wpa_supplicant/p2p_supplicant.c

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