         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
8433                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
8434                                   p2p_dev_addr == NULL);
8435         if (p2p_dev_addr) {
8436                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8437                         MACSTR, MAC2STR(p2p_dev_addr));
8438         } else {
8439                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8440                         MAC2STR(mac_addr));
8441         }
8442         dl_list_add(&persistent->psk_list, &p->list);
8443
8444         if (wpa_s->parent->conf->update_config &&
8445             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
8446                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8447 }
8448
8449
8450 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8451                                 struct wpa_ssid *s, const u8 *addr,
8452                                 int iface_addr)
8453 {
8454         int res;
8455
8456         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8457         if (res > 0 && wpa_s->conf->update_config &&
8458             wpa_config_write(wpa_s->confname, wpa_s->conf))
8459                 wpa_dbg(wpa_s, MSG_DEBUG,
8460                         "P2P: Failed to update configuration");
8461 }
8462
8463
8464 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8465                                       const u8 *peer, int iface_addr)
8466 {
8467         struct hostapd_data *hapd;
8468         struct hostapd_wpa_psk *psk, *prev, *rem;
8469         struct sta_info *sta;
8470
8471         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8472             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8473                 return;
8474
8475         /* Remove per-station PSK entry */
8476         hapd = wpa_s->ap_iface->bss[0];
8477         prev = NULL;
8478         psk = hapd->conf->ssid.wpa_psk;
8479         while (psk) {
8480                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8481                     (!iface_addr &&
8482                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8483                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8484                                 MACSTR " iface_addr=%d",
8485                                 MAC2STR(peer), iface_addr);
8486                         if (prev)
8487                                 prev->next = psk->next;
8488                         else
8489                                 hapd->conf->ssid.wpa_psk = psk->next;
8490                         rem = psk;
8491                         psk = psk->next;
8492                         os_free(rem);
8493                 } else {
8494                         prev = psk;
8495                         psk = psk->next;
8496                 }
8497         }
8498
8499         /* Disconnect from group */
8500         if (iface_addr)
8501                 sta = ap_get_sta(hapd, peer);
8502         else
8503                 sta = ap_get_sta_p2p(hapd, peer);
8504         if (sta) {
8505                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8506                         " (iface_addr=%d) from group",
8507                         MAC2STR(peer), iface_addr);
8508                 hostapd_drv_sta_deauth(hapd, sta->addr,
8509                                        WLAN_REASON_DEAUTH_LEAVING);
8510                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8511         }
8512 }
8513
8514
8515 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8516                             int iface_addr)
8517 {
8518         struct wpa_ssid *s;
8519         struct wpa_supplicant *w;
8520
8521         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8522
8523         /* Remove from any persistent group */
8524         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
8525                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8526                         continue;
8527                 if (!iface_addr)
8528                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
8529                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
8530         }
8531
8532         /* Remove from any operating group */
8533         for (w = wpa_s->global->ifaces; w; w = w->next)
8534                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8535 }
8536
8537
8538 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8539 {
8540         struct wpa_supplicant *wpa_s = eloop_ctx;
8541         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8542 }
8543
8544
8545 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8546 {
8547         struct wpa_supplicant *wpa_s = eloop_ctx;
8548
8549         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8550         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8551 }
8552
8553
8554 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8555                                         struct wpa_ssid *ssid)
8556 {
8557         struct wpa_supplicant *iface;
8558
8559         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8560                 if (!iface->current_ssid ||
8561                     iface->current_ssid->frequency == freq ||
8562                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8563                      !iface->current_ssid->p2p_group))
8564                         continue;
8565
8566                 /* Remove the connection with least priority */
8567                 if (!wpas_is_p2p_prioritized(iface)) {
8568                         /* STA connection has priority over existing
8569                          * P2P connection, so remove the interface. */
8570                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8571                         eloop_register_timeout(0, 0,
8572                                                wpas_p2p_group_freq_conflict,
8573                                                iface, NULL);
8574                         /* If connection in progress is P2P connection, do not
8575                          * proceed for the connection. */
8576                         if (wpa_s == iface)
8577                                 return -1;
8578                         else
8579                                 return 0;
8580                 } else {
8581                         /* P2P connection has priority, disable the STA network
8582                          */
8583                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8584                                                        ssid);
8585                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8586                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8587                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8588                                   ETH_ALEN);
8589                         /* If P2P connection is in progress, continue
8590                          * connecting...*/
8591                         if (wpa_s == iface)
8592                                 return 0;
8593                         else
8594                                 return -1;
8595                 }
8596         }
8597
8598         return 0;
8599 }
8600
8601
8602 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8603 {
8604         struct wpa_ssid *ssid = wpa_s->current_ssid;
8605
8606         if (ssid == NULL || !ssid->p2p_group)
8607                 return 0;
8608
8609         if (wpa_s->p2p_last_4way_hs_fail &&
8610             wpa_s->p2p_last_4way_hs_fail == ssid) {
8611                 u8 go_dev_addr[ETH_ALEN];
8612                 struct wpa_ssid *persistent;
8613
8614                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8615                                               ssid->ssid,
8616                                               ssid->ssid_len) <= 0) {
8617                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8618                         goto disconnect;
8619                 }
8620
8621                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8622                         MACSTR, MAC2STR(go_dev_addr));
8623                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8624                                                      ssid->ssid,
8625                                                      ssid->ssid_len);
8626                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8627                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8628                         goto disconnect;
8629                 }
8630                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8631                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8632                                persistent->id);
8633         disconnect:
8634                 wpa_s->p2p_last_4way_hs_fail = NULL;
8635                 /*
8636                  * Remove the group from a timeout to avoid issues with caller
8637                  * continuing to use the interface if this is on a P2P group
8638                  * interface.
8639                  */
8640                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8641                                        wpa_s, NULL);
8642                 return 1;
8643         }
8644
8645         wpa_s->p2p_last_4way_hs_fail = ssid;
8646         return 0;
8647 }
8648
8649
8650 #ifdef CONFIG_WPS_NFC
8651
8652 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8653                                              struct wpabuf *p2p)
8654 {
8655         struct wpabuf *ret;
8656         size_t wsc_len;
8657
8658         if (p2p == NULL) {
8659                 wpabuf_free(wsc);
8660                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8661                 return NULL;
8662         }
8663
8664         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8665         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8666         if (ret == NULL) {
8667                 wpabuf_free(wsc);
8668                 wpabuf_free(p2p);
8669                 return NULL;
8670         }
8671
8672         wpabuf_put_be16(ret, wsc_len);
8673         if (wsc)
8674                 wpabuf_put_buf(ret, wsc);
8675         wpabuf_put_be16(ret, wpabuf_len(p2p));
8676         wpabuf_put_buf(ret, p2p);
8677
8678         wpabuf_free(wsc);
8679         wpabuf_free(p2p);
8680         wpa_hexdump_buf(MSG_DEBUG,
8681                         "P2P: Generated NFC connection handover message", ret);
8682
8683         if (ndef && ret) {
8684                 struct wpabuf *tmp;
8685                 tmp = ndef_build_p2p(ret);
8686                 wpabuf_free(ret);
8687                 if (tmp == NULL) {
8688                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8689                         return NULL;
8690                 }
8691                 ret = tmp;
8692         }
8693
8694         return ret;
8695 }
8696
8697
8698 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8699                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8700 {
8701         struct wpa_supplicant *iface;
8702
8703         if (go_dev_addr)
8704                 os_memset(go_dev_addr, 0, ETH_ALEN);
8705         if (ssid)
8706                 *ssid = NULL;
8707         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8708                 if (iface->wpa_state < WPA_ASSOCIATING ||
8709                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8710                     !iface->current_ssid->p2p_group ||
8711                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8712                         continue;
8713                 if (ssid)
8714                         *ssid = iface->current_ssid;
8715                 if (go_dev_addr)
8716                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8717                 return iface->assoc_freq;
8718         }
8719         return 0;
8720 }
8721
8722
8723 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8724                                           int ndef)
8725 {
8726         struct wpabuf *wsc, *p2p;
8727         struct wpa_ssid *ssid;
8728         u8 go_dev_addr[ETH_ALEN];
8729         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8730
8731         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8732                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8733                 return NULL;
8734         }
8735
8736         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8737             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8738                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8739                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8740                 return NULL;
8741         }
8742
8743         if (cli_freq == 0) {
8744                 wsc = wps_build_nfc_handover_req_p2p(
8745                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8746         } else
8747                 wsc = NULL;
8748         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8749                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8750                                          ssid ? ssid->ssid_len : 0);
8751
8752         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8753 }
8754
8755
8756 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8757                                           int ndef, int tag)
8758 {
8759         struct wpabuf *wsc, *p2p;
8760         struct wpa_ssid *ssid;
8761         u8 go_dev_addr[ETH_ALEN];
8762         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8763
8764         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8765                 return NULL;
8766
8767         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8768             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8769                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8770                 return NULL;
8771
8772         if (cli_freq == 0) {
8773                 wsc = wps_build_nfc_handover_sel_p2p(
8774                         wpa_s->parent->wps,
8775                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8776                         DEV_PW_NFC_CONNECTION_HANDOVER,
8777                         wpa_s->conf->wps_nfc_dh_pubkey,
8778                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8779         } else
8780                 wsc = NULL;
8781         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8782                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8783                                          ssid ? ssid->ssid_len : 0);
8784
8785         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8786 }
8787
8788
8789 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8790                                    struct p2p_nfc_params *params)
8791 {
8792         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8793                    "connection handover (freq=%d)",
8794                    params->go_freq);
8795
8796         if (params->go_freq && params->go_ssid_len) {
8797                 wpa_s->p2p_wps_method = WPS_NFC;
8798                 wpa_s->pending_join_wps_method = WPS_NFC;
8799                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8800                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8801                           ETH_ALEN);
8802                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8803                                            params->go_ssid,
8804                                            params->go_ssid_len);
8805         }
8806
8807         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8808                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8809                                 params->go_freq, -1, 0, 1, 1);
8810 }
8811
8812
8813 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8814                                   struct p2p_nfc_params *params, int tag)
8815 {
8816         int res, persistent;
8817         struct wpa_ssid *ssid;
8818
8819         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8820                    "connection handover");
8821         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8822                 ssid = wpa_s->current_ssid;
8823                 if (ssid == NULL)
8824                         continue;
8825                 if (ssid->mode != WPAS_MODE_P2P_GO)
8826                         continue;
8827                 if (wpa_s->ap_iface == NULL)
8828                         continue;
8829                 break;
8830         }
8831         if (wpa_s == NULL) {
8832                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8833                 return -1;
8834         }
8835
8836         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8837             DEV_PW_NFC_CONNECTION_HANDOVER &&
8838             !wpa_s->parent->p2p_oob_dev_pw) {
8839                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8840                 return -1;
8841         }
8842         res = wpas_ap_wps_add_nfc_pw(
8843                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8844                 wpa_s->parent->p2p_oob_dev_pw,
8845                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8846                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8847         if (res)
8848                 return res;
8849
8850         if (!tag) {
8851                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8852                 return 0;
8853         }
8854
8855         if (!params->peer ||
8856             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8857                 return 0;
8858
8859         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8860                    " to join", MAC2STR(params->peer->p2p_device_addr));
8861
8862         wpa_s->global->p2p_invite_group = wpa_s;
8863         persistent = ssid->p2p_persistent_group &&
8864                 wpas_p2p_get_persistent(wpa_s->parent,
8865                                         params->peer->p2p_device_addr,
8866                                         ssid->ssid, ssid->ssid_len);
8867         wpa_s->parent->pending_invite_ssid_id = -1;
8868
8869         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8870                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8871                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8872                           wpa_s->global->p2p_dev_addr, persistent, 0,
8873                           wpa_s->parent->p2p_oob_dev_pw_id);
8874 }
8875
8876
8877 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8878                                     struct p2p_nfc_params *params,
8879                                     int forced_freq)
8880 {
8881         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8882                    "connection handover");
8883         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8884                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8885                                 forced_freq, -1, 0, 1, 1);
8886 }
8887
8888
8889 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8890                                     struct p2p_nfc_params *params,
8891                                     int forced_freq)
8892 {
8893         int res;
8894
8895         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8896                    "connection handover");
8897         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8898                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8899                                forced_freq, -1, 0, 1, 1);
8900         if (res)
8901                 return res;
8902
8903         res = wpas_p2p_listen(wpa_s, 60);
8904         if (res) {
8905                 p2p_unauthorize(wpa_s->global->p2p,
8906                                 params->peer->p2p_device_addr);
8907         }
8908
8909         return res;
8910 }
8911
8912
8913 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8914                                             const struct wpabuf *data,
8915                                             int sel, int tag, int forced_freq)
8916 {
8917         const u8 *pos, *end;
8918         u16 len, id;
8919         struct p2p_nfc_params params;
8920         int res;
8921
8922         os_memset(&params, 0, sizeof(params));
8923         params.sel = sel;
8924
8925         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8926
8927         pos = wpabuf_head(data);
8928         end = pos + wpabuf_len(data);
8929
8930         if (end - pos < 2) {
8931                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8932                            "attributes");
8933                 return -1;
8934         }
8935         len = WPA_GET_BE16(pos);
8936         pos += 2;
8937         if (len > end - pos) {
8938                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8939                            "attributes");
8940                 return -1;
8941         }
8942         params.wsc_attr = pos;
8943         params.wsc_len = len;
8944         pos += len;
8945
8946         if (end - pos < 2) {
8947                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8948                            "attributes");
8949                 return -1;
8950         }
8951         len = WPA_GET_BE16(pos);
8952         pos += 2;
8953         if (len > end - pos) {
8954                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8955                            "attributes");
8956                 return -1;
8957         }
8958         params.p2p_attr = pos;
8959         params.p2p_len = len;
8960         pos += len;
8961
8962         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8963                     params.wsc_attr, params.wsc_len);
8964         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8965                     params.p2p_attr, params.p2p_len);
8966         if (pos < end) {
8967                 wpa_hexdump(MSG_DEBUG,
8968                             "P2P: Ignored extra data after P2P attributes",
8969                             pos, end - pos);
8970         }
8971
8972         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8973         if (res)
8974                 return res;
8975
8976         if (params.next_step == NO_ACTION)
8977                 return 0;
8978
8979         if (params.next_step == BOTH_GO) {
8980                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8981                         MAC2STR(params.peer->p2p_device_addr));
8982                 return 0;
8983         }
8984
8985         if (params.next_step == PEER_CLIENT) {
8986                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8987                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8988                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8989                                 " ssid=\"%s\"",
8990                                 MAC2STR(params.peer->p2p_device_addr),
8991                                 params.go_freq,
8992                                 MAC2STR(params.go_dev_addr),
8993                                 wpa_ssid_txt(params.go_ssid,
8994                                              params.go_ssid_len));
8995                 } else {
8996                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8997                                 "peer=" MACSTR " freq=%d",
8998                                 MAC2STR(params.peer->p2p_device_addr),
8999                                 params.go_freq);
9000                 }
9001                 return 0;
9002         }
9003
9004         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
9005                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
9006                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
9007                 return 0;
9008         }
9009
9010         wpabuf_free(wpa_s->p2p_oob_dev_pw);
9011         wpa_s->p2p_oob_dev_pw = NULL;
9012
9013         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
9014                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
9015                            "received");
9016                 return -1;
9017         }
9018
9019         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
9020         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
9021         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
9022                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
9023         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
9024                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
9025         wpa_s->p2p_peer_oob_pk_hash_known = 1;
9026
9027         if (tag) {
9028                 if (id < 0x10) {
9029                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
9030                                    "peer OOB Device Password Id %u", id);
9031                         return -1;
9032                 }
9033                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
9034                            "Device Password Id %u", id);
9035                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
9036                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
9037                                 params.oob_dev_pw_len -
9038                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
9039                 wpa_s->p2p_oob_dev_pw_id = id;
9040                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
9041                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
9042                         params.oob_dev_pw_len -
9043                         WPS_OOB_PUBKEY_HASH_LEN - 2);
9044                 if (wpa_s->p2p_oob_dev_pw == NULL)
9045                         return -1;
9046
9047                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
9048                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
9049                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
9050                         return -1;
9051         } else {
9052                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
9053                            "without Device Password");
9054                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
9055         }
9056
9057         switch (params.next_step) {
9058         case NO_ACTION:
9059         case BOTH_GO:
9060         case PEER_CLIENT:
9061                 /* already covered above */
9062                 return 0;
9063         case JOIN_GROUP:
9064                 return wpas_p2p_nfc_join_group(wpa_s, &params);
9065         case AUTH_JOIN:
9066                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
9067         case INIT_GO_NEG:
9068                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
9069         case RESP_GO_NEG:
9070                 /* TODO: use own OOB Dev Pw */
9071                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
9072         }
9073
9074         return -1;
9075 }
9076
9077
9078 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
9079                              const struct wpabuf *data, int forced_freq)
9080 {
9081         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9082                 return -1;
9083
9084         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
9085 }
9086
9087
9088 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
9089                                  const struct wpabuf *req,
9090                                  const struct wpabuf *sel, int forced_freq)
9091 {
9092         struct wpabuf *tmp;
9093         int ret;
9094
9095         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9096                 return -1;
9097
9098         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
9099
9100         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
9101                           wpabuf_head(req), wpabuf_len(req));
9102         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
9103                           wpabuf_head(sel), wpabuf_len(sel));
9104         if (forced_freq)
9105                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
9106         tmp = ndef_parse_p2p(init ? sel : req);
9107         if (tmp == NULL) {
9108                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
9109                 return -1;
9110         }
9111
9112         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
9113                                                forced_freq);
9114         wpabuf_free(tmp);
9115
9116         return ret;
9117 }
9118
9119
9120 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
9121 {
9122         const u8 *if_addr;
9123         int go_intent = wpa_s->conf->p2p_go_intent;
9124         struct wpa_supplicant *iface;
9125
9126         if (wpa_s->global->p2p == NULL)
9127                 return -1;
9128
9129         if (!enabled) {
9130                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
9131                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
9132                 {
9133                         if (!iface->ap_iface)
9134                                 continue;
9135                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
9136                 }
9137                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
9138                                                  0, NULL);
9139                 if (wpa_s->p2p_nfc_tag_enabled)
9140                         wpas_p2p_remove_pending_group_interface(wpa_s);
9141                 wpa_s->p2p_nfc_tag_enabled = 0;
9142                 return 0;
9143         }
9144
9145         if (wpa_s->global->p2p_disabled)
9146                 return -1;
9147
9148         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
9149             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
9150             wpa_s->conf->wps_nfc_dev_pw == NULL ||
9151             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
9152                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
9153                            "to allow static handover cases");
9154                 return -1;
9155         }
9156
9157         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
9158
9159         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
9160         wpabuf_free(wpa_s->p2p_oob_dev_pw);
9161         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
9162         if (wpa_s->p2p_oob_dev_pw == NULL)
9163                 return -1;
9164         wpa_s->p2p_peer_oob_pk_hash_known = 0;
9165
9166         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
9167             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
9168                 /*
9169                  * P2P Group Interface present and the command came on group
9170                  * interface, so enable the token for the current interface.
9171                  */
9172                 wpa_s->create_p2p_iface = 0;
9173         } else {
9174                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
9175         }
9176
9177         if (wpa_s->create_p2p_iface) {
9178                 enum wpa_driver_if_type iftype;
9179                 /* Prepare to add a new interface for the group */
9180                 iftype = WPA_IF_P2P_GROUP;
9181                 if (go_intent == 15)
9182                         iftype = WPA_IF_P2P_GO;
9183                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
9184                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
9185                                    "interface for the group");
9186                         return -1;
9187                 }
9188
9189                 if_addr = wpa_s->pending_interface_addr;
9190         } else
9191                 if_addr = wpa_s->own_addr;
9192
9193         wpa_s->p2p_nfc_tag_enabled = enabled;
9194
9195         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
9196                 struct hostapd_data *hapd;
9197                 if (iface->ap_iface == NULL)
9198                         continue;
9199                 hapd = iface->ap_iface->bss[0];
9200                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
9201                 hapd->conf->wps_nfc_dh_pubkey =
9202                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
9203                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
9204                 hapd->conf->wps_nfc_dh_privkey =
9205                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
9206                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
9207                 hapd->conf->wps_nfc_dev_pw =
9208                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
9209                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
9210
9211                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
9212                         wpa_dbg(iface, MSG_DEBUG,
9213                                 "P2P: Failed to enable NFC Tag for GO");
9214                 }
9215         }
9216         p2p_set_authorized_oob_dev_pw_id(
9217                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
9218                 if_addr);
9219
9220         return 0;
9221 }
9222
9223 #endif /* CONFIG_WPS_NFC */
9224
9225
9226 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
9227                                              struct wpa_used_freq_data *freqs,
9228                                              unsigned int num)
9229 {
9230         u8 curr_chan, cand, chan;
9231         unsigned int i;
9232
9233         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
9234         for (i = 0, cand = 0; i < num; i++) {
9235                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
9236                 if (curr_chan == chan) {
9237                         cand = 0;
9238                         break;
9239                 }
9240
9241                 if (chan == 1 || chan == 6 || chan == 11)
9242                         cand = chan;
9243         }
9244
9245         if (cand) {
9246                 wpa_dbg(wpa_s, MSG_DEBUG,
9247                         "P2P: Update Listen channel to %u based on operating channel",
9248                         cand);
9249                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
9250         }
9251 }
9252
9253
9254 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9255 {
9256         struct wpa_used_freq_data *freqs;
9257         unsigned int num = wpa_s->num_multichan_concurrent;
9258
9259         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9260                 return;
9261
9262         /*
9263          * If possible, optimize the Listen channel to be a channel that is
9264          * already used by one of the other interfaces.
9265          */
9266         if (!wpa_s->conf->p2p_optimize_listen_chan)
9267                 return;
9268
9269         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
9270                 return;
9271
9272         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9273         if (!freqs)
9274                 return;
9275
9276         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9277
9278         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
9279         os_free(freqs);
9280 }
9281
9282
9283 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9284 {
9285         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9286                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9287                         "the management interface is being removed");
9288                 wpas_p2p_deinit_global(wpa_s->global);
9289         }
9290 }
9291
9292
9293 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9294 {
9295         if (wpa_s->ap_iface->bss)
9296                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9297         wpas_p2p_group_deinit(wpa_s);
9298 }