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 #ifdef ANDROID_P2P
  82 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s);
  83 #endif
  84 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  85 static struct wpa_supplicant *
  86 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  87                          int go);
  88 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  89 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  90 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  91 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  92                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  93                          int auto_join);
  94 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  95                                             void *timeout_ctx);
  96 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  97 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  98 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  99 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 100 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 101                                         int group_added);
 102
 103 #ifdef ANDROID_P2P
 104 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s)
 105 {
 106         struct wpa_supplicant *iface = NULL;
 107
 108         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
 109                 if(iface->scanning  || iface->wpa_state == WPA_SCANNING) {
 110                         wpa_printf(MSG_DEBUG, "P2P: Scan in progress on %s,"
 111                         "defer P2P SEARCH", iface->ifname);
 112                         return 1;
 113                 }
 114         }
 115
 116         return 0;
 117 }
 118 #endif
 119
 120 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 121                                       struct wpa_scan_results *scan_res)
 122 {
 123         size_t i;
 124
 125         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 126                 return;
 127
 128         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 129                    (int) scan_res->num);
 130
 131         for (i = 0; i < scan_res->num; i++) {
 132                 struct wpa_scan_res *bss = scan_res->res[i];
 133                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 134                                          bss->freq, bss->level,
 135                                          (const u8 *) (bss + 1),
 136                                          bss->ie_len) > 0)
 137                         break;
 138         }
 139
 140         p2p_scan_res_handled(wpa_s->global->p2p);
 141 }
 142
 143
 144 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 145                          unsigned int num_req_dev_types,
 146                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 147 {
 148         struct wpa_supplicant *wpa_s = ctx;
 149         struct wpa_supplicant *ifs;
 150         struct wpa_driver_scan_params params;
 151         int ret;
 152         struct wpabuf *wps_ie, *ies;
 153         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 154         size_t ielen;
 155
 156         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 157                 return -1;
 158
 159         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 160                 if (ifs->sta_scan_pending &&
 161                     wpas_p2p_in_progress(wpa_s) == 2) {
 162                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 163                                    "pending station mode scan to be "
 164                                    "completed on interface %s", ifs->ifname);
 165 #ifdef ANDROID_P2P
 166                         ifs->p2p_cb_on_scan_complete = 1;
 167 #else
 168                         wpa_s->p2p_cb_on_scan_complete = 1;
 169 #endif
 170                         wpa_supplicant_req_scan(ifs, 0, 0);
 171                         return 1;
 172                 }
 173 #ifdef ANDROID_P2P
 174                 else if(ifs->scanning) {
 175                         wpa_printf(MSG_DEBUG, "Wait for the STA scan"
 176                                    "to be "
 177                                    "completed on interface %s", ifs->ifname);
 178                         ifs->p2p_cb_on_scan_complete = 1;
 179                         return 1;
 180                 }
 181 #endif
 182         }
 183
 184         os_memset(&params, 0, sizeof(params));
 185
 186         /* P2P Wildcard SSID */
 187         params.num_ssids = 1;
 188         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 189         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 190
 191         wpa_s->wps->dev.p2p = 1;
 192         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 193                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 194                                         num_req_dev_types, req_dev_types);
 195         if (wps_ie == NULL)
 196                 return -1;
 197
 198         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 199         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 200         if (ies == NULL) {
 201                 wpabuf_free(wps_ie);
 202                 return -1;
 203         }
 204         wpabuf_put_buf(ies, wps_ie);
 205         wpabuf_free(wps_ie);
 206
 207         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 208
 209         params.p2p_probe = 1;
 210         params.extra_ies = wpabuf_head(ies);
 211         params.extra_ies_len = wpabuf_len(ies);
 212
 213         switch (type) {
 214         case P2P_SCAN_SOCIAL:
 215                 params.freqs = social_channels;
 216                 break;
 217         case P2P_SCAN_FULL:
 218                 break;
 219         case P2P_SCAN_SPECIFIC:
 220                 social_channels[0] = freq;
 221                 social_channels[1] = 0;
 222                 params.freqs = social_channels;
 223                 break;
 224         case P2P_SCAN_SOCIAL_PLUS_ONE:
 225                 social_channels[3] = freq;
 226                 params.freqs = social_channels;
 227                 break;
 228         }
 229
 230         ret = wpa_drv_scan(wpa_s, &params);
 231
 232         wpabuf_free(ies);
 233
 234         if (ret) {
 235                 if (wpa_s->scanning ||
 236                     wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
 237                         wpa_s->p2p_cb_on_scan_complete = 1;
 238                         ret = 1;
 239                 }
 240         } else
 241                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 242
 243         return ret;
 244 }
 245
 246
 247 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 248 {
 249         switch (p2p_group_interface) {
 250         case P2P_GROUP_INTERFACE_PENDING:
 251                 return WPA_IF_P2P_GROUP;
 252         case P2P_GROUP_INTERFACE_GO:
 253                 return WPA_IF_P2P_GO;
 254         case P2P_GROUP_INTERFACE_CLIENT:
 255                 return WPA_IF_P2P_CLIENT;
 256         }
 257
 258         return WPA_IF_P2P_GROUP;
 259 }
 260
 261
 262 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 263                                                   const u8 *ssid,
 264                                                   size_t ssid_len, int *go)
 265 {
 266         struct wpa_ssid *s;
 267
 268         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 269                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 270                         if (s->disabled != 0 || !s->p2p_group ||
 271                             s->ssid_len != ssid_len ||
 272                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 273                                 continue;
 274                         if (s->mode == WPAS_MODE_P2P_GO &&
 275                             s != wpa_s->current_ssid)
 276                                 continue;
 277                         if (go)
 278                                 *go = s->mode == WPAS_MODE_P2P_GO;
 279                         return wpa_s;
 280                 }
 281         }
 282
 283         return NULL;
 284 }
 285
 286
 287 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 288                                  enum p2p_group_removal_reason removal_reason)
 289 {
 290         struct wpa_ssid *ssid;
 291         char *gtype;
 292         const char *reason;
 293
 294         ssid = wpa_s->current_ssid;
 295         if (ssid == NULL) {
 296                 /*
 297                  * The current SSID was not known, but there may still be a
 298                  * pending P2P group interface waiting for provisioning.
 299                  */
 300                 ssid = wpa_s->conf->ssid;
 301                 while (ssid) {
 302                         if (ssid->p2p_group &&
 303                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 304                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 305                                 break;
 306                         ssid = ssid->next;
 307                 }
 308                 if (ssid == NULL &&
 309                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 310                 {
 311                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 312                                    "not found");
 313                         return -1;
 314                 }
 315         }
 316         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 317                 gtype = "GO";
 318         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 319                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 320                 wpa_s->reassociate = 0;
 321                 wpa_s->disconnected = 1;
 322                 wpa_supplicant_deauthenticate(wpa_s,
 323                                               WLAN_REASON_DEAUTH_LEAVING);
 324                 gtype = "client";
 325         } else
 326                 gtype = "GO";
 327         if (wpa_s->cross_connect_in_use) {
 328                 wpa_s->cross_connect_in_use = 0;
 329                 wpa_msg(wpa_s->parent, MSG_INFO,
 330                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 331                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 332         }
 333         switch (removal_reason) {
 334         case P2P_GROUP_REMOVAL_REQUESTED:
 335                 reason = " reason=REQUESTED";
 336                 break;
 337         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 338                 reason = " reason=FORMATION_FAILED";
 339                 break;
 340         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 341                 reason = " reason=IDLE";
 342                 break;
 343         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 344                 reason = " reason=UNAVAILABLE";
 345                 break;
 346         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 347                 reason = " reason=GO_ENDING_SESSION";
 348                 break;
 349 #ifdef ANDROID_P2P
 350         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 351                 reason = " reason=FREQ_CONFLICT";
 352                 break;
 353 #endif
 354         default:
 355                 reason = "";
 356                 break;
 357         }
 358         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 359                 wpa_msg(wpa_s->parent, MSG_INFO,
 360                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 361                         wpa_s->ifname, gtype, reason);
 362         }
 363
 364         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 365                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 366
 367         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 368                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 369
 370         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 371                 struct wpa_global *global;
 372                 char *ifname;
 373                 enum wpa_driver_if_type type;
 374                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 375                         wpa_s->ifname);
 376                 global = wpa_s->global;
 377                 ifname = os_strdup(wpa_s->ifname);
 378                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 379                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 380                 wpa_s = global->ifaces;
 381                 if (wpa_s && ifname)
 382                         wpa_drv_if_remove(wpa_s, type, ifname);
 383                 os_free(ifname);
 384                 return 1;
 385         }
 386
 387         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 388         if (ssid && (ssid->p2p_group ||
 389                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 390                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 391                 int id = ssid->id;
 392                 if (ssid == wpa_s->current_ssid) {
 393                         wpa_sm_set_config(wpa_s->wpa, NULL);
 394                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 395                         wpa_s->current_ssid = NULL;
 396                 }
 397                 /*
 398                  * Networks objects created during any P2P activities are not
 399                  * exposed out as they might/will confuse certain non-P2P aware
 400                  * applications since these network objects won't behave like
 401                  * regular ones.
 402                  *
 403                  * Likewise, we don't send out network removed signals for such
 404                  * network objects.
 405                  */
 406                 wpa_config_remove_network(wpa_s->conf, id);
 407                 wpa_supplicant_clear_status(wpa_s);
 408                 wpa_supplicant_cancel_sched_scan(wpa_s);
 409         } else {
 410                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 411                            "found");
 412         }
 413         if (wpa_s->ap_iface)
 414                 wpa_supplicant_ap_deinit(wpa_s);
 415         else
 416                 wpa_drv_deinit_p2p_cli(wpa_s);
 417
 418         return 0;
 419 }
 420
 421
 422 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 423                                      u8 *go_dev_addr,
 424                                      const u8 *ssid, size_t ssid_len)
 425 {
 426         struct wpa_bss *bss;
 427         const u8 *bssid;
 428         struct wpabuf *p2p;
 429         u8 group_capab;
 430         const u8 *addr;
 431
 432         if (wpa_s->go_params)
 433                 bssid = wpa_s->go_params->peer_interface_addr;
 434         else
 435                 bssid = wpa_s->bssid;
 436
 437         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 438         if (bss == NULL) {
 439                 u8 iface_addr[ETH_ALEN];
 440                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 441                                            iface_addr) == 0)
 442                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 443         }
 444         if (bss == NULL) {
 445                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 446                            "group is persistent - BSS " MACSTR " not found",
 447                            MAC2STR(bssid));
 448                 return 0;
 449         }
 450
 451         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 452         if (p2p == NULL) {
 453                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 454                            "group is persistent - BSS " MACSTR
 455                            " did not include P2P IE", MAC2STR(bssid));
 456                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 457                             (u8 *) (bss + 1), bss->ie_len);
 458                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 459                             ((u8 *) bss + 1) + bss->ie_len,
 460                             bss->beacon_ie_len);
 461                 return 0;
 462         }
 463
 464         group_capab = p2p_get_group_capab(p2p);
 465         addr = p2p_get_go_dev_addr(p2p);
 466         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 467                    "group_capab=0x%x", group_capab);
 468         if (addr) {
 469                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 470                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 471                            MAC2STR(addr));
 472         } else
 473                 os_memset(go_dev_addr, 0, ETH_ALEN);
 474         wpabuf_free(p2p);
 475
 476         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 477                    "go_dev_addr=" MACSTR,
 478                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 479
 480         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 481 }
 482
 483
 484 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 485                                            struct wpa_ssid *ssid,
 486                                            const u8 *go_dev_addr)
 487 {
 488         struct wpa_ssid *s;
 489         int changed = 0;
 490
 491         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 492                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 493         for (s = wpa_s->conf->ssid; s; s = s->next) {
 494                 if (s->disabled == 2 &&
 495                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 496                     s->ssid_len == ssid->ssid_len &&
 497                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 498                         break;
 499         }
 500
 501         if (s) {
 502                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 503                            "entry");
 504                 if (ssid->passphrase && !s->passphrase)
 505                         changed = 1;
 506                 else if (ssid->passphrase && s->passphrase &&
 507                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 508                         changed = 1;
 509         } else {
 510                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 511                            "entry");
 512                 changed = 1;
 513                 s = wpa_config_add_network(wpa_s->conf);
 514                 if (s == NULL)
 515                         return -1;
 516
 517                 /*
 518                  * Instead of network_added we emit persistent_group_added
 519                  * notification. Also to keep the defense checks in
 520                  * persistent_group obj registration method, we set the
 521                  * relevant flags in s to designate it as a persistent group.
 522                  */
 523                 s->p2p_group = 1;
 524                 s->p2p_persistent_group = 1;
 525                 wpas_notify_persistent_group_added(wpa_s, s);
 526                 wpa_config_set_network_defaults(s);
 527         }
 528
 529         s->p2p_group = 1;
 530         s->p2p_persistent_group = 1;
 531         s->disabled = 2;
 532         s->bssid_set = 1;
 533         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 534         s->mode = ssid->mode;
 535         s->auth_alg = WPA_AUTH_ALG_OPEN;
 536         s->key_mgmt = WPA_KEY_MGMT_PSK;
 537         s->proto = WPA_PROTO_RSN;
 538         s->pairwise_cipher = WPA_CIPHER_CCMP;
 539         s->export_keys = 1;
 540         if (ssid->passphrase) {
 541                 os_free(s->passphrase);
 542                 s->passphrase = os_strdup(ssid->passphrase);
 543         }
 544         if (ssid->psk_set) {
 545                 s->psk_set = 1;
 546                 os_memcpy(s->psk, ssid->psk, 32);
 547         }
 548         if (s->passphrase && !s->psk_set)
 549                 wpa_config_update_psk(s);
 550         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 551                 os_free(s->ssid);
 552                 s->ssid = os_malloc(ssid->ssid_len);
 553         }
 554         if (s->ssid) {
 555                 s->ssid_len = ssid->ssid_len;
 556                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 557         }
 558
 559 #ifndef CONFIG_NO_CONFIG_WRITE
 560         if (changed && wpa_s->conf->update_config &&
 561             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 562                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 563         }
 564 #endif /* CONFIG_NO_CONFIG_WRITE */
 565
 566         return s->id;
 567 }
 568
 569
 570 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 571                                                  const u8 *addr)
 572 {
 573         struct wpa_ssid *ssid, *s;
 574         u8 *n;
 575         size_t i;
 576         int found = 0;
 577
 578         ssid = wpa_s->current_ssid;
 579         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 580             !ssid->p2p_persistent_group)
 581                 return;
 582
 583         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 584                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 585                         continue;
 586
 587                 if (s->ssid_len == ssid->ssid_len &&
 588                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 589                         break;
 590         }
 591
 592         if (s == NULL)
 593                 return;
 594
 595         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 596                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 597                               ETH_ALEN) != 0)
 598                         continue;
 599
 600                 if (i == s->num_p2p_clients - 1)
 601                         return; /* already the most recent entry */
 602
 603                 /* move the entry to mark it most recent */
 604                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 605                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 606                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 607                 os_memcpy(s->p2p_client_list +
 608                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 609                 found = 1;
 610                 break;
 611         }
 612
 613         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 614                 n = os_realloc_array(s->p2p_client_list,
 615                                      s->num_p2p_clients + 1, ETH_ALEN);
 616                 if (n == NULL)
 617                         return;
 618                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 619                 s->p2p_client_list = n;
 620                 s->num_p2p_clients++;
 621         } else if (!found) {
 622                 /* Not enough room for an additional entry - drop the oldest
 623                  * entry */
 624                 os_memmove(s->p2p_client_list,
 625                            s->p2p_client_list + ETH_ALEN,
 626                            (s->num_p2p_clients - 1) * ETH_ALEN);
 627                 os_memcpy(s->p2p_client_list +
 628                           (s->num_p2p_clients - 1) * ETH_ALEN,
 629                           addr, ETH_ALEN);
 630         }
 631
 632 #ifndef CONFIG_NO_CONFIG_WRITE
 633         if (wpa_s->parent->conf->update_config &&
 634             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 635                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 636 #endif /* CONFIG_NO_CONFIG_WRITE */
 637 }
 638
 639
 640 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 641                                            int success)
 642 {
 643         struct wpa_ssid *ssid;
 644         const char *ssid_txt;
 645         int client;
 646         int persistent;
 647         u8 go_dev_addr[ETH_ALEN];
 648         int network_id = -1;
 649
 650         /*
 651          * This callback is likely called for the main interface. Update wpa_s
 652          * to use the group interface if a new interface was created for the
 653          * group.
 654          */
 655         if (wpa_s->global->p2p_group_formation)
 656                 wpa_s = wpa_s->global->p2p_group_formation;
 657         wpa_s->global->p2p_group_formation = NULL;
 658         wpa_s->p2p_in_provisioning = 0;
 659
 660         if (!success) {
 661                 wpa_msg(wpa_s->parent, MSG_INFO,
 662                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 663                 wpas_p2p_group_delete(wpa_s,
 664                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 665                 return;
 666         }
 667
 668         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 669
 670         ssid = wpa_s->current_ssid;
 671         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 672                 ssid->mode = WPAS_MODE_P2P_GO;
 673                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 674                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 675         }
 676
 677         persistent = 0;
 678         if (ssid) {
 679                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 680                 client = ssid->mode == WPAS_MODE_INFRA;
 681                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 682                         persistent = ssid->p2p_persistent_group;
 683                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 684                                   ETH_ALEN);
 685                 } else
 686                         persistent = wpas_p2p_persistent_group(wpa_s,
 687                                                                go_dev_addr,
 688                                                                ssid->ssid,
 689                                                                ssid->ssid_len);
 690         } else {
 691                 ssid_txt = "";
 692                 client = wpa_s->p2p_group_interface ==
 693                         P2P_GROUP_INTERFACE_CLIENT;
 694                 os_memset(go_dev_addr, 0, ETH_ALEN);
 695         }
 696
 697         wpa_s->show_group_started = 0;
 698         if (client) {
 699                 /*
 700                  * Indicate event only after successfully completed 4-way
 701                  * handshake, i.e., when the interface is ready for data
 702                  * packets.
 703                  */
 704                 wpa_s->show_group_started = 1;
 705 #ifdef ANDROID_P2P
 706                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 707                  * So we need to restore wpa_s->global->p2p_group_formation */
 708                 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s);
 709                 wpa_s->global->p2p_group_formation = wpa_s;
 710 #endif
 711
 712         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 713                 char psk[65];
 714                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 715                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 716                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 717                         "%s",
 718                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 719                         MAC2STR(go_dev_addr),
 720                         persistent ? " [PERSISTENT]" : "");
 721                 wpas_p2p_cross_connect_setup(wpa_s);
 722                 wpas_p2p_set_group_idle_timeout(wpa_s);
 723         } else {
 724                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 725                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 726                         "go_dev_addr=" MACSTR "%s",
 727                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 728                         ssid && ssid->passphrase ? ssid->passphrase : "",
 729                         MAC2STR(go_dev_addr),
 730                         persistent ? " [PERSISTENT]" : "");
 731                 wpas_p2p_cross_connect_setup(wpa_s);
 732                 wpas_p2p_set_group_idle_timeout(wpa_s);
 733         }
 734
 735         if (persistent)
 736                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 737                                                              ssid, go_dev_addr);
 738         if (network_id < 0 && ssid)
 739                 network_id = ssid->id;
 740         if (!client)
 741                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 742 }
 743
 744
 745 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 746                                            unsigned int freq,
 747                                            const u8 *dst, const u8 *src,
 748                                            const u8 *bssid,
 749                                            const u8 *data, size_t data_len,
 750                                            enum offchannel_send_action_result
 751                                            result)
 752 {
 753         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 754
 755         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 756                 return;
 757         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 758                 return;
 759
 760         switch (result) {
 761         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 762                 res = P2P_SEND_ACTION_SUCCESS;
 763                 break;
 764         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 765                 res = P2P_SEND_ACTION_NO_ACK;
 766                 break;
 767         case OFFCHANNEL_SEND_ACTION_FAILED:
 768                 res = P2P_SEND_ACTION_FAILED;
 769                 break;
 770         }
 771
 772         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 773
 774         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 775             wpa_s->pending_pd_before_join &&
 776             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 777              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 778                 wpa_s->pending_pd_before_join = 0;
 779                 if (wpa_s->p2p_fallback_to_go_neg) {
 780                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 781                                 "during p2p_connect-auto");
 782                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 783                         return;
 784                 }
 785
 786                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 787                            "join-existing-group operation (no ACK for PD "
 788                            "Req)");
 789                 wpas_p2p_join_start(wpa_s);
 790         }
 791 }
 792
 793
 794 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 795                             const u8 *src, const u8 *bssid, const u8 *buf,
 796                             size_t len, unsigned int wait_time)
 797 {
 798         struct wpa_supplicant *wpa_s = ctx;
 799         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 800                                       wait_time,
 801                                       wpas_p2p_send_action_tx_status, 1);
 802 }
 803
 804
 805 static void wpas_send_action_done(void *ctx)
 806 {
 807         struct wpa_supplicant *wpa_s = ctx;
 808         offchannel_send_action_done(wpa_s);
 809 }
 810
 811
 812 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 813                                     struct p2p_go_neg_results *params)
 814 {
 815         if (wpa_s->go_params == NULL) {
 816                 wpa_s->go_params = os_malloc(sizeof(*params));
 817                 if (wpa_s->go_params == NULL)
 818                         return -1;
 819         }
 820         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 821         return 0;
 822 }
 823
 824
 825 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 826                                     struct p2p_go_neg_results *res)
 827 {
 828         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 829                    MAC2STR(res->peer_interface_addr));
 830         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 831                           res->ssid, res->ssid_len);
 832         wpa_supplicant_ap_deinit(wpa_s);
 833         wpas_copy_go_neg_results(wpa_s, res);
 834         if (res->wps_method == WPS_PBC)
 835                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 836         else {
 837                 u16 dev_pw_id = DEV_PW_DEFAULT;
 838                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 839                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 840                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 841                                    wpa_s->p2p_pin, 1, dev_pw_id);
 842         }
 843 }
 844
 845
 846 static void p2p_go_configured(void *ctx, void *data)
 847 {
 848         struct wpa_supplicant *wpa_s = ctx;
 849         struct p2p_go_neg_results *params = data;
 850         struct wpa_ssid *ssid;
 851         int network_id = -1;
 852
 853         ssid = wpa_s->current_ssid;
 854         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 855                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 856                 if (wpa_s->global->p2p_group_formation == wpa_s)
 857                         wpa_s->global->p2p_group_formation = NULL;
 858                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 859                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 860                         "go_dev_addr=" MACSTR "%s",
 861                         wpa_s->ifname,
 862                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 863                         ssid->frequency,
 864                         params->passphrase ? params->passphrase : "",
 865                         MAC2STR(wpa_s->global->p2p_dev_addr),
 866                         params->persistent_group ? " [PERSISTENT]" : "");
 867
 868                 if (params->persistent_group)
 869                         network_id = wpas_p2p_store_persistent_group(
 870                                 wpa_s->parent, ssid,
 871                                 wpa_s->global->p2p_dev_addr);
 872                 if (network_id < 0)
 873                         network_id = ssid->id;
 874                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 875                 wpas_p2p_cross_connect_setup(wpa_s);
 876                 wpas_p2p_set_group_idle_timeout(wpa_s);
 877                 return;
 878         }
 879
 880         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 881         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 882                                               params->peer_interface_addr)) {
 883                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 884                            "filtering");
 885                 return;
 886         }
 887         if (params->wps_method == WPS_PBC)
 888                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 889                                           params->peer_device_addr);
 890         else if (wpa_s->p2p_pin[0])
 891                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 892                                           wpa_s->p2p_pin, NULL, 0);
 893         os_free(wpa_s->go_params);
 894         wpa_s->go_params = NULL;
 895 }
 896
 897
 898 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 899                               struct p2p_go_neg_results *params,
 900                               int group_formation)
 901 {
 902         struct wpa_ssid *ssid;
 903
 904         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 905                 return;
 906
 907         ssid = wpa_config_add_network(wpa_s->conf);
 908         if (ssid == NULL)
 909                 return;
 910
 911         wpa_s->show_group_started = 0;
 912
 913         wpa_config_set_network_defaults(ssid);
 914         ssid->temporary = 1;
 915         ssid->p2p_group = 1;
 916         ssid->p2p_persistent_group = params->persistent_group;
 917         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 918                 WPAS_MODE_P2P_GO;
 919         ssid->frequency = params->freq;
 920         ssid->ht40 = params->ht40;
 921         ssid->ssid = os_zalloc(params->ssid_len + 1);
 922         if (ssid->ssid) {
 923                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 924                 ssid->ssid_len = params->ssid_len;
 925         }
 926         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 927         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 928         ssid->proto = WPA_PROTO_RSN;
 929         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 930         ssid->passphrase = os_strdup(params->passphrase);
 931         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 932
 933         wpa_s->ap_configured_cb = p2p_go_configured;
 934         wpa_s->ap_configured_cb_ctx = wpa_s;
 935         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 936         wpa_s->connect_without_scan = ssid;
 937         wpa_s->reassociate = 1;
 938         wpa_s->disconnected = 0;
 939         wpa_supplicant_req_scan(wpa_s, 0, 0);
 940 }
 941
 942
 943 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 944                                   const struct wpa_supplicant *src)
 945 {
 946         struct wpa_config *d;
 947         const struct wpa_config *s;
 948
 949         d = dst->conf;
 950         s = src->conf;
 951
 952 #define C(n) if (s->n) d->n = os_strdup(s->n)
 953         C(device_name);
 954         C(manufacturer);
 955         C(model_name);
 956         C(model_number);
 957         C(serial_number);
 958         C(config_methods);
 959 #undef C
 960
 961         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 962         os_memcpy(d->sec_device_type, s->sec_device_type,
 963                   sizeof(d->sec_device_type));
 964         d->num_sec_device_types = s->num_sec_device_types;
 965
 966         d->p2p_group_idle = s->p2p_group_idle;
 967         d->p2p_intra_bss = s->p2p_intra_bss;
 968         d->persistent_reconnect = s->persistent_reconnect;
 969         d->max_num_sta = s->max_num_sta;
 970         d->pbc_in_m1 = s->pbc_in_m1;
 971 }
 972
 973
 974 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 975                                         enum wpa_driver_if_type type)
 976 {
 977         char ifname[120], force_ifname[120];
 978
 979         if (wpa_s->pending_interface_name[0]) {
 980                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 981                            "- skip creation of a new one");
 982                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 983                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 984                                    "unknown?! ifname='%s'",
 985                                    wpa_s->pending_interface_name);
 986                         return -1;
 987                 }
 988                 return 0;
 989         }
 990
 991         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 992                     wpa_s->p2p_group_idx);
 993         if (os_strlen(ifname) >= IFNAMSIZ &&
 994             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 995                 /* Try to avoid going over the IFNAMSIZ length limit */
 996                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 997                             wpa_s->p2p_group_idx);
 998         }
 999         force_ifname[0] = '\0';
1000
1001         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1002                    ifname);
1003         wpa_s->p2p_group_idx++;
1004
1005         wpa_s->pending_interface_type = type;
1006         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1007                            wpa_s->pending_interface_addr, NULL) < 0) {
1008                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1009                            "interface");
1010                 return -1;
1011         }
1012
1013         if (force_ifname[0]) {
1014                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1015                            force_ifname);
1016                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1017                            sizeof(wpa_s->pending_interface_name));
1018         } else
1019                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1020                            sizeof(wpa_s->pending_interface_name));
1021         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1022                    MACSTR, wpa_s->pending_interface_name,
1023                    MAC2STR(wpa_s->pending_interface_addr));
1024
1025         return 0;
1026 }
1027
1028
1029 static void wpas_p2p_remove_pending_group_interface(
1030         struct wpa_supplicant *wpa_s)
1031 {
1032         if (!wpa_s->pending_interface_name[0] ||
1033             is_zero_ether_addr(wpa_s->pending_interface_addr))
1034                 return; /* No pending virtual interface */
1035
1036         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1037                    wpa_s->pending_interface_name);
1038         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1039                           wpa_s->pending_interface_name);
1040         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1041         wpa_s->pending_interface_name[0] = '\0';
1042 }
1043
1044
1045 static struct wpa_supplicant *
1046 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1047 {
1048         struct wpa_interface iface;
1049         struct wpa_supplicant *group_wpa_s;
1050
1051         if (!wpa_s->pending_interface_name[0]) {
1052                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1053                 if (!wpas_p2p_create_iface(wpa_s))
1054                         return NULL;
1055                 /*
1056                  * Something has forced us to remove the pending interface; try
1057                  * to create a new one and hope for the best that we will get
1058                  * the same local address.
1059                  */
1060                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1061                                                  WPA_IF_P2P_CLIENT) < 0)
1062                         return NULL;
1063         }
1064
1065         os_memset(&iface, 0, sizeof(iface));
1066         iface.ifname = wpa_s->pending_interface_name;
1067         iface.driver = wpa_s->driver->name;
1068         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1069         iface.driver_param = wpa_s->conf->driver_param;
1070         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1071         if (group_wpa_s == NULL) {
1072                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1073                            "wpa_supplicant interface");
1074                 return NULL;
1075         }
1076         wpa_s->pending_interface_name[0] = '\0';
1077         group_wpa_s->parent = wpa_s;
1078         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1079                 P2P_GROUP_INTERFACE_CLIENT;
1080         wpa_s->global->p2p_group_formation = group_wpa_s;
1081
1082         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1083
1084         return group_wpa_s;
1085 }
1086
1087
1088 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1089                                              void *timeout_ctx)
1090 {
1091         struct wpa_supplicant *wpa_s = eloop_ctx;
1092         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1093         if (wpa_s->global->p2p)
1094                 p2p_group_formation_failed(wpa_s->global->p2p);
1095         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1096                 wpa_drv_p2p_group_formation_failed(wpa_s);
1097         wpas_group_formation_completed(wpa_s, 0);
1098 }
1099
1100
1101 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1102 {
1103         struct wpa_supplicant *wpa_s = ctx;
1104
1105         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1106                 wpa_drv_cancel_remain_on_channel(wpa_s);
1107                 wpa_s->off_channel_freq = 0;
1108                 wpa_s->roc_waiting_drv_freq = 0;
1109         }
1110
1111         if (res->status) {
1112                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1113                         res->status);
1114                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1115                 wpas_p2p_remove_pending_group_interface(wpa_s);
1116                 return;
1117         }
1118
1119         if (wpa_s->p2p_go_ht40)
1120                 res->ht40 = 1;
1121
1122         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1123         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1124
1125         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1126                 struct wpa_ssid *ssid;
1127                 ssid = wpa_config_get_network(wpa_s->conf,
1128                                               wpa_s->p2p_persistent_id);
1129                 if (ssid && ssid->disabled == 2 &&
1130                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1131                         size_t len = os_strlen(ssid->passphrase);
1132                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1133                                    "on requested persistent group");
1134                         os_memcpy(res->passphrase, ssid->passphrase, len);
1135                         res->passphrase[len] = '\0';
1136                 }
1137         }
1138
1139         if (wpa_s->create_p2p_iface) {
1140                 struct wpa_supplicant *group_wpa_s =
1141                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1142                 if (group_wpa_s == NULL) {
1143                         wpas_p2p_remove_pending_group_interface(wpa_s);
1144                         return;
1145                 }
1146                 if (group_wpa_s != wpa_s) {
1147                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1148                                   sizeof(group_wpa_s->p2p_pin));
1149                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1150                 }
1151                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1152                 wpa_s->pending_interface_name[0] = '\0';
1153                 group_wpa_s->p2p_in_provisioning = 1;
1154
1155                 if (res->role_go)
1156                         wpas_start_wps_go(group_wpa_s, res, 1);
1157                 else
1158                         wpas_start_wps_enrollee(group_wpa_s, res);
1159         } else {
1160                 wpa_s->p2p_in_provisioning = 1;
1161                 wpa_s->global->p2p_group_formation = wpa_s;
1162
1163                 if (res->role_go)
1164                         wpas_start_wps_go(wpa_s, res, 1);
1165                 else
1166                         wpas_start_wps_enrollee(ctx, res);
1167         }
1168
1169         wpa_s->p2p_long_listen = 0;
1170         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1171
1172         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1173         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1174                                (res->peer_config_timeout % 100) * 10000,
1175                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1176 }
1177
1178
1179 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1180 {
1181         struct wpa_supplicant *wpa_s = ctx;
1182         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1183                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1184
1185         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1186 }
1187
1188
1189 void wpas_dev_found(void *ctx, const u8 *addr,
1190                     const struct p2p_peer_info *info,
1191                     int new_device)
1192 {
1193 #ifndef CONFIG_NO_STDOUT_DEBUG
1194         struct wpa_supplicant *wpa_s = ctx;
1195         char devtype[WPS_DEV_TYPE_BUFSIZE];
1196 #define WFD_DEV_INFO_SIZE 9
1197         char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
1198         os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
1199 #ifdef CONFIG_WIFI_DISPLAY
1200         if (info->wfd_subelems) {
1201                 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
1202                                         wpabuf_head(info->wfd_subelems),
1203                                         WFD_DEV_INFO_SIZE);
1204         }
1205 #endif /* CONFIG_WIFI_DISPLAY */
1206         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1207                 " p2p_dev_addr=" MACSTR
1208                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1209                 "dev_capab=0x%x group_capab=0x%x%s%s",
1210                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1211                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1212                                      sizeof(devtype)),
1213                 info->device_name, info->config_methods,
1214                 info->dev_capab, info->group_capab,
1215                 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
1216 #endif /* CONFIG_NO_STDOUT_DEBUG */
1217
1218         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1219 }
1220
1221
1222 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1223 {
1224         struct wpa_supplicant *wpa_s = ctx;
1225
1226         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1227                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1228
1229         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1230 }
1231
1232
1233 static int wpas_start_listen(void *ctx, unsigned int freq,
1234                              unsigned int duration,
1235                              const struct wpabuf *probe_resp_ie)
1236 {
1237         struct wpa_supplicant *wpa_s = ctx;
1238
1239         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1240
1241         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1242                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1243                            "report received Probe Request frames");
1244                 return -1;
1245         }
1246
1247         wpa_s->pending_listen_freq = freq;
1248         wpa_s->pending_listen_duration = duration;
1249
1250         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1251                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1252                            "to remain on channel (%u MHz) for Listen "
1253                            "state", freq);
1254                 wpa_s->pending_listen_freq = 0;
1255                 return -1;
1256         }
1257         wpa_s->off_channel_freq = 0;
1258         wpa_s->roc_waiting_drv_freq = freq;
1259
1260         return 0;
1261 }
1262
1263
1264 static void wpas_stop_listen(void *ctx)
1265 {
1266         struct wpa_supplicant *wpa_s = ctx;
1267         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1268                 wpa_drv_cancel_remain_on_channel(wpa_s);
1269                 wpa_s->off_channel_freq = 0;
1270                 wpa_s->roc_waiting_drv_freq = 0;
1271         }
1272         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1273         wpa_drv_probe_req_report(wpa_s, 0);
1274 }
1275
1276
1277 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1278 {
1279         struct wpa_supplicant *wpa_s = ctx;
1280         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1281 }
1282
1283
1284 static struct p2p_srv_bonjour *
1285 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1286                              const struct wpabuf *query)
1287 {
1288         struct p2p_srv_bonjour *bsrv;
1289         size_t len;
1290
1291         len = wpabuf_len(query);
1292         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1293                          struct p2p_srv_bonjour, list) {
1294                 if (len == wpabuf_len(bsrv->query) &&
1295                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1296                               len) == 0)
1297                         return bsrv;
1298         }
1299         return NULL;
1300 }
1301
1302
1303 static struct p2p_srv_upnp *
1304 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1305                           const char *service)
1306 {
1307         struct p2p_srv_upnp *usrv;
1308
1309         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1310                          struct p2p_srv_upnp, list) {
1311                 if (version == usrv->version &&
1312                     os_strcmp(service, usrv->service) == 0)
1313                         return usrv;
1314         }
1315         return NULL;
1316 }
1317
1318
1319 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1320                                         u8 srv_trans_id)
1321 {
1322         u8 *len_pos;
1323
1324         if (wpabuf_tailroom(resp) < 5)
1325                 return;
1326
1327         /* Length (to be filled) */
1328         len_pos = wpabuf_put(resp, 2);
1329         wpabuf_put_u8(resp, srv_proto);
1330         wpabuf_put_u8(resp, srv_trans_id);
1331         /* Status Code */
1332         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1333         /* Response Data: empty */
1334         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1335 }
1336
1337
1338 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1339                                 struct wpabuf *resp, u8 srv_trans_id)
1340 {
1341         struct p2p_srv_bonjour *bsrv;
1342         u8 *len_pos;
1343
1344         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1345
1346         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1347                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1348                 return;
1349         }
1350
1351         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1352                          struct p2p_srv_bonjour, list) {
1353                 if (wpabuf_tailroom(resp) <
1354                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1355                         return;
1356                 /* Length (to be filled) */
1357                 len_pos = wpabuf_put(resp, 2);
1358                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1359                 wpabuf_put_u8(resp, srv_trans_id);
1360                 /* Status Code */
1361                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1362                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1363                                   wpabuf_head(bsrv->resp),
1364                                   wpabuf_len(bsrv->resp));
1365                 /* Response Data */
1366                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1367                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1368                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1369                              2);
1370         }
1371 }
1372
1373
1374 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1375                                 struct wpabuf *resp, u8 srv_trans_id,
1376                                 const u8 *query, size_t query_len)
1377 {
1378         struct p2p_srv_bonjour *bsrv;
1379         struct wpabuf buf;
1380         u8 *len_pos;
1381
1382         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1383                           query, query_len);
1384         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1385                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1386                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1387                                             srv_trans_id);
1388                 return;
1389         }
1390
1391         if (query_len == 0) {
1392                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1393                 return;
1394         }
1395
1396         if (wpabuf_tailroom(resp) < 5)
1397                 return;
1398         /* Length (to be filled) */
1399         len_pos = wpabuf_put(resp, 2);
1400         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1401         wpabuf_put_u8(resp, srv_trans_id);
1402
1403         wpabuf_set(&buf, query, query_len);
1404         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1405         if (bsrv == NULL) {
1406                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1407                            "available");
1408
1409                 /* Status Code */
1410                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1411                 /* Response Data: empty */
1412                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1413                              2);
1414                 return;
1415         }
1416
1417         /* Status Code */
1418         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1419         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1420                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1421
1422         if (wpabuf_tailroom(resp) >=
1423             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1424                 /* Response Data */
1425                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1426                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1427         }
1428         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1429 }
1430
1431
1432 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1433                              struct wpabuf *resp, u8 srv_trans_id)
1434 {
1435         struct p2p_srv_upnp *usrv;
1436         u8 *len_pos;
1437
1438         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1439
1440         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1441                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1442                 return;
1443         }
1444
1445         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1446                          struct p2p_srv_upnp, list) {
1447                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1448                         return;
1449
1450                 /* Length (to be filled) */
1451                 len_pos = wpabuf_put(resp, 2);
1452                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1453                 wpabuf_put_u8(resp, srv_trans_id);
1454
1455                 /* Status Code */
1456                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1457                 /* Response Data */
1458                 wpabuf_put_u8(resp, usrv->version);
1459                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1460                            usrv->service);
1461                 wpabuf_put_str(resp, usrv->service);
1462                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1463                              2);
1464         }
1465 }
1466
1467
1468 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1469                              struct wpabuf *resp, u8 srv_trans_id,
1470                              const u8 *query, size_t query_len)
1471 {
1472         struct p2p_srv_upnp *usrv;
1473         u8 *len_pos;
1474         u8 version;
1475         char *str;
1476         int count = 0;
1477
1478         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1479                           query, query_len);
1480
1481         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1482                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1483                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1484                                             srv_trans_id);
1485                 return;
1486         }
1487
1488         if (query_len == 0) {
1489                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1490                 return;
1491         }
1492
1493         if (wpabuf_tailroom(resp) < 5)
1494                 return;
1495
1496         /* Length (to be filled) */
1497         len_pos = wpabuf_put(resp, 2);
1498         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1499         wpabuf_put_u8(resp, srv_trans_id);
1500
1501         version = query[0];
1502         str = os_malloc(query_len);
1503         if (str == NULL)
1504                 return;
1505         os_memcpy(str, query + 1, query_len - 1);
1506         str[query_len - 1] = '\0';
1507
1508         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1509                          struct p2p_srv_upnp, list) {
1510                 if (version != usrv->version)
1511                         continue;
1512
1513                 if (os_strcmp(str, "ssdp:all") != 0 &&
1514                     os_strstr(usrv->service, str) == NULL)
1515                         continue;
1516
1517                 if (wpabuf_tailroom(resp) < 2)
1518                         break;
1519                 if (count == 0) {
1520                         /* Status Code */
1521                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1522                         /* Response Data */
1523                         wpabuf_put_u8(resp, version);
1524                 } else
1525                         wpabuf_put_u8(resp, ',');
1526
1527                 count++;
1528
1529                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1530                            usrv->service);
1531                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1532                         break;
1533                 wpabuf_put_str(resp, usrv->service);
1534         }
1535         os_free(str);
1536
1537         if (count == 0) {
1538                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1539                            "available");
1540                 /* Status Code */
1541                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1542                 /* Response Data: empty */
1543         }
1544
1545         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1546 }
1547
1548
1549 #ifdef CONFIG_WIFI_DISPLAY
1550 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1551                             struct wpabuf *resp, u8 srv_trans_id,
1552                             const u8 *query, size_t query_len)
1553 {
1554         const u8 *pos;
1555         u8 role;
1556         u8 *len_pos;
1557
1558         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1559
1560         if (!wpa_s->global->wifi_display) {
1561                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1562                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1563                                             srv_trans_id);
1564                 return;
1565         }
1566
1567         if (query_len < 1) {
1568                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1569                            "Role");
1570                 return;
1571         }
1572
1573         if (wpabuf_tailroom(resp) < 5)
1574                 return;
1575
1576         pos = query;
1577         role = *pos++;
1578         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1579
1580         /* TODO: role specific handling */
1581
1582         /* Length (to be filled) */
1583         len_pos = wpabuf_put(resp, 2);
1584         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1585         wpabuf_put_u8(resp, srv_trans_id);
1586         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1587
1588         while (pos < query + query_len) {
1589                 if (*pos < MAX_WFD_SUBELEMS &&
1590                     wpa_s->global->wfd_subelem[*pos] &&
1591                     wpabuf_tailroom(resp) >=
1592                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1593                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1594                                    "subelement %u", *pos);
1595                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1596                 }
1597                 pos++;
1598         }
1599
1600         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1601 }
1602 #endif /* CONFIG_WIFI_DISPLAY */
1603
1604
1605 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1606                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1607 {
1608         struct wpa_supplicant *wpa_s = ctx;
1609         const u8 *pos = tlvs;
1610         const u8 *end = tlvs + tlvs_len;
1611         const u8 *tlv_end;
1612         u16 slen;
1613         struct wpabuf *resp;
1614         u8 srv_proto, srv_trans_id;
1615         size_t buf_len;
1616         char *buf;
1617
1618         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1619                     tlvs, tlvs_len);
1620         buf_len = 2 * tlvs_len + 1;
1621         buf = os_malloc(buf_len);
1622         if (buf) {
1623                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1624                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1625                              MACSTR " %u %u %s",
1626                              freq, MAC2STR(sa), dialog_token, update_indic,
1627                              buf);
1628                 os_free(buf);
1629         }
1630
1631         if (wpa_s->p2p_sd_over_ctrl_iface) {
1632                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1633                                            update_indic, tlvs, tlvs_len);
1634                 return; /* to be processed by an external program */
1635         }
1636
1637         resp = wpabuf_alloc(10000);
1638         if (resp == NULL)
1639                 return;
1640
1641         while (pos + 1 < end) {
1642                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1643                 slen = WPA_GET_LE16(pos);
1644                 pos += 2;
1645                 if (pos + slen > end || slen < 2) {
1646                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1647                                    "length");
1648                         wpabuf_free(resp);
1649                         return;
1650                 }
1651                 tlv_end = pos + slen;
1652
1653                 srv_proto = *pos++;
1654                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1655                            srv_proto);
1656                 srv_trans_id = *pos++;
1657                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1658                            srv_trans_id);
1659
1660                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1661                             pos, tlv_end - pos);
1662
1663
1664                 if (wpa_s->force_long_sd) {
1665                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1666                                    "response");
1667                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1668                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1669                         goto done;
1670                 }
1671
1672                 switch (srv_proto) {
1673                 case P2P_SERV_ALL_SERVICES:
1674                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1675                                    "for all services");
1676                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1677                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1678                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1679                                            "discovery protocols available");
1680                                 wpas_sd_add_proto_not_avail(
1681                                         resp, P2P_SERV_ALL_SERVICES,
1682                                         srv_trans_id);
1683                                 break;
1684                         }
1685                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1686                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1687                         break;
1688                 case P2P_SERV_BONJOUR:
1689                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1690                                             pos, tlv_end - pos);
1691                         break;
1692                 case P2P_SERV_UPNP:
1693                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1694                                          pos, tlv_end - pos);
1695                         break;
1696 #ifdef CONFIG_WIFI_DISPLAY
1697                 case P2P_SERV_WIFI_DISPLAY:
1698                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1699                                         pos, tlv_end - pos);
1700                         break;
1701 #endif /* CONFIG_WIFI_DISPLAY */
1702                 default:
1703                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1704                                    "protocol %u", srv_proto);
1705                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1706                                                     srv_trans_id);
1707                         break;
1708                 }
1709
1710                 pos = tlv_end;
1711         }
1712
1713 done:
1714         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1715                                    update_indic, tlvs, tlvs_len);
1716
1717         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1718
1719         wpabuf_free(resp);
1720 }
1721
1722
1723 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1724                       const u8 *tlvs, size_t tlvs_len)
1725 {
1726         struct wpa_supplicant *wpa_s = ctx;
1727         const u8 *pos = tlvs;
1728         const u8 *end = tlvs + tlvs_len;
1729         const u8 *tlv_end;
1730         u16 slen;
1731         size_t buf_len;
1732         char *buf;
1733
1734         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1735                     tlvs, tlvs_len);
1736         if (tlvs_len > 1500) {
1737                 /* TODO: better way for handling this */
1738                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1739                              P2P_EVENT_SERV_DISC_RESP MACSTR
1740                              " %u <long response: %u bytes>",
1741                              MAC2STR(sa), update_indic,
1742                              (unsigned int) tlvs_len);
1743         } else {
1744                 buf_len = 2 * tlvs_len + 1;
1745                 buf = os_malloc(buf_len);
1746                 if (buf) {
1747                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1748                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1749                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1750                                      MAC2STR(sa), update_indic, buf);
1751                         os_free(buf);
1752                 }
1753         }
1754
1755         while (pos < end) {
1756                 u8 srv_proto, srv_trans_id, status;
1757
1758                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1759                 slen = WPA_GET_LE16(pos);
1760                 pos += 2;
1761                 if (pos + slen > end || slen < 3) {
1762                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1763                                    "length");
1764                         return;
1765                 }
1766                 tlv_end = pos + slen;
1767
1768                 srv_proto = *pos++;
1769                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1770                            srv_proto);
1771                 srv_trans_id = *pos++;
1772                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1773                            srv_trans_id);
1774                 status = *pos++;
1775                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1776                            status);
1777
1778                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1779                             pos, tlv_end - pos);
1780
1781                 pos = tlv_end;
1782         }
1783
1784         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1785 }
1786
1787
1788 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1789                         const struct wpabuf *tlvs)
1790 {
1791         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1792                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1793         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1794                 return 0;
1795         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1796 }
1797
1798
1799 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1800                              u8 version, const char *query)
1801 {
1802         struct wpabuf *tlvs;
1803         u64 ret;
1804
1805         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1806         if (tlvs == NULL)
1807                 return 0;
1808         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1809         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1810         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1811         wpabuf_put_u8(tlvs, version);
1812         wpabuf_put_str(tlvs, query);
1813         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1814         wpabuf_free(tlvs);
1815         return ret;
1816 }
1817
1818
1819 #ifdef CONFIG_WIFI_DISPLAY
1820
1821 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1822                                    const struct wpabuf *tlvs)
1823 {
1824         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1825                 return 0;
1826         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1827                 return 0;
1828         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1829 }
1830
1831
1832 #define MAX_WFD_SD_SUBELEMS 20
1833
1834 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1835                                 const char *subelems)
1836 {
1837         u8 *len;
1838         const char *pos;
1839         int val;
1840         int count = 0;
1841
1842         len = wpabuf_put(tlvs, 2);
1843         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1844         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1845
1846         wpabuf_put_u8(tlvs, role);
1847
1848         pos = subelems;
1849         while (*pos) {
1850                 val = atoi(pos);
1851                 if (val >= 0 && val < 256) {
1852                         wpabuf_put_u8(tlvs, val);
1853                         count++;
1854                         if (count == MAX_WFD_SD_SUBELEMS)
1855                                 break;
1856                 }
1857                 pos = os_strchr(pos + 1, ',');
1858                 if (pos == NULL)
1859                         break;
1860                 pos++;
1861         }
1862
1863         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1864 }
1865
1866
1867 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1868                                      const u8 *dst, const char *role)
1869 {
1870         struct wpabuf *tlvs;
1871         u64 ret;
1872         const char *subelems;
1873         u8 id = 1;
1874
1875         subelems = os_strchr(role, ' ');
1876         if (subelems == NULL)
1877                 return 0;
1878         subelems++;
1879
1880         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1881         if (tlvs == NULL)
1882                 return 0;
1883
1884         if (os_strstr(role, "[source]"))
1885                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1886         if (os_strstr(role, "[pri-sink]"))
1887                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1888         if (os_strstr(role, "[sec-sink]"))
1889                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1890         if (os_strstr(role, "[source+sink]"))
1891                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1892
1893         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1894         wpabuf_free(tlvs);
1895         return ret;
1896 }
1897
1898 #endif /* CONFIG_WIFI_DISPLAY */
1899
1900
1901 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1902 {
1903         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1904                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1905         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1906                 return -1;
1907         return p2p_sd_cancel_request(wpa_s->global->p2p,
1908                                      (void *) (uintptr_t) req);
1909 }
1910
1911
1912 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1913                           const u8 *dst, u8 dialog_token,
1914                           const struct wpabuf *resp_tlvs)
1915 {
1916         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1917                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1918                                         resp_tlvs);
1919                 return;
1920         }
1921         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1922                 return;
1923         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1924                         resp_tlvs);
1925 }
1926
1927 #ifdef ANDROID_P2P
1928 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1929 #else
1930 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1931 #endif
1932 {
1933         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1934                 wpa_drv_p2p_service_update(wpa_s);
1935                 return;
1936         }
1937         if (wpa_s->global->p2p)
1938 #ifdef ANDROID_P2P
1939                 p2p_sd_service_update(wpa_s->global->p2p, action);
1940 #else
1941                 p2p_sd_service_update(wpa_s->global->p2p);
1942 #endif
1943 }
1944
1945
1946 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1947 {
1948         dl_list_del(&bsrv->list);
1949         wpabuf_free(bsrv->query);
1950         wpabuf_free(bsrv->resp);
1951         os_free(bsrv);
1952 }
1953
1954
1955 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1956 {
1957         dl_list_del(&usrv->list);
1958         os_free(usrv->service);
1959         os_free(usrv);
1960 }
1961
1962
1963 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1964 {
1965         struct p2p_srv_bonjour *bsrv, *bn;
1966         struct p2p_srv_upnp *usrv, *un;
1967
1968         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1969                               struct p2p_srv_bonjour, list)
1970                 wpas_p2p_srv_bonjour_free(bsrv);
1971
1972         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1973                               struct p2p_srv_upnp, list)
1974                 wpas_p2p_srv_upnp_free(usrv);
1975
1976 #ifdef ANDROID_P2P
1977         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1978 #else
1979         wpas_p2p_sd_service_update(wpa_s);
1980 #endif
1981 }
1982
1983
1984 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1985                                  struct wpabuf *query, struct wpabuf *resp)
1986 {
1987         struct p2p_srv_bonjour *bsrv;
1988
1989         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1990         if (bsrv) {
1991                 wpabuf_free(query);
1992                 wpabuf_free(bsrv->resp);
1993                 bsrv->resp = resp;
1994                 return 0;
1995         }
1996
1997         bsrv = os_zalloc(sizeof(*bsrv));
1998         if (bsrv == NULL)
1999                 return -1;
2000         bsrv->query = query;
2001         bsrv->resp = resp;
2002         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2003
2004 #ifdef ANDROID_P2P
2005         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2006 #else
2007         wpas_p2p_sd_service_update(wpa_s);
2008 #endif
2009         return 0;
2010 }
2011
2012
2013 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2014                                  const struct wpabuf *query)
2015 {
2016         struct p2p_srv_bonjour *bsrv;
2017
2018         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2019         if (bsrv == NULL)
2020                 return -1;
2021         wpas_p2p_srv_bonjour_free(bsrv);
2022 #ifdef ANDROID_P2P
2023         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2024 #else
2025         wpas_p2p_sd_service_update(wpa_s);
2026 #endif
2027         return 0;
2028 }
2029
2030
2031 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2032                               const char *service)
2033 {
2034         struct p2p_srv_upnp *usrv;
2035
2036         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2037                 return 0; /* Already listed */
2038         usrv = os_zalloc(sizeof(*usrv));
2039         if (usrv == NULL)
2040                 return -1;
2041         usrv->version = version;
2042         usrv->service = os_strdup(service);
2043         if (usrv->service == NULL) {
2044                 os_free(usrv);
2045                 return -1;
2046         }
2047         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2048
2049 #ifdef ANDROID_P2P
2050         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2051 #else
2052         wpas_p2p_sd_service_update(wpa_s);
2053 #endif
2054         return 0;
2055 }
2056
2057
2058 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2059                               const char *service)
2060 {
2061         struct p2p_srv_upnp *usrv;
2062
2063         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2064         if (usrv == NULL)
2065                 return -1;
2066         wpas_p2p_srv_upnp_free(usrv);
2067 #ifdef ANDROID_P2P
2068         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2069 #else
2070         wpas_p2p_sd_service_update(wpa_s);
2071 #endif
2072         return 0;
2073 }
2074
2075
2076 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2077                                          const u8 *peer, const char *params,
2078                                          unsigned int generated_pin)
2079 {
2080         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2081                 MAC2STR(peer), generated_pin, params);
2082 }
2083
2084
2085 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2086                                         const u8 *peer, const char *params)
2087 {
2088         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2089                 MAC2STR(peer), params);
2090 }
2091
2092
2093 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2094                         const u8 *dev_addr, const u8 *pri_dev_type,
2095                         const char *dev_name, u16 supp_config_methods,
2096                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2097                         size_t group_id_len)
2098 {
2099         struct wpa_supplicant *wpa_s = ctx;
2100         char devtype[WPS_DEV_TYPE_BUFSIZE];
2101         char params[300];
2102         u8 empty_dev_type[8];
2103         unsigned int generated_pin = 0;
2104         struct wpa_supplicant *group = NULL;
2105
2106         if (group_id) {
2107                 for (group = wpa_s->global->ifaces; group; group = group->next)
2108                 {
2109                         struct wpa_ssid *s = group->current_ssid;
2110                         if (s != NULL &&
2111                             s->mode == WPAS_MODE_P2P_GO &&
2112                             group_id_len - ETH_ALEN == s->ssid_len &&
2113                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2114                                       s->ssid_len) == 0)
2115                                 break;
2116                 }
2117         }
2118
2119         if (pri_dev_type == NULL) {
2120                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2121                 pri_dev_type = empty_dev_type;
2122         }
2123         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2124                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2125                     "dev_capab=0x%x group_capab=0x%x%s%s",
2126                     MAC2STR(dev_addr),
2127                     wps_dev_type_bin2str(pri_dev_type, devtype,
2128                                          sizeof(devtype)),
2129                     dev_name, supp_config_methods, dev_capab, group_capab,
2130                     group ? " group=" : "",
2131                     group ? group->ifname : "");
2132         params[sizeof(params) - 1] = '\0';
2133
2134         if (config_methods & WPS_CONFIG_DISPLAY) {
2135                 generated_pin = wps_generate_pin();
2136                 wpas_prov_disc_local_display(wpa_s, peer, params,
2137                                              generated_pin);
2138         } else if (config_methods & WPS_CONFIG_KEYPAD)
2139                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2140         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2141                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2142                         "%s", MAC2STR(peer), params);
2143
2144         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2145                                             P2P_PROV_DISC_SUCCESS,
2146                                             config_methods, generated_pin);
2147 }
2148
2149
2150 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2151 {
2152         struct wpa_supplicant *wpa_s = ctx;
2153         unsigned int generated_pin = 0;
2154         char params[20];
2155
2156         if (wpa_s->pending_pd_before_join &&
2157             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2158              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2159                 wpa_s->pending_pd_before_join = 0;
2160                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2161                            "join-existing-group operation");
2162                 wpas_p2p_join_start(wpa_s);
2163                 return;
2164         }
2165
2166         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2167             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2168                 os_snprintf(params, sizeof(params), " peer_go=%d",
2169                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2170         else
2171                 params[0] = '\0';
2172
2173         if (config_methods & WPS_CONFIG_DISPLAY)
2174                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2175         else if (config_methods & WPS_CONFIG_KEYPAD) {
2176                 generated_pin = wps_generate_pin();
2177                 wpas_prov_disc_local_display(wpa_s, peer, params,
2178                                              generated_pin);
2179         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2180                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2181                         "%s", MAC2STR(peer), params);
2182
2183         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2184                                             P2P_PROV_DISC_SUCCESS,
2185                                             config_methods, generated_pin);
2186 }
2187
2188
2189 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2190                                 enum p2p_prov_disc_status status)
2191 {
2192         struct wpa_supplicant *wpa_s = ctx;
2193
2194         if (wpa_s->p2p_fallback_to_go_neg) {
2195                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2196                         "failed - fall back to GO Negotiation");
2197                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2198                 return;
2199         }
2200
2201 #ifdef ANDROID_P2P
2202         /* If provision discovery failed it is safe to cancel the timer here and
2203          * also do not start the join */
2204         if (wpa_s->pending_pd_before_join &&
2205             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2206              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2207                 wpa_s->pending_pd_before_join = 0;
2208                 wpa_printf(MSG_DEBUG, "P2P: Do not Start pending "
2209                            "join-existing-group operation");
2210                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2211         }
2212 #endif /* ANDROID_P2P */
2213         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2214                 " p2p_dev_addr=" MACSTR " status=%d",
2215                 MAC2STR(peer), status);
2216
2217         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2218                                             status, 0, 0);
2219 }
2220
2221
2222 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2223                                   const u8 *go_dev_addr, const u8 *ssid,
2224                                   size_t ssid_len, int *go, u8 *group_bssid,
2225                                   int *force_freq, int persistent_group)
2226 {
2227         struct wpa_supplicant *wpa_s = ctx;
2228         struct wpa_ssid *s;
2229         u8 cur_bssid[ETH_ALEN];
2230         int res;
2231         struct wpa_supplicant *grp;
2232
2233         if (!persistent_group) {
2234                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2235                            " to join an active group", MAC2STR(sa));
2236                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2237                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2238                      == 0 ||
2239                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2240                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2241                                    "authorized invitation");
2242                         goto accept_inv;
2243                 }
2244                 /*
2245                  * Do not accept the invitation automatically; notify user and
2246                  * request approval.
2247                  */
2248                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2249         }
2250
2251         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2252         if (grp) {
2253                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2254                            "running persistent group");
2255                 if (*go)
2256                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2257                 goto accept_inv;
2258         }
2259
2260         if (!wpa_s->conf->persistent_reconnect)
2261                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2262
2263         for (s = wpa_s->conf->ssid; s; s = s->next) {
2264                 if (s->disabled == 2 &&
2265                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2266                     s->ssid_len == ssid_len &&
2267                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2268                         break;
2269         }
2270
2271         if (!s) {
2272                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2273                            " requested reinvocation of an unknown group",
2274                            MAC2STR(sa));
2275                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2276         }
2277
2278         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2279                 *go = 1;
2280                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2281                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2282                                    "interface is already in use - reject "
2283                                    "invitation");
2284                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2285                 }
2286                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2287         } else if (s->mode == WPAS_MODE_P2P_GO) {
2288                 *go = 1;
2289                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2290                 {
2291                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2292                                    "interface address for the group");
2293                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2294                 }
2295                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2296                           ETH_ALEN);
2297         }
2298
2299 accept_inv:
2300         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2301             wpa_s->assoc_freq) {
2302                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2303                            "the channel we are already using");
2304                 *force_freq = wpa_s->assoc_freq;
2305         }
2306
2307         res = wpa_drv_shared_freq(wpa_s);
2308         if (res > 0) {
2309                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2310                            "with the channel we are already using on a "
2311                            "shared interface");
2312                 *force_freq = res;
2313         }
2314
2315         return P2P_SC_SUCCESS;
2316 }
2317
2318
2319 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2320                                      const u8 *ssid, size_t ssid_len,
2321                                      const u8 *go_dev_addr, u8 status,
2322                                      int op_freq)
2323 {
2324         struct wpa_supplicant *wpa_s = ctx;
2325         struct wpa_ssid *s;
2326
2327         for (s = wpa_s->conf->ssid; s; s = s->next) {
2328                 if (s->disabled == 2 &&
2329                     s->ssid_len == ssid_len &&
2330                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2331                         break;
2332         }
2333
2334         if (status == P2P_SC_SUCCESS) {
2335                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2336                            " was accepted; op_freq=%d MHz",
2337                            MAC2STR(sa), op_freq);
2338                 if (s) {
2339                         wpas_p2p_group_add_persistent(
2340                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
2341                 } else if (bssid) {
2342                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2343                                       wpa_s->p2p_wps_method, 0);
2344                 }
2345                 return;
2346         }
2347
2348         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2349                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2350                            " was rejected (status %u)", MAC2STR(sa), status);
2351                 return;
2352         }
2353
2354         if (!s) {
2355                 if (bssid) {
2356                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2357                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2358                                 " bssid=" MACSTR " unknown-network",
2359                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2360                                 MAC2STR(bssid));
2361                 } else {
2362                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2363                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2364                                 " unknown-network",
2365                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2366                 }
2367                 return;
2368         }
2369
2370         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2371                 " persistent=%d", MAC2STR(sa), s->id);
2372 }
2373
2374
2375 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2376 {
2377         struct wpa_supplicant *wpa_s = ctx;
2378         struct wpa_ssid *ssid;
2379
2380         if (bssid) {
2381                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2382                         "status=%d " MACSTR,
2383                         status, MAC2STR(bssid));
2384         } else {
2385                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2386                         "status=%d ", status);
2387         }
2388         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2389
2390         if (wpa_s->pending_invite_ssid_id == -1)
2391                 return; /* Invitation to active group */
2392
2393         if (status != P2P_SC_SUCCESS) {
2394                 wpas_p2p_remove_pending_group_interface(wpa_s);
2395                 return;
2396         }
2397
2398         ssid = wpa_config_get_network(wpa_s->conf,
2399                                       wpa_s->pending_invite_ssid_id);
2400         if (ssid == NULL) {
2401                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2402                            "data matching with invitation");
2403                 return;
2404         }
2405
2406         wpas_p2p_group_add_persistent(wpa_s, ssid,
2407                                       ssid->mode == WPAS_MODE_P2P_GO,
2408                                       wpa_s->p2p_persistent_go_freq,
2409                                       wpa_s->p2p_go_ht40);
2410 }
2411
2412
2413 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2414                                     unsigned int freq)
2415 {
2416         unsigned int i;
2417
2418         if (global->p2p_disallow_freq == NULL)
2419                 return 0;
2420
2421         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2422                 if (freq >= global->p2p_disallow_freq[i].min &&
2423                     freq <= global->p2p_disallow_freq[i].max)
2424                         return 1;
2425         }
2426
2427         return 0;
2428 }
2429
2430
2431 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2432 {
2433         reg->channel[reg->channels] = chan;
2434         reg->channels++;
2435 }
2436
2437
2438 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2439                                      struct p2p_channels *chan)
2440 {
2441         int i, cla = 0;
2442
2443         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2444                    "band");
2445
2446         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2447         chan->reg_class[cla].reg_class = 81;
2448         chan->reg_class[cla].channels = 0;
2449         for (i = 0; i < 11; i++) {
2450                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2451                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2452         }
2453         if (chan->reg_class[cla].channels)
2454                 cla++;
2455
2456         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2457                    "band");
2458
2459         /* Operating class 115 - 5 GHz, channels 36-48 */
2460         chan->reg_class[cla].reg_class = 115;
2461         chan->reg_class[cla].channels = 0;
2462         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2463                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2464         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2465                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2466         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2467                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2468         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2469                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2470         if (chan->reg_class[cla].channels)
2471                 cla++;
2472
2473         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2474                    "band");
2475
2476         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2477         chan->reg_class[cla].reg_class = 124;
2478         chan->reg_class[cla].channels = 0;
2479         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2480                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2481         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2482                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2483         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2484                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2485         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2486                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2487         if (chan->reg_class[cla].channels)
2488                 cla++;
2489
2490         chan->reg_classes = cla;
2491         return 0;
2492 }
2493
2494
2495 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2496                                           u16 num_modes,
2497                                           enum hostapd_hw_mode mode)
2498 {
2499         u16 i;
2500
2501         for (i = 0; i < num_modes; i++) {
2502                 if (modes[i].mode == mode)
2503                         return &modes[i];
2504         }
2505
2506         return NULL;
2507 }
2508
2509
2510 static int has_channel(struct wpa_global *global,
2511                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2512 {
2513         int i;
2514         unsigned int freq;
2515
2516         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2517                 chan * 5;
2518         if (wpas_p2p_disallowed_freq(global, freq))
2519                 return 0;
2520
2521         for (i = 0; i < mode->num_channels; i++) {
2522                 if (mode->channels[i].chan == chan) {
2523                         if (flags)
2524                                 *flags = mode->channels[i].flag;
2525                         return !(mode->channels[i].flag &
2526                                  (HOSTAPD_CHAN_DISABLED |
2527                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2528                                   HOSTAPD_CHAN_NO_IBSS |
2529                                   HOSTAPD_CHAN_RADAR));
2530                 }
2531         }
2532
2533         return 0;
2534 }
2535
2536
2537 struct p2p_oper_class_map {
2538         enum hostapd_hw_mode mode;
2539         u8 op_class;
2540         u8 min_chan;
2541         u8 max_chan;
2542         u8 inc;
2543         enum { BW20, BW40PLUS, BW40MINUS } bw;
2544 };
2545
2546 static struct p2p_oper_class_map op_class[] = {
2547         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2548         { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2549 #if 0 /* Do not enable HT40 on 2 GHz for now */
2550         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2551         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2552 #endif
2553         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2554         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2555         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2556         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2557         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2558         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2559         { -1, 0, 0, 0, 0, BW20 }
2560 };
2561
2562
2563 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2564                                    struct hostapd_hw_modes *mode,
2565                                    u8 channel, u8 bw)
2566 {
2567         int flag;
2568
2569         if (!has_channel(wpa_s->global, mode, channel, &flag))
2570                 return -1;
2571         if (bw == BW40MINUS &&
2572             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2573              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2574                 return 0;
2575         if (bw == BW40PLUS &&
2576             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2577              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2578                 return 0;
2579         return 1;
2580 }
2581
2582
2583 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2584                                    struct p2p_channels *chan)
2585 {
2586         struct hostapd_hw_modes *mode;
2587         int cla, op;
2588
2589         if (wpa_s->hw.modes == NULL) {
2590                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2591                            "of all supported channels; assume dualband "
2592                            "support");
2593                 return wpas_p2p_default_channels(wpa_s, chan);
2594         }
2595
2596         cla = 0;
2597
2598         for (op = 0; op_class[op].op_class; op++) {
2599                 struct p2p_oper_class_map *o = &op_class[op];
2600                 u8 ch;
2601                 struct p2p_reg_class *reg = NULL;
2602
2603                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2604                 if (mode == NULL)
2605                         continue;
2606                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2607                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2608                                 continue;
2609                         if (reg == NULL) {
2610                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2611                                            "class %u", o->op_class);
2612                                 reg = &chan->reg_class[cla];
2613                                 cla++;
2614                                 reg->reg_class = o->op_class;
2615                         }
2616                         reg->channel[reg->channels] = ch;
2617                         reg->channels++;
2618                 }
2619                 if (reg) {
2620                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2621                                     reg->channel, reg->channels);
2622                 }
2623         }
2624
2625         chan->reg_classes = cla;
2626
2627         return 0;
2628 }
2629
2630
2631 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2632                            struct hostapd_hw_modes *mode, u8 channel)
2633 {
2634         int op, ret;
2635
2636         for (op = 0; op_class[op].op_class; op++) {
2637                 struct p2p_oper_class_map *o = &op_class[op];
2638                 u8 ch;
2639
2640                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2641                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2642                             o->bw == BW20 || ch != channel)
2643                                 continue;
2644                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2645                         if (ret < 0)
2646                                 continue;
2647                         else if (ret > 0)
2648                                 return (o->bw == BW40MINUS) ? -1 : 1;
2649                         else
2650                                 return 0;
2651                 }
2652         }
2653         return 0;
2654 }
2655
2656
2657 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2658                         size_t buf_len)
2659 {
2660         struct wpa_supplicant *wpa_s = ctx;
2661
2662         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2663                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2664                         break;
2665         }
2666         if (wpa_s == NULL)
2667                 return -1;
2668
2669         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2670 }
2671
2672
2673 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2674 {
2675         struct wpa_supplicant *wpa_s = ctx;
2676
2677         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2678                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2679                 if (ssid == NULL)
2680                         continue;
2681                 if (ssid->mode != WPAS_MODE_INFRA)
2682                         continue;
2683                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2684                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2685                         continue;
2686                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2687                         return 1;
2688         }
2689
2690         return 0;
2691 }
2692
2693
2694 /**
2695  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2696  * @global: Pointer to global data from wpa_supplicant_init()
2697  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2698  * Returns: 0 on success, -1 on failure
2699  */
2700 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2701 {
2702         struct p2p_config p2p;
2703         unsigned int r;
2704         int i;
2705
2706         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2707                 return 0;
2708
2709         if (global->p2p)
2710                 return 0;
2711
2712         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2713                 struct p2p_params params;
2714
2715                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2716                 os_memset(&params, 0, sizeof(params));
2717                 params.dev_name = wpa_s->conf->device_name;
2718                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2719                           WPS_DEV_TYPE_LEN);
2720                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2721                 os_memcpy(params.sec_dev_type,
2722                           wpa_s->conf->sec_device_type,
2723                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2724
2725                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2726                         return -1;
2727
2728                 return 0;
2729         }
2730
2731         os_memset(&p2p, 0, sizeof(p2p));
2732         p2p.msg_ctx = wpa_s;
2733         p2p.cb_ctx = wpa_s;
2734         p2p.p2p_scan = wpas_p2p_scan;
2735         p2p.send_action = wpas_send_action;
2736         p2p.send_action_done = wpas_send_action_done;
2737         p2p.go_neg_completed = wpas_go_neg_completed;
2738         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2739         p2p.dev_found = wpas_dev_found;
2740         p2p.dev_lost = wpas_dev_lost;
2741         p2p.start_listen = wpas_start_listen;
2742         p2p.stop_listen = wpas_stop_listen;
2743         p2p.send_probe_resp = wpas_send_probe_resp;
2744         p2p.sd_request = wpas_sd_request;
2745         p2p.sd_response = wpas_sd_response;
2746         p2p.prov_disc_req = wpas_prov_disc_req;
2747         p2p.prov_disc_resp = wpas_prov_disc_resp;
2748         p2p.prov_disc_fail = wpas_prov_disc_fail;
2749         p2p.invitation_process = wpas_invitation_process;
2750         p2p.invitation_received = wpas_invitation_received;
2751         p2p.invitation_result = wpas_invitation_result;
2752         p2p.get_noa = wpas_get_noa;
2753         p2p.go_connected = wpas_go_connected;
2754
2755         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2756         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2757         p2p.dev_name = wpa_s->conf->device_name;
2758         p2p.manufacturer = wpa_s->conf->manufacturer;
2759         p2p.model_name = wpa_s->conf->model_name;
2760         p2p.model_number = wpa_s->conf->model_number;
2761         p2p.serial_number = wpa_s->conf->serial_number;
2762         if (wpa_s->wps) {
2763                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2764                 p2p.config_methods = wpa_s->wps->config_methods;
2765         }
2766
2767         if (wpa_s->conf->p2p_listen_reg_class &&
2768             wpa_s->conf->p2p_listen_channel) {
2769                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2770                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2771         } else {
2772                 p2p.reg_class = 81;
2773                 /*
2774                  * Pick one of the social channels randomly as the listen
2775                  * channel.
2776                  */
2777                 os_get_random((u8 *) &r, sizeof(r));
2778                 p2p.channel = 1 + (r % 3) * 5;
2779         }
2780         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2781
2782         if (wpa_s->conf->p2p_oper_reg_class &&
2783             wpa_s->conf->p2p_oper_channel) {
2784                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2785                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2786                 p2p.cfg_op_channel = 1;
2787                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2788                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2789
2790         } else {
2791                 p2p.op_reg_class = 81;
2792                 /*
2793                  * Use random operation channel from (1, 6, 11) if no other
2794                  * preference is indicated.
2795                  */
2796                 os_get_random((u8 *) &r, sizeof(r));
2797                 p2p.op_channel = 1 + (r % 3) * 5;
2798                 p2p.cfg_op_channel = 0;
2799                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2800                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2801         }
2802         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2803                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2804                 p2p.country[2] = 0x04;
2805         } else
2806                 os_memcpy(p2p.country, "XX\x04", 3);
2807
2808         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2809                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2810                            "channel list");
2811                 return -1;
2812         }
2813
2814         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2815                   WPS_DEV_TYPE_LEN);
2816
2817         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2818         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2819                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2820
2821         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2822                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2823
2824         p2p.max_peers = 100;
2825
2826         if (wpa_s->conf->p2p_ssid_postfix) {
2827                 p2p.ssid_postfix_len =
2828                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2829                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2830                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2831                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2832                           p2p.ssid_postfix_len);
2833         }
2834
2835         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2836
2837 #ifdef ANDROID_P2P
2838         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
2839                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2840         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)
2841                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2842 #endif
2843
2844         global->p2p = p2p_init(&p2p);
2845         if (global->p2p == NULL)
2846                 return -1;
2847         global->p2p_init_wpa_s = wpa_s;
2848
2849         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2850                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2851                         continue;
2852                 p2p_add_wps_vendor_extension(
2853                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2854         }
2855
2856         return 0;
2857 }
2858
2859
2860 /**
2861  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2862  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2863  *
2864  * This function deinitialize per-interface P2P data.
2865  */
2866 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2867 {
2868         if (wpa_s->driver && wpa_s->drv_priv)
2869                 wpa_drv_probe_req_report(wpa_s, 0);
2870
2871         if (wpa_s->go_params) {
2872                 /* Clear any stored provisioning info */
2873                 p2p_clear_provisioning_info(
2874                         wpa_s->global->p2p,
2875                         wpa_s->go_params->peer_device_addr);
2876         }
2877
2878         os_free(wpa_s->go_params);
2879         wpa_s->go_params = NULL;
2880         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2881         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2882         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2883         wpa_s->p2p_long_listen = 0;
2884         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2885         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2886         wpas_p2p_remove_pending_group_interface(wpa_s);
2887
2888         /* TODO: remove group interface from the driver if this wpa_s instance
2889          * is on top of a P2P group interface */
2890 }
2891
2892
2893 /**
2894  * wpas_p2p_deinit_global - Deinitialize global P2P module
2895  * @global: Pointer to global data from wpa_supplicant_init()
2896  *
2897  * This function deinitializes the global (per device) P2P module.
2898  */
2899 void wpas_p2p_deinit_global(struct wpa_global *global)
2900 {
2901         struct wpa_supplicant *wpa_s, *tmp;
2902
2903         wpa_s = global->ifaces;
2904         if (wpa_s)
2905                 wpas_p2p_service_flush(wpa_s);
2906
2907         if (global->p2p == NULL)
2908                 return;
2909
2910         /* Remove remaining P2P group interfaces */
2911         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2912                 wpa_s = wpa_s->next;
2913         while (wpa_s) {
2914                 tmp = global->ifaces;
2915                 while (tmp &&
2916                        (tmp == wpa_s ||
2917                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2918                         tmp = tmp->next;
2919                 }
2920                 if (tmp == NULL)
2921                         break;
2922                 /* Disconnect from the P2P group and deinit the interface */
2923                 wpas_p2p_disconnect(tmp);
2924         }
2925
2926         /*
2927          * Deinit GO data on any possibly remaining interface (if main
2928          * interface is used as GO).
2929          */
2930         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2931                 if (wpa_s->ap_iface)
2932                         wpas_p2p_group_deinit(wpa_s);
2933         }
2934
2935         p2p_deinit(global->p2p);
2936         global->p2p = NULL;
2937         global->p2p_init_wpa_s = NULL;
2938 }
2939
2940
2941 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2942 {
2943         if (wpa_s->drv_flags &
2944             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2945              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2946                 return 1; /* P2P group requires a new interface in every case
2947                            */
2948         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2949                 return 0; /* driver does not support concurrent operations */
2950         if (wpa_s->global->ifaces->next)
2951                 return 1; /* more that one interface already in use */
2952         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2953                 return 1; /* this interface is already in use */
2954         return 0;
2955 }
2956
2957
2958 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2959                                  const u8 *peer_addr,
2960                                  enum p2p_wps_method wps_method,
2961                                  int go_intent, const u8 *own_interface_addr,
2962                                  unsigned int force_freq, int persistent_group,
2963                                  struct wpa_ssid *ssid)
2964 {
2965         if (persistent_group && wpa_s->conf->persistent_reconnect)
2966                 persistent_group = 2;
2967
2968         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2969                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2970                                            go_intent, own_interface_addr,
2971                                            force_freq, persistent_group);
2972         }
2973
2974         /*
2975          * Increase GO config timeout if HT40 is used since it takes some time
2976          * to scan channels for coex purposes before the BSS can be started.
2977          */
2978         p2p_set_config_timeout(wpa_s->global->p2p,
2979                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2980
2981         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2982                            go_intent, own_interface_addr, force_freq,
2983                            persistent_group, ssid ? ssid->ssid : NULL,
2984                            ssid ? ssid->ssid_len : 0,
2985                            wpa_s->p2p_pd_before_go_neg);
2986 }
2987
2988
2989 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2990                                 const u8 *peer_addr,
2991                                 enum p2p_wps_method wps_method,
2992                                 int go_intent, const u8 *own_interface_addr,
2993                                 unsigned int force_freq, int persistent_group,
2994                                 struct wpa_ssid *ssid)
2995 {
2996         if (persistent_group && wpa_s->conf->persistent_reconnect)
2997                 persistent_group = 2;
2998
2999         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3000                 return -1;
3001
3002         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3003                              go_intent, own_interface_addr, force_freq,
3004                              persistent_group, ssid ? ssid->ssid : NULL,
3005                              ssid ? ssid->ssid_len : 0);
3006 }
3007
3008
3009 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3010 {
3011         wpa_s->p2p_join_scan_count++;
3012         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3013                    wpa_s->p2p_join_scan_count);
3014         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3015                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3016                            " for join operationg - stop join attempt",
3017                            MAC2STR(wpa_s->pending_join_iface_addr));
3018                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3019                 if (wpa_s->p2p_auto_pd) {
3020                         wpa_s->p2p_auto_pd = 0;
3021                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3022                                 " p2p_dev_addr=" MACSTR " status=N/A",
3023                                 MAC2STR(wpa_s->pending_join_dev_addr));
3024                         return;
3025                 }
3026                 wpa_msg(wpa_s->parent, MSG_INFO,
3027                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3028         }
3029 }
3030
3031
3032 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3033 {
3034         struct wpa_supplicant *wpa_s = eloop_ctx;
3035         if (!wpa_s->pending_pd_before_join)
3036                 return;
3037         /*
3038          * Provision Discovery Response may have been lost - try to connect
3039          * anyway since we do not need any information from this PD.
3040          */
3041         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3042                    "try to connect anyway");
3043         wpas_p2p_join_start(wpa_s);
3044 }
3045
3046
3047 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3048 {
3049         struct wpa_supplicant *iface;
3050         int shared_freq;
3051         u8 bssid[ETH_ALEN];
3052
3053         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3054                 return 0;
3055
3056         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3057                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3058                         continue;
3059                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3060                         continue;
3061                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3062                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3063                         shared_freq = iface->current_ssid->frequency;
3064                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3065                         shared_freq = iface->assoc_freq;
3066                 else
3067                         shared_freq = 0;
3068
3069                 if (shared_freq && freq != shared_freq) {
3070                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3071                                    "connected on %d MHz - new connection on "
3072                                    "%d MHz", iface->ifname, shared_freq, freq);
3073                         return 1;
3074                 }
3075         }
3076
3077         shared_freq = wpa_drv_shared_freq(wpa_s);
3078         if (shared_freq > 0 && shared_freq != freq) {
3079                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3080                            "virtual interface connected on %d MHz - new "
3081                            "connection on %d MHz", shared_freq, freq);
3082                 return 1;
3083         }
3084
3085         return 0;
3086 }
3087
3088
3089 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3090                             const u8 *peer_dev_addr)
3091 {
3092         struct wpa_bss *bss;
3093         int updated;
3094
3095         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3096         if (bss == NULL)
3097                 return -1;
3098         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3099                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3100                            "last scan");
3101                 return 0;
3102         }
3103
3104         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3105         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3106                    "%ld.%06ld (%supdated in last scan)",
3107                    bss->last_update.sec, bss->last_update.usec,
3108                    updated ? "": "not ");
3109
3110         return updated;
3111 }
3112
3113
3114 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3115                                    struct wpa_scan_results *scan_res)
3116 {
3117         struct wpa_bss *bss;
3118         int freq;
3119         u8 iface_addr[ETH_ALEN];
3120
3121         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3122
3123         if (wpa_s->global->p2p_disabled)
3124                 return;
3125
3126         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3127                    scan_res ? (int) scan_res->num : -1,
3128                    wpa_s->p2p_auto_join ? "auto_" : "");
3129
3130         if (scan_res)
3131                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3132
3133         if (wpa_s->p2p_auto_pd) {
3134                 int join = wpas_p2p_peer_go(wpa_s,
3135                                             wpa_s->pending_join_dev_addr);
3136                 if (join == 0 &&
3137                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3138                         wpa_s->auto_pd_scan_retry++;
3139                         bss = wpa_bss_get_bssid(wpa_s,
3140                                                 wpa_s->pending_join_dev_addr);
3141                         if (bss) {
3142                                 freq = bss->freq;
3143                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3144                                            "the peer " MACSTR " at %d MHz",
3145                                            wpa_s->auto_pd_scan_retry,
3146                                            MAC2STR(wpa_s->
3147                                                    pending_join_dev_addr),
3148                                            freq);
3149                                 wpas_p2p_join_scan_req(wpa_s, freq);
3150                                 return;
3151                         }
3152                 }
3153
3154                 if (join < 0)
3155                         join = 0;
3156
3157                 wpa_s->p2p_auto_pd = 0;
3158                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3159                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3160                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3161                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3162                                       wpa_s->pending_join_dev_addr,
3163                                       wpa_s->pending_pd_config_methods, join,
3164                                       0) < 0) {
3165                         wpa_s->p2p_auto_pd = 0;
3166                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3167                                 " p2p_dev_addr=" MACSTR " status=N/A",
3168                                 MAC2STR(wpa_s->pending_join_dev_addr));
3169                 }
3170                 return;
3171         }
3172
3173         if (wpa_s->p2p_auto_join) {
3174                 int join = wpas_p2p_peer_go(wpa_s,
3175                                             wpa_s->pending_join_dev_addr);
3176                 if (join < 0) {
3177                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3178                                    "running a GO -> use GO Negotiation");
3179                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3180                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3181                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3182                                          wpa_s->p2p_go_intent,
3183                                          wpa_s->p2p_connect_freq,
3184                                          wpa_s->p2p_persistent_id,
3185                                          wpa_s->p2p_pd_before_go_neg,
3186                                          wpa_s->p2p_go_ht40);
3187                         return;
3188                 }
3189
3190                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3191                            "try to join the group", join ? "" :
3192                            " in older scan");
3193                 if (!join)
3194                         wpa_s->p2p_fallback_to_go_neg = 1;
3195         }
3196
3197         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3198                                  wpa_s->pending_join_iface_addr);
3199         if (freq < 0 &&
3200             p2p_get_interface_addr(wpa_s->global->p2p,
3201                                    wpa_s->pending_join_dev_addr,
3202                                    iface_addr) == 0 &&
3203             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3204         {
3205                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3206                            "address for join from " MACSTR " to " MACSTR
3207                            " based on newly discovered P2P peer entry",
3208                            MAC2STR(wpa_s->pending_join_iface_addr),
3209                            MAC2STR(iface_addr));
3210                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3211                           ETH_ALEN);
3212
3213                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3214                                          wpa_s->pending_join_iface_addr);
3215         }
3216         if (freq >= 0) {
3217                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3218                            "from P2P peer table: %d MHz", freq);
3219         }
3220         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3221         if (bss) {
3222                 freq = bss->freq;
3223                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3224                            "from BSS table: %d MHz", freq);
3225         }
3226         if (freq > 0) {
3227                 u16 method;
3228
3229                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3230                         wpa_msg(wpa_s->parent, MSG_INFO,
3231                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3232                                 "reason=FREQ_CONFLICT");
3233                         return;
3234                 }
3235
3236                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3237                            "prior to joining an existing group (GO " MACSTR
3238                            " freq=%u MHz)",
3239                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3240                 wpa_s->pending_pd_before_join = 1;
3241
3242                 switch (wpa_s->pending_join_wps_method) {
3243                 case WPS_PIN_DISPLAY:
3244                         method = WPS_CONFIG_KEYPAD;
3245                         break;
3246                 case WPS_PIN_KEYPAD:
3247                         method = WPS_CONFIG_DISPLAY;
3248                         break;
3249                 case WPS_PBC:
3250                         method = WPS_CONFIG_PUSHBUTTON;
3251                         break;
3252                 default:
3253                         method = 0;
3254                         break;
3255                 }
3256
3257                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3258                                                wpa_s->pending_join_dev_addr) ==
3259                      method)) {
3260                         /*
3261                          * We have already performed provision discovery for
3262                          * joining the group. Proceed directly to join
3263                          * operation without duplicated provision discovery. */
3264                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3265                                    "with " MACSTR " already done - proceed to "
3266                                    "join",
3267                                    MAC2STR(wpa_s->pending_join_dev_addr));
3268                         wpa_s->pending_pd_before_join = 0;
3269                         goto start;
3270                 }
3271
3272                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3273                                       wpa_s->pending_join_dev_addr, method, 1,
3274                                       freq) < 0) {
3275                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3276                                    "Discovery Request before joining an "
3277                                    "existing group");
3278                         wpa_s->pending_pd_before_join = 0;
3279                         goto start;
3280                 }
3281
3282                 /*
3283                  * Actual join operation will be started from the Action frame
3284                  * TX status callback (if no ACK is received) or when the
3285                  * Provision Discovery Response is received. Use a short
3286                  * timeout as a backup mechanism should the Provision Discovery
3287                  * Response be lost for any reason.
3288                  */
3289                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3290                                      NULL);
3291                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3292                                        wpa_s, NULL);
3293                 return;
3294         }
3295
3296         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3297         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3298         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3299         wpas_p2p_check_join_scan_limit(wpa_s);
3300         return;
3301
3302 start:
3303         /* Start join operation immediately */
3304         wpas_p2p_join_start(wpa_s);
3305 }
3306
3307
3308 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3309 {
3310         int ret;
3311         struct wpa_driver_scan_params params;
3312         struct wpabuf *wps_ie, *ies;
3313         size_t ielen;
3314         int freqs[2] = { 0, 0 };
3315 #ifdef ANDROID_P2P
3316         int oper_freq;
3317
3318         /* If freq is not provided, check the operating freq of the GO and do a
3319          * a directed scan to save time
3320          */
3321         if(!freq) {
3322                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3323                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3324         }
3325 #endif
3326         os_memset(&params, 0, sizeof(params));
3327
3328         /* P2P Wildcard SSID */
3329         params.num_ssids = 1;
3330         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3331         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3332
3333         wpa_s->wps->dev.p2p = 1;
3334         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3335                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3336                                         NULL);
3337         if (wps_ie == NULL) {
3338                 wpas_p2p_scan_res_join(wpa_s, NULL);
3339                 return;
3340         }
3341
3342         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3343         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3344         if (ies == NULL) {
3345                 wpabuf_free(wps_ie);
3346                 wpas_p2p_scan_res_join(wpa_s, NULL);
3347                 return;
3348         }
3349         wpabuf_put_buf(ies, wps_ie);
3350         wpabuf_free(wps_ie);
3351
3352         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3353
3354         params.p2p_probe = 1;
3355         params.extra_ies = wpabuf_head(ies);
3356         params.extra_ies_len = wpabuf_len(ies);
3357         if (freq > 0) {
3358                 freqs[0] = freq;
3359                 params.freqs = freqs;
3360         }
3361
3362         /*
3363          * Run a scan to update BSS table and start Provision Discovery once
3364          * the new scan results become available.
3365          */
3366         ret = wpa_drv_scan(wpa_s, &params);
3367         if (!ret)
3368                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3369
3370         wpabuf_free(ies);
3371
3372         if (ret) {
3373                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3374                            "try again later");
3375                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3376                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3377                 wpas_p2p_check_join_scan_limit(wpa_s);
3378         }
3379 }
3380
3381
3382 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3383 {
3384         struct wpa_supplicant *wpa_s = eloop_ctx;
3385         wpas_p2p_join_scan_req(wpa_s, 0);
3386 }
3387
3388
3389 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3390                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3391                          int auto_join)
3392 {
3393         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3394                    MACSTR " dev " MACSTR ")%s",
3395                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3396                    auto_join ? " (auto_join)" : "");
3397
3398         wpa_s->p2p_auto_pd = 0;
3399         wpa_s->p2p_auto_join = !!auto_join;
3400         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3401         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3402         wpa_s->pending_join_wps_method = wps_method;
3403
3404         /* Make sure we are not running find during connection establishment */
3405         wpas_p2p_stop_find(wpa_s);
3406
3407         wpa_s->p2p_join_scan_count = 0;
3408         wpas_p2p_join_scan(wpa_s, NULL);
3409         return 0;
3410 }
3411
3412
3413 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3414 {
3415         struct wpa_supplicant *group;
3416         struct p2p_go_neg_results res;
3417         struct wpa_bss *bss;
3418
3419         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3420         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3421         if (group == NULL)
3422                 return -1;
3423         if (group != wpa_s) {
3424                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3425                           sizeof(group->p2p_pin));
3426                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3427         }
3428
3429         group->p2p_in_provisioning = 1;
3430         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3431
3432         os_memset(&res, 0, sizeof(res));
3433         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3434                   ETH_ALEN);
3435         res.wps_method = wpa_s->pending_join_wps_method;
3436         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3437         if (bss) {
3438                 res.freq = bss->freq;
3439                 res.ssid_len = bss->ssid_len;
3440                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3441         }
3442
3443         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3444                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3445                            "starting client");
3446                 wpa_drv_cancel_remain_on_channel(wpa_s);
3447                 wpa_s->off_channel_freq = 0;
3448                 wpa_s->roc_waiting_drv_freq = 0;
3449         }
3450         wpas_start_wps_enrollee(group, &res);
3451
3452         /*
3453          * Allow a longer timeout for join-a-running-group than normal 15
3454          * second group formation timeout since the GO may not have authorized
3455          * our connection yet.
3456          */
3457         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3458         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3459                                wpa_s, NULL);
3460
3461         return 0;
3462 }
3463
3464
3465 /**
3466  * wpas_p2p_connect - Request P2P Group Formation to be started
3467  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3468  * @peer_addr: Address of the peer P2P Device
3469  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3470  * @persistent_group: Whether to create a persistent group
3471  * @auto_join: Whether to select join vs. GO Negotiation automatically
3472  * @join: Whether to join an existing group (as a client) instead of starting
3473  *      Group Owner negotiation; @peer_addr is BSSID in that case
3474  * @auth: Whether to only authorize the connection instead of doing that and
3475  *      initiating Group Owner negotiation
3476  * @go_intent: GO Intent or -1 to use default
3477  * @freq: Frequency for the group or 0 for auto-selection
3478  * @persistent_id: Persistent group credentials to use for forcing GO
3479  *      parameters or -1 to generate new values (SSID/passphrase)
3480  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3481  *      interoperability workaround when initiating group formation
3482  * @ht40: Start GO with 40 MHz channel width
3483  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3484  *      failure, -2 on failure due to channel not currently available,
3485  *      -3 if forced channel is not supported
3486  */
3487 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3488                      const char *pin, enum p2p_wps_method wps_method,
3489                      int persistent_group, int auto_join, int join, int auth,
3490                      int go_intent, int freq, int persistent_id, int pd,
3491                      int ht40)
3492 {
3493         int force_freq = 0, oper_freq = 0;
3494         u8 bssid[ETH_ALEN];
3495         int ret = 0;
3496         enum wpa_driver_if_type iftype;
3497         const u8 *if_addr;
3498         struct wpa_ssid *ssid = NULL;
3499
3500         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3501                 return -1;
3502
3503         if (persistent_id >= 0) {
3504                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3505                 if (ssid == NULL || ssid->disabled != 2 ||
3506                     ssid->mode != WPAS_MODE_P2P_GO)
3507                         return -1;
3508         }
3509
3510         if (go_intent < 0)
3511                 go_intent = wpa_s->conf->p2p_go_intent;
3512
3513         if (!auth)
3514                 wpa_s->p2p_long_listen = 0;
3515
3516         wpa_s->p2p_wps_method = wps_method;
3517         wpa_s->p2p_persistent_group = !!persistent_group;
3518         wpa_s->p2p_persistent_id = persistent_id;
3519         wpa_s->p2p_go_intent = go_intent;
3520         wpa_s->p2p_connect_freq = freq;
3521         wpa_s->p2p_fallback_to_go_neg = 0;
3522         wpa_s->p2p_pd_before_go_neg = !!pd;
3523         wpa_s->p2p_go_ht40 = !!ht40;
3524
3525         if (pin)
3526                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3527         else if (wps_method == WPS_PIN_DISPLAY) {
3528                 ret = wps_generate_pin();
3529                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3530                             ret);
3531                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3532                            wpa_s->p2p_pin);
3533         } else
3534                 wpa_s->p2p_pin[0] = '\0';
3535
3536         if (join || auto_join) {
3537                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3538                 if (auth) {
3539                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3540                                    "connect a running group from " MACSTR,
3541                                    MAC2STR(peer_addr));
3542                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3543                         return ret;
3544                 }
3545                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3546                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3547                                            iface_addr) < 0) {
3548                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3549                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3550                                          dev_addr);
3551                 }
3552                 if (auto_join) {
3553                         os_get_time(&wpa_s->p2p_auto_started);
3554                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3555                                    "%ld.%06ld",
3556                                    wpa_s->p2p_auto_started.sec,
3557                                    wpa_s->p2p_auto_started.usec);
3558                 }
3559                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3560                                   auto_join) < 0)
3561                         return -1;
3562                 return ret;
3563         }
3564
3565         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3566             wpa_s->assoc_freq)
3567                 oper_freq = wpa_s->assoc_freq;
3568         else {
3569                 oper_freq = wpa_drv_shared_freq(wpa_s);
3570                 if (oper_freq < 0)
3571                         oper_freq = 0;
3572         }
3573
3574         if (freq > 0) {
3575                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3576                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3577                                    "(%u MHz) is not supported for P2P uses",
3578                                    freq);
3579                         return -3;
3580                 }
3581
3582                 if (oper_freq > 0 && freq != oper_freq &&
3583                     !(wpa_s->drv_flags &
3584                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3585                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3586                                    "on %u MHz while connected on another "
3587                                    "channel (%u MHz)", freq, oper_freq);
3588                         return -2;
3589                 }
3590                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3591                            "requested channel (%u MHz)", freq);
3592                 force_freq = freq;
3593         } else if (oper_freq > 0 &&
3594                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3595                 if (!(wpa_s->drv_flags &
3596                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3597                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3598                                    "while connected on non-P2P supported "
3599                                    "channel (%u MHz)", oper_freq);
3600                         return -2;
3601                 }
3602                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3603                            "(%u MHz) not available for P2P - try to use "
3604                            "another channel", oper_freq);
3605                 force_freq = 0;
3606         } else if (oper_freq > 0) {
3607                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3608                            "channel we are already using (%u MHz) on another "
3609                            "interface", oper_freq);
3610                 force_freq = oper_freq;
3611         }
3612
3613         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3614
3615         if (wpa_s->create_p2p_iface) {
3616                 /* Prepare to add a new interface for the group */
3617                 iftype = WPA_IF_P2P_GROUP;
3618                 if (go_intent == 15)
3619                         iftype = WPA_IF_P2P_GO;
3620                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3621                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3622                                    "interface for the group");
3623                         return -1;
3624                 }
3625
3626                 if_addr = wpa_s->pending_interface_addr;
3627         } else
3628                 if_addr = wpa_s->own_addr;
3629
3630         if (auth) {
3631                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3632                                          go_intent, if_addr,
3633                                          force_freq, persistent_group, ssid) <
3634                     0)
3635                         return -1;
3636                 return ret;
3637         }
3638
3639         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3640                                   go_intent, if_addr, force_freq,
3641                                   persistent_group, ssid) < 0) {
3642                 if (wpa_s->create_p2p_iface)
3643                         wpas_p2p_remove_pending_group_interface(wpa_s);
3644                 return -1;
3645         }
3646         return ret;
3647 }
3648
3649
3650 /**
3651  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3652  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3653  * @freq: Frequency of the channel in MHz
3654  * @duration: Duration of the stay on the channel in milliseconds
3655  *
3656  * This callback is called when the driver indicates that it has started the
3657  * requested remain-on-channel duration.
3658  */
3659 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3660                                    unsigned int freq, unsigned int duration)
3661 {
3662         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3663                 return;
3664         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3665                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3666                               wpa_s->pending_listen_duration);
3667                 wpa_s->pending_listen_freq = 0;
3668         }
3669 }
3670
3671
3672 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3673                                  unsigned int timeout)
3674 {
3675         /* Limit maximum Listen state time based on driver limitation. */
3676         if (timeout > wpa_s->max_remain_on_chan)
3677                 timeout = wpa_s->max_remain_on_chan;
3678
3679         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3680                 return wpa_drv_p2p_listen(wpa_s, timeout);
3681
3682         return p2p_listen(wpa_s->global->p2p, timeout);
3683 }
3684
3685
3686 /**
3687  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3688  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3689  * @freq: Frequency of the channel in MHz
3690  *
3691  * This callback is called when the driver indicates that a remain-on-channel
3692  * operation has been completed, i.e., the duration on the requested channel
3693  * has timed out.
3694  */
3695 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3696                                           unsigned int freq)
3697 {
3698         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3699                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3700                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3701         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3702                 return;
3703         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3704                 return; /* P2P module started a new operation */
3705         if (wpa_s->pending_action_tx)
3706                 return;
3707         if (wpa_s->p2p_long_listen > 0)
3708                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3709         if (wpa_s->p2p_long_listen > 0) {
3710                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3711                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3712         }
3713 }
3714
3715
3716 /**
3717  * wpas_p2p_group_remove - Remove a P2P group
3718  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3719  * @ifname: Network interface name of the group interface or "*" to remove all
3720  *      groups
3721  * Returns: 0 on success, -1 on failure
3722  *
3723  * This function is used to remove a P2P group. This can be used to disconnect
3724  * from a group in which the local end is a P2P Client or to end a P2P Group in
3725  * case the local end is the Group Owner. If a virtual network interface was
3726  * created for this group, that interface will be removed. Otherwise, only the
3727  * configured P2P group network will be removed from the interface.
3728  */
3729 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3730 {
3731         struct wpa_global *global = wpa_s->global;
3732
3733         if (os_strcmp(ifname, "*") == 0) {
3734                 struct wpa_supplicant *prev;
3735                 wpa_s = global->ifaces;
3736                 while (wpa_s) {
3737                         prev = wpa_s;
3738                         wpa_s = wpa_s->next;
3739                         wpas_p2p_disconnect(prev);
3740                 }
3741                 return 0;
3742         }
3743
3744         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3745                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3746                         break;
3747         }
3748
3749         return wpas_p2p_disconnect(wpa_s);
3750 }
3751
3752
3753 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3754                                    struct p2p_go_neg_results *params,
3755                                    int freq, int ht40)
3756 {
3757         u8 bssid[ETH_ALEN];
3758         int res;
3759
3760         os_memset(params, 0, sizeof(*params));
3761         params->role_go = 1;
3762         params->ht40 = ht40;
3763         if (freq) {
3764                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3765                            "frequency %d MHz", freq);
3766                 params->freq = freq;
3767         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3768                    wpa_s->conf->p2p_oper_channel >= 1 &&
3769                    wpa_s->conf->p2p_oper_channel <= 11) {
3770                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3771                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3772                            "frequency %d MHz", params->freq);
3773         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3774                    wpa_s->conf->p2p_oper_reg_class == 124) {
3775                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3776                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3777                            "frequency %d MHz", params->freq);
3778         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3779                    wpa_s->best_overall_freq > 0 &&
3780                    p2p_supported_freq(wpa_s->global->p2p,
3781                                       wpa_s->best_overall_freq)) {
3782                 params->freq = wpa_s->best_overall_freq;
3783                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3784                            "channel %d MHz", params->freq);
3785         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3786                    wpa_s->best_24_freq > 0 &&
3787                    p2p_supported_freq(wpa_s->global->p2p,
3788                                       wpa_s->best_24_freq)) {
3789                 params->freq = wpa_s->best_24_freq;
3790                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3791                            "channel %d MHz", params->freq);
3792         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3793                    wpa_s->best_5_freq > 0 &&
3794                    p2p_supported_freq(wpa_s->global->p2p,
3795                                       wpa_s->best_5_freq)) {
3796                 params->freq = wpa_s->best_5_freq;
3797                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3798                            "channel %d MHz", params->freq);
3799         } else {
3800                 int chan;
3801                 for (chan = 0; chan < 11; chan++) {
3802                         params->freq = 2412 + chan * 5;
3803                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3804                                                       params->freq))
3805                                 break;
3806                 }
3807                 if (chan == 11) {
3808                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3809                                    "allowed");
3810                         return -1;
3811                 }
3812                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3813                            "known)", params->freq);
3814         }
3815
3816         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3817             wpa_s->assoc_freq && !freq) {
3818                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3819                            "already using");
3820                 params->freq = wpa_s->assoc_freq;
3821         }
3822
3823         res = wpa_drv_shared_freq(wpa_s);
3824         if (res > 0 && !freq) {
3825                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3826                            "already using on a shared interface");
3827                 params->freq = res;
3828         } else if (res > 0 && freq != res &&
3829                    !(wpa_s->drv_flags &
3830                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3831                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3832                            "while connected on another channel (%u MHz)",
3833                            freq, res);
3834                 return -1;
3835         }
3836
3837         return 0;
3838 }
3839
3840
3841 static struct wpa_supplicant *
3842 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3843                          int go)
3844 {
3845         struct wpa_supplicant *group_wpa_s;
3846
3847         if (!wpas_p2p_create_iface(wpa_s))
3848                 return wpa_s;
3849
3850         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3851                                          WPA_IF_P2P_CLIENT) < 0)
3852                 return NULL;
3853         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3854         if (group_wpa_s == NULL) {
3855                 wpas_p2p_remove_pending_group_interface(wpa_s);
3856                 return NULL;
3857         }
3858
3859         return group_wpa_s;
3860 }
3861
3862
3863 /**
3864  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3865  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3866  * @persistent_group: Whether to create a persistent group
3867  * @freq: Frequency for the group or 0 to indicate no hardcoding
3868  * Returns: 0 on success, -1 on failure
3869  *
3870  * This function creates a new P2P group with the local end as the Group Owner,
3871  * i.e., without using Group Owner Negotiation.
3872  */
3873 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3874                        int freq, int ht40)
3875 {
3876         struct p2p_go_neg_results params;
3877         unsigned int r;
3878
3879         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3880                 return -1;
3881
3882         /* Make sure we are not running find during connection establishment */
3883         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3884         wpas_p2p_stop_find(wpa_s);
3885
3886         if (freq == 2) {
3887                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3888                            "band");
3889                 if (wpa_s->best_24_freq > 0 &&
3890                     p2p_supported_freq(wpa_s->global->p2p,
3891                                        wpa_s->best_24_freq)) {
3892                         freq = wpa_s->best_24_freq;
3893                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3894                                    "channel: %d MHz", freq);
3895                 } else {
3896                         os_get_random((u8 *) &r, sizeof(r));
3897                         freq = 2412 + (r % 3) * 25;
3898                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3899                                    "channel: %d MHz", freq);
3900                 }
3901         }
3902
3903         if (freq == 5) {
3904                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3905                            "band");
3906                 if (wpa_s->best_5_freq > 0 &&
3907                     p2p_supported_freq(wpa_s->global->p2p,
3908                                        wpa_s->best_5_freq)) {
3909                         freq = wpa_s->best_5_freq;
3910                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3911                                    "channel: %d MHz", freq);
3912                 } else {
3913                         os_get_random((u8 *) &r, sizeof(r));
3914                         freq = 5180 + (r % 4) * 20;
3915                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3916                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3917                                            "5 GHz channel for P2P group");
3918                                 return -1;
3919                         }
3920                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3921                                    "channel: %d MHz", freq);
3922                 }
3923         }
3924
3925         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3926                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3927                            "(%u MHz) is not supported for P2P uses",
3928                            freq);
3929                 return -1;
3930         }
3931
3932         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3933                 return -1;
3934         if (params.freq &&
3935             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3936                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3937                            "(%u MHz) is not supported for P2P uses",
3938                            params.freq);
3939                 return -1;
3940         }
3941         p2p_go_params(wpa_s->global->p2p, &params);
3942         params.persistent_group = persistent_group;
3943
3944         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3945         if (wpa_s == NULL)
3946                 return -1;
3947         wpas_start_wps_go(wpa_s, &params, 0);
3948
3949         return 0;
3950 }
3951
3952
3953 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3954                                  struct wpa_ssid *params, int addr_allocated)
3955 {
3956         struct wpa_ssid *ssid;
3957
3958         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3959         if (wpa_s == NULL)
3960                 return -1;
3961
3962         wpa_supplicant_ap_deinit(wpa_s);
3963
3964         ssid = wpa_config_add_network(wpa_s->conf);
3965         if (ssid == NULL)
3966                 return -1;
3967         wpa_config_set_network_defaults(ssid);
3968         ssid->temporary = 1;
3969         ssid->proto = WPA_PROTO_RSN;
3970         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3971         ssid->group_cipher = WPA_CIPHER_CCMP;
3972         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3973         ssid->ssid = os_malloc(params->ssid_len);
3974         if (ssid->ssid == NULL) {
3975                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3976                 return -1;
3977         }
3978         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3979         ssid->ssid_len = params->ssid_len;
3980         ssid->p2p_group = 1;
3981         ssid->export_keys = 1;
3982         if (params->psk_set) {
3983                 os_memcpy(ssid->psk, params->psk, 32);
3984                 ssid->psk_set = 1;
3985         }
3986         if (params->passphrase)
3987                 ssid->passphrase = os_strdup(params->passphrase);
3988
3989         wpa_supplicant_select_network(wpa_s, ssid);
3990
3991         wpa_s->show_group_started = 1;
3992
3993         return 0;
3994 }
3995
3996
3997 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3998                                   struct wpa_ssid *ssid, int addr_allocated,
3999                                   int freq, int ht40)
4000 {
4001         struct p2p_go_neg_results params;
4002         int go = 0;
4003
4004         if (ssid->disabled != 2 || ssid->ssid == NULL)
4005                 return -1;
4006
4007         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4008             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4009                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4010                            "already running");
4011                 return 0;
4012         }
4013
4014         /* Make sure we are not running find during connection establishment */
4015         wpas_p2p_stop_find(wpa_s);
4016
4017         wpa_s->p2p_fallback_to_go_neg = 0;
4018
4019         if (ssid->mode == WPAS_MODE_INFRA)
4020                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4021
4022         if (ssid->mode != WPAS_MODE_P2P_GO)
4023                 return -1;
4024
4025         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4026                 return -1;
4027
4028         params.role_go = 1;
4029         if (ssid->passphrase == NULL ||
4030             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4031                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4032                            "group");
4033                 return -1;
4034         }
4035         os_strlcpy(params.passphrase, ssid->passphrase,
4036                    sizeof(params.passphrase));
4037         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4038         params.ssid_len = ssid->ssid_len;
4039         params.persistent_group = 1;
4040
4041         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4042         if (wpa_s == NULL)
4043                 return -1;
4044
4045         wpas_start_wps_go(wpa_s, &params, 0);
4046
4047         return 0;
4048 }
4049
4050
4051 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4052                                struct wpabuf *proberesp_ies)
4053 {
4054         struct wpa_supplicant *wpa_s = ctx;
4055         if (wpa_s->ap_iface) {
4056                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4057                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4058                         wpabuf_free(beacon_ies);
4059                         wpabuf_free(proberesp_ies);
4060                         return;
4061                 }
4062                 if (beacon_ies) {
4063                         wpabuf_free(hapd->p2p_beacon_ie);
4064                         hapd->p2p_beacon_ie = beacon_ies;
4065                 }
4066                 wpabuf_free(hapd->p2p_probe_resp_ie);
4067                 hapd->p2p_probe_resp_ie = proberesp_ies;
4068         } else {
4069                 wpabuf_free(beacon_ies);
4070                 wpabuf_free(proberesp_ies);
4071         }
4072         wpa_supplicant_ap_update_beacon(wpa_s);
4073 }
4074
4075
4076 static void wpas_p2p_idle_update(void *ctx, int idle)
4077 {
4078         struct wpa_supplicant *wpa_s = ctx;
4079         if (!wpa_s->ap_iface)
4080                 return;
4081         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4082         if (idle)
4083                 wpas_p2p_set_group_idle_timeout(wpa_s);
4084         else
4085                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4086 }
4087
4088
4089 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4090                                        struct wpa_ssid *ssid)
4091 {
4092         struct p2p_group *group;
4093         struct p2p_group_config *cfg;
4094
4095         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4096                 return NULL;
4097         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4098                 return NULL;
4099
4100         cfg = os_zalloc(sizeof(*cfg));
4101         if (cfg == NULL)
4102                 return NULL;
4103
4104         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4105                 cfg->persistent_group = 2;
4106         else if (ssid->p2p_persistent_group)
4107                 cfg->persistent_group = 1;
4108         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4109         if (wpa_s->max_stations &&
4110             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4111                 cfg->max_clients = wpa_s->max_stations;
4112         else
4113                 cfg->max_clients = wpa_s->conf->max_num_sta;
4114         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4115         cfg->ssid_len = ssid->ssid_len;
4116         cfg->cb_ctx = wpa_s;
4117         cfg->ie_update = wpas_p2p_ie_update;
4118         cfg->idle_update = wpas_p2p_idle_update;
4119
4120         group = p2p_group_init(wpa_s->global->p2p, cfg);
4121         if (group == NULL)
4122                 os_free(cfg);
4123         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4124                 p2p_group_notif_formation_done(group);
4125         wpa_s->p2p_group = group;
4126         return group;
4127 }
4128
4129
4130 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4131                           int registrar)
4132 {
4133         struct wpa_ssid *ssid = wpa_s->current_ssid;
4134
4135         if (!wpa_s->p2p_in_provisioning) {
4136                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4137                            "provisioning not in progress");
4138                 return;
4139         }
4140
4141         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4142                 u8 go_dev_addr[ETH_ALEN];
4143                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4144                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4145                                           ssid->ssid_len);
4146                 /* Clear any stored provisioning info */
4147                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4148         }
4149
4150         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4151                              NULL);
4152         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4153                 /*
4154                  * Use a separate timeout for initial data connection to
4155                  * complete to allow the group to be removed automatically if
4156                  * something goes wrong in this step before the P2P group idle
4157                  * timeout mechanism is taken into use.
4158                  */
4159                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4160                                        wpas_p2p_group_formation_timeout,
4161                                        wpa_s->parent, NULL);
4162         }
4163         if (wpa_s->global->p2p)
4164                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4165         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4166                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4167         wpas_group_formation_completed(wpa_s, 1);
4168 }
4169
4170
4171 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4172                          struct wps_event_fail *fail)
4173 {
4174         if (!wpa_s->p2p_in_provisioning) {
4175                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4176                            "provisioning not in progress");
4177                 return;
4178         }
4179
4180         if (wpa_s->go_params) {
4181                 p2p_clear_provisioning_info(
4182                         wpa_s->global->p2p,
4183                         wpa_s->go_params->peer_device_addr);
4184         }
4185
4186         wpas_notify_p2p_wps_failed(wpa_s, fail);
4187 }
4188
4189
4190 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4191                        const char *config_method,
4192                        enum wpas_p2p_prov_disc_use use)
4193 {
4194         u16 config_methods;
4195
4196         wpa_s->p2p_fallback_to_go_neg = 0;
4197         wpa_s->pending_pd_use = NORMAL_PD;
4198         if (os_strncmp(config_method, "display", 7) == 0)
4199                 config_methods = WPS_CONFIG_DISPLAY;
4200         else if (os_strncmp(config_method, "keypad", 6) == 0)
4201                 config_methods = WPS_CONFIG_KEYPAD;
4202         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4203                  os_strncmp(config_method, "pushbutton", 10) == 0)
4204                 config_methods = WPS_CONFIG_PUSHBUTTON;
4205         else {
4206                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4207                 return -1;
4208         }
4209
4210         if (use == WPAS_P2P_PD_AUTO) {
4211                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4212                 wpa_s->pending_pd_config_methods = config_methods;
4213                 wpa_s->p2p_auto_pd = 1;
4214                 wpa_s->p2p_auto_join = 0;
4215                 wpa_s->pending_pd_before_join = 0;
4216                 wpa_s->auto_pd_scan_retry = 0;
4217                 wpas_p2p_stop_find(wpa_s);
4218                 wpa_s->p2p_join_scan_count = 0;
4219                 os_get_time(&wpa_s->p2p_auto_started);
4220                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4221                            wpa_s->p2p_auto_started.sec,
4222                            wpa_s->p2p_auto_started.usec);
4223                 wpas_p2p_join_scan(wpa_s, NULL);
4224                 return 0;
4225         }
4226
4227         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4228                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4229                                                  config_methods,
4230                                                  use == WPAS_P2P_PD_FOR_JOIN);
4231         }
4232
4233         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4234                 return -1;
4235
4236         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4237                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4238                                  0);
4239 }
4240
4241
4242 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4243                               char *end)
4244 {
4245         return p2p_scan_result_text(ies, ies_len, buf, end);
4246 }
4247
4248
4249 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4250 {
4251         if (!wpa_s->pending_action_tx)
4252                 return;
4253
4254         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4255                    "operation request");
4256         wpabuf_free(wpa_s->pending_action_tx);
4257         wpa_s->pending_action_tx = NULL;
4258 }
4259
4260
4261 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4262                   enum p2p_discovery_type type,
4263                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4264                   const u8 *dev_id, unsigned int search_delay)
4265 {
4266         wpas_p2p_clear_pending_action_tx(wpa_s);
4267         wpa_s->p2p_long_listen = 0;
4268
4269         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4270                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4271
4272         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4273             wpa_s->p2p_in_provisioning)
4274                 return -1;
4275
4276         wpa_supplicant_cancel_sched_scan(wpa_s);
4277
4278         return p2p_find(wpa_s->global->p2p, timeout, type,
4279                         num_req_dev_types, req_dev_types, dev_id,
4280                         search_delay);
4281 }
4282
4283
4284 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4285 {
4286         wpas_p2p_clear_pending_action_tx(wpa_s);
4287         wpa_s->p2p_long_listen = 0;
4288         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4289         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4290         wpa_s->p2p_cb_on_scan_complete = 0;
4291
4292         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4293                 wpa_drv_p2p_stop_find(wpa_s);
4294                 return;
4295         }
4296
4297         if (wpa_s->global->p2p)
4298                 p2p_stop_find(wpa_s->global->p2p);
4299
4300         wpas_p2p_remove_pending_group_interface(wpa_s);
4301 }
4302
4303
4304 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4305 {
4306         struct wpa_supplicant *wpa_s = eloop_ctx;
4307         wpa_s->p2p_long_listen = 0;
4308 }
4309
4310
4311 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4312 {
4313         int res;
4314
4315         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4316                 return -1;
4317
4318         wpa_supplicant_cancel_sched_scan(wpa_s);
4319         wpas_p2p_clear_pending_action_tx(wpa_s);
4320
4321         if (timeout == 0) {
4322                 /*
4323                  * This is a request for unlimited Listen state. However, at
4324                  * least for now, this is mapped to a Listen state for one
4325                  * hour.
4326                  */
4327                 timeout = 3600;
4328         }
4329         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4330         wpa_s->p2p_long_listen = 0;
4331
4332         /*
4333          * Stop previous find/listen operation to avoid trying to request a new
4334          * remain-on-channel operation while the driver is still running the
4335          * previous one.
4336          */
4337         if (wpa_s->global->p2p)
4338                 p2p_stop_find(wpa_s->global->p2p);
4339
4340         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4341         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4342                 wpa_s->p2p_long_listen = timeout * 1000;
4343                 eloop_register_timeout(timeout, 0,
4344                                        wpas_p2p_long_listen_timeout,
4345                                        wpa_s, NULL);
4346         }
4347
4348         return res;
4349 }
4350
4351
4352 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4353                           u8 *buf, size_t len, int p2p_group)
4354 {
4355         struct wpabuf *p2p_ie;
4356         int ret;
4357
4358         if (wpa_s->global->p2p_disabled)
4359                 return -1;
4360         if (wpa_s->global->p2p == NULL)
4361                 return -1;
4362         if (bss == NULL)
4363                 return -1;
4364
4365         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4366         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4367                                p2p_group, p2p_ie);
4368         wpabuf_free(p2p_ie);
4369
4370         return ret;
4371 }
4372
4373
4374 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4375                           const u8 *dst, const u8 *bssid,
4376                           const u8 *ie, size_t ie_len, int ssi_signal)
4377 {
4378         if (wpa_s->global->p2p_disabled)
4379                 return 0;
4380         if (wpa_s->global->p2p == NULL)
4381                 return 0;
4382
4383         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4384                                  ie, ie_len)) {
4385         case P2P_PREQ_NOT_P2P:
4386                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4387                                  ssi_signal);
4388                 /* fall through */
4389         case P2P_PREQ_MALFORMED:
4390         case P2P_PREQ_NOT_LISTEN:
4391         case P2P_PREQ_NOT_PROCESSED:
4392         default: /* make gcc happy */
4393                 return 0;
4394         case P2P_PREQ_PROCESSED:
4395                 return 1;
4396         }
4397 }
4398
4399
4400 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4401                         const u8 *sa, const u8 *bssid,
4402                         u8 category, const u8 *data, size_t len, int freq)
4403 {
4404         if (wpa_s->global->p2p_disabled)
4405                 return;
4406         if (wpa_s->global->p2p == NULL)
4407                 return;
4408
4409         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4410                       freq);
4411 }
4412
4413
4414 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4415 {
4416         if (wpa_s->global->p2p_disabled)
4417                 return;
4418         if (wpa_s->global->p2p == NULL)
4419                 return;
4420
4421         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4422 }
4423
4424
4425 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4426 {
4427         p2p_group_deinit(wpa_s->p2p_group);
4428         wpa_s->p2p_group = NULL;
4429
4430         wpa_s->ap_configured_cb = NULL;
4431         wpa_s->ap_configured_cb_ctx = NULL;
4432         wpa_s->ap_configured_cb_data = NULL;
4433         wpa_s->connect_without_scan = NULL;
4434 }
4435
4436
4437 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4438 {
4439         wpa_s->p2p_long_listen = 0;
4440
4441         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4442                 return wpa_drv_p2p_reject(wpa_s, addr);
4443
4444         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4445                 return -1;
4446
4447         return p2p_reject(wpa_s->global->p2p, addr);
4448 }
4449
4450
4451 /* Invite to reinvoke a persistent group */
4452 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4453                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4454                     int ht40)
4455 {
4456         enum p2p_invite_role role;
4457         u8 *bssid = NULL;
4458
4459         wpa_s->p2p_persistent_go_freq = freq;
4460         wpa_s->p2p_go_ht40 = !!ht40;
4461         if (ssid->mode == WPAS_MODE_P2P_GO) {
4462                 role = P2P_INVITE_ROLE_GO;
4463                 if (peer_addr == NULL) {
4464                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4465                                    "address in invitation command");
4466                         return -1;
4467                 }
4468                 if (wpas_p2p_create_iface(wpa_s)) {
4469                         if (wpas_p2p_add_group_interface(wpa_s,
4470                                                          WPA_IF_P2P_GO) < 0) {
4471                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4472                                            "allocate a new interface for the "
4473                                            "group");
4474                                 return -1;
4475                         }
4476                         bssid = wpa_s->pending_interface_addr;
4477                 } else
4478                         bssid = wpa_s->own_addr;
4479         } else {
4480                 role = P2P_INVITE_ROLE_CLIENT;
4481                 peer_addr = ssid->bssid;
4482         }
4483         wpa_s->pending_invite_ssid_id = ssid->id;
4484
4485         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4486                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4487                                           ssid->ssid, ssid->ssid_len,
4488                                           go_dev_addr, 1);
4489
4490         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4491                 return -1;
4492
4493         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4494                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4495 }
4496
4497
4498 /* Invite to join an active group */
4499 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4500                           const u8 *peer_addr, const u8 *go_dev_addr)
4501 {
4502         struct wpa_global *global = wpa_s->global;
4503         enum p2p_invite_role role;
4504         u8 *bssid = NULL;
4505         struct wpa_ssid *ssid;
4506         int persistent;
4507
4508         wpa_s->p2p_persistent_go_freq = 0;
4509         wpa_s->p2p_go_ht40 = 0;
4510
4511         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4512                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4513                         break;
4514         }
4515         if (wpa_s == NULL) {
4516                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4517                 return -1;
4518         }
4519
4520         ssid = wpa_s->current_ssid;
4521         if (ssid == NULL) {
4522                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4523                            "invitation");
4524                 return -1;
4525         }
4526
4527         persistent = ssid->p2p_persistent_group &&
4528                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4529                                         ssid->ssid, ssid->ssid_len);
4530
4531         if (ssid->mode == WPAS_MODE_P2P_GO) {
4532                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4533                 bssid = wpa_s->own_addr;
4534                 if (go_dev_addr == NULL)
4535                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4536         } else {
4537                 role = P2P_INVITE_ROLE_CLIENT;
4538                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4539                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4540                                    "invite to current group");
4541                         return -1;
4542                 }
4543                 bssid = wpa_s->bssid;
4544                 if (go_dev_addr == NULL &&
4545                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4546                         go_dev_addr = wpa_s->go_dev_addr;
4547         }
4548         wpa_s->parent->pending_invite_ssid_id = -1;
4549
4550         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4551                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4552                                           ssid->ssid, ssid->ssid_len,
4553                                           go_dev_addr, persistent);
4554
4555         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4556                 return -1;
4557
4558         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4559                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4560                           go_dev_addr, persistent);
4561 }
4562
4563
4564 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4565 {
4566         struct wpa_ssid *ssid = wpa_s->current_ssid;
4567         const char *ssid_txt;
4568         u8 go_dev_addr[ETH_ALEN];
4569         int network_id = -1;
4570         int persistent;
4571         int freq;
4572
4573         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4574                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4575                                      wpa_s->parent, NULL);
4576         }
4577
4578         if (!wpa_s->show_group_started || !ssid)
4579                 goto done;
4580
4581         wpa_s->show_group_started = 0;
4582
4583         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4584         os_memset(go_dev_addr, 0, ETH_ALEN);
4585         if (ssid->bssid_set)
4586                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4587         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4588                                                ssid->ssid_len);
4589         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4590
4591         if (wpa_s->global->p2p_group_formation == wpa_s)
4592                 wpa_s->global->p2p_group_formation = NULL;
4593
4594         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4595                 (int) wpa_s->assoc_freq;
4596         if (ssid->passphrase == NULL && ssid->psk_set) {
4597                 char psk[65];
4598                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4599                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4600                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4601                         MACSTR "%s",
4602                         wpa_s->ifname, ssid_txt, freq, psk,
4603                         MAC2STR(go_dev_addr),
4604                         persistent ? " [PERSISTENT]" : "");
4605         } else {
4606                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4607                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4608                         "go_dev_addr=" MACSTR "%s",
4609                         wpa_s->ifname, ssid_txt, freq,
4610                         ssid->passphrase ? ssid->passphrase : "",
4611                         MAC2STR(go_dev_addr),
4612                         persistent ? " [PERSISTENT]" : "");
4613         }
4614
4615         if (persistent)
4616                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4617                                                              ssid, go_dev_addr);
4618         if (network_id < 0)
4619                 network_id = ssid->id;
4620         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4621
4622 done:
4623         if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4624             wpa_s->global->p2p != NULL) {
4625                 wpa_s->p2p_cb_on_scan_complete = 0;
4626                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4627                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4628                                 "continued after successful connection");
4629                         p2p_increase_search_delay(
4630                                 wpa_s->global->p2p,
4631                                 wpas_p2p_search_delay(wpa_s));
4632                 }
4633         }
4634 }
4635
4636
4637 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4638                           u32 interval1, u32 duration2, u32 interval2)
4639 {
4640         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4641                 return -1;
4642         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4643                 return -1;
4644
4645         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4646             wpa_s->current_ssid == NULL ||
4647             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4648                 return -1;
4649
4650         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4651                                 wpa_s->own_addr, wpa_s->assoc_freq,
4652                                 duration1, interval1, duration2, interval2);
4653 }
4654
4655
4656 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4657                         unsigned int interval)
4658 {
4659         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4660                 return -1;
4661
4662         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4663                 return -1;
4664
4665         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4666 }
4667
4668
4669 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4670 {
4671         return wpa_s->current_ssid != NULL &&
4672                 wpa_s->current_ssid->p2p_group &&
4673                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4674 }
4675
4676
4677 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4678 {
4679         struct wpa_supplicant *wpa_s = eloop_ctx;
4680
4681         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4682                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4683                            "disabled");
4684                 return;
4685         }
4686
4687         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4688                    "group");
4689         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4690 }
4691
4692
4693 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4694 {
4695         int timeout;
4696
4697         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4698                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4699
4700         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4701                 return;
4702
4703         timeout = wpa_s->conf->p2p_group_idle;
4704         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4705             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4706             timeout = P2P_MAX_CLIENT_IDLE;
4707
4708         if (timeout == 0)
4709                 return;
4710
4711         if (timeout < 0) {
4712                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4713                         timeout = 0; /* special client mode no-timeout */
4714                 else
4715                         return;
4716         }
4717
4718         if (wpa_s->p2p_in_provisioning) {
4719                 /*
4720                  * Use the normal group formation timeout during the
4721                  * provisioning phase to avoid terminating this process too
4722                  * early due to group idle timeout.
4723                  */
4724                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4725                            "during provisioning");
4726                 return;
4727         }
4728 #ifndef ANDROID_P2P
4729         if (wpa_s->show_group_started) {
4730                 /*
4731                  * Use the normal group formation timeout between the end of
4732                  * the provisioning phase and completion of 4-way handshake to
4733                  * avoid terminating this process too early due to group idle
4734                  * timeout.
4735                  */
4736                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4737                            "while waiting for initial 4-way handshake to "
4738                            "complete");
4739                 return;
4740         }
4741 #endif
4742
4743         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4744                    timeout);
4745         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4746                                wpa_s, NULL);
4747 }
4748
4749
4750 /* Returns 1 if the interface was removed */
4751 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4752                           u16 reason_code, const u8 *ie, size_t ie_len,
4753                           int locally_generated)
4754 {
4755         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4756                 return 0;
4757         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4758                 return 0;
4759
4760         if (!locally_generated)
4761                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4762                                  ie_len);
4763
4764         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4765             wpa_s->current_ssid &&
4766             wpa_s->current_ssid->p2p_group &&
4767             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4768                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4769                            "session is ending");
4770                 if (wpas_p2p_group_delete(wpa_s,
4771                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4772                     > 0)
4773                         return 1;
4774         }
4775
4776         return 0;
4777 }
4778
4779
4780 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4781                              u16 reason_code, const u8 *ie, size_t ie_len,
4782                              int locally_generated)
4783 {
4784         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4785                 return;
4786         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4787                 return;
4788
4789         if (!locally_generated)
4790                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4791                                    ie_len);
4792 }
4793
4794
4795 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4796 {
4797         struct p2p_data *p2p = wpa_s->global->p2p;
4798
4799         if (p2p == NULL)
4800                 return;
4801
4802         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4803                 return;
4804
4805         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4806                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4807
4808         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4809                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4810
4811         if (wpa_s->wps &&
4812             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4813                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4814
4815         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4816                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4817
4818         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4819                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4820                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4821                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4822                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4823         }
4824
4825         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4826                 p2p_set_sec_dev_types(p2p,
4827                                       (void *) wpa_s->conf->sec_device_type,
4828                                       wpa_s->conf->num_sec_device_types);
4829
4830         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4831                 int i;
4832                 p2p_remove_wps_vendor_extensions(p2p);
4833                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4834                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4835                                 continue;
4836                         p2p_add_wps_vendor_extension(
4837                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4838                 }
4839         }
4840
4841         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4842             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4843                 char country[3];
4844                 country[0] = wpa_s->conf->country[0];
4845                 country[1] = wpa_s->conf->country[1];
4846                 country[2] = 0x04;
4847                 p2p_set_country(p2p, country);
4848         }
4849
4850         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4851                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4852                                      wpa_s->conf->p2p_ssid_postfix ?
4853                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4854                                      0);
4855         }
4856
4857         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4858                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4859
4860         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4861                 u8 reg_class, channel;
4862                 int ret;
4863                 unsigned int r;
4864                 if (wpa_s->conf->p2p_listen_reg_class &&
4865                     wpa_s->conf->p2p_listen_channel) {
4866                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4867                         channel = wpa_s->conf->p2p_listen_channel;
4868                 } else {
4869                         reg_class = 81;
4870                         /*
4871                          * Pick one of the social channels randomly as the
4872                          * listen channel.
4873                          */
4874                         os_get_random((u8 *) &r, sizeof(r));
4875                         channel = 1 + (r % 3) * 5;
4876                 }
4877                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4878                 if (ret)
4879                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4880                                    "failed: %d", ret);
4881         }
4882         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4883                 u8 op_reg_class, op_channel, cfg_op_channel;
4884                 int ret = 0;
4885                 unsigned int r;
4886                 if (wpa_s->conf->p2p_oper_reg_class &&
4887                     wpa_s->conf->p2p_oper_channel) {
4888                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4889                         op_channel = wpa_s->conf->p2p_oper_channel;
4890                         cfg_op_channel = 1;
4891                 } else {
4892                         op_reg_class = 81;
4893                         /*
4894                          * Use random operation channel from (1, 6, 11)
4895                          *if no other preference is indicated.
4896                          */
4897                         os_get_random((u8 *) &r, sizeof(r));
4898                         op_channel = 1 + (r % 3) * 5;
4899                         cfg_op_channel = 0;
4900                 }
4901                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4902                                            cfg_op_channel);
4903                 if (ret)
4904                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4905                                    "failed: %d", ret);
4906         }
4907
4908         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4909                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4910                                       wpa_s->conf->p2p_pref_chan) < 0) {
4911                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4912                                    "update failed");
4913                 }
4914         }
4915 }
4916
4917
4918 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4919                      int duration)
4920 {
4921         if (!wpa_s->ap_iface)
4922                 return -1;
4923         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4924                                    duration);
4925 }
4926
4927
4928 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4929 {
4930         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4931                 return -1;
4932         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4933                 return -1;
4934
4935         wpa_s->global->cross_connection = enabled;
4936         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4937
4938         if (!enabled) {
4939                 struct wpa_supplicant *iface;
4940
4941                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4942                 {
4943                         if (iface->cross_connect_enabled == 0)
4944                                 continue;
4945
4946                         iface->cross_connect_enabled = 0;
4947                         iface->cross_connect_in_use = 0;
4948                         wpa_msg(iface->parent, MSG_INFO,
4949                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4950                                 iface->ifname, iface->cross_connect_uplink);
4951                 }
4952         }
4953
4954         return 0;
4955 }
4956
4957
4958 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4959 {
4960         struct wpa_supplicant *iface;
4961
4962         if (!uplink->global->cross_connection)
4963                 return;
4964
4965         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4966                 if (!iface->cross_connect_enabled)
4967                         continue;
4968                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4969                     0)
4970                         continue;
4971                 if (iface->ap_iface == NULL)
4972                         continue;
4973                 if (iface->cross_connect_in_use)
4974                         continue;
4975
4976                 iface->cross_connect_in_use = 1;
4977                 wpa_msg(iface->parent, MSG_INFO,
4978                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4979                         iface->ifname, iface->cross_connect_uplink);
4980         }
4981 }
4982
4983
4984 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4985 {
4986         struct wpa_supplicant *iface;
4987
4988         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4989                 if (!iface->cross_connect_enabled)
4990                         continue;
4991                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4992                     0)
4993                         continue;
4994                 if (!iface->cross_connect_in_use)
4995                         continue;
4996
4997                 wpa_msg(iface->parent, MSG_INFO,
4998                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4999                         iface->ifname, iface->cross_connect_uplink);
5000                 iface->cross_connect_in_use = 0;
5001         }
5002 }
5003
5004
5005 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5006 {
5007         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5008             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5009             wpa_s->cross_connect_disallowed)
5010                 wpas_p2p_disable_cross_connect(wpa_s);
5011         else
5012                 wpas_p2p_enable_cross_connect(wpa_s);
5013         if (!wpa_s->ap_iface &&
5014             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5015                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5016 }
5017
5018
5019 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5020 {
5021         wpas_p2p_disable_cross_connect(wpa_s);
5022         if (!wpa_s->ap_iface &&
5023             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5024                                          wpa_s, NULL))
5025                 wpas_p2p_set_group_idle_timeout(wpa_s);
5026 }
5027
5028
5029 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5030 {
5031         struct wpa_supplicant *iface;
5032
5033         if (!wpa_s->global->cross_connection)
5034                 return;
5035
5036         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5037                 if (iface == wpa_s)
5038                         continue;
5039                 if (iface->drv_flags &
5040                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5041                         continue;
5042                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5043                         continue;
5044
5045                 wpa_s->cross_connect_enabled = 1;
5046                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5047                            sizeof(wpa_s->cross_connect_uplink));
5048                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5049                            "%s to %s whenever uplink is available",
5050                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5051
5052                 if (iface->ap_iface || iface->current_ssid == NULL ||
5053                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5054                     iface->cross_connect_disallowed ||
5055                     iface->wpa_state != WPA_COMPLETED)
5056                         break;
5057
5058                 wpa_s->cross_connect_in_use = 1;
5059                 wpa_msg(wpa_s->parent, MSG_INFO,
5060                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5061                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5062                 break;
5063         }
5064 }
5065
5066
5067 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5068 {
5069         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5070             !wpa_s->p2p_in_provisioning)
5071                 return 0; /* not P2P client operation */
5072
5073         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5074                    "session overlap");
5075         if (wpa_s != wpa_s->parent)
5076                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5077
5078         if (wpa_s->global->p2p)
5079                 p2p_group_formation_failed(wpa_s->global->p2p);
5080
5081         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5082                              wpa_s->parent, NULL);
5083
5084         wpas_group_formation_completed(wpa_s, 0);
5085         return 1;
5086 }
5087
5088
5089 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5090 {
5091         struct p2p_channels chan;
5092
5093         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5094                 return;
5095
5096         os_memset(&chan, 0, sizeof(chan));
5097         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5098                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5099                            "channel list");
5100                 return;
5101         }
5102
5103         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5104 }
5105
5106
5107 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5108 {
5109         struct wpa_global *global = wpa_s->global;
5110         int found = 0;
5111         const u8 *peer;
5112
5113         if (global->p2p == NULL)
5114                 return -1;
5115
5116         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5117
5118         if (wpa_s->pending_interface_name[0] &&
5119             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5120                 found = 1;
5121
5122         peer = p2p_get_go_neg_peer(global->p2p);
5123         if (peer) {
5124                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5125                            MACSTR, MAC2STR(peer));
5126                 p2p_unauthorize(global->p2p, peer);
5127                 found = 1;
5128         }
5129
5130         wpas_p2p_stop_find(wpa_s);
5131
5132         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5133                 if (wpa_s == global->p2p_group_formation &&
5134                     (wpa_s->p2p_in_provisioning ||
5135                      wpa_s->parent->pending_interface_type ==
5136                      WPA_IF_P2P_CLIENT)) {
5137                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5138                                    "formation found - cancelling",
5139                                    wpa_s->ifname);
5140                         found = 1;
5141                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5142                                              wpa_s->parent, NULL);
5143                         wpas_p2p_group_delete(wpa_s,
5144                                               P2P_GROUP_REMOVAL_REQUESTED);
5145                         break;
5146                 }
5147         }
5148
5149         if (!found) {
5150                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5151                 return -1;
5152         }
5153
5154         return 0;
5155 }
5156
5157
5158 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5159 {
5160         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5161                 return;
5162
5163         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5164                    "being available anymore");
5165         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5166 }
5167
5168
5169 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5170                                    int freq_24, int freq_5, int freq_overall)
5171 {
5172         struct p2p_data *p2p = wpa_s->global->p2p;
5173         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5174                 return;
5175         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5176 }
5177
5178
5179 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5180 {
5181         u8 peer[ETH_ALEN];
5182         struct p2p_data *p2p = wpa_s->global->p2p;
5183
5184         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5185                 return -1;
5186
5187         if (hwaddr_aton(addr, peer))
5188                 return -1;
5189
5190         return p2p_unauthorize(p2p, peer);
5191 }
5192
5193
5194 /**
5195  * wpas_p2p_disconnect - Disconnect from a P2P Group
5196  * @wpa_s: Pointer to wpa_supplicant data
5197  * Returns: 0 on success, -1 on failure
5198  *
5199  * This can be used to disconnect from a group in which the local end is a P2P
5200  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5201  * virtual network interface was created for this group, that interface will be
5202  * removed. Otherwise, only the configured P2P group network will be removed
5203  * from the interface.
5204  */
5205 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5206 {
5207
5208         if (wpa_s == NULL)
5209                 return -1;
5210
5211         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5212                 -1 : 0;
5213 }
5214
5215
5216 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5217 {
5218         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5219                 return 0;
5220
5221         return p2p_in_progress(wpa_s->global->p2p);
5222 }
5223
5224
5225 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5226                               struct wpa_ssid *ssid)
5227 {
5228         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5229             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5230                                  wpa_s->parent, NULL) > 0) {
5231                 /**
5232                  * Remove the network by scheduling the group formation
5233                  * timeout to happen immediately. The teardown code
5234                  * needs to be scheduled to run asynch later so that we
5235                  * don't delete data from under ourselves unexpectedly.
5236                  * Calling wpas_p2p_group_formation_timeout directly
5237                  * causes a series of crashes in WPS failure scenarios.
5238                  */
5239                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5240                            "P2P group network getting removed");
5241                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5242                                        wpa_s->parent, NULL);
5243         }
5244 }
5245
5246
5247 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5248                                           const u8 *addr, const u8 *ssid,
5249                                           size_t ssid_len)
5250 {
5251         struct wpa_ssid *s;
5252         size_t i;
5253
5254         for (s = wpa_s->conf->ssid; s; s = s->next) {
5255                 if (s->disabled != 2)
5256                         continue;
5257                 if (ssid &&
5258                     (ssid_len != s->ssid_len ||
5259                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5260                         continue;
5261                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5262                         return s; /* peer is GO in the persistent group */
5263                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5264                         continue;
5265                 for (i = 0; i < s->num_p2p_clients; i++) {
5266                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5267                                       addr, ETH_ALEN) == 0)
5268                                 return s; /* peer is P2P client in persistent
5269                                            * group */
5270                 }
5271         }
5272
5273         return NULL;
5274 }
5275
5276
5277 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5278                                        const u8 *addr)
5279 {
5280         if (addr == NULL)
5281                 return;
5282         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5283 }
5284
5285
5286 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5287                                         int group_added)
5288 {
5289         struct wpa_supplicant *group = wpa_s;
5290         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5291         if (wpa_s->global->p2p_group_formation)
5292                 group = wpa_s->global->p2p_group_formation;
5293         wpa_s = wpa_s->parent;
5294         offchannel_send_action_done(wpa_s);
5295         if (group_added)
5296                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5297         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5298         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5299                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5300                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5301                          wpa_s->p2p_persistent_id,
5302                          wpa_s->p2p_pd_before_go_neg,
5303                          wpa_s->p2p_go_ht40);
5304 }
5305
5306
5307 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5308 {
5309         if (!wpa_s->p2p_fallback_to_go_neg ||
5310             wpa_s->p2p_in_provisioning <= 5)
5311                 return 0;
5312
5313         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5314                 return 0; /* peer operating as a GO */
5315
5316         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5317                 "fallback to GO Negotiation");
5318         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5319
5320         return 1;
5321 }
5322
5323
5324 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5325 {
5326         const char *rn, *rn2;
5327         struct wpa_supplicant *ifs;
5328
5329         if (wpa_s->wpa_state > WPA_SCANNING) {
5330                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5331                         "concurrent operation",
5332                         P2P_CONCURRENT_SEARCH_DELAY);
5333                 return P2P_CONCURRENT_SEARCH_DELAY;
5334         }
5335
5336         if (!wpa_s->driver->get_radio_name)
5337                 return 0;
5338         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5339         if (rn == NULL || rn[0] == '\0')
5340                 return 0;
5341
5342         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5343                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5344                         continue;
5345
5346                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5347                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5348                         continue;
5349                 if (ifs->wpa_state > WPA_SCANNING) {
5350                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5351                                 "delay due to concurrent operation on "
5352                                 "interface %s",
5353                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5354                         return P2P_CONCURRENT_SEARCH_DELAY;
5355                 }
5356         }
5357
5358         return 0;
5359 }
5360
5361 #ifdef ANDROID_P2P
5362 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5363 {
5364         struct wpa_supplicant *iface = NULL;
5365         struct p2p_data *p2p = wpa_s->global->p2p;
5366
5367         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5368                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5369                         (iface->current_ssid->frequency != freq)) {
5370
5371                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5372                                         /* Try to see whether we can move the GO. If it
5373                                          * is not possible, remove the GO interface
5374                                          */
5375                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5376                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5377                                                         iface->current_ssid->frequency = freq;
5378                                                         continue;
5379                                         }
5380                         }
5381
5382                         /* If GO cannot be moved or if the conflicting interface is a
5383                          * P2P Client, remove the interface depending up on the connection
5384                          * priority */
5385                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5386                                 /* STA connection has priority over existing
5387                                  * P2P connection. So remove the interface */
5388                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5389                                                 "concurrent mode frequency conflict");
5390                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5391                         } else {
5392                                 /* Existing connection has the priority. Disable the newly
5393                  * selected network and let the application know about it.
5394                                  */
5395                                 return -1;
5396                         }
5397                 }
5398         }
5399         return 0;
5400 }
5401 #endif