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 "wpa_supplicant_i.h"
  27 #include "driver_i.h"
  28 #include "ap.h"
  29 #include "config_ssid.h"
  30 #include "config.h"
  31 #include "mlme.h"
  32 #include "notify.h"
  33 #include "scan.h"
  34 #include "bss.h"
  35 #include "wps_supplicant.h"
  36 #include "p2p_supplicant.h"
  37
  38
  39 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  40 static struct wpa_supplicant *
  41 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  42                          int go);
  43 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  44 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  45 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  46                          const u8 *dev_addr, enum p2p_wps_method wps_method);
  47 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  48 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  49
  50
  51 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  52                                       struct wpa_scan_results *scan_res)
  53 {
  54         size_t i;
  55
  56         if (wpa_s->global->p2p_disabled)
  57                 return;
  58
  59         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
  60                    (int) scan_res->num);
  61
  62         for (i = 0; i < scan_res->num; i++) {
  63                 struct wpa_scan_res *bss = scan_res->res[i];
  64                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
  65                                          bss->freq, bss->level,
  66                                          (const u8 *) (bss + 1),
  67                                          bss->ie_len) > 0)
  68                         return;
  69         }
  70
  71         p2p_scan_res_handled(wpa_s->global->p2p);
  72 }
  73
  74
  75 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq)
  76 {
  77         struct wpa_supplicant *wpa_s = ctx;
  78         struct wpa_driver_scan_params params;
  79         int ret;
  80         struct wpabuf *wps_ie, *ies;
  81         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
  82
  83         os_memset(&params, 0, sizeof(params));
  84
  85         /* P2P Wildcard SSID */
  86         params.num_ssids = 1;
  87         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
  88         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
  89
  90         wpa_s->wps->dev.p2p = 1;
  91         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
  92                                         WPS_REQ_ENROLLEE);
  93         if (wps_ie == NULL)
  94                 return -1;
  95
  96         ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
  97         if (ies == NULL) {
  98                 wpabuf_free(wps_ie);
  99                 return -1;
 100         }
 101         wpabuf_put_buf(ies, wps_ie);
 102         wpabuf_free(wps_ie);
 103
 104         p2p_scan_ie(wpa_s->global->p2p, ies);
 105
 106         params.extra_ies = wpabuf_head(ies);
 107         params.extra_ies_len = wpabuf_len(ies);
 108
 109         switch (type) {
 110         case P2P_SCAN_SOCIAL:
 111                 params.freqs = social_channels;
 112                 break;
 113         case P2P_SCAN_FULL:
 114                 break;
 115         case P2P_SCAN_SPECIFIC:
 116                 social_channels[0] = freq;
 117                 social_channels[1] = 0;
 118                 params.freqs = social_channels;
 119                 break;
 120         case P2P_SCAN_SOCIAL_PLUS_ONE:
 121                 social_channels[3] = freq;
 122                 params.freqs = social_channels;
 123                 break;
 124         }
 125
 126         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 127         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
 128                 ret = ieee80211_sta_req_scan(wpa_s, &params);
 129         else
 130                 ret = wpa_drv_scan(wpa_s, &params);
 131
 132         wpabuf_free(ies);
 133
 134         return ret;
 135 }
 136
 137
 138 #ifdef CONFIG_CLIENT_MLME
 139 static void p2p_rx_action_mlme(void *ctx, const u8 *buf, size_t len, int freq)
 140 {
 141         struct wpa_supplicant *wpa_s = ctx;
 142         const struct ieee80211_mgmt *mgmt;
 143         size_t hdr_len;
 144
 145         if (wpa_s->global->p2p_disabled)
 146                 return;
 147         mgmt = (const struct ieee80211_mgmt *) buf;
 148         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 149         if (hdr_len > len)
 150                 return;
 151         p2p_rx_action(wpa_s->global->p2p, mgmt->da, mgmt->sa, mgmt->bssid,
 152                       mgmt->u.action.category,
 153                       &mgmt->u.action.u.vs_public_action.action,
 154                       len - hdr_len, freq);
 155 }
 156 #endif /* CONFIG_CLIENT_MLME */
 157
 158
 159 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 160 {
 161         switch (p2p_group_interface) {
 162         case P2P_GROUP_INTERFACE_PENDING:
 163                 return WPA_IF_P2P_GROUP;
 164         case P2P_GROUP_INTERFACE_GO:
 165                 return WPA_IF_P2P_GO;
 166         case P2P_GROUP_INTERFACE_CLIENT:
 167                 return WPA_IF_P2P_CLIENT;
 168         }
 169
 170         return WPA_IF_P2P_GROUP;
 171 }
 172
 173
 174 static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
 175 {
 176         struct wpa_ssid *ssid;
 177         char *gtype;
 178
 179         ssid = wpa_s->current_ssid;
 180         if (ssid == NULL) {
 181                 /*
 182                  * The current SSID was not known, but there may still be a
 183                  * pending P2P group interface waiting for provisioning.
 184                  */
 185                 ssid = wpa_s->conf->ssid;
 186                 while (ssid) {
 187                         if (ssid->p2p_group &&
 188                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 189                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 190                                 break;
 191                         ssid = ssid->next;
 192                 }
 193         }
 194         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 195                 gtype = "GO";
 196         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 197                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 198                 wpa_s->reassociate = 0;
 199                 wpa_s->disconnected = 1;
 200                 wpa_supplicant_deauthenticate(wpa_s,
 201                                               WLAN_REASON_DEAUTH_LEAVING);
 202                 gtype = "client";
 203         } else
 204                 gtype = "GO";
 205         if (wpa_s->cross_connect_in_use) {
 206                 wpa_s->cross_connect_in_use = 0;
 207                 wpa_msg(wpa_s->parent, MSG_INFO,
 208                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 209                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 210         }
 211         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s",
 212                 wpa_s->ifname, gtype);
 213         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 214                 struct wpa_global *global;
 215                 char *ifname;
 216                 enum wpa_driver_if_type type;
 217                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 218                         wpa_s->ifname);
 219                 global = wpa_s->global;
 220                 ifname = os_strdup(wpa_s->ifname);
 221                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 222                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s);
 223                 wpa_s = global->ifaces;
 224                 if (wpa_s && ifname)
 225                         wpa_drv_if_remove(wpa_s, type, ifname);
 226                 os_free(ifname);
 227                 return;
 228         }
 229
 230         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 231         if (ssid && (ssid->p2p_group ||
 232                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 233                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 234                 int id = ssid->id;
 235                 if (ssid == wpa_s->current_ssid)
 236                         wpa_s->current_ssid = NULL;
 237                 wpas_notify_network_removed(wpa_s, ssid);
 238                 wpa_config_remove_network(wpa_s->conf, id);
 239                 wpa_supplicant_clear_status(wpa_s);
 240         } else {
 241                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 242                            "found");
 243         }
 244         wpa_supplicant_ap_deinit(wpa_s);
 245 }
 246
 247
 248 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 249                                      u8 *go_dev_addr,
 250                                      const u8 *ssid, size_t ssid_len)
 251 {
 252         struct wpa_bss *bss;
 253         const u8 *bssid;
 254         struct wpabuf *p2p;
 255         u8 group_capab;
 256         const u8 *addr;
 257
 258         if (wpa_s->go_params)
 259                 bssid = wpa_s->go_params->peer_interface_addr;
 260         else
 261                 bssid = wpa_s->bssid;
 262
 263         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 264         if (bss == NULL) {
 265                 u8 iface_addr[ETH_ALEN];
 266                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 267                                            iface_addr) == 0)
 268                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 269         }
 270         if (bss == NULL) {
 271                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 272                            "group is persistent - BSS " MACSTR " not found",
 273                            MAC2STR(bssid));
 274                 return 0;
 275         }
 276
 277         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 278         if (p2p == NULL) {
 279                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 280                            "group is persistent - BSS " MACSTR
 281                            " did not include P2P IE", MAC2STR(bssid));
 282                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 283                             (u8 *) (bss + 1), bss->ie_len);
 284                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 285                             ((u8 *) bss + 1) + bss->ie_len,
 286                             bss->beacon_ie_len);
 287                 return 0;
 288         }
 289
 290         group_capab = p2p_get_group_capab(p2p);
 291         addr = p2p_get_go_dev_addr(p2p);
 292         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 293                    "group_capab=0x%x", group_capab);
 294         if (addr) {
 295                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 296                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 297                            MAC2STR(addr));
 298         } else
 299                 os_memset(go_dev_addr, 0, ETH_ALEN);
 300         wpabuf_free(p2p);
 301
 302         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 303                    "go_dev_addr=" MACSTR,
 304                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 305
 306         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 307 }
 308
 309
 310 static void wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 311                                             struct wpa_ssid *ssid,
 312                                             const u8 *go_dev_addr)
 313 {
 314         struct wpa_ssid *s;
 315         int changed = 0;
 316
 317         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 318                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 319         for (s = wpa_s->conf->ssid; s; s = s->next) {
 320                 if (s->disabled == 2 &&
 321                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 322                     s->ssid_len == ssid->ssid_len &&
 323                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 324                         break;
 325         }
 326
 327         if (s) {
 328                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 329                            "entry");
 330                 if (ssid->passphrase && !s->passphrase)
 331                         changed = 1;
 332                 else if (ssid->passphrase && s->passphrase &&
 333                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 334                         changed = 1;
 335         } else {
 336                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 337                            "entry");
 338                 changed = 1;
 339                 s = wpa_config_add_network(wpa_s->conf);
 340                 if (s == NULL)
 341                         return;
 342                 wpa_config_set_network_defaults(s);
 343         }
 344
 345         s->p2p_group = 1;
 346         s->p2p_persistent_group = 1;
 347         s->disabled = 2;
 348         s->bssid_set = 1;
 349         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 350         s->mode = ssid->mode;
 351         s->auth_alg = WPA_AUTH_ALG_OPEN;
 352         s->key_mgmt = WPA_KEY_MGMT_PSK;
 353         s->proto = WPA_PROTO_RSN;
 354         s->pairwise_cipher = WPA_CIPHER_CCMP;
 355         if (ssid->passphrase) {
 356                 os_free(s->passphrase);
 357                 s->passphrase = os_strdup(ssid->passphrase);
 358         }
 359         if (ssid->psk_set) {
 360                 s->psk_set = 1;
 361                 os_memcpy(s->psk, ssid->psk, 32);
 362         }
 363         if (s->passphrase && !s->psk_set)
 364                 wpa_config_update_psk(s);
 365         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 366                 os_free(s->ssid);
 367                 s->ssid = os_malloc(ssid->ssid_len);
 368         }
 369         if (s->ssid) {
 370                 s->ssid_len = ssid->ssid_len;
 371                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 372         }
 373
 374 #ifndef CONFIG_NO_CONFIG_WRITE
 375         if (changed && wpa_s->conf->update_config &&
 376             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 377                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 378         }
 379 #endif /* CONFIG_NO_CONFIG_WRITE */
 380 }
 381
 382
 383 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 384                                            int success)
 385 {
 386         struct wpa_ssid *ssid;
 387         const char *ssid_txt;
 388         int client;
 389         int persistent;
 390         u8 go_dev_addr[ETH_ALEN];
 391
 392         /*
 393          * This callback is likely called for the main interface. Update wpa_s
 394          * to use the group interface if a new interface was created for the
 395          * group.
 396          */
 397         if (wpa_s->global->p2p_group_formation)
 398                 wpa_s = wpa_s->global->p2p_group_formation;
 399         wpa_s->p2p_in_provisioning = 0;
 400
 401         if (!success) {
 402                 wpa_msg(wpa_s->parent, MSG_INFO,
 403                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 404                 wpas_p2p_group_delete(wpa_s);
 405                 return;
 406         }
 407
 408         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 409
 410         ssid = wpa_s->current_ssid;
 411         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 412                 ssid->mode = WPAS_MODE_P2P_GO;
 413                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 414                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 415         }
 416
 417         persistent = 0;
 418         if (ssid) {
 419                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 420                 client = ssid->mode == WPAS_MODE_INFRA;
 421                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 422                         persistent = ssid->p2p_persistent_group;
 423                         os_memcpy(go_dev_addr, wpa_s->parent->own_addr,
 424                                   ETH_ALEN);
 425                 } else
 426                         persistent = wpas_p2p_persistent_group(wpa_s,
 427                                                                go_dev_addr,
 428                                                                ssid->ssid,
 429                                                                ssid->ssid_len);
 430         } else {
 431                 ssid_txt = "";
 432                 client = wpa_s->p2p_group_interface ==
 433                         P2P_GROUP_INTERFACE_CLIENT;
 434         }
 435
 436         wpa_s->show_group_started = 0;
 437         if (client) {
 438                 /*
 439                  * Indicate event only after successfully completed 4-way
 440                  * handshake, i.e., when the interface is ready for data
 441                  * packets.
 442                  */
 443                 wpa_s->show_group_started = 1;
 444         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 445                 char psk[65];
 446                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 447                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 448                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 449                         "%s",
 450                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 451                         MAC2STR(go_dev_addr),
 452                         persistent ? " [PERSISTENT]" : "");
 453                 wpas_p2p_cross_connect_setup(wpa_s);
 454         } else {
 455                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 456                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 457                         "go_dev_addr=" MACSTR "%s",
 458                         wpa_s->ifname, ssid_txt, ssid->frequency,
 459                         ssid && ssid->passphrase ? ssid->passphrase : "",
 460                         MAC2STR(go_dev_addr),
 461                         persistent ? " [PERSISTENT]" : "");
 462                 wpas_p2p_cross_connect_setup(wpa_s);
 463         }
 464
 465         if (persistent)
 466                 wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
 467                                                 go_dev_addr);
 468 }
 469
 470
 471 static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
 472 {
 473         struct wpa_supplicant *wpa_s = eloop_ctx;
 474         struct wpa_supplicant *iface;
 475         int res;
 476         int without_roc;
 477
 478         without_roc = wpa_s->pending_action_without_roc;
 479         wpa_s->pending_action_without_roc = 0;
 480         wpa_printf(MSG_DEBUG, "P2P: Send Action callback (without_roc=%d "
 481                    "pending_action_tx=%p)",
 482                    without_roc, wpa_s->pending_action_tx);
 483
 484         if (wpa_s->pending_action_tx == NULL)
 485                 return;
 486
 487         if (wpa_s->off_channel_freq != wpa_s->pending_action_freq &&
 488             wpa_s->pending_action_freq != 0) {
 489                 wpa_printf(MSG_DEBUG, "P2P: Pending Action frame TX "
 490                            "waiting for another freq=%u (off_channel_freq=%u)",
 491                            wpa_s->pending_action_freq,
 492                            wpa_s->off_channel_freq);
 493                 if (without_roc && wpa_s->off_channel_freq == 0) {
 494                         /*
 495                          * We may get here if wpas_send_action() found us to be
 496                          * on the correct channel, but remain-on-channel cancel
 497                          * event was received before getting here.
 498                          */
 499                         wpa_printf(MSG_DEBUG, "P2P: Schedule "
 500                                    "remain-on-channel to send Action frame");
 501                         if (wpa_drv_remain_on_channel(
 502                                     wpa_s, wpa_s->pending_action_freq, 200) <
 503                             0) {
 504                                 wpa_printf(MSG_DEBUG, "P2P: Failed to request "
 505                                            "driver to remain on channel (%u "
 506                                            "MHz) for Action Frame TX",
 507                                            wpa_s->pending_action_freq);
 508                         } else
 509                                 wpa_s->roc_waiting_drv_freq =
 510                                         wpa_s->pending_action_freq;
 511                 }
 512                 return;
 513         }
 514
 515         /*
 516          * This call is likely going to be on the P2P device instance if the
 517          * driver uses a separate interface for that purpose. However, some
 518          * Action frames are actually sent within a P2P Group and when that is
 519          * the case, we need to follow power saving (e.g., GO buffering the
 520          * frame for a client in PS mode or a client following the advertised
 521          * NoA from its GO). To make that easier for the driver, select the
 522          * correct group interface here.
 523          */
 524         if (os_memcmp(wpa_s->pending_action_src, wpa_s->own_addr, ETH_ALEN) !=
 525             0) {
 526                 /*
 527                  * Try to find a group interface that matches with the source
 528                  * address.
 529                  */
 530                 iface = wpa_s->global->ifaces;
 531                 while (iface) {
 532                         if (os_memcmp(wpa_s->pending_action_src,
 533                                       iface->own_addr, ETH_ALEN) == 0)
 534                                 break;
 535                         iface = iface->next;
 536                 }
 537                 if (iface) {
 538                         wpa_printf(MSG_DEBUG, "P2P: Use group interface %s "
 539                                    "instead of interface %s for Action TX",
 540                                    iface->ifname, wpa_s->ifname);
 541                 } else
 542                         iface = wpa_s;
 543         } else
 544                 iface = wpa_s;
 545
 546         wpa_printf(MSG_DEBUG, "P2P: Sending pending Action frame to "
 547                    MACSTR " using interface %s",
 548                    MAC2STR(wpa_s->pending_action_dst), iface->ifname);
 549         res = wpa_drv_send_action(iface, wpa_s->pending_action_freq,
 550                                   wpa_s->pending_action_dst,
 551                                   wpa_s->pending_action_src,
 552                                   wpa_s->pending_action_bssid,
 553                                   wpabuf_head(wpa_s->pending_action_tx),
 554                                   wpabuf_len(wpa_s->pending_action_tx));
 555         if (res) {
 556                 wpa_printf(MSG_DEBUG, "P2P: Failed to send the pending "
 557                            "Action frame");
 558                 /*
 559                  * Use fake TX status event to allow P2P state machine to
 560                  * continue.
 561                  */
 562                 wpas_send_action_tx_status(
 563                         wpa_s, wpa_s->pending_action_dst,
 564                         wpabuf_head(wpa_s->pending_action_tx),
 565                         wpabuf_len(wpa_s->pending_action_tx),
 566                         P2P_SEND_ACTION_FAILED);
 567         }
 568 }
 569
 570
 571 void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
 572                                 const u8 *data, size_t data_len,
 573                                 enum p2p_send_action_result result)
 574 {
 575         if (wpa_s->global->p2p_disabled)
 576                 return;
 577
 578         if (wpa_s->pending_action_tx == NULL) {
 579                 wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - no "
 580                            "pending operation");
 581                 return;
 582         }
 583
 584         if (os_memcmp(dst, wpa_s->pending_action_dst, ETH_ALEN) != 0) {
 585                 wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - unknown "
 586                            "destination address");
 587                 return;
 588         }
 589
 590         wpabuf_free(wpa_s->pending_action_tx);
 591         wpa_s->pending_action_tx = NULL;
 592
 593         p2p_send_action_cb(wpa_s->global->p2p, wpa_s->pending_action_freq,
 594                            wpa_s->pending_action_dst,
 595                            wpa_s->pending_action_src,
 596                            wpa_s->pending_action_bssid,
 597                            result);
 598
 599         if (wpa_s->pending_pd_before_join &&
 600             (os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,
 601                        ETH_ALEN) == 0 ||
 602              os_memcmp(wpa_s->pending_action_dst,
 603                        wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 604                 wpa_s->pending_pd_before_join = 0;
 605                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 606                            "join-existing-group operation");
 607                 wpas_p2p_join_start(wpa_s);
 608         }
 609 }
 610
 611
 612 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 613                             const u8 *src, const u8 *bssid, const u8 *buf,
 614                             size_t len, unsigned int wait_time)
 615 {
 616         struct wpa_supplicant *wpa_s = ctx;
 617
 618         wpa_printf(MSG_DEBUG, "P2P: Send action frame: freq=%d dst=" MACSTR
 619                    " src=" MACSTR " bssid=" MACSTR " len=%d",
 620                    freq, MAC2STR(dst), MAC2STR(src), MAC2STR(bssid),
 621                    (int) len);
 622
 623         if (wpa_s->pending_action_tx) {
 624                 wpa_printf(MSG_DEBUG, "P2P: Dropped pending Action frame TX "
 625                            "to " MACSTR, MAC2STR(wpa_s->pending_action_dst));
 626                 wpabuf_free(wpa_s->pending_action_tx);
 627         }
 628         wpa_s->pending_action_tx = wpabuf_alloc(len);
 629         if (wpa_s->pending_action_tx == NULL) {
 630                 wpa_printf(MSG_DEBUG, "P2P: Failed to allocate Action frame "
 631                            "TX buffer (len=%llu)", (unsigned long long) len);
 632                 return -1;
 633         }
 634         wpabuf_put_data(wpa_s->pending_action_tx, buf, len);
 635         os_memcpy(wpa_s->pending_action_src, src, ETH_ALEN);
 636         os_memcpy(wpa_s->pending_action_dst, dst, ETH_ALEN);
 637         os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
 638         wpa_s->pending_action_freq = freq;
 639
 640         if (wpa_s->off_channel_freq == freq || freq == 0) {
 641                 wpa_printf(MSG_DEBUG, "P2P: Already on requested channel; "
 642                            "send Action frame immediately");
 643                 /* TODO: Would there ever be need to extend the current
 644                  * duration on the channel? */
 645                 wpa_s->pending_action_without_roc = 1;
 646                 eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
 647                 eloop_register_timeout(0, 0, wpas_send_action_cb, wpa_s, NULL);
 648                 return 0;
 649         }
 650         wpa_s->pending_action_without_roc = 0;
 651
 652         if (wpa_s->roc_waiting_drv_freq == freq) {
 653                 wpa_printf(MSG_DEBUG, "P2P: Already waiting for driver to get "
 654                            "to frequency %u MHz; continue waiting to send the "
 655                            "Action frame", freq);
 656                 return 0;
 657         }
 658
 659         wpa_printf(MSG_DEBUG, "P2P: Schedule Action frame to be transmitted "
 660                    "once the driver gets to the requested channel");
 661         if (wait_time > wpa_s->max_remain_on_chan)
 662                 wait_time = wpa_s->max_remain_on_chan;
 663         if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
 664                 wpa_printf(MSG_DEBUG, "P2P: Failed to request driver "
 665                            "to remain on channel (%u MHz) for Action "
 666                            "Frame TX", freq);
 667                 return -1;
 668         }
 669         wpa_s->roc_waiting_drv_freq = freq;
 670
 671         return 0;
 672 }
 673
 674
 675 static void wpas_send_action_done(void *ctx)
 676 {
 677         struct wpa_supplicant *wpa_s = ctx;
 678         wpa_printf(MSG_DEBUG, "P2P: Action frame sequence done notification");
 679         wpabuf_free(wpa_s->pending_action_tx);
 680         wpa_s->pending_action_tx = NULL;
 681         if (wpa_s->off_channel_freq) {
 682                 wpa_drv_cancel_remain_on_channel(wpa_s);
 683                 wpa_s->off_channel_freq = 0;
 684                 wpa_s->roc_waiting_drv_freq = 0;
 685         }
 686 }
 687
 688
 689 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 690                                     struct p2p_go_neg_results *params)
 691 {
 692         if (wpa_s->go_params == NULL) {
 693                 wpa_s->go_params = os_malloc(sizeof(*params));
 694                 if (wpa_s->go_params == NULL)
 695                         return -1;
 696         }
 697         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 698         return 0;
 699 }
 700
 701
 702 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 703                                     struct p2p_go_neg_results *res)
 704 {
 705         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 706                    MAC2STR(res->peer_interface_addr));
 707         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 708                           res->ssid, res->ssid_len);
 709         wpa_supplicant_ap_deinit(wpa_s);
 710         wpas_copy_go_neg_results(wpa_s, res);
 711         if (res->wps_method == WPS_PBC)
 712                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 713         else {
 714                 u16 dev_pw_id = DEV_PW_DEFAULT;
 715                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 716                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 717                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 718                                    wpa_s->p2p_pin, 1, dev_pw_id);
 719         }
 720 }
 721
 722
 723 static void p2p_go_configured(void *ctx, void *data)
 724 {
 725         struct wpa_supplicant *wpa_s = ctx;
 726         struct p2p_go_neg_results *params = data;
 727         struct wpa_ssid *ssid;
 728
 729         ssid = wpa_s->current_ssid;
 730         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 731                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 732                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 733                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 734                         "go_dev_addr=" MACSTR "%s",
 735                         wpa_s->ifname,
 736                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 737                         ssid->frequency,
 738                         params->passphrase ? params->passphrase : "",
 739                         MAC2STR(wpa_s->parent->own_addr),
 740                         params->persistent_group ? " [PERSISTENT]" : "");
 741                 if (params->persistent_group)
 742                         wpas_p2p_store_persistent_group(
 743                                 wpa_s->parent, ssid,
 744                                 wpa_s->parent->own_addr);
 745                 wpas_p2p_cross_connect_setup(wpa_s);
 746                 return;
 747         }
 748
 749         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 750         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 751                                               params->peer_interface_addr)) {
 752                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 753                            "filtering");
 754                 return;
 755         }
 756         if (params->wps_method == WPS_PBC)
 757                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr);
 758         else if (wpa_s->p2p_pin[0])
 759                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 760                                           wpa_s->p2p_pin, NULL, 0);
 761         os_free(wpa_s->go_params);
 762         wpa_s->go_params = NULL;
 763 }
 764
 765
 766 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 767                               struct p2p_go_neg_results *params,
 768                               int group_formation)
 769 {
 770         struct wpa_ssid *ssid;
 771
 772         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 773                 return;
 774
 775         ssid = wpa_config_add_network(wpa_s->conf);
 776         if (ssid == NULL)
 777                 return;
 778
 779         wpa_config_set_network_defaults(ssid);
 780         ssid->temporary = 1;
 781         ssid->p2p_group = 1;
 782         ssid->p2p_persistent_group = params->persistent_group;
 783         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 784                 WPAS_MODE_P2P_GO;
 785         ssid->frequency = params->freq;
 786         ssid->ssid = os_zalloc(params->ssid_len + 1);
 787         if (ssid->ssid) {
 788                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 789                 ssid->ssid_len = params->ssid_len;
 790         }
 791         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 792         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 793         ssid->proto = WPA_PROTO_RSN;
 794         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 795         ssid->passphrase = os_strdup(params->passphrase);
 796
 797         wpa_s->ap_configured_cb = p2p_go_configured;
 798         wpa_s->ap_configured_cb_ctx = wpa_s;
 799         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 800         wpa_s->connect_without_scan = 1;
 801         wpa_s->reassociate = 1;
 802         wpa_s->disconnected = 0;
 803         wpa_supplicant_req_scan(wpa_s, 0, 0);
 804 }
 805
 806
 807 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 808                                   const struct wpa_supplicant *src)
 809 {
 810         struct wpa_config *d;
 811         const struct wpa_config *s;
 812
 813         d = dst->conf;
 814         s = src->conf;
 815
 816 #define C(n) if (s->n) d->n = os_strdup(s->n)
 817         C(device_name);
 818         C(manufacturer);
 819         C(model_name);
 820         C(model_number);
 821         C(serial_number);
 822         C(device_type);
 823         C(config_methods);
 824 #undef C
 825 }
 826
 827
 828 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 829                                         enum wpa_driver_if_type type)
 830 {
 831         char ifname[120], force_ifname[120];
 832
 833         if (wpa_s->pending_interface_name[0]) {
 834                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 835                            "- skip creation of a new one");
 836                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 837                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 838                                    "unknown?! ifname='%s'",
 839                                    wpa_s->pending_interface_name);
 840                         return -1;
 841                 }
 842                 return 0;
 843         }
 844
 845         os_snprintf(ifname, sizeof(ifname), "%s-p2p-%d", wpa_s->ifname,
 846                     wpa_s->p2p_group_idx);
 847         force_ifname[0] = '\0';
 848
 849         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 850                    ifname);
 851         wpa_s->p2p_group_idx++;
 852
 853         wpa_s->pending_interface_type = type;
 854         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 855                            wpa_s->pending_interface_addr) < 0) {
 856                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 857                            "interface");
 858                 return -1;
 859         }
 860
 861         if (force_ifname[0]) {
 862                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 863                            force_ifname);
 864                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 865                            sizeof(wpa_s->pending_interface_name));
 866         } else
 867                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 868                            sizeof(wpa_s->pending_interface_name));
 869         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 870                    MACSTR, wpa_s->pending_interface_name,
 871                    MAC2STR(wpa_s->pending_interface_addr));
 872
 873         return 0;
 874 }
 875
 876
 877 static void wpas_p2p_remove_pending_group_interface(
 878         struct wpa_supplicant *wpa_s)
 879 {
 880         if (!wpa_s->pending_interface_name[0] ||
 881             is_zero_ether_addr(wpa_s->pending_interface_addr))
 882                 return; /* No pending virtual interface */
 883
 884         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
 885                    wpa_s->pending_interface_name);
 886         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
 887                           wpa_s->pending_interface_name);
 888         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
 889         wpa_s->pending_interface_name[0] = '\0';
 890 }
 891
 892
 893 static struct wpa_supplicant *
 894 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
 895 {
 896         struct wpa_interface iface;
 897         struct wpa_supplicant *group_wpa_s;
 898
 899         if (!wpa_s->pending_interface_name[0]) {
 900                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
 901                 if (!wpas_p2p_create_iface(wpa_s))
 902                         return NULL;
 903                 /*
 904                  * Something has forced us to remove the pending interface; try
 905                  * to create a new one and hope for the best that we will get
 906                  * the same local address.
 907                  */
 908                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
 909                                                  WPA_IF_P2P_CLIENT) < 0)
 910                         return NULL;
 911         }
 912
 913         os_memset(&iface, 0, sizeof(iface));
 914         iface.ifname = wpa_s->pending_interface_name;
 915         iface.driver = wpa_s->driver->name;
 916         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
 917         iface.driver_param = wpa_s->conf->driver_param;
 918         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
 919         if (group_wpa_s == NULL) {
 920                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
 921                            "wpa_supplicant interface");
 922                 return NULL;
 923         }
 924         wpa_s->pending_interface_name[0] = '\0';
 925         group_wpa_s->parent = wpa_s;
 926         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
 927                 P2P_GROUP_INTERFACE_CLIENT;
 928         wpa_s->global->p2p_group_formation = group_wpa_s;
 929
 930         wpas_p2p_clone_config(group_wpa_s, wpa_s);
 931
 932         return group_wpa_s;
 933 }
 934
 935
 936 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 937                                              void *timeout_ctx)
 938 {
 939         struct wpa_supplicant *wpa_s = eloop_ctx;
 940         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
 941         if (wpa_s->global->p2p)
 942                 p2p_group_formation_failed(wpa_s->global->p2p);
 943         wpas_group_formation_completed(wpa_s, 0);
 944 }
 945
 946
 947 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
 948 {
 949         struct wpa_supplicant *wpa_s = ctx;
 950
 951         if (wpa_s->off_channel_freq) {
 952                 wpa_drv_cancel_remain_on_channel(wpa_s);
 953                 wpa_s->off_channel_freq = 0;
 954                 wpa_s->roc_waiting_drv_freq = 0;
 955         }
 956
 957         if (res->status) {
 958                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
 959                         res->status);
 960                 wpas_p2p_remove_pending_group_interface(wpa_s);
 961                 return;
 962         }
 963
 964         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
 965
 966         if (wpa_s->create_p2p_iface) {
 967                 struct wpa_supplicant *group_wpa_s =
 968                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
 969                 if (group_wpa_s == NULL) {
 970                         wpas_p2p_remove_pending_group_interface(wpa_s);
 971                         return;
 972                 }
 973                 if (group_wpa_s != wpa_s) {
 974                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
 975                                   sizeof(group_wpa_s->p2p_pin));
 976                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
 977                 }
 978                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
 979                 wpa_s->pending_interface_name[0] = '\0';
 980                 group_wpa_s->p2p_in_provisioning = 1;
 981
 982                 if (res->role_go)
 983                         wpas_start_wps_go(group_wpa_s, res, 1);
 984                 else
 985                         wpas_start_wps_enrollee(group_wpa_s, res);
 986         } else {
 987                 wpa_s->p2p_in_provisioning = 1;
 988                 wpa_s->global->p2p_group_formation = wpa_s;
 989
 990                 if (res->role_go)
 991                         wpas_start_wps_go(wpa_s, res, 1);
 992                 else
 993                         wpas_start_wps_enrollee(ctx, res);
 994         }
 995
 996         wpa_s->p2p_long_listen = 0;
 997         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
 998
 999         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1000         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1001                                (res->peer_config_timeout % 100) * 10000,
1002                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1003 }
1004
1005
1006 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1007 {
1008         struct wpa_supplicant *wpa_s = ctx;
1009         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1010                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1011 }
1012
1013
1014 void wpas_dev_found(void *ctx, const u8 *addr, const u8 *dev_addr,
1015                     const u8 *pri_dev_type, const char *dev_name,
1016                     u16 config_methods, u8 dev_capab, u8 group_capab)
1017 {
1018         struct wpa_supplicant *wpa_s = ctx;
1019         char devtype[WPS_DEV_TYPE_BUFSIZE];
1020         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1021                 " p2p_dev_addr=" MACSTR
1022                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1023                 "dev_capab=0x%x group_capab=0x%x",
1024                 MAC2STR(addr), MAC2STR(dev_addr),
1025                 wps_dev_type_bin2str(pri_dev_type, devtype, sizeof(devtype)),
1026                 dev_name, config_methods, dev_capab, group_capab);
1027 }
1028
1029
1030 static int wpas_start_listen(void *ctx, unsigned int freq,
1031                              unsigned int duration,
1032                              const struct wpabuf *probe_resp_ie)
1033 {
1034         struct wpa_supplicant *wpa_s = ctx;
1035
1036         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1037
1038         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1039                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1040                            "report received Probe Request frames");
1041                 return -1;
1042         }
1043
1044         wpa_s->pending_listen_freq = freq;
1045         wpa_s->pending_listen_duration = duration;
1046
1047         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1048                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1049                            "to remain on channel (%u MHz) for Listen "
1050                            "state", freq);
1051                 wpa_s->pending_listen_freq = 0;
1052                 return -1;
1053         }
1054         wpa_s->roc_waiting_drv_freq = freq;
1055
1056         return 0;
1057 }
1058
1059
1060 static void wpas_stop_listen(void *ctx)
1061 {
1062         struct wpa_supplicant *wpa_s = ctx;
1063         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1064                 wpa_drv_cancel_remain_on_channel(wpa_s);
1065                 wpa_s->off_channel_freq = 0;
1066                 wpa_s->roc_waiting_drv_freq = 0;
1067         }
1068         wpa_drv_probe_req_report(wpa_s, 0);
1069 }
1070
1071
1072 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1073 {
1074         struct wpa_supplicant *wpa_s = ctx;
1075         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1076 }
1077
1078
1079 static struct p2p_srv_bonjour *
1080 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1081                              const struct wpabuf *query)
1082 {
1083         struct p2p_srv_bonjour *bsrv;
1084         size_t len;
1085
1086         len = wpabuf_len(query);
1087         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1088                          struct p2p_srv_bonjour, list) {
1089                 if (len == wpabuf_len(bsrv->query) &&
1090                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1091                               len) == 0)
1092                         return bsrv;
1093         }
1094         return NULL;
1095 }
1096
1097
1098 static struct p2p_srv_upnp *
1099 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1100                           const char *service)
1101 {
1102         struct p2p_srv_upnp *usrv;
1103
1104         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1105                          struct p2p_srv_upnp, list) {
1106                 if (version == usrv->version &&
1107                     os_strcmp(service, usrv->service) == 0)
1108                         return usrv;
1109         }
1110         return NULL;
1111 }
1112
1113
1114 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1115                                         u8 srv_trans_id)
1116 {
1117         u8 *len_pos;
1118
1119         if (wpabuf_tailroom(resp) < 5)
1120                 return;
1121
1122         /* Length (to be filled) */
1123         len_pos = wpabuf_put(resp, 2);
1124         wpabuf_put_u8(resp, srv_proto);
1125         wpabuf_put_u8(resp, srv_trans_id);
1126         /* Status Code */
1127         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1128         /* Response Data: empty */
1129         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1130 }
1131
1132
1133 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1134                                 struct wpabuf *resp, u8 srv_trans_id)
1135 {
1136         struct p2p_srv_bonjour *bsrv;
1137         u8 *len_pos;
1138
1139         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1140
1141         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1142                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1143                 return;
1144         }
1145
1146         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1147                          struct p2p_srv_bonjour, list) {
1148                 if (wpabuf_tailroom(resp) <
1149                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1150                         return;
1151                 /* Length (to be filled) */
1152                 len_pos = wpabuf_put(resp, 2);
1153                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1154                 wpabuf_put_u8(resp, srv_trans_id);
1155                 /* Status Code */
1156                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1157                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1158                                   wpabuf_head(bsrv->resp),
1159                                   wpabuf_len(bsrv->resp));
1160                 /* Response Data */
1161                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1162                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1163                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1164                              2);
1165         }
1166 }
1167
1168
1169 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1170                                 struct wpabuf *resp, u8 srv_trans_id,
1171                                 const u8 *query, size_t query_len)
1172 {
1173         struct p2p_srv_bonjour *bsrv;
1174         struct wpabuf buf;
1175         u8 *len_pos;
1176
1177         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1178                           query, query_len);
1179         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1180                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1181                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1182                                             srv_trans_id);
1183                 return;
1184         }
1185
1186         if (query_len == 0) {
1187                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1188                 return;
1189         }
1190
1191         if (wpabuf_tailroom(resp) < 5)
1192                 return;
1193         /* Length (to be filled) */
1194         len_pos = wpabuf_put(resp, 2);
1195         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1196         wpabuf_put_u8(resp, srv_trans_id);
1197
1198         wpabuf_set(&buf, query, query_len);
1199         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1200         if (bsrv == NULL) {
1201                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1202                            "available");
1203
1204                 /* Status Code */
1205                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1206                 /* Response Data: empty */
1207                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1208                              2);
1209                 return;
1210         }
1211
1212         /* Status Code */
1213         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1214         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1215                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1216
1217         if (wpabuf_tailroom(resp) >=
1218             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1219                 /* Response Data */
1220                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1221                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1222         }
1223         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1224 }
1225
1226
1227 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1228                              struct wpabuf *resp, u8 srv_trans_id)
1229 {
1230         struct p2p_srv_upnp *usrv;
1231         u8 *len_pos;
1232
1233         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1234
1235         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1236                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1237                 return;
1238         }
1239
1240         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1241                          struct p2p_srv_upnp, list) {
1242                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1243                         return;
1244
1245                 /* Length (to be filled) */
1246                 len_pos = wpabuf_put(resp, 2);
1247                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1248                 wpabuf_put_u8(resp, srv_trans_id);
1249
1250                 /* Status Code */
1251                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1252                 /* Response Data */
1253                 wpabuf_put_u8(resp, usrv->version);
1254                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1255                            usrv->service);
1256                 wpabuf_put_str(resp, usrv->service);
1257                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1258                              2);
1259         }
1260 }
1261
1262
1263 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1264                              struct wpabuf *resp, u8 srv_trans_id,
1265                              const u8 *query, size_t query_len)
1266 {
1267         struct p2p_srv_upnp *usrv;
1268         u8 *len_pos;
1269         u8 version;
1270         char *str;
1271         int count = 0;
1272
1273         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1274                           query, query_len);
1275
1276         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1277                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1278                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1279                                             srv_trans_id);
1280                 return;
1281         }
1282
1283         if (query_len == 0) {
1284                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1285                 return;
1286         }
1287
1288         version = query[0];
1289         str = os_malloc(query_len);
1290         if (str == NULL)
1291                 return;
1292         os_memcpy(str, query + 1, query_len - 1);
1293         str[query_len - 1] = '\0';
1294
1295         if (wpabuf_tailroom(resp) < 5)
1296                 return;
1297
1298         /* Length (to be filled) */
1299         len_pos = wpabuf_put(resp, 2);
1300         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1301         wpabuf_put_u8(resp, srv_trans_id);
1302
1303         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1304                          struct p2p_srv_upnp, list) {
1305                 if (version != usrv->version)
1306                         continue;
1307
1308                 if (os_strcmp(str, "ssdp:all") != 0 &&
1309                     os_strstr(usrv->service, str) == NULL)
1310                         continue;
1311
1312                 if (wpabuf_tailroom(resp) < 2)
1313                         break;
1314                 if (count == 0) {
1315                         /* Status Code */
1316                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1317                         /* Response Data */
1318                         wpabuf_put_u8(resp, version);
1319                 } else
1320                         wpabuf_put_u8(resp, ',');
1321
1322                 count++;
1323
1324                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1325                            usrv->service);
1326                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1327                         break;
1328                 wpabuf_put_str(resp, usrv->service);
1329         }
1330
1331         if (count == 0) {
1332                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1333                            "available");
1334                 /* Status Code */
1335                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1336                 /* Response Data: empty */
1337         }
1338
1339         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1340 }
1341
1342
1343 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1344                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1345 {
1346         struct wpa_supplicant *wpa_s = ctx;
1347         const u8 *pos = tlvs;
1348         const u8 *end = tlvs + tlvs_len;
1349         const u8 *tlv_end;
1350         u16 slen;
1351         struct wpabuf *resp;
1352         u8 srv_proto, srv_trans_id;
1353         size_t buf_len;
1354         char *buf;
1355
1356         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1357                     tlvs, tlvs_len);
1358         buf_len = 2 * tlvs_len + 1;
1359         buf = os_malloc(buf_len);
1360         if (buf) {
1361                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1362                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1363                              MACSTR " %u %u %s",
1364                              freq, MAC2STR(sa), dialog_token, update_indic,
1365                              buf);
1366                 os_free(buf);
1367         }
1368
1369         if (wpa_s->p2p_sd_over_ctrl_iface)
1370                 return; /* to be processed by an external program */
1371
1372         resp = wpabuf_alloc(10000);
1373         if (resp == NULL)
1374                 return;
1375
1376         while (pos + 1 < end) {
1377                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1378                 slen = WPA_GET_LE16(pos);
1379                 pos += 2;
1380                 if (pos + slen > end || slen < 2) {
1381                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1382                                    "length");
1383                         wpabuf_free(resp);
1384                         return;
1385                 }
1386                 tlv_end = pos + slen;
1387
1388                 srv_proto = *pos++;
1389                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1390                            srv_proto);
1391                 srv_trans_id = *pos++;
1392                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1393                            srv_trans_id);
1394
1395                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1396                             pos, tlv_end - pos);
1397
1398
1399                 if (wpa_s->force_long_sd) {
1400                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1401                                    "response");
1402                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1403                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1404                         goto done;
1405                 }
1406
1407                 switch (srv_proto) {
1408                 case P2P_SERV_ALL_SERVICES:
1409                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1410                                    "for all services");
1411                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1412                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1413                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1414                                            "discovery protocols available");
1415                                 wpas_sd_add_proto_not_avail(
1416                                         resp, P2P_SERV_ALL_SERVICES,
1417                                         srv_trans_id);
1418                                 break;
1419                         }
1420                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1421                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1422                         break;
1423                 case P2P_SERV_BONJOUR:
1424                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1425                                             pos, tlv_end - pos);
1426                         break;
1427                 case P2P_SERV_UPNP:
1428                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1429                                          pos, tlv_end - pos);
1430                         break;
1431                 default:
1432                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1433                                    "protocol %u", srv_proto);
1434                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1435                                                     srv_trans_id);
1436                         break;
1437                 }
1438
1439                 pos = tlv_end;
1440         }
1441
1442 done:
1443         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1444
1445         wpabuf_free(resp);
1446 }
1447
1448
1449 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1450                       const u8 *tlvs, size_t tlvs_len)
1451 {
1452         struct wpa_supplicant *wpa_s = ctx;
1453         const u8 *pos = tlvs;
1454         const u8 *end = tlvs + tlvs_len;
1455         const u8 *tlv_end;
1456         u16 slen;
1457         size_t buf_len;
1458         char *buf;
1459
1460         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1461                     tlvs, tlvs_len);
1462         if (tlvs_len > 1500) {
1463                 /* TODO: better way for handling this */
1464                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1465                              P2P_EVENT_SERV_DISC_RESP MACSTR
1466                              " %u <long response: %u bytes>",
1467                              MAC2STR(sa), update_indic,
1468                              (unsigned int) tlvs_len);
1469         } else {
1470                 buf_len = 2 * tlvs_len + 1;
1471                 buf = os_malloc(buf_len);
1472                 if (buf) {
1473                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1474                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1475                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1476                                      MAC2STR(sa), update_indic, buf);
1477                         os_free(buf);
1478                 }
1479         }
1480
1481         while (pos < end) {
1482                 u8 srv_proto, srv_trans_id, status;
1483
1484                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1485                 slen = WPA_GET_LE16(pos);
1486                 pos += 2;
1487                 if (pos + slen > end || slen < 3) {
1488                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1489                                    "length");
1490                         return;
1491                 }
1492                 tlv_end = pos + slen;
1493
1494                 srv_proto = *pos++;
1495                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1496                            srv_proto);
1497                 srv_trans_id = *pos++;
1498                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1499                            srv_trans_id);
1500                 status = *pos++;
1501                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1502                            status);
1503
1504                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1505                             pos, tlv_end - pos);
1506
1507                 pos = tlv_end;
1508         }
1509 }
1510
1511
1512 void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1513                            const struct wpabuf *tlvs)
1514 {
1515         return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1516 }
1517
1518
1519 void * wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1520                                 u8 version, const char *query)
1521 {
1522         struct wpabuf *tlvs;
1523         void *ret;
1524
1525         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1526         if (tlvs == NULL)
1527                 return NULL;
1528         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1529         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1530         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1531         wpabuf_put_u8(tlvs, version);
1532         wpabuf_put_str(tlvs, query);
1533         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1534         wpabuf_free(tlvs);
1535         return ret;
1536 }
1537
1538
1539 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
1540 {
1541         return p2p_sd_cancel_request(wpa_s->global->p2p, req);
1542 }
1543
1544
1545 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1546                           const u8 *dst, u8 dialog_token,
1547                           const struct wpabuf *resp_tlvs)
1548 {
1549         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1550                         resp_tlvs);
1551 }
1552
1553
1554 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1555 {
1556         p2p_sd_service_update(wpa_s->global->p2p);
1557 }
1558
1559
1560 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1561 {
1562         dl_list_del(&bsrv->list);
1563         wpabuf_free(bsrv->query);
1564         wpabuf_free(bsrv->resp);
1565         os_free(bsrv);
1566 }
1567
1568
1569 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1570 {
1571         dl_list_del(&usrv->list);
1572         os_free(usrv->service);
1573         os_free(usrv);
1574 }
1575
1576
1577 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1578 {
1579         struct p2p_srv_bonjour *bsrv, *bn;
1580         struct p2p_srv_upnp *usrv, *un;
1581
1582         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1583                               struct p2p_srv_bonjour, list)
1584                 wpas_p2p_srv_bonjour_free(bsrv);
1585
1586         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1587                               struct p2p_srv_upnp, list)
1588                 wpas_p2p_srv_upnp_free(usrv);
1589
1590         wpas_p2p_sd_service_update(wpa_s);
1591 }
1592
1593
1594 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1595                                  struct wpabuf *query, struct wpabuf *resp)
1596 {
1597         struct p2p_srv_bonjour *bsrv;
1598
1599         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1600         if (bsrv) {
1601                 wpabuf_free(query);
1602                 wpabuf_free(bsrv->resp);
1603                 bsrv->resp = resp;
1604                 return 0;
1605         }
1606
1607         bsrv = os_zalloc(sizeof(*bsrv));
1608         if (bsrv == NULL)
1609                 return -1;
1610         bsrv->query = query;
1611         bsrv->resp = resp;
1612         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1613
1614         wpas_p2p_sd_service_update(wpa_s);
1615         return 0;
1616 }
1617
1618
1619 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1620                                  const struct wpabuf *query)
1621 {
1622         struct p2p_srv_bonjour *bsrv;
1623
1624         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1625         if (bsrv == NULL)
1626                 return -1;
1627         wpas_p2p_srv_bonjour_free(bsrv);
1628         wpas_p2p_sd_service_update(wpa_s);
1629         return 0;
1630 }
1631
1632
1633 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
1634                               const char *service)
1635 {
1636         struct p2p_srv_upnp *usrv;
1637
1638         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
1639                 return 0; /* Already listed */
1640         usrv = os_zalloc(sizeof(*usrv));
1641         if (usrv == NULL)
1642                 return -1;
1643         usrv->version = version;
1644         usrv->service = os_strdup(service);
1645         if (usrv->service == NULL) {
1646                 os_free(usrv);
1647                 return -1;
1648         }
1649         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
1650
1651         wpas_p2p_sd_service_update(wpa_s);
1652         return 0;
1653 }
1654
1655
1656 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
1657                               const char *service)
1658 {
1659         struct p2p_srv_upnp *usrv;
1660
1661         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
1662         if (usrv == NULL)
1663                 return -1;
1664         wpas_p2p_srv_upnp_free(usrv);
1665         wpas_p2p_sd_service_update(wpa_s);
1666         return 0;
1667 }
1668
1669
1670 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
1671                                          const u8 *peer, const char *params)
1672 {
1673         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
1674                 MAC2STR(peer), wps_generate_pin(), params);
1675 }
1676
1677
1678 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
1679                                         const u8 *peer, const char *params)
1680 {
1681         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
1682                 MAC2STR(peer), params);
1683 }
1684
1685
1686 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
1687                         const u8 *dev_addr, const u8 *pri_dev_type,
1688                         const char *dev_name, u16 supp_config_methods,
1689                         u8 dev_capab, u8 group_capab)
1690 {
1691         struct wpa_supplicant *wpa_s = ctx;
1692         char devtype[WPS_DEV_TYPE_BUFSIZE];
1693         char params[200];
1694         u8 empty_dev_type[8];
1695
1696         if (pri_dev_type == NULL) {
1697                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
1698                 pri_dev_type = empty_dev_type;
1699         }
1700         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
1701                     " pri_dev_type=%s name='%s' config_methods=0x%x "
1702                     "dev_capab=0x%x group_capab=0x%x",
1703                     MAC2STR(dev_addr),
1704                     wps_dev_type_bin2str(pri_dev_type, devtype,
1705                                          sizeof(devtype)),
1706                     dev_name, supp_config_methods, dev_capab, group_capab);
1707         params[sizeof(params) - 1] = '\0';
1708
1709         if (config_methods & WPS_CONFIG_DISPLAY)
1710                 wpas_prov_disc_local_display(wpa_s, peer, params);
1711         else if (config_methods & WPS_CONFIG_KEYPAD)
1712                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
1713         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1714                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
1715                         "%s", MAC2STR(peer), params);
1716 }
1717
1718
1719 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
1720 {
1721         struct wpa_supplicant *wpa_s = ctx;
1722         if (config_methods & WPS_CONFIG_DISPLAY)
1723                 wpas_prov_disc_local_keypad(wpa_s, peer, "");
1724         else if (config_methods & WPS_CONFIG_KEYPAD)
1725                 wpas_prov_disc_local_display(wpa_s, peer, "");
1726         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1727                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR,
1728                         MAC2STR(peer));
1729
1730         if (wpa_s->pending_pd_before_join &&
1731             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1732              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
1733                 wpa_s->pending_pd_before_join = 0;
1734                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
1735                            "join-existing-group operation");
1736                 wpas_p2p_join_start(wpa_s);
1737         }
1738 }
1739
1740
1741 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
1742                                   const u8 *go_dev_addr, const u8 *ssid,
1743                                   size_t ssid_len, int *go, u8 *group_bssid,
1744                                   int *force_freq, int persistent_group)
1745 {
1746         struct wpa_supplicant *wpa_s = ctx;
1747         struct wpa_ssid *s;
1748         u8 cur_bssid[ETH_ALEN];
1749         int res;
1750
1751         if (!persistent_group) {
1752                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
1753                            " to join an active group", MAC2STR(sa));
1754                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
1755                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
1756                      == 0 ||
1757                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
1758                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
1759                                    "authorized invitation");
1760                         goto accept_inv;
1761                 }
1762                 /*
1763                  * Do not accept the invitation automatically; notify user and
1764                  * request approval.
1765                  */
1766                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
1767         }
1768
1769         if (!wpa_s->conf->persistent_reconnect)
1770                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
1771
1772         for (s = wpa_s->conf->ssid; s; s = s->next) {
1773                 if (s->disabled == 2 &&
1774                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
1775                     s->ssid_len == ssid_len &&
1776                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
1777                         break;
1778         }
1779
1780         if (!s) {
1781                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
1782                            " requested reinvocation of an unknown group",
1783                            MAC2STR(sa));
1784                 return P2P_SC_FAIL_UNKNOWN_GROUP;
1785         }
1786
1787         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
1788                 *go = 1;
1789                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
1790                         wpa_printf(MSG_DEBUG, "P2P: The only available "
1791                                    "interface is already in use - reject "
1792                                    "invitation");
1793                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
1794                 }
1795                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
1796         } else if (s->mode == WPAS_MODE_P2P_GO) {
1797                 *go = 1;
1798                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
1799                 {
1800                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
1801                                    "interface address for the group");
1802                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
1803                 }
1804                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
1805                           ETH_ALEN);
1806         }
1807
1808 accept_inv:
1809         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
1810             wpa_s->assoc_freq) {
1811                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
1812                            "the channel we are already using");
1813                 *force_freq = wpa_s->assoc_freq;
1814         }
1815
1816         res = wpa_drv_shared_freq(wpa_s);
1817         if (res > 0) {
1818                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
1819                            "with the channel we are already using on a "
1820                            "shared interface");
1821                 *force_freq = res;
1822         }
1823
1824         return P2P_SC_SUCCESS;
1825 }
1826
1827
1828 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
1829                                      const u8 *ssid, size_t ssid_len,
1830                                      const u8 *go_dev_addr, u8 status,
1831                                      int op_freq)
1832 {
1833         struct wpa_supplicant *wpa_s = ctx;
1834         struct wpa_ssid *s;
1835
1836         for (s = wpa_s->conf->ssid; s; s = s->next) {
1837                 if (s->disabled == 2 &&
1838                     s->ssid_len == ssid_len &&
1839                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
1840                         break;
1841         }
1842
1843         if (status == P2P_SC_SUCCESS) {
1844                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
1845                            " was accepted; op_freq=%d MHz",
1846                            MAC2STR(sa), op_freq);
1847                 if (s) {
1848                         wpas_p2p_group_add_persistent(
1849                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
1850                 } else if (bssid) {
1851                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
1852                                       wpa_s->p2p_wps_method);
1853                 }
1854                 return;
1855         }
1856
1857         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
1858                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
1859                            " was rejected (status %u)", MAC2STR(sa), status);
1860                 return;
1861         }
1862
1863         if (!s) {
1864                 if (bssid) {
1865                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
1866                                 "sa=" MACSTR " go_dev_addr=" MACSTR
1867                                 " bssid=" MACSTR " unknown-network",
1868                                 MAC2STR(sa), MAC2STR(go_dev_addr),
1869                                 MAC2STR(bssid));
1870                 } else {
1871                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
1872                                 "sa=" MACSTR " go_dev_addr=" MACSTR
1873                                 " unknown-network",
1874                                 MAC2STR(sa), MAC2STR(go_dev_addr));
1875                 }
1876                 return;
1877         }
1878
1879         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
1880                 " persistent=%d", MAC2STR(sa), s->id);
1881 }
1882
1883
1884 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
1885 {
1886         struct wpa_supplicant *wpa_s = ctx;
1887         struct wpa_ssid *ssid;
1888
1889         if (bssid) {
1890                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
1891                         "status=%d " MACSTR,
1892                         status, MAC2STR(bssid));
1893         } else {
1894                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
1895                         "status=%d ", status);
1896         }
1897
1898         if (wpa_s->pending_invite_ssid_id == -1)
1899                 return; /* Invitation to active group */
1900
1901         if (status != P2P_SC_SUCCESS) {
1902                 wpas_p2p_remove_pending_group_interface(wpa_s);
1903                 return;
1904         }
1905
1906         ssid = wpa_config_get_network(wpa_s->conf,
1907                                       wpa_s->pending_invite_ssid_id);
1908         if (ssid == NULL) {
1909                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
1910                            "data matching with invitation");
1911                 return;
1912         }
1913
1914         wpas_p2p_group_add_persistent(wpa_s, ssid,
1915                                       ssid->mode == WPAS_MODE_P2P_GO, 0);
1916 }
1917
1918
1919 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
1920                                      struct p2p_channels *chan)
1921 {
1922         int i, cla = 0;
1923
1924         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
1925                    "band");
1926
1927         /* Operating class 81 - 2.4 GHz band channels 1..13 */
1928         chan->reg_class[cla].reg_class = 81;
1929         chan->reg_class[cla].channels = 11;
1930         for (i = 0; i < 11; i++)
1931                 chan->reg_class[cla].channel[i] = i + 1;
1932         cla++;
1933
1934         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
1935                    "band");
1936
1937         /* Operating class 115 - 5 GHz, channels 36-48 */
1938         chan->reg_class[cla].reg_class = 115;
1939         chan->reg_class[cla].channels = 4;
1940         chan->reg_class[cla].channel[0] = 36;
1941         chan->reg_class[cla].channel[1] = 40;
1942         chan->reg_class[cla].channel[2] = 44;
1943         chan->reg_class[cla].channel[3] = 48;
1944         cla++;
1945
1946         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
1947                    "band");
1948
1949         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
1950         chan->reg_class[cla].reg_class = 124;
1951         chan->reg_class[cla].channels = 4;
1952         chan->reg_class[cla].channel[0] = 149;
1953         chan->reg_class[cla].channel[1] = 153;
1954         chan->reg_class[cla].channel[2] = 157;
1955         chan->reg_class[cla].channel[3] = 161;
1956         cla++;
1957
1958         chan->reg_classes = cla;
1959         return 0;
1960 }
1961
1962
1963 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1964                                           u16 num_modes,
1965                                           enum hostapd_hw_mode mode)
1966 {
1967         u16 i;
1968
1969         for (i = 0; i < num_modes; i++) {
1970                 if (modes[i].mode == mode)
1971                         return &modes[i];
1972         }
1973
1974         return NULL;
1975 }
1976
1977
1978 static int has_channel(struct hostapd_hw_modes *mode, u8 chan)
1979 {
1980         int i;
1981
1982         for (i = 0; i < mode->num_channels; i++) {
1983                 if (mode->channels[i].chan == chan) {
1984                         return !(mode->channels[i].flag &
1985                                  (HOSTAPD_CHAN_DISABLED |
1986                                   HOSTAPD_CHAN_PASSIVE_SCAN |
1987                                   HOSTAPD_CHAN_NO_IBSS |
1988                                   HOSTAPD_CHAN_RADAR));
1989                 }
1990         }
1991
1992         return 0;
1993 }
1994
1995
1996 struct p2p_oper_class_map {
1997         enum hostapd_hw_mode mode;
1998         u8 op_class;
1999         u8 min_chan;
2000         u8 max_chan;
2001         u8 inc;
2002 };
2003
2004 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2005                                    struct p2p_channels *chan)
2006 {
2007         struct hostapd_hw_modes *modes, *mode;
2008         u16 num_modes, flags;
2009         int cla, op;
2010         struct p2p_oper_class_map op_class[] = {
2011                 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1 },
2012                 { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1 },
2013                 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4 },
2014                 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4 },
2015 #if 0 /* TODO: 40 MHz channels */
2016                 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1 },
2017                 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1 },
2018                 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8 },
2019                 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8 },
2020                 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8 },
2021                 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8 },
2022 #endif
2023                 { -1, 0, 0, 0, 0 }
2024         };
2025
2026         modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
2027         if (modes == NULL) {
2028                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2029                            "of all supported channels; assume dualband "
2030                            "support");
2031                 return wpas_p2p_default_channels(wpa_s, chan);
2032         }
2033
2034         cla = 0;
2035
2036         for (op = 0; op_class[op].op_class; op++) {
2037                 struct p2p_oper_class_map *o = &op_class[op];
2038                 u8 ch;
2039                 struct p2p_reg_class *reg = NULL;
2040
2041                 mode = get_mode(modes, num_modes, o->mode);
2042                 if (mode == NULL)
2043                         continue;
2044                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2045                         if (!has_channel(mode, ch))
2046                                 continue;
2047                         if (reg == NULL) {
2048                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2049                                            "class %u", o->op_class);
2050                                 reg = &chan->reg_class[cla];
2051                                 cla++;
2052                                 reg->reg_class = o->op_class;
2053                         }
2054                         reg->channel[reg->channels] = ch;
2055                         reg->channels++;
2056                 }
2057                 if (reg) {
2058                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2059                                     reg->channel, reg->channels);
2060                 }
2061         }
2062
2063         chan->reg_classes = cla;
2064
2065         ieee80211_sta_free_hw_features(modes, num_modes);
2066
2067         return 0;
2068 }
2069
2070
2071 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2072                         size_t buf_len)
2073 {
2074         struct wpa_supplicant *wpa_s = ctx;
2075
2076         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2077                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2078                         break;
2079         }
2080         if (wpa_s == NULL)
2081                 return -1;
2082
2083         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2084 }
2085
2086
2087 /**
2088  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2089  * @global: Pointer to global data from wpa_supplicant_init()
2090  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2091  * Returns: 0 on success, -1 on failure
2092  */
2093 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2094 {
2095         struct p2p_config p2p;
2096         unsigned int r;
2097         int i;
2098
2099         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2100                 return 0;
2101
2102 #ifdef CONFIG_CLIENT_MLME
2103         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) {
2104                 wpa_s->mlme.public_action_cb = p2p_rx_action_mlme;
2105                 wpa_s->mlme.public_action_cb_ctx = wpa_s;
2106         }
2107 #endif /* CONFIG_CLIENT_MLME */
2108
2109         if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
2110                 wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
2111                 /* Continue anyway; this is not really a fatal error */
2112         }
2113
2114         if (global->p2p)
2115                 return 0;
2116
2117         os_memset(&p2p, 0, sizeof(p2p));
2118         p2p.msg_ctx = wpa_s;
2119         p2p.cb_ctx = wpa_s;
2120         p2p.p2p_scan = wpas_p2p_scan;
2121         p2p.send_action = wpas_send_action;
2122         p2p.send_action_done = wpas_send_action_done;
2123         p2p.go_neg_completed = wpas_go_neg_completed;
2124         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2125         p2p.dev_found = wpas_dev_found;
2126         p2p.start_listen = wpas_start_listen;
2127         p2p.stop_listen = wpas_stop_listen;
2128         p2p.send_probe_resp = wpas_send_probe_resp;
2129         p2p.sd_request = wpas_sd_request;
2130         p2p.sd_response = wpas_sd_response;
2131         p2p.prov_disc_req = wpas_prov_disc_req;
2132         p2p.prov_disc_resp = wpas_prov_disc_resp;
2133         p2p.invitation_process = wpas_invitation_process;
2134         p2p.invitation_received = wpas_invitation_received;
2135         p2p.invitation_result = wpas_invitation_result;
2136         p2p.get_noa = wpas_get_noa;
2137
2138         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2139         os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
2140         p2p.dev_name = wpa_s->conf->device_name;
2141
2142         if (wpa_s->conf->p2p_listen_reg_class &&
2143             wpa_s->conf->p2p_listen_channel) {
2144                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2145                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2146         } else {
2147                 p2p.reg_class = 81;
2148                 /*
2149                  * Pick one of the social channels randomly as the listen
2150                  * channel.
2151                  */
2152                 os_get_random((u8 *) &r, sizeof(r));
2153                 p2p.channel = 1 + (r % 3) * 5;
2154         }
2155
2156         if (wpa_s->conf->p2p_oper_reg_class &&
2157             wpa_s->conf->p2p_oper_channel) {
2158                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2159                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2160         } else {
2161                 p2p.op_reg_class = 81;
2162                 /*
2163                  * For initial tests, pick the operation channel randomly.
2164                  * TODO: Use scan results (etc.) to select the best channel.
2165                  */
2166                 p2p.op_channel = 1 + r % 11;
2167         }
2168         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d  "
2169                    "Own preferred operation channel: %d",
2170                    p2p.channel, p2p.op_channel);
2171         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2172                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2173                 p2p.country[2] = 0x04;
2174         } else
2175                 os_memcpy(p2p.country, "US\x04", 3);
2176
2177         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2178                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2179                            "channel list");
2180                 return -1;
2181         }
2182
2183         if (wpa_s->conf->device_type &&
2184             wps_dev_type_str2bin(wpa_s->conf->device_type, p2p.pri_dev_type) <
2185             0) {
2186                 wpa_printf(MSG_ERROR, "P2P: Invalid device_type");
2187                 return -1;
2188         }
2189
2190         for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
2191                 if (wpa_s->conf->sec_device_type[i] == NULL)
2192                         continue;
2193                 if (wps_dev_type_str2bin(
2194                             wpa_s->conf->sec_device_type[i],
2195                             p2p.sec_dev_type[p2p.num_sec_dev_types]) < 0) {
2196                         wpa_printf(MSG_ERROR, "P2P: Invalid sec_device_type");
2197                         return -1;
2198                 }
2199                 p2p.num_sec_dev_types++;
2200                 if (p2p.num_sec_dev_types == P2P_SEC_DEVICE_TYPES)
2201                         break;
2202         }
2203
2204         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2205                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2206
2207         p2p.max_peers = wpa_s->max_stations ? wpa_s->max_stations : 100;
2208
2209         if (wpa_s->conf->p2p_ssid_postfix) {
2210                 p2p.ssid_postfix_len =
2211                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2212                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2213                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2214                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2215                           p2p.ssid_postfix_len);
2216         }
2217
2218         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2219
2220         global->p2p = p2p_init(&p2p);
2221         if (global->p2p == NULL)
2222                 return -1;
2223
2224         return 0;
2225 }
2226
2227
2228 /**
2229  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2230  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2231  *
2232  * This function deinitialize per-interface P2P data.
2233  */
2234 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2235 {
2236         if (wpa_s->driver && wpa_s->drv_priv)
2237                 wpa_drv_probe_req_report(wpa_s, 0);
2238         os_free(wpa_s->go_params);
2239         wpa_s->go_params = NULL;
2240         wpabuf_free(wpa_s->pending_action_tx);
2241         wpa_s->pending_action_tx = NULL;
2242         eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
2243         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2244         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2245         wpa_s->p2p_long_listen = 0;
2246         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2247         wpas_p2p_remove_pending_group_interface(wpa_s);
2248
2249         /* TODO: remove group interface from the driver if this wpa_s instance
2250          * is on top of a P2P group interface */
2251 }
2252
2253
2254 /**
2255  * wpas_p2p_deinit_global - Deinitialize global P2P module
2256  * @global: Pointer to global data from wpa_supplicant_init()
2257  *
2258  * This function deinitializes the global (per device) P2P module.
2259  */
2260 void wpas_p2p_deinit_global(struct wpa_global *global)
2261 {
2262         struct wpa_supplicant *wpa_s, *tmp;
2263         char *ifname;
2264
2265         if (global->p2p == NULL)
2266                 return;
2267
2268         /* Remove remaining P2P group interfaces */
2269         wpa_s = global->ifaces;
2270         if (wpa_s)
2271                 wpas_p2p_service_flush(wpa_s);
2272         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2273                 wpa_s = wpa_s->next;
2274         while (wpa_s) {
2275                 enum wpa_driver_if_type type;
2276                 tmp = global->ifaces;
2277                 while (tmp &&
2278                        (tmp == wpa_s ||
2279                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2280                         tmp = tmp->next;
2281                 }
2282                 if (tmp == NULL)
2283                         break;
2284                 ifname = os_strdup(tmp->ifname);
2285                 type = wpas_p2p_if_type(tmp->p2p_group_interface);
2286                 wpa_supplicant_remove_iface(global, tmp);
2287                 if (ifname)
2288                         wpa_drv_if_remove(wpa_s, type, ifname);
2289                 os_free(ifname);
2290         }
2291
2292         /*
2293          * Deinit GO data on any possibly remaining interface (if main
2294          * interface is used as GO).
2295          */
2296         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2297                 if (wpa_s->ap_iface)
2298                         wpas_p2p_group_deinit(wpa_s);
2299         }
2300
2301         p2p_deinit(global->p2p);
2302         global->p2p = NULL;
2303 }
2304
2305
2306 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2307 {
2308         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
2309                 return 1; /* P2P group requires a new interface in every case
2310                            */
2311         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2312                 return 0; /* driver does not support concurrent operations */
2313         if (wpa_s->global->ifaces->next)
2314                 return 1; /* more that one interface already in use */
2315         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2316                 return 1; /* this interface is already in use */
2317         return 0;
2318 }
2319
2320
2321 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2322                                  const u8 *peer_addr,
2323                                  enum p2p_wps_method wps_method,
2324                                  int go_intent, const u8 *own_interface_addr,
2325                                  unsigned int force_freq, int persistent_group)
2326 {
2327         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2328                            go_intent, own_interface_addr, force_freq,
2329                            persistent_group);
2330 }
2331
2332
2333 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2334                                 const u8 *peer_addr,
2335                                 enum p2p_wps_method wps_method,
2336                                 int go_intent, const u8 *own_interface_addr,
2337                                 unsigned int force_freq, int persistent_group)
2338 {
2339         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2340                              go_intent, own_interface_addr, force_freq,
2341                              persistent_group);
2342 }
2343
2344
2345 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
2346                                    struct wpa_scan_results *scan_res)
2347 {
2348         struct wpa_bss *bss;
2349         int freq;
2350
2351         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2352
2353         if (wpa_s->global->p2p_disabled)
2354                 return;
2355
2356         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for join",
2357                    scan_res ? (int) scan_res->num : -1);
2358
2359         if (scan_res)
2360                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
2361
2362         freq = p2p_get_oper_freq(wpa_s->global->p2p,
2363                                  wpa_s->pending_join_iface_addr);
2364         if (freq >= 0) {
2365                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2366                            "from P2P peer table: %d MHz", freq);
2367         }
2368         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
2369         if (bss) {
2370                 freq = bss->freq;
2371                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2372                            "from BSS table: %d MHz", freq);
2373         }
2374         if (freq > 0) {
2375                 u16 method;
2376
2377                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
2378                            "prior to joining an existing group (GO " MACSTR
2379                            " freq=%u MHz)",
2380                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
2381                 wpa_s->pending_pd_before_join = 1;
2382
2383                 switch (wpa_s->pending_join_wps_method) {
2384                 case WPS_PIN_LABEL:
2385                 case WPS_PIN_DISPLAY:
2386                         method = WPS_CONFIG_KEYPAD;
2387                         break;
2388                 case WPS_PIN_KEYPAD:
2389                         method = WPS_CONFIG_DISPLAY;
2390                         break;
2391                 case WPS_PBC:
2392                         method = WPS_CONFIG_PUSHBUTTON;
2393                         break;
2394                 default:
2395                         method = 0;
2396                         break;
2397                 }
2398
2399                 if (p2p_prov_disc_req(wpa_s->global->p2p,
2400                                       wpa_s->pending_join_dev_addr, method, 1)
2401                     < 0) {
2402                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
2403                                    "Discovery Request before joining an "
2404                                    "existing group");
2405                         wpa_s->pending_pd_before_join = 0;
2406                         goto start;
2407                 }
2408
2409                 /*
2410                  * Actual join operation will be started from the Action frame
2411                  * TX status callback.
2412                  */
2413                 return;
2414         }
2415
2416         wpa_printf(MSG_DEBUG, "P2P: Target BSS/GO not yet in BSS table - "
2417                    "cannot send Provision Discovery Request");
2418
2419 start:
2420         /* Start join operation immediately */
2421         wpas_p2p_join_start(wpa_s);
2422 }
2423
2424
2425 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
2426 {
2427         struct wpa_supplicant *wpa_s = eloop_ctx;
2428         int ret;
2429         struct wpa_driver_scan_params params;
2430         struct wpabuf *wps_ie, *ies;
2431
2432         os_memset(&params, 0, sizeof(params));
2433
2434         /* P2P Wildcard SSID */
2435         params.num_ssids = 1;
2436         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
2437         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
2438
2439         wpa_s->wps->dev.p2p = 1;
2440         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
2441                                         WPS_REQ_ENROLLEE);
2442         if (wps_ie == NULL) {
2443                 wpas_p2p_scan_res_join(wpa_s, NULL);
2444                 return;
2445         }
2446
2447         ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
2448         if (ies == NULL) {
2449                 wpabuf_free(wps_ie);
2450                 wpas_p2p_scan_res_join(wpa_s, NULL);
2451                 return;
2452         }
2453         wpabuf_put_buf(ies, wps_ie);
2454         wpabuf_free(wps_ie);
2455
2456         p2p_scan_ie(wpa_s->global->p2p, ies);
2457
2458         params.extra_ies = wpabuf_head(ies);
2459         params.extra_ies_len = wpabuf_len(ies);
2460
2461         /*
2462          * Run a scan to update BSS table and start Provision Discovery once
2463          * the new scan results become available.
2464          */
2465         wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
2466         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
2467                 ret = ieee80211_sta_req_scan(wpa_s, &params);
2468         else
2469                 ret = wpa_drv_scan(wpa_s, &params);
2470
2471         wpabuf_free(ies);
2472
2473         if (ret) {
2474                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
2475                            "try again later");
2476                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2477                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
2478         }
2479 }
2480
2481
2482 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
2483                          const u8 *dev_addr, enum p2p_wps_method wps_method)
2484 {
2485         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
2486                    MACSTR " dev " MACSTR ")",
2487                    MAC2STR(iface_addr), MAC2STR(dev_addr));
2488
2489         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
2490         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
2491         wpa_s->pending_join_wps_method = wps_method;
2492
2493         /* Make sure we are not running find during connection establishment */
2494         wpas_p2p_stop_find(wpa_s);
2495
2496         wpas_p2p_join_scan(wpa_s, NULL);
2497         return 0;
2498 }
2499
2500
2501 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
2502 {
2503         struct wpa_supplicant *group;
2504         struct p2p_go_neg_results res;
2505
2506         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
2507         if (group == NULL)
2508                 return -1;
2509         if (group != wpa_s) {
2510                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
2511                           sizeof(group->p2p_pin));
2512                 group->p2p_wps_method = wpa_s->p2p_wps_method;
2513         }
2514
2515         group->p2p_in_provisioning = 1;
2516
2517         os_memset(&res, 0, sizeof(res));
2518         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
2519                   ETH_ALEN);
2520         res.wps_method = wpa_s->pending_join_wps_method;
2521         wpas_start_wps_enrollee(group, &res);
2522
2523         /*
2524          * Allow a longer timeout for join-a-running-group than normal 15
2525          * second group formation timeout since the GO may not have authorized
2526          * our connection yet.
2527          */
2528         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2529         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
2530                                wpa_s, NULL);
2531
2532         return 0;
2533 }
2534
2535
2536 /**
2537  * wpas_p2p_connect - Request P2P Group Formation to be started
2538  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2539  * @peer_addr: Address of the peer P2P Device
2540  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
2541  * @persistent_group: Whether to create a persistent group
2542  * @join: Whether to join an existing group (as a client) instead of starting
2543  *      Group Owner negotiation; @peer_addr is BSSID in that case
2544  * @auth: Whether to only authorize the connection instead of doing that and
2545  *      initiating Group Owner negotiation
2546  * @go_intent: GO Intent or -1 to use default
2547  * @freq: Frequency for the group or 0 for auto-selection
2548  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
2549  *      failure, -2 on failure due to channel not currently available,
2550  *      -3 if forced channel is not supported
2551  */
2552 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
2553                      const char *pin, enum p2p_wps_method wps_method,
2554                      int persistent_group, int join, int auth, int go_intent,
2555                      int freq)
2556 {
2557         int force_freq = 0, oper_freq = 0;
2558         u8 bssid[ETH_ALEN];
2559         int ret = 0;
2560         enum wpa_driver_if_type iftype;
2561
2562         if (go_intent < 0)
2563                 go_intent = wpa_s->conf->p2p_go_intent;
2564
2565         if (!auth)
2566                 wpa_s->p2p_long_listen = 0;
2567
2568         wpa_s->p2p_wps_method = wps_method;
2569
2570         if (pin)
2571                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
2572         else if (wps_method == WPS_PIN_DISPLAY) {
2573                 ret = wps_generate_pin();
2574                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
2575                             ret);
2576                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
2577                            wpa_s->p2p_pin);
2578         } else
2579                 wpa_s->p2p_pin[0] = '\0';
2580
2581         if (join) {
2582                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
2583                 if (auth) {
2584                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
2585                                    "connect a running group from " MACSTR,
2586                                    MAC2STR(peer_addr));
2587                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
2588                         return ret;
2589                 }
2590                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
2591                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
2592                                            iface_addr) < 0) {
2593                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
2594                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
2595                                          dev_addr);
2596                 }
2597                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) <
2598                     0)
2599                         return -1;
2600                 return ret;
2601         }
2602
2603         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
2604             wpa_s->assoc_freq)
2605                 oper_freq = wpa_s->assoc_freq;
2606         else {
2607                 oper_freq = wpa_drv_shared_freq(wpa_s);
2608                 if (oper_freq < 0)
2609                         oper_freq = 0;
2610         }
2611
2612         if (freq > 0) {
2613                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
2614                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
2615                                    "(%u MHz) is not supported for P2P uses",
2616                                    freq);
2617                         return -3;
2618                 }
2619
2620                 if (oper_freq > 0 && freq != oper_freq &&
2621                     !(wpa_s->drv_flags &
2622                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
2623                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
2624                                    "on %u MHz while connected on another "
2625                                    "channel (%u MHz)", freq, oper_freq);
2626                         return -2;
2627                 }
2628                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
2629                            "requested channel (%u MHz)", freq);
2630                 force_freq = freq;
2631         } else if (oper_freq > 0 &&
2632                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
2633                 if (!(wpa_s->drv_flags &
2634                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
2635                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
2636                                    "while connected on non-P2P supported "
2637                                    "channel (%u MHz)", oper_freq);
2638                         return -2;
2639                 }
2640                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
2641                            "(%u MHz) not available for P2P - try to use "
2642                            "another channel", oper_freq);
2643                 force_freq = 0;
2644         } else if (oper_freq > 0) {
2645                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
2646                            "channel we are already using (%u MHz) on another "
2647                            "interface", oper_freq);
2648                 force_freq = oper_freq;
2649         }
2650
2651         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
2652
2653         if (!wpa_s->create_p2p_iface) {
2654                 if (auth) {
2655                         if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
2656                                                  go_intent, wpa_s->own_addr,
2657                                                  force_freq, persistent_group)
2658                             < 0)
2659                                 return -1;
2660                         return ret;
2661                 }
2662                 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
2663                                           go_intent, wpa_s->own_addr,
2664                                           force_freq, persistent_group) < 0)
2665                         return -1;
2666                 return ret;
2667         }
2668
2669         /* Prepare to add a new interface for the group */
2670         iftype = WPA_IF_P2P_GROUP;
2671         if (join)
2672                 iftype = WPA_IF_P2P_CLIENT;
2673         else if (go_intent == 15)
2674                 iftype = WPA_IF_P2P_GO;
2675         if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
2676                 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2677                            "interface for the group");
2678                 return -1;
2679         }
2680
2681         if (auth) {
2682                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
2683                                          go_intent,
2684                                          wpa_s->pending_interface_addr,
2685                                          force_freq, persistent_group) < 0)
2686                         return -1;
2687                 return ret;
2688         }
2689         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
2690                                   wpa_s->pending_interface_addr,
2691                                   force_freq, persistent_group) < 0) {
2692                 wpas_p2p_remove_pending_group_interface(wpa_s);
2693                 return -1;
2694         }
2695         return ret;
2696 }
2697
2698
2699 /**
2700  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
2701  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2702  * @freq: Frequency of the channel in MHz
2703  * @duration: Duration of the stay on the channel in milliseconds
2704  *
2705  * This callback is called when the driver indicates that it has started the
2706  * requested remain-on-channel duration.
2707  */
2708 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
2709                                    unsigned int freq, unsigned int duration)
2710 {
2711         wpa_s->roc_waiting_drv_freq = 0;
2712         wpa_s->off_channel_freq = freq;
2713         wpas_send_action_cb(wpa_s, NULL);
2714         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
2715                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
2716                               wpa_s->pending_listen_duration);
2717                 wpa_s->pending_listen_freq = 0;
2718         }
2719 }
2720
2721
2722 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
2723                                  unsigned int timeout)
2724 {
2725         /* Limit maximum Listen state time based on driver limitation. */
2726         if (timeout > wpa_s->max_remain_on_chan)
2727                 timeout = wpa_s->max_remain_on_chan;
2728
2729         return p2p_listen(wpa_s->global->p2p, timeout);
2730 }
2731
2732
2733 /**
2734  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
2735  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2736  * @freq: Frequency of the channel in MHz
2737  *
2738  * This callback is called when the driver indicates that a remain-on-channel
2739  * operation has been completed, i.e., the duration on the requested channel
2740  * has timed out.
2741  */
2742 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
2743                                           unsigned int freq)
2744 {
2745         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
2746                    "(p2p_long_listen=%d pending_action_tx=%p)",
2747                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
2748         wpa_s->off_channel_freq = 0;
2749         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
2750                 return; /* P2P module started a new operation */
2751         if (wpa_s->pending_action_tx)
2752                 return;
2753         if (wpa_s->p2p_long_listen > 0)
2754                 wpa_s->p2p_long_listen -= 5;
2755         if (wpa_s->p2p_long_listen > 0) {
2756                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
2757                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen * 1000);
2758         }
2759 }
2760
2761
2762 /**
2763  * wpas_p2p_group_remove - Remove a P2P group
2764  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2765  * @ifname: Network interface name of the group interface or "*" to remove all
2766  *      groups
2767  * Returns: 0 on success, -1 on failure
2768  *
2769  * This function is used to remove a P2P group. This can be used to disconnect
2770  * from a group in which the local end is a P2P Client or to end a P2P Group in
2771  * case the local end is the Group Owner. If a virtual network interface was
2772  * created for this group, that interface will be removed. Otherwise, only the
2773  * configured P2P group network will be removed from the interface.
2774  */
2775 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
2776 {
2777         struct wpa_global *global = wpa_s->global;
2778
2779         if (os_strcmp(ifname, "*") == 0) {
2780                 struct wpa_supplicant *prev;
2781                 wpa_s = global->ifaces;
2782                 while (wpa_s) {
2783                         prev = wpa_s;
2784                         wpa_s = wpa_s->next;
2785                         wpas_p2p_group_delete(prev);
2786                 }
2787                 return 0;
2788         }
2789
2790         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2791                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2792                         break;
2793         }
2794
2795         if (wpa_s == NULL)
2796                 return -1;
2797
2798         wpas_p2p_group_delete(wpa_s);
2799
2800         return 0;
2801 }
2802
2803
2804 static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
2805                                     struct p2p_go_neg_results *params,
2806                                     int freq)
2807 {
2808         u8 bssid[ETH_ALEN];
2809         int res;
2810
2811         os_memset(params, 0, sizeof(*params));
2812         params->role_go = 1;
2813         params->freq = 2412;
2814         if (freq)
2815                 params->freq = freq;
2816         else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
2817                  wpa_s->conf->p2p_oper_channel >= 1 &&
2818                  wpa_s->conf->p2p_oper_channel <= 11)
2819                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
2820         else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
2821                  wpa_s->conf->p2p_oper_reg_class == 118)
2822                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
2823         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
2824             wpa_s->assoc_freq && !freq) {
2825                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
2826                            "already using");
2827                 params->freq = wpa_s->assoc_freq;
2828         }
2829
2830         res = wpa_drv_shared_freq(wpa_s);
2831         if (res > 0 && !freq) {
2832                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
2833                            "already using on a shared interface");
2834                 params->freq = res;
2835         }
2836 }
2837
2838
2839 static struct wpa_supplicant *
2840 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
2841                          int go)
2842 {
2843         struct wpa_supplicant *group_wpa_s;
2844
2845         if (!wpas_p2p_create_iface(wpa_s))
2846                 return wpa_s;
2847
2848         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2849                                          WPA_IF_P2P_CLIENT) < 0)
2850                 return NULL;
2851         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
2852         if (group_wpa_s == NULL) {
2853                 wpas_p2p_remove_pending_group_interface(wpa_s);
2854                 return NULL;
2855         }
2856
2857         return group_wpa_s;
2858 }
2859
2860
2861 /**
2862  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
2863  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2864  * @persistent_group: Whether to create a persistent group
2865  * @freq: Frequency for the group or 0 to indicate no hardcoding
2866  * Returns: 0 on success, -1 on failure
2867  *
2868  * This function creates a new P2P group with the local end as the Group Owner,
2869  * i.e., without using Group Owner Negotiation.
2870  */
2871 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
2872                        int freq)
2873 {
2874         struct p2p_go_neg_results params;
2875
2876         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
2877                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
2878                            "(%u MHz) is not supported for P2P uses",
2879                            freq);
2880                 return -1;
2881         }
2882
2883         wpas_p2p_init_go_params(wpa_s, &params, freq);
2884         p2p_go_params(wpa_s->global->p2p, &params);
2885         params.persistent_group = persistent_group;
2886
2887         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
2888         if (wpa_s == NULL)
2889                 return -1;
2890         wpas_start_wps_go(wpa_s, &params, 0);
2891
2892         return 0;
2893 }
2894
2895
2896 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
2897                                  struct wpa_ssid *params, int addr_allocated)
2898 {
2899         struct wpa_ssid *ssid;
2900
2901         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
2902         if (wpa_s == NULL)
2903                 return -1;
2904
2905         wpa_supplicant_ap_deinit(wpa_s);
2906
2907         ssid = wpa_config_add_network(wpa_s->conf);
2908         if (ssid == NULL)
2909                 return -1;
2910         wpas_notify_network_added(wpa_s, ssid);
2911         wpa_config_set_network_defaults(ssid);
2912         ssid->temporary = 1;
2913         ssid->proto = WPA_PROTO_RSN;
2914         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
2915         ssid->group_cipher = WPA_CIPHER_CCMP;
2916         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
2917         ssid->ssid = os_malloc(params->ssid_len);
2918         if (ssid->ssid == NULL) {
2919                 wpas_notify_network_removed(wpa_s, ssid);
2920                 wpa_config_remove_network(wpa_s->conf, ssid->id);
2921                 return -1;
2922         }
2923         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
2924         ssid->ssid_len = params->ssid_len;
2925         ssid->p2p_group = 1;
2926         if (params->psk_set) {
2927                 os_memcpy(ssid->psk, params->psk, 32);
2928                 ssid->psk_set = 1;
2929         }
2930         if (params->passphrase)
2931                 ssid->passphrase = os_strdup(params->passphrase);
2932
2933         wpa_supplicant_select_network(wpa_s, ssid);
2934
2935         wpa_s->show_group_started = 1;
2936
2937         return 0;
2938 }
2939
2940
2941 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
2942                                   struct wpa_ssid *ssid, int addr_allocated,
2943                                   int freq)
2944 {
2945         struct p2p_go_neg_results params;
2946
2947         if (ssid->disabled != 2 || ssid->ssid == NULL)
2948                 return -1;
2949
2950         wpa_s->p2p_long_listen = 0;
2951         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2952
2953         if (ssid->mode == WPAS_MODE_INFRA)
2954                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
2955
2956         if (ssid->mode != WPAS_MODE_P2P_GO)
2957                 return -1;
2958
2959         wpas_p2p_init_go_params(wpa_s, &params, freq);
2960
2961         params.role_go = 1;
2962         if (ssid->passphrase == NULL ||
2963             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
2964                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
2965                            "group");
2966                 return -1;
2967         }
2968         os_strlcpy(params.passphrase, ssid->passphrase,
2969                    sizeof(params.passphrase));
2970         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
2971         params.ssid_len = ssid->ssid_len;
2972         params.persistent_group = 1;
2973
2974         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
2975         if (wpa_s == NULL)
2976                 return -1;
2977
2978         wpas_start_wps_go(wpa_s, &params, 0);
2979
2980         return 0;
2981 }
2982
2983
2984 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
2985                                struct wpabuf *proberesp_ies)
2986 {
2987         struct wpa_supplicant *wpa_s = ctx;
2988         if (wpa_s->ap_iface) {
2989                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
2990                 if (beacon_ies) {
2991                         wpabuf_free(hapd->p2p_beacon_ie);
2992                         hapd->p2p_beacon_ie = beacon_ies;
2993                 }
2994                 wpabuf_free(hapd->p2p_probe_resp_ie);
2995                 hapd->p2p_probe_resp_ie = proberesp_ies;
2996         } else {
2997                 wpabuf_free(beacon_ies);
2998                 wpabuf_free(proberesp_ies);
2999         }
3000         wpa_supplicant_ap_update_beacon(wpa_s);
3001 }
3002
3003
3004 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
3005                                        int persistent_group,
3006                                        int group_formation)
3007 {
3008         struct p2p_group *group;
3009         struct p2p_group_config *cfg;
3010
3011         cfg = os_zalloc(sizeof(*cfg));
3012         if (cfg == NULL)
3013                 return NULL;
3014
3015         cfg->persistent_group = persistent_group;
3016         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
3017         cfg->cb_ctx = wpa_s;
3018         cfg->ie_update = wpas_p2p_ie_update;
3019
3020         group = p2p_group_init(wpa_s->global->p2p, cfg);
3021         if (group == NULL)
3022                 os_free(cfg);
3023         if (!group_formation)
3024                 p2p_group_notif_formation_done(group);
3025         wpa_s->p2p_group = group;
3026         return group;
3027 }
3028
3029
3030 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3031                           int registrar)
3032 {
3033         if (!wpa_s->p2p_in_provisioning) {
3034                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
3035                            "provisioning not in progress");
3036                 return;
3037         }
3038
3039         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
3040                              NULL);
3041         if (wpa_s->global->p2p)
3042                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
3043         wpas_group_formation_completed(wpa_s, 1);
3044 }
3045
3046
3047 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3048                        const char *config_method)
3049 {
3050         u16 config_methods;
3051
3052         if (os_strcmp(config_method, "display") == 0)
3053                 config_methods = WPS_CONFIG_DISPLAY;
3054         else if (os_strcmp(config_method, "keypad") == 0)
3055                 config_methods = WPS_CONFIG_KEYPAD;
3056         else if (os_strcmp(config_method, "pbc") == 0 ||
3057                  os_strcmp(config_method, "pushbutton") == 0)
3058                 config_methods = WPS_CONFIG_PUSHBUTTON;
3059         else
3060                 return -1;
3061
3062         if (wpa_s->global->p2p == NULL)
3063                 return -1;
3064
3065         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
3066                                  config_methods, 0);
3067 }
3068
3069
3070 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
3071                               char *end)
3072 {
3073         return p2p_scan_result_text(ies, ies_len, buf, end);
3074 }
3075
3076
3077 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
3078 {
3079         if (!wpa_s->pending_action_tx)
3080                 return;
3081
3082         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
3083                    "operation request");
3084         wpabuf_free(wpa_s->pending_action_tx);
3085         wpa_s->pending_action_tx = NULL;
3086 }
3087
3088
3089 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
3090                   enum p2p_discovery_type type)
3091 {
3092         wpas_p2p_clear_pending_action_tx(wpa_s);
3093         wpa_s->p2p_long_listen = 0;
3094
3095         return p2p_find(wpa_s->global->p2p, timeout, type);
3096 }
3097
3098
3099 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
3100 {
3101         wpas_p2p_clear_pending_action_tx(wpa_s);
3102         wpa_s->p2p_long_listen = 0;
3103         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3104
3105         p2p_stop_find(wpa_s->global->p2p);
3106
3107         wpas_p2p_remove_pending_group_interface(wpa_s);
3108 }
3109
3110
3111 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3112 {
3113         struct wpa_supplicant *wpa_s = eloop_ctx;
3114         wpa_s->p2p_long_listen = 0;
3115 }
3116
3117
3118 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
3119 {
3120         int res;
3121
3122         wpas_p2p_clear_pending_action_tx(wpa_s);
3123
3124         if (timeout == 0) {
3125                 /*
3126                  * This is a request for unlimited Listen state. However, at
3127                  * least for now, this is mapped to a Listen state for one
3128                  * hour.
3129                  */
3130                 timeout = 3600;
3131         }
3132         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3133         wpa_s->p2p_long_listen = 0;
3134
3135         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
3136         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
3137                 wpa_s->p2p_long_listen = timeout;
3138                 eloop_register_timeout(timeout, 0,
3139                                        wpas_p2p_long_listen_timeout,
3140                                        wpa_s, NULL);
3141         }
3142
3143         return res;
3144 }
3145
3146
3147 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
3148                           u8 *buf, size_t len, int p2p_group)
3149 {
3150         struct wpabuf *p2p_ie;
3151         int ret;
3152
3153         if (wpa_s->global->p2p_disabled)
3154                 return -1;
3155         if (wpa_s->global->p2p == NULL)
3156                 return -1;
3157         if (bss == NULL)
3158                 return -1;
3159
3160         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
3161         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
3162                                p2p_group, p2p_ie);
3163         wpabuf_free(p2p_ie);
3164
3165         return ret;
3166 }
3167
3168
3169 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
3170                           const u8 *ie, size_t ie_len)
3171 {
3172         if (wpa_s->global->p2p_disabled)
3173                 return 0;
3174         if (wpa_s->global->p2p == NULL)
3175                 return 0;
3176
3177         return p2p_probe_req_rx(wpa_s->global->p2p, addr, ie, ie_len);
3178 }
3179
3180
3181 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
3182                         const u8 *sa, const u8 *bssid,
3183                         u8 category, const u8 *data, size_t len, int freq)
3184 {
3185         if (wpa_s->global->p2p_disabled)
3186                 return;
3187         if (wpa_s->global->p2p == NULL)
3188                 return;
3189
3190         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
3191                       freq);
3192 }
3193
3194
3195 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
3196 {
3197         if (wpa_s->global->p2p_disabled)
3198                 return;
3199         if (wpa_s->global->p2p == NULL)
3200                 return;
3201
3202         p2p_scan_ie(wpa_s->global->p2p, ies);
3203 }
3204
3205
3206 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
3207 {
3208         p2p_group_deinit(wpa_s->p2p_group);
3209         wpa_s->p2p_group = NULL;
3210 }
3211
3212
3213 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
3214 {
3215         wpa_s->p2p_long_listen = 0;
3216
3217         return p2p_reject(wpa_s->global->p2p, addr);
3218 }
3219
3220
3221 /* Invite to reinvoke a persistent group */
3222 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3223                     struct wpa_ssid *ssid, const u8 *go_dev_addr)
3224 {
3225         enum p2p_invite_role role;
3226         u8 *bssid = NULL;
3227
3228         if (ssid->mode == WPAS_MODE_P2P_GO) {
3229                 role = P2P_INVITE_ROLE_GO;
3230                 if (peer_addr == NULL) {
3231                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
3232                                    "address in invitation command");
3233                         return -1;
3234                 }
3235                 if (wpas_p2p_create_iface(wpa_s)) {
3236                         if (wpas_p2p_add_group_interface(wpa_s,
3237                                                          WPA_IF_P2P_GO) < 0) {
3238                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
3239                                            "allocate a new interface for the "
3240                                            "group");
3241                                 return -1;
3242                         }
3243                         bssid = wpa_s->pending_interface_addr;
3244                 } else
3245                         bssid = wpa_s->own_addr;
3246         } else {
3247                 role = P2P_INVITE_ROLE_CLIENT;
3248                 peer_addr = ssid->bssid;
3249         }
3250         wpa_s->pending_invite_ssid_id = ssid->id;
3251
3252         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3253                           ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1);
3254 }
3255
3256
3257 /* Invite to join an active group */
3258 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
3259                           const u8 *peer_addr, const u8 *go_dev_addr)
3260 {
3261         struct wpa_global *global = wpa_s->global;
3262         enum p2p_invite_role role;
3263         u8 *bssid = NULL;
3264         struct wpa_ssid *ssid;
3265
3266         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3267                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3268                         break;
3269         }
3270         if (wpa_s == NULL) {
3271                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
3272                 return -1;
3273         }
3274
3275         ssid = wpa_s->current_ssid;
3276         if (ssid == NULL) {
3277                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
3278                            "invitation");
3279                 return -1;
3280         }
3281
3282         if (ssid->mode == WPAS_MODE_P2P_GO) {
3283                 role = P2P_INVITE_ROLE_ACTIVE_GO;
3284                 bssid = wpa_s->own_addr;
3285                 if (go_dev_addr == NULL)
3286                         go_dev_addr = wpa_s->parent->own_addr;
3287         } else {
3288                 role = P2P_INVITE_ROLE_CLIENT;
3289                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
3290                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
3291                                    "invite to current group");
3292                         return -1;
3293                 }
3294                 bssid = wpa_s->bssid;
3295                 if (go_dev_addr == NULL &&
3296                     !is_zero_ether_addr(wpa_s->go_dev_addr))
3297                         go_dev_addr = wpa_s->go_dev_addr;
3298         }
3299         wpa_s->pending_invite_ssid_id = -1;
3300
3301         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3302                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
3303                           go_dev_addr, 0);
3304 }
3305
3306
3307 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
3308 {
3309         struct wpa_ssid *ssid = wpa_s->current_ssid;
3310         const char *ssid_txt;
3311         u8 go_dev_addr[ETH_ALEN];
3312         int persistent;
3313
3314         if (!wpa_s->show_group_started || !ssid)
3315                 return;
3316
3317         wpa_s->show_group_started = 0;
3318
3319         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
3320         os_memset(go_dev_addr, 0, ETH_ALEN);
3321         if (ssid->bssid_set)
3322                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
3323         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
3324                                                ssid->ssid_len);
3325         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
3326
3327         if (ssid->passphrase == NULL && ssid->psk_set) {
3328                 char psk[65];
3329                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
3330                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3331                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
3332                         MACSTR "%s",
3333                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
3334                         MAC2STR(go_dev_addr),
3335                         persistent ? " [PERSISTENT]" : "");
3336         } else {
3337                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3338                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
3339                         "go_dev_addr=" MACSTR "%s",
3340                         wpa_s->ifname, ssid_txt, ssid->frequency,
3341                         ssid->passphrase ? ssid->passphrase : "",
3342                         MAC2STR(go_dev_addr),
3343                         persistent ? " [PERSISTENT]" : "");
3344         }
3345
3346         if (persistent)
3347                 wpas_p2p_store_persistent_group(wpa_s->parent, ssid,
3348                                                 go_dev_addr);
3349 }
3350
3351
3352 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
3353                           u32 interval1, u32 duration2, u32 interval2)
3354 {
3355         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
3356             wpa_s->current_ssid == NULL ||
3357             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
3358                 return -1;
3359
3360         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
3361                                 wpa_s->own_addr, wpa_s->assoc_freq,
3362                                 duration1, interval1, duration2, interval2);
3363 }
3364
3365
3366 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
3367                         unsigned int interval)
3368 {
3369         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
3370 }
3371
3372
3373 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
3374                            u16 reason_code, const u8 *ie, size_t ie_len)
3375 {
3376         if (wpa_s->global->p2p_disabled)
3377                 return;
3378
3379         p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
3380 }
3381
3382
3383 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
3384                              u16 reason_code, const u8 *ie, size_t ie_len)
3385 {
3386         if (wpa_s->global->p2p_disabled)
3387                 return;
3388
3389         p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
3390 }
3391
3392
3393 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
3394 {
3395         struct p2p_data *p2p = wpa_s->global->p2p;
3396
3397         if (p2p == NULL)
3398                 return;
3399
3400         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3401                 return;
3402
3403         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
3404                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
3405
3406         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) {
3407                 u8 pri_dev_type[8];
3408                 if (wpa_s->conf->device_type) {
3409                         if (wps_dev_type_str2bin(wpa_s->conf->device_type,
3410                                                  pri_dev_type) < 0) {
3411                                 wpa_printf(MSG_ERROR, "P2P: Invalid "
3412                                            "device_type");
3413                         } else
3414                                 p2p_set_pri_dev_type(p2p, pri_dev_type);
3415                 }
3416         }
3417
3418         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) {
3419                 u8 sec_dev_type[P2P_SEC_DEVICE_TYPES][8];
3420                 size_t num = 0;
3421                 int i;
3422                 for (i = 0; i < MAX_SEC_DEVICE_TYPES; i++) {
3423                         if (wpa_s->conf->sec_device_type[i] == NULL)
3424                                 continue;
3425                         if (wps_dev_type_str2bin(
3426                                     wpa_s->conf->sec_device_type[i],
3427                                     sec_dev_type[num]) < 0) {
3428                                 wpa_printf(MSG_ERROR, "P2P: Invalid "
3429                                            "sec_device_type");
3430                                 continue;
3431                         }
3432                         num++;
3433                         if (num == P2P_SEC_DEVICE_TYPES)
3434                                 break;
3435                 }
3436                 p2p_set_sec_dev_types(p2p, (void *) sec_dev_type, num);
3437         }
3438
3439         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
3440             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3441                 char country[3];
3442                 country[0] = wpa_s->conf->country[0];
3443                 country[1] = wpa_s->conf->country[1];
3444                 country[2] = 0x04;
3445                 p2p_set_country(p2p, country);
3446         }
3447
3448         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
3449                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
3450                                      wpa_s->conf->p2p_ssid_postfix ?
3451                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
3452                                      0);
3453         }
3454
3455         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
3456                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
3457 }
3458
3459
3460 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
3461                      int duration)
3462 {
3463         if (!wpa_s->ap_iface)
3464                 return -1;
3465         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
3466                                    duration);
3467 }
3468
3469
3470 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
3471 {
3472         if (wpa_s->global->p2p_disabled)
3473                 return -1;
3474         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3475                 return -1;
3476
3477         wpa_s->global->cross_connection = enabled;
3478         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
3479
3480         if (!enabled) {
3481                 struct wpa_supplicant *iface;
3482
3483                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
3484                 {
3485                         if (iface->cross_connect_enabled == 0)
3486                                 continue;
3487
3488                         iface->cross_connect_enabled = 0;
3489                         iface->cross_connect_in_use = 0;
3490                         wpa_msg(iface->parent, MSG_INFO,
3491                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
3492                                 iface->ifname, iface->cross_connect_uplink);
3493                 }
3494         }
3495
3496         return 0;
3497 }
3498
3499
3500 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
3501 {
3502         struct wpa_supplicant *iface;
3503
3504         if (!uplink->global->cross_connection)
3505                 return;
3506
3507         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
3508                 if (!iface->cross_connect_enabled)
3509                         continue;
3510                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
3511                     0)
3512                         continue;
3513                 if (iface->ap_iface == NULL)
3514                         continue;
3515                 if (iface->cross_connect_in_use)
3516                         continue;
3517
3518                 iface->cross_connect_in_use = 1;
3519                 wpa_msg(iface->parent, MSG_INFO,
3520                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
3521                         iface->ifname, iface->cross_connect_uplink);
3522         }
3523 }
3524
3525
3526 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
3527 {
3528         struct wpa_supplicant *iface;
3529
3530         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
3531                 if (!iface->cross_connect_enabled)
3532                         continue;
3533                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
3534                     0)
3535                         continue;
3536                 if (!iface->cross_connect_in_use)
3537                         continue;
3538
3539                 wpa_msg(iface->parent, MSG_INFO,
3540                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
3541                         iface->ifname, iface->cross_connect_uplink);
3542                 iface->cross_connect_in_use = 0;
3543         }
3544 }
3545
3546
3547 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
3548 {
3549         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
3550             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
3551             wpa_s->cross_connect_disallowed)
3552                 wpas_p2p_disable_cross_connect(wpa_s);
3553         else
3554                 wpas_p2p_enable_cross_connect(wpa_s);
3555 }
3556
3557
3558 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
3559 {
3560         wpas_p2p_disable_cross_connect(wpa_s);
3561 }
3562
3563
3564 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
3565 {
3566         struct wpa_supplicant *iface;
3567
3568         if (!wpa_s->global->cross_connection)
3569                 return;
3570
3571         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3572                 if (iface == wpa_s)
3573                         continue;
3574                 if (iface->drv_flags &
3575                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
3576                         continue;
3577                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
3578                         continue;
3579
3580                 wpa_s->cross_connect_enabled = 1;
3581                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
3582                            sizeof(wpa_s->cross_connect_uplink));
3583                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
3584                            "%s to %s whenever uplink is available",
3585                            wpa_s->ifname, wpa_s->cross_connect_uplink);
3586
3587                 if (iface->ap_iface || iface->current_ssid == NULL ||
3588                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
3589                     iface->cross_connect_disallowed ||
3590                     iface->wpa_state != WPA_COMPLETED)
3591                         break;
3592
3593                 wpa_s->cross_connect_in_use = 1;
3594                 wpa_msg(wpa_s->parent, MSG_INFO,
3595                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
3596                         wpa_s->ifname, wpa_s->cross_connect_uplink);
3597                 break;
3598         }
3599 }
3600
3601
3602 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
3603 {
3604         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
3605             !wpa_s->p2p_in_provisioning)
3606                 return 0; /* not P2P client operation */
3607
3608         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
3609                    "session overlap");
3610         wpas_group_formation_completed(wpa_s, 0);
3611         return 1;
3612 }
3613
3614
3615 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
3616 {
3617         struct p2p_channels chan;
3618
3619         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
3620                 return;
3621
3622         os_memset(&chan, 0, sizeof(chan));
3623         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
3624                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
3625                            "channel list");
3626                 return;
3627         }
3628
3629         p2p_update_channel_list(wpa_s->global->p2p, &chan);
3630 }
3631
3632
3633 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
3634 {
3635         struct wpa_global *global = wpa_s->global;
3636         int found = 0;
3637
3638         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
3639
3640         if (wpa_s->pending_interface_name[0] &&
3641             !is_zero_ether_addr(wpa_s->pending_interface_addr))
3642                 found = 1;
3643
3644         wpas_p2p_stop_find(wpa_s);
3645
3646         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3647                 if (wpa_s == global->p2p_group_formation &&
3648                     wpa_s->p2p_in_provisioning) {
3649                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
3650                                    "formation found - cancelling",
3651                                    wpa_s->ifname);
3652                         found = 1;
3653                         wpas_p2p_group_delete(wpa_s);
3654                         break;
3655                 }
3656         }
3657
3658         if (!found) {
3659                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
3660                 return -1;
3661         }
3662
3663         return 0;
3664 }