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.
  61  */
  62 #define P2P_MAX_INITIAL_CONN_WAIT 10
  63 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  64
  65 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  66 /*
  67  * How many seconds to wait for initial 4-way handshake to get completed after
  68  * WPS provisioning step on the GO. This controls the extra time the P2P
  69  * operation is considered to be in progress (e.g., to delay other scans) after
  70  * WPS provisioning has been completed on the GO during group formation.
  71  */
  72 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  73 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  74
  75 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  76 /*
  77  * How many seconds to wait for initial 4-way handshake to get completed after
  78  * re-invocation of a persistent group on the GO when the client is expected
  79  * to connect automatically (no user interaction).
  80  */
  81 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  82 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  83
  84 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  85 #define P2P_CONCURRENT_SEARCH_DELAY 500
  86 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  87
  88 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  89
  90 enum p2p_group_removal_reason {
  91         P2P_GROUP_REMOVAL_UNKNOWN,
  92         P2P_GROUP_REMOVAL_SILENT,
  93         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  94         P2P_GROUP_REMOVAL_REQUESTED,
  95         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  96         P2P_GROUP_REMOVAL_UNAVAILABLE,
  97         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  98         P2P_GROUP_REMOVAL_PSK_FAILURE,
  99         P2P_GROUP_REMOVAL_FREQ_CONFLICT
 100 };
 101
 102
 103 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 104 static struct wpa_supplicant *
 105 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 106                          int go);
 107 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 108                                const u8 *ssid, size_t ssid_len);
 109 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 110                                    const u8 *ssid, size_t ssid_len);
 111 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 112 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 113                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 114                          int auto_join, int freq,
 115                          const u8 *ssid, size_t ssid_len);
 116 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 117 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 118 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 119 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 120 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 121                                              void *timeout_ctx);
 122 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 123 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 124                                         int group_added);
 125 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 126 static void wpas_stop_listen(void *ctx);
 127
 128
 129 /*
 130  * Get the number of concurrent channels that the HW can operate, but that are
 131  * currently not in use by any of the wpa_supplicant interfaces.
 132  */
 133 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 134 {
 135         int *freqs;
 136         int num, unused;
 137
 138         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 139         if (!freqs)
 140                 return -1;
 141
 142         num = get_shared_radio_freqs(wpa_s, freqs,
 143                                      wpa_s->num_multichan_concurrent);
 144         os_free(freqs);
 145
 146         unused = wpa_s->num_multichan_concurrent - num;
 147         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 148         return unused;
 149 }
 150
 151
 152 /*
 153  * Get the frequencies that are currently in use by one or more of the virtual
 154  * interfaces, and that are also valid for P2P operation.
 155  */
 156 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 157                                      int *p2p_freqs, unsigned int len)
 158 {
 159         int *freqs;
 160         unsigned int num, i, j;
 161
 162         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 163         if (!freqs)
 164                 return -1;
 165
 166         num = get_shared_radio_freqs(wpa_s, freqs,
 167                                      wpa_s->num_multichan_concurrent);
 168
 169         os_memset(p2p_freqs, 0, sizeof(int) * len);
 170
 171         for (i = 0, j = 0; i < num && j < len; i++) {
 172                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 173                         p2p_freqs[j++] = freqs[i];
 174         }
 175
 176         os_free(freqs);
 177
 178         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 179
 180         return j;
 181 }
 182
 183
 184 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 185                                              int freq)
 186 {
 187         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 188                 return;
 189         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 190             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 191             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 192                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 193                            freq);
 194                 freq = 0;
 195         }
 196         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 197 }
 198
 199
 200 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 201                                       struct wpa_scan_results *scan_res)
 202 {
 203         size_t i;
 204
 205         if (wpa_s->p2p_scan_work) {
 206                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 207                 wpa_s->p2p_scan_work = NULL;
 208                 radio_work_done(work);
 209         }
 210
 211         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 212                 return;
 213
 214         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 215                    (int) scan_res->num);
 216
 217         for (i = 0; i < scan_res->num; i++) {
 218                 struct wpa_scan_res *bss = scan_res->res[i];
 219                 struct os_reltime time_tmp_age, entry_ts;
 220                 const u8 *ies;
 221                 size_t ies_len;
 222
 223                 time_tmp_age.sec = bss->age / 1000;
 224                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 225                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 226
 227                 ies = (const u8 *) (bss + 1);
 228                 ies_len = bss->ie_len;
 229                 if (bss->beacon_ie_len > 0 &&
 230                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 231                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 232                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 233                                    MACSTR, MAC2STR(bss->bssid));
 234                         ies = ies + ies_len;
 235                         ies_len = bss->beacon_ie_len;
 236                 }
 237
 238
 239                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 240                                          bss->freq, &entry_ts, bss->level,
 241                                          ies, ies_len) > 0)
 242                         break;
 243         }
 244
 245         p2p_scan_res_handled(wpa_s->global->p2p);
 246 }
 247
 248
 249 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 250 {
 251         struct wpa_supplicant *wpa_s = work->wpa_s;
 252         struct wpa_driver_scan_params *params = work->ctx;
 253         int ret;
 254
 255         if (deinit) {
 256                 if (!work->started) {
 257                         wpa_scan_free_params(params);
 258                         return;
 259                 }
 260
 261                 wpa_s->p2p_scan_work = NULL;
 262                 return;
 263         }
 264
 265         ret = wpa_drv_scan(wpa_s, params);
 266         wpa_scan_free_params(params);
 267         work->ctx = NULL;
 268         if (ret) {
 269                 radio_work_done(work);
 270                 return;
 271         }
 272
 273         os_get_reltime(&wpa_s->scan_trigger_time);
 274         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 275         wpa_s->own_scan_requested = 1;
 276         wpa_s->p2p_scan_work = work;
 277 }
 278
 279
 280 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 281                          unsigned int num_req_dev_types,
 282                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 283 {
 284         struct wpa_supplicant *wpa_s = ctx;
 285         struct wpa_driver_scan_params *params = NULL;
 286         struct wpabuf *wps_ie, *ies;
 287         size_t ielen;
 288         u8 *n;
 289
 290         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 291                 return -1;
 292
 293         if (wpa_s->p2p_scan_work) {
 294                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 295                 return -1;
 296         }
 297
 298         params = os_zalloc(sizeof(*params));
 299         if (params == NULL)
 300                 return -1;
 301
 302         /* P2P Wildcard SSID */
 303         params->num_ssids = 1;
 304         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 305         if (n == NULL)
 306                 goto fail;
 307         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 308         params->ssids[0].ssid = n;
 309         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 310
 311         wpa_s->wps->dev.p2p = 1;
 312         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 313                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 314                                         num_req_dev_types, req_dev_types);
 315         if (wps_ie == NULL)
 316                 goto fail;
 317
 318         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 319         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 320         if (ies == NULL) {
 321                 wpabuf_free(wps_ie);
 322                 goto fail;
 323         }
 324         wpabuf_put_buf(ies, wps_ie);
 325         wpabuf_free(wps_ie);
 326
 327         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 328
 329         params->p2p_probe = 1;
 330         n = os_malloc(wpabuf_len(ies));
 331         if (n == NULL) {
 332                 wpabuf_free(ies);
 333                 goto fail;
 334         }
 335         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 336         params->extra_ies = n;
 337         params->extra_ies_len = wpabuf_len(ies);
 338         wpabuf_free(ies);
 339
 340         switch (type) {
 341         case P2P_SCAN_SOCIAL:
 342                 params->freqs = os_malloc(4 * sizeof(int));
 343                 if (params->freqs == NULL)
 344                         goto fail;
 345                 params->freqs[0] = 2412;
 346                 params->freqs[1] = 2437;
 347                 params->freqs[2] = 2462;
 348                 params->freqs[3] = 0;
 349                 break;
 350         case P2P_SCAN_FULL:
 351                 break;
 352         case P2P_SCAN_SOCIAL_PLUS_ONE:
 353                 params->freqs = os_malloc(5 * sizeof(int));
 354                 if (params->freqs == NULL)
 355                         goto fail;
 356                 params->freqs[0] = 2412;
 357                 params->freqs[1] = 2437;
 358                 params->freqs[2] = 2462;
 359                 params->freqs[3] = freq;
 360                 params->freqs[4] = 0;
 361                 break;
 362         }
 363
 364         radio_remove_works(wpa_s, "p2p-scan", 0);
 365         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 366                            params) < 0)
 367                 goto fail;
 368         return 0;
 369
 370 fail:
 371         wpa_scan_free_params(params);
 372         return -1;
 373 }
 374
 375
 376 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 377 {
 378         switch (p2p_group_interface) {
 379         case P2P_GROUP_INTERFACE_PENDING:
 380                 return WPA_IF_P2P_GROUP;
 381         case P2P_GROUP_INTERFACE_GO:
 382                 return WPA_IF_P2P_GO;
 383         case P2P_GROUP_INTERFACE_CLIENT:
 384                 return WPA_IF_P2P_CLIENT;
 385         }
 386
 387         return WPA_IF_P2P_GROUP;
 388 }
 389
 390
 391 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 392                                                   const u8 *ssid,
 393                                                   size_t ssid_len, int *go)
 394 {
 395         struct wpa_ssid *s;
 396
 397         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 398                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 399                         if (s->disabled != 0 || !s->p2p_group ||
 400                             s->ssid_len != ssid_len ||
 401                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 402                                 continue;
 403                         if (s->mode == WPAS_MODE_P2P_GO &&
 404                             s != wpa_s->current_ssid)
 405                                 continue;
 406                         if (go)
 407                                 *go = s->mode == WPAS_MODE_P2P_GO;
 408                         return wpa_s;
 409                 }
 410         }
 411
 412         return NULL;
 413 }
 414
 415
 416 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 417                                  enum p2p_group_removal_reason removal_reason)
 418 {
 419         struct wpa_ssid *ssid;
 420         char *gtype;
 421         const char *reason;
 422
 423         ssid = wpa_s->current_ssid;
 424         if (ssid == NULL) {
 425                 /*
 426                  * The current SSID was not known, but there may still be a
 427                  * pending P2P group interface waiting for provisioning or a
 428                  * P2P group that is trying to reconnect.
 429                  */
 430                 ssid = wpa_s->conf->ssid;
 431                 while (ssid) {
 432                         if (ssid->p2p_group && ssid->disabled != 2)
 433                                 break;
 434                         ssid = ssid->next;
 435                 }
 436                 if (ssid == NULL &&
 437                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 438                 {
 439                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 440                                    "not found");
 441                         return -1;
 442                 }
 443         }
 444         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 445                 gtype = "GO";
 446         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 447                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 448                 wpa_s->reassociate = 0;
 449                 wpa_s->disconnected = 1;
 450                 wpa_supplicant_deauthenticate(wpa_s,
 451                                               WLAN_REASON_DEAUTH_LEAVING);
 452                 gtype = "client";
 453         } else
 454                 gtype = "GO";
 455         if (wpa_s->cross_connect_in_use) {
 456                 wpa_s->cross_connect_in_use = 0;
 457                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 458                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 459                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 460         }
 461         switch (removal_reason) {
 462         case P2P_GROUP_REMOVAL_REQUESTED:
 463                 reason = " reason=REQUESTED";
 464                 break;
 465         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 466                 reason = " reason=FORMATION_FAILED";
 467                 break;
 468         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 469                 reason = " reason=IDLE";
 470                 break;
 471         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 472                 reason = " reason=UNAVAILABLE";
 473                 break;
 474         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 475                 reason = " reason=GO_ENDING_SESSION";
 476                 break;
 477         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 478                 reason = " reason=PSK_FAILURE";
 479                 break;
 480         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 481                 reason = " reason=FREQ_CONFLICT";
 482                 break;
 483         default:
 484                 reason = "";
 485                 break;
 486         }
 487         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 488                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 489                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 490                                wpa_s->ifname, gtype, reason);
 491         }
 492
 493         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 494                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 495         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 496                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 497         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 498                                  wpa_s->parent, NULL) > 0) {
 499                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 500                            "timeout");
 501                 wpa_s->p2p_in_provisioning = 0;
 502         }
 503
 504         /*
 505          * Make sure wait for the first client does not remain active after the
 506          * group has been removed.
 507          */
 508         wpa_s->global->p2p_go_wait_client.sec = 0;
 509
 510         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 511                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 512
 513         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 514                 struct wpa_global *global;
 515                 char *ifname;
 516                 enum wpa_driver_if_type type;
 517                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 518                         wpa_s->ifname);
 519                 global = wpa_s->global;
 520                 ifname = os_strdup(wpa_s->ifname);
 521                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 522                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 523                 wpa_s = global->ifaces;
 524                 if (wpa_s && ifname)
 525                         wpa_drv_if_remove(wpa_s, type, ifname);
 526                 os_free(ifname);
 527                 return 1;
 528         }
 529
 530         if (!wpa_s->p2p_go_group_formation_completed) {
 531                 wpa_s->global->p2p_group_formation = NULL;
 532                 wpa_s->p2p_in_provisioning = 0;
 533         }
 534
 535         wpa_s->show_group_started = 0;
 536         os_free(wpa_s->go_params);
 537         wpa_s->go_params = NULL;
 538
 539         wpa_s->waiting_presence_resp = 0;
 540
 541         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 542         if (ssid && (ssid->p2p_group ||
 543                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 544                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 545                 int id = ssid->id;
 546                 if (ssid == wpa_s->current_ssid) {
 547                         wpa_sm_set_config(wpa_s->wpa, NULL);
 548                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 549                         wpa_s->current_ssid = NULL;
 550                 }
 551                 /*
 552                  * Networks objects created during any P2P activities are not
 553                  * exposed out as they might/will confuse certain non-P2P aware
 554                  * applications since these network objects won't behave like
 555                  * regular ones.
 556                  *
 557                  * Likewise, we don't send out network removed signals for such
 558                  * network objects.
 559                  */
 560                 wpa_config_remove_network(wpa_s->conf, id);
 561                 wpa_supplicant_clear_status(wpa_s);
 562                 wpa_supplicant_cancel_sched_scan(wpa_s);
 563         } else {
 564                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 565                            "found");
 566         }
 567         if (wpa_s->ap_iface)
 568                 wpa_supplicant_ap_deinit(wpa_s);
 569         else
 570                 wpa_drv_deinit_p2p_cli(wpa_s);
 571
 572         return 0;
 573 }
 574
 575
 576 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 577                                      u8 *go_dev_addr,
 578                                      const u8 *ssid, size_t ssid_len)
 579 {
 580         struct wpa_bss *bss;
 581         const u8 *bssid;
 582         struct wpabuf *p2p;
 583         u8 group_capab;
 584         const u8 *addr;
 585
 586         if (wpa_s->go_params)
 587                 bssid = wpa_s->go_params->peer_interface_addr;
 588         else
 589                 bssid = wpa_s->bssid;
 590
 591         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 592         if (bss == NULL && wpa_s->go_params &&
 593             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 594                 bss = wpa_bss_get_p2p_dev_addr(
 595                         wpa_s, wpa_s->go_params->peer_device_addr);
 596         if (bss == NULL) {
 597                 u8 iface_addr[ETH_ALEN];
 598                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 599                                            iface_addr) == 0)
 600                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 601         }
 602         if (bss == NULL) {
 603                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 604                            "group is persistent - BSS " MACSTR " not found",
 605                            MAC2STR(bssid));
 606                 return 0;
 607         }
 608
 609         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 610         if (p2p == NULL)
 611                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 612                                                          P2P_IE_VENDOR_TYPE);
 613         if (p2p == NULL) {
 614                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 615                            "group is persistent - BSS " MACSTR
 616                            " did not include P2P IE", MAC2STR(bssid));
 617                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 618                             (u8 *) (bss + 1), bss->ie_len);
 619                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 620                             ((u8 *) bss + 1) + bss->ie_len,
 621                             bss->beacon_ie_len);
 622                 return 0;
 623         }
 624
 625         group_capab = p2p_get_group_capab(p2p);
 626         addr = p2p_get_go_dev_addr(p2p);
 627         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 628                    "group_capab=0x%x", group_capab);
 629         if (addr) {
 630                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 631                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 632                            MAC2STR(addr));
 633         } else
 634                 os_memset(go_dev_addr, 0, ETH_ALEN);
 635         wpabuf_free(p2p);
 636
 637         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 638                    "go_dev_addr=" MACSTR,
 639                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 640
 641         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 642 }
 643
 644
 645 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 646                                            struct wpa_ssid *ssid,
 647                                            const u8 *go_dev_addr)
 648 {
 649         struct wpa_ssid *s;
 650         int changed = 0;
 651
 652         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 653                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 654         for (s = wpa_s->conf->ssid; s; s = s->next) {
 655                 if (s->disabled == 2 &&
 656                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 657                     s->ssid_len == ssid->ssid_len &&
 658                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 659                         break;
 660         }
 661
 662         if (s) {
 663                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 664                            "entry");
 665                 if (ssid->passphrase && !s->passphrase)
 666                         changed = 1;
 667                 else if (ssid->passphrase && s->passphrase &&
 668                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 669                         changed = 1;
 670         } else {
 671                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 672                            "entry");
 673                 changed = 1;
 674                 s = wpa_config_add_network(wpa_s->conf);
 675                 if (s == NULL)
 676                         return -1;
 677
 678                 /*
 679                  * Instead of network_added we emit persistent_group_added
 680                  * notification. Also to keep the defense checks in
 681                  * persistent_group obj registration method, we set the
 682                  * relevant flags in s to designate it as a persistent group.
 683                  */
 684                 s->p2p_group = 1;
 685                 s->p2p_persistent_group = 1;
 686                 wpas_notify_persistent_group_added(wpa_s, s);
 687                 wpa_config_set_network_defaults(s);
 688         }
 689
 690         s->p2p_group = 1;
 691         s->p2p_persistent_group = 1;
 692         s->disabled = 2;
 693         s->bssid_set = 1;
 694         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 695         s->mode = ssid->mode;
 696         s->auth_alg = WPA_AUTH_ALG_OPEN;
 697         s->key_mgmt = WPA_KEY_MGMT_PSK;
 698         s->proto = WPA_PROTO_RSN;
 699         s->pairwise_cipher = WPA_CIPHER_CCMP;
 700         s->export_keys = 1;
 701         if (ssid->passphrase) {
 702                 os_free(s->passphrase);
 703                 s->passphrase = os_strdup(ssid->passphrase);
 704         }
 705         if (ssid->psk_set) {
 706                 s->psk_set = 1;
 707                 os_memcpy(s->psk, ssid->psk, 32);
 708         }
 709         if (s->passphrase && !s->psk_set)
 710                 wpa_config_update_psk(s);
 711         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 712                 os_free(s->ssid);
 713                 s->ssid = os_malloc(ssid->ssid_len);
 714         }
 715         if (s->ssid) {
 716                 s->ssid_len = ssid->ssid_len;
 717                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 718         }
 719         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 720                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 721                 wpa_s->global->add_psk = NULL;
 722                 changed = 1;
 723         }
 724
 725         if (changed && wpa_s->conf->update_config &&
 726             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 727                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 728         }
 729
 730         return s->id;
 731 }
 732
 733
 734 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 735                                                  const u8 *addr)
 736 {
 737         struct wpa_ssid *ssid, *s;
 738         u8 *n;
 739         size_t i;
 740         int found = 0;
 741
 742         ssid = wpa_s->current_ssid;
 743         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 744             !ssid->p2p_persistent_group)
 745                 return;
 746
 747         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 748                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 749                         continue;
 750
 751                 if (s->ssid_len == ssid->ssid_len &&
 752                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 753                         break;
 754         }
 755
 756         if (s == NULL)
 757                 return;
 758
 759         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 760                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 761                               ETH_ALEN) != 0)
 762                         continue;
 763
 764                 if (i == s->num_p2p_clients - 1)
 765                         return; /* already the most recent entry */
 766
 767                 /* move the entry to mark it most recent */
 768                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 769                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 770                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 771                 os_memcpy(s->p2p_client_list +
 772                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 773                 found = 1;
 774                 break;
 775         }
 776
 777         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 778                 n = os_realloc_array(s->p2p_client_list,
 779                                      s->num_p2p_clients + 1, ETH_ALEN);
 780                 if (n == NULL)
 781                         return;
 782                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 783                 s->p2p_client_list = n;
 784                 s->num_p2p_clients++;
 785         } else if (!found) {
 786                 /* Not enough room for an additional entry - drop the oldest
 787                  * entry */
 788                 os_memmove(s->p2p_client_list,
 789                            s->p2p_client_list + ETH_ALEN,
 790                            (s->num_p2p_clients - 1) * ETH_ALEN);
 791                 os_memcpy(s->p2p_client_list +
 792                           (s->num_p2p_clients - 1) * ETH_ALEN,
 793                           addr, ETH_ALEN);
 794         }
 795
 796         if (wpa_s->parent->conf->update_config &&
 797             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 798                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 799 }
 800
 801
 802 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 803                                            int success)
 804 {
 805         struct wpa_ssid *ssid;
 806         const char *ssid_txt;
 807         int client;
 808         int persistent;
 809         u8 go_dev_addr[ETH_ALEN];
 810         int network_id = -1;
 811
 812         /*
 813          * This callback is likely called for the main interface. Update wpa_s
 814          * to use the group interface if a new interface was created for the
 815          * group.
 816          */
 817         if (wpa_s->global->p2p_group_formation)
 818                 wpa_s = wpa_s->global->p2p_group_formation;
 819         if (wpa_s->p2p_go_group_formation_completed) {
 820                 wpa_s->global->p2p_group_formation = NULL;
 821                 wpa_s->p2p_in_provisioning = 0;
 822         }
 823
 824         if (!success) {
 825                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 826                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 827                 wpas_p2p_group_delete(wpa_s,
 828                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 829                 return;
 830         }
 831
 832         wpa_msg_global(wpa_s->parent, MSG_INFO,
 833                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 834
 835         ssid = wpa_s->current_ssid;
 836         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 837                 ssid->mode = WPAS_MODE_P2P_GO;
 838                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 839                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 840         }
 841
 842         persistent = 0;
 843         if (ssid) {
 844                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 845                 client = ssid->mode == WPAS_MODE_INFRA;
 846                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 847                         persistent = ssid->p2p_persistent_group;
 848                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 849                                   ETH_ALEN);
 850                 } else
 851                         persistent = wpas_p2p_persistent_group(wpa_s,
 852                                                                go_dev_addr,
 853                                                                ssid->ssid,
 854                                                                ssid->ssid_len);
 855         } else {
 856                 ssid_txt = "";
 857                 client = wpa_s->p2p_group_interface ==
 858                         P2P_GROUP_INTERFACE_CLIENT;
 859                 os_memset(go_dev_addr, 0, ETH_ALEN);
 860         }
 861
 862         wpa_s->show_group_started = 0;
 863         if (client) {
 864                 /*
 865                  * Indicate event only after successfully completed 4-way
 866                  * handshake, i.e., when the interface is ready for data
 867                  * packets.
 868                  */
 869                 wpa_s->show_group_started = 1;
 870         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 871                 char psk[65];
 872                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 873                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 874                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 875                                MACSTR "%s",
 876                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 877                                MAC2STR(go_dev_addr),
 878                                persistent ? " [PERSISTENT]" : "");
 879                 wpas_p2p_cross_connect_setup(wpa_s);
 880                 wpas_p2p_set_group_idle_timeout(wpa_s);
 881         } else {
 882                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 883                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 884                                "go_dev_addr=" MACSTR "%s",
 885                                wpa_s->ifname, ssid_txt,
 886                                ssid ? ssid->frequency : 0,
 887                                ssid && ssid->passphrase ? ssid->passphrase : "",
 888                                MAC2STR(go_dev_addr),
 889                                persistent ? " [PERSISTENT]" : "");
 890                 wpas_p2p_cross_connect_setup(wpa_s);
 891                 wpas_p2p_set_group_idle_timeout(wpa_s);
 892         }
 893
 894         if (persistent)
 895                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 896                                                              ssid, go_dev_addr);
 897         else {
 898                 os_free(wpa_s->global->add_psk);
 899                 wpa_s->global->add_psk = NULL;
 900         }
 901         if (network_id < 0 && ssid)
 902                 network_id = ssid->id;
 903         if (!client) {
 904                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 905                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 906         }
 907 }
 908
 909
 910 struct send_action_work {
 911         unsigned int freq;
 912         u8 dst[ETH_ALEN];
 913         u8 src[ETH_ALEN];
 914         u8 bssid[ETH_ALEN];
 915         size_t len;
 916         unsigned int wait_time;
 917         u8 buf[0];
 918 };
 919
 920
 921 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 922                                               void *timeout_ctx)
 923 {
 924         struct wpa_supplicant *wpa_s = eloop_ctx;
 925
 926         if (!wpa_s->p2p_send_action_work)
 927                 return;
 928
 929         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 930         os_free(wpa_s->p2p_send_action_work->ctx);
 931         radio_work_done(wpa_s->p2p_send_action_work);
 932         wpa_s->p2p_send_action_work = NULL;
 933 }
 934
 935
 936 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 937                                            unsigned int freq,
 938                                            const u8 *dst, const u8 *src,
 939                                            const u8 *bssid,
 940                                            const u8 *data, size_t data_len,
 941                                            enum offchannel_send_action_result
 942                                            result)
 943 {
 944         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 945
 946         if (wpa_s->p2p_send_action_work) {
 947                 struct send_action_work *awork;
 948                 awork = wpa_s->p2p_send_action_work->ctx;
 949                 if (awork->wait_time == 0) {
 950                         os_free(awork);
 951                         radio_work_done(wpa_s->p2p_send_action_work);
 952                         wpa_s->p2p_send_action_work = NULL;
 953                 } else {
 954                         /*
 955                          * In theory, this should not be needed, but number of
 956                          * places in the P2P code is still using non-zero wait
 957                          * time for the last Action frame in the sequence and
 958                          * some of these do not call send_action_done().
 959                          */
 960                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 961                                              wpa_s, NULL);
 962                         eloop_register_timeout(
 963                                 0, awork->wait_time * 1000,
 964                                 wpas_p2p_send_action_work_timeout,
 965                                 wpa_s, NULL);
 966                 }
 967         }
 968
 969         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 970                 return;
 971
 972         switch (result) {
 973         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 974                 res = P2P_SEND_ACTION_SUCCESS;
 975                 break;
 976         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 977                 res = P2P_SEND_ACTION_NO_ACK;
 978                 break;
 979         case OFFCHANNEL_SEND_ACTION_FAILED:
 980                 res = P2P_SEND_ACTION_FAILED;
 981                 break;
 982         }
 983
 984         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 985
 986         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 987             wpa_s->pending_pd_before_join &&
 988             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 989              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 990             wpa_s->p2p_fallback_to_go_neg) {
 991                 wpa_s->pending_pd_before_join = 0;
 992                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 993                         "during p2p_connect-auto");
 994                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 995                 return;
 996         }
 997 }
 998
 999
1000 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1001 {
1002         struct wpa_supplicant *wpa_s = work->wpa_s;
1003         struct send_action_work *awork = work->ctx;
1004
1005         if (deinit) {
1006                 if (work->started) {
1007                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1008                                              wpa_s, NULL);
1009                         wpa_s->p2p_send_action_work = NULL;
1010                         offchannel_send_action_done(wpa_s);
1011                 }
1012                 os_free(awork);
1013                 return;
1014         }
1015
1016         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1017                                    awork->bssid, awork->buf, awork->len,
1018                                    awork->wait_time,
1019                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1020                 os_free(awork);
1021                 radio_work_done(work);
1022                 return;
1023         }
1024         wpa_s->p2p_send_action_work = work;
1025 }
1026
1027
1028 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1029                                  unsigned int freq, const u8 *dst,
1030                                  const u8 *src, const u8 *bssid, const u8 *buf,
1031                                  size_t len, unsigned int wait_time)
1032 {
1033         struct send_action_work *awork;
1034
1035         if (wpa_s->p2p_send_action_work) {
1036                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1037                 return -1;
1038         }
1039
1040         awork = os_zalloc(sizeof(*awork) + len);
1041         if (awork == NULL)
1042                 return -1;
1043
1044         awork->freq = freq;
1045         os_memcpy(awork->dst, dst, ETH_ALEN);
1046         os_memcpy(awork->src, src, ETH_ALEN);
1047         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1048         awork->len = len;
1049         awork->wait_time = wait_time;
1050         os_memcpy(awork->buf, buf, len);
1051
1052         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1053                            wpas_send_action_cb, awork) < 0) {
1054                 os_free(awork);
1055                 return -1;
1056         }
1057
1058         return 0;
1059 }
1060
1061
1062 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1063                             const u8 *src, const u8 *bssid, const u8 *buf,
1064                             size_t len, unsigned int wait_time)
1065 {
1066         struct wpa_supplicant *wpa_s = ctx;
1067         int listen_freq = -1, send_freq = -1;
1068
1069         if (wpa_s->p2p_listen_work)
1070                 listen_freq = wpa_s->p2p_listen_work->freq;
1071         if (wpa_s->p2p_send_action_work)
1072                 send_freq = wpa_s->p2p_send_action_work->freq;
1073         if (listen_freq != (int) freq && send_freq != (int) freq) {
1074                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1075                            listen_freq, send_freq);
1076                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1077                                              len, wait_time);
1078         }
1079
1080         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1081         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1082                                       wait_time,
1083                                       wpas_p2p_send_action_tx_status, 1);
1084 }
1085
1086
1087 static void wpas_send_action_done(void *ctx)
1088 {
1089         struct wpa_supplicant *wpa_s = ctx;
1090
1091         if (wpa_s->p2p_send_action_work) {
1092                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1093                                      wpa_s, NULL);
1094                 os_free(wpa_s->p2p_send_action_work->ctx);
1095                 radio_work_done(wpa_s->p2p_send_action_work);
1096                 wpa_s->p2p_send_action_work = NULL;
1097         }
1098
1099         offchannel_send_action_done(wpa_s);
1100 }
1101
1102
1103 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1104                                     struct p2p_go_neg_results *params)
1105 {
1106         if (wpa_s->go_params == NULL) {
1107                 wpa_s->go_params = os_malloc(sizeof(*params));
1108                 if (wpa_s->go_params == NULL)
1109                         return -1;
1110         }
1111         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1112         return 0;
1113 }
1114
1115
1116 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1117                                     struct p2p_go_neg_results *res)
1118 {
1119         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1120                    " dev_addr " MACSTR " wps_method %d",
1121                    MAC2STR(res->peer_interface_addr),
1122                    MAC2STR(res->peer_device_addr), res->wps_method);
1123         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1124                           res->ssid, res->ssid_len);
1125         wpa_supplicant_ap_deinit(wpa_s);
1126         wpas_copy_go_neg_results(wpa_s, res);
1127         if (res->wps_method == WPS_PBC) {
1128                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1129 #ifdef CONFIG_WPS_NFC
1130         } else if (res->wps_method == WPS_NFC) {
1131                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1132                                    res->peer_interface_addr,
1133                                    wpa_s->parent->p2p_oob_dev_pw,
1134                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1135                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1136                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1137                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1138                                    NULL,
1139                                    NULL, 0, 0);
1140 #endif /* CONFIG_WPS_NFC */
1141         } else {
1142                 u16 dev_pw_id = DEV_PW_DEFAULT;
1143                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1144                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1145                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1146                                    wpa_s->p2p_pin, 1, dev_pw_id);
1147         }
1148 }
1149
1150
1151 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1152                                   struct wpa_ssid *ssid)
1153 {
1154         struct wpa_ssid *persistent;
1155         struct psk_list_entry *psk;
1156         struct hostapd_data *hapd;
1157
1158         if (!wpa_s->ap_iface)
1159                 return;
1160
1161         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1162                                              ssid->ssid_len);
1163         if (persistent == NULL)
1164                 return;
1165
1166         hapd = wpa_s->ap_iface->bss[0];
1167
1168         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1169                          list) {
1170                 struct hostapd_wpa_psk *hpsk;
1171
1172                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1173                         MACSTR " psk=%d",
1174                         MAC2STR(psk->addr), psk->p2p);
1175                 hpsk = os_zalloc(sizeof(*hpsk));
1176                 if (hpsk == NULL)
1177                         break;
1178                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1179                 if (psk->p2p)
1180                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1181                 else
1182                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1183                 hpsk->next = hapd->conf->ssid.wpa_psk;
1184                 hapd->conf->ssid.wpa_psk = hpsk;
1185         }
1186 }
1187
1188
1189 static void p2p_go_configured(void *ctx, void *data)
1190 {
1191         struct wpa_supplicant *wpa_s = ctx;
1192         struct p2p_go_neg_results *params = data;
1193         struct wpa_ssid *ssid;
1194         int network_id = -1;
1195
1196         ssid = wpa_s->current_ssid;
1197         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1198                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1199                 if (wpa_s->global->p2p_group_formation == wpa_s)
1200                         wpa_s->global->p2p_group_formation = NULL;
1201                 if (os_strlen(params->passphrase) > 0) {
1202                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1203                                        P2P_EVENT_GROUP_STARTED
1204                                        "%s GO ssid=\"%s\" freq=%d "
1205                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1206                                        "%s", wpa_s->ifname,
1207                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1208                                        ssid->frequency, params->passphrase,
1209                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1210                                        params->persistent_group ?
1211                                        " [PERSISTENT]" : "");
1212                 } else {
1213                         char psk[65];
1214                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1215                                          sizeof(params->psk));
1216                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1217                                        P2P_EVENT_GROUP_STARTED
1218                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1219                                        "go_dev_addr=" MACSTR "%s",
1220                                        wpa_s->ifname,
1221                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1222                                        ssid->frequency, psk,
1223                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1224                                        params->persistent_group ?
1225                                        " [PERSISTENT]" : "");
1226                 }
1227
1228                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1229                 if (params->persistent_group) {
1230                         network_id = wpas_p2p_store_persistent_group(
1231                                 wpa_s->parent, ssid,
1232                                 wpa_s->global->p2p_dev_addr);
1233                         wpas_p2p_add_psk_list(wpa_s, ssid);
1234                 }
1235                 if (network_id < 0)
1236                         network_id = ssid->id;
1237                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1238                 wpas_p2p_cross_connect_setup(wpa_s);
1239                 wpas_p2p_set_group_idle_timeout(wpa_s);
1240
1241                 if (wpa_s->p2p_first_connection_timeout) {
1242                         wpa_dbg(wpa_s, MSG_DEBUG,
1243                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1244                                 wpa_s->p2p_first_connection_timeout);
1245                         wpa_s->p2p_go_group_formation_completed = 0;
1246                         wpa_s->global->p2p_group_formation = wpa_s;
1247                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1248                                              wpa_s->parent, NULL);
1249                         eloop_register_timeout(
1250                                 wpa_s->p2p_first_connection_timeout, 0,
1251                                 wpas_p2p_group_formation_timeout,
1252                                 wpa_s->parent, NULL);
1253                 }
1254
1255                 return;
1256         }
1257
1258         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1259         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1260                                               params->peer_interface_addr)) {
1261                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1262                            "filtering");
1263                 return;
1264         }
1265         if (params->wps_method == WPS_PBC) {
1266                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1267                                           params->peer_device_addr);
1268 #ifdef CONFIG_WPS_NFC
1269         } else if (params->wps_method == WPS_NFC) {
1270                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1271                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1272                     !wpa_s->parent->p2p_oob_dev_pw) {
1273                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1274                         return;
1275                 }
1276                 wpas_ap_wps_add_nfc_pw(
1277                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1278                         wpa_s->parent->p2p_oob_dev_pw,
1279                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1280                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1281 #endif /* CONFIG_WPS_NFC */
1282         } else if (wpa_s->p2p_pin[0])
1283                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1284                                           wpa_s->p2p_pin, NULL, 0, 0);
1285         os_free(wpa_s->go_params);
1286         wpa_s->go_params = NULL;
1287 }
1288
1289
1290 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1291                               struct p2p_go_neg_results *params,
1292                               int group_formation)
1293 {
1294         struct wpa_ssid *ssid;
1295
1296         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1297         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1298                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1299                         "results");
1300                 return;
1301         }
1302
1303         ssid = wpa_config_add_network(wpa_s->conf);
1304         if (ssid == NULL) {
1305                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1306                 return;
1307         }
1308
1309         wpa_s->show_group_started = 0;
1310
1311         wpa_config_set_network_defaults(ssid);
1312         ssid->temporary = 1;
1313         ssid->p2p_group = 1;
1314         ssid->p2p_persistent_group = params->persistent_group;
1315         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1316                 WPAS_MODE_P2P_GO;
1317         ssid->frequency = params->freq;
1318         ssid->ht40 = params->ht40;
1319         ssid->vht = params->vht;
1320         ssid->ssid = os_zalloc(params->ssid_len + 1);
1321         if (ssid->ssid) {
1322                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1323                 ssid->ssid_len = params->ssid_len;
1324         }
1325         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1326         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1327         ssid->proto = WPA_PROTO_RSN;
1328         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1329         if (os_strlen(params->passphrase) > 0) {
1330                 ssid->passphrase = os_strdup(params->passphrase);
1331                 if (ssid->passphrase == NULL) {
1332                         wpa_msg_global(wpa_s, MSG_ERROR,
1333                                        "P2P: Failed to copy passphrase for GO");
1334                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1335                         return;
1336                 }
1337         } else
1338                 ssid->passphrase = NULL;
1339         ssid->psk_set = params->psk_set;
1340         if (ssid->psk_set)
1341                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1342         else if (ssid->passphrase)
1343                 wpa_config_update_psk(ssid);
1344         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1345
1346         wpa_s->ap_configured_cb = p2p_go_configured;
1347         wpa_s->ap_configured_cb_ctx = wpa_s;
1348         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1349         wpa_s->connect_without_scan = ssid;
1350         wpa_s->reassociate = 1;
1351         wpa_s->disconnected = 0;
1352         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1353                 "start GO)");
1354         wpa_supplicant_req_scan(wpa_s, 0, 0);
1355 }
1356
1357
1358 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1359                                   const struct wpa_supplicant *src)
1360 {
1361         struct wpa_config *d;
1362         const struct wpa_config *s;
1363
1364         d = dst->conf;
1365         s = src->conf;
1366
1367 #define C(n) if (s->n) d->n = os_strdup(s->n)
1368         C(device_name);
1369         C(manufacturer);
1370         C(model_name);
1371         C(model_number);
1372         C(serial_number);
1373         C(config_methods);
1374 #undef C
1375
1376         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1377         os_memcpy(d->sec_device_type, s->sec_device_type,
1378                   sizeof(d->sec_device_type));
1379         d->num_sec_device_types = s->num_sec_device_types;
1380
1381         d->p2p_group_idle = s->p2p_group_idle;
1382         d->p2p_intra_bss = s->p2p_intra_bss;
1383         d->persistent_reconnect = s->persistent_reconnect;
1384         d->max_num_sta = s->max_num_sta;
1385         d->pbc_in_m1 = s->pbc_in_m1;
1386         d->ignore_old_scan_res = s->ignore_old_scan_res;
1387         d->beacon_int = s->beacon_int;
1388         d->dtim_period = s->dtim_period;
1389         d->disassoc_low_ack = s->disassoc_low_ack;
1390         d->disable_scan_offload = s->disable_scan_offload;
1391
1392         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1393                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1394                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1395         }
1396 }
1397
1398
1399 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1400                                       char *ifname, size_t len)
1401 {
1402         char *ifname_ptr = wpa_s->ifname;
1403
1404         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1405                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1406                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1407         }
1408
1409         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1410         if (os_strlen(ifname) >= IFNAMSIZ &&
1411             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1412                 /* Try to avoid going over the IFNAMSIZ length limit */
1413                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1414         }
1415 }
1416
1417
1418 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1419                                         enum wpa_driver_if_type type)
1420 {
1421         char ifname[120], force_ifname[120];
1422
1423         if (wpa_s->pending_interface_name[0]) {
1424                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1425                            "- skip creation of a new one");
1426                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1427                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1428                                    "unknown?! ifname='%s'",
1429                                    wpa_s->pending_interface_name);
1430                         return -1;
1431                 }
1432                 return 0;
1433         }
1434
1435         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1436         force_ifname[0] = '\0';
1437
1438         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1439                    ifname);
1440         wpa_s->p2p_group_idx++;
1441
1442         wpa_s->pending_interface_type = type;
1443         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1444                            wpa_s->pending_interface_addr, NULL) < 0) {
1445                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1446                            "interface");
1447                 return -1;
1448         }
1449
1450         if (force_ifname[0]) {
1451                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1452                            force_ifname);
1453                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1454                            sizeof(wpa_s->pending_interface_name));
1455         } else
1456                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1457                            sizeof(wpa_s->pending_interface_name));
1458         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1459                    MACSTR, wpa_s->pending_interface_name,
1460                    MAC2STR(wpa_s->pending_interface_addr));
1461
1462         return 0;
1463 }
1464
1465
1466 static void wpas_p2p_remove_pending_group_interface(
1467         struct wpa_supplicant *wpa_s)
1468 {
1469         if (!wpa_s->pending_interface_name[0] ||
1470             is_zero_ether_addr(wpa_s->pending_interface_addr))
1471                 return; /* No pending virtual interface */
1472
1473         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1474                    wpa_s->pending_interface_name);
1475         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1476                           wpa_s->pending_interface_name);
1477         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1478         wpa_s->pending_interface_name[0] = '\0';
1479 }
1480
1481
1482 static struct wpa_supplicant *
1483 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1484 {
1485         struct wpa_interface iface;
1486         struct wpa_supplicant *group_wpa_s;
1487
1488         if (!wpa_s->pending_interface_name[0]) {
1489                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1490                 if (!wpas_p2p_create_iface(wpa_s))
1491                         return NULL;
1492                 /*
1493                  * Something has forced us to remove the pending interface; try
1494                  * to create a new one and hope for the best that we will get
1495                  * the same local address.
1496                  */
1497                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1498                                                  WPA_IF_P2P_CLIENT) < 0)
1499                         return NULL;
1500         }
1501
1502         os_memset(&iface, 0, sizeof(iface));
1503         iface.ifname = wpa_s->pending_interface_name;
1504         iface.driver = wpa_s->driver->name;
1505         if (wpa_s->conf->ctrl_interface == NULL &&
1506             wpa_s->parent != wpa_s &&
1507             wpa_s->p2p_mgmt &&
1508             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1509                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1510         else
1511                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1512         iface.driver_param = wpa_s->conf->driver_param;
1513         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1514         if (group_wpa_s == NULL) {
1515                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1516                            "wpa_supplicant interface");
1517                 return NULL;
1518         }
1519         wpa_s->pending_interface_name[0] = '\0';
1520         group_wpa_s->parent = wpa_s;
1521         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1522                 P2P_GROUP_INTERFACE_CLIENT;
1523         wpa_s->global->p2p_group_formation = group_wpa_s;
1524
1525         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1526
1527         return group_wpa_s;
1528 }
1529
1530
1531 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1532                                              void *timeout_ctx)
1533 {
1534         struct wpa_supplicant *wpa_s = eloop_ctx;
1535         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1536         wpas_p2p_group_formation_failed(wpa_s);
1537 }
1538
1539
1540 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1541 {
1542         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1543                              wpa_s->parent, NULL);
1544         if (wpa_s->global->p2p)
1545                 p2p_group_formation_failed(wpa_s->global->p2p);
1546         wpas_group_formation_completed(wpa_s, 0);
1547 }
1548
1549
1550 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1551 {
1552         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1553         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1554                              wpa_s->parent, NULL);
1555         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1556                                wpa_s->parent, NULL);
1557         wpa_s->global->p2p_fail_on_wps_complete = 0;
1558 }
1559
1560
1561 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1562 {
1563         if (wpa_s->global->p2p_group_formation != wpa_s)
1564                 return;
1565         /* Speed up group formation timeout since this cannot succeed */
1566         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1567                              wpa_s->parent, NULL);
1568         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1569                                wpa_s->parent, NULL);
1570 }
1571
1572
1573 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1574 {
1575         struct wpa_supplicant *wpa_s = ctx;
1576
1577         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1578                 wpa_drv_cancel_remain_on_channel(wpa_s);
1579                 wpa_s->off_channel_freq = 0;
1580                 wpa_s->roc_waiting_drv_freq = 0;
1581         }
1582
1583         if (res->status) {
1584                 wpa_msg_global(wpa_s, MSG_INFO,
1585                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1586                                res->status);
1587                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1588                 wpas_p2p_remove_pending_group_interface(wpa_s);
1589                 return;
1590         }
1591
1592         if (wpa_s->p2p_go_ht40)
1593                 res->ht40 = 1;
1594         if (wpa_s->p2p_go_vht)
1595                 res->vht = 1;
1596
1597         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1598                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1599                        " wps_method=%s",
1600                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1601                        MAC2STR(res->peer_device_addr),
1602                        MAC2STR(res->peer_interface_addr),
1603                        p2p_wps_method_text(res->wps_method));
1604         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1605
1606         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1607                 struct wpa_ssid *ssid;
1608                 ssid = wpa_config_get_network(wpa_s->conf,
1609                                               wpa_s->p2p_persistent_id);
1610                 if (ssid && ssid->disabled == 2 &&
1611                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1612                         size_t len = os_strlen(ssid->passphrase);
1613                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1614                                    "on requested persistent group");
1615                         os_memcpy(res->passphrase, ssid->passphrase, len);
1616                         res->passphrase[len] = '\0';
1617                 }
1618         }
1619
1620         if (wpa_s->create_p2p_iface) {
1621                 struct wpa_supplicant *group_wpa_s =
1622                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1623                 if (group_wpa_s == NULL) {
1624                         wpas_p2p_remove_pending_group_interface(wpa_s);
1625                         return;
1626                 }
1627                 if (group_wpa_s != wpa_s) {
1628                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1629                                   sizeof(group_wpa_s->p2p_pin));
1630                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1631                 }
1632                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1633                 wpa_s->pending_interface_name[0] = '\0';
1634                 group_wpa_s->p2p_in_provisioning = 1;
1635
1636                 if (res->role_go)
1637                         wpas_start_wps_go(group_wpa_s, res, 1);
1638                 else
1639                         wpas_start_wps_enrollee(group_wpa_s, res);
1640         } else {
1641                 wpa_s->p2p_in_provisioning = 1;
1642                 wpa_s->global->p2p_group_formation = wpa_s;
1643
1644                 if (res->role_go)
1645                         wpas_start_wps_go(wpa_s, res, 1);
1646                 else
1647                         wpas_start_wps_enrollee(ctx, res);
1648         }
1649
1650         wpa_s->p2p_long_listen = 0;
1651         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1652
1653         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1654         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1655                                (res->peer_config_timeout % 100) * 10000,
1656                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1657 }
1658
1659
1660 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1661 {
1662         struct wpa_supplicant *wpa_s = ctx;
1663         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1664                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1665
1666         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1667 }
1668
1669
1670 static void wpas_dev_found(void *ctx, const u8 *addr,
1671                            const struct p2p_peer_info *info,
1672                            int new_device)
1673 {
1674 #ifndef CONFIG_NO_STDOUT_DEBUG
1675         struct wpa_supplicant *wpa_s = ctx;
1676         char devtype[WPS_DEV_TYPE_BUFSIZE];
1677         char *wfd_dev_info_hex = NULL;
1678
1679 #ifdef CONFIG_WIFI_DISPLAY
1680         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1681                                                     WFD_SUBELEM_DEVICE_INFO);
1682 #endif /* CONFIG_WIFI_DISPLAY */
1683
1684         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1685                        " p2p_dev_addr=" MACSTR
1686                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1687                        "dev_capab=0x%x group_capab=0x%x%s%s",
1688                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1689                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1690                                             sizeof(devtype)),
1691                        info->device_name, info->config_methods,
1692                        info->dev_capab, info->group_capab,
1693                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1694                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1695
1696         os_free(wfd_dev_info_hex);
1697 #endif /* CONFIG_NO_STDOUT_DEBUG */
1698
1699         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1700 }
1701
1702
1703 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1704 {
1705         struct wpa_supplicant *wpa_s = ctx;
1706
1707         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1708                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1709
1710         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1711 }
1712
1713
1714 static void wpas_find_stopped(void *ctx)
1715 {
1716         struct wpa_supplicant *wpa_s = ctx;
1717         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1718 }
1719
1720
1721 struct wpas_p2p_listen_work {
1722         unsigned int freq;
1723         unsigned int duration;
1724         struct wpabuf *probe_resp_ie;
1725 };
1726
1727
1728 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1729 {
1730         if (lwork == NULL)
1731                 return;
1732         wpabuf_free(lwork->probe_resp_ie);
1733         os_free(lwork);
1734 }
1735
1736
1737 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1738 {
1739         struct wpas_p2p_listen_work *lwork;
1740
1741         if (!wpa_s->p2p_listen_work)
1742                 return;
1743
1744         lwork = wpa_s->p2p_listen_work->ctx;
1745         wpas_p2p_listen_work_free(lwork);
1746         radio_work_done(wpa_s->p2p_listen_work);
1747         wpa_s->p2p_listen_work = NULL;
1748 }
1749
1750
1751 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1752 {
1753         struct wpa_supplicant *wpa_s = work->wpa_s;
1754         struct wpas_p2p_listen_work *lwork = work->ctx;
1755
1756         if (deinit) {
1757                 if (work->started) {
1758                         wpa_s->p2p_listen_work = NULL;
1759                         wpas_stop_listen(wpa_s);
1760                 }
1761                 wpas_p2p_listen_work_free(lwork);
1762                 return;
1763         }
1764
1765         wpa_s->p2p_listen_work = work;
1766
1767         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1768
1769         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1770                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1771                            "report received Probe Request frames");
1772                 wpas_p2p_listen_work_done(wpa_s);
1773                 return;
1774         }
1775
1776         wpa_s->pending_listen_freq = lwork->freq;
1777         wpa_s->pending_listen_duration = lwork->duration;
1778
1779         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1780         {
1781                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1782                            "to remain on channel (%u MHz) for Listen "
1783                            "state", lwork->freq);
1784                 wpas_p2p_listen_work_done(wpa_s);
1785                 wpa_s->pending_listen_freq = 0;
1786                 return;
1787         }
1788         wpa_s->off_channel_freq = 0;
1789         wpa_s->roc_waiting_drv_freq = lwork->freq;
1790 }
1791
1792
1793 static int wpas_start_listen(void *ctx, unsigned int freq,
1794                              unsigned int duration,
1795                              const struct wpabuf *probe_resp_ie)
1796 {
1797         struct wpa_supplicant *wpa_s = ctx;
1798         struct wpas_p2p_listen_work *lwork;
1799
1800         if (wpa_s->p2p_listen_work) {
1801                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1802                 return -1;
1803         }
1804
1805         lwork = os_zalloc(sizeof(*lwork));
1806         if (lwork == NULL)
1807                 return -1;
1808         lwork->freq = freq;
1809         lwork->duration = duration;
1810         if (probe_resp_ie) {
1811                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1812                 if (lwork->probe_resp_ie == NULL) {
1813                         wpas_p2p_listen_work_free(lwork);
1814                         return -1;
1815                 }
1816         }
1817
1818         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1819                            lwork) < 0) {
1820                 wpas_p2p_listen_work_free(lwork);
1821                 return -1;
1822         }
1823
1824         return 0;
1825 }
1826
1827
1828 static void wpas_stop_listen(void *ctx)
1829 {
1830         struct wpa_supplicant *wpa_s = ctx;
1831         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1832                 wpa_drv_cancel_remain_on_channel(wpa_s);
1833                 wpa_s->off_channel_freq = 0;
1834                 wpa_s->roc_waiting_drv_freq = 0;
1835         }
1836         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1837         wpa_drv_probe_req_report(wpa_s, 0);
1838         wpas_p2p_listen_work_done(wpa_s);
1839 }
1840
1841
1842 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1843 {
1844         struct wpa_supplicant *wpa_s = ctx;
1845         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1846 }
1847
1848
1849 /*
1850  * DNS Header section is used only to calculate compression pointers, so the
1851  * contents of this data does not matter, but the length needs to be reserved
1852  * in the virtual packet.
1853  */
1854 #define DNS_HEADER_LEN 12
1855
1856 /*
1857  * 27-octet in-memory packet from P2P specification containing two implied
1858  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1859  */
1860 #define P2P_SD_IN_MEMORY_LEN 27
1861
1862 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1863                                        u8 **spos, const u8 *end)
1864 {
1865         while (*spos < end) {
1866                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1867                 int len;
1868
1869                 if (val == 1 || val == 2) {
1870                         /* These are reserved values in RFC 1035 */
1871                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1872                                    "sequence starting with 0x%x", val);
1873                         return -1;
1874                 }
1875
1876                 if (val == 3) {
1877                         u16 offset;
1878                         u8 *spos_tmp;
1879
1880                         /* Offset */
1881                         if (*spos + 2 > end) {
1882                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1883                                            "DNS offset field");
1884                                 return -1;
1885                         }
1886
1887                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1888                         if (offset >= *spos - start) {
1889                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1890                                            "pointer offset %u", offset);
1891                                 return -1;
1892                         }
1893
1894                         (*spos) += 2;
1895                         spos_tmp = start + offset;
1896                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1897                                                            &spos_tmp,
1898                                                            *spos - 2);
1899                 }
1900
1901                 /* Label */
1902                 len = (*spos)[0] & 0x3f;
1903                 if (len == 0)
1904                         return 0;
1905
1906                 (*spos)++;
1907                 if (*spos + len > end) {
1908                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1909                                    "sequence - no room for label with length "
1910                                    "%u", len);
1911                         return -1;
1912                 }
1913
1914                 if (*upos + len + 2 > uend)
1915                         return -2;
1916
1917                 os_memcpy(*upos, *spos, len);
1918                 *spos += len;
1919                 *upos += len;
1920                 (*upos)[0] = '.';
1921                 (*upos)++;
1922                 (*upos)[0] = '\0';
1923         }
1924
1925         return 0;
1926 }
1927
1928
1929 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1930  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1931  * not large enough */
1932 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1933                                  size_t msg_len, size_t offset)
1934 {
1935         /* 27-octet in-memory packet from P2P specification */
1936         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1937                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1938         u8 *tmp, *end, *spos;
1939         char *upos, *uend;
1940         int ret = 0;
1941
1942         if (buf_len < 2)
1943                 return -1;
1944         if (offset > msg_len)
1945                 return -1;
1946
1947         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1948         if (tmp == NULL)
1949                 return -1;
1950         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1951         end = spos + msg_len;
1952         spos += offset;
1953
1954         os_memset(tmp, 0, DNS_HEADER_LEN);
1955         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1956         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1957
1958         upos = buf;
1959         uend = buf + buf_len;
1960
1961         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1962         if (ret) {
1963                 os_free(tmp);
1964                 return ret;
1965         }
1966
1967         if (upos == buf) {
1968                 upos[0] = '.';
1969                 upos[1] = '\0';
1970         } else if (upos[-1] == '.')
1971                 upos[-1] = '\0';
1972
1973         os_free(tmp);
1974         return 0;
1975 }
1976
1977
1978 static struct p2p_srv_bonjour *
1979 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1980                              const struct wpabuf *query)
1981 {
1982         struct p2p_srv_bonjour *bsrv;
1983         size_t len;
1984
1985         len = wpabuf_len(query);
1986         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1987                          struct p2p_srv_bonjour, list) {
1988                 if (len == wpabuf_len(bsrv->query) &&
1989                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1990                               len) == 0)
1991                         return bsrv;
1992         }
1993         return NULL;
1994 }
1995
1996
1997 static struct p2p_srv_upnp *
1998 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1999                           const char *service)
2000 {
2001         struct p2p_srv_upnp *usrv;
2002
2003         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2004                          struct p2p_srv_upnp, list) {
2005                 if (version == usrv->version &&
2006                     os_strcmp(service, usrv->service) == 0)
2007                         return usrv;
2008         }
2009         return NULL;
2010 }
2011
2012
2013 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2014                                         u8 srv_trans_id)
2015 {
2016         u8 *len_pos;
2017
2018         if (wpabuf_tailroom(resp) < 5)
2019                 return;
2020
2021         /* Length (to be filled) */
2022         len_pos = wpabuf_put(resp, 2);
2023         wpabuf_put_u8(resp, srv_proto);
2024         wpabuf_put_u8(resp, srv_trans_id);
2025         /* Status Code */
2026         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2027         /* Response Data: empty */
2028         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2029 }
2030
2031
2032 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2033                                 struct wpabuf *resp, u8 srv_trans_id)
2034 {
2035         struct p2p_srv_bonjour *bsrv;
2036         u8 *len_pos;
2037
2038         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2039
2040         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2041                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2042                 return;
2043         }
2044
2045         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2046                          struct p2p_srv_bonjour, list) {
2047                 if (wpabuf_tailroom(resp) <
2048                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2049                         return;
2050                 /* Length (to be filled) */
2051                 len_pos = wpabuf_put(resp, 2);
2052                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2053                 wpabuf_put_u8(resp, srv_trans_id);
2054                 /* Status Code */
2055                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2056                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2057                                   wpabuf_head(bsrv->resp),
2058                                   wpabuf_len(bsrv->resp));
2059                 /* Response Data */
2060                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2061                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2062                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2063                              2);
2064         }
2065 }
2066
2067
2068 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2069                                size_t query_len)
2070 {
2071         char str_rx[256], str_srv[256];
2072
2073         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2074                 return 0; /* Too short to include DNS Type and Version */
2075         if (os_memcmp(query + query_len - 3,
2076                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2077                       3) != 0)
2078                 return 0; /* Mismatch in DNS Type or Version */
2079         if (query_len == wpabuf_len(bsrv->query) &&
2080             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2081                 return 1; /* Binary match */
2082
2083         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2084                                   0))
2085                 return 0; /* Failed to uncompress query */
2086         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2087                                   wpabuf_head(bsrv->query),
2088                                   wpabuf_len(bsrv->query) - 3, 0))
2089                 return 0; /* Failed to uncompress service */
2090
2091         return os_strcmp(str_rx, str_srv) == 0;
2092 }
2093
2094
2095 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2096                                 struct wpabuf *resp, u8 srv_trans_id,
2097                                 const u8 *query, size_t query_len)
2098 {
2099         struct p2p_srv_bonjour *bsrv;
2100         u8 *len_pos;
2101         int matches = 0;
2102
2103         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2104                           query, query_len);
2105         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2106                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2107                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2108                                             srv_trans_id);
2109                 return;
2110         }
2111
2112         if (query_len == 0) {
2113                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2114                 return;
2115         }
2116
2117         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2118                          struct p2p_srv_bonjour, list) {
2119                 if (!match_bonjour_query(bsrv, query, query_len))
2120                         continue;
2121
2122                 if (wpabuf_tailroom(resp) <
2123                     5 + query_len + wpabuf_len(bsrv->resp))
2124                         return;
2125
2126                 matches++;
2127
2128                 /* Length (to be filled) */
2129                 len_pos = wpabuf_put(resp, 2);
2130                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2131                 wpabuf_put_u8(resp, srv_trans_id);
2132
2133                 /* Status Code */
2134                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2135                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2136                                   wpabuf_head(bsrv->resp),
2137                                   wpabuf_len(bsrv->resp));
2138
2139                 /* Response Data */
2140                 wpabuf_put_data(resp, query, query_len); /* Key */
2141                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2142
2143                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2144         }
2145
2146         if (matches == 0) {
2147                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2148                            "available");
2149                 if (wpabuf_tailroom(resp) < 5)
2150                         return;
2151
2152                 /* Length (to be filled) */
2153                 len_pos = wpabuf_put(resp, 2);
2154                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2155                 wpabuf_put_u8(resp, srv_trans_id);
2156
2157                 /* Status Code */
2158                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2159                 /* Response Data: empty */
2160                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2161                              2);
2162         }
2163 }
2164
2165
2166 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2167                              struct wpabuf *resp, u8 srv_trans_id)
2168 {
2169         struct p2p_srv_upnp *usrv;
2170         u8 *len_pos;
2171
2172         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2173
2174         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2175                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2176                 return;
2177         }
2178
2179         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2180                          struct p2p_srv_upnp, list) {
2181                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2182                         return;
2183
2184                 /* Length (to be filled) */
2185                 len_pos = wpabuf_put(resp, 2);
2186                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2187                 wpabuf_put_u8(resp, srv_trans_id);
2188
2189                 /* Status Code */
2190                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2191                 /* Response Data */
2192                 wpabuf_put_u8(resp, usrv->version);
2193                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2194                            usrv->service);
2195                 wpabuf_put_str(resp, usrv->service);
2196                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2197                              2);
2198         }
2199 }
2200
2201
2202 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2203                              struct wpabuf *resp, u8 srv_trans_id,
2204                              const u8 *query, size_t query_len)
2205 {
2206         struct p2p_srv_upnp *usrv;
2207         u8 *len_pos;
2208         u8 version;
2209         char *str;
2210         int count = 0;
2211
2212         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2213                           query, query_len);
2214
2215         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2216                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2217                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2218                                             srv_trans_id);
2219                 return;
2220         }
2221
2222         if (query_len == 0) {
2223                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2224                 return;
2225         }
2226
2227         if (wpabuf_tailroom(resp) < 5)
2228                 return;
2229
2230         /* Length (to be filled) */
2231         len_pos = wpabuf_put(resp, 2);
2232         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2233         wpabuf_put_u8(resp, srv_trans_id);
2234
2235         version = query[0];
2236         str = os_malloc(query_len);
2237         if (str == NULL)
2238                 return;
2239         os_memcpy(str, query + 1, query_len - 1);
2240         str[query_len - 1] = '\0';
2241
2242         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2243                          struct p2p_srv_upnp, list) {
2244                 if (version != usrv->version)
2245                         continue;
2246
2247                 if (os_strcmp(str, "ssdp:all") != 0 &&
2248                     os_strstr(usrv->service, str) == NULL)
2249                         continue;
2250
2251                 if (wpabuf_tailroom(resp) < 2)
2252                         break;
2253                 if (count == 0) {
2254                         /* Status Code */
2255                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2256                         /* Response Data */
2257                         wpabuf_put_u8(resp, version);
2258                 } else
2259                         wpabuf_put_u8(resp, ',');
2260
2261                 count++;
2262
2263                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2264                            usrv->service);
2265                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2266                         break;
2267                 wpabuf_put_str(resp, usrv->service);
2268         }
2269         os_free(str);
2270
2271         if (count == 0) {
2272                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2273                            "available");
2274                 /* Status Code */
2275                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2276                 /* Response Data: empty */
2277         }
2278
2279         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2280 }
2281
2282
2283 #ifdef CONFIG_WIFI_DISPLAY
2284 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2285                             struct wpabuf *resp, u8 srv_trans_id,
2286                             const u8 *query, size_t query_len)
2287 {
2288         const u8 *pos;
2289         u8 role;
2290         u8 *len_pos;
2291
2292         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2293
2294         if (!wpa_s->global->wifi_display) {
2295                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2296                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2297                                             srv_trans_id);
2298                 return;
2299         }
2300
2301         if (query_len < 1) {
2302                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2303                            "Role");
2304                 return;
2305         }
2306
2307         if (wpabuf_tailroom(resp) < 5)
2308                 return;
2309
2310         pos = query;
2311         role = *pos++;
2312         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2313
2314         /* TODO: role specific handling */
2315
2316         /* Length (to be filled) */
2317         len_pos = wpabuf_put(resp, 2);
2318         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2319         wpabuf_put_u8(resp, srv_trans_id);
2320         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2321
2322         while (pos < query + query_len) {
2323                 if (*pos < MAX_WFD_SUBELEMS &&
2324                     wpa_s->global->wfd_subelem[*pos] &&
2325                     wpabuf_tailroom(resp) >=
2326                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2327                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2328                                    "subelement %u", *pos);
2329                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2330                 }
2331                 pos++;
2332         }
2333
2334         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2335 }
2336 #endif /* CONFIG_WIFI_DISPLAY */
2337
2338
2339 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2340                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2341 {
2342         struct wpa_supplicant *wpa_s = ctx;
2343         const u8 *pos = tlvs;
2344         const u8 *end = tlvs + tlvs_len;
2345         const u8 *tlv_end;
2346         u16 slen;
2347         struct wpabuf *resp;
2348         u8 srv_proto, srv_trans_id;
2349         size_t buf_len;
2350         char *buf;
2351
2352         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2353                     tlvs, tlvs_len);
2354         buf_len = 2 * tlvs_len + 1;
2355         buf = os_malloc(buf_len);
2356         if (buf) {
2357                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2358                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2359                              MACSTR " %u %u %s",
2360                              freq, MAC2STR(sa), dialog_token, update_indic,
2361                              buf);
2362                 os_free(buf);
2363         }
2364
2365         if (wpa_s->p2p_sd_over_ctrl_iface) {
2366                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2367                                            update_indic, tlvs, tlvs_len);
2368                 return; /* to be processed by an external program */
2369         }
2370
2371         resp = wpabuf_alloc(10000);
2372         if (resp == NULL)
2373                 return;
2374
2375         while (pos + 1 < end) {
2376                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2377                 slen = WPA_GET_LE16(pos);
2378                 pos += 2;
2379                 if (pos + slen > end || slen < 2) {
2380                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2381                                    "length");
2382                         wpabuf_free(resp);
2383                         return;
2384                 }
2385                 tlv_end = pos + slen;
2386
2387                 srv_proto = *pos++;
2388                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2389                            srv_proto);
2390                 srv_trans_id = *pos++;
2391                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2392                            srv_trans_id);
2393
2394                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2395                             pos, tlv_end - pos);
2396
2397
2398                 if (wpa_s->force_long_sd) {
2399                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2400                                    "response");
2401                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2402                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2403                         goto done;
2404                 }
2405
2406                 switch (srv_proto) {
2407                 case P2P_SERV_ALL_SERVICES:
2408                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2409                                    "for all services");
2410                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2411                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2412                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2413                                            "discovery protocols available");
2414                                 wpas_sd_add_proto_not_avail(
2415                                         resp, P2P_SERV_ALL_SERVICES,
2416                                         srv_trans_id);
2417                                 break;
2418                         }
2419                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2420                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2421                         break;
2422                 case P2P_SERV_BONJOUR:
2423                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2424                                             pos, tlv_end - pos);
2425                         break;
2426                 case P2P_SERV_UPNP:
2427                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2428                                          pos, tlv_end - pos);
2429                         break;
2430 #ifdef CONFIG_WIFI_DISPLAY
2431                 case P2P_SERV_WIFI_DISPLAY:
2432                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2433                                         pos, tlv_end - pos);
2434                         break;
2435 #endif /* CONFIG_WIFI_DISPLAY */
2436                 default:
2437                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2438                                    "protocol %u", srv_proto);
2439                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2440                                                     srv_trans_id);
2441                         break;
2442                 }
2443
2444                 pos = tlv_end;
2445         }
2446
2447 done:
2448         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2449                                    update_indic, tlvs, tlvs_len);
2450
2451         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2452
2453         wpabuf_free(resp);
2454 }
2455
2456
2457 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2458                              const u8 *tlvs, size_t tlvs_len)
2459 {
2460         struct wpa_supplicant *wpa_s = ctx;
2461         const u8 *pos = tlvs;
2462         const u8 *end = tlvs + tlvs_len;
2463         const u8 *tlv_end;
2464         u16 slen;
2465         size_t buf_len;
2466         char *buf;
2467
2468         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2469                     tlvs, tlvs_len);
2470         if (tlvs_len > 1500) {
2471                 /* TODO: better way for handling this */
2472                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2473                              P2P_EVENT_SERV_DISC_RESP MACSTR
2474                              " %u <long response: %u bytes>",
2475                              MAC2STR(sa), update_indic,
2476                              (unsigned int) tlvs_len);
2477         } else {
2478                 buf_len = 2 * tlvs_len + 1;
2479                 buf = os_malloc(buf_len);
2480                 if (buf) {
2481                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2482                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2483                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2484                                      MAC2STR(sa), update_indic, buf);
2485                         os_free(buf);
2486                 }
2487         }
2488
2489         while (pos < end) {
2490                 u8 srv_proto, srv_trans_id, status;
2491
2492                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2493                 slen = WPA_GET_LE16(pos);
2494                 pos += 2;
2495                 if (pos + slen > end || slen < 3) {
2496                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2497                                    "length");
2498                         return;
2499                 }
2500                 tlv_end = pos + slen;
2501
2502                 srv_proto = *pos++;
2503                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2504                            srv_proto);
2505                 srv_trans_id = *pos++;
2506                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2507                            srv_trans_id);
2508                 status = *pos++;
2509                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2510                            status);
2511
2512                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2513                             pos, tlv_end - pos);
2514
2515                 pos = tlv_end;
2516         }
2517
2518         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2519 }
2520
2521
2522 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2523                         const struct wpabuf *tlvs)
2524 {
2525         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2526                 return 0;
2527         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2528 }
2529
2530
2531 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2532                              u8 version, const char *query)
2533 {
2534         struct wpabuf *tlvs;
2535         u64 ret;
2536
2537         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2538         if (tlvs == NULL)
2539                 return 0;
2540         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2541         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2542         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2543         wpabuf_put_u8(tlvs, version);
2544         wpabuf_put_str(tlvs, query);
2545         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2546         wpabuf_free(tlvs);
2547         return ret;
2548 }
2549
2550
2551 #ifdef CONFIG_WIFI_DISPLAY
2552
2553 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2554                                    const struct wpabuf *tlvs)
2555 {
2556         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2557                 return 0;
2558         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2559 }
2560
2561
2562 #define MAX_WFD_SD_SUBELEMS 20
2563
2564 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2565                                 const char *subelems)
2566 {
2567         u8 *len;
2568         const char *pos;
2569         int val;
2570         int count = 0;
2571
2572         len = wpabuf_put(tlvs, 2);
2573         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2574         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2575
2576         wpabuf_put_u8(tlvs, role);
2577
2578         pos = subelems;
2579         while (*pos) {
2580                 val = atoi(pos);
2581                 if (val >= 0 && val < 256) {
2582                         wpabuf_put_u8(tlvs, val);
2583                         count++;
2584                         if (count == MAX_WFD_SD_SUBELEMS)
2585                                 break;
2586                 }
2587                 pos = os_strchr(pos + 1, ',');
2588                 if (pos == NULL)
2589                         break;
2590                 pos++;
2591         }
2592
2593         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2594 }
2595
2596
2597 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2598                                      const u8 *dst, const char *role)
2599 {
2600         struct wpabuf *tlvs;
2601         u64 ret;
2602         const char *subelems;
2603         u8 id = 1;
2604
2605         subelems = os_strchr(role, ' ');
2606         if (subelems == NULL)
2607                 return 0;
2608         subelems++;
2609
2610         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2611         if (tlvs == NULL)
2612                 return 0;
2613
2614         if (os_strstr(role, "[source]"))
2615                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2616         if (os_strstr(role, "[pri-sink]"))
2617                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2618         if (os_strstr(role, "[sec-sink]"))
2619                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2620         if (os_strstr(role, "[source+sink]"))
2621                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2622
2623         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2624         wpabuf_free(tlvs);
2625         return ret;
2626 }
2627
2628 #endif /* CONFIG_WIFI_DISPLAY */
2629
2630
2631 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2632 {
2633         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2634                 return -1;
2635         return p2p_sd_cancel_request(wpa_s->global->p2p,
2636                                      (void *) (uintptr_t) req);
2637 }
2638
2639
2640 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2641                           const u8 *dst, u8 dialog_token,
2642                           const struct wpabuf *resp_tlvs)
2643 {
2644         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2645                 return;
2646         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2647                         resp_tlvs);
2648 }
2649
2650
2651 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2652 {
2653         if (wpa_s->global->p2p)
2654                 p2p_sd_service_update(wpa_s->global->p2p);
2655 }
2656
2657
2658 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2659 {
2660         dl_list_del(&bsrv->list);
2661         wpabuf_free(bsrv->query);
2662         wpabuf_free(bsrv->resp);
2663         os_free(bsrv);
2664 }
2665
2666
2667 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2668 {
2669         dl_list_del(&usrv->list);
2670         os_free(usrv->service);
2671         os_free(usrv);
2672 }
2673
2674
2675 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2676 {
2677         struct p2p_srv_bonjour *bsrv, *bn;
2678         struct p2p_srv_upnp *usrv, *un;
2679
2680         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2681                               struct p2p_srv_bonjour, list)
2682                 wpas_p2p_srv_bonjour_free(bsrv);
2683
2684         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2685                               struct p2p_srv_upnp, list)
2686                 wpas_p2p_srv_upnp_free(usrv);
2687
2688         wpas_p2p_sd_service_update(wpa_s);
2689 }
2690
2691
2692 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2693                                  struct wpabuf *query, struct wpabuf *resp)
2694 {
2695         struct p2p_srv_bonjour *bsrv;
2696
2697         bsrv = os_zalloc(sizeof(*bsrv));
2698         if (bsrv == NULL)
2699                 return -1;
2700         bsrv->query = query;
2701         bsrv->resp = resp;
2702         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2703
2704         wpas_p2p_sd_service_update(wpa_s);
2705         return 0;
2706 }
2707
2708
2709 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2710                                  const struct wpabuf *query)
2711 {
2712         struct p2p_srv_bonjour *bsrv;
2713
2714         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2715         if (bsrv == NULL)
2716                 return -1;
2717         wpas_p2p_srv_bonjour_free(bsrv);
2718         wpas_p2p_sd_service_update(wpa_s);
2719         return 0;
2720 }
2721
2722
2723 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2724                               const char *service)
2725 {
2726         struct p2p_srv_upnp *usrv;
2727
2728         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2729                 return 0; /* Already listed */
2730         usrv = os_zalloc(sizeof(*usrv));
2731         if (usrv == NULL)
2732                 return -1;
2733         usrv->version = version;
2734         usrv->service = os_strdup(service);
2735         if (usrv->service == NULL) {
2736                 os_free(usrv);
2737                 return -1;
2738         }
2739         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2740
2741         wpas_p2p_sd_service_update(wpa_s);
2742         return 0;
2743 }
2744
2745
2746 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2747                               const char *service)
2748 {
2749         struct p2p_srv_upnp *usrv;
2750
2751         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2752         if (usrv == NULL)
2753                 return -1;
2754         wpas_p2p_srv_upnp_free(usrv);
2755         wpas_p2p_sd_service_update(wpa_s);
2756         return 0;
2757 }
2758
2759
2760 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2761                                          const u8 *peer, const char *params,
2762                                          unsigned int generated_pin)
2763 {
2764         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2765                        " %08d%s", MAC2STR(peer), generated_pin, params);
2766 }
2767
2768
2769 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2770                                         const u8 *peer, const char *params)
2771 {
2772         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2773                        "%s", MAC2STR(peer), params);
2774 }
2775
2776
2777 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2778                                const u8 *dev_addr, const u8 *pri_dev_type,
2779                                const char *dev_name, u16 supp_config_methods,
2780                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2781                                size_t group_id_len)
2782 {
2783         struct wpa_supplicant *wpa_s = ctx;
2784         char devtype[WPS_DEV_TYPE_BUFSIZE];
2785         char params[300];
2786         u8 empty_dev_type[8];
2787         unsigned int generated_pin = 0;
2788         struct wpa_supplicant *group = NULL;
2789
2790         if (group_id) {
2791                 for (group = wpa_s->global->ifaces; group; group = group->next)
2792                 {
2793                         struct wpa_ssid *s = group->current_ssid;
2794                         if (s != NULL &&
2795                             s->mode == WPAS_MODE_P2P_GO &&
2796                             group_id_len - ETH_ALEN == s->ssid_len &&
2797                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2798                                       s->ssid_len) == 0)
2799                                 break;
2800                 }
2801         }
2802
2803         if (pri_dev_type == NULL) {
2804                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2805                 pri_dev_type = empty_dev_type;
2806         }
2807         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2808                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2809                     "dev_capab=0x%x group_capab=0x%x%s%s",
2810                     MAC2STR(dev_addr),
2811                     wps_dev_type_bin2str(pri_dev_type, devtype,
2812                                          sizeof(devtype)),
2813                     dev_name, supp_config_methods, dev_capab, group_capab,
2814                     group ? " group=" : "",
2815                     group ? group->ifname : "");
2816         params[sizeof(params) - 1] = '\0';
2817
2818         if (config_methods & WPS_CONFIG_DISPLAY) {
2819                 generated_pin = wps_generate_pin();
2820                 wpas_prov_disc_local_display(wpa_s, peer, params,
2821                                              generated_pin);
2822         } else if (config_methods & WPS_CONFIG_KEYPAD)
2823                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2824         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2825                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2826                                MACSTR "%s", MAC2STR(peer), params);
2827
2828         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2829                                             P2P_PROV_DISC_SUCCESS,
2830                                             config_methods, generated_pin);
2831 }
2832
2833
2834 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2835 {
2836         struct wpa_supplicant *wpa_s = ctx;
2837         unsigned int generated_pin = 0;
2838         char params[20];
2839
2840         if (wpa_s->pending_pd_before_join &&
2841             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2842              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2843                 wpa_s->pending_pd_before_join = 0;
2844                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2845                            "join-existing-group operation");
2846                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2847                 return;
2848         }
2849
2850         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2851             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2852                 os_snprintf(params, sizeof(params), " peer_go=%d",
2853                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2854         else
2855                 params[0] = '\0';
2856
2857         if (config_methods & WPS_CONFIG_DISPLAY)
2858                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2859         else if (config_methods & WPS_CONFIG_KEYPAD) {
2860                 generated_pin = wps_generate_pin();
2861                 wpas_prov_disc_local_display(wpa_s, peer, params,
2862                                              generated_pin);
2863         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2864                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2865                                MACSTR "%s", MAC2STR(peer), params);
2866
2867         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2868                                             P2P_PROV_DISC_SUCCESS,
2869                                             config_methods, generated_pin);
2870 }
2871
2872
2873 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2874                                 enum p2p_prov_disc_status status)
2875 {
2876         struct wpa_supplicant *wpa_s = ctx;
2877
2878         if (wpa_s->p2p_fallback_to_go_neg) {
2879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2880                         "failed - fall back to GO Negotiation");
2881                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2882                 return;
2883         }
2884
2885         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2886                 wpa_s->pending_pd_before_join = 0;
2887                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2888                            "join-existing-group operation (no ACK for PD "
2889                            "Req attempts)");
2890                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2891                 return;
2892         }
2893
2894         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2895                        " p2p_dev_addr=" MACSTR " status=%d",
2896                        MAC2STR(peer), status);
2897
2898         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2899                                             status, 0, 0);
2900 }
2901
2902
2903 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2904 {
2905         if (channels == NULL)
2906                 return 1; /* Assume no restrictions */
2907         return p2p_channels_includes_freq(channels, freq);
2908
2909 }
2910
2911
2912 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2913                                   const u8 *go_dev_addr, const u8 *ssid,
2914                                   size_t ssid_len, int *go, u8 *group_bssid,
2915                                   int *force_freq, int persistent_group,
2916                                   const struct p2p_channels *channels,
2917                                   int dev_pw_id)
2918 {
2919         struct wpa_supplicant *wpa_s = ctx;
2920         struct wpa_ssid *s;
2921         int res;
2922         struct wpa_supplicant *grp;
2923
2924         if (!persistent_group) {
2925                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2926                            " to join an active group (SSID: %s)",
2927                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2928                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2929                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2930                      == 0 ||
2931                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2932                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2933                                    "authorized invitation");
2934                         goto accept_inv;
2935                 }
2936
2937 #ifdef CONFIG_WPS_NFC
2938                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
2939                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
2940                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2941                         wpa_s->parent->p2p_wps_method = WPS_NFC;
2942                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
2943                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
2944                                   go_dev_addr, ETH_ALEN);
2945                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
2946                                   bssid, ETH_ALEN);
2947                         goto accept_inv;
2948                 }
2949 #endif /* CONFIG_WPS_NFC */
2950
2951                 /*
2952                  * Do not accept the invitation automatically; notify user and
2953                  * request approval.
2954                  */
2955                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2956         }
2957
2958         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2959         if (grp) {
2960                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2961                            "running persistent group");
2962                 if (*go)
2963                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2964                 goto accept_inv;
2965         }
2966
2967         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2968             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2969                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2970                            "invitation to re-invoke a persistent group");
2971         } else if (!wpa_s->conf->persistent_reconnect)
2972                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2973
2974         for (s = wpa_s->conf->ssid; s; s = s->next) {
2975                 if (s->disabled == 2 &&
2976                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2977                     s->ssid_len == ssid_len &&
2978                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2979                         break;
2980         }
2981
2982         if (!s) {
2983                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2984                            " requested reinvocation of an unknown group",
2985                            MAC2STR(sa));
2986                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2987         }
2988
2989         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2990                 *go = 1;
2991                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2992                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2993                                    "interface is already in use - reject "
2994                                    "invitation");
2995                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2996                 }
2997                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2998         } else if (s->mode == WPAS_MODE_P2P_GO) {
2999                 *go = 1;
3000                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3001                 {
3002                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3003                                    "interface address for the group");
3004                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3005                 }
3006                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3007                           ETH_ALEN);
3008         }
3009
3010 accept_inv:
3011         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3012
3013         /* Get one of the frequencies currently in use */
3014         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
3015                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3016                 wpas_p2p_set_own_freq_preference(wpa_s, res);
3017
3018                 if (wpa_s->num_multichan_concurrent < 2 ||
3019                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3020                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3021                         *force_freq = res;
3022                 }
3023         }
3024
3025         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3026             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3027                 if (*go == 0) {
3028                         /* We are the client */
3029                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3030                                    "running a GO but we are capable of MCC, "
3031                                    "figure out the best channel to use");
3032                         *force_freq = 0;
3033                 } else if (!freq_included(channels, *force_freq)) {
3034                         /* We are the GO, and *force_freq is not in the
3035                          * intersection */
3036                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3037                                    "in intersection but we are capable of MCC, "
3038                                    "figure out the best channel to use",
3039                                    *force_freq);
3040                         *force_freq = 0;
3041                 }
3042         }
3043
3044         return P2P_SC_SUCCESS;
3045 }
3046
3047
3048 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3049                                      const u8 *ssid, size_t ssid_len,
3050                                      const u8 *go_dev_addr, u8 status,
3051                                      int op_freq)
3052 {
3053         struct wpa_supplicant *wpa_s = ctx;
3054         struct wpa_ssid *s;
3055
3056         for (s = wpa_s->conf->ssid; s; s = s->next) {
3057                 if (s->disabled == 2 &&
3058                     s->ssid_len == ssid_len &&
3059                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3060                         break;
3061         }
3062
3063         if (status == P2P_SC_SUCCESS) {
3064                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3065                            " was accepted; op_freq=%d MHz, SSID=%s",
3066                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3067                 if (s) {
3068                         int go = s->mode == WPAS_MODE_P2P_GO;
3069                         wpas_p2p_group_add_persistent(
3070                                 wpa_s, s, go, 0, go ? op_freq : 0, 0, 0, NULL,
3071                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3072                 } else if (bssid) {
3073                         wpa_s->user_initiated_pd = 0;
3074                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3075                                       wpa_s->p2p_wps_method, 0, op_freq,
3076                                       ssid, ssid_len);
3077                 }
3078                 return;
3079         }
3080
3081         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3082                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3083                            " was rejected (status %u)", MAC2STR(sa), status);
3084                 return;
3085         }
3086
3087         if (!s) {
3088                 if (bssid) {
3089                         wpa_msg_global(wpa_s, MSG_INFO,
3090                                        P2P_EVENT_INVITATION_RECEIVED
3091                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3092                                        " bssid=" MACSTR " unknown-network",
3093                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3094                                        MAC2STR(bssid));
3095                 } else {
3096                         wpa_msg_global(wpa_s, MSG_INFO,
3097                                        P2P_EVENT_INVITATION_RECEIVED
3098                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3099                                        " unknown-network",
3100                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3101                 }
3102                 return;
3103         }
3104
3105         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3106                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3107                                "sa=" MACSTR " persistent=%d freq=%d",
3108                                MAC2STR(sa), s->id, op_freq);
3109         } else {
3110                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3111                                "sa=" MACSTR " persistent=%d",
3112                                MAC2STR(sa), s->id);
3113         }
3114 }
3115
3116
3117 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3118                                         struct wpa_ssid *ssid,
3119                                         const u8 *peer, int inv)
3120 {
3121         size_t i;
3122
3123         if (ssid == NULL)
3124                 return;
3125
3126         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3127                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3128                               ETH_ALEN) == 0)
3129                         break;
3130         }
3131         if (i >= ssid->num_p2p_clients) {
3132                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3133                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3134                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3135                                    "due to invitation result", ssid->id);
3136                         wpas_notify_network_removed(wpa_s, ssid);
3137                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3138                         return;
3139                 }
3140                 return; /* Peer not found in client list */
3141         }
3142
3143         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3144                    "group %d client list%s",
3145                    MAC2STR(peer), ssid->id,
3146                    inv ? " due to invitation result" : "");
3147         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3148                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3149                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3150         ssid->num_p2p_clients--;
3151         if (wpa_s->parent->conf->update_config &&
3152             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3153                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3154 }
3155
3156
3157 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3158                                           const u8 *peer)
3159 {
3160         struct wpa_ssid *ssid;
3161
3162         wpa_s = wpa_s->global->p2p_invite_group;
3163         if (wpa_s == NULL)
3164                 return; /* No known invitation group */
3165         ssid = wpa_s->current_ssid;
3166         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3167             !ssid->p2p_persistent_group)
3168                 return; /* Not operating as a GO in persistent group */
3169         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3170                                        ssid->ssid, ssid->ssid_len);
3171         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3172 }
3173
3174
3175 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3176                                    const struct p2p_channels *channels,
3177                                    const u8 *peer, int neg_freq)
3178 {
3179         struct wpa_supplicant *wpa_s = ctx;
3180         struct wpa_ssid *ssid;
3181
3182         if (bssid) {
3183                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3184                                "status=%d " MACSTR,
3185                                status, MAC2STR(bssid));
3186         } else {
3187                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3188                                "status=%d ", status);
3189         }
3190         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3191
3192         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3193                    status, MAC2STR(peer));
3194         if (wpa_s->pending_invite_ssid_id == -1) {
3195                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3196                         wpas_remove_persistent_client(wpa_s, peer);
3197                 return; /* Invitation to active group */
3198         }
3199
3200         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3201                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3202                            "invitation exchange to indicate readiness for "
3203                            "re-invocation");
3204         }
3205
3206         if (status != P2P_SC_SUCCESS) {
3207                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3208                         ssid = wpa_config_get_network(
3209                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3210                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3211                 }
3212                 wpas_p2p_remove_pending_group_interface(wpa_s);
3213                 return;
3214         }
3215
3216         ssid = wpa_config_get_network(wpa_s->conf,
3217                                       wpa_s->pending_invite_ssid_id);
3218         if (ssid == NULL) {
3219                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3220                            "data matching with invitation");
3221                 return;
3222         }
3223
3224         /*
3225          * The peer could have missed our ctrl::ack frame for Invitation
3226          * Response and continue retransmitting the frame. To reduce the
3227          * likelihood of the peer not getting successful TX status for the
3228          * Invitation Response frame, wait a short time here before starting
3229          * the persistent group so that we will remain on the current channel to
3230          * acknowledge any possible retransmission from the peer.
3231          */
3232         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3233                 "starting persistent group");
3234         os_sleep(0, 50000);
3235
3236         wpas_p2p_group_add_persistent(wpa_s, ssid,
3237                                       ssid->mode == WPAS_MODE_P2P_GO,
3238                                       wpa_s->p2p_persistent_go_freq,
3239                                       neg_freq,
3240                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3241                                       channels,
3242                                       ssid->mode == WPAS_MODE_P2P_GO ?
3243                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3244                                       0);
3245 }
3246
3247
3248 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3249                                     unsigned int freq)
3250 {
3251         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3252                 return 1;
3253         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3254 }
3255
3256
3257 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3258 {
3259         reg->channel[reg->channels] = chan;
3260         reg->channels++;
3261 }
3262
3263
3264 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3265                                      struct p2p_channels *chan,
3266                                      struct p2p_channels *cli_chan)
3267 {
3268         int i, cla = 0;
3269
3270         os_memset(cli_chan, 0, sizeof(*cli_chan));
3271
3272         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3273                    "band");
3274
3275         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3276         chan->reg_class[cla].reg_class = 81;
3277         chan->reg_class[cla].channels = 0;
3278         for (i = 0; i < 11; i++) {
3279                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3280                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3281         }
3282         if (chan->reg_class[cla].channels)
3283                 cla++;
3284
3285         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3286                    "band");
3287
3288         /* Operating class 115 - 5 GHz, channels 36-48 */
3289         chan->reg_class[cla].reg_class = 115;
3290         chan->reg_class[cla].channels = 0;
3291         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3292                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3293         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3294                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3295         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3296                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3297         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3298                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3299         if (chan->reg_class[cla].channels)
3300                 cla++;
3301
3302         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3303                    "band");
3304
3305         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3306         chan->reg_class[cla].reg_class = 124;
3307         chan->reg_class[cla].channels = 0;
3308         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3309                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3312         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3313                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3314         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3315                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3316         if (chan->reg_class[cla].channels)
3317                 cla++;
3318
3319         chan->reg_classes = cla;
3320         return 0;
3321 }
3322
3323
3324 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3325                                           u16 num_modes,
3326                                           enum hostapd_hw_mode mode)
3327 {
3328         u16 i;
3329
3330         for (i = 0; i < num_modes; i++) {
3331                 if (modes[i].mode == mode)
3332                         return &modes[i];
3333         }
3334
3335         return NULL;
3336 }
3337
3338
3339 enum chan_allowed {
3340         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3341 };
3342
3343 static int has_channel(struct wpa_global *global,
3344                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3345 {
3346         int i;
3347         unsigned int freq;
3348
3349         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3350                 chan * 5;
3351         if (wpas_p2p_disallowed_freq(global, freq))
3352                 return NOT_ALLOWED;
3353
3354         for (i = 0; i < mode->num_channels; i++) {
3355                 if (mode->channels[i].chan == chan) {
3356                         if (flags)
3357                                 *flags = mode->channels[i].flag;
3358                         if (mode->channels[i].flag &
3359                             (HOSTAPD_CHAN_DISABLED |
3360                              HOSTAPD_CHAN_RADAR))
3361                                 return NOT_ALLOWED;
3362                         if (mode->channels[i].flag &
3363                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3364                              HOSTAPD_CHAN_NO_IBSS))
3365                                 return PASSIVE_ONLY;
3366                         return ALLOWED;
3367                 }
3368         }
3369
3370         return NOT_ALLOWED;
3371 }
3372
3373
3374 struct p2p_oper_class_map {
3375         enum hostapd_hw_mode mode;
3376         u8 op_class;
3377         u8 min_chan;
3378         u8 max_chan;
3379         u8 inc;
3380         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3381 };
3382
3383 static struct p2p_oper_class_map op_class[] = {
3384         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3385 #if 0 /* Do not enable HT40 on 2 GHz for now */
3386         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3387         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3388 #endif
3389         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3390         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3391         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3392         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3393         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3394         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3395
3396         /*
3397          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3398          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3399          * 80 MHz, but currently use the following definition for simplicity
3400          * (these center frequencies are not actual channels, which makes
3401          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3402          * removing invalid channels.
3403          */
3404         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3405         { -1, 0, 0, 0, 0, BW20 }
3406 };
3407
3408
3409 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3410                                      struct hostapd_hw_modes *mode,
3411                                      u8 channel)
3412 {
3413         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3414         unsigned int i;
3415
3416         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3417                 return 0;
3418
3419         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3420                 /*
3421                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3422                  * so the center channel is 6 channels away from the start/end.
3423                  */
3424                 if (channel >= center_channels[i] - 6 &&
3425                     channel <= center_channels[i] + 6)
3426                         return center_channels[i];
3427
3428         return 0;
3429 }
3430
3431
3432 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3433                                                struct hostapd_hw_modes *mode,
3434                                                u8 channel, u8 bw)
3435 {
3436         u8 center_chan;
3437         int i, flags;
3438         enum chan_allowed res, ret = ALLOWED;
3439
3440         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3441         if (!center_chan)
3442                 return NOT_ALLOWED;
3443         if (center_chan >= 58 && center_chan <= 138)
3444                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3445
3446         /* check all the channels are available */
3447         for (i = 0; i < 4; i++) {
3448                 int adj_chan = center_chan - 6 + i * 4;
3449
3450                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3451                 if (res == NOT_ALLOWED)
3452                         return NOT_ALLOWED;
3453                 if (res == PASSIVE_ONLY)
3454                         ret = PASSIVE_ONLY;
3455
3456                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3457                         return NOT_ALLOWED;
3458                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3459                         return NOT_ALLOWED;
3460                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3461                         return NOT_ALLOWED;
3462                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3463                         return NOT_ALLOWED;
3464         }
3465
3466         return ret;
3467 }
3468
3469
3470 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3471                                                  struct hostapd_hw_modes *mode,
3472                                                  u8 channel, u8 bw)
3473 {
3474         int flag = 0;
3475         enum chan_allowed res, res2;
3476
3477         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3478         if (bw == BW40MINUS) {
3479                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3480                         return NOT_ALLOWED;
3481                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3482         } else if (bw == BW40PLUS) {
3483                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3484                         return NOT_ALLOWED;
3485                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3486         } else if (bw == BW80) {
3487                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3488         }
3489
3490         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3491                 return NOT_ALLOWED;
3492         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3493                 return PASSIVE_ONLY;
3494         return res;
3495 }
3496
3497
3498 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3499                                    struct p2p_channels *chan,
3500                                    struct p2p_channels *cli_chan)
3501 {
3502         struct hostapd_hw_modes *mode;
3503         int cla, op, cli_cla;
3504
3505         if (wpa_s->hw.modes == NULL) {
3506                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3507                            "of all supported channels; assume dualband "
3508                            "support");
3509                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3510         }
3511
3512         cla = cli_cla = 0;
3513
3514         for (op = 0; op_class[op].op_class; op++) {
3515                 struct p2p_oper_class_map *o = &op_class[op];
3516                 u8 ch;
3517                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3518
3519                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3520                 if (mode == NULL)
3521                         continue;
3522                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3523                         enum chan_allowed res;
3524                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3525                         if (res == ALLOWED) {
3526                                 if (reg == NULL) {
3527                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3528                                                    o->op_class);
3529                                         reg = &chan->reg_class[cla];
3530                                         cla++;
3531                                         reg->reg_class = o->op_class;
3532                                 }
3533                                 reg->channel[reg->channels] = ch;
3534                                 reg->channels++;
3535                         } else if (res == PASSIVE_ONLY &&
3536                                    wpa_s->conf->p2p_add_cli_chan) {
3537                                 if (cli_reg == NULL) {
3538                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3539                                                    o->op_class);
3540                                         cli_reg = &cli_chan->reg_class[cli_cla];
3541                                         cli_cla++;
3542                                         cli_reg->reg_class = o->op_class;
3543                                 }
3544                                 cli_reg->channel[cli_reg->channels] = ch;
3545                                 cli_reg->channels++;
3546                         }
3547                 }
3548                 if (reg) {
3549                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3550                                     reg->channel, reg->channels);
3551                 }
3552                 if (cli_reg) {
3553                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3554                                     cli_reg->channel, cli_reg->channels);
3555                 }
3556         }
3557
3558         chan->reg_classes = cla;
3559         cli_chan->reg_classes = cli_cla;
3560
3561         return 0;
3562 }
3563
3564
3565 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3566                            struct hostapd_hw_modes *mode, u8 channel)
3567 {
3568         int op;
3569         enum chan_allowed ret;
3570
3571         for (op = 0; op_class[op].op_class; op++) {
3572                 struct p2p_oper_class_map *o = &op_class[op];
3573                 u8 ch;
3574
3575                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3576                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3577                             o->bw == BW20 || ch != channel)
3578                                 continue;
3579                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3580                         if (ret == ALLOWED)
3581                                 return (o->bw == BW40MINUS) ? -1 : 1;
3582                 }
3583         }
3584         return 0;
3585 }
3586
3587
3588 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3589                               struct hostapd_hw_modes *mode, u8 channel)
3590 {
3591         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3592                 return 0;
3593
3594         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3595 }
3596
3597
3598 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3599                         size_t buf_len)
3600 {
3601         struct wpa_supplicant *wpa_s = ctx;
3602
3603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3604                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3605                         break;
3606         }
3607         if (wpa_s == NULL)
3608                 return -1;
3609
3610         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3611 }
3612
3613
3614 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3615 {
3616         struct wpa_supplicant *wpa_s = ctx;
3617
3618         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3619                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3620                 if (ssid == NULL)
3621                         continue;
3622                 if (ssid->mode != WPAS_MODE_INFRA)
3623                         continue;
3624                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3625                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3626                         continue;
3627                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3628                         return 1;
3629         }
3630
3631         return 0;
3632 }
3633
3634
3635 static int wpas_is_concurrent_session_active(void *ctx)
3636 {
3637         struct wpa_supplicant *wpa_s = ctx;
3638         struct wpa_supplicant *ifs;
3639
3640         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3641                 if (ifs == wpa_s)
3642                         continue;
3643                 if (ifs->wpa_state > WPA_ASSOCIATED)
3644                         return 1;
3645         }
3646         return 0;
3647 }
3648
3649
3650 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3651 {
3652         struct wpa_supplicant *wpa_s = ctx;
3653         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3654 }
3655
3656
3657 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3658 {
3659         struct wpa_interface iface;
3660         struct wpa_supplicant *p2pdev_wpa_s;
3661         char ifname[100];
3662         char force_name[100];
3663         int ret;
3664
3665         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3666                     wpa_s->ifname);
3667         force_name[0] = '\0';
3668         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3669         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3670                              force_name, wpa_s->pending_interface_addr, NULL);
3671         if (ret < 0) {
3672                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3673                 return ret;
3674         }
3675         os_strlcpy(wpa_s->pending_interface_name, ifname,
3676                    sizeof(wpa_s->pending_interface_name));
3677
3678         os_memset(&iface, 0, sizeof(iface));
3679         iface.p2p_mgmt = 1;
3680         iface.ifname = wpa_s->pending_interface_name;
3681         iface.driver = wpa_s->driver->name;
3682         iface.driver_param = wpa_s->conf->driver_param;
3683         iface.confname = wpa_s->confname;
3684         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3685         if (!p2pdev_wpa_s) {
3686                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3687                 return -1;
3688         }
3689         p2pdev_wpa_s->parent = wpa_s;
3690
3691         wpa_s->pending_interface_name[0] = '\0';
3692         return 0;
3693 }
3694
3695
3696 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3697                                const u8 *noa, size_t noa_len)
3698 {
3699         struct wpa_supplicant *wpa_s, *intf = ctx;
3700         char hex[100];
3701
3702         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3703                 if (wpa_s->waiting_presence_resp)
3704                         break;
3705         }
3706         if (!wpa_s) {
3707                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3708                 return;
3709         }
3710         wpa_s->waiting_presence_resp = 0;
3711
3712         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3713         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3714                 " status=%u noa=%s", MAC2STR(src), status, hex);
3715 }
3716
3717
3718 /**
3719  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3720  * @global: Pointer to global data from wpa_supplicant_init()
3721  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3722  * Returns: 0 on success, -1 on failure
3723  */
3724 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3725 {
3726         struct p2p_config p2p;
3727         unsigned int r;
3728         int i;
3729
3730         if (wpa_s->conf->p2p_disabled)
3731                 return 0;
3732
3733         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3734                 return 0;
3735
3736         if (global->p2p)
3737                 return 0;
3738
3739         os_memset(&p2p, 0, sizeof(p2p));
3740         p2p.cb_ctx = wpa_s;
3741         p2p.debug_print = wpas_p2p_debug_print;
3742         p2p.p2p_scan = wpas_p2p_scan;
3743         p2p.send_action = wpas_send_action;
3744         p2p.send_action_done = wpas_send_action_done;
3745         p2p.go_neg_completed = wpas_go_neg_completed;
3746         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3747         p2p.dev_found = wpas_dev_found;
3748         p2p.dev_lost = wpas_dev_lost;
3749         p2p.find_stopped = wpas_find_stopped;
3750         p2p.start_listen = wpas_start_listen;
3751         p2p.stop_listen = wpas_stop_listen;
3752         p2p.send_probe_resp = wpas_send_probe_resp;
3753         p2p.sd_request = wpas_sd_request;
3754         p2p.sd_response = wpas_sd_response;
3755         p2p.prov_disc_req = wpas_prov_disc_req;
3756         p2p.prov_disc_resp = wpas_prov_disc_resp;
3757         p2p.prov_disc_fail = wpas_prov_disc_fail;
3758         p2p.invitation_process = wpas_invitation_process;
3759         p2p.invitation_received = wpas_invitation_received;
3760         p2p.invitation_result = wpas_invitation_result;
3761         p2p.get_noa = wpas_get_noa;
3762         p2p.go_connected = wpas_go_connected;
3763         p2p.presence_resp = wpas_presence_resp;
3764         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3765
3766         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3767         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3768         p2p.dev_name = wpa_s->conf->device_name;
3769         p2p.manufacturer = wpa_s->conf->manufacturer;
3770         p2p.model_name = wpa_s->conf->model_name;
3771         p2p.model_number = wpa_s->conf->model_number;
3772         p2p.serial_number = wpa_s->conf->serial_number;
3773         if (wpa_s->wps) {
3774                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3775                 p2p.config_methods = wpa_s->wps->config_methods;
3776         }
3777
3778         if (wpa_s->conf->p2p_listen_reg_class &&
3779             wpa_s->conf->p2p_listen_channel) {
3780                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3781                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3782         } else {
3783                 p2p.reg_class = 81;
3784                 /*
3785                  * Pick one of the social channels randomly as the listen
3786                  * channel.
3787                  */
3788                 os_get_random((u8 *) &r, sizeof(r));
3789                 p2p.channel = 1 + (r % 3) * 5;
3790         }
3791         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3792
3793         if (wpa_s->conf->p2p_oper_reg_class &&
3794             wpa_s->conf->p2p_oper_channel) {
3795                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3796                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3797                 p2p.cfg_op_channel = 1;
3798                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3799                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3800
3801         } else {
3802                 p2p.op_reg_class = 81;
3803                 /*
3804                  * Use random operation channel from (1, 6, 11) if no other
3805                  * preference is indicated.
3806                  */
3807                 os_get_random((u8 *) &r, sizeof(r));
3808                 p2p.op_channel = 1 + (r % 3) * 5;
3809                 p2p.cfg_op_channel = 0;
3810                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3811                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3812         }
3813
3814         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3815                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3816                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3817         }
3818
3819         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3820                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3821                 p2p.country[2] = 0x04;
3822         } else
3823                 os_memcpy(p2p.country, "XX\x04", 3);
3824
3825         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3826                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3827                            "channel list");
3828                 return -1;
3829         }
3830
3831         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3832                   WPS_DEV_TYPE_LEN);
3833
3834         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3835         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3836                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3837
3838         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3839                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3840
3841         p2p.max_peers = 100;
3842
3843         if (wpa_s->conf->p2p_ssid_postfix) {
3844                 p2p.ssid_postfix_len =
3845                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3846                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3847                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3848                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3849                           p2p.ssid_postfix_len);
3850         }
3851
3852         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3853
3854         p2p.max_listen = wpa_s->max_remain_on_chan;
3855
3856         global->p2p = p2p_init(&p2p);
3857         if (global->p2p == NULL)
3858                 return -1;
3859         global->p2p_init_wpa_s = wpa_s;
3860
3861         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3862                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3863                         continue;
3864                 p2p_add_wps_vendor_extension(
3865                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3866         }
3867
3868         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3869
3870         return 0;
3871 }
3872
3873
3874 /**
3875  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3876  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3877  *
3878  * This function deinitialize per-interface P2P data.
3879  */
3880 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3881 {
3882         if (wpa_s->driver && wpa_s->drv_priv)
3883                 wpa_drv_probe_req_report(wpa_s, 0);
3884
3885         if (wpa_s->go_params) {
3886                 /* Clear any stored provisioning info */
3887                 p2p_clear_provisioning_info(
3888                         wpa_s->global->p2p,
3889                         wpa_s->go_params->peer_device_addr);
3890         }
3891
3892         os_free(wpa_s->go_params);
3893         wpa_s->go_params = NULL;
3894         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3895         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3896         wpa_s->p2p_long_listen = 0;
3897         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3898         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3899         wpas_p2p_remove_pending_group_interface(wpa_s);
3900         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3901         wpas_p2p_listen_work_done(wpa_s);
3902         if (wpa_s->p2p_send_action_work) {
3903                 os_free(wpa_s->p2p_send_action_work->ctx);
3904                 radio_work_done(wpa_s->p2p_send_action_work);
3905                 wpa_s->p2p_send_action_work = NULL;
3906         }
3907         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3908
3909         wpabuf_free(wpa_s->p2p_oob_dev_pw);
3910         wpa_s->p2p_oob_dev_pw = NULL;
3911
3912         /* TODO: remove group interface from the driver if this wpa_s instance
3913          * is on top of a P2P group interface */
3914 }
3915
3916
3917 /**
3918  * wpas_p2p_deinit_global - Deinitialize global P2P module
3919  * @global: Pointer to global data from wpa_supplicant_init()
3920  *
3921  * This function deinitializes the global (per device) P2P module.
3922  */
3923 void wpas_p2p_deinit_global(struct wpa_global *global)
3924 {
3925         struct wpa_supplicant *wpa_s, *tmp;
3926
3927         wpa_s = global->ifaces;
3928         if (wpa_s)
3929                 wpas_p2p_service_flush(wpa_s);
3930
3931         if (global->p2p == NULL)
3932                 return;
3933
3934         /* Remove remaining P2P group interfaces */
3935         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3936                 wpa_s = wpa_s->next;
3937         while (wpa_s) {
3938                 tmp = global->ifaces;
3939                 while (tmp &&
3940                        (tmp == wpa_s ||
3941                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3942                         tmp = tmp->next;
3943                 }
3944                 if (tmp == NULL)
3945                         break;
3946                 /* Disconnect from the P2P group and deinit the interface */
3947                 wpas_p2p_disconnect(tmp);
3948         }
3949
3950         /*
3951          * Deinit GO data on any possibly remaining interface (if main
3952          * interface is used as GO).
3953          */
3954         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3955                 if (wpa_s->ap_iface)
3956                         wpas_p2p_group_deinit(wpa_s);
3957         }
3958
3959         p2p_deinit(global->p2p);
3960         global->p2p = NULL;
3961         global->p2p_init_wpa_s = NULL;
3962 }
3963
3964
3965 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3966 {
3967         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
3968             wpa_s->conf->p2p_no_group_iface)
3969                 return 0; /* separate interface disabled per configuration */
3970         if (wpa_s->drv_flags &
3971             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3972              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3973                 return 1; /* P2P group requires a new interface in every case
3974                            */
3975         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3976                 return 0; /* driver does not support concurrent operations */
3977         if (wpa_s->global->ifaces->next)
3978                 return 1; /* more that one interface already in use */
3979         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3980                 return 1; /* this interface is already in use */
3981         return 0;
3982 }
3983
3984
3985 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3986                                  const u8 *peer_addr,
3987                                  enum p2p_wps_method wps_method,
3988                                  int go_intent, const u8 *own_interface_addr,
3989                                  unsigned int force_freq, int persistent_group,
3990                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3991 {
3992         if (persistent_group && wpa_s->conf->persistent_reconnect)
3993                 persistent_group = 2;
3994
3995         /*
3996          * Increase GO config timeout if HT40 is used since it takes some time
3997          * to scan channels for coex purposes before the BSS can be started.
3998          */
3999         p2p_set_config_timeout(wpa_s->global->p2p,
4000                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4001
4002         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4003                            go_intent, own_interface_addr, force_freq,
4004                            persistent_group, ssid ? ssid->ssid : NULL,
4005                            ssid ? ssid->ssid_len : 0,
4006                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4007                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4008                            0);
4009 }
4010
4011
4012 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4013                                 const u8 *peer_addr,
4014                                 enum p2p_wps_method wps_method,
4015                                 int go_intent, const u8 *own_interface_addr,
4016                                 unsigned int force_freq, int persistent_group,
4017                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4018 {
4019         if (persistent_group && wpa_s->conf->persistent_reconnect)
4020                 persistent_group = 2;
4021
4022         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4023                              go_intent, own_interface_addr, force_freq,
4024                              persistent_group, ssid ? ssid->ssid : NULL,
4025                              ssid ? ssid->ssid_len : 0, pref_freq,
4026                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4027                              0);
4028 }
4029
4030
4031 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4032 {
4033         wpa_s->p2p_join_scan_count++;
4034         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4035                    wpa_s->p2p_join_scan_count);
4036         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4037                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4038                            " for join operationg - stop join attempt",
4039                            MAC2STR(wpa_s->pending_join_iface_addr));
4040                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4041                 if (wpa_s->p2p_auto_pd) {
4042                         wpa_s->p2p_auto_pd = 0;
4043                         wpa_msg_global(wpa_s, MSG_INFO,
4044                                        P2P_EVENT_PROV_DISC_FAILURE
4045                                        " p2p_dev_addr=" MACSTR " status=N/A",
4046                                        MAC2STR(wpa_s->pending_join_dev_addr));
4047                         return;
4048                 }
4049                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4050                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4051         }
4052 }
4053
4054
4055 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4056 {
4057         int *freqs, res, num, i;
4058
4059         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4060                 /* Multiple channels are supported and not all are in use */
4061                 return 0;
4062         }
4063
4064         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4065         if (!freqs)
4066                 return 1;
4067
4068         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4069                                         wpa_s->num_multichan_concurrent);
4070         if (num < 0) {
4071                 res = 1;
4072                 goto exit_free;
4073         }
4074
4075         for (i = 0; i < num; i++) {
4076                 if (freqs[i] == freq) {
4077                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4078                                    freq);
4079                         res = 0;
4080                         goto exit_free;
4081                 }
4082         }
4083
4084         res = 1;
4085
4086 exit_free:
4087         os_free(freqs);
4088         return res;
4089 }
4090
4091
4092 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4093                             const u8 *peer_dev_addr)
4094 {
4095         struct wpa_bss *bss;
4096         int updated;
4097
4098         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4099         if (bss == NULL)
4100                 return -1;
4101         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4102                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4103                            "last scan");
4104                 return 0;
4105         }
4106
4107         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4108                                     &bss->last_update);
4109         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4110                    "%ld.%06ld (%supdated in last scan)",
4111                    bss->last_update.sec, bss->last_update.usec,
4112                    updated ? "": "not ");
4113
4114         return updated;
4115 }
4116
4117
4118 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4119                                    struct wpa_scan_results *scan_res)
4120 {
4121         struct wpa_bss *bss = NULL;
4122         int freq;
4123         u8 iface_addr[ETH_ALEN];
4124
4125         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4126
4127         if (wpa_s->global->p2p_disabled)
4128                 return;
4129
4130         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4131                    scan_res ? (int) scan_res->num : -1,
4132                    wpa_s->p2p_auto_join ? "auto_" : "");
4133
4134         if (scan_res)
4135                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4136
4137         if (wpa_s->p2p_auto_pd) {
4138                 int join = wpas_p2p_peer_go(wpa_s,
4139                                             wpa_s->pending_join_dev_addr);
4140                 if (join == 0 &&
4141                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4142                         wpa_s->auto_pd_scan_retry++;
4143                         bss = wpa_bss_get_bssid_latest(
4144                                 wpa_s, wpa_s->pending_join_dev_addr);
4145                         if (bss) {
4146                                 freq = bss->freq;
4147                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4148                                            "the peer " MACSTR " at %d MHz",
4149                                            wpa_s->auto_pd_scan_retry,
4150                                            MAC2STR(wpa_s->
4151                                                    pending_join_dev_addr),
4152                                            freq);
4153                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4154                                 return;
4155                         }
4156                 }
4157
4158                 if (join < 0)
4159                         join = 0;
4160
4161                 wpa_s->p2p_auto_pd = 0;
4162                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4163                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4164                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4165                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4166                                       wpa_s->pending_join_dev_addr,
4167                                       wpa_s->pending_pd_config_methods, join,
4168                                       0, wpa_s->user_initiated_pd) < 0) {
4169                         wpa_s->p2p_auto_pd = 0;
4170                         wpa_msg_global(wpa_s, MSG_INFO,
4171                                        P2P_EVENT_PROV_DISC_FAILURE
4172                                        " p2p_dev_addr=" MACSTR " status=N/A",
4173                                        MAC2STR(wpa_s->pending_join_dev_addr));
4174                 }
4175                 return;
4176         }
4177
4178         if (wpa_s->p2p_auto_join) {
4179                 int join = wpas_p2p_peer_go(wpa_s,
4180                                             wpa_s->pending_join_dev_addr);
4181                 if (join < 0) {
4182                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4183                                    "running a GO -> use GO Negotiation");
4184                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4185                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4186                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4187                                          wpa_s->p2p_go_intent,
4188                                          wpa_s->p2p_connect_freq,
4189                                          wpa_s->p2p_persistent_id,
4190                                          wpa_s->p2p_pd_before_go_neg,
4191                                          wpa_s->p2p_go_ht40,
4192                                          wpa_s->p2p_go_vht);
4193                         return;
4194                 }
4195
4196                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4197                            "try to join the group", join ? "" :
4198                            " in older scan");
4199                 if (!join)
4200                         wpa_s->p2p_fallback_to_go_neg = 1;
4201         }
4202
4203         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4204                                  wpa_s->pending_join_iface_addr);
4205         if (freq < 0 &&
4206             p2p_get_interface_addr(wpa_s->global->p2p,
4207                                    wpa_s->pending_join_dev_addr,
4208                                    iface_addr) == 0 &&
4209             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4210         {
4211                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4212                            "address for join from " MACSTR " to " MACSTR
4213                            " based on newly discovered P2P peer entry",
4214                            MAC2STR(wpa_s->pending_join_iface_addr),
4215                            MAC2STR(iface_addr));
4216                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4217                           ETH_ALEN);
4218
4219                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4220                                          wpa_s->pending_join_iface_addr);
4221         }
4222         if (freq >= 0) {
4223                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4224                            "from P2P peer table: %d MHz", freq);
4225         }
4226         if (wpa_s->p2p_join_ssid_len) {
4227                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4228                            MACSTR " and SSID %s",
4229                            MAC2STR(wpa_s->pending_join_iface_addr),
4230                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4231                                         wpa_s->p2p_join_ssid_len));
4232                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4233                                   wpa_s->p2p_join_ssid,
4234                                   wpa_s->p2p_join_ssid_len);
4235         }
4236         if (!bss) {
4237                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4238                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4239                 bss = wpa_bss_get_bssid_latest(wpa_s,
4240                                                wpa_s->pending_join_iface_addr);
4241         }
4242         if (bss) {
4243                 freq = bss->freq;
4244                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4245                            "from BSS table: %d MHz (SSID %s)", freq,
4246                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4247         }
4248         if (freq > 0) {
4249                 u16 method;
4250
4251                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4252                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4253                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4254                                        "reason=FREQ_CONFLICT");
4255                         return;
4256                 }
4257
4258                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4259                            "prior to joining an existing group (GO " MACSTR
4260                            " freq=%u MHz)",
4261                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4262                 wpa_s->pending_pd_before_join = 1;
4263
4264                 switch (wpa_s->pending_join_wps_method) {
4265                 case WPS_PIN_DISPLAY:
4266                         method = WPS_CONFIG_KEYPAD;
4267                         break;
4268                 case WPS_PIN_KEYPAD:
4269                         method = WPS_CONFIG_DISPLAY;
4270                         break;
4271                 case WPS_PBC:
4272                         method = WPS_CONFIG_PUSHBUTTON;
4273                         break;
4274                 default:
4275                         method = 0;
4276                         break;
4277                 }
4278
4279                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4280                                                wpa_s->pending_join_dev_addr) ==
4281                      method)) {
4282                         /*
4283                          * We have already performed provision discovery for
4284                          * joining the group. Proceed directly to join
4285                          * operation without duplicated provision discovery. */
4286                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4287                                    "with " MACSTR " already done - proceed to "
4288                                    "join",
4289                                    MAC2STR(wpa_s->pending_join_dev_addr));
4290                         wpa_s->pending_pd_before_join = 0;
4291                         goto start;
4292                 }
4293
4294                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4295                                       wpa_s->pending_join_dev_addr, method, 1,
4296                                       freq, wpa_s->user_initiated_pd) < 0) {
4297                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4298                                    "Discovery Request before joining an "
4299                                    "existing group");
4300                         wpa_s->pending_pd_before_join = 0;
4301                         goto start;
4302                 }
4303                 return;
4304         }
4305
4306         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4307         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4308         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4309         wpas_p2p_check_join_scan_limit(wpa_s);
4310         return;
4311
4312 start:
4313         /* Start join operation immediately */
4314         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4315 }
4316
4317
4318 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4319                                    const u8 *ssid, size_t ssid_len)
4320 {
4321         int ret;
4322         struct wpa_driver_scan_params params;
4323         struct wpabuf *wps_ie, *ies;
4324         size_t ielen;
4325         int freqs[2] = { 0, 0 };
4326
4327         os_memset(&params, 0, sizeof(params));
4328
4329         /* P2P Wildcard SSID */
4330         params.num_ssids = 1;
4331         if (ssid && ssid_len) {
4332                 params.ssids[0].ssid = ssid;
4333                 params.ssids[0].ssid_len = ssid_len;
4334                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4335                 wpa_s->p2p_join_ssid_len = ssid_len;
4336         } else {
4337                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4338                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4339                 wpa_s->p2p_join_ssid_len = 0;
4340         }
4341
4342         wpa_s->wps->dev.p2p = 1;
4343         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4344                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4345                                         NULL);
4346         if (wps_ie == NULL) {
4347                 wpas_p2p_scan_res_join(wpa_s, NULL);
4348                 return;
4349         }
4350
4351         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4352         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4353         if (ies == NULL) {
4354                 wpabuf_free(wps_ie);
4355                 wpas_p2p_scan_res_join(wpa_s, NULL);
4356                 return;
4357         }
4358         wpabuf_put_buf(ies, wps_ie);
4359         wpabuf_free(wps_ie);
4360
4361         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4362
4363         params.p2p_probe = 1;
4364         params.extra_ies = wpabuf_head(ies);
4365         params.extra_ies_len = wpabuf_len(ies);
4366
4367         if (!freq) {
4368                 int oper_freq;
4369                 /*
4370                  * If freq is not provided, check the operating freq of the GO
4371                  * and use a single channel scan on if possible.
4372                  */
4373                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4374                                               wpa_s->pending_join_iface_addr);
4375                 if (oper_freq > 0)
4376                         freq = oper_freq;
4377         }
4378         if (freq > 0) {
4379                 freqs[0] = freq;
4380                 params.freqs = freqs;
4381         }
4382
4383         /*
4384          * Run a scan to update BSS table and start Provision Discovery once
4385          * the new scan results become available.
4386          */
4387         ret = wpa_drv_scan(wpa_s, &params);
4388         if (!ret) {
4389                 os_get_reltime(&wpa_s->scan_trigger_time);
4390                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4391                 wpa_s->own_scan_requested = 1;
4392         }
4393
4394         wpabuf_free(ies);
4395
4396         if (ret) {
4397                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4398                            "try again later");
4399                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4400                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4401                 wpas_p2p_check_join_scan_limit(wpa_s);
4402         }
4403 }
4404
4405
4406 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4407 {
4408         struct wpa_supplicant *wpa_s = eloop_ctx;
4409         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4410 }
4411
4412
4413 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4414                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4415                          int auto_join, int op_freq,
4416                          const u8 *ssid, size_t ssid_len)
4417 {
4418         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4419                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4420                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4421                    auto_join ? " (auto_join)" : "");
4422         if (ssid && ssid_len) {
4423                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4424                            wpa_ssid_txt(ssid, ssid_len));
4425         }
4426
4427         wpa_s->p2p_auto_pd = 0;
4428         wpa_s->p2p_auto_join = !!auto_join;
4429         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4430         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4431         wpa_s->pending_join_wps_method = wps_method;
4432
4433         /* Make sure we are not running find during connection establishment */
4434         wpas_p2p_stop_find(wpa_s);
4435
4436         wpa_s->p2p_join_scan_count = 0;
4437         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4438         return 0;
4439 }
4440
4441
4442 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4443                                const u8 *ssid, size_t ssid_len)
4444 {
4445         struct wpa_supplicant *group;
4446         struct p2p_go_neg_results res;
4447         struct wpa_bss *bss;
4448
4449         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4450         if (group == NULL)
4451                 return -1;
4452         if (group != wpa_s) {
4453                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4454                           sizeof(group->p2p_pin));
4455                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4456         } else {
4457                 /*
4458                  * Need to mark the current interface for p2p_group_formation
4459                  * when a separate group interface is not used. This is needed
4460                  * to allow p2p_cancel stop a pending p2p_connect-join.
4461                  * wpas_p2p_init_group_interface() addresses this for the case
4462                  * where a separate group interface is used.
4463                  */
4464                 wpa_s->global->p2p_group_formation = wpa_s;
4465         }
4466
4467         group->p2p_in_provisioning = 1;
4468         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4469
4470         os_memset(&res, 0, sizeof(res));
4471         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4472         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4473                   ETH_ALEN);
4474         res.wps_method = wpa_s->pending_join_wps_method;
4475         if (freq && ssid && ssid_len) {
4476                 res.freq = freq;
4477                 res.ssid_len = ssid_len;
4478                 os_memcpy(res.ssid, ssid, ssid_len);
4479         } else {
4480                 bss = wpa_bss_get_bssid_latest(wpa_s,
4481                                                wpa_s->pending_join_iface_addr);
4482                 if (bss) {
4483                         res.freq = bss->freq;
4484                         res.ssid_len = bss->ssid_len;
4485                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4486                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4487                                    bss->freq,
4488                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4489                 }
4490         }
4491
4492         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4493                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4494                            "starting client");
4495                 wpa_drv_cancel_remain_on_channel(wpa_s);
4496                 wpa_s->off_channel_freq = 0;
4497                 wpa_s->roc_waiting_drv_freq = 0;
4498         }
4499         wpas_start_wps_enrollee(group, &res);
4500
4501         /*
4502          * Allow a longer timeout for join-a-running-group than normal 15
4503          * second group formation timeout since the GO may not have authorized
4504          * our connection yet.
4505          */
4506         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4507         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4508                                wpa_s, NULL);
4509
4510         return 0;
4511 }
4512
4513
4514 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4515                                 int *force_freq, int *pref_freq, int go)
4516 {
4517         int *freqs, res;
4518         unsigned int freq_in_use = 0, num, i;
4519
4520         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4521         if (!freqs)
4522                 return -1;
4523
4524         num = get_shared_radio_freqs(wpa_s, freqs,
4525                                      wpa_s->num_multichan_concurrent);
4526         wpa_printf(MSG_DEBUG,
4527                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4528                    freq, wpa_s->num_multichan_concurrent, num);
4529
4530         if (freq > 0) {
4531                 int ret;
4532                 if (go)
4533                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4534                 else
4535                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4536                 if (!ret) {
4537                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4538                                    "(%u MHz) is not supported for P2P uses",
4539                                    freq);
4540                         res = -3;
4541                         goto exit_free;
4542                 }
4543
4544                 for (i = 0; i < num; i++) {
4545                         if (freqs[i] == freq)
4546                                 freq_in_use = 1;
4547                 }
4548
4549                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4550                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4551                                    freq);
4552                         res = -2;
4553                         goto exit_free;
4554                 }
4555                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4556                            "requested channel (%u MHz)", freq);
4557                 *force_freq = freq;
4558                 goto exit_ok;
4559         }
4560
4561         for (i = 0; i < num; i++) {
4562                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4563                         continue;
4564
4565                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4566                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4567                                    freqs[i]);
4568                         *pref_freq = freqs[i];
4569                 } else {
4570                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4571                                    freqs[i]);
4572                         *force_freq = freqs[i];
4573                 }
4574                 break;
4575         }
4576
4577         if (i == num) {
4578                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4579                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4580                         *force_freq = 0;
4581                 } else if (num < wpa_s->num_multichan_concurrent) {
4582                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4583                         *force_freq = 0;
4584                 } else {
4585                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4586                         res = -2;
4587                         goto exit_free;
4588                 }
4589         }
4590
4591 exit_ok:
4592         res = 0;
4593 exit_free:
4594         os_free(freqs);
4595         return res;
4596 }
4597
4598
4599 /**
4600  * wpas_p2p_connect - Request P2P Group Formation to be started
4601  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4602  * @peer_addr: Address of the peer P2P Device
4603  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4604  * @persistent_group: Whether to create a persistent group
4605  * @auto_join: Whether to select join vs. GO Negotiation automatically
4606  * @join: Whether to join an existing group (as a client) instead of starting
4607  *      Group Owner negotiation; @peer_addr is BSSID in that case
4608  * @auth: Whether to only authorize the connection instead of doing that and
4609  *      initiating Group Owner negotiation
4610  * @go_intent: GO Intent or -1 to use default
4611  * @freq: Frequency for the group or 0 for auto-selection
4612  * @persistent_id: Persistent group credentials to use for forcing GO
4613  *      parameters or -1 to generate new values (SSID/passphrase)
4614  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4615  *      interoperability workaround when initiating group formation
4616  * @ht40: Start GO with 40 MHz channel width
4617  * @vht:  Start GO with VHT support
4618  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4619  *      failure, -2 on failure due to channel not currently available,
4620  *      -3 if forced channel is not supported
4621  */
4622 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4623                      const char *pin, enum p2p_wps_method wps_method,
4624                      int persistent_group, int auto_join, int join, int auth,
4625                      int go_intent, int freq, int persistent_id, int pd,
4626                      int ht40, int vht)
4627 {
4628         int force_freq = 0, pref_freq = 0;
4629         int ret = 0, res;
4630         enum wpa_driver_if_type iftype;
4631         const u8 *if_addr;
4632         struct wpa_ssid *ssid = NULL;
4633
4634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4635                 return -1;
4636
4637         if (persistent_id >= 0) {
4638                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4639                 if (ssid == NULL || ssid->disabled != 2 ||
4640                     ssid->mode != WPAS_MODE_P2P_GO)
4641                         return -1;
4642         }
4643
4644         os_free(wpa_s->global->add_psk);
4645         wpa_s->global->add_psk = NULL;
4646
4647         wpa_s->global->p2p_fail_on_wps_complete = 0;
4648
4649         if (go_intent < 0)
4650                 go_intent = wpa_s->conf->p2p_go_intent;
4651
4652         if (!auth)
4653                 wpa_s->p2p_long_listen = 0;
4654
4655         wpa_s->p2p_wps_method = wps_method;
4656         wpa_s->p2p_persistent_group = !!persistent_group;
4657         wpa_s->p2p_persistent_id = persistent_id;
4658         wpa_s->p2p_go_intent = go_intent;
4659         wpa_s->p2p_connect_freq = freq;
4660         wpa_s->p2p_fallback_to_go_neg = 0;
4661         wpa_s->p2p_pd_before_go_neg = !!pd;
4662         wpa_s->p2p_go_ht40 = !!ht40;
4663         wpa_s->p2p_go_vht = !!vht;
4664
4665         if (pin)
4666                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4667         else if (wps_method == WPS_PIN_DISPLAY) {
4668                 ret = wps_generate_pin();
4669                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4670                             ret);
4671                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4672                            wpa_s->p2p_pin);
4673         } else
4674                 wpa_s->p2p_pin[0] = '\0';
4675
4676         if (join || auto_join) {
4677                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4678                 if (auth) {
4679                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4680                                    "connect a running group from " MACSTR,
4681                                    MAC2STR(peer_addr));
4682                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4683                         return ret;
4684                 }
4685                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4686                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4687                                            iface_addr) < 0) {
4688                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4689                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4690                                          dev_addr);
4691                 }
4692                 if (auto_join) {
4693                         os_get_reltime(&wpa_s->p2p_auto_started);
4694                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4695                                    "%ld.%06ld",
4696                                    wpa_s->p2p_auto_started.sec,
4697                                    wpa_s->p2p_auto_started.usec);
4698                 }
4699                 wpa_s->user_initiated_pd = 1;
4700                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4701                                   auto_join, freq, NULL, 0) < 0)
4702                         return -1;
4703                 return ret;
4704         }
4705
4706         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4707                                    go_intent == 15);
4708         if (res)
4709                 return res;
4710         wpas_p2p_set_own_freq_preference(wpa_s,
4711                                          force_freq ? force_freq : pref_freq);
4712
4713         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4714
4715         if (wpa_s->create_p2p_iface) {
4716                 /* Prepare to add a new interface for the group */
4717                 iftype = WPA_IF_P2P_GROUP;
4718                 if (go_intent == 15)
4719                         iftype = WPA_IF_P2P_GO;
4720                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4721                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4722                                    "interface for the group");
4723                         return -1;
4724                 }
4725
4726                 if_addr = wpa_s->pending_interface_addr;
4727         } else
4728                 if_addr = wpa_s->own_addr;
4729
4730         if (auth) {
4731                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4732                                          go_intent, if_addr,
4733                                          force_freq, persistent_group, ssid,
4734                                          pref_freq) < 0)
4735                         return -1;
4736                 return ret;
4737         }
4738
4739         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4740                                   go_intent, if_addr, force_freq,
4741                                   persistent_group, ssid, pref_freq) < 0) {
4742                 if (wpa_s->create_p2p_iface)
4743                         wpas_p2p_remove_pending_group_interface(wpa_s);
4744                 return -1;
4745         }
4746         return ret;
4747 }
4748
4749
4750 /**
4751  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4752  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4753  * @freq: Frequency of the channel in MHz
4754  * @duration: Duration of the stay on the channel in milliseconds
4755  *
4756  * This callback is called when the driver indicates that it has started the
4757  * requested remain-on-channel duration.
4758  */
4759 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4760                                    unsigned int freq, unsigned int duration)
4761 {
4762         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4763                 return;
4764         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4765                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4766                               wpa_s->pending_listen_duration);
4767                 wpa_s->pending_listen_freq = 0;
4768         } else {
4769                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4770                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4771                            freq, duration);
4772         }
4773 }
4774
4775
4776 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4777                                  unsigned int timeout)
4778 {
4779         /* Limit maximum Listen state time based on driver limitation. */
4780         if (timeout > wpa_s->max_remain_on_chan)
4781                 timeout = wpa_s->max_remain_on_chan;
4782
4783         return p2p_listen(wpa_s->global->p2p, timeout);
4784 }
4785
4786
4787 /**
4788  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4789  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4790  * @freq: Frequency of the channel in MHz
4791  *
4792  * This callback is called when the driver indicates that a remain-on-channel
4793  * operation has been completed, i.e., the duration on the requested channel
4794  * has timed out.
4795  */
4796 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4797                                           unsigned int freq)
4798 {
4799         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4800                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4801                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4802         wpas_p2p_listen_work_done(wpa_s);
4803         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4804                 return;
4805         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4806                 return; /* P2P module started a new operation */
4807         if (offchannel_pending_action_tx(wpa_s))
4808                 return;
4809         if (wpa_s->p2p_long_listen > 0)
4810                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4811         if (wpa_s->p2p_long_listen > 0) {
4812                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4813                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4814         } else {
4815                 /*
4816                  * When listen duration is over, stop listen & update p2p_state
4817                  * to IDLE.
4818                  */
4819                 p2p_stop_listen(wpa_s->global->p2p);
4820         }
4821 }
4822
4823
4824 /**
4825  * wpas_p2p_group_remove - Remove a P2P group
4826  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4827  * @ifname: Network interface name of the group interface or "*" to remove all
4828  *      groups
4829  * Returns: 0 on success, -1 on failure
4830  *
4831  * This function is used to remove a P2P group. This can be used to disconnect
4832  * from a group in which the local end is a P2P Client or to end a P2P Group in
4833  * case the local end is the Group Owner. If a virtual network interface was
4834  * created for this group, that interface will be removed. Otherwise, only the
4835  * configured P2P group network will be removed from the interface.
4836  */
4837 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4838 {
4839         struct wpa_global *global = wpa_s->global;
4840
4841         if (os_strcmp(ifname, "*") == 0) {
4842                 struct wpa_supplicant *prev;
4843                 wpa_s = global->ifaces;
4844                 while (wpa_s) {
4845                         prev = wpa_s;
4846                         wpa_s = wpa_s->next;
4847                         if (prev->p2p_group_interface !=
4848                             NOT_P2P_GROUP_INTERFACE ||
4849                             (prev->current_ssid &&
4850                              prev->current_ssid->p2p_group))
4851                                 wpas_p2p_disconnect(prev);
4852                 }
4853                 return 0;
4854         }
4855
4856         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4857                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4858                         break;
4859         }
4860
4861         return wpas_p2p_disconnect(wpa_s);
4862 }
4863
4864
4865 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4866 {
4867         unsigned int r;
4868
4869         if (freq == 2) {
4870                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4871                            "band");
4872                 if (wpa_s->best_24_freq > 0 &&
4873                     p2p_supported_freq_go(wpa_s->global->p2p,
4874                                           wpa_s->best_24_freq)) {
4875                         freq = wpa_s->best_24_freq;
4876                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4877                                    "channel: %d MHz", freq);
4878                 } else {
4879                         os_get_random((u8 *) &r, sizeof(r));
4880                         freq = 2412 + (r % 3) * 25;
4881                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4882                                    "channel: %d MHz", freq);
4883                 }
4884         }
4885
4886         if (freq == 5) {
4887                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4888                            "band");
4889                 if (wpa_s->best_5_freq > 0 &&
4890                     p2p_supported_freq_go(wpa_s->global->p2p,
4891                                        wpa_s->best_5_freq)) {
4892                         freq = wpa_s->best_5_freq;
4893                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4894                                    "channel: %d MHz", freq);
4895                 } else {
4896                         os_get_random((u8 *) &r, sizeof(r));
4897                         freq = 5180 + (r % 4) * 20;
4898                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4899                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4900                                            "5 GHz channel for P2P group");
4901                                 return -1;
4902                         }
4903                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4904                                    "channel: %d MHz", freq);
4905                 }
4906         }
4907
4908         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4909                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4910                            "(%u MHz) is not supported for P2P uses",
4911                            freq);
4912                 return -1;
4913         }
4914
4915         return freq;
4916 }
4917
4918
4919 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4920                                    struct p2p_go_neg_results *params,
4921                                    int freq, int ht40, int vht,
4922                                    const struct p2p_channels *channels)
4923 {
4924         int res, *freqs;
4925         unsigned int pref_freq;
4926         unsigned int num, i;
4927
4928         os_memset(params, 0, sizeof(*params));
4929         params->role_go = 1;
4930         params->ht40 = ht40;
4931         params->vht = vht;
4932         if (freq) {
4933                 if (!freq_included(channels, freq)) {
4934                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4935                                    "accepted", freq);
4936                         return -1;
4937                 }
4938                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4939                            "frequency %d MHz", freq);
4940                 params->freq = freq;
4941         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4942                    wpa_s->conf->p2p_oper_channel >= 1 &&
4943                    wpa_s->conf->p2p_oper_channel <= 11 &&
4944                    freq_included(channels,
4945                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4946                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4947                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4948                            "frequency %d MHz", params->freq);
4949         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4950                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4951                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4952                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4953                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4954                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4955                    freq_included(channels,
4956                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4957                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4958                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4959                            "frequency %d MHz", params->freq);
4960         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4961                    wpa_s->best_overall_freq > 0 &&
4962                    p2p_supported_freq_go(wpa_s->global->p2p,
4963                                          wpa_s->best_overall_freq) &&
4964                    freq_included(channels, wpa_s->best_overall_freq)) {
4965                 params->freq = wpa_s->best_overall_freq;
4966                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
4967                            "channel %d MHz", params->freq);
4968         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4969                    wpa_s->best_24_freq > 0 &&
4970                    p2p_supported_freq_go(wpa_s->global->p2p,
4971                                          wpa_s->best_24_freq) &&
4972                    freq_included(channels, wpa_s->best_24_freq)) {
4973                 params->freq = wpa_s->best_24_freq;
4974                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
4975                            "channel %d MHz", params->freq);
4976         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4977                    wpa_s->best_5_freq > 0 &&
4978                    p2p_supported_freq_go(wpa_s->global->p2p,
4979                                          wpa_s->best_5_freq) &&
4980                    freq_included(channels, wpa_s->best_5_freq)) {
4981                 params->freq = wpa_s->best_5_freq;
4982                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
4983                            "channel %d MHz", params->freq);
4984         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
4985                                                   channels))) {
4986                 params->freq = pref_freq;
4987                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
4988                            "channels", params->freq);
4989         } else {
4990                 int chan;
4991                 for (chan = 0; chan < 11; chan++) {
4992                         params->freq = 2412 + chan * 5;
4993                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
4994                                                       params->freq) &&
4995                             freq_included(channels, params->freq))
4996                                 break;
4997                 }
4998                 if (chan == 11) {
4999                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
5000                                    "allowed");
5001                         return -1;
5002                 }
5003                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
5004                            "known)", params->freq);
5005         }
5006
5007         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
5008         if (!freqs)
5009                 return -1;
5010
5011         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5012                                         wpa_s->num_multichan_concurrent);
5013         if (res < 0) {
5014                 os_free(freqs);
5015                 return -1;
5016         }
5017         num = res;
5018
5019         for (i = 0; i < num; i++) {
5020                 if (freq && freqs[i] == freq)
5021                         break;
5022                 if (!freq && freq_included(channels, freqs[i])) {
5023                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5024                                    freqs[i]);
5025                         params->freq = freqs[i];
5026                         break;
5027                 }
5028         }
5029
5030         if (i == num) {
5031                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5032                         if (freq)
5033                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5034                         else
5035                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5036                         os_free(freqs);
5037                         return -1;
5038                 } else if (num == 0) {
5039                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5040                 } else {
5041                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5042                 }
5043         }
5044
5045         os_free(freqs);
5046         return 0;
5047 }
5048
5049
5050 static struct wpa_supplicant *
5051 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5052                          int go)
5053 {
5054         struct wpa_supplicant *group_wpa_s;
5055
5056         if (!wpas_p2p_create_iface(wpa_s)) {
5057                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5058                         "operations");
5059                 wpa_s->p2p_first_connection_timeout = 0;
5060                 return wpa_s;
5061         }
5062
5063         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5064                                          WPA_IF_P2P_CLIENT) < 0) {
5065                 wpa_msg_global(wpa_s, MSG_ERROR,
5066                                "P2P: Failed to add group interface");
5067                 return NULL;
5068         }
5069         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5070         if (group_wpa_s == NULL) {
5071                 wpa_msg_global(wpa_s, MSG_ERROR,
5072                                "P2P: Failed to initialize group interface");
5073                 wpas_p2p_remove_pending_group_interface(wpa_s);
5074                 return NULL;
5075         }
5076
5077         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5078                 group_wpa_s->ifname);
5079         group_wpa_s->p2p_first_connection_timeout = 0;
5080         return group_wpa_s;
5081 }
5082
5083
5084 /**
5085  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5086  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5087  * @persistent_group: Whether to create a persistent group
5088  * @freq: Frequency for the group or 0 to indicate no hardcoding
5089  * @ht40: Start GO with 40 MHz channel width
5090  * @vht:  Start GO with VHT support
5091  * Returns: 0 on success, -1 on failure
5092  *
5093  * This function creates a new P2P group with the local end as the Group Owner,
5094  * i.e., without using Group Owner Negotiation.
5095  */
5096 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5097                        int freq, int ht40, int vht)
5098 {
5099         struct p2p_go_neg_results params;
5100
5101         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5102                 return -1;
5103
5104         os_free(wpa_s->global->add_psk);
5105         wpa_s->global->add_psk = NULL;
5106
5107         /* Make sure we are not running find during connection establishment */
5108         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5109         wpas_p2p_stop_find_oper(wpa_s);
5110
5111         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5112         if (freq < 0)
5113                 return -1;
5114
5115         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5116                 return -1;
5117         if (params.freq &&
5118             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5119                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5120                            "(%u MHz) is not supported for P2P uses",
5121                            params.freq);
5122                 return -1;
5123         }
5124         p2p_go_params(wpa_s->global->p2p, &params);
5125         params.persistent_group = persistent_group;
5126
5127         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5128         if (wpa_s == NULL)
5129                 return -1;
5130         wpas_start_wps_go(wpa_s, &params, 0);
5131
5132         return 0;
5133 }
5134
5135
5136 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5137                                  struct wpa_ssid *params, int addr_allocated)
5138 {
5139         struct wpa_ssid *ssid;
5140
5141         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5142         if (wpa_s == NULL)
5143                 return -1;
5144         wpa_s->p2p_last_4way_hs_fail = NULL;
5145
5146         wpa_supplicant_ap_deinit(wpa_s);
5147
5148         ssid = wpa_config_add_network(wpa_s->conf);
5149         if (ssid == NULL)
5150                 return -1;
5151         wpa_config_set_network_defaults(ssid);
5152         ssid->temporary = 1;
5153         ssid->proto = WPA_PROTO_RSN;
5154         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5155         ssid->group_cipher = WPA_CIPHER_CCMP;
5156         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5157         ssid->ssid = os_malloc(params->ssid_len);
5158         if (ssid->ssid == NULL) {
5159                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5160                 return -1;
5161         }
5162         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5163         ssid->ssid_len = params->ssid_len;
5164         ssid->p2p_group = 1;
5165         ssid->export_keys = 1;
5166         if (params->psk_set) {
5167                 os_memcpy(ssid->psk, params->psk, 32);
5168                 ssid->psk_set = 1;
5169         }
5170         if (params->passphrase)
5171                 ssid->passphrase = os_strdup(params->passphrase);
5172
5173         wpa_s->show_group_started = 1;
5174
5175         wpa_supplicant_select_network(wpa_s, ssid);
5176
5177         return 0;
5178 }
5179
5180
5181 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5182                                   struct wpa_ssid *ssid, int addr_allocated,
5183                                   int force_freq, int neg_freq, int ht40,
5184                                   int vht, const struct p2p_channels *channels,
5185                                   int connection_timeout)
5186 {
5187         struct p2p_go_neg_results params;
5188         int go = 0, freq;
5189
5190         if (ssid->disabled != 2 || ssid->ssid == NULL)
5191                 return -1;
5192
5193         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5194             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5195                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5196                            "already running");
5197                 return 0;
5198         }
5199
5200         os_free(wpa_s->global->add_psk);
5201         wpa_s->global->add_psk = NULL;
5202
5203         /* Make sure we are not running find during connection establishment */
5204         wpas_p2p_stop_find_oper(wpa_s);
5205
5206         wpa_s->p2p_fallback_to_go_neg = 0;
5207
5208         if (ssid->mode == WPAS_MODE_INFRA)
5209                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
5210
5211         if (ssid->mode != WPAS_MODE_P2P_GO)
5212                 return -1;
5213
5214         if (force_freq > 0) {
5215                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5216                 if (freq < 0)
5217                         return -1;
5218         } else {
5219                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5220                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5221                         freq = 0;
5222         }
5223
5224         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5225                 return -1;
5226
5227         params.role_go = 1;
5228         params.psk_set = ssid->psk_set;
5229         if (params.psk_set)
5230                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5231         if (ssid->passphrase) {
5232                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5233                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5234                                    "persistent group");
5235                         return -1;
5236                 }
5237                 os_strlcpy(params.passphrase, ssid->passphrase,
5238                            sizeof(params.passphrase));
5239         }
5240         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5241         params.ssid_len = ssid->ssid_len;
5242         params.persistent_group = 1;
5243
5244         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5245         if (wpa_s == NULL)
5246                 return -1;
5247
5248         wpa_s->p2p_first_connection_timeout = connection_timeout;
5249         wpas_start_wps_go(wpa_s, &params, 0);
5250
5251         return 0;
5252 }
5253
5254
5255 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5256                                struct wpabuf *proberesp_ies)
5257 {
5258         struct wpa_supplicant *wpa_s = ctx;
5259         if (wpa_s->ap_iface) {
5260                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5261                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5262                         wpabuf_free(beacon_ies);
5263                         wpabuf_free(proberesp_ies);
5264                         return;
5265                 }
5266                 if (beacon_ies) {
5267                         wpabuf_free(hapd->p2p_beacon_ie);
5268                         hapd->p2p_beacon_ie = beacon_ies;
5269                 }
5270                 wpabuf_free(hapd->p2p_probe_resp_ie);
5271                 hapd->p2p_probe_resp_ie = proberesp_ies;
5272         } else {
5273                 wpabuf_free(beacon_ies);
5274                 wpabuf_free(proberesp_ies);
5275         }
5276         wpa_supplicant_ap_update_beacon(wpa_s);
5277 }
5278
5279
5280 static void wpas_p2p_idle_update(void *ctx, int idle)
5281 {
5282         struct wpa_supplicant *wpa_s = ctx;
5283         if (!wpa_s->ap_iface)
5284                 return;
5285         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5286         if (idle) {
5287                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5288                     wpa_s->p2p_in_provisioning) {
5289                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5290                         return;
5291                 }
5292                 wpas_p2p_set_group_idle_timeout(wpa_s);
5293         } else
5294                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5295 }
5296
5297
5298 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5299                                        struct wpa_ssid *ssid)
5300 {
5301         struct p2p_group *group;
5302         struct p2p_group_config *cfg;
5303
5304         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5305                 return NULL;
5306
5307         cfg = os_zalloc(sizeof(*cfg));
5308         if (cfg == NULL)
5309                 return NULL;
5310
5311         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5312                 cfg->persistent_group = 2;
5313         else if (ssid->p2p_persistent_group)
5314                 cfg->persistent_group = 1;
5315         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5316         if (wpa_s->max_stations &&
5317             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5318                 cfg->max_clients = wpa_s->max_stations;
5319         else
5320                 cfg->max_clients = wpa_s->conf->max_num_sta;
5321         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5322         cfg->ssid_len = ssid->ssid_len;
5323         cfg->freq = ssid->frequency;
5324         cfg->cb_ctx = wpa_s;
5325         cfg->ie_update = wpas_p2p_ie_update;
5326         cfg->idle_update = wpas_p2p_idle_update;
5327
5328         group = p2p_group_init(wpa_s->global->p2p, cfg);
5329         if (group == NULL)
5330                 os_free(cfg);
5331         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5332                 p2p_group_notif_formation_done(group);
5333         wpa_s->p2p_group = group;
5334         return group;
5335 }
5336
5337
5338 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5339                           int registrar)
5340 {
5341         struct wpa_ssid *ssid = wpa_s->current_ssid;
5342
5343         if (!wpa_s->p2p_in_provisioning) {
5344                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5345                            "provisioning not in progress");
5346                 return;
5347         }
5348
5349         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5350                 u8 go_dev_addr[ETH_ALEN];
5351                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5352                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5353                                           ssid->ssid_len);
5354                 /* Clear any stored provisioning info */
5355                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5356         }
5357
5358         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5359                              NULL);
5360         wpa_s->p2p_go_group_formation_completed = 1;
5361         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5362                 /*
5363                  * Use a separate timeout for initial data connection to
5364                  * complete to allow the group to be removed automatically if
5365                  * something goes wrong in this step before the P2P group idle
5366                  * timeout mechanism is taken into use.
5367                  */
5368                 wpa_dbg(wpa_s, MSG_DEBUG,
5369                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5370                         P2P_MAX_INITIAL_CONN_WAIT);
5371                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5372                                        wpas_p2p_group_formation_timeout,
5373                                        wpa_s->parent, NULL);
5374         } else if (ssid) {
5375                 /*
5376                  * Use a separate timeout for initial data connection to
5377                  * complete to allow the group to be removed automatically if
5378                  * the client does not complete data connection successfully.
5379                  */
5380                 wpa_dbg(wpa_s, MSG_DEBUG,
5381                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5382                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5383                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5384                                        wpas_p2p_group_formation_timeout,
5385                                        wpa_s->parent, NULL);
5386                 /*
5387                  * Complete group formation on first successful data connection
5388                  */
5389                 wpa_s->p2p_go_group_formation_completed = 0;
5390         }
5391         if (wpa_s->global->p2p)
5392                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5393         wpas_group_formation_completed(wpa_s, 1);
5394 }
5395
5396
5397 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5398                          struct wps_event_fail *fail)
5399 {
5400         if (!wpa_s->p2p_in_provisioning) {
5401                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5402                            "provisioning not in progress");
5403                 return;
5404         }
5405
5406         if (wpa_s->go_params) {
5407                 p2p_clear_provisioning_info(
5408                         wpa_s->global->p2p,
5409                         wpa_s->go_params->peer_device_addr);
5410         }
5411
5412         wpas_notify_p2p_wps_failed(wpa_s, fail);
5413
5414         if (wpa_s == wpa_s->global->p2p_group_formation) {
5415                 /*
5416                  * Allow some time for the failed WPS negotiation exchange to
5417                  * complete, but remove the group since group formation cannot
5418                  * succeed after provisioning failure.
5419                  */
5420                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5421                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5422                 eloop_deplete_timeout(0, 50000,
5423                                       wpas_p2p_group_formation_timeout,
5424                                       wpa_s->parent, NULL);
5425         }
5426 }
5427
5428
5429 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5430 {
5431         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5432             !wpa_s->p2p_in_provisioning)
5433                 return 0;
5434
5435         wpas_p2p_grpform_fail_after_wps(wpa_s);
5436
5437         return 1;
5438 }
5439
5440
5441 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5442                        const char *config_method,
5443                        enum wpas_p2p_prov_disc_use use)
5444 {
5445         u16 config_methods;
5446
5447         wpa_s->p2p_fallback_to_go_neg = 0;
5448         wpa_s->pending_pd_use = NORMAL_PD;
5449         if (os_strncmp(config_method, "display", 7) == 0)
5450                 config_methods = WPS_CONFIG_DISPLAY;
5451         else if (os_strncmp(config_method, "keypad", 6) == 0)
5452                 config_methods = WPS_CONFIG_KEYPAD;
5453         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5454                  os_strncmp(config_method, "pushbutton", 10) == 0)
5455                 config_methods = WPS_CONFIG_PUSHBUTTON;
5456         else {
5457                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5458                 return -1;
5459         }
5460
5461         if (use == WPAS_P2P_PD_AUTO) {
5462                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5463                 wpa_s->pending_pd_config_methods = config_methods;
5464                 wpa_s->p2p_auto_pd = 1;
5465                 wpa_s->p2p_auto_join = 0;
5466                 wpa_s->pending_pd_before_join = 0;
5467                 wpa_s->auto_pd_scan_retry = 0;
5468                 wpas_p2p_stop_find(wpa_s);
5469                 wpa_s->p2p_join_scan_count = 0;
5470                 os_get_reltime(&wpa_s->p2p_auto_started);
5471                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5472                            wpa_s->p2p_auto_started.sec,
5473                            wpa_s->p2p_auto_started.usec);
5474                 wpas_p2p_join_scan(wpa_s, NULL);
5475                 return 0;
5476         }
5477
5478         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5479                 return -1;
5480
5481         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5482                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5483                                  0, 1);
5484 }
5485
5486
5487 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5488                               char *end)
5489 {
5490         return p2p_scan_result_text(ies, ies_len, buf, end);
5491 }
5492
5493
5494 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5495 {
5496         if (!offchannel_pending_action_tx(wpa_s))
5497                 return;
5498
5499         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5500                    "operation request");
5501         offchannel_clear_pending_action_tx(wpa_s);
5502 }
5503
5504
5505 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5506                   enum p2p_discovery_type type,
5507                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5508                   const u8 *dev_id, unsigned int search_delay)
5509 {
5510         wpas_p2p_clear_pending_action_tx(wpa_s);
5511         wpa_s->p2p_long_listen = 0;
5512
5513         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5514             wpa_s->p2p_in_provisioning)
5515                 return -1;
5516
5517         wpa_supplicant_cancel_sched_scan(wpa_s);
5518
5519         return p2p_find(wpa_s->global->p2p, timeout, type,
5520                         num_req_dev_types, req_dev_types, dev_id,
5521                         search_delay);
5522 }
5523
5524
5525 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5526 {
5527         wpas_p2p_clear_pending_action_tx(wpa_s);
5528         wpa_s->p2p_long_listen = 0;
5529         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5530         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5531
5532         if (wpa_s->global->p2p)
5533                 p2p_stop_find(wpa_s->global->p2p);
5534
5535         return 0;
5536 }
5537
5538
5539 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5540 {
5541         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5542                 return;
5543         wpas_p2p_remove_pending_group_interface(wpa_s);
5544 }
5545
5546
5547 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5548 {
5549         struct wpa_supplicant *wpa_s = eloop_ctx;
5550         wpa_s->p2p_long_listen = 0;
5551 }
5552
5553
5554 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5555 {
5556         int res;
5557
5558         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5559                 return -1;
5560
5561         wpa_supplicant_cancel_sched_scan(wpa_s);
5562         wpas_p2p_clear_pending_action_tx(wpa_s);
5563
5564         if (timeout == 0) {
5565                 /*
5566                  * This is a request for unlimited Listen state. However, at
5567                  * least for now, this is mapped to a Listen state for one
5568                  * hour.
5569                  */
5570                 timeout = 3600;
5571         }
5572         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5573         wpa_s->p2p_long_listen = 0;
5574
5575         /*
5576          * Stop previous find/listen operation to avoid trying to request a new
5577          * remain-on-channel operation while the driver is still running the
5578          * previous one.
5579          */
5580         if (wpa_s->global->p2p)
5581                 p2p_stop_find(wpa_s->global->p2p);
5582
5583         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5584         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5585                 wpa_s->p2p_long_listen = timeout * 1000;
5586                 eloop_register_timeout(timeout, 0,
5587                                        wpas_p2p_long_listen_timeout,
5588                                        wpa_s, NULL);
5589         }
5590
5591         return res;
5592 }
5593
5594
5595 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5596                           u8 *buf, size_t len, int p2p_group)
5597 {
5598         struct wpabuf *p2p_ie;
5599         int ret;
5600
5601         if (wpa_s->global->p2p_disabled)
5602                 return -1;
5603         if (wpa_s->global->p2p == NULL)
5604                 return -1;
5605         if (bss == NULL)
5606                 return -1;
5607
5608         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5609         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5610                                p2p_group, p2p_ie);
5611         wpabuf_free(p2p_ie);
5612
5613         return ret;
5614 }
5615
5616
5617 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5618                           const u8 *dst, const u8 *bssid,
5619                           const u8 *ie, size_t ie_len, int ssi_signal)
5620 {
5621         if (wpa_s->global->p2p_disabled)
5622                 return 0;
5623         if (wpa_s->global->p2p == NULL)
5624                 return 0;
5625
5626         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5627                                  ie, ie_len)) {
5628         case P2P_PREQ_NOT_P2P:
5629                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5630                                  ssi_signal);
5631                 /* fall through */
5632         case P2P_PREQ_MALFORMED:
5633         case P2P_PREQ_NOT_LISTEN:
5634         case P2P_PREQ_NOT_PROCESSED:
5635         default: /* make gcc happy */
5636                 return 0;
5637         case P2P_PREQ_PROCESSED:
5638                 return 1;
5639         }
5640 }
5641
5642
5643 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5644                         const u8 *sa, const u8 *bssid,
5645                         u8 category, const u8 *data, size_t len, int freq)
5646 {
5647         if (wpa_s->global->p2p_disabled)
5648                 return;
5649         if (wpa_s->global->p2p == NULL)
5650                 return;
5651
5652         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5653                       freq);
5654 }
5655
5656
5657 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5658 {
5659         if (wpa_s->global->p2p_disabled)
5660                 return;
5661         if (wpa_s->global->p2p == NULL)
5662                 return;
5663
5664         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5665 }
5666
5667
5668 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5669 {
5670         p2p_group_deinit(wpa_s->p2p_group);
5671         wpa_s->p2p_group = NULL;
5672
5673         wpa_s->ap_configured_cb = NULL;
5674         wpa_s->ap_configured_cb_ctx = NULL;
5675         wpa_s->ap_configured_cb_data = NULL;
5676         wpa_s->connect_without_scan = NULL;
5677 }
5678
5679
5680 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5681 {
5682         wpa_s->p2p_long_listen = 0;
5683
5684         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5685                 return -1;
5686
5687         return p2p_reject(wpa_s->global->p2p, addr);
5688 }
5689
5690
5691 /* Invite to reinvoke a persistent group */
5692 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5693                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5694                     int ht40, int vht, int pref_freq)
5695 {
5696         enum p2p_invite_role role;
5697         u8 *bssid = NULL;
5698         int force_freq = 0;
5699         int res;
5700         int no_pref_freq_given = pref_freq == 0;
5701
5702         wpa_s->global->p2p_invite_group = NULL;
5703         if (peer_addr)
5704                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5705         else
5706                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5707
5708         wpa_s->p2p_persistent_go_freq = freq;
5709         wpa_s->p2p_go_ht40 = !!ht40;
5710         if (ssid->mode == WPAS_MODE_P2P_GO) {
5711                 role = P2P_INVITE_ROLE_GO;
5712                 if (peer_addr == NULL) {
5713                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5714                                    "address in invitation command");
5715                         return -1;
5716                 }
5717                 if (wpas_p2p_create_iface(wpa_s)) {
5718                         if (wpas_p2p_add_group_interface(wpa_s,
5719                                                          WPA_IF_P2P_GO) < 0) {
5720                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5721                                            "allocate a new interface for the "
5722                                            "group");
5723                                 return -1;
5724                         }
5725                         bssid = wpa_s->pending_interface_addr;
5726                 } else
5727                         bssid = wpa_s->own_addr;
5728         } else {
5729                 role = P2P_INVITE_ROLE_CLIENT;
5730                 peer_addr = ssid->bssid;
5731         }
5732         wpa_s->pending_invite_ssid_id = ssid->id;
5733
5734         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5735                                    role == P2P_INVITE_ROLE_GO);
5736         if (res)
5737                 return res;
5738
5739         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5740                 return -1;
5741
5742         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5743             no_pref_freq_given && pref_freq > 0 &&
5744             wpa_s->num_multichan_concurrent > 1 &&
5745             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5746                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5747                            pref_freq);
5748                 pref_freq = 0;
5749         }
5750
5751         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5752                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5753                           1, pref_freq, -1);
5754 }
5755
5756
5757 /* Invite to join an active group */
5758 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5759                           const u8 *peer_addr, const u8 *go_dev_addr)
5760 {
5761         struct wpa_global *global = wpa_s->global;
5762         enum p2p_invite_role role;
5763         u8 *bssid = NULL;
5764         struct wpa_ssid *ssid;
5765         int persistent;
5766         int freq = 0, force_freq = 0, pref_freq = 0;
5767         int res;
5768
5769         wpa_s->p2p_persistent_go_freq = 0;
5770         wpa_s->p2p_go_ht40 = 0;
5771         wpa_s->p2p_go_vht = 0;
5772
5773         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5774                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5775                         break;
5776         }
5777         if (wpa_s == NULL) {
5778                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5779                 return -1;
5780         }
5781
5782         ssid = wpa_s->current_ssid;
5783         if (ssid == NULL) {
5784                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5785                            "invitation");
5786                 return -1;
5787         }
5788
5789         wpa_s->global->p2p_invite_group = wpa_s;
5790         persistent = ssid->p2p_persistent_group &&
5791                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5792                                         ssid->ssid, ssid->ssid_len);
5793
5794         if (ssid->mode == WPAS_MODE_P2P_GO) {
5795                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5796                 bssid = wpa_s->own_addr;
5797                 if (go_dev_addr == NULL)
5798                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5799                 freq = ssid->frequency;
5800         } else {
5801                 role = P2P_INVITE_ROLE_CLIENT;
5802                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5803                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5804                                    "invite to current group");
5805                         return -1;
5806                 }
5807                 bssid = wpa_s->bssid;
5808                 if (go_dev_addr == NULL &&
5809                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5810                         go_dev_addr = wpa_s->go_dev_addr;
5811                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5812                         (int) wpa_s->assoc_freq;
5813         }
5814         wpa_s->parent->pending_invite_ssid_id = -1;
5815
5816         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5817                 return -1;
5818
5819         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5820                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5821         if (res)
5822                 return res;
5823         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5824
5825         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5826                           ssid->ssid, ssid->ssid_len, force_freq,
5827                           go_dev_addr, persistent, pref_freq, -1);
5828 }
5829
5830
5831 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5832 {
5833         struct wpa_ssid *ssid = wpa_s->current_ssid;
5834         const char *ssid_txt;
5835         u8 go_dev_addr[ETH_ALEN];
5836         int network_id = -1;
5837         int persistent;
5838         int freq;
5839         u8 ip[3 * 4];
5840         char ip_addr[100];
5841
5842         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5843                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5844                                      wpa_s->parent, NULL);
5845         }
5846
5847         if (!wpa_s->show_group_started || !ssid)
5848                 return;
5849
5850         wpa_s->show_group_started = 0;
5851
5852         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5853         os_memset(go_dev_addr, 0, ETH_ALEN);
5854         if (ssid->bssid_set)
5855                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5856         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5857                                                ssid->ssid_len);
5858         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5859
5860         if (wpa_s->global->p2p_group_formation == wpa_s)
5861                 wpa_s->global->p2p_group_formation = NULL;
5862
5863         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5864                 (int) wpa_s->assoc_freq;
5865
5866         ip_addr[0] = '\0';
5867         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5868                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5869                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5870                             ip[0], ip[1], ip[2], ip[3],
5871                             ip[4], ip[5], ip[6], ip[7],
5872                             ip[8], ip[9], ip[10], ip[11]);
5873         }
5874
5875         if (ssid->passphrase == NULL && ssid->psk_set) {
5876                 char psk[65];
5877                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5878                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5879                                "%s client ssid=\"%s\" freq=%d psk=%s "
5880                                "go_dev_addr=" MACSTR "%s%s",
5881                                wpa_s->ifname, ssid_txt, freq, psk,
5882                                MAC2STR(go_dev_addr),
5883                                persistent ? " [PERSISTENT]" : "", ip_addr);
5884         } else {
5885                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5886                                "%s client ssid=\"%s\" freq=%d "
5887                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5888                                wpa_s->ifname, ssid_txt, freq,
5889                                ssid->passphrase ? ssid->passphrase : "",
5890                                MAC2STR(go_dev_addr),
5891                                persistent ? " [PERSISTENT]" : "", ip_addr);
5892         }
5893
5894         if (persistent)
5895                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5896                                                              ssid, go_dev_addr);
5897         if (network_id < 0)
5898                 network_id = ssid->id;
5899         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5900 }
5901
5902
5903 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5904                           u32 interval1, u32 duration2, u32 interval2)
5905 {
5906         int ret;
5907
5908         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5909                 return -1;
5910
5911         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5912             wpa_s->current_ssid == NULL ||
5913             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5914                 return -1;
5915
5916         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5917                                wpa_s->own_addr, wpa_s->assoc_freq,
5918                                duration1, interval1, duration2, interval2);
5919         if (ret == 0)
5920                 wpa_s->waiting_presence_resp = 1;
5921
5922         return ret;
5923 }
5924
5925
5926 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5927                         unsigned int interval)
5928 {
5929         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5930                 return -1;
5931
5932         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5933 }
5934
5935
5936 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5937 {
5938         if (wpa_s->current_ssid == NULL) {
5939                 /*
5940                  * current_ssid can be cleared when P2P client interface gets
5941                  * disconnected, so assume this interface was used as P2P
5942                  * client.
5943                  */
5944                 return 1;
5945         }
5946         return wpa_s->current_ssid->p2p_group &&
5947                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5948 }
5949
5950
5951 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5952 {
5953         struct wpa_supplicant *wpa_s = eloop_ctx;
5954
5955         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5956                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5957                            "disabled");
5958                 return;
5959         }
5960
5961         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
5962                    "group");
5963         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
5964 }
5965
5966
5967 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
5968 {
5969         int timeout;
5970
5971         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5972                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5973
5974         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5975                 return;
5976
5977         timeout = wpa_s->conf->p2p_group_idle;
5978         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
5979             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
5980             timeout = P2P_MAX_CLIENT_IDLE;
5981
5982         if (timeout == 0)
5983                 return;
5984
5985         if (timeout < 0) {
5986                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
5987                         timeout = 0; /* special client mode no-timeout */
5988                 else
5989                         return;
5990         }
5991
5992         if (wpa_s->p2p_in_provisioning) {
5993                 /*
5994                  * Use the normal group formation timeout during the
5995                  * provisioning phase to avoid terminating this process too
5996                  * early due to group idle timeout.
5997                  */
5998                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5999                            "during provisioning");
6000                 return;
6001         }
6002
6003         if (wpa_s->show_group_started) {
6004                 /*
6005                  * Use the normal group formation timeout between the end of
6006                  * the provisioning phase and completion of 4-way handshake to
6007                  * avoid terminating this process too early due to group idle
6008                  * timeout.
6009                  */
6010                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6011                            "while waiting for initial 4-way handshake to "
6012                            "complete");
6013                 return;
6014         }
6015
6016         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6017                    timeout);
6018         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6019                                wpa_s, NULL);
6020 }
6021
6022
6023 /* Returns 1 if the interface was removed */
6024 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6025                           u16 reason_code, const u8 *ie, size_t ie_len,
6026                           int locally_generated)
6027 {
6028         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6029                 return 0;
6030
6031         if (!locally_generated)
6032                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6033                                  ie_len);
6034
6035         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6036             wpa_s->current_ssid &&
6037             wpa_s->current_ssid->p2p_group &&
6038             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6039                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6040                            "session is ending");
6041                 if (wpas_p2p_group_delete(wpa_s,
6042                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6043                     > 0)
6044                         return 1;
6045         }
6046
6047         return 0;
6048 }
6049
6050
6051 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6052                              u16 reason_code, const u8 *ie, size_t ie_len,
6053                              int locally_generated)
6054 {
6055         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6056                 return;
6057
6058         if (!locally_generated)
6059                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6060                                    ie_len);
6061 }
6062
6063
6064 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6065 {
6066         struct p2p_data *p2p = wpa_s->global->p2p;
6067
6068         if (p2p == NULL)
6069                 return;
6070
6071         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6072                 return;
6073
6074         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6075                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6076
6077         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6078                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6079
6080         if (wpa_s->wps &&
6081             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6082                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6083
6084         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6085                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6086
6087         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6088                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6089                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6090                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6091                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6092         }
6093
6094         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6095                 p2p_set_sec_dev_types(p2p,
6096                                       (void *) wpa_s->conf->sec_device_type,
6097                                       wpa_s->conf->num_sec_device_types);
6098
6099         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6100                 int i;
6101                 p2p_remove_wps_vendor_extensions(p2p);
6102                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6103                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6104                                 continue;
6105                         p2p_add_wps_vendor_extension(
6106                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6107                 }
6108         }
6109
6110         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6111             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6112                 char country[3];
6113                 country[0] = wpa_s->conf->country[0];
6114                 country[1] = wpa_s->conf->country[1];
6115                 country[2] = 0x04;
6116                 p2p_set_country(p2p, country);
6117         }
6118
6119         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6120                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6121                                      wpa_s->conf->p2p_ssid_postfix ?
6122                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6123                                      0);
6124         }
6125
6126         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6127                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6128
6129         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6130                 u8 reg_class, channel;
6131                 int ret;
6132                 unsigned int r;
6133                 if (wpa_s->conf->p2p_listen_reg_class &&
6134                     wpa_s->conf->p2p_listen_channel) {
6135                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6136                         channel = wpa_s->conf->p2p_listen_channel;
6137                 } else {
6138                         reg_class = 81;
6139                         /*
6140                          * Pick one of the social channels randomly as the
6141                          * listen channel.
6142                          */
6143                         os_get_random((u8 *) &r, sizeof(r));
6144                         channel = 1 + (r % 3) * 5;
6145                 }
6146                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6147                 if (ret)
6148                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6149                                    "failed: %d", ret);
6150         }
6151         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6152                 u8 op_reg_class, op_channel, cfg_op_channel;
6153                 int ret = 0;
6154                 unsigned int r;
6155                 if (wpa_s->conf->p2p_oper_reg_class &&
6156                     wpa_s->conf->p2p_oper_channel) {
6157                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6158                         op_channel = wpa_s->conf->p2p_oper_channel;
6159                         cfg_op_channel = 1;
6160                 } else {
6161                         op_reg_class = 81;
6162                         /*
6163                          * Use random operation channel from (1, 6, 11)
6164                          *if no other preference is indicated.
6165                          */
6166                         os_get_random((u8 *) &r, sizeof(r));
6167                         op_channel = 1 + (r % 3) * 5;
6168                         cfg_op_channel = 0;
6169                 }
6170                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6171                                            cfg_op_channel);
6172                 if (ret)
6173                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6174                                    "failed: %d", ret);
6175         }
6176
6177         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6178                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6179                                       wpa_s->conf->p2p_pref_chan) < 0) {
6180                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6181                                    "update failed");
6182                 }
6183
6184                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6185                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6186                                    "update failed");
6187                 }
6188         }
6189 }
6190
6191
6192 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6193                      int duration)
6194 {
6195         if (!wpa_s->ap_iface)
6196                 return -1;
6197         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6198                                    duration);
6199 }
6200
6201
6202 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6203 {
6204         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6205                 return -1;
6206
6207         wpa_s->global->cross_connection = enabled;
6208         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6209
6210         if (!enabled) {
6211                 struct wpa_supplicant *iface;
6212
6213                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6214                 {
6215                         if (iface->cross_connect_enabled == 0)
6216                                 continue;
6217
6218                         iface->cross_connect_enabled = 0;
6219                         iface->cross_connect_in_use = 0;
6220                         wpa_msg_global(iface->parent, MSG_INFO,
6221                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6222                                        iface->ifname,
6223                                        iface->cross_connect_uplink);
6224                 }
6225         }
6226
6227         return 0;
6228 }
6229
6230
6231 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6232 {
6233         struct wpa_supplicant *iface;
6234
6235         if (!uplink->global->cross_connection)
6236                 return;
6237
6238         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6239                 if (!iface->cross_connect_enabled)
6240                         continue;
6241                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6242                     0)
6243                         continue;
6244                 if (iface->ap_iface == NULL)
6245                         continue;
6246                 if (iface->cross_connect_in_use)
6247                         continue;
6248
6249                 iface->cross_connect_in_use = 1;
6250                 wpa_msg_global(iface->parent, MSG_INFO,
6251                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6252                                iface->ifname, iface->cross_connect_uplink);
6253         }
6254 }
6255
6256
6257 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6258 {
6259         struct wpa_supplicant *iface;
6260
6261         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6262                 if (!iface->cross_connect_enabled)
6263                         continue;
6264                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6265                     0)
6266                         continue;
6267                 if (!iface->cross_connect_in_use)
6268                         continue;
6269
6270                 wpa_msg_global(iface->parent, MSG_INFO,
6271                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6272                                iface->ifname, iface->cross_connect_uplink);
6273                 iface->cross_connect_in_use = 0;
6274         }
6275 }
6276
6277
6278 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6279 {
6280         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6281             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6282             wpa_s->cross_connect_disallowed)
6283                 wpas_p2p_disable_cross_connect(wpa_s);
6284         else
6285                 wpas_p2p_enable_cross_connect(wpa_s);
6286         if (!wpa_s->ap_iface &&
6287             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6288                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6289 }
6290
6291
6292 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6293 {
6294         wpas_p2p_disable_cross_connect(wpa_s);
6295         if (!wpa_s->ap_iface &&
6296             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6297                                          wpa_s, NULL))
6298                 wpas_p2p_set_group_idle_timeout(wpa_s);
6299 }
6300
6301
6302 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6303 {
6304         struct wpa_supplicant *iface;
6305
6306         if (!wpa_s->global->cross_connection)
6307                 return;
6308
6309         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6310                 if (iface == wpa_s)
6311                         continue;
6312                 if (iface->drv_flags &
6313                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6314                         continue;
6315                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6316                         continue;
6317
6318                 wpa_s->cross_connect_enabled = 1;
6319                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6320                            sizeof(wpa_s->cross_connect_uplink));
6321                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6322                            "%s to %s whenever uplink is available",
6323                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6324
6325                 if (iface->ap_iface || iface->current_ssid == NULL ||
6326                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6327                     iface->cross_connect_disallowed ||
6328                     iface->wpa_state != WPA_COMPLETED)
6329                         break;
6330
6331                 wpa_s->cross_connect_in_use = 1;
6332                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6333                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6334                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6335                 break;
6336         }
6337 }
6338
6339
6340 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6341 {
6342         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6343             !wpa_s->p2p_in_provisioning)
6344                 return 0; /* not P2P client operation */
6345
6346         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6347                    "session overlap");
6348         if (wpa_s != wpa_s->parent)
6349                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6350         wpas_p2p_group_formation_failed(wpa_s);
6351         return 1;
6352 }
6353
6354
6355 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6356 {
6357         struct p2p_channels chan, cli_chan;
6358
6359         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6360                 return;
6361
6362         os_memset(&chan, 0, sizeof(chan));
6363         os_memset(&cli_chan, 0, sizeof(cli_chan));
6364         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6365                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6366                            "channel list");
6367                 return;
6368         }
6369
6370         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6371 }
6372
6373
6374 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6375                                      struct wpa_scan_results *scan_res)
6376 {
6377         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6378 }
6379
6380
6381 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6382 {
6383         struct wpa_global *global = wpa_s->global;
6384         int found = 0;
6385         const u8 *peer;
6386
6387         if (global->p2p == NULL)
6388                 return -1;
6389
6390         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6391
6392         if (wpa_s->pending_interface_name[0] &&
6393             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6394                 found = 1;
6395
6396         peer = p2p_get_go_neg_peer(global->p2p);
6397         if (peer) {
6398                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6399                            MACSTR, MAC2STR(peer));
6400                 p2p_unauthorize(global->p2p, peer);
6401                 found = 1;
6402         }
6403
6404         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6405                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6406                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6407                 found = 1;
6408         }
6409
6410         if (wpa_s->pending_pd_before_join) {
6411                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6412                 wpa_s->pending_pd_before_join = 0;
6413                 found = 1;
6414         }
6415
6416         wpas_p2p_stop_find(wpa_s);
6417
6418         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6419                 if (wpa_s == global->p2p_group_formation &&
6420                     (wpa_s->p2p_in_provisioning ||
6421                      wpa_s->parent->pending_interface_type ==
6422                      WPA_IF_P2P_CLIENT)) {
6423                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6424                                    "formation found - cancelling",
6425                                    wpa_s->ifname);
6426                         found = 1;
6427                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6428                                              wpa_s->parent, NULL);
6429                         if (wpa_s->p2p_in_provisioning) {
6430                                 wpas_group_formation_completed(wpa_s, 0);
6431                                 break;
6432                         }
6433                         wpas_p2p_group_delete(wpa_s,
6434                                               P2P_GROUP_REMOVAL_REQUESTED);
6435                         break;
6436                 }
6437         }
6438
6439         if (!found) {
6440                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6441                 return -1;
6442         }
6443
6444         return 0;
6445 }
6446
6447
6448 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6449 {
6450         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6451                 return;
6452
6453         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6454                    "being available anymore");
6455         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6456 }
6457
6458
6459 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6460                                    int freq_24, int freq_5, int freq_overall)
6461 {
6462         struct p2p_data *p2p = wpa_s->global->p2p;
6463         if (p2p == NULL)
6464                 return;
6465         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6466 }
6467
6468
6469 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6470 {
6471         u8 peer[ETH_ALEN];
6472         struct p2p_data *p2p = wpa_s->global->p2p;
6473
6474         if (p2p == NULL)
6475                 return -1;
6476
6477         if (hwaddr_aton(addr, peer))
6478                 return -1;
6479
6480         return p2p_unauthorize(p2p, peer);
6481 }
6482
6483
6484 /**
6485  * wpas_p2p_disconnect - Disconnect from a P2P Group
6486  * @wpa_s: Pointer to wpa_supplicant data
6487  * Returns: 0 on success, -1 on failure
6488  *
6489  * This can be used to disconnect from a group in which the local end is a P2P
6490  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6491  * virtual network interface was created for this group, that interface will be
6492  * removed. Otherwise, only the configured P2P group network will be removed
6493  * from the interface.
6494  */
6495 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6496 {
6497
6498         if (wpa_s == NULL)
6499                 return -1;
6500
6501         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6502                 -1 : 0;
6503 }
6504
6505
6506 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6507 {
6508         int ret;
6509
6510         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6511                 return 0;
6512
6513         ret = p2p_in_progress(wpa_s->global->p2p);
6514         if (ret == 0) {
6515                 /*
6516                  * Check whether there is an ongoing WPS provisioning step (or
6517                  * other parts of group formation) on another interface since
6518                  * p2p_in_progress() does not report this to avoid issues for
6519                  * scans during such provisioning step.
6520                  */
6521                 if (wpa_s->global->p2p_group_formation &&
6522                     wpa_s->global->p2p_group_formation != wpa_s) {
6523                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6524                                 "in group formation",
6525                                 wpa_s->global->p2p_group_formation->ifname);
6526                         ret = 1;
6527                 }
6528         }
6529
6530         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6531                 struct os_reltime now;
6532                 os_get_reltime(&now);
6533                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6534                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6535                         /* Wait for the first client has expired */
6536                         wpa_s->global->p2p_go_wait_client.sec = 0;
6537                 } else {
6538                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6539                         ret = 1;
6540                 }
6541         }
6542
6543         return ret;
6544 }
6545
6546
6547 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6548                               struct wpa_ssid *ssid)
6549 {
6550         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6551             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6552                                  wpa_s->parent, NULL) > 0) {
6553                 /**
6554                  * Remove the network by scheduling the group formation
6555                  * timeout to happen immediately. The teardown code
6556                  * needs to be scheduled to run asynch later so that we
6557                  * don't delete data from under ourselves unexpectedly.
6558                  * Calling wpas_p2p_group_formation_timeout directly
6559                  * causes a series of crashes in WPS failure scenarios.
6560                  */
6561                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6562                            "P2P group network getting removed");
6563                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6564                                        wpa_s->parent, NULL);
6565         }
6566 }
6567
6568
6569 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6570                                           const u8 *addr, const u8 *ssid,
6571                                           size_t ssid_len)
6572 {
6573         struct wpa_ssid *s;
6574         size_t i;
6575
6576         for (s = wpa_s->conf->ssid; s; s = s->next) {
6577                 if (s->disabled != 2)
6578                         continue;
6579                 if (ssid &&
6580                     (ssid_len != s->ssid_len ||
6581                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6582                         continue;
6583                 if (addr == NULL) {
6584                         if (s->mode == WPAS_MODE_P2P_GO)
6585                                 return s;
6586                         continue;
6587                 }
6588                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6589                         return s; /* peer is GO in the persistent group */
6590                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6591                         continue;
6592                 for (i = 0; i < s->num_p2p_clients; i++) {
6593                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6594                                       addr, ETH_ALEN) == 0)
6595                                 return s; /* peer is P2P client in persistent
6596                                            * group */
6597                 }
6598         }
6599
6600         return NULL;
6601 }
6602
6603
6604 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6605                                        const u8 *addr)
6606 {
6607         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6608                                  wpa_s->parent, NULL) > 0) {
6609                 /*
6610                  * This can happen if WPS provisioning step is not terminated
6611                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6612                  * peer was able to connect, there is no need to time out group
6613                  * formation after this, though. In addition, this is used with
6614                  * the initial connection wait on the GO as a separate formation
6615                  * timeout and as such, expected to be hit after the initial WPS
6616                  * provisioning step.
6617                  */
6618                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6619         }
6620         if (!wpa_s->p2p_go_group_formation_completed) {
6621                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6622                 wpa_s->p2p_go_group_formation_completed = 1;
6623                 wpa_s->global->p2p_group_formation = NULL;
6624                 wpa_s->p2p_in_provisioning = 0;
6625         }
6626         wpa_s->global->p2p_go_wait_client.sec = 0;
6627         if (addr == NULL)
6628                 return;
6629         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6630 }
6631
6632
6633 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6634                                         int group_added)
6635 {
6636         struct wpa_supplicant *group = wpa_s;
6637         if (wpa_s->global->p2p_group_formation)
6638                 group = wpa_s->global->p2p_group_formation;
6639         wpa_s = wpa_s->parent;
6640         offchannel_send_action_done(wpa_s);
6641         if (group_added)
6642                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6643         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6644         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6645                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6646                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6647                          wpa_s->p2p_persistent_id,
6648                          wpa_s->p2p_pd_before_go_neg,
6649                          wpa_s->p2p_go_ht40,
6650                          wpa_s->p2p_go_vht);
6651 }
6652
6653
6654 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6655 {
6656         if (!wpa_s->p2p_fallback_to_go_neg ||
6657             wpa_s->p2p_in_provisioning <= 5)
6658                 return 0;
6659
6660         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6661                 return 0; /* peer operating as a GO */
6662
6663         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6664                 "fallback to GO Negotiation");
6665         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6666
6667         return 1;
6668 }
6669
6670
6671 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6672 {
6673         struct wpa_supplicant *ifs;
6674
6675         if (wpa_s->wpa_state > WPA_SCANNING) {
6676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6677                         "concurrent operation",
6678                         P2P_CONCURRENT_SEARCH_DELAY);
6679                 return P2P_CONCURRENT_SEARCH_DELAY;
6680         }
6681
6682         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6683                          radio_list) {
6684                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6685                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6686                                 "delay due to concurrent operation on "
6687                                 "interface %s",
6688                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
6689                         return P2P_CONCURRENT_SEARCH_DELAY;
6690                 }
6691         }
6692
6693         return 0;
6694 }
6695
6696
6697 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6698                                      struct wpa_ssid *s, const u8 *addr,
6699                                      int iface_addr)
6700 {
6701         struct psk_list_entry *psk, *tmp;
6702         int changed = 0;
6703
6704         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6705                               list) {
6706                 if ((iface_addr && !psk->p2p &&
6707                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6708                     (!iface_addr && psk->p2p &&
6709                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6710                         wpa_dbg(wpa_s, MSG_DEBUG,
6711                                 "P2P: Remove persistent group PSK list entry for "
6712                                 MACSTR " p2p=%u",
6713                                 MAC2STR(psk->addr), psk->p2p);
6714                         dl_list_del(&psk->list);
6715                         os_free(psk);
6716                         changed++;
6717                 }
6718         }
6719
6720         return changed;
6721 }
6722
6723
6724 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6725                          const u8 *p2p_dev_addr,
6726                          const u8 *psk, size_t psk_len)
6727 {
6728         struct wpa_ssid *ssid = wpa_s->current_ssid;
6729         struct wpa_ssid *persistent;
6730         struct psk_list_entry *p;
6731
6732         if (psk_len != sizeof(p->psk))
6733                 return;
6734
6735         if (p2p_dev_addr) {
6736                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6737                         " p2p_dev_addr=" MACSTR,
6738                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6739                 if (is_zero_ether_addr(p2p_dev_addr))
6740                         p2p_dev_addr = NULL;
6741         } else {
6742                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6743                         MAC2STR(mac_addr));
6744         }
6745
6746         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6747                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6748                 /* To be added to persistent group once created */
6749                 if (wpa_s->global->add_psk == NULL) {
6750                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6751                         if (wpa_s->global->add_psk == NULL)
6752                                 return;
6753                 }
6754                 p = wpa_s->global->add_psk;
6755                 if (p2p_dev_addr) {
6756                         p->p2p = 1;
6757                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6758                 } else {
6759                         p->p2p = 0;
6760                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6761                 }
6762                 os_memcpy(p->psk, psk, psk_len);
6763                 return;
6764         }
6765
6766         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6767                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6768                 return;
6769         }
6770
6771         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6772                                              ssid->ssid_len);
6773         if (!persistent) {
6774                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6775                 return;
6776         }
6777
6778         p = os_zalloc(sizeof(*p));
6779         if (p == NULL)
6780                 return;
6781         if (p2p_dev_addr) {
6782                 p->p2p = 1;
6783                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6784         } else {
6785                 p->p2p = 0;
6786                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6787         }
6788         os_memcpy(p->psk, psk, psk_len);
6789
6790         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS) {
6791                 struct psk_list_entry *last;
6792                 last = dl_list_last(&persistent->psk_list,
6793                                     struct psk_list_entry, list);
6794                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6795                         MACSTR " (p2p=%u) to make room for a new one",
6796                         MAC2STR(last->addr), last->p2p);
6797                 dl_list_del(&last->list);
6798                 os_free(last);
6799         }
6800
6801         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6802                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6803                                   p2p_dev_addr == NULL);
6804         if (p2p_dev_addr) {
6805                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6806                         MACSTR, MAC2STR(p2p_dev_addr));
6807         } else {
6808                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6809                         MAC2STR(mac_addr));
6810         }
6811         dl_list_add(&persistent->psk_list, &p->list);
6812
6813         if (wpa_s->parent->conf->update_config &&
6814             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6815                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6816 }
6817
6818
6819 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6820                                 struct wpa_ssid *s, const u8 *addr,
6821                                 int iface_addr)
6822 {
6823         int res;
6824
6825         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6826         if (res > 0 && wpa_s->conf->update_config &&
6827             wpa_config_write(wpa_s->confname, wpa_s->conf))
6828                 wpa_dbg(wpa_s, MSG_DEBUG,
6829                         "P2P: Failed to update configuration");
6830 }
6831
6832
6833 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6834                                       const u8 *peer, int iface_addr)
6835 {
6836         struct hostapd_data *hapd;
6837         struct hostapd_wpa_psk *psk, *prev, *rem;
6838         struct sta_info *sta;
6839
6840         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6841             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6842                 return;
6843
6844         /* Remove per-station PSK entry */
6845         hapd = wpa_s->ap_iface->bss[0];
6846         prev = NULL;
6847         psk = hapd->conf->ssid.wpa_psk;
6848         while (psk) {
6849                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6850                     (!iface_addr &&
6851                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6852                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6853                                 MACSTR " iface_addr=%d",
6854                                 MAC2STR(peer), iface_addr);
6855                         if (prev)
6856                                 prev->next = psk->next;
6857                         else
6858                                 hapd->conf->ssid.wpa_psk = psk->next;
6859                         rem = psk;
6860                         psk = psk->next;
6861                         os_free(rem);
6862                 } else {
6863                         prev = psk;
6864                         psk = psk->next;
6865                 }
6866         }
6867
6868         /* Disconnect from group */
6869         if (iface_addr)
6870                 sta = ap_get_sta(hapd, peer);
6871         else
6872                 sta = ap_get_sta_p2p(hapd, peer);
6873         if (sta) {
6874                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6875                         " (iface_addr=%d) from group",
6876                         MAC2STR(peer), iface_addr);
6877                 hostapd_drv_sta_deauth(hapd, sta->addr,
6878                                        WLAN_REASON_DEAUTH_LEAVING);
6879                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6880         }
6881 }
6882
6883
6884 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6885                             int iface_addr)
6886 {
6887         struct wpa_ssid *s;
6888         struct wpa_supplicant *w;
6889
6890         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6891
6892         /* Remove from any persistent group */
6893         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6894                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6895                         continue;
6896                 if (!iface_addr)
6897                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6898                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6899         }
6900
6901         /* Remove from any operating group */
6902         for (w = wpa_s->global->ifaces; w; w = w->next)
6903                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6904 }
6905
6906
6907 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6908 {
6909         struct wpa_supplicant *wpa_s = eloop_ctx;
6910         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6911 }
6912
6913
6914 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
6915 {
6916         struct wpa_supplicant *wpa_s = eloop_ctx;
6917
6918         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
6919         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
6920 }
6921
6922
6923 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
6924                                         struct wpa_ssid *ssid)
6925 {
6926         struct wpa_supplicant *iface;
6927
6928         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6929                 if (!iface->current_ssid ||
6930                     iface->current_ssid->frequency == freq ||
6931                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
6932                      !iface->current_ssid->p2p_group))
6933                         continue;
6934
6935                 /* Remove the connection with least priority */
6936                 if (!wpas_is_p2p_prioritized(iface)) {
6937                         /* STA connection has priority over existing
6938                          * P2P connection, so remove the interface. */
6939                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
6940                         eloop_register_timeout(0, 0,
6941                                                wpas_p2p_group_freq_conflict,
6942                                                iface, NULL);
6943                         /* If connection in progress is P2P connection, do not
6944                          * proceed for the connection. */
6945                         if (wpa_s == iface)
6946                                 return -1;
6947                         else
6948                                 return 0;
6949                 } else {
6950                         /* P2P connection has priority, disable the STA network
6951                          */
6952                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
6953                                                        ssid);
6954                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
6955                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
6956                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
6957                                   ETH_ALEN);
6958                         /* If P2P connection is in progress, continue
6959                          * connecting...*/
6960                         if (wpa_s == iface)
6961                                 return 0;
6962                         else
6963                                 return -1;
6964                 }
6965         }
6966
6967         return 0;
6968 }
6969
6970
6971 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
6972 {
6973         struct wpa_ssid *ssid = wpa_s->current_ssid;
6974
6975         if (ssid == NULL || !ssid->p2p_group)
6976                 return 0;
6977
6978         if (wpa_s->p2p_last_4way_hs_fail &&
6979             wpa_s->p2p_last_4way_hs_fail == ssid) {
6980                 u8 go_dev_addr[ETH_ALEN];
6981                 struct wpa_ssid *persistent;
6982
6983                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
6984                                               ssid->ssid,
6985                                               ssid->ssid_len) <= 0) {
6986                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
6987                         goto disconnect;
6988                 }
6989
6990                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
6991                         MACSTR, MAC2STR(go_dev_addr));
6992                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
6993                                                      ssid->ssid,
6994                                                      ssid->ssid_len);
6995                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
6996                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
6997                         goto disconnect;
6998                 }
6999                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7000                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7001                                persistent->id);
7002         disconnect:
7003                 wpa_s->p2p_last_4way_hs_fail = NULL;
7004                 /*
7005                  * Remove the group from a timeout to avoid issues with caller
7006                  * continuing to use the interface if this is on a P2P group
7007                  * interface.
7008                  */
7009                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7010                                        wpa_s, NULL);
7011                 return 1;
7012         }
7013
7014         wpa_s->p2p_last_4way_hs_fail = ssid;
7015         return 0;
7016 }
7017
7018
7019 #ifdef CONFIG_WPS_NFC
7020
7021 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7022                                              struct wpabuf *p2p)
7023 {
7024         struct wpabuf *ret;
7025         size_t wsc_len;
7026
7027         if (p2p == NULL) {
7028                 wpabuf_free(wsc);
7029                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7030                 return NULL;
7031         }
7032
7033         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7034         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7035         if (ret == NULL) {
7036                 wpabuf_free(wsc);
7037                 wpabuf_free(p2p);
7038                 return NULL;
7039         }
7040
7041         wpabuf_put_be16(ret, wsc_len);
7042         if (wsc)
7043                 wpabuf_put_buf(ret, wsc);
7044         wpabuf_put_be16(ret, wpabuf_len(p2p));
7045         wpabuf_put_buf(ret, p2p);
7046
7047         wpabuf_free(wsc);
7048         wpabuf_free(p2p);
7049         wpa_hexdump_buf(MSG_DEBUG,
7050                         "P2P: Generated NFC connection handover message", ret);
7051
7052         if (ndef && ret) {
7053                 struct wpabuf *tmp;
7054                 tmp = ndef_build_p2p(ret);
7055                 wpabuf_free(ret);
7056                 if (tmp == NULL) {
7057                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7058                         return NULL;
7059                 }
7060                 ret = tmp;
7061         }
7062
7063         return ret;
7064 }
7065
7066
7067 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7068                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7069 {
7070         struct wpa_supplicant *iface;
7071
7072         if (go_dev_addr)
7073                 os_memset(go_dev_addr, 0, ETH_ALEN);
7074         if (ssid)
7075                 *ssid = NULL;
7076         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7077                 if (iface->wpa_state < WPA_ASSOCIATING ||
7078                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7079                     !iface->current_ssid->p2p_group ||
7080                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7081                         continue;
7082                 if (ssid)
7083                         *ssid = iface->current_ssid;
7084                 if (go_dev_addr)
7085                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7086                 return iface->assoc_freq;
7087         }
7088         return 0;
7089 }
7090
7091
7092 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7093                                           int ndef)
7094 {
7095         struct wpabuf *wsc, *p2p;
7096         struct wpa_ssid *ssid;
7097         u8 go_dev_addr[ETH_ALEN];
7098         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7099
7100         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7101                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7102                 return NULL;
7103         }
7104
7105         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7106             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7107                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7108                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7109                 return NULL;
7110         }
7111
7112         if (cli_freq == 0) {
7113                 wsc = wps_build_nfc_handover_req_p2p(
7114                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7115         } else
7116                 wsc = NULL;
7117         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7118                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7119                                          ssid ? ssid->ssid_len : 0);
7120
7121         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7122 }
7123
7124
7125 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7126                                           int ndef, int tag)
7127 {
7128         struct wpabuf *wsc, *p2p;
7129         struct wpa_ssid *ssid;
7130         u8 go_dev_addr[ETH_ALEN];
7131         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7132
7133         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7134                 return NULL;
7135
7136         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7137             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7138                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7139                 return NULL;
7140
7141         if (cli_freq == 0) {
7142                 wsc = wps_build_nfc_handover_sel_p2p(
7143                         wpa_s->parent->wps,
7144                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7145                         DEV_PW_NFC_CONNECTION_HANDOVER,
7146                         wpa_s->conf->wps_nfc_dh_pubkey,
7147                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7148         } else
7149                 wsc = NULL;
7150         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7151                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7152                                          ssid ? ssid->ssid_len : 0);
7153
7154         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7155 }
7156
7157
7158 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7159                                    struct p2p_nfc_params *params)
7160 {
7161         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7162                    "connection handover (freq=%d)",
7163                    params->go_freq);
7164
7165         if (params->go_freq && params->go_ssid_len) {
7166                 wpa_s->p2p_wps_method = WPS_NFC;
7167                 wpa_s->pending_join_wps_method = WPS_NFC;
7168                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7169                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7170                           ETH_ALEN);
7171                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7172                                            params->go_ssid,
7173                                            params->go_ssid_len);
7174         }
7175
7176         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7177                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7178                                 params->go_freq, -1, 0, 1, 1);
7179 }
7180
7181
7182 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7183                                   struct p2p_nfc_params *params, int tag)
7184 {
7185         int res, persistent;
7186         struct wpa_ssid *ssid;
7187
7188         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7189                    "connection handover");
7190         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7191                 ssid = wpa_s->current_ssid;
7192                 if (ssid == NULL)
7193                         continue;
7194                 if (ssid->mode != WPAS_MODE_P2P_GO)
7195                         continue;
7196                 if (wpa_s->ap_iface == NULL)
7197                         continue;
7198                 break;
7199         }
7200         if (wpa_s == NULL) {
7201                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7202                 return -1;
7203         }
7204
7205         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7206             DEV_PW_NFC_CONNECTION_HANDOVER &&
7207             !wpa_s->parent->p2p_oob_dev_pw) {
7208                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7209                 return -1;
7210         }
7211         res = wpas_ap_wps_add_nfc_pw(
7212                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7213                 wpa_s->parent->p2p_oob_dev_pw,
7214                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7215                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7216         if (res)
7217                 return res;
7218
7219         if (!tag) {
7220                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7221                 return 0;
7222         }
7223
7224         if (!params->peer ||
7225             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7226                 return 0;
7227
7228         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7229                    " to join", MAC2STR(params->peer->p2p_device_addr));
7230
7231         wpa_s->global->p2p_invite_group = wpa_s;
7232         persistent = ssid->p2p_persistent_group &&
7233                 wpas_p2p_get_persistent(wpa_s->parent,
7234                                         params->peer->p2p_device_addr,
7235                                         ssid->ssid, ssid->ssid_len);
7236         wpa_s->parent->pending_invite_ssid_id = -1;
7237
7238         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7239                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7240                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7241                           wpa_s->global->p2p_dev_addr, persistent, 0,
7242                           wpa_s->parent->p2p_oob_dev_pw_id);
7243 }
7244
7245
7246 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7247                                     struct p2p_nfc_params *params,
7248                                     int forced_freq)
7249 {
7250         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7251                    "connection handover");
7252         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7253                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7254                                 forced_freq, -1, 0, 1, 1);
7255 }
7256
7257
7258 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7259                                     struct p2p_nfc_params *params,
7260                                     int forced_freq)
7261 {
7262         int res;
7263
7264         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7265                    "connection handover");
7266         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7267                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7268                                forced_freq, -1, 0, 1, 1);
7269         if (res)
7270                 return res;
7271
7272         res = wpas_p2p_listen(wpa_s, 60);
7273         if (res) {
7274                 p2p_unauthorize(wpa_s->global->p2p,
7275                                 params->peer->p2p_device_addr);
7276         }
7277
7278         return res;
7279 }
7280
7281
7282 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7283                                             const struct wpabuf *data,
7284                                             int sel, int tag, int forced_freq)
7285 {
7286         const u8 *pos, *end;
7287         u16 len, id;
7288         struct p2p_nfc_params params;
7289         int res;
7290
7291         os_memset(&params, 0, sizeof(params));
7292         params.sel = sel;
7293
7294         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7295
7296         pos = wpabuf_head(data);
7297         end = pos + wpabuf_len(data);
7298
7299         if (end - pos < 2) {
7300                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7301                            "attributes");
7302                 return -1;
7303         }
7304         len = WPA_GET_BE16(pos);
7305         pos += 2;
7306         if (pos + len > end) {
7307                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7308                            "attributes");
7309                 return -1;
7310         }
7311         params.wsc_attr = pos;
7312         params.wsc_len = len;
7313         pos += len;
7314
7315         if (end - pos < 2) {
7316                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7317                            "attributes");
7318                 return -1;
7319         }
7320         len = WPA_GET_BE16(pos);
7321         pos += 2;
7322         if (pos + len > end) {
7323                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7324                            "attributes");
7325                 return -1;
7326         }
7327         params.p2p_attr = pos;
7328         params.p2p_len = len;
7329         pos += len;
7330
7331         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7332                     params.wsc_attr, params.wsc_len);
7333         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7334                     params.p2p_attr, params.p2p_len);
7335         if (pos < end) {
7336                 wpa_hexdump(MSG_DEBUG,
7337                             "P2P: Ignored extra data after P2P attributes",
7338                             pos, end - pos);
7339         }
7340
7341         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7342         if (res)
7343                 return res;
7344
7345         if (params.next_step == NO_ACTION)
7346                 return 0;
7347
7348         if (params.next_step == BOTH_GO) {
7349                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7350                         MAC2STR(params.peer->p2p_device_addr));
7351                 return 0;
7352         }
7353
7354         if (params.next_step == PEER_CLIENT) {
7355                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7356                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7357                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7358                                 " ssid=\"%s\"",
7359                                 MAC2STR(params.peer->p2p_device_addr),
7360                                 params.go_freq,
7361                                 MAC2STR(params.go_dev_addr),
7362                                 wpa_ssid_txt(params.go_ssid,
7363                                              params.go_ssid_len));
7364                 } else {
7365                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7366                                 "peer=" MACSTR " freq=%d",
7367                                 MAC2STR(params.peer->p2p_device_addr),
7368                                 params.go_freq);
7369                 }
7370                 return 0;
7371         }
7372
7373         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7374                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7375                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7376                 return 0;
7377         }
7378
7379         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7380         wpa_s->p2p_oob_dev_pw = NULL;
7381
7382         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7383                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7384                            "received");
7385                 return -1;
7386         }
7387
7388         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7389         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7390         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7391                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7392         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7393                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7394         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7395
7396         if (tag) {
7397                 if (id < 0x10) {
7398                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7399                                    "peer OOB Device Password Id %u", id);
7400                         return -1;
7401                 }
7402                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7403                            "Device Password Id %u", id);
7404                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7405                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7406                                 params.oob_dev_pw_len -
7407                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7408                 wpa_s->p2p_oob_dev_pw_id = id;
7409                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7410                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7411                         params.oob_dev_pw_len -
7412                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7413                 if (wpa_s->p2p_oob_dev_pw == NULL)
7414                         return -1;
7415
7416                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7417                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7418                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7419                         return -1;
7420         } else {
7421                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7422                            "without Device Password");
7423                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7424         }
7425
7426         switch (params.next_step) {
7427         case NO_ACTION:
7428         case BOTH_GO:
7429         case PEER_CLIENT:
7430                 /* already covered above */
7431                 return 0;
7432         case JOIN_GROUP:
7433                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7434         case AUTH_JOIN:
7435                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7436         case INIT_GO_NEG:
7437                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7438         case RESP_GO_NEG:
7439                 /* TODO: use own OOB Dev Pw */
7440                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7441         }
7442
7443         return -1;
7444 }
7445
7446
7447 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7448                              const struct wpabuf *data, int forced_freq)
7449 {
7450         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7451                 return -1;
7452
7453         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7454 }
7455
7456
7457 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7458                                  const struct wpabuf *req,
7459                                  const struct wpabuf *sel, int forced_freq)
7460 {
7461         struct wpabuf *tmp;
7462         int ret;
7463
7464         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7465                 return -1;
7466
7467         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7468
7469         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7470                           wpabuf_head(req), wpabuf_len(req));
7471         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7472                           wpabuf_head(sel), wpabuf_len(sel));
7473         if (forced_freq)
7474                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7475         tmp = ndef_parse_p2p(init ? sel : req);
7476         if (tmp == NULL) {
7477                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7478                 return -1;
7479         }
7480
7481         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7482                                                forced_freq);
7483         wpabuf_free(tmp);
7484
7485         return ret;
7486 }
7487
7488
7489 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7490 {
7491         const u8 *if_addr;
7492         int go_intent = wpa_s->conf->p2p_go_intent;
7493         struct wpa_supplicant *iface;
7494
7495         if (wpa_s->global->p2p == NULL)
7496                 return -1;
7497
7498         if (!enabled) {
7499                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7500                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7501                 {
7502                         if (!iface->ap_iface)
7503                                 continue;
7504                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7505                 }
7506                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7507                                                  0, NULL);
7508                 if (wpa_s->p2p_nfc_tag_enabled)
7509                         wpas_p2p_remove_pending_group_interface(wpa_s);
7510                 wpa_s->p2p_nfc_tag_enabled = 0;
7511                 return 0;
7512         }
7513
7514         if (wpa_s->global->p2p_disabled)
7515                 return -1;
7516
7517         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7518             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7519             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7520             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7521                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7522                            "to allow static handover cases");
7523                 return -1;
7524         }
7525
7526         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7527
7528         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7529         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7530         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7531         if (wpa_s->p2p_oob_dev_pw == NULL)
7532                 return -1;
7533         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7534
7535         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7536
7537         if (wpa_s->create_p2p_iface) {
7538                 enum wpa_driver_if_type iftype;
7539                 /* Prepare to add a new interface for the group */
7540                 iftype = WPA_IF_P2P_GROUP;
7541                 if (go_intent == 15)
7542                         iftype = WPA_IF_P2P_GO;
7543                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7544                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7545                                    "interface for the group");
7546                         return -1;
7547                 }
7548
7549                 if_addr = wpa_s->pending_interface_addr;
7550         } else
7551                 if_addr = wpa_s->own_addr;
7552
7553         wpa_s->p2p_nfc_tag_enabled = enabled;
7554
7555         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7556                 struct hostapd_data *hapd;
7557                 if (iface->ap_iface == NULL)
7558                         continue;
7559                 hapd = iface->ap_iface->bss[0];
7560                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7561                 hapd->conf->wps_nfc_dh_pubkey =
7562                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7563                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7564                 hapd->conf->wps_nfc_dh_privkey =
7565                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7566                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7567                 hapd->conf->wps_nfc_dev_pw =
7568                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7569                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7570
7571                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7572                         wpa_dbg(iface, MSG_DEBUG,
7573                                 "P2P: Failed to enable NFC Tag for GO");
7574                 }
7575         }
7576         p2p_set_authorized_oob_dev_pw_id(
7577                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7578                 if_addr);
7579
7580         return 0;
7581 }
7582
7583 #endif /* CONFIG_WPS_NFC */