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 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 130                                             int already_deleted);
 131
 132
 133 /*
 134  * Get the number of concurrent channels that the HW can operate, but that are
 135  * currently not in use by any of the wpa_supplicant interfaces.
 136  */
 137 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 138 {
 139         int *freqs;
 140         int num, unused;
 141
 142         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 143         if (!freqs)
 144                 return -1;
 145
 146         num = get_shared_radio_freqs(wpa_s, freqs,
 147                                      wpa_s->num_multichan_concurrent);
 148         os_free(freqs);
 149
 150         unused = wpa_s->num_multichan_concurrent - num;
 151         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 152         return unused;
 153 }
 154
 155
 156 /*
 157  * Get the frequencies that are currently in use by one or more of the virtual
 158  * interfaces, and that are also valid for P2P operation.
 159  */
 160 static unsigned int
 161 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 162                           struct wpa_used_freq_data *p2p_freqs,
 163                           unsigned int len)
 164 {
 165         struct wpa_used_freq_data *freqs;
 166         unsigned int num, i, j;
 167
 168         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 169                           sizeof(struct wpa_used_freq_data));
 170         if (!freqs)
 171                 return 0;
 172
 173         num = get_shared_radio_freqs_data(wpa_s, freqs,
 174                                           wpa_s->num_multichan_concurrent);
 175
 176         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 177
 178         for (i = 0, j = 0; i < num && j < len; i++) {
 179                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 180                         p2p_freqs[j++] = freqs[i];
 181         }
 182
 183         os_free(freqs);
 184
 185         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 186
 187         return j;
 188 }
 189
 190
 191 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 192                                              int freq)
 193 {
 194         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 195                 return;
 196
 197         /* Use the wpa_s used to control the P2P Device operation */
 198         wpa_s = wpa_s->global->p2p_init_wpa_s;
 199
 200         if (wpa_s->conf->p2p_ignore_shared_freq &&
 201             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 202             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 203                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 204                            freq);
 205                 freq = 0;
 206         }
 207         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 208 }
 209
 210
 211 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 212                                       struct wpa_scan_results *scan_res)
 213 {
 214         size_t i;
 215
 216         if (wpa_s->p2p_scan_work) {
 217                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 218                 wpa_s->p2p_scan_work = NULL;
 219                 radio_work_done(work);
 220         }
 221
 222         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 223                 return;
 224
 225         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 226                    (int) scan_res->num);
 227
 228         for (i = 0; i < scan_res->num; i++) {
 229                 struct wpa_scan_res *bss = scan_res->res[i];
 230                 struct os_reltime time_tmp_age, entry_ts;
 231                 const u8 *ies;
 232                 size_t ies_len;
 233
 234                 time_tmp_age.sec = bss->age / 1000;
 235                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 236                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 237
 238                 ies = (const u8 *) (bss + 1);
 239                 ies_len = bss->ie_len;
 240                 if (bss->beacon_ie_len > 0 &&
 241                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 242                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 243                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 244                                    MACSTR, MAC2STR(bss->bssid));
 245                         ies = ies + ies_len;
 246                         ies_len = bss->beacon_ie_len;
 247                 }
 248
 249
 250                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 251                                          bss->freq, &entry_ts, bss->level,
 252                                          ies, ies_len) > 0)
 253                         break;
 254         }
 255
 256         p2p_scan_res_handled(wpa_s->global->p2p);
 257 }
 258
 259
 260 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 261 {
 262         struct wpa_supplicant *wpa_s = work->wpa_s;
 263         struct wpa_driver_scan_params *params = work->ctx;
 264         int ret;
 265
 266         if (deinit) {
 267                 if (!work->started) {
 268                         wpa_scan_free_params(params);
 269                         return;
 270                 }
 271
 272                 wpa_s->p2p_scan_work = NULL;
 273                 return;
 274         }
 275
 276         ret = wpa_drv_scan(wpa_s, params);
 277         wpa_scan_free_params(params);
 278         work->ctx = NULL;
 279         if (ret) {
 280                 radio_work_done(work);
 281                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 282                 return;
 283         }
 284
 285         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 286         os_get_reltime(&wpa_s->scan_trigger_time);
 287         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 288         wpa_s->own_scan_requested = 1;
 289         wpa_s->p2p_scan_work = work;
 290 }
 291
 292
 293 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 294                                           int freq)
 295 {
 296         if (wpa_s->global->p2p_24ghz_social_channels &&
 297             (freq == 2412 || freq == 2437 || freq == 2462)) {
 298                 /*
 299                  * Search all social channels regardless of whether these have
 300                  * been disabled for P2P operating channel use to avoid missing
 301                  * peers.
 302                  */
 303                 return 1;
 304         }
 305         return p2p_supported_freq(wpa_s->global->p2p, freq);
 306 }
 307
 308
 309 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 310                          unsigned int num_req_dev_types,
 311                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 312 {
 313         struct wpa_supplicant *wpa_s = ctx;
 314         struct wpa_driver_scan_params *params = NULL;
 315         struct wpabuf *wps_ie, *ies;
 316         unsigned int num_channels = 0;
 317         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 318         size_t ielen;
 319         u8 *n, i;
 320
 321         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 322                 return -1;
 323
 324         if (wpa_s->p2p_scan_work) {
 325                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 326                 return -1;
 327         }
 328
 329         params = os_zalloc(sizeof(*params));
 330         if (params == NULL)
 331                 return -1;
 332
 333         /* P2P Wildcard SSID */
 334         params->num_ssids = 1;
 335         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 336         if (n == NULL)
 337                 goto fail;
 338         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 339         params->ssids[0].ssid = n;
 340         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 341
 342         wpa_s->wps->dev.p2p = 1;
 343         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 344                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 345                                         num_req_dev_types, req_dev_types);
 346         if (wps_ie == NULL)
 347                 goto fail;
 348
 349         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 350         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 351         if (ies == NULL) {
 352                 wpabuf_free(wps_ie);
 353                 goto fail;
 354         }
 355         wpabuf_put_buf(ies, wps_ie);
 356         wpabuf_free(wps_ie);
 357
 358         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 359
 360         params->p2p_probe = 1;
 361         n = os_malloc(wpabuf_len(ies));
 362         if (n == NULL) {
 363                 wpabuf_free(ies);
 364                 goto fail;
 365         }
 366         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 367         params->extra_ies = n;
 368         params->extra_ies_len = wpabuf_len(ies);
 369         wpabuf_free(ies);
 370
 371         switch (type) {
 372         case P2P_SCAN_SOCIAL:
 373                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 374                                           sizeof(int));
 375                 if (params->freqs == NULL)
 376                         goto fail;
 377                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 378                         if (wpas_p2p_search_social_channel(
 379                                     wpa_s, social_channels_freq[i]))
 380                                 params->freqs[num_channels++] =
 381                                         social_channels_freq[i];
 382                 }
 383                 params->freqs[num_channels++] = 0;
 384                 break;
 385         case P2P_SCAN_FULL:
 386                 break;
 387         case P2P_SCAN_SPECIFIC:
 388                 params->freqs = os_calloc(2, sizeof(int));
 389                 if (params->freqs == NULL)
 390                         goto fail;
 391                 params->freqs[0] = freq;
 392                 params->freqs[1] = 0;
 393                 break;
 394         case P2P_SCAN_SOCIAL_PLUS_ONE:
 395                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 396                                           sizeof(int));
 397                 if (params->freqs == NULL)
 398                         goto fail;
 399                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 400                         if (wpas_p2p_search_social_channel(
 401                                     wpa_s, social_channels_freq[i]))
 402                                 params->freqs[num_channels++] =
 403                                         social_channels_freq[i];
 404                 }
 405                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 406                         params->freqs[num_channels++] = freq;
 407                 params->freqs[num_channels++] = 0;
 408                 break;
 409         }
 410
 411         radio_remove_works(wpa_s, "p2p-scan", 0);
 412         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 413                            params) < 0)
 414                 goto fail;
 415         return 0;
 416
 417 fail:
 418         wpa_scan_free_params(params);
 419         return -1;
 420 }
 421
 422
 423 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 424 {
 425         switch (p2p_group_interface) {
 426         case P2P_GROUP_INTERFACE_PENDING:
 427                 return WPA_IF_P2P_GROUP;
 428         case P2P_GROUP_INTERFACE_GO:
 429                 return WPA_IF_P2P_GO;
 430         case P2P_GROUP_INTERFACE_CLIENT:
 431                 return WPA_IF_P2P_CLIENT;
 432         }
 433
 434         return WPA_IF_P2P_GROUP;
 435 }
 436
 437
 438 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 439                                                   const u8 *ssid,
 440                                                   size_t ssid_len, int *go)
 441 {
 442         struct wpa_ssid *s;
 443
 444         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 445                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 446                         if (s->disabled != 0 || !s->p2p_group ||
 447                             s->ssid_len != ssid_len ||
 448                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 449                                 continue;
 450                         if (s->mode == WPAS_MODE_P2P_GO &&
 451                             s != wpa_s->current_ssid)
 452                                 continue;
 453                         if (go)
 454                                 *go = s->mode == WPAS_MODE_P2P_GO;
 455                         return wpa_s;
 456                 }
 457         }
 458
 459         return NULL;
 460 }
 461
 462
 463 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 464 {
 465         struct wpa_supplicant *wpa_s = eloop_ctx;
 466         wpa_printf(MSG_DEBUG,
 467                    "P2P: Complete previously requested removal of %s",
 468                    wpa_s->ifname);
 469         wpas_p2p_disconnect(wpa_s);
 470 }
 471
 472
 473 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 474                                       struct wpa_supplicant *calling_wpa_s)
 475 {
 476         if (calling_wpa_s == wpa_s && wpa_s &&
 477             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 478                 /*
 479                  * The calling wpa_s instance is going to be removed. Do that
 480                  * from an eloop callback to keep the instance available until
 481                  * the caller has returned. This my be needed, e.g., to provide
 482                  * control interface responses on the per-interface socket.
 483                  */
 484                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 485                                            wpa_s, NULL) < 0)
 486                         return -1;
 487                 return 0;
 488         }
 489
 490         return wpas_p2p_disconnect(wpa_s);
 491 }
 492
 493
 494 /* Determine total number of clients in active groups where we are the GO */
 495 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 496 {
 497         unsigned int count = 0;
 498         struct wpa_ssid *s;
 499
 500         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 501                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 502                         wpa_printf(MSG_DEBUG,
 503                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 504                                    wpa_s, s, s->disabled, s->p2p_group,
 505                                    s->mode);
 506                         if (!s->disabled && s->p2p_group &&
 507                             s->mode == WPAS_MODE_P2P_GO) {
 508                                 count += p2p_get_group_num_members(
 509                                         wpa_s->p2p_group);
 510                         }
 511                 }
 512         }
 513
 514         return count;
 515 }
 516
 517
 518 /* Find an interface for a P2P group where we are the GO */
 519 static struct wpa_supplicant *
 520 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 521 {
 522         struct wpa_supplicant *save = NULL;
 523         struct wpa_ssid *s;
 524
 525         if (!wpa_s)
 526                 return NULL;
 527
 528         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 529                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 530                         if (s->disabled || !s->p2p_group ||
 531                             s->mode != WPAS_MODE_P2P_GO)
 532                                 continue;
 533
 534                         /* Prefer a group with connected clients */
 535                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 536                                 return wpa_s;
 537                         save = wpa_s;
 538                 }
 539         }
 540
 541         /* No group with connected clients, so pick the one without (if any) */
 542         return save;
 543 }
 544
 545
 546 /* Find an active P2P group where we are the GO */
 547 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 548                                                 u8 *bssid)
 549 {
 550         struct wpa_ssid *s, *empty = NULL;
 551
 552         if (!wpa_s)
 553                 return 0;
 554
 555         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 556                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 557                         if (s->disabled || !s->p2p_group ||
 558                             s->mode != WPAS_MODE_P2P_GO)
 559                                 continue;
 560
 561                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 562                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 563                                 return s;
 564                         empty = s;
 565                 }
 566         }
 567
 568         return empty;
 569 }
 570
 571
 572 /* Find a persistent group where we are the GO */
 573 static struct wpa_ssid *
 574 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 575 {
 576         struct wpa_ssid *s;
 577
 578         for (s = wpa_s->conf->ssid; s; s = s->next) {
 579                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 580                         return s;
 581         }
 582
 583         return NULL;
 584 }
 585
 586
 587 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 588 {
 589         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 590         struct wpa_ssid *s;
 591         u8 conncap = P2PS_SETUP_NONE;
 592         unsigned int owned_members = 0;
 593         unsigned int owner = 0;
 594         unsigned int client = 0;
 595         struct wpa_supplicant *go_wpa_s;
 596         struct wpa_ssid *persistent_go;
 597         int p2p_no_group_iface;
 598
 599         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 600
 601         /*
 602          * For non-concurrent capable devices:
 603          * If persistent_go, then no new.
 604          * If GO, then no client.
 605          * If client, then no GO.
 606          */
 607         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 608         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 609         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 610
 611         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 612                    go_wpa_s, persistent_go);
 613
 614         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 615              tmp_wpa_s = tmp_wpa_s->next) {
 616                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 617                         wpa_printf(MSG_DEBUG,
 618                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 619                                    tmp_wpa_s, s, s->disabled,
 620                                    s->p2p_group, s->mode);
 621                         if (!s->disabled && s->p2p_group) {
 622                                 if (s->mode == WPAS_MODE_P2P_GO) {
 623                                         owned_members +=
 624                                                 p2p_get_group_num_members(
 625                                                         tmp_wpa_s->p2p_group);
 626                                         owner++;
 627                                 } else
 628                                         client++;
 629                         }
 630                 }
 631         }
 632
 633         /* If not concurrent, restrict our choices */
 634         if (p2p_no_group_iface) {
 635                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 636
 637                 if (client)
 638                         return P2PS_SETUP_NONE;
 639
 640                 if (go_wpa_s) {
 641                         if (role == P2PS_SETUP_CLIENT ||
 642                             incoming == P2PS_SETUP_GROUP_OWNER ||
 643                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 644                                 return P2PS_SETUP_NONE;
 645
 646                         return P2PS_SETUP_GROUP_OWNER;
 647                 }
 648
 649                 if (persistent_go) {
 650                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 651                                 if (!incoming)
 652                                         return P2PS_SETUP_GROUP_OWNER |
 653                                                 P2PS_SETUP_CLIENT;
 654                                 if (incoming == P2PS_SETUP_NEW) {
 655                                         u8 r;
 656
 657                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 658                                             (r & 1))
 659                                                 return P2PS_SETUP_CLIENT;
 660                                         return P2PS_SETUP_GROUP_OWNER;
 661                                 }
 662                         }
 663                 }
 664         }
 665
 666         /* If a required role has been specified, handle it here */
 667         if (role && role != P2PS_SETUP_NEW) {
 668                 switch (incoming) {
 669                 case P2PS_SETUP_NONE:
 670                 case P2PS_SETUP_NEW:
 671                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 672                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 673                         conncap = role;
 674                         goto grp_owner;
 675
 676                 case P2PS_SETUP_GROUP_OWNER:
 677                         /*
 678                          * Must be a complimentary role - cannot be a client to
 679                          * more than one peer.
 680                          */
 681                         if (incoming == role || client)
 682                                 return P2PS_SETUP_NONE;
 683
 684                         return P2PS_SETUP_CLIENT;
 685
 686                 case P2PS_SETUP_CLIENT:
 687                         /* Must be a complimentary role */
 688                         if (incoming != role) {
 689                                 conncap = P2PS_SETUP_GROUP_OWNER;
 690                                 goto grp_owner;
 691                         }
 692
 693                 default:
 694                         return P2PS_SETUP_NONE;
 695                 }
 696         }
 697
 698         /*
 699          * For now, we only will support ownership of one group, and being a
 700          * client of one group. Therefore, if we have either an existing GO
 701          * group, or an existing client group, we will not do a new GO
 702          * negotiation, but rather try to re-use the existing groups.
 703          */
 704         switch (incoming) {
 705         case P2PS_SETUP_NONE:
 706         case P2PS_SETUP_NEW:
 707                 if (client)
 708                         conncap = P2PS_SETUP_GROUP_OWNER;
 709                 else if (!owned_members)
 710                         conncap = P2PS_SETUP_NEW;
 711                 else if (incoming == P2PS_SETUP_NONE)
 712                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 713                 else
 714                         conncap = P2PS_SETUP_CLIENT;
 715                 break;
 716
 717         case P2PS_SETUP_CLIENT:
 718                 conncap = P2PS_SETUP_GROUP_OWNER;
 719                 break;
 720
 721         case P2PS_SETUP_GROUP_OWNER:
 722                 if (!client)
 723                         conncap = P2PS_SETUP_CLIENT;
 724                 break;
 725
 726         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 727         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 728                 if (client)
 729                         conncap = P2PS_SETUP_GROUP_OWNER;
 730                 else {
 731                         u8 r;
 732
 733                         if (os_get_random(&r, sizeof(r)) < 0 ||
 734                             (r & 1))
 735                                 conncap = P2PS_SETUP_CLIENT;
 736                         else
 737                                 conncap = P2PS_SETUP_GROUP_OWNER;
 738                 }
 739                 break;
 740
 741         default:
 742                 return P2PS_SETUP_NONE;
 743         }
 744
 745 grp_owner:
 746         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 747             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 748                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 749                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 750                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 751                            owner, owned_members, conncap);
 752
 753                 s = wpas_p2p_get_persistent_go(wpa_s);
 754
 755                 if (!s && !owner && p2p_no_group_iface) {
 756                         p2p_set_intended_addr(wpa_s->global->p2p,
 757                                               wpa_s->own_addr);
 758                 } else if (!s && !owner) {
 759                         if (wpas_p2p_add_group_interface(wpa_s,
 760                                                          WPA_IF_P2P_GO) < 0) {
 761                                 wpa_printf(MSG_ERROR,
 762                                            "P2P: Failed to allocate a new interface for the group");
 763                                 return P2PS_SETUP_NONE;
 764                         }
 765                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 766                         p2p_set_intended_addr(wpa_s->global->p2p,
 767                                               wpa_s->pending_interface_addr);
 768                 }
 769         }
 770
 771         return conncap;
 772 }
 773
 774
 775 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 776                                  enum p2p_group_removal_reason removal_reason)
 777 {
 778         struct wpa_ssid *ssid;
 779         char *gtype;
 780         const char *reason;
 781
 782         ssid = wpa_s->current_ssid;
 783         if (ssid == NULL) {
 784                 /*
 785                  * The current SSID was not known, but there may still be a
 786                  * pending P2P group interface waiting for provisioning or a
 787                  * P2P group that is trying to reconnect.
 788                  */
 789                 ssid = wpa_s->conf->ssid;
 790                 while (ssid) {
 791                         if (ssid->p2p_group && ssid->disabled != 2)
 792                                 break;
 793                         ssid = ssid->next;
 794                 }
 795                 if (ssid == NULL &&
 796                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 797                 {
 798                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 799                                    "not found");
 800                         return -1;
 801                 }
 802         }
 803         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 804                 gtype = "GO";
 805         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 806                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 807                 wpa_s->reassociate = 0;
 808                 wpa_s->disconnected = 1;
 809                 gtype = "client";
 810         } else
 811                 gtype = "GO";
 812
 813         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 814                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 815
 816         if (os_strcmp(gtype, "client") == 0) {
 817                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 818                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 819                                                 wpa_s, NULL)) {
 820                         wpa_printf(MSG_DEBUG,
 821                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 822                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 823                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 824                                              wpa_s, NULL);
 825                 }
 826         }
 827
 828         if (wpa_s->cross_connect_in_use) {
 829                 wpa_s->cross_connect_in_use = 0;
 830                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 831                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 832                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 833         }
 834         switch (removal_reason) {
 835         case P2P_GROUP_REMOVAL_REQUESTED:
 836                 reason = " reason=REQUESTED";
 837                 break;
 838         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 839                 reason = " reason=FORMATION_FAILED";
 840                 break;
 841         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 842                 reason = " reason=IDLE";
 843                 break;
 844         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 845                 reason = " reason=UNAVAILABLE";
 846                 break;
 847         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 848                 reason = " reason=GO_ENDING_SESSION";
 849                 break;
 850         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 851                 reason = " reason=PSK_FAILURE";
 852                 break;
 853         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 854                 reason = " reason=FREQ_CONFLICT";
 855                 break;
 856         default:
 857                 reason = "";
 858                 break;
 859         }
 860         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 861                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 862                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 863                                wpa_s->ifname, gtype, reason);
 864         }
 865
 866         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 867                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 868         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 869                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 870         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 871                                  wpa_s->parent, NULL) > 0) {
 872                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 873                            "timeout");
 874                 wpa_s->p2p_in_provisioning = 0;
 875         }
 876
 877         wpa_s->p2p_in_invitation = 0;
 878
 879         /*
 880          * Make sure wait for the first client does not remain active after the
 881          * group has been removed.
 882          */
 883         wpa_s->global->p2p_go_wait_client.sec = 0;
 884
 885         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 886                 struct wpa_global *global;
 887                 char *ifname;
 888                 enum wpa_driver_if_type type;
 889                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 890                         wpa_s->ifname);
 891                 global = wpa_s->global;
 892                 ifname = os_strdup(wpa_s->ifname);
 893                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 894                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 895                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 896                 wpa_s = global->ifaces;
 897                 if (wpa_s && ifname)
 898                         wpa_drv_if_remove(wpa_s, type, ifname);
 899                 os_free(ifname);
 900                 return 1;
 901         }
 902
 903         if (!wpa_s->p2p_go_group_formation_completed) {
 904                 wpa_s->global->p2p_group_formation = NULL;
 905                 wpa_s->p2p_in_provisioning = 0;
 906         }
 907
 908         wpa_s->show_group_started = 0;
 909         os_free(wpa_s->go_params);
 910         wpa_s->go_params = NULL;
 911
 912         os_free(wpa_s->p2p_group_common_freqs);
 913         wpa_s->p2p_group_common_freqs = NULL;
 914         wpa_s->p2p_group_common_freqs_num = 0;
 915
 916         wpa_s->waiting_presence_resp = 0;
 917
 918         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 919         if (ssid && (ssid->p2p_group ||
 920                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 921                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 922                 int id = ssid->id;
 923                 if (ssid == wpa_s->current_ssid) {
 924                         wpa_sm_set_config(wpa_s->wpa, NULL);
 925                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 926                         wpa_s->current_ssid = NULL;
 927                 }
 928                 /*
 929                  * Networks objects created during any P2P activities are not
 930                  * exposed out as they might/will confuse certain non-P2P aware
 931                  * applications since these network objects won't behave like
 932                  * regular ones.
 933                  *
 934                  * Likewise, we don't send out network removed signals for such
 935                  * network objects.
 936                  */
 937                 wpa_config_remove_network(wpa_s->conf, id);
 938                 wpa_supplicant_clear_status(wpa_s);
 939                 wpa_supplicant_cancel_sched_scan(wpa_s);
 940         } else {
 941                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 942                            "found");
 943         }
 944         if (wpa_s->ap_iface)
 945                 wpa_supplicant_ap_deinit(wpa_s);
 946         else
 947                 wpa_drv_deinit_p2p_cli(wpa_s);
 948
 949         return 0;
 950 }
 951
 952
 953 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 954                                      u8 *go_dev_addr,
 955                                      const u8 *ssid, size_t ssid_len)
 956 {
 957         struct wpa_bss *bss;
 958         const u8 *bssid;
 959         struct wpabuf *p2p;
 960         u8 group_capab;
 961         const u8 *addr;
 962
 963         if (wpa_s->go_params)
 964                 bssid = wpa_s->go_params->peer_interface_addr;
 965         else
 966                 bssid = wpa_s->bssid;
 967
 968         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 969         if (bss == NULL && wpa_s->go_params &&
 970             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 971                 bss = wpa_bss_get_p2p_dev_addr(
 972                         wpa_s, wpa_s->go_params->peer_device_addr);
 973         if (bss == NULL) {
 974                 u8 iface_addr[ETH_ALEN];
 975                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 976                                            iface_addr) == 0)
 977                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 978         }
 979         if (bss == NULL) {
 980                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 981                            "group is persistent - BSS " MACSTR " not found",
 982                            MAC2STR(bssid));
 983                 return 0;
 984         }
 985
 986         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 987         if (p2p == NULL)
 988                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 989                                                          P2P_IE_VENDOR_TYPE);
 990         if (p2p == NULL) {
 991                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 992                            "group is persistent - BSS " MACSTR
 993                            " did not include P2P IE", MAC2STR(bssid));
 994                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 995                             (u8 *) (bss + 1), bss->ie_len);
 996                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 997                             ((u8 *) bss + 1) + bss->ie_len,
 998                             bss->beacon_ie_len);
 999                 return 0;
1000         }
1001
1002         group_capab = p2p_get_group_capab(p2p);
1003         addr = p2p_get_go_dev_addr(p2p);
1004         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1005                    "group_capab=0x%x", group_capab);
1006         if (addr) {
1007                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1008                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1009                            MAC2STR(addr));
1010         } else
1011                 os_memset(go_dev_addr, 0, ETH_ALEN);
1012         wpabuf_free(p2p);
1013
1014         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1015                    "go_dev_addr=" MACSTR,
1016                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1017
1018         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1019 }
1020
1021
1022 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1023                                            struct wpa_ssid *ssid,
1024                                            const u8 *go_dev_addr)
1025 {
1026         struct wpa_ssid *s;
1027         int changed = 0;
1028
1029         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1030                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1031         for (s = wpa_s->conf->ssid; s; s = s->next) {
1032                 if (s->disabled == 2 &&
1033                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1034                     s->ssid_len == ssid->ssid_len &&
1035                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1036                         break;
1037         }
1038
1039         if (s) {
1040                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1041                            "entry");
1042                 if (ssid->passphrase && !s->passphrase)
1043                         changed = 1;
1044                 else if (ssid->passphrase && s->passphrase &&
1045                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1046                         changed = 1;
1047         } else {
1048                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1049                            "entry");
1050                 changed = 1;
1051                 s = wpa_config_add_network(wpa_s->conf);
1052                 if (s == NULL)
1053                         return -1;
1054
1055                 /*
1056                  * Instead of network_added we emit persistent_group_added
1057                  * notification. Also to keep the defense checks in
1058                  * persistent_group obj registration method, we set the
1059                  * relevant flags in s to designate it as a persistent group.
1060                  */
1061                 s->p2p_group = 1;
1062                 s->p2p_persistent_group = 1;
1063                 wpas_notify_persistent_group_added(wpa_s, s);
1064                 wpa_config_set_network_defaults(s);
1065         }
1066
1067         s->p2p_group = 1;
1068         s->p2p_persistent_group = 1;
1069         s->disabled = 2;
1070         s->bssid_set = 1;
1071         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1072         s->mode = ssid->mode;
1073         s->auth_alg = WPA_AUTH_ALG_OPEN;
1074         s->key_mgmt = WPA_KEY_MGMT_PSK;
1075         s->proto = WPA_PROTO_RSN;
1076         s->pairwise_cipher = WPA_CIPHER_CCMP;
1077         s->export_keys = 1;
1078         if (ssid->passphrase) {
1079                 os_free(s->passphrase);
1080                 s->passphrase = os_strdup(ssid->passphrase);
1081         }
1082         if (ssid->psk_set) {
1083                 s->psk_set = 1;
1084                 os_memcpy(s->psk, ssid->psk, 32);
1085         }
1086         if (s->passphrase && !s->psk_set)
1087                 wpa_config_update_psk(s);
1088         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1089                 os_free(s->ssid);
1090                 s->ssid = os_malloc(ssid->ssid_len);
1091         }
1092         if (s->ssid) {
1093                 s->ssid_len = ssid->ssid_len;
1094                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1095         }
1096         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1097                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1098                 wpa_s->global->add_psk = NULL;
1099                 changed = 1;
1100         }
1101
1102         if (changed && wpa_s->conf->update_config &&
1103             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1104                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1105         }
1106
1107         return s->id;
1108 }
1109
1110
1111 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1112                                                  const u8 *addr)
1113 {
1114         struct wpa_ssid *ssid, *s;
1115         u8 *n;
1116         size_t i;
1117         int found = 0;
1118         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1119
1120         ssid = wpa_s->current_ssid;
1121         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1122             !ssid->p2p_persistent_group)
1123                 return;
1124
1125         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1126                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1127                         continue;
1128
1129                 if (s->ssid_len == ssid->ssid_len &&
1130                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1131                         break;
1132         }
1133
1134         if (s == NULL)
1135                 return;
1136
1137         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1138                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1139                               ETH_ALEN) != 0)
1140                         continue;
1141
1142                 if (i == s->num_p2p_clients - 1)
1143                         return; /* already the most recent entry */
1144
1145                 /* move the entry to mark it most recent */
1146                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1147                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1148                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1149                 os_memcpy(s->p2p_client_list +
1150                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1151                           ETH_ALEN);
1152                 os_memset(s->p2p_client_list +
1153                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1154                           0xff, ETH_ALEN);
1155                 found = 1;
1156                 break;
1157         }
1158
1159         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1160                 n = os_realloc_array(s->p2p_client_list,
1161                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1162                 if (n == NULL)
1163                         return;
1164                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1165                           ETH_ALEN);
1166                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1167                           0xff, ETH_ALEN);
1168                 s->p2p_client_list = n;
1169                 s->num_p2p_clients++;
1170         } else if (!found && s->p2p_client_list) {
1171                 /* Not enough room for an additional entry - drop the oldest
1172                  * entry */
1173                 os_memmove(s->p2p_client_list,
1174                            s->p2p_client_list + 2 * ETH_ALEN,
1175                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1176                 os_memcpy(s->p2p_client_list +
1177                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1178                           addr, ETH_ALEN);
1179                 os_memset(s->p2p_client_list +
1180                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1181                           0xff, ETH_ALEN);
1182         }
1183
1184         if (p2p_wpa_s->conf->update_config &&
1185             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1186                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1187 }
1188
1189
1190 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1191                                    int go, struct wpa_ssid *ssid, int freq,
1192                                    const u8 *psk, const char *passphrase,
1193                                    const u8 *go_dev_addr, int persistent,
1194                                    const char *extra)
1195 {
1196         const char *ssid_txt;
1197         char psk_txt[65];
1198
1199         if (psk)
1200                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1201         else
1202                 psk_txt[0] = '\0';
1203
1204         if (ssid)
1205                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1206         else
1207                 ssid_txt = "";
1208
1209         if (passphrase && passphrase[0] == '\0')
1210                 passphrase = NULL;
1211
1212         /*
1213          * Include PSK/passphrase only in the control interface message and
1214          * leave it out from the debug log entry.
1215          */
1216         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1217                             P2P_EVENT_GROUP_STARTED
1218                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1219                             MACSTR "%s%s",
1220                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1221                             psk ? " psk=" : "", psk_txt,
1222                             passphrase ? " passphrase=\"" : "",
1223                             passphrase ? passphrase : "",
1224                             passphrase ? "\"" : "",
1225                             MAC2STR(go_dev_addr),
1226                             persistent ? " [PERSISTENT]" : "", extra);
1227         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1228                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1229                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1230                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1231                    extra);
1232 }
1233
1234
1235 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1236                                            int success, int already_deleted)
1237 {
1238         struct wpa_ssid *ssid;
1239         int client;
1240         int persistent;
1241         u8 go_dev_addr[ETH_ALEN];
1242         int network_id = -1;
1243
1244         /*
1245          * This callback is likely called for the main interface. Update wpa_s
1246          * to use the group interface if a new interface was created for the
1247          * group.
1248          */
1249         if (wpa_s->global->p2p_group_formation)
1250                 wpa_s = wpa_s->global->p2p_group_formation;
1251         if (wpa_s->p2p_go_group_formation_completed) {
1252                 wpa_s->global->p2p_group_formation = NULL;
1253                 wpa_s->p2p_in_provisioning = 0;
1254         }
1255         wpa_s->p2p_in_invitation = 0;
1256         wpa_s->group_formation_reported = 1;
1257
1258         if (!success) {
1259                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1260                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1261                 if (already_deleted)
1262                         return;
1263                 wpas_p2p_group_delete(wpa_s,
1264                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1265                 return;
1266         }
1267
1268         wpa_msg_global(wpa_s->parent, MSG_INFO,
1269                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1270
1271         ssid = wpa_s->current_ssid;
1272         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1273                 ssid->mode = WPAS_MODE_P2P_GO;
1274                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1275                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1276         }
1277
1278         persistent = 0;
1279         if (ssid) {
1280                 client = ssid->mode == WPAS_MODE_INFRA;
1281                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1282                         persistent = ssid->p2p_persistent_group;
1283                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1284                                   ETH_ALEN);
1285                 } else
1286                         persistent = wpas_p2p_persistent_group(wpa_s,
1287                                                                go_dev_addr,
1288                                                                ssid->ssid,
1289                                                                ssid->ssid_len);
1290         } else {
1291                 client = wpa_s->p2p_group_interface ==
1292                         P2P_GROUP_INTERFACE_CLIENT;
1293                 os_memset(go_dev_addr, 0, ETH_ALEN);
1294         }
1295
1296         wpa_s->show_group_started = 0;
1297         if (client) {
1298                 /*
1299                  * Indicate event only after successfully completed 4-way
1300                  * handshake, i.e., when the interface is ready for data
1301                  * packets.
1302                  */
1303                 wpa_s->show_group_started = 1;
1304         } else {
1305                 wpas_p2p_group_started(wpa_s, 1, ssid,
1306                                        ssid ? ssid->frequency : 0,
1307                                        ssid && ssid->passphrase == NULL &&
1308                                        ssid->psk_set ? ssid->psk : NULL,
1309                                        ssid ? ssid->passphrase : NULL,
1310                                        go_dev_addr, persistent, "");
1311                 wpas_p2p_cross_connect_setup(wpa_s);
1312                 wpas_p2p_set_group_idle_timeout(wpa_s);
1313         }
1314
1315         if (persistent)
1316                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1317                                                              ssid, go_dev_addr);
1318         else {
1319                 os_free(wpa_s->global->add_psk);
1320                 wpa_s->global->add_psk = NULL;
1321         }
1322         if (network_id < 0 && ssid)
1323                 network_id = ssid->id;
1324         if (!client) {
1325                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1326                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1327         }
1328 }
1329
1330
1331 struct send_action_work {
1332         unsigned int freq;
1333         u8 dst[ETH_ALEN];
1334         u8 src[ETH_ALEN];
1335         u8 bssid[ETH_ALEN];
1336         size_t len;
1337         unsigned int wait_time;
1338         u8 buf[0];
1339 };
1340
1341
1342 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1343                                               void *timeout_ctx)
1344 {
1345         struct wpa_supplicant *wpa_s = eloop_ctx;
1346
1347         if (!wpa_s->p2p_send_action_work)
1348                 return;
1349
1350         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1351         os_free(wpa_s->p2p_send_action_work->ctx);
1352         radio_work_done(wpa_s->p2p_send_action_work);
1353         wpa_s->p2p_send_action_work = NULL;
1354 }
1355
1356
1357 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1358 {
1359         if (wpa_s->p2p_send_action_work) {
1360                 struct send_action_work *awork;
1361                 awork = wpa_s->p2p_send_action_work->ctx;
1362                 if (awork->wait_time == 0) {
1363                         os_free(awork);
1364                         radio_work_done(wpa_s->p2p_send_action_work);
1365                         wpa_s->p2p_send_action_work = NULL;
1366                 } else {
1367                         /*
1368                          * In theory, this should not be needed, but number of
1369                          * places in the P2P code is still using non-zero wait
1370                          * time for the last Action frame in the sequence and
1371                          * some of these do not call send_action_done().
1372                          */
1373                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1374                                              wpa_s, NULL);
1375                         eloop_register_timeout(
1376                                 0, awork->wait_time * 1000,
1377                                 wpas_p2p_send_action_work_timeout,
1378                                 wpa_s, NULL);
1379                 }
1380         }
1381 }
1382
1383
1384 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1385                                            unsigned int freq,
1386                                            const u8 *dst, const u8 *src,
1387                                            const u8 *bssid,
1388                                            const u8 *data, size_t data_len,
1389                                            enum offchannel_send_action_result
1390                                            result)
1391 {
1392         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1393
1394         wpas_p2p_action_tx_clear(wpa_s);
1395
1396         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1397                 return;
1398
1399         switch (result) {
1400         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1401                 res = P2P_SEND_ACTION_SUCCESS;
1402                 break;
1403         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1404                 res = P2P_SEND_ACTION_NO_ACK;
1405                 break;
1406         case OFFCHANNEL_SEND_ACTION_FAILED:
1407                 res = P2P_SEND_ACTION_FAILED;
1408                 break;
1409         }
1410
1411         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1412
1413         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1414             wpa_s->pending_pd_before_join &&
1415             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1416              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1417             wpa_s->p2p_fallback_to_go_neg) {
1418                 wpa_s->pending_pd_before_join = 0;
1419                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1420                         "during p2p_connect-auto");
1421                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1422                                P2P_EVENT_FALLBACK_TO_GO_NEG
1423                                "reason=no-ACK-to-PD-Req");
1424                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1425                 return;
1426         }
1427 }
1428
1429
1430 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1431 {
1432         struct wpa_supplicant *wpa_s = work->wpa_s;
1433         struct send_action_work *awork = work->ctx;
1434
1435         if (deinit) {
1436                 if (work->started) {
1437                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1438                                              wpa_s, NULL);
1439                         wpa_s->p2p_send_action_work = NULL;
1440                         offchannel_send_action_done(wpa_s);
1441                 }
1442                 os_free(awork);
1443                 return;
1444         }
1445
1446         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1447                                    awork->bssid, awork->buf, awork->len,
1448                                    awork->wait_time,
1449                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1450                 os_free(awork);
1451                 radio_work_done(work);
1452                 return;
1453         }
1454         wpa_s->p2p_send_action_work = work;
1455 }
1456
1457
1458 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1459                                  unsigned int freq, const u8 *dst,
1460                                  const u8 *src, const u8 *bssid, const u8 *buf,
1461                                  size_t len, unsigned int wait_time)
1462 {
1463         struct send_action_work *awork;
1464
1465         if (wpa_s->p2p_send_action_work) {
1466                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1467                 return -1;
1468         }
1469
1470         awork = os_zalloc(sizeof(*awork) + len);
1471         if (awork == NULL)
1472                 return -1;
1473
1474         awork->freq = freq;
1475         os_memcpy(awork->dst, dst, ETH_ALEN);
1476         os_memcpy(awork->src, src, ETH_ALEN);
1477         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1478         awork->len = len;
1479         awork->wait_time = wait_time;
1480         os_memcpy(awork->buf, buf, len);
1481
1482         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1483                            wpas_send_action_cb, awork) < 0) {
1484                 os_free(awork);
1485                 return -1;
1486         }
1487
1488         return 0;
1489 }
1490
1491
1492 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1493                             const u8 *src, const u8 *bssid, const u8 *buf,
1494                             size_t len, unsigned int wait_time)
1495 {
1496         struct wpa_supplicant *wpa_s = ctx;
1497         int listen_freq = -1, send_freq = -1;
1498
1499         if (wpa_s->p2p_listen_work)
1500                 listen_freq = wpa_s->p2p_listen_work->freq;
1501         if (wpa_s->p2p_send_action_work)
1502                 send_freq = wpa_s->p2p_send_action_work->freq;
1503         if (listen_freq != (int) freq && send_freq != (int) freq) {
1504                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1505                            listen_freq, send_freq);
1506                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1507                                              len, wait_time);
1508         }
1509
1510         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1511         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1512                                       wait_time,
1513                                       wpas_p2p_send_action_tx_status, 1);
1514 }
1515
1516
1517 static void wpas_send_action_done(void *ctx)
1518 {
1519         struct wpa_supplicant *wpa_s = ctx;
1520
1521         if (wpa_s->p2p_send_action_work) {
1522                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1523                                      wpa_s, NULL);
1524                 os_free(wpa_s->p2p_send_action_work->ctx);
1525                 radio_work_done(wpa_s->p2p_send_action_work);
1526                 wpa_s->p2p_send_action_work = NULL;
1527         }
1528
1529         offchannel_send_action_done(wpa_s);
1530 }
1531
1532
1533 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1534                                     struct p2p_go_neg_results *params)
1535 {
1536         if (wpa_s->go_params == NULL) {
1537                 wpa_s->go_params = os_malloc(sizeof(*params));
1538                 if (wpa_s->go_params == NULL)
1539                         return -1;
1540         }
1541         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1542         return 0;
1543 }
1544
1545
1546 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1547                                     struct p2p_go_neg_results *res)
1548 {
1549         wpa_s->group_formation_reported = 0;
1550         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1551                    " dev_addr " MACSTR " wps_method %d",
1552                    MAC2STR(res->peer_interface_addr),
1553                    MAC2STR(res->peer_device_addr), res->wps_method);
1554         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1555                           res->ssid, res->ssid_len);
1556         wpa_supplicant_ap_deinit(wpa_s);
1557         wpas_copy_go_neg_results(wpa_s, res);
1558         if (res->wps_method == WPS_PBC) {
1559                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1560 #ifdef CONFIG_WPS_NFC
1561         } else if (res->wps_method == WPS_NFC) {
1562                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1563                                    res->peer_interface_addr,
1564                                    wpa_s->parent->p2p_oob_dev_pw,
1565                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1566                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1567                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1568                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1569                                    NULL,
1570                                    NULL, 0, 0);
1571 #endif /* CONFIG_WPS_NFC */
1572         } else {
1573                 u16 dev_pw_id = DEV_PW_DEFAULT;
1574                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1575                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1576                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1577                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1578                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1579                                    wpa_s->p2p_pin, 1, dev_pw_id);
1580         }
1581 }
1582
1583
1584 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1585                                   struct wpa_ssid *ssid)
1586 {
1587         struct wpa_ssid *persistent;
1588         struct psk_list_entry *psk;
1589         struct hostapd_data *hapd;
1590
1591         if (!wpa_s->ap_iface)
1592                 return;
1593
1594         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1595                                              ssid->ssid_len);
1596         if (persistent == NULL)
1597                 return;
1598
1599         hapd = wpa_s->ap_iface->bss[0];
1600
1601         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1602                          list) {
1603                 struct hostapd_wpa_psk *hpsk;
1604
1605                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1606                         MACSTR " psk=%d",
1607                         MAC2STR(psk->addr), psk->p2p);
1608                 hpsk = os_zalloc(sizeof(*hpsk));
1609                 if (hpsk == NULL)
1610                         break;
1611                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1612                 if (psk->p2p)
1613                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1614                 else
1615                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1616                 hpsk->next = hapd->conf->ssid.wpa_psk;
1617                 hapd->conf->ssid.wpa_psk = hpsk;
1618         }
1619 }
1620
1621
1622 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1623 {
1624         unsigned int i;
1625
1626         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1627                 wpa_s->p2p_group_common_freqs_num);
1628
1629         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1630                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1631                         i, wpa_s->p2p_group_common_freqs[i]);
1632 }
1633
1634
1635 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1636                                            struct p2p_go_neg_results *params)
1637 {
1638         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1639
1640         wpa_s->p2p_group_common_freqs_num = 0;
1641         os_free(wpa_s->p2p_group_common_freqs);
1642         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1643         if (!wpa_s->p2p_group_common_freqs)
1644                 return;
1645
1646         for (i = 0; i < len; i++) {
1647                 if (!wpa_s->go_params->freq_list[i])
1648                         break;
1649                 wpa_s->p2p_group_common_freqs[i] =
1650                         wpa_s->go_params->freq_list[i];
1651         }
1652         wpa_s->p2p_group_common_freqs_num = i;
1653 }
1654
1655
1656 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1657 {
1658 #ifndef CONFIG_NO_CONFIG_WRITE
1659         if (wpa_s->parent->conf->update_config &&
1660             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1661                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1662 #endif /* CONFIG_NO_CONFIG_WRITE */
1663 }
1664
1665
1666 static void p2p_go_configured(void *ctx, void *data)
1667 {
1668         struct wpa_supplicant *wpa_s = ctx;
1669         struct p2p_go_neg_results *params = data;
1670         struct wpa_ssid *ssid;
1671         int network_id = -1;
1672
1673         p2p_go_save_group_common_freqs(wpa_s, params);
1674         p2p_go_dump_common_freqs(wpa_s);
1675
1676         ssid = wpa_s->current_ssid;
1677         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1678                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1679                 if (wpa_s->global->p2p_group_formation == wpa_s)
1680                         wpa_s->global->p2p_group_formation = NULL;
1681                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1682                                        params->passphrase[0] == '\0' ?
1683                                        params->psk : NULL,
1684                                        params->passphrase,
1685                                        wpa_s->global->p2p_dev_addr,
1686                                        params->persistent_group, "");
1687                 wpa_s->group_formation_reported = 1;
1688
1689                 if (wpa_s->parent->p2ps_join_addr_valid) {
1690                         wpa_dbg(wpa_s, MSG_DEBUG,
1691                                 "P2PS: Setting default PIN for " MACSTR,
1692                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1693                         wpa_supplicant_ap_wps_pin(wpa_s,
1694                                                   wpa_s->parent->p2ps_join_addr,
1695                                                   "12345670", NULL, 0, 0);
1696                         wpa_s->parent->p2ps_join_addr_valid = 0;
1697                 }
1698
1699                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1700                 if (params->persistent_group) {
1701                         network_id = wpas_p2p_store_persistent_group(
1702                                 wpa_s->parent, ssid,
1703                                 wpa_s->global->p2p_dev_addr);
1704                         wpas_p2p_add_psk_list(wpa_s, ssid);
1705                 }
1706                 if (network_id < 0)
1707                         network_id = ssid->id;
1708                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1709                 wpas_p2p_cross_connect_setup(wpa_s);
1710                 wpas_p2p_set_group_idle_timeout(wpa_s);
1711
1712                 if (wpa_s->p2p_first_connection_timeout) {
1713                         wpa_dbg(wpa_s, MSG_DEBUG,
1714                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1715                                 wpa_s->p2p_first_connection_timeout);
1716                         wpa_s->p2p_go_group_formation_completed = 0;
1717                         wpa_s->global->p2p_group_formation = wpa_s;
1718                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1719                                              wpa_s->parent, NULL);
1720                         eloop_register_timeout(
1721                                 wpa_s->p2p_first_connection_timeout, 0,
1722                                 wpas_p2p_group_formation_timeout,
1723                                 wpa_s->parent, NULL);
1724                 }
1725
1726                 return;
1727         }
1728
1729         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1730         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1731                                               params->peer_interface_addr)) {
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1733                            "filtering");
1734                 return;
1735         }
1736         if (params->wps_method == WPS_PBC) {
1737                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1738                                           params->peer_device_addr);
1739 #ifdef CONFIG_WPS_NFC
1740         } else if (params->wps_method == WPS_NFC) {
1741                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1742                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1743                     !wpa_s->parent->p2p_oob_dev_pw) {
1744                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1745                         return;
1746                 }
1747                 wpas_ap_wps_add_nfc_pw(
1748                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1749                         wpa_s->parent->p2p_oob_dev_pw,
1750                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1751                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1752 #endif /* CONFIG_WPS_NFC */
1753         } else if (wpa_s->p2p_pin[0])
1754                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1755                                           wpa_s->p2p_pin, NULL, 0, 0);
1756         os_free(wpa_s->go_params);
1757         wpa_s->go_params = NULL;
1758 }
1759
1760
1761 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1762                               struct p2p_go_neg_results *params,
1763                               int group_formation)
1764 {
1765         struct wpa_ssid *ssid;
1766
1767         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1768         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1769                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1770                         "results");
1771                 return;
1772         }
1773
1774         ssid = wpa_config_add_network(wpa_s->conf);
1775         if (ssid == NULL) {
1776                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1777                 return;
1778         }
1779
1780         wpa_s->show_group_started = 0;
1781         wpa_s->p2p_go_group_formation_completed = 0;
1782         wpa_s->group_formation_reported = 0;
1783
1784         wpa_config_set_network_defaults(ssid);
1785         ssid->temporary = 1;
1786         ssid->p2p_group = 1;
1787         ssid->p2p_persistent_group = params->persistent_group;
1788         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1789                 WPAS_MODE_P2P_GO;
1790         ssid->frequency = params->freq;
1791         ssid->ht40 = params->ht40;
1792         ssid->vht = params->vht;
1793         ssid->ssid = os_zalloc(params->ssid_len + 1);
1794         if (ssid->ssid) {
1795                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1796                 ssid->ssid_len = params->ssid_len;
1797         }
1798         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1799         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1800         ssid->proto = WPA_PROTO_RSN;
1801         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1802         ssid->group_cipher = WPA_CIPHER_CCMP;
1803         if (params->freq > 56160) {
1804                 /*
1805                  * Enable GCMP instead of CCMP as pairwise_cipher and
1806                  * group_cipher in 60 GHz.
1807                  */
1808                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1809                 ssid->group_cipher = WPA_CIPHER_GCMP;
1810         }
1811         if (os_strlen(params->passphrase) > 0) {
1812                 ssid->passphrase = os_strdup(params->passphrase);
1813                 if (ssid->passphrase == NULL) {
1814                         wpa_msg_global(wpa_s, MSG_ERROR,
1815                                        "P2P: Failed to copy passphrase for GO");
1816                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1817                         return;
1818                 }
1819         } else
1820                 ssid->passphrase = NULL;
1821         ssid->psk_set = params->psk_set;
1822         if (ssid->psk_set)
1823                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1824         else if (ssid->passphrase)
1825                 wpa_config_update_psk(ssid);
1826         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1827
1828         wpa_s->ap_configured_cb = p2p_go_configured;
1829         wpa_s->ap_configured_cb_ctx = wpa_s;
1830         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1831         wpa_s->scan_req = NORMAL_SCAN_REQ;
1832         wpa_s->connect_without_scan = ssid;
1833         wpa_s->reassociate = 1;
1834         wpa_s->disconnected = 0;
1835         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1836                 "start GO)");
1837         wpa_supplicant_req_scan(wpa_s, 0, 0);
1838 }
1839
1840
1841 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1842                                   const struct wpa_supplicant *src)
1843 {
1844         struct wpa_config *d;
1845         const struct wpa_config *s;
1846
1847         d = dst->conf;
1848         s = src->conf;
1849
1850 #define C(n) if (s->n) d->n = os_strdup(s->n)
1851         C(device_name);
1852         C(manufacturer);
1853         C(model_name);
1854         C(model_number);
1855         C(serial_number);
1856         C(config_methods);
1857 #undef C
1858
1859         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1860         os_memcpy(d->sec_device_type, s->sec_device_type,
1861                   sizeof(d->sec_device_type));
1862         d->num_sec_device_types = s->num_sec_device_types;
1863
1864         d->p2p_group_idle = s->p2p_group_idle;
1865         d->p2p_intra_bss = s->p2p_intra_bss;
1866         d->persistent_reconnect = s->persistent_reconnect;
1867         d->max_num_sta = s->max_num_sta;
1868         d->pbc_in_m1 = s->pbc_in_m1;
1869         d->ignore_old_scan_res = s->ignore_old_scan_res;
1870         d->beacon_int = s->beacon_int;
1871         d->dtim_period = s->dtim_period;
1872         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1873         d->disassoc_low_ack = s->disassoc_low_ack;
1874         d->disable_scan_offload = s->disable_scan_offload;
1875         d->passive_scan = s->passive_scan;
1876
1877         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1878                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1879                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1880         }
1881         d->p2p_cli_probe = s->p2p_cli_probe;
1882 }
1883
1884
1885 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1886                                       char *ifname, size_t len)
1887 {
1888         char *ifname_ptr = wpa_s->ifname;
1889
1890         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1891                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1892                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1893         }
1894
1895         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1896         if (os_strlen(ifname) >= IFNAMSIZ &&
1897             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1898                 int res;
1899
1900                 /* Try to avoid going over the IFNAMSIZ length limit */
1901                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1902                 if (os_snprintf_error(len, res) && len)
1903                         ifname[len - 1] = '\0';
1904         }
1905 }
1906
1907
1908 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1909                                         enum wpa_driver_if_type type)
1910 {
1911         char ifname[120], force_ifname[120];
1912
1913         if (wpa_s->pending_interface_name[0]) {
1914                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1915                            "- skip creation of a new one");
1916                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1917                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1918                                    "unknown?! ifname='%s'",
1919                                    wpa_s->pending_interface_name);
1920                         return -1;
1921                 }
1922                 return 0;
1923         }
1924
1925         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1926         force_ifname[0] = '\0';
1927
1928         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1929                    ifname);
1930         wpa_s->p2p_group_idx++;
1931
1932         wpa_s->pending_interface_type = type;
1933         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1934                            wpa_s->pending_interface_addr, NULL) < 0) {
1935                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1936                            "interface");
1937                 return -1;
1938         }
1939
1940         if (force_ifname[0]) {
1941                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1942                            force_ifname);
1943                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1944                            sizeof(wpa_s->pending_interface_name));
1945         } else
1946                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1947                            sizeof(wpa_s->pending_interface_name));
1948         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1949                    MACSTR, wpa_s->pending_interface_name,
1950                    MAC2STR(wpa_s->pending_interface_addr));
1951
1952         return 0;
1953 }
1954
1955
1956 static void wpas_p2p_remove_pending_group_interface(
1957         struct wpa_supplicant *wpa_s)
1958 {
1959         if (!wpa_s->pending_interface_name[0] ||
1960             is_zero_ether_addr(wpa_s->pending_interface_addr))
1961                 return; /* No pending virtual interface */
1962
1963         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1964                    wpa_s->pending_interface_name);
1965         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1966                           wpa_s->pending_interface_name);
1967         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1968         wpa_s->pending_interface_name[0] = '\0';
1969         wpa_s->global->pending_group_iface_for_p2ps = 0;
1970 }
1971
1972
1973 static struct wpa_supplicant *
1974 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1975 {
1976         struct wpa_interface iface;
1977         struct wpa_supplicant *group_wpa_s;
1978
1979         if (!wpa_s->pending_interface_name[0]) {
1980                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1981                 if (!wpas_p2p_create_iface(wpa_s))
1982                         return NULL;
1983                 /*
1984                  * Something has forced us to remove the pending interface; try
1985                  * to create a new one and hope for the best that we will get
1986                  * the same local address.
1987                  */
1988                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1989                                                  WPA_IF_P2P_CLIENT) < 0)
1990                         return NULL;
1991         }
1992
1993         os_memset(&iface, 0, sizeof(iface));
1994         iface.ifname = wpa_s->pending_interface_name;
1995         iface.driver = wpa_s->driver->name;
1996         if (wpa_s->conf->ctrl_interface == NULL &&
1997             wpa_s->parent != wpa_s &&
1998             wpa_s->p2p_mgmt &&
1999             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2000                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2001         else
2002                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2003         iface.driver_param = wpa_s->conf->driver_param;
2004         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2005         if (group_wpa_s == NULL) {
2006                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2007                            "wpa_supplicant interface");
2008                 return NULL;
2009         }
2010         wpa_s->pending_interface_name[0] = '\0';
2011         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2012                 P2P_GROUP_INTERFACE_CLIENT;
2013         wpa_s->global->p2p_group_formation = group_wpa_s;
2014         wpa_s->global->pending_group_iface_for_p2ps = 0;
2015
2016         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2017
2018         return group_wpa_s;
2019 }
2020
2021
2022 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2023                                              void *timeout_ctx)
2024 {
2025         struct wpa_supplicant *wpa_s = eloop_ctx;
2026         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2027         wpas_p2p_group_formation_failed(wpa_s, 0);
2028 }
2029
2030
2031 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2032                                             int already_deleted)
2033 {
2034         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2035                              wpa_s->parent, NULL);
2036         if (wpa_s->global->p2p)
2037                 p2p_group_formation_failed(wpa_s->global->p2p);
2038         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2039 }
2040
2041
2042 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2043 {
2044         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2045         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2046                              wpa_s->parent, NULL);
2047         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2048                                wpa_s->parent, NULL);
2049         wpa_s->global->p2p_fail_on_wps_complete = 0;
2050 }
2051
2052
2053 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2054 {
2055         if (wpa_s->global->p2p_group_formation != wpa_s)
2056                 return;
2057         /* Speed up group formation timeout since this cannot succeed */
2058         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2059                              wpa_s->parent, NULL);
2060         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2061                                wpa_s->parent, NULL);
2062 }
2063
2064
2065 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2066 {
2067         struct wpa_supplicant *wpa_s = ctx;
2068
2069         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2070                 wpa_drv_cancel_remain_on_channel(wpa_s);
2071                 wpa_s->off_channel_freq = 0;
2072                 wpa_s->roc_waiting_drv_freq = 0;
2073         }
2074
2075         if (res->status) {
2076                 wpa_msg_global(wpa_s, MSG_INFO,
2077                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2078                                res->status);
2079                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2080                 wpas_p2p_remove_pending_group_interface(wpa_s);
2081                 return;
2082         }
2083
2084         if (wpa_s->p2p_go_ht40)
2085                 res->ht40 = 1;
2086         if (wpa_s->p2p_go_vht)
2087                 res->vht = 1;
2088
2089         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2090                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2091                        " wps_method=%s",
2092                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2093                        MAC2STR(res->peer_device_addr),
2094                        MAC2STR(res->peer_interface_addr),
2095                        p2p_wps_method_text(res->wps_method));
2096         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2097
2098         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2099                 struct wpa_ssid *ssid;
2100                 ssid = wpa_config_get_network(wpa_s->conf,
2101                                               wpa_s->p2p_persistent_id);
2102                 if (ssid && ssid->disabled == 2 &&
2103                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2104                         size_t len = os_strlen(ssid->passphrase);
2105                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2106                                    "on requested persistent group");
2107                         os_memcpy(res->passphrase, ssid->passphrase, len);
2108                         res->passphrase[len] = '\0';
2109                 }
2110         }
2111
2112         if (wpa_s->create_p2p_iface) {
2113                 struct wpa_supplicant *group_wpa_s =
2114                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2115                 if (group_wpa_s == NULL) {
2116                         wpas_p2p_remove_pending_group_interface(wpa_s);
2117                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2118                                              wpa_s, NULL);
2119                         wpas_p2p_group_formation_failed(wpa_s, 1);
2120                         return;
2121                 }
2122                 if (group_wpa_s != wpa_s) {
2123                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2124                                   sizeof(group_wpa_s->p2p_pin));
2125                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2126                 }
2127                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2128                 wpa_s->pending_interface_name[0] = '\0';
2129                 group_wpa_s->p2p_in_provisioning = 1;
2130
2131                 if (res->role_go)
2132                         wpas_start_wps_go(group_wpa_s, res, 1);
2133                 else
2134                         wpas_start_wps_enrollee(group_wpa_s, res);
2135         } else {
2136                 wpa_s->p2p_in_provisioning = 1;
2137                 wpa_s->global->p2p_group_formation = wpa_s;
2138
2139                 if (res->role_go)
2140                         wpas_start_wps_go(wpa_s, res, 1);
2141                 else
2142                         wpas_start_wps_enrollee(ctx, res);
2143         }
2144
2145         wpa_s->p2p_long_listen = 0;
2146         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2147
2148         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2149         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2150                                (res->peer_config_timeout % 100) * 10000,
2151                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2152 }
2153
2154
2155 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2156                                u8 go_intent)
2157 {
2158         struct wpa_supplicant *wpa_s = ctx;
2159         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2160                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2161                        dev_passwd_id, go_intent);
2162
2163         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2164 }
2165
2166
2167 static void wpas_dev_found(void *ctx, const u8 *addr,
2168                            const struct p2p_peer_info *info,
2169                            int new_device)
2170 {
2171 #ifndef CONFIG_NO_STDOUT_DEBUG
2172         struct wpa_supplicant *wpa_s = ctx;
2173         char devtype[WPS_DEV_TYPE_BUFSIZE];
2174         char *wfd_dev_info_hex = NULL;
2175
2176 #ifdef CONFIG_WIFI_DISPLAY
2177         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2178                                                     WFD_SUBELEM_DEVICE_INFO);
2179 #endif /* CONFIG_WIFI_DISPLAY */
2180
2181         if (info->p2ps_instance) {
2182                 char str[256];
2183                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2184                 size_t len = wpabuf_len(info->p2ps_instance);
2185
2186                 while (len) {
2187                         u32 id;
2188                         u16 methods;
2189                         u8 str_len;
2190
2191                         if (len < 4 + 2 + 1)
2192                                 break;
2193                         id = WPA_GET_LE32(buf);
2194                         buf += sizeof(u32);
2195                         methods = WPA_GET_BE16(buf);
2196                         buf += sizeof(u16);
2197                         str_len = *buf++;
2198                         if (str_len > len - 4 - 2 - 1)
2199                                 break;
2200                         os_memcpy(str, buf, str_len);
2201                         str[str_len] = '\0';
2202                         buf += str_len;
2203                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2204
2205                         wpa_msg_global(wpa_s, MSG_INFO,
2206                                        P2P_EVENT_DEVICE_FOUND MACSTR
2207                                        " p2p_dev_addr=" MACSTR
2208                                        " pri_dev_type=%s name='%s'"
2209                                        " config_methods=0x%x"
2210                                        " dev_capab=0x%x"
2211                                        " group_capab=0x%x"
2212                                        " adv_id=%x asp_svc=%s%s",
2213                                        MAC2STR(addr),
2214                                        MAC2STR(info->p2p_device_addr),
2215                                        wps_dev_type_bin2str(
2216                                                info->pri_dev_type,
2217                                                devtype, sizeof(devtype)),
2218                                        info->device_name, methods,
2219                                        info->dev_capab, info->group_capab,
2220                                        id, str,
2221                                        info->vendor_elems ?
2222                                        " vendor_elems=1" : "");
2223                 }
2224                 goto done;
2225         }
2226
2227         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2228                        " p2p_dev_addr=" MACSTR
2229                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2230                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2231                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2232                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2233                                             sizeof(devtype)),
2234                        info->device_name, info->config_methods,
2235                        info->dev_capab, info->group_capab,
2236                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2237                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2238                        info->vendor_elems ? " vendor_elems=1" : "",
2239                        new_device);
2240
2241 done:
2242         os_free(wfd_dev_info_hex);
2243 #endif /* CONFIG_NO_STDOUT_DEBUG */
2244
2245         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2246 }
2247
2248
2249 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2250 {
2251         struct wpa_supplicant *wpa_s = ctx;
2252
2253         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2254                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2255
2256         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2257 }
2258
2259
2260 static void wpas_find_stopped(void *ctx)
2261 {
2262         struct wpa_supplicant *wpa_s = ctx;
2263         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2264         wpas_notify_p2p_find_stopped(wpa_s);
2265 }
2266
2267
2268 struct wpas_p2p_listen_work {
2269         unsigned int freq;
2270         unsigned int duration;
2271         struct wpabuf *probe_resp_ie;
2272 };
2273
2274
2275 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2276 {
2277         if (lwork == NULL)
2278                 return;
2279         wpabuf_free(lwork->probe_resp_ie);
2280         os_free(lwork);
2281 }
2282
2283
2284 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2285 {
2286         struct wpas_p2p_listen_work *lwork;
2287
2288         if (!wpa_s->p2p_listen_work)
2289                 return;
2290
2291         lwork = wpa_s->p2p_listen_work->ctx;
2292         wpas_p2p_listen_work_free(lwork);
2293         radio_work_done(wpa_s->p2p_listen_work);
2294         wpa_s->p2p_listen_work = NULL;
2295 }
2296
2297
2298 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2299 {
2300         struct wpa_supplicant *wpa_s = work->wpa_s;
2301         struct wpas_p2p_listen_work *lwork = work->ctx;
2302         unsigned int duration;
2303
2304         if (deinit) {
2305                 if (work->started) {
2306                         wpa_s->p2p_listen_work = NULL;
2307                         wpas_stop_listen(wpa_s);
2308                 }
2309                 wpas_p2p_listen_work_free(lwork);
2310                 return;
2311         }
2312
2313         wpa_s->p2p_listen_work = work;
2314
2315         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2316
2317         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2318                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2319                            "report received Probe Request frames");
2320                 wpas_p2p_listen_work_done(wpa_s);
2321                 return;
2322         }
2323
2324         wpa_s->pending_listen_freq = lwork->freq;
2325         wpa_s->pending_listen_duration = lwork->duration;
2326
2327         duration = lwork->duration;
2328 #ifdef CONFIG_TESTING_OPTIONS
2329         if (wpa_s->extra_roc_dur) {
2330                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2331                            duration, duration + wpa_s->extra_roc_dur);
2332                 duration += wpa_s->extra_roc_dur;
2333         }
2334 #endif /* CONFIG_TESTING_OPTIONS */
2335
2336         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2337                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2338                            "to remain on channel (%u MHz) for Listen "
2339                            "state", lwork->freq);
2340                 wpas_p2p_listen_work_done(wpa_s);
2341                 wpa_s->pending_listen_freq = 0;
2342                 return;
2343         }
2344         wpa_s->off_channel_freq = 0;
2345         wpa_s->roc_waiting_drv_freq = lwork->freq;
2346 }
2347
2348
2349 static int wpas_start_listen(void *ctx, unsigned int freq,
2350                              unsigned int duration,
2351                              const struct wpabuf *probe_resp_ie)
2352 {
2353         struct wpa_supplicant *wpa_s = ctx;
2354         struct wpas_p2p_listen_work *lwork;
2355
2356         if (wpa_s->p2p_listen_work) {
2357                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2358                 return -1;
2359         }
2360
2361         lwork = os_zalloc(sizeof(*lwork));
2362         if (lwork == NULL)
2363                 return -1;
2364         lwork->freq = freq;
2365         lwork->duration = duration;
2366         if (probe_resp_ie) {
2367                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2368                 if (lwork->probe_resp_ie == NULL) {
2369                         wpas_p2p_listen_work_free(lwork);
2370                         return -1;
2371                 }
2372         }
2373
2374         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2375                            lwork) < 0) {
2376                 wpas_p2p_listen_work_free(lwork);
2377                 return -1;
2378         }
2379
2380         return 0;
2381 }
2382
2383
2384 static void wpas_stop_listen(void *ctx)
2385 {
2386         struct wpa_supplicant *wpa_s = ctx;
2387         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2388                 wpa_drv_cancel_remain_on_channel(wpa_s);
2389                 wpa_s->off_channel_freq = 0;
2390                 wpa_s->roc_waiting_drv_freq = 0;
2391         }
2392         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2393
2394         /*
2395          * Don't cancel Probe Request RX reporting for a connected P2P Client
2396          * handling Probe Request frames.
2397          */
2398         if (!wpa_s->p2p_cli_probe)
2399                 wpa_drv_probe_req_report(wpa_s, 0);
2400
2401         wpas_p2p_listen_work_done(wpa_s);
2402 }
2403
2404
2405 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2406                                 unsigned int freq)
2407 {
2408         struct wpa_supplicant *wpa_s = ctx;
2409         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2410                                  freq);
2411 }
2412
2413
2414 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2415                                          const u8 *peer, const char *params,
2416                                          unsigned int generated_pin)
2417 {
2418         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2419                        " %08d%s", MAC2STR(peer), generated_pin, params);
2420 }
2421
2422
2423 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2424                                         const u8 *peer, const char *params)
2425 {
2426         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2427                        "%s", MAC2STR(peer), params);
2428 }
2429
2430
2431 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2432                                const u8 *dev_addr, const u8 *pri_dev_type,
2433                                const char *dev_name, u16 supp_config_methods,
2434                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2435                                size_t group_id_len)
2436 {
2437         struct wpa_supplicant *wpa_s = ctx;
2438         char devtype[WPS_DEV_TYPE_BUFSIZE];
2439         char params[300];
2440         u8 empty_dev_type[8];
2441         unsigned int generated_pin = 0;
2442         struct wpa_supplicant *group = NULL;
2443         int res;
2444
2445         if (group_id) {
2446                 for (group = wpa_s->global->ifaces; group; group = group->next)
2447                 {
2448                         struct wpa_ssid *s = group->current_ssid;
2449                         if (s != NULL &&
2450                             s->mode == WPAS_MODE_P2P_GO &&
2451                             group_id_len - ETH_ALEN == s->ssid_len &&
2452                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2453                                       s->ssid_len) == 0)
2454                                 break;
2455                 }
2456         }
2457
2458         if (pri_dev_type == NULL) {
2459                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2460                 pri_dev_type = empty_dev_type;
2461         }
2462         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2463                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2464                           "dev_capab=0x%x group_capab=0x%x%s%s",
2465                           MAC2STR(dev_addr),
2466                           wps_dev_type_bin2str(pri_dev_type, devtype,
2467                                                sizeof(devtype)),
2468                           dev_name, supp_config_methods, dev_capab, group_capab,
2469                           group ? " group=" : "",
2470                           group ? group->ifname : "");
2471         if (os_snprintf_error(sizeof(params), res))
2472                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2473         params[sizeof(params) - 1] = '\0';
2474
2475         if (config_methods & WPS_CONFIG_DISPLAY) {
2476                 generated_pin = wps_generate_pin();
2477                 wpas_prov_disc_local_display(wpa_s, peer, params,
2478                                              generated_pin);
2479         } else if (config_methods & WPS_CONFIG_KEYPAD)
2480                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2481         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2482                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2483                                MACSTR "%s", MAC2STR(peer), params);
2484
2485         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2486                                             P2P_PROV_DISC_SUCCESS,
2487                                             config_methods, generated_pin);
2488 }
2489
2490
2491 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2492 {
2493         struct wpa_supplicant *wpa_s = ctx;
2494         unsigned int generated_pin = 0;
2495         char params[20];
2496
2497         if (wpa_s->pending_pd_before_join &&
2498             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2499              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2500                 wpa_s->pending_pd_before_join = 0;
2501                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2502                            "join-existing-group operation");
2503                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2504                 return;
2505         }
2506
2507         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2508             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2509                 int res;
2510
2511                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2512                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2513                 if (os_snprintf_error(sizeof(params), res))
2514                         params[sizeof(params) - 1] = '\0';
2515         } else
2516                 params[0] = '\0';
2517
2518         if (config_methods & WPS_CONFIG_DISPLAY)
2519                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2520         else if (config_methods & WPS_CONFIG_KEYPAD) {
2521                 generated_pin = wps_generate_pin();
2522                 wpas_prov_disc_local_display(wpa_s, peer, params,
2523                                              generated_pin);
2524         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2525                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2526                                MACSTR "%s", MAC2STR(peer), params);
2527
2528         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2529                                             P2P_PROV_DISC_SUCCESS,
2530                                             config_methods, generated_pin);
2531 }
2532
2533
2534 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2535                                 enum p2p_prov_disc_status status,
2536                                 u32 adv_id, const u8 *adv_mac,
2537                                 const char *deferred_session_resp)
2538 {
2539         struct wpa_supplicant *wpa_s = ctx;
2540
2541         if (wpa_s->p2p_fallback_to_go_neg) {
2542                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2543                         "failed - fall back to GO Negotiation");
2544                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2545                                P2P_EVENT_FALLBACK_TO_GO_NEG
2546                                "reason=PD-failed");
2547                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2548                 return;
2549         }
2550
2551         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2552                 wpa_s->pending_pd_before_join = 0;
2553                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2554                            "join-existing-group operation (no ACK for PD "
2555                            "Req attempts)");
2556                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2557                 return;
2558         }
2559
2560         if (adv_id && adv_mac && deferred_session_resp) {
2561                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2562                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2563                                " deferred_session_resp='%s'",
2564                                MAC2STR(peer), status, adv_id,
2565                                deferred_session_resp);
2566         } else if (adv_id && adv_mac) {
2567                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2568                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2569                                MAC2STR(peer), status, adv_id);
2570         } else {
2571                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2572                                " p2p_dev_addr=" MACSTR " status=%d",
2573                                MAC2STR(peer), status);
2574         }
2575
2576         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2577                                             status, 0, 0);
2578 }
2579
2580
2581 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2582 {
2583         if (channels == NULL)
2584                 return 1; /* Assume no restrictions */
2585         return p2p_channels_includes_freq(channels, freq);
2586
2587 }
2588
2589
2590 /**
2591  * Pick the best frequency to use from all the currently used frequencies.
2592  */
2593 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2594                                         struct wpa_used_freq_data *freqs,
2595                                         unsigned int num)
2596 {
2597         unsigned int i, c;
2598
2599         /* find a candidate freq that is supported by P2P */
2600         for (c = 0; c < num; c++)
2601                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2602                         break;
2603
2604         if (c == num)
2605                 return 0;
2606
2607         /* once we have a candidate, try to find a 'better' one */
2608         for (i = c + 1; i < num; i++) {
2609                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2610                         continue;
2611
2612                 /*
2613                  * 1. Infrastructure station interfaces have higher preference.
2614                  * 2. P2P Clients have higher preference.
2615                  * 3. All others.
2616                  */
2617                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2618                         c = i;
2619                         break;
2620                 }
2621
2622                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2623                         c = i;
2624         }
2625         return freqs[c].freq;
2626 }
2627
2628
2629 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2630                                   const u8 *go_dev_addr, const u8 *ssid,
2631                                   size_t ssid_len, int *go, u8 *group_bssid,
2632                                   int *force_freq, int persistent_group,
2633                                   const struct p2p_channels *channels,
2634                                   int dev_pw_id)
2635 {
2636         struct wpa_supplicant *wpa_s = ctx;
2637         struct wpa_ssid *s;
2638         struct wpa_used_freq_data *freqs;
2639         struct wpa_supplicant *grp;
2640         int best_freq;
2641
2642         if (!persistent_group) {
2643                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2644                            " to join an active group (SSID: %s)",
2645                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2646                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2647                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2648                      == 0 ||
2649                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2650                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2651                                    "authorized invitation");
2652                         goto accept_inv;
2653                 }
2654
2655 #ifdef CONFIG_WPS_NFC
2656                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2657                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2658                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2659                         wpa_s->p2p_wps_method = WPS_NFC;
2660                         wpa_s->pending_join_wps_method = WPS_NFC;
2661                         os_memcpy(wpa_s->pending_join_dev_addr,
2662                                   go_dev_addr, ETH_ALEN);
2663                         os_memcpy(wpa_s->pending_join_iface_addr,
2664                                   bssid, ETH_ALEN);
2665                         goto accept_inv;
2666                 }
2667 #endif /* CONFIG_WPS_NFC */
2668
2669                 /*
2670                  * Do not accept the invitation automatically; notify user and
2671                  * request approval.
2672                  */
2673                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2674         }
2675
2676         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2677         if (grp) {
2678                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2679                            "running persistent group");
2680                 if (*go)
2681                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2682                 goto accept_inv;
2683         }
2684
2685         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2686             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2687                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2688                            "invitation to re-invoke a persistent group");
2689                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2690         } else if (!wpa_s->conf->persistent_reconnect)
2691                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2692
2693         for (s = wpa_s->conf->ssid; s; s = s->next) {
2694                 if (s->disabled == 2 &&
2695                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2696                     s->ssid_len == ssid_len &&
2697                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2698                         break;
2699         }
2700
2701         if (!s) {
2702                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2703                            " requested reinvocation of an unknown group",
2704                            MAC2STR(sa));
2705                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2706         }
2707
2708         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2709                 *go = 1;
2710                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2711                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2712                                    "interface is already in use - reject "
2713                                    "invitation");
2714                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2715                 }
2716                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2717         } else if (s->mode == WPAS_MODE_P2P_GO) {
2718                 *go = 1;
2719                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2720                 {
2721                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2722                                    "interface address for the group");
2723                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2724                 }
2725                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2726                           ETH_ALEN);
2727         }
2728
2729 accept_inv:
2730         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2731
2732         best_freq = 0;
2733         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2734                           sizeof(struct wpa_used_freq_data));
2735         if (freqs) {
2736                 int num_channels = wpa_s->num_multichan_concurrent;
2737                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2738                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2739                 os_free(freqs);
2740         }
2741
2742         /* Get one of the frequencies currently in use */
2743         if (best_freq > 0) {
2744                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2745                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2746
2747                 if (wpa_s->num_multichan_concurrent < 2 ||
2748                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2749                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2750                         *force_freq = best_freq;
2751                 }
2752         }
2753
2754         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2755             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2756                 if (*go == 0) {
2757                         /* We are the client */
2758                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2759                                    "running a GO but we are capable of MCC, "
2760                                    "figure out the best channel to use");
2761                         *force_freq = 0;
2762                 } else if (!freq_included(channels, *force_freq)) {
2763                         /* We are the GO, and *force_freq is not in the
2764                          * intersection */
2765                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2766                                    "in intersection but we are capable of MCC, "
2767                                    "figure out the best channel to use",
2768                                    *force_freq);
2769                         *force_freq = 0;
2770                 }
2771         }
2772
2773         return P2P_SC_SUCCESS;
2774 }
2775
2776
2777 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2778                                      const u8 *ssid, size_t ssid_len,
2779                                      const u8 *go_dev_addr, u8 status,
2780                                      int op_freq)
2781 {
2782         struct wpa_supplicant *wpa_s = ctx;
2783         struct wpa_ssid *s;
2784
2785         for (s = wpa_s->conf->ssid; s; s = s->next) {
2786                 if (s->disabled == 2 &&
2787                     s->ssid_len == ssid_len &&
2788                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2789                         break;
2790         }
2791
2792         if (status == P2P_SC_SUCCESS) {
2793                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2794                            " was accepted; op_freq=%d MHz, SSID=%s",
2795                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2796                 if (s) {
2797                         int go = s->mode == WPAS_MODE_P2P_GO;
2798                         wpas_p2p_group_add_persistent(
2799                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2800                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2801                 } else if (bssid) {
2802                         wpa_s->user_initiated_pd = 0;
2803                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2804                                       wpa_s->p2p_wps_method, 0, op_freq,
2805                                       ssid, ssid_len);
2806                 }
2807                 return;
2808         }
2809
2810         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2811                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2812                            " was rejected (status %u)", MAC2STR(sa), status);
2813                 return;
2814         }
2815
2816         if (!s) {
2817                 if (bssid) {
2818                         wpa_msg_global(wpa_s, MSG_INFO,
2819                                        P2P_EVENT_INVITATION_RECEIVED
2820                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2821                                        " bssid=" MACSTR " unknown-network",
2822                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2823                                        MAC2STR(bssid));
2824                 } else {
2825                         wpa_msg_global(wpa_s, MSG_INFO,
2826                                        P2P_EVENT_INVITATION_RECEIVED
2827                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2828                                        " unknown-network",
2829                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2830                 }
2831                 return;
2832         }
2833
2834         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2835                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2836                                "sa=" MACSTR " persistent=%d freq=%d",
2837                                MAC2STR(sa), s->id, op_freq);
2838         } else {
2839                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2840                                "sa=" MACSTR " persistent=%d",
2841                                MAC2STR(sa), s->id);
2842         }
2843 }
2844
2845
2846 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2847                                         struct wpa_ssid *ssid,
2848                                         const u8 *peer, int inv)
2849 {
2850         size_t i;
2851         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2852
2853         if (ssid == NULL)
2854                 return;
2855
2856         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2857                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2858                               ETH_ALEN) == 0)
2859                         break;
2860         }
2861         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2862                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2863                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2864                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2865                                    "due to invitation result", ssid->id);
2866                         wpas_notify_network_removed(wpa_s, ssid);
2867                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2868                         return;
2869                 }
2870                 return; /* Peer not found in client list */
2871         }
2872
2873         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2874                    "group %d client list%s",
2875                    MAC2STR(peer), ssid->id,
2876                    inv ? " due to invitation result" : "");
2877         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2878                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2879                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2880         ssid->num_p2p_clients--;
2881         if (p2p_wpa_s->conf->update_config &&
2882             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2883                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2884 }
2885
2886
2887 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2888                                           const u8 *peer)
2889 {
2890         struct wpa_ssid *ssid;
2891
2892         wpa_s = wpa_s->global->p2p_invite_group;
2893         if (wpa_s == NULL)
2894                 return; /* No known invitation group */
2895         ssid = wpa_s->current_ssid;
2896         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2897             !ssid->p2p_persistent_group)
2898                 return; /* Not operating as a GO in persistent group */
2899         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2900                                        ssid->ssid, ssid->ssid_len);
2901         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2902 }
2903
2904
2905 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2906                                    const struct p2p_channels *channels,
2907                                    const u8 *peer, int neg_freq,
2908                                    int peer_oper_freq)
2909 {
2910         struct wpa_supplicant *wpa_s = ctx;
2911         struct wpa_ssid *ssid;
2912         int freq;
2913
2914         if (bssid) {
2915                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2916                                "status=%d " MACSTR,
2917                                status, MAC2STR(bssid));
2918         } else {
2919                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2920                                "status=%d ", status);
2921         }
2922         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2923
2924         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2925                    status, MAC2STR(peer));
2926         if (wpa_s->pending_invite_ssid_id == -1) {
2927                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2928                         wpas_remove_persistent_client(wpa_s, peer);
2929                 return; /* Invitation to active group */
2930         }
2931
2932         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2933                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2934                            "invitation exchange to indicate readiness for "
2935                            "re-invocation");
2936         }
2937
2938         if (status != P2P_SC_SUCCESS) {
2939                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2940                         ssid = wpa_config_get_network(
2941                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2942                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2943                 }
2944                 wpas_p2p_remove_pending_group_interface(wpa_s);
2945                 return;
2946         }
2947
2948         ssid = wpa_config_get_network(wpa_s->conf,
2949                                       wpa_s->pending_invite_ssid_id);
2950         if (ssid == NULL) {
2951                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2952                            "data matching with invitation");
2953                 return;
2954         }
2955
2956         /*
2957          * The peer could have missed our ctrl::ack frame for Invitation
2958          * Response and continue retransmitting the frame. To reduce the
2959          * likelihood of the peer not getting successful TX status for the
2960          * Invitation Response frame, wait a short time here before starting
2961          * the persistent group so that we will remain on the current channel to
2962          * acknowledge any possible retransmission from the peer.
2963          */
2964         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2965                 "starting persistent group");
2966         os_sleep(0, 50000);
2967
2968         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2969             freq_included(channels, neg_freq))
2970                 freq = neg_freq;
2971         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2972                  freq_included(channels, peer_oper_freq))
2973                 freq = peer_oper_freq;
2974         else
2975                 freq = 0;
2976
2977         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2978                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2979         wpas_p2p_group_add_persistent(wpa_s, ssid,
2980                                       ssid->mode == WPAS_MODE_P2P_GO,
2981                                       wpa_s->p2p_persistent_go_freq,
2982                                       freq,
2983                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2984                                       channels,
2985                                       ssid->mode == WPAS_MODE_P2P_GO ?
2986                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2987                                       0);
2988 }
2989
2990
2991 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2992                                     unsigned int freq)
2993 {
2994         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2995                 return 1;
2996         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2997 }
2998
2999
3000 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3001 {
3002         reg->channel[reg->channels] = chan;
3003         reg->channels++;
3004 }
3005
3006
3007 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3008                                      struct p2p_channels *chan,
3009                                      struct p2p_channels *cli_chan)
3010 {
3011         int i, cla = 0;
3012
3013         wpa_s->global->p2p_24ghz_social_channels = 1;
3014
3015         os_memset(cli_chan, 0, sizeof(*cli_chan));
3016
3017         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3018                    "band");
3019
3020         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3021         chan->reg_class[cla].reg_class = 81;
3022         chan->reg_class[cla].channels = 0;
3023         for (i = 0; i < 11; i++) {
3024                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3025                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3026         }
3027         if (chan->reg_class[cla].channels)
3028                 cla++;
3029
3030         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3031                    "band");
3032
3033         /* Operating class 115 - 5 GHz, channels 36-48 */
3034         chan->reg_class[cla].reg_class = 115;
3035         chan->reg_class[cla].channels = 0;
3036         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3037                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3038         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3039                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3040         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3041                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3042         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3043                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3044         if (chan->reg_class[cla].channels)
3045                 cla++;
3046
3047         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3048                    "band");
3049
3050         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3051         chan->reg_class[cla].reg_class = 124;
3052         chan->reg_class[cla].channels = 0;
3053         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3054                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3055         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3056                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3057         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3058                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3059         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3060                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3061         if (chan->reg_class[cla].channels)
3062                 cla++;
3063
3064         chan->reg_classes = cla;
3065         return 0;
3066 }
3067
3068
3069 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3070                                           u16 num_modes,
3071                                           enum hostapd_hw_mode mode)
3072 {
3073         u16 i;
3074
3075         for (i = 0; i < num_modes; i++) {
3076                 if (modes[i].mode == mode)
3077                         return &modes[i];
3078         }
3079
3080         return NULL;
3081 }
3082
3083
3084 enum chan_allowed {
3085         NOT_ALLOWED, NO_IR, ALLOWED
3086 };
3087
3088 static int has_channel(struct wpa_global *global,
3089                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3090 {
3091         int i;
3092         unsigned int freq;
3093
3094         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3095                 chan * 5;
3096         if (wpas_p2p_disallowed_freq(global, freq))
3097                 return NOT_ALLOWED;
3098
3099         for (i = 0; i < mode->num_channels; i++) {
3100                 if (mode->channels[i].chan == chan) {
3101                         if (flags)
3102                                 *flags = mode->channels[i].flag;
3103                         if (mode->channels[i].flag &
3104                             (HOSTAPD_CHAN_DISABLED |
3105                              HOSTAPD_CHAN_RADAR))
3106                                 return NOT_ALLOWED;
3107                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3108                                 return NO_IR;
3109                         return ALLOWED;
3110                 }
3111         }
3112
3113         return NOT_ALLOWED;
3114 }
3115
3116
3117 struct p2p_oper_class_map {
3118         enum hostapd_hw_mode mode;
3119         u8 op_class;
3120         u8 min_chan;
3121         u8 max_chan;
3122         u8 inc;
3123         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3124 };
3125
3126 static const struct p2p_oper_class_map op_class[] = {
3127         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3128 #if 0 /* Do not enable HT40 on 2 GHz for now */
3129         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3130         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3131 #endif
3132         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3133         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3134         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3135         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3136         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3137         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3138         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3139
3140         /*
3141          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3142          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3143          * 80 MHz, but currently use the following definition for simplicity
3144          * (these center frequencies are not actual channels, which makes
3145          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3146          * removing invalid channels.
3147          */
3148         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3149         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3150         { -1, 0, 0, 0, 0, BW20 }
3151 };
3152
3153
3154 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3155                                      struct hostapd_hw_modes *mode,
3156                                      u8 channel)
3157 {
3158         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3159         unsigned int i;
3160
3161         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3162                 return 0;
3163
3164         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3165                 /*
3166                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3167                  * so the center channel is 6 channels away from the start/end.
3168                  */
3169                 if (channel >= center_channels[i] - 6 &&
3170                     channel <= center_channels[i] + 6)
3171                         return center_channels[i];
3172
3173         return 0;
3174 }
3175
3176
3177 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3178                                                struct hostapd_hw_modes *mode,
3179                                                u8 channel, u8 bw)
3180 {
3181         u8 center_chan;
3182         int i, flags;
3183         enum chan_allowed res, ret = ALLOWED;
3184
3185         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3186         if (!center_chan)
3187                 return NOT_ALLOWED;
3188         if (center_chan >= 58 && center_chan <= 138)
3189                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3190
3191         /* check all the channels are available */
3192         for (i = 0; i < 4; i++) {
3193                 int adj_chan = center_chan - 6 + i * 4;
3194
3195                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3196                 if (res == NOT_ALLOWED)
3197                         return NOT_ALLOWED;
3198                 if (res == NO_IR)
3199                         ret = NO_IR;
3200
3201                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3202                         return NOT_ALLOWED;
3203                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3204                         return NOT_ALLOWED;
3205                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3206                         return NOT_ALLOWED;
3207                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3208                         return NOT_ALLOWED;
3209         }
3210
3211         return ret;
3212 }
3213
3214
3215 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3216                                                  struct hostapd_hw_modes *mode,
3217                                                  u8 channel, u8 bw)
3218 {
3219         int flag = 0;
3220         enum chan_allowed res, res2;
3221
3222         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3223         if (bw == BW40MINUS) {
3224                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3225                         return NOT_ALLOWED;
3226                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3227         } else if (bw == BW40PLUS) {
3228                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3229                         return NOT_ALLOWED;
3230                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3231         } else if (bw == BW80) {
3232                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3233         }
3234
3235         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3236                 return NOT_ALLOWED;
3237         if (res == NO_IR || res2 == NO_IR)
3238                 return NO_IR;
3239         return res;
3240 }
3241
3242
3243 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3244                                    struct p2p_channels *chan,
3245                                    struct p2p_channels *cli_chan)
3246 {
3247         struct hostapd_hw_modes *mode;
3248         int cla, op, cli_cla;
3249
3250         if (wpa_s->hw.modes == NULL) {
3251                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3252                            "of all supported channels; assume dualband "
3253                            "support");
3254                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3255         }
3256
3257         cla = cli_cla = 0;
3258
3259         for (op = 0; op_class[op].op_class; op++) {
3260                 const struct p2p_oper_class_map *o = &op_class[op];
3261                 u8 ch;
3262                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3263
3264                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3265                 if (mode == NULL)
3266                         continue;
3267                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3268                         wpa_s->global->p2p_24ghz_social_channels = 1;
3269                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3270                         enum chan_allowed res;
3271                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3272                         if (res == ALLOWED) {
3273                                 if (reg == NULL) {
3274                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3275                                                    o->op_class);
3276                                         reg = &chan->reg_class[cla];
3277                                         cla++;
3278                                         reg->reg_class = o->op_class;
3279                                 }
3280                                 reg->channel[reg->channels] = ch;
3281                                 reg->channels++;
3282                         } else if (res == NO_IR &&
3283                                    wpa_s->conf->p2p_add_cli_chan) {
3284                                 if (cli_reg == NULL) {
3285                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3286                                                    o->op_class);
3287                                         cli_reg = &cli_chan->reg_class[cli_cla];
3288                                         cli_cla++;
3289                                         cli_reg->reg_class = o->op_class;
3290                                 }
3291                                 cli_reg->channel[cli_reg->channels] = ch;
3292                                 cli_reg->channels++;
3293                         }
3294                 }
3295                 if (reg) {
3296                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3297                                     reg->channel, reg->channels);
3298                 }
3299                 if (cli_reg) {
3300                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3301                                     cli_reg->channel, cli_reg->channels);
3302                 }
3303         }
3304
3305         chan->reg_classes = cla;
3306         cli_chan->reg_classes = cli_cla;
3307
3308         return 0;
3309 }
3310
3311
3312 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3313                            struct hostapd_hw_modes *mode, u8 channel)
3314 {
3315         int op;
3316         enum chan_allowed ret;
3317
3318         for (op = 0; op_class[op].op_class; op++) {
3319                 const struct p2p_oper_class_map *o = &op_class[op];
3320                 u8 ch;
3321
3322                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3323                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3324                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3325                             ch != channel)
3326                                 continue;
3327                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3328                         if (ret == ALLOWED)
3329                                 return (o->bw == BW40MINUS) ? -1 : 1;
3330                 }
3331         }
3332         return 0;
3333 }
3334
3335
3336 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3337                               struct hostapd_hw_modes *mode, u8 channel)
3338 {
3339         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3340                 return 0;
3341
3342         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3343 }
3344
3345
3346 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3347                         size_t buf_len)
3348 {
3349         struct wpa_supplicant *wpa_s = ctx;
3350
3351         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3352                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3353                         break;
3354         }
3355         if (wpa_s == NULL)
3356                 return -1;
3357
3358         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3359 }
3360
3361
3362 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3363                                               const u8 *ssid, size_t ssid_len)
3364 {
3365         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3366                 struct wpa_ssid *s = wpa_s->current_ssid;
3367                 if (s == NULL)
3368                         continue;
3369                 if (s->mode != WPAS_MODE_P2P_GO &&
3370                     s->mode != WPAS_MODE_AP &&
3371                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3372                         continue;
3373                 if (s->ssid_len != ssid_len ||
3374                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3375                         continue;
3376                 return wpa_s;
3377         }
3378
3379         return NULL;
3380
3381 }
3382
3383
3384 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3385                                                   const u8 *peer_dev_addr)
3386 {
3387         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3388                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3389                 if (ssid == NULL)
3390                         continue;
3391                 if (ssid->mode != WPAS_MODE_INFRA)
3392                         continue;
3393                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3394                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3395                         continue;
3396                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3397                         return wpa_s;
3398         }
3399
3400         return NULL;
3401 }
3402
3403
3404 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3405 {
3406         struct wpa_supplicant *wpa_s = ctx;
3407
3408         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3409 }
3410
3411
3412 static int wpas_is_concurrent_session_active(void *ctx)
3413 {
3414         struct wpa_supplicant *wpa_s = ctx;
3415         struct wpa_supplicant *ifs;
3416
3417         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3418                 if (ifs == wpa_s)
3419                         continue;
3420                 if (ifs->wpa_state > WPA_ASSOCIATED)
3421                         return 1;
3422         }
3423         return 0;
3424 }
3425
3426
3427 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3428 {
3429         struct wpa_supplicant *wpa_s = ctx;
3430         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3431 }
3432
3433
3434 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3435                                   const char *conf_p2p_dev)
3436 {
3437         struct wpa_interface iface;
3438         struct wpa_supplicant *p2pdev_wpa_s;
3439         char ifname[100];
3440         char force_name[100];
3441         int ret;
3442
3443         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3444                           wpa_s->ifname);
3445         if (os_snprintf_error(sizeof(ifname), ret))
3446                 return -1;
3447         force_name[0] = '\0';
3448         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3449         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3450                              force_name, wpa_s->pending_interface_addr, NULL);
3451         if (ret < 0) {
3452                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3453                 return ret;
3454         }
3455         os_strlcpy(wpa_s->pending_interface_name, ifname,
3456                    sizeof(wpa_s->pending_interface_name));
3457
3458         os_memset(&iface, 0, sizeof(iface));
3459         iface.p2p_mgmt = 1;
3460         iface.ifname = wpa_s->pending_interface_name;
3461         iface.driver = wpa_s->driver->name;
3462         iface.driver_param = wpa_s->conf->driver_param;
3463
3464         /*
3465          * If a P2P Device configuration file was given, use it as the interface
3466          * configuration file (instead of using parent's configuration file.
3467          */
3468         if (conf_p2p_dev) {
3469                 iface.confname = conf_p2p_dev;
3470                 iface.ctrl_interface = NULL;
3471         } else {
3472                 iface.confname = wpa_s->confname;
3473                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3474         }
3475
3476         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3477         if (!p2pdev_wpa_s) {
3478                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3479                 return -1;
3480         }
3481
3482         wpa_s->pending_interface_name[0] = '\0';
3483         return 0;
3484 }
3485
3486
3487 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3488                                const u8 *noa, size_t noa_len)
3489 {
3490         struct wpa_supplicant *wpa_s, *intf = ctx;
3491         char hex[100];
3492
3493         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3494                 if (wpa_s->waiting_presence_resp)
3495                         break;
3496         }
3497         if (!wpa_s) {
3498                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3499                 return;
3500         }
3501         wpa_s->waiting_presence_resp = 0;
3502
3503         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3504         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3505                 " status=%u noa=%s", MAC2STR(src), status, hex);
3506 }
3507
3508
3509 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3510                                      size_t ssid_len, u8 *go_dev_addr,
3511                                      u8 *ret_ssid, size_t *ret_ssid_len)
3512 {
3513         struct wpa_supplicant *wpa_s = ctx;
3514         struct wpa_ssid *s;
3515
3516         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3517         if (s) {
3518                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3519                 *ret_ssid_len = s->ssid_len;
3520                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3521                 return 1;
3522         }
3523
3524         return 0;
3525 }
3526
3527
3528 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3529                             u8 *ssid, size_t *ssid_len, int *group_iface)
3530 {
3531         struct wpa_supplicant *wpa_s = ctx;
3532         struct wpa_ssid *s;
3533         u8 bssid[ETH_ALEN];
3534
3535         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3536         if (!s) {
3537                 s = wpas_p2p_get_persistent_go(wpa_s);
3538                 if (s)
3539                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3540         }
3541
3542         *group_iface = wpas_p2p_create_iface(wpa_s);
3543         if (!s)
3544                 return 0;
3545
3546         os_memcpy(intended_addr, bssid, ETH_ALEN);
3547         os_memcpy(ssid, s->ssid, s->ssid_len);
3548         *ssid_len = s->ssid_len;
3549
3550         return 1;
3551 }
3552
3553
3554 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3555                                     const u8 *ssid, size_t ssid_len)
3556 {
3557         struct wpa_supplicant *wpa_s = ctx;
3558         struct wpa_ssid *s;
3559         int save_config = 0;
3560         size_t i;
3561
3562         /* Start with our first choice of Persistent Groups */
3563         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3564                 if (go && ssid && ssid_len &&
3565                     s->ssid_len == ssid_len &&
3566                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3567                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3568                         break;
3569
3570                 /* Remove stale persistent group */
3571                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3572                         wpa_config_remove_network(wpa_s->conf, s->id);
3573                         save_config = 1;
3574                         continue;
3575                 }
3576
3577                 for (i = 0; i < s->num_p2p_clients; i++) {
3578                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3579                                       peer, ETH_ALEN) != 0)
3580                                 continue;
3581
3582                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3583                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3584                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3585                         break;
3586                 }
3587                 s->num_p2p_clients--;
3588                 save_config = 1;
3589         }
3590
3591         if (save_config)
3592                 p2p_config_write(wpa_s);
3593
3594         /* Return TRUE if valid SSID remains */
3595         return s != NULL;
3596 }
3597
3598
3599 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3600                                     const u8 *adv_mac, const u8 *ses_mac,
3601                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3602                                     u8 conncap, int passwd_id,
3603                                     const u8 *persist_ssid,
3604                                     size_t persist_ssid_size, int response_done,
3605                                     int prov_start, const char *session_info)
3606 {
3607         struct wpa_supplicant *wpa_s = ctx;
3608         u8 mac[ETH_ALEN];
3609         struct wpa_ssid *persistent_go, *stale, *s;
3610         int save_config = 0;
3611         struct wpa_supplicant *go_wpa_s;
3612
3613         if (!dev)
3614                 return;
3615
3616         os_memset(mac, 0, ETH_ALEN);
3617         if (!adv_mac)
3618                 adv_mac = mac;
3619         if (!ses_mac)
3620                 ses_mac = mac;
3621         if (!grp_mac)
3622                 grp_mac = mac;
3623
3624         if (prov_start) {
3625                 if (session_info == NULL) {
3626                         wpa_msg_global(wpa_s, MSG_INFO,
3627                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3628                                        " adv_id=%x conncap=%x"
3629                                        " adv_mac=" MACSTR
3630                                        " session=%x mac=" MACSTR
3631                                        " dev_passwd_id=%d",
3632                                        MAC2STR(dev), adv_id, conncap,
3633                                        MAC2STR(adv_mac),
3634                                        ses_id, MAC2STR(ses_mac),
3635                                        passwd_id);
3636                 } else {
3637                         wpa_msg_global(wpa_s, MSG_INFO,
3638                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3639                                        " adv_id=%x conncap=%x"
3640                                        " adv_mac=" MACSTR
3641                                        " session=%x mac=" MACSTR
3642                                        " dev_passwd_id=%d info='%s'",
3643                                        MAC2STR(dev), adv_id, conncap,
3644                                        MAC2STR(adv_mac),
3645                                        ses_id, MAC2STR(ses_mac),
3646                                        passwd_id, session_info);
3647                 }
3648                 return;
3649         }
3650
3651         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3652         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3653
3654         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3655                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3656                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3657
3658                 if (persistent_go && !persistent_go->num_p2p_clients) {
3659                         /* remove empty persistent GO */
3660                         wpa_config_remove_network(wpa_s->conf,
3661                                                   persistent_go->id);
3662                 }
3663
3664                 wpa_msg_global(wpa_s, MSG_INFO,
3665                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3666                                " status=%d"
3667                                " adv_id=%x adv_mac=" MACSTR
3668                                " session=%x mac=" MACSTR,
3669                                MAC2STR(dev), status,
3670                                adv_id, MAC2STR(adv_mac),
3671                                ses_id, MAC2STR(ses_mac));
3672                 return;
3673         }
3674
3675         /* Clean up stale persistent groups with this device */
3676         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3677                                     persist_ssid_size);
3678         for (;;) {
3679                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3680                 if (!stale)
3681                         break;
3682
3683                 if (s && s->ssid_len == stale->ssid_len &&
3684                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3685                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3686                         break;
3687
3688                 /* Remove stale persistent group */
3689                 if (stale->mode != WPAS_MODE_P2P_GO ||
3690                     stale->num_p2p_clients <= 1) {
3691                         wpa_config_remove_network(wpa_s->conf, stale->id);
3692                 } else {
3693                         size_t i;
3694
3695                         for (i = 0; i < stale->num_p2p_clients; i++) {
3696                                 if (os_memcmp(stale->p2p_client_list +
3697                                               i * ETH_ALEN,
3698                                               dev, ETH_ALEN) == 0) {
3699                                         os_memmove(stale->p2p_client_list +
3700                                                    i * ETH_ALEN,
3701                                                    stale->p2p_client_list +
3702                                                    (i + 1) * ETH_ALEN,
3703                                                    (stale->num_p2p_clients -
3704                                                     i - 1) * ETH_ALEN);
3705                                         break;
3706                                 }
3707                         }
3708                         stale->num_p2p_clients--;
3709                 }
3710                 save_config = 1;
3711         }
3712
3713         if (save_config)
3714                 p2p_config_write(wpa_s);
3715
3716         if (s) {
3717                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3718                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3719
3720                 if (persistent_go && s != persistent_go &&
3721                     !persistent_go->num_p2p_clients) {
3722                         /* remove empty persistent GO */
3723                         wpa_config_remove_network(wpa_s->conf,
3724                                                   persistent_go->id);
3725                         /* Save config */
3726                 }
3727
3728                 wpa_msg_global(wpa_s, MSG_INFO,
3729                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3730                                " status=%d"
3731                                " adv_id=%x adv_mac=" MACSTR
3732                                " session=%x mac=" MACSTR
3733                                " persist=%d",
3734                                MAC2STR(dev), status,
3735                                adv_id, MAC2STR(adv_mac),
3736                                ses_id, MAC2STR(ses_mac), s->id);
3737                 return;
3738         }
3739
3740         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3741                 /*
3742                  * We need to copy the interface name. Simply saving a
3743                  * pointer isn't enough, since if we use pending_interface_name
3744                  * it will be overwritten when the group is added.
3745                  */
3746                 char go_ifname[100];
3747
3748                 go_ifname[0] = '\0';
3749                 if (!go_wpa_s) {
3750                         wpa_s->global->pending_p2ps_group = 1;
3751
3752                         if (!wpas_p2p_create_iface(wpa_s))
3753                                 os_memcpy(go_ifname, wpa_s->ifname,
3754                                           sizeof(go_ifname));
3755                         else if (wpa_s->pending_interface_name[0])
3756                                 os_memcpy(go_ifname,
3757                                           wpa_s->pending_interface_name,
3758                                           sizeof(go_ifname));
3759
3760                         if (!go_ifname[0]) {
3761                                 wpas_p2ps_prov_complete(
3762                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3763                                         dev, adv_mac, ses_mac,
3764                                         NULL, adv_id, ses_id, 0, 0,
3765                                         NULL, 0, 0, 0, NULL);
3766                                 return;
3767                         }
3768
3769                         /* If PD Resp complete, start up the GO */
3770                         if (response_done && persistent_go) {
3771                                 wpas_p2p_group_add_persistent(
3772                                         wpa_s, persistent_go,
3773                                         0, 0, 0, 0, 0, NULL,
3774                                         persistent_go->mode ==
3775                                         WPAS_MODE_P2P_GO ?
3776                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3777                                         0);
3778                         } else if (response_done) {
3779                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3780                         }
3781
3782                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3783                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3784                                 wpa_s->p2ps_join_addr_valid = 1;
3785                                 wpa_dbg(wpa_s, MSG_DEBUG,
3786                                         "P2PS: Saving PIN for " MACSTR,
3787                                         MAC2STR(dev));
3788                         }
3789                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3790                         os_memcpy(go_ifname, go_wpa_s->ifname,
3791                                   sizeof(go_ifname));
3792
3793                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3794                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3795                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3796                                                   NULL, 0, 0);
3797
3798                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3799                         wpa_s->p2ps_join_addr_valid = 1;
3800                         wpa_dbg(wpa_s, MSG_DEBUG,
3801                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3802                 }
3803
3804                 wpa_msg_global(wpa_s, MSG_INFO,
3805                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3806                                " status=%d conncap=%x"
3807                                " adv_id=%x adv_mac=" MACSTR
3808                                " session=%x mac=" MACSTR
3809                                " dev_passwd_id=%d go=%s",
3810                                MAC2STR(dev), status, conncap,
3811                                adv_id, MAC2STR(adv_mac),
3812                                ses_id, MAC2STR(ses_mac),
3813                                passwd_id, go_ifname);
3814                 return;
3815         }
3816
3817         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3818                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3819
3820         if (persistent_go && !persistent_go->num_p2p_clients) {
3821                 /* remove empty persistent GO */
3822                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3823         }
3824
3825         if (conncap == P2PS_SETUP_CLIENT) {
3826                 wpa_msg_global(wpa_s, MSG_INFO,
3827                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3828                                " status=%d conncap=%x"
3829                                " adv_id=%x adv_mac=" MACSTR
3830                                " session=%x mac=" MACSTR
3831                                " dev_passwd_id=%d join=" MACSTR,
3832                                MAC2STR(dev), status, conncap,
3833                                adv_id, MAC2STR(adv_mac),
3834                                ses_id, MAC2STR(ses_mac),
3835                                passwd_id, MAC2STR(grp_mac));
3836         } else {
3837                 wpa_msg_global(wpa_s, MSG_INFO,
3838                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3839                                " status=%d conncap=%x"
3840                                " adv_id=%x adv_mac=" MACSTR
3841                                " session=%x mac=" MACSTR
3842                                " dev_passwd_id=%d",
3843                                MAC2STR(dev), status, conncap,
3844                                adv_id, MAC2STR(adv_mac),
3845                                ses_id, MAC2STR(ses_mac),
3846                                passwd_id);
3847         }
3848 }
3849
3850
3851 static int _wpas_p2p_in_progress(void *ctx)
3852 {
3853         struct wpa_supplicant *wpa_s = ctx;
3854         return wpas_p2p_in_progress(wpa_s);
3855 }
3856
3857
3858 static int wpas_prov_disc_resp_cb(void *ctx)
3859 {
3860         struct wpa_supplicant *wpa_s = ctx;
3861         struct wpa_ssid *persistent_go;
3862
3863         if (!wpa_s->global->pending_p2ps_group)
3864                 return 0;
3865
3866         wpa_s->global->pending_p2ps_group = 0;
3867
3868         if (wpas_p2p_get_go_group(wpa_s))
3869                 return 0;
3870         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3871
3872         if (persistent_go) {
3873                 wpas_p2p_group_add_persistent(
3874                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3875                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3876                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3877         } else {
3878                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3879         }
3880
3881         return 1;
3882 }
3883
3884
3885 /**
3886  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3887  * @global: Pointer to global data from wpa_supplicant_init()
3888  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3889  * Returns: 0 on success, -1 on failure
3890  */
3891 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3892 {
3893         struct p2p_config p2p;
3894         int i;
3895
3896         if (wpa_s->conf->p2p_disabled)
3897                 return 0;
3898
3899         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3900                 return 0;
3901
3902         if (global->p2p)
3903                 return 0;
3904
3905         os_memset(&p2p, 0, sizeof(p2p));
3906         p2p.cb_ctx = wpa_s;
3907         p2p.debug_print = wpas_p2p_debug_print;
3908         p2p.p2p_scan = wpas_p2p_scan;
3909         p2p.send_action = wpas_send_action;
3910         p2p.send_action_done = wpas_send_action_done;
3911         p2p.go_neg_completed = wpas_go_neg_completed;
3912         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3913         p2p.dev_found = wpas_dev_found;
3914         p2p.dev_lost = wpas_dev_lost;
3915         p2p.find_stopped = wpas_find_stopped;
3916         p2p.start_listen = wpas_start_listen;
3917         p2p.stop_listen = wpas_stop_listen;
3918         p2p.send_probe_resp = wpas_send_probe_resp;
3919         p2p.sd_request = wpas_sd_request;
3920         p2p.sd_response = wpas_sd_response;
3921         p2p.prov_disc_req = wpas_prov_disc_req;
3922         p2p.prov_disc_resp = wpas_prov_disc_resp;
3923         p2p.prov_disc_fail = wpas_prov_disc_fail;
3924         p2p.invitation_process = wpas_invitation_process;
3925         p2p.invitation_received = wpas_invitation_received;
3926         p2p.invitation_result = wpas_invitation_result;
3927         p2p.get_noa = wpas_get_noa;
3928         p2p.go_connected = wpas_go_connected;
3929         p2p.presence_resp = wpas_presence_resp;
3930         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3931         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3932         p2p.get_persistent_group = wpas_get_persistent_group;
3933         p2p.get_go_info = wpas_get_go_info;
3934         p2p.remove_stale_groups = wpas_remove_stale_groups;
3935         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3936         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3937         p2p.p2ps_group_capability = p2ps_group_capability;
3938
3939         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3940         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3941         p2p.dev_name = wpa_s->conf->device_name;
3942         p2p.manufacturer = wpa_s->conf->manufacturer;
3943         p2p.model_name = wpa_s->conf->model_name;
3944         p2p.model_number = wpa_s->conf->model_number;
3945         p2p.serial_number = wpa_s->conf->serial_number;
3946         if (wpa_s->wps) {
3947                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3948                 p2p.config_methods = wpa_s->wps->config_methods;
3949         }
3950
3951         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3952                 wpa_printf(MSG_ERROR,
3953                            "P2P: Failed to configure supported channel list");
3954                 return -1;
3955         }
3956
3957         if (wpa_s->conf->p2p_listen_reg_class &&
3958             wpa_s->conf->p2p_listen_channel) {
3959                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3960                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3961                 p2p.channel_forced = 1;
3962         } else {
3963                 /*
3964                  * Pick one of the social channels randomly as the listen
3965                  * channel.
3966                  */
3967                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
3968                                                  &p2p.channel) != 0) {
3969                         wpa_printf(MSG_INFO,
3970                                    "P2P: No social channels supported by the driver - do not enable P2P");
3971                         return 0;
3972                 }
3973                 p2p.channel_forced = 0;
3974         }
3975         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
3976                    p2p.reg_class, p2p.channel);
3977
3978         if (wpa_s->conf->p2p_oper_reg_class &&
3979             wpa_s->conf->p2p_oper_channel) {
3980                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3981                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3982                 p2p.cfg_op_channel = 1;
3983                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3984                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3985
3986         } else {
3987                 /*
3988                  * Use random operation channel from 2.4 GHz band social
3989                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
3990                  * other preference is indicated.
3991                  */
3992                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
3993                                                  &p2p.op_channel) != 0) {
3994                         wpa_printf(MSG_ERROR,
3995                                    "P2P: Failed to select random social channel as operation channel");
3996                         return -1;
3997                 }
3998                 p2p.cfg_op_channel = 0;
3999                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4000                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4001         }
4002
4003         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4004                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4005                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4006         }
4007
4008         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4009                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4010                 p2p.country[2] = 0x04;
4011         } else
4012                 os_memcpy(p2p.country, "XX\x04", 3);
4013
4014         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4015                   WPS_DEV_TYPE_LEN);
4016
4017         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4018         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4019                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4020
4021         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4022                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4023
4024         p2p.max_peers = 100;
4025
4026         if (wpa_s->conf->p2p_ssid_postfix) {
4027                 p2p.ssid_postfix_len =
4028                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4029                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4030                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4031                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4032                           p2p.ssid_postfix_len);
4033         }
4034
4035         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4036
4037         p2p.max_listen = wpa_s->max_remain_on_chan;
4038
4039         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4040             wpa_s->conf->p2p_passphrase_len <= 63)
4041                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4042         else
4043                 p2p.passphrase_len = 8;
4044
4045         global->p2p = p2p_init(&p2p);
4046         if (global->p2p == NULL)
4047                 return -1;
4048         global->p2p_init_wpa_s = wpa_s;
4049
4050         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4051                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4052                         continue;
4053                 p2p_add_wps_vendor_extension(
4054                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4055         }
4056
4057         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4058
4059         return 0;
4060 }
4061
4062
4063 /**
4064  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4065  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4066  *
4067  * This function deinitialize per-interface P2P data.
4068  */
4069 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4070 {
4071         if (wpa_s->driver && wpa_s->drv_priv)
4072                 wpa_drv_probe_req_report(wpa_s, 0);
4073
4074         if (wpa_s->go_params) {
4075                 /* Clear any stored provisioning info */
4076                 p2p_clear_provisioning_info(
4077                         wpa_s->global->p2p,
4078                         wpa_s->go_params->peer_device_addr);
4079         }
4080
4081         os_free(wpa_s->go_params);
4082         wpa_s->go_params = NULL;
4083         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4084         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4085         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4086         wpa_s->p2p_long_listen = 0;
4087         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4088         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4089         wpas_p2p_remove_pending_group_interface(wpa_s);
4090         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4091         wpas_p2p_listen_work_done(wpa_s);
4092         if (wpa_s->p2p_send_action_work) {
4093                 os_free(wpa_s->p2p_send_action_work->ctx);
4094                 radio_work_done(wpa_s->p2p_send_action_work);
4095                 wpa_s->p2p_send_action_work = NULL;
4096         }
4097         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4098
4099         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4100         wpa_s->p2p_oob_dev_pw = NULL;
4101
4102         os_free(wpa_s->p2p_group_common_freqs);
4103         wpa_s->p2p_group_common_freqs = NULL;
4104         wpa_s->p2p_group_common_freqs_num = 0;
4105
4106         /* TODO: remove group interface from the driver if this wpa_s instance
4107          * is on top of a P2P group interface */
4108 }
4109
4110
4111 /**
4112  * wpas_p2p_deinit_global - Deinitialize global P2P module
4113  * @global: Pointer to global data from wpa_supplicant_init()
4114  *
4115  * This function deinitializes the global (per device) P2P module.
4116  */
4117 static void wpas_p2p_deinit_global(struct wpa_global *global)
4118 {
4119         struct wpa_supplicant *wpa_s, *tmp;
4120
4121         wpa_s = global->ifaces;
4122
4123         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4124
4125         /* Remove remaining P2P group interfaces */
4126         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4127                 wpa_s = wpa_s->next;
4128         while (wpa_s) {
4129                 tmp = global->ifaces;
4130                 while (tmp &&
4131                        (tmp == wpa_s ||
4132                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4133                         tmp = tmp->next;
4134                 }
4135                 if (tmp == NULL)
4136                         break;
4137                 /* Disconnect from the P2P group and deinit the interface */
4138                 wpas_p2p_disconnect(tmp);
4139         }
4140
4141         /*
4142          * Deinit GO data on any possibly remaining interface (if main
4143          * interface is used as GO).
4144          */
4145         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4146                 if (wpa_s->ap_iface)
4147                         wpas_p2p_group_deinit(wpa_s);
4148         }
4149
4150         p2p_deinit(global->p2p);
4151         global->p2p = NULL;
4152         global->p2p_init_wpa_s = NULL;
4153 }
4154
4155
4156 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4157 {
4158         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4159             wpa_s->conf->p2p_no_group_iface)
4160                 return 0; /* separate interface disabled per configuration */
4161         if (wpa_s->drv_flags &
4162             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4163              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4164                 return 1; /* P2P group requires a new interface in every case
4165                            */
4166         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4167                 return 0; /* driver does not support concurrent operations */
4168         if (wpa_s->global->ifaces->next)
4169                 return 1; /* more that one interface already in use */
4170         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4171                 return 1; /* this interface is already in use */
4172         return 0;
4173 }
4174
4175
4176 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4177                                  const u8 *peer_addr,
4178                                  enum p2p_wps_method wps_method,
4179                                  int go_intent, const u8 *own_interface_addr,
4180                                  unsigned int force_freq, int persistent_group,
4181                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4182 {
4183         if (persistent_group && wpa_s->conf->persistent_reconnect)
4184                 persistent_group = 2;
4185
4186         /*
4187          * Increase GO config timeout if HT40 is used since it takes some time
4188          * to scan channels for coex purposes before the BSS can be started.
4189          */
4190         p2p_set_config_timeout(wpa_s->global->p2p,
4191                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4192
4193         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4194                            go_intent, own_interface_addr, force_freq,
4195                            persistent_group, ssid ? ssid->ssid : NULL,
4196                            ssid ? ssid->ssid_len : 0,
4197                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4198                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4199                            0);
4200 }
4201
4202
4203 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4204                                 const u8 *peer_addr,
4205                                 enum p2p_wps_method wps_method,
4206                                 int go_intent, const u8 *own_interface_addr,
4207                                 unsigned int force_freq, int persistent_group,
4208                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4209 {
4210         if (persistent_group && wpa_s->conf->persistent_reconnect)
4211                 persistent_group = 2;
4212
4213         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4214                              go_intent, own_interface_addr, force_freq,
4215                              persistent_group, ssid ? ssid->ssid : NULL,
4216                              ssid ? ssid->ssid_len : 0, pref_freq,
4217                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4218                              0);
4219 }
4220
4221
4222 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4223 {
4224         wpa_s->p2p_join_scan_count++;
4225         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4226                    wpa_s->p2p_join_scan_count);
4227         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4228                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4229                            " for join operationg - stop join attempt",
4230                            MAC2STR(wpa_s->pending_join_iface_addr));
4231                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4232                 if (wpa_s->p2p_auto_pd) {
4233                         wpa_s->p2p_auto_pd = 0;
4234                         wpa_msg_global(wpa_s, MSG_INFO,
4235                                        P2P_EVENT_PROV_DISC_FAILURE
4236                                        " p2p_dev_addr=" MACSTR " status=N/A",
4237                                        MAC2STR(wpa_s->pending_join_dev_addr));
4238                         return;
4239                 }
4240                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4241                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4242         }
4243 }
4244
4245
4246 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4247 {
4248         int res;
4249         unsigned int num, i;
4250         struct wpa_used_freq_data *freqs;
4251
4252         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4253                 /* Multiple channels are supported and not all are in use */
4254                 return 0;
4255         }
4256
4257         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4258                           sizeof(struct wpa_used_freq_data));
4259         if (!freqs)
4260                 return 1;
4261
4262         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4263                                         wpa_s->num_multichan_concurrent);
4264
4265         for (i = 0; i < num; i++) {
4266                 if (freqs[i].freq == freq) {
4267                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4268                                    freq);
4269                         res = 0;
4270                         goto exit_free;
4271                 }
4272         }
4273
4274         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4275         res = 1;
4276
4277 exit_free:
4278         os_free(freqs);
4279         return res;
4280 }
4281
4282
4283 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4284                             const u8 *peer_dev_addr)
4285 {
4286         struct wpa_bss *bss;
4287         int updated;
4288
4289         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4290         if (bss == NULL)
4291                 return -1;
4292         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4293                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4294                            "last scan");
4295                 return 0;
4296         }
4297
4298         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4299                                     &bss->last_update);
4300         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4301                    "%ld.%06ld (%supdated in last scan)",
4302                    bss->last_update.sec, bss->last_update.usec,
4303                    updated ? "": "not ");
4304
4305         return updated;
4306 }
4307
4308
4309 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4310                                    struct wpa_scan_results *scan_res)
4311 {
4312         struct wpa_bss *bss = NULL;
4313         int freq;
4314         u8 iface_addr[ETH_ALEN];
4315
4316         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4317
4318         if (wpa_s->global->p2p_disabled)
4319                 return;
4320
4321         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4322                    scan_res ? (int) scan_res->num : -1,
4323                    wpa_s->p2p_auto_join ? "auto_" : "");
4324
4325         if (scan_res)
4326                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4327
4328         if (wpa_s->p2p_auto_pd) {
4329                 int join = wpas_p2p_peer_go(wpa_s,
4330                                             wpa_s->pending_join_dev_addr);
4331                 if (join == 0 &&
4332                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4333                         wpa_s->auto_pd_scan_retry++;
4334                         bss = wpa_bss_get_bssid_latest(
4335                                 wpa_s, wpa_s->pending_join_dev_addr);
4336                         if (bss) {
4337                                 freq = bss->freq;
4338                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4339                                            "the peer " MACSTR " at %d MHz",
4340                                            wpa_s->auto_pd_scan_retry,
4341                                            MAC2STR(wpa_s->
4342                                                    pending_join_dev_addr),
4343                                            freq);
4344                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4345                                 return;
4346                         }
4347                 }
4348
4349                 if (join < 0)
4350                         join = 0;
4351
4352                 wpa_s->p2p_auto_pd = 0;
4353                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4354                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4355                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4356                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4357                                       wpa_s->pending_join_dev_addr, NULL,
4358                                       wpa_s->pending_pd_config_methods, join,
4359                                       0, wpa_s->user_initiated_pd) < 0) {
4360                         wpa_s->p2p_auto_pd = 0;
4361                         wpa_msg_global(wpa_s, MSG_INFO,
4362                                        P2P_EVENT_PROV_DISC_FAILURE
4363                                        " p2p_dev_addr=" MACSTR " status=N/A",
4364                                        MAC2STR(wpa_s->pending_join_dev_addr));
4365                 }
4366                 return;
4367         }
4368
4369         if (wpa_s->p2p_auto_join) {
4370                 int join = wpas_p2p_peer_go(wpa_s,
4371                                             wpa_s->pending_join_dev_addr);
4372                 if (join < 0) {
4373                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4374                                    "running a GO -> use GO Negotiation");
4375                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4376                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4377                                        "reason=peer-not-running-GO");
4378                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4379                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4380                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4381                                          wpa_s->p2p_go_intent,
4382                                          wpa_s->p2p_connect_freq,
4383                                          wpa_s->p2p_persistent_id,
4384                                          wpa_s->p2p_pd_before_go_neg,
4385                                          wpa_s->p2p_go_ht40,
4386                                          wpa_s->p2p_go_vht);
4387                         return;
4388                 }
4389
4390                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4391                            "try to join the group", join ? "" :
4392                            " in older scan");
4393                 if (!join) {
4394                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4395                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4396                         wpa_s->p2p_fallback_to_go_neg = 1;
4397                 }
4398         }
4399
4400         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4401                                  wpa_s->pending_join_iface_addr);
4402         if (freq < 0 &&
4403             p2p_get_interface_addr(wpa_s->global->p2p,
4404                                    wpa_s->pending_join_dev_addr,
4405                                    iface_addr) == 0 &&
4406             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4407             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4408                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4409                            "address for join from " MACSTR " to " MACSTR
4410                            " based on newly discovered P2P peer entry",
4411                            MAC2STR(wpa_s->pending_join_iface_addr),
4412                            MAC2STR(iface_addr));
4413                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4414                           ETH_ALEN);
4415
4416                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4417                                          wpa_s->pending_join_iface_addr);
4418         }
4419         if (freq >= 0) {
4420                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4421                            "from P2P peer table: %d MHz", freq);
4422         }
4423         if (wpa_s->p2p_join_ssid_len) {
4424                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4425                            MACSTR " and SSID %s",
4426                            MAC2STR(wpa_s->pending_join_iface_addr),
4427                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4428                                         wpa_s->p2p_join_ssid_len));
4429                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4430                                   wpa_s->p2p_join_ssid,
4431                                   wpa_s->p2p_join_ssid_len);
4432         }
4433         if (!bss) {
4434                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4435                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4436                 bss = wpa_bss_get_bssid_latest(wpa_s,
4437                                                wpa_s->pending_join_iface_addr);
4438         }
4439         if (bss) {
4440                 u8 dev_addr[ETH_ALEN];
4441
4442                 freq = bss->freq;
4443                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4444                            "from BSS table: %d MHz (SSID %s)", freq,
4445                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4446                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4447                                        dev_addr) == 0 &&
4448                     os_memcmp(wpa_s->pending_join_dev_addr,
4449                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4450                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4451                               ETH_ALEN) != 0) {
4452                         wpa_printf(MSG_DEBUG,
4453                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4454                                    MAC2STR(dev_addr),
4455                                    MAC2STR(wpa_s->pending_join_dev_addr));
4456                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4457                                   ETH_ALEN);
4458                 }
4459         }
4460         if (freq > 0) {
4461                 u16 method;
4462
4463                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4464                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4465                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4466                                        "reason=FREQ_CONFLICT");
4467                         return;
4468                 }
4469
4470                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4471                            "prior to joining an existing group (GO " MACSTR
4472                            " freq=%u MHz)",
4473                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4474                 wpa_s->pending_pd_before_join = 1;
4475
4476                 switch (wpa_s->pending_join_wps_method) {
4477                 case WPS_PIN_DISPLAY:
4478                         method = WPS_CONFIG_KEYPAD;
4479                         break;
4480                 case WPS_PIN_KEYPAD:
4481                         method = WPS_CONFIG_DISPLAY;
4482                         break;
4483                 case WPS_PBC:
4484                         method = WPS_CONFIG_PUSHBUTTON;
4485                         break;
4486                 default:
4487                         method = 0;
4488                         break;
4489                 }
4490
4491                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4492                                                wpa_s->pending_join_dev_addr) ==
4493                      method)) {
4494                         /*
4495                          * We have already performed provision discovery for
4496                          * joining the group. Proceed directly to join
4497                          * operation without duplicated provision discovery. */
4498                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4499                                    "with " MACSTR " already done - proceed to "
4500                                    "join",
4501                                    MAC2STR(wpa_s->pending_join_dev_addr));
4502                         wpa_s->pending_pd_before_join = 0;
4503                         goto start;
4504                 }
4505
4506                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4507                                       wpa_s->pending_join_dev_addr,
4508                                       NULL, method, 1,
4509                                       freq, wpa_s->user_initiated_pd) < 0) {
4510                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4511                                    "Discovery Request before joining an "
4512                                    "existing group");
4513                         wpa_s->pending_pd_before_join = 0;
4514                         goto start;
4515                 }
4516                 return;
4517         }
4518
4519         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4520         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4521         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4522         wpas_p2p_check_join_scan_limit(wpa_s);
4523         return;
4524
4525 start:
4526         /* Start join operation immediately */
4527         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4528 }
4529
4530
4531 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4532                                    const u8 *ssid, size_t ssid_len)
4533 {
4534         int ret;
4535         struct wpa_driver_scan_params params;
4536         struct wpabuf *wps_ie, *ies;
4537         size_t ielen;
4538         int freqs[2] = { 0, 0 };
4539
4540         os_memset(&params, 0, sizeof(params));
4541
4542         /* P2P Wildcard SSID */
4543         params.num_ssids = 1;
4544         if (ssid && ssid_len) {
4545                 params.ssids[0].ssid = ssid;
4546                 params.ssids[0].ssid_len = ssid_len;
4547                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4548                 wpa_s->p2p_join_ssid_len = ssid_len;
4549         } else {
4550                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4551                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4552                 wpa_s->p2p_join_ssid_len = 0;
4553         }
4554
4555         wpa_s->wps->dev.p2p = 1;
4556         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4557                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4558                                         NULL);
4559         if (wps_ie == NULL) {
4560                 wpas_p2p_scan_res_join(wpa_s, NULL);
4561                 return;
4562         }
4563
4564         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4565         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4566         if (ies == NULL) {
4567                 wpabuf_free(wps_ie);
4568                 wpas_p2p_scan_res_join(wpa_s, NULL);
4569                 return;
4570         }
4571         wpabuf_put_buf(ies, wps_ie);
4572         wpabuf_free(wps_ie);
4573
4574         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4575
4576         params.p2p_probe = 1;
4577         params.extra_ies = wpabuf_head(ies);
4578         params.extra_ies_len = wpabuf_len(ies);
4579
4580         if (!freq) {
4581                 int oper_freq;
4582                 /*
4583                  * If freq is not provided, check the operating freq of the GO
4584                  * and use a single channel scan on if possible.
4585                  */
4586                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4587                                               wpa_s->pending_join_iface_addr);
4588                 if (oper_freq > 0)
4589                         freq = oper_freq;
4590         }
4591         if (freq > 0) {
4592                 freqs[0] = freq;
4593                 params.freqs = freqs;
4594         }
4595
4596         /*
4597          * Run a scan to update BSS table and start Provision Discovery once
4598          * the new scan results become available.
4599          */
4600         ret = wpa_drv_scan(wpa_s, &params);
4601         if (!ret) {
4602                 os_get_reltime(&wpa_s->scan_trigger_time);
4603                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4604                 wpa_s->own_scan_requested = 1;
4605         }
4606
4607         wpabuf_free(ies);
4608
4609         if (ret) {
4610                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4611                            "try again later");
4612                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4613                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4614                 wpas_p2p_check_join_scan_limit(wpa_s);
4615         }
4616 }
4617
4618
4619 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4620 {
4621         struct wpa_supplicant *wpa_s = eloop_ctx;
4622         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4623 }
4624
4625
4626 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4627                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4628                          int auto_join, int op_freq,
4629                          const u8 *ssid, size_t ssid_len)
4630 {
4631         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4632                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4633                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4634                    auto_join ? " (auto_join)" : "");
4635         if (ssid && ssid_len) {
4636                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4637                            wpa_ssid_txt(ssid, ssid_len));
4638         }
4639
4640         wpa_s->p2p_auto_pd = 0;
4641         wpa_s->p2p_auto_join = !!auto_join;
4642         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4643         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4644         wpa_s->pending_join_wps_method = wps_method;
4645
4646         /* Make sure we are not running find during connection establishment */
4647         wpas_p2p_stop_find(wpa_s);
4648
4649         wpa_s->p2p_join_scan_count = 0;
4650         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4651         return 0;
4652 }
4653
4654
4655 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4656                                const u8 *ssid, size_t ssid_len)
4657 {
4658         struct wpa_supplicant *group;
4659         struct p2p_go_neg_results res;
4660         struct wpa_bss *bss;
4661
4662         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4663         if (group == NULL)
4664                 return -1;
4665         if (group != wpa_s) {
4666                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4667                           sizeof(group->p2p_pin));
4668                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4669         } else {
4670                 /*
4671                  * Need to mark the current interface for p2p_group_formation
4672                  * when a separate group interface is not used. This is needed
4673                  * to allow p2p_cancel stop a pending p2p_connect-join.
4674                  * wpas_p2p_init_group_interface() addresses this for the case
4675                  * where a separate group interface is used.
4676                  */
4677                 wpa_s->global->p2p_group_formation = wpa_s;
4678         }
4679
4680         group->p2p_in_provisioning = 1;
4681         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4682
4683         os_memset(&res, 0, sizeof(res));
4684         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4685         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4686                   ETH_ALEN);
4687         res.wps_method = wpa_s->pending_join_wps_method;
4688         if (freq && ssid && ssid_len) {
4689                 res.freq = freq;
4690                 res.ssid_len = ssid_len;
4691                 os_memcpy(res.ssid, ssid, ssid_len);
4692         } else {
4693                 bss = wpa_bss_get_bssid_latest(wpa_s,
4694                                                wpa_s->pending_join_iface_addr);
4695                 if (bss) {
4696                         res.freq = bss->freq;
4697                         res.ssid_len = bss->ssid_len;
4698                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4699                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4700                                    bss->freq,
4701                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4702                 }
4703         }
4704
4705         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4706                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4707                            "starting client");
4708                 wpa_drv_cancel_remain_on_channel(wpa_s);
4709                 wpa_s->off_channel_freq = 0;
4710                 wpa_s->roc_waiting_drv_freq = 0;
4711         }
4712         wpas_start_wps_enrollee(group, &res);
4713
4714         /*
4715          * Allow a longer timeout for join-a-running-group than normal 15
4716          * second group formation timeout since the GO may not have authorized
4717          * our connection yet.
4718          */
4719         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4720         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4721                                wpa_s, NULL);
4722
4723         return 0;
4724 }
4725
4726
4727 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4728                                 int *force_freq, int *pref_freq, int go)
4729 {
4730         struct wpa_used_freq_data *freqs;
4731         int res, best_freq, num_unused;
4732         unsigned int freq_in_use = 0, num, i;
4733
4734         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4735                           sizeof(struct wpa_used_freq_data));
4736         if (!freqs)
4737                 return -1;
4738
4739         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4740                                         wpa_s->num_multichan_concurrent);
4741
4742         /*
4743          * It is possible that the total number of used frequencies is bigger
4744          * than the number of frequencies used for P2P, so get the system wide
4745          * number of unused frequencies.
4746          */
4747         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4748
4749         wpa_printf(MSG_DEBUG,
4750                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4751                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4752
4753         if (freq > 0) {
4754                 int ret;
4755                 if (go)
4756                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4757                 else
4758                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4759                 if (!ret) {
4760                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4761                             ieee80211_is_dfs(freq)) {
4762                                 /*
4763                                  * If freq is a DFS channel and DFS is offloaded
4764                                  * to the driver, allow P2P GO to use it.
4765                                  */
4766                                 wpa_printf(MSG_DEBUG,
4767                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4768                                            freq);
4769                         } else {
4770                                 wpa_printf(MSG_DEBUG,
4771                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4772                                            freq);
4773                                 res = -3;
4774                                 goto exit_free;
4775                         }
4776                 }
4777
4778                 for (i = 0; i < num; i++) {
4779                         if (freqs[i].freq == freq)
4780                                 freq_in_use = 1;
4781                 }
4782
4783                 if (num_unused <= 0 && !freq_in_use) {
4784                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4785                                    freq);
4786                         res = -2;
4787                         goto exit_free;
4788                 }
4789                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4790                            "requested channel (%u MHz)", freq);
4791                 *force_freq = freq;
4792                 goto exit_ok;
4793         }
4794
4795         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4796
4797         /* We have a candidate frequency to use */
4798         if (best_freq > 0) {
4799                 if (*pref_freq == 0 && num_unused > 0) {
4800                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4801                                    best_freq);
4802                         *pref_freq = best_freq;
4803                 } else {
4804                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4805                                    best_freq);
4806                         *force_freq = best_freq;
4807                 }
4808         } else if (num_unused > 0) {
4809                 wpa_printf(MSG_DEBUG,
4810                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4811                 *force_freq = 0;
4812         } else {
4813                 wpa_printf(MSG_DEBUG,
4814                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4815                 res = -2;
4816                 goto exit_free;
4817         }
4818
4819 exit_ok:
4820         res = 0;
4821 exit_free:
4822         os_free(freqs);
4823         return res;
4824 }
4825
4826
4827 /**
4828  * wpas_p2p_connect - Request P2P Group Formation to be started
4829  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4830  * @peer_addr: Address of the peer P2P Device
4831  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4832  * @persistent_group: Whether to create a persistent group
4833  * @auto_join: Whether to select join vs. GO Negotiation automatically
4834  * @join: Whether to join an existing group (as a client) instead of starting
4835  *      Group Owner negotiation; @peer_addr is BSSID in that case
4836  * @auth: Whether to only authorize the connection instead of doing that and
4837  *      initiating Group Owner negotiation
4838  * @go_intent: GO Intent or -1 to use default
4839  * @freq: Frequency for the group or 0 for auto-selection
4840  * @persistent_id: Persistent group credentials to use for forcing GO
4841  *      parameters or -1 to generate new values (SSID/passphrase)
4842  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4843  *      interoperability workaround when initiating group formation
4844  * @ht40: Start GO with 40 MHz channel width
4845  * @vht:  Start GO with VHT support
4846  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4847  *      failure, -2 on failure due to channel not currently available,
4848  *      -3 if forced channel is not supported
4849  */
4850 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4851                      const char *pin, enum p2p_wps_method wps_method,
4852                      int persistent_group, int auto_join, int join, int auth,
4853                      int go_intent, int freq, int persistent_id, int pd,
4854                      int ht40, int vht)
4855 {
4856         int force_freq = 0, pref_freq = 0;
4857         int ret = 0, res;
4858         enum wpa_driver_if_type iftype;
4859         const u8 *if_addr;
4860         struct wpa_ssid *ssid = NULL;
4861
4862         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4863                 return -1;
4864
4865         if (persistent_id >= 0) {
4866                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4867                 if (ssid == NULL || ssid->disabled != 2 ||
4868                     ssid->mode != WPAS_MODE_P2P_GO)
4869                         return -1;
4870         }
4871
4872         os_free(wpa_s->global->add_psk);
4873         wpa_s->global->add_psk = NULL;
4874
4875         wpa_s->global->p2p_fail_on_wps_complete = 0;
4876         wpa_s->global->pending_p2ps_group = 0;
4877
4878         if (go_intent < 0)
4879                 go_intent = wpa_s->conf->p2p_go_intent;
4880
4881         if (!auth)
4882                 wpa_s->p2p_long_listen = 0;
4883
4884         wpa_s->p2p_wps_method = wps_method;
4885         wpa_s->p2p_persistent_group = !!persistent_group;
4886         wpa_s->p2p_persistent_id = persistent_id;
4887         wpa_s->p2p_go_intent = go_intent;
4888         wpa_s->p2p_connect_freq = freq;
4889         wpa_s->p2p_fallback_to_go_neg = 0;
4890         wpa_s->p2p_pd_before_go_neg = !!pd;
4891         wpa_s->p2p_go_ht40 = !!ht40;
4892         wpa_s->p2p_go_vht = !!vht;
4893
4894         if (pin)
4895                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4896         else if (wps_method == WPS_PIN_DISPLAY) {
4897                 ret = wps_generate_pin();
4898                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4899                                   "%08d", ret);
4900                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4901                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4902                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4903                            wpa_s->p2p_pin);
4904         } else
4905                 wpa_s->p2p_pin[0] = '\0';
4906
4907         if (join || auto_join) {
4908                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4909                 if (auth) {
4910                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4911                                    "connect a running group from " MACSTR,
4912                                    MAC2STR(peer_addr));
4913                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4914                         return ret;
4915                 }
4916                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4917                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4918                                            iface_addr) < 0) {
4919                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4920                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4921                                          dev_addr);
4922                 }
4923                 if (auto_join) {
4924                         os_get_reltime(&wpa_s->p2p_auto_started);
4925                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4926                                    "%ld.%06ld",
4927                                    wpa_s->p2p_auto_started.sec,
4928                                    wpa_s->p2p_auto_started.usec);
4929                 }
4930                 wpa_s->user_initiated_pd = 1;
4931                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4932                                   auto_join, freq, NULL, 0) < 0)
4933                         return -1;
4934                 return ret;
4935         }
4936
4937         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4938                                    go_intent == 15);
4939         if (res)
4940                 return res;
4941         wpas_p2p_set_own_freq_preference(wpa_s,
4942                                          force_freq ? force_freq : pref_freq);
4943
4944         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4945
4946         if (wpa_s->create_p2p_iface) {
4947                 /* Prepare to add a new interface for the group */
4948                 iftype = WPA_IF_P2P_GROUP;
4949                 if (go_intent == 15)
4950                         iftype = WPA_IF_P2P_GO;
4951                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4952                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4953                                    "interface for the group");
4954                         return -1;
4955                 }
4956
4957                 if_addr = wpa_s->pending_interface_addr;
4958         } else
4959                 if_addr = wpa_s->own_addr;
4960
4961         if (auth) {
4962                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4963                                          go_intent, if_addr,
4964                                          force_freq, persistent_group, ssid,
4965                                          pref_freq) < 0)
4966                         return -1;
4967                 return ret;
4968         }
4969
4970         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4971                                   go_intent, if_addr, force_freq,
4972                                   persistent_group, ssid, pref_freq) < 0) {
4973                 if (wpa_s->create_p2p_iface)
4974                         wpas_p2p_remove_pending_group_interface(wpa_s);
4975                 return -1;
4976         }
4977         return ret;
4978 }
4979
4980
4981 /**
4982  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4983  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4984  * @freq: Frequency of the channel in MHz
4985  * @duration: Duration of the stay on the channel in milliseconds
4986  *
4987  * This callback is called when the driver indicates that it has started the
4988  * requested remain-on-channel duration.
4989  */
4990 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4991                                    unsigned int freq, unsigned int duration)
4992 {
4993         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4994                 return;
4995         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)",
4996                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4997                    wpa_s->roc_waiting_drv_freq, freq, duration);
4998         if (wpa_s->off_channel_freq &&
4999             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5000                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5001                               wpa_s->pending_listen_duration);
5002                 wpa_s->pending_listen_freq = 0;
5003         } else {
5004                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5005                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5006                            freq, duration);
5007         }
5008 }
5009
5010
5011 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5012 {
5013         /* Limit maximum Listen state time based on driver limitation. */
5014         if (timeout > wpa_s->max_remain_on_chan)
5015                 timeout = wpa_s->max_remain_on_chan;
5016
5017         return p2p_listen(wpa_s->global->p2p, timeout);
5018 }
5019
5020
5021 /**
5022  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5023  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5024  * @freq: Frequency of the channel in MHz
5025  *
5026  * This callback is called when the driver indicates that a remain-on-channel
5027  * operation has been completed, i.e., the duration on the requested channel
5028  * has timed out.
5029  */
5030 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5031                                           unsigned int freq)
5032 {
5033         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5034                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5035                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5036         wpas_p2p_listen_work_done(wpa_s);
5037         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5038                 return;
5039         if (wpa_s->p2p_long_listen > 0)
5040                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5041         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5042                 return; /* P2P module started a new operation */
5043         if (offchannel_pending_action_tx(wpa_s))
5044                 return;
5045         if (wpa_s->p2p_long_listen > 0) {
5046                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5047                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5048         } else {
5049                 /*
5050                  * When listen duration is over, stop listen & update p2p_state
5051                  * to IDLE.
5052                  */
5053                 p2p_stop_listen(wpa_s->global->p2p);
5054         }
5055 }
5056
5057
5058 /**
5059  * wpas_p2p_group_remove - Remove a P2P group
5060  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5061  * @ifname: Network interface name of the group interface or "*" to remove all
5062  *      groups
5063  * Returns: 0 on success, -1 on failure
5064  *
5065  * This function is used to remove a P2P group. This can be used to disconnect
5066  * from a group in which the local end is a P2P Client or to end a P2P Group in
5067  * case the local end is the Group Owner. If a virtual network interface was
5068  * created for this group, that interface will be removed. Otherwise, only the
5069  * configured P2P group network will be removed from the interface.
5070  */
5071 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5072 {
5073         struct wpa_global *global = wpa_s->global;
5074         struct wpa_supplicant *calling_wpa_s = wpa_s;
5075
5076         if (os_strcmp(ifname, "*") == 0) {
5077                 struct wpa_supplicant *prev;
5078                 wpa_s = global->ifaces;
5079                 while (wpa_s) {
5080                         prev = wpa_s;
5081                         wpa_s = wpa_s->next;
5082                         if (prev->p2p_group_interface !=
5083                             NOT_P2P_GROUP_INTERFACE ||
5084                             (prev->current_ssid &&
5085                              prev->current_ssid->p2p_group))
5086                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5087                 }
5088                 return 0;
5089         }
5090
5091         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5092                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5093                         break;
5094         }
5095
5096         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5097 }
5098
5099
5100 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5101 {
5102         unsigned int r;
5103
5104         if (freq == 2) {
5105                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5106                            "band");
5107                 if (wpa_s->best_24_freq > 0 &&
5108                     p2p_supported_freq_go(wpa_s->global->p2p,
5109                                           wpa_s->best_24_freq)) {
5110                         freq = wpa_s->best_24_freq;
5111                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5112                                    "channel: %d MHz", freq);
5113                 } else {
5114                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5115                                 return -1;
5116                         freq = 2412 + (r % 3) * 25;
5117                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5118                                    "channel: %d MHz", freq);
5119                 }
5120         }
5121
5122         if (freq == 5) {
5123                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5124                            "band");
5125                 if (wpa_s->best_5_freq > 0 &&
5126                     p2p_supported_freq_go(wpa_s->global->p2p,
5127                                        wpa_s->best_5_freq)) {
5128                         freq = wpa_s->best_5_freq;
5129                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5130                                    "channel: %d MHz", freq);
5131                 } else {
5132                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5133                                 return -1;
5134                         freq = 5180 + (r % 4) * 20;
5135                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5136                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5137                                            "5 GHz channel for P2P group");
5138                                 return -1;
5139                         }
5140                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5141                                    "channel: %d MHz", freq);
5142                 }
5143         }
5144
5145         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5146                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5147                     ieee80211_is_dfs(freq)) {
5148                         /*
5149                          * If freq is a DFS channel and DFS is offloaded to the
5150                          * driver, allow P2P GO to use it.
5151                          */
5152                         wpa_printf(MSG_DEBUG, "P2P: "
5153                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5154                                    __func__, freq);
5155                         return freq;
5156                 }
5157                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5158                            "(%u MHz) is not supported for P2P uses",
5159                            freq);
5160                 return -1;
5161         }
5162
5163         return freq;
5164 }
5165
5166
5167 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5168                                         struct p2p_go_neg_results *params,
5169                                         const struct p2p_channels *channels)
5170 {
5171         unsigned int i, r;
5172
5173         /* first try some random selection of the social channels */
5174         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5175                 return -1;
5176
5177         for (i = 0; i < 3; i++) {
5178                 params->freq = 2412 + ((r + i) % 3) * 25;
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         /* try all channels in reg. class 81 */
5186         for (i = 0; i < 11; i++) {
5187                 params->freq = 2412 + i * 5;
5188                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5189                     freq_included(channels, params->freq) &&
5190                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5191                         goto out;
5192         }
5193
5194         /* try all channels in operating class 115 */
5195         for (i = 0; i < 4; i++) {
5196                 params->freq = 5180 + i * 20;
5197                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5198                     freq_included(channels, params->freq) &&
5199                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5200                         goto out;
5201         }
5202
5203         /* try all channels in operating class 124 */
5204         for (i = 0; i < 4; i++) {
5205                 params->freq = 5745 + i * 20;
5206                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5207                     freq_included(channels, params->freq) &&
5208                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5209                         goto out;
5210         }
5211
5212         /* try social channel class 180 channel 2 */
5213         params->freq = 58320 + 1 * 2160;
5214         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5215             freq_included(channels, params->freq) &&
5216             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5217                 goto out;
5218
5219         /* try all channels in reg. class 180 */
5220         for (i = 0; i < 4; i++) {
5221                 params->freq = 58320 + i * 2160;
5222                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5223                     freq_included(channels, params->freq) &&
5224                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5225                         goto out;
5226         }
5227
5228         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5229         return -1;
5230 out:
5231         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5232                    params->freq);
5233         return 0;
5234 }
5235
5236
5237 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5238                                    struct p2p_go_neg_results *params,
5239                                    int freq, int ht40, int vht,
5240                                    const struct p2p_channels *channels)
5241 {
5242         struct wpa_used_freq_data *freqs;
5243         unsigned int pref_freq, cand_freq;
5244         unsigned int num, i;
5245
5246         os_memset(params, 0, sizeof(*params));
5247         params->role_go = 1;
5248         params->ht40 = ht40;
5249         params->vht = vht;
5250         if (freq) {
5251                 if (!freq_included(channels, freq)) {
5252                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5253                                    "accepted", freq);
5254                         return -1;
5255                 }
5256                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5257                            "frequency %d MHz", freq);
5258                 params->freq = freq;
5259         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5260                    wpa_s->conf->p2p_oper_channel >= 1 &&
5261                    wpa_s->conf->p2p_oper_channel <= 11 &&
5262                    freq_included(channels,
5263                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5264                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5265                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5266                            "frequency %d MHz", params->freq);
5267         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5268                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5269                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5270                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5271                     wpa_s->conf->p2p_oper_reg_class == 125 ||
5272                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5273                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5274                    freq_included(channels,
5275                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5276                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5277                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5278                            "frequency %d MHz", params->freq);
5279         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5280                    wpa_s->best_overall_freq > 0 &&
5281                    p2p_supported_freq_go(wpa_s->global->p2p,
5282                                          wpa_s->best_overall_freq) &&
5283                    freq_included(channels, wpa_s->best_overall_freq)) {
5284                 params->freq = wpa_s->best_overall_freq;
5285                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5286                            "channel %d MHz", params->freq);
5287         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5288                    wpa_s->best_24_freq > 0 &&
5289                    p2p_supported_freq_go(wpa_s->global->p2p,
5290                                          wpa_s->best_24_freq) &&
5291                    freq_included(channels, wpa_s->best_24_freq)) {
5292                 params->freq = wpa_s->best_24_freq;
5293                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5294                            "channel %d MHz", params->freq);
5295         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5296                    wpa_s->best_5_freq > 0 &&
5297                    p2p_supported_freq_go(wpa_s->global->p2p,
5298                                          wpa_s->best_5_freq) &&
5299                    freq_included(channels, wpa_s->best_5_freq)) {
5300                 params->freq = wpa_s->best_5_freq;
5301                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5302                            "channel %d MHz", params->freq);
5303         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5304                                                   channels))) {
5305                 params->freq = pref_freq;
5306                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5307                            "channels", params->freq);
5308         } else {
5309                 /* no preference, select some channel */
5310                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5311                         return -1;
5312         }
5313
5314         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5315                           sizeof(struct wpa_used_freq_data));
5316         if (!freqs)
5317                 return -1;
5318
5319         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5320                                         wpa_s->num_multichan_concurrent);
5321
5322         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5323
5324         /* First try the best used frequency if possible */
5325         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5326                 params->freq = cand_freq;
5327         } else if (!freq) {
5328                 /* Try any of the used frequencies */
5329                 for (i = 0; i < num; i++) {
5330                         if (freq_included(channels, freqs[i].freq)) {
5331                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5332                                            freqs[i].freq);
5333                                 params->freq = freqs[i].freq;
5334                                 break;
5335                         }
5336                 }
5337
5338                 if (i == num) {
5339                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5340                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5341                                 os_free(freqs);
5342                                 return -1;
5343                         } else {
5344                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5345                         }
5346                 }
5347         } else {
5348                 for (i = 0; i < num; i++) {
5349                         if (freqs[i].freq == freq)
5350                                 break;
5351                 }
5352
5353                 if (i == num) {
5354                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5355                                 if (freq)
5356                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5357                                 os_free(freqs);
5358                                 return -1;
5359                         } else {
5360                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5361                         }
5362                 }
5363         }
5364
5365         os_free(freqs);
5366         return 0;
5367 }
5368
5369
5370 static struct wpa_supplicant *
5371 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5372                          int go)
5373 {
5374         struct wpa_supplicant *group_wpa_s;
5375
5376         if (!wpas_p2p_create_iface(wpa_s)) {
5377                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5378                         "operations");
5379                 wpa_s->p2p_first_connection_timeout = 0;
5380                 return wpa_s;
5381         }
5382
5383         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5384                                          WPA_IF_P2P_CLIENT) < 0) {
5385                 wpa_msg_global(wpa_s, MSG_ERROR,
5386                                "P2P: Failed to add group interface");
5387                 return NULL;
5388         }
5389         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5390         if (group_wpa_s == NULL) {
5391                 wpa_msg_global(wpa_s, MSG_ERROR,
5392                                "P2P: Failed to initialize group interface");
5393                 wpas_p2p_remove_pending_group_interface(wpa_s);
5394                 return NULL;
5395         }
5396
5397         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5398                 group_wpa_s->ifname);
5399         group_wpa_s->p2p_first_connection_timeout = 0;
5400         return group_wpa_s;
5401 }
5402
5403
5404 /**
5405  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5406  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5407  * @persistent_group: Whether to create a persistent group
5408  * @freq: Frequency for the group or 0 to indicate no hardcoding
5409  * @ht40: Start GO with 40 MHz channel width
5410  * @vht:  Start GO with VHT support
5411  * Returns: 0 on success, -1 on failure
5412  *
5413  * This function creates a new P2P group with the local end as the Group Owner,
5414  * i.e., without using Group Owner Negotiation.
5415  */
5416 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5417                        int freq, int ht40, int vht)
5418 {
5419         struct p2p_go_neg_results params;
5420
5421         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5422                 return -1;
5423
5424         os_free(wpa_s->global->add_psk);
5425         wpa_s->global->add_psk = NULL;
5426
5427         /* Make sure we are not running find during connection establishment */
5428         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5429         wpas_p2p_stop_find_oper(wpa_s);
5430
5431         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5432         if (freq < 0)
5433                 return -1;
5434
5435         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5436                 return -1;
5437         if (params.freq &&
5438             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5439                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5440                     ieee80211_is_dfs(params.freq)) {
5441                         /*
5442                          * If freq is a DFS channel and DFS is offloaded to the
5443                          * driver, allow P2P GO to use it.
5444                          */
5445                         wpa_printf(MSG_DEBUG,
5446                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5447                                 __func__, params.freq);
5448                 } else {
5449                         wpa_printf(MSG_DEBUG,
5450                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5451                                    params.freq);
5452                         return -1;
5453                 }
5454         }
5455         p2p_go_params(wpa_s->global->p2p, &params);
5456         params.persistent_group = persistent_group;
5457
5458         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5459         if (wpa_s == NULL)
5460                 return -1;
5461         wpas_start_wps_go(wpa_s, &params, 0);
5462
5463         return 0;
5464 }
5465
5466
5467 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5468                                  struct wpa_ssid *params, int addr_allocated,
5469                                  int freq)
5470 {
5471         struct wpa_ssid *ssid;
5472
5473         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5474         if (wpa_s == NULL)
5475                 return -1;
5476         wpa_s->p2p_last_4way_hs_fail = NULL;
5477
5478         wpa_supplicant_ap_deinit(wpa_s);
5479
5480         ssid = wpa_config_add_network(wpa_s->conf);
5481         if (ssid == NULL)
5482                 return -1;
5483         wpa_config_set_network_defaults(ssid);
5484         ssid->temporary = 1;
5485         ssid->proto = WPA_PROTO_RSN;
5486         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5487         ssid->group_cipher = WPA_CIPHER_CCMP;
5488         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5489         ssid->ssid = os_malloc(params->ssid_len);
5490         if (ssid->ssid == NULL) {
5491                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5492                 return -1;
5493         }
5494         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5495         ssid->ssid_len = params->ssid_len;
5496         ssid->p2p_group = 1;
5497         ssid->export_keys = 1;
5498         if (params->psk_set) {
5499                 os_memcpy(ssid->psk, params->psk, 32);
5500                 ssid->psk_set = 1;
5501         }
5502         if (params->passphrase)
5503                 ssid->passphrase = os_strdup(params->passphrase);
5504
5505         wpa_s->show_group_started = 1;
5506         wpa_s->p2p_in_invitation = 1;
5507         wpa_s->p2p_invite_go_freq = freq;
5508
5509         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5510                              NULL);
5511         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5512                                wpas_p2p_group_formation_timeout,
5513                                wpa_s->parent, NULL);
5514         wpa_supplicant_select_network(wpa_s, ssid);
5515
5516         return 0;
5517 }
5518
5519
5520 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5521                                   struct wpa_ssid *ssid, int addr_allocated,
5522                                   int force_freq, int neg_freq, int ht40,
5523                                   int vht, const struct p2p_channels *channels,
5524                                   int connection_timeout)
5525 {
5526         struct p2p_go_neg_results params;
5527         int go = 0, freq;
5528
5529         if (ssid->disabled != 2 || ssid->ssid == NULL)
5530                 return -1;
5531
5532         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5533             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5534                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5535                            "already running");
5536                 if (go == 0 &&
5537                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5538                                          wpa_s->parent, NULL)) {
5539                         /*
5540                          * This can happen if Invitation Response frame was lost
5541                          * and the peer (GO of a persistent group) tries to
5542                          * invite us again. Reschedule the timeout to avoid
5543                          * terminating the wait for the connection too early
5544                          * since we now know that the peer is still trying to
5545                          * invite us instead of having already started the GO.
5546                          */
5547                         wpa_printf(MSG_DEBUG,
5548                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5549                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5550                                                wpas_p2p_group_formation_timeout,
5551                                                wpa_s->parent, NULL);
5552                 }
5553                 return 0;
5554         }
5555
5556         os_free(wpa_s->global->add_psk);
5557         wpa_s->global->add_psk = NULL;
5558
5559         /* Make sure we are not running find during connection establishment */
5560         wpas_p2p_stop_find_oper(wpa_s);
5561
5562         wpa_s->p2p_fallback_to_go_neg = 0;
5563
5564         if (ssid->mode == WPAS_MODE_P2P_GO) {
5565                 if (force_freq > 0) {
5566                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5567                         if (freq < 0)
5568                                 return -1;
5569                 } else {
5570                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5571                         if (freq < 0 ||
5572                             (freq > 0 && !freq_included(channels, freq)))
5573                                 freq = 0;
5574                 }
5575         } else if (ssid->mode == WPAS_MODE_INFRA) {
5576                 freq = neg_freq;
5577                 if (freq <= 0 || !freq_included(channels, freq)) {
5578                         struct os_reltime now;
5579                         struct wpa_bss *bss =
5580                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5581
5582                         os_get_reltime(&now);
5583                         if (bss &&
5584                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5585                             freq_included(channels, bss->freq))
5586                                 freq = bss->freq;
5587                         else
5588                                 freq = 0;
5589                 }
5590
5591                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5592         } else {
5593                 return -1;
5594         }
5595
5596         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5597                 return -1;
5598
5599         params.role_go = 1;
5600         params.psk_set = ssid->psk_set;
5601         if (params.psk_set)
5602                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5603         if (ssid->passphrase) {
5604                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5605                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5606                                    "persistent group");
5607                         return -1;
5608                 }
5609                 os_strlcpy(params.passphrase, ssid->passphrase,
5610                            sizeof(params.passphrase));
5611         }
5612         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5613         params.ssid_len = ssid->ssid_len;
5614         params.persistent_group = 1;
5615
5616         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5617         if (wpa_s == NULL)
5618                 return -1;
5619
5620         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5621
5622         wpa_s->p2p_first_connection_timeout = connection_timeout;
5623         wpas_start_wps_go(wpa_s, &params, 0);
5624
5625         return 0;
5626 }
5627
5628
5629 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5630                                struct wpabuf *proberesp_ies)
5631 {
5632         struct wpa_supplicant *wpa_s = ctx;
5633         if (wpa_s->ap_iface) {
5634                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5635                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5636                         wpabuf_free(beacon_ies);
5637                         wpabuf_free(proberesp_ies);
5638                         return;
5639                 }
5640                 if (beacon_ies) {
5641                         wpabuf_free(hapd->p2p_beacon_ie);
5642                         hapd->p2p_beacon_ie = beacon_ies;
5643                 }
5644                 wpabuf_free(hapd->p2p_probe_resp_ie);
5645                 hapd->p2p_probe_resp_ie = proberesp_ies;
5646         } else {
5647                 wpabuf_free(beacon_ies);
5648                 wpabuf_free(proberesp_ies);
5649         }
5650         wpa_supplicant_ap_update_beacon(wpa_s);
5651 }
5652
5653
5654 static void wpas_p2p_idle_update(void *ctx, int idle)
5655 {
5656         struct wpa_supplicant *wpa_s = ctx;
5657         if (!wpa_s->ap_iface)
5658                 return;
5659         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5660         if (idle) {
5661                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5662                     wpa_s->p2p_in_provisioning) {
5663                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5664                         return;
5665                 }
5666                 wpas_p2p_set_group_idle_timeout(wpa_s);
5667         } else
5668                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5669 }
5670
5671
5672 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5673                                        struct wpa_ssid *ssid)
5674 {
5675         struct p2p_group *group;
5676         struct p2p_group_config *cfg;
5677
5678         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5679                 return NULL;
5680
5681         cfg = os_zalloc(sizeof(*cfg));
5682         if (cfg == NULL)
5683                 return NULL;
5684
5685         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5686                 cfg->persistent_group = 2;
5687         else if (ssid->p2p_persistent_group)
5688                 cfg->persistent_group = 1;
5689         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5690         if (wpa_s->max_stations &&
5691             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5692                 cfg->max_clients = wpa_s->max_stations;
5693         else
5694                 cfg->max_clients = wpa_s->conf->max_num_sta;
5695         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5696         cfg->ssid_len = ssid->ssid_len;
5697         cfg->freq = ssid->frequency;
5698         cfg->cb_ctx = wpa_s;
5699         cfg->ie_update = wpas_p2p_ie_update;
5700         cfg->idle_update = wpas_p2p_idle_update;
5701
5702         group = p2p_group_init(wpa_s->global->p2p, cfg);
5703         if (group == NULL)
5704                 os_free(cfg);
5705         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5706                 p2p_group_notif_formation_done(group);
5707         wpa_s->p2p_group = group;
5708         return group;
5709 }
5710
5711
5712 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5713                           int registrar)
5714 {
5715         struct wpa_ssid *ssid = wpa_s->current_ssid;
5716
5717         if (!wpa_s->p2p_in_provisioning) {
5718                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5719                            "provisioning not in progress");
5720                 return;
5721         }
5722
5723         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5724                 u8 go_dev_addr[ETH_ALEN];
5725                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5726                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5727                                           ssid->ssid_len);
5728                 /* Clear any stored provisioning info */
5729                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5730         }
5731
5732         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5733                              NULL);
5734         wpa_s->p2p_go_group_formation_completed = 1;
5735         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5736                 /*
5737                  * Use a separate timeout for initial data connection to
5738                  * complete to allow the group to be removed automatically if
5739                  * something goes wrong in this step before the P2P group idle
5740                  * timeout mechanism is taken into use.
5741                  */
5742                 wpa_dbg(wpa_s, MSG_DEBUG,
5743                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5744                         P2P_MAX_INITIAL_CONN_WAIT);
5745                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5746                                        wpas_p2p_group_formation_timeout,
5747                                        wpa_s->parent, NULL);
5748         } else if (ssid) {
5749                 /*
5750                  * Use a separate timeout for initial data connection to
5751                  * complete to allow the group to be removed automatically if
5752                  * the client does not complete data connection successfully.
5753                  */
5754                 wpa_dbg(wpa_s, MSG_DEBUG,
5755                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5756                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5757                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5758                                        wpas_p2p_group_formation_timeout,
5759                                        wpa_s->parent, NULL);
5760                 /*
5761                  * Complete group formation on first successful data connection
5762                  */
5763                 wpa_s->p2p_go_group_formation_completed = 0;
5764         }
5765         if (wpa_s->global->p2p)
5766                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5767         wpas_group_formation_completed(wpa_s, 1, 0);
5768 }
5769
5770
5771 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5772                          struct wps_event_fail *fail)
5773 {
5774         if (!wpa_s->p2p_in_provisioning) {
5775                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5776                            "provisioning not in progress");
5777                 return;
5778         }
5779
5780         if (wpa_s->go_params) {
5781                 p2p_clear_provisioning_info(
5782                         wpa_s->global->p2p,
5783                         wpa_s->go_params->peer_device_addr);
5784         }
5785
5786         wpas_notify_p2p_wps_failed(wpa_s, fail);
5787
5788         if (wpa_s == wpa_s->global->p2p_group_formation) {
5789                 /*
5790                  * Allow some time for the failed WPS negotiation exchange to
5791                  * complete, but remove the group since group formation cannot
5792                  * succeed after provisioning failure.
5793                  */
5794                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5795                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5796                 eloop_deplete_timeout(0, 50000,
5797                                       wpas_p2p_group_formation_timeout,
5798                                       wpa_s->parent, NULL);
5799         }
5800 }
5801
5802
5803 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5804 {
5805         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5806             !wpa_s->p2p_in_provisioning)
5807                 return 0;
5808
5809         wpas_p2p_grpform_fail_after_wps(wpa_s);
5810
5811         return 1;
5812 }
5813
5814
5815 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5816                        const char *config_method,
5817                        enum wpas_p2p_prov_disc_use use,
5818                        struct p2ps_provision *p2ps_prov)
5819 {
5820         u16 config_methods;
5821
5822         wpa_s->global->pending_p2ps_group = 0;
5823         wpa_s->p2p_fallback_to_go_neg = 0;
5824         wpa_s->pending_pd_use = NORMAL_PD;
5825         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5826                 p2ps_prov->conncap = p2ps_group_capability(
5827                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5828                 wpa_printf(MSG_DEBUG,
5829                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5830                            __func__, p2ps_prov->conncap,
5831                            p2ps_prov->adv_id, p2ps_prov->conncap,
5832                            p2ps_prov->status, p2ps_prov->info);
5833
5834                 config_methods = 0;
5835         } else if (os_strncmp(config_method, "display", 7) == 0)
5836                 config_methods = WPS_CONFIG_DISPLAY;
5837         else if (os_strncmp(config_method, "keypad", 6) == 0)
5838                 config_methods = WPS_CONFIG_KEYPAD;
5839         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5840                  os_strncmp(config_method, "pushbutton", 10) == 0)
5841                 config_methods = WPS_CONFIG_PUSHBUTTON;
5842         else {
5843                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5844                 os_free(p2ps_prov);
5845                 return -1;
5846         }
5847
5848         if (use == WPAS_P2P_PD_AUTO) {
5849                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5850                 wpa_s->pending_pd_config_methods = config_methods;
5851                 wpa_s->p2p_auto_pd = 1;
5852                 wpa_s->p2p_auto_join = 0;
5853                 wpa_s->pending_pd_before_join = 0;
5854                 wpa_s->auto_pd_scan_retry = 0;
5855                 wpas_p2p_stop_find(wpa_s);
5856                 wpa_s->p2p_join_scan_count = 0;
5857                 os_get_reltime(&wpa_s->p2p_auto_started);
5858                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5859                            wpa_s->p2p_auto_started.sec,
5860                            wpa_s->p2p_auto_started.usec);
5861                 wpas_p2p_join_scan(wpa_s, NULL);
5862                 return 0;
5863         }
5864
5865         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5866                 os_free(p2ps_prov);
5867                 return -1;
5868         }
5869
5870         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5871                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5872                                  0, 1);
5873 }
5874
5875
5876 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5877                               char *end)
5878 {
5879         return p2p_scan_result_text(ies, ies_len, buf, end);
5880 }
5881
5882
5883 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5884 {
5885         if (!offchannel_pending_action_tx(wpa_s))
5886                 return;
5887
5888         wpas_p2p_action_tx_clear(wpa_s);
5889
5890         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5891                    "operation request");
5892         offchannel_clear_pending_action_tx(wpa_s);
5893 }
5894
5895
5896 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5897                   enum p2p_discovery_type type,
5898                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5899                   const u8 *dev_id, unsigned int search_delay,
5900                   u8 seek_cnt, const char **seek_string, int freq)
5901 {
5902         wpas_p2p_clear_pending_action_tx(wpa_s);
5903         wpa_s->p2p_long_listen = 0;
5904
5905         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5906             wpa_s->p2p_in_provisioning)
5907                 return -1;
5908
5909         wpa_supplicant_cancel_sched_scan(wpa_s);
5910
5911         return p2p_find(wpa_s->global->p2p, timeout, type,
5912                         num_req_dev_types, req_dev_types, dev_id,
5913                         search_delay, seek_cnt, seek_string, freq);
5914 }
5915
5916
5917 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5918                                             struct wpa_scan_results *scan_res)
5919 {
5920         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5921
5922         if (wpa_s->p2p_scan_work) {
5923                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5924                 wpa_s->p2p_scan_work = NULL;
5925                 radio_work_done(work);
5926         }
5927
5928         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5929                 return;
5930
5931         /*
5932          * Indicate that results have been processed so that the P2P module can
5933          * continue pending tasks.
5934          */
5935         p2p_scan_res_handled(wpa_s->global->p2p);
5936 }
5937
5938
5939 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5940 {
5941         wpas_p2p_clear_pending_action_tx(wpa_s);
5942         wpa_s->p2p_long_listen = 0;
5943         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5944         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5945
5946         if (wpa_s->global->p2p)
5947                 p2p_stop_find(wpa_s->global->p2p);
5948
5949         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
5950                 wpa_printf(MSG_DEBUG,
5951                            "P2P: Do not consider the scan results after stop_find");
5952                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
5953         }
5954 }
5955
5956
5957 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5958 {
5959         wpas_p2p_stop_find_oper(wpa_s);
5960         if (!wpa_s->global->pending_group_iface_for_p2ps)
5961                 wpas_p2p_remove_pending_group_interface(wpa_s);
5962 }
5963
5964
5965 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5966 {
5967         struct wpa_supplicant *wpa_s = eloop_ctx;
5968         wpa_s->p2p_long_listen = 0;
5969 }
5970
5971
5972 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5973 {
5974         int res;
5975
5976         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5977                 return -1;
5978
5979         wpa_supplicant_cancel_sched_scan(wpa_s);
5980         wpas_p2p_clear_pending_action_tx(wpa_s);
5981
5982         if (timeout == 0) {
5983                 /*
5984                  * This is a request for unlimited Listen state. However, at
5985                  * least for now, this is mapped to a Listen state for one
5986                  * hour.
5987                  */
5988                 timeout = 3600;
5989         }
5990         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5991         wpa_s->p2p_long_listen = 0;
5992
5993         /*
5994          * Stop previous find/listen operation to avoid trying to request a new
5995          * remain-on-channel operation while the driver is still running the
5996          * previous one.
5997          */
5998         if (wpa_s->global->p2p)
5999                 p2p_stop_find(wpa_s->global->p2p);
6000
6001         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6002         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6003                 wpa_s->p2p_long_listen = timeout * 1000;
6004                 eloop_register_timeout(timeout, 0,
6005                                        wpas_p2p_long_listen_timeout,
6006                                        wpa_s, NULL);
6007         }
6008
6009         return res;
6010 }
6011
6012
6013 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6014                           u8 *buf, size_t len, int p2p_group)
6015 {
6016         struct wpabuf *p2p_ie;
6017         int ret;
6018
6019         if (wpa_s->global->p2p_disabled)
6020                 return -1;
6021         /*
6022          * Advertize mandatory cross connection capability even on
6023          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6024          */
6025         if (wpa_s->conf->p2p_disabled && p2p_group)
6026                 return -1;
6027         if (wpa_s->global->p2p == NULL)
6028                 return -1;
6029         if (bss == NULL)
6030                 return -1;
6031
6032         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6033         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6034                                p2p_group, p2p_ie);
6035         wpabuf_free(p2p_ie);
6036
6037         return ret;
6038 }
6039
6040
6041 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6042                           const u8 *dst, const u8 *bssid,
6043                           const u8 *ie, size_t ie_len,
6044                           unsigned int rx_freq, int ssi_signal)
6045 {
6046         if (wpa_s->global->p2p_disabled)
6047                 return 0;
6048         if (wpa_s->global->p2p == NULL)
6049                 return 0;
6050
6051         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6052                                  ie, ie_len, rx_freq)) {
6053         case P2P_PREQ_NOT_P2P:
6054                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6055                                  ssi_signal);
6056                 /* fall through */
6057         case P2P_PREQ_MALFORMED:
6058         case P2P_PREQ_NOT_LISTEN:
6059         case P2P_PREQ_NOT_PROCESSED:
6060         default: /* make gcc happy */
6061                 return 0;
6062         case P2P_PREQ_PROCESSED:
6063                 return 1;
6064         }
6065 }
6066
6067
6068 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6069                         const u8 *sa, const u8 *bssid,
6070                         u8 category, const u8 *data, size_t len, int freq)
6071 {
6072         if (wpa_s->global->p2p_disabled)
6073                 return;
6074         if (wpa_s->global->p2p == NULL)
6075                 return;
6076
6077         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6078                       freq);
6079 }
6080
6081
6082 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6083 {
6084         if (wpa_s->global->p2p_disabled)
6085                 return;
6086         if (wpa_s->global->p2p == NULL)
6087                 return;
6088
6089         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6090 }
6091
6092
6093 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6094 {
6095         p2p_group_deinit(wpa_s->p2p_group);
6096         wpa_s->p2p_group = NULL;
6097
6098         wpa_s->ap_configured_cb = NULL;
6099         wpa_s->ap_configured_cb_ctx = NULL;
6100         wpa_s->ap_configured_cb_data = NULL;
6101         wpa_s->connect_without_scan = NULL;
6102 }
6103
6104
6105 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6106 {
6107         wpa_s->p2p_long_listen = 0;
6108
6109         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6110                 return -1;
6111
6112         return p2p_reject(wpa_s->global->p2p, addr);
6113 }
6114
6115
6116 /* Invite to reinvoke a persistent group */
6117 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6118                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6119                     int ht40, int vht, int pref_freq)
6120 {
6121         enum p2p_invite_role role;
6122         u8 *bssid = NULL;
6123         int force_freq = 0;
6124         int res;
6125         int no_pref_freq_given = pref_freq == 0;
6126
6127         wpa_s->global->p2p_invite_group = NULL;
6128         if (peer_addr)
6129                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6130         else
6131                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6132
6133         wpa_s->p2p_persistent_go_freq = freq;
6134         wpa_s->p2p_go_ht40 = !!ht40;
6135         if (ssid->mode == WPAS_MODE_P2P_GO) {
6136                 role = P2P_INVITE_ROLE_GO;
6137                 if (peer_addr == NULL) {
6138                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6139                                    "address in invitation command");
6140                         return -1;
6141                 }
6142                 if (wpas_p2p_create_iface(wpa_s)) {
6143                         if (wpas_p2p_add_group_interface(wpa_s,
6144                                                          WPA_IF_P2P_GO) < 0) {
6145                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6146                                            "allocate a new interface for the "
6147                                            "group");
6148                                 return -1;
6149                         }
6150                         bssid = wpa_s->pending_interface_addr;
6151                 } else
6152                         bssid = wpa_s->own_addr;
6153         } else {
6154                 role = P2P_INVITE_ROLE_CLIENT;
6155                 peer_addr = ssid->bssid;
6156         }
6157         wpa_s->pending_invite_ssid_id = ssid->id;
6158
6159         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6160                                    role == P2P_INVITE_ROLE_GO);
6161         if (res)
6162                 return res;
6163
6164         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6165                 return -1;
6166
6167         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6168             no_pref_freq_given && pref_freq > 0 &&
6169             wpa_s->num_multichan_concurrent > 1 &&
6170             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6171                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6172                            pref_freq);
6173                 pref_freq = 0;
6174         }
6175
6176         /*
6177          * Stop any find/listen operations before invitation and possibly
6178          * connection establishment.
6179          */
6180         wpas_p2p_stop_find_oper(wpa_s);
6181
6182         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6183                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6184                           1, pref_freq, -1);
6185 }
6186
6187
6188 /* Invite to join an active group */
6189 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6190                           const u8 *peer_addr, const u8 *go_dev_addr)
6191 {
6192         struct wpa_global *global = wpa_s->global;
6193         enum p2p_invite_role role;
6194         u8 *bssid = NULL;
6195         struct wpa_ssid *ssid;
6196         int persistent;
6197         int freq = 0, force_freq = 0, pref_freq = 0;
6198         int res;
6199
6200         wpa_s->p2p_persistent_go_freq = 0;
6201         wpa_s->p2p_go_ht40 = 0;
6202         wpa_s->p2p_go_vht = 0;
6203
6204         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6205                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6206                         break;
6207         }
6208         if (wpa_s == NULL) {
6209                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6210                 return -1;
6211         }
6212
6213         ssid = wpa_s->current_ssid;
6214         if (ssid == NULL) {
6215                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6216                            "invitation");
6217                 return -1;
6218         }
6219
6220         wpa_s->global->p2p_invite_group = wpa_s;
6221         persistent = ssid->p2p_persistent_group &&
6222                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6223                                         ssid->ssid, ssid->ssid_len);
6224
6225         if (ssid->mode == WPAS_MODE_P2P_GO) {
6226                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6227                 bssid = wpa_s->own_addr;
6228                 if (go_dev_addr == NULL)
6229                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6230                 freq = ssid->frequency;
6231         } else {
6232                 role = P2P_INVITE_ROLE_CLIENT;
6233                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6234                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6235                                    "invite to current group");
6236                         return -1;
6237                 }
6238                 bssid = wpa_s->bssid;
6239                 if (go_dev_addr == NULL &&
6240                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6241                         go_dev_addr = wpa_s->go_dev_addr;
6242                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6243                         (int) wpa_s->assoc_freq;
6244         }
6245         wpa_s->parent->pending_invite_ssid_id = -1;
6246
6247         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6248                 return -1;
6249
6250         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6251                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6252         if (res)
6253                 return res;
6254         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6255
6256         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6257                           ssid->ssid, ssid->ssid_len, force_freq,
6258                           go_dev_addr, persistent, pref_freq, -1);
6259 }
6260
6261
6262 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6263 {
6264         struct wpa_ssid *ssid = wpa_s->current_ssid;
6265         u8 go_dev_addr[ETH_ALEN];
6266         int network_id = -1;
6267         int persistent;
6268         int freq;
6269         u8 ip[3 * 4];
6270         char ip_addr[100];
6271
6272         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6273                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6274                                      wpa_s->parent, NULL);
6275         }
6276
6277         if (!wpa_s->show_group_started || !ssid)
6278                 return;
6279
6280         wpa_s->show_group_started = 0;
6281
6282         os_memset(go_dev_addr, 0, ETH_ALEN);
6283         if (ssid->bssid_set)
6284                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6285         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6286                                                ssid->ssid_len);
6287         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6288
6289         if (wpa_s->global->p2p_group_formation == wpa_s)
6290                 wpa_s->global->p2p_group_formation = NULL;
6291
6292         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6293                 (int) wpa_s->assoc_freq;
6294
6295         ip_addr[0] = '\0';
6296         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6297                 int res;
6298
6299                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6300                                   " ip_addr=%u.%u.%u.%u "
6301                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6302                                   ip[0], ip[1], ip[2], ip[3],
6303                                   ip[4], ip[5], ip[6], ip[7],
6304                                   ip[8], ip[9], ip[10], ip[11]);
6305                 if (os_snprintf_error(sizeof(ip_addr), res))
6306                         ip_addr[0] = '\0';
6307         }
6308
6309         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6310                                ssid->passphrase == NULL && ssid->psk_set ?
6311                                ssid->psk : NULL,
6312                                ssid->passphrase, go_dev_addr, persistent,
6313                                ip_addr);
6314
6315         if (persistent)
6316                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6317                                                              ssid, go_dev_addr);
6318         if (network_id < 0)
6319                 network_id = ssid->id;
6320         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6321 }
6322
6323
6324 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6325                           u32 interval1, u32 duration2, u32 interval2)
6326 {
6327         int ret;
6328
6329         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6330                 return -1;
6331
6332         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6333             wpa_s->current_ssid == NULL ||
6334             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6335                 return -1;
6336
6337         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6338                                wpa_s->own_addr, wpa_s->assoc_freq,
6339                                duration1, interval1, duration2, interval2);
6340         if (ret == 0)
6341                 wpa_s->waiting_presence_resp = 1;
6342
6343         return ret;
6344 }
6345
6346
6347 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6348                         unsigned int interval)
6349 {
6350         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6351                 return -1;
6352
6353         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6354 }
6355
6356
6357 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6358 {
6359         if (wpa_s->current_ssid == NULL) {
6360                 /*
6361                  * current_ssid can be cleared when P2P client interface gets
6362                  * disconnected, so assume this interface was used as P2P
6363                  * client.
6364                  */
6365                 return 1;
6366         }
6367         return wpa_s->current_ssid->p2p_group &&
6368                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6369 }
6370
6371
6372 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6373 {
6374         struct wpa_supplicant *wpa_s = eloop_ctx;
6375
6376         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6377                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6378                            "disabled");
6379                 return;
6380         }
6381
6382         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6383                    "group");
6384         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6385 }
6386
6387
6388 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6389 {
6390         int timeout;
6391
6392         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6393                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6394
6395         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6396                 return;
6397
6398         timeout = wpa_s->conf->p2p_group_idle;
6399         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6400             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6401             timeout = P2P_MAX_CLIENT_IDLE;
6402
6403         if (timeout == 0)
6404                 return;
6405
6406         if (timeout < 0) {
6407                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6408                         timeout = 0; /* special client mode no-timeout */
6409                 else
6410                         return;
6411         }
6412
6413         if (wpa_s->p2p_in_provisioning) {
6414                 /*
6415                  * Use the normal group formation timeout during the
6416                  * provisioning phase to avoid terminating this process too
6417                  * early due to group idle timeout.
6418                  */
6419                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6420                            "during provisioning");
6421                 return;
6422         }
6423
6424         if (wpa_s->show_group_started) {
6425                 /*
6426                  * Use the normal group formation timeout between the end of
6427                  * the provisioning phase and completion of 4-way handshake to
6428                  * avoid terminating this process too early due to group idle
6429                  * timeout.
6430                  */
6431                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6432                            "while waiting for initial 4-way handshake to "
6433                            "complete");
6434                 return;
6435         }
6436
6437         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6438                    timeout);
6439         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6440                                wpa_s, NULL);
6441 }
6442
6443
6444 /* Returns 1 if the interface was removed */
6445 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6446                           u16 reason_code, const u8 *ie, size_t ie_len,
6447                           int locally_generated)
6448 {
6449         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6450                 return 0;
6451
6452         if (!locally_generated)
6453                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6454                                  ie_len);
6455
6456         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6457             wpa_s->current_ssid &&
6458             wpa_s->current_ssid->p2p_group &&
6459             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6460                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6461                            "session is ending");
6462                 if (wpas_p2p_group_delete(wpa_s,
6463                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6464                     > 0)
6465                         return 1;
6466         }
6467
6468         return 0;
6469 }
6470
6471
6472 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6473                              u16 reason_code, const u8 *ie, size_t ie_len,
6474                              int locally_generated)
6475 {
6476         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6477                 return;
6478
6479         if (!locally_generated)
6480                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6481                                    ie_len);
6482 }
6483
6484
6485 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6486 {
6487         struct p2p_data *p2p = wpa_s->global->p2p;
6488
6489         if (p2p == NULL)
6490                 return;
6491
6492         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6493                 return;
6494
6495         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6496                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6497
6498         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6499                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6500
6501         if (wpa_s->wps &&
6502             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6503                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6504
6505         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6506                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6507
6508         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6509                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6510                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6511                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6512                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6513         }
6514
6515         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6516                 p2p_set_sec_dev_types(p2p,
6517                                       (void *) wpa_s->conf->sec_device_type,
6518                                       wpa_s->conf->num_sec_device_types);
6519
6520         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6521                 int i;
6522                 p2p_remove_wps_vendor_extensions(p2p);
6523                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6524                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6525                                 continue;
6526                         p2p_add_wps_vendor_extension(
6527                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6528                 }
6529         }
6530
6531         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6532             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6533                 char country[3];
6534                 country[0] = wpa_s->conf->country[0];
6535                 country[1] = wpa_s->conf->country[1];
6536                 country[2] = 0x04;
6537                 p2p_set_country(p2p, country);
6538         }
6539
6540         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6541                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6542                                      wpa_s->conf->p2p_ssid_postfix ?
6543                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6544                                      0);
6545         }
6546
6547         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6548                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6549
6550         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6551                 u8 reg_class, channel;
6552                 int ret;
6553                 unsigned int r;
6554                 u8 channel_forced;
6555
6556                 if (wpa_s->conf->p2p_listen_reg_class &&
6557                     wpa_s->conf->p2p_listen_channel) {
6558                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6559                         channel = wpa_s->conf->p2p_listen_channel;
6560                         channel_forced = 1;
6561                 } else {
6562                         reg_class = 81;
6563                         /*
6564                          * Pick one of the social channels randomly as the
6565                          * listen channel.
6566                          */
6567                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6568                                 channel = 1;
6569                         else
6570                                 channel = 1 + (r % 3) * 5;
6571                         channel_forced = 0;
6572                 }
6573                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6574                                              channel_forced);
6575                 if (ret)
6576                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6577                                    "failed: %d", ret);
6578         }
6579         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6580                 u8 op_reg_class, op_channel, cfg_op_channel;
6581                 int ret = 0;
6582                 unsigned int r;
6583                 if (wpa_s->conf->p2p_oper_reg_class &&
6584                     wpa_s->conf->p2p_oper_channel) {
6585                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6586                         op_channel = wpa_s->conf->p2p_oper_channel;
6587                         cfg_op_channel = 1;
6588                 } else {
6589                         op_reg_class = 81;
6590                         /*
6591                          * Use random operation channel from (1, 6, 11)
6592                          *if no other preference is indicated.
6593                          */
6594                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6595                                 op_channel = 1;
6596                         else
6597                                 op_channel = 1 + (r % 3) * 5;
6598                         cfg_op_channel = 0;
6599                 }
6600                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6601                                            cfg_op_channel);
6602                 if (ret)
6603                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6604                                    "failed: %d", ret);
6605         }
6606
6607         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6608                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6609                                       wpa_s->conf->p2p_pref_chan) < 0) {
6610                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6611                                    "update failed");
6612                 }
6613
6614                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6615                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6616                                    "update failed");
6617                 }
6618         }
6619
6620         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6621                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6622 }
6623
6624
6625 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6626                      int duration)
6627 {
6628         if (!wpa_s->ap_iface)
6629                 return -1;
6630         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6631                                    duration);
6632 }
6633
6634
6635 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6636 {
6637         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6638                 return -1;
6639
6640         wpa_s->global->cross_connection = enabled;
6641         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6642
6643         if (!enabled) {
6644                 struct wpa_supplicant *iface;
6645
6646                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6647                 {
6648                         if (iface->cross_connect_enabled == 0)
6649                                 continue;
6650
6651                         iface->cross_connect_enabled = 0;
6652                         iface->cross_connect_in_use = 0;
6653                         wpa_msg_global(iface->parent, MSG_INFO,
6654                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6655                                        iface->ifname,
6656                                        iface->cross_connect_uplink);
6657                 }
6658         }
6659
6660         return 0;
6661 }
6662
6663
6664 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6665 {
6666         struct wpa_supplicant *iface;
6667
6668         if (!uplink->global->cross_connection)
6669                 return;
6670
6671         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6672                 if (!iface->cross_connect_enabled)
6673                         continue;
6674                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6675                     0)
6676                         continue;
6677                 if (iface->ap_iface == NULL)
6678                         continue;
6679                 if (iface->cross_connect_in_use)
6680                         continue;
6681
6682                 iface->cross_connect_in_use = 1;
6683                 wpa_msg_global(iface->parent, MSG_INFO,
6684                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6685                                iface->ifname, iface->cross_connect_uplink);
6686         }
6687 }
6688
6689
6690 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6691 {
6692         struct wpa_supplicant *iface;
6693
6694         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6695                 if (!iface->cross_connect_enabled)
6696                         continue;
6697                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6698                     0)
6699                         continue;
6700                 if (!iface->cross_connect_in_use)
6701                         continue;
6702
6703                 wpa_msg_global(iface->parent, MSG_INFO,
6704                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6705                                iface->ifname, iface->cross_connect_uplink);
6706                 iface->cross_connect_in_use = 0;
6707         }
6708 }
6709
6710
6711 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6712 {
6713         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6714             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6715             wpa_s->cross_connect_disallowed)
6716                 wpas_p2p_disable_cross_connect(wpa_s);
6717         else
6718                 wpas_p2p_enable_cross_connect(wpa_s);
6719         if (!wpa_s->ap_iface &&
6720             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6721                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6722 }
6723
6724
6725 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6726 {
6727         wpas_p2p_disable_cross_connect(wpa_s);
6728         if (!wpa_s->ap_iface &&
6729             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6730                                          wpa_s, NULL))
6731                 wpas_p2p_set_group_idle_timeout(wpa_s);
6732 }
6733
6734
6735 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6736 {
6737         struct wpa_supplicant *iface;
6738
6739         if (!wpa_s->global->cross_connection)
6740                 return;
6741
6742         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6743                 if (iface == wpa_s)
6744                         continue;
6745                 if (iface->drv_flags &
6746                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6747                         continue;
6748                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6749                     iface != wpa_s->parent)
6750                         continue;
6751
6752                 wpa_s->cross_connect_enabled = 1;
6753                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6754                            sizeof(wpa_s->cross_connect_uplink));
6755                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6756                            "%s to %s whenever uplink is available",
6757                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6758
6759                 if (iface->ap_iface || iface->current_ssid == NULL ||
6760                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6761                     iface->cross_connect_disallowed ||
6762                     iface->wpa_state != WPA_COMPLETED)
6763                         break;
6764
6765                 wpa_s->cross_connect_in_use = 1;
6766                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6767                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6768                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6769                 break;
6770         }
6771 }
6772
6773
6774 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6775 {
6776         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6777             !wpa_s->p2p_in_provisioning)
6778                 return 0; /* not P2P client operation */
6779
6780         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6781                    "session overlap");
6782         if (wpa_s != wpa_s->parent)
6783                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6784         wpas_p2p_group_formation_failed(wpa_s, 0);
6785         return 1;
6786 }
6787
6788
6789 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6790 {
6791         struct wpa_supplicant *wpa_s = eloop_ctx;
6792         wpas_p2p_notif_pbc_overlap(wpa_s);
6793 }
6794
6795
6796 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6797 {
6798         struct p2p_channels chan, cli_chan;
6799         struct wpa_supplicant *ifs;
6800
6801         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6802                 return;
6803
6804         os_memset(&chan, 0, sizeof(chan));
6805         os_memset(&cli_chan, 0, sizeof(cli_chan));
6806         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6807                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6808                            "channel list");
6809                 return;
6810         }
6811
6812         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6813
6814         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6815                 int freq;
6816                 if (!ifs->current_ssid ||
6817                     !ifs->current_ssid->p2p_group ||
6818                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6819                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6820                                 continue;
6821                 freq = ifs->current_ssid->frequency;
6822                 if (freq_included(&chan, freq)) {
6823                         wpa_dbg(ifs, MSG_DEBUG,
6824                                 "P2P GO operating frequency %d MHz in valid range",
6825                                 freq);
6826                         continue;
6827                 }
6828
6829                 wpa_dbg(ifs, MSG_DEBUG,
6830                         "P2P GO operating in invalid frequency %d MHz", freq);
6831                 /* TODO: Consider using CSA or removing the group within
6832                  * wpa_supplicant */
6833                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6834         }
6835 }
6836
6837
6838 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6839                                      struct wpa_scan_results *scan_res)
6840 {
6841         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6842 }
6843
6844
6845 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6846 {
6847         struct wpa_global *global = wpa_s->global;
6848         int found = 0;
6849         const u8 *peer;
6850
6851         if (global->p2p == NULL)
6852                 return -1;
6853
6854         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6855
6856         if (wpa_s->pending_interface_name[0] &&
6857             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6858                 found = 1;
6859
6860         peer = p2p_get_go_neg_peer(global->p2p);
6861         if (peer) {
6862                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6863                            MACSTR, MAC2STR(peer));
6864                 p2p_unauthorize(global->p2p, peer);
6865                 found = 1;
6866         }
6867
6868         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6869                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6870                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6871                 found = 1;
6872         }
6873
6874         if (wpa_s->pending_pd_before_join) {
6875                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6876                 wpa_s->pending_pd_before_join = 0;
6877                 found = 1;
6878         }
6879
6880         wpas_p2p_stop_find(wpa_s);
6881
6882         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6883                 if (wpa_s == global->p2p_group_formation &&
6884                     (wpa_s->p2p_in_provisioning ||
6885                      wpa_s->parent->pending_interface_type ==
6886                      WPA_IF_P2P_CLIENT)) {
6887                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6888                                    "formation found - cancelling",
6889                                    wpa_s->ifname);
6890                         found = 1;
6891                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6892                                              wpa_s->parent, NULL);
6893                         if (wpa_s->p2p_in_provisioning) {
6894                                 wpas_group_formation_completed(wpa_s, 0, 0);
6895                                 break;
6896                         }
6897                         wpas_p2p_group_delete(wpa_s,
6898                                               P2P_GROUP_REMOVAL_REQUESTED);
6899                         break;
6900                 } else if (wpa_s->p2p_in_invitation) {
6901                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6902                                    wpa_s->ifname);
6903                         found = 1;
6904                         wpas_p2p_group_formation_failed(wpa_s, 0);
6905                 }
6906         }
6907
6908         if (!found) {
6909                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6910                 return -1;
6911         }
6912
6913         return 0;
6914 }
6915
6916
6917 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6918 {
6919         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6920                 return;
6921
6922         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6923                    "being available anymore");
6924         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6925 }
6926
6927
6928 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6929                                    int freq_24, int freq_5, int freq_overall)
6930 {
6931         struct p2p_data *p2p = wpa_s->global->p2p;
6932         if (p2p == NULL)
6933                 return;
6934         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6935 }
6936
6937
6938 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6939 {
6940         u8 peer[ETH_ALEN];
6941         struct p2p_data *p2p = wpa_s->global->p2p;
6942
6943         if (p2p == NULL)
6944                 return -1;
6945
6946         if (hwaddr_aton(addr, peer))
6947                 return -1;
6948
6949         return p2p_unauthorize(p2p, peer);
6950 }
6951
6952
6953 /**
6954  * wpas_p2p_disconnect - Disconnect from a P2P Group
6955  * @wpa_s: Pointer to wpa_supplicant data
6956  * Returns: 0 on success, -1 on failure
6957  *
6958  * This can be used to disconnect from a group in which the local end is a P2P
6959  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6960  * virtual network interface was created for this group, that interface will be
6961  * removed. Otherwise, only the configured P2P group network will be removed
6962  * from the interface.
6963  */
6964 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6965 {
6966
6967         if (wpa_s == NULL)
6968                 return -1;
6969
6970         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6971                 -1 : 0;
6972 }
6973
6974
6975 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6976 {
6977         int ret;
6978
6979         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6980                 return 0;
6981
6982         ret = p2p_in_progress(wpa_s->global->p2p);
6983         if (ret == 0) {
6984                 /*
6985                  * Check whether there is an ongoing WPS provisioning step (or
6986                  * other parts of group formation) on another interface since
6987                  * p2p_in_progress() does not report this to avoid issues for
6988                  * scans during such provisioning step.
6989                  */
6990                 if (wpa_s->global->p2p_group_formation &&
6991                     wpa_s->global->p2p_group_formation != wpa_s) {
6992                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6993                                 "in group formation",
6994                                 wpa_s->global->p2p_group_formation->ifname);
6995                         ret = 1;
6996                 }
6997         }
6998
6999         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7000                 struct os_reltime now;
7001                 os_get_reltime(&now);
7002                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7003                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7004                         /* Wait for the first client has expired */
7005                         wpa_s->global->p2p_go_wait_client.sec = 0;
7006                 } else {
7007                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7008                         ret = 1;
7009                 }
7010         }
7011
7012         return ret;
7013 }
7014
7015
7016 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7017                               struct wpa_ssid *ssid)
7018 {
7019         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7020             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7021                                  wpa_s->parent, NULL) > 0) {
7022                 /**
7023                  * Remove the network by scheduling the group formation
7024                  * timeout to happen immediately. The teardown code
7025                  * needs to be scheduled to run asynch later so that we
7026                  * don't delete data from under ourselves unexpectedly.
7027                  * Calling wpas_p2p_group_formation_timeout directly
7028                  * causes a series of crashes in WPS failure scenarios.
7029                  */
7030                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7031                            "P2P group network getting removed");
7032                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7033                                        wpa_s->parent, NULL);
7034         }
7035 }
7036
7037
7038 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7039                                           const u8 *addr, const u8 *ssid,
7040                                           size_t ssid_len)
7041 {
7042         struct wpa_ssid *s;
7043         size_t i;
7044
7045         for (s = wpa_s->conf->ssid; s; s = s->next) {
7046                 if (s->disabled != 2)
7047                         continue;
7048                 if (ssid &&
7049                     (ssid_len != s->ssid_len ||
7050                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7051                         continue;
7052                 if (addr == NULL) {
7053                         if (s->mode == WPAS_MODE_P2P_GO)
7054                                 return s;
7055                         continue;
7056                 }
7057                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7058                         return s; /* peer is GO in the persistent group */
7059                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7060                         continue;
7061                 for (i = 0; i < s->num_p2p_clients; i++) {
7062                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7063                                       addr, ETH_ALEN) == 0)
7064                                 return s; /* peer is P2P client in persistent
7065                                            * group */
7066                 }
7067         }
7068
7069         return NULL;
7070 }
7071
7072
7073 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7074                                        const u8 *addr)
7075 {
7076         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7077                                  wpa_s->parent, NULL) > 0) {
7078                 /*
7079                  * This can happen if WPS provisioning step is not terminated
7080                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7081                  * peer was able to connect, there is no need to time out group
7082                  * formation after this, though. In addition, this is used with
7083                  * the initial connection wait on the GO as a separate formation
7084                  * timeout and as such, expected to be hit after the initial WPS
7085                  * provisioning step.
7086                  */
7087                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7088
7089                 if (!wpa_s->p2p_go_group_formation_completed &&
7090                     !wpa_s->group_formation_reported) {
7091                         /*
7092                          * GO has not yet notified group formation success since
7093                          * the WPS step was not completed cleanly. Do that
7094                          * notification now since the P2P Client was able to
7095                          * connect and as such, must have received the
7096                          * credential from the WPS step.
7097                          */
7098                         if (wpa_s->global->p2p)
7099                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7100                         wpas_group_formation_completed(wpa_s, 1, 0);
7101                 }
7102         }
7103         if (!wpa_s->p2p_go_group_formation_completed) {
7104                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7105                 wpa_s->p2p_go_group_formation_completed = 1;
7106                 wpa_s->global->p2p_group_formation = NULL;
7107                 wpa_s->p2p_in_provisioning = 0;
7108                 wpa_s->p2p_in_invitation = 0;
7109         }
7110         wpa_s->global->p2p_go_wait_client.sec = 0;
7111         if (addr == NULL)
7112                 return;
7113         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7114 }
7115
7116
7117 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7118                                        int group_added)
7119 {
7120         struct wpa_supplicant *group = wpa_s;
7121         int ret = 0;
7122
7123         if (wpa_s->global->p2p_group_formation)
7124                 group = wpa_s->global->p2p_group_formation;
7125         wpa_s = wpa_s->global->p2p_init_wpa_s;
7126         offchannel_send_action_done(wpa_s);
7127         if (group_added)
7128                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7129         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7130         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7131                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7132                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7133                          wpa_s->p2p_persistent_id,
7134                          wpa_s->p2p_pd_before_go_neg,
7135                          wpa_s->p2p_go_ht40,
7136                          wpa_s->p2p_go_vht);
7137         return ret;
7138 }
7139
7140
7141 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7142 {
7143         int res;
7144
7145         if (!wpa_s->p2p_fallback_to_go_neg ||
7146             wpa_s->p2p_in_provisioning <= 5)
7147                 return 0;
7148
7149         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7150                 return 0; /* peer operating as a GO */
7151
7152         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7153                 "fallback to GO Negotiation");
7154         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7155                        "reason=GO-not-found");
7156         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7157
7158         return res == 1 ? 2 : 1;
7159 }
7160
7161
7162 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7163 {
7164         struct wpa_supplicant *ifs;
7165
7166         if (wpa_s->wpa_state > WPA_SCANNING) {
7167                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7168                         "concurrent operation",
7169                         wpa_s->conf->p2p_search_delay);
7170                 return wpa_s->conf->p2p_search_delay;
7171         }
7172
7173         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7174                          radio_list) {
7175                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7176                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7177                                 "delay due to concurrent operation on "
7178                                 "interface %s",
7179                                 wpa_s->conf->p2p_search_delay,
7180                                 ifs->ifname);
7181                         return wpa_s->conf->p2p_search_delay;
7182                 }
7183         }
7184
7185         return 0;
7186 }
7187
7188
7189 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7190                                      struct wpa_ssid *s, const u8 *addr,
7191                                      int iface_addr)
7192 {
7193         struct psk_list_entry *psk, *tmp;
7194         int changed = 0;
7195
7196         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7197                               list) {
7198                 if ((iface_addr && !psk->p2p &&
7199                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7200                     (!iface_addr && psk->p2p &&
7201                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7202                         wpa_dbg(wpa_s, MSG_DEBUG,
7203                                 "P2P: Remove persistent group PSK list entry for "
7204                                 MACSTR " p2p=%u",
7205                                 MAC2STR(psk->addr), psk->p2p);
7206                         dl_list_del(&psk->list);
7207                         os_free(psk);
7208                         changed++;
7209                 }
7210         }
7211
7212         return changed;
7213 }
7214
7215
7216 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7217                          const u8 *p2p_dev_addr,
7218                          const u8 *psk, size_t psk_len)
7219 {
7220         struct wpa_ssid *ssid = wpa_s->current_ssid;
7221         struct wpa_ssid *persistent;
7222         struct psk_list_entry *p, *last;
7223
7224         if (psk_len != sizeof(p->psk))
7225                 return;
7226
7227         if (p2p_dev_addr) {
7228                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7229                         " p2p_dev_addr=" MACSTR,
7230                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7231                 if (is_zero_ether_addr(p2p_dev_addr))
7232                         p2p_dev_addr = NULL;
7233         } else {
7234                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7235                         MAC2STR(mac_addr));
7236         }
7237
7238         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7239                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7240                 /* To be added to persistent group once created */
7241                 if (wpa_s->global->add_psk == NULL) {
7242                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7243                         if (wpa_s->global->add_psk == NULL)
7244                                 return;
7245                 }
7246                 p = wpa_s->global->add_psk;
7247                 if (p2p_dev_addr) {
7248                         p->p2p = 1;
7249                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7250                 } else {
7251                         p->p2p = 0;
7252                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7253                 }
7254                 os_memcpy(p->psk, psk, psk_len);
7255                 return;
7256         }
7257
7258         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7259                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7260                 return;
7261         }
7262
7263         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7264                                              ssid->ssid_len);
7265         if (!persistent) {
7266                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7267                 return;
7268         }
7269
7270         p = os_zalloc(sizeof(*p));
7271         if (p == NULL)
7272                 return;
7273         if (p2p_dev_addr) {
7274                 p->p2p = 1;
7275                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7276         } else {
7277                 p->p2p = 0;
7278                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7279         }
7280         os_memcpy(p->psk, psk, psk_len);
7281
7282         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7283             (last = dl_list_last(&persistent->psk_list,
7284                                  struct psk_list_entry, list))) {
7285                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7286                         MACSTR " (p2p=%u) to make room for a new one",
7287                         MAC2STR(last->addr), last->p2p);
7288                 dl_list_del(&last->list);
7289                 os_free(last);
7290         }
7291
7292         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7293                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7294                                   p2p_dev_addr == NULL);
7295         if (p2p_dev_addr) {
7296                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7297                         MACSTR, MAC2STR(p2p_dev_addr));
7298         } else {
7299                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7300                         MAC2STR(mac_addr));
7301         }
7302         dl_list_add(&persistent->psk_list, &p->list);
7303
7304         if (wpa_s->parent->conf->update_config &&
7305             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7306                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7307 }
7308
7309
7310 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7311                                 struct wpa_ssid *s, const u8 *addr,
7312                                 int iface_addr)
7313 {
7314         int res;
7315
7316         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7317         if (res > 0 && wpa_s->conf->update_config &&
7318             wpa_config_write(wpa_s->confname, wpa_s->conf))
7319                 wpa_dbg(wpa_s, MSG_DEBUG,
7320                         "P2P: Failed to update configuration");
7321 }
7322
7323
7324 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7325                                       const u8 *peer, int iface_addr)
7326 {
7327         struct hostapd_data *hapd;
7328         struct hostapd_wpa_psk *psk, *prev, *rem;
7329         struct sta_info *sta;
7330
7331         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7332             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7333                 return;
7334
7335         /* Remove per-station PSK entry */
7336         hapd = wpa_s->ap_iface->bss[0];
7337         prev = NULL;
7338         psk = hapd->conf->ssid.wpa_psk;
7339         while (psk) {
7340                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7341                     (!iface_addr &&
7342                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7343                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7344                                 MACSTR " iface_addr=%d",
7345                                 MAC2STR(peer), iface_addr);
7346                         if (prev)
7347                                 prev->next = psk->next;
7348                         else
7349                                 hapd->conf->ssid.wpa_psk = psk->next;
7350                         rem = psk;
7351                         psk = psk->next;
7352                         os_free(rem);
7353                 } else {
7354                         prev = psk;
7355                         psk = psk->next;
7356                 }
7357         }
7358
7359         /* Disconnect from group */
7360         if (iface_addr)
7361                 sta = ap_get_sta(hapd, peer);
7362         else
7363                 sta = ap_get_sta_p2p(hapd, peer);
7364         if (sta) {
7365                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7366                         " (iface_addr=%d) from group",
7367                         MAC2STR(peer), iface_addr);
7368                 hostapd_drv_sta_deauth(hapd, sta->addr,
7369                                        WLAN_REASON_DEAUTH_LEAVING);
7370                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7371         }
7372 }
7373
7374
7375 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7376                             int iface_addr)
7377 {
7378         struct wpa_ssid *s;
7379         struct wpa_supplicant *w;
7380         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7381
7382         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7383
7384         /* Remove from any persistent group */
7385         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7386                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7387                         continue;
7388                 if (!iface_addr)
7389                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7390                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7391         }
7392
7393         /* Remove from any operating group */
7394         for (w = wpa_s->global->ifaces; w; w = w->next)
7395                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7396 }
7397
7398
7399 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7400 {
7401         struct wpa_supplicant *wpa_s = eloop_ctx;
7402         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7403 }
7404
7405
7406 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7407 {
7408         struct wpa_supplicant *wpa_s = eloop_ctx;
7409
7410         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7411         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7412 }
7413
7414
7415 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7416                                         struct wpa_ssid *ssid)
7417 {
7418         struct wpa_supplicant *iface;
7419
7420         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7421                 if (!iface->current_ssid ||
7422                     iface->current_ssid->frequency == freq ||
7423                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7424                      !iface->current_ssid->p2p_group))
7425                         continue;
7426
7427                 /* Remove the connection with least priority */
7428                 if (!wpas_is_p2p_prioritized(iface)) {
7429                         /* STA connection has priority over existing
7430                          * P2P connection, so remove the interface. */
7431                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7432                         eloop_register_timeout(0, 0,
7433                                                wpas_p2p_group_freq_conflict,
7434                                                iface, NULL);
7435                         /* If connection in progress is P2P connection, do not
7436                          * proceed for the connection. */
7437                         if (wpa_s == iface)
7438                                 return -1;
7439                         else
7440                                 return 0;
7441                 } else {
7442                         /* P2P connection has priority, disable the STA network
7443                          */
7444                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7445                                                        ssid);
7446                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7447                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7448                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7449                                   ETH_ALEN);
7450                         /* If P2P connection is in progress, continue
7451                          * connecting...*/
7452                         if (wpa_s == iface)
7453                                 return 0;
7454                         else
7455                                 return -1;
7456                 }
7457         }
7458
7459         return 0;
7460 }
7461
7462
7463 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7464 {
7465         struct wpa_ssid *ssid = wpa_s->current_ssid;
7466
7467         if (ssid == NULL || !ssid->p2p_group)
7468                 return 0;
7469
7470         if (wpa_s->p2p_last_4way_hs_fail &&
7471             wpa_s->p2p_last_4way_hs_fail == ssid) {
7472                 u8 go_dev_addr[ETH_ALEN];
7473                 struct wpa_ssid *persistent;
7474
7475                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7476                                               ssid->ssid,
7477                                               ssid->ssid_len) <= 0) {
7478                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7479                         goto disconnect;
7480                 }
7481
7482                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7483                         MACSTR, MAC2STR(go_dev_addr));
7484                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7485                                                      ssid->ssid,
7486                                                      ssid->ssid_len);
7487                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7488                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7489                         goto disconnect;
7490                 }
7491                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7492                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7493                                persistent->id);
7494         disconnect:
7495                 wpa_s->p2p_last_4way_hs_fail = NULL;
7496                 /*
7497                  * Remove the group from a timeout to avoid issues with caller
7498                  * continuing to use the interface if this is on a P2P group
7499                  * interface.
7500                  */
7501                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7502                                        wpa_s, NULL);
7503                 return 1;
7504         }
7505
7506         wpa_s->p2p_last_4way_hs_fail = ssid;
7507         return 0;
7508 }
7509
7510
7511 #ifdef CONFIG_WPS_NFC
7512
7513 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7514                                              struct wpabuf *p2p)
7515 {
7516         struct wpabuf *ret;
7517         size_t wsc_len;
7518
7519         if (p2p == NULL) {
7520                 wpabuf_free(wsc);
7521                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7522                 return NULL;
7523         }
7524
7525         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7526         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7527         if (ret == NULL) {
7528                 wpabuf_free(wsc);
7529                 wpabuf_free(p2p);
7530                 return NULL;
7531         }
7532
7533         wpabuf_put_be16(ret, wsc_len);
7534         if (wsc)
7535                 wpabuf_put_buf(ret, wsc);
7536         wpabuf_put_be16(ret, wpabuf_len(p2p));
7537         wpabuf_put_buf(ret, p2p);
7538
7539         wpabuf_free(wsc);
7540         wpabuf_free(p2p);
7541         wpa_hexdump_buf(MSG_DEBUG,
7542                         "P2P: Generated NFC connection handover message", ret);
7543
7544         if (ndef && ret) {
7545                 struct wpabuf *tmp;
7546                 tmp = ndef_build_p2p(ret);
7547                 wpabuf_free(ret);
7548                 if (tmp == NULL) {
7549                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7550                         return NULL;
7551                 }
7552                 ret = tmp;
7553         }
7554
7555         return ret;
7556 }
7557
7558
7559 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7560                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7561 {
7562         struct wpa_supplicant *iface;
7563
7564         if (go_dev_addr)
7565                 os_memset(go_dev_addr, 0, ETH_ALEN);
7566         if (ssid)
7567                 *ssid = NULL;
7568         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7569                 if (iface->wpa_state < WPA_ASSOCIATING ||
7570                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7571                     !iface->current_ssid->p2p_group ||
7572                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7573                         continue;
7574                 if (ssid)
7575                         *ssid = iface->current_ssid;
7576                 if (go_dev_addr)
7577                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7578                 return iface->assoc_freq;
7579         }
7580         return 0;
7581 }
7582
7583
7584 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7585                                           int ndef)
7586 {
7587         struct wpabuf *wsc, *p2p;
7588         struct wpa_ssid *ssid;
7589         u8 go_dev_addr[ETH_ALEN];
7590         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7591
7592         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7593                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7594                 return NULL;
7595         }
7596
7597         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7598             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7599                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7600                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7601                 return NULL;
7602         }
7603
7604         if (cli_freq == 0) {
7605                 wsc = wps_build_nfc_handover_req_p2p(
7606                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7607         } else
7608                 wsc = NULL;
7609         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7610                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7611                                          ssid ? ssid->ssid_len : 0);
7612
7613         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7614 }
7615
7616
7617 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7618                                           int ndef, int tag)
7619 {
7620         struct wpabuf *wsc, *p2p;
7621         struct wpa_ssid *ssid;
7622         u8 go_dev_addr[ETH_ALEN];
7623         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7624
7625         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7626                 return NULL;
7627
7628         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7629             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7630                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7631                 return NULL;
7632
7633         if (cli_freq == 0) {
7634                 wsc = wps_build_nfc_handover_sel_p2p(
7635                         wpa_s->parent->wps,
7636                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7637                         DEV_PW_NFC_CONNECTION_HANDOVER,
7638                         wpa_s->conf->wps_nfc_dh_pubkey,
7639                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7640         } else
7641                 wsc = NULL;
7642         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7643                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7644                                          ssid ? ssid->ssid_len : 0);
7645
7646         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7647 }
7648
7649
7650 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7651                                    struct p2p_nfc_params *params)
7652 {
7653         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7654                    "connection handover (freq=%d)",
7655                    params->go_freq);
7656
7657         if (params->go_freq && params->go_ssid_len) {
7658                 wpa_s->p2p_wps_method = WPS_NFC;
7659                 wpa_s->pending_join_wps_method = WPS_NFC;
7660                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7661                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7662                           ETH_ALEN);
7663                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7664                                            params->go_ssid,
7665                                            params->go_ssid_len);
7666         }
7667
7668         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7669                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7670                                 params->go_freq, -1, 0, 1, 1);
7671 }
7672
7673
7674 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7675                                   struct p2p_nfc_params *params, int tag)
7676 {
7677         int res, persistent;
7678         struct wpa_ssid *ssid;
7679
7680         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7681                    "connection handover");
7682         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7683                 ssid = wpa_s->current_ssid;
7684                 if (ssid == NULL)
7685                         continue;
7686                 if (ssid->mode != WPAS_MODE_P2P_GO)
7687                         continue;
7688                 if (wpa_s->ap_iface == NULL)
7689                         continue;
7690                 break;
7691         }
7692         if (wpa_s == NULL) {
7693                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7694                 return -1;
7695         }
7696
7697         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7698             DEV_PW_NFC_CONNECTION_HANDOVER &&
7699             !wpa_s->parent->p2p_oob_dev_pw) {
7700                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7701                 return -1;
7702         }
7703         res = wpas_ap_wps_add_nfc_pw(
7704                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7705                 wpa_s->parent->p2p_oob_dev_pw,
7706                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7707                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7708         if (res)
7709                 return res;
7710
7711         if (!tag) {
7712                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7713                 return 0;
7714         }
7715
7716         if (!params->peer ||
7717             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7718                 return 0;
7719
7720         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7721                    " to join", MAC2STR(params->peer->p2p_device_addr));
7722
7723         wpa_s->global->p2p_invite_group = wpa_s;
7724         persistent = ssid->p2p_persistent_group &&
7725                 wpas_p2p_get_persistent(wpa_s->parent,
7726                                         params->peer->p2p_device_addr,
7727                                         ssid->ssid, ssid->ssid_len);
7728         wpa_s->parent->pending_invite_ssid_id = -1;
7729
7730         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7731                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7732                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7733                           wpa_s->global->p2p_dev_addr, persistent, 0,
7734                           wpa_s->parent->p2p_oob_dev_pw_id);
7735 }
7736
7737
7738 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7739                                     struct p2p_nfc_params *params,
7740                                     int forced_freq)
7741 {
7742         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7743                    "connection handover");
7744         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7745                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7746                                 forced_freq, -1, 0, 1, 1);
7747 }
7748
7749
7750 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7751                                     struct p2p_nfc_params *params,
7752                                     int forced_freq)
7753 {
7754         int res;
7755
7756         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7757                    "connection handover");
7758         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7759                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7760                                forced_freq, -1, 0, 1, 1);
7761         if (res)
7762                 return res;
7763
7764         res = wpas_p2p_listen(wpa_s, 60);
7765         if (res) {
7766                 p2p_unauthorize(wpa_s->global->p2p,
7767                                 params->peer->p2p_device_addr);
7768         }
7769
7770         return res;
7771 }
7772
7773
7774 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7775                                             const struct wpabuf *data,
7776                                             int sel, int tag, int forced_freq)
7777 {
7778         const u8 *pos, *end;
7779         u16 len, id;
7780         struct p2p_nfc_params params;
7781         int res;
7782
7783         os_memset(&params, 0, sizeof(params));
7784         params.sel = sel;
7785
7786         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7787
7788         pos = wpabuf_head(data);
7789         end = pos + wpabuf_len(data);
7790
7791         if (end - pos < 2) {
7792                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7793                            "attributes");
7794                 return -1;
7795         }
7796         len = WPA_GET_BE16(pos);
7797         pos += 2;
7798         if (len > end - pos) {
7799                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7800                            "attributes");
7801                 return -1;
7802         }
7803         params.wsc_attr = pos;
7804         params.wsc_len = len;
7805         pos += len;
7806
7807         if (end - pos < 2) {
7808                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7809                            "attributes");
7810                 return -1;
7811         }
7812         len = WPA_GET_BE16(pos);
7813         pos += 2;
7814         if (len > end - pos) {
7815                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7816                            "attributes");
7817                 return -1;
7818         }
7819         params.p2p_attr = pos;
7820         params.p2p_len = len;
7821         pos += len;
7822
7823         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7824                     params.wsc_attr, params.wsc_len);
7825         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7826                     params.p2p_attr, params.p2p_len);
7827         if (pos < end) {
7828                 wpa_hexdump(MSG_DEBUG,
7829                             "P2P: Ignored extra data after P2P attributes",
7830                             pos, end - pos);
7831         }
7832
7833         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7834         if (res)
7835                 return res;
7836
7837         if (params.next_step == NO_ACTION)
7838                 return 0;
7839
7840         if (params.next_step == BOTH_GO) {
7841                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7842                         MAC2STR(params.peer->p2p_device_addr));
7843                 return 0;
7844         }
7845
7846         if (params.next_step == PEER_CLIENT) {
7847                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7848                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7849                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7850                                 " ssid=\"%s\"",
7851                                 MAC2STR(params.peer->p2p_device_addr),
7852                                 params.go_freq,
7853                                 MAC2STR(params.go_dev_addr),
7854                                 wpa_ssid_txt(params.go_ssid,
7855                                              params.go_ssid_len));
7856                 } else {
7857                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7858                                 "peer=" MACSTR " freq=%d",
7859                                 MAC2STR(params.peer->p2p_device_addr),
7860                                 params.go_freq);
7861                 }
7862                 return 0;
7863         }
7864
7865         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7866                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7867                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7868                 return 0;
7869         }
7870
7871         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7872         wpa_s->p2p_oob_dev_pw = NULL;
7873
7874         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7875                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7876                            "received");
7877                 return -1;
7878         }
7879
7880         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7881         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7882         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7883                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7884         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7885                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7886         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7887
7888         if (tag) {
7889                 if (id < 0x10) {
7890                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7891                                    "peer OOB Device Password Id %u", id);
7892                         return -1;
7893                 }
7894                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7895                            "Device Password Id %u", id);
7896                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7897                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7898                                 params.oob_dev_pw_len -
7899                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7900                 wpa_s->p2p_oob_dev_pw_id = id;
7901                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7902                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7903                         params.oob_dev_pw_len -
7904                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7905                 if (wpa_s->p2p_oob_dev_pw == NULL)
7906                         return -1;
7907
7908                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7909                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7910                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7911                         return -1;
7912         } else {
7913                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7914                            "without Device Password");
7915                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7916         }
7917
7918         switch (params.next_step) {
7919         case NO_ACTION:
7920         case BOTH_GO:
7921         case PEER_CLIENT:
7922                 /* already covered above */
7923                 return 0;
7924         case JOIN_GROUP:
7925                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7926         case AUTH_JOIN:
7927                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7928         case INIT_GO_NEG:
7929                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7930         case RESP_GO_NEG:
7931                 /* TODO: use own OOB Dev Pw */
7932                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7933         }
7934
7935         return -1;
7936 }
7937
7938
7939 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7940                              const struct wpabuf *data, int forced_freq)
7941 {
7942         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7943                 return -1;
7944
7945         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7946 }
7947
7948
7949 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7950                                  const struct wpabuf *req,
7951                                  const struct wpabuf *sel, int forced_freq)
7952 {
7953         struct wpabuf *tmp;
7954         int ret;
7955
7956         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7957                 return -1;
7958
7959         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7960
7961         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7962                           wpabuf_head(req), wpabuf_len(req));
7963         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7964                           wpabuf_head(sel), wpabuf_len(sel));
7965         if (forced_freq)
7966                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7967         tmp = ndef_parse_p2p(init ? sel : req);
7968         if (tmp == NULL) {
7969                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7970                 return -1;
7971         }
7972
7973         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7974                                                forced_freq);
7975         wpabuf_free(tmp);
7976
7977         return ret;
7978 }
7979
7980
7981 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7982 {
7983         const u8 *if_addr;
7984         int go_intent = wpa_s->conf->p2p_go_intent;
7985         struct wpa_supplicant *iface;
7986
7987         if (wpa_s->global->p2p == NULL)
7988                 return -1;
7989
7990         if (!enabled) {
7991                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7992                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7993                 {
7994                         if (!iface->ap_iface)
7995                                 continue;
7996                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7997                 }
7998                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7999                                                  0, NULL);
8000                 if (wpa_s->p2p_nfc_tag_enabled)
8001                         wpas_p2p_remove_pending_group_interface(wpa_s);
8002                 wpa_s->p2p_nfc_tag_enabled = 0;
8003                 return 0;
8004         }
8005
8006         if (wpa_s->global->p2p_disabled)
8007                 return -1;
8008
8009         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8010             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8011             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8012             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8013                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8014                            "to allow static handover cases");
8015                 return -1;
8016         }
8017
8018         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8019
8020         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8021         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8022         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8023         if (wpa_s->p2p_oob_dev_pw == NULL)
8024                 return -1;
8025         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8026
8027         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8028             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8029                 /*
8030                  * P2P Group Interface present and the command came on group
8031                  * interface, so enable the token for the current interface.
8032                  */
8033                 wpa_s->create_p2p_iface = 0;
8034         } else {
8035                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8036         }
8037
8038         if (wpa_s->create_p2p_iface) {
8039                 enum wpa_driver_if_type iftype;
8040                 /* Prepare to add a new interface for the group */
8041                 iftype = WPA_IF_P2P_GROUP;
8042                 if (go_intent == 15)
8043                         iftype = WPA_IF_P2P_GO;
8044                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8045                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8046                                    "interface for the group");
8047                         return -1;
8048                 }
8049
8050                 if_addr = wpa_s->pending_interface_addr;
8051         } else
8052                 if_addr = wpa_s->own_addr;
8053
8054         wpa_s->p2p_nfc_tag_enabled = enabled;
8055
8056         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8057                 struct hostapd_data *hapd;
8058                 if (iface->ap_iface == NULL)
8059                         continue;
8060                 hapd = iface->ap_iface->bss[0];
8061                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8062                 hapd->conf->wps_nfc_dh_pubkey =
8063                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8064                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8065                 hapd->conf->wps_nfc_dh_privkey =
8066                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8067                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8068                 hapd->conf->wps_nfc_dev_pw =
8069                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8070                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8071
8072                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8073                         wpa_dbg(iface, MSG_DEBUG,
8074                                 "P2P: Failed to enable NFC Tag for GO");
8075                 }
8076         }
8077         p2p_set_authorized_oob_dev_pw_id(
8078                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8079                 if_addr);
8080
8081         return 0;
8082 }
8083
8084 #endif /* CONFIG_WPS_NFC */
8085
8086
8087 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8088                                              struct wpa_used_freq_data *freqs,
8089                                              unsigned int num)
8090 {
8091         u8 curr_chan, cand, chan;
8092         unsigned int i;
8093
8094         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8095         for (i = 0, cand = 0; i < num; i++) {
8096                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8097                 if (curr_chan == chan) {
8098                         cand = 0;
8099                         break;
8100                 }
8101
8102                 if (chan == 1 || chan == 6 || chan == 11)
8103                         cand = chan;
8104         }
8105
8106         if (cand) {
8107                 wpa_dbg(wpa_s, MSG_DEBUG,
8108                         "P2P: Update Listen channel to %u based on operating channel",
8109                         cand);
8110                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8111         }
8112 }
8113
8114
8115 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8116 {
8117         struct wpa_used_freq_data *freqs;
8118         unsigned int num = wpa_s->num_multichan_concurrent;
8119
8120         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8121                 return;
8122
8123         /*
8124          * If possible, optimize the Listen channel to be a channel that is
8125          * already used by one of the other interfaces.
8126          */
8127         if (!wpa_s->conf->p2p_optimize_listen_chan)
8128                 return;
8129
8130         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8131                 return;
8132
8133         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8134         if (!freqs)
8135                 return;
8136
8137         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8138
8139         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8140         os_free(freqs);
8141 }
8142
8143
8144 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8145 {
8146         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8147                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8148                         "the management interface is being removed");
8149                 wpas_p2p_deinit_global(wpa_s->global);
8150         }
8151 }
8152
8153
8154 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8155 {
8156         if (wpa_s->ap_iface->bss)
8157                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8158         wpas_p2p_group_deinit(wpa_s);
8159 }