wpa_supplicant/p2p_supplicant.c

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