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 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3688 {
3689         struct wpa_supplicant *wpa_s = ctx;
3690
3691         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3692                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3693                 if (ssid == NULL)
3694                         continue;
3695                 if (ssid->mode != WPAS_MODE_INFRA)
3696                         continue;
3697                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3698                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3699                         continue;
3700                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3701                         return 1;
3702         }
3703
3704         return 0;
3705 }
3706
3707
3708 static int wpas_is_concurrent_session_active(void *ctx)
3709 {
3710         struct wpa_supplicant *wpa_s = ctx;
3711         struct wpa_supplicant *ifs;
3712
3713         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3714                 if (ifs == wpa_s)
3715                         continue;
3716                 if (ifs->wpa_state > WPA_ASSOCIATED)
3717                         return 1;
3718         }
3719         return 0;
3720 }
3721
3722
3723 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3724 {
3725         struct wpa_supplicant *wpa_s = ctx;
3726         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3727 }
3728
3729
3730 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3731 {
3732         struct wpa_interface iface;
3733         struct wpa_supplicant *p2pdev_wpa_s;
3734         char ifname[100];
3735         char force_name[100];
3736         int ret;
3737
3738         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3739                     wpa_s->ifname);
3740         force_name[0] = '\0';
3741         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3742         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3743                              force_name, wpa_s->pending_interface_addr, NULL);
3744         if (ret < 0) {
3745                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3746                 return ret;
3747         }
3748         os_strlcpy(wpa_s->pending_interface_name, ifname,
3749                    sizeof(wpa_s->pending_interface_name));
3750
3751         os_memset(&iface, 0, sizeof(iface));
3752         iface.p2p_mgmt = 1;
3753         iface.ifname = wpa_s->pending_interface_name;
3754         iface.driver = wpa_s->driver->name;
3755         iface.driver_param = wpa_s->conf->driver_param;
3756
3757         /*
3758          * If a P2P Device configuration file was given, use it as the interface
3759          * configuration file (instead of using parent's configuration file.
3760          */
3761         if (wpa_s->conf_p2p_dev) {
3762                 iface.confname = wpa_s->conf_p2p_dev;
3763                 iface.ctrl_interface = NULL;
3764         } else {
3765                 iface.confname = wpa_s->confname;
3766                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3767         }
3768         iface.conf_p2p_dev = NULL;
3769
3770         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3771         if (!p2pdev_wpa_s) {
3772                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3773                 return -1;
3774         }
3775         p2pdev_wpa_s->parent = wpa_s;
3776
3777         wpa_s->pending_interface_name[0] = '\0';
3778         return 0;
3779 }
3780
3781
3782 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3783                                const u8 *noa, size_t noa_len)
3784 {
3785         struct wpa_supplicant *wpa_s, *intf = ctx;
3786         char hex[100];
3787
3788         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3789                 if (wpa_s->waiting_presence_resp)
3790                         break;
3791         }
3792         if (!wpa_s) {
3793                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3794                 return;
3795         }
3796         wpa_s->waiting_presence_resp = 0;
3797
3798         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3799         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3800                 " status=%u noa=%s", MAC2STR(src), status, hex);
3801 }
3802
3803
3804 static int _wpas_p2p_in_progress(void *ctx)
3805 {
3806         struct wpa_supplicant *wpa_s = ctx;
3807         return wpas_p2p_in_progress(wpa_s);
3808 }
3809
3810
3811 /**
3812  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3813  * @global: Pointer to global data from wpa_supplicant_init()
3814  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3815  * Returns: 0 on success, -1 on failure
3816  */
3817 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3818 {
3819         struct p2p_config p2p;
3820         unsigned int r;
3821         int i;
3822
3823         if (wpa_s->conf->p2p_disabled)
3824                 return 0;
3825
3826         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3827                 return 0;
3828
3829         if (global->p2p)
3830                 return 0;
3831
3832         os_memset(&p2p, 0, sizeof(p2p));
3833         p2p.cb_ctx = wpa_s;
3834         p2p.debug_print = wpas_p2p_debug_print;
3835         p2p.p2p_scan = wpas_p2p_scan;
3836         p2p.send_action = wpas_send_action;
3837         p2p.send_action_done = wpas_send_action_done;
3838         p2p.go_neg_completed = wpas_go_neg_completed;
3839         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3840         p2p.dev_found = wpas_dev_found;
3841         p2p.dev_lost = wpas_dev_lost;
3842         p2p.find_stopped = wpas_find_stopped;
3843         p2p.start_listen = wpas_start_listen;
3844         p2p.stop_listen = wpas_stop_listen;
3845         p2p.send_probe_resp = wpas_send_probe_resp;
3846         p2p.sd_request = wpas_sd_request;
3847         p2p.sd_response = wpas_sd_response;
3848         p2p.prov_disc_req = wpas_prov_disc_req;
3849         p2p.prov_disc_resp = wpas_prov_disc_resp;
3850         p2p.prov_disc_fail = wpas_prov_disc_fail;
3851         p2p.invitation_process = wpas_invitation_process;
3852         p2p.invitation_received = wpas_invitation_received;
3853         p2p.invitation_result = wpas_invitation_result;
3854         p2p.get_noa = wpas_get_noa;
3855         p2p.go_connected = wpas_go_connected;
3856         p2p.presence_resp = wpas_presence_resp;
3857         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3858         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3859
3860         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3861         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3862         p2p.dev_name = wpa_s->conf->device_name;
3863         p2p.manufacturer = wpa_s->conf->manufacturer;
3864         p2p.model_name = wpa_s->conf->model_name;
3865         p2p.model_number = wpa_s->conf->model_number;
3866         p2p.serial_number = wpa_s->conf->serial_number;
3867         if (wpa_s->wps) {
3868                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3869                 p2p.config_methods = wpa_s->wps->config_methods;
3870         }
3871
3872         if (wpa_s->conf->p2p_listen_reg_class &&
3873             wpa_s->conf->p2p_listen_channel) {
3874                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3875                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3876                 p2p.channel_forced = 1;
3877         } else {
3878                 p2p.reg_class = 81;
3879                 /*
3880                  * Pick one of the social channels randomly as the listen
3881                  * channel.
3882                  */
3883                 os_get_random((u8 *) &r, sizeof(r));
3884                 p2p.channel = 1 + (r % 3) * 5;
3885                 p2p.channel_forced = 0;
3886         }
3887         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3888
3889         if (wpa_s->conf->p2p_oper_reg_class &&
3890             wpa_s->conf->p2p_oper_channel) {
3891                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3892                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3893                 p2p.cfg_op_channel = 1;
3894                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3895                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3896
3897         } else {
3898                 p2p.op_reg_class = 81;
3899                 /*
3900                  * Use random operation channel from (1, 6, 11) if no other
3901                  * preference is indicated.
3902                  */
3903                 os_get_random((u8 *) &r, sizeof(r));
3904                 p2p.op_channel = 1 + (r % 3) * 5;
3905                 p2p.cfg_op_channel = 0;
3906                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3907                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3908         }
3909
3910         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3911                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3912                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3913         }
3914
3915         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3916                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3917                 p2p.country[2] = 0x04;
3918         } else
3919                 os_memcpy(p2p.country, "XX\x04", 3);
3920
3921         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3922                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3923                            "channel list");
3924                 return -1;
3925         }
3926
3927         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3928                   WPS_DEV_TYPE_LEN);
3929
3930         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3931         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3932                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3933
3934         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3935                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3936
3937         p2p.max_peers = 100;
3938
3939         if (wpa_s->conf->p2p_ssid_postfix) {
3940                 p2p.ssid_postfix_len =
3941                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3942                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3943                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3944                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3945                           p2p.ssid_postfix_len);
3946         }
3947
3948         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3949
3950         p2p.max_listen = wpa_s->max_remain_on_chan;
3951
3952         global->p2p = p2p_init(&p2p);
3953         if (global->p2p == NULL)
3954                 return -1;
3955         global->p2p_init_wpa_s = wpa_s;
3956
3957         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3958                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3959                         continue;
3960                 p2p_add_wps_vendor_extension(
3961                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3962         }
3963
3964         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3965
3966         return 0;
3967 }
3968
3969
3970 /**
3971  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3972  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3973  *
3974  * This function deinitialize per-interface P2P data.
3975  */
3976 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3977 {
3978         if (wpa_s->driver && wpa_s->drv_priv)
3979                 wpa_drv_probe_req_report(wpa_s, 0);
3980
3981         if (wpa_s->go_params) {
3982                 /* Clear any stored provisioning info */
3983                 p2p_clear_provisioning_info(
3984                         wpa_s->global->p2p,
3985                         wpa_s->go_params->peer_device_addr);
3986         }
3987
3988         os_free(wpa_s->go_params);
3989         wpa_s->go_params = NULL;
3990         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
3991         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3992         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3993         wpa_s->p2p_long_listen = 0;
3994         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3995         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3996         wpas_p2p_remove_pending_group_interface(wpa_s);
3997         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3998         wpas_p2p_listen_work_done(wpa_s);
3999         if (wpa_s->p2p_send_action_work) {
4000                 os_free(wpa_s->p2p_send_action_work->ctx);
4001                 radio_work_done(wpa_s->p2p_send_action_work);
4002                 wpa_s->p2p_send_action_work = NULL;
4003         }
4004         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4005
4006         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4007         wpa_s->p2p_oob_dev_pw = NULL;
4008
4009         /* TODO: remove group interface from the driver if this wpa_s instance
4010          * is on top of a P2P group interface */
4011 }
4012
4013
4014 /**
4015  * wpas_p2p_deinit_global - Deinitialize global P2P module
4016  * @global: Pointer to global data from wpa_supplicant_init()
4017  *
4018  * This function deinitializes the global (per device) P2P module.
4019  */
4020 static void wpas_p2p_deinit_global(struct wpa_global *global)
4021 {
4022         struct wpa_supplicant *wpa_s, *tmp;
4023
4024         wpa_s = global->ifaces;
4025         if (wpa_s)
4026                 wpas_p2p_service_flush(wpa_s);
4027
4028         if (global->p2p == NULL)
4029                 return;
4030
4031         /* Remove remaining P2P group interfaces */
4032         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4033                 wpa_s = wpa_s->next;
4034         while (wpa_s) {
4035                 tmp = global->ifaces;
4036                 while (tmp &&
4037                        (tmp == wpa_s ||
4038                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4039                         tmp = tmp->next;
4040                 }
4041                 if (tmp == NULL)
4042                         break;
4043                 /* Disconnect from the P2P group and deinit the interface */
4044                 wpas_p2p_disconnect(tmp);
4045         }
4046
4047         /*
4048          * Deinit GO data on any possibly remaining interface (if main
4049          * interface is used as GO).
4050          */
4051         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4052                 if (wpa_s->ap_iface)
4053                         wpas_p2p_group_deinit(wpa_s);
4054         }
4055
4056         p2p_deinit(global->p2p);
4057         global->p2p = NULL;
4058         global->p2p_init_wpa_s = NULL;
4059 }
4060
4061
4062 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4063 {
4064         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4065             wpa_s->conf->p2p_no_group_iface)
4066                 return 0; /* separate interface disabled per configuration */
4067         if (wpa_s->drv_flags &
4068             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4069              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4070                 return 1; /* P2P group requires a new interface in every case
4071                            */
4072         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4073                 return 0; /* driver does not support concurrent operations */
4074         if (wpa_s->global->ifaces->next)
4075                 return 1; /* more that one interface already in use */
4076         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4077                 return 1; /* this interface is already in use */
4078         return 0;
4079 }
4080
4081
4082 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4083                                  const u8 *peer_addr,
4084                                  enum p2p_wps_method wps_method,
4085                                  int go_intent, const u8 *own_interface_addr,
4086                                  unsigned int force_freq, int persistent_group,
4087                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4088 {
4089         if (persistent_group && wpa_s->conf->persistent_reconnect)
4090                 persistent_group = 2;
4091
4092         /*
4093          * Increase GO config timeout if HT40 is used since it takes some time
4094          * to scan channels for coex purposes before the BSS can be started.
4095          */
4096         p2p_set_config_timeout(wpa_s->global->p2p,
4097                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4098
4099         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4100                            go_intent, own_interface_addr, force_freq,
4101                            persistent_group, ssid ? ssid->ssid : NULL,
4102                            ssid ? ssid->ssid_len : 0,
4103                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4104                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4105                            0);
4106 }
4107
4108
4109 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4110                                 const u8 *peer_addr,
4111                                 enum p2p_wps_method wps_method,
4112                                 int go_intent, const u8 *own_interface_addr,
4113                                 unsigned int force_freq, int persistent_group,
4114                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4115 {
4116         if (persistent_group && wpa_s->conf->persistent_reconnect)
4117                 persistent_group = 2;
4118
4119         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4120                              go_intent, own_interface_addr, force_freq,
4121                              persistent_group, ssid ? ssid->ssid : NULL,
4122                              ssid ? ssid->ssid_len : 0, pref_freq,
4123                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4124                              0);
4125 }
4126
4127
4128 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4129 {
4130         wpa_s->p2p_join_scan_count++;
4131         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4132                    wpa_s->p2p_join_scan_count);
4133         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4134                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4135                            " for join operationg - stop join attempt",
4136                            MAC2STR(wpa_s->pending_join_iface_addr));
4137                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4138                 if (wpa_s->p2p_auto_pd) {
4139                         wpa_s->p2p_auto_pd = 0;
4140                         wpa_msg_global(wpa_s, MSG_INFO,
4141                                        P2P_EVENT_PROV_DISC_FAILURE
4142                                        " p2p_dev_addr=" MACSTR " status=N/A",
4143                                        MAC2STR(wpa_s->pending_join_dev_addr));
4144                         return;
4145                 }
4146                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4147                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4148         }
4149 }
4150
4151
4152 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4153 {
4154         int res;
4155         unsigned int num, i;
4156         struct wpa_used_freq_data *freqs;
4157
4158         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4159                 /* Multiple channels are supported and not all are in use */
4160                 return 0;
4161         }
4162
4163         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4164                           sizeof(struct wpa_used_freq_data));
4165         if (!freqs)
4166                 return 1;
4167
4168         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4169                                         wpa_s->num_multichan_concurrent);
4170
4171         for (i = 0; i < num; i++) {
4172                 if (freqs[i].freq == freq) {
4173                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4174                                    freq);
4175                         res = 0;
4176                         goto exit_free;
4177                 }
4178         }
4179
4180         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4181         res = 1;
4182
4183 exit_free:
4184         os_free(freqs);
4185         return res;
4186 }
4187
4188
4189 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4190                             const u8 *peer_dev_addr)
4191 {
4192         struct wpa_bss *bss;
4193         int updated;
4194
4195         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4196         if (bss == NULL)
4197                 return -1;
4198         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4199                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4200                            "last scan");
4201                 return 0;
4202         }
4203
4204         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4205                                     &bss->last_update);
4206         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4207                    "%ld.%06ld (%supdated in last scan)",
4208                    bss->last_update.sec, bss->last_update.usec,
4209                    updated ? "": "not ");
4210
4211         return updated;
4212 }
4213
4214
4215 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4216                                    struct wpa_scan_results *scan_res)
4217 {
4218         struct wpa_bss *bss = NULL;
4219         int freq;
4220         u8 iface_addr[ETH_ALEN];
4221
4222         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4223
4224         if (wpa_s->global->p2p_disabled)
4225                 return;
4226
4227         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4228                    scan_res ? (int) scan_res->num : -1,
4229                    wpa_s->p2p_auto_join ? "auto_" : "");
4230
4231         if (scan_res)
4232                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4233
4234         if (wpa_s->p2p_auto_pd) {
4235                 int join = wpas_p2p_peer_go(wpa_s,
4236                                             wpa_s->pending_join_dev_addr);
4237                 if (join == 0 &&
4238                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4239                         wpa_s->auto_pd_scan_retry++;
4240                         bss = wpa_bss_get_bssid_latest(
4241                                 wpa_s, wpa_s->pending_join_dev_addr);
4242                         if (bss) {
4243                                 freq = bss->freq;
4244                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4245                                            "the peer " MACSTR " at %d MHz",
4246                                            wpa_s->auto_pd_scan_retry,
4247                                            MAC2STR(wpa_s->
4248                                                    pending_join_dev_addr),
4249                                            freq);
4250                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4251                                 return;
4252                         }
4253                 }
4254
4255                 if (join < 0)
4256                         join = 0;
4257
4258                 wpa_s->p2p_auto_pd = 0;
4259                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4260                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4261                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4262                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4263                                       wpa_s->pending_join_dev_addr,
4264                                       wpa_s->pending_pd_config_methods, join,
4265                                       0, wpa_s->user_initiated_pd) < 0) {
4266                         wpa_s->p2p_auto_pd = 0;
4267                         wpa_msg_global(wpa_s, MSG_INFO,
4268                                        P2P_EVENT_PROV_DISC_FAILURE
4269                                        " p2p_dev_addr=" MACSTR " status=N/A",
4270                                        MAC2STR(wpa_s->pending_join_dev_addr));
4271                 }
4272                 return;
4273         }
4274
4275         if (wpa_s->p2p_auto_join) {
4276                 int join = wpas_p2p_peer_go(wpa_s,
4277                                             wpa_s->pending_join_dev_addr);
4278                 if (join < 0) {
4279                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4280                                    "running a GO -> use GO Negotiation");
4281                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4282                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4283                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4284                                          wpa_s->p2p_go_intent,
4285                                          wpa_s->p2p_connect_freq,
4286                                          wpa_s->p2p_persistent_id,
4287                                          wpa_s->p2p_pd_before_go_neg,
4288                                          wpa_s->p2p_go_ht40,
4289                                          wpa_s->p2p_go_vht);
4290                         return;
4291                 }
4292
4293                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4294                            "try to join the group", join ? "" :
4295                            " in older scan");
4296                 if (!join)
4297                         wpa_s->p2p_fallback_to_go_neg = 1;
4298         }
4299
4300         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4301                                  wpa_s->pending_join_iface_addr);
4302         if (freq < 0 &&
4303             p2p_get_interface_addr(wpa_s->global->p2p,
4304                                    wpa_s->pending_join_dev_addr,
4305                                    iface_addr) == 0 &&
4306             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4307         {
4308                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4309                            "address for join from " MACSTR " to " MACSTR
4310                            " based on newly discovered P2P peer entry",
4311                            MAC2STR(wpa_s->pending_join_iface_addr),
4312                            MAC2STR(iface_addr));
4313                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4314                           ETH_ALEN);
4315
4316                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4317                                          wpa_s->pending_join_iface_addr);
4318         }
4319         if (freq >= 0) {
4320                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4321                            "from P2P peer table: %d MHz", freq);
4322         }
4323         if (wpa_s->p2p_join_ssid_len) {
4324                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4325                            MACSTR " and SSID %s",
4326                            MAC2STR(wpa_s->pending_join_iface_addr),
4327                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4328                                         wpa_s->p2p_join_ssid_len));
4329                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4330                                   wpa_s->p2p_join_ssid,
4331                                   wpa_s->p2p_join_ssid_len);
4332         }
4333         if (!bss) {
4334                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4335                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4336                 bss = wpa_bss_get_bssid_latest(wpa_s,
4337                                                wpa_s->pending_join_iface_addr);
4338         }
4339         if (bss) {
4340                 freq = bss->freq;
4341                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4342                            "from BSS table: %d MHz (SSID %s)", freq,
4343                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4344         }
4345         if (freq > 0) {
4346                 u16 method;
4347
4348                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4349                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4350                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4351                                        "reason=FREQ_CONFLICT");
4352                         return;
4353                 }
4354
4355                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4356                            "prior to joining an existing group (GO " MACSTR
4357                            " freq=%u MHz)",
4358                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4359                 wpa_s->pending_pd_before_join = 1;
4360
4361                 switch (wpa_s->pending_join_wps_method) {
4362                 case WPS_PIN_DISPLAY:
4363                         method = WPS_CONFIG_KEYPAD;
4364                         break;
4365                 case WPS_PIN_KEYPAD:
4366                         method = WPS_CONFIG_DISPLAY;
4367                         break;
4368                 case WPS_PBC:
4369                         method = WPS_CONFIG_PUSHBUTTON;
4370                         break;
4371                 default:
4372                         method = 0;
4373                         break;
4374                 }
4375
4376                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4377                                                wpa_s->pending_join_dev_addr) ==
4378                      method)) {
4379                         /*
4380                          * We have already performed provision discovery for
4381                          * joining the group. Proceed directly to join
4382                          * operation without duplicated provision discovery. */
4383                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4384                                    "with " MACSTR " already done - proceed to "
4385                                    "join",
4386                                    MAC2STR(wpa_s->pending_join_dev_addr));
4387                         wpa_s->pending_pd_before_join = 0;
4388                         goto start;
4389                 }
4390
4391                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4392                                       wpa_s->pending_join_dev_addr, method, 1,
4393                                       freq, wpa_s->user_initiated_pd) < 0) {
4394                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4395                                    "Discovery Request before joining an "
4396                                    "existing group");
4397                         wpa_s->pending_pd_before_join = 0;
4398                         goto start;
4399                 }
4400                 return;
4401         }
4402
4403         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4404         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4405         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4406         wpas_p2p_check_join_scan_limit(wpa_s);
4407         return;
4408
4409 start:
4410         /* Start join operation immediately */
4411         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4412 }
4413
4414
4415 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4416                                    const u8 *ssid, size_t ssid_len)
4417 {
4418         int ret;
4419         struct wpa_driver_scan_params params;
4420         struct wpabuf *wps_ie, *ies;
4421         size_t ielen;
4422         int freqs[2] = { 0, 0 };
4423
4424         os_memset(&params, 0, sizeof(params));
4425
4426         /* P2P Wildcard SSID */
4427         params.num_ssids = 1;
4428         if (ssid && ssid_len) {
4429                 params.ssids[0].ssid = ssid;
4430                 params.ssids[0].ssid_len = ssid_len;
4431                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4432                 wpa_s->p2p_join_ssid_len = ssid_len;
4433         } else {
4434                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4435                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4436                 wpa_s->p2p_join_ssid_len = 0;
4437         }
4438
4439         wpa_s->wps->dev.p2p = 1;
4440         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4441                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4442                                         NULL);
4443         if (wps_ie == NULL) {
4444                 wpas_p2p_scan_res_join(wpa_s, NULL);
4445                 return;
4446         }
4447
4448         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4449         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4450         if (ies == NULL) {
4451                 wpabuf_free(wps_ie);
4452                 wpas_p2p_scan_res_join(wpa_s, NULL);
4453                 return;
4454         }
4455         wpabuf_put_buf(ies, wps_ie);
4456         wpabuf_free(wps_ie);
4457
4458         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4459
4460         params.p2p_probe = 1;
4461         params.extra_ies = wpabuf_head(ies);
4462         params.extra_ies_len = wpabuf_len(ies);
4463
4464         if (!freq) {
4465                 int oper_freq;
4466                 /*
4467                  * If freq is not provided, check the operating freq of the GO
4468                  * and use a single channel scan on if possible.
4469                  */
4470                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4471                                               wpa_s->pending_join_iface_addr);
4472                 if (oper_freq > 0)
4473                         freq = oper_freq;
4474         }
4475         if (freq > 0) {
4476                 freqs[0] = freq;
4477                 params.freqs = freqs;
4478         }
4479
4480         /*
4481          * Run a scan to update BSS table and start Provision Discovery once
4482          * the new scan results become available.
4483          */
4484         ret = wpa_drv_scan(wpa_s, &params);
4485         if (!ret) {
4486                 os_get_reltime(&wpa_s->scan_trigger_time);
4487                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4488                 wpa_s->own_scan_requested = 1;
4489         }
4490
4491         wpabuf_free(ies);
4492
4493         if (ret) {
4494                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4495                            "try again later");
4496                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4497                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4498                 wpas_p2p_check_join_scan_limit(wpa_s);
4499         }
4500 }
4501
4502
4503 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4504 {
4505         struct wpa_supplicant *wpa_s = eloop_ctx;
4506         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4507 }
4508
4509
4510 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4511                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4512                          int auto_join, int op_freq,
4513                          const u8 *ssid, size_t ssid_len)
4514 {
4515         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4516                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4517                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4518                    auto_join ? " (auto_join)" : "");
4519         if (ssid && ssid_len) {
4520                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4521                            wpa_ssid_txt(ssid, ssid_len));
4522         }
4523
4524         wpa_s->p2p_auto_pd = 0;
4525         wpa_s->p2p_auto_join = !!auto_join;
4526         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4527         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4528         wpa_s->pending_join_wps_method = wps_method;
4529
4530         /* Make sure we are not running find during connection establishment */
4531         wpas_p2p_stop_find(wpa_s);
4532
4533         wpa_s->p2p_join_scan_count = 0;
4534         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4535         return 0;
4536 }
4537
4538
4539 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4540                                const u8 *ssid, size_t ssid_len)
4541 {
4542         struct wpa_supplicant *group;
4543         struct p2p_go_neg_results res;
4544         struct wpa_bss *bss;
4545
4546         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4547         if (group == NULL)
4548                 return -1;
4549         if (group != wpa_s) {
4550                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4551                           sizeof(group->p2p_pin));
4552                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4553         } else {
4554                 /*
4555                  * Need to mark the current interface for p2p_group_formation
4556                  * when a separate group interface is not used. This is needed
4557                  * to allow p2p_cancel stop a pending p2p_connect-join.
4558                  * wpas_p2p_init_group_interface() addresses this for the case
4559                  * where a separate group interface is used.
4560                  */
4561                 wpa_s->global->p2p_group_formation = wpa_s;
4562         }
4563
4564         group->p2p_in_provisioning = 1;
4565         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4566
4567         os_memset(&res, 0, sizeof(res));
4568         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4569         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4570                   ETH_ALEN);
4571         res.wps_method = wpa_s->pending_join_wps_method;
4572         if (freq && ssid && ssid_len) {
4573                 res.freq = freq;
4574                 res.ssid_len = ssid_len;
4575                 os_memcpy(res.ssid, ssid, ssid_len);
4576         } else {
4577                 bss = wpa_bss_get_bssid_latest(wpa_s,
4578                                                wpa_s->pending_join_iface_addr);
4579                 if (bss) {
4580                         res.freq = bss->freq;
4581                         res.ssid_len = bss->ssid_len;
4582                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4583                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4584                                    bss->freq,
4585                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4586                 }
4587         }
4588
4589         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4590                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4591                            "starting client");
4592                 wpa_drv_cancel_remain_on_channel(wpa_s);
4593                 wpa_s->off_channel_freq = 0;
4594                 wpa_s->roc_waiting_drv_freq = 0;
4595         }
4596         wpas_start_wps_enrollee(group, &res);
4597
4598         /*
4599          * Allow a longer timeout for join-a-running-group than normal 15
4600          * second group formation timeout since the GO may not have authorized
4601          * our connection yet.
4602          */
4603         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4604         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4605                                wpa_s, NULL);
4606
4607         return 0;
4608 }
4609
4610
4611 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4612                                 int *force_freq, int *pref_freq, int go)
4613 {
4614         struct wpa_used_freq_data *freqs;
4615         int res, best_freq, num_unused;
4616         unsigned int freq_in_use = 0, num, i;
4617
4618         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4619                           sizeof(struct wpa_used_freq_data));
4620         if (!freqs)
4621                 return -1;
4622
4623         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4624                                         wpa_s->num_multichan_concurrent);
4625
4626         /*
4627          * It is possible that the total number of used frequencies is bigger
4628          * than the number of frequencies used for P2P, so get the system wide
4629          * number of unused frequencies.
4630          */
4631         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4632
4633         wpa_printf(MSG_DEBUG,
4634                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4635                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4636
4637         if (freq > 0) {
4638                 int ret;
4639                 if (go)
4640                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4641                 else
4642                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4643                 if (!ret) {
4644                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4645                                    "(%u MHz) is not supported for P2P uses",
4646                                    freq);
4647                         res = -3;
4648                         goto exit_free;
4649                 }
4650
4651                 for (i = 0; i < num; i++) {
4652                         if (freqs[i].freq == freq)
4653                                 freq_in_use = 1;
4654                 }
4655
4656                 if (num_unused <= 0 && !freq_in_use) {
4657                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4658                                    freq);
4659                         res = -2;
4660                         goto exit_free;
4661                 }
4662                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4663                            "requested channel (%u MHz)", freq);
4664                 *force_freq = freq;
4665                 goto exit_ok;
4666         }
4667
4668         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4669
4670         /* We have a candidate frequency to use */
4671         if (best_freq > 0) {
4672                 if (*pref_freq == 0 && num_unused > 0) {
4673                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4674                                    best_freq);
4675                         *pref_freq = best_freq;
4676                 } else {
4677                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4678                                    best_freq);
4679                         *force_freq = best_freq;
4680                 }
4681         } else if (num_unused > 0) {
4682                 wpa_printf(MSG_DEBUG,
4683                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4684                 *force_freq = 0;
4685         } else {
4686                 wpa_printf(MSG_DEBUG,
4687                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4688                 res = -2;
4689                 goto exit_free;
4690         }
4691
4692 exit_ok:
4693         res = 0;
4694 exit_free:
4695         os_free(freqs);
4696         return res;
4697 }
4698
4699
4700 /**
4701  * wpas_p2p_connect - Request P2P Group Formation to be started
4702  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4703  * @peer_addr: Address of the peer P2P Device
4704  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4705  * @persistent_group: Whether to create a persistent group
4706  * @auto_join: Whether to select join vs. GO Negotiation automatically
4707  * @join: Whether to join an existing group (as a client) instead of starting
4708  *      Group Owner negotiation; @peer_addr is BSSID in that case
4709  * @auth: Whether to only authorize the connection instead of doing that and
4710  *      initiating Group Owner negotiation
4711  * @go_intent: GO Intent or -1 to use default
4712  * @freq: Frequency for the group or 0 for auto-selection
4713  * @persistent_id: Persistent group credentials to use for forcing GO
4714  *      parameters or -1 to generate new values (SSID/passphrase)
4715  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4716  *      interoperability workaround when initiating group formation
4717  * @ht40: Start GO with 40 MHz channel width
4718  * @vht:  Start GO with VHT support
4719  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4720  *      failure, -2 on failure due to channel not currently available,
4721  *      -3 if forced channel is not supported
4722  */
4723 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4724                      const char *pin, enum p2p_wps_method wps_method,
4725                      int persistent_group, int auto_join, int join, int auth,
4726                      int go_intent, int freq, int persistent_id, int pd,
4727                      int ht40, int vht)
4728 {
4729         int force_freq = 0, pref_freq = 0;
4730         int ret = 0, res;
4731         enum wpa_driver_if_type iftype;
4732         const u8 *if_addr;
4733         struct wpa_ssid *ssid = NULL;
4734
4735         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4736                 return -1;
4737
4738         if (persistent_id >= 0) {
4739                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4740                 if (ssid == NULL || ssid->disabled != 2 ||
4741                     ssid->mode != WPAS_MODE_P2P_GO)
4742                         return -1;
4743         }
4744
4745         os_free(wpa_s->global->add_psk);
4746         wpa_s->global->add_psk = NULL;
4747
4748         wpa_s->global->p2p_fail_on_wps_complete = 0;
4749
4750         if (go_intent < 0)
4751                 go_intent = wpa_s->conf->p2p_go_intent;
4752
4753         if (!auth)
4754                 wpa_s->p2p_long_listen = 0;
4755
4756         wpa_s->p2p_wps_method = wps_method;
4757         wpa_s->p2p_persistent_group = !!persistent_group;
4758         wpa_s->p2p_persistent_id = persistent_id;
4759         wpa_s->p2p_go_intent = go_intent;
4760         wpa_s->p2p_connect_freq = freq;
4761         wpa_s->p2p_fallback_to_go_neg = 0;
4762         wpa_s->p2p_pd_before_go_neg = !!pd;
4763         wpa_s->p2p_go_ht40 = !!ht40;
4764         wpa_s->p2p_go_vht = !!vht;
4765
4766         if (pin)
4767                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4768         else if (wps_method == WPS_PIN_DISPLAY) {
4769                 ret = wps_generate_pin();
4770                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4771                             ret);
4772                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4773                            wpa_s->p2p_pin);
4774         } else
4775                 wpa_s->p2p_pin[0] = '\0';
4776
4777         if (join || auto_join) {
4778                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4779                 if (auth) {
4780                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4781                                    "connect a running group from " MACSTR,
4782                                    MAC2STR(peer_addr));
4783                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4784                         return ret;
4785                 }
4786                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4787                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4788                                            iface_addr) < 0) {
4789                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4790                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4791                                          dev_addr);
4792                 }
4793                 if (auto_join) {
4794                         os_get_reltime(&wpa_s->p2p_auto_started);
4795                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4796                                    "%ld.%06ld",
4797                                    wpa_s->p2p_auto_started.sec,
4798                                    wpa_s->p2p_auto_started.usec);
4799                 }
4800                 wpa_s->user_initiated_pd = 1;
4801                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4802                                   auto_join, freq, NULL, 0) < 0)
4803                         return -1;
4804                 return ret;
4805         }
4806
4807         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4808                                    go_intent == 15);
4809         if (res)
4810                 return res;
4811         wpas_p2p_set_own_freq_preference(wpa_s,
4812                                          force_freq ? force_freq : pref_freq);
4813
4814         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4815
4816         if (wpa_s->create_p2p_iface) {
4817                 /* Prepare to add a new interface for the group */
4818                 iftype = WPA_IF_P2P_GROUP;
4819                 if (go_intent == 15)
4820                         iftype = WPA_IF_P2P_GO;
4821                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4822                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4823                                    "interface for the group");
4824                         return -1;
4825                 }
4826
4827                 if_addr = wpa_s->pending_interface_addr;
4828         } else
4829                 if_addr = wpa_s->own_addr;
4830
4831         if (auth) {
4832                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4833                                          go_intent, if_addr,
4834                                          force_freq, persistent_group, ssid,
4835                                          pref_freq) < 0)
4836                         return -1;
4837                 return ret;
4838         }
4839
4840         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4841                                   go_intent, if_addr, force_freq,
4842                                   persistent_group, ssid, pref_freq) < 0) {
4843                 if (wpa_s->create_p2p_iface)
4844                         wpas_p2p_remove_pending_group_interface(wpa_s);
4845                 return -1;
4846         }
4847         return ret;
4848 }
4849
4850
4851 /**
4852  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4853  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4854  * @freq: Frequency of the channel in MHz
4855  * @duration: Duration of the stay on the channel in milliseconds
4856  *
4857  * This callback is called when the driver indicates that it has started the
4858  * requested remain-on-channel duration.
4859  */
4860 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4861                                    unsigned int freq, unsigned int duration)
4862 {
4863         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4864                 return;
4865         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4866                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4867                               wpa_s->pending_listen_duration);
4868                 wpa_s->pending_listen_freq = 0;
4869         } else {
4870                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4871                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4872                            freq, duration);
4873         }
4874 }
4875
4876
4877 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4878                                  unsigned int timeout)
4879 {
4880         /* Limit maximum Listen state time based on driver limitation. */
4881         if (timeout > wpa_s->max_remain_on_chan)
4882                 timeout = wpa_s->max_remain_on_chan;
4883
4884         return p2p_listen(wpa_s->global->p2p, timeout);
4885 }
4886
4887
4888 /**
4889  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4890  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4891  * @freq: Frequency of the channel in MHz
4892  *
4893  * This callback is called when the driver indicates that a remain-on-channel
4894  * operation has been completed, i.e., the duration on the requested channel
4895  * has timed out.
4896  */
4897 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4898                                           unsigned int freq)
4899 {
4900         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4901                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4902                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4903         wpas_p2p_listen_work_done(wpa_s);
4904         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4905                 return;
4906         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4907                 return; /* P2P module started a new operation */
4908         if (offchannel_pending_action_tx(wpa_s))
4909                 return;
4910         if (wpa_s->p2p_long_listen > 0)
4911                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4912         if (wpa_s->p2p_long_listen > 0) {
4913                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4914                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4915         } else {
4916                 /*
4917                  * When listen duration is over, stop listen & update p2p_state
4918                  * to IDLE.
4919                  */
4920                 p2p_stop_listen(wpa_s->global->p2p);
4921         }
4922 }
4923
4924
4925 /**
4926  * wpas_p2p_group_remove - Remove a P2P group
4927  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4928  * @ifname: Network interface name of the group interface or "*" to remove all
4929  *      groups
4930  * Returns: 0 on success, -1 on failure
4931  *
4932  * This function is used to remove a P2P group. This can be used to disconnect
4933  * from a group in which the local end is a P2P Client or to end a P2P Group in
4934  * case the local end is the Group Owner. If a virtual network interface was
4935  * created for this group, that interface will be removed. Otherwise, only the
4936  * configured P2P group network will be removed from the interface.
4937  */
4938 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4939 {
4940         struct wpa_global *global = wpa_s->global;
4941
4942         if (os_strcmp(ifname, "*") == 0) {
4943                 struct wpa_supplicant *prev;
4944                 wpa_s = global->ifaces;
4945                 while (wpa_s) {
4946                         prev = wpa_s;
4947                         wpa_s = wpa_s->next;
4948                         if (prev->p2p_group_interface !=
4949                             NOT_P2P_GROUP_INTERFACE ||
4950                             (prev->current_ssid &&
4951                              prev->current_ssid->p2p_group))
4952                                 wpas_p2p_disconnect(prev);
4953                 }
4954                 return 0;
4955         }
4956
4957         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4958                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4959                         break;
4960         }
4961
4962         return wpas_p2p_disconnect(wpa_s);
4963 }
4964
4965
4966 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4967 {
4968         unsigned int r;
4969
4970         if (freq == 2) {
4971                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4972                            "band");
4973                 if (wpa_s->best_24_freq > 0 &&
4974                     p2p_supported_freq_go(wpa_s->global->p2p,
4975                                           wpa_s->best_24_freq)) {
4976                         freq = wpa_s->best_24_freq;
4977                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4978                                    "channel: %d MHz", freq);
4979                 } else {
4980                         os_get_random((u8 *) &r, sizeof(r));
4981                         freq = 2412 + (r % 3) * 25;
4982                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4983                                    "channel: %d MHz", freq);
4984                 }
4985         }
4986
4987         if (freq == 5) {
4988                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4989                            "band");
4990                 if (wpa_s->best_5_freq > 0 &&
4991                     p2p_supported_freq_go(wpa_s->global->p2p,
4992                                        wpa_s->best_5_freq)) {
4993                         freq = wpa_s->best_5_freq;
4994                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4995                                    "channel: %d MHz", freq);
4996                 } else {
4997                         os_get_random((u8 *) &r, sizeof(r));
4998                         freq = 5180 + (r % 4) * 20;
4999                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5000                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5001                                            "5 GHz channel for P2P group");
5002                                 return -1;
5003                         }
5004                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5005                                    "channel: %d MHz", freq);
5006                 }
5007         }
5008
5009         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5010                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5011                            "(%u MHz) is not supported for P2P uses",
5012                            freq);
5013                 return -1;
5014         }
5015
5016         return freq;
5017 }
5018
5019
5020 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5021                                         struct p2p_go_neg_results *params,
5022                                         const struct p2p_channels *channels)
5023 {
5024         unsigned int i, r;
5025
5026         /* first try some random selection of the social channels */
5027         os_get_random((u8 *) &r, sizeof(r));
5028
5029         for (i = 0; i < 3; i++) {
5030                 params->freq = 2412 + ((r + i) % 3) * 25;
5031                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5032                     freq_included(channels, params->freq))
5033                         goto out;
5034         }
5035
5036         /* try all channels in reg. class 81 */
5037         for (i = 0; i < 11; i++) {
5038                 params->freq = 2412 + i * 5;
5039                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5040                     freq_included(channels, params->freq))
5041                         goto out;
5042         }
5043
5044         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel allowed");
5045         return -1;
5046 out:
5047         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5048                    params->freq);
5049         return 0;
5050 }
5051
5052
5053 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5054                                    struct p2p_go_neg_results *params,
5055                                    int freq, int ht40, int vht,
5056                                    const struct p2p_channels *channels)
5057 {
5058         struct wpa_used_freq_data *freqs;
5059         unsigned int pref_freq, cand_freq;
5060         unsigned int num, i;
5061
5062         os_memset(params, 0, sizeof(*params));
5063         params->role_go = 1;
5064         params->ht40 = ht40;
5065         params->vht = vht;
5066         if (freq) {
5067                 if (!freq_included(channels, freq)) {
5068                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5069                                    "accepted", freq);
5070                         return -1;
5071                 }
5072                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5073                            "frequency %d MHz", freq);
5074                 params->freq = freq;
5075         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5076                    wpa_s->conf->p2p_oper_channel >= 1 &&
5077                    wpa_s->conf->p2p_oper_channel <= 11 &&
5078                    freq_included(channels,
5079                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5080                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5081                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5082                            "frequency %d MHz", params->freq);
5083         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5084                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5085                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5086                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5087                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5088                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5089                    freq_included(channels,
5090                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5091                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5092                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5093                            "frequency %d MHz", params->freq);
5094         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5095                    wpa_s->best_overall_freq > 0 &&
5096                    p2p_supported_freq_go(wpa_s->global->p2p,
5097                                          wpa_s->best_overall_freq) &&
5098                    freq_included(channels, wpa_s->best_overall_freq)) {
5099                 params->freq = wpa_s->best_overall_freq;
5100                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5101                            "channel %d MHz", params->freq);
5102         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5103                    wpa_s->best_24_freq > 0 &&
5104                    p2p_supported_freq_go(wpa_s->global->p2p,
5105                                          wpa_s->best_24_freq) &&
5106                    freq_included(channels, wpa_s->best_24_freq)) {
5107                 params->freq = wpa_s->best_24_freq;
5108                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5109                            "channel %d MHz", params->freq);
5110         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5111                    wpa_s->best_5_freq > 0 &&
5112                    p2p_supported_freq_go(wpa_s->global->p2p,
5113                                          wpa_s->best_5_freq) &&
5114                    freq_included(channels, wpa_s->best_5_freq)) {
5115                 params->freq = wpa_s->best_5_freq;
5116                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5117                            "channel %d MHz", params->freq);
5118         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5119                                                   channels))) {
5120                 params->freq = pref_freq;
5121                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5122                            "channels", params->freq);
5123         } else {
5124                 /* no preference, select some channel */
5125                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5126                         return -1;
5127         }
5128
5129         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5130                           sizeof(struct wpa_used_freq_data));
5131         if (!freqs)
5132                 return -1;
5133
5134         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5135                                         wpa_s->num_multichan_concurrent);
5136
5137         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5138
5139         /* First try the best used frequency if possible */
5140         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5141                 params->freq = cand_freq;
5142         } else if (!freq) {
5143                 /* Try any of the used frequencies */
5144                 for (i = 0; i < num; i++) {
5145                         if (freq_included(channels, freqs[i].freq)) {
5146                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5147                                            freqs[i].freq);
5148                                 params->freq = freqs[i].freq;
5149                                 break;
5150                         }
5151                 }
5152
5153                 if (i == num) {
5154                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5155                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5156                                 os_free(freqs);
5157                                 return -1;
5158                         } else {
5159                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5160                         }
5161                 }
5162         } else {
5163                 for (i = 0; i < num; i++) {
5164                         if (freqs[i].freq == freq)
5165                                 break;
5166                 }
5167
5168                 if (i == num) {
5169                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5170                                 if (freq)
5171                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5172                                 os_free(freqs);
5173                                 return -1;
5174                         } else {
5175                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5176                         }
5177                 }
5178         }
5179
5180         os_free(freqs);
5181         return 0;
5182 }
5183
5184
5185 static struct wpa_supplicant *
5186 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5187                          int go)
5188 {
5189         struct wpa_supplicant *group_wpa_s;
5190
5191         if (!wpas_p2p_create_iface(wpa_s)) {
5192                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5193                         "operations");
5194                 wpa_s->p2p_first_connection_timeout = 0;
5195                 return wpa_s;
5196         }
5197
5198         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5199                                          WPA_IF_P2P_CLIENT) < 0) {
5200                 wpa_msg_global(wpa_s, MSG_ERROR,
5201                                "P2P: Failed to add group interface");
5202                 return NULL;
5203         }
5204         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5205         if (group_wpa_s == NULL) {
5206                 wpa_msg_global(wpa_s, MSG_ERROR,
5207                                "P2P: Failed to initialize group interface");
5208                 wpas_p2p_remove_pending_group_interface(wpa_s);
5209                 return NULL;
5210         }
5211
5212         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5213                 group_wpa_s->ifname);
5214         group_wpa_s->p2p_first_connection_timeout = 0;
5215         return group_wpa_s;
5216 }
5217
5218
5219 /**
5220  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5221  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5222  * @persistent_group: Whether to create a persistent group
5223  * @freq: Frequency for the group or 0 to indicate no hardcoding
5224  * @ht40: Start GO with 40 MHz channel width
5225  * @vht:  Start GO with VHT support
5226  * Returns: 0 on success, -1 on failure
5227  *
5228  * This function creates a new P2P group with the local end as the Group Owner,
5229  * i.e., without using Group Owner Negotiation.
5230  */
5231 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5232                        int freq, int ht40, int vht)
5233 {
5234         struct p2p_go_neg_results params;
5235
5236         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5237                 return -1;
5238
5239         os_free(wpa_s->global->add_psk);
5240         wpa_s->global->add_psk = NULL;
5241
5242         /* Make sure we are not running find during connection establishment */
5243         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5244         wpas_p2p_stop_find_oper(wpa_s);
5245
5246         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5247         if (freq < 0)
5248                 return -1;
5249
5250         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5251                 return -1;
5252         if (params.freq &&
5253             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5254                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5255                            "(%u MHz) is not supported for P2P uses",
5256                            params.freq);
5257                 return -1;
5258         }
5259         p2p_go_params(wpa_s->global->p2p, &params);
5260         params.persistent_group = persistent_group;
5261
5262         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5263         if (wpa_s == NULL)
5264                 return -1;
5265         wpas_start_wps_go(wpa_s, &params, 0);
5266
5267         return 0;
5268 }
5269
5270
5271 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5272                                  struct wpa_ssid *params, int addr_allocated,
5273                                  int freq)
5274 {
5275         struct wpa_ssid *ssid;
5276
5277         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5278         if (wpa_s == NULL)
5279                 return -1;
5280         wpa_s->p2p_last_4way_hs_fail = NULL;
5281
5282         wpa_supplicant_ap_deinit(wpa_s);
5283
5284         ssid = wpa_config_add_network(wpa_s->conf);
5285         if (ssid == NULL)
5286                 return -1;
5287         wpa_config_set_network_defaults(ssid);
5288         ssid->temporary = 1;
5289         ssid->proto = WPA_PROTO_RSN;
5290         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5291         ssid->group_cipher = WPA_CIPHER_CCMP;
5292         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5293         ssid->ssid = os_malloc(params->ssid_len);
5294         if (ssid->ssid == NULL) {
5295                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5296                 return -1;
5297         }
5298         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5299         ssid->ssid_len = params->ssid_len;
5300         ssid->p2p_group = 1;
5301         ssid->export_keys = 1;
5302         if (params->psk_set) {
5303                 os_memcpy(ssid->psk, params->psk, 32);
5304                 ssid->psk_set = 1;
5305         }
5306         if (params->passphrase)
5307                 ssid->passphrase = os_strdup(params->passphrase);
5308
5309         wpa_s->show_group_started = 1;
5310         wpa_s->p2p_in_invitation = 1;
5311         wpa_s->p2p_invite_go_freq = freq;
5312
5313         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5314                              NULL);
5315         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5316                                wpas_p2p_group_formation_timeout,
5317                                wpa_s->parent, NULL);
5318         wpa_supplicant_select_network(wpa_s, ssid);
5319
5320         return 0;
5321 }
5322
5323
5324 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5325                                   struct wpa_ssid *ssid, int addr_allocated,
5326                                   int force_freq, int neg_freq, int ht40,
5327                                   int vht, const struct p2p_channels *channels,
5328                                   int connection_timeout)
5329 {
5330         struct p2p_go_neg_results params;
5331         int go = 0, freq;
5332
5333         if (ssid->disabled != 2 || ssid->ssid == NULL)
5334                 return -1;
5335
5336         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5337             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5338                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5339                            "already running");
5340                 return 0;
5341         }
5342
5343         os_free(wpa_s->global->add_psk);
5344         wpa_s->global->add_psk = NULL;
5345
5346         /* Make sure we are not running find during connection establishment */
5347         wpas_p2p_stop_find_oper(wpa_s);
5348
5349         wpa_s->p2p_fallback_to_go_neg = 0;
5350
5351         if (force_freq > 0) {
5352                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5353                 if (freq < 0)
5354                         return -1;
5355         } else {
5356                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5357                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5358                         freq = 0;
5359         }
5360
5361         if (ssid->mode == WPAS_MODE_INFRA)
5362                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5363
5364         if (ssid->mode != WPAS_MODE_P2P_GO)
5365                 return -1;
5366
5367         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5368                 return -1;
5369
5370         params.role_go = 1;
5371         params.psk_set = ssid->psk_set;
5372         if (params.psk_set)
5373                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5374         if (ssid->passphrase) {
5375                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5376                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5377                                    "persistent group");
5378                         return -1;
5379                 }
5380                 os_strlcpy(params.passphrase, ssid->passphrase,
5381                            sizeof(params.passphrase));
5382         }
5383         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5384         params.ssid_len = ssid->ssid_len;
5385         params.persistent_group = 1;
5386
5387         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5388         if (wpa_s == NULL)
5389                 return -1;
5390
5391         wpa_s->p2p_first_connection_timeout = connection_timeout;
5392         wpas_start_wps_go(wpa_s, &params, 0);
5393
5394         return 0;
5395 }
5396
5397
5398 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5399                                struct wpabuf *proberesp_ies)
5400 {
5401         struct wpa_supplicant *wpa_s = ctx;
5402         if (wpa_s->ap_iface) {
5403                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5404                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5405                         wpabuf_free(beacon_ies);
5406                         wpabuf_free(proberesp_ies);
5407                         return;
5408                 }
5409                 if (beacon_ies) {
5410                         wpabuf_free(hapd->p2p_beacon_ie);
5411                         hapd->p2p_beacon_ie = beacon_ies;
5412                 }
5413                 wpabuf_free(hapd->p2p_probe_resp_ie);
5414                 hapd->p2p_probe_resp_ie = proberesp_ies;
5415         } else {
5416                 wpabuf_free(beacon_ies);
5417                 wpabuf_free(proberesp_ies);
5418         }
5419         wpa_supplicant_ap_update_beacon(wpa_s);
5420 }
5421
5422
5423 static void wpas_p2p_idle_update(void *ctx, int idle)
5424 {
5425         struct wpa_supplicant *wpa_s = ctx;
5426         if (!wpa_s->ap_iface)
5427                 return;
5428         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5429         if (idle) {
5430                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5431                     wpa_s->p2p_in_provisioning) {
5432                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5433                         return;
5434                 }
5435                 wpas_p2p_set_group_idle_timeout(wpa_s);
5436         } else
5437                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5438 }
5439
5440
5441 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5442                                        struct wpa_ssid *ssid)
5443 {
5444         struct p2p_group *group;
5445         struct p2p_group_config *cfg;
5446
5447         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5448                 return NULL;
5449
5450         cfg = os_zalloc(sizeof(*cfg));
5451         if (cfg == NULL)
5452                 return NULL;
5453
5454         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5455                 cfg->persistent_group = 2;
5456         else if (ssid->p2p_persistent_group)
5457                 cfg->persistent_group = 1;
5458         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5459         if (wpa_s->max_stations &&
5460             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5461                 cfg->max_clients = wpa_s->max_stations;
5462         else
5463                 cfg->max_clients = wpa_s->conf->max_num_sta;
5464         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5465         cfg->ssid_len = ssid->ssid_len;
5466         cfg->freq = ssid->frequency;
5467         cfg->cb_ctx = wpa_s;
5468         cfg->ie_update = wpas_p2p_ie_update;
5469         cfg->idle_update = wpas_p2p_idle_update;
5470
5471         group = p2p_group_init(wpa_s->global->p2p, cfg);
5472         if (group == NULL)
5473                 os_free(cfg);
5474         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5475                 p2p_group_notif_formation_done(group);
5476         wpa_s->p2p_group = group;
5477         return group;
5478 }
5479
5480
5481 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5482                           int registrar)
5483 {
5484         struct wpa_ssid *ssid = wpa_s->current_ssid;
5485
5486         if (!wpa_s->p2p_in_provisioning) {
5487                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5488                            "provisioning not in progress");
5489                 return;
5490         }
5491
5492         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5493                 u8 go_dev_addr[ETH_ALEN];
5494                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5495                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5496                                           ssid->ssid_len);
5497                 /* Clear any stored provisioning info */
5498                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5499         }
5500
5501         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5502                              NULL);
5503         wpa_s->p2p_go_group_formation_completed = 1;
5504         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5505                 /*
5506                  * Use a separate timeout for initial data connection to
5507                  * complete to allow the group to be removed automatically if
5508                  * something goes wrong in this step before the P2P group idle
5509                  * timeout mechanism is taken into use.
5510                  */
5511                 wpa_dbg(wpa_s, MSG_DEBUG,
5512                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5513                         P2P_MAX_INITIAL_CONN_WAIT);
5514                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5515                                        wpas_p2p_group_formation_timeout,
5516                                        wpa_s->parent, NULL);
5517         } else if (ssid) {
5518                 /*
5519                  * Use a separate timeout for initial data connection to
5520                  * complete to allow the group to be removed automatically if
5521                  * the client does not complete data connection successfully.
5522                  */
5523                 wpa_dbg(wpa_s, MSG_DEBUG,
5524                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5525                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5526                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5527                                        wpas_p2p_group_formation_timeout,
5528                                        wpa_s->parent, NULL);
5529                 /*
5530                  * Complete group formation on first successful data connection
5531                  */
5532                 wpa_s->p2p_go_group_formation_completed = 0;
5533         }
5534         if (wpa_s->global->p2p)
5535                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5536         wpas_group_formation_completed(wpa_s, 1);
5537 }
5538
5539
5540 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5541                          struct wps_event_fail *fail)
5542 {
5543         if (!wpa_s->p2p_in_provisioning) {
5544                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5545                            "provisioning not in progress");
5546                 return;
5547         }
5548
5549         if (wpa_s->go_params) {
5550                 p2p_clear_provisioning_info(
5551                         wpa_s->global->p2p,
5552                         wpa_s->go_params->peer_device_addr);
5553         }
5554
5555         wpas_notify_p2p_wps_failed(wpa_s, fail);
5556
5557         if (wpa_s == wpa_s->global->p2p_group_formation) {
5558                 /*
5559                  * Allow some time for the failed WPS negotiation exchange to
5560                  * complete, but remove the group since group formation cannot
5561                  * succeed after provisioning failure.
5562                  */
5563                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5564                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5565                 eloop_deplete_timeout(0, 50000,
5566                                       wpas_p2p_group_formation_timeout,
5567                                       wpa_s->parent, NULL);
5568         }
5569 }
5570
5571
5572 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5573 {
5574         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5575             !wpa_s->p2p_in_provisioning)
5576                 return 0;
5577
5578         wpas_p2p_grpform_fail_after_wps(wpa_s);
5579
5580         return 1;
5581 }
5582
5583
5584 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5585                        const char *config_method,
5586                        enum wpas_p2p_prov_disc_use use)
5587 {
5588         u16 config_methods;
5589
5590         wpa_s->p2p_fallback_to_go_neg = 0;
5591         wpa_s->pending_pd_use = NORMAL_PD;
5592         if (os_strncmp(config_method, "display", 7) == 0)
5593                 config_methods = WPS_CONFIG_DISPLAY;
5594         else if (os_strncmp(config_method, "keypad", 6) == 0)
5595                 config_methods = WPS_CONFIG_KEYPAD;
5596         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5597                  os_strncmp(config_method, "pushbutton", 10) == 0)
5598                 config_methods = WPS_CONFIG_PUSHBUTTON;
5599         else {
5600                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5601                 return -1;
5602         }
5603
5604         if (use == WPAS_P2P_PD_AUTO) {
5605                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5606                 wpa_s->pending_pd_config_methods = config_methods;
5607                 wpa_s->p2p_auto_pd = 1;
5608                 wpa_s->p2p_auto_join = 0;
5609                 wpa_s->pending_pd_before_join = 0;
5610                 wpa_s->auto_pd_scan_retry = 0;
5611                 wpas_p2p_stop_find(wpa_s);
5612                 wpa_s->p2p_join_scan_count = 0;
5613                 os_get_reltime(&wpa_s->p2p_auto_started);
5614                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5615                            wpa_s->p2p_auto_started.sec,
5616                            wpa_s->p2p_auto_started.usec);
5617                 wpas_p2p_join_scan(wpa_s, NULL);
5618                 return 0;
5619         }
5620
5621         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5622                 return -1;
5623
5624         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5625                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5626                                  0, 1);
5627 }
5628
5629
5630 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5631                               char *end)
5632 {
5633         return p2p_scan_result_text(ies, ies_len, buf, end);
5634 }
5635
5636
5637 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5638 {
5639         if (!offchannel_pending_action_tx(wpa_s))
5640                 return;
5641
5642         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5643                    "operation request");
5644         offchannel_clear_pending_action_tx(wpa_s);
5645 }
5646
5647
5648 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5649                   enum p2p_discovery_type type,
5650                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5651                   const u8 *dev_id, unsigned int search_delay)
5652 {
5653         wpas_p2p_clear_pending_action_tx(wpa_s);
5654         wpa_s->p2p_long_listen = 0;
5655
5656         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5657             wpa_s->p2p_in_provisioning)
5658                 return -1;
5659
5660         wpa_supplicant_cancel_sched_scan(wpa_s);
5661
5662         return p2p_find(wpa_s->global->p2p, timeout, type,
5663                         num_req_dev_types, req_dev_types, dev_id,
5664                         search_delay);
5665 }
5666
5667
5668 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5669 {
5670         wpas_p2p_clear_pending_action_tx(wpa_s);
5671         wpa_s->p2p_long_listen = 0;
5672         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5673         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5674
5675         if (wpa_s->global->p2p)
5676                 p2p_stop_find(wpa_s->global->p2p);
5677
5678         return 0;
5679 }
5680
5681
5682 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5683 {
5684         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5685                 return;
5686         wpas_p2p_remove_pending_group_interface(wpa_s);
5687 }
5688
5689
5690 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5691 {
5692         struct wpa_supplicant *wpa_s = eloop_ctx;
5693         wpa_s->p2p_long_listen = 0;
5694 }
5695
5696
5697 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5698 {
5699         int res;
5700
5701         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5702                 return -1;
5703
5704         wpa_supplicant_cancel_sched_scan(wpa_s);
5705         wpas_p2p_clear_pending_action_tx(wpa_s);
5706
5707         if (timeout == 0) {
5708                 /*
5709                  * This is a request for unlimited Listen state. However, at
5710                  * least for now, this is mapped to a Listen state for one
5711                  * hour.
5712                  */
5713                 timeout = 3600;
5714         }
5715         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5716         wpa_s->p2p_long_listen = 0;
5717
5718         /*
5719          * Stop previous find/listen operation to avoid trying to request a new
5720          * remain-on-channel operation while the driver is still running the
5721          * previous one.
5722          */
5723         if (wpa_s->global->p2p)
5724                 p2p_stop_find(wpa_s->global->p2p);
5725
5726         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5727         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5728                 wpa_s->p2p_long_listen = timeout * 1000;
5729                 eloop_register_timeout(timeout, 0,
5730                                        wpas_p2p_long_listen_timeout,
5731                                        wpa_s, NULL);
5732         }
5733
5734         return res;
5735 }
5736
5737
5738 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5739                           u8 *buf, size_t len, int p2p_group)
5740 {
5741         struct wpabuf *p2p_ie;
5742         int ret;
5743
5744         if (wpa_s->global->p2p_disabled)
5745                 return -1;
5746         if (wpa_s->global->p2p == NULL)
5747                 return -1;
5748         if (bss == NULL)
5749                 return -1;
5750
5751         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5752         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5753                                p2p_group, p2p_ie);
5754         wpabuf_free(p2p_ie);
5755
5756         return ret;
5757 }
5758
5759
5760 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5761                           const u8 *dst, const u8 *bssid,
5762                           const u8 *ie, size_t ie_len, int ssi_signal)
5763 {
5764         if (wpa_s->global->p2p_disabled)
5765                 return 0;
5766         if (wpa_s->global->p2p == NULL)
5767                 return 0;
5768
5769         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5770                                  ie, ie_len)) {
5771         case P2P_PREQ_NOT_P2P:
5772                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5773                                  ssi_signal);
5774                 /* fall through */
5775         case P2P_PREQ_MALFORMED:
5776         case P2P_PREQ_NOT_LISTEN:
5777         case P2P_PREQ_NOT_PROCESSED:
5778         default: /* make gcc happy */
5779                 return 0;
5780         case P2P_PREQ_PROCESSED:
5781                 return 1;
5782         }
5783 }
5784
5785
5786 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5787                         const u8 *sa, const u8 *bssid,
5788                         u8 category, const u8 *data, size_t len, int freq)
5789 {
5790         if (wpa_s->global->p2p_disabled)
5791                 return;
5792         if (wpa_s->global->p2p == NULL)
5793                 return;
5794
5795         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5796                       freq);
5797 }
5798
5799
5800 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5801 {
5802         if (wpa_s->global->p2p_disabled)
5803                 return;
5804         if (wpa_s->global->p2p == NULL)
5805                 return;
5806
5807         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5808 }
5809
5810
5811 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5812 {
5813         p2p_group_deinit(wpa_s->p2p_group);
5814         wpa_s->p2p_group = NULL;
5815
5816         wpa_s->ap_configured_cb = NULL;
5817         wpa_s->ap_configured_cb_ctx = NULL;
5818         wpa_s->ap_configured_cb_data = NULL;
5819         wpa_s->connect_without_scan = NULL;
5820 }
5821
5822
5823 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5824 {
5825         wpa_s->p2p_long_listen = 0;
5826
5827         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5828                 return -1;
5829
5830         return p2p_reject(wpa_s->global->p2p, addr);
5831 }
5832
5833
5834 /* Invite to reinvoke a persistent group */
5835 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5836                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5837                     int ht40, int vht, int pref_freq)
5838 {
5839         enum p2p_invite_role role;
5840         u8 *bssid = NULL;
5841         int force_freq = 0;
5842         int res;
5843         int no_pref_freq_given = pref_freq == 0;
5844
5845         wpa_s->global->p2p_invite_group = NULL;
5846         if (peer_addr)
5847                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5848         else
5849                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5850
5851         wpa_s->p2p_persistent_go_freq = freq;
5852         wpa_s->p2p_go_ht40 = !!ht40;
5853         if (ssid->mode == WPAS_MODE_P2P_GO) {
5854                 role = P2P_INVITE_ROLE_GO;
5855                 if (peer_addr == NULL) {
5856                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5857                                    "address in invitation command");
5858                         return -1;
5859                 }
5860                 if (wpas_p2p_create_iface(wpa_s)) {
5861                         if (wpas_p2p_add_group_interface(wpa_s,
5862                                                          WPA_IF_P2P_GO) < 0) {
5863                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5864                                            "allocate a new interface for the "
5865                                            "group");
5866                                 return -1;
5867                         }
5868                         bssid = wpa_s->pending_interface_addr;
5869                 } else
5870                         bssid = wpa_s->own_addr;
5871         } else {
5872                 role = P2P_INVITE_ROLE_CLIENT;
5873                 peer_addr = ssid->bssid;
5874         }
5875         wpa_s->pending_invite_ssid_id = ssid->id;
5876
5877         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5878                                    role == P2P_INVITE_ROLE_GO);
5879         if (res)
5880                 return res;
5881
5882         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5883                 return -1;
5884
5885         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5886             no_pref_freq_given && pref_freq > 0 &&
5887             wpa_s->num_multichan_concurrent > 1 &&
5888             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5889                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5890                            pref_freq);
5891                 pref_freq = 0;
5892         }
5893
5894         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5895                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5896                           1, pref_freq, -1);
5897 }
5898
5899
5900 /* Invite to join an active group */
5901 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5902                           const u8 *peer_addr, const u8 *go_dev_addr)
5903 {
5904         struct wpa_global *global = wpa_s->global;
5905         enum p2p_invite_role role;
5906         u8 *bssid = NULL;
5907         struct wpa_ssid *ssid;
5908         int persistent;
5909         int freq = 0, force_freq = 0, pref_freq = 0;
5910         int res;
5911
5912         wpa_s->p2p_persistent_go_freq = 0;
5913         wpa_s->p2p_go_ht40 = 0;
5914         wpa_s->p2p_go_vht = 0;
5915
5916         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5917                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5918                         break;
5919         }
5920         if (wpa_s == NULL) {
5921                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5922                 return -1;
5923         }
5924
5925         ssid = wpa_s->current_ssid;
5926         if (ssid == NULL) {
5927                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5928                            "invitation");
5929                 return -1;
5930         }
5931
5932         wpa_s->global->p2p_invite_group = wpa_s;
5933         persistent = ssid->p2p_persistent_group &&
5934                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5935                                         ssid->ssid, ssid->ssid_len);
5936
5937         if (ssid->mode == WPAS_MODE_P2P_GO) {
5938                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5939                 bssid = wpa_s->own_addr;
5940                 if (go_dev_addr == NULL)
5941                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5942                 freq = ssid->frequency;
5943         } else {
5944                 role = P2P_INVITE_ROLE_CLIENT;
5945                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5946                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5947                                    "invite to current group");
5948                         return -1;
5949                 }
5950                 bssid = wpa_s->bssid;
5951                 if (go_dev_addr == NULL &&
5952                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5953                         go_dev_addr = wpa_s->go_dev_addr;
5954                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5955                         (int) wpa_s->assoc_freq;
5956         }
5957         wpa_s->parent->pending_invite_ssid_id = -1;
5958
5959         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5960                 return -1;
5961
5962         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5963                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5964         if (res)
5965                 return res;
5966         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5967
5968         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5969                           ssid->ssid, ssid->ssid_len, force_freq,
5970                           go_dev_addr, persistent, pref_freq, -1);
5971 }
5972
5973
5974 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5975 {
5976         struct wpa_ssid *ssid = wpa_s->current_ssid;
5977         const char *ssid_txt;
5978         u8 go_dev_addr[ETH_ALEN];
5979         int network_id = -1;
5980         int persistent;
5981         int freq;
5982         u8 ip[3 * 4];
5983         char ip_addr[100];
5984
5985         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5986                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5987                                      wpa_s->parent, NULL);
5988         }
5989
5990         if (!wpa_s->show_group_started || !ssid)
5991                 return;
5992
5993         wpa_s->show_group_started = 0;
5994
5995         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5996         os_memset(go_dev_addr, 0, ETH_ALEN);
5997         if (ssid->bssid_set)
5998                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5999         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6000                                                ssid->ssid_len);
6001         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6002
6003         if (wpa_s->global->p2p_group_formation == wpa_s)
6004                 wpa_s->global->p2p_group_formation = NULL;
6005
6006         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6007                 (int) wpa_s->assoc_freq;
6008
6009         ip_addr[0] = '\0';
6010         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6011                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
6012                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6013                             ip[0], ip[1], ip[2], ip[3],
6014                             ip[4], ip[5], ip[6], ip[7],
6015                             ip[8], ip[9], ip[10], ip[11]);
6016         }
6017
6018         if (ssid->passphrase == NULL && ssid->psk_set) {
6019                 char psk[65];
6020                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
6021                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
6022                                "%s client ssid=\"%s\" freq=%d psk=%s "
6023                                "go_dev_addr=" MACSTR "%s%s",
6024                                wpa_s->ifname, ssid_txt, freq, psk,
6025                                MAC2STR(go_dev_addr),
6026                                persistent ? " [PERSISTENT]" : "", ip_addr);
6027         } else {
6028                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
6029                                "%s client ssid=\"%s\" freq=%d "
6030                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
6031                                wpa_s->ifname, ssid_txt, freq,
6032                                ssid->passphrase ? ssid->passphrase : "",
6033                                MAC2STR(go_dev_addr),
6034                                persistent ? " [PERSISTENT]" : "", ip_addr);
6035         }
6036
6037         if (persistent)
6038                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6039                                                              ssid, go_dev_addr);
6040         if (network_id < 0)
6041                 network_id = ssid->id;
6042         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6043 }
6044
6045
6046 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6047                           u32 interval1, u32 duration2, u32 interval2)
6048 {
6049         int ret;
6050
6051         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6052                 return -1;
6053
6054         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6055             wpa_s->current_ssid == NULL ||
6056             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6057                 return -1;
6058
6059         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6060                                wpa_s->own_addr, wpa_s->assoc_freq,
6061                                duration1, interval1, duration2, interval2);
6062         if (ret == 0)
6063                 wpa_s->waiting_presence_resp = 1;
6064
6065         return ret;
6066 }
6067
6068
6069 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6070                         unsigned int interval)
6071 {
6072         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6073                 return -1;
6074
6075         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6076 }
6077
6078
6079 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6080 {
6081         if (wpa_s->current_ssid == NULL) {
6082                 /*
6083                  * current_ssid can be cleared when P2P client interface gets
6084                  * disconnected, so assume this interface was used as P2P
6085                  * client.
6086                  */
6087                 return 1;
6088         }
6089         return wpa_s->current_ssid->p2p_group &&
6090                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6091 }
6092
6093
6094 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6095 {
6096         struct wpa_supplicant *wpa_s = eloop_ctx;
6097
6098         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6099                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6100                            "disabled");
6101                 return;
6102         }
6103
6104         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6105                    "group");
6106         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6107 }
6108
6109
6110 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6111 {
6112         int timeout;
6113
6114         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6115                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6116
6117         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6118                 return;
6119
6120         timeout = wpa_s->conf->p2p_group_idle;
6121         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6122             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6123             timeout = P2P_MAX_CLIENT_IDLE;
6124
6125         if (timeout == 0)
6126                 return;
6127
6128         if (timeout < 0) {
6129                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6130                         timeout = 0; /* special client mode no-timeout */
6131                 else
6132                         return;
6133         }
6134
6135         if (wpa_s->p2p_in_provisioning) {
6136                 /*
6137                  * Use the normal group formation timeout during the
6138                  * provisioning phase to avoid terminating this process too
6139                  * early due to group idle timeout.
6140                  */
6141                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6142                            "during provisioning");
6143                 return;
6144         }
6145
6146         if (wpa_s->show_group_started) {
6147                 /*
6148                  * Use the normal group formation timeout between the end of
6149                  * the provisioning phase and completion of 4-way handshake to
6150                  * avoid terminating this process too early due to group idle
6151                  * timeout.
6152                  */
6153                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6154                            "while waiting for initial 4-way handshake to "
6155                            "complete");
6156                 return;
6157         }
6158
6159         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6160                    timeout);
6161         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6162                                wpa_s, NULL);
6163 }
6164
6165
6166 /* Returns 1 if the interface was removed */
6167 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6168                           u16 reason_code, const u8 *ie, size_t ie_len,
6169                           int locally_generated)
6170 {
6171         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6172                 return 0;
6173
6174         if (!locally_generated)
6175                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6176                                  ie_len);
6177
6178         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6179             wpa_s->current_ssid &&
6180             wpa_s->current_ssid->p2p_group &&
6181             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6182                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6183                            "session is ending");
6184                 if (wpas_p2p_group_delete(wpa_s,
6185                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6186                     > 0)
6187                         return 1;
6188         }
6189
6190         return 0;
6191 }
6192
6193
6194 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6195                              u16 reason_code, const u8 *ie, size_t ie_len,
6196                              int locally_generated)
6197 {
6198         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6199                 return;
6200
6201         if (!locally_generated)
6202                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6203                                    ie_len);
6204 }
6205
6206
6207 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6208 {
6209         struct p2p_data *p2p = wpa_s->global->p2p;
6210
6211         if (p2p == NULL)
6212                 return;
6213
6214         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6215                 return;
6216
6217         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6218                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6219
6220         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6221                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6222
6223         if (wpa_s->wps &&
6224             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6225                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6226
6227         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6228                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6229
6230         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6231                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6232                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6233                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6234                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6235         }
6236
6237         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6238                 p2p_set_sec_dev_types(p2p,
6239                                       (void *) wpa_s->conf->sec_device_type,
6240                                       wpa_s->conf->num_sec_device_types);
6241
6242         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6243                 int i;
6244                 p2p_remove_wps_vendor_extensions(p2p);
6245                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6246                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6247                                 continue;
6248                         p2p_add_wps_vendor_extension(
6249                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6250                 }
6251         }
6252
6253         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6254             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6255                 char country[3];
6256                 country[0] = wpa_s->conf->country[0];
6257                 country[1] = wpa_s->conf->country[1];
6258                 country[2] = 0x04;
6259                 p2p_set_country(p2p, country);
6260         }
6261
6262         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6263                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6264                                      wpa_s->conf->p2p_ssid_postfix ?
6265                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6266                                      0);
6267         }
6268
6269         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6270                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6271
6272         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6273                 u8 reg_class, channel;
6274                 int ret;
6275                 unsigned int r;
6276                 u8 channel_forced;
6277
6278                 if (wpa_s->conf->p2p_listen_reg_class &&
6279                     wpa_s->conf->p2p_listen_channel) {
6280                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6281                         channel = wpa_s->conf->p2p_listen_channel;
6282                         channel_forced = 1;
6283                 } else {
6284                         reg_class = 81;
6285                         /*
6286                          * Pick one of the social channels randomly as the
6287                          * listen channel.
6288                          */
6289                         os_get_random((u8 *) &r, sizeof(r));
6290                         channel = 1 + (r % 3) * 5;
6291                         channel_forced = 0;
6292                 }
6293                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6294                                              channel_forced);
6295                 if (ret)
6296                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6297                                    "failed: %d", ret);
6298         }
6299         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6300                 u8 op_reg_class, op_channel, cfg_op_channel;
6301                 int ret = 0;
6302                 unsigned int r;
6303                 if (wpa_s->conf->p2p_oper_reg_class &&
6304                     wpa_s->conf->p2p_oper_channel) {
6305                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6306                         op_channel = wpa_s->conf->p2p_oper_channel;
6307                         cfg_op_channel = 1;
6308                 } else {
6309                         op_reg_class = 81;
6310                         /*
6311                          * Use random operation channel from (1, 6, 11)
6312                          *if no other preference is indicated.
6313                          */
6314                         os_get_random((u8 *) &r, sizeof(r));
6315                         op_channel = 1 + (r % 3) * 5;
6316                         cfg_op_channel = 0;
6317                 }
6318                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6319                                            cfg_op_channel);
6320                 if (ret)
6321                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6322                                    "failed: %d", ret);
6323         }
6324
6325         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6326                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6327                                       wpa_s->conf->p2p_pref_chan) < 0) {
6328                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6329                                    "update failed");
6330                 }
6331
6332                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6333                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6334                                    "update failed");
6335                 }
6336         }
6337 }
6338
6339
6340 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6341                      int duration)
6342 {
6343         if (!wpa_s->ap_iface)
6344                 return -1;
6345         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6346                                    duration);
6347 }
6348
6349
6350 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6351 {
6352         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6353                 return -1;
6354
6355         wpa_s->global->cross_connection = enabled;
6356         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6357
6358         if (!enabled) {
6359                 struct wpa_supplicant *iface;
6360
6361                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6362                 {
6363                         if (iface->cross_connect_enabled == 0)
6364                                 continue;
6365
6366                         iface->cross_connect_enabled = 0;
6367                         iface->cross_connect_in_use = 0;
6368                         wpa_msg_global(iface->parent, MSG_INFO,
6369                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6370                                        iface->ifname,
6371                                        iface->cross_connect_uplink);
6372                 }
6373         }
6374
6375         return 0;
6376 }
6377
6378
6379 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6380 {
6381         struct wpa_supplicant *iface;
6382
6383         if (!uplink->global->cross_connection)
6384                 return;
6385
6386         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6387                 if (!iface->cross_connect_enabled)
6388                         continue;
6389                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6390                     0)
6391                         continue;
6392                 if (iface->ap_iface == NULL)
6393                         continue;
6394                 if (iface->cross_connect_in_use)
6395                         continue;
6396
6397                 iface->cross_connect_in_use = 1;
6398                 wpa_msg_global(iface->parent, MSG_INFO,
6399                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6400                                iface->ifname, iface->cross_connect_uplink);
6401         }
6402 }
6403
6404
6405 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6406 {
6407         struct wpa_supplicant *iface;
6408
6409         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6410                 if (!iface->cross_connect_enabled)
6411                         continue;
6412                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6413                     0)
6414                         continue;
6415                 if (!iface->cross_connect_in_use)
6416                         continue;
6417
6418                 wpa_msg_global(iface->parent, MSG_INFO,
6419                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6420                                iface->ifname, iface->cross_connect_uplink);
6421                 iface->cross_connect_in_use = 0;
6422         }
6423 }
6424
6425
6426 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6427 {
6428         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6429             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6430             wpa_s->cross_connect_disallowed)
6431                 wpas_p2p_disable_cross_connect(wpa_s);
6432         else
6433                 wpas_p2p_enable_cross_connect(wpa_s);
6434         if (!wpa_s->ap_iface &&
6435             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6436                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6437 }
6438
6439
6440 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6441 {
6442         wpas_p2p_disable_cross_connect(wpa_s);
6443         if (!wpa_s->ap_iface &&
6444             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6445                                          wpa_s, NULL))
6446                 wpas_p2p_set_group_idle_timeout(wpa_s);
6447 }
6448
6449
6450 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6451 {
6452         struct wpa_supplicant *iface;
6453
6454         if (!wpa_s->global->cross_connection)
6455                 return;
6456
6457         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6458                 if (iface == wpa_s)
6459                         continue;
6460                 if (iface->drv_flags &
6461                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6462                         continue;
6463                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6464                         continue;
6465
6466                 wpa_s->cross_connect_enabled = 1;
6467                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6468                            sizeof(wpa_s->cross_connect_uplink));
6469                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6470                            "%s to %s whenever uplink is available",
6471                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6472
6473                 if (iface->ap_iface || iface->current_ssid == NULL ||
6474                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6475                     iface->cross_connect_disallowed ||
6476                     iface->wpa_state != WPA_COMPLETED)
6477                         break;
6478
6479                 wpa_s->cross_connect_in_use = 1;
6480                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6481                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6482                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6483                 break;
6484         }
6485 }
6486
6487
6488 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6489 {
6490         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6491             !wpa_s->p2p_in_provisioning)
6492                 return 0; /* not P2P client operation */
6493
6494         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6495                    "session overlap");
6496         if (wpa_s != wpa_s->parent)
6497                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6498         wpas_p2p_group_formation_failed(wpa_s);
6499         return 1;
6500 }
6501
6502
6503 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6504 {
6505         struct wpa_supplicant *wpa_s = eloop_ctx;
6506         wpas_p2p_notif_pbc_overlap(wpa_s);
6507 }
6508
6509
6510 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6511 {
6512         struct p2p_channels chan, cli_chan;
6513         struct wpa_supplicant *ifs;
6514
6515         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6516                 return;
6517
6518         os_memset(&chan, 0, sizeof(chan));
6519         os_memset(&cli_chan, 0, sizeof(cli_chan));
6520         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6521                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6522                            "channel list");
6523                 return;
6524         }
6525
6526         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6527
6528         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6529                 int freq;
6530                 if (!ifs->current_ssid ||
6531                     !ifs->current_ssid->p2p_group ||
6532                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6533                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6534                                 continue;
6535                 freq = ifs->current_ssid->frequency;
6536                 if (freq_included(&chan, freq)) {
6537                         wpa_dbg(ifs, MSG_DEBUG,
6538                                 "P2P GO operating frequency %d MHz in valid range",
6539                                 freq);
6540                         continue;
6541                 }
6542
6543                 wpa_dbg(ifs, MSG_DEBUG,
6544                         "P2P GO operating in invalid frequency %d MHz", freq);
6545                 /* TODO: Consider using CSA or removing the group within
6546                  * wpa_supplicant */
6547                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6548         }
6549 }
6550
6551
6552 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6553                                      struct wpa_scan_results *scan_res)
6554 {
6555         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6556 }
6557
6558
6559 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6560 {
6561         struct wpa_global *global = wpa_s->global;
6562         int found = 0;
6563         const u8 *peer;
6564
6565         if (global->p2p == NULL)
6566                 return -1;
6567
6568         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6569
6570         if (wpa_s->pending_interface_name[0] &&
6571             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6572                 found = 1;
6573
6574         peer = p2p_get_go_neg_peer(global->p2p);
6575         if (peer) {
6576                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6577                            MACSTR, MAC2STR(peer));
6578                 p2p_unauthorize(global->p2p, peer);
6579                 found = 1;
6580         }
6581
6582         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6583                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6584                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6585                 found = 1;
6586         }
6587
6588         if (wpa_s->pending_pd_before_join) {
6589                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6590                 wpa_s->pending_pd_before_join = 0;
6591                 found = 1;
6592         }
6593
6594         wpas_p2p_stop_find(wpa_s);
6595
6596         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6597                 if (wpa_s == global->p2p_group_formation &&
6598                     (wpa_s->p2p_in_provisioning ||
6599                      wpa_s->parent->pending_interface_type ==
6600                      WPA_IF_P2P_CLIENT)) {
6601                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6602                                    "formation found - cancelling",
6603                                    wpa_s->ifname);
6604                         found = 1;
6605                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6606                                              wpa_s->parent, NULL);
6607                         if (wpa_s->p2p_in_provisioning) {
6608                                 wpas_group_formation_completed(wpa_s, 0);
6609                                 break;
6610                         }
6611                         wpas_p2p_group_delete(wpa_s,
6612                                               P2P_GROUP_REMOVAL_REQUESTED);
6613                         break;
6614                 } else if (wpa_s->p2p_in_invitation) {
6615                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6616                                    wpa_s->ifname);
6617                         found = 1;
6618                         wpas_p2p_group_formation_failed(wpa_s);
6619                 }
6620         }
6621
6622         if (!found) {
6623                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6624                 return -1;
6625         }
6626
6627         return 0;
6628 }
6629
6630
6631 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6632 {
6633         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6634                 return;
6635
6636         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6637                    "being available anymore");
6638         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6639 }
6640
6641
6642 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6643                                    int freq_24, int freq_5, int freq_overall)
6644 {
6645         struct p2p_data *p2p = wpa_s->global->p2p;
6646         if (p2p == NULL)
6647                 return;
6648         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6649 }
6650
6651
6652 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6653 {
6654         u8 peer[ETH_ALEN];
6655         struct p2p_data *p2p = wpa_s->global->p2p;
6656
6657         if (p2p == NULL)
6658                 return -1;
6659
6660         if (hwaddr_aton(addr, peer))
6661                 return -1;
6662
6663         return p2p_unauthorize(p2p, peer);
6664 }
6665
6666
6667 /**
6668  * wpas_p2p_disconnect - Disconnect from a P2P Group
6669  * @wpa_s: Pointer to wpa_supplicant data
6670  * Returns: 0 on success, -1 on failure
6671  *
6672  * This can be used to disconnect from a group in which the local end is a P2P
6673  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6674  * virtual network interface was created for this group, that interface will be
6675  * removed. Otherwise, only the configured P2P group network will be removed
6676  * from the interface.
6677  */
6678 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6679 {
6680
6681         if (wpa_s == NULL)
6682                 return -1;
6683
6684         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6685                 -1 : 0;
6686 }
6687
6688
6689 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6690 {
6691         int ret;
6692
6693         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6694                 return 0;
6695
6696         ret = p2p_in_progress(wpa_s->global->p2p);
6697         if (ret == 0) {
6698                 /*
6699                  * Check whether there is an ongoing WPS provisioning step (or
6700                  * other parts of group formation) on another interface since
6701                  * p2p_in_progress() does not report this to avoid issues for
6702                  * scans during such provisioning step.
6703                  */
6704                 if (wpa_s->global->p2p_group_formation &&
6705                     wpa_s->global->p2p_group_formation != wpa_s) {
6706                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6707                                 "in group formation",
6708                                 wpa_s->global->p2p_group_formation->ifname);
6709                         ret = 1;
6710                 }
6711         }
6712
6713         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6714                 struct os_reltime now;
6715                 os_get_reltime(&now);
6716                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6717                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6718                         /* Wait for the first client has expired */
6719                         wpa_s->global->p2p_go_wait_client.sec = 0;
6720                 } else {
6721                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6722                         ret = 1;
6723                 }
6724         }
6725
6726         return ret;
6727 }
6728
6729
6730 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6731                               struct wpa_ssid *ssid)
6732 {
6733         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6734             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6735                                  wpa_s->parent, NULL) > 0) {
6736                 /**
6737                  * Remove the network by scheduling the group formation
6738                  * timeout to happen immediately. The teardown code
6739                  * needs to be scheduled to run asynch later so that we
6740                  * don't delete data from under ourselves unexpectedly.
6741                  * Calling wpas_p2p_group_formation_timeout directly
6742                  * causes a series of crashes in WPS failure scenarios.
6743                  */
6744                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6745                            "P2P group network getting removed");
6746                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6747                                        wpa_s->parent, NULL);
6748         }
6749 }
6750
6751
6752 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6753                                           const u8 *addr, const u8 *ssid,
6754                                           size_t ssid_len)
6755 {
6756         struct wpa_ssid *s;
6757         size_t i;
6758
6759         for (s = wpa_s->conf->ssid; s; s = s->next) {
6760                 if (s->disabled != 2)
6761                         continue;
6762                 if (ssid &&
6763                     (ssid_len != s->ssid_len ||
6764                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6765                         continue;
6766                 if (addr == NULL) {
6767                         if (s->mode == WPAS_MODE_P2P_GO)
6768                                 return s;
6769                         continue;
6770                 }
6771                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6772                         return s; /* peer is GO in the persistent group */
6773                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6774                         continue;
6775                 for (i = 0; i < s->num_p2p_clients; i++) {
6776                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6777                                       addr, ETH_ALEN) == 0)
6778                                 return s; /* peer is P2P client in persistent
6779                                            * group */
6780                 }
6781         }
6782
6783         return NULL;
6784 }
6785
6786
6787 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6788                                        const u8 *addr)
6789 {
6790         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6791                                  wpa_s->parent, NULL) > 0) {
6792                 /*
6793                  * This can happen if WPS provisioning step is not terminated
6794                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6795                  * peer was able to connect, there is no need to time out group
6796                  * formation after this, though. In addition, this is used with
6797                  * the initial connection wait on the GO as a separate formation
6798                  * timeout and as such, expected to be hit after the initial WPS
6799                  * provisioning step.
6800                  */
6801                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6802         }
6803         if (!wpa_s->p2p_go_group_formation_completed) {
6804                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6805                 wpa_s->p2p_go_group_formation_completed = 1;
6806                 wpa_s->global->p2p_group_formation = NULL;
6807                 wpa_s->p2p_in_provisioning = 0;
6808                 wpa_s->p2p_in_invitation = 0;
6809         }
6810         wpa_s->global->p2p_go_wait_client.sec = 0;
6811         if (addr == NULL)
6812                 return;
6813         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6814 }
6815
6816
6817 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6818                                         int group_added)
6819 {
6820         struct wpa_supplicant *group = wpa_s;
6821         if (wpa_s->global->p2p_group_formation)
6822                 group = wpa_s->global->p2p_group_formation;
6823         wpa_s = wpa_s->parent;
6824         offchannel_send_action_done(wpa_s);
6825         if (group_added)
6826                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6827         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6828         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6829                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6830                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6831                          wpa_s->p2p_persistent_id,
6832                          wpa_s->p2p_pd_before_go_neg,
6833                          wpa_s->p2p_go_ht40,
6834                          wpa_s->p2p_go_vht);
6835 }
6836
6837
6838 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6839 {
6840         if (!wpa_s->p2p_fallback_to_go_neg ||
6841             wpa_s->p2p_in_provisioning <= 5)
6842                 return 0;
6843
6844         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6845                 return 0; /* peer operating as a GO */
6846
6847         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6848                 "fallback to GO Negotiation");
6849         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6850
6851         return 1;
6852 }
6853
6854
6855 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6856 {
6857         struct wpa_supplicant *ifs;
6858
6859         if (wpa_s->wpa_state > WPA_SCANNING) {
6860                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6861                         "concurrent operation",
6862                         wpa_s->conf->p2p_search_delay);
6863                 return wpa_s->conf->p2p_search_delay;
6864         }
6865
6866         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6867                          radio_list) {
6868                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6869                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6870                                 "delay due to concurrent operation on "
6871                                 "interface %s",
6872                                 wpa_s->conf->p2p_search_delay,
6873                                 ifs->ifname);
6874                         return wpa_s->conf->p2p_search_delay;
6875                 }
6876         }
6877
6878         return 0;
6879 }
6880
6881
6882 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6883                                      struct wpa_ssid *s, const u8 *addr,
6884                                      int iface_addr)
6885 {
6886         struct psk_list_entry *psk, *tmp;
6887         int changed = 0;
6888
6889         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6890                               list) {
6891                 if ((iface_addr && !psk->p2p &&
6892                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6893                     (!iface_addr && psk->p2p &&
6894                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6895                         wpa_dbg(wpa_s, MSG_DEBUG,
6896                                 "P2P: Remove persistent group PSK list entry for "
6897                                 MACSTR " p2p=%u",
6898                                 MAC2STR(psk->addr), psk->p2p);
6899                         dl_list_del(&psk->list);
6900                         os_free(psk);
6901                         changed++;
6902                 }
6903         }
6904
6905         return changed;
6906 }
6907
6908
6909 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6910                          const u8 *p2p_dev_addr,
6911                          const u8 *psk, size_t psk_len)
6912 {
6913         struct wpa_ssid *ssid = wpa_s->current_ssid;
6914         struct wpa_ssid *persistent;
6915         struct psk_list_entry *p, *last;
6916
6917         if (psk_len != sizeof(p->psk))
6918                 return;
6919
6920         if (p2p_dev_addr) {
6921                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6922                         " p2p_dev_addr=" MACSTR,
6923                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6924                 if (is_zero_ether_addr(p2p_dev_addr))
6925                         p2p_dev_addr = NULL;
6926         } else {
6927                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6928                         MAC2STR(mac_addr));
6929         }
6930
6931         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6932                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6933                 /* To be added to persistent group once created */
6934                 if (wpa_s->global->add_psk == NULL) {
6935                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6936                         if (wpa_s->global->add_psk == NULL)
6937                                 return;
6938                 }
6939                 p = wpa_s->global->add_psk;
6940                 if (p2p_dev_addr) {
6941                         p->p2p = 1;
6942                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6943                 } else {
6944                         p->p2p = 0;
6945                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6946                 }
6947                 os_memcpy(p->psk, psk, psk_len);
6948                 return;
6949         }
6950
6951         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6952                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6953                 return;
6954         }
6955
6956         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6957                                              ssid->ssid_len);
6958         if (!persistent) {
6959                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6960                 return;
6961         }
6962
6963         p = os_zalloc(sizeof(*p));
6964         if (p == NULL)
6965                 return;
6966         if (p2p_dev_addr) {
6967                 p->p2p = 1;
6968                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6969         } else {
6970                 p->p2p = 0;
6971                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6972         }
6973         os_memcpy(p->psk, psk, psk_len);
6974
6975         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
6976             (last = dl_list_last(&persistent->psk_list,
6977                                  struct psk_list_entry, list))) {
6978                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6979                         MACSTR " (p2p=%u) to make room for a new one",
6980                         MAC2STR(last->addr), last->p2p);
6981                 dl_list_del(&last->list);
6982                 os_free(last);
6983         }
6984
6985         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6986                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6987                                   p2p_dev_addr == NULL);
6988         if (p2p_dev_addr) {
6989                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6990                         MACSTR, MAC2STR(p2p_dev_addr));
6991         } else {
6992                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6993                         MAC2STR(mac_addr));
6994         }
6995         dl_list_add(&persistent->psk_list, &p->list);
6996
6997         if (wpa_s->parent->conf->update_config &&
6998             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6999                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7000 }
7001
7002
7003 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7004                                 struct wpa_ssid *s, const u8 *addr,
7005                                 int iface_addr)
7006 {
7007         int res;
7008
7009         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7010         if (res > 0 && wpa_s->conf->update_config &&
7011             wpa_config_write(wpa_s->confname, wpa_s->conf))
7012                 wpa_dbg(wpa_s, MSG_DEBUG,
7013                         "P2P: Failed to update configuration");
7014 }
7015
7016
7017 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7018                                       const u8 *peer, int iface_addr)
7019 {
7020         struct hostapd_data *hapd;
7021         struct hostapd_wpa_psk *psk, *prev, *rem;
7022         struct sta_info *sta;
7023
7024         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7025             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7026                 return;
7027
7028         /* Remove per-station PSK entry */
7029         hapd = wpa_s->ap_iface->bss[0];
7030         prev = NULL;
7031         psk = hapd->conf->ssid.wpa_psk;
7032         while (psk) {
7033                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7034                     (!iface_addr &&
7035                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7036                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7037                                 MACSTR " iface_addr=%d",
7038                                 MAC2STR(peer), iface_addr);
7039                         if (prev)
7040                                 prev->next = psk->next;
7041                         else
7042                                 hapd->conf->ssid.wpa_psk = psk->next;
7043                         rem = psk;
7044                         psk = psk->next;
7045                         os_free(rem);
7046                 } else {
7047                         prev = psk;
7048                         psk = psk->next;
7049                 }
7050         }
7051
7052         /* Disconnect from group */
7053         if (iface_addr)
7054                 sta = ap_get_sta(hapd, peer);
7055         else
7056                 sta = ap_get_sta_p2p(hapd, peer);
7057         if (sta) {
7058                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7059                         " (iface_addr=%d) from group",
7060                         MAC2STR(peer), iface_addr);
7061                 hostapd_drv_sta_deauth(hapd, sta->addr,
7062                                        WLAN_REASON_DEAUTH_LEAVING);
7063                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7064         }
7065 }
7066
7067
7068 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7069                             int iface_addr)
7070 {
7071         struct wpa_ssid *s;
7072         struct wpa_supplicant *w;
7073
7074         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7075
7076         /* Remove from any persistent group */
7077         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
7078                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7079                         continue;
7080                 if (!iface_addr)
7081                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
7082                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
7083         }
7084
7085         /* Remove from any operating group */
7086         for (w = wpa_s->global->ifaces; w; w = w->next)
7087                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7088 }
7089
7090
7091 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7092 {
7093         struct wpa_supplicant *wpa_s = eloop_ctx;
7094         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7095 }
7096
7097
7098 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7099 {
7100         struct wpa_supplicant *wpa_s = eloop_ctx;
7101
7102         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7103         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7104 }
7105
7106
7107 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7108                                         struct wpa_ssid *ssid)
7109 {
7110         struct wpa_supplicant *iface;
7111
7112         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7113                 if (!iface->current_ssid ||
7114                     iface->current_ssid->frequency == freq ||
7115                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7116                      !iface->current_ssid->p2p_group))
7117                         continue;
7118
7119                 /* Remove the connection with least priority */
7120                 if (!wpas_is_p2p_prioritized(iface)) {
7121                         /* STA connection has priority over existing
7122                          * P2P connection, so remove the interface. */
7123                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7124                         eloop_register_timeout(0, 0,
7125                                                wpas_p2p_group_freq_conflict,
7126                                                iface, NULL);
7127                         /* If connection in progress is P2P connection, do not
7128                          * proceed for the connection. */
7129                         if (wpa_s == iface)
7130                                 return -1;
7131                         else
7132                                 return 0;
7133                 } else {
7134                         /* P2P connection has priority, disable the STA network
7135                          */
7136                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7137                                                        ssid);
7138                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7139                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7140                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7141                                   ETH_ALEN);
7142                         /* If P2P connection is in progress, continue
7143                          * connecting...*/
7144                         if (wpa_s == iface)
7145                                 return 0;
7146                         else
7147                                 return -1;
7148                 }
7149         }
7150
7151         return 0;
7152 }
7153
7154
7155 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7156 {
7157         struct wpa_ssid *ssid = wpa_s->current_ssid;
7158
7159         if (ssid == NULL || !ssid->p2p_group)
7160                 return 0;
7161
7162         if (wpa_s->p2p_last_4way_hs_fail &&
7163             wpa_s->p2p_last_4way_hs_fail == ssid) {
7164                 u8 go_dev_addr[ETH_ALEN];
7165                 struct wpa_ssid *persistent;
7166
7167                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7168                                               ssid->ssid,
7169                                               ssid->ssid_len) <= 0) {
7170                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7171                         goto disconnect;
7172                 }
7173
7174                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7175                         MACSTR, MAC2STR(go_dev_addr));
7176                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7177                                                      ssid->ssid,
7178                                                      ssid->ssid_len);
7179                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7180                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7181                         goto disconnect;
7182                 }
7183                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7184                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7185                                persistent->id);
7186         disconnect:
7187                 wpa_s->p2p_last_4way_hs_fail = NULL;
7188                 /*
7189                  * Remove the group from a timeout to avoid issues with caller
7190                  * continuing to use the interface if this is on a P2P group
7191                  * interface.
7192                  */
7193                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7194                                        wpa_s, NULL);
7195                 return 1;
7196         }
7197
7198         wpa_s->p2p_last_4way_hs_fail = ssid;
7199         return 0;
7200 }
7201
7202
7203 #ifdef CONFIG_WPS_NFC
7204
7205 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7206                                              struct wpabuf *p2p)
7207 {
7208         struct wpabuf *ret;
7209         size_t wsc_len;
7210
7211         if (p2p == NULL) {
7212                 wpabuf_free(wsc);
7213                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7214                 return NULL;
7215         }
7216
7217         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7218         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7219         if (ret == NULL) {
7220                 wpabuf_free(wsc);
7221                 wpabuf_free(p2p);
7222                 return NULL;
7223         }
7224
7225         wpabuf_put_be16(ret, wsc_len);
7226         if (wsc)
7227                 wpabuf_put_buf(ret, wsc);
7228         wpabuf_put_be16(ret, wpabuf_len(p2p));
7229         wpabuf_put_buf(ret, p2p);
7230
7231         wpabuf_free(wsc);
7232         wpabuf_free(p2p);
7233         wpa_hexdump_buf(MSG_DEBUG,
7234                         "P2P: Generated NFC connection handover message", ret);
7235
7236         if (ndef && ret) {
7237                 struct wpabuf *tmp;
7238                 tmp = ndef_build_p2p(ret);
7239                 wpabuf_free(ret);
7240                 if (tmp == NULL) {
7241                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7242                         return NULL;
7243                 }
7244                 ret = tmp;
7245         }
7246
7247         return ret;
7248 }
7249
7250
7251 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7252                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7253 {
7254         struct wpa_supplicant *iface;
7255
7256         if (go_dev_addr)
7257                 os_memset(go_dev_addr, 0, ETH_ALEN);
7258         if (ssid)
7259                 *ssid = NULL;
7260         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7261                 if (iface->wpa_state < WPA_ASSOCIATING ||
7262                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7263                     !iface->current_ssid->p2p_group ||
7264                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7265                         continue;
7266                 if (ssid)
7267                         *ssid = iface->current_ssid;
7268                 if (go_dev_addr)
7269                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7270                 return iface->assoc_freq;
7271         }
7272         return 0;
7273 }
7274
7275
7276 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7277                                           int ndef)
7278 {
7279         struct wpabuf *wsc, *p2p;
7280         struct wpa_ssid *ssid;
7281         u8 go_dev_addr[ETH_ALEN];
7282         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7283
7284         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7285                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7286                 return NULL;
7287         }
7288
7289         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7290             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7291                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7292                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7293                 return NULL;
7294         }
7295
7296         if (cli_freq == 0) {
7297                 wsc = wps_build_nfc_handover_req_p2p(
7298                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7299         } else
7300                 wsc = NULL;
7301         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7302                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7303                                          ssid ? ssid->ssid_len : 0);
7304
7305         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7306 }
7307
7308
7309 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7310                                           int ndef, int tag)
7311 {
7312         struct wpabuf *wsc, *p2p;
7313         struct wpa_ssid *ssid;
7314         u8 go_dev_addr[ETH_ALEN];
7315         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7316
7317         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7318                 return NULL;
7319
7320         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7321             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7322                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7323                 return NULL;
7324
7325         if (cli_freq == 0) {
7326                 wsc = wps_build_nfc_handover_sel_p2p(
7327                         wpa_s->parent->wps,
7328                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7329                         DEV_PW_NFC_CONNECTION_HANDOVER,
7330                         wpa_s->conf->wps_nfc_dh_pubkey,
7331                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7332         } else
7333                 wsc = NULL;
7334         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7335                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7336                                          ssid ? ssid->ssid_len : 0);
7337
7338         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7339 }
7340
7341
7342 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7343                                    struct p2p_nfc_params *params)
7344 {
7345         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7346                    "connection handover (freq=%d)",
7347                    params->go_freq);
7348
7349         if (params->go_freq && params->go_ssid_len) {
7350                 wpa_s->p2p_wps_method = WPS_NFC;
7351                 wpa_s->pending_join_wps_method = WPS_NFC;
7352                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7353                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7354                           ETH_ALEN);
7355                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7356                                            params->go_ssid,
7357                                            params->go_ssid_len);
7358         }
7359
7360         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7361                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7362                                 params->go_freq, -1, 0, 1, 1);
7363 }
7364
7365
7366 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7367                                   struct p2p_nfc_params *params, int tag)
7368 {
7369         int res, persistent;
7370         struct wpa_ssid *ssid;
7371
7372         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7373                    "connection handover");
7374         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7375                 ssid = wpa_s->current_ssid;
7376                 if (ssid == NULL)
7377                         continue;
7378                 if (ssid->mode != WPAS_MODE_P2P_GO)
7379                         continue;
7380                 if (wpa_s->ap_iface == NULL)
7381                         continue;
7382                 break;
7383         }
7384         if (wpa_s == NULL) {
7385                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7386                 return -1;
7387         }
7388
7389         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7390             DEV_PW_NFC_CONNECTION_HANDOVER &&
7391             !wpa_s->parent->p2p_oob_dev_pw) {
7392                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7393                 return -1;
7394         }
7395         res = wpas_ap_wps_add_nfc_pw(
7396                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7397                 wpa_s->parent->p2p_oob_dev_pw,
7398                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7399                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7400         if (res)
7401                 return res;
7402
7403         if (!tag) {
7404                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7405                 return 0;
7406         }
7407
7408         if (!params->peer ||
7409             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7410                 return 0;
7411
7412         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7413                    " to join", MAC2STR(params->peer->p2p_device_addr));
7414
7415         wpa_s->global->p2p_invite_group = wpa_s;
7416         persistent = ssid->p2p_persistent_group &&
7417                 wpas_p2p_get_persistent(wpa_s->parent,
7418                                         params->peer->p2p_device_addr,
7419                                         ssid->ssid, ssid->ssid_len);
7420         wpa_s->parent->pending_invite_ssid_id = -1;
7421
7422         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7423                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7424                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7425                           wpa_s->global->p2p_dev_addr, persistent, 0,
7426                           wpa_s->parent->p2p_oob_dev_pw_id);
7427 }
7428
7429
7430 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7431                                     struct p2p_nfc_params *params,
7432                                     int forced_freq)
7433 {
7434         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7435                    "connection handover");
7436         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7437                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7438                                 forced_freq, -1, 0, 1, 1);
7439 }
7440
7441
7442 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7443                                     struct p2p_nfc_params *params,
7444                                     int forced_freq)
7445 {
7446         int res;
7447
7448         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7449                    "connection handover");
7450         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7451                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7452                                forced_freq, -1, 0, 1, 1);
7453         if (res)
7454                 return res;
7455
7456         res = wpas_p2p_listen(wpa_s, 60);
7457         if (res) {
7458                 p2p_unauthorize(wpa_s->global->p2p,
7459                                 params->peer->p2p_device_addr);
7460         }
7461
7462         return res;
7463 }
7464
7465
7466 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7467                                             const struct wpabuf *data,
7468                                             int sel, int tag, int forced_freq)
7469 {
7470         const u8 *pos, *end;
7471         u16 len, id;
7472         struct p2p_nfc_params params;
7473         int res;
7474
7475         os_memset(&params, 0, sizeof(params));
7476         params.sel = sel;
7477
7478         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7479
7480         pos = wpabuf_head(data);
7481         end = pos + wpabuf_len(data);
7482
7483         if (end - pos < 2) {
7484                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7485                            "attributes");
7486                 return -1;
7487         }
7488         len = WPA_GET_BE16(pos);
7489         pos += 2;
7490         if (pos + len > end) {
7491                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7492                            "attributes");
7493                 return -1;
7494         }
7495         params.wsc_attr = pos;
7496         params.wsc_len = len;
7497         pos += len;
7498
7499         if (end - pos < 2) {
7500                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7501                            "attributes");
7502                 return -1;
7503         }
7504         len = WPA_GET_BE16(pos);
7505         pos += 2;
7506         if (pos + len > end) {
7507                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7508                            "attributes");
7509                 return -1;
7510         }
7511         params.p2p_attr = pos;
7512         params.p2p_len = len;
7513         pos += len;
7514
7515         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7516                     params.wsc_attr, params.wsc_len);
7517         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7518                     params.p2p_attr, params.p2p_len);
7519         if (pos < end) {
7520                 wpa_hexdump(MSG_DEBUG,
7521                             "P2P: Ignored extra data after P2P attributes",
7522                             pos, end - pos);
7523         }
7524
7525         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7526         if (res)
7527                 return res;
7528
7529         if (params.next_step == NO_ACTION)
7530                 return 0;
7531
7532         if (params.next_step == BOTH_GO) {
7533                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7534                         MAC2STR(params.peer->p2p_device_addr));
7535                 return 0;
7536         }
7537
7538         if (params.next_step == PEER_CLIENT) {
7539                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7540                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7541                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7542                                 " ssid=\"%s\"",
7543                                 MAC2STR(params.peer->p2p_device_addr),
7544                                 params.go_freq,
7545                                 MAC2STR(params.go_dev_addr),
7546                                 wpa_ssid_txt(params.go_ssid,
7547                                              params.go_ssid_len));
7548                 } else {
7549                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7550                                 "peer=" MACSTR " freq=%d",
7551                                 MAC2STR(params.peer->p2p_device_addr),
7552                                 params.go_freq);
7553                 }
7554                 return 0;
7555         }
7556
7557         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7558                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7559                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7560                 return 0;
7561         }
7562
7563         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7564         wpa_s->p2p_oob_dev_pw = NULL;
7565
7566         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7567                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7568                            "received");
7569                 return -1;
7570         }
7571
7572         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7573         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7574         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7575                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7576         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7577                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7578         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7579
7580         if (tag) {
7581                 if (id < 0x10) {
7582                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7583                                    "peer OOB Device Password Id %u", id);
7584                         return -1;
7585                 }
7586                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7587                            "Device Password Id %u", id);
7588                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7589                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7590                                 params.oob_dev_pw_len -
7591                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7592                 wpa_s->p2p_oob_dev_pw_id = id;
7593                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7594                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7595                         params.oob_dev_pw_len -
7596                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7597                 if (wpa_s->p2p_oob_dev_pw == NULL)
7598                         return -1;
7599
7600                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7601                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7602                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7603                         return -1;
7604         } else {
7605                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7606                            "without Device Password");
7607                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7608         }
7609
7610         switch (params.next_step) {
7611         case NO_ACTION:
7612         case BOTH_GO:
7613         case PEER_CLIENT:
7614                 /* already covered above */
7615                 return 0;
7616         case JOIN_GROUP:
7617                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7618         case AUTH_JOIN:
7619                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7620         case INIT_GO_NEG:
7621                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7622         case RESP_GO_NEG:
7623                 /* TODO: use own OOB Dev Pw */
7624                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7625         }
7626
7627         return -1;
7628 }
7629
7630
7631 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7632                              const struct wpabuf *data, int forced_freq)
7633 {
7634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7635                 return -1;
7636
7637         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7638 }
7639
7640
7641 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7642                                  const struct wpabuf *req,
7643                                  const struct wpabuf *sel, int forced_freq)
7644 {
7645         struct wpabuf *tmp;
7646         int ret;
7647
7648         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7649                 return -1;
7650
7651         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7652
7653         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7654                           wpabuf_head(req), wpabuf_len(req));
7655         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7656                           wpabuf_head(sel), wpabuf_len(sel));
7657         if (forced_freq)
7658                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7659         tmp = ndef_parse_p2p(init ? sel : req);
7660         if (tmp == NULL) {
7661                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7662                 return -1;
7663         }
7664
7665         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7666                                                forced_freq);
7667         wpabuf_free(tmp);
7668
7669         return ret;
7670 }
7671
7672
7673 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7674 {
7675         const u8 *if_addr;
7676         int go_intent = wpa_s->conf->p2p_go_intent;
7677         struct wpa_supplicant *iface;
7678
7679         if (wpa_s->global->p2p == NULL)
7680                 return -1;
7681
7682         if (!enabled) {
7683                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7684                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7685                 {
7686                         if (!iface->ap_iface)
7687                                 continue;
7688                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7689                 }
7690                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7691                                                  0, NULL);
7692                 if (wpa_s->p2p_nfc_tag_enabled)
7693                         wpas_p2p_remove_pending_group_interface(wpa_s);
7694                 wpa_s->p2p_nfc_tag_enabled = 0;
7695                 return 0;
7696         }
7697
7698         if (wpa_s->global->p2p_disabled)
7699                 return -1;
7700
7701         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7702             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7703             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7704             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7705                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7706                            "to allow static handover cases");
7707                 return -1;
7708         }
7709
7710         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7711
7712         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7713         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7714         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7715         if (wpa_s->p2p_oob_dev_pw == NULL)
7716                 return -1;
7717         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7718
7719         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7720             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7721                 /*
7722                  * P2P Group Interface present and the command came on group
7723                  * interface, so enable the token for the current interface.
7724                  */
7725                 wpa_s->create_p2p_iface = 0;
7726         } else {
7727                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7728         }
7729
7730         if (wpa_s->create_p2p_iface) {
7731                 enum wpa_driver_if_type iftype;
7732                 /* Prepare to add a new interface for the group */
7733                 iftype = WPA_IF_P2P_GROUP;
7734                 if (go_intent == 15)
7735                         iftype = WPA_IF_P2P_GO;
7736                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7737                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7738                                    "interface for the group");
7739                         return -1;
7740                 }
7741
7742                 if_addr = wpa_s->pending_interface_addr;
7743         } else
7744                 if_addr = wpa_s->own_addr;
7745
7746         wpa_s->p2p_nfc_tag_enabled = enabled;
7747
7748         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7749                 struct hostapd_data *hapd;
7750                 if (iface->ap_iface == NULL)
7751                         continue;
7752                 hapd = iface->ap_iface->bss[0];
7753                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7754                 hapd->conf->wps_nfc_dh_pubkey =
7755                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7756                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7757                 hapd->conf->wps_nfc_dh_privkey =
7758                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7759                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7760                 hapd->conf->wps_nfc_dev_pw =
7761                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7762                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7763
7764                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7765                         wpa_dbg(iface, MSG_DEBUG,
7766                                 "P2P: Failed to enable NFC Tag for GO");
7767                 }
7768         }
7769         p2p_set_authorized_oob_dev_pw_id(
7770                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7771                 if_addr);
7772
7773         return 0;
7774 }
7775
7776 #endif /* CONFIG_WPS_NFC */
7777
7778
7779 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
7780                                              struct wpa_used_freq_data *freqs,
7781                                              unsigned int num)
7782 {
7783         u8 curr_chan, cand, chan;
7784         unsigned int i;
7785
7786         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
7787         for (i = 0, cand = 0; i < num; i++) {
7788                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
7789                 if (curr_chan == chan) {
7790                         cand = 0;
7791                         break;
7792                 }
7793
7794                 if (chan == 1 || chan == 6 || chan == 11)
7795                         cand = chan;
7796         }
7797
7798         if (cand) {
7799                 wpa_dbg(wpa_s, MSG_DEBUG,
7800                         "P2P: Update Listen channel to %u baased on operating channel",
7801                         cand);
7802                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
7803         }
7804 }
7805
7806
7807 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
7808 {
7809         struct wpa_used_freq_data *freqs;
7810         unsigned int num = wpa_s->num_multichan_concurrent;
7811
7812         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7813                 return;
7814
7815         /*
7816          * If possible, optimize the Listen channel to be a channel that is
7817          * already used by one of the other interfaces.
7818          */
7819         if (!wpa_s->conf->p2p_optimize_listen_chan)
7820                 return;
7821
7822         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
7823                 return;
7824
7825         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7826         if (!freqs)
7827                 return;
7828
7829         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7830
7831         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7832         os_free(freqs);
7833 }
7834
7835
7836 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
7837 {
7838         if (wpa_s == wpa_s->parent)
7839                 wpas_p2p_group_remove(wpa_s, "*");
7840         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
7841                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
7842                         "the management interface is being removed");
7843                 wpas_p2p_deinit_global(wpa_s->global);
7844         }
7845 }
7846
7847
7848 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
7849 {
7850         if (wpa_s->ap_iface->bss)
7851                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
7852         wpas_p2p_group_deinit(wpa_s);
7853 }