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 && s->p2p_client_list) {
 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_p2p_group_started(struct wpa_supplicant *wpa_s,
 807                                    int go, struct wpa_ssid *ssid, int freq,
 808                                    const u8 *psk, const char *passphrase,
 809                                    const u8 *go_dev_addr, int persistent,
 810                                    const char *extra)
 811 {
 812         const char *ssid_txt;
 813         char psk_txt[65];
 814
 815         if (psk)
 816                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
 817         else
 818                 psk_txt[0] = '\0';
 819
 820         if (ssid)
 821                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 822         else
 823                 ssid_txt = "";
 824
 825         if (passphrase && passphrase[0] == '\0')
 826                 passphrase = NULL;
 827
 828         /*
 829          * Include PSK/passphrase only in the control interface message and
 830          * leave it out from the debug log entry.
 831          */
 832         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
 833                             P2P_EVENT_GROUP_STARTED
 834                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
 835                             MACSTR "%s%s",
 836                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
 837                             psk ? " psk=" : "", psk_txt,
 838                             passphrase ? " passphrase=\"" : "",
 839                             passphrase ? passphrase : "",
 840                             passphrase ? "\"" : "",
 841                             MAC2STR(go_dev_addr),
 842                             persistent ? " [PERSISTENT]" : "", extra);
 843         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
 844                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
 845                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
 846                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
 847                    extra);
 848 }
 849
 850
 851 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 852                                            int success)
 853 {
 854         struct wpa_ssid *ssid;
 855         int client;
 856         int persistent;
 857         u8 go_dev_addr[ETH_ALEN];
 858         int network_id = -1;
 859
 860         /*
 861          * This callback is likely called for the main interface. Update wpa_s
 862          * to use the group interface if a new interface was created for the
 863          * group.
 864          */
 865         if (wpa_s->global->p2p_group_formation)
 866                 wpa_s = wpa_s->global->p2p_group_formation;
 867         if (wpa_s->p2p_go_group_formation_completed) {
 868                 wpa_s->global->p2p_group_formation = NULL;
 869                 wpa_s->p2p_in_provisioning = 0;
 870         }
 871         wpa_s->p2p_in_invitation = 0;
 872
 873         if (!success) {
 874                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 875                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 876                 wpas_p2p_group_delete(wpa_s,
 877                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 878                 return;
 879         }
 880
 881         wpa_msg_global(wpa_s->parent, MSG_INFO,
 882                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 883
 884         ssid = wpa_s->current_ssid;
 885         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 886                 ssid->mode = WPAS_MODE_P2P_GO;
 887                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 888                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 889         }
 890
 891         persistent = 0;
 892         if (ssid) {
 893                 client = ssid->mode == WPAS_MODE_INFRA;
 894                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 895                         persistent = ssid->p2p_persistent_group;
 896                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 897                                   ETH_ALEN);
 898                 } else
 899                         persistent = wpas_p2p_persistent_group(wpa_s,
 900                                                                go_dev_addr,
 901                                                                ssid->ssid,
 902                                                                ssid->ssid_len);
 903         } else {
 904                 client = wpa_s->p2p_group_interface ==
 905                         P2P_GROUP_INTERFACE_CLIENT;
 906                 os_memset(go_dev_addr, 0, ETH_ALEN);
 907         }
 908
 909         wpa_s->show_group_started = 0;
 910         if (client) {
 911                 /*
 912                  * Indicate event only after successfully completed 4-way
 913                  * handshake, i.e., when the interface is ready for data
 914                  * packets.
 915                  */
 916                 wpa_s->show_group_started = 1;
 917         } else {
 918                 wpas_p2p_group_started(wpa_s, 1, ssid,
 919                                        ssid ? ssid->frequency : 0,
 920                                        ssid && ssid->passphrase == NULL &&
 921                                        ssid->psk_set ? ssid->psk : NULL,
 922                                        ssid ? ssid->passphrase : NULL,
 923                                        go_dev_addr, persistent, "");
 924                 wpas_p2p_cross_connect_setup(wpa_s);
 925                 wpas_p2p_set_group_idle_timeout(wpa_s);
 926         }
 927
 928         if (persistent)
 929                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 930                                                              ssid, go_dev_addr);
 931         else {
 932                 os_free(wpa_s->global->add_psk);
 933                 wpa_s->global->add_psk = NULL;
 934         }
 935         if (network_id < 0 && ssid)
 936                 network_id = ssid->id;
 937         if (!client) {
 938                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 939                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 940         }
 941 }
 942
 943
 944 struct send_action_work {
 945         unsigned int freq;
 946         u8 dst[ETH_ALEN];
 947         u8 src[ETH_ALEN];
 948         u8 bssid[ETH_ALEN];
 949         size_t len;
 950         unsigned int wait_time;
 951         u8 buf[0];
 952 };
 953
 954
 955 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 956                                               void *timeout_ctx)
 957 {
 958         struct wpa_supplicant *wpa_s = eloop_ctx;
 959
 960         if (!wpa_s->p2p_send_action_work)
 961                 return;
 962
 963         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 964         os_free(wpa_s->p2p_send_action_work->ctx);
 965         radio_work_done(wpa_s->p2p_send_action_work);
 966         wpa_s->p2p_send_action_work = NULL;
 967 }
 968
 969
 970 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
 971 {
 972         if (wpa_s->p2p_send_action_work) {
 973                 struct send_action_work *awork;
 974                 awork = wpa_s->p2p_send_action_work->ctx;
 975                 if (awork->wait_time == 0) {
 976                         os_free(awork);
 977                         radio_work_done(wpa_s->p2p_send_action_work);
 978                         wpa_s->p2p_send_action_work = NULL;
 979                 } else {
 980                         /*
 981                          * In theory, this should not be needed, but number of
 982                          * places in the P2P code is still using non-zero wait
 983                          * time for the last Action frame in the sequence and
 984                          * some of these do not call send_action_done().
 985                          */
 986                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 987                                              wpa_s, NULL);
 988                         eloop_register_timeout(
 989                                 0, awork->wait_time * 1000,
 990                                 wpas_p2p_send_action_work_timeout,
 991                                 wpa_s, NULL);
 992                 }
 993         }
 994 }
 995
 996
 997 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 998                                            unsigned int freq,
 999                                            const u8 *dst, const u8 *src,
1000                                            const u8 *bssid,
1001                                            const u8 *data, size_t data_len,
1002                                            enum offchannel_send_action_result
1003                                            result)
1004 {
1005         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1006
1007         wpas_p2p_action_tx_clear(wpa_s);
1008
1009         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1010                 return;
1011
1012         switch (result) {
1013         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1014                 res = P2P_SEND_ACTION_SUCCESS;
1015                 break;
1016         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1017                 res = P2P_SEND_ACTION_NO_ACK;
1018                 break;
1019         case OFFCHANNEL_SEND_ACTION_FAILED:
1020                 res = P2P_SEND_ACTION_FAILED;
1021                 break;
1022         }
1023
1024         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1025
1026         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1027             wpa_s->pending_pd_before_join &&
1028             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1029              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1030             wpa_s->p2p_fallback_to_go_neg) {
1031                 wpa_s->pending_pd_before_join = 0;
1032                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1033                         "during p2p_connect-auto");
1034                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1035                 return;
1036         }
1037 }
1038
1039
1040 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1041 {
1042         struct wpa_supplicant *wpa_s = work->wpa_s;
1043         struct send_action_work *awork = work->ctx;
1044
1045         if (deinit) {
1046                 if (work->started) {
1047                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1048                                              wpa_s, NULL);
1049                         wpa_s->p2p_send_action_work = NULL;
1050                         offchannel_send_action_done(wpa_s);
1051                 }
1052                 os_free(awork);
1053                 return;
1054         }
1055
1056         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1057                                    awork->bssid, awork->buf, awork->len,
1058                                    awork->wait_time,
1059                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1060                 os_free(awork);
1061                 radio_work_done(work);
1062                 return;
1063         }
1064         wpa_s->p2p_send_action_work = work;
1065 }
1066
1067
1068 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1069                                  unsigned int freq, const u8 *dst,
1070                                  const u8 *src, const u8 *bssid, const u8 *buf,
1071                                  size_t len, unsigned int wait_time)
1072 {
1073         struct send_action_work *awork;
1074
1075         if (wpa_s->p2p_send_action_work) {
1076                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1077                 return -1;
1078         }
1079
1080         awork = os_zalloc(sizeof(*awork) + len);
1081         if (awork == NULL)
1082                 return -1;
1083
1084         awork->freq = freq;
1085         os_memcpy(awork->dst, dst, ETH_ALEN);
1086         os_memcpy(awork->src, src, ETH_ALEN);
1087         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1088         awork->len = len;
1089         awork->wait_time = wait_time;
1090         os_memcpy(awork->buf, buf, len);
1091
1092         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1093                            wpas_send_action_cb, awork) < 0) {
1094                 os_free(awork);
1095                 return -1;
1096         }
1097
1098         return 0;
1099 }
1100
1101
1102 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1103                             const u8 *src, const u8 *bssid, const u8 *buf,
1104                             size_t len, unsigned int wait_time)
1105 {
1106         struct wpa_supplicant *wpa_s = ctx;
1107         int listen_freq = -1, send_freq = -1;
1108
1109         if (wpa_s->p2p_listen_work)
1110                 listen_freq = wpa_s->p2p_listen_work->freq;
1111         if (wpa_s->p2p_send_action_work)
1112                 send_freq = wpa_s->p2p_send_action_work->freq;
1113         if (listen_freq != (int) freq && send_freq != (int) freq) {
1114                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1115                            listen_freq, send_freq);
1116                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1117                                              len, wait_time);
1118         }
1119
1120         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1121         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1122                                       wait_time,
1123                                       wpas_p2p_send_action_tx_status, 1);
1124 }
1125
1126
1127 static void wpas_send_action_done(void *ctx)
1128 {
1129         struct wpa_supplicant *wpa_s = ctx;
1130
1131         if (wpa_s->p2p_send_action_work) {
1132                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1133                                      wpa_s, NULL);
1134                 os_free(wpa_s->p2p_send_action_work->ctx);
1135                 radio_work_done(wpa_s->p2p_send_action_work);
1136                 wpa_s->p2p_send_action_work = NULL;
1137         }
1138
1139         offchannel_send_action_done(wpa_s);
1140 }
1141
1142
1143 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1144                                     struct p2p_go_neg_results *params)
1145 {
1146         if (wpa_s->go_params == NULL) {
1147                 wpa_s->go_params = os_malloc(sizeof(*params));
1148                 if (wpa_s->go_params == NULL)
1149                         return -1;
1150         }
1151         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1152         return 0;
1153 }
1154
1155
1156 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1157                                     struct p2p_go_neg_results *res)
1158 {
1159         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1160                    " dev_addr " MACSTR " wps_method %d",
1161                    MAC2STR(res->peer_interface_addr),
1162                    MAC2STR(res->peer_device_addr), res->wps_method);
1163         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1164                           res->ssid, res->ssid_len);
1165         wpa_supplicant_ap_deinit(wpa_s);
1166         wpas_copy_go_neg_results(wpa_s, res);
1167         if (res->wps_method == WPS_PBC) {
1168                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1169 #ifdef CONFIG_WPS_NFC
1170         } else if (res->wps_method == WPS_NFC) {
1171                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1172                                    res->peer_interface_addr,
1173                                    wpa_s->parent->p2p_oob_dev_pw,
1174                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1175                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1176                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1177                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1178                                    NULL,
1179                                    NULL, 0, 0);
1180 #endif /* CONFIG_WPS_NFC */
1181         } else {
1182                 u16 dev_pw_id = DEV_PW_DEFAULT;
1183                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1184                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1185                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1186                                    wpa_s->p2p_pin, 1, dev_pw_id);
1187         }
1188 }
1189
1190
1191 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1192                                   struct wpa_ssid *ssid)
1193 {
1194         struct wpa_ssid *persistent;
1195         struct psk_list_entry *psk;
1196         struct hostapd_data *hapd;
1197
1198         if (!wpa_s->ap_iface)
1199                 return;
1200
1201         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1202                                              ssid->ssid_len);
1203         if (persistent == NULL)
1204                 return;
1205
1206         hapd = wpa_s->ap_iface->bss[0];
1207
1208         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1209                          list) {
1210                 struct hostapd_wpa_psk *hpsk;
1211
1212                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1213                         MACSTR " psk=%d",
1214                         MAC2STR(psk->addr), psk->p2p);
1215                 hpsk = os_zalloc(sizeof(*hpsk));
1216                 if (hpsk == NULL)
1217                         break;
1218                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1219                 if (psk->p2p)
1220                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1221                 else
1222                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1223                 hpsk->next = hapd->conf->ssid.wpa_psk;
1224                 hapd->conf->ssid.wpa_psk = hpsk;
1225         }
1226 }
1227
1228
1229 static void p2p_go_configured(void *ctx, void *data)
1230 {
1231         struct wpa_supplicant *wpa_s = ctx;
1232         struct p2p_go_neg_results *params = data;
1233         struct wpa_ssid *ssid;
1234         int network_id = -1;
1235
1236         ssid = wpa_s->current_ssid;
1237         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1238                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1239                 if (wpa_s->global->p2p_group_formation == wpa_s)
1240                         wpa_s->global->p2p_group_formation = NULL;
1241                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1242                                        params->passphrase[0] == '\0' ?
1243                                        params->psk : NULL,
1244                                        params->passphrase,
1245                                        wpa_s->global->p2p_dev_addr,
1246                                        params->persistent_group, "");
1247
1248                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1249                 if (params->persistent_group) {
1250                         network_id = wpas_p2p_store_persistent_group(
1251                                 wpa_s->parent, ssid,
1252                                 wpa_s->global->p2p_dev_addr);
1253                         wpas_p2p_add_psk_list(wpa_s, ssid);
1254                 }
1255                 if (network_id < 0)
1256                         network_id = ssid->id;
1257                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1258                 wpas_p2p_cross_connect_setup(wpa_s);
1259                 wpas_p2p_set_group_idle_timeout(wpa_s);
1260
1261                 if (wpa_s->p2p_first_connection_timeout) {
1262                         wpa_dbg(wpa_s, MSG_DEBUG,
1263                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1264                                 wpa_s->p2p_first_connection_timeout);
1265                         wpa_s->p2p_go_group_formation_completed = 0;
1266                         wpa_s->global->p2p_group_formation = wpa_s;
1267                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1268                                              wpa_s->parent, NULL);
1269                         eloop_register_timeout(
1270                                 wpa_s->p2p_first_connection_timeout, 0,
1271                                 wpas_p2p_group_formation_timeout,
1272                                 wpa_s->parent, NULL);
1273                 }
1274
1275                 return;
1276         }
1277
1278         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1279         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1280                                               params->peer_interface_addr)) {
1281                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1282                            "filtering");
1283                 return;
1284         }
1285         if (params->wps_method == WPS_PBC) {
1286                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1287                                           params->peer_device_addr);
1288 #ifdef CONFIG_WPS_NFC
1289         } else if (params->wps_method == WPS_NFC) {
1290                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1291                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1292                     !wpa_s->parent->p2p_oob_dev_pw) {
1293                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1294                         return;
1295                 }
1296                 wpas_ap_wps_add_nfc_pw(
1297                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1298                         wpa_s->parent->p2p_oob_dev_pw,
1299                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1300                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1301 #endif /* CONFIG_WPS_NFC */
1302         } else if (wpa_s->p2p_pin[0])
1303                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1304                                           wpa_s->p2p_pin, NULL, 0, 0);
1305         os_free(wpa_s->go_params);
1306         wpa_s->go_params = NULL;
1307 }
1308
1309
1310 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1311                               struct p2p_go_neg_results *params,
1312                               int group_formation)
1313 {
1314         struct wpa_ssid *ssid;
1315
1316         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1317         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1318                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1319                         "results");
1320                 return;
1321         }
1322
1323         ssid = wpa_config_add_network(wpa_s->conf);
1324         if (ssid == NULL) {
1325                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1326                 return;
1327         }
1328
1329         wpa_s->show_group_started = 0;
1330
1331         wpa_config_set_network_defaults(ssid);
1332         ssid->temporary = 1;
1333         ssid->p2p_group = 1;
1334         ssid->p2p_persistent_group = params->persistent_group;
1335         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1336                 WPAS_MODE_P2P_GO;
1337         ssid->frequency = params->freq;
1338         ssid->ht40 = params->ht40;
1339         ssid->vht = params->vht;
1340         ssid->ssid = os_zalloc(params->ssid_len + 1);
1341         if (ssid->ssid) {
1342                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1343                 ssid->ssid_len = params->ssid_len;
1344         }
1345         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1346         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1347         ssid->proto = WPA_PROTO_RSN;
1348         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1349         if (os_strlen(params->passphrase) > 0) {
1350                 ssid->passphrase = os_strdup(params->passphrase);
1351                 if (ssid->passphrase == NULL) {
1352                         wpa_msg_global(wpa_s, MSG_ERROR,
1353                                        "P2P: Failed to copy passphrase for GO");
1354                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1355                         return;
1356                 }
1357         } else
1358                 ssid->passphrase = NULL;
1359         ssid->psk_set = params->psk_set;
1360         if (ssid->psk_set)
1361                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1362         else if (ssid->passphrase)
1363                 wpa_config_update_psk(ssid);
1364         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1365
1366         wpa_s->ap_configured_cb = p2p_go_configured;
1367         wpa_s->ap_configured_cb_ctx = wpa_s;
1368         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1369         wpa_s->scan_req = NORMAL_SCAN_REQ;
1370         wpa_s->connect_without_scan = ssid;
1371         wpa_s->reassociate = 1;
1372         wpa_s->disconnected = 0;
1373         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1374                 "start GO)");
1375         wpa_supplicant_req_scan(wpa_s, 0, 0);
1376 }
1377
1378
1379 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1380                                   const struct wpa_supplicant *src)
1381 {
1382         struct wpa_config *d;
1383         const struct wpa_config *s;
1384
1385         d = dst->conf;
1386         s = src->conf;
1387
1388 #define C(n) if (s->n) d->n = os_strdup(s->n)
1389         C(device_name);
1390         C(manufacturer);
1391         C(model_name);
1392         C(model_number);
1393         C(serial_number);
1394         C(config_methods);
1395 #undef C
1396
1397         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1398         os_memcpy(d->sec_device_type, s->sec_device_type,
1399                   sizeof(d->sec_device_type));
1400         d->num_sec_device_types = s->num_sec_device_types;
1401
1402         d->p2p_group_idle = s->p2p_group_idle;
1403         d->p2p_intra_bss = s->p2p_intra_bss;
1404         d->persistent_reconnect = s->persistent_reconnect;
1405         d->max_num_sta = s->max_num_sta;
1406         d->pbc_in_m1 = s->pbc_in_m1;
1407         d->ignore_old_scan_res = s->ignore_old_scan_res;
1408         d->beacon_int = s->beacon_int;
1409         d->dtim_period = s->dtim_period;
1410         d->disassoc_low_ack = s->disassoc_low_ack;
1411         d->disable_scan_offload = s->disable_scan_offload;
1412
1413         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1414                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1415                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1416         }
1417 }
1418
1419
1420 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1421                                       char *ifname, size_t len)
1422 {
1423         char *ifname_ptr = wpa_s->ifname;
1424
1425         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1426                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1427                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1428         }
1429
1430         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1431         if (os_strlen(ifname) >= IFNAMSIZ &&
1432             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1433                 /* Try to avoid going over the IFNAMSIZ length limit */
1434                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1435         }
1436 }
1437
1438
1439 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1440                                         enum wpa_driver_if_type type)
1441 {
1442         char ifname[120], force_ifname[120];
1443
1444         if (wpa_s->pending_interface_name[0]) {
1445                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1446                            "- skip creation of a new one");
1447                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1448                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1449                                    "unknown?! ifname='%s'",
1450                                    wpa_s->pending_interface_name);
1451                         return -1;
1452                 }
1453                 return 0;
1454         }
1455
1456         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1457         force_ifname[0] = '\0';
1458
1459         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1460                    ifname);
1461         wpa_s->p2p_group_idx++;
1462
1463         wpa_s->pending_interface_type = type;
1464         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1465                            wpa_s->pending_interface_addr, NULL) < 0) {
1466                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1467                            "interface");
1468                 return -1;
1469         }
1470
1471         if (force_ifname[0]) {
1472                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1473                            force_ifname);
1474                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1475                            sizeof(wpa_s->pending_interface_name));
1476         } else
1477                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1478                            sizeof(wpa_s->pending_interface_name));
1479         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1480                    MACSTR, wpa_s->pending_interface_name,
1481                    MAC2STR(wpa_s->pending_interface_addr));
1482
1483         return 0;
1484 }
1485
1486
1487 static void wpas_p2p_remove_pending_group_interface(
1488         struct wpa_supplicant *wpa_s)
1489 {
1490         if (!wpa_s->pending_interface_name[0] ||
1491             is_zero_ether_addr(wpa_s->pending_interface_addr))
1492                 return; /* No pending virtual interface */
1493
1494         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1495                    wpa_s->pending_interface_name);
1496         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1497                           wpa_s->pending_interface_name);
1498         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1499         wpa_s->pending_interface_name[0] = '\0';
1500 }
1501
1502
1503 static struct wpa_supplicant *
1504 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1505 {
1506         struct wpa_interface iface;
1507         struct wpa_supplicant *group_wpa_s;
1508
1509         if (!wpa_s->pending_interface_name[0]) {
1510                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1511                 if (!wpas_p2p_create_iface(wpa_s))
1512                         return NULL;
1513                 /*
1514                  * Something has forced us to remove the pending interface; try
1515                  * to create a new one and hope for the best that we will get
1516                  * the same local address.
1517                  */
1518                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1519                                                  WPA_IF_P2P_CLIENT) < 0)
1520                         return NULL;
1521         }
1522
1523         os_memset(&iface, 0, sizeof(iface));
1524         iface.ifname = wpa_s->pending_interface_name;
1525         iface.driver = wpa_s->driver->name;
1526         if (wpa_s->conf->ctrl_interface == NULL &&
1527             wpa_s->parent != wpa_s &&
1528             wpa_s->p2p_mgmt &&
1529             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1530                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1531         else
1532                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1533         iface.driver_param = wpa_s->conf->driver_param;
1534         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1535         if (group_wpa_s == NULL) {
1536                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1537                            "wpa_supplicant interface");
1538                 return NULL;
1539         }
1540         wpa_s->pending_interface_name[0] = '\0';
1541         group_wpa_s->parent = wpa_s;
1542         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1543                 P2P_GROUP_INTERFACE_CLIENT;
1544         wpa_s->global->p2p_group_formation = group_wpa_s;
1545
1546         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1547
1548         return group_wpa_s;
1549 }
1550
1551
1552 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1553                                              void *timeout_ctx)
1554 {
1555         struct wpa_supplicant *wpa_s = eloop_ctx;
1556         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1557         wpas_p2p_group_formation_failed(wpa_s);
1558 }
1559
1560
1561 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1562 {
1563         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1564                              wpa_s->parent, NULL);
1565         if (wpa_s->global->p2p)
1566                 p2p_group_formation_failed(wpa_s->global->p2p);
1567         wpas_group_formation_completed(wpa_s, 0);
1568 }
1569
1570
1571 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1572 {
1573         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1574         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1575                              wpa_s->parent, NULL);
1576         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1577                                wpa_s->parent, NULL);
1578         wpa_s->global->p2p_fail_on_wps_complete = 0;
1579 }
1580
1581
1582 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1583 {
1584         if (wpa_s->global->p2p_group_formation != wpa_s)
1585                 return;
1586         /* Speed up group formation timeout since this cannot succeed */
1587         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1588                              wpa_s->parent, NULL);
1589         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1590                                wpa_s->parent, NULL);
1591 }
1592
1593
1594 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1595 {
1596         struct wpa_supplicant *wpa_s = ctx;
1597
1598         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1599                 wpa_drv_cancel_remain_on_channel(wpa_s);
1600                 wpa_s->off_channel_freq = 0;
1601                 wpa_s->roc_waiting_drv_freq = 0;
1602         }
1603
1604         if (res->status) {
1605                 wpa_msg_global(wpa_s, MSG_INFO,
1606                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1607                                res->status);
1608                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1609                 wpas_p2p_remove_pending_group_interface(wpa_s);
1610                 return;
1611         }
1612
1613         if (wpa_s->p2p_go_ht40)
1614                 res->ht40 = 1;
1615         if (wpa_s->p2p_go_vht)
1616                 res->vht = 1;
1617
1618         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1619                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1620                        " wps_method=%s",
1621                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1622                        MAC2STR(res->peer_device_addr),
1623                        MAC2STR(res->peer_interface_addr),
1624                        p2p_wps_method_text(res->wps_method));
1625         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1626
1627         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1628                 struct wpa_ssid *ssid;
1629                 ssid = wpa_config_get_network(wpa_s->conf,
1630                                               wpa_s->p2p_persistent_id);
1631                 if (ssid && ssid->disabled == 2 &&
1632                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1633                         size_t len = os_strlen(ssid->passphrase);
1634                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1635                                    "on requested persistent group");
1636                         os_memcpy(res->passphrase, ssid->passphrase, len);
1637                         res->passphrase[len] = '\0';
1638                 }
1639         }
1640
1641         if (wpa_s->create_p2p_iface) {
1642                 struct wpa_supplicant *group_wpa_s =
1643                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1644                 if (group_wpa_s == NULL) {
1645                         wpas_p2p_remove_pending_group_interface(wpa_s);
1646                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1647                                              wpa_s, NULL);
1648                         wpas_p2p_group_formation_failed(wpa_s);
1649                         return;
1650                 }
1651                 if (group_wpa_s != wpa_s) {
1652                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1653                                   sizeof(group_wpa_s->p2p_pin));
1654                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1655                 }
1656                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1657                 wpa_s->pending_interface_name[0] = '\0';
1658                 group_wpa_s->p2p_in_provisioning = 1;
1659
1660                 if (res->role_go)
1661                         wpas_start_wps_go(group_wpa_s, res, 1);
1662                 else
1663                         wpas_start_wps_enrollee(group_wpa_s, res);
1664         } else {
1665                 wpa_s->p2p_in_provisioning = 1;
1666                 wpa_s->global->p2p_group_formation = wpa_s;
1667
1668                 if (res->role_go)
1669                         wpas_start_wps_go(wpa_s, res, 1);
1670                 else
1671                         wpas_start_wps_enrollee(ctx, res);
1672         }
1673
1674         wpa_s->p2p_long_listen = 0;
1675         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1676
1677         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1678         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1679                                (res->peer_config_timeout % 100) * 10000,
1680                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1681 }
1682
1683
1684 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1685 {
1686         struct wpa_supplicant *wpa_s = ctx;
1687         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1688                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1689
1690         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1691 }
1692
1693
1694 static void wpas_dev_found(void *ctx, const u8 *addr,
1695                            const struct p2p_peer_info *info,
1696                            int new_device)
1697 {
1698 #ifndef CONFIG_NO_STDOUT_DEBUG
1699         struct wpa_supplicant *wpa_s = ctx;
1700         char devtype[WPS_DEV_TYPE_BUFSIZE];
1701         char *wfd_dev_info_hex = NULL;
1702
1703 #ifdef CONFIG_WIFI_DISPLAY
1704         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1705                                                     WFD_SUBELEM_DEVICE_INFO);
1706 #endif /* CONFIG_WIFI_DISPLAY */
1707
1708         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1709                        " p2p_dev_addr=" MACSTR
1710                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1711                        "dev_capab=0x%x group_capab=0x%x%s%s%s",
1712                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1713                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1714                                             sizeof(devtype)),
1715                        info->device_name, info->config_methods,
1716                        info->dev_capab, info->group_capab,
1717                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1718                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
1719                        info->vendor_elems ? " vendor_elems=1" : "");
1720
1721         os_free(wfd_dev_info_hex);
1722 #endif /* CONFIG_NO_STDOUT_DEBUG */
1723
1724         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1725 }
1726
1727
1728 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1729 {
1730         struct wpa_supplicant *wpa_s = ctx;
1731
1732         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1733                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1734
1735         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1736 }
1737
1738
1739 static void wpas_find_stopped(void *ctx)
1740 {
1741         struct wpa_supplicant *wpa_s = ctx;
1742         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1743 }
1744
1745
1746 struct wpas_p2p_listen_work {
1747         unsigned int freq;
1748         unsigned int duration;
1749         struct wpabuf *probe_resp_ie;
1750 };
1751
1752
1753 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1754 {
1755         if (lwork == NULL)
1756                 return;
1757         wpabuf_free(lwork->probe_resp_ie);
1758         os_free(lwork);
1759 }
1760
1761
1762 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1763 {
1764         struct wpas_p2p_listen_work *lwork;
1765
1766         if (!wpa_s->p2p_listen_work)
1767                 return;
1768
1769         lwork = wpa_s->p2p_listen_work->ctx;
1770         wpas_p2p_listen_work_free(lwork);
1771         radio_work_done(wpa_s->p2p_listen_work);
1772         wpa_s->p2p_listen_work = NULL;
1773 }
1774
1775
1776 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1777 {
1778         struct wpa_supplicant *wpa_s = work->wpa_s;
1779         struct wpas_p2p_listen_work *lwork = work->ctx;
1780
1781         if (deinit) {
1782                 if (work->started) {
1783                         wpa_s->p2p_listen_work = NULL;
1784                         wpas_stop_listen(wpa_s);
1785                 }
1786                 wpas_p2p_listen_work_free(lwork);
1787                 return;
1788         }
1789
1790         wpa_s->p2p_listen_work = work;
1791
1792         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1793
1794         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1795                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1796                            "report received Probe Request frames");
1797                 wpas_p2p_listen_work_done(wpa_s);
1798                 return;
1799         }
1800
1801         wpa_s->pending_listen_freq = lwork->freq;
1802         wpa_s->pending_listen_duration = lwork->duration;
1803
1804         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1805         {
1806                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1807                            "to remain on channel (%u MHz) for Listen "
1808                            "state", lwork->freq);
1809                 wpas_p2p_listen_work_done(wpa_s);
1810                 wpa_s->pending_listen_freq = 0;
1811                 return;
1812         }
1813         wpa_s->off_channel_freq = 0;
1814         wpa_s->roc_waiting_drv_freq = lwork->freq;
1815 }
1816
1817
1818 static int wpas_start_listen(void *ctx, unsigned int freq,
1819                              unsigned int duration,
1820                              const struct wpabuf *probe_resp_ie)
1821 {
1822         struct wpa_supplicant *wpa_s = ctx;
1823         struct wpas_p2p_listen_work *lwork;
1824
1825         if (wpa_s->p2p_listen_work) {
1826                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1827                 return -1;
1828         }
1829
1830         lwork = os_zalloc(sizeof(*lwork));
1831         if (lwork == NULL)
1832                 return -1;
1833         lwork->freq = freq;
1834         lwork->duration = duration;
1835         if (probe_resp_ie) {
1836                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1837                 if (lwork->probe_resp_ie == NULL) {
1838                         wpas_p2p_listen_work_free(lwork);
1839                         return -1;
1840                 }
1841         }
1842
1843         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1844                            lwork) < 0) {
1845                 wpas_p2p_listen_work_free(lwork);
1846                 return -1;
1847         }
1848
1849         return 0;
1850 }
1851
1852
1853 static void wpas_stop_listen(void *ctx)
1854 {
1855         struct wpa_supplicant *wpa_s = ctx;
1856         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1857                 wpa_drv_cancel_remain_on_channel(wpa_s);
1858                 wpa_s->off_channel_freq = 0;
1859                 wpa_s->roc_waiting_drv_freq = 0;
1860         }
1861         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1862         wpa_drv_probe_req_report(wpa_s, 0);
1863         wpas_p2p_listen_work_done(wpa_s);
1864 }
1865
1866
1867 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1868 {
1869         struct wpa_supplicant *wpa_s = ctx;
1870         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1871 }
1872
1873
1874 /*
1875  * DNS Header section is used only to calculate compression pointers, so the
1876  * contents of this data does not matter, but the length needs to be reserved
1877  * in the virtual packet.
1878  */
1879 #define DNS_HEADER_LEN 12
1880
1881 /*
1882  * 27-octet in-memory packet from P2P specification containing two implied
1883  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1884  */
1885 #define P2P_SD_IN_MEMORY_LEN 27
1886
1887 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1888                                        u8 **spos, const u8 *end)
1889 {
1890         while (*spos < end) {
1891                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1892                 int len;
1893
1894                 if (val == 1 || val == 2) {
1895                         /* These are reserved values in RFC 1035 */
1896                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1897                                    "sequence starting with 0x%x", val);
1898                         return -1;
1899                 }
1900
1901                 if (val == 3) {
1902                         u16 offset;
1903                         u8 *spos_tmp;
1904
1905                         /* Offset */
1906                         if (*spos + 2 > end) {
1907                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1908                                            "DNS offset field");
1909                                 return -1;
1910                         }
1911
1912                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1913                         if (offset >= *spos - start) {
1914                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1915                                            "pointer offset %u", offset);
1916                                 return -1;
1917                         }
1918
1919                         (*spos) += 2;
1920                         spos_tmp = start + offset;
1921                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1922                                                            &spos_tmp,
1923                                                            *spos - 2);
1924                 }
1925
1926                 /* Label */
1927                 len = (*spos)[0] & 0x3f;
1928                 if (len == 0)
1929                         return 0;
1930
1931                 (*spos)++;
1932                 if (*spos + len > end) {
1933                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1934                                    "sequence - no room for label with length "
1935                                    "%u", len);
1936                         return -1;
1937                 }
1938
1939                 if (*upos + len + 2 > uend)
1940                         return -2;
1941
1942                 os_memcpy(*upos, *spos, len);
1943                 *spos += len;
1944                 *upos += len;
1945                 (*upos)[0] = '.';
1946                 (*upos)++;
1947                 (*upos)[0] = '\0';
1948         }
1949
1950         return 0;
1951 }
1952
1953
1954 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1955  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1956  * not large enough */
1957 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1958                                  size_t msg_len, size_t offset)
1959 {
1960         /* 27-octet in-memory packet from P2P specification */
1961         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1962                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1963         u8 *tmp, *end, *spos;
1964         char *upos, *uend;
1965         int ret = 0;
1966
1967         if (buf_len < 2)
1968                 return -1;
1969         if (offset > msg_len)
1970                 return -1;
1971
1972         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1973         if (tmp == NULL)
1974                 return -1;
1975         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1976         end = spos + msg_len;
1977         spos += offset;
1978
1979         os_memset(tmp, 0, DNS_HEADER_LEN);
1980         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1981         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1982
1983         upos = buf;
1984         uend = buf + buf_len;
1985
1986         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1987         if (ret) {
1988                 os_free(tmp);
1989                 return ret;
1990         }
1991
1992         if (upos == buf) {
1993                 upos[0] = '.';
1994                 upos[1] = '\0';
1995         } else if (upos[-1] == '.')
1996                 upos[-1] = '\0';
1997
1998         os_free(tmp);
1999         return 0;
2000 }
2001
2002
2003 static struct p2p_srv_bonjour *
2004 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
2005                              const struct wpabuf *query)
2006 {
2007         struct p2p_srv_bonjour *bsrv;
2008         size_t len;
2009
2010         len = wpabuf_len(query);
2011         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2012                          struct p2p_srv_bonjour, list) {
2013                 if (len == wpabuf_len(bsrv->query) &&
2014                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
2015                               len) == 0)
2016                         return bsrv;
2017         }
2018         return NULL;
2019 }
2020
2021
2022 static struct p2p_srv_upnp *
2023 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2024                           const char *service)
2025 {
2026         struct p2p_srv_upnp *usrv;
2027
2028         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2029                          struct p2p_srv_upnp, list) {
2030                 if (version == usrv->version &&
2031                     os_strcmp(service, usrv->service) == 0)
2032                         return usrv;
2033         }
2034         return NULL;
2035 }
2036
2037
2038 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2039                                         u8 srv_trans_id)
2040 {
2041         u8 *len_pos;
2042
2043         if (wpabuf_tailroom(resp) < 5)
2044                 return;
2045
2046         /* Length (to be filled) */
2047         len_pos = wpabuf_put(resp, 2);
2048         wpabuf_put_u8(resp, srv_proto);
2049         wpabuf_put_u8(resp, srv_trans_id);
2050         /* Status Code */
2051         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2052         /* Response Data: empty */
2053         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2054 }
2055
2056
2057 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2058                                 struct wpabuf *resp, u8 srv_trans_id)
2059 {
2060         struct p2p_srv_bonjour *bsrv;
2061         u8 *len_pos;
2062
2063         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2064
2065         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2066                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2067                 return;
2068         }
2069
2070         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2071                          struct p2p_srv_bonjour, list) {
2072                 if (wpabuf_tailroom(resp) <
2073                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2074                         return;
2075                 /* Length (to be filled) */
2076                 len_pos = wpabuf_put(resp, 2);
2077                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2078                 wpabuf_put_u8(resp, srv_trans_id);
2079                 /* Status Code */
2080                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2081                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2082                                   wpabuf_head(bsrv->resp),
2083                                   wpabuf_len(bsrv->resp));
2084                 /* Response Data */
2085                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2086                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2087                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2088                              2);
2089         }
2090 }
2091
2092
2093 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2094                                size_t query_len)
2095 {
2096         char str_rx[256], str_srv[256];
2097
2098         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2099                 return 0; /* Too short to include DNS Type and Version */
2100         if (os_memcmp(query + query_len - 3,
2101                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2102                       3) != 0)
2103                 return 0; /* Mismatch in DNS Type or Version */
2104         if (query_len == wpabuf_len(bsrv->query) &&
2105             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2106                 return 1; /* Binary match */
2107
2108         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2109                                   0))
2110                 return 0; /* Failed to uncompress query */
2111         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2112                                   wpabuf_head(bsrv->query),
2113                                   wpabuf_len(bsrv->query) - 3, 0))
2114                 return 0; /* Failed to uncompress service */
2115
2116         return os_strcmp(str_rx, str_srv) == 0;
2117 }
2118
2119
2120 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2121                                 struct wpabuf *resp, u8 srv_trans_id,
2122                                 const u8 *query, size_t query_len)
2123 {
2124         struct p2p_srv_bonjour *bsrv;
2125         u8 *len_pos;
2126         int matches = 0;
2127
2128         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2129                           query, query_len);
2130         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2131                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2132                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2133                                             srv_trans_id);
2134                 return;
2135         }
2136
2137         if (query_len == 0) {
2138                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2139                 return;
2140         }
2141
2142         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2143                          struct p2p_srv_bonjour, list) {
2144                 if (!match_bonjour_query(bsrv, query, query_len))
2145                         continue;
2146
2147                 if (wpabuf_tailroom(resp) <
2148                     5 + query_len + wpabuf_len(bsrv->resp))
2149                         return;
2150
2151                 matches++;
2152
2153                 /* Length (to be filled) */
2154                 len_pos = wpabuf_put(resp, 2);
2155                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2156                 wpabuf_put_u8(resp, srv_trans_id);
2157
2158                 /* Status Code */
2159                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2160                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2161                                   wpabuf_head(bsrv->resp),
2162                                   wpabuf_len(bsrv->resp));
2163
2164                 /* Response Data */
2165                 wpabuf_put_data(resp, query, query_len); /* Key */
2166                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2167
2168                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2169         }
2170
2171         if (matches == 0) {
2172                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2173                            "available");
2174                 if (wpabuf_tailroom(resp) < 5)
2175                         return;
2176
2177                 /* Length (to be filled) */
2178                 len_pos = wpabuf_put(resp, 2);
2179                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2180                 wpabuf_put_u8(resp, srv_trans_id);
2181
2182                 /* Status Code */
2183                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2184                 /* Response Data: empty */
2185                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2186                              2);
2187         }
2188 }
2189
2190
2191 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2192                              struct wpabuf *resp, u8 srv_trans_id)
2193 {
2194         struct p2p_srv_upnp *usrv;
2195         u8 *len_pos;
2196
2197         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2198
2199         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2200                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2201                 return;
2202         }
2203
2204         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2205                          struct p2p_srv_upnp, list) {
2206                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2207                         return;
2208
2209                 /* Length (to be filled) */
2210                 len_pos = wpabuf_put(resp, 2);
2211                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2212                 wpabuf_put_u8(resp, srv_trans_id);
2213
2214                 /* Status Code */
2215                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2216                 /* Response Data */
2217                 wpabuf_put_u8(resp, usrv->version);
2218                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2219                            usrv->service);
2220                 wpabuf_put_str(resp, usrv->service);
2221                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2222                              2);
2223         }
2224 }
2225
2226
2227 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2228                              struct wpabuf *resp, u8 srv_trans_id,
2229                              const u8 *query, size_t query_len)
2230 {
2231         struct p2p_srv_upnp *usrv;
2232         u8 *len_pos;
2233         u8 version;
2234         char *str;
2235         int count = 0;
2236
2237         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2238                           query, query_len);
2239
2240         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2241                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2242                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2243                                             srv_trans_id);
2244                 return;
2245         }
2246
2247         if (query_len == 0) {
2248                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2249                 return;
2250         }
2251
2252         if (wpabuf_tailroom(resp) < 5)
2253                 return;
2254
2255         /* Length (to be filled) */
2256         len_pos = wpabuf_put(resp, 2);
2257         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2258         wpabuf_put_u8(resp, srv_trans_id);
2259
2260         version = query[0];
2261         str = os_malloc(query_len);
2262         if (str == NULL)
2263                 return;
2264         os_memcpy(str, query + 1, query_len - 1);
2265         str[query_len - 1] = '\0';
2266
2267         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2268                          struct p2p_srv_upnp, list) {
2269                 if (version != usrv->version)
2270                         continue;
2271
2272                 if (os_strcmp(str, "ssdp:all") != 0 &&
2273                     os_strstr(usrv->service, str) == NULL)
2274                         continue;
2275
2276                 if (wpabuf_tailroom(resp) < 2)
2277                         break;
2278                 if (count == 0) {
2279                         /* Status Code */
2280                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2281                         /* Response Data */
2282                         wpabuf_put_u8(resp, version);
2283                 } else
2284                         wpabuf_put_u8(resp, ',');
2285
2286                 count++;
2287
2288                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2289                            usrv->service);
2290                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2291                         break;
2292                 wpabuf_put_str(resp, usrv->service);
2293         }
2294         os_free(str);
2295
2296         if (count == 0) {
2297                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2298                            "available");
2299                 /* Status Code */
2300                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2301                 /* Response Data: empty */
2302         }
2303
2304         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2305 }
2306
2307
2308 #ifdef CONFIG_WIFI_DISPLAY
2309 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2310                             struct wpabuf *resp, u8 srv_trans_id,
2311                             const u8 *query, size_t query_len)
2312 {
2313         const u8 *pos;
2314         u8 role;
2315         u8 *len_pos;
2316
2317         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2318
2319         if (!wpa_s->global->wifi_display) {
2320                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2321                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2322                                             srv_trans_id);
2323                 return;
2324         }
2325
2326         if (query_len < 1) {
2327                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2328                            "Role");
2329                 return;
2330         }
2331
2332         if (wpabuf_tailroom(resp) < 5)
2333                 return;
2334
2335         pos = query;
2336         role = *pos++;
2337         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2338
2339         /* TODO: role specific handling */
2340
2341         /* Length (to be filled) */
2342         len_pos = wpabuf_put(resp, 2);
2343         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2344         wpabuf_put_u8(resp, srv_trans_id);
2345         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2346
2347         while (pos < query + query_len) {
2348                 if (*pos < MAX_WFD_SUBELEMS &&
2349                     wpa_s->global->wfd_subelem[*pos] &&
2350                     wpabuf_tailroom(resp) >=
2351                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2352                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2353                                    "subelement %u", *pos);
2354                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2355                 }
2356                 pos++;
2357         }
2358
2359         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2360 }
2361 #endif /* CONFIG_WIFI_DISPLAY */
2362
2363
2364 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2365                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2366 {
2367         struct wpa_supplicant *wpa_s = ctx;
2368         const u8 *pos = tlvs;
2369         const u8 *end = tlvs + tlvs_len;
2370         const u8 *tlv_end;
2371         u16 slen;
2372         struct wpabuf *resp;
2373         u8 srv_proto, srv_trans_id;
2374         size_t buf_len;
2375         char *buf;
2376
2377         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2378                     tlvs, tlvs_len);
2379         buf_len = 2 * tlvs_len + 1;
2380         buf = os_malloc(buf_len);
2381         if (buf) {
2382                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2383                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2384                              MACSTR " %u %u %s",
2385                              freq, MAC2STR(sa), dialog_token, update_indic,
2386                              buf);
2387                 os_free(buf);
2388         }
2389
2390         if (wpa_s->p2p_sd_over_ctrl_iface) {
2391                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2392                                            update_indic, tlvs, tlvs_len);
2393                 return; /* to be processed by an external program */
2394         }
2395
2396         resp = wpabuf_alloc(10000);
2397         if (resp == NULL)
2398                 return;
2399
2400         while (pos + 1 < end) {
2401                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2402                 slen = WPA_GET_LE16(pos);
2403                 pos += 2;
2404                 if (pos + slen > end || slen < 2) {
2405                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2406                                    "length");
2407                         wpabuf_free(resp);
2408                         return;
2409                 }
2410                 tlv_end = pos + slen;
2411
2412                 srv_proto = *pos++;
2413                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2414                            srv_proto);
2415                 srv_trans_id = *pos++;
2416                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2417                            srv_trans_id);
2418
2419                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2420                             pos, tlv_end - pos);
2421
2422
2423                 if (wpa_s->force_long_sd) {
2424                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2425                                    "response");
2426                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2427                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2428                         goto done;
2429                 }
2430
2431                 switch (srv_proto) {
2432                 case P2P_SERV_ALL_SERVICES:
2433                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2434                                    "for all services");
2435                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2436                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2437                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2438                                            "discovery protocols available");
2439                                 wpas_sd_add_proto_not_avail(
2440                                         resp, P2P_SERV_ALL_SERVICES,
2441                                         srv_trans_id);
2442                                 break;
2443                         }
2444                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2445                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2446                         break;
2447                 case P2P_SERV_BONJOUR:
2448                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2449                                             pos, tlv_end - pos);
2450                         break;
2451                 case P2P_SERV_UPNP:
2452                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2453                                          pos, tlv_end - pos);
2454                         break;
2455 #ifdef CONFIG_WIFI_DISPLAY
2456                 case P2P_SERV_WIFI_DISPLAY:
2457                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2458                                         pos, tlv_end - pos);
2459                         break;
2460 #endif /* CONFIG_WIFI_DISPLAY */
2461                 default:
2462                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2463                                    "protocol %u", srv_proto);
2464                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2465                                                     srv_trans_id);
2466                         break;
2467                 }
2468
2469                 pos = tlv_end;
2470         }
2471
2472 done:
2473         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2474                                    update_indic, tlvs, tlvs_len);
2475
2476         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2477
2478         wpabuf_free(resp);
2479 }
2480
2481
2482 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2483                              const u8 *tlvs, size_t tlvs_len)
2484 {
2485         struct wpa_supplicant *wpa_s = ctx;
2486         const u8 *pos = tlvs;
2487         const u8 *end = tlvs + tlvs_len;
2488         const u8 *tlv_end;
2489         u16 slen;
2490         size_t buf_len;
2491         char *buf;
2492
2493         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2494                     tlvs, tlvs_len);
2495         if (tlvs_len > 1500) {
2496                 /* TODO: better way for handling this */
2497                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2498                              P2P_EVENT_SERV_DISC_RESP MACSTR
2499                              " %u <long response: %u bytes>",
2500                              MAC2STR(sa), update_indic,
2501                              (unsigned int) tlvs_len);
2502         } else {
2503                 buf_len = 2 * tlvs_len + 1;
2504                 buf = os_malloc(buf_len);
2505                 if (buf) {
2506                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2507                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2508                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2509                                      MAC2STR(sa), update_indic, buf);
2510                         os_free(buf);
2511                 }
2512         }
2513
2514         while (pos < end) {
2515                 u8 srv_proto, srv_trans_id, status;
2516
2517                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2518                 slen = WPA_GET_LE16(pos);
2519                 pos += 2;
2520                 if (pos + slen > end || slen < 3) {
2521                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2522                                    "length");
2523                         return;
2524                 }
2525                 tlv_end = pos + slen;
2526
2527                 srv_proto = *pos++;
2528                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2529                            srv_proto);
2530                 srv_trans_id = *pos++;
2531                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2532                            srv_trans_id);
2533                 status = *pos++;
2534                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2535                            status);
2536
2537                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2538                             pos, tlv_end - pos);
2539
2540                 pos = tlv_end;
2541         }
2542
2543         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2544 }
2545
2546
2547 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2548                         const struct wpabuf *tlvs)
2549 {
2550         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2551                 return 0;
2552         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2553 }
2554
2555
2556 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2557                              u8 version, const char *query)
2558 {
2559         struct wpabuf *tlvs;
2560         u64 ret;
2561
2562         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2563         if (tlvs == NULL)
2564                 return 0;
2565         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2566         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2567         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2568         wpabuf_put_u8(tlvs, version);
2569         wpabuf_put_str(tlvs, query);
2570         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2571         wpabuf_free(tlvs);
2572         return ret;
2573 }
2574
2575
2576 #ifdef CONFIG_WIFI_DISPLAY
2577
2578 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2579                                    const struct wpabuf *tlvs)
2580 {
2581         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2582                 return 0;
2583         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2584 }
2585
2586
2587 #define MAX_WFD_SD_SUBELEMS 20
2588
2589 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2590                                 const char *subelems)
2591 {
2592         u8 *len;
2593         const char *pos;
2594         int val;
2595         int count = 0;
2596
2597         len = wpabuf_put(tlvs, 2);
2598         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2599         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2600
2601         wpabuf_put_u8(tlvs, role);
2602
2603         pos = subelems;
2604         while (*pos) {
2605                 val = atoi(pos);
2606                 if (val >= 0 && val < 256) {
2607                         wpabuf_put_u8(tlvs, val);
2608                         count++;
2609                         if (count == MAX_WFD_SD_SUBELEMS)
2610                                 break;
2611                 }
2612                 pos = os_strchr(pos + 1, ',');
2613                 if (pos == NULL)
2614                         break;
2615                 pos++;
2616         }
2617
2618         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2619 }
2620
2621
2622 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2623                                      const u8 *dst, const char *role)
2624 {
2625         struct wpabuf *tlvs;
2626         u64 ret;
2627         const char *subelems;
2628         u8 id = 1;
2629
2630         subelems = os_strchr(role, ' ');
2631         if (subelems == NULL)
2632                 return 0;
2633         subelems++;
2634
2635         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2636         if (tlvs == NULL)
2637                 return 0;
2638
2639         if (os_strstr(role, "[source]"))
2640                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2641         if (os_strstr(role, "[pri-sink]"))
2642                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2643         if (os_strstr(role, "[sec-sink]"))
2644                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2645         if (os_strstr(role, "[source+sink]"))
2646                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2647
2648         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2649         wpabuf_free(tlvs);
2650         return ret;
2651 }
2652
2653 #endif /* CONFIG_WIFI_DISPLAY */
2654
2655
2656 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2657 {
2658         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2659                 return -1;
2660         return p2p_sd_cancel_request(wpa_s->global->p2p,
2661                                      (void *) (uintptr_t) req);
2662 }
2663
2664
2665 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2666                           const u8 *dst, u8 dialog_token,
2667                           const struct wpabuf *resp_tlvs)
2668 {
2669         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2670                 return;
2671         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2672                         resp_tlvs);
2673 }
2674
2675
2676 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2677 {
2678         if (wpa_s->global->p2p)
2679                 p2p_sd_service_update(wpa_s->global->p2p);
2680 }
2681
2682
2683 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2684 {
2685         dl_list_del(&bsrv->list);
2686         wpabuf_free(bsrv->query);
2687         wpabuf_free(bsrv->resp);
2688         os_free(bsrv);
2689 }
2690
2691
2692 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2693 {
2694         dl_list_del(&usrv->list);
2695         os_free(usrv->service);
2696         os_free(usrv);
2697 }
2698
2699
2700 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2701 {
2702         struct p2p_srv_bonjour *bsrv, *bn;
2703         struct p2p_srv_upnp *usrv, *un;
2704
2705         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2706                               struct p2p_srv_bonjour, list)
2707                 wpas_p2p_srv_bonjour_free(bsrv);
2708
2709         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2710                               struct p2p_srv_upnp, list)
2711                 wpas_p2p_srv_upnp_free(usrv);
2712
2713         wpas_p2p_sd_service_update(wpa_s);
2714 }
2715
2716
2717 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2718                                  struct wpabuf *query, struct wpabuf *resp)
2719 {
2720         struct p2p_srv_bonjour *bsrv;
2721
2722         bsrv = os_zalloc(sizeof(*bsrv));
2723         if (bsrv == NULL)
2724                 return -1;
2725         bsrv->query = query;
2726         bsrv->resp = resp;
2727         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2728
2729         wpas_p2p_sd_service_update(wpa_s);
2730         return 0;
2731 }
2732
2733
2734 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2735                                  const struct wpabuf *query)
2736 {
2737         struct p2p_srv_bonjour *bsrv;
2738
2739         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2740         if (bsrv == NULL)
2741                 return -1;
2742         wpas_p2p_srv_bonjour_free(bsrv);
2743         wpas_p2p_sd_service_update(wpa_s);
2744         return 0;
2745 }
2746
2747
2748 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2749                               const char *service)
2750 {
2751         struct p2p_srv_upnp *usrv;
2752
2753         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2754                 return 0; /* Already listed */
2755         usrv = os_zalloc(sizeof(*usrv));
2756         if (usrv == NULL)
2757                 return -1;
2758         usrv->version = version;
2759         usrv->service = os_strdup(service);
2760         if (usrv->service == NULL) {
2761                 os_free(usrv);
2762                 return -1;
2763         }
2764         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2765
2766         wpas_p2p_sd_service_update(wpa_s);
2767         return 0;
2768 }
2769
2770
2771 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2772                               const char *service)
2773 {
2774         struct p2p_srv_upnp *usrv;
2775
2776         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2777         if (usrv == NULL)
2778                 return -1;
2779         wpas_p2p_srv_upnp_free(usrv);
2780         wpas_p2p_sd_service_update(wpa_s);
2781         return 0;
2782 }
2783
2784
2785 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2786                                          const u8 *peer, const char *params,
2787                                          unsigned int generated_pin)
2788 {
2789         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2790                        " %08d%s", MAC2STR(peer), generated_pin, params);
2791 }
2792
2793
2794 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2795                                         const u8 *peer, const char *params)
2796 {
2797         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2798                        "%s", MAC2STR(peer), params);
2799 }
2800
2801
2802 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2803                                const u8 *dev_addr, const u8 *pri_dev_type,
2804                                const char *dev_name, u16 supp_config_methods,
2805                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2806                                size_t group_id_len)
2807 {
2808         struct wpa_supplicant *wpa_s = ctx;
2809         char devtype[WPS_DEV_TYPE_BUFSIZE];
2810         char params[300];
2811         u8 empty_dev_type[8];
2812         unsigned int generated_pin = 0;
2813         struct wpa_supplicant *group = NULL;
2814
2815         if (group_id) {
2816                 for (group = wpa_s->global->ifaces; group; group = group->next)
2817                 {
2818                         struct wpa_ssid *s = group->current_ssid;
2819                         if (s != NULL &&
2820                             s->mode == WPAS_MODE_P2P_GO &&
2821                             group_id_len - ETH_ALEN == s->ssid_len &&
2822                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2823                                       s->ssid_len) == 0)
2824                                 break;
2825                 }
2826         }
2827
2828         if (pri_dev_type == NULL) {
2829                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2830                 pri_dev_type = empty_dev_type;
2831         }
2832         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2833                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2834                     "dev_capab=0x%x group_capab=0x%x%s%s",
2835                     MAC2STR(dev_addr),
2836                     wps_dev_type_bin2str(pri_dev_type, devtype,
2837                                          sizeof(devtype)),
2838                     dev_name, supp_config_methods, dev_capab, group_capab,
2839                     group ? " group=" : "",
2840                     group ? group->ifname : "");
2841         params[sizeof(params) - 1] = '\0';
2842
2843         if (config_methods & WPS_CONFIG_DISPLAY) {
2844                 generated_pin = wps_generate_pin();
2845                 wpas_prov_disc_local_display(wpa_s, peer, params,
2846                                              generated_pin);
2847         } else if (config_methods & WPS_CONFIG_KEYPAD)
2848                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2849         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2850                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2851                                MACSTR "%s", MAC2STR(peer), params);
2852
2853         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2854                                             P2P_PROV_DISC_SUCCESS,
2855                                             config_methods, generated_pin);
2856 }
2857
2858
2859 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2860 {
2861         struct wpa_supplicant *wpa_s = ctx;
2862         unsigned int generated_pin = 0;
2863         char params[20];
2864
2865         if (wpa_s->pending_pd_before_join &&
2866             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2867              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2868                 wpa_s->pending_pd_before_join = 0;
2869                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2870                            "join-existing-group operation");
2871                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2872                 return;
2873         }
2874
2875         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2876             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2877                 os_snprintf(params, sizeof(params), " peer_go=%d",
2878                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2879         else
2880                 params[0] = '\0';
2881
2882         if (config_methods & WPS_CONFIG_DISPLAY)
2883                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2884         else if (config_methods & WPS_CONFIG_KEYPAD) {
2885                 generated_pin = wps_generate_pin();
2886                 wpas_prov_disc_local_display(wpa_s, peer, params,
2887                                              generated_pin);
2888         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2889                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2890                                MACSTR "%s", MAC2STR(peer), params);
2891
2892         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2893                                             P2P_PROV_DISC_SUCCESS,
2894                                             config_methods, generated_pin);
2895 }
2896
2897
2898 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2899                                 enum p2p_prov_disc_status status)
2900 {
2901         struct wpa_supplicant *wpa_s = ctx;
2902
2903         if (wpa_s->p2p_fallback_to_go_neg) {
2904                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2905                         "failed - fall back to GO Negotiation");
2906                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2907                 return;
2908         }
2909
2910         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2911                 wpa_s->pending_pd_before_join = 0;
2912                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2913                            "join-existing-group operation (no ACK for PD "
2914                            "Req attempts)");
2915                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2916                 return;
2917         }
2918
2919         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2920                        " p2p_dev_addr=" MACSTR " status=%d",
2921                        MAC2STR(peer), status);
2922
2923         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2924                                             status, 0, 0);
2925 }
2926
2927
2928 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2929 {
2930         if (channels == NULL)
2931                 return 1; /* Assume no restrictions */
2932         return p2p_channels_includes_freq(channels, freq);
2933
2934 }
2935
2936
2937 /**
2938  * Pick the best frequency to use from all the currently used frequencies.
2939  */
2940 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2941                                         struct wpa_used_freq_data *freqs,
2942                                         unsigned int num)
2943 {
2944         unsigned int i, c;
2945
2946         /* find a candidate freq that is supported by P2P */
2947         for (c = 0; c < num; c++)
2948                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2949                         break;
2950
2951         if (c == num)
2952                 return 0;
2953
2954         /* once we have a candidate, try to find a 'better' one */
2955         for (i = c + 1; i < num; i++) {
2956                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2957                         continue;
2958
2959                 /*
2960                  * 1. Infrastructure station interfaces have higher preference.
2961                  * 2. P2P Clients have higher preference.
2962                  * 3. All others.
2963                  */
2964                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2965                         c = i;
2966                         break;
2967                 }
2968
2969                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2970                         c = i;
2971         }
2972         return freqs[c].freq;
2973 }
2974
2975
2976 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2977                                   const u8 *go_dev_addr, const u8 *ssid,
2978                                   size_t ssid_len, int *go, u8 *group_bssid,
2979                                   int *force_freq, int persistent_group,
2980                                   const struct p2p_channels *channels,
2981                                   int dev_pw_id)
2982 {
2983         struct wpa_supplicant *wpa_s = ctx;
2984         struct wpa_ssid *s;
2985         struct wpa_used_freq_data *freqs;
2986         struct wpa_supplicant *grp;
2987         int best_freq;
2988
2989         if (!persistent_group) {
2990                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2991                            " to join an active group (SSID: %s)",
2992                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2993                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2994                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2995                      == 0 ||
2996                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2997                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2998                                    "authorized invitation");
2999                         goto accept_inv;
3000                 }
3001
3002 #ifdef CONFIG_WPS_NFC
3003                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
3004                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
3005                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
3006                         wpa_s->parent->p2p_wps_method = WPS_NFC;
3007                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
3008                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
3009                                   go_dev_addr, ETH_ALEN);
3010                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
3011                                   bssid, ETH_ALEN);
3012                         goto accept_inv;
3013                 }
3014 #endif /* CONFIG_WPS_NFC */
3015
3016                 /*
3017                  * Do not accept the invitation automatically; notify user and
3018                  * request approval.
3019                  */
3020                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3021         }
3022
3023         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
3024         if (grp) {
3025                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
3026                            "running persistent group");
3027                 if (*go)
3028                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
3029                 goto accept_inv;
3030         }
3031
3032         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
3033             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
3034                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
3035                            "invitation to re-invoke a persistent group");
3036                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
3037         } else if (!wpa_s->conf->persistent_reconnect)
3038                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
3039
3040         for (s = wpa_s->conf->ssid; s; s = s->next) {
3041                 if (s->disabled == 2 &&
3042                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
3043                     s->ssid_len == ssid_len &&
3044                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3045                         break;
3046         }
3047
3048         if (!s) {
3049                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
3050                            " requested reinvocation of an unknown group",
3051                            MAC2STR(sa));
3052                 return P2P_SC_FAIL_UNKNOWN_GROUP;
3053         }
3054
3055         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
3056                 *go = 1;
3057                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3058                         wpa_printf(MSG_DEBUG, "P2P: The only available "
3059                                    "interface is already in use - reject "
3060                                    "invitation");
3061                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3062                 }
3063                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3064         } else if (s->mode == WPAS_MODE_P2P_GO) {
3065                 *go = 1;
3066                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3067                 {
3068                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3069                                    "interface address for the group");
3070                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3071                 }
3072                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3073                           ETH_ALEN);
3074         }
3075
3076 accept_inv:
3077         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3078
3079         best_freq = 0;
3080         freqs = os_calloc(wpa_s->num_multichan_concurrent,
3081                           sizeof(struct wpa_used_freq_data));
3082         if (freqs) {
3083                 int num_channels = wpa_s->num_multichan_concurrent;
3084                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3085                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3086                 os_free(freqs);
3087         }
3088
3089         /* Get one of the frequencies currently in use */
3090         if (best_freq > 0) {
3091                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3092                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3093
3094                 if (wpa_s->num_multichan_concurrent < 2 ||
3095                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3096                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3097                         *force_freq = best_freq;
3098                 }
3099         }
3100
3101         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3102             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3103                 if (*go == 0) {
3104                         /* We are the client */
3105                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3106                                    "running a GO but we are capable of MCC, "
3107                                    "figure out the best channel to use");
3108                         *force_freq = 0;
3109                 } else if (!freq_included(channels, *force_freq)) {
3110                         /* We are the GO, and *force_freq is not in the
3111                          * intersection */
3112                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3113                                    "in intersection but we are capable of MCC, "
3114                                    "figure out the best channel to use",
3115                                    *force_freq);
3116                         *force_freq = 0;
3117                 }
3118         }
3119
3120         return P2P_SC_SUCCESS;
3121 }
3122
3123
3124 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3125                                      const u8 *ssid, size_t ssid_len,
3126                                      const u8 *go_dev_addr, u8 status,
3127                                      int op_freq)
3128 {
3129         struct wpa_supplicant *wpa_s = ctx;
3130         struct wpa_ssid *s;
3131
3132         for (s = wpa_s->conf->ssid; s; s = s->next) {
3133                 if (s->disabled == 2 &&
3134                     s->ssid_len == ssid_len &&
3135                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3136                         break;
3137         }
3138
3139         if (status == P2P_SC_SUCCESS) {
3140                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3141                            " was accepted; op_freq=%d MHz, SSID=%s",
3142                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3143                 if (s) {
3144                         int go = s->mode == WPAS_MODE_P2P_GO;
3145                         wpas_p2p_group_add_persistent(
3146                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3147                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3148                 } else if (bssid) {
3149                         wpa_s->user_initiated_pd = 0;
3150                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3151                                       wpa_s->p2p_wps_method, 0, op_freq,
3152                                       ssid, ssid_len);
3153                 }
3154                 return;
3155         }
3156
3157         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3158                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3159                            " was rejected (status %u)", MAC2STR(sa), status);
3160                 return;
3161         }
3162
3163         if (!s) {
3164                 if (bssid) {
3165                         wpa_msg_global(wpa_s, MSG_INFO,
3166                                        P2P_EVENT_INVITATION_RECEIVED
3167                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3168                                        " bssid=" MACSTR " unknown-network",
3169                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3170                                        MAC2STR(bssid));
3171                 } else {
3172                         wpa_msg_global(wpa_s, MSG_INFO,
3173                                        P2P_EVENT_INVITATION_RECEIVED
3174                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3175                                        " unknown-network",
3176                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3177                 }
3178                 return;
3179         }
3180
3181         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3182                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3183                                "sa=" MACSTR " persistent=%d freq=%d",
3184                                MAC2STR(sa), s->id, op_freq);
3185         } else {
3186                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3187                                "sa=" MACSTR " persistent=%d",
3188                                MAC2STR(sa), s->id);
3189         }
3190 }
3191
3192
3193 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3194                                         struct wpa_ssid *ssid,
3195                                         const u8 *peer, int inv)
3196 {
3197         size_t i;
3198
3199         if (ssid == NULL)
3200                 return;
3201
3202         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3203                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3204                               ETH_ALEN) == 0)
3205                         break;
3206         }
3207         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3208                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3209                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3210                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3211                                    "due to invitation result", ssid->id);
3212                         wpas_notify_network_removed(wpa_s, ssid);
3213                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3214                         return;
3215                 }
3216                 return; /* Peer not found in client list */
3217         }
3218
3219         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3220                    "group %d client list%s",
3221                    MAC2STR(peer), ssid->id,
3222                    inv ? " due to invitation result" : "");
3223         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3224                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3225                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3226         ssid->num_p2p_clients--;
3227         if (wpa_s->parent->conf->update_config &&
3228             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3229                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3230 }
3231
3232
3233 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3234                                           const u8 *peer)
3235 {
3236         struct wpa_ssid *ssid;
3237
3238         wpa_s = wpa_s->global->p2p_invite_group;
3239         if (wpa_s == NULL)
3240                 return; /* No known invitation group */
3241         ssid = wpa_s->current_ssid;
3242         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3243             !ssid->p2p_persistent_group)
3244                 return; /* Not operating as a GO in persistent group */
3245         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3246                                        ssid->ssid, ssid->ssid_len);
3247         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3248 }
3249
3250
3251 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3252                                    const struct p2p_channels *channels,
3253                                    const u8 *peer, int neg_freq,
3254                                    int peer_oper_freq)
3255 {
3256         struct wpa_supplicant *wpa_s = ctx;
3257         struct wpa_ssid *ssid;
3258         int freq;
3259
3260         if (bssid) {
3261                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3262                                "status=%d " MACSTR,
3263                                status, MAC2STR(bssid));
3264         } else {
3265                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3266                                "status=%d ", status);
3267         }
3268         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3269
3270         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3271                    status, MAC2STR(peer));
3272         if (wpa_s->pending_invite_ssid_id == -1) {
3273                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3274                         wpas_remove_persistent_client(wpa_s, peer);
3275                 return; /* Invitation to active group */
3276         }
3277
3278         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3279                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3280                            "invitation exchange to indicate readiness for "
3281                            "re-invocation");
3282         }
3283
3284         if (status != P2P_SC_SUCCESS) {
3285                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3286                         ssid = wpa_config_get_network(
3287                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3288                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3289                 }
3290                 wpas_p2p_remove_pending_group_interface(wpa_s);
3291                 return;
3292         }
3293
3294         ssid = wpa_config_get_network(wpa_s->conf,
3295                                       wpa_s->pending_invite_ssid_id);
3296         if (ssid == NULL) {
3297                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3298                            "data matching with invitation");
3299                 return;
3300         }
3301
3302         /*
3303          * The peer could have missed our ctrl::ack frame for Invitation
3304          * Response and continue retransmitting the frame. To reduce the
3305          * likelihood of the peer not getting successful TX status for the
3306          * Invitation Response frame, wait a short time here before starting
3307          * the persistent group so that we will remain on the current channel to
3308          * acknowledge any possible retransmission from the peer.
3309          */
3310         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3311                 "starting persistent group");
3312         os_sleep(0, 50000);
3313
3314         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3315             freq_included(channels, neg_freq))
3316                 freq = neg_freq;
3317         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3318                  freq_included(channels, peer_oper_freq))
3319                 freq = peer_oper_freq;
3320         else
3321                 freq = 0;
3322
3323         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3324                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3325         wpas_p2p_group_add_persistent(wpa_s, ssid,
3326                                       ssid->mode == WPAS_MODE_P2P_GO,
3327                                       wpa_s->p2p_persistent_go_freq,
3328                                       freq,
3329                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3330                                       channels,
3331                                       ssid->mode == WPAS_MODE_P2P_GO ?
3332                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3333                                       0);
3334 }
3335
3336
3337 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3338                                     unsigned int freq)
3339 {
3340         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3341                 return 1;
3342         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3343 }
3344
3345
3346 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3347 {
3348         reg->channel[reg->channels] = chan;
3349         reg->channels++;
3350 }
3351
3352
3353 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3354                                      struct p2p_channels *chan,
3355                                      struct p2p_channels *cli_chan)
3356 {
3357         int i, cla = 0;
3358
3359         os_memset(cli_chan, 0, sizeof(*cli_chan));
3360
3361         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3362                    "band");
3363
3364         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3365         chan->reg_class[cla].reg_class = 81;
3366         chan->reg_class[cla].channels = 0;
3367         for (i = 0; i < 11; i++) {
3368                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3369                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3370         }
3371         if (chan->reg_class[cla].channels)
3372                 cla++;
3373
3374         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3375                    "band");
3376
3377         /* Operating class 115 - 5 GHz, channels 36-48 */
3378         chan->reg_class[cla].reg_class = 115;
3379         chan->reg_class[cla].channels = 0;
3380         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3381                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3382         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3383                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3384         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3385                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3386         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3387                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3388         if (chan->reg_class[cla].channels)
3389                 cla++;
3390
3391         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3392                    "band");
3393
3394         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3395         chan->reg_class[cla].reg_class = 124;
3396         chan->reg_class[cla].channels = 0;
3397         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3398                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3399         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3400                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3401         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3402                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3403         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3404                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3405         if (chan->reg_class[cla].channels)
3406                 cla++;
3407
3408         chan->reg_classes = cla;
3409         return 0;
3410 }
3411
3412
3413 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3414                                           u16 num_modes,
3415                                           enum hostapd_hw_mode mode)
3416 {
3417         u16 i;
3418
3419         for (i = 0; i < num_modes; i++) {
3420                 if (modes[i].mode == mode)
3421                         return &modes[i];
3422         }
3423
3424         return NULL;
3425 }
3426
3427
3428 enum chan_allowed {
3429         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3430 };
3431
3432 static int has_channel(struct wpa_global *global,
3433                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3434 {
3435         int i;
3436         unsigned int freq;
3437
3438         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3439                 chan * 5;
3440         if (wpas_p2p_disallowed_freq(global, freq))
3441                 return NOT_ALLOWED;
3442
3443         for (i = 0; i < mode->num_channels; i++) {
3444                 if (mode->channels[i].chan == chan) {
3445                         if (flags)
3446                                 *flags = mode->channels[i].flag;
3447                         if (mode->channels[i].flag &
3448                             (HOSTAPD_CHAN_DISABLED |
3449                              HOSTAPD_CHAN_RADAR))
3450                                 return NOT_ALLOWED;
3451                         if (mode->channels[i].flag &
3452                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3453                              HOSTAPD_CHAN_NO_IBSS))
3454                                 return PASSIVE_ONLY;
3455                         return ALLOWED;
3456                 }
3457         }
3458
3459         return NOT_ALLOWED;
3460 }
3461
3462
3463 struct p2p_oper_class_map {
3464         enum hostapd_hw_mode mode;
3465         u8 op_class;
3466         u8 min_chan;
3467         u8 max_chan;
3468         u8 inc;
3469         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3470 };
3471
3472 static struct p2p_oper_class_map op_class[] = {
3473         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3474 #if 0 /* Do not enable HT40 on 2 GHz for now */
3475         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3476         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3477 #endif
3478         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3479         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3480         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3481         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3482         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3483         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3484
3485         /*
3486          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3487          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3488          * 80 MHz, but currently use the following definition for simplicity
3489          * (these center frequencies are not actual channels, which makes
3490          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3491          * removing invalid channels.
3492          */
3493         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3494         { -1, 0, 0, 0, 0, BW20 }
3495 };
3496
3497
3498 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3499                                      struct hostapd_hw_modes *mode,
3500                                      u8 channel)
3501 {
3502         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3503         unsigned int i;
3504
3505         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3506                 return 0;
3507
3508         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3509                 /*
3510                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3511                  * so the center channel is 6 channels away from the start/end.
3512                  */
3513                 if (channel >= center_channels[i] - 6 &&
3514                     channel <= center_channels[i] + 6)
3515                         return center_channels[i];
3516
3517         return 0;
3518 }
3519
3520
3521 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3522                                                struct hostapd_hw_modes *mode,
3523                                                u8 channel, u8 bw)
3524 {
3525         u8 center_chan;
3526         int i, flags;
3527         enum chan_allowed res, ret = ALLOWED;
3528
3529         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3530         if (!center_chan)
3531                 return NOT_ALLOWED;
3532         if (center_chan >= 58 && center_chan <= 138)
3533                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3534
3535         /* check all the channels are available */
3536         for (i = 0; i < 4; i++) {
3537                 int adj_chan = center_chan - 6 + i * 4;
3538
3539                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3540                 if (res == NOT_ALLOWED)
3541                         return NOT_ALLOWED;
3542                 if (res == PASSIVE_ONLY)
3543                         ret = PASSIVE_ONLY;
3544
3545                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3546                         return NOT_ALLOWED;
3547                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3548                         return NOT_ALLOWED;
3549                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3550                         return NOT_ALLOWED;
3551                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3552                         return NOT_ALLOWED;
3553         }
3554
3555         return ret;
3556 }
3557
3558
3559 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3560                                                  struct hostapd_hw_modes *mode,
3561                                                  u8 channel, u8 bw)
3562 {
3563         int flag = 0;
3564         enum chan_allowed res, res2;
3565
3566         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3567         if (bw == BW40MINUS) {
3568                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3569                         return NOT_ALLOWED;
3570                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3571         } else if (bw == BW40PLUS) {
3572                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3573                         return NOT_ALLOWED;
3574                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3575         } else if (bw == BW80) {
3576                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3577         }
3578
3579         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3580                 return NOT_ALLOWED;
3581         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3582                 return PASSIVE_ONLY;
3583         return res;
3584 }
3585
3586
3587 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3588                                    struct p2p_channels *chan,
3589                                    struct p2p_channels *cli_chan)
3590 {
3591         struct hostapd_hw_modes *mode;
3592         int cla, op, cli_cla;
3593
3594         if (wpa_s->hw.modes == NULL) {
3595                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3596                            "of all supported channels; assume dualband "
3597                            "support");
3598                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3599         }
3600
3601         cla = cli_cla = 0;
3602
3603         for (op = 0; op_class[op].op_class; op++) {
3604                 struct p2p_oper_class_map *o = &op_class[op];
3605                 u8 ch;
3606                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3607
3608                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3609                 if (mode == NULL)
3610                         continue;
3611                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3612                         enum chan_allowed res;
3613                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3614                         if (res == ALLOWED) {
3615                                 if (reg == NULL) {
3616                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3617                                                    o->op_class);
3618                                         reg = &chan->reg_class[cla];
3619                                         cla++;
3620                                         reg->reg_class = o->op_class;
3621                                 }
3622                                 reg->channel[reg->channels] = ch;
3623                                 reg->channels++;
3624                         } else if (res == PASSIVE_ONLY &&
3625                                    wpa_s->conf->p2p_add_cli_chan) {
3626                                 if (cli_reg == NULL) {
3627                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3628                                                    o->op_class);
3629                                         cli_reg = &cli_chan->reg_class[cli_cla];
3630                                         cli_cla++;
3631                                         cli_reg->reg_class = o->op_class;
3632                                 }
3633                                 cli_reg->channel[cli_reg->channels] = ch;
3634                                 cli_reg->channels++;
3635                         }
3636                 }
3637                 if (reg) {
3638                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3639                                     reg->channel, reg->channels);
3640                 }
3641                 if (cli_reg) {
3642                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3643                                     cli_reg->channel, cli_reg->channels);
3644                 }
3645         }
3646
3647         chan->reg_classes = cla;
3648         cli_chan->reg_classes = cli_cla;
3649
3650         return 0;
3651 }
3652
3653
3654 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3655                            struct hostapd_hw_modes *mode, u8 channel)
3656 {
3657         int op;
3658         enum chan_allowed ret;
3659
3660         for (op = 0; op_class[op].op_class; op++) {
3661                 struct p2p_oper_class_map *o = &op_class[op];
3662                 u8 ch;
3663
3664                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3665                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3666                             o->bw == BW20 || ch != channel)
3667                                 continue;
3668                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3669                         if (ret == ALLOWED)
3670                                 return (o->bw == BW40MINUS) ? -1 : 1;
3671                 }
3672         }
3673         return 0;
3674 }
3675
3676
3677 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3678                               struct hostapd_hw_modes *mode, u8 channel)
3679 {
3680         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3681                 return 0;
3682
3683         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3684 }
3685
3686
3687 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3688                         size_t buf_len)
3689 {
3690         struct wpa_supplicant *wpa_s = ctx;
3691
3692         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3693                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3694                         break;
3695         }
3696         if (wpa_s == NULL)
3697                 return -1;
3698
3699         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3700 }
3701
3702
3703 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3704                                               const u8 *ssid, size_t ssid_len)
3705 {
3706         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3707                 struct wpa_ssid *s = wpa_s->current_ssid;
3708                 if (s == NULL)
3709                         continue;
3710                 if (s->mode != WPAS_MODE_P2P_GO &&
3711                     s->mode != WPAS_MODE_AP &&
3712                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3713                         continue;
3714                 if (s->ssid_len != ssid_len ||
3715                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3716                         continue;
3717                 return wpa_s;
3718         }
3719
3720         return NULL;
3721
3722 }
3723
3724
3725 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3726                                                   const u8 *peer_dev_addr)
3727 {
3728         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3729                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3730                 if (ssid == NULL)
3731                         continue;
3732                 if (ssid->mode != WPAS_MODE_INFRA)
3733                         continue;
3734                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3735                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3736                         continue;
3737                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3738                         return wpa_s;
3739         }
3740
3741         return NULL;
3742 }
3743
3744
3745 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3746 {
3747         struct wpa_supplicant *wpa_s = ctx;
3748
3749         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3750 }
3751
3752
3753 static int wpas_is_concurrent_session_active(void *ctx)
3754 {
3755         struct wpa_supplicant *wpa_s = ctx;
3756         struct wpa_supplicant *ifs;
3757
3758         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3759                 if (ifs == wpa_s)
3760                         continue;
3761                 if (ifs->wpa_state > WPA_ASSOCIATED)
3762                         return 1;
3763         }
3764         return 0;
3765 }
3766
3767
3768 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3769 {
3770         struct wpa_supplicant *wpa_s = ctx;
3771         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3772 }
3773
3774
3775 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3776 {
3777         struct wpa_interface iface;
3778         struct wpa_supplicant *p2pdev_wpa_s;
3779         char ifname[100];
3780         char force_name[100];
3781         int ret;
3782
3783         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3784                     wpa_s->ifname);
3785         force_name[0] = '\0';
3786         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3787         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3788                              force_name, wpa_s->pending_interface_addr, NULL);
3789         if (ret < 0) {
3790                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3791                 return ret;
3792         }
3793         os_strlcpy(wpa_s->pending_interface_name, ifname,
3794                    sizeof(wpa_s->pending_interface_name));
3795
3796         os_memset(&iface, 0, sizeof(iface));
3797         iface.p2p_mgmt = 1;
3798         iface.ifname = wpa_s->pending_interface_name;
3799         iface.driver = wpa_s->driver->name;
3800         iface.driver_param = wpa_s->conf->driver_param;
3801
3802         /*
3803          * If a P2P Device configuration file was given, use it as the interface
3804          * configuration file (instead of using parent's configuration file.
3805          */
3806         if (wpa_s->conf_p2p_dev) {
3807                 iface.confname = wpa_s->conf_p2p_dev;
3808                 iface.ctrl_interface = NULL;
3809         } else {
3810                 iface.confname = wpa_s->confname;
3811                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3812         }
3813         iface.conf_p2p_dev = NULL;
3814
3815         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3816         if (!p2pdev_wpa_s) {
3817                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3818                 return -1;
3819         }
3820         p2pdev_wpa_s->parent = wpa_s;
3821
3822         wpa_s->pending_interface_name[0] = '\0';
3823         return 0;
3824 }
3825
3826
3827 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3828                                const u8 *noa, size_t noa_len)
3829 {
3830         struct wpa_supplicant *wpa_s, *intf = ctx;
3831         char hex[100];
3832
3833         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3834                 if (wpa_s->waiting_presence_resp)
3835                         break;
3836         }
3837         if (!wpa_s) {
3838                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3839                 return;
3840         }
3841         wpa_s->waiting_presence_resp = 0;
3842
3843         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3844         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3845                 " status=%u noa=%s", MAC2STR(src), status, hex);
3846 }
3847
3848
3849 static int _wpas_p2p_in_progress(void *ctx)
3850 {
3851         struct wpa_supplicant *wpa_s = ctx;
3852         return wpas_p2p_in_progress(wpa_s);
3853 }
3854
3855
3856 /**
3857  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3858  * @global: Pointer to global data from wpa_supplicant_init()
3859  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3860  * Returns: 0 on success, -1 on failure
3861  */
3862 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3863 {
3864         struct p2p_config p2p;
3865         unsigned int r;
3866         int i;
3867
3868         if (wpa_s->conf->p2p_disabled)
3869                 return 0;
3870
3871         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3872                 return 0;
3873
3874         if (global->p2p)
3875                 return 0;
3876
3877         os_memset(&p2p, 0, sizeof(p2p));
3878         p2p.cb_ctx = wpa_s;
3879         p2p.debug_print = wpas_p2p_debug_print;
3880         p2p.p2p_scan = wpas_p2p_scan;
3881         p2p.send_action = wpas_send_action;
3882         p2p.send_action_done = wpas_send_action_done;
3883         p2p.go_neg_completed = wpas_go_neg_completed;
3884         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3885         p2p.dev_found = wpas_dev_found;
3886         p2p.dev_lost = wpas_dev_lost;
3887         p2p.find_stopped = wpas_find_stopped;
3888         p2p.start_listen = wpas_start_listen;
3889         p2p.stop_listen = wpas_stop_listen;
3890         p2p.send_probe_resp = wpas_send_probe_resp;
3891         p2p.sd_request = wpas_sd_request;
3892         p2p.sd_response = wpas_sd_response;
3893         p2p.prov_disc_req = wpas_prov_disc_req;
3894         p2p.prov_disc_resp = wpas_prov_disc_resp;
3895         p2p.prov_disc_fail = wpas_prov_disc_fail;
3896         p2p.invitation_process = wpas_invitation_process;
3897         p2p.invitation_received = wpas_invitation_received;
3898         p2p.invitation_result = wpas_invitation_result;
3899         p2p.get_noa = wpas_get_noa;
3900         p2p.go_connected = wpas_go_connected;
3901         p2p.presence_resp = wpas_presence_resp;
3902         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3903         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3904
3905         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3906         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3907         p2p.dev_name = wpa_s->conf->device_name;
3908         p2p.manufacturer = wpa_s->conf->manufacturer;
3909         p2p.model_name = wpa_s->conf->model_name;
3910         p2p.model_number = wpa_s->conf->model_number;
3911         p2p.serial_number = wpa_s->conf->serial_number;
3912         if (wpa_s->wps) {
3913                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3914                 p2p.config_methods = wpa_s->wps->config_methods;
3915         }
3916
3917         if (wpa_s->conf->p2p_listen_reg_class &&
3918             wpa_s->conf->p2p_listen_channel) {
3919                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3920                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3921                 p2p.channel_forced = 1;
3922         } else {
3923                 p2p.reg_class = 81;
3924                 /*
3925                  * Pick one of the social channels randomly as the listen
3926                  * channel.
3927                  */
3928                 os_get_random((u8 *) &r, sizeof(r));
3929                 p2p.channel = 1 + (r % 3) * 5;
3930                 p2p.channel_forced = 0;
3931         }
3932         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3933
3934         if (wpa_s->conf->p2p_oper_reg_class &&
3935             wpa_s->conf->p2p_oper_channel) {
3936                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3937                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3938                 p2p.cfg_op_channel = 1;
3939                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3940                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3941
3942         } else {
3943                 p2p.op_reg_class = 81;
3944                 /*
3945                  * Use random operation channel from (1, 6, 11) if no other
3946                  * preference is indicated.
3947                  */
3948                 os_get_random((u8 *) &r, sizeof(r));
3949                 p2p.op_channel = 1 + (r % 3) * 5;
3950                 p2p.cfg_op_channel = 0;
3951                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3952                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3953         }
3954
3955         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3956                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3957                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3958         }
3959
3960         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3961                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3962                 p2p.country[2] = 0x04;
3963         } else
3964                 os_memcpy(p2p.country, "XX\x04", 3);
3965
3966         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3967                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3968                            "channel list");
3969                 return -1;
3970         }
3971
3972         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3973                   WPS_DEV_TYPE_LEN);
3974
3975         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3976         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3977                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3978
3979         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3980                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3981
3982         p2p.max_peers = 100;
3983
3984         if (wpa_s->conf->p2p_ssid_postfix) {
3985                 p2p.ssid_postfix_len =
3986                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3987                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3988                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3989                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3990                           p2p.ssid_postfix_len);
3991         }
3992
3993         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3994
3995         p2p.max_listen = wpa_s->max_remain_on_chan;
3996
3997         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
3998             wpa_s->conf->p2p_passphrase_len <= 63)
3999                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4000         else
4001                 p2p.passphrase_len = 8;
4002
4003         global->p2p = p2p_init(&p2p);
4004         if (global->p2p == NULL)
4005                 return -1;
4006         global->p2p_init_wpa_s = wpa_s;
4007
4008         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4009                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4010                         continue;
4011                 p2p_add_wps_vendor_extension(
4012                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4013         }
4014
4015         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4016
4017         return 0;
4018 }
4019
4020
4021 /**
4022  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4023  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4024  *
4025  * This function deinitialize per-interface P2P data.
4026  */
4027 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4028 {
4029         if (wpa_s->driver && wpa_s->drv_priv)
4030                 wpa_drv_probe_req_report(wpa_s, 0);
4031
4032         if (wpa_s->go_params) {
4033                 /* Clear any stored provisioning info */
4034                 p2p_clear_provisioning_info(
4035                         wpa_s->global->p2p,
4036                         wpa_s->go_params->peer_device_addr);
4037         }
4038
4039         os_free(wpa_s->go_params);
4040         wpa_s->go_params = NULL;
4041         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4042         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4043         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4044         wpa_s->p2p_long_listen = 0;
4045         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4046         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4047         wpas_p2p_remove_pending_group_interface(wpa_s);
4048         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4049         wpas_p2p_listen_work_done(wpa_s);
4050         if (wpa_s->p2p_send_action_work) {
4051                 os_free(wpa_s->p2p_send_action_work->ctx);
4052                 radio_work_done(wpa_s->p2p_send_action_work);
4053                 wpa_s->p2p_send_action_work = NULL;
4054         }
4055         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4056
4057         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4058         wpa_s->p2p_oob_dev_pw = NULL;
4059
4060         /* TODO: remove group interface from the driver if this wpa_s instance
4061          * is on top of a P2P group interface */
4062 }
4063
4064
4065 /**
4066  * wpas_p2p_deinit_global - Deinitialize global P2P module
4067  * @global: Pointer to global data from wpa_supplicant_init()
4068  *
4069  * This function deinitializes the global (per device) P2P module.
4070  */
4071 static void wpas_p2p_deinit_global(struct wpa_global *global)
4072 {
4073         struct wpa_supplicant *wpa_s, *tmp;
4074
4075         wpa_s = global->ifaces;
4076         if (wpa_s)
4077                 wpas_p2p_service_flush(wpa_s);
4078
4079         if (global->p2p == NULL)
4080                 return;
4081
4082         /* Remove remaining P2P group interfaces */
4083         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4084                 wpa_s = wpa_s->next;
4085         while (wpa_s) {
4086                 tmp = global->ifaces;
4087                 while (tmp &&
4088                        (tmp == wpa_s ||
4089                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4090                         tmp = tmp->next;
4091                 }
4092                 if (tmp == NULL)
4093                         break;
4094                 /* Disconnect from the P2P group and deinit the interface */
4095                 wpas_p2p_disconnect(tmp);
4096         }
4097
4098         /*
4099          * Deinit GO data on any possibly remaining interface (if main
4100          * interface is used as GO).
4101          */
4102         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4103                 if (wpa_s->ap_iface)
4104                         wpas_p2p_group_deinit(wpa_s);
4105         }
4106
4107         p2p_deinit(global->p2p);
4108         global->p2p = NULL;
4109         global->p2p_init_wpa_s = NULL;
4110 }
4111
4112
4113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4114 {
4115         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4116             wpa_s->conf->p2p_no_group_iface)
4117                 return 0; /* separate interface disabled per configuration */
4118         if (wpa_s->drv_flags &
4119             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4120              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4121                 return 1; /* P2P group requires a new interface in every case
4122                            */
4123         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4124                 return 0; /* driver does not support concurrent operations */
4125         if (wpa_s->global->ifaces->next)
4126                 return 1; /* more that one interface already in use */
4127         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4128                 return 1; /* this interface is already in use */
4129         return 0;
4130 }
4131
4132
4133 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4134                                  const u8 *peer_addr,
4135                                  enum p2p_wps_method wps_method,
4136                                  int go_intent, const u8 *own_interface_addr,
4137                                  unsigned int force_freq, int persistent_group,
4138                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4139 {
4140         if (persistent_group && wpa_s->conf->persistent_reconnect)
4141                 persistent_group = 2;
4142
4143         /*
4144          * Increase GO config timeout if HT40 is used since it takes some time
4145          * to scan channels for coex purposes before the BSS can be started.
4146          */
4147         p2p_set_config_timeout(wpa_s->global->p2p,
4148                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4149
4150         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4151                            go_intent, own_interface_addr, force_freq,
4152                            persistent_group, ssid ? ssid->ssid : NULL,
4153                            ssid ? ssid->ssid_len : 0,
4154                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4155                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4156                            0);
4157 }
4158
4159
4160 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4161                                 const u8 *peer_addr,
4162                                 enum p2p_wps_method wps_method,
4163                                 int go_intent, const u8 *own_interface_addr,
4164                                 unsigned int force_freq, int persistent_group,
4165                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4166 {
4167         if (persistent_group && wpa_s->conf->persistent_reconnect)
4168                 persistent_group = 2;
4169
4170         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4171                              go_intent, own_interface_addr, force_freq,
4172                              persistent_group, ssid ? ssid->ssid : NULL,
4173                              ssid ? ssid->ssid_len : 0, pref_freq,
4174                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4175                              0);
4176 }
4177
4178
4179 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4180 {
4181         wpa_s->p2p_join_scan_count++;
4182         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4183                    wpa_s->p2p_join_scan_count);
4184         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4185                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4186                            " for join operationg - stop join attempt",
4187                            MAC2STR(wpa_s->pending_join_iface_addr));
4188                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4189                 if (wpa_s->p2p_auto_pd) {
4190                         wpa_s->p2p_auto_pd = 0;
4191                         wpa_msg_global(wpa_s, MSG_INFO,
4192                                        P2P_EVENT_PROV_DISC_FAILURE
4193                                        " p2p_dev_addr=" MACSTR " status=N/A",
4194                                        MAC2STR(wpa_s->pending_join_dev_addr));
4195                         return;
4196                 }
4197                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4198                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4199         }
4200 }
4201
4202
4203 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4204 {
4205         int res;
4206         unsigned int num, i;
4207         struct wpa_used_freq_data *freqs;
4208
4209         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4210                 /* Multiple channels are supported and not all are in use */
4211                 return 0;
4212         }
4213
4214         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4215                           sizeof(struct wpa_used_freq_data));
4216         if (!freqs)
4217                 return 1;
4218
4219         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4220                                         wpa_s->num_multichan_concurrent);
4221
4222         for (i = 0; i < num; i++) {
4223                 if (freqs[i].freq == freq) {
4224                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4225                                    freq);
4226                         res = 0;
4227                         goto exit_free;
4228                 }
4229         }
4230
4231         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4232         res = 1;
4233
4234 exit_free:
4235         os_free(freqs);
4236         return res;
4237 }
4238
4239
4240 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4241                             const u8 *peer_dev_addr)
4242 {
4243         struct wpa_bss *bss;
4244         int updated;
4245
4246         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4247         if (bss == NULL)
4248                 return -1;
4249         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4250                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4251                            "last scan");
4252                 return 0;
4253         }
4254
4255         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4256                                     &bss->last_update);
4257         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4258                    "%ld.%06ld (%supdated in last scan)",
4259                    bss->last_update.sec, bss->last_update.usec,
4260                    updated ? "": "not ");
4261
4262         return updated;
4263 }
4264
4265
4266 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4267                                    struct wpa_scan_results *scan_res)
4268 {
4269         struct wpa_bss *bss = NULL;
4270         int freq;
4271         u8 iface_addr[ETH_ALEN];
4272
4273         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4274
4275         if (wpa_s->global->p2p_disabled)
4276                 return;
4277
4278         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4279                    scan_res ? (int) scan_res->num : -1,
4280                    wpa_s->p2p_auto_join ? "auto_" : "");
4281
4282         if (scan_res)
4283                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4284
4285         if (wpa_s->p2p_auto_pd) {
4286                 int join = wpas_p2p_peer_go(wpa_s,
4287                                             wpa_s->pending_join_dev_addr);
4288                 if (join == 0 &&
4289                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4290                         wpa_s->auto_pd_scan_retry++;
4291                         bss = wpa_bss_get_bssid_latest(
4292                                 wpa_s, wpa_s->pending_join_dev_addr);
4293                         if (bss) {
4294                                 freq = bss->freq;
4295                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4296                                            "the peer " MACSTR " at %d MHz",
4297                                            wpa_s->auto_pd_scan_retry,
4298                                            MAC2STR(wpa_s->
4299                                                    pending_join_dev_addr),
4300                                            freq);
4301                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4302                                 return;
4303                         }
4304                 }
4305
4306                 if (join < 0)
4307                         join = 0;
4308
4309                 wpa_s->p2p_auto_pd = 0;
4310                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4311                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4312                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4313                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4314                                       wpa_s->pending_join_dev_addr,
4315                                       wpa_s->pending_pd_config_methods, join,
4316                                       0, wpa_s->user_initiated_pd) < 0) {
4317                         wpa_s->p2p_auto_pd = 0;
4318                         wpa_msg_global(wpa_s, MSG_INFO,
4319                                        P2P_EVENT_PROV_DISC_FAILURE
4320                                        " p2p_dev_addr=" MACSTR " status=N/A",
4321                                        MAC2STR(wpa_s->pending_join_dev_addr));
4322                 }
4323                 return;
4324         }
4325
4326         if (wpa_s->p2p_auto_join) {
4327                 int join = wpas_p2p_peer_go(wpa_s,
4328                                             wpa_s->pending_join_dev_addr);
4329                 if (join < 0) {
4330                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4331                                    "running a GO -> use GO Negotiation");
4332                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4333                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4334                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4335                                          wpa_s->p2p_go_intent,
4336                                          wpa_s->p2p_connect_freq,
4337                                          wpa_s->p2p_persistent_id,
4338                                          wpa_s->p2p_pd_before_go_neg,
4339                                          wpa_s->p2p_go_ht40,
4340                                          wpa_s->p2p_go_vht);
4341                         return;
4342                 }
4343
4344                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4345                            "try to join the group", join ? "" :
4346                            " in older scan");
4347                 if (!join)
4348                         wpa_s->p2p_fallback_to_go_neg = 1;
4349         }
4350
4351         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4352                                  wpa_s->pending_join_iface_addr);
4353         if (freq < 0 &&
4354             p2p_get_interface_addr(wpa_s->global->p2p,
4355                                    wpa_s->pending_join_dev_addr,
4356                                    iface_addr) == 0 &&
4357             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4358             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4359                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4360                            "address for join from " MACSTR " to " MACSTR
4361                            " based on newly discovered P2P peer entry",
4362                            MAC2STR(wpa_s->pending_join_iface_addr),
4363                            MAC2STR(iface_addr));
4364                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4365                           ETH_ALEN);
4366
4367                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4368                                          wpa_s->pending_join_iface_addr);
4369         }
4370         if (freq >= 0) {
4371                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4372                            "from P2P peer table: %d MHz", freq);
4373         }
4374         if (wpa_s->p2p_join_ssid_len) {
4375                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4376                            MACSTR " and SSID %s",
4377                            MAC2STR(wpa_s->pending_join_iface_addr),
4378                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4379                                         wpa_s->p2p_join_ssid_len));
4380                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4381                                   wpa_s->p2p_join_ssid,
4382                                   wpa_s->p2p_join_ssid_len);
4383         }
4384         if (!bss) {
4385                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4386                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4387                 bss = wpa_bss_get_bssid_latest(wpa_s,
4388                                                wpa_s->pending_join_iface_addr);
4389         }
4390         if (bss) {
4391                 freq = bss->freq;
4392                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4393                            "from BSS table: %d MHz (SSID %s)", freq,
4394                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4395         }
4396         if (freq > 0) {
4397                 u16 method;
4398
4399                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4400                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4401                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4402                                        "reason=FREQ_CONFLICT");
4403                         return;
4404                 }
4405
4406                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4407                            "prior to joining an existing group (GO " MACSTR
4408                            " freq=%u MHz)",
4409                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4410                 wpa_s->pending_pd_before_join = 1;
4411
4412                 switch (wpa_s->pending_join_wps_method) {
4413                 case WPS_PIN_DISPLAY:
4414                         method = WPS_CONFIG_KEYPAD;
4415                         break;
4416                 case WPS_PIN_KEYPAD:
4417                         method = WPS_CONFIG_DISPLAY;
4418                         break;
4419                 case WPS_PBC:
4420                         method = WPS_CONFIG_PUSHBUTTON;
4421                         break;
4422                 default:
4423                         method = 0;
4424                         break;
4425                 }
4426
4427                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4428                                                wpa_s->pending_join_dev_addr) ==
4429                      method)) {
4430                         /*
4431                          * We have already performed provision discovery for
4432                          * joining the group. Proceed directly to join
4433                          * operation without duplicated provision discovery. */
4434                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4435                                    "with " MACSTR " already done - proceed to "
4436                                    "join",
4437                                    MAC2STR(wpa_s->pending_join_dev_addr));
4438                         wpa_s->pending_pd_before_join = 0;
4439                         goto start;
4440                 }
4441
4442                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4443                                       wpa_s->pending_join_dev_addr, method, 1,
4444                                       freq, wpa_s->user_initiated_pd) < 0) {
4445                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4446                                    "Discovery Request before joining an "
4447                                    "existing group");
4448                         wpa_s->pending_pd_before_join = 0;
4449                         goto start;
4450                 }
4451                 return;
4452         }
4453
4454         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4455         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4456         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4457         wpas_p2p_check_join_scan_limit(wpa_s);
4458         return;
4459
4460 start:
4461         /* Start join operation immediately */
4462         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4463 }
4464
4465
4466 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4467                                    const u8 *ssid, size_t ssid_len)
4468 {
4469         int ret;
4470         struct wpa_driver_scan_params params;
4471         struct wpabuf *wps_ie, *ies;
4472         size_t ielen;
4473         int freqs[2] = { 0, 0 };
4474
4475         os_memset(&params, 0, sizeof(params));
4476
4477         /* P2P Wildcard SSID */
4478         params.num_ssids = 1;
4479         if (ssid && ssid_len) {
4480                 params.ssids[0].ssid = ssid;
4481                 params.ssids[0].ssid_len = ssid_len;
4482                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4483                 wpa_s->p2p_join_ssid_len = ssid_len;
4484         } else {
4485                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4486                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4487                 wpa_s->p2p_join_ssid_len = 0;
4488         }
4489
4490         wpa_s->wps->dev.p2p = 1;
4491         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4492                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4493                                         NULL);
4494         if (wps_ie == NULL) {
4495                 wpas_p2p_scan_res_join(wpa_s, NULL);
4496                 return;
4497         }
4498
4499         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4500         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4501         if (ies == NULL) {
4502                 wpabuf_free(wps_ie);
4503                 wpas_p2p_scan_res_join(wpa_s, NULL);
4504                 return;
4505         }
4506         wpabuf_put_buf(ies, wps_ie);
4507         wpabuf_free(wps_ie);
4508
4509         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4510
4511         params.p2p_probe = 1;
4512         params.extra_ies = wpabuf_head(ies);
4513         params.extra_ies_len = wpabuf_len(ies);
4514
4515         if (!freq) {
4516                 int oper_freq;
4517                 /*
4518                  * If freq is not provided, check the operating freq of the GO
4519                  * and use a single channel scan on if possible.
4520                  */
4521                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4522                                               wpa_s->pending_join_iface_addr);
4523                 if (oper_freq > 0)
4524                         freq = oper_freq;
4525         }
4526         if (freq > 0) {
4527                 freqs[0] = freq;
4528                 params.freqs = freqs;
4529         }
4530
4531         /*
4532          * Run a scan to update BSS table and start Provision Discovery once
4533          * the new scan results become available.
4534          */
4535         ret = wpa_drv_scan(wpa_s, &params);
4536         if (!ret) {
4537                 os_get_reltime(&wpa_s->scan_trigger_time);
4538                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4539                 wpa_s->own_scan_requested = 1;
4540         }
4541
4542         wpabuf_free(ies);
4543
4544         if (ret) {
4545                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4546                            "try again later");
4547                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4548                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4549                 wpas_p2p_check_join_scan_limit(wpa_s);
4550         }
4551 }
4552
4553
4554 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4555 {
4556         struct wpa_supplicant *wpa_s = eloop_ctx;
4557         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4558 }
4559
4560
4561 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4562                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4563                          int auto_join, int op_freq,
4564                          const u8 *ssid, size_t ssid_len)
4565 {
4566         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4567                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4568                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4569                    auto_join ? " (auto_join)" : "");
4570         if (ssid && ssid_len) {
4571                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4572                            wpa_ssid_txt(ssid, ssid_len));
4573         }
4574
4575         wpa_s->p2p_auto_pd = 0;
4576         wpa_s->p2p_auto_join = !!auto_join;
4577         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4578         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4579         wpa_s->pending_join_wps_method = wps_method;
4580
4581         /* Make sure we are not running find during connection establishment */
4582         wpas_p2p_stop_find(wpa_s);
4583
4584         wpa_s->p2p_join_scan_count = 0;
4585         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4586         return 0;
4587 }
4588
4589
4590 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4591                                const u8 *ssid, size_t ssid_len)
4592 {
4593         struct wpa_supplicant *group;
4594         struct p2p_go_neg_results res;
4595         struct wpa_bss *bss;
4596
4597         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4598         if (group == NULL)
4599                 return -1;
4600         if (group != wpa_s) {
4601                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4602                           sizeof(group->p2p_pin));
4603                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4604         } else {
4605                 /*
4606                  * Need to mark the current interface for p2p_group_formation
4607                  * when a separate group interface is not used. This is needed
4608                  * to allow p2p_cancel stop a pending p2p_connect-join.
4609                  * wpas_p2p_init_group_interface() addresses this for the case
4610                  * where a separate group interface is used.
4611                  */
4612                 wpa_s->global->p2p_group_formation = wpa_s;
4613         }
4614
4615         group->p2p_in_provisioning = 1;
4616         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4617
4618         os_memset(&res, 0, sizeof(res));
4619         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4620         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4621                   ETH_ALEN);
4622         res.wps_method = wpa_s->pending_join_wps_method;
4623         if (freq && ssid && ssid_len) {
4624                 res.freq = freq;
4625                 res.ssid_len = ssid_len;
4626                 os_memcpy(res.ssid, ssid, ssid_len);
4627         } else {
4628                 bss = wpa_bss_get_bssid_latest(wpa_s,
4629                                                wpa_s->pending_join_iface_addr);
4630                 if (bss) {
4631                         res.freq = bss->freq;
4632                         res.ssid_len = bss->ssid_len;
4633                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4634                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4635                                    bss->freq,
4636                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4637                 }
4638         }
4639
4640         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4641                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4642                            "starting client");
4643                 wpa_drv_cancel_remain_on_channel(wpa_s);
4644                 wpa_s->off_channel_freq = 0;
4645                 wpa_s->roc_waiting_drv_freq = 0;
4646         }
4647         wpas_start_wps_enrollee(group, &res);
4648
4649         /*
4650          * Allow a longer timeout for join-a-running-group than normal 15
4651          * second group formation timeout since the GO may not have authorized
4652          * our connection yet.
4653          */
4654         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4655         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4656                                wpa_s, NULL);
4657
4658         return 0;
4659 }
4660
4661
4662 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4663                                 int *force_freq, int *pref_freq, int go)
4664 {
4665         struct wpa_used_freq_data *freqs;
4666         int res, best_freq, num_unused;
4667         unsigned int freq_in_use = 0, num, i;
4668
4669         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4670                           sizeof(struct wpa_used_freq_data));
4671         if (!freqs)
4672                 return -1;
4673
4674         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4675                                         wpa_s->num_multichan_concurrent);
4676
4677         /*
4678          * It is possible that the total number of used frequencies is bigger
4679          * than the number of frequencies used for P2P, so get the system wide
4680          * number of unused frequencies.
4681          */
4682         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4683
4684         wpa_printf(MSG_DEBUG,
4685                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4686                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4687
4688         if (freq > 0) {
4689                 int ret;
4690                 if (go)
4691                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4692                 else
4693                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4694                 if (!ret) {
4695                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4696                                    "(%u MHz) is not supported for P2P uses",
4697                                    freq);
4698                         res = -3;
4699                         goto exit_free;
4700                 }
4701
4702                 for (i = 0; i < num; i++) {
4703                         if (freqs[i].freq == freq)
4704                                 freq_in_use = 1;
4705                 }
4706
4707                 if (num_unused <= 0 && !freq_in_use) {
4708                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4709                                    freq);
4710                         res = -2;
4711                         goto exit_free;
4712                 }
4713                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4714                            "requested channel (%u MHz)", freq);
4715                 *force_freq = freq;
4716                 goto exit_ok;
4717         }
4718
4719         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4720
4721         /* We have a candidate frequency to use */
4722         if (best_freq > 0) {
4723                 if (*pref_freq == 0 && num_unused > 0) {
4724                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4725                                    best_freq);
4726                         *pref_freq = best_freq;
4727                 } else {
4728                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4729                                    best_freq);
4730                         *force_freq = best_freq;
4731                 }
4732         } else if (num_unused > 0) {
4733                 wpa_printf(MSG_DEBUG,
4734                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
4735                 *force_freq = 0;
4736         } else {
4737                 wpa_printf(MSG_DEBUG,
4738                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4739                 res = -2;
4740                 goto exit_free;
4741         }
4742
4743 exit_ok:
4744         res = 0;
4745 exit_free:
4746         os_free(freqs);
4747         return res;
4748 }
4749
4750
4751 /**
4752  * wpas_p2p_connect - Request P2P Group Formation to be started
4753  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4754  * @peer_addr: Address of the peer P2P Device
4755  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4756  * @persistent_group: Whether to create a persistent group
4757  * @auto_join: Whether to select join vs. GO Negotiation automatically
4758  * @join: Whether to join an existing group (as a client) instead of starting
4759  *      Group Owner negotiation; @peer_addr is BSSID in that case
4760  * @auth: Whether to only authorize the connection instead of doing that and
4761  *      initiating Group Owner negotiation
4762  * @go_intent: GO Intent or -1 to use default
4763  * @freq: Frequency for the group or 0 for auto-selection
4764  * @persistent_id: Persistent group credentials to use for forcing GO
4765  *      parameters or -1 to generate new values (SSID/passphrase)
4766  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4767  *      interoperability workaround when initiating group formation
4768  * @ht40: Start GO with 40 MHz channel width
4769  * @vht:  Start GO with VHT support
4770  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4771  *      failure, -2 on failure due to channel not currently available,
4772  *      -3 if forced channel is not supported
4773  */
4774 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4775                      const char *pin, enum p2p_wps_method wps_method,
4776                      int persistent_group, int auto_join, int join, int auth,
4777                      int go_intent, int freq, int persistent_id, int pd,
4778                      int ht40, int vht)
4779 {
4780         int force_freq = 0, pref_freq = 0;
4781         int ret = 0, res;
4782         enum wpa_driver_if_type iftype;
4783         const u8 *if_addr;
4784         struct wpa_ssid *ssid = NULL;
4785
4786         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4787                 return -1;
4788
4789         if (persistent_id >= 0) {
4790                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4791                 if (ssid == NULL || ssid->disabled != 2 ||
4792                     ssid->mode != WPAS_MODE_P2P_GO)
4793                         return -1;
4794         }
4795
4796         os_free(wpa_s->global->add_psk);
4797         wpa_s->global->add_psk = NULL;
4798
4799         wpa_s->global->p2p_fail_on_wps_complete = 0;
4800
4801         if (go_intent < 0)
4802                 go_intent = wpa_s->conf->p2p_go_intent;
4803
4804         if (!auth)
4805                 wpa_s->p2p_long_listen = 0;
4806
4807         wpa_s->p2p_wps_method = wps_method;
4808         wpa_s->p2p_persistent_group = !!persistent_group;
4809         wpa_s->p2p_persistent_id = persistent_id;
4810         wpa_s->p2p_go_intent = go_intent;
4811         wpa_s->p2p_connect_freq = freq;
4812         wpa_s->p2p_fallback_to_go_neg = 0;
4813         wpa_s->p2p_pd_before_go_neg = !!pd;
4814         wpa_s->p2p_go_ht40 = !!ht40;
4815         wpa_s->p2p_go_vht = !!vht;
4816
4817         if (pin)
4818                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4819         else if (wps_method == WPS_PIN_DISPLAY) {
4820                 ret = wps_generate_pin();
4821                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4822                             ret);
4823                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4824                            wpa_s->p2p_pin);
4825         } else
4826                 wpa_s->p2p_pin[0] = '\0';
4827
4828         if (join || auto_join) {
4829                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4830                 if (auth) {
4831                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4832                                    "connect a running group from " MACSTR,
4833                                    MAC2STR(peer_addr));
4834                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4835                         return ret;
4836                 }
4837                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4838                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4839                                            iface_addr) < 0) {
4840                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4841                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4842                                          dev_addr);
4843                 }
4844                 if (auto_join) {
4845                         os_get_reltime(&wpa_s->p2p_auto_started);
4846                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4847                                    "%ld.%06ld",
4848                                    wpa_s->p2p_auto_started.sec,
4849                                    wpa_s->p2p_auto_started.usec);
4850                 }
4851                 wpa_s->user_initiated_pd = 1;
4852                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4853                                   auto_join, freq, NULL, 0) < 0)
4854                         return -1;
4855                 return ret;
4856         }
4857
4858         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4859                                    go_intent == 15);
4860         if (res)
4861                 return res;
4862         wpas_p2p_set_own_freq_preference(wpa_s,
4863                                          force_freq ? force_freq : pref_freq);
4864
4865         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4866
4867         if (wpa_s->create_p2p_iface) {
4868                 /* Prepare to add a new interface for the group */
4869                 iftype = WPA_IF_P2P_GROUP;
4870                 if (go_intent == 15)
4871                         iftype = WPA_IF_P2P_GO;
4872                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4873                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4874                                    "interface for the group");
4875                         return -1;
4876                 }
4877
4878                 if_addr = wpa_s->pending_interface_addr;
4879         } else
4880                 if_addr = wpa_s->own_addr;
4881
4882         if (auth) {
4883                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4884                                          go_intent, if_addr,
4885                                          force_freq, persistent_group, ssid,
4886                                          pref_freq) < 0)
4887                         return -1;
4888                 return ret;
4889         }
4890
4891         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4892                                   go_intent, if_addr, force_freq,
4893                                   persistent_group, ssid, pref_freq) < 0) {
4894                 if (wpa_s->create_p2p_iface)
4895                         wpas_p2p_remove_pending_group_interface(wpa_s);
4896                 return -1;
4897         }
4898         return ret;
4899 }
4900
4901
4902 /**
4903  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4904  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4905  * @freq: Frequency of the channel in MHz
4906  * @duration: Duration of the stay on the channel in milliseconds
4907  *
4908  * This callback is called when the driver indicates that it has started the
4909  * requested remain-on-channel duration.
4910  */
4911 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4912                                    unsigned int freq, unsigned int duration)
4913 {
4914         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4915                 return;
4916         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4917                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4918                               wpa_s->pending_listen_duration);
4919                 wpa_s->pending_listen_freq = 0;
4920         } else {
4921                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4922                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4923                            freq, duration);
4924         }
4925 }
4926
4927
4928 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4929                                  unsigned int timeout)
4930 {
4931         /* Limit maximum Listen state time based on driver limitation. */
4932         if (timeout > wpa_s->max_remain_on_chan)
4933                 timeout = wpa_s->max_remain_on_chan;
4934
4935         return p2p_listen(wpa_s->global->p2p, timeout);
4936 }
4937
4938
4939 /**
4940  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4941  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4942  * @freq: Frequency of the channel in MHz
4943  *
4944  * This callback is called when the driver indicates that a remain-on-channel
4945  * operation has been completed, i.e., the duration on the requested channel
4946  * has timed out.
4947  */
4948 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4949                                           unsigned int freq)
4950 {
4951         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4952                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4953                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4954         wpas_p2p_listen_work_done(wpa_s);
4955         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4956                 return;
4957         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4958                 return; /* P2P module started a new operation */
4959         if (offchannel_pending_action_tx(wpa_s))
4960                 return;
4961         if (wpa_s->p2p_long_listen > 0)
4962                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4963         if (wpa_s->p2p_long_listen > 0) {
4964                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4965                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4966         } else {
4967                 /*
4968                  * When listen duration is over, stop listen & update p2p_state
4969                  * to IDLE.
4970                  */
4971                 p2p_stop_listen(wpa_s->global->p2p);
4972         }
4973 }
4974
4975
4976 /**
4977  * wpas_p2p_group_remove - Remove a P2P group
4978  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4979  * @ifname: Network interface name of the group interface or "*" to remove all
4980  *      groups
4981  * Returns: 0 on success, -1 on failure
4982  *
4983  * This function is used to remove a P2P group. This can be used to disconnect
4984  * from a group in which the local end is a P2P Client or to end a P2P Group in
4985  * case the local end is the Group Owner. If a virtual network interface was
4986  * created for this group, that interface will be removed. Otherwise, only the
4987  * configured P2P group network will be removed from the interface.
4988  */
4989 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4990 {
4991         struct wpa_global *global = wpa_s->global;
4992
4993         if (os_strcmp(ifname, "*") == 0) {
4994                 struct wpa_supplicant *prev;
4995                 wpa_s = global->ifaces;
4996                 while (wpa_s) {
4997                         prev = wpa_s;
4998                         wpa_s = wpa_s->next;
4999                         if (prev->p2p_group_interface !=
5000                             NOT_P2P_GROUP_INTERFACE ||
5001                             (prev->current_ssid &&
5002                              prev->current_ssid->p2p_group))
5003                                 wpas_p2p_disconnect(prev);
5004                 }
5005                 return 0;
5006         }
5007
5008         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5009                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5010                         break;
5011         }
5012
5013         return wpas_p2p_disconnect(wpa_s);
5014 }
5015
5016
5017 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5018 {
5019         unsigned int r;
5020
5021         if (freq == 2) {
5022                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5023                            "band");
5024                 if (wpa_s->best_24_freq > 0 &&
5025                     p2p_supported_freq_go(wpa_s->global->p2p,
5026                                           wpa_s->best_24_freq)) {
5027                         freq = wpa_s->best_24_freq;
5028                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5029                                    "channel: %d MHz", freq);
5030                 } else {
5031                         os_get_random((u8 *) &r, sizeof(r));
5032                         freq = 2412 + (r % 3) * 25;
5033                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5034                                    "channel: %d MHz", freq);
5035                 }
5036         }
5037
5038         if (freq == 5) {
5039                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5040                            "band");
5041                 if (wpa_s->best_5_freq > 0 &&
5042                     p2p_supported_freq_go(wpa_s->global->p2p,
5043                                        wpa_s->best_5_freq)) {
5044                         freq = wpa_s->best_5_freq;
5045                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5046                                    "channel: %d MHz", freq);
5047                 } else {
5048                         os_get_random((u8 *) &r, sizeof(r));
5049                         freq = 5180 + (r % 4) * 20;
5050                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5051                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5052                                            "5 GHz channel for P2P group");
5053                                 return -1;
5054                         }
5055                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5056                                    "channel: %d MHz", freq);
5057                 }
5058         }
5059
5060         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5061                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5062                            "(%u MHz) is not supported for P2P uses",
5063                            freq);
5064                 return -1;
5065         }
5066
5067         return freq;
5068 }
5069
5070
5071 static int wpas_p2p_select_freq_no_pref(struct wpa_supplicant *wpa_s,
5072                                         struct p2p_go_neg_results *params,
5073                                         const struct p2p_channels *channels)
5074 {
5075         unsigned int i, r;
5076
5077         /* first try some random selection of the social channels */
5078         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5079                 return -1;
5080
5081         for (i = 0; i < 3; i++) {
5082                 params->freq = 2412 + ((r + i) % 3) * 25;
5083                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5084                     freq_included(channels, params->freq))
5085                         goto out;
5086         }
5087
5088         /* try all channels in reg. class 81 */
5089         for (i = 0; i < 11; i++) {
5090                 params->freq = 2412 + i * 5;
5091                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5092                     freq_included(channels, params->freq))
5093                         goto out;
5094         }
5095
5096         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel allowed");
5097         return -1;
5098 out:
5099         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5100                    params->freq);
5101         return 0;
5102 }
5103
5104
5105 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5106                                    struct p2p_go_neg_results *params,
5107                                    int freq, int ht40, int vht,
5108                                    const struct p2p_channels *channels)
5109 {
5110         struct wpa_used_freq_data *freqs;
5111         unsigned int pref_freq, cand_freq;
5112         unsigned int num, i;
5113
5114         os_memset(params, 0, sizeof(*params));
5115         params->role_go = 1;
5116         params->ht40 = ht40;
5117         params->vht = vht;
5118         if (freq) {
5119                 if (!freq_included(channels, freq)) {
5120                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
5121                                    "accepted", freq);
5122                         return -1;
5123                 }
5124                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
5125                            "frequency %d MHz", freq);
5126                 params->freq = freq;
5127         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5128                    wpa_s->conf->p2p_oper_channel >= 1 &&
5129                    wpa_s->conf->p2p_oper_channel <= 11 &&
5130                    freq_included(channels,
5131                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5132                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5133                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5134                            "frequency %d MHz", params->freq);
5135         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5136                     wpa_s->conf->p2p_oper_reg_class == 116 ||
5137                     wpa_s->conf->p2p_oper_reg_class == 117 ||
5138                     wpa_s->conf->p2p_oper_reg_class == 124 ||
5139                     wpa_s->conf->p2p_oper_reg_class == 126 ||
5140                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5141                    freq_included(channels,
5142                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5143                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5144                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5145                            "frequency %d MHz", params->freq);
5146         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5147                    wpa_s->best_overall_freq > 0 &&
5148                    p2p_supported_freq_go(wpa_s->global->p2p,
5149                                          wpa_s->best_overall_freq) &&
5150                    freq_included(channels, wpa_s->best_overall_freq)) {
5151                 params->freq = wpa_s->best_overall_freq;
5152                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5153                            "channel %d MHz", params->freq);
5154         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5155                    wpa_s->best_24_freq > 0 &&
5156                    p2p_supported_freq_go(wpa_s->global->p2p,
5157                                          wpa_s->best_24_freq) &&
5158                    freq_included(channels, wpa_s->best_24_freq)) {
5159                 params->freq = wpa_s->best_24_freq;
5160                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5161                            "channel %d MHz", params->freq);
5162         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5163                    wpa_s->best_5_freq > 0 &&
5164                    p2p_supported_freq_go(wpa_s->global->p2p,
5165                                          wpa_s->best_5_freq) &&
5166                    freq_included(channels, wpa_s->best_5_freq)) {
5167                 params->freq = wpa_s->best_5_freq;
5168                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5169                            "channel %d MHz", params->freq);
5170         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5171                                                   channels))) {
5172                 params->freq = pref_freq;
5173                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5174                            "channels", params->freq);
5175         } else {
5176                 /* no preference, select some channel */
5177                 if (wpas_p2p_select_freq_no_pref(wpa_s, params, channels) < 0)
5178                         return -1;
5179         }
5180
5181         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5182                           sizeof(struct wpa_used_freq_data));
5183         if (!freqs)
5184                 return -1;
5185
5186         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5187                                         wpa_s->num_multichan_concurrent);
5188
5189         cand_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5190
5191         /* First try the best used frequency if possible */
5192         if (!freq && cand_freq > 0 && freq_included(channels, cand_freq)) {
5193                 params->freq = cand_freq;
5194         } else if (!freq) {
5195                 /* Try any of the used frequencies */
5196                 for (i = 0; i < num; i++) {
5197                         if (freq_included(channels, freqs[i].freq)) {
5198                                 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5199                                            freqs[i].freq);
5200                                 params->freq = freqs[i].freq;
5201                                 break;
5202                         }
5203                 }
5204
5205                 if (i == num) {
5206                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5207                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5208                                 os_free(freqs);
5209                                 return -1;
5210                         } else {
5211                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5212                         }
5213                 }
5214         } else {
5215                 for (i = 0; i < num; i++) {
5216                         if (freqs[i].freq == freq)
5217                                 break;
5218                 }
5219
5220                 if (i == num) {
5221                         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5222                                 if (freq)
5223                                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5224                                 os_free(freqs);
5225                                 return -1;
5226                         } else {
5227                                 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5228                         }
5229                 }
5230         }
5231
5232         os_free(freqs);
5233         return 0;
5234 }
5235
5236
5237 static struct wpa_supplicant *
5238 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5239                          int go)
5240 {
5241         struct wpa_supplicant *group_wpa_s;
5242
5243         if (!wpas_p2p_create_iface(wpa_s)) {
5244                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5245                         "operations");
5246                 wpa_s->p2p_first_connection_timeout = 0;
5247                 return wpa_s;
5248         }
5249
5250         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5251                                          WPA_IF_P2P_CLIENT) < 0) {
5252                 wpa_msg_global(wpa_s, MSG_ERROR,
5253                                "P2P: Failed to add group interface");
5254                 return NULL;
5255         }
5256         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5257         if (group_wpa_s == NULL) {
5258                 wpa_msg_global(wpa_s, MSG_ERROR,
5259                                "P2P: Failed to initialize group interface");
5260                 wpas_p2p_remove_pending_group_interface(wpa_s);
5261                 return NULL;
5262         }
5263
5264         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5265                 group_wpa_s->ifname);
5266         group_wpa_s->p2p_first_connection_timeout = 0;
5267         return group_wpa_s;
5268 }
5269
5270
5271 /**
5272  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5273  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5274  * @persistent_group: Whether to create a persistent group
5275  * @freq: Frequency for the group or 0 to indicate no hardcoding
5276  * @ht40: Start GO with 40 MHz channel width
5277  * @vht:  Start GO with VHT support
5278  * Returns: 0 on success, -1 on failure
5279  *
5280  * This function creates a new P2P group with the local end as the Group Owner,
5281  * i.e., without using Group Owner Negotiation.
5282  */
5283 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5284                        int freq, int ht40, int vht)
5285 {
5286         struct p2p_go_neg_results params;
5287
5288         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5289                 return -1;
5290
5291         os_free(wpa_s->global->add_psk);
5292         wpa_s->global->add_psk = NULL;
5293
5294         /* Make sure we are not running find during connection establishment */
5295         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5296         wpas_p2p_stop_find_oper(wpa_s);
5297
5298         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5299         if (freq < 0)
5300                 return -1;
5301
5302         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5303                 return -1;
5304         if (params.freq &&
5305             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5306                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5307                            "(%u MHz) is not supported for P2P uses",
5308                            params.freq);
5309                 return -1;
5310         }
5311         p2p_go_params(wpa_s->global->p2p, &params);
5312         params.persistent_group = persistent_group;
5313
5314         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5315         if (wpa_s == NULL)
5316                 return -1;
5317         wpas_start_wps_go(wpa_s, &params, 0);
5318
5319         return 0;
5320 }
5321
5322
5323 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5324                                  struct wpa_ssid *params, int addr_allocated,
5325                                  int freq)
5326 {
5327         struct wpa_ssid *ssid;
5328
5329         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5330         if (wpa_s == NULL)
5331                 return -1;
5332         wpa_s->p2p_last_4way_hs_fail = NULL;
5333
5334         wpa_supplicant_ap_deinit(wpa_s);
5335
5336         ssid = wpa_config_add_network(wpa_s->conf);
5337         if (ssid == NULL)
5338                 return -1;
5339         wpa_config_set_network_defaults(ssid);
5340         ssid->temporary = 1;
5341         ssid->proto = WPA_PROTO_RSN;
5342         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5343         ssid->group_cipher = WPA_CIPHER_CCMP;
5344         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5345         ssid->ssid = os_malloc(params->ssid_len);
5346         if (ssid->ssid == NULL) {
5347                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5348                 return -1;
5349         }
5350         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5351         ssid->ssid_len = params->ssid_len;
5352         ssid->p2p_group = 1;
5353         ssid->export_keys = 1;
5354         if (params->psk_set) {
5355                 os_memcpy(ssid->psk, params->psk, 32);
5356                 ssid->psk_set = 1;
5357         }
5358         if (params->passphrase)
5359                 ssid->passphrase = os_strdup(params->passphrase);
5360
5361         wpa_s->show_group_started = 1;
5362         wpa_s->p2p_in_invitation = 1;
5363         wpa_s->p2p_invite_go_freq = freq;
5364
5365         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5366                              NULL);
5367         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5368                                wpas_p2p_group_formation_timeout,
5369                                wpa_s->parent, NULL);
5370         wpa_supplicant_select_network(wpa_s, ssid);
5371
5372         return 0;
5373 }
5374
5375
5376 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5377                                   struct wpa_ssid *ssid, int addr_allocated,
5378                                   int force_freq, int neg_freq, int ht40,
5379                                   int vht, const struct p2p_channels *channels,
5380                                   int connection_timeout)
5381 {
5382         struct p2p_go_neg_results params;
5383         int go = 0, freq;
5384
5385         if (ssid->disabled != 2 || ssid->ssid == NULL)
5386                 return -1;
5387
5388         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5389             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5390                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5391                            "already running");
5392                 return 0;
5393         }
5394
5395         os_free(wpa_s->global->add_psk);
5396         wpa_s->global->add_psk = NULL;
5397
5398         /* Make sure we are not running find during connection establishment */
5399         wpas_p2p_stop_find_oper(wpa_s);
5400
5401         wpa_s->p2p_fallback_to_go_neg = 0;
5402
5403         if (force_freq > 0) {
5404                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5405                 if (freq < 0)
5406                         return -1;
5407         } else {
5408                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5409                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5410                         freq = 0;
5411         }
5412
5413         if (ssid->mode == WPAS_MODE_INFRA)
5414                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5415
5416         if (ssid->mode != WPAS_MODE_P2P_GO)
5417                 return -1;
5418
5419         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5420                 return -1;
5421
5422         params.role_go = 1;
5423         params.psk_set = ssid->psk_set;
5424         if (params.psk_set)
5425                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5426         if (ssid->passphrase) {
5427                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5428                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5429                                    "persistent group");
5430                         return -1;
5431                 }
5432                 os_strlcpy(params.passphrase, ssid->passphrase,
5433                            sizeof(params.passphrase));
5434         }
5435         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5436         params.ssid_len = ssid->ssid_len;
5437         params.persistent_group = 1;
5438
5439         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5440         if (wpa_s == NULL)
5441                 return -1;
5442
5443         wpa_s->p2p_first_connection_timeout = connection_timeout;
5444         wpas_start_wps_go(wpa_s, &params, 0);
5445
5446         return 0;
5447 }
5448
5449
5450 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5451                                struct wpabuf *proberesp_ies)
5452 {
5453         struct wpa_supplicant *wpa_s = ctx;
5454         if (wpa_s->ap_iface) {
5455                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5456                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5457                         wpabuf_free(beacon_ies);
5458                         wpabuf_free(proberesp_ies);
5459                         return;
5460                 }
5461                 if (beacon_ies) {
5462                         wpabuf_free(hapd->p2p_beacon_ie);
5463                         hapd->p2p_beacon_ie = beacon_ies;
5464                 }
5465                 wpabuf_free(hapd->p2p_probe_resp_ie);
5466                 hapd->p2p_probe_resp_ie = proberesp_ies;
5467         } else {
5468                 wpabuf_free(beacon_ies);
5469                 wpabuf_free(proberesp_ies);
5470         }
5471         wpa_supplicant_ap_update_beacon(wpa_s);
5472 }
5473
5474
5475 static void wpas_p2p_idle_update(void *ctx, int idle)
5476 {
5477         struct wpa_supplicant *wpa_s = ctx;
5478         if (!wpa_s->ap_iface)
5479                 return;
5480         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5481         if (idle) {
5482                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5483                     wpa_s->p2p_in_provisioning) {
5484                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5485                         return;
5486                 }
5487                 wpas_p2p_set_group_idle_timeout(wpa_s);
5488         } else
5489                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5490 }
5491
5492
5493 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5494                                        struct wpa_ssid *ssid)
5495 {
5496         struct p2p_group *group;
5497         struct p2p_group_config *cfg;
5498
5499         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5500                 return NULL;
5501
5502         cfg = os_zalloc(sizeof(*cfg));
5503         if (cfg == NULL)
5504                 return NULL;
5505
5506         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5507                 cfg->persistent_group = 2;
5508         else if (ssid->p2p_persistent_group)
5509                 cfg->persistent_group = 1;
5510         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5511         if (wpa_s->max_stations &&
5512             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5513                 cfg->max_clients = wpa_s->max_stations;
5514         else
5515                 cfg->max_clients = wpa_s->conf->max_num_sta;
5516         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5517         cfg->ssid_len = ssid->ssid_len;
5518         cfg->freq = ssid->frequency;
5519         cfg->cb_ctx = wpa_s;
5520         cfg->ie_update = wpas_p2p_ie_update;
5521         cfg->idle_update = wpas_p2p_idle_update;
5522
5523         group = p2p_group_init(wpa_s->global->p2p, cfg);
5524         if (group == NULL)
5525                 os_free(cfg);
5526         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5527                 p2p_group_notif_formation_done(group);
5528         wpa_s->p2p_group = group;
5529         return group;
5530 }
5531
5532
5533 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5534                           int registrar)
5535 {
5536         struct wpa_ssid *ssid = wpa_s->current_ssid;
5537
5538         if (!wpa_s->p2p_in_provisioning) {
5539                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5540                            "provisioning not in progress");
5541                 return;
5542         }
5543
5544         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5545                 u8 go_dev_addr[ETH_ALEN];
5546                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5547                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5548                                           ssid->ssid_len);
5549                 /* Clear any stored provisioning info */
5550                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5551         }
5552
5553         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5554                              NULL);
5555         wpa_s->p2p_go_group_formation_completed = 1;
5556         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5557                 /*
5558                  * Use a separate timeout for initial data connection to
5559                  * complete to allow the group to be removed automatically if
5560                  * something goes wrong in this step before the P2P group idle
5561                  * timeout mechanism is taken into use.
5562                  */
5563                 wpa_dbg(wpa_s, MSG_DEBUG,
5564                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5565                         P2P_MAX_INITIAL_CONN_WAIT);
5566                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5567                                        wpas_p2p_group_formation_timeout,
5568                                        wpa_s->parent, NULL);
5569         } else if (ssid) {
5570                 /*
5571                  * Use a separate timeout for initial data connection to
5572                  * complete to allow the group to be removed automatically if
5573                  * the client does not complete data connection successfully.
5574                  */
5575                 wpa_dbg(wpa_s, MSG_DEBUG,
5576                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5577                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5578                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5579                                        wpas_p2p_group_formation_timeout,
5580                                        wpa_s->parent, NULL);
5581                 /*
5582                  * Complete group formation on first successful data connection
5583                  */
5584                 wpa_s->p2p_go_group_formation_completed = 0;
5585         }
5586         if (wpa_s->global->p2p)
5587                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5588         wpas_group_formation_completed(wpa_s, 1);
5589 }
5590
5591
5592 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5593                          struct wps_event_fail *fail)
5594 {
5595         if (!wpa_s->p2p_in_provisioning) {
5596                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5597                            "provisioning not in progress");
5598                 return;
5599         }
5600
5601         if (wpa_s->go_params) {
5602                 p2p_clear_provisioning_info(
5603                         wpa_s->global->p2p,
5604                         wpa_s->go_params->peer_device_addr);
5605         }
5606
5607         wpas_notify_p2p_wps_failed(wpa_s, fail);
5608
5609         if (wpa_s == wpa_s->global->p2p_group_formation) {
5610                 /*
5611                  * Allow some time for the failed WPS negotiation exchange to
5612                  * complete, but remove the group since group formation cannot
5613                  * succeed after provisioning failure.
5614                  */
5615                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5616                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5617                 eloop_deplete_timeout(0, 50000,
5618                                       wpas_p2p_group_formation_timeout,
5619                                       wpa_s->parent, NULL);
5620         }
5621 }
5622
5623
5624 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5625 {
5626         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5627             !wpa_s->p2p_in_provisioning)
5628                 return 0;
5629
5630         wpas_p2p_grpform_fail_after_wps(wpa_s);
5631
5632         return 1;
5633 }
5634
5635
5636 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5637                        const char *config_method,
5638                        enum wpas_p2p_prov_disc_use use)
5639 {
5640         u16 config_methods;
5641
5642         wpa_s->p2p_fallback_to_go_neg = 0;
5643         wpa_s->pending_pd_use = NORMAL_PD;
5644         if (os_strncmp(config_method, "display", 7) == 0)
5645                 config_methods = WPS_CONFIG_DISPLAY;
5646         else if (os_strncmp(config_method, "keypad", 6) == 0)
5647                 config_methods = WPS_CONFIG_KEYPAD;
5648         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5649                  os_strncmp(config_method, "pushbutton", 10) == 0)
5650                 config_methods = WPS_CONFIG_PUSHBUTTON;
5651         else {
5652                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5653                 return -1;
5654         }
5655
5656         if (use == WPAS_P2P_PD_AUTO) {
5657                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5658                 wpa_s->pending_pd_config_methods = config_methods;
5659                 wpa_s->p2p_auto_pd = 1;
5660                 wpa_s->p2p_auto_join = 0;
5661                 wpa_s->pending_pd_before_join = 0;
5662                 wpa_s->auto_pd_scan_retry = 0;
5663                 wpas_p2p_stop_find(wpa_s);
5664                 wpa_s->p2p_join_scan_count = 0;
5665                 os_get_reltime(&wpa_s->p2p_auto_started);
5666                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5667                            wpa_s->p2p_auto_started.sec,
5668                            wpa_s->p2p_auto_started.usec);
5669                 wpas_p2p_join_scan(wpa_s, NULL);
5670                 return 0;
5671         }
5672
5673         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5674                 return -1;
5675
5676         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5677                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5678                                  0, 1);
5679 }
5680
5681
5682 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5683                               char *end)
5684 {
5685         return p2p_scan_result_text(ies, ies_len, buf, end);
5686 }
5687
5688
5689 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5690 {
5691         if (!offchannel_pending_action_tx(wpa_s))
5692                 return;
5693
5694         wpas_p2p_action_tx_clear(wpa_s);
5695
5696         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5697                    "operation request");
5698         offchannel_clear_pending_action_tx(wpa_s);
5699 }
5700
5701
5702 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5703                   enum p2p_discovery_type type,
5704                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5705                   const u8 *dev_id, unsigned int search_delay)
5706 {
5707         wpas_p2p_clear_pending_action_tx(wpa_s);
5708         wpa_s->p2p_long_listen = 0;
5709
5710         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5711             wpa_s->p2p_in_provisioning)
5712                 return -1;
5713
5714         wpa_supplicant_cancel_sched_scan(wpa_s);
5715
5716         return p2p_find(wpa_s->global->p2p, timeout, type,
5717                         num_req_dev_types, req_dev_types, dev_id,
5718                         search_delay);
5719 }
5720
5721
5722 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5723 {
5724         wpas_p2p_clear_pending_action_tx(wpa_s);
5725         wpa_s->p2p_long_listen = 0;
5726         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5727         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5728
5729         if (wpa_s->global->p2p)
5730                 p2p_stop_find(wpa_s->global->p2p);
5731
5732         return 0;
5733 }
5734
5735
5736 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5737 {
5738         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5739                 return;
5740         wpas_p2p_remove_pending_group_interface(wpa_s);
5741 }
5742
5743
5744 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5745 {
5746         struct wpa_supplicant *wpa_s = eloop_ctx;
5747         wpa_s->p2p_long_listen = 0;
5748 }
5749
5750
5751 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5752 {
5753         int res;
5754
5755         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5756                 return -1;
5757
5758         wpa_supplicant_cancel_sched_scan(wpa_s);
5759         wpas_p2p_clear_pending_action_tx(wpa_s);
5760
5761         if (timeout == 0) {
5762                 /*
5763                  * This is a request for unlimited Listen state. However, at
5764                  * least for now, this is mapped to a Listen state for one
5765                  * hour.
5766                  */
5767                 timeout = 3600;
5768         }
5769         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5770         wpa_s->p2p_long_listen = 0;
5771
5772         /*
5773          * Stop previous find/listen operation to avoid trying to request a new
5774          * remain-on-channel operation while the driver is still running the
5775          * previous one.
5776          */
5777         if (wpa_s->global->p2p)
5778                 p2p_stop_find(wpa_s->global->p2p);
5779
5780         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5781         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5782                 wpa_s->p2p_long_listen = timeout * 1000;
5783                 eloop_register_timeout(timeout, 0,
5784                                        wpas_p2p_long_listen_timeout,
5785                                        wpa_s, NULL);
5786         }
5787
5788         return res;
5789 }
5790
5791
5792 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5793                           u8 *buf, size_t len, int p2p_group)
5794 {
5795         struct wpabuf *p2p_ie;
5796         int ret;
5797
5798         if (wpa_s->global->p2p_disabled)
5799                 return -1;
5800         if (wpa_s->conf->p2p_disabled)
5801                 return -1;
5802         if (wpa_s->global->p2p == NULL)
5803                 return -1;
5804         if (bss == NULL)
5805                 return -1;
5806
5807         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5808         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5809                                p2p_group, p2p_ie);
5810         wpabuf_free(p2p_ie);
5811
5812         return ret;
5813 }
5814
5815
5816 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5817                           const u8 *dst, const u8 *bssid,
5818                           const u8 *ie, size_t ie_len, int ssi_signal)
5819 {
5820         if (wpa_s->global->p2p_disabled)
5821                 return 0;
5822         if (wpa_s->global->p2p == NULL)
5823                 return 0;
5824
5825         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5826                                  ie, ie_len)) {
5827         case P2P_PREQ_NOT_P2P:
5828                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5829                                  ssi_signal);
5830                 /* fall through */
5831         case P2P_PREQ_MALFORMED:
5832         case P2P_PREQ_NOT_LISTEN:
5833         case P2P_PREQ_NOT_PROCESSED:
5834         default: /* make gcc happy */
5835                 return 0;
5836         case P2P_PREQ_PROCESSED:
5837                 return 1;
5838         }
5839 }
5840
5841
5842 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5843                         const u8 *sa, const u8 *bssid,
5844                         u8 category, const u8 *data, size_t len, int freq)
5845 {
5846         if (wpa_s->global->p2p_disabled)
5847                 return;
5848         if (wpa_s->global->p2p == NULL)
5849                 return;
5850
5851         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5852                       freq);
5853 }
5854
5855
5856 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5857 {
5858         if (wpa_s->global->p2p_disabled)
5859                 return;
5860         if (wpa_s->global->p2p == NULL)
5861                 return;
5862
5863         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5864 }
5865
5866
5867 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5868 {
5869         p2p_group_deinit(wpa_s->p2p_group);
5870         wpa_s->p2p_group = NULL;
5871
5872         wpa_s->ap_configured_cb = NULL;
5873         wpa_s->ap_configured_cb_ctx = NULL;
5874         wpa_s->ap_configured_cb_data = NULL;
5875         wpa_s->connect_without_scan = NULL;
5876 }
5877
5878
5879 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5880 {
5881         wpa_s->p2p_long_listen = 0;
5882
5883         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5884                 return -1;
5885
5886         return p2p_reject(wpa_s->global->p2p, addr);
5887 }
5888
5889
5890 /* Invite to reinvoke a persistent group */
5891 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5892                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5893                     int ht40, int vht, int pref_freq)
5894 {
5895         enum p2p_invite_role role;
5896         u8 *bssid = NULL;
5897         int force_freq = 0;
5898         int res;
5899         int no_pref_freq_given = pref_freq == 0;
5900
5901         wpa_s->global->p2p_invite_group = NULL;
5902         if (peer_addr)
5903                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5904         else
5905                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5906
5907         wpa_s->p2p_persistent_go_freq = freq;
5908         wpa_s->p2p_go_ht40 = !!ht40;
5909         if (ssid->mode == WPAS_MODE_P2P_GO) {
5910                 role = P2P_INVITE_ROLE_GO;
5911                 if (peer_addr == NULL) {
5912                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5913                                    "address in invitation command");
5914                         return -1;
5915                 }
5916                 if (wpas_p2p_create_iface(wpa_s)) {
5917                         if (wpas_p2p_add_group_interface(wpa_s,
5918                                                          WPA_IF_P2P_GO) < 0) {
5919                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5920                                            "allocate a new interface for the "
5921                                            "group");
5922                                 return -1;
5923                         }
5924                         bssid = wpa_s->pending_interface_addr;
5925                 } else
5926                         bssid = wpa_s->own_addr;
5927         } else {
5928                 role = P2P_INVITE_ROLE_CLIENT;
5929                 peer_addr = ssid->bssid;
5930         }
5931         wpa_s->pending_invite_ssid_id = ssid->id;
5932
5933         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5934                                    role == P2P_INVITE_ROLE_GO);
5935         if (res)
5936                 return res;
5937
5938         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5939                 return -1;
5940
5941         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5942             no_pref_freq_given && pref_freq > 0 &&
5943             wpa_s->num_multichan_concurrent > 1 &&
5944             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5945                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5946                            pref_freq);
5947                 pref_freq = 0;
5948         }
5949
5950         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5951                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5952                           1, pref_freq, -1);
5953 }
5954
5955
5956 /* Invite to join an active group */
5957 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5958                           const u8 *peer_addr, const u8 *go_dev_addr)
5959 {
5960         struct wpa_global *global = wpa_s->global;
5961         enum p2p_invite_role role;
5962         u8 *bssid = NULL;
5963         struct wpa_ssid *ssid;
5964         int persistent;
5965         int freq = 0, force_freq = 0, pref_freq = 0;
5966         int res;
5967
5968         wpa_s->p2p_persistent_go_freq = 0;
5969         wpa_s->p2p_go_ht40 = 0;
5970         wpa_s->p2p_go_vht = 0;
5971
5972         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5973                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5974                         break;
5975         }
5976         if (wpa_s == NULL) {
5977                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5978                 return -1;
5979         }
5980
5981         ssid = wpa_s->current_ssid;
5982         if (ssid == NULL) {
5983                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5984                            "invitation");
5985                 return -1;
5986         }
5987
5988         wpa_s->global->p2p_invite_group = wpa_s;
5989         persistent = ssid->p2p_persistent_group &&
5990                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5991                                         ssid->ssid, ssid->ssid_len);
5992
5993         if (ssid->mode == WPAS_MODE_P2P_GO) {
5994                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5995                 bssid = wpa_s->own_addr;
5996                 if (go_dev_addr == NULL)
5997                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5998                 freq = ssid->frequency;
5999         } else {
6000                 role = P2P_INVITE_ROLE_CLIENT;
6001                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6002                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6003                                    "invite to current group");
6004                         return -1;
6005                 }
6006                 bssid = wpa_s->bssid;
6007                 if (go_dev_addr == NULL &&
6008                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6009                         go_dev_addr = wpa_s->go_dev_addr;
6010                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6011                         (int) wpa_s->assoc_freq;
6012         }
6013         wpa_s->parent->pending_invite_ssid_id = -1;
6014
6015         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6016                 return -1;
6017
6018         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6019                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
6020         if (res)
6021                 return res;
6022         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6023
6024         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6025                           ssid->ssid, ssid->ssid_len, force_freq,
6026                           go_dev_addr, persistent, pref_freq, -1);
6027 }
6028
6029
6030 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6031 {
6032         struct wpa_ssid *ssid = wpa_s->current_ssid;
6033         u8 go_dev_addr[ETH_ALEN];
6034         int network_id = -1;
6035         int persistent;
6036         int freq;
6037         u8 ip[3 * 4];
6038         char ip_addr[100];
6039
6040         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6041                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6042                                      wpa_s->parent, NULL);
6043         }
6044
6045         if (!wpa_s->show_group_started || !ssid)
6046                 return;
6047
6048         wpa_s->show_group_started = 0;
6049
6050         os_memset(go_dev_addr, 0, ETH_ALEN);
6051         if (ssid->bssid_set)
6052                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6053         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6054                                                ssid->ssid_len);
6055         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6056
6057         if (wpa_s->global->p2p_group_formation == wpa_s)
6058                 wpa_s->global->p2p_group_formation = NULL;
6059
6060         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6061                 (int) wpa_s->assoc_freq;
6062
6063         ip_addr[0] = '\0';
6064         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6065                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
6066                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6067                             ip[0], ip[1], ip[2], ip[3],
6068                             ip[4], ip[5], ip[6], ip[7],
6069                             ip[8], ip[9], ip[10], ip[11]);
6070         }
6071
6072         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6073                                ssid->passphrase == NULL && ssid->psk_set ?
6074                                ssid->psk : NULL,
6075                                ssid->passphrase, go_dev_addr, persistent,
6076                                ip_addr);
6077
6078         if (persistent)
6079                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6080                                                              ssid, go_dev_addr);
6081         if (network_id < 0)
6082                 network_id = ssid->id;
6083         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6084 }
6085
6086
6087 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6088                           u32 interval1, u32 duration2, u32 interval2)
6089 {
6090         int ret;
6091
6092         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6093                 return -1;
6094
6095         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6096             wpa_s->current_ssid == NULL ||
6097             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6098                 return -1;
6099
6100         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6101                                wpa_s->own_addr, wpa_s->assoc_freq,
6102                                duration1, interval1, duration2, interval2);
6103         if (ret == 0)
6104                 wpa_s->waiting_presence_resp = 1;
6105
6106         return ret;
6107 }
6108
6109
6110 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6111                         unsigned int interval)
6112 {
6113         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6114                 return -1;
6115
6116         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6117 }
6118
6119
6120 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6121 {
6122         if (wpa_s->current_ssid == NULL) {
6123                 /*
6124                  * current_ssid can be cleared when P2P client interface gets
6125                  * disconnected, so assume this interface was used as P2P
6126                  * client.
6127                  */
6128                 return 1;
6129         }
6130         return wpa_s->current_ssid->p2p_group &&
6131                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6132 }
6133
6134
6135 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6136 {
6137         struct wpa_supplicant *wpa_s = eloop_ctx;
6138
6139         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6140                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6141                            "disabled");
6142                 return;
6143         }
6144
6145         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6146                    "group");
6147         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6148 }
6149
6150
6151 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6152 {
6153         int timeout;
6154
6155         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6156                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6157
6158         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6159                 return;
6160
6161         timeout = wpa_s->conf->p2p_group_idle;
6162         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6163             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6164             timeout = P2P_MAX_CLIENT_IDLE;
6165
6166         if (timeout == 0)
6167                 return;
6168
6169         if (timeout < 0) {
6170                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6171                         timeout = 0; /* special client mode no-timeout */
6172                 else
6173                         return;
6174         }
6175
6176         if (wpa_s->p2p_in_provisioning) {
6177                 /*
6178                  * Use the normal group formation timeout during the
6179                  * provisioning phase to avoid terminating this process too
6180                  * early due to group idle timeout.
6181                  */
6182                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6183                            "during provisioning");
6184                 return;
6185         }
6186
6187         if (wpa_s->show_group_started) {
6188                 /*
6189                  * Use the normal group formation timeout between the end of
6190                  * the provisioning phase and completion of 4-way handshake to
6191                  * avoid terminating this process too early due to group idle
6192                  * timeout.
6193                  */
6194                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6195                            "while waiting for initial 4-way handshake to "
6196                            "complete");
6197                 return;
6198         }
6199
6200         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6201                    timeout);
6202         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6203                                wpa_s, NULL);
6204 }
6205
6206
6207 /* Returns 1 if the interface was removed */
6208 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6209                           u16 reason_code, const u8 *ie, size_t ie_len,
6210                           int locally_generated)
6211 {
6212         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6213                 return 0;
6214
6215         if (!locally_generated)
6216                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6217                                  ie_len);
6218
6219         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6220             wpa_s->current_ssid &&
6221             wpa_s->current_ssid->p2p_group &&
6222             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6223                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6224                            "session is ending");
6225                 if (wpas_p2p_group_delete(wpa_s,
6226                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6227                     > 0)
6228                         return 1;
6229         }
6230
6231         return 0;
6232 }
6233
6234
6235 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6236                              u16 reason_code, const u8 *ie, size_t ie_len,
6237                              int locally_generated)
6238 {
6239         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6240                 return;
6241
6242         if (!locally_generated)
6243                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6244                                    ie_len);
6245 }
6246
6247
6248 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6249 {
6250         struct p2p_data *p2p = wpa_s->global->p2p;
6251
6252         if (p2p == NULL)
6253                 return;
6254
6255         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6256                 return;
6257
6258         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6259                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6260
6261         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6262                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6263
6264         if (wpa_s->wps &&
6265             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6266                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6267
6268         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6269                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6270
6271         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6272                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6273                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6274                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6275                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6276         }
6277
6278         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6279                 p2p_set_sec_dev_types(p2p,
6280                                       (void *) wpa_s->conf->sec_device_type,
6281                                       wpa_s->conf->num_sec_device_types);
6282
6283         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6284                 int i;
6285                 p2p_remove_wps_vendor_extensions(p2p);
6286                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6287                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6288                                 continue;
6289                         p2p_add_wps_vendor_extension(
6290                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6291                 }
6292         }
6293
6294         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6295             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6296                 char country[3];
6297                 country[0] = wpa_s->conf->country[0];
6298                 country[1] = wpa_s->conf->country[1];
6299                 country[2] = 0x04;
6300                 p2p_set_country(p2p, country);
6301         }
6302
6303         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6304                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6305                                      wpa_s->conf->p2p_ssid_postfix ?
6306                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6307                                      0);
6308         }
6309
6310         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6311                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6312
6313         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6314                 u8 reg_class, channel;
6315                 int ret;
6316                 unsigned int r;
6317                 u8 channel_forced;
6318
6319                 if (wpa_s->conf->p2p_listen_reg_class &&
6320                     wpa_s->conf->p2p_listen_channel) {
6321                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6322                         channel = wpa_s->conf->p2p_listen_channel;
6323                         channel_forced = 1;
6324                 } else {
6325                         reg_class = 81;
6326                         /*
6327                          * Pick one of the social channels randomly as the
6328                          * listen channel.
6329                          */
6330                         os_get_random((u8 *) &r, sizeof(r));
6331                         channel = 1 + (r % 3) * 5;
6332                         channel_forced = 0;
6333                 }
6334                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6335                                              channel_forced);
6336                 if (ret)
6337                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6338                                    "failed: %d", ret);
6339         }
6340         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6341                 u8 op_reg_class, op_channel, cfg_op_channel;
6342                 int ret = 0;
6343                 unsigned int r;
6344                 if (wpa_s->conf->p2p_oper_reg_class &&
6345                     wpa_s->conf->p2p_oper_channel) {
6346                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6347                         op_channel = wpa_s->conf->p2p_oper_channel;
6348                         cfg_op_channel = 1;
6349                 } else {
6350                         op_reg_class = 81;
6351                         /*
6352                          * Use random operation channel from (1, 6, 11)
6353                          *if no other preference is indicated.
6354                          */
6355                         os_get_random((u8 *) &r, sizeof(r));
6356                         op_channel = 1 + (r % 3) * 5;
6357                         cfg_op_channel = 0;
6358                 }
6359                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6360                                            cfg_op_channel);
6361                 if (ret)
6362                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6363                                    "failed: %d", ret);
6364         }
6365
6366         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6367                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6368                                       wpa_s->conf->p2p_pref_chan) < 0) {
6369                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6370                                    "update failed");
6371                 }
6372
6373                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6374                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6375                                    "update failed");
6376                 }
6377         }
6378
6379         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6380                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6381 }
6382
6383
6384 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6385                      int duration)
6386 {
6387         if (!wpa_s->ap_iface)
6388                 return -1;
6389         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6390                                    duration);
6391 }
6392
6393
6394 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6395 {
6396         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6397                 return -1;
6398
6399         wpa_s->global->cross_connection = enabled;
6400         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6401
6402         if (!enabled) {
6403                 struct wpa_supplicant *iface;
6404
6405                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6406                 {
6407                         if (iface->cross_connect_enabled == 0)
6408                                 continue;
6409
6410                         iface->cross_connect_enabled = 0;
6411                         iface->cross_connect_in_use = 0;
6412                         wpa_msg_global(iface->parent, MSG_INFO,
6413                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6414                                        iface->ifname,
6415                                        iface->cross_connect_uplink);
6416                 }
6417         }
6418
6419         return 0;
6420 }
6421
6422
6423 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6424 {
6425         struct wpa_supplicant *iface;
6426
6427         if (!uplink->global->cross_connection)
6428                 return;
6429
6430         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6431                 if (!iface->cross_connect_enabled)
6432                         continue;
6433                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6434                     0)
6435                         continue;
6436                 if (iface->ap_iface == NULL)
6437                         continue;
6438                 if (iface->cross_connect_in_use)
6439                         continue;
6440
6441                 iface->cross_connect_in_use = 1;
6442                 wpa_msg_global(iface->parent, MSG_INFO,
6443                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6444                                iface->ifname, iface->cross_connect_uplink);
6445         }
6446 }
6447
6448
6449 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6450 {
6451         struct wpa_supplicant *iface;
6452
6453         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6454                 if (!iface->cross_connect_enabled)
6455                         continue;
6456                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6457                     0)
6458                         continue;
6459                 if (!iface->cross_connect_in_use)
6460                         continue;
6461
6462                 wpa_msg_global(iface->parent, MSG_INFO,
6463                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6464                                iface->ifname, iface->cross_connect_uplink);
6465                 iface->cross_connect_in_use = 0;
6466         }
6467 }
6468
6469
6470 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6471 {
6472         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6473             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6474             wpa_s->cross_connect_disallowed)
6475                 wpas_p2p_disable_cross_connect(wpa_s);
6476         else
6477                 wpas_p2p_enable_cross_connect(wpa_s);
6478         if (!wpa_s->ap_iface &&
6479             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6480                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6481 }
6482
6483
6484 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6485 {
6486         wpas_p2p_disable_cross_connect(wpa_s);
6487         if (!wpa_s->ap_iface &&
6488             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6489                                          wpa_s, NULL))
6490                 wpas_p2p_set_group_idle_timeout(wpa_s);
6491 }
6492
6493
6494 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6495 {
6496         struct wpa_supplicant *iface;
6497
6498         if (!wpa_s->global->cross_connection)
6499                 return;
6500
6501         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6502                 if (iface == wpa_s)
6503                         continue;
6504                 if (iface->drv_flags &
6505                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6506                         continue;
6507                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6508                         continue;
6509
6510                 wpa_s->cross_connect_enabled = 1;
6511                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6512                            sizeof(wpa_s->cross_connect_uplink));
6513                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6514                            "%s to %s whenever uplink is available",
6515                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6516
6517                 if (iface->ap_iface || iface->current_ssid == NULL ||
6518                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6519                     iface->cross_connect_disallowed ||
6520                     iface->wpa_state != WPA_COMPLETED)
6521                         break;
6522
6523                 wpa_s->cross_connect_in_use = 1;
6524                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6525                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6526                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6527                 break;
6528         }
6529 }
6530
6531
6532 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6533 {
6534         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6535             !wpa_s->p2p_in_provisioning)
6536                 return 0; /* not P2P client operation */
6537
6538         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6539                    "session overlap");
6540         if (wpa_s != wpa_s->parent)
6541                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6542         wpas_p2p_group_formation_failed(wpa_s);
6543         return 1;
6544 }
6545
6546
6547 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6548 {
6549         struct wpa_supplicant *wpa_s = eloop_ctx;
6550         wpas_p2p_notif_pbc_overlap(wpa_s);
6551 }
6552
6553
6554 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6555 {
6556         struct p2p_channels chan, cli_chan;
6557         struct wpa_supplicant *ifs;
6558
6559         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6560                 return;
6561
6562         os_memset(&chan, 0, sizeof(chan));
6563         os_memset(&cli_chan, 0, sizeof(cli_chan));
6564         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6565                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6566                            "channel list");
6567                 return;
6568         }
6569
6570         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6571
6572         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6573                 int freq;
6574                 if (!ifs->current_ssid ||
6575                     !ifs->current_ssid->p2p_group ||
6576                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6577                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6578                                 continue;
6579                 freq = ifs->current_ssid->frequency;
6580                 if (freq_included(&chan, freq)) {
6581                         wpa_dbg(ifs, MSG_DEBUG,
6582                                 "P2P GO operating frequency %d MHz in valid range",
6583                                 freq);
6584                         continue;
6585                 }
6586
6587                 wpa_dbg(ifs, MSG_DEBUG,
6588                         "P2P GO operating in invalid frequency %d MHz", freq);
6589                 /* TODO: Consider using CSA or removing the group within
6590                  * wpa_supplicant */
6591                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6592         }
6593 }
6594
6595
6596 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6597                                      struct wpa_scan_results *scan_res)
6598 {
6599         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6600 }
6601
6602
6603 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6604 {
6605         struct wpa_global *global = wpa_s->global;
6606         int found = 0;
6607         const u8 *peer;
6608
6609         if (global->p2p == NULL)
6610                 return -1;
6611
6612         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6613
6614         if (wpa_s->pending_interface_name[0] &&
6615             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6616                 found = 1;
6617
6618         peer = p2p_get_go_neg_peer(global->p2p);
6619         if (peer) {
6620                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6621                            MACSTR, MAC2STR(peer));
6622                 p2p_unauthorize(global->p2p, peer);
6623                 found = 1;
6624         }
6625
6626         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6627                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6628                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6629                 found = 1;
6630         }
6631
6632         if (wpa_s->pending_pd_before_join) {
6633                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6634                 wpa_s->pending_pd_before_join = 0;
6635                 found = 1;
6636         }
6637
6638         wpas_p2p_stop_find(wpa_s);
6639
6640         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6641                 if (wpa_s == global->p2p_group_formation &&
6642                     (wpa_s->p2p_in_provisioning ||
6643                      wpa_s->parent->pending_interface_type ==
6644                      WPA_IF_P2P_CLIENT)) {
6645                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6646                                    "formation found - cancelling",
6647                                    wpa_s->ifname);
6648                         found = 1;
6649                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6650                                              wpa_s->parent, NULL);
6651                         if (wpa_s->p2p_in_provisioning) {
6652                                 wpas_group_formation_completed(wpa_s, 0);
6653                                 break;
6654                         }
6655                         wpas_p2p_group_delete(wpa_s,
6656                                               P2P_GROUP_REMOVAL_REQUESTED);
6657                         break;
6658                 } else if (wpa_s->p2p_in_invitation) {
6659                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6660                                    wpa_s->ifname);
6661                         found = 1;
6662                         wpas_p2p_group_formation_failed(wpa_s);
6663                 }
6664         }
6665
6666         if (!found) {
6667                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6668                 return -1;
6669         }
6670
6671         return 0;
6672 }
6673
6674
6675 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6676 {
6677         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6678                 return;
6679
6680         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6681                    "being available anymore");
6682         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6683 }
6684
6685
6686 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6687                                    int freq_24, int freq_5, int freq_overall)
6688 {
6689         struct p2p_data *p2p = wpa_s->global->p2p;
6690         if (p2p == NULL)
6691                 return;
6692         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6693 }
6694
6695
6696 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6697 {
6698         u8 peer[ETH_ALEN];
6699         struct p2p_data *p2p = wpa_s->global->p2p;
6700
6701         if (p2p == NULL)
6702                 return -1;
6703
6704         if (hwaddr_aton(addr, peer))
6705                 return -1;
6706
6707         return p2p_unauthorize(p2p, peer);
6708 }
6709
6710
6711 /**
6712  * wpas_p2p_disconnect - Disconnect from a P2P Group
6713  * @wpa_s: Pointer to wpa_supplicant data
6714  * Returns: 0 on success, -1 on failure
6715  *
6716  * This can be used to disconnect from a group in which the local end is a P2P
6717  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6718  * virtual network interface was created for this group, that interface will be
6719  * removed. Otherwise, only the configured P2P group network will be removed
6720  * from the interface.
6721  */
6722 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6723 {
6724
6725         if (wpa_s == NULL)
6726                 return -1;
6727
6728         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6729                 -1 : 0;
6730 }
6731
6732
6733 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6734 {
6735         int ret;
6736
6737         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6738                 return 0;
6739
6740         ret = p2p_in_progress(wpa_s->global->p2p);
6741         if (ret == 0) {
6742                 /*
6743                  * Check whether there is an ongoing WPS provisioning step (or
6744                  * other parts of group formation) on another interface since
6745                  * p2p_in_progress() does not report this to avoid issues for
6746                  * scans during such provisioning step.
6747                  */
6748                 if (wpa_s->global->p2p_group_formation &&
6749                     wpa_s->global->p2p_group_formation != wpa_s) {
6750                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6751                                 "in group formation",
6752                                 wpa_s->global->p2p_group_formation->ifname);
6753                         ret = 1;
6754                 }
6755         }
6756
6757         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6758                 struct os_reltime now;
6759                 os_get_reltime(&now);
6760                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6761                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6762                         /* Wait for the first client has expired */
6763                         wpa_s->global->p2p_go_wait_client.sec = 0;
6764                 } else {
6765                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6766                         ret = 1;
6767                 }
6768         }
6769
6770         return ret;
6771 }
6772
6773
6774 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6775                               struct wpa_ssid *ssid)
6776 {
6777         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6778             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6779                                  wpa_s->parent, NULL) > 0) {
6780                 /**
6781                  * Remove the network by scheduling the group formation
6782                  * timeout to happen immediately. The teardown code
6783                  * needs to be scheduled to run asynch later so that we
6784                  * don't delete data from under ourselves unexpectedly.
6785                  * Calling wpas_p2p_group_formation_timeout directly
6786                  * causes a series of crashes in WPS failure scenarios.
6787                  */
6788                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6789                            "P2P group network getting removed");
6790                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6791                                        wpa_s->parent, NULL);
6792         }
6793 }
6794
6795
6796 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6797                                           const u8 *addr, const u8 *ssid,
6798                                           size_t ssid_len)
6799 {
6800         struct wpa_ssid *s;
6801         size_t i;
6802
6803         for (s = wpa_s->conf->ssid; s; s = s->next) {
6804                 if (s->disabled != 2)
6805                         continue;
6806                 if (ssid &&
6807                     (ssid_len != s->ssid_len ||
6808                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6809                         continue;
6810                 if (addr == NULL) {
6811                         if (s->mode == WPAS_MODE_P2P_GO)
6812                                 return s;
6813                         continue;
6814                 }
6815                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6816                         return s; /* peer is GO in the persistent group */
6817                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6818                         continue;
6819                 for (i = 0; i < s->num_p2p_clients; i++) {
6820                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6821                                       addr, ETH_ALEN) == 0)
6822                                 return s; /* peer is P2P client in persistent
6823                                            * group */
6824                 }
6825         }
6826
6827         return NULL;
6828 }
6829
6830
6831 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6832                                        const u8 *addr)
6833 {
6834         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6835                                  wpa_s->parent, NULL) > 0) {
6836                 /*
6837                  * This can happen if WPS provisioning step is not terminated
6838                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6839                  * peer was able to connect, there is no need to time out group
6840                  * formation after this, though. In addition, this is used with
6841                  * the initial connection wait on the GO as a separate formation
6842                  * timeout and as such, expected to be hit after the initial WPS
6843                  * provisioning step.
6844                  */
6845                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6846         }
6847         if (!wpa_s->p2p_go_group_formation_completed) {
6848                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6849                 wpa_s->p2p_go_group_formation_completed = 1;
6850                 wpa_s->global->p2p_group_formation = NULL;
6851                 wpa_s->p2p_in_provisioning = 0;
6852                 wpa_s->p2p_in_invitation = 0;
6853         }
6854         wpa_s->global->p2p_go_wait_client.sec = 0;
6855         if (addr == NULL)
6856                 return;
6857         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6858 }
6859
6860
6861 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6862                                         int group_added)
6863 {
6864         struct wpa_supplicant *group = wpa_s;
6865         if (wpa_s->global->p2p_group_formation)
6866                 group = wpa_s->global->p2p_group_formation;
6867         wpa_s = wpa_s->parent;
6868         offchannel_send_action_done(wpa_s);
6869         if (group_added)
6870                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6871         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6872         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6873                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6874                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6875                          wpa_s->p2p_persistent_id,
6876                          wpa_s->p2p_pd_before_go_neg,
6877                          wpa_s->p2p_go_ht40,
6878                          wpa_s->p2p_go_vht);
6879 }
6880
6881
6882 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6883 {
6884         if (!wpa_s->p2p_fallback_to_go_neg ||
6885             wpa_s->p2p_in_provisioning <= 5)
6886                 return 0;
6887
6888         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6889                 return 0; /* peer operating as a GO */
6890
6891         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6892                 "fallback to GO Negotiation");
6893         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6894
6895         return 1;
6896 }
6897
6898
6899 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6900 {
6901         struct wpa_supplicant *ifs;
6902
6903         if (wpa_s->wpa_state > WPA_SCANNING) {
6904                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6905                         "concurrent operation",
6906                         wpa_s->conf->p2p_search_delay);
6907                 return wpa_s->conf->p2p_search_delay;
6908         }
6909
6910         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6911                          radio_list) {
6912                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6913                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6914                                 "delay due to concurrent operation on "
6915                                 "interface %s",
6916                                 wpa_s->conf->p2p_search_delay,
6917                                 ifs->ifname);
6918                         return wpa_s->conf->p2p_search_delay;
6919                 }
6920         }
6921
6922         return 0;
6923 }
6924
6925
6926 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6927                                      struct wpa_ssid *s, const u8 *addr,
6928                                      int iface_addr)
6929 {
6930         struct psk_list_entry *psk, *tmp;
6931         int changed = 0;
6932
6933         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6934                               list) {
6935                 if ((iface_addr && !psk->p2p &&
6936                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6937                     (!iface_addr && psk->p2p &&
6938                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6939                         wpa_dbg(wpa_s, MSG_DEBUG,
6940                                 "P2P: Remove persistent group PSK list entry for "
6941                                 MACSTR " p2p=%u",
6942                                 MAC2STR(psk->addr), psk->p2p);
6943                         dl_list_del(&psk->list);
6944                         os_free(psk);
6945                         changed++;
6946                 }
6947         }
6948
6949         return changed;
6950 }
6951
6952
6953 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6954                          const u8 *p2p_dev_addr,
6955                          const u8 *psk, size_t psk_len)
6956 {
6957         struct wpa_ssid *ssid = wpa_s->current_ssid;
6958         struct wpa_ssid *persistent;
6959         struct psk_list_entry *p, *last;
6960
6961         if (psk_len != sizeof(p->psk))
6962                 return;
6963
6964         if (p2p_dev_addr) {
6965                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6966                         " p2p_dev_addr=" MACSTR,
6967                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6968                 if (is_zero_ether_addr(p2p_dev_addr))
6969                         p2p_dev_addr = NULL;
6970         } else {
6971                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6972                         MAC2STR(mac_addr));
6973         }
6974
6975         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6976                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6977                 /* To be added to persistent group once created */
6978                 if (wpa_s->global->add_psk == NULL) {
6979                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6980                         if (wpa_s->global->add_psk == NULL)
6981                                 return;
6982                 }
6983                 p = wpa_s->global->add_psk;
6984                 if (p2p_dev_addr) {
6985                         p->p2p = 1;
6986                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6987                 } else {
6988                         p->p2p = 0;
6989                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6990                 }
6991                 os_memcpy(p->psk, psk, psk_len);
6992                 return;
6993         }
6994
6995         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6996                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6997                 return;
6998         }
6999
7000         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7001                                              ssid->ssid_len);
7002         if (!persistent) {
7003                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7004                 return;
7005         }
7006
7007         p = os_zalloc(sizeof(*p));
7008         if (p == NULL)
7009                 return;
7010         if (p2p_dev_addr) {
7011                 p->p2p = 1;
7012                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7013         } else {
7014                 p->p2p = 0;
7015                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7016         }
7017         os_memcpy(p->psk, psk, psk_len);
7018
7019         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7020             (last = dl_list_last(&persistent->psk_list,
7021                                  struct psk_list_entry, list))) {
7022                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7023                         MACSTR " (p2p=%u) to make room for a new one",
7024                         MAC2STR(last->addr), last->p2p);
7025                 dl_list_del(&last->list);
7026                 os_free(last);
7027         }
7028
7029         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7030                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7031                                   p2p_dev_addr == NULL);
7032         if (p2p_dev_addr) {
7033                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7034                         MACSTR, MAC2STR(p2p_dev_addr));
7035         } else {
7036                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7037                         MAC2STR(mac_addr));
7038         }
7039         dl_list_add(&persistent->psk_list, &p->list);
7040
7041         if (wpa_s->parent->conf->update_config &&
7042             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7043                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7044 }
7045
7046
7047 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7048                                 struct wpa_ssid *s, const u8 *addr,
7049                                 int iface_addr)
7050 {
7051         int res;
7052
7053         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7054         if (res > 0 && wpa_s->conf->update_config &&
7055             wpa_config_write(wpa_s->confname, wpa_s->conf))
7056                 wpa_dbg(wpa_s, MSG_DEBUG,
7057                         "P2P: Failed to update configuration");
7058 }
7059
7060
7061 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7062                                       const u8 *peer, int iface_addr)
7063 {
7064         struct hostapd_data *hapd;
7065         struct hostapd_wpa_psk *psk, *prev, *rem;
7066         struct sta_info *sta;
7067
7068         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7069             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7070                 return;
7071
7072         /* Remove per-station PSK entry */
7073         hapd = wpa_s->ap_iface->bss[0];
7074         prev = NULL;
7075         psk = hapd->conf->ssid.wpa_psk;
7076         while (psk) {
7077                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7078                     (!iface_addr &&
7079                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7080                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7081                                 MACSTR " iface_addr=%d",
7082                                 MAC2STR(peer), iface_addr);
7083                         if (prev)
7084                                 prev->next = psk->next;
7085                         else
7086                                 hapd->conf->ssid.wpa_psk = psk->next;
7087                         rem = psk;
7088                         psk = psk->next;
7089                         os_free(rem);
7090                 } else {
7091                         prev = psk;
7092                         psk = psk->next;
7093                 }
7094         }
7095
7096         /* Disconnect from group */
7097         if (iface_addr)
7098                 sta = ap_get_sta(hapd, peer);
7099         else
7100                 sta = ap_get_sta_p2p(hapd, peer);
7101         if (sta) {
7102                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7103                         " (iface_addr=%d) from group",
7104                         MAC2STR(peer), iface_addr);
7105                 hostapd_drv_sta_deauth(hapd, sta->addr,
7106                                        WLAN_REASON_DEAUTH_LEAVING);
7107                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7108         }
7109 }
7110
7111
7112 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7113                             int iface_addr)
7114 {
7115         struct wpa_ssid *s;
7116         struct wpa_supplicant *w;
7117
7118         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7119
7120         /* Remove from any persistent group */
7121         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
7122                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7123                         continue;
7124                 if (!iface_addr)
7125                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
7126                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
7127         }
7128
7129         /* Remove from any operating group */
7130         for (w = wpa_s->global->ifaces; w; w = w->next)
7131                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7132 }
7133
7134
7135 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7136 {
7137         struct wpa_supplicant *wpa_s = eloop_ctx;
7138         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7139 }
7140
7141
7142 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7143 {
7144         struct wpa_supplicant *wpa_s = eloop_ctx;
7145
7146         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7147         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7148 }
7149
7150
7151 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7152                                         struct wpa_ssid *ssid)
7153 {
7154         struct wpa_supplicant *iface;
7155
7156         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7157                 if (!iface->current_ssid ||
7158                     iface->current_ssid->frequency == freq ||
7159                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7160                      !iface->current_ssid->p2p_group))
7161                         continue;
7162
7163                 /* Remove the connection with least priority */
7164                 if (!wpas_is_p2p_prioritized(iface)) {
7165                         /* STA connection has priority over existing
7166                          * P2P connection, so remove the interface. */
7167                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7168                         eloop_register_timeout(0, 0,
7169                                                wpas_p2p_group_freq_conflict,
7170                                                iface, NULL);
7171                         /* If connection in progress is P2P connection, do not
7172                          * proceed for the connection. */
7173                         if (wpa_s == iface)
7174                                 return -1;
7175                         else
7176                                 return 0;
7177                 } else {
7178                         /* P2P connection has priority, disable the STA network
7179                          */
7180                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7181                                                        ssid);
7182                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7183                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7184                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7185                                   ETH_ALEN);
7186                         /* If P2P connection is in progress, continue
7187                          * connecting...*/
7188                         if (wpa_s == iface)
7189                                 return 0;
7190                         else
7191                                 return -1;
7192                 }
7193         }
7194
7195         return 0;
7196 }
7197
7198
7199 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7200 {
7201         struct wpa_ssid *ssid = wpa_s->current_ssid;
7202
7203         if (ssid == NULL || !ssid->p2p_group)
7204                 return 0;
7205
7206         if (wpa_s->p2p_last_4way_hs_fail &&
7207             wpa_s->p2p_last_4way_hs_fail == ssid) {
7208                 u8 go_dev_addr[ETH_ALEN];
7209                 struct wpa_ssid *persistent;
7210
7211                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7212                                               ssid->ssid,
7213                                               ssid->ssid_len) <= 0) {
7214                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7215                         goto disconnect;
7216                 }
7217
7218                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7219                         MACSTR, MAC2STR(go_dev_addr));
7220                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7221                                                      ssid->ssid,
7222                                                      ssid->ssid_len);
7223                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7224                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7225                         goto disconnect;
7226                 }
7227                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7228                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7229                                persistent->id);
7230         disconnect:
7231                 wpa_s->p2p_last_4way_hs_fail = NULL;
7232                 /*
7233                  * Remove the group from a timeout to avoid issues with caller
7234                  * continuing to use the interface if this is on a P2P group
7235                  * interface.
7236                  */
7237                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7238                                        wpa_s, NULL);
7239                 return 1;
7240         }
7241
7242         wpa_s->p2p_last_4way_hs_fail = ssid;
7243         return 0;
7244 }
7245
7246
7247 #ifdef CONFIG_WPS_NFC
7248
7249 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7250                                              struct wpabuf *p2p)
7251 {
7252         struct wpabuf *ret;
7253         size_t wsc_len;
7254
7255         if (p2p == NULL) {
7256                 wpabuf_free(wsc);
7257                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7258                 return NULL;
7259         }
7260
7261         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7262         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7263         if (ret == NULL) {
7264                 wpabuf_free(wsc);
7265                 wpabuf_free(p2p);
7266                 return NULL;
7267         }
7268
7269         wpabuf_put_be16(ret, wsc_len);
7270         if (wsc)
7271                 wpabuf_put_buf(ret, wsc);
7272         wpabuf_put_be16(ret, wpabuf_len(p2p));
7273         wpabuf_put_buf(ret, p2p);
7274
7275         wpabuf_free(wsc);
7276         wpabuf_free(p2p);
7277         wpa_hexdump_buf(MSG_DEBUG,
7278                         "P2P: Generated NFC connection handover message", ret);
7279
7280         if (ndef && ret) {
7281                 struct wpabuf *tmp;
7282                 tmp = ndef_build_p2p(ret);
7283                 wpabuf_free(ret);
7284                 if (tmp == NULL) {
7285                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7286                         return NULL;
7287                 }
7288                 ret = tmp;
7289         }
7290
7291         return ret;
7292 }
7293
7294
7295 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7296                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7297 {
7298         struct wpa_supplicant *iface;
7299
7300         if (go_dev_addr)
7301                 os_memset(go_dev_addr, 0, ETH_ALEN);
7302         if (ssid)
7303                 *ssid = NULL;
7304         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7305                 if (iface->wpa_state < WPA_ASSOCIATING ||
7306                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7307                     !iface->current_ssid->p2p_group ||
7308                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7309                         continue;
7310                 if (ssid)
7311                         *ssid = iface->current_ssid;
7312                 if (go_dev_addr)
7313                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7314                 return iface->assoc_freq;
7315         }
7316         return 0;
7317 }
7318
7319
7320 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7321                                           int ndef)
7322 {
7323         struct wpabuf *wsc, *p2p;
7324         struct wpa_ssid *ssid;
7325         u8 go_dev_addr[ETH_ALEN];
7326         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7327
7328         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7329                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7330                 return NULL;
7331         }
7332
7333         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7334             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7335                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7336                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7337                 return NULL;
7338         }
7339
7340         if (cli_freq == 0) {
7341                 wsc = wps_build_nfc_handover_req_p2p(
7342                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7343         } else
7344                 wsc = NULL;
7345         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7346                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7347                                          ssid ? ssid->ssid_len : 0);
7348
7349         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7350 }
7351
7352
7353 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7354                                           int ndef, int tag)
7355 {
7356         struct wpabuf *wsc, *p2p;
7357         struct wpa_ssid *ssid;
7358         u8 go_dev_addr[ETH_ALEN];
7359         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7360
7361         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7362                 return NULL;
7363
7364         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7365             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7366                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7367                 return NULL;
7368
7369         if (cli_freq == 0) {
7370                 wsc = wps_build_nfc_handover_sel_p2p(
7371                         wpa_s->parent->wps,
7372                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7373                         DEV_PW_NFC_CONNECTION_HANDOVER,
7374                         wpa_s->conf->wps_nfc_dh_pubkey,
7375                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7376         } else
7377                 wsc = NULL;
7378         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7379                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7380                                          ssid ? ssid->ssid_len : 0);
7381
7382         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7383 }
7384
7385
7386 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7387                                    struct p2p_nfc_params *params)
7388 {
7389         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7390                    "connection handover (freq=%d)",
7391                    params->go_freq);
7392
7393         if (params->go_freq && params->go_ssid_len) {
7394                 wpa_s->p2p_wps_method = WPS_NFC;
7395                 wpa_s->pending_join_wps_method = WPS_NFC;
7396                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7397                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7398                           ETH_ALEN);
7399                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7400                                            params->go_ssid,
7401                                            params->go_ssid_len);
7402         }
7403
7404         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7405                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7406                                 params->go_freq, -1, 0, 1, 1);
7407 }
7408
7409
7410 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7411                                   struct p2p_nfc_params *params, int tag)
7412 {
7413         int res, persistent;
7414         struct wpa_ssid *ssid;
7415
7416         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7417                    "connection handover");
7418         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7419                 ssid = wpa_s->current_ssid;
7420                 if (ssid == NULL)
7421                         continue;
7422                 if (ssid->mode != WPAS_MODE_P2P_GO)
7423                         continue;
7424                 if (wpa_s->ap_iface == NULL)
7425                         continue;
7426                 break;
7427         }
7428         if (wpa_s == NULL) {
7429                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7430                 return -1;
7431         }
7432
7433         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7434             DEV_PW_NFC_CONNECTION_HANDOVER &&
7435             !wpa_s->parent->p2p_oob_dev_pw) {
7436                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7437                 return -1;
7438         }
7439         res = wpas_ap_wps_add_nfc_pw(
7440                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7441                 wpa_s->parent->p2p_oob_dev_pw,
7442                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7443                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7444         if (res)
7445                 return res;
7446
7447         if (!tag) {
7448                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7449                 return 0;
7450         }
7451
7452         if (!params->peer ||
7453             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7454                 return 0;
7455
7456         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7457                    " to join", MAC2STR(params->peer->p2p_device_addr));
7458
7459         wpa_s->global->p2p_invite_group = wpa_s;
7460         persistent = ssid->p2p_persistent_group &&
7461                 wpas_p2p_get_persistent(wpa_s->parent,
7462                                         params->peer->p2p_device_addr,
7463                                         ssid->ssid, ssid->ssid_len);
7464         wpa_s->parent->pending_invite_ssid_id = -1;
7465
7466         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7467                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7468                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7469                           wpa_s->global->p2p_dev_addr, persistent, 0,
7470                           wpa_s->parent->p2p_oob_dev_pw_id);
7471 }
7472
7473
7474 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7475                                     struct p2p_nfc_params *params,
7476                                     int forced_freq)
7477 {
7478         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7479                    "connection handover");
7480         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7481                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7482                                 forced_freq, -1, 0, 1, 1);
7483 }
7484
7485
7486 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7487                                     struct p2p_nfc_params *params,
7488                                     int forced_freq)
7489 {
7490         int res;
7491
7492         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7493                    "connection handover");
7494         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7495                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7496                                forced_freq, -1, 0, 1, 1);
7497         if (res)
7498                 return res;
7499
7500         res = wpas_p2p_listen(wpa_s, 60);
7501         if (res) {
7502                 p2p_unauthorize(wpa_s->global->p2p,
7503                                 params->peer->p2p_device_addr);
7504         }
7505
7506         return res;
7507 }
7508
7509
7510 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7511                                             const struct wpabuf *data,
7512                                             int sel, int tag, int forced_freq)
7513 {
7514         const u8 *pos, *end;
7515         u16 len, id;
7516         struct p2p_nfc_params params;
7517         int res;
7518
7519         os_memset(&params, 0, sizeof(params));
7520         params.sel = sel;
7521
7522         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7523
7524         pos = wpabuf_head(data);
7525         end = pos + wpabuf_len(data);
7526
7527         if (end - pos < 2) {
7528                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7529                            "attributes");
7530                 return -1;
7531         }
7532         len = WPA_GET_BE16(pos);
7533         pos += 2;
7534         if (pos + len > end) {
7535                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7536                            "attributes");
7537                 return -1;
7538         }
7539         params.wsc_attr = pos;
7540         params.wsc_len = len;
7541         pos += len;
7542
7543         if (end - pos < 2) {
7544                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7545                            "attributes");
7546                 return -1;
7547         }
7548         len = WPA_GET_BE16(pos);
7549         pos += 2;
7550         if (pos + len > end) {
7551                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7552                            "attributes");
7553                 return -1;
7554         }
7555         params.p2p_attr = pos;
7556         params.p2p_len = len;
7557         pos += len;
7558
7559         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7560                     params.wsc_attr, params.wsc_len);
7561         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7562                     params.p2p_attr, params.p2p_len);
7563         if (pos < end) {
7564                 wpa_hexdump(MSG_DEBUG,
7565                             "P2P: Ignored extra data after P2P attributes",
7566                             pos, end - pos);
7567         }
7568
7569         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7570         if (res)
7571                 return res;
7572
7573         if (params.next_step == NO_ACTION)
7574                 return 0;
7575
7576         if (params.next_step == BOTH_GO) {
7577                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7578                         MAC2STR(params.peer->p2p_device_addr));
7579                 return 0;
7580         }
7581
7582         if (params.next_step == PEER_CLIENT) {
7583                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7584                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7585                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7586                                 " ssid=\"%s\"",
7587                                 MAC2STR(params.peer->p2p_device_addr),
7588                                 params.go_freq,
7589                                 MAC2STR(params.go_dev_addr),
7590                                 wpa_ssid_txt(params.go_ssid,
7591                                              params.go_ssid_len));
7592                 } else {
7593                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7594                                 "peer=" MACSTR " freq=%d",
7595                                 MAC2STR(params.peer->p2p_device_addr),
7596                                 params.go_freq);
7597                 }
7598                 return 0;
7599         }
7600
7601         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7602                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7603                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7604                 return 0;
7605         }
7606
7607         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7608         wpa_s->p2p_oob_dev_pw = NULL;
7609
7610         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7611                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7612                            "received");
7613                 return -1;
7614         }
7615
7616         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7617         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7618         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7619                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7620         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7621                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7622         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7623
7624         if (tag) {
7625                 if (id < 0x10) {
7626                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7627                                    "peer OOB Device Password Id %u", id);
7628                         return -1;
7629                 }
7630                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7631                            "Device Password Id %u", id);
7632                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7633                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7634                                 params.oob_dev_pw_len -
7635                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7636                 wpa_s->p2p_oob_dev_pw_id = id;
7637                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7638                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7639                         params.oob_dev_pw_len -
7640                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7641                 if (wpa_s->p2p_oob_dev_pw == NULL)
7642                         return -1;
7643
7644                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7645                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7646                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7647                         return -1;
7648         } else {
7649                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7650                            "without Device Password");
7651                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7652         }
7653
7654         switch (params.next_step) {
7655         case NO_ACTION:
7656         case BOTH_GO:
7657         case PEER_CLIENT:
7658                 /* already covered above */
7659                 return 0;
7660         case JOIN_GROUP:
7661                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7662         case AUTH_JOIN:
7663                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7664         case INIT_GO_NEG:
7665                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7666         case RESP_GO_NEG:
7667                 /* TODO: use own OOB Dev Pw */
7668                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7669         }
7670
7671         return -1;
7672 }
7673
7674
7675 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7676                              const struct wpabuf *data, int forced_freq)
7677 {
7678         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7679                 return -1;
7680
7681         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7682 }
7683
7684
7685 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7686                                  const struct wpabuf *req,
7687                                  const struct wpabuf *sel, int forced_freq)
7688 {
7689         struct wpabuf *tmp;
7690         int ret;
7691
7692         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7693                 return -1;
7694
7695         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7696
7697         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7698                           wpabuf_head(req), wpabuf_len(req));
7699         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7700                           wpabuf_head(sel), wpabuf_len(sel));
7701         if (forced_freq)
7702                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7703         tmp = ndef_parse_p2p(init ? sel : req);
7704         if (tmp == NULL) {
7705                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7706                 return -1;
7707         }
7708
7709         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7710                                                forced_freq);
7711         wpabuf_free(tmp);
7712
7713         return ret;
7714 }
7715
7716
7717 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7718 {
7719         const u8 *if_addr;
7720         int go_intent = wpa_s->conf->p2p_go_intent;
7721         struct wpa_supplicant *iface;
7722
7723         if (wpa_s->global->p2p == NULL)
7724                 return -1;
7725
7726         if (!enabled) {
7727                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7728                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7729                 {
7730                         if (!iface->ap_iface)
7731                                 continue;
7732                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7733                 }
7734                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7735                                                  0, NULL);
7736                 if (wpa_s->p2p_nfc_tag_enabled)
7737                         wpas_p2p_remove_pending_group_interface(wpa_s);
7738                 wpa_s->p2p_nfc_tag_enabled = 0;
7739                 return 0;
7740         }
7741
7742         if (wpa_s->global->p2p_disabled)
7743                 return -1;
7744
7745         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7746             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7747             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7748             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7749                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7750                            "to allow static handover cases");
7751                 return -1;
7752         }
7753
7754         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7755
7756         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7757         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7758         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7759         if (wpa_s->p2p_oob_dev_pw == NULL)
7760                 return -1;
7761         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7762
7763         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7764             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7765                 /*
7766                  * P2P Group Interface present and the command came on group
7767                  * interface, so enable the token for the current interface.
7768                  */
7769                 wpa_s->create_p2p_iface = 0;
7770         } else {
7771                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7772         }
7773
7774         if (wpa_s->create_p2p_iface) {
7775                 enum wpa_driver_if_type iftype;
7776                 /* Prepare to add a new interface for the group */
7777                 iftype = WPA_IF_P2P_GROUP;
7778                 if (go_intent == 15)
7779                         iftype = WPA_IF_P2P_GO;
7780                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7781                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7782                                    "interface for the group");
7783                         return -1;
7784                 }
7785
7786                 if_addr = wpa_s->pending_interface_addr;
7787         } else
7788                 if_addr = wpa_s->own_addr;
7789
7790         wpa_s->p2p_nfc_tag_enabled = enabled;
7791
7792         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7793                 struct hostapd_data *hapd;
7794                 if (iface->ap_iface == NULL)
7795                         continue;
7796                 hapd = iface->ap_iface->bss[0];
7797                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7798                 hapd->conf->wps_nfc_dh_pubkey =
7799                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7800                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7801                 hapd->conf->wps_nfc_dh_privkey =
7802                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7803                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7804                 hapd->conf->wps_nfc_dev_pw =
7805                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7806                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7807
7808                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7809                         wpa_dbg(iface, MSG_DEBUG,
7810                                 "P2P: Failed to enable NFC Tag for GO");
7811                 }
7812         }
7813         p2p_set_authorized_oob_dev_pw_id(
7814                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7815                 if_addr);
7816
7817         return 0;
7818 }
7819
7820 #endif /* CONFIG_WPS_NFC */
7821
7822
7823 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
7824                                              struct wpa_used_freq_data *freqs,
7825                                              unsigned int num)
7826 {
7827         u8 curr_chan, cand, chan;
7828         unsigned int i;
7829
7830         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
7831         for (i = 0, cand = 0; i < num; i++) {
7832                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
7833                 if (curr_chan == chan) {
7834                         cand = 0;
7835                         break;
7836                 }
7837
7838                 if (chan == 1 || chan == 6 || chan == 11)
7839                         cand = chan;
7840         }
7841
7842         if (cand) {
7843                 wpa_dbg(wpa_s, MSG_DEBUG,
7844                         "P2P: Update Listen channel to %u baased on operating channel",
7845                         cand);
7846                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
7847         }
7848 }
7849
7850
7851 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
7852 {
7853         struct wpa_used_freq_data *freqs;
7854         unsigned int num = wpa_s->num_multichan_concurrent;
7855
7856         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7857                 return;
7858
7859         /*
7860          * If possible, optimize the Listen channel to be a channel that is
7861          * already used by one of the other interfaces.
7862          */
7863         if (!wpa_s->conf->p2p_optimize_listen_chan)
7864                 return;
7865
7866         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
7867                 return;
7868
7869         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7870         if (!freqs)
7871                 return;
7872
7873         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7874
7875         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7876         os_free(freqs);
7877 }
7878
7879
7880 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
7881 {
7882         if (wpa_s == wpa_s->parent)
7883                 wpas_p2p_group_remove(wpa_s, "*");
7884         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
7885                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
7886                         "the management interface is being removed");
7887                 wpas_p2p_deinit_global(wpa_s->global);
7888         }
7889 }
7890
7891
7892 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
7893 {
7894         if (wpa_s->ap_iface->bss)
7895                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
7896         wpas_p2p_group_deinit(wpa_s);
7897 }