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 #ifdef ANDROID_P2P
  66 #define P2P_CONCURRENT_SEARCH_DELAY 0
  67 #else
  68 #define P2P_CONCURRENT_SEARCH_DELAY 500
  69 #endif
  70 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  71
  72 enum p2p_group_removal_reason {
  73         P2P_GROUP_REMOVAL_UNKNOWN,
  74         P2P_GROUP_REMOVAL_SILENT,
  75         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  76         P2P_GROUP_REMOVAL_REQUESTED,
  77         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  78         P2P_GROUP_REMOVAL_UNAVAILABLE,
  79         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  80 #ifdef ANDROID_P2P
  81         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  82 #endif
  83 };
  84
  85 #ifdef ANDROID_P2P
  86 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s);
  87 #endif
  88 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  89 static struct wpa_supplicant *
  90 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  91                          int go);
  92 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  93 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  94 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  95 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  96                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  97                          int auto_join);
  98 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  99                                             void *timeout_ctx);
 100 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 101 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 102 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 103 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 104 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 105                                         int group_added);
 106
 107 #ifdef ANDROID_P2P
 108 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s)
 109 {
 110         struct wpa_supplicant *iface = NULL;
 111
 112         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
 113                 if(iface->scanning  || iface->wpa_state == WPA_SCANNING) {
 114                         wpa_printf(MSG_DEBUG, "P2P: Scan in progress on %s,"
 115                         "defer P2P SEARCH", iface->ifname);
 116                         return 1;
 117                 }
 118         }
 119
 120         return 0;
 121 }
 122 #endif
 123
 124 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 125                                       struct wpa_scan_results *scan_res)
 126 {
 127         size_t i;
 128
 129         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 130                 return;
 131
 132         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 133                    (int) scan_res->num);
 134
 135         for (i = 0; i < scan_res->num; i++) {
 136                 struct wpa_scan_res *bss = scan_res->res[i];
 137                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 138                                          bss->freq, bss->level,
 139                                          (const u8 *) (bss + 1),
 140                                          bss->ie_len) > 0)
 141                         break;
 142         }
 143
 144         p2p_scan_res_handled(wpa_s->global->p2p);
 145 }
 146
 147
 148 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 149                          unsigned int num_req_dev_types,
 150                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 151 {
 152         struct wpa_supplicant *wpa_s = ctx;
 153         struct wpa_supplicant *ifs;
 154         struct wpa_driver_scan_params params;
 155         int ret;
 156         struct wpabuf *wps_ie, *ies;
 157         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 158         size_t ielen;
 159
 160         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 161                 return -1;
 162
 163         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 164                 if (ifs->sta_scan_pending &&
 165                     wpas_p2p_in_progress(wpa_s) == 2) {
 166                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 167                                    "pending station mode scan to be "
 168                                    "completed on interface %s", ifs->ifname);
 169                         wpa_s->p2p_cb_on_scan_complete = 1;
 170                         wpa_supplicant_req_scan(ifs, 0, 0);
 171                         return 1;
 172                 }
 173         }
 174
 175         os_memset(&params, 0, sizeof(params));
 176
 177         /* P2P Wildcard SSID */
 178         params.num_ssids = 1;
 179         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 180         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 181
 182         wpa_s->wps->dev.p2p = 1;
 183         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 184                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 185                                         num_req_dev_types, req_dev_types);
 186         if (wps_ie == NULL)
 187                 return -1;
 188
 189         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 190         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 191         if (ies == NULL) {
 192                 wpabuf_free(wps_ie);
 193                 return -1;
 194         }
 195         wpabuf_put_buf(ies, wps_ie);
 196         wpabuf_free(wps_ie);
 197
 198         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 199
 200         params.p2p_probe = 1;
 201         params.extra_ies = wpabuf_head(ies);
 202         params.extra_ies_len = wpabuf_len(ies);
 203
 204         switch (type) {
 205         case P2P_SCAN_SOCIAL:
 206                 params.freqs = social_channels;
 207                 break;
 208         case P2P_SCAN_FULL:
 209                 break;
 210         case P2P_SCAN_SPECIFIC:
 211                 social_channels[0] = freq;
 212                 social_channels[1] = 0;
 213                 params.freqs = social_channels;
 214                 break;
 215         case P2P_SCAN_SOCIAL_PLUS_ONE:
 216                 social_channels[3] = freq;
 217                 params.freqs = social_channels;
 218                 break;
 219         }
 220
 221         ret = wpa_drv_scan(wpa_s, &params);
 222
 223         wpabuf_free(ies);
 224
 225         if (ret) {
 226                 if (wpa_s->scanning ||
 227                     wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
 228                         wpa_s->p2p_cb_on_scan_complete = 1;
 229                         ret = 1;
 230                 }
 231         } else
 232                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 233
 234         return ret;
 235 }
 236
 237
 238 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 239 {
 240         switch (p2p_group_interface) {
 241         case P2P_GROUP_INTERFACE_PENDING:
 242                 return WPA_IF_P2P_GROUP;
 243         case P2P_GROUP_INTERFACE_GO:
 244                 return WPA_IF_P2P_GO;
 245         case P2P_GROUP_INTERFACE_CLIENT:
 246                 return WPA_IF_P2P_CLIENT;
 247         }
 248
 249         return WPA_IF_P2P_GROUP;
 250 }
 251
 252
 253 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 254                                                   const u8 *ssid,
 255                                                   size_t ssid_len, int *go)
 256 {
 257         struct wpa_ssid *s;
 258
 259         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 260                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 261                         if (s->disabled != 0 || !s->p2p_group ||
 262                             s->ssid_len != ssid_len ||
 263                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 264                                 continue;
 265                         if (s->mode == WPAS_MODE_P2P_GO &&
 266                             s != wpa_s->current_ssid)
 267                                 continue;
 268                         if (go)
 269                                 *go = s->mode == WPAS_MODE_P2P_GO;
 270                         return wpa_s;
 271                 }
 272         }
 273
 274         return NULL;
 275 }
 276
 277
 278 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 279                                  enum p2p_group_removal_reason removal_reason)
 280 {
 281         struct wpa_ssid *ssid;
 282         char *gtype;
 283         const char *reason;
 284
 285         ssid = wpa_s->current_ssid;
 286 #ifdef ANDROID_P2P
 287         if ((ssid == NULL) && (wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
 288 #else
 289         if (ssid == NULL) {
 290 #endif
 291                 /*
 292                  * The current SSID was not known, but there may still be a
 293                  * pending P2P group interface waiting for provisioning.
 294                  */
 295                 ssid = wpa_s->conf->ssid;
 296                 while (ssid) {
 297                         if (ssid->p2p_group &&
 298                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 299                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 300                                 break;
 301                         ssid = ssid->next;
 302                 }
 303                 if (ssid == NULL) {
 304                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 305                                    "not found");
 306                         return -1;
 307                 }
 308         }
 309         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 310                 gtype = "GO";
 311         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 312                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 313                 wpa_s->reassociate = 0;
 314                 wpa_s->disconnected = 1;
 315                 wpa_supplicant_deauthenticate(wpa_s,
 316                                               WLAN_REASON_DEAUTH_LEAVING);
 317                 gtype = "client";
 318         } else
 319                 gtype = "GO";
 320         if (wpa_s->cross_connect_in_use) {
 321                 wpa_s->cross_connect_in_use = 0;
 322                 wpa_msg(wpa_s->parent, MSG_INFO,
 323                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 324                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 325         }
 326         switch (removal_reason) {
 327         case P2P_GROUP_REMOVAL_REQUESTED:
 328                 reason = " reason=REQUESTED";
 329                 break;
 330         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 331                 reason = " reason=FORMATION_FAILED";
 332                 break;
 333         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 334                 reason = " reason=IDLE";
 335                 break;
 336         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 337                 reason = " reason=UNAVAILABLE";
 338                 break;
 339         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 340                 reason = " reason=GO_ENDING_SESSION";
 341                 break;
 342 #ifdef ANDROID_P2P
 343         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 344                 reason = " reason=FREQ_CONFLICT";
 345                 break;
 346 #endif
 347         default:
 348                 reason = "";
 349                 break;
 350         }
 351         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 352                 wpa_msg(wpa_s->parent, MSG_INFO,
 353                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 354                         wpa_s->ifname, gtype, reason);
 355         }
 356
 357         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 358                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 359
 360         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 361                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 362
 363         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 364                 struct wpa_global *global;
 365                 char *ifname;
 366                 enum wpa_driver_if_type type;
 367                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 368                         wpa_s->ifname);
 369                 global = wpa_s->global;
 370                 ifname = os_strdup(wpa_s->ifname);
 371                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 372                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 373                 wpa_s = global->ifaces;
 374                 if (wpa_s && ifname)
 375                         wpa_drv_if_remove(wpa_s, type, ifname);
 376                 os_free(ifname);
 377                 return 1;
 378         }
 379
 380         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 381         if (ssid && (ssid->p2p_group ||
 382                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 383                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 384                 int id = ssid->id;
 385                 if (ssid == wpa_s->current_ssid) {
 386                         wpa_sm_set_config(wpa_s->wpa, NULL);
 387                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 388                         wpa_s->current_ssid = NULL;
 389                 }
 390                 /*
 391                  * Networks objects created during any P2P activities are not
 392                  * exposed out as they might/will confuse certain non-P2P aware
 393                  * applications since these network objects won't behave like
 394                  * regular ones.
 395                  *
 396                  * Likewise, we don't send out network removed signals for such
 397                  * network objects.
 398                  */
 399                 wpa_config_remove_network(wpa_s->conf, id);
 400                 wpa_supplicant_clear_status(wpa_s);
 401                 wpa_supplicant_cancel_sched_scan(wpa_s);
 402         } else {
 403                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 404                            "found");
 405         }
 406         if (wpa_s->ap_iface)
 407                 wpa_supplicant_ap_deinit(wpa_s);
 408         else
 409                 wpa_drv_deinit_p2p_cli(wpa_s);
 410
 411         return 0;
 412 }
 413
 414
 415 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 416                                      u8 *go_dev_addr,
 417                                      const u8 *ssid, size_t ssid_len)
 418 {
 419         struct wpa_bss *bss;
 420         const u8 *bssid;
 421         struct wpabuf *p2p;
 422         u8 group_capab;
 423         const u8 *addr;
 424
 425         if (wpa_s->go_params)
 426                 bssid = wpa_s->go_params->peer_interface_addr;
 427         else
 428                 bssid = wpa_s->bssid;
 429
 430         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 431         if (bss == NULL) {
 432                 u8 iface_addr[ETH_ALEN];
 433                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 434                                            iface_addr) == 0)
 435                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 436         }
 437         if (bss == NULL) {
 438                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 439                            "group is persistent - BSS " MACSTR " not found",
 440                            MAC2STR(bssid));
 441                 return 0;
 442         }
 443
 444         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 445         if (p2p == NULL) {
 446                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 447                            "group is persistent - BSS " MACSTR
 448                            " did not include P2P IE", MAC2STR(bssid));
 449                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 450                             (u8 *) (bss + 1), bss->ie_len);
 451                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 452                             ((u8 *) bss + 1) + bss->ie_len,
 453                             bss->beacon_ie_len);
 454                 return 0;
 455         }
 456
 457         group_capab = p2p_get_group_capab(p2p);
 458         addr = p2p_get_go_dev_addr(p2p);
 459         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 460                    "group_capab=0x%x", group_capab);
 461         if (addr) {
 462                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 463                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 464                            MAC2STR(addr));
 465         } else
 466                 os_memset(go_dev_addr, 0, ETH_ALEN);
 467         wpabuf_free(p2p);
 468
 469         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 470                    "go_dev_addr=" MACSTR,
 471                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 472
 473         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 474 }
 475
 476
 477 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 478                                            struct wpa_ssid *ssid,
 479                                            const u8 *go_dev_addr)
 480 {
 481         struct wpa_ssid *s;
 482         int changed = 0;
 483
 484         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 485                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 486         for (s = wpa_s->conf->ssid; s; s = s->next) {
 487                 if (s->disabled == 2 &&
 488                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 489                     s->ssid_len == ssid->ssid_len &&
 490                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 491                         break;
 492         }
 493
 494         if (s) {
 495                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 496                            "entry");
 497                 if (ssid->passphrase && !s->passphrase)
 498                         changed = 1;
 499                 else if (ssid->passphrase && s->passphrase &&
 500                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 501                         changed = 1;
 502         } else {
 503                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 504                            "entry");
 505                 changed = 1;
 506                 s = wpa_config_add_network(wpa_s->conf);
 507                 if (s == NULL)
 508                         return -1;
 509
 510                 /*
 511                  * Instead of network_added we emit persistent_group_added
 512                  * notification. Also to keep the defense checks in
 513                  * persistent_group obj registration method, we set the
 514                  * relevant flags in s to designate it as a persistent group.
 515                  */
 516                 s->p2p_group = 1;
 517                 s->p2p_persistent_group = 1;
 518                 wpas_notify_persistent_group_added(wpa_s, s);
 519                 wpa_config_set_network_defaults(s);
 520         }
 521
 522         s->p2p_group = 1;
 523         s->p2p_persistent_group = 1;
 524         s->disabled = 2;
 525         s->bssid_set = 1;
 526         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 527         s->mode = ssid->mode;
 528         s->auth_alg = WPA_AUTH_ALG_OPEN;
 529         s->key_mgmt = WPA_KEY_MGMT_PSK;
 530         s->proto = WPA_PROTO_RSN;
 531         s->pairwise_cipher = WPA_CIPHER_CCMP;
 532         s->export_keys = 1;
 533         if (ssid->passphrase) {
 534                 os_free(s->passphrase);
 535                 s->passphrase = os_strdup(ssid->passphrase);
 536         }
 537         if (ssid->psk_set) {
 538                 s->psk_set = 1;
 539                 os_memcpy(s->psk, ssid->psk, 32);
 540         }
 541         if (s->passphrase && !s->psk_set)
 542                 wpa_config_update_psk(s);
 543         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 544                 os_free(s->ssid);
 545                 s->ssid = os_malloc(ssid->ssid_len);
 546         }
 547         if (s->ssid) {
 548                 s->ssid_len = ssid->ssid_len;
 549                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 550         }
 551
 552 #ifndef CONFIG_NO_CONFIG_WRITE
 553         if (changed && wpa_s->conf->update_config &&
 554             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 555                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 556         }
 557 #endif /* CONFIG_NO_CONFIG_WRITE */
 558
 559         return s->id;
 560 }
 561
 562
 563 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 564                                                  const u8 *addr)
 565 {
 566         struct wpa_ssid *ssid, *s;
 567         u8 *n;
 568         size_t i;
 569         int found = 0;
 570
 571         ssid = wpa_s->current_ssid;
 572         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 573             !ssid->p2p_persistent_group)
 574                 return;
 575
 576         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 577                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 578                         continue;
 579
 580                 if (s->ssid_len == ssid->ssid_len &&
 581                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 582                         break;
 583         }
 584
 585         if (s == NULL)
 586                 return;
 587
 588         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 589                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 590                               ETH_ALEN) != 0)
 591                         continue;
 592
 593                 if (i == s->num_p2p_clients - 1)
 594                         return; /* already the most recent entry */
 595
 596                 /* move the entry to mark it most recent */
 597                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 598                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 599                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 600                 os_memcpy(s->p2p_client_list +
 601                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 602                 found = 1;
 603                 break;
 604         }
 605
 606         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 607                 n = os_realloc_array(s->p2p_client_list,
 608                                      s->num_p2p_clients + 1, ETH_ALEN);
 609                 if (n == NULL)
 610                         return;
 611                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 612                 s->p2p_client_list = n;
 613                 s->num_p2p_clients++;
 614         } else if (!found) {
 615                 /* Not enough room for an additional entry - drop the oldest
 616                  * entry */
 617                 os_memmove(s->p2p_client_list,
 618                            s->p2p_client_list + ETH_ALEN,
 619                            (s->num_p2p_clients - 1) * ETH_ALEN);
 620                 os_memcpy(s->p2p_client_list +
 621                           (s->num_p2p_clients - 1) * ETH_ALEN,
 622                           addr, ETH_ALEN);
 623         }
 624
 625 #ifndef CONFIG_NO_CONFIG_WRITE
 626         if (wpa_s->parent->conf->update_config &&
 627             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 628                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 629 #endif /* CONFIG_NO_CONFIG_WRITE */
 630 }
 631
 632
 633 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 634                                            int success)
 635 {
 636         struct wpa_ssid *ssid;
 637         const char *ssid_txt;
 638         int client;
 639         int persistent;
 640         u8 go_dev_addr[ETH_ALEN];
 641         int network_id = -1;
 642
 643         /*
 644          * This callback is likely called for the main interface. Update wpa_s
 645          * to use the group interface if a new interface was created for the
 646          * group.
 647          */
 648         if (wpa_s->global->p2p_group_formation)
 649                 wpa_s = wpa_s->global->p2p_group_formation;
 650         wpa_s->global->p2p_group_formation = NULL;
 651         wpa_s->p2p_in_provisioning = 0;
 652
 653         if (!success) {
 654                 wpa_msg(wpa_s->parent, MSG_INFO,
 655                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 656                 wpas_p2p_group_delete(wpa_s,
 657                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 658                 return;
 659         }
 660
 661         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 662
 663         ssid = wpa_s->current_ssid;
 664         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 665                 ssid->mode = WPAS_MODE_P2P_GO;
 666                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 667                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 668         }
 669
 670         persistent = 0;
 671         if (ssid) {
 672                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 673                 client = ssid->mode == WPAS_MODE_INFRA;
 674                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 675                         persistent = ssid->p2p_persistent_group;
 676                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 677                                   ETH_ALEN);
 678                 } else
 679                         persistent = wpas_p2p_persistent_group(wpa_s,
 680                                                                go_dev_addr,
 681                                                                ssid->ssid,
 682                                                                ssid->ssid_len);
 683         } else {
 684                 ssid_txt = "";
 685                 client = wpa_s->p2p_group_interface ==
 686                         P2P_GROUP_INTERFACE_CLIENT;
 687                 os_memset(go_dev_addr, 0, ETH_ALEN);
 688         }
 689
 690         wpa_s->show_group_started = 0;
 691         if (client) {
 692                 /*
 693                  * Indicate event only after successfully completed 4-way
 694                  * handshake, i.e., when the interface is ready for data
 695                  * packets.
 696                  */
 697                 wpa_s->show_group_started = 1;
 698 #ifdef ANDROID_P2P
 699                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 700                  * So we need to restore wpa_s->global->p2p_group_formation */
 701                 wpa_s->global->p2p_group_formation = wpa_s;
 702 #endif
 703
 704         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 705                 char psk[65];
 706                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 707                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 708                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 709                         "%s",
 710                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 711                         MAC2STR(go_dev_addr),
 712                         persistent ? " [PERSISTENT]" : "");
 713                 wpas_p2p_cross_connect_setup(wpa_s);
 714                 wpas_p2p_set_group_idle_timeout(wpa_s);
 715         } else {
 716                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 717                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 718                         "go_dev_addr=" MACSTR "%s",
 719                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 720                         ssid && ssid->passphrase ? ssid->passphrase : "",
 721                         MAC2STR(go_dev_addr),
 722                         persistent ? " [PERSISTENT]" : "");
 723                 wpas_p2p_cross_connect_setup(wpa_s);
 724                 wpas_p2p_set_group_idle_timeout(wpa_s);
 725         }
 726
 727         if (persistent)
 728                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 729                                                              ssid, go_dev_addr);
 730         if (network_id < 0 && ssid)
 731                 network_id = ssid->id;
 732         if (!client)
 733                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 734 }
 735
 736
 737 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 738                                            unsigned int freq,
 739                                            const u8 *dst, const u8 *src,
 740                                            const u8 *bssid,
 741                                            const u8 *data, size_t data_len,
 742                                            enum offchannel_send_action_result
 743                                            result)
 744 {
 745         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 746
 747         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 748                 return;
 749         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 750                 return;
 751
 752         switch (result) {
 753         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 754                 res = P2P_SEND_ACTION_SUCCESS;
 755                 break;
 756         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 757                 res = P2P_SEND_ACTION_NO_ACK;
 758                 break;
 759         case OFFCHANNEL_SEND_ACTION_FAILED:
 760                 res = P2P_SEND_ACTION_FAILED;
 761                 break;
 762         }
 763
 764         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 765
 766         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 767             wpa_s->pending_pd_before_join &&
 768             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 769              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 770                 wpa_s->pending_pd_before_join = 0;
 771                 if (wpa_s->p2p_fallback_to_go_neg) {
 772                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 773                                 "during p2p_connect-auto");
 774                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 775                         return;
 776                 }
 777
 778                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 779                            "join-existing-group operation (no ACK for PD "
 780                            "Req)");
 781                 wpas_p2p_join_start(wpa_s);
 782         }
 783 }
 784
 785
 786 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 787                             const u8 *src, const u8 *bssid, const u8 *buf,
 788                             size_t len, unsigned int wait_time)
 789 {
 790         struct wpa_supplicant *wpa_s = ctx;
 791         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 792                                       wait_time,
 793                                       wpas_p2p_send_action_tx_status, 1);
 794 }
 795
 796
 797 static void wpas_send_action_done(void *ctx)
 798 {
 799         struct wpa_supplicant *wpa_s = ctx;
 800         offchannel_send_action_done(wpa_s);
 801 }
 802
 803
 804 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 805                                     struct p2p_go_neg_results *params)
 806 {
 807         if (wpa_s->go_params == NULL) {
 808                 wpa_s->go_params = os_malloc(sizeof(*params));
 809                 if (wpa_s->go_params == NULL)
 810                         return -1;
 811         }
 812         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 813         return 0;
 814 }
 815
 816
 817 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 818                                     struct p2p_go_neg_results *res)
 819 {
 820         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 821                    MAC2STR(res->peer_interface_addr));
 822         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 823                           res->ssid, res->ssid_len);
 824         wpa_supplicant_ap_deinit(wpa_s);
 825         wpas_copy_go_neg_results(wpa_s, res);
 826         if (res->wps_method == WPS_PBC)
 827                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 828         else {
 829                 u16 dev_pw_id = DEV_PW_DEFAULT;
 830                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 831                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 832                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 833                                    wpa_s->p2p_pin, 1, dev_pw_id);
 834         }
 835 }
 836
 837
 838 static void p2p_go_configured(void *ctx, void *data)
 839 {
 840         struct wpa_supplicant *wpa_s = ctx;
 841         struct p2p_go_neg_results *params = data;
 842         struct wpa_ssid *ssid;
 843         int network_id = -1;
 844
 845         ssid = wpa_s->current_ssid;
 846         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 847                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 848                 if (wpa_s->global->p2p_group_formation == wpa_s)
 849                         wpa_s->global->p2p_group_formation = NULL;
 850                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 851                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 852                         "go_dev_addr=" MACSTR "%s",
 853                         wpa_s->ifname,
 854                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 855                         ssid->frequency,
 856                         params->passphrase ? params->passphrase : "",
 857                         MAC2STR(wpa_s->global->p2p_dev_addr),
 858                         params->persistent_group ? " [PERSISTENT]" : "");
 859
 860                 if (params->persistent_group)
 861                         network_id = wpas_p2p_store_persistent_group(
 862                                 wpa_s->parent, ssid,
 863                                 wpa_s->global->p2p_dev_addr);
 864                 if (network_id < 0)
 865                         network_id = ssid->id;
 866                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 867                 wpas_p2p_cross_connect_setup(wpa_s);
 868                 wpas_p2p_set_group_idle_timeout(wpa_s);
 869                 return;
 870         }
 871
 872         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 873         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 874                                               params->peer_interface_addr)) {
 875                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 876                            "filtering");
 877                 return;
 878         }
 879         if (params->wps_method == WPS_PBC)
 880                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 881                                           params->peer_device_addr);
 882         else if (wpa_s->p2p_pin[0])
 883                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 884                                           wpa_s->p2p_pin, NULL, 0);
 885         os_free(wpa_s->go_params);
 886         wpa_s->go_params = NULL;
 887 }
 888
 889
 890 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 891                               struct p2p_go_neg_results *params,
 892                               int group_formation)
 893 {
 894         struct wpa_ssid *ssid;
 895
 896         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 897                 return;
 898
 899         ssid = wpa_config_add_network(wpa_s->conf);
 900         if (ssid == NULL)
 901                 return;
 902
 903         wpa_s->show_group_started = 0;
 904
 905         wpa_config_set_network_defaults(ssid);
 906         ssid->temporary = 1;
 907         ssid->p2p_group = 1;
 908         ssid->p2p_persistent_group = params->persistent_group;
 909         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 910                 WPAS_MODE_P2P_GO;
 911         ssid->frequency = params->freq;
 912         ssid->ht40 = params->ht40;
 913         ssid->ssid = os_zalloc(params->ssid_len + 1);
 914         if (ssid->ssid) {
 915                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 916                 ssid->ssid_len = params->ssid_len;
 917         }
 918         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 919         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 920         ssid->proto = WPA_PROTO_RSN;
 921         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 922         ssid->passphrase = os_strdup(params->passphrase);
 923         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 924
 925         wpa_s->ap_configured_cb = p2p_go_configured;
 926         wpa_s->ap_configured_cb_ctx = wpa_s;
 927         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 928         wpa_s->connect_without_scan = ssid;
 929         wpa_s->reassociate = 1;
 930         wpa_s->disconnected = 0;
 931         wpa_supplicant_req_scan(wpa_s, 0, 0);
 932 }
 933
 934
 935 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 936                                   const struct wpa_supplicant *src)
 937 {
 938         struct wpa_config *d;
 939         const struct wpa_config *s;
 940
 941         d = dst->conf;
 942         s = src->conf;
 943
 944 #define C(n) if (s->n) d->n = os_strdup(s->n)
 945         C(device_name);
 946         C(manufacturer);
 947         C(model_name);
 948         C(model_number);
 949         C(serial_number);
 950         C(config_methods);
 951 #undef C
 952
 953         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 954         os_memcpy(d->sec_device_type, s->sec_device_type,
 955                   sizeof(d->sec_device_type));
 956         d->num_sec_device_types = s->num_sec_device_types;
 957
 958         d->p2p_group_idle = s->p2p_group_idle;
 959         d->p2p_intra_bss = s->p2p_intra_bss;
 960         d->persistent_reconnect = s->persistent_reconnect;
 961         d->max_num_sta = s->max_num_sta;
 962         d->pbc_in_m1 = s->pbc_in_m1;
 963 }
 964
 965
 966 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 967                                         enum wpa_driver_if_type type)
 968 {
 969         char ifname[120], force_ifname[120];
 970
 971         if (wpa_s->pending_interface_name[0]) {
 972                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 973                            "- skip creation of a new one");
 974                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 975                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 976                                    "unknown?! ifname='%s'",
 977                                    wpa_s->pending_interface_name);
 978                         return -1;
 979                 }
 980                 return 0;
 981         }
 982
 983         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 984                     wpa_s->p2p_group_idx);
 985         if (os_strlen(ifname) >= IFNAMSIZ &&
 986             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 987                 /* Try to avoid going over the IFNAMSIZ length limit */
 988                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 989                             wpa_s->p2p_group_idx);
 990         }
 991         force_ifname[0] = '\0';
 992
 993         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 994                    ifname);
 995         wpa_s->p2p_group_idx++;
 996
 997         wpa_s->pending_interface_type = type;
 998         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 999                            wpa_s->pending_interface_addr, NULL) < 0) {
1000                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1001                            "interface");
1002                 return -1;
1003         }
1004
1005         if (force_ifname[0]) {
1006                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1007                            force_ifname);
1008                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1009                            sizeof(wpa_s->pending_interface_name));
1010         } else
1011                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1012                            sizeof(wpa_s->pending_interface_name));
1013         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1014                    MACSTR, wpa_s->pending_interface_name,
1015                    MAC2STR(wpa_s->pending_interface_addr));
1016
1017         return 0;
1018 }
1019
1020
1021 static void wpas_p2p_remove_pending_group_interface(
1022         struct wpa_supplicant *wpa_s)
1023 {
1024         if (!wpa_s->pending_interface_name[0] ||
1025             is_zero_ether_addr(wpa_s->pending_interface_addr))
1026                 return; /* No pending virtual interface */
1027
1028         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1029                    wpa_s->pending_interface_name);
1030         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1031                           wpa_s->pending_interface_name);
1032         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1033         wpa_s->pending_interface_name[0] = '\0';
1034 }
1035
1036
1037 static struct wpa_supplicant *
1038 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1039 {
1040         struct wpa_interface iface;
1041         struct wpa_supplicant *group_wpa_s;
1042
1043         if (!wpa_s->pending_interface_name[0]) {
1044                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1045                 if (!wpas_p2p_create_iface(wpa_s))
1046                         return NULL;
1047                 /*
1048                  * Something has forced us to remove the pending interface; try
1049                  * to create a new one and hope for the best that we will get
1050                  * the same local address.
1051                  */
1052                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1053                                                  WPA_IF_P2P_CLIENT) < 0)
1054                         return NULL;
1055         }
1056
1057         os_memset(&iface, 0, sizeof(iface));
1058         iface.ifname = wpa_s->pending_interface_name;
1059         iface.driver = wpa_s->driver->name;
1060         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1061         iface.driver_param = wpa_s->conf->driver_param;
1062         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1063         if (group_wpa_s == NULL) {
1064                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1065                            "wpa_supplicant interface");
1066                 return NULL;
1067         }
1068         wpa_s->pending_interface_name[0] = '\0';
1069         group_wpa_s->parent = wpa_s;
1070         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1071                 P2P_GROUP_INTERFACE_CLIENT;
1072         wpa_s->global->p2p_group_formation = group_wpa_s;
1073
1074         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1075
1076         return group_wpa_s;
1077 }
1078
1079
1080 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1081                                              void *timeout_ctx)
1082 {
1083         struct wpa_supplicant *wpa_s = eloop_ctx;
1084         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1085         if (wpa_s->global->p2p)
1086                 p2p_group_formation_failed(wpa_s->global->p2p);
1087         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1088                 wpa_drv_p2p_group_formation_failed(wpa_s);
1089         wpas_group_formation_completed(wpa_s, 0);
1090 }
1091
1092
1093 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1094 {
1095         struct wpa_supplicant *wpa_s = ctx;
1096
1097         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1098                 wpa_drv_cancel_remain_on_channel(wpa_s);
1099                 wpa_s->off_channel_freq = 0;
1100                 wpa_s->roc_waiting_drv_freq = 0;
1101         }
1102
1103         if (res->status) {
1104                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1105                         res->status);
1106                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1107                 wpas_p2p_remove_pending_group_interface(wpa_s);
1108                 return;
1109         }
1110
1111         if (wpa_s->p2p_go_ht40)
1112                 res->ht40 = 1;
1113
1114         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1115         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1116
1117         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1118                 struct wpa_ssid *ssid;
1119                 ssid = wpa_config_get_network(wpa_s->conf,
1120                                               wpa_s->p2p_persistent_id);
1121                 if (ssid && ssid->disabled == 2 &&
1122                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1123                         size_t len = os_strlen(ssid->passphrase);
1124                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1125                                    "on requested persistent group");
1126                         os_memcpy(res->passphrase, ssid->passphrase, len);
1127                         res->passphrase[len] = '\0';
1128                 }
1129         }
1130
1131         if (wpa_s->create_p2p_iface) {
1132                 struct wpa_supplicant *group_wpa_s =
1133                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1134                 if (group_wpa_s == NULL) {
1135                         wpas_p2p_remove_pending_group_interface(wpa_s);
1136                         return;
1137                 }
1138                 if (group_wpa_s != wpa_s) {
1139                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1140                                   sizeof(group_wpa_s->p2p_pin));
1141                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1142                 }
1143                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1144                 wpa_s->pending_interface_name[0] = '\0';
1145                 group_wpa_s->p2p_in_provisioning = 1;
1146
1147                 if (res->role_go)
1148                         wpas_start_wps_go(group_wpa_s, res, 1);
1149                 else
1150                         wpas_start_wps_enrollee(group_wpa_s, res);
1151         } else {
1152                 wpa_s->p2p_in_provisioning = 1;
1153                 wpa_s->global->p2p_group_formation = wpa_s;
1154
1155                 if (res->role_go)
1156                         wpas_start_wps_go(wpa_s, res, 1);
1157                 else
1158                         wpas_start_wps_enrollee(ctx, res);
1159         }
1160
1161         wpa_s->p2p_long_listen = 0;
1162         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1163
1164         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1165         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1166                                (res->peer_config_timeout % 100) * 10000,
1167                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1168 }
1169
1170
1171 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1172 {
1173         struct wpa_supplicant *wpa_s = ctx;
1174         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1175                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1176
1177         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1178 }
1179
1180
1181 void wpas_dev_found(void *ctx, const u8 *addr,
1182                     const struct p2p_peer_info *info,
1183                     int new_device)
1184 {
1185 #ifndef CONFIG_NO_STDOUT_DEBUG
1186         struct wpa_supplicant *wpa_s = ctx;
1187         char devtype[WPS_DEV_TYPE_BUFSIZE];
1188
1189         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1190                 " p2p_dev_addr=" MACSTR
1191                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1192                 "dev_capab=0x%x group_capab=0x%x",
1193                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1194                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1195                                      sizeof(devtype)),
1196                 info->device_name, info->config_methods,
1197                 info->dev_capab, info->group_capab);
1198 #endif /* CONFIG_NO_STDOUT_DEBUG */
1199
1200         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1201 }
1202
1203
1204 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1205 {
1206         struct wpa_supplicant *wpa_s = ctx;
1207
1208         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1209                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1210
1211         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1212 }
1213
1214
1215 static int wpas_start_listen(void *ctx, unsigned int freq,
1216                              unsigned int duration,
1217                              const struct wpabuf *probe_resp_ie)
1218 {
1219         struct wpa_supplicant *wpa_s = ctx;
1220
1221         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1222
1223         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1224                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1225                            "report received Probe Request frames");
1226                 return -1;
1227         }
1228
1229         wpa_s->pending_listen_freq = freq;
1230         wpa_s->pending_listen_duration = duration;
1231
1232         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1233                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1234                            "to remain on channel (%u MHz) for Listen "
1235                            "state", freq);
1236                 wpa_s->pending_listen_freq = 0;
1237                 return -1;
1238         }
1239         wpa_s->off_channel_freq = 0;
1240         wpa_s->roc_waiting_drv_freq = freq;
1241
1242         return 0;
1243 }
1244
1245
1246 static void wpas_stop_listen(void *ctx)
1247 {
1248         struct wpa_supplicant *wpa_s = ctx;
1249         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1250                 wpa_drv_cancel_remain_on_channel(wpa_s);
1251                 wpa_s->off_channel_freq = 0;
1252                 wpa_s->roc_waiting_drv_freq = 0;
1253         }
1254         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1255         wpa_drv_probe_req_report(wpa_s, 0);
1256 }
1257
1258
1259 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1260 {
1261         struct wpa_supplicant *wpa_s = ctx;
1262         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1263 }
1264
1265
1266 static struct p2p_srv_bonjour *
1267 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1268                              const struct wpabuf *query)
1269 {
1270         struct p2p_srv_bonjour *bsrv;
1271         size_t len;
1272
1273         len = wpabuf_len(query);
1274         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1275                          struct p2p_srv_bonjour, list) {
1276                 if (len == wpabuf_len(bsrv->query) &&
1277                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1278                               len) == 0)
1279                         return bsrv;
1280         }
1281         return NULL;
1282 }
1283
1284
1285 static struct p2p_srv_upnp *
1286 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1287                           const char *service)
1288 {
1289         struct p2p_srv_upnp *usrv;
1290
1291         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1292                          struct p2p_srv_upnp, list) {
1293                 if (version == usrv->version &&
1294                     os_strcmp(service, usrv->service) == 0)
1295                         return usrv;
1296         }
1297         return NULL;
1298 }
1299
1300
1301 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1302                                         u8 srv_trans_id)
1303 {
1304         u8 *len_pos;
1305
1306         if (wpabuf_tailroom(resp) < 5)
1307                 return;
1308
1309         /* Length (to be filled) */
1310         len_pos = wpabuf_put(resp, 2);
1311         wpabuf_put_u8(resp, srv_proto);
1312         wpabuf_put_u8(resp, srv_trans_id);
1313         /* Status Code */
1314         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1315         /* Response Data: empty */
1316         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1317 }
1318
1319
1320 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1321                                 struct wpabuf *resp, u8 srv_trans_id)
1322 {
1323         struct p2p_srv_bonjour *bsrv;
1324         u8 *len_pos;
1325
1326         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1327
1328         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1329                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1330                 return;
1331         }
1332
1333         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1334                          struct p2p_srv_bonjour, list) {
1335                 if (wpabuf_tailroom(resp) <
1336                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1337                         return;
1338                 /* Length (to be filled) */
1339                 len_pos = wpabuf_put(resp, 2);
1340                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1341                 wpabuf_put_u8(resp, srv_trans_id);
1342                 /* Status Code */
1343                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1344                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1345                                   wpabuf_head(bsrv->resp),
1346                                   wpabuf_len(bsrv->resp));
1347                 /* Response Data */
1348                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1349                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1350                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1351                              2);
1352         }
1353 }
1354
1355
1356 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1357                                 struct wpabuf *resp, u8 srv_trans_id,
1358                                 const u8 *query, size_t query_len)
1359 {
1360         struct p2p_srv_bonjour *bsrv;
1361         struct wpabuf buf;
1362         u8 *len_pos;
1363
1364         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1365                           query, query_len);
1366         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1367                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1368                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1369                                             srv_trans_id);
1370                 return;
1371         }
1372
1373         if (query_len == 0) {
1374                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1375                 return;
1376         }
1377
1378         if (wpabuf_tailroom(resp) < 5)
1379                 return;
1380         /* Length (to be filled) */
1381         len_pos = wpabuf_put(resp, 2);
1382         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1383         wpabuf_put_u8(resp, srv_trans_id);
1384
1385         wpabuf_set(&buf, query, query_len);
1386         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1387         if (bsrv == NULL) {
1388                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1389                            "available");
1390
1391                 /* Status Code */
1392                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1393                 /* Response Data: empty */
1394                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1395                              2);
1396                 return;
1397         }
1398
1399         /* Status Code */
1400         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1401         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1402                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1403
1404         if (wpabuf_tailroom(resp) >=
1405             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1406                 /* Response Data */
1407                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1408                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1409         }
1410         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1411 }
1412
1413
1414 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1415                              struct wpabuf *resp, u8 srv_trans_id)
1416 {
1417         struct p2p_srv_upnp *usrv;
1418         u8 *len_pos;
1419
1420         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1421
1422         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1423                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1424                 return;
1425         }
1426
1427         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1428                          struct p2p_srv_upnp, list) {
1429                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1430                         return;
1431
1432                 /* Length (to be filled) */
1433                 len_pos = wpabuf_put(resp, 2);
1434                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1435                 wpabuf_put_u8(resp, srv_trans_id);
1436
1437                 /* Status Code */
1438                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1439                 /* Response Data */
1440                 wpabuf_put_u8(resp, usrv->version);
1441                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1442                            usrv->service);
1443                 wpabuf_put_str(resp, usrv->service);
1444                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1445                              2);
1446         }
1447 }
1448
1449
1450 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1451                              struct wpabuf *resp, u8 srv_trans_id,
1452                              const u8 *query, size_t query_len)
1453 {
1454         struct p2p_srv_upnp *usrv;
1455         u8 *len_pos;
1456         u8 version;
1457         char *str;
1458         int count = 0;
1459
1460         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1461                           query, query_len);
1462
1463         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1464                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1465                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1466                                             srv_trans_id);
1467                 return;
1468         }
1469
1470         if (query_len == 0) {
1471                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1472                 return;
1473         }
1474
1475         if (wpabuf_tailroom(resp) < 5)
1476                 return;
1477
1478         /* Length (to be filled) */
1479         len_pos = wpabuf_put(resp, 2);
1480         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1481         wpabuf_put_u8(resp, srv_trans_id);
1482
1483         version = query[0];
1484         str = os_malloc(query_len);
1485         if (str == NULL)
1486                 return;
1487         os_memcpy(str, query + 1, query_len - 1);
1488         str[query_len - 1] = '\0';
1489
1490         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1491                          struct p2p_srv_upnp, list) {
1492                 if (version != usrv->version)
1493                         continue;
1494
1495                 if (os_strcmp(str, "ssdp:all") != 0 &&
1496                     os_strstr(usrv->service, str) == NULL)
1497                         continue;
1498
1499                 if (wpabuf_tailroom(resp) < 2)
1500                         break;
1501                 if (count == 0) {
1502                         /* Status Code */
1503                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1504                         /* Response Data */
1505                         wpabuf_put_u8(resp, version);
1506                 } else
1507                         wpabuf_put_u8(resp, ',');
1508
1509                 count++;
1510
1511                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1512                            usrv->service);
1513                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1514                         break;
1515                 wpabuf_put_str(resp, usrv->service);
1516         }
1517         os_free(str);
1518
1519         if (count == 0) {
1520                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1521                            "available");
1522                 /* Status Code */
1523                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1524                 /* Response Data: empty */
1525         }
1526
1527         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1528 }
1529
1530
1531 #ifdef CONFIG_WIFI_DISPLAY
1532 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1533                             struct wpabuf *resp, u8 srv_trans_id,
1534                             const u8 *query, size_t query_len)
1535 {
1536         const u8 *pos;
1537         u8 role;
1538         u8 *len_pos;
1539
1540         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1541
1542         if (!wpa_s->global->wifi_display) {
1543                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1544                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1545                                             srv_trans_id);
1546                 return;
1547         }
1548
1549         if (query_len < 1) {
1550                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1551                            "Role");
1552                 return;
1553         }
1554
1555         if (wpabuf_tailroom(resp) < 5)
1556                 return;
1557
1558         pos = query;
1559         role = *pos++;
1560         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1561
1562         /* TODO: role specific handling */
1563
1564         /* Length (to be filled) */
1565         len_pos = wpabuf_put(resp, 2);
1566         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1567         wpabuf_put_u8(resp, srv_trans_id);
1568         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1569
1570         while (pos < query + query_len) {
1571                 if (*pos < MAX_WFD_SUBELEMS &&
1572                     wpa_s->global->wfd_subelem[*pos] &&
1573                     wpabuf_tailroom(resp) >=
1574                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1575                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1576                                    "subelement %u", *pos);
1577                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1578                 }
1579                 pos++;
1580         }
1581
1582         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1583 }
1584 #endif /* CONFIG_WIFI_DISPLAY */
1585
1586
1587 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1588                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591         const u8 *pos = tlvs;
1592         const u8 *end = tlvs + tlvs_len;
1593         const u8 *tlv_end;
1594         u16 slen;
1595         struct wpabuf *resp;
1596         u8 srv_proto, srv_trans_id;
1597         size_t buf_len;
1598         char *buf;
1599
1600         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1601                     tlvs, tlvs_len);
1602         buf_len = 2 * tlvs_len + 1;
1603         buf = os_malloc(buf_len);
1604         if (buf) {
1605                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1606                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1607                              MACSTR " %u %u %s",
1608                              freq, MAC2STR(sa), dialog_token, update_indic,
1609                              buf);
1610                 os_free(buf);
1611         }
1612
1613         if (wpa_s->p2p_sd_over_ctrl_iface) {
1614                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1615                                            update_indic, tlvs, tlvs_len);
1616                 return; /* to be processed by an external program */
1617         }
1618
1619         resp = wpabuf_alloc(10000);
1620         if (resp == NULL)
1621                 return;
1622
1623         while (pos + 1 < end) {
1624                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1625                 slen = WPA_GET_LE16(pos);
1626                 pos += 2;
1627                 if (pos + slen > end || slen < 2) {
1628                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1629                                    "length");
1630                         wpabuf_free(resp);
1631                         return;
1632                 }
1633                 tlv_end = pos + slen;
1634
1635                 srv_proto = *pos++;
1636                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1637                            srv_proto);
1638                 srv_trans_id = *pos++;
1639                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1640                            srv_trans_id);
1641
1642                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1643                             pos, tlv_end - pos);
1644
1645
1646                 if (wpa_s->force_long_sd) {
1647                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1648                                    "response");
1649                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1650                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1651                         goto done;
1652                 }
1653
1654                 switch (srv_proto) {
1655                 case P2P_SERV_ALL_SERVICES:
1656                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1657                                    "for all services");
1658                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1659                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1660                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1661                                            "discovery protocols available");
1662                                 wpas_sd_add_proto_not_avail(
1663                                         resp, P2P_SERV_ALL_SERVICES,
1664                                         srv_trans_id);
1665                                 break;
1666                         }
1667                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1668                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1669                         break;
1670                 case P2P_SERV_BONJOUR:
1671                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1672                                             pos, tlv_end - pos);
1673                         break;
1674                 case P2P_SERV_UPNP:
1675                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1676                                          pos, tlv_end - pos);
1677                         break;
1678 #ifdef CONFIG_WIFI_DISPLAY
1679                 case P2P_SERV_WIFI_DISPLAY:
1680                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1681                                         pos, tlv_end - pos);
1682                         break;
1683 #endif /* CONFIG_WIFI_DISPLAY */
1684                 default:
1685                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1686                                    "protocol %u", srv_proto);
1687                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1688                                                     srv_trans_id);
1689                         break;
1690                 }
1691
1692                 pos = tlv_end;
1693         }
1694
1695 done:
1696         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1697                                    update_indic, tlvs, tlvs_len);
1698
1699         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1700
1701         wpabuf_free(resp);
1702 }
1703
1704
1705 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1706                       const u8 *tlvs, size_t tlvs_len)
1707 {
1708         struct wpa_supplicant *wpa_s = ctx;
1709         const u8 *pos = tlvs;
1710         const u8 *end = tlvs + tlvs_len;
1711         const u8 *tlv_end;
1712         u16 slen;
1713         size_t buf_len;
1714         char *buf;
1715
1716         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1717                     tlvs, tlvs_len);
1718         if (tlvs_len > 1500) {
1719                 /* TODO: better way for handling this */
1720                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1721                              P2P_EVENT_SERV_DISC_RESP MACSTR
1722                              " %u <long response: %u bytes>",
1723                              MAC2STR(sa), update_indic,
1724                              (unsigned int) tlvs_len);
1725         } else {
1726                 buf_len = 2 * tlvs_len + 1;
1727                 buf = os_malloc(buf_len);
1728                 if (buf) {
1729                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1730                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1731                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1732                                      MAC2STR(sa), update_indic, buf);
1733                         os_free(buf);
1734                 }
1735         }
1736
1737         while (pos < end) {
1738                 u8 srv_proto, srv_trans_id, status;
1739
1740                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1741                 slen = WPA_GET_LE16(pos);
1742                 pos += 2;
1743                 if (pos + slen > end || slen < 3) {
1744                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1745                                    "length");
1746                         return;
1747                 }
1748                 tlv_end = pos + slen;
1749
1750                 srv_proto = *pos++;
1751                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1752                            srv_proto);
1753                 srv_trans_id = *pos++;
1754                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1755                            srv_trans_id);
1756                 status = *pos++;
1757                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1758                            status);
1759
1760                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1761                             pos, tlv_end - pos);
1762
1763                 pos = tlv_end;
1764         }
1765
1766         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1767 }
1768
1769
1770 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1771                         const struct wpabuf *tlvs)
1772 {
1773         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1774                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1775         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1776                 return 0;
1777         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1778 }
1779
1780
1781 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1782                              u8 version, const char *query)
1783 {
1784         struct wpabuf *tlvs;
1785         u64 ret;
1786
1787         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1788         if (tlvs == NULL)
1789                 return 0;
1790         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1791         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1792         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1793         wpabuf_put_u8(tlvs, version);
1794         wpabuf_put_str(tlvs, query);
1795         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1796         wpabuf_free(tlvs);
1797         return ret;
1798 }
1799
1800
1801 #ifdef CONFIG_WIFI_DISPLAY
1802
1803 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1804                                    const struct wpabuf *tlvs)
1805 {
1806         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1807                 return 0;
1808         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1809                 return 0;
1810         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1811 }
1812
1813
1814 #define MAX_WFD_SD_SUBELEMS 20
1815
1816 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1817                                 const char *subelems)
1818 {
1819         u8 *len;
1820         const char *pos;
1821         int val;
1822         int count = 0;
1823
1824         len = wpabuf_put(tlvs, 2);
1825         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1826         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1827
1828         wpabuf_put_u8(tlvs, role);
1829
1830         pos = subelems;
1831         while (*pos) {
1832                 val = atoi(pos);
1833                 if (val >= 0 && val < 256) {
1834                         wpabuf_put_u8(tlvs, val);
1835                         count++;
1836                         if (count == MAX_WFD_SD_SUBELEMS)
1837                                 break;
1838                 }
1839                 pos = os_strchr(pos + 1, ',');
1840                 if (pos == NULL)
1841                         break;
1842                 pos++;
1843         }
1844
1845         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1846 }
1847
1848
1849 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1850                                      const u8 *dst, const char *role)
1851 {
1852         struct wpabuf *tlvs;
1853         u64 ret;
1854         const char *subelems;
1855         u8 id = 1;
1856
1857         subelems = os_strchr(role, ' ');
1858         if (subelems == NULL)
1859                 return 0;
1860         subelems++;
1861
1862         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1863         if (tlvs == NULL)
1864                 return 0;
1865
1866         if (os_strstr(role, "[source]"))
1867                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1868         if (os_strstr(role, "[pri-sink]"))
1869                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1870         if (os_strstr(role, "[sec-sink]"))
1871                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1872         if (os_strstr(role, "[source+sink]"))
1873                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1874
1875         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1876         wpabuf_free(tlvs);
1877         return ret;
1878 }
1879
1880 #endif /* CONFIG_WIFI_DISPLAY */
1881
1882
1883 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1884 {
1885         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1886                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1887         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1888                 return -1;
1889         return p2p_sd_cancel_request(wpa_s->global->p2p,
1890                                      (void *) (uintptr_t) req);
1891 }
1892
1893
1894 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1895                           const u8 *dst, u8 dialog_token,
1896                           const struct wpabuf *resp_tlvs)
1897 {
1898         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1899                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1900                                         resp_tlvs);
1901                 return;
1902         }
1903         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1904                 return;
1905         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1906                         resp_tlvs);
1907 }
1908
1909 #ifdef ANDROID_P2P
1910 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1911 #else
1912 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1913 #endif
1914 {
1915         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1916                 wpa_drv_p2p_service_update(wpa_s);
1917                 return;
1918         }
1919         if (wpa_s->global->p2p)
1920 #ifdef ANDROID_P2P
1921                 p2p_sd_service_update(wpa_s->global->p2p, action);
1922 #else
1923                 p2p_sd_service_update(wpa_s->global->p2p);
1924 #endif
1925 }
1926
1927
1928 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1929 {
1930         dl_list_del(&bsrv->list);
1931         wpabuf_free(bsrv->query);
1932         wpabuf_free(bsrv->resp);
1933         os_free(bsrv);
1934 }
1935
1936
1937 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1938 {
1939         dl_list_del(&usrv->list);
1940         os_free(usrv->service);
1941         os_free(usrv);
1942 }
1943
1944
1945 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1946 {
1947         struct p2p_srv_bonjour *bsrv, *bn;
1948         struct p2p_srv_upnp *usrv, *un;
1949
1950         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1951                               struct p2p_srv_bonjour, list)
1952                 wpas_p2p_srv_bonjour_free(bsrv);
1953
1954         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1955                               struct p2p_srv_upnp, list)
1956                 wpas_p2p_srv_upnp_free(usrv);
1957
1958 #ifdef ANDROID_P2P
1959         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1960 #else
1961         wpas_p2p_sd_service_update(wpa_s);
1962 #endif
1963 }
1964
1965
1966 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1967                                  struct wpabuf *query, struct wpabuf *resp)
1968 {
1969         struct p2p_srv_bonjour *bsrv;
1970
1971         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1972         if (bsrv) {
1973                 wpabuf_free(query);
1974                 wpabuf_free(bsrv->resp);
1975                 bsrv->resp = resp;
1976                 return 0;
1977         }
1978
1979         bsrv = os_zalloc(sizeof(*bsrv));
1980         if (bsrv == NULL)
1981                 return -1;
1982         bsrv->query = query;
1983         bsrv->resp = resp;
1984         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1985
1986 #ifdef ANDROID_P2P
1987         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
1988 #else
1989         wpas_p2p_sd_service_update(wpa_s);
1990 #endif
1991         return 0;
1992 }
1993
1994
1995 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1996                                  const struct wpabuf *query)
1997 {
1998         struct p2p_srv_bonjour *bsrv;
1999
2000         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2001         if (bsrv == NULL)
2002                 return -1;
2003         wpas_p2p_srv_bonjour_free(bsrv);
2004 #ifdef ANDROID_P2P
2005         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2006 #else
2007         wpas_p2p_sd_service_update(wpa_s);
2008 #endif
2009         return 0;
2010 }
2011
2012
2013 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2014                               const char *service)
2015 {
2016         struct p2p_srv_upnp *usrv;
2017
2018         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2019                 return 0; /* Already listed */
2020         usrv = os_zalloc(sizeof(*usrv));
2021         if (usrv == NULL)
2022                 return -1;
2023         usrv->version = version;
2024         usrv->service = os_strdup(service);
2025         if (usrv->service == NULL) {
2026                 os_free(usrv);
2027                 return -1;
2028         }
2029         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2030
2031 #ifdef ANDROID_P2P
2032         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2033 #else
2034         wpas_p2p_sd_service_update(wpa_s);
2035 #endif
2036         return 0;
2037 }
2038
2039
2040 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2041                               const char *service)
2042 {
2043         struct p2p_srv_upnp *usrv;
2044
2045         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2046         if (usrv == NULL)
2047                 return -1;
2048         wpas_p2p_srv_upnp_free(usrv);
2049 #ifdef ANDROID_P2P
2050         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2051 #else
2052         wpas_p2p_sd_service_update(wpa_s);
2053 #endif
2054         return 0;
2055 }
2056
2057
2058 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2059                                          const u8 *peer, const char *params,
2060                                          unsigned int generated_pin)
2061 {
2062         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2063                 MAC2STR(peer), generated_pin, params);
2064 }
2065
2066
2067 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2068                                         const u8 *peer, const char *params)
2069 {
2070         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2071                 MAC2STR(peer), params);
2072 }
2073
2074
2075 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2076                         const u8 *dev_addr, const u8 *pri_dev_type,
2077                         const char *dev_name, u16 supp_config_methods,
2078                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2079                         size_t group_id_len)
2080 {
2081         struct wpa_supplicant *wpa_s = ctx;
2082         char devtype[WPS_DEV_TYPE_BUFSIZE];
2083         char params[300];
2084         u8 empty_dev_type[8];
2085         unsigned int generated_pin = 0;
2086         struct wpa_supplicant *group = NULL;
2087
2088         if (group_id) {
2089                 for (group = wpa_s->global->ifaces; group; group = group->next)
2090                 {
2091                         struct wpa_ssid *s = group->current_ssid;
2092                         if (s != NULL &&
2093                             s->mode == WPAS_MODE_P2P_GO &&
2094                             group_id_len - ETH_ALEN == s->ssid_len &&
2095                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2096                                       s->ssid_len) == 0)
2097                                 break;
2098                 }
2099         }
2100
2101         if (pri_dev_type == NULL) {
2102                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2103                 pri_dev_type = empty_dev_type;
2104         }
2105         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2106                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2107                     "dev_capab=0x%x group_capab=0x%x%s%s",
2108                     MAC2STR(dev_addr),
2109                     wps_dev_type_bin2str(pri_dev_type, devtype,
2110                                          sizeof(devtype)),
2111                     dev_name, supp_config_methods, dev_capab, group_capab,
2112                     group ? " group=" : "",
2113                     group ? group->ifname : "");
2114         params[sizeof(params) - 1] = '\0';
2115
2116         if (config_methods & WPS_CONFIG_DISPLAY) {
2117                 generated_pin = wps_generate_pin();
2118                 wpas_prov_disc_local_display(wpa_s, peer, params,
2119                                              generated_pin);
2120         } else if (config_methods & WPS_CONFIG_KEYPAD)
2121                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2122         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2123                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2124                         "%s", MAC2STR(peer), params);
2125
2126         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2127                                             P2P_PROV_DISC_SUCCESS,
2128                                             config_methods, generated_pin);
2129 }
2130
2131
2132 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2133 {
2134         struct wpa_supplicant *wpa_s = ctx;
2135         unsigned int generated_pin = 0;
2136         char params[20];
2137
2138         if (wpa_s->pending_pd_before_join &&
2139             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2140              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2141                 wpa_s->pending_pd_before_join = 0;
2142                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2143                            "join-existing-group operation");
2144                 wpas_p2p_join_start(wpa_s);
2145                 return;
2146         }
2147
2148         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2149             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2150                 os_snprintf(params, sizeof(params), " peer_go=%d",
2151                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2152         else
2153                 params[0] = '\0';
2154
2155         if (config_methods & WPS_CONFIG_DISPLAY)
2156                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2157         else if (config_methods & WPS_CONFIG_KEYPAD) {
2158                 generated_pin = wps_generate_pin();
2159                 wpas_prov_disc_local_display(wpa_s, peer, params,
2160                                              generated_pin);
2161         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2162                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2163                         "%s", MAC2STR(peer), params);
2164
2165         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2166                                             P2P_PROV_DISC_SUCCESS,
2167                                             config_methods, generated_pin);
2168 }
2169
2170
2171 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2172                                 enum p2p_prov_disc_status status)
2173 {
2174         struct wpa_supplicant *wpa_s = ctx;
2175
2176         if (wpa_s->p2p_fallback_to_go_neg) {
2177                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2178                         "failed - fall back to GO Negotiation");
2179                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2180                 return;
2181         }
2182
2183         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2184                 " p2p_dev_addr=" MACSTR " status=%d",
2185                 MAC2STR(peer), status);
2186
2187         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2188                                             status, 0, 0);
2189 }
2190
2191
2192 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2193                                   const u8 *go_dev_addr, const u8 *ssid,
2194                                   size_t ssid_len, int *go, u8 *group_bssid,
2195                                   int *force_freq, int persistent_group)
2196 {
2197         struct wpa_supplicant *wpa_s = ctx;
2198         struct wpa_ssid *s;
2199         u8 cur_bssid[ETH_ALEN];
2200         int res;
2201         struct wpa_supplicant *grp;
2202
2203         if (!persistent_group) {
2204                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2205                            " to join an active group", MAC2STR(sa));
2206                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2207                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2208                      == 0 ||
2209                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2210                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2211                                    "authorized invitation");
2212                         goto accept_inv;
2213                 }
2214                 /*
2215                  * Do not accept the invitation automatically; notify user and
2216                  * request approval.
2217                  */
2218                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2219         }
2220
2221         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2222         if (grp) {
2223                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2224                            "running persistent group");
2225                 if (*go)
2226                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2227                 goto accept_inv;
2228         }
2229
2230         if (!wpa_s->conf->persistent_reconnect)
2231                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2232
2233         for (s = wpa_s->conf->ssid; s; s = s->next) {
2234                 if (s->disabled == 2 &&
2235                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2236                     s->ssid_len == ssid_len &&
2237                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2238                         break;
2239         }
2240
2241         if (!s) {
2242                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2243                            " requested reinvocation of an unknown group",
2244                            MAC2STR(sa));
2245                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2246         }
2247
2248         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2249                 *go = 1;
2250                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2251                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2252                                    "interface is already in use - reject "
2253                                    "invitation");
2254                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2255                 }
2256                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2257         } else if (s->mode == WPAS_MODE_P2P_GO) {
2258                 *go = 1;
2259                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2260                 {
2261                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2262                                    "interface address for the group");
2263                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2264                 }
2265                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2266                           ETH_ALEN);
2267         }
2268
2269 accept_inv:
2270         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2271             wpa_s->assoc_freq) {
2272                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2273                            "the channel we are already using");
2274                 *force_freq = wpa_s->assoc_freq;
2275         }
2276
2277         res = wpa_drv_shared_freq(wpa_s);
2278         if (res > 0) {
2279                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2280                            "with the channel we are already using on a "
2281                            "shared interface");
2282                 *force_freq = res;
2283         }
2284
2285         return P2P_SC_SUCCESS;
2286 }
2287
2288
2289 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2290                                      const u8 *ssid, size_t ssid_len,
2291                                      const u8 *go_dev_addr, u8 status,
2292                                      int op_freq)
2293 {
2294         struct wpa_supplicant *wpa_s = ctx;
2295         struct wpa_ssid *s;
2296
2297         for (s = wpa_s->conf->ssid; s; s = s->next) {
2298                 if (s->disabled == 2 &&
2299                     s->ssid_len == ssid_len &&
2300                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2301                         break;
2302         }
2303
2304         if (status == P2P_SC_SUCCESS) {
2305                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2306                            " was accepted; op_freq=%d MHz",
2307                            MAC2STR(sa), op_freq);
2308                 if (s) {
2309                         wpas_p2p_group_add_persistent(
2310                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
2311                 } else if (bssid) {
2312                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2313                                       wpa_s->p2p_wps_method, 0);
2314                 }
2315                 return;
2316         }
2317
2318         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2319                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2320                            " was rejected (status %u)", MAC2STR(sa), status);
2321                 return;
2322         }
2323
2324         if (!s) {
2325                 if (bssid) {
2326                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2327                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2328                                 " bssid=" MACSTR " unknown-network",
2329                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2330                                 MAC2STR(bssid));
2331                 } else {
2332                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2333                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2334                                 " unknown-network",
2335                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2336                 }
2337                 return;
2338         }
2339
2340         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2341                 " persistent=%d", MAC2STR(sa), s->id);
2342 }
2343
2344
2345 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2346 {
2347         struct wpa_supplicant *wpa_s = ctx;
2348         struct wpa_ssid *ssid;
2349
2350         if (bssid) {
2351                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2352                         "status=%d " MACSTR,
2353                         status, MAC2STR(bssid));
2354         } else {
2355                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2356                         "status=%d ", status);
2357         }
2358         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2359
2360         if (wpa_s->pending_invite_ssid_id == -1)
2361                 return; /* Invitation to active group */
2362
2363         if (status != P2P_SC_SUCCESS) {
2364                 wpas_p2p_remove_pending_group_interface(wpa_s);
2365                 return;
2366         }
2367
2368         ssid = wpa_config_get_network(wpa_s->conf,
2369                                       wpa_s->pending_invite_ssid_id);
2370         if (ssid == NULL) {
2371                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2372                            "data matching with invitation");
2373                 return;
2374         }
2375
2376         wpas_p2p_group_add_persistent(wpa_s, ssid,
2377                                       ssid->mode == WPAS_MODE_P2P_GO,
2378                                       wpa_s->p2p_persistent_go_freq,
2379                                       wpa_s->p2p_go_ht40);
2380 }
2381
2382
2383 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2384                                     unsigned int freq)
2385 {
2386         unsigned int i;
2387
2388         if (global->p2p_disallow_freq == NULL)
2389                 return 0;
2390
2391         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2392                 if (freq >= global->p2p_disallow_freq[i].min &&
2393                     freq <= global->p2p_disallow_freq[i].max)
2394                         return 1;
2395         }
2396
2397         return 0;
2398 }
2399
2400
2401 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2402 {
2403         reg->channel[reg->channels] = chan;
2404         reg->channels++;
2405 }
2406
2407
2408 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2409                                      struct p2p_channels *chan)
2410 {
2411         int i, cla = 0;
2412
2413         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2414                    "band");
2415
2416         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2417         chan->reg_class[cla].reg_class = 81;
2418         chan->reg_class[cla].channels = 0;
2419         for (i = 0; i < 11; i++) {
2420                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2421                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2422         }
2423         if (chan->reg_class[cla].channels)
2424                 cla++;
2425
2426         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2427                    "band");
2428
2429         /* Operating class 115 - 5 GHz, channels 36-48 */
2430         chan->reg_class[cla].reg_class = 115;
2431         chan->reg_class[cla].channels = 0;
2432         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2433                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2434         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2435                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2436         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2437                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2438         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2439                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2440         if (chan->reg_class[cla].channels)
2441                 cla++;
2442
2443         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2444                    "band");
2445
2446         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2447         chan->reg_class[cla].reg_class = 124;
2448         chan->reg_class[cla].channels = 0;
2449         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2450                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2451         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2452                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2453         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2454                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2455         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2456                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2457         if (chan->reg_class[cla].channels)
2458                 cla++;
2459
2460         chan->reg_classes = cla;
2461         return 0;
2462 }
2463
2464
2465 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2466                                           u16 num_modes,
2467                                           enum hostapd_hw_mode mode)
2468 {
2469         u16 i;
2470
2471         for (i = 0; i < num_modes; i++) {
2472                 if (modes[i].mode == mode)
2473                         return &modes[i];
2474         }
2475
2476         return NULL;
2477 }
2478
2479
2480 static int has_channel(struct wpa_global *global,
2481                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2482 {
2483         int i;
2484         unsigned int freq;
2485
2486         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2487                 chan * 5;
2488         if (wpas_p2p_disallowed_freq(global, freq))
2489                 return 0;
2490
2491         for (i = 0; i < mode->num_channels; i++) {
2492                 if (mode->channels[i].chan == chan) {
2493                         if (flags)
2494                                 *flags = mode->channels[i].flag;
2495                         return !(mode->channels[i].flag &
2496                                  (HOSTAPD_CHAN_DISABLED |
2497                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2498                                   HOSTAPD_CHAN_NO_IBSS |
2499                                   HOSTAPD_CHAN_RADAR));
2500                 }
2501         }
2502
2503         return 0;
2504 }
2505
2506
2507 struct p2p_oper_class_map {
2508         enum hostapd_hw_mode mode;
2509         u8 op_class;
2510         u8 min_chan;
2511         u8 max_chan;
2512         u8 inc;
2513         enum { BW20, BW40PLUS, BW40MINUS } bw;
2514 };
2515
2516 static struct p2p_oper_class_map op_class[] = {
2517         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2518         { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2519 #if 0 /* Do not enable HT40 on 2 GHz for now */
2520         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2521         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2522 #endif
2523         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2524         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2525         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2526         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2527         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2528         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2529         { -1, 0, 0, 0, 0, BW20 }
2530 };
2531
2532
2533 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2534                                    struct hostapd_hw_modes *mode,
2535                                    u8 channel, u8 bw)
2536 {
2537         int flag;
2538
2539         if (!has_channel(wpa_s->global, mode, channel, &flag))
2540                 return -1;
2541         if (bw == BW40MINUS &&
2542             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2543              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2544                 return 0;
2545         if (bw == BW40PLUS &&
2546             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2547              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2548                 return 0;
2549         return 1;
2550 }
2551
2552
2553 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2554                                    struct p2p_channels *chan)
2555 {
2556         struct hostapd_hw_modes *mode;
2557         int cla, op;
2558
2559         if (wpa_s->hw.modes == NULL) {
2560                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2561                            "of all supported channels; assume dualband "
2562                            "support");
2563                 return wpas_p2p_default_channels(wpa_s, chan);
2564         }
2565
2566         cla = 0;
2567
2568         for (op = 0; op_class[op].op_class; op++) {
2569                 struct p2p_oper_class_map *o = &op_class[op];
2570                 u8 ch;
2571                 struct p2p_reg_class *reg = NULL;
2572
2573                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2574                 if (mode == NULL)
2575                         continue;
2576                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2577                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2578                                 continue;
2579                         if (reg == NULL) {
2580                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2581                                            "class %u", o->op_class);
2582                                 reg = &chan->reg_class[cla];
2583                                 cla++;
2584                                 reg->reg_class = o->op_class;
2585                         }
2586                         reg->channel[reg->channels] = ch;
2587                         reg->channels++;
2588                 }
2589                 if (reg) {
2590                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2591                                     reg->channel, reg->channels);
2592                 }
2593         }
2594
2595         chan->reg_classes = cla;
2596
2597         return 0;
2598 }
2599
2600
2601 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2602                            struct hostapd_hw_modes *mode, u8 channel)
2603 {
2604         int op, ret;
2605
2606         for (op = 0; op_class[op].op_class; op++) {
2607                 struct p2p_oper_class_map *o = &op_class[op];
2608                 u8 ch;
2609
2610                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2611                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2612                             o->bw == BW20 || ch != channel)
2613                                 continue;
2614                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2615                         if (ret < 0)
2616                                 continue;
2617                         else if (ret > 0)
2618                                 return (o->bw == BW40MINUS) ? -1 : 1;
2619                         else
2620                                 return 0;
2621                 }
2622         }
2623         return 0;
2624 }
2625
2626
2627 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2628                         size_t buf_len)
2629 {
2630         struct wpa_supplicant *wpa_s = ctx;
2631
2632         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2633                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2634                         break;
2635         }
2636         if (wpa_s == NULL)
2637                 return -1;
2638
2639         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2640 }
2641
2642
2643 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2644 {
2645         struct wpa_supplicant *wpa_s = ctx;
2646
2647         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2648                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2649                 if (ssid == NULL)
2650                         continue;
2651                 if (ssid->mode != WPAS_MODE_INFRA)
2652                         continue;
2653                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2654                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2655                         continue;
2656                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2657                         return 1;
2658         }
2659
2660         return 0;
2661 }
2662
2663
2664 /**
2665  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2666  * @global: Pointer to global data from wpa_supplicant_init()
2667  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2668  * Returns: 0 on success, -1 on failure
2669  */
2670 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2671 {
2672         struct p2p_config p2p;
2673         unsigned int r;
2674         int i;
2675
2676         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2677                 return 0;
2678
2679         if (global->p2p)
2680                 return 0;
2681
2682         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2683                 struct p2p_params params;
2684
2685                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2686                 os_memset(&params, 0, sizeof(params));
2687                 params.dev_name = wpa_s->conf->device_name;
2688                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2689                           WPS_DEV_TYPE_LEN);
2690                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2691                 os_memcpy(params.sec_dev_type,
2692                           wpa_s->conf->sec_device_type,
2693                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2694
2695                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2696                         return -1;
2697
2698                 return 0;
2699         }
2700
2701         os_memset(&p2p, 0, sizeof(p2p));
2702         p2p.msg_ctx = wpa_s;
2703         p2p.cb_ctx = wpa_s;
2704         p2p.p2p_scan = wpas_p2p_scan;
2705         p2p.send_action = wpas_send_action;
2706         p2p.send_action_done = wpas_send_action_done;
2707         p2p.go_neg_completed = wpas_go_neg_completed;
2708         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2709         p2p.dev_found = wpas_dev_found;
2710         p2p.dev_lost = wpas_dev_lost;
2711         p2p.start_listen = wpas_start_listen;
2712         p2p.stop_listen = wpas_stop_listen;
2713         p2p.send_probe_resp = wpas_send_probe_resp;
2714         p2p.sd_request = wpas_sd_request;
2715         p2p.sd_response = wpas_sd_response;
2716         p2p.prov_disc_req = wpas_prov_disc_req;
2717         p2p.prov_disc_resp = wpas_prov_disc_resp;
2718         p2p.prov_disc_fail = wpas_prov_disc_fail;
2719         p2p.invitation_process = wpas_invitation_process;
2720         p2p.invitation_received = wpas_invitation_received;
2721         p2p.invitation_result = wpas_invitation_result;
2722         p2p.get_noa = wpas_get_noa;
2723         p2p.go_connected = wpas_go_connected;
2724
2725         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2726         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2727         p2p.dev_name = wpa_s->conf->device_name;
2728         p2p.manufacturer = wpa_s->conf->manufacturer;
2729         p2p.model_name = wpa_s->conf->model_name;
2730         p2p.model_number = wpa_s->conf->model_number;
2731         p2p.serial_number = wpa_s->conf->serial_number;
2732         if (wpa_s->wps) {
2733                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2734                 p2p.config_methods = wpa_s->wps->config_methods;
2735         }
2736
2737         if (wpa_s->conf->p2p_listen_reg_class &&
2738             wpa_s->conf->p2p_listen_channel) {
2739                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2740                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2741         } else {
2742                 p2p.reg_class = 81;
2743                 /*
2744                  * Pick one of the social channels randomly as the listen
2745                  * channel.
2746                  */
2747                 os_get_random((u8 *) &r, sizeof(r));
2748                 p2p.channel = 1 + (r % 3) * 5;
2749         }
2750         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2751
2752         if (wpa_s->conf->p2p_oper_reg_class &&
2753             wpa_s->conf->p2p_oper_channel) {
2754                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2755                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2756                 p2p.cfg_op_channel = 1;
2757                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2758                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2759
2760         } else {
2761                 p2p.op_reg_class = 81;
2762                 /*
2763                  * Use random operation channel from (1, 6, 11) if no other
2764                  * preference is indicated.
2765                  */
2766                 os_get_random((u8 *) &r, sizeof(r));
2767                 p2p.op_channel = 1 + (r % 3) * 5;
2768                 p2p.cfg_op_channel = 0;
2769                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2770                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2771         }
2772         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2773                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2774                 p2p.country[2] = 0x04;
2775         } else
2776                 os_memcpy(p2p.country, "XX\x04", 3);
2777
2778         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2779                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2780                            "channel list");
2781                 return -1;
2782         }
2783
2784         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2785                   WPS_DEV_TYPE_LEN);
2786
2787         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2788         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2789                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2790
2791         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2792                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2793
2794         p2p.max_peers = 100;
2795
2796         if (wpa_s->conf->p2p_ssid_postfix) {
2797                 p2p.ssid_postfix_len =
2798                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2799                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2800                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2801                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2802                           p2p.ssid_postfix_len);
2803         }
2804
2805         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2806
2807 #ifdef ANDROID_P2P
2808         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
2809                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2810         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)
2811                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2812 #endif
2813
2814         global->p2p = p2p_init(&p2p);
2815         if (global->p2p == NULL)
2816                 return -1;
2817         global->p2p_init_wpa_s = wpa_s;
2818
2819         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2820                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2821                         continue;
2822                 p2p_add_wps_vendor_extension(
2823                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2824         }
2825
2826         return 0;
2827 }
2828
2829
2830 /**
2831  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2832  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2833  *
2834  * This function deinitialize per-interface P2P data.
2835  */
2836 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2837 {
2838         if (wpa_s->driver && wpa_s->drv_priv)
2839                 wpa_drv_probe_req_report(wpa_s, 0);
2840
2841         if (wpa_s->go_params) {
2842                 /* Clear any stored provisioning info */
2843                 p2p_clear_provisioning_info(
2844                         wpa_s->global->p2p,
2845                         wpa_s->go_params->peer_device_addr);
2846         }
2847
2848         os_free(wpa_s->go_params);
2849         wpa_s->go_params = NULL;
2850         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2851         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2852         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2853         wpa_s->p2p_long_listen = 0;
2854         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2855         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2856         wpas_p2p_remove_pending_group_interface(wpa_s);
2857
2858         /* TODO: remove group interface from the driver if this wpa_s instance
2859          * is on top of a P2P group interface */
2860 }
2861
2862
2863 /**
2864  * wpas_p2p_deinit_global - Deinitialize global P2P module
2865  * @global: Pointer to global data from wpa_supplicant_init()
2866  *
2867  * This function deinitializes the global (per device) P2P module.
2868  */
2869 void wpas_p2p_deinit_global(struct wpa_global *global)
2870 {
2871         struct wpa_supplicant *wpa_s, *tmp;
2872
2873         wpa_s = global->ifaces;
2874         if (wpa_s)
2875                 wpas_p2p_service_flush(wpa_s);
2876
2877         if (global->p2p == NULL)
2878                 return;
2879
2880         /* Remove remaining P2P group interfaces */
2881         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2882                 wpa_s = wpa_s->next;
2883         while (wpa_s) {
2884                 tmp = global->ifaces;
2885                 while (tmp &&
2886                        (tmp == wpa_s ||
2887                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2888                         tmp = tmp->next;
2889                 }
2890                 if (tmp == NULL)
2891                         break;
2892                 /* Disconnect from the P2P group and deinit the interface */
2893                 wpas_p2p_disconnect(tmp);
2894         }
2895
2896         /*
2897          * Deinit GO data on any possibly remaining interface (if main
2898          * interface is used as GO).
2899          */
2900         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2901                 if (wpa_s->ap_iface)
2902                         wpas_p2p_group_deinit(wpa_s);
2903         }
2904
2905         p2p_deinit(global->p2p);
2906         global->p2p = NULL;
2907         global->p2p_init_wpa_s = NULL;
2908 }
2909
2910
2911 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2912 {
2913         if (wpa_s->drv_flags &
2914             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2915              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2916                 return 1; /* P2P group requires a new interface in every case
2917                            */
2918         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2919                 return 0; /* driver does not support concurrent operations */
2920         if (wpa_s->global->ifaces->next)
2921                 return 1; /* more that one interface already in use */
2922         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2923                 return 1; /* this interface is already in use */
2924         return 0;
2925 }
2926
2927
2928 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2929                                  const u8 *peer_addr,
2930                                  enum p2p_wps_method wps_method,
2931                                  int go_intent, const u8 *own_interface_addr,
2932                                  unsigned int force_freq, int persistent_group,
2933                                  struct wpa_ssid *ssid)
2934 {
2935         if (persistent_group && wpa_s->conf->persistent_reconnect)
2936                 persistent_group = 2;
2937
2938         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2939                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2940                                            go_intent, own_interface_addr,
2941                                            force_freq, persistent_group);
2942         }
2943
2944         /*
2945          * Increase GO config timeout if HT40 is used since it takes some time
2946          * to scan channels for coex purposes before the BSS can be started.
2947          */
2948         p2p_set_config_timeout(wpa_s->global->p2p,
2949                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2950
2951         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2952                            go_intent, own_interface_addr, force_freq,
2953                            persistent_group, ssid ? ssid->ssid : NULL,
2954                            ssid ? ssid->ssid_len : 0,
2955                            wpa_s->p2p_pd_before_go_neg);
2956 }
2957
2958
2959 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2960                                 const u8 *peer_addr,
2961                                 enum p2p_wps_method wps_method,
2962                                 int go_intent, const u8 *own_interface_addr,
2963                                 unsigned int force_freq, int persistent_group,
2964                                 struct wpa_ssid *ssid)
2965 {
2966         if (persistent_group && wpa_s->conf->persistent_reconnect)
2967                 persistent_group = 2;
2968
2969         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2970                 return -1;
2971
2972         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2973                              go_intent, own_interface_addr, force_freq,
2974                              persistent_group, ssid ? ssid->ssid : NULL,
2975                              ssid ? ssid->ssid_len : 0);
2976 }
2977
2978
2979 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2980 {
2981         wpa_s->p2p_join_scan_count++;
2982         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2983                    wpa_s->p2p_join_scan_count);
2984         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2985                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2986                            " for join operationg - stop join attempt",
2987                            MAC2STR(wpa_s->pending_join_iface_addr));
2988                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2989                 if (wpa_s->p2p_auto_pd) {
2990                         wpa_s->p2p_auto_pd = 0;
2991                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2992                                 " p2p_dev_addr=" MACSTR " status=N/A",
2993                                 MAC2STR(wpa_s->pending_join_dev_addr));
2994                         return;
2995                 }
2996                 wpa_msg(wpa_s->parent, MSG_INFO,
2997                         P2P_EVENT_GROUP_FORMATION_FAILURE);
2998         }
2999 }
3000
3001
3002 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3003 {
3004         struct wpa_supplicant *wpa_s = eloop_ctx;
3005         if (!wpa_s->pending_pd_before_join)
3006                 return;
3007         /*
3008          * Provision Discovery Response may have been lost - try to connect
3009          * anyway since we do not need any information from this PD.
3010          */
3011         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3012                    "try to connect anyway");
3013         wpas_p2p_join_start(wpa_s);
3014 }
3015
3016
3017 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3018 {
3019         struct wpa_supplicant *iface;
3020         int shared_freq;
3021         u8 bssid[ETH_ALEN];
3022
3023         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3024                 return 0;
3025
3026         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3027                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3028                         continue;
3029                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3030                         continue;
3031                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3032                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3033                         shared_freq = iface->current_ssid->frequency;
3034                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3035                         shared_freq = iface->assoc_freq;
3036                 else
3037                         shared_freq = 0;
3038
3039                 if (shared_freq && freq != shared_freq) {
3040                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3041                                    "connected on %d MHz - new connection on "
3042                                    "%d MHz", iface->ifname, shared_freq, freq);
3043                         return 1;
3044                 }
3045         }
3046
3047         shared_freq = wpa_drv_shared_freq(wpa_s);
3048         if (shared_freq > 0 && shared_freq != freq) {
3049                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3050                            "virtual interface connected on %d MHz - new "
3051                            "connection on %d MHz", shared_freq, freq);
3052                 return 1;
3053         }
3054
3055         return 0;
3056 }
3057
3058
3059 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3060                             const u8 *peer_dev_addr)
3061 {
3062         struct wpa_bss *bss;
3063         int updated;
3064
3065         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3066         if (bss == NULL)
3067                 return -1;
3068         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3069                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3070                            "last scan");
3071                 return 0;
3072         }
3073
3074         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3075         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3076                    "%ld.%06ld (%supdated in last scan)",
3077                    bss->last_update.sec, bss->last_update.usec,
3078                    updated ? "": "not ");
3079
3080         return updated;
3081 }
3082
3083
3084 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3085                                    struct wpa_scan_results *scan_res)
3086 {
3087         struct wpa_bss *bss;
3088         int freq;
3089         u8 iface_addr[ETH_ALEN];
3090
3091         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3092
3093         if (wpa_s->global->p2p_disabled)
3094                 return;
3095
3096         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3097                    scan_res ? (int) scan_res->num : -1,
3098                    wpa_s->p2p_auto_join ? "auto_" : "");
3099
3100         if (scan_res)
3101                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3102
3103         if (wpa_s->p2p_auto_pd) {
3104                 int join = wpas_p2p_peer_go(wpa_s,
3105                                             wpa_s->pending_join_dev_addr);
3106                 if (join == 0 &&
3107                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3108                         wpa_s->auto_pd_scan_retry++;
3109                         bss = wpa_bss_get_bssid(wpa_s,
3110                                                 wpa_s->pending_join_dev_addr);
3111                         if (bss) {
3112                                 freq = bss->freq;
3113                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3114                                            "the peer " MACSTR " at %d MHz",
3115                                            wpa_s->auto_pd_scan_retry,
3116                                            MAC2STR(wpa_s->
3117                                                    pending_join_dev_addr),
3118                                            freq);
3119                                 wpas_p2p_join_scan_req(wpa_s, freq);
3120                                 return;
3121                         }
3122                 }
3123
3124                 if (join < 0)
3125                         join = 0;
3126
3127                 wpa_s->p2p_auto_pd = 0;
3128                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3129                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3130                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3131                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3132                                       wpa_s->pending_join_dev_addr,
3133                                       wpa_s->pending_pd_config_methods, join,
3134                                       0) < 0) {
3135                         wpa_s->p2p_auto_pd = 0;
3136                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3137                                 " p2p_dev_addr=" MACSTR " status=N/A",
3138                                 MAC2STR(wpa_s->pending_join_dev_addr));
3139                 }
3140                 return;
3141         }
3142
3143         if (wpa_s->p2p_auto_join) {
3144                 int join = wpas_p2p_peer_go(wpa_s,
3145                                             wpa_s->pending_join_dev_addr);
3146                 if (join < 0) {
3147                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3148                                    "running a GO -> use GO Negotiation");
3149                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3150                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3151                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3152                                          wpa_s->p2p_go_intent,
3153                                          wpa_s->p2p_connect_freq,
3154                                          wpa_s->p2p_persistent_id,
3155                                          wpa_s->p2p_pd_before_go_neg,
3156                                          wpa_s->p2p_go_ht40);
3157                         return;
3158                 }
3159
3160                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3161                            "try to join the group", join ? "" :
3162                            " in older scan");
3163                 if (!join)
3164                         wpa_s->p2p_fallback_to_go_neg = 1;
3165         }
3166
3167         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3168                                  wpa_s->pending_join_iface_addr);
3169         if (freq < 0 &&
3170             p2p_get_interface_addr(wpa_s->global->p2p,
3171                                    wpa_s->pending_join_dev_addr,
3172                                    iface_addr) == 0 &&
3173             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3174         {
3175                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3176                            "address for join from " MACSTR " to " MACSTR
3177                            " based on newly discovered P2P peer entry",
3178                            MAC2STR(wpa_s->pending_join_iface_addr),
3179                            MAC2STR(iface_addr));
3180                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3181                           ETH_ALEN);
3182
3183                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3184                                          wpa_s->pending_join_iface_addr);
3185         }
3186         if (freq >= 0) {
3187                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3188                            "from P2P peer table: %d MHz", freq);
3189         }
3190         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3191         if (bss) {
3192                 freq = bss->freq;
3193                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3194                            "from BSS table: %d MHz", freq);
3195         }
3196         if (freq > 0) {
3197                 u16 method;
3198
3199                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3200                         wpa_msg(wpa_s->parent, MSG_INFO,
3201                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3202                                 "reason=FREQ_CONFLICT");
3203                         return;
3204                 }
3205
3206                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3207                            "prior to joining an existing group (GO " MACSTR
3208                            " freq=%u MHz)",
3209                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3210                 wpa_s->pending_pd_before_join = 1;
3211
3212                 switch (wpa_s->pending_join_wps_method) {
3213                 case WPS_PIN_DISPLAY:
3214                         method = WPS_CONFIG_KEYPAD;
3215                         break;
3216                 case WPS_PIN_KEYPAD:
3217                         method = WPS_CONFIG_DISPLAY;
3218                         break;
3219                 case WPS_PBC:
3220                         method = WPS_CONFIG_PUSHBUTTON;
3221                         break;
3222                 default:
3223                         method = 0;
3224                         break;
3225                 }
3226
3227                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3228                                                wpa_s->pending_join_dev_addr) ==
3229                      method)) {
3230                         /*
3231                          * We have already performed provision discovery for
3232                          * joining the group. Proceed directly to join
3233                          * operation without duplicated provision discovery. */
3234                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3235                                    "with " MACSTR " already done - proceed to "
3236                                    "join",
3237                                    MAC2STR(wpa_s->pending_join_dev_addr));
3238                         wpa_s->pending_pd_before_join = 0;
3239                         goto start;
3240                 }
3241
3242                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3243                                       wpa_s->pending_join_dev_addr, method, 1,
3244                                       freq) < 0) {
3245                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3246                                    "Discovery Request before joining an "
3247                                    "existing group");
3248                         wpa_s->pending_pd_before_join = 0;
3249                         goto start;
3250                 }
3251
3252                 /*
3253                  * Actual join operation will be started from the Action frame
3254                  * TX status callback (if no ACK is received) or when the
3255                  * Provision Discovery Response is received. Use a short
3256                  * timeout as a backup mechanism should the Provision Discovery
3257                  * Response be lost for any reason.
3258                  */
3259                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3260                                      NULL);
3261                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3262                                        wpa_s, NULL);
3263                 return;
3264         }
3265
3266         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3267         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3268         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3269         wpas_p2p_check_join_scan_limit(wpa_s);
3270         return;
3271
3272 start:
3273         /* Start join operation immediately */
3274         wpas_p2p_join_start(wpa_s);
3275 }
3276
3277
3278 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3279 {
3280         int ret;
3281         struct wpa_driver_scan_params params;
3282         struct wpabuf *wps_ie, *ies;
3283         size_t ielen;
3284         int freqs[2] = { 0, 0 };
3285 #ifdef ANDROID_P2P
3286         int oper_freq;
3287
3288         /* If freq is not provided, check the operating freq of the GO and do a
3289          * a directed scan to save time
3290          */
3291         if(!freq) {
3292                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3293                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3294         }
3295 #endif
3296         os_memset(&params, 0, sizeof(params));
3297
3298         /* P2P Wildcard SSID */
3299         params.num_ssids = 1;
3300         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3301         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3302
3303         wpa_s->wps->dev.p2p = 1;
3304         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3305                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3306                                         NULL);
3307         if (wps_ie == NULL) {
3308                 wpas_p2p_scan_res_join(wpa_s, NULL);
3309                 return;
3310         }
3311
3312         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3313         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3314         if (ies == NULL) {
3315                 wpabuf_free(wps_ie);
3316                 wpas_p2p_scan_res_join(wpa_s, NULL);
3317                 return;
3318         }
3319         wpabuf_put_buf(ies, wps_ie);
3320         wpabuf_free(wps_ie);
3321
3322         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3323
3324         params.p2p_probe = 1;
3325         params.extra_ies = wpabuf_head(ies);
3326         params.extra_ies_len = wpabuf_len(ies);
3327         if (freq > 0) {
3328                 freqs[0] = freq;
3329                 params.freqs = freqs;
3330         }
3331
3332         /*
3333          * Run a scan to update BSS table and start Provision Discovery once
3334          * the new scan results become available.
3335          */
3336         ret = wpa_drv_scan(wpa_s, &params);
3337         if (!ret)
3338                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3339
3340         wpabuf_free(ies);
3341
3342         if (ret) {
3343                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3344                            "try again later");
3345                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3346                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3347                 wpas_p2p_check_join_scan_limit(wpa_s);
3348         }
3349 }
3350
3351
3352 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3353 {
3354         struct wpa_supplicant *wpa_s = eloop_ctx;
3355         wpas_p2p_join_scan_req(wpa_s, 0);
3356 }
3357
3358
3359 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3360                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3361                          int auto_join)
3362 {
3363         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3364                    MACSTR " dev " MACSTR ")%s",
3365                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3366                    auto_join ? " (auto_join)" : "");
3367
3368         wpa_s->p2p_auto_pd = 0;
3369         wpa_s->p2p_auto_join = !!auto_join;
3370         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3371         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3372         wpa_s->pending_join_wps_method = wps_method;
3373
3374         /* Make sure we are not running find during connection establishment */
3375         wpas_p2p_stop_find(wpa_s);
3376
3377         wpa_s->p2p_join_scan_count = 0;
3378         wpas_p2p_join_scan(wpa_s, NULL);
3379         return 0;
3380 }
3381
3382
3383 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3384 {
3385         struct wpa_supplicant *group;
3386         struct p2p_go_neg_results res;
3387         struct wpa_bss *bss;
3388
3389         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3390         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3391         if (group == NULL)
3392                 return -1;
3393         if (group != wpa_s) {
3394                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3395                           sizeof(group->p2p_pin));
3396                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3397         }
3398
3399         group->p2p_in_provisioning = 1;
3400         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3401
3402         os_memset(&res, 0, sizeof(res));
3403         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3404                   ETH_ALEN);
3405         res.wps_method = wpa_s->pending_join_wps_method;
3406         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3407         if (bss) {
3408                 res.freq = bss->freq;
3409                 res.ssid_len = bss->ssid_len;
3410                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3411         }
3412
3413         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3414                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3415                            "starting client");
3416                 wpa_drv_cancel_remain_on_channel(wpa_s);
3417                 wpa_s->off_channel_freq = 0;
3418                 wpa_s->roc_waiting_drv_freq = 0;
3419         }
3420         wpas_start_wps_enrollee(group, &res);
3421
3422         /*
3423          * Allow a longer timeout for join-a-running-group than normal 15
3424          * second group formation timeout since the GO may not have authorized
3425          * our connection yet.
3426          */
3427         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3428         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3429                                wpa_s, NULL);
3430
3431         return 0;
3432 }
3433
3434
3435 /**
3436  * wpas_p2p_connect - Request P2P Group Formation to be started
3437  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3438  * @peer_addr: Address of the peer P2P Device
3439  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3440  * @persistent_group: Whether to create a persistent group
3441  * @auto_join: Whether to select join vs. GO Negotiation automatically
3442  * @join: Whether to join an existing group (as a client) instead of starting
3443  *      Group Owner negotiation; @peer_addr is BSSID in that case
3444  * @auth: Whether to only authorize the connection instead of doing that and
3445  *      initiating Group Owner negotiation
3446  * @go_intent: GO Intent or -1 to use default
3447  * @freq: Frequency for the group or 0 for auto-selection
3448  * @persistent_id: Persistent group credentials to use for forcing GO
3449  *      parameters or -1 to generate new values (SSID/passphrase)
3450  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3451  *      interoperability workaround when initiating group formation
3452  * @ht40: Start GO with 40 MHz channel width
3453  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3454  *      failure, -2 on failure due to channel not currently available,
3455  *      -3 if forced channel is not supported
3456  */
3457 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3458                      const char *pin, enum p2p_wps_method wps_method,
3459                      int persistent_group, int auto_join, int join, int auth,
3460                      int go_intent, int freq, int persistent_id, int pd,
3461                      int ht40)
3462 {
3463         int force_freq = 0, oper_freq = 0;
3464         u8 bssid[ETH_ALEN];
3465         int ret = 0;
3466         enum wpa_driver_if_type iftype;
3467         const u8 *if_addr;
3468         struct wpa_ssid *ssid = NULL;
3469
3470         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3471                 return -1;
3472
3473         if (persistent_id >= 0) {
3474                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3475                 if (ssid == NULL || ssid->disabled != 2 ||
3476                     ssid->mode != WPAS_MODE_P2P_GO)
3477                         return -1;
3478         }
3479
3480         if (go_intent < 0)
3481                 go_intent = wpa_s->conf->p2p_go_intent;
3482
3483         if (!auth)
3484                 wpa_s->p2p_long_listen = 0;
3485
3486         wpa_s->p2p_wps_method = wps_method;
3487         wpa_s->p2p_persistent_group = !!persistent_group;
3488         wpa_s->p2p_persistent_id = persistent_id;
3489         wpa_s->p2p_go_intent = go_intent;
3490         wpa_s->p2p_connect_freq = freq;
3491         wpa_s->p2p_fallback_to_go_neg = 0;
3492         wpa_s->p2p_pd_before_go_neg = !!pd;
3493         wpa_s->p2p_go_ht40 = !!ht40;
3494
3495         if (pin)
3496                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3497         else if (wps_method == WPS_PIN_DISPLAY) {
3498                 ret = wps_generate_pin();
3499                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3500                             ret);
3501                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3502                            wpa_s->p2p_pin);
3503         } else
3504                 wpa_s->p2p_pin[0] = '\0';
3505
3506         if (join || auto_join) {
3507                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3508                 if (auth) {
3509                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3510                                    "connect a running group from " MACSTR,
3511                                    MAC2STR(peer_addr));
3512                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3513                         return ret;
3514                 }
3515                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3516                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3517                                            iface_addr) < 0) {
3518                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3519                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3520                                          dev_addr);
3521                 }
3522                 if (auto_join) {
3523                         os_get_time(&wpa_s->p2p_auto_started);
3524                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3525                                    "%ld.%06ld",
3526                                    wpa_s->p2p_auto_started.sec,
3527                                    wpa_s->p2p_auto_started.usec);
3528                 }
3529                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3530                                   auto_join) < 0)
3531                         return -1;
3532                 return ret;
3533         }
3534
3535         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3536             wpa_s->assoc_freq)
3537                 oper_freq = wpa_s->assoc_freq;
3538         else {
3539                 oper_freq = wpa_drv_shared_freq(wpa_s);
3540                 if (oper_freq < 0)
3541                         oper_freq = 0;
3542         }
3543
3544         if (freq > 0) {
3545                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3546                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3547                                    "(%u MHz) is not supported for P2P uses",
3548                                    freq);
3549                         return -3;
3550                 }
3551
3552                 if (oper_freq > 0 && freq != oper_freq &&
3553                     !(wpa_s->drv_flags &
3554                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3555                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3556                                    "on %u MHz while connected on another "
3557                                    "channel (%u MHz)", freq, oper_freq);
3558                         return -2;
3559                 }
3560                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3561                            "requested channel (%u MHz)", freq);
3562                 force_freq = freq;
3563         } else if (oper_freq > 0 &&
3564                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3565                 if (!(wpa_s->drv_flags &
3566                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3567                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3568                                    "while connected on non-P2P supported "
3569                                    "channel (%u MHz)", oper_freq);
3570                         return -2;
3571                 }
3572                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3573                            "(%u MHz) not available for P2P - try to use "
3574                            "another channel", oper_freq);
3575                 force_freq = 0;
3576         } else if (oper_freq > 0) {
3577                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3578                            "channel we are already using (%u MHz) on another "
3579                            "interface", oper_freq);
3580                 force_freq = oper_freq;
3581         }
3582
3583         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3584
3585         if (wpa_s->create_p2p_iface) {
3586                 /* Prepare to add a new interface for the group */
3587                 iftype = WPA_IF_P2P_GROUP;
3588                 if (go_intent == 15)
3589                         iftype = WPA_IF_P2P_GO;
3590                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3591                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3592                                    "interface for the group");
3593                         return -1;
3594                 }
3595
3596                 if_addr = wpa_s->pending_interface_addr;
3597         } else
3598                 if_addr = wpa_s->own_addr;
3599
3600         if (auth) {
3601                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3602                                          go_intent, if_addr,
3603                                          force_freq, persistent_group, ssid) <
3604                     0)
3605                         return -1;
3606                 return ret;
3607         }
3608
3609         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3610                                   go_intent, if_addr, force_freq,
3611                                   persistent_group, ssid) < 0) {
3612                 if (wpa_s->create_p2p_iface)
3613                         wpas_p2p_remove_pending_group_interface(wpa_s);
3614                 return -1;
3615         }
3616         return ret;
3617 }
3618
3619
3620 /**
3621  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3622  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3623  * @freq: Frequency of the channel in MHz
3624  * @duration: Duration of the stay on the channel in milliseconds
3625  *
3626  * This callback is called when the driver indicates that it has started the
3627  * requested remain-on-channel duration.
3628  */
3629 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3630                                    unsigned int freq, unsigned int duration)
3631 {
3632         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3633                 return;
3634         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3635                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3636                               wpa_s->pending_listen_duration);
3637                 wpa_s->pending_listen_freq = 0;
3638         }
3639 }
3640
3641
3642 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3643                                  unsigned int timeout)
3644 {
3645         /* Limit maximum Listen state time based on driver limitation. */
3646         if (timeout > wpa_s->max_remain_on_chan)
3647                 timeout = wpa_s->max_remain_on_chan;
3648
3649         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3650                 return wpa_drv_p2p_listen(wpa_s, timeout);
3651
3652         return p2p_listen(wpa_s->global->p2p, timeout);
3653 }
3654
3655
3656 /**
3657  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3658  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3659  * @freq: Frequency of the channel in MHz
3660  *
3661  * This callback is called when the driver indicates that a remain-on-channel
3662  * operation has been completed, i.e., the duration on the requested channel
3663  * has timed out.
3664  */
3665 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3666                                           unsigned int freq)
3667 {
3668         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3669                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3670                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3671         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3672                 return;
3673         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3674                 return; /* P2P module started a new operation */
3675         if (wpa_s->pending_action_tx)
3676                 return;
3677         if (wpa_s->p2p_long_listen > 0)
3678                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3679         if (wpa_s->p2p_long_listen > 0) {
3680                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3681                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3682         }
3683 }
3684
3685
3686 /**
3687  * wpas_p2p_group_remove - Remove a P2P group
3688  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3689  * @ifname: Network interface name of the group interface or "*" to remove all
3690  *      groups
3691  * Returns: 0 on success, -1 on failure
3692  *
3693  * This function is used to remove a P2P group. This can be used to disconnect
3694  * from a group in which the local end is a P2P Client or to end a P2P Group in
3695  * case the local end is the Group Owner. If a virtual network interface was
3696  * created for this group, that interface will be removed. Otherwise, only the
3697  * configured P2P group network will be removed from the interface.
3698  */
3699 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3700 {
3701         struct wpa_global *global = wpa_s->global;
3702
3703         if (os_strcmp(ifname, "*") == 0) {
3704                 struct wpa_supplicant *prev;
3705                 wpa_s = global->ifaces;
3706                 while (wpa_s) {
3707                         prev = wpa_s;
3708                         wpa_s = wpa_s->next;
3709                         wpas_p2p_disconnect(prev);
3710                 }
3711                 return 0;
3712         }
3713
3714         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3715                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3716                         break;
3717         }
3718
3719         return wpas_p2p_disconnect(wpa_s);
3720 }
3721
3722
3723 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3724                                    struct p2p_go_neg_results *params,
3725                                    int freq, int ht40)
3726 {
3727         u8 bssid[ETH_ALEN];
3728         int res;
3729
3730         os_memset(params, 0, sizeof(*params));
3731         params->role_go = 1;
3732         params->ht40 = ht40;
3733         if (freq) {
3734                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3735                            "frequency %d MHz", freq);
3736                 params->freq = freq;
3737         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3738                    wpa_s->conf->p2p_oper_channel >= 1 &&
3739                    wpa_s->conf->p2p_oper_channel <= 11) {
3740                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3741                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3742                            "frequency %d MHz", params->freq);
3743         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3744                    wpa_s->conf->p2p_oper_reg_class == 124) {
3745                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3746                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3747                            "frequency %d MHz", params->freq);
3748         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3749                    wpa_s->best_overall_freq > 0 &&
3750                    p2p_supported_freq(wpa_s->global->p2p,
3751                                       wpa_s->best_overall_freq)) {
3752                 params->freq = wpa_s->best_overall_freq;
3753                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3754                            "channel %d MHz", params->freq);
3755         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3756                    wpa_s->best_24_freq > 0 &&
3757                    p2p_supported_freq(wpa_s->global->p2p,
3758                                       wpa_s->best_24_freq)) {
3759                 params->freq = wpa_s->best_24_freq;
3760                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3761                            "channel %d MHz", params->freq);
3762         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3763                    wpa_s->best_5_freq > 0 &&
3764                    p2p_supported_freq(wpa_s->global->p2p,
3765                                       wpa_s->best_5_freq)) {
3766                 params->freq = wpa_s->best_5_freq;
3767                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3768                            "channel %d MHz", params->freq);
3769         } else {
3770                 int chan;
3771                 for (chan = 0; chan < 11; chan++) {
3772                         params->freq = 2412 + chan * 5;
3773                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3774                                                       params->freq))
3775                                 break;
3776                 }
3777                 if (chan == 11) {
3778                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3779                                    "allowed");
3780                         return -1;
3781                 }
3782                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3783                            "known)", params->freq);
3784         }
3785
3786         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3787             wpa_s->assoc_freq && !freq) {
3788                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3789                            "already using");
3790                 params->freq = wpa_s->assoc_freq;
3791         }
3792
3793         res = wpa_drv_shared_freq(wpa_s);
3794         if (res > 0 && !freq) {
3795                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3796                            "already using on a shared interface");
3797                 params->freq = res;
3798         } else if (res > 0 && freq != res &&
3799                    !(wpa_s->drv_flags &
3800                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3801                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3802                            "while connected on another channel (%u MHz)",
3803                            freq, res);
3804                 return -1;
3805         }
3806
3807         return 0;
3808 }
3809
3810
3811 static struct wpa_supplicant *
3812 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3813                          int go)
3814 {
3815         struct wpa_supplicant *group_wpa_s;
3816
3817         if (!wpas_p2p_create_iface(wpa_s))
3818                 return wpa_s;
3819
3820         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3821                                          WPA_IF_P2P_CLIENT) < 0)
3822                 return NULL;
3823         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3824         if (group_wpa_s == NULL) {
3825                 wpas_p2p_remove_pending_group_interface(wpa_s);
3826                 return NULL;
3827         }
3828
3829         return group_wpa_s;
3830 }
3831
3832
3833 /**
3834  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3835  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3836  * @persistent_group: Whether to create a persistent group
3837  * @freq: Frequency for the group or 0 to indicate no hardcoding
3838  * Returns: 0 on success, -1 on failure
3839  *
3840  * This function creates a new P2P group with the local end as the Group Owner,
3841  * i.e., without using Group Owner Negotiation.
3842  */
3843 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3844                        int freq, int ht40)
3845 {
3846         struct p2p_go_neg_results params;
3847         unsigned int r;
3848
3849         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3850                 return -1;
3851
3852         /* Make sure we are not running find during connection establishment */
3853         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3854         wpas_p2p_stop_find(wpa_s);
3855
3856         if (freq == 2) {
3857                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3858                            "band");
3859                 if (wpa_s->best_24_freq > 0 &&
3860                     p2p_supported_freq(wpa_s->global->p2p,
3861                                        wpa_s->best_24_freq)) {
3862                         freq = wpa_s->best_24_freq;
3863                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3864                                    "channel: %d MHz", freq);
3865                 } else {
3866                         os_get_random((u8 *) &r, sizeof(r));
3867                         freq = 2412 + (r % 3) * 25;
3868                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3869                                    "channel: %d MHz", freq);
3870                 }
3871         }
3872
3873         if (freq == 5) {
3874                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3875                            "band");
3876                 if (wpa_s->best_5_freq > 0 &&
3877                     p2p_supported_freq(wpa_s->global->p2p,
3878                                        wpa_s->best_5_freq)) {
3879                         freq = wpa_s->best_5_freq;
3880                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3881                                    "channel: %d MHz", freq);
3882                 } else {
3883                         os_get_random((u8 *) &r, sizeof(r));
3884                         freq = 5180 + (r % 4) * 20;
3885                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3886                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3887                                            "5 GHz channel for P2P group");
3888                                 return -1;
3889                         }
3890                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3891                                    "channel: %d MHz", freq);
3892                 }
3893         }
3894
3895         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3896                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3897                            "(%u MHz) is not supported for P2P uses",
3898                            freq);
3899                 return -1;
3900         }
3901
3902         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3903                 return -1;
3904         if (params.freq &&
3905             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3906                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3907                            "(%u MHz) is not supported for P2P uses",
3908                            params.freq);
3909                 return -1;
3910         }
3911         p2p_go_params(wpa_s->global->p2p, &params);
3912         params.persistent_group = persistent_group;
3913
3914         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3915         if (wpa_s == NULL)
3916                 return -1;
3917         wpas_start_wps_go(wpa_s, &params, 0);
3918
3919         return 0;
3920 }
3921
3922
3923 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3924                                  struct wpa_ssid *params, int addr_allocated)
3925 {
3926         struct wpa_ssid *ssid;
3927
3928         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3929         if (wpa_s == NULL)
3930                 return -1;
3931
3932         wpa_supplicant_ap_deinit(wpa_s);
3933
3934         ssid = wpa_config_add_network(wpa_s->conf);
3935         if (ssid == NULL)
3936                 return -1;
3937         wpa_config_set_network_defaults(ssid);
3938         ssid->temporary = 1;
3939         ssid->proto = WPA_PROTO_RSN;
3940         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3941         ssid->group_cipher = WPA_CIPHER_CCMP;
3942         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3943         ssid->ssid = os_malloc(params->ssid_len);
3944         if (ssid->ssid == NULL) {
3945                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3946                 return -1;
3947         }
3948         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3949         ssid->ssid_len = params->ssid_len;
3950         ssid->p2p_group = 1;
3951         ssid->export_keys = 1;
3952         if (params->psk_set) {
3953                 os_memcpy(ssid->psk, params->psk, 32);
3954                 ssid->psk_set = 1;
3955         }
3956         if (params->passphrase)
3957                 ssid->passphrase = os_strdup(params->passphrase);
3958
3959         wpa_supplicant_select_network(wpa_s, ssid);
3960
3961         wpa_s->show_group_started = 1;
3962
3963         return 0;
3964 }
3965
3966
3967 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3968                                   struct wpa_ssid *ssid, int addr_allocated,
3969                                   int freq, int ht40)
3970 {
3971         struct p2p_go_neg_results params;
3972         int go = 0;
3973
3974         if (ssid->disabled != 2 || ssid->ssid == NULL)
3975                 return -1;
3976
3977         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3978             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3979                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3980                            "already running");
3981                 return 0;
3982         }
3983
3984         /* Make sure we are not running find during connection establishment */
3985         wpas_p2p_stop_find(wpa_s);
3986
3987         wpa_s->p2p_fallback_to_go_neg = 0;
3988
3989         if (ssid->mode == WPAS_MODE_INFRA)
3990                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3991
3992         if (ssid->mode != WPAS_MODE_P2P_GO)
3993                 return -1;
3994
3995         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3996                 return -1;
3997
3998         params.role_go = 1;
3999         if (ssid->passphrase == NULL ||
4000             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4001                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4002                            "group");
4003                 return -1;
4004         }
4005         os_strlcpy(params.passphrase, ssid->passphrase,
4006                    sizeof(params.passphrase));
4007         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4008         params.ssid_len = ssid->ssid_len;
4009         params.persistent_group = 1;
4010
4011         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4012         if (wpa_s == NULL)
4013                 return -1;
4014
4015         wpas_start_wps_go(wpa_s, &params, 0);
4016
4017         return 0;
4018 }
4019
4020
4021 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4022                                struct wpabuf *proberesp_ies)
4023 {
4024         struct wpa_supplicant *wpa_s = ctx;
4025         if (wpa_s->ap_iface) {
4026                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4027                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4028                         wpabuf_free(beacon_ies);
4029                         wpabuf_free(proberesp_ies);
4030                         return;
4031                 }
4032                 if (beacon_ies) {
4033                         wpabuf_free(hapd->p2p_beacon_ie);
4034                         hapd->p2p_beacon_ie = beacon_ies;
4035                 }
4036                 wpabuf_free(hapd->p2p_probe_resp_ie);
4037                 hapd->p2p_probe_resp_ie = proberesp_ies;
4038         } else {
4039                 wpabuf_free(beacon_ies);
4040                 wpabuf_free(proberesp_ies);
4041         }
4042         wpa_supplicant_ap_update_beacon(wpa_s);
4043 }
4044
4045
4046 static void wpas_p2p_idle_update(void *ctx, int idle)
4047 {
4048         struct wpa_supplicant *wpa_s = ctx;
4049         if (!wpa_s->ap_iface)
4050                 return;
4051         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4052         if (idle)
4053                 wpas_p2p_set_group_idle_timeout(wpa_s);
4054         else
4055                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4056 }
4057
4058
4059 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4060                                        struct wpa_ssid *ssid)
4061 {
4062         struct p2p_group *group;
4063         struct p2p_group_config *cfg;
4064
4065         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4066                 return NULL;
4067         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4068                 return NULL;
4069
4070         cfg = os_zalloc(sizeof(*cfg));
4071         if (cfg == NULL)
4072                 return NULL;
4073
4074         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4075                 cfg->persistent_group = 2;
4076         else if (ssid->p2p_persistent_group)
4077                 cfg->persistent_group = 1;
4078         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4079         if (wpa_s->max_stations &&
4080             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4081                 cfg->max_clients = wpa_s->max_stations;
4082         else
4083                 cfg->max_clients = wpa_s->conf->max_num_sta;
4084         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4085         cfg->ssid_len = ssid->ssid_len;
4086         cfg->cb_ctx = wpa_s;
4087         cfg->ie_update = wpas_p2p_ie_update;
4088         cfg->idle_update = wpas_p2p_idle_update;
4089
4090         group = p2p_group_init(wpa_s->global->p2p, cfg);
4091         if (group == NULL)
4092                 os_free(cfg);
4093         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4094                 p2p_group_notif_formation_done(group);
4095         wpa_s->p2p_group = group;
4096         return group;
4097 }
4098
4099
4100 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4101                           int registrar)
4102 {
4103         struct wpa_ssid *ssid = wpa_s->current_ssid;
4104
4105         if (!wpa_s->p2p_in_provisioning) {
4106                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4107                            "provisioning not in progress");
4108                 return;
4109         }
4110
4111         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4112                 u8 go_dev_addr[ETH_ALEN];
4113                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4114                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4115                                           ssid->ssid_len);
4116                 /* Clear any stored provisioning info */
4117                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4118         }
4119
4120         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4121                              NULL);
4122         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4123                 /*
4124                  * Use a separate timeout for initial data connection to
4125                  * complete to allow the group to be removed automatically if
4126                  * something goes wrong in this step before the P2P group idle
4127                  * timeout mechanism is taken into use.
4128                  */
4129                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4130                                        wpas_p2p_group_formation_timeout,
4131                                        wpa_s->parent, NULL);
4132         }
4133         if (wpa_s->global->p2p)
4134                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4135         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4136                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4137         wpas_group_formation_completed(wpa_s, 1);
4138 }
4139
4140
4141 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4142                          struct wps_event_fail *fail)
4143 {
4144         if (!wpa_s->p2p_in_provisioning) {
4145                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4146                            "provisioning not in progress");
4147                 return;
4148         }
4149
4150         if (wpa_s->go_params) {
4151                 p2p_clear_provisioning_info(
4152                         wpa_s->global->p2p,
4153                         wpa_s->go_params->peer_device_addr);
4154         }
4155
4156         wpas_notify_p2p_wps_failed(wpa_s, fail);
4157 }
4158
4159
4160 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4161                        const char *config_method,
4162                        enum wpas_p2p_prov_disc_use use)
4163 {
4164         u16 config_methods;
4165
4166         wpa_s->p2p_fallback_to_go_neg = 0;
4167         wpa_s->pending_pd_use = NORMAL_PD;
4168         if (os_strncmp(config_method, "display", 7) == 0)
4169                 config_methods = WPS_CONFIG_DISPLAY;
4170         else if (os_strncmp(config_method, "keypad", 6) == 0)
4171                 config_methods = WPS_CONFIG_KEYPAD;
4172         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4173                  os_strncmp(config_method, "pushbutton", 10) == 0)
4174                 config_methods = WPS_CONFIG_PUSHBUTTON;
4175         else {
4176                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4177                 return -1;
4178         }
4179
4180         if (use == WPAS_P2P_PD_AUTO) {
4181                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4182                 wpa_s->pending_pd_config_methods = config_methods;
4183                 wpa_s->p2p_auto_pd = 1;
4184                 wpa_s->p2p_auto_join = 0;
4185                 wpa_s->pending_pd_before_join = 0;
4186                 wpa_s->auto_pd_scan_retry = 0;
4187                 wpas_p2p_stop_find(wpa_s);
4188                 wpa_s->p2p_join_scan_count = 0;
4189                 os_get_time(&wpa_s->p2p_auto_started);
4190                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4191                            wpa_s->p2p_auto_started.sec,
4192                            wpa_s->p2p_auto_started.usec);
4193                 wpas_p2p_join_scan(wpa_s, NULL);
4194                 return 0;
4195         }
4196
4197         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4198                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4199                                                  config_methods,
4200                                                  use == WPAS_P2P_PD_FOR_JOIN);
4201         }
4202
4203         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4204                 return -1;
4205
4206         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4207                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4208                                  0);
4209 }
4210
4211
4212 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4213                               char *end)
4214 {
4215         return p2p_scan_result_text(ies, ies_len, buf, end);
4216 }
4217
4218
4219 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4220 {
4221         if (!wpa_s->pending_action_tx)
4222                 return;
4223
4224         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4225                    "operation request");
4226         wpabuf_free(wpa_s->pending_action_tx);
4227         wpa_s->pending_action_tx = NULL;
4228 }
4229
4230
4231 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4232                   enum p2p_discovery_type type,
4233                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4234                   const u8 *dev_id, unsigned int search_delay)
4235 {
4236         wpas_p2p_clear_pending_action_tx(wpa_s);
4237         wpa_s->p2p_long_listen = 0;
4238
4239         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4240                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4241
4242         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4243             wpa_s->p2p_in_provisioning)
4244                 return -1;
4245
4246         wpa_supplicant_cancel_sched_scan(wpa_s);
4247
4248         return p2p_find(wpa_s->global->p2p, timeout, type,
4249                         num_req_dev_types, req_dev_types, dev_id,
4250                         search_delay);
4251 }
4252
4253
4254 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4255 {
4256         wpas_p2p_clear_pending_action_tx(wpa_s);
4257         wpa_s->p2p_long_listen = 0;
4258         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4259         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4260         wpa_s->p2p_cb_on_scan_complete = 0;
4261
4262         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4263                 wpa_drv_p2p_stop_find(wpa_s);
4264                 return;
4265         }
4266
4267         if (wpa_s->global->p2p)
4268                 p2p_stop_find(wpa_s->global->p2p);
4269
4270         wpas_p2p_remove_pending_group_interface(wpa_s);
4271 }
4272
4273
4274 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4275 {
4276         struct wpa_supplicant *wpa_s = eloop_ctx;
4277         wpa_s->p2p_long_listen = 0;
4278 }
4279
4280
4281 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4282 {
4283         int res;
4284
4285         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4286                 return -1;
4287
4288         wpa_supplicant_cancel_sched_scan(wpa_s);
4289         wpas_p2p_clear_pending_action_tx(wpa_s);
4290
4291         if (timeout == 0) {
4292                 /*
4293                  * This is a request for unlimited Listen state. However, at
4294                  * least for now, this is mapped to a Listen state for one
4295                  * hour.
4296                  */
4297                 timeout = 3600;
4298         }
4299         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4300         wpa_s->p2p_long_listen = 0;
4301
4302         /*
4303          * Stop previous find/listen operation to avoid trying to request a new
4304          * remain-on-channel operation while the driver is still running the
4305          * previous one.
4306          */
4307         if (wpa_s->global->p2p)
4308                 p2p_stop_find(wpa_s->global->p2p);
4309
4310         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4311         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4312                 wpa_s->p2p_long_listen = timeout * 1000;
4313                 eloop_register_timeout(timeout, 0,
4314                                        wpas_p2p_long_listen_timeout,
4315                                        wpa_s, NULL);
4316         }
4317
4318         return res;
4319 }
4320
4321
4322 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4323                           u8 *buf, size_t len, int p2p_group)
4324 {
4325         struct wpabuf *p2p_ie;
4326         int ret;
4327
4328         if (wpa_s->global->p2p_disabled)
4329                 return -1;
4330         if (wpa_s->global->p2p == NULL)
4331                 return -1;
4332         if (bss == NULL)
4333                 return -1;
4334
4335         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4336         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4337                                p2p_group, p2p_ie);
4338         wpabuf_free(p2p_ie);
4339
4340         return ret;
4341 }
4342
4343
4344 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4345                           const u8 *dst, const u8 *bssid,
4346                           const u8 *ie, size_t ie_len, int ssi_signal)
4347 {
4348         if (wpa_s->global->p2p_disabled)
4349                 return 0;
4350         if (wpa_s->global->p2p == NULL)
4351                 return 0;
4352
4353         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4354                                  ie, ie_len)) {
4355         case P2P_PREQ_NOT_P2P:
4356                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4357                                  ssi_signal);
4358                 /* fall through */
4359         case P2P_PREQ_MALFORMED:
4360         case P2P_PREQ_NOT_LISTEN:
4361         case P2P_PREQ_NOT_PROCESSED:
4362         default: /* make gcc happy */
4363                 return 0;
4364         case P2P_PREQ_PROCESSED:
4365                 return 1;
4366         }
4367 }
4368
4369
4370 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4371                         const u8 *sa, const u8 *bssid,
4372                         u8 category, const u8 *data, size_t len, int freq)
4373 {
4374         if (wpa_s->global->p2p_disabled)
4375                 return;
4376         if (wpa_s->global->p2p == NULL)
4377                 return;
4378
4379         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4380                       freq);
4381 }
4382
4383
4384 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4385 {
4386         if (wpa_s->global->p2p_disabled)
4387                 return;
4388         if (wpa_s->global->p2p == NULL)
4389                 return;
4390
4391         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4392 }
4393
4394
4395 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4396 {
4397         p2p_group_deinit(wpa_s->p2p_group);
4398         wpa_s->p2p_group = NULL;
4399
4400         wpa_s->ap_configured_cb = NULL;
4401         wpa_s->ap_configured_cb_ctx = NULL;
4402         wpa_s->ap_configured_cb_data = NULL;
4403         wpa_s->connect_without_scan = NULL;
4404 }
4405
4406
4407 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4408 {
4409         wpa_s->p2p_long_listen = 0;
4410
4411         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4412                 return wpa_drv_p2p_reject(wpa_s, addr);
4413
4414         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4415                 return -1;
4416
4417         return p2p_reject(wpa_s->global->p2p, addr);
4418 }
4419
4420
4421 /* Invite to reinvoke a persistent group */
4422 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4423                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4424                     int ht40)
4425 {
4426         enum p2p_invite_role role;
4427         u8 *bssid = NULL;
4428
4429         wpa_s->p2p_persistent_go_freq = freq;
4430         wpa_s->p2p_go_ht40 = !!ht40;
4431         if (ssid->mode == WPAS_MODE_P2P_GO) {
4432                 role = P2P_INVITE_ROLE_GO;
4433                 if (peer_addr == NULL) {
4434                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4435                                    "address in invitation command");
4436                         return -1;
4437                 }
4438                 if (wpas_p2p_create_iface(wpa_s)) {
4439                         if (wpas_p2p_add_group_interface(wpa_s,
4440                                                          WPA_IF_P2P_GO) < 0) {
4441                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4442                                            "allocate a new interface for the "
4443                                            "group");
4444                                 return -1;
4445                         }
4446                         bssid = wpa_s->pending_interface_addr;
4447                 } else
4448                         bssid = wpa_s->own_addr;
4449         } else {
4450                 role = P2P_INVITE_ROLE_CLIENT;
4451                 peer_addr = ssid->bssid;
4452         }
4453         wpa_s->pending_invite_ssid_id = ssid->id;
4454
4455         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4456                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4457                                           ssid->ssid, ssid->ssid_len,
4458                                           go_dev_addr, 1);
4459
4460         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4461                 return -1;
4462
4463         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4464                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4465 }
4466
4467
4468 /* Invite to join an active group */
4469 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4470                           const u8 *peer_addr, const u8 *go_dev_addr)
4471 {
4472         struct wpa_global *global = wpa_s->global;
4473         enum p2p_invite_role role;
4474         u8 *bssid = NULL;
4475         struct wpa_ssid *ssid;
4476         int persistent;
4477
4478         wpa_s->p2p_persistent_go_freq = 0;
4479         wpa_s->p2p_go_ht40 = 0;
4480
4481         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4482                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4483                         break;
4484         }
4485         if (wpa_s == NULL) {
4486                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4487                 return -1;
4488         }
4489
4490         ssid = wpa_s->current_ssid;
4491         if (ssid == NULL) {
4492                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4493                            "invitation");
4494                 return -1;
4495         }
4496
4497         persistent = ssid->p2p_persistent_group &&
4498                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4499                                         ssid->ssid, ssid->ssid_len);
4500
4501         if (ssid->mode == WPAS_MODE_P2P_GO) {
4502                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4503                 bssid = wpa_s->own_addr;
4504                 if (go_dev_addr == NULL)
4505                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4506         } else {
4507                 role = P2P_INVITE_ROLE_CLIENT;
4508                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4509                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4510                                    "invite to current group");
4511                         return -1;
4512                 }
4513                 bssid = wpa_s->bssid;
4514                 if (go_dev_addr == NULL &&
4515                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4516                         go_dev_addr = wpa_s->go_dev_addr;
4517         }
4518         wpa_s->parent->pending_invite_ssid_id = -1;
4519
4520         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4521                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4522                                           ssid->ssid, ssid->ssid_len,
4523                                           go_dev_addr, persistent);
4524
4525         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4526                 return -1;
4527
4528         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4529                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4530                           go_dev_addr, persistent);
4531 }
4532
4533
4534 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4535 {
4536         struct wpa_ssid *ssid = wpa_s->current_ssid;
4537         const char *ssid_txt;
4538         u8 go_dev_addr[ETH_ALEN];
4539         int network_id = -1;
4540         int persistent;
4541         int freq;
4542
4543         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4544                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4545                                      wpa_s->parent, NULL);
4546         }
4547
4548         if (!wpa_s->show_group_started || !ssid)
4549                 goto done;
4550
4551         wpa_s->show_group_started = 0;
4552
4553         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4554         os_memset(go_dev_addr, 0, ETH_ALEN);
4555         if (ssid->bssid_set)
4556                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4557         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4558                                                ssid->ssid_len);
4559         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4560
4561         if (wpa_s->global->p2p_group_formation == wpa_s)
4562                 wpa_s->global->p2p_group_formation = NULL;
4563
4564         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4565                 (int) wpa_s->assoc_freq;
4566         if (ssid->passphrase == NULL && ssid->psk_set) {
4567                 char psk[65];
4568                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4569                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4570                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4571                         MACSTR "%s",
4572                         wpa_s->ifname, ssid_txt, freq, psk,
4573                         MAC2STR(go_dev_addr),
4574                         persistent ? " [PERSISTENT]" : "");
4575         } else {
4576                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4577                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4578                         "go_dev_addr=" MACSTR "%s",
4579                         wpa_s->ifname, ssid_txt, freq,
4580                         ssid->passphrase ? ssid->passphrase : "",
4581                         MAC2STR(go_dev_addr),
4582                         persistent ? " [PERSISTENT]" : "");
4583         }
4584
4585         if (persistent)
4586                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4587                                                              ssid, go_dev_addr);
4588         if (network_id < 0)
4589                 network_id = ssid->id;
4590         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4591
4592 done:
4593         if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4594             wpa_s->global->p2p != NULL) {
4595                 wpa_s->p2p_cb_on_scan_complete = 0;
4596                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4597                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4598                                 "continued after successful connection");
4599                         p2p_increase_search_delay(
4600                                 wpa_s->global->p2p,
4601                                 wpas_p2p_search_delay(wpa_s));
4602                 }
4603         }
4604 }
4605
4606
4607 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4608                           u32 interval1, u32 duration2, u32 interval2)
4609 {
4610         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4611                 return -1;
4612         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4613                 return -1;
4614
4615         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4616             wpa_s->current_ssid == NULL ||
4617             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4618                 return -1;
4619
4620         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4621                                 wpa_s->own_addr, wpa_s->assoc_freq,
4622                                 duration1, interval1, duration2, interval2);
4623 }
4624
4625
4626 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4627                         unsigned int interval)
4628 {
4629         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4630                 return -1;
4631
4632         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4633                 return -1;
4634
4635         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4636 }
4637
4638
4639 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4640 {
4641         return wpa_s->current_ssid != NULL &&
4642                 wpa_s->current_ssid->p2p_group &&
4643                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4644 }
4645
4646
4647 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4648 {
4649         struct wpa_supplicant *wpa_s = eloop_ctx;
4650
4651         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4652                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4653                            "disabled");
4654                 return;
4655         }
4656
4657         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4658                    "group");
4659         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4660 }
4661
4662
4663 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4664 {
4665         int timeout;
4666
4667         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4668                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4669
4670         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4671                 return;
4672
4673         timeout = wpa_s->conf->p2p_group_idle;
4674         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4675             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4676             timeout = P2P_MAX_CLIENT_IDLE;
4677
4678         if (timeout == 0)
4679                 return;
4680
4681         if (timeout < 0) {
4682                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4683                         timeout = 0; /* special client mode no-timeout */
4684                 else
4685                         return;
4686         }
4687
4688         if (wpa_s->p2p_in_provisioning) {
4689                 /*
4690                  * Use the normal group formation timeout during the
4691                  * provisioning phase to avoid terminating this process too
4692                  * early due to group idle timeout.
4693                  */
4694                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4695                            "during provisioning");
4696                 return;
4697         }
4698 #ifndef ANDROID_P2P
4699         if (wpa_s->show_group_started) {
4700                 /*
4701                  * Use the normal group formation timeout between the end of
4702                  * the provisioning phase and completion of 4-way handshake to
4703                  * avoid terminating this process too early due to group idle
4704                  * timeout.
4705                  */
4706                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4707                            "while waiting for initial 4-way handshake to "
4708                            "complete");
4709                 return;
4710         }
4711 #endif
4712
4713         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4714                    timeout);
4715         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4716                                wpa_s, NULL);
4717 }
4718
4719
4720 /* Returns 1 if the interface was removed */
4721 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4722                           u16 reason_code, const u8 *ie, size_t ie_len,
4723                           int locally_generated)
4724 {
4725         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4726                 return 0;
4727         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4728                 return 0;
4729
4730         if (!locally_generated)
4731                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4732                                  ie_len);
4733
4734         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4735             wpa_s->current_ssid &&
4736             wpa_s->current_ssid->p2p_group &&
4737             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4738                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4739                            "session is ending");
4740                 if (wpas_p2p_group_delete(wpa_s,
4741                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4742                     > 0)
4743                         return 1;
4744         }
4745
4746         return 0;
4747 }
4748
4749
4750 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4751                              u16 reason_code, const u8 *ie, size_t ie_len,
4752                              int locally_generated)
4753 {
4754         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4755                 return;
4756         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4757                 return;
4758
4759         if (!locally_generated)
4760                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4761                                    ie_len);
4762 }
4763
4764
4765 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4766 {
4767         struct p2p_data *p2p = wpa_s->global->p2p;
4768
4769         if (p2p == NULL)
4770                 return;
4771
4772         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4773                 return;
4774
4775         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4776                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4777
4778         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4779                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4780
4781         if (wpa_s->wps &&
4782             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4783                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4784
4785         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4786                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4787
4788         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4789                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4790                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4791                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4792                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4793         }
4794
4795         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4796                 p2p_set_sec_dev_types(p2p,
4797                                       (void *) wpa_s->conf->sec_device_type,
4798                                       wpa_s->conf->num_sec_device_types);
4799
4800         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4801                 int i;
4802                 p2p_remove_wps_vendor_extensions(p2p);
4803                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4804                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4805                                 continue;
4806                         p2p_add_wps_vendor_extension(
4807                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4808                 }
4809         }
4810
4811         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4812             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4813                 char country[3];
4814                 country[0] = wpa_s->conf->country[0];
4815                 country[1] = wpa_s->conf->country[1];
4816                 country[2] = 0x04;
4817                 p2p_set_country(p2p, country);
4818         }
4819
4820         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4821                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4822                                      wpa_s->conf->p2p_ssid_postfix ?
4823                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4824                                      0);
4825         }
4826
4827         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4828                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4829
4830         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4831                 u8 reg_class, channel;
4832                 int ret;
4833                 unsigned int r;
4834                 if (wpa_s->conf->p2p_listen_reg_class &&
4835                     wpa_s->conf->p2p_listen_channel) {
4836                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4837                         channel = wpa_s->conf->p2p_listen_channel;
4838                 } else {
4839                         reg_class = 81;
4840                         /*
4841                          * Pick one of the social channels randomly as the
4842                          * listen channel.
4843                          */
4844                         os_get_random((u8 *) &r, sizeof(r));
4845                         channel = 1 + (r % 3) * 5;
4846                 }
4847                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4848                 if (ret)
4849                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4850                                    "failed: %d", ret);
4851         }
4852         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4853                 u8 op_reg_class, op_channel, cfg_op_channel;
4854                 int ret = 0;
4855                 unsigned int r;
4856                 if (wpa_s->conf->p2p_oper_reg_class &&
4857                     wpa_s->conf->p2p_oper_channel) {
4858                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4859                         op_channel = wpa_s->conf->p2p_oper_channel;
4860                         cfg_op_channel = 1;
4861                 } else {
4862                         op_reg_class = 81;
4863                         /*
4864                          * Use random operation channel from (1, 6, 11)
4865                          *if no other preference is indicated.
4866                          */
4867                         os_get_random((u8 *) &r, sizeof(r));
4868                         op_channel = 1 + (r % 3) * 5;
4869                         cfg_op_channel = 0;
4870                 }
4871                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4872                                            cfg_op_channel);
4873                 if (ret)
4874                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4875                                    "failed: %d", ret);
4876         }
4877
4878         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4879                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4880                                       wpa_s->conf->p2p_pref_chan) < 0) {
4881                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4882                                    "update failed");
4883                 }
4884         }
4885 }
4886
4887
4888 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4889                      int duration)
4890 {
4891         if (!wpa_s->ap_iface)
4892                 return -1;
4893         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4894                                    duration);
4895 }
4896
4897
4898 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4899 {
4900         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4901                 return -1;
4902         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4903                 return -1;
4904
4905         wpa_s->global->cross_connection = enabled;
4906         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4907
4908         if (!enabled) {
4909                 struct wpa_supplicant *iface;
4910
4911                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4912                 {
4913                         if (iface->cross_connect_enabled == 0)
4914                                 continue;
4915
4916                         iface->cross_connect_enabled = 0;
4917                         iface->cross_connect_in_use = 0;
4918                         wpa_msg(iface->parent, MSG_INFO,
4919                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4920                                 iface->ifname, iface->cross_connect_uplink);
4921                 }
4922         }
4923
4924         return 0;
4925 }
4926
4927
4928 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4929 {
4930         struct wpa_supplicant *iface;
4931
4932         if (!uplink->global->cross_connection)
4933                 return;
4934
4935         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4936                 if (!iface->cross_connect_enabled)
4937                         continue;
4938                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4939                     0)
4940                         continue;
4941                 if (iface->ap_iface == NULL)
4942                         continue;
4943                 if (iface->cross_connect_in_use)
4944                         continue;
4945
4946                 iface->cross_connect_in_use = 1;
4947                 wpa_msg(iface->parent, MSG_INFO,
4948                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4949                         iface->ifname, iface->cross_connect_uplink);
4950         }
4951 }
4952
4953
4954 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4955 {
4956         struct wpa_supplicant *iface;
4957
4958         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4959                 if (!iface->cross_connect_enabled)
4960                         continue;
4961                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4962                     0)
4963                         continue;
4964                 if (!iface->cross_connect_in_use)
4965                         continue;
4966
4967                 wpa_msg(iface->parent, MSG_INFO,
4968                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4969                         iface->ifname, iface->cross_connect_uplink);
4970                 iface->cross_connect_in_use = 0;
4971         }
4972 }
4973
4974
4975 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
4976 {
4977         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
4978             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
4979             wpa_s->cross_connect_disallowed)
4980                 wpas_p2p_disable_cross_connect(wpa_s);
4981         else
4982                 wpas_p2p_enable_cross_connect(wpa_s);
4983         if (!wpa_s->ap_iface &&
4984             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4985                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4986 }
4987
4988
4989 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
4990 {
4991         wpas_p2p_disable_cross_connect(wpa_s);
4992         if (!wpa_s->ap_iface &&
4993             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
4994                                          wpa_s, NULL))
4995                 wpas_p2p_set_group_idle_timeout(wpa_s);
4996 }
4997
4998
4999 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5000 {
5001         struct wpa_supplicant *iface;
5002
5003         if (!wpa_s->global->cross_connection)
5004                 return;
5005
5006         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5007                 if (iface == wpa_s)
5008                         continue;
5009                 if (iface->drv_flags &
5010                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5011                         continue;
5012                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5013                         continue;
5014
5015                 wpa_s->cross_connect_enabled = 1;
5016                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5017                            sizeof(wpa_s->cross_connect_uplink));
5018                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5019                            "%s to %s whenever uplink is available",
5020                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5021
5022                 if (iface->ap_iface || iface->current_ssid == NULL ||
5023                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5024                     iface->cross_connect_disallowed ||
5025                     iface->wpa_state != WPA_COMPLETED)
5026                         break;
5027
5028                 wpa_s->cross_connect_in_use = 1;
5029                 wpa_msg(wpa_s->parent, MSG_INFO,
5030                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5031                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5032                 break;
5033         }
5034 }
5035
5036
5037 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5038 {
5039         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5040             !wpa_s->p2p_in_provisioning)
5041                 return 0; /* not P2P client operation */
5042
5043         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5044                    "session overlap");
5045         if (wpa_s != wpa_s->parent)
5046                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5047
5048         if (wpa_s->global->p2p)
5049                 p2p_group_formation_failed(wpa_s->global->p2p);
5050
5051         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5052                              wpa_s->parent, NULL);
5053
5054         wpas_group_formation_completed(wpa_s, 0);
5055         return 1;
5056 }
5057
5058
5059 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5060 {
5061         struct p2p_channels chan;
5062
5063         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5064                 return;
5065
5066         os_memset(&chan, 0, sizeof(chan));
5067         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5068                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5069                            "channel list");
5070                 return;
5071         }
5072
5073         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5074 }
5075
5076
5077 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5078 {
5079         struct wpa_global *global = wpa_s->global;
5080         int found = 0;
5081         const u8 *peer;
5082
5083         if (global->p2p == NULL)
5084                 return -1;
5085
5086         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5087
5088         if (wpa_s->pending_interface_name[0] &&
5089             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5090                 found = 1;
5091
5092         peer = p2p_get_go_neg_peer(global->p2p);
5093         if (peer) {
5094                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5095                            MACSTR, MAC2STR(peer));
5096                 p2p_unauthorize(global->p2p, peer);
5097                 found = 1;
5098         }
5099
5100         wpas_p2p_stop_find(wpa_s);
5101
5102         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5103                 if (wpa_s == global->p2p_group_formation &&
5104                     (wpa_s->p2p_in_provisioning ||
5105                      wpa_s->parent->pending_interface_type ==
5106                      WPA_IF_P2P_CLIENT)) {
5107                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5108                                    "formation found - cancelling",
5109                                    wpa_s->ifname);
5110                         found = 1;
5111                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5112                                              wpa_s->parent, NULL);
5113                         wpas_p2p_group_delete(wpa_s,
5114                                               P2P_GROUP_REMOVAL_REQUESTED);
5115                         break;
5116                 }
5117         }
5118
5119         if (!found) {
5120                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5121                 return -1;
5122         }
5123
5124         return 0;
5125 }
5126
5127
5128 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5129 {
5130         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5131                 return;
5132
5133         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5134                    "being available anymore");
5135         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5136 }
5137
5138
5139 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5140                                    int freq_24, int freq_5, int freq_overall)
5141 {
5142         struct p2p_data *p2p = wpa_s->global->p2p;
5143         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5144                 return;
5145         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5146 }
5147
5148
5149 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5150 {
5151         u8 peer[ETH_ALEN];
5152         struct p2p_data *p2p = wpa_s->global->p2p;
5153
5154         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5155                 return -1;
5156
5157         if (hwaddr_aton(addr, peer))
5158                 return -1;
5159
5160         return p2p_unauthorize(p2p, peer);
5161 }
5162
5163
5164 /**
5165  * wpas_p2p_disconnect - Disconnect from a P2P Group
5166  * @wpa_s: Pointer to wpa_supplicant data
5167  * Returns: 0 on success, -1 on failure
5168  *
5169  * This can be used to disconnect from a group in which the local end is a P2P
5170  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5171  * virtual network interface was created for this group, that interface will be
5172  * removed. Otherwise, only the configured P2P group network will be removed
5173  * from the interface.
5174  */
5175 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5176 {
5177
5178         if (wpa_s == NULL)
5179                 return -1;
5180
5181         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5182                 -1 : 0;
5183 }
5184
5185
5186 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5187 {
5188 #ifdef ANDROID_P2P
5189         struct wpa_supplicant *group = wpa_s;
5190 #endif
5191
5192         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5193                 return 0;
5194
5195 #ifdef ANDROID_P2P
5196         while (group && (group->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)) {
5197                 if(group->wpa_state == WPA_ASSOCIATED) {
5198                         /* WPA_ASSOCIATED hasn't moved to WPA_COMPLETED. So it could be in WPS
5199                          * or 4Way Hanshake phase. Avoid allowing scan during this time critical
5200                          * phase
5201                          */
5202                         wpa_printf(MSG_ERROR, "P2P: WPS/4way handshake in Progress."
5203                         " Defer SCAN ");
5204                         return 1;
5205                 }
5206                 group = group->next;
5207         }
5208 #endif
5209
5210         return p2p_in_progress(wpa_s->global->p2p);
5211 }
5212
5213
5214 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5215                               struct wpa_ssid *ssid)
5216 {
5217         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5218             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5219                                  wpa_s->parent, NULL) > 0) {
5220                 /**
5221                  * Remove the network by scheduling the group formation
5222                  * timeout to happen immediately. The teardown code
5223                  * needs to be scheduled to run asynch later so that we
5224                  * don't delete data from under ourselves unexpectedly.
5225                  * Calling wpas_p2p_group_formation_timeout directly
5226                  * causes a series of crashes in WPS failure scenarios.
5227                  */
5228                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5229                            "P2P group network getting removed");
5230                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5231                                        wpa_s->parent, NULL);
5232         }
5233 }
5234
5235
5236 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5237                                           const u8 *addr, const u8 *ssid,
5238                                           size_t ssid_len)
5239 {
5240         struct wpa_ssid *s;
5241         size_t i;
5242
5243         for (s = wpa_s->conf->ssid; s; s = s->next) {
5244                 if (s->disabled != 2)
5245                         continue;
5246                 if (ssid &&
5247                     (ssid_len != s->ssid_len ||
5248                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5249                         continue;
5250                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5251                         return s; /* peer is GO in the persistent group */
5252                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5253                         continue;
5254                 for (i = 0; i < s->num_p2p_clients; i++) {
5255                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5256                                       addr, ETH_ALEN) == 0)
5257                                 return s; /* peer is P2P client in persistent
5258                                            * group */
5259                 }
5260         }
5261
5262         return NULL;
5263 }
5264
5265
5266 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5267                                        const u8 *addr)
5268 {
5269         if (addr == NULL)
5270                 return;
5271         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5272 }
5273
5274
5275 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5276                                         int group_added)
5277 {
5278         struct wpa_supplicant *group = wpa_s;
5279         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5280         if (wpa_s->global->p2p_group_formation)
5281                 group = wpa_s->global->p2p_group_formation;
5282         wpa_s = wpa_s->parent;
5283         offchannel_send_action_done(wpa_s);
5284         if (group_added)
5285                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5286         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5287         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5288                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5289                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5290                          wpa_s->p2p_persistent_id,
5291                          wpa_s->p2p_pd_before_go_neg,
5292                          wpa_s->p2p_go_ht40);
5293 }
5294
5295
5296 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5297 {
5298         if (!wpa_s->p2p_fallback_to_go_neg ||
5299             wpa_s->p2p_in_provisioning <= 5)
5300                 return 0;
5301
5302         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5303                 return 0; /* peer operating as a GO */
5304
5305         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5306                 "fallback to GO Negotiation");
5307         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5308
5309         return 1;
5310 }
5311
5312
5313 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5314 {
5315         const char *rn, *rn2;
5316         struct wpa_supplicant *ifs;
5317
5318         if (wpa_s->wpa_state > WPA_SCANNING) {
5319                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5320                         "concurrent operation",
5321                         P2P_CONCURRENT_SEARCH_DELAY);
5322                 return P2P_CONCURRENT_SEARCH_DELAY;
5323         }
5324
5325         if (!wpa_s->driver->get_radio_name)
5326                 return 0;
5327         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5328         if (rn == NULL || rn[0] == '\0')
5329                 return 0;
5330
5331         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5332                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5333                         continue;
5334
5335                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5336                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5337                         continue;
5338                 if (ifs->wpa_state > WPA_SCANNING) {
5339                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5340                                 "delay due to concurrent operation on "
5341                                 "interface %s",
5342                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5343                         return P2P_CONCURRENT_SEARCH_DELAY;
5344                 }
5345         }
5346
5347         return 0;
5348 }
5349
5350 #ifdef ANDROID_P2P
5351 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5352 {
5353         struct wpa_supplicant *iface = NULL;
5354         struct p2p_data *p2p = wpa_s->global->p2p;
5355
5356         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5357                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5358                         (iface->current_ssid->frequency != freq)) {
5359
5360                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5361                                         /* Try to see whether we can move the GO. If it
5362                                          * is not possible, remove the GO interface
5363                                          */
5364                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5365                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5366                                                         iface->current_ssid->frequency = freq;
5367                                                         continue;
5368                                         }
5369                         }
5370
5371                         /* If GO cannot be moved or if the conflicting interface is a
5372                          * P2P Client, remove the interface depending up on the connection
5373                          * priority */
5374                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5375                                 /* STA connection has priority over existing
5376                                  * P2P connection. So remove the interface */
5377                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5378                                                 "concurrent mode frequency conflict");
5379                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5380                         } else {
5381                                 /* Existing connection has the priority. Disable the newly
5382                  * selected network and let the application know about it.
5383                                  */
5384                                 return -1;
5385                         }
5386                 }
5387         }
5388         return 0;
5389 }
5390 #endif