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