wpa_supplicant/p2p_supplicant.c

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