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 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  86 #define P2P_CONCURRENT_SEARCH_DELAY 500
  87 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  88
  89 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  90
  91 enum p2p_group_removal_reason {
  92         P2P_GROUP_REMOVAL_UNKNOWN,
  93         P2P_GROUP_REMOVAL_SILENT,
  94         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  95         P2P_GROUP_REMOVAL_REQUESTED,
  96         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  97         P2P_GROUP_REMOVAL_UNAVAILABLE,
  98         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  99         P2P_GROUP_REMOVAL_PSK_FAILURE,
 100         P2P_GROUP_REMOVAL_FREQ_CONFLICT
 101 };
 102
 103
 104 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 105 static struct wpa_supplicant *
 106 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 107                          int go);
 108 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 109                                const u8 *ssid, size_t ssid_len);
 110 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 111                                    const u8 *ssid, size_t ssid_len);
 112 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 113 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 114                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 115                          int auto_join, int freq,
 116                          const u8 *ssid, size_t ssid_len);
 117 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 119 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 120 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 121 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 122                                              void *timeout_ctx);
 123 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 124 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 125                                         int group_added);
 126 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 127 static void wpas_stop_listen(void *ctx);
 128
 129
 130 /*
 131  * Get the number of concurrent channels that the HW can operate, but that are
 132  * currently not in use by any of the wpa_supplicant interfaces.
 133  */
 134 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 135 {
 136         int *freqs;
 137         int num, unused;
 138
 139         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 140         if (!freqs)
 141                 return -1;
 142
 143         num = get_shared_radio_freqs(wpa_s, freqs,
 144                                      wpa_s->num_multichan_concurrent);
 145         os_free(freqs);
 146
 147         unused = wpa_s->num_multichan_concurrent - num;
 148         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 149         return unused;
 150 }
 151
 152
 153 /*
 154  * Get the frequencies that are currently in use by one or more of the virtual
 155  * interfaces, and that are also valid for P2P operation.
 156  */
 157 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 158                                      int *p2p_freqs, unsigned int len)
 159 {
 160         int *freqs;
 161         unsigned int num, i, j;
 162
 163         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 164         if (!freqs)
 165                 return -1;
 166
 167         num = get_shared_radio_freqs(wpa_s, freqs,
 168                                      wpa_s->num_multichan_concurrent);
 169
 170         os_memset(p2p_freqs, 0, sizeof(int) * len);
 171
 172         for (i = 0, j = 0; i < num && j < len; i++) {
 173                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 174                         p2p_freqs[j++] = freqs[i];
 175         }
 176
 177         os_free(freqs);
 178
 179         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 180
 181         return j;
 182 }
 183
 184
 185 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 186                                              int freq)
 187 {
 188         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 189                 return;
 190         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 191             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 192             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 193                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 194                            freq);
 195                 freq = 0;
 196         }
 197         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 198 }
 199
 200
 201 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 202                                       struct wpa_scan_results *scan_res)
 203 {
 204         size_t i;
 205
 206         if (wpa_s->p2p_scan_work) {
 207                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 208                 wpa_s->p2p_scan_work = NULL;
 209                 radio_work_done(work);
 210         }
 211
 212         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 213                 return;
 214
 215         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 216                    (int) scan_res->num);
 217
 218         for (i = 0; i < scan_res->num; i++) {
 219                 struct wpa_scan_res *bss = scan_res->res[i];
 220                 struct os_reltime time_tmp_age, entry_ts;
 221                 const u8 *ies;
 222                 size_t ies_len;
 223
 224                 time_tmp_age.sec = bss->age / 1000;
 225                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 226                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 227
 228                 ies = (const u8 *) (bss + 1);
 229                 ies_len = bss->ie_len;
 230                 if (bss->beacon_ie_len > 0 &&
 231                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 232                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 233                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 234                                    MACSTR, MAC2STR(bss->bssid));
 235                         ies = ies + ies_len;
 236                         ies_len = bss->beacon_ie_len;
 237                 }
 238
 239
 240                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 241                                          bss->freq, &entry_ts, bss->level,
 242                                          ies, ies_len) > 0)
 243                         break;
 244         }
 245
 246         p2p_scan_res_handled(wpa_s->global->p2p);
 247 }
 248
 249
 250 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 251 {
 252         struct wpa_supplicant *wpa_s = work->wpa_s;
 253         struct wpa_driver_scan_params *params = work->ctx;
 254         int ret;
 255
 256         if (deinit) {
 257                 if (!work->started) {
 258                         wpa_scan_free_params(params);
 259                         return;
 260                 }
 261
 262                 wpa_s->p2p_scan_work = NULL;
 263                 return;
 264         }
 265
 266         ret = wpa_drv_scan(wpa_s, params);
 267         wpa_scan_free_params(params);
 268         work->ctx = NULL;
 269         if (ret) {
 270                 radio_work_done(work);
 271                 return;
 272         }
 273
 274         os_get_reltime(&wpa_s->scan_trigger_time);
 275         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 276         wpa_s->own_scan_requested = 1;
 277         wpa_s->p2p_scan_work = work;
 278 }
 279
 280
 281 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 282                          unsigned int num_req_dev_types,
 283                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 284 {
 285         struct wpa_supplicant *wpa_s = ctx;
 286         struct wpa_driver_scan_params *params = NULL;
 287         struct wpabuf *wps_ie, *ies;
 288         size_t ielen;
 289         u8 *n;
 290
 291         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 292                 return -1;
 293
 294         if (wpa_s->p2p_scan_work) {
 295                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 296                 return -1;
 297         }
 298
 299         params = os_zalloc(sizeof(*params));
 300         if (params == NULL)
 301                 return -1;
 302
 303         /* P2P Wildcard SSID */
 304         params->num_ssids = 1;
 305         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 306         if (n == NULL)
 307                 goto fail;
 308         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 309         params->ssids[0].ssid = n;
 310         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 311
 312         wpa_s->wps->dev.p2p = 1;
 313         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 314                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 315                                         num_req_dev_types, req_dev_types);
 316         if (wps_ie == NULL)
 317                 goto fail;
 318
 319         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 320         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 321         if (ies == NULL) {
 322                 wpabuf_free(wps_ie);
 323                 goto fail;
 324         }
 325         wpabuf_put_buf(ies, wps_ie);
 326         wpabuf_free(wps_ie);
 327
 328         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 329
 330         params->p2p_probe = 1;
 331         n = os_malloc(wpabuf_len(ies));
 332         if (n == NULL) {
 333                 wpabuf_free(ies);
 334                 goto fail;
 335         }
 336         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 337         params->extra_ies = n;
 338         params->extra_ies_len = wpabuf_len(ies);
 339         wpabuf_free(ies);
 340
 341         switch (type) {
 342         case P2P_SCAN_SOCIAL:
 343                 params->freqs = os_malloc(4 * sizeof(int));
 344                 if (params->freqs == NULL)
 345                         goto fail;
 346                 params->freqs[0] = 2412;
 347                 params->freqs[1] = 2437;
 348                 params->freqs[2] = 2462;
 349                 params->freqs[3] = 0;
 350                 break;
 351         case P2P_SCAN_FULL:
 352                 break;
 353         case P2P_SCAN_SOCIAL_PLUS_ONE:
 354                 params->freqs = os_malloc(5 * sizeof(int));
 355                 if (params->freqs == NULL)
 356                         goto fail;
 357                 params->freqs[0] = 2412;
 358                 params->freqs[1] = 2437;
 359                 params->freqs[2] = 2462;
 360                 params->freqs[3] = freq;
 361                 params->freqs[4] = 0;
 362                 break;
 363         }
 364
 365         radio_remove_works(wpa_s, "p2p-scan", 0);
 366         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 367                            params) < 0)
 368                 goto fail;
 369         return 0;
 370
 371 fail:
 372         wpa_scan_free_params(params);
 373         return -1;
 374 }
 375
 376
 377 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 378 {
 379         switch (p2p_group_interface) {
 380         case P2P_GROUP_INTERFACE_PENDING:
 381                 return WPA_IF_P2P_GROUP;
 382         case P2P_GROUP_INTERFACE_GO:
 383                 return WPA_IF_P2P_GO;
 384         case P2P_GROUP_INTERFACE_CLIENT:
 385                 return WPA_IF_P2P_CLIENT;
 386         }
 387
 388         return WPA_IF_P2P_GROUP;
 389 }
 390
 391
 392 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 393                                                   const u8 *ssid,
 394                                                   size_t ssid_len, int *go)
 395 {
 396         struct wpa_ssid *s;
 397
 398         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 399                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 400                         if (s->disabled != 0 || !s->p2p_group ||
 401                             s->ssid_len != ssid_len ||
 402                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 403                                 continue;
 404                         if (s->mode == WPAS_MODE_P2P_GO &&
 405                             s != wpa_s->current_ssid)
 406                                 continue;
 407                         if (go)
 408                                 *go = s->mode == WPAS_MODE_P2P_GO;
 409                         return wpa_s;
 410                 }
 411         }
 412
 413         return NULL;
 414 }
 415
 416
 417 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 418                                  enum p2p_group_removal_reason removal_reason)
 419 {
 420         struct wpa_ssid *ssid;
 421         char *gtype;
 422         const char *reason;
 423
 424         ssid = wpa_s->current_ssid;
 425         if (ssid == NULL) {
 426                 /*
 427                  * The current SSID was not known, but there may still be a
 428                  * pending P2P group interface waiting for provisioning or a
 429                  * P2P group that is trying to reconnect.
 430                  */
 431                 ssid = wpa_s->conf->ssid;
 432                 while (ssid) {
 433                         if (ssid->p2p_group && ssid->disabled != 2)
 434                                 break;
 435                         ssid = ssid->next;
 436                 }
 437                 if (ssid == NULL &&
 438                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 439                 {
 440                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 441                                    "not found");
 442                         return -1;
 443                 }
 444         }
 445         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 446                 gtype = "GO";
 447         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 448                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 449                 wpa_s->reassociate = 0;
 450                 wpa_s->disconnected = 1;
 451                 wpa_supplicant_deauthenticate(wpa_s,
 452                                               WLAN_REASON_DEAUTH_LEAVING);
 453                 gtype = "client";
 454         } else
 455                 gtype = "GO";
 456         if (wpa_s->cross_connect_in_use) {
 457                 wpa_s->cross_connect_in_use = 0;
 458                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 459                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 460                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 461         }
 462         switch (removal_reason) {
 463         case P2P_GROUP_REMOVAL_REQUESTED:
 464                 reason = " reason=REQUESTED";
 465                 break;
 466         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 467                 reason = " reason=FORMATION_FAILED";
 468                 break;
 469         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 470                 reason = " reason=IDLE";
 471                 break;
 472         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 473                 reason = " reason=UNAVAILABLE";
 474                 break;
 475         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 476                 reason = " reason=GO_ENDING_SESSION";
 477                 break;
 478         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 479                 reason = " reason=PSK_FAILURE";
 480                 break;
 481         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 482                 reason = " reason=FREQ_CONFLICT";
 483                 break;
 484         default:
 485                 reason = "";
 486                 break;
 487         }
 488         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 489                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 490                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 491                                wpa_s->ifname, gtype, reason);
 492         }
 493
 494         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 495                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 496         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 497                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 498         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 499                                  wpa_s->parent, NULL) > 0) {
 500                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 501                            "timeout");
 502                 wpa_s->p2p_in_provisioning = 0;
 503         }
 504
 505         wpa_s->p2p_in_invitation = 0;
 506
 507         /*
 508          * Make sure wait for the first client does not remain active after the
 509          * group has been removed.
 510          */
 511         wpa_s->global->p2p_go_wait_client.sec = 0;
 512
 513         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 514                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 515
 516         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 517                 struct wpa_global *global;
 518                 char *ifname;
 519                 enum wpa_driver_if_type type;
 520                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 521                         wpa_s->ifname);
 522                 global = wpa_s->global;
 523                 ifname = os_strdup(wpa_s->ifname);
 524                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 525                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 526                 wpa_s = global->ifaces;
 527                 if (wpa_s && ifname)
 528                         wpa_drv_if_remove(wpa_s, type, ifname);
 529                 os_free(ifname);
 530                 return 1;
 531         }
 532
 533         if (!wpa_s->p2p_go_group_formation_completed) {
 534                 wpa_s->global->p2p_group_formation = NULL;
 535                 wpa_s->p2p_in_provisioning = 0;
 536         }
 537
 538         wpa_s->show_group_started = 0;
 539         os_free(wpa_s->go_params);
 540         wpa_s->go_params = NULL;
 541
 542         wpa_s->waiting_presence_resp = 0;
 543
 544         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 545         if (ssid && (ssid->p2p_group ||
 546                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 547                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 548                 int id = ssid->id;
 549                 if (ssid == wpa_s->current_ssid) {
 550                         wpa_sm_set_config(wpa_s->wpa, NULL);
 551                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 552                         wpa_s->current_ssid = NULL;
 553                 }
 554                 /*
 555                  * Networks objects created during any P2P activities are not
 556                  * exposed out as they might/will confuse certain non-P2P aware
 557                  * applications since these network objects won't behave like
 558                  * regular ones.
 559                  *
 560                  * Likewise, we don't send out network removed signals for such
 561                  * network objects.
 562                  */
 563                 wpa_config_remove_network(wpa_s->conf, id);
 564                 wpa_supplicant_clear_status(wpa_s);
 565                 wpa_supplicant_cancel_sched_scan(wpa_s);
 566         } else {
 567                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 568                            "found");
 569         }
 570         if (wpa_s->ap_iface)
 571                 wpa_supplicant_ap_deinit(wpa_s);
 572         else
 573                 wpa_drv_deinit_p2p_cli(wpa_s);
 574
 575         return 0;
 576 }
 577
 578
 579 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 580                                      u8 *go_dev_addr,
 581                                      const u8 *ssid, size_t ssid_len)
 582 {
 583         struct wpa_bss *bss;
 584         const u8 *bssid;
 585         struct wpabuf *p2p;
 586         u8 group_capab;
 587         const u8 *addr;
 588
 589         if (wpa_s->go_params)
 590                 bssid = wpa_s->go_params->peer_interface_addr;
 591         else
 592                 bssid = wpa_s->bssid;
 593
 594         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 595         if (bss == NULL && wpa_s->go_params &&
 596             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 597                 bss = wpa_bss_get_p2p_dev_addr(
 598                         wpa_s, wpa_s->go_params->peer_device_addr);
 599         if (bss == NULL) {
 600                 u8 iface_addr[ETH_ALEN];
 601                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 602                                            iface_addr) == 0)
 603                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 604         }
 605         if (bss == NULL) {
 606                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 607                            "group is persistent - BSS " MACSTR " not found",
 608                            MAC2STR(bssid));
 609                 return 0;
 610         }
 611
 612         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 613         if (p2p == NULL)
 614                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 615                                                          P2P_IE_VENDOR_TYPE);
 616         if (p2p == NULL) {
 617                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 618                            "group is persistent - BSS " MACSTR
 619                            " did not include P2P IE", MAC2STR(bssid));
 620                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 621                             (u8 *) (bss + 1), bss->ie_len);
 622                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 623                             ((u8 *) bss + 1) + bss->ie_len,
 624                             bss->beacon_ie_len);
 625                 return 0;
 626         }
 627
 628         group_capab = p2p_get_group_capab(p2p);
 629         addr = p2p_get_go_dev_addr(p2p);
 630         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 631                    "group_capab=0x%x", group_capab);
 632         if (addr) {
 633                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 634                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 635                            MAC2STR(addr));
 636         } else
 637                 os_memset(go_dev_addr, 0, ETH_ALEN);
 638         wpabuf_free(p2p);
 639
 640         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 641                    "go_dev_addr=" MACSTR,
 642                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 643
 644         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 645 }
 646
 647
 648 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 649                                            struct wpa_ssid *ssid,
 650                                            const u8 *go_dev_addr)
 651 {
 652         struct wpa_ssid *s;
 653         int changed = 0;
 654
 655         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 656                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 657         for (s = wpa_s->conf->ssid; s; s = s->next) {
 658                 if (s->disabled == 2 &&
 659                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 660                     s->ssid_len == ssid->ssid_len &&
 661                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 662                         break;
 663         }
 664
 665         if (s) {
 666                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 667                            "entry");
 668                 if (ssid->passphrase && !s->passphrase)
 669                         changed = 1;
 670                 else if (ssid->passphrase && s->passphrase &&
 671                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 672                         changed = 1;
 673         } else {
 674                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 675                            "entry");
 676                 changed = 1;
 677                 s = wpa_config_add_network(wpa_s->conf);
 678                 if (s == NULL)
 679                         return -1;
 680
 681                 /*
 682                  * Instead of network_added we emit persistent_group_added
 683                  * notification. Also to keep the defense checks in
 684                  * persistent_group obj registration method, we set the
 685                  * relevant flags in s to designate it as a persistent group.
 686                  */
 687                 s->p2p_group = 1;
 688                 s->p2p_persistent_group = 1;
 689                 wpas_notify_persistent_group_added(wpa_s, s);
 690                 wpa_config_set_network_defaults(s);
 691         }
 692
 693         s->p2p_group = 1;
 694         s->p2p_persistent_group = 1;
 695         s->disabled = 2;
 696         s->bssid_set = 1;
 697         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 698         s->mode = ssid->mode;
 699         s->auth_alg = WPA_AUTH_ALG_OPEN;
 700         s->key_mgmt = WPA_KEY_MGMT_PSK;
 701         s->proto = WPA_PROTO_RSN;
 702         s->pairwise_cipher = WPA_CIPHER_CCMP;
 703         s->export_keys = 1;
 704         if (ssid->passphrase) {
 705                 os_free(s->passphrase);
 706                 s->passphrase = os_strdup(ssid->passphrase);
 707         }
 708         if (ssid->psk_set) {
 709                 s->psk_set = 1;
 710                 os_memcpy(s->psk, ssid->psk, 32);
 711         }
 712         if (s->passphrase && !s->psk_set)
 713                 wpa_config_update_psk(s);
 714         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 715                 os_free(s->ssid);
 716                 s->ssid = os_malloc(ssid->ssid_len);
 717         }
 718         if (s->ssid) {
 719                 s->ssid_len = ssid->ssid_len;
 720                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 721         }
 722         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 723                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 724                 wpa_s->global->add_psk = NULL;
 725                 changed = 1;
 726         }
 727
 728         if (changed && wpa_s->conf->update_config &&
 729             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 730                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 731         }
 732
 733         return s->id;
 734 }
 735
 736
 737 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 738                                                  const u8 *addr)
 739 {
 740         struct wpa_ssid *ssid, *s;
 741         u8 *n;
 742         size_t i;
 743         int found = 0;
 744
 745         ssid = wpa_s->current_ssid;
 746         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 747             !ssid->p2p_persistent_group)
 748                 return;
 749
 750         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 751                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 752                         continue;
 753
 754                 if (s->ssid_len == ssid->ssid_len &&
 755                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 756                         break;
 757         }
 758
 759         if (s == NULL)
 760                 return;
 761
 762         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 763                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 764                               ETH_ALEN) != 0)
 765                         continue;
 766
 767                 if (i == s->num_p2p_clients - 1)
 768                         return; /* already the most recent entry */
 769
 770                 /* move the entry to mark it most recent */
 771                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 772                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 773                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 774                 os_memcpy(s->p2p_client_list +
 775                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 776                 found = 1;
 777                 break;
 778         }
 779
 780         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 781                 n = os_realloc_array(s->p2p_client_list,
 782                                      s->num_p2p_clients + 1, ETH_ALEN);
 783                 if (n == NULL)
 784                         return;
 785                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 786                 s->p2p_client_list = n;
 787                 s->num_p2p_clients++;
 788         } else if (!found) {
 789                 /* Not enough room for an additional entry - drop the oldest
 790                  * entry */
 791                 os_memmove(s->p2p_client_list,
 792                            s->p2p_client_list + ETH_ALEN,
 793                            (s->num_p2p_clients - 1) * ETH_ALEN);
 794                 os_memcpy(s->p2p_client_list +
 795                           (s->num_p2p_clients - 1) * ETH_ALEN,
 796                           addr, ETH_ALEN);
 797         }
 798
 799         if (wpa_s->parent->conf->update_config &&
 800             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 801                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 802 }
 803
 804
 805 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 806                                            int success)
 807 {
 808         struct wpa_ssid *ssid;
 809         const char *ssid_txt;
 810         int client;
 811         int persistent;
 812         u8 go_dev_addr[ETH_ALEN];
 813         int network_id = -1;
 814
 815         /*
 816          * This callback is likely called for the main interface. Update wpa_s
 817          * to use the group interface if a new interface was created for the
 818          * group.
 819          */
 820         if (wpa_s->global->p2p_group_formation)
 821                 wpa_s = wpa_s->global->p2p_group_formation;
 822         if (wpa_s->p2p_go_group_formation_completed) {
 823                 wpa_s->global->p2p_group_formation = NULL;
 824                 wpa_s->p2p_in_provisioning = 0;
 825         }
 826         wpa_s->p2p_in_invitation = 0;
 827
 828         if (!success) {
 829                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 830                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 831                 wpas_p2p_group_delete(wpa_s,
 832                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 833                 return;
 834         }
 835
 836         wpa_msg_global(wpa_s->parent, MSG_INFO,
 837                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 838
 839         ssid = wpa_s->current_ssid;
 840         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 841                 ssid->mode = WPAS_MODE_P2P_GO;
 842                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 843                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 844         }
 845
 846         persistent = 0;
 847         if (ssid) {
 848                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 849                 client = ssid->mode == WPAS_MODE_INFRA;
 850                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 851                         persistent = ssid->p2p_persistent_group;
 852                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 853                                   ETH_ALEN);
 854                 } else
 855                         persistent = wpas_p2p_persistent_group(wpa_s,
 856                                                                go_dev_addr,
 857                                                                ssid->ssid,
 858                                                                ssid->ssid_len);
 859         } else {
 860                 ssid_txt = "";
 861                 client = wpa_s->p2p_group_interface ==
 862                         P2P_GROUP_INTERFACE_CLIENT;
 863                 os_memset(go_dev_addr, 0, ETH_ALEN);
 864         }
 865
 866         wpa_s->show_group_started = 0;
 867         if (client) {
 868                 /*
 869                  * Indicate event only after successfully completed 4-way
 870                  * handshake, i.e., when the interface is ready for data
 871                  * packets.
 872                  */
 873                 wpa_s->show_group_started = 1;
 874         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 875                 char psk[65];
 876                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 877                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 878                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 879                                MACSTR "%s",
 880                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 881                                MAC2STR(go_dev_addr),
 882                                persistent ? " [PERSISTENT]" : "");
 883                 wpas_p2p_cross_connect_setup(wpa_s);
 884                 wpas_p2p_set_group_idle_timeout(wpa_s);
 885         } else {
 886                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 887                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 888                                "go_dev_addr=" MACSTR "%s",
 889                                wpa_s->ifname, ssid_txt,
 890                                ssid ? ssid->frequency : 0,
 891                                ssid && ssid->passphrase ? ssid->passphrase : "",
 892                                MAC2STR(go_dev_addr),
 893                                persistent ? " [PERSISTENT]" : "");
 894                 wpas_p2p_cross_connect_setup(wpa_s);
 895                 wpas_p2p_set_group_idle_timeout(wpa_s);
 896         }
 897
 898         if (persistent)
 899                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 900                                                              ssid, go_dev_addr);
 901         else {
 902                 os_free(wpa_s->global->add_psk);
 903                 wpa_s->global->add_psk = NULL;
 904         }
 905         if (network_id < 0 && ssid)
 906                 network_id = ssid->id;
 907         if (!client) {
 908                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 909                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 910         }
 911 }
 912
 913
 914 struct send_action_work {
 915         unsigned int freq;
 916         u8 dst[ETH_ALEN];
 917         u8 src[ETH_ALEN];
 918         u8 bssid[ETH_ALEN];
 919         size_t len;
 920         unsigned int wait_time;
 921         u8 buf[0];
 922 };
 923
 924
 925 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 926                                               void *timeout_ctx)
 927 {
 928         struct wpa_supplicant *wpa_s = eloop_ctx;
 929
 930         if (!wpa_s->p2p_send_action_work)
 931                 return;
 932
 933         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 934         os_free(wpa_s->p2p_send_action_work->ctx);
 935         radio_work_done(wpa_s->p2p_send_action_work);
 936         wpa_s->p2p_send_action_work = NULL;
 937 }
 938
 939
 940 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 941                                            unsigned int freq,
 942                                            const u8 *dst, const u8 *src,
 943                                            const u8 *bssid,
 944                                            const u8 *data, size_t data_len,
 945                                            enum offchannel_send_action_result
 946                                            result)
 947 {
 948         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 949
 950         if (wpa_s->p2p_send_action_work) {
 951                 struct send_action_work *awork;
 952                 awork = wpa_s->p2p_send_action_work->ctx;
 953                 if (awork->wait_time == 0) {
 954                         os_free(awork);
 955                         radio_work_done(wpa_s->p2p_send_action_work);
 956                         wpa_s->p2p_send_action_work = NULL;
 957                 } else {
 958                         /*
 959                          * In theory, this should not be needed, but number of
 960                          * places in the P2P code is still using non-zero wait
 961                          * time for the last Action frame in the sequence and
 962                          * some of these do not call send_action_done().
 963                          */
 964                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 965                                              wpa_s, NULL);
 966                         eloop_register_timeout(
 967                                 0, awork->wait_time * 1000,
 968                                 wpas_p2p_send_action_work_timeout,
 969                                 wpa_s, NULL);
 970                 }
 971         }
 972
 973         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 974                 return;
 975
 976         switch (result) {
 977         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 978                 res = P2P_SEND_ACTION_SUCCESS;
 979                 break;
 980         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 981                 res = P2P_SEND_ACTION_NO_ACK;
 982                 break;
 983         case OFFCHANNEL_SEND_ACTION_FAILED:
 984                 res = P2P_SEND_ACTION_FAILED;
 985                 break;
 986         }
 987
 988         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 989
 990         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 991             wpa_s->pending_pd_before_join &&
 992             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 993              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 994             wpa_s->p2p_fallback_to_go_neg) {
 995                 wpa_s->pending_pd_before_join = 0;
 996                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 997                         "during p2p_connect-auto");
 998                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 999                 return;
1000         }
1001 }
1002
1003
1004 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1005 {
1006         struct wpa_supplicant *wpa_s = work->wpa_s;
1007         struct send_action_work *awork = work->ctx;
1008
1009         if (deinit) {
1010                 if (work->started) {
1011                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1012                                              wpa_s, NULL);
1013                         wpa_s->p2p_send_action_work = NULL;
1014                         offchannel_send_action_done(wpa_s);
1015                 }
1016                 os_free(awork);
1017                 return;
1018         }
1019
1020         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1021                                    awork->bssid, awork->buf, awork->len,
1022                                    awork->wait_time,
1023                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1024                 os_free(awork);
1025                 radio_work_done(work);
1026                 return;
1027         }
1028         wpa_s->p2p_send_action_work = work;
1029 }
1030
1031
1032 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1033                                  unsigned int freq, const u8 *dst,
1034                                  const u8 *src, const u8 *bssid, const u8 *buf,
1035                                  size_t len, unsigned int wait_time)
1036 {
1037         struct send_action_work *awork;
1038
1039         if (wpa_s->p2p_send_action_work) {
1040                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1041                 return -1;
1042         }
1043
1044         awork = os_zalloc(sizeof(*awork) + len);
1045         if (awork == NULL)
1046                 return -1;
1047
1048         awork->freq = freq;
1049         os_memcpy(awork->dst, dst, ETH_ALEN);
1050         os_memcpy(awork->src, src, ETH_ALEN);
1051         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1052         awork->len = len;
1053         awork->wait_time = wait_time;
1054         os_memcpy(awork->buf, buf, len);
1055
1056         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1057                            wpas_send_action_cb, awork) < 0) {
1058                 os_free(awork);
1059                 return -1;
1060         }
1061
1062         return 0;
1063 }
1064
1065
1066 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1067                             const u8 *src, const u8 *bssid, const u8 *buf,
1068                             size_t len, unsigned int wait_time)
1069 {
1070         struct wpa_supplicant *wpa_s = ctx;
1071         int listen_freq = -1, send_freq = -1;
1072
1073         if (wpa_s->p2p_listen_work)
1074                 listen_freq = wpa_s->p2p_listen_work->freq;
1075         if (wpa_s->p2p_send_action_work)
1076                 send_freq = wpa_s->p2p_send_action_work->freq;
1077         if (listen_freq != (int) freq && send_freq != (int) freq) {
1078                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1079                            listen_freq, send_freq);
1080                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1081                                              len, wait_time);
1082         }
1083
1084         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1085         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1086                                       wait_time,
1087                                       wpas_p2p_send_action_tx_status, 1);
1088 }
1089
1090
1091 static void wpas_send_action_done(void *ctx)
1092 {
1093         struct wpa_supplicant *wpa_s = ctx;
1094
1095         if (wpa_s->p2p_send_action_work) {
1096                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1097                                      wpa_s, NULL);
1098                 os_free(wpa_s->p2p_send_action_work->ctx);
1099                 radio_work_done(wpa_s->p2p_send_action_work);
1100                 wpa_s->p2p_send_action_work = NULL;
1101         }
1102
1103         offchannel_send_action_done(wpa_s);
1104 }
1105
1106
1107 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1108                                     struct p2p_go_neg_results *params)
1109 {
1110         if (wpa_s->go_params == NULL) {
1111                 wpa_s->go_params = os_malloc(sizeof(*params));
1112                 if (wpa_s->go_params == NULL)
1113                         return -1;
1114         }
1115         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1116         return 0;
1117 }
1118
1119
1120 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1121                                     struct p2p_go_neg_results *res)
1122 {
1123         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1124                    " dev_addr " MACSTR " wps_method %d",
1125                    MAC2STR(res->peer_interface_addr),
1126                    MAC2STR(res->peer_device_addr), res->wps_method);
1127         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1128                           res->ssid, res->ssid_len);
1129         wpa_supplicant_ap_deinit(wpa_s);
1130         wpas_copy_go_neg_results(wpa_s, res);
1131         if (res->wps_method == WPS_PBC) {
1132                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1133 #ifdef CONFIG_WPS_NFC
1134         } else if (res->wps_method == WPS_NFC) {
1135                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1136                                    res->peer_interface_addr,
1137                                    wpa_s->parent->p2p_oob_dev_pw,
1138                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1139                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1140                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1141                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1142                                    NULL,
1143                                    NULL, 0, 0);
1144 #endif /* CONFIG_WPS_NFC */
1145         } else {
1146                 u16 dev_pw_id = DEV_PW_DEFAULT;
1147                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1148                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1149                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1150                                    wpa_s->p2p_pin, 1, dev_pw_id);
1151         }
1152 }
1153
1154
1155 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1156                                   struct wpa_ssid *ssid)
1157 {
1158         struct wpa_ssid *persistent;
1159         struct psk_list_entry *psk;
1160         struct hostapd_data *hapd;
1161
1162         if (!wpa_s->ap_iface)
1163                 return;
1164
1165         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1166                                              ssid->ssid_len);
1167         if (persistent == NULL)
1168                 return;
1169
1170         hapd = wpa_s->ap_iface->bss[0];
1171
1172         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1173                          list) {
1174                 struct hostapd_wpa_psk *hpsk;
1175
1176                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1177                         MACSTR " psk=%d",
1178                         MAC2STR(psk->addr), psk->p2p);
1179                 hpsk = os_zalloc(sizeof(*hpsk));
1180                 if (hpsk == NULL)
1181                         break;
1182                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1183                 if (psk->p2p)
1184                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1185                 else
1186                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1187                 hpsk->next = hapd->conf->ssid.wpa_psk;
1188                 hapd->conf->ssid.wpa_psk = hpsk;
1189         }
1190 }
1191
1192
1193 static void p2p_go_configured(void *ctx, void *data)
1194 {
1195         struct wpa_supplicant *wpa_s = ctx;
1196         struct p2p_go_neg_results *params = data;
1197         struct wpa_ssid *ssid;
1198         int network_id = -1;
1199
1200         ssid = wpa_s->current_ssid;
1201         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1202                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1203                 if (wpa_s->global->p2p_group_formation == wpa_s)
1204                         wpa_s->global->p2p_group_formation = NULL;
1205                 if (os_strlen(params->passphrase) > 0) {
1206                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1207                                        P2P_EVENT_GROUP_STARTED
1208                                        "%s GO ssid=\"%s\" freq=%d "
1209                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1210                                        "%s", wpa_s->ifname,
1211                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1212                                        ssid->frequency, params->passphrase,
1213                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1214                                        params->persistent_group ?
1215                                        " [PERSISTENT]" : "");
1216                 } else {
1217                         char psk[65];
1218                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1219                                          sizeof(params->psk));
1220                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1221                                        P2P_EVENT_GROUP_STARTED
1222                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1223                                        "go_dev_addr=" MACSTR "%s",
1224                                        wpa_s->ifname,
1225                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1226                                        ssid->frequency, psk,
1227                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1228                                        params->persistent_group ?
1229                                        " [PERSISTENT]" : "");
1230                 }
1231
1232                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1233                 if (params->persistent_group) {
1234                         network_id = wpas_p2p_store_persistent_group(
1235                                 wpa_s->parent, ssid,
1236                                 wpa_s->global->p2p_dev_addr);
1237                         wpas_p2p_add_psk_list(wpa_s, ssid);
1238                 }
1239                 if (network_id < 0)
1240                         network_id = ssid->id;
1241                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1242                 wpas_p2p_cross_connect_setup(wpa_s);
1243                 wpas_p2p_set_group_idle_timeout(wpa_s);
1244
1245                 if (wpa_s->p2p_first_connection_timeout) {
1246                         wpa_dbg(wpa_s, MSG_DEBUG,
1247                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1248                                 wpa_s->p2p_first_connection_timeout);
1249                         wpa_s->p2p_go_group_formation_completed = 0;
1250                         wpa_s->global->p2p_group_formation = wpa_s;
1251                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1252                                              wpa_s->parent, NULL);
1253                         eloop_register_timeout(
1254                                 wpa_s->p2p_first_connection_timeout, 0,
1255                                 wpas_p2p_group_formation_timeout,
1256                                 wpa_s->parent, NULL);
1257                 }
1258
1259                 return;
1260         }
1261
1262         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1263         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1264                                               params->peer_interface_addr)) {
1265                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1266                            "filtering");
1267                 return;
1268         }
1269         if (params->wps_method == WPS_PBC) {
1270                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1271                                           params->peer_device_addr);
1272 #ifdef CONFIG_WPS_NFC
1273         } else if (params->wps_method == WPS_NFC) {
1274                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1275                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1276                     !wpa_s->parent->p2p_oob_dev_pw) {
1277                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1278                         return;
1279                 }
1280                 wpas_ap_wps_add_nfc_pw(
1281                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1282                         wpa_s->parent->p2p_oob_dev_pw,
1283                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1284                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1285 #endif /* CONFIG_WPS_NFC */
1286         } else if (wpa_s->p2p_pin[0])
1287                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1288                                           wpa_s->p2p_pin, NULL, 0, 0);
1289         os_free(wpa_s->go_params);
1290         wpa_s->go_params = NULL;
1291 }
1292
1293
1294 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1295                               struct p2p_go_neg_results *params,
1296                               int group_formation)
1297 {
1298         struct wpa_ssid *ssid;
1299
1300         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1301         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1302                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1303                         "results");
1304                 return;
1305         }
1306
1307         ssid = wpa_config_add_network(wpa_s->conf);
1308         if (ssid == NULL) {
1309                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1310                 return;
1311         }
1312
1313         wpa_s->show_group_started = 0;
1314
1315         wpa_config_set_network_defaults(ssid);
1316         ssid->temporary = 1;
1317         ssid->p2p_group = 1;
1318         ssid->p2p_persistent_group = params->persistent_group;
1319         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1320                 WPAS_MODE_P2P_GO;
1321         ssid->frequency = params->freq;
1322         ssid->ht40 = params->ht40;
1323         ssid->vht = params->vht;
1324         ssid->ssid = os_zalloc(params->ssid_len + 1);
1325         if (ssid->ssid) {
1326                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1327                 ssid->ssid_len = params->ssid_len;
1328         }
1329         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1330         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1331         ssid->proto = WPA_PROTO_RSN;
1332         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1333         if (os_strlen(params->passphrase) > 0) {
1334                 ssid->passphrase = os_strdup(params->passphrase);
1335                 if (ssid->passphrase == NULL) {
1336                         wpa_msg_global(wpa_s, MSG_ERROR,
1337                                        "P2P: Failed to copy passphrase for GO");
1338                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1339                         return;
1340                 }
1341         } else
1342                 ssid->passphrase = NULL;
1343         ssid->psk_set = params->psk_set;
1344         if (ssid->psk_set)
1345                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1346         else if (ssid->passphrase)
1347                 wpa_config_update_psk(ssid);
1348         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1349
1350         wpa_s->ap_configured_cb = p2p_go_configured;
1351         wpa_s->ap_configured_cb_ctx = wpa_s;
1352         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1353         wpa_s->connect_without_scan = ssid;
1354         wpa_s->reassociate = 1;
1355         wpa_s->disconnected = 0;
1356         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1357                 "start GO)");
1358         wpa_supplicant_req_scan(wpa_s, 0, 0);
1359 }
1360
1361
1362 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1363                                   const struct wpa_supplicant *src)
1364 {
1365         struct wpa_config *d;
1366         const struct wpa_config *s;
1367
1368         d = dst->conf;
1369         s = src->conf;
1370
1371 #define C(n) if (s->n) d->n = os_strdup(s->n)
1372         C(device_name);
1373         C(manufacturer);
1374         C(model_name);
1375         C(model_number);
1376         C(serial_number);
1377         C(config_methods);
1378 #undef C
1379
1380         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1381         os_memcpy(d->sec_device_type, s->sec_device_type,
1382                   sizeof(d->sec_device_type));
1383         d->num_sec_device_types = s->num_sec_device_types;
1384
1385         d->p2p_group_idle = s->p2p_group_idle;
1386         d->p2p_intra_bss = s->p2p_intra_bss;
1387         d->persistent_reconnect = s->persistent_reconnect;
1388         d->max_num_sta = s->max_num_sta;
1389         d->pbc_in_m1 = s->pbc_in_m1;
1390         d->ignore_old_scan_res = s->ignore_old_scan_res;
1391         d->beacon_int = s->beacon_int;
1392         d->dtim_period = s->dtim_period;
1393         d->disassoc_low_ack = s->disassoc_low_ack;
1394         d->disable_scan_offload = s->disable_scan_offload;
1395
1396         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1397                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1398                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1399         }
1400 }
1401
1402
1403 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1404                                       char *ifname, size_t len)
1405 {
1406         char *ifname_ptr = wpa_s->ifname;
1407
1408         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1409                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1410                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1411         }
1412
1413         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1414         if (os_strlen(ifname) >= IFNAMSIZ &&
1415             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1416                 /* Try to avoid going over the IFNAMSIZ length limit */
1417                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1418         }
1419 }
1420
1421
1422 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1423                                         enum wpa_driver_if_type type)
1424 {
1425         char ifname[120], force_ifname[120];
1426
1427         if (wpa_s->pending_interface_name[0]) {
1428                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1429                            "- skip creation of a new one");
1430                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1431                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1432                                    "unknown?! ifname='%s'",
1433                                    wpa_s->pending_interface_name);
1434                         return -1;
1435                 }
1436                 return 0;
1437         }
1438
1439         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1440         force_ifname[0] = '\0';
1441
1442         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1443                    ifname);
1444         wpa_s->p2p_group_idx++;
1445
1446         wpa_s->pending_interface_type = type;
1447         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1448                            wpa_s->pending_interface_addr, NULL) < 0) {
1449                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1450                            "interface");
1451                 return -1;
1452         }
1453
1454         if (force_ifname[0]) {
1455                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1456                            force_ifname);
1457                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1458                            sizeof(wpa_s->pending_interface_name));
1459         } else
1460                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1461                            sizeof(wpa_s->pending_interface_name));
1462         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1463                    MACSTR, wpa_s->pending_interface_name,
1464                    MAC2STR(wpa_s->pending_interface_addr));
1465
1466         return 0;
1467 }
1468
1469
1470 static void wpas_p2p_remove_pending_group_interface(
1471         struct wpa_supplicant *wpa_s)
1472 {
1473         if (!wpa_s->pending_interface_name[0] ||
1474             is_zero_ether_addr(wpa_s->pending_interface_addr))
1475                 return; /* No pending virtual interface */
1476
1477         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1478                    wpa_s->pending_interface_name);
1479         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1480                           wpa_s->pending_interface_name);
1481         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1482         wpa_s->pending_interface_name[0] = '\0';
1483 }
1484
1485
1486 static struct wpa_supplicant *
1487 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1488 {
1489         struct wpa_interface iface;
1490         struct wpa_supplicant *group_wpa_s;
1491
1492         if (!wpa_s->pending_interface_name[0]) {
1493                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1494                 if (!wpas_p2p_create_iface(wpa_s))
1495                         return NULL;
1496                 /*
1497                  * Something has forced us to remove the pending interface; try
1498                  * to create a new one and hope for the best that we will get
1499                  * the same local address.
1500                  */
1501                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1502                                                  WPA_IF_P2P_CLIENT) < 0)
1503                         return NULL;
1504         }
1505
1506         os_memset(&iface, 0, sizeof(iface));
1507         iface.ifname = wpa_s->pending_interface_name;
1508         iface.driver = wpa_s->driver->name;
1509         if (wpa_s->conf->ctrl_interface == NULL &&
1510             wpa_s->parent != wpa_s &&
1511             wpa_s->p2p_mgmt &&
1512             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1513                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1514         else
1515                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1516         iface.driver_param = wpa_s->conf->driver_param;
1517         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1518         if (group_wpa_s == NULL) {
1519                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1520                            "wpa_supplicant interface");
1521                 return NULL;
1522         }
1523         wpa_s->pending_interface_name[0] = '\0';
1524         group_wpa_s->parent = wpa_s;
1525         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1526                 P2P_GROUP_INTERFACE_CLIENT;
1527         wpa_s->global->p2p_group_formation = group_wpa_s;
1528
1529         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1530
1531         return group_wpa_s;
1532 }
1533
1534
1535 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1536                                              void *timeout_ctx)
1537 {
1538         struct wpa_supplicant *wpa_s = eloop_ctx;
1539         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1540         wpas_p2p_group_formation_failed(wpa_s);
1541 }
1542
1543
1544 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1545 {
1546         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1547                              wpa_s->parent, NULL);
1548         if (wpa_s->global->p2p)
1549                 p2p_group_formation_failed(wpa_s->global->p2p);
1550         wpas_group_formation_completed(wpa_s, 0);
1551 }
1552
1553
1554 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1555 {
1556         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1557         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1558                              wpa_s->parent, NULL);
1559         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1560                                wpa_s->parent, NULL);
1561         wpa_s->global->p2p_fail_on_wps_complete = 0;
1562 }
1563
1564
1565 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1566 {
1567         if (wpa_s->global->p2p_group_formation != wpa_s)
1568                 return;
1569         /* Speed up group formation timeout since this cannot succeed */
1570         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1571                              wpa_s->parent, NULL);
1572         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1573                                wpa_s->parent, NULL);
1574 }
1575
1576
1577 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1578 {
1579         struct wpa_supplicant *wpa_s = ctx;
1580
1581         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1582                 wpa_drv_cancel_remain_on_channel(wpa_s);
1583                 wpa_s->off_channel_freq = 0;
1584                 wpa_s->roc_waiting_drv_freq = 0;
1585         }
1586
1587         if (res->status) {
1588                 wpa_msg_global(wpa_s, MSG_INFO,
1589                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1590                                res->status);
1591                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1592                 wpas_p2p_remove_pending_group_interface(wpa_s);
1593                 return;
1594         }
1595
1596         if (wpa_s->p2p_go_ht40)
1597                 res->ht40 = 1;
1598         if (wpa_s->p2p_go_vht)
1599                 res->vht = 1;
1600
1601         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1602                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1603                        " wps_method=%s",
1604                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1605                        MAC2STR(res->peer_device_addr),
1606                        MAC2STR(res->peer_interface_addr),
1607                        p2p_wps_method_text(res->wps_method));
1608         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1609
1610         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1611                 struct wpa_ssid *ssid;
1612                 ssid = wpa_config_get_network(wpa_s->conf,
1613                                               wpa_s->p2p_persistent_id);
1614                 if (ssid && ssid->disabled == 2 &&
1615                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1616                         size_t len = os_strlen(ssid->passphrase);
1617                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1618                                    "on requested persistent group");
1619                         os_memcpy(res->passphrase, ssid->passphrase, len);
1620                         res->passphrase[len] = '\0';
1621                 }
1622         }
1623
1624         if (wpa_s->create_p2p_iface) {
1625                 struct wpa_supplicant *group_wpa_s =
1626                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1627                 if (group_wpa_s == NULL) {
1628                         wpas_p2p_remove_pending_group_interface(wpa_s);
1629                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1630                                              wpa_s, NULL);
1631                         wpas_p2p_group_formation_failed(wpa_s);
1632                         return;
1633                 }
1634                 if (group_wpa_s != wpa_s) {
1635                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1636                                   sizeof(group_wpa_s->p2p_pin));
1637                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1638                 }
1639                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1640                 wpa_s->pending_interface_name[0] = '\0';
1641                 group_wpa_s->p2p_in_provisioning = 1;
1642
1643                 if (res->role_go)
1644                         wpas_start_wps_go(group_wpa_s, res, 1);
1645                 else
1646                         wpas_start_wps_enrollee(group_wpa_s, res);
1647         } else {
1648                 wpa_s->p2p_in_provisioning = 1;
1649                 wpa_s->global->p2p_group_formation = wpa_s;
1650
1651                 if (res->role_go)
1652                         wpas_start_wps_go(wpa_s, res, 1);
1653                 else
1654                         wpas_start_wps_enrollee(ctx, res);
1655         }
1656
1657         wpa_s->p2p_long_listen = 0;
1658         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1659
1660         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1661         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1662                                (res->peer_config_timeout % 100) * 10000,
1663                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1664 }
1665
1666
1667 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1668 {
1669         struct wpa_supplicant *wpa_s = ctx;
1670         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1671                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1672
1673         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1674 }
1675
1676
1677 static void wpas_dev_found(void *ctx, const u8 *addr,
1678                            const struct p2p_peer_info *info,
1679                            int new_device)
1680 {
1681 #ifndef CONFIG_NO_STDOUT_DEBUG
1682         struct wpa_supplicant *wpa_s = ctx;
1683         char devtype[WPS_DEV_TYPE_BUFSIZE];
1684         char *wfd_dev_info_hex = NULL;
1685
1686 #ifdef CONFIG_WIFI_DISPLAY
1687         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1688                                                     WFD_SUBELEM_DEVICE_INFO);
1689 #endif /* CONFIG_WIFI_DISPLAY */
1690
1691         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1692                        " p2p_dev_addr=" MACSTR
1693                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1694                        "dev_capab=0x%x group_capab=0x%x%s%s",
1695                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1696                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1697                                             sizeof(devtype)),
1698                        info->device_name, info->config_methods,
1699                        info->dev_capab, info->group_capab,
1700                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1701                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1702
1703         os_free(wfd_dev_info_hex);
1704 #endif /* CONFIG_NO_STDOUT_DEBUG */
1705
1706         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1707 }
1708
1709
1710 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1711 {
1712         struct wpa_supplicant *wpa_s = ctx;
1713
1714         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1715                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1716
1717         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1718 }
1719
1720
1721 static void wpas_find_stopped(void *ctx)
1722 {
1723         struct wpa_supplicant *wpa_s = ctx;
1724         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1725 }
1726
1727
1728 struct wpas_p2p_listen_work {
1729         unsigned int freq;
1730         unsigned int duration;
1731         struct wpabuf *probe_resp_ie;
1732 };
1733
1734
1735 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1736 {
1737         if (lwork == NULL)
1738                 return;
1739         wpabuf_free(lwork->probe_resp_ie);
1740         os_free(lwork);
1741 }
1742
1743
1744 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1745 {
1746         struct wpas_p2p_listen_work *lwork;
1747
1748         if (!wpa_s->p2p_listen_work)
1749                 return;
1750
1751         lwork = wpa_s->p2p_listen_work->ctx;
1752         wpas_p2p_listen_work_free(lwork);
1753         radio_work_done(wpa_s->p2p_listen_work);
1754         wpa_s->p2p_listen_work = NULL;
1755 }
1756
1757
1758 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1759 {
1760         struct wpa_supplicant *wpa_s = work->wpa_s;
1761         struct wpas_p2p_listen_work *lwork = work->ctx;
1762
1763         if (deinit) {
1764                 if (work->started) {
1765                         wpa_s->p2p_listen_work = NULL;
1766                         wpas_stop_listen(wpa_s);
1767                 }
1768                 wpas_p2p_listen_work_free(lwork);
1769                 return;
1770         }
1771
1772         wpa_s->p2p_listen_work = work;
1773
1774         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1775
1776         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1777                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1778                            "report received Probe Request frames");
1779                 wpas_p2p_listen_work_done(wpa_s);
1780                 return;
1781         }
1782
1783         wpa_s->pending_listen_freq = lwork->freq;
1784         wpa_s->pending_listen_duration = lwork->duration;
1785
1786         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1787         {
1788                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1789                            "to remain on channel (%u MHz) for Listen "
1790                            "state", lwork->freq);
1791                 wpas_p2p_listen_work_done(wpa_s);
1792                 wpa_s->pending_listen_freq = 0;
1793                 return;
1794         }
1795         wpa_s->off_channel_freq = 0;
1796         wpa_s->roc_waiting_drv_freq = lwork->freq;
1797 }
1798
1799
1800 static int wpas_start_listen(void *ctx, unsigned int freq,
1801                              unsigned int duration,
1802                              const struct wpabuf *probe_resp_ie)
1803 {
1804         struct wpa_supplicant *wpa_s = ctx;
1805         struct wpas_p2p_listen_work *lwork;
1806
1807         if (wpa_s->p2p_listen_work) {
1808                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1809                 return -1;
1810         }
1811
1812         lwork = os_zalloc(sizeof(*lwork));
1813         if (lwork == NULL)
1814                 return -1;
1815         lwork->freq = freq;
1816         lwork->duration = duration;
1817         if (probe_resp_ie) {
1818                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1819                 if (lwork->probe_resp_ie == NULL) {
1820                         wpas_p2p_listen_work_free(lwork);
1821                         return -1;
1822                 }
1823         }
1824
1825         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1826                            lwork) < 0) {
1827                 wpas_p2p_listen_work_free(lwork);
1828                 return -1;
1829         }
1830
1831         return 0;
1832 }
1833
1834
1835 static void wpas_stop_listen(void *ctx)
1836 {
1837         struct wpa_supplicant *wpa_s = ctx;
1838         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1839                 wpa_drv_cancel_remain_on_channel(wpa_s);
1840                 wpa_s->off_channel_freq = 0;
1841                 wpa_s->roc_waiting_drv_freq = 0;
1842         }
1843         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1844         wpa_drv_probe_req_report(wpa_s, 0);
1845         wpas_p2p_listen_work_done(wpa_s);
1846 }
1847
1848
1849 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1850 {
1851         struct wpa_supplicant *wpa_s = ctx;
1852         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1853 }
1854
1855
1856 /*
1857  * DNS Header section is used only to calculate compression pointers, so the
1858  * contents of this data does not matter, but the length needs to be reserved
1859  * in the virtual packet.
1860  */
1861 #define DNS_HEADER_LEN 12
1862
1863 /*
1864  * 27-octet in-memory packet from P2P specification containing two implied
1865  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1866  */
1867 #define P2P_SD_IN_MEMORY_LEN 27
1868
1869 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1870                                        u8 **spos, const u8 *end)
1871 {
1872         while (*spos < end) {
1873                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1874                 int len;
1875
1876                 if (val == 1 || val == 2) {
1877                         /* These are reserved values in RFC 1035 */
1878                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1879                                    "sequence starting with 0x%x", val);
1880                         return -1;
1881                 }
1882
1883                 if (val == 3) {
1884                         u16 offset;
1885                         u8 *spos_tmp;
1886
1887                         /* Offset */
1888                         if (*spos + 2 > end) {
1889                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1890                                            "DNS offset field");
1891                                 return -1;
1892                         }
1893
1894                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1895                         if (offset >= *spos - start) {
1896                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1897                                            "pointer offset %u", offset);
1898                                 return -1;
1899                         }
1900
1901                         (*spos) += 2;
1902                         spos_tmp = start + offset;
1903                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1904                                                            &spos_tmp,
1905                                                            *spos - 2);
1906                 }
1907
1908                 /* Label */
1909                 len = (*spos)[0] & 0x3f;
1910                 if (len == 0)
1911                         return 0;
1912
1913                 (*spos)++;
1914                 if (*spos + len > end) {
1915                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1916                                    "sequence - no room for label with length "
1917                                    "%u", len);
1918                         return -1;
1919                 }
1920
1921                 if (*upos + len + 2 > uend)
1922                         return -2;
1923
1924                 os_memcpy(*upos, *spos, len);
1925                 *spos += len;
1926                 *upos += len;
1927                 (*upos)[0] = '.';
1928                 (*upos)++;
1929                 (*upos)[0] = '\0';
1930         }
1931
1932         return 0;
1933 }
1934
1935
1936 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1937  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1938  * not large enough */
1939 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1940                                  size_t msg_len, size_t offset)
1941 {
1942         /* 27-octet in-memory packet from P2P specification */
1943         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1944                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1945         u8 *tmp, *end, *spos;
1946         char *upos, *uend;
1947         int ret = 0;
1948
1949         if (buf_len < 2)
1950                 return -1;
1951         if (offset > msg_len)
1952                 return -1;
1953
1954         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1955         if (tmp == NULL)
1956                 return -1;
1957         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1958         end = spos + msg_len;
1959         spos += offset;
1960
1961         os_memset(tmp, 0, DNS_HEADER_LEN);
1962         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1963         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1964
1965         upos = buf;
1966         uend = buf + buf_len;
1967
1968         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1969         if (ret) {
1970                 os_free(tmp);
1971                 return ret;
1972         }
1973
1974         if (upos == buf) {
1975                 upos[0] = '.';
1976                 upos[1] = '\0';
1977         } else if (upos[-1] == '.')
1978                 upos[-1] = '\0';
1979
1980         os_free(tmp);
1981         return 0;
1982 }
1983
1984
1985 static struct p2p_srv_bonjour *
1986 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1987                              const struct wpabuf *query)
1988 {
1989         struct p2p_srv_bonjour *bsrv;
1990         size_t len;
1991
1992         len = wpabuf_len(query);
1993         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1994                          struct p2p_srv_bonjour, list) {
1995                 if (len == wpabuf_len(bsrv->query) &&
1996                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1997                               len) == 0)
1998                         return bsrv;
1999         }
2000         return NULL;
2001 }
2002
2003
2004 static struct p2p_srv_upnp *
2005 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2006                           const char *service)
2007 {
2008         struct p2p_srv_upnp *usrv;
2009
2010         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2011                          struct p2p_srv_upnp, list) {
2012                 if (version == usrv->version &&
2013                     os_strcmp(service, usrv->service) == 0)
2014                         return usrv;
2015         }
2016         return NULL;
2017 }
2018
2019
2020 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2021                                         u8 srv_trans_id)
2022 {
2023         u8 *len_pos;
2024
2025         if (wpabuf_tailroom(resp) < 5)
2026                 return;
2027
2028         /* Length (to be filled) */
2029         len_pos = wpabuf_put(resp, 2);
2030         wpabuf_put_u8(resp, srv_proto);
2031         wpabuf_put_u8(resp, srv_trans_id);
2032         /* Status Code */
2033         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2034         /* Response Data: empty */
2035         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2036 }
2037
2038
2039 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2040                                 struct wpabuf *resp, u8 srv_trans_id)
2041 {
2042         struct p2p_srv_bonjour *bsrv;
2043         u8 *len_pos;
2044
2045         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2046
2047         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2048                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2049                 return;
2050         }
2051
2052         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2053                          struct p2p_srv_bonjour, list) {
2054                 if (wpabuf_tailroom(resp) <
2055                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2056                         return;
2057                 /* Length (to be filled) */
2058                 len_pos = wpabuf_put(resp, 2);
2059                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2060                 wpabuf_put_u8(resp, srv_trans_id);
2061                 /* Status Code */
2062                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2063                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2064                                   wpabuf_head(bsrv->resp),
2065                                   wpabuf_len(bsrv->resp));
2066                 /* Response Data */
2067                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2068                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2069                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2070                              2);
2071         }
2072 }
2073
2074
2075 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2076                                size_t query_len)
2077 {
2078         char str_rx[256], str_srv[256];
2079
2080         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2081                 return 0; /* Too short to include DNS Type and Version */
2082         if (os_memcmp(query + query_len - 3,
2083                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2084                       3) != 0)
2085                 return 0; /* Mismatch in DNS Type or Version */
2086         if (query_len == wpabuf_len(bsrv->query) &&
2087             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2088                 return 1; /* Binary match */
2089
2090         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2091                                   0))
2092                 return 0; /* Failed to uncompress query */
2093         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2094                                   wpabuf_head(bsrv->query),
2095                                   wpabuf_len(bsrv->query) - 3, 0))
2096                 return 0; /* Failed to uncompress service */
2097
2098         return os_strcmp(str_rx, str_srv) == 0;
2099 }
2100
2101
2102 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2103                                 struct wpabuf *resp, u8 srv_trans_id,
2104                                 const u8 *query, size_t query_len)
2105 {
2106         struct p2p_srv_bonjour *bsrv;
2107         u8 *len_pos;
2108         int matches = 0;
2109
2110         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2111                           query, query_len);
2112         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2113                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2114                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2115                                             srv_trans_id);
2116                 return;
2117         }
2118
2119         if (query_len == 0) {
2120                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2121                 return;
2122         }
2123
2124         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2125                          struct p2p_srv_bonjour, list) {
2126                 if (!match_bonjour_query(bsrv, query, query_len))
2127                         continue;
2128
2129                 if (wpabuf_tailroom(resp) <
2130                     5 + query_len + wpabuf_len(bsrv->resp))
2131                         return;
2132
2133                 matches++;
2134
2135                 /* Length (to be filled) */
2136                 len_pos = wpabuf_put(resp, 2);
2137                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2138                 wpabuf_put_u8(resp, srv_trans_id);
2139
2140                 /* Status Code */
2141                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2142                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2143                                   wpabuf_head(bsrv->resp),
2144                                   wpabuf_len(bsrv->resp));
2145
2146                 /* Response Data */
2147                 wpabuf_put_data(resp, query, query_len); /* Key */
2148                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2149
2150                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2151         }
2152
2153         if (matches == 0) {
2154                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2155                            "available");
2156                 if (wpabuf_tailroom(resp) < 5)
2157                         return;
2158
2159                 /* Length (to be filled) */
2160                 len_pos = wpabuf_put(resp, 2);
2161                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2162                 wpabuf_put_u8(resp, srv_trans_id);
2163
2164                 /* Status Code */
2165                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2166                 /* Response Data: empty */
2167                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2168                              2);
2169         }
2170 }
2171
2172
2173 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2174                              struct wpabuf *resp, u8 srv_trans_id)
2175 {
2176         struct p2p_srv_upnp *usrv;
2177         u8 *len_pos;
2178
2179         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2180
2181         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2182                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2183                 return;
2184         }
2185
2186         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2187                          struct p2p_srv_upnp, list) {
2188                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2189                         return;
2190
2191                 /* Length (to be filled) */
2192                 len_pos = wpabuf_put(resp, 2);
2193                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2194                 wpabuf_put_u8(resp, srv_trans_id);
2195
2196                 /* Status Code */
2197                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2198                 /* Response Data */
2199                 wpabuf_put_u8(resp, usrv->version);
2200                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2201                            usrv->service);
2202                 wpabuf_put_str(resp, usrv->service);
2203                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2204                              2);
2205         }
2206 }
2207
2208
2209 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2210                              struct wpabuf *resp, u8 srv_trans_id,
2211                              const u8 *query, size_t query_len)
2212 {
2213         struct p2p_srv_upnp *usrv;
2214         u8 *len_pos;
2215         u8 version;
2216         char *str;
2217         int count = 0;
2218
2219         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2220                           query, query_len);
2221
2222         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2223                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2224                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2225                                             srv_trans_id);
2226                 return;
2227         }
2228
2229         if (query_len == 0) {
2230                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2231                 return;
2232         }
2233
2234         if (wpabuf_tailroom(resp) < 5)
2235                 return;
2236
2237         /* Length (to be filled) */
2238         len_pos = wpabuf_put(resp, 2);
2239         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2240         wpabuf_put_u8(resp, srv_trans_id);
2241
2242         version = query[0];
2243         str = os_malloc(query_len);
2244         if (str == NULL)
2245                 return;
2246         os_memcpy(str, query + 1, query_len - 1);
2247         str[query_len - 1] = '\0';
2248
2249         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2250                          struct p2p_srv_upnp, list) {
2251                 if (version != usrv->version)
2252                         continue;
2253
2254                 if (os_strcmp(str, "ssdp:all") != 0 &&
2255                     os_strstr(usrv->service, str) == NULL)
2256                         continue;
2257
2258                 if (wpabuf_tailroom(resp) < 2)
2259                         break;
2260                 if (count == 0) {
2261                         /* Status Code */
2262                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2263                         /* Response Data */
2264                         wpabuf_put_u8(resp, version);
2265                 } else
2266                         wpabuf_put_u8(resp, ',');
2267
2268                 count++;
2269
2270                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2271                            usrv->service);
2272                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2273                         break;
2274                 wpabuf_put_str(resp, usrv->service);
2275         }
2276         os_free(str);
2277
2278         if (count == 0) {
2279                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2280                            "available");
2281                 /* Status Code */
2282                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2283                 /* Response Data: empty */
2284         }
2285
2286         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2287 }
2288
2289
2290 #ifdef CONFIG_WIFI_DISPLAY
2291 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2292                             struct wpabuf *resp, u8 srv_trans_id,
2293                             const u8 *query, size_t query_len)
2294 {
2295         const u8 *pos;
2296         u8 role;
2297         u8 *len_pos;
2298
2299         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2300
2301         if (!wpa_s->global->wifi_display) {
2302                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2303                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2304                                             srv_trans_id);
2305                 return;
2306         }
2307
2308         if (query_len < 1) {
2309                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2310                            "Role");
2311                 return;
2312         }
2313
2314         if (wpabuf_tailroom(resp) < 5)
2315                 return;
2316
2317         pos = query;
2318         role = *pos++;
2319         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2320
2321         /* TODO: role specific handling */
2322
2323         /* Length (to be filled) */
2324         len_pos = wpabuf_put(resp, 2);
2325         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2326         wpabuf_put_u8(resp, srv_trans_id);
2327         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2328
2329         while (pos < query + query_len) {
2330                 if (*pos < MAX_WFD_SUBELEMS &&
2331                     wpa_s->global->wfd_subelem[*pos] &&
2332                     wpabuf_tailroom(resp) >=
2333                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2334                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2335                                    "subelement %u", *pos);
2336                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2337                 }
2338                 pos++;
2339         }
2340
2341         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2342 }
2343 #endif /* CONFIG_WIFI_DISPLAY */
2344
2345
2346 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2347                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2348 {
2349         struct wpa_supplicant *wpa_s = ctx;
2350         const u8 *pos = tlvs;
2351         const u8 *end = tlvs + tlvs_len;
2352         const u8 *tlv_end;
2353         u16 slen;
2354         struct wpabuf *resp;
2355         u8 srv_proto, srv_trans_id;
2356         size_t buf_len;
2357         char *buf;
2358
2359         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2360                     tlvs, tlvs_len);
2361         buf_len = 2 * tlvs_len + 1;
2362         buf = os_malloc(buf_len);
2363         if (buf) {
2364                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2365                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2366                              MACSTR " %u %u %s",
2367                              freq, MAC2STR(sa), dialog_token, update_indic,
2368                              buf);
2369                 os_free(buf);
2370         }
2371
2372         if (wpa_s->p2p_sd_over_ctrl_iface) {
2373                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2374                                            update_indic, tlvs, tlvs_len);
2375                 return; /* to be processed by an external program */
2376         }
2377
2378         resp = wpabuf_alloc(10000);
2379         if (resp == NULL)
2380                 return;
2381
2382         while (pos + 1 < end) {
2383                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2384                 slen = WPA_GET_LE16(pos);
2385                 pos += 2;
2386                 if (pos + slen > end || slen < 2) {
2387                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2388                                    "length");
2389                         wpabuf_free(resp);
2390                         return;
2391                 }
2392                 tlv_end = pos + slen;
2393
2394                 srv_proto = *pos++;
2395                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2396                            srv_proto);
2397                 srv_trans_id = *pos++;
2398                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2399                            srv_trans_id);
2400
2401                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2402                             pos, tlv_end - pos);
2403
2404
2405                 if (wpa_s->force_long_sd) {
2406                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2407                                    "response");
2408                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2409                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2410                         goto done;
2411                 }
2412
2413                 switch (srv_proto) {
2414                 case P2P_SERV_ALL_SERVICES:
2415                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2416                                    "for all services");
2417                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2418                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2419                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2420                                            "discovery protocols available");
2421                                 wpas_sd_add_proto_not_avail(
2422                                         resp, P2P_SERV_ALL_SERVICES,
2423                                         srv_trans_id);
2424                                 break;
2425                         }
2426                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2427                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2428                         break;
2429                 case P2P_SERV_BONJOUR:
2430                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2431                                             pos, tlv_end - pos);
2432                         break;
2433                 case P2P_SERV_UPNP:
2434                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2435                                          pos, tlv_end - pos);
2436                         break;
2437 #ifdef CONFIG_WIFI_DISPLAY
2438                 case P2P_SERV_WIFI_DISPLAY:
2439                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2440                                         pos, tlv_end - pos);
2441                         break;
2442 #endif /* CONFIG_WIFI_DISPLAY */
2443                 default:
2444                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2445                                    "protocol %u", srv_proto);
2446                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2447                                                     srv_trans_id);
2448                         break;
2449                 }
2450
2451                 pos = tlv_end;
2452         }
2453
2454 done:
2455         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2456                                    update_indic, tlvs, tlvs_len);
2457
2458         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2459
2460         wpabuf_free(resp);
2461 }
2462
2463
2464 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2465                              const u8 *tlvs, size_t tlvs_len)
2466 {
2467         struct wpa_supplicant *wpa_s = ctx;
2468         const u8 *pos = tlvs;
2469         const u8 *end = tlvs + tlvs_len;
2470         const u8 *tlv_end;
2471         u16 slen;
2472         size_t buf_len;
2473         char *buf;
2474
2475         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2476                     tlvs, tlvs_len);
2477         if (tlvs_len > 1500) {
2478                 /* TODO: better way for handling this */
2479                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2480                              P2P_EVENT_SERV_DISC_RESP MACSTR
2481                              " %u <long response: %u bytes>",
2482                              MAC2STR(sa), update_indic,
2483                              (unsigned int) tlvs_len);
2484         } else {
2485                 buf_len = 2 * tlvs_len + 1;
2486                 buf = os_malloc(buf_len);
2487                 if (buf) {
2488                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2489                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2490                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2491                                      MAC2STR(sa), update_indic, buf);
2492                         os_free(buf);
2493                 }
2494         }
2495
2496         while (pos < end) {
2497                 u8 srv_proto, srv_trans_id, status;
2498
2499                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2500                 slen = WPA_GET_LE16(pos);
2501                 pos += 2;
2502                 if (pos + slen > end || slen < 3) {
2503                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2504                                    "length");
2505                         return;
2506                 }
2507                 tlv_end = pos + slen;
2508
2509                 srv_proto = *pos++;
2510                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2511                            srv_proto);
2512                 srv_trans_id = *pos++;
2513                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2514                            srv_trans_id);
2515                 status = *pos++;
2516                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2517                            status);
2518
2519                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2520                             pos, tlv_end - pos);
2521
2522                 pos = tlv_end;
2523         }
2524
2525         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2526 }
2527
2528
2529 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2530                         const struct wpabuf *tlvs)
2531 {
2532         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2533                 return 0;
2534         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2535 }
2536
2537
2538 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2539                              u8 version, const char *query)
2540 {
2541         struct wpabuf *tlvs;
2542         u64 ret;
2543
2544         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2545         if (tlvs == NULL)
2546                 return 0;
2547         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2548         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2549         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2550         wpabuf_put_u8(tlvs, version);
2551         wpabuf_put_str(tlvs, query);
2552         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2553         wpabuf_free(tlvs);
2554         return ret;
2555 }
2556
2557
2558 #ifdef CONFIG_WIFI_DISPLAY
2559
2560 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2561                                    const struct wpabuf *tlvs)
2562 {
2563         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2564                 return 0;
2565         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2566 }
2567
2568
2569 #define MAX_WFD_SD_SUBELEMS 20
2570
2571 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2572                                 const char *subelems)
2573 {
2574         u8 *len;
2575         const char *pos;
2576         int val;
2577         int count = 0;
2578
2579         len = wpabuf_put(tlvs, 2);
2580         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2581         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2582
2583         wpabuf_put_u8(tlvs, role);
2584
2585         pos = subelems;
2586         while (*pos) {
2587                 val = atoi(pos);
2588                 if (val >= 0 && val < 256) {
2589                         wpabuf_put_u8(tlvs, val);
2590                         count++;
2591                         if (count == MAX_WFD_SD_SUBELEMS)
2592                                 break;
2593                 }
2594                 pos = os_strchr(pos + 1, ',');
2595                 if (pos == NULL)
2596                         break;
2597                 pos++;
2598         }
2599
2600         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2601 }
2602
2603
2604 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2605                                      const u8 *dst, const char *role)
2606 {
2607         struct wpabuf *tlvs;
2608         u64 ret;
2609         const char *subelems;
2610         u8 id = 1;
2611
2612         subelems = os_strchr(role, ' ');
2613         if (subelems == NULL)
2614                 return 0;
2615         subelems++;
2616
2617         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2618         if (tlvs == NULL)
2619                 return 0;
2620
2621         if (os_strstr(role, "[source]"))
2622                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2623         if (os_strstr(role, "[pri-sink]"))
2624                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2625         if (os_strstr(role, "[sec-sink]"))
2626                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2627         if (os_strstr(role, "[source+sink]"))
2628                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2629
2630         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2631         wpabuf_free(tlvs);
2632         return ret;
2633 }
2634
2635 #endif /* CONFIG_WIFI_DISPLAY */
2636
2637
2638 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2639 {
2640         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2641                 return -1;
2642         return p2p_sd_cancel_request(wpa_s->global->p2p,
2643                                      (void *) (uintptr_t) req);
2644 }
2645
2646
2647 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2648                           const u8 *dst, u8 dialog_token,
2649                           const struct wpabuf *resp_tlvs)
2650 {
2651         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2652                 return;
2653         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2654                         resp_tlvs);
2655 }
2656
2657
2658 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2659 {
2660         if (wpa_s->global->p2p)
2661                 p2p_sd_service_update(wpa_s->global->p2p);
2662 }
2663
2664
2665 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2666 {
2667         dl_list_del(&bsrv->list);
2668         wpabuf_free(bsrv->query);
2669         wpabuf_free(bsrv->resp);
2670         os_free(bsrv);
2671 }
2672
2673
2674 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2675 {
2676         dl_list_del(&usrv->list);
2677         os_free(usrv->service);
2678         os_free(usrv);
2679 }
2680
2681
2682 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2683 {
2684         struct p2p_srv_bonjour *bsrv, *bn;
2685         struct p2p_srv_upnp *usrv, *un;
2686
2687         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2688                               struct p2p_srv_bonjour, list)
2689                 wpas_p2p_srv_bonjour_free(bsrv);
2690
2691         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2692                               struct p2p_srv_upnp, list)
2693                 wpas_p2p_srv_upnp_free(usrv);
2694
2695         wpas_p2p_sd_service_update(wpa_s);
2696 }
2697
2698
2699 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2700                                  struct wpabuf *query, struct wpabuf *resp)
2701 {
2702         struct p2p_srv_bonjour *bsrv;
2703
2704         bsrv = os_zalloc(sizeof(*bsrv));
2705         if (bsrv == NULL)
2706                 return -1;
2707         bsrv->query = query;
2708         bsrv->resp = resp;
2709         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2710
2711         wpas_p2p_sd_service_update(wpa_s);
2712         return 0;
2713 }
2714
2715
2716 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2717                                  const struct wpabuf *query)
2718 {
2719         struct p2p_srv_bonjour *bsrv;
2720
2721         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2722         if (bsrv == NULL)
2723                 return -1;
2724         wpas_p2p_srv_bonjour_free(bsrv);
2725         wpas_p2p_sd_service_update(wpa_s);
2726         return 0;
2727 }
2728
2729
2730 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2731                               const char *service)
2732 {
2733         struct p2p_srv_upnp *usrv;
2734
2735         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2736                 return 0; /* Already listed */
2737         usrv = os_zalloc(sizeof(*usrv));
2738         if (usrv == NULL)
2739                 return -1;
2740         usrv->version = version;
2741         usrv->service = os_strdup(service);
2742         if (usrv->service == NULL) {
2743                 os_free(usrv);
2744                 return -1;
2745         }
2746         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2747
2748         wpas_p2p_sd_service_update(wpa_s);
2749         return 0;
2750 }
2751
2752
2753 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2754                               const char *service)
2755 {
2756         struct p2p_srv_upnp *usrv;
2757
2758         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2759         if (usrv == NULL)
2760                 return -1;
2761         wpas_p2p_srv_upnp_free(usrv);
2762         wpas_p2p_sd_service_update(wpa_s);
2763         return 0;
2764 }
2765
2766
2767 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2768                                          const u8 *peer, const char *params,
2769                                          unsigned int generated_pin)
2770 {
2771         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2772                        " %08d%s", MAC2STR(peer), generated_pin, params);
2773 }
2774
2775
2776 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2777                                         const u8 *peer, const char *params)
2778 {
2779         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2780                        "%s", MAC2STR(peer), params);
2781 }
2782
2783
2784 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2785                                const u8 *dev_addr, const u8 *pri_dev_type,
2786                                const char *dev_name, u16 supp_config_methods,
2787                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2788                                size_t group_id_len)
2789 {
2790         struct wpa_supplicant *wpa_s = ctx;
2791         char devtype[WPS_DEV_TYPE_BUFSIZE];
2792         char params[300];
2793         u8 empty_dev_type[8];
2794         unsigned int generated_pin = 0;
2795         struct wpa_supplicant *group = NULL;
2796
2797         if (group_id) {
2798                 for (group = wpa_s->global->ifaces; group; group = group->next)
2799                 {
2800                         struct wpa_ssid *s = group->current_ssid;
2801                         if (s != NULL &&
2802                             s->mode == WPAS_MODE_P2P_GO &&
2803                             group_id_len - ETH_ALEN == s->ssid_len &&
2804                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2805                                       s->ssid_len) == 0)
2806                                 break;
2807                 }
2808         }
2809
2810         if (pri_dev_type == NULL) {
2811                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2812                 pri_dev_type = empty_dev_type;
2813         }
2814         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2815                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2816                     "dev_capab=0x%x group_capab=0x%x%s%s",
2817                     MAC2STR(dev_addr),
2818                     wps_dev_type_bin2str(pri_dev_type, devtype,
2819                                          sizeof(devtype)),
2820                     dev_name, supp_config_methods, dev_capab, group_capab,
2821                     group ? " group=" : "",
2822                     group ? group->ifname : "");
2823         params[sizeof(params) - 1] = '\0';
2824
2825         if (config_methods & WPS_CONFIG_DISPLAY) {
2826                 generated_pin = wps_generate_pin();
2827                 wpas_prov_disc_local_display(wpa_s, peer, params,
2828                                              generated_pin);
2829         } else if (config_methods & WPS_CONFIG_KEYPAD)
2830                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2831         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2832                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2833                                MACSTR "%s", MAC2STR(peer), params);
2834
2835         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2836                                             P2P_PROV_DISC_SUCCESS,
2837                                             config_methods, generated_pin);
2838 }
2839
2840
2841 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2842 {
2843         struct wpa_supplicant *wpa_s = ctx;
2844         unsigned int generated_pin = 0;
2845         char params[20];
2846
2847         if (wpa_s->pending_pd_before_join &&
2848             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2849              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2850                 wpa_s->pending_pd_before_join = 0;
2851                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2852                            "join-existing-group operation");
2853                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2854                 return;
2855         }
2856
2857         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2858             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2859                 os_snprintf(params, sizeof(params), " peer_go=%d",
2860                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2861         else
2862                 params[0] = '\0';
2863
2864         if (config_methods & WPS_CONFIG_DISPLAY)
2865                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2866         else if (config_methods & WPS_CONFIG_KEYPAD) {
2867                 generated_pin = wps_generate_pin();
2868                 wpas_prov_disc_local_display(wpa_s, peer, params,
2869                                              generated_pin);
2870         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2871                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2872                                MACSTR "%s", MAC2STR(peer), params);
2873
2874         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2875                                             P2P_PROV_DISC_SUCCESS,
2876                                             config_methods, generated_pin);
2877 }
2878
2879
2880 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2881                                 enum p2p_prov_disc_status status)
2882 {
2883         struct wpa_supplicant *wpa_s = ctx;
2884
2885         if (wpa_s->p2p_fallback_to_go_neg) {
2886                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2887                         "failed - fall back to GO Negotiation");
2888                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2889                 return;
2890         }
2891
2892         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2893                 wpa_s->pending_pd_before_join = 0;
2894                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2895                            "join-existing-group operation (no ACK for PD "
2896                            "Req attempts)");
2897                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2898                 return;
2899         }
2900
2901         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2902                        " p2p_dev_addr=" MACSTR " status=%d",
2903                        MAC2STR(peer), status);
2904
2905         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2906                                             status, 0, 0);
2907 }
2908
2909
2910 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2911 {
2912         if (channels == NULL)
2913                 return 1; /* Assume no restrictions */
2914         return p2p_channels_includes_freq(channels, freq);
2915
2916 }
2917
2918
2919 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2920                                   const u8 *go_dev_addr, const u8 *ssid,
2921                                   size_t ssid_len, int *go, u8 *group_bssid,
2922                                   int *force_freq, int persistent_group,
2923                                   const struct p2p_channels *channels,
2924                                   int dev_pw_id)
2925 {
2926         struct wpa_supplicant *wpa_s = ctx;
2927         struct wpa_ssid *s;
2928         int res;
2929         struct wpa_supplicant *grp;
2930
2931         if (!persistent_group) {
2932                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2933                            " to join an active group (SSID: %s)",
2934                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2935                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2936                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2937                      == 0 ||
2938                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2939                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2940                                    "authorized invitation");
2941                         goto accept_inv;
2942                 }
2943
2944 #ifdef CONFIG_WPS_NFC
2945                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
2946                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
2947                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2948                         wpa_s->parent->p2p_wps_method = WPS_NFC;
2949                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
2950                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
2951                                   go_dev_addr, ETH_ALEN);
2952                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
2953                                   bssid, ETH_ALEN);
2954                         goto accept_inv;
2955                 }
2956 #endif /* CONFIG_WPS_NFC */
2957
2958                 /*
2959                  * Do not accept the invitation automatically; notify user and
2960                  * request approval.
2961                  */
2962                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2963         }
2964
2965         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2966         if (grp) {
2967                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2968                            "running persistent group");
2969                 if (*go)
2970                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2971                 goto accept_inv;
2972         }
2973
2974         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2975             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2976                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2977                            "invitation to re-invoke a persistent group");
2978         } else if (!wpa_s->conf->persistent_reconnect)
2979                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2980
2981         for (s = wpa_s->conf->ssid; s; s = s->next) {
2982                 if (s->disabled == 2 &&
2983                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2984                     s->ssid_len == ssid_len &&
2985                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2986                         break;
2987         }
2988
2989         if (!s) {
2990                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2991                            " requested reinvocation of an unknown group",
2992                            MAC2STR(sa));
2993                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2994         }
2995
2996         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2997                 *go = 1;
2998                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2999                         wpa_printf(MSG_DEBUG, "P2P: The only available "
3000                                    "interface is already in use - reject "
3001                                    "invitation");
3002                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3003                 }
3004                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3005         } else if (s->mode == WPAS_MODE_P2P_GO) {
3006                 *go = 1;
3007                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3008                 {
3009                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3010                                    "interface address for the group");
3011                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3012                 }
3013                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3014                           ETH_ALEN);
3015         }
3016
3017 accept_inv:
3018         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3019
3020         /* Get one of the frequencies currently in use */
3021         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
3022                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3023                 wpas_p2p_set_own_freq_preference(wpa_s, res);
3024
3025                 if (wpa_s->num_multichan_concurrent < 2 ||
3026                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3027                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3028                         *force_freq = res;
3029                 }
3030         }
3031
3032         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3033             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3034                 if (*go == 0) {
3035                         /* We are the client */
3036                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3037                                    "running a GO but we are capable of MCC, "
3038                                    "figure out the best channel to use");
3039                         *force_freq = 0;
3040                 } else if (!freq_included(channels, *force_freq)) {
3041                         /* We are the GO, and *force_freq is not in the
3042                          * intersection */
3043                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3044                                    "in intersection but we are capable of MCC, "
3045                                    "figure out the best channel to use",
3046                                    *force_freq);
3047                         *force_freq = 0;
3048                 }
3049         }
3050
3051         return P2P_SC_SUCCESS;
3052 }
3053
3054
3055 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3056                                      const u8 *ssid, size_t ssid_len,
3057                                      const u8 *go_dev_addr, u8 status,
3058                                      int op_freq)
3059 {
3060         struct wpa_supplicant *wpa_s = ctx;
3061         struct wpa_ssid *s;
3062
3063         for (s = wpa_s->conf->ssid; s; s = s->next) {
3064                 if (s->disabled == 2 &&
3065                     s->ssid_len == ssid_len &&
3066                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3067                         break;
3068         }
3069
3070         if (status == P2P_SC_SUCCESS) {
3071                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3072                            " was accepted; op_freq=%d MHz, SSID=%s",
3073                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3074                 if (s) {
3075                         int go = s->mode == WPAS_MODE_P2P_GO;
3076                         wpas_p2p_group_add_persistent(
3077                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3078                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3079                 } else if (bssid) {
3080                         wpa_s->user_initiated_pd = 0;
3081                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3082                                       wpa_s->p2p_wps_method, 0, op_freq,
3083                                       ssid, ssid_len);
3084                 }
3085                 return;
3086         }
3087
3088         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3089                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3090                            " was rejected (status %u)", MAC2STR(sa), status);
3091                 return;
3092         }
3093
3094         if (!s) {
3095                 if (bssid) {
3096                         wpa_msg_global(wpa_s, MSG_INFO,
3097                                        P2P_EVENT_INVITATION_RECEIVED
3098                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3099                                        " bssid=" MACSTR " unknown-network",
3100                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3101                                        MAC2STR(bssid));
3102                 } else {
3103                         wpa_msg_global(wpa_s, MSG_INFO,
3104                                        P2P_EVENT_INVITATION_RECEIVED
3105                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3106                                        " unknown-network",
3107                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3108                 }
3109                 return;
3110         }
3111
3112         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3113                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3114                                "sa=" MACSTR " persistent=%d freq=%d",
3115                                MAC2STR(sa), s->id, op_freq);
3116         } else {
3117                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3118                                "sa=" MACSTR " persistent=%d",
3119                                MAC2STR(sa), s->id);
3120         }
3121 }
3122
3123
3124 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3125                                         struct wpa_ssid *ssid,
3126                                         const u8 *peer, int inv)
3127 {
3128         size_t i;
3129
3130         if (ssid == NULL)
3131                 return;
3132
3133         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3134                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3135                               ETH_ALEN) == 0)
3136                         break;
3137         }
3138         if (i >= ssid->num_p2p_clients) {
3139                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3140                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3141                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3142                                    "due to invitation result", ssid->id);
3143                         wpas_notify_network_removed(wpa_s, ssid);
3144                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3145                         return;
3146                 }
3147                 return; /* Peer not found in client list */
3148         }
3149
3150         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3151                    "group %d client list%s",
3152                    MAC2STR(peer), ssid->id,
3153                    inv ? " due to invitation result" : "");
3154         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3155                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3156                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3157         ssid->num_p2p_clients--;
3158         if (wpa_s->parent->conf->update_config &&
3159             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3160                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3161 }
3162
3163
3164 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3165                                           const u8 *peer)
3166 {
3167         struct wpa_ssid *ssid;
3168
3169         wpa_s = wpa_s->global->p2p_invite_group;
3170         if (wpa_s == NULL)
3171                 return; /* No known invitation group */
3172         ssid = wpa_s->current_ssid;
3173         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3174             !ssid->p2p_persistent_group)
3175                 return; /* Not operating as a GO in persistent group */
3176         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3177                                        ssid->ssid, ssid->ssid_len);
3178         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3179 }
3180
3181
3182 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3183                                    const struct p2p_channels *channels,
3184                                    const u8 *peer, int neg_freq,
3185                                    int peer_oper_freq)
3186 {
3187         struct wpa_supplicant *wpa_s = ctx;
3188         struct wpa_ssid *ssid;
3189         int freq;
3190
3191         if (bssid) {
3192                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3193                                "status=%d " MACSTR,
3194                                status, MAC2STR(bssid));
3195         } else {
3196                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3197                                "status=%d ", status);
3198         }
3199         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3200
3201         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3202                    status, MAC2STR(peer));
3203         if (wpa_s->pending_invite_ssid_id == -1) {
3204                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3205                         wpas_remove_persistent_client(wpa_s, peer);
3206                 return; /* Invitation to active group */
3207         }
3208
3209         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3210                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3211                            "invitation exchange to indicate readiness for "
3212                            "re-invocation");
3213         }
3214
3215         if (status != P2P_SC_SUCCESS) {
3216                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3217                         ssid = wpa_config_get_network(
3218                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3219                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3220                 }
3221                 wpas_p2p_remove_pending_group_interface(wpa_s);
3222                 return;
3223         }
3224
3225         ssid = wpa_config_get_network(wpa_s->conf,
3226                                       wpa_s->pending_invite_ssid_id);
3227         if (ssid == NULL) {
3228                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3229                            "data matching with invitation");
3230                 return;
3231         }
3232
3233         /*
3234          * The peer could have missed our ctrl::ack frame for Invitation
3235          * Response and continue retransmitting the frame. To reduce the
3236          * likelihood of the peer not getting successful TX status for the
3237          * Invitation Response frame, wait a short time here before starting
3238          * the persistent group so that we will remain on the current channel to
3239          * acknowledge any possible retransmission from the peer.
3240          */
3241         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3242                 "starting persistent group");
3243         os_sleep(0, 50000);
3244
3245         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3246             freq_included(channels, neg_freq))
3247                 freq = neg_freq;
3248         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3249                  freq_included(channels, peer_oper_freq))
3250                 freq = peer_oper_freq;
3251         else
3252                 freq = 0;
3253
3254         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3255                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3256         wpas_p2p_group_add_persistent(wpa_s, ssid,
3257                                       ssid->mode == WPAS_MODE_P2P_GO,
3258                                       wpa_s->p2p_persistent_go_freq,
3259                                       freq,
3260                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3261                                       channels,
3262                                       ssid->mode == WPAS_MODE_P2P_GO ?
3263                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3264                                       0);
3265 }
3266
3267
3268 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3269                                     unsigned int freq)
3270 {
3271         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3272                 return 1;
3273         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3274 }
3275
3276
3277 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3278 {
3279         reg->channel[reg->channels] = chan;
3280         reg->channels++;
3281 }
3282
3283
3284 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3285                                      struct p2p_channels *chan,
3286                                      struct p2p_channels *cli_chan)
3287 {
3288         int i, cla = 0;
3289
3290         os_memset(cli_chan, 0, sizeof(*cli_chan));
3291
3292         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3293                    "band");
3294
3295         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3296         chan->reg_class[cla].reg_class = 81;
3297         chan->reg_class[cla].channels = 0;
3298         for (i = 0; i < 11; i++) {
3299                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3300                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3301         }
3302         if (chan->reg_class[cla].channels)
3303                 cla++;
3304
3305         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3306                    "band");
3307
3308         /* Operating class 115 - 5 GHz, channels 36-48 */
3309         chan->reg_class[cla].reg_class = 115;
3310         chan->reg_class[cla].channels = 0;
3311         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3312                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3313         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3314                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3315         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3316                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3317         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3318                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3319         if (chan->reg_class[cla].channels)
3320                 cla++;
3321
3322         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3323                    "band");
3324
3325         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3326         chan->reg_class[cla].reg_class = 124;
3327         chan->reg_class[cla].channels = 0;
3328         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3329                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3330         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3331                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3332         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3333                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3334         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3335                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3336         if (chan->reg_class[cla].channels)
3337                 cla++;
3338
3339         chan->reg_classes = cla;
3340         return 0;
3341 }
3342
3343
3344 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3345                                           u16 num_modes,
3346                                           enum hostapd_hw_mode mode)
3347 {
3348         u16 i;
3349
3350         for (i = 0; i < num_modes; i++) {
3351                 if (modes[i].mode == mode)
3352                         return &modes[i];
3353         }
3354
3355         return NULL;
3356 }
3357
3358
3359 enum chan_allowed {
3360         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3361 };
3362
3363 static int has_channel(struct wpa_global *global,
3364                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3365 {
3366         int i;
3367         unsigned int freq;
3368
3369         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3370                 chan * 5;
3371         if (wpas_p2p_disallowed_freq(global, freq))
3372                 return NOT_ALLOWED;
3373
3374         for (i = 0; i < mode->num_channels; i++) {
3375                 if (mode->channels[i].chan == chan) {
3376                         if (flags)
3377                                 *flags = mode->channels[i].flag;
3378                         if (mode->channels[i].flag &
3379                             (HOSTAPD_CHAN_DISABLED |
3380                              HOSTAPD_CHAN_RADAR))
3381                                 return NOT_ALLOWED;
3382                         if (mode->channels[i].flag &
3383                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3384                              HOSTAPD_CHAN_NO_IBSS))
3385                                 return PASSIVE_ONLY;
3386                         return ALLOWED;
3387                 }
3388         }
3389
3390         return NOT_ALLOWED;
3391 }
3392
3393
3394 struct p2p_oper_class_map {
3395         enum hostapd_hw_mode mode;
3396         u8 op_class;
3397         u8 min_chan;
3398         u8 max_chan;
3399         u8 inc;
3400         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3401 };
3402
3403 static struct p2p_oper_class_map op_class[] = {
3404         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3405 #if 0 /* Do not enable HT40 on 2 GHz for now */
3406         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3407         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3408 #endif
3409         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3410         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3411         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3412         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3413         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3414         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3415
3416         /*
3417          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3418          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3419          * 80 MHz, but currently use the following definition for simplicity
3420          * (these center frequencies are not actual channels, which makes
3421          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3422          * removing invalid channels.
3423          */
3424         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3425         { -1, 0, 0, 0, 0, BW20 }
3426 };
3427
3428
3429 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3430                                      struct hostapd_hw_modes *mode,
3431                                      u8 channel)
3432 {
3433         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3434         unsigned int i;
3435
3436         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3437                 return 0;
3438
3439         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3440                 /*
3441                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3442                  * so the center channel is 6 channels away from the start/end.
3443                  */
3444                 if (channel >= center_channels[i] - 6 &&
3445                     channel <= center_channels[i] + 6)
3446                         return center_channels[i];
3447
3448         return 0;
3449 }
3450
3451
3452 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3453                                                struct hostapd_hw_modes *mode,
3454                                                u8 channel, u8 bw)
3455 {
3456         u8 center_chan;
3457         int i, flags;
3458         enum chan_allowed res, ret = ALLOWED;
3459
3460         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3461         if (!center_chan)
3462                 return NOT_ALLOWED;
3463         if (center_chan >= 58 && center_chan <= 138)
3464                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3465
3466         /* check all the channels are available */
3467         for (i = 0; i < 4; i++) {
3468                 int adj_chan = center_chan - 6 + i * 4;
3469
3470                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3471                 if (res == NOT_ALLOWED)
3472                         return NOT_ALLOWED;
3473                 if (res == PASSIVE_ONLY)
3474                         ret = PASSIVE_ONLY;
3475
3476                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3477                         return NOT_ALLOWED;
3478                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3479                         return NOT_ALLOWED;
3480                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3481                         return NOT_ALLOWED;
3482                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3483                         return NOT_ALLOWED;
3484         }
3485
3486         return ret;
3487 }
3488
3489
3490 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3491                                                  struct hostapd_hw_modes *mode,
3492                                                  u8 channel, u8 bw)
3493 {
3494         int flag = 0;
3495         enum chan_allowed res, res2;
3496
3497         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3498         if (bw == BW40MINUS) {
3499                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3500                         return NOT_ALLOWED;
3501                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3502         } else if (bw == BW40PLUS) {
3503                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3504                         return NOT_ALLOWED;
3505                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3506         } else if (bw == BW80) {
3507                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3508         }
3509
3510         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3511                 return NOT_ALLOWED;
3512         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3513                 return PASSIVE_ONLY;
3514         return res;
3515 }
3516
3517
3518 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3519                                    struct p2p_channels *chan,
3520                                    struct p2p_channels *cli_chan)
3521 {
3522         struct hostapd_hw_modes *mode;
3523         int cla, op, cli_cla;
3524
3525         if (wpa_s->hw.modes == NULL) {
3526                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3527                            "of all supported channels; assume dualband "
3528                            "support");
3529                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3530         }
3531
3532         cla = cli_cla = 0;
3533
3534         for (op = 0; op_class[op].op_class; op++) {
3535                 struct p2p_oper_class_map *o = &op_class[op];
3536                 u8 ch;
3537                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3538
3539                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3540                 if (mode == NULL)
3541                         continue;
3542                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3543                         enum chan_allowed res;
3544                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3545                         if (res == ALLOWED) {
3546                                 if (reg == NULL) {
3547                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3548                                                    o->op_class);
3549                                         reg = &chan->reg_class[cla];
3550                                         cla++;
3551                                         reg->reg_class = o->op_class;
3552                                 }
3553                                 reg->channel[reg->channels] = ch;
3554                                 reg->channels++;
3555                         } else if (res == PASSIVE_ONLY &&
3556                                    wpa_s->conf->p2p_add_cli_chan) {
3557                                 if (cli_reg == NULL) {
3558                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3559                                                    o->op_class);
3560                                         cli_reg = &cli_chan->reg_class[cli_cla];
3561                                         cli_cla++;
3562                                         cli_reg->reg_class = o->op_class;
3563                                 }
3564                                 cli_reg->channel[cli_reg->channels] = ch;
3565                                 cli_reg->channels++;
3566                         }
3567                 }
3568                 if (reg) {
3569                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3570                                     reg->channel, reg->channels);
3571                 }
3572                 if (cli_reg) {
3573                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3574                                     cli_reg->channel, cli_reg->channels);
3575                 }
3576         }
3577
3578         chan->reg_classes = cla;
3579         cli_chan->reg_classes = cli_cla;
3580
3581         return 0;
3582 }
3583
3584
3585 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3586                            struct hostapd_hw_modes *mode, u8 channel)
3587 {
3588         int op;
3589         enum chan_allowed ret;
3590
3591         for (op = 0; op_class[op].op_class; op++) {
3592                 struct p2p_oper_class_map *o = &op_class[op];
3593                 u8 ch;
3594
3595                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3596                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3597                             o->bw == BW20 || ch != channel)
3598                                 continue;
3599                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3600                         if (ret == ALLOWED)
3601                                 return (o->bw == BW40MINUS) ? -1 : 1;
3602                 }
3603         }
3604         return 0;
3605 }
3606
3607
3608 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3609                               struct hostapd_hw_modes *mode, u8 channel)
3610 {
3611         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3612                 return 0;
3613
3614         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3615 }
3616
3617
3618 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3619                         size_t buf_len)
3620 {
3621         struct wpa_supplicant *wpa_s = ctx;
3622
3623         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3624                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3625                         break;
3626         }
3627         if (wpa_s == NULL)
3628                 return -1;
3629
3630         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3631 }
3632
3633
3634 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3635 {
3636         struct wpa_supplicant *wpa_s = ctx;
3637
3638         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3639                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3640                 if (ssid == NULL)
3641                         continue;
3642                 if (ssid->mode != WPAS_MODE_INFRA)
3643                         continue;
3644                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3645                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3646                         continue;
3647                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3648                         return 1;
3649         }
3650
3651         return 0;
3652 }
3653
3654
3655 static int wpas_is_concurrent_session_active(void *ctx)
3656 {
3657         struct wpa_supplicant *wpa_s = ctx;
3658         struct wpa_supplicant *ifs;
3659
3660         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3661                 if (ifs == wpa_s)
3662                         continue;
3663                 if (ifs->wpa_state > WPA_ASSOCIATED)
3664                         return 1;
3665         }
3666         return 0;
3667 }
3668
3669
3670 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3671 {
3672         struct wpa_supplicant *wpa_s = ctx;
3673         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3674 }
3675
3676
3677 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3678 {
3679         struct wpa_interface iface;
3680         struct wpa_supplicant *p2pdev_wpa_s;
3681         char ifname[100];
3682         char force_name[100];
3683         int ret;
3684
3685         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3686                     wpa_s->ifname);
3687         force_name[0] = '\0';
3688         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3689         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3690                              force_name, wpa_s->pending_interface_addr, NULL);
3691         if (ret < 0) {
3692                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3693                 return ret;
3694         }
3695         os_strlcpy(wpa_s->pending_interface_name, ifname,
3696                    sizeof(wpa_s->pending_interface_name));
3697
3698         os_memset(&iface, 0, sizeof(iface));
3699         iface.p2p_mgmt = 1;
3700         iface.ifname = wpa_s->pending_interface_name;
3701         iface.driver = wpa_s->driver->name;
3702         iface.driver_param = wpa_s->conf->driver_param;
3703
3704         /*
3705          * If a P2P Device configuration file was given, use it as the interface
3706          * configuration file (instead of using parent's configuration file.
3707          */
3708         if (wpa_s->conf_p2p_dev) {
3709                 iface.confname = wpa_s->conf_p2p_dev;
3710                 iface.ctrl_interface = NULL;
3711         } else {
3712                 iface.confname = wpa_s->confname;
3713                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3714         }
3715         iface.conf_p2p_dev = NULL;
3716
3717         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3718         if (!p2pdev_wpa_s) {
3719                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3720                 return -1;
3721         }
3722         p2pdev_wpa_s->parent = wpa_s;
3723
3724         wpa_s->pending_interface_name[0] = '\0';
3725         return 0;
3726 }
3727
3728
3729 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3730                                const u8 *noa, size_t noa_len)
3731 {
3732         struct wpa_supplicant *wpa_s, *intf = ctx;
3733         char hex[100];
3734
3735         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3736                 if (wpa_s->waiting_presence_resp)
3737                         break;
3738         }
3739         if (!wpa_s) {
3740                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3741                 return;
3742         }
3743         wpa_s->waiting_presence_resp = 0;
3744
3745         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3746         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3747                 " status=%u noa=%s", MAC2STR(src), status, hex);
3748 }
3749
3750
3751 /**
3752  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3753  * @global: Pointer to global data from wpa_supplicant_init()
3754  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3755  * Returns: 0 on success, -1 on failure
3756  */
3757 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3758 {
3759         struct p2p_config p2p;
3760         unsigned int r;
3761         int i;
3762
3763         if (wpa_s->conf->p2p_disabled)
3764                 return 0;
3765
3766         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3767                 return 0;
3768
3769         if (global->p2p)
3770                 return 0;
3771
3772         os_memset(&p2p, 0, sizeof(p2p));
3773         p2p.cb_ctx = wpa_s;
3774         p2p.debug_print = wpas_p2p_debug_print;
3775         p2p.p2p_scan = wpas_p2p_scan;
3776         p2p.send_action = wpas_send_action;
3777         p2p.send_action_done = wpas_send_action_done;
3778         p2p.go_neg_completed = wpas_go_neg_completed;
3779         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3780         p2p.dev_found = wpas_dev_found;
3781         p2p.dev_lost = wpas_dev_lost;
3782         p2p.find_stopped = wpas_find_stopped;
3783         p2p.start_listen = wpas_start_listen;
3784         p2p.stop_listen = wpas_stop_listen;
3785         p2p.send_probe_resp = wpas_send_probe_resp;
3786         p2p.sd_request = wpas_sd_request;
3787         p2p.sd_response = wpas_sd_response;
3788         p2p.prov_disc_req = wpas_prov_disc_req;
3789         p2p.prov_disc_resp = wpas_prov_disc_resp;
3790         p2p.prov_disc_fail = wpas_prov_disc_fail;
3791         p2p.invitation_process = wpas_invitation_process;
3792         p2p.invitation_received = wpas_invitation_received;
3793         p2p.invitation_result = wpas_invitation_result;
3794         p2p.get_noa = wpas_get_noa;
3795         p2p.go_connected = wpas_go_connected;
3796         p2p.presence_resp = wpas_presence_resp;
3797         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3798
3799         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3800         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3801         p2p.dev_name = wpa_s->conf->device_name;
3802         p2p.manufacturer = wpa_s->conf->manufacturer;
3803         p2p.model_name = wpa_s->conf->model_name;
3804         p2p.model_number = wpa_s->conf->model_number;
3805         p2p.serial_number = wpa_s->conf->serial_number;
3806         if (wpa_s->wps) {
3807                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3808                 p2p.config_methods = wpa_s->wps->config_methods;
3809         }
3810
3811         if (wpa_s->conf->p2p_listen_reg_class &&
3812             wpa_s->conf->p2p_listen_channel) {
3813                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3814                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3815         } else {
3816                 p2p.reg_class = 81;
3817                 /*
3818                  * Pick one of the social channels randomly as the listen
3819                  * channel.
3820                  */
3821                 os_get_random((u8 *) &r, sizeof(r));
3822                 p2p.channel = 1 + (r % 3) * 5;
3823         }
3824         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3825
3826         if (wpa_s->conf->p2p_oper_reg_class &&
3827             wpa_s->conf->p2p_oper_channel) {
3828                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3829                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3830                 p2p.cfg_op_channel = 1;
3831                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3832                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3833
3834         } else {
3835                 p2p.op_reg_class = 81;
3836                 /*
3837                  * Use random operation channel from (1, 6, 11) if no other
3838                  * preference is indicated.
3839                  */
3840                 os_get_random((u8 *) &r, sizeof(r));
3841                 p2p.op_channel = 1 + (r % 3) * 5;
3842                 p2p.cfg_op_channel = 0;
3843                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3844                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3845         }
3846
3847         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3848                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3849                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3850         }
3851
3852         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3853                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3854                 p2p.country[2] = 0x04;
3855         } else
3856                 os_memcpy(p2p.country, "XX\x04", 3);
3857
3858         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3859                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3860                            "channel list");
3861                 return -1;
3862         }
3863
3864         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3865                   WPS_DEV_TYPE_LEN);
3866
3867         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3868         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3869                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3870
3871         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3872                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3873
3874         p2p.max_peers = 100;
3875
3876         if (wpa_s->conf->p2p_ssid_postfix) {
3877                 p2p.ssid_postfix_len =
3878                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3879                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3880                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3881                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3882                           p2p.ssid_postfix_len);
3883         }
3884
3885         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3886
3887         p2p.max_listen = wpa_s->max_remain_on_chan;
3888
3889         global->p2p = p2p_init(&p2p);
3890         if (global->p2p == NULL)
3891                 return -1;
3892         global->p2p_init_wpa_s = wpa_s;
3893
3894         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3895                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3896                         continue;
3897                 p2p_add_wps_vendor_extension(
3898                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3899         }
3900
3901         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3902
3903         return 0;
3904 }
3905
3906
3907 /**
3908  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3909  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3910  *
3911  * This function deinitialize per-interface P2P data.
3912  */
3913 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3914 {
3915         if (wpa_s->driver && wpa_s->drv_priv)
3916                 wpa_drv_probe_req_report(wpa_s, 0);
3917
3918         if (wpa_s->go_params) {
3919                 /* Clear any stored provisioning info */
3920                 p2p_clear_provisioning_info(
3921                         wpa_s->global->p2p,
3922                         wpa_s->go_params->peer_device_addr);
3923         }
3924
3925         os_free(wpa_s->go_params);
3926         wpa_s->go_params = NULL;
3927         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3928         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3929         wpa_s->p2p_long_listen = 0;
3930         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3931         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3932         wpas_p2p_remove_pending_group_interface(wpa_s);
3933         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3934         wpas_p2p_listen_work_done(wpa_s);
3935         if (wpa_s->p2p_send_action_work) {
3936                 os_free(wpa_s->p2p_send_action_work->ctx);
3937                 radio_work_done(wpa_s->p2p_send_action_work);
3938                 wpa_s->p2p_send_action_work = NULL;
3939         }
3940         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3941
3942         wpabuf_free(wpa_s->p2p_oob_dev_pw);
3943         wpa_s->p2p_oob_dev_pw = NULL;
3944
3945         /* TODO: remove group interface from the driver if this wpa_s instance
3946          * is on top of a P2P group interface */
3947 }
3948
3949
3950 /**
3951  * wpas_p2p_deinit_global - Deinitialize global P2P module
3952  * @global: Pointer to global data from wpa_supplicant_init()
3953  *
3954  * This function deinitializes the global (per device) P2P module.
3955  */
3956 void wpas_p2p_deinit_global(struct wpa_global *global)
3957 {
3958         struct wpa_supplicant *wpa_s, *tmp;
3959
3960         wpa_s = global->ifaces;
3961         if (wpa_s)
3962                 wpas_p2p_service_flush(wpa_s);
3963
3964         if (global->p2p == NULL)
3965                 return;
3966
3967         /* Remove remaining P2P group interfaces */
3968         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3969                 wpa_s = wpa_s->next;
3970         while (wpa_s) {
3971                 tmp = global->ifaces;
3972                 while (tmp &&
3973                        (tmp == wpa_s ||
3974                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3975                         tmp = tmp->next;
3976                 }
3977                 if (tmp == NULL)
3978                         break;
3979                 /* Disconnect from the P2P group and deinit the interface */
3980                 wpas_p2p_disconnect(tmp);
3981         }
3982
3983         /*
3984          * Deinit GO data on any possibly remaining interface (if main
3985          * interface is used as GO).
3986          */
3987         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3988                 if (wpa_s->ap_iface)
3989                         wpas_p2p_group_deinit(wpa_s);
3990         }
3991
3992         p2p_deinit(global->p2p);
3993         global->p2p = NULL;
3994         global->p2p_init_wpa_s = NULL;
3995 }
3996
3997
3998 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3999 {
4000         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4001             wpa_s->conf->p2p_no_group_iface)
4002                 return 0; /* separate interface disabled per configuration */
4003         if (wpa_s->drv_flags &
4004             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4005              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4006                 return 1; /* P2P group requires a new interface in every case
4007                            */
4008         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4009                 return 0; /* driver does not support concurrent operations */
4010         if (wpa_s->global->ifaces->next)
4011                 return 1; /* more that one interface already in use */
4012         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4013                 return 1; /* this interface is already in use */
4014         return 0;
4015 }
4016
4017
4018 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4019                                  const u8 *peer_addr,
4020                                  enum p2p_wps_method wps_method,
4021                                  int go_intent, const u8 *own_interface_addr,
4022                                  unsigned int force_freq, int persistent_group,
4023                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4024 {
4025         if (persistent_group && wpa_s->conf->persistent_reconnect)
4026                 persistent_group = 2;
4027
4028         /*
4029          * Increase GO config timeout if HT40 is used since it takes some time
4030          * to scan channels for coex purposes before the BSS can be started.
4031          */
4032         p2p_set_config_timeout(wpa_s->global->p2p,
4033                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4034
4035         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4036                            go_intent, own_interface_addr, force_freq,
4037                            persistent_group, ssid ? ssid->ssid : NULL,
4038                            ssid ? ssid->ssid_len : 0,
4039                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4040                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4041                            0);
4042 }
4043
4044
4045 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4046                                 const u8 *peer_addr,
4047                                 enum p2p_wps_method wps_method,
4048                                 int go_intent, const u8 *own_interface_addr,
4049                                 unsigned int force_freq, int persistent_group,
4050                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4051 {
4052         if (persistent_group && wpa_s->conf->persistent_reconnect)
4053                 persistent_group = 2;
4054
4055         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4056                              go_intent, own_interface_addr, force_freq,
4057                              persistent_group, ssid ? ssid->ssid : NULL,
4058                              ssid ? ssid->ssid_len : 0, pref_freq,
4059                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4060                              0);
4061 }
4062
4063
4064 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4065 {
4066         wpa_s->p2p_join_scan_count++;
4067         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4068                    wpa_s->p2p_join_scan_count);
4069         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4070                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4071                            " for join operationg - stop join attempt",
4072                            MAC2STR(wpa_s->pending_join_iface_addr));
4073                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4074                 if (wpa_s->p2p_auto_pd) {
4075                         wpa_s->p2p_auto_pd = 0;
4076                         wpa_msg_global(wpa_s, MSG_INFO,
4077                                        P2P_EVENT_PROV_DISC_FAILURE
4078                                        " p2p_dev_addr=" MACSTR " status=N/A",
4079                                        MAC2STR(wpa_s->pending_join_dev_addr));
4080                         return;
4081                 }
4082                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4083                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4084         }
4085 }
4086
4087
4088 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4089 {
4090         int *freqs, res, num, i;
4091
4092         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4093                 /* Multiple channels are supported and not all are in use */
4094                 return 0;
4095         }
4096
4097         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4098         if (!freqs)
4099                 return 1;
4100
4101         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4102                                         wpa_s->num_multichan_concurrent);
4103         if (num < 0) {
4104                 res = 1;
4105                 goto exit_free;
4106         }
4107
4108         for (i = 0; i < num; i++) {
4109                 if (freqs[i] == freq) {
4110                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4111                                    freq);
4112                         res = 0;
4113                         goto exit_free;
4114                 }
4115         }
4116
4117         res = 1;
4118
4119 exit_free:
4120         os_free(freqs);
4121         return res;
4122 }
4123
4124
4125 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4126                             const u8 *peer_dev_addr)
4127 {
4128         struct wpa_bss *bss;
4129         int updated;
4130
4131         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4132         if (bss == NULL)
4133                 return -1;
4134         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4135                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4136                            "last scan");
4137                 return 0;
4138         }
4139
4140         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4141                                     &bss->last_update);
4142         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4143                    "%ld.%06ld (%supdated in last scan)",
4144                    bss->last_update.sec, bss->last_update.usec,
4145                    updated ? "": "not ");
4146
4147         return updated;
4148 }
4149
4150
4151 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4152                                    struct wpa_scan_results *scan_res)
4153 {
4154         struct wpa_bss *bss = NULL;
4155         int freq;
4156         u8 iface_addr[ETH_ALEN];
4157
4158         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4159
4160         if (wpa_s->global->p2p_disabled)
4161                 return;
4162
4163         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4164                    scan_res ? (int) scan_res->num : -1,
4165                    wpa_s->p2p_auto_join ? "auto_" : "");
4166
4167         if (scan_res)
4168                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4169
4170         if (wpa_s->p2p_auto_pd) {
4171                 int join = wpas_p2p_peer_go(wpa_s,
4172                                             wpa_s->pending_join_dev_addr);
4173                 if (join == 0 &&
4174                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4175                         wpa_s->auto_pd_scan_retry++;
4176                         bss = wpa_bss_get_bssid_latest(
4177                                 wpa_s, wpa_s->pending_join_dev_addr);
4178                         if (bss) {
4179                                 freq = bss->freq;
4180                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4181                                            "the peer " MACSTR " at %d MHz",
4182                                            wpa_s->auto_pd_scan_retry,
4183                                            MAC2STR(wpa_s->
4184                                                    pending_join_dev_addr),
4185                                            freq);
4186                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4187                                 return;
4188                         }
4189                 }
4190
4191                 if (join < 0)
4192                         join = 0;
4193
4194                 wpa_s->p2p_auto_pd = 0;
4195                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4196                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4197                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4198                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4199                                       wpa_s->pending_join_dev_addr,
4200                                       wpa_s->pending_pd_config_methods, join,
4201                                       0, wpa_s->user_initiated_pd) < 0) {
4202                         wpa_s->p2p_auto_pd = 0;
4203                         wpa_msg_global(wpa_s, MSG_INFO,
4204                                        P2P_EVENT_PROV_DISC_FAILURE
4205                                        " p2p_dev_addr=" MACSTR " status=N/A",
4206                                        MAC2STR(wpa_s->pending_join_dev_addr));
4207                 }
4208                 return;
4209         }
4210
4211         if (wpa_s->p2p_auto_join) {
4212                 int join = wpas_p2p_peer_go(wpa_s,
4213                                             wpa_s->pending_join_dev_addr);
4214                 if (join < 0) {
4215                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4216                                    "running a GO -> use GO Negotiation");
4217                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4218                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4219                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4220                                          wpa_s->p2p_go_intent,
4221                                          wpa_s->p2p_connect_freq,
4222                                          wpa_s->p2p_persistent_id,
4223                                          wpa_s->p2p_pd_before_go_neg,
4224                                          wpa_s->p2p_go_ht40,
4225                                          wpa_s->p2p_go_vht);
4226                         return;
4227                 }
4228
4229                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4230                            "try to join the group", join ? "" :
4231                            " in older scan");
4232                 if (!join)
4233                         wpa_s->p2p_fallback_to_go_neg = 1;
4234         }
4235
4236         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4237                                  wpa_s->pending_join_iface_addr);
4238         if (freq < 0 &&
4239             p2p_get_interface_addr(wpa_s->global->p2p,
4240                                    wpa_s->pending_join_dev_addr,
4241                                    iface_addr) == 0 &&
4242             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4243         {
4244                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4245                            "address for join from " MACSTR " to " MACSTR
4246                            " based on newly discovered P2P peer entry",
4247                            MAC2STR(wpa_s->pending_join_iface_addr),
4248                            MAC2STR(iface_addr));
4249                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4250                           ETH_ALEN);
4251
4252                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4253                                          wpa_s->pending_join_iface_addr);
4254         }
4255         if (freq >= 0) {
4256                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4257                            "from P2P peer table: %d MHz", freq);
4258         }
4259         if (wpa_s->p2p_join_ssid_len) {
4260                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4261                            MACSTR " and SSID %s",
4262                            MAC2STR(wpa_s->pending_join_iface_addr),
4263                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4264                                         wpa_s->p2p_join_ssid_len));
4265                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4266                                   wpa_s->p2p_join_ssid,
4267                                   wpa_s->p2p_join_ssid_len);
4268         }
4269         if (!bss) {
4270                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4271                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4272                 bss = wpa_bss_get_bssid_latest(wpa_s,
4273                                                wpa_s->pending_join_iface_addr);
4274         }
4275         if (bss) {
4276                 freq = bss->freq;
4277                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4278                            "from BSS table: %d MHz (SSID %s)", freq,
4279                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4280         }
4281         if (freq > 0) {
4282                 u16 method;
4283
4284                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4285                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4286                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4287                                        "reason=FREQ_CONFLICT");
4288                         return;
4289                 }
4290
4291                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4292                            "prior to joining an existing group (GO " MACSTR
4293                            " freq=%u MHz)",
4294                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4295                 wpa_s->pending_pd_before_join = 1;
4296
4297                 switch (wpa_s->pending_join_wps_method) {
4298                 case WPS_PIN_DISPLAY:
4299                         method = WPS_CONFIG_KEYPAD;
4300                         break;
4301                 case WPS_PIN_KEYPAD:
4302                         method = WPS_CONFIG_DISPLAY;
4303                         break;
4304                 case WPS_PBC:
4305                         method = WPS_CONFIG_PUSHBUTTON;
4306                         break;
4307                 default:
4308                         method = 0;
4309                         break;
4310                 }
4311
4312                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4313                                                wpa_s->pending_join_dev_addr) ==
4314                      method)) {
4315                         /*
4316                          * We have already performed provision discovery for
4317                          * joining the group. Proceed directly to join
4318                          * operation without duplicated provision discovery. */
4319                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4320                                    "with " MACSTR " already done - proceed to "
4321                                    "join",
4322                                    MAC2STR(wpa_s->pending_join_dev_addr));
4323                         wpa_s->pending_pd_before_join = 0;
4324                         goto start;
4325                 }
4326
4327                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4328                                       wpa_s->pending_join_dev_addr, method, 1,
4329                                       freq, wpa_s->user_initiated_pd) < 0) {
4330                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4331                                    "Discovery Request before joining an "
4332                                    "existing group");
4333                         wpa_s->pending_pd_before_join = 0;
4334                         goto start;
4335                 }
4336                 return;
4337         }
4338
4339         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4340         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4341         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4342         wpas_p2p_check_join_scan_limit(wpa_s);
4343         return;
4344
4345 start:
4346         /* Start join operation immediately */
4347         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4348 }
4349
4350
4351 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4352                                    const u8 *ssid, size_t ssid_len)
4353 {
4354         int ret;
4355         struct wpa_driver_scan_params params;
4356         struct wpabuf *wps_ie, *ies;
4357         size_t ielen;
4358         int freqs[2] = { 0, 0 };
4359
4360         os_memset(&params, 0, sizeof(params));
4361
4362         /* P2P Wildcard SSID */
4363         params.num_ssids = 1;
4364         if (ssid && ssid_len) {
4365                 params.ssids[0].ssid = ssid;
4366                 params.ssids[0].ssid_len = ssid_len;
4367                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4368                 wpa_s->p2p_join_ssid_len = ssid_len;
4369         } else {
4370                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4371                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4372                 wpa_s->p2p_join_ssid_len = 0;
4373         }
4374
4375         wpa_s->wps->dev.p2p = 1;
4376         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4377                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4378                                         NULL);
4379         if (wps_ie == NULL) {
4380                 wpas_p2p_scan_res_join(wpa_s, NULL);
4381                 return;
4382         }
4383
4384         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4385         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4386         if (ies == NULL) {
4387                 wpabuf_free(wps_ie);
4388                 wpas_p2p_scan_res_join(wpa_s, NULL);
4389                 return;
4390         }
4391         wpabuf_put_buf(ies, wps_ie);
4392         wpabuf_free(wps_ie);
4393
4394         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4395
4396         params.p2p_probe = 1;
4397         params.extra_ies = wpabuf_head(ies);
4398         params.extra_ies_len = wpabuf_len(ies);
4399
4400         if (!freq) {
4401                 int oper_freq;
4402                 /*
4403                  * If freq is not provided, check the operating freq of the GO
4404                  * and use a single channel scan on if possible.
4405                  */
4406                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4407                                               wpa_s->pending_join_iface_addr);
4408                 if (oper_freq > 0)
4409                         freq = oper_freq;
4410         }
4411         if (freq > 0) {
4412                 freqs[0] = freq;
4413                 params.freqs = freqs;
4414         }
4415
4416         /*
4417          * Run a scan to update BSS table and start Provision Discovery once
4418          * the new scan results become available.
4419          */
4420         ret = wpa_drv_scan(wpa_s, &params);
4421         if (!ret) {
4422                 os_get_reltime(&wpa_s->scan_trigger_time);
4423                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4424                 wpa_s->own_scan_requested = 1;
4425         }
4426
4427         wpabuf_free(ies);
4428
4429         if (ret) {
4430                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4431                            "try again later");
4432                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4433                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4434                 wpas_p2p_check_join_scan_limit(wpa_s);
4435         }
4436 }
4437
4438
4439 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4440 {
4441         struct wpa_supplicant *wpa_s = eloop_ctx;
4442         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4443 }
4444
4445
4446 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4447                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4448                          int auto_join, int op_freq,
4449                          const u8 *ssid, size_t ssid_len)
4450 {
4451         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4452                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4453                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4454                    auto_join ? " (auto_join)" : "");
4455         if (ssid && ssid_len) {
4456                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4457                            wpa_ssid_txt(ssid, ssid_len));
4458         }
4459
4460         wpa_s->p2p_auto_pd = 0;
4461         wpa_s->p2p_auto_join = !!auto_join;
4462         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4463         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4464         wpa_s->pending_join_wps_method = wps_method;
4465
4466         /* Make sure we are not running find during connection establishment */
4467         wpas_p2p_stop_find(wpa_s);
4468
4469         wpa_s->p2p_join_scan_count = 0;
4470         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4471         return 0;
4472 }
4473
4474
4475 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4476                                const u8 *ssid, size_t ssid_len)
4477 {
4478         struct wpa_supplicant *group;
4479         struct p2p_go_neg_results res;
4480         struct wpa_bss *bss;
4481
4482         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4483         if (group == NULL)
4484                 return -1;
4485         if (group != wpa_s) {
4486                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4487                           sizeof(group->p2p_pin));
4488                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4489         } else {
4490                 /*
4491                  * Need to mark the current interface for p2p_group_formation
4492                  * when a separate group interface is not used. This is needed
4493                  * to allow p2p_cancel stop a pending p2p_connect-join.
4494                  * wpas_p2p_init_group_interface() addresses this for the case
4495                  * where a separate group interface is used.
4496                  */
4497                 wpa_s->global->p2p_group_formation = wpa_s;
4498         }
4499
4500         group->p2p_in_provisioning = 1;
4501         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4502
4503         os_memset(&res, 0, sizeof(res));
4504         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4505         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4506                   ETH_ALEN);
4507         res.wps_method = wpa_s->pending_join_wps_method;
4508         if (freq && ssid && ssid_len) {
4509                 res.freq = freq;
4510                 res.ssid_len = ssid_len;
4511                 os_memcpy(res.ssid, ssid, ssid_len);
4512         } else {
4513                 bss = wpa_bss_get_bssid_latest(wpa_s,
4514                                                wpa_s->pending_join_iface_addr);
4515                 if (bss) {
4516                         res.freq = bss->freq;
4517                         res.ssid_len = bss->ssid_len;
4518                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4519                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4520                                    bss->freq,
4521                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4522                 }
4523         }
4524
4525         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4526                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4527                            "starting client");
4528                 wpa_drv_cancel_remain_on_channel(wpa_s);
4529                 wpa_s->off_channel_freq = 0;
4530                 wpa_s->roc_waiting_drv_freq = 0;
4531         }
4532         wpas_start_wps_enrollee(group, &res);
4533
4534         /*
4535          * Allow a longer timeout for join-a-running-group than normal 15
4536          * second group formation timeout since the GO may not have authorized
4537          * our connection yet.
4538          */
4539         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4540         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4541                                wpa_s, NULL);
4542
4543         return 0;
4544 }
4545
4546
4547 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4548                                 int *force_freq, int *pref_freq, int go)
4549 {
4550         int *freqs, res;
4551         unsigned int freq_in_use = 0, num, i;
4552
4553         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4554         if (!freqs)
4555                 return -1;
4556
4557         num = get_shared_radio_freqs(wpa_s, freqs,
4558                                      wpa_s->num_multichan_concurrent);
4559         wpa_printf(MSG_DEBUG,
4560                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4561                    freq, wpa_s->num_multichan_concurrent, num);
4562
4563         if (freq > 0) {
4564                 int ret;
4565                 if (go)
4566                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4567                 else
4568                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4569                 if (!ret) {
4570                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4571                                    "(%u MHz) is not supported for P2P uses",
4572                                    freq);
4573                         res = -3;
4574                         goto exit_free;
4575                 }
4576
4577                 for (i = 0; i < num; i++) {
4578                         if (freqs[i] == freq)
4579                                 freq_in_use = 1;
4580                 }
4581
4582                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4583                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4584                                    freq);
4585                         res = -2;
4586                         goto exit_free;
4587                 }
4588                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4589                            "requested channel (%u MHz)", freq);
4590                 *force_freq = freq;
4591                 goto exit_ok;
4592         }
4593
4594         for (i = 0; i < num; i++) {
4595                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4596                         continue;
4597
4598                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4599                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4600                                    freqs[i]);
4601                         *pref_freq = freqs[i];
4602                 } else {
4603                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4604                                    freqs[i]);
4605                         *force_freq = freqs[i];
4606                 }
4607                 break;
4608         }
4609
4610         if (i == num) {
4611                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4612                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4613                         *force_freq = 0;
4614                 } else if (num < wpa_s->num_multichan_concurrent) {
4615                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4616                         *force_freq = 0;
4617                 } else {
4618                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4619                         res = -2;
4620                         goto exit_free;
4621                 }
4622         }
4623
4624 exit_ok:
4625         res = 0;
4626 exit_free:
4627         os_free(freqs);
4628         return res;
4629 }
4630
4631
4632 /**
4633  * wpas_p2p_connect - Request P2P Group Formation to be started
4634  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4635  * @peer_addr: Address of the peer P2P Device
4636  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4637  * @persistent_group: Whether to create a persistent group
4638  * @auto_join: Whether to select join vs. GO Negotiation automatically
4639  * @join: Whether to join an existing group (as a client) instead of starting
4640  *      Group Owner negotiation; @peer_addr is BSSID in that case
4641  * @auth: Whether to only authorize the connection instead of doing that and
4642  *      initiating Group Owner negotiation
4643  * @go_intent: GO Intent or -1 to use default
4644  * @freq: Frequency for the group or 0 for auto-selection
4645  * @persistent_id: Persistent group credentials to use for forcing GO
4646  *      parameters or -1 to generate new values (SSID/passphrase)
4647  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4648  *      interoperability workaround when initiating group formation
4649  * @ht40: Start GO with 40 MHz channel width
4650  * @vht:  Start GO with VHT support
4651  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4652  *      failure, -2 on failure due to channel not currently available,
4653  *      -3 if forced channel is not supported
4654  */
4655 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4656                      const char *pin, enum p2p_wps_method wps_method,
4657                      int persistent_group, int auto_join, int join, int auth,
4658                      int go_intent, int freq, int persistent_id, int pd,
4659                      int ht40, int vht)
4660 {
4661         int force_freq = 0, pref_freq = 0;
4662         int ret = 0, res;
4663         enum wpa_driver_if_type iftype;
4664         const u8 *if_addr;
4665         struct wpa_ssid *ssid = NULL;
4666
4667         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4668                 return -1;
4669
4670         if (persistent_id >= 0) {
4671                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4672                 if (ssid == NULL || ssid->disabled != 2 ||
4673                     ssid->mode != WPAS_MODE_P2P_GO)
4674                         return -1;
4675         }
4676
4677         os_free(wpa_s->global->add_psk);
4678         wpa_s->global->add_psk = NULL;
4679
4680         wpa_s->global->p2p_fail_on_wps_complete = 0;
4681
4682         if (go_intent < 0)
4683                 go_intent = wpa_s->conf->p2p_go_intent;
4684
4685         if (!auth)
4686                 wpa_s->p2p_long_listen = 0;
4687
4688         wpa_s->p2p_wps_method = wps_method;
4689         wpa_s->p2p_persistent_group = !!persistent_group;
4690         wpa_s->p2p_persistent_id = persistent_id;
4691         wpa_s->p2p_go_intent = go_intent;
4692         wpa_s->p2p_connect_freq = freq;
4693         wpa_s->p2p_fallback_to_go_neg = 0;
4694         wpa_s->p2p_pd_before_go_neg = !!pd;
4695         wpa_s->p2p_go_ht40 = !!ht40;
4696         wpa_s->p2p_go_vht = !!vht;
4697
4698         if (pin)
4699                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4700         else if (wps_method == WPS_PIN_DISPLAY) {
4701                 ret = wps_generate_pin();
4702                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4703                             ret);
4704                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4705                            wpa_s->p2p_pin);
4706         } else
4707                 wpa_s->p2p_pin[0] = '\0';
4708
4709         if (join || auto_join) {
4710                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4711                 if (auth) {
4712                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4713                                    "connect a running group from " MACSTR,
4714                                    MAC2STR(peer_addr));
4715                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4716                         return ret;
4717                 }
4718                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4719                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4720                                            iface_addr) < 0) {
4721                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4722                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4723                                          dev_addr);
4724                 }
4725                 if (auto_join) {
4726                         os_get_reltime(&wpa_s->p2p_auto_started);
4727                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4728                                    "%ld.%06ld",
4729                                    wpa_s->p2p_auto_started.sec,
4730                                    wpa_s->p2p_auto_started.usec);
4731                 }
4732                 wpa_s->user_initiated_pd = 1;
4733                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4734                                   auto_join, freq, NULL, 0) < 0)
4735                         return -1;
4736                 return ret;
4737         }
4738
4739         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4740                                    go_intent == 15);
4741         if (res)
4742                 return res;
4743         wpas_p2p_set_own_freq_preference(wpa_s,
4744                                          force_freq ? force_freq : pref_freq);
4745
4746         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4747
4748         if (wpa_s->create_p2p_iface) {
4749                 /* Prepare to add a new interface for the group */
4750                 iftype = WPA_IF_P2P_GROUP;
4751                 if (go_intent == 15)
4752                         iftype = WPA_IF_P2P_GO;
4753                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4754                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4755                                    "interface for the group");
4756                         return -1;
4757                 }
4758
4759                 if_addr = wpa_s->pending_interface_addr;
4760         } else
4761                 if_addr = wpa_s->own_addr;
4762
4763         if (auth) {
4764                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4765                                          go_intent, if_addr,
4766                                          force_freq, persistent_group, ssid,
4767                                          pref_freq) < 0)
4768                         return -1;
4769                 return ret;
4770         }
4771
4772         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4773                                   go_intent, if_addr, force_freq,
4774                                   persistent_group, ssid, pref_freq) < 0) {
4775                 if (wpa_s->create_p2p_iface)
4776                         wpas_p2p_remove_pending_group_interface(wpa_s);
4777                 return -1;
4778         }
4779         return ret;
4780 }
4781
4782
4783 /**
4784  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4785  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4786  * @freq: Frequency of the channel in MHz
4787  * @duration: Duration of the stay on the channel in milliseconds
4788  *
4789  * This callback is called when the driver indicates that it has started the
4790  * requested remain-on-channel duration.
4791  */
4792 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4793                                    unsigned int freq, unsigned int duration)
4794 {
4795         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4796                 return;
4797         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4798                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4799                               wpa_s->pending_listen_duration);
4800                 wpa_s->pending_listen_freq = 0;
4801         } else {
4802                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4803                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4804                            freq, duration);
4805         }
4806 }
4807
4808
4809 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4810                                  unsigned int timeout)
4811 {
4812         /* Limit maximum Listen state time based on driver limitation. */
4813         if (timeout > wpa_s->max_remain_on_chan)
4814                 timeout = wpa_s->max_remain_on_chan;
4815
4816         return p2p_listen(wpa_s->global->p2p, timeout);
4817 }
4818
4819
4820 /**
4821  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4822  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4823  * @freq: Frequency of the channel in MHz
4824  *
4825  * This callback is called when the driver indicates that a remain-on-channel
4826  * operation has been completed, i.e., the duration on the requested channel
4827  * has timed out.
4828  */
4829 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4830                                           unsigned int freq)
4831 {
4832         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4833                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4834                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4835         wpas_p2p_listen_work_done(wpa_s);
4836         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4837                 return;
4838         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4839                 return; /* P2P module started a new operation */
4840         if (offchannel_pending_action_tx(wpa_s))
4841                 return;
4842         if (wpa_s->p2p_long_listen > 0)
4843                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4844         if (wpa_s->p2p_long_listen > 0) {
4845                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4846                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4847         } else {
4848                 /*
4849                  * When listen duration is over, stop listen & update p2p_state
4850                  * to IDLE.
4851                  */
4852                 p2p_stop_listen(wpa_s->global->p2p);
4853         }
4854 }
4855
4856
4857 /**
4858  * wpas_p2p_group_remove - Remove a P2P group
4859  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4860  * @ifname: Network interface name of the group interface or "*" to remove all
4861  *      groups
4862  * Returns: 0 on success, -1 on failure
4863  *
4864  * This function is used to remove a P2P group. This can be used to disconnect
4865  * from a group in which the local end is a P2P Client or to end a P2P Group in
4866  * case the local end is the Group Owner. If a virtual network interface was
4867  * created for this group, that interface will be removed. Otherwise, only the
4868  * configured P2P group network will be removed from the interface.
4869  */
4870 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4871 {
4872         struct wpa_global *global = wpa_s->global;
4873
4874         if (os_strcmp(ifname, "*") == 0) {
4875                 struct wpa_supplicant *prev;
4876                 wpa_s = global->ifaces;
4877                 while (wpa_s) {
4878                         prev = wpa_s;
4879                         wpa_s = wpa_s->next;
4880                         if (prev->p2p_group_interface !=
4881                             NOT_P2P_GROUP_INTERFACE ||
4882                             (prev->current_ssid &&
4883                              prev->current_ssid->p2p_group))
4884                                 wpas_p2p_disconnect(prev);
4885                 }
4886                 return 0;
4887         }
4888
4889         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4890                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4891                         break;
4892         }
4893
4894         return wpas_p2p_disconnect(wpa_s);
4895 }
4896
4897
4898 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4899 {
4900         unsigned int r;
4901
4902         if (freq == 2) {
4903                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4904                            "band");
4905                 if (wpa_s->best_24_freq > 0 &&
4906                     p2p_supported_freq_go(wpa_s->global->p2p,
4907                                           wpa_s->best_24_freq)) {
4908                         freq = wpa_s->best_24_freq;
4909                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4910                                    "channel: %d MHz", freq);
4911                 } else {
4912                         os_get_random((u8 *) &r, sizeof(r));
4913                         freq = 2412 + (r % 3) * 25;
4914                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4915                                    "channel: %d MHz", freq);
4916                 }
4917         }
4918
4919         if (freq == 5) {
4920                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4921                            "band");
4922                 if (wpa_s->best_5_freq > 0 &&
4923                     p2p_supported_freq_go(wpa_s->global->p2p,
4924                                        wpa_s->best_5_freq)) {
4925                         freq = wpa_s->best_5_freq;
4926                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4927                                    "channel: %d MHz", freq);
4928                 } else {
4929                         os_get_random((u8 *) &r, sizeof(r));
4930                         freq = 5180 + (r % 4) * 20;
4931                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4932                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4933                                            "5 GHz channel for P2P group");
4934                                 return -1;
4935                         }
4936                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4937                                    "channel: %d MHz", freq);
4938                 }
4939         }
4940
4941         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4942                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4943                            "(%u MHz) is not supported for P2P uses",
4944                            freq);
4945                 return -1;
4946         }
4947
4948         return freq;
4949 }
4950
4951
4952 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4953                                    struct p2p_go_neg_results *params,
4954                                    int freq, int ht40, int vht,
4955                                    const struct p2p_channels *channels)
4956 {
4957         int res, *freqs;
4958         unsigned int pref_freq;
4959         unsigned int num, i;
4960
4961         os_memset(params, 0, sizeof(*params));
4962         params->role_go = 1;
4963         params->ht40 = ht40;
4964         params->vht = vht;
4965         if (freq) {
4966                 if (!freq_included(channels, freq)) {
4967                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4968                                    "accepted", freq);
4969                         return -1;
4970                 }
4971                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4972                            "frequency %d MHz", freq);
4973                 params->freq = freq;
4974         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4975                    wpa_s->conf->p2p_oper_channel >= 1 &&
4976                    wpa_s->conf->p2p_oper_channel <= 11 &&
4977                    freq_included(channels,
4978                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4979                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4980                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4981                            "frequency %d MHz", params->freq);
4982         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4983                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4984                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4985                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4986                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4987                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4988                    freq_included(channels,
4989                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4990                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4991                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4992                            "frequency %d MHz", params->freq);
4993         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4994                    wpa_s->best_overall_freq > 0 &&
4995                    p2p_supported_freq_go(wpa_s->global->p2p,
4996                                          wpa_s->best_overall_freq) &&
4997                    freq_included(channels, wpa_s->best_overall_freq)) {
4998                 params->freq = wpa_s->best_overall_freq;
4999                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5000                            "channel %d MHz", params->freq);
5001         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5002                    wpa_s->best_24_freq > 0 &&
5003                    p2p_supported_freq_go(wpa_s->global->p2p,
5004                                          wpa_s->best_24_freq) &&
5005                    freq_included(channels, wpa_s->best_24_freq)) {
5006                 params->freq = wpa_s->best_24_freq;
5007                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5008                            "channel %d MHz", params->freq);
5009         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5010                    wpa_s->best_5_freq > 0 &&
5011                    p2p_supported_freq_go(wpa_s->global->p2p,
5012                                          wpa_s->best_5_freq) &&
5013                    freq_included(channels, wpa_s->best_5_freq)) {
5014                 params->freq = wpa_s->best_5_freq;
5015                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5016                            "channel %d MHz", params->freq);
5017         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5018                                                   channels))) {
5019                 params->freq = pref_freq;
5020                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5021                            "channels", params->freq);
5022         } else {
5023                 int chan;
5024                 for (chan = 0; chan < 11; chan++) {
5025                         params->freq = 2412 + chan * 5;
5026                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
5027                                                       params->freq) &&
5028                             freq_included(channels, params->freq))
5029                                 break;
5030                 }
5031                 if (chan == 11) {
5032                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
5033                                    "allowed");
5034                         return -1;
5035                 }
5036                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
5037                            "known)", params->freq);
5038         }
5039
5040         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
5041         if (!freqs)
5042                 return -1;
5043
5044         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5045                                         wpa_s->num_multichan_concurrent);
5046         if (res < 0) {
5047                 os_free(freqs);
5048                 return -1;
5049         }
5050         num = res;
5051
5052         for (i = 0; i < num; i++) {
5053                 if (freq && freqs[i] == freq)
5054                         break;
5055                 if (!freq && freq_included(channels, freqs[i])) {
5056                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5057                                    freqs[i]);
5058                         params->freq = freqs[i];
5059                         break;
5060                 }
5061         }
5062
5063         if (i == num) {
5064                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5065                         if (freq)
5066                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5067                         else
5068                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5069                         os_free(freqs);
5070                         return -1;
5071                 } else if (num == 0) {
5072                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5073                 } else {
5074                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5075                 }
5076         }
5077
5078         os_free(freqs);
5079         return 0;
5080 }
5081
5082
5083 static struct wpa_supplicant *
5084 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5085                          int go)
5086 {
5087         struct wpa_supplicant *group_wpa_s;
5088
5089         if (!wpas_p2p_create_iface(wpa_s)) {
5090                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5091                         "operations");
5092                 wpa_s->p2p_first_connection_timeout = 0;
5093                 return wpa_s;
5094         }
5095
5096         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5097                                          WPA_IF_P2P_CLIENT) < 0) {
5098                 wpa_msg_global(wpa_s, MSG_ERROR,
5099                                "P2P: Failed to add group interface");
5100                 return NULL;
5101         }
5102         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5103         if (group_wpa_s == NULL) {
5104                 wpa_msg_global(wpa_s, MSG_ERROR,
5105                                "P2P: Failed to initialize group interface");
5106                 wpas_p2p_remove_pending_group_interface(wpa_s);
5107                 return NULL;
5108         }
5109
5110         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5111                 group_wpa_s->ifname);
5112         group_wpa_s->p2p_first_connection_timeout = 0;
5113         return group_wpa_s;
5114 }
5115
5116
5117 /**
5118  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5119  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5120  * @persistent_group: Whether to create a persistent group
5121  * @freq: Frequency for the group or 0 to indicate no hardcoding
5122  * @ht40: Start GO with 40 MHz channel width
5123  * @vht:  Start GO with VHT support
5124  * Returns: 0 on success, -1 on failure
5125  *
5126  * This function creates a new P2P group with the local end as the Group Owner,
5127  * i.e., without using Group Owner Negotiation.
5128  */
5129 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5130                        int freq, int ht40, int vht)
5131 {
5132         struct p2p_go_neg_results params;
5133
5134         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5135                 return -1;
5136
5137         os_free(wpa_s->global->add_psk);
5138         wpa_s->global->add_psk = NULL;
5139
5140         /* Make sure we are not running find during connection establishment */
5141         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5142         wpas_p2p_stop_find_oper(wpa_s);
5143
5144         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5145         if (freq < 0)
5146                 return -1;
5147
5148         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5149                 return -1;
5150         if (params.freq &&
5151             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5152                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5153                            "(%u MHz) is not supported for P2P uses",
5154                            params.freq);
5155                 return -1;
5156         }
5157         p2p_go_params(wpa_s->global->p2p, &params);
5158         params.persistent_group = persistent_group;
5159
5160         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5161         if (wpa_s == NULL)
5162                 return -1;
5163         wpas_start_wps_go(wpa_s, &params, 0);
5164
5165         return 0;
5166 }
5167
5168
5169 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5170                                  struct wpa_ssid *params, int addr_allocated,
5171                                  int freq)
5172 {
5173         struct wpa_ssid *ssid;
5174
5175         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5176         if (wpa_s == NULL)
5177                 return -1;
5178         wpa_s->p2p_last_4way_hs_fail = NULL;
5179
5180         wpa_supplicant_ap_deinit(wpa_s);
5181
5182         ssid = wpa_config_add_network(wpa_s->conf);
5183         if (ssid == NULL)
5184                 return -1;
5185         wpa_config_set_network_defaults(ssid);
5186         ssid->temporary = 1;
5187         ssid->proto = WPA_PROTO_RSN;
5188         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5189         ssid->group_cipher = WPA_CIPHER_CCMP;
5190         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5191         ssid->ssid = os_malloc(params->ssid_len);
5192         if (ssid->ssid == NULL) {
5193                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5194                 return -1;
5195         }
5196         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5197         ssid->ssid_len = params->ssid_len;
5198         ssid->p2p_group = 1;
5199         ssid->export_keys = 1;
5200         if (params->psk_set) {
5201                 os_memcpy(ssid->psk, params->psk, 32);
5202                 ssid->psk_set = 1;
5203         }
5204         if (params->passphrase)
5205                 ssid->passphrase = os_strdup(params->passphrase);
5206
5207         wpa_s->show_group_started = 1;
5208         wpa_s->p2p_in_invitation = 1;
5209         wpa_s->p2p_invite_go_freq = freq;
5210
5211         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5212                              NULL);
5213         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5214                                wpas_p2p_group_formation_timeout,
5215                                wpa_s->parent, NULL);
5216         wpa_supplicant_select_network(wpa_s, ssid);
5217
5218         return 0;
5219 }
5220
5221
5222 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5223                                   struct wpa_ssid *ssid, int addr_allocated,
5224                                   int force_freq, int neg_freq, int ht40,
5225                                   int vht, const struct p2p_channels *channels,
5226                                   int connection_timeout)
5227 {
5228         struct p2p_go_neg_results params;
5229         int go = 0, freq;
5230
5231         if (ssid->disabled != 2 || ssid->ssid == NULL)
5232                 return -1;
5233
5234         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5235             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5236                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5237                            "already running");
5238                 return 0;
5239         }
5240
5241         os_free(wpa_s->global->add_psk);
5242         wpa_s->global->add_psk = NULL;
5243
5244         /* Make sure we are not running find during connection establishment */
5245         wpas_p2p_stop_find_oper(wpa_s);
5246
5247         wpa_s->p2p_fallback_to_go_neg = 0;
5248
5249         if (force_freq > 0) {
5250                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5251                 if (freq < 0)
5252                         return -1;
5253         } else {
5254                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5255                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5256                         freq = 0;
5257         }
5258
5259         if (ssid->mode == WPAS_MODE_INFRA)
5260                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5261
5262         if (ssid->mode != WPAS_MODE_P2P_GO)
5263                 return -1;
5264
5265         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5266                 return -1;
5267
5268         params.role_go = 1;
5269         params.psk_set = ssid->psk_set;
5270         if (params.psk_set)
5271                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5272         if (ssid->passphrase) {
5273                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5274                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5275                                    "persistent group");
5276                         return -1;
5277                 }
5278                 os_strlcpy(params.passphrase, ssid->passphrase,
5279                            sizeof(params.passphrase));
5280         }
5281         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5282         params.ssid_len = ssid->ssid_len;
5283         params.persistent_group = 1;
5284
5285         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5286         if (wpa_s == NULL)
5287                 return -1;
5288
5289         wpa_s->p2p_first_connection_timeout = connection_timeout;
5290         wpas_start_wps_go(wpa_s, &params, 0);
5291
5292         return 0;
5293 }
5294
5295
5296 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5297                                struct wpabuf *proberesp_ies)
5298 {
5299         struct wpa_supplicant *wpa_s = ctx;
5300         if (wpa_s->ap_iface) {
5301                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5302                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5303                         wpabuf_free(beacon_ies);
5304                         wpabuf_free(proberesp_ies);
5305                         return;
5306                 }
5307                 if (beacon_ies) {
5308                         wpabuf_free(hapd->p2p_beacon_ie);
5309                         hapd->p2p_beacon_ie = beacon_ies;
5310                 }
5311                 wpabuf_free(hapd->p2p_probe_resp_ie);
5312                 hapd->p2p_probe_resp_ie = proberesp_ies;
5313         } else {
5314                 wpabuf_free(beacon_ies);
5315                 wpabuf_free(proberesp_ies);
5316         }
5317         wpa_supplicant_ap_update_beacon(wpa_s);
5318 }
5319
5320
5321 static void wpas_p2p_idle_update(void *ctx, int idle)
5322 {
5323         struct wpa_supplicant *wpa_s = ctx;
5324         if (!wpa_s->ap_iface)
5325                 return;
5326         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5327         if (idle) {
5328                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5329                     wpa_s->p2p_in_provisioning) {
5330                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5331                         return;
5332                 }
5333                 wpas_p2p_set_group_idle_timeout(wpa_s);
5334         } else
5335                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5336 }
5337
5338
5339 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5340                                        struct wpa_ssid *ssid)
5341 {
5342         struct p2p_group *group;
5343         struct p2p_group_config *cfg;
5344
5345         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5346                 return NULL;
5347
5348         cfg = os_zalloc(sizeof(*cfg));
5349         if (cfg == NULL)
5350                 return NULL;
5351
5352         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5353                 cfg->persistent_group = 2;
5354         else if (ssid->p2p_persistent_group)
5355                 cfg->persistent_group = 1;
5356         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5357         if (wpa_s->max_stations &&
5358             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5359                 cfg->max_clients = wpa_s->max_stations;
5360         else
5361                 cfg->max_clients = wpa_s->conf->max_num_sta;
5362         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5363         cfg->ssid_len = ssid->ssid_len;
5364         cfg->freq = ssid->frequency;
5365         cfg->cb_ctx = wpa_s;
5366         cfg->ie_update = wpas_p2p_ie_update;
5367         cfg->idle_update = wpas_p2p_idle_update;
5368
5369         group = p2p_group_init(wpa_s->global->p2p, cfg);
5370         if (group == NULL)
5371                 os_free(cfg);
5372         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5373                 p2p_group_notif_formation_done(group);
5374         wpa_s->p2p_group = group;
5375         return group;
5376 }
5377
5378
5379 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5380                           int registrar)
5381 {
5382         struct wpa_ssid *ssid = wpa_s->current_ssid;
5383
5384         if (!wpa_s->p2p_in_provisioning) {
5385                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5386                            "provisioning not in progress");
5387                 return;
5388         }
5389
5390         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5391                 u8 go_dev_addr[ETH_ALEN];
5392                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5393                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5394                                           ssid->ssid_len);
5395                 /* Clear any stored provisioning info */
5396                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5397         }
5398
5399         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5400                              NULL);
5401         wpa_s->p2p_go_group_formation_completed = 1;
5402         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5403                 /*
5404                  * Use a separate timeout for initial data connection to
5405                  * complete to allow the group to be removed automatically if
5406                  * something goes wrong in this step before the P2P group idle
5407                  * timeout mechanism is taken into use.
5408                  */
5409                 wpa_dbg(wpa_s, MSG_DEBUG,
5410                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5411                         P2P_MAX_INITIAL_CONN_WAIT);
5412                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5413                                        wpas_p2p_group_formation_timeout,
5414                                        wpa_s->parent, NULL);
5415         } else if (ssid) {
5416                 /*
5417                  * Use a separate timeout for initial data connection to
5418                  * complete to allow the group to be removed automatically if
5419                  * the client does not complete data connection successfully.
5420                  */
5421                 wpa_dbg(wpa_s, MSG_DEBUG,
5422                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5423                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5424                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5425                                        wpas_p2p_group_formation_timeout,
5426                                        wpa_s->parent, NULL);
5427                 /*
5428                  * Complete group formation on first successful data connection
5429                  */
5430                 wpa_s->p2p_go_group_formation_completed = 0;
5431         }
5432         if (wpa_s->global->p2p)
5433                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5434         wpas_group_formation_completed(wpa_s, 1);
5435 }
5436
5437
5438 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5439                          struct wps_event_fail *fail)
5440 {
5441         if (!wpa_s->p2p_in_provisioning) {
5442                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5443                            "provisioning not in progress");
5444                 return;
5445         }
5446
5447         if (wpa_s->go_params) {
5448                 p2p_clear_provisioning_info(
5449                         wpa_s->global->p2p,
5450                         wpa_s->go_params->peer_device_addr);
5451         }
5452
5453         wpas_notify_p2p_wps_failed(wpa_s, fail);
5454
5455         if (wpa_s == wpa_s->global->p2p_group_formation) {
5456                 /*
5457                  * Allow some time for the failed WPS negotiation exchange to
5458                  * complete, but remove the group since group formation cannot
5459                  * succeed after provisioning failure.
5460                  */
5461                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5462                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5463                 eloop_deplete_timeout(0, 50000,
5464                                       wpas_p2p_group_formation_timeout,
5465                                       wpa_s->parent, NULL);
5466         }
5467 }
5468
5469
5470 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5471 {
5472         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5473             !wpa_s->p2p_in_provisioning)
5474                 return 0;
5475
5476         wpas_p2p_grpform_fail_after_wps(wpa_s);
5477
5478         return 1;
5479 }
5480
5481
5482 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5483                        const char *config_method,
5484                        enum wpas_p2p_prov_disc_use use)
5485 {
5486         u16 config_methods;
5487
5488         wpa_s->p2p_fallback_to_go_neg = 0;
5489         wpa_s->pending_pd_use = NORMAL_PD;
5490         if (os_strncmp(config_method, "display", 7) == 0)
5491                 config_methods = WPS_CONFIG_DISPLAY;
5492         else if (os_strncmp(config_method, "keypad", 6) == 0)
5493                 config_methods = WPS_CONFIG_KEYPAD;
5494         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5495                  os_strncmp(config_method, "pushbutton", 10) == 0)
5496                 config_methods = WPS_CONFIG_PUSHBUTTON;
5497         else {
5498                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5499                 return -1;
5500         }
5501
5502         if (use == WPAS_P2P_PD_AUTO) {
5503                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5504                 wpa_s->pending_pd_config_methods = config_methods;
5505                 wpa_s->p2p_auto_pd = 1;
5506                 wpa_s->p2p_auto_join = 0;
5507                 wpa_s->pending_pd_before_join = 0;
5508                 wpa_s->auto_pd_scan_retry = 0;
5509                 wpas_p2p_stop_find(wpa_s);
5510                 wpa_s->p2p_join_scan_count = 0;
5511                 os_get_reltime(&wpa_s->p2p_auto_started);
5512                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5513                            wpa_s->p2p_auto_started.sec,
5514                            wpa_s->p2p_auto_started.usec);
5515                 wpas_p2p_join_scan(wpa_s, NULL);
5516                 return 0;
5517         }
5518
5519         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5520                 return -1;
5521
5522         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5523                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5524                                  0, 1);
5525 }
5526
5527
5528 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5529                               char *end)
5530 {
5531         return p2p_scan_result_text(ies, ies_len, buf, end);
5532 }
5533
5534
5535 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5536 {
5537         if (!offchannel_pending_action_tx(wpa_s))
5538                 return;
5539
5540         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5541                    "operation request");
5542         offchannel_clear_pending_action_tx(wpa_s);
5543 }
5544
5545
5546 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5547                   enum p2p_discovery_type type,
5548                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5549                   const u8 *dev_id, unsigned int search_delay)
5550 {
5551         wpas_p2p_clear_pending_action_tx(wpa_s);
5552         wpa_s->p2p_long_listen = 0;
5553
5554         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5555             wpa_s->p2p_in_provisioning)
5556                 return -1;
5557
5558         wpa_supplicant_cancel_sched_scan(wpa_s);
5559
5560         return p2p_find(wpa_s->global->p2p, timeout, type,
5561                         num_req_dev_types, req_dev_types, dev_id,
5562                         search_delay);
5563 }
5564
5565
5566 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5567 {
5568         wpas_p2p_clear_pending_action_tx(wpa_s);
5569         wpa_s->p2p_long_listen = 0;
5570         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5571         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5572
5573         if (wpa_s->global->p2p)
5574                 p2p_stop_find(wpa_s->global->p2p);
5575
5576         return 0;
5577 }
5578
5579
5580 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5581 {
5582         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5583                 return;
5584         wpas_p2p_remove_pending_group_interface(wpa_s);
5585 }
5586
5587
5588 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5589 {
5590         struct wpa_supplicant *wpa_s = eloop_ctx;
5591         wpa_s->p2p_long_listen = 0;
5592 }
5593
5594
5595 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5596 {
5597         int res;
5598
5599         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5600                 return -1;
5601
5602         wpa_supplicant_cancel_sched_scan(wpa_s);
5603         wpas_p2p_clear_pending_action_tx(wpa_s);
5604
5605         if (timeout == 0) {
5606                 /*
5607                  * This is a request for unlimited Listen state. However, at
5608                  * least for now, this is mapped to a Listen state for one
5609                  * hour.
5610                  */
5611                 timeout = 3600;
5612         }
5613         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5614         wpa_s->p2p_long_listen = 0;
5615
5616         /*
5617          * Stop previous find/listen operation to avoid trying to request a new
5618          * remain-on-channel operation while the driver is still running the
5619          * previous one.
5620          */
5621         if (wpa_s->global->p2p)
5622                 p2p_stop_find(wpa_s->global->p2p);
5623
5624         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5625         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5626                 wpa_s->p2p_long_listen = timeout * 1000;
5627                 eloop_register_timeout(timeout, 0,
5628                                        wpas_p2p_long_listen_timeout,
5629                                        wpa_s, NULL);
5630         }
5631
5632         return res;
5633 }
5634
5635
5636 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5637                           u8 *buf, size_t len, int p2p_group)
5638 {
5639         struct wpabuf *p2p_ie;
5640         int ret;
5641
5642         if (wpa_s->global->p2p_disabled)
5643                 return -1;
5644         if (wpa_s->global->p2p == NULL)
5645                 return -1;
5646         if (bss == NULL)
5647                 return -1;
5648
5649         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5650         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5651                                p2p_group, p2p_ie);
5652         wpabuf_free(p2p_ie);
5653
5654         return ret;
5655 }
5656
5657
5658 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5659                           const u8 *dst, const u8 *bssid,
5660                           const u8 *ie, size_t ie_len, int ssi_signal)
5661 {
5662         if (wpa_s->global->p2p_disabled)
5663                 return 0;
5664         if (wpa_s->global->p2p == NULL)
5665                 return 0;
5666
5667         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5668                                  ie, ie_len)) {
5669         case P2P_PREQ_NOT_P2P:
5670                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5671                                  ssi_signal);
5672                 /* fall through */
5673         case P2P_PREQ_MALFORMED:
5674         case P2P_PREQ_NOT_LISTEN:
5675         case P2P_PREQ_NOT_PROCESSED:
5676         default: /* make gcc happy */
5677                 return 0;
5678         case P2P_PREQ_PROCESSED:
5679                 return 1;
5680         }
5681 }
5682
5683
5684 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5685                         const u8 *sa, const u8 *bssid,
5686                         u8 category, const u8 *data, size_t len, int freq)
5687 {
5688         if (wpa_s->global->p2p_disabled)
5689                 return;
5690         if (wpa_s->global->p2p == NULL)
5691                 return;
5692
5693         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5694                       freq);
5695 }
5696
5697
5698 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5699 {
5700         if (wpa_s->global->p2p_disabled)
5701                 return;
5702         if (wpa_s->global->p2p == NULL)
5703                 return;
5704
5705         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5706 }
5707
5708
5709 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5710 {
5711         p2p_group_deinit(wpa_s->p2p_group);
5712         wpa_s->p2p_group = NULL;
5713
5714         wpa_s->ap_configured_cb = NULL;
5715         wpa_s->ap_configured_cb_ctx = NULL;
5716         wpa_s->ap_configured_cb_data = NULL;
5717         wpa_s->connect_without_scan = NULL;
5718 }
5719
5720
5721 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5722 {
5723         wpa_s->p2p_long_listen = 0;
5724
5725         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5726                 return -1;
5727
5728         return p2p_reject(wpa_s->global->p2p, addr);
5729 }
5730
5731
5732 /* Invite to reinvoke a persistent group */
5733 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5734                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5735                     int ht40, int vht, int pref_freq)
5736 {
5737         enum p2p_invite_role role;
5738         u8 *bssid = NULL;
5739         int force_freq = 0;
5740         int res;
5741         int no_pref_freq_given = pref_freq == 0;
5742
5743         wpa_s->global->p2p_invite_group = NULL;
5744         if (peer_addr)
5745                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5746         else
5747                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5748
5749         wpa_s->p2p_persistent_go_freq = freq;
5750         wpa_s->p2p_go_ht40 = !!ht40;
5751         if (ssid->mode == WPAS_MODE_P2P_GO) {
5752                 role = P2P_INVITE_ROLE_GO;
5753                 if (peer_addr == NULL) {
5754                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5755                                    "address in invitation command");
5756                         return -1;
5757                 }
5758                 if (wpas_p2p_create_iface(wpa_s)) {
5759                         if (wpas_p2p_add_group_interface(wpa_s,
5760                                                          WPA_IF_P2P_GO) < 0) {
5761                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5762                                            "allocate a new interface for the "
5763                                            "group");
5764                                 return -1;
5765                         }
5766                         bssid = wpa_s->pending_interface_addr;
5767                 } else
5768                         bssid = wpa_s->own_addr;
5769         } else {
5770                 role = P2P_INVITE_ROLE_CLIENT;
5771                 peer_addr = ssid->bssid;
5772         }
5773         wpa_s->pending_invite_ssid_id = ssid->id;
5774
5775         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5776                                    role == P2P_INVITE_ROLE_GO);
5777         if (res)
5778                 return res;
5779
5780         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5781                 return -1;
5782
5783         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5784             no_pref_freq_given && pref_freq > 0 &&
5785             wpa_s->num_multichan_concurrent > 1 &&
5786             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5787                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5788                            pref_freq);
5789                 pref_freq = 0;
5790         }
5791
5792         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5793                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5794                           1, pref_freq, -1);
5795 }
5796
5797
5798 /* Invite to join an active group */
5799 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5800                           const u8 *peer_addr, const u8 *go_dev_addr)
5801 {
5802         struct wpa_global *global = wpa_s->global;
5803         enum p2p_invite_role role;
5804         u8 *bssid = NULL;
5805         struct wpa_ssid *ssid;
5806         int persistent;
5807         int freq = 0, force_freq = 0, pref_freq = 0;
5808         int res;
5809
5810         wpa_s->p2p_persistent_go_freq = 0;
5811         wpa_s->p2p_go_ht40 = 0;
5812         wpa_s->p2p_go_vht = 0;
5813
5814         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5815                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5816                         break;
5817         }
5818         if (wpa_s == NULL) {
5819                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5820                 return -1;
5821         }
5822
5823         ssid = wpa_s->current_ssid;
5824         if (ssid == NULL) {
5825                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5826                            "invitation");
5827                 return -1;
5828         }
5829
5830         wpa_s->global->p2p_invite_group = wpa_s;
5831         persistent = ssid->p2p_persistent_group &&
5832                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5833                                         ssid->ssid, ssid->ssid_len);
5834
5835         if (ssid->mode == WPAS_MODE_P2P_GO) {
5836                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5837                 bssid = wpa_s->own_addr;
5838                 if (go_dev_addr == NULL)
5839                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5840                 freq = ssid->frequency;
5841         } else {
5842                 role = P2P_INVITE_ROLE_CLIENT;
5843                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5844                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5845                                    "invite to current group");
5846                         return -1;
5847                 }
5848                 bssid = wpa_s->bssid;
5849                 if (go_dev_addr == NULL &&
5850                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5851                         go_dev_addr = wpa_s->go_dev_addr;
5852                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5853                         (int) wpa_s->assoc_freq;
5854         }
5855         wpa_s->parent->pending_invite_ssid_id = -1;
5856
5857         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5858                 return -1;
5859
5860         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5861                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5862         if (res)
5863                 return res;
5864         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5865
5866         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5867                           ssid->ssid, ssid->ssid_len, force_freq,
5868                           go_dev_addr, persistent, pref_freq, -1);
5869 }
5870
5871
5872 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5873 {
5874         struct wpa_ssid *ssid = wpa_s->current_ssid;
5875         const char *ssid_txt;
5876         u8 go_dev_addr[ETH_ALEN];
5877         int network_id = -1;
5878         int persistent;
5879         int freq;
5880         u8 ip[3 * 4];
5881         char ip_addr[100];
5882
5883         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5884                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5885                                      wpa_s->parent, NULL);
5886         }
5887
5888         if (!wpa_s->show_group_started || !ssid)
5889                 return;
5890
5891         wpa_s->show_group_started = 0;
5892
5893         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5894         os_memset(go_dev_addr, 0, ETH_ALEN);
5895         if (ssid->bssid_set)
5896                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5897         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5898                                                ssid->ssid_len);
5899         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5900
5901         if (wpa_s->global->p2p_group_formation == wpa_s)
5902                 wpa_s->global->p2p_group_formation = NULL;
5903
5904         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5905                 (int) wpa_s->assoc_freq;
5906
5907         ip_addr[0] = '\0';
5908         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5909                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5910                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5911                             ip[0], ip[1], ip[2], ip[3],
5912                             ip[4], ip[5], ip[6], ip[7],
5913                             ip[8], ip[9], ip[10], ip[11]);
5914         }
5915
5916         if (ssid->passphrase == NULL && ssid->psk_set) {
5917                 char psk[65];
5918                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5919                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5920                                "%s client ssid=\"%s\" freq=%d psk=%s "
5921                                "go_dev_addr=" MACSTR "%s%s",
5922                                wpa_s->ifname, ssid_txt, freq, psk,
5923                                MAC2STR(go_dev_addr),
5924                                persistent ? " [PERSISTENT]" : "", ip_addr);
5925         } else {
5926                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5927                                "%s client ssid=\"%s\" freq=%d "
5928                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5929                                wpa_s->ifname, ssid_txt, freq,
5930                                ssid->passphrase ? ssid->passphrase : "",
5931                                MAC2STR(go_dev_addr),
5932                                persistent ? " [PERSISTENT]" : "", ip_addr);
5933         }
5934
5935         if (persistent)
5936                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5937                                                              ssid, go_dev_addr);
5938         if (network_id < 0)
5939                 network_id = ssid->id;
5940         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5941 }
5942
5943
5944 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5945                           u32 interval1, u32 duration2, u32 interval2)
5946 {
5947         int ret;
5948
5949         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5950                 return -1;
5951
5952         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5953             wpa_s->current_ssid == NULL ||
5954             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5955                 return -1;
5956
5957         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5958                                wpa_s->own_addr, wpa_s->assoc_freq,
5959                                duration1, interval1, duration2, interval2);
5960         if (ret == 0)
5961                 wpa_s->waiting_presence_resp = 1;
5962
5963         return ret;
5964 }
5965
5966
5967 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5968                         unsigned int interval)
5969 {
5970         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5971                 return -1;
5972
5973         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5974 }
5975
5976
5977 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5978 {
5979         if (wpa_s->current_ssid == NULL) {
5980                 /*
5981                  * current_ssid can be cleared when P2P client interface gets
5982                  * disconnected, so assume this interface was used as P2P
5983                  * client.
5984                  */
5985                 return 1;
5986         }
5987         return wpa_s->current_ssid->p2p_group &&
5988                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5989 }
5990
5991
5992 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5993 {
5994         struct wpa_supplicant *wpa_s = eloop_ctx;
5995
5996         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5997                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5998                            "disabled");
5999                 return;
6000         }
6001
6002         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6003                    "group");
6004         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6005 }
6006
6007
6008 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6009 {
6010         int timeout;
6011
6012         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6013                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6014
6015         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6016                 return;
6017
6018         timeout = wpa_s->conf->p2p_group_idle;
6019         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6020             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6021             timeout = P2P_MAX_CLIENT_IDLE;
6022
6023         if (timeout == 0)
6024                 return;
6025
6026         if (timeout < 0) {
6027                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6028                         timeout = 0; /* special client mode no-timeout */
6029                 else
6030                         return;
6031         }
6032
6033         if (wpa_s->p2p_in_provisioning) {
6034                 /*
6035                  * Use the normal group formation timeout during the
6036                  * provisioning phase to avoid terminating this process too
6037                  * early due to group idle timeout.
6038                  */
6039                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6040                            "during provisioning");
6041                 return;
6042         }
6043
6044         if (wpa_s->show_group_started) {
6045                 /*
6046                  * Use the normal group formation timeout between the end of
6047                  * the provisioning phase and completion of 4-way handshake to
6048                  * avoid terminating this process too early due to group idle
6049                  * timeout.
6050                  */
6051                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6052                            "while waiting for initial 4-way handshake to "
6053                            "complete");
6054                 return;
6055         }
6056
6057         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6058                    timeout);
6059         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6060                                wpa_s, NULL);
6061 }
6062
6063
6064 /* Returns 1 if the interface was removed */
6065 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6066                           u16 reason_code, const u8 *ie, size_t ie_len,
6067                           int locally_generated)
6068 {
6069         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6070                 return 0;
6071
6072         if (!locally_generated)
6073                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6074                                  ie_len);
6075
6076         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6077             wpa_s->current_ssid &&
6078             wpa_s->current_ssid->p2p_group &&
6079             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6080                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6081                            "session is ending");
6082                 if (wpas_p2p_group_delete(wpa_s,
6083                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6084                     > 0)
6085                         return 1;
6086         }
6087
6088         return 0;
6089 }
6090
6091
6092 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6093                              u16 reason_code, const u8 *ie, size_t ie_len,
6094                              int locally_generated)
6095 {
6096         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6097                 return;
6098
6099         if (!locally_generated)
6100                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6101                                    ie_len);
6102 }
6103
6104
6105 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6106 {
6107         struct p2p_data *p2p = wpa_s->global->p2p;
6108
6109         if (p2p == NULL)
6110                 return;
6111
6112         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6113                 return;
6114
6115         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6116                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6117
6118         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6119                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6120
6121         if (wpa_s->wps &&
6122             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6123                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6124
6125         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6126                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6127
6128         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6129                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6130                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6131                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6132                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6133         }
6134
6135         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6136                 p2p_set_sec_dev_types(p2p,
6137                                       (void *) wpa_s->conf->sec_device_type,
6138                                       wpa_s->conf->num_sec_device_types);
6139
6140         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6141                 int i;
6142                 p2p_remove_wps_vendor_extensions(p2p);
6143                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6144                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6145                                 continue;
6146                         p2p_add_wps_vendor_extension(
6147                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6148                 }
6149         }
6150
6151         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6152             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6153                 char country[3];
6154                 country[0] = wpa_s->conf->country[0];
6155                 country[1] = wpa_s->conf->country[1];
6156                 country[2] = 0x04;
6157                 p2p_set_country(p2p, country);
6158         }
6159
6160         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6161                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6162                                      wpa_s->conf->p2p_ssid_postfix ?
6163                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6164                                      0);
6165         }
6166
6167         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6168                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6169
6170         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6171                 u8 reg_class, channel;
6172                 int ret;
6173                 unsigned int r;
6174                 if (wpa_s->conf->p2p_listen_reg_class &&
6175                     wpa_s->conf->p2p_listen_channel) {
6176                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6177                         channel = wpa_s->conf->p2p_listen_channel;
6178                 } else {
6179                         reg_class = 81;
6180                         /*
6181                          * Pick one of the social channels randomly as the
6182                          * listen channel.
6183                          */
6184                         os_get_random((u8 *) &r, sizeof(r));
6185                         channel = 1 + (r % 3) * 5;
6186                 }
6187                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6188                 if (ret)
6189                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6190                                    "failed: %d", ret);
6191         }
6192         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6193                 u8 op_reg_class, op_channel, cfg_op_channel;
6194                 int ret = 0;
6195                 unsigned int r;
6196                 if (wpa_s->conf->p2p_oper_reg_class &&
6197                     wpa_s->conf->p2p_oper_channel) {
6198                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6199                         op_channel = wpa_s->conf->p2p_oper_channel;
6200                         cfg_op_channel = 1;
6201                 } else {
6202                         op_reg_class = 81;
6203                         /*
6204                          * Use random operation channel from (1, 6, 11)
6205                          *if no other preference is indicated.
6206                          */
6207                         os_get_random((u8 *) &r, sizeof(r));
6208                         op_channel = 1 + (r % 3) * 5;
6209                         cfg_op_channel = 0;
6210                 }
6211                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6212                                            cfg_op_channel);
6213                 if (ret)
6214                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6215                                    "failed: %d", ret);
6216         }
6217
6218         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6219                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6220                                       wpa_s->conf->p2p_pref_chan) < 0) {
6221                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6222                                    "update failed");
6223                 }
6224
6225                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6226                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6227                                    "update failed");
6228                 }
6229         }
6230 }
6231
6232
6233 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6234                      int duration)
6235 {
6236         if (!wpa_s->ap_iface)
6237                 return -1;
6238         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6239                                    duration);
6240 }
6241
6242
6243 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6244 {
6245         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6246                 return -1;
6247
6248         wpa_s->global->cross_connection = enabled;
6249         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6250
6251         if (!enabled) {
6252                 struct wpa_supplicant *iface;
6253
6254                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6255                 {
6256                         if (iface->cross_connect_enabled == 0)
6257                                 continue;
6258
6259                         iface->cross_connect_enabled = 0;
6260                         iface->cross_connect_in_use = 0;
6261                         wpa_msg_global(iface->parent, MSG_INFO,
6262                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6263                                        iface->ifname,
6264                                        iface->cross_connect_uplink);
6265                 }
6266         }
6267
6268         return 0;
6269 }
6270
6271
6272 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6273 {
6274         struct wpa_supplicant *iface;
6275
6276         if (!uplink->global->cross_connection)
6277                 return;
6278
6279         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6280                 if (!iface->cross_connect_enabled)
6281                         continue;
6282                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6283                     0)
6284                         continue;
6285                 if (iface->ap_iface == NULL)
6286                         continue;
6287                 if (iface->cross_connect_in_use)
6288                         continue;
6289
6290                 iface->cross_connect_in_use = 1;
6291                 wpa_msg_global(iface->parent, MSG_INFO,
6292                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6293                                iface->ifname, iface->cross_connect_uplink);
6294         }
6295 }
6296
6297
6298 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6299 {
6300         struct wpa_supplicant *iface;
6301
6302         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6303                 if (!iface->cross_connect_enabled)
6304                         continue;
6305                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6306                     0)
6307                         continue;
6308                 if (!iface->cross_connect_in_use)
6309                         continue;
6310
6311                 wpa_msg_global(iface->parent, MSG_INFO,
6312                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6313                                iface->ifname, iface->cross_connect_uplink);
6314                 iface->cross_connect_in_use = 0;
6315         }
6316 }
6317
6318
6319 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6320 {
6321         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6322             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6323             wpa_s->cross_connect_disallowed)
6324                 wpas_p2p_disable_cross_connect(wpa_s);
6325         else
6326                 wpas_p2p_enable_cross_connect(wpa_s);
6327         if (!wpa_s->ap_iface &&
6328             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6329                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6330 }
6331
6332
6333 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6334 {
6335         wpas_p2p_disable_cross_connect(wpa_s);
6336         if (!wpa_s->ap_iface &&
6337             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6338                                          wpa_s, NULL))
6339                 wpas_p2p_set_group_idle_timeout(wpa_s);
6340 }
6341
6342
6343 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6344 {
6345         struct wpa_supplicant *iface;
6346
6347         if (!wpa_s->global->cross_connection)
6348                 return;
6349
6350         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6351                 if (iface == wpa_s)
6352                         continue;
6353                 if (iface->drv_flags &
6354                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6355                         continue;
6356                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6357                         continue;
6358
6359                 wpa_s->cross_connect_enabled = 1;
6360                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6361                            sizeof(wpa_s->cross_connect_uplink));
6362                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6363                            "%s to %s whenever uplink is available",
6364                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6365
6366                 if (iface->ap_iface || iface->current_ssid == NULL ||
6367                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6368                     iface->cross_connect_disallowed ||
6369                     iface->wpa_state != WPA_COMPLETED)
6370                         break;
6371
6372                 wpa_s->cross_connect_in_use = 1;
6373                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6374                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6375                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6376                 break;
6377         }
6378 }
6379
6380
6381 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6382 {
6383         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6384             !wpa_s->p2p_in_provisioning)
6385                 return 0; /* not P2P client operation */
6386
6387         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6388                    "session overlap");
6389         if (wpa_s != wpa_s->parent)
6390                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6391         wpas_p2p_group_formation_failed(wpa_s);
6392         return 1;
6393 }
6394
6395
6396 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6397 {
6398         struct wpa_supplicant *wpa_s = eloop_ctx;
6399         wpas_p2p_notif_pbc_overlap(wpa_s);
6400 }
6401
6402
6403 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6404 {
6405         struct p2p_channels chan, cli_chan;
6406
6407         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6408                 return;
6409
6410         os_memset(&chan, 0, sizeof(chan));
6411         os_memset(&cli_chan, 0, sizeof(cli_chan));
6412         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6413                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6414                            "channel list");
6415                 return;
6416         }
6417
6418         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6419 }
6420
6421
6422 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6423                                      struct wpa_scan_results *scan_res)
6424 {
6425         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6426 }
6427
6428
6429 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6430 {
6431         struct wpa_global *global = wpa_s->global;
6432         int found = 0;
6433         const u8 *peer;
6434
6435         if (global->p2p == NULL)
6436                 return -1;
6437
6438         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6439
6440         if (wpa_s->pending_interface_name[0] &&
6441             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6442                 found = 1;
6443
6444         peer = p2p_get_go_neg_peer(global->p2p);
6445         if (peer) {
6446                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6447                            MACSTR, MAC2STR(peer));
6448                 p2p_unauthorize(global->p2p, peer);
6449                 found = 1;
6450         }
6451
6452         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6453                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6454                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6455                 found = 1;
6456         }
6457
6458         if (wpa_s->pending_pd_before_join) {
6459                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6460                 wpa_s->pending_pd_before_join = 0;
6461                 found = 1;
6462         }
6463
6464         wpas_p2p_stop_find(wpa_s);
6465
6466         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6467                 if (wpa_s == global->p2p_group_formation &&
6468                     (wpa_s->p2p_in_provisioning ||
6469                      wpa_s->parent->pending_interface_type ==
6470                      WPA_IF_P2P_CLIENT)) {
6471                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6472                                    "formation found - cancelling",
6473                                    wpa_s->ifname);
6474                         found = 1;
6475                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6476                                              wpa_s->parent, NULL);
6477                         if (wpa_s->p2p_in_provisioning) {
6478                                 wpas_group_formation_completed(wpa_s, 0);
6479                                 break;
6480                         }
6481                         wpas_p2p_group_delete(wpa_s,
6482                                               P2P_GROUP_REMOVAL_REQUESTED);
6483                         break;
6484                 } else if (wpa_s->p2p_in_invitation) {
6485                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6486                                    wpa_s->ifname);
6487                         found = 1;
6488                         wpas_p2p_group_formation_failed(wpa_s);
6489                 }
6490         }
6491
6492         if (!found) {
6493                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6494                 return -1;
6495         }
6496
6497         return 0;
6498 }
6499
6500
6501 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6502 {
6503         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6504                 return;
6505
6506         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6507                    "being available anymore");
6508         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6509 }
6510
6511
6512 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6513                                    int freq_24, int freq_5, int freq_overall)
6514 {
6515         struct p2p_data *p2p = wpa_s->global->p2p;
6516         if (p2p == NULL)
6517                 return;
6518         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6519 }
6520
6521
6522 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6523 {
6524         u8 peer[ETH_ALEN];
6525         struct p2p_data *p2p = wpa_s->global->p2p;
6526
6527         if (p2p == NULL)
6528                 return -1;
6529
6530         if (hwaddr_aton(addr, peer))
6531                 return -1;
6532
6533         return p2p_unauthorize(p2p, peer);
6534 }
6535
6536
6537 /**
6538  * wpas_p2p_disconnect - Disconnect from a P2P Group
6539  * @wpa_s: Pointer to wpa_supplicant data
6540  * Returns: 0 on success, -1 on failure
6541  *
6542  * This can be used to disconnect from a group in which the local end is a P2P
6543  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6544  * virtual network interface was created for this group, that interface will be
6545  * removed. Otherwise, only the configured P2P group network will be removed
6546  * from the interface.
6547  */
6548 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6549 {
6550
6551         if (wpa_s == NULL)
6552                 return -1;
6553
6554         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6555                 -1 : 0;
6556 }
6557
6558
6559 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6560 {
6561         int ret;
6562
6563         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6564                 return 0;
6565
6566         ret = p2p_in_progress(wpa_s->global->p2p);
6567         if (ret == 0) {
6568                 /*
6569                  * Check whether there is an ongoing WPS provisioning step (or
6570                  * other parts of group formation) on another interface since
6571                  * p2p_in_progress() does not report this to avoid issues for
6572                  * scans during such provisioning step.
6573                  */
6574                 if (wpa_s->global->p2p_group_formation &&
6575                     wpa_s->global->p2p_group_formation != wpa_s) {
6576                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6577                                 "in group formation",
6578                                 wpa_s->global->p2p_group_formation->ifname);
6579                         ret = 1;
6580                 }
6581         }
6582
6583         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6584                 struct os_reltime now;
6585                 os_get_reltime(&now);
6586                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6587                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6588                         /* Wait for the first client has expired */
6589                         wpa_s->global->p2p_go_wait_client.sec = 0;
6590                 } else {
6591                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6592                         ret = 1;
6593                 }
6594         }
6595
6596         return ret;
6597 }
6598
6599
6600 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6601                               struct wpa_ssid *ssid)
6602 {
6603         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6604             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6605                                  wpa_s->parent, NULL) > 0) {
6606                 /**
6607                  * Remove the network by scheduling the group formation
6608                  * timeout to happen immediately. The teardown code
6609                  * needs to be scheduled to run asynch later so that we
6610                  * don't delete data from under ourselves unexpectedly.
6611                  * Calling wpas_p2p_group_formation_timeout directly
6612                  * causes a series of crashes in WPS failure scenarios.
6613                  */
6614                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6615                            "P2P group network getting removed");
6616                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6617                                        wpa_s->parent, NULL);
6618         }
6619 }
6620
6621
6622 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6623                                           const u8 *addr, const u8 *ssid,
6624                                           size_t ssid_len)
6625 {
6626         struct wpa_ssid *s;
6627         size_t i;
6628
6629         for (s = wpa_s->conf->ssid; s; s = s->next) {
6630                 if (s->disabled != 2)
6631                         continue;
6632                 if (ssid &&
6633                     (ssid_len != s->ssid_len ||
6634                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6635                         continue;
6636                 if (addr == NULL) {
6637                         if (s->mode == WPAS_MODE_P2P_GO)
6638                                 return s;
6639                         continue;
6640                 }
6641                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6642                         return s; /* peer is GO in the persistent group */
6643                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6644                         continue;
6645                 for (i = 0; i < s->num_p2p_clients; i++) {
6646                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6647                                       addr, ETH_ALEN) == 0)
6648                                 return s; /* peer is P2P client in persistent
6649                                            * group */
6650                 }
6651         }
6652
6653         return NULL;
6654 }
6655
6656
6657 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6658                                        const u8 *addr)
6659 {
6660         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6661                                  wpa_s->parent, NULL) > 0) {
6662                 /*
6663                  * This can happen if WPS provisioning step is not terminated
6664                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6665                  * peer was able to connect, there is no need to time out group
6666                  * formation after this, though. In addition, this is used with
6667                  * the initial connection wait on the GO as a separate formation
6668                  * timeout and as such, expected to be hit after the initial WPS
6669                  * provisioning step.
6670                  */
6671                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6672         }
6673         if (!wpa_s->p2p_go_group_formation_completed) {
6674                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6675                 wpa_s->p2p_go_group_formation_completed = 1;
6676                 wpa_s->global->p2p_group_formation = NULL;
6677                 wpa_s->p2p_in_provisioning = 0;
6678                 wpa_s->p2p_in_invitation = 0;
6679         }
6680         wpa_s->global->p2p_go_wait_client.sec = 0;
6681         if (addr == NULL)
6682                 return;
6683         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6684 }
6685
6686
6687 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6688                                         int group_added)
6689 {
6690         struct wpa_supplicant *group = wpa_s;
6691         if (wpa_s->global->p2p_group_formation)
6692                 group = wpa_s->global->p2p_group_formation;
6693         wpa_s = wpa_s->parent;
6694         offchannel_send_action_done(wpa_s);
6695         if (group_added)
6696                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6697         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6698         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6699                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6700                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6701                          wpa_s->p2p_persistent_id,
6702                          wpa_s->p2p_pd_before_go_neg,
6703                          wpa_s->p2p_go_ht40,
6704                          wpa_s->p2p_go_vht);
6705 }
6706
6707
6708 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6709 {
6710         if (!wpa_s->p2p_fallback_to_go_neg ||
6711             wpa_s->p2p_in_provisioning <= 5)
6712                 return 0;
6713
6714         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6715                 return 0; /* peer operating as a GO */
6716
6717         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6718                 "fallback to GO Negotiation");
6719         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6720
6721         return 1;
6722 }
6723
6724
6725 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6726 {
6727         struct wpa_supplicant *ifs;
6728
6729         if (wpa_s->wpa_state > WPA_SCANNING) {
6730                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6731                         "concurrent operation",
6732                         P2P_CONCURRENT_SEARCH_DELAY);
6733                 return P2P_CONCURRENT_SEARCH_DELAY;
6734         }
6735
6736         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6737                          radio_list) {
6738                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6739                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6740                                 "delay due to concurrent operation on "
6741                                 "interface %s",
6742                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6743                         return P2P_CONCURRENT_SEARCH_DELAY;
6744                 }
6745         }
6746
6747         return 0;
6748 }
6749
6750
6751 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6752                                      struct wpa_ssid *s, const u8 *addr,
6753                                      int iface_addr)
6754 {
6755         struct psk_list_entry *psk, *tmp;
6756         int changed = 0;
6757
6758         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6759                               list) {
6760                 if ((iface_addr && !psk->p2p &&
6761                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6762                     (!iface_addr && psk->p2p &&
6763                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6764                         wpa_dbg(wpa_s, MSG_DEBUG,
6765                                 "P2P: Remove persistent group PSK list entry for "
6766                                 MACSTR " p2p=%u",
6767                                 MAC2STR(psk->addr), psk->p2p);
6768                         dl_list_del(&psk->list);
6769                         os_free(psk);
6770                         changed++;
6771                 }
6772         }
6773
6774         return changed;
6775 }
6776
6777
6778 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6779                          const u8 *p2p_dev_addr,
6780                          const u8 *psk, size_t psk_len)
6781 {
6782         struct wpa_ssid *ssid = wpa_s->current_ssid;
6783         struct wpa_ssid *persistent;
6784         struct psk_list_entry *p, *last;
6785
6786         if (psk_len != sizeof(p->psk))
6787                 return;
6788
6789         if (p2p_dev_addr) {
6790                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6791                         " p2p_dev_addr=" MACSTR,
6792                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6793                 if (is_zero_ether_addr(p2p_dev_addr))
6794                         p2p_dev_addr = NULL;
6795         } else {
6796                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6797                         MAC2STR(mac_addr));
6798         }
6799
6800         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6801                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6802                 /* To be added to persistent group once created */
6803                 if (wpa_s->global->add_psk == NULL) {
6804                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6805                         if (wpa_s->global->add_psk == NULL)
6806                                 return;
6807                 }
6808                 p = wpa_s->global->add_psk;
6809                 if (p2p_dev_addr) {
6810                         p->p2p = 1;
6811                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6812                 } else {
6813                         p->p2p = 0;
6814                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6815                 }
6816                 os_memcpy(p->psk, psk, psk_len);
6817                 return;
6818         }
6819
6820         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6821                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6822                 return;
6823         }
6824
6825         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6826                                              ssid->ssid_len);
6827         if (!persistent) {
6828                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6829                 return;
6830         }
6831
6832         p = os_zalloc(sizeof(*p));
6833         if (p == NULL)
6834                 return;
6835         if (p2p_dev_addr) {
6836                 p->p2p = 1;
6837                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6838         } else {
6839                 p->p2p = 0;
6840                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6841         }
6842         os_memcpy(p->psk, psk, psk_len);
6843
6844         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
6845             (last = dl_list_last(&persistent->psk_list,
6846                                  struct psk_list_entry, list))) {
6847                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6848                         MACSTR " (p2p=%u) to make room for a new one",
6849                         MAC2STR(last->addr), last->p2p);
6850                 dl_list_del(&last->list);
6851                 os_free(last);
6852         }
6853
6854         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6855                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6856                                   p2p_dev_addr == NULL);
6857         if (p2p_dev_addr) {
6858                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6859                         MACSTR, MAC2STR(p2p_dev_addr));
6860         } else {
6861                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6862                         MAC2STR(mac_addr));
6863         }
6864         dl_list_add(&persistent->psk_list, &p->list);
6865
6866         if (wpa_s->parent->conf->update_config &&
6867             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6868                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6869 }
6870
6871
6872 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6873                                 struct wpa_ssid *s, const u8 *addr,
6874                                 int iface_addr)
6875 {
6876         int res;
6877
6878         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6879         if (res > 0 && wpa_s->conf->update_config &&
6880             wpa_config_write(wpa_s->confname, wpa_s->conf))
6881                 wpa_dbg(wpa_s, MSG_DEBUG,
6882                         "P2P: Failed to update configuration");
6883 }
6884
6885
6886 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6887                                       const u8 *peer, int iface_addr)
6888 {
6889         struct hostapd_data *hapd;
6890         struct hostapd_wpa_psk *psk, *prev, *rem;
6891         struct sta_info *sta;
6892
6893         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6894             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6895                 return;
6896
6897         /* Remove per-station PSK entry */
6898         hapd = wpa_s->ap_iface->bss[0];
6899         prev = NULL;
6900         psk = hapd->conf->ssid.wpa_psk;
6901         while (psk) {
6902                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6903                     (!iface_addr &&
6904                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6905                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6906                                 MACSTR " iface_addr=%d",
6907                                 MAC2STR(peer), iface_addr);
6908                         if (prev)
6909                                 prev->next = psk->next;
6910                         else
6911                                 hapd->conf->ssid.wpa_psk = psk->next;
6912                         rem = psk;
6913                         psk = psk->next;
6914                         os_free(rem);
6915                 } else {
6916                         prev = psk;
6917                         psk = psk->next;
6918                 }
6919         }
6920
6921         /* Disconnect from group */
6922         if (iface_addr)
6923                 sta = ap_get_sta(hapd, peer);
6924         else
6925                 sta = ap_get_sta_p2p(hapd, peer);
6926         if (sta) {
6927                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6928                         " (iface_addr=%d) from group",
6929                         MAC2STR(peer), iface_addr);
6930                 hostapd_drv_sta_deauth(hapd, sta->addr,
6931                                        WLAN_REASON_DEAUTH_LEAVING);
6932                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6933         }
6934 }
6935
6936
6937 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6938                             int iface_addr)
6939 {
6940         struct wpa_ssid *s;
6941         struct wpa_supplicant *w;
6942
6943         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6944
6945         /* Remove from any persistent group */
6946         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6947                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6948                         continue;
6949                 if (!iface_addr)
6950                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6951                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6952         }
6953
6954         /* Remove from any operating group */
6955         for (w = wpa_s->global->ifaces; w; w = w->next)
6956                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6957 }
6958
6959
6960 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6961 {
6962         struct wpa_supplicant *wpa_s = eloop_ctx;
6963         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6964 }
6965
6966
6967 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
6968 {
6969         struct wpa_supplicant *wpa_s = eloop_ctx;
6970
6971         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
6972         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
6973 }
6974
6975
6976 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
6977                                         struct wpa_ssid *ssid)
6978 {
6979         struct wpa_supplicant *iface;
6980
6981         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6982                 if (!iface->current_ssid ||
6983                     iface->current_ssid->frequency == freq ||
6984                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
6985                      !iface->current_ssid->p2p_group))
6986                         continue;
6987
6988                 /* Remove the connection with least priority */
6989                 if (!wpas_is_p2p_prioritized(iface)) {
6990                         /* STA connection has priority over existing
6991                          * P2P connection, so remove the interface. */
6992                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
6993                         eloop_register_timeout(0, 0,
6994                                                wpas_p2p_group_freq_conflict,
6995                                                iface, NULL);
6996                         /* If connection in progress is P2P connection, do not
6997                          * proceed for the connection. */
6998                         if (wpa_s == iface)
6999                                 return -1;
7000                         else
7001                                 return 0;
7002                 } else {
7003                         /* P2P connection has priority, disable the STA network
7004                          */
7005                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7006                                                        ssid);
7007                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7008                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7009                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7010                                   ETH_ALEN);
7011                         /* If P2P connection is in progress, continue
7012                          * connecting...*/
7013                         if (wpa_s == iface)
7014                                 return 0;
7015                         else
7016                                 return -1;
7017                 }
7018         }
7019
7020         return 0;
7021 }
7022
7023
7024 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7025 {
7026         struct wpa_ssid *ssid = wpa_s->current_ssid;
7027
7028         if (ssid == NULL || !ssid->p2p_group)
7029                 return 0;
7030
7031         if (wpa_s->p2p_last_4way_hs_fail &&
7032             wpa_s->p2p_last_4way_hs_fail == ssid) {
7033                 u8 go_dev_addr[ETH_ALEN];
7034                 struct wpa_ssid *persistent;
7035
7036                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7037                                               ssid->ssid,
7038                                               ssid->ssid_len) <= 0) {
7039                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7040                         goto disconnect;
7041                 }
7042
7043                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7044                         MACSTR, MAC2STR(go_dev_addr));
7045                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7046                                                      ssid->ssid,
7047                                                      ssid->ssid_len);
7048                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7049                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7050                         goto disconnect;
7051                 }
7052                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7053                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7054                                persistent->id);
7055         disconnect:
7056                 wpa_s->p2p_last_4way_hs_fail = NULL;
7057                 /*
7058                  * Remove the group from a timeout to avoid issues with caller
7059                  * continuing to use the interface if this is on a P2P group
7060                  * interface.
7061                  */
7062                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7063                                        wpa_s, NULL);
7064                 return 1;
7065         }
7066
7067         wpa_s->p2p_last_4way_hs_fail = ssid;
7068         return 0;
7069 }
7070
7071
7072 #ifdef CONFIG_WPS_NFC
7073
7074 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7075                                              struct wpabuf *p2p)
7076 {
7077         struct wpabuf *ret;
7078         size_t wsc_len;
7079
7080         if (p2p == NULL) {
7081                 wpabuf_free(wsc);
7082                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7083                 return NULL;
7084         }
7085
7086         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7087         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7088         if (ret == NULL) {
7089                 wpabuf_free(wsc);
7090                 wpabuf_free(p2p);
7091                 return NULL;
7092         }
7093
7094         wpabuf_put_be16(ret, wsc_len);
7095         if (wsc)
7096                 wpabuf_put_buf(ret, wsc);
7097         wpabuf_put_be16(ret, wpabuf_len(p2p));
7098         wpabuf_put_buf(ret, p2p);
7099
7100         wpabuf_free(wsc);
7101         wpabuf_free(p2p);
7102         wpa_hexdump_buf(MSG_DEBUG,
7103                         "P2P: Generated NFC connection handover message", ret);
7104
7105         if (ndef && ret) {
7106                 struct wpabuf *tmp;
7107                 tmp = ndef_build_p2p(ret);
7108                 wpabuf_free(ret);
7109                 if (tmp == NULL) {
7110                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7111                         return NULL;
7112                 }
7113                 ret = tmp;
7114         }
7115
7116         return ret;
7117 }
7118
7119
7120 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7121                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7122 {
7123         struct wpa_supplicant *iface;
7124
7125         if (go_dev_addr)
7126                 os_memset(go_dev_addr, 0, ETH_ALEN);
7127         if (ssid)
7128                 *ssid = NULL;
7129         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7130                 if (iface->wpa_state < WPA_ASSOCIATING ||
7131                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7132                     !iface->current_ssid->p2p_group ||
7133                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7134                         continue;
7135                 if (ssid)
7136                         *ssid = iface->current_ssid;
7137                 if (go_dev_addr)
7138                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7139                 return iface->assoc_freq;
7140         }
7141         return 0;
7142 }
7143
7144
7145 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7146                                           int ndef)
7147 {
7148         struct wpabuf *wsc, *p2p;
7149         struct wpa_ssid *ssid;
7150         u8 go_dev_addr[ETH_ALEN];
7151         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7152
7153         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7154                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7155                 return NULL;
7156         }
7157
7158         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7159             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7160                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7161                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7162                 return NULL;
7163         }
7164
7165         if (cli_freq == 0) {
7166                 wsc = wps_build_nfc_handover_req_p2p(
7167                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7168         } else
7169                 wsc = NULL;
7170         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7171                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7172                                          ssid ? ssid->ssid_len : 0);
7173
7174         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7175 }
7176
7177
7178 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7179                                           int ndef, int tag)
7180 {
7181         struct wpabuf *wsc, *p2p;
7182         struct wpa_ssid *ssid;
7183         u8 go_dev_addr[ETH_ALEN];
7184         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7185
7186         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7187                 return NULL;
7188
7189         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7190             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7191                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7192                 return NULL;
7193
7194         if (cli_freq == 0) {
7195                 wsc = wps_build_nfc_handover_sel_p2p(
7196                         wpa_s->parent->wps,
7197                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7198                         DEV_PW_NFC_CONNECTION_HANDOVER,
7199                         wpa_s->conf->wps_nfc_dh_pubkey,
7200                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7201         } else
7202                 wsc = NULL;
7203         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7204                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7205                                          ssid ? ssid->ssid_len : 0);
7206
7207         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7208 }
7209
7210
7211 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7212                                    struct p2p_nfc_params *params)
7213 {
7214         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7215                    "connection handover (freq=%d)",
7216                    params->go_freq);
7217
7218         if (params->go_freq && params->go_ssid_len) {
7219                 wpa_s->p2p_wps_method = WPS_NFC;
7220                 wpa_s->pending_join_wps_method = WPS_NFC;
7221                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7222                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7223                           ETH_ALEN);
7224                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7225                                            params->go_ssid,
7226                                            params->go_ssid_len);
7227         }
7228
7229         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7230                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7231                                 params->go_freq, -1, 0, 1, 1);
7232 }
7233
7234
7235 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7236                                   struct p2p_nfc_params *params, int tag)
7237 {
7238         int res, persistent;
7239         struct wpa_ssid *ssid;
7240
7241         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7242                    "connection handover");
7243         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7244                 ssid = wpa_s->current_ssid;
7245                 if (ssid == NULL)
7246                         continue;
7247                 if (ssid->mode != WPAS_MODE_P2P_GO)
7248                         continue;
7249                 if (wpa_s->ap_iface == NULL)
7250                         continue;
7251                 break;
7252         }
7253         if (wpa_s == NULL) {
7254                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7255                 return -1;
7256         }
7257
7258         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7259             DEV_PW_NFC_CONNECTION_HANDOVER &&
7260             !wpa_s->parent->p2p_oob_dev_pw) {
7261                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7262                 return -1;
7263         }
7264         res = wpas_ap_wps_add_nfc_pw(
7265                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7266                 wpa_s->parent->p2p_oob_dev_pw,
7267                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7268                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7269         if (res)
7270                 return res;
7271
7272         if (!tag) {
7273                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7274                 return 0;
7275         }
7276
7277         if (!params->peer ||
7278             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7279                 return 0;
7280
7281         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7282                    " to join", MAC2STR(params->peer->p2p_device_addr));
7283
7284         wpa_s->global->p2p_invite_group = wpa_s;
7285         persistent = ssid->p2p_persistent_group &&
7286                 wpas_p2p_get_persistent(wpa_s->parent,
7287                                         params->peer->p2p_device_addr,
7288                                         ssid->ssid, ssid->ssid_len);
7289         wpa_s->parent->pending_invite_ssid_id = -1;
7290
7291         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7292                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7293                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7294                           wpa_s->global->p2p_dev_addr, persistent, 0,
7295                           wpa_s->parent->p2p_oob_dev_pw_id);
7296 }
7297
7298
7299 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7300                                     struct p2p_nfc_params *params,
7301                                     int forced_freq)
7302 {
7303         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7304                    "connection handover");
7305         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7306                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7307                                 forced_freq, -1, 0, 1, 1);
7308 }
7309
7310
7311 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7312                                     struct p2p_nfc_params *params,
7313                                     int forced_freq)
7314 {
7315         int res;
7316
7317         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7318                    "connection handover");
7319         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7320                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7321                                forced_freq, -1, 0, 1, 1);
7322         if (res)
7323                 return res;
7324
7325         res = wpas_p2p_listen(wpa_s, 60);
7326         if (res) {
7327                 p2p_unauthorize(wpa_s->global->p2p,
7328                                 params->peer->p2p_device_addr);
7329         }
7330
7331         return res;
7332 }
7333
7334
7335 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7336                                             const struct wpabuf *data,
7337                                             int sel, int tag, int forced_freq)
7338 {
7339         const u8 *pos, *end;
7340         u16 len, id;
7341         struct p2p_nfc_params params;
7342         int res;
7343
7344         os_memset(&params, 0, sizeof(params));
7345         params.sel = sel;
7346
7347         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7348
7349         pos = wpabuf_head(data);
7350         end = pos + wpabuf_len(data);
7351
7352         if (end - pos < 2) {
7353                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7354                            "attributes");
7355                 return -1;
7356         }
7357         len = WPA_GET_BE16(pos);
7358         pos += 2;
7359         if (pos + len > end) {
7360                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7361                            "attributes");
7362                 return -1;
7363         }
7364         params.wsc_attr = pos;
7365         params.wsc_len = len;
7366         pos += len;
7367
7368         if (end - pos < 2) {
7369                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7370                            "attributes");
7371                 return -1;
7372         }
7373         len = WPA_GET_BE16(pos);
7374         pos += 2;
7375         if (pos + len > end) {
7376                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7377                            "attributes");
7378                 return -1;
7379         }
7380         params.p2p_attr = pos;
7381         params.p2p_len = len;
7382         pos += len;
7383
7384         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7385                     params.wsc_attr, params.wsc_len);
7386         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7387                     params.p2p_attr, params.p2p_len);
7388         if (pos < end) {
7389                 wpa_hexdump(MSG_DEBUG,
7390                             "P2P: Ignored extra data after P2P attributes",
7391                             pos, end - pos);
7392         }
7393
7394         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7395         if (res)
7396                 return res;
7397
7398         if (params.next_step == NO_ACTION)
7399                 return 0;
7400
7401         if (params.next_step == BOTH_GO) {
7402                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7403                         MAC2STR(params.peer->p2p_device_addr));
7404                 return 0;
7405         }
7406
7407         if (params.next_step == PEER_CLIENT) {
7408                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7409                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7410                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7411                                 " ssid=\"%s\"",
7412                                 MAC2STR(params.peer->p2p_device_addr),
7413                                 params.go_freq,
7414                                 MAC2STR(params.go_dev_addr),
7415                                 wpa_ssid_txt(params.go_ssid,
7416                                              params.go_ssid_len));
7417                 } else {
7418                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7419                                 "peer=" MACSTR " freq=%d",
7420                                 MAC2STR(params.peer->p2p_device_addr),
7421                                 params.go_freq);
7422                 }
7423                 return 0;
7424         }
7425
7426         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7427                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7428                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7429                 return 0;
7430         }
7431
7432         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7433         wpa_s->p2p_oob_dev_pw = NULL;
7434
7435         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7436                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7437                            "received");
7438                 return -1;
7439         }
7440
7441         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7442         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7443         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7444                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7445         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7446                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7447         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7448
7449         if (tag) {
7450                 if (id < 0x10) {
7451                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7452                                    "peer OOB Device Password Id %u", id);
7453                         return -1;
7454                 }
7455                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7456                            "Device Password Id %u", id);
7457                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7458                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7459                                 params.oob_dev_pw_len -
7460                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7461                 wpa_s->p2p_oob_dev_pw_id = id;
7462                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7463                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7464                         params.oob_dev_pw_len -
7465                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7466                 if (wpa_s->p2p_oob_dev_pw == NULL)
7467                         return -1;
7468
7469                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7470                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7471                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7472                         return -1;
7473         } else {
7474                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7475                            "without Device Password");
7476                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7477         }
7478
7479         switch (params.next_step) {
7480         case NO_ACTION:
7481         case BOTH_GO:
7482         case PEER_CLIENT:
7483                 /* already covered above */
7484                 return 0;
7485         case JOIN_GROUP:
7486                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7487         case AUTH_JOIN:
7488                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7489         case INIT_GO_NEG:
7490                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7491         case RESP_GO_NEG:
7492                 /* TODO: use own OOB Dev Pw */
7493                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7494         }
7495
7496         return -1;
7497 }
7498
7499
7500 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7501                              const struct wpabuf *data, int forced_freq)
7502 {
7503         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7504                 return -1;
7505
7506         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7507 }
7508
7509
7510 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7511                                  const struct wpabuf *req,
7512                                  const struct wpabuf *sel, int forced_freq)
7513 {
7514         struct wpabuf *tmp;
7515         int ret;
7516
7517         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7518                 return -1;
7519
7520         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7521
7522         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7523                           wpabuf_head(req), wpabuf_len(req));
7524         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7525                           wpabuf_head(sel), wpabuf_len(sel));
7526         if (forced_freq)
7527                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7528         tmp = ndef_parse_p2p(init ? sel : req);
7529         if (tmp == NULL) {
7530                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7531                 return -1;
7532         }
7533
7534         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7535                                                forced_freq);
7536         wpabuf_free(tmp);
7537
7538         return ret;
7539 }
7540
7541
7542 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7543 {
7544         const u8 *if_addr;
7545         int go_intent = wpa_s->conf->p2p_go_intent;
7546         struct wpa_supplicant *iface;
7547
7548         if (wpa_s->global->p2p == NULL)
7549                 return -1;
7550
7551         if (!enabled) {
7552                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7553                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7554                 {
7555                         if (!iface->ap_iface)
7556                                 continue;
7557                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7558                 }
7559                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7560                                                  0, NULL);
7561                 if (wpa_s->p2p_nfc_tag_enabled)
7562                         wpas_p2p_remove_pending_group_interface(wpa_s);
7563                 wpa_s->p2p_nfc_tag_enabled = 0;
7564                 return 0;
7565         }
7566
7567         if (wpa_s->global->p2p_disabled)
7568                 return -1;
7569
7570         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7571             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7572             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7573             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7574                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7575                            "to allow static handover cases");
7576                 return -1;
7577         }
7578
7579         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7580
7581         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7582         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7583         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7584         if (wpa_s->p2p_oob_dev_pw == NULL)
7585                 return -1;
7586         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7587
7588         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7589             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7590                 /*
7591                  * P2P Group Interface present and the command came on group
7592                  * interface, so enable the token for the current interface.
7593                  */
7594                 wpa_s->create_p2p_iface = 0;
7595         } else {
7596                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7597         }
7598
7599         if (wpa_s->create_p2p_iface) {
7600                 enum wpa_driver_if_type iftype;
7601                 /* Prepare to add a new interface for the group */
7602                 iftype = WPA_IF_P2P_GROUP;
7603                 if (go_intent == 15)
7604                         iftype = WPA_IF_P2P_GO;
7605                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7606                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7607                                    "interface for the group");
7608                         return -1;
7609                 }
7610
7611                 if_addr = wpa_s->pending_interface_addr;
7612         } else
7613                 if_addr = wpa_s->own_addr;
7614
7615         wpa_s->p2p_nfc_tag_enabled = enabled;
7616
7617         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7618                 struct hostapd_data *hapd;
7619                 if (iface->ap_iface == NULL)
7620                         continue;
7621                 hapd = iface->ap_iface->bss[0];
7622                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7623                 hapd->conf->wps_nfc_dh_pubkey =
7624                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7625                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7626                 hapd->conf->wps_nfc_dh_privkey =
7627                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7628                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7629                 hapd->conf->wps_nfc_dev_pw =
7630                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7631                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7632
7633                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7634                         wpa_dbg(iface, MSG_DEBUG,
7635                                 "P2P: Failed to enable NFC Tag for GO");
7636                 }
7637         }
7638         p2p_set_authorized_oob_dev_pw_id(
7639                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7640                 if_addr);
7641
7642         return 0;
7643 }
7644
7645 #endif /* CONFIG_WPS_NFC */