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 or a
 271                  * P2P group that is trying to reconnect.
 272                  */
 273                 ssid = wpa_s->conf->ssid;
 274                 while (ssid) {
 275                         if (ssid->p2p_group && ssid->disabled != 2)
 276                                 break;
 277                         ssid = ssid->next;
 278                 }
 279                 if (ssid == NULL &&
 280                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 281                 {
 282                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 283                                    "not found");
 284                         return -1;
 285                 }
 286         }
 287         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 288                 gtype = "GO";
 289         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 290                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 291                 wpa_s->reassociate = 0;
 292                 wpa_s->disconnected = 1;
 293                 wpa_supplicant_deauthenticate(wpa_s,
 294                                               WLAN_REASON_DEAUTH_LEAVING);
 295                 gtype = "client";
 296         } else
 297                 gtype = "GO";
 298         if (wpa_s->cross_connect_in_use) {
 299                 wpa_s->cross_connect_in_use = 0;
 300                 wpa_msg(wpa_s->parent, MSG_INFO,
 301                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 302                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 303         }
 304         switch (removal_reason) {
 305         case P2P_GROUP_REMOVAL_REQUESTED:
 306                 reason = " reason=REQUESTED";
 307                 break;
 308         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 309                 reason = " reason=FORMATION_FAILED";
 310                 break;
 311         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 312                 reason = " reason=IDLE";
 313                 break;
 314         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 315                 reason = " reason=UNAVAILABLE";
 316                 break;
 317         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 318                 reason = " reason=GO_ENDING_SESSION";
 319                 break;
 320 #ifdef ANDROID_P2P
 321         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 322                 reason = " reason=FREQ_CONFLICT";
 323                 break;
 324 #endif
 325         default:
 326                 reason = "";
 327                 break;
 328         }
 329         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 330                 wpa_msg(wpa_s->parent, MSG_INFO,
 331                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 332                         wpa_s->ifname, gtype, reason);
 333         }
 334
 335         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 336                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 337
 338         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 339                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 340
 341         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 342                 struct wpa_global *global;
 343                 char *ifname;
 344                 enum wpa_driver_if_type type;
 345                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 346                         wpa_s->ifname);
 347                 global = wpa_s->global;
 348                 ifname = os_strdup(wpa_s->ifname);
 349                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 350                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 351                 wpa_s = global->ifaces;
 352                 if (wpa_s && ifname)
 353                         wpa_drv_if_remove(wpa_s, type, ifname);
 354                 os_free(ifname);
 355                 return 1;
 356         }
 357
 358         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 359         if (ssid && (ssid->p2p_group ||
 360                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 361                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 362                 int id = ssid->id;
 363                 if (ssid == wpa_s->current_ssid) {
 364                         wpa_sm_set_config(wpa_s->wpa, NULL);
 365                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 366                         wpa_s->current_ssid = NULL;
 367                 }
 368                 /*
 369                  * Networks objects created during any P2P activities are not
 370                  * exposed out as they might/will confuse certain non-P2P aware
 371                  * applications since these network objects won't behave like
 372                  * regular ones.
 373                  *
 374                  * Likewise, we don't send out network removed signals for such
 375                  * network objects.
 376                  */
 377                 wpa_config_remove_network(wpa_s->conf, id);
 378                 wpa_supplicant_clear_status(wpa_s);
 379                 wpa_supplicant_cancel_sched_scan(wpa_s);
 380                 wpa_s->sta_scan_pending = 0;
 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         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 877         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 878                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 879                         "results");
 880                 return;
 881         }
 882
 883         ssid = wpa_config_add_network(wpa_s->conf);
 884         if (ssid == NULL) {
 885                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 886                 return;
 887         }
 888
 889         wpa_s->show_group_started = 0;
 890
 891         wpa_config_set_network_defaults(ssid);
 892         ssid->temporary = 1;
 893         ssid->p2p_group = 1;
 894         ssid->p2p_persistent_group = params->persistent_group;
 895         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 896                 WPAS_MODE_P2P_GO;
 897         ssid->frequency = params->freq;
 898         ssid->ht40 = params->ht40;
 899         ssid->ssid = os_zalloc(params->ssid_len + 1);
 900         if (ssid->ssid) {
 901                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 902                 ssid->ssid_len = params->ssid_len;
 903         }
 904         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 905         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 906         ssid->proto = WPA_PROTO_RSN;
 907         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 908         ssid->passphrase = os_strdup(params->passphrase);
 909         if (ssid->passphrase == NULL) {
 910                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy passphrase for "
 911                         "GO");
 912                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 913                 return;
 914         }
 915         wpa_config_update_psk(ssid);
 916         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 917
 918         wpa_s->ap_configured_cb = p2p_go_configured;
 919         wpa_s->ap_configured_cb_ctx = wpa_s;
 920         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 921         wpa_s->connect_without_scan = ssid;
 922         wpa_s->reassociate = 1;
 923         wpa_s->disconnected = 0;
 924         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 925                 "start GO)");
 926         wpa_supplicant_req_scan(wpa_s, 0, 0);
 927 }
 928
 929
 930 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 931                                   const struct wpa_supplicant *src)
 932 {
 933         struct wpa_config *d;
 934         const struct wpa_config *s;
 935
 936         d = dst->conf;
 937         s = src->conf;
 938
 939 #define C(n) if (s->n) d->n = os_strdup(s->n)
 940         C(device_name);
 941         C(manufacturer);
 942         C(model_name);
 943         C(model_number);
 944         C(serial_number);
 945         C(config_methods);
 946 #undef C
 947
 948         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 949         os_memcpy(d->sec_device_type, s->sec_device_type,
 950                   sizeof(d->sec_device_type));
 951         d->num_sec_device_types = s->num_sec_device_types;
 952
 953         d->p2p_group_idle = s->p2p_group_idle;
 954         d->p2p_intra_bss = s->p2p_intra_bss;
 955         d->persistent_reconnect = s->persistent_reconnect;
 956         d->max_num_sta = s->max_num_sta;
 957         d->pbc_in_m1 = s->pbc_in_m1;
 958 }
 959
 960
 961 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 962                                         enum wpa_driver_if_type type)
 963 {
 964         char ifname[120], force_ifname[120];
 965
 966         if (wpa_s->pending_interface_name[0]) {
 967                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 968                            "- skip creation of a new one");
 969                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 970                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 971                                    "unknown?! ifname='%s'",
 972                                    wpa_s->pending_interface_name);
 973                         return -1;
 974                 }
 975                 return 0;
 976         }
 977
 978         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 979                     wpa_s->p2p_group_idx);
 980         if (os_strlen(ifname) >= IFNAMSIZ &&
 981             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 982                 /* Try to avoid going over the IFNAMSIZ length limit */
 983                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 984                             wpa_s->p2p_group_idx);
 985         }
 986         force_ifname[0] = '\0';
 987
 988         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 989                    ifname);
 990         wpa_s->p2p_group_idx++;
 991
 992         wpa_s->pending_interface_type = type;
 993         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 994                            wpa_s->pending_interface_addr, NULL) < 0) {
 995                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 996                            "interface");
 997                 return -1;
 998         }
 999
1000         if (force_ifname[0]) {
1001                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1002                            force_ifname);
1003                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1004                            sizeof(wpa_s->pending_interface_name));
1005         } else
1006                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1007                            sizeof(wpa_s->pending_interface_name));
1008         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1009                    MACSTR, wpa_s->pending_interface_name,
1010                    MAC2STR(wpa_s->pending_interface_addr));
1011
1012         return 0;
1013 }
1014
1015
1016 static void wpas_p2p_remove_pending_group_interface(
1017         struct wpa_supplicant *wpa_s)
1018 {
1019         if (!wpa_s->pending_interface_name[0] ||
1020             is_zero_ether_addr(wpa_s->pending_interface_addr))
1021                 return; /* No pending virtual interface */
1022
1023         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1024                    wpa_s->pending_interface_name);
1025         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1026                           wpa_s->pending_interface_name);
1027         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1028         wpa_s->pending_interface_name[0] = '\0';
1029 }
1030
1031
1032 static struct wpa_supplicant *
1033 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1034 {
1035         struct wpa_interface iface;
1036         struct wpa_supplicant *group_wpa_s;
1037
1038         if (!wpa_s->pending_interface_name[0]) {
1039                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1040                 if (!wpas_p2p_create_iface(wpa_s))
1041                         return NULL;
1042                 /*
1043                  * Something has forced us to remove the pending interface; try
1044                  * to create a new one and hope for the best that we will get
1045                  * the same local address.
1046                  */
1047                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1048                                                  WPA_IF_P2P_CLIENT) < 0)
1049                         return NULL;
1050         }
1051
1052         os_memset(&iface, 0, sizeof(iface));
1053         iface.ifname = wpa_s->pending_interface_name;
1054         iface.driver = wpa_s->driver->name;
1055         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1056         iface.driver_param = wpa_s->conf->driver_param;
1057         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1058         if (group_wpa_s == NULL) {
1059                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1060                            "wpa_supplicant interface");
1061                 return NULL;
1062         }
1063         wpa_s->pending_interface_name[0] = '\0';
1064         group_wpa_s->parent = wpa_s;
1065         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1066                 P2P_GROUP_INTERFACE_CLIENT;
1067         wpa_s->global->p2p_group_formation = group_wpa_s;
1068
1069         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1070
1071         return group_wpa_s;
1072 }
1073
1074
1075 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1076                                              void *timeout_ctx)
1077 {
1078         struct wpa_supplicant *wpa_s = eloop_ctx;
1079         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1080         if (wpa_s->global->p2p)
1081                 p2p_group_formation_failed(wpa_s->global->p2p);
1082         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1083                 wpa_drv_p2p_group_formation_failed(wpa_s);
1084         wpas_group_formation_completed(wpa_s, 0);
1085 }
1086
1087
1088 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1089 {
1090         struct wpa_supplicant *wpa_s = ctx;
1091
1092         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1093                 wpa_drv_cancel_remain_on_channel(wpa_s);
1094                 wpa_s->off_channel_freq = 0;
1095                 wpa_s->roc_waiting_drv_freq = 0;
1096         }
1097
1098         if (res->status) {
1099                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1100                         res->status);
1101                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1102                 wpas_p2p_remove_pending_group_interface(wpa_s);
1103                 return;
1104         }
1105
1106         if (wpa_s->p2p_go_ht40)
1107                 res->ht40 = 1;
1108
1109         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1110         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1111
1112         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1113                 struct wpa_ssid *ssid;
1114                 ssid = wpa_config_get_network(wpa_s->conf,
1115                                               wpa_s->p2p_persistent_id);
1116                 if (ssid && ssid->disabled == 2 &&
1117                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1118                         size_t len = os_strlen(ssid->passphrase);
1119                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1120                                    "on requested persistent group");
1121                         os_memcpy(res->passphrase, ssid->passphrase, len);
1122                         res->passphrase[len] = '\0';
1123                 }
1124         }
1125
1126         if (wpa_s->create_p2p_iface) {
1127                 struct wpa_supplicant *group_wpa_s =
1128                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1129                 if (group_wpa_s == NULL) {
1130                         wpas_p2p_remove_pending_group_interface(wpa_s);
1131                         return;
1132                 }
1133                 if (group_wpa_s != wpa_s) {
1134                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1135                                   sizeof(group_wpa_s->p2p_pin));
1136                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1137                 }
1138                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1139                 wpa_s->pending_interface_name[0] = '\0';
1140                 group_wpa_s->p2p_in_provisioning = 1;
1141
1142                 if (res->role_go)
1143                         wpas_start_wps_go(group_wpa_s, res, 1);
1144                 else
1145                         wpas_start_wps_enrollee(group_wpa_s, res);
1146         } else {
1147                 wpa_s->p2p_in_provisioning = 1;
1148                 wpa_s->global->p2p_group_formation = wpa_s;
1149
1150                 if (res->role_go)
1151                         wpas_start_wps_go(wpa_s, res, 1);
1152                 else
1153                         wpas_start_wps_enrollee(ctx, res);
1154         }
1155
1156         wpa_s->p2p_long_listen = 0;
1157         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1158
1159         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1160         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1161                                (res->peer_config_timeout % 100) * 10000,
1162                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1163 }
1164
1165
1166 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1167 {
1168         struct wpa_supplicant *wpa_s = ctx;
1169         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1170                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1171
1172         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1173 }
1174
1175
1176 void wpas_dev_found(void *ctx, const u8 *addr,
1177                     const struct p2p_peer_info *info,
1178                     int new_device)
1179 {
1180 #ifndef CONFIG_NO_STDOUT_DEBUG
1181         struct wpa_supplicant *wpa_s = ctx;
1182         char devtype[WPS_DEV_TYPE_BUFSIZE];
1183 #define WFD_DEV_INFO_SIZE 9
1184         char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1];
1185         os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex));
1186 #ifdef CONFIG_WIFI_DISPLAY
1187         if (info->wfd_subelems) {
1188                 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex),
1189                                         wpabuf_head(info->wfd_subelems),
1190                                         WFD_DEV_INFO_SIZE);
1191         }
1192 #endif /* CONFIG_WIFI_DISPLAY */
1193         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1194                 " p2p_dev_addr=" MACSTR
1195                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1196                 "dev_capab=0x%x group_capab=0x%x%s%s",
1197                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1198                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1199                                      sizeof(devtype)),
1200                 info->device_name, info->config_methods,
1201                 info->dev_capab, info->group_capab,
1202                 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex);
1203 #endif /* CONFIG_NO_STDOUT_DEBUG */
1204
1205         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1206 }
1207
1208
1209 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1210 {
1211         struct wpa_supplicant *wpa_s = ctx;
1212
1213         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1214                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1215
1216         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1217 }
1218
1219
1220 static int wpas_start_listen(void *ctx, unsigned int freq,
1221                              unsigned int duration,
1222                              const struct wpabuf *probe_resp_ie)
1223 {
1224         struct wpa_supplicant *wpa_s = ctx;
1225
1226         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1227
1228         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1229                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1230                            "report received Probe Request frames");
1231                 return -1;
1232         }
1233
1234         wpa_s->pending_listen_freq = freq;
1235         wpa_s->pending_listen_duration = duration;
1236
1237         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1238                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1239                            "to remain on channel (%u MHz) for Listen "
1240                            "state", freq);
1241                 wpa_s->pending_listen_freq = 0;
1242                 return -1;
1243         }
1244         wpa_s->off_channel_freq = 0;
1245         wpa_s->roc_waiting_drv_freq = freq;
1246
1247         return 0;
1248 }
1249
1250
1251 static void wpas_stop_listen(void *ctx)
1252 {
1253         struct wpa_supplicant *wpa_s = ctx;
1254         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1255                 wpa_drv_cancel_remain_on_channel(wpa_s);
1256                 wpa_s->off_channel_freq = 0;
1257                 wpa_s->roc_waiting_drv_freq = 0;
1258         }
1259         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1260         wpa_drv_probe_req_report(wpa_s, 0);
1261 }
1262
1263
1264 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1265 {
1266         struct wpa_supplicant *wpa_s = ctx;
1267         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1268 }
1269
1270
1271 static struct p2p_srv_bonjour *
1272 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1273                              const struct wpabuf *query)
1274 {
1275         struct p2p_srv_bonjour *bsrv;
1276         size_t len;
1277
1278         len = wpabuf_len(query);
1279         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1280                          struct p2p_srv_bonjour, list) {
1281                 if (len == wpabuf_len(bsrv->query) &&
1282                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1283                               len) == 0)
1284                         return bsrv;
1285         }
1286         return NULL;
1287 }
1288
1289
1290 static struct p2p_srv_upnp *
1291 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1292                           const char *service)
1293 {
1294         struct p2p_srv_upnp *usrv;
1295
1296         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1297                          struct p2p_srv_upnp, list) {
1298                 if (version == usrv->version &&
1299                     os_strcmp(service, usrv->service) == 0)
1300                         return usrv;
1301         }
1302         return NULL;
1303 }
1304
1305
1306 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1307                                         u8 srv_trans_id)
1308 {
1309         u8 *len_pos;
1310
1311         if (wpabuf_tailroom(resp) < 5)
1312                 return;
1313
1314         /* Length (to be filled) */
1315         len_pos = wpabuf_put(resp, 2);
1316         wpabuf_put_u8(resp, srv_proto);
1317         wpabuf_put_u8(resp, srv_trans_id);
1318         /* Status Code */
1319         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1320         /* Response Data: empty */
1321         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1322 }
1323
1324
1325 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1326                                 struct wpabuf *resp, u8 srv_trans_id)
1327 {
1328         struct p2p_srv_bonjour *bsrv;
1329         u8 *len_pos;
1330
1331         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1332
1333         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1334                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1335                 return;
1336         }
1337
1338         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1339                          struct p2p_srv_bonjour, list) {
1340                 if (wpabuf_tailroom(resp) <
1341                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1342                         return;
1343                 /* Length (to be filled) */
1344                 len_pos = wpabuf_put(resp, 2);
1345                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1346                 wpabuf_put_u8(resp, srv_trans_id);
1347                 /* Status Code */
1348                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1349                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1350                                   wpabuf_head(bsrv->resp),
1351                                   wpabuf_len(bsrv->resp));
1352                 /* Response Data */
1353                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1354                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1355                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1356                              2);
1357         }
1358 }
1359
1360
1361 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1362                                 struct wpabuf *resp, u8 srv_trans_id,
1363                                 const u8 *query, size_t query_len)
1364 {
1365         struct p2p_srv_bonjour *bsrv;
1366         struct wpabuf buf;
1367         u8 *len_pos;
1368
1369         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1370                           query, query_len);
1371         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1372                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1373                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1374                                             srv_trans_id);
1375                 return;
1376         }
1377
1378         if (query_len == 0) {
1379                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1380                 return;
1381         }
1382
1383         if (wpabuf_tailroom(resp) < 5)
1384                 return;
1385         /* Length (to be filled) */
1386         len_pos = wpabuf_put(resp, 2);
1387         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1388         wpabuf_put_u8(resp, srv_trans_id);
1389
1390         wpabuf_set(&buf, query, query_len);
1391         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1392         if (bsrv == NULL) {
1393                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1394                            "available");
1395
1396                 /* Status Code */
1397                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1398                 /* Response Data: empty */
1399                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1400                              2);
1401                 return;
1402         }
1403
1404         /* Status Code */
1405         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1406         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1407                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1408
1409         if (wpabuf_tailroom(resp) >=
1410             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1411                 /* Response Data */
1412                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1413                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1414         }
1415         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1416 }
1417
1418
1419 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1420                              struct wpabuf *resp, u8 srv_trans_id)
1421 {
1422         struct p2p_srv_upnp *usrv;
1423         u8 *len_pos;
1424
1425         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1426
1427         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1428                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1429                 return;
1430         }
1431
1432         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1433                          struct p2p_srv_upnp, list) {
1434                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1435                         return;
1436
1437                 /* Length (to be filled) */
1438                 len_pos = wpabuf_put(resp, 2);
1439                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1440                 wpabuf_put_u8(resp, srv_trans_id);
1441
1442                 /* Status Code */
1443                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1444                 /* Response Data */
1445                 wpabuf_put_u8(resp, usrv->version);
1446                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1447                            usrv->service);
1448                 wpabuf_put_str(resp, usrv->service);
1449                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1450                              2);
1451         }
1452 }
1453
1454
1455 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1456                              struct wpabuf *resp, u8 srv_trans_id,
1457                              const u8 *query, size_t query_len)
1458 {
1459         struct p2p_srv_upnp *usrv;
1460         u8 *len_pos;
1461         u8 version;
1462         char *str;
1463         int count = 0;
1464
1465         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1466                           query, query_len);
1467
1468         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1469                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1470                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1471                                             srv_trans_id);
1472                 return;
1473         }
1474
1475         if (query_len == 0) {
1476                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1477                 return;
1478         }
1479
1480         if (wpabuf_tailroom(resp) < 5)
1481                 return;
1482
1483         /* Length (to be filled) */
1484         len_pos = wpabuf_put(resp, 2);
1485         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1486         wpabuf_put_u8(resp, srv_trans_id);
1487
1488         version = query[0];
1489         str = os_malloc(query_len);
1490         if (str == NULL)
1491                 return;
1492         os_memcpy(str, query + 1, query_len - 1);
1493         str[query_len - 1] = '\0';
1494
1495         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1496                          struct p2p_srv_upnp, list) {
1497                 if (version != usrv->version)
1498                         continue;
1499
1500                 if (os_strcmp(str, "ssdp:all") != 0 &&
1501                     os_strstr(usrv->service, str) == NULL)
1502                         continue;
1503
1504                 if (wpabuf_tailroom(resp) < 2)
1505                         break;
1506                 if (count == 0) {
1507                         /* Status Code */
1508                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1509                         /* Response Data */
1510                         wpabuf_put_u8(resp, version);
1511                 } else
1512                         wpabuf_put_u8(resp, ',');
1513
1514                 count++;
1515
1516                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1517                            usrv->service);
1518                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1519                         break;
1520                 wpabuf_put_str(resp, usrv->service);
1521         }
1522         os_free(str);
1523
1524         if (count == 0) {
1525                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1526                            "available");
1527                 /* Status Code */
1528                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1529                 /* Response Data: empty */
1530         }
1531
1532         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1533 }
1534
1535
1536 #ifdef CONFIG_WIFI_DISPLAY
1537 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1538                             struct wpabuf *resp, u8 srv_trans_id,
1539                             const u8 *query, size_t query_len)
1540 {
1541         const u8 *pos;
1542         u8 role;
1543         u8 *len_pos;
1544
1545         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1546
1547         if (!wpa_s->global->wifi_display) {
1548                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1549                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1550                                             srv_trans_id);
1551                 return;
1552         }
1553
1554         if (query_len < 1) {
1555                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1556                            "Role");
1557                 return;
1558         }
1559
1560         if (wpabuf_tailroom(resp) < 5)
1561                 return;
1562
1563         pos = query;
1564         role = *pos++;
1565         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1566
1567         /* TODO: role specific handling */
1568
1569         /* Length (to be filled) */
1570         len_pos = wpabuf_put(resp, 2);
1571         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1572         wpabuf_put_u8(resp, srv_trans_id);
1573         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1574
1575         while (pos < query + query_len) {
1576                 if (*pos < MAX_WFD_SUBELEMS &&
1577                     wpa_s->global->wfd_subelem[*pos] &&
1578                     wpabuf_tailroom(resp) >=
1579                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1580                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1581                                    "subelement %u", *pos);
1582                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1583                 }
1584                 pos++;
1585         }
1586
1587         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1588 }
1589 #endif /* CONFIG_WIFI_DISPLAY */
1590
1591
1592 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1593                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1594 {
1595         struct wpa_supplicant *wpa_s = ctx;
1596         const u8 *pos = tlvs;
1597         const u8 *end = tlvs + tlvs_len;
1598         const u8 *tlv_end;
1599         u16 slen;
1600         struct wpabuf *resp;
1601         u8 srv_proto, srv_trans_id;
1602         size_t buf_len;
1603         char *buf;
1604
1605         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1606                     tlvs, tlvs_len);
1607         buf_len = 2 * tlvs_len + 1;
1608         buf = os_malloc(buf_len);
1609         if (buf) {
1610                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1611                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1612                              MACSTR " %u %u %s",
1613                              freq, MAC2STR(sa), dialog_token, update_indic,
1614                              buf);
1615                 os_free(buf);
1616         }
1617
1618         if (wpa_s->p2p_sd_over_ctrl_iface) {
1619                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1620                                            update_indic, tlvs, tlvs_len);
1621                 return; /* to be processed by an external program */
1622         }
1623
1624         resp = wpabuf_alloc(10000);
1625         if (resp == NULL)
1626                 return;
1627
1628         while (pos + 1 < end) {
1629                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1630                 slen = WPA_GET_LE16(pos);
1631                 pos += 2;
1632                 if (pos + slen > end || slen < 2) {
1633                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1634                                    "length");
1635                         wpabuf_free(resp);
1636                         return;
1637                 }
1638                 tlv_end = pos + slen;
1639
1640                 srv_proto = *pos++;
1641                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1642                            srv_proto);
1643                 srv_trans_id = *pos++;
1644                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1645                            srv_trans_id);
1646
1647                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1648                             pos, tlv_end - pos);
1649
1650
1651                 if (wpa_s->force_long_sd) {
1652                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1653                                    "response");
1654                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1655                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1656                         goto done;
1657                 }
1658
1659                 switch (srv_proto) {
1660                 case P2P_SERV_ALL_SERVICES:
1661                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1662                                    "for all services");
1663                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1664                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1665                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1666                                            "discovery protocols available");
1667                                 wpas_sd_add_proto_not_avail(
1668                                         resp, P2P_SERV_ALL_SERVICES,
1669                                         srv_trans_id);
1670                                 break;
1671                         }
1672                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1673                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1674                         break;
1675                 case P2P_SERV_BONJOUR:
1676                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1677                                             pos, tlv_end - pos);
1678                         break;
1679                 case P2P_SERV_UPNP:
1680                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1681                                          pos, tlv_end - pos);
1682                         break;
1683 #ifdef CONFIG_WIFI_DISPLAY
1684                 case P2P_SERV_WIFI_DISPLAY:
1685                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1686                                         pos, tlv_end - pos);
1687                         break;
1688 #endif /* CONFIG_WIFI_DISPLAY */
1689                 default:
1690                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1691                                    "protocol %u", srv_proto);
1692                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1693                                                     srv_trans_id);
1694                         break;
1695                 }
1696
1697                 pos = tlv_end;
1698         }
1699
1700 done:
1701         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1702                                    update_indic, tlvs, tlvs_len);
1703
1704         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1705
1706         wpabuf_free(resp);
1707 }
1708
1709
1710 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1711                       const u8 *tlvs, size_t tlvs_len)
1712 {
1713         struct wpa_supplicant *wpa_s = ctx;
1714         const u8 *pos = tlvs;
1715         const u8 *end = tlvs + tlvs_len;
1716         const u8 *tlv_end;
1717         u16 slen;
1718         size_t buf_len;
1719         char *buf;
1720
1721         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1722                     tlvs, tlvs_len);
1723         if (tlvs_len > 1500) {
1724                 /* TODO: better way for handling this */
1725                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1726                              P2P_EVENT_SERV_DISC_RESP MACSTR
1727                              " %u <long response: %u bytes>",
1728                              MAC2STR(sa), update_indic,
1729                              (unsigned int) tlvs_len);
1730         } else {
1731                 buf_len = 2 * tlvs_len + 1;
1732                 buf = os_malloc(buf_len);
1733                 if (buf) {
1734                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1735                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1736                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1737                                      MAC2STR(sa), update_indic, buf);
1738                         os_free(buf);
1739                 }
1740         }
1741
1742         while (pos < end) {
1743                 u8 srv_proto, srv_trans_id, status;
1744
1745                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1746                 slen = WPA_GET_LE16(pos);
1747                 pos += 2;
1748                 if (pos + slen > end || slen < 3) {
1749                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1750                                    "length");
1751                         return;
1752                 }
1753                 tlv_end = pos + slen;
1754
1755                 srv_proto = *pos++;
1756                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1757                            srv_proto);
1758                 srv_trans_id = *pos++;
1759                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1760                            srv_trans_id);
1761                 status = *pos++;
1762                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1763                            status);
1764
1765                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1766                             pos, tlv_end - pos);
1767
1768                 pos = tlv_end;
1769         }
1770
1771         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1772 }
1773
1774
1775 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1776                         const struct wpabuf *tlvs)
1777 {
1778         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1779                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1780         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1781                 return 0;
1782         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1783 }
1784
1785
1786 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1787                              u8 version, const char *query)
1788 {
1789         struct wpabuf *tlvs;
1790         u64 ret;
1791
1792         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1793         if (tlvs == NULL)
1794                 return 0;
1795         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1796         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1797         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1798         wpabuf_put_u8(tlvs, version);
1799         wpabuf_put_str(tlvs, query);
1800         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1801         wpabuf_free(tlvs);
1802         return ret;
1803 }
1804
1805
1806 #ifdef CONFIG_WIFI_DISPLAY
1807
1808 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1809                                    const struct wpabuf *tlvs)
1810 {
1811         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1812                 return 0;
1813         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1814                 return 0;
1815         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1816 }
1817
1818
1819 #define MAX_WFD_SD_SUBELEMS 20
1820
1821 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1822                                 const char *subelems)
1823 {
1824         u8 *len;
1825         const char *pos;
1826         int val;
1827         int count = 0;
1828
1829         len = wpabuf_put(tlvs, 2);
1830         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1831         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1832
1833         wpabuf_put_u8(tlvs, role);
1834
1835         pos = subelems;
1836         while (*pos) {
1837                 val = atoi(pos);
1838                 if (val >= 0 && val < 256) {
1839                         wpabuf_put_u8(tlvs, val);
1840                         count++;
1841                         if (count == MAX_WFD_SD_SUBELEMS)
1842                                 break;
1843                 }
1844                 pos = os_strchr(pos + 1, ',');
1845                 if (pos == NULL)
1846                         break;
1847                 pos++;
1848         }
1849
1850         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1851 }
1852
1853
1854 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1855                                      const u8 *dst, const char *role)
1856 {
1857         struct wpabuf *tlvs;
1858         u64 ret;
1859         const char *subelems;
1860         u8 id = 1;
1861
1862         subelems = os_strchr(role, ' ');
1863         if (subelems == NULL)
1864                 return 0;
1865         subelems++;
1866
1867         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1868         if (tlvs == NULL)
1869                 return 0;
1870
1871         if (os_strstr(role, "[source]"))
1872                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1873         if (os_strstr(role, "[pri-sink]"))
1874                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1875         if (os_strstr(role, "[sec-sink]"))
1876                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1877         if (os_strstr(role, "[source+sink]"))
1878                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1879
1880         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1881         wpabuf_free(tlvs);
1882         return ret;
1883 }
1884
1885 #endif /* CONFIG_WIFI_DISPLAY */
1886
1887
1888 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1889 {
1890         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1891                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1892         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1893                 return -1;
1894         return p2p_sd_cancel_request(wpa_s->global->p2p,
1895                                      (void *) (uintptr_t) req);
1896 }
1897
1898
1899 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1900                           const u8 *dst, u8 dialog_token,
1901                           const struct wpabuf *resp_tlvs)
1902 {
1903         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1904                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1905                                         resp_tlvs);
1906                 return;
1907         }
1908         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1909                 return;
1910         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1911                         resp_tlvs);
1912 }
1913
1914 #ifdef ANDROID_P2P
1915 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1916 #else
1917 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1918 #endif
1919 {
1920         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1921                 wpa_drv_p2p_service_update(wpa_s);
1922                 return;
1923         }
1924         if (wpa_s->global->p2p)
1925 #ifdef ANDROID_P2P
1926                 p2p_sd_service_update(wpa_s->global->p2p, action);
1927 #else
1928                 p2p_sd_service_update(wpa_s->global->p2p);
1929 #endif
1930 }
1931
1932
1933 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1934 {
1935         dl_list_del(&bsrv->list);
1936         wpabuf_free(bsrv->query);
1937         wpabuf_free(bsrv->resp);
1938         os_free(bsrv);
1939 }
1940
1941
1942 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1943 {
1944         dl_list_del(&usrv->list);
1945         os_free(usrv->service);
1946         os_free(usrv);
1947 }
1948
1949
1950 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1951 {
1952         struct p2p_srv_bonjour *bsrv, *bn;
1953         struct p2p_srv_upnp *usrv, *un;
1954
1955         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1956                               struct p2p_srv_bonjour, list)
1957                 wpas_p2p_srv_bonjour_free(bsrv);
1958
1959         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1960                               struct p2p_srv_upnp, list)
1961                 wpas_p2p_srv_upnp_free(usrv);
1962
1963 #ifdef ANDROID_P2P
1964         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1965 #else
1966         wpas_p2p_sd_service_update(wpa_s);
1967 #endif
1968 }
1969
1970
1971 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1972                                  struct wpabuf *query, struct wpabuf *resp)
1973 {
1974         struct p2p_srv_bonjour *bsrv;
1975
1976         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1977         if (bsrv) {
1978                 wpabuf_free(query);
1979                 wpabuf_free(bsrv->resp);
1980                 bsrv->resp = resp;
1981                 return 0;
1982         }
1983
1984         bsrv = os_zalloc(sizeof(*bsrv));
1985         if (bsrv == NULL)
1986                 return -1;
1987         bsrv->query = query;
1988         bsrv->resp = resp;
1989         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1990
1991 #ifdef ANDROID_P2P
1992         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
1993 #else
1994         wpas_p2p_sd_service_update(wpa_s);
1995 #endif
1996         return 0;
1997 }
1998
1999
2000 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2001                                  const struct wpabuf *query)
2002 {
2003         struct p2p_srv_bonjour *bsrv;
2004
2005         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2006         if (bsrv == NULL)
2007                 return -1;
2008         wpas_p2p_srv_bonjour_free(bsrv);
2009 #ifdef ANDROID_P2P
2010         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2011 #else
2012         wpas_p2p_sd_service_update(wpa_s);
2013 #endif
2014         return 0;
2015 }
2016
2017
2018 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2019                               const char *service)
2020 {
2021         struct p2p_srv_upnp *usrv;
2022
2023         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2024                 return 0; /* Already listed */
2025         usrv = os_zalloc(sizeof(*usrv));
2026         if (usrv == NULL)
2027                 return -1;
2028         usrv->version = version;
2029         usrv->service = os_strdup(service);
2030         if (usrv->service == NULL) {
2031                 os_free(usrv);
2032                 return -1;
2033         }
2034         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2035
2036 #ifdef ANDROID_P2P
2037         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2038 #else
2039         wpas_p2p_sd_service_update(wpa_s);
2040 #endif
2041         return 0;
2042 }
2043
2044
2045 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2046                               const char *service)
2047 {
2048         struct p2p_srv_upnp *usrv;
2049
2050         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2051         if (usrv == NULL)
2052                 return -1;
2053         wpas_p2p_srv_upnp_free(usrv);
2054 #ifdef ANDROID_P2P
2055         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2056 #else
2057         wpas_p2p_sd_service_update(wpa_s);
2058 #endif
2059         return 0;
2060 }
2061
2062
2063 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2064                                          const u8 *peer, const char *params,
2065                                          unsigned int generated_pin)
2066 {
2067         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2068                 MAC2STR(peer), generated_pin, params);
2069 }
2070
2071
2072 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2073                                         const u8 *peer, const char *params)
2074 {
2075         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2076                 MAC2STR(peer), params);
2077 }
2078
2079
2080 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2081                         const u8 *dev_addr, const u8 *pri_dev_type,
2082                         const char *dev_name, u16 supp_config_methods,
2083                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2084                         size_t group_id_len)
2085 {
2086         struct wpa_supplicant *wpa_s = ctx;
2087         char devtype[WPS_DEV_TYPE_BUFSIZE];
2088         char params[300];
2089         u8 empty_dev_type[8];
2090         unsigned int generated_pin = 0;
2091         struct wpa_supplicant *group = NULL;
2092
2093         if (group_id) {
2094                 for (group = wpa_s->global->ifaces; group; group = group->next)
2095                 {
2096                         struct wpa_ssid *s = group->current_ssid;
2097                         if (s != NULL &&
2098                             s->mode == WPAS_MODE_P2P_GO &&
2099                             group_id_len - ETH_ALEN == s->ssid_len &&
2100                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2101                                       s->ssid_len) == 0)
2102                                 break;
2103                 }
2104         }
2105
2106         if (pri_dev_type == NULL) {
2107                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2108                 pri_dev_type = empty_dev_type;
2109         }
2110         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2111                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2112                     "dev_capab=0x%x group_capab=0x%x%s%s",
2113                     MAC2STR(dev_addr),
2114                     wps_dev_type_bin2str(pri_dev_type, devtype,
2115                                          sizeof(devtype)),
2116                     dev_name, supp_config_methods, dev_capab, group_capab,
2117                     group ? " group=" : "",
2118                     group ? group->ifname : "");
2119         params[sizeof(params) - 1] = '\0';
2120
2121         if (config_methods & WPS_CONFIG_DISPLAY) {
2122                 generated_pin = wps_generate_pin();
2123                 wpas_prov_disc_local_display(wpa_s, peer, params,
2124                                              generated_pin);
2125         } else if (config_methods & WPS_CONFIG_KEYPAD)
2126                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2127         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2128                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2129                         "%s", MAC2STR(peer), params);
2130
2131         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2132                                             P2P_PROV_DISC_SUCCESS,
2133                                             config_methods, generated_pin);
2134 }
2135
2136
2137 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2138 {
2139         struct wpa_supplicant *wpa_s = ctx;
2140         unsigned int generated_pin = 0;
2141         char params[20];
2142
2143         if (wpa_s->pending_pd_before_join &&
2144             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2145              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2146                 wpa_s->pending_pd_before_join = 0;
2147                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2148                            "join-existing-group operation");
2149                 wpas_p2p_join_start(wpa_s);
2150                 return;
2151         }
2152
2153         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2154             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2155                 os_snprintf(params, sizeof(params), " peer_go=%d",
2156                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2157         else
2158                 params[0] = '\0';
2159
2160         if (config_methods & WPS_CONFIG_DISPLAY)
2161                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2162         else if (config_methods & WPS_CONFIG_KEYPAD) {
2163                 generated_pin = wps_generate_pin();
2164                 wpas_prov_disc_local_display(wpa_s, peer, params,
2165                                              generated_pin);
2166         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2167                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2168                         "%s", MAC2STR(peer), params);
2169
2170         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2171                                             P2P_PROV_DISC_SUCCESS,
2172                                             config_methods, generated_pin);
2173 }
2174
2175
2176 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2177                                 enum p2p_prov_disc_status status)
2178 {
2179         struct wpa_supplicant *wpa_s = ctx;
2180
2181         if (wpa_s->p2p_fallback_to_go_neg) {
2182                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2183                         "failed - fall back to GO Negotiation");
2184                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2185                 return;
2186         }
2187
2188 #ifdef ANDROID_P2P
2189         /* If provision discovery failed it is safe to cancel the timer here and
2190          * also do not start the join */
2191         if (wpa_s->pending_pd_before_join &&
2192             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2193              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2194                 wpa_s->pending_pd_before_join = 0;
2195                 wpa_printf(MSG_DEBUG, "P2P: Do not Start pending "
2196                            "join-existing-group operation");
2197                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2198         }
2199 #endif /* ANDROID_P2P */
2200         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2201                 " p2p_dev_addr=" MACSTR " status=%d",
2202                 MAC2STR(peer), status);
2203
2204         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2205                                             status, 0, 0);
2206 }
2207
2208
2209 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2210                                   const u8 *go_dev_addr, const u8 *ssid,
2211                                   size_t ssid_len, int *go, u8 *group_bssid,
2212                                   int *force_freq, int persistent_group)
2213 {
2214         struct wpa_supplicant *wpa_s = ctx;
2215         struct wpa_ssid *s;
2216         u8 cur_bssid[ETH_ALEN];
2217         int res;
2218         struct wpa_supplicant *grp;
2219
2220         if (!persistent_group) {
2221                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2222                            " to join an active group", MAC2STR(sa));
2223                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2224                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2225                      == 0 ||
2226                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2227                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2228                                    "authorized invitation");
2229                         goto accept_inv;
2230                 }
2231                 /*
2232                  * Do not accept the invitation automatically; notify user and
2233                  * request approval.
2234                  */
2235                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2236         }
2237
2238         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2239         if (grp) {
2240                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2241                            "running persistent group");
2242                 if (*go)
2243                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2244                 goto accept_inv;
2245         }
2246
2247         if (!wpa_s->conf->persistent_reconnect)
2248                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2249
2250         for (s = wpa_s->conf->ssid; s; s = s->next) {
2251                 if (s->disabled == 2 &&
2252                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2253                     s->ssid_len == ssid_len &&
2254                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2255                         break;
2256         }
2257
2258         if (!s) {
2259                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2260                            " requested reinvocation of an unknown group",
2261                            MAC2STR(sa));
2262                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2263         }
2264
2265         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2266                 *go = 1;
2267                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2268                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2269                                    "interface is already in use - reject "
2270                                    "invitation");
2271                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2272                 }
2273                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2274         } else if (s->mode == WPAS_MODE_P2P_GO) {
2275                 *go = 1;
2276                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2277                 {
2278                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2279                                    "interface address for the group");
2280                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2281                 }
2282                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2283                           ETH_ALEN);
2284         }
2285
2286 accept_inv:
2287         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2288             wpa_s->assoc_freq) {
2289                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2290                            "the channel we are already using");
2291                 *force_freq = wpa_s->assoc_freq;
2292         }
2293
2294         res = wpa_drv_shared_freq(wpa_s);
2295         if (res > 0) {
2296                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2297                            "with the channel we are already using on a "
2298                            "shared interface");
2299                 *force_freq = res;
2300         }
2301
2302         return P2P_SC_SUCCESS;
2303 }
2304
2305
2306 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2307                                      const u8 *ssid, size_t ssid_len,
2308                                      const u8 *go_dev_addr, u8 status,
2309                                      int op_freq)
2310 {
2311         struct wpa_supplicant *wpa_s = ctx;
2312         struct wpa_ssid *s;
2313
2314         for (s = wpa_s->conf->ssid; s; s = s->next) {
2315                 if (s->disabled == 2 &&
2316                     s->ssid_len == ssid_len &&
2317                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2318                         break;
2319         }
2320
2321         if (status == P2P_SC_SUCCESS) {
2322                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2323                            " was accepted; op_freq=%d MHz",
2324                            MAC2STR(sa), op_freq);
2325                 if (s) {
2326                         int go = s->mode == WPAS_MODE_P2P_GO;
2327                         wpas_p2p_group_add_persistent(
2328                                 wpa_s, s, go, go ? op_freq : 0, 0);
2329                 } else if (bssid) {
2330                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2331                                       wpa_s->p2p_wps_method, 0);
2332                 }
2333                 return;
2334         }
2335
2336         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2337                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2338                            " was rejected (status %u)", MAC2STR(sa), status);
2339                 return;
2340         }
2341
2342         if (!s) {
2343                 if (bssid) {
2344                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2345                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2346                                 " bssid=" MACSTR " unknown-network",
2347                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2348                                 MAC2STR(bssid));
2349                 } else {
2350                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2351                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2352                                 " unknown-network",
2353                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2354                 }
2355                 return;
2356         }
2357
2358         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2359                 " persistent=%d", MAC2STR(sa), s->id);
2360 }
2361
2362
2363 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2364 {
2365         struct wpa_supplicant *wpa_s = ctx;
2366         struct wpa_ssid *ssid;
2367
2368         if (bssid) {
2369                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2370                         "status=%d " MACSTR,
2371                         status, MAC2STR(bssid));
2372         } else {
2373                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2374                         "status=%d ", status);
2375         }
2376         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2377
2378         if (wpa_s->pending_invite_ssid_id == -1)
2379                 return; /* Invitation to active group */
2380
2381         if (status != P2P_SC_SUCCESS) {
2382                 wpas_p2p_remove_pending_group_interface(wpa_s);
2383                 return;
2384         }
2385
2386         ssid = wpa_config_get_network(wpa_s->conf,
2387                                       wpa_s->pending_invite_ssid_id);
2388         if (ssid == NULL) {
2389                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2390                            "data matching with invitation");
2391                 return;
2392         }
2393
2394         /*
2395          * The peer could have missed our ctrl::ack frame for Invitation
2396          * Response and continue retransmitting the frame. To reduce the
2397          * likelihood of the peer not getting successful TX status for the
2398          * Invitation Response frame, wait a short time here before starting
2399          * the persistent group so that we will remain on the current channel to
2400          * acknowledge any possible retransmission from the peer.
2401          */
2402 #ifndef ANDROID_P2P
2403         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2404                 "starting persistent group");
2405         os_sleep(0, 50000);
2406 #else
2407         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 100 ms wait on current channel before "
2408                 "starting persistent group");
2409         os_sleep(0, 100000);
2410 #endif
2411
2412         wpas_p2p_group_add_persistent(wpa_s, ssid,
2413                                       ssid->mode == WPAS_MODE_P2P_GO,
2414                                       wpa_s->p2p_persistent_go_freq,
2415                                       wpa_s->p2p_go_ht40);
2416 }
2417
2418
2419 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2420                                     unsigned int freq)
2421 {
2422         unsigned int i;
2423
2424         if (global->p2p_disallow_freq == NULL)
2425                 return 0;
2426
2427         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2428                 if (freq >= global->p2p_disallow_freq[i].min &&
2429                     freq <= global->p2p_disallow_freq[i].max)
2430                         return 1;
2431         }
2432
2433         return 0;
2434 }
2435
2436
2437 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2438 {
2439         reg->channel[reg->channels] = chan;
2440         reg->channels++;
2441 }
2442
2443
2444 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2445                                      struct p2p_channels *chan)
2446 {
2447         int i, cla = 0;
2448
2449         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2450                    "band");
2451
2452         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2453         chan->reg_class[cla].reg_class = 81;
2454         chan->reg_class[cla].channels = 0;
2455         for (i = 0; i < 11; i++) {
2456                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2457                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2458         }
2459         if (chan->reg_class[cla].channels)
2460                 cla++;
2461
2462         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2463                    "band");
2464
2465         /* Operating class 115 - 5 GHz, channels 36-48 */
2466         chan->reg_class[cla].reg_class = 115;
2467         chan->reg_class[cla].channels = 0;
2468         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2469                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2470         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2471                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2472         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2473                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2474         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2475                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2476         if (chan->reg_class[cla].channels)
2477                 cla++;
2478
2479         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2480                    "band");
2481
2482         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2483         chan->reg_class[cla].reg_class = 124;
2484         chan->reg_class[cla].channels = 0;
2485         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2486                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2487         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2488                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2489         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2490                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2491         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2492                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2493         if (chan->reg_class[cla].channels)
2494                 cla++;
2495
2496         chan->reg_classes = cla;
2497         return 0;
2498 }
2499
2500
2501 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2502                                           u16 num_modes,
2503                                           enum hostapd_hw_mode mode)
2504 {
2505         u16 i;
2506
2507         for (i = 0; i < num_modes; i++) {
2508                 if (modes[i].mode == mode)
2509                         return &modes[i];
2510         }
2511
2512         return NULL;
2513 }
2514
2515
2516 static int has_channel(struct wpa_global *global,
2517                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2518 {
2519         int i;
2520         unsigned int freq;
2521
2522         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2523                 chan * 5;
2524         if (wpas_p2p_disallowed_freq(global, freq))
2525                 return 0;
2526
2527         for (i = 0; i < mode->num_channels; i++) {
2528                 if (mode->channels[i].chan == chan) {
2529                         if (flags)
2530                                 *flags = mode->channels[i].flag;
2531                         return !(mode->channels[i].flag &
2532                                  (HOSTAPD_CHAN_DISABLED |
2533                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2534                                   HOSTAPD_CHAN_NO_IBSS |
2535                                   HOSTAPD_CHAN_RADAR));
2536                 }
2537         }
2538
2539         return 0;
2540 }
2541
2542
2543 struct p2p_oper_class_map {
2544         enum hostapd_hw_mode mode;
2545         u8 op_class;
2546         u8 min_chan;
2547         u8 max_chan;
2548         u8 inc;
2549         enum { BW20, BW40PLUS, BW40MINUS } bw;
2550 };
2551
2552 static struct p2p_oper_class_map op_class[] = {
2553         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2554 #if 0 /* Do not enable HT40 on 2 GHz for now */
2555         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2556         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2557 #endif
2558         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2559         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2560         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2561         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2562         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2563         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2564         { -1, 0, 0, 0, 0, BW20 }
2565 };
2566
2567
2568 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2569                                    struct hostapd_hw_modes *mode,
2570                                    u8 channel, u8 bw)
2571 {
2572         int flag;
2573
2574         if (!has_channel(wpa_s->global, mode, channel, &flag))
2575                 return -1;
2576         if (bw == BW40MINUS &&
2577             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2578              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2579                 return 0;
2580         if (bw == BW40PLUS &&
2581             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2582              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2583                 return 0;
2584         return 1;
2585 }
2586
2587
2588 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2589                                    struct p2p_channels *chan)
2590 {
2591         struct hostapd_hw_modes *mode;
2592         int cla, op;
2593
2594         if (wpa_s->hw.modes == NULL) {
2595                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2596                            "of all supported channels; assume dualband "
2597                            "support");
2598                 return wpas_p2p_default_channels(wpa_s, chan);
2599         }
2600
2601         cla = 0;
2602
2603         for (op = 0; op_class[op].op_class; op++) {
2604                 struct p2p_oper_class_map *o = &op_class[op];
2605                 u8 ch;
2606                 struct p2p_reg_class *reg = NULL;
2607
2608                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2609                 if (mode == NULL)
2610                         continue;
2611                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2612                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2613                                 continue;
2614                         if (reg == NULL) {
2615                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2616                                            "class %u", o->op_class);
2617                                 reg = &chan->reg_class[cla];
2618                                 cla++;
2619                                 reg->reg_class = o->op_class;
2620                         }
2621                         reg->channel[reg->channels] = ch;
2622                         reg->channels++;
2623                 }
2624                 if (reg) {
2625                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2626                                     reg->channel, reg->channels);
2627                 }
2628         }
2629
2630         chan->reg_classes = cla;
2631
2632         return 0;
2633 }
2634
2635
2636 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2637                            struct hostapd_hw_modes *mode, u8 channel)
2638 {
2639         int op, ret;
2640
2641         for (op = 0; op_class[op].op_class; op++) {
2642                 struct p2p_oper_class_map *o = &op_class[op];
2643                 u8 ch;
2644
2645                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2646                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2647                             o->bw == BW20 || ch != channel)
2648                                 continue;
2649                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2650                         if (ret < 0)
2651                                 continue;
2652                         else if (ret > 0)
2653                                 return (o->bw == BW40MINUS) ? -1 : 1;
2654                         else
2655                                 return 0;
2656                 }
2657         }
2658         return 0;
2659 }
2660
2661
2662 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2663                         size_t buf_len)
2664 {
2665         struct wpa_supplicant *wpa_s = ctx;
2666
2667         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2668                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2669                         break;
2670         }
2671         if (wpa_s == NULL)
2672                 return -1;
2673
2674         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2675 }
2676
2677
2678 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2679 {
2680         struct wpa_supplicant *wpa_s = ctx;
2681
2682         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2683                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2684                 if (ssid == NULL)
2685                         continue;
2686                 if (ssid->mode != WPAS_MODE_INFRA)
2687                         continue;
2688                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2689                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2690                         continue;
2691                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2692                         return 1;
2693         }
2694
2695         return 0;
2696 }
2697
2698
2699 /**
2700  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2701  * @global: Pointer to global data from wpa_supplicant_init()
2702  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2703  * Returns: 0 on success, -1 on failure
2704  */
2705 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2706 {
2707         struct p2p_config p2p;
2708         unsigned int r;
2709         int i;
2710
2711         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2712                 return 0;
2713
2714         if (global->p2p)
2715                 return 0;
2716
2717         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2718                 struct p2p_params params;
2719
2720                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2721                 os_memset(&params, 0, sizeof(params));
2722                 params.dev_name = wpa_s->conf->device_name;
2723                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2724                           WPS_DEV_TYPE_LEN);
2725                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2726                 os_memcpy(params.sec_dev_type,
2727                           wpa_s->conf->sec_device_type,
2728                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2729
2730                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2731                         return -1;
2732
2733                 return 0;
2734         }
2735
2736         os_memset(&p2p, 0, sizeof(p2p));
2737         p2p.msg_ctx = wpa_s;
2738         p2p.cb_ctx = wpa_s;
2739         p2p.p2p_scan = wpas_p2p_scan;
2740         p2p.send_action = wpas_send_action;
2741         p2p.send_action_done = wpas_send_action_done;
2742         p2p.go_neg_completed = wpas_go_neg_completed;
2743         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2744         p2p.dev_found = wpas_dev_found;
2745         p2p.dev_lost = wpas_dev_lost;
2746         p2p.start_listen = wpas_start_listen;
2747         p2p.stop_listen = wpas_stop_listen;
2748         p2p.send_probe_resp = wpas_send_probe_resp;
2749         p2p.sd_request = wpas_sd_request;
2750         p2p.sd_response = wpas_sd_response;
2751         p2p.prov_disc_req = wpas_prov_disc_req;
2752         p2p.prov_disc_resp = wpas_prov_disc_resp;
2753         p2p.prov_disc_fail = wpas_prov_disc_fail;
2754         p2p.invitation_process = wpas_invitation_process;
2755         p2p.invitation_received = wpas_invitation_received;
2756         p2p.invitation_result = wpas_invitation_result;
2757         p2p.get_noa = wpas_get_noa;
2758         p2p.go_connected = wpas_go_connected;
2759
2760         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2761         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2762         p2p.dev_name = wpa_s->conf->device_name;
2763         p2p.manufacturer = wpa_s->conf->manufacturer;
2764         p2p.model_name = wpa_s->conf->model_name;
2765         p2p.model_number = wpa_s->conf->model_number;
2766         p2p.serial_number = wpa_s->conf->serial_number;
2767         if (wpa_s->wps) {
2768                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2769                 p2p.config_methods = wpa_s->wps->config_methods;
2770         }
2771
2772         if (wpa_s->conf->p2p_listen_reg_class &&
2773             wpa_s->conf->p2p_listen_channel) {
2774                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2775                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2776         } else {
2777                 p2p.reg_class = 81;
2778                 /*
2779                  * Pick one of the social channels randomly as the listen
2780                  * channel.
2781                  */
2782                 os_get_random((u8 *) &r, sizeof(r));
2783                 p2p.channel = 1 + (r % 3) * 5;
2784         }
2785         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2786
2787         if (wpa_s->conf->p2p_oper_reg_class &&
2788             wpa_s->conf->p2p_oper_channel) {
2789                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2790                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2791                 p2p.cfg_op_channel = 1;
2792                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2793                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2794
2795         } else {
2796                 p2p.op_reg_class = 81;
2797                 /*
2798                  * Use random operation channel from (1, 6, 11) if no other
2799                  * preference is indicated.
2800                  */
2801                 os_get_random((u8 *) &r, sizeof(r));
2802                 p2p.op_channel = 1 + (r % 3) * 5;
2803                 p2p.cfg_op_channel = 0;
2804                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2805                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2806         }
2807         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2808                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2809                 p2p.country[2] = 0x04;
2810         } else
2811                 os_memcpy(p2p.country, "XX\x04", 3);
2812
2813         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2814                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2815                            "channel list");
2816                 return -1;
2817         }
2818
2819         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2820                   WPS_DEV_TYPE_LEN);
2821
2822         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2823         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2824                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2825
2826         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2827                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2828
2829         p2p.max_peers = 100;
2830
2831         if (wpa_s->conf->p2p_ssid_postfix) {
2832                 p2p.ssid_postfix_len =
2833                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2834                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2835                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2836                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2837                           p2p.ssid_postfix_len);
2838         }
2839
2840         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2841
2842 #ifdef ANDROID_P2P
2843         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) {
2844                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2845                 wpa_printf(MSG_DEBUG, "P2P: Multi channel concurrency support");
2846         } else {
2847         // Add support for WPA_DRIVER_FLAGS_P2P_CONCURRENT
2848                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2849                 wpa_printf(MSG_DEBUG, "P2P: Single channel concurrency support");
2850         }
2851 #endif
2852
2853         global->p2p = p2p_init(&p2p);
2854         if (global->p2p == NULL)
2855                 return -1;
2856         global->p2p_init_wpa_s = wpa_s;
2857
2858         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2859                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2860                         continue;
2861                 p2p_add_wps_vendor_extension(
2862                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2863         }
2864
2865         return 0;
2866 }
2867
2868
2869 /**
2870  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2871  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2872  *
2873  * This function deinitialize per-interface P2P data.
2874  */
2875 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2876 {
2877         if (wpa_s->driver && wpa_s->drv_priv)
2878                 wpa_drv_probe_req_report(wpa_s, 0);
2879
2880         if (wpa_s->go_params) {
2881                 /* Clear any stored provisioning info */
2882                 p2p_clear_provisioning_info(
2883                         wpa_s->global->p2p,
2884                         wpa_s->go_params->peer_device_addr);
2885         }
2886
2887         os_free(wpa_s->go_params);
2888         wpa_s->go_params = NULL;
2889         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2890         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2891         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2892         wpa_s->p2p_long_listen = 0;
2893         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2894         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2895         wpas_p2p_remove_pending_group_interface(wpa_s);
2896
2897         /* TODO: remove group interface from the driver if this wpa_s instance
2898          * is on top of a P2P group interface */
2899 }
2900
2901
2902 /**
2903  * wpas_p2p_deinit_global - Deinitialize global P2P module
2904  * @global: Pointer to global data from wpa_supplicant_init()
2905  *
2906  * This function deinitializes the global (per device) P2P module.
2907  */
2908 void wpas_p2p_deinit_global(struct wpa_global *global)
2909 {
2910         struct wpa_supplicant *wpa_s, *tmp;
2911
2912         wpa_s = global->ifaces;
2913         if (wpa_s)
2914                 wpas_p2p_service_flush(wpa_s);
2915
2916         if (global->p2p == NULL)
2917                 return;
2918
2919         /* Remove remaining P2P group interfaces */
2920         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2921                 wpa_s = wpa_s->next;
2922         while (wpa_s) {
2923                 tmp = global->ifaces;
2924                 while (tmp &&
2925                        (tmp == wpa_s ||
2926                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2927                         tmp = tmp->next;
2928                 }
2929                 if (tmp == NULL)
2930                         break;
2931                 /* Disconnect from the P2P group and deinit the interface */
2932                 wpas_p2p_disconnect(tmp);
2933         }
2934
2935         /*
2936          * Deinit GO data on any possibly remaining interface (if main
2937          * interface is used as GO).
2938          */
2939         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2940                 if (wpa_s->ap_iface)
2941                         wpas_p2p_group_deinit(wpa_s);
2942         }
2943
2944         p2p_deinit(global->p2p);
2945         global->p2p = NULL;
2946         global->p2p_init_wpa_s = NULL;
2947 }
2948
2949
2950 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2951 {
2952         if (wpa_s->drv_flags &
2953             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2954              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2955                 return 1; /* P2P group requires a new interface in every case
2956                            */
2957         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2958                 return 0; /* driver does not support concurrent operations */
2959         if (wpa_s->global->ifaces->next)
2960                 return 1; /* more that one interface already in use */
2961         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2962                 return 1; /* this interface is already in use */
2963         return 0;
2964 }
2965
2966
2967 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2968                                  const u8 *peer_addr,
2969                                  enum p2p_wps_method wps_method,
2970                                  int go_intent, const u8 *own_interface_addr,
2971                                  unsigned int force_freq, int persistent_group,
2972                                  struct wpa_ssid *ssid)
2973 {
2974         if (persistent_group && wpa_s->conf->persistent_reconnect)
2975                 persistent_group = 2;
2976
2977         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2978                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2979                                            go_intent, own_interface_addr,
2980                                            force_freq, persistent_group);
2981         }
2982
2983         /*
2984          * Increase GO config timeout if HT40 is used since it takes some time
2985          * to scan channels for coex purposes before the BSS can be started.
2986          */
2987         p2p_set_config_timeout(wpa_s->global->p2p,
2988                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2989
2990         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2991                            go_intent, own_interface_addr, force_freq,
2992                            persistent_group, ssid ? ssid->ssid : NULL,
2993                            ssid ? ssid->ssid_len : 0,
2994                            wpa_s->p2p_pd_before_go_neg);
2995 }
2996
2997
2998 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2999                                 const u8 *peer_addr,
3000                                 enum p2p_wps_method wps_method,
3001                                 int go_intent, const u8 *own_interface_addr,
3002                                 unsigned int force_freq, int persistent_group,
3003                                 struct wpa_ssid *ssid)
3004 {
3005         if (persistent_group && wpa_s->conf->persistent_reconnect)
3006                 persistent_group = 2;
3007
3008         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3009                 return -1;
3010
3011         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3012                              go_intent, own_interface_addr, force_freq,
3013                              persistent_group, ssid ? ssid->ssid : NULL,
3014                              ssid ? ssid->ssid_len : 0);
3015 }
3016
3017
3018 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3019 {
3020         wpa_s->p2p_join_scan_count++;
3021         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3022                    wpa_s->p2p_join_scan_count);
3023         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3024                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3025                            " for join operationg - stop join attempt",
3026                            MAC2STR(wpa_s->pending_join_iface_addr));
3027                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3028                 if (wpa_s->p2p_auto_pd) {
3029                         wpa_s->p2p_auto_pd = 0;
3030                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3031                                 " p2p_dev_addr=" MACSTR " status=N/A",
3032                                 MAC2STR(wpa_s->pending_join_dev_addr));
3033                         return;
3034                 }
3035                 wpa_msg(wpa_s->parent, MSG_INFO,
3036                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3037         }
3038 }
3039
3040
3041 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3042 {
3043         struct wpa_supplicant *wpa_s = eloop_ctx;
3044         if (!wpa_s->pending_pd_before_join)
3045                 return;
3046         /*
3047          * Provision Discovery Response may have been lost - try to connect
3048          * anyway since we do not need any information from this PD.
3049          */
3050         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3051                    "try to connect anyway");
3052         wpas_p2p_join_start(wpa_s);
3053 }
3054
3055
3056 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3057 {
3058         struct wpa_supplicant *iface;
3059         int shared_freq;
3060         u8 bssid[ETH_ALEN];
3061
3062         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3063                 return 0;
3064
3065         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3066                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3067                         continue;
3068                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3069                         continue;
3070                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3071                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3072                         shared_freq = iface->current_ssid->frequency;
3073                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3074                         shared_freq = iface->assoc_freq;
3075                 else
3076                         shared_freq = 0;
3077
3078                 if (shared_freq && freq != shared_freq) {
3079                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3080                                    "connected on %d MHz - new connection on "
3081                                    "%d MHz", iface->ifname, shared_freq, freq);
3082                         return 1;
3083                 }
3084         }
3085
3086         shared_freq = wpa_drv_shared_freq(wpa_s);
3087         if (shared_freq > 0 && shared_freq != freq) {
3088                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3089                            "virtual interface connected on %d MHz - new "
3090                            "connection on %d MHz", shared_freq, freq);
3091                 return 1;
3092         }
3093
3094         return 0;
3095 }
3096
3097
3098 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3099                             const u8 *peer_dev_addr)
3100 {
3101         struct wpa_bss *bss;
3102         int updated;
3103
3104         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3105         if (bss == NULL)
3106                 return -1;
3107         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3108                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3109                            "last scan");
3110                 return 0;
3111         }
3112
3113         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3114         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3115                    "%ld.%06ld (%supdated in last scan)",
3116                    bss->last_update.sec, bss->last_update.usec,
3117                    updated ? "": "not ");
3118
3119         return updated;
3120 }
3121
3122
3123 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3124                                    struct wpa_scan_results *scan_res)
3125 {
3126         struct wpa_bss *bss;
3127         int freq;
3128         u8 iface_addr[ETH_ALEN];
3129
3130         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3131
3132         if (wpa_s->global->p2p_disabled)
3133                 return;
3134
3135         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3136                    scan_res ? (int) scan_res->num : -1,
3137                    wpa_s->p2p_auto_join ? "auto_" : "");
3138
3139         if (scan_res)
3140                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3141
3142         if (wpa_s->p2p_auto_pd) {
3143                 int join = wpas_p2p_peer_go(wpa_s,
3144                                             wpa_s->pending_join_dev_addr);
3145                 if (join == 0 &&
3146                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3147                         wpa_s->auto_pd_scan_retry++;
3148                         bss = wpa_bss_get_bssid(wpa_s,
3149                                                 wpa_s->pending_join_dev_addr);
3150                         if (bss) {
3151                                 freq = bss->freq;
3152                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3153                                            "the peer " MACSTR " at %d MHz",
3154                                            wpa_s->auto_pd_scan_retry,
3155                                            MAC2STR(wpa_s->
3156                                                    pending_join_dev_addr),
3157                                            freq);
3158                                 wpas_p2p_join_scan_req(wpa_s, freq);
3159                                 return;
3160                         }
3161                 }
3162
3163                 if (join < 0)
3164                         join = 0;
3165
3166                 wpa_s->p2p_auto_pd = 0;
3167                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3168                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3169                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3170                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3171                                       wpa_s->pending_join_dev_addr,
3172                                       wpa_s->pending_pd_config_methods, join,
3173                                       0) < 0) {
3174                         wpa_s->p2p_auto_pd = 0;
3175                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3176                                 " p2p_dev_addr=" MACSTR " status=N/A",
3177                                 MAC2STR(wpa_s->pending_join_dev_addr));
3178                 }
3179                 return;
3180         }
3181
3182         if (wpa_s->p2p_auto_join) {
3183                 int join = wpas_p2p_peer_go(wpa_s,
3184                                             wpa_s->pending_join_dev_addr);
3185                 if (join < 0) {
3186                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3187                                    "running a GO -> use GO Negotiation");
3188                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3189                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3190                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3191                                          wpa_s->p2p_go_intent,
3192                                          wpa_s->p2p_connect_freq,
3193                                          wpa_s->p2p_persistent_id,
3194                                          wpa_s->p2p_pd_before_go_neg,
3195                                          wpa_s->p2p_go_ht40);
3196                         return;
3197                 }
3198
3199                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3200                            "try to join the group", join ? "" :
3201                            " in older scan");
3202                 if (!join)
3203                         wpa_s->p2p_fallback_to_go_neg = 1;
3204         }
3205
3206         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3207                                  wpa_s->pending_join_iface_addr);
3208         if (freq < 0 &&
3209             p2p_get_interface_addr(wpa_s->global->p2p,
3210                                    wpa_s->pending_join_dev_addr,
3211                                    iface_addr) == 0 &&
3212             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3213         {
3214                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3215                            "address for join from " MACSTR " to " MACSTR
3216                            " based on newly discovered P2P peer entry",
3217                            MAC2STR(wpa_s->pending_join_iface_addr),
3218                            MAC2STR(iface_addr));
3219                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3220                           ETH_ALEN);
3221
3222                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3223                                          wpa_s->pending_join_iface_addr);
3224         }
3225         if (freq >= 0) {
3226                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3227                            "from P2P peer table: %d MHz", freq);
3228         }
3229         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3230         if (bss) {
3231                 freq = bss->freq;
3232                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3233                            "from BSS table: %d MHz", freq);
3234         }
3235         if (freq > 0) {
3236                 u16 method;
3237
3238                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3239                         wpa_msg(wpa_s->parent, MSG_INFO,
3240                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3241                                 "reason=FREQ_CONFLICT");
3242                         return;
3243                 }
3244
3245                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3246                            "prior to joining an existing group (GO " MACSTR
3247                            " freq=%u MHz)",
3248                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3249                 wpa_s->pending_pd_before_join = 1;
3250
3251                 switch (wpa_s->pending_join_wps_method) {
3252                 case WPS_PIN_DISPLAY:
3253                         method = WPS_CONFIG_KEYPAD;
3254                         break;
3255                 case WPS_PIN_KEYPAD:
3256                         method = WPS_CONFIG_DISPLAY;
3257                         break;
3258                 case WPS_PBC:
3259                         method = WPS_CONFIG_PUSHBUTTON;
3260                         break;
3261                 default:
3262                         method = 0;
3263                         break;
3264                 }
3265
3266                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3267                                                wpa_s->pending_join_dev_addr) ==
3268                      method)) {
3269                         /*
3270                          * We have already performed provision discovery for
3271                          * joining the group. Proceed directly to join
3272                          * operation without duplicated provision discovery. */
3273                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3274                                    "with " MACSTR " already done - proceed to "
3275                                    "join",
3276                                    MAC2STR(wpa_s->pending_join_dev_addr));
3277                         wpa_s->pending_pd_before_join = 0;
3278                         goto start;
3279                 }
3280
3281                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3282                                       wpa_s->pending_join_dev_addr, method, 1,
3283                                       freq) < 0) {
3284                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3285                                    "Discovery Request before joining an "
3286                                    "existing group");
3287                         wpa_s->pending_pd_before_join = 0;
3288                         goto start;
3289                 }
3290
3291                 /*
3292                  * Actual join operation will be started from the Action frame
3293                  * TX status callback (if no ACK is received) or when the
3294                  * Provision Discovery Response is received. Use a short
3295                  * timeout as a backup mechanism should the Provision Discovery
3296                  * Response be lost for any reason.
3297                  */
3298                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3299                                      NULL);
3300                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3301                                        wpa_s, NULL);
3302                 return;
3303         }
3304
3305         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3306         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3307         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3308         wpas_p2p_check_join_scan_limit(wpa_s);
3309         return;
3310
3311 start:
3312         /* Start join operation immediately */
3313         wpas_p2p_join_start(wpa_s);
3314 }
3315
3316
3317 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3318 {
3319         int ret;
3320         struct wpa_driver_scan_params params;
3321         struct wpabuf *wps_ie, *ies;
3322         size_t ielen;
3323         int freqs[2] = { 0, 0 };
3324 #ifdef ANDROID_P2P
3325         int oper_freq;
3326
3327         /* If freq is not provided, check the operating freq of the GO and do a
3328          * a directed scan to save time
3329          */
3330         if(!freq) {
3331                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3332                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3333         }
3334 #endif
3335         os_memset(&params, 0, sizeof(params));
3336
3337         /* P2P Wildcard SSID */
3338         params.num_ssids = 1;
3339         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3340         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3341
3342         wpa_s->wps->dev.p2p = 1;
3343         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3344                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3345                                         NULL);
3346         if (wps_ie == NULL) {
3347                 wpas_p2p_scan_res_join(wpa_s, NULL);
3348                 return;
3349         }
3350
3351         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3352         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3353         if (ies == NULL) {
3354                 wpabuf_free(wps_ie);
3355                 wpas_p2p_scan_res_join(wpa_s, NULL);
3356                 return;
3357         }
3358         wpabuf_put_buf(ies, wps_ie);
3359         wpabuf_free(wps_ie);
3360
3361         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3362
3363         params.p2p_probe = 1;
3364         params.extra_ies = wpabuf_head(ies);
3365         params.extra_ies_len = wpabuf_len(ies);
3366         if (freq > 0) {
3367                 freqs[0] = freq;
3368                 params.freqs = freqs;
3369         }
3370
3371         /*
3372          * Run a scan to update BSS table and start Provision Discovery once
3373          * the new scan results become available.
3374          */
3375         ret = wpa_drv_scan(wpa_s, &params);
3376         if (!ret)
3377                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3378
3379         wpabuf_free(ies);
3380
3381         if (ret) {
3382                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3383                            "try again later");
3384                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3385                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3386                 wpas_p2p_check_join_scan_limit(wpa_s);
3387         }
3388 }
3389
3390
3391 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3392 {
3393         struct wpa_supplicant *wpa_s = eloop_ctx;
3394         wpas_p2p_join_scan_req(wpa_s, 0);
3395 }
3396
3397
3398 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3399                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3400                          int auto_join)
3401 {
3402         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3403                    MACSTR " dev " MACSTR ")%s",
3404                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3405                    auto_join ? " (auto_join)" : "");
3406
3407         wpa_s->p2p_auto_pd = 0;
3408         wpa_s->p2p_auto_join = !!auto_join;
3409         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3410         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3411         wpa_s->pending_join_wps_method = wps_method;
3412
3413         /* Make sure we are not running find during connection establishment */
3414         wpas_p2p_stop_find(wpa_s);
3415
3416         wpa_s->p2p_join_scan_count = 0;
3417         wpas_p2p_join_scan(wpa_s, NULL);
3418         return 0;
3419 }
3420
3421
3422 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3423 {
3424         struct wpa_supplicant *group;
3425         struct p2p_go_neg_results res;
3426         struct wpa_bss *bss;
3427
3428         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3429         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3430         if (group == NULL)
3431                 return -1;
3432         if (group != wpa_s) {
3433                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3434                           sizeof(group->p2p_pin));
3435                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3436         }
3437
3438         group->p2p_in_provisioning = 1;
3439         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3440
3441         os_memset(&res, 0, sizeof(res));
3442         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3443                   ETH_ALEN);
3444         res.wps_method = wpa_s->pending_join_wps_method;
3445         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3446         if (bss) {
3447                 res.freq = bss->freq;
3448                 res.ssid_len = bss->ssid_len;
3449                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3450         }
3451
3452         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3453                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3454                            "starting client");
3455                 wpa_drv_cancel_remain_on_channel(wpa_s);
3456                 wpa_s->off_channel_freq = 0;
3457                 wpa_s->roc_waiting_drv_freq = 0;
3458         }
3459         wpas_start_wps_enrollee(group, &res);
3460
3461         /*
3462          * Allow a longer timeout for join-a-running-group than normal 15
3463          * second group formation timeout since the GO may not have authorized
3464          * our connection yet.
3465          */
3466         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3467         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3468                                wpa_s, NULL);
3469
3470         return 0;
3471 }
3472
3473
3474 /**
3475  * wpas_p2p_connect - Request P2P Group Formation to be started
3476  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3477  * @peer_addr: Address of the peer P2P Device
3478  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3479  * @persistent_group: Whether to create a persistent group
3480  * @auto_join: Whether to select join vs. GO Negotiation automatically
3481  * @join: Whether to join an existing group (as a client) instead of starting
3482  *      Group Owner negotiation; @peer_addr is BSSID in that case
3483  * @auth: Whether to only authorize the connection instead of doing that and
3484  *      initiating Group Owner negotiation
3485  * @go_intent: GO Intent or -1 to use default
3486  * @freq: Frequency for the group or 0 for auto-selection
3487  * @persistent_id: Persistent group credentials to use for forcing GO
3488  *      parameters or -1 to generate new values (SSID/passphrase)
3489  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3490  *      interoperability workaround when initiating group formation
3491  * @ht40: Start GO with 40 MHz channel width
3492  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3493  *      failure, -2 on failure due to channel not currently available,
3494  *      -3 if forced channel is not supported
3495  */
3496 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3497                      const char *pin, enum p2p_wps_method wps_method,
3498                      int persistent_group, int auto_join, int join, int auth,
3499                      int go_intent, int freq, int persistent_id, int pd,
3500                      int ht40)
3501 {
3502         int force_freq = 0, oper_freq = 0;
3503         u8 bssid[ETH_ALEN];
3504         int ret = 0;
3505         enum wpa_driver_if_type iftype;
3506         const u8 *if_addr;
3507         struct wpa_ssid *ssid = NULL;
3508
3509         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3510                 return -1;
3511
3512         if (persistent_id >= 0) {
3513                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3514                 if (ssid == NULL || ssid->disabled != 2 ||
3515                     ssid->mode != WPAS_MODE_P2P_GO)
3516                         return -1;
3517         }
3518
3519         if (go_intent < 0)
3520                 go_intent = wpa_s->conf->p2p_go_intent;
3521
3522         if (!auth)
3523                 wpa_s->p2p_long_listen = 0;
3524
3525         wpa_s->p2p_wps_method = wps_method;
3526         wpa_s->p2p_persistent_group = !!persistent_group;
3527         wpa_s->p2p_persistent_id = persistent_id;
3528         wpa_s->p2p_go_intent = go_intent;
3529         wpa_s->p2p_connect_freq = freq;
3530         wpa_s->p2p_fallback_to_go_neg = 0;
3531         wpa_s->p2p_pd_before_go_neg = !!pd;
3532         wpa_s->p2p_go_ht40 = !!ht40;
3533
3534         if (pin)
3535                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3536         else if (wps_method == WPS_PIN_DISPLAY) {
3537                 ret = wps_generate_pin();
3538                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3539                             ret);
3540                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3541                            wpa_s->p2p_pin);
3542         } else
3543                 wpa_s->p2p_pin[0] = '\0';
3544
3545         if (join || auto_join) {
3546                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3547                 if (auth) {
3548                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3549                                    "connect a running group from " MACSTR,
3550                                    MAC2STR(peer_addr));
3551                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3552                         return ret;
3553                 }
3554                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3555                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3556                                            iface_addr) < 0) {
3557                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3558                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3559                                          dev_addr);
3560                 }
3561                 if (auto_join) {
3562                         os_get_time(&wpa_s->p2p_auto_started);
3563                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3564                                    "%ld.%06ld",
3565                                    wpa_s->p2p_auto_started.sec,
3566                                    wpa_s->p2p_auto_started.usec);
3567                 }
3568                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3569                                   auto_join) < 0)
3570                         return -1;
3571                 return ret;
3572         }
3573
3574         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3575             wpa_s->assoc_freq)
3576                 oper_freq = wpa_s->assoc_freq;
3577         else {
3578                 oper_freq = wpa_drv_shared_freq(wpa_s);
3579                 if (oper_freq < 0)
3580                         oper_freq = 0;
3581         }
3582
3583         if (freq > 0) {
3584                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3585                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3586                                    "(%u MHz) is not supported for P2P uses",
3587                                    freq);
3588                         return -3;
3589                 }
3590
3591                 if (oper_freq > 0 && freq != oper_freq &&
3592                     !(wpa_s->drv_flags &
3593                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3594                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3595                                    "on %u MHz while connected on another "
3596                                    "channel (%u MHz)", freq, oper_freq);
3597                         return -2;
3598                 }
3599                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3600                            "requested channel (%u MHz)", freq);
3601                 force_freq = freq;
3602         } else if (oper_freq > 0 &&
3603                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3604                 if (!(wpa_s->drv_flags &
3605                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3606                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3607                                    "while connected on non-P2P supported "
3608                                    "channel (%u MHz)", oper_freq);
3609                         return -2;
3610                 }
3611                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3612                            "(%u MHz) not available for P2P - try to use "
3613                            "another channel", oper_freq);
3614                 force_freq = 0;
3615         } else if (oper_freq > 0) {
3616                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3617                            "channel we are already using (%u MHz) on another "
3618                            "interface", oper_freq);
3619                 force_freq = oper_freq;
3620         }
3621
3622         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3623
3624         if (wpa_s->create_p2p_iface) {
3625                 /* Prepare to add a new interface for the group */
3626                 iftype = WPA_IF_P2P_GROUP;
3627                 if (go_intent == 15)
3628                         iftype = WPA_IF_P2P_GO;
3629                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3630                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3631                                    "interface for the group");
3632                         return -1;
3633                 }
3634
3635                 if_addr = wpa_s->pending_interface_addr;
3636         } else
3637                 if_addr = wpa_s->own_addr;
3638
3639         if (auth) {
3640                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3641                                          go_intent, if_addr,
3642                                          force_freq, persistent_group, ssid) <
3643                     0)
3644                         return -1;
3645                 return ret;
3646         }
3647
3648         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3649                                   go_intent, if_addr, force_freq,
3650                                   persistent_group, ssid) < 0) {
3651                 if (wpa_s->create_p2p_iface)
3652                         wpas_p2p_remove_pending_group_interface(wpa_s);
3653                 return -1;
3654         }
3655         return ret;
3656 }
3657
3658
3659 /**
3660  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3661  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3662  * @freq: Frequency of the channel in MHz
3663  * @duration: Duration of the stay on the channel in milliseconds
3664  *
3665  * This callback is called when the driver indicates that it has started the
3666  * requested remain-on-channel duration.
3667  */
3668 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3669                                    unsigned int freq, unsigned int duration)
3670 {
3671         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3672                 return;
3673         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3674                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3675                               wpa_s->pending_listen_duration);
3676                 wpa_s->pending_listen_freq = 0;
3677         }
3678 }
3679
3680
3681 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3682                                  unsigned int timeout)
3683 {
3684         /* Limit maximum Listen state time based on driver limitation. */
3685         if (timeout > wpa_s->max_remain_on_chan)
3686                 timeout = wpa_s->max_remain_on_chan;
3687
3688         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3689                 return wpa_drv_p2p_listen(wpa_s, timeout);
3690
3691         return p2p_listen(wpa_s->global->p2p, timeout);
3692 }
3693
3694
3695 /**
3696  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3697  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3698  * @freq: Frequency of the channel in MHz
3699  *
3700  * This callback is called when the driver indicates that a remain-on-channel
3701  * operation has been completed, i.e., the duration on the requested channel
3702  * has timed out.
3703  */
3704 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3705                                           unsigned int freq)
3706 {
3707         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3708                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3709                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3710         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3711                 return;
3712         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3713                 return; /* P2P module started a new operation */
3714         if (wpa_s->pending_action_tx)
3715                 return;
3716         if (wpa_s->p2p_long_listen > 0)
3717                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3718         if (wpa_s->p2p_long_listen > 0) {
3719                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3720                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3721         }
3722 }
3723
3724
3725 /**
3726  * wpas_p2p_group_remove - Remove a P2P group
3727  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3728  * @ifname: Network interface name of the group interface or "*" to remove all
3729  *      groups
3730  * Returns: 0 on success, -1 on failure
3731  *
3732  * This function is used to remove a P2P group. This can be used to disconnect
3733  * from a group in which the local end is a P2P Client or to end a P2P Group in
3734  * case the local end is the Group Owner. If a virtual network interface was
3735  * created for this group, that interface will be removed. Otherwise, only the
3736  * configured P2P group network will be removed from the interface.
3737  */
3738 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3739 {
3740         struct wpa_global *global = wpa_s->global;
3741
3742         if (os_strcmp(ifname, "*") == 0) {
3743                 struct wpa_supplicant *prev;
3744                 wpa_s = global->ifaces;
3745                 while (wpa_s) {
3746                         prev = wpa_s;
3747                         wpa_s = wpa_s->next;
3748                         wpas_p2p_disconnect(prev);
3749                 }
3750                 return 0;
3751         }
3752
3753         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3754                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3755                         break;
3756         }
3757
3758         return wpas_p2p_disconnect(wpa_s);
3759 }
3760
3761
3762 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3763                                    struct p2p_go_neg_results *params,
3764                                    int freq, int ht40)
3765 {
3766         u8 bssid[ETH_ALEN];
3767         int res;
3768
3769         os_memset(params, 0, sizeof(*params));
3770         params->role_go = 1;
3771         params->ht40 = ht40;
3772         if (freq) {
3773                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3774                            "frequency %d MHz", freq);
3775                 params->freq = freq;
3776         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3777                    wpa_s->conf->p2p_oper_channel >= 1 &&
3778                    wpa_s->conf->p2p_oper_channel <= 11) {
3779                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3780                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3781                            "frequency %d MHz", params->freq);
3782         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3783                    wpa_s->conf->p2p_oper_reg_class == 124) {
3784                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3785                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3786                            "frequency %d MHz", params->freq);
3787         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3788                    wpa_s->best_overall_freq > 0 &&
3789                    p2p_supported_freq(wpa_s->global->p2p,
3790                                       wpa_s->best_overall_freq)) {
3791                 params->freq = wpa_s->best_overall_freq;
3792                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3793                            "channel %d MHz", params->freq);
3794         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3795                    wpa_s->best_24_freq > 0 &&
3796                    p2p_supported_freq(wpa_s->global->p2p,
3797                                       wpa_s->best_24_freq)) {
3798                 params->freq = wpa_s->best_24_freq;
3799                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3800                            "channel %d MHz", params->freq);
3801         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3802                    wpa_s->best_5_freq > 0 &&
3803                    p2p_supported_freq(wpa_s->global->p2p,
3804                                       wpa_s->best_5_freq)) {
3805                 params->freq = wpa_s->best_5_freq;
3806                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3807                            "channel %d MHz", params->freq);
3808         } else {
3809                 int chan;
3810                 for (chan = 0; chan < 11; chan++) {
3811                         params->freq = 2412 + chan * 5;
3812                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3813                                                       params->freq))
3814                                 break;
3815                 }
3816                 if (chan == 11) {
3817                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3818                                    "allowed");
3819                         return -1;
3820                 }
3821                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3822                            "known)", params->freq);
3823         }
3824
3825         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3826             wpa_s->assoc_freq && !freq) {
3827                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3828                            "already using");
3829                 params->freq = wpa_s->assoc_freq;
3830         }
3831
3832         res = wpa_drv_shared_freq(wpa_s);
3833         if (res > 0 && !freq) {
3834                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3835                            "already using on a shared interface");
3836                 params->freq = res;
3837         } else if (res > 0 && freq != res &&
3838                    !(wpa_s->drv_flags &
3839                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3840                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3841                            "while connected on another channel (%u MHz)",
3842                            freq, res);
3843                 return -1;
3844         }
3845
3846         return 0;
3847 }
3848
3849
3850 static struct wpa_supplicant *
3851 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3852                          int go)
3853 {
3854         struct wpa_supplicant *group_wpa_s;
3855
3856         if (!wpas_p2p_create_iface(wpa_s)) {
3857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
3858                         "operations");
3859                 return wpa_s;
3860         }
3861
3862         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3863                                          WPA_IF_P2P_CLIENT) < 0) {
3864                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
3865                 return NULL;
3866         }
3867         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3868         if (group_wpa_s == NULL) {
3869                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
3870                         "interface");
3871                 wpas_p2p_remove_pending_group_interface(wpa_s);
3872                 return NULL;
3873         }
3874
3875         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
3876                 group_wpa_s->ifname);
3877         return group_wpa_s;
3878 }
3879
3880
3881 /**
3882  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3883  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3884  * @persistent_group: Whether to create a persistent group
3885  * @freq: Frequency for the group or 0 to indicate no hardcoding
3886  * Returns: 0 on success, -1 on failure
3887  *
3888  * This function creates a new P2P group with the local end as the Group Owner,
3889  * i.e., without using Group Owner Negotiation.
3890  */
3891 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3892                        int freq, int ht40)
3893 {
3894         struct p2p_go_neg_results params;
3895         unsigned int r;
3896
3897         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3898                 return -1;
3899
3900         /* Make sure we are not running find during connection establishment */
3901         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3902         wpas_p2p_stop_find(wpa_s);
3903
3904         if (freq == 2) {
3905                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3906                            "band");
3907                 if (wpa_s->best_24_freq > 0 &&
3908                     p2p_supported_freq(wpa_s->global->p2p,
3909                                        wpa_s->best_24_freq)) {
3910                         freq = wpa_s->best_24_freq;
3911                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3912                                    "channel: %d MHz", freq);
3913                 } else {
3914                         os_get_random((u8 *) &r, sizeof(r));
3915                         freq = 2412 + (r % 3) * 25;
3916                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3917                                    "channel: %d MHz", freq);
3918                 }
3919         }
3920
3921         if (freq == 5) {
3922                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3923                            "band");
3924                 if (wpa_s->best_5_freq > 0 &&
3925                     p2p_supported_freq(wpa_s->global->p2p,
3926                                        wpa_s->best_5_freq)) {
3927                         freq = wpa_s->best_5_freq;
3928                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3929                                    "channel: %d MHz", freq);
3930                 } else {
3931                         os_get_random((u8 *) &r, sizeof(r));
3932                         freq = 5180 + (r % 4) * 20;
3933                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3934                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3935                                            "5 GHz channel for P2P group");
3936                                 return -1;
3937                         }
3938                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3939                                    "channel: %d MHz", freq);
3940                 }
3941         }
3942
3943         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3944                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3945                            "(%u MHz) is not supported for P2P uses",
3946                            freq);
3947                 return -1;
3948         }
3949
3950         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3951                 return -1;
3952         if (params.freq &&
3953             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3954                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3955                            "(%u MHz) is not supported for P2P uses",
3956                            params.freq);
3957                 return -1;
3958         }
3959         p2p_go_params(wpa_s->global->p2p, &params);
3960         params.persistent_group = persistent_group;
3961
3962         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3963         if (wpa_s == NULL)
3964                 return -1;
3965         wpas_start_wps_go(wpa_s, &params, 0);
3966
3967         return 0;
3968 }
3969
3970
3971 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3972                                  struct wpa_ssid *params, int addr_allocated)
3973 {
3974         struct wpa_ssid *ssid;
3975
3976         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3977         if (wpa_s == NULL)
3978                 return -1;
3979
3980         wpa_supplicant_ap_deinit(wpa_s);
3981
3982         ssid = wpa_config_add_network(wpa_s->conf);
3983         if (ssid == NULL)
3984                 return -1;
3985         wpa_config_set_network_defaults(ssid);
3986         ssid->temporary = 1;
3987         ssid->proto = WPA_PROTO_RSN;
3988         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3989         ssid->group_cipher = WPA_CIPHER_CCMP;
3990         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3991         ssid->ssid = os_malloc(params->ssid_len);
3992         if (ssid->ssid == NULL) {
3993                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3994                 return -1;
3995         }
3996         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3997         ssid->ssid_len = params->ssid_len;
3998         ssid->p2p_group = 1;
3999         ssid->export_keys = 1;
4000         if (params->psk_set) {
4001                 os_memcpy(ssid->psk, params->psk, 32);
4002                 ssid->psk_set = 1;
4003         }
4004         if (params->passphrase)
4005                 ssid->passphrase = os_strdup(params->passphrase);
4006
4007         wpa_supplicant_select_network(wpa_s, ssid);
4008
4009         wpa_s->show_group_started = 1;
4010
4011         return 0;
4012 }
4013
4014
4015 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
4016                                   struct wpa_ssid *ssid, int addr_allocated,
4017                                   int freq, int ht40)
4018 {
4019         struct p2p_go_neg_results params;
4020         int go = 0;
4021
4022         if (ssid->disabled != 2 || ssid->ssid == NULL)
4023                 return -1;
4024
4025         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4026             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4027                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4028                            "already running");
4029                 return 0;
4030         }
4031
4032         /* Make sure we are not running find during connection establishment */
4033         wpas_p2p_stop_find(wpa_s);
4034
4035         wpa_s->p2p_fallback_to_go_neg = 0;
4036
4037         if (ssid->mode == WPAS_MODE_INFRA)
4038                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4039
4040         if (ssid->mode != WPAS_MODE_P2P_GO)
4041                 return -1;
4042
4043         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4044                 return -1;
4045
4046         params.role_go = 1;
4047         if (ssid->passphrase == NULL ||
4048             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4049                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4050                            "group");
4051                 return -1;
4052         }
4053         os_strlcpy(params.passphrase, ssid->passphrase,
4054                    sizeof(params.passphrase));
4055         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4056         params.ssid_len = ssid->ssid_len;
4057         params.persistent_group = 1;
4058
4059         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4060         if (wpa_s == NULL)
4061                 return -1;
4062
4063         wpas_start_wps_go(wpa_s, &params, 0);
4064
4065         return 0;
4066 }
4067
4068
4069 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4070                                struct wpabuf *proberesp_ies)
4071 {
4072         struct wpa_supplicant *wpa_s = ctx;
4073         if (wpa_s->ap_iface) {
4074                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4075                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4076                         wpabuf_free(beacon_ies);
4077                         wpabuf_free(proberesp_ies);
4078                         return;
4079                 }
4080                 if (beacon_ies) {
4081                         wpabuf_free(hapd->p2p_beacon_ie);
4082                         hapd->p2p_beacon_ie = beacon_ies;
4083                 }
4084                 wpabuf_free(hapd->p2p_probe_resp_ie);
4085                 hapd->p2p_probe_resp_ie = proberesp_ies;
4086         } else {
4087                 wpabuf_free(beacon_ies);
4088                 wpabuf_free(proberesp_ies);
4089         }
4090         wpa_supplicant_ap_update_beacon(wpa_s);
4091 }
4092
4093
4094 static void wpas_p2p_idle_update(void *ctx, int idle)
4095 {
4096         struct wpa_supplicant *wpa_s = ctx;
4097         if (!wpa_s->ap_iface)
4098                 return;
4099         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4100         if (idle)
4101                 wpas_p2p_set_group_idle_timeout(wpa_s);
4102         else
4103                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4104 }
4105
4106
4107 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4108                                        struct wpa_ssid *ssid)
4109 {
4110         struct p2p_group *group;
4111         struct p2p_group_config *cfg;
4112
4113         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4114                 return NULL;
4115         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4116                 return NULL;
4117
4118         cfg = os_zalloc(sizeof(*cfg));
4119         if (cfg == NULL)
4120                 return NULL;
4121
4122         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4123                 cfg->persistent_group = 2;
4124         else if (ssid->p2p_persistent_group)
4125                 cfg->persistent_group = 1;
4126         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4127         if (wpa_s->max_stations &&
4128             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4129                 cfg->max_clients = wpa_s->max_stations;
4130         else
4131                 cfg->max_clients = wpa_s->conf->max_num_sta;
4132         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4133         cfg->ssid_len = ssid->ssid_len;
4134         cfg->cb_ctx = wpa_s;
4135         cfg->ie_update = wpas_p2p_ie_update;
4136         cfg->idle_update = wpas_p2p_idle_update;
4137
4138         group = p2p_group_init(wpa_s->global->p2p, cfg);
4139         if (group == NULL)
4140                 os_free(cfg);
4141         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4142                 p2p_group_notif_formation_done(group);
4143         wpa_s->p2p_group = group;
4144         return group;
4145 }
4146
4147
4148 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4149                           int registrar)
4150 {
4151         struct wpa_ssid *ssid = wpa_s->current_ssid;
4152
4153         if (!wpa_s->p2p_in_provisioning) {
4154                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4155                            "provisioning not in progress");
4156                 return;
4157         }
4158
4159         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4160                 u8 go_dev_addr[ETH_ALEN];
4161                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4162                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4163                                           ssid->ssid_len);
4164                 /* Clear any stored provisioning info */
4165                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4166         }
4167
4168         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4169                              NULL);
4170         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4171                 /*
4172                  * Use a separate timeout for initial data connection to
4173                  * complete to allow the group to be removed automatically if
4174                  * something goes wrong in this step before the P2P group idle
4175                  * timeout mechanism is taken into use.
4176                  */
4177                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4178                                        wpas_p2p_group_formation_timeout,
4179                                        wpa_s->parent, NULL);
4180         }
4181         if (wpa_s->global->p2p)
4182                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4183         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4184                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4185         wpas_group_formation_completed(wpa_s, 1);
4186 }
4187
4188
4189 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4190                          struct wps_event_fail *fail)
4191 {
4192         if (!wpa_s->p2p_in_provisioning) {
4193                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4194                            "provisioning not in progress");
4195                 return;
4196         }
4197
4198         if (wpa_s->go_params) {
4199                 p2p_clear_provisioning_info(
4200                         wpa_s->global->p2p,
4201                         wpa_s->go_params->peer_device_addr);
4202         }
4203
4204         wpas_notify_p2p_wps_failed(wpa_s, fail);
4205 }
4206
4207
4208 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4209                        const char *config_method,
4210                        enum wpas_p2p_prov_disc_use use)
4211 {
4212         u16 config_methods;
4213
4214         wpa_s->p2p_fallback_to_go_neg = 0;
4215         wpa_s->pending_pd_use = NORMAL_PD;
4216         if (os_strncmp(config_method, "display", 7) == 0)
4217                 config_methods = WPS_CONFIG_DISPLAY;
4218         else if (os_strncmp(config_method, "keypad", 6) == 0)
4219                 config_methods = WPS_CONFIG_KEYPAD;
4220         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4221                  os_strncmp(config_method, "pushbutton", 10) == 0)
4222                 config_methods = WPS_CONFIG_PUSHBUTTON;
4223         else {
4224                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4225                 return -1;
4226         }
4227
4228         if (use == WPAS_P2P_PD_AUTO) {
4229                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4230                 wpa_s->pending_pd_config_methods = config_methods;
4231                 wpa_s->p2p_auto_pd = 1;
4232                 wpa_s->p2p_auto_join = 0;
4233                 wpa_s->pending_pd_before_join = 0;
4234                 wpa_s->auto_pd_scan_retry = 0;
4235                 wpas_p2p_stop_find(wpa_s);
4236                 wpa_s->p2p_join_scan_count = 0;
4237                 os_get_time(&wpa_s->p2p_auto_started);
4238                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4239                            wpa_s->p2p_auto_started.sec,
4240                            wpa_s->p2p_auto_started.usec);
4241                 wpas_p2p_join_scan(wpa_s, NULL);
4242                 return 0;
4243         }
4244
4245         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4246                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4247                                                  config_methods,
4248                                                  use == WPAS_P2P_PD_FOR_JOIN);
4249         }
4250
4251         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4252                 return -1;
4253
4254         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4255                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4256                                  0);
4257 }
4258
4259
4260 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4261                               char *end)
4262 {
4263         return p2p_scan_result_text(ies, ies_len, buf, end);
4264 }
4265
4266
4267 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4268 {
4269         if (!wpa_s->pending_action_tx)
4270                 return;
4271
4272         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4273                    "operation request");
4274         wpabuf_free(wpa_s->pending_action_tx);
4275         wpa_s->pending_action_tx = NULL;
4276 }
4277
4278
4279 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4280                   enum p2p_discovery_type type,
4281                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4282                   const u8 *dev_id, unsigned int search_delay)
4283 {
4284         wpas_p2p_clear_pending_action_tx(wpa_s);
4285         wpa_s->p2p_long_listen = 0;
4286
4287         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4288                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4289
4290         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4291             wpa_s->p2p_in_provisioning)
4292                 return -1;
4293
4294         wpa_supplicant_cancel_sched_scan(wpa_s);
4295
4296         return p2p_find(wpa_s->global->p2p, timeout, type,
4297                         num_req_dev_types, req_dev_types, dev_id,
4298                         search_delay);
4299 }
4300
4301
4302 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4303 {
4304         wpas_p2p_clear_pending_action_tx(wpa_s);
4305         wpa_s->p2p_long_listen = 0;
4306         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4307         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4308         wpa_s->global->p2p_cb_on_scan_complete = 0;
4309
4310         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4311                 wpa_drv_p2p_stop_find(wpa_s);
4312                 return;
4313         }
4314
4315         if (wpa_s->global->p2p)
4316                 p2p_stop_find(wpa_s->global->p2p);
4317
4318         wpas_p2p_remove_pending_group_interface(wpa_s);
4319 }
4320
4321
4322 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4323 {
4324         struct wpa_supplicant *wpa_s = eloop_ctx;
4325         wpa_s->p2p_long_listen = 0;
4326 }
4327
4328
4329 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4330 {
4331         int res;
4332
4333         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4334                 return -1;
4335
4336         wpa_supplicant_cancel_sched_scan(wpa_s);
4337         wpas_p2p_clear_pending_action_tx(wpa_s);
4338
4339         if (timeout == 0) {
4340                 /*
4341                  * This is a request for unlimited Listen state. However, at
4342                  * least for now, this is mapped to a Listen state for one
4343                  * hour.
4344                  */
4345                 timeout = 3600;
4346         }
4347         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4348         wpa_s->p2p_long_listen = 0;
4349
4350         /*
4351          * Stop previous find/listen operation to avoid trying to request a new
4352          * remain-on-channel operation while the driver is still running the
4353          * previous one.
4354          */
4355         if (wpa_s->global->p2p)
4356                 p2p_stop_find(wpa_s->global->p2p);
4357
4358         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4359         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4360                 wpa_s->p2p_long_listen = timeout * 1000;
4361                 eloop_register_timeout(timeout, 0,
4362                                        wpas_p2p_long_listen_timeout,
4363                                        wpa_s, NULL);
4364         }
4365
4366         return res;
4367 }
4368
4369
4370 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4371                           u8 *buf, size_t len, int p2p_group)
4372 {
4373         struct wpabuf *p2p_ie;
4374         int ret;
4375
4376         if (wpa_s->global->p2p_disabled)
4377                 return -1;
4378         if (wpa_s->global->p2p == NULL)
4379                 return -1;
4380         if (bss == NULL)
4381                 return -1;
4382
4383         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4384         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4385                                p2p_group, p2p_ie);
4386         wpabuf_free(p2p_ie);
4387
4388         return ret;
4389 }
4390
4391
4392 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4393                           const u8 *dst, const u8 *bssid,
4394                           const u8 *ie, size_t ie_len, int ssi_signal)
4395 {
4396         if (wpa_s->global->p2p_disabled)
4397                 return 0;
4398         if (wpa_s->global->p2p == NULL)
4399                 return 0;
4400
4401         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4402                                  ie, ie_len)) {
4403         case P2P_PREQ_NOT_P2P:
4404                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4405                                  ssi_signal);
4406                 /* fall through */
4407         case P2P_PREQ_MALFORMED:
4408         case P2P_PREQ_NOT_LISTEN:
4409         case P2P_PREQ_NOT_PROCESSED:
4410         default: /* make gcc happy */
4411                 return 0;
4412         case P2P_PREQ_PROCESSED:
4413                 return 1;
4414         }
4415 }
4416
4417
4418 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4419                         const u8 *sa, const u8 *bssid,
4420                         u8 category, const u8 *data, size_t len, int freq)
4421 {
4422         if (wpa_s->global->p2p_disabled)
4423                 return;
4424         if (wpa_s->global->p2p == NULL)
4425                 return;
4426
4427         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4428                       freq);
4429 }
4430
4431
4432 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4433 {
4434         if (wpa_s->global->p2p_disabled)
4435                 return;
4436         if (wpa_s->global->p2p == NULL)
4437                 return;
4438
4439         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4440 }
4441
4442
4443 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4444 {
4445         p2p_group_deinit(wpa_s->p2p_group);
4446         wpa_s->p2p_group = NULL;
4447
4448         wpa_s->ap_configured_cb = NULL;
4449         wpa_s->ap_configured_cb_ctx = NULL;
4450         wpa_s->ap_configured_cb_data = NULL;
4451         wpa_s->connect_without_scan = NULL;
4452 }
4453
4454
4455 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4456 {
4457         wpa_s->p2p_long_listen = 0;
4458
4459         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4460                 return wpa_drv_p2p_reject(wpa_s, addr);
4461
4462         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4463                 return -1;
4464
4465         return p2p_reject(wpa_s->global->p2p, addr);
4466 }
4467
4468
4469 /* Invite to reinvoke a persistent group */
4470 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4471                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4472                     int ht40)
4473 {
4474         enum p2p_invite_role role;
4475         u8 *bssid = NULL;
4476 #ifdef ANDROID_P2P
4477         int force_freq = 0, oper_freq = 0;
4478 #endif
4479
4480         wpa_s->p2p_persistent_go_freq = freq;
4481         wpa_s->p2p_go_ht40 = !!ht40;
4482         if (ssid->mode == WPAS_MODE_P2P_GO) {
4483                 role = P2P_INVITE_ROLE_GO;
4484                 if (peer_addr == NULL) {
4485                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4486                                    "address in invitation command");
4487                         return -1;
4488                 }
4489                 if (wpas_p2p_create_iface(wpa_s)) {
4490                         if (wpas_p2p_add_group_interface(wpa_s,
4491                                                          WPA_IF_P2P_GO) < 0) {
4492                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4493                                            "allocate a new interface for the "
4494                                            "group");
4495                                 return -1;
4496                         }
4497                         bssid = wpa_s->pending_interface_addr;
4498                 } else
4499                         bssid = wpa_s->own_addr;
4500         } else {
4501                 role = P2P_INVITE_ROLE_CLIENT;
4502                 peer_addr = ssid->bssid;
4503         }
4504         wpa_s->pending_invite_ssid_id = ssid->id;
4505
4506 #ifdef ANDROID_P2P
4507         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
4508             wpa_s->assoc_freq)
4509                 oper_freq = wpa_s->assoc_freq;
4510         else {
4511                 oper_freq = wpa_drv_shared_freq(wpa_s);
4512                 if (oper_freq < 0)
4513                         oper_freq = 0;
4514         }
4515
4516         if (freq > 0) {
4517                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
4518                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4519                                    "(%u MHz) is not supported for P2P uses",
4520                                    freq);
4521                         return -3;
4522                 }
4523
4524                 if (oper_freq > 0 && freq != oper_freq &&
4525                     !(wpa_s->drv_flags &
4526                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
4527                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
4528                                    "on %u MHz while connected on another "
4529                                    "channel (%u MHz)", freq, oper_freq);
4530                         return -2;
4531                 }
4532                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4533                            "requested channel (%u MHz)", freq);
4534                 force_freq = freq;
4535         } else if (oper_freq > 0 &&
4536                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
4537                 if (!(wpa_s->drv_flags &
4538                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
4539                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
4540                                    "while connected on non-P2P supported "
4541                                    "channel (%u MHz)", oper_freq);
4542                         return -2;
4543                 }
4544                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
4545                            "(%u MHz) not available for P2P - try to use "
4546                            "another channel", oper_freq);
4547                 force_freq = 0;
4548         } else if (oper_freq > 0) {
4549                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4550                            "channel we are already using (%u MHz) on another "
4551                            "interface", oper_freq);
4552                 force_freq = oper_freq;
4553         }
4554 #endif
4555         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4556                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4557                                           ssid->ssid, ssid->ssid_len,
4558                                           go_dev_addr, 1);
4559
4560         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4561                 return -1;
4562
4563 #ifdef ANDROID_P2P
4564         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4565                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 1);
4566 #else
4567         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4568                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4569 #endif
4570 }
4571
4572
4573 /* Invite to join an active group */
4574 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4575                           const u8 *peer_addr, const u8 *go_dev_addr)
4576 {
4577         struct wpa_global *global = wpa_s->global;
4578         enum p2p_invite_role role;
4579         u8 *bssid = NULL;
4580         struct wpa_ssid *ssid;
4581         int persistent;
4582
4583         wpa_s->p2p_persistent_go_freq = 0;
4584         wpa_s->p2p_go_ht40 = 0;
4585
4586         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4587                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4588                         break;
4589         }
4590         if (wpa_s == NULL) {
4591                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4592                 return -1;
4593         }
4594
4595         ssid = wpa_s->current_ssid;
4596         if (ssid == NULL) {
4597                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4598                            "invitation");
4599                 return -1;
4600         }
4601
4602         persistent = ssid->p2p_persistent_group &&
4603                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4604                                         ssid->ssid, ssid->ssid_len);
4605
4606         if (ssid->mode == WPAS_MODE_P2P_GO) {
4607                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4608                 bssid = wpa_s->own_addr;
4609                 if (go_dev_addr == NULL)
4610                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4611         } else {
4612                 role = P2P_INVITE_ROLE_CLIENT;
4613                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4614                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4615                                    "invite to current group");
4616                         return -1;
4617                 }
4618                 bssid = wpa_s->bssid;
4619                 if (go_dev_addr == NULL &&
4620                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4621                         go_dev_addr = wpa_s->go_dev_addr;
4622         }
4623         wpa_s->parent->pending_invite_ssid_id = -1;
4624
4625         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4626                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4627                                           ssid->ssid, ssid->ssid_len,
4628                                           go_dev_addr, persistent);
4629
4630         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4631                 return -1;
4632
4633         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4634                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4635                           go_dev_addr, persistent);
4636 }
4637
4638
4639 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4640 {
4641         struct wpa_ssid *ssid = wpa_s->current_ssid;
4642         const char *ssid_txt;
4643         u8 go_dev_addr[ETH_ALEN];
4644         int network_id = -1;
4645         int persistent;
4646         int freq;
4647
4648         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4649                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4650                                      wpa_s->parent, NULL);
4651         }
4652
4653         if (!wpa_s->show_group_started || !ssid)
4654                 goto done;
4655
4656         wpa_s->show_group_started = 0;
4657
4658         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4659         os_memset(go_dev_addr, 0, ETH_ALEN);
4660         if (ssid->bssid_set)
4661                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4662         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4663                                                ssid->ssid_len);
4664         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4665
4666         if (wpa_s->global->p2p_group_formation == wpa_s)
4667                 wpa_s->global->p2p_group_formation = NULL;
4668
4669         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4670                 (int) wpa_s->assoc_freq;
4671         if (ssid->passphrase == NULL && ssid->psk_set) {
4672                 char psk[65];
4673                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4674                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4675                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4676                         MACSTR "%s",
4677                         wpa_s->ifname, ssid_txt, freq, psk,
4678                         MAC2STR(go_dev_addr),
4679                         persistent ? " [PERSISTENT]" : "");
4680         } else {
4681                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4682                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4683                         "go_dev_addr=" MACSTR "%s",
4684                         wpa_s->ifname, ssid_txt, freq,
4685                         ssid->passphrase ? ssid->passphrase : "",
4686                         MAC2STR(go_dev_addr),
4687                         persistent ? " [PERSISTENT]" : "");
4688         }
4689
4690         if (persistent)
4691                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4692                                                              ssid, go_dev_addr);
4693         if (network_id < 0)
4694                 network_id = ssid->id;
4695         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4696
4697 done:
4698         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4699             wpa_s->global->p2p != NULL) {
4700                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4701                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4702                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4703                                 "continued after successful connection");
4704                         p2p_increase_search_delay(
4705                                 wpa_s->global->p2p,
4706                                 wpas_p2p_search_delay(wpa_s));
4707                 }
4708         }
4709 }
4710
4711
4712 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4713                           u32 interval1, u32 duration2, u32 interval2)
4714 {
4715         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4716                 return -1;
4717         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4718                 return -1;
4719
4720         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4721             wpa_s->current_ssid == NULL ||
4722             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4723                 return -1;
4724
4725         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4726                                 wpa_s->own_addr, wpa_s->assoc_freq,
4727                                 duration1, interval1, duration2, interval2);
4728 }
4729
4730
4731 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4732                         unsigned int interval)
4733 {
4734         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4735                 return -1;
4736
4737         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4738                 return -1;
4739
4740         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4741 }
4742
4743
4744 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4745 {
4746         return wpa_s->current_ssid != NULL &&
4747                 wpa_s->current_ssid->p2p_group &&
4748                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4749 }
4750
4751
4752 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4753 {
4754         struct wpa_supplicant *wpa_s = eloop_ctx;
4755
4756         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4757                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4758                            "disabled");
4759                 return;
4760         }
4761
4762         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4763                    "group");
4764         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4765 }
4766
4767
4768 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4769 {
4770         int timeout;
4771
4772         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4773                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4774
4775         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4776                 return;
4777
4778         timeout = wpa_s->conf->p2p_group_idle;
4779         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4780             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4781             timeout = P2P_MAX_CLIENT_IDLE;
4782
4783         if (timeout == 0)
4784                 return;
4785
4786         if (timeout < 0) {
4787                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4788                         timeout = 0; /* special client mode no-timeout */
4789                 else
4790                         return;
4791         }
4792
4793         if (wpa_s->p2p_in_provisioning) {
4794                 /*
4795                  * Use the normal group formation timeout during the
4796                  * provisioning phase to avoid terminating this process too
4797                  * early due to group idle timeout.
4798                  */
4799                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4800                            "during provisioning");
4801                 return;
4802         }
4803 #ifndef ANDROID_P2P
4804         if (wpa_s->show_group_started) {
4805                 /*
4806                  * Use the normal group formation timeout between the end of
4807                  * the provisioning phase and completion of 4-way handshake to
4808                  * avoid terminating this process too early due to group idle
4809                  * timeout.
4810                  */
4811                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4812                            "while waiting for initial 4-way handshake to "
4813                            "complete");
4814                 return;
4815         }
4816 #endif
4817
4818         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4819                    timeout);
4820         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4821                                wpa_s, NULL);
4822 }
4823
4824
4825 /* Returns 1 if the interface was removed */
4826 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4827                           u16 reason_code, const u8 *ie, size_t ie_len,
4828                           int locally_generated)
4829 {
4830         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4831                 return 0;
4832         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4833                 return 0;
4834
4835         if (!locally_generated)
4836                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4837                                  ie_len);
4838
4839         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4840             wpa_s->current_ssid &&
4841             wpa_s->current_ssid->p2p_group &&
4842             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4843                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4844                            "session is ending");
4845                 if (wpas_p2p_group_delete(wpa_s,
4846                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4847                     > 0)
4848                         return 1;
4849         }
4850
4851         return 0;
4852 }
4853
4854
4855 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4856                              u16 reason_code, const u8 *ie, size_t ie_len,
4857                              int locally_generated)
4858 {
4859         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4860                 return;
4861         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4862                 return;
4863
4864         if (!locally_generated)
4865                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4866                                    ie_len);
4867 }
4868
4869
4870 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4871 {
4872         struct p2p_data *p2p = wpa_s->global->p2p;
4873
4874         if (p2p == NULL)
4875                 return;
4876
4877         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4878                 return;
4879
4880         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4881                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4882
4883         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4884                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4885
4886         if (wpa_s->wps &&
4887             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4888                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4889
4890         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4891                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4892
4893         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4894                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4895                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4896                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4897                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4898         }
4899
4900         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4901                 p2p_set_sec_dev_types(p2p,
4902                                       (void *) wpa_s->conf->sec_device_type,
4903                                       wpa_s->conf->num_sec_device_types);
4904
4905         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4906                 int i;
4907                 p2p_remove_wps_vendor_extensions(p2p);
4908                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4909                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4910                                 continue;
4911                         p2p_add_wps_vendor_extension(
4912                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4913                 }
4914         }
4915
4916         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4917             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4918                 char country[3];
4919                 country[0] = wpa_s->conf->country[0];
4920                 country[1] = wpa_s->conf->country[1];
4921                 country[2] = 0x04;
4922                 p2p_set_country(p2p, country);
4923         }
4924
4925         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4926                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4927                                      wpa_s->conf->p2p_ssid_postfix ?
4928                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4929                                      0);
4930         }
4931
4932         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4933                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4934
4935         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4936                 u8 reg_class, channel;
4937                 int ret;
4938                 unsigned int r;
4939                 if (wpa_s->conf->p2p_listen_reg_class &&
4940                     wpa_s->conf->p2p_listen_channel) {
4941                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4942                         channel = wpa_s->conf->p2p_listen_channel;
4943                 } else {
4944                         reg_class = 81;
4945                         /*
4946                          * Pick one of the social channels randomly as the
4947                          * listen channel.
4948                          */
4949                         os_get_random((u8 *) &r, sizeof(r));
4950                         channel = 1 + (r % 3) * 5;
4951                 }
4952                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4953                 if (ret)
4954                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4955                                    "failed: %d", ret);
4956         }
4957         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4958                 u8 op_reg_class, op_channel, cfg_op_channel;
4959                 int ret = 0;
4960                 unsigned int r;
4961                 if (wpa_s->conf->p2p_oper_reg_class &&
4962                     wpa_s->conf->p2p_oper_channel) {
4963                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4964                         op_channel = wpa_s->conf->p2p_oper_channel;
4965                         cfg_op_channel = 1;
4966                 } else {
4967                         op_reg_class = 81;
4968                         /*
4969                          * Use random operation channel from (1, 6, 11)
4970                          *if no other preference is indicated.
4971                          */
4972                         os_get_random((u8 *) &r, sizeof(r));
4973                         op_channel = 1 + (r % 3) * 5;
4974                         cfg_op_channel = 0;
4975                 }
4976                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4977                                            cfg_op_channel);
4978                 if (ret)
4979                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4980                                    "failed: %d", ret);
4981         }
4982
4983         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4984                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4985                                       wpa_s->conf->p2p_pref_chan) < 0) {
4986                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4987                                    "update failed");
4988                 }
4989         }
4990 }
4991
4992
4993 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4994                      int duration)
4995 {
4996         if (!wpa_s->ap_iface)
4997                 return -1;
4998         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4999                                    duration);
5000 }
5001
5002
5003 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
5004 {
5005         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5006                 return -1;
5007         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5008                 return -1;
5009
5010         wpa_s->global->cross_connection = enabled;
5011         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
5012
5013         if (!enabled) {
5014                 struct wpa_supplicant *iface;
5015
5016                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
5017                 {
5018                         if (iface->cross_connect_enabled == 0)
5019                                 continue;
5020
5021                         iface->cross_connect_enabled = 0;
5022                         iface->cross_connect_in_use = 0;
5023                         wpa_msg(iface->parent, MSG_INFO,
5024                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5025                                 iface->ifname, iface->cross_connect_uplink);
5026                 }
5027         }
5028
5029         return 0;
5030 }
5031
5032
5033 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
5034 {
5035         struct wpa_supplicant *iface;
5036
5037         if (!uplink->global->cross_connection)
5038                 return;
5039
5040         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5041                 if (!iface->cross_connect_enabled)
5042                         continue;
5043                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5044                     0)
5045                         continue;
5046                 if (iface->ap_iface == NULL)
5047                         continue;
5048                 if (iface->cross_connect_in_use)
5049                         continue;
5050
5051                 iface->cross_connect_in_use = 1;
5052                 wpa_msg(iface->parent, MSG_INFO,
5053                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5054                         iface->ifname, iface->cross_connect_uplink);
5055         }
5056 }
5057
5058
5059 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5060 {
5061         struct wpa_supplicant *iface;
5062
5063         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5064                 if (!iface->cross_connect_enabled)
5065                         continue;
5066                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5067                     0)
5068                         continue;
5069                 if (!iface->cross_connect_in_use)
5070                         continue;
5071
5072                 wpa_msg(iface->parent, MSG_INFO,
5073                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5074                         iface->ifname, iface->cross_connect_uplink);
5075                 iface->cross_connect_in_use = 0;
5076         }
5077 }
5078
5079
5080 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5081 {
5082         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5083             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5084             wpa_s->cross_connect_disallowed)
5085                 wpas_p2p_disable_cross_connect(wpa_s);
5086         else
5087                 wpas_p2p_enable_cross_connect(wpa_s);
5088         if (!wpa_s->ap_iface &&
5089             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5090                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5091 }
5092
5093
5094 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5095 {
5096         wpas_p2p_disable_cross_connect(wpa_s);
5097         if (!wpa_s->ap_iface &&
5098             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5099                                          wpa_s, NULL))
5100                 wpas_p2p_set_group_idle_timeout(wpa_s);
5101 }
5102
5103
5104 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5105 {
5106         struct wpa_supplicant *iface;
5107
5108         if (!wpa_s->global->cross_connection)
5109                 return;
5110
5111         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5112                 if (iface == wpa_s)
5113                         continue;
5114                 if (iface->drv_flags &
5115                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5116                         continue;
5117                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5118                         continue;
5119
5120                 wpa_s->cross_connect_enabled = 1;
5121                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5122                            sizeof(wpa_s->cross_connect_uplink));
5123                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5124                            "%s to %s whenever uplink is available",
5125                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5126
5127                 if (iface->ap_iface || iface->current_ssid == NULL ||
5128                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5129                     iface->cross_connect_disallowed ||
5130                     iface->wpa_state != WPA_COMPLETED)
5131                         break;
5132
5133                 wpa_s->cross_connect_in_use = 1;
5134                 wpa_msg(wpa_s->parent, MSG_INFO,
5135                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5136                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5137                 break;
5138         }
5139 }
5140
5141
5142 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5143 {
5144         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5145             !wpa_s->p2p_in_provisioning)
5146                 return 0; /* not P2P client operation */
5147
5148         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5149                    "session overlap");
5150         if (wpa_s != wpa_s->parent)
5151                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5152
5153         if (wpa_s->global->p2p)
5154                 p2p_group_formation_failed(wpa_s->global->p2p);
5155
5156         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5157                              wpa_s->parent, NULL);
5158
5159         wpas_group_formation_completed(wpa_s, 0);
5160         return 1;
5161 }
5162
5163
5164 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5165 {
5166         struct p2p_channels chan;
5167
5168         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5169                 return;
5170
5171         os_memset(&chan, 0, sizeof(chan));
5172         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5173                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5174                            "channel list");
5175                 return;
5176         }
5177
5178         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5179 }
5180
5181
5182 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5183 {
5184         struct wpa_global *global = wpa_s->global;
5185         int found = 0;
5186         const u8 *peer;
5187
5188         if (global->p2p == NULL)
5189                 return -1;
5190
5191         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5192
5193         if (wpa_s->pending_interface_name[0] &&
5194             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5195                 found = 1;
5196
5197         peer = p2p_get_go_neg_peer(global->p2p);
5198         if (peer) {
5199                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5200                            MACSTR, MAC2STR(peer));
5201                 p2p_unauthorize(global->p2p, peer);
5202                 found = 1;
5203         }
5204
5205         wpas_p2p_stop_find(wpa_s);
5206
5207         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5208                 if (wpa_s == global->p2p_group_formation &&
5209                     (wpa_s->p2p_in_provisioning ||
5210                      wpa_s->parent->pending_interface_type ==
5211                      WPA_IF_P2P_CLIENT)) {
5212                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5213                                    "formation found - cancelling",
5214                                    wpa_s->ifname);
5215                         found = 1;
5216                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5217                                              wpa_s->parent, NULL);
5218                         if (wpa_s->p2p_in_provisioning) {
5219                                 wpas_group_formation_completed(wpa_s, 0);
5220                                 break;
5221                         }
5222                         wpas_p2p_group_delete(wpa_s,
5223                                               P2P_GROUP_REMOVAL_REQUESTED);
5224                         break;
5225                 }
5226         }
5227
5228         if (!found) {
5229                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5230                 return -1;
5231         }
5232
5233         return 0;
5234 }
5235
5236
5237 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5238 {
5239         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5240                 return;
5241
5242         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5243                    "being available anymore");
5244         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5245 }
5246
5247
5248 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5249                                    int freq_24, int freq_5, int freq_overall)
5250 {
5251         struct p2p_data *p2p = wpa_s->global->p2p;
5252         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5253                 return;
5254         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5255 }
5256
5257
5258 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5259 {
5260         u8 peer[ETH_ALEN];
5261         struct p2p_data *p2p = wpa_s->global->p2p;
5262
5263         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5264                 return -1;
5265
5266         if (hwaddr_aton(addr, peer))
5267                 return -1;
5268
5269         return p2p_unauthorize(p2p, peer);
5270 }
5271
5272
5273 /**
5274  * wpas_p2p_disconnect - Disconnect from a P2P Group
5275  * @wpa_s: Pointer to wpa_supplicant data
5276  * Returns: 0 on success, -1 on failure
5277  *
5278  * This can be used to disconnect from a group in which the local end is a P2P
5279  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5280  * virtual network interface was created for this group, that interface will be
5281  * removed. Otherwise, only the configured P2P group network will be removed
5282  * from the interface.
5283  */
5284 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5285 {
5286
5287         if (wpa_s == NULL)
5288                 return -1;
5289
5290         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5291                 -1 : 0;
5292 }
5293
5294
5295 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5296 {
5297         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5298                 return 0;
5299
5300         return p2p_in_progress(wpa_s->global->p2p);
5301 }
5302
5303
5304 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5305                               struct wpa_ssid *ssid)
5306 {
5307         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5308             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5309                                  wpa_s->parent, NULL) > 0) {
5310                 /**
5311                  * Remove the network by scheduling the group formation
5312                  * timeout to happen immediately. The teardown code
5313                  * needs to be scheduled to run asynch later so that we
5314                  * don't delete data from under ourselves unexpectedly.
5315                  * Calling wpas_p2p_group_formation_timeout directly
5316                  * causes a series of crashes in WPS failure scenarios.
5317                  */
5318                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5319                            "P2P group network getting removed");
5320                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5321                                        wpa_s->parent, NULL);
5322         }
5323 }
5324
5325
5326 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5327                                           const u8 *addr, const u8 *ssid,
5328                                           size_t ssid_len)
5329 {
5330         struct wpa_ssid *s;
5331         size_t i;
5332
5333         for (s = wpa_s->conf->ssid; s; s = s->next) {
5334                 if (s->disabled != 2)
5335                         continue;
5336                 if (ssid &&
5337                     (ssid_len != s->ssid_len ||
5338                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5339                         continue;
5340                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5341                         return s; /* peer is GO in the persistent group */
5342                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5343                         continue;
5344                 for (i = 0; i < s->num_p2p_clients; i++) {
5345                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5346                                       addr, ETH_ALEN) == 0)
5347                                 return s; /* peer is P2P client in persistent
5348                                            * group */
5349                 }
5350         }
5351
5352         return NULL;
5353 }
5354
5355
5356 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5357                                        const u8 *addr)
5358 {
5359         if (addr == NULL)
5360                 return;
5361         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5362 }
5363
5364
5365 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5366                                         int group_added)
5367 {
5368         struct wpa_supplicant *group = wpa_s;
5369         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5370         if (wpa_s->global->p2p_group_formation)
5371                 group = wpa_s->global->p2p_group_formation;
5372         wpa_s = wpa_s->parent;
5373         offchannel_send_action_done(wpa_s);
5374         if (group_added)
5375                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5376         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5377         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5378                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5379                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5380                          wpa_s->p2p_persistent_id,
5381                          wpa_s->p2p_pd_before_go_neg,
5382                          wpa_s->p2p_go_ht40);
5383 }
5384
5385
5386 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5387 {
5388         if (!wpa_s->p2p_fallback_to_go_neg ||
5389             wpa_s->p2p_in_provisioning <= 5)
5390                 return 0;
5391
5392         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5393                 return 0; /* peer operating as a GO */
5394
5395         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5396                 "fallback to GO Negotiation");
5397         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5398
5399         return 1;
5400 }
5401
5402
5403 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5404 {
5405         const char *rn, *rn2;
5406         struct wpa_supplicant *ifs;
5407
5408         if (wpa_s->wpa_state > WPA_SCANNING) {
5409                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5410                         "concurrent operation",
5411                         P2P_CONCURRENT_SEARCH_DELAY);
5412                 return P2P_CONCURRENT_SEARCH_DELAY;
5413         }
5414
5415         if (!wpa_s->driver->get_radio_name)
5416                 return 0;
5417         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5418         if (rn == NULL || rn[0] == '\0')
5419                 return 0;
5420
5421         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5422                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5423                         continue;
5424
5425                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5426                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5427                         continue;
5428                 if (ifs->wpa_state > WPA_SCANNING) {
5429                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5430                                 "delay due to concurrent operation on "
5431                                 "interface %s",
5432                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5433                         return P2P_CONCURRENT_SEARCH_DELAY;
5434                 }
5435         }
5436
5437         return 0;
5438 }
5439
5440 #ifdef ANDROID_P2P
5441 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5442 {
5443         struct wpa_supplicant *iface = NULL;
5444         struct p2p_data *p2p = wpa_s->global->p2p;
5445
5446         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5447                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5448                         (iface->current_ssid->frequency != freq)) {
5449
5450                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5451                                         /* Try to see whether we can move the GO. If it
5452                                          * is not possible, remove the GO interface
5453                                          */
5454                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5455                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5456                                                         iface->current_ssid->frequency = freq;
5457                                                         continue;
5458                                         }
5459                         }
5460
5461                         /* If GO cannot be moved or if the conflicting interface is a
5462                          * P2P Client, remove the interface depending up on the connection
5463                          * priority */
5464                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5465                                 /* STA connection has priority over existing
5466                                  * P2P connection. So remove the interface */
5467                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5468                                                 "concurrent mode frequency conflict");
5469                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5470                         } else {
5471                                 /* Existing connection has the priority. Disable the newly
5472                  * selected network and let the application know about it.
5473                                  */
5474                                 return -1;
5475                         }
5476                 }
5477         }
5478         return 0;
5479 }
5480 #endif