wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_common.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p/p2p.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/p2p_hostapd.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "ap.h"
  26 #include "config_ssid.h"
  27 #include "config.h"
  28 #include "notify.h"
  29 #include "scan.h"
  30 #include "bss.h"
  31 #include "offchannel.h"
  32 #include "wps_supplicant.h"
  33 #include "p2p_supplicant.h"
  34
  35
  36 /*
  37  * How many times to try to scan to find the GO before giving up on join
  38  * request.
  39  */
  40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  41
  42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  43
  44 #ifndef P2P_MAX_CLIENT_IDLE
  45 /*
  46  * How many seconds to try to reconnect to the GO when connection in P2P client
  47  * role has been lost.
  48  */
  49 #ifdef ANDROID_P2P
  50 #define P2P_MAX_CLIENT_IDLE 20
  51 #else
  52 #define P2P_MAX_CLIENT_IDLE 10
  53 #endif /* ANDROID_P2P */
  54 #endif /* P2P_MAX_CLIENT_IDLE */
  55
  56 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  57 /*
  58  * How many seconds to wait for initial 4-way handshake to get completed after
  59  * WPS provisioning step.
  60  */
  61 #define P2P_MAX_INITIAL_CONN_WAIT 10
  62 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  63
  64 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  65 #define P2P_CONCURRENT_SEARCH_DELAY 500
  66 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  67
  68 enum p2p_group_removal_reason {
  69         P2P_GROUP_REMOVAL_UNKNOWN,
  70         P2P_GROUP_REMOVAL_SILENT,
  71         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  72         P2P_GROUP_REMOVAL_REQUESTED,
  73         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  74         P2P_GROUP_REMOVAL_UNAVAILABLE,
  75         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  76 #ifdef ANDROID_P2P
  77         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  78 #endif
  79 };
  80
  81
  82 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  83 static struct wpa_supplicant *
  84 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  85                          int go);
  86 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  87 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  88 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  89 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  90                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  91                          int auto_join);
  92 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  93                                             void *timeout_ctx);
  94 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  95 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  96 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  97 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  98 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  99                                         int group_added);
 100
 101
 102 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 103                                       struct wpa_scan_results *scan_res)
 104 {
 105         size_t i;
 106
 107         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 108                 return;
 109
 110         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 111                    (int) scan_res->num);
 112
 113         for (i = 0; i < scan_res->num; i++) {
 114                 struct wpa_scan_res *bss = scan_res->res[i];
 115                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 116                                          bss->freq, bss->level,
 117                                          (const u8 *) (bss + 1),
 118                                          bss->ie_len) > 0)
 119                         break;
 120         }
 121
 122         p2p_scan_res_handled(wpa_s->global->p2p);
 123 }
 124
 125
 126 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 127                          unsigned int num_req_dev_types,
 128                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 129 {
 130         struct wpa_supplicant *wpa_s = ctx;
 131         struct wpa_supplicant *ifs;
 132         struct wpa_driver_scan_params params;
 133         int ret;
 134         struct wpabuf *wps_ie, *ies;
 135         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 136         size_t ielen;
 137
 138         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 139                 return -1;
 140
 141         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 142                 if (ifs->sta_scan_pending &&
 143                     wpas_p2p_in_progress(wpa_s) == 2) {
 144                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 145                                    "pending station mode scan to be "
 146                                    "completed on interface %s", ifs->ifname);
 147                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 148                         wpa_supplicant_req_scan(ifs, 0, 0);
 149                         return 1;
 150                 }
 151         }
 152
 153         os_memset(&params, 0, sizeof(params));
 154
 155         /* P2P Wildcard SSID */
 156         params.num_ssids = 1;
 157         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 158         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 159
 160         wpa_s->wps->dev.p2p = 1;
 161         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 162                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 163                                         num_req_dev_types, req_dev_types);
 164         if (wps_ie == NULL)
 165                 return -1;
 166
 167         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 168         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 169         if (ies == NULL) {
 170                 wpabuf_free(wps_ie);
 171                 return -1;
 172         }
 173         wpabuf_put_buf(ies, wps_ie);
 174         wpabuf_free(wps_ie);
 175
 176         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 177
 178         params.p2p_probe = 1;
 179         params.extra_ies = wpabuf_head(ies);
 180         params.extra_ies_len = wpabuf_len(ies);
 181
 182         switch (type) {
 183         case P2P_SCAN_SOCIAL:
 184                 params.freqs = social_channels;
 185                 break;
 186         case P2P_SCAN_FULL:
 187                 break;
 188         case P2P_SCAN_SPECIFIC:
 189                 social_channels[0] = freq;
 190                 social_channels[1] = 0;
 191                 params.freqs = social_channels;
 192                 break;
 193         case P2P_SCAN_SOCIAL_PLUS_ONE:
 194                 social_channels[3] = freq;
 195                 params.freqs = social_channels;
 196                 break;
 197         }
 198
 199         ret = wpa_drv_scan(wpa_s, &params);
 200
 201         wpabuf_free(ies);
 202
 203         if (ret) {
 204                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 205                         if (ifs->scanning ||
 206                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 207                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 208                                 ret = 1;
 209                                 break;
 210                         }
 211                 }
 212         } else
 213                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 214
 215         return ret;
 216 }
 217
 218
 219 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 220 {
 221         switch (p2p_group_interface) {
 222         case P2P_GROUP_INTERFACE_PENDING:
 223                 return WPA_IF_P2P_GROUP;
 224         case P2P_GROUP_INTERFACE_GO:
 225                 return WPA_IF_P2P_GO;
 226         case P2P_GROUP_INTERFACE_CLIENT:
 227                 return WPA_IF_P2P_CLIENT;
 228         }
 229
 230         return WPA_IF_P2P_GROUP;
 231 }
 232
 233
 234 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 235                                                   const u8 *ssid,
 236                                                   size_t ssid_len, int *go)
 237 {
 238         struct wpa_ssid *s;
 239
 240         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 241                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 242                         if (s->disabled != 0 || !s->p2p_group ||
 243                             s->ssid_len != ssid_len ||
 244                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 245                                 continue;
 246                         if (s->mode == WPAS_MODE_P2P_GO &&
 247                             s != wpa_s->current_ssid)
 248                                 continue;
 249                         if (go)
 250                                 *go = s->mode == WPAS_MODE_P2P_GO;
 251                         return wpa_s;
 252                 }
 253         }
 254
 255         return NULL;
 256 }
 257
 258
 259 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 260                                  enum p2p_group_removal_reason removal_reason)
 261 {
 262         struct wpa_ssid *ssid;
 263         char *gtype;
 264         const char *reason;
 265
 266         ssid = wpa_s->current_ssid;
 267         if (ssid == NULL) {
 268                 /*
 269                  * The current SSID was not known, but there may still be a
 270                  * pending P2P group interface waiting for provisioning.
 271                  */
 272                 ssid = wpa_s->conf->ssid;
 273                 while (ssid) {
 274                         if (ssid->p2p_group &&
 275                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 276                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 277                                 break;
 278                         ssid = ssid->next;
 279                 }
 280                 if (ssid == NULL &&
 281                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 282                 {
 283                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 284                                    "not found");
 285                         return -1;
 286                 }
 287         }
 288         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 289                 gtype = "GO";
 290         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 291                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 292                 wpa_s->reassociate = 0;
 293                 wpa_s->disconnected = 1;
 294                 wpa_supplicant_deauthenticate(wpa_s,
 295                                               WLAN_REASON_DEAUTH_LEAVING);
 296                 gtype = "client";
 297         } else
 298                 gtype = "GO";
 299         if (wpa_s->cross_connect_in_use) {
 300                 wpa_s->cross_connect_in_use = 0;
 301                 wpa_msg(wpa_s->parent, MSG_INFO,
 302                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 303                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 304         }
 305         switch (removal_reason) {
 306         case P2P_GROUP_REMOVAL_REQUESTED:
 307                 reason = " reason=REQUESTED";
 308                 break;
 309         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 310                 reason = " reason=FORMATION_FAILED";
 311                 break;
 312         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 313                 reason = " reason=IDLE";
 314                 break;
 315         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 316                 reason = " reason=UNAVAILABLE";
 317                 break;
 318         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 319                 reason = " reason=GO_ENDING_SESSION";
 320                 break;
 321 #ifdef ANDROID_P2P
 322         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 323                 reason = " reason=FREQ_CONFLICT";
 324                 break;
 325 #endif
 326         default:
 327                 reason = "";
 328                 break;
 329         }
 330         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 331                 wpa_msg(wpa_s->parent, MSG_INFO,
 332                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 333                         wpa_s->ifname, gtype, reason);
 334         }
 335
 336         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 337                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 338
 339         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 340                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 341
 342         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 343                 struct wpa_global *global;
 344                 char *ifname;
 345                 enum wpa_driver_if_type type;
 346                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 347                         wpa_s->ifname);
 348                 global = wpa_s->global;
 349                 ifname = os_strdup(wpa_s->ifname);
 350                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 351                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 352                 wpa_s = global->ifaces;
 353                 if (wpa_s && ifname)
 354                         wpa_drv_if_remove(wpa_s, type, ifname);
 355                 os_free(ifname);
 356                 return 1;
 357         }
 358
 359         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 360         if (ssid && (ssid->p2p_group ||
 361                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 362                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 363                 int id = ssid->id;
 364                 if (ssid == wpa_s->current_ssid) {
 365                         wpa_sm_set_config(wpa_s->wpa, NULL);
 366                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 367                         wpa_s->current_ssid = NULL;
 368                 }
 369                 /*
 370                  * Networks objects created during any P2P activities are not
 371                  * exposed out as they might/will confuse certain non-P2P aware
 372                  * applications since these network objects won't behave like
 373                  * regular ones.
 374                  *
 375                  * Likewise, we don't send out network removed signals for such
 376                  * network objects.
 377                  */
 378                 wpa_config_remove_network(wpa_s->conf, id);
 379                 wpa_supplicant_clear_status(wpa_s);
 380                 wpa_supplicant_cancel_sched_scan(wpa_s);
 381         } else {
 382                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 383                            "found");
 384         }
 385         if (wpa_s->ap_iface)
 386                 wpa_supplicant_ap_deinit(wpa_s);
 387         else
 388                 wpa_drv_deinit_p2p_cli(wpa_s);
 389
 390         return 0;
 391 }
 392
 393
 394 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 395                                      u8 *go_dev_addr,
 396                                      const u8 *ssid, size_t ssid_len)
 397 {
 398         struct wpa_bss *bss;
 399         const u8 *bssid;
 400         struct wpabuf *p2p;
 401         u8 group_capab;
 402         const u8 *addr;
 403
 404         if (wpa_s->go_params)
 405                 bssid = wpa_s->go_params->peer_interface_addr;
 406         else
 407                 bssid = wpa_s->bssid;
 408
 409         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 410         if (bss == NULL) {
 411                 u8 iface_addr[ETH_ALEN];
 412                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 413                                            iface_addr) == 0)
 414                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 415         }
 416         if (bss == NULL) {
 417                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 418                            "group is persistent - BSS " MACSTR " not found",
 419                            MAC2STR(bssid));
 420                 return 0;
 421         }
 422
 423         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 424         if (p2p == NULL) {
 425                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 426                            "group is persistent - BSS " MACSTR
 427                            " did not include P2P IE", MAC2STR(bssid));
 428                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 429                             (u8 *) (bss + 1), bss->ie_len);
 430                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 431                             ((u8 *) bss + 1) + bss->ie_len,
 432                             bss->beacon_ie_len);
 433                 return 0;
 434         }
 435
 436         group_capab = p2p_get_group_capab(p2p);
 437         addr = p2p_get_go_dev_addr(p2p);
 438         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 439                    "group_capab=0x%x", group_capab);
 440         if (addr) {
 441                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 442                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 443                            MAC2STR(addr));
 444         } else
 445                 os_memset(go_dev_addr, 0, ETH_ALEN);
 446         wpabuf_free(p2p);
 447
 448         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 449                    "go_dev_addr=" MACSTR,
 450                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 451
 452         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 453 }
 454
 455
 456 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 457                                            struct wpa_ssid *ssid,
 458                                            const u8 *go_dev_addr)
 459 {
 460         struct wpa_ssid *s;
 461         int changed = 0;
 462
 463         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 464                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 465         for (s = wpa_s->conf->ssid; s; s = s->next) {
 466                 if (s->disabled == 2 &&
 467                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 468                     s->ssid_len == ssid->ssid_len &&
 469                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 470                         break;
 471         }
 472
 473         if (s) {
 474                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 475                            "entry");
 476                 if (ssid->passphrase && !s->passphrase)
 477                         changed = 1;
 478                 else if (ssid->passphrase && s->passphrase &&
 479                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 480                         changed = 1;
 481         } else {
 482                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 483                            "entry");
 484                 changed = 1;
 485                 s = wpa_config_add_network(wpa_s->conf);
 486                 if (s == NULL)
 487                         return -1;
 488
 489                 /*
 490                  * Instead of network_added we emit persistent_group_added
 491                  * notification. Also to keep the defense checks in
 492                  * persistent_group obj registration method, we set the
 493                  * relevant flags in s to designate it as a persistent group.
 494                  */
 495                 s->p2p_group = 1;
 496                 s->p2p_persistent_group = 1;
 497                 wpas_notify_persistent_group_added(wpa_s, s);
 498                 wpa_config_set_network_defaults(s);
 499         }
 500
 501         s->p2p_group = 1;
 502         s->p2p_persistent_group = 1;
 503         s->disabled = 2;
 504         s->bssid_set = 1;
 505         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 506         s->mode = ssid->mode;
 507         s->auth_alg = WPA_AUTH_ALG_OPEN;
 508         s->key_mgmt = WPA_KEY_MGMT_PSK;
 509         s->proto = WPA_PROTO_RSN;
 510         s->pairwise_cipher = WPA_CIPHER_CCMP;
 511         s->export_keys = 1;
 512         if (ssid->passphrase) {
 513                 os_free(s->passphrase);
 514                 s->passphrase = os_strdup(ssid->passphrase);
 515         }
 516         if (ssid->psk_set) {
 517                 s->psk_set = 1;
 518                 os_memcpy(s->psk, ssid->psk, 32);
 519         }
 520         if (s->passphrase && !s->psk_set)
 521                 wpa_config_update_psk(s);
 522         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 523                 os_free(s->ssid);
 524                 s->ssid = os_malloc(ssid->ssid_len);
 525         }
 526         if (s->ssid) {
 527                 s->ssid_len = ssid->ssid_len;
 528                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 529         }
 530
 531 #ifndef CONFIG_NO_CONFIG_WRITE
 532         if (changed && wpa_s->conf->update_config &&
 533             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 534                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 535         }
 536 #endif /* CONFIG_NO_CONFIG_WRITE */
 537
 538         return s->id;
 539 }
 540
 541
 542 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 543                                                  const u8 *addr)
 544 {
 545         struct wpa_ssid *ssid, *s;
 546         u8 *n;
 547         size_t i;
 548         int found = 0;
 549
 550         ssid = wpa_s->current_ssid;
 551         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 552             !ssid->p2p_persistent_group)
 553                 return;
 554
 555         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 556                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 557                         continue;
 558
 559                 if (s->ssid_len == ssid->ssid_len &&
 560                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 561                         break;
 562         }
 563
 564         if (s == NULL)
 565                 return;
 566
 567         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 568                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 569                               ETH_ALEN) != 0)
 570                         continue;
 571
 572                 if (i == s->num_p2p_clients - 1)
 573                         return; /* already the most recent entry */
 574
 575                 /* move the entry to mark it most recent */
 576                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 577                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 578                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 579                 os_memcpy(s->p2p_client_list +
 580                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 581                 found = 1;
 582                 break;
 583         }
 584
 585         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 586                 n = os_realloc_array(s->p2p_client_list,
 587                                      s->num_p2p_clients + 1, ETH_ALEN);
 588                 if (n == NULL)
 589                         return;
 590                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 591                 s->p2p_client_list = n;
 592                 s->num_p2p_clients++;
 593         } else if (!found) {
 594                 /* Not enough room for an additional entry - drop the oldest
 595                  * entry */
 596                 os_memmove(s->p2p_client_list,
 597                            s->p2p_client_list + ETH_ALEN,
 598                            (s->num_p2p_clients - 1) * ETH_ALEN);
 599                 os_memcpy(s->p2p_client_list +
 600                           (s->num_p2p_clients - 1) * ETH_ALEN,
 601                           addr, ETH_ALEN);
 602         }
 603
 604 #ifndef CONFIG_NO_CONFIG_WRITE
 605         if (wpa_s->parent->conf->update_config &&
 606             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 607                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 608 #endif /* CONFIG_NO_CONFIG_WRITE */
 609 }
 610
 611
 612 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 613                                            int success)
 614 {
 615         struct wpa_ssid *ssid;
 616         const char *ssid_txt;
 617         int client;
 618         int persistent;
 619         u8 go_dev_addr[ETH_ALEN];
 620         int network_id = -1;
 621
 622         /*
 623          * This callback is likely called for the main interface. Update wpa_s
 624          * to use the group interface if a new interface was created for the
 625          * group.
 626          */
 627         if (wpa_s->global->p2p_group_formation)
 628                 wpa_s = wpa_s->global->p2p_group_formation;
 629         wpa_s->global->p2p_group_formation = NULL;
 630         wpa_s->p2p_in_provisioning = 0;
 631
 632         if (!success) {
 633                 wpa_msg(wpa_s->parent, MSG_INFO,
 634                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 635                 wpas_p2p_group_delete(wpa_s,
 636                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 637                 return;
 638         }
 639
 640         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 641
 642         ssid = wpa_s->current_ssid;
 643         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 644                 ssid->mode = WPAS_MODE_P2P_GO;
 645                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 646                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 647         }
 648
 649         persistent = 0;
 650         if (ssid) {
 651                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 652                 client = ssid->mode == WPAS_MODE_INFRA;
 653                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 654                         persistent = ssid->p2p_persistent_group;
 655                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 656                                   ETH_ALEN);
 657                 } else
 658                         persistent = wpas_p2p_persistent_group(wpa_s,
 659                                                                go_dev_addr,
 660                                                                ssid->ssid,
 661                                                                ssid->ssid_len);
 662         } else {
 663                 ssid_txt = "";
 664                 client = wpa_s->p2p_group_interface ==
 665                         P2P_GROUP_INTERFACE_CLIENT;
 666                 os_memset(go_dev_addr, 0, ETH_ALEN);
 667         }
 668
 669         wpa_s->show_group_started = 0;
 670         if (client) {
 671                 /*
 672                  * Indicate event only after successfully completed 4-way
 673                  * handshake, i.e., when the interface is ready for data
 674                  * packets.
 675                  */
 676                 wpa_s->show_group_started = 1;
 677 #ifdef ANDROID_P2P
 678                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 679                  * So we need to restore wpa_s->global->p2p_group_formation */
 680                 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s);
 681                 wpa_s->global->p2p_group_formation = wpa_s;
 682 #endif
 683
 684         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 685                 char psk[65];
 686                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 687                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 688                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 689                         "%s",
 690                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 691                         MAC2STR(go_dev_addr),
 692                         persistent ? " [PERSISTENT]" : "");
 693                 wpas_p2p_cross_connect_setup(wpa_s);
 694                 wpas_p2p_set_group_idle_timeout(wpa_s);
 695         } else {
 696                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 697                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 698                         "go_dev_addr=" MACSTR "%s",
 699                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 700                         ssid && ssid->passphrase ? ssid->passphrase : "",
 701                         MAC2STR(go_dev_addr),
 702                         persistent ? " [PERSISTENT]" : "");
 703                 wpas_p2p_cross_connect_setup(wpa_s);
 704                 wpas_p2p_set_group_idle_timeout(wpa_s);
 705         }
 706
 707         if (persistent)
 708                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 709                                                              ssid, go_dev_addr);
 710         if (network_id < 0 && ssid)
 711                 network_id = ssid->id;
 712         if (!client)
 713                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 714 }
 715
 716
 717 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 718                                            unsigned int freq,
 719                                            const u8 *dst, const u8 *src,
 720                                            const u8 *bssid,
 721                                            const u8 *data, size_t data_len,
 722                                            enum offchannel_send_action_result
 723                                            result)
 724 {
 725         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 726
 727         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 728                 return;
 729         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 730                 return;
 731
 732         switch (result) {
 733         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 734                 res = P2P_SEND_ACTION_SUCCESS;
 735                 break;
 736         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 737                 res = P2P_SEND_ACTION_NO_ACK;
 738                 break;
 739         case OFFCHANNEL_SEND_ACTION_FAILED:
 740                 res = P2P_SEND_ACTION_FAILED;
 741                 break;
 742         }
 743
 744         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 745
 746         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 747             wpa_s->pending_pd_before_join &&
 748             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 749              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 750                 wpa_s->pending_pd_before_join = 0;
 751                 if (wpa_s->p2p_fallback_to_go_neg) {
 752                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 753                                 "during p2p_connect-auto");
 754                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 755                         return;
 756                 }
 757
 758                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 759                            "join-existing-group operation (no ACK for PD "
 760                            "Req)");
 761                 wpas_p2p_join_start(wpa_s);
 762         }
 763 }
 764
 765
 766 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 767                             const u8 *src, const u8 *bssid, const u8 *buf,
 768                             size_t len, unsigned int wait_time)
 769 {
 770         struct wpa_supplicant *wpa_s = ctx;
 771         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 772                                       wait_time,
 773                                       wpas_p2p_send_action_tx_status, 1);
 774 }
 775
 776
 777 static void wpas_send_action_done(void *ctx)
 778 {
 779         struct wpa_supplicant *wpa_s = ctx;
 780         offchannel_send_action_done(wpa_s);
 781 }
 782
 783
 784 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 785                                     struct p2p_go_neg_results *params)
 786 {
 787         if (wpa_s->go_params == NULL) {
 788                 wpa_s->go_params = os_malloc(sizeof(*params));
 789                 if (wpa_s->go_params == NULL)
 790                         return -1;
 791         }
 792         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 793         return 0;
 794 }
 795
 796
 797 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 798                                     struct p2p_go_neg_results *res)
 799 {
 800         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 801                    MAC2STR(res->peer_interface_addr));
 802         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 803                           res->ssid, res->ssid_len);
 804         wpa_supplicant_ap_deinit(wpa_s);
 805         wpas_copy_go_neg_results(wpa_s, res);
 806         if (res->wps_method == WPS_PBC)
 807                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 808         else {
 809                 u16 dev_pw_id = DEV_PW_DEFAULT;
 810                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 811                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 812                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 813                                    wpa_s->p2p_pin, 1, dev_pw_id);
 814         }
 815 }
 816
 817
 818 static void p2p_go_configured(void *ctx, void *data)
 819 {
 820         struct wpa_supplicant *wpa_s = ctx;
 821         struct p2p_go_neg_results *params = data;
 822         struct wpa_ssid *ssid;
 823         int network_id = -1;
 824
 825         ssid = wpa_s->current_ssid;
 826         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 827                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 828                 if (wpa_s->global->p2p_group_formation == wpa_s)
 829                         wpa_s->global->p2p_group_formation = NULL;
 830                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 831                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 832                         "go_dev_addr=" MACSTR "%s",
 833                         wpa_s->ifname,
 834                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 835                         ssid->frequency,
 836                         params->passphrase ? params->passphrase : "",
 837                         MAC2STR(wpa_s->global->p2p_dev_addr),
 838                         params->persistent_group ? " [PERSISTENT]" : "");
 839
 840                 if (params->persistent_group)
 841                         network_id = wpas_p2p_store_persistent_group(
 842                                 wpa_s->parent, ssid,
 843                                 wpa_s->global->p2p_dev_addr);
 844                 if (network_id < 0)
 845                         network_id = ssid->id;
 846                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 847                 wpas_p2p_cross_connect_setup(wpa_s);
 848                 wpas_p2p_set_group_idle_timeout(wpa_s);
 849                 return;
 850         }
 851
 852         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 853         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 854                                               params->peer_interface_addr)) {
 855                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 856                            "filtering");
 857                 return;
 858         }
 859         if (params->wps_method == WPS_PBC)
 860                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 861                                           params->peer_device_addr);
 862         else if (wpa_s->p2p_pin[0])
 863                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 864                                           wpa_s->p2p_pin, NULL, 0);
 865         os_free(wpa_s->go_params);
 866         wpa_s->go_params = NULL;
 867 }
 868
 869
 870 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 871                               struct p2p_go_neg_results *params,
 872                               int group_formation)
 873 {
 874         struct wpa_ssid *ssid;
 875
 876         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 877                 return;
 878
 879         ssid = wpa_config_add_network(wpa_s->conf);
 880         if (ssid == NULL)
 881                 return;
 882
 883         wpa_s->show_group_started = 0;
 884
 885         wpa_config_set_network_defaults(ssid);
 886         ssid->temporary = 1;
 887         ssid->p2p_group = 1;
 888         ssid->p2p_persistent_group = params->persistent_group;
 889         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 890                 WPAS_MODE_P2P_GO;
 891         ssid->frequency = params->freq;
 892         ssid->ht40 = params->ht40;
 893         ssid->ssid = os_zalloc(params->ssid_len + 1);
 894         if (ssid->ssid) {
 895                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 896                 ssid->ssid_len = params->ssid_len;
 897         }
 898         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 899         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 900         ssid->proto = WPA_PROTO_RSN;
 901         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 902         ssid->passphrase = os_strdup(params->passphrase);
 903         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 904
 905         wpa_s->ap_configured_cb = p2p_go_configured;
 906         wpa_s->ap_configured_cb_ctx = wpa_s;
 907         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 908         wpa_s->connect_without_scan = ssid;
 909         wpa_s->reassociate = 1;
 910         wpa_s->disconnected = 0;
 911         wpa_supplicant_req_scan(wpa_s, 0, 0);
 912 }
 913
 914
 915 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 916                                   const struct wpa_supplicant *src)
 917 {
 918         struct wpa_config *d;
 919         const struct wpa_config *s;
 920
 921         d = dst->conf;
 922         s = src->conf;
 923
 924 #define C(n) if (s->n) d->n = os_strdup(s->n)
 925         C(device_name);
 926         C(manufacturer);
 927         C(model_name);
 928         C(model_number);
 929         C(serial_number);
 930         C(config_methods);
 931 #undef C
 932
 933         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 934         os_memcpy(d->sec_device_type, s->sec_device_type,
 935                   sizeof(d->sec_device_type));
 936         d->num_sec_device_types = s->num_sec_device_types;
 937
 938         d->p2p_group_idle = s->p2p_group_idle;
 939         d->p2p_intra_bss = s->p2p_intra_bss;
 940         d->persistent_reconnect = s->persistent_reconnect;
 941         d->max_num_sta = s->max_num_sta;
 942         d->pbc_in_m1 = s->pbc_in_m1;
 943 }
 944
 945
 946 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 947                                         enum wpa_driver_if_type type)
 948 {
 949         char ifname[120], force_ifname[120];
 950
 951         if (wpa_s->pending_interface_name[0]) {
 952                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 953                            "- skip creation of a new one");
 954                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 955                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 956                                    "unknown?! ifname='%s'",
 957                                    wpa_s->pending_interface_name);
 958                         return -1;
 959                 }
 960                 return 0;
 961         }
 962
 963         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 964                     wpa_s->p2p_group_idx);
 965         if (os_strlen(ifname) >= IFNAMSIZ &&
 966             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 967                 /* Try to avoid going over the IFNAMSIZ length limit */
 968                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 969                             wpa_s->p2p_group_idx);
 970         }
 971         force_ifname[0] = '\0';
 972
 973         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 974                    ifname);
 975         wpa_s->p2p_group_idx++;
 976
 977         wpa_s->pending_interface_type = type;
 978         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 979                            wpa_s->pending_interface_addr, NULL) < 0) {
 980                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 981                            "interface");
 982                 return -1;
 983         }
 984
 985         if (force_ifname[0]) {
 986                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 987                            force_ifname);
 988                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 989                            sizeof(wpa_s->pending_interface_name));
 990         } else
 991                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 992                            sizeof(wpa_s->pending_interface_name));
 993         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 994                    MACSTR, wpa_s->pending_interface_name,
 995                    MAC2STR(wpa_s->pending_interface_addr));
 996
 997         return 0;
 998 }
 999
1000
1001 static void wpas_p2p_remove_pending_group_interface(
1002         struct wpa_supplicant *wpa_s)
1003 {
1004         if (!wpa_s->pending_interface_name[0] ||
1005             is_zero_ether_addr(wpa_s->pending_interface_addr))
1006                 return; /* No pending virtual interface */
1007
1008         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1009                    wpa_s->pending_interface_name);
1010         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1011                           wpa_s->pending_interface_name);
1012         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1013         wpa_s->pending_interface_name[0] = '\0';
1014 }
1015
1016
1017 static struct wpa_supplicant *
1018 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1019 {
1020         struct wpa_interface iface;
1021         struct wpa_supplicant *group_wpa_s;
1022
1023         if (!wpa_s->pending_interface_name[0]) {
1024                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1025                 if (!wpas_p2p_create_iface(wpa_s))
1026                         return NULL;
1027                 /*
1028                  * Something has forced us to remove the pending interface; try
1029                  * to create a new one and hope for the best that we will get
1030                  * the same local address.
1031                  */
1032                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1033                                                  WPA_IF_P2P_CLIENT) < 0)
1034                         return NULL;
1035         }
1036
1037         os_memset(&iface, 0, sizeof(iface));
1038         iface.ifname = wpa_s->pending_interface_name;
1039         iface.driver = wpa_s->driver->name;
1040         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1041         iface.driver_param = wpa_s->conf->driver_param;
1042         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1043         if (group_wpa_s == NULL) {
1044                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1045                            "wpa_supplicant interface");
1046                 return NULL;
1047         }
1048         wpa_s->pending_interface_name[0] = '\0';
1049         group_wpa_s->parent = wpa_s;
1050         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1051                 P2P_GROUP_INTERFACE_CLIENT;
1052         wpa_s->global->p2p_group_formation = group_wpa_s;
1053
1054         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1055
1056         return group_wpa_s;
1057 }
1058
1059
1060 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1061                                              void *timeout_ctx)
1062 {
1063         struct wpa_supplicant *wpa_s = eloop_ctx;
1064         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1065         if (wpa_s->global->p2p)
1066                 p2p_group_formation_failed(wpa_s->global->p2p);
1067         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1068                 wpa_drv_p2p_group_formation_failed(wpa_s);
1069         wpas_group_formation_completed(wpa_s, 0);
1070 }
1071
1072
1073 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1074 {
1075         struct wpa_supplicant *wpa_s = ctx;
1076
1077         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1078                 wpa_drv_cancel_remain_on_channel(wpa_s);
1079                 wpa_s->off_channel_freq = 0;
1080                 wpa_s->roc_waiting_drv_freq = 0;
1081         }
1082
1083         if (res->status) {
1084                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1085                         res->status);
1086                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1087                 wpas_p2p_remove_pending_group_interface(wpa_s);
1088                 return;
1089         }
1090
1091         if (wpa_s->p2p_go_ht40)
1092                 res->ht40 = 1;
1093
1094         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1095         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1096
1097         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1098                 struct wpa_ssid *ssid;
1099                 ssid = wpa_config_get_network(wpa_s->conf,
1100                                               wpa_s->p2p_persistent_id);
1101                 if (ssid && ssid->disabled == 2 &&
1102                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1103                         size_t len = os_strlen(ssid->passphrase);
1104                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1105                                    "on requested persistent group");
1106                         os_memcpy(res->passphrase, ssid->passphrase, len);
1107                         res->passphrase[len] = '\0';
1108                 }
1109         }
1110
1111         if (wpa_s->create_p2p_iface) {
1112                 struct wpa_supplicant *group_wpa_s =
1113                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1114                 if (group_wpa_s == NULL) {
1115                         wpas_p2p_remove_pending_group_interface(wpa_s);
1116                         return;
1117                 }
1118                 if (group_wpa_s != wpa_s) {
1119                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1120                                   sizeof(group_wpa_s->p2p_pin));
1121                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1122                 }
1123                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1124                 wpa_s->pending_interface_name[0] = '\0';
1125                 group_wpa_s->p2p_in_provisioning = 1;
1126
1127                 if (res->role_go)
1128                         wpas_start_wps_go(group_wpa_s, res, 1);
1129                 else
1130                         wpas_start_wps_enrollee(group_wpa_s, res);
1131         } else {
1132                 wpa_s->p2p_in_provisioning = 1;
1133                 wpa_s->global->p2p_group_formation = wpa_s;
1134
1135                 if (res->role_go)
1136                         wpas_start_wps_go(wpa_s, res, 1);
1137                 else
1138                         wpas_start_wps_enrollee(ctx, res);
1139         }
1140
1141         wpa_s->p2p_long_listen = 0;
1142         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1143
1144         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1145         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1146                                (res->peer_config_timeout % 100) * 10000,
1147                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1148 }
1149
1150
1151 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1152 {
1153         struct wpa_supplicant *wpa_s = ctx;
1154         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1155                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1156
1157         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1158 }
1159
1160
1161 void wpas_dev_found(void *ctx, const u8 *addr,
1162                     const struct p2p_peer_info *info,
1163                     int new_device)
1164 {
1165 #ifndef CONFIG_NO_STDOUT_DEBUG
1166         struct wpa_supplicant *wpa_s = ctx;
1167         char devtype[WPS_DEV_TYPE_BUFSIZE];
1168 #define WFD_DEV_INFO_SIZE 9
1169         char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
1170         os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
1171 #ifdef CONFIG_WIFI_DISPLAY
1172         if (info->wfd_subelems) {
1173                 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
1174                                         wpabuf_head(info->wfd_subelems),
1175                                         WFD_DEV_INFO_SIZE);
1176         }
1177 #endif /* CONFIG_WIFI_DISPLAY */
1178         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1179                 " p2p_dev_addr=" MACSTR
1180                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1181                 "dev_capab=0x%x group_capab=0x%x%s%s",
1182                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1183                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1184                                      sizeof(devtype)),
1185                 info->device_name, info->config_methods,
1186                 info->dev_capab, info->group_capab,
1187                 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
1188 #endif /* CONFIG_NO_STDOUT_DEBUG */
1189
1190         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1191 }
1192
1193
1194 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1195 {
1196         struct wpa_supplicant *wpa_s = ctx;
1197
1198         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1199                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1200
1201         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1202 }
1203
1204
1205 static int wpas_start_listen(void *ctx, unsigned int freq,
1206                              unsigned int duration,
1207                              const struct wpabuf *probe_resp_ie)
1208 {
1209         struct wpa_supplicant *wpa_s = ctx;
1210
1211         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1212
1213         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1214                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1215                            "report received Probe Request frames");
1216                 return -1;
1217         }
1218
1219         wpa_s->pending_listen_freq = freq;
1220         wpa_s->pending_listen_duration = duration;
1221
1222         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1223                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1224                            "to remain on channel (%u MHz) for Listen "
1225                            "state", freq);
1226                 wpa_s->pending_listen_freq = 0;
1227                 return -1;
1228         }
1229         wpa_s->off_channel_freq = 0;
1230         wpa_s->roc_waiting_drv_freq = freq;
1231
1232         return 0;
1233 }
1234
1235
1236 static void wpas_stop_listen(void *ctx)
1237 {
1238         struct wpa_supplicant *wpa_s = ctx;
1239         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1240                 wpa_drv_cancel_remain_on_channel(wpa_s);
1241                 wpa_s->off_channel_freq = 0;
1242                 wpa_s->roc_waiting_drv_freq = 0;
1243         }
1244         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1245         wpa_drv_probe_req_report(wpa_s, 0);
1246 }
1247
1248
1249 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1250 {
1251         struct wpa_supplicant *wpa_s = ctx;
1252         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1253 }
1254
1255
1256 static struct p2p_srv_bonjour *
1257 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1258                              const struct wpabuf *query)
1259 {
1260         struct p2p_srv_bonjour *bsrv;
1261         size_t len;
1262
1263         len = wpabuf_len(query);
1264         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1265                          struct p2p_srv_bonjour, list) {
1266                 if (len == wpabuf_len(bsrv->query) &&
1267                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1268                               len) == 0)
1269                         return bsrv;
1270         }
1271         return NULL;
1272 }
1273
1274
1275 static struct p2p_srv_upnp *
1276 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1277                           const char *service)
1278 {
1279         struct p2p_srv_upnp *usrv;
1280
1281         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1282                          struct p2p_srv_upnp, list) {
1283                 if (version == usrv->version &&
1284                     os_strcmp(service, usrv->service) == 0)
1285                         return usrv;
1286         }
1287         return NULL;
1288 }
1289
1290
1291 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1292                                         u8 srv_trans_id)
1293 {
1294         u8 *len_pos;
1295
1296         if (wpabuf_tailroom(resp) < 5)
1297                 return;
1298
1299         /* Length (to be filled) */
1300         len_pos = wpabuf_put(resp, 2);
1301         wpabuf_put_u8(resp, srv_proto);
1302         wpabuf_put_u8(resp, srv_trans_id);
1303         /* Status Code */
1304         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1305         /* Response Data: empty */
1306         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1307 }
1308
1309
1310 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1311                                 struct wpabuf *resp, u8 srv_trans_id)
1312 {
1313         struct p2p_srv_bonjour *bsrv;
1314         u8 *len_pos;
1315
1316         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1317
1318         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1319                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1320                 return;
1321         }
1322
1323         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1324                          struct p2p_srv_bonjour, list) {
1325                 if (wpabuf_tailroom(resp) <
1326                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1327                         return;
1328                 /* Length (to be filled) */
1329                 len_pos = wpabuf_put(resp, 2);
1330                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1331                 wpabuf_put_u8(resp, srv_trans_id);
1332                 /* Status Code */
1333                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1334                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1335                                   wpabuf_head(bsrv->resp),
1336                                   wpabuf_len(bsrv->resp));
1337                 /* Response Data */
1338                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1339                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1340                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1341                              2);
1342         }
1343 }
1344
1345
1346 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1347                                 struct wpabuf *resp, u8 srv_trans_id,
1348                                 const u8 *query, size_t query_len)
1349 {
1350         struct p2p_srv_bonjour *bsrv;
1351         struct wpabuf buf;
1352         u8 *len_pos;
1353
1354         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1355                           query, query_len);
1356         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1357                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1358                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1359                                             srv_trans_id);
1360                 return;
1361         }
1362
1363         if (query_len == 0) {
1364                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1365                 return;
1366         }
1367
1368         if (wpabuf_tailroom(resp) < 5)
1369                 return;
1370         /* Length (to be filled) */
1371         len_pos = wpabuf_put(resp, 2);
1372         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1373         wpabuf_put_u8(resp, srv_trans_id);
1374
1375         wpabuf_set(&buf, query, query_len);
1376         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1377         if (bsrv == NULL) {
1378                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1379                            "available");
1380
1381                 /* Status Code */
1382                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1383                 /* Response Data: empty */
1384                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1385                              2);
1386                 return;
1387         }
1388
1389         /* Status Code */
1390         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1391         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1392                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1393
1394         if (wpabuf_tailroom(resp) >=
1395             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1396                 /* Response Data */
1397                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1398                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1399         }
1400         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1401 }
1402
1403
1404 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1405                              struct wpabuf *resp, u8 srv_trans_id)
1406 {
1407         struct p2p_srv_upnp *usrv;
1408         u8 *len_pos;
1409
1410         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1411
1412         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1413                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1414                 return;
1415         }
1416
1417         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1418                          struct p2p_srv_upnp, list) {
1419                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1420                         return;
1421
1422                 /* Length (to be filled) */
1423                 len_pos = wpabuf_put(resp, 2);
1424                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1425                 wpabuf_put_u8(resp, srv_trans_id);
1426
1427                 /* Status Code */
1428                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1429                 /* Response Data */
1430                 wpabuf_put_u8(resp, usrv->version);
1431                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1432                            usrv->service);
1433                 wpabuf_put_str(resp, usrv->service);
1434                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1435                              2);
1436         }
1437 }
1438
1439
1440 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1441                              struct wpabuf *resp, u8 srv_trans_id,
1442                              const u8 *query, size_t query_len)
1443 {
1444         struct p2p_srv_upnp *usrv;
1445         u8 *len_pos;
1446         u8 version;
1447         char *str;
1448         int count = 0;
1449
1450         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1451                           query, query_len);
1452
1453         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1454                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1455                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1456                                             srv_trans_id);
1457                 return;
1458         }
1459
1460         if (query_len == 0) {
1461                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1462                 return;
1463         }
1464
1465         if (wpabuf_tailroom(resp) < 5)
1466                 return;
1467
1468         /* Length (to be filled) */
1469         len_pos = wpabuf_put(resp, 2);
1470         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1471         wpabuf_put_u8(resp, srv_trans_id);
1472
1473         version = query[0];
1474         str = os_malloc(query_len);
1475         if (str == NULL)
1476                 return;
1477         os_memcpy(str, query + 1, query_len - 1);
1478         str[query_len - 1] = '\0';
1479
1480         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1481                          struct p2p_srv_upnp, list) {
1482                 if (version != usrv->version)
1483                         continue;
1484
1485                 if (os_strcmp(str, "ssdp:all") != 0 &&
1486                     os_strstr(usrv->service, str) == NULL)
1487                         continue;
1488
1489                 if (wpabuf_tailroom(resp) < 2)
1490                         break;
1491                 if (count == 0) {
1492                         /* Status Code */
1493                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1494                         /* Response Data */
1495                         wpabuf_put_u8(resp, version);
1496                 } else
1497                         wpabuf_put_u8(resp, ',');
1498
1499                 count++;
1500
1501                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1502                            usrv->service);
1503                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1504                         break;
1505                 wpabuf_put_str(resp, usrv->service);
1506         }
1507         os_free(str);
1508
1509         if (count == 0) {
1510                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1511                            "available");
1512                 /* Status Code */
1513                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1514                 /* Response Data: empty */
1515         }
1516
1517         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1518 }
1519
1520
1521 #ifdef CONFIG_WIFI_DISPLAY
1522 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1523                             struct wpabuf *resp, u8 srv_trans_id,
1524                             const u8 *query, size_t query_len)
1525 {
1526         const u8 *pos;
1527         u8 role;
1528         u8 *len_pos;
1529
1530         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1531
1532         if (!wpa_s->global->wifi_display) {
1533                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1534                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1535                                             srv_trans_id);
1536                 return;
1537         }
1538
1539         if (query_len < 1) {
1540                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1541                            "Role");
1542                 return;
1543         }
1544
1545         if (wpabuf_tailroom(resp) < 5)
1546                 return;
1547
1548         pos = query;
1549         role = *pos++;
1550         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1551
1552         /* TODO: role specific handling */
1553
1554         /* Length (to be filled) */
1555         len_pos = wpabuf_put(resp, 2);
1556         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1557         wpabuf_put_u8(resp, srv_trans_id);
1558         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1559
1560         while (pos < query + query_len) {
1561                 if (*pos < MAX_WFD_SUBELEMS &&
1562                     wpa_s->global->wfd_subelem[*pos] &&
1563                     wpabuf_tailroom(resp) >=
1564                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1565                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1566                                    "subelement %u", *pos);
1567                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1568                 }
1569                 pos++;
1570         }
1571
1572         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1573 }
1574 #endif /* CONFIG_WIFI_DISPLAY */
1575
1576
1577 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1578                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1579 {
1580         struct wpa_supplicant *wpa_s = ctx;
1581         const u8 *pos = tlvs;
1582         const u8 *end = tlvs + tlvs_len;
1583         const u8 *tlv_end;
1584         u16 slen;
1585         struct wpabuf *resp;
1586         u8 srv_proto, srv_trans_id;
1587         size_t buf_len;
1588         char *buf;
1589
1590         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1591                     tlvs, tlvs_len);
1592         buf_len = 2 * tlvs_len + 1;
1593         buf = os_malloc(buf_len);
1594         if (buf) {
1595                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1596                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1597                              MACSTR " %u %u %s",
1598                              freq, MAC2STR(sa), dialog_token, update_indic,
1599                              buf);
1600                 os_free(buf);
1601         }
1602
1603         if (wpa_s->p2p_sd_over_ctrl_iface) {
1604                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1605                                            update_indic, tlvs, tlvs_len);
1606                 return; /* to be processed by an external program */
1607         }
1608
1609         resp = wpabuf_alloc(10000);
1610         if (resp == NULL)
1611                 return;
1612
1613         while (pos + 1 < end) {
1614                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1615                 slen = WPA_GET_LE16(pos);
1616                 pos += 2;
1617                 if (pos + slen > end || slen < 2) {
1618                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1619                                    "length");
1620                         wpabuf_free(resp);
1621                         return;
1622                 }
1623                 tlv_end = pos + slen;
1624
1625                 srv_proto = *pos++;
1626                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1627                            srv_proto);
1628                 srv_trans_id = *pos++;
1629                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1630                            srv_trans_id);
1631
1632                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1633                             pos, tlv_end - pos);
1634
1635
1636                 if (wpa_s->force_long_sd) {
1637                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1638                                    "response");
1639                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1640                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1641                         goto done;
1642                 }
1643
1644                 switch (srv_proto) {
1645                 case P2P_SERV_ALL_SERVICES:
1646                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1647                                    "for all services");
1648                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1649                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1650                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1651                                            "discovery protocols available");
1652                                 wpas_sd_add_proto_not_avail(
1653                                         resp, P2P_SERV_ALL_SERVICES,
1654                                         srv_trans_id);
1655                                 break;
1656                         }
1657                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1658                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1659                         break;
1660                 case P2P_SERV_BONJOUR:
1661                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1662                                             pos, tlv_end - pos);
1663                         break;
1664                 case P2P_SERV_UPNP:
1665                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1666                                          pos, tlv_end - pos);
1667                         break;
1668 #ifdef CONFIG_WIFI_DISPLAY
1669                 case P2P_SERV_WIFI_DISPLAY:
1670                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1671                                         pos, tlv_end - pos);
1672                         break;
1673 #endif /* CONFIG_WIFI_DISPLAY */
1674                 default:
1675                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1676                                    "protocol %u", srv_proto);
1677                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1678                                                     srv_trans_id);
1679                         break;
1680                 }
1681
1682                 pos = tlv_end;
1683         }
1684
1685 done:
1686         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1687                                    update_indic, tlvs, tlvs_len);
1688
1689         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1690
1691         wpabuf_free(resp);
1692 }
1693
1694
1695 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1696                       const u8 *tlvs, size_t tlvs_len)
1697 {
1698         struct wpa_supplicant *wpa_s = ctx;
1699         const u8 *pos = tlvs;
1700         const u8 *end = tlvs + tlvs_len;
1701         const u8 *tlv_end;
1702         u16 slen;
1703         size_t buf_len;
1704         char *buf;
1705
1706         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1707                     tlvs, tlvs_len);
1708         if (tlvs_len > 1500) {
1709                 /* TODO: better way for handling this */
1710                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1711                              P2P_EVENT_SERV_DISC_RESP MACSTR
1712                              " %u <long response: %u bytes>",
1713                              MAC2STR(sa), update_indic,
1714                              (unsigned int) tlvs_len);
1715         } else {
1716                 buf_len = 2 * tlvs_len + 1;
1717                 buf = os_malloc(buf_len);
1718                 if (buf) {
1719                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1720                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1721                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1722                                      MAC2STR(sa), update_indic, buf);
1723                         os_free(buf);
1724                 }
1725         }
1726
1727         while (pos < end) {
1728                 u8 srv_proto, srv_trans_id, status;
1729
1730                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1731                 slen = WPA_GET_LE16(pos);
1732                 pos += 2;
1733                 if (pos + slen > end || slen < 3) {
1734                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1735                                    "length");
1736                         return;
1737                 }
1738                 tlv_end = pos + slen;
1739
1740                 srv_proto = *pos++;
1741                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1742                            srv_proto);
1743                 srv_trans_id = *pos++;
1744                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1745                            srv_trans_id);
1746                 status = *pos++;
1747                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1748                            status);
1749
1750                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1751                             pos, tlv_end - pos);
1752
1753                 pos = tlv_end;
1754         }
1755
1756         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1757 }
1758
1759
1760 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1761                         const struct wpabuf *tlvs)
1762 {
1763         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1764                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1765         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1766                 return 0;
1767         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1768 }
1769
1770
1771 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1772                              u8 version, const char *query)
1773 {
1774         struct wpabuf *tlvs;
1775         u64 ret;
1776
1777         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1778         if (tlvs == NULL)
1779                 return 0;
1780         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1781         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1782         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1783         wpabuf_put_u8(tlvs, version);
1784         wpabuf_put_str(tlvs, query);
1785         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1786         wpabuf_free(tlvs);
1787         return ret;
1788 }
1789
1790
1791 #ifdef CONFIG_WIFI_DISPLAY
1792
1793 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1794                                    const struct wpabuf *tlvs)
1795 {
1796         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1797                 return 0;
1798         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1799                 return 0;
1800         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1801 }
1802
1803
1804 #define MAX_WFD_SD_SUBELEMS 20
1805
1806 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1807                                 const char *subelems)
1808 {
1809         u8 *len;
1810         const char *pos;
1811         int val;
1812         int count = 0;
1813
1814         len = wpabuf_put(tlvs, 2);
1815         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1816         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1817
1818         wpabuf_put_u8(tlvs, role);
1819
1820         pos = subelems;
1821         while (*pos) {
1822                 val = atoi(pos);
1823                 if (val >= 0 && val < 256) {
1824                         wpabuf_put_u8(tlvs, val);
1825                         count++;
1826                         if (count == MAX_WFD_SD_SUBELEMS)
1827                                 break;
1828                 }
1829                 pos = os_strchr(pos + 1, ',');
1830                 if (pos == NULL)
1831                         break;
1832                 pos++;
1833         }
1834
1835         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1836 }
1837
1838
1839 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1840                                      const u8 *dst, const char *role)
1841 {
1842         struct wpabuf *tlvs;
1843         u64 ret;
1844         const char *subelems;
1845         u8 id = 1;
1846
1847         subelems = os_strchr(role, ' ');
1848         if (subelems == NULL)
1849                 return 0;
1850         subelems++;
1851
1852         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1853         if (tlvs == NULL)
1854                 return 0;
1855
1856         if (os_strstr(role, "[source]"))
1857                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1858         if (os_strstr(role, "[pri-sink]"))
1859                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1860         if (os_strstr(role, "[sec-sink]"))
1861                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1862         if (os_strstr(role, "[source+sink]"))
1863                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1864
1865         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1866         wpabuf_free(tlvs);
1867         return ret;
1868 }
1869
1870 #endif /* CONFIG_WIFI_DISPLAY */
1871
1872
1873 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1874 {
1875         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1876                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1877         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1878                 return -1;
1879         return p2p_sd_cancel_request(wpa_s->global->p2p,
1880                                      (void *) (uintptr_t) req);
1881 }
1882
1883
1884 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1885                           const u8 *dst, u8 dialog_token,
1886                           const struct wpabuf *resp_tlvs)
1887 {
1888         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1889                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1890                                         resp_tlvs);
1891                 return;
1892         }
1893         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1894                 return;
1895         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1896                         resp_tlvs);
1897 }
1898
1899 #ifdef ANDROID_P2P
1900 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1901 #else
1902 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1903 #endif
1904 {
1905         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1906                 wpa_drv_p2p_service_update(wpa_s);
1907                 return;
1908         }
1909         if (wpa_s->global->p2p)
1910 #ifdef ANDROID_P2P
1911                 p2p_sd_service_update(wpa_s->global->p2p, action);
1912 #else
1913                 p2p_sd_service_update(wpa_s->global->p2p);
1914 #endif
1915 }
1916
1917
1918 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1919 {
1920         dl_list_del(&bsrv->list);
1921         wpabuf_free(bsrv->query);
1922         wpabuf_free(bsrv->resp);
1923         os_free(bsrv);
1924 }
1925
1926
1927 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1928 {
1929         dl_list_del(&usrv->list);
1930         os_free(usrv->service);
1931         os_free(usrv);
1932 }
1933
1934
1935 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1936 {
1937         struct p2p_srv_bonjour *bsrv, *bn;
1938         struct p2p_srv_upnp *usrv, *un;
1939
1940         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1941                               struct p2p_srv_bonjour, list)
1942                 wpas_p2p_srv_bonjour_free(bsrv);
1943
1944         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1945                               struct p2p_srv_upnp, list)
1946                 wpas_p2p_srv_upnp_free(usrv);
1947
1948 #ifdef ANDROID_P2P
1949         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1950 #else
1951         wpas_p2p_sd_service_update(wpa_s);
1952 #endif
1953 }
1954
1955
1956 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1957                                  struct wpabuf *query, struct wpabuf *resp)
1958 {
1959         struct p2p_srv_bonjour *bsrv;
1960
1961         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1962         if (bsrv) {
1963                 wpabuf_free(query);
1964                 wpabuf_free(bsrv->resp);
1965                 bsrv->resp = resp;
1966                 return 0;
1967         }
1968
1969         bsrv = os_zalloc(sizeof(*bsrv));
1970         if (bsrv == NULL)
1971                 return -1;
1972         bsrv->query = query;
1973         bsrv->resp = resp;
1974         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1975
1976 #ifdef ANDROID_P2P
1977         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
1978 #else
1979         wpas_p2p_sd_service_update(wpa_s);
1980 #endif
1981         return 0;
1982 }
1983
1984
1985 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1986                                  const struct wpabuf *query)
1987 {
1988         struct p2p_srv_bonjour *bsrv;
1989
1990         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1991         if (bsrv == NULL)
1992                 return -1;
1993         wpas_p2p_srv_bonjour_free(bsrv);
1994 #ifdef ANDROID_P2P
1995         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
1996 #else
1997         wpas_p2p_sd_service_update(wpa_s);
1998 #endif
1999         return 0;
2000 }
2001
2002
2003 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2004                               const char *service)
2005 {
2006         struct p2p_srv_upnp *usrv;
2007
2008         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2009                 return 0; /* Already listed */
2010         usrv = os_zalloc(sizeof(*usrv));
2011         if (usrv == NULL)
2012                 return -1;
2013         usrv->version = version;
2014         usrv->service = os_strdup(service);
2015         if (usrv->service == NULL) {
2016                 os_free(usrv);
2017                 return -1;
2018         }
2019         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2020
2021 #ifdef ANDROID_P2P
2022         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2023 #else
2024         wpas_p2p_sd_service_update(wpa_s);
2025 #endif
2026         return 0;
2027 }
2028
2029
2030 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2031                               const char *service)
2032 {
2033         struct p2p_srv_upnp *usrv;
2034
2035         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2036         if (usrv == NULL)
2037                 return -1;
2038         wpas_p2p_srv_upnp_free(usrv);
2039 #ifdef ANDROID_P2P
2040         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2041 #else
2042         wpas_p2p_sd_service_update(wpa_s);
2043 #endif
2044         return 0;
2045 }
2046
2047
2048 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2049                                          const u8 *peer, const char *params,
2050                                          unsigned int generated_pin)
2051 {
2052         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2053                 MAC2STR(peer), generated_pin, params);
2054 }
2055
2056
2057 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2058                                         const u8 *peer, const char *params)
2059 {
2060         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2061                 MAC2STR(peer), params);
2062 }
2063
2064
2065 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2066                         const u8 *dev_addr, const u8 *pri_dev_type,
2067                         const char *dev_name, u16 supp_config_methods,
2068                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2069                         size_t group_id_len)
2070 {
2071         struct wpa_supplicant *wpa_s = ctx;
2072         char devtype[WPS_DEV_TYPE_BUFSIZE];
2073         char params[300];
2074         u8 empty_dev_type[8];
2075         unsigned int generated_pin = 0;
2076         struct wpa_supplicant *group = NULL;
2077
2078         if (group_id) {
2079                 for (group = wpa_s->global->ifaces; group; group = group->next)
2080                 {
2081                         struct wpa_ssid *s = group->current_ssid;
2082                         if (s != NULL &&
2083                             s->mode == WPAS_MODE_P2P_GO &&
2084                             group_id_len - ETH_ALEN == s->ssid_len &&
2085                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2086                                       s->ssid_len) == 0)
2087                                 break;
2088                 }
2089         }
2090
2091         if (pri_dev_type == NULL) {
2092                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2093                 pri_dev_type = empty_dev_type;
2094         }
2095         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2096                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2097                     "dev_capab=0x%x group_capab=0x%x%s%s",
2098                     MAC2STR(dev_addr),
2099                     wps_dev_type_bin2str(pri_dev_type, devtype,
2100                                          sizeof(devtype)),
2101                     dev_name, supp_config_methods, dev_capab, group_capab,
2102                     group ? " group=" : "",
2103                     group ? group->ifname : "");
2104         params[sizeof(params) - 1] = '\0';
2105
2106         if (config_methods & WPS_CONFIG_DISPLAY) {
2107                 generated_pin = wps_generate_pin();
2108                 wpas_prov_disc_local_display(wpa_s, peer, params,
2109                                              generated_pin);
2110         } else if (config_methods & WPS_CONFIG_KEYPAD)
2111                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2112         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2113                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2114                         "%s", MAC2STR(peer), params);
2115
2116         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2117                                             P2P_PROV_DISC_SUCCESS,
2118                                             config_methods, generated_pin);
2119 }
2120
2121
2122 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2123 {
2124         struct wpa_supplicant *wpa_s = ctx;
2125         unsigned int generated_pin = 0;
2126         char params[20];
2127
2128         if (wpa_s->pending_pd_before_join &&
2129             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2130              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2131                 wpa_s->pending_pd_before_join = 0;
2132                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2133                            "join-existing-group operation");
2134                 wpas_p2p_join_start(wpa_s);
2135                 return;
2136         }
2137
2138         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2139             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2140                 os_snprintf(params, sizeof(params), " peer_go=%d",
2141                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2142         else
2143                 params[0] = '\0';
2144
2145         if (config_methods & WPS_CONFIG_DISPLAY)
2146                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2147         else if (config_methods & WPS_CONFIG_KEYPAD) {
2148                 generated_pin = wps_generate_pin();
2149                 wpas_prov_disc_local_display(wpa_s, peer, params,
2150                                              generated_pin);
2151         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2152                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2153                         "%s", MAC2STR(peer), params);
2154
2155         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2156                                             P2P_PROV_DISC_SUCCESS,
2157                                             config_methods, generated_pin);
2158 }
2159
2160
2161 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2162                                 enum p2p_prov_disc_status status)
2163 {
2164         struct wpa_supplicant *wpa_s = ctx;
2165
2166         if (wpa_s->p2p_fallback_to_go_neg) {
2167                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2168                         "failed - fall back to GO Negotiation");
2169                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2170                 return;
2171         }
2172
2173 #ifdef ANDROID_P2P
2174         /* If provision discovery failed it is safe to cancel the timer here and
2175          * also do not start the join */
2176         if (wpa_s->pending_pd_before_join &&
2177             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2178              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2179                 wpa_s->pending_pd_before_join = 0;
2180                 wpa_printf(MSG_DEBUG, "P2P: Do not Start pending "
2181                            "join-existing-group operation");
2182                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2183         }
2184 #endif /* ANDROID_P2P */
2185         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2186                 " p2p_dev_addr=" MACSTR " status=%d",
2187                 MAC2STR(peer), status);
2188
2189         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2190                                             status, 0, 0);
2191 }
2192
2193
2194 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2195                                   const u8 *go_dev_addr, const u8 *ssid,
2196                                   size_t ssid_len, int *go, u8 *group_bssid,
2197                                   int *force_freq, int persistent_group)
2198 {
2199         struct wpa_supplicant *wpa_s = ctx;
2200         struct wpa_ssid *s;
2201         u8 cur_bssid[ETH_ALEN];
2202         int res;
2203         struct wpa_supplicant *grp;
2204
2205         if (!persistent_group) {
2206                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2207                            " to join an active group", MAC2STR(sa));
2208                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2209                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2210                      == 0 ||
2211                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2212                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2213                                    "authorized invitation");
2214                         goto accept_inv;
2215                 }
2216                 /*
2217                  * Do not accept the invitation automatically; notify user and
2218                  * request approval.
2219                  */
2220                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2221         }
2222
2223         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2224         if (grp) {
2225                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2226                            "running persistent group");
2227                 if (*go)
2228                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2229                 goto accept_inv;
2230         }
2231
2232         if (!wpa_s->conf->persistent_reconnect)
2233                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2234
2235         for (s = wpa_s->conf->ssid; s; s = s->next) {
2236                 if (s->disabled == 2 &&
2237                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2238                     s->ssid_len == ssid_len &&
2239                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2240                         break;
2241         }
2242
2243         if (!s) {
2244                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2245                            " requested reinvocation of an unknown group",
2246                            MAC2STR(sa));
2247                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2248         }
2249
2250         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2251                 *go = 1;
2252                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2253                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2254                                    "interface is already in use - reject "
2255                                    "invitation");
2256                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2257                 }
2258                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2259         } else if (s->mode == WPAS_MODE_P2P_GO) {
2260                 *go = 1;
2261                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2262                 {
2263                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2264                                    "interface address for the group");
2265                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2266                 }
2267                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2268                           ETH_ALEN);
2269         }
2270
2271 accept_inv:
2272         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2273             wpa_s->assoc_freq) {
2274                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2275                            "the channel we are already using");
2276                 *force_freq = wpa_s->assoc_freq;
2277         }
2278
2279         res = wpa_drv_shared_freq(wpa_s);
2280         if (res > 0) {
2281                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2282                            "with the channel we are already using on a "
2283                            "shared interface");
2284                 *force_freq = res;
2285         }
2286
2287         return P2P_SC_SUCCESS;
2288 }
2289
2290
2291 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2292                                      const u8 *ssid, size_t ssid_len,
2293                                      const u8 *go_dev_addr, u8 status,
2294                                      int op_freq)
2295 {
2296         struct wpa_supplicant *wpa_s = ctx;
2297         struct wpa_ssid *s;
2298
2299         for (s = wpa_s->conf->ssid; s; s = s->next) {
2300                 if (s->disabled == 2 &&
2301                     s->ssid_len == ssid_len &&
2302                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2303                         break;
2304         }
2305
2306         if (status == P2P_SC_SUCCESS) {
2307                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2308                            " was accepted; op_freq=%d MHz",
2309                            MAC2STR(sa), op_freq);
2310                 if (s) {
2311                         wpas_p2p_group_add_persistent(
2312                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
2313                 } else if (bssid) {
2314                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2315                                       wpa_s->p2p_wps_method, 0);
2316                 }
2317                 return;
2318         }
2319
2320         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2321                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2322                            " was rejected (status %u)", MAC2STR(sa), status);
2323                 return;
2324         }
2325
2326         if (!s) {
2327                 if (bssid) {
2328                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2329                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2330                                 " bssid=" MACSTR " unknown-network",
2331                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2332                                 MAC2STR(bssid));
2333                 } else {
2334                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2335                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2336                                 " unknown-network",
2337                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2338                 }
2339                 return;
2340         }
2341
2342         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2343                 " persistent=%d", MAC2STR(sa), s->id);
2344 }
2345
2346
2347 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2348 {
2349         struct wpa_supplicant *wpa_s = ctx;
2350         struct wpa_ssid *ssid;
2351
2352         if (bssid) {
2353                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2354                         "status=%d " MACSTR,
2355                         status, MAC2STR(bssid));
2356         } else {
2357                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2358                         "status=%d ", status);
2359         }
2360         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2361
2362         if (wpa_s->pending_invite_ssid_id == -1)
2363                 return; /* Invitation to active group */
2364
2365         if (status != P2P_SC_SUCCESS) {
2366                 wpas_p2p_remove_pending_group_interface(wpa_s);
2367                 return;
2368         }
2369
2370         ssid = wpa_config_get_network(wpa_s->conf,
2371                                       wpa_s->pending_invite_ssid_id);
2372         if (ssid == NULL) {
2373                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2374                            "data matching with invitation");
2375                 return;
2376         }
2377
2378         wpas_p2p_group_add_persistent(wpa_s, ssid,
2379                                       ssid->mode == WPAS_MODE_P2P_GO,
2380                                       wpa_s->p2p_persistent_go_freq,
2381                                       wpa_s->p2p_go_ht40);
2382 }
2383
2384
2385 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2386                                     unsigned int freq)
2387 {
2388         unsigned int i;
2389
2390         if (global->p2p_disallow_freq == NULL)
2391                 return 0;
2392
2393         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2394                 if (freq >= global->p2p_disallow_freq[i].min &&
2395                     freq <= global->p2p_disallow_freq[i].max)
2396                         return 1;
2397         }
2398
2399         return 0;
2400 }
2401
2402
2403 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2404 {
2405         reg->channel[reg->channels] = chan;
2406         reg->channels++;
2407 }
2408
2409
2410 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2411                                      struct p2p_channels *chan)
2412 {
2413         int i, cla = 0;
2414
2415         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2416                    "band");
2417
2418         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2419         chan->reg_class[cla].reg_class = 81;
2420         chan->reg_class[cla].channels = 0;
2421         for (i = 0; i < 11; i++) {
2422                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2423                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2424         }
2425         if (chan->reg_class[cla].channels)
2426                 cla++;
2427
2428         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2429                    "band");
2430
2431         /* Operating class 115 - 5 GHz, channels 36-48 */
2432         chan->reg_class[cla].reg_class = 115;
2433         chan->reg_class[cla].channels = 0;
2434         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2435                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2436         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2437                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2438         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2439                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2440         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2441                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2442         if (chan->reg_class[cla].channels)
2443                 cla++;
2444
2445         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2446                    "band");
2447
2448         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2449         chan->reg_class[cla].reg_class = 124;
2450         chan->reg_class[cla].channels = 0;
2451         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2452                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2453         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2454                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2455         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2456                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2457         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2458                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2459         if (chan->reg_class[cla].channels)
2460                 cla++;
2461
2462         chan->reg_classes = cla;
2463         return 0;
2464 }
2465
2466
2467 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2468                                           u16 num_modes,
2469                                           enum hostapd_hw_mode mode)
2470 {
2471         u16 i;
2472
2473         for (i = 0; i < num_modes; i++) {
2474                 if (modes[i].mode == mode)
2475                         return &modes[i];
2476         }
2477
2478         return NULL;
2479 }
2480
2481
2482 static int has_channel(struct wpa_global *global,
2483                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2484 {
2485         int i;
2486         unsigned int freq;
2487
2488         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2489                 chan * 5;
2490         if (wpas_p2p_disallowed_freq(global, freq))
2491                 return 0;
2492
2493         for (i = 0; i < mode->num_channels; i++) {
2494                 if (mode->channels[i].chan == chan) {
2495                         if (flags)
2496                                 *flags = mode->channels[i].flag;
2497                         return !(mode->channels[i].flag &
2498                                  (HOSTAPD_CHAN_DISABLED |
2499                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2500                                   HOSTAPD_CHAN_NO_IBSS |
2501                                   HOSTAPD_CHAN_RADAR));
2502                 }
2503         }
2504
2505         return 0;
2506 }
2507
2508
2509 struct p2p_oper_class_map {
2510         enum hostapd_hw_mode mode;
2511         u8 op_class;
2512         u8 min_chan;
2513         u8 max_chan;
2514         u8 inc;
2515         enum { BW20, BW40PLUS, BW40MINUS } bw;
2516 };
2517
2518 static struct p2p_oper_class_map op_class[] = {
2519         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2520         { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2521 #if 0 /* Do not enable HT40 on 2 GHz for now */
2522         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2523         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2524 #endif
2525         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2526         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2527         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2528         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2529         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2530         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2531         { -1, 0, 0, 0, 0, BW20 }
2532 };
2533
2534
2535 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2536                                    struct hostapd_hw_modes *mode,
2537                                    u8 channel, u8 bw)
2538 {
2539         int flag;
2540
2541         if (!has_channel(wpa_s->global, mode, channel, &flag))
2542                 return -1;
2543         if (bw == BW40MINUS &&
2544             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2545              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2546                 return 0;
2547         if (bw == BW40PLUS &&
2548             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2549              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2550                 return 0;
2551         return 1;
2552 }
2553
2554
2555 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2556                                    struct p2p_channels *chan)
2557 {
2558         struct hostapd_hw_modes *mode;
2559         int cla, op;
2560
2561         if (wpa_s->hw.modes == NULL) {
2562                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2563                            "of all supported channels; assume dualband "
2564                            "support");
2565                 return wpas_p2p_default_channels(wpa_s, chan);
2566         }
2567
2568         cla = 0;
2569
2570         for (op = 0; op_class[op].op_class; op++) {
2571                 struct p2p_oper_class_map *o = &op_class[op];
2572                 u8 ch;
2573                 struct p2p_reg_class *reg = NULL;
2574
2575                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2576                 if (mode == NULL)
2577                         continue;
2578                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2579                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2580                                 continue;
2581                         if (reg == NULL) {
2582                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2583                                            "class %u", o->op_class);
2584                                 reg = &chan->reg_class[cla];
2585                                 cla++;
2586                                 reg->reg_class = o->op_class;
2587                         }
2588                         reg->channel[reg->channels] = ch;
2589                         reg->channels++;
2590                 }
2591                 if (reg) {
2592                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2593                                     reg->channel, reg->channels);
2594                 }
2595         }
2596
2597         chan->reg_classes = cla;
2598
2599         return 0;
2600 }
2601
2602
2603 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2604                            struct hostapd_hw_modes *mode, u8 channel)
2605 {
2606         int op, ret;
2607
2608         for (op = 0; op_class[op].op_class; op++) {
2609                 struct p2p_oper_class_map *o = &op_class[op];
2610                 u8 ch;
2611
2612                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2613                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2614                             o->bw == BW20 || ch != channel)
2615                                 continue;
2616                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2617                         if (ret < 0)
2618                                 continue;
2619                         else if (ret > 0)
2620                                 return (o->bw == BW40MINUS) ? -1 : 1;
2621                         else
2622                                 return 0;
2623                 }
2624         }
2625         return 0;
2626 }
2627
2628
2629 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2630                         size_t buf_len)
2631 {
2632         struct wpa_supplicant *wpa_s = ctx;
2633
2634         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2635                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2636                         break;
2637         }
2638         if (wpa_s == NULL)
2639                 return -1;
2640
2641         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2642 }
2643
2644
2645 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2646 {
2647         struct wpa_supplicant *wpa_s = ctx;
2648
2649         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2650                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2651                 if (ssid == NULL)
2652                         continue;
2653                 if (ssid->mode != WPAS_MODE_INFRA)
2654                         continue;
2655                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2656                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2657                         continue;
2658                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2659                         return 1;
2660         }
2661
2662         return 0;
2663 }
2664
2665
2666 /**
2667  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2668  * @global: Pointer to global data from wpa_supplicant_init()
2669  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2670  * Returns: 0 on success, -1 on failure
2671  */
2672 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2673 {
2674         struct p2p_config p2p;
2675         unsigned int r;
2676         int i;
2677
2678         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2679                 return 0;
2680
2681         if (global->p2p)
2682                 return 0;
2683
2684         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2685                 struct p2p_params params;
2686
2687                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2688                 os_memset(&params, 0, sizeof(params));
2689                 params.dev_name = wpa_s->conf->device_name;
2690                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2691                           WPS_DEV_TYPE_LEN);
2692                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2693                 os_memcpy(params.sec_dev_type,
2694                           wpa_s->conf->sec_device_type,
2695                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2696
2697                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2698                         return -1;
2699
2700                 return 0;
2701         }
2702
2703         os_memset(&p2p, 0, sizeof(p2p));
2704         p2p.msg_ctx = wpa_s;
2705         p2p.cb_ctx = wpa_s;
2706         p2p.p2p_scan = wpas_p2p_scan;
2707         p2p.send_action = wpas_send_action;
2708         p2p.send_action_done = wpas_send_action_done;
2709         p2p.go_neg_completed = wpas_go_neg_completed;
2710         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2711         p2p.dev_found = wpas_dev_found;
2712         p2p.dev_lost = wpas_dev_lost;
2713         p2p.start_listen = wpas_start_listen;
2714         p2p.stop_listen = wpas_stop_listen;
2715         p2p.send_probe_resp = wpas_send_probe_resp;
2716         p2p.sd_request = wpas_sd_request;
2717         p2p.sd_response = wpas_sd_response;
2718         p2p.prov_disc_req = wpas_prov_disc_req;
2719         p2p.prov_disc_resp = wpas_prov_disc_resp;
2720         p2p.prov_disc_fail = wpas_prov_disc_fail;
2721         p2p.invitation_process = wpas_invitation_process;
2722         p2p.invitation_received = wpas_invitation_received;
2723         p2p.invitation_result = wpas_invitation_result;
2724         p2p.get_noa = wpas_get_noa;
2725         p2p.go_connected = wpas_go_connected;
2726
2727         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2728         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2729         p2p.dev_name = wpa_s->conf->device_name;
2730         p2p.manufacturer = wpa_s->conf->manufacturer;
2731         p2p.model_name = wpa_s->conf->model_name;
2732         p2p.model_number = wpa_s->conf->model_number;
2733         p2p.serial_number = wpa_s->conf->serial_number;
2734         if (wpa_s->wps) {
2735                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2736                 p2p.config_methods = wpa_s->wps->config_methods;
2737         }
2738
2739         if (wpa_s->conf->p2p_listen_reg_class &&
2740             wpa_s->conf->p2p_listen_channel) {
2741                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2742                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2743         } else {
2744                 p2p.reg_class = 81;
2745                 /*
2746                  * Pick one of the social channels randomly as the listen
2747                  * channel.
2748                  */
2749                 os_get_random((u8 *) &r, sizeof(r));
2750                 p2p.channel = 1 + (r % 3) * 5;
2751         }
2752         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2753
2754         if (wpa_s->conf->p2p_oper_reg_class &&
2755             wpa_s->conf->p2p_oper_channel) {
2756                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2757                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2758                 p2p.cfg_op_channel = 1;
2759                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2760                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2761
2762         } else {
2763                 p2p.op_reg_class = 81;
2764                 /*
2765                  * Use random operation channel from (1, 6, 11) if no other
2766                  * preference is indicated.
2767                  */
2768                 os_get_random((u8 *) &r, sizeof(r));
2769                 p2p.op_channel = 1 + (r % 3) * 5;
2770                 p2p.cfg_op_channel = 0;
2771                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2772                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2773         }
2774         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2775                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2776                 p2p.country[2] = 0x04;
2777         } else
2778                 os_memcpy(p2p.country, "XX\x04", 3);
2779
2780         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2781                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2782                            "channel list");
2783                 return -1;
2784         }
2785
2786         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2787                   WPS_DEV_TYPE_LEN);
2788
2789         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2790         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2791                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2792
2793         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2794                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2795
2796         p2p.max_peers = 100;
2797
2798         if (wpa_s->conf->p2p_ssid_postfix) {
2799                 p2p.ssid_postfix_len =
2800                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2801                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2802                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2803                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2804                           p2p.ssid_postfix_len);
2805         }
2806
2807         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2808
2809 #ifdef ANDROID_P2P
2810         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) {
2811                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2812                 wpa_printf(MSG_DEBUG, "P2P: Multi channel concurrency support");
2813         } else {
2814         // Add support for WPA_DRIVER_FLAGS_P2P_CONCURRENT
2815                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2816                 wpa_printf(MSG_DEBUG, "P2P: Single channel concurrency support");
2817         }
2818 #endif
2819
2820         global->p2p = p2p_init(&p2p);
2821         if (global->p2p == NULL)
2822                 return -1;
2823         global->p2p_init_wpa_s = wpa_s;
2824
2825         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2826                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2827                         continue;
2828                 p2p_add_wps_vendor_extension(
2829                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2830         }
2831
2832         return 0;
2833 }
2834
2835
2836 /**
2837  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2838  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2839  *
2840  * This function deinitialize per-interface P2P data.
2841  */
2842 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2843 {
2844         if (wpa_s->driver && wpa_s->drv_priv)
2845                 wpa_drv_probe_req_report(wpa_s, 0);
2846
2847         if (wpa_s->go_params) {
2848                 /* Clear any stored provisioning info */
2849                 p2p_clear_provisioning_info(
2850                         wpa_s->global->p2p,
2851                         wpa_s->go_params->peer_device_addr);
2852         }
2853
2854         os_free(wpa_s->go_params);
2855         wpa_s->go_params = NULL;
2856         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2857         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2858         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2859         wpa_s->p2p_long_listen = 0;
2860         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2861         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2862         wpas_p2p_remove_pending_group_interface(wpa_s);
2863
2864         /* TODO: remove group interface from the driver if this wpa_s instance
2865          * is on top of a P2P group interface */
2866 }
2867
2868
2869 /**
2870  * wpas_p2p_deinit_global - Deinitialize global P2P module
2871  * @global: Pointer to global data from wpa_supplicant_init()
2872  *
2873  * This function deinitializes the global (per device) P2P module.
2874  */
2875 void wpas_p2p_deinit_global(struct wpa_global *global)
2876 {
2877         struct wpa_supplicant *wpa_s, *tmp;
2878
2879         wpa_s = global->ifaces;
2880         if (wpa_s)
2881                 wpas_p2p_service_flush(wpa_s);
2882
2883         if (global->p2p == NULL)
2884                 return;
2885
2886         /* Remove remaining P2P group interfaces */
2887         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2888                 wpa_s = wpa_s->next;
2889         while (wpa_s) {
2890                 tmp = global->ifaces;
2891                 while (tmp &&
2892                        (tmp == wpa_s ||
2893                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2894                         tmp = tmp->next;
2895                 }
2896                 if (tmp == NULL)
2897                         break;
2898                 /* Disconnect from the P2P group and deinit the interface */
2899                 wpas_p2p_disconnect(tmp);
2900         }
2901
2902         /*
2903          * Deinit GO data on any possibly remaining interface (if main
2904          * interface is used as GO).
2905          */
2906         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2907                 if (wpa_s->ap_iface)
2908                         wpas_p2p_group_deinit(wpa_s);
2909         }
2910
2911         p2p_deinit(global->p2p);
2912         global->p2p = NULL;
2913         global->p2p_init_wpa_s = NULL;
2914 }
2915
2916
2917 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2918 {
2919         if (wpa_s->drv_flags &
2920             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2921              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2922                 return 1; /* P2P group requires a new interface in every case
2923                            */
2924         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2925                 return 0; /* driver does not support concurrent operations */
2926         if (wpa_s->global->ifaces->next)
2927                 return 1; /* more that one interface already in use */
2928         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2929                 return 1; /* this interface is already in use */
2930         return 0;
2931 }
2932
2933
2934 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2935                                  const u8 *peer_addr,
2936                                  enum p2p_wps_method wps_method,
2937                                  int go_intent, const u8 *own_interface_addr,
2938                                  unsigned int force_freq, int persistent_group,
2939                                  struct wpa_ssid *ssid)
2940 {
2941         if (persistent_group && wpa_s->conf->persistent_reconnect)
2942                 persistent_group = 2;
2943
2944         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2945                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2946                                            go_intent, own_interface_addr,
2947                                            force_freq, persistent_group);
2948         }
2949
2950         /*
2951          * Increase GO config timeout if HT40 is used since it takes some time
2952          * to scan channels for coex purposes before the BSS can be started.
2953          */
2954         p2p_set_config_timeout(wpa_s->global->p2p,
2955                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2956
2957         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2958                            go_intent, own_interface_addr, force_freq,
2959                            persistent_group, ssid ? ssid->ssid : NULL,
2960                            ssid ? ssid->ssid_len : 0,
2961                            wpa_s->p2p_pd_before_go_neg);
2962 }
2963
2964
2965 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2966                                 const u8 *peer_addr,
2967                                 enum p2p_wps_method wps_method,
2968                                 int go_intent, const u8 *own_interface_addr,
2969                                 unsigned int force_freq, int persistent_group,
2970                                 struct wpa_ssid *ssid)
2971 {
2972         if (persistent_group && wpa_s->conf->persistent_reconnect)
2973                 persistent_group = 2;
2974
2975         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2976                 return -1;
2977
2978         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2979                              go_intent, own_interface_addr, force_freq,
2980                              persistent_group, ssid ? ssid->ssid : NULL,
2981                              ssid ? ssid->ssid_len : 0);
2982 }
2983
2984
2985 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2986 {
2987         wpa_s->p2p_join_scan_count++;
2988         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2989                    wpa_s->p2p_join_scan_count);
2990         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2991                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2992                            " for join operationg - stop join attempt",
2993                            MAC2STR(wpa_s->pending_join_iface_addr));
2994                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2995                 if (wpa_s->p2p_auto_pd) {
2996                         wpa_s->p2p_auto_pd = 0;
2997                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2998                                 " p2p_dev_addr=" MACSTR " status=N/A",
2999                                 MAC2STR(wpa_s->pending_join_dev_addr));
3000                         return;
3001                 }
3002                 wpa_msg(wpa_s->parent, MSG_INFO,
3003                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3004         }
3005 }
3006
3007
3008 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3009 {
3010         struct wpa_supplicant *wpa_s = eloop_ctx;
3011         if (!wpa_s->pending_pd_before_join)
3012                 return;
3013         /*
3014          * Provision Discovery Response may have been lost - try to connect
3015          * anyway since we do not need any information from this PD.
3016          */
3017         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3018                    "try to connect anyway");
3019         wpas_p2p_join_start(wpa_s);
3020 }
3021
3022
3023 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3024 {
3025         struct wpa_supplicant *iface;
3026         int shared_freq;
3027         u8 bssid[ETH_ALEN];
3028
3029         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3030                 return 0;
3031
3032         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3033                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3034                         continue;
3035                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3036                         continue;
3037                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3038                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3039                         shared_freq = iface->current_ssid->frequency;
3040                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3041                         shared_freq = iface->assoc_freq;
3042                 else
3043                         shared_freq = 0;
3044
3045                 if (shared_freq && freq != shared_freq) {
3046                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3047                                    "connected on %d MHz - new connection on "
3048                                    "%d MHz", iface->ifname, shared_freq, freq);
3049                         return 1;
3050                 }
3051         }
3052
3053         shared_freq = wpa_drv_shared_freq(wpa_s);
3054         if (shared_freq > 0 && shared_freq != freq) {
3055                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3056                            "virtual interface connected on %d MHz - new "
3057                            "connection on %d MHz", shared_freq, freq);
3058                 return 1;
3059         }
3060
3061         return 0;
3062 }
3063
3064
3065 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3066                             const u8 *peer_dev_addr)
3067 {
3068         struct wpa_bss *bss;
3069         int updated;
3070
3071         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3072         if (bss == NULL)
3073                 return -1;
3074         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3075                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3076                            "last scan");
3077                 return 0;
3078         }
3079
3080         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3081         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3082                    "%ld.%06ld (%supdated in last scan)",
3083                    bss->last_update.sec, bss->last_update.usec,
3084                    updated ? "": "not ");
3085
3086         return updated;
3087 }
3088
3089
3090 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3091                                    struct wpa_scan_results *scan_res)
3092 {
3093         struct wpa_bss *bss;
3094         int freq;
3095         u8 iface_addr[ETH_ALEN];
3096
3097         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3098
3099         if (wpa_s->global->p2p_disabled)
3100                 return;
3101
3102         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3103                    scan_res ? (int) scan_res->num : -1,
3104                    wpa_s->p2p_auto_join ? "auto_" : "");
3105
3106         if (scan_res)
3107                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3108
3109         if (wpa_s->p2p_auto_pd) {
3110                 int join = wpas_p2p_peer_go(wpa_s,
3111                                             wpa_s->pending_join_dev_addr);
3112                 if (join == 0 &&
3113                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3114                         wpa_s->auto_pd_scan_retry++;
3115                         bss = wpa_bss_get_bssid(wpa_s,
3116                                                 wpa_s->pending_join_dev_addr);
3117                         if (bss) {
3118                                 freq = bss->freq;
3119                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3120                                            "the peer " MACSTR " at %d MHz",
3121                                            wpa_s->auto_pd_scan_retry,
3122                                            MAC2STR(wpa_s->
3123                                                    pending_join_dev_addr),
3124                                            freq);
3125                                 wpas_p2p_join_scan_req(wpa_s, freq);
3126                                 return;
3127                         }
3128                 }
3129
3130                 if (join < 0)
3131                         join = 0;
3132
3133                 wpa_s->p2p_auto_pd = 0;
3134                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3135                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3136                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3137                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3138                                       wpa_s->pending_join_dev_addr,
3139                                       wpa_s->pending_pd_config_methods, join,
3140                                       0) < 0) {
3141                         wpa_s->p2p_auto_pd = 0;
3142                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3143                                 " p2p_dev_addr=" MACSTR " status=N/A",
3144                                 MAC2STR(wpa_s->pending_join_dev_addr));
3145                 }
3146                 return;
3147         }
3148
3149         if (wpa_s->p2p_auto_join) {
3150                 int join = wpas_p2p_peer_go(wpa_s,
3151                                             wpa_s->pending_join_dev_addr);
3152                 if (join < 0) {
3153                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3154                                    "running a GO -> use GO Negotiation");
3155                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3156                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3157                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3158                                          wpa_s->p2p_go_intent,
3159                                          wpa_s->p2p_connect_freq,
3160                                          wpa_s->p2p_persistent_id,
3161                                          wpa_s->p2p_pd_before_go_neg,
3162                                          wpa_s->p2p_go_ht40);
3163                         return;
3164                 }
3165
3166                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3167                            "try to join the group", join ? "" :
3168                            " in older scan");
3169                 if (!join)
3170                         wpa_s->p2p_fallback_to_go_neg = 1;
3171         }
3172
3173         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3174                                  wpa_s->pending_join_iface_addr);
3175         if (freq < 0 &&
3176             p2p_get_interface_addr(wpa_s->global->p2p,
3177                                    wpa_s->pending_join_dev_addr,
3178                                    iface_addr) == 0 &&
3179             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3180         {
3181                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3182                            "address for join from " MACSTR " to " MACSTR
3183                            " based on newly discovered P2P peer entry",
3184                            MAC2STR(wpa_s->pending_join_iface_addr),
3185                            MAC2STR(iface_addr));
3186                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3187                           ETH_ALEN);
3188
3189                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3190                                          wpa_s->pending_join_iface_addr);
3191         }
3192         if (freq >= 0) {
3193                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3194                            "from P2P peer table: %d MHz", freq);
3195         }
3196         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3197         if (bss) {
3198                 freq = bss->freq;
3199                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3200                            "from BSS table: %d MHz", freq);
3201         }
3202         if (freq > 0) {
3203                 u16 method;
3204
3205                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3206                         wpa_msg(wpa_s->parent, MSG_INFO,
3207                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3208                                 "reason=FREQ_CONFLICT");
3209                         return;
3210                 }
3211
3212                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3213                            "prior to joining an existing group (GO " MACSTR
3214                            " freq=%u MHz)",
3215                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3216                 wpa_s->pending_pd_before_join = 1;
3217
3218                 switch (wpa_s->pending_join_wps_method) {
3219                 case WPS_PIN_DISPLAY:
3220                         method = WPS_CONFIG_KEYPAD;
3221                         break;
3222                 case WPS_PIN_KEYPAD:
3223                         method = WPS_CONFIG_DISPLAY;
3224                         break;
3225                 case WPS_PBC:
3226                         method = WPS_CONFIG_PUSHBUTTON;
3227                         break;
3228                 default:
3229                         method = 0;
3230                         break;
3231                 }
3232
3233                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3234                                                wpa_s->pending_join_dev_addr) ==
3235                      method)) {
3236                         /*
3237                          * We have already performed provision discovery for
3238                          * joining the group. Proceed directly to join
3239                          * operation without duplicated provision discovery. */
3240                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3241                                    "with " MACSTR " already done - proceed to "
3242                                    "join",
3243                                    MAC2STR(wpa_s->pending_join_dev_addr));
3244                         wpa_s->pending_pd_before_join = 0;
3245                         goto start;
3246                 }
3247
3248                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3249                                       wpa_s->pending_join_dev_addr, method, 1,
3250                                       freq) < 0) {
3251                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3252                                    "Discovery Request before joining an "
3253                                    "existing group");
3254                         wpa_s->pending_pd_before_join = 0;
3255                         goto start;
3256                 }
3257
3258                 /*
3259                  * Actual join operation will be started from the Action frame
3260                  * TX status callback (if no ACK is received) or when the
3261                  * Provision Discovery Response is received. Use a short
3262                  * timeout as a backup mechanism should the Provision Discovery
3263                  * Response be lost for any reason.
3264                  */
3265                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3266                                      NULL);
3267                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3268                                        wpa_s, NULL);
3269                 return;
3270         }
3271
3272         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3273         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3274         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3275         wpas_p2p_check_join_scan_limit(wpa_s);
3276         return;
3277
3278 start:
3279         /* Start join operation immediately */
3280         wpas_p2p_join_start(wpa_s);
3281 }
3282
3283
3284 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3285 {
3286         int ret;
3287         struct wpa_driver_scan_params params;
3288         struct wpabuf *wps_ie, *ies;
3289         size_t ielen;
3290         int freqs[2] = { 0, 0 };
3291 #ifdef ANDROID_P2P
3292         int oper_freq;
3293
3294         /* If freq is not provided, check the operating freq of the GO and do a
3295          * a directed scan to save time
3296          */
3297         if(!freq) {
3298                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3299                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3300         }
3301 #endif
3302         os_memset(&params, 0, sizeof(params));
3303
3304         /* P2P Wildcard SSID */
3305         params.num_ssids = 1;
3306         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3307         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3308
3309         wpa_s->wps->dev.p2p = 1;
3310         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3311                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3312                                         NULL);
3313         if (wps_ie == NULL) {
3314                 wpas_p2p_scan_res_join(wpa_s, NULL);
3315                 return;
3316         }
3317
3318         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3319         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3320         if (ies == NULL) {
3321                 wpabuf_free(wps_ie);
3322                 wpas_p2p_scan_res_join(wpa_s, NULL);
3323                 return;
3324         }
3325         wpabuf_put_buf(ies, wps_ie);
3326         wpabuf_free(wps_ie);
3327
3328         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3329
3330         params.p2p_probe = 1;
3331         params.extra_ies = wpabuf_head(ies);
3332         params.extra_ies_len = wpabuf_len(ies);
3333         if (freq > 0) {
3334                 freqs[0] = freq;
3335                 params.freqs = freqs;
3336         }
3337
3338         /*
3339          * Run a scan to update BSS table and start Provision Discovery once
3340          * the new scan results become available.
3341          */
3342         ret = wpa_drv_scan(wpa_s, &params);
3343         if (!ret)
3344                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3345
3346         wpabuf_free(ies);
3347
3348         if (ret) {
3349                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3350                            "try again later");
3351                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3352                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3353                 wpas_p2p_check_join_scan_limit(wpa_s);
3354         }
3355 }
3356
3357
3358 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3359 {
3360         struct wpa_supplicant *wpa_s = eloop_ctx;
3361         wpas_p2p_join_scan_req(wpa_s, 0);
3362 }
3363
3364
3365 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3366                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3367                          int auto_join)
3368 {
3369         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3370                    MACSTR " dev " MACSTR ")%s",
3371                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3372                    auto_join ? " (auto_join)" : "");
3373
3374         wpa_s->p2p_auto_pd = 0;
3375         wpa_s->p2p_auto_join = !!auto_join;
3376         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3377         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3378         wpa_s->pending_join_wps_method = wps_method;
3379
3380         /* Make sure we are not running find during connection establishment */
3381         wpas_p2p_stop_find(wpa_s);
3382
3383         wpa_s->p2p_join_scan_count = 0;
3384         wpas_p2p_join_scan(wpa_s, NULL);
3385         return 0;
3386 }
3387
3388
3389 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3390 {
3391         struct wpa_supplicant *group;
3392         struct p2p_go_neg_results res;
3393         struct wpa_bss *bss;
3394
3395         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3396         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3397         if (group == NULL)
3398                 return -1;
3399         if (group != wpa_s) {
3400                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3401                           sizeof(group->p2p_pin));
3402                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3403         }
3404
3405         group->p2p_in_provisioning = 1;
3406         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3407
3408         os_memset(&res, 0, sizeof(res));
3409         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3410                   ETH_ALEN);
3411         res.wps_method = wpa_s->pending_join_wps_method;
3412         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3413         if (bss) {
3414                 res.freq = bss->freq;
3415                 res.ssid_len = bss->ssid_len;
3416                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3417         }
3418
3419         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3420                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3421                            "starting client");
3422                 wpa_drv_cancel_remain_on_channel(wpa_s);
3423                 wpa_s->off_channel_freq = 0;
3424                 wpa_s->roc_waiting_drv_freq = 0;
3425         }
3426         wpas_start_wps_enrollee(group, &res);
3427
3428         /*
3429          * Allow a longer timeout for join-a-running-group than normal 15
3430          * second group formation timeout since the GO may not have authorized
3431          * our connection yet.
3432          */
3433         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3434         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3435                                wpa_s, NULL);
3436
3437         return 0;
3438 }
3439
3440
3441 /**
3442  * wpas_p2p_connect - Request P2P Group Formation to be started
3443  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3444  * @peer_addr: Address of the peer P2P Device
3445  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3446  * @persistent_group: Whether to create a persistent group
3447  * @auto_join: Whether to select join vs. GO Negotiation automatically
3448  * @join: Whether to join an existing group (as a client) instead of starting
3449  *      Group Owner negotiation; @peer_addr is BSSID in that case
3450  * @auth: Whether to only authorize the connection instead of doing that and
3451  *      initiating Group Owner negotiation
3452  * @go_intent: GO Intent or -1 to use default
3453  * @freq: Frequency for the group or 0 for auto-selection
3454  * @persistent_id: Persistent group credentials to use for forcing GO
3455  *      parameters or -1 to generate new values (SSID/passphrase)
3456  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3457  *      interoperability workaround when initiating group formation
3458  * @ht40: Start GO with 40 MHz channel width
3459  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3460  *      failure, -2 on failure due to channel not currently available,
3461  *      -3 if forced channel is not supported
3462  */
3463 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3464                      const char *pin, enum p2p_wps_method wps_method,
3465                      int persistent_group, int auto_join, int join, int auth,
3466                      int go_intent, int freq, int persistent_id, int pd,
3467                      int ht40)
3468 {
3469         int force_freq = 0, oper_freq = 0;
3470         u8 bssid[ETH_ALEN];
3471         int ret = 0;
3472         enum wpa_driver_if_type iftype;
3473         const u8 *if_addr;
3474         struct wpa_ssid *ssid = NULL;
3475
3476         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3477                 return -1;
3478
3479         if (persistent_id >= 0) {
3480                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3481                 if (ssid == NULL || ssid->disabled != 2 ||
3482                     ssid->mode != WPAS_MODE_P2P_GO)
3483                         return -1;
3484         }
3485
3486         if (go_intent < 0)
3487                 go_intent = wpa_s->conf->p2p_go_intent;
3488
3489         if (!auth)
3490                 wpa_s->p2p_long_listen = 0;
3491
3492         wpa_s->p2p_wps_method = wps_method;
3493         wpa_s->p2p_persistent_group = !!persistent_group;
3494         wpa_s->p2p_persistent_id = persistent_id;
3495         wpa_s->p2p_go_intent = go_intent;
3496         wpa_s->p2p_connect_freq = freq;
3497         wpa_s->p2p_fallback_to_go_neg = 0;
3498         wpa_s->p2p_pd_before_go_neg = !!pd;
3499         wpa_s->p2p_go_ht40 = !!ht40;
3500
3501         if (pin)
3502                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3503         else if (wps_method == WPS_PIN_DISPLAY) {
3504                 ret = wps_generate_pin();
3505                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3506                             ret);
3507                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3508                            wpa_s->p2p_pin);
3509         } else
3510                 wpa_s->p2p_pin[0] = '\0';
3511
3512         if (join || auto_join) {
3513                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3514                 if (auth) {
3515                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3516                                    "connect a running group from " MACSTR,
3517                                    MAC2STR(peer_addr));
3518                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3519                         return ret;
3520                 }
3521                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3522                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3523                                            iface_addr) < 0) {
3524                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3525                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3526                                          dev_addr);
3527                 }
3528                 if (auto_join) {
3529                         os_get_time(&wpa_s->p2p_auto_started);
3530                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3531                                    "%ld.%06ld",
3532                                    wpa_s->p2p_auto_started.sec,
3533                                    wpa_s->p2p_auto_started.usec);
3534                 }
3535                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3536                                   auto_join) < 0)
3537                         return -1;
3538                 return ret;
3539         }
3540
3541         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3542             wpa_s->assoc_freq)
3543                 oper_freq = wpa_s->assoc_freq;
3544         else {
3545                 oper_freq = wpa_drv_shared_freq(wpa_s);
3546                 if (oper_freq < 0)
3547                         oper_freq = 0;
3548         }
3549
3550         if (freq > 0) {
3551                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3552                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3553                                    "(%u MHz) is not supported for P2P uses",
3554                                    freq);
3555                         return -3;
3556                 }
3557
3558                 if (oper_freq > 0 && freq != oper_freq &&
3559                     !(wpa_s->drv_flags &
3560                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3561                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3562                                    "on %u MHz while connected on another "
3563                                    "channel (%u MHz)", freq, oper_freq);
3564                         return -2;
3565                 }
3566                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3567                            "requested channel (%u MHz)", freq);
3568                 force_freq = freq;
3569         } else if (oper_freq > 0 &&
3570                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3571                 if (!(wpa_s->drv_flags &
3572                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3573                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3574                                    "while connected on non-P2P supported "
3575                                    "channel (%u MHz)", oper_freq);
3576                         return -2;
3577                 }
3578                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3579                            "(%u MHz) not available for P2P - try to use "
3580                            "another channel", oper_freq);
3581                 force_freq = 0;
3582         } else if (oper_freq > 0) {
3583                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3584                            "channel we are already using (%u MHz) on another "
3585                            "interface", oper_freq);
3586                 force_freq = oper_freq;
3587         }
3588
3589         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3590
3591         if (wpa_s->create_p2p_iface) {
3592                 /* Prepare to add a new interface for the group */
3593                 iftype = WPA_IF_P2P_GROUP;
3594                 if (go_intent == 15)
3595                         iftype = WPA_IF_P2P_GO;
3596                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3597                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3598                                    "interface for the group");
3599                         return -1;
3600                 }
3601
3602                 if_addr = wpa_s->pending_interface_addr;
3603         } else
3604                 if_addr = wpa_s->own_addr;
3605
3606         if (auth) {
3607                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3608                                          go_intent, if_addr,
3609                                          force_freq, persistent_group, ssid) <
3610                     0)
3611                         return -1;
3612                 return ret;
3613         }
3614
3615         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3616                                   go_intent, if_addr, force_freq,
3617                                   persistent_group, ssid) < 0) {
3618                 if (wpa_s->create_p2p_iface)
3619                         wpas_p2p_remove_pending_group_interface(wpa_s);
3620                 return -1;
3621         }
3622         return ret;
3623 }
3624
3625
3626 /**
3627  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3628  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3629  * @freq: Frequency of the channel in MHz
3630  * @duration: Duration of the stay on the channel in milliseconds
3631  *
3632  * This callback is called when the driver indicates that it has started the
3633  * requested remain-on-channel duration.
3634  */
3635 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3636                                    unsigned int freq, unsigned int duration)
3637 {
3638         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3639                 return;
3640         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3641                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3642                               wpa_s->pending_listen_duration);
3643                 wpa_s->pending_listen_freq = 0;
3644         }
3645 }
3646
3647
3648 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3649                                  unsigned int timeout)
3650 {
3651         /* Limit maximum Listen state time based on driver limitation. */
3652         if (timeout > wpa_s->max_remain_on_chan)
3653                 timeout = wpa_s->max_remain_on_chan;
3654
3655         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3656                 return wpa_drv_p2p_listen(wpa_s, timeout);
3657
3658         return p2p_listen(wpa_s->global->p2p, timeout);
3659 }
3660
3661
3662 /**
3663  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3664  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3665  * @freq: Frequency of the channel in MHz
3666  *
3667  * This callback is called when the driver indicates that a remain-on-channel
3668  * operation has been completed, i.e., the duration on the requested channel
3669  * has timed out.
3670  */
3671 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3672                                           unsigned int freq)
3673 {
3674         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3675                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3676                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3677         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3678                 return;
3679         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3680                 return; /* P2P module started a new operation */
3681         if (wpa_s->pending_action_tx)
3682                 return;
3683         if (wpa_s->p2p_long_listen > 0)
3684                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3685         if (wpa_s->p2p_long_listen > 0) {
3686                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3687                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3688         }
3689 }
3690
3691
3692 /**
3693  * wpas_p2p_group_remove - Remove a P2P group
3694  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3695  * @ifname: Network interface name of the group interface or "*" to remove all
3696  *      groups
3697  * Returns: 0 on success, -1 on failure
3698  *
3699  * This function is used to remove a P2P group. This can be used to disconnect
3700  * from a group in which the local end is a P2P Client or to end a P2P Group in
3701  * case the local end is the Group Owner. If a virtual network interface was
3702  * created for this group, that interface will be removed. Otherwise, only the
3703  * configured P2P group network will be removed from the interface.
3704  */
3705 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3706 {
3707         struct wpa_global *global = wpa_s->global;
3708
3709         if (os_strcmp(ifname, "*") == 0) {
3710                 struct wpa_supplicant *prev;
3711                 wpa_s = global->ifaces;
3712                 while (wpa_s) {
3713                         prev = wpa_s;
3714                         wpa_s = wpa_s->next;
3715                         wpas_p2p_disconnect(prev);
3716                 }
3717                 return 0;
3718         }
3719
3720         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3721                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3722                         break;
3723         }
3724
3725         return wpas_p2p_disconnect(wpa_s);
3726 }
3727
3728
3729 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3730                                    struct p2p_go_neg_results *params,
3731                                    int freq, int ht40)
3732 {
3733         u8 bssid[ETH_ALEN];
3734         int res;
3735
3736         os_memset(params, 0, sizeof(*params));
3737         params->role_go = 1;
3738         params->ht40 = ht40;
3739         if (freq) {
3740                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3741                            "frequency %d MHz", freq);
3742                 params->freq = freq;
3743         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3744                    wpa_s->conf->p2p_oper_channel >= 1 &&
3745                    wpa_s->conf->p2p_oper_channel <= 11) {
3746                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3747                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3748                            "frequency %d MHz", params->freq);
3749         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3750                    wpa_s->conf->p2p_oper_reg_class == 124) {
3751                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3752                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3753                            "frequency %d MHz", params->freq);
3754         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3755                    wpa_s->best_overall_freq > 0 &&
3756                    p2p_supported_freq(wpa_s->global->p2p,
3757                                       wpa_s->best_overall_freq)) {
3758                 params->freq = wpa_s->best_overall_freq;
3759                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3760                            "channel %d MHz", params->freq);
3761         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3762                    wpa_s->best_24_freq > 0 &&
3763                    p2p_supported_freq(wpa_s->global->p2p,
3764                                       wpa_s->best_24_freq)) {
3765                 params->freq = wpa_s->best_24_freq;
3766                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3767                            "channel %d MHz", params->freq);
3768         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3769                    wpa_s->best_5_freq > 0 &&
3770                    p2p_supported_freq(wpa_s->global->p2p,
3771                                       wpa_s->best_5_freq)) {
3772                 params->freq = wpa_s->best_5_freq;
3773                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3774                            "channel %d MHz", params->freq);
3775         } else {
3776                 int chan;
3777                 for (chan = 0; chan < 11; chan++) {
3778                         params->freq = 2412 + chan * 5;
3779                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3780                                                       params->freq))
3781                                 break;
3782                 }
3783                 if (chan == 11) {
3784                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3785                                    "allowed");
3786                         return -1;
3787                 }
3788                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3789                            "known)", params->freq);
3790         }
3791
3792         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3793             wpa_s->assoc_freq && !freq) {
3794                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3795                            "already using");
3796                 params->freq = wpa_s->assoc_freq;
3797         }
3798
3799         res = wpa_drv_shared_freq(wpa_s);
3800         if (res > 0 && !freq) {
3801                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3802                            "already using on a shared interface");
3803                 params->freq = res;
3804         } else if (res > 0 && freq != res &&
3805                    !(wpa_s->drv_flags &
3806                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3807                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3808                            "while connected on another channel (%u MHz)",
3809                            freq, res);
3810                 return -1;
3811         }
3812
3813         return 0;
3814 }
3815
3816
3817 static struct wpa_supplicant *
3818 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3819                          int go)
3820 {
3821         struct wpa_supplicant *group_wpa_s;
3822
3823         if (!wpas_p2p_create_iface(wpa_s))
3824                 return wpa_s;
3825
3826         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3827                                          WPA_IF_P2P_CLIENT) < 0)
3828                 return NULL;
3829         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3830         if (group_wpa_s == NULL) {
3831                 wpas_p2p_remove_pending_group_interface(wpa_s);
3832                 return NULL;
3833         }
3834
3835         return group_wpa_s;
3836 }
3837
3838
3839 /**
3840  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3841  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3842  * @persistent_group: Whether to create a persistent group
3843  * @freq: Frequency for the group or 0 to indicate no hardcoding
3844  * Returns: 0 on success, -1 on failure
3845  *
3846  * This function creates a new P2P group with the local end as the Group Owner,
3847  * i.e., without using Group Owner Negotiation.
3848  */
3849 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3850                        int freq, int ht40)
3851 {
3852         struct p2p_go_neg_results params;
3853         unsigned int r;
3854
3855         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3856                 return -1;
3857
3858         /* Make sure we are not running find during connection establishment */
3859         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3860         wpas_p2p_stop_find(wpa_s);
3861
3862         if (freq == 2) {
3863                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3864                            "band");
3865                 if (wpa_s->best_24_freq > 0 &&
3866                     p2p_supported_freq(wpa_s->global->p2p,
3867                                        wpa_s->best_24_freq)) {
3868                         freq = wpa_s->best_24_freq;
3869                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3870                                    "channel: %d MHz", freq);
3871                 } else {
3872                         os_get_random((u8 *) &r, sizeof(r));
3873                         freq = 2412 + (r % 3) * 25;
3874                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3875                                    "channel: %d MHz", freq);
3876                 }
3877         }
3878
3879         if (freq == 5) {
3880                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3881                            "band");
3882                 if (wpa_s->best_5_freq > 0 &&
3883                     p2p_supported_freq(wpa_s->global->p2p,
3884                                        wpa_s->best_5_freq)) {
3885                         freq = wpa_s->best_5_freq;
3886                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3887                                    "channel: %d MHz", freq);
3888                 } else {
3889                         os_get_random((u8 *) &r, sizeof(r));
3890                         freq = 5180 + (r % 4) * 20;
3891                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3892                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3893                                            "5 GHz channel for P2P group");
3894                                 return -1;
3895                         }
3896                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3897                                    "channel: %d MHz", freq);
3898                 }
3899         }
3900
3901         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3902                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3903                            "(%u MHz) is not supported for P2P uses",
3904                            freq);
3905                 return -1;
3906         }
3907
3908         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3909                 return -1;
3910         if (params.freq &&
3911             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3912                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3913                            "(%u MHz) is not supported for P2P uses",
3914                            params.freq);
3915                 return -1;
3916         }
3917         p2p_go_params(wpa_s->global->p2p, &params);
3918         params.persistent_group = persistent_group;
3919
3920         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3921         if (wpa_s == NULL)
3922                 return -1;
3923         wpas_start_wps_go(wpa_s, &params, 0);
3924
3925         return 0;
3926 }
3927
3928
3929 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3930                                  struct wpa_ssid *params, int addr_allocated)
3931 {
3932         struct wpa_ssid *ssid;
3933
3934         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3935         if (wpa_s == NULL)
3936                 return -1;
3937
3938         wpa_supplicant_ap_deinit(wpa_s);
3939
3940         ssid = wpa_config_add_network(wpa_s->conf);
3941         if (ssid == NULL)
3942                 return -1;
3943         wpa_config_set_network_defaults(ssid);
3944         ssid->temporary = 1;
3945         ssid->proto = WPA_PROTO_RSN;
3946         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3947         ssid->group_cipher = WPA_CIPHER_CCMP;
3948         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3949         ssid->ssid = os_malloc(params->ssid_len);
3950         if (ssid->ssid == NULL) {
3951                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3952                 return -1;
3953         }
3954         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3955         ssid->ssid_len = params->ssid_len;
3956         ssid->p2p_group = 1;
3957         ssid->export_keys = 1;
3958         if (params->psk_set) {
3959                 os_memcpy(ssid->psk, params->psk, 32);
3960                 ssid->psk_set = 1;
3961         }
3962         if (params->passphrase)
3963                 ssid->passphrase = os_strdup(params->passphrase);
3964
3965         wpa_supplicant_select_network(wpa_s, ssid);
3966
3967         wpa_s->show_group_started = 1;
3968
3969         return 0;
3970 }
3971
3972
3973 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3974                                   struct wpa_ssid *ssid, int addr_allocated,
3975                                   int freq, int ht40)
3976 {
3977         struct p2p_go_neg_results params;
3978         int go = 0;
3979
3980         if (ssid->disabled != 2 || ssid->ssid == NULL)
3981                 return -1;
3982
3983         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3984             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3985                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3986                            "already running");
3987                 return 0;
3988         }
3989
3990         /* Make sure we are not running find during connection establishment */
3991         wpas_p2p_stop_find(wpa_s);
3992
3993         wpa_s->p2p_fallback_to_go_neg = 0;
3994
3995         if (ssid->mode == WPAS_MODE_INFRA)
3996                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3997
3998         if (ssid->mode != WPAS_MODE_P2P_GO)
3999                 return -1;
4000
4001         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4002                 return -1;
4003
4004         params.role_go = 1;
4005         if (ssid->passphrase == NULL ||
4006             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4007                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4008                            "group");
4009                 return -1;
4010         }
4011         os_strlcpy(params.passphrase, ssid->passphrase,
4012                    sizeof(params.passphrase));
4013         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4014         params.ssid_len = ssid->ssid_len;
4015         params.persistent_group = 1;
4016
4017         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4018         if (wpa_s == NULL)
4019                 return -1;
4020
4021         wpas_start_wps_go(wpa_s, &params, 0);
4022
4023         return 0;
4024 }
4025
4026
4027 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4028                                struct wpabuf *proberesp_ies)
4029 {
4030         struct wpa_supplicant *wpa_s = ctx;
4031         if (wpa_s->ap_iface) {
4032                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4033                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4034                         wpabuf_free(beacon_ies);
4035                         wpabuf_free(proberesp_ies);
4036                         return;
4037                 }
4038                 if (beacon_ies) {
4039                         wpabuf_free(hapd->p2p_beacon_ie);
4040                         hapd->p2p_beacon_ie = beacon_ies;
4041                 }
4042                 wpabuf_free(hapd->p2p_probe_resp_ie);
4043                 hapd->p2p_probe_resp_ie = proberesp_ies;
4044         } else {
4045                 wpabuf_free(beacon_ies);
4046                 wpabuf_free(proberesp_ies);
4047         }
4048         wpa_supplicant_ap_update_beacon(wpa_s);
4049 }
4050
4051
4052 static void wpas_p2p_idle_update(void *ctx, int idle)
4053 {
4054         struct wpa_supplicant *wpa_s = ctx;
4055         if (!wpa_s->ap_iface)
4056                 return;
4057         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4058         if (idle)
4059                 wpas_p2p_set_group_idle_timeout(wpa_s);
4060         else
4061                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4062 }
4063
4064
4065 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4066                                        struct wpa_ssid *ssid)
4067 {
4068         struct p2p_group *group;
4069         struct p2p_group_config *cfg;
4070
4071         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4072                 return NULL;
4073         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4074                 return NULL;
4075
4076         cfg = os_zalloc(sizeof(*cfg));
4077         if (cfg == NULL)
4078                 return NULL;
4079
4080         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4081                 cfg->persistent_group = 2;
4082         else if (ssid->p2p_persistent_group)
4083                 cfg->persistent_group = 1;
4084         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4085         if (wpa_s->max_stations &&
4086             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4087                 cfg->max_clients = wpa_s->max_stations;
4088         else
4089                 cfg->max_clients = wpa_s->conf->max_num_sta;
4090         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4091         cfg->ssid_len = ssid->ssid_len;
4092         cfg->cb_ctx = wpa_s;
4093         cfg->ie_update = wpas_p2p_ie_update;
4094         cfg->idle_update = wpas_p2p_idle_update;
4095
4096         group = p2p_group_init(wpa_s->global->p2p, cfg);
4097         if (group == NULL)
4098                 os_free(cfg);
4099         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4100                 p2p_group_notif_formation_done(group);
4101         wpa_s->p2p_group = group;
4102         return group;
4103 }
4104
4105
4106 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4107                           int registrar)
4108 {
4109         struct wpa_ssid *ssid = wpa_s->current_ssid;
4110
4111         if (!wpa_s->p2p_in_provisioning) {
4112                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4113                            "provisioning not in progress");
4114                 return;
4115         }
4116
4117         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4118                 u8 go_dev_addr[ETH_ALEN];
4119                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4120                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4121                                           ssid->ssid_len);
4122                 /* Clear any stored provisioning info */
4123                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4124         }
4125
4126         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4127                              NULL);
4128         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4129                 /*
4130                  * Use a separate timeout for initial data connection to
4131                  * complete to allow the group to be removed automatically if
4132                  * something goes wrong in this step before the P2P group idle
4133                  * timeout mechanism is taken into use.
4134                  */
4135                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4136                                        wpas_p2p_group_formation_timeout,
4137                                        wpa_s->parent, NULL);
4138         }
4139         if (wpa_s->global->p2p)
4140                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4141         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4142                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4143         wpas_group_formation_completed(wpa_s, 1);
4144 }
4145
4146
4147 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4148                          struct wps_event_fail *fail)
4149 {
4150         if (!wpa_s->p2p_in_provisioning) {
4151                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4152                            "provisioning not in progress");
4153                 return;
4154         }
4155
4156         if (wpa_s->go_params) {
4157                 p2p_clear_provisioning_info(
4158                         wpa_s->global->p2p,
4159                         wpa_s->go_params->peer_device_addr);
4160         }
4161
4162         wpas_notify_p2p_wps_failed(wpa_s, fail);
4163 }
4164
4165
4166 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4167                        const char *config_method,
4168                        enum wpas_p2p_prov_disc_use use)
4169 {
4170         u16 config_methods;
4171
4172         wpa_s->p2p_fallback_to_go_neg = 0;
4173         wpa_s->pending_pd_use = NORMAL_PD;
4174         if (os_strncmp(config_method, "display", 7) == 0)
4175                 config_methods = WPS_CONFIG_DISPLAY;
4176         else if (os_strncmp(config_method, "keypad", 6) == 0)
4177                 config_methods = WPS_CONFIG_KEYPAD;
4178         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4179                  os_strncmp(config_method, "pushbutton", 10) == 0)
4180                 config_methods = WPS_CONFIG_PUSHBUTTON;
4181         else {
4182                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4183                 return -1;
4184         }
4185
4186         if (use == WPAS_P2P_PD_AUTO) {
4187                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4188                 wpa_s->pending_pd_config_methods = config_methods;
4189                 wpa_s->p2p_auto_pd = 1;
4190                 wpa_s->p2p_auto_join = 0;
4191                 wpa_s->pending_pd_before_join = 0;
4192                 wpa_s->auto_pd_scan_retry = 0;
4193                 wpas_p2p_stop_find(wpa_s);
4194                 wpa_s->p2p_join_scan_count = 0;
4195                 os_get_time(&wpa_s->p2p_auto_started);
4196                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4197                            wpa_s->p2p_auto_started.sec,
4198                            wpa_s->p2p_auto_started.usec);
4199                 wpas_p2p_join_scan(wpa_s, NULL);
4200                 return 0;
4201         }
4202
4203         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4204                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4205                                                  config_methods,
4206                                                  use == WPAS_P2P_PD_FOR_JOIN);
4207         }
4208
4209         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4210                 return -1;
4211
4212         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4213                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4214                                  0);
4215 }
4216
4217
4218 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4219                               char *end)
4220 {
4221         return p2p_scan_result_text(ies, ies_len, buf, end);
4222 }
4223
4224
4225 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4226 {
4227         if (!wpa_s->pending_action_tx)
4228                 return;
4229
4230         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4231                    "operation request");
4232         wpabuf_free(wpa_s->pending_action_tx);
4233         wpa_s->pending_action_tx = NULL;
4234 }
4235
4236
4237 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4238                   enum p2p_discovery_type type,
4239                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4240                   const u8 *dev_id, unsigned int search_delay)
4241 {
4242         wpas_p2p_clear_pending_action_tx(wpa_s);
4243         wpa_s->p2p_long_listen = 0;
4244
4245         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4246                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4247
4248         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4249             wpa_s->p2p_in_provisioning)
4250                 return -1;
4251
4252         wpa_supplicant_cancel_sched_scan(wpa_s);
4253
4254         return p2p_find(wpa_s->global->p2p, timeout, type,
4255                         num_req_dev_types, req_dev_types, dev_id,
4256                         search_delay);
4257 }
4258
4259
4260 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4261 {
4262         wpas_p2p_clear_pending_action_tx(wpa_s);
4263         wpa_s->p2p_long_listen = 0;
4264         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4265         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4266         wpa_s->global->p2p_cb_on_scan_complete = 0;
4267
4268         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4269                 wpa_drv_p2p_stop_find(wpa_s);
4270                 return;
4271         }
4272
4273         if (wpa_s->global->p2p)
4274                 p2p_stop_find(wpa_s->global->p2p);
4275
4276         wpas_p2p_remove_pending_group_interface(wpa_s);
4277 }
4278
4279
4280 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4281 {
4282         struct wpa_supplicant *wpa_s = eloop_ctx;
4283         wpa_s->p2p_long_listen = 0;
4284 }
4285
4286
4287 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4288 {
4289         int res;
4290
4291         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4292                 return -1;
4293
4294         wpa_supplicant_cancel_sched_scan(wpa_s);
4295         wpas_p2p_clear_pending_action_tx(wpa_s);
4296
4297         if (timeout == 0) {
4298                 /*
4299                  * This is a request for unlimited Listen state. However, at
4300                  * least for now, this is mapped to a Listen state for one
4301                  * hour.
4302                  */
4303                 timeout = 3600;
4304         }
4305         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4306         wpa_s->p2p_long_listen = 0;
4307
4308         /*
4309          * Stop previous find/listen operation to avoid trying to request a new
4310          * remain-on-channel operation while the driver is still running the
4311          * previous one.
4312          */
4313         if (wpa_s->global->p2p)
4314                 p2p_stop_find(wpa_s->global->p2p);
4315
4316         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4317         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4318                 wpa_s->p2p_long_listen = timeout * 1000;
4319                 eloop_register_timeout(timeout, 0,
4320                                        wpas_p2p_long_listen_timeout,
4321                                        wpa_s, NULL);
4322         }
4323
4324         return res;
4325 }
4326
4327
4328 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4329                           u8 *buf, size_t len, int p2p_group)
4330 {
4331         struct wpabuf *p2p_ie;
4332         int ret;
4333
4334         if (wpa_s->global->p2p_disabled)
4335                 return -1;
4336         if (wpa_s->global->p2p == NULL)
4337                 return -1;
4338         if (bss == NULL)
4339                 return -1;
4340
4341         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4342         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4343                                p2p_group, p2p_ie);
4344         wpabuf_free(p2p_ie);
4345
4346         return ret;
4347 }
4348
4349
4350 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4351                           const u8 *dst, const u8 *bssid,
4352                           const u8 *ie, size_t ie_len, int ssi_signal)
4353 {
4354         if (wpa_s->global->p2p_disabled)
4355                 return 0;
4356         if (wpa_s->global->p2p == NULL)
4357                 return 0;
4358
4359         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4360                                  ie, ie_len)) {
4361         case P2P_PREQ_NOT_P2P:
4362                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4363                                  ssi_signal);
4364                 /* fall through */
4365         case P2P_PREQ_MALFORMED:
4366         case P2P_PREQ_NOT_LISTEN:
4367         case P2P_PREQ_NOT_PROCESSED:
4368         default: /* make gcc happy */
4369                 return 0;
4370         case P2P_PREQ_PROCESSED:
4371                 return 1;
4372         }
4373 }
4374
4375
4376 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4377                         const u8 *sa, const u8 *bssid,
4378                         u8 category, const u8 *data, size_t len, int freq)
4379 {
4380         if (wpa_s->global->p2p_disabled)
4381                 return;
4382         if (wpa_s->global->p2p == NULL)
4383                 return;
4384
4385         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4386                       freq);
4387 }
4388
4389
4390 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4391 {
4392         if (wpa_s->global->p2p_disabled)
4393                 return;
4394         if (wpa_s->global->p2p == NULL)
4395                 return;
4396
4397         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4398 }
4399
4400
4401 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4402 {
4403         p2p_group_deinit(wpa_s->p2p_group);
4404         wpa_s->p2p_group = NULL;
4405
4406         wpa_s->ap_configured_cb = NULL;
4407         wpa_s->ap_configured_cb_ctx = NULL;
4408         wpa_s->ap_configured_cb_data = NULL;
4409         wpa_s->connect_without_scan = NULL;
4410 }
4411
4412
4413 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4414 {
4415         wpa_s->p2p_long_listen = 0;
4416
4417         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4418                 return wpa_drv_p2p_reject(wpa_s, addr);
4419
4420         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4421                 return -1;
4422
4423         return p2p_reject(wpa_s->global->p2p, addr);
4424 }
4425
4426
4427 /* Invite to reinvoke a persistent group */
4428 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4429                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4430                     int ht40)
4431 {
4432         enum p2p_invite_role role;
4433         u8 *bssid = NULL;
4434 #ifdef ANDROID_P2P
4435         int force_freq = 0, oper_freq = 0;
4436 #endif
4437
4438         wpa_s->p2p_persistent_go_freq = freq;
4439         wpa_s->p2p_go_ht40 = !!ht40;
4440         if (ssid->mode == WPAS_MODE_P2P_GO) {
4441                 role = P2P_INVITE_ROLE_GO;
4442                 if (peer_addr == NULL) {
4443                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4444                                    "address in invitation command");
4445                         return -1;
4446                 }
4447                 if (wpas_p2p_create_iface(wpa_s)) {
4448                         if (wpas_p2p_add_group_interface(wpa_s,
4449                                                          WPA_IF_P2P_GO) < 0) {
4450                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4451                                            "allocate a new interface for the "
4452                                            "group");
4453                                 return -1;
4454                         }
4455                         bssid = wpa_s->pending_interface_addr;
4456                 } else
4457                         bssid = wpa_s->own_addr;
4458         } else {
4459                 role = P2P_INVITE_ROLE_CLIENT;
4460                 peer_addr = ssid->bssid;
4461         }
4462         wpa_s->pending_invite_ssid_id = ssid->id;
4463
4464 #ifdef ANDROID_P2P
4465         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
4466             wpa_s->assoc_freq)
4467                 oper_freq = wpa_s->assoc_freq;
4468         else {
4469                 oper_freq = wpa_drv_shared_freq(wpa_s);
4470                 if (oper_freq < 0)
4471                         oper_freq = 0;
4472         }
4473
4474         if (freq > 0) {
4475                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
4476                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4477                                    "(%u MHz) is not supported for P2P uses",
4478                                    freq);
4479                         return -3;
4480                 }
4481
4482                 if (oper_freq > 0 && freq != oper_freq &&
4483                     !(wpa_s->drv_flags &
4484                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
4485                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
4486                                    "on %u MHz while connected on another "
4487                                    "channel (%u MHz)", freq, oper_freq);
4488                         return -2;
4489                 }
4490                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4491                            "requested channel (%u MHz)", freq);
4492                 force_freq = freq;
4493         } else if (oper_freq > 0 &&
4494                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
4495                 if (!(wpa_s->drv_flags &
4496                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
4497                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
4498                                    "while connected on non-P2P supported "
4499                                    "channel (%u MHz)", oper_freq);
4500                         return -2;
4501                 }
4502                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
4503                            "(%u MHz) not available for P2P - try to use "
4504                            "another channel", oper_freq);
4505                 force_freq = 0;
4506         } else if (oper_freq > 0) {
4507                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4508                            "channel we are already using (%u MHz) on another "
4509                            "interface", oper_freq);
4510                 force_freq = oper_freq;
4511         }
4512 #endif
4513         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4514                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4515                                           ssid->ssid, ssid->ssid_len,
4516                                           go_dev_addr, 1);
4517
4518         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4519                 return -1;
4520
4521 #ifdef ANDROID_P2P
4522         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4523                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 1);
4524 #else
4525         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4526                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4527 #endif
4528 }
4529
4530
4531 /* Invite to join an active group */
4532 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4533                           const u8 *peer_addr, const u8 *go_dev_addr)
4534 {
4535         struct wpa_global *global = wpa_s->global;
4536         enum p2p_invite_role role;
4537         u8 *bssid = NULL;
4538         struct wpa_ssid *ssid;
4539         int persistent;
4540
4541         wpa_s->p2p_persistent_go_freq = 0;
4542         wpa_s->p2p_go_ht40 = 0;
4543
4544         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4545                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4546                         break;
4547         }
4548         if (wpa_s == NULL) {
4549                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4550                 return -1;
4551         }
4552
4553         ssid = wpa_s->current_ssid;
4554         if (ssid == NULL) {
4555                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4556                            "invitation");
4557                 return -1;
4558         }
4559
4560         persistent = ssid->p2p_persistent_group &&
4561                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4562                                         ssid->ssid, ssid->ssid_len);
4563
4564         if (ssid->mode == WPAS_MODE_P2P_GO) {
4565                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4566                 bssid = wpa_s->own_addr;
4567                 if (go_dev_addr == NULL)
4568                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4569         } else {
4570                 role = P2P_INVITE_ROLE_CLIENT;
4571                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4572                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4573                                    "invite to current group");
4574                         return -1;
4575                 }
4576                 bssid = wpa_s->bssid;
4577                 if (go_dev_addr == NULL &&
4578                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4579                         go_dev_addr = wpa_s->go_dev_addr;
4580         }
4581         wpa_s->parent->pending_invite_ssid_id = -1;
4582
4583         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4584                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4585                                           ssid->ssid, ssid->ssid_len,
4586                                           go_dev_addr, persistent);
4587
4588         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4589                 return -1;
4590
4591         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4592                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4593                           go_dev_addr, persistent);
4594 }
4595
4596
4597 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4598 {
4599         struct wpa_ssid *ssid = wpa_s->current_ssid;
4600         const char *ssid_txt;
4601         u8 go_dev_addr[ETH_ALEN];
4602         int network_id = -1;
4603         int persistent;
4604         int freq;
4605
4606         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4607                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4608                                      wpa_s->parent, NULL);
4609         }
4610
4611         if (!wpa_s->show_group_started || !ssid)
4612                 goto done;
4613
4614         wpa_s->show_group_started = 0;
4615
4616         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4617         os_memset(go_dev_addr, 0, ETH_ALEN);
4618         if (ssid->bssid_set)
4619                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4620         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4621                                                ssid->ssid_len);
4622         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4623
4624         if (wpa_s->global->p2p_group_formation == wpa_s)
4625                 wpa_s->global->p2p_group_formation = NULL;
4626
4627         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4628                 (int) wpa_s->assoc_freq;
4629         if (ssid->passphrase == NULL && ssid->psk_set) {
4630                 char psk[65];
4631                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4632                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4633                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4634                         MACSTR "%s",
4635                         wpa_s->ifname, ssid_txt, freq, psk,
4636                         MAC2STR(go_dev_addr),
4637                         persistent ? " [PERSISTENT]" : "");
4638         } else {
4639                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4640                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4641                         "go_dev_addr=" MACSTR "%s",
4642                         wpa_s->ifname, ssid_txt, freq,
4643                         ssid->passphrase ? ssid->passphrase : "",
4644                         MAC2STR(go_dev_addr),
4645                         persistent ? " [PERSISTENT]" : "");
4646         }
4647
4648         if (persistent)
4649                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4650                                                              ssid, go_dev_addr);
4651         if (network_id < 0)
4652                 network_id = ssid->id;
4653         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4654
4655 done:
4656         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4657             wpa_s->global->p2p != NULL) {
4658                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4659                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4660                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4661                                 "continued after successful connection");
4662                         p2p_increase_search_delay(
4663                                 wpa_s->global->p2p,
4664                                 wpas_p2p_search_delay(wpa_s));
4665                 }
4666         }
4667 }
4668
4669
4670 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4671                           u32 interval1, u32 duration2, u32 interval2)
4672 {
4673         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4674                 return -1;
4675         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4676                 return -1;
4677
4678         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4679             wpa_s->current_ssid == NULL ||
4680             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4681                 return -1;
4682
4683         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4684                                 wpa_s->own_addr, wpa_s->assoc_freq,
4685                                 duration1, interval1, duration2, interval2);
4686 }
4687
4688
4689 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4690                         unsigned int interval)
4691 {
4692         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4693                 return -1;
4694
4695         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4696                 return -1;
4697
4698         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4699 }
4700
4701
4702 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4703 {
4704         return wpa_s->current_ssid != NULL &&
4705                 wpa_s->current_ssid->p2p_group &&
4706                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4707 }
4708
4709
4710 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4711 {
4712         struct wpa_supplicant *wpa_s = eloop_ctx;
4713
4714         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4715                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4716                            "disabled");
4717                 return;
4718         }
4719
4720         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4721                    "group");
4722         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4723 }
4724
4725
4726 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4727 {
4728         int timeout;
4729
4730         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4731                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4732
4733         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4734                 return;
4735
4736         timeout = wpa_s->conf->p2p_group_idle;
4737         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4738             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4739             timeout = P2P_MAX_CLIENT_IDLE;
4740
4741         if (timeout == 0)
4742                 return;
4743
4744         if (timeout < 0) {
4745                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4746                         timeout = 0; /* special client mode no-timeout */
4747                 else
4748                         return;
4749         }
4750
4751         if (wpa_s->p2p_in_provisioning) {
4752                 /*
4753                  * Use the normal group formation timeout during the
4754                  * provisioning phase to avoid terminating this process too
4755                  * early due to group idle timeout.
4756                  */
4757                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4758                            "during provisioning");
4759                 return;
4760         }
4761 #ifndef ANDROID_P2P
4762         if (wpa_s->show_group_started) {
4763                 /*
4764                  * Use the normal group formation timeout between the end of
4765                  * the provisioning phase and completion of 4-way handshake to
4766                  * avoid terminating this process too early due to group idle
4767                  * timeout.
4768                  */
4769                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4770                            "while waiting for initial 4-way handshake to "
4771                            "complete");
4772                 return;
4773         }
4774 #endif
4775
4776         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4777                    timeout);
4778         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4779                                wpa_s, NULL);
4780 }
4781
4782
4783 /* Returns 1 if the interface was removed */
4784 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4785                           u16 reason_code, const u8 *ie, size_t ie_len,
4786                           int locally_generated)
4787 {
4788         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4789                 return 0;
4790         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4791                 return 0;
4792
4793         if (!locally_generated)
4794                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4795                                  ie_len);
4796
4797         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4798             wpa_s->current_ssid &&
4799             wpa_s->current_ssid->p2p_group &&
4800             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4801                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4802                            "session is ending");
4803                 if (wpas_p2p_group_delete(wpa_s,
4804                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4805                     > 0)
4806                         return 1;
4807         }
4808
4809         return 0;
4810 }
4811
4812
4813 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4814                              u16 reason_code, const u8 *ie, size_t ie_len,
4815                              int locally_generated)
4816 {
4817         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4818                 return;
4819         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4820                 return;
4821
4822         if (!locally_generated)
4823                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4824                                    ie_len);
4825 }
4826
4827
4828 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4829 {
4830         struct p2p_data *p2p = wpa_s->global->p2p;
4831
4832         if (p2p == NULL)
4833                 return;
4834
4835         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4836                 return;
4837
4838         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4839                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4840
4841         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4842                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4843
4844         if (wpa_s->wps &&
4845             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4846                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4847
4848         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4849                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4850
4851         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4852                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4853                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4854                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4855                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4856         }
4857
4858         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4859                 p2p_set_sec_dev_types(p2p,
4860                                       (void *) wpa_s->conf->sec_device_type,
4861                                       wpa_s->conf->num_sec_device_types);
4862
4863         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4864                 int i;
4865                 p2p_remove_wps_vendor_extensions(p2p);
4866                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4867                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4868                                 continue;
4869                         p2p_add_wps_vendor_extension(
4870                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4871                 }
4872         }
4873
4874         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4875             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4876                 char country[3];
4877                 country[0] = wpa_s->conf->country[0];
4878                 country[1] = wpa_s->conf->country[1];
4879                 country[2] = 0x04;
4880                 p2p_set_country(p2p, country);
4881         }
4882
4883         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4884                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4885                                      wpa_s->conf->p2p_ssid_postfix ?
4886                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4887                                      0);
4888         }
4889
4890         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4891                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4892
4893         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4894                 u8 reg_class, channel;
4895                 int ret;
4896                 unsigned int r;
4897                 if (wpa_s->conf->p2p_listen_reg_class &&
4898                     wpa_s->conf->p2p_listen_channel) {
4899                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4900                         channel = wpa_s->conf->p2p_listen_channel;
4901                 } else {
4902                         reg_class = 81;
4903                         /*
4904                          * Pick one of the social channels randomly as the
4905                          * listen channel.
4906                          */
4907                         os_get_random((u8 *) &r, sizeof(r));
4908                         channel = 1 + (r % 3) * 5;
4909                 }
4910                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4911                 if (ret)
4912                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4913                                    "failed: %d", ret);
4914         }
4915         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4916                 u8 op_reg_class, op_channel, cfg_op_channel;
4917                 int ret = 0;
4918                 unsigned int r;
4919                 if (wpa_s->conf->p2p_oper_reg_class &&
4920                     wpa_s->conf->p2p_oper_channel) {
4921                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4922                         op_channel = wpa_s->conf->p2p_oper_channel;
4923                         cfg_op_channel = 1;
4924                 } else {
4925                         op_reg_class = 81;
4926                         /*
4927                          * Use random operation channel from (1, 6, 11)
4928                          *if no other preference is indicated.
4929                          */
4930                         os_get_random((u8 *) &r, sizeof(r));
4931                         op_channel = 1 + (r % 3) * 5;
4932                         cfg_op_channel = 0;
4933                 }
4934                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4935                                            cfg_op_channel);
4936                 if (ret)
4937                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4938                                    "failed: %d", ret);
4939         }
4940
4941         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4942                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4943                                       wpa_s->conf->p2p_pref_chan) < 0) {
4944                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4945                                    "update failed");
4946                 }
4947         }
4948 }
4949
4950
4951 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4952                      int duration)
4953 {
4954         if (!wpa_s->ap_iface)
4955                 return -1;
4956         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4957                                    duration);
4958 }
4959
4960
4961 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4962 {
4963         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4964                 return -1;
4965         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4966                 return -1;
4967
4968         wpa_s->global->cross_connection = enabled;
4969         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4970
4971         if (!enabled) {
4972                 struct wpa_supplicant *iface;
4973
4974                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4975                 {
4976                         if (iface->cross_connect_enabled == 0)
4977                                 continue;
4978
4979                         iface->cross_connect_enabled = 0;
4980                         iface->cross_connect_in_use = 0;
4981                         wpa_msg(iface->parent, MSG_INFO,
4982                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4983                                 iface->ifname, iface->cross_connect_uplink);
4984                 }
4985         }
4986
4987         return 0;
4988 }
4989
4990
4991 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4992 {
4993         struct wpa_supplicant *iface;
4994
4995         if (!uplink->global->cross_connection)
4996                 return;
4997
4998         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4999                 if (!iface->cross_connect_enabled)
5000                         continue;
5001                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5002                     0)
5003                         continue;
5004                 if (iface->ap_iface == NULL)
5005                         continue;
5006                 if (iface->cross_connect_in_use)
5007                         continue;
5008
5009                 iface->cross_connect_in_use = 1;
5010                 wpa_msg(iface->parent, MSG_INFO,
5011                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5012                         iface->ifname, iface->cross_connect_uplink);
5013         }
5014 }
5015
5016
5017 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5018 {
5019         struct wpa_supplicant *iface;
5020
5021         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5022                 if (!iface->cross_connect_enabled)
5023                         continue;
5024                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5025                     0)
5026                         continue;
5027                 if (!iface->cross_connect_in_use)
5028                         continue;
5029
5030                 wpa_msg(iface->parent, MSG_INFO,
5031                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5032                         iface->ifname, iface->cross_connect_uplink);
5033                 iface->cross_connect_in_use = 0;
5034         }
5035 }
5036
5037
5038 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5039 {
5040         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5041             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5042             wpa_s->cross_connect_disallowed)
5043                 wpas_p2p_disable_cross_connect(wpa_s);
5044         else
5045                 wpas_p2p_enable_cross_connect(wpa_s);
5046         if (!wpa_s->ap_iface &&
5047             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5048                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5049 }
5050
5051
5052 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5053 {
5054         wpas_p2p_disable_cross_connect(wpa_s);
5055         if (!wpa_s->ap_iface &&
5056             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5057                                          wpa_s, NULL))
5058                 wpas_p2p_set_group_idle_timeout(wpa_s);
5059 }
5060
5061
5062 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5063 {
5064         struct wpa_supplicant *iface;
5065
5066         if (!wpa_s->global->cross_connection)
5067                 return;
5068
5069         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5070                 if (iface == wpa_s)
5071                         continue;
5072                 if (iface->drv_flags &
5073                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5074                         continue;
5075                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5076                         continue;
5077
5078                 wpa_s->cross_connect_enabled = 1;
5079                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5080                            sizeof(wpa_s->cross_connect_uplink));
5081                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5082                            "%s to %s whenever uplink is available",
5083                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5084
5085                 if (iface->ap_iface || iface->current_ssid == NULL ||
5086                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5087                     iface->cross_connect_disallowed ||
5088                     iface->wpa_state != WPA_COMPLETED)
5089                         break;
5090
5091                 wpa_s->cross_connect_in_use = 1;
5092                 wpa_msg(wpa_s->parent, MSG_INFO,
5093                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5094                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5095                 break;
5096         }
5097 }
5098
5099
5100 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5101 {
5102         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5103             !wpa_s->p2p_in_provisioning)
5104                 return 0; /* not P2P client operation */
5105
5106         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5107                    "session overlap");
5108         if (wpa_s != wpa_s->parent)
5109                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5110
5111         if (wpa_s->global->p2p)
5112                 p2p_group_formation_failed(wpa_s->global->p2p);
5113
5114         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5115                              wpa_s->parent, NULL);
5116
5117         wpas_group_formation_completed(wpa_s, 0);
5118         return 1;
5119 }
5120
5121
5122 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5123 {
5124         struct p2p_channels chan;
5125
5126         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5127                 return;
5128
5129         os_memset(&chan, 0, sizeof(chan));
5130         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5131                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5132                            "channel list");
5133                 return;
5134         }
5135
5136         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5137 }
5138
5139
5140 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5141 {
5142         struct wpa_global *global = wpa_s->global;
5143         int found = 0;
5144         const u8 *peer;
5145
5146         if (global->p2p == NULL)
5147                 return -1;
5148
5149         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5150
5151         if (wpa_s->pending_interface_name[0] &&
5152             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5153                 found = 1;
5154
5155         peer = p2p_get_go_neg_peer(global->p2p);
5156         if (peer) {
5157                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5158                            MACSTR, MAC2STR(peer));
5159                 p2p_unauthorize(global->p2p, peer);
5160                 found = 1;
5161         }
5162
5163         wpas_p2p_stop_find(wpa_s);
5164
5165         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5166                 if (wpa_s == global->p2p_group_formation &&
5167                     (wpa_s->p2p_in_provisioning ||
5168                      wpa_s->parent->pending_interface_type ==
5169                      WPA_IF_P2P_CLIENT)) {
5170                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5171                                    "formation found - cancelling",
5172                                    wpa_s->ifname);
5173                         found = 1;
5174                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5175                                              wpa_s->parent, NULL);
5176                         wpas_p2p_group_delete(wpa_s,
5177                                               P2P_GROUP_REMOVAL_REQUESTED);
5178                         break;
5179                 }
5180         }
5181
5182         if (!found) {
5183                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5184                 return -1;
5185         }
5186
5187         return 0;
5188 }
5189
5190
5191 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5192 {
5193         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5194                 return;
5195
5196         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5197                    "being available anymore");
5198         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5199 }
5200
5201
5202 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5203                                    int freq_24, int freq_5, int freq_overall)
5204 {
5205         struct p2p_data *p2p = wpa_s->global->p2p;
5206         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5207                 return;
5208         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5209 }
5210
5211
5212 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5213 {
5214         u8 peer[ETH_ALEN];
5215         struct p2p_data *p2p = wpa_s->global->p2p;
5216
5217         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5218                 return -1;
5219
5220         if (hwaddr_aton(addr, peer))
5221                 return -1;
5222
5223         return p2p_unauthorize(p2p, peer);
5224 }
5225
5226
5227 /**
5228  * wpas_p2p_disconnect - Disconnect from a P2P Group
5229  * @wpa_s: Pointer to wpa_supplicant data
5230  * Returns: 0 on success, -1 on failure
5231  *
5232  * This can be used to disconnect from a group in which the local end is a P2P
5233  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5234  * virtual network interface was created for this group, that interface will be
5235  * removed. Otherwise, only the configured P2P group network will be removed
5236  * from the interface.
5237  */
5238 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5239 {
5240
5241         if (wpa_s == NULL)
5242                 return -1;
5243
5244         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5245                 -1 : 0;
5246 }
5247
5248
5249 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5250 {
5251         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5252                 return 0;
5253
5254         return p2p_in_progress(wpa_s->global->p2p);
5255 }
5256
5257
5258 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5259                               struct wpa_ssid *ssid)
5260 {
5261         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5262             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5263                                  wpa_s->parent, NULL) > 0) {
5264                 /**
5265                  * Remove the network by scheduling the group formation
5266                  * timeout to happen immediately. The teardown code
5267                  * needs to be scheduled to run asynch later so that we
5268                  * don't delete data from under ourselves unexpectedly.
5269                  * Calling wpas_p2p_group_formation_timeout directly
5270                  * causes a series of crashes in WPS failure scenarios.
5271                  */
5272                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5273                            "P2P group network getting removed");
5274                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5275                                        wpa_s->parent, NULL);
5276         }
5277 }
5278
5279
5280 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5281                                           const u8 *addr, const u8 *ssid,
5282                                           size_t ssid_len)
5283 {
5284         struct wpa_ssid *s;
5285         size_t i;
5286
5287         for (s = wpa_s->conf->ssid; s; s = s->next) {
5288                 if (s->disabled != 2)
5289                         continue;
5290                 if (ssid &&
5291                     (ssid_len != s->ssid_len ||
5292                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5293                         continue;
5294                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5295                         return s; /* peer is GO in the persistent group */
5296                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5297                         continue;
5298                 for (i = 0; i < s->num_p2p_clients; i++) {
5299                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5300                                       addr, ETH_ALEN) == 0)
5301                                 return s; /* peer is P2P client in persistent
5302                                            * group */
5303                 }
5304         }
5305
5306         return NULL;
5307 }
5308
5309
5310 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5311                                        const u8 *addr)
5312 {
5313         if (addr == NULL)
5314                 return;
5315         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5316 }
5317
5318
5319 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5320                                         int group_added)
5321 {
5322         struct wpa_supplicant *group = wpa_s;
5323         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5324         if (wpa_s->global->p2p_group_formation)
5325                 group = wpa_s->global->p2p_group_formation;
5326         wpa_s = wpa_s->parent;
5327         offchannel_send_action_done(wpa_s);
5328         if (group_added)
5329                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5330         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5331         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5332                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5333                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5334                          wpa_s->p2p_persistent_id,
5335                          wpa_s->p2p_pd_before_go_neg,
5336                          wpa_s->p2p_go_ht40);
5337 }
5338
5339
5340 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5341 {
5342         if (!wpa_s->p2p_fallback_to_go_neg ||
5343             wpa_s->p2p_in_provisioning <= 5)
5344                 return 0;
5345
5346         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5347                 return 0; /* peer operating as a GO */
5348
5349         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5350                 "fallback to GO Negotiation");
5351         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5352
5353         return 1;
5354 }
5355
5356
5357 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5358 {
5359         const char *rn, *rn2;
5360         struct wpa_supplicant *ifs;
5361
5362         if (wpa_s->wpa_state > WPA_SCANNING) {
5363                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5364                         "concurrent operation",
5365                         P2P_CONCURRENT_SEARCH_DELAY);
5366                 return P2P_CONCURRENT_SEARCH_DELAY;
5367         }
5368
5369         if (!wpa_s->driver->get_radio_name)
5370                 return 0;
5371         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5372         if (rn == NULL || rn[0] == '\0')
5373                 return 0;
5374
5375         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5376                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5377                         continue;
5378
5379                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5380                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5381                         continue;
5382                 if (ifs->wpa_state > WPA_SCANNING) {
5383                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5384                                 "delay due to concurrent operation on "
5385                                 "interface %s",
5386                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5387                         return P2P_CONCURRENT_SEARCH_DELAY;
5388                 }
5389         }
5390
5391         return 0;
5392 }
5393
5394 #ifdef ANDROID_P2P
5395 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5396 {
5397         struct wpa_supplicant *iface = NULL;
5398         struct p2p_data *p2p = wpa_s->global->p2p;
5399
5400         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5401                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5402                         (iface->current_ssid->frequency != freq)) {
5403
5404                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5405                                         /* Try to see whether we can move the GO. If it
5406                                          * is not possible, remove the GO interface
5407                                          */
5408                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5409                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5410                                                         iface->current_ssid->frequency = freq;
5411                                                         continue;
5412                                         }
5413                         }
5414
5415                         /* If GO cannot be moved or if the conflicting interface is a
5416                          * P2P Client, remove the interface depending up on the connection
5417                          * priority */
5418                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5419                                 /* STA connection has priority over existing
5420                                  * P2P connection. So remove the interface */
5421                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5422                                                 "concurrent mode frequency conflict");
5423                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5424                         } else {
5425                                 /* Existing connection has the priority. Disable the newly
5426                  * selected network and let the application know about it.
5427                                  */
5428                                 return -1;
5429                         }
5430                 }
5431         }
5432         return 0;
5433 }
5434 #endif