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 void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  93                                             void *timeout_ctx);
  94 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  95 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  96 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  97 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  98 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  99                                         int group_added);
 100
 101
 102 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 103                                       struct wpa_scan_results *scan_res)
 104 {
 105         size_t i;
 106
 107         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 108                 return;
 109
 110         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 111                    (int) scan_res->num);
 112
 113         for (i = 0; i < scan_res->num; i++) {
 114                 struct wpa_scan_res *bss = scan_res->res[i];
 115                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 116                                          bss->freq, bss->level,
 117                                          (const u8 *) (bss + 1),
 118                                          bss->ie_len) > 0)
 119                         break;
 120         }
 121
 122         p2p_scan_res_handled(wpa_s->global->p2p);
 123 }
 124
 125
 126 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 127                          unsigned int num_req_dev_types,
 128                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 129 {
 130         struct wpa_supplicant *wpa_s = ctx;
 131         struct wpa_supplicant *ifs;
 132         struct wpa_driver_scan_params params;
 133         int ret;
 134         struct wpabuf *wps_ie, *ies;
 135         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 136         size_t ielen;
 137
 138         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 139                 return -1;
 140
 141         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 142                 if (ifs->sta_scan_pending &&
 143                     wpas_p2p_in_progress(wpa_s) == 2) {
 144                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 145                                    "pending station mode scan to be "
 146                                    "completed on interface %s", ifs->ifname);
 147                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 148                         wpa_supplicant_req_scan(ifs, 0, 0);
 149                         return 1;
 150                 }
 151         }
 152
 153         os_memset(&params, 0, sizeof(params));
 154
 155         /* P2P Wildcard SSID */
 156         params.num_ssids = 1;
 157         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 158         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 159
 160         wpa_s->wps->dev.p2p = 1;
 161         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 162                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 163                                         num_req_dev_types, req_dev_types);
 164         if (wps_ie == NULL)
 165                 return -1;
 166
 167         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 168         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 169         if (ies == NULL) {
 170                 wpabuf_free(wps_ie);
 171                 return -1;
 172         }
 173         wpabuf_put_buf(ies, wps_ie);
 174         wpabuf_free(wps_ie);
 175
 176         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 177
 178         params.p2p_probe = 1;
 179         params.extra_ies = wpabuf_head(ies);
 180         params.extra_ies_len = wpabuf_len(ies);
 181
 182         switch (type) {
 183         case P2P_SCAN_SOCIAL:
 184                 params.freqs = social_channels;
 185                 break;
 186         case P2P_SCAN_FULL:
 187                 break;
 188         case P2P_SCAN_SPECIFIC:
 189                 social_channels[0] = freq;
 190                 social_channels[1] = 0;
 191                 params.freqs = social_channels;
 192                 break;
 193         case P2P_SCAN_SOCIAL_PLUS_ONE:
 194                 social_channels[3] = freq;
 195                 params.freqs = social_channels;
 196                 break;
 197         }
 198
 199         ret = wpa_drv_scan(wpa_s, &params);
 200
 201         wpabuf_free(ies);
 202
 203         if (ret) {
 204                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 205                         if (ifs->scanning ||
 206                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 207                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 208                                 ret = 1;
 209                                 break;
 210                         }
 211                 }
 212         } else
 213                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 214
 215         return ret;
 216 }
 217
 218
 219 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 220 {
 221         switch (p2p_group_interface) {
 222         case P2P_GROUP_INTERFACE_PENDING:
 223                 return WPA_IF_P2P_GROUP;
 224         case P2P_GROUP_INTERFACE_GO:
 225                 return WPA_IF_P2P_GO;
 226         case P2P_GROUP_INTERFACE_CLIENT:
 227                 return WPA_IF_P2P_CLIENT;
 228         }
 229
 230         return WPA_IF_P2P_GROUP;
 231 }
 232
 233
 234 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 235                                                   const u8 *ssid,
 236                                                   size_t ssid_len, int *go)
 237 {
 238         struct wpa_ssid *s;
 239
 240         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 241                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 242                         if (s->disabled != 0 || !s->p2p_group ||
 243                             s->ssid_len != ssid_len ||
 244                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 245                                 continue;
 246                         if (s->mode == WPAS_MODE_P2P_GO &&
 247                             s != wpa_s->current_ssid)
 248                                 continue;
 249                         if (go)
 250                                 *go = s->mode == WPAS_MODE_P2P_GO;
 251                         return wpa_s;
 252                 }
 253         }
 254
 255         return NULL;
 256 }
 257
 258
 259 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 260                                  enum p2p_group_removal_reason removal_reason)
 261 {
 262         struct wpa_ssid *ssid;
 263         char *gtype;
 264         const char *reason;
 265
 266         ssid = wpa_s->current_ssid;
 267         if (ssid == NULL) {
 268                 /*
 269                  * The current SSID was not known, but there may still be a
 270                  * pending P2P group interface waiting for provisioning.
 271                  */
 272                 ssid = wpa_s->conf->ssid;
 273                 while (ssid) {
 274                         if (ssid->p2p_group &&
 275                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 276                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 277                                 break;
 278                         ssid = ssid->next;
 279                 }
 280                 if (ssid == NULL &&
 281                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 282                 {
 283                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 284                                    "not found");
 285                         return -1;
 286                 }
 287         }
 288         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 289                 gtype = "GO";
 290         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 291                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 292                 wpa_s->reassociate = 0;
 293                 wpa_s->disconnected = 1;
 294                 wpa_supplicant_deauthenticate(wpa_s,
 295                                               WLAN_REASON_DEAUTH_LEAVING);
 296                 gtype = "client";
 297         } else
 298                 gtype = "GO";
 299         if (wpa_s->cross_connect_in_use) {
 300                 wpa_s->cross_connect_in_use = 0;
 301                 wpa_msg(wpa_s->parent, MSG_INFO,
 302                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 303                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 304         }
 305         switch (removal_reason) {
 306         case P2P_GROUP_REMOVAL_REQUESTED:
 307                 reason = " reason=REQUESTED";
 308                 break;
 309         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 310                 reason = " reason=FORMATION_FAILED";
 311                 break;
 312         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 313                 reason = " reason=IDLE";
 314                 break;
 315         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 316                 reason = " reason=UNAVAILABLE";
 317                 break;
 318         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 319                 reason = " reason=GO_ENDING_SESSION";
 320                 break;
 321 #ifdef ANDROID_P2P
 322         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 323                 reason = " reason=FREQ_CONFLICT";
 324                 break;
 325 #endif
 326         default:
 327                 reason = "";
 328                 break;
 329         }
 330         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 331                 wpa_msg(wpa_s->parent, MSG_INFO,
 332                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 333                         wpa_s->ifname, gtype, reason);
 334         }
 335
 336         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 337                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 338
 339         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 340                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 341
 342         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 343                 struct wpa_global *global;
 344                 char *ifname;
 345                 enum wpa_driver_if_type type;
 346                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 347                         wpa_s->ifname);
 348                 global = wpa_s->global;
 349                 ifname = os_strdup(wpa_s->ifname);
 350                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 351                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 352                 wpa_s = global->ifaces;
 353                 if (wpa_s && ifname)
 354                         wpa_drv_if_remove(wpa_s, type, ifname);
 355                 os_free(ifname);
 356                 return 1;
 357         }
 358
 359         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 360         if (ssid && (ssid->p2p_group ||
 361                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 362                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 363                 int id = ssid->id;
 364                 if (ssid == wpa_s->current_ssid) {
 365                         wpa_sm_set_config(wpa_s->wpa, NULL);
 366                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 367                         wpa_s->current_ssid = NULL;
 368                 }
 369                 /*
 370                  * Networks objects created during any P2P activities are not
 371                  * exposed out as they might/will confuse certain non-P2P aware
 372                  * applications since these network objects won't behave like
 373                  * regular ones.
 374                  *
 375                  * Likewise, we don't send out network removed signals for such
 376                  * network objects.
 377                  */
 378                 wpa_config_remove_network(wpa_s->conf, id);
 379                 wpa_supplicant_clear_status(wpa_s);
 380                 wpa_supplicant_cancel_sched_scan(wpa_s);
 381         } else {
 382                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 383                            "found");
 384         }
 385         if (wpa_s->ap_iface)
 386                 wpa_supplicant_ap_deinit(wpa_s);
 387         else
 388                 wpa_drv_deinit_p2p_cli(wpa_s);
 389
 390         return 0;
 391 }
 392
 393
 394 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 395                                      u8 *go_dev_addr,
 396                                      const u8 *ssid, size_t ssid_len)
 397 {
 398         struct wpa_bss *bss;
 399         const u8 *bssid;
 400         struct wpabuf *p2p;
 401         u8 group_capab;
 402         const u8 *addr;
 403
 404         if (wpa_s->go_params)
 405                 bssid = wpa_s->go_params->peer_interface_addr;
 406         else
 407                 bssid = wpa_s->bssid;
 408
 409         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 410         if (bss == NULL) {
 411                 u8 iface_addr[ETH_ALEN];
 412                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 413                                            iface_addr) == 0)
 414                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 415         }
 416         if (bss == NULL) {
 417                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 418                            "group is persistent - BSS " MACSTR " not found",
 419                            MAC2STR(bssid));
 420                 return 0;
 421         }
 422
 423         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 424         if (p2p == NULL) {
 425                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 426                            "group is persistent - BSS " MACSTR
 427                            " did not include P2P IE", MAC2STR(bssid));
 428                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 429                             (u8 *) (bss + 1), bss->ie_len);
 430                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 431                             ((u8 *) bss + 1) + bss->ie_len,
 432                             bss->beacon_ie_len);
 433                 return 0;
 434         }
 435
 436         group_capab = p2p_get_group_capab(p2p);
 437         addr = p2p_get_go_dev_addr(p2p);
 438         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 439                    "group_capab=0x%x", group_capab);
 440         if (addr) {
 441                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 442                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 443                            MAC2STR(addr));
 444         } else
 445                 os_memset(go_dev_addr, 0, ETH_ALEN);
 446         wpabuf_free(p2p);
 447
 448         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 449                    "go_dev_addr=" MACSTR,
 450                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 451
 452         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 453 }
 454
 455
 456 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 457                                            struct wpa_ssid *ssid,
 458                                            const u8 *go_dev_addr)
 459 {
 460         struct wpa_ssid *s;
 461         int changed = 0;
 462
 463         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 464                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 465         for (s = wpa_s->conf->ssid; s; s = s->next) {
 466                 if (s->disabled == 2 &&
 467                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 468                     s->ssid_len == ssid->ssid_len &&
 469                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 470                         break;
 471         }
 472
 473         if (s) {
 474                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 475                            "entry");
 476                 if (ssid->passphrase && !s->passphrase)
 477                         changed = 1;
 478                 else if (ssid->passphrase && s->passphrase &&
 479                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 480                         changed = 1;
 481         } else {
 482                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 483                            "entry");
 484                 changed = 1;
 485                 s = wpa_config_add_network(wpa_s->conf);
 486                 if (s == NULL)
 487                         return -1;
 488
 489                 /*
 490                  * Instead of network_added we emit persistent_group_added
 491                  * notification. Also to keep the defense checks in
 492                  * persistent_group obj registration method, we set the
 493                  * relevant flags in s to designate it as a persistent group.
 494                  */
 495                 s->p2p_group = 1;
 496                 s->p2p_persistent_group = 1;
 497                 wpas_notify_persistent_group_added(wpa_s, s);
 498                 wpa_config_set_network_defaults(s);
 499         }
 500
 501         s->p2p_group = 1;
 502         s->p2p_persistent_group = 1;
 503         s->disabled = 2;
 504         s->bssid_set = 1;
 505         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 506         s->mode = ssid->mode;
 507         s->auth_alg = WPA_AUTH_ALG_OPEN;
 508         s->key_mgmt = WPA_KEY_MGMT_PSK;
 509         s->proto = WPA_PROTO_RSN;
 510         s->pairwise_cipher = WPA_CIPHER_CCMP;
 511         s->export_keys = 1;
 512         if (ssid->passphrase) {
 513                 os_free(s->passphrase);
 514                 s->passphrase = os_strdup(ssid->passphrase);
 515         }
 516         if (ssid->psk_set) {
 517                 s->psk_set = 1;
 518                 os_memcpy(s->psk, ssid->psk, 32);
 519         }
 520         if (s->passphrase && !s->psk_set)
 521                 wpa_config_update_psk(s);
 522         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 523                 os_free(s->ssid);
 524                 s->ssid = os_malloc(ssid->ssid_len);
 525         }
 526         if (s->ssid) {
 527                 s->ssid_len = ssid->ssid_len;
 528                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 529         }
 530
 531 #ifndef CONFIG_NO_CONFIG_WRITE
 532         if (changed && wpa_s->conf->update_config &&
 533             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 534                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 535         }
 536 #endif /* CONFIG_NO_CONFIG_WRITE */
 537
 538         return s->id;
 539 }
 540
 541
 542 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 543                                                  const u8 *addr)
 544 {
 545         struct wpa_ssid *ssid, *s;
 546         u8 *n;
 547         size_t i;
 548         int found = 0;
 549
 550         ssid = wpa_s->current_ssid;
 551         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 552             !ssid->p2p_persistent_group)
 553                 return;
 554
 555         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 556                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 557                         continue;
 558
 559                 if (s->ssid_len == ssid->ssid_len &&
 560                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 561                         break;
 562         }
 563
 564         if (s == NULL)
 565                 return;
 566
 567         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 568                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 569                               ETH_ALEN) != 0)
 570                         continue;
 571
 572                 if (i == s->num_p2p_clients - 1)
 573                         return; /* already the most recent entry */
 574
 575                 /* move the entry to mark it most recent */
 576                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 577                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 578                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 579                 os_memcpy(s->p2p_client_list +
 580                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 581                 found = 1;
 582                 break;
 583         }
 584
 585         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 586                 n = os_realloc_array(s->p2p_client_list,
 587                                      s->num_p2p_clients + 1, ETH_ALEN);
 588                 if (n == NULL)
 589                         return;
 590                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 591                 s->p2p_client_list = n;
 592                 s->num_p2p_clients++;
 593         } else if (!found) {
 594                 /* Not enough room for an additional entry - drop the oldest
 595                  * entry */
 596                 os_memmove(s->p2p_client_list,
 597                            s->p2p_client_list + ETH_ALEN,
 598                            (s->num_p2p_clients - 1) * ETH_ALEN);
 599                 os_memcpy(s->p2p_client_list +
 600                           (s->num_p2p_clients - 1) * ETH_ALEN,
 601                           addr, ETH_ALEN);
 602         }
 603
 604 #ifndef CONFIG_NO_CONFIG_WRITE
 605         if (wpa_s->parent->conf->update_config &&
 606             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 607                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 608 #endif /* CONFIG_NO_CONFIG_WRITE */
 609 }
 610
 611
 612 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 613                                            int success)
 614 {
 615         struct wpa_ssid *ssid;
 616         const char *ssid_txt;
 617         int client;
 618         int persistent;
 619         u8 go_dev_addr[ETH_ALEN];
 620         int network_id = -1;
 621
 622         /*
 623          * This callback is likely called for the main interface. Update wpa_s
 624          * to use the group interface if a new interface was created for the
 625          * group.
 626          */
 627         if (wpa_s->global->p2p_group_formation)
 628                 wpa_s = wpa_s->global->p2p_group_formation;
 629         wpa_s->global->p2p_group_formation = NULL;
 630         wpa_s->p2p_in_provisioning = 0;
 631
 632         if (!success) {
 633                 wpa_msg(wpa_s->parent, MSG_INFO,
 634                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 635                 wpas_p2p_group_delete(wpa_s,
 636                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 637                 return;
 638         }
 639
 640         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 641
 642         ssid = wpa_s->current_ssid;
 643         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 644                 ssid->mode = WPAS_MODE_P2P_GO;
 645                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 646                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 647         }
 648
 649         persistent = 0;
 650         if (ssid) {
 651                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 652                 client = ssid->mode == WPAS_MODE_INFRA;
 653                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 654                         persistent = ssid->p2p_persistent_group;
 655                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 656                                   ETH_ALEN);
 657                 } else
 658                         persistent = wpas_p2p_persistent_group(wpa_s,
 659                                                                go_dev_addr,
 660                                                                ssid->ssid,
 661                                                                ssid->ssid_len);
 662         } else {
 663                 ssid_txt = "";
 664                 client = wpa_s->p2p_group_interface ==
 665                         P2P_GROUP_INTERFACE_CLIENT;
 666                 os_memset(go_dev_addr, 0, ETH_ALEN);
 667         }
 668
 669         wpa_s->show_group_started = 0;
 670         if (client) {
 671                 /*
 672                  * Indicate event only after successfully completed 4-way
 673                  * handshake, i.e., when the interface is ready for data
 674                  * packets.
 675                  */
 676                 wpa_s->show_group_started = 1;
 677 #ifdef ANDROID_P2P
 678                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 679                  * So we need to restore wpa_s->global->p2p_group_formation */
 680                 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s);
 681                 wpa_s->global->p2p_group_formation = wpa_s;
 682 #endif
 683
 684         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 685                 char psk[65];
 686                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 687                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 688                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 689                         "%s",
 690                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 691                         MAC2STR(go_dev_addr),
 692                         persistent ? " [PERSISTENT]" : "");
 693                 wpas_p2p_cross_connect_setup(wpa_s);
 694                 wpas_p2p_set_group_idle_timeout(wpa_s);
 695         } else {
 696                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 697                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 698                         "go_dev_addr=" MACSTR "%s",
 699                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 700                         ssid && ssid->passphrase ? ssid->passphrase : "",
 701                         MAC2STR(go_dev_addr),
 702                         persistent ? " [PERSISTENT]" : "");
 703                 wpas_p2p_cross_connect_setup(wpa_s);
 704                 wpas_p2p_set_group_idle_timeout(wpa_s);
 705         }
 706
 707         if (persistent)
 708                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 709                                                              ssid, go_dev_addr);
 710         if (network_id < 0 && ssid)
 711                 network_id = ssid->id;
 712         if (!client)
 713                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 714 }
 715
 716
 717 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 718                                            unsigned int freq,
 719                                            const u8 *dst, const u8 *src,
 720                                            const u8 *bssid,
 721                                            const u8 *data, size_t data_len,
 722                                            enum offchannel_send_action_result
 723                                            result)
 724 {
 725         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 726
 727         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 728                 return;
 729         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 730                 return;
 731
 732         switch (result) {
 733         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 734                 res = P2P_SEND_ACTION_SUCCESS;
 735                 break;
 736         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 737                 res = P2P_SEND_ACTION_NO_ACK;
 738                 break;
 739         case OFFCHANNEL_SEND_ACTION_FAILED:
 740                 res = P2P_SEND_ACTION_FAILED;
 741                 break;
 742         }
 743
 744         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 745
 746         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 747             wpa_s->pending_pd_before_join &&
 748             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 749              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 750                 wpa_s->pending_pd_before_join = 0;
 751                 if (wpa_s->p2p_fallback_to_go_neg) {
 752                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 753                                 "during p2p_connect-auto");
 754                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 755                         return;
 756                 }
 757
 758                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 759                            "join-existing-group operation (no ACK for PD "
 760                            "Req)");
 761                 wpas_p2p_join_start(wpa_s);
 762         }
 763 }
 764
 765
 766 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 767                             const u8 *src, const u8 *bssid, const u8 *buf,
 768                             size_t len, unsigned int wait_time)
 769 {
 770         struct wpa_supplicant *wpa_s = ctx;
 771         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 772                                       wait_time,
 773                                       wpas_p2p_send_action_tx_status, 1);
 774 }
 775
 776
 777 static void wpas_send_action_done(void *ctx)
 778 {
 779         struct wpa_supplicant *wpa_s = ctx;
 780         offchannel_send_action_done(wpa_s);
 781 }
 782
 783
 784 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 785                                     struct p2p_go_neg_results *params)
 786 {
 787         if (wpa_s->go_params == NULL) {
 788                 wpa_s->go_params = os_malloc(sizeof(*params));
 789                 if (wpa_s->go_params == NULL)
 790                         return -1;
 791         }
 792         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 793         return 0;
 794 }
 795
 796
 797 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 798                                     struct p2p_go_neg_results *res)
 799 {
 800         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 801                    MAC2STR(res->peer_interface_addr));
 802         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 803                           res->ssid, res->ssid_len);
 804         wpa_supplicant_ap_deinit(wpa_s);
 805         wpas_copy_go_neg_results(wpa_s, res);
 806         if (res->wps_method == WPS_PBC)
 807                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 808         else {
 809                 u16 dev_pw_id = DEV_PW_DEFAULT;
 810                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 811                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 812                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 813                                    wpa_s->p2p_pin, 1, dev_pw_id);
 814         }
 815 }
 816
 817
 818 static void p2p_go_configured(void *ctx, void *data)
 819 {
 820         struct wpa_supplicant *wpa_s = ctx;
 821         struct p2p_go_neg_results *params = data;
 822         struct wpa_ssid *ssid;
 823         int network_id = -1;
 824
 825         ssid = wpa_s->current_ssid;
 826         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 827                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 828                 if (wpa_s->global->p2p_group_formation == wpa_s)
 829                         wpa_s->global->p2p_group_formation = NULL;
 830                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 831                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 832                         "go_dev_addr=" MACSTR "%s",
 833                         wpa_s->ifname,
 834                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 835                         ssid->frequency,
 836                         params->passphrase ? params->passphrase : "",
 837                         MAC2STR(wpa_s->global->p2p_dev_addr),
 838                         params->persistent_group ? " [PERSISTENT]" : "");
 839
 840                 if (params->persistent_group)
 841                         network_id = wpas_p2p_store_persistent_group(
 842                                 wpa_s->parent, ssid,
 843                                 wpa_s->global->p2p_dev_addr);
 844                 if (network_id < 0)
 845                         network_id = ssid->id;
 846                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 847                 wpas_p2p_cross_connect_setup(wpa_s);
 848                 wpas_p2p_set_group_idle_timeout(wpa_s);
 849                 return;
 850         }
 851
 852         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 853         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 854                                               params->peer_interface_addr)) {
 855                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 856                            "filtering");
 857                 return;
 858         }
 859         if (params->wps_method == WPS_PBC)
 860                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 861                                           params->peer_device_addr);
 862         else if (wpa_s->p2p_pin[0])
 863                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 864                                           wpa_s->p2p_pin, NULL, 0);
 865         os_free(wpa_s->go_params);
 866         wpa_s->go_params = NULL;
 867 }
 868
 869
 870 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 871                               struct p2p_go_neg_results *params,
 872                               int group_formation)
 873 {
 874         struct wpa_ssid *ssid;
 875
 876         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 877                 return;
 878
 879         ssid = wpa_config_add_network(wpa_s->conf);
 880         if (ssid == NULL)
 881                 return;
 882
 883         wpa_s->show_group_started = 0;
 884
 885         wpa_config_set_network_defaults(ssid);
 886         ssid->temporary = 1;
 887         ssid->p2p_group = 1;
 888         ssid->p2p_persistent_group = params->persistent_group;
 889         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 890                 WPAS_MODE_P2P_GO;
 891         ssid->frequency = params->freq;
 892         ssid->ht40 = params->ht40;
 893         ssid->ssid = os_zalloc(params->ssid_len + 1);
 894         if (ssid->ssid) {
 895                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 896                 ssid->ssid_len = params->ssid_len;
 897         }
 898         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 899         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 900         ssid->proto = WPA_PROTO_RSN;
 901         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 902         ssid->passphrase = os_strdup(params->passphrase);
 903         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 904
 905         wpa_s->ap_configured_cb = p2p_go_configured;
 906         wpa_s->ap_configured_cb_ctx = wpa_s;
 907         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 908         wpa_s->connect_without_scan = ssid;
 909         wpa_s->reassociate = 1;
 910         wpa_s->disconnected = 0;
 911         wpa_supplicant_req_scan(wpa_s, 0, 0);
 912 }
 913
 914
 915 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 916                                   const struct wpa_supplicant *src)
 917 {
 918         struct wpa_config *d;
 919         const struct wpa_config *s;
 920
 921         d = dst->conf;
 922         s = src->conf;
 923
 924 #define C(n) if (s->n) d->n = os_strdup(s->n)
 925         C(device_name);
 926         C(manufacturer);
 927         C(model_name);
 928         C(model_number);
 929         C(serial_number);
 930         C(config_methods);
 931 #undef C
 932
 933         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 934         os_memcpy(d->sec_device_type, s->sec_device_type,
 935                   sizeof(d->sec_device_type));
 936         d->num_sec_device_types = s->num_sec_device_types;
 937
 938         d->p2p_group_idle = s->p2p_group_idle;
 939         d->p2p_intra_bss = s->p2p_intra_bss;
 940         d->persistent_reconnect = s->persistent_reconnect;
 941         d->max_num_sta = s->max_num_sta;
 942         d->pbc_in_m1 = s->pbc_in_m1;
 943 }
 944
 945
 946 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 947                                         enum wpa_driver_if_type type)
 948 {
 949         char ifname[120], force_ifname[120];
 950
 951         if (wpa_s->pending_interface_name[0]) {
 952                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 953                            "- skip creation of a new one");
 954                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 955                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 956                                    "unknown?! ifname='%s'",
 957                                    wpa_s->pending_interface_name);
 958                         return -1;
 959                 }
 960                 return 0;
 961         }
 962
 963         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 964                     wpa_s->p2p_group_idx);
 965         if (os_strlen(ifname) >= IFNAMSIZ &&
 966             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 967                 /* Try to avoid going over the IFNAMSIZ length limit */
 968                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 969                             wpa_s->p2p_group_idx);
 970         }
 971         force_ifname[0] = '\0';
 972
 973         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 974                    ifname);
 975         wpa_s->p2p_group_idx++;
 976
 977         wpa_s->pending_interface_type = type;
 978         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 979                            wpa_s->pending_interface_addr, NULL) < 0) {
 980                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 981                            "interface");
 982                 return -1;
 983         }
 984
 985         if (force_ifname[0]) {
 986                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 987                            force_ifname);
 988                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 989                            sizeof(wpa_s->pending_interface_name));
 990         } else
 991                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 992                            sizeof(wpa_s->pending_interface_name));
 993         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 994                    MACSTR, wpa_s->pending_interface_name,
 995                    MAC2STR(wpa_s->pending_interface_addr));
 996
 997         return 0;
 998 }
 999
1000
1001 static void wpas_p2p_remove_pending_group_interface(
1002         struct wpa_supplicant *wpa_s)
1003 {
1004         if (!wpa_s->pending_interface_name[0] ||
1005             is_zero_ether_addr(wpa_s->pending_interface_addr))
1006                 return; /* No pending virtual interface */
1007
1008         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1009                    wpa_s->pending_interface_name);
1010         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1011                           wpa_s->pending_interface_name);
1012         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1013         wpa_s->pending_interface_name[0] = '\0';
1014 }
1015
1016
1017 static struct wpa_supplicant *
1018 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1019 {
1020         struct wpa_interface iface;
1021         struct wpa_supplicant *group_wpa_s;
1022
1023         if (!wpa_s->pending_interface_name[0]) {
1024                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1025                 if (!wpas_p2p_create_iface(wpa_s))
1026                         return NULL;
1027                 /*
1028                  * Something has forced us to remove the pending interface; try
1029                  * to create a new one and hope for the best that we will get
1030                  * the same local address.
1031                  */
1032                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1033                                                  WPA_IF_P2P_CLIENT) < 0)
1034                         return NULL;
1035         }
1036
1037         os_memset(&iface, 0, sizeof(iface));
1038         iface.ifname = wpa_s->pending_interface_name;
1039         iface.driver = wpa_s->driver->name;
1040         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1041         iface.driver_param = wpa_s->conf->driver_param;
1042         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1043         if (group_wpa_s == NULL) {
1044                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1045                            "wpa_supplicant interface");
1046                 return NULL;
1047         }
1048         wpa_s->pending_interface_name[0] = '\0';
1049         group_wpa_s->parent = wpa_s;
1050         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1051                 P2P_GROUP_INTERFACE_CLIENT;
1052         wpa_s->global->p2p_group_formation = group_wpa_s;
1053
1054         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1055
1056         return group_wpa_s;
1057 }
1058
1059
1060 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1061                                              void *timeout_ctx)
1062 {
1063         struct wpa_supplicant *wpa_s = eloop_ctx;
1064         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1065         if (wpa_s->global->p2p)
1066                 p2p_group_formation_failed(wpa_s->global->p2p);
1067         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1068                 wpa_drv_p2p_group_formation_failed(wpa_s);
1069         wpas_group_formation_completed(wpa_s, 0);
1070 }
1071
1072
1073 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1074 {
1075         struct wpa_supplicant *wpa_s = ctx;
1076
1077         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1078                 wpa_drv_cancel_remain_on_channel(wpa_s);
1079                 wpa_s->off_channel_freq = 0;
1080                 wpa_s->roc_waiting_drv_freq = 0;
1081         }
1082
1083         if (res->status) {
1084                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1085                         res->status);
1086                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1087                 wpas_p2p_remove_pending_group_interface(wpa_s);
1088                 return;
1089         }
1090
1091         if (wpa_s->p2p_go_ht40)
1092                 res->ht40 = 1;
1093
1094         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1095         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1096
1097         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1098                 struct wpa_ssid *ssid;
1099                 ssid = wpa_config_get_network(wpa_s->conf,
1100                                               wpa_s->p2p_persistent_id);
1101                 if (ssid && ssid->disabled == 2 &&
1102                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1103                         size_t len = os_strlen(ssid->passphrase);
1104                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1105                                    "on requested persistent group");
1106                         os_memcpy(res->passphrase, ssid->passphrase, len);
1107                         res->passphrase[len] = '\0';
1108                 }
1109         }
1110
1111         if (wpa_s->create_p2p_iface) {
1112                 struct wpa_supplicant *group_wpa_s =
1113                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1114                 if (group_wpa_s == NULL) {
1115                         wpas_p2p_remove_pending_group_interface(wpa_s);
1116                         return;
1117                 }
1118                 if (group_wpa_s != wpa_s) {
1119                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1120                                   sizeof(group_wpa_s->p2p_pin));
1121                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1122                 }
1123                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1124                 wpa_s->pending_interface_name[0] = '\0';
1125                 group_wpa_s->p2p_in_provisioning = 1;
1126
1127                 if (res->role_go)
1128                         wpas_start_wps_go(group_wpa_s, res, 1);
1129                 else
1130                         wpas_start_wps_enrollee(group_wpa_s, res);
1131         } else {
1132                 wpa_s->p2p_in_provisioning = 1;
1133                 wpa_s->global->p2p_group_formation = wpa_s;
1134
1135                 if (res->role_go)
1136                         wpas_start_wps_go(wpa_s, res, 1);
1137                 else
1138                         wpas_start_wps_enrollee(ctx, res);
1139         }
1140
1141         wpa_s->p2p_long_listen = 0;
1142         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1143
1144         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1145         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1146                                (res->peer_config_timeout % 100) * 10000,
1147                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1148 }
1149
1150
1151 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1152 {
1153         struct wpa_supplicant *wpa_s = ctx;
1154         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1155                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1156
1157         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1158 }
1159
1160
1161 void wpas_dev_found(void *ctx, const u8 *addr,
1162                     const struct p2p_peer_info *info,
1163                     int new_device)
1164 {
1165 #ifndef CONFIG_NO_STDOUT_DEBUG
1166         struct wpa_supplicant *wpa_s = ctx;
1167         char devtype[WPS_DEV_TYPE_BUFSIZE];
1168 #define WFD_DEV_INFO_SIZE 9
1169         char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
1170         os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
1171 #ifdef CONFIG_WIFI_DISPLAY
1172         if (info->wfd_subelems) {
1173                 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
1174                                         wpabuf_head(info->wfd_subelems),
1175                                         WFD_DEV_INFO_SIZE);
1176         }
1177 #endif /* CONFIG_WIFI_DISPLAY */
1178         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1179                 " p2p_dev_addr=" MACSTR
1180                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1181                 "dev_capab=0x%x group_capab=0x%x%s%s",
1182                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1183                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1184                                      sizeof(devtype)),
1185                 info->device_name, info->config_methods,
1186                 info->dev_capab, info->group_capab,
1187                 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
1188 #endif /* CONFIG_NO_STDOUT_DEBUG */
1189
1190         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1191 }
1192
1193
1194 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1195 {
1196         struct wpa_supplicant *wpa_s = ctx;
1197
1198         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1199                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1200
1201         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1202 }
1203
1204
1205 static int wpas_start_listen(void *ctx, unsigned int freq,
1206                              unsigned int duration,
1207                              const struct wpabuf *probe_resp_ie)
1208 {
1209         struct wpa_supplicant *wpa_s = ctx;
1210
1211         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1212
1213         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1214                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1215                            "report received Probe Request frames");
1216                 return -1;
1217         }
1218
1219         wpa_s->pending_listen_freq = freq;
1220         wpa_s->pending_listen_duration = duration;
1221
1222         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1223                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1224                            "to remain on channel (%u MHz) for Listen "
1225                            "state", freq);
1226                 wpa_s->pending_listen_freq = 0;
1227                 return -1;
1228         }
1229         wpa_s->off_channel_freq = 0;
1230         wpa_s->roc_waiting_drv_freq = freq;
1231
1232         return 0;
1233 }
1234
1235
1236 static void wpas_stop_listen(void *ctx)
1237 {
1238         struct wpa_supplicant *wpa_s = ctx;
1239         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1240                 wpa_drv_cancel_remain_on_channel(wpa_s);
1241                 wpa_s->off_channel_freq = 0;
1242                 wpa_s->roc_waiting_drv_freq = 0;
1243         }
1244         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1245         wpa_drv_probe_req_report(wpa_s, 0);
1246 }
1247
1248
1249 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1250 {
1251         struct wpa_supplicant *wpa_s = ctx;
1252         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1253 }
1254
1255
1256 static struct p2p_srv_bonjour *
1257 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1258                              const struct wpabuf *query)
1259 {
1260         struct p2p_srv_bonjour *bsrv;
1261         size_t len;
1262
1263         len = wpabuf_len(query);
1264         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1265                          struct p2p_srv_bonjour, list) {
1266                 if (len == wpabuf_len(bsrv->query) &&
1267                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1268                               len) == 0)
1269                         return bsrv;
1270         }
1271         return NULL;
1272 }
1273
1274
1275 static struct p2p_srv_upnp *
1276 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1277                           const char *service)
1278 {
1279         struct p2p_srv_upnp *usrv;
1280
1281         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1282                          struct p2p_srv_upnp, list) {
1283                 if (version == usrv->version &&
1284                     os_strcmp(service, usrv->service) == 0)
1285                         return usrv;
1286         }
1287         return NULL;
1288 }
1289
1290
1291 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1292                                         u8 srv_trans_id)
1293 {
1294         u8 *len_pos;
1295
1296         if (wpabuf_tailroom(resp) < 5)
1297                 return;
1298
1299         /* Length (to be filled) */
1300         len_pos = wpabuf_put(resp, 2);
1301         wpabuf_put_u8(resp, srv_proto);
1302         wpabuf_put_u8(resp, srv_trans_id);
1303         /* Status Code */
1304         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1305         /* Response Data: empty */
1306         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1307 }
1308
1309
1310 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1311                                 struct wpabuf *resp, u8 srv_trans_id)
1312 {
1313         struct p2p_srv_bonjour *bsrv;
1314         u8 *len_pos;
1315
1316         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1317
1318         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1319                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1320                 return;
1321         }
1322
1323         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1324                          struct p2p_srv_bonjour, list) {
1325                 if (wpabuf_tailroom(resp) <
1326                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1327                         return;
1328                 /* Length (to be filled) */
1329                 len_pos = wpabuf_put(resp, 2);
1330                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1331                 wpabuf_put_u8(resp, srv_trans_id);
1332                 /* Status Code */
1333                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1334                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1335                                   wpabuf_head(bsrv->resp),
1336                                   wpabuf_len(bsrv->resp));
1337                 /* Response Data */
1338                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1339                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1340                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1341                              2);
1342         }
1343 }
1344
1345
1346 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1347                                 struct wpabuf *resp, u8 srv_trans_id,
1348                                 const u8 *query, size_t query_len)
1349 {
1350         struct p2p_srv_bonjour *bsrv;
1351         struct wpabuf buf;
1352         u8 *len_pos;
1353
1354         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1355                           query, query_len);
1356         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1357                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1358                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1359                                             srv_trans_id);
1360                 return;
1361         }
1362
1363         if (query_len == 0) {
1364                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1365                 return;
1366         }
1367
1368         if (wpabuf_tailroom(resp) < 5)
1369                 return;
1370         /* Length (to be filled) */
1371         len_pos = wpabuf_put(resp, 2);
1372         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1373         wpabuf_put_u8(resp, srv_trans_id);
1374
1375         wpabuf_set(&buf, query, query_len);
1376         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1377         if (bsrv == NULL) {
1378                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1379                            "available");
1380
1381                 /* Status Code */
1382                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1383                 /* Response Data: empty */
1384                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1385                              2);
1386                 return;
1387         }
1388
1389         /* Status Code */
1390         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1391         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1392                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1393
1394         if (wpabuf_tailroom(resp) >=
1395             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1396                 /* Response Data */
1397                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1398                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1399         }
1400         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1401 }
1402
1403
1404 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1405                              struct wpabuf *resp, u8 srv_trans_id)
1406 {
1407         struct p2p_srv_upnp *usrv;
1408         u8 *len_pos;
1409
1410         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1411
1412         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1413                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1414                 return;
1415         }
1416
1417         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1418                          struct p2p_srv_upnp, list) {
1419                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1420                         return;
1421
1422                 /* Length (to be filled) */
1423                 len_pos = wpabuf_put(resp, 2);
1424                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1425                 wpabuf_put_u8(resp, srv_trans_id);
1426
1427                 /* Status Code */
1428                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1429                 /* Response Data */
1430                 wpabuf_put_u8(resp, usrv->version);
1431                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1432                            usrv->service);
1433                 wpabuf_put_str(resp, usrv->service);
1434                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1435                              2);
1436         }
1437 }
1438
1439
1440 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1441                              struct wpabuf *resp, u8 srv_trans_id,
1442                              const u8 *query, size_t query_len)
1443 {
1444         struct p2p_srv_upnp *usrv;
1445         u8 *len_pos;
1446         u8 version;
1447         char *str;
1448         int count = 0;
1449
1450         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1451                           query, query_len);
1452
1453         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1454                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1455                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1456                                             srv_trans_id);
1457                 return;
1458         }
1459
1460         if (query_len == 0) {
1461                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1462                 return;
1463         }
1464
1465         if (wpabuf_tailroom(resp) < 5)
1466                 return;
1467
1468         /* Length (to be filled) */
1469         len_pos = wpabuf_put(resp, 2);
1470         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1471         wpabuf_put_u8(resp, srv_trans_id);
1472
1473         version = query[0];
1474         str = os_malloc(query_len);
1475         if (str == NULL)
1476                 return;
1477         os_memcpy(str, query + 1, query_len - 1);
1478         str[query_len - 1] = '\0';
1479
1480         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1481                          struct p2p_srv_upnp, list) {
1482                 if (version != usrv->version)
1483                         continue;
1484
1485                 if (os_strcmp(str, "ssdp:all") != 0 &&
1486                     os_strstr(usrv->service, str) == NULL)
1487                         continue;
1488
1489                 if (wpabuf_tailroom(resp) < 2)
1490                         break;
1491                 if (count == 0) {
1492                         /* Status Code */
1493                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1494                         /* Response Data */
1495                         wpabuf_put_u8(resp, version);
1496                 } else
1497                         wpabuf_put_u8(resp, ',');
1498
1499                 count++;
1500
1501                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1502                            usrv->service);
1503                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1504                         break;
1505                 wpabuf_put_str(resp, usrv->service);
1506         }
1507         os_free(str);
1508
1509         if (count == 0) {
1510                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1511                            "available");
1512                 /* Status Code */
1513                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1514                 /* Response Data: empty */
1515         }
1516
1517         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1518 }
1519
1520
1521 #ifdef CONFIG_WIFI_DISPLAY
1522 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1523                             struct wpabuf *resp, u8 srv_trans_id,
1524                             const u8 *query, size_t query_len)
1525 {
1526         const u8 *pos;
1527         u8 role;
1528         u8 *len_pos;
1529
1530         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1531
1532         if (!wpa_s->global->wifi_display) {
1533                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1534                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1535                                             srv_trans_id);
1536                 return;
1537         }
1538
1539         if (query_len < 1) {
1540                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1541                            "Role");
1542                 return;
1543         }
1544
1545         if (wpabuf_tailroom(resp) < 5)
1546                 return;
1547
1548         pos = query;
1549         role = *pos++;
1550         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1551
1552         /* TODO: role specific handling */
1553
1554         /* Length (to be filled) */
1555         len_pos = wpabuf_put(resp, 2);
1556         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1557         wpabuf_put_u8(resp, srv_trans_id);
1558         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1559
1560         while (pos < query + query_len) {
1561                 if (*pos < MAX_WFD_SUBELEMS &&
1562                     wpa_s->global->wfd_subelem[*pos] &&
1563                     wpabuf_tailroom(resp) >=
1564                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1565                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1566                                    "subelement %u", *pos);
1567                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1568                 }
1569                 pos++;
1570         }
1571
1572         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1573 }
1574 #endif /* CONFIG_WIFI_DISPLAY */
1575
1576
1577 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1578                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1579 {
1580         struct wpa_supplicant *wpa_s = ctx;
1581         const u8 *pos = tlvs;
1582         const u8 *end = tlvs + tlvs_len;
1583         const u8 *tlv_end;
1584         u16 slen;
1585         struct wpabuf *resp;
1586         u8 srv_proto, srv_trans_id;
1587         size_t buf_len;
1588         char *buf;
1589
1590         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1591                     tlvs, tlvs_len);
1592         buf_len = 2 * tlvs_len + 1;
1593         buf = os_malloc(buf_len);
1594         if (buf) {
1595                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1596                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1597                              MACSTR " %u %u %s",
1598                              freq, MAC2STR(sa), dialog_token, update_indic,
1599                              buf);
1600                 os_free(buf);
1601         }
1602
1603         if (wpa_s->p2p_sd_over_ctrl_iface) {
1604                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1605                                            update_indic, tlvs, tlvs_len);
1606                 return; /* to be processed by an external program */
1607         }
1608
1609         resp = wpabuf_alloc(10000);
1610         if (resp == NULL)
1611                 return;
1612
1613         while (pos + 1 < end) {
1614                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1615                 slen = WPA_GET_LE16(pos);
1616                 pos += 2;
1617                 if (pos + slen > end || slen < 2) {
1618                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1619                                    "length");
1620                         wpabuf_free(resp);
1621                         return;
1622                 }
1623                 tlv_end = pos + slen;
1624
1625                 srv_proto = *pos++;
1626                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1627                            srv_proto);
1628                 srv_trans_id = *pos++;
1629                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1630                            srv_trans_id);
1631
1632                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1633                             pos, tlv_end - pos);
1634
1635
1636                 if (wpa_s->force_long_sd) {
1637                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1638                                    "response");
1639                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1640                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1641                         goto done;
1642                 }
1643
1644                 switch (srv_proto) {
1645                 case P2P_SERV_ALL_SERVICES:
1646                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1647                                    "for all services");
1648                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1649                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1650                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1651                                            "discovery protocols available");
1652                                 wpas_sd_add_proto_not_avail(
1653                                         resp, P2P_SERV_ALL_SERVICES,
1654                                         srv_trans_id);
1655                                 break;
1656                         }
1657                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1658                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1659                         break;
1660                 case P2P_SERV_BONJOUR:
1661                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1662                                             pos, tlv_end - pos);
1663                         break;
1664                 case P2P_SERV_UPNP:
1665                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1666                                          pos, tlv_end - pos);
1667                         break;
1668 #ifdef CONFIG_WIFI_DISPLAY
1669                 case P2P_SERV_WIFI_DISPLAY:
1670                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1671                                         pos, tlv_end - pos);
1672                         break;
1673 #endif /* CONFIG_WIFI_DISPLAY */
1674                 default:
1675                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1676                                    "protocol %u", srv_proto);
1677                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1678                                                     srv_trans_id);
1679                         break;
1680                 }
1681
1682                 pos = tlv_end;
1683         }
1684
1685 done:
1686         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1687                                    update_indic, tlvs, tlvs_len);
1688
1689         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1690
1691         wpabuf_free(resp);
1692 }
1693
1694
1695 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1696                       const u8 *tlvs, size_t tlvs_len)
1697 {
1698         struct wpa_supplicant *wpa_s = ctx;
1699         const u8 *pos = tlvs;
1700         const u8 *end = tlvs + tlvs_len;
1701         const u8 *tlv_end;
1702         u16 slen;
1703         size_t buf_len;
1704         char *buf;
1705
1706         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1707                     tlvs, tlvs_len);
1708         if (tlvs_len > 1500) {
1709                 /* TODO: better way for handling this */
1710                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1711                              P2P_EVENT_SERV_DISC_RESP MACSTR
1712                              " %u <long response: %u bytes>",
1713                              MAC2STR(sa), update_indic,
1714                              (unsigned int) tlvs_len);
1715         } else {
1716                 buf_len = 2 * tlvs_len + 1;
1717                 buf = os_malloc(buf_len);
1718                 if (buf) {
1719                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1720                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1721                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1722                                      MAC2STR(sa), update_indic, buf);
1723                         os_free(buf);
1724                 }
1725         }
1726
1727         while (pos < end) {
1728                 u8 srv_proto, srv_trans_id, status;
1729
1730                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1731                 slen = WPA_GET_LE16(pos);
1732                 pos += 2;
1733                 if (pos + slen > end || slen < 3) {
1734                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1735                                    "length");
1736                         return;
1737                 }
1738                 tlv_end = pos + slen;
1739
1740                 srv_proto = *pos++;
1741                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1742                            srv_proto);
1743                 srv_trans_id = *pos++;
1744                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1745                            srv_trans_id);
1746                 status = *pos++;
1747                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1748                            status);
1749
1750                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1751                             pos, tlv_end - pos);
1752
1753                 pos = tlv_end;
1754         }
1755
1756         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1757 }
1758
1759
1760 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1761                         const struct wpabuf *tlvs)
1762 {
1763         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1764                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1765         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1766                 return 0;
1767         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1768 }
1769
1770
1771 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1772                              u8 version, const char *query)
1773 {
1774         struct wpabuf *tlvs;
1775         u64 ret;
1776
1777         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1778         if (tlvs == NULL)
1779                 return 0;
1780         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1781         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1782         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1783         wpabuf_put_u8(tlvs, version);
1784         wpabuf_put_str(tlvs, query);
1785         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1786         wpabuf_free(tlvs);
1787         return ret;
1788 }
1789
1790
1791 #ifdef CONFIG_WIFI_DISPLAY
1792
1793 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1794                                    const struct wpabuf *tlvs)
1795 {
1796         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1797                 return 0;
1798         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1799                 return 0;
1800         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1801 }
1802
1803
1804 #define MAX_WFD_SD_SUBELEMS 20
1805
1806 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1807                                 const char *subelems)
1808 {
1809         u8 *len;
1810         const char *pos;
1811         int val;
1812         int count = 0;
1813
1814         len = wpabuf_put(tlvs, 2);
1815         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1816         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1817
1818         wpabuf_put_u8(tlvs, role);
1819
1820         pos = subelems;
1821         while (*pos) {
1822                 val = atoi(pos);
1823                 if (val >= 0 && val < 256) {
1824                         wpabuf_put_u8(tlvs, val);
1825                         count++;
1826                         if (count == MAX_WFD_SD_SUBELEMS)
1827                                 break;
1828                 }
1829                 pos = os_strchr(pos + 1, ',');
1830                 if (pos == NULL)
1831                         break;
1832                 pos++;
1833         }
1834
1835         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1836 }
1837
1838
1839 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1840                                      const u8 *dst, const char *role)
1841 {
1842         struct wpabuf *tlvs;
1843         u64 ret;
1844         const char *subelems;
1845         u8 id = 1;
1846
1847         subelems = os_strchr(role, ' ');
1848         if (subelems == NULL)
1849                 return 0;
1850         subelems++;
1851
1852         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1853         if (tlvs == NULL)
1854                 return 0;
1855
1856         if (os_strstr(role, "[source]"))
1857                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1858         if (os_strstr(role, "[pri-sink]"))
1859                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1860         if (os_strstr(role, "[sec-sink]"))
1861                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1862         if (os_strstr(role, "[source+sink]"))
1863                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1864
1865         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1866         wpabuf_free(tlvs);
1867         return ret;
1868 }
1869
1870 #endif /* CONFIG_WIFI_DISPLAY */
1871
1872
1873 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1874 {
1875         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1876                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1877         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1878                 return -1;
1879         return p2p_sd_cancel_request(wpa_s->global->p2p,
1880                                      (void *) (uintptr_t) req);
1881 }
1882
1883
1884 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1885                           const u8 *dst, u8 dialog_token,
1886                           const struct wpabuf *resp_tlvs)
1887 {
1888         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1889                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1890                                         resp_tlvs);
1891                 return;
1892         }
1893         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1894                 return;
1895         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1896                         resp_tlvs);
1897 }
1898
1899 #ifdef ANDROID_P2P
1900 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1901 #else
1902 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1903 #endif
1904 {
1905         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1906                 wpa_drv_p2p_service_update(wpa_s);
1907                 return;
1908         }
1909         if (wpa_s->global->p2p)
1910 #ifdef ANDROID_P2P
1911                 p2p_sd_service_update(wpa_s->global->p2p, action);
1912 #else
1913                 p2p_sd_service_update(wpa_s->global->p2p);
1914 #endif
1915 }
1916
1917
1918 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1919 {
1920         dl_list_del(&bsrv->list);
1921         wpabuf_free(bsrv->query);
1922         wpabuf_free(bsrv->resp);
1923         os_free(bsrv);
1924 }
1925
1926
1927 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1928 {
1929         dl_list_del(&usrv->list);
1930         os_free(usrv->service);
1931         os_free(usrv);
1932 }
1933
1934
1935 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1936 {
1937         struct p2p_srv_bonjour *bsrv, *bn;
1938         struct p2p_srv_upnp *usrv, *un;
1939
1940         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1941                               struct p2p_srv_bonjour, list)
1942                 wpas_p2p_srv_bonjour_free(bsrv);
1943
1944         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1945                               struct p2p_srv_upnp, list)
1946                 wpas_p2p_srv_upnp_free(usrv);
1947
1948 #ifdef ANDROID_P2P
1949         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1950 #else
1951         wpas_p2p_sd_service_update(wpa_s);
1952 #endif
1953 }
1954
1955
1956 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1957                                  struct wpabuf *query, struct wpabuf *resp)
1958 {
1959         struct p2p_srv_bonjour *bsrv;
1960
1961         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1962         if (bsrv) {
1963                 wpabuf_free(query);
1964                 wpabuf_free(bsrv->resp);
1965                 bsrv->resp = resp;
1966                 return 0;
1967         }
1968
1969         bsrv = os_zalloc(sizeof(*bsrv));
1970         if (bsrv == NULL)
1971                 return -1;
1972         bsrv->query = query;
1973         bsrv->resp = resp;
1974         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1975
1976 #ifdef ANDROID_P2P
1977         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
1978 #else
1979         wpas_p2p_sd_service_update(wpa_s);
1980 #endif
1981         return 0;
1982 }
1983
1984
1985 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1986                                  const struct wpabuf *query)
1987 {
1988         struct p2p_srv_bonjour *bsrv;
1989
1990         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1991         if (bsrv == NULL)
1992                 return -1;
1993         wpas_p2p_srv_bonjour_free(bsrv);
1994 #ifdef ANDROID_P2P
1995         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
1996 #else
1997         wpas_p2p_sd_service_update(wpa_s);
1998 #endif
1999         return 0;
2000 }
2001
2002
2003 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2004                               const char *service)
2005 {
2006         struct p2p_srv_upnp *usrv;
2007
2008         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2009                 return 0; /* Already listed */
2010         usrv = os_zalloc(sizeof(*usrv));
2011         if (usrv == NULL)
2012                 return -1;
2013         usrv->version = version;
2014         usrv->service = os_strdup(service);
2015         if (usrv->service == NULL) {
2016                 os_free(usrv);
2017                 return -1;
2018         }
2019         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2020
2021 #ifdef ANDROID_P2P
2022         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2023 #else
2024         wpas_p2p_sd_service_update(wpa_s);
2025 #endif
2026         return 0;
2027 }
2028
2029
2030 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2031                               const char *service)
2032 {
2033         struct p2p_srv_upnp *usrv;
2034
2035         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2036         if (usrv == NULL)
2037                 return -1;
2038         wpas_p2p_srv_upnp_free(usrv);
2039 #ifdef ANDROID_P2P
2040         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2041 #else
2042         wpas_p2p_sd_service_update(wpa_s);
2043 #endif
2044         return 0;
2045 }
2046
2047
2048 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2049                                          const u8 *peer, const char *params,
2050                                          unsigned int generated_pin)
2051 {
2052         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2053                 MAC2STR(peer), generated_pin, params);
2054 }
2055
2056
2057 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2058                                         const u8 *peer, const char *params)
2059 {
2060         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2061                 MAC2STR(peer), params);
2062 }
2063
2064
2065 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2066                         const u8 *dev_addr, const u8 *pri_dev_type,
2067                         const char *dev_name, u16 supp_config_methods,
2068                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2069                         size_t group_id_len)
2070 {
2071         struct wpa_supplicant *wpa_s = ctx;
2072         char devtype[WPS_DEV_TYPE_BUFSIZE];
2073         char params[300];
2074         u8 empty_dev_type[8];
2075         unsigned int generated_pin = 0;
2076         struct wpa_supplicant *group = NULL;
2077
2078         if (group_id) {
2079                 for (group = wpa_s->global->ifaces; group; group = group->next)
2080                 {
2081                         struct wpa_ssid *s = group->current_ssid;
2082                         if (s != NULL &&
2083                             s->mode == WPAS_MODE_P2P_GO &&
2084                             group_id_len - ETH_ALEN == s->ssid_len &&
2085                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2086                                       s->ssid_len) == 0)
2087                                 break;
2088                 }
2089         }
2090
2091         if (pri_dev_type == NULL) {
2092                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2093                 pri_dev_type = empty_dev_type;
2094         }
2095         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2096                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2097                     "dev_capab=0x%x group_capab=0x%x%s%s",
2098                     MAC2STR(dev_addr),
2099                     wps_dev_type_bin2str(pri_dev_type, devtype,
2100                                          sizeof(devtype)),
2101                     dev_name, supp_config_methods, dev_capab, group_capab,
2102                     group ? " group=" : "",
2103                     group ? group->ifname : "");
2104         params[sizeof(params) - 1] = '\0';
2105
2106         if (config_methods & WPS_CONFIG_DISPLAY) {
2107                 generated_pin = wps_generate_pin();
2108                 wpas_prov_disc_local_display(wpa_s, peer, params,
2109                                              generated_pin);
2110         } else if (config_methods & WPS_CONFIG_KEYPAD)
2111                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2112         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2113                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2114                         "%s", MAC2STR(peer), params);
2115
2116         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2117                                             P2P_PROV_DISC_SUCCESS,
2118                                             config_methods, generated_pin);
2119 }
2120
2121
2122 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2123 {
2124         struct wpa_supplicant *wpa_s = ctx;
2125         unsigned int generated_pin = 0;
2126         char params[20];
2127
2128         if (wpa_s->pending_pd_before_join &&
2129             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2130              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2131                 wpa_s->pending_pd_before_join = 0;
2132                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2133                            "join-existing-group operation");
2134                 wpas_p2p_join_start(wpa_s);
2135                 return;
2136         }
2137
2138         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2139             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2140                 os_snprintf(params, sizeof(params), " peer_go=%d",
2141                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2142         else
2143                 params[0] = '\0';
2144
2145         if (config_methods & WPS_CONFIG_DISPLAY)
2146                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2147         else if (config_methods & WPS_CONFIG_KEYPAD) {
2148                 generated_pin = wps_generate_pin();
2149                 wpas_prov_disc_local_display(wpa_s, peer, params,
2150                                              generated_pin);
2151         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2152                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2153                         "%s", MAC2STR(peer), params);
2154
2155         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2156                                             P2P_PROV_DISC_SUCCESS,
2157                                             config_methods, generated_pin);
2158 }
2159
2160
2161 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2162                                 enum p2p_prov_disc_status status)
2163 {
2164         struct wpa_supplicant *wpa_s = ctx;
2165
2166         if (wpa_s->p2p_fallback_to_go_neg) {
2167                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2168                         "failed - fall back to GO Negotiation");
2169                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2170                 return;
2171         }
2172
2173 #ifdef ANDROID_P2P
2174         /* If provision discovery failed it is safe to cancel the timer here and
2175          * also do not start the join */
2176         if (wpa_s->pending_pd_before_join &&
2177             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2178              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2179                 wpa_s->pending_pd_before_join = 0;
2180                 wpa_printf(MSG_DEBUG, "P2P: Do not Start pending "
2181                            "join-existing-group operation");
2182                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2183         }
2184 #endif /* ANDROID_P2P */
2185         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2186                 " p2p_dev_addr=" MACSTR " status=%d",
2187                 MAC2STR(peer), status);
2188
2189         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2190                                             status, 0, 0);
2191 }
2192
2193
2194 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2195                                   const u8 *go_dev_addr, const u8 *ssid,
2196                                   size_t ssid_len, int *go, u8 *group_bssid,
2197                                   int *force_freq, int persistent_group)
2198 {
2199         struct wpa_supplicant *wpa_s = ctx;
2200         struct wpa_ssid *s;
2201         u8 cur_bssid[ETH_ALEN];
2202         int res;
2203         struct wpa_supplicant *grp;
2204
2205         if (!persistent_group) {
2206                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2207                            " to join an active group", MAC2STR(sa));
2208                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2209                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2210                      == 0 ||
2211                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2212                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2213                                    "authorized invitation");
2214                         goto accept_inv;
2215                 }
2216                 /*
2217                  * Do not accept the invitation automatically; notify user and
2218                  * request approval.
2219                  */
2220                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2221         }
2222
2223         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2224         if (grp) {
2225                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2226                            "running persistent group");
2227                 if (*go)
2228                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2229                 goto accept_inv;
2230         }
2231
2232         if (!wpa_s->conf->persistent_reconnect)
2233                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2234
2235         for (s = wpa_s->conf->ssid; s; s = s->next) {
2236                 if (s->disabled == 2 &&
2237                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2238                     s->ssid_len == ssid_len &&
2239                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2240                         break;
2241         }
2242
2243         if (!s) {
2244                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2245                            " requested reinvocation of an unknown group",
2246                            MAC2STR(sa));
2247                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2248         }
2249
2250         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2251                 *go = 1;
2252                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2253                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2254                                    "interface is already in use - reject "
2255                                    "invitation");
2256                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2257                 }
2258                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2259         } else if (s->mode == WPAS_MODE_P2P_GO) {
2260                 *go = 1;
2261                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2262                 {
2263                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2264                                    "interface address for the group");
2265                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2266                 }
2267                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2268                           ETH_ALEN);
2269         }
2270
2271 accept_inv:
2272         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2273             wpa_s->assoc_freq) {
2274                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2275                            "the channel we are already using");
2276                 *force_freq = wpa_s->assoc_freq;
2277         }
2278
2279         res = wpa_drv_shared_freq(wpa_s);
2280         if (res > 0) {
2281                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2282                            "with the channel we are already using on a "
2283                            "shared interface");
2284                 *force_freq = res;
2285         }
2286
2287         return P2P_SC_SUCCESS;
2288 }
2289
2290
2291 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2292                                      const u8 *ssid, size_t ssid_len,
2293                                      const u8 *go_dev_addr, u8 status,
2294                                      int op_freq)
2295 {
2296         struct wpa_supplicant *wpa_s = ctx;
2297         struct wpa_ssid *s;
2298
2299         for (s = wpa_s->conf->ssid; s; s = s->next) {
2300                 if (s->disabled == 2 &&
2301                     s->ssid_len == ssid_len &&
2302                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2303                         break;
2304         }
2305
2306         if (status == P2P_SC_SUCCESS) {
2307                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2308                            " was accepted; op_freq=%d MHz",
2309                            MAC2STR(sa), op_freq);
2310                 if (s) {
2311                         wpas_p2p_group_add_persistent(
2312                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
2313                 } else if (bssid) {
2314                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2315                                       wpa_s->p2p_wps_method, 0);
2316                 }
2317                 return;
2318         }
2319
2320         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2321                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2322                            " was rejected (status %u)", MAC2STR(sa), status);
2323                 return;
2324         }
2325
2326         if (!s) {
2327                 if (bssid) {
2328                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2329                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2330                                 " bssid=" MACSTR " unknown-network",
2331                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2332                                 MAC2STR(bssid));
2333                 } else {
2334                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2335                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2336                                 " unknown-network",
2337                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2338                 }
2339                 return;
2340         }
2341
2342         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2343                 " persistent=%d", MAC2STR(sa), s->id);
2344 }
2345
2346
2347 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2348 {
2349         struct wpa_supplicant *wpa_s = ctx;
2350         struct wpa_ssid *ssid;
2351
2352         if (bssid) {
2353                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2354                         "status=%d " MACSTR,
2355                         status, MAC2STR(bssid));
2356         } else {
2357                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2358                         "status=%d ", status);
2359         }
2360         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2361
2362         if (wpa_s->pending_invite_ssid_id == -1)
2363                 return; /* Invitation to active group */
2364
2365         if (status != P2P_SC_SUCCESS) {
2366                 wpas_p2p_remove_pending_group_interface(wpa_s);
2367                 return;
2368         }
2369
2370         ssid = wpa_config_get_network(wpa_s->conf,
2371                                       wpa_s->pending_invite_ssid_id);
2372         if (ssid == NULL) {
2373                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2374                            "data matching with invitation");
2375                 return;
2376         }
2377
2378         wpas_p2p_group_add_persistent(wpa_s, ssid,
2379                                       ssid->mode == WPAS_MODE_P2P_GO,
2380                                       wpa_s->p2p_persistent_go_freq,
2381                                       wpa_s->p2p_go_ht40);
2382 }
2383
2384
2385 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2386                                     unsigned int freq)
2387 {
2388         unsigned int i;
2389
2390         if (global->p2p_disallow_freq == NULL)
2391                 return 0;
2392
2393         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2394                 if (freq >= global->p2p_disallow_freq[i].min &&
2395                     freq <= global->p2p_disallow_freq[i].max)
2396                         return 1;
2397         }
2398
2399         return 0;
2400 }
2401
2402
2403 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2404 {
2405         reg->channel[reg->channels] = chan;
2406         reg->channels++;
2407 }
2408
2409
2410 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2411                                      struct p2p_channels *chan)
2412 {
2413         int i, cla = 0;
2414
2415         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2416                    "band");
2417
2418         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2419         chan->reg_class[cla].reg_class = 81;
2420         chan->reg_class[cla].channels = 0;
2421         for (i = 0; i < 11; i++) {
2422                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2423                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2424         }
2425         if (chan->reg_class[cla].channels)
2426                 cla++;
2427
2428         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2429                    "band");
2430
2431         /* Operating class 115 - 5 GHz, channels 36-48 */
2432         chan->reg_class[cla].reg_class = 115;
2433         chan->reg_class[cla].channels = 0;
2434         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2435                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2436         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2437                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2438         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2439                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2440         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2441                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2442         if (chan->reg_class[cla].channels)
2443                 cla++;
2444
2445         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2446                    "band");
2447
2448         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2449         chan->reg_class[cla].reg_class = 124;
2450         chan->reg_class[cla].channels = 0;
2451         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2452                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2453         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2454                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2455         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2456                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2457         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2458                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2459         if (chan->reg_class[cla].channels)
2460                 cla++;
2461
2462         chan->reg_classes = cla;
2463         return 0;
2464 }
2465
2466
2467 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2468                                           u16 num_modes,
2469                                           enum hostapd_hw_mode mode)
2470 {
2471         u16 i;
2472
2473         for (i = 0; i < num_modes; i++) {
2474                 if (modes[i].mode == mode)
2475                         return &modes[i];
2476         }
2477
2478         return NULL;
2479 }
2480
2481
2482 static int has_channel(struct wpa_global *global,
2483                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2484 {
2485         int i;
2486         unsigned int freq;
2487
2488         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2489                 chan * 5;
2490         if (wpas_p2p_disallowed_freq(global, freq))
2491                 return 0;
2492
2493         for (i = 0; i < mode->num_channels; i++) {
2494                 if (mode->channels[i].chan == chan) {
2495                         if (flags)
2496                                 *flags = mode->channels[i].flag;
2497                         return !(mode->channels[i].flag &
2498                                  (HOSTAPD_CHAN_DISABLED |
2499                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2500                                   HOSTAPD_CHAN_NO_IBSS |
2501                                   HOSTAPD_CHAN_RADAR));
2502                 }
2503         }
2504
2505         return 0;
2506 }
2507
2508
2509 struct p2p_oper_class_map {
2510         enum hostapd_hw_mode mode;
2511         u8 op_class;
2512         u8 min_chan;
2513         u8 max_chan;
2514         u8 inc;
2515         enum { BW20, BW40PLUS, BW40MINUS } bw;
2516 };
2517
2518 static struct p2p_oper_class_map op_class[] = {
2519         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2520         { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2521 #if 0 /* Do not enable HT40 on 2 GHz for now */
2522         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2523         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2524 #endif
2525         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2526         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2527         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2528         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2529         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2530         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2531         { -1, 0, 0, 0, 0, BW20 }
2532 };
2533
2534
2535 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2536                                    struct hostapd_hw_modes *mode,
2537                                    u8 channel, u8 bw)
2538 {
2539         int flag;
2540
2541         if (!has_channel(wpa_s->global, mode, channel, &flag))
2542                 return -1;
2543         if (bw == BW40MINUS &&
2544             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2545              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2546                 return 0;
2547         if (bw == BW40PLUS &&
2548             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2549              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2550                 return 0;
2551         return 1;
2552 }
2553
2554
2555 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2556                                    struct p2p_channels *chan)
2557 {
2558         struct hostapd_hw_modes *mode;
2559         int cla, op;
2560
2561         if (wpa_s->hw.modes == NULL) {
2562                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2563                            "of all supported channels; assume dualband "
2564                            "support");
2565                 return wpas_p2p_default_channels(wpa_s, chan);
2566         }
2567
2568         cla = 0;
2569
2570         for (op = 0; op_class[op].op_class; op++) {
2571                 struct p2p_oper_class_map *o = &op_class[op];
2572                 u8 ch;
2573                 struct p2p_reg_class *reg = NULL;
2574
2575                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2576                 if (mode == NULL)
2577                         continue;
2578                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2579                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2580                                 continue;
2581                         if (reg == NULL) {
2582                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2583                                            "class %u", o->op_class);
2584                                 reg = &chan->reg_class[cla];
2585                                 cla++;
2586                                 reg->reg_class = o->op_class;
2587                         }
2588                         reg->channel[reg->channels] = ch;
2589                         reg->channels++;
2590                 }
2591                 if (reg) {
2592                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2593                                     reg->channel, reg->channels);
2594                 }
2595         }
2596
2597         chan->reg_classes = cla;
2598
2599         return 0;
2600 }
2601
2602
2603 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2604                            struct hostapd_hw_modes *mode, u8 channel)
2605 {
2606         int op, ret;
2607
2608         for (op = 0; op_class[op].op_class; op++) {
2609                 struct p2p_oper_class_map *o = &op_class[op];
2610                 u8 ch;
2611
2612                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2613                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2614                             o->bw == BW20 || ch != channel)
2615                                 continue;
2616                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2617                         if (ret < 0)
2618                                 continue;
2619                         else if (ret > 0)
2620                                 return (o->bw == BW40MINUS) ? -1 : 1;
2621                         else
2622                                 return 0;
2623                 }
2624         }
2625         return 0;
2626 }
2627
2628
2629 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2630                         size_t buf_len)
2631 {
2632         struct wpa_supplicant *wpa_s = ctx;
2633
2634         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2635                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2636                         break;
2637         }
2638         if (wpa_s == NULL)
2639                 return -1;
2640
2641         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2642 }
2643
2644
2645 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2646 {
2647         struct wpa_supplicant *wpa_s = ctx;
2648
2649         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2650                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2651                 if (ssid == NULL)
2652                         continue;
2653                 if (ssid->mode != WPAS_MODE_INFRA)
2654                         continue;
2655                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2656                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2657                         continue;
2658                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2659                         return 1;
2660         }
2661
2662         return 0;
2663 }
2664
2665
2666 /**
2667  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2668  * @global: Pointer to global data from wpa_supplicant_init()
2669  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2670  * Returns: 0 on success, -1 on failure
2671  */
2672 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2673 {
2674         struct p2p_config p2p;
2675         unsigned int r;
2676         int i;
2677
2678         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2679                 return 0;
2680
2681         if (global->p2p)
2682                 return 0;
2683
2684         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2685                 struct p2p_params params;
2686
2687                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2688                 os_memset(&params, 0, sizeof(params));
2689                 params.dev_name = wpa_s->conf->device_name;
2690                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2691                           WPS_DEV_TYPE_LEN);
2692                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2693                 os_memcpy(params.sec_dev_type,
2694                           wpa_s->conf->sec_device_type,
2695                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2696
2697                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2698                         return -1;
2699
2700                 return 0;
2701         }
2702
2703         os_memset(&p2p, 0, sizeof(p2p));
2704         p2p.msg_ctx = wpa_s;
2705         p2p.cb_ctx = wpa_s;
2706         p2p.p2p_scan = wpas_p2p_scan;
2707         p2p.send_action = wpas_send_action;
2708         p2p.send_action_done = wpas_send_action_done;
2709         p2p.go_neg_completed = wpas_go_neg_completed;
2710         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2711         p2p.dev_found = wpas_dev_found;
2712         p2p.dev_lost = wpas_dev_lost;
2713         p2p.start_listen = wpas_start_listen;
2714         p2p.stop_listen = wpas_stop_listen;
2715         p2p.send_probe_resp = wpas_send_probe_resp;
2716         p2p.sd_request = wpas_sd_request;
2717         p2p.sd_response = wpas_sd_response;
2718         p2p.prov_disc_req = wpas_prov_disc_req;
2719         p2p.prov_disc_resp = wpas_prov_disc_resp;
2720         p2p.prov_disc_fail = wpas_prov_disc_fail;
2721         p2p.invitation_process = wpas_invitation_process;
2722         p2p.invitation_received = wpas_invitation_received;
2723         p2p.invitation_result = wpas_invitation_result;
2724         p2p.get_noa = wpas_get_noa;
2725         p2p.go_connected = wpas_go_connected;
2726
2727         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2728         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2729         p2p.dev_name = wpa_s->conf->device_name;
2730         p2p.manufacturer = wpa_s->conf->manufacturer;
2731         p2p.model_name = wpa_s->conf->model_name;
2732         p2p.model_number = wpa_s->conf->model_number;
2733         p2p.serial_number = wpa_s->conf->serial_number;
2734         if (wpa_s->wps) {
2735                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2736                 p2p.config_methods = wpa_s->wps->config_methods;
2737         }
2738
2739         if (wpa_s->conf->p2p_listen_reg_class &&
2740             wpa_s->conf->p2p_listen_channel) {
2741                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2742                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2743         } else {
2744                 p2p.reg_class = 81;
2745                 /*
2746                  * Pick one of the social channels randomly as the listen
2747                  * channel.
2748                  */
2749                 os_get_random((u8 *) &r, sizeof(r));
2750                 p2p.channel = 1 + (r % 3) * 5;
2751         }
2752         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2753
2754         if (wpa_s->conf->p2p_oper_reg_class &&
2755             wpa_s->conf->p2p_oper_channel) {
2756                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2757                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2758                 p2p.cfg_op_channel = 1;
2759                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2760                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2761
2762         } else {
2763                 p2p.op_reg_class = 81;
2764                 /*
2765                  * Use random operation channel from (1, 6, 11) if no other
2766                  * preference is indicated.
2767                  */
2768                 os_get_random((u8 *) &r, sizeof(r));
2769                 p2p.op_channel = 1 + (r % 3) * 5;
2770                 p2p.cfg_op_channel = 0;
2771                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2772                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2773         }
2774         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2775                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2776                 p2p.country[2] = 0x04;
2777         } else
2778                 os_memcpy(p2p.country, "XX\x04", 3);
2779
2780         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2781                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2782                            "channel list");
2783                 return -1;
2784         }
2785
2786         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2787                   WPS_DEV_TYPE_LEN);
2788
2789         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2790         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2791                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2792
2793         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2794                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2795
2796         p2p.max_peers = 100;
2797
2798         if (wpa_s->conf->p2p_ssid_postfix) {
2799                 p2p.ssid_postfix_len =
2800                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2801                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2802                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2803                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2804                           p2p.ssid_postfix_len);
2805         }
2806
2807         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2808
2809 #ifdef ANDROID_P2P
2810         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
2811                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2812         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)
2813                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2814 #endif
2815
2816         global->p2p = p2p_init(&p2p);
2817         if (global->p2p == NULL)
2818                 return -1;
2819         global->p2p_init_wpa_s = wpa_s;
2820
2821         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2822                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2823                         continue;
2824                 p2p_add_wps_vendor_extension(
2825                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2826         }
2827
2828         return 0;
2829 }
2830
2831
2832 /**
2833  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2834  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2835  *
2836  * This function deinitialize per-interface P2P data.
2837  */
2838 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2839 {
2840         if (wpa_s->driver && wpa_s->drv_priv)
2841                 wpa_drv_probe_req_report(wpa_s, 0);
2842
2843         if (wpa_s->go_params) {
2844                 /* Clear any stored provisioning info */
2845                 p2p_clear_provisioning_info(
2846                         wpa_s->global->p2p,
2847                         wpa_s->go_params->peer_device_addr);
2848         }
2849
2850         os_free(wpa_s->go_params);
2851         wpa_s->go_params = NULL;
2852         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2853         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2854         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2855         wpa_s->p2p_long_listen = 0;
2856         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2857         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2858         wpas_p2p_remove_pending_group_interface(wpa_s);
2859
2860         /* TODO: remove group interface from the driver if this wpa_s instance
2861          * is on top of a P2P group interface */
2862 }
2863
2864
2865 /**
2866  * wpas_p2p_deinit_global - Deinitialize global P2P module
2867  * @global: Pointer to global data from wpa_supplicant_init()
2868  *
2869  * This function deinitializes the global (per device) P2P module.
2870  */
2871 void wpas_p2p_deinit_global(struct wpa_global *global)
2872 {
2873         struct wpa_supplicant *wpa_s, *tmp;
2874
2875         wpa_s = global->ifaces;
2876         if (wpa_s)
2877                 wpas_p2p_service_flush(wpa_s);
2878
2879         if (global->p2p == NULL)
2880                 return;
2881
2882         /* Remove remaining P2P group interfaces */
2883         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2884                 wpa_s = wpa_s->next;
2885         while (wpa_s) {
2886                 tmp = global->ifaces;
2887                 while (tmp &&
2888                        (tmp == wpa_s ||
2889                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2890                         tmp = tmp->next;
2891                 }
2892                 if (tmp == NULL)
2893                         break;
2894                 /* Disconnect from the P2P group and deinit the interface */
2895                 wpas_p2p_disconnect(tmp);
2896         }
2897
2898         /*
2899          * Deinit GO data on any possibly remaining interface (if main
2900          * interface is used as GO).
2901          */
2902         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2903                 if (wpa_s->ap_iface)
2904                         wpas_p2p_group_deinit(wpa_s);
2905         }
2906
2907         p2p_deinit(global->p2p);
2908         global->p2p = NULL;
2909         global->p2p_init_wpa_s = NULL;
2910 }
2911
2912
2913 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2914 {
2915         if (wpa_s->drv_flags &
2916             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2917              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2918                 return 1; /* P2P group requires a new interface in every case
2919                            */
2920         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2921                 return 0; /* driver does not support concurrent operations */
2922         if (wpa_s->global->ifaces->next)
2923                 return 1; /* more that one interface already in use */
2924         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2925                 return 1; /* this interface is already in use */
2926         return 0;
2927 }
2928
2929
2930 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2931                                  const u8 *peer_addr,
2932                                  enum p2p_wps_method wps_method,
2933                                  int go_intent, const u8 *own_interface_addr,
2934                                  unsigned int force_freq, int persistent_group,
2935                                  struct wpa_ssid *ssid)
2936 {
2937         if (persistent_group && wpa_s->conf->persistent_reconnect)
2938                 persistent_group = 2;
2939
2940         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2941                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2942                                            go_intent, own_interface_addr,
2943                                            force_freq, persistent_group);
2944         }
2945
2946         /*
2947          * Increase GO config timeout if HT40 is used since it takes some time
2948          * to scan channels for coex purposes before the BSS can be started.
2949          */
2950         p2p_set_config_timeout(wpa_s->global->p2p,
2951                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2952
2953         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2954                            go_intent, own_interface_addr, force_freq,
2955                            persistent_group, ssid ? ssid->ssid : NULL,
2956                            ssid ? ssid->ssid_len : 0,
2957                            wpa_s->p2p_pd_before_go_neg);
2958 }
2959
2960
2961 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2962                                 const u8 *peer_addr,
2963                                 enum p2p_wps_method wps_method,
2964                                 int go_intent, const u8 *own_interface_addr,
2965                                 unsigned int force_freq, int persistent_group,
2966                                 struct wpa_ssid *ssid)
2967 {
2968         if (persistent_group && wpa_s->conf->persistent_reconnect)
2969                 persistent_group = 2;
2970
2971         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2972                 return -1;
2973
2974         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2975                              go_intent, own_interface_addr, force_freq,
2976                              persistent_group, ssid ? ssid->ssid : NULL,
2977                              ssid ? ssid->ssid_len : 0);
2978 }
2979
2980
2981 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2982 {
2983         wpa_s->p2p_join_scan_count++;
2984         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2985                    wpa_s->p2p_join_scan_count);
2986         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2987                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2988                            " for join operationg - stop join attempt",
2989                            MAC2STR(wpa_s->pending_join_iface_addr));
2990                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2991                 if (wpa_s->p2p_auto_pd) {
2992                         wpa_s->p2p_auto_pd = 0;
2993                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2994                                 " p2p_dev_addr=" MACSTR " status=N/A",
2995                                 MAC2STR(wpa_s->pending_join_dev_addr));
2996                         return;
2997                 }
2998                 wpa_msg(wpa_s->parent, MSG_INFO,
2999                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3000         }
3001 }
3002
3003
3004 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3005 {
3006         struct wpa_supplicant *wpa_s = eloop_ctx;
3007         if (!wpa_s->pending_pd_before_join)
3008                 return;
3009         /*
3010          * Provision Discovery Response may have been lost - try to connect
3011          * anyway since we do not need any information from this PD.
3012          */
3013         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3014                    "try to connect anyway");
3015         wpas_p2p_join_start(wpa_s);
3016 }
3017
3018
3019 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3020 {
3021         struct wpa_supplicant *iface;
3022         int shared_freq;
3023         u8 bssid[ETH_ALEN];
3024
3025         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3026                 return 0;
3027
3028         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3029                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3030                         continue;
3031                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3032                         continue;
3033                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3034                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3035                         shared_freq = iface->current_ssid->frequency;
3036                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3037                         shared_freq = iface->assoc_freq;
3038                 else
3039                         shared_freq = 0;
3040
3041                 if (shared_freq && freq != shared_freq) {
3042                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3043                                    "connected on %d MHz - new connection on "
3044                                    "%d MHz", iface->ifname, shared_freq, freq);
3045                         return 1;
3046                 }
3047         }
3048
3049         shared_freq = wpa_drv_shared_freq(wpa_s);
3050         if (shared_freq > 0 && shared_freq != freq) {
3051                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3052                            "virtual interface connected on %d MHz - new "
3053                            "connection on %d MHz", shared_freq, freq);
3054                 return 1;
3055         }
3056
3057         return 0;
3058 }
3059
3060
3061 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3062                             const u8 *peer_dev_addr)
3063 {
3064         struct wpa_bss *bss;
3065         int updated;
3066
3067         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3068         if (bss == NULL)
3069                 return -1;
3070         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3071                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3072                            "last scan");
3073                 return 0;
3074         }
3075
3076         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3077         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3078                    "%ld.%06ld (%supdated in last scan)",
3079                    bss->last_update.sec, bss->last_update.usec,
3080                    updated ? "": "not ");
3081
3082         return updated;
3083 }
3084
3085
3086 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3087                                    struct wpa_scan_results *scan_res)
3088 {
3089         struct wpa_bss *bss;
3090         int freq;
3091         u8 iface_addr[ETH_ALEN];
3092
3093         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3094
3095         if (wpa_s->global->p2p_disabled)
3096                 return;
3097
3098         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3099                    scan_res ? (int) scan_res->num : -1,
3100                    wpa_s->p2p_auto_join ? "auto_" : "");
3101
3102         if (scan_res)
3103                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3104
3105         if (wpa_s->p2p_auto_pd) {
3106                 int join = wpas_p2p_peer_go(wpa_s,
3107                                             wpa_s->pending_join_dev_addr);
3108                 if (join == 0 &&
3109                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3110                         wpa_s->auto_pd_scan_retry++;
3111                         bss = wpa_bss_get_bssid(wpa_s,
3112                                                 wpa_s->pending_join_dev_addr);
3113                         if (bss) {
3114                                 freq = bss->freq;
3115                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3116                                            "the peer " MACSTR " at %d MHz",
3117                                            wpa_s->auto_pd_scan_retry,
3118                                            MAC2STR(wpa_s->
3119                                                    pending_join_dev_addr),
3120                                            freq);
3121                                 wpas_p2p_join_scan_req(wpa_s, freq);
3122                                 return;
3123                         }
3124                 }
3125
3126                 if (join < 0)
3127                         join = 0;
3128
3129                 wpa_s->p2p_auto_pd = 0;
3130                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3131                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3132                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3133                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3134                                       wpa_s->pending_join_dev_addr,
3135                                       wpa_s->pending_pd_config_methods, join,
3136                                       0) < 0) {
3137                         wpa_s->p2p_auto_pd = 0;
3138                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3139                                 " p2p_dev_addr=" MACSTR " status=N/A",
3140                                 MAC2STR(wpa_s->pending_join_dev_addr));
3141                 }
3142                 return;
3143         }
3144
3145         if (wpa_s->p2p_auto_join) {
3146                 int join = wpas_p2p_peer_go(wpa_s,
3147                                             wpa_s->pending_join_dev_addr);
3148                 if (join < 0) {
3149                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3150                                    "running a GO -> use GO Negotiation");
3151                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3152                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3153                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3154                                          wpa_s->p2p_go_intent,
3155                                          wpa_s->p2p_connect_freq,
3156                                          wpa_s->p2p_persistent_id,
3157                                          wpa_s->p2p_pd_before_go_neg,
3158                                          wpa_s->p2p_go_ht40);
3159                         return;
3160                 }
3161
3162                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3163                            "try to join the group", join ? "" :
3164                            " in older scan");
3165                 if (!join)
3166                         wpa_s->p2p_fallback_to_go_neg = 1;
3167         }
3168
3169         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3170                                  wpa_s->pending_join_iface_addr);
3171         if (freq < 0 &&
3172             p2p_get_interface_addr(wpa_s->global->p2p,
3173                                    wpa_s->pending_join_dev_addr,
3174                                    iface_addr) == 0 &&
3175             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3176         {
3177                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3178                            "address for join from " MACSTR " to " MACSTR
3179                            " based on newly discovered P2P peer entry",
3180                            MAC2STR(wpa_s->pending_join_iface_addr),
3181                            MAC2STR(iface_addr));
3182                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3183                           ETH_ALEN);
3184
3185                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3186                                          wpa_s->pending_join_iface_addr);
3187         }
3188         if (freq >= 0) {
3189                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3190                            "from P2P peer table: %d MHz", freq);
3191         }
3192         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3193         if (bss) {
3194                 freq = bss->freq;
3195                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3196                            "from BSS table: %d MHz", freq);
3197         }
3198         if (freq > 0) {
3199                 u16 method;
3200
3201                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3202                         wpa_msg(wpa_s->parent, MSG_INFO,
3203                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3204                                 "reason=FREQ_CONFLICT");
3205                         return;
3206                 }
3207
3208                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3209                            "prior to joining an existing group (GO " MACSTR
3210                            " freq=%u MHz)",
3211                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3212                 wpa_s->pending_pd_before_join = 1;
3213
3214                 switch (wpa_s->pending_join_wps_method) {
3215                 case WPS_PIN_DISPLAY:
3216                         method = WPS_CONFIG_KEYPAD;
3217                         break;
3218                 case WPS_PIN_KEYPAD:
3219                         method = WPS_CONFIG_DISPLAY;
3220                         break;
3221                 case WPS_PBC:
3222                         method = WPS_CONFIG_PUSHBUTTON;
3223                         break;
3224                 default:
3225                         method = 0;
3226                         break;
3227                 }
3228
3229                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3230                                                wpa_s->pending_join_dev_addr) ==
3231                      method)) {
3232                         /*
3233                          * We have already performed provision discovery for
3234                          * joining the group. Proceed directly to join
3235                          * operation without duplicated provision discovery. */
3236                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3237                                    "with " MACSTR " already done - proceed to "
3238                                    "join",
3239                                    MAC2STR(wpa_s->pending_join_dev_addr));
3240                         wpa_s->pending_pd_before_join = 0;
3241                         goto start;
3242                 }
3243
3244                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3245                                       wpa_s->pending_join_dev_addr, method, 1,
3246                                       freq) < 0) {
3247                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3248                                    "Discovery Request before joining an "
3249                                    "existing group");
3250                         wpa_s->pending_pd_before_join = 0;
3251                         goto start;
3252                 }
3253
3254                 /*
3255                  * Actual join operation will be started from the Action frame
3256                  * TX status callback (if no ACK is received) or when the
3257                  * Provision Discovery Response is received. Use a short
3258                  * timeout as a backup mechanism should the Provision Discovery
3259                  * Response be lost for any reason.
3260                  */
3261                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3262                                      NULL);
3263                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3264                                        wpa_s, NULL);
3265                 return;
3266         }
3267
3268         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3269         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3270         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3271         wpas_p2p_check_join_scan_limit(wpa_s);
3272         return;
3273
3274 start:
3275         /* Start join operation immediately */
3276         wpas_p2p_join_start(wpa_s);
3277 }
3278
3279
3280 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3281 {
3282         int ret;
3283         struct wpa_driver_scan_params params;
3284         struct wpabuf *wps_ie, *ies;
3285         size_t ielen;
3286         int freqs[2] = { 0, 0 };
3287 #ifdef ANDROID_P2P
3288         int oper_freq;
3289
3290         /* If freq is not provided, check the operating freq of the GO and do a
3291          * a directed scan to save time
3292          */
3293         if(!freq) {
3294                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3295                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3296         }
3297 #endif
3298         os_memset(&params, 0, sizeof(params));
3299
3300         /* P2P Wildcard SSID */
3301         params.num_ssids = 1;
3302         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3303         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3304
3305         wpa_s->wps->dev.p2p = 1;
3306         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3307                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3308                                         NULL);
3309         if (wps_ie == NULL) {
3310                 wpas_p2p_scan_res_join(wpa_s, NULL);
3311                 return;
3312         }
3313
3314         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3315         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3316         if (ies == NULL) {
3317                 wpabuf_free(wps_ie);
3318                 wpas_p2p_scan_res_join(wpa_s, NULL);
3319                 return;
3320         }
3321         wpabuf_put_buf(ies, wps_ie);
3322         wpabuf_free(wps_ie);
3323
3324         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3325
3326         params.p2p_probe = 1;
3327         params.extra_ies = wpabuf_head(ies);
3328         params.extra_ies_len = wpabuf_len(ies);
3329         if (freq > 0) {
3330                 freqs[0] = freq;
3331                 params.freqs = freqs;
3332         }
3333
3334         /*
3335          * Run a scan to update BSS table and start Provision Discovery once
3336          * the new scan results become available.
3337          */
3338         ret = wpa_drv_scan(wpa_s, &params);
3339         if (!ret)
3340                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3341
3342         wpabuf_free(ies);
3343
3344         if (ret) {
3345                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3346                            "try again later");
3347                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3348                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3349                 wpas_p2p_check_join_scan_limit(wpa_s);
3350         }
3351 }
3352
3353
3354 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3355 {
3356         struct wpa_supplicant *wpa_s = eloop_ctx;
3357         wpas_p2p_join_scan_req(wpa_s, 0);
3358 }
3359
3360
3361 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3362                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3363                          int auto_join)
3364 {
3365         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3366                    MACSTR " dev " MACSTR ")%s",
3367                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3368                    auto_join ? " (auto_join)" : "");
3369
3370         wpa_s->p2p_auto_pd = 0;
3371         wpa_s->p2p_auto_join = !!auto_join;
3372         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3373         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3374         wpa_s->pending_join_wps_method = wps_method;
3375
3376         /* Make sure we are not running find during connection establishment */
3377         wpas_p2p_stop_find(wpa_s);
3378
3379         wpa_s->p2p_join_scan_count = 0;
3380         wpas_p2p_join_scan(wpa_s, NULL);
3381         return 0;
3382 }
3383
3384
3385 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3386 {
3387         struct wpa_supplicant *group;
3388         struct p2p_go_neg_results res;
3389         struct wpa_bss *bss;
3390
3391         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3392         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3393         if (group == NULL)
3394                 return -1;
3395         if (group != wpa_s) {
3396                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3397                           sizeof(group->p2p_pin));
3398                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3399         }
3400
3401         group->p2p_in_provisioning = 1;
3402         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3403
3404         os_memset(&res, 0, sizeof(res));
3405         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3406                   ETH_ALEN);
3407         res.wps_method = wpa_s->pending_join_wps_method;
3408         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3409         if (bss) {
3410                 res.freq = bss->freq;
3411                 res.ssid_len = bss->ssid_len;
3412                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3413         }
3414
3415         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3416                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3417                            "starting client");
3418                 wpa_drv_cancel_remain_on_channel(wpa_s);
3419                 wpa_s->off_channel_freq = 0;
3420                 wpa_s->roc_waiting_drv_freq = 0;
3421         }
3422         wpas_start_wps_enrollee(group, &res);
3423
3424         /*
3425          * Allow a longer timeout for join-a-running-group than normal 15
3426          * second group formation timeout since the GO may not have authorized
3427          * our connection yet.
3428          */
3429         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3430         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3431                                wpa_s, NULL);
3432
3433         return 0;
3434 }
3435
3436
3437 /**
3438  * wpas_p2p_connect - Request P2P Group Formation to be started
3439  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3440  * @peer_addr: Address of the peer P2P Device
3441  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3442  * @persistent_group: Whether to create a persistent group
3443  * @auto_join: Whether to select join vs. GO Negotiation automatically
3444  * @join: Whether to join an existing group (as a client) instead of starting
3445  *      Group Owner negotiation; @peer_addr is BSSID in that case
3446  * @auth: Whether to only authorize the connection instead of doing that and
3447  *      initiating Group Owner negotiation
3448  * @go_intent: GO Intent or -1 to use default
3449  * @freq: Frequency for the group or 0 for auto-selection
3450  * @persistent_id: Persistent group credentials to use for forcing GO
3451  *      parameters or -1 to generate new values (SSID/passphrase)
3452  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3453  *      interoperability workaround when initiating group formation
3454  * @ht40: Start GO with 40 MHz channel width
3455  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3456  *      failure, -2 on failure due to channel not currently available,
3457  *      -3 if forced channel is not supported
3458  */
3459 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3460                      const char *pin, enum p2p_wps_method wps_method,
3461                      int persistent_group, int auto_join, int join, int auth,
3462                      int go_intent, int freq, int persistent_id, int pd,
3463                      int ht40)
3464 {
3465         int force_freq = 0, oper_freq = 0;
3466         u8 bssid[ETH_ALEN];
3467         int ret = 0;
3468         enum wpa_driver_if_type iftype;
3469         const u8 *if_addr;
3470         struct wpa_ssid *ssid = NULL;
3471
3472         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3473                 return -1;
3474
3475         if (persistent_id >= 0) {
3476                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3477                 if (ssid == NULL || ssid->disabled != 2 ||
3478                     ssid->mode != WPAS_MODE_P2P_GO)
3479                         return -1;
3480         }
3481
3482         if (go_intent < 0)
3483                 go_intent = wpa_s->conf->p2p_go_intent;
3484
3485         if (!auth)
3486                 wpa_s->p2p_long_listen = 0;
3487
3488         wpa_s->p2p_wps_method = wps_method;
3489         wpa_s->p2p_persistent_group = !!persistent_group;
3490         wpa_s->p2p_persistent_id = persistent_id;
3491         wpa_s->p2p_go_intent = go_intent;
3492         wpa_s->p2p_connect_freq = freq;
3493         wpa_s->p2p_fallback_to_go_neg = 0;
3494         wpa_s->p2p_pd_before_go_neg = !!pd;
3495         wpa_s->p2p_go_ht40 = !!ht40;
3496
3497         if (pin)
3498                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3499         else if (wps_method == WPS_PIN_DISPLAY) {
3500                 ret = wps_generate_pin();
3501                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3502                             ret);
3503                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3504                            wpa_s->p2p_pin);
3505         } else
3506                 wpa_s->p2p_pin[0] = '\0';
3507
3508         if (join || auto_join) {
3509                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3510                 if (auth) {
3511                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3512                                    "connect a running group from " MACSTR,
3513                                    MAC2STR(peer_addr));
3514                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3515                         return ret;
3516                 }
3517                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3518                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3519                                            iface_addr) < 0) {
3520                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3521                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3522                                          dev_addr);
3523                 }
3524                 if (auto_join) {
3525                         os_get_time(&wpa_s->p2p_auto_started);
3526                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3527                                    "%ld.%06ld",
3528                                    wpa_s->p2p_auto_started.sec,
3529                                    wpa_s->p2p_auto_started.usec);
3530                 }
3531                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3532                                   auto_join) < 0)
3533                         return -1;
3534                 return ret;
3535         }
3536
3537         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3538             wpa_s->assoc_freq)
3539                 oper_freq = wpa_s->assoc_freq;
3540         else {
3541                 oper_freq = wpa_drv_shared_freq(wpa_s);
3542                 if (oper_freq < 0)
3543                         oper_freq = 0;
3544         }
3545
3546         if (freq > 0) {
3547                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3548                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3549                                    "(%u MHz) is not supported for P2P uses",
3550                                    freq);
3551                         return -3;
3552                 }
3553
3554                 if (oper_freq > 0 && freq != oper_freq &&
3555                     !(wpa_s->drv_flags &
3556                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3557                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3558                                    "on %u MHz while connected on another "
3559                                    "channel (%u MHz)", freq, oper_freq);
3560                         return -2;
3561                 }
3562                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3563                            "requested channel (%u MHz)", freq);
3564                 force_freq = freq;
3565         } else if (oper_freq > 0 &&
3566                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3567                 if (!(wpa_s->drv_flags &
3568                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3569                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3570                                    "while connected on non-P2P supported "
3571                                    "channel (%u MHz)", oper_freq);
3572                         return -2;
3573                 }
3574                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3575                            "(%u MHz) not available for P2P - try to use "
3576                            "another channel", oper_freq);
3577                 force_freq = 0;
3578         } else if (oper_freq > 0) {
3579                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3580                            "channel we are already using (%u MHz) on another "
3581                            "interface", oper_freq);
3582                 force_freq = oper_freq;
3583         }
3584
3585         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3586
3587         if (wpa_s->create_p2p_iface) {
3588                 /* Prepare to add a new interface for the group */
3589                 iftype = WPA_IF_P2P_GROUP;
3590                 if (go_intent == 15)
3591                         iftype = WPA_IF_P2P_GO;
3592                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3593                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3594                                    "interface for the group");
3595                         return -1;
3596                 }
3597
3598                 if_addr = wpa_s->pending_interface_addr;
3599         } else
3600                 if_addr = wpa_s->own_addr;
3601
3602         if (auth) {
3603                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3604                                          go_intent, if_addr,
3605                                          force_freq, persistent_group, ssid) <
3606                     0)
3607                         return -1;
3608                 return ret;
3609         }
3610
3611         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3612                                   go_intent, if_addr, force_freq,
3613                                   persistent_group, ssid) < 0) {
3614                 if (wpa_s->create_p2p_iface)
3615                         wpas_p2p_remove_pending_group_interface(wpa_s);
3616                 return -1;
3617         }
3618         return ret;
3619 }
3620
3621
3622 /**
3623  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3624  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3625  * @freq: Frequency of the channel in MHz
3626  * @duration: Duration of the stay on the channel in milliseconds
3627  *
3628  * This callback is called when the driver indicates that it has started the
3629  * requested remain-on-channel duration.
3630  */
3631 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3632                                    unsigned int freq, unsigned int duration)
3633 {
3634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3635                 return;
3636         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3637                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3638                               wpa_s->pending_listen_duration);
3639                 wpa_s->pending_listen_freq = 0;
3640         }
3641 }
3642
3643
3644 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3645                                  unsigned int timeout)
3646 {
3647         /* Limit maximum Listen state time based on driver limitation. */
3648         if (timeout > wpa_s->max_remain_on_chan)
3649                 timeout = wpa_s->max_remain_on_chan;
3650
3651         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3652                 return wpa_drv_p2p_listen(wpa_s, timeout);
3653
3654         return p2p_listen(wpa_s->global->p2p, timeout);
3655 }
3656
3657
3658 /**
3659  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3660  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3661  * @freq: Frequency of the channel in MHz
3662  *
3663  * This callback is called when the driver indicates that a remain-on-channel
3664  * operation has been completed, i.e., the duration on the requested channel
3665  * has timed out.
3666  */
3667 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3668                                           unsigned int freq)
3669 {
3670         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3671                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3672                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3673         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3674                 return;
3675         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3676                 return; /* P2P module started a new operation */
3677         if (wpa_s->pending_action_tx)
3678                 return;
3679         if (wpa_s->p2p_long_listen > 0)
3680                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3681         if (wpa_s->p2p_long_listen > 0) {
3682                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3683                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3684         }
3685 }
3686
3687
3688 /**
3689  * wpas_p2p_group_remove - Remove a P2P group
3690  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3691  * @ifname: Network interface name of the group interface or "*" to remove all
3692  *      groups
3693  * Returns: 0 on success, -1 on failure
3694  *
3695  * This function is used to remove a P2P group. This can be used to disconnect
3696  * from a group in which the local end is a P2P Client or to end a P2P Group in
3697  * case the local end is the Group Owner. If a virtual network interface was
3698  * created for this group, that interface will be removed. Otherwise, only the
3699  * configured P2P group network will be removed from the interface.
3700  */
3701 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3702 {
3703         struct wpa_global *global = wpa_s->global;
3704
3705         if (os_strcmp(ifname, "*") == 0) {
3706                 struct wpa_supplicant *prev;
3707                 wpa_s = global->ifaces;
3708                 while (wpa_s) {
3709                         prev = wpa_s;
3710                         wpa_s = wpa_s->next;
3711                         wpas_p2p_disconnect(prev);
3712                 }
3713                 return 0;
3714         }
3715
3716         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3717                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3718                         break;
3719         }
3720
3721         return wpas_p2p_disconnect(wpa_s);
3722 }
3723
3724
3725 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3726                                    struct p2p_go_neg_results *params,
3727                                    int freq, int ht40)
3728 {
3729         u8 bssid[ETH_ALEN];
3730         int res;
3731
3732         os_memset(params, 0, sizeof(*params));
3733         params->role_go = 1;
3734         params->ht40 = ht40;
3735         if (freq) {
3736                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3737                            "frequency %d MHz", freq);
3738                 params->freq = freq;
3739         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3740                    wpa_s->conf->p2p_oper_channel >= 1 &&
3741                    wpa_s->conf->p2p_oper_channel <= 11) {
3742                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3743                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3744                            "frequency %d MHz", params->freq);
3745         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3746                    wpa_s->conf->p2p_oper_reg_class == 124) {
3747                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3748                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3749                            "frequency %d MHz", params->freq);
3750         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3751                    wpa_s->best_overall_freq > 0 &&
3752                    p2p_supported_freq(wpa_s->global->p2p,
3753                                       wpa_s->best_overall_freq)) {
3754                 params->freq = wpa_s->best_overall_freq;
3755                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3756                            "channel %d MHz", params->freq);
3757         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3758                    wpa_s->best_24_freq > 0 &&
3759                    p2p_supported_freq(wpa_s->global->p2p,
3760                                       wpa_s->best_24_freq)) {
3761                 params->freq = wpa_s->best_24_freq;
3762                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3763                            "channel %d MHz", params->freq);
3764         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3765                    wpa_s->best_5_freq > 0 &&
3766                    p2p_supported_freq(wpa_s->global->p2p,
3767                                       wpa_s->best_5_freq)) {
3768                 params->freq = wpa_s->best_5_freq;
3769                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3770                            "channel %d MHz", params->freq);
3771         } else {
3772                 int chan;
3773                 for (chan = 0; chan < 11; chan++) {
3774                         params->freq = 2412 + chan * 5;
3775                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3776                                                       params->freq))
3777                                 break;
3778                 }
3779                 if (chan == 11) {
3780                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3781                                    "allowed");
3782                         return -1;
3783                 }
3784                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3785                            "known)", params->freq);
3786         }
3787
3788         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3789             wpa_s->assoc_freq && !freq) {
3790                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3791                            "already using");
3792                 params->freq = wpa_s->assoc_freq;
3793         }
3794
3795         res = wpa_drv_shared_freq(wpa_s);
3796         if (res > 0 && !freq) {
3797                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3798                            "already using on a shared interface");
3799                 params->freq = res;
3800         } else if (res > 0 && freq != res &&
3801                    !(wpa_s->drv_flags &
3802                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3803                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3804                            "while connected on another channel (%u MHz)",
3805                            freq, res);
3806                 return -1;
3807         }
3808
3809         return 0;
3810 }
3811
3812
3813 static struct wpa_supplicant *
3814 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3815                          int go)
3816 {
3817         struct wpa_supplicant *group_wpa_s;
3818
3819         if (!wpas_p2p_create_iface(wpa_s))
3820                 return wpa_s;
3821
3822         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3823                                          WPA_IF_P2P_CLIENT) < 0)
3824                 return NULL;
3825         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3826         if (group_wpa_s == NULL) {
3827                 wpas_p2p_remove_pending_group_interface(wpa_s);
3828                 return NULL;
3829         }
3830
3831         return group_wpa_s;
3832 }
3833
3834
3835 /**
3836  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3837  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3838  * @persistent_group: Whether to create a persistent group
3839  * @freq: Frequency for the group or 0 to indicate no hardcoding
3840  * Returns: 0 on success, -1 on failure
3841  *
3842  * This function creates a new P2P group with the local end as the Group Owner,
3843  * i.e., without using Group Owner Negotiation.
3844  */
3845 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3846                        int freq, int ht40)
3847 {
3848         struct p2p_go_neg_results params;
3849         unsigned int r;
3850
3851         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3852                 return -1;
3853
3854         /* Make sure we are not running find during connection establishment */
3855         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3856         wpas_p2p_stop_find(wpa_s);
3857
3858         if (freq == 2) {
3859                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3860                            "band");
3861                 if (wpa_s->best_24_freq > 0 &&
3862                     p2p_supported_freq(wpa_s->global->p2p,
3863                                        wpa_s->best_24_freq)) {
3864                         freq = wpa_s->best_24_freq;
3865                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3866                                    "channel: %d MHz", freq);
3867                 } else {
3868                         os_get_random((u8 *) &r, sizeof(r));
3869                         freq = 2412 + (r % 3) * 25;
3870                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3871                                    "channel: %d MHz", freq);
3872                 }
3873         }
3874
3875         if (freq == 5) {
3876                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3877                            "band");
3878                 if (wpa_s->best_5_freq > 0 &&
3879                     p2p_supported_freq(wpa_s->global->p2p,
3880                                        wpa_s->best_5_freq)) {
3881                         freq = wpa_s->best_5_freq;
3882                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3883                                    "channel: %d MHz", freq);
3884                 } else {
3885                         os_get_random((u8 *) &r, sizeof(r));
3886                         freq = 5180 + (r % 4) * 20;
3887                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3888                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3889                                            "5 GHz channel for P2P group");
3890                                 return -1;
3891                         }
3892                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3893                                    "channel: %d MHz", freq);
3894                 }
3895         }
3896
3897         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3898                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3899                            "(%u MHz) is not supported for P2P uses",
3900                            freq);
3901                 return -1;
3902         }
3903
3904         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3905                 return -1;
3906         if (params.freq &&
3907             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3908                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3909                            "(%u MHz) is not supported for P2P uses",
3910                            params.freq);
3911                 return -1;
3912         }
3913         p2p_go_params(wpa_s->global->p2p, &params);
3914         params.persistent_group = persistent_group;
3915
3916         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3917         if (wpa_s == NULL)
3918                 return -1;
3919         wpas_start_wps_go(wpa_s, &params, 0);
3920
3921         return 0;
3922 }
3923
3924
3925 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3926                                  struct wpa_ssid *params, int addr_allocated)
3927 {
3928         struct wpa_ssid *ssid;
3929
3930         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3931         if (wpa_s == NULL)
3932                 return -1;
3933
3934         wpa_supplicant_ap_deinit(wpa_s);
3935
3936         ssid = wpa_config_add_network(wpa_s->conf);
3937         if (ssid == NULL)
3938                 return -1;
3939         wpa_config_set_network_defaults(ssid);
3940         ssid->temporary = 1;
3941         ssid->proto = WPA_PROTO_RSN;
3942         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3943         ssid->group_cipher = WPA_CIPHER_CCMP;
3944         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3945         ssid->ssid = os_malloc(params->ssid_len);
3946         if (ssid->ssid == NULL) {
3947                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3948                 return -1;
3949         }
3950         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3951         ssid->ssid_len = params->ssid_len;
3952         ssid->p2p_group = 1;
3953         ssid->export_keys = 1;
3954         if (params->psk_set) {
3955                 os_memcpy(ssid->psk, params->psk, 32);
3956                 ssid->psk_set = 1;
3957         }
3958         if (params->passphrase)
3959                 ssid->passphrase = os_strdup(params->passphrase);
3960
3961         wpa_supplicant_select_network(wpa_s, ssid);
3962
3963         wpa_s->show_group_started = 1;
3964
3965         return 0;
3966 }
3967
3968
3969 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3970                                   struct wpa_ssid *ssid, int addr_allocated,
3971                                   int freq, int ht40)
3972 {
3973         struct p2p_go_neg_results params;
3974         int go = 0;
3975
3976         if (ssid->disabled != 2 || ssid->ssid == NULL)
3977                 return -1;
3978
3979         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3980             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3981                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3982                            "already running");
3983                 return 0;
3984         }
3985
3986         /* Make sure we are not running find during connection establishment */
3987         wpas_p2p_stop_find(wpa_s);
3988
3989         wpa_s->p2p_fallback_to_go_neg = 0;
3990
3991         if (ssid->mode == WPAS_MODE_INFRA)
3992                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3993
3994         if (ssid->mode != WPAS_MODE_P2P_GO)
3995                 return -1;
3996
3997         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3998                 return -1;
3999
4000         params.role_go = 1;
4001         if (ssid->passphrase == NULL ||
4002             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4003                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4004                            "group");
4005                 return -1;
4006         }
4007         os_strlcpy(params.passphrase, ssid->passphrase,
4008                    sizeof(params.passphrase));
4009         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4010         params.ssid_len = ssid->ssid_len;
4011         params.persistent_group = 1;
4012
4013         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4014         if (wpa_s == NULL)
4015                 return -1;
4016
4017         wpas_start_wps_go(wpa_s, &params, 0);
4018
4019         return 0;
4020 }
4021
4022
4023 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4024                                struct wpabuf *proberesp_ies)
4025 {
4026         struct wpa_supplicant *wpa_s = ctx;
4027         if (wpa_s->ap_iface) {
4028                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4029                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4030                         wpabuf_free(beacon_ies);
4031                         wpabuf_free(proberesp_ies);
4032                         return;
4033                 }
4034                 if (beacon_ies) {
4035                         wpabuf_free(hapd->p2p_beacon_ie);
4036                         hapd->p2p_beacon_ie = beacon_ies;
4037                 }
4038                 wpabuf_free(hapd->p2p_probe_resp_ie);
4039                 hapd->p2p_probe_resp_ie = proberesp_ies;
4040         } else {
4041                 wpabuf_free(beacon_ies);
4042                 wpabuf_free(proberesp_ies);
4043         }
4044         wpa_supplicant_ap_update_beacon(wpa_s);
4045 }
4046
4047
4048 static void wpas_p2p_idle_update(void *ctx, int idle)
4049 {
4050         struct wpa_supplicant *wpa_s = ctx;
4051         if (!wpa_s->ap_iface)
4052                 return;
4053         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4054         if (idle)
4055                 wpas_p2p_set_group_idle_timeout(wpa_s);
4056         else
4057                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4058 }
4059
4060
4061 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4062                                        struct wpa_ssid *ssid)
4063 {
4064         struct p2p_group *group;
4065         struct p2p_group_config *cfg;
4066
4067         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4068                 return NULL;
4069         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4070                 return NULL;
4071
4072         cfg = os_zalloc(sizeof(*cfg));
4073         if (cfg == NULL)
4074                 return NULL;
4075
4076         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4077                 cfg->persistent_group = 2;
4078         else if (ssid->p2p_persistent_group)
4079                 cfg->persistent_group = 1;
4080         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4081         if (wpa_s->max_stations &&
4082             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4083                 cfg->max_clients = wpa_s->max_stations;
4084         else
4085                 cfg->max_clients = wpa_s->conf->max_num_sta;
4086         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4087         cfg->ssid_len = ssid->ssid_len;
4088         cfg->cb_ctx = wpa_s;
4089         cfg->ie_update = wpas_p2p_ie_update;
4090         cfg->idle_update = wpas_p2p_idle_update;
4091
4092         group = p2p_group_init(wpa_s->global->p2p, cfg);
4093         if (group == NULL)
4094                 os_free(cfg);
4095         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4096                 p2p_group_notif_formation_done(group);
4097         wpa_s->p2p_group = group;
4098         return group;
4099 }
4100
4101
4102 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4103                           int registrar)
4104 {
4105         struct wpa_ssid *ssid = wpa_s->current_ssid;
4106
4107         if (!wpa_s->p2p_in_provisioning) {
4108                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4109                            "provisioning not in progress");
4110                 return;
4111         }
4112
4113         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4114                 u8 go_dev_addr[ETH_ALEN];
4115                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4116                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4117                                           ssid->ssid_len);
4118                 /* Clear any stored provisioning info */
4119                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4120         }
4121
4122         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4123                              NULL);
4124         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4125                 /*
4126                  * Use a separate timeout for initial data connection to
4127                  * complete to allow the group to be removed automatically if
4128                  * something goes wrong in this step before the P2P group idle
4129                  * timeout mechanism is taken into use.
4130                  */
4131                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4132                                        wpas_p2p_group_formation_timeout,
4133                                        wpa_s->parent, NULL);
4134         }
4135         if (wpa_s->global->p2p)
4136                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4137         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4138                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4139         wpas_group_formation_completed(wpa_s, 1);
4140 }
4141
4142
4143 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4144                          struct wps_event_fail *fail)
4145 {
4146         if (!wpa_s->p2p_in_provisioning) {
4147                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4148                            "provisioning not in progress");
4149                 return;
4150         }
4151
4152         if (wpa_s->go_params) {
4153                 p2p_clear_provisioning_info(
4154                         wpa_s->global->p2p,
4155                         wpa_s->go_params->peer_device_addr);
4156         }
4157
4158         wpas_notify_p2p_wps_failed(wpa_s, fail);
4159 }
4160
4161
4162 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4163                        const char *config_method,
4164                        enum wpas_p2p_prov_disc_use use)
4165 {
4166         u16 config_methods;
4167
4168         wpa_s->p2p_fallback_to_go_neg = 0;
4169         wpa_s->pending_pd_use = NORMAL_PD;
4170         if (os_strncmp(config_method, "display", 7) == 0)
4171                 config_methods = WPS_CONFIG_DISPLAY;
4172         else if (os_strncmp(config_method, "keypad", 6) == 0)
4173                 config_methods = WPS_CONFIG_KEYPAD;
4174         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4175                  os_strncmp(config_method, "pushbutton", 10) == 0)
4176                 config_methods = WPS_CONFIG_PUSHBUTTON;
4177         else {
4178                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4179                 return -1;
4180         }
4181
4182         if (use == WPAS_P2P_PD_AUTO) {
4183                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4184                 wpa_s->pending_pd_config_methods = config_methods;
4185                 wpa_s->p2p_auto_pd = 1;
4186                 wpa_s->p2p_auto_join = 0;
4187                 wpa_s->pending_pd_before_join = 0;
4188                 wpa_s->auto_pd_scan_retry = 0;
4189                 wpas_p2p_stop_find(wpa_s);
4190                 wpa_s->p2p_join_scan_count = 0;
4191                 os_get_time(&wpa_s->p2p_auto_started);
4192                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4193                            wpa_s->p2p_auto_started.sec,
4194                            wpa_s->p2p_auto_started.usec);
4195                 wpas_p2p_join_scan(wpa_s, NULL);
4196                 return 0;
4197         }
4198
4199         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4200                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4201                                                  config_methods,
4202                                                  use == WPAS_P2P_PD_FOR_JOIN);
4203         }
4204
4205         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4206                 return -1;
4207
4208         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4209                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4210                                  0);
4211 }
4212
4213
4214 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4215                               char *end)
4216 {
4217         return p2p_scan_result_text(ies, ies_len, buf, end);
4218 }
4219
4220
4221 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4222 {
4223         if (!wpa_s->pending_action_tx)
4224                 return;
4225
4226         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4227                    "operation request");
4228         wpabuf_free(wpa_s->pending_action_tx);
4229         wpa_s->pending_action_tx = NULL;
4230 }
4231
4232
4233 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4234                   enum p2p_discovery_type type,
4235                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4236                   const u8 *dev_id, unsigned int search_delay)
4237 {
4238         wpas_p2p_clear_pending_action_tx(wpa_s);
4239         wpa_s->p2p_long_listen = 0;
4240
4241         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4242                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4243
4244         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4245             wpa_s->p2p_in_provisioning)
4246                 return -1;
4247
4248         wpa_supplicant_cancel_sched_scan(wpa_s);
4249
4250         return p2p_find(wpa_s->global->p2p, timeout, type,
4251                         num_req_dev_types, req_dev_types, dev_id,
4252                         search_delay);
4253 }
4254
4255
4256 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4257 {
4258         wpas_p2p_clear_pending_action_tx(wpa_s);
4259         wpa_s->p2p_long_listen = 0;
4260         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4261         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4262         wpa_s->global->p2p_cb_on_scan_complete = 0;
4263
4264         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4265                 wpa_drv_p2p_stop_find(wpa_s);
4266                 return;
4267         }
4268
4269         if (wpa_s->global->p2p)
4270                 p2p_stop_find(wpa_s->global->p2p);
4271
4272         wpas_p2p_remove_pending_group_interface(wpa_s);
4273 }
4274
4275
4276 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4277 {
4278         struct wpa_supplicant *wpa_s = eloop_ctx;
4279         wpa_s->p2p_long_listen = 0;
4280 }
4281
4282
4283 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4284 {
4285         int res;
4286
4287         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4288                 return -1;
4289
4290         wpa_supplicant_cancel_sched_scan(wpa_s);
4291         wpas_p2p_clear_pending_action_tx(wpa_s);
4292
4293         if (timeout == 0) {
4294                 /*
4295                  * This is a request for unlimited Listen state. However, at
4296                  * least for now, this is mapped to a Listen state for one
4297                  * hour.
4298                  */
4299                 timeout = 3600;
4300         }
4301         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4302         wpa_s->p2p_long_listen = 0;
4303
4304         /*
4305          * Stop previous find/listen operation to avoid trying to request a new
4306          * remain-on-channel operation while the driver is still running the
4307          * previous one.
4308          */
4309         if (wpa_s->global->p2p)
4310                 p2p_stop_find(wpa_s->global->p2p);
4311
4312         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4313         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4314                 wpa_s->p2p_long_listen = timeout * 1000;
4315                 eloop_register_timeout(timeout, 0,
4316                                        wpas_p2p_long_listen_timeout,
4317                                        wpa_s, NULL);
4318         }
4319
4320         return res;
4321 }
4322
4323
4324 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4325                           u8 *buf, size_t len, int p2p_group)
4326 {
4327         struct wpabuf *p2p_ie;
4328         int ret;
4329
4330         if (wpa_s->global->p2p_disabled)
4331                 return -1;
4332         if (wpa_s->global->p2p == NULL)
4333                 return -1;
4334         if (bss == NULL)
4335                 return -1;
4336
4337         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4338         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4339                                p2p_group, p2p_ie);
4340         wpabuf_free(p2p_ie);
4341
4342         return ret;
4343 }
4344
4345
4346 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4347                           const u8 *dst, const u8 *bssid,
4348                           const u8 *ie, size_t ie_len, int ssi_signal)
4349 {
4350         if (wpa_s->global->p2p_disabled)
4351                 return 0;
4352         if (wpa_s->global->p2p == NULL)
4353                 return 0;
4354
4355         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4356                                  ie, ie_len)) {
4357         case P2P_PREQ_NOT_P2P:
4358                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4359                                  ssi_signal);
4360                 /* fall through */
4361         case P2P_PREQ_MALFORMED:
4362         case P2P_PREQ_NOT_LISTEN:
4363         case P2P_PREQ_NOT_PROCESSED:
4364         default: /* make gcc happy */
4365                 return 0;
4366         case P2P_PREQ_PROCESSED:
4367                 return 1;
4368         }
4369 }
4370
4371
4372 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4373                         const u8 *sa, const u8 *bssid,
4374                         u8 category, const u8 *data, size_t len, int freq)
4375 {
4376         if (wpa_s->global->p2p_disabled)
4377                 return;
4378         if (wpa_s->global->p2p == NULL)
4379                 return;
4380
4381         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4382                       freq);
4383 }
4384
4385
4386 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4387 {
4388         if (wpa_s->global->p2p_disabled)
4389                 return;
4390         if (wpa_s->global->p2p == NULL)
4391                 return;
4392
4393         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4394 }
4395
4396
4397 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4398 {
4399         p2p_group_deinit(wpa_s->p2p_group);
4400         wpa_s->p2p_group = NULL;
4401
4402         wpa_s->ap_configured_cb = NULL;
4403         wpa_s->ap_configured_cb_ctx = NULL;
4404         wpa_s->ap_configured_cb_data = NULL;
4405         wpa_s->connect_without_scan = NULL;
4406 }
4407
4408
4409 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4410 {
4411         wpa_s->p2p_long_listen = 0;
4412
4413         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4414                 return wpa_drv_p2p_reject(wpa_s, addr);
4415
4416         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4417                 return -1;
4418
4419         return p2p_reject(wpa_s->global->p2p, addr);
4420 }
4421
4422
4423 /* Invite to reinvoke a persistent group */
4424 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4425                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4426                     int ht40)
4427 {
4428         enum p2p_invite_role role;
4429         u8 *bssid = NULL;
4430
4431         wpa_s->p2p_persistent_go_freq = freq;
4432         wpa_s->p2p_go_ht40 = !!ht40;
4433         if (ssid->mode == WPAS_MODE_P2P_GO) {
4434                 role = P2P_INVITE_ROLE_GO;
4435                 if (peer_addr == NULL) {
4436                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4437                                    "address in invitation command");
4438                         return -1;
4439                 }
4440                 if (wpas_p2p_create_iface(wpa_s)) {
4441                         if (wpas_p2p_add_group_interface(wpa_s,
4442                                                          WPA_IF_P2P_GO) < 0) {
4443                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4444                                            "allocate a new interface for the "
4445                                            "group");
4446                                 return -1;
4447                         }
4448                         bssid = wpa_s->pending_interface_addr;
4449                 } else
4450                         bssid = wpa_s->own_addr;
4451         } else {
4452                 role = P2P_INVITE_ROLE_CLIENT;
4453                 peer_addr = ssid->bssid;
4454         }
4455         wpa_s->pending_invite_ssid_id = ssid->id;
4456
4457         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4458                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4459                                           ssid->ssid, ssid->ssid_len,
4460                                           go_dev_addr, 1);
4461
4462         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4463                 return -1;
4464
4465         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4466                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4467 }
4468
4469
4470 /* Invite to join an active group */
4471 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4472                           const u8 *peer_addr, const u8 *go_dev_addr)
4473 {
4474         struct wpa_global *global = wpa_s->global;
4475         enum p2p_invite_role role;
4476         u8 *bssid = NULL;
4477         struct wpa_ssid *ssid;
4478         int persistent;
4479
4480         wpa_s->p2p_persistent_go_freq = 0;
4481         wpa_s->p2p_go_ht40 = 0;
4482
4483         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4484                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4485                         break;
4486         }
4487         if (wpa_s == NULL) {
4488                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4489                 return -1;
4490         }
4491
4492         ssid = wpa_s->current_ssid;
4493         if (ssid == NULL) {
4494                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4495                            "invitation");
4496                 return -1;
4497         }
4498
4499         persistent = ssid->p2p_persistent_group &&
4500                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4501                                         ssid->ssid, ssid->ssid_len);
4502
4503         if (ssid->mode == WPAS_MODE_P2P_GO) {
4504                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4505                 bssid = wpa_s->own_addr;
4506                 if (go_dev_addr == NULL)
4507                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4508         } else {
4509                 role = P2P_INVITE_ROLE_CLIENT;
4510                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4511                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4512                                    "invite to current group");
4513                         return -1;
4514                 }
4515                 bssid = wpa_s->bssid;
4516                 if (go_dev_addr == NULL &&
4517                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4518                         go_dev_addr = wpa_s->go_dev_addr;
4519         }
4520         wpa_s->parent->pending_invite_ssid_id = -1;
4521
4522         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4523                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4524                                           ssid->ssid, ssid->ssid_len,
4525                                           go_dev_addr, persistent);
4526
4527         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4528                 return -1;
4529
4530         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4531                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4532                           go_dev_addr, persistent);
4533 }
4534
4535
4536 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4537 {
4538         struct wpa_ssid *ssid = wpa_s->current_ssid;
4539         const char *ssid_txt;
4540         u8 go_dev_addr[ETH_ALEN];
4541         int network_id = -1;
4542         int persistent;
4543         int freq;
4544
4545         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4546                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4547                                      wpa_s->parent, NULL);
4548         }
4549
4550         if (!wpa_s->show_group_started || !ssid)
4551                 goto done;
4552
4553         wpa_s->show_group_started = 0;
4554
4555         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4556         os_memset(go_dev_addr, 0, ETH_ALEN);
4557         if (ssid->bssid_set)
4558                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4559         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4560                                                ssid->ssid_len);
4561         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4562
4563         if (wpa_s->global->p2p_group_formation == wpa_s)
4564                 wpa_s->global->p2p_group_formation = NULL;
4565
4566         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4567                 (int) wpa_s->assoc_freq;
4568         if (ssid->passphrase == NULL && ssid->psk_set) {
4569                 char psk[65];
4570                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4571                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4572                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4573                         MACSTR "%s",
4574                         wpa_s->ifname, ssid_txt, freq, psk,
4575                         MAC2STR(go_dev_addr),
4576                         persistent ? " [PERSISTENT]" : "");
4577         } else {
4578                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4579                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4580                         "go_dev_addr=" MACSTR "%s",
4581                         wpa_s->ifname, ssid_txt, freq,
4582                         ssid->passphrase ? ssid->passphrase : "",
4583                         MAC2STR(go_dev_addr),
4584                         persistent ? " [PERSISTENT]" : "");
4585         }
4586
4587         if (persistent)
4588                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4589                                                              ssid, go_dev_addr);
4590         if (network_id < 0)
4591                 network_id = ssid->id;
4592         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4593
4594 done:
4595         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4596             wpa_s->global->p2p != NULL) {
4597                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4598                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4599                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4600                                 "continued after successful connection");
4601                         p2p_increase_search_delay(
4602                                 wpa_s->global->p2p,
4603                                 wpas_p2p_search_delay(wpa_s));
4604                 }
4605         }
4606 }
4607
4608
4609 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4610                           u32 interval1, u32 duration2, u32 interval2)
4611 {
4612         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4613                 return -1;
4614         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4615                 return -1;
4616
4617         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4618             wpa_s->current_ssid == NULL ||
4619             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4620                 return -1;
4621
4622         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4623                                 wpa_s->own_addr, wpa_s->assoc_freq,
4624                                 duration1, interval1, duration2, interval2);
4625 }
4626
4627
4628 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4629                         unsigned int interval)
4630 {
4631         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4632                 return -1;
4633
4634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4635                 return -1;
4636
4637         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4638 }
4639
4640
4641 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4642 {
4643         return wpa_s->current_ssid != NULL &&
4644                 wpa_s->current_ssid->p2p_group &&
4645                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4646 }
4647
4648
4649 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4650 {
4651         struct wpa_supplicant *wpa_s = eloop_ctx;
4652
4653         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4654                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4655                            "disabled");
4656                 return;
4657         }
4658
4659         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4660                    "group");
4661         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4662 }
4663
4664
4665 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4666 {
4667         int timeout;
4668
4669         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4670                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4671
4672         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4673                 return;
4674
4675         timeout = wpa_s->conf->p2p_group_idle;
4676         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4677             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4678             timeout = P2P_MAX_CLIENT_IDLE;
4679
4680         if (timeout == 0)
4681                 return;
4682
4683         if (timeout < 0) {
4684                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4685                         timeout = 0; /* special client mode no-timeout */
4686                 else
4687                         return;
4688         }
4689
4690         if (wpa_s->p2p_in_provisioning) {
4691                 /*
4692                  * Use the normal group formation timeout during the
4693                  * provisioning phase to avoid terminating this process too
4694                  * early due to group idle timeout.
4695                  */
4696                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4697                            "during provisioning");
4698                 return;
4699         }
4700 #ifndef ANDROID_P2P
4701         if (wpa_s->show_group_started) {
4702                 /*
4703                  * Use the normal group formation timeout between the end of
4704                  * the provisioning phase and completion of 4-way handshake to
4705                  * avoid terminating this process too early due to group idle
4706                  * timeout.
4707                  */
4708                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4709                            "while waiting for initial 4-way handshake to "
4710                            "complete");
4711                 return;
4712         }
4713 #endif
4714
4715         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4716                    timeout);
4717         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4718                                wpa_s, NULL);
4719 }
4720
4721
4722 /* Returns 1 if the interface was removed */
4723 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4724                           u16 reason_code, const u8 *ie, size_t ie_len,
4725                           int locally_generated)
4726 {
4727         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4728                 return 0;
4729         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4730                 return 0;
4731
4732         if (!locally_generated)
4733                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4734                                  ie_len);
4735
4736         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4737             wpa_s->current_ssid &&
4738             wpa_s->current_ssid->p2p_group &&
4739             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4740                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4741                            "session is ending");
4742                 if (wpas_p2p_group_delete(wpa_s,
4743                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4744                     > 0)
4745                         return 1;
4746         }
4747
4748         return 0;
4749 }
4750
4751
4752 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4753                              u16 reason_code, const u8 *ie, size_t ie_len,
4754                              int locally_generated)
4755 {
4756         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4757                 return;
4758         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4759                 return;
4760
4761         if (!locally_generated)
4762                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4763                                    ie_len);
4764 }
4765
4766
4767 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4768 {
4769         struct p2p_data *p2p = wpa_s->global->p2p;
4770
4771         if (p2p == NULL)
4772                 return;
4773
4774         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4775                 return;
4776
4777         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4778                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4779
4780         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4781                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4782
4783         if (wpa_s->wps &&
4784             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4785                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4786
4787         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4788                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4789
4790         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4791                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4792                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4793                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4794                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4795         }
4796
4797         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4798                 p2p_set_sec_dev_types(p2p,
4799                                       (void *) wpa_s->conf->sec_device_type,
4800                                       wpa_s->conf->num_sec_device_types);
4801
4802         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4803                 int i;
4804                 p2p_remove_wps_vendor_extensions(p2p);
4805                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4806                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4807                                 continue;
4808                         p2p_add_wps_vendor_extension(
4809                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4810                 }
4811         }
4812
4813         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4814             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4815                 char country[3];
4816                 country[0] = wpa_s->conf->country[0];
4817                 country[1] = wpa_s->conf->country[1];
4818                 country[2] = 0x04;
4819                 p2p_set_country(p2p, country);
4820         }
4821
4822         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4823                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4824                                      wpa_s->conf->p2p_ssid_postfix ?
4825                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4826                                      0);
4827         }
4828
4829         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4830                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4831
4832         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4833                 u8 reg_class, channel;
4834                 int ret;
4835                 unsigned int r;
4836                 if (wpa_s->conf->p2p_listen_reg_class &&
4837                     wpa_s->conf->p2p_listen_channel) {
4838                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4839                         channel = wpa_s->conf->p2p_listen_channel;
4840                 } else {
4841                         reg_class = 81;
4842                         /*
4843                          * Pick one of the social channels randomly as the
4844                          * listen channel.
4845                          */
4846                         os_get_random((u8 *) &r, sizeof(r));
4847                         channel = 1 + (r % 3) * 5;
4848                 }
4849                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4850                 if (ret)
4851                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4852                                    "failed: %d", ret);
4853         }
4854         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4855                 u8 op_reg_class, op_channel, cfg_op_channel;
4856                 int ret = 0;
4857                 unsigned int r;
4858                 if (wpa_s->conf->p2p_oper_reg_class &&
4859                     wpa_s->conf->p2p_oper_channel) {
4860                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4861                         op_channel = wpa_s->conf->p2p_oper_channel;
4862                         cfg_op_channel = 1;
4863                 } else {
4864                         op_reg_class = 81;
4865                         /*
4866                          * Use random operation channel from (1, 6, 11)
4867                          *if no other preference is indicated.
4868                          */
4869                         os_get_random((u8 *) &r, sizeof(r));
4870                         op_channel = 1 + (r % 3) * 5;
4871                         cfg_op_channel = 0;
4872                 }
4873                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4874                                            cfg_op_channel);
4875                 if (ret)
4876                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4877                                    "failed: %d", ret);
4878         }
4879
4880         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4881                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4882                                       wpa_s->conf->p2p_pref_chan) < 0) {
4883                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4884                                    "update failed");
4885                 }
4886         }
4887 }
4888
4889
4890 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4891                      int duration)
4892 {
4893         if (!wpa_s->ap_iface)
4894                 return -1;
4895         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4896                                    duration);
4897 }
4898
4899
4900 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4901 {
4902         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4903                 return -1;
4904         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4905                 return -1;
4906
4907         wpa_s->global->cross_connection = enabled;
4908         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4909
4910         if (!enabled) {
4911                 struct wpa_supplicant *iface;
4912
4913                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4914                 {
4915                         if (iface->cross_connect_enabled == 0)
4916                                 continue;
4917
4918                         iface->cross_connect_enabled = 0;
4919                         iface->cross_connect_in_use = 0;
4920                         wpa_msg(iface->parent, MSG_INFO,
4921                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4922                                 iface->ifname, iface->cross_connect_uplink);
4923                 }
4924         }
4925
4926         return 0;
4927 }
4928
4929
4930 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4931 {
4932         struct wpa_supplicant *iface;
4933
4934         if (!uplink->global->cross_connection)
4935                 return;
4936
4937         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4938                 if (!iface->cross_connect_enabled)
4939                         continue;
4940                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4941                     0)
4942                         continue;
4943                 if (iface->ap_iface == NULL)
4944                         continue;
4945                 if (iface->cross_connect_in_use)
4946                         continue;
4947
4948                 iface->cross_connect_in_use = 1;
4949                 wpa_msg(iface->parent, MSG_INFO,
4950                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4951                         iface->ifname, iface->cross_connect_uplink);
4952         }
4953 }
4954
4955
4956 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4957 {
4958         struct wpa_supplicant *iface;
4959
4960         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4961                 if (!iface->cross_connect_enabled)
4962                         continue;
4963                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4964                     0)
4965                         continue;
4966                 if (!iface->cross_connect_in_use)
4967                         continue;
4968
4969                 wpa_msg(iface->parent, MSG_INFO,
4970                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4971                         iface->ifname, iface->cross_connect_uplink);
4972                 iface->cross_connect_in_use = 0;
4973         }
4974 }
4975
4976
4977 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
4978 {
4979         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
4980             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
4981             wpa_s->cross_connect_disallowed)
4982                 wpas_p2p_disable_cross_connect(wpa_s);
4983         else
4984                 wpas_p2p_enable_cross_connect(wpa_s);
4985         if (!wpa_s->ap_iface &&
4986             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4987                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4988 }
4989
4990
4991 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
4992 {
4993         wpas_p2p_disable_cross_connect(wpa_s);
4994         if (!wpa_s->ap_iface &&
4995             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
4996                                          wpa_s, NULL))
4997                 wpas_p2p_set_group_idle_timeout(wpa_s);
4998 }
4999
5000
5001 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5002 {
5003         struct wpa_supplicant *iface;
5004
5005         if (!wpa_s->global->cross_connection)
5006                 return;
5007
5008         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5009                 if (iface == wpa_s)
5010                         continue;
5011                 if (iface->drv_flags &
5012                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5013                         continue;
5014                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5015                         continue;
5016
5017                 wpa_s->cross_connect_enabled = 1;
5018                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5019                            sizeof(wpa_s->cross_connect_uplink));
5020                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5021                            "%s to %s whenever uplink is available",
5022                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5023
5024                 if (iface->ap_iface || iface->current_ssid == NULL ||
5025                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5026                     iface->cross_connect_disallowed ||
5027                     iface->wpa_state != WPA_COMPLETED)
5028                         break;
5029
5030                 wpa_s->cross_connect_in_use = 1;
5031                 wpa_msg(wpa_s->parent, MSG_INFO,
5032                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5033                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5034                 break;
5035         }
5036 }
5037
5038
5039 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5040 {
5041         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5042             !wpa_s->p2p_in_provisioning)
5043                 return 0; /* not P2P client operation */
5044
5045         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5046                    "session overlap");
5047         if (wpa_s != wpa_s->parent)
5048                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5049
5050         if (wpa_s->global->p2p)
5051                 p2p_group_formation_failed(wpa_s->global->p2p);
5052
5053         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5054                              wpa_s->parent, NULL);
5055
5056         wpas_group_formation_completed(wpa_s, 0);
5057         return 1;
5058 }
5059
5060
5061 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5062 {
5063         struct p2p_channels chan;
5064
5065         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5066                 return;
5067
5068         os_memset(&chan, 0, sizeof(chan));
5069         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5070                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5071                            "channel list");
5072                 return;
5073         }
5074
5075         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5076 }
5077
5078
5079 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5080 {
5081         struct wpa_global *global = wpa_s->global;
5082         int found = 0;
5083         const u8 *peer;
5084
5085         if (global->p2p == NULL)
5086                 return -1;
5087
5088         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5089
5090         if (wpa_s->pending_interface_name[0] &&
5091             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5092                 found = 1;
5093
5094         peer = p2p_get_go_neg_peer(global->p2p);
5095         if (peer) {
5096                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5097                            MACSTR, MAC2STR(peer));
5098                 p2p_unauthorize(global->p2p, peer);
5099                 found = 1;
5100         }
5101
5102         wpas_p2p_stop_find(wpa_s);
5103
5104         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5105                 if (wpa_s == global->p2p_group_formation &&
5106                     (wpa_s->p2p_in_provisioning ||
5107                      wpa_s->parent->pending_interface_type ==
5108                      WPA_IF_P2P_CLIENT)) {
5109                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5110                                    "formation found - cancelling",
5111                                    wpa_s->ifname);
5112                         found = 1;
5113                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5114                                              wpa_s->parent, NULL);
5115                         wpas_p2p_group_delete(wpa_s,
5116                                               P2P_GROUP_REMOVAL_REQUESTED);
5117                         break;
5118                 }
5119         }
5120
5121         if (!found) {
5122                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5123                 return -1;
5124         }
5125
5126         return 0;
5127 }
5128
5129
5130 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5131 {
5132         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5133                 return;
5134
5135         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5136                    "being available anymore");
5137         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5138 }
5139
5140
5141 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5142                                    int freq_24, int freq_5, int freq_overall)
5143 {
5144         struct p2p_data *p2p = wpa_s->global->p2p;
5145         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5146                 return;
5147         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5148 }
5149
5150
5151 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5152 {
5153         u8 peer[ETH_ALEN];
5154         struct p2p_data *p2p = wpa_s->global->p2p;
5155
5156         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5157                 return -1;
5158
5159         if (hwaddr_aton(addr, peer))
5160                 return -1;
5161
5162         return p2p_unauthorize(p2p, peer);
5163 }
5164
5165
5166 /**
5167  * wpas_p2p_disconnect - Disconnect from a P2P Group
5168  * @wpa_s: Pointer to wpa_supplicant data
5169  * Returns: 0 on success, -1 on failure
5170  *
5171  * This can be used to disconnect from a group in which the local end is a P2P
5172  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5173  * virtual network interface was created for this group, that interface will be
5174  * removed. Otherwise, only the configured P2P group network will be removed
5175  * from the interface.
5176  */
5177 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5178 {
5179
5180         if (wpa_s == NULL)
5181                 return -1;
5182
5183         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5184                 -1 : 0;
5185 }
5186
5187
5188 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5189 {
5190         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5191                 return 0;
5192
5193         return p2p_in_progress(wpa_s->global->p2p);
5194 }
5195
5196
5197 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5198                               struct wpa_ssid *ssid)
5199 {
5200         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5201             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5202                                  wpa_s->parent, NULL) > 0) {
5203                 /**
5204                  * Remove the network by scheduling the group formation
5205                  * timeout to happen immediately. The teardown code
5206                  * needs to be scheduled to run asynch later so that we
5207                  * don't delete data from under ourselves unexpectedly.
5208                  * Calling wpas_p2p_group_formation_timeout directly
5209                  * causes a series of crashes in WPS failure scenarios.
5210                  */
5211                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5212                            "P2P group network getting removed");
5213                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5214                                        wpa_s->parent, NULL);
5215         }
5216 }
5217
5218
5219 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5220                                           const u8 *addr, const u8 *ssid,
5221                                           size_t ssid_len)
5222 {
5223         struct wpa_ssid *s;
5224         size_t i;
5225
5226         for (s = wpa_s->conf->ssid; s; s = s->next) {
5227                 if (s->disabled != 2)
5228                         continue;
5229                 if (ssid &&
5230                     (ssid_len != s->ssid_len ||
5231                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5232                         continue;
5233                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5234                         return s; /* peer is GO in the persistent group */
5235                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5236                         continue;
5237                 for (i = 0; i < s->num_p2p_clients; i++) {
5238                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5239                                       addr, ETH_ALEN) == 0)
5240                                 return s; /* peer is P2P client in persistent
5241                                            * group */
5242                 }
5243         }
5244
5245         return NULL;
5246 }
5247
5248
5249 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5250                                        const u8 *addr)
5251 {
5252         if (addr == NULL)
5253                 return;
5254         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5255 }
5256
5257
5258 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5259                                         int group_added)
5260 {
5261         struct wpa_supplicant *group = wpa_s;
5262         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5263         if (wpa_s->global->p2p_group_formation)
5264                 group = wpa_s->global->p2p_group_formation;
5265         wpa_s = wpa_s->parent;
5266         offchannel_send_action_done(wpa_s);
5267         if (group_added)
5268                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5269         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5270         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5271                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5272                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5273                          wpa_s->p2p_persistent_id,
5274                          wpa_s->p2p_pd_before_go_neg,
5275                          wpa_s->p2p_go_ht40);
5276 }
5277
5278
5279 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5280 {
5281         if (!wpa_s->p2p_fallback_to_go_neg ||
5282             wpa_s->p2p_in_provisioning <= 5)
5283                 return 0;
5284
5285         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5286                 return 0; /* peer operating as a GO */
5287
5288         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5289                 "fallback to GO Negotiation");
5290         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5291
5292         return 1;
5293 }
5294
5295
5296 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5297 {
5298         const char *rn, *rn2;
5299         struct wpa_supplicant *ifs;
5300
5301         if (wpa_s->wpa_state > WPA_SCANNING) {
5302                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5303                         "concurrent operation",
5304                         P2P_CONCURRENT_SEARCH_DELAY);
5305                 return P2P_CONCURRENT_SEARCH_DELAY;
5306         }
5307
5308         if (!wpa_s->driver->get_radio_name)
5309                 return 0;
5310         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5311         if (rn == NULL || rn[0] == '\0')
5312                 return 0;
5313
5314         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5315                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5316                         continue;
5317
5318                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5319                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5320                         continue;
5321                 if (ifs->wpa_state > WPA_SCANNING) {
5322                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5323                                 "delay due to concurrent operation on "
5324                                 "interface %s",
5325                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5326                         return P2P_CONCURRENT_SEARCH_DELAY;
5327                 }
5328         }
5329
5330         return 0;
5331 }
5332
5333 #ifdef ANDROID_P2P
5334 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5335 {
5336         struct wpa_supplicant *iface = NULL;
5337         struct p2p_data *p2p = wpa_s->global->p2p;
5338
5339         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5340                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5341                         (iface->current_ssid->frequency != freq)) {
5342
5343                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5344                                         /* Try to see whether we can move the GO. If it
5345                                          * is not possible, remove the GO interface
5346                                          */
5347                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5348                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5349                                                         iface->current_ssid->frequency = freq;
5350                                                         continue;
5351                                         }
5352                         }
5353
5354                         /* If GO cannot be moved or if the conflicting interface is a
5355                          * P2P Client, remove the interface depending up on the connection
5356                          * priority */
5357                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5358                                 /* STA connection has priority over existing
5359                                  * P2P connection. So remove the interface */
5360                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5361                                                 "concurrent mode frequency conflict");
5362                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5363                         } else {
5364                                 /* Existing connection has the priority. Disable the newly
5365                  * selected network and let the application know about it.
5366                                  */
5367                                 return -1;
5368                         }
5369                 }
5370         }
5371         return 0;
5372 }
5373 #endif