wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 #ifndef P2P_MAX_CLIENT_IDLE
  51 /*
  52  * How many seconds to try to reconnect to the GO when connection in P2P client
  53  * role has been lost.
  54  */
  55 #define P2P_MAX_CLIENT_IDLE 10
  56 #endif /* P2P_MAX_CLIENT_IDLE */
  57
  58 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  59 /*
  60  * How many seconds to wait for initial 4-way handshake to get completed after
  61  * WPS provisioning step or after the re-invocation of a persistent group on a
  62  * P2P Client.
  63  */
  64 #define P2P_MAX_INITIAL_CONN_WAIT 10
  65 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  66
  67 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  68 /*
  69  * How many seconds to wait for initial 4-way handshake to get completed after
  70  * WPS provisioning step on the GO. This controls the extra time the P2P
  71  * operation is considered to be in progress (e.g., to delay other scans) after
  72  * WPS provisioning has been completed on the GO during group formation.
  73  */
  74 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  75 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  76
  77 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  78 /*
  79  * How many seconds to wait for initial 4-way handshake to get completed after
  80  * re-invocation of a persistent group on the GO when the client is expected
  81  * to connect automatically (no user interaction).
  82  */
  83 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  84 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  85
  86 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  87
  88 enum p2p_group_removal_reason {
  89         P2P_GROUP_REMOVAL_UNKNOWN,
  90         P2P_GROUP_REMOVAL_SILENT,
  91         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  92         P2P_GROUP_REMOVAL_REQUESTED,
  93         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  94         P2P_GROUP_REMOVAL_UNAVAILABLE,
  95         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  96         P2P_GROUP_REMOVAL_PSK_FAILURE,
  97         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  98 };
  99
 100
 101 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 102 static struct wpa_supplicant *
 103 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 104                          int go);
 105 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 106                                const u8 *ssid, size_t ssid_len);
 107 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 108                                    const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 110 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 111                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 112                          int auto_join, int freq,
 113                          const u8 *ssid, size_t ssid_len);
 114 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 116 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 117 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 119                                              void *timeout_ctx);
 120 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 121 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 122                                        int group_added);
 123 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 124 static void wpas_stop_listen(void *ctx);
 125 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 126 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 127 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 128                                         enum wpa_driver_if_type type);
 129 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 130                                             int already_deleted);
 131
 132
 133 /*
 134  * Get the number of concurrent channels that the HW can operate, but that are
 135  * currently not in use by any of the wpa_supplicant interfaces.
 136  */
 137 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 138 {
 139         int *freqs;
 140         int num, unused;
 141
 142         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 143         if (!freqs)
 144                 return -1;
 145
 146         num = get_shared_radio_freqs(wpa_s, freqs,
 147                                      wpa_s->num_multichan_concurrent);
 148         os_free(freqs);
 149
 150         unused = wpa_s->num_multichan_concurrent - num;
 151         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 152         return unused;
 153 }
 154
 155
 156 /*
 157  * Get the frequencies that are currently in use by one or more of the virtual
 158  * interfaces, and that are also valid for P2P operation.
 159  */
 160 static unsigned int
 161 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 162                           struct wpa_used_freq_data *p2p_freqs,
 163                           unsigned int len)
 164 {
 165         struct wpa_used_freq_data *freqs;
 166         unsigned int num, i, j;
 167
 168         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 169                           sizeof(struct wpa_used_freq_data));
 170         if (!freqs)
 171                 return 0;
 172
 173         num = get_shared_radio_freqs_data(wpa_s, freqs,
 174                                           wpa_s->num_multichan_concurrent);
 175
 176         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 177
 178         for (i = 0, j = 0; i < num && j < len; i++) {
 179                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 180                         p2p_freqs[j++] = freqs[i];
 181         }
 182
 183         os_free(freqs);
 184
 185         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 186
 187         return j;
 188 }
 189
 190
 191 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 192                                              int freq)
 193 {
 194         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 195                 return;
 196
 197         /* Use the wpa_s used to control the P2P Device operation */
 198         wpa_s = wpa_s->global->p2p_init_wpa_s;
 199
 200         if (wpa_s->conf->p2p_ignore_shared_freq &&
 201             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 202             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 203                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 204                            freq);
 205                 freq = 0;
 206         }
 207         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 208 }
 209
 210
 211 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 212                                       struct wpa_scan_results *scan_res)
 213 {
 214         size_t i;
 215
 216         if (wpa_s->p2p_scan_work) {
 217                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 218                 wpa_s->p2p_scan_work = NULL;
 219                 radio_work_done(work);
 220         }
 221
 222         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 223                 return;
 224
 225         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 226                    (int) scan_res->num);
 227
 228         for (i = 0; i < scan_res->num; i++) {
 229                 struct wpa_scan_res *bss = scan_res->res[i];
 230                 struct os_reltime time_tmp_age, entry_ts;
 231                 const u8 *ies;
 232                 size_t ies_len;
 233
 234                 time_tmp_age.sec = bss->age / 1000;
 235                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 236                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 237
 238                 ies = (const u8 *) (bss + 1);
 239                 ies_len = bss->ie_len;
 240                 if (bss->beacon_ie_len > 0 &&
 241                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 242                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 243                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 244                                    MACSTR, MAC2STR(bss->bssid));
 245                         ies = ies + ies_len;
 246                         ies_len = bss->beacon_ie_len;
 247                 }
 248
 249
 250                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 251                                          bss->freq, &entry_ts, bss->level,
 252                                          ies, ies_len) > 0)
 253                         break;
 254         }
 255
 256         p2p_scan_res_handled(wpa_s->global->p2p);
 257 }
 258
 259
 260 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 261 {
 262         struct wpa_supplicant *wpa_s = work->wpa_s;
 263         struct wpa_driver_scan_params *params = work->ctx;
 264         int ret;
 265
 266         if (deinit) {
 267                 if (!work->started) {
 268                         wpa_scan_free_params(params);
 269                         return;
 270                 }
 271
 272                 wpa_s->p2p_scan_work = NULL;
 273                 return;
 274         }
 275
 276         ret = wpa_drv_scan(wpa_s, params);
 277         wpa_scan_free_params(params);
 278         work->ctx = NULL;
 279         if (ret) {
 280                 radio_work_done(work);
 281                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 282                 return;
 283         }
 284
 285         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 286         os_get_reltime(&wpa_s->scan_trigger_time);
 287         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 288         wpa_s->own_scan_requested = 1;
 289         wpa_s->p2p_scan_work = work;
 290 }
 291
 292
 293 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 294                                           int freq)
 295 {
 296         if (wpa_s->global->p2p_24ghz_social_channels &&
 297             (freq == 2412 || freq == 2437 || freq == 2462)) {
 298                 /*
 299                  * Search all social channels regardless of whether these have
 300                  * been disabled for P2P operating channel use to avoid missing
 301                  * peers.
 302                  */
 303                 return 1;
 304         }
 305         return p2p_supported_freq(wpa_s->global->p2p, freq);
 306 }
 307
 308
 309 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 310                          unsigned int num_req_dev_types,
 311                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 312 {
 313         struct wpa_supplicant *wpa_s = ctx;
 314         struct wpa_driver_scan_params *params = NULL;
 315         struct wpabuf *wps_ie, *ies;
 316         unsigned int num_channels = 0;
 317         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 318         size_t ielen;
 319         u8 *n, i;
 320
 321         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 322                 return -1;
 323
 324         if (wpa_s->p2p_scan_work) {
 325                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 326                 return -1;
 327         }
 328
 329         params = os_zalloc(sizeof(*params));
 330         if (params == NULL)
 331                 return -1;
 332
 333         /* P2P Wildcard SSID */
 334         params->num_ssids = 1;
 335         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 336         if (n == NULL)
 337                 goto fail;
 338         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 339         params->ssids[0].ssid = n;
 340         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 341
 342         wpa_s->wps->dev.p2p = 1;
 343         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 344                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 345                                         num_req_dev_types, req_dev_types);
 346         if (wps_ie == NULL)
 347                 goto fail;
 348
 349         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 350         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 351         if (ies == NULL) {
 352                 wpabuf_free(wps_ie);
 353                 goto fail;
 354         }
 355         wpabuf_put_buf(ies, wps_ie);
 356         wpabuf_free(wps_ie);
 357
 358         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 359
 360         params->p2p_probe = 1;
 361         n = os_malloc(wpabuf_len(ies));
 362         if (n == NULL) {
 363                 wpabuf_free(ies);
 364                 goto fail;
 365         }
 366         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 367         params->extra_ies = n;
 368         params->extra_ies_len = wpabuf_len(ies);
 369         wpabuf_free(ies);
 370
 371         switch (type) {
 372         case P2P_SCAN_SOCIAL:
 373                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 374                                           sizeof(int));
 375                 if (params->freqs == NULL)
 376                         goto fail;
 377                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 378                         if (wpas_p2p_search_social_channel(
 379                                     wpa_s, social_channels_freq[i]))
 380                                 params->freqs[num_channels++] =
 381                                         social_channels_freq[i];
 382                 }
 383                 params->freqs[num_channels++] = 0;
 384                 break;
 385         case P2P_SCAN_FULL:
 386                 break;
 387         case P2P_SCAN_SPECIFIC:
 388                 params->freqs = os_calloc(2, sizeof(int));
 389                 if (params->freqs == NULL)
 390                         goto fail;
 391                 params->freqs[0] = freq;
 392                 params->freqs[1] = 0;
 393                 break;
 394         case P2P_SCAN_SOCIAL_PLUS_ONE:
 395                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 396                                           sizeof(int));
 397                 if (params->freqs == NULL)
 398                         goto fail;
 399                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 400                         if (wpas_p2p_search_social_channel(
 401                                     wpa_s, social_channels_freq[i]))
 402                                 params->freqs[num_channels++] =
 403                                         social_channels_freq[i];
 404                 }
 405                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 406                         params->freqs[num_channels++] = freq;
 407                 params->freqs[num_channels++] = 0;
 408                 break;
 409         }
 410
 411         radio_remove_works(wpa_s, "p2p-scan", 0);
 412         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 413                            params) < 0)
 414                 goto fail;
 415         return 0;
 416
 417 fail:
 418         wpa_scan_free_params(params);
 419         return -1;
 420 }
 421
 422
 423 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 424 {
 425         switch (p2p_group_interface) {
 426         case P2P_GROUP_INTERFACE_PENDING:
 427                 return WPA_IF_P2P_GROUP;
 428         case P2P_GROUP_INTERFACE_GO:
 429                 return WPA_IF_P2P_GO;
 430         case P2P_GROUP_INTERFACE_CLIENT:
 431                 return WPA_IF_P2P_CLIENT;
 432         }
 433
 434         return WPA_IF_P2P_GROUP;
 435 }
 436
 437
 438 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 439                                                   const u8 *ssid,
 440                                                   size_t ssid_len, int *go)
 441 {
 442         struct wpa_ssid *s;
 443
 444         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 445                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 446                         if (s->disabled != 0 || !s->p2p_group ||
 447                             s->ssid_len != ssid_len ||
 448                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 449                                 continue;
 450                         if (s->mode == WPAS_MODE_P2P_GO &&
 451                             s != wpa_s->current_ssid)
 452                                 continue;
 453                         if (go)
 454                                 *go = s->mode == WPAS_MODE_P2P_GO;
 455                         return wpa_s;
 456                 }
 457         }
 458
 459         return NULL;
 460 }
 461
 462
 463 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 464 {
 465         struct wpa_supplicant *wpa_s = eloop_ctx;
 466         wpa_printf(MSG_DEBUG,
 467                    "P2P: Complete previously requested removal of %s",
 468                    wpa_s->ifname);
 469         wpas_p2p_disconnect(wpa_s);
 470 }
 471
 472
 473 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 474                                       struct wpa_supplicant *calling_wpa_s)
 475 {
 476         if (calling_wpa_s == wpa_s && wpa_s &&
 477             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 478                 /*
 479                  * The calling wpa_s instance is going to be removed. Do that
 480                  * from an eloop callback to keep the instance available until
 481                  * the caller has returned. This my be needed, e.g., to provide
 482                  * control interface responses on the per-interface socket.
 483                  */
 484                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 485                                            wpa_s, NULL) < 0)
 486                         return -1;
 487                 return 0;
 488         }
 489
 490         return wpas_p2p_disconnect(wpa_s);
 491 }
 492
 493
 494 /* Determine total number of clients in active groups where we are the GO */
 495 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 496 {
 497         unsigned int count = 0;
 498         struct wpa_ssid *s;
 499
 500         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 501                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 502                         wpa_printf(MSG_DEBUG,
 503                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 504                                    wpa_s, s, s->disabled, s->p2p_group,
 505                                    s->mode);
 506                         if (!s->disabled && s->p2p_group &&
 507                             s->mode == WPAS_MODE_P2P_GO) {
 508                                 count += p2p_get_group_num_members(
 509                                         wpa_s->p2p_group);
 510                         }
 511                 }
 512         }
 513
 514         return count;
 515 }
 516
 517
 518 /* Find an interface for a P2P group where we are the GO */
 519 static struct wpa_supplicant *
 520 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 521 {
 522         struct wpa_supplicant *save = NULL;
 523         struct wpa_ssid *s;
 524
 525         if (!wpa_s)
 526                 return NULL;
 527
 528         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 529                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 530                         if (s->disabled || !s->p2p_group ||
 531                             s->mode != WPAS_MODE_P2P_GO)
 532                                 continue;
 533
 534                         /* Prefer a group with connected clients */
 535                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 536                                 return wpa_s;
 537                         save = wpa_s;
 538                 }
 539         }
 540
 541         /* No group with connected clients, so pick the one without (if any) */
 542         return save;
 543 }
 544
 545
 546 /* Find an active P2P group where we are the GO */
 547 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 548                                                 u8 *bssid)
 549 {
 550         struct wpa_ssid *s, *empty = NULL;
 551
 552         if (!wpa_s)
 553                 return 0;
 554
 555         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 556                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 557                         if (s->disabled || !s->p2p_group ||
 558                             s->mode != WPAS_MODE_P2P_GO)
 559                                 continue;
 560
 561                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 562                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 563                                 return s;
 564                         empty = s;
 565                 }
 566         }
 567
 568         return empty;
 569 }
 570
 571
 572 /* Find a persistent group where we are the GO */
 573 static struct wpa_ssid *
 574 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 575 {
 576         struct wpa_ssid *s;
 577
 578         for (s = wpa_s->conf->ssid; s; s = s->next) {
 579                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 580                         return s;
 581         }
 582
 583         return NULL;
 584 }
 585
 586
 587 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 588 {
 589         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 590         struct wpa_ssid *s;
 591         u8 conncap = P2PS_SETUP_NONE;
 592         unsigned int owned_members = 0;
 593         unsigned int owner = 0;
 594         unsigned int client = 0;
 595         struct wpa_supplicant *go_wpa_s;
 596         struct wpa_ssid *persistent_go;
 597         int p2p_no_group_iface;
 598
 599         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 600
 601         /*
 602          * For non-concurrent capable devices:
 603          * If persistent_go, then no new.
 604          * If GO, then no client.
 605          * If client, then no GO.
 606          */
 607         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 608         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 609         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 610
 611         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 612                    go_wpa_s, persistent_go);
 613
 614         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 615              tmp_wpa_s = tmp_wpa_s->next) {
 616                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 617                         wpa_printf(MSG_DEBUG,
 618                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 619                                    tmp_wpa_s, s, s->disabled,
 620                                    s->p2p_group, s->mode);
 621                         if (!s->disabled && s->p2p_group) {
 622                                 if (s->mode == WPAS_MODE_P2P_GO) {
 623                                         owned_members +=
 624                                                 p2p_get_group_num_members(
 625                                                         tmp_wpa_s->p2p_group);
 626                                         owner++;
 627                                 } else
 628                                         client++;
 629                         }
 630                 }
 631         }
 632
 633         /* If not concurrent, restrict our choices */
 634         if (p2p_no_group_iface) {
 635                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 636
 637                 if (client)
 638                         return P2PS_SETUP_NONE;
 639
 640                 if (go_wpa_s) {
 641                         if (role == P2PS_SETUP_CLIENT ||
 642                             incoming == P2PS_SETUP_GROUP_OWNER ||
 643                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 644                                 return P2PS_SETUP_NONE;
 645
 646                         return P2PS_SETUP_GROUP_OWNER;
 647                 }
 648
 649                 if (persistent_go) {
 650                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 651                                 if (!incoming)
 652                                         return P2PS_SETUP_GROUP_OWNER |
 653                                                 P2PS_SETUP_CLIENT;
 654                                 if (incoming == P2PS_SETUP_NEW) {
 655                                         u8 r;
 656
 657                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 658                                             (r & 1))
 659                                                 return P2PS_SETUP_CLIENT;
 660                                         return P2PS_SETUP_GROUP_OWNER;
 661                                 }
 662                         }
 663                 }
 664         }
 665
 666         /* If a required role has been specified, handle it here */
 667         if (role && role != P2PS_SETUP_NEW) {
 668                 switch (incoming) {
 669                 case P2PS_SETUP_NONE:
 670                 case P2PS_SETUP_NEW:
 671                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 672                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 673                         conncap = role;
 674                         goto grp_owner;
 675
 676                 case P2PS_SETUP_GROUP_OWNER:
 677                         /*
 678                          * Must be a complimentary role - cannot be a client to
 679                          * more than one peer.
 680                          */
 681                         if (incoming == role || client)
 682                                 return P2PS_SETUP_NONE;
 683
 684                         return P2PS_SETUP_CLIENT;
 685
 686                 case P2PS_SETUP_CLIENT:
 687                         /* Must be a complimentary role */
 688                         if (incoming != role) {
 689                                 conncap = P2PS_SETUP_GROUP_OWNER;
 690                                 goto grp_owner;
 691                         }
 692
 693                 default:
 694                         return P2PS_SETUP_NONE;
 695                 }
 696         }
 697
 698         /*
 699          * For now, we only will support ownership of one group, and being a
 700          * client of one group. Therefore, if we have either an existing GO
 701          * group, or an existing client group, we will not do a new GO
 702          * negotiation, but rather try to re-use the existing groups.
 703          */
 704         switch (incoming) {
 705         case P2PS_SETUP_NONE:
 706         case P2PS_SETUP_NEW:
 707                 if (client)
 708                         conncap = P2PS_SETUP_GROUP_OWNER;
 709                 else if (!owned_members)
 710                         conncap = P2PS_SETUP_NEW;
 711                 else if (incoming == P2PS_SETUP_NONE)
 712                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 713                 else
 714                         conncap = P2PS_SETUP_CLIENT;
 715                 break;
 716
 717         case P2PS_SETUP_CLIENT:
 718                 conncap = P2PS_SETUP_GROUP_OWNER;
 719                 break;
 720
 721         case P2PS_SETUP_GROUP_OWNER:
 722                 if (!client)
 723                         conncap = P2PS_SETUP_CLIENT;
 724                 break;
 725
 726         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 727         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 728                 if (client)
 729                         conncap = P2PS_SETUP_GROUP_OWNER;
 730                 else {
 731                         u8 r;
 732
 733                         if (os_get_random(&r, sizeof(r)) < 0 ||
 734                             (r & 1))
 735                                 conncap = P2PS_SETUP_CLIENT;
 736                         else
 737                                 conncap = P2PS_SETUP_GROUP_OWNER;
 738                 }
 739                 break;
 740
 741         default:
 742                 return P2PS_SETUP_NONE;
 743         }
 744
 745 grp_owner:
 746         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 747             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 748                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 749                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 750                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 751                            owner, owned_members, conncap);
 752
 753                 s = wpas_p2p_get_persistent_go(wpa_s);
 754
 755                 if (!s && !owner && p2p_no_group_iface) {
 756                         p2p_set_intended_addr(wpa_s->global->p2p,
 757                                               wpa_s->own_addr);
 758                 } else if (!s && !owner) {
 759                         if (wpas_p2p_add_group_interface(wpa_s,
 760                                                          WPA_IF_P2P_GO) < 0) {
 761                                 wpa_printf(MSG_ERROR,
 762                                            "P2P: Failed to allocate a new interface for the group");
 763                                 return P2PS_SETUP_NONE;
 764                         }
 765                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 766                         p2p_set_intended_addr(wpa_s->global->p2p,
 767                                               wpa_s->pending_interface_addr);
 768                 }
 769         }
 770
 771         return conncap;
 772 }
 773
 774
 775 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 776                                  enum p2p_group_removal_reason removal_reason)
 777 {
 778         struct wpa_ssid *ssid;
 779         char *gtype;
 780         const char *reason;
 781
 782         ssid = wpa_s->current_ssid;
 783         if (ssid == NULL) {
 784                 /*
 785                  * The current SSID was not known, but there may still be a
 786                  * pending P2P group interface waiting for provisioning or a
 787                  * P2P group that is trying to reconnect.
 788                  */
 789                 ssid = wpa_s->conf->ssid;
 790                 while (ssid) {
 791                         if (ssid->p2p_group && ssid->disabled != 2)
 792                                 break;
 793                         ssid = ssid->next;
 794                 }
 795                 if (ssid == NULL &&
 796                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 797                 {
 798                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 799                                    "not found");
 800                         return -1;
 801                 }
 802         }
 803         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 804                 gtype = "GO";
 805         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 806                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 807                 wpa_s->reassociate = 0;
 808                 wpa_s->disconnected = 1;
 809                 gtype = "client";
 810         } else
 811                 gtype = "GO";
 812
 813         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 814                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 815
 816         if (os_strcmp(gtype, "client") == 0) {
 817                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 818                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 819                                                 wpa_s, NULL)) {
 820                         wpa_printf(MSG_DEBUG,
 821                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 822                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 823                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 824                                              wpa_s, NULL);
 825                 }
 826         }
 827
 828         if (wpa_s->cross_connect_in_use) {
 829                 wpa_s->cross_connect_in_use = 0;
 830                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 831                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 832                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 833         }
 834         switch (removal_reason) {
 835         case P2P_GROUP_REMOVAL_REQUESTED:
 836                 reason = " reason=REQUESTED";
 837                 break;
 838         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 839                 reason = " reason=FORMATION_FAILED";
 840                 break;
 841         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 842                 reason = " reason=IDLE";
 843                 break;
 844         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 845                 reason = " reason=UNAVAILABLE";
 846                 break;
 847         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 848                 reason = " reason=GO_ENDING_SESSION";
 849                 break;
 850         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 851                 reason = " reason=PSK_FAILURE";
 852                 break;
 853         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 854                 reason = " reason=FREQ_CONFLICT";
 855                 break;
 856         default:
 857                 reason = "";
 858                 break;
 859         }
 860         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 861                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 862                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 863                                wpa_s->ifname, gtype, reason);
 864         }
 865
 866         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 867                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 868         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 869                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 870         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 871                                  wpa_s->parent, NULL) > 0) {
 872                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 873                            "timeout");
 874                 wpa_s->p2p_in_provisioning = 0;
 875         }
 876
 877         wpa_s->p2p_in_invitation = 0;
 878
 879         /*
 880          * Make sure wait for the first client does not remain active after the
 881          * group has been removed.
 882          */
 883         wpa_s->global->p2p_go_wait_client.sec = 0;
 884
 885         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 886                 struct wpa_global *global;
 887                 char *ifname;
 888                 enum wpa_driver_if_type type;
 889                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 890                         wpa_s->ifname);
 891                 global = wpa_s->global;
 892                 ifname = os_strdup(wpa_s->ifname);
 893                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 894                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 895                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 896                 wpa_s = global->ifaces;
 897                 if (wpa_s && ifname)
 898                         wpa_drv_if_remove(wpa_s, type, ifname);
 899                 os_free(ifname);
 900                 return 1;
 901         }
 902
 903         if (!wpa_s->p2p_go_group_formation_completed) {
 904                 wpa_s->global->p2p_group_formation = NULL;
 905                 wpa_s->p2p_in_provisioning = 0;
 906         }
 907
 908         wpa_s->show_group_started = 0;
 909         os_free(wpa_s->go_params);
 910         wpa_s->go_params = NULL;
 911
 912         os_free(wpa_s->p2p_group_common_freqs);
 913         wpa_s->p2p_group_common_freqs = NULL;
 914         wpa_s->p2p_group_common_freqs_num = 0;
 915
 916         wpa_s->waiting_presence_resp = 0;
 917
 918         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 919         if (ssid && (ssid->p2p_group ||
 920                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 921                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 922                 int id = ssid->id;
 923                 if (ssid == wpa_s->current_ssid) {
 924                         wpa_sm_set_config(wpa_s->wpa, NULL);
 925                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 926                         wpa_s->current_ssid = NULL;
 927                 }
 928                 /*
 929                  * Networks objects created during any P2P activities are not
 930                  * exposed out as they might/will confuse certain non-P2P aware
 931                  * applications since these network objects won't behave like
 932                  * regular ones.
 933                  *
 934                  * Likewise, we don't send out network removed signals for such
 935                  * network objects.
 936                  */
 937                 wpa_config_remove_network(wpa_s->conf, id);
 938                 wpa_supplicant_clear_status(wpa_s);
 939                 wpa_supplicant_cancel_sched_scan(wpa_s);
 940         } else {
 941                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 942                            "found");
 943         }
 944         if (wpa_s->ap_iface)
 945                 wpa_supplicant_ap_deinit(wpa_s);
 946         else
 947                 wpa_drv_deinit_p2p_cli(wpa_s);
 948
 949         return 0;
 950 }
 951
 952
 953 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 954                                      u8 *go_dev_addr,
 955                                      const u8 *ssid, size_t ssid_len)
 956 {
 957         struct wpa_bss *bss;
 958         const u8 *bssid;
 959         struct wpabuf *p2p;
 960         u8 group_capab;
 961         const u8 *addr;
 962
 963         if (wpa_s->go_params)
 964                 bssid = wpa_s->go_params->peer_interface_addr;
 965         else
 966                 bssid = wpa_s->bssid;
 967
 968         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 969         if (bss == NULL && wpa_s->go_params &&
 970             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 971                 bss = wpa_bss_get_p2p_dev_addr(
 972                         wpa_s, wpa_s->go_params->peer_device_addr);
 973         if (bss == NULL) {
 974                 u8 iface_addr[ETH_ALEN];
 975                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 976                                            iface_addr) == 0)
 977                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 978         }
 979         if (bss == NULL) {
 980                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 981                            "group is persistent - BSS " MACSTR " not found",
 982                            MAC2STR(bssid));
 983                 return 0;
 984         }
 985
 986         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 987         if (p2p == NULL)
 988                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 989                                                          P2P_IE_VENDOR_TYPE);
 990         if (p2p == NULL) {
 991                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 992                            "group is persistent - BSS " MACSTR
 993                            " did not include P2P IE", MAC2STR(bssid));
 994                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 995                             (u8 *) (bss + 1), bss->ie_len);
 996                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 997                             ((u8 *) bss + 1) + bss->ie_len,
 998                             bss->beacon_ie_len);
 999                 return 0;
1000         }
1001
1002         group_capab = p2p_get_group_capab(p2p);
1003         addr = p2p_get_go_dev_addr(p2p);
1004         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1005                    "group_capab=0x%x", group_capab);
1006         if (addr) {
1007                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1008                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1009                            MAC2STR(addr));
1010         } else
1011                 os_memset(go_dev_addr, 0, ETH_ALEN);
1012         wpabuf_free(p2p);
1013
1014         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1015                    "go_dev_addr=" MACSTR,
1016                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1017
1018         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1019 }
1020
1021
1022 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1023                                            struct wpa_ssid *ssid,
1024                                            const u8 *go_dev_addr)
1025 {
1026         struct wpa_ssid *s;
1027         int changed = 0;
1028
1029         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1030                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1031         for (s = wpa_s->conf->ssid; s; s = s->next) {
1032                 if (s->disabled == 2 &&
1033                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1034                     s->ssid_len == ssid->ssid_len &&
1035                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1036                         break;
1037         }
1038
1039         if (s) {
1040                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1041                            "entry");
1042                 if (ssid->passphrase && !s->passphrase)
1043                         changed = 1;
1044                 else if (ssid->passphrase && s->passphrase &&
1045                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1046                         changed = 1;
1047         } else {
1048                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1049                            "entry");
1050                 changed = 1;
1051                 s = wpa_config_add_network(wpa_s->conf);
1052                 if (s == NULL)
1053                         return -1;
1054
1055                 /*
1056                  * Instead of network_added we emit persistent_group_added
1057                  * notification. Also to keep the defense checks in
1058                  * persistent_group obj registration method, we set the
1059                  * relevant flags in s to designate it as a persistent group.
1060                  */
1061                 s->p2p_group = 1;
1062                 s->p2p_persistent_group = 1;
1063                 wpas_notify_persistent_group_added(wpa_s, s);
1064                 wpa_config_set_network_defaults(s);
1065         }
1066
1067         s->p2p_group = 1;
1068         s->p2p_persistent_group = 1;
1069         s->disabled = 2;
1070         s->bssid_set = 1;
1071         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1072         s->mode = ssid->mode;
1073         s->auth_alg = WPA_AUTH_ALG_OPEN;
1074         s->key_mgmt = WPA_KEY_MGMT_PSK;
1075         s->proto = WPA_PROTO_RSN;
1076         s->pairwise_cipher = WPA_CIPHER_CCMP;
1077         s->export_keys = 1;
1078         if (ssid->passphrase) {
1079                 os_free(s->passphrase);
1080                 s->passphrase = os_strdup(ssid->passphrase);
1081         }
1082         if (ssid->psk_set) {
1083                 s->psk_set = 1;
1084                 os_memcpy(s->psk, ssid->psk, 32);
1085         }
1086         if (s->passphrase && !s->psk_set)
1087                 wpa_config_update_psk(s);
1088         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1089                 os_free(s->ssid);
1090                 s->ssid = os_malloc(ssid->ssid_len);
1091         }
1092         if (s->ssid) {
1093                 s->ssid_len = ssid->ssid_len;
1094                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1095         }
1096         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1097                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1098                 wpa_s->global->add_psk = NULL;
1099                 changed = 1;
1100         }
1101
1102         if (changed && wpa_s->conf->update_config &&
1103             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1104                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1105         }
1106
1107         return s->id;
1108 }
1109
1110
1111 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1112                                                  const u8 *addr)
1113 {
1114         struct wpa_ssid *ssid, *s;
1115         u8 *n;
1116         size_t i;
1117         int found = 0;
1118         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1119
1120         ssid = wpa_s->current_ssid;
1121         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1122             !ssid->p2p_persistent_group)
1123                 return;
1124
1125         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1126                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1127                         continue;
1128
1129                 if (s->ssid_len == ssid->ssid_len &&
1130                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1131                         break;
1132         }
1133
1134         if (s == NULL)
1135                 return;
1136
1137         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1138                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1139                               ETH_ALEN) != 0)
1140                         continue;
1141
1142                 if (i == s->num_p2p_clients - 1)
1143                         return; /* already the most recent entry */
1144
1145                 /* move the entry to mark it most recent */
1146                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1147                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1148                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1149                 os_memcpy(s->p2p_client_list +
1150                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1151                           ETH_ALEN);
1152                 os_memset(s->p2p_client_list +
1153                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1154                           0xff, ETH_ALEN);
1155                 found = 1;
1156                 break;
1157         }
1158
1159         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1160                 n = os_realloc_array(s->p2p_client_list,
1161                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1162                 if (n == NULL)
1163                         return;
1164                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1165                           ETH_ALEN);
1166                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1167                           0xff, ETH_ALEN);
1168                 s->p2p_client_list = n;
1169                 s->num_p2p_clients++;
1170         } else if (!found && s->p2p_client_list) {
1171                 /* Not enough room for an additional entry - drop the oldest
1172                  * entry */
1173                 os_memmove(s->p2p_client_list,
1174                            s->p2p_client_list + 2 * ETH_ALEN,
1175                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1176                 os_memcpy(s->p2p_client_list +
1177                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1178                           addr, ETH_ALEN);
1179                 os_memset(s->p2p_client_list +
1180                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1181                           0xff, ETH_ALEN);
1182         }
1183
1184         if (p2p_wpa_s->conf->update_config &&
1185             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1186                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1187 }
1188
1189
1190 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1191                                    int go, struct wpa_ssid *ssid, int freq,
1192                                    const u8 *psk, const char *passphrase,
1193                                    const u8 *go_dev_addr, int persistent,
1194                                    const char *extra)
1195 {
1196         const char *ssid_txt;
1197         char psk_txt[65];
1198
1199         if (psk)
1200                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1201         else
1202                 psk_txt[0] = '\0';
1203
1204         if (ssid)
1205                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1206         else
1207                 ssid_txt = "";
1208
1209         if (passphrase && passphrase[0] == '\0')
1210                 passphrase = NULL;
1211
1212         /*
1213          * Include PSK/passphrase only in the control interface message and
1214          * leave it out from the debug log entry.
1215          */
1216         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1217                             P2P_EVENT_GROUP_STARTED
1218                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1219                             MACSTR "%s%s",
1220                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1221                             psk ? " psk=" : "", psk_txt,
1222                             passphrase ? " passphrase=\"" : "",
1223                             passphrase ? passphrase : "",
1224                             passphrase ? "\"" : "",
1225                             MAC2STR(go_dev_addr),
1226                             persistent ? " [PERSISTENT]" : "", extra);
1227         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1228                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1229                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1230                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1231                    extra);
1232 }
1233
1234
1235 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1236                                            int success, int already_deleted)
1237 {
1238         struct wpa_ssid *ssid;
1239         int client;
1240         int persistent;
1241         u8 go_dev_addr[ETH_ALEN];
1242         int network_id = -1;
1243
1244         /*
1245          * This callback is likely called for the main interface. Update wpa_s
1246          * to use the group interface if a new interface was created for the
1247          * group.
1248          */
1249         if (wpa_s->global->p2p_group_formation)
1250                 wpa_s = wpa_s->global->p2p_group_formation;
1251         if (wpa_s->p2p_go_group_formation_completed) {
1252                 wpa_s->global->p2p_group_formation = NULL;
1253                 wpa_s->p2p_in_provisioning = 0;
1254         }
1255         wpa_s->p2p_in_invitation = 0;
1256         wpa_s->group_formation_reported = 1;
1257
1258         if (!success) {
1259                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1260                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1261                 if (already_deleted)
1262                         return;
1263                 wpas_p2p_group_delete(wpa_s,
1264                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1265                 return;
1266         }
1267
1268         wpa_msg_global(wpa_s->parent, MSG_INFO,
1269                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1270
1271         ssid = wpa_s->current_ssid;
1272         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1273                 ssid->mode = WPAS_MODE_P2P_GO;
1274                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1275                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1276         }
1277
1278         persistent = 0;
1279         if (ssid) {
1280                 client = ssid->mode == WPAS_MODE_INFRA;
1281                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1282                         persistent = ssid->p2p_persistent_group;
1283                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1284                                   ETH_ALEN);
1285                 } else
1286                         persistent = wpas_p2p_persistent_group(wpa_s,
1287                                                                go_dev_addr,
1288                                                                ssid->ssid,
1289                                                                ssid->ssid_len);
1290         } else {
1291                 client = wpa_s->p2p_group_interface ==
1292                         P2P_GROUP_INTERFACE_CLIENT;
1293                 os_memset(go_dev_addr, 0, ETH_ALEN);
1294         }
1295
1296         wpa_s->show_group_started = 0;
1297         if (client) {
1298                 /*
1299                  * Indicate event only after successfully completed 4-way
1300                  * handshake, i.e., when the interface is ready for data
1301                  * packets.
1302                  */
1303                 wpa_s->show_group_started = 1;
1304         } else {
1305                 wpas_p2p_group_started(wpa_s, 1, ssid,
1306                                        ssid ? ssid->frequency : 0,
1307                                        ssid && ssid->passphrase == NULL &&
1308                                        ssid->psk_set ? ssid->psk : NULL,
1309                                        ssid ? ssid->passphrase : NULL,
1310                                        go_dev_addr, persistent, "");
1311                 wpas_p2p_cross_connect_setup(wpa_s);
1312                 wpas_p2p_set_group_idle_timeout(wpa_s);
1313         }
1314
1315         if (persistent)
1316                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1317                                                              ssid, go_dev_addr);
1318         else {
1319                 os_free(wpa_s->global->add_psk);
1320                 wpa_s->global->add_psk = NULL;
1321         }
1322         if (network_id < 0 && ssid)
1323                 network_id = ssid->id;
1324         if (!client) {
1325                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1326                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1327         }
1328 }
1329
1330
1331 struct send_action_work {
1332         unsigned int freq;
1333         u8 dst[ETH_ALEN];
1334         u8 src[ETH_ALEN];
1335         u8 bssid[ETH_ALEN];
1336         size_t len;
1337         unsigned int wait_time;
1338         u8 buf[0];
1339 };
1340
1341
1342 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1343                                               void *timeout_ctx)
1344 {
1345         struct wpa_supplicant *wpa_s = eloop_ctx;
1346
1347         if (!wpa_s->p2p_send_action_work)
1348                 return;
1349
1350         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1351         os_free(wpa_s->p2p_send_action_work->ctx);
1352         radio_work_done(wpa_s->p2p_send_action_work);
1353         wpa_s->p2p_send_action_work = NULL;
1354 }
1355
1356
1357 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1358 {
1359         if (wpa_s->p2p_send_action_work) {
1360                 struct send_action_work *awork;
1361                 awork = wpa_s->p2p_send_action_work->ctx;
1362                 if (awork->wait_time == 0) {
1363                         os_free(awork);
1364                         radio_work_done(wpa_s->p2p_send_action_work);
1365                         wpa_s->p2p_send_action_work = NULL;
1366                 } else {
1367                         /*
1368                          * In theory, this should not be needed, but number of
1369                          * places in the P2P code is still using non-zero wait
1370                          * time for the last Action frame in the sequence and
1371                          * some of these do not call send_action_done().
1372                          */
1373                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1374                                              wpa_s, NULL);
1375                         eloop_register_timeout(
1376                                 0, awork->wait_time * 1000,
1377                                 wpas_p2p_send_action_work_timeout,
1378                                 wpa_s, NULL);
1379                 }
1380         }
1381 }
1382
1383
1384 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1385                                            unsigned int freq,
1386                                            const u8 *dst, const u8 *src,
1387                                            const u8 *bssid,
1388                                            const u8 *data, size_t data_len,
1389                                            enum offchannel_send_action_result
1390                                            result)
1391 {
1392         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1393
1394         wpas_p2p_action_tx_clear(wpa_s);
1395
1396         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1397                 return;
1398
1399         switch (result) {
1400         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1401                 res = P2P_SEND_ACTION_SUCCESS;
1402                 break;
1403         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1404                 res = P2P_SEND_ACTION_NO_ACK;
1405                 break;
1406         case OFFCHANNEL_SEND_ACTION_FAILED:
1407                 res = P2P_SEND_ACTION_FAILED;
1408                 break;
1409         }
1410
1411         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1412
1413         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1414             wpa_s->pending_pd_before_join &&
1415             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1416              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1417             wpa_s->p2p_fallback_to_go_neg) {
1418                 wpa_s->pending_pd_before_join = 0;
1419                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1420                         "during p2p_connect-auto");
1421                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1422                                P2P_EVENT_FALLBACK_TO_GO_NEG
1423                                "reason=no-ACK-to-PD-Req");
1424                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1425                 return;
1426         }
1427 }
1428
1429
1430 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1431 {
1432         struct wpa_supplicant *wpa_s = work->wpa_s;
1433         struct send_action_work *awork = work->ctx;
1434
1435         if (deinit) {
1436                 if (work->started) {
1437                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1438                                              wpa_s, NULL);
1439                         wpa_s->p2p_send_action_work = NULL;
1440                         offchannel_send_action_done(wpa_s);
1441                 }
1442                 os_free(awork);
1443                 return;
1444         }
1445
1446         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1447                                    awork->bssid, awork->buf, awork->len,
1448                                    awork->wait_time,
1449                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1450                 os_free(awork);
1451                 radio_work_done(work);
1452                 return;
1453         }
1454         wpa_s->p2p_send_action_work = work;
1455 }
1456
1457
1458 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1459                                  unsigned int freq, const u8 *dst,
1460                                  const u8 *src, const u8 *bssid, const u8 *buf,
1461                                  size_t len, unsigned int wait_time)
1462 {
1463         struct send_action_work *awork;
1464
1465         if (wpa_s->p2p_send_action_work) {
1466                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1467                 return -1;
1468         }
1469
1470         awork = os_zalloc(sizeof(*awork) + len);
1471         if (awork == NULL)
1472                 return -1;
1473
1474         awork->freq = freq;
1475         os_memcpy(awork->dst, dst, ETH_ALEN);
1476         os_memcpy(awork->src, src, ETH_ALEN);
1477         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1478         awork->len = len;
1479         awork->wait_time = wait_time;
1480         os_memcpy(awork->buf, buf, len);
1481
1482         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1483                            wpas_send_action_cb, awork) < 0) {
1484                 os_free(awork);
1485                 return -1;
1486         }
1487
1488         return 0;
1489 }
1490
1491
1492 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1493                             const u8 *src, const u8 *bssid, const u8 *buf,
1494                             size_t len, unsigned int wait_time)
1495 {
1496         struct wpa_supplicant *wpa_s = ctx;
1497         int listen_freq = -1, send_freq = -1;
1498
1499         if (wpa_s->p2p_listen_work)
1500                 listen_freq = wpa_s->p2p_listen_work->freq;
1501         if (wpa_s->p2p_send_action_work)
1502                 send_freq = wpa_s->p2p_send_action_work->freq;
1503         if (listen_freq != (int) freq && send_freq != (int) freq) {
1504                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1505                            listen_freq, send_freq);
1506                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1507                                              len, wait_time);
1508         }
1509
1510         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1511         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1512                                       wait_time,
1513                                       wpas_p2p_send_action_tx_status, 1);
1514 }
1515
1516
1517 static void wpas_send_action_done(void *ctx)
1518 {
1519         struct wpa_supplicant *wpa_s = ctx;
1520
1521         if (wpa_s->p2p_send_action_work) {
1522                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1523                                      wpa_s, NULL);
1524                 os_free(wpa_s->p2p_send_action_work->ctx);
1525                 radio_work_done(wpa_s->p2p_send_action_work);
1526                 wpa_s->p2p_send_action_work = NULL;
1527         }
1528
1529         offchannel_send_action_done(wpa_s);
1530 }
1531
1532
1533 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1534                                     struct p2p_go_neg_results *params)
1535 {
1536         if (wpa_s->go_params == NULL) {
1537                 wpa_s->go_params = os_malloc(sizeof(*params));
1538                 if (wpa_s->go_params == NULL)
1539                         return -1;
1540         }
1541         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1542         return 0;
1543 }
1544
1545
1546 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1547                                     struct p2p_go_neg_results *res)
1548 {
1549         wpa_s->group_formation_reported = 0;
1550         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1551                    " dev_addr " MACSTR " wps_method %d",
1552                    MAC2STR(res->peer_interface_addr),
1553                    MAC2STR(res->peer_device_addr), res->wps_method);
1554         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1555                           res->ssid, res->ssid_len);
1556         wpa_supplicant_ap_deinit(wpa_s);
1557         wpas_copy_go_neg_results(wpa_s, res);
1558         if (res->wps_method == WPS_PBC) {
1559                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1560 #ifdef CONFIG_WPS_NFC
1561         } else if (res->wps_method == WPS_NFC) {
1562                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1563                                    res->peer_interface_addr,
1564                                    wpa_s->parent->p2p_oob_dev_pw,
1565                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1566                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1567                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1568                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1569                                    NULL,
1570                                    NULL, 0, 0);
1571 #endif /* CONFIG_WPS_NFC */
1572         } else {
1573                 u16 dev_pw_id = DEV_PW_DEFAULT;
1574                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1575                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1576                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1577                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1578                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1579                                    wpa_s->p2p_pin, 1, dev_pw_id);
1580         }
1581 }
1582
1583
1584 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1585                                   struct wpa_ssid *ssid)
1586 {
1587         struct wpa_ssid *persistent;
1588         struct psk_list_entry *psk;
1589         struct hostapd_data *hapd;
1590
1591         if (!wpa_s->ap_iface)
1592                 return;
1593
1594         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1595                                              ssid->ssid_len);
1596         if (persistent == NULL)
1597                 return;
1598
1599         hapd = wpa_s->ap_iface->bss[0];
1600
1601         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1602                          list) {
1603                 struct hostapd_wpa_psk *hpsk;
1604
1605                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1606                         MACSTR " psk=%d",
1607                         MAC2STR(psk->addr), psk->p2p);
1608                 hpsk = os_zalloc(sizeof(*hpsk));
1609                 if (hpsk == NULL)
1610                         break;
1611                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1612                 if (psk->p2p)
1613                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1614                 else
1615                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1616                 hpsk->next = hapd->conf->ssid.wpa_psk;
1617                 hapd->conf->ssid.wpa_psk = hpsk;
1618         }
1619 }
1620
1621
1622 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1623 {
1624         unsigned int i;
1625
1626         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1627                 wpa_s->p2p_group_common_freqs_num);
1628
1629         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1630                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1631                         i, wpa_s->p2p_group_common_freqs[i]);
1632 }
1633
1634
1635 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1636                                            struct p2p_go_neg_results *params)
1637 {
1638         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1639
1640         wpa_s->p2p_group_common_freqs_num = 0;
1641         os_free(wpa_s->p2p_group_common_freqs);
1642         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1643         if (!wpa_s->p2p_group_common_freqs)
1644                 return;
1645
1646         for (i = 0; i < len; i++) {
1647                 if (!wpa_s->go_params->freq_list[i])
1648                         break;
1649                 wpa_s->p2p_group_common_freqs[i] =
1650                         wpa_s->go_params->freq_list[i];
1651         }
1652         wpa_s->p2p_group_common_freqs_num = i;
1653 }
1654
1655
1656 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1657 {
1658 #ifndef CONFIG_NO_CONFIG_WRITE
1659         if (wpa_s->parent->conf->update_config &&
1660             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1661                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1662 #endif /* CONFIG_NO_CONFIG_WRITE */
1663 }
1664
1665
1666 static void p2p_go_configured(void *ctx, void *data)
1667 {
1668         struct wpa_supplicant *wpa_s = ctx;
1669         struct p2p_go_neg_results *params = data;
1670         struct wpa_ssid *ssid;
1671         int network_id = -1;
1672
1673         p2p_go_save_group_common_freqs(wpa_s, params);
1674         p2p_go_dump_common_freqs(wpa_s);
1675
1676         ssid = wpa_s->current_ssid;
1677         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1678                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1679                 if (wpa_s->global->p2p_group_formation == wpa_s)
1680                         wpa_s->global->p2p_group_formation = NULL;
1681                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1682                                        params->passphrase[0] == '\0' ?
1683                                        params->psk : NULL,
1684                                        params->passphrase,
1685                                        wpa_s->global->p2p_dev_addr,
1686                                        params->persistent_group, "");
1687                 wpa_s->group_formation_reported = 1;
1688
1689                 if (wpa_s->parent->p2ps_join_addr_valid) {
1690                         wpa_dbg(wpa_s, MSG_DEBUG,
1691                                 "P2PS: Setting default PIN for " MACSTR,
1692                                 MAC2STR(wpa_s->parent->p2ps_join_addr));
1693                         wpa_supplicant_ap_wps_pin(wpa_s,
1694                                                   wpa_s->parent->p2ps_join_addr,
1695                                                   "12345670", NULL, 0, 0);
1696                         wpa_s->parent->p2ps_join_addr_valid = 0;
1697                 }
1698
1699                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1700                 if (params->persistent_group) {
1701                         network_id = wpas_p2p_store_persistent_group(
1702                                 wpa_s->parent, ssid,
1703                                 wpa_s->global->p2p_dev_addr);
1704                         wpas_p2p_add_psk_list(wpa_s, ssid);
1705                 }
1706                 if (network_id < 0)
1707                         network_id = ssid->id;
1708                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1709                 wpas_p2p_cross_connect_setup(wpa_s);
1710                 wpas_p2p_set_group_idle_timeout(wpa_s);
1711
1712                 if (wpa_s->p2p_first_connection_timeout) {
1713                         wpa_dbg(wpa_s, MSG_DEBUG,
1714                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1715                                 wpa_s->p2p_first_connection_timeout);
1716                         wpa_s->p2p_go_group_formation_completed = 0;
1717                         wpa_s->global->p2p_group_formation = wpa_s;
1718                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1719                                              wpa_s->parent, NULL);
1720                         eloop_register_timeout(
1721                                 wpa_s->p2p_first_connection_timeout, 0,
1722                                 wpas_p2p_group_formation_timeout,
1723                                 wpa_s->parent, NULL);
1724                 }
1725
1726                 return;
1727         }
1728
1729         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1730         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1731                                               params->peer_interface_addr)) {
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1733                            "filtering");
1734                 return;
1735         }
1736         if (params->wps_method == WPS_PBC) {
1737                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1738                                           params->peer_device_addr);
1739 #ifdef CONFIG_WPS_NFC
1740         } else if (params->wps_method == WPS_NFC) {
1741                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1742                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1743                     !wpa_s->parent->p2p_oob_dev_pw) {
1744                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1745                         return;
1746                 }
1747                 wpas_ap_wps_add_nfc_pw(
1748                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1749                         wpa_s->parent->p2p_oob_dev_pw,
1750                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1751                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1752 #endif /* CONFIG_WPS_NFC */
1753         } else if (wpa_s->p2p_pin[0])
1754                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1755                                           wpa_s->p2p_pin, NULL, 0, 0);
1756         os_free(wpa_s->go_params);
1757         wpa_s->go_params = NULL;
1758 }
1759
1760
1761 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1762                               struct p2p_go_neg_results *params,
1763                               int group_formation)
1764 {
1765         struct wpa_ssid *ssid;
1766
1767         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1768         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1769                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1770                         "results");
1771                 return;
1772         }
1773
1774         ssid = wpa_config_add_network(wpa_s->conf);
1775         if (ssid == NULL) {
1776                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1777                 return;
1778         }
1779
1780         wpa_s->show_group_started = 0;
1781         wpa_s->p2p_go_group_formation_completed = 0;
1782         wpa_s->group_formation_reported = 0;
1783
1784         wpa_config_set_network_defaults(ssid);
1785         ssid->temporary = 1;
1786         ssid->p2p_group = 1;
1787         ssid->p2p_persistent_group = params->persistent_group;
1788         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1789                 WPAS_MODE_P2P_GO;
1790         ssid->frequency = params->freq;
1791         ssid->ht40 = params->ht40;
1792         ssid->vht = params->vht;
1793         ssid->ssid = os_zalloc(params->ssid_len + 1);
1794         if (ssid->ssid) {
1795                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1796                 ssid->ssid_len = params->ssid_len;
1797         }
1798         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1799         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1800         ssid->proto = WPA_PROTO_RSN;
1801         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1802         ssid->group_cipher = WPA_CIPHER_CCMP;
1803         if (params->freq > 56160) {
1804                 /*
1805                  * Enable GCMP instead of CCMP as pairwise_cipher and
1806                  * group_cipher in 60 GHz.
1807                  */
1808                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1809                 ssid->group_cipher = WPA_CIPHER_GCMP;
1810         }
1811         if (os_strlen(params->passphrase) > 0) {
1812                 ssid->passphrase = os_strdup(params->passphrase);
1813                 if (ssid->passphrase == NULL) {
1814                         wpa_msg_global(wpa_s, MSG_ERROR,
1815                                        "P2P: Failed to copy passphrase for GO");
1816                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1817                         return;
1818                 }
1819         } else
1820                 ssid->passphrase = NULL;
1821         ssid->psk_set = params->psk_set;
1822         if (ssid->psk_set)
1823                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1824         else if (ssid->passphrase)
1825                 wpa_config_update_psk(ssid);
1826         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1827
1828         wpa_s->ap_configured_cb = p2p_go_configured;
1829         wpa_s->ap_configured_cb_ctx = wpa_s;
1830         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1831         wpa_s->scan_req = NORMAL_SCAN_REQ;
1832         wpa_s->connect_without_scan = ssid;
1833         wpa_s->reassociate = 1;
1834         wpa_s->disconnected = 0;
1835         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1836                 "start GO)");
1837         wpa_supplicant_req_scan(wpa_s, 0, 0);
1838 }
1839
1840
1841 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1842                                   const struct wpa_supplicant *src)
1843 {
1844         struct wpa_config *d;
1845         const struct wpa_config *s;
1846
1847         d = dst->conf;
1848         s = src->conf;
1849
1850 #define C(n) if (s->n) d->n = os_strdup(s->n)
1851         C(device_name);
1852         C(manufacturer);
1853         C(model_name);
1854         C(model_number);
1855         C(serial_number);
1856         C(config_methods);
1857 #undef C
1858
1859         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1860         os_memcpy(d->sec_device_type, s->sec_device_type,
1861                   sizeof(d->sec_device_type));
1862         d->num_sec_device_types = s->num_sec_device_types;
1863
1864         d->p2p_group_idle = s->p2p_group_idle;
1865         d->p2p_intra_bss = s->p2p_intra_bss;
1866         d->persistent_reconnect = s->persistent_reconnect;
1867         d->max_num_sta = s->max_num_sta;
1868         d->pbc_in_m1 = s->pbc_in_m1;
1869         d->ignore_old_scan_res = s->ignore_old_scan_res;
1870         d->beacon_int = s->beacon_int;
1871         d->dtim_period = s->dtim_period;
1872         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1873         d->disassoc_low_ack = s->disassoc_low_ack;
1874         d->disable_scan_offload = s->disable_scan_offload;
1875         d->passive_scan = s->passive_scan;
1876
1877         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1878                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1879                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1880         }
1881         d->p2p_cli_probe = s->p2p_cli_probe;
1882 }
1883
1884
1885 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1886                                       char *ifname, size_t len)
1887 {
1888         char *ifname_ptr = wpa_s->ifname;
1889
1890         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1891                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1892                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1893         }
1894
1895         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1896         if (os_strlen(ifname) >= IFNAMSIZ &&
1897             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1898                 int res;
1899
1900                 /* Try to avoid going over the IFNAMSIZ length limit */
1901                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1902                 if (os_snprintf_error(len, res) && len)
1903                         ifname[len - 1] = '\0';
1904         }
1905 }
1906
1907
1908 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1909                                         enum wpa_driver_if_type type)
1910 {
1911         char ifname[120], force_ifname[120];
1912
1913         if (wpa_s->pending_interface_name[0]) {
1914                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1915                            "- skip creation of a new one");
1916                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1917                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1918                                    "unknown?! ifname='%s'",
1919                                    wpa_s->pending_interface_name);
1920                         return -1;
1921                 }
1922                 return 0;
1923         }
1924
1925         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1926         force_ifname[0] = '\0';
1927
1928         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1929                    ifname);
1930         wpa_s->p2p_group_idx++;
1931
1932         wpa_s->pending_interface_type = type;
1933         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1934                            wpa_s->pending_interface_addr, NULL) < 0) {
1935                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1936                            "interface");
1937                 return -1;
1938         }
1939
1940         if (force_ifname[0]) {
1941                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1942                            force_ifname);
1943                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1944                            sizeof(wpa_s->pending_interface_name));
1945         } else
1946                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1947                            sizeof(wpa_s->pending_interface_name));
1948         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1949                    MACSTR, wpa_s->pending_interface_name,
1950                    MAC2STR(wpa_s->pending_interface_addr));
1951
1952         return 0;
1953 }
1954
1955
1956 static void wpas_p2p_remove_pending_group_interface(
1957         struct wpa_supplicant *wpa_s)
1958 {
1959         if (!wpa_s->pending_interface_name[0] ||
1960             is_zero_ether_addr(wpa_s->pending_interface_addr))
1961                 return; /* No pending virtual interface */
1962
1963         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1964                    wpa_s->pending_interface_name);
1965         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1966                           wpa_s->pending_interface_name);
1967         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1968         wpa_s->pending_interface_name[0] = '\0';
1969         wpa_s->global->pending_group_iface_for_p2ps = 0;
1970 }
1971
1972
1973 static struct wpa_supplicant *
1974 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1975 {
1976         struct wpa_interface iface;
1977         struct wpa_supplicant *group_wpa_s;
1978
1979         if (!wpa_s->pending_interface_name[0]) {
1980                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1981                 if (!wpas_p2p_create_iface(wpa_s))
1982                         return NULL;
1983                 /*
1984                  * Something has forced us to remove the pending interface; try
1985                  * to create a new one and hope for the best that we will get
1986                  * the same local address.
1987                  */
1988                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1989                                                  WPA_IF_P2P_CLIENT) < 0)
1990                         return NULL;
1991         }
1992
1993         os_memset(&iface, 0, sizeof(iface));
1994         iface.ifname = wpa_s->pending_interface_name;
1995         iface.driver = wpa_s->driver->name;
1996         if (wpa_s->conf->ctrl_interface == NULL &&
1997             wpa_s->parent != wpa_s &&
1998             wpa_s->p2p_mgmt &&
1999             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2000                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2001         else
2002                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2003         iface.driver_param = wpa_s->conf->driver_param;
2004         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2005         if (group_wpa_s == NULL) {
2006                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2007                            "wpa_supplicant interface");
2008                 return NULL;
2009         }
2010         wpa_s->pending_interface_name[0] = '\0';
2011         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2012                 P2P_GROUP_INTERFACE_CLIENT;
2013         wpa_s->global->p2p_group_formation = group_wpa_s;
2014         wpa_s->global->pending_group_iface_for_p2ps = 0;
2015
2016         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2017
2018         return group_wpa_s;
2019 }
2020
2021
2022 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2023                                              void *timeout_ctx)
2024 {
2025         struct wpa_supplicant *wpa_s = eloop_ctx;
2026         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2027         wpas_p2p_group_formation_failed(wpa_s, 0);
2028 }
2029
2030
2031 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2032                                             int already_deleted)
2033 {
2034         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2035                              wpa_s->parent, NULL);
2036         if (wpa_s->global->p2p)
2037                 p2p_group_formation_failed(wpa_s->global->p2p);
2038         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2039 }
2040
2041
2042 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2043 {
2044         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2045         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2046                              wpa_s->parent, NULL);
2047         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2048                                wpa_s->parent, NULL);
2049         wpa_s->global->p2p_fail_on_wps_complete = 0;
2050 }
2051
2052
2053 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2054 {
2055         if (wpa_s->global->p2p_group_formation != wpa_s)
2056                 return;
2057         /* Speed up group formation timeout since this cannot succeed */
2058         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2059                              wpa_s->parent, NULL);
2060         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2061                                wpa_s->parent, NULL);
2062 }
2063
2064
2065 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2066 {
2067         struct wpa_supplicant *wpa_s = ctx;
2068
2069         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2070                 wpa_drv_cancel_remain_on_channel(wpa_s);
2071                 wpa_s->off_channel_freq = 0;
2072                 wpa_s->roc_waiting_drv_freq = 0;
2073         }
2074
2075         if (res->status) {
2076                 wpa_msg_global(wpa_s, MSG_INFO,
2077                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2078                                res->status);
2079                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2080                 wpas_p2p_remove_pending_group_interface(wpa_s);
2081                 return;
2082         }
2083
2084         if (wpa_s->p2p_go_ht40)
2085                 res->ht40 = 1;
2086         if (wpa_s->p2p_go_vht)
2087                 res->vht = 1;
2088
2089         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2090                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2091                        " wps_method=%s",
2092                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2093                        MAC2STR(res->peer_device_addr),
2094                        MAC2STR(res->peer_interface_addr),
2095                        p2p_wps_method_text(res->wps_method));
2096         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2097
2098         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2099                 struct wpa_ssid *ssid;
2100                 ssid = wpa_config_get_network(wpa_s->conf,
2101                                               wpa_s->p2p_persistent_id);
2102                 if (ssid && ssid->disabled == 2 &&
2103                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2104                         size_t len = os_strlen(ssid->passphrase);
2105                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2106                                    "on requested persistent group");
2107                         os_memcpy(res->passphrase, ssid->passphrase, len);
2108                         res->passphrase[len] = '\0';
2109                 }
2110         }
2111
2112         if (wpa_s->create_p2p_iface) {
2113                 struct wpa_supplicant *group_wpa_s =
2114                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2115                 if (group_wpa_s == NULL) {
2116                         wpas_p2p_remove_pending_group_interface(wpa_s);
2117                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2118                                              wpa_s, NULL);
2119                         wpas_p2p_group_formation_failed(wpa_s, 1);
2120                         return;
2121                 }
2122                 if (group_wpa_s != wpa_s) {
2123                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2124                                   sizeof(group_wpa_s->p2p_pin));
2125                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2126                 }
2127                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2128                 wpa_s->pending_interface_name[0] = '\0';
2129                 group_wpa_s->p2p_in_provisioning = 1;
2130
2131                 if (res->role_go)
2132                         wpas_start_wps_go(group_wpa_s, res, 1);
2133                 else
2134                         wpas_start_wps_enrollee(group_wpa_s, res);
2135         } else {
2136                 wpa_s->p2p_in_provisioning = 1;
2137                 wpa_s->global->p2p_group_formation = wpa_s;
2138
2139                 if (res->role_go)
2140                         wpas_start_wps_go(wpa_s, res, 1);
2141                 else
2142                         wpas_start_wps_enrollee(ctx, res);
2143         }
2144
2145         wpa_s->p2p_long_listen = 0;
2146         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2147
2148         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2149         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2150                                (res->peer_config_timeout % 100) * 10000,
2151                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2152 }
2153
2154
2155 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2156                                u8 go_intent)
2157 {
2158         struct wpa_supplicant *wpa_s = ctx;
2159         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2160                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2161                        dev_passwd_id, go_intent);
2162
2163         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2164 }
2165
2166
2167 static void wpas_dev_found(void *ctx, const u8 *addr,
2168                            const struct p2p_peer_info *info,
2169                            int new_device)
2170 {
2171 #ifndef CONFIG_NO_STDOUT_DEBUG
2172         struct wpa_supplicant *wpa_s = ctx;
2173         char devtype[WPS_DEV_TYPE_BUFSIZE];
2174         char *wfd_dev_info_hex = NULL;
2175
2176 #ifdef CONFIG_WIFI_DISPLAY
2177         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2178                                                     WFD_SUBELEM_DEVICE_INFO);
2179 #endif /* CONFIG_WIFI_DISPLAY */
2180
2181         if (info->p2ps_instance) {
2182                 char str[256];
2183                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2184                 size_t len = wpabuf_len(info->p2ps_instance);
2185
2186                 while (len) {
2187                         u32 id;
2188                         u16 methods;
2189                         u8 str_len;
2190
2191                         if (len < 4 + 2 + 1)
2192                                 break;
2193                         id = WPA_GET_LE32(buf);
2194                         buf += sizeof(u32);
2195                         methods = WPA_GET_BE16(buf);
2196                         buf += sizeof(u16);
2197                         str_len = *buf++;
2198                         if (str_len > len - 4 - 2 - 1)
2199                                 break;
2200                         os_memcpy(str, buf, str_len);
2201                         str[str_len] = '\0';
2202                         buf += str_len;
2203                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2204
2205                         wpa_msg_global(wpa_s, MSG_INFO,
2206                                        P2P_EVENT_DEVICE_FOUND MACSTR
2207                                        " p2p_dev_addr=" MACSTR
2208                                        " pri_dev_type=%s name='%s'"
2209                                        " config_methods=0x%x"
2210                                        " dev_capab=0x%x"
2211                                        " group_capab=0x%x"
2212                                        " adv_id=%x asp_svc=%s%s",
2213                                        MAC2STR(addr),
2214                                        MAC2STR(info->p2p_device_addr),
2215                                        wps_dev_type_bin2str(
2216                                                info->pri_dev_type,
2217                                                devtype, sizeof(devtype)),
2218                                        info->device_name, methods,
2219                                        info->dev_capab, info->group_capab,
2220                                        id, str,
2221                                        info->vendor_elems ?
2222                                        " vendor_elems=1" : "");
2223                 }
2224                 goto done;
2225         }
2226
2227         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2228                        " p2p_dev_addr=" MACSTR
2229                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2230                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2231                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2232                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2233                                             sizeof(devtype)),
2234                        info->device_name, info->config_methods,
2235                        info->dev_capab, info->group_capab,
2236                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2237                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2238                        info->vendor_elems ? " vendor_elems=1" : "",
2239                        new_device);
2240
2241 done:
2242         os_free(wfd_dev_info_hex);
2243 #endif /* CONFIG_NO_STDOUT_DEBUG */
2244
2245         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2246 }
2247
2248
2249 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2250 {
2251         struct wpa_supplicant *wpa_s = ctx;
2252
2253         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2254                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2255
2256         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2257 }
2258
2259
2260 static void wpas_find_stopped(void *ctx)
2261 {
2262         struct wpa_supplicant *wpa_s = ctx;
2263         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2264         wpas_notify_p2p_find_stopped(wpa_s);
2265 }
2266
2267
2268 struct wpas_p2p_listen_work {
2269         unsigned int freq;
2270         unsigned int duration;
2271         struct wpabuf *probe_resp_ie;
2272 };
2273
2274
2275 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2276 {
2277         if (lwork == NULL)
2278                 return;
2279         wpabuf_free(lwork->probe_resp_ie);
2280         os_free(lwork);
2281 }
2282
2283
2284 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2285 {
2286         struct wpas_p2p_listen_work *lwork;
2287
2288         if (!wpa_s->p2p_listen_work)
2289                 return;
2290
2291         lwork = wpa_s->p2p_listen_work->ctx;
2292         wpas_p2p_listen_work_free(lwork);
2293         radio_work_done(wpa_s->p2p_listen_work);
2294         wpa_s->p2p_listen_work = NULL;
2295 }
2296
2297
2298 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2299 {
2300         struct wpa_supplicant *wpa_s = work->wpa_s;
2301         struct wpas_p2p_listen_work *lwork = work->ctx;
2302         unsigned int duration;
2303
2304         if (deinit) {
2305                 if (work->started) {
2306                         wpa_s->p2p_listen_work = NULL;
2307                         wpas_stop_listen(wpa_s);
2308                 }
2309                 wpas_p2p_listen_work_free(lwork);
2310                 return;
2311         }
2312
2313         wpa_s->p2p_listen_work = work;
2314
2315         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2316
2317         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2318                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2319                            "report received Probe Request frames");
2320                 wpas_p2p_listen_work_done(wpa_s);
2321                 return;
2322         }
2323
2324         wpa_s->pending_listen_freq = lwork->freq;
2325         wpa_s->pending_listen_duration = lwork->duration;
2326
2327         duration = lwork->duration;
2328 #ifdef CONFIG_TESTING_OPTIONS
2329         if (wpa_s->extra_roc_dur) {
2330                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2331                            duration, duration + wpa_s->extra_roc_dur);
2332                 duration += wpa_s->extra_roc_dur;
2333         }
2334 #endif /* CONFIG_TESTING_OPTIONS */
2335
2336         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2337                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2338                            "to remain on channel (%u MHz) for Listen "
2339                            "state", lwork->freq);
2340                 wpas_p2p_listen_work_done(wpa_s);
2341                 wpa_s->pending_listen_freq = 0;
2342                 return;
2343         }
2344         wpa_s->off_channel_freq = 0;
2345         wpa_s->roc_waiting_drv_freq = lwork->freq;
2346 }
2347
2348
2349 static int wpas_start_listen(void *ctx, unsigned int freq,
2350                              unsigned int duration,
2351                              const struct wpabuf *probe_resp_ie)
2352 {
2353         struct wpa_supplicant *wpa_s = ctx;
2354         struct wpas_p2p_listen_work *lwork;
2355
2356         if (wpa_s->p2p_listen_work) {
2357                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2358                 return -1;
2359         }
2360
2361         lwork = os_zalloc(sizeof(*lwork));
2362         if (lwork == NULL)
2363                 return -1;
2364         lwork->freq = freq;
2365         lwork->duration = duration;
2366         if (probe_resp_ie) {
2367                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2368                 if (lwork->probe_resp_ie == NULL) {
2369                         wpas_p2p_listen_work_free(lwork);
2370                         return -1;
2371                 }
2372         }
2373
2374         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2375                            lwork) < 0) {
2376                 wpas_p2p_listen_work_free(lwork);
2377                 return -1;
2378         }
2379
2380         return 0;
2381 }
2382
2383
2384 static void wpas_stop_listen(void *ctx)
2385 {
2386         struct wpa_supplicant *wpa_s = ctx;
2387         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2388                 wpa_drv_cancel_remain_on_channel(wpa_s);
2389                 wpa_s->off_channel_freq = 0;
2390                 wpa_s->roc_waiting_drv_freq = 0;
2391         }
2392         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2393
2394         /*
2395          * Don't cancel Probe Request RX reporting for a connected P2P Client
2396          * handling Probe Request frames.
2397          */
2398         if (!wpa_s->p2p_cli_probe)
2399                 wpa_drv_probe_req_report(wpa_s, 0);
2400
2401         wpas_p2p_listen_work_done(wpa_s);
2402 }
2403
2404
2405 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2406                                 unsigned int freq)
2407 {
2408         struct wpa_supplicant *wpa_s = ctx;
2409         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2410                                  freq);
2411 }
2412
2413
2414 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2415                                          const u8 *peer, const char *params,
2416                                          unsigned int generated_pin)
2417 {
2418         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2419                        " %08d%s", MAC2STR(peer), generated_pin, params);
2420 }
2421
2422
2423 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2424                                         const u8 *peer, const char *params)
2425 {
2426         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2427                        "%s", MAC2STR(peer), params);
2428 }
2429
2430
2431 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2432                                const u8 *dev_addr, const u8 *pri_dev_type,
2433                                const char *dev_name, u16 supp_config_methods,
2434                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2435                                size_t group_id_len)
2436 {
2437         struct wpa_supplicant *wpa_s = ctx;
2438         char devtype[WPS_DEV_TYPE_BUFSIZE];
2439         char params[300];
2440         u8 empty_dev_type[8];
2441         unsigned int generated_pin = 0;
2442         struct wpa_supplicant *group = NULL;
2443         int res;
2444
2445         if (group_id) {
2446                 for (group = wpa_s->global->ifaces; group; group = group->next)
2447                 {
2448                         struct wpa_ssid *s = group->current_ssid;
2449                         if (s != NULL &&
2450                             s->mode == WPAS_MODE_P2P_GO &&
2451                             group_id_len - ETH_ALEN == s->ssid_len &&
2452                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2453                                       s->ssid_len) == 0)
2454                                 break;
2455                 }
2456         }
2457
2458         if (pri_dev_type == NULL) {
2459                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2460                 pri_dev_type = empty_dev_type;
2461         }
2462         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2463                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2464                           "dev_capab=0x%x group_capab=0x%x%s%s",
2465                           MAC2STR(dev_addr),
2466                           wps_dev_type_bin2str(pri_dev_type, devtype,
2467                                                sizeof(devtype)),
2468                           dev_name, supp_config_methods, dev_capab, group_capab,
2469                           group ? " group=" : "",
2470                           group ? group->ifname : "");
2471         if (os_snprintf_error(sizeof(params), res))
2472                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2473         params[sizeof(params) - 1] = '\0';
2474
2475         if (config_methods & WPS_CONFIG_DISPLAY) {
2476                 generated_pin = wps_generate_pin();
2477                 wpas_prov_disc_local_display(wpa_s, peer, params,
2478                                              generated_pin);
2479         } else if (config_methods & WPS_CONFIG_KEYPAD)
2480                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2481         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2482                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2483                                MACSTR "%s", MAC2STR(peer), params);
2484
2485         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2486                                             P2P_PROV_DISC_SUCCESS,
2487                                             config_methods, generated_pin);
2488 }
2489
2490
2491 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2492 {
2493         struct wpa_supplicant *wpa_s = ctx;
2494         unsigned int generated_pin = 0;
2495         char params[20];
2496
2497         if (wpa_s->pending_pd_before_join &&
2498             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2499              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2500                 wpa_s->pending_pd_before_join = 0;
2501                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2502                            "join-existing-group operation");
2503                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2504                 return;
2505         }
2506
2507         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2508             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2509                 int res;
2510
2511                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2512                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2513                 if (os_snprintf_error(sizeof(params), res))
2514                         params[sizeof(params) - 1] = '\0';
2515         } else
2516                 params[0] = '\0';
2517
2518         if (config_methods & WPS_CONFIG_DISPLAY)
2519                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2520         else if (config_methods & WPS_CONFIG_KEYPAD) {
2521                 generated_pin = wps_generate_pin();
2522                 wpas_prov_disc_local_display(wpa_s, peer, params,
2523                                              generated_pin);
2524         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2525                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2526                                MACSTR "%s", MAC2STR(peer), params);
2527
2528         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2529                                             P2P_PROV_DISC_SUCCESS,
2530                                             config_methods, generated_pin);
2531 }
2532
2533
2534 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2535                                 enum p2p_prov_disc_status status,
2536                                 u32 adv_id, const u8 *adv_mac,
2537                                 const char *deferred_session_resp)
2538 {
2539         struct wpa_supplicant *wpa_s = ctx;
2540
2541         if (wpa_s->p2p_fallback_to_go_neg) {
2542                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2543                         "failed - fall back to GO Negotiation");
2544                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2545                                P2P_EVENT_FALLBACK_TO_GO_NEG
2546                                "reason=PD-failed");
2547                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2548                 return;
2549         }
2550
2551         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2552                 wpa_s->pending_pd_before_join = 0;
2553                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2554                            "join-existing-group operation (no ACK for PD "
2555                            "Req attempts)");
2556                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2557                 return;
2558         }
2559
2560         if (adv_id && adv_mac && deferred_session_resp) {
2561                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2562                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2563                                " deferred_session_resp='%s'",
2564                                MAC2STR(peer), status, adv_id,
2565                                deferred_session_resp);
2566         } else if (adv_id && adv_mac) {
2567                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2568                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2569                                MAC2STR(peer), status, adv_id);
2570         } else {
2571                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2572                                " p2p_dev_addr=" MACSTR " status=%d",
2573                                MAC2STR(peer), status);
2574         }
2575
2576         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2577                                             status, 0, 0);
2578 }
2579
2580
2581 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2582 {
2583         if (channels == NULL)
2584                 return 1; /* Assume no restrictions */
2585         return p2p_channels_includes_freq(channels, freq);
2586
2587 }
2588
2589
2590 /**
2591  * Pick the best frequency to use from all the currently used frequencies.
2592  */
2593 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2594                                         struct wpa_used_freq_data *freqs,
2595                                         unsigned int num)
2596 {
2597         unsigned int i, c;
2598
2599         /* find a candidate freq that is supported by P2P */
2600         for (c = 0; c < num; c++)
2601                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2602                         break;
2603
2604         if (c == num)
2605                 return 0;
2606
2607         /* once we have a candidate, try to find a 'better' one */
2608         for (i = c + 1; i < num; i++) {
2609                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2610                         continue;
2611
2612                 /*
2613                  * 1. Infrastructure station interfaces have higher preference.
2614                  * 2. P2P Clients have higher preference.
2615                  * 3. All others.
2616                  */
2617                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2618                         c = i;
2619                         break;
2620                 }
2621
2622                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2623                         c = i;
2624         }
2625         return freqs[c].freq;
2626 }
2627
2628
2629 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2630                                   const u8 *go_dev_addr, const u8 *ssid,
2631                                   size_t ssid_len, int *go, u8 *group_bssid,
2632                                   int *force_freq, int persistent_group,
2633                                   const struct p2p_channels *channels,
2634                                   int dev_pw_id)
2635 {
2636         struct wpa_supplicant *wpa_s = ctx;
2637         struct wpa_ssid *s;
2638         struct wpa_used_freq_data *freqs;
2639         struct wpa_supplicant *grp;
2640         int best_freq;
2641
2642         if (!persistent_group) {
2643                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2644                            " to join an active group (SSID: %s)",
2645                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2646                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2647                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2648                      == 0 ||
2649                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2650                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2651                                    "authorized invitation");
2652                         goto accept_inv;
2653                 }
2654
2655 #ifdef CONFIG_WPS_NFC
2656                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2657                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2658                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2659                         wpa_s->p2p_wps_method = WPS_NFC;
2660                         wpa_s->pending_join_wps_method = WPS_NFC;
2661                         os_memcpy(wpa_s->pending_join_dev_addr,
2662                                   go_dev_addr, ETH_ALEN);
2663                         os_memcpy(wpa_s->pending_join_iface_addr,
2664                                   bssid, ETH_ALEN);
2665                         goto accept_inv;
2666                 }
2667 #endif /* CONFIG_WPS_NFC */
2668
2669                 /*
2670                  * Do not accept the invitation automatically; notify user and
2671                  * request approval.
2672                  */
2673                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2674         }
2675
2676         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2677         if (grp) {
2678                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2679                            "running persistent group");
2680                 if (*go)
2681                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2682                 goto accept_inv;
2683         }
2684
2685         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2686             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2687                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2688                            "invitation to re-invoke a persistent group");
2689                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2690         } else if (!wpa_s->conf->persistent_reconnect)
2691                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2692
2693         for (s = wpa_s->conf->ssid; s; s = s->next) {
2694                 if (s->disabled == 2 &&
2695                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2696                     s->ssid_len == ssid_len &&
2697                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2698                         break;
2699         }
2700
2701         if (!s) {
2702                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2703                            " requested reinvocation of an unknown group",
2704                            MAC2STR(sa));
2705                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2706         }
2707
2708         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2709                 *go = 1;
2710                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2711                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2712                                    "interface is already in use - reject "
2713                                    "invitation");
2714                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2715                 }
2716                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2717         } else if (s->mode == WPAS_MODE_P2P_GO) {
2718                 *go = 1;
2719                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2720                 {
2721                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2722                                    "interface address for the group");
2723                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2724                 }
2725                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2726                           ETH_ALEN);
2727         }
2728
2729 accept_inv:
2730         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2731
2732         best_freq = 0;
2733         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2734                           sizeof(struct wpa_used_freq_data));
2735         if (freqs) {
2736                 int num_channels = wpa_s->num_multichan_concurrent;
2737                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2738                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2739                 os_free(freqs);
2740         }
2741
2742         /* Get one of the frequencies currently in use */
2743         if (best_freq > 0) {
2744                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2745                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2746
2747                 if (wpa_s->num_multichan_concurrent < 2 ||
2748                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2749                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2750                         *force_freq = best_freq;
2751                 }
2752         }
2753
2754         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2755             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2756                 if (*go == 0) {
2757                         /* We are the client */
2758                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2759                                    "running a GO but we are capable of MCC, "
2760                                    "figure out the best channel to use");
2761                         *force_freq = 0;
2762                 } else if (!freq_included(channels, *force_freq)) {
2763                         /* We are the GO, and *force_freq is not in the
2764                          * intersection */
2765                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2766                                    "in intersection but we are capable of MCC, "
2767                                    "figure out the best channel to use",
2768                                    *force_freq);
2769                         *force_freq = 0;
2770                 }
2771         }
2772
2773         return P2P_SC_SUCCESS;
2774 }
2775
2776
2777 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2778                                      const u8 *ssid, size_t ssid_len,
2779                                      const u8 *go_dev_addr, u8 status,
2780                                      int op_freq)
2781 {
2782         struct wpa_supplicant *wpa_s = ctx;
2783         struct wpa_ssid *s;
2784
2785         for (s = wpa_s->conf->ssid; s; s = s->next) {
2786                 if (s->disabled == 2 &&
2787                     s->ssid_len == ssid_len &&
2788                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2789                         break;
2790         }
2791
2792         if (status == P2P_SC_SUCCESS) {
2793                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2794                            " was accepted; op_freq=%d MHz, SSID=%s",
2795                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2796                 if (s) {
2797                         int go = s->mode == WPAS_MODE_P2P_GO;
2798                         wpas_p2p_group_add_persistent(
2799                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2800                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2801                 } else if (bssid) {
2802                         wpa_s->user_initiated_pd = 0;
2803                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2804                                       wpa_s->p2p_wps_method, 0, op_freq,
2805                                       ssid, ssid_len);
2806                 }
2807                 return;
2808         }
2809
2810         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2811                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2812                            " was rejected (status %u)", MAC2STR(sa), status);
2813                 return;
2814         }
2815
2816         if (!s) {
2817                 if (bssid) {
2818                         wpa_msg_global(wpa_s, MSG_INFO,
2819                                        P2P_EVENT_INVITATION_RECEIVED
2820                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2821                                        " bssid=" MACSTR " unknown-network",
2822                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2823                                        MAC2STR(bssid));
2824                 } else {
2825                         wpa_msg_global(wpa_s, MSG_INFO,
2826                                        P2P_EVENT_INVITATION_RECEIVED
2827                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2828                                        " unknown-network",
2829                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2830                 }
2831                 return;
2832         }
2833
2834         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2835                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2836                                "sa=" MACSTR " persistent=%d freq=%d",
2837                                MAC2STR(sa), s->id, op_freq);
2838         } else {
2839                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2840                                "sa=" MACSTR " persistent=%d",
2841                                MAC2STR(sa), s->id);
2842         }
2843 }
2844
2845
2846 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2847                                         struct wpa_ssid *ssid,
2848                                         const u8 *peer, int inv)
2849 {
2850         size_t i;
2851         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2852
2853         if (ssid == NULL)
2854                 return;
2855
2856         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2857                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2858                               ETH_ALEN) == 0)
2859                         break;
2860         }
2861         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2862                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2863                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2864                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2865                                    "due to invitation result", ssid->id);
2866                         wpas_notify_network_removed(wpa_s, ssid);
2867                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2868                         return;
2869                 }
2870                 return; /* Peer not found in client list */
2871         }
2872
2873         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2874                    "group %d client list%s",
2875                    MAC2STR(peer), ssid->id,
2876                    inv ? " due to invitation result" : "");
2877         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2878                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2879                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2880         ssid->num_p2p_clients--;
2881         if (p2p_wpa_s->conf->update_config &&
2882             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2883                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2884 }
2885
2886
2887 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2888                                           const u8 *peer)
2889 {
2890         struct wpa_ssid *ssid;
2891
2892         wpa_s = wpa_s->global->p2p_invite_group;
2893         if (wpa_s == NULL)
2894                 return; /* No known invitation group */
2895         ssid = wpa_s->current_ssid;
2896         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2897             !ssid->p2p_persistent_group)
2898                 return; /* Not operating as a GO in persistent group */
2899         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2900                                        ssid->ssid, ssid->ssid_len);
2901         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2902 }
2903
2904
2905 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2906                                    const struct p2p_channels *channels,
2907                                    const u8 *peer, int neg_freq,
2908                                    int peer_oper_freq)
2909 {
2910         struct wpa_supplicant *wpa_s = ctx;
2911         struct wpa_ssid *ssid;
2912         int freq;
2913
2914         if (bssid) {
2915                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2916                                "status=%d " MACSTR,
2917                                status, MAC2STR(bssid));
2918         } else {
2919                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2920                                "status=%d ", status);
2921         }
2922         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2923
2924         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2925                    status, MAC2STR(peer));
2926         if (wpa_s->pending_invite_ssid_id == -1) {
2927                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2928                         wpas_remove_persistent_client(wpa_s, peer);
2929                 return; /* Invitation to active group */
2930         }
2931
2932         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2933                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2934                            "invitation exchange to indicate readiness for "
2935                            "re-invocation");
2936         }
2937
2938         if (status != P2P_SC_SUCCESS) {
2939                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2940                         ssid = wpa_config_get_network(
2941                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2942                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2943                 }
2944                 wpas_p2p_remove_pending_group_interface(wpa_s);
2945                 return;
2946         }
2947
2948         ssid = wpa_config_get_network(wpa_s->conf,
2949                                       wpa_s->pending_invite_ssid_id);
2950         if (ssid == NULL) {
2951                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2952                            "data matching with invitation");
2953                 return;
2954         }
2955
2956         /*
2957          * The peer could have missed our ctrl::ack frame for Invitation
2958          * Response and continue retransmitting the frame. To reduce the
2959          * likelihood of the peer not getting successful TX status for the
2960          * Invitation Response frame, wait a short time here before starting
2961          * the persistent group so that we will remain on the current channel to
2962          * acknowledge any possible retransmission from the peer.
2963          */
2964         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2965                 "starting persistent group");
2966         os_sleep(0, 50000);
2967
2968         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
2969             freq_included(channels, neg_freq))
2970                 freq = neg_freq;
2971         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
2972                  freq_included(channels, peer_oper_freq))
2973                 freq = peer_oper_freq;
2974         else
2975                 freq = 0;
2976
2977         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
2978                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
2979         wpas_p2p_group_add_persistent(wpa_s, ssid,
2980                                       ssid->mode == WPAS_MODE_P2P_GO,
2981                                       wpa_s->p2p_persistent_go_freq,
2982                                       freq,
2983                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
2984                                       channels,
2985                                       ssid->mode == WPAS_MODE_P2P_GO ?
2986                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
2987                                       0);
2988 }
2989
2990
2991 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2992                                     unsigned int freq)
2993 {
2994         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
2995                 return 1;
2996         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
2997 }
2998
2999
3000 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3001 {
3002         reg->channel[reg->channels] = chan;
3003         reg->channels++;
3004 }
3005
3006
3007 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3008                                      struct p2p_channels *chan,
3009                                      struct p2p_channels *cli_chan)
3010 {
3011         int i, cla = 0;
3012
3013         wpa_s->global->p2p_24ghz_social_channels = 1;
3014
3015         os_memset(cli_chan, 0, sizeof(*cli_chan));
3016
3017         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3018                    "band");
3019
3020         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3021         chan->reg_class[cla].reg_class = 81;
3022         chan->reg_class[cla].channels = 0;
3023         for (i = 0; i < 11; i++) {
3024                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3025                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3026         }
3027         if (chan->reg_class[cla].channels)
3028                 cla++;
3029
3030         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3031                    "band");
3032
3033         /* Operating class 115 - 5 GHz, channels 36-48 */
3034         chan->reg_class[cla].reg_class = 115;
3035         chan->reg_class[cla].channels = 0;
3036         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3037                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3038         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3039                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3040         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3041                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3042         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3043                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3044         if (chan->reg_class[cla].channels)
3045                 cla++;
3046
3047         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3048                    "band");
3049
3050         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3051         chan->reg_class[cla].reg_class = 124;
3052         chan->reg_class[cla].channels = 0;
3053         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3054                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3055         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3056                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3057         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3058                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3059         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3060                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3061         if (chan->reg_class[cla].channels)
3062                 cla++;
3063
3064         chan->reg_classes = cla;
3065         return 0;
3066 }
3067
3068
3069 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3070                                           u16 num_modes,
3071                                           enum hostapd_hw_mode mode)
3072 {
3073         u16 i;
3074
3075         for (i = 0; i < num_modes; i++) {
3076                 if (modes[i].mode == mode)
3077                         return &modes[i];
3078         }
3079
3080         return NULL;
3081 }
3082
3083
3084 enum chan_allowed {
3085         NOT_ALLOWED, NO_IR, ALLOWED
3086 };
3087
3088 static int has_channel(struct wpa_global *global,
3089                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3090 {
3091         int i;
3092         unsigned int freq;
3093
3094         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3095                 chan * 5;
3096         if (wpas_p2p_disallowed_freq(global, freq))
3097                 return NOT_ALLOWED;
3098
3099         for (i = 0; i < mode->num_channels; i++) {
3100                 if (mode->channels[i].chan == chan) {
3101                         if (flags)
3102                                 *flags = mode->channels[i].flag;
3103                         if (mode->channels[i].flag &
3104                             (HOSTAPD_CHAN_DISABLED |
3105                              HOSTAPD_CHAN_RADAR))
3106                                 return NOT_ALLOWED;
3107                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3108                                 return NO_IR;
3109                         return ALLOWED;
3110                 }
3111         }
3112
3113         return NOT_ALLOWED;
3114 }
3115
3116
3117 struct p2p_oper_class_map {
3118         enum hostapd_hw_mode mode;
3119         u8 op_class;
3120         u8 min_chan;
3121         u8 max_chan;
3122         u8 inc;
3123         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3124 };
3125
3126 static const struct p2p_oper_class_map op_class[] = {
3127         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3128 #if 0 /* Do not enable HT40 on 2 GHz for now */
3129         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3130         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3131 #endif
3132         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3133         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3134         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3135         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3136         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3137         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3138         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3139
3140         /*
3141          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3142          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3143          * 80 MHz, but currently use the following definition for simplicity
3144          * (these center frequencies are not actual channels, which makes
3145          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3146          * removing invalid channels.
3147          */
3148         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3149         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3150         { -1, 0, 0, 0, 0, BW20 }
3151 };
3152
3153
3154 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3155                                      struct hostapd_hw_modes *mode,
3156                                      u8 channel)
3157 {
3158         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3159         unsigned int i;
3160
3161         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3162                 return 0;
3163
3164         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3165                 /*
3166                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3167                  * so the center channel is 6 channels away from the start/end.
3168                  */
3169                 if (channel >= center_channels[i] - 6 &&
3170                     channel <= center_channels[i] + 6)
3171                         return center_channels[i];
3172
3173         return 0;
3174 }
3175
3176
3177 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3178                                                struct hostapd_hw_modes *mode,
3179                                                u8 channel, u8 bw)
3180 {
3181         u8 center_chan;
3182         int i, flags;
3183         enum chan_allowed res, ret = ALLOWED;
3184
3185         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3186         if (!center_chan)
3187                 return NOT_ALLOWED;
3188         if (center_chan >= 58 && center_chan <= 138)
3189                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3190
3191         /* check all the channels are available */
3192         for (i = 0; i < 4; i++) {
3193                 int adj_chan = center_chan - 6 + i * 4;
3194
3195                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3196                 if (res == NOT_ALLOWED)
3197                         return NOT_ALLOWED;
3198                 if (res == NO_IR)
3199                         ret = NO_IR;
3200
3201                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3202                         return NOT_ALLOWED;
3203                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3204                         return NOT_ALLOWED;
3205                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3206                         return NOT_ALLOWED;
3207                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3208                         return NOT_ALLOWED;
3209         }
3210
3211         return ret;
3212 }
3213
3214
3215 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3216                                                  struct hostapd_hw_modes *mode,
3217                                                  u8 channel, u8 bw)
3218 {
3219         int flag = 0;
3220         enum chan_allowed res, res2;
3221
3222         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3223         if (bw == BW40MINUS) {
3224                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3225                         return NOT_ALLOWED;
3226                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3227         } else if (bw == BW40PLUS) {
3228                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3229                         return NOT_ALLOWED;
3230                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3231         } else if (bw == BW80) {
3232                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3233         }
3234
3235         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3236                 return NOT_ALLOWED;
3237         if (res == NO_IR || res2 == NO_IR)
3238                 return NO_IR;
3239         return res;
3240 }
3241
3242
3243 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3244                                    struct p2p_channels *chan,
3245                                    struct p2p_channels *cli_chan)
3246 {
3247         struct hostapd_hw_modes *mode;
3248         int cla, op, cli_cla;
3249
3250         if (wpa_s->hw.modes == NULL) {
3251                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3252                            "of all supported channels; assume dualband "
3253                            "support");
3254                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3255         }
3256
3257         cla = cli_cla = 0;
3258
3259         for (op = 0; op_class[op].op_class; op++) {
3260                 const struct p2p_oper_class_map *o = &op_class[op];
3261                 u8 ch;
3262                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3263
3264                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3265                 if (mode == NULL)
3266                         continue;
3267                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3268                         wpa_s->global->p2p_24ghz_social_channels = 1;
3269                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3270                         enum chan_allowed res;
3271                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3272                         if (res == ALLOWED) {
3273                                 if (reg == NULL) {
3274                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3275                                                    o->op_class);
3276                                         reg = &chan->reg_class[cla];
3277                                         cla++;
3278                                         reg->reg_class = o->op_class;
3279                                 }
3280                                 reg->channel[reg->channels] = ch;
3281                                 reg->channels++;
3282                         } else if (res == NO_IR &&
3283                                    wpa_s->conf->p2p_add_cli_chan) {
3284                                 if (cli_reg == NULL) {
3285                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3286                                                    o->op_class);
3287                                         cli_reg = &cli_chan->reg_class[cli_cla];
3288                                         cli_cla++;
3289                                         cli_reg->reg_class = o->op_class;
3290                                 }
3291                                 cli_reg->channel[cli_reg->channels] = ch;
3292                                 cli_reg->channels++;
3293                         }
3294                 }
3295                 if (reg) {
3296                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3297                                     reg->channel, reg->channels);
3298                 }
3299                 if (cli_reg) {
3300                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3301                                     cli_reg->channel, cli_reg->channels);
3302                 }
3303         }
3304
3305         chan->reg_classes = cla;
3306         cli_chan->reg_classes = cli_cla;
3307
3308         return 0;
3309 }
3310
3311
3312 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3313                            struct hostapd_hw_modes *mode, u8 channel)
3314 {
3315         int op;
3316         enum chan_allowed ret;
3317
3318         for (op = 0; op_class[op].op_class; op++) {
3319                 const struct p2p_oper_class_map *o = &op_class[op];
3320                 u8 ch;
3321
3322                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3323                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3324                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3325                             ch != channel)
3326                                 continue;
3327                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3328                         if (ret == ALLOWED)
3329                                 return (o->bw == BW40MINUS) ? -1 : 1;
3330                 }
3331         }
3332         return 0;
3333 }
3334
3335
3336 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3337                               struct hostapd_hw_modes *mode, u8 channel)
3338 {
3339         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3340                 return 0;
3341
3342         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3343 }
3344
3345
3346 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3347                         size_t buf_len)
3348 {
3349         struct wpa_supplicant *wpa_s = ctx;
3350
3351         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3352                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3353                         break;
3354         }
3355         if (wpa_s == NULL)
3356                 return -1;
3357
3358         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3359 }
3360
3361
3362 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3363                                               const u8 *ssid, size_t ssid_len)
3364 {
3365         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3366                 struct wpa_ssid *s = wpa_s->current_ssid;
3367                 if (s == NULL)
3368                         continue;
3369                 if (s->mode != WPAS_MODE_P2P_GO &&
3370                     s->mode != WPAS_MODE_AP &&
3371                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3372                         continue;
3373                 if (s->ssid_len != ssid_len ||
3374                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3375                         continue;
3376                 return wpa_s;
3377         }
3378
3379         return NULL;
3380
3381 }
3382
3383
3384 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3385                                                   const u8 *peer_dev_addr)
3386 {
3387         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3388                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3389                 if (ssid == NULL)
3390                         continue;
3391                 if (ssid->mode != WPAS_MODE_INFRA)
3392                         continue;
3393                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3394                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3395                         continue;
3396                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3397                         return wpa_s;
3398         }
3399
3400         return NULL;
3401 }
3402
3403
3404 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3405 {
3406         struct wpa_supplicant *wpa_s = ctx;
3407
3408         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3409 }
3410
3411
3412 static int wpas_is_concurrent_session_active(void *ctx)
3413 {
3414         struct wpa_supplicant *wpa_s = ctx;
3415         struct wpa_supplicant *ifs;
3416
3417         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3418                 if (ifs == wpa_s)
3419                         continue;
3420                 if (ifs->wpa_state > WPA_ASSOCIATED)
3421                         return 1;
3422         }
3423         return 0;
3424 }
3425
3426
3427 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3428 {
3429         struct wpa_supplicant *wpa_s = ctx;
3430         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3431 }
3432
3433
3434 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3435                                   const char *conf_p2p_dev)
3436 {
3437         struct wpa_interface iface;
3438         struct wpa_supplicant *p2pdev_wpa_s;
3439         char ifname[100];
3440         char force_name[100];
3441         int ret;
3442
3443         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3444                           wpa_s->ifname);
3445         if (os_snprintf_error(sizeof(ifname), ret))
3446                 return -1;
3447         force_name[0] = '\0';
3448         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3449         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3450                              force_name, wpa_s->pending_interface_addr, NULL);
3451         if (ret < 0) {
3452                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3453                 return ret;
3454         }
3455         os_strlcpy(wpa_s->pending_interface_name, ifname,
3456                    sizeof(wpa_s->pending_interface_name));
3457
3458         os_memset(&iface, 0, sizeof(iface));
3459         iface.p2p_mgmt = 1;
3460         iface.ifname = wpa_s->pending_interface_name;
3461         iface.driver = wpa_s->driver->name;
3462         iface.driver_param = wpa_s->conf->driver_param;
3463
3464         /*
3465          * If a P2P Device configuration file was given, use it as the interface
3466          * configuration file (instead of using parent's configuration file.
3467          */
3468         if (conf_p2p_dev) {
3469                 iface.confname = conf_p2p_dev;
3470                 iface.ctrl_interface = NULL;
3471         } else {
3472                 iface.confname = wpa_s->confname;
3473                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3474         }
3475
3476         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3477         if (!p2pdev_wpa_s) {
3478                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3479                 return -1;
3480         }
3481
3482         wpa_s->pending_interface_name[0] = '\0';
3483         return 0;
3484 }
3485
3486
3487 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3488                                const u8 *noa, size_t noa_len)
3489 {
3490         struct wpa_supplicant *wpa_s, *intf = ctx;
3491         char hex[100];
3492
3493         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3494                 if (wpa_s->waiting_presence_resp)
3495                         break;
3496         }
3497         if (!wpa_s) {
3498                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3499                 return;
3500         }
3501         wpa_s->waiting_presence_resp = 0;
3502
3503         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3504         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3505                 " status=%u noa=%s", MAC2STR(src), status, hex);
3506 }
3507
3508
3509 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3510                                      size_t ssid_len, u8 *go_dev_addr,
3511                                      u8 *ret_ssid, size_t *ret_ssid_len,
3512                                      u8 *intended_iface_addr)
3513 {
3514         struct wpa_supplicant *wpa_s = ctx;
3515         struct wpa_ssid *s;
3516
3517         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3518         if (s) {
3519                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3520                 *ret_ssid_len = s->ssid_len;
3521                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3522
3523                 if (s->mode != WPAS_MODE_P2P_GO) {
3524                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3525                 } else if (wpas_p2p_create_iface(wpa_s)) {
3526                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3527                                 return 0;
3528
3529                         os_memcpy(intended_iface_addr,
3530                                   wpa_s->pending_interface_addr, ETH_ALEN);
3531                 } else {
3532                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3533                                   ETH_ALEN);
3534                 }
3535                 return 1;
3536         }
3537
3538         return 0;
3539 }
3540
3541
3542 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3543                             u8 *ssid, size_t *ssid_len, int *group_iface)
3544 {
3545         struct wpa_supplicant *wpa_s = ctx;
3546         struct wpa_ssid *s;
3547         u8 bssid[ETH_ALEN];
3548
3549         /*
3550          * group_iface will be set to 1 only if a dedicated interface for P2P
3551          * role is required. First, we try to reuse an active GO. However,
3552          * if it is not present, we will try to reactivate an existing
3553          * persistent group and set group_iface to 1, so the caller will know
3554          * that the pending interface should be used.
3555          */
3556         *group_iface = 0;
3557         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3558         if (!s) {
3559                 s = wpas_p2p_get_persistent_go(wpa_s);
3560                 *group_iface = wpas_p2p_create_iface(wpa_s);
3561                 if (s)
3562                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3563                 else
3564                         return 0;
3565         }
3566
3567         os_memcpy(intended_addr, bssid, ETH_ALEN);
3568         os_memcpy(ssid, s->ssid, s->ssid_len);
3569         *ssid_len = s->ssid_len;
3570
3571         return 1;
3572 }
3573
3574
3575 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3576                                     const u8 *ssid, size_t ssid_len)
3577 {
3578         struct wpa_supplicant *wpa_s = ctx;
3579         struct wpa_ssid *s;
3580         int save_config = 0;
3581         size_t i;
3582
3583         /* Start with our first choice of Persistent Groups */
3584         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3585                 if (go && ssid && ssid_len &&
3586                     s->ssid_len == ssid_len &&
3587                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3588                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3589                         break;
3590
3591                 /* Remove stale persistent group */
3592                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3593                         wpa_config_remove_network(wpa_s->conf, s->id);
3594                         save_config = 1;
3595                         continue;
3596                 }
3597
3598                 for (i = 0; i < s->num_p2p_clients; i++) {
3599                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3600                                       peer, ETH_ALEN) != 0)
3601                                 continue;
3602
3603                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3604                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3605                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3606                         break;
3607                 }
3608                 s->num_p2p_clients--;
3609                 save_config = 1;
3610         }
3611
3612         if (save_config)
3613                 p2p_config_write(wpa_s);
3614
3615         /* Return TRUE if valid SSID remains */
3616         return s != NULL;
3617 }
3618
3619
3620 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3621                                        const u8 *feat_cap, size_t feat_cap_len)
3622 {
3623         static const char pref[] = " feature_cap=";
3624         int ret;
3625
3626         buf[0] = '\0';
3627
3628         /*
3629          * We expect a feature capability to contain at least one byte to be
3630          * reported. The string buffer provided by the caller function is
3631          * expected to be big enough to contain all bytes of the attribute for
3632          * known specifications. This function truncates the reported bytes if
3633          * the feature capability data exceeds the string buffer size.
3634          */
3635         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3636                 return;
3637
3638         os_memcpy(buf, pref, sizeof(pref));
3639         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3640                                buf_len - sizeof(pref) + 1,
3641                                feat_cap, feat_cap_len);
3642
3643         if (ret != (2 * (int) feat_cap_len))
3644                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3645 }
3646
3647
3648 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3649                                     const u8 *adv_mac, const u8 *ses_mac,
3650                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3651                                     u8 conncap, int passwd_id,
3652                                     const u8 *persist_ssid,
3653                                     size_t persist_ssid_size, int response_done,
3654                                     int prov_start, const char *session_info,
3655                                     const u8 *feat_cap, size_t feat_cap_len)
3656 {
3657         struct wpa_supplicant *wpa_s = ctx;
3658         u8 mac[ETH_ALEN];
3659         struct wpa_ssid *persistent_go, *stale, *s;
3660         int save_config = 0;
3661         struct wpa_supplicant *go_wpa_s;
3662         char feat_cap_str[256];
3663
3664         if (!dev)
3665                 return;
3666
3667         os_memset(mac, 0, ETH_ALEN);
3668         if (!adv_mac)
3669                 adv_mac = mac;
3670         if (!ses_mac)
3671                 ses_mac = mac;
3672         if (!grp_mac)
3673                 grp_mac = mac;
3674
3675         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3676                                    feat_cap, feat_cap_len);
3677
3678         if (prov_start) {
3679                 if (session_info == NULL) {
3680                         wpa_msg_global(wpa_s, MSG_INFO,
3681                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3682                                        " adv_id=%x conncap=%x"
3683                                        " adv_mac=" MACSTR
3684                                        " session=%x mac=" MACSTR
3685                                        " dev_passwd_id=%d%s",
3686                                        MAC2STR(dev), adv_id, conncap,
3687                                        MAC2STR(adv_mac),
3688                                        ses_id, MAC2STR(ses_mac),
3689                                        passwd_id, feat_cap_str);
3690                 } else {
3691                         wpa_msg_global(wpa_s, MSG_INFO,
3692                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3693                                        " adv_id=%x conncap=%x"
3694                                        " adv_mac=" MACSTR
3695                                        " session=%x mac=" MACSTR
3696                                        " dev_passwd_id=%d info='%s'%s",
3697                                        MAC2STR(dev), adv_id, conncap,
3698                                        MAC2STR(adv_mac),
3699                                        ses_id, MAC2STR(ses_mac),
3700                                        passwd_id, session_info, feat_cap_str);
3701                 }
3702                 return;
3703         }
3704
3705         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3706         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3707
3708         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3709                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3710                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3711
3712                 if (persistent_go && !persistent_go->num_p2p_clients) {
3713                         /* remove empty persistent GO */
3714                         wpa_config_remove_network(wpa_s->conf,
3715                                                   persistent_go->id);
3716                 }
3717
3718                 wpa_msg_global(wpa_s, MSG_INFO,
3719                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3720                                " status=%d"
3721                                " adv_id=%x adv_mac=" MACSTR
3722                                " session=%x mac=" MACSTR "%s",
3723                                MAC2STR(dev), status,
3724                                adv_id, MAC2STR(adv_mac),
3725                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3726                 return;
3727         }
3728
3729         /* Clean up stale persistent groups with this device */
3730         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3731                                     persist_ssid_size);
3732
3733         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3734             os_memcmp(grp_mac, mac, ETH_ALEN) == 0) {
3735                 wpa_dbg(wpa_s, MSG_ERROR,
3736                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3737                 return;
3738         }
3739
3740         for (;;) {
3741                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3742                 if (!stale)
3743                         break;
3744
3745                 if (s && s->ssid_len == stale->ssid_len &&
3746                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3747                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3748                         break;
3749
3750                 /* Remove stale persistent group */
3751                 if (stale->mode != WPAS_MODE_P2P_GO ||
3752                     stale->num_p2p_clients <= 1) {
3753                         wpa_config_remove_network(wpa_s->conf, stale->id);
3754                 } else {
3755                         size_t i;
3756
3757                         for (i = 0; i < stale->num_p2p_clients; i++) {
3758                                 if (os_memcmp(stale->p2p_client_list +
3759                                               i * ETH_ALEN,
3760                                               dev, ETH_ALEN) == 0) {
3761                                         os_memmove(stale->p2p_client_list +
3762                                                    i * ETH_ALEN,
3763                                                    stale->p2p_client_list +
3764                                                    (i + 1) * ETH_ALEN,
3765                                                    (stale->num_p2p_clients -
3766                                                     i - 1) * ETH_ALEN);
3767                                         break;
3768                                 }
3769                         }
3770                         stale->num_p2p_clients--;
3771                 }
3772                 save_config = 1;
3773         }
3774
3775         if (save_config)
3776                 p2p_config_write(wpa_s);
3777
3778         if (s) {
3779                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3780                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3781
3782                 if (persistent_go && s != persistent_go &&
3783                     !persistent_go->num_p2p_clients) {
3784                         /* remove empty persistent GO */
3785                         wpa_config_remove_network(wpa_s->conf,
3786                                                   persistent_go->id);
3787                         /* Save config */
3788                 }
3789
3790                 wpa_msg_global(wpa_s, MSG_INFO,
3791                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3792                                " status=%d"
3793                                " adv_id=%x adv_mac=" MACSTR
3794                                " session=%x mac=" MACSTR
3795                                " persist=%d%s",
3796                                MAC2STR(dev), status,
3797                                adv_id, MAC2STR(adv_mac),
3798                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3799                 return;
3800         }
3801
3802         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3803                 /*
3804                  * We need to copy the interface name. Simply saving a
3805                  * pointer isn't enough, since if we use pending_interface_name
3806                  * it will be overwritten when the group is added.
3807                  */
3808                 char go_ifname[100];
3809
3810                 go_ifname[0] = '\0';
3811                 if (!go_wpa_s) {
3812                         wpa_s->global->pending_p2ps_group = 1;
3813
3814                         if (!wpas_p2p_create_iface(wpa_s))
3815                                 os_memcpy(go_ifname, wpa_s->ifname,
3816                                           sizeof(go_ifname));
3817                         else if (wpa_s->pending_interface_name[0])
3818                                 os_memcpy(go_ifname,
3819                                           wpa_s->pending_interface_name,
3820                                           sizeof(go_ifname));
3821
3822                         if (!go_ifname[0]) {
3823                                 wpas_p2ps_prov_complete(
3824                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3825                                         dev, adv_mac, ses_mac,
3826                                         NULL, adv_id, ses_id, 0, 0,
3827                                         NULL, 0, 0, 0, NULL, NULL, 0);
3828                                 return;
3829                         }
3830
3831                         /* If PD Resp complete, start up the GO */
3832                         if (response_done && persistent_go) {
3833                                 wpas_p2p_group_add_persistent(
3834                                         wpa_s, persistent_go,
3835                                         0, 0, 0, 0, 0, NULL,
3836                                         persistent_go->mode ==
3837                                         WPAS_MODE_P2P_GO ?
3838                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3839                                         0);
3840                         } else if (response_done) {
3841                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3842                         }
3843
3844                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3845                                 os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3846                                 wpa_s->p2ps_join_addr_valid = 1;
3847                                 wpa_dbg(wpa_s, MSG_DEBUG,
3848                                         "P2PS: Saving PIN for " MACSTR,
3849                                         MAC2STR(dev));
3850                         }
3851                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3852                         os_memcpy(go_ifname, go_wpa_s->ifname,
3853                                   sizeof(go_ifname));
3854
3855                         wpa_dbg(go_wpa_s, MSG_DEBUG,
3856                                 "P2P: Setting PIN-1 For " MACSTR, MAC2STR(dev));
3857                         wpa_supplicant_ap_wps_pin(go_wpa_s, dev, "12345670",
3858                                                   NULL, 0, 0);
3859
3860                         os_memcpy(wpa_s->p2ps_join_addr, dev, ETH_ALEN);
3861                         wpa_s->p2ps_join_addr_valid = 1;
3862                         wpa_dbg(wpa_s, MSG_DEBUG,
3863                                 "P2PS: Saving PIN for " MACSTR, MAC2STR(dev));
3864                 }
3865
3866                 wpa_msg_global(wpa_s, MSG_INFO,
3867                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3868                                " status=%d conncap=%x"
3869                                " adv_id=%x adv_mac=" MACSTR
3870                                " session=%x mac=" MACSTR
3871                                " dev_passwd_id=%d go=%s%s",
3872                                MAC2STR(dev), status, conncap,
3873                                adv_id, MAC2STR(adv_mac),
3874                                ses_id, MAC2STR(ses_mac),
3875                                passwd_id, go_ifname, feat_cap_str);
3876                 return;
3877         }
3878
3879         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3880                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3881
3882         if (persistent_go && !persistent_go->num_p2p_clients) {
3883                 /* remove empty persistent GO */
3884                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3885         }
3886
3887         if (conncap == P2PS_SETUP_CLIENT) {
3888                 wpa_msg_global(wpa_s, MSG_INFO,
3889                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3890                                " status=%d conncap=%x"
3891                                " adv_id=%x adv_mac=" MACSTR
3892                                " session=%x mac=" MACSTR
3893                                " dev_passwd_id=%d join=" MACSTR "%s",
3894                                MAC2STR(dev), status, conncap,
3895                                adv_id, MAC2STR(adv_mac),
3896                                ses_id, MAC2STR(ses_mac),
3897                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
3898         } else {
3899                 wpa_msg_global(wpa_s, MSG_INFO,
3900                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3901                                " status=%d conncap=%x"
3902                                " adv_id=%x adv_mac=" MACSTR
3903                                " session=%x mac=" MACSTR
3904                                " dev_passwd_id=%d%s",
3905                                MAC2STR(dev), status, conncap,
3906                                adv_id, MAC2STR(adv_mac),
3907                                ses_id, MAC2STR(ses_mac),
3908                                passwd_id, feat_cap_str);
3909         }
3910 }
3911
3912
3913 static int _wpas_p2p_in_progress(void *ctx)
3914 {
3915         struct wpa_supplicant *wpa_s = ctx;
3916         return wpas_p2p_in_progress(wpa_s);
3917 }
3918
3919
3920 static int wpas_prov_disc_resp_cb(void *ctx)
3921 {
3922         struct wpa_supplicant *wpa_s = ctx;
3923         struct wpa_ssid *persistent_go;
3924
3925         if (!wpa_s->global->pending_p2ps_group)
3926                 return 0;
3927
3928         wpa_s->global->pending_p2ps_group = 0;
3929
3930         if (wpas_p2p_get_go_group(wpa_s))
3931                 return 0;
3932         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3933
3934         if (persistent_go) {
3935                 wpas_p2p_group_add_persistent(
3936                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
3937                         persistent_go->mode == WPAS_MODE_P2P_GO ?
3938                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3939         } else {
3940                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3941         }
3942
3943         return 1;
3944 }
3945
3946
3947 /**
3948  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3949  * @global: Pointer to global data from wpa_supplicant_init()
3950  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3951  * Returns: 0 on success, -1 on failure
3952  */
3953 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3954 {
3955         struct p2p_config p2p;
3956         int i;
3957
3958         if (wpa_s->conf->p2p_disabled)
3959                 return 0;
3960
3961         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3962                 return 0;
3963
3964         if (global->p2p)
3965                 return 0;
3966
3967         os_memset(&p2p, 0, sizeof(p2p));
3968         p2p.cb_ctx = wpa_s;
3969         p2p.debug_print = wpas_p2p_debug_print;
3970         p2p.p2p_scan = wpas_p2p_scan;
3971         p2p.send_action = wpas_send_action;
3972         p2p.send_action_done = wpas_send_action_done;
3973         p2p.go_neg_completed = wpas_go_neg_completed;
3974         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3975         p2p.dev_found = wpas_dev_found;
3976         p2p.dev_lost = wpas_dev_lost;
3977         p2p.find_stopped = wpas_find_stopped;
3978         p2p.start_listen = wpas_start_listen;
3979         p2p.stop_listen = wpas_stop_listen;
3980         p2p.send_probe_resp = wpas_send_probe_resp;
3981         p2p.sd_request = wpas_sd_request;
3982         p2p.sd_response = wpas_sd_response;
3983         p2p.prov_disc_req = wpas_prov_disc_req;
3984         p2p.prov_disc_resp = wpas_prov_disc_resp;
3985         p2p.prov_disc_fail = wpas_prov_disc_fail;
3986         p2p.invitation_process = wpas_invitation_process;
3987         p2p.invitation_received = wpas_invitation_received;
3988         p2p.invitation_result = wpas_invitation_result;
3989         p2p.get_noa = wpas_get_noa;
3990         p2p.go_connected = wpas_go_connected;
3991         p2p.presence_resp = wpas_presence_resp;
3992         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3993         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3994         p2p.get_persistent_group = wpas_get_persistent_group;
3995         p2p.get_go_info = wpas_get_go_info;
3996         p2p.remove_stale_groups = wpas_remove_stale_groups;
3997         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
3998         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
3999         p2p.p2ps_group_capability = p2ps_group_capability;
4000
4001         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4002         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4003         p2p.dev_name = wpa_s->conf->device_name;
4004         p2p.manufacturer = wpa_s->conf->manufacturer;
4005         p2p.model_name = wpa_s->conf->model_name;
4006         p2p.model_number = wpa_s->conf->model_number;
4007         p2p.serial_number = wpa_s->conf->serial_number;
4008         if (wpa_s->wps) {
4009                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4010                 p2p.config_methods = wpa_s->wps->config_methods;
4011         }
4012
4013         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4014                 wpa_printf(MSG_ERROR,
4015                            "P2P: Failed to configure supported channel list");
4016                 return -1;
4017         }
4018
4019         if (wpa_s->conf->p2p_listen_reg_class &&
4020             wpa_s->conf->p2p_listen_channel) {
4021                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4022                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4023                 p2p.channel_forced = 1;
4024         } else {
4025                 /*
4026                  * Pick one of the social channels randomly as the listen
4027                  * channel.
4028                  */
4029                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4030                                                  &p2p.channel) != 0) {
4031                         wpa_printf(MSG_INFO,
4032                                    "P2P: No social channels supported by the driver - do not enable P2P");
4033                         return 0;
4034                 }
4035                 p2p.channel_forced = 0;
4036         }
4037         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4038                    p2p.reg_class, p2p.channel);
4039
4040         if (wpa_s->conf->p2p_oper_reg_class &&
4041             wpa_s->conf->p2p_oper_channel) {
4042                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4043                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4044                 p2p.cfg_op_channel = 1;
4045                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4046                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4047
4048         } else {
4049                 /*
4050                  * Use random operation channel from 2.4 GHz band social
4051                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4052                  * other preference is indicated.
4053                  */
4054                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4055                                                  &p2p.op_channel) != 0) {
4056                         wpa_printf(MSG_ERROR,
4057                                    "P2P: Failed to select random social channel as operation channel");
4058                         return -1;
4059                 }
4060                 p2p.cfg_op_channel = 0;
4061                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4062                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4063         }
4064
4065         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4066                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4067                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4068         }
4069
4070         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4071                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4072                 p2p.country[2] = 0x04;
4073         } else
4074                 os_memcpy(p2p.country, "XX\x04", 3);
4075
4076         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4077                   WPS_DEV_TYPE_LEN);
4078
4079         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4080         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4081                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4082
4083         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4084                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4085
4086         p2p.max_peers = 100;
4087
4088         if (wpa_s->conf->p2p_ssid_postfix) {
4089                 p2p.ssid_postfix_len =
4090                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4091                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4092                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4093                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4094                           p2p.ssid_postfix_len);
4095         }
4096
4097         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4098
4099         p2p.max_listen = wpa_s->max_remain_on_chan;
4100
4101         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4102             wpa_s->conf->p2p_passphrase_len <= 63)
4103                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4104         else
4105                 p2p.passphrase_len = 8;
4106
4107         global->p2p = p2p_init(&p2p);
4108         if (global->p2p == NULL)
4109                 return -1;
4110         global->p2p_init_wpa_s = wpa_s;
4111
4112         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4113                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4114                         continue;
4115                 p2p_add_wps_vendor_extension(
4116                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4117         }
4118
4119         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4120
4121         return 0;
4122 }
4123
4124
4125 /**
4126  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4127  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4128  *
4129  * This function deinitialize per-interface P2P data.
4130  */
4131 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4132 {
4133         if (wpa_s->driver && wpa_s->drv_priv)
4134                 wpa_drv_probe_req_report(wpa_s, 0);
4135
4136         if (wpa_s->go_params) {
4137                 /* Clear any stored provisioning info */
4138                 p2p_clear_provisioning_info(
4139                         wpa_s->global->p2p,
4140                         wpa_s->go_params->peer_device_addr);
4141         }
4142
4143         os_free(wpa_s->go_params);
4144         wpa_s->go_params = NULL;
4145         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4146         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4147         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4148         wpa_s->p2p_long_listen = 0;
4149         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4150         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4151         wpas_p2p_remove_pending_group_interface(wpa_s);
4152         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4153         wpas_p2p_listen_work_done(wpa_s);
4154         if (wpa_s->p2p_send_action_work) {
4155                 os_free(wpa_s->p2p_send_action_work->ctx);
4156                 radio_work_done(wpa_s->p2p_send_action_work);
4157                 wpa_s->p2p_send_action_work = NULL;
4158         }
4159         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4160
4161         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4162         wpa_s->p2p_oob_dev_pw = NULL;
4163
4164         os_free(wpa_s->p2p_group_common_freqs);
4165         wpa_s->p2p_group_common_freqs = NULL;
4166         wpa_s->p2p_group_common_freqs_num = 0;
4167
4168         /* TODO: remove group interface from the driver if this wpa_s instance
4169          * is on top of a P2P group interface */
4170 }
4171
4172
4173 /**
4174  * wpas_p2p_deinit_global - Deinitialize global P2P module
4175  * @global: Pointer to global data from wpa_supplicant_init()
4176  *
4177  * This function deinitializes the global (per device) P2P module.
4178  */
4179 static void wpas_p2p_deinit_global(struct wpa_global *global)
4180 {
4181         struct wpa_supplicant *wpa_s, *tmp;
4182
4183         wpa_s = global->ifaces;
4184
4185         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4186
4187         /* Remove remaining P2P group interfaces */
4188         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4189                 wpa_s = wpa_s->next;
4190         while (wpa_s) {
4191                 tmp = global->ifaces;
4192                 while (tmp &&
4193                        (tmp == wpa_s ||
4194                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4195                         tmp = tmp->next;
4196                 }
4197                 if (tmp == NULL)
4198                         break;
4199                 /* Disconnect from the P2P group and deinit the interface */
4200                 wpas_p2p_disconnect(tmp);
4201         }
4202
4203         /*
4204          * Deinit GO data on any possibly remaining interface (if main
4205          * interface is used as GO).
4206          */
4207         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4208                 if (wpa_s->ap_iface)
4209                         wpas_p2p_group_deinit(wpa_s);
4210         }
4211
4212         p2p_deinit(global->p2p);
4213         global->p2p = NULL;
4214         global->p2p_init_wpa_s = NULL;
4215 }
4216
4217
4218 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4219 {
4220         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4221             wpa_s->conf->p2p_no_group_iface)
4222                 return 0; /* separate interface disabled per configuration */
4223         if (wpa_s->drv_flags &
4224             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4225              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4226                 return 1; /* P2P group requires a new interface in every case
4227                            */
4228         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4229                 return 0; /* driver does not support concurrent operations */
4230         if (wpa_s->global->ifaces->next)
4231                 return 1; /* more that one interface already in use */
4232         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4233                 return 1; /* this interface is already in use */
4234         return 0;
4235 }
4236
4237
4238 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4239                                  const u8 *peer_addr,
4240                                  enum p2p_wps_method wps_method,
4241                                  int go_intent, const u8 *own_interface_addr,
4242                                  unsigned int force_freq, int persistent_group,
4243                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4244 {
4245         if (persistent_group && wpa_s->conf->persistent_reconnect)
4246                 persistent_group = 2;
4247
4248         /*
4249          * Increase GO config timeout if HT40 is used since it takes some time
4250          * to scan channels for coex purposes before the BSS can be started.
4251          */
4252         p2p_set_config_timeout(wpa_s->global->p2p,
4253                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4254
4255         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4256                            go_intent, own_interface_addr, force_freq,
4257                            persistent_group, ssid ? ssid->ssid : NULL,
4258                            ssid ? ssid->ssid_len : 0,
4259                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4260                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4261                            0);
4262 }
4263
4264
4265 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4266                                 const u8 *peer_addr,
4267                                 enum p2p_wps_method wps_method,
4268                                 int go_intent, const u8 *own_interface_addr,
4269                                 unsigned int force_freq, int persistent_group,
4270                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4271 {
4272         if (persistent_group && wpa_s->conf->persistent_reconnect)
4273                 persistent_group = 2;
4274
4275         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4276                              go_intent, own_interface_addr, force_freq,
4277                              persistent_group, ssid ? ssid->ssid : NULL,
4278                              ssid ? ssid->ssid_len : 0, pref_freq,
4279                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4280                              0);
4281 }
4282
4283
4284 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4285 {
4286         wpa_s->p2p_join_scan_count++;
4287         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4288                    wpa_s->p2p_join_scan_count);
4289         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4290                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4291                            " for join operationg - stop join attempt",
4292                            MAC2STR(wpa_s->pending_join_iface_addr));
4293                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4294                 if (wpa_s->p2p_auto_pd) {
4295                         wpa_s->p2p_auto_pd = 0;
4296                         wpa_msg_global(wpa_s, MSG_INFO,
4297                                        P2P_EVENT_PROV_DISC_FAILURE
4298                                        " p2p_dev_addr=" MACSTR " status=N/A",
4299                                        MAC2STR(wpa_s->pending_join_dev_addr));
4300                         return;
4301                 }
4302                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4303                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4304         }
4305 }
4306
4307
4308 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4309 {
4310         int res;
4311         unsigned int num, i;
4312         struct wpa_used_freq_data *freqs;
4313
4314         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4315                 /* Multiple channels are supported and not all are in use */
4316                 return 0;
4317         }
4318
4319         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4320                           sizeof(struct wpa_used_freq_data));
4321         if (!freqs)
4322                 return 1;
4323
4324         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4325                                         wpa_s->num_multichan_concurrent);
4326
4327         for (i = 0; i < num; i++) {
4328                 if (freqs[i].freq == freq) {
4329                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4330                                    freq);
4331                         res = 0;
4332                         goto exit_free;
4333                 }
4334         }
4335
4336         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4337         res = 1;
4338
4339 exit_free:
4340         os_free(freqs);
4341         return res;
4342 }
4343
4344
4345 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4346                             const u8 *peer_dev_addr)
4347 {
4348         struct wpa_bss *bss;
4349         int updated;
4350
4351         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4352         if (bss == NULL)
4353                 return -1;
4354         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4355                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4356                            "last scan");
4357                 return 0;
4358         }
4359
4360         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4361                                     &bss->last_update);
4362         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4363                    "%ld.%06ld (%supdated in last scan)",
4364                    bss->last_update.sec, bss->last_update.usec,
4365                    updated ? "": "not ");
4366
4367         return updated;
4368 }
4369
4370
4371 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4372                                    struct wpa_scan_results *scan_res)
4373 {
4374         struct wpa_bss *bss = NULL;
4375         int freq;
4376         u8 iface_addr[ETH_ALEN];
4377
4378         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4379
4380         if (wpa_s->global->p2p_disabled)
4381                 return;
4382
4383         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4384                    scan_res ? (int) scan_res->num : -1,
4385                    wpa_s->p2p_auto_join ? "auto_" : "");
4386
4387         if (scan_res)
4388                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4389
4390         if (wpa_s->p2p_auto_pd) {
4391                 int join = wpas_p2p_peer_go(wpa_s,
4392                                             wpa_s->pending_join_dev_addr);
4393                 if (join == 0 &&
4394                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4395                         wpa_s->auto_pd_scan_retry++;
4396                         bss = wpa_bss_get_bssid_latest(
4397                                 wpa_s, wpa_s->pending_join_dev_addr);
4398                         if (bss) {
4399                                 freq = bss->freq;
4400                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4401                                            "the peer " MACSTR " at %d MHz",
4402                                            wpa_s->auto_pd_scan_retry,
4403                                            MAC2STR(wpa_s->
4404                                                    pending_join_dev_addr),
4405                                            freq);
4406                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4407                                 return;
4408                         }
4409                 }
4410
4411                 if (join < 0)
4412                         join = 0;
4413
4414                 wpa_s->p2p_auto_pd = 0;
4415                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4416                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4417                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4418                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4419                                       wpa_s->pending_join_dev_addr, NULL,
4420                                       wpa_s->pending_pd_config_methods, join,
4421                                       0, wpa_s->user_initiated_pd) < 0) {
4422                         wpa_s->p2p_auto_pd = 0;
4423                         wpa_msg_global(wpa_s, MSG_INFO,
4424                                        P2P_EVENT_PROV_DISC_FAILURE
4425                                        " p2p_dev_addr=" MACSTR " status=N/A",
4426                                        MAC2STR(wpa_s->pending_join_dev_addr));
4427                 }
4428                 return;
4429         }
4430
4431         if (wpa_s->p2p_auto_join) {
4432                 int join = wpas_p2p_peer_go(wpa_s,
4433                                             wpa_s->pending_join_dev_addr);
4434                 if (join < 0) {
4435                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4436                                    "running a GO -> use GO Negotiation");
4437                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4438                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4439                                        "reason=peer-not-running-GO");
4440                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4441                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4442                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4443                                          wpa_s->p2p_go_intent,
4444                                          wpa_s->p2p_connect_freq,
4445                                          wpa_s->p2p_persistent_id,
4446                                          wpa_s->p2p_pd_before_go_neg,
4447                                          wpa_s->p2p_go_ht40,
4448                                          wpa_s->p2p_go_vht);
4449                         return;
4450                 }
4451
4452                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4453                            "try to join the group", join ? "" :
4454                            " in older scan");
4455                 if (!join) {
4456                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4457                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4458                         wpa_s->p2p_fallback_to_go_neg = 1;
4459                 }
4460         }
4461
4462         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4463                                  wpa_s->pending_join_iface_addr);
4464         if (freq < 0 &&
4465             p2p_get_interface_addr(wpa_s->global->p2p,
4466                                    wpa_s->pending_join_dev_addr,
4467                                    iface_addr) == 0 &&
4468             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4469             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4470                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4471                            "address for join from " MACSTR " to " MACSTR
4472                            " based on newly discovered P2P peer entry",
4473                            MAC2STR(wpa_s->pending_join_iface_addr),
4474                            MAC2STR(iface_addr));
4475                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4476                           ETH_ALEN);
4477
4478                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4479                                          wpa_s->pending_join_iface_addr);
4480         }
4481         if (freq >= 0) {
4482                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4483                            "from P2P peer table: %d MHz", freq);
4484         }
4485         if (wpa_s->p2p_join_ssid_len) {
4486                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4487                            MACSTR " and SSID %s",
4488                            MAC2STR(wpa_s->pending_join_iface_addr),
4489                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4490                                         wpa_s->p2p_join_ssid_len));
4491                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4492                                   wpa_s->p2p_join_ssid,
4493                                   wpa_s->p2p_join_ssid_len);
4494         }
4495         if (!bss) {
4496                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4497                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4498                 bss = wpa_bss_get_bssid_latest(wpa_s,
4499                                                wpa_s->pending_join_iface_addr);
4500         }
4501         if (bss) {
4502                 u8 dev_addr[ETH_ALEN];
4503
4504                 freq = bss->freq;
4505                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4506                            "from BSS table: %d MHz (SSID %s)", freq,
4507                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4508                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4509                                        dev_addr) == 0 &&
4510                     os_memcmp(wpa_s->pending_join_dev_addr,
4511                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4512                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4513                               ETH_ALEN) != 0) {
4514                         wpa_printf(MSG_DEBUG,
4515                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4516                                    MAC2STR(dev_addr),
4517                                    MAC2STR(wpa_s->pending_join_dev_addr));
4518                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4519                                   ETH_ALEN);
4520                 }
4521         }
4522         if (freq > 0) {
4523                 u16 method;
4524
4525                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4526                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4527                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4528                                        "reason=FREQ_CONFLICT");
4529                         return;
4530                 }
4531
4532                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4533                            "prior to joining an existing group (GO " MACSTR
4534                            " freq=%u MHz)",
4535                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4536                 wpa_s->pending_pd_before_join = 1;
4537
4538                 switch (wpa_s->pending_join_wps_method) {
4539                 case WPS_PIN_DISPLAY:
4540                         method = WPS_CONFIG_KEYPAD;
4541                         break;
4542                 case WPS_PIN_KEYPAD:
4543                         method = WPS_CONFIG_DISPLAY;
4544                         break;
4545                 case WPS_PBC:
4546                         method = WPS_CONFIG_PUSHBUTTON;
4547                         break;
4548                 default:
4549                         method = 0;
4550                         break;
4551                 }
4552
4553                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4554                                                wpa_s->pending_join_dev_addr) ==
4555                      method)) {
4556                         /*
4557                          * We have already performed provision discovery for
4558                          * joining the group. Proceed directly to join
4559                          * operation without duplicated provision discovery. */
4560                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4561                                    "with " MACSTR " already done - proceed to "
4562                                    "join",
4563                                    MAC2STR(wpa_s->pending_join_dev_addr));
4564                         wpa_s->pending_pd_before_join = 0;
4565                         goto start;
4566                 }
4567
4568                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4569                                       wpa_s->pending_join_dev_addr,
4570                                       NULL, method, 1,
4571                                       freq, wpa_s->user_initiated_pd) < 0) {
4572                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4573                                    "Discovery Request before joining an "
4574                                    "existing group");
4575                         wpa_s->pending_pd_before_join = 0;
4576                         goto start;
4577                 }
4578                 return;
4579         }
4580
4581         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4582         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4583         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4584         wpas_p2p_check_join_scan_limit(wpa_s);
4585         return;
4586
4587 start:
4588         /* Start join operation immediately */
4589         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4590 }
4591
4592
4593 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4594                                    const u8 *ssid, size_t ssid_len)
4595 {
4596         int ret;
4597         struct wpa_driver_scan_params params;
4598         struct wpabuf *wps_ie, *ies;
4599         size_t ielen;
4600         int freqs[2] = { 0, 0 };
4601
4602         os_memset(&params, 0, sizeof(params));
4603
4604         /* P2P Wildcard SSID */
4605         params.num_ssids = 1;
4606         if (ssid && ssid_len) {
4607                 params.ssids[0].ssid = ssid;
4608                 params.ssids[0].ssid_len = ssid_len;
4609                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4610                 wpa_s->p2p_join_ssid_len = ssid_len;
4611         } else {
4612                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4613                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4614                 wpa_s->p2p_join_ssid_len = 0;
4615         }
4616
4617         wpa_s->wps->dev.p2p = 1;
4618         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4619                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4620                                         NULL);
4621         if (wps_ie == NULL) {
4622                 wpas_p2p_scan_res_join(wpa_s, NULL);
4623                 return;
4624         }
4625
4626         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4627         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4628         if (ies == NULL) {
4629                 wpabuf_free(wps_ie);
4630                 wpas_p2p_scan_res_join(wpa_s, NULL);
4631                 return;
4632         }
4633         wpabuf_put_buf(ies, wps_ie);
4634         wpabuf_free(wps_ie);
4635
4636         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4637
4638         params.p2p_probe = 1;
4639         params.extra_ies = wpabuf_head(ies);
4640         params.extra_ies_len = wpabuf_len(ies);
4641
4642         if (!freq) {
4643                 int oper_freq;
4644                 /*
4645                  * If freq is not provided, check the operating freq of the GO
4646                  * and use a single channel scan on if possible.
4647                  */
4648                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4649                                               wpa_s->pending_join_iface_addr);
4650                 if (oper_freq > 0)
4651                         freq = oper_freq;
4652         }
4653         if (freq > 0) {
4654                 freqs[0] = freq;
4655                 params.freqs = freqs;
4656         }
4657
4658         /*
4659          * Run a scan to update BSS table and start Provision Discovery once
4660          * the new scan results become available.
4661          */
4662         ret = wpa_drv_scan(wpa_s, &params);
4663         if (!ret) {
4664                 os_get_reltime(&wpa_s->scan_trigger_time);
4665                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4666                 wpa_s->own_scan_requested = 1;
4667         }
4668
4669         wpabuf_free(ies);
4670
4671         if (ret) {
4672                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4673                            "try again later");
4674                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4675                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4676                 wpas_p2p_check_join_scan_limit(wpa_s);
4677         }
4678 }
4679
4680
4681 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4682 {
4683         struct wpa_supplicant *wpa_s = eloop_ctx;
4684         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4685 }
4686
4687
4688 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4689                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4690                          int auto_join, int op_freq,
4691                          const u8 *ssid, size_t ssid_len)
4692 {
4693         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4694                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4695                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4696                    auto_join ? " (auto_join)" : "");
4697         if (ssid && ssid_len) {
4698                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4699                            wpa_ssid_txt(ssid, ssid_len));
4700         }
4701
4702         wpa_s->p2p_auto_pd = 0;
4703         wpa_s->p2p_auto_join = !!auto_join;
4704         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4705         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4706         wpa_s->pending_join_wps_method = wps_method;
4707
4708         /* Make sure we are not running find during connection establishment */
4709         wpas_p2p_stop_find(wpa_s);
4710
4711         wpa_s->p2p_join_scan_count = 0;
4712         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4713         return 0;
4714 }
4715
4716
4717 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4718                                const u8 *ssid, size_t ssid_len)
4719 {
4720         struct wpa_supplicant *group;
4721         struct p2p_go_neg_results res;
4722         struct wpa_bss *bss;
4723
4724         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4725         if (group == NULL)
4726                 return -1;
4727         if (group != wpa_s) {
4728                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4729                           sizeof(group->p2p_pin));
4730                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4731         } else {
4732                 /*
4733                  * Need to mark the current interface for p2p_group_formation
4734                  * when a separate group interface is not used. This is needed
4735                  * to allow p2p_cancel stop a pending p2p_connect-join.
4736                  * wpas_p2p_init_group_interface() addresses this for the case
4737                  * where a separate group interface is used.
4738                  */
4739                 wpa_s->global->p2p_group_formation = wpa_s;
4740         }
4741
4742         group->p2p_in_provisioning = 1;
4743         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4744
4745         os_memset(&res, 0, sizeof(res));
4746         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4747         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4748                   ETH_ALEN);
4749         res.wps_method = wpa_s->pending_join_wps_method;
4750         if (freq && ssid && ssid_len) {
4751                 res.freq = freq;
4752                 res.ssid_len = ssid_len;
4753                 os_memcpy(res.ssid, ssid, ssid_len);
4754         } else {
4755                 bss = wpa_bss_get_bssid_latest(wpa_s,
4756                                                wpa_s->pending_join_iface_addr);
4757                 if (bss) {
4758                         res.freq = bss->freq;
4759                         res.ssid_len = bss->ssid_len;
4760                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4761                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4762                                    bss->freq,
4763                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4764                 }
4765         }
4766
4767         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4768                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4769                            "starting client");
4770                 wpa_drv_cancel_remain_on_channel(wpa_s);
4771                 wpa_s->off_channel_freq = 0;
4772                 wpa_s->roc_waiting_drv_freq = 0;
4773         }
4774         wpas_start_wps_enrollee(group, &res);
4775
4776         /*
4777          * Allow a longer timeout for join-a-running-group than normal 15
4778          * second group formation timeout since the GO may not have authorized
4779          * our connection yet.
4780          */
4781         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4782         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4783                                wpa_s, NULL);
4784
4785         return 0;
4786 }
4787
4788
4789 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4790                                 int *force_freq, int *pref_freq, int go)
4791 {
4792         struct wpa_used_freq_data *freqs;
4793         int res, best_freq, num_unused;
4794         unsigned int freq_in_use = 0, num, i;
4795
4796         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4797                           sizeof(struct wpa_used_freq_data));
4798         if (!freqs)
4799                 return -1;
4800
4801         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4802                                         wpa_s->num_multichan_concurrent);
4803
4804         /*
4805          * It is possible that the total number of used frequencies is bigger
4806          * than the number of frequencies used for P2P, so get the system wide
4807          * number of unused frequencies.
4808          */
4809         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4810
4811         wpa_printf(MSG_DEBUG,
4812                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4813                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4814
4815         if (freq > 0) {
4816                 int ret;
4817                 if (go)
4818                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4819                 else
4820                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4821                 if (!ret) {
4822                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4823                             ieee80211_is_dfs(freq)) {
4824                                 /*
4825                                  * If freq is a DFS channel and DFS is offloaded
4826                                  * to the driver, allow P2P GO to use it.
4827                                  */
4828                                 wpa_printf(MSG_DEBUG,
4829                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4830                                            freq);
4831                         } else {
4832                                 wpa_printf(MSG_DEBUG,
4833                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4834                                            freq);
4835                                 res = -3;
4836                                 goto exit_free;
4837                         }
4838                 }
4839
4840                 for (i = 0; i < num; i++) {
4841                         if (freqs[i].freq == freq)
4842                                 freq_in_use = 1;
4843                 }
4844
4845                 if (num_unused <= 0 && !freq_in_use) {
4846                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4847                                    freq);
4848                         res = -2;
4849                         goto exit_free;
4850                 }
4851                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4852                            "requested channel (%u MHz)", freq);
4853                 *force_freq = freq;
4854                 goto exit_ok;
4855         }
4856
4857         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4858
4859         /* We have a candidate frequency to use */
4860         if (best_freq > 0) {
4861                 if (*pref_freq == 0 && num_unused > 0) {
4862                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4863                                    best_freq);
4864                         *pref_freq = best_freq;
4865                 } else {
4866                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4867                                    best_freq);
4868                         *force_freq = best_freq;
4869                 }
4870         } else if (num_unused > 0) {
4871                 wpa_printf(MSG_DEBUG,
4872                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4873                 *force_freq = 0;
4874         } else {
4875                 wpa_printf(MSG_DEBUG,
4876                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4877                 res = -2;
4878                 goto exit_free;
4879         }
4880
4881 exit_ok:
4882         res = 0;
4883 exit_free:
4884         os_free(freqs);
4885         return res;
4886 }
4887
4888
4889 /**
4890  * wpas_p2p_connect - Request P2P Group Formation to be started
4891  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4892  * @peer_addr: Address of the peer P2P Device
4893  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4894  * @persistent_group: Whether to create a persistent group
4895  * @auto_join: Whether to select join vs. GO Negotiation automatically
4896  * @join: Whether to join an existing group (as a client) instead of starting
4897  *      Group Owner negotiation; @peer_addr is BSSID in that case
4898  * @auth: Whether to only authorize the connection instead of doing that and
4899  *      initiating Group Owner negotiation
4900  * @go_intent: GO Intent or -1 to use default
4901  * @freq: Frequency for the group or 0 for auto-selection
4902  * @persistent_id: Persistent group credentials to use for forcing GO
4903  *      parameters or -1 to generate new values (SSID/passphrase)
4904  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4905  *      interoperability workaround when initiating group formation
4906  * @ht40: Start GO with 40 MHz channel width
4907  * @vht:  Start GO with VHT support
4908  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4909  *      failure, -2 on failure due to channel not currently available,
4910  *      -3 if forced channel is not supported
4911  */
4912 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4913                      const char *pin, enum p2p_wps_method wps_method,
4914                      int persistent_group, int auto_join, int join, int auth,
4915                      int go_intent, int freq, int persistent_id, int pd,
4916                      int ht40, int vht)
4917 {
4918         int force_freq = 0, pref_freq = 0;
4919         int ret = 0, res;
4920         enum wpa_driver_if_type iftype;
4921         const u8 *if_addr;
4922         struct wpa_ssid *ssid = NULL;
4923
4924         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4925                 return -1;
4926
4927         if (persistent_id >= 0) {
4928                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4929                 if (ssid == NULL || ssid->disabled != 2 ||
4930                     ssid->mode != WPAS_MODE_P2P_GO)
4931                         return -1;
4932         }
4933
4934         os_free(wpa_s->global->add_psk);
4935         wpa_s->global->add_psk = NULL;
4936
4937         wpa_s->global->p2p_fail_on_wps_complete = 0;
4938         wpa_s->global->pending_p2ps_group = 0;
4939
4940         if (go_intent < 0)
4941                 go_intent = wpa_s->conf->p2p_go_intent;
4942
4943         if (!auth)
4944                 wpa_s->p2p_long_listen = 0;
4945
4946         wpa_s->p2p_wps_method = wps_method;
4947         wpa_s->p2p_persistent_group = !!persistent_group;
4948         wpa_s->p2p_persistent_id = persistent_id;
4949         wpa_s->p2p_go_intent = go_intent;
4950         wpa_s->p2p_connect_freq = freq;
4951         wpa_s->p2p_fallback_to_go_neg = 0;
4952         wpa_s->p2p_pd_before_go_neg = !!pd;
4953         wpa_s->p2p_go_ht40 = !!ht40;
4954         wpa_s->p2p_go_vht = !!vht;
4955
4956         if (pin)
4957                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4958         else if (wps_method == WPS_PIN_DISPLAY) {
4959                 ret = wps_generate_pin();
4960                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
4961                                   "%08d", ret);
4962                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
4963                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
4964                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4965                            wpa_s->p2p_pin);
4966         } else
4967                 wpa_s->p2p_pin[0] = '\0';
4968
4969         if (join || auto_join) {
4970                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4971                 if (auth) {
4972                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4973                                    "connect a running group from " MACSTR,
4974                                    MAC2STR(peer_addr));
4975                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4976                         return ret;
4977                 }
4978                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4979                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4980                                            iface_addr) < 0) {
4981                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4982                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4983                                          dev_addr);
4984                 }
4985                 if (auto_join) {
4986                         os_get_reltime(&wpa_s->p2p_auto_started);
4987                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4988                                    "%ld.%06ld",
4989                                    wpa_s->p2p_auto_started.sec,
4990                                    wpa_s->p2p_auto_started.usec);
4991                 }
4992                 wpa_s->user_initiated_pd = 1;
4993                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4994                                   auto_join, freq, NULL, 0) < 0)
4995                         return -1;
4996                 return ret;
4997         }
4998
4999         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5000                                    go_intent == 15);
5001         if (res)
5002                 return res;
5003         wpas_p2p_set_own_freq_preference(wpa_s,
5004                                          force_freq ? force_freq : pref_freq);
5005
5006         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5007
5008         if (wpa_s->create_p2p_iface) {
5009                 /* Prepare to add a new interface for the group */
5010                 iftype = WPA_IF_P2P_GROUP;
5011                 if (go_intent == 15)
5012                         iftype = WPA_IF_P2P_GO;
5013                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5014                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5015                                    "interface for the group");
5016                         return -1;
5017                 }
5018
5019                 if_addr = wpa_s->pending_interface_addr;
5020         } else
5021                 if_addr = wpa_s->own_addr;
5022
5023         if (auth) {
5024                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5025                                          go_intent, if_addr,
5026                                          force_freq, persistent_group, ssid,
5027                                          pref_freq) < 0)
5028                         return -1;
5029                 return ret;
5030         }
5031
5032         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5033                                   go_intent, if_addr, force_freq,
5034                                   persistent_group, ssid, pref_freq) < 0) {
5035                 if (wpa_s->create_p2p_iface)
5036                         wpas_p2p_remove_pending_group_interface(wpa_s);
5037                 return -1;
5038         }
5039         return ret;
5040 }
5041
5042
5043 /**
5044  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5045  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5046  * @freq: Frequency of the channel in MHz
5047  * @duration: Duration of the stay on the channel in milliseconds
5048  *
5049  * This callback is called when the driver indicates that it has started the
5050  * requested remain-on-channel duration.
5051  */
5052 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5053                                    unsigned int freq, unsigned int duration)
5054 {
5055         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5056                 return;
5057         wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
5058                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5059                    wpa_s->roc_waiting_drv_freq, freq, duration);
5060         if (wpa_s->off_channel_freq &&
5061             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5062                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5063                               wpa_s->pending_listen_duration);
5064                 wpa_s->pending_listen_freq = 0;
5065         } else {
5066                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5067                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5068                            freq, duration);
5069         }
5070 }
5071
5072
5073 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5074 {
5075         /* Limit maximum Listen state time based on driver limitation. */
5076         if (timeout > wpa_s->max_remain_on_chan)
5077                 timeout = wpa_s->max_remain_on_chan;
5078
5079         return p2p_listen(wpa_s->global->p2p, timeout);
5080 }
5081
5082
5083 /**
5084  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5085  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5086  * @freq: Frequency of the channel in MHz
5087  *
5088  * This callback is called when the driver indicates that a remain-on-channel
5089  * operation has been completed, i.e., the duration on the requested channel
5090  * has timed out.
5091  */
5092 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5093                                           unsigned int freq)
5094 {
5095         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5096                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5097                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5098         wpas_p2p_listen_work_done(wpa_s);
5099         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5100                 return;
5101         if (wpa_s->p2p_long_listen > 0)
5102                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5103         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5104                 return; /* P2P module started a new operation */
5105         if (offchannel_pending_action_tx(wpa_s))
5106                 return;
5107         if (wpa_s->p2p_long_listen > 0) {
5108                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5109                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5110         } else {
5111                 /*
5112                  * When listen duration is over, stop listen & update p2p_state
5113                  * to IDLE.
5114                  */
5115                 p2p_stop_listen(wpa_s->global->p2p);
5116         }
5117 }
5118
5119
5120 /**
5121  * wpas_p2p_group_remove - Remove a P2P group
5122  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5123  * @ifname: Network interface name of the group interface or "*" to remove all
5124  *      groups
5125  * Returns: 0 on success, -1 on failure
5126  *
5127  * This function is used to remove a P2P group. This can be used to disconnect
5128  * from a group in which the local end is a P2P Client or to end a P2P Group in
5129  * case the local end is the Group Owner. If a virtual network interface was
5130  * created for this group, that interface will be removed. Otherwise, only the
5131  * configured P2P group network will be removed from the interface.
5132  */
5133 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5134 {
5135         struct wpa_global *global = wpa_s->global;
5136         struct wpa_supplicant *calling_wpa_s = wpa_s;
5137
5138         if (os_strcmp(ifname, "*") == 0) {
5139                 struct wpa_supplicant *prev;
5140                 wpa_s = global->ifaces;
5141                 while (wpa_s) {
5142                         prev = wpa_s;
5143                         wpa_s = wpa_s->next;
5144                         if (prev->p2p_group_interface !=
5145                             NOT_P2P_GROUP_INTERFACE ||
5146                             (prev->current_ssid &&
5147                              prev->current_ssid->p2p_group))
5148                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5149                 }
5150                 return 0;
5151         }
5152
5153         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5154                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5155                         break;
5156         }
5157
5158         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5159 }
5160
5161
5162 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5163 {
5164         unsigned int r;
5165
5166         if (freq == 2) {
5167                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5168                            "band");
5169                 if (wpa_s->best_24_freq > 0 &&
5170                     p2p_supported_freq_go(wpa_s->global->p2p,
5171                                           wpa_s->best_24_freq)) {
5172                         freq = wpa_s->best_24_freq;
5173                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5174                                    "channel: %d MHz", freq);
5175                 } else {
5176                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5177                                 return -1;
5178                         freq = 2412 + (r % 3) * 25;
5179                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5180                                    "channel: %d MHz", freq);
5181                 }
5182         }
5183
5184         if (freq == 5) {
5185                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5186                            "band");
5187                 if (wpa_s->best_5_freq > 0 &&
5188                     p2p_supported_freq_go(wpa_s->global->p2p,
5189                                        wpa_s->best_5_freq)) {
5190                         freq = wpa_s->best_5_freq;
5191                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5192                                    "channel: %d MHz", freq);
5193                 } else {
5194                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5195                                 return -1;
5196                         freq = 5180 + (r % 4) * 20;
5197                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5198                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5199                                            "5 GHz channel for P2P group");
5200                                 return -1;
5201                         }
5202                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5203                                    "channel: %d MHz", freq);
5204                 }
5205         }
5206
5207         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5208                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5209                     ieee80211_is_dfs(freq)) {
5210                         /*
5211                          * If freq is a DFS channel and DFS is offloaded to the
5212                          * driver, allow P2P GO to use it.
5213                          */
5214                         wpa_printf(MSG_DEBUG, "P2P: "
5215                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5216                                    __func__, freq);
5217                         return freq;
5218                 }
5219                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5220                            "(%u MHz) is not supported for P2P uses",
5221                            freq);
5222                 return -1;
5223         }
5224
5225         return freq;
5226 }
5227
5228
5229 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5230                                         struct p2p_go_neg_results *params,
5231                                         const struct p2p_channels *channels)
5232 {
5233         unsigned int i, r;
5234
5235         /* first try some random selection of the social channels */
5236         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5237                 return -1;
5238
5239         for (i = 0; i < 3; i++) {
5240                 params->freq = 2412 + ((r + i) % 3) * 25;
5241                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5242                     freq_included(channels, params->freq) &&
5243                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5244                         goto out;
5245         }
5246
5247         /* try all channels in reg. class 81 */
5248         for (i = 0; i < 11; i++) {
5249                 params->freq = 2412 + i * 5;
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 operating class 115 */
5257         for (i = 0; i < 4; i++) {
5258                 params->freq = 5180 + i * 20;
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 all channels in operating class 124 */
5266         for (i = 0; i < 4; i++) {
5267                 params->freq = 5745 + i * 20;
5268                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5269                     freq_included(channels, params->freq) &&
5270                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5271                         goto out;
5272         }
5273
5274         /* try social channel class 180 channel 2 */
5275         params->freq = 58320 + 1 * 2160;
5276         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5277             freq_included(channels, params->freq) &&
5278             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5279                 goto out;
5280
5281         /* try all channels in reg. class 180 */
5282         for (i = 0; i < 4; i++) {
5283                 params->freq = 58320 + i * 2160;
5284                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5285                     freq_included(channels, params->freq) &&
5286                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5287                         goto out;
5288         }
5289
5290         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5291         return -1;
5292 out:
5293         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5294                    params->freq);
5295         return 0;
5296 }
5297
5298
5299 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5300                                    struct p2p_go_neg_results *params,
5301                                    int freq, int ht40, int vht,
5302                                    const struct p2p_channels *channels)
5303 {
5304         struct wpa_used_freq_data *freqs;
5305         unsigned int pref_freq, cand_freq;
5306         unsigned int num, i;
5307
5308         os_memset(params, 0, sizeof(*params));
5309         params->role_go = 1;
5310         params->ht40 = ht40;
5311         params->vht = vht;
5312         if (freq) {
5313                 if (!freq_included(channels, freq)) {
5314                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5315                                    "accepted", freq);
5316                         return -1;
5317                 }
5318                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5319                            "frequency %d MHz", freq);
5320                 params->freq = freq;
5321         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5322                    wpa_s->conf->p2p_oper_channel >= 1 &&
5323                    wpa_s->conf->p2p_oper_channel <= 11 &&
5324                    freq_included(channels,
5325                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5326                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5327                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5328                            "frequency %d MHz", params->freq);
5329         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5330                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5331                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5332                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5333                     wpa_s->conf->p2p_oper_reg_class == 125 ||
5334                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5335                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5336                    freq_included(channels,
5337                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5338                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5339                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5340                            "frequency %d MHz", params->freq);
5341         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5342                    wpa_s->best_overall_freq > 0 &&
5343                    p2p_supported_freq_go(wpa_s->global->p2p,
5344                                          wpa_s->best_overall_freq) &&
5345                    freq_included(channels, wpa_s->best_overall_freq)) {
5346                 params->freq = wpa_s->best_overall_freq;
5347                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5348                            "channel %d MHz", params->freq);
5349         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5350                    wpa_s->best_24_freq > 0 &&
5351                    p2p_supported_freq_go(wpa_s->global->p2p,
5352                                          wpa_s->best_24_freq) &&
5353                    freq_included(channels, wpa_s->best_24_freq)) {
5354                 params->freq = wpa_s->best_24_freq;
5355                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5356                            "channel %d MHz", params->freq);
5357         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5358                    wpa_s->best_5_freq > 0 &&
5359                    p2p_supported_freq_go(wpa_s->global->p2p,
5360                                          wpa_s->best_5_freq) &&
5361                    freq_included(channels, wpa_s->best_5_freq)) {
5362                 params->freq = wpa_s->best_5_freq;
5363                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5364                            "channel %d MHz", params->freq);
5365         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5366                                                   channels))) {
5367                 params->freq = pref_freq;
5368                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5369                            "channels", params->freq);
5370         } else {
5371                 /* no preference, select some channel */
5372                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5373                         return -1;
5374         }
5375
5376         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5377                           sizeof(struct wpa_used_freq_data));
5378         if (!freqs)
5379                 return -1;
5380
5381         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5382                                         wpa_s->num_multichan_concurrent);
5383
5384         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5385
5386         /* First try the best used frequency if possible */
5387         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5388                 params->freq = cand_freq;
5389         } else if (!freq) {
5390                 /* Try any of the used frequencies */
5391                 for (i = 0; i < num; i++) {
5392                         if (freq_included(channels, freqs[i].freq)) {
5393                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5394                                            freqs[i].freq);
5395                                 params->freq = freqs[i].freq;
5396                                 break;
5397                         }
5398                 }
5399
5400                 if (i == num) {
5401                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5402                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5403                                 os_free(freqs);
5404                                 return -1;
5405                         } else {
5406                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5407                         }
5408                 }
5409         } else {
5410                 for (i = 0; i < num; i++) {
5411                         if (freqs[i].freq == freq)
5412                                 break;
5413                 }
5414
5415                 if (i == num) {
5416                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5417                                 if (freq)
5418                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5419                                 os_free(freqs);
5420                                 return -1;
5421                         } else {
5422                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5423                         }
5424                 }
5425         }
5426
5427         os_free(freqs);
5428         return 0;
5429 }
5430
5431
5432 static struct wpa_supplicant *
5433 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5434                          int go)
5435 {
5436         struct wpa_supplicant *group_wpa_s;
5437
5438         if (!wpas_p2p_create_iface(wpa_s)) {
5439                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5440                         "operations");
5441                 wpa_s->p2p_first_connection_timeout = 0;
5442                 return wpa_s;
5443         }
5444
5445         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5446                                          WPA_IF_P2P_CLIENT) < 0) {
5447                 wpa_msg_global(wpa_s, MSG_ERROR,
5448                                "P2P: Failed to add group interface");
5449                 return NULL;
5450         }
5451         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5452         if (group_wpa_s == NULL) {
5453                 wpa_msg_global(wpa_s, MSG_ERROR,
5454                                "P2P: Failed to initialize group interface");
5455                 wpas_p2p_remove_pending_group_interface(wpa_s);
5456                 return NULL;
5457         }
5458
5459         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5460                 group_wpa_s->ifname);
5461         group_wpa_s->p2p_first_connection_timeout = 0;
5462         return group_wpa_s;
5463 }
5464
5465
5466 /**
5467  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5468  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5469  * @persistent_group: Whether to create a persistent group
5470  * @freq: Frequency for the group or 0 to indicate no hardcoding
5471  * @ht40: Start GO with 40 MHz channel width
5472  * @vht:  Start GO with VHT support
5473  * Returns: 0 on success, -1 on failure
5474  *
5475  * This function creates a new P2P group with the local end as the Group Owner,
5476  * i.e., without using Group Owner Negotiation.
5477  */
5478 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5479                        int freq, int ht40, int vht)
5480 {
5481         struct p2p_go_neg_results params;
5482
5483         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5484                 return -1;
5485
5486         os_free(wpa_s->global->add_psk);
5487         wpa_s->global->add_psk = NULL;
5488
5489         /* Make sure we are not running find during connection establishment */
5490         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5491         wpas_p2p_stop_find_oper(wpa_s);
5492
5493         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5494         if (freq < 0)
5495                 return -1;
5496
5497         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5498                 return -1;
5499         if (params.freq &&
5500             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5501                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5502                     ieee80211_is_dfs(params.freq)) {
5503                         /*
5504                          * If freq is a DFS channel and DFS is offloaded to the
5505                          * driver, allow P2P GO to use it.
5506                          */
5507                         wpa_printf(MSG_DEBUG,
5508                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5509                                 __func__, params.freq);
5510                 } else {
5511                         wpa_printf(MSG_DEBUG,
5512                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5513                                    params.freq);
5514                         return -1;
5515                 }
5516         }
5517         p2p_go_params(wpa_s->global->p2p, &params);
5518         params.persistent_group = persistent_group;
5519
5520         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5521         if (wpa_s == NULL)
5522                 return -1;
5523         wpas_start_wps_go(wpa_s, &params, 0);
5524
5525         return 0;
5526 }
5527
5528
5529 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5530                                  struct wpa_ssid *params, int addr_allocated,
5531                                  int freq)
5532 {
5533         struct wpa_ssid *ssid;
5534
5535         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5536         if (wpa_s == NULL)
5537                 return -1;
5538         wpa_s->p2p_last_4way_hs_fail = NULL;
5539
5540         wpa_supplicant_ap_deinit(wpa_s);
5541
5542         ssid = wpa_config_add_network(wpa_s->conf);
5543         if (ssid == NULL)
5544                 return -1;
5545         wpa_config_set_network_defaults(ssid);
5546         ssid->temporary = 1;
5547         ssid->proto = WPA_PROTO_RSN;
5548         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5549         ssid->group_cipher = WPA_CIPHER_CCMP;
5550         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5551         ssid->ssid = os_malloc(params->ssid_len);
5552         if (ssid->ssid == NULL) {
5553                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5554                 return -1;
5555         }
5556         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5557         ssid->ssid_len = params->ssid_len;
5558         ssid->p2p_group = 1;
5559         ssid->export_keys = 1;
5560         if (params->psk_set) {
5561                 os_memcpy(ssid->psk, params->psk, 32);
5562                 ssid->psk_set = 1;
5563         }
5564         if (params->passphrase)
5565                 ssid->passphrase = os_strdup(params->passphrase);
5566
5567         wpa_s->show_group_started = 1;
5568         wpa_s->p2p_in_invitation = 1;
5569         wpa_s->p2p_invite_go_freq = freq;
5570
5571         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5572                              NULL);
5573         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5574                                wpas_p2p_group_formation_timeout,
5575                                wpa_s->parent, NULL);
5576         wpa_supplicant_select_network(wpa_s, ssid);
5577
5578         return 0;
5579 }
5580
5581
5582 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5583                                   struct wpa_ssid *ssid, int addr_allocated,
5584                                   int force_freq, int neg_freq, int ht40,
5585                                   int vht, const struct p2p_channels *channels,
5586                                   int connection_timeout)
5587 {
5588         struct p2p_go_neg_results params;
5589         int go = 0, freq;
5590
5591         if (ssid->disabled != 2 || ssid->ssid == NULL)
5592                 return -1;
5593
5594         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5595             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5596                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5597                            "already running");
5598                 if (go == 0 &&
5599                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5600                                          wpa_s->parent, NULL)) {
5601                         /*
5602                          * This can happen if Invitation Response frame was lost
5603                          * and the peer (GO of a persistent group) tries to
5604                          * invite us again. Reschedule the timeout to avoid
5605                          * terminating the wait for the connection too early
5606                          * since we now know that the peer is still trying to
5607                          * invite us instead of having already started the GO.
5608                          */
5609                         wpa_printf(MSG_DEBUG,
5610                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5611                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5612                                                wpas_p2p_group_formation_timeout,
5613                                                wpa_s->parent, NULL);
5614                 }
5615                 return 0;
5616         }
5617
5618         os_free(wpa_s->global->add_psk);
5619         wpa_s->global->add_psk = NULL;
5620
5621         /* Make sure we are not running find during connection establishment */
5622         wpas_p2p_stop_find_oper(wpa_s);
5623
5624         wpa_s->p2p_fallback_to_go_neg = 0;
5625
5626         if (ssid->mode == WPAS_MODE_P2P_GO) {
5627                 if (force_freq > 0) {
5628                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5629                         if (freq < 0)
5630                                 return -1;
5631                 } else {
5632                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5633                         if (freq < 0 ||
5634                             (freq > 0 && !freq_included(channels, freq)))
5635                                 freq = 0;
5636                 }
5637         } else if (ssid->mode == WPAS_MODE_INFRA) {
5638                 freq = neg_freq;
5639                 if (freq <= 0 || !freq_included(channels, freq)) {
5640                         struct os_reltime now;
5641                         struct wpa_bss *bss =
5642                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5643
5644                         os_get_reltime(&now);
5645                         if (bss &&
5646                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5647                             freq_included(channels, bss->freq))
5648                                 freq = bss->freq;
5649                         else
5650                                 freq = 0;
5651                 }
5652
5653                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5654         } else {
5655                 return -1;
5656         }
5657
5658         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5659                 return -1;
5660
5661         params.role_go = 1;
5662         params.psk_set = ssid->psk_set;
5663         if (params.psk_set)
5664                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5665         if (ssid->passphrase) {
5666                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5667                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5668                                    "persistent group");
5669                         return -1;
5670                 }
5671                 os_strlcpy(params.passphrase, ssid->passphrase,
5672                            sizeof(params.passphrase));
5673         }
5674         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5675         params.ssid_len = ssid->ssid_len;
5676         params.persistent_group = 1;
5677
5678         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5679         if (wpa_s == NULL)
5680                 return -1;
5681
5682         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5683
5684         wpa_s->p2p_first_connection_timeout = connection_timeout;
5685         wpas_start_wps_go(wpa_s, &params, 0);
5686
5687         return 0;
5688 }
5689
5690
5691 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5692                                struct wpabuf *proberesp_ies)
5693 {
5694         struct wpa_supplicant *wpa_s = ctx;
5695         if (wpa_s->ap_iface) {
5696                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5697                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5698                         wpabuf_free(beacon_ies);
5699                         wpabuf_free(proberesp_ies);
5700                         return;
5701                 }
5702                 if (beacon_ies) {
5703                         wpabuf_free(hapd->p2p_beacon_ie);
5704                         hapd->p2p_beacon_ie = beacon_ies;
5705                 }
5706                 wpabuf_free(hapd->p2p_probe_resp_ie);
5707                 hapd->p2p_probe_resp_ie = proberesp_ies;
5708         } else {
5709                 wpabuf_free(beacon_ies);
5710                 wpabuf_free(proberesp_ies);
5711         }
5712         wpa_supplicant_ap_update_beacon(wpa_s);
5713 }
5714
5715
5716 static void wpas_p2p_idle_update(void *ctx, int idle)
5717 {
5718         struct wpa_supplicant *wpa_s = ctx;
5719         if (!wpa_s->ap_iface)
5720                 return;
5721         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5722         if (idle) {
5723                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5724                     wpa_s->p2p_in_provisioning) {
5725                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5726                         return;
5727                 }
5728                 wpas_p2p_set_group_idle_timeout(wpa_s);
5729         } else
5730                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5731 }
5732
5733
5734 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5735                                        struct wpa_ssid *ssid)
5736 {
5737         struct p2p_group *group;
5738         struct p2p_group_config *cfg;
5739
5740         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5741                 return NULL;
5742
5743         cfg = os_zalloc(sizeof(*cfg));
5744         if (cfg == NULL)
5745                 return NULL;
5746
5747         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5748                 cfg->persistent_group = 2;
5749         else if (ssid->p2p_persistent_group)
5750                 cfg->persistent_group = 1;
5751         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5752         if (wpa_s->max_stations &&
5753             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5754                 cfg->max_clients = wpa_s->max_stations;
5755         else
5756                 cfg->max_clients = wpa_s->conf->max_num_sta;
5757         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5758         cfg->ssid_len = ssid->ssid_len;
5759         cfg->freq = ssid->frequency;
5760         cfg->cb_ctx = wpa_s;
5761         cfg->ie_update = wpas_p2p_ie_update;
5762         cfg->idle_update = wpas_p2p_idle_update;
5763
5764         group = p2p_group_init(wpa_s->global->p2p, cfg);
5765         if (group == NULL)
5766                 os_free(cfg);
5767         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5768                 p2p_group_notif_formation_done(group);
5769         wpa_s->p2p_group = group;
5770         return group;
5771 }
5772
5773
5774 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5775                           int registrar)
5776 {
5777         struct wpa_ssid *ssid = wpa_s->current_ssid;
5778
5779         if (!wpa_s->p2p_in_provisioning) {
5780                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5781                            "provisioning not in progress");
5782                 return;
5783         }
5784
5785         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5786                 u8 go_dev_addr[ETH_ALEN];
5787                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5788                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5789                                           ssid->ssid_len);
5790                 /* Clear any stored provisioning info */
5791                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5792         }
5793
5794         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5795                              NULL);
5796         wpa_s->p2p_go_group_formation_completed = 1;
5797         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5798                 /*
5799                  * Use a separate timeout for initial data connection to
5800                  * complete to allow the group to be removed automatically if
5801                  * something goes wrong in this step before the P2P group idle
5802                  * timeout mechanism is taken into use.
5803                  */
5804                 wpa_dbg(wpa_s, MSG_DEBUG,
5805                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5806                         P2P_MAX_INITIAL_CONN_WAIT);
5807                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5808                                        wpas_p2p_group_formation_timeout,
5809                                        wpa_s->parent, NULL);
5810         } else if (ssid) {
5811                 /*
5812                  * Use a separate timeout for initial data connection to
5813                  * complete to allow the group to be removed automatically if
5814                  * the client does not complete data connection successfully.
5815                  */
5816                 wpa_dbg(wpa_s, MSG_DEBUG,
5817                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5818                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5819                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5820                                        wpas_p2p_group_formation_timeout,
5821                                        wpa_s->parent, NULL);
5822                 /*
5823                  * Complete group formation on first successful data connection
5824                  */
5825                 wpa_s->p2p_go_group_formation_completed = 0;
5826         }
5827         if (wpa_s->global->p2p)
5828                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5829         wpas_group_formation_completed(wpa_s, 1, 0);
5830 }
5831
5832
5833 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5834                          struct wps_event_fail *fail)
5835 {
5836         if (!wpa_s->p2p_in_provisioning) {
5837                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5838                            "provisioning not in progress");
5839                 return;
5840         }
5841
5842         if (wpa_s->go_params) {
5843                 p2p_clear_provisioning_info(
5844                         wpa_s->global->p2p,
5845                         wpa_s->go_params->peer_device_addr);
5846         }
5847
5848         wpas_notify_p2p_wps_failed(wpa_s, fail);
5849
5850         if (wpa_s == wpa_s->global->p2p_group_formation) {
5851                 /*
5852                  * Allow some time for the failed WPS negotiation exchange to
5853                  * complete, but remove the group since group formation cannot
5854                  * succeed after provisioning failure.
5855                  */
5856                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5857                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5858                 eloop_deplete_timeout(0, 50000,
5859                                       wpas_p2p_group_formation_timeout,
5860                                       wpa_s->parent, NULL);
5861         }
5862 }
5863
5864
5865 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5866 {
5867         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5868             !wpa_s->p2p_in_provisioning)
5869                 return 0;
5870
5871         wpas_p2p_grpform_fail_after_wps(wpa_s);
5872
5873         return 1;
5874 }
5875
5876
5877 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5878                        const char *config_method,
5879                        enum wpas_p2p_prov_disc_use use,
5880                        struct p2ps_provision *p2ps_prov)
5881 {
5882         u16 config_methods;
5883
5884         wpa_s->global->pending_p2ps_group = 0;
5885         wpa_s->p2p_fallback_to_go_neg = 0;
5886         wpa_s->pending_pd_use = NORMAL_PD;
5887         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
5888                 p2ps_prov->conncap = p2ps_group_capability(
5889                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
5890                 wpa_printf(MSG_DEBUG,
5891                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
5892                            __func__, p2ps_prov->conncap,
5893                            p2ps_prov->adv_id, p2ps_prov->conncap,
5894                            p2ps_prov->status, p2ps_prov->info);
5895
5896                 config_methods = 0;
5897         } else if (os_strncmp(config_method, "display", 7) == 0)
5898                 config_methods = WPS_CONFIG_DISPLAY;
5899         else if (os_strncmp(config_method, "keypad", 6) == 0)
5900                 config_methods = WPS_CONFIG_KEYPAD;
5901         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5902                  os_strncmp(config_method, "pushbutton", 10) == 0)
5903                 config_methods = WPS_CONFIG_PUSHBUTTON;
5904         else {
5905                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5906                 os_free(p2ps_prov);
5907                 return -1;
5908         }
5909
5910         if (use == WPAS_P2P_PD_AUTO) {
5911                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5912                 wpa_s->pending_pd_config_methods = config_methods;
5913                 wpa_s->p2p_auto_pd = 1;
5914                 wpa_s->p2p_auto_join = 0;
5915                 wpa_s->pending_pd_before_join = 0;
5916                 wpa_s->auto_pd_scan_retry = 0;
5917                 wpas_p2p_stop_find(wpa_s);
5918                 wpa_s->p2p_join_scan_count = 0;
5919                 os_get_reltime(&wpa_s->p2p_auto_started);
5920                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5921                            wpa_s->p2p_auto_started.sec,
5922                            wpa_s->p2p_auto_started.usec);
5923                 wpas_p2p_join_scan(wpa_s, NULL);
5924                 return 0;
5925         }
5926
5927         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
5928                 os_free(p2ps_prov);
5929                 return -1;
5930         }
5931
5932         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
5933                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5934                                  0, 1);
5935 }
5936
5937
5938 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5939                               char *end)
5940 {
5941         return p2p_scan_result_text(ies, ies_len, buf, end);
5942 }
5943
5944
5945 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5946 {
5947         if (!offchannel_pending_action_tx(wpa_s))
5948                 return;
5949
5950         wpas_p2p_action_tx_clear(wpa_s);
5951
5952         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5953                    "operation request");
5954         offchannel_clear_pending_action_tx(wpa_s);
5955 }
5956
5957
5958 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5959                   enum p2p_discovery_type type,
5960                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5961                   const u8 *dev_id, unsigned int search_delay,
5962                   u8 seek_cnt, const char **seek_string, int freq)
5963 {
5964         wpas_p2p_clear_pending_action_tx(wpa_s);
5965         wpa_s->p2p_long_listen = 0;
5966
5967         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5968             wpa_s->p2p_in_provisioning)
5969                 return -1;
5970
5971         wpa_supplicant_cancel_sched_scan(wpa_s);
5972
5973         return p2p_find(wpa_s->global->p2p, timeout, type,
5974                         num_req_dev_types, req_dev_types, dev_id,
5975                         search_delay, seek_cnt, seek_string, freq);
5976 }
5977
5978
5979 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
5980                                             struct wpa_scan_results *scan_res)
5981 {
5982         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5983
5984         if (wpa_s->p2p_scan_work) {
5985                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
5986                 wpa_s->p2p_scan_work = NULL;
5987                 radio_work_done(work);
5988         }
5989
5990         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5991                 return;
5992
5993         /*
5994          * Indicate that results have been processed so that the P2P module can
5995          * continue pending tasks.
5996          */
5997         p2p_scan_res_handled(wpa_s->global->p2p);
5998 }
5999
6000
6001 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6002 {
6003         wpas_p2p_clear_pending_action_tx(wpa_s);
6004         wpa_s->p2p_long_listen = 0;
6005         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6006         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6007
6008         if (wpa_s->global->p2p)
6009                 p2p_stop_find(wpa_s->global->p2p);
6010
6011         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6012                 wpa_printf(MSG_DEBUG,
6013                            "P2P: Do not consider the scan results after stop_find");
6014                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6015         }
6016 }
6017
6018
6019 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6020 {
6021         wpas_p2p_stop_find_oper(wpa_s);
6022         if (!wpa_s->global->pending_group_iface_for_p2ps)
6023                 wpas_p2p_remove_pending_group_interface(wpa_s);
6024 }
6025
6026
6027 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6028 {
6029         struct wpa_supplicant *wpa_s = eloop_ctx;
6030         wpa_s->p2p_long_listen = 0;
6031 }
6032
6033
6034 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6035 {
6036         int res;
6037
6038         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6039                 return -1;
6040
6041         wpa_supplicant_cancel_sched_scan(wpa_s);
6042         wpas_p2p_clear_pending_action_tx(wpa_s);
6043
6044         if (timeout == 0) {
6045                 /*
6046                  * This is a request for unlimited Listen state. However, at
6047                  * least for now, this is mapped to a Listen state for one
6048                  * hour.
6049                  */
6050                 timeout = 3600;
6051         }
6052         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6053         wpa_s->p2p_long_listen = 0;
6054
6055         /*
6056          * Stop previous find/listen operation to avoid trying to request a new
6057          * remain-on-channel operation while the driver is still running the
6058          * previous one.
6059          */
6060         if (wpa_s->global->p2p)
6061                 p2p_stop_find(wpa_s->global->p2p);
6062
6063         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6064         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6065                 wpa_s->p2p_long_listen = timeout * 1000;
6066                 eloop_register_timeout(timeout, 0,
6067                                        wpas_p2p_long_listen_timeout,
6068                                        wpa_s, NULL);
6069         }
6070
6071         return res;
6072 }
6073
6074
6075 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6076                           u8 *buf, size_t len, int p2p_group)
6077 {
6078         struct wpabuf *p2p_ie;
6079         int ret;
6080
6081         if (wpa_s->global->p2p_disabled)
6082                 return -1;
6083         /*
6084          * Advertize mandatory cross connection capability even on
6085          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6086          */
6087         if (wpa_s->conf->p2p_disabled && p2p_group)
6088                 return -1;
6089         if (wpa_s->global->p2p == NULL)
6090                 return -1;
6091         if (bss == NULL)
6092                 return -1;
6093
6094         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6095         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6096                                p2p_group, p2p_ie);
6097         wpabuf_free(p2p_ie);
6098
6099         return ret;
6100 }
6101
6102
6103 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6104                           const u8 *dst, const u8 *bssid,
6105                           const u8 *ie, size_t ie_len,
6106                           unsigned int rx_freq, int ssi_signal)
6107 {
6108         if (wpa_s->global->p2p_disabled)
6109                 return 0;
6110         if (wpa_s->global->p2p == NULL)
6111                 return 0;
6112
6113         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6114                                  ie, ie_len, rx_freq)) {
6115         case P2P_PREQ_NOT_P2P:
6116                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6117                                  ssi_signal);
6118                 /* fall through */
6119         case P2P_PREQ_MALFORMED:
6120         case P2P_PREQ_NOT_LISTEN:
6121         case P2P_PREQ_NOT_PROCESSED:
6122         default: /* make gcc happy */
6123                 return 0;
6124         case P2P_PREQ_PROCESSED:
6125                 return 1;
6126         }
6127 }
6128
6129
6130 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6131                         const u8 *sa, const u8 *bssid,
6132                         u8 category, const u8 *data, size_t len, int freq)
6133 {
6134         if (wpa_s->global->p2p_disabled)
6135                 return;
6136         if (wpa_s->global->p2p == NULL)
6137                 return;
6138
6139         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6140                       freq);
6141 }
6142
6143
6144 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6145 {
6146         if (wpa_s->global->p2p_disabled)
6147                 return;
6148         if (wpa_s->global->p2p == NULL)
6149                 return;
6150
6151         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6152 }
6153
6154
6155 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6156 {
6157         p2p_group_deinit(wpa_s->p2p_group);
6158         wpa_s->p2p_group = NULL;
6159
6160         wpa_s->ap_configured_cb = NULL;
6161         wpa_s->ap_configured_cb_ctx = NULL;
6162         wpa_s->ap_configured_cb_data = NULL;
6163         wpa_s->connect_without_scan = NULL;
6164 }
6165
6166
6167 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6168 {
6169         wpa_s->p2p_long_listen = 0;
6170
6171         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6172                 return -1;
6173
6174         return p2p_reject(wpa_s->global->p2p, addr);
6175 }
6176
6177
6178 /* Invite to reinvoke a persistent group */
6179 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6180                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6181                     int ht40, int vht, int pref_freq)
6182 {
6183         enum p2p_invite_role role;
6184         u8 *bssid = NULL;
6185         int force_freq = 0;
6186         int res;
6187         int no_pref_freq_given = pref_freq == 0;
6188
6189         wpa_s->global->p2p_invite_group = NULL;
6190         if (peer_addr)
6191                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6192         else
6193                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6194
6195         wpa_s->p2p_persistent_go_freq = freq;
6196         wpa_s->p2p_go_ht40 = !!ht40;
6197         if (ssid->mode == WPAS_MODE_P2P_GO) {
6198                 role = P2P_INVITE_ROLE_GO;
6199                 if (peer_addr == NULL) {
6200                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6201                                    "address in invitation command");
6202                         return -1;
6203                 }
6204                 if (wpas_p2p_create_iface(wpa_s)) {
6205                         if (wpas_p2p_add_group_interface(wpa_s,
6206                                                          WPA_IF_P2P_GO) < 0) {
6207                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6208                                            "allocate a new interface for the "
6209                                            "group");
6210                                 return -1;
6211                         }
6212                         bssid = wpa_s->pending_interface_addr;
6213                 } else
6214                         bssid = wpa_s->own_addr;
6215         } else {
6216                 role = P2P_INVITE_ROLE_CLIENT;
6217                 peer_addr = ssid->bssid;
6218         }
6219         wpa_s->pending_invite_ssid_id = ssid->id;
6220
6221         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6222                                    role == P2P_INVITE_ROLE_GO);
6223         if (res)
6224                 return res;
6225
6226         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6227                 return -1;
6228
6229         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6230             no_pref_freq_given && pref_freq > 0 &&
6231             wpa_s->num_multichan_concurrent > 1 &&
6232             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6233                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6234                            pref_freq);
6235                 pref_freq = 0;
6236         }
6237
6238         /*
6239          * Stop any find/listen operations before invitation and possibly
6240          * connection establishment.
6241          */
6242         wpas_p2p_stop_find_oper(wpa_s);
6243
6244         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6245                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6246                           1, pref_freq, -1);
6247 }
6248
6249
6250 /* Invite to join an active group */
6251 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6252                           const u8 *peer_addr, const u8 *go_dev_addr)
6253 {
6254         struct wpa_global *global = wpa_s->global;
6255         enum p2p_invite_role role;
6256         u8 *bssid = NULL;
6257         struct wpa_ssid *ssid;
6258         int persistent;
6259         int freq = 0, force_freq = 0, pref_freq = 0;
6260         int res;
6261
6262         wpa_s->p2p_persistent_go_freq = 0;
6263         wpa_s->p2p_go_ht40 = 0;
6264         wpa_s->p2p_go_vht = 0;
6265
6266         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6267                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6268                         break;
6269         }
6270         if (wpa_s == NULL) {
6271                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6272                 return -1;
6273         }
6274
6275         ssid = wpa_s->current_ssid;
6276         if (ssid == NULL) {
6277                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6278                            "invitation");
6279                 return -1;
6280         }
6281
6282         wpa_s->global->p2p_invite_group = wpa_s;
6283         persistent = ssid->p2p_persistent_group &&
6284                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6285                                         ssid->ssid, ssid->ssid_len);
6286
6287         if (ssid->mode == WPAS_MODE_P2P_GO) {
6288                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6289                 bssid = wpa_s->own_addr;
6290                 if (go_dev_addr == NULL)
6291                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6292                 freq = ssid->frequency;
6293         } else {
6294                 role = P2P_INVITE_ROLE_CLIENT;
6295                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6296                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6297                                    "invite to current group");
6298                         return -1;
6299                 }
6300                 bssid = wpa_s->bssid;
6301                 if (go_dev_addr == NULL &&
6302                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6303                         go_dev_addr = wpa_s->go_dev_addr;
6304                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6305                         (int) wpa_s->assoc_freq;
6306         }
6307         wpa_s->parent->pending_invite_ssid_id = -1;
6308
6309         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6310                 return -1;
6311
6312         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6313                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6314         if (res)
6315                 return res;
6316         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6317
6318         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6319                           ssid->ssid, ssid->ssid_len, force_freq,
6320                           go_dev_addr, persistent, pref_freq, -1);
6321 }
6322
6323
6324 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6325 {
6326         struct wpa_ssid *ssid = wpa_s->current_ssid;
6327         u8 go_dev_addr[ETH_ALEN];
6328         int network_id = -1;
6329         int persistent;
6330         int freq;
6331         u8 ip[3 * 4];
6332         char ip_addr[100];
6333
6334         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6335                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6336                                      wpa_s->parent, NULL);
6337         }
6338
6339         if (!wpa_s->show_group_started || !ssid)
6340                 return;
6341
6342         wpa_s->show_group_started = 0;
6343
6344         os_memset(go_dev_addr, 0, ETH_ALEN);
6345         if (ssid->bssid_set)
6346                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6347         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6348                                                ssid->ssid_len);
6349         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6350
6351         if (wpa_s->global->p2p_group_formation == wpa_s)
6352                 wpa_s->global->p2p_group_formation = NULL;
6353
6354         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6355                 (int) wpa_s->assoc_freq;
6356
6357         ip_addr[0] = '\0';
6358         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6359                 int res;
6360
6361                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6362                                   " ip_addr=%u.%u.%u.%u "
6363                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6364                                   ip[0], ip[1], ip[2], ip[3],
6365                                   ip[4], ip[5], ip[6], ip[7],
6366                                   ip[8], ip[9], ip[10], ip[11]);
6367                 if (os_snprintf_error(sizeof(ip_addr), res))
6368                         ip_addr[0] = '\0';
6369         }
6370
6371         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6372                                ssid->passphrase == NULL && ssid->psk_set ?
6373                                ssid->psk : NULL,
6374                                ssid->passphrase, go_dev_addr, persistent,
6375                                ip_addr);
6376
6377         if (persistent)
6378                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6379                                                              ssid, go_dev_addr);
6380         if (network_id < 0)
6381                 network_id = ssid->id;
6382         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6383 }
6384
6385
6386 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6387                           u32 interval1, u32 duration2, u32 interval2)
6388 {
6389         int ret;
6390
6391         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6392                 return -1;
6393
6394         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6395             wpa_s->current_ssid == NULL ||
6396             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6397                 return -1;
6398
6399         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6400                                wpa_s->own_addr, wpa_s->assoc_freq,
6401                                duration1, interval1, duration2, interval2);
6402         if (ret == 0)
6403                 wpa_s->waiting_presence_resp = 1;
6404
6405         return ret;
6406 }
6407
6408
6409 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6410                         unsigned int interval)
6411 {
6412         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6413                 return -1;
6414
6415         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6416 }
6417
6418
6419 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6420 {
6421         if (wpa_s->current_ssid == NULL) {
6422                 /*
6423                  * current_ssid can be cleared when P2P client interface gets
6424                  * disconnected, so assume this interface was used as P2P
6425                  * client.
6426                  */
6427                 return 1;
6428         }
6429         return wpa_s->current_ssid->p2p_group &&
6430                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6431 }
6432
6433
6434 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6435 {
6436         struct wpa_supplicant *wpa_s = eloop_ctx;
6437
6438         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6439                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6440                            "disabled");
6441                 return;
6442         }
6443
6444         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6445                    "group");
6446         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6447 }
6448
6449
6450 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6451 {
6452         int timeout;
6453
6454         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6455                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6456
6457         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6458                 return;
6459
6460         timeout = wpa_s->conf->p2p_group_idle;
6461         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6462             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6463             timeout = P2P_MAX_CLIENT_IDLE;
6464
6465         if (timeout == 0)
6466                 return;
6467
6468         if (timeout < 0) {
6469                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6470                         timeout = 0; /* special client mode no-timeout */
6471                 else
6472                         return;
6473         }
6474
6475         if (wpa_s->p2p_in_provisioning) {
6476                 /*
6477                  * Use the normal group formation timeout during the
6478                  * provisioning phase to avoid terminating this process too
6479                  * early due to group idle timeout.
6480                  */
6481                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6482                            "during provisioning");
6483                 return;
6484         }
6485
6486         if (wpa_s->show_group_started) {
6487                 /*
6488                  * Use the normal group formation timeout between the end of
6489                  * the provisioning phase and completion of 4-way handshake to
6490                  * avoid terminating this process too early due to group idle
6491                  * timeout.
6492                  */
6493                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6494                            "while waiting for initial 4-way handshake to "
6495                            "complete");
6496                 return;
6497         }
6498
6499         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6500                    timeout);
6501         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6502                                wpa_s, NULL);
6503 }
6504
6505
6506 /* Returns 1 if the interface was removed */
6507 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6508                           u16 reason_code, const u8 *ie, size_t ie_len,
6509                           int locally_generated)
6510 {
6511         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6512                 return 0;
6513
6514         if (!locally_generated)
6515                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6516                                  ie_len);
6517
6518         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6519             wpa_s->current_ssid &&
6520             wpa_s->current_ssid->p2p_group &&
6521             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6522                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6523                            "session is ending");
6524                 if (wpas_p2p_group_delete(wpa_s,
6525                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6526                     > 0)
6527                         return 1;
6528         }
6529
6530         return 0;
6531 }
6532
6533
6534 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6535                              u16 reason_code, const u8 *ie, size_t ie_len,
6536                              int locally_generated)
6537 {
6538         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6539                 return;
6540
6541         if (!locally_generated)
6542                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6543                                    ie_len);
6544 }
6545
6546
6547 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6548 {
6549         struct p2p_data *p2p = wpa_s->global->p2p;
6550
6551         if (p2p == NULL)
6552                 return;
6553
6554         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6555                 return;
6556
6557         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6558                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6559
6560         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6561                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6562
6563         if (wpa_s->wps &&
6564             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6565                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6566
6567         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6568                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6569
6570         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6571                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6572                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6573                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6574                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6575         }
6576
6577         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6578                 p2p_set_sec_dev_types(p2p,
6579                                       (void *) wpa_s->conf->sec_device_type,
6580                                       wpa_s->conf->num_sec_device_types);
6581
6582         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6583                 int i;
6584                 p2p_remove_wps_vendor_extensions(p2p);
6585                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6586                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6587                                 continue;
6588                         p2p_add_wps_vendor_extension(
6589                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6590                 }
6591         }
6592
6593         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6594             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6595                 char country[3];
6596                 country[0] = wpa_s->conf->country[0];
6597                 country[1] = wpa_s->conf->country[1];
6598                 country[2] = 0x04;
6599                 p2p_set_country(p2p, country);
6600         }
6601
6602         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6603                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6604                                      wpa_s->conf->p2p_ssid_postfix ?
6605                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6606                                      0);
6607         }
6608
6609         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6610                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6611
6612         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6613                 u8 reg_class, channel;
6614                 int ret;
6615                 unsigned int r;
6616                 u8 channel_forced;
6617
6618                 if (wpa_s->conf->p2p_listen_reg_class &&
6619                     wpa_s->conf->p2p_listen_channel) {
6620                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6621                         channel = wpa_s->conf->p2p_listen_channel;
6622                         channel_forced = 1;
6623                 } else {
6624                         reg_class = 81;
6625                         /*
6626                          * Pick one of the social channels randomly as the
6627                          * listen channel.
6628                          */
6629                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6630                                 channel = 1;
6631                         else
6632                                 channel = 1 + (r % 3) * 5;
6633                         channel_forced = 0;
6634                 }
6635                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6636                                              channel_forced);
6637                 if (ret)
6638                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6639                                    "failed: %d", ret);
6640         }
6641         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6642                 u8 op_reg_class, op_channel, cfg_op_channel;
6643                 int ret = 0;
6644                 unsigned int r;
6645                 if (wpa_s->conf->p2p_oper_reg_class &&
6646                     wpa_s->conf->p2p_oper_channel) {
6647                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6648                         op_channel = wpa_s->conf->p2p_oper_channel;
6649                         cfg_op_channel = 1;
6650                 } else {
6651                         op_reg_class = 81;
6652                         /*
6653                          * Use random operation channel from (1, 6, 11)
6654                          *if no other preference is indicated.
6655                          */
6656                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6657                                 op_channel = 1;
6658                         else
6659                                 op_channel = 1 + (r % 3) * 5;
6660                         cfg_op_channel = 0;
6661                 }
6662                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6663                                            cfg_op_channel);
6664                 if (ret)
6665                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6666                                    "failed: %d", ret);
6667         }
6668
6669         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6670                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6671                                       wpa_s->conf->p2p_pref_chan) < 0) {
6672                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6673                                    "update failed");
6674                 }
6675
6676                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6677                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6678                                    "update failed");
6679                 }
6680         }
6681
6682         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6683                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6684 }
6685
6686
6687 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6688                      int duration)
6689 {
6690         if (!wpa_s->ap_iface)
6691                 return -1;
6692         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6693                                    duration);
6694 }
6695
6696
6697 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6698 {
6699         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6700                 return -1;
6701
6702         wpa_s->global->cross_connection = enabled;
6703         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6704
6705         if (!enabled) {
6706                 struct wpa_supplicant *iface;
6707
6708                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6709                 {
6710                         if (iface->cross_connect_enabled == 0)
6711                                 continue;
6712
6713                         iface->cross_connect_enabled = 0;
6714                         iface->cross_connect_in_use = 0;
6715                         wpa_msg_global(iface->parent, MSG_INFO,
6716                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6717                                        iface->ifname,
6718                                        iface->cross_connect_uplink);
6719                 }
6720         }
6721
6722         return 0;
6723 }
6724
6725
6726 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6727 {
6728         struct wpa_supplicant *iface;
6729
6730         if (!uplink->global->cross_connection)
6731                 return;
6732
6733         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6734                 if (!iface->cross_connect_enabled)
6735                         continue;
6736                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6737                     0)
6738                         continue;
6739                 if (iface->ap_iface == NULL)
6740                         continue;
6741                 if (iface->cross_connect_in_use)
6742                         continue;
6743
6744                 iface->cross_connect_in_use = 1;
6745                 wpa_msg_global(iface->parent, MSG_INFO,
6746                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6747                                iface->ifname, iface->cross_connect_uplink);
6748         }
6749 }
6750
6751
6752 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6753 {
6754         struct wpa_supplicant *iface;
6755
6756         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6757                 if (!iface->cross_connect_enabled)
6758                         continue;
6759                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6760                     0)
6761                         continue;
6762                 if (!iface->cross_connect_in_use)
6763                         continue;
6764
6765                 wpa_msg_global(iface->parent, MSG_INFO,
6766                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6767                                iface->ifname, iface->cross_connect_uplink);
6768                 iface->cross_connect_in_use = 0;
6769         }
6770 }
6771
6772
6773 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6774 {
6775         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6776             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6777             wpa_s->cross_connect_disallowed)
6778                 wpas_p2p_disable_cross_connect(wpa_s);
6779         else
6780                 wpas_p2p_enable_cross_connect(wpa_s);
6781         if (!wpa_s->ap_iface &&
6782             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6783                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6784 }
6785
6786
6787 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6788 {
6789         wpas_p2p_disable_cross_connect(wpa_s);
6790         if (!wpa_s->ap_iface &&
6791             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6792                                          wpa_s, NULL))
6793                 wpas_p2p_set_group_idle_timeout(wpa_s);
6794 }
6795
6796
6797 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6798 {
6799         struct wpa_supplicant *iface;
6800
6801         if (!wpa_s->global->cross_connection)
6802                 return;
6803
6804         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6805                 if (iface == wpa_s)
6806                         continue;
6807                 if (iface->drv_flags &
6808                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6809                         continue;
6810                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
6811                     iface != wpa_s->parent)
6812                         continue;
6813
6814                 wpa_s->cross_connect_enabled = 1;
6815                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6816                            sizeof(wpa_s->cross_connect_uplink));
6817                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6818                            "%s to %s whenever uplink is available",
6819                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6820
6821                 if (iface->ap_iface || iface->current_ssid == NULL ||
6822                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6823                     iface->cross_connect_disallowed ||
6824                     iface->wpa_state != WPA_COMPLETED)
6825                         break;
6826
6827                 wpa_s->cross_connect_in_use = 1;
6828                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6829                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6830                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6831                 break;
6832         }
6833 }
6834
6835
6836 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6837 {
6838         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6839             !wpa_s->p2p_in_provisioning)
6840                 return 0; /* not P2P client operation */
6841
6842         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6843                    "session overlap");
6844         if (wpa_s != wpa_s->parent)
6845                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6846         wpas_p2p_group_formation_failed(wpa_s, 0);
6847         return 1;
6848 }
6849
6850
6851 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6852 {
6853         struct wpa_supplicant *wpa_s = eloop_ctx;
6854         wpas_p2p_notif_pbc_overlap(wpa_s);
6855 }
6856
6857
6858 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6859 {
6860         struct p2p_channels chan, cli_chan;
6861         struct wpa_supplicant *ifs;
6862
6863         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6864                 return;
6865
6866         os_memset(&chan, 0, sizeof(chan));
6867         os_memset(&cli_chan, 0, sizeof(cli_chan));
6868         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6869                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6870                            "channel list");
6871                 return;
6872         }
6873
6874         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6875
6876         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6877                 int freq;
6878                 if (!ifs->current_ssid ||
6879                     !ifs->current_ssid->p2p_group ||
6880                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6881                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6882                                 continue;
6883                 freq = ifs->current_ssid->frequency;
6884                 if (freq_included(&chan, freq)) {
6885                         wpa_dbg(ifs, MSG_DEBUG,
6886                                 "P2P GO operating frequency %d MHz in valid range",
6887                                 freq);
6888                         continue;
6889                 }
6890
6891                 wpa_dbg(ifs, MSG_DEBUG,
6892                         "P2P GO operating in invalid frequency %d MHz", freq);
6893                 /* TODO: Consider using CSA or removing the group within
6894                  * wpa_supplicant */
6895                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6896         }
6897 }
6898
6899
6900 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6901                                      struct wpa_scan_results *scan_res)
6902 {
6903         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6904 }
6905
6906
6907 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6908 {
6909         struct wpa_global *global = wpa_s->global;
6910         int found = 0;
6911         const u8 *peer;
6912
6913         if (global->p2p == NULL)
6914                 return -1;
6915
6916         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6917
6918         if (wpa_s->pending_interface_name[0] &&
6919             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6920                 found = 1;
6921
6922         peer = p2p_get_go_neg_peer(global->p2p);
6923         if (peer) {
6924                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6925                            MACSTR, MAC2STR(peer));
6926                 p2p_unauthorize(global->p2p, peer);
6927                 found = 1;
6928         }
6929
6930         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6931                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6932                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6933                 found = 1;
6934         }
6935
6936         if (wpa_s->pending_pd_before_join) {
6937                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6938                 wpa_s->pending_pd_before_join = 0;
6939                 found = 1;
6940         }
6941
6942         wpas_p2p_stop_find(wpa_s);
6943
6944         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6945                 if (wpa_s == global->p2p_group_formation &&
6946                     (wpa_s->p2p_in_provisioning ||
6947                      wpa_s->parent->pending_interface_type ==
6948                      WPA_IF_P2P_CLIENT)) {
6949                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6950                                    "formation found - cancelling",
6951                                    wpa_s->ifname);
6952                         found = 1;
6953                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6954                                              wpa_s->parent, NULL);
6955                         if (wpa_s->p2p_in_provisioning) {
6956                                 wpas_group_formation_completed(wpa_s, 0, 0);
6957                                 break;
6958                         }
6959                         wpas_p2p_group_delete(wpa_s,
6960                                               P2P_GROUP_REMOVAL_REQUESTED);
6961                         break;
6962                 } else if (wpa_s->p2p_in_invitation) {
6963                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6964                                    wpa_s->ifname);
6965                         found = 1;
6966                         wpas_p2p_group_formation_failed(wpa_s, 0);
6967                 }
6968         }
6969
6970         if (!found) {
6971                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6972                 return -1;
6973         }
6974
6975         return 0;
6976 }
6977
6978
6979 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6980 {
6981         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6982                 return;
6983
6984         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6985                    "being available anymore");
6986         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6987 }
6988
6989
6990 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6991                                    int freq_24, int freq_5, int freq_overall)
6992 {
6993         struct p2p_data *p2p = wpa_s->global->p2p;
6994         if (p2p == NULL)
6995                 return;
6996         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6997 }
6998
6999
7000 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7001 {
7002         u8 peer[ETH_ALEN];
7003         struct p2p_data *p2p = wpa_s->global->p2p;
7004
7005         if (p2p == NULL)
7006                 return -1;
7007
7008         if (hwaddr_aton(addr, peer))
7009                 return -1;
7010
7011         return p2p_unauthorize(p2p, peer);
7012 }
7013
7014
7015 /**
7016  * wpas_p2p_disconnect - Disconnect from a P2P Group
7017  * @wpa_s: Pointer to wpa_supplicant data
7018  * Returns: 0 on success, -1 on failure
7019  *
7020  * This can be used to disconnect from a group in which the local end is a P2P
7021  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7022  * virtual network interface was created for this group, that interface will be
7023  * removed. Otherwise, only the configured P2P group network will be removed
7024  * from the interface.
7025  */
7026 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7027 {
7028
7029         if (wpa_s == NULL)
7030                 return -1;
7031
7032         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7033                 -1 : 0;
7034 }
7035
7036
7037 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7038 {
7039         int ret;
7040
7041         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7042                 return 0;
7043
7044         ret = p2p_in_progress(wpa_s->global->p2p);
7045         if (ret == 0) {
7046                 /*
7047                  * Check whether there is an ongoing WPS provisioning step (or
7048                  * other parts of group formation) on another interface since
7049                  * p2p_in_progress() does not report this to avoid issues for
7050                  * scans during such provisioning step.
7051                  */
7052                 if (wpa_s->global->p2p_group_formation &&
7053                     wpa_s->global->p2p_group_formation != wpa_s) {
7054                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7055                                 "in group formation",
7056                                 wpa_s->global->p2p_group_formation->ifname);
7057                         ret = 1;
7058                 }
7059         }
7060
7061         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7062                 struct os_reltime now;
7063                 os_get_reltime(&now);
7064                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7065                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7066                         /* Wait for the first client has expired */
7067                         wpa_s->global->p2p_go_wait_client.sec = 0;
7068                 } else {
7069                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7070                         ret = 1;
7071                 }
7072         }
7073
7074         return ret;
7075 }
7076
7077
7078 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7079                               struct wpa_ssid *ssid)
7080 {
7081         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7082             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7083                                  wpa_s->parent, NULL) > 0) {
7084                 /**
7085                  * Remove the network by scheduling the group formation
7086                  * timeout to happen immediately. The teardown code
7087                  * needs to be scheduled to run asynch later so that we
7088                  * don't delete data from under ourselves unexpectedly.
7089                  * Calling wpas_p2p_group_formation_timeout directly
7090                  * causes a series of crashes in WPS failure scenarios.
7091                  */
7092                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7093                            "P2P group network getting removed");
7094                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7095                                        wpa_s->parent, NULL);
7096         }
7097 }
7098
7099
7100 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7101                                           const u8 *addr, const u8 *ssid,
7102                                           size_t ssid_len)
7103 {
7104         struct wpa_ssid *s;
7105         size_t i;
7106
7107         for (s = wpa_s->conf->ssid; s; s = s->next) {
7108                 if (s->disabled != 2)
7109                         continue;
7110                 if (ssid &&
7111                     (ssid_len != s->ssid_len ||
7112                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7113                         continue;
7114                 if (addr == NULL) {
7115                         if (s->mode == WPAS_MODE_P2P_GO)
7116                                 return s;
7117                         continue;
7118                 }
7119                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7120                         return s; /* peer is GO in the persistent group */
7121                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7122                         continue;
7123                 for (i = 0; i < s->num_p2p_clients; i++) {
7124                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7125                                       addr, ETH_ALEN) == 0)
7126                                 return s; /* peer is P2P client in persistent
7127                                            * group */
7128                 }
7129         }
7130
7131         return NULL;
7132 }
7133
7134
7135 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7136                                        const u8 *addr)
7137 {
7138         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7139                                  wpa_s->parent, NULL) > 0) {
7140                 /*
7141                  * This can happen if WPS provisioning step is not terminated
7142                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7143                  * peer was able to connect, there is no need to time out group
7144                  * formation after this, though. In addition, this is used with
7145                  * the initial connection wait on the GO as a separate formation
7146                  * timeout and as such, expected to be hit after the initial WPS
7147                  * provisioning step.
7148                  */
7149                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7150
7151                 if (!wpa_s->p2p_go_group_formation_completed &&
7152                     !wpa_s->group_formation_reported) {
7153                         /*
7154                          * GO has not yet notified group formation success since
7155                          * the WPS step was not completed cleanly. Do that
7156                          * notification now since the P2P Client was able to
7157                          * connect and as such, must have received the
7158                          * credential from the WPS step.
7159                          */
7160                         if (wpa_s->global->p2p)
7161                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7162                         wpas_group_formation_completed(wpa_s, 1, 0);
7163                 }
7164         }
7165         if (!wpa_s->p2p_go_group_formation_completed) {
7166                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7167                 wpa_s->p2p_go_group_formation_completed = 1;
7168                 wpa_s->global->p2p_group_formation = NULL;
7169                 wpa_s->p2p_in_provisioning = 0;
7170                 wpa_s->p2p_in_invitation = 0;
7171         }
7172         wpa_s->global->p2p_go_wait_client.sec = 0;
7173         if (addr == NULL)
7174                 return;
7175         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7176 }
7177
7178
7179 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7180                                        int group_added)
7181 {
7182         struct wpa_supplicant *group = wpa_s;
7183         int ret = 0;
7184
7185         if (wpa_s->global->p2p_group_formation)
7186                 group = wpa_s->global->p2p_group_formation;
7187         wpa_s = wpa_s->global->p2p_init_wpa_s;
7188         offchannel_send_action_done(wpa_s);
7189         if (group_added)
7190                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7191         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7192         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7193                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7194                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7195                          wpa_s->p2p_persistent_id,
7196                          wpa_s->p2p_pd_before_go_neg,
7197                          wpa_s->p2p_go_ht40,
7198                          wpa_s->p2p_go_vht);
7199         return ret;
7200 }
7201
7202
7203 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7204 {
7205         int res;
7206
7207         if (!wpa_s->p2p_fallback_to_go_neg ||
7208             wpa_s->p2p_in_provisioning <= 5)
7209                 return 0;
7210
7211         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7212                 return 0; /* peer operating as a GO */
7213
7214         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7215                 "fallback to GO Negotiation");
7216         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7217                        "reason=GO-not-found");
7218         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7219
7220         return res == 1 ? 2 : 1;
7221 }
7222
7223
7224 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7225 {
7226         struct wpa_supplicant *ifs;
7227
7228         if (wpa_s->wpa_state > WPA_SCANNING) {
7229                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7230                         "concurrent operation",
7231                         wpa_s->conf->p2p_search_delay);
7232                 return wpa_s->conf->p2p_search_delay;
7233         }
7234
7235         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7236                          radio_list) {
7237                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7238                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7239                                 "delay due to concurrent operation on "
7240                                 "interface %s",
7241                                 wpa_s->conf->p2p_search_delay,
7242                                 ifs->ifname);
7243                         return wpa_s->conf->p2p_search_delay;
7244                 }
7245         }
7246
7247         return 0;
7248 }
7249
7250
7251 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7252                                      struct wpa_ssid *s, const u8 *addr,
7253                                      int iface_addr)
7254 {
7255         struct psk_list_entry *psk, *tmp;
7256         int changed = 0;
7257
7258         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7259                               list) {
7260                 if ((iface_addr && !psk->p2p &&
7261                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7262                     (!iface_addr && psk->p2p &&
7263                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7264                         wpa_dbg(wpa_s, MSG_DEBUG,
7265                                 "P2P: Remove persistent group PSK list entry for "
7266                                 MACSTR " p2p=%u",
7267                                 MAC2STR(psk->addr), psk->p2p);
7268                         dl_list_del(&psk->list);
7269                         os_free(psk);
7270                         changed++;
7271                 }
7272         }
7273
7274         return changed;
7275 }
7276
7277
7278 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7279                          const u8 *p2p_dev_addr,
7280                          const u8 *psk, size_t psk_len)
7281 {
7282         struct wpa_ssid *ssid = wpa_s->current_ssid;
7283         struct wpa_ssid *persistent;
7284         struct psk_list_entry *p, *last;
7285
7286         if (psk_len != sizeof(p->psk))
7287                 return;
7288
7289         if (p2p_dev_addr) {
7290                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7291                         " p2p_dev_addr=" MACSTR,
7292                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7293                 if (is_zero_ether_addr(p2p_dev_addr))
7294                         p2p_dev_addr = NULL;
7295         } else {
7296                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7297                         MAC2STR(mac_addr));
7298         }
7299
7300         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7301                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7302                 /* To be added to persistent group once created */
7303                 if (wpa_s->global->add_psk == NULL) {
7304                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7305                         if (wpa_s->global->add_psk == NULL)
7306                                 return;
7307                 }
7308                 p = wpa_s->global->add_psk;
7309                 if (p2p_dev_addr) {
7310                         p->p2p = 1;
7311                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7312                 } else {
7313                         p->p2p = 0;
7314                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7315                 }
7316                 os_memcpy(p->psk, psk, psk_len);
7317                 return;
7318         }
7319
7320         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7321                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7322                 return;
7323         }
7324
7325         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7326                                              ssid->ssid_len);
7327         if (!persistent) {
7328                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7329                 return;
7330         }
7331
7332         p = os_zalloc(sizeof(*p));
7333         if (p == NULL)
7334                 return;
7335         if (p2p_dev_addr) {
7336                 p->p2p = 1;
7337                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7338         } else {
7339                 p->p2p = 0;
7340                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7341         }
7342         os_memcpy(p->psk, psk, psk_len);
7343
7344         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7345             (last = dl_list_last(&persistent->psk_list,
7346                                  struct psk_list_entry, list))) {
7347                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7348                         MACSTR " (p2p=%u) to make room for a new one",
7349                         MAC2STR(last->addr), last->p2p);
7350                 dl_list_del(&last->list);
7351                 os_free(last);
7352         }
7353
7354         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7355                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7356                                   p2p_dev_addr == NULL);
7357         if (p2p_dev_addr) {
7358                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7359                         MACSTR, MAC2STR(p2p_dev_addr));
7360         } else {
7361                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7362                         MAC2STR(mac_addr));
7363         }
7364         dl_list_add(&persistent->psk_list, &p->list);
7365
7366         if (wpa_s->parent->conf->update_config &&
7367             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7368                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7369 }
7370
7371
7372 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7373                                 struct wpa_ssid *s, const u8 *addr,
7374                                 int iface_addr)
7375 {
7376         int res;
7377
7378         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7379         if (res > 0 && wpa_s->conf->update_config &&
7380             wpa_config_write(wpa_s->confname, wpa_s->conf))
7381                 wpa_dbg(wpa_s, MSG_DEBUG,
7382                         "P2P: Failed to update configuration");
7383 }
7384
7385
7386 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7387                                       const u8 *peer, int iface_addr)
7388 {
7389         struct hostapd_data *hapd;
7390         struct hostapd_wpa_psk *psk, *prev, *rem;
7391         struct sta_info *sta;
7392
7393         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7394             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7395                 return;
7396
7397         /* Remove per-station PSK entry */
7398         hapd = wpa_s->ap_iface->bss[0];
7399         prev = NULL;
7400         psk = hapd->conf->ssid.wpa_psk;
7401         while (psk) {
7402                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7403                     (!iface_addr &&
7404                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7405                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7406                                 MACSTR " iface_addr=%d",
7407                                 MAC2STR(peer), iface_addr);
7408                         if (prev)
7409                                 prev->next = psk->next;
7410                         else
7411                                 hapd->conf->ssid.wpa_psk = psk->next;
7412                         rem = psk;
7413                         psk = psk->next;
7414                         os_free(rem);
7415                 } else {
7416                         prev = psk;
7417                         psk = psk->next;
7418                 }
7419         }
7420
7421         /* Disconnect from group */
7422         if (iface_addr)
7423                 sta = ap_get_sta(hapd, peer);
7424         else
7425                 sta = ap_get_sta_p2p(hapd, peer);
7426         if (sta) {
7427                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7428                         " (iface_addr=%d) from group",
7429                         MAC2STR(peer), iface_addr);
7430                 hostapd_drv_sta_deauth(hapd, sta->addr,
7431                                        WLAN_REASON_DEAUTH_LEAVING);
7432                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7433         }
7434 }
7435
7436
7437 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7438                             int iface_addr)
7439 {
7440         struct wpa_ssid *s;
7441         struct wpa_supplicant *w;
7442         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7443
7444         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7445
7446         /* Remove from any persistent group */
7447         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7448                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7449                         continue;
7450                 if (!iface_addr)
7451                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7452                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7453         }
7454
7455         /* Remove from any operating group */
7456         for (w = wpa_s->global->ifaces; w; w = w->next)
7457                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7458 }
7459
7460
7461 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7462 {
7463         struct wpa_supplicant *wpa_s = eloop_ctx;
7464         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7465 }
7466
7467
7468 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7469 {
7470         struct wpa_supplicant *wpa_s = eloop_ctx;
7471
7472         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7473         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7474 }
7475
7476
7477 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7478                                         struct wpa_ssid *ssid)
7479 {
7480         struct wpa_supplicant *iface;
7481
7482         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7483                 if (!iface->current_ssid ||
7484                     iface->current_ssid->frequency == freq ||
7485                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7486                      !iface->current_ssid->p2p_group))
7487                         continue;
7488
7489                 /* Remove the connection with least priority */
7490                 if (!wpas_is_p2p_prioritized(iface)) {
7491                         /* STA connection has priority over existing
7492                          * P2P connection, so remove the interface. */
7493                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7494                         eloop_register_timeout(0, 0,
7495                                                wpas_p2p_group_freq_conflict,
7496                                                iface, NULL);
7497                         /* If connection in progress is P2P connection, do not
7498                          * proceed for the connection. */
7499                         if (wpa_s == iface)
7500                                 return -1;
7501                         else
7502                                 return 0;
7503                 } else {
7504                         /* P2P connection has priority, disable the STA network
7505                          */
7506                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7507                                                        ssid);
7508                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7509                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7510                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7511                                   ETH_ALEN);
7512                         /* If P2P connection is in progress, continue
7513                          * connecting...*/
7514                         if (wpa_s == iface)
7515                                 return 0;
7516                         else
7517                                 return -1;
7518                 }
7519         }
7520
7521         return 0;
7522 }
7523
7524
7525 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7526 {
7527         struct wpa_ssid *ssid = wpa_s->current_ssid;
7528
7529         if (ssid == NULL || !ssid->p2p_group)
7530                 return 0;
7531
7532         if (wpa_s->p2p_last_4way_hs_fail &&
7533             wpa_s->p2p_last_4way_hs_fail == ssid) {
7534                 u8 go_dev_addr[ETH_ALEN];
7535                 struct wpa_ssid *persistent;
7536
7537                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7538                                               ssid->ssid,
7539                                               ssid->ssid_len) <= 0) {
7540                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7541                         goto disconnect;
7542                 }
7543
7544                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7545                         MACSTR, MAC2STR(go_dev_addr));
7546                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7547                                                      ssid->ssid,
7548                                                      ssid->ssid_len);
7549                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7550                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7551                         goto disconnect;
7552                 }
7553                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7554                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7555                                persistent->id);
7556         disconnect:
7557                 wpa_s->p2p_last_4way_hs_fail = NULL;
7558                 /*
7559                  * Remove the group from a timeout to avoid issues with caller
7560                  * continuing to use the interface if this is on a P2P group
7561                  * interface.
7562                  */
7563                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7564                                        wpa_s, NULL);
7565                 return 1;
7566         }
7567
7568         wpa_s->p2p_last_4way_hs_fail = ssid;
7569         return 0;
7570 }
7571
7572
7573 #ifdef CONFIG_WPS_NFC
7574
7575 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7576                                              struct wpabuf *p2p)
7577 {
7578         struct wpabuf *ret;
7579         size_t wsc_len;
7580
7581         if (p2p == NULL) {
7582                 wpabuf_free(wsc);
7583                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7584                 return NULL;
7585         }
7586
7587         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7588         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7589         if (ret == NULL) {
7590                 wpabuf_free(wsc);
7591                 wpabuf_free(p2p);
7592                 return NULL;
7593         }
7594
7595         wpabuf_put_be16(ret, wsc_len);
7596         if (wsc)
7597                 wpabuf_put_buf(ret, wsc);
7598         wpabuf_put_be16(ret, wpabuf_len(p2p));
7599         wpabuf_put_buf(ret, p2p);
7600
7601         wpabuf_free(wsc);
7602         wpabuf_free(p2p);
7603         wpa_hexdump_buf(MSG_DEBUG,
7604                         "P2P: Generated NFC connection handover message", ret);
7605
7606         if (ndef && ret) {
7607                 struct wpabuf *tmp;
7608                 tmp = ndef_build_p2p(ret);
7609                 wpabuf_free(ret);
7610                 if (tmp == NULL) {
7611                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7612                         return NULL;
7613                 }
7614                 ret = tmp;
7615         }
7616
7617         return ret;
7618 }
7619
7620
7621 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7622                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7623 {
7624         struct wpa_supplicant *iface;
7625
7626         if (go_dev_addr)
7627                 os_memset(go_dev_addr, 0, ETH_ALEN);
7628         if (ssid)
7629                 *ssid = NULL;
7630         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7631                 if (iface->wpa_state < WPA_ASSOCIATING ||
7632                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7633                     !iface->current_ssid->p2p_group ||
7634                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7635                         continue;
7636                 if (ssid)
7637                         *ssid = iface->current_ssid;
7638                 if (go_dev_addr)
7639                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7640                 return iface->assoc_freq;
7641         }
7642         return 0;
7643 }
7644
7645
7646 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7647                                           int ndef)
7648 {
7649         struct wpabuf *wsc, *p2p;
7650         struct wpa_ssid *ssid;
7651         u8 go_dev_addr[ETH_ALEN];
7652         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7653
7654         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7655                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7656                 return NULL;
7657         }
7658
7659         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7660             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7661                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7662                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7663                 return NULL;
7664         }
7665
7666         if (cli_freq == 0) {
7667                 wsc = wps_build_nfc_handover_req_p2p(
7668                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7669         } else
7670                 wsc = NULL;
7671         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7672                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7673                                          ssid ? ssid->ssid_len : 0);
7674
7675         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7676 }
7677
7678
7679 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7680                                           int ndef, int tag)
7681 {
7682         struct wpabuf *wsc, *p2p;
7683         struct wpa_ssid *ssid;
7684         u8 go_dev_addr[ETH_ALEN];
7685         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7686
7687         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7688                 return NULL;
7689
7690         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7691             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7692                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7693                 return NULL;
7694
7695         if (cli_freq == 0) {
7696                 wsc = wps_build_nfc_handover_sel_p2p(
7697                         wpa_s->parent->wps,
7698                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7699                         DEV_PW_NFC_CONNECTION_HANDOVER,
7700                         wpa_s->conf->wps_nfc_dh_pubkey,
7701                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7702         } else
7703                 wsc = NULL;
7704         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7705                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7706                                          ssid ? ssid->ssid_len : 0);
7707
7708         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7709 }
7710
7711
7712 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7713                                    struct p2p_nfc_params *params)
7714 {
7715         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7716                    "connection handover (freq=%d)",
7717                    params->go_freq);
7718
7719         if (params->go_freq && params->go_ssid_len) {
7720                 wpa_s->p2p_wps_method = WPS_NFC;
7721                 wpa_s->pending_join_wps_method = WPS_NFC;
7722                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7723                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7724                           ETH_ALEN);
7725                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7726                                            params->go_ssid,
7727                                            params->go_ssid_len);
7728         }
7729
7730         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7731                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7732                                 params->go_freq, -1, 0, 1, 1);
7733 }
7734
7735
7736 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7737                                   struct p2p_nfc_params *params, int tag)
7738 {
7739         int res, persistent;
7740         struct wpa_ssid *ssid;
7741
7742         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7743                    "connection handover");
7744         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7745                 ssid = wpa_s->current_ssid;
7746                 if (ssid == NULL)
7747                         continue;
7748                 if (ssid->mode != WPAS_MODE_P2P_GO)
7749                         continue;
7750                 if (wpa_s->ap_iface == NULL)
7751                         continue;
7752                 break;
7753         }
7754         if (wpa_s == NULL) {
7755                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7756                 return -1;
7757         }
7758
7759         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7760             DEV_PW_NFC_CONNECTION_HANDOVER &&
7761             !wpa_s->parent->p2p_oob_dev_pw) {
7762                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7763                 return -1;
7764         }
7765         res = wpas_ap_wps_add_nfc_pw(
7766                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7767                 wpa_s->parent->p2p_oob_dev_pw,
7768                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7769                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7770         if (res)
7771                 return res;
7772
7773         if (!tag) {
7774                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7775                 return 0;
7776         }
7777
7778         if (!params->peer ||
7779             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7780                 return 0;
7781
7782         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7783                    " to join", MAC2STR(params->peer->p2p_device_addr));
7784
7785         wpa_s->global->p2p_invite_group = wpa_s;
7786         persistent = ssid->p2p_persistent_group &&
7787                 wpas_p2p_get_persistent(wpa_s->parent,
7788                                         params->peer->p2p_device_addr,
7789                                         ssid->ssid, ssid->ssid_len);
7790         wpa_s->parent->pending_invite_ssid_id = -1;
7791
7792         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7793                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7794                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7795                           wpa_s->global->p2p_dev_addr, persistent, 0,
7796                           wpa_s->parent->p2p_oob_dev_pw_id);
7797 }
7798
7799
7800 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7801                                     struct p2p_nfc_params *params,
7802                                     int forced_freq)
7803 {
7804         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7805                    "connection handover");
7806         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7807                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7808                                 forced_freq, -1, 0, 1, 1);
7809 }
7810
7811
7812 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7813                                     struct p2p_nfc_params *params,
7814                                     int forced_freq)
7815 {
7816         int res;
7817
7818         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7819                    "connection handover");
7820         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7821                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7822                                forced_freq, -1, 0, 1, 1);
7823         if (res)
7824                 return res;
7825
7826         res = wpas_p2p_listen(wpa_s, 60);
7827         if (res) {
7828                 p2p_unauthorize(wpa_s->global->p2p,
7829                                 params->peer->p2p_device_addr);
7830         }
7831
7832         return res;
7833 }
7834
7835
7836 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7837                                             const struct wpabuf *data,
7838                                             int sel, int tag, int forced_freq)
7839 {
7840         const u8 *pos, *end;
7841         u16 len, id;
7842         struct p2p_nfc_params params;
7843         int res;
7844
7845         os_memset(&params, 0, sizeof(params));
7846         params.sel = sel;
7847
7848         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7849
7850         pos = wpabuf_head(data);
7851         end = pos + wpabuf_len(data);
7852
7853         if (end - pos < 2) {
7854                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7855                            "attributes");
7856                 return -1;
7857         }
7858         len = WPA_GET_BE16(pos);
7859         pos += 2;
7860         if (len > end - pos) {
7861                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7862                            "attributes");
7863                 return -1;
7864         }
7865         params.wsc_attr = pos;
7866         params.wsc_len = len;
7867         pos += len;
7868
7869         if (end - pos < 2) {
7870                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7871                            "attributes");
7872                 return -1;
7873         }
7874         len = WPA_GET_BE16(pos);
7875         pos += 2;
7876         if (len > end - pos) {
7877                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7878                            "attributes");
7879                 return -1;
7880         }
7881         params.p2p_attr = pos;
7882         params.p2p_len = len;
7883         pos += len;
7884
7885         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7886                     params.wsc_attr, params.wsc_len);
7887         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7888                     params.p2p_attr, params.p2p_len);
7889         if (pos < end) {
7890                 wpa_hexdump(MSG_DEBUG,
7891                             "P2P: Ignored extra data after P2P attributes",
7892                             pos, end - pos);
7893         }
7894
7895         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7896         if (res)
7897                 return res;
7898
7899         if (params.next_step == NO_ACTION)
7900                 return 0;
7901
7902         if (params.next_step == BOTH_GO) {
7903                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7904                         MAC2STR(params.peer->p2p_device_addr));
7905                 return 0;
7906         }
7907
7908         if (params.next_step == PEER_CLIENT) {
7909                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7910                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7911                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7912                                 " ssid=\"%s\"",
7913                                 MAC2STR(params.peer->p2p_device_addr),
7914                                 params.go_freq,
7915                                 MAC2STR(params.go_dev_addr),
7916                                 wpa_ssid_txt(params.go_ssid,
7917                                              params.go_ssid_len));
7918                 } else {
7919                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7920                                 "peer=" MACSTR " freq=%d",
7921                                 MAC2STR(params.peer->p2p_device_addr),
7922                                 params.go_freq);
7923                 }
7924                 return 0;
7925         }
7926
7927         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7928                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7929                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7930                 return 0;
7931         }
7932
7933         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7934         wpa_s->p2p_oob_dev_pw = NULL;
7935
7936         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7937                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7938                            "received");
7939                 return -1;
7940         }
7941
7942         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7943         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7944         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7945                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7946         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7947                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7948         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7949
7950         if (tag) {
7951                 if (id < 0x10) {
7952                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7953                                    "peer OOB Device Password Id %u", id);
7954                         return -1;
7955                 }
7956                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7957                            "Device Password Id %u", id);
7958                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7959                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7960                                 params.oob_dev_pw_len -
7961                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7962                 wpa_s->p2p_oob_dev_pw_id = id;
7963                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7964                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7965                         params.oob_dev_pw_len -
7966                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7967                 if (wpa_s->p2p_oob_dev_pw == NULL)
7968                         return -1;
7969
7970                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7971                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7972                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7973                         return -1;
7974         } else {
7975                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7976                            "without Device Password");
7977                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7978         }
7979
7980         switch (params.next_step) {
7981         case NO_ACTION:
7982         case BOTH_GO:
7983         case PEER_CLIENT:
7984                 /* already covered above */
7985                 return 0;
7986         case JOIN_GROUP:
7987                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7988         case AUTH_JOIN:
7989                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7990         case INIT_GO_NEG:
7991                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7992         case RESP_GO_NEG:
7993                 /* TODO: use own OOB Dev Pw */
7994                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7995         }
7996
7997         return -1;
7998 }
7999
8000
8001 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8002                              const struct wpabuf *data, int forced_freq)
8003 {
8004         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8005                 return -1;
8006
8007         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8008 }
8009
8010
8011 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8012                                  const struct wpabuf *req,
8013                                  const struct wpabuf *sel, int forced_freq)
8014 {
8015         struct wpabuf *tmp;
8016         int ret;
8017
8018         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8019                 return -1;
8020
8021         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8022
8023         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8024                           wpabuf_head(req), wpabuf_len(req));
8025         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8026                           wpabuf_head(sel), wpabuf_len(sel));
8027         if (forced_freq)
8028                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8029         tmp = ndef_parse_p2p(init ? sel : req);
8030         if (tmp == NULL) {
8031                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8032                 return -1;
8033         }
8034
8035         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8036                                                forced_freq);
8037         wpabuf_free(tmp);
8038
8039         return ret;
8040 }
8041
8042
8043 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8044 {
8045         const u8 *if_addr;
8046         int go_intent = wpa_s->conf->p2p_go_intent;
8047         struct wpa_supplicant *iface;
8048
8049         if (wpa_s->global->p2p == NULL)
8050                 return -1;
8051
8052         if (!enabled) {
8053                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8054                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8055                 {
8056                         if (!iface->ap_iface)
8057                                 continue;
8058                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8059                 }
8060                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8061                                                  0, NULL);
8062                 if (wpa_s->p2p_nfc_tag_enabled)
8063                         wpas_p2p_remove_pending_group_interface(wpa_s);
8064                 wpa_s->p2p_nfc_tag_enabled = 0;
8065                 return 0;
8066         }
8067
8068         if (wpa_s->global->p2p_disabled)
8069                 return -1;
8070
8071         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8072             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8073             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8074             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8075                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8076                            "to allow static handover cases");
8077                 return -1;
8078         }
8079
8080         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8081
8082         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8083         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8084         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8085         if (wpa_s->p2p_oob_dev_pw == NULL)
8086                 return -1;
8087         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8088
8089         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8090             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8091                 /*
8092                  * P2P Group Interface present and the command came on group
8093                  * interface, so enable the token for the current interface.
8094                  */
8095                 wpa_s->create_p2p_iface = 0;
8096         } else {
8097                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8098         }
8099
8100         if (wpa_s->create_p2p_iface) {
8101                 enum wpa_driver_if_type iftype;
8102                 /* Prepare to add a new interface for the group */
8103                 iftype = WPA_IF_P2P_GROUP;
8104                 if (go_intent == 15)
8105                         iftype = WPA_IF_P2P_GO;
8106                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8107                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8108                                    "interface for the group");
8109                         return -1;
8110                 }
8111
8112                 if_addr = wpa_s->pending_interface_addr;
8113         } else
8114                 if_addr = wpa_s->own_addr;
8115
8116         wpa_s->p2p_nfc_tag_enabled = enabled;
8117
8118         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8119                 struct hostapd_data *hapd;
8120                 if (iface->ap_iface == NULL)
8121                         continue;
8122                 hapd = iface->ap_iface->bss[0];
8123                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8124                 hapd->conf->wps_nfc_dh_pubkey =
8125                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8126                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8127                 hapd->conf->wps_nfc_dh_privkey =
8128                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8129                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8130                 hapd->conf->wps_nfc_dev_pw =
8131                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8132                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8133
8134                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8135                         wpa_dbg(iface, MSG_DEBUG,
8136                                 "P2P: Failed to enable NFC Tag for GO");
8137                 }
8138         }
8139         p2p_set_authorized_oob_dev_pw_id(
8140                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8141                 if_addr);
8142
8143         return 0;
8144 }
8145
8146 #endif /* CONFIG_WPS_NFC */
8147
8148
8149 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8150                                              struct wpa_used_freq_data *freqs,
8151                                              unsigned int num)
8152 {
8153         u8 curr_chan, cand, chan;
8154         unsigned int i;
8155
8156         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8157         for (i = 0, cand = 0; i < num; i++) {
8158                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8159                 if (curr_chan == chan) {
8160                         cand = 0;
8161                         break;
8162                 }
8163
8164                 if (chan == 1 || chan == 6 || chan == 11)
8165                         cand = chan;
8166         }
8167
8168         if (cand) {
8169                 wpa_dbg(wpa_s, MSG_DEBUG,
8170                         "P2P: Update Listen channel to %u based on operating channel",
8171                         cand);
8172                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8173         }
8174 }
8175
8176
8177 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8178 {
8179         struct wpa_used_freq_data *freqs;
8180         unsigned int num = wpa_s->num_multichan_concurrent;
8181
8182         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8183                 return;
8184
8185         /*
8186          * If possible, optimize the Listen channel to be a channel that is
8187          * already used by one of the other interfaces.
8188          */
8189         if (!wpa_s->conf->p2p_optimize_listen_chan)
8190                 return;
8191
8192         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8193                 return;
8194
8195         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8196         if (!freqs)
8197                 return;
8198
8199         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8200
8201         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
8202         os_free(freqs);
8203 }
8204
8205
8206 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8207 {
8208         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8209                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8210                         "the management interface is being removed");
8211                 wpas_p2p_deinit_global(wpa_s->global);
8212         }
8213 }
8214
8215
8216 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8217 {
8218         if (wpa_s->ap_iface->bss)
8219                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8220         wpas_p2p_group_deinit(wpa_s);
8221 }