wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "common/ieee802_11_common.h"
  20 #include "common/ieee802_11_defs.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "wps/wps_i.h"
  23 #include "p2p/p2p.h"
  24 #include "ap/hostapd.h"
  25 #include "ap/p2p_hostapd.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39
  40
  41 /*
  42  * How many times to try to scan to find the GO before giving up on join
  43  * request.
  44  */
  45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  46
  47
  48 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  49 static struct wpa_supplicant *
  50 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  51                          int go);
  52 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  53 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  54 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  55                          const u8 *dev_addr, enum p2p_wps_method wps_method);
  56 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  57 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  58 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  59 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  60
  61
  62 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  63                                       struct wpa_scan_results *scan_res)
  64 {
  65         size_t i;
  66
  67         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  68                 return;
  69
  70         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
  71                    (int) scan_res->num);
  72
  73         for (i = 0; i < scan_res->num; i++) {
  74                 struct wpa_scan_res *bss = scan_res->res[i];
  75                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
  76                                          bss->freq, bss->level,
  77                                          (const u8 *) (bss + 1),
  78                                          bss->ie_len) > 0)
  79                         break;
  80         }
  81
  82         p2p_scan_res_handled(wpa_s->global->p2p);
  83 }
  84
  85
  86 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
  87                          unsigned int num_req_dev_types,
  88                          const u8 *req_dev_types)
  89 {
  90         struct wpa_supplicant *wpa_s = ctx;
  91         struct wpa_driver_scan_params params;
  92         int ret;
  93         struct wpabuf *wps_ie, *ies;
  94         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
  95         size_t ielen;
  96
  97         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  98                 return -1;
  99
 100         os_memset(&params, 0, sizeof(params));
 101
 102         /* P2P Wildcard SSID */
 103         params.num_ssids = 1;
 104         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 105         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 106
 107         wpa_s->wps->dev.p2p = 1;
 108         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
 109                                         WPS_REQ_ENROLLEE,
 110                                         num_req_dev_types, req_dev_types);
 111         if (wps_ie == NULL)
 112                 return -1;
 113
 114         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 115         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 116         if (ies == NULL) {
 117                 wpabuf_free(wps_ie);
 118                 return -1;
 119         }
 120         wpabuf_put_buf(ies, wps_ie);
 121         wpabuf_free(wps_ie);
 122
 123         p2p_scan_ie(wpa_s->global->p2p, ies);
 124
 125         params.p2p_probe = 1;
 126         params.extra_ies = wpabuf_head(ies);
 127         params.extra_ies_len = wpabuf_len(ies);
 128
 129         switch (type) {
 130         case P2P_SCAN_SOCIAL:
 131                 params.freqs = social_channels;
 132                 break;
 133         case P2P_SCAN_FULL:
 134                 break;
 135         case P2P_SCAN_SPECIFIC:
 136                 social_channels[0] = freq;
 137                 social_channels[1] = 0;
 138                 params.freqs = social_channels;
 139                 break;
 140         case P2P_SCAN_SOCIAL_PLUS_ONE:
 141                 social_channels[3] = freq;
 142                 params.freqs = social_channels;
 143                 break;
 144         }
 145
 146         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 147         ret = wpa_drv_scan(wpa_s, &params);
 148
 149         wpabuf_free(ies);
 150
 151         if (ret < 0)
 152                 wpa_s->scan_res_handler = NULL;
 153
 154         return ret;
 155 }
 156
 157
 158 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 159 {
 160         switch (p2p_group_interface) {
 161         case P2P_GROUP_INTERFACE_PENDING:
 162                 return WPA_IF_P2P_GROUP;
 163         case P2P_GROUP_INTERFACE_GO:
 164                 return WPA_IF_P2P_GO;
 165         case P2P_GROUP_INTERFACE_CLIENT:
 166                 return WPA_IF_P2P_CLIENT;
 167         }
 168
 169         return WPA_IF_P2P_GROUP;
 170 }
 171
 172
 173 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 174                                                   const u8 *ssid,
 175                                                   size_t ssid_len, int *go)
 176 {
 177         struct wpa_ssid *s;
 178
 179         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 180                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 181                         if (s->disabled != 0 || !s->p2p_group ||
 182                             s->ssid_len != ssid_len ||
 183                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 184                                 continue;
 185                         if (s->mode == WPAS_MODE_P2P_GO &&
 186                             s != wpa_s->current_ssid)
 187                                 continue;
 188                         if (go)
 189                                 *go = s->mode == WPAS_MODE_P2P_GO;
 190                         return wpa_s;
 191                 }
 192         }
 193
 194         return NULL;
 195 }
 196
 197
 198 static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
 199 {
 200         struct wpa_ssid *ssid;
 201         char *gtype;
 202         const char *reason;
 203
 204         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
 205
 206         ssid = wpa_s->current_ssid;
 207         if (ssid == NULL) {
 208                 /*
 209                  * The current SSID was not known, but there may still be a
 210                  * pending P2P group interface waiting for provisioning.
 211                  */
 212                 ssid = wpa_s->conf->ssid;
 213                 while (ssid) {
 214                         if (ssid->p2p_group &&
 215                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 216                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 217                                 break;
 218                         ssid = ssid->next;
 219                 }
 220         }
 221         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 222                 gtype = "GO";
 223         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 224                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 225                 wpa_s->reassociate = 0;
 226                 wpa_s->disconnected = 1;
 227                 wpa_supplicant_deauthenticate(wpa_s,
 228                                               WLAN_REASON_DEAUTH_LEAVING);
 229                 gtype = "client";
 230         } else
 231                 gtype = "GO";
 232         if (wpa_s->cross_connect_in_use) {
 233                 wpa_s->cross_connect_in_use = 0;
 234                 wpa_msg(wpa_s->parent, MSG_INFO,
 235                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 236                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 237         }
 238         switch (wpa_s->removal_reason) {
 239         case P2P_GROUP_REMOVAL_REQUESTED:
 240                 reason = " reason=REQUESTED";
 241                 break;
 242         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 243                 reason = " reason=IDLE";
 244                 break;
 245         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 246                 reason = " reason=UNAVAILABLE";
 247                 break;
 248         default:
 249                 reason = "";
 250                 break;
 251         }
 252         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s%s",
 253                 wpa_s->ifname, gtype, reason);
 254
 255         if (ssid)
 256                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 257
 258         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 259                 struct wpa_global *global;
 260                 char *ifname;
 261                 enum wpa_driver_if_type type;
 262                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 263                         wpa_s->ifname);
 264                 global = wpa_s->global;
 265                 ifname = os_strdup(wpa_s->ifname);
 266                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 267                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s);
 268                 wpa_s = global->ifaces;
 269                 if (wpa_s && ifname)
 270                         wpa_drv_if_remove(wpa_s, type, ifname);
 271                 os_free(ifname);
 272                 return;
 273         }
 274
 275         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 276         if (ssid && (ssid->p2p_group ||
 277                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 278                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 279                 int id = ssid->id;
 280                 if (ssid == wpa_s->current_ssid) {
 281                         wpa_sm_set_config(wpa_s->wpa, NULL);
 282                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 283                         wpa_s->current_ssid = NULL;
 284                 }
 285                 /*
 286                  * Networks objects created during any P2P activities are not
 287                  * exposed out as they might/will confuse certain non-P2P aware
 288                  * applications since these network objects won't behave like
 289                  * regular ones.
 290                  *
 291                  * Likewise, we don't send out network removed signals for such
 292                  * network objects.
 293                  */
 294                 wpa_config_remove_network(wpa_s->conf, id);
 295                 wpa_supplicant_clear_status(wpa_s);
 296         } else {
 297                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 298                            "found");
 299         }
 300         wpa_supplicant_ap_deinit(wpa_s);
 301 }
 302
 303
 304 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 305                                      u8 *go_dev_addr,
 306                                      const u8 *ssid, size_t ssid_len)
 307 {
 308         struct wpa_bss *bss;
 309         const u8 *bssid;
 310         struct wpabuf *p2p;
 311         u8 group_capab;
 312         const u8 *addr;
 313
 314         if (wpa_s->go_params)
 315                 bssid = wpa_s->go_params->peer_interface_addr;
 316         else
 317                 bssid = wpa_s->bssid;
 318
 319         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 320         if (bss == NULL) {
 321                 u8 iface_addr[ETH_ALEN];
 322                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 323                                            iface_addr) == 0)
 324                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 325         }
 326         if (bss == NULL) {
 327                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 328                            "group is persistent - BSS " MACSTR " not found",
 329                            MAC2STR(bssid));
 330                 return 0;
 331         }
 332
 333         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 334         if (p2p == NULL) {
 335                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 336                            "group is persistent - BSS " MACSTR
 337                            " did not include P2P IE", MAC2STR(bssid));
 338                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 339                             (u8 *) (bss + 1), bss->ie_len);
 340                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 341                             ((u8 *) bss + 1) + bss->ie_len,
 342                             bss->beacon_ie_len);
 343                 return 0;
 344         }
 345
 346         group_capab = p2p_get_group_capab(p2p);
 347         addr = p2p_get_go_dev_addr(p2p);
 348         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 349                    "group_capab=0x%x", group_capab);
 350         if (addr) {
 351                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 352                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 353                            MAC2STR(addr));
 354         } else
 355                 os_memset(go_dev_addr, 0, ETH_ALEN);
 356         wpabuf_free(p2p);
 357
 358         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 359                    "go_dev_addr=" MACSTR,
 360                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 361
 362         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 363 }
 364
 365
 366 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 367                                            struct wpa_ssid *ssid,
 368                                            const u8 *go_dev_addr)
 369 {
 370         struct wpa_ssid *s;
 371         int changed = 0;
 372
 373         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 374                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 375         for (s = wpa_s->conf->ssid; s; s = s->next) {
 376                 if (s->disabled == 2 &&
 377                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 378                     s->ssid_len == ssid->ssid_len &&
 379                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 380                         break;
 381         }
 382
 383         if (s) {
 384                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 385                            "entry");
 386                 if (ssid->passphrase && !s->passphrase)
 387                         changed = 1;
 388                 else if (ssid->passphrase && s->passphrase &&
 389                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 390                         changed = 1;
 391         } else {
 392                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 393                            "entry");
 394                 changed = 1;
 395                 s = wpa_config_add_network(wpa_s->conf);
 396                 if (s == NULL)
 397                         return -1;
 398
 399                 /*
 400                  * Instead of network_added we emit persistent_group_added
 401                  * notification. Also to keep the defense checks in
 402                  * persistent_group obj registration method, we set the
 403                  * relevant flags in s to designate it as a persistent group.
 404                  */
 405                 s->p2p_group = 1;
 406                 s->p2p_persistent_group = 1;
 407                 wpas_notify_persistent_group_added(wpa_s, s);
 408                 wpa_config_set_network_defaults(s);
 409         }
 410
 411         s->p2p_group = 1;
 412         s->p2p_persistent_group = 1;
 413         s->disabled = 2;
 414         s->bssid_set = 1;
 415         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 416         s->mode = ssid->mode;
 417         s->auth_alg = WPA_AUTH_ALG_OPEN;
 418         s->key_mgmt = WPA_KEY_MGMT_PSK;
 419         s->proto = WPA_PROTO_RSN;
 420         s->pairwise_cipher = WPA_CIPHER_CCMP;
 421         s->export_keys = 1;
 422         if (ssid->passphrase) {
 423                 os_free(s->passphrase);
 424                 s->passphrase = os_strdup(ssid->passphrase);
 425         }
 426         if (ssid->psk_set) {
 427                 s->psk_set = 1;
 428                 os_memcpy(s->psk, ssid->psk, 32);
 429         }
 430         if (s->passphrase && !s->psk_set)
 431                 wpa_config_update_psk(s);
 432         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 433                 os_free(s->ssid);
 434                 s->ssid = os_malloc(ssid->ssid_len);
 435         }
 436         if (s->ssid) {
 437                 s->ssid_len = ssid->ssid_len;
 438                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 439         }
 440
 441 #ifndef CONFIG_NO_CONFIG_WRITE
 442         if (changed && wpa_s->conf->update_config &&
 443             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 444                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 445         }
 446 #endif /* CONFIG_NO_CONFIG_WRITE */
 447
 448         return s->id;
 449 }
 450
 451
 452 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 453                                            int success)
 454 {
 455         struct wpa_ssid *ssid;
 456         const char *ssid_txt;
 457         int client;
 458         int persistent;
 459         u8 go_dev_addr[ETH_ALEN];
 460         int network_id = -1;
 461
 462         /*
 463          * This callback is likely called for the main interface. Update wpa_s
 464          * to use the group interface if a new interface was created for the
 465          * group.
 466          */
 467         if (wpa_s->global->p2p_group_formation)
 468                 wpa_s = wpa_s->global->p2p_group_formation;
 469         wpa_s->global->p2p_group_formation = NULL;
 470         wpa_s->p2p_in_provisioning = 0;
 471
 472         if (!success) {
 473                 wpa_msg(wpa_s->parent, MSG_INFO,
 474                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 475                 wpas_p2p_group_delete(wpa_s);
 476                 return;
 477         }
 478
 479         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 480
 481         ssid = wpa_s->current_ssid;
 482         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 483                 ssid->mode = WPAS_MODE_P2P_GO;
 484                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 485                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 486         }
 487
 488         persistent = 0;
 489         if (ssid) {
 490                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 491                 client = ssid->mode == WPAS_MODE_INFRA;
 492                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 493                         persistent = ssid->p2p_persistent_group;
 494                         os_memcpy(go_dev_addr, wpa_s->parent->own_addr,
 495                                   ETH_ALEN);
 496                 } else
 497                         persistent = wpas_p2p_persistent_group(wpa_s,
 498                                                                go_dev_addr,
 499                                                                ssid->ssid,
 500                                                                ssid->ssid_len);
 501         } else {
 502                 ssid_txt = "";
 503                 client = wpa_s->p2p_group_interface ==
 504                         P2P_GROUP_INTERFACE_CLIENT;
 505                 os_memset(go_dev_addr, 0, ETH_ALEN);
 506         }
 507
 508         wpa_s->show_group_started = 0;
 509         if (client) {
 510                 /*
 511                  * Indicate event only after successfully completed 4-way
 512                  * handshake, i.e., when the interface is ready for data
 513                  * packets.
 514                  */
 515                 wpa_s->show_group_started = 1;
 516         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 517                 char psk[65];
 518                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 519                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 520                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 521                         "%s",
 522                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 523                         MAC2STR(go_dev_addr),
 524                         persistent ? " [PERSISTENT]" : "");
 525                 wpas_p2p_cross_connect_setup(wpa_s);
 526                 wpas_p2p_set_group_idle_timeout(wpa_s);
 527         } else {
 528                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 529                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 530                         "go_dev_addr=" MACSTR "%s",
 531                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 532                         ssid && ssid->passphrase ? ssid->passphrase : "",
 533                         MAC2STR(go_dev_addr),
 534                         persistent ? " [PERSISTENT]" : "");
 535                 wpas_p2p_cross_connect_setup(wpa_s);
 536                 wpas_p2p_set_group_idle_timeout(wpa_s);
 537         }
 538
 539         if (persistent)
 540                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 541                                                              ssid, go_dev_addr);
 542         if (network_id < 0 && ssid)
 543                 network_id = ssid->id;
 544         if (!client)
 545                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 546 }
 547
 548
 549 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 550                                            unsigned int freq,
 551                                            const u8 *dst, const u8 *src,
 552                                            const u8 *bssid,
 553                                            const u8 *data, size_t data_len,
 554                                            enum offchannel_send_action_result
 555                                            result)
 556 {
 557         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 558
 559         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 560                 return;
 561         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 562                 return;
 563
 564         switch (result) {
 565         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 566                 res = P2P_SEND_ACTION_SUCCESS;
 567                 break;
 568         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 569                 res = P2P_SEND_ACTION_NO_ACK;
 570                 break;
 571         case OFFCHANNEL_SEND_ACTION_FAILED:
 572                 res = P2P_SEND_ACTION_FAILED;
 573                 break;
 574         }
 575
 576         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 577
 578         if (wpa_s->pending_pd_before_join &&
 579             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 580              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 581                 wpa_s->pending_pd_before_join = 0;
 582                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 583                            "join-existing-group operation");
 584                 wpas_p2p_join_start(wpa_s);
 585         }
 586 }
 587
 588
 589 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 590                             const u8 *src, const u8 *bssid, const u8 *buf,
 591                             size_t len, unsigned int wait_time)
 592 {
 593         struct wpa_supplicant *wpa_s = ctx;
 594         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 595                                       wait_time,
 596                                       wpas_p2p_send_action_tx_status);
 597 }
 598
 599
 600 static void wpas_send_action_done(void *ctx)
 601 {
 602         struct wpa_supplicant *wpa_s = ctx;
 603         offchannel_send_action_done(wpa_s);
 604 }
 605
 606
 607 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 608                                     struct p2p_go_neg_results *params)
 609 {
 610         if (wpa_s->go_params == NULL) {
 611                 wpa_s->go_params = os_malloc(sizeof(*params));
 612                 if (wpa_s->go_params == NULL)
 613                         return -1;
 614         }
 615         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 616         return 0;
 617 }
 618
 619
 620 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 621                                     struct p2p_go_neg_results *res)
 622 {
 623         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 624                    MAC2STR(res->peer_interface_addr));
 625         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 626                           res->ssid, res->ssid_len);
 627         wpa_supplicant_ap_deinit(wpa_s);
 628         wpas_copy_go_neg_results(wpa_s, res);
 629         if (res->wps_method == WPS_PBC)
 630                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 631         else {
 632                 u16 dev_pw_id = DEV_PW_DEFAULT;
 633                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 634                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 635                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 636                                    wpa_s->p2p_pin, 1, dev_pw_id);
 637         }
 638 }
 639
 640
 641 static void p2p_go_configured(void *ctx, void *data)
 642 {
 643         struct wpa_supplicant *wpa_s = ctx;
 644         struct p2p_go_neg_results *params = data;
 645         struct wpa_ssid *ssid;
 646         int network_id = -1;
 647
 648         ssid = wpa_s->current_ssid;
 649         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 650                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 651                 if (wpa_s->global->p2p_group_formation == wpa_s)
 652                         wpa_s->global->p2p_group_formation = NULL;
 653                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 654                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 655                         "go_dev_addr=" MACSTR "%s",
 656                         wpa_s->ifname,
 657                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 658                         ssid->frequency,
 659                         params->passphrase ? params->passphrase : "",
 660                         MAC2STR(wpa_s->parent->own_addr),
 661                         params->persistent_group ? " [PERSISTENT]" : "");
 662
 663                 if (params->persistent_group)
 664                         network_id = wpas_p2p_store_persistent_group(
 665                                 wpa_s->parent, ssid,
 666                                 wpa_s->parent->own_addr);
 667                 if (network_id < 0)
 668                         network_id = ssid->id;
 669                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 670                 wpas_p2p_cross_connect_setup(wpa_s);
 671                 wpas_p2p_set_group_idle_timeout(wpa_s);
 672                 return;
 673         }
 674
 675         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 676         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 677                                               params->peer_interface_addr)) {
 678                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 679                            "filtering");
 680                 return;
 681         }
 682         if (params->wps_method == WPS_PBC)
 683                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 684                                           NULL);
 685         else if (wpa_s->p2p_pin[0])
 686                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 687                                           wpa_s->p2p_pin, NULL, 0);
 688         os_free(wpa_s->go_params);
 689         wpa_s->go_params = NULL;
 690 }
 691
 692
 693 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 694                               struct p2p_go_neg_results *params,
 695                               int group_formation)
 696 {
 697         struct wpa_ssid *ssid;
 698
 699         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 700                 return;
 701
 702         ssid = wpa_config_add_network(wpa_s->conf);
 703         if (ssid == NULL)
 704                 return;
 705
 706         wpa_config_set_network_defaults(ssid);
 707         ssid->temporary = 1;
 708         ssid->p2p_group = 1;
 709         ssid->p2p_persistent_group = params->persistent_group;
 710         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 711                 WPAS_MODE_P2P_GO;
 712         ssid->frequency = params->freq;
 713         ssid->ssid = os_zalloc(params->ssid_len + 1);
 714         if (ssid->ssid) {
 715                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 716                 ssid->ssid_len = params->ssid_len;
 717         }
 718         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 719         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 720         ssid->proto = WPA_PROTO_RSN;
 721         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 722         ssid->passphrase = os_strdup(params->passphrase);
 723
 724         wpa_s->ap_configured_cb = p2p_go_configured;
 725         wpa_s->ap_configured_cb_ctx = wpa_s;
 726         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 727         wpa_s->connect_without_scan = ssid;
 728         wpa_s->reassociate = 1;
 729         wpa_s->disconnected = 0;
 730         wpa_supplicant_req_scan(wpa_s, 0, 0);
 731 }
 732
 733
 734 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 735                                   const struct wpa_supplicant *src)
 736 {
 737         struct wpa_config *d;
 738         const struct wpa_config *s;
 739
 740         d = dst->conf;
 741         s = src->conf;
 742
 743 #define C(n) if (s->n) d->n = os_strdup(s->n)
 744         C(device_name);
 745         C(manufacturer);
 746         C(model_name);
 747         C(model_number);
 748         C(serial_number);
 749         C(config_methods);
 750 #undef C
 751
 752         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 753         os_memcpy(d->sec_device_type, s->sec_device_type,
 754                   sizeof(d->sec_device_type));
 755         d->num_sec_device_types = s->num_sec_device_types;
 756
 757         d->p2p_group_idle = s->p2p_group_idle;
 758         d->p2p_intra_bss = s->p2p_intra_bss;
 759 }
 760
 761
 762 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 763                                         enum wpa_driver_if_type type)
 764 {
 765         char ifname[120], force_ifname[120];
 766
 767         if (wpa_s->pending_interface_name[0]) {
 768                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 769                            "- skip creation of a new one");
 770                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 771                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 772                                    "unknown?! ifname='%s'",
 773                                    wpa_s->pending_interface_name);
 774                         return -1;
 775                 }
 776                 return 0;
 777         }
 778
 779         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 780                     wpa_s->p2p_group_idx);
 781         if (os_strlen(ifname) >= IFNAMSIZ &&
 782             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 783                 /* Try to avoid going over the IFNAMSIZ length limit */
 784                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 785                             wpa_s->p2p_group_idx);
 786         }
 787         force_ifname[0] = '\0';
 788
 789         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 790                    ifname);
 791         wpa_s->p2p_group_idx++;
 792
 793         wpa_s->pending_interface_type = type;
 794         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 795                            wpa_s->pending_interface_addr, NULL) < 0) {
 796                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 797                            "interface");
 798                 return -1;
 799         }
 800
 801         if (force_ifname[0]) {
 802                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 803                            force_ifname);
 804                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 805                            sizeof(wpa_s->pending_interface_name));
 806         } else
 807                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 808                            sizeof(wpa_s->pending_interface_name));
 809         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 810                    MACSTR, wpa_s->pending_interface_name,
 811                    MAC2STR(wpa_s->pending_interface_addr));
 812
 813         return 0;
 814 }
 815
 816
 817 static void wpas_p2p_remove_pending_group_interface(
 818         struct wpa_supplicant *wpa_s)
 819 {
 820         if (!wpa_s->pending_interface_name[0] ||
 821             is_zero_ether_addr(wpa_s->pending_interface_addr))
 822                 return; /* No pending virtual interface */
 823
 824         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
 825                    wpa_s->pending_interface_name);
 826         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
 827                           wpa_s->pending_interface_name);
 828         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
 829         wpa_s->pending_interface_name[0] = '\0';
 830 }
 831
 832
 833 static struct wpa_supplicant *
 834 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
 835 {
 836         struct wpa_interface iface;
 837         struct wpa_supplicant *group_wpa_s;
 838
 839         if (!wpa_s->pending_interface_name[0]) {
 840                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
 841                 if (!wpas_p2p_create_iface(wpa_s))
 842                         return NULL;
 843                 /*
 844                  * Something has forced us to remove the pending interface; try
 845                  * to create a new one and hope for the best that we will get
 846                  * the same local address.
 847                  */
 848                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
 849                                                  WPA_IF_P2P_CLIENT) < 0)
 850                         return NULL;
 851         }
 852
 853         os_memset(&iface, 0, sizeof(iface));
 854         iface.ifname = wpa_s->pending_interface_name;
 855         iface.driver = wpa_s->driver->name;
 856         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 857         iface.driver_param = wpa_s->conf->driver_param;
 858         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
 859         if (group_wpa_s == NULL) {
 860                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
 861                            "wpa_supplicant interface");
 862                 return NULL;
 863         }
 864         wpa_s->pending_interface_name[0] = '\0';
 865         group_wpa_s->parent = wpa_s;
 866         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
 867                 P2P_GROUP_INTERFACE_CLIENT;
 868         wpa_s->global->p2p_group_formation = group_wpa_s;
 869
 870         wpas_p2p_clone_config(group_wpa_s, wpa_s);
 871
 872         return group_wpa_s;
 873 }
 874
 875
 876 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 877                                              void *timeout_ctx)
 878 {
 879         struct wpa_supplicant *wpa_s = eloop_ctx;
 880         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
 881         if (wpa_s->global->p2p)
 882                 p2p_group_formation_failed(wpa_s->global->p2p);
 883         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 884                 wpa_drv_p2p_group_formation_failed(wpa_s);
 885         wpas_group_formation_completed(wpa_s, 0);
 886 }
 887
 888
 889 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
 890 {
 891         struct wpa_supplicant *wpa_s = ctx;
 892
 893         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
 894                 wpa_drv_cancel_remain_on_channel(wpa_s);
 895                 wpa_s->off_channel_freq = 0;
 896                 wpa_s->roc_waiting_drv_freq = 0;
 897         }
 898
 899         if (res->status) {
 900                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
 901                         res->status);
 902                 wpas_notify_p2p_go_neg_completed(wpa_s, res->status);
 903                 wpas_p2p_remove_pending_group_interface(wpa_s);
 904                 return;
 905         }
 906
 907         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
 908         wpas_notify_p2p_go_neg_completed(wpa_s, P2P_SC_SUCCESS);
 909
 910         if (wpa_s->create_p2p_iface) {
 911                 struct wpa_supplicant *group_wpa_s =
 912                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
 913                 if (group_wpa_s == NULL) {
 914                         wpas_p2p_remove_pending_group_interface(wpa_s);
 915                         return;
 916                 }
 917                 if (group_wpa_s != wpa_s) {
 918                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
 919                                   sizeof(group_wpa_s->p2p_pin));
 920                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
 921                 }
 922                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
 923                 wpa_s->pending_interface_name[0] = '\0';
 924                 group_wpa_s->p2p_in_provisioning = 1;
 925
 926                 if (res->role_go)
 927                         wpas_start_wps_go(group_wpa_s, res, 1);
 928                 else
 929                         wpas_start_wps_enrollee(group_wpa_s, res);
 930         } else {
 931                 wpa_s->p2p_in_provisioning = 1;
 932                 wpa_s->global->p2p_group_formation = wpa_s;
 933
 934                 if (res->role_go)
 935                         wpas_start_wps_go(wpa_s, res, 1);
 936                 else
 937                         wpas_start_wps_enrollee(ctx, res);
 938         }
 939
 940         wpa_s->p2p_long_listen = 0;
 941         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
 942
 943         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
 944         eloop_register_timeout(15 + res->peer_config_timeout / 100,
 945                                (res->peer_config_timeout % 100) * 10000,
 946                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
 947 }
 948
 949
 950 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
 951 {
 952         struct wpa_supplicant *wpa_s = ctx;
 953         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
 954                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
 955
 956         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
 957 }
 958
 959
 960 void wpas_dev_found(void *ctx, const u8 *addr,
 961                     const struct p2p_peer_info *info,
 962                     int new_device)
 963 {
 964         struct wpa_supplicant *wpa_s = ctx;
 965         char devtype[WPS_DEV_TYPE_BUFSIZE];
 966
 967         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
 968                 " p2p_dev_addr=" MACSTR
 969                 " pri_dev_type=%s name='%s' config_methods=0x%x "
 970                 "dev_capab=0x%x group_capab=0x%x",
 971                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
 972                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
 973                                      sizeof(devtype)),
 974                 info->device_name, info->config_methods,
 975                 info->dev_capab, info->group_capab);
 976
 977         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
 978 }
 979
 980
 981 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
 982 {
 983         struct wpa_supplicant *wpa_s = ctx;
 984
 985         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
 986 }
 987
 988
 989 static int wpas_start_listen(void *ctx, unsigned int freq,
 990                              unsigned int duration,
 991                              const struct wpabuf *probe_resp_ie)
 992 {
 993         struct wpa_supplicant *wpa_s = ctx;
 994
 995         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
 996
 997         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
 998                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
 999                            "report received Probe Request frames");
1000                 return -1;
1001         }
1002
1003         wpa_s->pending_listen_freq = freq;
1004         wpa_s->pending_listen_duration = duration;
1005
1006         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1007                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1008                            "to remain on channel (%u MHz) for Listen "
1009                            "state", freq);
1010                 wpa_s->pending_listen_freq = 0;
1011                 return -1;
1012         }
1013         wpa_s->off_channel_freq = 0;
1014         wpa_s->roc_waiting_drv_freq = freq;
1015
1016         return 0;
1017 }
1018
1019
1020 static void wpas_stop_listen(void *ctx)
1021 {
1022         struct wpa_supplicant *wpa_s = ctx;
1023         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1024                 wpa_drv_cancel_remain_on_channel(wpa_s);
1025                 wpa_s->off_channel_freq = 0;
1026                 wpa_s->roc_waiting_drv_freq = 0;
1027         }
1028         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1029         wpa_drv_probe_req_report(wpa_s, 0);
1030 }
1031
1032
1033 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1034 {
1035         struct wpa_supplicant *wpa_s = ctx;
1036         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1037 }
1038
1039
1040 static struct p2p_srv_bonjour *
1041 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1042                              const struct wpabuf *query)
1043 {
1044         struct p2p_srv_bonjour *bsrv;
1045         size_t len;
1046
1047         len = wpabuf_len(query);
1048         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1049                          struct p2p_srv_bonjour, list) {
1050                 if (len == wpabuf_len(bsrv->query) &&
1051                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1052                               len) == 0)
1053                         return bsrv;
1054         }
1055         return NULL;
1056 }
1057
1058
1059 static struct p2p_srv_upnp *
1060 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1061                           const char *service)
1062 {
1063         struct p2p_srv_upnp *usrv;
1064
1065         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1066                          struct p2p_srv_upnp, list) {
1067                 if (version == usrv->version &&
1068                     os_strcmp(service, usrv->service) == 0)
1069                         return usrv;
1070         }
1071         return NULL;
1072 }
1073
1074
1075 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1076                                         u8 srv_trans_id)
1077 {
1078         u8 *len_pos;
1079
1080         if (wpabuf_tailroom(resp) < 5)
1081                 return;
1082
1083         /* Length (to be filled) */
1084         len_pos = wpabuf_put(resp, 2);
1085         wpabuf_put_u8(resp, srv_proto);
1086         wpabuf_put_u8(resp, srv_trans_id);
1087         /* Status Code */
1088         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1089         /* Response Data: empty */
1090         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1091 }
1092
1093
1094 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1095                                 struct wpabuf *resp, u8 srv_trans_id)
1096 {
1097         struct p2p_srv_bonjour *bsrv;
1098         u8 *len_pos;
1099
1100         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1101
1102         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1103                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1104                 return;
1105         }
1106
1107         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1108                          struct p2p_srv_bonjour, list) {
1109                 if (wpabuf_tailroom(resp) <
1110                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1111                         return;
1112                 /* Length (to be filled) */
1113                 len_pos = wpabuf_put(resp, 2);
1114                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1115                 wpabuf_put_u8(resp, srv_trans_id);
1116                 /* Status Code */
1117                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1118                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1119                                   wpabuf_head(bsrv->resp),
1120                                   wpabuf_len(bsrv->resp));
1121                 /* Response Data */
1122                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1123                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1124                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1125                              2);
1126         }
1127 }
1128
1129
1130 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1131                                 struct wpabuf *resp, u8 srv_trans_id,
1132                                 const u8 *query, size_t query_len)
1133 {
1134         struct p2p_srv_bonjour *bsrv;
1135         struct wpabuf buf;
1136         u8 *len_pos;
1137
1138         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1139                           query, query_len);
1140         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1141                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1142                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1143                                             srv_trans_id);
1144                 return;
1145         }
1146
1147         if (query_len == 0) {
1148                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1149                 return;
1150         }
1151
1152         if (wpabuf_tailroom(resp) < 5)
1153                 return;
1154         /* Length (to be filled) */
1155         len_pos = wpabuf_put(resp, 2);
1156         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1157         wpabuf_put_u8(resp, srv_trans_id);
1158
1159         wpabuf_set(&buf, query, query_len);
1160         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1161         if (bsrv == NULL) {
1162                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1163                            "available");
1164
1165                 /* Status Code */
1166                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1167                 /* Response Data: empty */
1168                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1169                              2);
1170                 return;
1171         }
1172
1173         /* Status Code */
1174         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1175         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1176                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1177
1178         if (wpabuf_tailroom(resp) >=
1179             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1180                 /* Response Data */
1181                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1182                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1183         }
1184         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1185 }
1186
1187
1188 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1189                              struct wpabuf *resp, u8 srv_trans_id)
1190 {
1191         struct p2p_srv_upnp *usrv;
1192         u8 *len_pos;
1193
1194         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1195
1196         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1197                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1198                 return;
1199         }
1200
1201         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1202                          struct p2p_srv_upnp, list) {
1203                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1204                         return;
1205
1206                 /* Length (to be filled) */
1207                 len_pos = wpabuf_put(resp, 2);
1208                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1209                 wpabuf_put_u8(resp, srv_trans_id);
1210
1211                 /* Status Code */
1212                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1213                 /* Response Data */
1214                 wpabuf_put_u8(resp, usrv->version);
1215                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1216                            usrv->service);
1217                 wpabuf_put_str(resp, usrv->service);
1218                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1219                              2);
1220         }
1221 }
1222
1223
1224 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1225                              struct wpabuf *resp, u8 srv_trans_id,
1226                              const u8 *query, size_t query_len)
1227 {
1228         struct p2p_srv_upnp *usrv;
1229         u8 *len_pos;
1230         u8 version;
1231         char *str;
1232         int count = 0;
1233
1234         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1235                           query, query_len);
1236
1237         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1238                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1239                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1240                                             srv_trans_id);
1241                 return;
1242         }
1243
1244         if (query_len == 0) {
1245                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1246                 return;
1247         }
1248
1249         if (wpabuf_tailroom(resp) < 5)
1250                 return;
1251
1252         /* Length (to be filled) */
1253         len_pos = wpabuf_put(resp, 2);
1254         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1255         wpabuf_put_u8(resp, srv_trans_id);
1256
1257         version = query[0];
1258         str = os_malloc(query_len);
1259         if (str == NULL)
1260                 return;
1261         os_memcpy(str, query + 1, query_len - 1);
1262         str[query_len - 1] = '\0';
1263
1264         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1265                          struct p2p_srv_upnp, list) {
1266                 if (version != usrv->version)
1267                         continue;
1268
1269                 if (os_strcmp(str, "ssdp:all") != 0 &&
1270                     os_strstr(usrv->service, str) == NULL)
1271                         continue;
1272
1273                 if (wpabuf_tailroom(resp) < 2)
1274                         break;
1275                 if (count == 0) {
1276                         /* Status Code */
1277                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1278                         /* Response Data */
1279                         wpabuf_put_u8(resp, version);
1280                 } else
1281                         wpabuf_put_u8(resp, ',');
1282
1283                 count++;
1284
1285                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1286                            usrv->service);
1287                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1288                         break;
1289                 wpabuf_put_str(resp, usrv->service);
1290         }
1291         os_free(str);
1292
1293         if (count == 0) {
1294                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1295                            "available");
1296                 /* Status Code */
1297                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1298                 /* Response Data: empty */
1299         }
1300
1301         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1302 }
1303
1304
1305 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1306                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1307 {
1308         struct wpa_supplicant *wpa_s = ctx;
1309         const u8 *pos = tlvs;
1310         const u8 *end = tlvs + tlvs_len;
1311         const u8 *tlv_end;
1312         u16 slen;
1313         struct wpabuf *resp;
1314         u8 srv_proto, srv_trans_id;
1315         size_t buf_len;
1316         char *buf;
1317
1318         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1319                     tlvs, tlvs_len);
1320         buf_len = 2 * tlvs_len + 1;
1321         buf = os_malloc(buf_len);
1322         if (buf) {
1323                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1324                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1325                              MACSTR " %u %u %s",
1326                              freq, MAC2STR(sa), dialog_token, update_indic,
1327                              buf);
1328                 os_free(buf);
1329         }
1330
1331         if (wpa_s->p2p_sd_over_ctrl_iface)
1332                 return; /* to be processed by an external program */
1333
1334         resp = wpabuf_alloc(10000);
1335         if (resp == NULL)
1336                 return;
1337
1338         while (pos + 1 < end) {
1339                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1340                 slen = WPA_GET_LE16(pos);
1341                 pos += 2;
1342                 if (pos + slen > end || slen < 2) {
1343                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1344                                    "length");
1345                         wpabuf_free(resp);
1346                         return;
1347                 }
1348                 tlv_end = pos + slen;
1349
1350                 srv_proto = *pos++;
1351                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1352                            srv_proto);
1353                 srv_trans_id = *pos++;
1354                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1355                            srv_trans_id);
1356
1357                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1358                             pos, tlv_end - pos);
1359
1360
1361                 if (wpa_s->force_long_sd) {
1362                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1363                                    "response");
1364                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1365                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1366                         goto done;
1367                 }
1368
1369                 switch (srv_proto) {
1370                 case P2P_SERV_ALL_SERVICES:
1371                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1372                                    "for all services");
1373                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1374                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1375                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1376                                            "discovery protocols available");
1377                                 wpas_sd_add_proto_not_avail(
1378                                         resp, P2P_SERV_ALL_SERVICES,
1379                                         srv_trans_id);
1380                                 break;
1381                         }
1382                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1383                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1384                         break;
1385                 case P2P_SERV_BONJOUR:
1386                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1387                                             pos, tlv_end - pos);
1388                         break;
1389                 case P2P_SERV_UPNP:
1390                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1391                                          pos, tlv_end - pos);
1392                         break;
1393                 default:
1394                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1395                                    "protocol %u", srv_proto);
1396                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1397                                                     srv_trans_id);
1398                         break;
1399                 }
1400
1401                 pos = tlv_end;
1402         }
1403
1404 done:
1405         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1406                                    update_indic, tlvs, tlvs_len);
1407
1408         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1409
1410         wpabuf_free(resp);
1411 }
1412
1413
1414 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1415                       const u8 *tlvs, size_t tlvs_len)
1416 {
1417         struct wpa_supplicant *wpa_s = ctx;
1418         const u8 *pos = tlvs;
1419         const u8 *end = tlvs + tlvs_len;
1420         const u8 *tlv_end;
1421         u16 slen;
1422         size_t buf_len;
1423         char *buf;
1424
1425         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1426                     tlvs, tlvs_len);
1427         if (tlvs_len > 1500) {
1428                 /* TODO: better way for handling this */
1429                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1430                              P2P_EVENT_SERV_DISC_RESP MACSTR
1431                              " %u <long response: %u bytes>",
1432                              MAC2STR(sa), update_indic,
1433                              (unsigned int) tlvs_len);
1434         } else {
1435                 buf_len = 2 * tlvs_len + 1;
1436                 buf = os_malloc(buf_len);
1437                 if (buf) {
1438                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1439                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1440                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1441                                      MAC2STR(sa), update_indic, buf);
1442                         os_free(buf);
1443                 }
1444         }
1445
1446         while (pos < end) {
1447                 u8 srv_proto, srv_trans_id, status;
1448
1449                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1450                 slen = WPA_GET_LE16(pos);
1451                 pos += 2;
1452                 if (pos + slen > end || slen < 3) {
1453                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1454                                    "length");
1455                         return;
1456                 }
1457                 tlv_end = pos + slen;
1458
1459                 srv_proto = *pos++;
1460                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1461                            srv_proto);
1462                 srv_trans_id = *pos++;
1463                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1464                            srv_trans_id);
1465                 status = *pos++;
1466                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1467                            status);
1468
1469                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1470                             pos, tlv_end - pos);
1471
1472                 pos = tlv_end;
1473         }
1474
1475         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1476 }
1477
1478
1479 void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1480                            const struct wpabuf *tlvs)
1481 {
1482         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1483                 return (void *) wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1484         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1485                 return NULL;
1486         return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1487 }
1488
1489
1490 void * wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1491                                 u8 version, const char *query)
1492 {
1493         struct wpabuf *tlvs;
1494         void *ret;
1495
1496         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1497         if (tlvs == NULL)
1498                 return NULL;
1499         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1500         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1501         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1502         wpabuf_put_u8(tlvs, version);
1503         wpabuf_put_str(tlvs, query);
1504         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1505         wpabuf_free(tlvs);
1506         return ret;
1507 }
1508
1509
1510 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
1511 {
1512         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1513                 return wpa_drv_p2p_sd_cancel_request(wpa_s, (u64) req);
1514         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1515                 return -1;
1516         return p2p_sd_cancel_request(wpa_s->global->p2p, req);
1517 }
1518
1519
1520 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1521                           const u8 *dst, u8 dialog_token,
1522                           const struct wpabuf *resp_tlvs)
1523 {
1524         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1525                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1526                                         resp_tlvs);
1527                 return;
1528         }
1529         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1530                 return;
1531         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1532                         resp_tlvs);
1533 }
1534
1535
1536 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1537 {
1538         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1539                 wpa_drv_p2p_service_update(wpa_s);
1540                 return;
1541         }
1542         if (wpa_s->global->p2p)
1543                 p2p_sd_service_update(wpa_s->global->p2p);
1544 }
1545
1546
1547 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1548 {
1549         dl_list_del(&bsrv->list);
1550         wpabuf_free(bsrv->query);
1551         wpabuf_free(bsrv->resp);
1552         os_free(bsrv);
1553 }
1554
1555
1556 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1557 {
1558         dl_list_del(&usrv->list);
1559         os_free(usrv->service);
1560         os_free(usrv);
1561 }
1562
1563
1564 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1565 {
1566         struct p2p_srv_bonjour *bsrv, *bn;
1567         struct p2p_srv_upnp *usrv, *un;
1568
1569         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1570                               struct p2p_srv_bonjour, list)
1571                 wpas_p2p_srv_bonjour_free(bsrv);
1572
1573         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1574                               struct p2p_srv_upnp, list)
1575                 wpas_p2p_srv_upnp_free(usrv);
1576
1577         wpas_p2p_sd_service_update(wpa_s);
1578 }
1579
1580
1581 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1582                                  struct wpabuf *query, struct wpabuf *resp)
1583 {
1584         struct p2p_srv_bonjour *bsrv;
1585
1586         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1587         if (bsrv) {
1588                 wpabuf_free(query);
1589                 wpabuf_free(bsrv->resp);
1590                 bsrv->resp = resp;
1591                 return 0;
1592         }
1593
1594         bsrv = os_zalloc(sizeof(*bsrv));
1595         if (bsrv == NULL)
1596                 return -1;
1597         bsrv->query = query;
1598         bsrv->resp = resp;
1599         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1600
1601         wpas_p2p_sd_service_update(wpa_s);
1602         return 0;
1603 }
1604
1605
1606 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1607                                  const struct wpabuf *query)
1608 {
1609         struct p2p_srv_bonjour *bsrv;
1610
1611         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1612         if (bsrv == NULL)
1613                 return -1;
1614         wpas_p2p_srv_bonjour_free(bsrv);
1615         wpas_p2p_sd_service_update(wpa_s);
1616         return 0;
1617 }
1618
1619
1620 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
1621                               const char *service)
1622 {
1623         struct p2p_srv_upnp *usrv;
1624
1625         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
1626                 return 0; /* Already listed */
1627         usrv = os_zalloc(sizeof(*usrv));
1628         if (usrv == NULL)
1629                 return -1;
1630         usrv->version = version;
1631         usrv->service = os_strdup(service);
1632         if (usrv->service == NULL) {
1633                 os_free(usrv);
1634                 return -1;
1635         }
1636         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
1637
1638         wpas_p2p_sd_service_update(wpa_s);
1639         return 0;
1640 }
1641
1642
1643 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
1644                               const char *service)
1645 {
1646         struct p2p_srv_upnp *usrv;
1647
1648         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
1649         if (usrv == NULL)
1650                 return -1;
1651         wpas_p2p_srv_upnp_free(usrv);
1652         wpas_p2p_sd_service_update(wpa_s);
1653         return 0;
1654 }
1655
1656
1657 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
1658                                          const u8 *peer, const char *params,
1659                                          unsigned int generated_pin)
1660 {
1661         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
1662                 MAC2STR(peer), generated_pin, params);
1663 }
1664
1665
1666 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
1667                                         const u8 *peer, const char *params)
1668 {
1669         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
1670                 MAC2STR(peer), params);
1671 }
1672
1673
1674 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
1675                         const u8 *dev_addr, const u8 *pri_dev_type,
1676                         const char *dev_name, u16 supp_config_methods,
1677                         u8 dev_capab, u8 group_capab)
1678 {
1679         struct wpa_supplicant *wpa_s = ctx;
1680         char devtype[WPS_DEV_TYPE_BUFSIZE];
1681         char params[200];
1682         u8 empty_dev_type[8];
1683         unsigned int generated_pin = 0;
1684
1685         if (pri_dev_type == NULL) {
1686                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
1687                 pri_dev_type = empty_dev_type;
1688         }
1689         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
1690                     " pri_dev_type=%s name='%s' config_methods=0x%x "
1691                     "dev_capab=0x%x group_capab=0x%x",
1692                     MAC2STR(dev_addr),
1693                     wps_dev_type_bin2str(pri_dev_type, devtype,
1694                                          sizeof(devtype)),
1695                     dev_name, supp_config_methods, dev_capab, group_capab);
1696         params[sizeof(params) - 1] = '\0';
1697
1698         if (config_methods & WPS_CONFIG_DISPLAY) {
1699                 generated_pin = wps_generate_pin();
1700                 wpas_prov_disc_local_display(wpa_s, peer, params,
1701                                              generated_pin);
1702         } else if (config_methods & WPS_CONFIG_KEYPAD)
1703                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
1704         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1705                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
1706                         "%s", MAC2STR(peer), params);
1707
1708         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
1709                                             P2P_PROV_DISC_SUCCESS,
1710                                             config_methods, generated_pin);
1711 }
1712
1713
1714 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
1715 {
1716         struct wpa_supplicant *wpa_s = ctx;
1717         unsigned int generated_pin = 0;
1718
1719         if (config_methods & WPS_CONFIG_DISPLAY)
1720                 wpas_prov_disc_local_keypad(wpa_s, peer, "");
1721         else if (config_methods & WPS_CONFIG_KEYPAD) {
1722                 generated_pin = wps_generate_pin();
1723                 wpas_prov_disc_local_display(wpa_s, peer, "", generated_pin);
1724         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1725                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR,
1726                         MAC2STR(peer));
1727
1728         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
1729                                             P2P_PROV_DISC_SUCCESS,
1730                                             config_methods, generated_pin);
1731
1732         if (wpa_s->pending_pd_before_join &&
1733             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1734              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
1735                 wpa_s->pending_pd_before_join = 0;
1736                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
1737                            "join-existing-group operation");
1738                 wpas_p2p_join_start(wpa_s);
1739         }
1740 }
1741
1742
1743 void wpas_prov_disc_fail(void *ctx, const u8 *peer,
1744                          enum p2p_prov_disc_status status)
1745 {
1746         struct wpa_supplicant *wpa_s = ctx;
1747
1748         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
1749                                             status, 0, 0);
1750 }
1751
1752
1753 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
1754                                   const u8 *go_dev_addr, const u8 *ssid,
1755                                   size_t ssid_len, int *go, u8 *group_bssid,
1756                                   int *force_freq, int persistent_group)
1757 {
1758         struct wpa_supplicant *wpa_s = ctx;
1759         struct wpa_ssid *s;
1760         u8 cur_bssid[ETH_ALEN];
1761         int res;
1762         struct wpa_supplicant *grp;
1763
1764         if (!persistent_group) {
1765                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
1766                            " to join an active group", MAC2STR(sa));
1767                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
1768                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
1769                      == 0 ||
1770                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
1771                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
1772                                    "authorized invitation");
1773                         goto accept_inv;
1774                 }
1775                 /*
1776                  * Do not accept the invitation automatically; notify user and
1777                  * request approval.
1778                  */
1779                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
1780         }
1781
1782         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
1783         if (grp) {
1784                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
1785                            "running persistent group");
1786                 if (*go)
1787                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
1788                 goto accept_inv;
1789         }
1790
1791         if (!wpa_s->conf->persistent_reconnect)
1792                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
1793
1794         for (s = wpa_s->conf->ssid; s; s = s->next) {
1795                 if (s->disabled == 2 &&
1796                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
1797                     s->ssid_len == ssid_len &&
1798                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
1799                         break;
1800         }
1801
1802         if (!s) {
1803                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
1804                            " requested reinvocation of an unknown group",
1805                            MAC2STR(sa));
1806                 return P2P_SC_FAIL_UNKNOWN_GROUP;
1807         }
1808
1809         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
1810                 *go = 1;
1811                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1812                         wpa_printf(MSG_DEBUG, "P2P: The only available "
1813                                    "interface is already in use - reject "
1814                                    "invitation");
1815                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
1816                 }
1817                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
1818         } else if (s->mode == WPAS_MODE_P2P_GO) {
1819                 *go = 1;
1820                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
1821                 {
1822                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
1823                                    "interface address for the group");
1824                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
1825                 }
1826                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
1827                           ETH_ALEN);
1828         }
1829
1830 accept_inv:
1831         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
1832             wpa_s->assoc_freq) {
1833                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
1834                            "the channel we are already using");
1835                 *force_freq = wpa_s->assoc_freq;
1836         }
1837
1838         res = wpa_drv_shared_freq(wpa_s);
1839         if (res > 0) {
1840                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
1841                            "with the channel we are already using on a "
1842                            "shared interface");
1843                 *force_freq = res;
1844         }
1845
1846         return P2P_SC_SUCCESS;
1847 }
1848
1849
1850 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
1851                                      const u8 *ssid, size_t ssid_len,
1852                                      const u8 *go_dev_addr, u8 status,
1853                                      int op_freq)
1854 {
1855         struct wpa_supplicant *wpa_s = ctx;
1856         struct wpa_ssid *s;
1857
1858         for (s = wpa_s->conf->ssid; s; s = s->next) {
1859                 if (s->disabled == 2 &&
1860                     s->ssid_len == ssid_len &&
1861                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
1862                         break;
1863         }
1864
1865         if (status == P2P_SC_SUCCESS) {
1866                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
1867                            " was accepted; op_freq=%d MHz",
1868                            MAC2STR(sa), op_freq);
1869                 if (s) {
1870                         wpas_p2p_group_add_persistent(
1871                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
1872                 } else if (bssid) {
1873                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
1874                                       wpa_s->p2p_wps_method);
1875                 }
1876                 return;
1877         }
1878
1879         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
1880                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
1881                            " was rejected (status %u)", MAC2STR(sa), status);
1882                 return;
1883         }
1884
1885         if (!s) {
1886                 if (bssid) {
1887                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
1888                                 "sa=" MACSTR " go_dev_addr=" MACSTR
1889                                 " bssid=" MACSTR " unknown-network",
1890                                 MAC2STR(sa), MAC2STR(go_dev_addr),
1891                                 MAC2STR(bssid));
1892                 } else {
1893                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
1894                                 "sa=" MACSTR " go_dev_addr=" MACSTR
1895                                 " unknown-network",
1896                                 MAC2STR(sa), MAC2STR(go_dev_addr));
1897                 }
1898                 return;
1899         }
1900
1901         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
1902                 " persistent=%d", MAC2STR(sa), s->id);
1903 }
1904
1905
1906 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
1907 {
1908         struct wpa_supplicant *wpa_s = ctx;
1909         struct wpa_ssid *ssid;
1910
1911         if (bssid) {
1912                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
1913                         "status=%d " MACSTR,
1914                         status, MAC2STR(bssid));
1915         } else {
1916                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
1917                         "status=%d ", status);
1918         }
1919         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
1920
1921         if (wpa_s->pending_invite_ssid_id == -1)
1922                 return; /* Invitation to active group */
1923
1924         if (status != P2P_SC_SUCCESS) {
1925                 wpas_p2p_remove_pending_group_interface(wpa_s);
1926                 return;
1927         }
1928
1929         ssid = wpa_config_get_network(wpa_s->conf,
1930                                       wpa_s->pending_invite_ssid_id);
1931         if (ssid == NULL) {
1932                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
1933                            "data matching with invitation");
1934                 return;
1935         }
1936
1937         wpas_p2p_group_add_persistent(wpa_s, ssid,
1938                                       ssid->mode == WPAS_MODE_P2P_GO, 0);
1939 }
1940
1941
1942 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
1943                                      struct p2p_channels *chan)
1944 {
1945         int i, cla = 0;
1946
1947         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
1948                    "band");
1949
1950         /* Operating class 81 - 2.4 GHz band channels 1..13 */
1951         chan->reg_class[cla].reg_class = 81;
1952         chan->reg_class[cla].channels = 11;
1953         for (i = 0; i < 11; i++)
1954                 chan->reg_class[cla].channel[i] = i + 1;
1955         cla++;
1956
1957         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
1958                    "band");
1959
1960         /* Operating class 115 - 5 GHz, channels 36-48 */
1961         chan->reg_class[cla].reg_class = 115;
1962         chan->reg_class[cla].channels = 4;
1963         chan->reg_class[cla].channel[0] = 36;
1964         chan->reg_class[cla].channel[1] = 40;
1965         chan->reg_class[cla].channel[2] = 44;
1966         chan->reg_class[cla].channel[3] = 48;
1967         cla++;
1968
1969         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
1970                    "band");
1971
1972         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
1973         chan->reg_class[cla].reg_class = 124;
1974         chan->reg_class[cla].channels = 4;
1975         chan->reg_class[cla].channel[0] = 149;
1976         chan->reg_class[cla].channel[1] = 153;
1977         chan->reg_class[cla].channel[2] = 157;
1978         chan->reg_class[cla].channel[3] = 161;
1979         cla++;
1980
1981         chan->reg_classes = cla;
1982         return 0;
1983 }
1984
1985
1986 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1987                                           u16 num_modes,
1988                                           enum hostapd_hw_mode mode)
1989 {
1990         u16 i;
1991
1992         for (i = 0; i < num_modes; i++) {
1993                 if (modes[i].mode == mode)
1994                         return &modes[i];
1995         }
1996
1997         return NULL;
1998 }
1999
2000
2001 static int has_channel(struct hostapd_hw_modes *mode, u8 chan, int *flags)
2002 {
2003         int i;
2004
2005         for (i = 0; i < mode->num_channels; i++) {
2006                 if (mode->channels[i].chan == chan) {
2007                         if (flags)
2008                                 *flags = mode->channels[i].flag;
2009                         return !(mode->channels[i].flag &
2010                                  (HOSTAPD_CHAN_DISABLED |
2011                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2012                                   HOSTAPD_CHAN_NO_IBSS |
2013                                   HOSTAPD_CHAN_RADAR));
2014                 }
2015         }
2016
2017         return 0;
2018 }
2019
2020
2021 struct p2p_oper_class_map {
2022         enum hostapd_hw_mode mode;
2023         u8 op_class;
2024         u8 min_chan;
2025         u8 max_chan;
2026         u8 inc;
2027         enum { BW20, BW40PLUS, BW40MINUS } bw;
2028 };
2029
2030 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2031                                    struct p2p_channels *chan)
2032 {
2033         struct hostapd_hw_modes *mode;
2034         int cla, op;
2035         struct p2p_oper_class_map op_class[] = {
2036                 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2037                 { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2038 #if 0 /* Do not enable HT40 on 2 GHz for now */
2039                 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2040                 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2041 #endif
2042                 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2043                 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2044                 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2045                 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2046                 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2047                 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2048                 { -1, 0, 0, 0, 0, BW20 }
2049         };
2050
2051         if (wpa_s->hw.modes == NULL) {
2052                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2053                            "of all supported channels; assume dualband "
2054                            "support");
2055                 return wpas_p2p_default_channels(wpa_s, chan);
2056         }
2057
2058         cla = 0;
2059
2060         for (op = 0; op_class[op].op_class; op++) {
2061                 struct p2p_oper_class_map *o = &op_class[op];
2062                 u8 ch;
2063                 struct p2p_reg_class *reg = NULL;
2064
2065                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2066                 if (mode == NULL)
2067                         continue;
2068                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2069                         int flag;
2070                         if (!has_channel(mode, ch, &flag))
2071                                 continue;
2072                         if (o->bw == BW40MINUS &&
2073                             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2074                              !has_channel(mode, ch - 4, NULL)))
2075                                 continue;
2076                         if (o->bw == BW40PLUS &&
2077                             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2078                              !has_channel(mode, ch + 4, NULL)))
2079                                 continue;
2080                         if (reg == NULL) {
2081                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2082                                            "class %u", o->op_class);
2083                                 reg = &chan->reg_class[cla];
2084                                 cla++;
2085                                 reg->reg_class = o->op_class;
2086                         }
2087                         reg->channel[reg->channels] = ch;
2088                         reg->channels++;
2089                 }
2090                 if (reg) {
2091                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2092                                     reg->channel, reg->channels);
2093                 }
2094         }
2095
2096         chan->reg_classes = cla;
2097
2098         return 0;
2099 }
2100
2101
2102 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2103                         size_t buf_len)
2104 {
2105         struct wpa_supplicant *wpa_s = ctx;
2106
2107         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2108                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2109                         break;
2110         }
2111         if (wpa_s == NULL)
2112                 return -1;
2113
2114         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2115 }
2116
2117
2118 /**
2119  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2120  * @global: Pointer to global data from wpa_supplicant_init()
2121  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2122  * Returns: 0 on success, -1 on failure
2123  */
2124 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2125 {
2126         struct p2p_config p2p;
2127         unsigned int r;
2128         int i;
2129
2130         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2131                 return 0;
2132
2133         if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
2134                 wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
2135                 /* Continue anyway; this is not really a fatal error */
2136         }
2137
2138         if (global->p2p)
2139                 return 0;
2140
2141         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2142                 struct p2p_params params;
2143
2144                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2145                 os_memset(&params, 0, sizeof(params));
2146                 params.dev_name = wpa_s->conf->device_name;
2147                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2148                           WPS_DEV_TYPE_LEN);
2149                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2150                 os_memcpy(params.sec_dev_type,
2151                           wpa_s->conf->sec_device_type,
2152                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2153
2154                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2155                         return -1;
2156
2157                 return 0;
2158         }
2159
2160         os_memset(&p2p, 0, sizeof(p2p));
2161         p2p.msg_ctx = wpa_s;
2162         p2p.cb_ctx = wpa_s;
2163         p2p.p2p_scan = wpas_p2p_scan;
2164         p2p.send_action = wpas_send_action;
2165         p2p.send_action_done = wpas_send_action_done;
2166         p2p.go_neg_completed = wpas_go_neg_completed;
2167         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2168         p2p.dev_found = wpas_dev_found;
2169         p2p.dev_lost = wpas_dev_lost;
2170         p2p.start_listen = wpas_start_listen;
2171         p2p.stop_listen = wpas_stop_listen;
2172         p2p.send_probe_resp = wpas_send_probe_resp;
2173         p2p.sd_request = wpas_sd_request;
2174         p2p.sd_response = wpas_sd_response;
2175         p2p.prov_disc_req = wpas_prov_disc_req;
2176         p2p.prov_disc_resp = wpas_prov_disc_resp;
2177         p2p.prov_disc_fail = wpas_prov_disc_fail;
2178         p2p.invitation_process = wpas_invitation_process;
2179         p2p.invitation_received = wpas_invitation_received;
2180         p2p.invitation_result = wpas_invitation_result;
2181         p2p.get_noa = wpas_get_noa;
2182
2183         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2184         os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
2185         p2p.dev_name = wpa_s->conf->device_name;
2186         p2p.manufacturer = wpa_s->conf->manufacturer;
2187         p2p.model_name = wpa_s->conf->model_name;
2188         p2p.model_number = wpa_s->conf->model_number;
2189         p2p.serial_number = wpa_s->conf->serial_number;
2190         if (wpa_s->wps) {
2191                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2192                 p2p.config_methods = wpa_s->wps->config_methods;
2193         }
2194
2195         if (wpa_s->conf->p2p_listen_reg_class &&
2196             wpa_s->conf->p2p_listen_channel) {
2197                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2198                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2199         } else {
2200                 p2p.reg_class = 81;
2201                 /*
2202                  * Pick one of the social channels randomly as the listen
2203                  * channel.
2204                  */
2205                 os_get_random((u8 *) &r, sizeof(r));
2206                 p2p.channel = 1 + (r % 3) * 5;
2207         }
2208         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2209
2210         if (wpa_s->conf->p2p_oper_reg_class &&
2211             wpa_s->conf->p2p_oper_channel) {
2212                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2213                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2214                 p2p.cfg_op_channel = 1;
2215                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2216                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2217
2218         } else {
2219                 p2p.op_reg_class = 81;
2220                 /*
2221                  * Use random operation channel from (1, 6, 11) if no other
2222                  * preference is indicated.
2223                  */
2224                 os_get_random((u8 *) &r, sizeof(r));
2225                 p2p.op_channel = 1 + (r % 3) * 5;
2226                 p2p.cfg_op_channel = 0;
2227                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2228                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2229         }
2230         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2231                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2232                 p2p.country[2] = 0x04;
2233         } else
2234                 os_memcpy(p2p.country, "XX\x04", 3);
2235
2236         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2237                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2238                            "channel list");
2239                 return -1;
2240         }
2241
2242         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2243                   WPS_DEV_TYPE_LEN);
2244
2245         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2246         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2247                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2248
2249         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2250                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2251
2252         p2p.max_peers = 100;
2253
2254         if (wpa_s->conf->p2p_ssid_postfix) {
2255                 p2p.ssid_postfix_len =
2256                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2257                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2258                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2259                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2260                           p2p.ssid_postfix_len);
2261         }
2262
2263         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2264
2265         global->p2p = p2p_init(&p2p);
2266         if (global->p2p == NULL)
2267                 return -1;
2268
2269         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2270                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2271                         continue;
2272                 p2p_add_wps_vendor_extension(
2273                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2274         }
2275
2276         return 0;
2277 }
2278
2279
2280 /**
2281  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2282  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2283  *
2284  * This function deinitialize per-interface P2P data.
2285  */
2286 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2287 {
2288         if (wpa_s->driver && wpa_s->drv_priv)
2289                 wpa_drv_probe_req_report(wpa_s, 0);
2290         os_free(wpa_s->go_params);
2291         wpa_s->go_params = NULL;
2292         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2293         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2294         wpa_s->p2p_long_listen = 0;
2295         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2296         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2297         wpas_p2p_remove_pending_group_interface(wpa_s);
2298
2299         /* TODO: remove group interface from the driver if this wpa_s instance
2300          * is on top of a P2P group interface */
2301 }
2302
2303
2304 /**
2305  * wpas_p2p_deinit_global - Deinitialize global P2P module
2306  * @global: Pointer to global data from wpa_supplicant_init()
2307  *
2308  * This function deinitializes the global (per device) P2P module.
2309  */
2310 void wpas_p2p_deinit_global(struct wpa_global *global)
2311 {
2312         struct wpa_supplicant *wpa_s, *tmp;
2313         char *ifname;
2314
2315         if (global->p2p == NULL)
2316                 return;
2317
2318         /* Remove remaining P2P group interfaces */
2319         wpa_s = global->ifaces;
2320         if (wpa_s)
2321                 wpas_p2p_service_flush(wpa_s);
2322         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2323                 wpa_s = wpa_s->next;
2324         while (wpa_s) {
2325                 enum wpa_driver_if_type type;
2326                 tmp = global->ifaces;
2327                 while (tmp &&
2328                        (tmp == wpa_s ||
2329                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2330                         tmp = tmp->next;
2331                 }
2332                 if (tmp == NULL)
2333                         break;
2334                 ifname = os_strdup(tmp->ifname);
2335                 type = wpas_p2p_if_type(tmp->p2p_group_interface);
2336                 wpa_supplicant_remove_iface(global, tmp);
2337                 if (ifname)
2338                         wpa_drv_if_remove(wpa_s, type, ifname);
2339                 os_free(ifname);
2340         }
2341
2342         /*
2343          * Deinit GO data on any possibly remaining interface (if main
2344          * interface is used as GO).
2345          */
2346         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2347                 if (wpa_s->ap_iface)
2348                         wpas_p2p_group_deinit(wpa_s);
2349         }
2350
2351         p2p_deinit(global->p2p);
2352         global->p2p = NULL;
2353 }
2354
2355
2356 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2357 {
2358         if (wpa_s->drv_flags &
2359             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2360              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2361                 return 1; /* P2P group requires a new interface in every case
2362                            */
2363         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2364                 return 0; /* driver does not support concurrent operations */
2365         if (wpa_s->global->ifaces->next)
2366                 return 1; /* more that one interface already in use */
2367         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2368                 return 1; /* this interface is already in use */
2369         return 0;
2370 }
2371
2372
2373 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2374                                  const u8 *peer_addr,
2375                                  enum p2p_wps_method wps_method,
2376                                  int go_intent, const u8 *own_interface_addr,
2377                                  unsigned int force_freq, int persistent_group)
2378 {
2379         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2380                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2381                                            go_intent, own_interface_addr,
2382                                            force_freq, persistent_group);
2383         }
2384
2385         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2386                            go_intent, own_interface_addr, force_freq,
2387                            persistent_group);
2388 }
2389
2390
2391 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2392                                 const u8 *peer_addr,
2393                                 enum p2p_wps_method wps_method,
2394                                 int go_intent, const u8 *own_interface_addr,
2395                                 unsigned int force_freq, int persistent_group)
2396 {
2397         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2398                 return -1;
2399
2400         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2401                              go_intent, own_interface_addr, force_freq,
2402                              persistent_group);
2403 }
2404
2405
2406 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2407 {
2408         wpa_s->p2p_join_scan_count++;
2409         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2410                    wpa_s->p2p_join_scan_count);
2411         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2412                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2413                            " for join operationg - stop join attempt",
2414                            MAC2STR(wpa_s->pending_join_iface_addr));
2415                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2416                 wpa_msg(wpa_s->parent, MSG_INFO,
2417                         P2P_EVENT_GROUP_FORMATION_FAILURE);
2418         }
2419 }
2420
2421
2422 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
2423                                    struct wpa_scan_results *scan_res)
2424 {
2425         struct wpa_bss *bss;
2426         int freq;
2427         u8 iface_addr[ETH_ALEN];
2428
2429         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2430
2431         if (wpa_s->global->p2p_disabled)
2432                 return;
2433
2434         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for join",
2435                    scan_res ? (int) scan_res->num : -1);
2436
2437         if (scan_res)
2438                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
2439
2440         freq = p2p_get_oper_freq(wpa_s->global->p2p,
2441                                  wpa_s->pending_join_iface_addr);
2442         if (freq < 0 &&
2443             p2p_get_interface_addr(wpa_s->global->p2p,
2444                                    wpa_s->pending_join_dev_addr,
2445                                    iface_addr) == 0 &&
2446             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
2447         {
2448                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
2449                            "address for join from " MACSTR " to " MACSTR
2450                            " based on newly discovered P2P peer entry",
2451                            MAC2STR(wpa_s->pending_join_iface_addr),
2452                            MAC2STR(iface_addr));
2453                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
2454                           ETH_ALEN);
2455
2456                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
2457                                          wpa_s->pending_join_iface_addr);
2458         }
2459         if (freq >= 0) {
2460                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2461                            "from P2P peer table: %d MHz", freq);
2462         }
2463         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
2464         if (bss) {
2465                 freq = bss->freq;
2466                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2467                            "from BSS table: %d MHz", freq);
2468         }
2469         if (freq > 0) {
2470                 u16 method;
2471
2472                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
2473                            "prior to joining an existing group (GO " MACSTR
2474                            " freq=%u MHz)",
2475                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
2476                 wpa_s->pending_pd_before_join = 1;
2477
2478                 switch (wpa_s->pending_join_wps_method) {
2479                 case WPS_PIN_DISPLAY:
2480                         method = WPS_CONFIG_KEYPAD;
2481                         break;
2482                 case WPS_PIN_KEYPAD:
2483                         method = WPS_CONFIG_DISPLAY;
2484                         break;
2485                 case WPS_PBC:
2486                         method = WPS_CONFIG_PUSHBUTTON;
2487                         break;
2488                 default:
2489                         method = 0;
2490                         break;
2491                 }
2492
2493                 if (p2p_prov_disc_req(wpa_s->global->p2p,
2494                                       wpa_s->pending_join_dev_addr, method, 1)
2495                     < 0) {
2496                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
2497                                    "Discovery Request before joining an "
2498                                    "existing group");
2499                         wpa_s->pending_pd_before_join = 0;
2500                         goto start;
2501                 }
2502
2503                 /*
2504                  * Actual join operation will be started from the Action frame
2505                  * TX status callback.
2506                  */
2507                 return;
2508         }
2509
2510         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
2511         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2512         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
2513         wpas_p2p_check_join_scan_limit(wpa_s);
2514         return;
2515
2516 start:
2517         /* Start join operation immediately */
2518         wpas_p2p_join_start(wpa_s);
2519 }
2520
2521
2522 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
2523 {
2524         struct wpa_supplicant *wpa_s = eloop_ctx;
2525         int ret;
2526         struct wpa_driver_scan_params params;
2527         struct wpabuf *wps_ie, *ies;
2528         size_t ielen;
2529
2530         os_memset(&params, 0, sizeof(params));
2531
2532         /* P2P Wildcard SSID */
2533         params.num_ssids = 1;
2534         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
2535         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
2536
2537         wpa_s->wps->dev.p2p = 1;
2538         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
2539                                         WPS_REQ_ENROLLEE, 0, NULL);
2540         if (wps_ie == NULL) {
2541                 wpas_p2p_scan_res_join(wpa_s, NULL);
2542                 return;
2543         }
2544
2545         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
2546         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
2547         if (ies == NULL) {
2548                 wpabuf_free(wps_ie);
2549                 wpas_p2p_scan_res_join(wpa_s, NULL);
2550                 return;
2551         }
2552         wpabuf_put_buf(ies, wps_ie);
2553         wpabuf_free(wps_ie);
2554
2555         p2p_scan_ie(wpa_s->global->p2p, ies);
2556
2557         params.p2p_probe = 1;
2558         params.extra_ies = wpabuf_head(ies);
2559         params.extra_ies_len = wpabuf_len(ies);
2560
2561         /*
2562          * Run a scan to update BSS table and start Provision Discovery once
2563          * the new scan results become available.
2564          */
2565         wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
2566         ret = wpa_drv_scan(wpa_s, &params);
2567
2568         wpabuf_free(ies);
2569
2570         if (ret) {
2571                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
2572                            "try again later");
2573                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2574                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
2575                 wpas_p2p_check_join_scan_limit(wpa_s);
2576         }
2577 }
2578
2579
2580 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
2581                          const u8 *dev_addr, enum p2p_wps_method wps_method)
2582 {
2583         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
2584                    MACSTR " dev " MACSTR ")",
2585                    MAC2STR(iface_addr), MAC2STR(dev_addr));
2586
2587         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
2588         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
2589         wpa_s->pending_join_wps_method = wps_method;
2590
2591         /* Make sure we are not running find during connection establishment */
2592         wpas_p2p_stop_find(wpa_s);
2593
2594         wpa_s->p2p_join_scan_count = 0;
2595         wpas_p2p_join_scan(wpa_s, NULL);
2596         return 0;
2597 }
2598
2599
2600 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
2601 {
2602         struct wpa_supplicant *group;
2603         struct p2p_go_neg_results res;
2604
2605         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
2606         if (group == NULL)
2607                 return -1;
2608         if (group != wpa_s) {
2609                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
2610                           sizeof(group->p2p_pin));
2611                 group->p2p_wps_method = wpa_s->p2p_wps_method;
2612         }
2613
2614         group->p2p_in_provisioning = 1;
2615
2616         os_memset(&res, 0, sizeof(res));
2617         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
2618                   ETH_ALEN);
2619         res.wps_method = wpa_s->pending_join_wps_method;
2620         wpas_start_wps_enrollee(group, &res);
2621
2622         /*
2623          * Allow a longer timeout for join-a-running-group than normal 15
2624          * second group formation timeout since the GO may not have authorized
2625          * our connection yet.
2626          */
2627         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2628         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
2629                                wpa_s, NULL);
2630
2631         return 0;
2632 }
2633
2634
2635 /**
2636  * wpas_p2p_connect - Request P2P Group Formation to be started
2637  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2638  * @peer_addr: Address of the peer P2P Device
2639  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
2640  * @persistent_group: Whether to create a persistent group
2641  * @join: Whether to join an existing group (as a client) instead of starting
2642  *      Group Owner negotiation; @peer_addr is BSSID in that case
2643  * @auth: Whether to only authorize the connection instead of doing that and
2644  *      initiating Group Owner negotiation
2645  * @go_intent: GO Intent or -1 to use default
2646  * @freq: Frequency for the group or 0 for auto-selection
2647  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
2648  *      failure, -2 on failure due to channel not currently available,
2649  *      -3 if forced channel is not supported
2650  */
2651 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
2652                      const char *pin, enum p2p_wps_method wps_method,
2653                      int persistent_group, int join, int auth, int go_intent,
2654                      int freq)
2655 {
2656         int force_freq = 0, oper_freq = 0;
2657         u8 bssid[ETH_ALEN];
2658         int ret = 0;
2659         enum wpa_driver_if_type iftype;
2660
2661         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2662                 return -1;
2663
2664         if (go_intent < 0)
2665                 go_intent = wpa_s->conf->p2p_go_intent;
2666
2667         if (!auth)
2668                 wpa_s->p2p_long_listen = 0;
2669
2670         wpa_s->p2p_wps_method = wps_method;
2671
2672         if (pin)
2673                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
2674         else if (wps_method == WPS_PIN_DISPLAY) {
2675                 ret = wps_generate_pin();
2676                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
2677                             ret);
2678                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
2679                            wpa_s->p2p_pin);
2680         } else
2681                 wpa_s->p2p_pin[0] = '\0';
2682
2683         if (join) {
2684                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
2685                 if (auth) {
2686                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
2687                                    "connect a running group from " MACSTR,
2688                                    MAC2STR(peer_addr));
2689                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
2690                         return ret;
2691                 }
2692                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
2693                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
2694                                            iface_addr) < 0) {
2695                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
2696                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
2697                                          dev_addr);
2698                 }
2699                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) <
2700                     0)
2701                         return -1;
2702                 return ret;
2703         }
2704
2705         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
2706             wpa_s->assoc_freq)
2707                 oper_freq = wpa_s->assoc_freq;
2708         else {
2709                 oper_freq = wpa_drv_shared_freq(wpa_s);
2710                 if (oper_freq < 0)
2711                         oper_freq = 0;
2712         }
2713
2714         if (freq > 0) {
2715                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
2716                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
2717                                    "(%u MHz) is not supported for P2P uses",
2718                                    freq);
2719                         return -3;
2720                 }
2721
2722                 if (oper_freq > 0 && freq != oper_freq &&
2723                     !(wpa_s->drv_flags &
2724                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
2725                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
2726                                    "on %u MHz while connected on another "
2727                                    "channel (%u MHz)", freq, oper_freq);
2728                         return -2;
2729                 }
2730                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
2731                            "requested channel (%u MHz)", freq);
2732                 force_freq = freq;
2733         } else if (oper_freq > 0 &&
2734                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
2735                 if (!(wpa_s->drv_flags &
2736                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
2737                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
2738                                    "while connected on non-P2P supported "
2739                                    "channel (%u MHz)", oper_freq);
2740                         return -2;
2741                 }
2742                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
2743                            "(%u MHz) not available for P2P - try to use "
2744                            "another channel", oper_freq);
2745                 force_freq = 0;
2746         } else if (oper_freq > 0) {
2747                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
2748                            "channel we are already using (%u MHz) on another "
2749                            "interface", oper_freq);
2750                 force_freq = oper_freq;
2751         }
2752
2753         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
2754
2755         if (!wpa_s->create_p2p_iface) {
2756                 if (auth) {
2757                         if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
2758                                                  go_intent, wpa_s->own_addr,
2759                                                  force_freq, persistent_group)
2760                             < 0)
2761                                 return -1;
2762                         return ret;
2763                 }
2764                 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
2765                                           go_intent, wpa_s->own_addr,
2766                                           force_freq, persistent_group) < 0)
2767                         return -1;
2768                 return ret;
2769         }
2770
2771         /* Prepare to add a new interface for the group */
2772         iftype = WPA_IF_P2P_GROUP;
2773         if (go_intent == 15)
2774                 iftype = WPA_IF_P2P_GO;
2775         if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
2776                 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2777                            "interface for the group");
2778                 return -1;
2779         }
2780
2781         if (auth) {
2782                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
2783                                          go_intent,
2784                                          wpa_s->pending_interface_addr,
2785                                          force_freq, persistent_group) < 0)
2786                         return -1;
2787                 return ret;
2788         }
2789         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
2790                                   wpa_s->pending_interface_addr,
2791                                   force_freq, persistent_group) < 0) {
2792                 wpas_p2p_remove_pending_group_interface(wpa_s);
2793                 return -1;
2794         }
2795         return ret;
2796 }
2797
2798
2799 /**
2800  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
2801  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2802  * @freq: Frequency of the channel in MHz
2803  * @duration: Duration of the stay on the channel in milliseconds
2804  *
2805  * This callback is called when the driver indicates that it has started the
2806  * requested remain-on-channel duration.
2807  */
2808 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
2809                                    unsigned int freq, unsigned int duration)
2810 {
2811         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2812                 return;
2813         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
2814                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
2815                               wpa_s->pending_listen_duration);
2816                 wpa_s->pending_listen_freq = 0;
2817         }
2818 }
2819
2820
2821 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
2822                                  unsigned int timeout)
2823 {
2824         /* Limit maximum Listen state time based on driver limitation. */
2825         if (timeout > wpa_s->max_remain_on_chan)
2826                 timeout = wpa_s->max_remain_on_chan;
2827
2828         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2829                 return wpa_drv_p2p_listen(wpa_s, timeout);
2830
2831         return p2p_listen(wpa_s->global->p2p, timeout);
2832 }
2833
2834
2835 /**
2836  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
2837  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2838  * @freq: Frequency of the channel in MHz
2839  *
2840  * This callback is called when the driver indicates that a remain-on-channel
2841  * operation has been completed, i.e., the duration on the requested channel
2842  * has timed out.
2843  */
2844 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
2845                                           unsigned int freq)
2846 {
2847         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
2848                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
2849                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
2850         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2851                 return;
2852         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
2853                 return; /* P2P module started a new operation */
2854         if (wpa_s->pending_action_tx)
2855                 return;
2856         if (wpa_s->p2p_long_listen > 0)
2857                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
2858         if (wpa_s->p2p_long_listen > 0) {
2859                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
2860                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
2861         }
2862 }
2863
2864
2865 /**
2866  * wpas_p2p_group_remove - Remove a P2P group
2867  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2868  * @ifname: Network interface name of the group interface or "*" to remove all
2869  *      groups
2870  * Returns: 0 on success, -1 on failure
2871  *
2872  * This function is used to remove a P2P group. This can be used to disconnect
2873  * from a group in which the local end is a P2P Client or to end a P2P Group in
2874  * case the local end is the Group Owner. If a virtual network interface was
2875  * created for this group, that interface will be removed. Otherwise, only the
2876  * configured P2P group network will be removed from the interface.
2877  */
2878 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
2879 {
2880         struct wpa_global *global = wpa_s->global;
2881
2882         if (os_strcmp(ifname, "*") == 0) {
2883                 struct wpa_supplicant *prev;
2884                 wpa_s = global->ifaces;
2885                 while (wpa_s) {
2886                         prev = wpa_s;
2887                         wpa_s = wpa_s->next;
2888                         wpas_p2p_disconnect(prev);
2889                 }
2890                 return 0;
2891         }
2892
2893         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2894                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2895                         break;
2896         }
2897
2898         return wpas_p2p_disconnect(wpa_s);
2899 }
2900
2901
2902 static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
2903                                     struct p2p_go_neg_results *params,
2904                                     int freq)
2905 {
2906         u8 bssid[ETH_ALEN];
2907         int res;
2908
2909         os_memset(params, 0, sizeof(*params));
2910         params->role_go = 1;
2911         if (freq) {
2912                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
2913                            "frequency %d MHz", freq);
2914                 params->freq = freq;
2915         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
2916                    wpa_s->conf->p2p_oper_channel >= 1 &&
2917                    wpa_s->conf->p2p_oper_channel <= 11) {
2918                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
2919                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
2920                            "frequency %d MHz", params->freq);
2921         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
2922                    wpa_s->conf->p2p_oper_reg_class == 124) {
2923                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
2924                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
2925                            "frequency %d MHz", params->freq);
2926         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
2927                    wpa_s->best_overall_freq > 0 &&
2928                    p2p_supported_freq(wpa_s->global->p2p,
2929                                       wpa_s->best_overall_freq)) {
2930                 params->freq = wpa_s->best_overall_freq;
2931                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
2932                            "channel %d MHz", params->freq);
2933         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
2934                    wpa_s->best_24_freq > 0 &&
2935                    p2p_supported_freq(wpa_s->global->p2p,
2936                                       wpa_s->best_24_freq)) {
2937                 params->freq = wpa_s->best_24_freq;
2938                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
2939                            "channel %d MHz", params->freq);
2940         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
2941                    wpa_s->best_5_freq > 0 &&
2942                    p2p_supported_freq(wpa_s->global->p2p,
2943                                       wpa_s->best_5_freq)) {
2944                 params->freq = wpa_s->best_5_freq;
2945                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
2946                            "channel %d MHz", params->freq);
2947         } else {
2948                 params->freq = 2412;
2949                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
2950                            "known)", params->freq);
2951         }
2952
2953         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
2954             wpa_s->assoc_freq && !freq) {
2955                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
2956                            "already using");
2957                 params->freq = wpa_s->assoc_freq;
2958         }
2959
2960         res = wpa_drv_shared_freq(wpa_s);
2961         if (res > 0 && !freq) {
2962                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
2963                            "already using on a shared interface");
2964                 params->freq = res;
2965         }
2966 }
2967
2968
2969 static struct wpa_supplicant *
2970 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
2971                          int go)
2972 {
2973         struct wpa_supplicant *group_wpa_s;
2974
2975         if (!wpas_p2p_create_iface(wpa_s))
2976                 return wpa_s;
2977
2978         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2979                                          WPA_IF_P2P_CLIENT) < 0)
2980                 return NULL;
2981         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
2982         if (group_wpa_s == NULL) {
2983                 wpas_p2p_remove_pending_group_interface(wpa_s);
2984                 return NULL;
2985         }
2986
2987         return group_wpa_s;
2988 }
2989
2990
2991 /**
2992  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
2993  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2994  * @persistent_group: Whether to create a persistent group
2995  * @freq: Frequency for the group or 0 to indicate no hardcoding
2996  * Returns: 0 on success, -1 on failure
2997  *
2998  * This function creates a new P2P group with the local end as the Group Owner,
2999  * i.e., without using Group Owner Negotiation.
3000  */
3001 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3002                        int freq)
3003 {
3004         struct p2p_go_neg_results params;
3005         unsigned int r;
3006
3007         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3008                 return -1;
3009
3010         if (freq == 2) {
3011                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3012                            "band");
3013                 if (wpa_s->best_24_freq > 0 &&
3014                     p2p_supported_freq(wpa_s->global->p2p,
3015                                        wpa_s->best_24_freq)) {
3016                         freq = wpa_s->best_24_freq;
3017                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3018                                    "channel: %d MHz", freq);
3019                 } else {
3020                         os_get_random((u8 *) &r, sizeof(r));
3021                         freq = 2412 + (r % 3) * 25;
3022                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3023                                    "channel: %d MHz", freq);
3024                 }
3025         }
3026
3027         if (freq == 5) {
3028                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3029                            "band");
3030                 if (wpa_s->best_5_freq > 0 &&
3031                     p2p_supported_freq(wpa_s->global->p2p,
3032                                        wpa_s->best_5_freq)) {
3033                         freq = wpa_s->best_5_freq;
3034                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3035                                    "channel: %d MHz", freq);
3036                 } else {
3037                         os_get_random((u8 *) &r, sizeof(r));
3038                         freq = 5180 + (r % 4) * 20;
3039                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3040                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3041                                            "5 GHz channel for P2P group");
3042                                 return -1;
3043                         }
3044                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3045                                    "channel: %d MHz", freq);
3046                 }
3047         }
3048
3049         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3050                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3051                            "(%u MHz) is not supported for P2P uses",
3052                            freq);
3053                 return -1;
3054         }
3055
3056         wpas_p2p_init_go_params(wpa_s, &params, freq);
3057         p2p_go_params(wpa_s->global->p2p, &params);
3058         params.persistent_group = persistent_group;
3059
3060         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3061         if (wpa_s == NULL)
3062                 return -1;
3063         wpas_start_wps_go(wpa_s, &params, 0);
3064
3065         return 0;
3066 }
3067
3068
3069 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3070                                  struct wpa_ssid *params, int addr_allocated)
3071 {
3072         struct wpa_ssid *ssid;
3073
3074         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3075         if (wpa_s == NULL)
3076                 return -1;
3077
3078         wpa_supplicant_ap_deinit(wpa_s);
3079
3080         ssid = wpa_config_add_network(wpa_s->conf);
3081         if (ssid == NULL)
3082                 return -1;
3083         wpa_config_set_network_defaults(ssid);
3084         ssid->temporary = 1;
3085         ssid->proto = WPA_PROTO_RSN;
3086         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3087         ssid->group_cipher = WPA_CIPHER_CCMP;
3088         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3089         ssid->ssid = os_malloc(params->ssid_len);
3090         if (ssid->ssid == NULL) {
3091                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3092                 return -1;
3093         }
3094         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3095         ssid->ssid_len = params->ssid_len;
3096         ssid->p2p_group = 1;
3097         ssid->export_keys = 1;
3098         if (params->psk_set) {
3099                 os_memcpy(ssid->psk, params->psk, 32);
3100                 ssid->psk_set = 1;
3101         }
3102         if (params->passphrase)
3103                 ssid->passphrase = os_strdup(params->passphrase);
3104
3105         wpa_supplicant_select_network(wpa_s, ssid);
3106
3107         wpa_s->show_group_started = 1;
3108
3109         return 0;
3110 }
3111
3112
3113 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3114                                   struct wpa_ssid *ssid, int addr_allocated,
3115                                   int freq)
3116 {
3117         struct p2p_go_neg_results params;
3118         int go = 0;
3119
3120         if (ssid->disabled != 2 || ssid->ssid == NULL)
3121                 return -1;
3122
3123         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3124             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3125                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3126                            "already running");
3127                 return 0;
3128         }
3129
3130         /* Make sure we are not running find during connection establishment */
3131         wpas_p2p_stop_find(wpa_s);
3132
3133         if (ssid->mode == WPAS_MODE_INFRA)
3134                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3135
3136         if (ssid->mode != WPAS_MODE_P2P_GO)
3137                 return -1;
3138
3139         wpas_p2p_init_go_params(wpa_s, &params, freq);
3140
3141         params.role_go = 1;
3142         if (ssid->passphrase == NULL ||
3143             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
3144                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
3145                            "group");
3146                 return -1;
3147         }
3148         os_strlcpy(params.passphrase, ssid->passphrase,
3149                    sizeof(params.passphrase));
3150         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
3151         params.ssid_len = ssid->ssid_len;
3152         params.persistent_group = 1;
3153
3154         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
3155         if (wpa_s == NULL)
3156                 return -1;
3157
3158         wpas_start_wps_go(wpa_s, &params, 0);
3159
3160         return 0;
3161 }
3162
3163
3164 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
3165                                struct wpabuf *proberesp_ies)
3166 {
3167         struct wpa_supplicant *wpa_s = ctx;
3168         if (wpa_s->ap_iface) {
3169                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
3170                 if (beacon_ies) {
3171                         wpabuf_free(hapd->p2p_beacon_ie);
3172                         hapd->p2p_beacon_ie = beacon_ies;
3173                 }
3174                 wpabuf_free(hapd->p2p_probe_resp_ie);
3175                 hapd->p2p_probe_resp_ie = proberesp_ies;
3176         } else {
3177                 wpabuf_free(beacon_ies);
3178                 wpabuf_free(proberesp_ies);
3179         }
3180         wpa_supplicant_ap_update_beacon(wpa_s);
3181 }
3182
3183
3184 static void wpas_p2p_idle_update(void *ctx, int idle)
3185 {
3186         struct wpa_supplicant *wpa_s = ctx;
3187         if (!wpa_s->ap_iface)
3188                 return;
3189         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
3190         if (idle)
3191                 wpas_p2p_set_group_idle_timeout(wpa_s);
3192         else
3193                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3194 }
3195
3196
3197 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
3198                                        int persistent_group,
3199                                        int group_formation)
3200 {
3201         struct p2p_group *group;
3202         struct p2p_group_config *cfg;
3203
3204         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3205                 return NULL;
3206         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3207                 return NULL;
3208
3209         cfg = os_zalloc(sizeof(*cfg));
3210         if (cfg == NULL)
3211                 return NULL;
3212
3213         cfg->persistent_group = persistent_group;
3214         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
3215         if (wpa_s->max_stations &&
3216             wpa_s->max_stations < wpa_s->conf->max_num_sta)
3217                 cfg->max_clients = wpa_s->max_stations;
3218         else
3219                 cfg->max_clients = wpa_s->conf->max_num_sta;
3220         cfg->cb_ctx = wpa_s;
3221         cfg->ie_update = wpas_p2p_ie_update;
3222         cfg->idle_update = wpas_p2p_idle_update;
3223
3224         group = p2p_group_init(wpa_s->global->p2p, cfg);
3225         if (group == NULL)
3226                 os_free(cfg);
3227         if (!group_formation)
3228                 p2p_group_notif_formation_done(group);
3229         wpa_s->p2p_group = group;
3230         return group;
3231 }
3232
3233
3234 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3235                           int registrar)
3236 {
3237         if (!wpa_s->p2p_in_provisioning) {
3238                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
3239                            "provisioning not in progress");
3240                 return;
3241         }
3242
3243         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
3244                              NULL);
3245         if (wpa_s->global->p2p)
3246                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
3247         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3248                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
3249         wpas_group_formation_completed(wpa_s, 1);
3250 }
3251
3252
3253 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
3254                          struct wps_event_fail *fail)
3255 {
3256         if (!wpa_s->p2p_in_provisioning) {
3257                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
3258                            "provisioning not in progress");
3259                 return;
3260         }
3261         wpas_notify_p2p_wps_failed(wpa_s, fail);
3262 }
3263
3264
3265 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3266                        const char *config_method)
3267 {
3268         u16 config_methods;
3269
3270         if (os_strcmp(config_method, "display") == 0)
3271                 config_methods = WPS_CONFIG_DISPLAY;
3272         else if (os_strcmp(config_method, "keypad") == 0)
3273                 config_methods = WPS_CONFIG_KEYPAD;
3274         else if (os_strcmp(config_method, "pbc") == 0 ||
3275                  os_strcmp(config_method, "pushbutton") == 0)
3276                 config_methods = WPS_CONFIG_PUSHBUTTON;
3277         else
3278                 return -1;
3279
3280         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3281                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
3282                                                  config_methods);
3283         }
3284
3285         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
3286                 return -1;
3287
3288         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
3289                                  config_methods, 0);
3290 }
3291
3292
3293 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
3294                               char *end)
3295 {
3296         return p2p_scan_result_text(ies, ies_len, buf, end);
3297 }
3298
3299
3300 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
3301 {
3302         if (!wpa_s->pending_action_tx)
3303                 return;
3304
3305         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
3306                    "operation request");
3307         wpabuf_free(wpa_s->pending_action_tx);
3308         wpa_s->pending_action_tx = NULL;
3309 }
3310
3311
3312 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
3313                   enum p2p_discovery_type type,
3314                   unsigned int num_req_dev_types, const u8 *req_dev_types)
3315 {
3316         wpas_p2p_clear_pending_action_tx(wpa_s);
3317         wpa_s->p2p_long_listen = 0;
3318
3319         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3320                 return wpa_drv_p2p_find(wpa_s, timeout, type);
3321
3322         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3323                 return -1;
3324
3325         return p2p_find(wpa_s->global->p2p, timeout, type,
3326                         num_req_dev_types, req_dev_types);
3327 }
3328
3329
3330 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
3331 {
3332         wpas_p2p_clear_pending_action_tx(wpa_s);
3333         wpa_s->p2p_long_listen = 0;
3334         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3335         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3336
3337         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3338                 wpa_drv_p2p_stop_find(wpa_s);
3339                 return;
3340         }
3341
3342         if (wpa_s->global->p2p)
3343                 p2p_stop_find(wpa_s->global->p2p);
3344
3345         wpas_p2p_remove_pending_group_interface(wpa_s);
3346 }
3347
3348
3349 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3350 {
3351         struct wpa_supplicant *wpa_s = eloop_ctx;
3352         wpa_s->p2p_long_listen = 0;
3353 }
3354
3355
3356 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
3357 {
3358         int res;
3359
3360         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3361                 return -1;
3362
3363         wpas_p2p_clear_pending_action_tx(wpa_s);
3364
3365         if (timeout == 0) {
3366                 /*
3367                  * This is a request for unlimited Listen state. However, at
3368                  * least for now, this is mapped to a Listen state for one
3369                  * hour.
3370                  */
3371                 timeout = 3600;
3372         }
3373         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3374         wpa_s->p2p_long_listen = 0;
3375
3376         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
3377         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
3378                 wpa_s->p2p_long_listen = timeout * 1000;
3379                 eloop_register_timeout(timeout, 0,
3380                                        wpas_p2p_long_listen_timeout,
3381                                        wpa_s, NULL);
3382         }
3383
3384         return res;
3385 }
3386
3387
3388 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
3389                           u8 *buf, size_t len, int p2p_group)
3390 {
3391         struct wpabuf *p2p_ie;
3392         int ret;
3393
3394         if (wpa_s->global->p2p_disabled)
3395                 return -1;
3396         if (wpa_s->global->p2p == NULL)
3397                 return -1;
3398         if (bss == NULL)
3399                 return -1;
3400
3401         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
3402         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
3403                                p2p_group, p2p_ie);
3404         wpabuf_free(p2p_ie);
3405
3406         return ret;
3407 }
3408
3409
3410 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
3411                           const u8 *dst, const u8 *bssid,
3412                           const u8 *ie, size_t ie_len)
3413 {
3414         if (wpa_s->global->p2p_disabled)
3415                 return 0;
3416         if (wpa_s->global->p2p == NULL)
3417                 return 0;
3418
3419         return p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
3420                                 ie, ie_len);
3421 }
3422
3423
3424 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
3425                         const u8 *sa, const u8 *bssid,
3426                         u8 category, const u8 *data, size_t len, int freq)
3427 {
3428         if (wpa_s->global->p2p_disabled)
3429                 return;
3430         if (wpa_s->global->p2p == NULL)
3431                 return;
3432
3433         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
3434                       freq);
3435 }
3436
3437
3438 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
3439 {
3440         if (wpa_s->global->p2p_disabled)
3441                 return;
3442         if (wpa_s->global->p2p == NULL)
3443                 return;
3444
3445         p2p_scan_ie(wpa_s->global->p2p, ies);
3446 }
3447
3448
3449 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
3450 {
3451         p2p_group_deinit(wpa_s->p2p_group);
3452         wpa_s->p2p_group = NULL;
3453
3454         wpa_s->ap_configured_cb = NULL;
3455         wpa_s->ap_configured_cb_ctx = NULL;
3456         wpa_s->ap_configured_cb_data = NULL;
3457         wpa_s->connect_without_scan = NULL;
3458 }
3459
3460
3461 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
3462 {
3463         wpa_s->p2p_long_listen = 0;
3464
3465         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3466                 return wpa_drv_p2p_reject(wpa_s, addr);
3467
3468         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3469                 return -1;
3470
3471         return p2p_reject(wpa_s->global->p2p, addr);
3472 }
3473
3474
3475 /* Invite to reinvoke a persistent group */
3476 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3477                     struct wpa_ssid *ssid, const u8 *go_dev_addr)
3478 {
3479         enum p2p_invite_role role;
3480         u8 *bssid = NULL;
3481
3482         if (ssid->mode == WPAS_MODE_P2P_GO) {
3483                 role = P2P_INVITE_ROLE_GO;
3484                 if (peer_addr == NULL) {
3485                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
3486                                    "address in invitation command");
3487                         return -1;
3488                 }
3489                 if (wpas_p2p_create_iface(wpa_s)) {
3490                         if (wpas_p2p_add_group_interface(wpa_s,
3491                                                          WPA_IF_P2P_GO) < 0) {
3492                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
3493                                            "allocate a new interface for the "
3494                                            "group");
3495                                 return -1;
3496                         }
3497                         bssid = wpa_s->pending_interface_addr;
3498                 } else
3499                         bssid = wpa_s->own_addr;
3500         } else {
3501                 role = P2P_INVITE_ROLE_CLIENT;
3502                 peer_addr = ssid->bssid;
3503         }
3504         wpa_s->pending_invite_ssid_id = ssid->id;
3505
3506         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3507                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
3508                                           ssid->ssid, ssid->ssid_len,
3509                                           go_dev_addr, 1);
3510
3511         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3512                 return -1;
3513
3514         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3515                           ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1);
3516 }
3517
3518
3519 /* Invite to join an active group */
3520 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
3521                           const u8 *peer_addr, const u8 *go_dev_addr)
3522 {
3523         struct wpa_global *global = wpa_s->global;
3524         enum p2p_invite_role role;
3525         u8 *bssid = NULL;
3526         struct wpa_ssid *ssid;
3527
3528         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3529                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3530                         break;
3531         }
3532         if (wpa_s == NULL) {
3533                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
3534                 return -1;
3535         }
3536
3537         ssid = wpa_s->current_ssid;
3538         if (ssid == NULL) {
3539                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
3540                            "invitation");
3541                 return -1;
3542         }
3543
3544         if (ssid->mode == WPAS_MODE_P2P_GO) {
3545                 role = P2P_INVITE_ROLE_ACTIVE_GO;
3546                 bssid = wpa_s->own_addr;
3547                 if (go_dev_addr == NULL)
3548                         go_dev_addr = wpa_s->parent->own_addr;
3549         } else {
3550                 role = P2P_INVITE_ROLE_CLIENT;
3551                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
3552                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
3553                                    "invite to current group");
3554                         return -1;
3555                 }
3556                 bssid = wpa_s->bssid;
3557                 if (go_dev_addr == NULL &&
3558                     !is_zero_ether_addr(wpa_s->go_dev_addr))
3559                         go_dev_addr = wpa_s->go_dev_addr;
3560         }
3561         wpa_s->parent->pending_invite_ssid_id = -1;
3562
3563         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3564                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
3565                                           ssid->ssid, ssid->ssid_len,
3566                                           go_dev_addr, 0);
3567
3568         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3569                 return -1;
3570
3571         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3572                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
3573                           go_dev_addr, 0);
3574 }
3575
3576
3577 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
3578 {
3579         struct wpa_ssid *ssid = wpa_s->current_ssid;
3580         const char *ssid_txt;
3581         u8 go_dev_addr[ETH_ALEN];
3582         int network_id = -1;
3583         int persistent;
3584
3585         if (!wpa_s->show_group_started || !ssid)
3586                 return;
3587
3588         wpa_s->show_group_started = 0;
3589
3590         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
3591         os_memset(go_dev_addr, 0, ETH_ALEN);
3592         if (ssid->bssid_set)
3593                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
3594         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
3595                                                ssid->ssid_len);
3596         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
3597
3598         if (wpa_s->global->p2p_group_formation == wpa_s)
3599                 wpa_s->global->p2p_group_formation = NULL;
3600
3601         if (ssid->passphrase == NULL && ssid->psk_set) {
3602                 char psk[65];
3603                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
3604                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3605                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
3606                         MACSTR "%s",
3607                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
3608                         MAC2STR(go_dev_addr),
3609                         persistent ? " [PERSISTENT]" : "");
3610         } else {
3611                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3612                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
3613                         "go_dev_addr=" MACSTR "%s",
3614                         wpa_s->ifname, ssid_txt, ssid->frequency,
3615                         ssid->passphrase ? ssid->passphrase : "",
3616                         MAC2STR(go_dev_addr),
3617                         persistent ? " [PERSISTENT]" : "");
3618         }
3619
3620         if (persistent)
3621                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
3622                                                              ssid, go_dev_addr);
3623         if (network_id < 0)
3624                 network_id = ssid->id;
3625         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
3626 }
3627
3628
3629 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
3630                           u32 interval1, u32 duration2, u32 interval2)
3631 {
3632         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3633                 return -1;
3634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3635                 return -1;
3636
3637         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
3638             wpa_s->current_ssid == NULL ||
3639             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
3640                 return -1;
3641
3642         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
3643                                 wpa_s->own_addr, wpa_s->assoc_freq,
3644                                 duration1, interval1, duration2, interval2);
3645 }
3646
3647
3648 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
3649                         unsigned int interval)
3650 {
3651         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3652                 return -1;
3653
3654         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3655                 return -1;
3656
3657         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
3658 }
3659
3660
3661 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
3662 {
3663         struct wpa_supplicant *wpa_s = eloop_ctx;
3664
3665         if (wpa_s->conf->p2p_group_idle == 0) {
3666                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
3667                            "disabled");
3668                 return;
3669         }
3670
3671         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
3672                    "group");
3673         wpa_s->removal_reason = P2P_GROUP_REMOVAL_IDLE_TIMEOUT;
3674         wpas_p2p_group_delete(wpa_s);
3675 }
3676
3677
3678 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
3679 {
3680         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3681         if (wpa_s->conf->p2p_group_idle == 0)
3682                 return;
3683
3684         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
3685                 return;
3686
3687         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
3688                    wpa_s->conf->p2p_group_idle);
3689         eloop_register_timeout(wpa_s->conf->p2p_group_idle, 0,
3690                                wpas_p2p_group_idle_timeout, wpa_s, NULL);
3691 }
3692
3693
3694 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
3695                            u16 reason_code, const u8 *ie, size_t ie_len)
3696 {
3697         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3698                 return;
3699         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3700                 return;
3701
3702         p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
3703 }
3704
3705
3706 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
3707                              u16 reason_code, const u8 *ie, size_t ie_len)
3708 {
3709         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3710                 return;
3711         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3712                 return;
3713
3714         p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
3715 }
3716
3717
3718 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
3719 {
3720         struct p2p_data *p2p = wpa_s->global->p2p;
3721
3722         if (p2p == NULL)
3723                 return;
3724
3725         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3726                 return;
3727
3728         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
3729                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
3730
3731         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
3732                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
3733
3734         if (wpa_s->wps &&
3735             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
3736                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
3737
3738         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
3739                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
3740
3741         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
3742                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
3743                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
3744                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
3745                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
3746         }
3747
3748         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
3749                 p2p_set_sec_dev_types(p2p,
3750                                       (void *) wpa_s->conf->sec_device_type,
3751                                       wpa_s->conf->num_sec_device_types);
3752
3753         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
3754                 int i;
3755                 p2p_remove_wps_vendor_extensions(p2p);
3756                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3757                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3758                                 continue;
3759                         p2p_add_wps_vendor_extension(
3760                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
3761                 }
3762         }
3763
3764         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
3765             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3766                 char country[3];
3767                 country[0] = wpa_s->conf->country[0];
3768                 country[1] = wpa_s->conf->country[1];
3769                 country[2] = 0x04;
3770                 p2p_set_country(p2p, country);
3771         }
3772
3773         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
3774                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
3775                                      wpa_s->conf->p2p_ssid_postfix ?
3776                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
3777                                      0);
3778         }
3779
3780         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
3781                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
3782
3783         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
3784                 u8 reg_class, channel;
3785                 int ret;
3786                 unsigned int r;
3787                 if (wpa_s->conf->p2p_listen_reg_class &&
3788                     wpa_s->conf->p2p_listen_channel) {
3789                         reg_class = wpa_s->conf->p2p_listen_reg_class;
3790                         channel = wpa_s->conf->p2p_listen_channel;
3791                 } else {
3792                         reg_class = 81;
3793                         /*
3794                          * Pick one of the social channels randomly as the
3795                          * listen channel.
3796                          */
3797                         os_get_random((u8 *) &r, sizeof(r));
3798                         channel = 1 + (r % 3) * 5;
3799                 }
3800                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
3801                 if (ret)
3802                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
3803                                    "failed: %d", ret);
3804         }
3805         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
3806                 u8 op_reg_class, op_channel, cfg_op_channel;
3807                 int ret = 0;
3808                 unsigned int r;
3809                 if (wpa_s->conf->p2p_oper_reg_class &&
3810                     wpa_s->conf->p2p_oper_channel) {
3811                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3812                         op_channel = wpa_s->conf->p2p_oper_channel;
3813                         cfg_op_channel = 1;
3814                 } else {
3815                         op_reg_class = 81;
3816                         /*
3817                          * Use random operation channel from (1, 6, 11)
3818                          *if no other preference is indicated.
3819                          */
3820                         os_get_random((u8 *) &r, sizeof(r));
3821                         op_channel = 1 + (r % 3) * 5;
3822                         cfg_op_channel = 0;
3823                 }
3824                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
3825                                            cfg_op_channel);
3826                 if (ret)
3827                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
3828                                    "failed: %d", ret);
3829         }
3830 }
3831
3832
3833 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
3834                      int duration)
3835 {
3836         if (!wpa_s->ap_iface)
3837                 return -1;
3838         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
3839                                    duration);
3840 }
3841
3842
3843 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
3844 {
3845         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3846                 return -1;
3847         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3848                 return -1;
3849
3850         wpa_s->global->cross_connection = enabled;
3851         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
3852
3853         if (!enabled) {
3854                 struct wpa_supplicant *iface;
3855
3856                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
3857                 {
3858                         if (iface->cross_connect_enabled == 0)
3859                                 continue;
3860
3861                         iface->cross_connect_enabled = 0;
3862                         iface->cross_connect_in_use = 0;
3863                         wpa_msg(iface->parent, MSG_INFO,
3864                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
3865                                 iface->ifname, iface->cross_connect_uplink);
3866                 }
3867         }
3868
3869         return 0;
3870 }
3871
3872
3873 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
3874 {
3875         struct wpa_supplicant *iface;
3876
3877         if (!uplink->global->cross_connection)
3878                 return;
3879
3880         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
3881                 if (!iface->cross_connect_enabled)
3882                         continue;
3883                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
3884                     0)
3885                         continue;
3886                 if (iface->ap_iface == NULL)
3887                         continue;
3888                 if (iface->cross_connect_in_use)
3889                         continue;
3890
3891                 iface->cross_connect_in_use = 1;
3892                 wpa_msg(iface->parent, MSG_INFO,
3893                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
3894                         iface->ifname, iface->cross_connect_uplink);
3895         }
3896 }
3897
3898
3899 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
3900 {
3901         struct wpa_supplicant *iface;
3902
3903         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
3904                 if (!iface->cross_connect_enabled)
3905                         continue;
3906                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
3907                     0)
3908                         continue;
3909                 if (!iface->cross_connect_in_use)
3910                         continue;
3911
3912                 wpa_msg(iface->parent, MSG_INFO,
3913                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
3914                         iface->ifname, iface->cross_connect_uplink);
3915                 iface->cross_connect_in_use = 0;
3916         }
3917 }
3918
3919
3920 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
3921 {
3922         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
3923             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
3924             wpa_s->cross_connect_disallowed)
3925                 wpas_p2p_disable_cross_connect(wpa_s);
3926         else
3927                 wpas_p2p_enable_cross_connect(wpa_s);
3928         if (!wpa_s->ap_iface)
3929                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3930 }
3931
3932
3933 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
3934 {
3935         wpas_p2p_disable_cross_connect(wpa_s);
3936         if (!wpa_s->ap_iface)
3937                 wpas_p2p_set_group_idle_timeout(wpa_s);
3938 }
3939
3940
3941 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
3942 {
3943         struct wpa_supplicant *iface;
3944
3945         if (!wpa_s->global->cross_connection)
3946                 return;
3947
3948         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3949                 if (iface == wpa_s)
3950                         continue;
3951                 if (iface->drv_flags &
3952                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
3953                         continue;
3954                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
3955                         continue;
3956
3957                 wpa_s->cross_connect_enabled = 1;
3958                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
3959                            sizeof(wpa_s->cross_connect_uplink));
3960                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
3961                            "%s to %s whenever uplink is available",
3962                            wpa_s->ifname, wpa_s->cross_connect_uplink);
3963
3964                 if (iface->ap_iface || iface->current_ssid == NULL ||
3965                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
3966                     iface->cross_connect_disallowed ||
3967                     iface->wpa_state != WPA_COMPLETED)
3968                         break;
3969
3970                 wpa_s->cross_connect_in_use = 1;
3971                 wpa_msg(wpa_s->parent, MSG_INFO,
3972                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
3973                         wpa_s->ifname, wpa_s->cross_connect_uplink);
3974                 break;
3975         }
3976 }
3977
3978
3979 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
3980 {
3981         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
3982             !wpa_s->p2p_in_provisioning)
3983                 return 0; /* not P2P client operation */
3984
3985         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
3986                    "session overlap");
3987         if (wpa_s != wpa_s->parent)
3988                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
3989
3990         if (wpa_s->global->p2p)
3991                 p2p_group_formation_failed(wpa_s->global->p2p);
3992
3993         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
3994                              wpa_s->parent, NULL);
3995
3996         wpas_group_formation_completed(wpa_s, 0);
3997         return 1;
3998 }
3999
4000
4001 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
4002 {
4003         struct p2p_channels chan;
4004
4005         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
4006                 return;
4007
4008         os_memset(&chan, 0, sizeof(chan));
4009         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
4010                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
4011                            "channel list");
4012                 return;
4013         }
4014
4015         p2p_update_channel_list(wpa_s->global->p2p, &chan);
4016 }
4017
4018
4019 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
4020 {
4021         struct wpa_global *global = wpa_s->global;
4022         int found = 0;
4023         const u8 *peer;
4024
4025         if (global->p2p == NULL)
4026                 return -1;
4027
4028         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
4029
4030         if (wpa_s->pending_interface_name[0] &&
4031             !is_zero_ether_addr(wpa_s->pending_interface_addr))
4032                 found = 1;
4033
4034         peer = p2p_get_go_neg_peer(global->p2p);
4035         if (peer) {
4036                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
4037                            MACSTR, MAC2STR(peer));
4038                 p2p_unauthorize(global->p2p, peer);
4039         }
4040
4041         wpas_p2p_stop_find(wpa_s);
4042
4043         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4044                 if (wpa_s == global->p2p_group_formation &&
4045                     (wpa_s->p2p_in_provisioning ||
4046                      wpa_s->parent->pending_interface_type ==
4047                      WPA_IF_P2P_CLIENT)) {
4048                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
4049                                    "formation found - cancelling",
4050                                    wpa_s->ifname);
4051                         found = 1;
4052                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4053                                              wpa_s->parent, NULL);
4054                         wpas_p2p_group_delete(wpa_s);
4055                         break;
4056                 }
4057         }
4058
4059         if (!found) {
4060                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
4061                 return -1;
4062         }
4063
4064         return 0;
4065 }
4066
4067
4068 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
4069 {
4070         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4071                 return;
4072
4073         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
4074                    "being available anymore");
4075         wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE;
4076         wpas_p2p_group_delete(wpa_s);
4077 }
4078
4079
4080 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
4081                                    int freq_24, int freq_5, int freq_overall)
4082 {
4083         struct p2p_data *p2p = wpa_s->global->p2p;
4084         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
4085                 return;
4086         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
4087 }
4088
4089
4090 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
4091 {
4092         u8 peer[ETH_ALEN];
4093         struct p2p_data *p2p = wpa_s->global->p2p;
4094
4095         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
4096                 return -1;
4097
4098         if (hwaddr_aton(addr, peer))
4099                 return -1;
4100
4101         return p2p_unauthorize(p2p, peer);
4102 }
4103
4104
4105 /**
4106  * wpas_p2p_disconnect - Disconnect from a P2P Group
4107  * @wpa_s: Pointer to wpa_supplicant data
4108  * Returns: 0 on success, -1 on failure
4109  *
4110  * This can be used to disconnect from a group in which the local end is a P2P
4111  * Client or to end a P2P Group in case the local end is the Group Owner. If a
4112  * virtual network interface was created for this group, that interface will be
4113  * removed. Otherwise, only the configured P2P group network will be removed
4114  * from the interface.
4115  */
4116 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
4117 {
4118
4119         if (wpa_s == NULL)
4120                 return -1;
4121
4122         wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED;
4123         wpas_p2p_group_delete(wpa_s);
4124
4125         return 0;
4126 }
4127
4128
4129 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
4130 {
4131         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4132                 return 0;
4133
4134         return p2p_in_progress(wpa_s->global->p2p);
4135 }