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 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 129
 130
 131 /*
 132  * Get the number of concurrent channels that the HW can operate, but that are
 133  * currently not in use by any of the wpa_supplicant interfaces.
 134  */
 135 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 136 {
 137         int *freqs;
 138         int num, unused;
 139
 140         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 141         if (!freqs)
 142                 return -1;
 143
 144         num = get_shared_radio_freqs(wpa_s, freqs,
 145                                      wpa_s->num_multichan_concurrent);
 146         os_free(freqs);
 147
 148         unused = wpa_s->num_multichan_concurrent - num;
 149         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 150         return unused;
 151 }
 152
 153
 154 /*
 155  * Get the frequencies that are currently in use by one or more of the virtual
 156  * interfaces, and that are also valid for P2P operation.
 157  */
 158 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 159                                      int *p2p_freqs, unsigned int len)
 160 {
 161         int *freqs;
 162         unsigned int num, i, j;
 163
 164         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 165         if (!freqs)
 166                 return -1;
 167
 168         num = get_shared_radio_freqs(wpa_s, freqs,
 169                                      wpa_s->num_multichan_concurrent);
 170
 171         os_memset(p2p_freqs, 0, sizeof(int) * len);
 172
 173         for (i = 0, j = 0; i < num && j < len; i++) {
 174                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 175                         p2p_freqs[j++] = freqs[i];
 176         }
 177
 178         os_free(freqs);
 179
 180         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 181
 182         return j;
 183 }
 184
 185
 186 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 187                                              int freq)
 188 {
 189         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 190                 return;
 191         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 192             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 193             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 194                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 195                            freq);
 196                 freq = 0;
 197         }
 198         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 199 }
 200
 201
 202 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 203                                       struct wpa_scan_results *scan_res)
 204 {
 205         size_t i;
 206
 207         if (wpa_s->p2p_scan_work) {
 208                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 209                 wpa_s->p2p_scan_work = NULL;
 210                 radio_work_done(work);
 211         }
 212
 213         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 214                 return;
 215
 216         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 217                    (int) scan_res->num);
 218
 219         for (i = 0; i < scan_res->num; i++) {
 220                 struct wpa_scan_res *bss = scan_res->res[i];
 221                 struct os_reltime time_tmp_age, entry_ts;
 222                 const u8 *ies;
 223                 size_t ies_len;
 224
 225                 time_tmp_age.sec = bss->age / 1000;
 226                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 227                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 228
 229                 ies = (const u8 *) (bss + 1);
 230                 ies_len = bss->ie_len;
 231                 if (bss->beacon_ie_len > 0 &&
 232                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 233                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 234                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 235                                    MACSTR, MAC2STR(bss->bssid));
 236                         ies = ies + ies_len;
 237                         ies_len = bss->beacon_ie_len;
 238                 }
 239
 240
 241                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 242                                          bss->freq, &entry_ts, bss->level,
 243                                          ies, ies_len) > 0)
 244                         break;
 245         }
 246
 247         p2p_scan_res_handled(wpa_s->global->p2p);
 248 }
 249
 250
 251 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 252 {
 253         struct wpa_supplicant *wpa_s = work->wpa_s;
 254         struct wpa_driver_scan_params *params = work->ctx;
 255         int ret;
 256
 257         if (deinit) {
 258                 if (!work->started) {
 259                         wpa_scan_free_params(params);
 260                         return;
 261                 }
 262
 263                 wpa_s->p2p_scan_work = NULL;
 264                 return;
 265         }
 266
 267         ret = wpa_drv_scan(wpa_s, params);
 268         wpa_scan_free_params(params);
 269         work->ctx = NULL;
 270         if (ret) {
 271                 radio_work_done(work);
 272                 return;
 273         }
 274
 275         os_get_reltime(&wpa_s->scan_trigger_time);
 276         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 277         wpa_s->own_scan_requested = 1;
 278         wpa_s->p2p_scan_work = work;
 279 }
 280
 281
 282 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 283                          unsigned int num_req_dev_types,
 284                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 285 {
 286         struct wpa_supplicant *wpa_s = ctx;
 287         struct wpa_driver_scan_params *params = NULL;
 288         struct wpabuf *wps_ie, *ies;
 289         size_t ielen;
 290         u8 *n;
 291
 292         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 293                 return -1;
 294
 295         if (wpa_s->p2p_scan_work) {
 296                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 297                 return -1;
 298         }
 299
 300         params = os_zalloc(sizeof(*params));
 301         if (params == NULL)
 302                 return -1;
 303
 304         /* P2P Wildcard SSID */
 305         params->num_ssids = 1;
 306         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 307         if (n == NULL)
 308                 goto fail;
 309         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 310         params->ssids[0].ssid = n;
 311         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 312
 313         wpa_s->wps->dev.p2p = 1;
 314         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 315                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 316                                         num_req_dev_types, req_dev_types);
 317         if (wps_ie == NULL)
 318                 goto fail;
 319
 320         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 321         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 322         if (ies == NULL) {
 323                 wpabuf_free(wps_ie);
 324                 goto fail;
 325         }
 326         wpabuf_put_buf(ies, wps_ie);
 327         wpabuf_free(wps_ie);
 328
 329         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 330
 331         params->p2p_probe = 1;
 332         n = os_malloc(wpabuf_len(ies));
 333         if (n == NULL) {
 334                 wpabuf_free(ies);
 335                 goto fail;
 336         }
 337         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 338         params->extra_ies = n;
 339         params->extra_ies_len = wpabuf_len(ies);
 340         wpabuf_free(ies);
 341
 342         switch (type) {
 343         case P2P_SCAN_SOCIAL:
 344                 params->freqs = os_malloc(4 * sizeof(int));
 345                 if (params->freqs == NULL)
 346                         goto fail;
 347                 params->freqs[0] = 2412;
 348                 params->freqs[1] = 2437;
 349                 params->freqs[2] = 2462;
 350                 params->freqs[3] = 0;
 351                 break;
 352         case P2P_SCAN_FULL:
 353                 break;
 354         case P2P_SCAN_SOCIAL_PLUS_ONE:
 355                 params->freqs = os_malloc(5 * sizeof(int));
 356                 if (params->freqs == NULL)
 357                         goto fail;
 358                 params->freqs[0] = 2412;
 359                 params->freqs[1] = 2437;
 360                 params->freqs[2] = 2462;
 361                 params->freqs[3] = freq;
 362                 params->freqs[4] = 0;
 363                 break;
 364         }
 365
 366         radio_remove_works(wpa_s, "p2p-scan", 0);
 367         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 368                            params) < 0)
 369                 goto fail;
 370         return 0;
 371
 372 fail:
 373         wpa_scan_free_params(params);
 374         return -1;
 375 }
 376
 377
 378 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 379 {
 380         switch (p2p_group_interface) {
 381         case P2P_GROUP_INTERFACE_PENDING:
 382                 return WPA_IF_P2P_GROUP;
 383         case P2P_GROUP_INTERFACE_GO:
 384                 return WPA_IF_P2P_GO;
 385         case P2P_GROUP_INTERFACE_CLIENT:
 386                 return WPA_IF_P2P_CLIENT;
 387         }
 388
 389         return WPA_IF_P2P_GROUP;
 390 }
 391
 392
 393 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 394                                                   const u8 *ssid,
 395                                                   size_t ssid_len, int *go)
 396 {
 397         struct wpa_ssid *s;
 398
 399         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 400                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 401                         if (s->disabled != 0 || !s->p2p_group ||
 402                             s->ssid_len != ssid_len ||
 403                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 404                                 continue;
 405                         if (s->mode == WPAS_MODE_P2P_GO &&
 406                             s != wpa_s->current_ssid)
 407                                 continue;
 408                         if (go)
 409                                 *go = s->mode == WPAS_MODE_P2P_GO;
 410                         return wpa_s;
 411                 }
 412         }
 413
 414         return NULL;
 415 }
 416
 417
 418 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 419                                  enum p2p_group_removal_reason removal_reason)
 420 {
 421         struct wpa_ssid *ssid;
 422         char *gtype;
 423         const char *reason;
 424
 425         ssid = wpa_s->current_ssid;
 426         if (ssid == NULL) {
 427                 /*
 428                  * The current SSID was not known, but there may still be a
 429                  * pending P2P group interface waiting for provisioning or a
 430                  * P2P group that is trying to reconnect.
 431                  */
 432                 ssid = wpa_s->conf->ssid;
 433                 while (ssid) {
 434                         if (ssid->p2p_group && ssid->disabled != 2)
 435                                 break;
 436                         ssid = ssid->next;
 437                 }
 438                 if (ssid == NULL &&
 439                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 440                 {
 441                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 442                                    "not found");
 443                         return -1;
 444                 }
 445         }
 446         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 447                 gtype = "GO";
 448         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 449                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 450                 wpa_s->reassociate = 0;
 451                 wpa_s->disconnected = 1;
 452                 wpa_supplicant_deauthenticate(wpa_s,
 453                                               WLAN_REASON_DEAUTH_LEAVING);
 454                 gtype = "client";
 455         } else
 456                 gtype = "GO";
 457         if (wpa_s->cross_connect_in_use) {
 458                 wpa_s->cross_connect_in_use = 0;
 459                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 460                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 461                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 462         }
 463         switch (removal_reason) {
 464         case P2P_GROUP_REMOVAL_REQUESTED:
 465                 reason = " reason=REQUESTED";
 466                 break;
 467         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 468                 reason = " reason=FORMATION_FAILED";
 469                 break;
 470         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 471                 reason = " reason=IDLE";
 472                 break;
 473         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 474                 reason = " reason=UNAVAILABLE";
 475                 break;
 476         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 477                 reason = " reason=GO_ENDING_SESSION";
 478                 break;
 479         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 480                 reason = " reason=PSK_FAILURE";
 481                 break;
 482         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 483                 reason = " reason=FREQ_CONFLICT";
 484                 break;
 485         default:
 486                 reason = "";
 487                 break;
 488         }
 489         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 490                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 491                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 492                                wpa_s->ifname, gtype, reason);
 493         }
 494
 495         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 496                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 497         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 498                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 499         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 500                                  wpa_s->parent, NULL) > 0) {
 501                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 502                            "timeout");
 503                 wpa_s->p2p_in_provisioning = 0;
 504         }
 505
 506         wpa_s->p2p_in_invitation = 0;
 507
 508         /*
 509          * Make sure wait for the first client does not remain active after the
 510          * group has been removed.
 511          */
 512         wpa_s->global->p2p_go_wait_client.sec = 0;
 513
 514         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 515                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 516
 517         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 518                 struct wpa_global *global;
 519                 char *ifname;
 520                 enum wpa_driver_if_type type;
 521                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 522                         wpa_s->ifname);
 523                 global = wpa_s->global;
 524                 ifname = os_strdup(wpa_s->ifname);
 525                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 526                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 527                 wpa_s = global->ifaces;
 528                 if (wpa_s && ifname)
 529                         wpa_drv_if_remove(wpa_s, type, ifname);
 530                 os_free(ifname);
 531                 return 1;
 532         }
 533
 534         if (!wpa_s->p2p_go_group_formation_completed) {
 535                 wpa_s->global->p2p_group_formation = NULL;
 536                 wpa_s->p2p_in_provisioning = 0;
 537         }
 538
 539         wpa_s->show_group_started = 0;
 540         os_free(wpa_s->go_params);
 541         wpa_s->go_params = NULL;
 542
 543         wpa_s->waiting_presence_resp = 0;
 544
 545         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 546         if (ssid && (ssid->p2p_group ||
 547                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 548                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 549                 int id = ssid->id;
 550                 if (ssid == wpa_s->current_ssid) {
 551                         wpa_sm_set_config(wpa_s->wpa, NULL);
 552                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 553                         wpa_s->current_ssid = NULL;
 554                 }
 555                 /*
 556                  * Networks objects created during any P2P activities are not
 557                  * exposed out as they might/will confuse certain non-P2P aware
 558                  * applications since these network objects won't behave like
 559                  * regular ones.
 560                  *
 561                  * Likewise, we don't send out network removed signals for such
 562                  * network objects.
 563                  */
 564                 wpa_config_remove_network(wpa_s->conf, id);
 565                 wpa_supplicant_clear_status(wpa_s);
 566                 wpa_supplicant_cancel_sched_scan(wpa_s);
 567         } else {
 568                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 569                            "found");
 570         }
 571         if (wpa_s->ap_iface)
 572                 wpa_supplicant_ap_deinit(wpa_s);
 573         else
 574                 wpa_drv_deinit_p2p_cli(wpa_s);
 575
 576         return 0;
 577 }
 578
 579
 580 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 581                                      u8 *go_dev_addr,
 582                                      const u8 *ssid, size_t ssid_len)
 583 {
 584         struct wpa_bss *bss;
 585         const u8 *bssid;
 586         struct wpabuf *p2p;
 587         u8 group_capab;
 588         const u8 *addr;
 589
 590         if (wpa_s->go_params)
 591                 bssid = wpa_s->go_params->peer_interface_addr;
 592         else
 593                 bssid = wpa_s->bssid;
 594
 595         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 596         if (bss == NULL && wpa_s->go_params &&
 597             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 598                 bss = wpa_bss_get_p2p_dev_addr(
 599                         wpa_s, wpa_s->go_params->peer_device_addr);
 600         if (bss == NULL) {
 601                 u8 iface_addr[ETH_ALEN];
 602                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 603                                            iface_addr) == 0)
 604                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 605         }
 606         if (bss == NULL) {
 607                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 608                            "group is persistent - BSS " MACSTR " not found",
 609                            MAC2STR(bssid));
 610                 return 0;
 611         }
 612
 613         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 614         if (p2p == NULL)
 615                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 616                                                          P2P_IE_VENDOR_TYPE);
 617         if (p2p == NULL) {
 618                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 619                            "group is persistent - BSS " MACSTR
 620                            " did not include P2P IE", MAC2STR(bssid));
 621                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 622                             (u8 *) (bss + 1), bss->ie_len);
 623                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 624                             ((u8 *) bss + 1) + bss->ie_len,
 625                             bss->beacon_ie_len);
 626                 return 0;
 627         }
 628
 629         group_capab = p2p_get_group_capab(p2p);
 630         addr = p2p_get_go_dev_addr(p2p);
 631         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 632                    "group_capab=0x%x", group_capab);
 633         if (addr) {
 634                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 635                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 636                            MAC2STR(addr));
 637         } else
 638                 os_memset(go_dev_addr, 0, ETH_ALEN);
 639         wpabuf_free(p2p);
 640
 641         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 642                    "go_dev_addr=" MACSTR,
 643                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 644
 645         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 646 }
 647
 648
 649 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 650                                            struct wpa_ssid *ssid,
 651                                            const u8 *go_dev_addr)
 652 {
 653         struct wpa_ssid *s;
 654         int changed = 0;
 655
 656         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 657                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 658         for (s = wpa_s->conf->ssid; s; s = s->next) {
 659                 if (s->disabled == 2 &&
 660                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 661                     s->ssid_len == ssid->ssid_len &&
 662                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 663                         break;
 664         }
 665
 666         if (s) {
 667                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 668                            "entry");
 669                 if (ssid->passphrase && !s->passphrase)
 670                         changed = 1;
 671                 else if (ssid->passphrase && s->passphrase &&
 672                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 673                         changed = 1;
 674         } else {
 675                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 676                            "entry");
 677                 changed = 1;
 678                 s = wpa_config_add_network(wpa_s->conf);
 679                 if (s == NULL)
 680                         return -1;
 681
 682                 /*
 683                  * Instead of network_added we emit persistent_group_added
 684                  * notification. Also to keep the defense checks in
 685                  * persistent_group obj registration method, we set the
 686                  * relevant flags in s to designate it as a persistent group.
 687                  */
 688                 s->p2p_group = 1;
 689                 s->p2p_persistent_group = 1;
 690                 wpas_notify_persistent_group_added(wpa_s, s);
 691                 wpa_config_set_network_defaults(s);
 692         }
 693
 694         s->p2p_group = 1;
 695         s->p2p_persistent_group = 1;
 696         s->disabled = 2;
 697         s->bssid_set = 1;
 698         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 699         s->mode = ssid->mode;
 700         s->auth_alg = WPA_AUTH_ALG_OPEN;
 701         s->key_mgmt = WPA_KEY_MGMT_PSK;
 702         s->proto = WPA_PROTO_RSN;
 703         s->pairwise_cipher = WPA_CIPHER_CCMP;
 704         s->export_keys = 1;
 705         if (ssid->passphrase) {
 706                 os_free(s->passphrase);
 707                 s->passphrase = os_strdup(ssid->passphrase);
 708         }
 709         if (ssid->psk_set) {
 710                 s->psk_set = 1;
 711                 os_memcpy(s->psk, ssid->psk, 32);
 712         }
 713         if (s->passphrase && !s->psk_set)
 714                 wpa_config_update_psk(s);
 715         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 716                 os_free(s->ssid);
 717                 s->ssid = os_malloc(ssid->ssid_len);
 718         }
 719         if (s->ssid) {
 720                 s->ssid_len = ssid->ssid_len;
 721                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 722         }
 723         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 724                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 725                 wpa_s->global->add_psk = NULL;
 726                 changed = 1;
 727         }
 728
 729         if (changed && wpa_s->conf->update_config &&
 730             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 731                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 732         }
 733
 734         return s->id;
 735 }
 736
 737
 738 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 739                                                  const u8 *addr)
 740 {
 741         struct wpa_ssid *ssid, *s;
 742         u8 *n;
 743         size_t i;
 744         int found = 0;
 745
 746         ssid = wpa_s->current_ssid;
 747         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 748             !ssid->p2p_persistent_group)
 749                 return;
 750
 751         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 752                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 753                         continue;
 754
 755                 if (s->ssid_len == ssid->ssid_len &&
 756                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 757                         break;
 758         }
 759
 760         if (s == NULL)
 761                 return;
 762
 763         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 764                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 765                               ETH_ALEN) != 0)
 766                         continue;
 767
 768                 if (i == s->num_p2p_clients - 1)
 769                         return; /* already the most recent entry */
 770
 771                 /* move the entry to mark it most recent */
 772                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 773                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 774                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 775                 os_memcpy(s->p2p_client_list +
 776                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 777                 found = 1;
 778                 break;
 779         }
 780
 781         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 782                 n = os_realloc_array(s->p2p_client_list,
 783                                      s->num_p2p_clients + 1, ETH_ALEN);
 784                 if (n == NULL)
 785                         return;
 786                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 787                 s->p2p_client_list = n;
 788                 s->num_p2p_clients++;
 789         } else if (!found) {
 790                 /* Not enough room for an additional entry - drop the oldest
 791                  * entry */
 792                 os_memmove(s->p2p_client_list,
 793                            s->p2p_client_list + ETH_ALEN,
 794                            (s->num_p2p_clients - 1) * ETH_ALEN);
 795                 os_memcpy(s->p2p_client_list +
 796                           (s->num_p2p_clients - 1) * ETH_ALEN,
 797                           addr, ETH_ALEN);
 798         }
 799
 800         if (wpa_s->parent->conf->update_config &&
 801             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 802                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 803 }
 804
 805
 806 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 807                                            int success)
 808 {
 809         struct wpa_ssid *ssid;
 810         const char *ssid_txt;
 811         int client;
 812         int persistent;
 813         u8 go_dev_addr[ETH_ALEN];
 814         int network_id = -1;
 815
 816         /*
 817          * This callback is likely called for the main interface. Update wpa_s
 818          * to use the group interface if a new interface was created for the
 819          * group.
 820          */
 821         if (wpa_s->global->p2p_group_formation)
 822                 wpa_s = wpa_s->global->p2p_group_formation;
 823         if (wpa_s->p2p_go_group_formation_completed) {
 824                 wpa_s->global->p2p_group_formation = NULL;
 825                 wpa_s->p2p_in_provisioning = 0;
 826         }
 827         wpa_s->p2p_in_invitation = 0;
 828
 829         if (!success) {
 830                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 831                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 832                 wpas_p2p_group_delete(wpa_s,
 833                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 834                 return;
 835         }
 836
 837         wpa_msg_global(wpa_s->parent, MSG_INFO,
 838                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 839
 840         ssid = wpa_s->current_ssid;
 841         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 842                 ssid->mode = WPAS_MODE_P2P_GO;
 843                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 844                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 845         }
 846
 847         persistent = 0;
 848         if (ssid) {
 849                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 850                 client = ssid->mode == WPAS_MODE_INFRA;
 851                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 852                         persistent = ssid->p2p_persistent_group;
 853                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 854                                   ETH_ALEN);
 855                 } else
 856                         persistent = wpas_p2p_persistent_group(wpa_s,
 857                                                                go_dev_addr,
 858                                                                ssid->ssid,
 859                                                                ssid->ssid_len);
 860         } else {
 861                 ssid_txt = "";
 862                 client = wpa_s->p2p_group_interface ==
 863                         P2P_GROUP_INTERFACE_CLIENT;
 864                 os_memset(go_dev_addr, 0, ETH_ALEN);
 865         }
 866
 867         wpa_s->show_group_started = 0;
 868         if (client) {
 869                 /*
 870                  * Indicate event only after successfully completed 4-way
 871                  * handshake, i.e., when the interface is ready for data
 872                  * packets.
 873                  */
 874                 wpa_s->show_group_started = 1;
 875         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 876                 char psk[65];
 877                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 878                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 879                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 880                                MACSTR "%s",
 881                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 882                                MAC2STR(go_dev_addr),
 883                                persistent ? " [PERSISTENT]" : "");
 884                 wpas_p2p_cross_connect_setup(wpa_s);
 885                 wpas_p2p_set_group_idle_timeout(wpa_s);
 886         } else {
 887                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 888                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 889                                "go_dev_addr=" MACSTR "%s",
 890                                wpa_s->ifname, ssid_txt,
 891                                ssid ? ssid->frequency : 0,
 892                                ssid && ssid->passphrase ? ssid->passphrase : "",
 893                                MAC2STR(go_dev_addr),
 894                                persistent ? " [PERSISTENT]" : "");
 895                 wpas_p2p_cross_connect_setup(wpa_s);
 896                 wpas_p2p_set_group_idle_timeout(wpa_s);
 897         }
 898
 899         if (persistent)
 900                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 901                                                              ssid, go_dev_addr);
 902         else {
 903                 os_free(wpa_s->global->add_psk);
 904                 wpa_s->global->add_psk = NULL;
 905         }
 906         if (network_id < 0 && ssid)
 907                 network_id = ssid->id;
 908         if (!client) {
 909                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 910                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 911         }
 912 }
 913
 914
 915 struct send_action_work {
 916         unsigned int freq;
 917         u8 dst[ETH_ALEN];
 918         u8 src[ETH_ALEN];
 919         u8 bssid[ETH_ALEN];
 920         size_t len;
 921         unsigned int wait_time;
 922         u8 buf[0];
 923 };
 924
 925
 926 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 927                                               void *timeout_ctx)
 928 {
 929         struct wpa_supplicant *wpa_s = eloop_ctx;
 930
 931         if (!wpa_s->p2p_send_action_work)
 932                 return;
 933
 934         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 935         os_free(wpa_s->p2p_send_action_work->ctx);
 936         radio_work_done(wpa_s->p2p_send_action_work);
 937         wpa_s->p2p_send_action_work = NULL;
 938 }
 939
 940
 941 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 942                                            unsigned int freq,
 943                                            const u8 *dst, const u8 *src,
 944                                            const u8 *bssid,
 945                                            const u8 *data, size_t data_len,
 946                                            enum offchannel_send_action_result
 947                                            result)
 948 {
 949         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 950
 951         if (wpa_s->p2p_send_action_work) {
 952                 struct send_action_work *awork;
 953                 awork = wpa_s->p2p_send_action_work->ctx;
 954                 if (awork->wait_time == 0) {
 955                         os_free(awork);
 956                         radio_work_done(wpa_s->p2p_send_action_work);
 957                         wpa_s->p2p_send_action_work = NULL;
 958                 } else {
 959                         /*
 960                          * In theory, this should not be needed, but number of
 961                          * places in the P2P code is still using non-zero wait
 962                          * time for the last Action frame in the sequence and
 963                          * some of these do not call send_action_done().
 964                          */
 965                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 966                                              wpa_s, NULL);
 967                         eloop_register_timeout(
 968                                 0, awork->wait_time * 1000,
 969                                 wpas_p2p_send_action_work_timeout,
 970                                 wpa_s, NULL);
 971                 }
 972         }
 973
 974         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 975                 return;
 976
 977         switch (result) {
 978         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 979                 res = P2P_SEND_ACTION_SUCCESS;
 980                 break;
 981         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 982                 res = P2P_SEND_ACTION_NO_ACK;
 983                 break;
 984         case OFFCHANNEL_SEND_ACTION_FAILED:
 985                 res = P2P_SEND_ACTION_FAILED;
 986                 break;
 987         }
 988
 989         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 990
 991         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 992             wpa_s->pending_pd_before_join &&
 993             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 994              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 995             wpa_s->p2p_fallback_to_go_neg) {
 996                 wpa_s->pending_pd_before_join = 0;
 997                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 998                         "during p2p_connect-auto");
 999                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1000                 return;
1001         }
1002 }
1003
1004
1005 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1006 {
1007         struct wpa_supplicant *wpa_s = work->wpa_s;
1008         struct send_action_work *awork = work->ctx;
1009
1010         if (deinit) {
1011                 if (work->started) {
1012                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1013                                              wpa_s, NULL);
1014                         wpa_s->p2p_send_action_work = NULL;
1015                         offchannel_send_action_done(wpa_s);
1016                 }
1017                 os_free(awork);
1018                 return;
1019         }
1020
1021         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1022                                    awork->bssid, awork->buf, awork->len,
1023                                    awork->wait_time,
1024                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1025                 os_free(awork);
1026                 radio_work_done(work);
1027                 return;
1028         }
1029         wpa_s->p2p_send_action_work = work;
1030 }
1031
1032
1033 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1034                                  unsigned int freq, const u8 *dst,
1035                                  const u8 *src, const u8 *bssid, const u8 *buf,
1036                                  size_t len, unsigned int wait_time)
1037 {
1038         struct send_action_work *awork;
1039
1040         if (wpa_s->p2p_send_action_work) {
1041                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1042                 return -1;
1043         }
1044
1045         awork = os_zalloc(sizeof(*awork) + len);
1046         if (awork == NULL)
1047                 return -1;
1048
1049         awork->freq = freq;
1050         os_memcpy(awork->dst, dst, ETH_ALEN);
1051         os_memcpy(awork->src, src, ETH_ALEN);
1052         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1053         awork->len = len;
1054         awork->wait_time = wait_time;
1055         os_memcpy(awork->buf, buf, len);
1056
1057         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1058                            wpas_send_action_cb, awork) < 0) {
1059                 os_free(awork);
1060                 return -1;
1061         }
1062
1063         return 0;
1064 }
1065
1066
1067 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1068                             const u8 *src, const u8 *bssid, const u8 *buf,
1069                             size_t len, unsigned int wait_time)
1070 {
1071         struct wpa_supplicant *wpa_s = ctx;
1072         int listen_freq = -1, send_freq = -1;
1073
1074         if (wpa_s->p2p_listen_work)
1075                 listen_freq = wpa_s->p2p_listen_work->freq;
1076         if (wpa_s->p2p_send_action_work)
1077                 send_freq = wpa_s->p2p_send_action_work->freq;
1078         if (listen_freq != (int) freq && send_freq != (int) freq) {
1079                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1080                            listen_freq, send_freq);
1081                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1082                                              len, wait_time);
1083         }
1084
1085         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1086         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1087                                       wait_time,
1088                                       wpas_p2p_send_action_tx_status, 1);
1089 }
1090
1091
1092 static void wpas_send_action_done(void *ctx)
1093 {
1094         struct wpa_supplicant *wpa_s = ctx;
1095
1096         if (wpa_s->p2p_send_action_work) {
1097                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1098                                      wpa_s, NULL);
1099                 os_free(wpa_s->p2p_send_action_work->ctx);
1100                 radio_work_done(wpa_s->p2p_send_action_work);
1101                 wpa_s->p2p_send_action_work = NULL;
1102         }
1103
1104         offchannel_send_action_done(wpa_s);
1105 }
1106
1107
1108 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1109                                     struct p2p_go_neg_results *params)
1110 {
1111         if (wpa_s->go_params == NULL) {
1112                 wpa_s->go_params = os_malloc(sizeof(*params));
1113                 if (wpa_s->go_params == NULL)
1114                         return -1;
1115         }
1116         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1117         return 0;
1118 }
1119
1120
1121 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1122                                     struct p2p_go_neg_results *res)
1123 {
1124         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1125                    " dev_addr " MACSTR " wps_method %d",
1126                    MAC2STR(res->peer_interface_addr),
1127                    MAC2STR(res->peer_device_addr), res->wps_method);
1128         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1129                           res->ssid, res->ssid_len);
1130         wpa_supplicant_ap_deinit(wpa_s);
1131         wpas_copy_go_neg_results(wpa_s, res);
1132         if (res->wps_method == WPS_PBC) {
1133                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1134 #ifdef CONFIG_WPS_NFC
1135         } else if (res->wps_method == WPS_NFC) {
1136                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1137                                    res->peer_interface_addr,
1138                                    wpa_s->parent->p2p_oob_dev_pw,
1139                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1140                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1141                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1142                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1143                                    NULL,
1144                                    NULL, 0, 0);
1145 #endif /* CONFIG_WPS_NFC */
1146         } else {
1147                 u16 dev_pw_id = DEV_PW_DEFAULT;
1148                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1149                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1150                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1151                                    wpa_s->p2p_pin, 1, dev_pw_id);
1152         }
1153 }
1154
1155
1156 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1157                                   struct wpa_ssid *ssid)
1158 {
1159         struct wpa_ssid *persistent;
1160         struct psk_list_entry *psk;
1161         struct hostapd_data *hapd;
1162
1163         if (!wpa_s->ap_iface)
1164                 return;
1165
1166         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1167                                              ssid->ssid_len);
1168         if (persistent == NULL)
1169                 return;
1170
1171         hapd = wpa_s->ap_iface->bss[0];
1172
1173         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1174                          list) {
1175                 struct hostapd_wpa_psk *hpsk;
1176
1177                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1178                         MACSTR " psk=%d",
1179                         MAC2STR(psk->addr), psk->p2p);
1180                 hpsk = os_zalloc(sizeof(*hpsk));
1181                 if (hpsk == NULL)
1182                         break;
1183                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1184                 if (psk->p2p)
1185                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1186                 else
1187                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1188                 hpsk->next = hapd->conf->ssid.wpa_psk;
1189                 hapd->conf->ssid.wpa_psk = hpsk;
1190         }
1191 }
1192
1193
1194 static void p2p_go_configured(void *ctx, void *data)
1195 {
1196         struct wpa_supplicant *wpa_s = ctx;
1197         struct p2p_go_neg_results *params = data;
1198         struct wpa_ssid *ssid;
1199         int network_id = -1;
1200
1201         ssid = wpa_s->current_ssid;
1202         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1203                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1204                 if (wpa_s->global->p2p_group_formation == wpa_s)
1205                         wpa_s->global->p2p_group_formation = NULL;
1206                 if (os_strlen(params->passphrase) > 0) {
1207                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1208                                        P2P_EVENT_GROUP_STARTED
1209                                        "%s GO ssid=\"%s\" freq=%d "
1210                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1211                                        "%s", wpa_s->ifname,
1212                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1213                                        ssid->frequency, params->passphrase,
1214                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1215                                        params->persistent_group ?
1216                                        " [PERSISTENT]" : "");
1217                 } else {
1218                         char psk[65];
1219                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1220                                          sizeof(params->psk));
1221                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1222                                        P2P_EVENT_GROUP_STARTED
1223                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1224                                        "go_dev_addr=" MACSTR "%s",
1225                                        wpa_s->ifname,
1226                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1227                                        ssid->frequency, psk,
1228                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1229                                        params->persistent_group ?
1230                                        " [PERSISTENT]" : "");
1231                 }
1232
1233                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1234                 if (params->persistent_group) {
1235                         network_id = wpas_p2p_store_persistent_group(
1236                                 wpa_s->parent, ssid,
1237                                 wpa_s->global->p2p_dev_addr);
1238                         wpas_p2p_add_psk_list(wpa_s, ssid);
1239                 }
1240                 if (network_id < 0)
1241                         network_id = ssid->id;
1242                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1243                 wpas_p2p_cross_connect_setup(wpa_s);
1244                 wpas_p2p_set_group_idle_timeout(wpa_s);
1245
1246                 if (wpa_s->p2p_first_connection_timeout) {
1247                         wpa_dbg(wpa_s, MSG_DEBUG,
1248                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1249                                 wpa_s->p2p_first_connection_timeout);
1250                         wpa_s->p2p_go_group_formation_completed = 0;
1251                         wpa_s->global->p2p_group_formation = wpa_s;
1252                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1253                                              wpa_s->parent, NULL);
1254                         eloop_register_timeout(
1255                                 wpa_s->p2p_first_connection_timeout, 0,
1256                                 wpas_p2p_group_formation_timeout,
1257                                 wpa_s->parent, NULL);
1258                 }
1259
1260                 return;
1261         }
1262
1263         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1264         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1265                                               params->peer_interface_addr)) {
1266                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1267                            "filtering");
1268                 return;
1269         }
1270         if (params->wps_method == WPS_PBC) {
1271                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1272                                           params->peer_device_addr);
1273 #ifdef CONFIG_WPS_NFC
1274         } else if (params->wps_method == WPS_NFC) {
1275                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1276                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1277                     !wpa_s->parent->p2p_oob_dev_pw) {
1278                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1279                         return;
1280                 }
1281                 wpas_ap_wps_add_nfc_pw(
1282                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1283                         wpa_s->parent->p2p_oob_dev_pw,
1284                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1285                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1286 #endif /* CONFIG_WPS_NFC */
1287         } else if (wpa_s->p2p_pin[0])
1288                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1289                                           wpa_s->p2p_pin, NULL, 0, 0);
1290         os_free(wpa_s->go_params);
1291         wpa_s->go_params = NULL;
1292 }
1293
1294
1295 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1296                               struct p2p_go_neg_results *params,
1297                               int group_formation)
1298 {
1299         struct wpa_ssid *ssid;
1300
1301         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1302         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1303                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1304                         "results");
1305                 return;
1306         }
1307
1308         ssid = wpa_config_add_network(wpa_s->conf);
1309         if (ssid == NULL) {
1310                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1311                 return;
1312         }
1313
1314         wpa_s->show_group_started = 0;
1315
1316         wpa_config_set_network_defaults(ssid);
1317         ssid->temporary = 1;
1318         ssid->p2p_group = 1;
1319         ssid->p2p_persistent_group = params->persistent_group;
1320         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1321                 WPAS_MODE_P2P_GO;
1322         ssid->frequency = params->freq;
1323         ssid->ht40 = params->ht40;
1324         ssid->vht = params->vht;
1325         ssid->ssid = os_zalloc(params->ssid_len + 1);
1326         if (ssid->ssid) {
1327                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1328                 ssid->ssid_len = params->ssid_len;
1329         }
1330         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1331         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1332         ssid->proto = WPA_PROTO_RSN;
1333         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1334         if (os_strlen(params->passphrase) > 0) {
1335                 ssid->passphrase = os_strdup(params->passphrase);
1336                 if (ssid->passphrase == NULL) {
1337                         wpa_msg_global(wpa_s, MSG_ERROR,
1338                                        "P2P: Failed to copy passphrase for GO");
1339                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1340                         return;
1341                 }
1342         } else
1343                 ssid->passphrase = NULL;
1344         ssid->psk_set = params->psk_set;
1345         if (ssid->psk_set)
1346                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1347         else if (ssid->passphrase)
1348                 wpa_config_update_psk(ssid);
1349         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1350
1351         wpa_s->ap_configured_cb = p2p_go_configured;
1352         wpa_s->ap_configured_cb_ctx = wpa_s;
1353         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1354         wpa_s->scan_req = NORMAL_SCAN_REQ;
1355         wpa_s->connect_without_scan = ssid;
1356         wpa_s->reassociate = 1;
1357         wpa_s->disconnected = 0;
1358         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1359                 "start GO)");
1360         wpa_supplicant_req_scan(wpa_s, 0, 0);
1361 }
1362
1363
1364 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1365                                   const struct wpa_supplicant *src)
1366 {
1367         struct wpa_config *d;
1368         const struct wpa_config *s;
1369
1370         d = dst->conf;
1371         s = src->conf;
1372
1373 #define C(n) if (s->n) d->n = os_strdup(s->n)
1374         C(device_name);
1375         C(manufacturer);
1376         C(model_name);
1377         C(model_number);
1378         C(serial_number);
1379         C(config_methods);
1380 #undef C
1381
1382         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1383         os_memcpy(d->sec_device_type, s->sec_device_type,
1384                   sizeof(d->sec_device_type));
1385         d->num_sec_device_types = s->num_sec_device_types;
1386
1387         d->p2p_group_idle = s->p2p_group_idle;
1388         d->p2p_intra_bss = s->p2p_intra_bss;
1389         d->persistent_reconnect = s->persistent_reconnect;
1390         d->max_num_sta = s->max_num_sta;
1391         d->pbc_in_m1 = s->pbc_in_m1;
1392         d->ignore_old_scan_res = s->ignore_old_scan_res;
1393         d->beacon_int = s->beacon_int;
1394         d->dtim_period = s->dtim_period;
1395         d->disassoc_low_ack = s->disassoc_low_ack;
1396         d->disable_scan_offload = s->disable_scan_offload;
1397
1398         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1399                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1400                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1401         }
1402 }
1403
1404
1405 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1406                                       char *ifname, size_t len)
1407 {
1408         char *ifname_ptr = wpa_s->ifname;
1409
1410         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1411                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1412                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1413         }
1414
1415         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1416         if (os_strlen(ifname) >= IFNAMSIZ &&
1417             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1418                 /* Try to avoid going over the IFNAMSIZ length limit */
1419                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1420         }
1421 }
1422
1423
1424 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1425                                         enum wpa_driver_if_type type)
1426 {
1427         char ifname[120], force_ifname[120];
1428
1429         if (wpa_s->pending_interface_name[0]) {
1430                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1431                            "- skip creation of a new one");
1432                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1433                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1434                                    "unknown?! ifname='%s'",
1435                                    wpa_s->pending_interface_name);
1436                         return -1;
1437                 }
1438                 return 0;
1439         }
1440
1441         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1442         force_ifname[0] = '\0';
1443
1444         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1445                    ifname);
1446         wpa_s->p2p_group_idx++;
1447
1448         wpa_s->pending_interface_type = type;
1449         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1450                            wpa_s->pending_interface_addr, NULL) < 0) {
1451                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1452                            "interface");
1453                 return -1;
1454         }
1455
1456         if (force_ifname[0]) {
1457                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1458                            force_ifname);
1459                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1460                            sizeof(wpa_s->pending_interface_name));
1461         } else
1462                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1463                            sizeof(wpa_s->pending_interface_name));
1464         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1465                    MACSTR, wpa_s->pending_interface_name,
1466                    MAC2STR(wpa_s->pending_interface_addr));
1467
1468         return 0;
1469 }
1470
1471
1472 static void wpas_p2p_remove_pending_group_interface(
1473         struct wpa_supplicant *wpa_s)
1474 {
1475         if (!wpa_s->pending_interface_name[0] ||
1476             is_zero_ether_addr(wpa_s->pending_interface_addr))
1477                 return; /* No pending virtual interface */
1478
1479         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1480                    wpa_s->pending_interface_name);
1481         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1482                           wpa_s->pending_interface_name);
1483         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1484         wpa_s->pending_interface_name[0] = '\0';
1485 }
1486
1487
1488 static struct wpa_supplicant *
1489 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1490 {
1491         struct wpa_interface iface;
1492         struct wpa_supplicant *group_wpa_s;
1493
1494         if (!wpa_s->pending_interface_name[0]) {
1495                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1496                 if (!wpas_p2p_create_iface(wpa_s))
1497                         return NULL;
1498                 /*
1499                  * Something has forced us to remove the pending interface; try
1500                  * to create a new one and hope for the best that we will get
1501                  * the same local address.
1502                  */
1503                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1504                                                  WPA_IF_P2P_CLIENT) < 0)
1505                         return NULL;
1506         }
1507
1508         os_memset(&iface, 0, sizeof(iface));
1509         iface.ifname = wpa_s->pending_interface_name;
1510         iface.driver = wpa_s->driver->name;
1511         if (wpa_s->conf->ctrl_interface == NULL &&
1512             wpa_s->parent != wpa_s &&
1513             wpa_s->p2p_mgmt &&
1514             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1515                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1516         else
1517                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1518         iface.driver_param = wpa_s->conf->driver_param;
1519         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1520         if (group_wpa_s == NULL) {
1521                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1522                            "wpa_supplicant interface");
1523                 return NULL;
1524         }
1525         wpa_s->pending_interface_name[0] = '\0';
1526         group_wpa_s->parent = wpa_s;
1527         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1528                 P2P_GROUP_INTERFACE_CLIENT;
1529         wpa_s->global->p2p_group_formation = group_wpa_s;
1530
1531         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1532
1533         return group_wpa_s;
1534 }
1535
1536
1537 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1538                                              void *timeout_ctx)
1539 {
1540         struct wpa_supplicant *wpa_s = eloop_ctx;
1541         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1542         wpas_p2p_group_formation_failed(wpa_s);
1543 }
1544
1545
1546 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1547 {
1548         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1549                              wpa_s->parent, NULL);
1550         if (wpa_s->global->p2p)
1551                 p2p_group_formation_failed(wpa_s->global->p2p);
1552         wpas_group_formation_completed(wpa_s, 0);
1553 }
1554
1555
1556 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1557 {
1558         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1559         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1560                              wpa_s->parent, NULL);
1561         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1562                                wpa_s->parent, NULL);
1563         wpa_s->global->p2p_fail_on_wps_complete = 0;
1564 }
1565
1566
1567 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1568 {
1569         if (wpa_s->global->p2p_group_formation != wpa_s)
1570                 return;
1571         /* Speed up group formation timeout since this cannot succeed */
1572         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1573                              wpa_s->parent, NULL);
1574         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1575                                wpa_s->parent, NULL);
1576 }
1577
1578
1579 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1580 {
1581         struct wpa_supplicant *wpa_s = ctx;
1582
1583         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1584                 wpa_drv_cancel_remain_on_channel(wpa_s);
1585                 wpa_s->off_channel_freq = 0;
1586                 wpa_s->roc_waiting_drv_freq = 0;
1587         }
1588
1589         if (res->status) {
1590                 wpa_msg_global(wpa_s, MSG_INFO,
1591                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1592                                res->status);
1593                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1594                 wpas_p2p_remove_pending_group_interface(wpa_s);
1595                 return;
1596         }
1597
1598         if (wpa_s->p2p_go_ht40)
1599                 res->ht40 = 1;
1600         if (wpa_s->p2p_go_vht)
1601                 res->vht = 1;
1602
1603         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1604                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1605                        " wps_method=%s",
1606                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1607                        MAC2STR(res->peer_device_addr),
1608                        MAC2STR(res->peer_interface_addr),
1609                        p2p_wps_method_text(res->wps_method));
1610         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1611
1612         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1613                 struct wpa_ssid *ssid;
1614                 ssid = wpa_config_get_network(wpa_s->conf,
1615                                               wpa_s->p2p_persistent_id);
1616                 if (ssid && ssid->disabled == 2 &&
1617                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1618                         size_t len = os_strlen(ssid->passphrase);
1619                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1620                                    "on requested persistent group");
1621                         os_memcpy(res->passphrase, ssid->passphrase, len);
1622                         res->passphrase[len] = '\0';
1623                 }
1624         }
1625
1626         if (wpa_s->create_p2p_iface) {
1627                 struct wpa_supplicant *group_wpa_s =
1628                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1629                 if (group_wpa_s == NULL) {
1630                         wpas_p2p_remove_pending_group_interface(wpa_s);
1631                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1632                                              wpa_s, NULL);
1633                         wpas_p2p_group_formation_failed(wpa_s);
1634                         return;
1635                 }
1636                 if (group_wpa_s != wpa_s) {
1637                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1638                                   sizeof(group_wpa_s->p2p_pin));
1639                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1640                 }
1641                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1642                 wpa_s->pending_interface_name[0] = '\0';
1643                 group_wpa_s->p2p_in_provisioning = 1;
1644
1645                 if (res->role_go)
1646                         wpas_start_wps_go(group_wpa_s, res, 1);
1647                 else
1648                         wpas_start_wps_enrollee(group_wpa_s, res);
1649         } else {
1650                 wpa_s->p2p_in_provisioning = 1;
1651                 wpa_s->global->p2p_group_formation = wpa_s;
1652
1653                 if (res->role_go)
1654                         wpas_start_wps_go(wpa_s, res, 1);
1655                 else
1656                         wpas_start_wps_enrollee(ctx, res);
1657         }
1658
1659         wpa_s->p2p_long_listen = 0;
1660         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1661
1662         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1663         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1664                                (res->peer_config_timeout % 100) * 10000,
1665                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1666 }
1667
1668
1669 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1670 {
1671         struct wpa_supplicant *wpa_s = ctx;
1672         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1673                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1674
1675         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1676 }
1677
1678
1679 static void wpas_dev_found(void *ctx, const u8 *addr,
1680                            const struct p2p_peer_info *info,
1681                            int new_device)
1682 {
1683 #ifndef CONFIG_NO_STDOUT_DEBUG
1684         struct wpa_supplicant *wpa_s = ctx;
1685         char devtype[WPS_DEV_TYPE_BUFSIZE];
1686         char *wfd_dev_info_hex = NULL;
1687
1688 #ifdef CONFIG_WIFI_DISPLAY
1689         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1690                                                     WFD_SUBELEM_DEVICE_INFO);
1691 #endif /* CONFIG_WIFI_DISPLAY */
1692
1693         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1694                        " p2p_dev_addr=" MACSTR
1695                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1696                        "dev_capab=0x%x group_capab=0x%x%s%s",
1697                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1698                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1699                                             sizeof(devtype)),
1700                        info->device_name, info->config_methods,
1701                        info->dev_capab, info->group_capab,
1702                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1703                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1704
1705         os_free(wfd_dev_info_hex);
1706 #endif /* CONFIG_NO_STDOUT_DEBUG */
1707
1708         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1709 }
1710
1711
1712 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1713 {
1714         struct wpa_supplicant *wpa_s = ctx;
1715
1716         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1717                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1718
1719         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1720 }
1721
1722
1723 static void wpas_find_stopped(void *ctx)
1724 {
1725         struct wpa_supplicant *wpa_s = ctx;
1726         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1727 }
1728
1729
1730 struct wpas_p2p_listen_work {
1731         unsigned int freq;
1732         unsigned int duration;
1733         struct wpabuf *probe_resp_ie;
1734 };
1735
1736
1737 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1738 {
1739         if (lwork == NULL)
1740                 return;
1741         wpabuf_free(lwork->probe_resp_ie);
1742         os_free(lwork);
1743 }
1744
1745
1746 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1747 {
1748         struct wpas_p2p_listen_work *lwork;
1749
1750         if (!wpa_s->p2p_listen_work)
1751                 return;
1752
1753         lwork = wpa_s->p2p_listen_work->ctx;
1754         wpas_p2p_listen_work_free(lwork);
1755         radio_work_done(wpa_s->p2p_listen_work);
1756         wpa_s->p2p_listen_work = NULL;
1757 }
1758
1759
1760 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1761 {
1762         struct wpa_supplicant *wpa_s = work->wpa_s;
1763         struct wpas_p2p_listen_work *lwork = work->ctx;
1764
1765         if (deinit) {
1766                 if (work->started) {
1767                         wpa_s->p2p_listen_work = NULL;
1768                         wpas_stop_listen(wpa_s);
1769                 }
1770                 wpas_p2p_listen_work_free(lwork);
1771                 return;
1772         }
1773
1774         wpa_s->p2p_listen_work = work;
1775
1776         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1777
1778         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1779                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1780                            "report received Probe Request frames");
1781                 wpas_p2p_listen_work_done(wpa_s);
1782                 return;
1783         }
1784
1785         wpa_s->pending_listen_freq = lwork->freq;
1786         wpa_s->pending_listen_duration = lwork->duration;
1787
1788         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1789         {
1790                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1791                            "to remain on channel (%u MHz) for Listen "
1792                            "state", lwork->freq);
1793                 wpas_p2p_listen_work_done(wpa_s);
1794                 wpa_s->pending_listen_freq = 0;
1795                 return;
1796         }
1797         wpa_s->off_channel_freq = 0;
1798         wpa_s->roc_waiting_drv_freq = lwork->freq;
1799 }
1800
1801
1802 static int wpas_start_listen(void *ctx, unsigned int freq,
1803                              unsigned int duration,
1804                              const struct wpabuf *probe_resp_ie)
1805 {
1806         struct wpa_supplicant *wpa_s = ctx;
1807         struct wpas_p2p_listen_work *lwork;
1808
1809         if (wpa_s->p2p_listen_work) {
1810                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1811                 return -1;
1812         }
1813
1814         lwork = os_zalloc(sizeof(*lwork));
1815         if (lwork == NULL)
1816                 return -1;
1817         lwork->freq = freq;
1818         lwork->duration = duration;
1819         if (probe_resp_ie) {
1820                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1821                 if (lwork->probe_resp_ie == NULL) {
1822                         wpas_p2p_listen_work_free(lwork);
1823                         return -1;
1824                 }
1825         }
1826
1827         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1828                            lwork) < 0) {
1829                 wpas_p2p_listen_work_free(lwork);
1830                 return -1;
1831         }
1832
1833         return 0;
1834 }
1835
1836
1837 static void wpas_stop_listen(void *ctx)
1838 {
1839         struct wpa_supplicant *wpa_s = ctx;
1840         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1841                 wpa_drv_cancel_remain_on_channel(wpa_s);
1842                 wpa_s->off_channel_freq = 0;
1843                 wpa_s->roc_waiting_drv_freq = 0;
1844         }
1845         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1846         wpa_drv_probe_req_report(wpa_s, 0);
1847         wpas_p2p_listen_work_done(wpa_s);
1848 }
1849
1850
1851 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1852 {
1853         struct wpa_supplicant *wpa_s = ctx;
1854         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1855 }
1856
1857
1858 /*
1859  * DNS Header section is used only to calculate compression pointers, so the
1860  * contents of this data does not matter, but the length needs to be reserved
1861  * in the virtual packet.
1862  */
1863 #define DNS_HEADER_LEN 12
1864
1865 /*
1866  * 27-octet in-memory packet from P2P specification containing two implied
1867  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1868  */
1869 #define P2P_SD_IN_MEMORY_LEN 27
1870
1871 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1872                                        u8 **spos, const u8 *end)
1873 {
1874         while (*spos < end) {
1875                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1876                 int len;
1877
1878                 if (val == 1 || val == 2) {
1879                         /* These are reserved values in RFC 1035 */
1880                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1881                                    "sequence starting with 0x%x", val);
1882                         return -1;
1883                 }
1884
1885                 if (val == 3) {
1886                         u16 offset;
1887                         u8 *spos_tmp;
1888
1889                         /* Offset */
1890                         if (*spos + 2 > end) {
1891                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1892                                            "DNS offset field");
1893                                 return -1;
1894                         }
1895
1896                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1897                         if (offset >= *spos - start) {
1898                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1899                                            "pointer offset %u", offset);
1900                                 return -1;
1901                         }
1902
1903                         (*spos) += 2;
1904                         spos_tmp = start + offset;
1905                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1906                                                            &spos_tmp,
1907                                                            *spos - 2);
1908                 }
1909
1910                 /* Label */
1911                 len = (*spos)[0] & 0x3f;
1912                 if (len == 0)
1913                         return 0;
1914
1915                 (*spos)++;
1916                 if (*spos + len > end) {
1917                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1918                                    "sequence - no room for label with length "
1919                                    "%u", len);
1920                         return -1;
1921                 }
1922
1923                 if (*upos + len + 2 > uend)
1924                         return -2;
1925
1926                 os_memcpy(*upos, *spos, len);
1927                 *spos += len;
1928                 *upos += len;
1929                 (*upos)[0] = '.';
1930                 (*upos)++;
1931                 (*upos)[0] = '\0';
1932         }
1933
1934         return 0;
1935 }
1936
1937
1938 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1939  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1940  * not large enough */
1941 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1942                                  size_t msg_len, size_t offset)
1943 {
1944         /* 27-octet in-memory packet from P2P specification */
1945         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1946                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1947         u8 *tmp, *end, *spos;
1948         char *upos, *uend;
1949         int ret = 0;
1950
1951         if (buf_len < 2)
1952                 return -1;
1953         if (offset > msg_len)
1954                 return -1;
1955
1956         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1957         if (tmp == NULL)
1958                 return -1;
1959         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1960         end = spos + msg_len;
1961         spos += offset;
1962
1963         os_memset(tmp, 0, DNS_HEADER_LEN);
1964         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1965         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1966
1967         upos = buf;
1968         uend = buf + buf_len;
1969
1970         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1971         if (ret) {
1972                 os_free(tmp);
1973                 return ret;
1974         }
1975
1976         if (upos == buf) {
1977                 upos[0] = '.';
1978                 upos[1] = '\0';
1979         } else if (upos[-1] == '.')
1980                 upos[-1] = '\0';
1981
1982         os_free(tmp);
1983         return 0;
1984 }
1985
1986
1987 static struct p2p_srv_bonjour *
1988 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1989                              const struct wpabuf *query)
1990 {
1991         struct p2p_srv_bonjour *bsrv;
1992         size_t len;
1993
1994         len = wpabuf_len(query);
1995         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1996                          struct p2p_srv_bonjour, list) {
1997                 if (len == wpabuf_len(bsrv->query) &&
1998                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1999                               len) == 0)
2000                         return bsrv;
2001         }
2002         return NULL;
2003 }
2004
2005
2006 static struct p2p_srv_upnp *
2007 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2008                           const char *service)
2009 {
2010         struct p2p_srv_upnp *usrv;
2011
2012         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2013                          struct p2p_srv_upnp, list) {
2014                 if (version == usrv->version &&
2015                     os_strcmp(service, usrv->service) == 0)
2016                         return usrv;
2017         }
2018         return NULL;
2019 }
2020
2021
2022 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2023                                         u8 srv_trans_id)
2024 {
2025         u8 *len_pos;
2026
2027         if (wpabuf_tailroom(resp) < 5)
2028                 return;
2029
2030         /* Length (to be filled) */
2031         len_pos = wpabuf_put(resp, 2);
2032         wpabuf_put_u8(resp, srv_proto);
2033         wpabuf_put_u8(resp, srv_trans_id);
2034         /* Status Code */
2035         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2036         /* Response Data: empty */
2037         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2038 }
2039
2040
2041 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2042                                 struct wpabuf *resp, u8 srv_trans_id)
2043 {
2044         struct p2p_srv_bonjour *bsrv;
2045         u8 *len_pos;
2046
2047         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2048
2049         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2050                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2051                 return;
2052         }
2053
2054         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2055                          struct p2p_srv_bonjour, list) {
2056                 if (wpabuf_tailroom(resp) <
2057                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2058                         return;
2059                 /* Length (to be filled) */
2060                 len_pos = wpabuf_put(resp, 2);
2061                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2062                 wpabuf_put_u8(resp, srv_trans_id);
2063                 /* Status Code */
2064                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2065                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2066                                   wpabuf_head(bsrv->resp),
2067                                   wpabuf_len(bsrv->resp));
2068                 /* Response Data */
2069                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2070                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2071                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2072                              2);
2073         }
2074 }
2075
2076
2077 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2078                                size_t query_len)
2079 {
2080         char str_rx[256], str_srv[256];
2081
2082         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2083                 return 0; /* Too short to include DNS Type and Version */
2084         if (os_memcmp(query + query_len - 3,
2085                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2086                       3) != 0)
2087                 return 0; /* Mismatch in DNS Type or Version */
2088         if (query_len == wpabuf_len(bsrv->query) &&
2089             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2090                 return 1; /* Binary match */
2091
2092         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2093                                   0))
2094                 return 0; /* Failed to uncompress query */
2095         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2096                                   wpabuf_head(bsrv->query),
2097                                   wpabuf_len(bsrv->query) - 3, 0))
2098                 return 0; /* Failed to uncompress service */
2099
2100         return os_strcmp(str_rx, str_srv) == 0;
2101 }
2102
2103
2104 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2105                                 struct wpabuf *resp, u8 srv_trans_id,
2106                                 const u8 *query, size_t query_len)
2107 {
2108         struct p2p_srv_bonjour *bsrv;
2109         u8 *len_pos;
2110         int matches = 0;
2111
2112         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2113                           query, query_len);
2114         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2115                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2116                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2117                                             srv_trans_id);
2118                 return;
2119         }
2120
2121         if (query_len == 0) {
2122                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2123                 return;
2124         }
2125
2126         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2127                          struct p2p_srv_bonjour, list) {
2128                 if (!match_bonjour_query(bsrv, query, query_len))
2129                         continue;
2130
2131                 if (wpabuf_tailroom(resp) <
2132                     5 + query_len + wpabuf_len(bsrv->resp))
2133                         return;
2134
2135                 matches++;
2136
2137                 /* Length (to be filled) */
2138                 len_pos = wpabuf_put(resp, 2);
2139                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2140                 wpabuf_put_u8(resp, srv_trans_id);
2141
2142                 /* Status Code */
2143                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2144                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2145                                   wpabuf_head(bsrv->resp),
2146                                   wpabuf_len(bsrv->resp));
2147
2148                 /* Response Data */
2149                 wpabuf_put_data(resp, query, query_len); /* Key */
2150                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2151
2152                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2153         }
2154
2155         if (matches == 0) {
2156                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2157                            "available");
2158                 if (wpabuf_tailroom(resp) < 5)
2159                         return;
2160
2161                 /* Length (to be filled) */
2162                 len_pos = wpabuf_put(resp, 2);
2163                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2164                 wpabuf_put_u8(resp, srv_trans_id);
2165
2166                 /* Status Code */
2167                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2168                 /* Response Data: empty */
2169                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2170                              2);
2171         }
2172 }
2173
2174
2175 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2176                              struct wpabuf *resp, u8 srv_trans_id)
2177 {
2178         struct p2p_srv_upnp *usrv;
2179         u8 *len_pos;
2180
2181         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2182
2183         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2184                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2185                 return;
2186         }
2187
2188         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2189                          struct p2p_srv_upnp, list) {
2190                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2191                         return;
2192
2193                 /* Length (to be filled) */
2194                 len_pos = wpabuf_put(resp, 2);
2195                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2196                 wpabuf_put_u8(resp, srv_trans_id);
2197
2198                 /* Status Code */
2199                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2200                 /* Response Data */
2201                 wpabuf_put_u8(resp, usrv->version);
2202                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2203                            usrv->service);
2204                 wpabuf_put_str(resp, usrv->service);
2205                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2206                              2);
2207         }
2208 }
2209
2210
2211 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2212                              struct wpabuf *resp, u8 srv_trans_id,
2213                              const u8 *query, size_t query_len)
2214 {
2215         struct p2p_srv_upnp *usrv;
2216         u8 *len_pos;
2217         u8 version;
2218         char *str;
2219         int count = 0;
2220
2221         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2222                           query, query_len);
2223
2224         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2225                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2226                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2227                                             srv_trans_id);
2228                 return;
2229         }
2230
2231         if (query_len == 0) {
2232                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2233                 return;
2234         }
2235
2236         if (wpabuf_tailroom(resp) < 5)
2237                 return;
2238
2239         /* Length (to be filled) */
2240         len_pos = wpabuf_put(resp, 2);
2241         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2242         wpabuf_put_u8(resp, srv_trans_id);
2243
2244         version = query[0];
2245         str = os_malloc(query_len);
2246         if (str == NULL)
2247                 return;
2248         os_memcpy(str, query + 1, query_len - 1);
2249         str[query_len - 1] = '\0';
2250
2251         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2252                          struct p2p_srv_upnp, list) {
2253                 if (version != usrv->version)
2254                         continue;
2255
2256                 if (os_strcmp(str, "ssdp:all") != 0 &&
2257                     os_strstr(usrv->service, str) == NULL)
2258                         continue;
2259
2260                 if (wpabuf_tailroom(resp) < 2)
2261                         break;
2262                 if (count == 0) {
2263                         /* Status Code */
2264                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2265                         /* Response Data */
2266                         wpabuf_put_u8(resp, version);
2267                 } else
2268                         wpabuf_put_u8(resp, ',');
2269
2270                 count++;
2271
2272                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2273                            usrv->service);
2274                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2275                         break;
2276                 wpabuf_put_str(resp, usrv->service);
2277         }
2278         os_free(str);
2279
2280         if (count == 0) {
2281                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2282                            "available");
2283                 /* Status Code */
2284                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2285                 /* Response Data: empty */
2286         }
2287
2288         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2289 }
2290
2291
2292 #ifdef CONFIG_WIFI_DISPLAY
2293 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2294                             struct wpabuf *resp, u8 srv_trans_id,
2295                             const u8 *query, size_t query_len)
2296 {
2297         const u8 *pos;
2298         u8 role;
2299         u8 *len_pos;
2300
2301         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2302
2303         if (!wpa_s->global->wifi_display) {
2304                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2305                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2306                                             srv_trans_id);
2307                 return;
2308         }
2309
2310         if (query_len < 1) {
2311                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2312                            "Role");
2313                 return;
2314         }
2315
2316         if (wpabuf_tailroom(resp) < 5)
2317                 return;
2318
2319         pos = query;
2320         role = *pos++;
2321         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2322
2323         /* TODO: role specific handling */
2324
2325         /* Length (to be filled) */
2326         len_pos = wpabuf_put(resp, 2);
2327         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2328         wpabuf_put_u8(resp, srv_trans_id);
2329         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2330
2331         while (pos < query + query_len) {
2332                 if (*pos < MAX_WFD_SUBELEMS &&
2333                     wpa_s->global->wfd_subelem[*pos] &&
2334                     wpabuf_tailroom(resp) >=
2335                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2336                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2337                                    "subelement %u", *pos);
2338                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2339                 }
2340                 pos++;
2341         }
2342
2343         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2344 }
2345 #endif /* CONFIG_WIFI_DISPLAY */
2346
2347
2348 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2349                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2350 {
2351         struct wpa_supplicant *wpa_s = ctx;
2352         const u8 *pos = tlvs;
2353         const u8 *end = tlvs + tlvs_len;
2354         const u8 *tlv_end;
2355         u16 slen;
2356         struct wpabuf *resp;
2357         u8 srv_proto, srv_trans_id;
2358         size_t buf_len;
2359         char *buf;
2360
2361         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2362                     tlvs, tlvs_len);
2363         buf_len = 2 * tlvs_len + 1;
2364         buf = os_malloc(buf_len);
2365         if (buf) {
2366                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2367                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2368                              MACSTR " %u %u %s",
2369                              freq, MAC2STR(sa), dialog_token, update_indic,
2370                              buf);
2371                 os_free(buf);
2372         }
2373
2374         if (wpa_s->p2p_sd_over_ctrl_iface) {
2375                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2376                                            update_indic, tlvs, tlvs_len);
2377                 return; /* to be processed by an external program */
2378         }
2379
2380         resp = wpabuf_alloc(10000);
2381         if (resp == NULL)
2382                 return;
2383
2384         while (pos + 1 < end) {
2385                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2386                 slen = WPA_GET_LE16(pos);
2387                 pos += 2;
2388                 if (pos + slen > end || slen < 2) {
2389                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2390                                    "length");
2391                         wpabuf_free(resp);
2392                         return;
2393                 }
2394                 tlv_end = pos + slen;
2395
2396                 srv_proto = *pos++;
2397                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2398                            srv_proto);
2399                 srv_trans_id = *pos++;
2400                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2401                            srv_trans_id);
2402
2403                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2404                             pos, tlv_end - pos);
2405
2406
2407                 if (wpa_s->force_long_sd) {
2408                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2409                                    "response");
2410                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2411                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2412                         goto done;
2413                 }
2414
2415                 switch (srv_proto) {
2416                 case P2P_SERV_ALL_SERVICES:
2417                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2418                                    "for all services");
2419                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2420                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2421                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2422                                            "discovery protocols available");
2423                                 wpas_sd_add_proto_not_avail(
2424                                         resp, P2P_SERV_ALL_SERVICES,
2425                                         srv_trans_id);
2426                                 break;
2427                         }
2428                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2429                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2430                         break;
2431                 case P2P_SERV_BONJOUR:
2432                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2433                                             pos, tlv_end - pos);
2434                         break;
2435                 case P2P_SERV_UPNP:
2436                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2437                                          pos, tlv_end - pos);
2438                         break;
2439 #ifdef CONFIG_WIFI_DISPLAY
2440                 case P2P_SERV_WIFI_DISPLAY:
2441                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2442                                         pos, tlv_end - pos);
2443                         break;
2444 #endif /* CONFIG_WIFI_DISPLAY */
2445                 default:
2446                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2447                                    "protocol %u", srv_proto);
2448                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2449                                                     srv_trans_id);
2450                         break;
2451                 }
2452
2453                 pos = tlv_end;
2454         }
2455
2456 done:
2457         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2458                                    update_indic, tlvs, tlvs_len);
2459
2460         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2461
2462         wpabuf_free(resp);
2463 }
2464
2465
2466 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2467                              const u8 *tlvs, size_t tlvs_len)
2468 {
2469         struct wpa_supplicant *wpa_s = ctx;
2470         const u8 *pos = tlvs;
2471         const u8 *end = tlvs + tlvs_len;
2472         const u8 *tlv_end;
2473         u16 slen;
2474         size_t buf_len;
2475         char *buf;
2476
2477         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2478                     tlvs, tlvs_len);
2479         if (tlvs_len > 1500) {
2480                 /* TODO: better way for handling this */
2481                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2482                              P2P_EVENT_SERV_DISC_RESP MACSTR
2483                              " %u <long response: %u bytes>",
2484                              MAC2STR(sa), update_indic,
2485                              (unsigned int) tlvs_len);
2486         } else {
2487                 buf_len = 2 * tlvs_len + 1;
2488                 buf = os_malloc(buf_len);
2489                 if (buf) {
2490                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2491                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2492                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2493                                      MAC2STR(sa), update_indic, buf);
2494                         os_free(buf);
2495                 }
2496         }
2497
2498         while (pos < end) {
2499                 u8 srv_proto, srv_trans_id, status;
2500
2501                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2502                 slen = WPA_GET_LE16(pos);
2503                 pos += 2;
2504                 if (pos + slen > end || slen < 3) {
2505                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2506                                    "length");
2507                         return;
2508                 }
2509                 tlv_end = pos + slen;
2510
2511                 srv_proto = *pos++;
2512                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2513                            srv_proto);
2514                 srv_trans_id = *pos++;
2515                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2516                            srv_trans_id);
2517                 status = *pos++;
2518                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2519                            status);
2520
2521                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2522                             pos, tlv_end - pos);
2523
2524                 pos = tlv_end;
2525         }
2526
2527         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2528 }
2529
2530
2531 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2532                         const struct wpabuf *tlvs)
2533 {
2534         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2535                 return 0;
2536         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2537 }
2538
2539
2540 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2541                              u8 version, const char *query)
2542 {
2543         struct wpabuf *tlvs;
2544         u64 ret;
2545
2546         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2547         if (tlvs == NULL)
2548                 return 0;
2549         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2550         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2551         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2552         wpabuf_put_u8(tlvs, version);
2553         wpabuf_put_str(tlvs, query);
2554         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2555         wpabuf_free(tlvs);
2556         return ret;
2557 }
2558
2559
2560 #ifdef CONFIG_WIFI_DISPLAY
2561
2562 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2563                                    const struct wpabuf *tlvs)
2564 {
2565         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2566                 return 0;
2567         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2568 }
2569
2570
2571 #define MAX_WFD_SD_SUBELEMS 20
2572
2573 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2574                                 const char *subelems)
2575 {
2576         u8 *len;
2577         const char *pos;
2578         int val;
2579         int count = 0;
2580
2581         len = wpabuf_put(tlvs, 2);
2582         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2583         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2584
2585         wpabuf_put_u8(tlvs, role);
2586
2587         pos = subelems;
2588         while (*pos) {
2589                 val = atoi(pos);
2590                 if (val >= 0 && val < 256) {
2591                         wpabuf_put_u8(tlvs, val);
2592                         count++;
2593                         if (count == MAX_WFD_SD_SUBELEMS)
2594                                 break;
2595                 }
2596                 pos = os_strchr(pos + 1, ',');
2597                 if (pos == NULL)
2598                         break;
2599                 pos++;
2600         }
2601
2602         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2603 }
2604
2605
2606 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2607                                      const u8 *dst, const char *role)
2608 {
2609         struct wpabuf *tlvs;
2610         u64 ret;
2611         const char *subelems;
2612         u8 id = 1;
2613
2614         subelems = os_strchr(role, ' ');
2615         if (subelems == NULL)
2616                 return 0;
2617         subelems++;
2618
2619         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2620         if (tlvs == NULL)
2621                 return 0;
2622
2623         if (os_strstr(role, "[source]"))
2624                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2625         if (os_strstr(role, "[pri-sink]"))
2626                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2627         if (os_strstr(role, "[sec-sink]"))
2628                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2629         if (os_strstr(role, "[source+sink]"))
2630                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2631
2632         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2633         wpabuf_free(tlvs);
2634         return ret;
2635 }
2636
2637 #endif /* CONFIG_WIFI_DISPLAY */
2638
2639
2640 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2641 {
2642         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2643                 return -1;
2644         return p2p_sd_cancel_request(wpa_s->global->p2p,
2645                                      (void *) (uintptr_t) req);
2646 }
2647
2648
2649 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2650                           const u8 *dst, u8 dialog_token,
2651                           const struct wpabuf *resp_tlvs)
2652 {
2653         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2654                 return;
2655         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2656                         resp_tlvs);
2657 }
2658
2659
2660 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2661 {
2662         if (wpa_s->global->p2p)
2663                 p2p_sd_service_update(wpa_s->global->p2p);
2664 }
2665
2666
2667 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2668 {
2669         dl_list_del(&bsrv->list);
2670         wpabuf_free(bsrv->query);
2671         wpabuf_free(bsrv->resp);
2672         os_free(bsrv);
2673 }
2674
2675
2676 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2677 {
2678         dl_list_del(&usrv->list);
2679         os_free(usrv->service);
2680         os_free(usrv);
2681 }
2682
2683
2684 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2685 {
2686         struct p2p_srv_bonjour *bsrv, *bn;
2687         struct p2p_srv_upnp *usrv, *un;
2688
2689         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2690                               struct p2p_srv_bonjour, list)
2691                 wpas_p2p_srv_bonjour_free(bsrv);
2692
2693         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2694                               struct p2p_srv_upnp, list)
2695                 wpas_p2p_srv_upnp_free(usrv);
2696
2697         wpas_p2p_sd_service_update(wpa_s);
2698 }
2699
2700
2701 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2702                                  struct wpabuf *query, struct wpabuf *resp)
2703 {
2704         struct p2p_srv_bonjour *bsrv;
2705
2706         bsrv = os_zalloc(sizeof(*bsrv));
2707         if (bsrv == NULL)
2708                 return -1;
2709         bsrv->query = query;
2710         bsrv->resp = resp;
2711         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2712
2713         wpas_p2p_sd_service_update(wpa_s);
2714         return 0;
2715 }
2716
2717
2718 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2719                                  const struct wpabuf *query)
2720 {
2721         struct p2p_srv_bonjour *bsrv;
2722
2723         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2724         if (bsrv == NULL)
2725                 return -1;
2726         wpas_p2p_srv_bonjour_free(bsrv);
2727         wpas_p2p_sd_service_update(wpa_s);
2728         return 0;
2729 }
2730
2731
2732 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2733                               const char *service)
2734 {
2735         struct p2p_srv_upnp *usrv;
2736
2737         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2738                 return 0; /* Already listed */
2739         usrv = os_zalloc(sizeof(*usrv));
2740         if (usrv == NULL)
2741                 return -1;
2742         usrv->version = version;
2743         usrv->service = os_strdup(service);
2744         if (usrv->service == NULL) {
2745                 os_free(usrv);
2746                 return -1;
2747         }
2748         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2749
2750         wpas_p2p_sd_service_update(wpa_s);
2751         return 0;
2752 }
2753
2754
2755 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2756                               const char *service)
2757 {
2758         struct p2p_srv_upnp *usrv;
2759
2760         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2761         if (usrv == NULL)
2762                 return -1;
2763         wpas_p2p_srv_upnp_free(usrv);
2764         wpas_p2p_sd_service_update(wpa_s);
2765         return 0;
2766 }
2767
2768
2769 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2770                                          const u8 *peer, const char *params,
2771                                          unsigned int generated_pin)
2772 {
2773         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2774                        " %08d%s", MAC2STR(peer), generated_pin, params);
2775 }
2776
2777
2778 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2779                                         const u8 *peer, const char *params)
2780 {
2781         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2782                        "%s", MAC2STR(peer), params);
2783 }
2784
2785
2786 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2787                                const u8 *dev_addr, const u8 *pri_dev_type,
2788                                const char *dev_name, u16 supp_config_methods,
2789                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2790                                size_t group_id_len)
2791 {
2792         struct wpa_supplicant *wpa_s = ctx;
2793         char devtype[WPS_DEV_TYPE_BUFSIZE];
2794         char params[300];
2795         u8 empty_dev_type[8];
2796         unsigned int generated_pin = 0;
2797         struct wpa_supplicant *group = NULL;
2798
2799         if (group_id) {
2800                 for (group = wpa_s->global->ifaces; group; group = group->next)
2801                 {
2802                         struct wpa_ssid *s = group->current_ssid;
2803                         if (s != NULL &&
2804                             s->mode == WPAS_MODE_P2P_GO &&
2805                             group_id_len - ETH_ALEN == s->ssid_len &&
2806                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2807                                       s->ssid_len) == 0)
2808                                 break;
2809                 }
2810         }
2811
2812         if (pri_dev_type == NULL) {
2813                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2814                 pri_dev_type = empty_dev_type;
2815         }
2816         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2817                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2818                     "dev_capab=0x%x group_capab=0x%x%s%s",
2819                     MAC2STR(dev_addr),
2820                     wps_dev_type_bin2str(pri_dev_type, devtype,
2821                                          sizeof(devtype)),
2822                     dev_name, supp_config_methods, dev_capab, group_capab,
2823                     group ? " group=" : "",
2824                     group ? group->ifname : "");
2825         params[sizeof(params) - 1] = '\0';
2826
2827         if (config_methods & WPS_CONFIG_DISPLAY) {
2828                 generated_pin = wps_generate_pin();
2829                 wpas_prov_disc_local_display(wpa_s, peer, params,
2830                                              generated_pin);
2831         } else if (config_methods & WPS_CONFIG_KEYPAD)
2832                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2833         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2834                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2835                                MACSTR "%s", MAC2STR(peer), params);
2836
2837         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2838                                             P2P_PROV_DISC_SUCCESS,
2839                                             config_methods, generated_pin);
2840 }
2841
2842
2843 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2844 {
2845         struct wpa_supplicant *wpa_s = ctx;
2846         unsigned int generated_pin = 0;
2847         char params[20];
2848
2849         if (wpa_s->pending_pd_before_join &&
2850             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2851              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2852                 wpa_s->pending_pd_before_join = 0;
2853                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2854                            "join-existing-group operation");
2855                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2856                 return;
2857         }
2858
2859         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2860             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2861                 os_snprintf(params, sizeof(params), " peer_go=%d",
2862                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2863         else
2864                 params[0] = '\0';
2865
2866         if (config_methods & WPS_CONFIG_DISPLAY)
2867                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2868         else if (config_methods & WPS_CONFIG_KEYPAD) {
2869                 generated_pin = wps_generate_pin();
2870                 wpas_prov_disc_local_display(wpa_s, peer, params,
2871                                              generated_pin);
2872         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2873                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2874                                MACSTR "%s", MAC2STR(peer), params);
2875
2876         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2877                                             P2P_PROV_DISC_SUCCESS,
2878                                             config_methods, generated_pin);
2879 }
2880
2881
2882 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2883                                 enum p2p_prov_disc_status status)
2884 {
2885         struct wpa_supplicant *wpa_s = ctx;
2886
2887         if (wpa_s->p2p_fallback_to_go_neg) {
2888                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2889                         "failed - fall back to GO Negotiation");
2890                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2891                 return;
2892         }
2893
2894         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2895                 wpa_s->pending_pd_before_join = 0;
2896                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2897                            "join-existing-group operation (no ACK for PD "
2898                            "Req attempts)");
2899                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2900                 return;
2901         }
2902
2903         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2904                        " p2p_dev_addr=" MACSTR " status=%d",
2905                        MAC2STR(peer), status);
2906
2907         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2908                                             status, 0, 0);
2909 }
2910
2911
2912 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2913 {
2914         if (channels == NULL)
2915                 return 1; /* Assume no restrictions */
2916         return p2p_channels_includes_freq(channels, freq);
2917
2918 }
2919
2920
2921 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2922                                   const u8 *go_dev_addr, const u8 *ssid,
2923                                   size_t ssid_len, int *go, u8 *group_bssid,
2924                                   int *force_freq, int persistent_group,
2925                                   const struct p2p_channels *channels,
2926                                   int dev_pw_id)
2927 {
2928         struct wpa_supplicant *wpa_s = ctx;
2929         struct wpa_ssid *s;
2930         int res;
2931         struct wpa_supplicant *grp;
2932
2933         if (!persistent_group) {
2934                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2935                            " to join an active group (SSID: %s)",
2936                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2937                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2938                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2939                      == 0 ||
2940                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2941                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2942                                    "authorized invitation");
2943                         goto accept_inv;
2944                 }
2945
2946 #ifdef CONFIG_WPS_NFC
2947                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
2948                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
2949                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2950                         wpa_s->parent->p2p_wps_method = WPS_NFC;
2951                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
2952                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
2953                                   go_dev_addr, ETH_ALEN);
2954                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
2955                                   bssid, ETH_ALEN);
2956                         goto accept_inv;
2957                 }
2958 #endif /* CONFIG_WPS_NFC */
2959
2960                 /*
2961                  * Do not accept the invitation automatically; notify user and
2962                  * request approval.
2963                  */
2964                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2965         }
2966
2967         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2968         if (grp) {
2969                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2970                            "running persistent group");
2971                 if (*go)
2972                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2973                 goto accept_inv;
2974         }
2975
2976         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2977             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2978                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2979                            "invitation to re-invoke a persistent group");
2980                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2981         } else if (!wpa_s->conf->persistent_reconnect)
2982                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2983
2984         for (s = wpa_s->conf->ssid; s; s = s->next) {
2985                 if (s->disabled == 2 &&
2986                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2987                     s->ssid_len == ssid_len &&
2988                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2989                         break;
2990         }
2991
2992         if (!s) {
2993                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2994                            " requested reinvocation of an unknown group",
2995                            MAC2STR(sa));
2996                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2997         }
2998
2999         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
3000                 *go = 1;
3001                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
3002                         wpa_printf(MSG_DEBUG, "P2P: The only available "
3003                                    "interface is already in use - reject "
3004                                    "invitation");
3005                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3006                 }
3007                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3008         } else if (s->mode == WPAS_MODE_P2P_GO) {
3009                 *go = 1;
3010                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3011                 {
3012                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3013                                    "interface address for the group");
3014                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3015                 }
3016                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3017                           ETH_ALEN);
3018         }
3019
3020 accept_inv:
3021         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3022
3023         /* Get one of the frequencies currently in use */
3024         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
3025                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3026                 wpas_p2p_set_own_freq_preference(wpa_s, res);
3027
3028                 if (wpa_s->num_multichan_concurrent < 2 ||
3029                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3030                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3031                         *force_freq = res;
3032                 }
3033         }
3034
3035         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3036             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3037                 if (*go == 0) {
3038                         /* We are the client */
3039                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3040                                    "running a GO but we are capable of MCC, "
3041                                    "figure out the best channel to use");
3042                         *force_freq = 0;
3043                 } else if (!freq_included(channels, *force_freq)) {
3044                         /* We are the GO, and *force_freq is not in the
3045                          * intersection */
3046                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3047                                    "in intersection but we are capable of MCC, "
3048                                    "figure out the best channel to use",
3049                                    *force_freq);
3050                         *force_freq = 0;
3051                 }
3052         }
3053
3054         return P2P_SC_SUCCESS;
3055 }
3056
3057
3058 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3059                                      const u8 *ssid, size_t ssid_len,
3060                                      const u8 *go_dev_addr, u8 status,
3061                                      int op_freq)
3062 {
3063         struct wpa_supplicant *wpa_s = ctx;
3064         struct wpa_ssid *s;
3065
3066         for (s = wpa_s->conf->ssid; s; s = s->next) {
3067                 if (s->disabled == 2 &&
3068                     s->ssid_len == ssid_len &&
3069                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3070                         break;
3071         }
3072
3073         if (status == P2P_SC_SUCCESS) {
3074                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3075                            " was accepted; op_freq=%d MHz, SSID=%s",
3076                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3077                 if (s) {
3078                         int go = s->mode == WPAS_MODE_P2P_GO;
3079                         wpas_p2p_group_add_persistent(
3080                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3081                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3082                 } else if (bssid) {
3083                         wpa_s->user_initiated_pd = 0;
3084                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3085                                       wpa_s->p2p_wps_method, 0, op_freq,
3086                                       ssid, ssid_len);
3087                 }
3088                 return;
3089         }
3090
3091         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3092                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3093                            " was rejected (status %u)", MAC2STR(sa), status);
3094                 return;
3095         }
3096
3097         if (!s) {
3098                 if (bssid) {
3099                         wpa_msg_global(wpa_s, MSG_INFO,
3100                                        P2P_EVENT_INVITATION_RECEIVED
3101                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3102                                        " bssid=" MACSTR " unknown-network",
3103                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3104                                        MAC2STR(bssid));
3105                 } else {
3106                         wpa_msg_global(wpa_s, MSG_INFO,
3107                                        P2P_EVENT_INVITATION_RECEIVED
3108                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3109                                        " unknown-network",
3110                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3111                 }
3112                 return;
3113         }
3114
3115         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3116                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3117                                "sa=" MACSTR " persistent=%d freq=%d",
3118                                MAC2STR(sa), s->id, op_freq);
3119         } else {
3120                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3121                                "sa=" MACSTR " persistent=%d",
3122                                MAC2STR(sa), s->id);
3123         }
3124 }
3125
3126
3127 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3128                                         struct wpa_ssid *ssid,
3129                                         const u8 *peer, int inv)
3130 {
3131         size_t i;
3132
3133         if (ssid == NULL)
3134                 return;
3135
3136         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3137                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3138                               ETH_ALEN) == 0)
3139                         break;
3140         }
3141         if (i >= ssid->num_p2p_clients) {
3142                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3143                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3144                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3145                                    "due to invitation result", ssid->id);
3146                         wpas_notify_network_removed(wpa_s, ssid);
3147                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3148                         return;
3149                 }
3150                 return; /* Peer not found in client list */
3151         }
3152
3153         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3154                    "group %d client list%s",
3155                    MAC2STR(peer), ssid->id,
3156                    inv ? " due to invitation result" : "");
3157         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3158                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3159                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3160         ssid->num_p2p_clients--;
3161         if (wpa_s->parent->conf->update_config &&
3162             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3163                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3164 }
3165
3166
3167 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3168                                           const u8 *peer)
3169 {
3170         struct wpa_ssid *ssid;
3171
3172         wpa_s = wpa_s->global->p2p_invite_group;
3173         if (wpa_s == NULL)
3174                 return; /* No known invitation group */
3175         ssid = wpa_s->current_ssid;
3176         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3177             !ssid->p2p_persistent_group)
3178                 return; /* Not operating as a GO in persistent group */
3179         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3180                                        ssid->ssid, ssid->ssid_len);
3181         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3182 }
3183
3184
3185 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3186                                    const struct p2p_channels *channels,
3187                                    const u8 *peer, int neg_freq,
3188                                    int peer_oper_freq)
3189 {
3190         struct wpa_supplicant *wpa_s = ctx;
3191         struct wpa_ssid *ssid;
3192         int freq;
3193
3194         if (bssid) {
3195                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3196                                "status=%d " MACSTR,
3197                                status, MAC2STR(bssid));
3198         } else {
3199                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3200                                "status=%d ", status);
3201         }
3202         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3203
3204         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3205                    status, MAC2STR(peer));
3206         if (wpa_s->pending_invite_ssid_id == -1) {
3207                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3208                         wpas_remove_persistent_client(wpa_s, peer);
3209                 return; /* Invitation to active group */
3210         }
3211
3212         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3213                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3214                            "invitation exchange to indicate readiness for "
3215                            "re-invocation");
3216         }
3217
3218         if (status != P2P_SC_SUCCESS) {
3219                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3220                         ssid = wpa_config_get_network(
3221                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3222                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3223                 }
3224                 wpas_p2p_remove_pending_group_interface(wpa_s);
3225                 return;
3226         }
3227
3228         ssid = wpa_config_get_network(wpa_s->conf,
3229                                       wpa_s->pending_invite_ssid_id);
3230         if (ssid == NULL) {
3231                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3232                            "data matching with invitation");
3233                 return;
3234         }
3235
3236         /*
3237          * The peer could have missed our ctrl::ack frame for Invitation
3238          * Response and continue retransmitting the frame. To reduce the
3239          * likelihood of the peer not getting successful TX status for the
3240          * Invitation Response frame, wait a short time here before starting
3241          * the persistent group so that we will remain on the current channel to
3242          * acknowledge any possible retransmission from the peer.
3243          */
3244         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3245                 "starting persistent group");
3246         os_sleep(0, 50000);
3247
3248         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3249             freq_included(channels, neg_freq))
3250                 freq = neg_freq;
3251         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3252                  freq_included(channels, peer_oper_freq))
3253                 freq = peer_oper_freq;
3254         else
3255                 freq = 0;
3256
3257         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3258                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3259         wpas_p2p_group_add_persistent(wpa_s, ssid,
3260                                       ssid->mode == WPAS_MODE_P2P_GO,
3261                                       wpa_s->p2p_persistent_go_freq,
3262                                       freq,
3263                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3264                                       channels,
3265                                       ssid->mode == WPAS_MODE_P2P_GO ?
3266                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3267                                       0);
3268 }
3269
3270
3271 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3272                                     unsigned int freq)
3273 {
3274         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3275                 return 1;
3276         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3277 }
3278
3279
3280 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3281 {
3282         reg->channel[reg->channels] = chan;
3283         reg->channels++;
3284 }
3285
3286
3287 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3288                                      struct p2p_channels *chan,
3289                                      struct p2p_channels *cli_chan)
3290 {
3291         int i, cla = 0;
3292
3293         os_memset(cli_chan, 0, sizeof(*cli_chan));
3294
3295         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3296                    "band");
3297
3298         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3299         chan->reg_class[cla].reg_class = 81;
3300         chan->reg_class[cla].channels = 0;
3301         for (i = 0; i < 11; i++) {
3302                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3303                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3304         }
3305         if (chan->reg_class[cla].channels)
3306                 cla++;
3307
3308         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3309                    "band");
3310
3311         /* Operating class 115 - 5 GHz, channels 36-48 */
3312         chan->reg_class[cla].reg_class = 115;
3313         chan->reg_class[cla].channels = 0;
3314         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3315                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3316         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3317                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3318         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3319                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3320         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3321                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3322         if (chan->reg_class[cla].channels)
3323                 cla++;
3324
3325         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3326                    "band");
3327
3328         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3329         chan->reg_class[cla].reg_class = 124;
3330         chan->reg_class[cla].channels = 0;
3331         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3332                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3333         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3334                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3335         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3336                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3337         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3338                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3339         if (chan->reg_class[cla].channels)
3340                 cla++;
3341
3342         chan->reg_classes = cla;
3343         return 0;
3344 }
3345
3346
3347 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3348                                           u16 num_modes,
3349                                           enum hostapd_hw_mode mode)
3350 {
3351         u16 i;
3352
3353         for (i = 0; i < num_modes; i++) {
3354                 if (modes[i].mode == mode)
3355                         return &modes[i];
3356         }
3357
3358         return NULL;
3359 }
3360
3361
3362 enum chan_allowed {
3363         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3364 };
3365
3366 static int has_channel(struct wpa_global *global,
3367                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3368 {
3369         int i;
3370         unsigned int freq;
3371
3372         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3373                 chan * 5;
3374         if (wpas_p2p_disallowed_freq(global, freq))
3375                 return NOT_ALLOWED;
3376
3377         for (i = 0; i < mode->num_channels; i++) {
3378                 if (mode->channels[i].chan == chan) {
3379                         if (flags)
3380                                 *flags = mode->channels[i].flag;
3381                         if (mode->channels[i].flag &
3382                             (HOSTAPD_CHAN_DISABLED |
3383                              HOSTAPD_CHAN_RADAR))
3384                                 return NOT_ALLOWED;
3385                         if (mode->channels[i].flag &
3386                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3387                              HOSTAPD_CHAN_NO_IBSS))
3388                                 return PASSIVE_ONLY;
3389                         return ALLOWED;
3390                 }
3391         }
3392
3393         return NOT_ALLOWED;
3394 }
3395
3396
3397 struct p2p_oper_class_map {
3398         enum hostapd_hw_mode mode;
3399         u8 op_class;
3400         u8 min_chan;
3401         u8 max_chan;
3402         u8 inc;
3403         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3404 };
3405
3406 static struct p2p_oper_class_map op_class[] = {
3407         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3408 #if 0 /* Do not enable HT40 on 2 GHz for now */
3409         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3410         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3411 #endif
3412         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3413         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3414         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3415         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3416         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3417         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3418
3419         /*
3420          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3421          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3422          * 80 MHz, but currently use the following definition for simplicity
3423          * (these center frequencies are not actual channels, which makes
3424          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3425          * removing invalid channels.
3426          */
3427         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3428         { -1, 0, 0, 0, 0, BW20 }
3429 };
3430
3431
3432 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3433                                      struct hostapd_hw_modes *mode,
3434                                      u8 channel)
3435 {
3436         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3437         unsigned int i;
3438
3439         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3440                 return 0;
3441
3442         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3443                 /*
3444                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3445                  * so the center channel is 6 channels away from the start/end.
3446                  */
3447                 if (channel >= center_channels[i] - 6 &&
3448                     channel <= center_channels[i] + 6)
3449                         return center_channels[i];
3450
3451         return 0;
3452 }
3453
3454
3455 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3456                                                struct hostapd_hw_modes *mode,
3457                                                u8 channel, u8 bw)
3458 {
3459         u8 center_chan;
3460         int i, flags;
3461         enum chan_allowed res, ret = ALLOWED;
3462
3463         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3464         if (!center_chan)
3465                 return NOT_ALLOWED;
3466         if (center_chan >= 58 && center_chan <= 138)
3467                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3468
3469         /* check all the channels are available */
3470         for (i = 0; i < 4; i++) {
3471                 int adj_chan = center_chan - 6 + i * 4;
3472
3473                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3474                 if (res == NOT_ALLOWED)
3475                         return NOT_ALLOWED;
3476                 if (res == PASSIVE_ONLY)
3477                         ret = PASSIVE_ONLY;
3478
3479                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3480                         return NOT_ALLOWED;
3481                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3482                         return NOT_ALLOWED;
3483                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3484                         return NOT_ALLOWED;
3485                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3486                         return NOT_ALLOWED;
3487         }
3488
3489         return ret;
3490 }
3491
3492
3493 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3494                                                  struct hostapd_hw_modes *mode,
3495                                                  u8 channel, u8 bw)
3496 {
3497         int flag = 0;
3498         enum chan_allowed res, res2;
3499
3500         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3501         if (bw == BW40MINUS) {
3502                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3503                         return NOT_ALLOWED;
3504                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3505         } else if (bw == BW40PLUS) {
3506                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3507                         return NOT_ALLOWED;
3508                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3509         } else if (bw == BW80) {
3510                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3511         }
3512
3513         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3514                 return NOT_ALLOWED;
3515         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3516                 return PASSIVE_ONLY;
3517         return res;
3518 }
3519
3520
3521 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3522                                    struct p2p_channels *chan,
3523                                    struct p2p_channels *cli_chan)
3524 {
3525         struct hostapd_hw_modes *mode;
3526         int cla, op, cli_cla;
3527
3528         if (wpa_s->hw.modes == NULL) {
3529                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3530                            "of all supported channels; assume dualband "
3531                            "support");
3532                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3533         }
3534
3535         cla = cli_cla = 0;
3536
3537         for (op = 0; op_class[op].op_class; op++) {
3538                 struct p2p_oper_class_map *o = &op_class[op];
3539                 u8 ch;
3540                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3541
3542                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3543                 if (mode == NULL)
3544                         continue;
3545                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3546                         enum chan_allowed res;
3547                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3548                         if (res == ALLOWED) {
3549                                 if (reg == NULL) {
3550                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3551                                                    o->op_class);
3552                                         reg = &chan->reg_class[cla];
3553                                         cla++;
3554                                         reg->reg_class = o->op_class;
3555                                 }
3556                                 reg->channel[reg->channels] = ch;
3557                                 reg->channels++;
3558                         } else if (res == PASSIVE_ONLY &&
3559                                    wpa_s->conf->p2p_add_cli_chan) {
3560                                 if (cli_reg == NULL) {
3561                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3562                                                    o->op_class);
3563                                         cli_reg = &cli_chan->reg_class[cli_cla];
3564                                         cli_cla++;
3565                                         cli_reg->reg_class = o->op_class;
3566                                 }
3567                                 cli_reg->channel[cli_reg->channels] = ch;
3568                                 cli_reg->channels++;
3569                         }
3570                 }
3571                 if (reg) {
3572                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3573                                     reg->channel, reg->channels);
3574                 }
3575                 if (cli_reg) {
3576                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3577                                     cli_reg->channel, cli_reg->channels);
3578                 }
3579         }
3580
3581         chan->reg_classes = cla;
3582         cli_chan->reg_classes = cli_cla;
3583
3584         return 0;
3585 }
3586
3587
3588 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3589                            struct hostapd_hw_modes *mode, u8 channel)
3590 {
3591         int op;
3592         enum chan_allowed ret;
3593
3594         for (op = 0; op_class[op].op_class; op++) {
3595                 struct p2p_oper_class_map *o = &op_class[op];
3596                 u8 ch;
3597
3598                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3599                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3600                             o->bw == BW20 || ch != channel)
3601                                 continue;
3602                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3603                         if (ret == ALLOWED)
3604                                 return (o->bw == BW40MINUS) ? -1 : 1;
3605                 }
3606         }
3607         return 0;
3608 }
3609
3610
3611 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3612                               struct hostapd_hw_modes *mode, u8 channel)
3613 {
3614         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3615                 return 0;
3616
3617         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3618 }
3619
3620
3621 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3622                         size_t buf_len)
3623 {
3624         struct wpa_supplicant *wpa_s = ctx;
3625
3626         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3627                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3628                         break;
3629         }
3630         if (wpa_s == NULL)
3631                 return -1;
3632
3633         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3634 }
3635
3636
3637 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3638 {
3639         struct wpa_supplicant *wpa_s = ctx;
3640
3641         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3642                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3643                 if (ssid == NULL)
3644                         continue;
3645                 if (ssid->mode != WPAS_MODE_INFRA)
3646                         continue;
3647                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3648                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3649                         continue;
3650                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3651                         return 1;
3652         }
3653
3654         return 0;
3655 }
3656
3657
3658 static int wpas_is_concurrent_session_active(void *ctx)
3659 {
3660         struct wpa_supplicant *wpa_s = ctx;
3661         struct wpa_supplicant *ifs;
3662
3663         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3664                 if (ifs == wpa_s)
3665                         continue;
3666                 if (ifs->wpa_state > WPA_ASSOCIATED)
3667                         return 1;
3668         }
3669         return 0;
3670 }
3671
3672
3673 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3674 {
3675         struct wpa_supplicant *wpa_s = ctx;
3676         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3677 }
3678
3679
3680 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3681 {
3682         struct wpa_interface iface;
3683         struct wpa_supplicant *p2pdev_wpa_s;
3684         char ifname[100];
3685         char force_name[100];
3686         int ret;
3687
3688         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3689                     wpa_s->ifname);
3690         force_name[0] = '\0';
3691         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3692         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3693                              force_name, wpa_s->pending_interface_addr, NULL);
3694         if (ret < 0) {
3695                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3696                 return ret;
3697         }
3698         os_strlcpy(wpa_s->pending_interface_name, ifname,
3699                    sizeof(wpa_s->pending_interface_name));
3700
3701         os_memset(&iface, 0, sizeof(iface));
3702         iface.p2p_mgmt = 1;
3703         iface.ifname = wpa_s->pending_interface_name;
3704         iface.driver = wpa_s->driver->name;
3705         iface.driver_param = wpa_s->conf->driver_param;
3706
3707         /*
3708          * If a P2P Device configuration file was given, use it as the interface
3709          * configuration file (instead of using parent's configuration file.
3710          */
3711         if (wpa_s->conf_p2p_dev) {
3712                 iface.confname = wpa_s->conf_p2p_dev;
3713                 iface.ctrl_interface = NULL;
3714         } else {
3715                 iface.confname = wpa_s->confname;
3716                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3717         }
3718         iface.conf_p2p_dev = NULL;
3719
3720         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3721         if (!p2pdev_wpa_s) {
3722                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3723                 return -1;
3724         }
3725         p2pdev_wpa_s->parent = wpa_s;
3726
3727         wpa_s->pending_interface_name[0] = '\0';
3728         return 0;
3729 }
3730
3731
3732 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3733                                const u8 *noa, size_t noa_len)
3734 {
3735         struct wpa_supplicant *wpa_s, *intf = ctx;
3736         char hex[100];
3737
3738         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3739                 if (wpa_s->waiting_presence_resp)
3740                         break;
3741         }
3742         if (!wpa_s) {
3743                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3744                 return;
3745         }
3746         wpa_s->waiting_presence_resp = 0;
3747
3748         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3749         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3750                 " status=%u noa=%s", MAC2STR(src), status, hex);
3751 }
3752
3753
3754 static int _wpas_p2p_in_progress(void *ctx)
3755 {
3756         struct wpa_supplicant *wpa_s = ctx;
3757         return wpas_p2p_in_progress(wpa_s);
3758 }
3759
3760
3761 /**
3762  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3763  * @global: Pointer to global data from wpa_supplicant_init()
3764  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3765  * Returns: 0 on success, -1 on failure
3766  */
3767 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3768 {
3769         struct p2p_config p2p;
3770         unsigned int r;
3771         int i;
3772
3773         if (wpa_s->conf->p2p_disabled)
3774                 return 0;
3775
3776         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3777                 return 0;
3778
3779         if (global->p2p)
3780                 return 0;
3781
3782         os_memset(&p2p, 0, sizeof(p2p));
3783         p2p.cb_ctx = wpa_s;
3784         p2p.debug_print = wpas_p2p_debug_print;
3785         p2p.p2p_scan = wpas_p2p_scan;
3786         p2p.send_action = wpas_send_action;
3787         p2p.send_action_done = wpas_send_action_done;
3788         p2p.go_neg_completed = wpas_go_neg_completed;
3789         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3790         p2p.dev_found = wpas_dev_found;
3791         p2p.dev_lost = wpas_dev_lost;
3792         p2p.find_stopped = wpas_find_stopped;
3793         p2p.start_listen = wpas_start_listen;
3794         p2p.stop_listen = wpas_stop_listen;
3795         p2p.send_probe_resp = wpas_send_probe_resp;
3796         p2p.sd_request = wpas_sd_request;
3797         p2p.sd_response = wpas_sd_response;
3798         p2p.prov_disc_req = wpas_prov_disc_req;
3799         p2p.prov_disc_resp = wpas_prov_disc_resp;
3800         p2p.prov_disc_fail = wpas_prov_disc_fail;
3801         p2p.invitation_process = wpas_invitation_process;
3802         p2p.invitation_received = wpas_invitation_received;
3803         p2p.invitation_result = wpas_invitation_result;
3804         p2p.get_noa = wpas_get_noa;
3805         p2p.go_connected = wpas_go_connected;
3806         p2p.presence_resp = wpas_presence_resp;
3807         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3808         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3809
3810         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3811         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3812         p2p.dev_name = wpa_s->conf->device_name;
3813         p2p.manufacturer = wpa_s->conf->manufacturer;
3814         p2p.model_name = wpa_s->conf->model_name;
3815         p2p.model_number = wpa_s->conf->model_number;
3816         p2p.serial_number = wpa_s->conf->serial_number;
3817         if (wpa_s->wps) {
3818                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3819                 p2p.config_methods = wpa_s->wps->config_methods;
3820         }
3821
3822         if (wpa_s->conf->p2p_listen_reg_class &&
3823             wpa_s->conf->p2p_listen_channel) {
3824                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3825                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3826         } else {
3827                 p2p.reg_class = 81;
3828                 /*
3829                  * Pick one of the social channels randomly as the listen
3830                  * channel.
3831                  */
3832                 os_get_random((u8 *) &r, sizeof(r));
3833                 p2p.channel = 1 + (r % 3) * 5;
3834         }
3835         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3836
3837         if (wpa_s->conf->p2p_oper_reg_class &&
3838             wpa_s->conf->p2p_oper_channel) {
3839                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3840                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3841                 p2p.cfg_op_channel = 1;
3842                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3843                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3844
3845         } else {
3846                 p2p.op_reg_class = 81;
3847                 /*
3848                  * Use random operation channel from (1, 6, 11) if no other
3849                  * preference is indicated.
3850                  */
3851                 os_get_random((u8 *) &r, sizeof(r));
3852                 p2p.op_channel = 1 + (r % 3) * 5;
3853                 p2p.cfg_op_channel = 0;
3854                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3855                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3856         }
3857
3858         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3859                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3860                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3861         }
3862
3863         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3864                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3865                 p2p.country[2] = 0x04;
3866         } else
3867                 os_memcpy(p2p.country, "XX\x04", 3);
3868
3869         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3870                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3871                            "channel list");
3872                 return -1;
3873         }
3874
3875         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3876                   WPS_DEV_TYPE_LEN);
3877
3878         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3879         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3880                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3881
3882         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3883                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3884
3885         p2p.max_peers = 100;
3886
3887         if (wpa_s->conf->p2p_ssid_postfix) {
3888                 p2p.ssid_postfix_len =
3889                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3890                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3891                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3892                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3893                           p2p.ssid_postfix_len);
3894         }
3895
3896         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3897
3898         p2p.max_listen = wpa_s->max_remain_on_chan;
3899
3900         global->p2p = p2p_init(&p2p);
3901         if (global->p2p == NULL)
3902                 return -1;
3903         global->p2p_init_wpa_s = wpa_s;
3904
3905         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3906                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3907                         continue;
3908                 p2p_add_wps_vendor_extension(
3909                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3910         }
3911
3912         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3913
3914         return 0;
3915 }
3916
3917
3918 /**
3919  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3920  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3921  *
3922  * This function deinitialize per-interface P2P data.
3923  */
3924 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3925 {
3926         if (wpa_s->driver && wpa_s->drv_priv)
3927                 wpa_drv_probe_req_report(wpa_s, 0);
3928
3929         if (wpa_s->go_params) {
3930                 /* Clear any stored provisioning info */
3931                 p2p_clear_provisioning_info(
3932                         wpa_s->global->p2p,
3933                         wpa_s->go_params->peer_device_addr);
3934         }
3935
3936         os_free(wpa_s->go_params);
3937         wpa_s->go_params = NULL;
3938         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
3939         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3940         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3941         wpa_s->p2p_long_listen = 0;
3942         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3943         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3944         wpas_p2p_remove_pending_group_interface(wpa_s);
3945         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3946         wpas_p2p_listen_work_done(wpa_s);
3947         if (wpa_s->p2p_send_action_work) {
3948                 os_free(wpa_s->p2p_send_action_work->ctx);
3949                 radio_work_done(wpa_s->p2p_send_action_work);
3950                 wpa_s->p2p_send_action_work = NULL;
3951         }
3952         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3953
3954         wpabuf_free(wpa_s->p2p_oob_dev_pw);
3955         wpa_s->p2p_oob_dev_pw = NULL;
3956
3957         /* TODO: remove group interface from the driver if this wpa_s instance
3958          * is on top of a P2P group interface */
3959 }
3960
3961
3962 /**
3963  * wpas_p2p_deinit_global - Deinitialize global P2P module
3964  * @global: Pointer to global data from wpa_supplicant_init()
3965  *
3966  * This function deinitializes the global (per device) P2P module.
3967  */
3968 void wpas_p2p_deinit_global(struct wpa_global *global)
3969 {
3970         struct wpa_supplicant *wpa_s, *tmp;
3971
3972         wpa_s = global->ifaces;
3973         if (wpa_s)
3974                 wpas_p2p_service_flush(wpa_s);
3975
3976         if (global->p2p == NULL)
3977                 return;
3978
3979         /* Remove remaining P2P group interfaces */
3980         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3981                 wpa_s = wpa_s->next;
3982         while (wpa_s) {
3983                 tmp = global->ifaces;
3984                 while (tmp &&
3985                        (tmp == wpa_s ||
3986                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3987                         tmp = tmp->next;
3988                 }
3989                 if (tmp == NULL)
3990                         break;
3991                 /* Disconnect from the P2P group and deinit the interface */
3992                 wpas_p2p_disconnect(tmp);
3993         }
3994
3995         /*
3996          * Deinit GO data on any possibly remaining interface (if main
3997          * interface is used as GO).
3998          */
3999         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4000                 if (wpa_s->ap_iface)
4001                         wpas_p2p_group_deinit(wpa_s);
4002         }
4003
4004         p2p_deinit(global->p2p);
4005         global->p2p = NULL;
4006         global->p2p_init_wpa_s = NULL;
4007 }
4008
4009
4010 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4011 {
4012         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4013             wpa_s->conf->p2p_no_group_iface)
4014                 return 0; /* separate interface disabled per configuration */
4015         if (wpa_s->drv_flags &
4016             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4017              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4018                 return 1; /* P2P group requires a new interface in every case
4019                            */
4020         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4021                 return 0; /* driver does not support concurrent operations */
4022         if (wpa_s->global->ifaces->next)
4023                 return 1; /* more that one interface already in use */
4024         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4025                 return 1; /* this interface is already in use */
4026         return 0;
4027 }
4028
4029
4030 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4031                                  const u8 *peer_addr,
4032                                  enum p2p_wps_method wps_method,
4033                                  int go_intent, const u8 *own_interface_addr,
4034                                  unsigned int force_freq, int persistent_group,
4035                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4036 {
4037         if (persistent_group && wpa_s->conf->persistent_reconnect)
4038                 persistent_group = 2;
4039
4040         /*
4041          * Increase GO config timeout if HT40 is used since it takes some time
4042          * to scan channels for coex purposes before the BSS can be started.
4043          */
4044         p2p_set_config_timeout(wpa_s->global->p2p,
4045                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4046
4047         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4048                            go_intent, own_interface_addr, force_freq,
4049                            persistent_group, ssid ? ssid->ssid : NULL,
4050                            ssid ? ssid->ssid_len : 0,
4051                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4052                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4053                            0);
4054 }
4055
4056
4057 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4058                                 const u8 *peer_addr,
4059                                 enum p2p_wps_method wps_method,
4060                                 int go_intent, const u8 *own_interface_addr,
4061                                 unsigned int force_freq, int persistent_group,
4062                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4063 {
4064         if (persistent_group && wpa_s->conf->persistent_reconnect)
4065                 persistent_group = 2;
4066
4067         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4068                              go_intent, own_interface_addr, force_freq,
4069                              persistent_group, ssid ? ssid->ssid : NULL,
4070                              ssid ? ssid->ssid_len : 0, pref_freq,
4071                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4072                              0);
4073 }
4074
4075
4076 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4077 {
4078         wpa_s->p2p_join_scan_count++;
4079         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4080                    wpa_s->p2p_join_scan_count);
4081         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4082                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4083                            " for join operationg - stop join attempt",
4084                            MAC2STR(wpa_s->pending_join_iface_addr));
4085                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4086                 if (wpa_s->p2p_auto_pd) {
4087                         wpa_s->p2p_auto_pd = 0;
4088                         wpa_msg_global(wpa_s, MSG_INFO,
4089                                        P2P_EVENT_PROV_DISC_FAILURE
4090                                        " p2p_dev_addr=" MACSTR " status=N/A",
4091                                        MAC2STR(wpa_s->pending_join_dev_addr));
4092                         return;
4093                 }
4094                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4095                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4096         }
4097 }
4098
4099
4100 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4101 {
4102         int *freqs, res, num, i;
4103
4104         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4105                 /* Multiple channels are supported and not all are in use */
4106                 return 0;
4107         }
4108
4109         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4110         if (!freqs)
4111                 return 1;
4112
4113         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4114                                         wpa_s->num_multichan_concurrent);
4115         if (num < 0) {
4116                 res = 1;
4117                 goto exit_free;
4118         }
4119
4120         for (i = 0; i < num; i++) {
4121                 if (freqs[i] == freq) {
4122                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4123                                    freq);
4124                         res = 0;
4125                         goto exit_free;
4126                 }
4127         }
4128
4129         res = 1;
4130
4131 exit_free:
4132         os_free(freqs);
4133         return res;
4134 }
4135
4136
4137 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4138                             const u8 *peer_dev_addr)
4139 {
4140         struct wpa_bss *bss;
4141         int updated;
4142
4143         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4144         if (bss == NULL)
4145                 return -1;
4146         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4147                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4148                            "last scan");
4149                 return 0;
4150         }
4151
4152         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4153                                     &bss->last_update);
4154         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4155                    "%ld.%06ld (%supdated in last scan)",
4156                    bss->last_update.sec, bss->last_update.usec,
4157                    updated ? "": "not ");
4158
4159         return updated;
4160 }
4161
4162
4163 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4164                                    struct wpa_scan_results *scan_res)
4165 {
4166         struct wpa_bss *bss = NULL;
4167         int freq;
4168         u8 iface_addr[ETH_ALEN];
4169
4170         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4171
4172         if (wpa_s->global->p2p_disabled)
4173                 return;
4174
4175         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4176                    scan_res ? (int) scan_res->num : -1,
4177                    wpa_s->p2p_auto_join ? "auto_" : "");
4178
4179         if (scan_res)
4180                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4181
4182         if (wpa_s->p2p_auto_pd) {
4183                 int join = wpas_p2p_peer_go(wpa_s,
4184                                             wpa_s->pending_join_dev_addr);
4185                 if (join == 0 &&
4186                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4187                         wpa_s->auto_pd_scan_retry++;
4188                         bss = wpa_bss_get_bssid_latest(
4189                                 wpa_s, wpa_s->pending_join_dev_addr);
4190                         if (bss) {
4191                                 freq = bss->freq;
4192                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4193                                            "the peer " MACSTR " at %d MHz",
4194                                            wpa_s->auto_pd_scan_retry,
4195                                            MAC2STR(wpa_s->
4196                                                    pending_join_dev_addr),
4197                                            freq);
4198                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4199                                 return;
4200                         }
4201                 }
4202
4203                 if (join < 0)
4204                         join = 0;
4205
4206                 wpa_s->p2p_auto_pd = 0;
4207                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4208                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4209                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4210                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4211                                       wpa_s->pending_join_dev_addr,
4212                                       wpa_s->pending_pd_config_methods, join,
4213                                       0, wpa_s->user_initiated_pd) < 0) {
4214                         wpa_s->p2p_auto_pd = 0;
4215                         wpa_msg_global(wpa_s, MSG_INFO,
4216                                        P2P_EVENT_PROV_DISC_FAILURE
4217                                        " p2p_dev_addr=" MACSTR " status=N/A",
4218                                        MAC2STR(wpa_s->pending_join_dev_addr));
4219                 }
4220                 return;
4221         }
4222
4223         if (wpa_s->p2p_auto_join) {
4224                 int join = wpas_p2p_peer_go(wpa_s,
4225                                             wpa_s->pending_join_dev_addr);
4226                 if (join < 0) {
4227                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4228                                    "running a GO -> use GO Negotiation");
4229                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4230                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4231                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4232                                          wpa_s->p2p_go_intent,
4233                                          wpa_s->p2p_connect_freq,
4234                                          wpa_s->p2p_persistent_id,
4235                                          wpa_s->p2p_pd_before_go_neg,
4236                                          wpa_s->p2p_go_ht40,
4237                                          wpa_s->p2p_go_vht);
4238                         return;
4239                 }
4240
4241                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4242                            "try to join the group", join ? "" :
4243                            " in older scan");
4244                 if (!join)
4245                         wpa_s->p2p_fallback_to_go_neg = 1;
4246         }
4247
4248         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4249                                  wpa_s->pending_join_iface_addr);
4250         if (freq < 0 &&
4251             p2p_get_interface_addr(wpa_s->global->p2p,
4252                                    wpa_s->pending_join_dev_addr,
4253                                    iface_addr) == 0 &&
4254             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4255         {
4256                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4257                            "address for join from " MACSTR " to " MACSTR
4258                            " based on newly discovered P2P peer entry",
4259                            MAC2STR(wpa_s->pending_join_iface_addr),
4260                            MAC2STR(iface_addr));
4261                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4262                           ETH_ALEN);
4263
4264                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4265                                          wpa_s->pending_join_iface_addr);
4266         }
4267         if (freq >= 0) {
4268                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4269                            "from P2P peer table: %d MHz", freq);
4270         }
4271         if (wpa_s->p2p_join_ssid_len) {
4272                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4273                            MACSTR " and SSID %s",
4274                            MAC2STR(wpa_s->pending_join_iface_addr),
4275                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4276                                         wpa_s->p2p_join_ssid_len));
4277                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4278                                   wpa_s->p2p_join_ssid,
4279                                   wpa_s->p2p_join_ssid_len);
4280         }
4281         if (!bss) {
4282                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4283                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4284                 bss = wpa_bss_get_bssid_latest(wpa_s,
4285                                                wpa_s->pending_join_iface_addr);
4286         }
4287         if (bss) {
4288                 freq = bss->freq;
4289                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4290                            "from BSS table: %d MHz (SSID %s)", freq,
4291                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4292         }
4293         if (freq > 0) {
4294                 u16 method;
4295
4296                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4297                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4298                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4299                                        "reason=FREQ_CONFLICT");
4300                         return;
4301                 }
4302
4303                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4304                            "prior to joining an existing group (GO " MACSTR
4305                            " freq=%u MHz)",
4306                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4307                 wpa_s->pending_pd_before_join = 1;
4308
4309                 switch (wpa_s->pending_join_wps_method) {
4310                 case WPS_PIN_DISPLAY:
4311                         method = WPS_CONFIG_KEYPAD;
4312                         break;
4313                 case WPS_PIN_KEYPAD:
4314                         method = WPS_CONFIG_DISPLAY;
4315                         break;
4316                 case WPS_PBC:
4317                         method = WPS_CONFIG_PUSHBUTTON;
4318                         break;
4319                 default:
4320                         method = 0;
4321                         break;
4322                 }
4323
4324                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4325                                                wpa_s->pending_join_dev_addr) ==
4326                      method)) {
4327                         /*
4328                          * We have already performed provision discovery for
4329                          * joining the group. Proceed directly to join
4330                          * operation without duplicated provision discovery. */
4331                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4332                                    "with " MACSTR " already done - proceed to "
4333                                    "join",
4334                                    MAC2STR(wpa_s->pending_join_dev_addr));
4335                         wpa_s->pending_pd_before_join = 0;
4336                         goto start;
4337                 }
4338
4339                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4340                                       wpa_s->pending_join_dev_addr, method, 1,
4341                                       freq, wpa_s->user_initiated_pd) < 0) {
4342                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4343                                    "Discovery Request before joining an "
4344                                    "existing group");
4345                         wpa_s->pending_pd_before_join = 0;
4346                         goto start;
4347                 }
4348                 return;
4349         }
4350
4351         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4352         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4353         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4354         wpas_p2p_check_join_scan_limit(wpa_s);
4355         return;
4356
4357 start:
4358         /* Start join operation immediately */
4359         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4360 }
4361
4362
4363 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4364                                    const u8 *ssid, size_t ssid_len)
4365 {
4366         int ret;
4367         struct wpa_driver_scan_params params;
4368         struct wpabuf *wps_ie, *ies;
4369         size_t ielen;
4370         int freqs[2] = { 0, 0 };
4371
4372         os_memset(&params, 0, sizeof(params));
4373
4374         /* P2P Wildcard SSID */
4375         params.num_ssids = 1;
4376         if (ssid && ssid_len) {
4377                 params.ssids[0].ssid = ssid;
4378                 params.ssids[0].ssid_len = ssid_len;
4379                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4380                 wpa_s->p2p_join_ssid_len = ssid_len;
4381         } else {
4382                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4383                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4384                 wpa_s->p2p_join_ssid_len = 0;
4385         }
4386
4387         wpa_s->wps->dev.p2p = 1;
4388         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4389                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4390                                         NULL);
4391         if (wps_ie == NULL) {
4392                 wpas_p2p_scan_res_join(wpa_s, NULL);
4393                 return;
4394         }
4395
4396         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4397         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4398         if (ies == NULL) {
4399                 wpabuf_free(wps_ie);
4400                 wpas_p2p_scan_res_join(wpa_s, NULL);
4401                 return;
4402         }
4403         wpabuf_put_buf(ies, wps_ie);
4404         wpabuf_free(wps_ie);
4405
4406         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4407
4408         params.p2p_probe = 1;
4409         params.extra_ies = wpabuf_head(ies);
4410         params.extra_ies_len = wpabuf_len(ies);
4411
4412         if (!freq) {
4413                 int oper_freq;
4414                 /*
4415                  * If freq is not provided, check the operating freq of the GO
4416                  * and use a single channel scan on if possible.
4417                  */
4418                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4419                                               wpa_s->pending_join_iface_addr);
4420                 if (oper_freq > 0)
4421                         freq = oper_freq;
4422         }
4423         if (freq > 0) {
4424                 freqs[0] = freq;
4425                 params.freqs = freqs;
4426         }
4427
4428         /*
4429          * Run a scan to update BSS table and start Provision Discovery once
4430          * the new scan results become available.
4431          */
4432         ret = wpa_drv_scan(wpa_s, &params);
4433         if (!ret) {
4434                 os_get_reltime(&wpa_s->scan_trigger_time);
4435                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4436                 wpa_s->own_scan_requested = 1;
4437         }
4438
4439         wpabuf_free(ies);
4440
4441         if (ret) {
4442                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4443                            "try again later");
4444                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4445                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4446                 wpas_p2p_check_join_scan_limit(wpa_s);
4447         }
4448 }
4449
4450
4451 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4452 {
4453         struct wpa_supplicant *wpa_s = eloop_ctx;
4454         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4455 }
4456
4457
4458 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4459                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4460                          int auto_join, int op_freq,
4461                          const u8 *ssid, size_t ssid_len)
4462 {
4463         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4464                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4465                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4466                    auto_join ? " (auto_join)" : "");
4467         if (ssid && ssid_len) {
4468                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4469                            wpa_ssid_txt(ssid, ssid_len));
4470         }
4471
4472         wpa_s->p2p_auto_pd = 0;
4473         wpa_s->p2p_auto_join = !!auto_join;
4474         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4475         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4476         wpa_s->pending_join_wps_method = wps_method;
4477
4478         /* Make sure we are not running find during connection establishment */
4479         wpas_p2p_stop_find(wpa_s);
4480
4481         wpa_s->p2p_join_scan_count = 0;
4482         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4483         return 0;
4484 }
4485
4486
4487 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4488                                const u8 *ssid, size_t ssid_len)
4489 {
4490         struct wpa_supplicant *group;
4491         struct p2p_go_neg_results res;
4492         struct wpa_bss *bss;
4493
4494         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4495         if (group == NULL)
4496                 return -1;
4497         if (group != wpa_s) {
4498                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4499                           sizeof(group->p2p_pin));
4500                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4501         } else {
4502                 /*
4503                  * Need to mark the current interface for p2p_group_formation
4504                  * when a separate group interface is not used. This is needed
4505                  * to allow p2p_cancel stop a pending p2p_connect-join.
4506                  * wpas_p2p_init_group_interface() addresses this for the case
4507                  * where a separate group interface is used.
4508                  */
4509                 wpa_s->global->p2p_group_formation = wpa_s;
4510         }
4511
4512         group->p2p_in_provisioning = 1;
4513         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4514
4515         os_memset(&res, 0, sizeof(res));
4516         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4517         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4518                   ETH_ALEN);
4519         res.wps_method = wpa_s->pending_join_wps_method;
4520         if (freq && ssid && ssid_len) {
4521                 res.freq = freq;
4522                 res.ssid_len = ssid_len;
4523                 os_memcpy(res.ssid, ssid, ssid_len);
4524         } else {
4525                 bss = wpa_bss_get_bssid_latest(wpa_s,
4526                                                wpa_s->pending_join_iface_addr);
4527                 if (bss) {
4528                         res.freq = bss->freq;
4529                         res.ssid_len = bss->ssid_len;
4530                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4531                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4532                                    bss->freq,
4533                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4534                 }
4535         }
4536
4537         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4538                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4539                            "starting client");
4540                 wpa_drv_cancel_remain_on_channel(wpa_s);
4541                 wpa_s->off_channel_freq = 0;
4542                 wpa_s->roc_waiting_drv_freq = 0;
4543         }
4544         wpas_start_wps_enrollee(group, &res);
4545
4546         /*
4547          * Allow a longer timeout for join-a-running-group than normal 15
4548          * second group formation timeout since the GO may not have authorized
4549          * our connection yet.
4550          */
4551         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4552         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4553                                wpa_s, NULL);
4554
4555         return 0;
4556 }
4557
4558
4559 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4560                                 int *force_freq, int *pref_freq, int go)
4561 {
4562         int *freqs, res;
4563         unsigned int freq_in_use = 0, num, i;
4564
4565         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4566         if (!freqs)
4567                 return -1;
4568
4569         num = get_shared_radio_freqs(wpa_s, freqs,
4570                                      wpa_s->num_multichan_concurrent);
4571         wpa_printf(MSG_DEBUG,
4572                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4573                    freq, wpa_s->num_multichan_concurrent, num);
4574
4575         if (freq > 0) {
4576                 int ret;
4577                 if (go)
4578                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4579                 else
4580                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4581                 if (!ret) {
4582                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4583                                    "(%u MHz) is not supported for P2P uses",
4584                                    freq);
4585                         res = -3;
4586                         goto exit_free;
4587                 }
4588
4589                 for (i = 0; i < num; i++) {
4590                         if (freqs[i] == freq)
4591                                 freq_in_use = 1;
4592                 }
4593
4594                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4595                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4596                                    freq);
4597                         res = -2;
4598                         goto exit_free;
4599                 }
4600                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4601                            "requested channel (%u MHz)", freq);
4602                 *force_freq = freq;
4603                 goto exit_ok;
4604         }
4605
4606         for (i = 0; i < num; i++) {
4607                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4608                         continue;
4609
4610                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4611                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4612                                    freqs[i]);
4613                         *pref_freq = freqs[i];
4614                 } else {
4615                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4616                                    freqs[i]);
4617                         *force_freq = freqs[i];
4618                 }
4619                 break;
4620         }
4621
4622         if (i == num) {
4623                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4624                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4625                         *force_freq = 0;
4626                 } else if (num < wpa_s->num_multichan_concurrent) {
4627                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4628                         *force_freq = 0;
4629                 } else {
4630                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4631                         res = -2;
4632                         goto exit_free;
4633                 }
4634         }
4635
4636 exit_ok:
4637         res = 0;
4638 exit_free:
4639         os_free(freqs);
4640         return res;
4641 }
4642
4643
4644 /**
4645  * wpas_p2p_connect - Request P2P Group Formation to be started
4646  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4647  * @peer_addr: Address of the peer P2P Device
4648  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4649  * @persistent_group: Whether to create a persistent group
4650  * @auto_join: Whether to select join vs. GO Negotiation automatically
4651  * @join: Whether to join an existing group (as a client) instead of starting
4652  *      Group Owner negotiation; @peer_addr is BSSID in that case
4653  * @auth: Whether to only authorize the connection instead of doing that and
4654  *      initiating Group Owner negotiation
4655  * @go_intent: GO Intent or -1 to use default
4656  * @freq: Frequency for the group or 0 for auto-selection
4657  * @persistent_id: Persistent group credentials to use for forcing GO
4658  *      parameters or -1 to generate new values (SSID/passphrase)
4659  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4660  *      interoperability workaround when initiating group formation
4661  * @ht40: Start GO with 40 MHz channel width
4662  * @vht:  Start GO with VHT support
4663  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4664  *      failure, -2 on failure due to channel not currently available,
4665  *      -3 if forced channel is not supported
4666  */
4667 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4668                      const char *pin, enum p2p_wps_method wps_method,
4669                      int persistent_group, int auto_join, int join, int auth,
4670                      int go_intent, int freq, int persistent_id, int pd,
4671                      int ht40, int vht)
4672 {
4673         int force_freq = 0, pref_freq = 0;
4674         int ret = 0, res;
4675         enum wpa_driver_if_type iftype;
4676         const u8 *if_addr;
4677         struct wpa_ssid *ssid = NULL;
4678
4679         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4680                 return -1;
4681
4682         if (persistent_id >= 0) {
4683                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4684                 if (ssid == NULL || ssid->disabled != 2 ||
4685                     ssid->mode != WPAS_MODE_P2P_GO)
4686                         return -1;
4687         }
4688
4689         os_free(wpa_s->global->add_psk);
4690         wpa_s->global->add_psk = NULL;
4691
4692         wpa_s->global->p2p_fail_on_wps_complete = 0;
4693
4694         if (go_intent < 0)
4695                 go_intent = wpa_s->conf->p2p_go_intent;
4696
4697         if (!auth)
4698                 wpa_s->p2p_long_listen = 0;
4699
4700         wpa_s->p2p_wps_method = wps_method;
4701         wpa_s->p2p_persistent_group = !!persistent_group;
4702         wpa_s->p2p_persistent_id = persistent_id;
4703         wpa_s->p2p_go_intent = go_intent;
4704         wpa_s->p2p_connect_freq = freq;
4705         wpa_s->p2p_fallback_to_go_neg = 0;
4706         wpa_s->p2p_pd_before_go_neg = !!pd;
4707         wpa_s->p2p_go_ht40 = !!ht40;
4708         wpa_s->p2p_go_vht = !!vht;
4709
4710         if (pin)
4711                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4712         else if (wps_method == WPS_PIN_DISPLAY) {
4713                 ret = wps_generate_pin();
4714                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4715                             ret);
4716                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4717                            wpa_s->p2p_pin);
4718         } else
4719                 wpa_s->p2p_pin[0] = '\0';
4720
4721         if (join || auto_join) {
4722                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4723                 if (auth) {
4724                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4725                                    "connect a running group from " MACSTR,
4726                                    MAC2STR(peer_addr));
4727                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4728                         return ret;
4729                 }
4730                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4731                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4732                                            iface_addr) < 0) {
4733                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4734                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4735                                          dev_addr);
4736                 }
4737                 if (auto_join) {
4738                         os_get_reltime(&wpa_s->p2p_auto_started);
4739                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4740                                    "%ld.%06ld",
4741                                    wpa_s->p2p_auto_started.sec,
4742                                    wpa_s->p2p_auto_started.usec);
4743                 }
4744                 wpa_s->user_initiated_pd = 1;
4745                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4746                                   auto_join, freq, NULL, 0) < 0)
4747                         return -1;
4748                 return ret;
4749         }
4750
4751         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4752                                    go_intent == 15);
4753         if (res)
4754                 return res;
4755         wpas_p2p_set_own_freq_preference(wpa_s,
4756                                          force_freq ? force_freq : pref_freq);
4757
4758         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4759
4760         if (wpa_s->create_p2p_iface) {
4761                 /* Prepare to add a new interface for the group */
4762                 iftype = WPA_IF_P2P_GROUP;
4763                 if (go_intent == 15)
4764                         iftype = WPA_IF_P2P_GO;
4765                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4766                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4767                                    "interface for the group");
4768                         return -1;
4769                 }
4770
4771                 if_addr = wpa_s->pending_interface_addr;
4772         } else
4773                 if_addr = wpa_s->own_addr;
4774
4775         if (auth) {
4776                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4777                                          go_intent, if_addr,
4778                                          force_freq, persistent_group, ssid,
4779                                          pref_freq) < 0)
4780                         return -1;
4781                 return ret;
4782         }
4783
4784         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4785                                   go_intent, if_addr, force_freq,
4786                                   persistent_group, ssid, pref_freq) < 0) {
4787                 if (wpa_s->create_p2p_iface)
4788                         wpas_p2p_remove_pending_group_interface(wpa_s);
4789                 return -1;
4790         }
4791         return ret;
4792 }
4793
4794
4795 /**
4796  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4797  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4798  * @freq: Frequency of the channel in MHz
4799  * @duration: Duration of the stay on the channel in milliseconds
4800  *
4801  * This callback is called when the driver indicates that it has started the
4802  * requested remain-on-channel duration.
4803  */
4804 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4805                                    unsigned int freq, unsigned int duration)
4806 {
4807         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4808                 return;
4809         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4810                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4811                               wpa_s->pending_listen_duration);
4812                 wpa_s->pending_listen_freq = 0;
4813         } else {
4814                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4815                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4816                            freq, duration);
4817         }
4818 }
4819
4820
4821 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4822                                  unsigned int timeout)
4823 {
4824         /* Limit maximum Listen state time based on driver limitation. */
4825         if (timeout > wpa_s->max_remain_on_chan)
4826                 timeout = wpa_s->max_remain_on_chan;
4827
4828         return p2p_listen(wpa_s->global->p2p, timeout);
4829 }
4830
4831
4832 /**
4833  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4834  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4835  * @freq: Frequency of the channel in MHz
4836  *
4837  * This callback is called when the driver indicates that a remain-on-channel
4838  * operation has been completed, i.e., the duration on the requested channel
4839  * has timed out.
4840  */
4841 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4842                                           unsigned int freq)
4843 {
4844         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4845                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4846                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4847         wpas_p2p_listen_work_done(wpa_s);
4848         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4849                 return;
4850         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4851                 return; /* P2P module started a new operation */
4852         if (offchannel_pending_action_tx(wpa_s))
4853                 return;
4854         if (wpa_s->p2p_long_listen > 0)
4855                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4856         if (wpa_s->p2p_long_listen > 0) {
4857                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4858                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4859         } else {
4860                 /*
4861                  * When listen duration is over, stop listen & update p2p_state
4862                  * to IDLE.
4863                  */
4864                 p2p_stop_listen(wpa_s->global->p2p);
4865         }
4866 }
4867
4868
4869 /**
4870  * wpas_p2p_group_remove - Remove a P2P group
4871  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4872  * @ifname: Network interface name of the group interface or "*" to remove all
4873  *      groups
4874  * Returns: 0 on success, -1 on failure
4875  *
4876  * This function is used to remove a P2P group. This can be used to disconnect
4877  * from a group in which the local end is a P2P Client or to end a P2P Group in
4878  * case the local end is the Group Owner. If a virtual network interface was
4879  * created for this group, that interface will be removed. Otherwise, only the
4880  * configured P2P group network will be removed from the interface.
4881  */
4882 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4883 {
4884         struct wpa_global *global = wpa_s->global;
4885
4886         if (os_strcmp(ifname, "*") == 0) {
4887                 struct wpa_supplicant *prev;
4888                 wpa_s = global->ifaces;
4889                 while (wpa_s) {
4890                         prev = wpa_s;
4891                         wpa_s = wpa_s->next;
4892                         if (prev->p2p_group_interface !=
4893                             NOT_P2P_GROUP_INTERFACE ||
4894                             (prev->current_ssid &&
4895                              prev->current_ssid->p2p_group))
4896                                 wpas_p2p_disconnect(prev);
4897                 }
4898                 return 0;
4899         }
4900
4901         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4902                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4903                         break;
4904         }
4905
4906         return wpas_p2p_disconnect(wpa_s);
4907 }
4908
4909
4910 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4911 {
4912         unsigned int r;
4913
4914         if (freq == 2) {
4915                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4916                            "band");
4917                 if (wpa_s->best_24_freq > 0 &&
4918                     p2p_supported_freq_go(wpa_s->global->p2p,
4919                                           wpa_s->best_24_freq)) {
4920                         freq = wpa_s->best_24_freq;
4921                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4922                                    "channel: %d MHz", freq);
4923                 } else {
4924                         os_get_random((u8 *) &r, sizeof(r));
4925                         freq = 2412 + (r % 3) * 25;
4926                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4927                                    "channel: %d MHz", freq);
4928                 }
4929         }
4930
4931         if (freq == 5) {
4932                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4933                            "band");
4934                 if (wpa_s->best_5_freq > 0 &&
4935                     p2p_supported_freq_go(wpa_s->global->p2p,
4936                                        wpa_s->best_5_freq)) {
4937                         freq = wpa_s->best_5_freq;
4938                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4939                                    "channel: %d MHz", freq);
4940                 } else {
4941                         os_get_random((u8 *) &r, sizeof(r));
4942                         freq = 5180 + (r % 4) * 20;
4943                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4944                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4945                                            "5 GHz channel for P2P group");
4946                                 return -1;
4947                         }
4948                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4949                                    "channel: %d MHz", freq);
4950                 }
4951         }
4952
4953         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4954                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4955                            "(%u MHz) is not supported for P2P uses",
4956                            freq);
4957                 return -1;
4958         }
4959
4960         return freq;
4961 }
4962
4963
4964 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4965                                    struct p2p_go_neg_results *params,
4966                                    int freq, int ht40, int vht,
4967                                    const struct p2p_channels *channels)
4968 {
4969         int res, *freqs;
4970         unsigned int pref_freq;
4971         unsigned int num, i;
4972
4973         os_memset(params, 0, sizeof(*params));
4974         params->role_go = 1;
4975         params->ht40 = ht40;
4976         params->vht = vht;
4977         if (freq) {
4978                 if (!freq_included(channels, freq)) {
4979                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4980                                    "accepted", freq);
4981                         return -1;
4982                 }
4983                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4984                            "frequency %d MHz", freq);
4985                 params->freq = freq;
4986         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4987                    wpa_s->conf->p2p_oper_channel >= 1 &&
4988                    wpa_s->conf->p2p_oper_channel <= 11 &&
4989                    freq_included(channels,
4990                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4991                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4992                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4993                            "frequency %d MHz", params->freq);
4994         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4995                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4996                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4997                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4998                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4999                     wpa_s->conf->p2p_oper_reg_class == 127) &&
5000                    freq_included(channels,
5001                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
5002                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5003                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5004                            "frequency %d MHz", params->freq);
5005         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5006                    wpa_s->best_overall_freq > 0 &&
5007                    p2p_supported_freq_go(wpa_s->global->p2p,
5008                                          wpa_s->best_overall_freq) &&
5009                    freq_included(channels, wpa_s->best_overall_freq)) {
5010                 params->freq = wpa_s->best_overall_freq;
5011                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5012                            "channel %d MHz", params->freq);
5013         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5014                    wpa_s->best_24_freq > 0 &&
5015                    p2p_supported_freq_go(wpa_s->global->p2p,
5016                                          wpa_s->best_24_freq) &&
5017                    freq_included(channels, wpa_s->best_24_freq)) {
5018                 params->freq = wpa_s->best_24_freq;
5019                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5020                            "channel %d MHz", params->freq);
5021         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5022                    wpa_s->best_5_freq > 0 &&
5023                    p2p_supported_freq_go(wpa_s->global->p2p,
5024                                          wpa_s->best_5_freq) &&
5025                    freq_included(channels, wpa_s->best_5_freq)) {
5026                 params->freq = wpa_s->best_5_freq;
5027                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5028                            "channel %d MHz", params->freq);
5029         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5030                                                   channels))) {
5031                 params->freq = pref_freq;
5032                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5033                            "channels", params->freq);
5034         } else {
5035                 int chan;
5036                 for (chan = 0; chan < 11; chan++) {
5037                         params->freq = 2412 + chan * 5;
5038                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
5039                                                       params->freq) &&
5040                             freq_included(channels, params->freq))
5041                                 break;
5042                 }
5043                 if (chan == 11) {
5044                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
5045                                    "allowed");
5046                         return -1;
5047                 }
5048                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
5049                            "known)", params->freq);
5050         }
5051
5052         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
5053         if (!freqs)
5054                 return -1;
5055
5056         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5057                                         wpa_s->num_multichan_concurrent);
5058         if (res < 0) {
5059                 os_free(freqs);
5060                 return -1;
5061         }
5062         num = res;
5063
5064         for (i = 0; i < num; i++) {
5065                 if (freq && freqs[i] == freq)
5066                         break;
5067                 if (!freq && freq_included(channels, freqs[i])) {
5068                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5069                                    freqs[i]);
5070                         params->freq = freqs[i];
5071                         break;
5072                 }
5073         }
5074
5075         if (i == num) {
5076                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5077                         if (freq)
5078                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5079                         else
5080                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5081                         os_free(freqs);
5082                         return -1;
5083                 } else if (num == 0) {
5084                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5085                 } else {
5086                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5087                 }
5088         }
5089
5090         os_free(freqs);
5091         return 0;
5092 }
5093
5094
5095 static struct wpa_supplicant *
5096 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5097                          int go)
5098 {
5099         struct wpa_supplicant *group_wpa_s;
5100
5101         if (!wpas_p2p_create_iface(wpa_s)) {
5102                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5103                         "operations");
5104                 wpa_s->p2p_first_connection_timeout = 0;
5105                 return wpa_s;
5106         }
5107
5108         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5109                                          WPA_IF_P2P_CLIENT) < 0) {
5110                 wpa_msg_global(wpa_s, MSG_ERROR,
5111                                "P2P: Failed to add group interface");
5112                 return NULL;
5113         }
5114         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5115         if (group_wpa_s == NULL) {
5116                 wpa_msg_global(wpa_s, MSG_ERROR,
5117                                "P2P: Failed to initialize group interface");
5118                 wpas_p2p_remove_pending_group_interface(wpa_s);
5119                 return NULL;
5120         }
5121
5122         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5123                 group_wpa_s->ifname);
5124         group_wpa_s->p2p_first_connection_timeout = 0;
5125         return group_wpa_s;
5126 }
5127
5128
5129 /**
5130  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5131  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5132  * @persistent_group: Whether to create a persistent group
5133  * @freq: Frequency for the group or 0 to indicate no hardcoding
5134  * @ht40: Start GO with 40 MHz channel width
5135  * @vht:  Start GO with VHT support
5136  * Returns: 0 on success, -1 on failure
5137  *
5138  * This function creates a new P2P group with the local end as the Group Owner,
5139  * i.e., without using Group Owner Negotiation.
5140  */
5141 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5142                        int freq, int ht40, int vht)
5143 {
5144         struct p2p_go_neg_results params;
5145
5146         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5147                 return -1;
5148
5149         os_free(wpa_s->global->add_psk);
5150         wpa_s->global->add_psk = NULL;
5151
5152         /* Make sure we are not running find during connection establishment */
5153         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5154         wpas_p2p_stop_find_oper(wpa_s);
5155
5156         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5157         if (freq < 0)
5158                 return -1;
5159
5160         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5161                 return -1;
5162         if (params.freq &&
5163             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5164                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5165                            "(%u MHz) is not supported for P2P uses",
5166                            params.freq);
5167                 return -1;
5168         }
5169         p2p_go_params(wpa_s->global->p2p, &params);
5170         params.persistent_group = persistent_group;
5171
5172         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5173         if (wpa_s == NULL)
5174                 return -1;
5175         wpas_start_wps_go(wpa_s, &params, 0);
5176
5177         return 0;
5178 }
5179
5180
5181 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5182                                  struct wpa_ssid *params, int addr_allocated,
5183                                  int freq)
5184 {
5185         struct wpa_ssid *ssid;
5186
5187         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5188         if (wpa_s == NULL)
5189                 return -1;
5190         wpa_s->p2p_last_4way_hs_fail = NULL;
5191
5192         wpa_supplicant_ap_deinit(wpa_s);
5193
5194         ssid = wpa_config_add_network(wpa_s->conf);
5195         if (ssid == NULL)
5196                 return -1;
5197         wpa_config_set_network_defaults(ssid);
5198         ssid->temporary = 1;
5199         ssid->proto = WPA_PROTO_RSN;
5200         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5201         ssid->group_cipher = WPA_CIPHER_CCMP;
5202         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5203         ssid->ssid = os_malloc(params->ssid_len);
5204         if (ssid->ssid == NULL) {
5205                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5206                 return -1;
5207         }
5208         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5209         ssid->ssid_len = params->ssid_len;
5210         ssid->p2p_group = 1;
5211         ssid->export_keys = 1;
5212         if (params->psk_set) {
5213                 os_memcpy(ssid->psk, params->psk, 32);
5214                 ssid->psk_set = 1;
5215         }
5216         if (params->passphrase)
5217                 ssid->passphrase = os_strdup(params->passphrase);
5218
5219         wpa_s->show_group_started = 1;
5220         wpa_s->p2p_in_invitation = 1;
5221         wpa_s->p2p_invite_go_freq = freq;
5222
5223         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5224                              NULL);
5225         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5226                                wpas_p2p_group_formation_timeout,
5227                                wpa_s->parent, NULL);
5228         wpa_supplicant_select_network(wpa_s, ssid);
5229
5230         return 0;
5231 }
5232
5233
5234 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5235                                   struct wpa_ssid *ssid, int addr_allocated,
5236                                   int force_freq, int neg_freq, int ht40,
5237                                   int vht, const struct p2p_channels *channels,
5238                                   int connection_timeout)
5239 {
5240         struct p2p_go_neg_results params;
5241         int go = 0, freq;
5242
5243         if (ssid->disabled != 2 || ssid->ssid == NULL)
5244                 return -1;
5245
5246         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5247             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5248                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5249                            "already running");
5250                 return 0;
5251         }
5252
5253         os_free(wpa_s->global->add_psk);
5254         wpa_s->global->add_psk = NULL;
5255
5256         /* Make sure we are not running find during connection establishment */
5257         wpas_p2p_stop_find_oper(wpa_s);
5258
5259         wpa_s->p2p_fallback_to_go_neg = 0;
5260
5261         if (force_freq > 0) {
5262                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5263                 if (freq < 0)
5264                         return -1;
5265         } else {
5266                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5267                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5268                         freq = 0;
5269         }
5270
5271         if (ssid->mode == WPAS_MODE_INFRA)
5272                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5273
5274         if (ssid->mode != WPAS_MODE_P2P_GO)
5275                 return -1;
5276
5277         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5278                 return -1;
5279
5280         params.role_go = 1;
5281         params.psk_set = ssid->psk_set;
5282         if (params.psk_set)
5283                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5284         if (ssid->passphrase) {
5285                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5286                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5287                                    "persistent group");
5288                         return -1;
5289                 }
5290                 os_strlcpy(params.passphrase, ssid->passphrase,
5291                            sizeof(params.passphrase));
5292         }
5293         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5294         params.ssid_len = ssid->ssid_len;
5295         params.persistent_group = 1;
5296
5297         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5298         if (wpa_s == NULL)
5299                 return -1;
5300
5301         wpa_s->p2p_first_connection_timeout = connection_timeout;
5302         wpas_start_wps_go(wpa_s, &params, 0);
5303
5304         return 0;
5305 }
5306
5307
5308 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5309                                struct wpabuf *proberesp_ies)
5310 {
5311         struct wpa_supplicant *wpa_s = ctx;
5312         if (wpa_s->ap_iface) {
5313                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5314                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5315                         wpabuf_free(beacon_ies);
5316                         wpabuf_free(proberesp_ies);
5317                         return;
5318                 }
5319                 if (beacon_ies) {
5320                         wpabuf_free(hapd->p2p_beacon_ie);
5321                         hapd->p2p_beacon_ie = beacon_ies;
5322                 }
5323                 wpabuf_free(hapd->p2p_probe_resp_ie);
5324                 hapd->p2p_probe_resp_ie = proberesp_ies;
5325         } else {
5326                 wpabuf_free(beacon_ies);
5327                 wpabuf_free(proberesp_ies);
5328         }
5329         wpa_supplicant_ap_update_beacon(wpa_s);
5330 }
5331
5332
5333 static void wpas_p2p_idle_update(void *ctx, int idle)
5334 {
5335         struct wpa_supplicant *wpa_s = ctx;
5336         if (!wpa_s->ap_iface)
5337                 return;
5338         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5339         if (idle) {
5340                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5341                     wpa_s->p2p_in_provisioning) {
5342                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5343                         return;
5344                 }
5345                 wpas_p2p_set_group_idle_timeout(wpa_s);
5346         } else
5347                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5348 }
5349
5350
5351 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5352                                        struct wpa_ssid *ssid)
5353 {
5354         struct p2p_group *group;
5355         struct p2p_group_config *cfg;
5356
5357         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5358                 return NULL;
5359
5360         cfg = os_zalloc(sizeof(*cfg));
5361         if (cfg == NULL)
5362                 return NULL;
5363
5364         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5365                 cfg->persistent_group = 2;
5366         else if (ssid->p2p_persistent_group)
5367                 cfg->persistent_group = 1;
5368         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5369         if (wpa_s->max_stations &&
5370             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5371                 cfg->max_clients = wpa_s->max_stations;
5372         else
5373                 cfg->max_clients = wpa_s->conf->max_num_sta;
5374         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5375         cfg->ssid_len = ssid->ssid_len;
5376         cfg->freq = ssid->frequency;
5377         cfg->cb_ctx = wpa_s;
5378         cfg->ie_update = wpas_p2p_ie_update;
5379         cfg->idle_update = wpas_p2p_idle_update;
5380
5381         group = p2p_group_init(wpa_s->global->p2p, cfg);
5382         if (group == NULL)
5383                 os_free(cfg);
5384         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5385                 p2p_group_notif_formation_done(group);
5386         wpa_s->p2p_group = group;
5387         return group;
5388 }
5389
5390
5391 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5392                           int registrar)
5393 {
5394         struct wpa_ssid *ssid = wpa_s->current_ssid;
5395
5396         if (!wpa_s->p2p_in_provisioning) {
5397                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5398                            "provisioning not in progress");
5399                 return;
5400         }
5401
5402         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5403                 u8 go_dev_addr[ETH_ALEN];
5404                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5405                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5406                                           ssid->ssid_len);
5407                 /* Clear any stored provisioning info */
5408                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5409         }
5410
5411         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5412                              NULL);
5413         wpa_s->p2p_go_group_formation_completed = 1;
5414         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5415                 /*
5416                  * Use a separate timeout for initial data connection to
5417                  * complete to allow the group to be removed automatically if
5418                  * something goes wrong in this step before the P2P group idle
5419                  * timeout mechanism is taken into use.
5420                  */
5421                 wpa_dbg(wpa_s, MSG_DEBUG,
5422                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5423                         P2P_MAX_INITIAL_CONN_WAIT);
5424                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5425                                        wpas_p2p_group_formation_timeout,
5426                                        wpa_s->parent, NULL);
5427         } else if (ssid) {
5428                 /*
5429                  * Use a separate timeout for initial data connection to
5430                  * complete to allow the group to be removed automatically if
5431                  * the client does not complete data connection successfully.
5432                  */
5433                 wpa_dbg(wpa_s, MSG_DEBUG,
5434                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5435                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5436                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5437                                        wpas_p2p_group_formation_timeout,
5438                                        wpa_s->parent, NULL);
5439                 /*
5440                  * Complete group formation on first successful data connection
5441                  */
5442                 wpa_s->p2p_go_group_formation_completed = 0;
5443         }
5444         if (wpa_s->global->p2p)
5445                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5446         wpas_group_formation_completed(wpa_s, 1);
5447 }
5448
5449
5450 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5451                          struct wps_event_fail *fail)
5452 {
5453         if (!wpa_s->p2p_in_provisioning) {
5454                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5455                            "provisioning not in progress");
5456                 return;
5457         }
5458
5459         if (wpa_s->go_params) {
5460                 p2p_clear_provisioning_info(
5461                         wpa_s->global->p2p,
5462                         wpa_s->go_params->peer_device_addr);
5463         }
5464
5465         wpas_notify_p2p_wps_failed(wpa_s, fail);
5466
5467         if (wpa_s == wpa_s->global->p2p_group_formation) {
5468                 /*
5469                  * Allow some time for the failed WPS negotiation exchange to
5470                  * complete, but remove the group since group formation cannot
5471                  * succeed after provisioning failure.
5472                  */
5473                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5474                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5475                 eloop_deplete_timeout(0, 50000,
5476                                       wpas_p2p_group_formation_timeout,
5477                                       wpa_s->parent, NULL);
5478         }
5479 }
5480
5481
5482 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5483 {
5484         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5485             !wpa_s->p2p_in_provisioning)
5486                 return 0;
5487
5488         wpas_p2p_grpform_fail_after_wps(wpa_s);
5489
5490         return 1;
5491 }
5492
5493
5494 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5495                        const char *config_method,
5496                        enum wpas_p2p_prov_disc_use use)
5497 {
5498         u16 config_methods;
5499
5500         wpa_s->p2p_fallback_to_go_neg = 0;
5501         wpa_s->pending_pd_use = NORMAL_PD;
5502         if (os_strncmp(config_method, "display", 7) == 0)
5503                 config_methods = WPS_CONFIG_DISPLAY;
5504         else if (os_strncmp(config_method, "keypad", 6) == 0)
5505                 config_methods = WPS_CONFIG_KEYPAD;
5506         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5507                  os_strncmp(config_method, "pushbutton", 10) == 0)
5508                 config_methods = WPS_CONFIG_PUSHBUTTON;
5509         else {
5510                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5511                 return -1;
5512         }
5513
5514         if (use == WPAS_P2P_PD_AUTO) {
5515                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5516                 wpa_s->pending_pd_config_methods = config_methods;
5517                 wpa_s->p2p_auto_pd = 1;
5518                 wpa_s->p2p_auto_join = 0;
5519                 wpa_s->pending_pd_before_join = 0;
5520                 wpa_s->auto_pd_scan_retry = 0;
5521                 wpas_p2p_stop_find(wpa_s);
5522                 wpa_s->p2p_join_scan_count = 0;
5523                 os_get_reltime(&wpa_s->p2p_auto_started);
5524                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5525                            wpa_s->p2p_auto_started.sec,
5526                            wpa_s->p2p_auto_started.usec);
5527                 wpas_p2p_join_scan(wpa_s, NULL);
5528                 return 0;
5529         }
5530
5531         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5532                 return -1;
5533
5534         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5535                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5536                                  0, 1);
5537 }
5538
5539
5540 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5541                               char *end)
5542 {
5543         return p2p_scan_result_text(ies, ies_len, buf, end);
5544 }
5545
5546
5547 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5548 {
5549         if (!offchannel_pending_action_tx(wpa_s))
5550                 return;
5551
5552         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5553                    "operation request");
5554         offchannel_clear_pending_action_tx(wpa_s);
5555 }
5556
5557
5558 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5559                   enum p2p_discovery_type type,
5560                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5561                   const u8 *dev_id, unsigned int search_delay)
5562 {
5563         wpas_p2p_clear_pending_action_tx(wpa_s);
5564         wpa_s->p2p_long_listen = 0;
5565
5566         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5567             wpa_s->p2p_in_provisioning)
5568                 return -1;
5569
5570         wpa_supplicant_cancel_sched_scan(wpa_s);
5571
5572         return p2p_find(wpa_s->global->p2p, timeout, type,
5573                         num_req_dev_types, req_dev_types, dev_id,
5574                         search_delay);
5575 }
5576
5577
5578 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5579 {
5580         wpas_p2p_clear_pending_action_tx(wpa_s);
5581         wpa_s->p2p_long_listen = 0;
5582         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5583         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5584
5585         if (wpa_s->global->p2p)
5586                 p2p_stop_find(wpa_s->global->p2p);
5587
5588         return 0;
5589 }
5590
5591
5592 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5593 {
5594         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5595                 return;
5596         wpas_p2p_remove_pending_group_interface(wpa_s);
5597 }
5598
5599
5600 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5601 {
5602         struct wpa_supplicant *wpa_s = eloop_ctx;
5603         wpa_s->p2p_long_listen = 0;
5604 }
5605
5606
5607 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5608 {
5609         int res;
5610
5611         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5612                 return -1;
5613
5614         wpa_supplicant_cancel_sched_scan(wpa_s);
5615         wpas_p2p_clear_pending_action_tx(wpa_s);
5616
5617         if (timeout == 0) {
5618                 /*
5619                  * This is a request for unlimited Listen state. However, at
5620                  * least for now, this is mapped to a Listen state for one
5621                  * hour.
5622                  */
5623                 timeout = 3600;
5624         }
5625         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5626         wpa_s->p2p_long_listen = 0;
5627
5628         /*
5629          * Stop previous find/listen operation to avoid trying to request a new
5630          * remain-on-channel operation while the driver is still running the
5631          * previous one.
5632          */
5633         if (wpa_s->global->p2p)
5634                 p2p_stop_find(wpa_s->global->p2p);
5635
5636         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5637         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5638                 wpa_s->p2p_long_listen = timeout * 1000;
5639                 eloop_register_timeout(timeout, 0,
5640                                        wpas_p2p_long_listen_timeout,
5641                                        wpa_s, NULL);
5642         }
5643
5644         return res;
5645 }
5646
5647
5648 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5649                           u8 *buf, size_t len, int p2p_group)
5650 {
5651         struct wpabuf *p2p_ie;
5652         int ret;
5653
5654         if (wpa_s->global->p2p_disabled)
5655                 return -1;
5656         if (wpa_s->global->p2p == NULL)
5657                 return -1;
5658         if (bss == NULL)
5659                 return -1;
5660
5661         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5662         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5663                                p2p_group, p2p_ie);
5664         wpabuf_free(p2p_ie);
5665
5666         return ret;
5667 }
5668
5669
5670 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5671                           const u8 *dst, const u8 *bssid,
5672                           const u8 *ie, size_t ie_len, int ssi_signal)
5673 {
5674         if (wpa_s->global->p2p_disabled)
5675                 return 0;
5676         if (wpa_s->global->p2p == NULL)
5677                 return 0;
5678
5679         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5680                                  ie, ie_len)) {
5681         case P2P_PREQ_NOT_P2P:
5682                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5683                                  ssi_signal);
5684                 /* fall through */
5685         case P2P_PREQ_MALFORMED:
5686         case P2P_PREQ_NOT_LISTEN:
5687         case P2P_PREQ_NOT_PROCESSED:
5688         default: /* make gcc happy */
5689                 return 0;
5690         case P2P_PREQ_PROCESSED:
5691                 return 1;
5692         }
5693 }
5694
5695
5696 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5697                         const u8 *sa, const u8 *bssid,
5698                         u8 category, const u8 *data, size_t len, int freq)
5699 {
5700         if (wpa_s->global->p2p_disabled)
5701                 return;
5702         if (wpa_s->global->p2p == NULL)
5703                 return;
5704
5705         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5706                       freq);
5707 }
5708
5709
5710 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5711 {
5712         if (wpa_s->global->p2p_disabled)
5713                 return;
5714         if (wpa_s->global->p2p == NULL)
5715                 return;
5716
5717         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5718 }
5719
5720
5721 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5722 {
5723         p2p_group_deinit(wpa_s->p2p_group);
5724         wpa_s->p2p_group = NULL;
5725
5726         wpa_s->ap_configured_cb = NULL;
5727         wpa_s->ap_configured_cb_ctx = NULL;
5728         wpa_s->ap_configured_cb_data = NULL;
5729         wpa_s->connect_without_scan = NULL;
5730 }
5731
5732
5733 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5734 {
5735         wpa_s->p2p_long_listen = 0;
5736
5737         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5738                 return -1;
5739
5740         return p2p_reject(wpa_s->global->p2p, addr);
5741 }
5742
5743
5744 /* Invite to reinvoke a persistent group */
5745 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5746                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5747                     int ht40, int vht, int pref_freq)
5748 {
5749         enum p2p_invite_role role;
5750         u8 *bssid = NULL;
5751         int force_freq = 0;
5752         int res;
5753         int no_pref_freq_given = pref_freq == 0;
5754
5755         wpa_s->global->p2p_invite_group = NULL;
5756         if (peer_addr)
5757                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5758         else
5759                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5760
5761         wpa_s->p2p_persistent_go_freq = freq;
5762         wpa_s->p2p_go_ht40 = !!ht40;
5763         if (ssid->mode == WPAS_MODE_P2P_GO) {
5764                 role = P2P_INVITE_ROLE_GO;
5765                 if (peer_addr == NULL) {
5766                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5767                                    "address in invitation command");
5768                         return -1;
5769                 }
5770                 if (wpas_p2p_create_iface(wpa_s)) {
5771                         if (wpas_p2p_add_group_interface(wpa_s,
5772                                                          WPA_IF_P2P_GO) < 0) {
5773                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5774                                            "allocate a new interface for the "
5775                                            "group");
5776                                 return -1;
5777                         }
5778                         bssid = wpa_s->pending_interface_addr;
5779                 } else
5780                         bssid = wpa_s->own_addr;
5781         } else {
5782                 role = P2P_INVITE_ROLE_CLIENT;
5783                 peer_addr = ssid->bssid;
5784         }
5785         wpa_s->pending_invite_ssid_id = ssid->id;
5786
5787         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5788                                    role == P2P_INVITE_ROLE_GO);
5789         if (res)
5790                 return res;
5791
5792         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5793                 return -1;
5794
5795         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5796             no_pref_freq_given && pref_freq > 0 &&
5797             wpa_s->num_multichan_concurrent > 1 &&
5798             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5799                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5800                            pref_freq);
5801                 pref_freq = 0;
5802         }
5803
5804         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5805                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5806                           1, pref_freq, -1);
5807 }
5808
5809
5810 /* Invite to join an active group */
5811 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5812                           const u8 *peer_addr, const u8 *go_dev_addr)
5813 {
5814         struct wpa_global *global = wpa_s->global;
5815         enum p2p_invite_role role;
5816         u8 *bssid = NULL;
5817         struct wpa_ssid *ssid;
5818         int persistent;
5819         int freq = 0, force_freq = 0, pref_freq = 0;
5820         int res;
5821
5822         wpa_s->p2p_persistent_go_freq = 0;
5823         wpa_s->p2p_go_ht40 = 0;
5824         wpa_s->p2p_go_vht = 0;
5825
5826         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5827                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5828                         break;
5829         }
5830         if (wpa_s == NULL) {
5831                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5832                 return -1;
5833         }
5834
5835         ssid = wpa_s->current_ssid;
5836         if (ssid == NULL) {
5837                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5838                            "invitation");
5839                 return -1;
5840         }
5841
5842         wpa_s->global->p2p_invite_group = wpa_s;
5843         persistent = ssid->p2p_persistent_group &&
5844                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5845                                         ssid->ssid, ssid->ssid_len);
5846
5847         if (ssid->mode == WPAS_MODE_P2P_GO) {
5848                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5849                 bssid = wpa_s->own_addr;
5850                 if (go_dev_addr == NULL)
5851                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5852                 freq = ssid->frequency;
5853         } else {
5854                 role = P2P_INVITE_ROLE_CLIENT;
5855                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5856                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5857                                    "invite to current group");
5858                         return -1;
5859                 }
5860                 bssid = wpa_s->bssid;
5861                 if (go_dev_addr == NULL &&
5862                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5863                         go_dev_addr = wpa_s->go_dev_addr;
5864                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5865                         (int) wpa_s->assoc_freq;
5866         }
5867         wpa_s->parent->pending_invite_ssid_id = -1;
5868
5869         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5870                 return -1;
5871
5872         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5873                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5874         if (res)
5875                 return res;
5876         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5877
5878         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5879                           ssid->ssid, ssid->ssid_len, force_freq,
5880                           go_dev_addr, persistent, pref_freq, -1);
5881 }
5882
5883
5884 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5885 {
5886         struct wpa_ssid *ssid = wpa_s->current_ssid;
5887         const char *ssid_txt;
5888         u8 go_dev_addr[ETH_ALEN];
5889         int network_id = -1;
5890         int persistent;
5891         int freq;
5892         u8 ip[3 * 4];
5893         char ip_addr[100];
5894
5895         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5896                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5897                                      wpa_s->parent, NULL);
5898         }
5899
5900         if (!wpa_s->show_group_started || !ssid)
5901                 return;
5902
5903         wpa_s->show_group_started = 0;
5904
5905         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5906         os_memset(go_dev_addr, 0, ETH_ALEN);
5907         if (ssid->bssid_set)
5908                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5909         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5910                                                ssid->ssid_len);
5911         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5912
5913         if (wpa_s->global->p2p_group_formation == wpa_s)
5914                 wpa_s->global->p2p_group_formation = NULL;
5915
5916         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5917                 (int) wpa_s->assoc_freq;
5918
5919         ip_addr[0] = '\0';
5920         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5921                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5922                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5923                             ip[0], ip[1], ip[2], ip[3],
5924                             ip[4], ip[5], ip[6], ip[7],
5925                             ip[8], ip[9], ip[10], ip[11]);
5926         }
5927
5928         if (ssid->passphrase == NULL && ssid->psk_set) {
5929                 char psk[65];
5930                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5931                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5932                                "%s client ssid=\"%s\" freq=%d psk=%s "
5933                                "go_dev_addr=" MACSTR "%s%s",
5934                                wpa_s->ifname, ssid_txt, freq, psk,
5935                                MAC2STR(go_dev_addr),
5936                                persistent ? " [PERSISTENT]" : "", ip_addr);
5937         } else {
5938                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5939                                "%s client ssid=\"%s\" freq=%d "
5940                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5941                                wpa_s->ifname, ssid_txt, freq,
5942                                ssid->passphrase ? ssid->passphrase : "",
5943                                MAC2STR(go_dev_addr),
5944                                persistent ? " [PERSISTENT]" : "", ip_addr);
5945         }
5946
5947         if (persistent)
5948                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5949                                                              ssid, go_dev_addr);
5950         if (network_id < 0)
5951                 network_id = ssid->id;
5952         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5953 }
5954
5955
5956 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5957                           u32 interval1, u32 duration2, u32 interval2)
5958 {
5959         int ret;
5960
5961         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5962                 return -1;
5963
5964         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5965             wpa_s->current_ssid == NULL ||
5966             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5967                 return -1;
5968
5969         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5970                                wpa_s->own_addr, wpa_s->assoc_freq,
5971                                duration1, interval1, duration2, interval2);
5972         if (ret == 0)
5973                 wpa_s->waiting_presence_resp = 1;
5974
5975         return ret;
5976 }
5977
5978
5979 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5980                         unsigned int interval)
5981 {
5982         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5983                 return -1;
5984
5985         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5986 }
5987
5988
5989 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5990 {
5991         if (wpa_s->current_ssid == NULL) {
5992                 /*
5993                  * current_ssid can be cleared when P2P client interface gets
5994                  * disconnected, so assume this interface was used as P2P
5995                  * client.
5996                  */
5997                 return 1;
5998         }
5999         return wpa_s->current_ssid->p2p_group &&
6000                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6001 }
6002
6003
6004 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6005 {
6006         struct wpa_supplicant *wpa_s = eloop_ctx;
6007
6008         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6009                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6010                            "disabled");
6011                 return;
6012         }
6013
6014         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6015                    "group");
6016         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6017 }
6018
6019
6020 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6021 {
6022         int timeout;
6023
6024         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6025                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6026
6027         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6028                 return;
6029
6030         timeout = wpa_s->conf->p2p_group_idle;
6031         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6032             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6033             timeout = P2P_MAX_CLIENT_IDLE;
6034
6035         if (timeout == 0)
6036                 return;
6037
6038         if (timeout < 0) {
6039                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6040                         timeout = 0; /* special client mode no-timeout */
6041                 else
6042                         return;
6043         }
6044
6045         if (wpa_s->p2p_in_provisioning) {
6046                 /*
6047                  * Use the normal group formation timeout during the
6048                  * provisioning phase to avoid terminating this process too
6049                  * early due to group idle timeout.
6050                  */
6051                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6052                            "during provisioning");
6053                 return;
6054         }
6055
6056         if (wpa_s->show_group_started) {
6057                 /*
6058                  * Use the normal group formation timeout between the end of
6059                  * the provisioning phase and completion of 4-way handshake to
6060                  * avoid terminating this process too early due to group idle
6061                  * timeout.
6062                  */
6063                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6064                            "while waiting for initial 4-way handshake to "
6065                            "complete");
6066                 return;
6067         }
6068
6069         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6070                    timeout);
6071         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6072                                wpa_s, NULL);
6073 }
6074
6075
6076 /* Returns 1 if the interface was removed */
6077 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6078                           u16 reason_code, const u8 *ie, size_t ie_len,
6079                           int locally_generated)
6080 {
6081         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6082                 return 0;
6083
6084         if (!locally_generated)
6085                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6086                                  ie_len);
6087
6088         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6089             wpa_s->current_ssid &&
6090             wpa_s->current_ssid->p2p_group &&
6091             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6092                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6093                            "session is ending");
6094                 if (wpas_p2p_group_delete(wpa_s,
6095                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6096                     > 0)
6097                         return 1;
6098         }
6099
6100         return 0;
6101 }
6102
6103
6104 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6105                              u16 reason_code, const u8 *ie, size_t ie_len,
6106                              int locally_generated)
6107 {
6108         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6109                 return;
6110
6111         if (!locally_generated)
6112                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6113                                    ie_len);
6114 }
6115
6116
6117 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6118 {
6119         struct p2p_data *p2p = wpa_s->global->p2p;
6120
6121         if (p2p == NULL)
6122                 return;
6123
6124         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6125                 return;
6126
6127         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6128                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6129
6130         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6131                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6132
6133         if (wpa_s->wps &&
6134             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6135                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6136
6137         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6138                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6139
6140         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6141                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6142                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6143                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6144                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6145         }
6146
6147         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6148                 p2p_set_sec_dev_types(p2p,
6149                                       (void *) wpa_s->conf->sec_device_type,
6150                                       wpa_s->conf->num_sec_device_types);
6151
6152         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6153                 int i;
6154                 p2p_remove_wps_vendor_extensions(p2p);
6155                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6156                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6157                                 continue;
6158                         p2p_add_wps_vendor_extension(
6159                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6160                 }
6161         }
6162
6163         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6164             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6165                 char country[3];
6166                 country[0] = wpa_s->conf->country[0];
6167                 country[1] = wpa_s->conf->country[1];
6168                 country[2] = 0x04;
6169                 p2p_set_country(p2p, country);
6170         }
6171
6172         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6173                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6174                                      wpa_s->conf->p2p_ssid_postfix ?
6175                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6176                                      0);
6177         }
6178
6179         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6180                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6181
6182         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6183                 u8 reg_class, channel;
6184                 int ret;
6185                 unsigned int r;
6186                 if (wpa_s->conf->p2p_listen_reg_class &&
6187                     wpa_s->conf->p2p_listen_channel) {
6188                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6189                         channel = wpa_s->conf->p2p_listen_channel;
6190                 } else {
6191                         reg_class = 81;
6192                         /*
6193                          * Pick one of the social channels randomly as the
6194                          * listen channel.
6195                          */
6196                         os_get_random((u8 *) &r, sizeof(r));
6197                         channel = 1 + (r % 3) * 5;
6198                 }
6199                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6200                 if (ret)
6201                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6202                                    "failed: %d", ret);
6203         }
6204         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6205                 u8 op_reg_class, op_channel, cfg_op_channel;
6206                 int ret = 0;
6207                 unsigned int r;
6208                 if (wpa_s->conf->p2p_oper_reg_class &&
6209                     wpa_s->conf->p2p_oper_channel) {
6210                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6211                         op_channel = wpa_s->conf->p2p_oper_channel;
6212                         cfg_op_channel = 1;
6213                 } else {
6214                         op_reg_class = 81;
6215                         /*
6216                          * Use random operation channel from (1, 6, 11)
6217                          *if no other preference is indicated.
6218                          */
6219                         os_get_random((u8 *) &r, sizeof(r));
6220                         op_channel = 1 + (r % 3) * 5;
6221                         cfg_op_channel = 0;
6222                 }
6223                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6224                                            cfg_op_channel);
6225                 if (ret)
6226                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6227                                    "failed: %d", ret);
6228         }
6229
6230         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6231                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6232                                       wpa_s->conf->p2p_pref_chan) < 0) {
6233                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6234                                    "update failed");
6235                 }
6236
6237                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6238                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6239                                    "update failed");
6240                 }
6241         }
6242 }
6243
6244
6245 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6246                      int duration)
6247 {
6248         if (!wpa_s->ap_iface)
6249                 return -1;
6250         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6251                                    duration);
6252 }
6253
6254
6255 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6256 {
6257         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6258                 return -1;
6259
6260         wpa_s->global->cross_connection = enabled;
6261         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6262
6263         if (!enabled) {
6264                 struct wpa_supplicant *iface;
6265
6266                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6267                 {
6268                         if (iface->cross_connect_enabled == 0)
6269                                 continue;
6270
6271                         iface->cross_connect_enabled = 0;
6272                         iface->cross_connect_in_use = 0;
6273                         wpa_msg_global(iface->parent, MSG_INFO,
6274                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6275                                        iface->ifname,
6276                                        iface->cross_connect_uplink);
6277                 }
6278         }
6279
6280         return 0;
6281 }
6282
6283
6284 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6285 {
6286         struct wpa_supplicant *iface;
6287
6288         if (!uplink->global->cross_connection)
6289                 return;
6290
6291         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6292                 if (!iface->cross_connect_enabled)
6293                         continue;
6294                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6295                     0)
6296                         continue;
6297                 if (iface->ap_iface == NULL)
6298                         continue;
6299                 if (iface->cross_connect_in_use)
6300                         continue;
6301
6302                 iface->cross_connect_in_use = 1;
6303                 wpa_msg_global(iface->parent, MSG_INFO,
6304                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6305                                iface->ifname, iface->cross_connect_uplink);
6306         }
6307 }
6308
6309
6310 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6311 {
6312         struct wpa_supplicant *iface;
6313
6314         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6315                 if (!iface->cross_connect_enabled)
6316                         continue;
6317                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6318                     0)
6319                         continue;
6320                 if (!iface->cross_connect_in_use)
6321                         continue;
6322
6323                 wpa_msg_global(iface->parent, MSG_INFO,
6324                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6325                                iface->ifname, iface->cross_connect_uplink);
6326                 iface->cross_connect_in_use = 0;
6327         }
6328 }
6329
6330
6331 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6332 {
6333         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6334             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6335             wpa_s->cross_connect_disallowed)
6336                 wpas_p2p_disable_cross_connect(wpa_s);
6337         else
6338                 wpas_p2p_enable_cross_connect(wpa_s);
6339         if (!wpa_s->ap_iface &&
6340             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6341                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6342 }
6343
6344
6345 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6346 {
6347         wpas_p2p_disable_cross_connect(wpa_s);
6348         if (!wpa_s->ap_iface &&
6349             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6350                                          wpa_s, NULL))
6351                 wpas_p2p_set_group_idle_timeout(wpa_s);
6352 }
6353
6354
6355 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6356 {
6357         struct wpa_supplicant *iface;
6358
6359         if (!wpa_s->global->cross_connection)
6360                 return;
6361
6362         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6363                 if (iface == wpa_s)
6364                         continue;
6365                 if (iface->drv_flags &
6366                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6367                         continue;
6368                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6369                         continue;
6370
6371                 wpa_s->cross_connect_enabled = 1;
6372                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6373                            sizeof(wpa_s->cross_connect_uplink));
6374                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6375                            "%s to %s whenever uplink is available",
6376                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6377
6378                 if (iface->ap_iface || iface->current_ssid == NULL ||
6379                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6380                     iface->cross_connect_disallowed ||
6381                     iface->wpa_state != WPA_COMPLETED)
6382                         break;
6383
6384                 wpa_s->cross_connect_in_use = 1;
6385                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6386                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6387                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6388                 break;
6389         }
6390 }
6391
6392
6393 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6394 {
6395         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6396             !wpa_s->p2p_in_provisioning)
6397                 return 0; /* not P2P client operation */
6398
6399         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6400                    "session overlap");
6401         if (wpa_s != wpa_s->parent)
6402                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6403         wpas_p2p_group_formation_failed(wpa_s);
6404         return 1;
6405 }
6406
6407
6408 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6409 {
6410         struct wpa_supplicant *wpa_s = eloop_ctx;
6411         wpas_p2p_notif_pbc_overlap(wpa_s);
6412 }
6413
6414
6415 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6416 {
6417         struct p2p_channels chan, cli_chan;
6418         struct wpa_supplicant *ifs;
6419
6420         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6421                 return;
6422
6423         os_memset(&chan, 0, sizeof(chan));
6424         os_memset(&cli_chan, 0, sizeof(cli_chan));
6425         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6426                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6427                            "channel list");
6428                 return;
6429         }
6430
6431         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6432
6433         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6434                 int freq;
6435                 if (!ifs->current_ssid ||
6436                     !ifs->current_ssid->p2p_group ||
6437                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6438                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6439                                 continue;
6440                 freq = ifs->current_ssid->frequency;
6441                 if (freq_included(&chan, freq)) {
6442                         wpa_dbg(ifs, MSG_DEBUG,
6443                                 "P2P GO operating frequency %d MHz in valid range",
6444                                 freq);
6445                         continue;
6446                 }
6447
6448                 wpa_dbg(ifs, MSG_DEBUG,
6449                         "P2P GO operating in invalid frequency %d MHz", freq);
6450                 /* TODO: Consider using CSA or removing the group within
6451                  * wpa_supplicant */
6452                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6453         }
6454 }
6455
6456
6457 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6458                                      struct wpa_scan_results *scan_res)
6459 {
6460         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6461 }
6462
6463
6464 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6465 {
6466         struct wpa_global *global = wpa_s->global;
6467         int found = 0;
6468         const u8 *peer;
6469
6470         if (global->p2p == NULL)
6471                 return -1;
6472
6473         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6474
6475         if (wpa_s->pending_interface_name[0] &&
6476             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6477                 found = 1;
6478
6479         peer = p2p_get_go_neg_peer(global->p2p);
6480         if (peer) {
6481                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6482                            MACSTR, MAC2STR(peer));
6483                 p2p_unauthorize(global->p2p, peer);
6484                 found = 1;
6485         }
6486
6487         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6488                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6489                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6490                 found = 1;
6491         }
6492
6493         if (wpa_s->pending_pd_before_join) {
6494                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6495                 wpa_s->pending_pd_before_join = 0;
6496                 found = 1;
6497         }
6498
6499         wpas_p2p_stop_find(wpa_s);
6500
6501         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6502                 if (wpa_s == global->p2p_group_formation &&
6503                     (wpa_s->p2p_in_provisioning ||
6504                      wpa_s->parent->pending_interface_type ==
6505                      WPA_IF_P2P_CLIENT)) {
6506                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6507                                    "formation found - cancelling",
6508                                    wpa_s->ifname);
6509                         found = 1;
6510                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6511                                              wpa_s->parent, NULL);
6512                         if (wpa_s->p2p_in_provisioning) {
6513                                 wpas_group_formation_completed(wpa_s, 0);
6514                                 break;
6515                         }
6516                         wpas_p2p_group_delete(wpa_s,
6517                                               P2P_GROUP_REMOVAL_REQUESTED);
6518                         break;
6519                 } else if (wpa_s->p2p_in_invitation) {
6520                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6521                                    wpa_s->ifname);
6522                         found = 1;
6523                         wpas_p2p_group_formation_failed(wpa_s);
6524                 }
6525         }
6526
6527         if (!found) {
6528                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6529                 return -1;
6530         }
6531
6532         return 0;
6533 }
6534
6535
6536 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6537 {
6538         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6539                 return;
6540
6541         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6542                    "being available anymore");
6543         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6544 }
6545
6546
6547 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6548                                    int freq_24, int freq_5, int freq_overall)
6549 {
6550         struct p2p_data *p2p = wpa_s->global->p2p;
6551         if (p2p == NULL)
6552                 return;
6553         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6554 }
6555
6556
6557 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6558 {
6559         u8 peer[ETH_ALEN];
6560         struct p2p_data *p2p = wpa_s->global->p2p;
6561
6562         if (p2p == NULL)
6563                 return -1;
6564
6565         if (hwaddr_aton(addr, peer))
6566                 return -1;
6567
6568         return p2p_unauthorize(p2p, peer);
6569 }
6570
6571
6572 /**
6573  * wpas_p2p_disconnect - Disconnect from a P2P Group
6574  * @wpa_s: Pointer to wpa_supplicant data
6575  * Returns: 0 on success, -1 on failure
6576  *
6577  * This can be used to disconnect from a group in which the local end is a P2P
6578  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6579  * virtual network interface was created for this group, that interface will be
6580  * removed. Otherwise, only the configured P2P group network will be removed
6581  * from the interface.
6582  */
6583 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6584 {
6585
6586         if (wpa_s == NULL)
6587                 return -1;
6588
6589         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6590                 -1 : 0;
6591 }
6592
6593
6594 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6595 {
6596         int ret;
6597
6598         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6599                 return 0;
6600
6601         ret = p2p_in_progress(wpa_s->global->p2p);
6602         if (ret == 0) {
6603                 /*
6604                  * Check whether there is an ongoing WPS provisioning step (or
6605                  * other parts of group formation) on another interface since
6606                  * p2p_in_progress() does not report this to avoid issues for
6607                  * scans during such provisioning step.
6608                  */
6609                 if (wpa_s->global->p2p_group_formation &&
6610                     wpa_s->global->p2p_group_formation != wpa_s) {
6611                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6612                                 "in group formation",
6613                                 wpa_s->global->p2p_group_formation->ifname);
6614                         ret = 1;
6615                 }
6616         }
6617
6618         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6619                 struct os_reltime now;
6620                 os_get_reltime(&now);
6621                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6622                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6623                         /* Wait for the first client has expired */
6624                         wpa_s->global->p2p_go_wait_client.sec = 0;
6625                 } else {
6626                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6627                         ret = 1;
6628                 }
6629         }
6630
6631         return ret;
6632 }
6633
6634
6635 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6636                               struct wpa_ssid *ssid)
6637 {
6638         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6639             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6640                                  wpa_s->parent, NULL) > 0) {
6641                 /**
6642                  * Remove the network by scheduling the group formation
6643                  * timeout to happen immediately. The teardown code
6644                  * needs to be scheduled to run asynch later so that we
6645                  * don't delete data from under ourselves unexpectedly.
6646                  * Calling wpas_p2p_group_formation_timeout directly
6647                  * causes a series of crashes in WPS failure scenarios.
6648                  */
6649                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6650                            "P2P group network getting removed");
6651                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6652                                        wpa_s->parent, NULL);
6653         }
6654 }
6655
6656
6657 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6658                                           const u8 *addr, const u8 *ssid,
6659                                           size_t ssid_len)
6660 {
6661         struct wpa_ssid *s;
6662         size_t i;
6663
6664         for (s = wpa_s->conf->ssid; s; s = s->next) {
6665                 if (s->disabled != 2)
6666                         continue;
6667                 if (ssid &&
6668                     (ssid_len != s->ssid_len ||
6669                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6670                         continue;
6671                 if (addr == NULL) {
6672                         if (s->mode == WPAS_MODE_P2P_GO)
6673                                 return s;
6674                         continue;
6675                 }
6676                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6677                         return s; /* peer is GO in the persistent group */
6678                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6679                         continue;
6680                 for (i = 0; i < s->num_p2p_clients; i++) {
6681                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6682                                       addr, ETH_ALEN) == 0)
6683                                 return s; /* peer is P2P client in persistent
6684                                            * group */
6685                 }
6686         }
6687
6688         return NULL;
6689 }
6690
6691
6692 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6693                                        const u8 *addr)
6694 {
6695         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6696                                  wpa_s->parent, NULL) > 0) {
6697                 /*
6698                  * This can happen if WPS provisioning step is not terminated
6699                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6700                  * peer was able to connect, there is no need to time out group
6701                  * formation after this, though. In addition, this is used with
6702                  * the initial connection wait on the GO as a separate formation
6703                  * timeout and as such, expected to be hit after the initial WPS
6704                  * provisioning step.
6705                  */
6706                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6707         }
6708         if (!wpa_s->p2p_go_group_formation_completed) {
6709                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6710                 wpa_s->p2p_go_group_formation_completed = 1;
6711                 wpa_s->global->p2p_group_formation = NULL;
6712                 wpa_s->p2p_in_provisioning = 0;
6713                 wpa_s->p2p_in_invitation = 0;
6714         }
6715         wpa_s->global->p2p_go_wait_client.sec = 0;
6716         if (addr == NULL)
6717                 return;
6718         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6719 }
6720
6721
6722 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6723                                         int group_added)
6724 {
6725         struct wpa_supplicant *group = wpa_s;
6726         if (wpa_s->global->p2p_group_formation)
6727                 group = wpa_s->global->p2p_group_formation;
6728         wpa_s = wpa_s->parent;
6729         offchannel_send_action_done(wpa_s);
6730         if (group_added)
6731                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6732         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6733         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6734                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6735                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6736                          wpa_s->p2p_persistent_id,
6737                          wpa_s->p2p_pd_before_go_neg,
6738                          wpa_s->p2p_go_ht40,
6739                          wpa_s->p2p_go_vht);
6740 }
6741
6742
6743 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6744 {
6745         if (!wpa_s->p2p_fallback_to_go_neg ||
6746             wpa_s->p2p_in_provisioning <= 5)
6747                 return 0;
6748
6749         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6750                 return 0; /* peer operating as a GO */
6751
6752         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6753                 "fallback to GO Negotiation");
6754         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6755
6756         return 1;
6757 }
6758
6759
6760 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6761 {
6762         struct wpa_supplicant *ifs;
6763
6764         if (wpa_s->wpa_state > WPA_SCANNING) {
6765                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6766                         "concurrent operation",
6767                         P2P_CONCURRENT_SEARCH_DELAY);
6768                 return P2P_CONCURRENT_SEARCH_DELAY;
6769         }
6770
6771         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6772                          radio_list) {
6773                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6774                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6775                                 "delay due to concurrent operation on "
6776                                 "interface %s",
6777                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6778                         return P2P_CONCURRENT_SEARCH_DELAY;
6779                 }
6780         }
6781
6782         return 0;
6783 }
6784
6785
6786 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6787                                      struct wpa_ssid *s, const u8 *addr,
6788                                      int iface_addr)
6789 {
6790         struct psk_list_entry *psk, *tmp;
6791         int changed = 0;
6792
6793         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6794                               list) {
6795                 if ((iface_addr && !psk->p2p &&
6796                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6797                     (!iface_addr && psk->p2p &&
6798                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6799                         wpa_dbg(wpa_s, MSG_DEBUG,
6800                                 "P2P: Remove persistent group PSK list entry for "
6801                                 MACSTR " p2p=%u",
6802                                 MAC2STR(psk->addr), psk->p2p);
6803                         dl_list_del(&psk->list);
6804                         os_free(psk);
6805                         changed++;
6806                 }
6807         }
6808
6809         return changed;
6810 }
6811
6812
6813 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6814                          const u8 *p2p_dev_addr,
6815                          const u8 *psk, size_t psk_len)
6816 {
6817         struct wpa_ssid *ssid = wpa_s->current_ssid;
6818         struct wpa_ssid *persistent;
6819         struct psk_list_entry *p, *last;
6820
6821         if (psk_len != sizeof(p->psk))
6822                 return;
6823
6824         if (p2p_dev_addr) {
6825                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6826                         " p2p_dev_addr=" MACSTR,
6827                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6828                 if (is_zero_ether_addr(p2p_dev_addr))
6829                         p2p_dev_addr = NULL;
6830         } else {
6831                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6832                         MAC2STR(mac_addr));
6833         }
6834
6835         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6836                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6837                 /* To be added to persistent group once created */
6838                 if (wpa_s->global->add_psk == NULL) {
6839                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6840                         if (wpa_s->global->add_psk == NULL)
6841                                 return;
6842                 }
6843                 p = wpa_s->global->add_psk;
6844                 if (p2p_dev_addr) {
6845                         p->p2p = 1;
6846                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6847                 } else {
6848                         p->p2p = 0;
6849                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6850                 }
6851                 os_memcpy(p->psk, psk, psk_len);
6852                 return;
6853         }
6854
6855         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6856                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6857                 return;
6858         }
6859
6860         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6861                                              ssid->ssid_len);
6862         if (!persistent) {
6863                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6864                 return;
6865         }
6866
6867         p = os_zalloc(sizeof(*p));
6868         if (p == NULL)
6869                 return;
6870         if (p2p_dev_addr) {
6871                 p->p2p = 1;
6872                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6873         } else {
6874                 p->p2p = 0;
6875                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6876         }
6877         os_memcpy(p->psk, psk, psk_len);
6878
6879         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
6880             (last = dl_list_last(&persistent->psk_list,
6881                                  struct psk_list_entry, list))) {
6882                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6883                         MACSTR " (p2p=%u) to make room for a new one",
6884                         MAC2STR(last->addr), last->p2p);
6885                 dl_list_del(&last->list);
6886                 os_free(last);
6887         }
6888
6889         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6890                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6891                                   p2p_dev_addr == NULL);
6892         if (p2p_dev_addr) {
6893                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6894                         MACSTR, MAC2STR(p2p_dev_addr));
6895         } else {
6896                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6897                         MAC2STR(mac_addr));
6898         }
6899         dl_list_add(&persistent->psk_list, &p->list);
6900
6901         if (wpa_s->parent->conf->update_config &&
6902             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6903                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6904 }
6905
6906
6907 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6908                                 struct wpa_ssid *s, const u8 *addr,
6909                                 int iface_addr)
6910 {
6911         int res;
6912
6913         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6914         if (res > 0 && wpa_s->conf->update_config &&
6915             wpa_config_write(wpa_s->confname, wpa_s->conf))
6916                 wpa_dbg(wpa_s, MSG_DEBUG,
6917                         "P2P: Failed to update configuration");
6918 }
6919
6920
6921 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6922                                       const u8 *peer, int iface_addr)
6923 {
6924         struct hostapd_data *hapd;
6925         struct hostapd_wpa_psk *psk, *prev, *rem;
6926         struct sta_info *sta;
6927
6928         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6929             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6930                 return;
6931
6932         /* Remove per-station PSK entry */
6933         hapd = wpa_s->ap_iface->bss[0];
6934         prev = NULL;
6935         psk = hapd->conf->ssid.wpa_psk;
6936         while (psk) {
6937                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6938                     (!iface_addr &&
6939                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6940                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6941                                 MACSTR " iface_addr=%d",
6942                                 MAC2STR(peer), iface_addr);
6943                         if (prev)
6944                                 prev->next = psk->next;
6945                         else
6946                                 hapd->conf->ssid.wpa_psk = psk->next;
6947                         rem = psk;
6948                         psk = psk->next;
6949                         os_free(rem);
6950                 } else {
6951                         prev = psk;
6952                         psk = psk->next;
6953                 }
6954         }
6955
6956         /* Disconnect from group */
6957         if (iface_addr)
6958                 sta = ap_get_sta(hapd, peer);
6959         else
6960                 sta = ap_get_sta_p2p(hapd, peer);
6961         if (sta) {
6962                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6963                         " (iface_addr=%d) from group",
6964                         MAC2STR(peer), iface_addr);
6965                 hostapd_drv_sta_deauth(hapd, sta->addr,
6966                                        WLAN_REASON_DEAUTH_LEAVING);
6967                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6968         }
6969 }
6970
6971
6972 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6973                             int iface_addr)
6974 {
6975         struct wpa_ssid *s;
6976         struct wpa_supplicant *w;
6977
6978         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6979
6980         /* Remove from any persistent group */
6981         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6982                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6983                         continue;
6984                 if (!iface_addr)
6985                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6986                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6987         }
6988
6989         /* Remove from any operating group */
6990         for (w = wpa_s->global->ifaces; w; w = w->next)
6991                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6992 }
6993
6994
6995 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6996 {
6997         struct wpa_supplicant *wpa_s = eloop_ctx;
6998         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6999 }
7000
7001
7002 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7003 {
7004         struct wpa_supplicant *wpa_s = eloop_ctx;
7005
7006         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7007         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7008 }
7009
7010
7011 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7012                                         struct wpa_ssid *ssid)
7013 {
7014         struct wpa_supplicant *iface;
7015
7016         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7017                 if (!iface->current_ssid ||
7018                     iface->current_ssid->frequency == freq ||
7019                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7020                      !iface->current_ssid->p2p_group))
7021                         continue;
7022
7023                 /* Remove the connection with least priority */
7024                 if (!wpas_is_p2p_prioritized(iface)) {
7025                         /* STA connection has priority over existing
7026                          * P2P connection, so remove the interface. */
7027                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7028                         eloop_register_timeout(0, 0,
7029                                                wpas_p2p_group_freq_conflict,
7030                                                iface, NULL);
7031                         /* If connection in progress is P2P connection, do not
7032                          * proceed for the connection. */
7033                         if (wpa_s == iface)
7034                                 return -1;
7035                         else
7036                                 return 0;
7037                 } else {
7038                         /* P2P connection has priority, disable the STA network
7039                          */
7040                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7041                                                        ssid);
7042                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7043                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7044                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7045                                   ETH_ALEN);
7046                         /* If P2P connection is in progress, continue
7047                          * connecting...*/
7048                         if (wpa_s == iface)
7049                                 return 0;
7050                         else
7051                                 return -1;
7052                 }
7053         }
7054
7055         return 0;
7056 }
7057
7058
7059 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7060 {
7061         struct wpa_ssid *ssid = wpa_s->current_ssid;
7062
7063         if (ssid == NULL || !ssid->p2p_group)
7064                 return 0;
7065
7066         if (wpa_s->p2p_last_4way_hs_fail &&
7067             wpa_s->p2p_last_4way_hs_fail == ssid) {
7068                 u8 go_dev_addr[ETH_ALEN];
7069                 struct wpa_ssid *persistent;
7070
7071                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7072                                               ssid->ssid,
7073                                               ssid->ssid_len) <= 0) {
7074                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7075                         goto disconnect;
7076                 }
7077
7078                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7079                         MACSTR, MAC2STR(go_dev_addr));
7080                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7081                                                      ssid->ssid,
7082                                                      ssid->ssid_len);
7083                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7084                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7085                         goto disconnect;
7086                 }
7087                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7088                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7089                                persistent->id);
7090         disconnect:
7091                 wpa_s->p2p_last_4way_hs_fail = NULL;
7092                 /*
7093                  * Remove the group from a timeout to avoid issues with caller
7094                  * continuing to use the interface if this is on a P2P group
7095                  * interface.
7096                  */
7097                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7098                                        wpa_s, NULL);
7099                 return 1;
7100         }
7101
7102         wpa_s->p2p_last_4way_hs_fail = ssid;
7103         return 0;
7104 }
7105
7106
7107 #ifdef CONFIG_WPS_NFC
7108
7109 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7110                                              struct wpabuf *p2p)
7111 {
7112         struct wpabuf *ret;
7113         size_t wsc_len;
7114
7115         if (p2p == NULL) {
7116                 wpabuf_free(wsc);
7117                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7118                 return NULL;
7119         }
7120
7121         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7122         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7123         if (ret == NULL) {
7124                 wpabuf_free(wsc);
7125                 wpabuf_free(p2p);
7126                 return NULL;
7127         }
7128
7129         wpabuf_put_be16(ret, wsc_len);
7130         if (wsc)
7131                 wpabuf_put_buf(ret, wsc);
7132         wpabuf_put_be16(ret, wpabuf_len(p2p));
7133         wpabuf_put_buf(ret, p2p);
7134
7135         wpabuf_free(wsc);
7136         wpabuf_free(p2p);
7137         wpa_hexdump_buf(MSG_DEBUG,
7138                         "P2P: Generated NFC connection handover message", ret);
7139
7140         if (ndef && ret) {
7141                 struct wpabuf *tmp;
7142                 tmp = ndef_build_p2p(ret);
7143                 wpabuf_free(ret);
7144                 if (tmp == NULL) {
7145                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7146                         return NULL;
7147                 }
7148                 ret = tmp;
7149         }
7150
7151         return ret;
7152 }
7153
7154
7155 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7156                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7157 {
7158         struct wpa_supplicant *iface;
7159
7160         if (go_dev_addr)
7161                 os_memset(go_dev_addr, 0, ETH_ALEN);
7162         if (ssid)
7163                 *ssid = NULL;
7164         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7165                 if (iface->wpa_state < WPA_ASSOCIATING ||
7166                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7167                     !iface->current_ssid->p2p_group ||
7168                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7169                         continue;
7170                 if (ssid)
7171                         *ssid = iface->current_ssid;
7172                 if (go_dev_addr)
7173                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7174                 return iface->assoc_freq;
7175         }
7176         return 0;
7177 }
7178
7179
7180 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7181                                           int ndef)
7182 {
7183         struct wpabuf *wsc, *p2p;
7184         struct wpa_ssid *ssid;
7185         u8 go_dev_addr[ETH_ALEN];
7186         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7187
7188         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7189                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7190                 return NULL;
7191         }
7192
7193         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7194             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7195                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7196                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7197                 return NULL;
7198         }
7199
7200         if (cli_freq == 0) {
7201                 wsc = wps_build_nfc_handover_req_p2p(
7202                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7203         } else
7204                 wsc = NULL;
7205         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7206                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7207                                          ssid ? ssid->ssid_len : 0);
7208
7209         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7210 }
7211
7212
7213 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7214                                           int ndef, int tag)
7215 {
7216         struct wpabuf *wsc, *p2p;
7217         struct wpa_ssid *ssid;
7218         u8 go_dev_addr[ETH_ALEN];
7219         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7220
7221         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7222                 return NULL;
7223
7224         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7225             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7226                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7227                 return NULL;
7228
7229         if (cli_freq == 0) {
7230                 wsc = wps_build_nfc_handover_sel_p2p(
7231                         wpa_s->parent->wps,
7232                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7233                         DEV_PW_NFC_CONNECTION_HANDOVER,
7234                         wpa_s->conf->wps_nfc_dh_pubkey,
7235                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7236         } else
7237                 wsc = NULL;
7238         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7239                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7240                                          ssid ? ssid->ssid_len : 0);
7241
7242         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7243 }
7244
7245
7246 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7247                                    struct p2p_nfc_params *params)
7248 {
7249         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7250                    "connection handover (freq=%d)",
7251                    params->go_freq);
7252
7253         if (params->go_freq && params->go_ssid_len) {
7254                 wpa_s->p2p_wps_method = WPS_NFC;
7255                 wpa_s->pending_join_wps_method = WPS_NFC;
7256                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7257                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7258                           ETH_ALEN);
7259                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7260                                            params->go_ssid,
7261                                            params->go_ssid_len);
7262         }
7263
7264         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7265                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7266                                 params->go_freq, -1, 0, 1, 1);
7267 }
7268
7269
7270 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7271                                   struct p2p_nfc_params *params, int tag)
7272 {
7273         int res, persistent;
7274         struct wpa_ssid *ssid;
7275
7276         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7277                    "connection handover");
7278         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7279                 ssid = wpa_s->current_ssid;
7280                 if (ssid == NULL)
7281                         continue;
7282                 if (ssid->mode != WPAS_MODE_P2P_GO)
7283                         continue;
7284                 if (wpa_s->ap_iface == NULL)
7285                         continue;
7286                 break;
7287         }
7288         if (wpa_s == NULL) {
7289                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7290                 return -1;
7291         }
7292
7293         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7294             DEV_PW_NFC_CONNECTION_HANDOVER &&
7295             !wpa_s->parent->p2p_oob_dev_pw) {
7296                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7297                 return -1;
7298         }
7299         res = wpas_ap_wps_add_nfc_pw(
7300                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7301                 wpa_s->parent->p2p_oob_dev_pw,
7302                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7303                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7304         if (res)
7305                 return res;
7306
7307         if (!tag) {
7308                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7309                 return 0;
7310         }
7311
7312         if (!params->peer ||
7313             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7314                 return 0;
7315
7316         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7317                    " to join", MAC2STR(params->peer->p2p_device_addr));
7318
7319         wpa_s->global->p2p_invite_group = wpa_s;
7320         persistent = ssid->p2p_persistent_group &&
7321                 wpas_p2p_get_persistent(wpa_s->parent,
7322                                         params->peer->p2p_device_addr,
7323                                         ssid->ssid, ssid->ssid_len);
7324         wpa_s->parent->pending_invite_ssid_id = -1;
7325
7326         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7327                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7328                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7329                           wpa_s->global->p2p_dev_addr, persistent, 0,
7330                           wpa_s->parent->p2p_oob_dev_pw_id);
7331 }
7332
7333
7334 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7335                                     struct p2p_nfc_params *params,
7336                                     int forced_freq)
7337 {
7338         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7339                    "connection handover");
7340         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7341                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7342                                 forced_freq, -1, 0, 1, 1);
7343 }
7344
7345
7346 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7347                                     struct p2p_nfc_params *params,
7348                                     int forced_freq)
7349 {
7350         int res;
7351
7352         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7353                    "connection handover");
7354         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7355                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7356                                forced_freq, -1, 0, 1, 1);
7357         if (res)
7358                 return res;
7359
7360         res = wpas_p2p_listen(wpa_s, 60);
7361         if (res) {
7362                 p2p_unauthorize(wpa_s->global->p2p,
7363                                 params->peer->p2p_device_addr);
7364         }
7365
7366         return res;
7367 }
7368
7369
7370 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7371                                             const struct wpabuf *data,
7372                                             int sel, int tag, int forced_freq)
7373 {
7374         const u8 *pos, *end;
7375         u16 len, id;
7376         struct p2p_nfc_params params;
7377         int res;
7378
7379         os_memset(&params, 0, sizeof(params));
7380         params.sel = sel;
7381
7382         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7383
7384         pos = wpabuf_head(data);
7385         end = pos + wpabuf_len(data);
7386
7387         if (end - pos < 2) {
7388                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7389                            "attributes");
7390                 return -1;
7391         }
7392         len = WPA_GET_BE16(pos);
7393         pos += 2;
7394         if (pos + len > end) {
7395                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7396                            "attributes");
7397                 return -1;
7398         }
7399         params.wsc_attr = pos;
7400         params.wsc_len = len;
7401         pos += len;
7402
7403         if (end - pos < 2) {
7404                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7405                            "attributes");
7406                 return -1;
7407         }
7408         len = WPA_GET_BE16(pos);
7409         pos += 2;
7410         if (pos + len > end) {
7411                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7412                            "attributes");
7413                 return -1;
7414         }
7415         params.p2p_attr = pos;
7416         params.p2p_len = len;
7417         pos += len;
7418
7419         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7420                     params.wsc_attr, params.wsc_len);
7421         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7422                     params.p2p_attr, params.p2p_len);
7423         if (pos < end) {
7424                 wpa_hexdump(MSG_DEBUG,
7425                             "P2P: Ignored extra data after P2P attributes",
7426                             pos, end - pos);
7427         }
7428
7429         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7430         if (res)
7431                 return res;
7432
7433         if (params.next_step == NO_ACTION)
7434                 return 0;
7435
7436         if (params.next_step == BOTH_GO) {
7437                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7438                         MAC2STR(params.peer->p2p_device_addr));
7439                 return 0;
7440         }
7441
7442         if (params.next_step == PEER_CLIENT) {
7443                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7444                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7445                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7446                                 " ssid=\"%s\"",
7447                                 MAC2STR(params.peer->p2p_device_addr),
7448                                 params.go_freq,
7449                                 MAC2STR(params.go_dev_addr),
7450                                 wpa_ssid_txt(params.go_ssid,
7451                                              params.go_ssid_len));
7452                 } else {
7453                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7454                                 "peer=" MACSTR " freq=%d",
7455                                 MAC2STR(params.peer->p2p_device_addr),
7456                                 params.go_freq);
7457                 }
7458                 return 0;
7459         }
7460
7461         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7462                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7463                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7464                 return 0;
7465         }
7466
7467         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7468         wpa_s->p2p_oob_dev_pw = NULL;
7469
7470         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7471                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7472                            "received");
7473                 return -1;
7474         }
7475
7476         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7477         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7478         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7479                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7480         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7481                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7482         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7483
7484         if (tag) {
7485                 if (id < 0x10) {
7486                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7487                                    "peer OOB Device Password Id %u", id);
7488                         return -1;
7489                 }
7490                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7491                            "Device Password Id %u", id);
7492                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7493                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7494                                 params.oob_dev_pw_len -
7495                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7496                 wpa_s->p2p_oob_dev_pw_id = id;
7497                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7498                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7499                         params.oob_dev_pw_len -
7500                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7501                 if (wpa_s->p2p_oob_dev_pw == NULL)
7502                         return -1;
7503
7504                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7505                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7506                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7507                         return -1;
7508         } else {
7509                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7510                            "without Device Password");
7511                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7512         }
7513
7514         switch (params.next_step) {
7515         case NO_ACTION:
7516         case BOTH_GO:
7517         case PEER_CLIENT:
7518                 /* already covered above */
7519                 return 0;
7520         case JOIN_GROUP:
7521                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7522         case AUTH_JOIN:
7523                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7524         case INIT_GO_NEG:
7525                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7526         case RESP_GO_NEG:
7527                 /* TODO: use own OOB Dev Pw */
7528                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7529         }
7530
7531         return -1;
7532 }
7533
7534
7535 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7536                              const struct wpabuf *data, int forced_freq)
7537 {
7538         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7539                 return -1;
7540
7541         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7542 }
7543
7544
7545 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7546                                  const struct wpabuf *req,
7547                                  const struct wpabuf *sel, int forced_freq)
7548 {
7549         struct wpabuf *tmp;
7550         int ret;
7551
7552         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7553                 return -1;
7554
7555         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7556
7557         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7558                           wpabuf_head(req), wpabuf_len(req));
7559         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7560                           wpabuf_head(sel), wpabuf_len(sel));
7561         if (forced_freq)
7562                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7563         tmp = ndef_parse_p2p(init ? sel : req);
7564         if (tmp == NULL) {
7565                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7566                 return -1;
7567         }
7568
7569         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7570                                                forced_freq);
7571         wpabuf_free(tmp);
7572
7573         return ret;
7574 }
7575
7576
7577 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7578 {
7579         const u8 *if_addr;
7580         int go_intent = wpa_s->conf->p2p_go_intent;
7581         struct wpa_supplicant *iface;
7582
7583         if (wpa_s->global->p2p == NULL)
7584                 return -1;
7585
7586         if (!enabled) {
7587                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7588                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7589                 {
7590                         if (!iface->ap_iface)
7591                                 continue;
7592                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7593                 }
7594                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7595                                                  0, NULL);
7596                 if (wpa_s->p2p_nfc_tag_enabled)
7597                         wpas_p2p_remove_pending_group_interface(wpa_s);
7598                 wpa_s->p2p_nfc_tag_enabled = 0;
7599                 return 0;
7600         }
7601
7602         if (wpa_s->global->p2p_disabled)
7603                 return -1;
7604
7605         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7606             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7607             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7608             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7609                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7610                            "to allow static handover cases");
7611                 return -1;
7612         }
7613
7614         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7615
7616         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7617         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7618         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7619         if (wpa_s->p2p_oob_dev_pw == NULL)
7620                 return -1;
7621         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7622
7623         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7624             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7625                 /*
7626                  * P2P Group Interface present and the command came on group
7627                  * interface, so enable the token for the current interface.
7628                  */
7629                 wpa_s->create_p2p_iface = 0;
7630         } else {
7631                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7632         }
7633
7634         if (wpa_s->create_p2p_iface) {
7635                 enum wpa_driver_if_type iftype;
7636                 /* Prepare to add a new interface for the group */
7637                 iftype = WPA_IF_P2P_GROUP;
7638                 if (go_intent == 15)
7639                         iftype = WPA_IF_P2P_GO;
7640                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7641                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7642                                    "interface for the group");
7643                         return -1;
7644                 }
7645
7646                 if_addr = wpa_s->pending_interface_addr;
7647         } else
7648                 if_addr = wpa_s->own_addr;
7649
7650         wpa_s->p2p_nfc_tag_enabled = enabled;
7651
7652         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7653                 struct hostapd_data *hapd;
7654                 if (iface->ap_iface == NULL)
7655                         continue;
7656                 hapd = iface->ap_iface->bss[0];
7657                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7658                 hapd->conf->wps_nfc_dh_pubkey =
7659                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7660                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7661                 hapd->conf->wps_nfc_dh_privkey =
7662                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7663                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7664                 hapd->conf->wps_nfc_dev_pw =
7665                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7666                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7667
7668                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7669                         wpa_dbg(iface, MSG_DEBUG,
7670                                 "P2P: Failed to enable NFC Tag for GO");
7671                 }
7672         }
7673         p2p_set_authorized_oob_dev_pw_id(
7674                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7675                 if_addr);
7676
7677         return 0;
7678 }
7679
7680 #endif /* CONFIG_WPS_NFC */