wpa_supplicant/p2p_supplicant.c

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