wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_common.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p/p2p.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/p2p_hostapd.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "ap.h"
  26 #include "config_ssid.h"
  27 #include "config.h"
  28 #include "notify.h"
  29 #include "scan.h"
  30 #include "bss.h"
  31 #include "offchannel.h"
  32 #include "wps_supplicant.h"
  33 #include "p2p_supplicant.h"
  34
  35
  36 /*
  37  * How many times to try to scan to find the GO before giving up on join
  38  * request.
  39  */
  40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  41
  42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  43
  44 #ifndef P2P_MAX_CLIENT_IDLE
  45 /*
  46  * How many seconds to try to reconnect to the GO when connection in P2P client
  47  * role has been lost.
  48  */
  49 #ifdef ANDROID_P2P
  50 #define P2P_MAX_CLIENT_IDLE 20
  51 #else
  52 #define P2P_MAX_CLIENT_IDLE 10
  53 #endif /* ANDROID_P2P */
  54 #endif /* P2P_MAX_CLIENT_IDLE */
  55
  56 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  57 /*
  58  * How many seconds to wait for initial 4-way handshake to get completed after
  59  * WPS provisioning step.
  60  */
  61 #define P2P_MAX_INITIAL_CONN_WAIT 10
  62 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  63
  64 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  65 #define P2P_CONCURRENT_SEARCH_DELAY 500
  66 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  67
  68 enum p2p_group_removal_reason {
  69         P2P_GROUP_REMOVAL_UNKNOWN,
  70         P2P_GROUP_REMOVAL_SILENT,
  71         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  72         P2P_GROUP_REMOVAL_REQUESTED,
  73         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  74         P2P_GROUP_REMOVAL_UNAVAILABLE,
  75         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  76 #ifdef ANDROID_P2P
  77         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  78 #endif
  79 };
  80
  81
  82 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  83 static struct wpa_supplicant *
  84 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  85                          int go);
  86 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  87 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  88 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  89 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  90                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  91                          int auto_join);
  92 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  93 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  94 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  95 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  96 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
  97                                              void *timeout_ctx);
  98 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  99                                         int group_added);
 100 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 101
 102
 103 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 104                                              int freq)
 105 {
 106         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 107                 return;
 108         if (freq > 0 &&
 109             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) &&
 110             wpa_s->parent->conf->p2p_ignore_shared_freq)
 111                 freq = 0;
 112         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 113 }
 114
 115
 116 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 117                                       struct wpa_scan_results *scan_res)
 118 {
 119         size_t i;
 120
 121         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 122                 return;
 123
 124         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 125                    (int) scan_res->num);
 126
 127         for (i = 0; i < scan_res->num; i++) {
 128                 struct wpa_scan_res *bss = scan_res->res[i];
 129                 struct os_time time_tmp_age, entry_ts;
 130                 time_tmp_age.sec = bss->age / 1000;
 131                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 132                 os_time_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 133                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 134                                          bss->freq, &entry_ts, bss->level,
 135                                          (const u8 *) (bss + 1),
 136                                          bss->ie_len) > 0)
 137                         break;
 138         }
 139
 140         p2p_scan_res_handled(wpa_s->global->p2p);
 141 }
 142
 143
 144 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 145                          unsigned int num_req_dev_types,
 146                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 147 {
 148         struct wpa_supplicant *wpa_s = ctx;
 149         struct wpa_supplicant *ifs;
 150         struct wpa_driver_scan_params params;
 151         int ret;
 152         struct wpabuf *wps_ie, *ies;
 153         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 154         size_t ielen;
 155
 156         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 157                 return -1;
 158
 159         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 160                 if (ifs->sta_scan_pending &&
 161                     (wpas_scan_scheduled(ifs) || ifs->scanning) &&
 162                     wpas_p2p_in_progress(wpa_s) == 2) {
 163                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 164                                    "pending station mode scan to be "
 165                                    "completed on interface %s", ifs->ifname);
 166                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 167                         wpa_supplicant_req_scan(ifs, 0, 0);
 168                         return 1;
 169                 }
 170         }
 171
 172         os_memset(&params, 0, sizeof(params));
 173
 174         /* P2P Wildcard SSID */
 175         params.num_ssids = 1;
 176         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 177         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 178
 179         wpa_s->wps->dev.p2p = 1;
 180         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 181                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 182                                         num_req_dev_types, req_dev_types);
 183         if (wps_ie == NULL)
 184                 return -1;
 185
 186         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 187         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 188         if (ies == NULL) {
 189                 wpabuf_free(wps_ie);
 190                 return -1;
 191         }
 192         wpabuf_put_buf(ies, wps_ie);
 193         wpabuf_free(wps_ie);
 194
 195         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 196
 197         params.p2p_probe = 1;
 198         params.extra_ies = wpabuf_head(ies);
 199         params.extra_ies_len = wpabuf_len(ies);
 200
 201         switch (type) {
 202         case P2P_SCAN_SOCIAL:
 203                 params.freqs = social_channels;
 204                 break;
 205         case P2P_SCAN_FULL:
 206                 break;
 207         case P2P_SCAN_SPECIFIC:
 208                 social_channels[0] = freq;
 209                 social_channels[1] = 0;
 210                 params.freqs = social_channels;
 211                 break;
 212         case P2P_SCAN_SOCIAL_PLUS_ONE:
 213                 social_channels[3] = freq;
 214                 params.freqs = social_channels;
 215                 break;
 216         }
 217
 218         ret = wpa_drv_scan(wpa_s, &params);
 219
 220         wpabuf_free(ies);
 221
 222         if (ret) {
 223                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 224                         if (ifs->scanning ||
 225                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 226                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 227                                 ret = 1;
 228                                 break;
 229                         }
 230                 }
 231         } else
 232                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 233
 234         return ret;
 235 }
 236
 237
 238 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 239 {
 240         switch (p2p_group_interface) {
 241         case P2P_GROUP_INTERFACE_PENDING:
 242                 return WPA_IF_P2P_GROUP;
 243         case P2P_GROUP_INTERFACE_GO:
 244                 return WPA_IF_P2P_GO;
 245         case P2P_GROUP_INTERFACE_CLIENT:
 246                 return WPA_IF_P2P_CLIENT;
 247         }
 248
 249         return WPA_IF_P2P_GROUP;
 250 }
 251
 252
 253 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 254                                                   const u8 *ssid,
 255                                                   size_t ssid_len, int *go)
 256 {
 257         struct wpa_ssid *s;
 258
 259         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 260                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 261                         if (s->disabled != 0 || !s->p2p_group ||
 262                             s->ssid_len != ssid_len ||
 263                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 264                                 continue;
 265                         if (s->mode == WPAS_MODE_P2P_GO &&
 266                             s != wpa_s->current_ssid)
 267                                 continue;
 268                         if (go)
 269                                 *go = s->mode == WPAS_MODE_P2P_GO;
 270                         return wpa_s;
 271                 }
 272         }
 273
 274         return NULL;
 275 }
 276
 277
 278 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 279                                  enum p2p_group_removal_reason removal_reason)
 280 {
 281         struct wpa_ssid *ssid;
 282         char *gtype;
 283         const char *reason;
 284
 285         ssid = wpa_s->current_ssid;
 286         if (ssid == NULL) {
 287                 /*
 288                  * The current SSID was not known, but there may still be a
 289                  * pending P2P group interface waiting for provisioning or a
 290                  * P2P group that is trying to reconnect.
 291                  */
 292                 ssid = wpa_s->conf->ssid;
 293                 while (ssid) {
 294                         if (ssid->p2p_group && ssid->disabled != 2)
 295                                 break;
 296                         ssid = ssid->next;
 297                 }
 298                 if (ssid == NULL &&
 299                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 300                 {
 301                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 302                                    "not found");
 303                         return -1;
 304                 }
 305         }
 306         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 307                 gtype = "GO";
 308         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 309                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 310                 wpa_s->reassociate = 0;
 311                 wpa_s->disconnected = 1;
 312                 wpa_supplicant_deauthenticate(wpa_s,
 313                                               WLAN_REASON_DEAUTH_LEAVING);
 314                 gtype = "client";
 315         } else
 316                 gtype = "GO";
 317         if (wpa_s->cross_connect_in_use) {
 318                 wpa_s->cross_connect_in_use = 0;
 319                 wpa_msg(wpa_s->parent, MSG_INFO,
 320                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 321                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 322         }
 323         switch (removal_reason) {
 324         case P2P_GROUP_REMOVAL_REQUESTED:
 325                 reason = " reason=REQUESTED";
 326                 break;
 327         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 328                 reason = " reason=FORMATION_FAILED";
 329                 break;
 330         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 331                 reason = " reason=IDLE";
 332                 break;
 333         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 334                 reason = " reason=UNAVAILABLE";
 335                 break;
 336         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 337                 reason = " reason=GO_ENDING_SESSION";
 338                 break;
 339 #ifdef ANDROID_P2P
 340         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 341                 reason = " reason=FREQ_CONFLICT";
 342                 break;
 343 #endif
 344         default:
 345                 reason = "";
 346                 break;
 347         }
 348         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 349                 wpa_msg(wpa_s->parent, MSG_INFO,
 350                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 351                         wpa_s->ifname, gtype, reason);
 352         }
 353
 354         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 355                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 356         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 357                                  wpa_s->parent, NULL) > 0) {
 358                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 359                            "timeout");
 360                 wpa_s->p2p_in_provisioning = 0;
 361         }
 362
 363         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 364                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 365
 366         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 367                 struct wpa_global *global;
 368                 char *ifname;
 369                 enum wpa_driver_if_type type;
 370                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 371                         wpa_s->ifname);
 372                 global = wpa_s->global;
 373                 ifname = os_strdup(wpa_s->ifname);
 374                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 375                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 376                 wpa_s = global->ifaces;
 377                 if (wpa_s && ifname)
 378                         wpa_drv_if_remove(wpa_s, type, ifname);
 379                 os_free(ifname);
 380                 return 1;
 381         }
 382
 383         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 384         if (ssid && (ssid->p2p_group ||
 385                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 386                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 387                 int id = ssid->id;
 388                 if (ssid == wpa_s->current_ssid) {
 389                         wpa_sm_set_config(wpa_s->wpa, NULL);
 390                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 391                         wpa_s->current_ssid = NULL;
 392                 }
 393                 /*
 394                  * Networks objects created during any P2P activities are not
 395                  * exposed out as they might/will confuse certain non-P2P aware
 396                  * applications since these network objects won't behave like
 397                  * regular ones.
 398                  *
 399                  * Likewise, we don't send out network removed signals for such
 400                  * network objects.
 401                  */
 402                 wpa_config_remove_network(wpa_s->conf, id);
 403                 wpa_supplicant_clear_status(wpa_s);
 404                 wpa_supplicant_cancel_sched_scan(wpa_s);
 405                 wpa_s->sta_scan_pending = 0;
 406         } else {
 407                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 408                            "found");
 409         }
 410         if (wpa_s->ap_iface)
 411                 wpa_supplicant_ap_deinit(wpa_s);
 412         else
 413                 wpa_drv_deinit_p2p_cli(wpa_s);
 414
 415         return 0;
 416 }
 417
 418
 419 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 420                                      u8 *go_dev_addr,
 421                                      const u8 *ssid, size_t ssid_len)
 422 {
 423         struct wpa_bss *bss;
 424         const u8 *bssid;
 425         struct wpabuf *p2p;
 426         u8 group_capab;
 427         const u8 *addr;
 428
 429         if (wpa_s->go_params)
 430                 bssid = wpa_s->go_params->peer_interface_addr;
 431         else
 432                 bssid = wpa_s->bssid;
 433
 434         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 435         if (bss == NULL) {
 436                 u8 iface_addr[ETH_ALEN];
 437                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 438                                            iface_addr) == 0)
 439                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 440         }
 441         if (bss == NULL) {
 442                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 443                            "group is persistent - BSS " MACSTR " not found",
 444                            MAC2STR(bssid));
 445                 return 0;
 446         }
 447
 448         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 449         if (p2p == NULL) {
 450                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 451                            "group is persistent - BSS " MACSTR
 452                            " did not include P2P IE", MAC2STR(bssid));
 453                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 454                             (u8 *) (bss + 1), bss->ie_len);
 455                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 456                             ((u8 *) bss + 1) + bss->ie_len,
 457                             bss->beacon_ie_len);
 458                 return 0;
 459         }
 460
 461         group_capab = p2p_get_group_capab(p2p);
 462         addr = p2p_get_go_dev_addr(p2p);
 463         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 464                    "group_capab=0x%x", group_capab);
 465         if (addr) {
 466                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 467                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 468                            MAC2STR(addr));
 469         } else
 470                 os_memset(go_dev_addr, 0, ETH_ALEN);
 471         wpabuf_free(p2p);
 472
 473         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 474                    "go_dev_addr=" MACSTR,
 475                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 476
 477         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 478 }
 479
 480
 481 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 482                                            struct wpa_ssid *ssid,
 483                                            const u8 *go_dev_addr)
 484 {
 485         struct wpa_ssid *s;
 486         int changed = 0;
 487
 488         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 489                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 490         for (s = wpa_s->conf->ssid; s; s = s->next) {
 491                 if (s->disabled == 2 &&
 492                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 493                     s->ssid_len == ssid->ssid_len &&
 494                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 495                         break;
 496         }
 497
 498         if (s) {
 499                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 500                            "entry");
 501                 if (ssid->passphrase && !s->passphrase)
 502                         changed = 1;
 503                 else if (ssid->passphrase && s->passphrase &&
 504                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 505                         changed = 1;
 506         } else {
 507                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 508                            "entry");
 509                 changed = 1;
 510                 s = wpa_config_add_network(wpa_s->conf);
 511                 if (s == NULL)
 512                         return -1;
 513
 514                 /*
 515                  * Instead of network_added we emit persistent_group_added
 516                  * notification. Also to keep the defense checks in
 517                  * persistent_group obj registration method, we set the
 518                  * relevant flags in s to designate it as a persistent group.
 519                  */
 520                 s->p2p_group = 1;
 521                 s->p2p_persistent_group = 1;
 522                 wpas_notify_persistent_group_added(wpa_s, s);
 523                 wpa_config_set_network_defaults(s);
 524         }
 525
 526         s->p2p_group = 1;
 527         s->p2p_persistent_group = 1;
 528         s->disabled = 2;
 529         s->bssid_set = 1;
 530         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 531         s->mode = ssid->mode;
 532         s->auth_alg = WPA_AUTH_ALG_OPEN;
 533         s->key_mgmt = WPA_KEY_MGMT_PSK;
 534         s->proto = WPA_PROTO_RSN;
 535         s->pairwise_cipher = WPA_CIPHER_CCMP;
 536         s->export_keys = 1;
 537         if (ssid->passphrase) {
 538                 os_free(s->passphrase);
 539                 s->passphrase = os_strdup(ssid->passphrase);
 540         }
 541         if (ssid->psk_set) {
 542                 s->psk_set = 1;
 543                 os_memcpy(s->psk, ssid->psk, 32);
 544         }
 545         if (s->passphrase && !s->psk_set)
 546                 wpa_config_update_psk(s);
 547         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 548                 os_free(s->ssid);
 549                 s->ssid = os_malloc(ssid->ssid_len);
 550         }
 551         if (s->ssid) {
 552                 s->ssid_len = ssid->ssid_len;
 553                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 554         }
 555
 556 #ifndef CONFIG_NO_CONFIG_WRITE
 557         if (changed && wpa_s->conf->update_config &&
 558             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 559                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 560         }
 561 #endif /* CONFIG_NO_CONFIG_WRITE */
 562
 563         return s->id;
 564 }
 565
 566
 567 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 568                                                  const u8 *addr)
 569 {
 570         struct wpa_ssid *ssid, *s;
 571         u8 *n;
 572         size_t i;
 573         int found = 0;
 574
 575         ssid = wpa_s->current_ssid;
 576         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 577             !ssid->p2p_persistent_group)
 578                 return;
 579
 580         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 581                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 582                         continue;
 583
 584                 if (s->ssid_len == ssid->ssid_len &&
 585                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 586                         break;
 587         }
 588
 589         if (s == NULL)
 590                 return;
 591
 592         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 593                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 594                               ETH_ALEN) != 0)
 595                         continue;
 596
 597                 if (i == s->num_p2p_clients - 1)
 598                         return; /* already the most recent entry */
 599
 600                 /* move the entry to mark it most recent */
 601                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 602                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 603                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 604                 os_memcpy(s->p2p_client_list +
 605                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 606                 found = 1;
 607                 break;
 608         }
 609
 610         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 611                 n = os_realloc_array(s->p2p_client_list,
 612                                      s->num_p2p_clients + 1, ETH_ALEN);
 613                 if (n == NULL)
 614                         return;
 615                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 616                 s->p2p_client_list = n;
 617                 s->num_p2p_clients++;
 618         } else if (!found) {
 619                 /* Not enough room for an additional entry - drop the oldest
 620                  * entry */
 621                 os_memmove(s->p2p_client_list,
 622                            s->p2p_client_list + ETH_ALEN,
 623                            (s->num_p2p_clients - 1) * ETH_ALEN);
 624                 os_memcpy(s->p2p_client_list +
 625                           (s->num_p2p_clients - 1) * ETH_ALEN,
 626                           addr, ETH_ALEN);
 627         }
 628
 629 #ifndef CONFIG_NO_CONFIG_WRITE
 630         if (wpa_s->parent->conf->update_config &&
 631             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 632                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 633 #endif /* CONFIG_NO_CONFIG_WRITE */
 634 }
 635
 636
 637 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 638                                            int success)
 639 {
 640         struct wpa_ssid *ssid;
 641         const char *ssid_txt;
 642         int client;
 643         int persistent;
 644         u8 go_dev_addr[ETH_ALEN];
 645         int network_id = -1;
 646
 647         /*
 648          * This callback is likely called for the main interface. Update wpa_s
 649          * to use the group interface if a new interface was created for the
 650          * group.
 651          */
 652         if (wpa_s->global->p2p_group_formation)
 653                 wpa_s = wpa_s->global->p2p_group_formation;
 654         wpa_s->global->p2p_group_formation = NULL;
 655         wpa_s->p2p_in_provisioning = 0;
 656
 657         if (!success) {
 658                 wpa_msg(wpa_s->parent, MSG_INFO,
 659                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 660                 wpas_p2p_group_delete(wpa_s,
 661                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 662                 return;
 663         }
 664
 665         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 666
 667         ssid = wpa_s->current_ssid;
 668         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 669                 ssid->mode = WPAS_MODE_P2P_GO;
 670                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 671                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 672         }
 673
 674         persistent = 0;
 675         if (ssid) {
 676                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 677                 client = ssid->mode == WPAS_MODE_INFRA;
 678                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 679                         persistent = ssid->p2p_persistent_group;
 680                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 681                                   ETH_ALEN);
 682                 } else
 683                         persistent = wpas_p2p_persistent_group(wpa_s,
 684                                                                go_dev_addr,
 685                                                                ssid->ssid,
 686                                                                ssid->ssid_len);
 687         } else {
 688                 ssid_txt = "";
 689                 client = wpa_s->p2p_group_interface ==
 690                         P2P_GROUP_INTERFACE_CLIENT;
 691                 os_memset(go_dev_addr, 0, ETH_ALEN);
 692         }
 693
 694         wpa_s->show_group_started = 0;
 695         if (client) {
 696                 /*
 697                  * Indicate event only after successfully completed 4-way
 698                  * handshake, i.e., when the interface is ready for data
 699                  * packets.
 700                  */
 701                 wpa_s->show_group_started = 1;
 702 #ifdef ANDROID_P2P
 703                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 704                  * So we need to restore wpa_s->global->p2p_group_formation */
 705                 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s);
 706                 wpa_s->global->p2p_group_formation = wpa_s;
 707 #endif
 708
 709         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 710                 char psk[65];
 711                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 712                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 713                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 714                         "%s",
 715                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 716                         MAC2STR(go_dev_addr),
 717                         persistent ? " [PERSISTENT]" : "");
 718                 wpas_p2p_cross_connect_setup(wpa_s);
 719                 wpas_p2p_set_group_idle_timeout(wpa_s);
 720         } else {
 721                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 722                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 723                         "go_dev_addr=" MACSTR "%s",
 724                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 725                         ssid && ssid->passphrase ? ssid->passphrase : "",
 726                         MAC2STR(go_dev_addr),
 727                         persistent ? " [PERSISTENT]" : "");
 728                 wpas_p2p_cross_connect_setup(wpa_s);
 729                 wpas_p2p_set_group_idle_timeout(wpa_s);
 730         }
 731
 732         if (persistent)
 733                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 734                                                              ssid, go_dev_addr);
 735         if (network_id < 0 && ssid)
 736                 network_id = ssid->id;
 737         if (!client)
 738                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 739 }
 740
 741
 742 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 743                                            unsigned int freq,
 744                                            const u8 *dst, const u8 *src,
 745                                            const u8 *bssid,
 746                                            const u8 *data, size_t data_len,
 747                                            enum offchannel_send_action_result
 748                                            result)
 749 {
 750         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 751
 752         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 753                 return;
 754         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 755                 return;
 756
 757         switch (result) {
 758         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 759                 res = P2P_SEND_ACTION_SUCCESS;
 760                 break;
 761         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 762                 res = P2P_SEND_ACTION_NO_ACK;
 763                 break;
 764         case OFFCHANNEL_SEND_ACTION_FAILED:
 765                 res = P2P_SEND_ACTION_FAILED;
 766                 break;
 767         }
 768
 769         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 770
 771         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 772             wpa_s->pending_pd_before_join &&
 773             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 774              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 775             wpa_s->p2p_fallback_to_go_neg) {
 776                 wpa_s->pending_pd_before_join = 0;
 777                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 778                         "during p2p_connect-auto");
 779                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 780                 return;
 781         }
 782 }
 783
 784
 785 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 786                             const u8 *src, const u8 *bssid, const u8 *buf,
 787                             size_t len, unsigned int wait_time)
 788 {
 789         struct wpa_supplicant *wpa_s = ctx;
 790         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 791                                       wait_time,
 792                                       wpas_p2p_send_action_tx_status, 1);
 793 }
 794
 795
 796 static void wpas_send_action_done(void *ctx)
 797 {
 798         struct wpa_supplicant *wpa_s = ctx;
 799         offchannel_send_action_done(wpa_s);
 800 }
 801
 802
 803 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 804                                     struct p2p_go_neg_results *params)
 805 {
 806         if (wpa_s->go_params == NULL) {
 807                 wpa_s->go_params = os_malloc(sizeof(*params));
 808                 if (wpa_s->go_params == NULL)
 809                         return -1;
 810         }
 811         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 812         return 0;
 813 }
 814
 815
 816 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 817                                     struct p2p_go_neg_results *res)
 818 {
 819         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 820                    MAC2STR(res->peer_interface_addr));
 821         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 822                           res->ssid, res->ssid_len);
 823         wpa_supplicant_ap_deinit(wpa_s);
 824         wpas_copy_go_neg_results(wpa_s, res);
 825         if (res->wps_method == WPS_PBC)
 826                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 827         else {
 828                 u16 dev_pw_id = DEV_PW_DEFAULT;
 829                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 830                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 831                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 832                                    wpa_s->p2p_pin, 1, dev_pw_id);
 833         }
 834 }
 835
 836
 837 static void p2p_go_configured(void *ctx, void *data)
 838 {
 839         struct wpa_supplicant *wpa_s = ctx;
 840         struct p2p_go_neg_results *params = data;
 841         struct wpa_ssid *ssid;
 842         int network_id = -1;
 843
 844         ssid = wpa_s->current_ssid;
 845         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 846                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 847                 if (wpa_s->global->p2p_group_formation == wpa_s)
 848                         wpa_s->global->p2p_group_formation = NULL;
 849                 if (os_strlen(params->passphrase) > 0) {
 850                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 851                                 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 852                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 853                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 854                                 ssid->frequency, params->passphrase,
 855                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 856                                 params->persistent_group ? " [PERSISTENT]" :
 857                                 "");
 858                 } else {
 859                         char psk[65];
 860                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
 861                                          sizeof(params->psk));
 862                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 863                                 "%s GO ssid=\"%s\" freq=%d psk=%s "
 864                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 865                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 866                                 ssid->frequency, psk,
 867                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 868                                 params->persistent_group ? " [PERSISTENT]" :
 869                                 "");
 870                 }
 871
 872                 if (params->persistent_group)
 873                         network_id = wpas_p2p_store_persistent_group(
 874                                 wpa_s->parent, ssid,
 875                                 wpa_s->global->p2p_dev_addr);
 876                 if (network_id < 0)
 877                         network_id = ssid->id;
 878                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 879                 wpas_p2p_cross_connect_setup(wpa_s);
 880                 wpas_p2p_set_group_idle_timeout(wpa_s);
 881                 return;
 882         }
 883
 884         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 885         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 886                                               params->peer_interface_addr)) {
 887                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 888                            "filtering");
 889                 return;
 890         }
 891         if (params->wps_method == WPS_PBC)
 892                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 893                                           params->peer_device_addr);
 894         else if (wpa_s->p2p_pin[0])
 895                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 896                                           wpa_s->p2p_pin, NULL, 0, 0);
 897         os_free(wpa_s->go_params);
 898         wpa_s->go_params = NULL;
 899 }
 900
 901
 902 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 903                               struct p2p_go_neg_results *params,
 904                               int group_formation)
 905 {
 906         struct wpa_ssid *ssid;
 907
 908         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 909         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 910                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 911                         "results");
 912                 return;
 913         }
 914
 915         ssid = wpa_config_add_network(wpa_s->conf);
 916         if (ssid == NULL) {
 917                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 918                 return;
 919         }
 920
 921         wpa_s->show_group_started = 0;
 922
 923         wpa_config_set_network_defaults(ssid);
 924         ssid->temporary = 1;
 925         ssid->p2p_group = 1;
 926         ssid->p2p_persistent_group = params->persistent_group;
 927         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 928                 WPAS_MODE_P2P_GO;
 929         ssid->frequency = params->freq;
 930         ssid->ht40 = params->ht40;
 931         ssid->ssid = os_zalloc(params->ssid_len + 1);
 932         if (ssid->ssid) {
 933                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 934                 ssid->ssid_len = params->ssid_len;
 935         }
 936         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 937         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 938         ssid->proto = WPA_PROTO_RSN;
 939         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 940         if (os_strlen(params->passphrase) > 0) {
 941                 ssid->passphrase = os_strdup(params->passphrase);
 942                 if (ssid->passphrase == NULL) {
 943                         wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy "
 944                                 "passphrase for GO");
 945                         wpa_config_remove_network(wpa_s->conf, ssid->id);
 946                         return;
 947                 }
 948         } else
 949                 ssid->passphrase = NULL;
 950         ssid->psk_set = params->psk_set;
 951         if (ssid->psk_set)
 952                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
 953         else if (ssid->passphrase)
 954                 wpa_config_update_psk(ssid);
 955         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 956
 957         wpa_s->ap_configured_cb = p2p_go_configured;
 958         wpa_s->ap_configured_cb_ctx = wpa_s;
 959         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 960         wpa_s->connect_without_scan = ssid;
 961         wpa_s->reassociate = 1;
 962         wpa_s->disconnected = 0;
 963         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 964                 "start GO)");
 965         wpa_supplicant_req_scan(wpa_s, 0, 0);
 966 }
 967
 968
 969 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 970                                   const struct wpa_supplicant *src)
 971 {
 972         struct wpa_config *d;
 973         const struct wpa_config *s;
 974
 975         d = dst->conf;
 976         s = src->conf;
 977
 978 #define C(n) if (s->n) d->n = os_strdup(s->n)
 979         C(device_name);
 980         C(manufacturer);
 981         C(model_name);
 982         C(model_number);
 983         C(serial_number);
 984         C(config_methods);
 985 #undef C
 986
 987         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 988         os_memcpy(d->sec_device_type, s->sec_device_type,
 989                   sizeof(d->sec_device_type));
 990         d->num_sec_device_types = s->num_sec_device_types;
 991
 992         d->p2p_group_idle = s->p2p_group_idle;
 993         d->p2p_intra_bss = s->p2p_intra_bss;
 994         d->persistent_reconnect = s->persistent_reconnect;
 995         d->max_num_sta = s->max_num_sta;
 996         d->pbc_in_m1 = s->pbc_in_m1;
 997 }
 998
 999
1000 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1001                                         enum wpa_driver_if_type type)
1002 {
1003         char ifname[120], force_ifname[120];
1004
1005         if (wpa_s->pending_interface_name[0]) {
1006                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1007                            "- skip creation of a new one");
1008                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1009                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1010                                    "unknown?! ifname='%s'",
1011                                    wpa_s->pending_interface_name);
1012                         return -1;
1013                 }
1014                 return 0;
1015         }
1016
1017         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
1018                     wpa_s->p2p_group_idx);
1019         if (os_strlen(ifname) >= IFNAMSIZ &&
1020             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1021                 /* Try to avoid going over the IFNAMSIZ length limit */
1022                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
1023                             wpa_s->p2p_group_idx);
1024         }
1025         force_ifname[0] = '\0';
1026
1027         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1028                    ifname);
1029         wpa_s->p2p_group_idx++;
1030
1031         wpa_s->pending_interface_type = type;
1032         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1033                            wpa_s->pending_interface_addr, NULL) < 0) {
1034                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1035                            "interface");
1036                 return -1;
1037         }
1038
1039         if (force_ifname[0]) {
1040                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1041                            force_ifname);
1042                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1043                            sizeof(wpa_s->pending_interface_name));
1044         } else
1045                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1046                            sizeof(wpa_s->pending_interface_name));
1047         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1048                    MACSTR, wpa_s->pending_interface_name,
1049                    MAC2STR(wpa_s->pending_interface_addr));
1050
1051         return 0;
1052 }
1053
1054
1055 static void wpas_p2p_remove_pending_group_interface(
1056         struct wpa_supplicant *wpa_s)
1057 {
1058         if (!wpa_s->pending_interface_name[0] ||
1059             is_zero_ether_addr(wpa_s->pending_interface_addr))
1060                 return; /* No pending virtual interface */
1061
1062         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1063                    wpa_s->pending_interface_name);
1064         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1065                           wpa_s->pending_interface_name);
1066         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1067         wpa_s->pending_interface_name[0] = '\0';
1068 }
1069
1070
1071 static struct wpa_supplicant *
1072 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1073 {
1074         struct wpa_interface iface;
1075         struct wpa_supplicant *group_wpa_s;
1076
1077         if (!wpa_s->pending_interface_name[0]) {
1078                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1079                 if (!wpas_p2p_create_iface(wpa_s))
1080                         return NULL;
1081                 /*
1082                  * Something has forced us to remove the pending interface; try
1083                  * to create a new one and hope for the best that we will get
1084                  * the same local address.
1085                  */
1086                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1087                                                  WPA_IF_P2P_CLIENT) < 0)
1088                         return NULL;
1089         }
1090
1091         os_memset(&iface, 0, sizeof(iface));
1092         iface.ifname = wpa_s->pending_interface_name;
1093         iface.driver = wpa_s->driver->name;
1094         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1095         iface.driver_param = wpa_s->conf->driver_param;
1096         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1097         if (group_wpa_s == NULL) {
1098                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1099                            "wpa_supplicant interface");
1100                 return NULL;
1101         }
1102         wpa_s->pending_interface_name[0] = '\0';
1103         group_wpa_s->parent = wpa_s;
1104         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1105                 P2P_GROUP_INTERFACE_CLIENT;
1106         wpa_s->global->p2p_group_formation = group_wpa_s;
1107
1108         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1109
1110         return group_wpa_s;
1111 }
1112
1113
1114 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1115                                              void *timeout_ctx)
1116 {
1117         struct wpa_supplicant *wpa_s = eloop_ctx;
1118         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1119         if (wpa_s->global->p2p)
1120                 p2p_group_formation_failed(wpa_s->global->p2p);
1121         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1122                 wpa_drv_p2p_group_formation_failed(wpa_s);
1123         wpas_group_formation_completed(wpa_s, 0);
1124 }
1125
1126
1127 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1128 {
1129         struct wpa_supplicant *wpa_s = ctx;
1130
1131         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1132                 wpa_drv_cancel_remain_on_channel(wpa_s);
1133                 wpa_s->off_channel_freq = 0;
1134                 wpa_s->roc_waiting_drv_freq = 0;
1135         }
1136
1137         if (res->status) {
1138                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1139                         res->status);
1140                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1141                 wpas_p2p_remove_pending_group_interface(wpa_s);
1142                 return;
1143         }
1144
1145         if (wpa_s->p2p_go_ht40)
1146                 res->ht40 = 1;
1147
1148         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1149         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1150
1151         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1152                 struct wpa_ssid *ssid;
1153                 ssid = wpa_config_get_network(wpa_s->conf,
1154                                               wpa_s->p2p_persistent_id);
1155                 if (ssid && ssid->disabled == 2 &&
1156                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1157                         size_t len = os_strlen(ssid->passphrase);
1158                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1159                                    "on requested persistent group");
1160                         os_memcpy(res->passphrase, ssid->passphrase, len);
1161                         res->passphrase[len] = '\0';
1162                 }
1163         }
1164
1165         if (wpa_s->create_p2p_iface) {
1166                 struct wpa_supplicant *group_wpa_s =
1167                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1168                 if (group_wpa_s == NULL) {
1169                         wpas_p2p_remove_pending_group_interface(wpa_s);
1170                         return;
1171                 }
1172                 if (group_wpa_s != wpa_s) {
1173                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1174                                   sizeof(group_wpa_s->p2p_pin));
1175                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1176                 }
1177                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1178                 wpa_s->pending_interface_name[0] = '\0';
1179                 group_wpa_s->p2p_in_provisioning = 1;
1180
1181                 if (res->role_go)
1182                         wpas_start_wps_go(group_wpa_s, res, 1);
1183                 else
1184                         wpas_start_wps_enrollee(group_wpa_s, res);
1185         } else {
1186                 wpa_s->p2p_in_provisioning = 1;
1187                 wpa_s->global->p2p_group_formation = wpa_s;
1188
1189                 if (res->role_go)
1190                         wpas_start_wps_go(wpa_s, res, 1);
1191                 else
1192                         wpas_start_wps_enrollee(ctx, res);
1193         }
1194
1195         wpa_s->p2p_long_listen = 0;
1196         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1197
1198         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1199         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1200                                (res->peer_config_timeout % 100) * 10000,
1201                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1202 }
1203
1204
1205 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1206 {
1207         struct wpa_supplicant *wpa_s = ctx;
1208         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1209                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1210
1211         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1212 }
1213
1214
1215 void wpas_dev_found(void *ctx, const u8 *addr,
1216                     const struct p2p_peer_info *info,
1217                     int new_device)
1218 {
1219 #ifndef CONFIG_NO_STDOUT_DEBUG
1220         struct wpa_supplicant *wpa_s = ctx;
1221         char devtype[WPS_DEV_TYPE_BUFSIZE];
1222 #define WFD_DEV_INFO_SIZE 9
1223         char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
1224         os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
1225 #ifdef CONFIG_WIFI_DISPLAY
1226         if (info->wfd_subelems) {
1227                 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
1228                                         wpabuf_head(info->wfd_subelems),
1229                                         WFD_DEV_INFO_SIZE);
1230         }
1231 #endif /* CONFIG_WIFI_DISPLAY */
1232         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1233                 " p2p_dev_addr=" MACSTR
1234                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1235                 "dev_capab=0x%x group_capab=0x%x%s%s",
1236                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1237                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1238                                      sizeof(devtype)),
1239                 info->device_name, info->config_methods,
1240                 info->dev_capab, info->group_capab,
1241                 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
1242 #endif /* CONFIG_NO_STDOUT_DEBUG */
1243
1244         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1245 }
1246
1247
1248 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1249 {
1250         struct wpa_supplicant *wpa_s = ctx;
1251
1252         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1253                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1254
1255         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1256 }
1257
1258
1259 static int wpas_start_listen(void *ctx, unsigned int freq,
1260                              unsigned int duration,
1261                              const struct wpabuf *probe_resp_ie)
1262 {
1263         struct wpa_supplicant *wpa_s = ctx;
1264
1265         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1266
1267         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1268                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1269                            "report received Probe Request frames");
1270                 return -1;
1271         }
1272
1273         wpa_s->pending_listen_freq = freq;
1274         wpa_s->pending_listen_duration = duration;
1275
1276         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1277                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1278                            "to remain on channel (%u MHz) for Listen "
1279                            "state", freq);
1280                 wpa_s->pending_listen_freq = 0;
1281                 return -1;
1282         }
1283         wpa_s->off_channel_freq = 0;
1284         wpa_s->roc_waiting_drv_freq = freq;
1285
1286         return 0;
1287 }
1288
1289
1290 static void wpas_stop_listen(void *ctx)
1291 {
1292         struct wpa_supplicant *wpa_s = ctx;
1293         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1294                 wpa_drv_cancel_remain_on_channel(wpa_s);
1295                 wpa_s->off_channel_freq = 0;
1296                 wpa_s->roc_waiting_drv_freq = 0;
1297         }
1298         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1299         wpa_drv_probe_req_report(wpa_s, 0);
1300 }
1301
1302
1303 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1304 {
1305         struct wpa_supplicant *wpa_s = ctx;
1306         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1307 }
1308
1309
1310 /*
1311  * DNS Header section is used only to calculate compression pointers, so the
1312  * contents of this data does not matter, but the length needs to be reserved
1313  * in the virtual packet.
1314  */
1315 #define DNS_HEADER_LEN 12
1316
1317 /*
1318  * 27-octet in-memory packet from P2P specification containing two implied
1319  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1320  */
1321 #define P2P_SD_IN_MEMORY_LEN 27
1322
1323 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1324                                        u8 **spos, const u8 *end)
1325 {
1326         while (*spos < end) {
1327                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1328                 int len;
1329
1330                 if (val == 1 || val == 2) {
1331                         /* These are reserved values in RFC 1035 */
1332                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1333                                    "sequence starting with 0x%x", val);
1334                         return -1;
1335                 }
1336
1337                 if (val == 3) {
1338                         u16 offset;
1339                         u8 *spos_tmp;
1340
1341                         /* Offset */
1342                         if (*spos + 2 > end) {
1343                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1344                                            "DNS offset field");
1345                                 return -1;
1346                         }
1347
1348                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1349                         if (offset >= *spos - start) {
1350                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1351                                            "pointer offset %u", offset);
1352                                 return -1;
1353                         }
1354
1355                         (*spos) += 2;
1356                         spos_tmp = start + offset;
1357                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1358                                                            &spos_tmp,
1359                                                            *spos - 2);
1360                 }
1361
1362                 /* Label */
1363                 len = (*spos)[0] & 0x3f;
1364                 if (len == 0)
1365                         return 0;
1366
1367                 (*spos)++;
1368                 if (*spos + len > end) {
1369                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1370                                    "sequence - no room for label with length "
1371                                    "%u", len);
1372                         return -1;
1373                 }
1374
1375                 if (*upos + len + 2 > uend)
1376                         return -2;
1377
1378                 os_memcpy(*upos, *spos, len);
1379                 *spos += len;
1380                 *upos += len;
1381                 (*upos)[0] = '.';
1382                 (*upos)++;
1383                 (*upos)[0] = '\0';
1384         }
1385
1386         return 0;
1387 }
1388
1389
1390 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1391  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1392  * not large enough */
1393 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1394                                  size_t msg_len, size_t offset)
1395 {
1396         /* 27-octet in-memory packet from P2P specification */
1397         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1398                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1399         u8 *tmp, *end, *spos;
1400         char *upos, *uend;
1401         int ret = 0;
1402
1403         if (buf_len < 2)
1404                 return -1;
1405         if (offset > msg_len)
1406                 return -1;
1407
1408         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1409         if (tmp == NULL)
1410                 return -1;
1411         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1412         end = spos + msg_len;
1413         spos += offset;
1414
1415         os_memset(tmp, 0, DNS_HEADER_LEN);
1416         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1417         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1418
1419         upos = buf;
1420         uend = buf + buf_len;
1421
1422         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1423         if (ret) {
1424                 os_free(tmp);
1425                 return ret;
1426         }
1427
1428         if (upos == buf) {
1429                 upos[0] = '.';
1430                 upos[1] = '\0';
1431         } else if (upos[-1] == '.')
1432                 upos[-1] = '\0';
1433
1434         os_free(tmp);
1435         return 0;
1436 }
1437
1438
1439 static struct p2p_srv_bonjour *
1440 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1441                              const struct wpabuf *query)
1442 {
1443         struct p2p_srv_bonjour *bsrv;
1444         size_t len;
1445
1446         len = wpabuf_len(query);
1447         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1448                          struct p2p_srv_bonjour, list) {
1449                 if (len == wpabuf_len(bsrv->query) &&
1450                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1451                               len) == 0)
1452                         return bsrv;
1453         }
1454         return NULL;
1455 }
1456
1457
1458 static struct p2p_srv_upnp *
1459 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1460                           const char *service)
1461 {
1462         struct p2p_srv_upnp *usrv;
1463
1464         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1465                          struct p2p_srv_upnp, list) {
1466                 if (version == usrv->version &&
1467                     os_strcmp(service, usrv->service) == 0)
1468                         return usrv;
1469         }
1470         return NULL;
1471 }
1472
1473
1474 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1475                                         u8 srv_trans_id)
1476 {
1477         u8 *len_pos;
1478
1479         if (wpabuf_tailroom(resp) < 5)
1480                 return;
1481
1482         /* Length (to be filled) */
1483         len_pos = wpabuf_put(resp, 2);
1484         wpabuf_put_u8(resp, srv_proto);
1485         wpabuf_put_u8(resp, srv_trans_id);
1486         /* Status Code */
1487         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1488         /* Response Data: empty */
1489         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1490 }
1491
1492
1493 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1494                                 struct wpabuf *resp, u8 srv_trans_id)
1495 {
1496         struct p2p_srv_bonjour *bsrv;
1497         u8 *len_pos;
1498
1499         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1500
1501         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1502                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1503                 return;
1504         }
1505
1506         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1507                          struct p2p_srv_bonjour, list) {
1508                 if (wpabuf_tailroom(resp) <
1509                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1510                         return;
1511                 /* Length (to be filled) */
1512                 len_pos = wpabuf_put(resp, 2);
1513                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1514                 wpabuf_put_u8(resp, srv_trans_id);
1515                 /* Status Code */
1516                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1517                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1518                                   wpabuf_head(bsrv->resp),
1519                                   wpabuf_len(bsrv->resp));
1520                 /* Response Data */
1521                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1522                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1523                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1524                              2);
1525         }
1526 }
1527
1528
1529 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
1530                                size_t query_len)
1531 {
1532         char str_rx[256], str_srv[256];
1533
1534         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
1535                 return 0; /* Too short to include DNS Type and Version */
1536         if (os_memcmp(query + query_len - 3,
1537                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
1538                       3) != 0)
1539                 return 0; /* Mismatch in DNS Type or Version */
1540         if (query_len == wpabuf_len(bsrv->query) &&
1541             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
1542                 return 1; /* Binary match */
1543
1544         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
1545                                   0))
1546                 return 0; /* Failed to uncompress query */
1547         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
1548                                   wpabuf_head(bsrv->query),
1549                                   wpabuf_len(bsrv->query) - 3, 0))
1550                 return 0; /* Failed to uncompress service */
1551
1552         return os_strcmp(str_rx, str_srv) == 0;
1553 }
1554
1555
1556 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1557                                 struct wpabuf *resp, u8 srv_trans_id,
1558                                 const u8 *query, size_t query_len)
1559 {
1560         struct p2p_srv_bonjour *bsrv;
1561         u8 *len_pos;
1562         int matches = 0;
1563
1564         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1565                           query, query_len);
1566         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1567                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1568                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1569                                             srv_trans_id);
1570                 return;
1571         }
1572
1573         if (query_len == 0) {
1574                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1575                 return;
1576         }
1577
1578         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1579                          struct p2p_srv_bonjour, list) {
1580                 if (!match_bonjour_query(bsrv, query, query_len))
1581                         continue;
1582
1583                 if (wpabuf_tailroom(resp) <
1584                     5 + query_len + wpabuf_len(bsrv->resp))
1585                         return;
1586
1587                 matches++;
1588
1589                 /* Length (to be filled) */
1590                 len_pos = wpabuf_put(resp, 2);
1591                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1592                 wpabuf_put_u8(resp, srv_trans_id);
1593
1594                 /* Status Code */
1595                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1596                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1597                                   wpabuf_head(bsrv->resp),
1598                                   wpabuf_len(bsrv->resp));
1599
1600                 /* Response Data */
1601                 wpabuf_put_data(resp, query, query_len); /* Key */
1602                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1603
1604                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1605         }
1606
1607         if (matches == 0) {
1608                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1609                            "available");
1610                 if (wpabuf_tailroom(resp) < 5)
1611                         return;
1612
1613                 /* Length (to be filled) */
1614                 len_pos = wpabuf_put(resp, 2);
1615                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1616                 wpabuf_put_u8(resp, srv_trans_id);
1617
1618                 /* Status Code */
1619                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1620                 /* Response Data: empty */
1621                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1622                              2);
1623         }
1624 }
1625
1626
1627 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1628                              struct wpabuf *resp, u8 srv_trans_id)
1629 {
1630         struct p2p_srv_upnp *usrv;
1631         u8 *len_pos;
1632
1633         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1634
1635         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1636                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1637                 return;
1638         }
1639
1640         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1641                          struct p2p_srv_upnp, list) {
1642                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1643                         return;
1644
1645                 /* Length (to be filled) */
1646                 len_pos = wpabuf_put(resp, 2);
1647                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1648                 wpabuf_put_u8(resp, srv_trans_id);
1649
1650                 /* Status Code */
1651                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1652                 /* Response Data */
1653                 wpabuf_put_u8(resp, usrv->version);
1654                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1655                            usrv->service);
1656                 wpabuf_put_str(resp, usrv->service);
1657                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1658                              2);
1659         }
1660 }
1661
1662
1663 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1664                              struct wpabuf *resp, u8 srv_trans_id,
1665                              const u8 *query, size_t query_len)
1666 {
1667         struct p2p_srv_upnp *usrv;
1668         u8 *len_pos;
1669         u8 version;
1670         char *str;
1671         int count = 0;
1672
1673         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1674                           query, query_len);
1675
1676         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1677                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1678                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1679                                             srv_trans_id);
1680                 return;
1681         }
1682
1683         if (query_len == 0) {
1684                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1685                 return;
1686         }
1687
1688         if (wpabuf_tailroom(resp) < 5)
1689                 return;
1690
1691         /* Length (to be filled) */
1692         len_pos = wpabuf_put(resp, 2);
1693         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1694         wpabuf_put_u8(resp, srv_trans_id);
1695
1696         version = query[0];
1697         str = os_malloc(query_len);
1698         if (str == NULL)
1699                 return;
1700         os_memcpy(str, query + 1, query_len - 1);
1701         str[query_len - 1] = '\0';
1702
1703         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1704                          struct p2p_srv_upnp, list) {
1705                 if (version != usrv->version)
1706                         continue;
1707
1708                 if (os_strcmp(str, "ssdp:all") != 0 &&
1709                     os_strstr(usrv->service, str) == NULL)
1710                         continue;
1711
1712                 if (wpabuf_tailroom(resp) < 2)
1713                         break;
1714                 if (count == 0) {
1715                         /* Status Code */
1716                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1717                         /* Response Data */
1718                         wpabuf_put_u8(resp, version);
1719                 } else
1720                         wpabuf_put_u8(resp, ',');
1721
1722                 count++;
1723
1724                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1725                            usrv->service);
1726                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1727                         break;
1728                 wpabuf_put_str(resp, usrv->service);
1729         }
1730         os_free(str);
1731
1732         if (count == 0) {
1733                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1734                            "available");
1735                 /* Status Code */
1736                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1737                 /* Response Data: empty */
1738         }
1739
1740         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1741 }
1742
1743
1744 #ifdef CONFIG_WIFI_DISPLAY
1745 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1746                             struct wpabuf *resp, u8 srv_trans_id,
1747                             const u8 *query, size_t query_len)
1748 {
1749         const u8 *pos;
1750         u8 role;
1751         u8 *len_pos;
1752
1753         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1754
1755         if (!wpa_s->global->wifi_display) {
1756                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1757                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1758                                             srv_trans_id);
1759                 return;
1760         }
1761
1762         if (query_len < 1) {
1763                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1764                            "Role");
1765                 return;
1766         }
1767
1768         if (wpabuf_tailroom(resp) < 5)
1769                 return;
1770
1771         pos = query;
1772         role = *pos++;
1773         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1774
1775         /* TODO: role specific handling */
1776
1777         /* Length (to be filled) */
1778         len_pos = wpabuf_put(resp, 2);
1779         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1780         wpabuf_put_u8(resp, srv_trans_id);
1781         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1782
1783         while (pos < query + query_len) {
1784                 if (*pos < MAX_WFD_SUBELEMS &&
1785                     wpa_s->global->wfd_subelem[*pos] &&
1786                     wpabuf_tailroom(resp) >=
1787                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1788                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1789                                    "subelement %u", *pos);
1790                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1791                 }
1792                 pos++;
1793         }
1794
1795         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1796 }
1797 #endif /* CONFIG_WIFI_DISPLAY */
1798
1799
1800 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1801                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1802 {
1803         struct wpa_supplicant *wpa_s = ctx;
1804         const u8 *pos = tlvs;
1805         const u8 *end = tlvs + tlvs_len;
1806         const u8 *tlv_end;
1807         u16 slen;
1808         struct wpabuf *resp;
1809         u8 srv_proto, srv_trans_id;
1810         size_t buf_len;
1811         char *buf;
1812
1813         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1814                     tlvs, tlvs_len);
1815         buf_len = 2 * tlvs_len + 1;
1816         buf = os_malloc(buf_len);
1817         if (buf) {
1818                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1819                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1820                              MACSTR " %u %u %s",
1821                              freq, MAC2STR(sa), dialog_token, update_indic,
1822                              buf);
1823                 os_free(buf);
1824         }
1825
1826         if (wpa_s->p2p_sd_over_ctrl_iface) {
1827                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1828                                            update_indic, tlvs, tlvs_len);
1829                 return; /* to be processed by an external program */
1830         }
1831
1832         resp = wpabuf_alloc(10000);
1833         if (resp == NULL)
1834                 return;
1835
1836         while (pos + 1 < end) {
1837                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1838                 slen = WPA_GET_LE16(pos);
1839                 pos += 2;
1840                 if (pos + slen > end || slen < 2) {
1841                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1842                                    "length");
1843                         wpabuf_free(resp);
1844                         return;
1845                 }
1846                 tlv_end = pos + slen;
1847
1848                 srv_proto = *pos++;
1849                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1850                            srv_proto);
1851                 srv_trans_id = *pos++;
1852                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1853                            srv_trans_id);
1854
1855                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1856                             pos, tlv_end - pos);
1857
1858
1859                 if (wpa_s->force_long_sd) {
1860                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1861                                    "response");
1862                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1863                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1864                         goto done;
1865                 }
1866
1867                 switch (srv_proto) {
1868                 case P2P_SERV_ALL_SERVICES:
1869                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1870                                    "for all services");
1871                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1872                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1873                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1874                                            "discovery protocols available");
1875                                 wpas_sd_add_proto_not_avail(
1876                                         resp, P2P_SERV_ALL_SERVICES,
1877                                         srv_trans_id);
1878                                 break;
1879                         }
1880                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1881                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1882                         break;
1883                 case P2P_SERV_BONJOUR:
1884                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1885                                             pos, tlv_end - pos);
1886                         break;
1887                 case P2P_SERV_UPNP:
1888                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1889                                          pos, tlv_end - pos);
1890                         break;
1891 #ifdef CONFIG_WIFI_DISPLAY
1892                 case P2P_SERV_WIFI_DISPLAY:
1893                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1894                                         pos, tlv_end - pos);
1895                         break;
1896 #endif /* CONFIG_WIFI_DISPLAY */
1897                 default:
1898                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1899                                    "protocol %u", srv_proto);
1900                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1901                                                     srv_trans_id);
1902                         break;
1903                 }
1904
1905                 pos = tlv_end;
1906         }
1907
1908 done:
1909         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1910                                    update_indic, tlvs, tlvs_len);
1911
1912         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1913
1914         wpabuf_free(resp);
1915 }
1916
1917
1918 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1919                       const u8 *tlvs, size_t tlvs_len)
1920 {
1921         struct wpa_supplicant *wpa_s = ctx;
1922         const u8 *pos = tlvs;
1923         const u8 *end = tlvs + tlvs_len;
1924         const u8 *tlv_end;
1925         u16 slen;
1926         size_t buf_len;
1927         char *buf;
1928
1929         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1930                     tlvs, tlvs_len);
1931         if (tlvs_len > 1500) {
1932                 /* TODO: better way for handling this */
1933                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1934                              P2P_EVENT_SERV_DISC_RESP MACSTR
1935                              " %u <long response: %u bytes>",
1936                              MAC2STR(sa), update_indic,
1937                              (unsigned int) tlvs_len);
1938         } else {
1939                 buf_len = 2 * tlvs_len + 1;
1940                 buf = os_malloc(buf_len);
1941                 if (buf) {
1942                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1943                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1944                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1945                                      MAC2STR(sa), update_indic, buf);
1946                         os_free(buf);
1947                 }
1948         }
1949
1950         while (pos < end) {
1951                 u8 srv_proto, srv_trans_id, status;
1952
1953                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1954                 slen = WPA_GET_LE16(pos);
1955                 pos += 2;
1956                 if (pos + slen > end || slen < 3) {
1957                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1958                                    "length");
1959                         return;
1960                 }
1961                 tlv_end = pos + slen;
1962
1963                 srv_proto = *pos++;
1964                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1965                            srv_proto);
1966                 srv_trans_id = *pos++;
1967                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1968                            srv_trans_id);
1969                 status = *pos++;
1970                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1971                            status);
1972
1973                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1974                             pos, tlv_end - pos);
1975
1976                 pos = tlv_end;
1977         }
1978
1979         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1980 }
1981
1982
1983 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1984                         const struct wpabuf *tlvs)
1985 {
1986         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1987                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1988         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1989                 return 0;
1990         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1991 }
1992
1993
1994 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1995                              u8 version, const char *query)
1996 {
1997         struct wpabuf *tlvs;
1998         u64 ret;
1999
2000         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2001         if (tlvs == NULL)
2002                 return 0;
2003         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2004         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2005         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2006         wpabuf_put_u8(tlvs, version);
2007         wpabuf_put_str(tlvs, query);
2008         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2009         wpabuf_free(tlvs);
2010         return ret;
2011 }
2012
2013
2014 #ifdef CONFIG_WIFI_DISPLAY
2015
2016 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2017                                    const struct wpabuf *tlvs)
2018 {
2019         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2020                 return 0;
2021         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2022                 return 0;
2023         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2024 }
2025
2026
2027 #define MAX_WFD_SD_SUBELEMS 20
2028
2029 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2030                                 const char *subelems)
2031 {
2032         u8 *len;
2033         const char *pos;
2034         int val;
2035         int count = 0;
2036
2037         len = wpabuf_put(tlvs, 2);
2038         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2039         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2040
2041         wpabuf_put_u8(tlvs, role);
2042
2043         pos = subelems;
2044         while (*pos) {
2045                 val = atoi(pos);
2046                 if (val >= 0 && val < 256) {
2047                         wpabuf_put_u8(tlvs, val);
2048                         count++;
2049                         if (count == MAX_WFD_SD_SUBELEMS)
2050                                 break;
2051                 }
2052                 pos = os_strchr(pos + 1, ',');
2053                 if (pos == NULL)
2054                         break;
2055                 pos++;
2056         }
2057
2058         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2059 }
2060
2061
2062 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2063                                      const u8 *dst, const char *role)
2064 {
2065         struct wpabuf *tlvs;
2066         u64 ret;
2067         const char *subelems;
2068         u8 id = 1;
2069
2070         subelems = os_strchr(role, ' ');
2071         if (subelems == NULL)
2072                 return 0;
2073         subelems++;
2074
2075         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2076         if (tlvs == NULL)
2077                 return 0;
2078
2079         if (os_strstr(role, "[source]"))
2080                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2081         if (os_strstr(role, "[pri-sink]"))
2082                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2083         if (os_strstr(role, "[sec-sink]"))
2084                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2085         if (os_strstr(role, "[source+sink]"))
2086                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2087
2088         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2089         wpabuf_free(tlvs);
2090         return ret;
2091 }
2092
2093 #endif /* CONFIG_WIFI_DISPLAY */
2094
2095
2096 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2097 {
2098         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2099                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
2100         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2101                 return -1;
2102         return p2p_sd_cancel_request(wpa_s->global->p2p,
2103                                      (void *) (uintptr_t) req);
2104 }
2105
2106
2107 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2108                           const u8 *dst, u8 dialog_token,
2109                           const struct wpabuf *resp_tlvs)
2110 {
2111         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2112                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
2113                                         resp_tlvs);
2114                 return;
2115         }
2116         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2117                 return;
2118         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2119                         resp_tlvs);
2120 }
2121
2122 #ifdef ANDROID_P2P
2123 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
2124 #else
2125 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2126 #endif
2127 {
2128         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2129                 wpa_drv_p2p_service_update(wpa_s);
2130                 return;
2131         }
2132         if (wpa_s->global->p2p)
2133 #ifdef ANDROID_P2P
2134                 p2p_sd_service_update(wpa_s->global->p2p, action);
2135 #else
2136                 p2p_sd_service_update(wpa_s->global->p2p);
2137 #endif
2138 }
2139
2140
2141 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2142 {
2143         dl_list_del(&bsrv->list);
2144         wpabuf_free(bsrv->query);
2145         wpabuf_free(bsrv->resp);
2146         os_free(bsrv);
2147 }
2148
2149
2150 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2151 {
2152         dl_list_del(&usrv->list);
2153         os_free(usrv->service);
2154         os_free(usrv);
2155 }
2156
2157
2158 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2159 {
2160         struct p2p_srv_bonjour *bsrv, *bn;
2161         struct p2p_srv_upnp *usrv, *un;
2162
2163         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2164                               struct p2p_srv_bonjour, list)
2165                 wpas_p2p_srv_bonjour_free(bsrv);
2166
2167         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2168                               struct p2p_srv_upnp, list)
2169                 wpas_p2p_srv_upnp_free(usrv);
2170
2171 #ifdef ANDROID_P2P
2172         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
2173 #else
2174         wpas_p2p_sd_service_update(wpa_s);
2175 #endif
2176 }
2177
2178
2179 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2180                                  struct wpabuf *query, struct wpabuf *resp)
2181 {
2182         struct p2p_srv_bonjour *bsrv;
2183
2184         bsrv = os_zalloc(sizeof(*bsrv));
2185         if (bsrv == NULL)
2186                 return -1;
2187         bsrv->query = query;
2188         bsrv->resp = resp;
2189         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2190
2191 #ifdef ANDROID_P2P
2192         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2193 #else
2194         wpas_p2p_sd_service_update(wpa_s);
2195 #endif
2196         return 0;
2197 }
2198
2199
2200 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2201                                  const struct wpabuf *query)
2202 {
2203         struct p2p_srv_bonjour *bsrv;
2204
2205         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2206         if (bsrv == NULL)
2207                 return -1;
2208         wpas_p2p_srv_bonjour_free(bsrv);
2209 #ifdef ANDROID_P2P
2210         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2211 #else
2212         wpas_p2p_sd_service_update(wpa_s);
2213 #endif
2214         return 0;
2215 }
2216
2217
2218 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2219                               const char *service)
2220 {
2221         struct p2p_srv_upnp *usrv;
2222
2223         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2224                 return 0; /* Already listed */
2225         usrv = os_zalloc(sizeof(*usrv));
2226         if (usrv == NULL)
2227                 return -1;
2228         usrv->version = version;
2229         usrv->service = os_strdup(service);
2230         if (usrv->service == NULL) {
2231                 os_free(usrv);
2232                 return -1;
2233         }
2234         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2235
2236 #ifdef ANDROID_P2P
2237         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2238 #else
2239         wpas_p2p_sd_service_update(wpa_s);
2240 #endif
2241         return 0;
2242 }
2243
2244
2245 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2246                               const char *service)
2247 {
2248         struct p2p_srv_upnp *usrv;
2249
2250         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2251         if (usrv == NULL)
2252                 return -1;
2253         wpas_p2p_srv_upnp_free(usrv);
2254 #ifdef ANDROID_P2P
2255         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2256 #else
2257         wpas_p2p_sd_service_update(wpa_s);
2258 #endif
2259         return 0;
2260 }
2261
2262
2263 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2264                                          const u8 *peer, const char *params,
2265                                          unsigned int generated_pin)
2266 {
2267         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2268                 MAC2STR(peer), generated_pin, params);
2269 }
2270
2271
2272 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2273                                         const u8 *peer, const char *params)
2274 {
2275         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2276                 MAC2STR(peer), params);
2277 }
2278
2279
2280 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2281                         const u8 *dev_addr, const u8 *pri_dev_type,
2282                         const char *dev_name, u16 supp_config_methods,
2283                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2284                         size_t group_id_len)
2285 {
2286         struct wpa_supplicant *wpa_s = ctx;
2287         char devtype[WPS_DEV_TYPE_BUFSIZE];
2288         char params[300];
2289         u8 empty_dev_type[8];
2290         unsigned int generated_pin = 0;
2291         struct wpa_supplicant *group = NULL;
2292
2293         if (group_id) {
2294                 for (group = wpa_s->global->ifaces; group; group = group->next)
2295                 {
2296                         struct wpa_ssid *s = group->current_ssid;
2297                         if (s != NULL &&
2298                             s->mode == WPAS_MODE_P2P_GO &&
2299                             group_id_len - ETH_ALEN == s->ssid_len &&
2300                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2301                                       s->ssid_len) == 0)
2302                                 break;
2303                 }
2304         }
2305
2306         if (pri_dev_type == NULL) {
2307                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2308                 pri_dev_type = empty_dev_type;
2309         }
2310         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2311                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2312                     "dev_capab=0x%x group_capab=0x%x%s%s",
2313                     MAC2STR(dev_addr),
2314                     wps_dev_type_bin2str(pri_dev_type, devtype,
2315                                          sizeof(devtype)),
2316                     dev_name, supp_config_methods, dev_capab, group_capab,
2317                     group ? " group=" : "",
2318                     group ? group->ifname : "");
2319         params[sizeof(params) - 1] = '\0';
2320
2321         if (config_methods & WPS_CONFIG_DISPLAY) {
2322                 generated_pin = wps_generate_pin();
2323                 wpas_prov_disc_local_display(wpa_s, peer, params,
2324                                              generated_pin);
2325         } else if (config_methods & WPS_CONFIG_KEYPAD)
2326                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2327         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2328                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2329                         "%s", MAC2STR(peer), params);
2330
2331         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2332                                             P2P_PROV_DISC_SUCCESS,
2333                                             config_methods, generated_pin);
2334 }
2335
2336
2337 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2338 {
2339         struct wpa_supplicant *wpa_s = ctx;
2340         unsigned int generated_pin = 0;
2341         char params[20];
2342
2343         if (wpa_s->pending_pd_before_join &&
2344             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2345              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2346                 wpa_s->pending_pd_before_join = 0;
2347                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2348                            "join-existing-group operation");
2349                 wpas_p2p_join_start(wpa_s);
2350                 return;
2351         }
2352
2353         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2354             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2355                 os_snprintf(params, sizeof(params), " peer_go=%d",
2356                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2357         else
2358                 params[0] = '\0';
2359
2360         if (config_methods & WPS_CONFIG_DISPLAY)
2361                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2362         else if (config_methods & WPS_CONFIG_KEYPAD) {
2363                 generated_pin = wps_generate_pin();
2364                 wpas_prov_disc_local_display(wpa_s, peer, params,
2365                                              generated_pin);
2366         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2367                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2368                         "%s", MAC2STR(peer), params);
2369
2370         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2371                                             P2P_PROV_DISC_SUCCESS,
2372                                             config_methods, generated_pin);
2373 }
2374
2375
2376 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2377                                 enum p2p_prov_disc_status status)
2378 {
2379         struct wpa_supplicant *wpa_s = ctx;
2380
2381         if (wpa_s->p2p_fallback_to_go_neg) {
2382                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2383                         "failed - fall back to GO Negotiation");
2384                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2385                 return;
2386         }
2387
2388         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2389                 wpa_s->pending_pd_before_join = 0;
2390                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2391                            "join-existing-group operation (no ACK for PD "
2392                            "Req attempts)");
2393                 wpas_p2p_join_start(wpa_s);
2394                 return;
2395         }
2396
2397         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2398                 " p2p_dev_addr=" MACSTR " status=%d",
2399                 MAC2STR(peer), status);
2400
2401         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2402                                             status, 0, 0);
2403 }
2404
2405
2406 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2407                                   const u8 *go_dev_addr, const u8 *ssid,
2408                                   size_t ssid_len, int *go, u8 *group_bssid,
2409                                   int *force_freq, int persistent_group)
2410 {
2411         struct wpa_supplicant *wpa_s = ctx;
2412         struct wpa_ssid *s;
2413         u8 cur_bssid[ETH_ALEN];
2414         int res;
2415         struct wpa_supplicant *grp;
2416
2417         if (!persistent_group) {
2418                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2419                            " to join an active group", MAC2STR(sa));
2420                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2421                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2422                      == 0 ||
2423                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2424                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2425                                    "authorized invitation");
2426                         goto accept_inv;
2427                 }
2428                 /*
2429                  * Do not accept the invitation automatically; notify user and
2430                  * request approval.
2431                  */
2432                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2433         }
2434
2435         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2436         if (grp) {
2437                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2438                            "running persistent group");
2439                 if (*go)
2440                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2441                 goto accept_inv;
2442         }
2443
2444         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2445             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2446                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2447                            "invitation to re-invoke a persistent group");
2448         } else if (!wpa_s->conf->persistent_reconnect)
2449                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2450
2451         for (s = wpa_s->conf->ssid; s; s = s->next) {
2452                 if (s->disabled == 2 &&
2453                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2454                     s->ssid_len == ssid_len &&
2455                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2456                         break;
2457         }
2458
2459         if (!s) {
2460                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2461                            " requested reinvocation of an unknown group",
2462                            MAC2STR(sa));
2463                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2464         }
2465
2466         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2467                 *go = 1;
2468                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2469                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2470                                    "interface is already in use - reject "
2471                                    "invitation");
2472                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2473                 }
2474                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2475         } else if (s->mode == WPAS_MODE_P2P_GO) {
2476                 *go = 1;
2477                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2478                 {
2479                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2480                                    "interface address for the group");
2481                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2482                 }
2483                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2484                           ETH_ALEN);
2485         }
2486
2487 accept_inv:
2488         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2489
2490         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2491             wpa_s->assoc_freq) {
2492                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2493                            "the channel we are already using");
2494                 *force_freq = wpa_s->assoc_freq;
2495                 wpas_p2p_set_own_freq_preference(wpa_s, wpa_s->assoc_freq);
2496         }
2497
2498         res = wpa_drv_shared_freq(wpa_s);
2499         if (res > 0) {
2500                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2501                            "with the channel we are already using on a "
2502                            "shared interface");
2503                 *force_freq = res;
2504                 wpas_p2p_set_own_freq_preference(wpa_s, res);
2505         }
2506
2507         return P2P_SC_SUCCESS;
2508 }
2509
2510
2511 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2512                                      const u8 *ssid, size_t ssid_len,
2513                                      const u8 *go_dev_addr, u8 status,
2514                                      int op_freq)
2515 {
2516         struct wpa_supplicant *wpa_s = ctx;
2517         struct wpa_ssid *s;
2518
2519         for (s = wpa_s->conf->ssid; s; s = s->next) {
2520                 if (s->disabled == 2 &&
2521                     s->ssid_len == ssid_len &&
2522                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2523                         break;
2524         }
2525
2526         if (status == P2P_SC_SUCCESS) {
2527                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2528                            " was accepted; op_freq=%d MHz",
2529                            MAC2STR(sa), op_freq);
2530                 if (s) {
2531                         int go = s->mode == WPAS_MODE_P2P_GO;
2532                         wpas_p2p_group_add_persistent(
2533                                 wpa_s, s, go, go ? op_freq : 0, 0, NULL);
2534                 } else if (bssid) {
2535                         wpa_s->user_initiated_pd = 0;
2536                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2537                                       wpa_s->p2p_wps_method, 0);
2538                 }
2539                 return;
2540         }
2541
2542         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2543                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2544                            " was rejected (status %u)", MAC2STR(sa), status);
2545                 return;
2546         }
2547
2548         if (!s) {
2549                 if (bssid) {
2550                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2551                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2552                                 " bssid=" MACSTR " unknown-network",
2553                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2554                                 MAC2STR(bssid));
2555                 } else {
2556                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2557                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2558                                 " unknown-network",
2559                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2560                 }
2561                 return;
2562         }
2563
2564         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2565                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa="
2566                         MACSTR " persistent=%d freq=%d",
2567                         MAC2STR(sa), s->id, op_freq);
2568         } else {
2569                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa="
2570                         MACSTR " persistent=%d", MAC2STR(sa), s->id);
2571         }
2572 }
2573
2574
2575 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2576                                         struct wpa_ssid *ssid,
2577                                         const u8 *peer)
2578 {
2579         size_t i;
2580
2581         if (ssid == NULL)
2582                 return;
2583
2584         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2585                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
2586                               ETH_ALEN) == 0)
2587                         break;
2588         }
2589         if (i >= ssid->num_p2p_clients) {
2590                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2591                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2592                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2593                                    "due to invitation result", ssid->id);
2594                         wpas_notify_network_removed(wpa_s, ssid);
2595                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2596                         return;
2597                 }
2598                 return; /* Peer not found in client list */
2599         }
2600
2601         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2602                    "group %d client list due to invitation result",
2603                    MAC2STR(peer), ssid->id);
2604         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
2605                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
2606                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
2607         ssid->num_p2p_clients--;
2608 #ifndef CONFIG_NO_CONFIG_WRITE
2609         if (wpa_s->parent->conf->update_config &&
2610             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
2611                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2612 #endif /* CONFIG_NO_CONFIG_WRITE */
2613 }
2614
2615
2616 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2617                                           const u8 *peer)
2618 {
2619         struct wpa_ssid *ssid;
2620
2621         wpa_s = wpa_s->global->p2p_invite_group;
2622         if (wpa_s == NULL)
2623                 return; /* No known invitation group */
2624         ssid = wpa_s->current_ssid;
2625         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2626             !ssid->p2p_persistent_group)
2627                 return; /* Not operating as a GO in persistent group */
2628         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2629                                        ssid->ssid, ssid->ssid_len);
2630         wpas_remove_persistent_peer(wpa_s, ssid, peer);
2631 }
2632
2633
2634 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2635                                    const struct p2p_channels *channels,
2636                                    const u8 *peer)
2637 {
2638         struct wpa_supplicant *wpa_s = ctx;
2639         struct wpa_ssid *ssid;
2640
2641         if (bssid) {
2642                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2643                         "status=%d " MACSTR,
2644                         status, MAC2STR(bssid));
2645         } else {
2646                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2647                         "status=%d ", status);
2648         }
2649         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2650
2651         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
2652                    status, MAC2STR(peer));
2653         if (wpa_s->pending_invite_ssid_id == -1) {
2654                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
2655                         wpas_remove_persistent_client(wpa_s, peer);
2656                 return; /* Invitation to active group */
2657         }
2658
2659         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2660                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
2661                            "invitation exchange to indicate readiness for "
2662                            "re-invocation");
2663         }
2664
2665         if (status != P2P_SC_SUCCESS) {
2666                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
2667                         ssid = wpa_config_get_network(
2668                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
2669                         wpas_remove_persistent_peer(wpa_s, ssid, peer);
2670                 }
2671                 wpas_p2p_remove_pending_group_interface(wpa_s);
2672                 return;
2673         }
2674
2675         ssid = wpa_config_get_network(wpa_s->conf,
2676                                       wpa_s->pending_invite_ssid_id);
2677         if (ssid == NULL) {
2678                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2679                            "data matching with invitation");
2680                 return;
2681         }
2682
2683         /*
2684          * The peer could have missed our ctrl::ack frame for Invitation
2685          * Response and continue retransmitting the frame. To reduce the
2686          * likelihood of the peer not getting successful TX status for the
2687          * Invitation Response frame, wait a short time here before starting
2688          * the persistent group so that we will remain on the current channel to
2689          * acknowledge any possible retransmission from the peer.
2690          */
2691 #ifndef ANDROID_P2P
2692         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2693                 "starting persistent group");
2694         os_sleep(0, 50000);
2695 #else
2696         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 100 ms wait on current channel before "
2697                 "starting persistent group");
2698         os_sleep(0, 100000);
2699 #endif
2700
2701         wpas_p2p_group_add_persistent(wpa_s, ssid,
2702                                       ssid->mode == WPAS_MODE_P2P_GO,
2703                                       wpa_s->p2p_persistent_go_freq,
2704                                       wpa_s->p2p_go_ht40, channels);
2705 }
2706
2707
2708 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2709                                     unsigned int freq)
2710 {
2711         unsigned int i;
2712
2713         if (global->p2p_disallow_freq == NULL)
2714                 return 0;
2715
2716         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2717                 if (freq >= global->p2p_disallow_freq[i].min &&
2718                     freq <= global->p2p_disallow_freq[i].max)
2719                         return 1;
2720         }
2721
2722         return 0;
2723 }
2724
2725
2726 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2727 {
2728         reg->channel[reg->channels] = chan;
2729         reg->channels++;
2730 }
2731
2732
2733 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2734                                      struct p2p_channels *chan)
2735 {
2736         int i, cla = 0;
2737
2738         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2739                    "band");
2740
2741         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2742         chan->reg_class[cla].reg_class = 81;
2743         chan->reg_class[cla].channels = 0;
2744         for (i = 0; i < 11; i++) {
2745                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2746                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2747         }
2748         if (chan->reg_class[cla].channels)
2749                 cla++;
2750
2751         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2752                    "band");
2753
2754         /* Operating class 115 - 5 GHz, channels 36-48 */
2755         chan->reg_class[cla].reg_class = 115;
2756         chan->reg_class[cla].channels = 0;
2757         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2758                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2759         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2760                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2761         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2762                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2763         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2764                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2765         if (chan->reg_class[cla].channels)
2766                 cla++;
2767
2768         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2769                    "band");
2770
2771         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2772         chan->reg_class[cla].reg_class = 124;
2773         chan->reg_class[cla].channels = 0;
2774         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2775                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2776         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2777                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2778         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2779                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2780         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2781                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2782         if (chan->reg_class[cla].channels)
2783                 cla++;
2784
2785         chan->reg_classes = cla;
2786         return 0;
2787 }
2788
2789
2790 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2791                                           u16 num_modes,
2792                                           enum hostapd_hw_mode mode)
2793 {
2794         u16 i;
2795
2796         for (i = 0; i < num_modes; i++) {
2797                 if (modes[i].mode == mode)
2798                         return &modes[i];
2799         }
2800
2801         return NULL;
2802 }
2803
2804
2805 static int has_channel(struct wpa_global *global,
2806                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2807 {
2808         int i;
2809         unsigned int freq;
2810
2811         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2812                 chan * 5;
2813         if (wpas_p2p_disallowed_freq(global, freq))
2814                 return 0;
2815
2816         for (i = 0; i < mode->num_channels; i++) {
2817                 if (mode->channels[i].chan == chan) {
2818                         if (flags)
2819                                 *flags = mode->channels[i].flag;
2820                         return !(mode->channels[i].flag &
2821                                  (HOSTAPD_CHAN_DISABLED |
2822                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2823                                   HOSTAPD_CHAN_NO_IBSS |
2824                                   HOSTAPD_CHAN_RADAR));
2825                 }
2826         }
2827
2828         return 0;
2829 }
2830
2831
2832 struct p2p_oper_class_map {
2833         enum hostapd_hw_mode mode;
2834         u8 op_class;
2835         u8 min_chan;
2836         u8 max_chan;
2837         u8 inc;
2838         enum { BW20, BW40PLUS, BW40MINUS } bw;
2839 };
2840
2841 static struct p2p_oper_class_map op_class[] = {
2842         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2843 #if 0 /* Do not enable HT40 on 2 GHz for now */
2844         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2845         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2846 #endif
2847         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2848         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2849         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2850         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2851         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2852         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2853         { -1, 0, 0, 0, 0, BW20 }
2854 };
2855
2856
2857 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2858                                    struct hostapd_hw_modes *mode,
2859                                    u8 channel, u8 bw)
2860 {
2861         int flag;
2862
2863         if (!has_channel(wpa_s->global, mode, channel, &flag))
2864                 return -1;
2865         if (bw == BW40MINUS &&
2866             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2867              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2868                 return 0;
2869         if (bw == BW40PLUS &&
2870             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2871              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2872                 return 0;
2873         return 1;
2874 }
2875
2876
2877 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2878                                    struct p2p_channels *chan)
2879 {
2880         struct hostapd_hw_modes *mode;
2881         int cla, op;
2882
2883         if (wpa_s->hw.modes == NULL) {
2884                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2885                            "of all supported channels; assume dualband "
2886                            "support");
2887                 return wpas_p2p_default_channels(wpa_s, chan);
2888         }
2889
2890         cla = 0;
2891
2892         for (op = 0; op_class[op].op_class; op++) {
2893                 struct p2p_oper_class_map *o = &op_class[op];
2894                 u8 ch;
2895                 struct p2p_reg_class *reg = NULL;
2896
2897                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2898                 if (mode == NULL)
2899                         continue;
2900                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2901                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2902                                 continue;
2903                         if (reg == NULL) {
2904                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2905                                            "class %u", o->op_class);
2906                                 reg = &chan->reg_class[cla];
2907                                 cla++;
2908                                 reg->reg_class = o->op_class;
2909                         }
2910                         reg->channel[reg->channels] = ch;
2911                         reg->channels++;
2912                 }
2913                 if (reg) {
2914                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2915                                     reg->channel, reg->channels);
2916                 }
2917         }
2918
2919         chan->reg_classes = cla;
2920
2921         return 0;
2922 }
2923
2924
2925 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2926                            struct hostapd_hw_modes *mode, u8 channel)
2927 {
2928         int op, ret;
2929
2930         for (op = 0; op_class[op].op_class; op++) {
2931                 struct p2p_oper_class_map *o = &op_class[op];
2932                 u8 ch;
2933
2934                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2935                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2936                             o->bw == BW20 || ch != channel)
2937                                 continue;
2938                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2939                         if (ret < 0)
2940                                 continue;
2941                         else if (ret > 0)
2942                                 return (o->bw == BW40MINUS) ? -1 : 1;
2943                         else
2944                                 return 0;
2945                 }
2946         }
2947         return 0;
2948 }
2949
2950
2951 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2952                         size_t buf_len)
2953 {
2954         struct wpa_supplicant *wpa_s = ctx;
2955
2956         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2957                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2958                         break;
2959         }
2960         if (wpa_s == NULL)
2961                 return -1;
2962
2963         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2964 }
2965
2966
2967 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2968 {
2969         struct wpa_supplicant *wpa_s = ctx;
2970
2971         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2972                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2973                 if (ssid == NULL)
2974                         continue;
2975                 if (ssid->mode != WPAS_MODE_INFRA)
2976                         continue;
2977                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2978                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2979                         continue;
2980                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2981                         return 1;
2982         }
2983
2984         return 0;
2985 }
2986
2987
2988 /**
2989  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2990  * @global: Pointer to global data from wpa_supplicant_init()
2991  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2992  * Returns: 0 on success, -1 on failure
2993  */
2994 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2995 {
2996         struct p2p_config p2p;
2997         unsigned int r;
2998         int i;
2999
3000         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3001                 return 0;
3002
3003         if (global->p2p)
3004                 return 0;
3005
3006         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3007                 struct p2p_params params;
3008
3009                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
3010                 os_memset(&params, 0, sizeof(params));
3011                 params.dev_name = wpa_s->conf->device_name;
3012                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
3013                           WPS_DEV_TYPE_LEN);
3014                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3015                 os_memcpy(params.sec_dev_type,
3016                           wpa_s->conf->sec_device_type,
3017                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3018
3019                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
3020                         return -1;
3021
3022                 return 0;
3023         }
3024
3025         os_memset(&p2p, 0, sizeof(p2p));
3026         p2p.msg_ctx = wpa_s;
3027         p2p.cb_ctx = wpa_s;
3028         p2p.p2p_scan = wpas_p2p_scan;
3029         p2p.send_action = wpas_send_action;
3030         p2p.send_action_done = wpas_send_action_done;
3031         p2p.go_neg_completed = wpas_go_neg_completed;
3032         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3033         p2p.dev_found = wpas_dev_found;
3034         p2p.dev_lost = wpas_dev_lost;
3035         p2p.start_listen = wpas_start_listen;
3036         p2p.stop_listen = wpas_stop_listen;
3037         p2p.send_probe_resp = wpas_send_probe_resp;
3038         p2p.sd_request = wpas_sd_request;
3039         p2p.sd_response = wpas_sd_response;
3040         p2p.prov_disc_req = wpas_prov_disc_req;
3041         p2p.prov_disc_resp = wpas_prov_disc_resp;
3042         p2p.prov_disc_fail = wpas_prov_disc_fail;
3043         p2p.invitation_process = wpas_invitation_process;
3044         p2p.invitation_received = wpas_invitation_received;
3045         p2p.invitation_result = wpas_invitation_result;
3046         p2p.get_noa = wpas_get_noa;
3047         p2p.go_connected = wpas_go_connected;
3048
3049         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3050         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3051         p2p.dev_name = wpa_s->conf->device_name;
3052         p2p.manufacturer = wpa_s->conf->manufacturer;
3053         p2p.model_name = wpa_s->conf->model_name;
3054         p2p.model_number = wpa_s->conf->model_number;
3055         p2p.serial_number = wpa_s->conf->serial_number;
3056         if (wpa_s->wps) {
3057                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3058                 p2p.config_methods = wpa_s->wps->config_methods;
3059         }
3060
3061         if (wpa_s->conf->p2p_listen_reg_class &&
3062             wpa_s->conf->p2p_listen_channel) {
3063                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3064                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3065         } else {
3066                 p2p.reg_class = 81;
3067                 /*
3068                  * Pick one of the social channels randomly as the listen
3069                  * channel.
3070                  */
3071                 os_get_random((u8 *) &r, sizeof(r));
3072                 p2p.channel = 1 + (r % 3) * 5;
3073         }
3074         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3075
3076         if (wpa_s->conf->p2p_oper_reg_class &&
3077             wpa_s->conf->p2p_oper_channel) {
3078                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3079                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3080                 p2p.cfg_op_channel = 1;
3081                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3082                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3083
3084         } else {
3085                 p2p.op_reg_class = 81;
3086                 /*
3087                  * Use random operation channel from (1, 6, 11) if no other
3088                  * preference is indicated.
3089                  */
3090                 os_get_random((u8 *) &r, sizeof(r));
3091                 p2p.op_channel = 1 + (r % 3) * 5;
3092                 p2p.cfg_op_channel = 0;
3093                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3094                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3095         }
3096         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3097                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3098                 p2p.country[2] = 0x04;
3099         } else
3100                 os_memcpy(p2p.country, "XX\x04", 3);
3101
3102         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
3103                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3104                            "channel list");
3105                 return -1;
3106         }
3107
3108         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3109                   WPS_DEV_TYPE_LEN);
3110
3111         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3112         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3113                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3114
3115         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3116                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3117
3118         p2p.max_peers = 100;
3119
3120         if (wpa_s->conf->p2p_ssid_postfix) {
3121                 p2p.ssid_postfix_len =
3122                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3123                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3124                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3125                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3126                           p2p.ssid_postfix_len);
3127         }
3128
3129         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3130
3131         p2p.max_listen = wpa_s->max_remain_on_chan;
3132
3133 #ifdef ANDROID_P2P
3134         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) {
3135                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
3136                 wpa_printf(MSG_DEBUG, "P2P: Multi channel concurrency support");
3137         } else {
3138         // Add support for WPA_DRIVER_FLAGS_P2P_CONCURRENT
3139                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
3140                 wpa_printf(MSG_DEBUG, "P2P: Single channel concurrency support");
3141         }
3142 #endif
3143
3144         global->p2p = p2p_init(&p2p);
3145         if (global->p2p == NULL)
3146                 return -1;
3147         global->p2p_init_wpa_s = wpa_s;
3148
3149         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3150                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3151                         continue;
3152                 p2p_add_wps_vendor_extension(
3153                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3154         }
3155
3156         return 0;
3157 }
3158
3159
3160 /**
3161  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3162  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3163  *
3164  * This function deinitialize per-interface P2P data.
3165  */
3166 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3167 {
3168         if (wpa_s->driver && wpa_s->drv_priv)
3169                 wpa_drv_probe_req_report(wpa_s, 0);
3170
3171         if (wpa_s->go_params) {
3172                 /* Clear any stored provisioning info */
3173                 p2p_clear_provisioning_info(
3174                         wpa_s->global->p2p,
3175                         wpa_s->go_params->peer_device_addr);
3176         }
3177
3178         os_free(wpa_s->go_params);
3179         wpa_s->go_params = NULL;
3180         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3181         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3182         wpa_s->p2p_long_listen = 0;
3183         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3184         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3185         wpas_p2p_remove_pending_group_interface(wpa_s);
3186
3187         /* TODO: remove group interface from the driver if this wpa_s instance
3188          * is on top of a P2P group interface */
3189 }
3190
3191
3192 /**
3193  * wpas_p2p_deinit_global - Deinitialize global P2P module
3194  * @global: Pointer to global data from wpa_supplicant_init()
3195  *
3196  * This function deinitializes the global (per device) P2P module.
3197  */
3198 void wpas_p2p_deinit_global(struct wpa_global *global)
3199 {
3200         struct wpa_supplicant *wpa_s, *tmp;
3201
3202         wpa_s = global->ifaces;
3203         if (wpa_s)
3204                 wpas_p2p_service_flush(wpa_s);
3205
3206         if (global->p2p == NULL)
3207                 return;
3208
3209         /* Remove remaining P2P group interfaces */
3210         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3211                 wpa_s = wpa_s->next;
3212         while (wpa_s) {
3213                 tmp = global->ifaces;
3214                 while (tmp &&
3215                        (tmp == wpa_s ||
3216                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3217                         tmp = tmp->next;
3218                 }
3219                 if (tmp == NULL)
3220                         break;
3221                 /* Disconnect from the P2P group and deinit the interface */
3222                 wpas_p2p_disconnect(tmp);
3223         }
3224
3225         /*
3226          * Deinit GO data on any possibly remaining interface (if main
3227          * interface is used as GO).
3228          */
3229         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3230                 if (wpa_s->ap_iface)
3231                         wpas_p2p_group_deinit(wpa_s);
3232         }
3233
3234         p2p_deinit(global->p2p);
3235         global->p2p = NULL;
3236         global->p2p_init_wpa_s = NULL;
3237 }
3238
3239
3240 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3241 {
3242         if (wpa_s->conf->p2p_no_group_iface)
3243                 return 0; /* separate interface disabled per configuration */
3244         if (wpa_s->drv_flags &
3245             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3246              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3247                 return 1; /* P2P group requires a new interface in every case
3248                            */
3249         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3250                 return 0; /* driver does not support concurrent operations */
3251         if (wpa_s->global->ifaces->next)
3252                 return 1; /* more that one interface already in use */
3253         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3254                 return 1; /* this interface is already in use */
3255         return 0;
3256 }
3257
3258
3259 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3260                                  const u8 *peer_addr,
3261                                  enum p2p_wps_method wps_method,
3262                                  int go_intent, const u8 *own_interface_addr,
3263                                  unsigned int force_freq, int persistent_group,
3264                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3265 {
3266         if (persistent_group && wpa_s->conf->persistent_reconnect)
3267                 persistent_group = 2;
3268
3269         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3270                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
3271                                            go_intent, own_interface_addr,
3272                                            force_freq, persistent_group);
3273         }
3274
3275         /*
3276          * Increase GO config timeout if HT40 is used since it takes some time
3277          * to scan channels for coex purposes before the BSS can be started.
3278          */
3279         p2p_set_config_timeout(wpa_s->global->p2p,
3280                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3281
3282         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3283                            go_intent, own_interface_addr, force_freq,
3284                            persistent_group, ssid ? ssid->ssid : NULL,
3285                            ssid ? ssid->ssid_len : 0,
3286                            wpa_s->p2p_pd_before_go_neg, pref_freq);
3287 }
3288
3289
3290 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3291                                 const u8 *peer_addr,
3292                                 enum p2p_wps_method wps_method,
3293                                 int go_intent, const u8 *own_interface_addr,
3294                                 unsigned int force_freq, int persistent_group,
3295                                 struct wpa_ssid *ssid, unsigned int pref_freq)
3296 {
3297         if (persistent_group && wpa_s->conf->persistent_reconnect)
3298                 persistent_group = 2;
3299
3300         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3301                 return -1;
3302
3303         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3304                              go_intent, own_interface_addr, force_freq,
3305                              persistent_group, ssid ? ssid->ssid : NULL,
3306                              ssid ? ssid->ssid_len : 0, pref_freq);
3307 }
3308
3309
3310 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3311 {
3312         wpa_s->p2p_join_scan_count++;
3313         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3314                    wpa_s->p2p_join_scan_count);
3315         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3316                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3317                            " for join operationg - stop join attempt",
3318                            MAC2STR(wpa_s->pending_join_iface_addr));
3319                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3320                 if (wpa_s->p2p_auto_pd) {
3321                         wpa_s->p2p_auto_pd = 0;
3322                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3323                                 " p2p_dev_addr=" MACSTR " status=N/A",
3324                                 MAC2STR(wpa_s->pending_join_dev_addr));
3325                         return;
3326                 }
3327                 wpa_msg(wpa_s->parent, MSG_INFO,
3328                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3329         }
3330 }
3331
3332
3333 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3334 {
3335         struct wpa_supplicant *iface;
3336         int shared_freq;
3337         u8 bssid[ETH_ALEN];
3338
3339         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3340                 return 0;
3341
3342         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3343                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3344                         continue;
3345                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3346                         continue;
3347                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3348                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3349                         shared_freq = iface->current_ssid->frequency;
3350                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3351                         shared_freq = iface->assoc_freq;
3352                 else
3353                         shared_freq = 0;
3354
3355                 if (shared_freq && freq != shared_freq) {
3356                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3357                                    "connected on %d MHz - new connection on "
3358                                    "%d MHz", iface->ifname, shared_freq, freq);
3359                         return 1;
3360                 }
3361         }
3362
3363         shared_freq = wpa_drv_shared_freq(wpa_s);
3364         if (shared_freq > 0 && shared_freq != freq) {
3365                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3366                            "virtual interface connected on %d MHz - new "
3367                            "connection on %d MHz", shared_freq, freq);
3368                 return 1;
3369         }
3370
3371         return 0;
3372 }
3373
3374
3375 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3376                             const u8 *peer_dev_addr)
3377 {
3378         struct wpa_bss *bss;
3379         int updated;
3380
3381         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3382         if (bss == NULL)
3383                 return -1;
3384         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3385                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3386                            "last scan");
3387                 return 0;
3388         }
3389
3390         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3391         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3392                    "%ld.%06ld (%supdated in last scan)",
3393                    bss->last_update.sec, bss->last_update.usec,
3394                    updated ? "": "not ");
3395
3396         return updated;
3397 }
3398
3399
3400 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3401                                    struct wpa_scan_results *scan_res)
3402 {
3403         struct wpa_bss *bss;
3404         int freq;
3405         u8 iface_addr[ETH_ALEN];
3406
3407         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3408
3409         if (wpa_s->global->p2p_disabled)
3410                 return;
3411
3412         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3413                    scan_res ? (int) scan_res->num : -1,
3414                    wpa_s->p2p_auto_join ? "auto_" : "");
3415
3416         if (scan_res)
3417                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3418
3419         if (wpa_s->p2p_auto_pd) {
3420                 int join = wpas_p2p_peer_go(wpa_s,
3421                                             wpa_s->pending_join_dev_addr);
3422                 if (join == 0 &&
3423                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3424                         wpa_s->auto_pd_scan_retry++;
3425                         bss = wpa_bss_get_bssid(wpa_s,
3426                                                 wpa_s->pending_join_dev_addr);
3427                         if (bss) {
3428                                 freq = bss->freq;
3429                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3430                                            "the peer " MACSTR " at %d MHz",
3431                                            wpa_s->auto_pd_scan_retry,
3432                                            MAC2STR(wpa_s->
3433                                                    pending_join_dev_addr),
3434                                            freq);
3435                                 wpas_p2p_join_scan_req(wpa_s, freq);
3436                                 return;
3437                         }
3438                 }
3439
3440                 if (join < 0)
3441                         join = 0;
3442
3443                 wpa_s->p2p_auto_pd = 0;
3444                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3445                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3446                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3447                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3448                                       wpa_s->pending_join_dev_addr,
3449                                       wpa_s->pending_pd_config_methods, join,
3450                                       0, wpa_s->user_initiated_pd) < 0) {
3451                         wpa_s->p2p_auto_pd = 0;
3452                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3453                                 " p2p_dev_addr=" MACSTR " status=N/A",
3454                                 MAC2STR(wpa_s->pending_join_dev_addr));
3455                 }
3456                 return;
3457         }
3458
3459         if (wpa_s->p2p_auto_join) {
3460                 int join = wpas_p2p_peer_go(wpa_s,
3461                                             wpa_s->pending_join_dev_addr);
3462                 if (join < 0) {
3463                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3464                                    "running a GO -> use GO Negotiation");
3465                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3466                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3467                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3468                                          wpa_s->p2p_go_intent,
3469                                          wpa_s->p2p_connect_freq,
3470                                          wpa_s->p2p_persistent_id,
3471                                          wpa_s->p2p_pd_before_go_neg,
3472                                          wpa_s->p2p_go_ht40);
3473                         return;
3474                 }
3475
3476                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3477                            "try to join the group", join ? "" :
3478                            " in older scan");
3479                 if (!join)
3480                         wpa_s->p2p_fallback_to_go_neg = 1;
3481         }
3482
3483         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3484                                  wpa_s->pending_join_iface_addr);
3485         if (freq < 0 &&
3486             p2p_get_interface_addr(wpa_s->global->p2p,
3487                                    wpa_s->pending_join_dev_addr,
3488                                    iface_addr) == 0 &&
3489             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3490         {
3491                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3492                            "address for join from " MACSTR " to " MACSTR
3493                            " based on newly discovered P2P peer entry",
3494                            MAC2STR(wpa_s->pending_join_iface_addr),
3495                            MAC2STR(iface_addr));
3496                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3497                           ETH_ALEN);
3498
3499                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3500                                          wpa_s->pending_join_iface_addr);
3501         }
3502         if (freq >= 0) {
3503                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3504                            "from P2P peer table: %d MHz", freq);
3505         }
3506         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3507         if (bss) {
3508                 freq = bss->freq;
3509                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3510                            "from BSS table: %d MHz", freq);
3511         }
3512         if (freq > 0) {
3513                 u16 method;
3514
3515                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3516                         wpa_msg(wpa_s->parent, MSG_INFO,
3517                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3518                                 "reason=FREQ_CONFLICT");
3519                         return;
3520                 }
3521
3522                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3523                            "prior to joining an existing group (GO " MACSTR
3524                            " freq=%u MHz)",
3525                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3526                 wpa_s->pending_pd_before_join = 1;
3527
3528                 switch (wpa_s->pending_join_wps_method) {
3529                 case WPS_PIN_DISPLAY:
3530                         method = WPS_CONFIG_KEYPAD;
3531                         break;
3532                 case WPS_PIN_KEYPAD:
3533                         method = WPS_CONFIG_DISPLAY;
3534                         break;
3535                 case WPS_PBC:
3536                         method = WPS_CONFIG_PUSHBUTTON;
3537                         break;
3538                 default:
3539                         method = 0;
3540                         break;
3541                 }
3542
3543                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3544                                                wpa_s->pending_join_dev_addr) ==
3545                      method)) {
3546                         /*
3547                          * We have already performed provision discovery for
3548                          * joining the group. Proceed directly to join
3549                          * operation without duplicated provision discovery. */
3550                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3551                                    "with " MACSTR " already done - proceed to "
3552                                    "join",
3553                                    MAC2STR(wpa_s->pending_join_dev_addr));
3554                         wpa_s->pending_pd_before_join = 0;
3555                         goto start;
3556                 }
3557
3558                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3559                                       wpa_s->pending_join_dev_addr, method, 1,
3560                                       freq, wpa_s->user_initiated_pd) < 0) {
3561                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3562                                    "Discovery Request before joining an "
3563                                    "existing group");
3564                         wpa_s->pending_pd_before_join = 0;
3565                         goto start;
3566                 }
3567                 return;
3568         }
3569
3570         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3571         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3572         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3573         wpas_p2p_check_join_scan_limit(wpa_s);
3574         return;
3575
3576 start:
3577         /* Start join operation immediately */
3578         wpas_p2p_join_start(wpa_s);
3579 }
3580
3581
3582 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3583 {
3584         int ret;
3585         struct wpa_driver_scan_params params;
3586         struct wpabuf *wps_ie, *ies;
3587         size_t ielen;
3588         int freqs[2] = { 0, 0 };
3589 #ifdef ANDROID_P2P
3590         int oper_freq;
3591
3592         /* If freq is not provided, check the operating freq of the GO and do a
3593          * a directed scan to save time
3594          */
3595         if(!freq) {
3596                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3597                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3598         }
3599 #endif
3600         os_memset(&params, 0, sizeof(params));
3601
3602         /* P2P Wildcard SSID */
3603         params.num_ssids = 1;
3604         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3605         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3606
3607         wpa_s->wps->dev.p2p = 1;
3608         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3609                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3610                                         NULL);
3611         if (wps_ie == NULL) {
3612                 wpas_p2p_scan_res_join(wpa_s, NULL);
3613                 return;
3614         }
3615
3616         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3617         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3618         if (ies == NULL) {
3619                 wpabuf_free(wps_ie);
3620                 wpas_p2p_scan_res_join(wpa_s, NULL);
3621                 return;
3622         }
3623         wpabuf_put_buf(ies, wps_ie);
3624         wpabuf_free(wps_ie);
3625
3626         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3627
3628         params.p2p_probe = 1;
3629         params.extra_ies = wpabuf_head(ies);
3630         params.extra_ies_len = wpabuf_len(ies);
3631         if (freq > 0) {
3632                 freqs[0] = freq;
3633                 params.freqs = freqs;
3634         }
3635
3636         /*
3637          * Run a scan to update BSS table and start Provision Discovery once
3638          * the new scan results become available.
3639          */
3640         ret = wpa_drv_scan(wpa_s, &params);
3641         if (!ret)
3642                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3643
3644         wpabuf_free(ies);
3645
3646         if (ret) {
3647                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3648                            "try again later");
3649                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3650                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3651                 wpas_p2p_check_join_scan_limit(wpa_s);
3652         }
3653 }
3654
3655
3656 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3657 {
3658         struct wpa_supplicant *wpa_s = eloop_ctx;
3659         wpas_p2p_join_scan_req(wpa_s, 0);
3660 }
3661
3662
3663 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3664                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3665                          int auto_join)
3666 {
3667         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3668                    MACSTR " dev " MACSTR ")%s",
3669                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3670                    auto_join ? " (auto_join)" : "");
3671
3672         wpa_s->p2p_auto_pd = 0;
3673         wpa_s->p2p_auto_join = !!auto_join;
3674         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3675         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3676         wpa_s->pending_join_wps_method = wps_method;
3677
3678         /* Make sure we are not running find during connection establishment */
3679         wpas_p2p_stop_find(wpa_s);
3680
3681         wpa_s->p2p_join_scan_count = 0;
3682         wpas_p2p_join_scan(wpa_s, NULL);
3683         return 0;
3684 }
3685
3686
3687 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3688 {
3689         struct wpa_supplicant *group;
3690         struct p2p_go_neg_results res;
3691         struct wpa_bss *bss;
3692
3693         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3694         if (group == NULL)
3695                 return -1;
3696         if (group != wpa_s) {
3697                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3698                           sizeof(group->p2p_pin));
3699                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3700         } else {
3701                 /*
3702                  * Need to mark the current interface for p2p_group_formation
3703                  * when a separate group interface is not used. This is needed
3704                  * to allow p2p_cancel stop a pending p2p_connect-join.
3705                  * wpas_p2p_init_group_interface() addresses this for the case
3706                  * where a separate group interface is used.
3707                  */
3708                 wpa_s->global->p2p_group_formation = wpa_s;
3709         }
3710
3711         group->p2p_in_provisioning = 1;
3712         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3713
3714         os_memset(&res, 0, sizeof(res));
3715         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3716                   ETH_ALEN);
3717         res.wps_method = wpa_s->pending_join_wps_method;
3718         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3719         if (bss) {
3720                 res.freq = bss->freq;
3721                 res.ssid_len = bss->ssid_len;
3722                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3723         }
3724
3725         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3726                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3727                            "starting client");
3728                 wpa_drv_cancel_remain_on_channel(wpa_s);
3729                 wpa_s->off_channel_freq = 0;
3730                 wpa_s->roc_waiting_drv_freq = 0;
3731         }
3732         wpas_start_wps_enrollee(group, &res);
3733
3734         /*
3735          * Allow a longer timeout for join-a-running-group than normal 15
3736          * second group formation timeout since the GO may not have authorized
3737          * our connection yet.
3738          */
3739         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3740         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3741                                wpa_s, NULL);
3742
3743         return 0;
3744 }
3745
3746
3747 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
3748                                 int *force_freq, int *pref_freq,
3749                                 int *oper_freq)
3750 {
3751         if (freq > 0) {
3752                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3753                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3754                                    "(%u MHz) is not supported for P2P uses",
3755                                    freq);
3756                         return -3;
3757                 }
3758
3759                 if (*oper_freq > 0 && freq != *oper_freq &&
3760                     !(wpa_s->drv_flags &
3761                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3762                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3763                                    "on %u MHz while connected on another "
3764                                    "channel (%u MHz)", freq, *oper_freq);
3765                         return -2;
3766                 }
3767                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3768                            "requested channel (%u MHz)", freq);
3769                 *force_freq = freq;
3770         } else if (*oper_freq > 0 &&
3771                    !p2p_supported_freq(wpa_s->global->p2p, *oper_freq)) {
3772                 if (!(wpa_s->drv_flags &
3773                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3774                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3775                                    "while connected on non-P2P supported "
3776                                    "channel (%u MHz)", *oper_freq);
3777                         return -2;
3778                 }
3779                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3780                            "(%u MHz) not available for P2P - try to use "
3781                            "another channel", *oper_freq);
3782                 *force_freq = 0;
3783         } else if (*oper_freq > 0 && *pref_freq == 0 &&
3784                    (wpa_s->drv_flags &
3785                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3786                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we "
3787                            "are already using (%u MHz) on another interface",
3788                            *oper_freq);
3789                 *pref_freq = *oper_freq;
3790         } else if (*oper_freq > 0) {
3791                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3792                            "channel we are already using (%u MHz) on another "
3793                            "interface", *oper_freq);
3794                 *force_freq = *oper_freq;
3795         }
3796
3797         return 0;
3798 }
3799
3800
3801 /**
3802  * wpas_p2p_connect - Request P2P Group Formation to be started
3803  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3804  * @peer_addr: Address of the peer P2P Device
3805  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3806  * @persistent_group: Whether to create a persistent group
3807  * @auto_join: Whether to select join vs. GO Negotiation automatically
3808  * @join: Whether to join an existing group (as a client) instead of starting
3809  *      Group Owner negotiation; @peer_addr is BSSID in that case
3810  * @auth: Whether to only authorize the connection instead of doing that and
3811  *      initiating Group Owner negotiation
3812  * @go_intent: GO Intent or -1 to use default
3813  * @freq: Frequency for the group or 0 for auto-selection
3814  * @persistent_id: Persistent group credentials to use for forcing GO
3815  *      parameters or -1 to generate new values (SSID/passphrase)
3816  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3817  *      interoperability workaround when initiating group formation
3818  * @ht40: Start GO with 40 MHz channel width
3819  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3820  *      failure, -2 on failure due to channel not currently available,
3821  *      -3 if forced channel is not supported
3822  */
3823 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3824                      const char *pin, enum p2p_wps_method wps_method,
3825                      int persistent_group, int auto_join, int join, int auth,
3826                      int go_intent, int freq, int persistent_id, int pd,
3827                      int ht40)
3828 {
3829         int force_freq = 0, pref_freq = 0, oper_freq = 0;
3830         u8 bssid[ETH_ALEN];
3831         int ret = 0, res;
3832         enum wpa_driver_if_type iftype;
3833         const u8 *if_addr;
3834         struct wpa_ssid *ssid = NULL;
3835
3836         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3837                 return -1;
3838
3839         if (persistent_id >= 0) {
3840                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3841                 if (ssid == NULL || ssid->disabled != 2 ||
3842                     ssid->mode != WPAS_MODE_P2P_GO)
3843                         return -1;
3844         }
3845
3846         if (go_intent < 0)
3847                 go_intent = wpa_s->conf->p2p_go_intent;
3848
3849         if (!auth)
3850                 wpa_s->p2p_long_listen = 0;
3851
3852         wpa_s->p2p_wps_method = wps_method;
3853         wpa_s->p2p_persistent_group = !!persistent_group;
3854         wpa_s->p2p_persistent_id = persistent_id;
3855         wpa_s->p2p_go_intent = go_intent;
3856         wpa_s->p2p_connect_freq = freq;
3857         wpa_s->p2p_fallback_to_go_neg = 0;
3858         wpa_s->p2p_pd_before_go_neg = !!pd;
3859         wpa_s->p2p_go_ht40 = !!ht40;
3860
3861         if (pin)
3862                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3863         else if (wps_method == WPS_PIN_DISPLAY) {
3864                 ret = wps_generate_pin();
3865                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3866                             ret);
3867                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3868                            wpa_s->p2p_pin);
3869         } else
3870                 wpa_s->p2p_pin[0] = '\0';
3871
3872         if (join || auto_join) {
3873                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3874                 if (auth) {
3875                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3876                                    "connect a running group from " MACSTR,
3877                                    MAC2STR(peer_addr));
3878                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3879                         return ret;
3880                 }
3881                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3882                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3883                                            iface_addr) < 0) {
3884                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3885                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3886                                          dev_addr);
3887                 }
3888                 if (auto_join) {
3889                         os_get_time(&wpa_s->p2p_auto_started);
3890                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3891                                    "%ld.%06ld",
3892                                    wpa_s->p2p_auto_started.sec,
3893                                    wpa_s->p2p_auto_started.usec);
3894                 }
3895                 wpa_s->user_initiated_pd = 1;
3896                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3897                                   auto_join) < 0)
3898                         return -1;
3899                 return ret;
3900         }
3901
3902         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3903             wpa_s->assoc_freq) {
3904                 oper_freq = wpa_s->assoc_freq;
3905         } else {
3906                 oper_freq = wpa_drv_shared_freq(wpa_s);
3907                 if (oper_freq < 0)
3908                         oper_freq = 0;
3909         }
3910
3911         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
3912                                    &oper_freq);
3913         if (res)
3914                 return res;
3915         wpas_p2p_set_own_freq_preference(wpa_s, oper_freq);
3916
3917         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3918
3919         if (wpa_s->create_p2p_iface) {
3920                 /* Prepare to add a new interface for the group */
3921                 iftype = WPA_IF_P2P_GROUP;
3922                 if (go_intent == 15)
3923                         iftype = WPA_IF_P2P_GO;
3924                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3925                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3926                                    "interface for the group");
3927                         return -1;
3928                 }
3929
3930                 if_addr = wpa_s->pending_interface_addr;
3931         } else
3932                 if_addr = wpa_s->own_addr;
3933
3934         if (auth) {
3935                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3936                                          go_intent, if_addr,
3937                                          force_freq, persistent_group, ssid,
3938                                          pref_freq) < 0)
3939                         return -1;
3940                 return ret;
3941         }
3942
3943         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3944                                   go_intent, if_addr, force_freq,
3945                                   persistent_group, ssid, pref_freq) < 0) {
3946                 if (wpa_s->create_p2p_iface)
3947                         wpas_p2p_remove_pending_group_interface(wpa_s);
3948                 return -1;
3949         }
3950         return ret;
3951 }
3952
3953
3954 /**
3955  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3956  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3957  * @freq: Frequency of the channel in MHz
3958  * @duration: Duration of the stay on the channel in milliseconds
3959  *
3960  * This callback is called when the driver indicates that it has started the
3961  * requested remain-on-channel duration.
3962  */
3963 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3964                                    unsigned int freq, unsigned int duration)
3965 {
3966         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3967                 return;
3968         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3969                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3970                               wpa_s->pending_listen_duration);
3971                 wpa_s->pending_listen_freq = 0;
3972         }
3973 }
3974
3975
3976 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3977                                  unsigned int timeout)
3978 {
3979         /* Limit maximum Listen state time based on driver limitation. */
3980         if (timeout > wpa_s->max_remain_on_chan)
3981                 timeout = wpa_s->max_remain_on_chan;
3982
3983         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3984                 return wpa_drv_p2p_listen(wpa_s, timeout);
3985
3986         return p2p_listen(wpa_s->global->p2p, timeout);
3987 }
3988
3989
3990 /**
3991  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3992  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3993  * @freq: Frequency of the channel in MHz
3994  *
3995  * This callback is called when the driver indicates that a remain-on-channel
3996  * operation has been completed, i.e., the duration on the requested channel
3997  * has timed out.
3998  */
3999 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4000                                           unsigned int freq)
4001 {
4002         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4003                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4004                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4005         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4006                 return;
4007         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4008                 return; /* P2P module started a new operation */
4009         if (offchannel_pending_action_tx(wpa_s))
4010                 return;
4011         if (wpa_s->p2p_long_listen > 0)
4012                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4013         if (wpa_s->p2p_long_listen > 0) {
4014                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4015                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4016         }
4017 }
4018
4019
4020 /**
4021  * wpas_p2p_group_remove - Remove a P2P group
4022  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4023  * @ifname: Network interface name of the group interface or "*" to remove all
4024  *      groups
4025  * Returns: 0 on success, -1 on failure
4026  *
4027  * This function is used to remove a P2P group. This can be used to disconnect
4028  * from a group in which the local end is a P2P Client or to end a P2P Group in
4029  * case the local end is the Group Owner. If a virtual network interface was
4030  * created for this group, that interface will be removed. Otherwise, only the
4031  * configured P2P group network will be removed from the interface.
4032  */
4033 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4034 {
4035         struct wpa_global *global = wpa_s->global;
4036
4037         if (os_strcmp(ifname, "*") == 0) {
4038                 struct wpa_supplicant *prev;
4039                 wpa_s = global->ifaces;
4040                 while (wpa_s) {
4041                         prev = wpa_s;
4042                         wpa_s = wpa_s->next;
4043                         wpas_p2p_disconnect(prev);
4044                 }
4045                 return 0;
4046         }
4047
4048         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4049                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4050                         break;
4051         }
4052
4053         return wpas_p2p_disconnect(wpa_s);
4054 }
4055
4056
4057 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
4058 {
4059         if (channels == NULL)
4060                 return 1; /* Assume no restrictions */
4061         return p2p_channels_includes_freq(channels, freq);
4062 }
4063
4064
4065 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4066                                    struct p2p_go_neg_results *params,
4067                                    int freq, int ht40,
4068                                    const struct p2p_channels *channels)
4069 {
4070         u8 bssid[ETH_ALEN];
4071         int res;
4072
4073         os_memset(params, 0, sizeof(*params));
4074         params->role_go = 1;
4075         params->ht40 = ht40;
4076         if (freq) {
4077                 if (!freq_included(channels, freq)) {
4078                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4079                                    "accepted", freq);
4080                         return -1;
4081                 }
4082                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4083                            "frequency %d MHz", freq);
4084                 params->freq = freq;
4085         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4086                    wpa_s->conf->p2p_oper_channel >= 1 &&
4087                    wpa_s->conf->p2p_oper_channel <= 11 &&
4088                    freq_included(channels,
4089                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4090                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4091                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4092                            "frequency %d MHz", params->freq);
4093         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4094                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4095                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4096                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4097                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4098                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4099                    freq_included(channels,
4100                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4101                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4102                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4103                            "frequency %d MHz", params->freq);
4104         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4105                    wpa_s->best_overall_freq > 0 &&
4106                    p2p_supported_freq(wpa_s->global->p2p,
4107                                       wpa_s->best_overall_freq) &&
4108                    freq_included(channels, wpa_s->best_overall_freq)) {
4109                 params->freq = wpa_s->best_overall_freq;
4110                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
4111                            "channel %d MHz", params->freq);
4112         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4113                    wpa_s->best_24_freq > 0 &&
4114                    p2p_supported_freq(wpa_s->global->p2p,
4115                                       wpa_s->best_24_freq) &&
4116                    freq_included(channels, wpa_s->best_24_freq)) {
4117                 params->freq = wpa_s->best_24_freq;
4118                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
4119                            "channel %d MHz", params->freq);
4120         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
4121                    wpa_s->best_5_freq > 0 &&
4122                    p2p_supported_freq(wpa_s->global->p2p,
4123                                       wpa_s->best_5_freq) &&
4124                    freq_included(channels, wpa_s->best_5_freq)) {
4125                 params->freq = wpa_s->best_5_freq;
4126                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
4127                            "channel %d MHz", params->freq);
4128         } else {
4129                 int chan;
4130                 for (chan = 0; chan < 11; chan++) {
4131                         params->freq = 2412 + chan * 5;
4132                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
4133                                                       params->freq) &&
4134                             freq_included(channels, params->freq))
4135                                 break;
4136                 }
4137                 if (chan == 11) {
4138                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
4139                                    "allowed");
4140                         return -1;
4141                 }
4142                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
4143                            "known)", params->freq);
4144         }
4145
4146         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
4147             wpa_s->assoc_freq && !freq) {
4148                 if (!p2p_supported_freq(wpa_s->global->p2p, wpa_s->assoc_freq)
4149                     || !freq_included(channels, wpa_s->assoc_freq)) {
4150                         if (wpa_s->drv_flags &
4151                             WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) {
4152                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on "
4153                                            "the channel we are already using "
4154                                            "(%u MHz) - allow multi-channel "
4155                                            "concurrency", wpa_s->assoc_freq);
4156                         } else {
4157                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on "
4158                                            "the channel we are already using "
4159                                            "(%u MHz)", wpa_s->assoc_freq);
4160                                 return -1;
4161                         }
4162                 } else {
4163                         wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we "
4164                                    "are already using (%u MHz)",
4165                                    wpa_s->assoc_freq);
4166                         params->freq = wpa_s->assoc_freq;
4167                 }
4168         }
4169
4170         res = wpa_drv_shared_freq(wpa_s);
4171         if (res > 0 && !freq &&
4172             (!p2p_supported_freq(wpa_s->global->p2p, res) ||
4173              !freq_included(channels, res))) {
4174                 if (wpa_s->drv_flags &
4175                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) {
4176                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on the "
4177                                    "channel we are already using on a shared "
4178                                    "interface (%u MHz) - allow multi-channel "
4179                                    "concurrency", res);
4180                 } else {
4181                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on the "
4182                                    "channel we are already using on a shared "
4183                                    "interface (%u MHz)", res);
4184                         return -1;
4185                 }
4186         } else if (res > 0 && !freq) {
4187                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
4188                            "already using on a shared interface");
4189                 params->freq = res;
4190                 if (!freq_included(channels, params->freq)) {
4191                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4192                                    "accepted", params->freq);
4193                         return -1;
4194                 }
4195         } else if (res > 0 && freq != res &&
4196                    !(wpa_s->drv_flags &
4197                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
4198                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
4199                            "while connected on another channel (%u MHz)",
4200                            freq, res);
4201                 return -1;
4202         }
4203
4204         return 0;
4205 }
4206
4207
4208 static struct wpa_supplicant *
4209 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
4210                          int go)
4211 {
4212         struct wpa_supplicant *group_wpa_s;
4213
4214         if (!wpas_p2p_create_iface(wpa_s)) {
4215                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
4216                         "operations");
4217                 return wpa_s;
4218         }
4219
4220         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
4221                                          WPA_IF_P2P_CLIENT) < 0) {
4222                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
4223                 return NULL;
4224         }
4225         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
4226         if (group_wpa_s == NULL) {
4227                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
4228                         "interface");
4229                 wpas_p2p_remove_pending_group_interface(wpa_s);
4230                 return NULL;
4231         }
4232
4233         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
4234                 group_wpa_s->ifname);
4235         return group_wpa_s;
4236 }
4237
4238
4239 /**
4240  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
4241  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4242  * @persistent_group: Whether to create a persistent group
4243  * @freq: Frequency for the group or 0 to indicate no hardcoding
4244  * Returns: 0 on success, -1 on failure
4245  *
4246  * This function creates a new P2P group with the local end as the Group Owner,
4247  * i.e., without using Group Owner Negotiation.
4248  */
4249 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
4250                        int freq, int ht40)
4251 {
4252         struct p2p_go_neg_results params;
4253         unsigned int r;
4254
4255         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4256                 return -1;
4257
4258         /* Make sure we are not running find during connection establishment */
4259         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
4260         wpas_p2p_stop_find_oper(wpa_s);
4261
4262         if (freq == 2) {
4263                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4264                            "band");
4265                 if (wpa_s->best_24_freq > 0 &&
4266                     p2p_supported_freq(wpa_s->global->p2p,
4267                                        wpa_s->best_24_freq)) {
4268                         freq = wpa_s->best_24_freq;
4269                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4270                                    "channel: %d MHz", freq);
4271                 } else {
4272                         os_get_random((u8 *) &r, sizeof(r));
4273                         freq = 2412 + (r % 3) * 25;
4274                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4275                                    "channel: %d MHz", freq);
4276                 }
4277         }
4278
4279         if (freq == 5) {
4280                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4281                            "band");
4282                 if (wpa_s->best_5_freq > 0 &&
4283                     p2p_supported_freq(wpa_s->global->p2p,
4284                                        wpa_s->best_5_freq)) {
4285                         freq = wpa_s->best_5_freq;
4286                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4287                                    "channel: %d MHz", freq);
4288                 } else {
4289                         os_get_random((u8 *) &r, sizeof(r));
4290                         freq = 5180 + (r % 4) * 20;
4291                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
4292                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4293                                            "5 GHz channel for P2P group");
4294                                 return -1;
4295                         }
4296                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4297                                    "channel: %d MHz", freq);
4298                 }
4299         }
4300
4301         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
4302                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4303                            "(%u MHz) is not supported for P2P uses",
4304                            freq);
4305                 return -1;
4306         }
4307
4308         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, NULL))
4309                 return -1;
4310         if (params.freq &&
4311             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
4312                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
4313                            "(%u MHz) is not supported for P2P uses",
4314                            params.freq);
4315                 return -1;
4316         }
4317         p2p_go_params(wpa_s->global->p2p, &params);
4318         params.persistent_group = persistent_group;
4319
4320         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
4321         if (wpa_s == NULL)
4322                 return -1;
4323         wpas_start_wps_go(wpa_s, &params, 0);
4324
4325         return 0;
4326 }
4327
4328
4329 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
4330                                  struct wpa_ssid *params, int addr_allocated)
4331 {
4332         struct wpa_ssid *ssid;
4333
4334         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
4335         if (wpa_s == NULL)
4336                 return -1;
4337
4338         wpa_supplicant_ap_deinit(wpa_s);
4339
4340         ssid = wpa_config_add_network(wpa_s->conf);
4341         if (ssid == NULL)
4342                 return -1;
4343         wpa_config_set_network_defaults(ssid);
4344         ssid->temporary = 1;
4345         ssid->proto = WPA_PROTO_RSN;
4346         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
4347         ssid->group_cipher = WPA_CIPHER_CCMP;
4348         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
4349         ssid->ssid = os_malloc(params->ssid_len);
4350         if (ssid->ssid == NULL) {
4351                 wpa_config_remove_network(wpa_s->conf, ssid->id);
4352                 return -1;
4353         }
4354         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
4355         ssid->ssid_len = params->ssid_len;
4356         ssid->p2p_group = 1;
4357         ssid->export_keys = 1;
4358         if (params->psk_set) {
4359                 os_memcpy(ssid->psk, params->psk, 32);
4360                 ssid->psk_set = 1;
4361         }
4362         if (params->passphrase)
4363                 ssid->passphrase = os_strdup(params->passphrase);
4364
4365         wpa_supplicant_select_network(wpa_s, ssid);
4366
4367         wpa_s->show_group_started = 1;
4368
4369         return 0;
4370 }
4371
4372
4373 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
4374                                   struct wpa_ssid *ssid, int addr_allocated,
4375                                   int freq, int ht40,
4376                                   const struct p2p_channels *channels)
4377 {
4378         struct p2p_go_neg_results params;
4379         int go = 0;
4380
4381         if (ssid->disabled != 2 || ssid->ssid == NULL)
4382                 return -1;
4383
4384         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4385             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4386                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4387                            "already running");
4388                 return 0;
4389         }
4390
4391         /* Make sure we are not running find during connection establishment */
4392         wpas_p2p_stop_find_oper(wpa_s);
4393
4394         wpa_s->p2p_fallback_to_go_neg = 0;
4395
4396         if (ssid->mode == WPAS_MODE_INFRA)
4397                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4398
4399         if (ssid->mode != WPAS_MODE_P2P_GO)
4400                 return -1;
4401
4402         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, channels))
4403                 return -1;
4404
4405         params.role_go = 1;
4406         params.psk_set = ssid->psk_set;
4407         if (params.psk_set)
4408                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
4409         if (ssid->passphrase) {
4410                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4411                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
4412                                    "persistent group");
4413                         return -1;
4414                 }
4415                 os_strlcpy(params.passphrase, ssid->passphrase,
4416                            sizeof(params.passphrase));
4417         }
4418         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4419         params.ssid_len = ssid->ssid_len;
4420         params.persistent_group = 1;
4421
4422         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4423         if (wpa_s == NULL)
4424                 return -1;
4425
4426         wpas_start_wps_go(wpa_s, &params, 0);
4427
4428         return 0;
4429 }
4430
4431
4432 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4433                                struct wpabuf *proberesp_ies)
4434 {
4435         struct wpa_supplicant *wpa_s = ctx;
4436         if (wpa_s->ap_iface) {
4437                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4438                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4439                         wpabuf_free(beacon_ies);
4440                         wpabuf_free(proberesp_ies);
4441                         return;
4442                 }
4443                 if (beacon_ies) {
4444                         wpabuf_free(hapd->p2p_beacon_ie);
4445                         hapd->p2p_beacon_ie = beacon_ies;
4446                 }
4447                 wpabuf_free(hapd->p2p_probe_resp_ie);
4448                 hapd->p2p_probe_resp_ie = proberesp_ies;
4449         } else {
4450                 wpabuf_free(beacon_ies);
4451                 wpabuf_free(proberesp_ies);
4452         }
4453         wpa_supplicant_ap_update_beacon(wpa_s);
4454 }
4455
4456
4457 static void wpas_p2p_idle_update(void *ctx, int idle)
4458 {
4459         struct wpa_supplicant *wpa_s = ctx;
4460         if (!wpa_s->ap_iface)
4461                 return;
4462         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4463         if (idle)
4464                 wpas_p2p_set_group_idle_timeout(wpa_s);
4465         else
4466                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4467 }
4468
4469
4470 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4471                                        struct wpa_ssid *ssid)
4472 {
4473         struct p2p_group *group;
4474         struct p2p_group_config *cfg;
4475
4476         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4477                 return NULL;
4478         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4479                 return NULL;
4480
4481         cfg = os_zalloc(sizeof(*cfg));
4482         if (cfg == NULL)
4483                 return NULL;
4484
4485         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4486                 cfg->persistent_group = 2;
4487         else if (ssid->p2p_persistent_group)
4488                 cfg->persistent_group = 1;
4489         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4490         if (wpa_s->max_stations &&
4491             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4492                 cfg->max_clients = wpa_s->max_stations;
4493         else
4494                 cfg->max_clients = wpa_s->conf->max_num_sta;
4495         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4496         cfg->ssid_len = ssid->ssid_len;
4497         cfg->cb_ctx = wpa_s;
4498         cfg->ie_update = wpas_p2p_ie_update;
4499         cfg->idle_update = wpas_p2p_idle_update;
4500
4501         group = p2p_group_init(wpa_s->global->p2p, cfg);
4502         if (group == NULL)
4503                 os_free(cfg);
4504         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4505                 p2p_group_notif_formation_done(group);
4506         wpa_s->p2p_group = group;
4507         return group;
4508 }
4509
4510
4511 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4512                           int registrar)
4513 {
4514         struct wpa_ssid *ssid = wpa_s->current_ssid;
4515
4516         if (!wpa_s->p2p_in_provisioning) {
4517                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4518                            "provisioning not in progress");
4519                 return;
4520         }
4521
4522         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4523                 u8 go_dev_addr[ETH_ALEN];
4524                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4525                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4526                                           ssid->ssid_len);
4527                 /* Clear any stored provisioning info */
4528                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4529         }
4530
4531         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4532                              NULL);
4533         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4534                 /*
4535                  * Use a separate timeout for initial data connection to
4536                  * complete to allow the group to be removed automatically if
4537                  * something goes wrong in this step before the P2P group idle
4538                  * timeout mechanism is taken into use.
4539                  */
4540                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4541                                        wpas_p2p_group_formation_timeout,
4542                                        wpa_s->parent, NULL);
4543         }
4544         if (wpa_s->global->p2p)
4545                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4546         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4547                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4548         wpas_group_formation_completed(wpa_s, 1);
4549 }
4550
4551
4552 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4553                          struct wps_event_fail *fail)
4554 {
4555         if (!wpa_s->p2p_in_provisioning) {
4556                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4557                            "provisioning not in progress");
4558                 return;
4559         }
4560
4561         if (wpa_s->go_params) {
4562                 p2p_clear_provisioning_info(
4563                         wpa_s->global->p2p,
4564                         wpa_s->go_params->peer_device_addr);
4565         }
4566
4567         wpas_notify_p2p_wps_failed(wpa_s, fail);
4568 }
4569
4570
4571 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4572                        const char *config_method,
4573                        enum wpas_p2p_prov_disc_use use)
4574 {
4575         u16 config_methods;
4576
4577         wpa_s->p2p_fallback_to_go_neg = 0;
4578         wpa_s->pending_pd_use = NORMAL_PD;
4579         if (os_strncmp(config_method, "display", 7) == 0)
4580                 config_methods = WPS_CONFIG_DISPLAY;
4581         else if (os_strncmp(config_method, "keypad", 6) == 0)
4582                 config_methods = WPS_CONFIG_KEYPAD;
4583         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4584                  os_strncmp(config_method, "pushbutton", 10) == 0)
4585                 config_methods = WPS_CONFIG_PUSHBUTTON;
4586         else {
4587                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4588                 return -1;
4589         }
4590
4591         if (use == WPAS_P2P_PD_AUTO) {
4592                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4593                 wpa_s->pending_pd_config_methods = config_methods;
4594                 wpa_s->p2p_auto_pd = 1;
4595                 wpa_s->p2p_auto_join = 0;
4596                 wpa_s->pending_pd_before_join = 0;
4597                 wpa_s->auto_pd_scan_retry = 0;
4598                 wpas_p2p_stop_find(wpa_s);
4599                 wpa_s->p2p_join_scan_count = 0;
4600                 os_get_time(&wpa_s->p2p_auto_started);
4601                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4602                            wpa_s->p2p_auto_started.sec,
4603                            wpa_s->p2p_auto_started.usec);
4604                 wpas_p2p_join_scan(wpa_s, NULL);
4605                 return 0;
4606         }
4607
4608         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4609                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4610                                                  config_methods,
4611                                                  use == WPAS_P2P_PD_FOR_JOIN);
4612         }
4613
4614         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4615                 return -1;
4616
4617         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4618                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4619                                  0, 1);
4620 }
4621
4622
4623 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4624                               char *end)
4625 {
4626         return p2p_scan_result_text(ies, ies_len, buf, end);
4627 }
4628
4629
4630 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4631 {
4632         if (!offchannel_pending_action_tx(wpa_s))
4633                 return;
4634
4635         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4636                    "operation request");
4637         offchannel_clear_pending_action_tx(wpa_s);
4638 }
4639
4640
4641 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4642                   enum p2p_discovery_type type,
4643                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4644                   const u8 *dev_id, unsigned int search_delay)
4645 {
4646         wpas_p2p_clear_pending_action_tx(wpa_s);
4647         wpa_s->p2p_long_listen = 0;
4648
4649         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4650                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4651
4652         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4653             wpa_s->p2p_in_provisioning)
4654                 return -1;
4655
4656         wpa_supplicant_cancel_sched_scan(wpa_s);
4657
4658         return p2p_find(wpa_s->global->p2p, timeout, type,
4659                         num_req_dev_types, req_dev_types, dev_id,
4660                         search_delay);
4661 }
4662
4663
4664 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
4665 {
4666         wpas_p2p_clear_pending_action_tx(wpa_s);
4667         wpa_s->p2p_long_listen = 0;
4668         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4669         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4670         wpa_s->global->p2p_cb_on_scan_complete = 0;
4671
4672         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4673                 wpa_drv_p2p_stop_find(wpa_s);
4674                 return 1;
4675         }
4676
4677         if (wpa_s->global->p2p)
4678                 p2p_stop_find(wpa_s->global->p2p);
4679
4680         return 0;
4681 }
4682
4683
4684 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4685 {
4686         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
4687                 return;
4688         wpas_p2p_remove_pending_group_interface(wpa_s);
4689 }
4690
4691
4692 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4693 {
4694         struct wpa_supplicant *wpa_s = eloop_ctx;
4695         wpa_s->p2p_long_listen = 0;
4696 }
4697
4698
4699 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4700 {
4701         int res;
4702
4703         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4704                 return -1;
4705
4706         wpa_supplicant_cancel_sched_scan(wpa_s);
4707         wpas_p2p_clear_pending_action_tx(wpa_s);
4708
4709         if (timeout == 0) {
4710                 /*
4711                  * This is a request for unlimited Listen state. However, at
4712                  * least for now, this is mapped to a Listen state for one
4713                  * hour.
4714                  */
4715                 timeout = 3600;
4716         }
4717         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4718         wpa_s->p2p_long_listen = 0;
4719
4720         /*
4721          * Stop previous find/listen operation to avoid trying to request a new
4722          * remain-on-channel operation while the driver is still running the
4723          * previous one.
4724          */
4725         if (wpa_s->global->p2p)
4726                 p2p_stop_find(wpa_s->global->p2p);
4727
4728         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4729         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4730                 wpa_s->p2p_long_listen = timeout * 1000;
4731                 eloop_register_timeout(timeout, 0,
4732                                        wpas_p2p_long_listen_timeout,
4733                                        wpa_s, NULL);
4734         }
4735
4736         return res;
4737 }
4738
4739
4740 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4741                           u8 *buf, size_t len, int p2p_group)
4742 {
4743         struct wpabuf *p2p_ie;
4744         int ret;
4745
4746         if (wpa_s->global->p2p_disabled)
4747                 return -1;
4748         if (wpa_s->global->p2p == NULL)
4749                 return -1;
4750         if (bss == NULL)
4751                 return -1;
4752
4753         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4754         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4755                                p2p_group, p2p_ie);
4756         wpabuf_free(p2p_ie);
4757
4758         return ret;
4759 }
4760
4761
4762 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4763                           const u8 *dst, const u8 *bssid,
4764                           const u8 *ie, size_t ie_len, int ssi_signal)
4765 {
4766         if (wpa_s->global->p2p_disabled)
4767                 return 0;
4768         if (wpa_s->global->p2p == NULL)
4769                 return 0;
4770
4771         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4772                                  ie, ie_len)) {
4773         case P2P_PREQ_NOT_P2P:
4774                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4775                                  ssi_signal);
4776                 /* fall through */
4777         case P2P_PREQ_MALFORMED:
4778         case P2P_PREQ_NOT_LISTEN:
4779         case P2P_PREQ_NOT_PROCESSED:
4780         default: /* make gcc happy */
4781                 return 0;
4782         case P2P_PREQ_PROCESSED:
4783                 return 1;
4784         }
4785 }
4786
4787
4788 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4789                         const u8 *sa, const u8 *bssid,
4790                         u8 category, const u8 *data, size_t len, int freq)
4791 {
4792         if (wpa_s->global->p2p_disabled)
4793                 return;
4794         if (wpa_s->global->p2p == NULL)
4795                 return;
4796
4797         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4798                       freq);
4799 }
4800
4801
4802 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4803 {
4804         if (wpa_s->global->p2p_disabled)
4805                 return;
4806         if (wpa_s->global->p2p == NULL)
4807                 return;
4808
4809         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4810 }
4811
4812
4813 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4814 {
4815         p2p_group_deinit(wpa_s->p2p_group);
4816         wpa_s->p2p_group = NULL;
4817
4818         wpa_s->ap_configured_cb = NULL;
4819         wpa_s->ap_configured_cb_ctx = NULL;
4820         wpa_s->ap_configured_cb_data = NULL;
4821         wpa_s->connect_without_scan = NULL;
4822 }
4823
4824
4825 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4826 {
4827         wpa_s->p2p_long_listen = 0;
4828
4829         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4830                 return wpa_drv_p2p_reject(wpa_s, addr);
4831
4832         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4833                 return -1;
4834
4835         return p2p_reject(wpa_s->global->p2p, addr);
4836 }
4837
4838
4839 /* Invite to reinvoke a persistent group */
4840 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4841                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4842                     int ht40, int pref_freq)
4843 {
4844         enum p2p_invite_role role;
4845         u8 *bssid = NULL, bssid_buf[ETH_ALEN];
4846         int force_freq = 0, oper_freq = 0;
4847         int res;
4848
4849         wpa_s->global->p2p_invite_group = NULL;
4850         if (peer_addr)
4851                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4852         else
4853                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
4854
4855         wpa_s->p2p_persistent_go_freq = freq;
4856         wpa_s->p2p_go_ht40 = !!ht40;
4857         if (ssid->mode == WPAS_MODE_P2P_GO) {
4858                 role = P2P_INVITE_ROLE_GO;
4859                 if (peer_addr == NULL) {
4860                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4861                                    "address in invitation command");
4862                         return -1;
4863                 }
4864                 if (wpas_p2p_create_iface(wpa_s)) {
4865                         if (wpas_p2p_add_group_interface(wpa_s,
4866                                                          WPA_IF_P2P_GO) < 0) {
4867                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4868                                            "allocate a new interface for the "
4869                                            "group");
4870                                 return -1;
4871                         }
4872                         bssid = wpa_s->pending_interface_addr;
4873                 } else
4874                         bssid = wpa_s->own_addr;
4875         } else {
4876                 role = P2P_INVITE_ROLE_CLIENT;
4877                 peer_addr = ssid->bssid;
4878         }
4879         wpa_s->pending_invite_ssid_id = ssid->id;
4880
4881         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 &&
4882             wpa_s->assoc_freq) {
4883                 oper_freq = wpa_s->assoc_freq;
4884                 if (bssid == NULL)
4885                         bssid = bssid_buf;
4886         } else {
4887                 oper_freq = wpa_drv_shared_freq(wpa_s);
4888                 if (oper_freq < 0)
4889                         oper_freq = 0;
4890         }
4891
4892         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4893                                    &oper_freq);
4894         if (res)
4895                 return res;
4896
4897         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4898                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4899                                           ssid->ssid, ssid->ssid_len,
4900                                           go_dev_addr, 1);
4901
4902         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4903                 return -1;
4904
4905         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4906                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
4907                           1, pref_freq);
4908 }
4909
4910
4911 /* Invite to join an active group */
4912 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4913                           const u8 *peer_addr, const u8 *go_dev_addr)
4914 {
4915         struct wpa_global *global = wpa_s->global;
4916         enum p2p_invite_role role;
4917         u8 *bssid = NULL, bssid_buf[ETH_ALEN];
4918         struct wpa_ssid *ssid;
4919         int persistent;
4920         int force_freq = 0, oper_freq = 0, pref_freq = 0;
4921         int res;
4922
4923         wpa_s->p2p_persistent_go_freq = 0;
4924         wpa_s->p2p_go_ht40 = 0;
4925
4926         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4927                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4928                         break;
4929         }
4930         if (wpa_s == NULL) {
4931                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4932                 return -1;
4933         }
4934
4935         ssid = wpa_s->current_ssid;
4936         if (ssid == NULL) {
4937                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4938                            "invitation");
4939                 return -1;
4940         }
4941
4942         wpa_s->global->p2p_invite_group = wpa_s;
4943         persistent = ssid->p2p_persistent_group &&
4944                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4945                                         ssid->ssid, ssid->ssid_len);
4946
4947         if (ssid->mode == WPAS_MODE_P2P_GO) {
4948                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4949                 bssid = wpa_s->own_addr;
4950                 if (go_dev_addr == NULL)
4951                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4952         } else {
4953                 role = P2P_INVITE_ROLE_CLIENT;
4954                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4955                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4956                                    "invite to current group");
4957                         return -1;
4958                 }
4959                 bssid = wpa_s->bssid;
4960                 if (go_dev_addr == NULL &&
4961                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4962                         go_dev_addr = wpa_s->go_dev_addr;
4963         }
4964         wpa_s->parent->pending_invite_ssid_id = -1;
4965
4966         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4967                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4968                                           ssid->ssid, ssid->ssid_len,
4969                                           go_dev_addr, persistent);
4970
4971         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4972                 return -1;
4973
4974         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 &&
4975             wpa_s->assoc_freq) {
4976                 oper_freq = wpa_s->assoc_freq;
4977                 if (bssid == NULL)
4978                         bssid = bssid_buf;
4979         } else {
4980                 oper_freq = wpa_drv_shared_freq(wpa_s);
4981                 if (oper_freq < 0)
4982                         oper_freq = 0;
4983         }
4984
4985         res = wpas_p2p_setup_freqs(wpa_s, 0, &force_freq, &pref_freq,
4986                                    &oper_freq);
4987         if (res)
4988                 return res;
4989         wpas_p2p_set_own_freq_preference(wpa_s, oper_freq);
4990
4991         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4992                           ssid->ssid, ssid->ssid_len, force_freq,
4993                           go_dev_addr, persistent, pref_freq);
4994 }
4995
4996
4997 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4998 {
4999         struct wpa_ssid *ssid = wpa_s->current_ssid;
5000         const char *ssid_txt;
5001         u8 go_dev_addr[ETH_ALEN];
5002         int network_id = -1;
5003         int persistent;
5004         int freq;
5005
5006         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5007                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5008                                      wpa_s->parent, NULL);
5009         }
5010
5011         if (!wpa_s->show_group_started || !ssid)
5012                 goto done;
5013
5014         wpa_s->show_group_started = 0;
5015
5016         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5017         os_memset(go_dev_addr, 0, ETH_ALEN);
5018         if (ssid->bssid_set)
5019                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5020         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5021                                                ssid->ssid_len);
5022         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5023
5024         if (wpa_s->global->p2p_group_formation == wpa_s)
5025                 wpa_s->global->p2p_group_formation = NULL;
5026
5027         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5028                 (int) wpa_s->assoc_freq;
5029         if (ssid->passphrase == NULL && ssid->psk_set) {
5030                 char psk[65];
5031                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5032                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5033                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
5034                         MACSTR "%s",
5035                         wpa_s->ifname, ssid_txt, freq, psk,
5036                         MAC2STR(go_dev_addr),
5037                         persistent ? " [PERSISTENT]" : "");
5038         } else {
5039                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5040                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
5041                         "go_dev_addr=" MACSTR "%s",
5042                         wpa_s->ifname, ssid_txt, freq,
5043                         ssid->passphrase ? ssid->passphrase : "",
5044                         MAC2STR(go_dev_addr),
5045                         persistent ? " [PERSISTENT]" : "");
5046         }
5047
5048         if (persistent)
5049                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5050                                                              ssid, go_dev_addr);
5051         if (network_id < 0)
5052                 network_id = ssid->id;
5053         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5054
5055 done:
5056         wpas_p2p_continue_after_scan(wpa_s);
5057 }
5058
5059
5060 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5061                           u32 interval1, u32 duration2, u32 interval2)
5062 {
5063         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5064                 return -1;
5065         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5066                 return -1;
5067
5068         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5069             wpa_s->current_ssid == NULL ||
5070             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5071                 return -1;
5072
5073         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5074                                 wpa_s->own_addr, wpa_s->assoc_freq,
5075                                 duration1, interval1, duration2, interval2);
5076 }
5077
5078
5079 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5080                         unsigned int interval)
5081 {
5082         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5083                 return -1;
5084
5085         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5086                 return -1;
5087
5088         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5089 }
5090
5091
5092 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5093 {
5094         if (wpa_s->current_ssid == NULL) {
5095                 /*
5096                  * current_ssid can be cleared when P2P client interface gets
5097                  * disconnected, so assume this interface was used as P2P
5098                  * client.
5099                  */
5100                 return 1;
5101         }
5102         return wpa_s->current_ssid->p2p_group &&
5103                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5104 }
5105
5106
5107 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
5108 {
5109         struct wpa_supplicant *wpa_s = eloop_ctx;
5110
5111         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
5112                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
5113                            "disabled");
5114                 return;
5115         }
5116
5117         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
5118                    "group");
5119         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
5120 }
5121
5122
5123 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
5124 {
5125         int timeout;
5126
5127         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5128                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5129
5130         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5131                 return;
5132
5133         timeout = wpa_s->conf->p2p_group_idle;
5134         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
5135             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
5136             timeout = P2P_MAX_CLIENT_IDLE;
5137
5138         if (timeout == 0)
5139                 return;
5140
5141         if (timeout < 0) {
5142                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
5143                         timeout = 0; /* special client mode no-timeout */
5144                 else
5145                         return;
5146         }
5147
5148         if (wpa_s->p2p_in_provisioning) {
5149                 /*
5150                  * Use the normal group formation timeout during the
5151                  * provisioning phase to avoid terminating this process too
5152                  * early due to group idle timeout.
5153                  */
5154                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5155                            "during provisioning");
5156                 return;
5157         }
5158 #ifndef ANDROID_P2P
5159         if (wpa_s->show_group_started) {
5160                 /*
5161                  * Use the normal group formation timeout between the end of
5162                  * the provisioning phase and completion of 4-way handshake to
5163                  * avoid terminating this process too early due to group idle
5164                  * timeout.
5165                  */
5166                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
5167                            "while waiting for initial 4-way handshake to "
5168                            "complete");
5169                 return;
5170         }
5171 #endif
5172
5173         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
5174                    timeout);
5175         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
5176                                wpa_s, NULL);
5177 }
5178
5179
5180 /* Returns 1 if the interface was removed */
5181 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5182                           u16 reason_code, const u8 *ie, size_t ie_len,
5183                           int locally_generated)
5184 {
5185         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5186                 return 0;
5187         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5188                 return 0;
5189
5190         if (!locally_generated)
5191                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
5192                                  ie_len);
5193
5194         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
5195             wpa_s->current_ssid &&
5196             wpa_s->current_ssid->p2p_group &&
5197             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
5198                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
5199                            "session is ending");
5200                 if (wpas_p2p_group_delete(wpa_s,
5201                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
5202                     > 0)
5203                         return 1;
5204         }
5205
5206         return 0;
5207 }
5208
5209
5210 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
5211                              u16 reason_code, const u8 *ie, size_t ie_len,
5212                              int locally_generated)
5213 {
5214         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5215                 return;
5216         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5217                 return;
5218
5219         if (!locally_generated)
5220                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
5221                                    ie_len);
5222 }
5223
5224
5225 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
5226 {
5227         struct p2p_data *p2p = wpa_s->global->p2p;
5228
5229         if (p2p == NULL)
5230                 return;
5231
5232         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
5233                 return;
5234
5235         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
5236                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
5237
5238         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
5239                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
5240
5241         if (wpa_s->wps &&
5242             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
5243                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
5244
5245         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
5246                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
5247
5248         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
5249                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
5250                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
5251                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
5252                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
5253         }
5254
5255         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
5256                 p2p_set_sec_dev_types(p2p,
5257                                       (void *) wpa_s->conf->sec_device_type,
5258                                       wpa_s->conf->num_sec_device_types);
5259
5260         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
5261                 int i;
5262                 p2p_remove_wps_vendor_extensions(p2p);
5263                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
5264                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
5265                                 continue;
5266                         p2p_add_wps_vendor_extension(
5267                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
5268                 }
5269         }
5270
5271         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
5272             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
5273                 char country[3];
5274                 country[0] = wpa_s->conf->country[0];
5275                 country[1] = wpa_s->conf->country[1];
5276                 country[2] = 0x04;
5277                 p2p_set_country(p2p, country);
5278         }
5279
5280         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
5281                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
5282                                      wpa_s->conf->p2p_ssid_postfix ?
5283                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
5284                                      0);
5285         }
5286
5287         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
5288                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
5289
5290         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
5291                 u8 reg_class, channel;
5292                 int ret;
5293                 unsigned int r;
5294                 if (wpa_s->conf->p2p_listen_reg_class &&
5295                     wpa_s->conf->p2p_listen_channel) {
5296                         reg_class = wpa_s->conf->p2p_listen_reg_class;
5297                         channel = wpa_s->conf->p2p_listen_channel;
5298                 } else {
5299                         reg_class = 81;
5300                         /*
5301                          * Pick one of the social channels randomly as the
5302                          * listen channel.
5303                          */
5304                         os_get_random((u8 *) &r, sizeof(r));
5305                         channel = 1 + (r % 3) * 5;
5306                 }
5307                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
5308                 if (ret)
5309                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
5310                                    "failed: %d", ret);
5311         }
5312         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
5313                 u8 op_reg_class, op_channel, cfg_op_channel;
5314                 int ret = 0;
5315                 unsigned int r;
5316                 if (wpa_s->conf->p2p_oper_reg_class &&
5317                     wpa_s->conf->p2p_oper_channel) {
5318                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
5319                         op_channel = wpa_s->conf->p2p_oper_channel;
5320                         cfg_op_channel = 1;
5321                 } else {
5322                         op_reg_class = 81;
5323                         /*
5324                          * Use random operation channel from (1, 6, 11)
5325                          *if no other preference is indicated.
5326                          */
5327                         os_get_random((u8 *) &r, sizeof(r));
5328                         op_channel = 1 + (r % 3) * 5;
5329                         cfg_op_channel = 0;
5330                 }
5331                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
5332                                            cfg_op_channel);
5333                 if (ret)
5334                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
5335                                    "failed: %d", ret);
5336         }
5337
5338         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
5339                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
5340                                       wpa_s->conf->p2p_pref_chan) < 0) {
5341                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
5342                                    "update failed");
5343                 }
5344         }
5345 }
5346
5347
5348 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
5349                      int duration)
5350 {
5351         if (!wpa_s->ap_iface)
5352                 return -1;
5353         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
5354                                    duration);
5355 }
5356
5357
5358 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
5359 {
5360         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5361                 return -1;
5362         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5363                 return -1;
5364
5365         wpa_s->global->cross_connection = enabled;
5366         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
5367
5368         if (!enabled) {
5369                 struct wpa_supplicant *iface;
5370
5371                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
5372                 {
5373                         if (iface->cross_connect_enabled == 0)
5374                                 continue;
5375
5376                         iface->cross_connect_enabled = 0;
5377                         iface->cross_connect_in_use = 0;
5378                         wpa_msg(iface->parent, MSG_INFO,
5379                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5380                                 iface->ifname, iface->cross_connect_uplink);
5381                 }
5382         }
5383
5384         return 0;
5385 }
5386
5387
5388 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
5389 {
5390         struct wpa_supplicant *iface;
5391
5392         if (!uplink->global->cross_connection)
5393                 return;
5394
5395         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5396                 if (!iface->cross_connect_enabled)
5397                         continue;
5398                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5399                     0)
5400                         continue;
5401                 if (iface->ap_iface == NULL)
5402                         continue;
5403                 if (iface->cross_connect_in_use)
5404                         continue;
5405
5406                 iface->cross_connect_in_use = 1;
5407                 wpa_msg(iface->parent, MSG_INFO,
5408                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5409                         iface->ifname, iface->cross_connect_uplink);
5410         }
5411 }
5412
5413
5414 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5415 {
5416         struct wpa_supplicant *iface;
5417
5418         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5419                 if (!iface->cross_connect_enabled)
5420                         continue;
5421                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5422                     0)
5423                         continue;
5424                 if (!iface->cross_connect_in_use)
5425                         continue;
5426
5427                 wpa_msg(iface->parent, MSG_INFO,
5428                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5429                         iface->ifname, iface->cross_connect_uplink);
5430                 iface->cross_connect_in_use = 0;
5431         }
5432 }
5433
5434
5435 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5436 {
5437         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5438             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5439             wpa_s->cross_connect_disallowed)
5440                 wpas_p2p_disable_cross_connect(wpa_s);
5441         else
5442                 wpas_p2p_enable_cross_connect(wpa_s);
5443         if (!wpa_s->ap_iface &&
5444             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5445                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5446 }
5447
5448
5449 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5450 {
5451         wpas_p2p_disable_cross_connect(wpa_s);
5452         if (!wpa_s->ap_iface &&
5453             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5454                                          wpa_s, NULL))
5455                 wpas_p2p_set_group_idle_timeout(wpa_s);
5456 }
5457
5458
5459 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5460 {
5461         struct wpa_supplicant *iface;
5462
5463         if (!wpa_s->global->cross_connection)
5464                 return;
5465
5466         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5467                 if (iface == wpa_s)
5468                         continue;
5469                 if (iface->drv_flags &
5470                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5471                         continue;
5472                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5473                         continue;
5474
5475                 wpa_s->cross_connect_enabled = 1;
5476                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5477                            sizeof(wpa_s->cross_connect_uplink));
5478                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5479                            "%s to %s whenever uplink is available",
5480                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5481
5482                 if (iface->ap_iface || iface->current_ssid == NULL ||
5483                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5484                     iface->cross_connect_disallowed ||
5485                     iface->wpa_state != WPA_COMPLETED)
5486                         break;
5487
5488                 wpa_s->cross_connect_in_use = 1;
5489                 wpa_msg(wpa_s->parent, MSG_INFO,
5490                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5491                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5492                 break;
5493         }
5494 }
5495
5496
5497 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5498 {
5499         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5500             !wpa_s->p2p_in_provisioning)
5501                 return 0; /* not P2P client operation */
5502
5503         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5504                    "session overlap");
5505         if (wpa_s != wpa_s->parent)
5506                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5507
5508         if (wpa_s->global->p2p)
5509                 p2p_group_formation_failed(wpa_s->global->p2p);
5510
5511         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5512                              wpa_s->parent, NULL);
5513
5514         wpas_group_formation_completed(wpa_s, 0);
5515         return 1;
5516 }
5517
5518
5519 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5520 {
5521         struct p2p_channels chan;
5522
5523         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5524                 return;
5525
5526         os_memset(&chan, 0, sizeof(chan));
5527         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5528                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5529                            "channel list");
5530                 return;
5531         }
5532
5533         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5534 }
5535
5536
5537 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
5538                                      struct wpa_scan_results *scan_res)
5539 {
5540         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5541 }
5542
5543
5544 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5545 {
5546         struct wpa_global *global = wpa_s->global;
5547         int found = 0;
5548         const u8 *peer;
5549
5550         if (global->p2p == NULL)
5551                 return -1;
5552
5553         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5554
5555         if (wpa_s->pending_interface_name[0] &&
5556             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5557                 found = 1;
5558
5559         peer = p2p_get_go_neg_peer(global->p2p);
5560         if (peer) {
5561                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5562                            MACSTR, MAC2STR(peer));
5563                 p2p_unauthorize(global->p2p, peer);
5564                 found = 1;
5565         }
5566
5567         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
5568                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
5569                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
5570                 found = 1;
5571         }
5572
5573         if (wpa_s->pending_pd_before_join) {
5574                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
5575                 wpa_s->pending_pd_before_join = 0;
5576                 found = 1;
5577         }
5578
5579         wpas_p2p_stop_find(wpa_s);
5580
5581         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5582                 if (wpa_s == global->p2p_group_formation &&
5583                     (wpa_s->p2p_in_provisioning ||
5584                      wpa_s->parent->pending_interface_type ==
5585                      WPA_IF_P2P_CLIENT)) {
5586                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5587                                    "formation found - cancelling",
5588                                    wpa_s->ifname);
5589                         found = 1;
5590                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5591                                              wpa_s->parent, NULL);
5592                         if (wpa_s->p2p_in_provisioning) {
5593                                 wpas_group_formation_completed(wpa_s, 0);
5594                                 break;
5595                         }
5596                         wpas_p2p_group_delete(wpa_s,
5597                                               P2P_GROUP_REMOVAL_REQUESTED);
5598                         break;
5599                 }
5600         }
5601
5602         if (!found) {
5603                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5604                 return -1;
5605         }
5606
5607         return 0;
5608 }
5609
5610
5611 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5612 {
5613         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5614                 return;
5615
5616         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5617                    "being available anymore");
5618         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5619 }
5620
5621
5622 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5623                                    int freq_24, int freq_5, int freq_overall)
5624 {
5625         struct p2p_data *p2p = wpa_s->global->p2p;
5626         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5627                 return;
5628         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5629 }
5630
5631
5632 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5633 {
5634         u8 peer[ETH_ALEN];
5635         struct p2p_data *p2p = wpa_s->global->p2p;
5636
5637         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5638                 return -1;
5639
5640         if (hwaddr_aton(addr, peer))
5641                 return -1;
5642
5643         return p2p_unauthorize(p2p, peer);
5644 }
5645
5646
5647 /**
5648  * wpas_p2p_disconnect - Disconnect from a P2P Group
5649  * @wpa_s: Pointer to wpa_supplicant data
5650  * Returns: 0 on success, -1 on failure
5651  *
5652  * This can be used to disconnect from a group in which the local end is a P2P
5653  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5654  * virtual network interface was created for this group, that interface will be
5655  * removed. Otherwise, only the configured P2P group network will be removed
5656  * from the interface.
5657  */
5658 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5659 {
5660
5661         if (wpa_s == NULL)
5662                 return -1;
5663
5664         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5665                 -1 : 0;
5666 }
5667
5668
5669 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5670 {
5671         int ret;
5672
5673         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5674                 return 0;
5675
5676         ret = p2p_in_progress(wpa_s->global->p2p);
5677         if (ret == 0) {
5678                 /*
5679                  * Check whether there is an ongoing WPS provisioning step (or
5680                  * other parts of group formation) on another interface since
5681                  * p2p_in_progress() does not report this to avoid issues for
5682                  * scans during such provisioning step.
5683                  */
5684                 if (wpa_s->global->p2p_group_formation &&
5685                     wpa_s->global->p2p_group_formation != wpa_s) {
5686                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
5687                                 "in group formation",
5688                                 wpa_s->global->p2p_group_formation->ifname);
5689                         ret = 1;
5690                 }
5691         }
5692
5693         return ret;
5694 }
5695
5696
5697 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5698                               struct wpa_ssid *ssid)
5699 {
5700         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5701             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5702                                  wpa_s->parent, NULL) > 0) {
5703                 /**
5704                  * Remove the network by scheduling the group formation
5705                  * timeout to happen immediately. The teardown code
5706                  * needs to be scheduled to run asynch later so that we
5707                  * don't delete data from under ourselves unexpectedly.
5708                  * Calling wpas_p2p_group_formation_timeout directly
5709                  * causes a series of crashes in WPS failure scenarios.
5710                  */
5711                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5712                            "P2P group network getting removed");
5713                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5714                                        wpa_s->parent, NULL);
5715         }
5716 }
5717
5718
5719 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5720                                           const u8 *addr, const u8 *ssid,
5721                                           size_t ssid_len)
5722 {
5723         struct wpa_ssid *s;
5724         size_t i;
5725
5726         for (s = wpa_s->conf->ssid; s; s = s->next) {
5727                 if (s->disabled != 2)
5728                         continue;
5729                 if (ssid &&
5730                     (ssid_len != s->ssid_len ||
5731                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5732                         continue;
5733                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5734                         return s; /* peer is GO in the persistent group */
5735                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5736                         continue;
5737                 for (i = 0; i < s->num_p2p_clients; i++) {
5738                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5739                                       addr, ETH_ALEN) == 0)
5740                                 return s; /* peer is P2P client in persistent
5741                                            * group */
5742                 }
5743         }
5744
5745         return NULL;
5746 }
5747
5748
5749 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5750                                        const u8 *addr)
5751 {
5752         if (addr == NULL)
5753                 return;
5754         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5755 }
5756
5757
5758 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5759                                         int group_added)
5760 {
5761         struct wpa_supplicant *group = wpa_s;
5762         if (wpa_s->global->p2p_group_formation)
5763                 group = wpa_s->global->p2p_group_formation;
5764         wpa_s = wpa_s->parent;
5765         offchannel_send_action_done(wpa_s);
5766         if (group_added)
5767                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5768         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5769         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5770                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5771                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5772                          wpa_s->p2p_persistent_id,
5773                          wpa_s->p2p_pd_before_go_neg,
5774                          wpa_s->p2p_go_ht40);
5775 }
5776
5777
5778 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5779 {
5780         if (!wpa_s->p2p_fallback_to_go_neg ||
5781             wpa_s->p2p_in_provisioning <= 5)
5782                 return 0;
5783
5784         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5785                 return 0; /* peer operating as a GO */
5786
5787         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5788                 "fallback to GO Negotiation");
5789         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5790
5791         return 1;
5792 }
5793
5794
5795 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5796 {
5797         const char *rn, *rn2;
5798         struct wpa_supplicant *ifs;
5799
5800         if (wpa_s->wpa_state > WPA_SCANNING) {
5801                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5802                         "concurrent operation",
5803                         P2P_CONCURRENT_SEARCH_DELAY);
5804                 return P2P_CONCURRENT_SEARCH_DELAY;
5805         }
5806
5807         if (!wpa_s->driver->get_radio_name)
5808                 return 0;
5809         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5810         if (rn == NULL || rn[0] == '\0')
5811                 return 0;
5812
5813         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5814                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5815                         continue;
5816
5817                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5818                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5819                         continue;
5820                 if (ifs->wpa_state > WPA_SCANNING) {
5821                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5822                                 "delay due to concurrent operation on "
5823                                 "interface %s",
5824                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5825                         return P2P_CONCURRENT_SEARCH_DELAY;
5826                 }
5827         }
5828
5829         return 0;
5830 }
5831
5832
5833 void wpas_p2p_continue_after_scan(struct wpa_supplicant *wpa_s)
5834 {
5835         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Station mode scan operation not "
5836                 "pending anymore (sta_scan_pending=%d "
5837                 "p2p_cb_on_scan_complete=%d)", wpa_s->sta_scan_pending,
5838                 wpa_s->global->p2p_cb_on_scan_complete);
5839         wpa_s->sta_scan_pending = 0;
5840
5841         if (!wpa_s->global->p2p_cb_on_scan_complete)
5842                 return;
5843         wpa_s->global->p2p_cb_on_scan_complete = 0;
5844
5845         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5846                 return;
5847
5848         if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
5849                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
5850                         "continued after successful connection");
5851                 p2p_increase_search_delay(wpa_s->global->p2p,
5852                                           wpas_p2p_search_delay(wpa_s));
5853         }
5854 }
5855
5856 #ifdef ANDROID_P2P
5857 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
5858         struct wpa_ssid *ssid)
5859 {
5860         struct wpa_supplicant *iface = NULL;
5861         struct p2p_data *p2p = wpa_s->global->p2p;
5862
5863         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5864                 if ((iface->current_ssid) &&
5865                     (iface->current_ssid->frequency != freq) &&
5866                     ((iface->p2p_group_interface) ||
5867                      (iface->current_ssid->p2p_group))) {
5868
5869                         if ((iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO)  ||
5870                             (iface->current_ssid->mode == WPAS_MODE_P2P_GO)) {
5871                                 /* Try to see whether we can move the GO. If it
5872                                  * is not possible, remove the GO interface
5873                                  */
5874                                 if (wpa_drv_switch_channel(iface, freq) == 0) {
5875                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5876                                         iface->current_ssid->frequency = freq;
5877                                         continue;
5878                                 }
5879                         }
5880
5881                         /* If GO cannot be moved or if the conflicting interface is a
5882                          * P2P Client, remove the interface depending up on the connection
5883                          * priority */
5884                         if(!wpas_is_p2p_prioritized(iface)) {
5885                                 /* STA connection has priority over existing
5886                                  * P2P connection. So remove the interface */
5887                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5888                                                 "concurrent mode frequency conflict");
5889                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5890                                 /* If connection in progress is p2p connection, do not proceed for the connection */
5891                                 if (wpa_s == iface)
5892                                         return -1;
5893                                 else
5894                                         /* If connection in progress is STA connection, proceed for the connection */
5895                                         return 0;
5896                         } else {
5897                                 /* P2p connection has priority, disable the STA network*/
5898                                 wpa_supplicant_disable_network(wpa_s->global->ifaces, ssid);
5899                                 wpa_msg(wpa_s->global->ifaces, MSG_INFO, WPA_EVENT_FREQ_CONFLICT
5900                                         " id=%d", ssid->id);
5901                                 os_memset(wpa_s->global->ifaces->pending_bssid, 0, ETH_ALEN);
5902                                 if (wpa_s == iface) {
5903                                         /* p2p connection is in progress, continue connecting...*/
5904                                         return 0;
5905                                 }
5906                                 else {
5907                                         /* STA connection is in progress, do not allow to continue */
5908                                         return -1;
5909                                 }
5910                         }
5911                 }
5912         }
5913         return 0;
5914 }
5915 #endif