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
 195         /* Use the wpa_s used to control the P2P Device operation */
 196         wpa_s = wpa_s->global->p2p_init_wpa_s;
 197
 198         if (wpa_s->conf->p2p_ignore_shared_freq &&
 199             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 200             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 201                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 202                            freq);
 203                 freq = 0;
 204         }
 205         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 206 }
 207
 208
 209 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 210                                       struct wpa_scan_results *scan_res)
 211 {
 212         size_t i;
 213
 214         if (wpa_s->p2p_scan_work) {
 215                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 216                 wpa_s->p2p_scan_work = NULL;
 217                 radio_work_done(work);
 218         }
 219
 220         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 221                 return;
 222
 223         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 224                    (int) scan_res->num);
 225
 226         for (i = 0; i < scan_res->num; i++) {
 227                 struct wpa_scan_res *bss = scan_res->res[i];
 228                 struct os_reltime time_tmp_age, entry_ts;
 229                 const u8 *ies;
 230                 size_t ies_len;
 231
 232                 time_tmp_age.sec = bss->age / 1000;
 233                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 234                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 235
 236                 ies = (const u8 *) (bss + 1);
 237                 ies_len = bss->ie_len;
 238                 if (bss->beacon_ie_len > 0 &&
 239                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 240                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 241                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 242                                    MACSTR, MAC2STR(bss->bssid));
 243                         ies = ies + ies_len;
 244                         ies_len = bss->beacon_ie_len;
 245                 }
 246
 247
 248                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 249                                          bss->freq, &entry_ts, bss->level,
 250                                          ies, ies_len) > 0)
 251                         break;
 252         }
 253
 254         p2p_scan_res_handled(wpa_s->global->p2p);
 255 }
 256
 257
 258 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 259 {
 260         struct wpa_supplicant *wpa_s = work->wpa_s;
 261         struct wpa_driver_scan_params *params = work->ctx;
 262         int ret;
 263
 264         if (deinit) {
 265                 if (!work->started) {
 266                         wpa_scan_free_params(params);
 267                         return;
 268                 }
 269
 270                 wpa_s->p2p_scan_work = NULL;
 271                 return;
 272         }
 273
 274         ret = wpa_drv_scan(wpa_s, params);
 275         wpa_scan_free_params(params);
 276         work->ctx = NULL;
 277         if (ret) {
 278                 radio_work_done(work);
 279                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 280                 return;
 281         }
 282
 283         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 284         os_get_reltime(&wpa_s->scan_trigger_time);
 285         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 286         wpa_s->own_scan_requested = 1;
 287         wpa_s->p2p_scan_work = work;
 288 }
 289
 290
 291 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 292                                           int freq)
 293 {
 294         if (wpa_s->global->p2p_24ghz_social_channels &&
 295             (freq == 2412 || freq == 2437 || freq == 2462)) {
 296                 /*
 297                  * Search all social channels regardless of whether these have
 298                  * been disabled for P2P operating channel use to avoid missing
 299                  * peers.
 300                  */
 301                 return 1;
 302         }
 303         return p2p_supported_freq(wpa_s->global->p2p, freq);
 304 }
 305
 306
 307 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 308                          unsigned int num_req_dev_types,
 309                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 310 {
 311         struct wpa_supplicant *wpa_s = ctx;
 312         struct wpa_driver_scan_params *params = NULL;
 313         struct wpabuf *wps_ie, *ies;
 314         unsigned int num_channels = 0;
 315         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 316         size_t ielen;
 317         u8 *n, i;
 318
 319         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 320                 return -1;
 321
 322         if (wpa_s->p2p_scan_work) {
 323                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 324                 return -1;
 325         }
 326
 327         params = os_zalloc(sizeof(*params));
 328         if (params == NULL)
 329                 return -1;
 330
 331         /* P2P Wildcard SSID */
 332         params->num_ssids = 1;
 333         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 334         if (n == NULL)
 335                 goto fail;
 336         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 337         params->ssids[0].ssid = n;
 338         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 339
 340         wpa_s->wps->dev.p2p = 1;
 341         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 342                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 343                                         num_req_dev_types, req_dev_types);
 344         if (wps_ie == NULL)
 345                 goto fail;
 346
 347         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 348         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 349         if (ies == NULL) {
 350                 wpabuf_free(wps_ie);
 351                 goto fail;
 352         }
 353         wpabuf_put_buf(ies, wps_ie);
 354         wpabuf_free(wps_ie);
 355
 356         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 357
 358         params->p2p_probe = 1;
 359         n = os_malloc(wpabuf_len(ies));
 360         if (n == NULL) {
 361                 wpabuf_free(ies);
 362                 goto fail;
 363         }
 364         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 365         params->extra_ies = n;
 366         params->extra_ies_len = wpabuf_len(ies);
 367         wpabuf_free(ies);
 368
 369         switch (type) {
 370         case P2P_SCAN_SOCIAL:
 371                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 372                                           sizeof(int));
 373                 if (params->freqs == NULL)
 374                         goto fail;
 375                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 376                         if (wpas_p2p_search_social_channel(
 377                                     wpa_s, social_channels_freq[i]))
 378                                 params->freqs[num_channels++] =
 379                                         social_channels_freq[i];
 380                 }
 381                 params->freqs[num_channels++] = 0;
 382                 break;
 383         case P2P_SCAN_FULL:
 384                 break;
 385         case P2P_SCAN_SPECIFIC:
 386                 params->freqs = os_calloc(2, sizeof(int));
 387                 if (params->freqs == NULL)
 388                         goto fail;
 389                 params->freqs[0] = freq;
 390                 params->freqs[1] = 0;
 391                 break;
 392         case P2P_SCAN_SOCIAL_PLUS_ONE:
 393                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 394                                           sizeof(int));
 395                 if (params->freqs == NULL)
 396                         goto fail;
 397                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 398                         if (wpas_p2p_search_social_channel(
 399                                     wpa_s, social_channels_freq[i]))
 400                                 params->freqs[num_channels++] =
 401                                         social_channels_freq[i];
 402                 }
 403                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 404                         params->freqs[num_channels++] = freq;
 405                 params->freqs[num_channels++] = 0;
 406                 break;
 407         }
 408
 409         radio_remove_works(wpa_s, "p2p-scan", 0);
 410         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 411                            params) < 0)
 412                 goto fail;
 413         return 0;
 414
 415 fail:
 416         wpa_scan_free_params(params);
 417         return -1;
 418 }
 419
 420
 421 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 422 {
 423         switch (p2p_group_interface) {
 424         case P2P_GROUP_INTERFACE_PENDING:
 425                 return WPA_IF_P2P_GROUP;
 426         case P2P_GROUP_INTERFACE_GO:
 427                 return WPA_IF_P2P_GO;
 428         case P2P_GROUP_INTERFACE_CLIENT:
 429                 return WPA_IF_P2P_CLIENT;
 430         }
 431
 432         return WPA_IF_P2P_GROUP;
 433 }
 434
 435
 436 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 437                                                   const u8 *ssid,
 438                                                   size_t ssid_len, int *go)
 439 {
 440         struct wpa_ssid *s;
 441
 442         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 443                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 444                         if (s->disabled != 0 || !s->p2p_group ||
 445                             s->ssid_len != ssid_len ||
 446                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 447                                 continue;
 448                         if (s->mode == WPAS_MODE_P2P_GO &&
 449                             s != wpa_s->current_ssid)
 450                                 continue;
 451                         if (go)
 452                                 *go = s->mode == WPAS_MODE_P2P_GO;
 453                         return wpa_s;
 454                 }
 455         }
 456
 457         return NULL;
 458 }
 459
 460
 461 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 462 {
 463         struct wpa_supplicant *wpa_s = eloop_ctx;
 464         wpa_printf(MSG_DEBUG,
 465                    "P2P: Complete previously requested removal of %s",
 466                    wpa_s->ifname);
 467         wpas_p2p_disconnect(wpa_s);
 468 }
 469
 470
 471 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 472                                       struct wpa_supplicant *calling_wpa_s)
 473 {
 474         if (calling_wpa_s == wpa_s && wpa_s &&
 475             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 476                 /*
 477                  * The calling wpa_s instance is going to be removed. Do that
 478                  * from an eloop callback to keep the instance available until
 479                  * the caller has returned. This my be needed, e.g., to provide
 480                  * control interface responses on the per-interface socket.
 481                  */
 482                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 483                                            wpa_s, NULL) < 0)
 484                         return -1;
 485                 return 0;
 486         }
 487
 488         return wpas_p2p_disconnect(wpa_s);
 489 }
 490
 491
 492 /* Determine total number of clients in active groups where we are the GO */
 493 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 494 {
 495         unsigned int count = 0;
 496         struct wpa_ssid *s;
 497
 498         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 499                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 500                         wpa_printf(MSG_DEBUG,
 501                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 502                                    wpa_s, s, s->disabled, s->p2p_group,
 503                                    s->mode);
 504                         if (!s->disabled && s->p2p_group &&
 505                             s->mode == WPAS_MODE_P2P_GO) {
 506                                 count += p2p_get_group_num_members(
 507                                         wpa_s->p2p_group);
 508                         }
 509                 }
 510         }
 511
 512         return count;
 513 }
 514
 515
 516 /* Find an interface for a P2P group where we are the GO */
 517 static struct wpa_supplicant *
 518 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 519 {
 520         struct wpa_supplicant *save = NULL;
 521         struct wpa_ssid *s;
 522
 523         if (!wpa_s)
 524                 return NULL;
 525
 526         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 527                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 528                         if (s->disabled || !s->p2p_group ||
 529                             s->mode != WPAS_MODE_P2P_GO)
 530                                 continue;
 531
 532                         /* Prefer a group with connected clients */
 533                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 534                                 return wpa_s;
 535                         save = wpa_s;
 536                 }
 537         }
 538
 539         /* No group with connected clients, so pick the one without (if any) */
 540         return save;
 541 }
 542
 543
 544 /* Find an active P2P group where we are the GO */
 545 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 546                                                 u8 *bssid)
 547 {
 548         struct wpa_ssid *s, *empty = NULL;
 549
 550         if (!wpa_s)
 551                 return 0;
 552
 553         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 554                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 555                         if (s->disabled || !s->p2p_group ||
 556                             s->mode != WPAS_MODE_P2P_GO)
 557                                 continue;
 558
 559                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 560                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 561                                 return s;
 562                         empty = s;
 563                 }
 564         }
 565
 566         return empty;
 567 }
 568
 569
 570 /* Find a persistent group where we are the GO */
 571 static struct wpa_ssid *
 572 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 573 {
 574         struct wpa_ssid *s;
 575
 576         for (s = wpa_s->conf->ssid; s; s = s->next) {
 577                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 578                         return s;
 579         }
 580
 581         return NULL;
 582 }
 583
 584
 585 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 586 {
 587         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 588         struct wpa_ssid *s;
 589         u8 conncap = P2PS_SETUP_NONE;
 590         unsigned int owned_members = 0;
 591         unsigned int owner = 0;
 592         unsigned int client = 0;
 593         struct wpa_supplicant *go_wpa_s;
 594         struct wpa_ssid *persistent_go;
 595         int p2p_no_group_iface;
 596
 597         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 598
 599         /*
 600          * For non-concurrent capable devices:
 601          * If persistent_go, then no new.
 602          * If GO, then no client.
 603          * If client, then no GO.
 604          */
 605         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 606         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 607         p2p_no_group_iface = wpa_s->conf->p2p_no_group_iface;
 608
 609         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 610                    go_wpa_s, persistent_go);
 611
 612         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 613              tmp_wpa_s = tmp_wpa_s->next) {
 614                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 615                         wpa_printf(MSG_DEBUG,
 616                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 617                                    tmp_wpa_s, s, s->disabled,
 618                                    s->p2p_group, s->mode);
 619                         if (!s->disabled && s->p2p_group) {
 620                                 if (s->mode == WPAS_MODE_P2P_GO) {
 621                                         owned_members +=
 622                                                 p2p_get_group_num_members(
 623                                                         tmp_wpa_s->p2p_group);
 624                                         owner++;
 625                                 } else
 626                                         client++;
 627                         }
 628                 }
 629         }
 630
 631         /* If not concurrent, restrict our choices */
 632         if (p2p_no_group_iface) {
 633                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 634
 635                 if (client)
 636                         return P2PS_SETUP_NONE;
 637
 638                 if (go_wpa_s) {
 639                         if (role == P2PS_SETUP_CLIENT ||
 640                             incoming == P2PS_SETUP_GROUP_OWNER ||
 641                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 642                                 return P2PS_SETUP_NONE;
 643
 644                         return P2PS_SETUP_GROUP_OWNER;
 645                 }
 646
 647                 if (persistent_go) {
 648                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 649                                 if (!incoming)
 650                                         return P2PS_SETUP_GROUP_OWNER |
 651                                                 P2PS_SETUP_CLIENT;
 652                                 if (incoming == P2PS_SETUP_NEW) {
 653                                         u8 r;
 654
 655                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 656                                             (r & 1))
 657                                                 return P2PS_SETUP_CLIENT;
 658                                         return P2PS_SETUP_GROUP_OWNER;
 659                                 }
 660                         }
 661                 }
 662         }
 663
 664         /* If a required role has been specified, handle it here */
 665         if (role && role != P2PS_SETUP_NEW) {
 666                 switch (incoming) {
 667                 case P2PS_SETUP_NONE:
 668                 case P2PS_SETUP_NEW:
 669                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 670                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 671                         conncap = role;
 672                         goto grp_owner;
 673
 674                 case P2PS_SETUP_GROUP_OWNER:
 675                         /*
 676                          * Must be a complimentary role - cannot be a client to
 677                          * more than one peer.
 678                          */
 679                         if (incoming == role || client)
 680                                 return P2PS_SETUP_NONE;
 681
 682                         return P2PS_SETUP_CLIENT;
 683
 684                 case P2PS_SETUP_CLIENT:
 685                         /* Must be a complimentary role */
 686                         if (incoming != role) {
 687                                 conncap = P2PS_SETUP_GROUP_OWNER;
 688                                 goto grp_owner;
 689                         }
 690
 691                 default:
 692                         return P2PS_SETUP_NONE;
 693                 }
 694         }
 695
 696         /*
 697          * For now, we only will support ownership of one group, and being a
 698          * client of one group. Therefore, if we have either an existing GO
 699          * group, or an existing client group, we will not do a new GO
 700          * negotiation, but rather try to re-use the existing groups.
 701          */
 702         switch (incoming) {
 703         case P2PS_SETUP_NONE:
 704         case P2PS_SETUP_NEW:
 705                 if (client)
 706                         conncap = P2PS_SETUP_GROUP_OWNER;
 707                 else if (!owned_members)
 708                         conncap = P2PS_SETUP_NEW;
 709                 else if (incoming == P2PS_SETUP_NONE)
 710                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 711                 else
 712                         conncap = P2PS_SETUP_CLIENT;
 713                 break;
 714
 715         case P2PS_SETUP_CLIENT:
 716                 conncap = P2PS_SETUP_GROUP_OWNER;
 717                 break;
 718
 719         case P2PS_SETUP_GROUP_OWNER:
 720                 if (!client)
 721                         conncap = P2PS_SETUP_CLIENT;
 722                 break;
 723
 724         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 725         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 726                 if (client)
 727                         conncap = P2PS_SETUP_GROUP_OWNER;
 728                 else {
 729                         u8 r;
 730
 731                         if (os_get_random(&r, sizeof(r)) < 0 ||
 732                             (r & 1))
 733                                 conncap = P2PS_SETUP_CLIENT;
 734                         else
 735                                 conncap = P2PS_SETUP_GROUP_OWNER;
 736                 }
 737                 break;
 738
 739         default:
 740                 return P2PS_SETUP_NONE;
 741         }
 742
 743 grp_owner:
 744         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 745             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 746                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 747                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 748                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 749                            owner, owned_members, conncap);
 750
 751                 s = wpas_p2p_get_persistent_go(wpa_s);
 752
 753                 if (!s && !owner && p2p_no_group_iface) {
 754                         p2p_set_intended_addr(wpa_s->global->p2p,
 755                                               wpa_s->own_addr);
 756                 } else if (!s && !owner) {
 757                         if (wpas_p2p_add_group_interface(wpa_s,
 758                                                          WPA_IF_P2P_GO) < 0) {
 759                                 wpa_printf(MSG_ERROR,
 760                                            "P2P: Failed to allocate a new interface for the group");
 761                                 return P2PS_SETUP_NONE;
 762                         }
 763                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 764                         p2p_set_intended_addr(wpa_s->global->p2p,
 765                                               wpa_s->pending_interface_addr);
 766                 }
 767         }
 768
 769         return conncap;
 770 }
 771
 772
 773 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 774                                  enum p2p_group_removal_reason removal_reason)
 775 {
 776         struct wpa_ssid *ssid;
 777         char *gtype;
 778         const char *reason;
 779
 780         ssid = wpa_s->current_ssid;
 781         if (ssid == NULL) {
 782                 /*
 783                  * The current SSID was not known, but there may still be a
 784                  * pending P2P group interface waiting for provisioning or a
 785                  * P2P group that is trying to reconnect.
 786                  */
 787                 ssid = wpa_s->conf->ssid;
 788                 while (ssid) {
 789                         if (ssid->p2p_group && ssid->disabled != 2)
 790                                 break;
 791                         ssid = ssid->next;
 792                 }
 793                 if (ssid == NULL &&
 794                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 795                 {
 796                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 797                                    "not found");
 798                         return -1;
 799                 }
 800         }
 801         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 802                 gtype = "GO";
 803         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 804                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 805                 wpa_s->reassociate = 0;
 806                 wpa_s->disconnected = 1;
 807                 gtype = "client";
 808         } else
 809                 gtype = "GO";
 810
 811         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 812                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 813
 814         if (os_strcmp(gtype, "client") == 0) {
 815                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 816                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 817                                                 wpa_s, NULL)) {
 818                         wpa_printf(MSG_DEBUG,
 819                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 820                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 821                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 822                                              wpa_s, NULL);
 823                 }
 824         }
 825
 826         if (wpa_s->cross_connect_in_use) {
 827                 wpa_s->cross_connect_in_use = 0;
 828                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 829                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 830                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 831         }
 832         switch (removal_reason) {
 833         case P2P_GROUP_REMOVAL_REQUESTED:
 834                 reason = " reason=REQUESTED";
 835                 break;
 836         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 837                 reason = " reason=FORMATION_FAILED";
 838                 break;
 839         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 840                 reason = " reason=IDLE";
 841                 break;
 842         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 843                 reason = " reason=UNAVAILABLE";
 844                 break;
 845         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 846                 reason = " reason=GO_ENDING_SESSION";
 847                 break;
 848         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 849                 reason = " reason=PSK_FAILURE";
 850                 break;
 851         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 852                 reason = " reason=FREQ_CONFLICT";
 853                 break;
 854         default:
 855                 reason = "";
 856                 break;
 857         }
 858         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 859                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 860                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 861                                wpa_s->ifname, gtype, reason);
 862         }
 863
 864         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 865                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 866         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 867                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 868         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 869                                  wpa_s->parent, NULL) > 0) {
 870                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 871                            "timeout");
 872                 wpa_s->p2p_in_provisioning = 0;
 873         }
 874
 875         wpa_s->p2p_in_invitation = 0;
 876
 877         /*
 878          * Make sure wait for the first client does not remain active after the
 879          * group has been removed.
 880          */
 881         wpa_s->global->p2p_go_wait_client.sec = 0;
 882
 883         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 884                 struct wpa_global *global;
 885                 char *ifname;
 886                 enum wpa_driver_if_type type;
 887                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 888                         wpa_s->ifname);
 889                 global = wpa_s->global;
 890                 ifname = os_strdup(wpa_s->ifname);
 891                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 892                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 893                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 894                 wpa_s = global->ifaces;
 895                 if (wpa_s && ifname)
 896                         wpa_drv_if_remove(wpa_s, type, ifname);
 897                 os_free(ifname);
 898                 return 1;
 899         }
 900
 901         if (!wpa_s->p2p_go_group_formation_completed) {
 902                 wpa_s->global->p2p_group_formation = NULL;
 903                 wpa_s->p2p_in_provisioning = 0;
 904         }
 905
 906         wpa_s->show_group_started = 0;
 907         os_free(wpa_s->go_params);
 908         wpa_s->go_params = NULL;
 909
 910         os_free(wpa_s->p2p_group_common_freqs);
 911         wpa_s->p2p_group_common_freqs = NULL;
 912         wpa_s->p2p_group_common_freqs_num = 0;
 913
 914         wpa_s->waiting_presence_resp = 0;
 915
 916         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 917         if (ssid && (ssid->p2p_group ||
 918                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 919                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 920                 int id = ssid->id;
 921                 if (ssid == wpa_s->current_ssid) {
 922                         wpa_sm_set_config(wpa_s->wpa, NULL);
 923                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 924                         wpa_s->current_ssid = NULL;
 925                 }
 926                 /*
 927                  * Networks objects created during any P2P activities are not
 928                  * exposed out as they might/will confuse certain non-P2P aware
 929                  * applications since these network objects won't behave like
 930                  * regular ones.
 931                  *
 932                  * Likewise, we don't send out network removed signals for such
 933                  * network objects.
 934                  */
 935                 wpa_config_remove_network(wpa_s->conf, id);
 936                 wpa_supplicant_clear_status(wpa_s);
 937                 wpa_supplicant_cancel_sched_scan(wpa_s);
 938         } else {
 939                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 940                            "found");
 941         }
 942         if (wpa_s->ap_iface)
 943                 wpa_supplicant_ap_deinit(wpa_s);
 944         else
 945                 wpa_drv_deinit_p2p_cli(wpa_s);
 946
 947         return 0;
 948 }
 949
 950
 951 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 952                                      u8 *go_dev_addr,
 953                                      const u8 *ssid, size_t ssid_len)
 954 {
 955         struct wpa_bss *bss;
 956         const u8 *bssid;
 957         struct wpabuf *p2p;
 958         u8 group_capab;
 959         const u8 *addr;
 960
 961         if (wpa_s->go_params)
 962                 bssid = wpa_s->go_params->peer_interface_addr;
 963         else
 964                 bssid = wpa_s->bssid;
 965
 966         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 967         if (bss == NULL && wpa_s->go_params &&
 968             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 969                 bss = wpa_bss_get_p2p_dev_addr(
 970                         wpa_s, wpa_s->go_params->peer_device_addr);
 971         if (bss == NULL) {
 972                 u8 iface_addr[ETH_ALEN];
 973                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 974                                            iface_addr) == 0)
 975                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 976         }
 977         if (bss == NULL) {
 978                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 979                            "group is persistent - BSS " MACSTR " not found",
 980                            MAC2STR(bssid));
 981                 return 0;
 982         }
 983
 984         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 985         if (p2p == NULL)
 986                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 987                                                          P2P_IE_VENDOR_TYPE);
 988         if (p2p == NULL) {
 989                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 990                            "group is persistent - BSS " MACSTR
 991                            " did not include P2P IE", MAC2STR(bssid));
 992                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 993                             (u8 *) (bss + 1), bss->ie_len);
 994                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 995                             ((u8 *) bss + 1) + bss->ie_len,
 996                             bss->beacon_ie_len);
 997                 return 0;
 998         }
 999
1000         group_capab = p2p_get_group_capab(p2p);
1001         addr = p2p_get_go_dev_addr(p2p);
1002         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1003                    "group_capab=0x%x", group_capab);
1004         if (addr) {
1005                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1006                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1007                            MAC2STR(addr));
1008         } else
1009                 os_memset(go_dev_addr, 0, ETH_ALEN);
1010         wpabuf_free(p2p);
1011
1012         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1013                    "go_dev_addr=" MACSTR,
1014                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1015
1016         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1017 }
1018
1019
1020 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1021                                            struct wpa_ssid *ssid,
1022                                            const u8 *go_dev_addr)
1023 {
1024         struct wpa_ssid *s;
1025         int changed = 0;
1026
1027         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1028                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1029         for (s = wpa_s->conf->ssid; s; s = s->next) {
1030                 if (s->disabled == 2 &&
1031                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1032                     s->ssid_len == ssid->ssid_len &&
1033                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1034                         break;
1035         }
1036
1037         if (s) {
1038                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1039                            "entry");
1040                 if (ssid->passphrase && !s->passphrase)
1041                         changed = 1;
1042                 else if (ssid->passphrase && s->passphrase &&
1043                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1044                         changed = 1;
1045         } else {
1046                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1047                            "entry");
1048                 changed = 1;
1049                 s = wpa_config_add_network(wpa_s->conf);
1050                 if (s == NULL)
1051                         return -1;
1052
1053                 /*
1054                  * Instead of network_added we emit persistent_group_added
1055                  * notification. Also to keep the defense checks in
1056                  * persistent_group obj registration method, we set the
1057                  * relevant flags in s to designate it as a persistent group.
1058                  */
1059                 s->p2p_group = 1;
1060                 s->p2p_persistent_group = 1;
1061                 wpas_notify_persistent_group_added(wpa_s, s);
1062                 wpa_config_set_network_defaults(s);
1063         }
1064
1065         s->p2p_group = 1;
1066         s->p2p_persistent_group = 1;
1067         s->disabled = 2;
1068         s->bssid_set = 1;
1069         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1070         s->mode = ssid->mode;
1071         s->auth_alg = WPA_AUTH_ALG_OPEN;
1072         s->key_mgmt = WPA_KEY_MGMT_PSK;
1073         s->proto = WPA_PROTO_RSN;
1074         s->pairwise_cipher = WPA_CIPHER_CCMP;
1075         s->export_keys = 1;
1076         if (ssid->passphrase) {
1077                 os_free(s->passphrase);
1078                 s->passphrase = os_strdup(ssid->passphrase);
1079         }
1080         if (ssid->psk_set) {
1081                 s->psk_set = 1;
1082                 os_memcpy(s->psk, ssid->psk, 32);
1083         }
1084         if (s->passphrase && !s->psk_set)
1085                 wpa_config_update_psk(s);
1086         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1087                 os_free(s->ssid);
1088                 s->ssid = os_malloc(ssid->ssid_len);
1089         }
1090         if (s->ssid) {
1091                 s->ssid_len = ssid->ssid_len;
1092                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1093         }
1094         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1095                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1096                 wpa_s->global->add_psk = NULL;
1097                 changed = 1;
1098         }
1099
1100         if (changed && wpa_s->conf->update_config &&
1101             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1102                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1103         }
1104
1105         return s->id;
1106 }
1107
1108
1109 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1110                                                  const u8 *addr)
1111 {
1112         struct wpa_ssid *ssid, *s;
1113         u8 *n;
1114         size_t i;
1115         int found = 0;
1116         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1117
1118         ssid = wpa_s->current_ssid;
1119         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1120             !ssid->p2p_persistent_group)
1121                 return;
1122
1123         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1124                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1125                         continue;
1126
1127                 if (s->ssid_len == ssid->ssid_len &&
1128                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1129                         break;
1130         }
1131
1132         if (s == NULL)
1133                 return;
1134
1135         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1136                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1137                               ETH_ALEN) != 0)
1138                         continue;
1139
1140                 if (i == s->num_p2p_clients - 1)
1141                         return; /* already the most recent entry */
1142
1143                 /* move the entry to mark it most recent */
1144                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1145                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1146                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1147                 os_memcpy(s->p2p_client_list +
1148                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1149                           ETH_ALEN);
1150                 os_memset(s->p2p_client_list +
1151                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1152                           0xff, ETH_ALEN);
1153                 found = 1;
1154                 break;
1155         }
1156
1157         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1158                 n = os_realloc_array(s->p2p_client_list,
1159                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1160                 if (n == NULL)
1161                         return;
1162                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1163                           ETH_ALEN);
1164                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1165                           0xff, ETH_ALEN);
1166                 s->p2p_client_list = n;
1167                 s->num_p2p_clients++;
1168         } else if (!found && s->p2p_client_list) {
1169                 /* Not enough room for an additional entry - drop the oldest
1170                  * entry */
1171                 os_memmove(s->p2p_client_list,
1172                            s->p2p_client_list + 2 * ETH_ALEN,
1173                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1174                 os_memcpy(s->p2p_client_list +
1175                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1176                           addr, ETH_ALEN);
1177                 os_memset(s->p2p_client_list +
1178                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1179                           0xff, ETH_ALEN);
1180         }
1181
1182         if (p2p_wpa_s->conf->update_config &&
1183             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1184                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1185 }
1186
1187
1188 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1189                                    int go, struct wpa_ssid *ssid, int freq,
1190                                    const u8 *psk, const char *passphrase,
1191                                    const u8 *go_dev_addr, int persistent,
1192                                    const char *extra)
1193 {
1194         const char *ssid_txt;
1195         char psk_txt[65];
1196
1197         if (psk)
1198                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1199         else
1200                 psk_txt[0] = '\0';
1201
1202         if (ssid)
1203                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1204         else
1205                 ssid_txt = "";
1206
1207         if (passphrase && passphrase[0] == '\0')
1208                 passphrase = NULL;
1209
1210         /*
1211          * Include PSK/passphrase only in the control interface message and
1212          * leave it out from the debug log entry.
1213          */
1214         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1215                             P2P_EVENT_GROUP_STARTED
1216                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1217                             MACSTR "%s%s",
1218                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1219                             psk ? " psk=" : "", psk_txt,
1220                             passphrase ? " passphrase=\"" : "",
1221                             passphrase ? passphrase : "",
1222                             passphrase ? "\"" : "",
1223                             MAC2STR(go_dev_addr),
1224                             persistent ? " [PERSISTENT]" : "", extra);
1225         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1226                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1227                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1228                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1229                    extra);
1230 }
1231
1232
1233 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1234                                            int success)
1235 {
1236         struct wpa_ssid *ssid;
1237         int client;
1238         int persistent;
1239         u8 go_dev_addr[ETH_ALEN];
1240         int network_id = -1;
1241
1242         /*
1243          * This callback is likely called for the main interface. Update wpa_s
1244          * to use the group interface if a new interface was created for the
1245          * group.
1246          */
1247         if (wpa_s->global->p2p_group_formation)
1248                 wpa_s = wpa_s->global->p2p_group_formation;
1249         if (wpa_s->p2p_go_group_formation_completed) {
1250                 wpa_s->global->p2p_group_formation = NULL;
1251                 wpa_s->p2p_in_provisioning = 0;
1252         }
1253         wpa_s->p2p_in_invitation = 0;
1254         wpa_s->group_formation_reported = 1;
1255
1256         if (!success) {
1257                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1258                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1259                 wpas_p2p_group_delete(wpa_s,
1260                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1261                 return;
1262         }
1263
1264         wpa_msg_global(wpa_s->parent, MSG_INFO,
1265                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1266
1267         ssid = wpa_s->current_ssid;
1268         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1269                 ssid->mode = WPAS_MODE_P2P_GO;
1270                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1271                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1272         }
1273
1274         persistent = 0;
1275         if (ssid) {
1276                 client = ssid->mode == WPAS_MODE_INFRA;
1277                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1278                         persistent = ssid->p2p_persistent_group;
1279                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1280                                   ETH_ALEN);
1281                 } else
1282                         persistent = wpas_p2p_persistent_group(wpa_s,
1283                                                                go_dev_addr,
1284                                                                ssid->ssid,
1285                                                                ssid->ssid_len);
1286         } else {
1287                 client = wpa_s->p2p_group_interface ==
1288                         P2P_GROUP_INTERFACE_CLIENT;
1289                 os_memset(go_dev_addr, 0, ETH_ALEN);
1290         }
1291
1292         wpa_s->show_group_started = 0;
1293         if (client) {
1294                 /*
1295                  * Indicate event only after successfully completed 4-way
1296                  * handshake, i.e., when the interface is ready for data
1297                  * packets.
1298                  */
1299                 wpa_s->show_group_started = 1;
1300         } else {
1301                 wpas_p2p_group_started(wpa_s, 1, ssid,
1302                                        ssid ? ssid->frequency : 0,
1303                                        ssid && ssid->passphrase == NULL &&
1304                                        ssid->psk_set ? ssid->psk : NULL,
1305                                        ssid ? ssid->passphrase : NULL,
1306                                        go_dev_addr, persistent, "");
1307                 wpas_p2p_cross_connect_setup(wpa_s);
1308                 wpas_p2p_set_group_idle_timeout(wpa_s);
1309         }
1310
1311         if (persistent)
1312                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1313                                                              ssid, go_dev_addr);
1314         else {
1315                 os_free(wpa_s->global->add_psk);
1316                 wpa_s->global->add_psk = NULL;
1317         }
1318         if (network_id < 0 && ssid)
1319                 network_id = ssid->id;
1320         if (!client) {
1321                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1322                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1323         }
1324 }
1325
1326
1327 struct send_action_work {
1328         unsigned int freq;
1329         u8 dst[ETH_ALEN];
1330         u8 src[ETH_ALEN];
1331         u8 bssid[ETH_ALEN];
1332         size_t len;
1333         unsigned int wait_time;
1334         u8 buf[0];
1335 };
1336
1337
1338 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1339                                               void *timeout_ctx)
1340 {
1341         struct wpa_supplicant *wpa_s = eloop_ctx;
1342
1343         if (!wpa_s->p2p_send_action_work)
1344                 return;
1345
1346         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1347         os_free(wpa_s->p2p_send_action_work->ctx);
1348         radio_work_done(wpa_s->p2p_send_action_work);
1349         wpa_s->p2p_send_action_work = NULL;
1350 }
1351
1352
1353 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1354 {
1355         if (wpa_s->p2p_send_action_work) {
1356                 struct send_action_work *awork;
1357                 awork = wpa_s->p2p_send_action_work->ctx;
1358                 if (awork->wait_time == 0) {
1359                         os_free(awork);
1360                         radio_work_done(wpa_s->p2p_send_action_work);
1361                         wpa_s->p2p_send_action_work = NULL;
1362                 } else {
1363                         /*
1364                          * In theory, this should not be needed, but number of
1365                          * places in the P2P code is still using non-zero wait
1366                          * time for the last Action frame in the sequence and
1367                          * some of these do not call send_action_done().
1368                          */
1369                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1370                                              wpa_s, NULL);
1371                         eloop_register_timeout(
1372                                 0, awork->wait_time * 1000,
1373                                 wpas_p2p_send_action_work_timeout,
1374                                 wpa_s, NULL);
1375                 }
1376         }
1377 }
1378
1379
1380 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1381                                            unsigned int freq,
1382                                            const u8 *dst, const u8 *src,
1383                                            const u8 *bssid,
1384                                            const u8 *data, size_t data_len,
1385                                            enum offchannel_send_action_result
1386                                            result)
1387 {
1388         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1389
1390         wpas_p2p_action_tx_clear(wpa_s);
1391
1392         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1393                 return;
1394
1395         switch (result) {
1396         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1397                 res = P2P_SEND_ACTION_SUCCESS;
1398                 break;
1399         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1400                 res = P2P_SEND_ACTION_NO_ACK;
1401                 break;
1402         case OFFCHANNEL_SEND_ACTION_FAILED:
1403                 res = P2P_SEND_ACTION_FAILED;
1404                 break;
1405         }
1406
1407         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1408
1409         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1410             wpa_s->pending_pd_before_join &&
1411             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1412              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1413             wpa_s->p2p_fallback_to_go_neg) {
1414                 wpa_s->pending_pd_before_join = 0;
1415                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1416                         "during p2p_connect-auto");
1417                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1418                                P2P_EVENT_FALLBACK_TO_GO_NEG
1419                                "reason=no-ACK-to-PD-Req");
1420                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1421                 return;
1422         }
1423 }
1424
1425
1426 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1427 {
1428         struct wpa_supplicant *wpa_s = work->wpa_s;
1429         struct send_action_work *awork = work->ctx;
1430
1431         if (deinit) {
1432                 if (work->started) {
1433                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1434                                              wpa_s, NULL);
1435                         wpa_s->p2p_send_action_work = NULL;
1436                         offchannel_send_action_done(wpa_s);
1437                 }
1438                 os_free(awork);
1439                 return;
1440         }
1441
1442         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1443                                    awork->bssid, awork->buf, awork->len,
1444                                    awork->wait_time,
1445                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1446                 os_free(awork);
1447                 radio_work_done(work);
1448                 return;
1449         }
1450         wpa_s->p2p_send_action_work = work;
1451 }
1452
1453
1454 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1455                                  unsigned int freq, const u8 *dst,
1456                                  const u8 *src, const u8 *bssid, const u8 *buf,
1457                                  size_t len, unsigned int wait_time)
1458 {
1459         struct send_action_work *awork;
1460
1461         if (wpa_s->p2p_send_action_work) {
1462                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1463                 return -1;
1464         }
1465
1466         awork = os_zalloc(sizeof(*awork) + len);
1467         if (awork == NULL)
1468                 return -1;
1469
1470         awork->freq = freq;
1471         os_memcpy(awork->dst, dst, ETH_ALEN);
1472         os_memcpy(awork->src, src, ETH_ALEN);
1473         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1474         awork->len = len;
1475         awork->wait_time = wait_time;
1476         os_memcpy(awork->buf, buf, len);
1477
1478         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1479                            wpas_send_action_cb, awork) < 0) {
1480                 os_free(awork);
1481                 return -1;
1482         }
1483
1484         return 0;
1485 }
1486
1487
1488 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1489                             const u8 *src, const u8 *bssid, const u8 *buf,
1490                             size_t len, unsigned int wait_time)
1491 {
1492         struct wpa_supplicant *wpa_s = ctx;
1493         int listen_freq = -1, send_freq = -1;
1494
1495         if (wpa_s->p2p_listen_work)
1496                 listen_freq = wpa_s->p2p_listen_work->freq;
1497         if (wpa_s->p2p_send_action_work)
1498                 send_freq = wpa_s->p2p_send_action_work->freq;
1499         if (listen_freq != (int) freq && send_freq != (int) freq) {
1500                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1501                            listen_freq, send_freq);
1502                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1503                                              len, wait_time);
1504         }
1505
1506         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1507         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1508                                       wait_time,
1509                                       wpas_p2p_send_action_tx_status, 1);
1510 }
1511
1512
1513 static void wpas_send_action_done(void *ctx)
1514 {
1515         struct wpa_supplicant *wpa_s = ctx;
1516
1517         if (wpa_s->p2p_send_action_work) {
1518                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1519                                      wpa_s, NULL);
1520                 os_free(wpa_s->p2p_send_action_work->ctx);
1521                 radio_work_done(wpa_s->p2p_send_action_work);
1522                 wpa_s->p2p_send_action_work = NULL;
1523         }
1524
1525         offchannel_send_action_done(wpa_s);
1526 }
1527
1528
1529 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1530                                     struct p2p_go_neg_results *params)
1531 {
1532         if (wpa_s->go_params == NULL) {
1533                 wpa_s->go_params = os_malloc(sizeof(*params));
1534                 if (wpa_s->go_params == NULL)
1535                         return -1;
1536         }
1537         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1538         return 0;
1539 }
1540
1541
1542 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1543                                     struct p2p_go_neg_results *res)
1544 {
1545         wpa_s->group_formation_reported = 0;
1546         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1547                    " dev_addr " MACSTR " wps_method %d",
1548                    MAC2STR(res->peer_interface_addr),
1549                    MAC2STR(res->peer_device_addr), res->wps_method);
1550         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1551                           res->ssid, res->ssid_len);
1552         wpa_supplicant_ap_deinit(wpa_s);
1553         wpas_copy_go_neg_results(wpa_s, res);
1554         if (res->wps_method == WPS_PBC) {
1555                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1556 #ifdef CONFIG_WPS_NFC
1557         } else if (res->wps_method == WPS_NFC) {
1558                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1559                                    res->peer_interface_addr,
1560                                    wpa_s->parent->p2p_oob_dev_pw,
1561                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1562                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1563                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1564                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1565                                    NULL,
1566                                    NULL, 0, 0);
1567 #endif /* CONFIG_WPS_NFC */
1568         } else {
1569                 u16 dev_pw_id = DEV_PW_DEFAULT;
1570                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1571                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1572                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1573                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1574                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1575                                    wpa_s->p2p_pin, 1, dev_pw_id);
1576         }
1577 }
1578
1579
1580 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1581                                   struct wpa_ssid *ssid)
1582 {
1583         struct wpa_ssid *persistent;
1584         struct psk_list_entry *psk;
1585         struct hostapd_data *hapd;
1586
1587         if (!wpa_s->ap_iface)
1588                 return;
1589
1590         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1591                                              ssid->ssid_len);
1592         if (persistent == NULL)
1593                 return;
1594
1595         hapd = wpa_s->ap_iface->bss[0];
1596
1597         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1598                          list) {
1599                 struct hostapd_wpa_psk *hpsk;
1600
1601                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1602                         MACSTR " psk=%d",
1603                         MAC2STR(psk->addr), psk->p2p);
1604                 hpsk = os_zalloc(sizeof(*hpsk));
1605                 if (hpsk == NULL)
1606                         break;
1607                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1608                 if (psk->p2p)
1609                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1610                 else
1611                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1612                 hpsk->next = hapd->conf->ssid.wpa_psk;
1613                 hapd->conf->ssid.wpa_psk = hpsk;
1614         }
1615 }
1616
1617
1618 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1619 {
1620         unsigned int i;
1621
1622         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1623                 wpa_s->p2p_group_common_freqs_num);
1624
1625         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1626                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1627                         i, wpa_s->p2p_group_common_freqs[i]);
1628 }
1629
1630
1631 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1632                                            struct p2p_go_neg_results *params)
1633 {
1634         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1635
1636         wpa_s->p2p_group_common_freqs_num = 0;
1637         os_free(wpa_s->p2p_group_common_freqs);
1638         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1639         if (!wpa_s->p2p_group_common_freqs)
1640                 return;
1641
1642         for (i = 0; i < len; i++) {
1643                 if (!wpa_s->go_params->freq_list[i])
1644                         break;
1645                 wpa_s->p2p_group_common_freqs[i] =
1646                         wpa_s->go_params->freq_list[i];
1647         }
1648         wpa_s->p2p_group_common_freqs_num = i;
1649 }
1650
1651
1652 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1653 {
1654 #ifndef CONFIG_NO_CONFIG_WRITE
1655         if (wpa_s->parent->conf->update_config &&
1656             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1657                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1658 #endif /* CONFIG_NO_CONFIG_WRITE */
1659 }
1660
1661
1662 static void p2p_go_configured(void *ctx, void *data)
1663 {
1664         struct wpa_supplicant *wpa_s = ctx;
1665         struct p2p_go_neg_results *params = data;
1666         struct wpa_ssid *ssid;
1667         int network_id = -1;
1668
1669         p2p_go_save_group_common_freqs(wpa_s, params);
1670         p2p_go_dump_common_freqs(wpa_s);
1671
1672         ssid = wpa_s->current_ssid;
1673         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1674                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1675                 if (wpa_s->global->p2p_group_formation == wpa_s)
1676                         wpa_s->global->p2p_group_formation = NULL;
1677                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1678                                        params->passphrase[0] == '\0' ?
1679                                        params->psk : NULL,
1680                                        params->passphrase,
1681                                        wpa_s->global->p2p_dev_addr,
1682                                        params->persistent_group, "");
1683                 wpa_s->group_formation_reported = 1;
1684
1685                 if (wpa_s->parent->p2ps_join_addr_valid) {
1686                         wpa_dbg(wpa_s, MSG_DEBUG,
1687                                 "P2PS: Setting default PIN for " MACSTR,
1688                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1689                         wpa_supplicant_ap_wps_pin(wpa_s,
1690                                                   wpa_s->parent->p2ps_join_addr,
1691                                                   "12345670", NULL, 0, 0);
1692                         wpa_s->parent->p2ps_join_addr_valid = 0;
1693                 }
1694
1695                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1696                 if (params->persistent_group) {
1697                         network_id = wpas_p2p_store_persistent_group(
1698                                 wpa_s->parent, ssid,
1699                                 wpa_s->global->p2p_dev_addr);
1700                         wpas_p2p_add_psk_list(wpa_s, ssid);
1701                 }
1702                 if (network_id < 0)
1703                         network_id = ssid->id;
1704                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1705                 wpas_p2p_cross_connect_setup(wpa_s);
1706                 wpas_p2p_set_group_idle_timeout(wpa_s);
1707
1708                 if (wpa_s->p2p_first_connection_timeout) {
1709                         wpa_dbg(wpa_s, MSG_DEBUG,
1710                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1711                                 wpa_s->p2p_first_connection_timeout);
1712                         wpa_s->p2p_go_group_formation_completed = 0;
1713                         wpa_s->global->p2p_group_formation = wpa_s;
1714                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1715                                              wpa_s->parent, NULL);
1716                         eloop_register_timeout(
1717                                 wpa_s->p2p_first_connection_timeout, 0,
1718                                 wpas_p2p_group_formation_timeout,
1719                                 wpa_s->parent, NULL);
1720                 }
1721
1722                 return;
1723         }
1724
1725         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1726         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1727                                               params->peer_interface_addr)) {
1728                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1729                            "filtering");
1730                 return;
1731         }
1732         if (params->wps_method == WPS_PBC) {
1733                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1734                                           params->peer_device_addr);
1735 #ifdef CONFIG_WPS_NFC
1736         } else if (params->wps_method == WPS_NFC) {
1737                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1738                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1739                     !wpa_s->parent->p2p_oob_dev_pw) {
1740                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1741                         return;
1742                 }
1743                 wpas_ap_wps_add_nfc_pw(
1744                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1745                         wpa_s->parent->p2p_oob_dev_pw,
1746                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1747                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1748 #endif /* CONFIG_WPS_NFC */
1749         } else if (wpa_s->p2p_pin[0])
1750                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1751                                           wpa_s->p2p_pin, NULL, 0, 0);
1752         os_free(wpa_s->go_params);
1753         wpa_s->go_params = NULL;
1754 }
1755
1756
1757 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1758                               struct p2p_go_neg_results *params,
1759                               int group_formation)
1760 {
1761         struct wpa_ssid *ssid;
1762
1763         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1764         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1765                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1766                         "results");
1767                 return;
1768         }
1769
1770         ssid = wpa_config_add_network(wpa_s->conf);
1771         if (ssid == NULL) {
1772                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1773                 return;
1774         }
1775
1776         wpa_s->show_group_started = 0;
1777         wpa_s->p2p_go_group_formation_completed = 0;
1778         wpa_s->group_formation_reported = 0;
1779
1780         wpa_config_set_network_defaults(ssid);
1781         ssid->temporary = 1;
1782         ssid->p2p_group = 1;
1783         ssid->p2p_persistent_group = params->persistent_group;
1784         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1785                 WPAS_MODE_P2P_GO;
1786         ssid->frequency = params->freq;
1787         ssid->ht40 = params->ht40;
1788         ssid->vht = params->vht;
1789         ssid->ssid = os_zalloc(params->ssid_len + 1);
1790         if (ssid->ssid) {
1791                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1792                 ssid->ssid_len = params->ssid_len;
1793         }
1794         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1795         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1796         ssid->proto = WPA_PROTO_RSN;
1797         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1798         ssid->group_cipher = WPA_CIPHER_CCMP;
1799         if (params->freq > 56160) {
1800                 /*
1801                  * Enable GCMP instead of CCMP as pairwise_cipher and
1802                  * group_cipher in 60 GHz.
1803                  */
1804                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1805                 ssid->group_cipher = WPA_CIPHER_GCMP;
1806         }
1807         if (os_strlen(params->passphrase) > 0) {
1808                 ssid->passphrase = os_strdup(params->passphrase);
1809                 if (ssid->passphrase == NULL) {
1810                         wpa_msg_global(wpa_s, MSG_ERROR,
1811                                        "P2P: Failed to copy passphrase for GO");
1812                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1813                         return;
1814                 }
1815         } else
1816                 ssid->passphrase = NULL;
1817         ssid->psk_set = params->psk_set;
1818         if (ssid->psk_set)
1819                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1820         else if (ssid->passphrase)
1821                 wpa_config_update_psk(ssid);
1822         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1823
1824         wpa_s->ap_configured_cb = p2p_go_configured;
1825         wpa_s->ap_configured_cb_ctx = wpa_s;
1826         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1827         wpa_s->scan_req = NORMAL_SCAN_REQ;
1828         wpa_s->connect_without_scan = ssid;
1829         wpa_s->reassociate = 1;
1830         wpa_s->disconnected = 0;
1831         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1832                 "start GO)");
1833         wpa_supplicant_req_scan(wpa_s, 0, 0);
1834 }
1835
1836
1837 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1838                                   const struct wpa_supplicant *src)
1839 {
1840         struct wpa_config *d;
1841         const struct wpa_config *s;
1842
1843         d = dst->conf;
1844         s = src->conf;
1845
1846 #define C(n) if (s->n) d->n = os_strdup(s->n)
1847         C(device_name);
1848         C(manufacturer);
1849         C(model_name);
1850         C(model_number);
1851         C(serial_number);
1852         C(config_methods);
1853 #undef C
1854
1855         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1856         os_memcpy(d->sec_device_type, s->sec_device_type,
1857                   sizeof(d->sec_device_type));
1858         d->num_sec_device_types = s->num_sec_device_types;
1859
1860         d->p2p_group_idle = s->p2p_group_idle;
1861         d->p2p_intra_bss = s->p2p_intra_bss;
1862         d->persistent_reconnect = s->persistent_reconnect;
1863         d->max_num_sta = s->max_num_sta;
1864         d->pbc_in_m1 = s->pbc_in_m1;
1865         d->ignore_old_scan_res = s->ignore_old_scan_res;
1866         d->beacon_int = s->beacon_int;
1867         d->dtim_period = s->dtim_period;
1868         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1869         d->disassoc_low_ack = s->disassoc_low_ack;
1870         d->disable_scan_offload = s->disable_scan_offload;
1871         d->passive_scan = s->passive_scan;
1872
1873         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1874                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1875                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1876         }
1877 }
1878
1879
1880 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1881                                       char *ifname, size_t len)
1882 {
1883         char *ifname_ptr = wpa_s->ifname;
1884
1885         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1886                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1887                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1888         }
1889
1890         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1891         if (os_strlen(ifname) >= IFNAMSIZ &&
1892             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1893                 int res;
1894
1895                 /* Try to avoid going over the IFNAMSIZ length limit */
1896                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1897                 if (os_snprintf_error(len, res) && len)
1898                         ifname[len - 1] = '\0';
1899         }
1900 }
1901
1902
1903 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1904                                         enum wpa_driver_if_type type)
1905 {
1906         char ifname[120], force_ifname[120];
1907
1908         if (wpa_s->pending_interface_name[0]) {
1909                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1910                            "- skip creation of a new one");
1911                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1912                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1913                                    "unknown?! ifname='%s'",
1914                                    wpa_s->pending_interface_name);
1915                         return -1;
1916                 }
1917                 return 0;
1918         }
1919
1920         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1921         force_ifname[0] = '\0';
1922
1923         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1924                    ifname);
1925         wpa_s->p2p_group_idx++;
1926
1927         wpa_s->pending_interface_type = type;
1928         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1929                            wpa_s->pending_interface_addr, NULL) < 0) {
1930                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1931                            "interface");
1932                 return -1;
1933         }
1934
1935         if (force_ifname[0]) {
1936                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1937                            force_ifname);
1938                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1939                            sizeof(wpa_s->pending_interface_name));
1940         } else
1941                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1942                            sizeof(wpa_s->pending_interface_name));
1943         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1944                    MACSTR, wpa_s->pending_interface_name,
1945                    MAC2STR(wpa_s->pending_interface_addr));
1946
1947         return 0;
1948 }
1949
1950
1951 static void wpas_p2p_remove_pending_group_interface(
1952         struct wpa_supplicant *wpa_s)
1953 {
1954         if (!wpa_s->pending_interface_name[0] ||
1955             is_zero_ether_addr(wpa_s->pending_interface_addr))
1956                 return; /* No pending virtual interface */
1957
1958         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1959                    wpa_s->pending_interface_name);
1960         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1961                           wpa_s->pending_interface_name);
1962         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1963         wpa_s->pending_interface_name[0] = '\0';
1964         wpa_s->global->pending_group_iface_for_p2ps = 0;
1965 }
1966
1967
1968 static struct wpa_supplicant *
1969 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1970 {
1971         struct wpa_interface iface;
1972         struct wpa_supplicant *group_wpa_s;
1973
1974         if (!wpa_s->pending_interface_name[0]) {
1975                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1976                 if (!wpas_p2p_create_iface(wpa_s))
1977                         return NULL;
1978                 /*
1979                  * Something has forced us to remove the pending interface; try
1980                  * to create a new one and hope for the best that we will get
1981                  * the same local address.
1982                  */
1983                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1984                                                  WPA_IF_P2P_CLIENT) < 0)
1985                         return NULL;
1986         }
1987
1988         os_memset(&iface, 0, sizeof(iface));
1989         iface.ifname = wpa_s->pending_interface_name;
1990         iface.driver = wpa_s->driver->name;
1991         if (wpa_s->conf->ctrl_interface == NULL &&
1992             wpa_s->parent != wpa_s &&
1993             wpa_s->p2p_mgmt &&
1994             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1995                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1996         else
1997                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1998         iface.driver_param = wpa_s->conf->driver_param;
1999         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2000         if (group_wpa_s == NULL) {
2001                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2002                            "wpa_supplicant interface");
2003                 return NULL;
2004         }
2005         wpa_s->pending_interface_name[0] = '\0';
2006         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2007                 P2P_GROUP_INTERFACE_CLIENT;
2008         wpa_s->global->p2p_group_formation = group_wpa_s;
2009         wpa_s->global->pending_group_iface_for_p2ps = 0;
2010
2011         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2012
2013         return group_wpa_s;
2014 }
2015
2016
2017 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2018                                              void *timeout_ctx)
2019 {
2020         struct wpa_supplicant *wpa_s = eloop_ctx;
2021         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2022         wpas_p2p_group_formation_failed(wpa_s);
2023 }
2024
2025
2026 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
2027 {
2028         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2029                              wpa_s->parent, NULL);
2030         if (wpa_s->global->p2p)
2031                 p2p_group_formation_failed(wpa_s->global->p2p);
2032         wpas_group_formation_completed(wpa_s, 0);
2033 }
2034
2035
2036 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2037 {
2038         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2039         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2040                              wpa_s->parent, NULL);
2041         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2042                                wpa_s->parent, NULL);
2043         wpa_s->global->p2p_fail_on_wps_complete = 0;
2044 }
2045
2046
2047 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2048 {
2049         if (wpa_s->global->p2p_group_formation != wpa_s)
2050                 return;
2051         /* Speed up group formation timeout since this cannot succeed */
2052         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2053                              wpa_s->parent, NULL);
2054         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2055                                wpa_s->parent, NULL);
2056 }
2057
2058
2059 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2060 {
2061         struct wpa_supplicant *wpa_s = ctx;
2062
2063         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2064                 wpa_drv_cancel_remain_on_channel(wpa_s);
2065                 wpa_s->off_channel_freq = 0;
2066                 wpa_s->roc_waiting_drv_freq = 0;
2067         }
2068
2069         if (res->status) {
2070                 wpa_msg_global(wpa_s, MSG_INFO,
2071                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2072                                res->status);
2073                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2074                 wpas_p2p_remove_pending_group_interface(wpa_s);
2075                 return;
2076         }
2077
2078         if (wpa_s->p2p_go_ht40)
2079                 res->ht40 = 1;
2080         if (wpa_s->p2p_go_vht)
2081                 res->vht = 1;
2082
2083         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2084                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2085                        " wps_method=%s",
2086                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2087                        MAC2STR(res->peer_device_addr),
2088                        MAC2STR(res->peer_interface_addr),
2089                        p2p_wps_method_text(res->wps_method));
2090         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2091
2092         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2093                 struct wpa_ssid *ssid;
2094                 ssid = wpa_config_get_network(wpa_s->conf,
2095                                               wpa_s->p2p_persistent_id);
2096                 if (ssid && ssid->disabled == 2 &&
2097                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2098                         size_t len = os_strlen(ssid->passphrase);
2099                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2100                                    "on requested persistent group");
2101                         os_memcpy(res->passphrase, ssid->passphrase, len);
2102                         res->passphrase[len] = '\0';
2103                 }
2104         }
2105
2106         if (wpa_s->create_p2p_iface) {
2107                 struct wpa_supplicant *group_wpa_s =
2108                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2109                 if (group_wpa_s == NULL) {
2110                         wpas_p2p_remove_pending_group_interface(wpa_s);
2111                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2112                                              wpa_s, NULL);
2113                         wpas_p2p_group_formation_failed(wpa_s);
2114                         return;
2115                 }
2116                 if (group_wpa_s != wpa_s) {
2117                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2118                                   sizeof(group_wpa_s->p2p_pin));
2119                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2120                 }
2121                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2122                 wpa_s->pending_interface_name[0] = '\0';
2123                 group_wpa_s->p2p_in_provisioning = 1;
2124
2125                 if (res->role_go)
2126                         wpas_start_wps_go(group_wpa_s, res, 1);
2127                 else
2128                         wpas_start_wps_enrollee(group_wpa_s, res);
2129         } else {
2130                 wpa_s->p2p_in_provisioning = 1;
2131                 wpa_s->global->p2p_group_formation = wpa_s;
2132
2133                 if (res->role_go)
2134                         wpas_start_wps_go(wpa_s, res, 1);
2135                 else
2136                         wpas_start_wps_enrollee(ctx, res);
2137         }
2138
2139         wpa_s->p2p_long_listen = 0;
2140         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2141
2142         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2143         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2144                                (res->peer_config_timeout % 100) * 10000,
2145                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2146 }
2147
2148
2149 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
2150 {
2151         struct wpa_supplicant *wpa_s = ctx;
2152         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2153                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
2154
2155         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
2156 }
2157
2158
2159 static void wpas_dev_found(void *ctx, const u8 *addr,
2160                            const struct p2p_peer_info *info,
2161                            int new_device)
2162 {
2163 #ifndef CONFIG_NO_STDOUT_DEBUG
2164         struct wpa_supplicant *wpa_s = ctx;
2165         char devtype[WPS_DEV_TYPE_BUFSIZE];
2166         char *wfd_dev_info_hex = NULL;
2167
2168 #ifdef CONFIG_WIFI_DISPLAY
2169         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2170                                                     WFD_SUBELEM_DEVICE_INFO);
2171 #endif /* CONFIG_WIFI_DISPLAY */
2172
2173         if (info->p2ps_instance) {
2174                 char str[256];
2175                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2176                 size_t len = wpabuf_len(info->p2ps_instance);
2177
2178                 while (len) {
2179                         u32 id;
2180                         u16 methods;
2181                         u8 str_len;
2182
2183                         if (len < 4 + 2 + 1)
2184                                 break;
2185                         id = WPA_GET_LE32(buf);
2186                         buf += sizeof(u32);
2187                         methods = WPA_GET_BE16(buf);
2188                         buf += sizeof(u16);
2189                         str_len = *buf++;
2190                         if (str_len > len - 4 - 2 - 1)
2191                                 break;
2192                         os_memcpy(str, buf, str_len);
2193                         str[str_len] = '\0';
2194                         buf += str_len;
2195                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2196
2197                         wpa_msg_global(wpa_s, MSG_INFO,
2198                                        P2P_EVENT_DEVICE_FOUND MACSTR
2199                                        " p2p_dev_addr=" MACSTR
2200                                        " pri_dev_type=%s name='%s'"
2201                                        " config_methods=0x%x"
2202                                        " dev_capab=0x%x"
2203                                        " group_capab=0x%x"
2204                                        " adv_id=%x asp_svc=%s%s",
2205                                        MAC2STR(addr),
2206                                        MAC2STR(info->p2p_device_addr),
2207                                        wps_dev_type_bin2str(
2208                                                info->pri_dev_type,
2209                                                devtype, sizeof(devtype)),
2210                                        info->device_name, methods,
2211                                        info->dev_capab, info->group_capab,
2212                                        id, str,
2213                                        info->vendor_elems ?
2214                                        " vendor_elems=1" : "");
2215                 }
2216                 goto done;
2217         }
2218
2219         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2220                        " p2p_dev_addr=" MACSTR
2221                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2222                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2223                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2224                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2225                                             sizeof(devtype)),
2226                        info->device_name, info->config_methods,
2227                        info->dev_capab, info->group_capab,
2228                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2229                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2230                        info->vendor_elems ? " vendor_elems=1" : "",
2231                        new_device);
2232
2233 done:
2234         os_free(wfd_dev_info_hex);
2235 #endif /* CONFIG_NO_STDOUT_DEBUG */
2236
2237         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2238 }
2239
2240
2241 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2242 {
2243         struct wpa_supplicant *wpa_s = ctx;
2244
2245         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2246                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2247
2248         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2249 }
2250
2251
2252 static void wpas_find_stopped(void *ctx)
2253 {
2254         struct wpa_supplicant *wpa_s = ctx;
2255         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2256         wpas_notify_p2p_find_stopped(wpa_s);
2257 }
2258
2259
2260 struct wpas_p2p_listen_work {
2261         unsigned int freq;
2262         unsigned int duration;
2263         struct wpabuf *probe_resp_ie;
2264 };
2265
2266
2267 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2268 {
2269         if (lwork == NULL)
2270                 return;
2271         wpabuf_free(lwork->probe_resp_ie);
2272         os_free(lwork);
2273 }
2274
2275
2276 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2277 {
2278         struct wpas_p2p_listen_work *lwork;
2279
2280         if (!wpa_s->p2p_listen_work)
2281                 return;
2282
2283         lwork = wpa_s->p2p_listen_work->ctx;
2284         wpas_p2p_listen_work_free(lwork);
2285         radio_work_done(wpa_s->p2p_listen_work);
2286         wpa_s->p2p_listen_work = NULL;
2287 }
2288
2289
2290 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2291 {
2292         struct wpa_supplicant *wpa_s = work->wpa_s;
2293         struct wpas_p2p_listen_work *lwork = work->ctx;
2294         unsigned int duration;
2295
2296         if (deinit) {
2297                 if (work->started) {
2298                         wpa_s->p2p_listen_work = NULL;
2299                         wpas_stop_listen(wpa_s);
2300                 }
2301                 wpas_p2p_listen_work_free(lwork);
2302                 return;
2303         }
2304
2305         wpa_s->p2p_listen_work = work;
2306
2307         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2308
2309         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2310                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2311                            "report received Probe Request frames");
2312                 wpas_p2p_listen_work_done(wpa_s);
2313                 return;
2314         }
2315
2316         wpa_s->pending_listen_freq = lwork->freq;
2317         wpa_s->pending_listen_duration = lwork->duration;
2318
2319         duration = lwork->duration;
2320 #ifdef CONFIG_TESTING_OPTIONS
2321         if (wpa_s->extra_roc_dur) {
2322                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2323                            duration, duration + wpa_s->extra_roc_dur);
2324                 duration += wpa_s->extra_roc_dur;
2325         }
2326 #endif /* CONFIG_TESTING_OPTIONS */
2327
2328         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2329                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2330                            "to remain on channel (%u MHz) for Listen "
2331                            "state", lwork->freq);
2332                 wpas_p2p_listen_work_done(wpa_s);
2333                 wpa_s->pending_listen_freq = 0;
2334                 return;
2335         }
2336         wpa_s->off_channel_freq = 0;
2337         wpa_s->roc_waiting_drv_freq = lwork->freq;
2338 }
2339
2340
2341 static int wpas_start_listen(void *ctx, unsigned int freq,
2342                              unsigned int duration,
2343                              const struct wpabuf *probe_resp_ie)
2344 {
2345         struct wpa_supplicant *wpa_s = ctx;
2346         struct wpas_p2p_listen_work *lwork;
2347
2348         if (wpa_s->p2p_listen_work) {
2349                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2350                 return -1;
2351         }
2352
2353         lwork = os_zalloc(sizeof(*lwork));
2354         if (lwork == NULL)
2355                 return -1;
2356         lwork->freq = freq;
2357         lwork->duration = duration;
2358         if (probe_resp_ie) {
2359                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2360                 if (lwork->probe_resp_ie == NULL) {
2361                         wpas_p2p_listen_work_free(lwork);
2362                         return -1;
2363                 }
2364         }
2365
2366         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2367                            lwork) < 0) {
2368                 wpas_p2p_listen_work_free(lwork);
2369                 return -1;
2370         }
2371
2372         return 0;
2373 }
2374
2375
2376 static void wpas_stop_listen(void *ctx)
2377 {
2378         struct wpa_supplicant *wpa_s = ctx;
2379         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2380                 wpa_drv_cancel_remain_on_channel(wpa_s);
2381                 wpa_s->off_channel_freq = 0;
2382                 wpa_s->roc_waiting_drv_freq = 0;
2383         }
2384         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2385         wpa_drv_probe_req_report(wpa_s, 0);
2386         wpas_p2p_listen_work_done(wpa_s);
2387 }
2388
2389
2390 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
2391 {
2392         struct wpa_supplicant *wpa_s = ctx;
2393         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
2394 }
2395
2396
2397 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2398                                          const u8 *peer, const char *params,
2399                                          unsigned int generated_pin)
2400 {
2401         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2402                        " %08d%s", MAC2STR(peer), generated_pin, params);
2403 }
2404
2405
2406 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2407                                         const u8 *peer, const char *params)
2408 {
2409         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2410                        "%s", MAC2STR(peer), params);
2411 }
2412
2413
2414 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2415                                const u8 *dev_addr, const u8 *pri_dev_type,
2416                                const char *dev_name, u16 supp_config_methods,
2417                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2418                                size_t group_id_len)
2419 {
2420         struct wpa_supplicant *wpa_s = ctx;
2421         char devtype[WPS_DEV_TYPE_BUFSIZE];
2422         char params[300];
2423         u8 empty_dev_type[8];
2424         unsigned int generated_pin = 0;
2425         struct wpa_supplicant *group = NULL;
2426         int res;
2427
2428         if (group_id) {
2429                 for (group = wpa_s->global->ifaces; group; group = group->next)
2430                 {
2431                         struct wpa_ssid *s = group->current_ssid;
2432                         if (s != NULL &&
2433                             s->mode == WPAS_MODE_P2P_GO &&
2434                             group_id_len - ETH_ALEN == s->ssid_len &&
2435                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2436                                       s->ssid_len) == 0)
2437                                 break;
2438                 }
2439         }
2440
2441         if (pri_dev_type == NULL) {
2442                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2443                 pri_dev_type = empty_dev_type;
2444         }
2445         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2446                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2447                           "dev_capab=0x%x group_capab=0x%x%s%s",
2448                           MAC2STR(dev_addr),
2449                           wps_dev_type_bin2str(pri_dev_type, devtype,
2450                                                sizeof(devtype)),
2451                           dev_name, supp_config_methods, dev_capab, group_capab,
2452                           group ? " group=" : "",
2453                           group ? group->ifname : "");
2454         if (os_snprintf_error(sizeof(params), res))
2455                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2456         params[sizeof(params) - 1] = '\0';
2457
2458         if (config_methods & WPS_CONFIG_DISPLAY) {
2459                 generated_pin = wps_generate_pin();
2460                 wpas_prov_disc_local_display(wpa_s, peer, params,
2461                                              generated_pin);
2462         } else if (config_methods & WPS_CONFIG_KEYPAD)
2463                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2464         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2465                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2466                                MACSTR "%s", MAC2STR(peer), params);
2467
2468         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2469                                             P2P_PROV_DISC_SUCCESS,
2470                                             config_methods, generated_pin);
2471 }
2472
2473
2474 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2475 {
2476         struct wpa_supplicant *wpa_s = ctx;
2477         unsigned int generated_pin = 0;
2478         char params[20];
2479
2480         if (wpa_s->pending_pd_before_join &&
2481             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2482              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2483                 wpa_s->pending_pd_before_join = 0;
2484                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2485                            "join-existing-group operation");
2486                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2487                 return;
2488         }
2489
2490         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2491             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2492                 int res;
2493
2494                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2495                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2496                 if (os_snprintf_error(sizeof(params), res))
2497                         params[sizeof(params) - 1] = '\0';
2498         } else
2499                 params[0] = '\0';
2500
2501         if (config_methods & WPS_CONFIG_DISPLAY)
2502                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2503         else if (config_methods & WPS_CONFIG_KEYPAD) {
2504                 generated_pin = wps_generate_pin();
2505                 wpas_prov_disc_local_display(wpa_s, peer, params,
2506                                              generated_pin);
2507         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2508                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2509                                MACSTR "%s", MAC2STR(peer), params);
2510
2511         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2512                                             P2P_PROV_DISC_SUCCESS,
2513                                             config_methods, generated_pin);
2514 }
2515
2516
2517 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2518                                 enum p2p_prov_disc_status status,
2519                                 u32 adv_id, const u8 *adv_mac,
2520                                 const char *deferred_session_resp)
2521 {
2522         struct wpa_supplicant *wpa_s = ctx;
2523
2524         if (wpa_s->p2p_fallback_to_go_neg) {
2525                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2526                         "failed - fall back to GO Negotiation");
2527                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2528                                P2P_EVENT_FALLBACK_TO_GO_NEG
2529                                "reason=PD-failed");
2530                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2531                 return;
2532         }
2533
2534         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2535                 wpa_s->pending_pd_before_join = 0;
2536                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2537                            "join-existing-group operation (no ACK for PD "
2538                            "Req attempts)");
2539                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2540                 return;
2541         }
2542
2543         if (adv_id && adv_mac && deferred_session_resp) {
2544                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2545                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2546                                " deferred_session_resp='%s'",
2547                                MAC2STR(peer), status, adv_id,
2548                                deferred_session_resp);
2549         } else if (adv_id && adv_mac) {
2550                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2551                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2552                                MAC2STR(peer), status, adv_id);
2553         } else {
2554                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2555                                " p2p_dev_addr=" MACSTR " status=%d",
2556                                MAC2STR(peer), status);
2557         }
2558
2559         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2560                                             status, 0, 0);
2561 }
2562
2563
2564 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2565 {
2566         if (channels == NULL)
2567                 return 1; /* Assume no restrictions */
2568         return p2p_channels_includes_freq(channels, freq);
2569
2570 }
2571
2572
2573 /**
2574  * Pick the best frequency to use from all the currently used frequencies.
2575  */
2576 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2577                                         struct wpa_used_freq_data *freqs,
2578                                         unsigned int num)
2579 {
2580         unsigned int i, c;
2581
2582         /* find a candidate freq that is supported by P2P */
2583         for (c = 0; c < num; c++)
2584                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2585                         break;
2586
2587         if (c == num)
2588                 return 0;
2589
2590         /* once we have a candidate, try to find a 'better' one */
2591         for (i = c + 1; i < num; i++) {
2592                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2593                         continue;
2594
2595                 /*
2596                  * 1. Infrastructure station interfaces have higher preference.
2597                  * 2. P2P Clients have higher preference.
2598                  * 3. All others.
2599                  */
2600                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2601                         c = i;
2602                         break;
2603                 }
2604
2605                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2606                         c = i;
2607         }
2608         return freqs[c].freq;
2609 }
2610
2611
2612 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2613                                   const u8 *go_dev_addr, const u8 *ssid,
2614                                   size_t ssid_len, int *go, u8 *group_bssid,
2615                                   int *force_freq, int persistent_group,
2616                                   const struct p2p_channels *channels,
2617                                   int dev_pw_id)
2618 {
2619         struct wpa_supplicant *wpa_s = ctx;
2620         struct wpa_ssid *s;
2621         struct wpa_used_freq_data *freqs;
2622         struct wpa_supplicant *grp;
2623         int best_freq;
2624
2625         if (!persistent_group) {
2626                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2627                            " to join an active group (SSID: %s)",
2628                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2629                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2630                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2631                      == 0 ||
2632                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2633                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2634                                    "authorized invitation");
2635                         goto accept_inv;
2636                 }
2637
2638 #ifdef CONFIG_WPS_NFC
2639                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2640                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2641                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2642                         wpa_s->p2p_wps_method = WPS_NFC;
2643                         wpa_s->pending_join_wps_method = WPS_NFC;
2644                         os_memcpy(wpa_s->pending_join_dev_addr,
2645                                   go_dev_addr, ETH_ALEN);
2646                         os_memcpy(wpa_s->pending_join_iface_addr,
2647                                   bssid, ETH_ALEN);
2648                         goto accept_inv;
2649                 }
2650 #endif /* CONFIG_WPS_NFC */
2651
2652                 /*
2653                  * Do not accept the invitation automatically; notify user and
2654                  * request approval.
2655                  */
2656                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2657         }
2658
2659         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2660         if (grp) {
2661                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2662                            "running persistent group");
2663                 if (*go)
2664                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2665                 goto accept_inv;
2666         }
2667
2668         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2669             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2670                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2671                            "invitation to re-invoke a persistent group");
2672                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2673         } else if (!wpa_s->conf->persistent_reconnect)
2674                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2675
2676         for (s = wpa_s->conf->ssid; s; s = s->next) {
2677                 if (s->disabled == 2 &&
2678                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2679                     s->ssid_len == ssid_len &&
2680                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2681                         break;
2682         }
2683
2684         if (!s) {
2685                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2686                            " requested reinvocation of an unknown group",
2687                            MAC2STR(sa));
2688                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2689         }
2690
2691         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2692                 *go = 1;
2693                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2694                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2695                                    "interface is already in use - reject "
2696                                    "invitation");
2697                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2698                 }
2699                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2700         } else if (s->mode == WPAS_MODE_P2P_GO) {
2701                 *go = 1;
2702                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2703                 {
2704                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2705                                    "interface address for the group");
2706                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2707                 }
2708                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2709                           ETH_ALEN);
2710         }
2711
2712 accept_inv:
2713         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2714
2715         best_freq = 0;
2716         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2717                           sizeof(struct wpa_used_freq_data));
2718         if (freqs) {
2719                 int num_channels = wpa_s->num_multichan_concurrent;
2720                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2721                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2722                 os_free(freqs);
2723         }
2724
2725         /* Get one of the frequencies currently in use */
2726         if (best_freq > 0) {
2727                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2728                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2729
2730                 if (wpa_s->num_multichan_concurrent < 2 ||
2731                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2732                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2733                         *force_freq = best_freq;
2734                 }
2735         }
2736
2737         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2738             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2739                 if (*go == 0) {
2740                         /* We are the client */
2741                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2742                                    "running a GO but we are capable of MCC, "
2743                                    "figure out the best channel to use");
2744                         *force_freq = 0;
2745                 } else if (!freq_included(channels, *force_freq)) {
2746                         /* We are the GO, and *force_freq is not in the
2747                          * intersection */
2748                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2749                                    "in intersection but we are capable of MCC, "
2750                                    "figure out the best channel to use",
2751                                    *force_freq);
2752                         *force_freq = 0;
2753                 }
2754         }
2755
2756         return P2P_SC_SUCCESS;
2757 }
2758
2759
2760 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2761                                      const u8 *ssid, size_t ssid_len,
2762                                      const u8 *go_dev_addr, u8 status,
2763                                      int op_freq)
2764 {
2765         struct wpa_supplicant *wpa_s = ctx;
2766         struct wpa_ssid *s;
2767
2768         for (s = wpa_s->conf->ssid; s; s = s->next) {
2769                 if (s->disabled == 2 &&
2770                     s->ssid_len == ssid_len &&
2771                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2772                         break;
2773         }
2774
2775         if (status == P2P_SC_SUCCESS) {
2776                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2777                            " was accepted; op_freq=%d MHz, SSID=%s",
2778                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2779                 if (s) {
2780                         int go = s->mode == WPAS_MODE_P2P_GO;
2781                         wpas_p2p_group_add_persistent(
2782                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2783                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2784                 } else if (bssid) {
2785                         wpa_s->user_initiated_pd = 0;
2786                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2787                                       wpa_s->p2p_wps_method, 0, op_freq,
2788                                       ssid, ssid_len);
2789                 }
2790                 return;
2791         }
2792
2793         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2794                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2795                            " was rejected (status %u)", MAC2STR(sa), status);
2796                 return;
2797         }
2798
2799         if (!s) {
2800                 if (bssid) {
2801                         wpa_msg_global(wpa_s, MSG_INFO,
2802                                        P2P_EVENT_INVITATION_RECEIVED
2803                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2804                                        " bssid=" MACSTR " unknown-network",
2805                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2806                                        MAC2STR(bssid));
2807                 } else {
2808                         wpa_msg_global(wpa_s, MSG_INFO,
2809                                        P2P_EVENT_INVITATION_RECEIVED
2810                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2811                                        " unknown-network",
2812                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2813                 }
2814                 return;
2815         }
2816
2817         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2818                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2819                                "sa=" MACSTR " persistent=%d freq=%d",
2820                                MAC2STR(sa), s->id, op_freq);
2821         } else {
2822                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2823                                "sa=" MACSTR " persistent=%d",
2824                                MAC2STR(sa), s->id);
2825         }
2826 }
2827
2828
2829 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2830                                         struct wpa_ssid *ssid,
2831                                         const u8 *peer, int inv)
2832 {
2833         size_t i;
2834         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2835
2836         if (ssid == NULL)
2837                 return;
2838
2839         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2840                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2841                               ETH_ALEN) == 0)
2842                         break;
2843         }
2844         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2845                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2846                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2847                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2848                                    "due to invitation result", ssid->id);
2849                         wpas_notify_network_removed(wpa_s, ssid);
2850                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2851                         return;
2852                 }
2853                 return; /* Peer not found in client list */
2854         }
2855
2856         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2857                    "group %d client list%s",
2858                    MAC2STR(peer), ssid->id,
2859                    inv ? " due to invitation result" : "");
2860         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2861                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2862                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2863         ssid->num_p2p_clients--;
2864         if (p2p_wpa_s->conf->update_config &&
2865             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2866                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2867 }
2868
2869
2870 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2871                                           const u8 *peer)
2872 {
2873         struct wpa_ssid *ssid;
2874
2875         wpa_s = wpa_s->global->p2p_invite_group;
2876         if (wpa_s == NULL)
2877                 return; /* No known invitation group */
2878         ssid = wpa_s->current_ssid;
2879         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2880             !ssid->p2p_persistent_group)
2881                 return; /* Not operating as a GO in persistent group */
2882         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2883                                        ssid->ssid, ssid->ssid_len);
2884         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2885 }
2886
2887
2888 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2889                                    const struct p2p_channels *channels,
2890                                    const u8 *peer, int neg_freq,
2891                                    int peer_oper_freq)
2892 {
2893         struct wpa_supplicant *wpa_s = ctx;
2894         struct wpa_ssid *ssid;
2895         int freq;
2896
2897         if (bssid) {
2898                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2899                                "status=%d " MACSTR,
2900                                status, MAC2STR(bssid));
2901         } else {
2902                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2903                                "status=%d ", status);
2904         }
2905         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2906
2907         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2908                    status, MAC2STR(peer));
2909         if (wpa_s->pending_invite_ssid_id == -1) {
2910                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2911                         wpas_remove_persistent_client(wpa_s, peer);
2912                 return; /* Invitation to active group */
2913         }
2914
2915         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2916                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2917                            "invitation exchange to indicate readiness for "
2918                            "re-invocation");
2919         }
2920
2921         if (status != P2P_SC_SUCCESS) {
2922                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2923                         ssid = wpa_config_get_network(
2924                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2925                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2926                 }
2927                 wpas_p2p_remove_pending_group_interface(wpa_s);
2928                 return;
2929         }
2930
2931         ssid = wpa_config_get_network(wpa_s->conf,
2932                                       wpa_s->pending_invite_ssid_id);
2933         if (ssid == NULL) {
2934                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2935                            "data matching with invitation");
2936                 return;
2937         }
2938
2939         /*
2940          * The peer could have missed our ctrl::ack frame for Invitation
2941          * Response and continue retransmitting the frame. To reduce the
2942          * likelihood of the peer not getting successful TX status for the
2943          * Invitation Response frame, wait a short time here before starting
2944          * the persistent group so that we will remain on the current channel to
2945          * acknowledge any possible retransmission from the peer.
2946          */
2947         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2948                 "starting persistent group");
2949         os_sleep(0, 50000);
2950
2951         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2952             freq_included(channels, neg_freq))
2953                 freq = neg_freq;
2954         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2955                  freq_included(channels, peer_oper_freq))
2956                 freq = peer_oper_freq;
2957         else
2958                 freq = 0;
2959
2960         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2961                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2962         wpas_p2p_group_add_persistent(wpa_s, ssid,
2963                                       ssid->mode == WPAS_MODE_P2P_GO,
2964                                       wpa_s->p2p_persistent_go_freq,
2965                                       freq,
2966                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2967                                       channels,
2968                                       ssid->mode == WPAS_MODE_P2P_GO ?
2969                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2970                                       0);
2971 }
2972
2973
2974 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2975                                     unsigned int freq)
2976 {
2977         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2978                 return 1;
2979         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2980 }
2981
2982
2983 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2984 {
2985         reg->channel[reg->channels] = chan;
2986         reg->channels++;
2987 }
2988
2989
2990 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2991                                      struct p2p_channels *chan,
2992                                      struct p2p_channels *cli_chan)
2993 {
2994         int i, cla = 0;
2995
2996         wpa_s->global->p2p_24ghz_social_channels = 1;
2997
2998         os_memset(cli_chan, 0, sizeof(*cli_chan));
2999
3000         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3001                    "band");
3002
3003         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3004         chan->reg_class[cla].reg_class = 81;
3005         chan->reg_class[cla].channels = 0;
3006         for (i = 0; i < 11; i++) {
3007                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3008                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3009         }
3010         if (chan->reg_class[cla].channels)
3011                 cla++;
3012
3013         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3014                    "band");
3015
3016         /* Operating class 115 - 5 GHz, channels 36-48 */
3017         chan->reg_class[cla].reg_class = 115;
3018         chan->reg_class[cla].channels = 0;
3019         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3020                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3021         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3022                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3023         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3024                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3025         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3026                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3027         if (chan->reg_class[cla].channels)
3028                 cla++;
3029
3030         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3031                    "band");
3032
3033         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3034         chan->reg_class[cla].reg_class = 124;
3035         chan->reg_class[cla].channels = 0;
3036         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3037                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3038         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3039                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3040         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3041                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3042         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3043                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3044         if (chan->reg_class[cla].channels)
3045                 cla++;
3046
3047         chan->reg_classes = cla;
3048         return 0;
3049 }
3050
3051
3052 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3053                                           u16 num_modes,
3054                                           enum hostapd_hw_mode mode)
3055 {
3056         u16 i;
3057
3058         for (i = 0; i < num_modes; i++) {
3059                 if (modes[i].mode == mode)
3060                         return &modes[i];
3061         }
3062
3063         return NULL;
3064 }
3065
3066
3067 enum chan_allowed {
3068         NOT_ALLOWED, NO_IR, ALLOWED
3069 };
3070
3071 static int has_channel(struct wpa_global *global,
3072                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3073 {
3074         int i;
3075         unsigned int freq;
3076
3077         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3078                 chan * 5;
3079         if (wpas_p2p_disallowed_freq(global, freq))
3080                 return NOT_ALLOWED;
3081
3082         for (i = 0; i < mode->num_channels; i++) {
3083                 if (mode->channels[i].chan == chan) {
3084                         if (flags)
3085                                 *flags = mode->channels[i].flag;
3086                         if (mode->channels[i].flag &
3087                             (HOSTAPD_CHAN_DISABLED |
3088                              HOSTAPD_CHAN_RADAR))
3089                                 return NOT_ALLOWED;
3090                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3091                                 return NO_IR;
3092                         return ALLOWED;
3093                 }
3094         }
3095
3096         return NOT_ALLOWED;
3097 }
3098
3099
3100 struct p2p_oper_class_map {
3101         enum hostapd_hw_mode mode;
3102         u8 op_class;
3103         u8 min_chan;
3104         u8 max_chan;
3105         u8 inc;
3106         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3107 };
3108
3109 static const struct p2p_oper_class_map op_class[] = {
3110         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3111 #if 0 /* Do not enable HT40 on 2 GHz for now */
3112         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3113         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3114 #endif
3115         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3116         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3117         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3118         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3119         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3120         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3121
3122         /*
3123          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3124          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3125          * 80 MHz, but currently use the following definition for simplicity
3126          * (these center frequencies are not actual channels, which makes
3127          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3128          * removing invalid channels.
3129          */
3130         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3131         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3132         { -1, 0, 0, 0, 0, BW20 }
3133 };
3134
3135
3136 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3137                                      struct hostapd_hw_modes *mode,
3138                                      u8 channel)
3139 {
3140         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3141         unsigned int i;
3142
3143         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3144                 return 0;
3145
3146         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3147                 /*
3148                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3149                  * so the center channel is 6 channels away from the start/end.
3150                  */
3151                 if (channel >= center_channels[i] - 6 &&
3152                     channel <= center_channels[i] + 6)
3153                         return center_channels[i];
3154
3155         return 0;
3156 }
3157
3158
3159 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3160                                                struct hostapd_hw_modes *mode,
3161                                                u8 channel, u8 bw)
3162 {
3163         u8 center_chan;
3164         int i, flags;
3165         enum chan_allowed res, ret = ALLOWED;
3166
3167         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3168         if (!center_chan)
3169                 return NOT_ALLOWED;
3170         if (center_chan >= 58 && center_chan <= 138)
3171                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3172
3173         /* check all the channels are available */
3174         for (i = 0; i < 4; i++) {
3175                 int adj_chan = center_chan - 6 + i * 4;
3176
3177                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3178                 if (res == NOT_ALLOWED)
3179                         return NOT_ALLOWED;
3180                 if (res == NO_IR)
3181                         ret = NO_IR;
3182
3183                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3184                         return NOT_ALLOWED;
3185                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3186                         return NOT_ALLOWED;
3187                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3188                         return NOT_ALLOWED;
3189                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3190                         return NOT_ALLOWED;
3191         }
3192
3193         return ret;
3194 }
3195
3196
3197 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3198                                                  struct hostapd_hw_modes *mode,
3199                                                  u8 channel, u8 bw)
3200 {
3201         int flag = 0;
3202         enum chan_allowed res, res2;
3203
3204         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3205         if (bw == BW40MINUS) {
3206                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3207                         return NOT_ALLOWED;
3208                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3209         } else if (bw == BW40PLUS) {
3210                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3211                         return NOT_ALLOWED;
3212                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3213         } else if (bw == BW80) {
3214                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3215         }
3216
3217         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3218                 return NOT_ALLOWED;
3219         if (res == NO_IR || res2 == NO_IR)
3220                 return NO_IR;
3221         return res;
3222 }
3223
3224
3225 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3226                                    struct p2p_channels *chan,
3227                                    struct p2p_channels *cli_chan)
3228 {
3229         struct hostapd_hw_modes *mode;
3230         int cla, op, cli_cla;
3231
3232         if (wpa_s->hw.modes == NULL) {
3233                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3234                            "of all supported channels; assume dualband "
3235                            "support");
3236                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3237         }
3238
3239         cla = cli_cla = 0;
3240
3241         for (op = 0; op_class[op].op_class; op++) {
3242                 const struct p2p_oper_class_map *o = &op_class[op];
3243                 u8 ch;
3244                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3245
3246                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3247                 if (mode == NULL)
3248                         continue;
3249                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3250                         wpa_s->global->p2p_24ghz_social_channels = 1;
3251                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3252                         enum chan_allowed res;
3253                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3254                         if (res == ALLOWED) {
3255                                 if (reg == NULL) {
3256                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3257                                                    o->op_class);
3258                                         reg = &chan->reg_class[cla];
3259                                         cla++;
3260                                         reg->reg_class = o->op_class;
3261                                 }
3262                                 reg->channel[reg->channels] = ch;
3263                                 reg->channels++;
3264                         } else if (res == NO_IR &&
3265                                    wpa_s->conf->p2p_add_cli_chan) {
3266                                 if (cli_reg == NULL) {
3267                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3268                                                    o->op_class);
3269                                         cli_reg = &cli_chan->reg_class[cli_cla];
3270                                         cli_cla++;
3271                                         cli_reg->reg_class = o->op_class;
3272                                 }
3273                                 cli_reg->channel[cli_reg->channels] = ch;
3274                                 cli_reg->channels++;
3275                         }
3276                 }
3277                 if (reg) {
3278                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3279                                     reg->channel, reg->channels);
3280                 }
3281                 if (cli_reg) {
3282                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3283                                     cli_reg->channel, cli_reg->channels);
3284                 }
3285         }
3286
3287         chan->reg_classes = cla;
3288         cli_chan->reg_classes = cli_cla;
3289
3290         return 0;
3291 }
3292
3293
3294 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3295                            struct hostapd_hw_modes *mode, u8 channel)
3296 {
3297         int op;
3298         enum chan_allowed ret;
3299
3300         for (op = 0; op_class[op].op_class; op++) {
3301                 const struct p2p_oper_class_map *o = &op_class[op];
3302                 u8 ch;
3303
3304                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3305                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3306                             o->bw == BW20 || ch != channel)
3307                                 continue;
3308                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3309                         if (ret == ALLOWED)
3310                                 return (o->bw == BW40MINUS) ? -1 : 1;
3311                 }
3312         }
3313         return 0;
3314 }
3315
3316
3317 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3318                               struct hostapd_hw_modes *mode, u8 channel)
3319 {
3320         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3321                 return 0;
3322
3323         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3324 }
3325
3326
3327 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3328                         size_t buf_len)
3329 {
3330         struct wpa_supplicant *wpa_s = ctx;
3331
3332         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3333                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3334                         break;
3335         }
3336         if (wpa_s == NULL)
3337                 return -1;
3338
3339         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3340 }
3341
3342
3343 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3344                                               const u8 *ssid, size_t ssid_len)
3345 {
3346         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3347                 struct wpa_ssid *s = wpa_s->current_ssid;
3348                 if (s == NULL)
3349                         continue;
3350                 if (s->mode != WPAS_MODE_P2P_GO &&
3351                     s->mode != WPAS_MODE_AP &&
3352                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3353                         continue;
3354                 if (s->ssid_len != ssid_len ||
3355                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3356                         continue;
3357                 return wpa_s;
3358         }
3359
3360         return NULL;
3361
3362 }
3363
3364
3365 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3366                                                   const u8 *peer_dev_addr)
3367 {
3368         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3369                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3370                 if (ssid == NULL)
3371                         continue;
3372                 if (ssid->mode != WPAS_MODE_INFRA)
3373                         continue;
3374                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3375                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3376                         continue;
3377                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3378                         return wpa_s;
3379         }
3380
3381         return NULL;
3382 }
3383
3384
3385 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3386 {
3387         struct wpa_supplicant *wpa_s = ctx;
3388
3389         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3390 }
3391
3392
3393 static int wpas_is_concurrent_session_active(void *ctx)
3394 {
3395         struct wpa_supplicant *wpa_s = ctx;
3396         struct wpa_supplicant *ifs;
3397
3398         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3399                 if (ifs == wpa_s)
3400                         continue;
3401                 if (ifs->wpa_state > WPA_ASSOCIATED)
3402                         return 1;
3403         }
3404         return 0;
3405 }
3406
3407
3408 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3409 {
3410         struct wpa_supplicant *wpa_s = ctx;
3411         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3412 }
3413
3414
3415 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3416                                   const char *conf_p2p_dev)
3417 {
3418         struct wpa_interface iface;
3419         struct wpa_supplicant *p2pdev_wpa_s;
3420         char ifname[100];
3421         char force_name[100];
3422         int ret;
3423
3424         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3425                           wpa_s->ifname);
3426         if (os_snprintf_error(sizeof(ifname), ret))
3427                 return -1;
3428         force_name[0] = '\0';
3429         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3430         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3431                              force_name, wpa_s->pending_interface_addr, NULL);
3432         if (ret < 0) {
3433                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3434                 return ret;
3435         }
3436         os_strlcpy(wpa_s->pending_interface_name, ifname,
3437                    sizeof(wpa_s->pending_interface_name));
3438
3439         os_memset(&iface, 0, sizeof(iface));
3440         iface.p2p_mgmt = 1;
3441         iface.ifname = wpa_s->pending_interface_name;
3442         iface.driver = wpa_s->driver->name;
3443         iface.driver_param = wpa_s->conf->driver_param;
3444
3445         /*
3446          * If a P2P Device configuration file was given, use it as the interface
3447          * configuration file (instead of using parent's configuration file.
3448          */
3449         if (conf_p2p_dev) {
3450                 iface.confname = conf_p2p_dev;
3451                 iface.ctrl_interface = NULL;
3452         } else {
3453                 iface.confname = wpa_s->confname;
3454                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3455         }
3456         iface.conf_p2p_dev = NULL;
3457
3458         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3459         if (!p2pdev_wpa_s) {
3460                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3461                 return -1;
3462         }
3463         wpa_s->p2p_dev = p2pdev_wpa_s;
3464
3465         wpa_s->pending_interface_name[0] = '\0';
3466         return 0;
3467 }
3468
3469
3470 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3471                                const u8 *noa, size_t noa_len)
3472 {
3473         struct wpa_supplicant *wpa_s, *intf = ctx;
3474         char hex[100];
3475
3476         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3477                 if (wpa_s->waiting_presence_resp)
3478                         break;
3479         }
3480         if (!wpa_s) {
3481                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3482                 return;
3483         }
3484         wpa_s->waiting_presence_resp = 0;
3485
3486         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3487         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3488                 " status=%u noa=%s", MAC2STR(src), status, hex);
3489 }
3490
3491
3492 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3493                                      size_t ssid_len, u8 *go_dev_addr,
3494                                      u8 *ret_ssid, size_t *ret_ssid_len)
3495 {
3496         struct wpa_supplicant *wpa_s = ctx;
3497         struct wpa_ssid *s;
3498
3499         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3500         if (s) {
3501                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3502                 *ret_ssid_len = s->ssid_len;
3503                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3504                 return 1;
3505         }
3506
3507         return 0;
3508 }
3509
3510
3511 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3512                             u8 *ssid, size_t *ssid_len, int *group_iface)
3513 {
3514         struct wpa_supplicant *wpa_s = ctx;
3515         struct wpa_ssid *s;
3516         u8 bssid[ETH_ALEN];
3517
3518         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3519         if (!s) {
3520                 s = wpas_p2p_get_persistent_go(wpa_s);
3521                 if (s)
3522                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3523         }
3524
3525         *group_iface = wpas_p2p_create_iface(wpa_s);
3526         if (!s)
3527                 return 0;
3528
3529         os_memcpy(intended_addr, bssid, ETH_ALEN);
3530         os_memcpy(ssid, s->ssid, s->ssid_len);
3531         *ssid_len = s->ssid_len;
3532
3533         return 1;
3534 }
3535
3536
3537 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3538                                     const u8 *ssid, size_t ssid_len)
3539 {
3540         struct wpa_supplicant *wpa_s = ctx;
3541         struct wpa_ssid *s;
3542         int save_config = 0;
3543         size_t i;
3544
3545         /* Start with our first choice of Persistent Groups */
3546         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3547                 if (go && ssid && ssid_len &&
3548                     s->ssid_len == ssid_len &&
3549                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3550                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3551                         break;
3552
3553                 /* Remove stale persistent group */
3554                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3555                         wpa_config_remove_network(wpa_s->conf, s->id);
3556                         save_config = 1;
3557                         continue;
3558                 }
3559
3560                 for (i = 0; i < s->num_p2p_clients; i++) {
3561                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3562                                       peer, ETH_ALEN) != 0)
3563                                 continue;
3564
3565                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3566                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3567                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3568                         break;
3569                 }
3570                 s->num_p2p_clients--;
3571                 save_config = 1;
3572         }
3573
3574         if (save_config)
3575                 p2p_config_write(wpa_s);
3576
3577         /* Return TRUE if valid SSID remains */
3578         return s != NULL;
3579 }
3580
3581
3582 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3583                                     const u8 *adv_mac, const u8 *ses_mac,
3584                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3585                                     u8 conncap, int passwd_id,
3586                                     const u8 *persist_ssid,
3587                                     size_t persist_ssid_size, int response_done,
3588                                     int prov_start, const char *session_info)
3589 {
3590         struct wpa_supplicant *wpa_s = ctx;
3591         u8 mac[ETH_ALEN];
3592         struct wpa_ssid *persistent_go, *stale, *s;
3593         int save_config = 0;
3594         struct wpa_supplicant *go_wpa_s;
3595
3596         if (!dev)
3597                 return;
3598
3599         os_memset(mac, 0, ETH_ALEN);
3600         if (!adv_mac)
3601                 adv_mac = mac;
3602         if (!ses_mac)
3603                 ses_mac = mac;
3604         if (!grp_mac)
3605                 grp_mac = mac;
3606
3607         if (prov_start) {
3608                 if (session_info == NULL) {
3609                         wpa_msg_global(wpa_s, MSG_INFO,
3610                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3611                                        " adv_id=%x conncap=%x"
3612                                        " adv_mac=" MACSTR
3613                                        " session=%x mac=" MACSTR
3614                                        " dev_passwd_id=%d",
3615                                        MAC2STR(dev), adv_id, conncap,
3616                                        MAC2STR(adv_mac),
3617                                        ses_id, MAC2STR(ses_mac),
3618                                        passwd_id);
3619                 } else {
3620                         wpa_msg_global(wpa_s, MSG_INFO,
3621                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3622                                        " adv_id=%x conncap=%x"
3623                                        " adv_mac=" MACSTR
3624                                        " session=%x mac=" MACSTR
3625                                        " dev_passwd_id=%d info='%s'",
3626                                        MAC2STR(dev), adv_id, conncap,
3627                                        MAC2STR(adv_mac),
3628                                        ses_id, MAC2STR(ses_mac),
3629                                        passwd_id, session_info);
3630                 }
3631                 return;
3632         }
3633
3634         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3635         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3636
3637         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3638                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3639                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3640
3641                 if (persistent_go && !persistent_go->num_p2p_clients) {
3642                         /* remove empty persistent GO */
3643                         wpa_config_remove_network(wpa_s->conf,
3644                                                   persistent_go->id);
3645                 }
3646
3647                 wpa_msg_global(wpa_s, MSG_INFO,
3648                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3649                                " status=%d"
3650                                " adv_id=%x adv_mac=" MACSTR
3651                                " session=%x mac=" MACSTR,
3652                                MAC2STR(dev), status,
3653                                adv_id, MAC2STR(adv_mac),
3654                                ses_id, MAC2STR(ses_mac));
3655                 return;
3656         }
3657
3658         /* Clean up stale persistent groups with this device */
3659         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3660                                     persist_ssid_size);
3661         for (;;) {
3662                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3663                 if (!stale)
3664                         break;
3665
3666                 if (s && s->ssid_len == stale->ssid_len &&
3667                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3668                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3669                         break;
3670
3671                 /* Remove stale persistent group */
3672                 if (stale->mode != WPAS_MODE_P2P_GO ||
3673                     stale->num_p2p_clients <= 1) {
3674                         wpa_config_remove_network(wpa_s->conf, stale->id);
3675                 } else {
3676                         size_t i;
3677
3678                         for (i = 0; i < stale->num_p2p_clients; i++) {
3679                                 if (os_memcmp(stale->p2p_client_list +
3680                                               i * ETH_ALEN,
3681                                               dev, ETH_ALEN) == 0) {
3682                                         os_memmove(stale->p2p_client_list +
3683                                                    i * ETH_ALEN,
3684                                                    stale->p2p_client_list +
3685                                                    (i + 1) * ETH_ALEN,
3686                                                    (stale->num_p2p_clients -
3687                                                     i - 1) * ETH_ALEN);
3688                                         break;
3689                                 }
3690                         }
3691                         stale->num_p2p_clients--;
3692                 }
3693                 save_config = 1;
3694         }
3695
3696         if (save_config)
3697                 p2p_config_write(wpa_s);
3698
3699         if (s) {
3700                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3701                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3702
3703                 if (persistent_go && s != persistent_go &&
3704                     !persistent_go->num_p2p_clients) {
3705                         /* remove empty persistent GO */
3706                         wpa_config_remove_network(wpa_s->conf,
3707                                                   persistent_go->id);
3708                         /* Save config */
3709                 }
3710
3711                 wpa_msg_global(wpa_s, MSG_INFO,
3712                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3713                                " status=%d"
3714                                " adv_id=%x adv_mac=" MACSTR
3715                                " session=%x mac=" MACSTR
3716                                " persist=%d",
3717                                MAC2STR(dev), status,
3718                                adv_id, MAC2STR(adv_mac),
3719                                ses_id, MAC2STR(ses_mac), s->id);
3720                 return;
3721         }
3722
3723         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3724                 const char *go_ifname = NULL;
3725                 if (!go_wpa_s) {
3726                         wpa_s->global->pending_p2ps_group = 1;
3727
3728                         if (wpa_s->conf->p2p_no_group_iface)
3729                                 go_ifname = wpa_s->ifname;
3730                         else if (wpa_s->pending_interface_name[0])
3731                                 go_ifname = wpa_s->pending_interface_name;
3732
3733                         if (!go_ifname) {
3734                                 wpas_p2ps_prov_complete(
3735                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3736                                         dev, adv_mac, ses_mac,
3737                                         NULL, adv_id, ses_id, 0, 0,
3738                                         NULL, 0, 0, 0, NULL);
3739                                 return;
3740                         }
3741
3742                         /* If PD Resp complete, start up the GO */
3743                         if (response_done && persistent_go) {
3744                                 wpas_p2p_group_add_persistent(
3745                                         wpa_s, persistent_go,
3746                                         0, 0, 0, 0, 0, NULL,
3747                                         persistent_go->mode ==
3748                                         WPAS_MODE_P2P_GO ?
3749                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3750                                         0);
3751                         } else if (response_done) {
3752                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3753                         }
3754
3755                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3756                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3757                                 wpa_s->p2ps_join_addr_valid = 1;
3758                                 wpa_dbg(wpa_s, MSG_DEBUG,
3759                                         "P2PS: Saving PIN for " MACSTR,
3760                                         MAC2STR(dev));
3761                         }
3762                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3763                         go_ifname = go_wpa_s->ifname;
3764
3765                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3766                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3767                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3768                                                   NULL, 0, 0);
3769
3770                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3771                         wpa_s->p2ps_join_addr_valid = 1;
3772                         wpa_dbg(wpa_s, MSG_DEBUG,
3773                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3774                 }
3775
3776                 wpa_msg_global(wpa_s, MSG_INFO,
3777                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3778                                " status=%d conncap=%x"
3779                                " adv_id=%x adv_mac=" MACSTR
3780                                " session=%x mac=" MACSTR
3781                                " dev_passwd_id=%d go=%s",
3782                                MAC2STR(dev), status, conncap,
3783                                adv_id, MAC2STR(adv_mac),
3784                                ses_id, MAC2STR(ses_mac),
3785                                passwd_id, go_ifname);
3786                 return;
3787         }
3788
3789         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3790                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3791
3792         if (persistent_go && !persistent_go->num_p2p_clients) {
3793                 /* remove empty persistent GO */
3794                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3795         }
3796
3797         if (conncap == P2PS_SETUP_CLIENT) {
3798                 wpa_msg_global(wpa_s, MSG_INFO,
3799                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3800                                " status=%d conncap=%x"
3801                                " adv_id=%x adv_mac=" MACSTR
3802                                " session=%x mac=" MACSTR
3803                                " dev_passwd_id=%d join=" MACSTR,
3804                                MAC2STR(dev), status, conncap,
3805                                adv_id, MAC2STR(adv_mac),
3806                                ses_id, MAC2STR(ses_mac),
3807                                passwd_id, MAC2STR(grp_mac));
3808         } else {
3809                 wpa_msg_global(wpa_s, MSG_INFO,
3810                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3811                                " status=%d conncap=%x"
3812                                " adv_id=%x adv_mac=" MACSTR
3813                                " session=%x mac=" MACSTR
3814                                " dev_passwd_id=%d",
3815                                MAC2STR(dev), status, conncap,
3816                                adv_id, MAC2STR(adv_mac),
3817                                ses_id, MAC2STR(ses_mac),
3818                                passwd_id);
3819         }
3820 }
3821
3822
3823 static int _wpas_p2p_in_progress(void *ctx)
3824 {
3825         struct wpa_supplicant *wpa_s = ctx;
3826         return wpas_p2p_in_progress(wpa_s);
3827 }
3828
3829
3830 static int wpas_prov_disc_resp_cb(void *ctx)
3831 {
3832         struct wpa_supplicant *wpa_s = ctx;
3833         struct wpa_ssid *persistent_go;
3834
3835         if (!wpa_s->global->pending_p2ps_group)
3836                 return 0;
3837
3838         wpa_s->global->pending_p2ps_group = 0;
3839
3840         if (wpas_p2p_get_go_group(wpa_s))
3841                 return 0;
3842         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3843
3844         if (persistent_go) {
3845                 wpas_p2p_group_add_persistent(
3846                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3847                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3848                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3849         } else {
3850                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3851         }
3852
3853         return 1;
3854 }
3855
3856
3857 /**
3858  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3859  * @global: Pointer to global data from wpa_supplicant_init()
3860  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3861  * Returns: 0 on success, -1 on failure
3862  */
3863 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3864 {
3865         struct p2p_config p2p;
3866         int i;
3867
3868         if (wpa_s->conf->p2p_disabled)
3869                 return 0;
3870
3871         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3872                 return 0;
3873
3874         if (global->p2p)
3875                 return 0;
3876
3877         os_memset(&p2p, 0, sizeof(p2p));
3878         p2p.cb_ctx = wpa_s;
3879         p2p.debug_print = wpas_p2p_debug_print;
3880         p2p.p2p_scan = wpas_p2p_scan;
3881         p2p.send_action = wpas_send_action;
3882         p2p.send_action_done = wpas_send_action_done;
3883         p2p.go_neg_completed = wpas_go_neg_completed;
3884         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3885         p2p.dev_found = wpas_dev_found;
3886         p2p.dev_lost = wpas_dev_lost;
3887         p2p.find_stopped = wpas_find_stopped;
3888         p2p.start_listen = wpas_start_listen;
3889         p2p.stop_listen = wpas_stop_listen;
3890         p2p.send_probe_resp = wpas_send_probe_resp;
3891         p2p.sd_request = wpas_sd_request;
3892         p2p.sd_response = wpas_sd_response;
3893         p2p.prov_disc_req = wpas_prov_disc_req;
3894         p2p.prov_disc_resp = wpas_prov_disc_resp;
3895         p2p.prov_disc_fail = wpas_prov_disc_fail;
3896         p2p.invitation_process = wpas_invitation_process;
3897         p2p.invitation_received = wpas_invitation_received;
3898         p2p.invitation_result = wpas_invitation_result;
3899         p2p.get_noa = wpas_get_noa;
3900         p2p.go_connected = wpas_go_connected;
3901         p2p.presence_resp = wpas_presence_resp;
3902         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3903         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3904         p2p.get_persistent_group = wpas_get_persistent_group;
3905         p2p.get_go_info = wpas_get_go_info;
3906         p2p.remove_stale_groups = wpas_remove_stale_groups;
3907         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3908         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3909         p2p.p2ps_group_capability = p2ps_group_capability;
3910
3911         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3912         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3913         p2p.dev_name = wpa_s->conf->device_name;
3914         p2p.manufacturer = wpa_s->conf->manufacturer;
3915         p2p.model_name = wpa_s->conf->model_name;
3916         p2p.model_number = wpa_s->conf->model_number;
3917         p2p.serial_number = wpa_s->conf->serial_number;
3918         if (wpa_s->wps) {
3919                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3920                 p2p.config_methods = wpa_s->wps->config_methods;
3921         }
3922
3923         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3924                 wpa_printf(MSG_ERROR,
3925                            "P2P: Failed to configure supported channel list");
3926                 return -1;
3927         }
3928
3929         if (wpa_s->conf->p2p_listen_reg_class &&
3930             wpa_s->conf->p2p_listen_channel) {
3931                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3932                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3933                 p2p.channel_forced = 1;
3934         } else {
3935                 /*
3936                  * Pick one of the social channels randomly as the listen
3937                  * channel.
3938                  */
3939                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
3940                                                  &p2p.channel) != 0) {
3941                         wpa_printf(MSG_INFO,
3942                                    "P2P: No social channels supported by the driver - do not enable P2P");
3943                         return 0;
3944                 }
3945                 p2p.channel_forced = 0;
3946         }
3947         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
3948                    p2p.reg_class, p2p.channel);
3949
3950         if (wpa_s->conf->p2p_oper_reg_class &&
3951             wpa_s->conf->p2p_oper_channel) {
3952                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3953                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3954                 p2p.cfg_op_channel = 1;
3955                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3956                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3957
3958         } else {
3959                 /*
3960                  * Use random operation channel from 2.4 GHz band social
3961                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
3962                  * other preference is indicated.
3963                  */
3964                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
3965                                                  &p2p.op_channel) != 0) {
3966                         wpa_printf(MSG_ERROR,
3967                                    "P2P: Failed to select random social channel as operation channel");
3968                         return -1;
3969                 }
3970                 p2p.cfg_op_channel = 0;
3971                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3972                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3973         }
3974
3975         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3976                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3977                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3978         }
3979
3980         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3981                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3982                 p2p.country[2] = 0x04;
3983         } else
3984                 os_memcpy(p2p.country, "XX\x04", 3);
3985
3986         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3987                   WPS_DEV_TYPE_LEN);
3988
3989         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3990         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3991                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3992
3993         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3994                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3995
3996         p2p.max_peers = 100;
3997
3998         if (wpa_s->conf->p2p_ssid_postfix) {
3999                 p2p.ssid_postfix_len =
4000                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4001                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4002                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4003                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4004                           p2p.ssid_postfix_len);
4005         }
4006
4007         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4008
4009         p2p.max_listen = wpa_s->max_remain_on_chan;
4010
4011         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4012             wpa_s->conf->p2p_passphrase_len <= 63)
4013                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4014         else
4015                 p2p.passphrase_len = 8;
4016
4017         global->p2p = p2p_init(&p2p);
4018         if (global->p2p == NULL)
4019                 return -1;
4020         global->p2p_init_wpa_s = wpa_s;
4021
4022         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4023                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4024                         continue;
4025                 p2p_add_wps_vendor_extension(
4026                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4027         }
4028
4029         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4030
4031         return 0;
4032 }
4033
4034
4035 /**
4036  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4037  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4038  *
4039  * This function deinitialize per-interface P2P data.
4040  */
4041 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4042 {
4043         if (wpa_s->driver && wpa_s->drv_priv)
4044                 wpa_drv_probe_req_report(wpa_s, 0);
4045
4046         if (wpa_s->go_params) {
4047                 /* Clear any stored provisioning info */
4048                 p2p_clear_provisioning_info(
4049                         wpa_s->global->p2p,
4050                         wpa_s->go_params->peer_device_addr);
4051         }
4052
4053         os_free(wpa_s->go_params);
4054         wpa_s->go_params = NULL;
4055         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4056         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4057         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4058         wpa_s->p2p_long_listen = 0;
4059         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4060         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4061         wpas_p2p_remove_pending_group_interface(wpa_s);
4062         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4063         wpas_p2p_listen_work_done(wpa_s);
4064         if (wpa_s->p2p_send_action_work) {
4065                 os_free(wpa_s->p2p_send_action_work->ctx);
4066                 radio_work_done(wpa_s->p2p_send_action_work);
4067                 wpa_s->p2p_send_action_work = NULL;
4068         }
4069         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4070
4071         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4072         wpa_s->p2p_oob_dev_pw = NULL;
4073
4074         os_free(wpa_s->p2p_group_common_freqs);
4075         wpa_s->p2p_group_common_freqs = NULL;
4076         wpa_s->p2p_group_common_freqs_num = 0;
4077
4078         /* TODO: remove group interface from the driver if this wpa_s instance
4079          * is on top of a P2P group interface */
4080 }
4081
4082
4083 /**
4084  * wpas_p2p_deinit_global - Deinitialize global P2P module
4085  * @global: Pointer to global data from wpa_supplicant_init()
4086  *
4087  * This function deinitializes the global (per device) P2P module.
4088  */
4089 static void wpas_p2p_deinit_global(struct wpa_global *global)
4090 {
4091         struct wpa_supplicant *wpa_s, *tmp;
4092
4093         wpa_s = global->ifaces;
4094
4095         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4096
4097         /* Remove remaining P2P group interfaces */
4098         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4099                 wpa_s = wpa_s->next;
4100         while (wpa_s) {
4101                 tmp = global->ifaces;
4102                 while (tmp &&
4103                        (tmp == wpa_s ||
4104                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4105                         tmp = tmp->next;
4106                 }
4107                 if (tmp == NULL)
4108                         break;
4109                 /* Disconnect from the P2P group and deinit the interface */
4110                 wpas_p2p_disconnect(tmp);
4111         }
4112
4113         /*
4114          * Deinit GO data on any possibly remaining interface (if main
4115          * interface is used as GO).
4116          */
4117         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4118                 if (wpa_s->ap_iface)
4119                         wpas_p2p_group_deinit(wpa_s);
4120         }
4121
4122         p2p_deinit(global->p2p);
4123         global->p2p = NULL;
4124         global->p2p_init_wpa_s = NULL;
4125 }
4126
4127
4128 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4129 {
4130         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4131             wpa_s->conf->p2p_no_group_iface)
4132                 return 0; /* separate interface disabled per configuration */
4133         if (wpa_s->drv_flags &
4134             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4135              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4136                 return 1; /* P2P group requires a new interface in every case
4137                            */
4138         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4139                 return 0; /* driver does not support concurrent operations */
4140         if (wpa_s->global->ifaces->next)
4141                 return 1; /* more that one interface already in use */
4142         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4143                 return 1; /* this interface is already in use */
4144         return 0;
4145 }
4146
4147
4148 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4149                                  const u8 *peer_addr,
4150                                  enum p2p_wps_method wps_method,
4151                                  int go_intent, const u8 *own_interface_addr,
4152                                  unsigned int force_freq, int persistent_group,
4153                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4154 {
4155         if (persistent_group && wpa_s->conf->persistent_reconnect)
4156                 persistent_group = 2;
4157
4158         /*
4159          * Increase GO config timeout if HT40 is used since it takes some time
4160          * to scan channels for coex purposes before the BSS can be started.
4161          */
4162         p2p_set_config_timeout(wpa_s->global->p2p,
4163                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4164
4165         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4166                            go_intent, own_interface_addr, force_freq,
4167                            persistent_group, ssid ? ssid->ssid : NULL,
4168                            ssid ? ssid->ssid_len : 0,
4169                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4170                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4171                            0);
4172 }
4173
4174
4175 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4176                                 const u8 *peer_addr,
4177                                 enum p2p_wps_method wps_method,
4178                                 int go_intent, const u8 *own_interface_addr,
4179                                 unsigned int force_freq, int persistent_group,
4180                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4181 {
4182         if (persistent_group && wpa_s->conf->persistent_reconnect)
4183                 persistent_group = 2;
4184
4185         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4186                              go_intent, own_interface_addr, force_freq,
4187                              persistent_group, ssid ? ssid->ssid : NULL,
4188                              ssid ? ssid->ssid_len : 0, pref_freq,
4189                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4190                              0);
4191 }
4192
4193
4194 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4195 {
4196         wpa_s->p2p_join_scan_count++;
4197         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4198                    wpa_s->p2p_join_scan_count);
4199         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4200                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4201                            " for join operationg - stop join attempt",
4202                            MAC2STR(wpa_s->pending_join_iface_addr));
4203                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4204                 if (wpa_s->p2p_auto_pd) {
4205                         wpa_s->p2p_auto_pd = 0;
4206                         wpa_msg_global(wpa_s, MSG_INFO,
4207                                        P2P_EVENT_PROV_DISC_FAILURE
4208                                        " p2p_dev_addr=" MACSTR " status=N/A",
4209                                        MAC2STR(wpa_s->pending_join_dev_addr));
4210                         return;
4211                 }
4212                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4213                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4214         }
4215 }
4216
4217
4218 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4219 {
4220         int res;
4221         unsigned int num, i;
4222         struct wpa_used_freq_data *freqs;
4223
4224         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4225                 /* Multiple channels are supported and not all are in use */
4226                 return 0;
4227         }
4228
4229         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4230                           sizeof(struct wpa_used_freq_data));
4231         if (!freqs)
4232                 return 1;
4233
4234         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4235                                         wpa_s->num_multichan_concurrent);
4236
4237         for (i = 0; i < num; i++) {
4238                 if (freqs[i].freq == freq) {
4239                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4240                                    freq);
4241                         res = 0;
4242                         goto exit_free;
4243                 }
4244         }
4245
4246         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4247         res = 1;
4248
4249 exit_free:
4250         os_free(freqs);
4251         return res;
4252 }
4253
4254
4255 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4256                             const u8 *peer_dev_addr)
4257 {
4258         struct wpa_bss *bss;
4259         int updated;
4260
4261         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4262         if (bss == NULL)
4263                 return -1;
4264         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4265                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4266                            "last scan");
4267                 return 0;
4268         }
4269
4270         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4271                                     &bss->last_update);
4272         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4273                    "%ld.%06ld (%supdated in last scan)",
4274                    bss->last_update.sec, bss->last_update.usec,
4275                    updated ? "": "not ");
4276
4277         return updated;
4278 }
4279
4280
4281 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4282                                    struct wpa_scan_results *scan_res)
4283 {
4284         struct wpa_bss *bss = NULL;
4285         int freq;
4286         u8 iface_addr[ETH_ALEN];
4287
4288         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4289
4290         if (wpa_s->global->p2p_disabled)
4291                 return;
4292
4293         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4294                    scan_res ? (int) scan_res->num : -1,
4295                    wpa_s->p2p_auto_join ? "auto_" : "");
4296
4297         if (scan_res)
4298                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4299
4300         if (wpa_s->p2p_auto_pd) {
4301                 int join = wpas_p2p_peer_go(wpa_s,
4302                                             wpa_s->pending_join_dev_addr);
4303                 if (join == 0 &&
4304                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4305                         wpa_s->auto_pd_scan_retry++;
4306                         bss = wpa_bss_get_bssid_latest(
4307                                 wpa_s, wpa_s->pending_join_dev_addr);
4308                         if (bss) {
4309                                 freq = bss->freq;
4310                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4311                                            "the peer " MACSTR " at %d MHz",
4312                                            wpa_s->auto_pd_scan_retry,
4313                                            MAC2STR(wpa_s->
4314                                                    pending_join_dev_addr),
4315                                            freq);
4316                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4317                                 return;
4318                         }
4319                 }
4320
4321                 if (join < 0)
4322                         join = 0;
4323
4324                 wpa_s->p2p_auto_pd = 0;
4325                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4326                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4327                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4328                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4329                                       wpa_s->pending_join_dev_addr, NULL,
4330                                       wpa_s->pending_pd_config_methods, join,
4331                                       0, wpa_s->user_initiated_pd) < 0) {
4332                         wpa_s->p2p_auto_pd = 0;
4333                         wpa_msg_global(wpa_s, MSG_INFO,
4334                                        P2P_EVENT_PROV_DISC_FAILURE
4335                                        " p2p_dev_addr=" MACSTR " status=N/A",
4336                                        MAC2STR(wpa_s->pending_join_dev_addr));
4337                 }
4338                 return;
4339         }
4340
4341         if (wpa_s->p2p_auto_join) {
4342                 int join = wpas_p2p_peer_go(wpa_s,
4343                                             wpa_s->pending_join_dev_addr);
4344                 if (join < 0) {
4345                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4346                                    "running a GO -> use GO Negotiation");
4347                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4348                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4349                                        "reason=peer-not-running-GO");
4350                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4351                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4352                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4353                                          wpa_s->p2p_go_intent,
4354                                          wpa_s->p2p_connect_freq,
4355                                          wpa_s->p2p_persistent_id,
4356                                          wpa_s->p2p_pd_before_go_neg,
4357                                          wpa_s->p2p_go_ht40,
4358                                          wpa_s->p2p_go_vht);
4359                         return;
4360                 }
4361
4362                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4363                            "try to join the group", join ? "" :
4364                            " in older scan");
4365                 if (!join) {
4366                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4367                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4368                         wpa_s->p2p_fallback_to_go_neg = 1;
4369                 }
4370         }
4371
4372         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4373                                  wpa_s->pending_join_iface_addr);
4374         if (freq < 0 &&
4375             p2p_get_interface_addr(wpa_s->global->p2p,
4376                                    wpa_s->pending_join_dev_addr,
4377                                    iface_addr) == 0 &&
4378             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4379             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4380                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4381                            "address for join from " MACSTR " to " MACSTR
4382                            " based on newly discovered P2P peer entry",
4383                            MAC2STR(wpa_s->pending_join_iface_addr),
4384                            MAC2STR(iface_addr));
4385                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4386                           ETH_ALEN);
4387
4388                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4389                                          wpa_s->pending_join_iface_addr);
4390         }
4391         if (freq >= 0) {
4392                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4393                            "from P2P peer table: %d MHz", freq);
4394         }
4395         if (wpa_s->p2p_join_ssid_len) {
4396                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4397                            MACSTR " and SSID %s",
4398                            MAC2STR(wpa_s->pending_join_iface_addr),
4399                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4400                                         wpa_s->p2p_join_ssid_len));
4401                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4402                                   wpa_s->p2p_join_ssid,
4403                                   wpa_s->p2p_join_ssid_len);
4404         }
4405         if (!bss) {
4406                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4407                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4408                 bss = wpa_bss_get_bssid_latest(wpa_s,
4409                                                wpa_s->pending_join_iface_addr);
4410         }
4411         if (bss) {
4412                 freq = bss->freq;
4413                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4414                            "from BSS table: %d MHz (SSID %s)", freq,
4415                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4416         }
4417         if (freq > 0) {
4418                 u16 method;
4419
4420                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4421                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4422                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4423                                        "reason=FREQ_CONFLICT");
4424                         return;
4425                 }
4426
4427                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4428                            "prior to joining an existing group (GO " MACSTR
4429                            " freq=%u MHz)",
4430                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4431                 wpa_s->pending_pd_before_join = 1;
4432
4433                 switch (wpa_s->pending_join_wps_method) {
4434                 case WPS_PIN_DISPLAY:
4435                         method = WPS_CONFIG_KEYPAD;
4436                         break;
4437                 case WPS_PIN_KEYPAD:
4438                         method = WPS_CONFIG_DISPLAY;
4439                         break;
4440                 case WPS_PBC:
4441                         method = WPS_CONFIG_PUSHBUTTON;
4442                         break;
4443                 default:
4444                         method = 0;
4445                         break;
4446                 }
4447
4448                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4449                                                wpa_s->pending_join_dev_addr) ==
4450                      method)) {
4451                         /*
4452                          * We have already performed provision discovery for
4453                          * joining the group. Proceed directly to join
4454                          * operation without duplicated provision discovery. */
4455                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4456                                    "with " MACSTR " already done - proceed to "
4457                                    "join",
4458                                    MAC2STR(wpa_s->pending_join_dev_addr));
4459                         wpa_s->pending_pd_before_join = 0;
4460                         goto start;
4461                 }
4462
4463                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4464                                       wpa_s->pending_join_dev_addr,
4465                                       NULL, method, 1,
4466                                       freq, wpa_s->user_initiated_pd) < 0) {
4467                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4468                                    "Discovery Request before joining an "
4469                                    "existing group");
4470                         wpa_s->pending_pd_before_join = 0;
4471                         goto start;
4472                 }
4473                 return;
4474         }
4475
4476         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4477         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4478         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4479         wpas_p2p_check_join_scan_limit(wpa_s);
4480         return;
4481
4482 start:
4483         /* Start join operation immediately */
4484         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4485 }
4486
4487
4488 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4489                                    const u8 *ssid, size_t ssid_len)
4490 {
4491         int ret;
4492         struct wpa_driver_scan_params params;
4493         struct wpabuf *wps_ie, *ies;
4494         size_t ielen;
4495         int freqs[2] = { 0, 0 };
4496
4497         os_memset(&params, 0, sizeof(params));
4498
4499         /* P2P Wildcard SSID */
4500         params.num_ssids = 1;
4501         if (ssid && ssid_len) {
4502                 params.ssids[0].ssid = ssid;
4503                 params.ssids[0].ssid_len = ssid_len;
4504                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4505                 wpa_s->p2p_join_ssid_len = ssid_len;
4506         } else {
4507                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4508                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4509                 wpa_s->p2p_join_ssid_len = 0;
4510         }
4511
4512         wpa_s->wps->dev.p2p = 1;
4513         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4514                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4515                                         NULL);
4516         if (wps_ie == NULL) {
4517                 wpas_p2p_scan_res_join(wpa_s, NULL);
4518                 return;
4519         }
4520
4521         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4522         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4523         if (ies == NULL) {
4524                 wpabuf_free(wps_ie);
4525                 wpas_p2p_scan_res_join(wpa_s, NULL);
4526                 return;
4527         }
4528         wpabuf_put_buf(ies, wps_ie);
4529         wpabuf_free(wps_ie);
4530
4531         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4532
4533         params.p2p_probe = 1;
4534         params.extra_ies = wpabuf_head(ies);
4535         params.extra_ies_len = wpabuf_len(ies);
4536
4537         if (!freq) {
4538                 int oper_freq;
4539                 /*
4540                  * If freq is not provided, check the operating freq of the GO
4541                  * and use a single channel scan on if possible.
4542                  */
4543                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4544                                               wpa_s->pending_join_iface_addr);
4545                 if (oper_freq > 0)
4546                         freq = oper_freq;
4547         }
4548         if (freq > 0) {
4549                 freqs[0] = freq;
4550                 params.freqs = freqs;
4551         }
4552
4553         /*
4554          * Run a scan to update BSS table and start Provision Discovery once
4555          * the new scan results become available.
4556          */
4557         ret = wpa_drv_scan(wpa_s, &params);
4558         if (!ret) {
4559                 os_get_reltime(&wpa_s->scan_trigger_time);
4560                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4561                 wpa_s->own_scan_requested = 1;
4562         }
4563
4564         wpabuf_free(ies);
4565
4566         if (ret) {
4567                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4568                            "try again later");
4569                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4570                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4571                 wpas_p2p_check_join_scan_limit(wpa_s);
4572         }
4573 }
4574
4575
4576 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4577 {
4578         struct wpa_supplicant *wpa_s = eloop_ctx;
4579         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4580 }
4581
4582
4583 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4584                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4585                          int auto_join, int op_freq,
4586                          const u8 *ssid, size_t ssid_len)
4587 {
4588         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4589                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4590                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4591                    auto_join ? " (auto_join)" : "");
4592         if (ssid && ssid_len) {
4593                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4594                            wpa_ssid_txt(ssid, ssid_len));
4595         }
4596
4597         wpa_s->p2p_auto_pd = 0;
4598         wpa_s->p2p_auto_join = !!auto_join;
4599         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4600         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4601         wpa_s->pending_join_wps_method = wps_method;
4602
4603         /* Make sure we are not running find during connection establishment */
4604         wpas_p2p_stop_find(wpa_s);
4605
4606         wpa_s->p2p_join_scan_count = 0;
4607         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4608         return 0;
4609 }
4610
4611
4612 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4613                                const u8 *ssid, size_t ssid_len)
4614 {
4615         struct wpa_supplicant *group;
4616         struct p2p_go_neg_results res;
4617         struct wpa_bss *bss;
4618
4619         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4620         if (group == NULL)
4621                 return -1;
4622         if (group != wpa_s) {
4623                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4624                           sizeof(group->p2p_pin));
4625                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4626         } else {
4627                 /*
4628                  * Need to mark the current interface for p2p_group_formation
4629                  * when a separate group interface is not used. This is needed
4630                  * to allow p2p_cancel stop a pending p2p_connect-join.
4631                  * wpas_p2p_init_group_interface() addresses this for the case
4632                  * where a separate group interface is used.
4633                  */
4634                 wpa_s->global->p2p_group_formation = wpa_s;
4635         }
4636
4637         group->p2p_in_provisioning = 1;
4638         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4639
4640         os_memset(&res, 0, sizeof(res));
4641         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4642         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4643                   ETH_ALEN);
4644         res.wps_method = wpa_s->pending_join_wps_method;
4645         if (freq && ssid && ssid_len) {
4646                 res.freq = freq;
4647                 res.ssid_len = ssid_len;
4648                 os_memcpy(res.ssid, ssid, ssid_len);
4649         } else {
4650                 bss = wpa_bss_get_bssid_latest(wpa_s,
4651                                                wpa_s->pending_join_iface_addr);
4652                 if (bss) {
4653                         res.freq = bss->freq;
4654                         res.ssid_len = bss->ssid_len;
4655                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4656                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4657                                    bss->freq,
4658                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4659                 }
4660         }
4661
4662         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4663                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4664                            "starting client");
4665                 wpa_drv_cancel_remain_on_channel(wpa_s);
4666                 wpa_s->off_channel_freq = 0;
4667                 wpa_s->roc_waiting_drv_freq = 0;
4668         }
4669         wpas_start_wps_enrollee(group, &res);
4670
4671         /*
4672          * Allow a longer timeout for join-a-running-group than normal 15
4673          * second group formation timeout since the GO may not have authorized
4674          * our connection yet.
4675          */
4676         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4677         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4678                                wpa_s, NULL);
4679
4680         return 0;
4681 }
4682
4683
4684 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4685                                 int *force_freq, int *pref_freq, int go)
4686 {
4687         struct wpa_used_freq_data *freqs;
4688         int res, best_freq, num_unused;
4689         unsigned int freq_in_use = 0, num, i;
4690
4691         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4692                           sizeof(struct wpa_used_freq_data));
4693         if (!freqs)
4694                 return -1;
4695
4696         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4697                                         wpa_s->num_multichan_concurrent);
4698
4699         /*
4700          * It is possible that the total number of used frequencies is bigger
4701          * than the number of frequencies used for P2P, so get the system wide
4702          * number of unused frequencies.
4703          */
4704         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4705
4706         wpa_printf(MSG_DEBUG,
4707                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4708                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4709
4710         if (freq > 0) {
4711                 int ret;
4712                 if (go)
4713                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4714                 else
4715                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4716                 if (!ret) {
4717                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4718                             ieee80211_is_dfs(freq)) {
4719                                 /*
4720                                  * If freq is a DFS channel and DFS is offloaded
4721                                  * to the driver, allow P2P GO to use it.
4722                                  */
4723                                 wpa_printf(MSG_DEBUG,
4724                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4725                                            freq);
4726                         } else {
4727                                 wpa_printf(MSG_DEBUG,
4728                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4729                                            freq);
4730                                 res = -3;
4731                                 goto exit_free;
4732                         }
4733                 }
4734
4735                 for (i = 0; i < num; i++) {
4736                         if (freqs[i].freq == freq)
4737                                 freq_in_use = 1;
4738                 }
4739
4740                 if (num_unused <= 0 && !freq_in_use) {
4741                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4742                                    freq);
4743                         res = -2;
4744                         goto exit_free;
4745                 }
4746                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4747                            "requested channel (%u MHz)", freq);
4748                 *force_freq = freq;
4749                 goto exit_ok;
4750         }
4751
4752         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4753
4754         /* We have a candidate frequency to use */
4755         if (best_freq > 0) {
4756                 if (*pref_freq == 0 && num_unused > 0) {
4757                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4758                                    best_freq);
4759                         *pref_freq = best_freq;
4760                 } else {
4761                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4762                                    best_freq);
4763                         *force_freq = best_freq;
4764                 }
4765         } else if (num_unused > 0) {
4766                 wpa_printf(MSG_DEBUG,
4767                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4768                 *force_freq = 0;
4769         } else {
4770                 wpa_printf(MSG_DEBUG,
4771                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4772                 res = -2;
4773                 goto exit_free;
4774         }
4775
4776 exit_ok:
4777         res = 0;
4778 exit_free:
4779         os_free(freqs);
4780         return res;
4781 }
4782
4783
4784 /**
4785  * wpas_p2p_connect - Request P2P Group Formation to be started
4786  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4787  * @peer_addr: Address of the peer P2P Device
4788  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4789  * @persistent_group: Whether to create a persistent group
4790  * @auto_join: Whether to select join vs. GO Negotiation automatically
4791  * @join: Whether to join an existing group (as a client) instead of starting
4792  *      Group Owner negotiation; @peer_addr is BSSID in that case
4793  * @auth: Whether to only authorize the connection instead of doing that and
4794  *      initiating Group Owner negotiation
4795  * @go_intent: GO Intent or -1 to use default
4796  * @freq: Frequency for the group or 0 for auto-selection
4797  * @persistent_id: Persistent group credentials to use for forcing GO
4798  *      parameters or -1 to generate new values (SSID/passphrase)
4799  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4800  *      interoperability workaround when initiating group formation
4801  * @ht40: Start GO with 40 MHz channel width
4802  * @vht:  Start GO with VHT support
4803  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4804  *      failure, -2 on failure due to channel not currently available,
4805  *      -3 if forced channel is not supported
4806  */
4807 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4808                      const char *pin, enum p2p_wps_method wps_method,
4809                      int persistent_group, int auto_join, int join, int auth,
4810                      int go_intent, int freq, int persistent_id, int pd,
4811                      int ht40, int vht)
4812 {
4813         int force_freq = 0, pref_freq = 0;
4814         int ret = 0, res;
4815         enum wpa_driver_if_type iftype;
4816         const u8 *if_addr;
4817         struct wpa_ssid *ssid = NULL;
4818
4819         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4820                 return -1;
4821
4822         if (persistent_id >= 0) {
4823                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4824                 if (ssid == NULL || ssid->disabled != 2 ||
4825                     ssid->mode != WPAS_MODE_P2P_GO)
4826                         return -1;
4827         }
4828
4829         os_free(wpa_s->global->add_psk);
4830         wpa_s->global->add_psk = NULL;
4831
4832         wpa_s->global->p2p_fail_on_wps_complete = 0;
4833         wpa_s->global->pending_p2ps_group = 0;
4834
4835         if (go_intent < 0)
4836                 go_intent = wpa_s->conf->p2p_go_intent;
4837
4838         if (!auth)
4839                 wpa_s->p2p_long_listen = 0;
4840
4841         wpa_s->p2p_wps_method = wps_method;
4842         wpa_s->p2p_persistent_group = !!persistent_group;
4843         wpa_s->p2p_persistent_id = persistent_id;
4844         wpa_s->p2p_go_intent = go_intent;
4845         wpa_s->p2p_connect_freq = freq;
4846         wpa_s->p2p_fallback_to_go_neg = 0;
4847         wpa_s->p2p_pd_before_go_neg = !!pd;
4848         wpa_s->p2p_go_ht40 = !!ht40;
4849         wpa_s->p2p_go_vht = !!vht;
4850
4851         if (pin)
4852                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4853         else if (wps_method == WPS_PIN_DISPLAY) {
4854                 ret = wps_generate_pin();
4855                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4856                                   "%08d", ret);
4857                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4858                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4859                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4860                            wpa_s->p2p_pin);
4861         } else
4862                 wpa_s->p2p_pin[0] = '\0';
4863
4864         if (join || auto_join) {
4865                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4866                 if (auth) {
4867                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4868                                    "connect a running group from " MACSTR,
4869                                    MAC2STR(peer_addr));
4870                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4871                         return ret;
4872                 }
4873                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4874                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4875                                            iface_addr) < 0) {
4876                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4877                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4878                                          dev_addr);
4879                 }
4880                 if (auto_join) {
4881                         os_get_reltime(&wpa_s->p2p_auto_started);
4882                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4883                                    "%ld.%06ld",
4884                                    wpa_s->p2p_auto_started.sec,
4885                                    wpa_s->p2p_auto_started.usec);
4886                 }
4887                 wpa_s->user_initiated_pd = 1;
4888                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4889                                   auto_join, freq, NULL, 0) < 0)
4890                         return -1;
4891                 return ret;
4892         }
4893
4894         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4895                                    go_intent == 15);
4896         if (res)
4897                 return res;
4898         wpas_p2p_set_own_freq_preference(wpa_s,
4899                                          force_freq ? force_freq : pref_freq);
4900
4901         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4902
4903         if (wpa_s->create_p2p_iface) {
4904                 /* Prepare to add a new interface for the group */
4905                 iftype = WPA_IF_P2P_GROUP;
4906                 if (go_intent == 15)
4907                         iftype = WPA_IF_P2P_GO;
4908                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4909                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4910                                    "interface for the group");
4911                         return -1;
4912                 }
4913
4914                 if_addr = wpa_s->pending_interface_addr;
4915         } else
4916                 if_addr = wpa_s->own_addr;
4917
4918         if (auth) {
4919                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4920                                          go_intent, if_addr,
4921                                          force_freq, persistent_group, ssid,
4922                                          pref_freq) < 0)
4923                         return -1;
4924                 return ret;
4925         }
4926
4927         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4928                                   go_intent, if_addr, force_freq,
4929                                   persistent_group, ssid, pref_freq) < 0) {
4930                 if (wpa_s->create_p2p_iface)
4931                         wpas_p2p_remove_pending_group_interface(wpa_s);
4932                 return -1;
4933         }
4934         return ret;
4935 }
4936
4937
4938 /**
4939  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4940  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4941  * @freq: Frequency of the channel in MHz
4942  * @duration: Duration of the stay on the channel in milliseconds
4943  *
4944  * This callback is called when the driver indicates that it has started the
4945  * requested remain-on-channel duration.
4946  */
4947 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4948                                    unsigned int freq, unsigned int duration)
4949 {
4950         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4951                 return;
4952         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)",
4953                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4954                    wpa_s->roc_waiting_drv_freq, freq, duration);
4955         if (wpa_s->off_channel_freq &&
4956             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4957                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4958                               wpa_s->pending_listen_duration);
4959                 wpa_s->pending_listen_freq = 0;
4960         } else {
4961                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4962                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4963                            freq, duration);
4964         }
4965 }
4966
4967
4968 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
4969 {
4970         /* Limit maximum Listen state time based on driver limitation. */
4971         if (timeout > wpa_s->max_remain_on_chan)
4972                 timeout = wpa_s->max_remain_on_chan;
4973
4974         return p2p_listen(wpa_s->global->p2p, timeout);
4975 }
4976
4977
4978 /**
4979  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4980  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4981  * @freq: Frequency of the channel in MHz
4982  *
4983  * This callback is called when the driver indicates that a remain-on-channel
4984  * operation has been completed, i.e., the duration on the requested channel
4985  * has timed out.
4986  */
4987 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4988                                           unsigned int freq)
4989 {
4990         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4991                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4992                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4993         wpas_p2p_listen_work_done(wpa_s);
4994         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4995                 return;
4996         if (wpa_s->p2p_long_listen > 0)
4997                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4998         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4999                 return; /* P2P module started a new operation */
5000         if (offchannel_pending_action_tx(wpa_s))
5001                 return;
5002         if (wpa_s->p2p_long_listen > 0) {
5003                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5004                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5005         } else {
5006                 /*
5007                  * When listen duration is over, stop listen & update p2p_state
5008                  * to IDLE.
5009                  */
5010                 p2p_stop_listen(wpa_s->global->p2p);
5011         }
5012 }
5013
5014
5015 /**
5016  * wpas_p2p_group_remove - Remove a P2P group
5017  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5018  * @ifname: Network interface name of the group interface or "*" to remove all
5019  *      groups
5020  * Returns: 0 on success, -1 on failure
5021  *
5022  * This function is used to remove a P2P group. This can be used to disconnect
5023  * from a group in which the local end is a P2P Client or to end a P2P Group in
5024  * case the local end is the Group Owner. If a virtual network interface was
5025  * created for this group, that interface will be removed. Otherwise, only the
5026  * configured P2P group network will be removed from the interface.
5027  */
5028 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5029 {
5030         struct wpa_global *global = wpa_s->global;
5031         struct wpa_supplicant *calling_wpa_s = wpa_s;
5032
5033         if (os_strcmp(ifname, "*") == 0) {
5034                 struct wpa_supplicant *prev;
5035                 wpa_s = global->ifaces;
5036                 while (wpa_s) {
5037                         prev = wpa_s;
5038                         wpa_s = wpa_s->next;
5039                         if (prev->p2p_group_interface !=
5040                             NOT_P2P_GROUP_INTERFACE ||
5041                             (prev->current_ssid &&
5042                              prev->current_ssid->p2p_group))
5043                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5044                 }
5045                 return 0;
5046         }
5047
5048         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5049                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5050                         break;
5051         }
5052
5053         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5054 }
5055
5056
5057 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5058 {
5059         unsigned int r;
5060
5061         if (freq == 2) {
5062                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5063                            "band");
5064                 if (wpa_s->best_24_freq > 0 &&
5065                     p2p_supported_freq_go(wpa_s->global->p2p,
5066                                           wpa_s->best_24_freq)) {
5067                         freq = wpa_s->best_24_freq;
5068                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5069                                    "channel: %d MHz", freq);
5070                 } else {
5071                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5072                                 return -1;
5073                         freq = 2412 + (r % 3) * 25;
5074                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5075                                    "channel: %d MHz", freq);
5076                 }
5077         }
5078
5079         if (freq == 5) {
5080                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5081                            "band");
5082                 if (wpa_s->best_5_freq > 0 &&
5083                     p2p_supported_freq_go(wpa_s->global->p2p,
5084                                        wpa_s->best_5_freq)) {
5085                         freq = wpa_s->best_5_freq;
5086                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5087                                    "channel: %d MHz", freq);
5088                 } else {
5089                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5090                                 return -1;
5091                         freq = 5180 + (r % 4) * 20;
5092                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5093                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5094                                            "5 GHz channel for P2P group");
5095                                 return -1;
5096                         }
5097                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5098                                    "channel: %d MHz", freq);
5099                 }
5100         }
5101
5102         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5103                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5104                     ieee80211_is_dfs(freq)) {
5105                         /*
5106                          * If freq is a DFS channel and DFS is offloaded to the
5107                          * driver, allow P2P GO to use it.
5108                          */
5109                         wpa_printf(MSG_DEBUG, "P2P: "
5110                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5111                                    __func__, freq);
5112                         return freq;
5113                 }
5114                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5115                            "(%u MHz) is not supported for P2P uses",
5116                            freq);
5117                 return -1;
5118         }
5119
5120         return freq;
5121 }
5122
5123
5124 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5125                                         struct p2p_go_neg_results *params,
5126                                         const struct p2p_channels *channels)
5127 {
5128         unsigned int i, r;
5129
5130         /* first try some random selection of the social channels */
5131         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5132                 return -1;
5133
5134         for (i = 0; i < 3; i++) {
5135                 params->freq = 2412 + ((r + i) % 3) * 25;
5136                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5137                     freq_included(channels, params->freq) &&
5138                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5139                         goto out;
5140         }
5141
5142         /* try all channels in reg. class 81 */
5143         for (i = 0; i < 11; i++) {
5144                 params->freq = 2412 + i * 5;
5145                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5146                     freq_included(channels, params->freq) &&
5147                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5148                         goto out;
5149         }
5150
5151         /* try all channels in operating class 115 */
5152         for (i = 0; i < 4; i++) {
5153                 params->freq = 5180 + i * 20;
5154                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5155                     freq_included(channels, params->freq) &&
5156                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5157                         goto out;
5158         }
5159
5160         /* try all channels in operating class 124 */
5161         for (i = 0; i < 4; i++) {
5162                 params->freq = 5745 + i * 20;
5163                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5164                     freq_included(channels, params->freq) &&
5165                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5166                         goto out;
5167         }
5168
5169         /* try social channel class 180 channel 2 */
5170         params->freq = 58320 + 1 * 2160;
5171         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5172             freq_included(channels, params->freq) &&
5173             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5174                 goto out;
5175
5176         /* try all channels in reg. class 180 */
5177         for (i = 0; i < 4; i++) {
5178                 params->freq = 58320 + i * 2160;
5179                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5180                     freq_included(channels, params->freq) &&
5181                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5182                         goto out;
5183         }
5184
5185         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5186         return -1;
5187 out:
5188         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5189                    params->freq);
5190         return 0;
5191 }
5192
5193
5194 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5195                                    struct p2p_go_neg_results *params,
5196                                    int freq, int ht40, int vht,
5197                                    const struct p2p_channels *channels)
5198 {
5199         struct wpa_used_freq_data *freqs;
5200         unsigned int pref_freq, cand_freq;
5201         unsigned int num, i;
5202
5203         os_memset(params, 0, sizeof(*params));
5204         params->role_go = 1;
5205         params->ht40 = ht40;
5206         params->vht = vht;
5207         if (freq) {
5208                 if (!freq_included(channels, freq)) {
5209                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5210                                    "accepted", freq);
5211                         return -1;
5212                 }
5213                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5214                            "frequency %d MHz", freq);
5215                 params->freq = freq;
5216         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5217                    wpa_s->conf->p2p_oper_channel >= 1 &&
5218                    wpa_s->conf->p2p_oper_channel <= 11 &&
5219                    freq_included(channels,
5220                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5221                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5222                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5223                            "frequency %d MHz", params->freq);
5224         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5225                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5226                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5227                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5228                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5229                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5230                    freq_included(channels,
5231                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5232                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5233                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5234                            "frequency %d MHz", params->freq);
5235         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5236                    wpa_s->best_overall_freq > 0 &&
5237                    p2p_supported_freq_go(wpa_s->global->p2p,
5238                                          wpa_s->best_overall_freq) &&
5239                    freq_included(channels, wpa_s->best_overall_freq)) {
5240                 params->freq = wpa_s->best_overall_freq;
5241                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5242                            "channel %d MHz", params->freq);
5243         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5244                    wpa_s->best_24_freq > 0 &&
5245                    p2p_supported_freq_go(wpa_s->global->p2p,
5246                                          wpa_s->best_24_freq) &&
5247                    freq_included(channels, wpa_s->best_24_freq)) {
5248                 params->freq = wpa_s->best_24_freq;
5249                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5250                            "channel %d MHz", params->freq);
5251         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5252                    wpa_s->best_5_freq > 0 &&
5253                    p2p_supported_freq_go(wpa_s->global->p2p,
5254                                          wpa_s->best_5_freq) &&
5255                    freq_included(channels, wpa_s->best_5_freq)) {
5256                 params->freq = wpa_s->best_5_freq;
5257                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5258                            "channel %d MHz", params->freq);
5259         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5260                                                   channels))) {
5261                 params->freq = pref_freq;
5262                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5263                            "channels", params->freq);
5264         } else {
5265                 /* no preference, select some channel */
5266                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5267                         return -1;
5268         }
5269
5270         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5271                           sizeof(struct wpa_used_freq_data));
5272         if (!freqs)
5273                 return -1;
5274
5275         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5276                                         wpa_s->num_multichan_concurrent);
5277
5278         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5279
5280         /* First try the best used frequency if possible */
5281         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5282                 params->freq = cand_freq;
5283         } else if (!freq) {
5284                 /* Try any of the used frequencies */
5285                 for (i = 0; i < num; i++) {
5286                         if (freq_included(channels, freqs[i].freq)) {
5287                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5288                                            freqs[i].freq);
5289                                 params->freq = freqs[i].freq;
5290                                 break;
5291                         }
5292                 }
5293
5294                 if (i == num) {
5295                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5296                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5297                                 os_free(freqs);
5298                                 return -1;
5299                         } else {
5300                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5301                         }
5302                 }
5303         } else {
5304                 for (i = 0; i < num; i++) {
5305                         if (freqs[i].freq == freq)
5306                                 break;
5307                 }
5308
5309                 if (i == num) {
5310                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5311                                 if (freq)
5312                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5313                                 os_free(freqs);
5314                                 return -1;
5315                         } else {
5316                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5317                         }
5318                 }
5319         }
5320
5321         os_free(freqs);
5322         return 0;
5323 }
5324
5325
5326 static struct wpa_supplicant *
5327 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5328                          int go)
5329 {
5330         struct wpa_supplicant *group_wpa_s;
5331
5332         if (!wpas_p2p_create_iface(wpa_s)) {
5333                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5334                         "operations");
5335                 wpa_s->p2p_first_connection_timeout = 0;
5336                 return wpa_s;
5337         }
5338
5339         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5340                                          WPA_IF_P2P_CLIENT) < 0) {
5341                 wpa_msg_global(wpa_s, MSG_ERROR,
5342                                "P2P: Failed to add group interface");
5343                 return NULL;
5344         }
5345         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5346         if (group_wpa_s == NULL) {
5347                 wpa_msg_global(wpa_s, MSG_ERROR,
5348                                "P2P: Failed to initialize group interface");
5349                 wpas_p2p_remove_pending_group_interface(wpa_s);
5350                 return NULL;
5351         }
5352
5353         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5354                 group_wpa_s->ifname);
5355         group_wpa_s->p2p_first_connection_timeout = 0;
5356         return group_wpa_s;
5357 }
5358
5359
5360 /**
5361  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5362  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5363  * @persistent_group: Whether to create a persistent group
5364  * @freq: Frequency for the group or 0 to indicate no hardcoding
5365  * @ht40: Start GO with 40 MHz channel width
5366  * @vht:  Start GO with VHT support
5367  * Returns: 0 on success, -1 on failure
5368  *
5369  * This function creates a new P2P group with the local end as the Group Owner,
5370  * i.e., without using Group Owner Negotiation.
5371  */
5372 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5373                        int freq, int ht40, int vht)
5374 {
5375         struct p2p_go_neg_results params;
5376
5377         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5378                 return -1;
5379
5380         os_free(wpa_s->global->add_psk);
5381         wpa_s->global->add_psk = NULL;
5382
5383         /* Make sure we are not running find during connection establishment */
5384         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5385         wpas_p2p_stop_find_oper(wpa_s);
5386
5387         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5388         if (freq < 0)
5389                 return -1;
5390
5391         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5392                 return -1;
5393         if (params.freq &&
5394             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5395                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5396                     ieee80211_is_dfs(params.freq)) {
5397                         /*
5398                          * If freq is a DFS channel and DFS is offloaded to the
5399                          * driver, allow P2P GO to use it.
5400                          */
5401                         wpa_printf(MSG_DEBUG,
5402                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5403                                 __func__, params.freq);
5404                 } else {
5405                         wpa_printf(MSG_DEBUG,
5406                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5407                                    params.freq);
5408                         return -1;
5409                 }
5410         }
5411         p2p_go_params(wpa_s->global->p2p, &params);
5412         params.persistent_group = persistent_group;
5413
5414         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5415         if (wpa_s == NULL)
5416                 return -1;
5417         wpas_start_wps_go(wpa_s, &params, 0);
5418
5419         return 0;
5420 }
5421
5422
5423 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5424                                  struct wpa_ssid *params, int addr_allocated,
5425                                  int freq)
5426 {
5427         struct wpa_ssid *ssid;
5428
5429         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5430         if (wpa_s == NULL)
5431                 return -1;
5432         wpa_s->p2p_last_4way_hs_fail = NULL;
5433
5434         wpa_supplicant_ap_deinit(wpa_s);
5435
5436         ssid = wpa_config_add_network(wpa_s->conf);
5437         if (ssid == NULL)
5438                 return -1;
5439         wpa_config_set_network_defaults(ssid);
5440         ssid->temporary = 1;
5441         ssid->proto = WPA_PROTO_RSN;
5442         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5443         ssid->group_cipher = WPA_CIPHER_CCMP;
5444         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5445         ssid->ssid = os_malloc(params->ssid_len);
5446         if (ssid->ssid == NULL) {
5447                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5448                 return -1;
5449         }
5450         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5451         ssid->ssid_len = params->ssid_len;
5452         ssid->p2p_group = 1;
5453         ssid->export_keys = 1;
5454         if (params->psk_set) {
5455                 os_memcpy(ssid->psk, params->psk, 32);
5456                 ssid->psk_set = 1;
5457         }
5458         if (params->passphrase)
5459                 ssid->passphrase = os_strdup(params->passphrase);
5460
5461         wpa_s->show_group_started = 1;
5462         wpa_s->p2p_in_invitation = 1;
5463         wpa_s->p2p_invite_go_freq = freq;
5464
5465         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5466                              NULL);
5467         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5468                                wpas_p2p_group_formation_timeout,
5469                                wpa_s->parent, NULL);
5470         wpa_supplicant_select_network(wpa_s, ssid);
5471
5472         return 0;
5473 }
5474
5475
5476 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5477                                   struct wpa_ssid *ssid, int addr_allocated,
5478                                   int force_freq, int neg_freq, int ht40,
5479                                   int vht, const struct p2p_channels *channels,
5480                                   int connection_timeout)
5481 {
5482         struct p2p_go_neg_results params;
5483         int go = 0, freq;
5484
5485         if (ssid->disabled != 2 || ssid->ssid == NULL)
5486                 return -1;
5487
5488         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5489             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5490                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5491                            "already running");
5492                 return 0;
5493         }
5494
5495         os_free(wpa_s->global->add_psk);
5496         wpa_s->global->add_psk = NULL;
5497
5498         /* Make sure we are not running find during connection establishment */
5499         wpas_p2p_stop_find_oper(wpa_s);
5500
5501         wpa_s->p2p_fallback_to_go_neg = 0;
5502
5503         if (ssid->mode == WPAS_MODE_P2P_GO) {
5504                 if (force_freq > 0) {
5505                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5506                         if (freq < 0)
5507                                 return -1;
5508                 } else {
5509                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5510                         if (freq < 0 ||
5511                             (freq > 0 && !freq_included(channels, freq)))
5512                                 freq = 0;
5513                 }
5514         } else if (ssid->mode == WPAS_MODE_INFRA) {
5515                 freq = neg_freq;
5516                 if (freq <= 0 || !freq_included(channels, freq)) {
5517                         struct os_reltime now;
5518                         struct wpa_bss *bss =
5519                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5520
5521                         os_get_reltime(&now);
5522                         if (bss &&
5523                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5524                             freq_included(channels, bss->freq))
5525                                 freq = bss->freq;
5526                         else
5527                                 freq = 0;
5528                 }
5529
5530                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5531         } else {
5532                 return -1;
5533         }
5534
5535         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5536                 return -1;
5537
5538         params.role_go = 1;
5539         params.psk_set = ssid->psk_set;
5540         if (params.psk_set)
5541                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5542         if (ssid->passphrase) {
5543                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5544                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5545                                    "persistent group");
5546                         return -1;
5547                 }
5548                 os_strlcpy(params.passphrase, ssid->passphrase,
5549                            sizeof(params.passphrase));
5550         }
5551         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5552         params.ssid_len = ssid->ssid_len;
5553         params.persistent_group = 1;
5554
5555         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5556         if (wpa_s == NULL)
5557                 return -1;
5558
5559         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5560
5561         wpa_s->p2p_first_connection_timeout = connection_timeout;
5562         wpas_start_wps_go(wpa_s, &params, 0);
5563
5564         return 0;
5565 }
5566
5567
5568 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5569                                struct wpabuf *proberesp_ies)
5570 {
5571         struct wpa_supplicant *wpa_s = ctx;
5572         if (wpa_s->ap_iface) {
5573                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5574                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5575                         wpabuf_free(beacon_ies);
5576                         wpabuf_free(proberesp_ies);
5577                         return;
5578                 }
5579                 if (beacon_ies) {
5580                         wpabuf_free(hapd->p2p_beacon_ie);
5581                         hapd->p2p_beacon_ie = beacon_ies;
5582                 }
5583                 wpabuf_free(hapd->p2p_probe_resp_ie);
5584                 hapd->p2p_probe_resp_ie = proberesp_ies;
5585         } else {
5586                 wpabuf_free(beacon_ies);
5587                 wpabuf_free(proberesp_ies);
5588         }
5589         wpa_supplicant_ap_update_beacon(wpa_s);
5590 }
5591
5592
5593 static void wpas_p2p_idle_update(void *ctx, int idle)
5594 {
5595         struct wpa_supplicant *wpa_s = ctx;
5596         if (!wpa_s->ap_iface)
5597                 return;
5598         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5599         if (idle) {
5600                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5601                     wpa_s->p2p_in_provisioning) {
5602                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5603                         return;
5604                 }
5605                 wpas_p2p_set_group_idle_timeout(wpa_s);
5606         } else
5607                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5608 }
5609
5610
5611 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5612                                        struct wpa_ssid *ssid)
5613 {
5614         struct p2p_group *group;
5615         struct p2p_group_config *cfg;
5616
5617         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5618                 return NULL;
5619
5620         cfg = os_zalloc(sizeof(*cfg));
5621         if (cfg == NULL)
5622                 return NULL;
5623
5624         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5625                 cfg->persistent_group = 2;
5626         else if (ssid->p2p_persistent_group)
5627                 cfg->persistent_group = 1;
5628         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5629         if (wpa_s->max_stations &&
5630             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5631                 cfg->max_clients = wpa_s->max_stations;
5632         else
5633                 cfg->max_clients = wpa_s->conf->max_num_sta;
5634         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5635         cfg->ssid_len = ssid->ssid_len;
5636         cfg->freq = ssid->frequency;
5637         cfg->cb_ctx = wpa_s;
5638         cfg->ie_update = wpas_p2p_ie_update;
5639         cfg->idle_update = wpas_p2p_idle_update;
5640
5641         group = p2p_group_init(wpa_s->global->p2p, cfg);
5642         if (group == NULL)
5643                 os_free(cfg);
5644         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5645                 p2p_group_notif_formation_done(group);
5646         wpa_s->p2p_group = group;
5647         return group;
5648 }
5649
5650
5651 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5652                           int registrar)
5653 {
5654         struct wpa_ssid *ssid = wpa_s->current_ssid;
5655
5656         if (!wpa_s->p2p_in_provisioning) {
5657                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5658                            "provisioning not in progress");
5659                 return;
5660         }
5661
5662         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5663                 u8 go_dev_addr[ETH_ALEN];
5664                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5665                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5666                                           ssid->ssid_len);
5667                 /* Clear any stored provisioning info */
5668                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5669         }
5670
5671         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5672                              NULL);
5673         wpa_s->p2p_go_group_formation_completed = 1;
5674         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5675                 /*
5676                  * Use a separate timeout for initial data connection to
5677                  * complete to allow the group to be removed automatically if
5678                  * something goes wrong in this step before the P2P group idle
5679                  * timeout mechanism is taken into use.
5680                  */
5681                 wpa_dbg(wpa_s, MSG_DEBUG,
5682                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5683                         P2P_MAX_INITIAL_CONN_WAIT);
5684                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5685                                        wpas_p2p_group_formation_timeout,
5686                                        wpa_s->parent, NULL);
5687         } else if (ssid) {
5688                 /*
5689                  * Use a separate timeout for initial data connection to
5690                  * complete to allow the group to be removed automatically if
5691                  * the client does not complete data connection successfully.
5692                  */
5693                 wpa_dbg(wpa_s, MSG_DEBUG,
5694                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5695                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5696                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5697                                        wpas_p2p_group_formation_timeout,
5698                                        wpa_s->parent, NULL);
5699                 /*
5700                  * Complete group formation on first successful data connection
5701                  */
5702                 wpa_s->p2p_go_group_formation_completed = 0;
5703         }
5704         if (wpa_s->global->p2p)
5705                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5706         wpas_group_formation_completed(wpa_s, 1);
5707 }
5708
5709
5710 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5711                          struct wps_event_fail *fail)
5712 {
5713         if (!wpa_s->p2p_in_provisioning) {
5714                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5715                            "provisioning not in progress");
5716                 return;
5717         }
5718
5719         if (wpa_s->go_params) {
5720                 p2p_clear_provisioning_info(
5721                         wpa_s->global->p2p,
5722                         wpa_s->go_params->peer_device_addr);
5723         }
5724
5725         wpas_notify_p2p_wps_failed(wpa_s, fail);
5726
5727         if (wpa_s == wpa_s->global->p2p_group_formation) {
5728                 /*
5729                  * Allow some time for the failed WPS negotiation exchange to
5730                  * complete, but remove the group since group formation cannot
5731                  * succeed after provisioning failure.
5732                  */
5733                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5734                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5735                 eloop_deplete_timeout(0, 50000,
5736                                       wpas_p2p_group_formation_timeout,
5737                                       wpa_s->parent, NULL);
5738         }
5739 }
5740
5741
5742 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5743 {
5744         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5745             !wpa_s->p2p_in_provisioning)
5746                 return 0;
5747
5748         wpas_p2p_grpform_fail_after_wps(wpa_s);
5749
5750         return 1;
5751 }
5752
5753
5754 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5755                        const char *config_method,
5756                        enum wpas_p2p_prov_disc_use use,
5757                        struct p2ps_provision *p2ps_prov)
5758 {
5759         u16 config_methods;
5760
5761         wpa_s->global->pending_p2ps_group = 0;
5762         wpa_s->p2p_fallback_to_go_neg = 0;
5763         wpa_s->pending_pd_use = NORMAL_PD;
5764         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5765                 p2ps_prov->conncap = p2ps_group_capability(
5766                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5767                 wpa_printf(MSG_DEBUG,
5768                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5769                            __func__, p2ps_prov->conncap,
5770                            p2ps_prov->adv_id, p2ps_prov->conncap,
5771                            p2ps_prov->status, p2ps_prov->info);
5772
5773                 config_methods = 0;
5774         } else if (os_strncmp(config_method, "display", 7) == 0)
5775                 config_methods = WPS_CONFIG_DISPLAY;
5776         else if (os_strncmp(config_method, "keypad", 6) == 0)
5777                 config_methods = WPS_CONFIG_KEYPAD;
5778         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5779                  os_strncmp(config_method, "pushbutton", 10) == 0)
5780                 config_methods = WPS_CONFIG_PUSHBUTTON;
5781         else {
5782                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5783                 os_free(p2ps_prov);
5784                 return -1;
5785         }
5786
5787         if (use == WPAS_P2P_PD_AUTO) {
5788                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5789                 wpa_s->pending_pd_config_methods = config_methods;
5790                 wpa_s->p2p_auto_pd = 1;
5791                 wpa_s->p2p_auto_join = 0;
5792                 wpa_s->pending_pd_before_join = 0;
5793                 wpa_s->auto_pd_scan_retry = 0;
5794                 wpas_p2p_stop_find(wpa_s);
5795                 wpa_s->p2p_join_scan_count = 0;
5796                 os_get_reltime(&wpa_s->p2p_auto_started);
5797                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5798                            wpa_s->p2p_auto_started.sec,
5799                            wpa_s->p2p_auto_started.usec);
5800                 wpas_p2p_join_scan(wpa_s, NULL);
5801                 return 0;
5802         }
5803
5804         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5805                 os_free(p2ps_prov);
5806                 return -1;
5807         }
5808
5809         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5810                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5811                                  0, 1);
5812 }
5813
5814
5815 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5816                               char *end)
5817 {
5818         return p2p_scan_result_text(ies, ies_len, buf, end);
5819 }
5820
5821
5822 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5823 {
5824         if (!offchannel_pending_action_tx(wpa_s))
5825                 return;
5826
5827         wpas_p2p_action_tx_clear(wpa_s);
5828
5829         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5830                    "operation request");
5831         offchannel_clear_pending_action_tx(wpa_s);
5832 }
5833
5834
5835 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5836                   enum p2p_discovery_type type,
5837                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5838                   const u8 *dev_id, unsigned int search_delay,
5839                   u8 seek_cnt, const char **seek_string, int freq)
5840 {
5841         wpas_p2p_clear_pending_action_tx(wpa_s);
5842         wpa_s->p2p_long_listen = 0;
5843
5844         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5845             wpa_s->p2p_in_provisioning)
5846                 return -1;
5847
5848         wpa_supplicant_cancel_sched_scan(wpa_s);
5849
5850         return p2p_find(wpa_s->global->p2p, timeout, type,
5851                         num_req_dev_types, req_dev_types, dev_id,
5852                         search_delay, seek_cnt, seek_string, freq);
5853 }
5854
5855
5856 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5857                                             struct wpa_scan_results *scan_res)
5858 {
5859         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5860
5861         if (wpa_s->p2p_scan_work) {
5862                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5863                 wpa_s->p2p_scan_work = NULL;
5864                 radio_work_done(work);
5865         }
5866
5867         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5868                 return;
5869
5870         /*
5871          * Indicate that results have been processed so that the P2P module can
5872          * continue pending tasks.
5873          */
5874         p2p_scan_res_handled(wpa_s->global->p2p);
5875 }
5876
5877
5878 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5879 {
5880         wpas_p2p_clear_pending_action_tx(wpa_s);
5881         wpa_s->p2p_long_listen = 0;
5882         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5883         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5884
5885         if (wpa_s->global->p2p)
5886                 p2p_stop_find(wpa_s->global->p2p);
5887
5888         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5889                 wpa_printf(MSG_DEBUG,
5890                            "P2P: Do not consider the scan results after stop_find");
5891                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5892         }
5893 }
5894
5895
5896 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5897 {
5898         wpas_p2p_stop_find_oper(wpa_s);
5899         if (!wpa_s->global->pending_group_iface_for_p2ps)
5900                 wpas_p2p_remove_pending_group_interface(wpa_s);
5901 }
5902
5903
5904 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5905 {
5906         struct wpa_supplicant *wpa_s = eloop_ctx;
5907         wpa_s->p2p_long_listen = 0;
5908 }
5909
5910
5911 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5912 {
5913         int res;
5914
5915         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5916                 return -1;
5917
5918         wpa_supplicant_cancel_sched_scan(wpa_s);
5919         wpas_p2p_clear_pending_action_tx(wpa_s);
5920
5921         if (timeout == 0) {
5922                 /*
5923                  * This is a request for unlimited Listen state. However, at
5924                  * least for now, this is mapped to a Listen state for one
5925                  * hour.
5926                  */
5927                 timeout = 3600;
5928         }
5929         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5930         wpa_s->p2p_long_listen = 0;
5931
5932         /*
5933          * Stop previous find/listen operation to avoid trying to request a new
5934          * remain-on-channel operation while the driver is still running the
5935          * previous one.
5936          */
5937         if (wpa_s->global->p2p)
5938                 p2p_stop_find(wpa_s->global->p2p);
5939
5940         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5941         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5942                 wpa_s->p2p_long_listen = timeout * 1000;
5943                 eloop_register_timeout(timeout, 0,
5944                                        wpas_p2p_long_listen_timeout,
5945                                        wpa_s, NULL);
5946         }
5947
5948         return res;
5949 }
5950
5951
5952 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5953                           u8 *buf, size_t len, int p2p_group)
5954 {
5955         struct wpabuf *p2p_ie;
5956         int ret;
5957
5958         if (wpa_s->global->p2p_disabled)
5959                 return -1;
5960         /*
5961          * Advertize mandatory cross connection capability even on
5962          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
5963          */
5964         if (wpa_s->conf->p2p_disabled && p2p_group)
5965                 return -1;
5966         if (wpa_s->global->p2p == NULL)
5967                 return -1;
5968         if (bss == NULL)
5969                 return -1;
5970
5971         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5972         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5973                                p2p_group, p2p_ie);
5974         wpabuf_free(p2p_ie);
5975
5976         return ret;
5977 }
5978
5979
5980 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5981                           const u8 *dst, const u8 *bssid,
5982                           const u8 *ie, size_t ie_len, int ssi_signal)
5983 {
5984         if (wpa_s->global->p2p_disabled)
5985                 return 0;
5986         if (wpa_s->global->p2p == NULL)
5987                 return 0;
5988
5989         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5990                                  ie, ie_len)) {
5991         case P2P_PREQ_NOT_P2P:
5992                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5993                                  ssi_signal);
5994                 /* fall through */
5995         case P2P_PREQ_MALFORMED:
5996         case P2P_PREQ_NOT_LISTEN:
5997         case P2P_PREQ_NOT_PROCESSED:
5998         default: /* make gcc happy */
5999                 return 0;
6000         case P2P_PREQ_PROCESSED:
6001                 return 1;
6002         }
6003 }
6004
6005
6006 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6007                         const u8 *sa, const u8 *bssid,
6008                         u8 category, const u8 *data, size_t len, int freq)
6009 {
6010         if (wpa_s->global->p2p_disabled)
6011                 return;
6012         if (wpa_s->global->p2p == NULL)
6013                 return;
6014
6015         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6016                       freq);
6017 }
6018
6019
6020 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6021 {
6022         if (wpa_s->global->p2p_disabled)
6023                 return;
6024         if (wpa_s->global->p2p == NULL)
6025                 return;
6026
6027         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6028 }
6029
6030
6031 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6032 {
6033         p2p_group_deinit(wpa_s->p2p_group);
6034         wpa_s->p2p_group = NULL;
6035
6036         wpa_s->ap_configured_cb = NULL;
6037         wpa_s->ap_configured_cb_ctx = NULL;
6038         wpa_s->ap_configured_cb_data = NULL;
6039         wpa_s->connect_without_scan = NULL;
6040 }
6041
6042
6043 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6044 {
6045         wpa_s->p2p_long_listen = 0;
6046
6047         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6048                 return -1;
6049
6050         return p2p_reject(wpa_s->global->p2p, addr);
6051 }
6052
6053
6054 /* Invite to reinvoke a persistent group */
6055 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6056                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6057                     int ht40, int vht, int pref_freq)
6058 {
6059         enum p2p_invite_role role;
6060         u8 *bssid = NULL;
6061         int force_freq = 0;
6062         int res;
6063         int no_pref_freq_given = pref_freq == 0;
6064
6065         wpa_s->global->p2p_invite_group = NULL;
6066         if (peer_addr)
6067                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6068         else
6069                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6070
6071         wpa_s->p2p_persistent_go_freq = freq;
6072         wpa_s->p2p_go_ht40 = !!ht40;
6073         if (ssid->mode == WPAS_MODE_P2P_GO) {
6074                 role = P2P_INVITE_ROLE_GO;
6075                 if (peer_addr == NULL) {
6076                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6077                                    "address in invitation command");
6078                         return -1;
6079                 }
6080                 if (wpas_p2p_create_iface(wpa_s)) {
6081                         if (wpas_p2p_add_group_interface(wpa_s,
6082                                                          WPA_IF_P2P_GO) < 0) {
6083                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6084                                            "allocate a new interface for the "
6085                                            "group");
6086                                 return -1;
6087                         }
6088                         bssid = wpa_s->pending_interface_addr;
6089                 } else
6090                         bssid = wpa_s->own_addr;
6091         } else {
6092                 role = P2P_INVITE_ROLE_CLIENT;
6093                 peer_addr = ssid->bssid;
6094         }
6095         wpa_s->pending_invite_ssid_id = ssid->id;
6096
6097         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6098                                    role == P2P_INVITE_ROLE_GO);
6099         if (res)
6100                 return res;
6101
6102         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6103                 return -1;
6104
6105         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6106             no_pref_freq_given && pref_freq > 0 &&
6107             wpa_s->num_multichan_concurrent > 1 &&
6108             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6109                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6110                            pref_freq);
6111                 pref_freq = 0;
6112         }
6113
6114         /*
6115          * Stop any find/listen operations before invitation and possibly
6116          * connection establishment.
6117          */
6118         wpas_p2p_stop_find_oper(wpa_s);
6119
6120         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6121                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6122                           1, pref_freq, -1);
6123 }
6124
6125
6126 /* Invite to join an active group */
6127 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6128                           const u8 *peer_addr, const u8 *go_dev_addr)
6129 {
6130         struct wpa_global *global = wpa_s->global;
6131         enum p2p_invite_role role;
6132         u8 *bssid = NULL;
6133         struct wpa_ssid *ssid;
6134         int persistent;
6135         int freq = 0, force_freq = 0, pref_freq = 0;
6136         int res;
6137
6138         wpa_s->p2p_persistent_go_freq = 0;
6139         wpa_s->p2p_go_ht40 = 0;
6140         wpa_s->p2p_go_vht = 0;
6141
6142         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6143                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6144                         break;
6145         }
6146         if (wpa_s == NULL) {
6147                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6148                 return -1;
6149         }
6150
6151         ssid = wpa_s->current_ssid;
6152         if (ssid == NULL) {
6153                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6154                            "invitation");
6155                 return -1;
6156         }
6157
6158         wpa_s->global->p2p_invite_group = wpa_s;
6159         persistent = ssid->p2p_persistent_group &&
6160                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6161                                         ssid->ssid, ssid->ssid_len);
6162
6163         if (ssid->mode == WPAS_MODE_P2P_GO) {
6164                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6165                 bssid = wpa_s->own_addr;
6166                 if (go_dev_addr == NULL)
6167                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6168                 freq = ssid->frequency;
6169         } else {
6170                 role = P2P_INVITE_ROLE_CLIENT;
6171                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6172                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6173                                    "invite to current group");
6174                         return -1;
6175                 }
6176                 bssid = wpa_s->bssid;
6177                 if (go_dev_addr == NULL &&
6178                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6179                         go_dev_addr = wpa_s->go_dev_addr;
6180                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6181                         (int) wpa_s->assoc_freq;
6182         }
6183         wpa_s->parent->pending_invite_ssid_id = -1;
6184
6185         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6186                 return -1;
6187
6188         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6189                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6190         if (res)
6191                 return res;
6192         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6193
6194         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6195                           ssid->ssid, ssid->ssid_len, force_freq,
6196                           go_dev_addr, persistent, pref_freq, -1);
6197 }
6198
6199
6200 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6201 {
6202         struct wpa_ssid *ssid = wpa_s->current_ssid;
6203         u8 go_dev_addr[ETH_ALEN];
6204         int network_id = -1;
6205         int persistent;
6206         int freq;
6207         u8 ip[3 * 4];
6208         char ip_addr[100];
6209
6210         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6211                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6212                                      wpa_s->parent, NULL);
6213         }
6214
6215         if (!wpa_s->show_group_started || !ssid)
6216                 return;
6217
6218         wpa_s->show_group_started = 0;
6219
6220         os_memset(go_dev_addr, 0, ETH_ALEN);
6221         if (ssid->bssid_set)
6222                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6223         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6224                                                ssid->ssid_len);
6225         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6226
6227         if (wpa_s->global->p2p_group_formation == wpa_s)
6228                 wpa_s->global->p2p_group_formation = NULL;
6229
6230         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6231                 (int) wpa_s->assoc_freq;
6232
6233         ip_addr[0] = '\0';
6234         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6235                 int res;
6236
6237                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6238                                   " ip_addr=%u.%u.%u.%u "
6239                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6240                                   ip[0], ip[1], ip[2], ip[3],
6241                                   ip[4], ip[5], ip[6], ip[7],
6242                                   ip[8], ip[9], ip[10], ip[11]);
6243                 if (os_snprintf_error(sizeof(ip_addr), res))
6244                         ip_addr[0] = '\0';
6245         }
6246
6247         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6248                                ssid->passphrase == NULL && ssid->psk_set ?
6249                                ssid->psk : NULL,
6250                                ssid->passphrase, go_dev_addr, persistent,
6251                                ip_addr);
6252
6253         if (persistent)
6254                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6255                                                              ssid, go_dev_addr);
6256         if (network_id < 0)
6257                 network_id = ssid->id;
6258         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6259 }
6260
6261
6262 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6263                           u32 interval1, u32 duration2, u32 interval2)
6264 {
6265         int ret;
6266
6267         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6268                 return -1;
6269
6270         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6271             wpa_s->current_ssid == NULL ||
6272             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6273                 return -1;
6274
6275         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6276                                wpa_s->own_addr, wpa_s->assoc_freq,
6277                                duration1, interval1, duration2, interval2);
6278         if (ret == 0)
6279                 wpa_s->waiting_presence_resp = 1;
6280
6281         return ret;
6282 }
6283
6284
6285 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6286                         unsigned int interval)
6287 {
6288         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6289                 return -1;
6290
6291         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6292 }
6293
6294
6295 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6296 {
6297         if (wpa_s->current_ssid == NULL) {
6298                 /*
6299                  * current_ssid can be cleared when P2P client interface gets
6300                  * disconnected, so assume this interface was used as P2P
6301                  * client.
6302                  */
6303                 return 1;
6304         }
6305         return wpa_s->current_ssid->p2p_group &&
6306                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6307 }
6308
6309
6310 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6311 {
6312         struct wpa_supplicant *wpa_s = eloop_ctx;
6313
6314         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6315                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6316                            "disabled");
6317                 return;
6318         }
6319
6320         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6321                    "group");
6322         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6323 }
6324
6325
6326 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6327 {
6328         int timeout;
6329
6330         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6331                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6332
6333         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6334                 return;
6335
6336         timeout = wpa_s->conf->p2p_group_idle;
6337         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6338             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6339             timeout = P2P_MAX_CLIENT_IDLE;
6340
6341         if (timeout == 0)
6342                 return;
6343
6344         if (timeout < 0) {
6345                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6346                         timeout = 0; /* special client mode no-timeout */
6347                 else
6348                         return;
6349         }
6350
6351         if (wpa_s->p2p_in_provisioning) {
6352                 /*
6353                  * Use the normal group formation timeout during the
6354                  * provisioning phase to avoid terminating this process too
6355                  * early due to group idle timeout.
6356                  */
6357                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6358                            "during provisioning");
6359                 return;
6360         }
6361
6362         if (wpa_s->show_group_started) {
6363                 /*
6364                  * Use the normal group formation timeout between the end of
6365                  * the provisioning phase and completion of 4-way handshake to
6366                  * avoid terminating this process too early due to group idle
6367                  * timeout.
6368                  */
6369                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6370                            "while waiting for initial 4-way handshake to "
6371                            "complete");
6372                 return;
6373         }
6374
6375         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6376                    timeout);
6377         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6378                                wpa_s, NULL);
6379 }
6380
6381
6382 /* Returns 1 if the interface was removed */
6383 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6384                           u16 reason_code, const u8 *ie, size_t ie_len,
6385                           int locally_generated)
6386 {
6387         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6388                 return 0;
6389
6390         if (!locally_generated)
6391                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6392                                  ie_len);
6393
6394         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6395             wpa_s->current_ssid &&
6396             wpa_s->current_ssid->p2p_group &&
6397             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6398                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6399                            "session is ending");
6400                 if (wpas_p2p_group_delete(wpa_s,
6401                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6402                     > 0)
6403                         return 1;
6404         }
6405
6406         return 0;
6407 }
6408
6409
6410 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6411                              u16 reason_code, const u8 *ie, size_t ie_len,
6412                              int locally_generated)
6413 {
6414         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6415                 return;
6416
6417         if (!locally_generated)
6418                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6419                                    ie_len);
6420 }
6421
6422
6423 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6424 {
6425         struct p2p_data *p2p = wpa_s->global->p2p;
6426
6427         if (p2p == NULL)
6428                 return;
6429
6430         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6431                 return;
6432
6433         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6434                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6435
6436         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6437                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6438
6439         if (wpa_s->wps &&
6440             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6441                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6442
6443         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6444                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6445
6446         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6447                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6448                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6449                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6450                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6451         }
6452
6453         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6454                 p2p_set_sec_dev_types(p2p,
6455                                       (void *) wpa_s->conf->sec_device_type,
6456                                       wpa_s->conf->num_sec_device_types);
6457
6458         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6459                 int i;
6460                 p2p_remove_wps_vendor_extensions(p2p);
6461                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6462                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6463                                 continue;
6464                         p2p_add_wps_vendor_extension(
6465                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6466                 }
6467         }
6468
6469         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6470             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6471                 char country[3];
6472                 country[0] = wpa_s->conf->country[0];
6473                 country[1] = wpa_s->conf->country[1];
6474                 country[2] = 0x04;
6475                 p2p_set_country(p2p, country);
6476         }
6477
6478         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6479                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6480                                      wpa_s->conf->p2p_ssid_postfix ?
6481                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6482                                      0);
6483         }
6484
6485         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6486                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6487
6488         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6489                 u8 reg_class, channel;
6490                 int ret;
6491                 unsigned int r;
6492                 u8 channel_forced;
6493
6494                 if (wpa_s->conf->p2p_listen_reg_class &&
6495                     wpa_s->conf->p2p_listen_channel) {
6496                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6497                         channel = wpa_s->conf->p2p_listen_channel;
6498                         channel_forced = 1;
6499                 } else {
6500                         reg_class = 81;
6501                         /*
6502                          * Pick one of the social channels randomly as the
6503                          * listen channel.
6504                          */
6505                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6506                                 channel = 1;
6507                         else
6508                                 channel = 1 + (r % 3) * 5;
6509                         channel_forced = 0;
6510                 }
6511                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6512                                              channel_forced);
6513                 if (ret)
6514                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6515                                    "failed: %d", ret);
6516         }
6517         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6518                 u8 op_reg_class, op_channel, cfg_op_channel;
6519                 int ret = 0;
6520                 unsigned int r;
6521                 if (wpa_s->conf->p2p_oper_reg_class &&
6522                     wpa_s->conf->p2p_oper_channel) {
6523                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6524                         op_channel = wpa_s->conf->p2p_oper_channel;
6525                         cfg_op_channel = 1;
6526                 } else {
6527                         op_reg_class = 81;
6528                         /*
6529                          * Use random operation channel from (1, 6, 11)
6530                          *if no other preference is indicated.
6531                          */
6532                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6533                                 op_channel = 1;
6534                         else
6535                                 op_channel = 1 + (r % 3) * 5;
6536                         cfg_op_channel = 0;
6537                 }
6538                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6539                                            cfg_op_channel);
6540                 if (ret)
6541                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6542                                    "failed: %d", ret);
6543         }
6544
6545         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6546                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6547                                       wpa_s->conf->p2p_pref_chan) < 0) {
6548                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6549                                    "update failed");
6550                 }
6551
6552                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6553                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6554                                    "update failed");
6555                 }
6556         }
6557
6558         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6559                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6560 }
6561
6562
6563 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6564                      int duration)
6565 {
6566         if (!wpa_s->ap_iface)
6567                 return -1;
6568         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6569                                    duration);
6570 }
6571
6572
6573 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6574 {
6575         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6576                 return -1;
6577
6578         wpa_s->global->cross_connection = enabled;
6579         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6580
6581         if (!enabled) {
6582                 struct wpa_supplicant *iface;
6583
6584                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6585                 {
6586                         if (iface->cross_connect_enabled == 0)
6587                                 continue;
6588
6589                         iface->cross_connect_enabled = 0;
6590                         iface->cross_connect_in_use = 0;
6591                         wpa_msg_global(iface->parent, MSG_INFO,
6592                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6593                                        iface->ifname,
6594                                        iface->cross_connect_uplink);
6595                 }
6596         }
6597
6598         return 0;
6599 }
6600
6601
6602 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6603 {
6604         struct wpa_supplicant *iface;
6605
6606         if (!uplink->global->cross_connection)
6607                 return;
6608
6609         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6610                 if (!iface->cross_connect_enabled)
6611                         continue;
6612                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6613                     0)
6614                         continue;
6615                 if (iface->ap_iface == NULL)
6616                         continue;
6617                 if (iface->cross_connect_in_use)
6618                         continue;
6619
6620                 iface->cross_connect_in_use = 1;
6621                 wpa_msg_global(iface->parent, MSG_INFO,
6622                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6623                                iface->ifname, iface->cross_connect_uplink);
6624         }
6625 }
6626
6627
6628 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6629 {
6630         struct wpa_supplicant *iface;
6631
6632         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6633                 if (!iface->cross_connect_enabled)
6634                         continue;
6635                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6636                     0)
6637                         continue;
6638                 if (!iface->cross_connect_in_use)
6639                         continue;
6640
6641                 wpa_msg_global(iface->parent, MSG_INFO,
6642                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6643                                iface->ifname, iface->cross_connect_uplink);
6644                 iface->cross_connect_in_use = 0;
6645         }
6646 }
6647
6648
6649 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6650 {
6651         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6652             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6653             wpa_s->cross_connect_disallowed)
6654                 wpas_p2p_disable_cross_connect(wpa_s);
6655         else
6656                 wpas_p2p_enable_cross_connect(wpa_s);
6657         if (!wpa_s->ap_iface &&
6658             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6659                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6660 }
6661
6662
6663 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6664 {
6665         wpas_p2p_disable_cross_connect(wpa_s);
6666         if (!wpa_s->ap_iface &&
6667             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6668                                          wpa_s, NULL))
6669                 wpas_p2p_set_group_idle_timeout(wpa_s);
6670 }
6671
6672
6673 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6674 {
6675         struct wpa_supplicant *iface;
6676
6677         if (!wpa_s->global->cross_connection)
6678                 return;
6679
6680         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6681                 if (iface == wpa_s)
6682                         continue;
6683                 if (iface->drv_flags &
6684                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6685                         continue;
6686                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6687                     iface != wpa_s->parent)
6688                         continue;
6689
6690                 wpa_s->cross_connect_enabled = 1;
6691                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6692                            sizeof(wpa_s->cross_connect_uplink));
6693                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6694                            "%s to %s whenever uplink is available",
6695                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6696
6697                 if (iface->ap_iface || iface->current_ssid == NULL ||
6698                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6699                     iface->cross_connect_disallowed ||
6700                     iface->wpa_state != WPA_COMPLETED)
6701                         break;
6702
6703                 wpa_s->cross_connect_in_use = 1;
6704                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6705                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6706                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6707                 break;
6708         }
6709 }
6710
6711
6712 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6713 {
6714         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6715             !wpa_s->p2p_in_provisioning)
6716                 return 0; /* not P2P client operation */
6717
6718         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6719                    "session overlap");
6720         if (wpa_s != wpa_s->parent)
6721                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6722         wpas_p2p_group_formation_failed(wpa_s);
6723         return 1;
6724 }
6725
6726
6727 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6728 {
6729         struct wpa_supplicant *wpa_s = eloop_ctx;
6730         wpas_p2p_notif_pbc_overlap(wpa_s);
6731 }
6732
6733
6734 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6735 {
6736         struct p2p_channels chan, cli_chan;
6737         struct wpa_supplicant *ifs;
6738
6739         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6740                 return;
6741
6742         os_memset(&chan, 0, sizeof(chan));
6743         os_memset(&cli_chan, 0, sizeof(cli_chan));
6744         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6745                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6746                            "channel list");
6747                 return;
6748         }
6749
6750         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6751
6752         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6753                 int freq;
6754                 if (!ifs->current_ssid ||
6755                     !ifs->current_ssid->p2p_group ||
6756                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6757                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6758                                 continue;
6759                 freq = ifs->current_ssid->frequency;
6760                 if (freq_included(&chan, freq)) {
6761                         wpa_dbg(ifs, MSG_DEBUG,
6762                                 "P2P GO operating frequency %d MHz in valid range",
6763                                 freq);
6764                         continue;
6765                 }
6766
6767                 wpa_dbg(ifs, MSG_DEBUG,
6768                         "P2P GO operating in invalid frequency %d MHz", freq);
6769                 /* TODO: Consider using CSA or removing the group within
6770                  * wpa_supplicant */
6771                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6772         }
6773 }
6774
6775
6776 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6777                                      struct wpa_scan_results *scan_res)
6778 {
6779         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6780 }
6781
6782
6783 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6784 {
6785         struct wpa_global *global = wpa_s->global;
6786         int found = 0;
6787         const u8 *peer;
6788
6789         if (global->p2p == NULL)
6790                 return -1;
6791
6792         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6793
6794         if (wpa_s->pending_interface_name[0] &&
6795             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6796                 found = 1;
6797
6798         peer = p2p_get_go_neg_peer(global->p2p);
6799         if (peer) {
6800                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6801                            MACSTR, MAC2STR(peer));
6802                 p2p_unauthorize(global->p2p, peer);
6803                 found = 1;
6804         }
6805
6806         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6807                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6808                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6809                 found = 1;
6810         }
6811
6812         if (wpa_s->pending_pd_before_join) {
6813                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6814                 wpa_s->pending_pd_before_join = 0;
6815                 found = 1;
6816         }
6817
6818         wpas_p2p_stop_find(wpa_s);
6819
6820         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6821                 if (wpa_s == global->p2p_group_formation &&
6822                     (wpa_s->p2p_in_provisioning ||
6823                      wpa_s->parent->pending_interface_type ==
6824                      WPA_IF_P2P_CLIENT)) {
6825                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6826                                    "formation found - cancelling",
6827                                    wpa_s->ifname);
6828                         found = 1;
6829                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6830                                              wpa_s->parent, NULL);
6831                         if (wpa_s->p2p_in_provisioning) {
6832                                 wpas_group_formation_completed(wpa_s, 0);
6833                                 break;
6834                         }
6835                         wpas_p2p_group_delete(wpa_s,
6836                                               P2P_GROUP_REMOVAL_REQUESTED);
6837                         break;
6838                 } else if (wpa_s->p2p_in_invitation) {
6839                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6840                                    wpa_s->ifname);
6841                         found = 1;
6842                         wpas_p2p_group_formation_failed(wpa_s);
6843                 }
6844         }
6845
6846         if (!found) {
6847                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6848                 return -1;
6849         }
6850
6851         return 0;
6852 }
6853
6854
6855 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6856 {
6857         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6858                 return;
6859
6860         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6861                    "being available anymore");
6862         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6863 }
6864
6865
6866 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6867                                    int freq_24, int freq_5, int freq_overall)
6868 {
6869         struct p2p_data *p2p = wpa_s->global->p2p;
6870         if (p2p == NULL)
6871                 return;
6872         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6873 }
6874
6875
6876 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6877 {
6878         u8 peer[ETH_ALEN];
6879         struct p2p_data *p2p = wpa_s->global->p2p;
6880
6881         if (p2p == NULL)
6882                 return -1;
6883
6884         if (hwaddr_aton(addr, peer))
6885                 return -1;
6886
6887         return p2p_unauthorize(p2p, peer);
6888 }
6889
6890
6891 /**
6892  * wpas_p2p_disconnect - Disconnect from a P2P Group
6893  * @wpa_s: Pointer to wpa_supplicant data
6894  * Returns: 0 on success, -1 on failure
6895  *
6896  * This can be used to disconnect from a group in which the local end is a P2P
6897  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6898  * virtual network interface was created for this group, that interface will be
6899  * removed. Otherwise, only the configured P2P group network will be removed
6900  * from the interface.
6901  */
6902 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6903 {
6904
6905         if (wpa_s == NULL)
6906                 return -1;
6907
6908         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6909                 -1 : 0;
6910 }
6911
6912
6913 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6914 {
6915         int ret;
6916
6917         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6918                 return 0;
6919
6920         ret = p2p_in_progress(wpa_s->global->p2p);
6921         if (ret == 0) {
6922                 /*
6923                  * Check whether there is an ongoing WPS provisioning step (or
6924                  * other parts of group formation) on another interface since
6925                  * p2p_in_progress() does not report this to avoid issues for
6926                  * scans during such provisioning step.
6927                  */
6928                 if (wpa_s->global->p2p_group_formation &&
6929                     wpa_s->global->p2p_group_formation != wpa_s) {
6930                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6931                                 "in group formation",
6932                                 wpa_s->global->p2p_group_formation->ifname);
6933                         ret = 1;
6934                 }
6935         }
6936
6937         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6938                 struct os_reltime now;
6939                 os_get_reltime(&now);
6940                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6941                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6942                         /* Wait for the first client has expired */
6943                         wpa_s->global->p2p_go_wait_client.sec = 0;
6944                 } else {
6945                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6946                         ret = 1;
6947                 }
6948         }
6949
6950         return ret;
6951 }
6952
6953
6954 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6955                               struct wpa_ssid *ssid)
6956 {
6957         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6958             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6959                                  wpa_s->parent, NULL) > 0) {
6960                 /**
6961                  * Remove the network by scheduling the group formation
6962                  * timeout to happen immediately. The teardown code
6963                  * needs to be scheduled to run asynch later so that we
6964                  * don't delete data from under ourselves unexpectedly.
6965                  * Calling wpas_p2p_group_formation_timeout directly
6966                  * causes a series of crashes in WPS failure scenarios.
6967                  */
6968                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6969                            "P2P group network getting removed");
6970                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6971                                        wpa_s->parent, NULL);
6972         }
6973 }
6974
6975
6976 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6977                                           const u8 *addr, const u8 *ssid,
6978                                           size_t ssid_len)
6979 {
6980         struct wpa_ssid *s;
6981         size_t i;
6982
6983         for (s = wpa_s->conf->ssid; s; s = s->next) {
6984                 if (s->disabled != 2)
6985                         continue;
6986                 if (ssid &&
6987                     (ssid_len != s->ssid_len ||
6988                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6989                         continue;
6990                 if (addr == NULL) {
6991                         if (s->mode == WPAS_MODE_P2P_GO)
6992                                 return s;
6993                         continue;
6994                 }
6995                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6996                         return s; /* peer is GO in the persistent group */
6997                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6998                         continue;
6999                 for (i = 0; i < s->num_p2p_clients; i++) {
7000                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7001                                       addr, ETH_ALEN) == 0)
7002                                 return s; /* peer is P2P client in persistent
7003                                            * group */
7004                 }
7005         }
7006
7007         return NULL;
7008 }
7009
7010
7011 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7012                                        const u8 *addr)
7013 {
7014         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7015                                  wpa_s->parent, NULL) > 0) {
7016                 /*
7017                  * This can happen if WPS provisioning step is not terminated
7018                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7019                  * peer was able to connect, there is no need to time out group
7020                  * formation after this, though. In addition, this is used with
7021                  * the initial connection wait on the GO as a separate formation
7022                  * timeout and as such, expected to be hit after the initial WPS
7023                  * provisioning step.
7024                  */
7025                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7026
7027                 if (!wpa_s->p2p_go_group_formation_completed &&
7028                     !wpa_s->group_formation_reported) {
7029                         /*
7030                          * GO has not yet notified group formation success since
7031                          * the WPS step was not completed cleanly. Do that
7032                          * notification now since the P2P Client was able to
7033                          * connect and as such, must have received the
7034                          * credential from the WPS step.
7035                          */
7036                         if (wpa_s->global->p2p)
7037                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7038                         wpas_group_formation_completed(wpa_s, 1);
7039                 }
7040         }
7041         if (!wpa_s->p2p_go_group_formation_completed) {
7042                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7043                 wpa_s->p2p_go_group_formation_completed = 1;
7044                 wpa_s->global->p2p_group_formation = NULL;
7045                 wpa_s->p2p_in_provisioning = 0;
7046                 wpa_s->p2p_in_invitation = 0;
7047         }
7048         wpa_s->global->p2p_go_wait_client.sec = 0;
7049         if (addr == NULL)
7050                 return;
7051         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7052 }
7053
7054
7055 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7056                                        int group_added)
7057 {
7058         struct wpa_supplicant *group = wpa_s;
7059         int ret = 0;
7060
7061         if (wpa_s->global->p2p_group_formation)
7062                 group = wpa_s->global->p2p_group_formation;
7063         wpa_s = wpa_s->parent;
7064         offchannel_send_action_done(wpa_s);
7065         if (group_added)
7066                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7067         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7068         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7069                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7070                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7071                          wpa_s->p2p_persistent_id,
7072                          wpa_s->p2p_pd_before_go_neg,
7073                          wpa_s->p2p_go_ht40,
7074                          wpa_s->p2p_go_vht);
7075         return ret;
7076 }
7077
7078
7079 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7080 {
7081         int res;
7082
7083         if (!wpa_s->p2p_fallback_to_go_neg ||
7084             wpa_s->p2p_in_provisioning <= 5)
7085                 return 0;
7086
7087         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7088                 return 0; /* peer operating as a GO */
7089
7090         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7091                 "fallback to GO Negotiation");
7092         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7093                        "reason=GO-not-found");
7094         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7095
7096         return res == 1 ? 2 : 1;
7097 }
7098
7099
7100 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7101 {
7102         struct wpa_supplicant *ifs;
7103
7104         if (wpa_s->wpa_state > WPA_SCANNING) {
7105                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7106                         "concurrent operation",
7107                         wpa_s->conf->p2p_search_delay);
7108                 return wpa_s->conf->p2p_search_delay;
7109         }
7110
7111         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7112                          radio_list) {
7113                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7114                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7115                                 "delay due to concurrent operation on "
7116                                 "interface %s",
7117                                 wpa_s->conf->p2p_search_delay,
7118                                 ifs->ifname);
7119                         return wpa_s->conf->p2p_search_delay;
7120                 }
7121         }
7122
7123         return 0;
7124 }
7125
7126
7127 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7128                                      struct wpa_ssid *s, const u8 *addr,
7129                                      int iface_addr)
7130 {
7131         struct psk_list_entry *psk, *tmp;
7132         int changed = 0;
7133
7134         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7135                               list) {
7136                 if ((iface_addr && !psk->p2p &&
7137                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7138                     (!iface_addr && psk->p2p &&
7139                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7140                         wpa_dbg(wpa_s, MSG_DEBUG,
7141                                 "P2P: Remove persistent group PSK list entry for "
7142                                 MACSTR " p2p=%u",
7143                                 MAC2STR(psk->addr), psk->p2p);
7144                         dl_list_del(&psk->list);
7145                         os_free(psk);
7146                         changed++;
7147                 }
7148         }
7149
7150         return changed;
7151 }
7152
7153
7154 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7155                          const u8 *p2p_dev_addr,
7156                          const u8 *psk, size_t psk_len)
7157 {
7158         struct wpa_ssid *ssid = wpa_s->current_ssid;
7159         struct wpa_ssid *persistent;
7160         struct psk_list_entry *p, *last;
7161
7162         if (psk_len != sizeof(p->psk))
7163                 return;
7164
7165         if (p2p_dev_addr) {
7166                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7167                         " p2p_dev_addr=" MACSTR,
7168                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7169                 if (is_zero_ether_addr(p2p_dev_addr))
7170                         p2p_dev_addr = NULL;
7171         } else {
7172                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7173                         MAC2STR(mac_addr));
7174         }
7175
7176         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7177                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7178                 /* To be added to persistent group once created */
7179                 if (wpa_s->global->add_psk == NULL) {
7180                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7181                         if (wpa_s->global->add_psk == NULL)
7182                                 return;
7183                 }
7184                 p = wpa_s->global->add_psk;
7185                 if (p2p_dev_addr) {
7186                         p->p2p = 1;
7187                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7188                 } else {
7189                         p->p2p = 0;
7190                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7191                 }
7192                 os_memcpy(p->psk, psk, psk_len);
7193                 return;
7194         }
7195
7196         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7197                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7198                 return;
7199         }
7200
7201         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7202                                              ssid->ssid_len);
7203         if (!persistent) {
7204                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7205                 return;
7206         }
7207
7208         p = os_zalloc(sizeof(*p));
7209         if (p == NULL)
7210                 return;
7211         if (p2p_dev_addr) {
7212                 p->p2p = 1;
7213                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7214         } else {
7215                 p->p2p = 0;
7216                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7217         }
7218         os_memcpy(p->psk, psk, psk_len);
7219
7220         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7221             (last = dl_list_last(&persistent->psk_list,
7222                                  struct psk_list_entry, list))) {
7223                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7224                         MACSTR " (p2p=%u) to make room for a new one",
7225                         MAC2STR(last->addr), last->p2p);
7226                 dl_list_del(&last->list);
7227                 os_free(last);
7228         }
7229
7230         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7231                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7232                                   p2p_dev_addr == NULL);
7233         if (p2p_dev_addr) {
7234                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7235                         MACSTR, MAC2STR(p2p_dev_addr));
7236         } else {
7237                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7238                         MAC2STR(mac_addr));
7239         }
7240         dl_list_add(&persistent->psk_list, &p->list);
7241
7242         if (wpa_s->parent->conf->update_config &&
7243             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7244                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7245 }
7246
7247
7248 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7249                                 struct wpa_ssid *s, const u8 *addr,
7250                                 int iface_addr)
7251 {
7252         int res;
7253
7254         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7255         if (res > 0 && wpa_s->conf->update_config &&
7256             wpa_config_write(wpa_s->confname, wpa_s->conf))
7257                 wpa_dbg(wpa_s, MSG_DEBUG,
7258                         "P2P: Failed to update configuration");
7259 }
7260
7261
7262 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7263                                       const u8 *peer, int iface_addr)
7264 {
7265         struct hostapd_data *hapd;
7266         struct hostapd_wpa_psk *psk, *prev, *rem;
7267         struct sta_info *sta;
7268
7269         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7270             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7271                 return;
7272
7273         /* Remove per-station PSK entry */
7274         hapd = wpa_s->ap_iface->bss[0];
7275         prev = NULL;
7276         psk = hapd->conf->ssid.wpa_psk;
7277         while (psk) {
7278                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7279                     (!iface_addr &&
7280                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7281                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7282                                 MACSTR " iface_addr=%d",
7283                                 MAC2STR(peer), iface_addr);
7284                         if (prev)
7285                                 prev->next = psk->next;
7286                         else
7287                                 hapd->conf->ssid.wpa_psk = psk->next;
7288                         rem = psk;
7289                         psk = psk->next;
7290                         os_free(rem);
7291                 } else {
7292                         prev = psk;
7293                         psk = psk->next;
7294                 }
7295         }
7296
7297         /* Disconnect from group */
7298         if (iface_addr)
7299                 sta = ap_get_sta(hapd, peer);
7300         else
7301                 sta = ap_get_sta_p2p(hapd, peer);
7302         if (sta) {
7303                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7304                         " (iface_addr=%d) from group",
7305                         MAC2STR(peer), iface_addr);
7306                 hostapd_drv_sta_deauth(hapd, sta->addr,
7307                                        WLAN_REASON_DEAUTH_LEAVING);
7308                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7309         }
7310 }
7311
7312
7313 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7314                             int iface_addr)
7315 {
7316         struct wpa_ssid *s;
7317         struct wpa_supplicant *w;
7318         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7319
7320         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7321
7322         /* Remove from any persistent group */
7323         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7324                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7325                         continue;
7326                 if (!iface_addr)
7327                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7328                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7329         }
7330
7331         /* Remove from any operating group */
7332         for (w = wpa_s->global->ifaces; w; w = w->next)
7333                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7334 }
7335
7336
7337 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7338 {
7339         struct wpa_supplicant *wpa_s = eloop_ctx;
7340         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7341 }
7342
7343
7344 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7345 {
7346         struct wpa_supplicant *wpa_s = eloop_ctx;
7347
7348         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7349         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7350 }
7351
7352
7353 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7354                                         struct wpa_ssid *ssid)
7355 {
7356         struct wpa_supplicant *iface;
7357
7358         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7359                 if (!iface->current_ssid ||
7360                     iface->current_ssid->frequency == freq ||
7361                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7362                      !iface->current_ssid->p2p_group))
7363                         continue;
7364
7365                 /* Remove the connection with least priority */
7366                 if (!wpas_is_p2p_prioritized(iface)) {
7367                         /* STA connection has priority over existing
7368                          * P2P connection, so remove the interface. */
7369                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7370                         eloop_register_timeout(0, 0,
7371                                                wpas_p2p_group_freq_conflict,
7372                                                iface, NULL);
7373                         /* If connection in progress is P2P connection, do not
7374                          * proceed for the connection. */
7375                         if (wpa_s == iface)
7376                                 return -1;
7377                         else
7378                                 return 0;
7379                 } else {
7380                         /* P2P connection has priority, disable the STA network
7381                          */
7382                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7383                                                        ssid);
7384                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7385                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7386                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7387                                   ETH_ALEN);
7388                         /* If P2P connection is in progress, continue
7389                          * connecting...*/
7390                         if (wpa_s == iface)
7391                                 return 0;
7392                         else
7393                                 return -1;
7394                 }
7395         }
7396
7397         return 0;
7398 }
7399
7400
7401 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7402 {
7403         struct wpa_ssid *ssid = wpa_s->current_ssid;
7404
7405         if (ssid == NULL || !ssid->p2p_group)
7406                 return 0;
7407
7408         if (wpa_s->p2p_last_4way_hs_fail &&
7409             wpa_s->p2p_last_4way_hs_fail == ssid) {
7410                 u8 go_dev_addr[ETH_ALEN];
7411                 struct wpa_ssid *persistent;
7412
7413                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7414                                               ssid->ssid,
7415                                               ssid->ssid_len) <= 0) {
7416                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7417                         goto disconnect;
7418                 }
7419
7420                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7421                         MACSTR, MAC2STR(go_dev_addr));
7422                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7423                                                      ssid->ssid,
7424                                                      ssid->ssid_len);
7425                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7426                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7427                         goto disconnect;
7428                 }
7429                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7430                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7431                                persistent->id);
7432         disconnect:
7433                 wpa_s->p2p_last_4way_hs_fail = NULL;
7434                 /*
7435                  * Remove the group from a timeout to avoid issues with caller
7436                  * continuing to use the interface if this is on a P2P group
7437                  * interface.
7438                  */
7439                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7440                                        wpa_s, NULL);
7441                 return 1;
7442         }
7443
7444         wpa_s->p2p_last_4way_hs_fail = ssid;
7445         return 0;
7446 }
7447
7448
7449 #ifdef CONFIG_WPS_NFC
7450
7451 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7452                                              struct wpabuf *p2p)
7453 {
7454         struct wpabuf *ret;
7455         size_t wsc_len;
7456
7457         if (p2p == NULL) {
7458                 wpabuf_free(wsc);
7459                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7460                 return NULL;
7461         }
7462
7463         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7464         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7465         if (ret == NULL) {
7466                 wpabuf_free(wsc);
7467                 wpabuf_free(p2p);
7468                 return NULL;
7469         }
7470
7471         wpabuf_put_be16(ret, wsc_len);
7472         if (wsc)
7473                 wpabuf_put_buf(ret, wsc);
7474         wpabuf_put_be16(ret, wpabuf_len(p2p));
7475         wpabuf_put_buf(ret, p2p);
7476
7477         wpabuf_free(wsc);
7478         wpabuf_free(p2p);
7479         wpa_hexdump_buf(MSG_DEBUG,
7480                         "P2P: Generated NFC connection handover message", ret);
7481
7482         if (ndef && ret) {
7483                 struct wpabuf *tmp;
7484                 tmp = ndef_build_p2p(ret);
7485                 wpabuf_free(ret);
7486                 if (tmp == NULL) {
7487                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7488                         return NULL;
7489                 }
7490                 ret = tmp;
7491         }
7492
7493         return ret;
7494 }
7495
7496
7497 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7498                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7499 {
7500         struct wpa_supplicant *iface;
7501
7502         if (go_dev_addr)
7503                 os_memset(go_dev_addr, 0, ETH_ALEN);
7504         if (ssid)
7505                 *ssid = NULL;
7506         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7507                 if (iface->wpa_state < WPA_ASSOCIATING ||
7508                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7509                     !iface->current_ssid->p2p_group ||
7510                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7511                         continue;
7512                 if (ssid)
7513                         *ssid = iface->current_ssid;
7514                 if (go_dev_addr)
7515                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7516                 return iface->assoc_freq;
7517         }
7518         return 0;
7519 }
7520
7521
7522 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7523                                           int ndef)
7524 {
7525         struct wpabuf *wsc, *p2p;
7526         struct wpa_ssid *ssid;
7527         u8 go_dev_addr[ETH_ALEN];
7528         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7529
7530         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7531                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7532                 return NULL;
7533         }
7534
7535         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7536             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7537                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7538                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7539                 return NULL;
7540         }
7541
7542         if (cli_freq == 0) {
7543                 wsc = wps_build_nfc_handover_req_p2p(
7544                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7545         } else
7546                 wsc = NULL;
7547         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7548                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7549                                          ssid ? ssid->ssid_len : 0);
7550
7551         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7552 }
7553
7554
7555 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7556                                           int ndef, int tag)
7557 {
7558         struct wpabuf *wsc, *p2p;
7559         struct wpa_ssid *ssid;
7560         u8 go_dev_addr[ETH_ALEN];
7561         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7562
7563         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7564                 return NULL;
7565
7566         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7567             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7568                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7569                 return NULL;
7570
7571         if (cli_freq == 0) {
7572                 wsc = wps_build_nfc_handover_sel_p2p(
7573                         wpa_s->parent->wps,
7574                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7575                         DEV_PW_NFC_CONNECTION_HANDOVER,
7576                         wpa_s->conf->wps_nfc_dh_pubkey,
7577                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7578         } else
7579                 wsc = NULL;
7580         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7581                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7582                                          ssid ? ssid->ssid_len : 0);
7583
7584         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7585 }
7586
7587
7588 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7589                                    struct p2p_nfc_params *params)
7590 {
7591         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7592                    "connection handover (freq=%d)",
7593                    params->go_freq);
7594
7595         if (params->go_freq && params->go_ssid_len) {
7596                 wpa_s->p2p_wps_method = WPS_NFC;
7597                 wpa_s->pending_join_wps_method = WPS_NFC;
7598                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7599                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7600                           ETH_ALEN);
7601                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7602                                            params->go_ssid,
7603                                            params->go_ssid_len);
7604         }
7605
7606         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7607                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7608                                 params->go_freq, -1, 0, 1, 1);
7609 }
7610
7611
7612 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7613                                   struct p2p_nfc_params *params, int tag)
7614 {
7615         int res, persistent;
7616         struct wpa_ssid *ssid;
7617
7618         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7619                    "connection handover");
7620         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7621                 ssid = wpa_s->current_ssid;
7622                 if (ssid == NULL)
7623                         continue;
7624                 if (ssid->mode != WPAS_MODE_P2P_GO)
7625                         continue;
7626                 if (wpa_s->ap_iface == NULL)
7627                         continue;
7628                 break;
7629         }
7630         if (wpa_s == NULL) {
7631                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7632                 return -1;
7633         }
7634
7635         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7636             DEV_PW_NFC_CONNECTION_HANDOVER &&
7637             !wpa_s->parent->p2p_oob_dev_pw) {
7638                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7639                 return -1;
7640         }
7641         res = wpas_ap_wps_add_nfc_pw(
7642                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7643                 wpa_s->parent->p2p_oob_dev_pw,
7644                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7645                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7646         if (res)
7647                 return res;
7648
7649         if (!tag) {
7650                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7651                 return 0;
7652         }
7653
7654         if (!params->peer ||
7655             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7656                 return 0;
7657
7658         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7659                    " to join", MAC2STR(params->peer->p2p_device_addr));
7660
7661         wpa_s->global->p2p_invite_group = wpa_s;
7662         persistent = ssid->p2p_persistent_group &&
7663                 wpas_p2p_get_persistent(wpa_s->parent,
7664                                         params->peer->p2p_device_addr,
7665                                         ssid->ssid, ssid->ssid_len);
7666         wpa_s->parent->pending_invite_ssid_id = -1;
7667
7668         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7669                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7670                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7671                           wpa_s->global->p2p_dev_addr, persistent, 0,
7672                           wpa_s->parent->p2p_oob_dev_pw_id);
7673 }
7674
7675
7676 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7677                                     struct p2p_nfc_params *params,
7678                                     int forced_freq)
7679 {
7680         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7681                    "connection handover");
7682         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7683                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7684                                 forced_freq, -1, 0, 1, 1);
7685 }
7686
7687
7688 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7689                                     struct p2p_nfc_params *params,
7690                                     int forced_freq)
7691 {
7692         int res;
7693
7694         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7695                    "connection handover");
7696         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7697                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7698                                forced_freq, -1, 0, 1, 1);
7699         if (res)
7700                 return res;
7701
7702         res = wpas_p2p_listen(wpa_s, 60);
7703         if (res) {
7704                 p2p_unauthorize(wpa_s->global->p2p,
7705                                 params->peer->p2p_device_addr);
7706         }
7707
7708         return res;
7709 }
7710
7711
7712 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7713                                             const struct wpabuf *data,
7714                                             int sel, int tag, int forced_freq)
7715 {
7716         const u8 *pos, *end;
7717         u16 len, id;
7718         struct p2p_nfc_params params;
7719         int res;
7720
7721         os_memset(&params, 0, sizeof(params));
7722         params.sel = sel;
7723
7724         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7725
7726         pos = wpabuf_head(data);
7727         end = pos + wpabuf_len(data);
7728
7729         if (end - pos < 2) {
7730                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7731                            "attributes");
7732                 return -1;
7733         }
7734         len = WPA_GET_BE16(pos);
7735         pos += 2;
7736         if (len > end - pos) {
7737                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7738                            "attributes");
7739                 return -1;
7740         }
7741         params.wsc_attr = pos;
7742         params.wsc_len = len;
7743         pos += len;
7744
7745         if (end - pos < 2) {
7746                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7747                            "attributes");
7748                 return -1;
7749         }
7750         len = WPA_GET_BE16(pos);
7751         pos += 2;
7752         if (len > end - pos) {
7753                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7754                            "attributes");
7755                 return -1;
7756         }
7757         params.p2p_attr = pos;
7758         params.p2p_len = len;
7759         pos += len;
7760
7761         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7762                     params.wsc_attr, params.wsc_len);
7763         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7764                     params.p2p_attr, params.p2p_len);
7765         if (pos < end) {
7766                 wpa_hexdump(MSG_DEBUG,
7767                             "P2P: Ignored extra data after P2P attributes",
7768                             pos, end - pos);
7769         }
7770
7771         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7772         if (res)
7773                 return res;
7774
7775         if (params.next_step == NO_ACTION)
7776                 return 0;
7777
7778         if (params.next_step == BOTH_GO) {
7779                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7780                         MAC2STR(params.peer->p2p_device_addr));
7781                 return 0;
7782         }
7783
7784         if (params.next_step == PEER_CLIENT) {
7785                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7786                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7787                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7788                                 " ssid=\"%s\"",
7789                                 MAC2STR(params.peer->p2p_device_addr),
7790                                 params.go_freq,
7791                                 MAC2STR(params.go_dev_addr),
7792                                 wpa_ssid_txt(params.go_ssid,
7793                                              params.go_ssid_len));
7794                 } else {
7795                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7796                                 "peer=" MACSTR " freq=%d",
7797                                 MAC2STR(params.peer->p2p_device_addr),
7798                                 params.go_freq);
7799                 }
7800                 return 0;
7801         }
7802
7803         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7804                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7805                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7806                 return 0;
7807         }
7808
7809         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7810         wpa_s->p2p_oob_dev_pw = NULL;
7811
7812         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7813                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7814                            "received");
7815                 return -1;
7816         }
7817
7818         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7819         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7820         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7821                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7822         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7823                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7824         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7825
7826         if (tag) {
7827                 if (id < 0x10) {
7828                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7829                                    "peer OOB Device Password Id %u", id);
7830                         return -1;
7831                 }
7832                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7833                            "Device Password Id %u", id);
7834                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7835                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7836                                 params.oob_dev_pw_len -
7837                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7838                 wpa_s->p2p_oob_dev_pw_id = id;
7839                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7840                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7841                         params.oob_dev_pw_len -
7842                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7843                 if (wpa_s->p2p_oob_dev_pw == NULL)
7844                         return -1;
7845
7846                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7847                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7848                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7849                         return -1;
7850         } else {
7851                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7852                            "without Device Password");
7853                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7854         }
7855
7856         switch (params.next_step) {
7857         case NO_ACTION:
7858         case BOTH_GO:
7859         case PEER_CLIENT:
7860                 /* already covered above */
7861                 return 0;
7862         case JOIN_GROUP:
7863                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7864         case AUTH_JOIN:
7865                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7866         case INIT_GO_NEG:
7867                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7868         case RESP_GO_NEG:
7869                 /* TODO: use own OOB Dev Pw */
7870                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7871         }
7872
7873         return -1;
7874 }
7875
7876
7877 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7878                              const struct wpabuf *data, int forced_freq)
7879 {
7880         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7881                 return -1;
7882
7883         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7884 }
7885
7886
7887 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7888                                  const struct wpabuf *req,
7889                                  const struct wpabuf *sel, int forced_freq)
7890 {
7891         struct wpabuf *tmp;
7892         int ret;
7893
7894         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7895                 return -1;
7896
7897         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7898
7899         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7900                           wpabuf_head(req), wpabuf_len(req));
7901         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7902                           wpabuf_head(sel), wpabuf_len(sel));
7903         if (forced_freq)
7904                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7905         tmp = ndef_parse_p2p(init ? sel : req);
7906         if (tmp == NULL) {
7907                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7908                 return -1;
7909         }
7910
7911         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7912                                                forced_freq);
7913         wpabuf_free(tmp);
7914
7915         return ret;
7916 }
7917
7918
7919 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7920 {
7921         const u8 *if_addr;
7922         int go_intent = wpa_s->conf->p2p_go_intent;
7923         struct wpa_supplicant *iface;
7924
7925         if (wpa_s->global->p2p == NULL)
7926                 return -1;
7927
7928         if (!enabled) {
7929                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7930                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7931                 {
7932                         if (!iface->ap_iface)
7933                                 continue;
7934                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7935                 }
7936                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7937                                                  0, NULL);
7938                 if (wpa_s->p2p_nfc_tag_enabled)
7939                         wpas_p2p_remove_pending_group_interface(wpa_s);
7940                 wpa_s->p2p_nfc_tag_enabled = 0;
7941                 return 0;
7942         }
7943
7944         if (wpa_s->global->p2p_disabled)
7945                 return -1;
7946
7947         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7948             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7949             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7950             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7951                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7952                            "to allow static handover cases");
7953                 return -1;
7954         }
7955
7956         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7957
7958         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7959         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7960         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7961         if (wpa_s->p2p_oob_dev_pw == NULL)
7962                 return -1;
7963         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7964
7965         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7966             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7967                 /*
7968                  * P2P Group Interface present and the command came on group
7969                  * interface, so enable the token for the current interface.
7970                  */
7971                 wpa_s->create_p2p_iface = 0;
7972         } else {
7973                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7974         }
7975
7976         if (wpa_s->create_p2p_iface) {
7977                 enum wpa_driver_if_type iftype;
7978                 /* Prepare to add a new interface for the group */
7979                 iftype = WPA_IF_P2P_GROUP;
7980                 if (go_intent == 15)
7981                         iftype = WPA_IF_P2P_GO;
7982                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7983                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7984                                    "interface for the group");
7985                         return -1;
7986                 }
7987
7988                 if_addr = wpa_s->pending_interface_addr;
7989         } else
7990                 if_addr = wpa_s->own_addr;
7991
7992         wpa_s->p2p_nfc_tag_enabled = enabled;
7993
7994         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7995                 struct hostapd_data *hapd;
7996                 if (iface->ap_iface == NULL)
7997                         continue;
7998                 hapd = iface->ap_iface->bss[0];
7999                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8000                 hapd->conf->wps_nfc_dh_pubkey =
8001                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8002                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8003                 hapd->conf->wps_nfc_dh_privkey =
8004                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8005                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8006                 hapd->conf->wps_nfc_dev_pw =
8007                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8008                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8009
8010                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8011                         wpa_dbg(iface, MSG_DEBUG,
8012                                 "P2P: Failed to enable NFC Tag for GO");
8013                 }
8014         }
8015         p2p_set_authorized_oob_dev_pw_id(
8016                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8017                 if_addr);
8018
8019         return 0;
8020 }
8021
8022 #endif /* CONFIG_WPS_NFC */
8023
8024
8025 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8026                                              struct wpa_used_freq_data *freqs,
8027                                              unsigned int num)
8028 {
8029         u8 curr_chan, cand, chan;
8030         unsigned int i;
8031
8032         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8033         for (i = 0, cand = 0; i < num; i++) {
8034                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8035                 if (curr_chan == chan) {
8036                         cand = 0;
8037                         break;
8038                 }
8039
8040                 if (chan == 1 || chan == 6 || chan == 11)
8041                         cand = chan;
8042         }
8043
8044         if (cand) {
8045                 wpa_dbg(wpa_s, MSG_DEBUG,
8046                         "P2P: Update Listen channel to %u based on operating channel",
8047                         cand);
8048                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8049         }
8050 }
8051
8052
8053 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8054 {
8055         struct wpa_used_freq_data *freqs;
8056         unsigned int num = wpa_s->num_multichan_concurrent;
8057
8058         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8059                 return;
8060
8061         /*
8062          * If possible, optimize the Listen channel to be a channel that is
8063          * already used by one of the other interfaces.
8064          */
8065         if (!wpa_s->conf->p2p_optimize_listen_chan)
8066                 return;
8067
8068         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8069                 return;
8070
8071         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8072         if (!freqs)
8073                 return;
8074
8075         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8076
8077         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8078         os_free(freqs);
8079 }
8080
8081
8082 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8083 {
8084         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8085                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8086                         "the management interface is being removed");
8087                 wpas_p2p_deinit_global(wpa_s->global);
8088         }
8089 }
8090
8091
8092 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8093 {
8094         if (wpa_s->ap_iface->bss)
8095                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8096         wpas_p2p_group_deinit(wpa_s);
8097 }