wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "eapol_supp/eapol_supp_sm.h"
  26 #include "rsn_supp/wpa.h"
  27 #include "wpa_supplicant_i.h"
  28 #include "driver_i.h"
  29 #include "ap.h"
  30 #include "config_ssid.h"
  31 #include "config.h"
  32 #include "notify.h"
  33 #include "scan.h"
  34 #include "bss.h"
  35 #include "offchannel.h"
  36 #include "wps_supplicant.h"
  37 #include "p2p_supplicant.h"
  38 #include "wifi_display.h"
  39
  40
  41 /*
  42  * How many times to try to scan to find the GO before giving up on join
  43  * request.
  44  */
  45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  46
  47 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  48
  49 #ifndef P2P_MAX_CLIENT_IDLE
  50 /*
  51  * How many seconds to try to reconnect to the GO when connection in P2P client
  52  * role has been lost.
  53  */
  54 #define P2P_MAX_CLIENT_IDLE 10
  55 #endif /* P2P_MAX_CLIENT_IDLE */
  56
  57 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  58 /*
  59  * How many seconds to wait for initial 4-way handshake to get completed after
  60  * WPS provisioning step.
  61  */
  62 #define P2P_MAX_INITIAL_CONN_WAIT 10
  63 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  64
  65 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  66 /*
  67  * How many seconds to wait for initial 4-way handshake to get completed after
  68  * WPS provisioning step on the GO. This controls the extra time the P2P
  69  * operation is considered to be in progress (e.g., to delay other scans) after
  70  * WPS provisioning has been completed on the GO during group formation.
  71  */
  72 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  73 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  74
  75 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  76 /*
  77  * How many seconds to wait for initial 4-way handshake to get completed after
  78  * re-invocation of a persistent group on the GO when the client is expected
  79  * to connect automatically (no user interaction).
  80  */
  81 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  82 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  83
  84 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  85 #define P2P_CONCURRENT_SEARCH_DELAY 500
  86 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  87
  88 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  89
  90 enum p2p_group_removal_reason {
  91         P2P_GROUP_REMOVAL_UNKNOWN,
  92         P2P_GROUP_REMOVAL_SILENT,
  93         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  94         P2P_GROUP_REMOVAL_REQUESTED,
  95         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  96         P2P_GROUP_REMOVAL_UNAVAILABLE,
  97         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  98         P2P_GROUP_REMOVAL_PSK_FAILURE,
  99         P2P_GROUP_REMOVAL_FREQ_CONFLICT
 100 };
 101
 102
 103 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 104 static struct wpa_supplicant *
 105 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 106                          int go);
 107 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 108                                const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 110                                    const u8 *ssid, size_t ssid_len);
 111 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 112 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 113                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 114                          int auto_join, int freq,
 115                          const u8 *ssid, size_t ssid_len);
 116 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 117 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 119 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 120 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 121                                              void *timeout_ctx);
 122 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 123 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 124                                         int group_added);
 125 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 126
 127
 128 /*
 129  * Get the number of concurrent channels that the HW can operate, but that are
 130  * currently not in use by any of the wpa_supplicant interfaces.
 131  */
 132 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 133 {
 134         int *freqs;
 135         int num, unused;
 136
 137         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 138         if (!freqs)
 139                 return -1;
 140
 141         num = get_shared_radio_freqs(wpa_s, freqs,
 142                                      wpa_s->num_multichan_concurrent);
 143         os_free(freqs);
 144
 145         unused = wpa_s->num_multichan_concurrent - num;
 146         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 147         return unused;
 148 }
 149
 150
 151 /*
 152  * Get the frequencies that are currently in use by one or more of the virtual
 153  * interfaces, and that are also valid for P2P operation.
 154  */
 155 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 156                                      int *p2p_freqs, unsigned int len)
 157 {
 158         int *freqs;
 159         unsigned int num, i, j;
 160
 161         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 162         if (!freqs)
 163                 return -1;
 164
 165         num = get_shared_radio_freqs(wpa_s, freqs,
 166                                      wpa_s->num_multichan_concurrent);
 167
 168         os_memset(p2p_freqs, 0, sizeof(int) * len);
 169
 170         for (i = 0, j = 0; i < num && j < len; i++) {
 171                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 172                         p2p_freqs[j++] = freqs[i];
 173         }
 174
 175         os_free(freqs);
 176
 177         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 178
 179         return j;
 180 }
 181
 182
 183 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 184                                              int freq)
 185 {
 186         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 187                 return;
 188         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 189             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 190             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 191                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 192                            freq);
 193                 freq = 0;
 194         }
 195         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 196 }
 197
 198
 199 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 200                                       struct wpa_scan_results *scan_res)
 201 {
 202         size_t i;
 203
 204         if (wpa_s->p2p_scan_work) {
 205                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 206                 wpa_s->p2p_scan_work = NULL;
 207                 radio_work_done(work);
 208         }
 209
 210         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 211                 return;
 212
 213         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 214                    (int) scan_res->num);
 215
 216         for (i = 0; i < scan_res->num; i++) {
 217                 struct wpa_scan_res *bss = scan_res->res[i];
 218                 struct os_reltime time_tmp_age, entry_ts;
 219                 const u8 *ies;
 220                 size_t ies_len;
 221
 222                 time_tmp_age.sec = bss->age / 1000;
 223                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 224                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 225
 226                 ies = (const u8 *) (bss + 1);
 227                 ies_len = bss->ie_len;
 228                 if (bss->beacon_ie_len > 0 &&
 229                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 230                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 231                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 232                                    MACSTR, MAC2STR(bss->bssid));
 233                         ies = ies + ies_len;
 234                         ies_len = bss->beacon_ie_len;
 235                 }
 236
 237
 238                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 239                                          bss->freq, &entry_ts, bss->level,
 240                                          ies, ies_len) > 0)
 241                         break;
 242         }
 243
 244         p2p_scan_res_handled(wpa_s->global->p2p);
 245 }
 246
 247
 248 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 249 {
 250         struct wpa_supplicant *wpa_s = work->wpa_s;
 251         struct wpa_driver_scan_params *params = work->ctx;
 252         int ret;
 253
 254         if (deinit) {
 255                 wpa_scan_free_params(params);
 256                 return;
 257         }
 258
 259         ret = wpa_drv_scan(wpa_s, params);
 260         wpa_scan_free_params(params);
 261         work->ctx = NULL;
 262         if (ret) {
 263                 radio_work_done(work);
 264                 return;
 265         }
 266
 267         os_get_reltime(&wpa_s->scan_trigger_time);
 268         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 269         wpa_s->own_scan_requested = 1;
 270         wpa_s->p2p_scan_work = work;
 271 }
 272
 273
 274 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 275                          unsigned int num_req_dev_types,
 276                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 277 {
 278         struct wpa_supplicant *wpa_s = ctx;
 279         struct wpa_driver_scan_params *params = NULL;
 280         struct wpabuf *wps_ie, *ies;
 281         size_t ielen;
 282         u8 *n;
 283
 284         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 285                 return -1;
 286
 287         if (wpa_s->p2p_scan_work) {
 288                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 289                 return -1;
 290         }
 291
 292         params = os_zalloc(sizeof(*params));
 293         if (params == NULL)
 294                 return -1;
 295
 296         /* P2P Wildcard SSID */
 297         params->num_ssids = 1;
 298         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 299         if (n == NULL)
 300                 goto fail;
 301         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 302         params->ssids[0].ssid = n;
 303         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 304
 305         wpa_s->wps->dev.p2p = 1;
 306         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 307                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 308                                         num_req_dev_types, req_dev_types);
 309         if (wps_ie == NULL)
 310                 goto fail;
 311
 312         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 313         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 314         if (ies == NULL) {
 315                 wpabuf_free(wps_ie);
 316                 goto fail;
 317         }
 318         wpabuf_put_buf(ies, wps_ie);
 319         wpabuf_free(wps_ie);
 320
 321         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 322
 323         params->p2p_probe = 1;
 324         n = os_malloc(wpabuf_len(ies));
 325         if (n == NULL) {
 326                 wpabuf_free(ies);
 327                 goto fail;
 328         }
 329         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 330         params->extra_ies = n;
 331         params->extra_ies_len = wpabuf_len(ies);
 332         wpabuf_free(ies);
 333
 334         switch (type) {
 335         case P2P_SCAN_SOCIAL:
 336                 params->freqs = os_malloc(4 * sizeof(int));
 337                 if (params->freqs == NULL)
 338                         goto fail;
 339                 params->freqs[0] = 2412;
 340                 params->freqs[1] = 2437;
 341                 params->freqs[2] = 2462;
 342                 params->freqs[3] = 0;
 343                 break;
 344         case P2P_SCAN_FULL:
 345                 break;
 346         case P2P_SCAN_SOCIAL_PLUS_ONE:
 347                 params->freqs = os_malloc(5 * sizeof(int));
 348                 if (params->freqs == NULL)
 349                         goto fail;
 350                 params->freqs[0] = 2412;
 351                 params->freqs[1] = 2437;
 352                 params->freqs[2] = 2462;
 353                 params->freqs[3] = freq;
 354                 params->freqs[4] = 0;
 355                 break;
 356         }
 357
 358         radio_remove_unstarted_work(wpa_s, "p2p-scan");
 359         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 360                            params) < 0)
 361                 goto fail;
 362         return 0;
 363
 364 fail:
 365         wpa_scan_free_params(params);
 366         return -1;
 367 }
 368
 369
 370 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 371 {
 372         switch (p2p_group_interface) {
 373         case P2P_GROUP_INTERFACE_PENDING:
 374                 return WPA_IF_P2P_GROUP;
 375         case P2P_GROUP_INTERFACE_GO:
 376                 return WPA_IF_P2P_GO;
 377         case P2P_GROUP_INTERFACE_CLIENT:
 378                 return WPA_IF_P2P_CLIENT;
 379         }
 380
 381         return WPA_IF_P2P_GROUP;
 382 }
 383
 384
 385 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 386                                                   const u8 *ssid,
 387                                                   size_t ssid_len, int *go)
 388 {
 389         struct wpa_ssid *s;
 390
 391         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 392                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 393                         if (s->disabled != 0 || !s->p2p_group ||
 394                             s->ssid_len != ssid_len ||
 395                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 396                                 continue;
 397                         if (s->mode == WPAS_MODE_P2P_GO &&
 398                             s != wpa_s->current_ssid)
 399                                 continue;
 400                         if (go)
 401                                 *go = s->mode == WPAS_MODE_P2P_GO;
 402                         return wpa_s;
 403                 }
 404         }
 405
 406         return NULL;
 407 }
 408
 409
 410 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 411                                  enum p2p_group_removal_reason removal_reason)
 412 {
 413         struct wpa_ssid *ssid;
 414         char *gtype;
 415         const char *reason;
 416
 417         ssid = wpa_s->current_ssid;
 418         if (ssid == NULL) {
 419                 /*
 420                  * The current SSID was not known, but there may still be a
 421                  * pending P2P group interface waiting for provisioning or a
 422                  * P2P group that is trying to reconnect.
 423                  */
 424                 ssid = wpa_s->conf->ssid;
 425                 while (ssid) {
 426                         if (ssid->p2p_group && ssid->disabled != 2)
 427                                 break;
 428                         ssid = ssid->next;
 429                 }
 430                 if (ssid == NULL &&
 431                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 432                 {
 433                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 434                                    "not found");
 435                         return -1;
 436                 }
 437         }
 438         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 439                 gtype = "GO";
 440         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 441                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 442                 wpa_s->reassociate = 0;
 443                 wpa_s->disconnected = 1;
 444                 wpa_supplicant_deauthenticate(wpa_s,
 445                                               WLAN_REASON_DEAUTH_LEAVING);
 446                 gtype = "client";
 447         } else
 448                 gtype = "GO";
 449         if (wpa_s->cross_connect_in_use) {
 450                 wpa_s->cross_connect_in_use = 0;
 451                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 452                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 453                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 454         }
 455         switch (removal_reason) {
 456         case P2P_GROUP_REMOVAL_REQUESTED:
 457                 reason = " reason=REQUESTED";
 458                 break;
 459         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 460                 reason = " reason=FORMATION_FAILED";
 461                 break;
 462         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 463                 reason = " reason=IDLE";
 464                 break;
 465         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 466                 reason = " reason=UNAVAILABLE";
 467                 break;
 468         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 469                 reason = " reason=GO_ENDING_SESSION";
 470                 break;
 471         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 472                 reason = " reason=PSK_FAILURE";
 473                 break;
 474         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 475                 reason = " reason=FREQ_CONFLICT";
 476                 break;
 477         default:
 478                 reason = "";
 479                 break;
 480         }
 481         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 482                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 483                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 484                                wpa_s->ifname, gtype, reason);
 485         }
 486
 487         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 488                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 489         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 490                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 491         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 492                                  wpa_s->parent, NULL) > 0) {
 493                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 494                            "timeout");
 495                 wpa_s->p2p_in_provisioning = 0;
 496         }
 497
 498         /*
 499          * Make sure wait for the first client does not remain active after the
 500          * group has been removed.
 501          */
 502         wpa_s->global->p2p_go_wait_client.sec = 0;
 503
 504         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 505                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 506
 507         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 508                 struct wpa_global *global;
 509                 char *ifname;
 510                 enum wpa_driver_if_type type;
 511                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 512                         wpa_s->ifname);
 513                 global = wpa_s->global;
 514                 ifname = os_strdup(wpa_s->ifname);
 515                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 516                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 517                 wpa_s = global->ifaces;
 518                 if (wpa_s && ifname)
 519                         wpa_drv_if_remove(wpa_s, type, ifname);
 520                 os_free(ifname);
 521                 return 1;
 522         }
 523
 524         if (!wpa_s->p2p_go_group_formation_completed) {
 525                 wpa_s->global->p2p_group_formation = NULL;
 526                 wpa_s->p2p_in_provisioning = 0;
 527         }
 528
 529         wpa_s->show_group_started = 0;
 530         os_free(wpa_s->go_params);
 531         wpa_s->go_params = NULL;
 532
 533         wpa_s->waiting_presence_resp = 0;
 534
 535         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 536         if (ssid && (ssid->p2p_group ||
 537                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 538                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 539                 int id = ssid->id;
 540                 if (ssid == wpa_s->current_ssid) {
 541                         wpa_sm_set_config(wpa_s->wpa, NULL);
 542                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 543                         wpa_s->current_ssid = NULL;
 544                 }
 545                 /*
 546                  * Networks objects created during any P2P activities are not
 547                  * exposed out as they might/will confuse certain non-P2P aware
 548                  * applications since these network objects won't behave like
 549                  * regular ones.
 550                  *
 551                  * Likewise, we don't send out network removed signals for such
 552                  * network objects.
 553                  */
 554                 wpa_config_remove_network(wpa_s->conf, id);
 555                 wpa_supplicant_clear_status(wpa_s);
 556                 wpa_supplicant_cancel_sched_scan(wpa_s);
 557         } else {
 558                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 559                            "found");
 560         }
 561         if (wpa_s->ap_iface)
 562                 wpa_supplicant_ap_deinit(wpa_s);
 563         else
 564                 wpa_drv_deinit_p2p_cli(wpa_s);
 565
 566         return 0;
 567 }
 568
 569
 570 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 571                                      u8 *go_dev_addr,
 572                                      const u8 *ssid, size_t ssid_len)
 573 {
 574         struct wpa_bss *bss;
 575         const u8 *bssid;
 576         struct wpabuf *p2p;
 577         u8 group_capab;
 578         const u8 *addr;
 579
 580         if (wpa_s->go_params)
 581                 bssid = wpa_s->go_params->peer_interface_addr;
 582         else
 583                 bssid = wpa_s->bssid;
 584
 585         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 586         if (bss == NULL && wpa_s->go_params &&
 587             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 588                 bss = wpa_bss_get_p2p_dev_addr(
 589                         wpa_s, wpa_s->go_params->peer_device_addr);
 590         if (bss == NULL) {
 591                 u8 iface_addr[ETH_ALEN];
 592                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 593                                            iface_addr) == 0)
 594                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 595         }
 596         if (bss == NULL) {
 597                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 598                            "group is persistent - BSS " MACSTR " not found",
 599                            MAC2STR(bssid));
 600                 return 0;
 601         }
 602
 603         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 604         if (p2p == NULL)
 605                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 606                                                          P2P_IE_VENDOR_TYPE);
 607         if (p2p == NULL) {
 608                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 609                            "group is persistent - BSS " MACSTR
 610                            " did not include P2P IE", MAC2STR(bssid));
 611                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 612                             (u8 *) (bss + 1), bss->ie_len);
 613                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 614                             ((u8 *) bss + 1) + bss->ie_len,
 615                             bss->beacon_ie_len);
 616                 return 0;
 617         }
 618
 619         group_capab = p2p_get_group_capab(p2p);
 620         addr = p2p_get_go_dev_addr(p2p);
 621         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 622                    "group_capab=0x%x", group_capab);
 623         if (addr) {
 624                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 625                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 626                            MAC2STR(addr));
 627         } else
 628                 os_memset(go_dev_addr, 0, ETH_ALEN);
 629         wpabuf_free(p2p);
 630
 631         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 632                    "go_dev_addr=" MACSTR,
 633                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 634
 635         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 636 }
 637
 638
 639 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 640                                            struct wpa_ssid *ssid,
 641                                            const u8 *go_dev_addr)
 642 {
 643         struct wpa_ssid *s;
 644         int changed = 0;
 645
 646         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 647                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 648         for (s = wpa_s->conf->ssid; s; s = s->next) {
 649                 if (s->disabled == 2 &&
 650                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 651                     s->ssid_len == ssid->ssid_len &&
 652                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 653                         break;
 654         }
 655
 656         if (s) {
 657                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 658                            "entry");
 659                 if (ssid->passphrase && !s->passphrase)
 660                         changed = 1;
 661                 else if (ssid->passphrase && s->passphrase &&
 662                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 663                         changed = 1;
 664         } else {
 665                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 666                            "entry");
 667                 changed = 1;
 668                 s = wpa_config_add_network(wpa_s->conf);
 669                 if (s == NULL)
 670                         return -1;
 671
 672                 /*
 673                  * Instead of network_added we emit persistent_group_added
 674                  * notification. Also to keep the defense checks in
 675                  * persistent_group obj registration method, we set the
 676                  * relevant flags in s to designate it as a persistent group.
 677                  */
 678                 s->p2p_group = 1;
 679                 s->p2p_persistent_group = 1;
 680                 wpas_notify_persistent_group_added(wpa_s, s);
 681                 wpa_config_set_network_defaults(s);
 682         }
 683
 684         s->p2p_group = 1;
 685         s->p2p_persistent_group = 1;
 686         s->disabled = 2;
 687         s->bssid_set = 1;
 688         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 689         s->mode = ssid->mode;
 690         s->auth_alg = WPA_AUTH_ALG_OPEN;
 691         s->key_mgmt = WPA_KEY_MGMT_PSK;
 692         s->proto = WPA_PROTO_RSN;
 693         s->pairwise_cipher = WPA_CIPHER_CCMP;
 694         s->export_keys = 1;
 695         if (ssid->passphrase) {
 696                 os_free(s->passphrase);
 697                 s->passphrase = os_strdup(ssid->passphrase);
 698         }
 699         if (ssid->psk_set) {
 700                 s->psk_set = 1;
 701                 os_memcpy(s->psk, ssid->psk, 32);
 702         }
 703         if (s->passphrase && !s->psk_set)
 704                 wpa_config_update_psk(s);
 705         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 706                 os_free(s->ssid);
 707                 s->ssid = os_malloc(ssid->ssid_len);
 708         }
 709         if (s->ssid) {
 710                 s->ssid_len = ssid->ssid_len;
 711                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 712         }
 713         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 714                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 715                 wpa_s->global->add_psk = NULL;
 716                 changed = 1;
 717         }
 718
 719 #ifndef CONFIG_NO_CONFIG_WRITE
 720         if (changed && wpa_s->conf->update_config &&
 721             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 722                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 723         }
 724 #endif /* CONFIG_NO_CONFIG_WRITE */
 725
 726         return s->id;
 727 }
 728
 729
 730 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 731                                                  const u8 *addr)
 732 {
 733         struct wpa_ssid *ssid, *s;
 734         u8 *n;
 735         size_t i;
 736         int found = 0;
 737
 738         ssid = wpa_s->current_ssid;
 739         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 740             !ssid->p2p_persistent_group)
 741                 return;
 742
 743         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 744                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 745                         continue;
 746
 747                 if (s->ssid_len == ssid->ssid_len &&
 748                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 749                         break;
 750         }
 751
 752         if (s == NULL)
 753                 return;
 754
 755         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 756                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 757                               ETH_ALEN) != 0)
 758                         continue;
 759
 760                 if (i == s->num_p2p_clients - 1)
 761                         return; /* already the most recent entry */
 762
 763                 /* move the entry to mark it most recent */
 764                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 765                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 766                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 767                 os_memcpy(s->p2p_client_list +
 768                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 769                 found = 1;
 770                 break;
 771         }
 772
 773         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 774                 n = os_realloc_array(s->p2p_client_list,
 775                                      s->num_p2p_clients + 1, ETH_ALEN);
 776                 if (n == NULL)
 777                         return;
 778                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 779                 s->p2p_client_list = n;
 780                 s->num_p2p_clients++;
 781         } else if (!found) {
 782                 /* Not enough room for an additional entry - drop the oldest
 783                  * entry */
 784                 os_memmove(s->p2p_client_list,
 785                            s->p2p_client_list + ETH_ALEN,
 786                            (s->num_p2p_clients - 1) * ETH_ALEN);
 787                 os_memcpy(s->p2p_client_list +
 788                           (s->num_p2p_clients - 1) * ETH_ALEN,
 789                           addr, ETH_ALEN);
 790         }
 791
 792 #ifndef CONFIG_NO_CONFIG_WRITE
 793         if (wpa_s->parent->conf->update_config &&
 794             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 795                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 796 #endif /* CONFIG_NO_CONFIG_WRITE */
 797 }
 798
 799
 800 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 801                                            int success)
 802 {
 803         struct wpa_ssid *ssid;
 804         const char *ssid_txt;
 805         int client;
 806         int persistent;
 807         u8 go_dev_addr[ETH_ALEN];
 808         int network_id = -1;
 809
 810         /*
 811          * This callback is likely called for the main interface. Update wpa_s
 812          * to use the group interface if a new interface was created for the
 813          * group.
 814          */
 815         if (wpa_s->global->p2p_group_formation)
 816                 wpa_s = wpa_s->global->p2p_group_formation;
 817         if (wpa_s->p2p_go_group_formation_completed) {
 818                 wpa_s->global->p2p_group_formation = NULL;
 819                 wpa_s->p2p_in_provisioning = 0;
 820         }
 821
 822         if (!success) {
 823                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 824                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 825                 wpas_p2p_group_delete(wpa_s,
 826                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 827                 return;
 828         }
 829
 830         wpa_msg_global(wpa_s->parent, MSG_INFO,
 831                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 832
 833         ssid = wpa_s->current_ssid;
 834         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 835                 ssid->mode = WPAS_MODE_P2P_GO;
 836                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 837                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 838         }
 839
 840         persistent = 0;
 841         if (ssid) {
 842                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 843                 client = ssid->mode == WPAS_MODE_INFRA;
 844                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 845                         persistent = ssid->p2p_persistent_group;
 846                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 847                                   ETH_ALEN);
 848                 } else
 849                         persistent = wpas_p2p_persistent_group(wpa_s,
 850                                                                go_dev_addr,
 851                                                                ssid->ssid,
 852                                                                ssid->ssid_len);
 853         } else {
 854                 ssid_txt = "";
 855                 client = wpa_s->p2p_group_interface ==
 856                         P2P_GROUP_INTERFACE_CLIENT;
 857                 os_memset(go_dev_addr, 0, ETH_ALEN);
 858         }
 859
 860         wpa_s->show_group_started = 0;
 861         if (client) {
 862                 /*
 863                  * Indicate event only after successfully completed 4-way
 864                  * handshake, i.e., when the interface is ready for data
 865                  * packets.
 866                  */
 867                 wpa_s->show_group_started = 1;
 868         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 869                 char psk[65];
 870                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 871                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 872                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 873                                MACSTR "%s",
 874                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 875                                MAC2STR(go_dev_addr),
 876                                persistent ? " [PERSISTENT]" : "");
 877                 wpas_p2p_cross_connect_setup(wpa_s);
 878                 wpas_p2p_set_group_idle_timeout(wpa_s);
 879         } else {
 880                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 881                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 882                                "go_dev_addr=" MACSTR "%s",
 883                                wpa_s->ifname, ssid_txt,
 884                                ssid ? ssid->frequency : 0,
 885                                ssid && ssid->passphrase ? ssid->passphrase : "",
 886                                MAC2STR(go_dev_addr),
 887                                persistent ? " [PERSISTENT]" : "");
 888                 wpas_p2p_cross_connect_setup(wpa_s);
 889                 wpas_p2p_set_group_idle_timeout(wpa_s);
 890         }
 891
 892         if (persistent)
 893                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 894                                                              ssid, go_dev_addr);
 895         else {
 896                 os_free(wpa_s->global->add_psk);
 897                 wpa_s->global->add_psk = NULL;
 898         }
 899         if (network_id < 0 && ssid)
 900                 network_id = ssid->id;
 901         if (!client) {
 902                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 903                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 904         }
 905 }
 906
 907
 908 struct send_action_work {
 909         unsigned int freq;
 910         u8 dst[ETH_ALEN];
 911         u8 src[ETH_ALEN];
 912         u8 bssid[ETH_ALEN];
 913         size_t len;
 914         unsigned int wait_time;
 915         u8 buf[0];
 916 };
 917
 918
 919 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 920                                               void *timeout_ctx)
 921 {
 922         struct wpa_supplicant *wpa_s = eloop_ctx;
 923
 924         if (!wpa_s->p2p_send_action_work)
 925                 return;
 926
 927         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 928         os_free(wpa_s->p2p_send_action_work->ctx);
 929         radio_work_done(wpa_s->p2p_send_action_work);
 930         wpa_s->p2p_send_action_work = NULL;
 931 }
 932
 933
 934 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 935                                            unsigned int freq,
 936                                            const u8 *dst, const u8 *src,
 937                                            const u8 *bssid,
 938                                            const u8 *data, size_t data_len,
 939                                            enum offchannel_send_action_result
 940                                            result)
 941 {
 942         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 943
 944         if (wpa_s->p2p_send_action_work) {
 945                 struct send_action_work *awork;
 946                 awork = wpa_s->p2p_send_action_work->ctx;
 947                 if (awork->wait_time == 0) {
 948                         os_free(awork);
 949                         radio_work_done(wpa_s->p2p_send_action_work);
 950                         wpa_s->p2p_send_action_work = NULL;
 951                 } else {
 952                         /*
 953                          * In theory, this should not be needed, but number of
 954                          * places in the P2P code is still using non-zero wait
 955                          * time for the last Action frame in the sequence and
 956                          * some of these do not call send_action_done().
 957                          */
 958                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 959                                              wpa_s, NULL);
 960                         eloop_register_timeout(
 961                                 0, awork->wait_time * 1000,
 962                                 wpas_p2p_send_action_work_timeout,
 963                                 wpa_s, NULL);
 964                 }
 965         }
 966
 967         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 968                 return;
 969
 970         switch (result) {
 971         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 972                 res = P2P_SEND_ACTION_SUCCESS;
 973                 break;
 974         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 975                 res = P2P_SEND_ACTION_NO_ACK;
 976                 break;
 977         case OFFCHANNEL_SEND_ACTION_FAILED:
 978                 res = P2P_SEND_ACTION_FAILED;
 979                 break;
 980         }
 981
 982         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 983
 984         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 985             wpa_s->pending_pd_before_join &&
 986             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 987              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 988             wpa_s->p2p_fallback_to_go_neg) {
 989                 wpa_s->pending_pd_before_join = 0;
 990                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 991                         "during p2p_connect-auto");
 992                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 993                 return;
 994         }
 995 }
 996
 997
 998 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
 999 {
1000         struct wpa_supplicant *wpa_s = work->wpa_s;
1001         struct send_action_work *awork = work->ctx;
1002
1003         if (deinit) {
1004                 os_free(awork);
1005                 return;
1006         }
1007
1008         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1009                                    awork->bssid, awork->buf, awork->len,
1010                                    awork->wait_time,
1011                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1012                 os_free(awork);
1013                 radio_work_done(work);
1014                 return;
1015         }
1016         wpa_s->p2p_send_action_work = work;
1017 }
1018
1019
1020 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1021                                  unsigned int freq, const u8 *dst,
1022                                  const u8 *src, const u8 *bssid, const u8 *buf,
1023                                  size_t len, unsigned int wait_time)
1024 {
1025         struct send_action_work *awork;
1026
1027         if (wpa_s->p2p_send_action_work) {
1028                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1029                 return -1;
1030         }
1031
1032         awork = os_zalloc(sizeof(*awork) + len);
1033         if (awork == NULL)
1034                 return -1;
1035
1036         awork->freq = freq;
1037         os_memcpy(awork->dst, dst, ETH_ALEN);
1038         os_memcpy(awork->src, src, ETH_ALEN);
1039         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1040         awork->len = len;
1041         awork->wait_time = wait_time;
1042         os_memcpy(awork->buf, buf, len);
1043
1044         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1045                            wpas_send_action_cb, awork) < 0) {
1046                 os_free(awork);
1047                 return -1;
1048         }
1049
1050         return 0;
1051 }
1052
1053
1054 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1055                             const u8 *src, const u8 *bssid, const u8 *buf,
1056                             size_t len, unsigned int wait_time)
1057 {
1058         struct wpa_supplicant *wpa_s = ctx;
1059         int listen_freq = -1, send_freq = -1;
1060
1061         if (wpa_s->p2p_listen_work)
1062                 listen_freq = wpa_s->p2p_listen_work->freq;
1063         if (wpa_s->p2p_send_action_work)
1064                 send_freq = wpa_s->p2p_send_action_work->freq;
1065         if (listen_freq != (int) freq && send_freq != (int) freq) {
1066                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1067                            listen_freq, send_freq);
1068                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1069                                              len, wait_time);
1070         }
1071
1072         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1073         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1074                                       wait_time,
1075                                       wpas_p2p_send_action_tx_status, 1);
1076 }
1077
1078
1079 static void wpas_send_action_done(void *ctx)
1080 {
1081         struct wpa_supplicant *wpa_s = ctx;
1082
1083         if (wpa_s->p2p_send_action_work) {
1084                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1085                                      wpa_s, NULL);
1086                 os_free(wpa_s->p2p_send_action_work->ctx);
1087                 radio_work_done(wpa_s->p2p_send_action_work);
1088                 wpa_s->p2p_send_action_work = NULL;
1089         }
1090
1091         offchannel_send_action_done(wpa_s);
1092 }
1093
1094
1095 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1096                                     struct p2p_go_neg_results *params)
1097 {
1098         if (wpa_s->go_params == NULL) {
1099                 wpa_s->go_params = os_malloc(sizeof(*params));
1100                 if (wpa_s->go_params == NULL)
1101                         return -1;
1102         }
1103         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1104         return 0;
1105 }
1106
1107
1108 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1109                                     struct p2p_go_neg_results *res)
1110 {
1111         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1112                    " dev_addr " MACSTR " wps_method %d",
1113                    MAC2STR(res->peer_interface_addr),
1114                    MAC2STR(res->peer_device_addr), res->wps_method);
1115         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1116                           res->ssid, res->ssid_len);
1117         wpa_supplicant_ap_deinit(wpa_s);
1118         wpas_copy_go_neg_results(wpa_s, res);
1119         if (res->wps_method == WPS_PBC) {
1120                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1121 #ifdef CONFIG_WPS_NFC
1122         } else if (res->wps_method == WPS_NFC) {
1123                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1124                                    res->peer_interface_addr,
1125                                    wpa_s->parent->p2p_oob_dev_pw,
1126                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1127                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1128                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1129                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1130                                    NULL,
1131                                    NULL, 0, 0);
1132 #endif /* CONFIG_WPS_NFC */
1133         } else {
1134                 u16 dev_pw_id = DEV_PW_DEFAULT;
1135                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1136                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1137                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1138                                    wpa_s->p2p_pin, 1, dev_pw_id);
1139         }
1140 }
1141
1142
1143 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1144                                   struct wpa_ssid *ssid)
1145 {
1146         struct wpa_ssid *persistent;
1147         struct psk_list_entry *psk;
1148         struct hostapd_data *hapd;
1149
1150         if (!wpa_s->ap_iface)
1151                 return;
1152
1153         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1154                                              ssid->ssid_len);
1155         if (persistent == NULL)
1156                 return;
1157
1158         hapd = wpa_s->ap_iface->bss[0];
1159
1160         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1161                          list) {
1162                 struct hostapd_wpa_psk *hpsk;
1163
1164                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1165                         MACSTR " psk=%d",
1166                         MAC2STR(psk->addr), psk->p2p);
1167                 hpsk = os_zalloc(sizeof(*hpsk));
1168                 if (hpsk == NULL)
1169                         break;
1170                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1171                 if (psk->p2p)
1172                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1173                 else
1174                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1175                 hpsk->next = hapd->conf->ssid.wpa_psk;
1176                 hapd->conf->ssid.wpa_psk = hpsk;
1177         }
1178 }
1179
1180
1181 static void p2p_go_configured(void *ctx, void *data)
1182 {
1183         struct wpa_supplicant *wpa_s = ctx;
1184         struct p2p_go_neg_results *params = data;
1185         struct wpa_ssid *ssid;
1186         int network_id = -1;
1187
1188         ssid = wpa_s->current_ssid;
1189         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1190                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1191                 if (wpa_s->global->p2p_group_formation == wpa_s)
1192                         wpa_s->global->p2p_group_formation = NULL;
1193                 if (os_strlen(params->passphrase) > 0) {
1194                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1195                                        P2P_EVENT_GROUP_STARTED
1196                                        "%s GO ssid=\"%s\" freq=%d "
1197                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1198                                        "%s", wpa_s->ifname,
1199                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1200                                        ssid->frequency, params->passphrase,
1201                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1202                                        params->persistent_group ?
1203                                        " [PERSISTENT]" : "");
1204                 } else {
1205                         char psk[65];
1206                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1207                                          sizeof(params->psk));
1208                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1209                                        P2P_EVENT_GROUP_STARTED
1210                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1211                                        "go_dev_addr=" MACSTR "%s",
1212                                        wpa_s->ifname,
1213                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1214                                        ssid->frequency, psk,
1215                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1216                                        params->persistent_group ?
1217                                        " [PERSISTENT]" : "");
1218                 }
1219
1220                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1221                 if (params->persistent_group) {
1222                         network_id = wpas_p2p_store_persistent_group(
1223                                 wpa_s->parent, ssid,
1224                                 wpa_s->global->p2p_dev_addr);
1225                         wpas_p2p_add_psk_list(wpa_s, ssid);
1226                 }
1227                 if (network_id < 0)
1228                         network_id = ssid->id;
1229                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1230                 wpas_p2p_cross_connect_setup(wpa_s);
1231                 wpas_p2p_set_group_idle_timeout(wpa_s);
1232
1233                 if (wpa_s->p2p_first_connection_timeout) {
1234                         wpa_dbg(wpa_s, MSG_DEBUG,
1235                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1236                                 wpa_s->p2p_first_connection_timeout);
1237                         wpa_s->p2p_go_group_formation_completed = 0;
1238                         wpa_s->global->p2p_group_formation = wpa_s;
1239                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1240                                              wpa_s->parent, NULL);
1241                         eloop_register_timeout(
1242                                 wpa_s->p2p_first_connection_timeout, 0,
1243                                 wpas_p2p_group_formation_timeout,
1244                                 wpa_s->parent, NULL);
1245                 }
1246
1247                 return;
1248         }
1249
1250         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1251         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1252                                               params->peer_interface_addr)) {
1253                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1254                            "filtering");
1255                 return;
1256         }
1257         if (params->wps_method == WPS_PBC) {
1258                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1259                                           params->peer_device_addr);
1260 #ifdef CONFIG_WPS_NFC
1261         } else if (params->wps_method == WPS_NFC) {
1262                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1263                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1264                     !wpa_s->parent->p2p_oob_dev_pw) {
1265                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1266                         return;
1267                 }
1268                 wpas_ap_wps_add_nfc_pw(
1269                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1270                         wpa_s->parent->p2p_oob_dev_pw,
1271                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1272                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1273 #endif /* CONFIG_WPS_NFC */
1274         } else if (wpa_s->p2p_pin[0])
1275                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1276                                           wpa_s->p2p_pin, NULL, 0, 0);
1277         os_free(wpa_s->go_params);
1278         wpa_s->go_params = NULL;
1279 }
1280
1281
1282 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1283                               struct p2p_go_neg_results *params,
1284                               int group_formation)
1285 {
1286         struct wpa_ssid *ssid;
1287
1288         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1289         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1290                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1291                         "results");
1292                 return;
1293         }
1294
1295         ssid = wpa_config_add_network(wpa_s->conf);
1296         if (ssid == NULL) {
1297                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1298                 return;
1299         }
1300
1301         wpa_s->show_group_started = 0;
1302
1303         wpa_config_set_network_defaults(ssid);
1304         ssid->temporary = 1;
1305         ssid->p2p_group = 1;
1306         ssid->p2p_persistent_group = params->persistent_group;
1307         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1308                 WPAS_MODE_P2P_GO;
1309         ssid->frequency = params->freq;
1310         ssid->ht40 = params->ht40;
1311         ssid->vht = params->vht;
1312         ssid->ssid = os_zalloc(params->ssid_len + 1);
1313         if (ssid->ssid) {
1314                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1315                 ssid->ssid_len = params->ssid_len;
1316         }
1317         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1318         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1319         ssid->proto = WPA_PROTO_RSN;
1320         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1321         if (os_strlen(params->passphrase) > 0) {
1322                 ssid->passphrase = os_strdup(params->passphrase);
1323                 if (ssid->passphrase == NULL) {
1324                         wpa_msg_global(wpa_s, MSG_ERROR,
1325                                        "P2P: Failed to copy passphrase for GO");
1326                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1327                         return;
1328                 }
1329         } else
1330                 ssid->passphrase = NULL;
1331         ssid->psk_set = params->psk_set;
1332         if (ssid->psk_set)
1333                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1334         else if (ssid->passphrase)
1335                 wpa_config_update_psk(ssid);
1336         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1337
1338         wpa_s->ap_configured_cb = p2p_go_configured;
1339         wpa_s->ap_configured_cb_ctx = wpa_s;
1340         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1341         wpa_s->connect_without_scan = ssid;
1342         wpa_s->reassociate = 1;
1343         wpa_s->disconnected = 0;
1344         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1345                 "start GO)");
1346         wpa_supplicant_req_scan(wpa_s, 0, 0);
1347 }
1348
1349
1350 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1351                                   const struct wpa_supplicant *src)
1352 {
1353         struct wpa_config *d;
1354         const struct wpa_config *s;
1355
1356         d = dst->conf;
1357         s = src->conf;
1358
1359 #define C(n) if (s->n) d->n = os_strdup(s->n)
1360         C(device_name);
1361         C(manufacturer);
1362         C(model_name);
1363         C(model_number);
1364         C(serial_number);
1365         C(config_methods);
1366 #undef C
1367
1368         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1369         os_memcpy(d->sec_device_type, s->sec_device_type,
1370                   sizeof(d->sec_device_type));
1371         d->num_sec_device_types = s->num_sec_device_types;
1372
1373         d->p2p_group_idle = s->p2p_group_idle;
1374         d->p2p_intra_bss = s->p2p_intra_bss;
1375         d->persistent_reconnect = s->persistent_reconnect;
1376         d->max_num_sta = s->max_num_sta;
1377         d->pbc_in_m1 = s->pbc_in_m1;
1378         d->ignore_old_scan_res = s->ignore_old_scan_res;
1379         d->beacon_int = s->beacon_int;
1380         d->dtim_period = s->dtim_period;
1381         d->disassoc_low_ack = s->disassoc_low_ack;
1382         d->disable_scan_offload = s->disable_scan_offload;
1383
1384         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1385                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1386                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1387         }
1388 }
1389
1390
1391 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1392                                       char *ifname, size_t len)
1393 {
1394         char *ifname_ptr = wpa_s->ifname;
1395
1396         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1397                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1398                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1399         }
1400
1401         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1402         if (os_strlen(ifname) >= IFNAMSIZ &&
1403             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1404                 /* Try to avoid going over the IFNAMSIZ length limit */
1405                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1406         }
1407 }
1408
1409
1410 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1411                                         enum wpa_driver_if_type type)
1412 {
1413         char ifname[120], force_ifname[120];
1414
1415         if (wpa_s->pending_interface_name[0]) {
1416                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1417                            "- skip creation of a new one");
1418                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1419                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1420                                    "unknown?! ifname='%s'",
1421                                    wpa_s->pending_interface_name);
1422                         return -1;
1423                 }
1424                 return 0;
1425         }
1426
1427         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1428         force_ifname[0] = '\0';
1429
1430         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1431                    ifname);
1432         wpa_s->p2p_group_idx++;
1433
1434         wpa_s->pending_interface_type = type;
1435         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1436                            wpa_s->pending_interface_addr, NULL) < 0) {
1437                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1438                            "interface");
1439                 return -1;
1440         }
1441
1442         if (force_ifname[0]) {
1443                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1444                            force_ifname);
1445                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1446                            sizeof(wpa_s->pending_interface_name));
1447         } else
1448                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1449                            sizeof(wpa_s->pending_interface_name));
1450         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1451                    MACSTR, wpa_s->pending_interface_name,
1452                    MAC2STR(wpa_s->pending_interface_addr));
1453
1454         return 0;
1455 }
1456
1457
1458 static void wpas_p2p_remove_pending_group_interface(
1459         struct wpa_supplicant *wpa_s)
1460 {
1461         if (!wpa_s->pending_interface_name[0] ||
1462             is_zero_ether_addr(wpa_s->pending_interface_addr))
1463                 return; /* No pending virtual interface */
1464
1465         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1466                    wpa_s->pending_interface_name);
1467         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1468                           wpa_s->pending_interface_name);
1469         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1470         wpa_s->pending_interface_name[0] = '\0';
1471 }
1472
1473
1474 static struct wpa_supplicant *
1475 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1476 {
1477         struct wpa_interface iface;
1478         struct wpa_supplicant *group_wpa_s;
1479
1480         if (!wpa_s->pending_interface_name[0]) {
1481                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1482                 if (!wpas_p2p_create_iface(wpa_s))
1483                         return NULL;
1484                 /*
1485                  * Something has forced us to remove the pending interface; try
1486                  * to create a new one and hope for the best that we will get
1487                  * the same local address.
1488                  */
1489                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1490                                                  WPA_IF_P2P_CLIENT) < 0)
1491                         return NULL;
1492         }
1493
1494         os_memset(&iface, 0, sizeof(iface));
1495         iface.ifname = wpa_s->pending_interface_name;
1496         iface.driver = wpa_s->driver->name;
1497         if (wpa_s->conf->ctrl_interface == NULL &&
1498             wpa_s->parent != wpa_s &&
1499             wpa_s->p2p_mgmt &&
1500             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1501                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1502         else
1503                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1504         iface.driver_param = wpa_s->conf->driver_param;
1505         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1506         if (group_wpa_s == NULL) {
1507                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1508                            "wpa_supplicant interface");
1509                 return NULL;
1510         }
1511         wpa_s->pending_interface_name[0] = '\0';
1512         group_wpa_s->parent = wpa_s;
1513         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1514                 P2P_GROUP_INTERFACE_CLIENT;
1515         wpa_s->global->p2p_group_formation = group_wpa_s;
1516
1517         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1518
1519         return group_wpa_s;
1520 }
1521
1522
1523 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1524                                              void *timeout_ctx)
1525 {
1526         struct wpa_supplicant *wpa_s = eloop_ctx;
1527         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1528         wpas_p2p_group_formation_failed(wpa_s);
1529 }
1530
1531
1532 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1533 {
1534         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1535                              wpa_s->parent, NULL);
1536         if (wpa_s->global->p2p)
1537                 p2p_group_formation_failed(wpa_s->global->p2p);
1538         wpas_group_formation_completed(wpa_s, 0);
1539 }
1540
1541
1542 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1543 {
1544         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1545         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1546                              wpa_s->parent, NULL);
1547         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1548                                wpa_s->parent, NULL);
1549         wpa_s->global->p2p_fail_on_wps_complete = 0;
1550 }
1551
1552
1553 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1554 {
1555         if (wpa_s->global->p2p_group_formation != wpa_s)
1556                 return;
1557         /* Speed up group formation timeout since this cannot succeed */
1558         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1559                              wpa_s->parent, NULL);
1560         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1561                                wpa_s->parent, NULL);
1562 }
1563
1564
1565 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1566 {
1567         struct wpa_supplicant *wpa_s = ctx;
1568
1569         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1570                 wpa_drv_cancel_remain_on_channel(wpa_s);
1571                 wpa_s->off_channel_freq = 0;
1572                 wpa_s->roc_waiting_drv_freq = 0;
1573         }
1574
1575         if (res->status) {
1576                 wpa_msg_global(wpa_s, MSG_INFO,
1577                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1578                                res->status);
1579                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1580                 wpas_p2p_remove_pending_group_interface(wpa_s);
1581                 return;
1582         }
1583
1584         if (wpa_s->p2p_go_ht40)
1585                 res->ht40 = 1;
1586         if (wpa_s->p2p_go_vht)
1587                 res->vht = 1;
1588
1589         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1590                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1591                        " wps_method=%s",
1592                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1593                        MAC2STR(res->peer_device_addr),
1594                        MAC2STR(res->peer_interface_addr),
1595                        p2p_wps_method_text(res->wps_method));
1596         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1597
1598         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1599                 struct wpa_ssid *ssid;
1600                 ssid = wpa_config_get_network(wpa_s->conf,
1601                                               wpa_s->p2p_persistent_id);
1602                 if (ssid && ssid->disabled == 2 &&
1603                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1604                         size_t len = os_strlen(ssid->passphrase);
1605                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1606                                    "on requested persistent group");
1607                         os_memcpy(res->passphrase, ssid->passphrase, len);
1608                         res->passphrase[len] = '\0';
1609                 }
1610         }
1611
1612         if (wpa_s->create_p2p_iface) {
1613                 struct wpa_supplicant *group_wpa_s =
1614                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1615                 if (group_wpa_s == NULL) {
1616                         wpas_p2p_remove_pending_group_interface(wpa_s);
1617                         return;
1618                 }
1619                 if (group_wpa_s != wpa_s) {
1620                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1621                                   sizeof(group_wpa_s->p2p_pin));
1622                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1623                 }
1624                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1625                 wpa_s->pending_interface_name[0] = '\0';
1626                 group_wpa_s->p2p_in_provisioning = 1;
1627
1628                 if (res->role_go)
1629                         wpas_start_wps_go(group_wpa_s, res, 1);
1630                 else
1631                         wpas_start_wps_enrollee(group_wpa_s, res);
1632         } else {
1633                 wpa_s->p2p_in_provisioning = 1;
1634                 wpa_s->global->p2p_group_formation = wpa_s;
1635
1636                 if (res->role_go)
1637                         wpas_start_wps_go(wpa_s, res, 1);
1638                 else
1639                         wpas_start_wps_enrollee(ctx, res);
1640         }
1641
1642         wpa_s->p2p_long_listen = 0;
1643         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1644
1645         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1646         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1647                                (res->peer_config_timeout % 100) * 10000,
1648                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1649 }
1650
1651
1652 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1653 {
1654         struct wpa_supplicant *wpa_s = ctx;
1655         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1656                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1657
1658         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1659 }
1660
1661
1662 static void wpas_dev_found(void *ctx, const u8 *addr,
1663                            const struct p2p_peer_info *info,
1664                            int new_device)
1665 {
1666 #ifndef CONFIG_NO_STDOUT_DEBUG
1667         struct wpa_supplicant *wpa_s = ctx;
1668         char devtype[WPS_DEV_TYPE_BUFSIZE];
1669         char *wfd_dev_info_hex = NULL;
1670
1671 #ifdef CONFIG_WIFI_DISPLAY
1672         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1673                                                     WFD_SUBELEM_DEVICE_INFO);
1674 #endif /* CONFIG_WIFI_DISPLAY */
1675
1676         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1677                        " p2p_dev_addr=" MACSTR
1678                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1679                        "dev_capab=0x%x group_capab=0x%x%s%s",
1680                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1681                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1682                                             sizeof(devtype)),
1683                        info->device_name, info->config_methods,
1684                        info->dev_capab, info->group_capab,
1685                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1686                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1687 #endif /* CONFIG_NO_STDOUT_DEBUG */
1688
1689         os_free(wfd_dev_info_hex);
1690
1691         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1692 }
1693
1694
1695 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1696 {
1697         struct wpa_supplicant *wpa_s = ctx;
1698
1699         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1700                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1701
1702         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1703 }
1704
1705
1706 static void wpas_find_stopped(void *ctx)
1707 {
1708         struct wpa_supplicant *wpa_s = ctx;
1709         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1710 }
1711
1712
1713 struct wpas_p2p_listen_work {
1714         unsigned int freq;
1715         unsigned int duration;
1716         struct wpabuf *probe_resp_ie;
1717 };
1718
1719
1720 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1721 {
1722         if (lwork == NULL)
1723                 return;
1724         wpabuf_free(lwork->probe_resp_ie);
1725         os_free(lwork);
1726 }
1727
1728
1729 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1730 {
1731         struct wpas_p2p_listen_work *lwork;
1732
1733         if (!wpa_s->p2p_listen_work)
1734                 return;
1735
1736         lwork = wpa_s->p2p_listen_work->ctx;
1737         wpas_p2p_listen_work_free(lwork);
1738         radio_work_done(wpa_s->p2p_listen_work);
1739         wpa_s->p2p_listen_work = NULL;
1740 }
1741
1742
1743 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1744 {
1745         struct wpa_supplicant *wpa_s = work->wpa_s;
1746         struct wpas_p2p_listen_work *lwork = work->ctx;
1747
1748         if (deinit) {
1749                 wpas_p2p_listen_work_free(lwork);
1750                 return;
1751         }
1752
1753         wpa_s->p2p_listen_work = work;
1754
1755         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1756
1757         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1758                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1759                            "report received Probe Request frames");
1760                 wpas_p2p_listen_work_done(wpa_s);
1761                 return;
1762         }
1763
1764         wpa_s->pending_listen_freq = lwork->freq;
1765         wpa_s->pending_listen_duration = lwork->duration;
1766
1767         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1768         {
1769                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1770                            "to remain on channel (%u MHz) for Listen "
1771                            "state", lwork->freq);
1772                 wpas_p2p_listen_work_done(wpa_s);
1773                 wpa_s->pending_listen_freq = 0;
1774                 return;
1775         }
1776         wpa_s->off_channel_freq = 0;
1777         wpa_s->roc_waiting_drv_freq = lwork->freq;
1778 }
1779
1780
1781 static int wpas_start_listen(void *ctx, unsigned int freq,
1782                              unsigned int duration,
1783                              const struct wpabuf *probe_resp_ie)
1784 {
1785         struct wpa_supplicant *wpa_s = ctx;
1786         struct wpas_p2p_listen_work *lwork;
1787
1788         if (wpa_s->p2p_listen_work) {
1789                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1790                 return -1;
1791         }
1792
1793         lwork = os_zalloc(sizeof(*lwork));
1794         if (lwork == NULL)
1795                 return -1;
1796         lwork->freq = freq;
1797         lwork->duration = duration;
1798         if (probe_resp_ie) {
1799                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1800                 if (lwork->probe_resp_ie == NULL) {
1801                         wpas_p2p_listen_work_free(lwork);
1802                         return -1;
1803                 }
1804         }
1805
1806         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1807                            lwork) < 0) {
1808                 wpas_p2p_listen_work_free(lwork);
1809                 return -1;
1810         }
1811
1812         return 0;
1813 }
1814
1815
1816 static void wpas_stop_listen(void *ctx)
1817 {
1818         struct wpa_supplicant *wpa_s = ctx;
1819         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1820                 wpa_drv_cancel_remain_on_channel(wpa_s);
1821                 wpa_s->off_channel_freq = 0;
1822                 wpa_s->roc_waiting_drv_freq = 0;
1823         }
1824         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1825         wpa_drv_probe_req_report(wpa_s, 0);
1826         wpas_p2p_listen_work_done(wpa_s);
1827 }
1828
1829
1830 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1831 {
1832         struct wpa_supplicant *wpa_s = ctx;
1833         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1834 }
1835
1836
1837 /*
1838  * DNS Header section is used only to calculate compression pointers, so the
1839  * contents of this data does not matter, but the length needs to be reserved
1840  * in the virtual packet.
1841  */
1842 #define DNS_HEADER_LEN 12
1843
1844 /*
1845  * 27-octet in-memory packet from P2P specification containing two implied
1846  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1847  */
1848 #define P2P_SD_IN_MEMORY_LEN 27
1849
1850 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1851                                        u8 **spos, const u8 *end)
1852 {
1853         while (*spos < end) {
1854                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1855                 int len;
1856
1857                 if (val == 1 || val == 2) {
1858                         /* These are reserved values in RFC 1035 */
1859                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1860                                    "sequence starting with 0x%x", val);
1861                         return -1;
1862                 }
1863
1864                 if (val == 3) {
1865                         u16 offset;
1866                         u8 *spos_tmp;
1867
1868                         /* Offset */
1869                         if (*spos + 2 > end) {
1870                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1871                                            "DNS offset field");
1872                                 return -1;
1873                         }
1874
1875                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1876                         if (offset >= *spos - start) {
1877                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1878                                            "pointer offset %u", offset);
1879                                 return -1;
1880                         }
1881
1882                         (*spos) += 2;
1883                         spos_tmp = start + offset;
1884                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1885                                                            &spos_tmp,
1886                                                            *spos - 2);
1887                 }
1888
1889                 /* Label */
1890                 len = (*spos)[0] & 0x3f;
1891                 if (len == 0)
1892                         return 0;
1893
1894                 (*spos)++;
1895                 if (*spos + len > end) {
1896                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1897                                    "sequence - no room for label with length "
1898                                    "%u", len);
1899                         return -1;
1900                 }
1901
1902                 if (*upos + len + 2 > uend)
1903                         return -2;
1904
1905                 os_memcpy(*upos, *spos, len);
1906                 *spos += len;
1907                 *upos += len;
1908                 (*upos)[0] = '.';
1909                 (*upos)++;
1910                 (*upos)[0] = '\0';
1911         }
1912
1913         return 0;
1914 }
1915
1916
1917 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1918  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1919  * not large enough */
1920 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1921                                  size_t msg_len, size_t offset)
1922 {
1923         /* 27-octet in-memory packet from P2P specification */
1924         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1925                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1926         u8 *tmp, *end, *spos;
1927         char *upos, *uend;
1928         int ret = 0;
1929
1930         if (buf_len < 2)
1931                 return -1;
1932         if (offset > msg_len)
1933                 return -1;
1934
1935         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1936         if (tmp == NULL)
1937                 return -1;
1938         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1939         end = spos + msg_len;
1940         spos += offset;
1941
1942         os_memset(tmp, 0, DNS_HEADER_LEN);
1943         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1944         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1945
1946         upos = buf;
1947         uend = buf + buf_len;
1948
1949         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1950         if (ret) {
1951                 os_free(tmp);
1952                 return ret;
1953         }
1954
1955         if (upos == buf) {
1956                 upos[0] = '.';
1957                 upos[1] = '\0';
1958         } else if (upos[-1] == '.')
1959                 upos[-1] = '\0';
1960
1961         os_free(tmp);
1962         return 0;
1963 }
1964
1965
1966 static struct p2p_srv_bonjour *
1967 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1968                              const struct wpabuf *query)
1969 {
1970         struct p2p_srv_bonjour *bsrv;
1971         size_t len;
1972
1973         len = wpabuf_len(query);
1974         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1975                          struct p2p_srv_bonjour, list) {
1976                 if (len == wpabuf_len(bsrv->query) &&
1977                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1978                               len) == 0)
1979                         return bsrv;
1980         }
1981         return NULL;
1982 }
1983
1984
1985 static struct p2p_srv_upnp *
1986 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1987                           const char *service)
1988 {
1989         struct p2p_srv_upnp *usrv;
1990
1991         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1992                          struct p2p_srv_upnp, list) {
1993                 if (version == usrv->version &&
1994                     os_strcmp(service, usrv->service) == 0)
1995                         return usrv;
1996         }
1997         return NULL;
1998 }
1999
2000
2001 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2002                                         u8 srv_trans_id)
2003 {
2004         u8 *len_pos;
2005
2006         if (wpabuf_tailroom(resp) < 5)
2007                 return;
2008
2009         /* Length (to be filled) */
2010         len_pos = wpabuf_put(resp, 2);
2011         wpabuf_put_u8(resp, srv_proto);
2012         wpabuf_put_u8(resp, srv_trans_id);
2013         /* Status Code */
2014         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2015         /* Response Data: empty */
2016         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2017 }
2018
2019
2020 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2021                                 struct wpabuf *resp, u8 srv_trans_id)
2022 {
2023         struct p2p_srv_bonjour *bsrv;
2024         u8 *len_pos;
2025
2026         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2027
2028         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2029                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2030                 return;
2031         }
2032
2033         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2034                          struct p2p_srv_bonjour, list) {
2035                 if (wpabuf_tailroom(resp) <
2036                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2037                         return;
2038                 /* Length (to be filled) */
2039                 len_pos = wpabuf_put(resp, 2);
2040                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2041                 wpabuf_put_u8(resp, srv_trans_id);
2042                 /* Status Code */
2043                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2044                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2045                                   wpabuf_head(bsrv->resp),
2046                                   wpabuf_len(bsrv->resp));
2047                 /* Response Data */
2048                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2049                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2050                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2051                              2);
2052         }
2053 }
2054
2055
2056 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2057                                size_t query_len)
2058 {
2059         char str_rx[256], str_srv[256];
2060
2061         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2062                 return 0; /* Too short to include DNS Type and Version */
2063         if (os_memcmp(query + query_len - 3,
2064                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2065                       3) != 0)
2066                 return 0; /* Mismatch in DNS Type or Version */
2067         if (query_len == wpabuf_len(bsrv->query) &&
2068             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2069                 return 1; /* Binary match */
2070
2071         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2072                                   0))
2073                 return 0; /* Failed to uncompress query */
2074         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2075                                   wpabuf_head(bsrv->query),
2076                                   wpabuf_len(bsrv->query) - 3, 0))
2077                 return 0; /* Failed to uncompress service */
2078
2079         return os_strcmp(str_rx, str_srv) == 0;
2080 }
2081
2082
2083 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2084                                 struct wpabuf *resp, u8 srv_trans_id,
2085                                 const u8 *query, size_t query_len)
2086 {
2087         struct p2p_srv_bonjour *bsrv;
2088         u8 *len_pos;
2089         int matches = 0;
2090
2091         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2092                           query, query_len);
2093         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2094                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2095                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2096                                             srv_trans_id);
2097                 return;
2098         }
2099
2100         if (query_len == 0) {
2101                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2102                 return;
2103         }
2104
2105         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2106                          struct p2p_srv_bonjour, list) {
2107                 if (!match_bonjour_query(bsrv, query, query_len))
2108                         continue;
2109
2110                 if (wpabuf_tailroom(resp) <
2111                     5 + query_len + wpabuf_len(bsrv->resp))
2112                         return;
2113
2114                 matches++;
2115
2116                 /* Length (to be filled) */
2117                 len_pos = wpabuf_put(resp, 2);
2118                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2119                 wpabuf_put_u8(resp, srv_trans_id);
2120
2121                 /* Status Code */
2122                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2123                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2124                                   wpabuf_head(bsrv->resp),
2125                                   wpabuf_len(bsrv->resp));
2126
2127                 /* Response Data */
2128                 wpabuf_put_data(resp, query, query_len); /* Key */
2129                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2130
2131                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2132         }
2133
2134         if (matches == 0) {
2135                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2136                            "available");
2137                 if (wpabuf_tailroom(resp) < 5)
2138                         return;
2139
2140                 /* Length (to be filled) */
2141                 len_pos = wpabuf_put(resp, 2);
2142                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2143                 wpabuf_put_u8(resp, srv_trans_id);
2144
2145                 /* Status Code */
2146                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2147                 /* Response Data: empty */
2148                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2149                              2);
2150         }
2151 }
2152
2153
2154 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2155                              struct wpabuf *resp, u8 srv_trans_id)
2156 {
2157         struct p2p_srv_upnp *usrv;
2158         u8 *len_pos;
2159
2160         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2161
2162         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2163                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2164                 return;
2165         }
2166
2167         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2168                          struct p2p_srv_upnp, list) {
2169                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2170                         return;
2171
2172                 /* Length (to be filled) */
2173                 len_pos = wpabuf_put(resp, 2);
2174                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2175                 wpabuf_put_u8(resp, srv_trans_id);
2176
2177                 /* Status Code */
2178                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2179                 /* Response Data */
2180                 wpabuf_put_u8(resp, usrv->version);
2181                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2182                            usrv->service);
2183                 wpabuf_put_str(resp, usrv->service);
2184                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2185                              2);
2186         }
2187 }
2188
2189
2190 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2191                              struct wpabuf *resp, u8 srv_trans_id,
2192                              const u8 *query, size_t query_len)
2193 {
2194         struct p2p_srv_upnp *usrv;
2195         u8 *len_pos;
2196         u8 version;
2197         char *str;
2198         int count = 0;
2199
2200         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2201                           query, query_len);
2202
2203         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2204                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2205                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2206                                             srv_trans_id);
2207                 return;
2208         }
2209
2210         if (query_len == 0) {
2211                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2212                 return;
2213         }
2214
2215         if (wpabuf_tailroom(resp) < 5)
2216                 return;
2217
2218         /* Length (to be filled) */
2219         len_pos = wpabuf_put(resp, 2);
2220         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2221         wpabuf_put_u8(resp, srv_trans_id);
2222
2223         version = query[0];
2224         str = os_malloc(query_len);
2225         if (str == NULL)
2226                 return;
2227         os_memcpy(str, query + 1, query_len - 1);
2228         str[query_len - 1] = '\0';
2229
2230         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2231                          struct p2p_srv_upnp, list) {
2232                 if (version != usrv->version)
2233                         continue;
2234
2235                 if (os_strcmp(str, "ssdp:all") != 0 &&
2236                     os_strstr(usrv->service, str) == NULL)
2237                         continue;
2238
2239                 if (wpabuf_tailroom(resp) < 2)
2240                         break;
2241                 if (count == 0) {
2242                         /* Status Code */
2243                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2244                         /* Response Data */
2245                         wpabuf_put_u8(resp, version);
2246                 } else
2247                         wpabuf_put_u8(resp, ',');
2248
2249                 count++;
2250
2251                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2252                            usrv->service);
2253                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2254                         break;
2255                 wpabuf_put_str(resp, usrv->service);
2256         }
2257         os_free(str);
2258
2259         if (count == 0) {
2260                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2261                            "available");
2262                 /* Status Code */
2263                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2264                 /* Response Data: empty */
2265         }
2266
2267         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2268 }
2269
2270
2271 #ifdef CONFIG_WIFI_DISPLAY
2272 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2273                             struct wpabuf *resp, u8 srv_trans_id,
2274                             const u8 *query, size_t query_len)
2275 {
2276         const u8 *pos;
2277         u8 role;
2278         u8 *len_pos;
2279
2280         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2281
2282         if (!wpa_s->global->wifi_display) {
2283                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2284                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2285                                             srv_trans_id);
2286                 return;
2287         }
2288
2289         if (query_len < 1) {
2290                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2291                            "Role");
2292                 return;
2293         }
2294
2295         if (wpabuf_tailroom(resp) < 5)
2296                 return;
2297
2298         pos = query;
2299         role = *pos++;
2300         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2301
2302         /* TODO: role specific handling */
2303
2304         /* Length (to be filled) */
2305         len_pos = wpabuf_put(resp, 2);
2306         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2307         wpabuf_put_u8(resp, srv_trans_id);
2308         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2309
2310         while (pos < query + query_len) {
2311                 if (*pos < MAX_WFD_SUBELEMS &&
2312                     wpa_s->global->wfd_subelem[*pos] &&
2313                     wpabuf_tailroom(resp) >=
2314                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2315                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2316                                    "subelement %u", *pos);
2317                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2318                 }
2319                 pos++;
2320         }
2321
2322         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2323 }
2324 #endif /* CONFIG_WIFI_DISPLAY */
2325
2326
2327 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2328                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2329 {
2330         struct wpa_supplicant *wpa_s = ctx;
2331         const u8 *pos = tlvs;
2332         const u8 *end = tlvs + tlvs_len;
2333         const u8 *tlv_end;
2334         u16 slen;
2335         struct wpabuf *resp;
2336         u8 srv_proto, srv_trans_id;
2337         size_t buf_len;
2338         char *buf;
2339
2340         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2341                     tlvs, tlvs_len);
2342         buf_len = 2 * tlvs_len + 1;
2343         buf = os_malloc(buf_len);
2344         if (buf) {
2345                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2346                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2347                              MACSTR " %u %u %s",
2348                              freq, MAC2STR(sa), dialog_token, update_indic,
2349                              buf);
2350                 os_free(buf);
2351         }
2352
2353         if (wpa_s->p2p_sd_over_ctrl_iface) {
2354                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2355                                            update_indic, tlvs, tlvs_len);
2356                 return; /* to be processed by an external program */
2357         }
2358
2359         resp = wpabuf_alloc(10000);
2360         if (resp == NULL)
2361                 return;
2362
2363         while (pos + 1 < end) {
2364                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2365                 slen = WPA_GET_LE16(pos);
2366                 pos += 2;
2367                 if (pos + slen > end || slen < 2) {
2368                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2369                                    "length");
2370                         wpabuf_free(resp);
2371                         return;
2372                 }
2373                 tlv_end = pos + slen;
2374
2375                 srv_proto = *pos++;
2376                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2377                            srv_proto);
2378                 srv_trans_id = *pos++;
2379                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2380                            srv_trans_id);
2381
2382                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2383                             pos, tlv_end - pos);
2384
2385
2386                 if (wpa_s->force_long_sd) {
2387                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2388                                    "response");
2389                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2390                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2391                         goto done;
2392                 }
2393
2394                 switch (srv_proto) {
2395                 case P2P_SERV_ALL_SERVICES:
2396                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2397                                    "for all services");
2398                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2399                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2400                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2401                                            "discovery protocols available");
2402                                 wpas_sd_add_proto_not_avail(
2403                                         resp, P2P_SERV_ALL_SERVICES,
2404                                         srv_trans_id);
2405                                 break;
2406                         }
2407                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2408                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2409                         break;
2410                 case P2P_SERV_BONJOUR:
2411                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2412                                             pos, tlv_end - pos);
2413                         break;
2414                 case P2P_SERV_UPNP:
2415                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2416                                          pos, tlv_end - pos);
2417                         break;
2418 #ifdef CONFIG_WIFI_DISPLAY
2419                 case P2P_SERV_WIFI_DISPLAY:
2420                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2421                                         pos, tlv_end - pos);
2422                         break;
2423 #endif /* CONFIG_WIFI_DISPLAY */
2424                 default:
2425                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2426                                    "protocol %u", srv_proto);
2427                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2428                                                     srv_trans_id);
2429                         break;
2430                 }
2431
2432                 pos = tlv_end;
2433         }
2434
2435 done:
2436         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2437                                    update_indic, tlvs, tlvs_len);
2438
2439         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2440
2441         wpabuf_free(resp);
2442 }
2443
2444
2445 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2446                              const u8 *tlvs, size_t tlvs_len)
2447 {
2448         struct wpa_supplicant *wpa_s = ctx;
2449         const u8 *pos = tlvs;
2450         const u8 *end = tlvs + tlvs_len;
2451         const u8 *tlv_end;
2452         u16 slen;
2453         size_t buf_len;
2454         char *buf;
2455
2456         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2457                     tlvs, tlvs_len);
2458         if (tlvs_len > 1500) {
2459                 /* TODO: better way for handling this */
2460                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2461                              P2P_EVENT_SERV_DISC_RESP MACSTR
2462                              " %u <long response: %u bytes>",
2463                              MAC2STR(sa), update_indic,
2464                              (unsigned int) tlvs_len);
2465         } else {
2466                 buf_len = 2 * tlvs_len + 1;
2467                 buf = os_malloc(buf_len);
2468                 if (buf) {
2469                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2470                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2471                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2472                                      MAC2STR(sa), update_indic, buf);
2473                         os_free(buf);
2474                 }
2475         }
2476
2477         while (pos < end) {
2478                 u8 srv_proto, srv_trans_id, status;
2479
2480                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2481                 slen = WPA_GET_LE16(pos);
2482                 pos += 2;
2483                 if (pos + slen > end || slen < 3) {
2484                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2485                                    "length");
2486                         return;
2487                 }
2488                 tlv_end = pos + slen;
2489
2490                 srv_proto = *pos++;
2491                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2492                            srv_proto);
2493                 srv_trans_id = *pos++;
2494                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2495                            srv_trans_id);
2496                 status = *pos++;
2497                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2498                            status);
2499
2500                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2501                             pos, tlv_end - pos);
2502
2503                 pos = tlv_end;
2504         }
2505
2506         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2507 }
2508
2509
2510 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2511                         const struct wpabuf *tlvs)
2512 {
2513         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2514                 return 0;
2515         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2516 }
2517
2518
2519 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2520                              u8 version, const char *query)
2521 {
2522         struct wpabuf *tlvs;
2523         u64 ret;
2524
2525         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2526         if (tlvs == NULL)
2527                 return 0;
2528         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2529         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2530         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2531         wpabuf_put_u8(tlvs, version);
2532         wpabuf_put_str(tlvs, query);
2533         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2534         wpabuf_free(tlvs);
2535         return ret;
2536 }
2537
2538
2539 #ifdef CONFIG_WIFI_DISPLAY
2540
2541 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2542                                    const struct wpabuf *tlvs)
2543 {
2544         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2545                 return 0;
2546         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2547 }
2548
2549
2550 #define MAX_WFD_SD_SUBELEMS 20
2551
2552 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2553                                 const char *subelems)
2554 {
2555         u8 *len;
2556         const char *pos;
2557         int val;
2558         int count = 0;
2559
2560         len = wpabuf_put(tlvs, 2);
2561         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2562         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2563
2564         wpabuf_put_u8(tlvs, role);
2565
2566         pos = subelems;
2567         while (*pos) {
2568                 val = atoi(pos);
2569                 if (val >= 0 && val < 256) {
2570                         wpabuf_put_u8(tlvs, val);
2571                         count++;
2572                         if (count == MAX_WFD_SD_SUBELEMS)
2573                                 break;
2574                 }
2575                 pos = os_strchr(pos + 1, ',');
2576                 if (pos == NULL)
2577                         break;
2578                 pos++;
2579         }
2580
2581         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2582 }
2583
2584
2585 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2586                                      const u8 *dst, const char *role)
2587 {
2588         struct wpabuf *tlvs;
2589         u64 ret;
2590         const char *subelems;
2591         u8 id = 1;
2592
2593         subelems = os_strchr(role, ' ');
2594         if (subelems == NULL)
2595                 return 0;
2596         subelems++;
2597
2598         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2599         if (tlvs == NULL)
2600                 return 0;
2601
2602         if (os_strstr(role, "[source]"))
2603                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2604         if (os_strstr(role, "[pri-sink]"))
2605                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2606         if (os_strstr(role, "[sec-sink]"))
2607                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2608         if (os_strstr(role, "[source+sink]"))
2609                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2610
2611         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2612         wpabuf_free(tlvs);
2613         return ret;
2614 }
2615
2616 #endif /* CONFIG_WIFI_DISPLAY */
2617
2618
2619 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2620 {
2621         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2622                 return -1;
2623         return p2p_sd_cancel_request(wpa_s->global->p2p,
2624                                      (void *) (uintptr_t) req);
2625 }
2626
2627
2628 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2629                           const u8 *dst, u8 dialog_token,
2630                           const struct wpabuf *resp_tlvs)
2631 {
2632         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2633                 return;
2634         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2635                         resp_tlvs);
2636 }
2637
2638
2639 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2640 {
2641         if (wpa_s->global->p2p)
2642                 p2p_sd_service_update(wpa_s->global->p2p);
2643 }
2644
2645
2646 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2647 {
2648         dl_list_del(&bsrv->list);
2649         wpabuf_free(bsrv->query);
2650         wpabuf_free(bsrv->resp);
2651         os_free(bsrv);
2652 }
2653
2654
2655 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2656 {
2657         dl_list_del(&usrv->list);
2658         os_free(usrv->service);
2659         os_free(usrv);
2660 }
2661
2662
2663 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2664 {
2665         struct p2p_srv_bonjour *bsrv, *bn;
2666         struct p2p_srv_upnp *usrv, *un;
2667
2668         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2669                               struct p2p_srv_bonjour, list)
2670                 wpas_p2p_srv_bonjour_free(bsrv);
2671
2672         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2673                               struct p2p_srv_upnp, list)
2674                 wpas_p2p_srv_upnp_free(usrv);
2675
2676         wpas_p2p_sd_service_update(wpa_s);
2677 }
2678
2679
2680 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2681                                  struct wpabuf *query, struct wpabuf *resp)
2682 {
2683         struct p2p_srv_bonjour *bsrv;
2684
2685         bsrv = os_zalloc(sizeof(*bsrv));
2686         if (bsrv == NULL)
2687                 return -1;
2688         bsrv->query = query;
2689         bsrv->resp = resp;
2690         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2691
2692         wpas_p2p_sd_service_update(wpa_s);
2693         return 0;
2694 }
2695
2696
2697 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2698                                  const struct wpabuf *query)
2699 {
2700         struct p2p_srv_bonjour *bsrv;
2701
2702         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2703         if (bsrv == NULL)
2704                 return -1;
2705         wpas_p2p_srv_bonjour_free(bsrv);
2706         wpas_p2p_sd_service_update(wpa_s);
2707         return 0;
2708 }
2709
2710
2711 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2712                               const char *service)
2713 {
2714         struct p2p_srv_upnp *usrv;
2715
2716         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2717                 return 0; /* Already listed */
2718         usrv = os_zalloc(sizeof(*usrv));
2719         if (usrv == NULL)
2720                 return -1;
2721         usrv->version = version;
2722         usrv->service = os_strdup(service);
2723         if (usrv->service == NULL) {
2724                 os_free(usrv);
2725                 return -1;
2726         }
2727         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2728
2729         wpas_p2p_sd_service_update(wpa_s);
2730         return 0;
2731 }
2732
2733
2734 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2735                               const char *service)
2736 {
2737         struct p2p_srv_upnp *usrv;
2738
2739         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2740         if (usrv == NULL)
2741                 return -1;
2742         wpas_p2p_srv_upnp_free(usrv);
2743         wpas_p2p_sd_service_update(wpa_s);
2744         return 0;
2745 }
2746
2747
2748 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2749                                          const u8 *peer, const char *params,
2750                                          unsigned int generated_pin)
2751 {
2752         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2753                        " %08d%s", MAC2STR(peer), generated_pin, params);
2754 }
2755
2756
2757 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2758                                         const u8 *peer, const char *params)
2759 {
2760         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2761                        "%s", MAC2STR(peer), params);
2762 }
2763
2764
2765 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2766                                const u8 *dev_addr, const u8 *pri_dev_type,
2767                                const char *dev_name, u16 supp_config_methods,
2768                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2769                                size_t group_id_len)
2770 {
2771         struct wpa_supplicant *wpa_s = ctx;
2772         char devtype[WPS_DEV_TYPE_BUFSIZE];
2773         char params[300];
2774         u8 empty_dev_type[8];
2775         unsigned int generated_pin = 0;
2776         struct wpa_supplicant *group = NULL;
2777
2778         if (group_id) {
2779                 for (group = wpa_s->global->ifaces; group; group = group->next)
2780                 {
2781                         struct wpa_ssid *s = group->current_ssid;
2782                         if (s != NULL &&
2783                             s->mode == WPAS_MODE_P2P_GO &&
2784                             group_id_len - ETH_ALEN == s->ssid_len &&
2785                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2786                                       s->ssid_len) == 0)
2787                                 break;
2788                 }
2789         }
2790
2791         if (pri_dev_type == NULL) {
2792                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2793                 pri_dev_type = empty_dev_type;
2794         }
2795         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2796                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2797                     "dev_capab=0x%x group_capab=0x%x%s%s",
2798                     MAC2STR(dev_addr),
2799                     wps_dev_type_bin2str(pri_dev_type, devtype,
2800                                          sizeof(devtype)),
2801                     dev_name, supp_config_methods, dev_capab, group_capab,
2802                     group ? " group=" : "",
2803                     group ? group->ifname : "");
2804         params[sizeof(params) - 1] = '\0';
2805
2806         if (config_methods & WPS_CONFIG_DISPLAY) {
2807                 generated_pin = wps_generate_pin();
2808                 wpas_prov_disc_local_display(wpa_s, peer, params,
2809                                              generated_pin);
2810         } else if (config_methods & WPS_CONFIG_KEYPAD)
2811                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2812         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2813                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2814                                MACSTR "%s", MAC2STR(peer), params);
2815
2816         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2817                                             P2P_PROV_DISC_SUCCESS,
2818                                             config_methods, generated_pin);
2819 }
2820
2821
2822 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2823 {
2824         struct wpa_supplicant *wpa_s = ctx;
2825         unsigned int generated_pin = 0;
2826         char params[20];
2827
2828         if (wpa_s->pending_pd_before_join &&
2829             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2830              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2831                 wpa_s->pending_pd_before_join = 0;
2832                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2833                            "join-existing-group operation");
2834                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2835                 return;
2836         }
2837
2838         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2839             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2840                 os_snprintf(params, sizeof(params), " peer_go=%d",
2841                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2842         else
2843                 params[0] = '\0';
2844
2845         if (config_methods & WPS_CONFIG_DISPLAY)
2846                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2847         else if (config_methods & WPS_CONFIG_KEYPAD) {
2848                 generated_pin = wps_generate_pin();
2849                 wpas_prov_disc_local_display(wpa_s, peer, params,
2850                                              generated_pin);
2851         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2852                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2853                                MACSTR "%s", MAC2STR(peer), params);
2854
2855         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2856                                             P2P_PROV_DISC_SUCCESS,
2857                                             config_methods, generated_pin);
2858 }
2859
2860
2861 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2862                                 enum p2p_prov_disc_status status)
2863 {
2864         struct wpa_supplicant *wpa_s = ctx;
2865
2866         if (wpa_s->p2p_fallback_to_go_neg) {
2867                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2868                         "failed - fall back to GO Negotiation");
2869                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2870                 return;
2871         }
2872
2873         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2874                 wpa_s->pending_pd_before_join = 0;
2875                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2876                            "join-existing-group operation (no ACK for PD "
2877                            "Req attempts)");
2878                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2879                 return;
2880         }
2881
2882         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2883                        " p2p_dev_addr=" MACSTR " status=%d",
2884                        MAC2STR(peer), status);
2885
2886         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2887                                             status, 0, 0);
2888 }
2889
2890
2891 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2892 {
2893         if (channels == NULL)
2894                 return 1; /* Assume no restrictions */
2895         return p2p_channels_includes_freq(channels, freq);
2896
2897 }
2898
2899
2900 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2901                                   const u8 *go_dev_addr, const u8 *ssid,
2902                                   size_t ssid_len, int *go, u8 *group_bssid,
2903                                   int *force_freq, int persistent_group,
2904                                   const struct p2p_channels *channels,
2905                                   int dev_pw_id)
2906 {
2907         struct wpa_supplicant *wpa_s = ctx;
2908         struct wpa_ssid *s;
2909         int res;
2910         struct wpa_supplicant *grp;
2911
2912         if (!persistent_group) {
2913                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2914                            " to join an active group (SSID: %s)",
2915                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2916                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2917                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2918                      == 0 ||
2919                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2920                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2921                                    "authorized invitation");
2922                         goto accept_inv;
2923                 }
2924
2925 #ifdef CONFIG_WPS_NFC
2926                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
2927                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
2928                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2929                         wpa_s->parent->p2p_wps_method = WPS_NFC;
2930                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
2931                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
2932                                   go_dev_addr, ETH_ALEN);
2933                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
2934                                   bssid, ETH_ALEN);
2935                         goto accept_inv;
2936                 }
2937 #endif /* CONFIG_WPS_NFC */
2938
2939                 /*
2940                  * Do not accept the invitation automatically; notify user and
2941                  * request approval.
2942                  */
2943                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2944         }
2945
2946         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2947         if (grp) {
2948                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2949                            "running persistent group");
2950                 if (*go)
2951                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2952                 goto accept_inv;
2953         }
2954
2955         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2956             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2957                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2958                            "invitation to re-invoke a persistent group");
2959         } else if (!wpa_s->conf->persistent_reconnect)
2960                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2961
2962         for (s = wpa_s->conf->ssid; s; s = s->next) {
2963                 if (s->disabled == 2 &&
2964                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2965                     s->ssid_len == ssid_len &&
2966                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2967                         break;
2968         }
2969
2970         if (!s) {
2971                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2972                            " requested reinvocation of an unknown group",
2973                            MAC2STR(sa));
2974                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2975         }
2976
2977         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2978                 *go = 1;
2979                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2980                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2981                                    "interface is already in use - reject "
2982                                    "invitation");
2983                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2984                 }
2985                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2986         } else if (s->mode == WPAS_MODE_P2P_GO) {
2987                 *go = 1;
2988                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2989                 {
2990                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2991                                    "interface address for the group");
2992                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2993                 }
2994                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2995                           ETH_ALEN);
2996         }
2997
2998 accept_inv:
2999         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3000
3001         /* Get one of the frequencies currently in use */
3002         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
3003                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3004                 wpas_p2p_set_own_freq_preference(wpa_s, res);
3005
3006                 if (wpa_s->num_multichan_concurrent < 2 ||
3007                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3008                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3009                         *force_freq = res;
3010                 }
3011         }
3012
3013         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3014             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3015                 if (*go == 0) {
3016                         /* We are the client */
3017                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3018                                    "running a GO but we are capable of MCC, "
3019                                    "figure out the best channel to use");
3020                         *force_freq = 0;
3021                 } else if (!freq_included(channels, *force_freq)) {
3022                         /* We are the GO, and *force_freq is not in the
3023                          * intersection */
3024                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3025                                    "in intersection but we are capable of MCC, "
3026                                    "figure out the best channel to use",
3027                                    *force_freq);
3028                         *force_freq = 0;
3029                 }
3030         }
3031
3032         return P2P_SC_SUCCESS;
3033 }
3034
3035
3036 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3037                                      const u8 *ssid, size_t ssid_len,
3038                                      const u8 *go_dev_addr, u8 status,
3039                                      int op_freq)
3040 {
3041         struct wpa_supplicant *wpa_s = ctx;
3042         struct wpa_ssid *s;
3043
3044         for (s = wpa_s->conf->ssid; s; s = s->next) {
3045                 if (s->disabled == 2 &&
3046                     s->ssid_len == ssid_len &&
3047                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3048                         break;
3049         }
3050
3051         if (status == P2P_SC_SUCCESS) {
3052                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3053                            " was accepted; op_freq=%d MHz, SSID=%s",
3054                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3055                 if (s) {
3056                         int go = s->mode == WPAS_MODE_P2P_GO;
3057                         wpas_p2p_group_add_persistent(
3058                                 wpa_s, s, go, go ? op_freq : 0, 0, 0, NULL,
3059                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3060                 } else if (bssid) {
3061                         wpa_s->user_initiated_pd = 0;
3062                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3063                                       wpa_s->p2p_wps_method, 0, op_freq,
3064                                       ssid, ssid_len);
3065                 }
3066                 return;
3067         }
3068
3069         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3070                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3071                            " was rejected (status %u)", MAC2STR(sa), status);
3072                 return;
3073         }
3074
3075         if (!s) {
3076                 if (bssid) {
3077                         wpa_msg_global(wpa_s, MSG_INFO,
3078                                        P2P_EVENT_INVITATION_RECEIVED
3079                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3080                                        " bssid=" MACSTR " unknown-network",
3081                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3082                                        MAC2STR(bssid));
3083                 } else {
3084                         wpa_msg_global(wpa_s, MSG_INFO,
3085                                        P2P_EVENT_INVITATION_RECEIVED
3086                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3087                                        " unknown-network",
3088                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3089                 }
3090                 return;
3091         }
3092
3093         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3094                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3095                                "sa=" MACSTR " persistent=%d freq=%d",
3096                                MAC2STR(sa), s->id, op_freq);
3097         } else {
3098                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3099                                "sa=" MACSTR " persistent=%d",
3100                                MAC2STR(sa), s->id);
3101         }
3102 }
3103
3104
3105 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3106                                         struct wpa_ssid *ssid,
3107                                         const u8 *peer, int inv)
3108 {
3109         size_t i;
3110
3111         if (ssid == NULL)
3112                 return;
3113
3114         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3115                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3116                               ETH_ALEN) == 0)
3117                         break;
3118         }
3119         if (i >= ssid->num_p2p_clients) {
3120                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3121                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3122                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3123                                    "due to invitation result", ssid->id);
3124                         wpas_notify_network_removed(wpa_s, ssid);
3125                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3126                         return;
3127                 }
3128                 return; /* Peer not found in client list */
3129         }
3130
3131         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3132                    "group %d client list%s",
3133                    MAC2STR(peer), ssid->id,
3134                    inv ? " due to invitation result" : "");
3135         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3136                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3137                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3138         ssid->num_p2p_clients--;
3139 #ifndef CONFIG_NO_CONFIG_WRITE
3140         if (wpa_s->parent->conf->update_config &&
3141             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3142                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3143 #endif /* CONFIG_NO_CONFIG_WRITE */
3144 }
3145
3146
3147 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3148                                           const u8 *peer)
3149 {
3150         struct wpa_ssid *ssid;
3151
3152         wpa_s = wpa_s->global->p2p_invite_group;
3153         if (wpa_s == NULL)
3154                 return; /* No known invitation group */
3155         ssid = wpa_s->current_ssid;
3156         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3157             !ssid->p2p_persistent_group)
3158                 return; /* Not operating as a GO in persistent group */
3159         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3160                                        ssid->ssid, ssid->ssid_len);
3161         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3162 }
3163
3164
3165 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3166                                    const struct p2p_channels *channels,
3167                                    const u8 *peer, int neg_freq)
3168 {
3169         struct wpa_supplicant *wpa_s = ctx;
3170         struct wpa_ssid *ssid;
3171         int freq;
3172
3173         if (bssid) {
3174                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3175                                "status=%d " MACSTR,
3176                                status, MAC2STR(bssid));
3177         } else {
3178                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3179                                "status=%d ", status);
3180         }
3181         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3182
3183         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3184                    status, MAC2STR(peer));
3185         if (wpa_s->pending_invite_ssid_id == -1) {
3186                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3187                         wpas_remove_persistent_client(wpa_s, peer);
3188                 return; /* Invitation to active group */
3189         }
3190
3191         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3192                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3193                            "invitation exchange to indicate readiness for "
3194                            "re-invocation");
3195         }
3196
3197         if (status != P2P_SC_SUCCESS) {
3198                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3199                         ssid = wpa_config_get_network(
3200                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3201                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3202                 }
3203                 wpas_p2p_remove_pending_group_interface(wpa_s);
3204                 return;
3205         }
3206
3207         ssid = wpa_config_get_network(wpa_s->conf,
3208                                       wpa_s->pending_invite_ssid_id);
3209         if (ssid == NULL) {
3210                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3211                            "data matching with invitation");
3212                 return;
3213         }
3214
3215         /*
3216          * The peer could have missed our ctrl::ack frame for Invitation
3217          * Response and continue retransmitting the frame. To reduce the
3218          * likelihood of the peer not getting successful TX status for the
3219          * Invitation Response frame, wait a short time here before starting
3220          * the persistent group so that we will remain on the current channel to
3221          * acknowledge any possible retransmission from the peer.
3222          */
3223         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3224                 "starting persistent group");
3225         os_sleep(0, 50000);
3226
3227         freq = wpa_s->p2p_persistent_go_freq;
3228         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3229             freq_included(channels, neg_freq)) {
3230                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use frequence %d MHz from invitation for GO mode",
3231                         neg_freq);
3232                 freq = neg_freq;
3233         }
3234
3235         wpas_p2p_group_add_persistent(wpa_s, ssid,
3236                                       ssid->mode == WPAS_MODE_P2P_GO,
3237                                       freq,
3238                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3239                                       channels,
3240                                       ssid->mode == WPAS_MODE_P2P_GO ?
3241                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3242                                       0);
3243 }
3244
3245
3246 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3247                                     unsigned int freq)
3248 {
3249         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3250                 return 1;
3251         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3252 }
3253
3254
3255 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3256 {
3257         reg->channel[reg->channels] = chan;
3258         reg->channels++;
3259 }
3260
3261
3262 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3263                                      struct p2p_channels *chan,
3264                                      struct p2p_channels *cli_chan)
3265 {
3266         int i, cla = 0;
3267
3268         os_memset(cli_chan, 0, sizeof(*cli_chan));
3269
3270         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3271                    "band");
3272
3273         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3274         chan->reg_class[cla].reg_class = 81;
3275         chan->reg_class[cla].channels = 0;
3276         for (i = 0; i < 11; i++) {
3277                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3278                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3279         }
3280         if (chan->reg_class[cla].channels)
3281                 cla++;
3282
3283         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3284                    "band");
3285
3286         /* Operating class 115 - 5 GHz, channels 36-48 */
3287         chan->reg_class[cla].reg_class = 115;
3288         chan->reg_class[cla].channels = 0;
3289         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3290                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3291         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3292                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3293         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3294                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3295         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3296                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3297         if (chan->reg_class[cla].channels)
3298                 cla++;
3299
3300         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3301                    "band");
3302
3303         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3304         chan->reg_class[cla].reg_class = 124;
3305         chan->reg_class[cla].channels = 0;
3306         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3307                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3308         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3309                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3312         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3313                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3314         if (chan->reg_class[cla].channels)
3315                 cla++;
3316
3317         chan->reg_classes = cla;
3318         return 0;
3319 }
3320
3321
3322 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3323                                           u16 num_modes,
3324                                           enum hostapd_hw_mode mode)
3325 {
3326         u16 i;
3327
3328         for (i = 0; i < num_modes; i++) {
3329                 if (modes[i].mode == mode)
3330                         return &modes[i];
3331         }
3332
3333         return NULL;
3334 }
3335
3336
3337 enum chan_allowed {
3338         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3339 };
3340
3341 static int has_channel(struct wpa_global *global,
3342                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3343 {
3344         int i;
3345         unsigned int freq;
3346
3347         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3348                 chan * 5;
3349         if (wpas_p2p_disallowed_freq(global, freq))
3350                 return NOT_ALLOWED;
3351
3352         for (i = 0; i < mode->num_channels; i++) {
3353                 if (mode->channels[i].chan == chan) {
3354                         if (flags)
3355                                 *flags = mode->channels[i].flag;
3356                         if (mode->channels[i].flag &
3357                             (HOSTAPD_CHAN_DISABLED |
3358                              HOSTAPD_CHAN_RADAR))
3359                                 return NOT_ALLOWED;
3360                         if (mode->channels[i].flag &
3361                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3362                              HOSTAPD_CHAN_NO_IBSS))
3363                                 return PASSIVE_ONLY;
3364                         return ALLOWED;
3365                 }
3366         }
3367
3368         return NOT_ALLOWED;
3369 }
3370
3371
3372 struct p2p_oper_class_map {
3373         enum hostapd_hw_mode mode;
3374         u8 op_class;
3375         u8 min_chan;
3376         u8 max_chan;
3377         u8 inc;
3378         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3379 };
3380
3381 static struct p2p_oper_class_map op_class[] = {
3382         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3383 #if 0 /* Do not enable HT40 on 2 GHz for now */
3384         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3385         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3386 #endif
3387         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3388         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3389         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3390         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3391         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3392         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3393
3394         /*
3395          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3396          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3397          * 80 MHz, but currently use the following definition for simplicity
3398          * (these center frequencies are not actual channels, which makes
3399          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3400          * removing invalid channels.
3401          */
3402         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3403         { -1, 0, 0, 0, 0, BW20 }
3404 };
3405
3406
3407 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3408                                      struct hostapd_hw_modes *mode,
3409                                      u8 channel)
3410 {
3411         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3412         unsigned int i;
3413
3414         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3415                 return 0;
3416
3417         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3418                 /*
3419                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3420                  * so the center channel is 6 channels away from the start/end.
3421                  */
3422                 if (channel >= center_channels[i] - 6 &&
3423                     channel <= center_channels[i] + 6)
3424                         return center_channels[i];
3425
3426         return 0;
3427 }
3428
3429
3430 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3431                                                struct hostapd_hw_modes *mode,
3432                                                u8 channel, u8 bw)
3433 {
3434         u8 center_chan;
3435         int i, flags;
3436         enum chan_allowed res, ret = ALLOWED;
3437
3438         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3439         if (!center_chan)
3440                 return NOT_ALLOWED;
3441         if (center_chan >= 58 && center_chan <= 138)
3442                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3443
3444         /* check all the channels are available */
3445         for (i = 0; i < 4; i++) {
3446                 int adj_chan = center_chan - 6 + i * 4;
3447
3448                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3449                 if (res == NOT_ALLOWED)
3450                         return NOT_ALLOWED;
3451                 if (res == PASSIVE_ONLY)
3452                         ret = PASSIVE_ONLY;
3453
3454                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3455                         return NOT_ALLOWED;
3456                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3457                         return NOT_ALLOWED;
3458                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3459                         return NOT_ALLOWED;
3460                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3461                         return NOT_ALLOWED;
3462         }
3463
3464         return ret;
3465 }
3466
3467
3468 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3469                                                  struct hostapd_hw_modes *mode,
3470                                                  u8 channel, u8 bw)
3471 {
3472         int flag;
3473         enum chan_allowed res, res2;
3474
3475         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3476         if (bw == BW40MINUS) {
3477                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3478                         return NOT_ALLOWED;
3479                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3480         } else if (bw == BW40PLUS) {
3481                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3482                         return NOT_ALLOWED;
3483                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3484         } else if (bw == BW80) {
3485                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3486         }
3487
3488         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3489                 return NOT_ALLOWED;
3490         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3491                 return PASSIVE_ONLY;
3492         return res;
3493 }
3494
3495
3496 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3497                                    struct p2p_channels *chan,
3498                                    struct p2p_channels *cli_chan)
3499 {
3500         struct hostapd_hw_modes *mode;
3501         int cla, op, cli_cla;
3502
3503         if (wpa_s->hw.modes == NULL) {
3504                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3505                            "of all supported channels; assume dualband "
3506                            "support");
3507                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3508         }
3509
3510         cla = cli_cla = 0;
3511
3512         for (op = 0; op_class[op].op_class; op++) {
3513                 struct p2p_oper_class_map *o = &op_class[op];
3514                 u8 ch;
3515                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3516
3517                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3518                 if (mode == NULL)
3519                         continue;
3520                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3521                         enum chan_allowed res;
3522                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3523                         if (res == ALLOWED) {
3524                                 if (reg == NULL) {
3525                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3526                                                    o->op_class);
3527                                         reg = &chan->reg_class[cla];
3528                                         cla++;
3529                                         reg->reg_class = o->op_class;
3530                                 }
3531                                 reg->channel[reg->channels] = ch;
3532                                 reg->channels++;
3533                         } else if (res == PASSIVE_ONLY &&
3534                                    wpa_s->conf->p2p_add_cli_chan) {
3535                                 if (cli_reg == NULL) {
3536                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3537                                                    o->op_class);
3538                                         cli_reg = &cli_chan->reg_class[cli_cla];
3539                                         cli_cla++;
3540                                         cli_reg->reg_class = o->op_class;
3541                                 }
3542                                 cli_reg->channel[cli_reg->channels] = ch;
3543                                 cli_reg->channels++;
3544                         }
3545                 }
3546                 if (reg) {
3547                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3548                                     reg->channel, reg->channels);
3549                 }
3550                 if (cli_reg) {
3551                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3552                                     cli_reg->channel, cli_reg->channels);
3553                 }
3554         }
3555
3556         chan->reg_classes = cla;
3557         cli_chan->reg_classes = cli_cla;
3558
3559         return 0;
3560 }
3561
3562
3563 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3564                            struct hostapd_hw_modes *mode, u8 channel)
3565 {
3566         int op;
3567         enum chan_allowed ret;
3568
3569         for (op = 0; op_class[op].op_class; op++) {
3570                 struct p2p_oper_class_map *o = &op_class[op];
3571                 u8 ch;
3572
3573                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3574                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3575                             o->bw == BW20 || ch != channel)
3576                                 continue;
3577                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3578                         if (ret == ALLOWED)
3579                                 return (o->bw == BW40MINUS) ? -1 : 1;
3580                 }
3581         }
3582         return 0;
3583 }
3584
3585
3586 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3587                               struct hostapd_hw_modes *mode, u8 channel)
3588 {
3589         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3590                 return 0;
3591
3592         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3593 }
3594
3595
3596 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3597                         size_t buf_len)
3598 {
3599         struct wpa_supplicant *wpa_s = ctx;
3600
3601         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3602                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3603                         break;
3604         }
3605         if (wpa_s == NULL)
3606                 return -1;
3607
3608         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3609 }
3610
3611
3612 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3613 {
3614         struct wpa_supplicant *wpa_s = ctx;
3615
3616         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3617                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3618                 if (ssid == NULL)
3619                         continue;
3620                 if (ssid->mode != WPAS_MODE_INFRA)
3621                         continue;
3622                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3623                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3624                         continue;
3625                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3626                         return 1;
3627         }
3628
3629         return 0;
3630 }
3631
3632
3633 static int wpas_is_concurrent_session_active(void *ctx)
3634 {
3635         struct wpa_supplicant *wpa_s = ctx;
3636         struct wpa_supplicant *ifs;
3637
3638         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3639                 if (ifs == wpa_s)
3640                         continue;
3641                 if (ifs->wpa_state > WPA_ASSOCIATED)
3642                         return 1;
3643         }
3644         return 0;
3645 }
3646
3647
3648 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3649 {
3650         struct wpa_supplicant *wpa_s = ctx;
3651         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3652 }
3653
3654
3655 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3656 {
3657         struct wpa_interface iface;
3658         struct wpa_supplicant *p2pdev_wpa_s;
3659         char ifname[100];
3660         char force_name[100];
3661         int ret;
3662
3663         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3664                     wpa_s->ifname);
3665         force_name[0] = '\0';
3666         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3667         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3668                              force_name, wpa_s->pending_interface_addr, NULL);
3669         if (ret < 0) {
3670                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3671                 return ret;
3672         }
3673         os_strlcpy(wpa_s->pending_interface_name, ifname,
3674                    sizeof(wpa_s->pending_interface_name));
3675
3676         os_memset(&iface, 0, sizeof(iface));
3677         iface.p2p_mgmt = 1;
3678         iface.ifname = wpa_s->pending_interface_name;
3679         iface.driver = wpa_s->driver->name;
3680         iface.driver_param = wpa_s->conf->driver_param;
3681         iface.confname = wpa_s->confname;
3682         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3683         if (!p2pdev_wpa_s) {
3684                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3685                 return -1;
3686         }
3687         p2pdev_wpa_s->parent = wpa_s;
3688
3689         wpa_s->pending_interface_name[0] = '\0';
3690         return 0;
3691 }
3692
3693
3694 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3695                                const u8 *noa, size_t noa_len)
3696 {
3697         struct wpa_supplicant *wpa_s, *intf = ctx;
3698         char hex[100];
3699
3700         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3701                 if (wpa_s->waiting_presence_resp)
3702                         break;
3703         }
3704         if (!wpa_s) {
3705                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3706                 return;
3707         }
3708         wpa_s->waiting_presence_resp = 0;
3709
3710         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3711         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3712                 " status=%u noa=%s", MAC2STR(src), status, hex);
3713 }
3714
3715
3716 /**
3717  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3718  * @global: Pointer to global data from wpa_supplicant_init()
3719  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3720  * Returns: 0 on success, -1 on failure
3721  */
3722 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3723 {
3724         struct p2p_config p2p;
3725         unsigned int r;
3726         int i;
3727
3728         if (wpa_s->conf->p2p_disabled)
3729                 return 0;
3730
3731         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3732                 return 0;
3733
3734         if (global->p2p)
3735                 return 0;
3736
3737         os_memset(&p2p, 0, sizeof(p2p));
3738         p2p.cb_ctx = wpa_s;
3739         p2p.debug_print = wpas_p2p_debug_print;
3740         p2p.p2p_scan = wpas_p2p_scan;
3741         p2p.send_action = wpas_send_action;
3742         p2p.send_action_done = wpas_send_action_done;
3743         p2p.go_neg_completed = wpas_go_neg_completed;
3744         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3745         p2p.dev_found = wpas_dev_found;
3746         p2p.dev_lost = wpas_dev_lost;
3747         p2p.find_stopped = wpas_find_stopped;
3748         p2p.start_listen = wpas_start_listen;
3749         p2p.stop_listen = wpas_stop_listen;
3750         p2p.send_probe_resp = wpas_send_probe_resp;
3751         p2p.sd_request = wpas_sd_request;
3752         p2p.sd_response = wpas_sd_response;
3753         p2p.prov_disc_req = wpas_prov_disc_req;
3754         p2p.prov_disc_resp = wpas_prov_disc_resp;
3755         p2p.prov_disc_fail = wpas_prov_disc_fail;
3756         p2p.invitation_process = wpas_invitation_process;
3757         p2p.invitation_received = wpas_invitation_received;
3758         p2p.invitation_result = wpas_invitation_result;
3759         p2p.get_noa = wpas_get_noa;
3760         p2p.go_connected = wpas_go_connected;
3761         p2p.presence_resp = wpas_presence_resp;
3762         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3763
3764         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3765         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3766         p2p.dev_name = wpa_s->conf->device_name;
3767         p2p.manufacturer = wpa_s->conf->manufacturer;
3768         p2p.model_name = wpa_s->conf->model_name;
3769         p2p.model_number = wpa_s->conf->model_number;
3770         p2p.serial_number = wpa_s->conf->serial_number;
3771         if (wpa_s->wps) {
3772                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3773                 p2p.config_methods = wpa_s->wps->config_methods;
3774         }
3775
3776         if (wpa_s->conf->p2p_listen_reg_class &&
3777             wpa_s->conf->p2p_listen_channel) {
3778                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3779                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3780         } else {
3781                 p2p.reg_class = 81;
3782                 /*
3783                  * Pick one of the social channels randomly as the listen
3784                  * channel.
3785                  */
3786                 os_get_random((u8 *) &r, sizeof(r));
3787                 p2p.channel = 1 + (r % 3) * 5;
3788         }
3789         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3790
3791         if (wpa_s->conf->p2p_oper_reg_class &&
3792             wpa_s->conf->p2p_oper_channel) {
3793                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3794                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3795                 p2p.cfg_op_channel = 1;
3796                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3797                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3798
3799         } else {
3800                 p2p.op_reg_class = 81;
3801                 /*
3802                  * Use random operation channel from (1, 6, 11) if no other
3803                  * preference is indicated.
3804                  */
3805                 os_get_random((u8 *) &r, sizeof(r));
3806                 p2p.op_channel = 1 + (r % 3) * 5;
3807                 p2p.cfg_op_channel = 0;
3808                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3809                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3810         }
3811
3812         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3813                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3814                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3815         }
3816
3817         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3818                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3819                 p2p.country[2] = 0x04;
3820         } else
3821                 os_memcpy(p2p.country, "XX\x04", 3);
3822
3823         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3824                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3825                            "channel list");
3826                 return -1;
3827         }
3828
3829         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3830                   WPS_DEV_TYPE_LEN);
3831
3832         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3833         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3834                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3835
3836         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3837                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3838
3839         p2p.max_peers = 100;
3840
3841         if (wpa_s->conf->p2p_ssid_postfix) {
3842                 p2p.ssid_postfix_len =
3843                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3844                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3845                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3846                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3847                           p2p.ssid_postfix_len);
3848         }
3849
3850         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3851
3852         p2p.max_listen = wpa_s->max_remain_on_chan;
3853
3854         global->p2p = p2p_init(&p2p);
3855         if (global->p2p == NULL)
3856                 return -1;
3857         global->p2p_init_wpa_s = wpa_s;
3858
3859         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3860                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3861                         continue;
3862                 p2p_add_wps_vendor_extension(
3863                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3864         }
3865
3866         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3867
3868         return 0;
3869 }
3870
3871
3872 /**
3873  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3874  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3875  *
3876  * This function deinitialize per-interface P2P data.
3877  */
3878 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3879 {
3880         if (wpa_s->driver && wpa_s->drv_priv)
3881                 wpa_drv_probe_req_report(wpa_s, 0);
3882
3883         if (wpa_s->go_params) {
3884                 /* Clear any stored provisioning info */
3885                 p2p_clear_provisioning_info(
3886                         wpa_s->global->p2p,
3887                         wpa_s->go_params->peer_device_addr);
3888         }
3889
3890         os_free(wpa_s->go_params);
3891         wpa_s->go_params = NULL;
3892         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3893         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3894         wpa_s->p2p_long_listen = 0;
3895         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3896         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3897         wpas_p2p_remove_pending_group_interface(wpa_s);
3898         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3899         wpas_p2p_listen_work_done(wpa_s);
3900         if (wpa_s->p2p_send_action_work) {
3901                 os_free(wpa_s->p2p_send_action_work->ctx);
3902                 radio_work_done(wpa_s->p2p_send_action_work);
3903                 wpa_s->p2p_send_action_work = NULL;
3904         }
3905         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3906
3907         wpabuf_free(wpa_s->p2p_oob_dev_pw);
3908         wpa_s->p2p_oob_dev_pw = NULL;
3909
3910         /* TODO: remove group interface from the driver if this wpa_s instance
3911          * is on top of a P2P group interface */
3912 }
3913
3914
3915 /**
3916  * wpas_p2p_deinit_global - Deinitialize global P2P module
3917  * @global: Pointer to global data from wpa_supplicant_init()
3918  *
3919  * This function deinitializes the global (per device) P2P module.
3920  */
3921 void wpas_p2p_deinit_global(struct wpa_global *global)
3922 {
3923         struct wpa_supplicant *wpa_s, *tmp;
3924
3925         wpa_s = global->ifaces;
3926         if (wpa_s)
3927                 wpas_p2p_service_flush(wpa_s);
3928
3929         if (global->p2p == NULL)
3930                 return;
3931
3932         /* Remove remaining P2P group interfaces */
3933         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3934                 wpa_s = wpa_s->next;
3935         while (wpa_s) {
3936                 tmp = global->ifaces;
3937                 while (tmp &&
3938                        (tmp == wpa_s ||
3939                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3940                         tmp = tmp->next;
3941                 }
3942                 if (tmp == NULL)
3943                         break;
3944                 /* Disconnect from the P2P group and deinit the interface */
3945                 wpas_p2p_disconnect(tmp);
3946         }
3947
3948         /*
3949          * Deinit GO data on any possibly remaining interface (if main
3950          * interface is used as GO).
3951          */
3952         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3953                 if (wpa_s->ap_iface)
3954                         wpas_p2p_group_deinit(wpa_s);
3955         }
3956
3957         p2p_deinit(global->p2p);
3958         global->p2p = NULL;
3959         global->p2p_init_wpa_s = NULL;
3960 }
3961
3962
3963 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3964 {
3965         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
3966             wpa_s->conf->p2p_no_group_iface)
3967                 return 0; /* separate interface disabled per configuration */
3968         if (wpa_s->drv_flags &
3969             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3970              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3971                 return 1; /* P2P group requires a new interface in every case
3972                            */
3973         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3974                 return 0; /* driver does not support concurrent operations */
3975         if (wpa_s->global->ifaces->next)
3976                 return 1; /* more that one interface already in use */
3977         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3978                 return 1; /* this interface is already in use */
3979         return 0;
3980 }
3981
3982
3983 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3984                                  const u8 *peer_addr,
3985                                  enum p2p_wps_method wps_method,
3986                                  int go_intent, const u8 *own_interface_addr,
3987                                  unsigned int force_freq, int persistent_group,
3988                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3989 {
3990         if (persistent_group && wpa_s->conf->persistent_reconnect)
3991                 persistent_group = 2;
3992
3993         /*
3994          * Increase GO config timeout if HT40 is used since it takes some time
3995          * to scan channels for coex purposes before the BSS can be started.
3996          */
3997         p2p_set_config_timeout(wpa_s->global->p2p,
3998                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3999
4000         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4001                            go_intent, own_interface_addr, force_freq,
4002                            persistent_group, ssid ? ssid->ssid : NULL,
4003                            ssid ? ssid->ssid_len : 0,
4004                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4005                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4006                            0);
4007 }
4008
4009
4010 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4011                                 const u8 *peer_addr,
4012                                 enum p2p_wps_method wps_method,
4013                                 int go_intent, const u8 *own_interface_addr,
4014                                 unsigned int force_freq, int persistent_group,
4015                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4016 {
4017         if (persistent_group && wpa_s->conf->persistent_reconnect)
4018                 persistent_group = 2;
4019
4020         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4021                              go_intent, own_interface_addr, force_freq,
4022                              persistent_group, ssid ? ssid->ssid : NULL,
4023                              ssid ? ssid->ssid_len : 0, pref_freq,
4024                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4025                              0);
4026 }
4027
4028
4029 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4030 {
4031         wpa_s->p2p_join_scan_count++;
4032         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4033                    wpa_s->p2p_join_scan_count);
4034         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4035                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4036                            " for join operationg - stop join attempt",
4037                            MAC2STR(wpa_s->pending_join_iface_addr));
4038                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4039                 if (wpa_s->p2p_auto_pd) {
4040                         wpa_s->p2p_auto_pd = 0;
4041                         wpa_msg_global(wpa_s, MSG_INFO,
4042                                        P2P_EVENT_PROV_DISC_FAILURE
4043                                        " p2p_dev_addr=" MACSTR " status=N/A",
4044                                        MAC2STR(wpa_s->pending_join_dev_addr));
4045                         return;
4046                 }
4047                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4048                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4049         }
4050 }
4051
4052
4053 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4054 {
4055         int *freqs, res, num, i;
4056
4057         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4058                 /* Multiple channels are supported and not all are in use */
4059                 return 0;
4060         }
4061
4062         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4063         if (!freqs)
4064                 return 1;
4065
4066         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4067                                         wpa_s->num_multichan_concurrent);
4068         if (num < 0) {
4069                 res = 1;
4070                 goto exit_free;
4071         }
4072
4073         for (i = 0; i < num; i++) {
4074                 if (freqs[i] == freq) {
4075                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4076                                    freq);
4077                         res = 0;
4078                         goto exit_free;
4079                 }
4080         }
4081
4082         res = 1;
4083
4084 exit_free:
4085         os_free(freqs);
4086         return res;
4087 }
4088
4089
4090 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4091                             const u8 *peer_dev_addr)
4092 {
4093         struct wpa_bss *bss;
4094         int updated;
4095
4096         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4097         if (bss == NULL)
4098                 return -1;
4099         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4100                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4101                            "last scan");
4102                 return 0;
4103         }
4104
4105         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4106                                     &bss->last_update);
4107         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4108                    "%ld.%06ld (%supdated in last scan)",
4109                    bss->last_update.sec, bss->last_update.usec,
4110                    updated ? "": "not ");
4111
4112         return updated;
4113 }
4114
4115
4116 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4117                                    struct wpa_scan_results *scan_res)
4118 {
4119         struct wpa_bss *bss = NULL;
4120         int freq;
4121         u8 iface_addr[ETH_ALEN];
4122
4123         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4124
4125         if (wpa_s->global->p2p_disabled)
4126                 return;
4127
4128         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4129                    scan_res ? (int) scan_res->num : -1,
4130                    wpa_s->p2p_auto_join ? "auto_" : "");
4131
4132         if (scan_res)
4133                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4134
4135         if (wpa_s->p2p_auto_pd) {
4136                 int join = wpas_p2p_peer_go(wpa_s,
4137                                             wpa_s->pending_join_dev_addr);
4138                 if (join == 0 &&
4139                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4140                         wpa_s->auto_pd_scan_retry++;
4141                         bss = wpa_bss_get_bssid_latest(
4142                                 wpa_s, wpa_s->pending_join_dev_addr);
4143                         if (bss) {
4144                                 freq = bss->freq;
4145                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4146                                            "the peer " MACSTR " at %d MHz",
4147                                            wpa_s->auto_pd_scan_retry,
4148                                            MAC2STR(wpa_s->
4149                                                    pending_join_dev_addr),
4150                                            freq);
4151                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4152                                 return;
4153                         }
4154                 }
4155
4156                 if (join < 0)
4157                         join = 0;
4158
4159                 wpa_s->p2p_auto_pd = 0;
4160                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4161                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4162                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4163                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4164                                       wpa_s->pending_join_dev_addr,
4165                                       wpa_s->pending_pd_config_methods, join,
4166                                       0, wpa_s->user_initiated_pd) < 0) {
4167                         wpa_s->p2p_auto_pd = 0;
4168                         wpa_msg_global(wpa_s, MSG_INFO,
4169                                        P2P_EVENT_PROV_DISC_FAILURE
4170                                        " p2p_dev_addr=" MACSTR " status=N/A",
4171                                        MAC2STR(wpa_s->pending_join_dev_addr));
4172                 }
4173                 return;
4174         }
4175
4176         if (wpa_s->p2p_auto_join) {
4177                 int join = wpas_p2p_peer_go(wpa_s,
4178                                             wpa_s->pending_join_dev_addr);
4179                 if (join < 0) {
4180                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4181                                    "running a GO -> use GO Negotiation");
4182                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4183                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4184                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4185                                          wpa_s->p2p_go_intent,
4186                                          wpa_s->p2p_connect_freq,
4187                                          wpa_s->p2p_persistent_id,
4188                                          wpa_s->p2p_pd_before_go_neg,
4189                                          wpa_s->p2p_go_ht40,
4190                                          wpa_s->p2p_go_vht);
4191                         return;
4192                 }
4193
4194                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4195                            "try to join the group", join ? "" :
4196                            " in older scan");
4197                 if (!join)
4198                         wpa_s->p2p_fallback_to_go_neg = 1;
4199         }
4200
4201         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4202                                  wpa_s->pending_join_iface_addr);
4203         if (freq < 0 &&
4204             p2p_get_interface_addr(wpa_s->global->p2p,
4205                                    wpa_s->pending_join_dev_addr,
4206                                    iface_addr) == 0 &&
4207             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4208         {
4209                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4210                            "address for join from " MACSTR " to " MACSTR
4211                            " based on newly discovered P2P peer entry",
4212                            MAC2STR(wpa_s->pending_join_iface_addr),
4213                            MAC2STR(iface_addr));
4214                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4215                           ETH_ALEN);
4216
4217                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4218                                          wpa_s->pending_join_iface_addr);
4219         }
4220         if (freq >= 0) {
4221                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4222                            "from P2P peer table: %d MHz", freq);
4223         }
4224         if (wpa_s->p2p_join_ssid_len) {
4225                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4226                            MACSTR " and SSID %s",
4227                            MAC2STR(wpa_s->pending_join_iface_addr),
4228                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4229                                         wpa_s->p2p_join_ssid_len));
4230                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4231                                   wpa_s->p2p_join_ssid,
4232                                   wpa_s->p2p_join_ssid_len);
4233         }
4234         if (!bss) {
4235                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4236                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4237                 bss = wpa_bss_get_bssid_latest(wpa_s,
4238                                                wpa_s->pending_join_iface_addr);
4239         }
4240         if (bss) {
4241                 freq = bss->freq;
4242                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4243                            "from BSS table: %d MHz (SSID %s)", freq,
4244                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4245         }
4246         if (freq > 0) {
4247                 u16 method;
4248
4249                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4250                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4251                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4252                                        "reason=FREQ_CONFLICT");
4253                         return;
4254                 }
4255
4256                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4257                            "prior to joining an existing group (GO " MACSTR
4258                            " freq=%u MHz)",
4259                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4260                 wpa_s->pending_pd_before_join = 1;
4261
4262                 switch (wpa_s->pending_join_wps_method) {
4263                 case WPS_PIN_DISPLAY:
4264                         method = WPS_CONFIG_KEYPAD;
4265                         break;
4266                 case WPS_PIN_KEYPAD:
4267                         method = WPS_CONFIG_DISPLAY;
4268                         break;
4269                 case WPS_PBC:
4270                         method = WPS_CONFIG_PUSHBUTTON;
4271                         break;
4272                 default:
4273                         method = 0;
4274                         break;
4275                 }
4276
4277                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4278                                                wpa_s->pending_join_dev_addr) ==
4279                      method)) {
4280                         /*
4281                          * We have already performed provision discovery for
4282                          * joining the group. Proceed directly to join
4283                          * operation without duplicated provision discovery. */
4284                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4285                                    "with " MACSTR " already done - proceed to "
4286                                    "join",
4287                                    MAC2STR(wpa_s->pending_join_dev_addr));
4288                         wpa_s->pending_pd_before_join = 0;
4289                         goto start;
4290                 }
4291
4292                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4293                                       wpa_s->pending_join_dev_addr, method, 1,
4294                                       freq, wpa_s->user_initiated_pd) < 0) {
4295                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4296                                    "Discovery Request before joining an "
4297                                    "existing group");
4298                         wpa_s->pending_pd_before_join = 0;
4299                         goto start;
4300                 }
4301                 return;
4302         }
4303
4304         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4305         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4306         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4307         wpas_p2p_check_join_scan_limit(wpa_s);
4308         return;
4309
4310 start:
4311         /* Start join operation immediately */
4312         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4313 }
4314
4315
4316 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4317                                    const u8 *ssid, size_t ssid_len)
4318 {
4319         int ret;
4320         struct wpa_driver_scan_params params;
4321         struct wpabuf *wps_ie, *ies;
4322         size_t ielen;
4323         int freqs[2] = { 0, 0 };
4324
4325         os_memset(&params, 0, sizeof(params));
4326
4327         /* P2P Wildcard SSID */
4328         params.num_ssids = 1;
4329         if (ssid && ssid_len) {
4330                 params.ssids[0].ssid = ssid;
4331                 params.ssids[0].ssid_len = ssid_len;
4332                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4333                 wpa_s->p2p_join_ssid_len = ssid_len;
4334         } else {
4335                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4336                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4337                 wpa_s->p2p_join_ssid_len = 0;
4338         }
4339
4340         wpa_s->wps->dev.p2p = 1;
4341         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4342                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4343                                         NULL);
4344         if (wps_ie == NULL) {
4345                 wpas_p2p_scan_res_join(wpa_s, NULL);
4346                 return;
4347         }
4348
4349         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4350         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4351         if (ies == NULL) {
4352                 wpabuf_free(wps_ie);
4353                 wpas_p2p_scan_res_join(wpa_s, NULL);
4354                 return;
4355         }
4356         wpabuf_put_buf(ies, wps_ie);
4357         wpabuf_free(wps_ie);
4358
4359         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4360
4361         params.p2p_probe = 1;
4362         params.extra_ies = wpabuf_head(ies);
4363         params.extra_ies_len = wpabuf_len(ies);
4364
4365         if (!freq) {
4366                 int oper_freq;
4367                 /*
4368                  * If freq is not provided, check the operating freq of the GO
4369                  * and use a single channel scan on if possible.
4370                  */
4371                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4372                                               wpa_s->pending_join_iface_addr);
4373                 if (oper_freq > 0)
4374                         freq = oper_freq;
4375         }
4376         if (freq > 0) {
4377                 freqs[0] = freq;
4378                 params.freqs = freqs;
4379         }
4380
4381         /*
4382          * Run a scan to update BSS table and start Provision Discovery once
4383          * the new scan results become available.
4384          */
4385         ret = wpa_drv_scan(wpa_s, &params);
4386         if (!ret) {
4387                 os_get_reltime(&wpa_s->scan_trigger_time);
4388                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4389                 wpa_s->own_scan_requested = 1;
4390         }
4391
4392         wpabuf_free(ies);
4393
4394         if (ret) {
4395                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4396                            "try again later");
4397                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4398                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4399                 wpas_p2p_check_join_scan_limit(wpa_s);
4400         }
4401 }
4402
4403
4404 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4405 {
4406         struct wpa_supplicant *wpa_s = eloop_ctx;
4407         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4408 }
4409
4410
4411 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4412                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4413                          int auto_join, int op_freq,
4414                          const u8 *ssid, size_t ssid_len)
4415 {
4416         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4417                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4418                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4419                    auto_join ? " (auto_join)" : "");
4420         if (ssid && ssid_len) {
4421                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4422                            wpa_ssid_txt(ssid, ssid_len));
4423         }
4424
4425         wpa_s->p2p_auto_pd = 0;
4426         wpa_s->p2p_auto_join = !!auto_join;
4427         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4428         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4429         wpa_s->pending_join_wps_method = wps_method;
4430
4431         /* Make sure we are not running find during connection establishment */
4432         wpas_p2p_stop_find(wpa_s);
4433
4434         wpa_s->p2p_join_scan_count = 0;
4435         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4436         return 0;
4437 }
4438
4439
4440 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4441                                const u8 *ssid, size_t ssid_len)
4442 {
4443         struct wpa_supplicant *group;
4444         struct p2p_go_neg_results res;
4445         struct wpa_bss *bss;
4446
4447         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4448         if (group == NULL)
4449                 return -1;
4450         if (group != wpa_s) {
4451                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4452                           sizeof(group->p2p_pin));
4453                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4454         } else {
4455                 /*
4456                  * Need to mark the current interface for p2p_group_formation
4457                  * when a separate group interface is not used. This is needed
4458                  * to allow p2p_cancel stop a pending p2p_connect-join.
4459                  * wpas_p2p_init_group_interface() addresses this for the case
4460                  * where a separate group interface is used.
4461                  */
4462                 wpa_s->global->p2p_group_formation = wpa_s;
4463         }
4464
4465         group->p2p_in_provisioning = 1;
4466         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4467
4468         os_memset(&res, 0, sizeof(res));
4469         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4470         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4471                   ETH_ALEN);
4472         res.wps_method = wpa_s->pending_join_wps_method;
4473         if (freq && ssid && ssid_len) {
4474                 res.freq = freq;
4475                 res.ssid_len = ssid_len;
4476                 os_memcpy(res.ssid, ssid, ssid_len);
4477         } else {
4478                 bss = wpa_bss_get_bssid_latest(wpa_s,
4479                                                wpa_s->pending_join_iface_addr);
4480                 if (bss) {
4481                         res.freq = bss->freq;
4482                         res.ssid_len = bss->ssid_len;
4483                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4484                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4485                                    bss->freq,
4486                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4487                 }
4488         }
4489
4490         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4491                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4492                            "starting client");
4493                 wpa_drv_cancel_remain_on_channel(wpa_s);
4494                 wpa_s->off_channel_freq = 0;
4495                 wpa_s->roc_waiting_drv_freq = 0;
4496         }
4497         wpas_start_wps_enrollee(group, &res);
4498
4499         /*
4500          * Allow a longer timeout for join-a-running-group than normal 15
4501          * second group formation timeout since the GO may not have authorized
4502          * our connection yet.
4503          */
4504         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4505         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4506                                wpa_s, NULL);
4507
4508         return 0;
4509 }
4510
4511
4512 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4513                                 int *force_freq, int *pref_freq, int go)
4514 {
4515         int *freqs, res;
4516         unsigned int freq_in_use = 0, num, i;
4517
4518         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4519         if (!freqs)
4520                 return -1;
4521
4522         num = get_shared_radio_freqs(wpa_s, freqs,
4523                                      wpa_s->num_multichan_concurrent);
4524         wpa_printf(MSG_DEBUG,
4525                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4526                    freq, wpa_s->num_multichan_concurrent, num);
4527
4528         if (freq > 0) {
4529                 int ret;
4530                 if (go)
4531                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4532                 else
4533                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4534                 if (!ret) {
4535                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4536                                    "(%u MHz) is not supported for P2P uses",
4537                                    freq);
4538                         res = -3;
4539                         goto exit_free;
4540                 }
4541
4542                 for (i = 0; i < num; i++) {
4543                         if (freqs[i] == freq)
4544                                 freq_in_use = 1;
4545                 }
4546
4547                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4548                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4549                                    freq);
4550                         res = -2;
4551                         goto exit_free;
4552                 }
4553                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4554                            "requested channel (%u MHz)", freq);
4555                 *force_freq = freq;
4556                 goto exit_ok;
4557         }
4558
4559         for (i = 0; i < num; i++) {
4560                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4561                         continue;
4562
4563                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4564                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4565                                    freqs[i]);
4566                         *pref_freq = freqs[i];
4567                 } else {
4568                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4569                                    freqs[i]);
4570                         *force_freq = freqs[i];
4571                 }
4572                 break;
4573         }
4574
4575         if (i == num) {
4576                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4577                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4578                         *force_freq = 0;
4579                 } else if (num < wpa_s->num_multichan_concurrent) {
4580                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4581                         *force_freq = 0;
4582                 } else {
4583                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4584                         res = -2;
4585                         goto exit_free;
4586                 }
4587         }
4588
4589 exit_ok:
4590         res = 0;
4591 exit_free:
4592         os_free(freqs);
4593         return res;
4594 }
4595
4596
4597 /**
4598  * wpas_p2p_connect - Request P2P Group Formation to be started
4599  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4600  * @peer_addr: Address of the peer P2P Device
4601  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4602  * @persistent_group: Whether to create a persistent group
4603  * @auto_join: Whether to select join vs. GO Negotiation automatically
4604  * @join: Whether to join an existing group (as a client) instead of starting
4605  *      Group Owner negotiation; @peer_addr is BSSID in that case
4606  * @auth: Whether to only authorize the connection instead of doing that and
4607  *      initiating Group Owner negotiation
4608  * @go_intent: GO Intent or -1 to use default
4609  * @freq: Frequency for the group or 0 for auto-selection
4610  * @persistent_id: Persistent group credentials to use for forcing GO
4611  *      parameters or -1 to generate new values (SSID/passphrase)
4612  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4613  *      interoperability workaround when initiating group formation
4614  * @ht40: Start GO with 40 MHz channel width
4615  * @vht:  Start GO with VHT support
4616  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4617  *      failure, -2 on failure due to channel not currently available,
4618  *      -3 if forced channel is not supported
4619  */
4620 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4621                      const char *pin, enum p2p_wps_method wps_method,
4622                      int persistent_group, int auto_join, int join, int auth,
4623                      int go_intent, int freq, int persistent_id, int pd,
4624                      int ht40, int vht)
4625 {
4626         int force_freq = 0, pref_freq = 0;
4627         int ret = 0, res;
4628         enum wpa_driver_if_type iftype;
4629         const u8 *if_addr;
4630         struct wpa_ssid *ssid = NULL;
4631
4632         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4633                 return -1;
4634
4635         if (persistent_id >= 0) {
4636                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4637                 if (ssid == NULL || ssid->disabled != 2 ||
4638                     ssid->mode != WPAS_MODE_P2P_GO)
4639                         return -1;
4640         }
4641
4642         os_free(wpa_s->global->add_psk);
4643         wpa_s->global->add_psk = NULL;
4644
4645         wpa_s->global->p2p_fail_on_wps_complete = 0;
4646
4647         if (go_intent < 0)
4648                 go_intent = wpa_s->conf->p2p_go_intent;
4649
4650         if (!auth)
4651                 wpa_s->p2p_long_listen = 0;
4652
4653         wpa_s->p2p_wps_method = wps_method;
4654         wpa_s->p2p_persistent_group = !!persistent_group;
4655         wpa_s->p2p_persistent_id = persistent_id;
4656         wpa_s->p2p_go_intent = go_intent;
4657         wpa_s->p2p_connect_freq = freq;
4658         wpa_s->p2p_fallback_to_go_neg = 0;
4659         wpa_s->p2p_pd_before_go_neg = !!pd;
4660         wpa_s->p2p_go_ht40 = !!ht40;
4661         wpa_s->p2p_go_vht = !!vht;
4662
4663         if (pin)
4664                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4665         else if (wps_method == WPS_PIN_DISPLAY) {
4666                 ret = wps_generate_pin();
4667                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4668                             ret);
4669                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4670                            wpa_s->p2p_pin);
4671         } else
4672                 wpa_s->p2p_pin[0] = '\0';
4673
4674         if (join || auto_join) {
4675                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4676                 if (auth) {
4677                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4678                                    "connect a running group from " MACSTR,
4679                                    MAC2STR(peer_addr));
4680                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4681                         return ret;
4682                 }
4683                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4684                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4685                                            iface_addr) < 0) {
4686                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4687                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4688                                          dev_addr);
4689                 }
4690                 if (auto_join) {
4691                         os_get_reltime(&wpa_s->p2p_auto_started);
4692                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4693                                    "%ld.%06ld",
4694                                    wpa_s->p2p_auto_started.sec,
4695                                    wpa_s->p2p_auto_started.usec);
4696                 }
4697                 wpa_s->user_initiated_pd = 1;
4698                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4699                                   auto_join, freq, NULL, 0) < 0)
4700                         return -1;
4701                 return ret;
4702         }
4703
4704         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4705                                    go_intent == 15);
4706         if (res)
4707                 return res;
4708         wpas_p2p_set_own_freq_preference(wpa_s,
4709                                          force_freq ? force_freq : pref_freq);
4710
4711         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4712
4713         if (wpa_s->create_p2p_iface) {
4714                 /* Prepare to add a new interface for the group */
4715                 iftype = WPA_IF_P2P_GROUP;
4716                 if (go_intent == 15)
4717                         iftype = WPA_IF_P2P_GO;
4718                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4719                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4720                                    "interface for the group");
4721                         return -1;
4722                 }
4723
4724                 if_addr = wpa_s->pending_interface_addr;
4725         } else
4726                 if_addr = wpa_s->own_addr;
4727
4728         if (auth) {
4729                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4730                                          go_intent, if_addr,
4731                                          force_freq, persistent_group, ssid,
4732                                          pref_freq) < 0)
4733                         return -1;
4734                 return ret;
4735         }
4736
4737         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4738                                   go_intent, if_addr, force_freq,
4739                                   persistent_group, ssid, pref_freq) < 0) {
4740                 if (wpa_s->create_p2p_iface)
4741                         wpas_p2p_remove_pending_group_interface(wpa_s);
4742                 return -1;
4743         }
4744         return ret;
4745 }
4746
4747
4748 /**
4749  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4750  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4751  * @freq: Frequency of the channel in MHz
4752  * @duration: Duration of the stay on the channel in milliseconds
4753  *
4754  * This callback is called when the driver indicates that it has started the
4755  * requested remain-on-channel duration.
4756  */
4757 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4758                                    unsigned int freq, unsigned int duration)
4759 {
4760         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4761                 return;
4762         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4763                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4764                               wpa_s->pending_listen_duration);
4765                 wpa_s->pending_listen_freq = 0;
4766         }
4767 }
4768
4769
4770 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4771                                  unsigned int timeout)
4772 {
4773         /* Limit maximum Listen state time based on driver limitation. */
4774         if (timeout > wpa_s->max_remain_on_chan)
4775                 timeout = wpa_s->max_remain_on_chan;
4776
4777         return p2p_listen(wpa_s->global->p2p, timeout);
4778 }
4779
4780
4781 /**
4782  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4783  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4784  * @freq: Frequency of the channel in MHz
4785  *
4786  * This callback is called when the driver indicates that a remain-on-channel
4787  * operation has been completed, i.e., the duration on the requested channel
4788  * has timed out.
4789  */
4790 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4791                                           unsigned int freq)
4792 {
4793         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4794                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4795                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4796         wpas_p2p_listen_work_done(wpa_s);
4797         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4798                 return;
4799         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4800                 return; /* P2P module started a new operation */
4801         if (offchannel_pending_action_tx(wpa_s))
4802                 return;
4803         if (wpa_s->p2p_long_listen > 0)
4804                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4805         if (wpa_s->p2p_long_listen > 0) {
4806                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4807                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4808         } else {
4809                 /*
4810                  * When listen duration is over, stop listen & update p2p_state
4811                  * to IDLE.
4812                  */
4813                 p2p_stop_listen(wpa_s->global->p2p);
4814         }
4815 }
4816
4817
4818 /**
4819  * wpas_p2p_group_remove - Remove a P2P group
4820  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4821  * @ifname: Network interface name of the group interface or "*" to remove all
4822  *      groups
4823  * Returns: 0 on success, -1 on failure
4824  *
4825  * This function is used to remove a P2P group. This can be used to disconnect
4826  * from a group in which the local end is a P2P Client or to end a P2P Group in
4827  * case the local end is the Group Owner. If a virtual network interface was
4828  * created for this group, that interface will be removed. Otherwise, only the
4829  * configured P2P group network will be removed from the interface.
4830  */
4831 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4832 {
4833         struct wpa_global *global = wpa_s->global;
4834
4835         if (os_strcmp(ifname, "*") == 0) {
4836                 struct wpa_supplicant *prev;
4837                 wpa_s = global->ifaces;
4838                 while (wpa_s) {
4839                         prev = wpa_s;
4840                         wpa_s = wpa_s->next;
4841                         if (prev->p2p_group_interface !=
4842                             NOT_P2P_GROUP_INTERFACE ||
4843                             (prev->current_ssid &&
4844                              prev->current_ssid->p2p_group))
4845                                 wpas_p2p_disconnect(prev);
4846                 }
4847                 return 0;
4848         }
4849
4850         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4851                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4852                         break;
4853         }
4854
4855         return wpas_p2p_disconnect(wpa_s);
4856 }
4857
4858
4859 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4860 {
4861         unsigned int r;
4862
4863         if (freq == 2) {
4864                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4865                            "band");
4866                 if (wpa_s->best_24_freq > 0 &&
4867                     p2p_supported_freq_go(wpa_s->global->p2p,
4868                                           wpa_s->best_24_freq)) {
4869                         freq = wpa_s->best_24_freq;
4870                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4871                                    "channel: %d MHz", freq);
4872                 } else {
4873                         os_get_random((u8 *) &r, sizeof(r));
4874                         freq = 2412 + (r % 3) * 25;
4875                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4876                                    "channel: %d MHz", freq);
4877                 }
4878         }
4879
4880         if (freq == 5) {
4881                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4882                            "band");
4883                 if (wpa_s->best_5_freq > 0 &&
4884                     p2p_supported_freq_go(wpa_s->global->p2p,
4885                                        wpa_s->best_5_freq)) {
4886                         freq = wpa_s->best_5_freq;
4887                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4888                                    "channel: %d MHz", freq);
4889                 } else {
4890                         os_get_random((u8 *) &r, sizeof(r));
4891                         freq = 5180 + (r % 4) * 20;
4892                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4893                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4894                                            "5 GHz channel for P2P group");
4895                                 return -1;
4896                         }
4897                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4898                                    "channel: %d MHz", freq);
4899                 }
4900         }
4901
4902         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4903                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4904                            "(%u MHz) is not supported for P2P uses",
4905                            freq);
4906                 return -1;
4907         }
4908
4909         return freq;
4910 }
4911
4912
4913 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4914                                    struct p2p_go_neg_results *params,
4915                                    int freq, int ht40, int vht,
4916                                    const struct p2p_channels *channels)
4917 {
4918         int res, *freqs;
4919         unsigned int pref_freq;
4920         unsigned int num, i;
4921
4922         os_memset(params, 0, sizeof(*params));
4923         params->role_go = 1;
4924         params->ht40 = ht40;
4925         params->vht = vht;
4926         if (freq) {
4927                 if (!freq_included(channels, freq)) {
4928                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4929                                    "accepted", freq);
4930                         return -1;
4931                 }
4932                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4933                            "frequency %d MHz", freq);
4934                 params->freq = freq;
4935         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4936                    wpa_s->conf->p2p_oper_channel >= 1 &&
4937                    wpa_s->conf->p2p_oper_channel <= 11 &&
4938                    freq_included(channels,
4939                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4940                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4941                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4942                            "frequency %d MHz", params->freq);
4943         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4944                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4945                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4946                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4947                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4948                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4949                    freq_included(channels,
4950                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4951                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4952                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4953                            "frequency %d MHz", params->freq);
4954         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4955                    wpa_s->best_overall_freq > 0 &&
4956                    p2p_supported_freq_go(wpa_s->global->p2p,
4957                                          wpa_s->best_overall_freq) &&
4958                    freq_included(channels, wpa_s->best_overall_freq)) {
4959                 params->freq = wpa_s->best_overall_freq;
4960                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
4961                            "channel %d MHz", params->freq);
4962         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4963                    wpa_s->best_24_freq > 0 &&
4964                    p2p_supported_freq_go(wpa_s->global->p2p,
4965                                          wpa_s->best_24_freq) &&
4966                    freq_included(channels, wpa_s->best_24_freq)) {
4967                 params->freq = wpa_s->best_24_freq;
4968                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
4969                            "channel %d MHz", params->freq);
4970         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4971                    wpa_s->best_5_freq > 0 &&
4972                    p2p_supported_freq_go(wpa_s->global->p2p,
4973                                          wpa_s->best_5_freq) &&
4974                    freq_included(channels, wpa_s->best_5_freq)) {
4975                 params->freq = wpa_s->best_5_freq;
4976                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
4977                            "channel %d MHz", params->freq);
4978         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
4979                                                   channels))) {
4980                 params->freq = pref_freq;
4981                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
4982                            "channels", params->freq);
4983         } else {
4984                 int chan;
4985                 for (chan = 0; chan < 11; chan++) {
4986                         params->freq = 2412 + chan * 5;
4987                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
4988                                                       params->freq) &&
4989                             freq_included(channels, params->freq))
4990                                 break;
4991                 }
4992                 if (chan == 11) {
4993                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
4994                                    "allowed");
4995                         return -1;
4996                 }
4997                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
4998                            "known)", params->freq);
4999         }
5000
5001         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
5002         if (!freqs)
5003                 return -1;
5004
5005         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5006                                         wpa_s->num_multichan_concurrent);
5007         if (res < 0) {
5008                 os_free(freqs);
5009                 return -1;
5010         }
5011         num = res;
5012
5013         for (i = 0; i < num; i++) {
5014                 if (freq && freqs[i] == freq)
5015                         break;
5016                 if (!freq && freq_included(channels, freqs[i])) {
5017                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5018                                    freqs[i]);
5019                         params->freq = freqs[i];
5020                         break;
5021                 }
5022         }
5023
5024         if (i == num) {
5025                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5026                         if (freq)
5027                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5028                         else
5029                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5030                         os_free(freqs);
5031                         return -1;
5032                 } else if (num == 0) {
5033                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5034                 } else {
5035                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5036                 }
5037         }
5038
5039         os_free(freqs);
5040         return 0;
5041 }
5042
5043
5044 static struct wpa_supplicant *
5045 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5046                          int go)
5047 {
5048         struct wpa_supplicant *group_wpa_s;
5049
5050         if (!wpas_p2p_create_iface(wpa_s)) {
5051                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5052                         "operations");
5053                 wpa_s->p2p_first_connection_timeout = 0;
5054                 return wpa_s;
5055         }
5056
5057         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5058                                          WPA_IF_P2P_CLIENT) < 0) {
5059                 wpa_msg_global(wpa_s, MSG_ERROR,
5060                                "P2P: Failed to add group interface");
5061                 return NULL;
5062         }
5063         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5064         if (group_wpa_s == NULL) {
5065                 wpa_msg_global(wpa_s, MSG_ERROR,
5066                                "P2P: Failed to initialize group interface");
5067                 wpas_p2p_remove_pending_group_interface(wpa_s);
5068                 return NULL;
5069         }
5070
5071         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5072                 group_wpa_s->ifname);
5073         group_wpa_s->p2p_first_connection_timeout = 0;
5074         return group_wpa_s;
5075 }
5076
5077
5078 /**
5079  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5080  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5081  * @persistent_group: Whether to create a persistent group
5082  * @freq: Frequency for the group or 0 to indicate no hardcoding
5083  * @ht40: Start GO with 40 MHz channel width
5084  * @vht:  Start GO with VHT support
5085  * Returns: 0 on success, -1 on failure
5086  *
5087  * This function creates a new P2P group with the local end as the Group Owner,
5088  * i.e., without using Group Owner Negotiation.
5089  */
5090 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5091                        int freq, int ht40, int vht)
5092 {
5093         struct p2p_go_neg_results params;
5094
5095         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5096                 return -1;
5097
5098         os_free(wpa_s->global->add_psk);
5099         wpa_s->global->add_psk = NULL;
5100
5101         /* Make sure we are not running find during connection establishment */
5102         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5103         wpas_p2p_stop_find_oper(wpa_s);
5104
5105         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5106         if (freq < 0)
5107                 return -1;
5108
5109         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5110                 return -1;
5111         if (params.freq &&
5112             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5113                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5114                            "(%u MHz) is not supported for P2P uses",
5115                            params.freq);
5116                 return -1;
5117         }
5118         p2p_go_params(wpa_s->global->p2p, &params);
5119         params.persistent_group = persistent_group;
5120
5121         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5122         if (wpa_s == NULL)
5123                 return -1;
5124         wpas_start_wps_go(wpa_s, &params, 0);
5125
5126         return 0;
5127 }
5128
5129
5130 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5131                                  struct wpa_ssid *params, int addr_allocated)
5132 {
5133         struct wpa_ssid *ssid;
5134
5135         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5136         if (wpa_s == NULL)
5137                 return -1;
5138         wpa_s->p2p_last_4way_hs_fail = NULL;
5139
5140         wpa_supplicant_ap_deinit(wpa_s);
5141
5142         ssid = wpa_config_add_network(wpa_s->conf);
5143         if (ssid == NULL)
5144                 return -1;
5145         wpa_config_set_network_defaults(ssid);
5146         ssid->temporary = 1;
5147         ssid->proto = WPA_PROTO_RSN;
5148         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5149         ssid->group_cipher = WPA_CIPHER_CCMP;
5150         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5151         ssid->ssid = os_malloc(params->ssid_len);
5152         if (ssid->ssid == NULL) {
5153                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5154                 return -1;
5155         }
5156         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5157         ssid->ssid_len = params->ssid_len;
5158         ssid->p2p_group = 1;
5159         ssid->export_keys = 1;
5160         if (params->psk_set) {
5161                 os_memcpy(ssid->psk, params->psk, 32);
5162                 ssid->psk_set = 1;
5163         }
5164         if (params->passphrase)
5165                 ssid->passphrase = os_strdup(params->passphrase);
5166
5167         wpa_s->show_group_started = 1;
5168
5169         wpa_supplicant_select_network(wpa_s, ssid);
5170
5171         return 0;
5172 }
5173
5174
5175 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5176                                   struct wpa_ssid *ssid, int addr_allocated,
5177                                   int freq, int ht40, int vht,
5178                                   const struct p2p_channels *channels,
5179                                   int connection_timeout)
5180 {
5181         struct p2p_go_neg_results params;
5182         int go = 0;
5183
5184         if (ssid->disabled != 2 || ssid->ssid == NULL)
5185                 return -1;
5186
5187         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5188             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5189                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5190                            "already running");
5191                 return 0;
5192         }
5193
5194         os_free(wpa_s->global->add_psk);
5195         wpa_s->global->add_psk = NULL;
5196
5197         /* Make sure we are not running find during connection establishment */
5198         wpas_p2p_stop_find_oper(wpa_s);
5199
5200         wpa_s->p2p_fallback_to_go_neg = 0;
5201
5202         if (ssid->mode == WPAS_MODE_INFRA)
5203                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
5204
5205         if (ssid->mode != WPAS_MODE_P2P_GO)
5206                 return -1;
5207
5208         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5209         if (freq < 0)
5210                 return -1;
5211
5212         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5213                 return -1;
5214
5215         params.role_go = 1;
5216         params.psk_set = ssid->psk_set;
5217         if (params.psk_set)
5218                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5219         if (ssid->passphrase) {
5220                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5221                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5222                                    "persistent group");
5223                         return -1;
5224                 }
5225                 os_strlcpy(params.passphrase, ssid->passphrase,
5226                            sizeof(params.passphrase));
5227         }
5228         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5229         params.ssid_len = ssid->ssid_len;
5230         params.persistent_group = 1;
5231
5232         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5233         if (wpa_s == NULL)
5234                 return -1;
5235
5236         wpa_s->p2p_first_connection_timeout = connection_timeout;
5237         wpas_start_wps_go(wpa_s, &params, 0);
5238
5239         return 0;
5240 }
5241
5242
5243 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5244                                struct wpabuf *proberesp_ies)
5245 {
5246         struct wpa_supplicant *wpa_s = ctx;
5247         if (wpa_s->ap_iface) {
5248                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5249                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5250                         wpabuf_free(beacon_ies);
5251                         wpabuf_free(proberesp_ies);
5252                         return;
5253                 }
5254                 if (beacon_ies) {
5255                         wpabuf_free(hapd->p2p_beacon_ie);
5256                         hapd->p2p_beacon_ie = beacon_ies;
5257                 }
5258                 wpabuf_free(hapd->p2p_probe_resp_ie);
5259                 hapd->p2p_probe_resp_ie = proberesp_ies;
5260         } else {
5261                 wpabuf_free(beacon_ies);
5262                 wpabuf_free(proberesp_ies);
5263         }
5264         wpa_supplicant_ap_update_beacon(wpa_s);
5265 }
5266
5267
5268 static void wpas_p2p_idle_update(void *ctx, int idle)
5269 {
5270         struct wpa_supplicant *wpa_s = ctx;
5271         if (!wpa_s->ap_iface)
5272                 return;
5273         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5274         if (idle) {
5275                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5276                     wpa_s->p2p_in_provisioning) {
5277                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5278                         return;
5279                 }
5280                 wpas_p2p_set_group_idle_timeout(wpa_s);
5281         } else
5282                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5283 }
5284
5285
5286 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5287                                        struct wpa_ssid *ssid)
5288 {
5289         struct p2p_group *group;
5290         struct p2p_group_config *cfg;
5291
5292         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5293                 return NULL;
5294
5295         cfg = os_zalloc(sizeof(*cfg));
5296         if (cfg == NULL)
5297                 return NULL;
5298
5299         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5300                 cfg->persistent_group = 2;
5301         else if (ssid->p2p_persistent_group)
5302                 cfg->persistent_group = 1;
5303         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5304         if (wpa_s->max_stations &&
5305             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5306                 cfg->max_clients = wpa_s->max_stations;
5307         else
5308                 cfg->max_clients = wpa_s->conf->max_num_sta;
5309         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5310         cfg->ssid_len = ssid->ssid_len;
5311         cfg->freq = ssid->frequency;
5312         cfg->cb_ctx = wpa_s;
5313         cfg->ie_update = wpas_p2p_ie_update;
5314         cfg->idle_update = wpas_p2p_idle_update;
5315
5316         group = p2p_group_init(wpa_s->global->p2p, cfg);
5317         if (group == NULL)
5318                 os_free(cfg);
5319         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5320                 p2p_group_notif_formation_done(group);
5321         wpa_s->p2p_group = group;
5322         return group;
5323 }
5324
5325
5326 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5327                           int registrar)
5328 {
5329         struct wpa_ssid *ssid = wpa_s->current_ssid;
5330
5331         if (!wpa_s->p2p_in_provisioning) {
5332                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5333                            "provisioning not in progress");
5334                 return;
5335         }
5336
5337         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5338                 u8 go_dev_addr[ETH_ALEN];
5339                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5340                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5341                                           ssid->ssid_len);
5342                 /* Clear any stored provisioning info */
5343                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5344         }
5345
5346         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5347                              NULL);
5348         wpa_s->p2p_go_group_formation_completed = 1;
5349         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5350                 /*
5351                  * Use a separate timeout for initial data connection to
5352                  * complete to allow the group to be removed automatically if
5353                  * something goes wrong in this step before the P2P group idle
5354                  * timeout mechanism is taken into use.
5355                  */
5356                 wpa_dbg(wpa_s, MSG_DEBUG,
5357                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5358                         P2P_MAX_INITIAL_CONN_WAIT);
5359                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5360                                        wpas_p2p_group_formation_timeout,
5361                                        wpa_s->parent, NULL);
5362         } else if (ssid) {
5363                 /*
5364                  * Use a separate timeout for initial data connection to
5365                  * complete to allow the group to be removed automatically if
5366                  * the client does not complete data connection successfully.
5367                  */
5368                 wpa_dbg(wpa_s, MSG_DEBUG,
5369                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5370                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5371                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5372                                        wpas_p2p_group_formation_timeout,
5373                                        wpa_s->parent, NULL);
5374                 /*
5375                  * Complete group formation on first successful data connection
5376                  */
5377                 wpa_s->p2p_go_group_formation_completed = 0;
5378         }
5379         if (wpa_s->global->p2p)
5380                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5381         wpas_group_formation_completed(wpa_s, 1);
5382 }
5383
5384
5385 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5386                          struct wps_event_fail *fail)
5387 {
5388         if (!wpa_s->p2p_in_provisioning) {
5389                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5390                            "provisioning not in progress");
5391                 return;
5392         }
5393
5394         if (wpa_s->go_params) {
5395                 p2p_clear_provisioning_info(
5396                         wpa_s->global->p2p,
5397                         wpa_s->go_params->peer_device_addr);
5398         }
5399
5400         wpas_notify_p2p_wps_failed(wpa_s, fail);
5401
5402         if (wpa_s == wpa_s->global->p2p_group_formation) {
5403                 /*
5404                  * Allow some time for the failed WPS negotiation exchange to
5405                  * complete, but remove the group since group formation cannot
5406                  * succeed after provisioning failure.
5407                  */
5408                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5409                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5410                 eloop_deplete_timeout(0, 50000,
5411                                       wpas_p2p_group_formation_timeout,
5412                                       wpa_s->parent, NULL);
5413         }
5414 }
5415
5416
5417 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5418 {
5419         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5420             !wpa_s->p2p_in_provisioning)
5421                 return 0;
5422
5423         wpas_p2p_grpform_fail_after_wps(wpa_s);
5424
5425         return 1;
5426 }
5427
5428
5429 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5430                        const char *config_method,
5431                        enum wpas_p2p_prov_disc_use use)
5432 {
5433         u16 config_methods;
5434
5435         wpa_s->p2p_fallback_to_go_neg = 0;
5436         wpa_s->pending_pd_use = NORMAL_PD;
5437         if (os_strncmp(config_method, "display", 7) == 0)
5438                 config_methods = WPS_CONFIG_DISPLAY;
5439         else if (os_strncmp(config_method, "keypad", 6) == 0)
5440                 config_methods = WPS_CONFIG_KEYPAD;
5441         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5442                  os_strncmp(config_method, "pushbutton", 10) == 0)
5443                 config_methods = WPS_CONFIG_PUSHBUTTON;
5444         else {
5445                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5446                 return -1;
5447         }
5448
5449         if (use == WPAS_P2P_PD_AUTO) {
5450                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5451                 wpa_s->pending_pd_config_methods = config_methods;
5452                 wpa_s->p2p_auto_pd = 1;
5453                 wpa_s->p2p_auto_join = 0;
5454                 wpa_s->pending_pd_before_join = 0;
5455                 wpa_s->auto_pd_scan_retry = 0;
5456                 wpas_p2p_stop_find(wpa_s);
5457                 wpa_s->p2p_join_scan_count = 0;
5458                 os_get_reltime(&wpa_s->p2p_auto_started);
5459                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5460                            wpa_s->p2p_auto_started.sec,
5461                            wpa_s->p2p_auto_started.usec);
5462                 wpas_p2p_join_scan(wpa_s, NULL);
5463                 return 0;
5464         }
5465
5466         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5467                 return -1;
5468
5469         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5470                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5471                                  0, 1);
5472 }
5473
5474
5475 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5476                               char *end)
5477 {
5478         return p2p_scan_result_text(ies, ies_len, buf, end);
5479 }
5480
5481
5482 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5483 {
5484         if (!offchannel_pending_action_tx(wpa_s))
5485                 return;
5486
5487         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5488                    "operation request");
5489         offchannel_clear_pending_action_tx(wpa_s);
5490 }
5491
5492
5493 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5494                   enum p2p_discovery_type type,
5495                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5496                   const u8 *dev_id, unsigned int search_delay)
5497 {
5498         wpas_p2p_clear_pending_action_tx(wpa_s);
5499         wpa_s->p2p_long_listen = 0;
5500
5501         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5502             wpa_s->p2p_in_provisioning)
5503                 return -1;
5504
5505         wpa_supplicant_cancel_sched_scan(wpa_s);
5506
5507         return p2p_find(wpa_s->global->p2p, timeout, type,
5508                         num_req_dev_types, req_dev_types, dev_id,
5509                         search_delay);
5510 }
5511
5512
5513 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5514 {
5515         wpas_p2p_clear_pending_action_tx(wpa_s);
5516         wpa_s->p2p_long_listen = 0;
5517         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5518         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5519
5520         if (wpa_s->global->p2p)
5521                 p2p_stop_find(wpa_s->global->p2p);
5522
5523         return 0;
5524 }
5525
5526
5527 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5528 {
5529         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5530                 return;
5531         wpas_p2p_remove_pending_group_interface(wpa_s);
5532 }
5533
5534
5535 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5536 {
5537         struct wpa_supplicant *wpa_s = eloop_ctx;
5538         wpa_s->p2p_long_listen = 0;
5539 }
5540
5541
5542 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5543 {
5544         int res;
5545
5546         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5547                 return -1;
5548
5549         wpa_supplicant_cancel_sched_scan(wpa_s);
5550         wpas_p2p_clear_pending_action_tx(wpa_s);
5551
5552         if (timeout == 0) {
5553                 /*
5554                  * This is a request for unlimited Listen state. However, at
5555                  * least for now, this is mapped to a Listen state for one
5556                  * hour.
5557                  */
5558                 timeout = 3600;
5559         }
5560         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5561         wpa_s->p2p_long_listen = 0;
5562
5563         /*
5564          * Stop previous find/listen operation to avoid trying to request a new
5565          * remain-on-channel operation while the driver is still running the
5566          * previous one.
5567          */
5568         if (wpa_s->global->p2p)
5569                 p2p_stop_find(wpa_s->global->p2p);
5570
5571         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5572         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5573                 wpa_s->p2p_long_listen = timeout * 1000;
5574                 eloop_register_timeout(timeout, 0,
5575                                        wpas_p2p_long_listen_timeout,
5576                                        wpa_s, NULL);
5577         }
5578
5579         return res;
5580 }
5581
5582
5583 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5584                           u8 *buf, size_t len, int p2p_group)
5585 {
5586         struct wpabuf *p2p_ie;
5587         int ret;
5588
5589         if (wpa_s->global->p2p_disabled)
5590                 return -1;
5591         if (wpa_s->global->p2p == NULL)
5592                 return -1;
5593         if (bss == NULL)
5594                 return -1;
5595
5596         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5597         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5598                                p2p_group, p2p_ie);
5599         wpabuf_free(p2p_ie);
5600
5601         return ret;
5602 }
5603
5604
5605 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5606                           const u8 *dst, const u8 *bssid,
5607                           const u8 *ie, size_t ie_len, int ssi_signal)
5608 {
5609         if (wpa_s->global->p2p_disabled)
5610                 return 0;
5611         if (wpa_s->global->p2p == NULL)
5612                 return 0;
5613
5614         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5615                                  ie, ie_len)) {
5616         case P2P_PREQ_NOT_P2P:
5617                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5618                                  ssi_signal);
5619                 /* fall through */
5620         case P2P_PREQ_MALFORMED:
5621         case P2P_PREQ_NOT_LISTEN:
5622         case P2P_PREQ_NOT_PROCESSED:
5623         default: /* make gcc happy */
5624                 return 0;
5625         case P2P_PREQ_PROCESSED:
5626                 return 1;
5627         }
5628 }
5629
5630
5631 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5632                         const u8 *sa, const u8 *bssid,
5633                         u8 category, const u8 *data, size_t len, int freq)
5634 {
5635         if (wpa_s->global->p2p_disabled)
5636                 return;
5637         if (wpa_s->global->p2p == NULL)
5638                 return;
5639
5640         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5641                       freq);
5642 }
5643
5644
5645 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5646 {
5647         if (wpa_s->global->p2p_disabled)
5648                 return;
5649         if (wpa_s->global->p2p == NULL)
5650                 return;
5651
5652         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5653 }
5654
5655
5656 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5657 {
5658         p2p_group_deinit(wpa_s->p2p_group);
5659         wpa_s->p2p_group = NULL;
5660
5661         wpa_s->ap_configured_cb = NULL;
5662         wpa_s->ap_configured_cb_ctx = NULL;
5663         wpa_s->ap_configured_cb_data = NULL;
5664         wpa_s->connect_without_scan = NULL;
5665 }
5666
5667
5668 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5669 {
5670         wpa_s->p2p_long_listen = 0;
5671
5672         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5673                 return -1;
5674
5675         return p2p_reject(wpa_s->global->p2p, addr);
5676 }
5677
5678
5679 /* Invite to reinvoke a persistent group */
5680 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5681                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5682                     int ht40, int vht, int pref_freq)
5683 {
5684         enum p2p_invite_role role;
5685         u8 *bssid = NULL;
5686         int force_freq = 0;
5687         int res;
5688         int no_pref_freq_given = pref_freq == 0;
5689
5690         wpa_s->global->p2p_invite_group = NULL;
5691         if (peer_addr)
5692                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5693         else
5694                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5695
5696         wpa_s->p2p_persistent_go_freq = freq;
5697         wpa_s->p2p_go_ht40 = !!ht40;
5698         if (ssid->mode == WPAS_MODE_P2P_GO) {
5699                 role = P2P_INVITE_ROLE_GO;
5700                 if (peer_addr == NULL) {
5701                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5702                                    "address in invitation command");
5703                         return -1;
5704                 }
5705                 if (wpas_p2p_create_iface(wpa_s)) {
5706                         if (wpas_p2p_add_group_interface(wpa_s,
5707                                                          WPA_IF_P2P_GO) < 0) {
5708                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5709                                            "allocate a new interface for the "
5710                                            "group");
5711                                 return -1;
5712                         }
5713                         bssid = wpa_s->pending_interface_addr;
5714                 } else
5715                         bssid = wpa_s->own_addr;
5716         } else {
5717                 role = P2P_INVITE_ROLE_CLIENT;
5718                 peer_addr = ssid->bssid;
5719         }
5720         wpa_s->pending_invite_ssid_id = ssid->id;
5721
5722         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5723                                    role == P2P_INVITE_ROLE_GO);
5724         if (res)
5725                 return res;
5726
5727         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5728                 return -1;
5729
5730         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5731             no_pref_freq_given && pref_freq > 0 &&
5732             wpa_s->num_multichan_concurrent > 1 &&
5733             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5734                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5735                            pref_freq);
5736                 pref_freq = 0;
5737         }
5738
5739         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5740                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5741                           1, pref_freq, -1);
5742 }
5743
5744
5745 /* Invite to join an active group */
5746 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5747                           const u8 *peer_addr, const u8 *go_dev_addr)
5748 {
5749         struct wpa_global *global = wpa_s->global;
5750         enum p2p_invite_role role;
5751         u8 *bssid = NULL;
5752         struct wpa_ssid *ssid;
5753         int persistent;
5754         int freq = 0, force_freq = 0, pref_freq = 0;
5755         int res;
5756
5757         wpa_s->p2p_persistent_go_freq = 0;
5758         wpa_s->p2p_go_ht40 = 0;
5759         wpa_s->p2p_go_vht = 0;
5760
5761         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5762                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5763                         break;
5764         }
5765         if (wpa_s == NULL) {
5766                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5767                 return -1;
5768         }
5769
5770         ssid = wpa_s->current_ssid;
5771         if (ssid == NULL) {
5772                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5773                            "invitation");
5774                 return -1;
5775         }
5776
5777         wpa_s->global->p2p_invite_group = wpa_s;
5778         persistent = ssid->p2p_persistent_group &&
5779                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5780                                         ssid->ssid, ssid->ssid_len);
5781
5782         if (ssid->mode == WPAS_MODE_P2P_GO) {
5783                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5784                 bssid = wpa_s->own_addr;
5785                 if (go_dev_addr == NULL)
5786                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5787                 freq = ssid->frequency;
5788         } else {
5789                 role = P2P_INVITE_ROLE_CLIENT;
5790                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5791                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5792                                    "invite to current group");
5793                         return -1;
5794                 }
5795                 bssid = wpa_s->bssid;
5796                 if (go_dev_addr == NULL &&
5797                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5798                         go_dev_addr = wpa_s->go_dev_addr;
5799                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5800                         (int) wpa_s->assoc_freq;
5801         }
5802         wpa_s->parent->pending_invite_ssid_id = -1;
5803
5804         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5805                 return -1;
5806
5807         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5808                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5809         if (res)
5810                 return res;
5811         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5812
5813         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5814                           ssid->ssid, ssid->ssid_len, force_freq,
5815                           go_dev_addr, persistent, pref_freq, -1);
5816 }
5817
5818
5819 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5820 {
5821         struct wpa_ssid *ssid = wpa_s->current_ssid;
5822         const char *ssid_txt;
5823         u8 go_dev_addr[ETH_ALEN];
5824         int network_id = -1;
5825         int persistent;
5826         int freq;
5827         u8 ip[3 * 4];
5828         char ip_addr[100];
5829
5830         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5831                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5832                                      wpa_s->parent, NULL);
5833         }
5834
5835         if (!wpa_s->show_group_started || !ssid)
5836                 return;
5837
5838         wpa_s->show_group_started = 0;
5839
5840         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5841         os_memset(go_dev_addr, 0, ETH_ALEN);
5842         if (ssid->bssid_set)
5843                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5844         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5845                                                ssid->ssid_len);
5846         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5847
5848         if (wpa_s->global->p2p_group_formation == wpa_s)
5849                 wpa_s->global->p2p_group_formation = NULL;
5850
5851         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5852                 (int) wpa_s->assoc_freq;
5853
5854         ip_addr[0] = '\0';
5855         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5856                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5857                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5858                             ip[0], ip[1], ip[2], ip[3],
5859                             ip[4], ip[5], ip[6], ip[7],
5860                             ip[8], ip[9], ip[10], ip[11]);
5861         }
5862
5863         if (ssid->passphrase == NULL && ssid->psk_set) {
5864                 char psk[65];
5865                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5866                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5867                                "%s client ssid=\"%s\" freq=%d psk=%s "
5868                                "go_dev_addr=" MACSTR "%s%s",
5869                                wpa_s->ifname, ssid_txt, freq, psk,
5870                                MAC2STR(go_dev_addr),
5871                                persistent ? " [PERSISTENT]" : "", ip_addr);
5872         } else {
5873                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5874                                "%s client ssid=\"%s\" freq=%d "
5875                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5876                                wpa_s->ifname, ssid_txt, freq,
5877                                ssid->passphrase ? ssid->passphrase : "",
5878                                MAC2STR(go_dev_addr),
5879                                persistent ? " [PERSISTENT]" : "", ip_addr);
5880         }
5881
5882         if (persistent)
5883                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5884                                                              ssid, go_dev_addr);
5885         if (network_id < 0)
5886                 network_id = ssid->id;
5887         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5888 }
5889
5890
5891 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5892                           u32 interval1, u32 duration2, u32 interval2)
5893 {
5894         int ret;
5895
5896         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5897                 return -1;
5898
5899         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5900             wpa_s->current_ssid == NULL ||
5901             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5902                 return -1;
5903
5904         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5905                                wpa_s->own_addr, wpa_s->assoc_freq,
5906                                duration1, interval1, duration2, interval2);
5907         if (ret == 0)
5908                 wpa_s->waiting_presence_resp = 1;
5909
5910         return ret;
5911 }
5912
5913
5914 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5915                         unsigned int interval)
5916 {
5917         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5918                 return -1;
5919
5920         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5921 }
5922
5923
5924 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5925 {
5926         if (wpa_s->current_ssid == NULL) {
5927                 /*
5928                  * current_ssid can be cleared when P2P client interface gets
5929                  * disconnected, so assume this interface was used as P2P
5930                  * client.
5931                  */
5932                 return 1;
5933         }
5934         return wpa_s->current_ssid->p2p_group &&
5935                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5936 }
5937
5938
5939 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5940 {
5941         struct wpa_supplicant *wpa_s = eloop_ctx;
5942
5943         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5944                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5945                            "disabled");
5946                 return;
5947         }
5948
5949         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
5950                    "group");
5951         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
5952 }
5953
5954
5955 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
5956 {
5957         int timeout;
5958
5959         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5960                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5961
5962         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5963                 return;
5964
5965         timeout = wpa_s->conf->p2p_group_idle;
5966         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
5967             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
5968             timeout = P2P_MAX_CLIENT_IDLE;
5969
5970         if (timeout == 0)
5971                 return;
5972
5973         if (timeout < 0) {
5974                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
5975                         timeout = 0; /* special client mode no-timeout */
5976                 else
5977                         return;
5978         }
5979
5980         if (wpa_s->p2p_in_provisioning) {
5981                 /*
5982                  * Use the normal group formation timeout during the
5983                  * provisioning phase to avoid terminating this process too
5984                  * early due to group idle timeout.
5985                  */
5986                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5987                            "during provisioning");
5988                 return;
5989         }
5990
5991         if (wpa_s->show_group_started) {
5992                 /*
5993                  * Use the normal group formation timeout between the end of
5994                  * the provisioning phase and completion of 4-way handshake to
5995                  * avoid terminating this process too early due to group idle
5996                  * timeout.
5997                  */
5998                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5999                            "while waiting for initial 4-way handshake to "
6000                            "complete");
6001                 return;
6002         }
6003
6004         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6005                    timeout);
6006         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6007                                wpa_s, NULL);
6008 }
6009
6010
6011 /* Returns 1 if the interface was removed */
6012 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6013                           u16 reason_code, const u8 *ie, size_t ie_len,
6014                           int locally_generated)
6015 {
6016         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6017                 return 0;
6018
6019         if (!locally_generated)
6020                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6021                                  ie_len);
6022
6023         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6024             wpa_s->current_ssid &&
6025             wpa_s->current_ssid->p2p_group &&
6026             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6027                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6028                            "session is ending");
6029                 if (wpas_p2p_group_delete(wpa_s,
6030                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6031                     > 0)
6032                         return 1;
6033         }
6034
6035         return 0;
6036 }
6037
6038
6039 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6040                              u16 reason_code, const u8 *ie, size_t ie_len,
6041                              int locally_generated)
6042 {
6043         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6044                 return;
6045
6046         if (!locally_generated)
6047                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6048                                    ie_len);
6049 }
6050
6051
6052 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6053 {
6054         struct p2p_data *p2p = wpa_s->global->p2p;
6055
6056         if (p2p == NULL)
6057                 return;
6058
6059         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6060                 return;
6061
6062         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6063                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6064
6065         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6066                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6067
6068         if (wpa_s->wps &&
6069             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6070                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6071
6072         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6073                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6074
6075         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6076                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6077                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6078                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6079                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6080         }
6081
6082         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6083                 p2p_set_sec_dev_types(p2p,
6084                                       (void *) wpa_s->conf->sec_device_type,
6085                                       wpa_s->conf->num_sec_device_types);
6086
6087         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6088                 int i;
6089                 p2p_remove_wps_vendor_extensions(p2p);
6090                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6091                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6092                                 continue;
6093                         p2p_add_wps_vendor_extension(
6094                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6095                 }
6096         }
6097
6098         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6099             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6100                 char country[3];
6101                 country[0] = wpa_s->conf->country[0];
6102                 country[1] = wpa_s->conf->country[1];
6103                 country[2] = 0x04;
6104                 p2p_set_country(p2p, country);
6105         }
6106
6107         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6108                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6109                                      wpa_s->conf->p2p_ssid_postfix ?
6110                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6111                                      0);
6112         }
6113
6114         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6115                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6116
6117         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6118                 u8 reg_class, channel;
6119                 int ret;
6120                 unsigned int r;
6121                 if (wpa_s->conf->p2p_listen_reg_class &&
6122                     wpa_s->conf->p2p_listen_channel) {
6123                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6124                         channel = wpa_s->conf->p2p_listen_channel;
6125                 } else {
6126                         reg_class = 81;
6127                         /*
6128                          * Pick one of the social channels randomly as the
6129                          * listen channel.
6130                          */
6131                         os_get_random((u8 *) &r, sizeof(r));
6132                         channel = 1 + (r % 3) * 5;
6133                 }
6134                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6135                 if (ret)
6136                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6137                                    "failed: %d", ret);
6138         }
6139         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6140                 u8 op_reg_class, op_channel, cfg_op_channel;
6141                 int ret = 0;
6142                 unsigned int r;
6143                 if (wpa_s->conf->p2p_oper_reg_class &&
6144                     wpa_s->conf->p2p_oper_channel) {
6145                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6146                         op_channel = wpa_s->conf->p2p_oper_channel;
6147                         cfg_op_channel = 1;
6148                 } else {
6149                         op_reg_class = 81;
6150                         /*
6151                          * Use random operation channel from (1, 6, 11)
6152                          *if no other preference is indicated.
6153                          */
6154                         os_get_random((u8 *) &r, sizeof(r));
6155                         op_channel = 1 + (r % 3) * 5;
6156                         cfg_op_channel = 0;
6157                 }
6158                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6159                                            cfg_op_channel);
6160                 if (ret)
6161                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6162                                    "failed: %d", ret);
6163         }
6164
6165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6166                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6167                                       wpa_s->conf->p2p_pref_chan) < 0) {
6168                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6169                                    "update failed");
6170                 }
6171
6172                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6173                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6174                                    "update failed");
6175                 }
6176         }
6177 }
6178
6179
6180 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6181                      int duration)
6182 {
6183         if (!wpa_s->ap_iface)
6184                 return -1;
6185         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6186                                    duration);
6187 }
6188
6189
6190 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6191 {
6192         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6193                 return -1;
6194
6195         wpa_s->global->cross_connection = enabled;
6196         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6197
6198         if (!enabled) {
6199                 struct wpa_supplicant *iface;
6200
6201                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6202                 {
6203                         if (iface->cross_connect_enabled == 0)
6204                                 continue;
6205
6206                         iface->cross_connect_enabled = 0;
6207                         iface->cross_connect_in_use = 0;
6208                         wpa_msg_global(iface->parent, MSG_INFO,
6209                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6210                                        iface->ifname,
6211                                        iface->cross_connect_uplink);
6212                 }
6213         }
6214
6215         return 0;
6216 }
6217
6218
6219 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6220 {
6221         struct wpa_supplicant *iface;
6222
6223         if (!uplink->global->cross_connection)
6224                 return;
6225
6226         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6227                 if (!iface->cross_connect_enabled)
6228                         continue;
6229                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6230                     0)
6231                         continue;
6232                 if (iface->ap_iface == NULL)
6233                         continue;
6234                 if (iface->cross_connect_in_use)
6235                         continue;
6236
6237                 iface->cross_connect_in_use = 1;
6238                 wpa_msg_global(iface->parent, MSG_INFO,
6239                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6240                                iface->ifname, iface->cross_connect_uplink);
6241         }
6242 }
6243
6244
6245 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6246 {
6247         struct wpa_supplicant *iface;
6248
6249         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6250                 if (!iface->cross_connect_enabled)
6251                         continue;
6252                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6253                     0)
6254                         continue;
6255                 if (!iface->cross_connect_in_use)
6256                         continue;
6257
6258                 wpa_msg_global(iface->parent, MSG_INFO,
6259                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6260                                iface->ifname, iface->cross_connect_uplink);
6261                 iface->cross_connect_in_use = 0;
6262         }
6263 }
6264
6265
6266 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6267 {
6268         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6269             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6270             wpa_s->cross_connect_disallowed)
6271                 wpas_p2p_disable_cross_connect(wpa_s);
6272         else
6273                 wpas_p2p_enable_cross_connect(wpa_s);
6274         if (!wpa_s->ap_iface &&
6275             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6276                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6277 }
6278
6279
6280 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6281 {
6282         wpas_p2p_disable_cross_connect(wpa_s);
6283         if (!wpa_s->ap_iface &&
6284             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6285                                          wpa_s, NULL))
6286                 wpas_p2p_set_group_idle_timeout(wpa_s);
6287 }
6288
6289
6290 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6291 {
6292         struct wpa_supplicant *iface;
6293
6294         if (!wpa_s->global->cross_connection)
6295                 return;
6296
6297         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6298                 if (iface == wpa_s)
6299                         continue;
6300                 if (iface->drv_flags &
6301                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6302                         continue;
6303                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6304                         continue;
6305
6306                 wpa_s->cross_connect_enabled = 1;
6307                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6308                            sizeof(wpa_s->cross_connect_uplink));
6309                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6310                            "%s to %s whenever uplink is available",
6311                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6312
6313                 if (iface->ap_iface || iface->current_ssid == NULL ||
6314                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6315                     iface->cross_connect_disallowed ||
6316                     iface->wpa_state != WPA_COMPLETED)
6317                         break;
6318
6319                 wpa_s->cross_connect_in_use = 1;
6320                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6321                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6322                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6323                 break;
6324         }
6325 }
6326
6327
6328 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6329 {
6330         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6331             !wpa_s->p2p_in_provisioning)
6332                 return 0; /* not P2P client operation */
6333
6334         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6335                    "session overlap");
6336         if (wpa_s != wpa_s->parent)
6337                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6338         wpas_p2p_group_formation_failed(wpa_s);
6339         return 1;
6340 }
6341
6342
6343 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6344 {
6345         struct p2p_channels chan, cli_chan;
6346
6347         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6348                 return;
6349
6350         os_memset(&chan, 0, sizeof(chan));
6351         os_memset(&cli_chan, 0, sizeof(cli_chan));
6352         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6353                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6354                            "channel list");
6355                 return;
6356         }
6357
6358         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6359 }
6360
6361
6362 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6363                                      struct wpa_scan_results *scan_res)
6364 {
6365         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6366 }
6367
6368
6369 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6370 {
6371         struct wpa_global *global = wpa_s->global;
6372         int found = 0;
6373         const u8 *peer;
6374
6375         if (global->p2p == NULL)
6376                 return -1;
6377
6378         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6379
6380         if (wpa_s->pending_interface_name[0] &&
6381             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6382                 found = 1;
6383
6384         peer = p2p_get_go_neg_peer(global->p2p);
6385         if (peer) {
6386                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6387                            MACSTR, MAC2STR(peer));
6388                 p2p_unauthorize(global->p2p, peer);
6389                 found = 1;
6390         }
6391
6392         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6393                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6394                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6395                 found = 1;
6396         }
6397
6398         if (wpa_s->pending_pd_before_join) {
6399                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6400                 wpa_s->pending_pd_before_join = 0;
6401                 found = 1;
6402         }
6403
6404         wpas_p2p_stop_find(wpa_s);
6405
6406         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6407                 if (wpa_s == global->p2p_group_formation &&
6408                     (wpa_s->p2p_in_provisioning ||
6409                      wpa_s->parent->pending_interface_type ==
6410                      WPA_IF_P2P_CLIENT)) {
6411                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6412                                    "formation found - cancelling",
6413                                    wpa_s->ifname);
6414                         found = 1;
6415                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6416                                              wpa_s->parent, NULL);
6417                         if (wpa_s->p2p_in_provisioning) {
6418                                 wpas_group_formation_completed(wpa_s, 0);
6419                                 break;
6420                         }
6421                         wpas_p2p_group_delete(wpa_s,
6422                                               P2P_GROUP_REMOVAL_REQUESTED);
6423                         break;
6424                 }
6425         }
6426
6427         if (!found) {
6428                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6429                 return -1;
6430         }
6431
6432         return 0;
6433 }
6434
6435
6436 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6437 {
6438         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6439                 return;
6440
6441         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6442                    "being available anymore");
6443         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6444 }
6445
6446
6447 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6448                                    int freq_24, int freq_5, int freq_overall)
6449 {
6450         struct p2p_data *p2p = wpa_s->global->p2p;
6451         if (p2p == NULL)
6452                 return;
6453         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6454 }
6455
6456
6457 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6458 {
6459         u8 peer[ETH_ALEN];
6460         struct p2p_data *p2p = wpa_s->global->p2p;
6461
6462         if (p2p == NULL)
6463                 return -1;
6464
6465         if (hwaddr_aton(addr, peer))
6466                 return -1;
6467
6468         return p2p_unauthorize(p2p, peer);
6469 }
6470
6471
6472 /**
6473  * wpas_p2p_disconnect - Disconnect from a P2P Group
6474  * @wpa_s: Pointer to wpa_supplicant data
6475  * Returns: 0 on success, -1 on failure
6476  *
6477  * This can be used to disconnect from a group in which the local end is a P2P
6478  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6479  * virtual network interface was created for this group, that interface will be
6480  * removed. Otherwise, only the configured P2P group network will be removed
6481  * from the interface.
6482  */
6483 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6484 {
6485
6486         if (wpa_s == NULL)
6487                 return -1;
6488
6489         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6490                 -1 : 0;
6491 }
6492
6493
6494 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6495 {
6496         int ret;
6497
6498         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6499                 return 0;
6500
6501         ret = p2p_in_progress(wpa_s->global->p2p);
6502         if (ret == 0) {
6503                 /*
6504                  * Check whether there is an ongoing WPS provisioning step (or
6505                  * other parts of group formation) on another interface since
6506                  * p2p_in_progress() does not report this to avoid issues for
6507                  * scans during such provisioning step.
6508                  */
6509                 if (wpa_s->global->p2p_group_formation &&
6510                     wpa_s->global->p2p_group_formation != wpa_s) {
6511                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6512                                 "in group formation",
6513                                 wpa_s->global->p2p_group_formation->ifname);
6514                         ret = 1;
6515                 }
6516         }
6517
6518         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6519                 struct os_reltime now;
6520                 os_get_reltime(&now);
6521                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6522                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6523                         /* Wait for the first client has expired */
6524                         wpa_s->global->p2p_go_wait_client.sec = 0;
6525                 } else {
6526                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6527                         ret = 1;
6528                 }
6529         }
6530
6531         return ret;
6532 }
6533
6534
6535 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6536                               struct wpa_ssid *ssid)
6537 {
6538         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6539             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6540                                  wpa_s->parent, NULL) > 0) {
6541                 /**
6542                  * Remove the network by scheduling the group formation
6543                  * timeout to happen immediately. The teardown code
6544                  * needs to be scheduled to run asynch later so that we
6545                  * don't delete data from under ourselves unexpectedly.
6546                  * Calling wpas_p2p_group_formation_timeout directly
6547                  * causes a series of crashes in WPS failure scenarios.
6548                  */
6549                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6550                            "P2P group network getting removed");
6551                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6552                                        wpa_s->parent, NULL);
6553         }
6554 }
6555
6556
6557 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6558                                           const u8 *addr, const u8 *ssid,
6559                                           size_t ssid_len)
6560 {
6561         struct wpa_ssid *s;
6562         size_t i;
6563
6564         for (s = wpa_s->conf->ssid; s; s = s->next) {
6565                 if (s->disabled != 2)
6566                         continue;
6567                 if (ssid &&
6568                     (ssid_len != s->ssid_len ||
6569                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6570                         continue;
6571                 if (addr == NULL) {
6572                         if (s->mode == WPAS_MODE_P2P_GO)
6573                                 return s;
6574                         continue;
6575                 }
6576                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6577                         return s; /* peer is GO in the persistent group */
6578                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6579                         continue;
6580                 for (i = 0; i < s->num_p2p_clients; i++) {
6581                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6582                                       addr, ETH_ALEN) == 0)
6583                                 return s; /* peer is P2P client in persistent
6584                                            * group */
6585                 }
6586         }
6587
6588         return NULL;
6589 }
6590
6591
6592 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6593                                        const u8 *addr)
6594 {
6595         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6596                                  wpa_s->parent, NULL) > 0) {
6597                 /*
6598                  * This can happen if WPS provisioning step is not terminated
6599                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6600                  * peer was able to connect, there is no need to time out group
6601                  * formation after this, though. In addition, this is used with
6602                  * the initial connection wait on the GO as a separate formation
6603                  * timeout and as such, expected to be hit after the initial WPS
6604                  * provisioning step.
6605                  */
6606                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6607         }
6608         if (!wpa_s->p2p_go_group_formation_completed) {
6609                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6610                 wpa_s->p2p_go_group_formation_completed = 1;
6611                 wpa_s->global->p2p_group_formation = NULL;
6612                 wpa_s->p2p_in_provisioning = 0;
6613         }
6614         wpa_s->global->p2p_go_wait_client.sec = 0;
6615         if (addr == NULL)
6616                 return;
6617         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6618 }
6619
6620
6621 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6622                                         int group_added)
6623 {
6624         struct wpa_supplicant *group = wpa_s;
6625         if (wpa_s->global->p2p_group_formation)
6626                 group = wpa_s->global->p2p_group_formation;
6627         wpa_s = wpa_s->parent;
6628         offchannel_send_action_done(wpa_s);
6629         if (group_added)
6630                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6631         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6632         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6633                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6634                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6635                          wpa_s->p2p_persistent_id,
6636                          wpa_s->p2p_pd_before_go_neg,
6637                          wpa_s->p2p_go_ht40,
6638                          wpa_s->p2p_go_vht);
6639 }
6640
6641
6642 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6643 {
6644         if (!wpa_s->p2p_fallback_to_go_neg ||
6645             wpa_s->p2p_in_provisioning <= 5)
6646                 return 0;
6647
6648         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6649                 return 0; /* peer operating as a GO */
6650
6651         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6652                 "fallback to GO Negotiation");
6653         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6654
6655         return 1;
6656 }
6657
6658
6659 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6660 {
6661         struct wpa_supplicant *ifs;
6662
6663         if (wpa_s->wpa_state > WPA_SCANNING) {
6664                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6665                         "concurrent operation",
6666                         P2P_CONCURRENT_SEARCH_DELAY);
6667                 return P2P_CONCURRENT_SEARCH_DELAY;
6668         }
6669
6670         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6671                          radio_list) {
6672                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6673                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6674                                 "delay due to concurrent operation on "
6675                                 "interface %s",
6676                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6677                         return P2P_CONCURRENT_SEARCH_DELAY;
6678                 }
6679         }
6680
6681         return 0;
6682 }
6683
6684
6685 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6686                                      struct wpa_ssid *s, const u8 *addr,
6687                                      int iface_addr)
6688 {
6689         struct psk_list_entry *psk, *tmp;
6690         int changed = 0;
6691
6692         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6693                               list) {
6694                 if ((iface_addr && !psk->p2p &&
6695                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6696                     (!iface_addr && psk->p2p &&
6697                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6698                         wpa_dbg(wpa_s, MSG_DEBUG,
6699                                 "P2P: Remove persistent group PSK list entry for "
6700                                 MACSTR " p2p=%u",
6701                                 MAC2STR(psk->addr), psk->p2p);
6702                         dl_list_del(&psk->list);
6703                         os_free(psk);
6704                         changed++;
6705                 }
6706         }
6707
6708         return changed;
6709 }
6710
6711
6712 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6713                          const u8 *p2p_dev_addr,
6714                          const u8 *psk, size_t psk_len)
6715 {
6716         struct wpa_ssid *ssid = wpa_s->current_ssid;
6717         struct wpa_ssid *persistent;
6718         struct psk_list_entry *p;
6719
6720         if (psk_len != sizeof(p->psk))
6721                 return;
6722
6723         if (p2p_dev_addr) {
6724                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6725                         " p2p_dev_addr=" MACSTR,
6726                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6727                 if (is_zero_ether_addr(p2p_dev_addr))
6728                         p2p_dev_addr = NULL;
6729         } else {
6730                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6731                         MAC2STR(mac_addr));
6732         }
6733
6734         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6735                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6736                 /* To be added to persistent group once created */
6737                 if (wpa_s->global->add_psk == NULL) {
6738                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6739                         if (wpa_s->global->add_psk == NULL)
6740                                 return;
6741                 }
6742                 p = wpa_s->global->add_psk;
6743                 if (p2p_dev_addr) {
6744                         p->p2p = 1;
6745                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6746                 } else {
6747                         p->p2p = 0;
6748                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6749                 }
6750                 os_memcpy(p->psk, psk, psk_len);
6751                 return;
6752         }
6753
6754         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6755                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6756                 return;
6757         }
6758
6759         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6760                                              ssid->ssid_len);
6761         if (!persistent) {
6762                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6763                 return;
6764         }
6765
6766         p = os_zalloc(sizeof(*p));
6767         if (p == NULL)
6768                 return;
6769         if (p2p_dev_addr) {
6770                 p->p2p = 1;
6771                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6772         } else {
6773                 p->p2p = 0;
6774                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6775         }
6776         os_memcpy(p->psk, psk, psk_len);
6777
6778         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS) {
6779                 struct psk_list_entry *last;
6780                 last = dl_list_last(&persistent->psk_list,
6781                                     struct psk_list_entry, list);
6782                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6783                         MACSTR " (p2p=%u) to make room for a new one",
6784                         MAC2STR(last->addr), last->p2p);
6785                 dl_list_del(&last->list);
6786                 os_free(last);
6787         }
6788
6789         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6790                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6791                                   p2p_dev_addr == NULL);
6792         if (p2p_dev_addr) {
6793                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6794                         MACSTR, MAC2STR(p2p_dev_addr));
6795         } else {
6796                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6797                         MAC2STR(mac_addr));
6798         }
6799         dl_list_add(&persistent->psk_list, &p->list);
6800
6801 #ifndef CONFIG_NO_CONFIG_WRITE
6802         if (wpa_s->parent->conf->update_config &&
6803             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6804                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6805 #endif /* CONFIG_NO_CONFIG_WRITE */
6806 }
6807
6808
6809 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6810                                 struct wpa_ssid *s, const u8 *addr,
6811                                 int iface_addr)
6812 {
6813         int res;
6814
6815         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6816         if (res > 0) {
6817 #ifndef CONFIG_NO_CONFIG_WRITE
6818                 if (wpa_s->conf->update_config &&
6819                     wpa_config_write(wpa_s->confname, wpa_s->conf))
6820                         wpa_dbg(wpa_s, MSG_DEBUG,
6821                                 "P2P: Failed to update configuration");
6822 #endif /* CONFIG_NO_CONFIG_WRITE */
6823         }
6824 }
6825
6826
6827 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6828                                       const u8 *peer, int iface_addr)
6829 {
6830         struct hostapd_data *hapd;
6831         struct hostapd_wpa_psk *psk, *prev, *rem;
6832         struct sta_info *sta;
6833
6834         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6835             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6836                 return;
6837
6838         /* Remove per-station PSK entry */
6839         hapd = wpa_s->ap_iface->bss[0];
6840         prev = NULL;
6841         psk = hapd->conf->ssid.wpa_psk;
6842         while (psk) {
6843                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6844                     (!iface_addr &&
6845                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6846                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6847                                 MACSTR " iface_addr=%d",
6848                                 MAC2STR(peer), iface_addr);
6849                         if (prev)
6850                                 prev->next = psk->next;
6851                         else
6852                                 hapd->conf->ssid.wpa_psk = psk->next;
6853                         rem = psk;
6854                         psk = psk->next;
6855                         os_free(rem);
6856                 } else {
6857                         prev = psk;
6858                         psk = psk->next;
6859                 }
6860         }
6861
6862         /* Disconnect from group */
6863         if (iface_addr)
6864                 sta = ap_get_sta(hapd, peer);
6865         else
6866                 sta = ap_get_sta_p2p(hapd, peer);
6867         if (sta) {
6868                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6869                         " (iface_addr=%d) from group",
6870                         MAC2STR(peer), iface_addr);
6871                 hostapd_drv_sta_deauth(hapd, sta->addr,
6872                                        WLAN_REASON_DEAUTH_LEAVING);
6873                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6874         }
6875 }
6876
6877
6878 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6879                             int iface_addr)
6880 {
6881         struct wpa_ssid *s;
6882         struct wpa_supplicant *w;
6883
6884         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6885
6886         /* Remove from any persistent group */
6887         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6888                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6889                         continue;
6890                 if (!iface_addr)
6891                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6892                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6893         }
6894
6895         /* Remove from any operating group */
6896         for (w = wpa_s->global->ifaces; w; w = w->next)
6897                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6898 }
6899
6900
6901 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6902 {
6903         struct wpa_supplicant *wpa_s = eloop_ctx;
6904         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6905 }
6906
6907
6908 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
6909 {
6910         struct wpa_supplicant *wpa_s = eloop_ctx;
6911
6912         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
6913         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
6914 }
6915
6916
6917 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
6918                                         struct wpa_ssid *ssid)
6919 {
6920         struct wpa_supplicant *iface;
6921
6922         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6923                 if (!iface->current_ssid ||
6924                     iface->current_ssid->frequency == freq ||
6925                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
6926                      !iface->current_ssid->p2p_group))
6927                         continue;
6928
6929                 /* Remove the connection with least priority */
6930                 if (!wpas_is_p2p_prioritized(iface)) {
6931                         /* STA connection has priority over existing
6932                          * P2P connection, so remove the interface. */
6933                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
6934                         eloop_register_timeout(0, 0,
6935                                                wpas_p2p_group_freq_conflict,
6936                                                iface, NULL);
6937                         /* If connection in progress is P2P connection, do not
6938                          * proceed for the connection. */
6939                         if (wpa_s == iface)
6940                                 return -1;
6941                         else
6942                                 return 0;
6943                 } else {
6944                         /* P2P connection has priority, disable the STA network
6945                          */
6946                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
6947                                                        ssid);
6948                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
6949                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
6950                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
6951                                   ETH_ALEN);
6952                         /* If P2P connection is in progress, continue
6953                          * connecting...*/
6954                         if (wpa_s == iface)
6955                                 return 0;
6956                         else
6957                                 return -1;
6958                 }
6959         }
6960
6961         return 0;
6962 }
6963
6964
6965 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
6966 {
6967         struct wpa_ssid *ssid = wpa_s->current_ssid;
6968
6969         if (ssid == NULL || !ssid->p2p_group)
6970                 return 0;
6971
6972         if (wpa_s->p2p_last_4way_hs_fail &&
6973             wpa_s->p2p_last_4way_hs_fail == ssid) {
6974                 u8 go_dev_addr[ETH_ALEN];
6975                 struct wpa_ssid *persistent;
6976
6977                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
6978                                               ssid->ssid,
6979                                               ssid->ssid_len) <= 0) {
6980                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
6981                         goto disconnect;
6982                 }
6983
6984                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
6985                         MACSTR, MAC2STR(go_dev_addr));
6986                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
6987                                                      ssid->ssid,
6988                                                      ssid->ssid_len);
6989                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
6990                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
6991                         goto disconnect;
6992                 }
6993                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6994                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
6995                                persistent->id);
6996         disconnect:
6997                 wpa_s->p2p_last_4way_hs_fail = NULL;
6998                 /*
6999                  * Remove the group from a timeout to avoid issues with caller
7000                  * continuing to use the interface if this is on a P2P group
7001                  * interface.
7002                  */
7003                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7004                                        wpa_s, NULL);
7005                 return 1;
7006         }
7007
7008         wpa_s->p2p_last_4way_hs_fail = ssid;
7009         return 0;
7010 }
7011
7012
7013 #ifdef CONFIG_WPS_NFC
7014
7015 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7016                                              struct wpabuf *p2p)
7017 {
7018         struct wpabuf *ret;
7019         size_t wsc_len;
7020
7021         if (p2p == NULL) {
7022                 wpabuf_free(wsc);
7023                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7024                 return NULL;
7025         }
7026
7027         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7028         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7029         if (ret == NULL) {
7030                 wpabuf_free(wsc);
7031                 wpabuf_free(p2p);
7032                 return NULL;
7033         }
7034
7035         wpabuf_put_be16(ret, wsc_len);
7036         if (wsc)
7037                 wpabuf_put_buf(ret, wsc);
7038         wpabuf_put_be16(ret, wpabuf_len(p2p));
7039         wpabuf_put_buf(ret, p2p);
7040
7041         wpabuf_free(wsc);
7042         wpabuf_free(p2p);
7043         wpa_hexdump_buf(MSG_DEBUG,
7044                         "P2P: Generated NFC connection handover message", ret);
7045
7046         if (ndef && ret) {
7047                 struct wpabuf *tmp;
7048                 tmp = ndef_build_p2p(ret);
7049                 wpabuf_free(ret);
7050                 if (tmp == NULL) {
7051                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7052                         return NULL;
7053                 }
7054                 ret = tmp;
7055         }
7056
7057         return ret;
7058 }
7059
7060
7061 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7062                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7063 {
7064         struct wpa_supplicant *iface;
7065
7066         if (go_dev_addr)
7067                 os_memset(go_dev_addr, 0, ETH_ALEN);
7068         if (ssid)
7069                 *ssid = NULL;
7070         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7071                 if (iface->wpa_state < WPA_ASSOCIATING ||
7072                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7073                     !iface->current_ssid->p2p_group ||
7074                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7075                         continue;
7076                 if (ssid)
7077                         *ssid = iface->current_ssid;
7078                 if (go_dev_addr)
7079                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7080                 return iface->assoc_freq;
7081         }
7082         return 0;
7083 }
7084
7085
7086 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7087                                           int ndef)
7088 {
7089         struct wpabuf *wsc, *p2p;
7090         struct wpa_ssid *ssid;
7091         u8 go_dev_addr[ETH_ALEN];
7092         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7093
7094         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7095                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7096                 return NULL;
7097         }
7098
7099         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7100             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7101                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7102                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7103                 return NULL;
7104         }
7105
7106         if (cli_freq == 0) {
7107                 wsc = wps_build_nfc_handover_req_p2p(
7108                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7109         } else
7110                 wsc = NULL;
7111         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7112                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7113                                          ssid ? ssid->ssid_len : 0);
7114
7115         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7116 }
7117
7118
7119 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7120                                           int ndef, int tag)
7121 {
7122         struct wpabuf *wsc, *p2p;
7123         struct wpa_ssid *ssid;
7124         u8 go_dev_addr[ETH_ALEN];
7125         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7126
7127         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7128                 return NULL;
7129
7130         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7131             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7132                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7133                 return NULL;
7134
7135         if (cli_freq == 0) {
7136                 wsc = wps_build_nfc_handover_sel_p2p(
7137                         wpa_s->parent->wps,
7138                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7139                         DEV_PW_NFC_CONNECTION_HANDOVER,
7140                         wpa_s->conf->wps_nfc_dh_pubkey,
7141                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7142         } else
7143                 wsc = NULL;
7144         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7145                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7146                                          ssid ? ssid->ssid_len : 0);
7147
7148         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7149 }
7150
7151
7152 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7153                                    struct p2p_nfc_params *params)
7154 {
7155         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7156                    "connection handover (freq=%d)",
7157                    params->go_freq);
7158
7159         if (params->go_freq && params->go_ssid_len) {
7160                 wpa_s->p2p_wps_method = WPS_NFC;
7161                 wpa_s->pending_join_wps_method = WPS_NFC;
7162                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7163                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7164                           ETH_ALEN);
7165                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7166                                            params->go_ssid,
7167                                            params->go_ssid_len);
7168         }
7169
7170         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7171                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7172                                 params->go_freq, -1, 0, 1, 1);
7173 }
7174
7175
7176 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7177                                   struct p2p_nfc_params *params, int tag)
7178 {
7179         int res, persistent;
7180         struct wpa_ssid *ssid;
7181
7182         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7183                    "connection handover");
7184         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7185                 ssid = wpa_s->current_ssid;
7186                 if (ssid == NULL)
7187                         continue;
7188                 if (ssid->mode != WPAS_MODE_P2P_GO)
7189                         continue;
7190                 if (wpa_s->ap_iface == NULL)
7191                         continue;
7192                 break;
7193         }
7194         if (wpa_s == NULL) {
7195                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7196                 return -1;
7197         }
7198
7199         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7200             DEV_PW_NFC_CONNECTION_HANDOVER &&
7201             !wpa_s->parent->p2p_oob_dev_pw) {
7202                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7203                 return -1;
7204         }
7205         res = wpas_ap_wps_add_nfc_pw(
7206                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7207                 wpa_s->parent->p2p_oob_dev_pw,
7208                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7209                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7210         if (res)
7211                 return res;
7212
7213         if (!tag) {
7214                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7215                 return 0;
7216         }
7217
7218         if (!params->peer ||
7219             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7220                 return 0;
7221
7222         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7223                    " to join", MAC2STR(params->peer->p2p_device_addr));
7224
7225         wpa_s->global->p2p_invite_group = wpa_s;
7226         persistent = ssid->p2p_persistent_group &&
7227                 wpas_p2p_get_persistent(wpa_s->parent,
7228                                         params->peer->p2p_device_addr,
7229                                         ssid->ssid, ssid->ssid_len);
7230         wpa_s->parent->pending_invite_ssid_id = -1;
7231
7232         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7233                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7234                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7235                           wpa_s->global->p2p_dev_addr, persistent, 0,
7236                           wpa_s->parent->p2p_oob_dev_pw_id);
7237 }
7238
7239
7240 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7241                                     struct p2p_nfc_params *params,
7242                                     int forced_freq)
7243 {
7244         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7245                    "connection handover");
7246         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7247                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7248                                 forced_freq, -1, 0, 1, 1);
7249 }
7250
7251
7252 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7253                                     struct p2p_nfc_params *params,
7254                                     int forced_freq)
7255 {
7256         int res;
7257
7258         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7259                    "connection handover");
7260         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7261                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7262                                forced_freq, -1, 0, 1, 1);
7263         if (res)
7264                 return res;
7265
7266         res = wpas_p2p_listen(wpa_s, 60);
7267         if (res) {
7268                 p2p_unauthorize(wpa_s->global->p2p,
7269                                 params->peer->p2p_device_addr);
7270         }
7271
7272         return res;
7273 }
7274
7275
7276 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7277                                             const struct wpabuf *data,
7278                                             int sel, int tag, int forced_freq)
7279 {
7280         const u8 *pos, *end;
7281         u16 len, id;
7282         struct p2p_nfc_params params;
7283         int res;
7284
7285         os_memset(&params, 0, sizeof(params));
7286         params.sel = sel;
7287
7288         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7289
7290         pos = wpabuf_head(data);
7291         end = pos + wpabuf_len(data);
7292
7293         if (end - pos < 2) {
7294                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7295                            "attributes");
7296                 return -1;
7297         }
7298         len = WPA_GET_BE16(pos);
7299         pos += 2;
7300         if (pos + len > end) {
7301                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7302                            "attributes");
7303                 return -1;
7304         }
7305         params.wsc_attr = pos;
7306         params.wsc_len = len;
7307         pos += len;
7308
7309         if (end - pos < 2) {
7310                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7311                            "attributes");
7312                 return -1;
7313         }
7314         len = WPA_GET_BE16(pos);
7315         pos += 2;
7316         if (pos + len > end) {
7317                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7318                            "attributes");
7319                 return -1;
7320         }
7321         params.p2p_attr = pos;
7322         params.p2p_len = len;
7323         pos += len;
7324
7325         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7326                     params.wsc_attr, params.wsc_len);
7327         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7328                     params.p2p_attr, params.p2p_len);
7329         if (pos < end) {
7330                 wpa_hexdump(MSG_DEBUG,
7331                             "P2P: Ignored extra data after P2P attributes",
7332                             pos, end - pos);
7333         }
7334
7335         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7336         if (res)
7337                 return res;
7338
7339         if (params.next_step == NO_ACTION)
7340                 return 0;
7341
7342         if (params.next_step == BOTH_GO) {
7343                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7344                         MAC2STR(params.peer->p2p_device_addr));
7345                 return 0;
7346         }
7347
7348         if (params.next_step == PEER_CLIENT) {
7349                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7350                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7351                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7352                                 " ssid=\"%s\"",
7353                                 MAC2STR(params.peer->p2p_device_addr),
7354                                 params.go_freq,
7355                                 MAC2STR(params.go_dev_addr),
7356                                 wpa_ssid_txt(params.go_ssid,
7357                                              params.go_ssid_len));
7358                 } else {
7359                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7360                                 "peer=" MACSTR " freq=%d",
7361                                 MAC2STR(params.peer->p2p_device_addr),
7362                                 params.go_freq);
7363                 }
7364                 return 0;
7365         }
7366
7367         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7368                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7369                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7370                 return 0;
7371         }
7372
7373         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7374         wpa_s->p2p_oob_dev_pw = NULL;
7375
7376         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7377                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7378                            "received");
7379                 return -1;
7380         }
7381
7382         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7383         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7384         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7385                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7386         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7387                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7388         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7389
7390         if (tag) {
7391                 if (id < 0x10) {
7392                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7393                                    "peer OOB Device Password Id %u", id);
7394                         return -1;
7395                 }
7396                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7397                            "Device Password Id %u", id);
7398                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7399                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7400                                 params.oob_dev_pw_len -
7401                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7402                 wpa_s->p2p_oob_dev_pw_id = id;
7403                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7404                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7405                         params.oob_dev_pw_len -
7406                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7407                 if (wpa_s->p2p_oob_dev_pw == NULL)
7408                         return -1;
7409
7410                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7411                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7412                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7413                         return -1;
7414         } else {
7415                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7416                            "without Device Password");
7417                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7418         }
7419
7420         switch (params.next_step) {
7421         case NO_ACTION:
7422         case BOTH_GO:
7423         case PEER_CLIENT:
7424                 /* already covered above */
7425                 return 0;
7426         case JOIN_GROUP:
7427                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7428         case AUTH_JOIN:
7429                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7430         case INIT_GO_NEG:
7431                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7432         case RESP_GO_NEG:
7433                 /* TODO: use own OOB Dev Pw */
7434                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7435         }
7436
7437         return -1;
7438 }
7439
7440
7441 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7442                              const struct wpabuf *data, int forced_freq)
7443 {
7444         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7445                 return -1;
7446
7447         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7448 }
7449
7450
7451 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7452                                  const struct wpabuf *req,
7453                                  const struct wpabuf *sel, int forced_freq)
7454 {
7455         struct wpabuf *tmp;
7456         int ret;
7457
7458         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7459                 return -1;
7460
7461         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7462
7463         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7464                           wpabuf_head(req), wpabuf_len(req));
7465         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7466                           wpabuf_head(sel), wpabuf_len(sel));
7467         if (forced_freq)
7468                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7469         tmp = ndef_parse_p2p(init ? sel : req);
7470         if (tmp == NULL) {
7471                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7472                 return -1;
7473         }
7474
7475         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7476                                                forced_freq);
7477         wpabuf_free(tmp);
7478
7479         return ret;
7480 }
7481
7482
7483 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7484 {
7485         const u8 *if_addr;
7486         int go_intent = wpa_s->conf->p2p_go_intent;
7487         struct wpa_supplicant *iface;
7488
7489         if (wpa_s->global->p2p == NULL)
7490                 return -1;
7491
7492         if (!enabled) {
7493                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7494                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7495                 {
7496                         if (!iface->ap_iface)
7497                                 continue;
7498                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7499                 }
7500                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7501                                                  0, NULL);
7502                 if (wpa_s->p2p_nfc_tag_enabled)
7503                         wpas_p2p_remove_pending_group_interface(wpa_s);
7504                 wpa_s->p2p_nfc_tag_enabled = 0;
7505                 return 0;
7506         }
7507
7508         if (wpa_s->global->p2p_disabled)
7509                 return -1;
7510
7511         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7512             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7513             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7514             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7515                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7516                            "to allow static handover cases");
7517                 return -1;
7518         }
7519
7520         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7521
7522         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7523         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7524         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7525         if (wpa_s->p2p_oob_dev_pw == NULL)
7526                 return -1;
7527         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7528
7529         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7530
7531         if (wpa_s->create_p2p_iface) {
7532                 enum wpa_driver_if_type iftype;
7533                 /* Prepare to add a new interface for the group */
7534                 iftype = WPA_IF_P2P_GROUP;
7535                 if (go_intent == 15)
7536                         iftype = WPA_IF_P2P_GO;
7537                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7538                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7539                                    "interface for the group");
7540                         return -1;
7541                 }
7542
7543                 if_addr = wpa_s->pending_interface_addr;
7544         } else
7545                 if_addr = wpa_s->own_addr;
7546
7547         wpa_s->p2p_nfc_tag_enabled = enabled;
7548
7549         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7550                 struct hostapd_data *hapd;
7551                 if (iface->ap_iface == NULL)
7552                         continue;
7553                 hapd = iface->ap_iface->bss[0];
7554                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7555                 hapd->conf->wps_nfc_dh_pubkey =
7556                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7557                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7558                 hapd->conf->wps_nfc_dh_privkey =
7559                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7560                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7561                 hapd->conf->wps_nfc_dev_pw =
7562                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7563                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7564
7565                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7566                         wpa_dbg(iface, MSG_DEBUG,
7567                                 "P2P: Failed to enable NFC Tag for GO");
7568                 }
7569         }
7570         p2p_set_authorized_oob_dev_pw_id(
7571                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7572                 if_addr);
7573
7574         return 0;
7575 }
7576
7577 #endif /* CONFIG_WPS_NFC */