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