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