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