contrib/wpa/src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/defs.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/ieee802_11_common.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "crypto/sha256.h"
  18 #include "crypto/crypto.h"
  19 #include "wps/wps_i.h"
  20 #include "p2p_i.h"
  21 #include "p2p.h"
  22
  23
  24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  27                                      const u8 *sa, const u8 *data, size_t len,
  28                                      int rx_freq);
  29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  30                                       const u8 *sa, const u8 *data,
  31                                       size_t len);
  32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  34
  35
  36 /*
  37  * p2p_scan recovery timeout
  38  *
  39  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  40  * timeout for this to avoid hitting P2P timeout unnecessarily.
  41  */
  42 #define P2P_SCAN_TIMEOUT 35
  43
  44 /**
  45  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  46  * entries will be removed
  47  */
  48 #ifndef P2P_PEER_EXPIRATION_AGE
  49 #define P2P_PEER_EXPIRATION_AGE 60
  50 #endif /* P2P_PEER_EXPIRATION_AGE */
  51
  52
  53 void p2p_expire_peers(struct p2p_data *p2p)
  54 {
  55         struct p2p_device *dev, *n;
  56         struct os_reltime now;
  57         size_t i;
  58
  59         os_get_reltime(&now);
  60         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  61                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  62                         continue;
  63
  64                 if (dev == p2p->go_neg_peer) {
  65                         /*
  66                          * GO Negotiation is in progress with the peer, so
  67                          * don't expire the peer entry until GO Negotiation
  68                          * fails or times out.
  69                          */
  70                         continue;
  71                 }
  72
  73                 if (p2p->cfg->go_connected &&
  74                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  75                                            dev->info.p2p_device_addr)) {
  76                         /*
  77                          * We are connected as a client to a group in which the
  78                          * peer is the GO, so do not expire the peer entry.
  79                          */
  80                         os_get_reltime(&dev->last_seen);
  81                         continue;
  82                 }
  83
  84                 for (i = 0; i < p2p->num_groups; i++) {
  85                         if (p2p_group_is_client_connected(
  86                                     p2p->groups[i], dev->info.p2p_device_addr))
  87                                 break;
  88                 }
  89                 if (i < p2p->num_groups) {
  90                         /*
  91                          * The peer is connected as a client in a group where
  92                          * we are the GO, so do not expire the peer entry.
  93                          */
  94                         os_get_reltime(&dev->last_seen);
  95                         continue;
  96                 }
  97
  98                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  99                         MAC2STR(dev->info.p2p_device_addr));
 100                 dl_list_del(&dev->list);
 101                 p2p_device_free(p2p, dev);
 102         }
 103 }
 104
 105
 106 static const char * p2p_state_txt(int state)
 107 {
 108         switch (state) {
 109         case P2P_IDLE:
 110                 return "IDLE";
 111         case P2P_SEARCH:
 112                 return "SEARCH";
 113         case P2P_CONNECT:
 114                 return "CONNECT";
 115         case P2P_CONNECT_LISTEN:
 116                 return "CONNECT_LISTEN";
 117         case P2P_GO_NEG:
 118                 return "GO_NEG";
 119         case P2P_LISTEN_ONLY:
 120                 return "LISTEN_ONLY";
 121         case P2P_WAIT_PEER_CONNECT:
 122                 return "WAIT_PEER_CONNECT";
 123         case P2P_WAIT_PEER_IDLE:
 124                 return "WAIT_PEER_IDLE";
 125         case P2P_SD_DURING_FIND:
 126                 return "SD_DURING_FIND";
 127         case P2P_PROVISIONING:
 128                 return "PROVISIONING";
 129         case P2P_PD_DURING_FIND:
 130                 return "PD_DURING_FIND";
 131         case P2P_INVITE:
 132                 return "INVITE";
 133         case P2P_INVITE_LISTEN:
 134                 return "INVITE_LISTEN";
 135         default:
 136                 return "?";
 137         }
 138 }
 139
 140
 141 const char * p2p_get_state_txt(struct p2p_data *p2p)
 142 {
 143         return p2p_state_txt(p2p->state);
 144 }
 145
 146
 147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 148 {
 149         return p2p ? p2p->p2ps_adv_list : NULL;
 150 }
 151
 152
 153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 154 {
 155         if (p2p && intended_addr)
 156                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 157 }
 158
 159
 160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 161 {
 162         struct p2p_device *dev = NULL;
 163
 164         if (!addr || !p2p)
 165                 return 0;
 166
 167         dev = p2p_get_device(p2p, addr);
 168         if (dev)
 169                 return dev->wps_prov_info;
 170         else
 171                 return 0;
 172 }
 173
 174
 175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 176 {
 177         struct p2p_device *dev = NULL;
 178
 179         if (!addr || !p2p)
 180                 return;
 181
 182         dev = p2p_get_device(p2p, addr);
 183         if (dev)
 184                 dev->wps_prov_info = 0;
 185 }
 186
 187
 188 void p2p_set_state(struct p2p_data *p2p, int new_state)
 189 {
 190         p2p_dbg(p2p, "State %s -> %s",
 191                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 192         p2p->state = new_state;
 193
 194         if (new_state == P2P_IDLE && p2p->pending_channel) {
 195                 p2p_dbg(p2p, "Apply change in listen channel");
 196                 p2p->cfg->reg_class = p2p->pending_reg_class;
 197                 p2p->cfg->channel = p2p->pending_channel;
 198                 p2p->pending_reg_class = 0;
 199                 p2p->pending_channel = 0;
 200         }
 201 }
 202
 203
 204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 205 {
 206         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 207                 p2p_state_txt(p2p->state), sec, usec);
 208         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 209         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 210 }
 211
 212
 213 void p2p_clear_timeout(struct p2p_data *p2p)
 214 {
 215         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 216         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 217 }
 218
 219
 220 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 221 {
 222         struct p2p_go_neg_results res;
 223         struct p2p_device *peer = p2p->go_neg_peer;
 224
 225         if (!peer)
 226                 return;
 227
 228         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 229         if (p2p->state != P2P_SEARCH) {
 230                 /*
 231                  * Clear timeouts related to GO Negotiation if no new p2p_find
 232                  * has been started.
 233                  */
 234                 p2p_clear_timeout(p2p);
 235                 p2p_set_state(p2p, P2P_IDLE);
 236         }
 237
 238         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 239         peer->wps_method = WPS_NOT_READY;
 240         peer->oob_pw_id = 0;
 241         wpabuf_free(peer->go_neg_conf);
 242         peer->go_neg_conf = NULL;
 243         p2p->go_neg_peer = NULL;
 244
 245         os_memset(&res, 0, sizeof(res));
 246         res.status = status;
 247         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 248         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 249         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 250 }
 251
 252
 253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 254 {
 255         unsigned int r, tu;
 256         int freq;
 257         struct wpabuf *ies;
 258
 259         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 260                 p2p_state_txt(p2p->state));
 261
 262         if (p2p->pending_listen_freq) {
 263                 /* We have a pending p2p_listen request */
 264                 p2p_dbg(p2p, "p2p_listen command pending already");
 265                 return;
 266         }
 267
 268         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 269         if (freq < 0) {
 270                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 271                 return;
 272         }
 273
 274         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 275                 r = 0;
 276         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 277               p2p->min_disc_int) * 100;
 278         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 279                 tu = p2p->max_disc_tu;
 280         if (!dev_disc && tu < 100)
 281                 tu = 100; /* Need to wait in non-device discovery use cases */
 282         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 283                 tu = p2p->cfg->max_listen * 1000 / 1024;
 284
 285         if (tu == 0) {
 286                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 287                 p2p_set_timeout(p2p, 0, 0);
 288                 return;
 289         }
 290
 291         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 292         if (ies == NULL)
 293                 return;
 294
 295         p2p->pending_listen_freq = freq;
 296         p2p->pending_listen_sec = 0;
 297         p2p->pending_listen_usec = 1024 * tu;
 298
 299         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 300                     ies) < 0) {
 301                 p2p_dbg(p2p, "Failed to start listen mode");
 302                 p2p->pending_listen_freq = 0;
 303         }
 304         wpabuf_free(ies);
 305 }
 306
 307
 308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 309 {
 310         int freq;
 311         struct wpabuf *ies;
 312
 313         p2p_dbg(p2p, "Going to listen(only) state");
 314
 315         if (p2p->pending_listen_freq) {
 316                 /* We have a pending p2p_listen request */
 317                 p2p_dbg(p2p, "p2p_listen command pending already");
 318                 return -1;
 319         }
 320
 321         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 322         if (freq < 0) {
 323                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 324                 return -1;
 325         }
 326
 327         p2p->pending_listen_sec = timeout / 1000;
 328         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 329
 330         if (p2p->p2p_scan_running) {
 331                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 332                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 333                         return 0;
 334                 }
 335                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 336                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 337                 return 0;
 338         }
 339
 340         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
 341         if (ies == NULL)
 342                 return -1;
 343
 344         p2p->pending_listen_freq = freq;
 345
 346         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 347                 p2p_dbg(p2p, "Failed to start listen mode");
 348                 p2p->pending_listen_freq = 0;
 349                 wpabuf_free(ies);
 350                 return -1;
 351         }
 352         wpabuf_free(ies);
 353
 354         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 355
 356         return 0;
 357 }
 358
 359
 360 static void p2p_device_clear_reported(struct p2p_data *p2p)
 361 {
 362         struct p2p_device *dev;
 363         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 364                 dev->flags &= ~P2P_DEV_REPORTED;
 365                 dev->sd_reqs = 0;
 366         }
 367 }
 368
 369
 370 /**
 371  * p2p_get_device - Fetch a peer entry
 372  * @p2p: P2P module context from p2p_init()
 373  * @addr: P2P Device Address of the peer
 374  * Returns: Pointer to the device entry or %NULL if not found
 375  */
 376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 377 {
 378         struct p2p_device *dev;
 379         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 380                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 381                         return dev;
 382         }
 383         return NULL;
 384 }
 385
 386
 387 /**
 388  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 389  * @p2p: P2P module context from p2p_init()
 390  * @addr: P2P Interface Address of the peer
 391  * Returns: Pointer to the device entry or %NULL if not found
 392  */
 393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 394                                              const u8 *addr)
 395 {
 396         struct p2p_device *dev;
 397         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 398                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 399                         return dev;
 400         }
 401         return NULL;
 402 }
 403
 404
 405 /**
 406  * p2p_create_device - Create a peer entry
 407  * @p2p: P2P module context from p2p_init()
 408  * @addr: P2P Device Address of the peer
 409  * Returns: Pointer to the device entry or %NULL on failure
 410  *
 411  * If there is already an entry for the peer, it will be returned instead of
 412  * creating a new one.
 413  */
 414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 415                                              const u8 *addr)
 416 {
 417         struct p2p_device *dev, *oldest = NULL;
 418         size_t count = 0;
 419
 420         dev = p2p_get_device(p2p, addr);
 421         if (dev)
 422                 return dev;
 423
 424         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 425                 count++;
 426                 if (oldest == NULL ||
 427                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 428                         oldest = dev;
 429         }
 430         if (count + 1 > p2p->cfg->max_peers && oldest) {
 431                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 432                 dl_list_del(&oldest->list);
 433                 p2p_device_free(p2p, oldest);
 434         }
 435
 436         dev = os_zalloc(sizeof(*dev));
 437         if (dev == NULL)
 438                 return NULL;
 439         dl_list_add(&p2p->devices, &dev->list);
 440         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 441
 442         return dev;
 443 }
 444
 445
 446 static void p2p_copy_client_info(struct p2p_device *dev,
 447                                  struct p2p_client_info *cli)
 448 {
 449         p2p_copy_filter_devname(dev->info.device_name,
 450                                 sizeof(dev->info.device_name),
 451                                 cli->dev_name, cli->dev_name_len);
 452         dev->info.dev_capab = cli->dev_capab;
 453         dev->info.config_methods = cli->config_methods;
 454         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 455         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 456         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 457                   dev->info.wps_sec_dev_type_list_len);
 458 }
 459
 460
 461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 462                                  const u8 *go_interface_addr, int freq,
 463                                  const u8 *gi, size_t gi_len,
 464                                  struct os_reltime *rx_time)
 465 {
 466         struct p2p_group_info info;
 467         size_t c;
 468         struct p2p_device *dev;
 469
 470         if (gi == NULL)
 471                 return 0;
 472
 473         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 474                 return -1;
 475
 476         /*
 477          * Clear old data for this group; if the devices are still in the
 478          * group, the information will be restored in the loop following this.
 479          */
 480         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 481                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 482                               ETH_ALEN) == 0) {
 483                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 484                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 485                 }
 486         }
 487
 488         for (c = 0; c < info.num_clients; c++) {
 489                 struct p2p_client_info *cli = &info.client[c];
 490                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 491                               ETH_ALEN) == 0)
 492                         continue; /* ignore our own entry */
 493                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 494                 if (dev) {
 495                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 496                                           P2P_DEV_PROBE_REQ_ONLY)) {
 497                                 /*
 498                                  * Update information since we have not
 499                                  * received this directly from the client.
 500                                  */
 501                                 p2p_copy_client_info(dev, cli);
 502                         } else {
 503                                 /*
 504                                  * Need to update P2P Client Discoverability
 505                                  * flag since it is valid only in P2P Group
 506                                  * Info attribute.
 507                                  */
 508                                 dev->info.dev_capab &=
 509                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 510                                 dev->info.dev_capab |=
 511                                         cli->dev_capab &
 512                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 513                         }
 514                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 515                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 516                         }
 517                 } else {
 518                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 519                         if (dev == NULL)
 520                                 continue;
 521                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 522                         p2p_copy_client_info(dev, cli);
 523                         dev->oper_freq = freq;
 524                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 525                                             dev->info.p2p_device_addr,
 526                                             &dev->info, 1);
 527                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 528                 }
 529
 530                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 531                           ETH_ALEN);
 532                 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 533                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 534                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 535                           ETH_ALEN);
 536                 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
 537         }
 538
 539         return 0;
 540 }
 541
 542
 543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 544                               int probe_req, const struct p2p_message *msg)
 545 {
 546         os_memcpy(dev->info.device_name, msg->device_name,
 547                   sizeof(dev->info.device_name));
 548
 549         if (msg->manufacturer &&
 550             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 551                 os_memset(dev->info.manufacturer, 0,
 552                           sizeof(dev->info.manufacturer));
 553                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 554                           msg->manufacturer_len);
 555         }
 556
 557         if (msg->model_name &&
 558             msg->model_name_len < sizeof(dev->info.model_name)) {
 559                 os_memset(dev->info.model_name, 0,
 560                           sizeof(dev->info.model_name));
 561                 os_memcpy(dev->info.model_name, msg->model_name,
 562                           msg->model_name_len);
 563         }
 564
 565         if (msg->model_number &&
 566             msg->model_number_len < sizeof(dev->info.model_number)) {
 567                 os_memset(dev->info.model_number, 0,
 568                           sizeof(dev->info.model_number));
 569                 os_memcpy(dev->info.model_number, msg->model_number,
 570                           msg->model_number_len);
 571         }
 572
 573         if (msg->serial_number &&
 574             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 575                 os_memset(dev->info.serial_number, 0,
 576                           sizeof(dev->info.serial_number));
 577                 os_memcpy(dev->info.serial_number, msg->serial_number,
 578                           msg->serial_number_len);
 579         }
 580
 581         if (msg->pri_dev_type)
 582                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 583                           sizeof(dev->info.pri_dev_type));
 584         else if (msg->wps_pri_dev_type)
 585                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 586                           sizeof(dev->info.pri_dev_type));
 587
 588         if (msg->wps_sec_dev_type_list) {
 589                 os_memcpy(dev->info.wps_sec_dev_type_list,
 590                           msg->wps_sec_dev_type_list,
 591                           msg->wps_sec_dev_type_list_len);
 592                 dev->info.wps_sec_dev_type_list_len =
 593                         msg->wps_sec_dev_type_list_len;
 594         }
 595
 596         if (msg->capability) {
 597                 /*
 598                  * P2P Client Discoverability bit is reserved in all frames
 599                  * that use this function, so do not change its value here.
 600                  */
 601                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 602                 dev->info.dev_capab |= msg->capability[0] &
 603                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 604                 dev->info.group_capab = msg->capability[1];
 605         }
 606
 607         if (msg->ext_listen_timing) {
 608                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 609                 dev->ext_listen_interval =
 610                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 611         }
 612
 613         if (!probe_req) {
 614                 u16 new_config_methods;
 615                 new_config_methods = msg->config_methods ?
 616                         msg->config_methods : msg->wps_config_methods;
 617                 if (new_config_methods &&
 618                     dev->info.config_methods != new_config_methods) {
 619                         p2p_dbg(p2p, "Update peer " MACSTR
 620                                 " config_methods 0x%x -> 0x%x",
 621                                 MAC2STR(dev->info.p2p_device_addr),
 622                                 dev->info.config_methods,
 623                                 new_config_methods);
 624                         dev->info.config_methods = new_config_methods;
 625                 }
 626         }
 627 }
 628
 629
 630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 631                                          size_t ies_len)
 632 {
 633         const u8 *pos, *end;
 634         u8 id, len;
 635
 636         wpabuf_free(dev->info.vendor_elems);
 637         dev->info.vendor_elems = NULL;
 638
 639         end = ies + ies_len;
 640
 641         for (pos = ies; end - pos > 1; pos += len) {
 642                 id = *pos++;
 643                 len = *pos++;
 644
 645                 if (len > end - pos)
 646                         break;
 647
 648                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 649                         continue;
 650
 651                 if (len >= 4) {
 652                         u32 type = WPA_GET_BE32(pos);
 653
 654                         if (type == WPA_IE_VENDOR_TYPE ||
 655                             type == WMM_IE_VENDOR_TYPE ||
 656                             type == WPS_IE_VENDOR_TYPE ||
 657                             type == P2P_IE_VENDOR_TYPE ||
 658                             type == WFD_IE_VENDOR_TYPE)
 659                                 continue;
 660                 }
 661
 662                 /* Unknown vendor element - make raw IE data available */
 663                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 664                         break;
 665                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 666         }
 667 }
 668
 669
 670 static int p2p_compare_wfd_info(struct p2p_device *dev,
 671                               const struct p2p_message *msg)
 672 {
 673         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 674                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 675                         return 1;
 676
 677                 return os_memcmp(dev->info.wfd_subelems->buf,
 678                                  msg->wfd_subelems->buf,
 679                                  dev->info.wfd_subelems->used);
 680         }
 681         if (dev->info.wfd_subelems || msg->wfd_subelems)
 682                 return 1;
 683
 684         return 0;
 685 }
 686
 687
 688 /**
 689  * p2p_add_device - Add peer entries based on scan results or P2P frames
 690  * @p2p: P2P module context from p2p_init()
 691  * @addr: Source address of Beacon or Probe Response frame (may be either
 692  *      P2P Device Address or P2P Interface Address)
 693  * @level: Signal level (signal strength of the received frame from the peer)
 694  * @freq: Frequency on which the Beacon or Probe Response frame was received
 695  * @rx_time: Time when the result was received
 696  * @ies: IEs from the Beacon or Probe Response frame
 697  * @ies_len: Length of ies buffer in octets
 698  * @scan_res: Whether this was based on scan results
 699  * Returns: 0 on success, -1 on failure
 700  *
 701  * If the scan result is for a GO, the clients in the group will also be added
 702  * to the peer table. This function can also be used with some other frames
 703  * like Provision Discovery Request that contains P2P Capability and P2P Device
 704  * Info attributes.
 705  */
 706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 707                    struct os_reltime *rx_time, int level, const u8 *ies,
 708                    size_t ies_len, int scan_res)
 709 {
 710         struct p2p_device *dev;
 711         struct p2p_message msg;
 712         const u8 *p2p_dev_addr;
 713         int wfd_changed;
 714         int dev_name_changed;
 715         int i;
 716         struct os_reltime time_now;
 717
 718         os_memset(&msg, 0, sizeof(msg));
 719         if (p2p_parse_ies(ies, ies_len, &msg)) {
 720                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 721                 p2p_parse_free(&msg);
 722                 return -1;
 723         }
 724
 725         if (msg.p2p_device_addr)
 726                 p2p_dev_addr = msg.p2p_device_addr;
 727         else if (msg.device_id)
 728                 p2p_dev_addr = msg.device_id;
 729         else {
 730                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 731                 p2p_parse_free(&msg);
 732                 return -1;
 733         }
 734
 735         if (!is_zero_ether_addr(p2p->peer_filter) &&
 736             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 737                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 738                         " due to peer filter", MAC2STR(p2p_dev_addr));
 739                 p2p_parse_free(&msg);
 740                 return 0;
 741         }
 742
 743         dev = p2p_create_device(p2p, p2p_dev_addr);
 744         if (dev == NULL) {
 745                 p2p_parse_free(&msg);
 746                 return -1;
 747         }
 748
 749         if (rx_time == NULL) {
 750                 os_get_reltime(&time_now);
 751                 rx_time = &time_now;
 752         }
 753
 754         /*
 755          * Update the device entry only if the new peer
 756          * entry is newer than the one previously stored, or if
 757          * the device was previously seen as a P2P Client in a group
 758          * and the new entry isn't older than a threshold.
 759          */
 760         if (dev->last_seen.sec > 0 &&
 761             os_reltime_before(rx_time, &dev->last_seen) &&
 762             (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
 763              os_reltime_expired(&dev->last_seen, rx_time,
 764                                 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
 765                 p2p_dbg(p2p,
 766                         "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
 767                         (unsigned int) rx_time->sec,
 768                         (unsigned int) rx_time->usec,
 769                         (unsigned int) dev->last_seen.sec,
 770                         (unsigned int) dev->last_seen.usec,
 771                         dev->flags);
 772                 p2p_parse_free(&msg);
 773                 return -1;
 774         }
 775
 776         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 777
 778         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
 779                         P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
 780
 781         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 782                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 783         if (msg.ssid &&
 784             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 785             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 786              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 787              != 0)) {
 788                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 789                 dev->oper_ssid_len = msg.ssid[1];
 790         }
 791
 792         wpabuf_free(dev->info.p2ps_instance);
 793         dev->info.p2ps_instance = NULL;
 794         if (msg.adv_service_instance && msg.adv_service_instance_len)
 795                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 796                         msg.adv_service_instance, msg.adv_service_instance_len);
 797
 798         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 799             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 800                 int ds_freq;
 801                 if (*msg.ds_params == 14)
 802                         ds_freq = 2484;
 803                 else
 804                         ds_freq = 2407 + *msg.ds_params * 5;
 805                 if (freq != ds_freq) {
 806                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 807                                 freq, ds_freq);
 808                         freq = ds_freq;
 809                 }
 810         }
 811
 812         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 813                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 814                         MACSTR " %d -> %d MHz (DS param %d)",
 815                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 816                         freq, msg.ds_params ? *msg.ds_params : -1);
 817         }
 818         if (scan_res) {
 819                 dev->listen_freq = freq;
 820                 if (msg.group_info)
 821                         dev->oper_freq = freq;
 822         }
 823         dev->info.level = level;
 824
 825         dev_name_changed = os_strncmp(dev->info.device_name, msg.device_name,
 826                                       WPS_DEV_NAME_MAX_LEN) != 0;
 827
 828         p2p_copy_wps_info(p2p, dev, 0, &msg);
 829
 830         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 831                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 832                 dev->info.wps_vendor_ext[i] = NULL;
 833         }
 834
 835         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 836                 if (msg.wps_vendor_ext[i] == NULL)
 837                         break;
 838                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 839                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 840                 if (dev->info.wps_vendor_ext[i] == NULL)
 841                         break;
 842         }
 843
 844         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 845
 846         if (wfd_changed) {
 847                 wpabuf_free(dev->info.wfd_subelems);
 848                 if (msg.wfd_subelems)
 849                         dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 850                 else
 851                         dev->info.wfd_subelems = NULL;
 852         }
 853
 854         if (scan_res) {
 855                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 856                                       msg.group_info, msg.group_info_len,
 857                                       rx_time);
 858         }
 859
 860         p2p_parse_free(&msg);
 861
 862         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 863
 864         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 865             !dev_name_changed &&
 866             (!msg.adv_service_instance ||
 867              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 868                 return 0;
 869
 870         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 871                 freq, (unsigned int) rx_time->sec,
 872                 (unsigned int) rx_time->usec);
 873         if (dev->flags & P2P_DEV_USER_REJECTED) {
 874                 p2p_dbg(p2p, "Do not report rejected device");
 875                 return 0;
 876         }
 877
 878         if (dev->info.config_methods == 0 &&
 879             (freq == 2412 || freq == 2437 || freq == 2462)) {
 880                 /*
 881                  * If we have only seen a Beacon frame from a GO, we do not yet
 882                  * know what WPS config methods it supports. Since some
 883                  * applications use config_methods value from P2P-DEVICE-FOUND
 884                  * events, postpone reporting this peer until we've fully
 885                  * discovered its capabilities.
 886                  *
 887                  * At least for now, do this only if the peer was detected on
 888                  * one of the social channels since that peer can be easily be
 889                  * found again and there are no limitations of having to use
 890                  * passive scan on this channels, so this can be done through
 891                  * Probe Response frame that includes the config_methods
 892                  * information.
 893                  */
 894                 p2p_dbg(p2p, "Do not report peer " MACSTR
 895                         " with unknown config methods", MAC2STR(addr));
 896                 return 0;
 897         }
 898
 899         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 900                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 901         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 902
 903         if (msg.adv_service_instance)
 904                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 905
 906         return 0;
 907 }
 908
 909
 910 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 911 {
 912         int i;
 913
 914         if (p2p->go_neg_peer == dev) {
 915                 /*
 916                  * If GO Negotiation is in progress, report that it has failed.
 917                  */
 918                 p2p_go_neg_failed(p2p, -1);
 919         }
 920         if (p2p->invite_peer == dev)
 921                 p2p->invite_peer = NULL;
 922         if (p2p->sd_peer == dev)
 923                 p2p->sd_peer = NULL;
 924         if (p2p->pending_client_disc_go == dev)
 925                 p2p->pending_client_disc_go = NULL;
 926
 927         /* dev_lost() device, but only if it was previously dev_found() */
 928         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 929                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 930                                    dev->info.p2p_device_addr);
 931
 932         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 933                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 934                 dev->info.wps_vendor_ext[i] = NULL;
 935         }
 936
 937         wpabuf_free(dev->info.wfd_subelems);
 938         wpabuf_free(dev->info.vendor_elems);
 939         wpabuf_free(dev->go_neg_conf);
 940         wpabuf_free(dev->info.p2ps_instance);
 941
 942         os_free(dev);
 943 }
 944
 945
 946 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 947 {
 948         struct p2p_channels *c;
 949         struct p2p_reg_class *cla;
 950         size_t cl, ch;
 951         int found = 0;
 952         u8 reg_class;
 953         u8 channel;
 954         int freq;
 955
 956         c = &p2p->cfg->channels;
 957         for (cl = 0; cl < c->reg_classes; cl++) {
 958                 cla = &c->reg_class[cl];
 959                 if (cla->reg_class != p2p->last_prog_scan_class)
 960                         continue;
 961                 for (ch = 0; ch < cla->channels; ch++) {
 962                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 963                                 found = 1;
 964                                 break;
 965                         }
 966                 }
 967                 if (found)
 968                         break;
 969         }
 970
 971         if (!found) {
 972                 /* Start from beginning */
 973                 reg_class = c->reg_class[0].reg_class;
 974                 channel = c->reg_class[0].channel[0];
 975         } else {
 976                 /* Pick the next channel */
 977                 ch++;
 978                 if (ch == cla->channels) {
 979                         cl++;
 980                         if (cl == c->reg_classes)
 981                                 cl = 0;
 982                         ch = 0;
 983                 }
 984                 reg_class = c->reg_class[cl].reg_class;
 985                 channel = c->reg_class[cl].channel[ch];
 986         }
 987
 988         freq = p2p_channel_to_freq(reg_class, channel);
 989         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 990                 reg_class, channel, freq);
 991         p2p->last_prog_scan_class = reg_class;
 992         p2p->last_prog_scan_chan = channel;
 993
 994         if (freq == 2412 || freq == 2437 || freq == 2462)
 995                 return 0; /* No need to add social channels */
 996         return freq;
 997 }
 998
 999
1000 static void p2p_search(struct p2p_data *p2p)
1001 {
1002         int freq = 0;
1003         enum p2p_scan_type type;
1004         u16 pw_id = DEV_PW_DEFAULT;
1005         int res;
1006
1007         if (p2p->drv_in_listen) {
1008                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
1009                 return;
1010         }
1011         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1012
1013         if (p2p->find_pending_full &&
1014             (p2p->find_type == P2P_FIND_PROGRESSIVE ||
1015              p2p->find_type == P2P_FIND_START_WITH_FULL)) {
1016                 type = P2P_SCAN_FULL;
1017                 p2p_dbg(p2p, "Starting search (pending full scan)");
1018                 p2p->find_pending_full = 0;
1019         } else if ((p2p->find_type == P2P_FIND_PROGRESSIVE &&
1020             (freq = p2p_get_next_prog_freq(p2p)) > 0) ||
1021             (p2p->find_type == P2P_FIND_START_WITH_FULL &&
1022              (freq = p2p->find_specified_freq) > 0)) {
1023                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1024                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1025         } else {
1026                 type = P2P_SCAN_SOCIAL;
1027                 p2p_dbg(p2p, "Starting search");
1028         }
1029
1030         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1031                                  p2p->num_req_dev_types, p2p->req_dev_types,
1032                                  p2p->find_dev_id, pw_id);
1033         if (res < 0) {
1034                 p2p_dbg(p2p, "Scan request schedule failed");
1035                 p2p_continue_find(p2p);
1036         }
1037 }
1038
1039
1040 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1041 {
1042         struct p2p_data *p2p = eloop_ctx;
1043         p2p_dbg(p2p, "Find timeout -> stop");
1044         p2p_stop_find(p2p);
1045 }
1046
1047
1048 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1049 {
1050         if (status != 0) {
1051                 p2p_dbg(p2p, "Scan request failed");
1052                 /* Do continue find even for the first p2p_find_scan */
1053                 p2p_continue_find(p2p);
1054         } else {
1055                 p2p_dbg(p2p, "Running p2p_scan");
1056                 p2p->p2p_scan_running = 1;
1057                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1058                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1059                                        p2p, NULL);
1060         }
1061 }
1062
1063
1064 static int p2p_run_after_scan(struct p2p_data *p2p)
1065 {
1066         struct p2p_device *dev;
1067         enum p2p_after_scan op;
1068
1069         op = p2p->start_after_scan;
1070         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1071         switch (op) {
1072         case P2P_AFTER_SCAN_NOTHING:
1073                 break;
1074         case P2P_AFTER_SCAN_LISTEN:
1075                 p2p_dbg(p2p, "Start previously requested Listen state");
1076                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1077                            p2p->pending_listen_usec / 1000);
1078                 return 1;
1079         case P2P_AFTER_SCAN_CONNECT:
1080                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1081                         MAC2STR(p2p->after_scan_peer));
1082                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1083                 if (dev == NULL) {
1084                         p2p_dbg(p2p, "Peer not known anymore");
1085                         break;
1086                 }
1087                 p2p_connect_send(p2p, dev);
1088                 return 1;
1089         }
1090
1091         return 0;
1092 }
1093
1094
1095 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1096 {
1097         struct p2p_data *p2p = eloop_ctx;
1098         int running;
1099         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1100         running = p2p->p2p_scan_running;
1101         /* Make sure we recover from missed scan results callback */
1102         p2p->p2p_scan_running = 0;
1103
1104         if (running)
1105                 p2p_run_after_scan(p2p);
1106 }
1107
1108
1109 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1110 {
1111         p2p->num_req_dev_types = 0;
1112         os_free(p2p->req_dev_types);
1113         p2p->req_dev_types = NULL;
1114 }
1115
1116
1117 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1118 {
1119         u8 buf[SHA256_MAC_LEN];
1120         char str_buf[256];
1121         const u8 *adv_array;
1122         size_t i, adv_len;
1123
1124         if (!str || !hash)
1125                 return 0;
1126
1127         if (!str[0]) {
1128                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1129                 return 1;
1130         }
1131
1132         adv_array = (u8 *) str_buf;
1133         adv_len = os_strlen(str);
1134         if (adv_len >= sizeof(str_buf))
1135                 return 0;
1136
1137         for (i = 0; i < adv_len; i++) {
1138                 if (str[i] >= 'A' && str[i] <= 'Z')
1139                         str_buf[i] = str[i] - 'A' + 'a';
1140                 else
1141                         str_buf[i] = str[i];
1142         }
1143
1144         if (sha256_vector(1, &adv_array, &adv_len, buf))
1145                 return 0;
1146
1147         os_memcpy(hash, buf, P2PS_HASH_LEN);
1148         return 1;
1149 }
1150
1151
1152 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1153              enum p2p_discovery_type type,
1154              unsigned int num_req_dev_types, const u8 *req_dev_types,
1155              const u8 *dev_id, unsigned int search_delay,
1156              u8 seek_count, const char **seek, int freq)
1157 {
1158         int res;
1159         struct os_reltime start;
1160
1161         p2p_dbg(p2p, "Starting find (type=%d)", type);
1162         if (p2p->p2p_scan_running) {
1163                 p2p_dbg(p2p, "p2p_scan is already running");
1164         }
1165
1166         p2p_free_req_dev_types(p2p);
1167         if (req_dev_types && num_req_dev_types) {
1168                 p2p->req_dev_types = os_memdup(req_dev_types,
1169                                                num_req_dev_types *
1170                                                WPS_DEV_TYPE_LEN);
1171                 if (p2p->req_dev_types == NULL)
1172                         return -1;
1173                 p2p->num_req_dev_types = num_req_dev_types;
1174         }
1175
1176         if (dev_id) {
1177                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1178                 p2p->find_dev_id = p2p->find_dev_id_buf;
1179         } else
1180                 p2p->find_dev_id = NULL;
1181
1182         if (seek_count == 0 || !seek) {
1183                 /* Not an ASP search */
1184                 p2p->p2ps_seek = 0;
1185         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1186                 /*
1187                  * An empty seek string means no hash values, but still an ASP
1188                  * search.
1189                  */
1190                 p2p_dbg(p2p, "ASP search");
1191                 p2p->p2ps_seek_count = 0;
1192                 p2p->p2ps_seek = 1;
1193         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1194                 u8 buf[P2PS_HASH_LEN];
1195                 int i, count = 0;
1196
1197                 for (i = 0; i < seek_count; i++) {
1198                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1199                                 continue;
1200
1201                         p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1202                                 seek[i], MAC2STR(buf));
1203                         os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1204                                   buf, P2PS_HASH_LEN);
1205                         count++;
1206                 }
1207
1208                 p2p->p2ps_seek_count = count;
1209                 p2p->p2ps_seek = 1;
1210         } else {
1211                 p2p->p2ps_seek_count = 0;
1212                 p2p->p2ps_seek = 1;
1213         }
1214
1215         /* Special case to perform wildcard search */
1216         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1217                 p2p->p2ps_seek_count = 1;
1218                 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1219                           P2PS_HASH_LEN);
1220         }
1221
1222         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1223         p2p_clear_timeout(p2p);
1224         if (p2p->pending_listen_freq) {
1225                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1226                 p2p->pending_listen_freq = 0;
1227         }
1228         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1229         p2p->find_pending_full = 0;
1230         p2p->find_type = type;
1231         if (freq != 2412 && freq != 2437 && freq != 2462 && freq != 60480)
1232                 p2p->find_specified_freq = freq;
1233         else
1234                 p2p->find_specified_freq = 0;
1235         p2p_device_clear_reported(p2p);
1236         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1237         p2p_set_state(p2p, P2P_SEARCH);
1238         p2p->search_delay = search_delay;
1239         p2p->in_search_delay = 0;
1240         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1241         p2p->last_p2p_find_timeout = timeout;
1242         if (timeout)
1243                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1244                                        p2p, NULL);
1245         os_get_reltime(&start);
1246         switch (type) {
1247         case P2P_FIND_START_WITH_FULL:
1248                 if (freq > 0) {
1249                         /*
1250                          * Start with the specified channel and then move to
1251                          * scans for social channels and this specific channel.
1252                          */
1253                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1254                                                  P2P_SCAN_SPECIFIC, freq,
1255                                                  p2p->num_req_dev_types,
1256                                                  p2p->req_dev_types, dev_id,
1257                                                  DEV_PW_DEFAULT);
1258                         break;
1259                 }
1260                 /* fall through */
1261         case P2P_FIND_PROGRESSIVE:
1262                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1263                                          p2p->num_req_dev_types,
1264                                          p2p->req_dev_types, dev_id,
1265                                          DEV_PW_DEFAULT);
1266                 break;
1267         case P2P_FIND_ONLY_SOCIAL:
1268                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1269                                          p2p->num_req_dev_types,
1270                                          p2p->req_dev_types, dev_id,
1271                                          DEV_PW_DEFAULT);
1272                 break;
1273         default:
1274                 return -1;
1275         }
1276
1277         if (!res)
1278                 p2p->find_start = start;
1279
1280         if (res != 0 && p2p->p2p_scan_running) {
1281                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1282                 /* wait for the previous p2p_scan to complete */
1283                 if (type == P2P_FIND_PROGRESSIVE ||
1284                     (type == P2P_FIND_START_WITH_FULL && freq == 0))
1285                         p2p->find_pending_full = 1;
1286                 res = 0; /* do not report failure */
1287         } else if (res != 0) {
1288                 p2p_dbg(p2p, "Failed to start p2p_scan");
1289                 p2p_set_state(p2p, P2P_IDLE);
1290                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1291         }
1292
1293         return res;
1294 }
1295
1296
1297 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1298 {
1299         p2p_dbg(p2p, "Stopping find");
1300         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1301         p2p_clear_timeout(p2p);
1302         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1303                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1304
1305         p2p->p2ps_seek_count = 0;
1306
1307         p2p_set_state(p2p, P2P_IDLE);
1308         p2p_free_req_dev_types(p2p);
1309         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1310         if (p2p->go_neg_peer)
1311                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1312         p2p->go_neg_peer = NULL;
1313         p2p->sd_peer = NULL;
1314         p2p->invite_peer = NULL;
1315         p2p_stop_listen_for_freq(p2p, freq);
1316         p2p->send_action_in_progress = 0;
1317 }
1318
1319
1320 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1321 {
1322         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1323                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1324                 return;
1325         }
1326         if (p2p->in_listen) {
1327                 p2p->in_listen = 0;
1328                 p2p_clear_timeout(p2p);
1329         }
1330         if (p2p->drv_in_listen) {
1331                 /*
1332                  * The driver may not deliver callback to p2p_listen_end()
1333                  * when the operation gets canceled, so clear the internal
1334                  * variable that is tracking driver state.
1335                  */
1336                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1337                 p2p->drv_in_listen = 0;
1338         }
1339         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1340 }
1341
1342
1343 void p2p_stop_listen(struct p2p_data *p2p)
1344 {
1345         if (p2p->state != P2P_LISTEN_ONLY) {
1346                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1347                 return;
1348         }
1349
1350         p2p_stop_listen_for_freq(p2p, 0);
1351         p2p_set_state(p2p, P2P_IDLE);
1352 }
1353
1354
1355 void p2p_stop_find(struct p2p_data *p2p)
1356 {
1357         p2p->pending_listen_freq = 0;
1358         p2p_stop_find_for_freq(p2p, 0);
1359 }
1360
1361
1362 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1363                                     unsigned int force_freq,
1364                                     unsigned int pref_freq, int go)
1365 {
1366         u8 op_class, op_channel;
1367         unsigned int freq = force_freq ? force_freq : pref_freq;
1368
1369         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1370                 force_freq, pref_freq, go);
1371         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1372                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1373                 return -1;
1374         }
1375
1376         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1377             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1378                                           op_channel))) {
1379                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1380                         freq, op_class, op_channel);
1381                 return -1;
1382         }
1383
1384         p2p->op_reg_class = op_class;
1385         p2p->op_channel = op_channel;
1386
1387         if (force_freq) {
1388                 p2p->channels.reg_classes = 1;
1389                 p2p->channels.reg_class[0].channels = 1;
1390                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1391                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1392         } else {
1393                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1394                           sizeof(struct p2p_channels));
1395         }
1396
1397         return 0;
1398 }
1399
1400
1401 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1402 {
1403         u8 op_class, op_channel;
1404         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1405         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1406         const int op_classes_vht[] = { 128, 0 };
1407
1408         p2p_dbg(p2p, "Prepare channel best");
1409
1410         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1411             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1412             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1413             == 0) {
1414                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1415                 p2p->op_reg_class = op_class;
1416                 p2p->op_channel = op_channel;
1417         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1418                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1419                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1420                    == 0) {
1421                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1422                 p2p->op_reg_class = op_class;
1423                 p2p->op_channel = op_channel;
1424         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1425                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1426                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1427                                        &op_channel) == 0) {
1428                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1429                 p2p->op_reg_class = op_class;
1430                 p2p->op_channel = op_channel;
1431         } else if (p2p->cfg->num_pref_chan > 0 &&
1432                    p2p_channels_includes(&p2p->cfg->channels,
1433                                          p2p->cfg->pref_chan[0].op_class,
1434                                          p2p->cfg->pref_chan[0].chan)) {
1435                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1436                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1437                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1438         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1439                                       &p2p->op_reg_class, &p2p->op_channel) ==
1440                    0) {
1441                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1442                         p2p->op_reg_class, p2p->op_channel);
1443         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1444                                       &p2p->op_reg_class, &p2p->op_channel) ==
1445                    0) {
1446                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1447                         p2p->op_reg_class, p2p->op_channel);
1448         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1449                                       &p2p->op_reg_class, &p2p->op_channel) ==
1450                    0) {
1451                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1452                         p2p->op_reg_class, p2p->op_channel);
1453         } else if (p2p_channels_includes(&p2p->cfg->channels,
1454                                          p2p->cfg->op_reg_class,
1455                                          p2p->cfg->op_channel)) {
1456                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1457                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1458                 p2p->op_channel = p2p->cfg->op_channel;
1459         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1460                                              &p2p->op_reg_class,
1461                                              &p2p->op_channel,
1462                                              NULL, NULL) == 0) {
1463                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1464                         p2p->op_reg_class, p2p->op_channel);
1465         } else {
1466                 /* Select any random available channel from the first available
1467                  * operating class */
1468                 p2p_channel_select(&p2p->cfg->channels, NULL,
1469                                    &p2p->op_reg_class,
1470                                    &p2p->op_channel);
1471                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1472                         p2p->op_channel, p2p->op_reg_class);
1473         }
1474
1475         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1476                   sizeof(struct p2p_channels));
1477 }
1478
1479
1480 /**
1481  * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1482  * @p2p: P2P module context from p2p_init()
1483  * @dev: Selected peer device
1484  * @force_freq: Forced frequency in MHz or 0 if not forced
1485  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1486  * @go: Whether the local end will be forced to be GO
1487  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1488  *
1489  * This function is used to do initial operating channel selection for GO
1490  * Negotiation prior to having received peer information or for P2PS PD
1491  * signalling. The selected channel may be further optimized in
1492  * p2p_reselect_channel() once the peer information is available.
1493  */
1494 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1495                         unsigned int force_freq, unsigned int pref_freq, int go)
1496 {
1497         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1498                 force_freq, pref_freq, go);
1499         if (force_freq || pref_freq) {
1500                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1501                     0)
1502                         return -1;
1503         } else {
1504                 p2p_prepare_channel_best(p2p);
1505         }
1506         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1507         if (go)
1508                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1509         else if (!force_freq)
1510                 p2p_channels_union_inplace(&p2p->channels,
1511                                            &p2p->cfg->cli_channels);
1512         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1513
1514         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1515                 p2p->op_reg_class, p2p->op_channel,
1516                 force_freq ? " (forced)" : "");
1517
1518         if (force_freq)
1519                 dev->flags |= P2P_DEV_FORCE_FREQ;
1520         else
1521                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1522
1523         return 0;
1524 }
1525
1526
1527 static void p2p_set_dev_persistent(struct p2p_device *dev,
1528                                    int persistent_group)
1529 {
1530         switch (persistent_group) {
1531         case 0:
1532                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1533                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1534                 break;
1535         case 1:
1536                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1537                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1538                 break;
1539         case 2:
1540                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1541                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1542                 break;
1543         }
1544 }
1545
1546
1547 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1548                 enum p2p_wps_method wps_method,
1549                 int go_intent, const u8 *own_interface_addr,
1550                 unsigned int force_freq, int persistent_group,
1551                 const u8 *force_ssid, size_t force_ssid_len,
1552                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1553 {
1554         struct p2p_device *dev;
1555
1556         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1557                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1558                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1559                 "oob_pw_id=%u",
1560                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1561                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1562
1563         dev = p2p_get_device(p2p, peer_addr);
1564         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1565                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1566                         MAC2STR(peer_addr));
1567                 return -1;
1568         }
1569
1570         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1571                                 go_intent == 15) < 0)
1572                 return -1;
1573
1574         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1575                 if (!(dev->info.dev_capab &
1576                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1577                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1578                                 " that is in a group and is not discoverable",
1579                                 MAC2STR(peer_addr));
1580                         return -1;
1581                 }
1582                 if (dev->oper_freq <= 0) {
1583                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1584                                 " with incomplete information",
1585                                 MAC2STR(peer_addr));
1586                         return -1;
1587                 }
1588
1589                 /*
1590                  * First, try to connect directly. If the peer does not
1591                  * acknowledge frames, assume it is sleeping and use device
1592                  * discoverability via the GO at that point.
1593                  */
1594         }
1595
1596         p2p->ssid_set = 0;
1597         if (force_ssid) {
1598                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1599                                   force_ssid, force_ssid_len);
1600                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1601                 p2p->ssid_len = force_ssid_len;
1602                 p2p->ssid_set = 1;
1603         }
1604
1605         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1606         dev->flags &= ~P2P_DEV_USER_REJECTED;
1607         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1608         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1609         if (pd_before_go_neg)
1610                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1611         else {
1612                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1613                 /*
1614                  * Assign dialog token and tie breaker here to use the same
1615                  * values in each retry within the same GO Negotiation exchange.
1616                  */
1617                 dev->dialog_token++;
1618                 if (dev->dialog_token == 0)
1619                         dev->dialog_token = 1;
1620                 dev->tie_breaker = p2p->next_tie_breaker;
1621                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1622         }
1623         dev->connect_reqs = 0;
1624         dev->go_neg_req_sent = 0;
1625         dev->go_state = UNKNOWN_GO;
1626         p2p_set_dev_persistent(dev, persistent_group);
1627         p2p->go_intent = go_intent;
1628         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1629
1630         if (p2p->state != P2P_IDLE)
1631                 p2p_stop_find(p2p);
1632
1633         dev->wps_method = wps_method;
1634         dev->oob_pw_id = oob_pw_id;
1635         dev->status = P2P_SC_SUCCESS;
1636
1637         if (p2p->p2p_scan_running) {
1638                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1639                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1640                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1641                 return 0;
1642         }
1643
1644         return p2p_connect_send(p2p, dev);
1645 }
1646
1647
1648 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1649                   enum p2p_wps_method wps_method,
1650                   int go_intent, const u8 *own_interface_addr,
1651                   unsigned int force_freq, int persistent_group,
1652                   const u8 *force_ssid, size_t force_ssid_len,
1653                   unsigned int pref_freq, u16 oob_pw_id)
1654 {
1655         struct p2p_device *dev;
1656
1657         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1658                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1659                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1660                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1661                 wps_method, persistent_group, oob_pw_id);
1662
1663         dev = p2p_get_device(p2p, peer_addr);
1664         if (dev == NULL) {
1665                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1666                         MAC2STR(peer_addr));
1667                 return -1;
1668         }
1669
1670         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1671                                 15) < 0)
1672                 return -1;
1673
1674         p2p->ssid_set = 0;
1675         if (force_ssid) {
1676                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1677                                   force_ssid, force_ssid_len);
1678                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1679                 p2p->ssid_len = force_ssid_len;
1680                 p2p->ssid_set = 1;
1681         }
1682
1683         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1684         dev->flags &= ~P2P_DEV_USER_REJECTED;
1685         dev->go_neg_req_sent = 0;
1686         dev->go_state = UNKNOWN_GO;
1687         p2p_set_dev_persistent(dev, persistent_group);
1688         p2p->go_intent = go_intent;
1689         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1690
1691         dev->wps_method = wps_method;
1692         dev->oob_pw_id = oob_pw_id;
1693         dev->status = P2P_SC_SUCCESS;
1694
1695         return 0;
1696 }
1697
1698
1699 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1700                       struct p2p_device *dev, struct p2p_message *msg)
1701 {
1702         os_get_reltime(&dev->last_seen);
1703
1704         p2p_copy_wps_info(p2p, dev, 0, msg);
1705
1706         if (msg->listen_channel) {
1707                 int freq;
1708                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1709                                            msg->listen_channel[4]);
1710                 if (freq < 0) {
1711                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1712                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1713                                 msg->listen_channel[0],
1714                                 msg->listen_channel[1],
1715                                 msg->listen_channel[2],
1716                                 msg->listen_channel[3],
1717                                 msg->listen_channel[4]);
1718                 } else {
1719                         p2p_dbg(p2p, "Update peer " MACSTR
1720                                 " Listen channel: %u -> %u MHz",
1721                                 MAC2STR(dev->info.p2p_device_addr),
1722                                 dev->listen_freq, freq);
1723                         dev->listen_freq = freq;
1724                 }
1725         }
1726
1727         if (msg->wfd_subelems) {
1728                 wpabuf_free(dev->info.wfd_subelems);
1729                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1730         }
1731
1732         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1733                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1734                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1735         } else {
1736                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1737                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1738                         "listen_freq=%d",
1739                         MAC2STR(dev->info.p2p_device_addr),
1740                         dev->info.dev_capab, dev->info.group_capab,
1741                         dev->info.device_name, dev->listen_freq);
1742         }
1743
1744         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1745
1746         if (dev->flags & P2P_DEV_USER_REJECTED) {
1747                 p2p_dbg(p2p, "Do not report rejected device");
1748                 return;
1749         }
1750
1751         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1752                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1753         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1754 }
1755
1756
1757 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1758 {
1759         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1760         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1761         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1762                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1763         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1764 }
1765
1766
1767 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1768 {
1769         if (p2p->ssid_set) {
1770                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1771                 params->ssid_len = p2p->ssid_len;
1772         } else {
1773                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1774         }
1775         p2p->ssid_set = 0;
1776
1777         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1778         return 0;
1779 }
1780
1781
1782 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1783 {
1784         struct p2p_go_neg_results res;
1785         int go = peer->go_state == LOCAL_GO;
1786         struct p2p_channels intersection;
1787
1788         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1789                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1790
1791         os_memset(&res, 0, sizeof(res));
1792         res.role_go = go;
1793         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1794         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1795         res.wps_method = peer->wps_method;
1796         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1797                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1798                         res.persistent_group = 2;
1799                 else
1800                         res.persistent_group = 1;
1801         }
1802
1803         if (go) {
1804                 /* Setup AP mode for WPS provisioning */
1805                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1806                                                p2p->op_channel);
1807                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1808                 res.ssid_len = p2p->ssid_len;
1809                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1810         } else {
1811                 res.freq = peer->oper_freq;
1812                 if (p2p->ssid_len) {
1813                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1814                         res.ssid_len = p2p->ssid_len;
1815                 }
1816         }
1817
1818         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1819         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1820         p2p_channels_intersect(&p2p->channels, &peer->channels,
1821                                &intersection);
1822         if (go) {
1823                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1824                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1825                                   &intersection);
1826         }
1827
1828         p2p_channels_to_freqs(&intersection, res.freq_list,
1829                               P2P_MAX_CHANNELS);
1830
1831         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1832
1833         p2p_clear_timeout(p2p);
1834         p2p->ssid_set = 0;
1835         peer->go_neg_req_sent = 0;
1836         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1837         peer->wps_method = WPS_NOT_READY;
1838         peer->oob_pw_id = 0;
1839         wpabuf_free(peer->go_neg_conf);
1840         peer->go_neg_conf = NULL;
1841
1842         p2p_set_state(p2p, P2P_PROVISIONING);
1843         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1844 }
1845
1846
1847 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1848                               const u8 *data, size_t len, int rx_freq)
1849 {
1850         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1851         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1852
1853         if (len < 1)
1854                 return;
1855
1856         switch (data[0]) {
1857         case P2P_GO_NEG_REQ:
1858                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1859                 break;
1860         case P2P_GO_NEG_RESP:
1861                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1862                 break;
1863         case P2P_GO_NEG_CONF:
1864                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1865                 break;
1866         case P2P_INVITATION_REQ:
1867                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1868                                            rx_freq);
1869                 break;
1870         case P2P_INVITATION_RESP:
1871                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1872                 break;
1873         case P2P_PROV_DISC_REQ:
1874                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1875                 break;
1876         case P2P_PROV_DISC_RESP:
1877                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1878                 break;
1879         case P2P_DEV_DISC_REQ:
1880                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1881                 break;
1882         case P2P_DEV_DISC_RESP:
1883                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1884                 break;
1885         default:
1886                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1887                         data[0]);
1888                 break;
1889         }
1890 }
1891
1892
1893 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1894                                  const u8 *sa, const u8 *bssid, const u8 *data,
1895                                  size_t len, int freq)
1896 {
1897         if (len < 1)
1898                 return;
1899
1900         switch (data[0]) {
1901         case WLAN_PA_VENDOR_SPECIFIC:
1902                 data++;
1903                 len--;
1904                 if (len < 4)
1905                         return;
1906                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1907                         return;
1908
1909                 data += 4;
1910                 len -= 4;
1911
1912                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1913                 break;
1914         case WLAN_PA_GAS_INITIAL_REQ:
1915                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1916                 break;
1917         case WLAN_PA_GAS_INITIAL_RESP:
1918                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1919                 break;
1920         case WLAN_PA_GAS_COMEBACK_REQ:
1921                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1922                 break;
1923         case WLAN_PA_GAS_COMEBACK_RESP:
1924                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1925                 break;
1926         }
1927 }
1928
1929
1930 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1931                    const u8 *bssid, u8 category,
1932                    const u8 *data, size_t len, int freq)
1933 {
1934         if (category == WLAN_ACTION_PUBLIC) {
1935                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1936                 return;
1937         }
1938
1939         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1940                 return;
1941
1942         if (len < 4)
1943                 return;
1944
1945         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1946                 return;
1947         data += 4;
1948         len -= 4;
1949
1950         /* P2P action frame */
1951         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1952         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1953
1954         if (len < 1)
1955                 return;
1956         switch (data[0]) {
1957         case P2P_NOA:
1958                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1959                 /* TODO */
1960                 break;
1961         case P2P_PRESENCE_REQ:
1962                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1963                 break;
1964         case P2P_PRESENCE_RESP:
1965                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1966                 break;
1967         case P2P_GO_DISC_REQ:
1968                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1969                 break;
1970         default:
1971                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1972                 break;
1973         }
1974 }
1975
1976
1977 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1978 {
1979         struct p2p_data *p2p = eloop_ctx;
1980         if (p2p->go_neg_peer == NULL)
1981                 return;
1982         if (p2p->pending_listen_freq) {
1983                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1984                 p2p->pending_listen_freq = 0;
1985         }
1986         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1987         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1988         /*
1989          * Set new timeout to make sure a previously set one does not expire
1990          * too quickly while waiting for the GO Negotiation to complete.
1991          */
1992         p2p_set_timeout(p2p, 0, 500000);
1993         p2p_connect_send(p2p, p2p->go_neg_peer);
1994 }
1995
1996
1997 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1998 {
1999         struct p2p_data *p2p = eloop_ctx;
2000         if (p2p->invite_peer == NULL)
2001                 return;
2002         if (p2p->pending_listen_freq) {
2003                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2004                 p2p->pending_listen_freq = 0;
2005         }
2006         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2007         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2008                         p2p->invite_dev_pw_id);
2009 }
2010
2011
2012 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2013                                        const u8 *ie, size_t ie_len)
2014 {
2015         struct p2p_message msg;
2016         struct p2p_device *dev;
2017
2018         os_memset(&msg, 0, sizeof(msg));
2019         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2020         {
2021                 p2p_parse_free(&msg);
2022                 return; /* not a P2P probe */
2023         }
2024
2025         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2026             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2027             != 0) {
2028                 /* The Probe Request is not part of P2P Device Discovery. It is
2029                  * not known whether the source address of the frame is the P2P
2030                  * Device Address or P2P Interface Address. Do not add a new
2031                  * peer entry based on this frames.
2032                  */
2033                 p2p_parse_free(&msg);
2034                 return;
2035         }
2036
2037         dev = p2p_get_device(p2p, addr);
2038         if (dev) {
2039                 if (msg.listen_channel) {
2040                         int freq;
2041
2042                         if (dev->country[0] == 0)
2043                                 os_memcpy(dev->country, msg.listen_channel, 3);
2044
2045                         freq = p2p_channel_to_freq(msg.listen_channel[3],
2046                                                    msg.listen_channel[4]);
2047
2048                         if (freq > 0 && dev->listen_freq != freq) {
2049                                 p2p_dbg(p2p,
2050                                         "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2051                                         MAC2STR(addr), dev->listen_freq, freq);
2052                                 dev->listen_freq = freq;
2053                         }
2054                 }
2055
2056                 os_get_reltime(&dev->last_seen);
2057                 p2p_parse_free(&msg);
2058                 return; /* already known */
2059         }
2060
2061         dev = p2p_create_device(p2p, addr);
2062         if (dev == NULL) {
2063                 p2p_parse_free(&msg);
2064                 return;
2065         }
2066
2067         os_get_reltime(&dev->last_seen);
2068         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2069
2070         if (msg.listen_channel) {
2071                 os_memcpy(dev->country, msg.listen_channel, 3);
2072                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2073                                                        msg.listen_channel[4]);
2074         }
2075
2076         p2p_copy_wps_info(p2p, dev, 1, &msg);
2077
2078         if (msg.wfd_subelems) {
2079                 wpabuf_free(dev->info.wfd_subelems);
2080                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2081         }
2082
2083         p2p_parse_free(&msg);
2084
2085         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2086                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2087                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2088                 dev->info.group_capab, dev->info.device_name,
2089                 dev->listen_freq);
2090 }
2091
2092
2093 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2094                                                 const u8 *addr,
2095                                                 struct p2p_message *msg)
2096 {
2097         struct p2p_device *dev;
2098
2099         dev = p2p_get_device(p2p, addr);
2100         if (dev) {
2101                 os_get_reltime(&dev->last_seen);
2102                 return dev; /* already known */
2103         }
2104
2105         dev = p2p_create_device(p2p, addr);
2106         if (dev == NULL)
2107                 return NULL;
2108
2109         p2p_add_dev_info(p2p, addr, dev, msg);
2110
2111         return dev;
2112 }
2113
2114
2115 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2116 {
2117         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2118                 return 1;
2119         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2120             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2121             WPA_GET_BE16(&req_dev_type[6]) == 0)
2122                 return 1; /* Category match with wildcard OUI/sub-category */
2123         return 0;
2124 }
2125
2126
2127 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2128                         size_t num_req_dev_type)
2129 {
2130         size_t i;
2131         for (i = 0; i < num_req_dev_type; i++) {
2132                 if (dev_type_match(dev_type, req_dev_type[i]))
2133                         return 1;
2134         }
2135         return 0;
2136 }
2137
2138
2139 /**
2140  * p2p_match_dev_type - Match local device type with requested type
2141  * @p2p: P2P module context from p2p_init()
2142  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2143  * Returns: 1 on match, 0 on mismatch
2144  *
2145  * This function can be used to match the Requested Device Type attribute in
2146  * WPS IE with the local device types for deciding whether to reply to a Probe
2147  * Request frame.
2148  */
2149 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2150 {
2151         struct wps_parse_attr attr;
2152         size_t i;
2153
2154         if (wps_parse_msg(wps, &attr))
2155                 return 1; /* assume no Requested Device Type attributes */
2156
2157         if (attr.num_req_dev_type == 0)
2158                 return 1; /* no Requested Device Type attributes -> match */
2159
2160         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2161                                 attr.num_req_dev_type))
2162                 return 1; /* Own Primary Device Type matches */
2163
2164         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2165                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2166                                         attr.req_dev_type,
2167                                         attr.num_req_dev_type))
2168                         return 1; /* Own Secondary Device Type matches */
2169         }
2170
2171         /* No matching device type found */
2172         return 0;
2173 }
2174
2175
2176 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2177                                          const u8 *query_hash,
2178                                          u8 query_count)
2179 {
2180         struct wpabuf *buf;
2181         u8 *len;
2182         int pw_id = -1;
2183         size_t extra = 0;
2184
2185 #ifdef CONFIG_WIFI_DISPLAY
2186         if (p2p->wfd_ie_probe_resp)
2187                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2188 #endif /* CONFIG_WIFI_DISPLAY */
2189
2190         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2191                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2192
2193         if (query_count)
2194                 extra += MAX_SVC_ADV_IE_LEN;
2195
2196         buf = wpabuf_alloc(1000 + extra);
2197         if (buf == NULL)
2198                 return NULL;
2199
2200         if (p2p->go_neg_peer) {
2201                 /* Advertise immediate availability of WPS credential */
2202                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2203         }
2204
2205         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2206                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2207                 wpabuf_free(buf);
2208                 return NULL;
2209         }
2210
2211 #ifdef CONFIG_WIFI_DISPLAY
2212         if (p2p->wfd_ie_probe_resp)
2213                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2214 #endif /* CONFIG_WIFI_DISPLAY */
2215
2216         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2217                 wpabuf_put_buf(buf,
2218                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2219
2220         /* P2P IE */
2221         len = p2p_buf_add_ie_hdr(buf);
2222         p2p_buf_add_capability(buf, p2p->dev_capab &
2223                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2224         if (p2p->ext_listen_interval)
2225                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2226                                               p2p->ext_listen_interval);
2227         p2p_buf_add_device_info(buf, p2p, NULL);
2228         p2p_buf_update_ie_hdr(buf, len);
2229
2230         if (query_count) {
2231                 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2232                                              p2p->p2ps_adv_list);
2233         }
2234
2235         return buf;
2236 }
2237
2238 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2239                                     struct wpabuf *ies,
2240                                     const u8 *addr, int rx_freq)
2241 {
2242         struct ieee80211_mgmt *resp;
2243         u8 channel, op_class;
2244
2245         resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2246                                         u.probe_resp.variable));
2247
2248         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2249                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2250         os_memcpy(resp->da, addr, ETH_ALEN);
2251         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2252         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2253         resp->u.probe_resp.beacon_int = host_to_le16(100);
2254         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2255         resp->u.probe_resp.capab_info =
2256             host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2257                      WLAN_CAPABILITY_PRIVACY |
2258                      WLAN_CAPABILITY_SHORT_SLOT_TIME);
2259
2260         wpabuf_put_u8(buf, WLAN_EID_SSID);
2261         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2262         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2263
2264         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2265         wpabuf_put_u8(buf, 8);
2266         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2267         wpabuf_put_u8(buf, 90 / 5);
2268         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2269         wpabuf_put_u8(buf, 180 / 5);
2270         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2271         wpabuf_put_u8(buf, 360 / 5);
2272         wpabuf_put_u8(buf, 480 / 5);
2273         wpabuf_put_u8(buf, 540 / 5);
2274
2275         if (!rx_freq) {
2276                 channel = p2p->cfg->channel;
2277         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2278                 p2p_err(p2p, "Failed to convert freq to channel");
2279                 return -1;
2280         }
2281
2282         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2283         wpabuf_put_u8(buf, 1);
2284         wpabuf_put_u8(buf, channel);
2285
2286         wpabuf_put_buf(buf, ies);
2287
2288         return 0;
2289 }
2290
2291 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2292 {
2293         struct p2ps_advertisement *adv_data;
2294         int any_wfa;
2295
2296         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2297
2298         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2299         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2300
2301         adv_data = p2p->p2ps_adv_list;
2302         while (adv_data) {
2303                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2304                         return 1; /* exact hash match */
2305                 if (any_wfa &&
2306                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2307                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2308                         return 1; /* WFA service match */
2309                 adv_data = adv_data->next;
2310         }
2311
2312         return 0;
2313 }
2314
2315
2316 static enum p2p_probe_req_status
2317 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2318                 const u8 *bssid, const u8 *ie, size_t ie_len,
2319                 unsigned int rx_freq)
2320 {
2321         struct ieee802_11_elems elems;
2322         struct wpabuf *buf;
2323         struct p2p_message msg;
2324         struct wpabuf *ies;
2325
2326         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2327             ParseFailed) {
2328                 /* Ignore invalid Probe Request frames */
2329                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2330                 return P2P_PREQ_MALFORMED;
2331         }
2332
2333         if (elems.p2p == NULL) {
2334                 /* not a P2P probe - ignore it */
2335                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2336                 return P2P_PREQ_NOT_P2P;
2337         }
2338
2339         if (dst && !is_broadcast_ether_addr(dst) &&
2340             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2341                 /* Not sent to the broadcast address or our P2P Device Address
2342                  */
2343                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2344                         MAC2STR(dst));
2345                 return P2P_PREQ_NOT_PROCESSED;
2346         }
2347
2348         if (bssid && !is_broadcast_ether_addr(bssid)) {
2349                 /* Not sent to the Wildcard BSSID */
2350                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2351                         MAC2STR(bssid));
2352                 return P2P_PREQ_NOT_PROCESSED;
2353         }
2354
2355         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2356             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2357             0) {
2358                 /* not using P2P Wildcard SSID - ignore */
2359                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2360                 return P2P_PREQ_NOT_PROCESSED;
2361         }
2362
2363         if (supp_rates_11b_only(&elems)) {
2364                 /* Indicates support for 11b rates only */
2365                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2366                 return P2P_PREQ_NOT_P2P;
2367         }
2368
2369         os_memset(&msg, 0, sizeof(msg));
2370         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2371                 /* Could not parse P2P attributes */
2372                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2373                 return P2P_PREQ_NOT_P2P;
2374         }
2375
2376         if (msg.service_hash && msg.service_hash_count) {
2377                 const u8 *hash = msg.service_hash;
2378                 u8 i;
2379                 int p2ps_svc_found = 0;
2380
2381                 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz",
2382                         p2p->in_listen, p2p->drv_in_listen, rx_freq,
2383                         p2p->cfg->channel, p2p->pending_listen_freq);
2384
2385                 if (!p2p->in_listen && !p2p->drv_in_listen &&
2386                     p2p->pending_listen_freq && rx_freq &&
2387                     rx_freq != p2p->pending_listen_freq) {
2388                         p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz",
2389                                 rx_freq, p2p->pending_listen_freq);
2390                         p2p_parse_free(&msg);
2391                         return P2P_PREQ_NOT_LISTEN;
2392                 }
2393
2394                 for (i = 0; i < msg.service_hash_count; i++) {
2395                         if (p2p_service_find_asp(p2p, hash)) {
2396                                 p2p_dbg(p2p, "Service Hash match found: "
2397                                         MACSTR, MAC2STR(hash));
2398                                 p2ps_svc_found = 1;
2399                                 break;
2400                         }
2401                         hash += P2PS_HASH_LEN;
2402                 }
2403
2404                 /* Probed hash unknown */
2405                 if (!p2ps_svc_found) {
2406                         p2p_dbg(p2p, "No Service Hash match found");
2407                         p2p_parse_free(&msg);
2408                         return P2P_PREQ_NOT_PROCESSED;
2409                 }
2410         } else {
2411                 /* This is not a P2PS Probe Request */
2412                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2413
2414                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2415                         /* not in Listen state - ignore Probe Request */
2416                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2417                                 p2p->in_listen, p2p->drv_in_listen);
2418                         p2p_parse_free(&msg);
2419                         return P2P_PREQ_NOT_LISTEN;
2420                 }
2421         }
2422
2423         if (msg.device_id &&
2424             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2425                 /* Device ID did not match */
2426                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2427                         MAC2STR(msg.device_id));
2428                 p2p_parse_free(&msg);
2429                 return P2P_PREQ_NOT_PROCESSED;
2430         }
2431
2432         /* Check Requested Device Type match */
2433         if (msg.wps_attributes &&
2434             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2435                 /* No match with Requested Device Type */
2436                 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it");
2437                 p2p_parse_free(&msg);
2438                 return P2P_PREQ_NOT_PROCESSED;
2439         }
2440
2441         if (!p2p->cfg->send_probe_resp) {
2442                 /* Response generated elsewhere */
2443                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2444                 p2p_parse_free(&msg);
2445                 return P2P_PREQ_NOT_PROCESSED;
2446         }
2447
2448         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2449
2450         /*
2451          * We do not really have a specific BSS that this frame is advertising,
2452          * so build a frame that has some information in valid format. This is
2453          * really only used for discovery purposes, not to learn exact BSS
2454          * parameters.
2455          */
2456         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2457                                        msg.service_hash_count);
2458         p2p_parse_free(&msg);
2459         if (ies == NULL)
2460                 return P2P_PREQ_NOT_PROCESSED;
2461
2462         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2463         if (buf == NULL) {
2464                 wpabuf_free(ies);
2465                 return P2P_PREQ_NOT_PROCESSED;
2466         }
2467
2468         if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2469                 wpabuf_free(ies);
2470                 wpabuf_free(buf);
2471                 return P2P_PREQ_NOT_PROCESSED;
2472         }
2473
2474         wpabuf_free(ies);
2475
2476         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2477
2478         wpabuf_free(buf);
2479
2480         return P2P_PREQ_PROCESSED;
2481 }
2482
2483
2484 enum p2p_probe_req_status
2485 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2486                  const u8 *bssid, const u8 *ie, size_t ie_len,
2487                  unsigned int rx_freq, int p2p_lo_started)
2488 {
2489         enum p2p_probe_req_status res;
2490
2491         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2492
2493         if (p2p_lo_started) {
2494                 p2p_dbg(p2p,
2495                         "Probe Response is offloaded, do not reply Probe Request");
2496                 return P2P_PREQ_PROCESSED;
2497         }
2498
2499         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2500         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2501                 return res;
2502
2503         /*
2504          * Activate a pending GO Negotiation/Invite flow if a received Probe
2505          * Request frame is from an expected peer. Some devices may share the
2506          * same address for P2P and non-P2P STA running simultaneously. The
2507          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2508          * return values verified above ensure we are handling a Probe Request
2509          * frame from a P2P peer.
2510          */
2511         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2512             p2p->go_neg_peer &&
2513             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2514             == 0 &&
2515             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2516                 /* Received a Probe Request from GO Negotiation peer */
2517                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2518                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2519                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2520                 return res;
2521         }
2522
2523         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2524             p2p->invite_peer &&
2525             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2526             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2527             == 0) {
2528                 /* Received a Probe Request from Invite peer */
2529                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2530                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2531                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2532                 return res;
2533         }
2534
2535         return res;
2536 }
2537
2538
2539 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2540                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2541 {
2542         struct wpabuf *tmp;
2543         u8 *lpos;
2544         size_t tmplen;
2545         int res;
2546         u8 group_capab;
2547         struct p2p_message msg;
2548
2549         if (p2p_ie == NULL)
2550                 return 0; /* WLAN AP is not a P2P manager */
2551
2552         os_memset(&msg, 0, sizeof(msg));
2553         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2554                 return 0;
2555
2556         p2p_dbg(p2p, "BSS P2P manageability %s",
2557                 msg.manageability ? "enabled" : "disabled");
2558
2559         if (!msg.manageability)
2560                 return 0;
2561
2562         /*
2563          * (Re)Association Request - P2P IE
2564          * P2P Capability attribute (shall be present)
2565          * P2P Interface attribute (present if concurrent device and
2566          *      P2P Management is enabled)
2567          */
2568         tmp = wpabuf_alloc(200);
2569         if (tmp == NULL)
2570                 return -1;
2571
2572         lpos = p2p_buf_add_ie_hdr(tmp);
2573         group_capab = 0;
2574         if (p2p->num_groups > 0) {
2575                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2576                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2577                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2578                     p2p->cross_connect)
2579                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2580         }
2581         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2582         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2583             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2584                 p2p_buf_add_p2p_interface(tmp, p2p);
2585         p2p_buf_update_ie_hdr(tmp, lpos);
2586
2587         tmplen = wpabuf_len(tmp);
2588         if (tmplen > len)
2589                 res = -1;
2590         else {
2591                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2592                 res = tmplen;
2593         }
2594         wpabuf_free(tmp);
2595
2596         return res;
2597 }
2598
2599
2600 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2601                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2602 {
2603         struct wpabuf *tmp;
2604         u8 *lpos;
2605         struct p2p_device *peer;
2606         size_t tmplen;
2607         int res;
2608         size_t extra = 0;
2609
2610         if (!p2p_group)
2611                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2612
2613 #ifdef CONFIG_WIFI_DISPLAY
2614         if (p2p->wfd_ie_assoc_req)
2615                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2616 #endif /* CONFIG_WIFI_DISPLAY */
2617
2618         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2619                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2620
2621         /*
2622          * (Re)Association Request - P2P IE
2623          * P2P Capability attribute (shall be present)
2624          * Extended Listen Timing (may be present)
2625          * P2P Device Info attribute (shall be present)
2626          */
2627         tmp = wpabuf_alloc(200 + extra);
2628         if (tmp == NULL)
2629                 return -1;
2630
2631 #ifdef CONFIG_WIFI_DISPLAY
2632         if (p2p->wfd_ie_assoc_req)
2633                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2634 #endif /* CONFIG_WIFI_DISPLAY */
2635
2636         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2637                 wpabuf_put_buf(tmp,
2638                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2639
2640         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2641
2642         lpos = p2p_buf_add_ie_hdr(tmp);
2643         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2644         if (p2p->ext_listen_interval)
2645                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2646                                               p2p->ext_listen_interval);
2647         p2p_buf_add_device_info(tmp, p2p, peer);
2648         p2p_buf_update_ie_hdr(tmp, lpos);
2649
2650         tmplen = wpabuf_len(tmp);
2651         if (tmplen > len)
2652                 res = -1;
2653         else {
2654                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2655                 res = tmplen;
2656         }
2657         wpabuf_free(tmp);
2658
2659         return res;
2660 }
2661
2662
2663 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2664 {
2665         struct wpabuf *p2p_ie;
2666         int ret;
2667
2668         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2669         if (p2p_ie == NULL)
2670                 return 0;
2671
2672         ret = p2p_attr_text(p2p_ie, buf, end);
2673         wpabuf_free(p2p_ie);
2674         return ret;
2675 }
2676
2677
2678 struct p2ps_advertisement *
2679 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2680 {
2681         struct p2ps_advertisement *adv_data;
2682
2683         if (!p2p)
2684                 return NULL;
2685
2686         adv_data = p2p->p2ps_adv_list;
2687         while (adv_data) {
2688                 if (adv_data->id == adv_id)
2689                         return adv_data;
2690                 adv_data = adv_data->next;
2691         }
2692
2693         return NULL;
2694 }
2695
2696
2697 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2698 {
2699         struct p2ps_advertisement *adv_data;
2700         struct p2ps_advertisement **prior;
2701
2702         if (!p2p)
2703                 return -1;
2704
2705         adv_data = p2p->p2ps_adv_list;
2706         prior = &p2p->p2ps_adv_list;
2707         while (adv_data) {
2708                 if (adv_data->id == adv_id) {
2709                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2710                         *prior = adv_data->next;
2711                         os_free(adv_data);
2712                         return 0;
2713                 }
2714                 prior = &adv_data->next;
2715                 adv_data = adv_data->next;
2716         }
2717
2718         return -1;
2719 }
2720
2721
2722 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2723                         const char *adv_str, u8 svc_state, u16 config_methods,
2724                         const char *svc_info, const u8 *cpt_priority)
2725 {
2726         struct p2ps_advertisement *adv_data, *tmp, **prev;
2727         u8 buf[P2PS_HASH_LEN];
2728         size_t adv_data_len, adv_len, info_len = 0;
2729         int i;
2730
2731         if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2732                 return -1;
2733
2734         if (!(config_methods & p2p->cfg->config_methods)) {
2735                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2736                         config_methods, p2p->cfg->config_methods);
2737                 return -1;
2738         }
2739
2740         if (!p2ps_gen_hash(p2p, adv_str, buf))
2741                 return -1;
2742
2743         if (svc_info)
2744                 info_len = os_strlen(svc_info);
2745         adv_len = os_strlen(adv_str);
2746         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2747                 info_len + 1;
2748
2749         adv_data = os_zalloc(adv_data_len);
2750         if (!adv_data)
2751                 return -1;
2752
2753         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2754         adv_data->id = adv_id;
2755         adv_data->state = svc_state;
2756         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2757         adv_data->auto_accept = (u8) auto_accept;
2758         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2759
2760         for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2761                 adv_data->cpt_priority[i] = cpt_priority[i];
2762                 adv_data->cpt_mask |= cpt_priority[i];
2763         }
2764
2765         if (svc_info && info_len) {
2766                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2767                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2768         }
2769
2770         /*
2771          * Group Advertisements by service string. They do not need to be
2772          * sorted, but groups allow easier Probe Response instance grouping
2773          */
2774         tmp = p2p->p2ps_adv_list;
2775         prev = &p2p->p2ps_adv_list;
2776         while (tmp) {
2777                 if (tmp->id == adv_data->id) {
2778                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2779                                 os_free(adv_data);
2780                                 return -1;
2781                         }
2782                         adv_data->next = tmp->next;
2783                         *prev = adv_data;
2784                         os_free(tmp);
2785                         goto inserted;
2786                 } else {
2787                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2788                                 adv_data->next = tmp->next;
2789                                 tmp->next = adv_data;
2790                                 goto inserted;
2791                         }
2792                 }
2793                 prev = &tmp->next;
2794                 tmp = tmp->next;
2795         }
2796
2797         /* No svc_name match found */
2798         adv_data->next = p2p->p2ps_adv_list;
2799         p2p->p2ps_adv_list = adv_data;
2800
2801 inserted:
2802         p2p_dbg(p2p,
2803                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2804                 adv_id, adv_data->config_methods, svc_state, adv_str,
2805                 adv_data->cpt_mask);
2806
2807         return 0;
2808 }
2809
2810
2811 void p2p_service_flush_asp(struct p2p_data *p2p)
2812 {
2813         struct p2ps_advertisement *adv, *prev;
2814
2815         if (!p2p)
2816                 return;
2817
2818         adv = p2p->p2ps_adv_list;
2819         while (adv) {
2820                 prev = adv;
2821                 adv = adv->next;
2822                 os_free(prev);
2823         }
2824
2825         p2p->p2ps_adv_list = NULL;
2826         p2ps_prov_free(p2p);
2827         p2p_dbg(p2p, "All ASP advertisements flushed");
2828 }
2829
2830
2831 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2832 {
2833         struct p2p_message msg;
2834
2835         os_memset(&msg, 0, sizeof(msg));
2836         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2837                 return -1;
2838
2839         if (msg.p2p_device_addr) {
2840                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2841                 return 0;
2842         } else if (msg.device_id) {
2843                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2844                 return 0;
2845         }
2846         return -1;
2847 }
2848
2849
2850 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2851 {
2852         struct wpabuf *p2p_ie;
2853         int ret;
2854
2855         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2856                                              P2P_IE_VENDOR_TYPE);
2857         if (p2p_ie == NULL)
2858                 return -1;
2859         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2860         wpabuf_free(p2p_ie);
2861         return ret;
2862 }
2863
2864
2865 static void p2p_clear_go_neg(struct p2p_data *p2p)
2866 {
2867         p2p->go_neg_peer = NULL;
2868         p2p_clear_timeout(p2p);
2869         p2p_set_state(p2p, P2P_IDLE);
2870 }
2871
2872
2873 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2874 {
2875         if (p2p->go_neg_peer == NULL) {
2876                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2877                 return; /* No pending Group Formation */
2878         }
2879
2880         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2881             0) {
2882                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2883                         MACSTR " (GO Negotiation peer " MACSTR ")",
2884                         MAC2STR(mac_addr),
2885                         MAC2STR(p2p->go_neg_peer->intended_addr));
2886                 return; /* Ignore unexpected peer address */
2887         }
2888
2889         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2890                 MAC2STR(mac_addr));
2891
2892         p2p_clear_go_neg(p2p);
2893 }
2894
2895
2896 void p2p_group_formation_failed(struct p2p_data *p2p)
2897 {
2898         if (p2p->go_neg_peer == NULL) {
2899                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2900                 return; /* No pending Group Formation */
2901         }
2902
2903         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2904                 MAC2STR(p2p->go_neg_peer->intended_addr));
2905
2906         p2p_clear_go_neg(p2p);
2907 }
2908
2909
2910 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2911 {
2912         struct p2p_data *p2p;
2913
2914         if (cfg->max_peers < 1 ||
2915             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2916                 return NULL;
2917
2918         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2919         if (p2p == NULL)
2920                 return NULL;
2921         p2p->cfg = (struct p2p_config *) (p2p + 1);
2922         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2923         if (cfg->dev_name)
2924                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2925         if (cfg->manufacturer)
2926                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2927         if (cfg->model_name)
2928                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2929         if (cfg->model_number)
2930                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2931         if (cfg->serial_number)
2932                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2933         if (cfg->pref_chan) {
2934                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2935                                                 sizeof(struct p2p_channel));
2936                 if (p2p->cfg->pref_chan) {
2937                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2938                                   cfg->num_pref_chan *
2939                                   sizeof(struct p2p_channel));
2940                 } else
2941                         p2p->cfg->num_pref_chan = 0;
2942         }
2943
2944         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2945
2946         p2p->min_disc_int = 1;
2947         p2p->max_disc_int = 3;
2948         p2p->max_disc_tu = -1;
2949
2950         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2951                 p2p->next_tie_breaker = 0;
2952         p2p->next_tie_breaker &= 0x01;
2953         if (cfg->sd_request)
2954                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2955         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2956         if (cfg->concurrent_operations)
2957                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2958         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2959
2960         dl_list_init(&p2p->devices);
2961
2962         p2p->go_timeout = 100;
2963         p2p->client_timeout = 20;
2964         p2p->num_p2p_sd_queries = 0;
2965
2966         p2p_dbg(p2p, "initialized");
2967         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2968         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2969
2970         return p2p;
2971 }
2972
2973
2974 void p2p_deinit(struct p2p_data *p2p)
2975 {
2976 #ifdef CONFIG_WIFI_DISPLAY
2977         wpabuf_free(p2p->wfd_ie_beacon);
2978         wpabuf_free(p2p->wfd_ie_probe_req);
2979         wpabuf_free(p2p->wfd_ie_probe_resp);
2980         wpabuf_free(p2p->wfd_ie_assoc_req);
2981         wpabuf_free(p2p->wfd_ie_invitation);
2982         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2983         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2984         wpabuf_free(p2p->wfd_ie_go_neg);
2985         wpabuf_free(p2p->wfd_dev_info);
2986         wpabuf_free(p2p->wfd_assoc_bssid);
2987         wpabuf_free(p2p->wfd_coupled_sink_info);
2988         wpabuf_free(p2p->wfd_r2_dev_info);
2989 #endif /* CONFIG_WIFI_DISPLAY */
2990
2991         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2992         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2993         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2994         p2p_flush(p2p);
2995         p2p_free_req_dev_types(p2p);
2996         os_free(p2p->cfg->dev_name);
2997         os_free(p2p->cfg->manufacturer);
2998         os_free(p2p->cfg->model_name);
2999         os_free(p2p->cfg->model_number);
3000         os_free(p2p->cfg->serial_number);
3001         os_free(p2p->cfg->pref_chan);
3002         os_free(p2p->groups);
3003         p2ps_prov_free(p2p);
3004         wpabuf_free(p2p->sd_resp);
3005         p2p_remove_wps_vendor_extensions(p2p);
3006         os_free(p2p->no_go_freq.range);
3007         p2p_service_flush_asp(p2p);
3008
3009         os_free(p2p);
3010 }
3011
3012
3013 void p2p_flush(struct p2p_data *p2p)
3014 {
3015         struct p2p_device *dev, *prev;
3016
3017         p2p_ext_listen(p2p, 0, 0);
3018         p2p_stop_find(p2p);
3019         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3020                               list) {
3021                 dl_list_del(&dev->list);
3022                 p2p_device_free(p2p, dev);
3023         }
3024         p2p_free_sd_queries(p2p);
3025         p2p->ssid_set = 0;
3026         p2ps_prov_free(p2p);
3027         p2p_reset_pending_pd(p2p);
3028         p2p->override_pref_op_class = 0;
3029         p2p->override_pref_channel = 0;
3030 }
3031
3032
3033 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3034 {
3035         struct p2p_device *dev;
3036
3037         dev = p2p_get_device(p2p, addr);
3038         if (dev == NULL)
3039                 return -1;
3040
3041         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3042
3043         if (p2p->go_neg_peer == dev) {
3044                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3045                 p2p->go_neg_peer = NULL;
3046         }
3047
3048         dev->wps_method = WPS_NOT_READY;
3049         dev->oob_pw_id = 0;
3050         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3051         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3052
3053         return 0;
3054 }
3055
3056
3057 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3058 {
3059         os_free(p2p->cfg->dev_name);
3060         if (dev_name) {
3061                 p2p->cfg->dev_name = os_strdup(dev_name);
3062                 if (p2p->cfg->dev_name == NULL)
3063                         return -1;
3064         } else
3065                 p2p->cfg->dev_name = NULL;
3066         return 0;
3067 }
3068
3069
3070 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3071 {
3072         os_free(p2p->cfg->manufacturer);
3073         p2p->cfg->manufacturer = NULL;
3074         if (manufacturer) {
3075                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3076                 if (p2p->cfg->manufacturer == NULL)
3077                         return -1;
3078         }
3079
3080         return 0;
3081 }
3082
3083
3084 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3085 {
3086         os_free(p2p->cfg->model_name);
3087         p2p->cfg->model_name = NULL;
3088         if (model_name) {
3089                 p2p->cfg->model_name = os_strdup(model_name);
3090                 if (p2p->cfg->model_name == NULL)
3091                         return -1;
3092         }
3093
3094         return 0;
3095 }
3096
3097
3098 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3099 {
3100         os_free(p2p->cfg->model_number);
3101         p2p->cfg->model_number = NULL;
3102         if (model_number) {
3103                 p2p->cfg->model_number = os_strdup(model_number);
3104                 if (p2p->cfg->model_number == NULL)
3105                         return -1;
3106         }
3107
3108         return 0;
3109 }
3110
3111
3112 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3113 {
3114         os_free(p2p->cfg->serial_number);
3115         p2p->cfg->serial_number = NULL;
3116         if (serial_number) {
3117                 p2p->cfg->serial_number = os_strdup(serial_number);
3118                 if (p2p->cfg->serial_number == NULL)
3119                         return -1;
3120         }
3121
3122         return 0;
3123 }
3124
3125
3126 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3127 {
3128         p2p->cfg->config_methods = config_methods;
3129 }
3130
3131
3132 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3133 {
3134         os_memcpy(p2p->cfg->uuid, uuid, 16);
3135 }
3136
3137
3138 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3139 {
3140         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3141         return 0;
3142 }
3143
3144
3145 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3146                           size_t num_dev_types)
3147 {
3148         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3149                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3150         p2p->cfg->num_sec_dev_types = num_dev_types;
3151         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3152         return 0;
3153 }
3154
3155
3156 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3157 {
3158         int i;
3159
3160         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3161                 wpabuf_free(p2p->wps_vendor_ext[i]);
3162                 p2p->wps_vendor_ext[i] = NULL;
3163         }
3164 }
3165
3166
3167 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3168                                  const struct wpabuf *vendor_ext)
3169 {
3170         int i;
3171
3172         if (vendor_ext == NULL)
3173                 return -1;
3174
3175         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3176                 if (p2p->wps_vendor_ext[i] == NULL)
3177                         break;
3178         }
3179         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3180                 return -1;
3181
3182         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3183         if (p2p->wps_vendor_ext[i] == NULL)
3184                 return -1;
3185
3186         return 0;
3187 }
3188
3189
3190 int p2p_set_country(struct p2p_data *p2p, const char *country)
3191 {
3192         os_memcpy(p2p->cfg->country, country, 3);
3193         return 0;
3194 }
3195
3196
3197 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3198 {
3199         int res;
3200
3201         if (dev->sd_pending_bcast_queries == 0) {
3202                 /* Initialize with total number of registered broadcast
3203                  * SD queries. */
3204                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3205         }
3206
3207         res = p2p_start_sd(p2p, dev);
3208         if (res == -2)
3209                 return -2;
3210         if (res == 0)
3211                 return 1;
3212
3213         if (dev->req_config_methods &&
3214             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3215                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3216                         MACSTR " (config methods 0x%x)",
3217                         MAC2STR(dev->info.p2p_device_addr),
3218                         dev->req_config_methods);
3219                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3220                         return 1;
3221         }
3222
3223         return 0;
3224 }
3225
3226
3227 void p2p_continue_find(struct p2p_data *p2p)
3228 {
3229         struct p2p_device *dev;
3230         int found, res;
3231
3232         p2p_set_state(p2p, P2P_SEARCH);
3233
3234         /* Continue from the device following the last iteration */
3235         found = 0;
3236         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3237                 if (dev == p2p->last_p2p_find_oper) {
3238                         found = 1;
3239                         continue;
3240                 }
3241                 if (!found)
3242                         continue;
3243                 res = p2p_pre_find_operation(p2p, dev);
3244                 if (res > 0) {
3245                         p2p->last_p2p_find_oper = dev;
3246                         return;
3247                 }
3248                 if (res == -2)
3249                         goto skip_sd;
3250         }
3251
3252         /*
3253          * Wrap around to the beginning of the list and continue until the last
3254          * iteration device.
3255          */
3256         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3257                 res = p2p_pre_find_operation(p2p, dev);
3258                 if (res > 0) {
3259                         p2p->last_p2p_find_oper = dev;
3260                         return;
3261                 }
3262                 if (res == -2)
3263                         goto skip_sd;
3264                 if (dev == p2p->last_p2p_find_oper)
3265                         break;
3266         }
3267
3268 skip_sd:
3269         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3270         p2p_listen_in_find(p2p, 1);
3271 }
3272
3273
3274 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3275 {
3276         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3277                 success);
3278         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3279
3280         if (!success) {
3281                 if (p2p->sd_peer) {
3282                         if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3283                                 os_memcpy(p2p->sd_query_no_ack,
3284                                           p2p->sd_peer->info.p2p_device_addr,
3285                                           ETH_ALEN);
3286                                 p2p_dbg(p2p,
3287                                         "First SD Query no-ACK in this search iteration: "
3288                                         MACSTR, MAC2STR(p2p->sd_query_no_ack));
3289                         }
3290                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3291                 }
3292                 p2p->sd_peer = NULL;
3293                 if (p2p->state != P2P_IDLE)
3294                         p2p_continue_find(p2p);
3295                 return;
3296         }
3297
3298         if (p2p->sd_peer == NULL) {
3299                 p2p_dbg(p2p, "No SD peer entry known");
3300                 if (p2p->state != P2P_IDLE)
3301                         p2p_continue_find(p2p);
3302                 return;
3303         }
3304
3305         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3306                 /* Update the pending broadcast SD query count for this device
3307                  */
3308                 p2p->sd_peer->sd_pending_bcast_queries--;
3309
3310                 /*
3311                  * If there are no pending broadcast queries for this device,
3312                  * mark it as done (-1).
3313                  */
3314                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3315                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3316         }
3317
3318         /* Wait for response from the peer */
3319         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3320         p2p_set_timeout(p2p, 0, 200000);
3321 }
3322
3323
3324 /**
3325  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3326  * @p2p: P2P module context from p2p_init()
3327  */
3328 static void p2p_retry_pd(struct p2p_data *p2p)
3329 {
3330         struct p2p_device *dev;
3331
3332         /*
3333          * Retry the prov disc req attempt only for the peer that the user had
3334          * requested.
3335          */
3336
3337         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3338                 if (os_memcmp(p2p->pending_pd_devaddr,
3339                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3340                         continue;
3341                 if (!dev->req_config_methods)
3342                         continue;
3343
3344                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3345                         MACSTR " (config methods 0x%x)",
3346                         MAC2STR(dev->info.p2p_device_addr),
3347                         dev->req_config_methods);
3348                 p2p_send_prov_disc_req(p2p, dev,
3349                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3350                                        p2p->pd_force_freq);
3351                 return;
3352         }
3353 }
3354
3355
3356 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3357 {
3358         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3359                 success);
3360
3361         /*
3362          * Postpone resetting the pending action state till after we actually
3363          * time out. This allows us to take some action like notifying any
3364          * interested parties about no response to the request.
3365          *
3366          * When the timer (below) goes off we check in IDLE, SEARCH, or
3367          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3368          * requests in, if this was still pending and then raise notification.
3369          */
3370
3371         if (!success) {
3372                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3373
3374                 if (p2p->user_initiated_pd &&
3375                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3376                 {
3377                         /* Retry request from timeout to avoid busy loops */
3378                         p2p->pending_action_state = P2P_PENDING_PD;
3379                         p2p_set_timeout(p2p, 0, 50000);
3380                 } else if (p2p->state != P2P_IDLE)
3381                         p2p_continue_find(p2p);
3382                 else if (p2p->user_initiated_pd) {
3383                         p2p->pending_action_state = P2P_PENDING_PD;
3384                         p2p_set_timeout(p2p, 0, 300000);
3385                 }
3386                 return;
3387         }
3388
3389         /*
3390          * If after PD Request the peer doesn't expect to receive PD Response
3391          * the PD Request ACK indicates a completion of the current PD. This
3392          * happens only on the advertiser side sending the follow-on PD Request
3393          * with the status different than 12 (Success: accepted by user).
3394          */
3395         if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3396             p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3397                 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3398
3399                 if (p2p->send_action_in_progress) {
3400                         p2p->send_action_in_progress = 0;
3401                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3402                 }
3403
3404                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3405
3406                 if (p2p->cfg->p2ps_prov_complete) {
3407                         p2p->cfg->p2ps_prov_complete(
3408                                 p2p->cfg->cb_ctx,
3409                                 p2p->p2ps_prov->status,
3410                                 p2p->p2ps_prov->adv_mac,
3411                                 p2p->p2ps_prov->adv_mac,
3412                                 p2p->p2ps_prov->session_mac,
3413                                 NULL, p2p->p2ps_prov->adv_id,
3414                                 p2p->p2ps_prov->session_id,
3415                                 0, 0, NULL, 0, 0, 0,
3416                                 NULL, NULL, 0, 0, NULL, 0);
3417                 }
3418
3419                 if (p2p->user_initiated_pd)
3420                         p2p_reset_pending_pd(p2p);
3421
3422                 p2ps_prov_free(p2p);
3423                 return;
3424         }
3425
3426         /*
3427          * This postponing, of resetting pending_action_state, needs to be
3428          * done only for user initiated PD requests and not internal ones.
3429          */
3430         if (p2p->user_initiated_pd)
3431                 p2p->pending_action_state = P2P_PENDING_PD;
3432         else
3433                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3434
3435         /* Wait for response from the peer */
3436         if (p2p->state == P2P_SEARCH)
3437                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3438         p2p_set_timeout(p2p, 0, 200000);
3439 }
3440
3441
3442 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3443 {
3444         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3445                 success);
3446
3447         if (p2p->send_action_in_progress) {
3448                 p2p->send_action_in_progress = 0;
3449                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3450         }
3451
3452         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3453
3454         if (!success)
3455                 return;
3456
3457         if (!p2p->cfg->prov_disc_resp_cb ||
3458             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3459                 return;
3460
3461         p2p_dbg(p2p,
3462                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3463 }
3464
3465
3466 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3467                          struct os_reltime *rx_time, int level, const u8 *ies,
3468                          size_t ies_len)
3469 {
3470         if (os_reltime_before(rx_time, &p2p->find_start)) {
3471                 /*
3472                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3473                  * scan results for relatively long time. To avoid reporting
3474                  * stale information, update P2P peers only based on results
3475                  * that have based on frames received after the last p2p_find
3476                  * operation was started.
3477                  */
3478                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3479                         " (rx_time=%u.%06u find_start=%u.%06u)",
3480                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3481                         (unsigned int) rx_time->usec,
3482                         (unsigned int) p2p->find_start.sec,
3483                         (unsigned int) p2p->find_start.usec);
3484                 return 0;
3485         }
3486
3487         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3488
3489         return 0;
3490 }
3491
3492
3493 void p2p_scan_res_handled(struct p2p_data *p2p)
3494 {
3495         if (!p2p->p2p_scan_running) {
3496                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3497         }
3498         p2p->p2p_scan_running = 0;
3499         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3500
3501         if (p2p_run_after_scan(p2p))
3502                 return;
3503         if (p2p->state == P2P_SEARCH)
3504                 p2p_continue_find(p2p);
3505 }
3506
3507
3508 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3509                  unsigned int bands)
3510 {
3511         u8 dev_capab;
3512         u8 *len;
3513
3514 #ifdef CONFIG_WIFI_DISPLAY
3515         if (p2p->wfd_ie_probe_req)
3516                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3517 #endif /* CONFIG_WIFI_DISPLAY */
3518
3519         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3520                 wpabuf_put_buf(ies,
3521                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3522
3523         len = p2p_buf_add_ie_hdr(ies);
3524
3525         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3526
3527         /* P2PS requires Probe Request frames to include SD bit */
3528         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3529                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3530
3531         p2p_buf_add_capability(ies, dev_capab, 0);
3532
3533         if (dev_id)
3534                 p2p_buf_add_device_id(ies, dev_id);
3535         if (p2p->cfg->reg_class && p2p->cfg->channel)
3536                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3537                                            p2p->cfg->reg_class,
3538                                            p2p->cfg->channel);
3539         if (p2p->ext_listen_interval)
3540                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3541                                               p2p->ext_listen_interval);
3542
3543         if (bands & BAND_60_GHZ)
3544                 p2p_buf_add_device_info(ies, p2p, NULL);
3545
3546         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3547                 p2p_buf_add_service_hash(ies, p2p);
3548
3549         /* TODO: p2p_buf_add_operating_channel() if GO */
3550         p2p_buf_update_ie_hdr(ies, len);
3551 }
3552
3553
3554 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3555 {
3556         size_t len = 100;
3557
3558 #ifdef CONFIG_WIFI_DISPLAY
3559         if (p2p && p2p->wfd_ie_probe_req)
3560                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3561 #endif /* CONFIG_WIFI_DISPLAY */
3562
3563         if (p2p && p2p->vendor_elem &&
3564             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3565                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3566
3567         return len;
3568 }
3569
3570
3571 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3572 {
3573         return p2p_attr_text(p2p_ie, buf, end);
3574 }
3575
3576
3577 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3578 {
3579         struct p2p_device *dev = p2p->go_neg_peer;
3580         int timeout;
3581
3582         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3583
3584         if (dev == NULL) {
3585                 p2p_dbg(p2p, "No pending GO Negotiation");
3586                 return;
3587         }
3588
3589         if (success) {
3590                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3591                         p2p_set_state(p2p, P2P_IDLE);
3592                         return;
3593                 }
3594         } else if (dev->go_neg_req_sent) {
3595                 /* Cancel the increment from p2p_connect_send() on failure */
3596                 dev->go_neg_req_sent--;
3597         }
3598
3599         if (!success &&
3600             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3601             !is_zero_ether_addr(dev->member_in_go_dev)) {
3602                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3603                         MAC2STR(dev->info.p2p_device_addr));
3604                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3605                 p2p_send_dev_disc_req(p2p, dev);
3606                 return;
3607         }
3608
3609         /*
3610          * Use P2P find, if needed, to find the other device from its listen
3611          * channel.
3612          */
3613         p2p_set_state(p2p, P2P_CONNECT);
3614         timeout = success ? 500000 : 100000;
3615         if (!success && p2p->go_neg_peer &&
3616             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3617                 unsigned int r;
3618                 /*
3619                  * Peer is expected to wait our response and we will skip the
3620                  * listen phase. Add some randomness to the wait time here to
3621                  * make it less likely to hit cases where we could end up in
3622                  * sync with peer not listening.
3623                  */
3624                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3625                         r = 0;
3626                 timeout += r % 100000;
3627         }
3628         p2p_set_timeout(p2p, 0, timeout);
3629 }
3630
3631
3632 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3633 {
3634         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3635                 success);
3636         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3637                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3638                 return;
3639         }
3640         p2p_set_state(p2p, P2P_CONNECT);
3641         p2p_set_timeout(p2p, 0, 500000);
3642 }
3643
3644
3645 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3646                                        const u8 *addr)
3647 {
3648         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3649         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3650                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3651                 return;
3652         }
3653
3654         if (success) {
3655                 struct p2p_device *dev;
3656                 dev = p2p_get_device(p2p, addr);
3657                 if (dev &&
3658                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3659                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3660         }
3661
3662         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3663                 p2p_continue_find(p2p);
3664 }
3665
3666
3667 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3668                                enum p2p_send_action_result result)
3669 {
3670         struct p2p_device *dev;
3671
3672         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3673         if (result == P2P_SEND_ACTION_FAILED) {
3674                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3675                 p2p_go_neg_failed(p2p, -1);
3676                 return;
3677         }
3678
3679         dev = p2p->go_neg_peer;
3680
3681         if (result == P2P_SEND_ACTION_NO_ACK) {
3682                 /*
3683                  * Retry GO Negotiation Confirmation
3684                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3685                  * ACK for confirmation.
3686                  */
3687                 if (dev && dev->go_neg_conf &&
3688                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3689                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3690                                 dev->go_neg_conf_sent);
3691                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3692                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3693                                             dev->info.p2p_device_addr,
3694                                             p2p->cfg->dev_addr,
3695                                             dev->info.p2p_device_addr,
3696                                             wpabuf_head(dev->go_neg_conf),
3697                                             wpabuf_len(dev->go_neg_conf), 0) >=
3698                             0) {
3699                                 dev->go_neg_conf_sent++;
3700                                 return;
3701                         }
3702                         p2p_dbg(p2p, "Failed to re-send Action frame");
3703
3704                         /*
3705                          * Continue with the assumption that the first attempt
3706                          * went through and just the ACK frame was lost.
3707                          */
3708                 }
3709
3710                 /*
3711                  * It looks like the TX status for GO Negotiation Confirm is
3712                  * often showing failure even when the peer has actually
3713                  * received the frame. Since the peer may change channels
3714                  * immediately after having received the frame, we may not see
3715                  * an Ack for retries, so just dropping a single frame may
3716                  * trigger this. To allow the group formation to succeed if the
3717                  * peer did indeed receive the frame, continue regardless of
3718                  * the TX status.
3719                  */
3720                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3721         }
3722
3723         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3724
3725         if (dev == NULL)
3726                 return;
3727
3728         p2p_go_complete(p2p, dev);
3729 }
3730
3731
3732 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3733                         const u8 *src, const u8 *bssid,
3734                         enum p2p_send_action_result result)
3735 {
3736         enum p2p_pending_action_state state;
3737         int success;
3738
3739         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3740                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3741                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3742                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3743         success = result == P2P_SEND_ACTION_SUCCESS;
3744         state = p2p->pending_action_state;
3745         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3746         switch (state) {
3747         case P2P_NO_PENDING_ACTION:
3748                 if (p2p->send_action_in_progress) {
3749                         p2p->send_action_in_progress = 0;
3750                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3751                 }
3752                 break;
3753         case P2P_PENDING_GO_NEG_REQUEST:
3754                 p2p_go_neg_req_cb(p2p, success);
3755                 break;
3756         case P2P_PENDING_GO_NEG_RESPONSE:
3757                 p2p_go_neg_resp_cb(p2p, success);
3758                 break;
3759         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3760                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3761                 break;
3762         case P2P_PENDING_GO_NEG_CONFIRM:
3763                 p2p_go_neg_conf_cb(p2p, result);
3764                 break;
3765         case P2P_PENDING_SD:
3766                 p2p_sd_cb(p2p, success);
3767                 break;
3768         case P2P_PENDING_PD:
3769                 p2p_prov_disc_cb(p2p, success);
3770                 break;
3771         case P2P_PENDING_PD_RESPONSE:
3772                 p2p_prov_disc_resp_cb(p2p, success);
3773                 break;
3774         case P2P_PENDING_INVITATION_REQUEST:
3775                 p2p_invitation_req_cb(p2p, success);
3776                 break;
3777         case P2P_PENDING_INVITATION_RESPONSE:
3778                 p2p_invitation_resp_cb(p2p, success);
3779                 break;
3780         case P2P_PENDING_DEV_DISC_REQUEST:
3781                 p2p_dev_disc_req_cb(p2p, success);
3782                 break;
3783         case P2P_PENDING_DEV_DISC_RESPONSE:
3784                 p2p_dev_disc_resp_cb(p2p, success);
3785                 break;
3786         case P2P_PENDING_GO_DISC_REQ:
3787                 p2p_go_disc_req_cb(p2p, success);
3788                 break;
3789         }
3790 }
3791
3792
3793 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3794                    unsigned int duration)
3795 {
3796         if (freq == p2p->pending_client_disc_freq) {
3797                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3798                 p2p->pending_client_disc_freq = 0;
3799                 return;
3800         }
3801
3802         if (freq != p2p->pending_listen_freq) {
3803                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3804                         freq, duration, p2p->pending_listen_freq);
3805                 return;
3806         }
3807
3808         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3809                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3810                 p2p->pending_listen_freq);
3811         p2p->in_listen = 1;
3812         p2p->drv_in_listen = freq;
3813         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3814                 /*
3815                  * Add 20 msec extra wait to avoid race condition with driver
3816                  * remain-on-channel end event, i.e., give driver more time to
3817                  * complete the operation before our timeout expires.
3818                  */
3819                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3820                                 p2p->pending_listen_usec + 20000);
3821         }
3822
3823         p2p->pending_listen_freq = 0;
3824 }
3825
3826
3827 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3828 {
3829         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3830         p2p->drv_in_listen = 0;
3831         if (p2p->in_listen)
3832                 return 0; /* Internal timeout will trigger the next step */
3833
3834         if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer &&
3835             p2p->pending_listen_freq) {
3836                 /*
3837                  * Better wait a bit if the driver is unable to start
3838                  * offchannel operation for some reason to continue with
3839                  * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions.
3840                  */
3841                 p2p_dbg(p2p,
3842                         "Listen operation did not seem to start - delay idle phase to avoid busy loop");
3843                 p2p_set_timeout(p2p, 0, 100000);
3844                 return 1;
3845         }
3846
3847         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3848                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3849                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3850                         p2p_go_neg_failed(p2p, -1);
3851                         return 0;
3852                 }
3853
3854                 p2p_set_state(p2p, P2P_CONNECT);
3855                 p2p_connect_send(p2p, p2p->go_neg_peer);
3856                 return 1;
3857         } else if (p2p->state == P2P_SEARCH) {
3858                 if (p2p->p2p_scan_running) {
3859                          /*
3860                           * Search is already in progress. This can happen if
3861                           * an Action frame RX is reported immediately after
3862                           * the end of a remain-on-channel operation and the
3863                           * response frame to that is sent using an offchannel
3864                           * operation while in p2p_find. Avoid an attempt to
3865                           * restart a scan here.
3866                           */
3867                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3868                         return 1;
3869                 }
3870                 if (p2p->pending_listen_freq) {
3871                         /*
3872                          * Better wait a bit if the driver is unable to start
3873                          * offchannel operation for some reason. p2p_search()
3874                          * will be started from internal timeout.
3875                          */
3876                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3877                         p2p_set_timeout(p2p, 0, 100000);
3878                         return 1;
3879                 }
3880                 if (p2p->search_delay) {
3881                         p2p_dbg(p2p, "Delay search operation by %u ms",
3882                                 p2p->search_delay);
3883                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3884                                         (p2p->search_delay % 1000) * 1000);
3885                         return 1;
3886                 }
3887                 p2p_search(p2p);
3888                 return 1;
3889         }
3890
3891         return 0;
3892 }
3893
3894
3895 static void p2p_timeout_connect(struct p2p_data *p2p)
3896 {
3897         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3898         if (p2p->go_neg_peer &&
3899             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3900                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3901                 p2p_go_neg_failed(p2p, -1);
3902                 return;
3903         }
3904         if (p2p->go_neg_peer &&
3905             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3906             p2p->go_neg_peer->connect_reqs < 120) {
3907                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3908                 p2p_connect_send(p2p, p2p->go_neg_peer);
3909                 return;
3910         }
3911         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3912                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3913                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3914                 p2p_set_timeout(p2p, 0, 30000);
3915                 return;
3916         }
3917         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3918         p2p_listen_in_find(p2p, 0);
3919 }
3920
3921
3922 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3923 {
3924         if (p2p->go_neg_peer) {
3925                 if (p2p->drv_in_listen) {
3926                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3927                         return;
3928                 }
3929
3930                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3931                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3932                         p2p_go_neg_failed(p2p, -1);
3933                         return;
3934                 }
3935
3936                 p2p_set_state(p2p, P2P_CONNECT);
3937                 p2p_connect_send(p2p, p2p->go_neg_peer);
3938         } else
3939                 p2p_set_state(p2p, P2P_IDLE);
3940 }
3941
3942
3943 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3944 {
3945         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3946
3947         if (p2p->cfg->is_concurrent_session_active &&
3948             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3949                 p2p_set_timeout(p2p, 0, 500000);
3950         else
3951                 p2p_set_timeout(p2p, 0, 200000);
3952 }
3953
3954
3955 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3956 {
3957         struct p2p_device *dev = p2p->go_neg_peer;
3958
3959         if (dev == NULL) {
3960                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3961                 return;
3962         }
3963
3964         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3965         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3966         p2p_listen_in_find(p2p, 0);
3967 }
3968
3969
3970 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3971 {
3972         p2p_dbg(p2p, "Service Discovery Query timeout");
3973         if (p2p->sd_peer) {
3974                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3975                 p2p->sd_peer = NULL;
3976         }
3977         p2p_continue_find(p2p);
3978 }
3979
3980
3981 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3982 {
3983         p2p_dbg(p2p, "Provision Discovery Request timeout");
3984         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3985         p2p_continue_find(p2p);
3986 }
3987
3988
3989 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3990 {
3991         u32 adv_id = 0;
3992         u8 *adv_mac = NULL;
3993
3994         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3995
3996         /*
3997          * For user initiated PD requests that we have not gotten any responses
3998          * for while in IDLE state, we retry them a couple of times before
3999          * giving up.
4000          */
4001         if (!p2p->user_initiated_pd)
4002                 return;
4003
4004         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4005
4006         if (p2p->pd_retries) {
4007                 p2p->pd_retries--;
4008                 p2p_retry_pd(p2p);
4009         } else {
4010                 struct p2p_device *dev;
4011                 int for_join = 0;
4012
4013                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4014                         if (os_memcmp(p2p->pending_pd_devaddr,
4015                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
4016                                 continue;
4017                         if (dev->req_config_methods &&
4018                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
4019                                 for_join = 1;
4020                 }
4021
4022                 if (p2p->p2ps_prov) {
4023                         adv_id = p2p->p2ps_prov->adv_id;
4024                         adv_mac = p2p->p2ps_prov->adv_mac;
4025                 }
4026
4027                 if (p2p->cfg->prov_disc_fail)
4028                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4029                                                  p2p->pending_pd_devaddr,
4030                                                  for_join ?
4031                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
4032                                                  P2P_PROV_DISC_TIMEOUT,
4033                                                  adv_id, adv_mac, NULL);
4034                 p2p_reset_pending_pd(p2p);
4035         }
4036 }
4037
4038
4039 static void p2p_timeout_invite(struct p2p_data *p2p)
4040 {
4041         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4042         p2p_set_state(p2p, P2P_INVITE_LISTEN);
4043         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4044                 /*
4045                  * Better remain on operating channel instead of listen channel
4046                  * when running a group.
4047                  */
4048                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4049                 p2p_set_timeout(p2p, 0, 100000);
4050                 return;
4051         }
4052         p2p_listen_in_find(p2p, 0);
4053 }
4054
4055
4056 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4057 {
4058         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4059                 p2p_set_state(p2p, P2P_INVITE);
4060                 p2p_invite_send(p2p, p2p->invite_peer,
4061                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4062         } else {
4063                 if (p2p->invite_peer) {
4064                         p2p_dbg(p2p, "Invitation Request retry limit reached");
4065                         if (p2p->cfg->invitation_result)
4066                                 p2p->cfg->invitation_result(
4067                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
4068                                         p2p->invite_peer->info.p2p_device_addr,
4069                                         0, 0);
4070                 }
4071                 p2p_set_state(p2p, P2P_IDLE);
4072         }
4073 }
4074
4075
4076 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4077 {
4078         struct p2p_data *p2p = eloop_ctx;
4079
4080         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4081
4082         p2p->in_listen = 0;
4083         if (p2p->drv_in_listen) {
4084                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4085                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4086         }
4087
4088         switch (p2p->state) {
4089         case P2P_IDLE:
4090                 /* Check if we timed out waiting for PD req */
4091                 if (p2p->pending_action_state == P2P_PENDING_PD)
4092                         p2p_timeout_prov_disc_req(p2p);
4093                 break;
4094         case P2P_SEARCH:
4095                 /* Check if we timed out waiting for PD req */
4096                 if (p2p->pending_action_state == P2P_PENDING_PD)
4097                         p2p_timeout_prov_disc_req(p2p);
4098                 if (p2p->search_delay && !p2p->in_search_delay) {
4099                         p2p_dbg(p2p, "Delay search operation by %u ms",
4100                                 p2p->search_delay);
4101                         p2p->in_search_delay = 1;
4102                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4103                                         (p2p->search_delay % 1000) * 1000);
4104                         break;
4105                 }
4106                 p2p->in_search_delay = 0;
4107                 p2p_search(p2p);
4108                 break;
4109         case P2P_CONNECT:
4110                 p2p_timeout_connect(p2p);
4111                 break;
4112         case P2P_CONNECT_LISTEN:
4113                 p2p_timeout_connect_listen(p2p);
4114                 break;
4115         case P2P_GO_NEG:
4116                 break;
4117         case P2P_LISTEN_ONLY:
4118                 /* Check if we timed out waiting for PD req */
4119                 if (p2p->pending_action_state == P2P_PENDING_PD)
4120                         p2p_timeout_prov_disc_req(p2p);
4121
4122                 if (p2p->ext_listen_only) {
4123                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4124                         p2p->ext_listen_only = 0;
4125                         p2p_set_state(p2p, P2P_IDLE);
4126                 }
4127                 break;
4128         case P2P_WAIT_PEER_CONNECT:
4129                 p2p_timeout_wait_peer_connect(p2p);
4130                 break;
4131         case P2P_WAIT_PEER_IDLE:
4132                 p2p_timeout_wait_peer_idle(p2p);
4133                 break;
4134         case P2P_SD_DURING_FIND:
4135                 p2p_timeout_sd_during_find(p2p);
4136                 break;
4137         case P2P_PROVISIONING:
4138                 break;
4139         case P2P_PD_DURING_FIND:
4140                 p2p_timeout_prov_disc_during_find(p2p);
4141                 break;
4142         case P2P_INVITE:
4143                 p2p_timeout_invite(p2p);
4144                 break;
4145         case P2P_INVITE_LISTEN:
4146                 p2p_timeout_invite_listen(p2p);
4147                 break;
4148         }
4149 }
4150
4151
4152 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4153 {
4154         struct p2p_device *dev;
4155
4156         dev = p2p_get_device(p2p, peer_addr);
4157         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4158                 MACSTR, MAC2STR(peer_addr));
4159         if (dev == NULL) {
4160                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4161                 return -1;
4162         }
4163         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4164         dev->flags |= P2P_DEV_USER_REJECTED;
4165         return 0;
4166 }
4167
4168
4169 const char * p2p_wps_method_text(enum p2p_wps_method method)
4170 {
4171         switch (method) {
4172         case WPS_NOT_READY:
4173                 return "not-ready";
4174         case WPS_PIN_DISPLAY:
4175                 return "Display";
4176         case WPS_PIN_KEYPAD:
4177                 return "Keypad";
4178         case WPS_PBC:
4179                 return "PBC";
4180         case WPS_NFC:
4181                 return "NFC";
4182         case WPS_P2PS:
4183                 return "P2PS";
4184         }
4185
4186         return "??";
4187 }
4188
4189
4190 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4191 {
4192         switch (go_state) {
4193         case UNKNOWN_GO:
4194                 return "unknown";
4195         case LOCAL_GO:
4196                 return "local";
4197         case  REMOTE_GO:
4198                 return "remote";
4199         }
4200
4201         return "??";
4202 }
4203
4204
4205 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4206                                                const u8 *addr, int next)
4207 {
4208         struct p2p_device *dev;
4209
4210         if (addr)
4211                 dev = p2p_get_device(p2p, addr);
4212         else
4213                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4214
4215         if (dev && next) {
4216                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4217                 if (&dev->list == &p2p->devices)
4218                         dev = NULL;
4219         }
4220
4221         if (dev == NULL)
4222                 return NULL;
4223
4224         return &dev->info;
4225 }
4226
4227
4228 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4229                           char *buf, size_t buflen)
4230 {
4231         struct p2p_device *dev;
4232         int res;
4233         char *pos, *end;
4234         struct os_reltime now;
4235
4236         if (info == NULL)
4237                 return -1;
4238
4239         dev = (struct p2p_device *) (((u8 *) info) -
4240                                      offsetof(struct p2p_device, info));
4241
4242         pos = buf;
4243         end = buf + buflen;
4244
4245         os_get_reltime(&now);
4246         res = os_snprintf(pos, end - pos,
4247                           "age=%d\n"
4248                           "listen_freq=%d\n"
4249                           "wps_method=%s\n"
4250                           "interface_addr=" MACSTR "\n"
4251                           "member_in_go_dev=" MACSTR "\n"
4252                           "member_in_go_iface=" MACSTR "\n"
4253                           "go_neg_req_sent=%d\n"
4254                           "go_state=%s\n"
4255                           "dialog_token=%u\n"
4256                           "intended_addr=" MACSTR "\n"
4257                           "country=%c%c\n"
4258                           "oper_freq=%d\n"
4259                           "req_config_methods=0x%x\n"
4260                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4261                           "status=%d\n"
4262                           "invitation_reqs=%u\n",
4263                           (int) (now.sec - dev->last_seen.sec),
4264                           dev->listen_freq,
4265                           p2p_wps_method_text(dev->wps_method),
4266                           MAC2STR(dev->interface_addr),
4267                           MAC2STR(dev->member_in_go_dev),
4268                           MAC2STR(dev->member_in_go_iface),
4269                           dev->go_neg_req_sent,
4270                           p2p_go_state_text(dev->go_state),
4271                           dev->dialog_token,
4272                           MAC2STR(dev->intended_addr),
4273                           dev->country[0] ? dev->country[0] : '_',
4274                           dev->country[1] ? dev->country[1] : '_',
4275                           dev->oper_freq,
4276                           dev->req_config_methods,
4277                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4278                           "[PROBE_REQ_ONLY]" : "",
4279                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4280                           dev->flags & P2P_DEV_NOT_YET_READY ?
4281                           "[NOT_YET_READY]" : "",
4282                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4283                           "[PD_PEER_DISPLAY]" : "",
4284                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4285                           "[PD_PEER_KEYPAD]" : "",
4286                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4287                           "[PD_PEER_P2PS]" : "",
4288                           dev->flags & P2P_DEV_USER_REJECTED ?
4289                           "[USER_REJECTED]" : "",
4290                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4291                           "[PEER_WAITING_RESPONSE]" : "",
4292                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4293                           "[PREFER_PERSISTENT_GROUP]" : "",
4294                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4295                           "[WAIT_GO_NEG_RESPONSE]" : "",
4296                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4297                           "[WAIT_GO_NEG_CONFIRM]" : "",
4298                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4299                           "[GROUP_CLIENT_ONLY]" : "",
4300                           dev->flags & P2P_DEV_FORCE_FREQ ?
4301                           "[FORCE_FREQ]" : "",
4302                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4303                           "[PD_FOR_JOIN]" : "",
4304                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4305                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4306                           dev->status,
4307                           dev->invitation_reqs);
4308         if (os_snprintf_error(end - pos, res))
4309                 return pos - buf;
4310         pos += res;
4311
4312         if (dev->ext_listen_period) {
4313                 res = os_snprintf(pos, end - pos,
4314                                   "ext_listen_period=%u\n"
4315                                   "ext_listen_interval=%u\n",
4316                                   dev->ext_listen_period,
4317                                   dev->ext_listen_interval);
4318                 if (os_snprintf_error(end - pos, res))
4319                         return pos - buf;
4320                 pos += res;
4321         }
4322
4323         if (dev->oper_ssid_len) {
4324                 res = os_snprintf(pos, end - pos,
4325                                   "oper_ssid=%s\n",
4326                                   wpa_ssid_txt(dev->oper_ssid,
4327                                                dev->oper_ssid_len));
4328                 if (os_snprintf_error(end - pos, res))
4329                         return pos - buf;
4330                 pos += res;
4331         }
4332
4333 #ifdef CONFIG_WIFI_DISPLAY
4334         if (dev->info.wfd_subelems) {
4335                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4336                 if (os_snprintf_error(end - pos, res))
4337                         return pos - buf;
4338                 pos += res;
4339
4340                 pos += wpa_snprintf_hex(pos, end - pos,
4341                                         wpabuf_head(dev->info.wfd_subelems),
4342                                         wpabuf_len(dev->info.wfd_subelems));
4343
4344                 res = os_snprintf(pos, end - pos, "\n");
4345                 if (os_snprintf_error(end - pos, res))
4346                         return pos - buf;
4347                 pos += res;
4348         }
4349 #endif /* CONFIG_WIFI_DISPLAY */
4350
4351         return pos - buf;
4352 }
4353
4354
4355 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4356 {
4357         return p2p_get_device(p2p, addr) != NULL;
4358 }
4359
4360
4361 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4362 {
4363         if (enabled) {
4364                 p2p_dbg(p2p, "Client discoverability enabled");
4365                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4366         } else {
4367                 p2p_dbg(p2p, "Client discoverability disabled");
4368                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4369         }
4370 }
4371
4372
4373 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4374                                               u32 duration2, u32 interval2)
4375 {
4376         struct wpabuf *req;
4377         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4378         u8 *len;
4379
4380         req = wpabuf_alloc(100);
4381         if (req == NULL)
4382                 return NULL;
4383
4384         if (duration1 || interval1) {
4385                 os_memset(&desc1, 0, sizeof(desc1));
4386                 desc1.count_type = 1;
4387                 desc1.duration = duration1;
4388                 desc1.interval = interval1;
4389                 ptr1 = &desc1;
4390
4391                 if (duration2 || interval2) {
4392                         os_memset(&desc2, 0, sizeof(desc2));
4393                         desc2.count_type = 2;
4394                         desc2.duration = duration2;
4395                         desc2.interval = interval2;
4396                         ptr2 = &desc2;
4397                 }
4398         }
4399
4400         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4401         len = p2p_buf_add_ie_hdr(req);
4402         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4403         p2p_buf_update_ie_hdr(req, len);
4404
4405         return req;
4406 }
4407
4408
4409 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4410                      const u8 *own_interface_addr, unsigned int freq,
4411                      u32 duration1, u32 interval1, u32 duration2,
4412                      u32 interval2)
4413 {
4414         struct wpabuf *req;
4415
4416         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4417                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4418                 "dur2=%u int2=%u",
4419                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4420                 freq, duration1, interval1, duration2, interval2);
4421
4422         req = p2p_build_presence_req(duration1, interval1, duration2,
4423                                      interval2);
4424         if (req == NULL)
4425                 return -1;
4426
4427         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4428         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4429                             go_interface_addr,
4430                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4431                 p2p_dbg(p2p, "Failed to send Action frame");
4432         }
4433         wpabuf_free(req);
4434
4435         return 0;
4436 }
4437
4438
4439 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4440                                                size_t noa_len, u8 dialog_token)
4441 {
4442         struct wpabuf *resp;
4443         u8 *len;
4444
4445         resp = wpabuf_alloc(100 + noa_len);
4446         if (resp == NULL)
4447                 return NULL;
4448
4449         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4450         len = p2p_buf_add_ie_hdr(resp);
4451         p2p_buf_add_status(resp, status);
4452         if (noa) {
4453                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4454                 wpabuf_put_le16(resp, noa_len);
4455                 wpabuf_put_data(resp, noa, noa_len);
4456         } else
4457                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4458         p2p_buf_update_ie_hdr(resp, len);
4459
4460         return resp;
4461 }
4462
4463
4464 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4465                                      const u8 *sa, const u8 *data, size_t len,
4466                                      int rx_freq)
4467 {
4468         struct p2p_message msg;
4469         u8 status;
4470         struct wpabuf *resp;
4471         size_t g;
4472         struct p2p_group *group = NULL;
4473         int parsed = 0;
4474         u8 noa[50];
4475         int noa_len;
4476
4477         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4478
4479         for (g = 0; g < p2p->num_groups; g++) {
4480                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4481                               ETH_ALEN) == 0) {
4482                         group = p2p->groups[g];
4483                         break;
4484                 }
4485         }
4486         if (group == NULL) {
4487                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4488                         MACSTR, MAC2STR(da));
4489                 return;
4490         }
4491
4492         if (p2p_parse(data, len, &msg) < 0) {
4493                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4494                 status = P2P_SC_FAIL_INVALID_PARAMS;
4495                 goto fail;
4496         }
4497         parsed = 1;
4498
4499         if (msg.noa == NULL) {
4500                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4501                 status = P2P_SC_FAIL_INVALID_PARAMS;
4502                 goto fail;
4503         }
4504
4505         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4506
4507 fail:
4508         if (p2p->cfg->get_noa)
4509                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4510                                             sizeof(noa));
4511         else
4512                 noa_len = -1;
4513         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4514                                        noa_len > 0 ? noa_len : 0,
4515                                        msg.dialog_token);
4516         if (parsed)
4517                 p2p_parse_free(&msg);
4518         if (resp == NULL)
4519                 return;
4520
4521         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4522         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4523                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4524                 p2p_dbg(p2p, "Failed to send Action frame");
4525         }
4526         wpabuf_free(resp);
4527 }
4528
4529
4530 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4531                                       const u8 *sa, const u8 *data, size_t len)
4532 {
4533         struct p2p_message msg;
4534
4535         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4536
4537         if (p2p_parse(data, len, &msg) < 0) {
4538                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4539                 return;
4540         }
4541
4542         if (msg.status == NULL || msg.noa == NULL) {
4543                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4544                 p2p_parse_free(&msg);
4545                 return;
4546         }
4547
4548         if (p2p->cfg->presence_resp) {
4549                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4550                                         msg.noa, msg.noa_len);
4551         }
4552
4553         if (*msg.status) {
4554                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4555                         *msg.status);
4556                 p2p_parse_free(&msg);
4557                 return;
4558         }
4559
4560         p2p_dbg(p2p, "P2P Presence Request was accepted");
4561         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4562                     msg.noa, msg.noa_len);
4563         /* TODO: process NoA */
4564         p2p_parse_free(&msg);
4565 }
4566
4567
4568 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4569 {
4570         struct p2p_data *p2p = eloop_ctx;
4571
4572         if (p2p->ext_listen_interval) {
4573                 /* Schedule next extended listen timeout */
4574                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4575                                        p2p->ext_listen_interval_usec,
4576                                        p2p_ext_listen_timeout, p2p, NULL);
4577         }
4578
4579         if ((p2p->cfg->is_p2p_in_progress &&
4580              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4581             (p2p->pending_action_state == P2P_PENDING_PD &&
4582              p2p->pd_retries > 0)) {
4583                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4584                         p2p_state_txt(p2p->state));
4585                 return;
4586         }
4587
4588         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4589                 /*
4590                  * This should not really happen, but it looks like the Listen
4591                  * command may fail is something else (e.g., a scan) was
4592                  * running at an inconvenient time. As a workaround, allow new
4593                  * Extended Listen operation to be started.
4594                  */
4595                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4596                 p2p->ext_listen_only = 0;
4597                 p2p_set_state(p2p, P2P_IDLE);
4598         }
4599
4600         if (p2p->state != P2P_IDLE) {
4601                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4602                 return;
4603         }
4604
4605         p2p_dbg(p2p, "Extended Listen timeout");
4606         p2p->ext_listen_only = 1;
4607         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4608                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4609                 p2p->ext_listen_only = 0;
4610         }
4611 }
4612
4613
4614 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4615                    unsigned int interval)
4616 {
4617         if (period > 65535 || interval > 65535 || period > interval ||
4618             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4619                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4620                         period, interval);
4621                 return -1;
4622         }
4623
4624         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4625
4626         if (interval == 0) {
4627                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4628                 p2p->ext_listen_period = 0;
4629                 p2p->ext_listen_interval = 0;
4630                 return 0;
4631         }
4632
4633         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4634                 period, interval);
4635         p2p->ext_listen_period = period;
4636         p2p->ext_listen_interval = interval;
4637         p2p->ext_listen_interval_sec = interval / 1000;
4638         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4639
4640         eloop_register_timeout(p2p->ext_listen_interval_sec,
4641                                p2p->ext_listen_interval_usec,
4642                                p2p_ext_listen_timeout, p2p, NULL);
4643
4644         return 0;
4645 }
4646
4647
4648 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4649                       const u8 *ie, size_t ie_len)
4650 {
4651         struct p2p_message msg;
4652
4653         if (bssid == NULL || ie == NULL)
4654                 return;
4655
4656         os_memset(&msg, 0, sizeof(msg));
4657         if (p2p_parse_ies(ie, ie_len, &msg))
4658                 return;
4659         if (msg.minor_reason_code == NULL) {
4660                 p2p_parse_free(&msg);
4661                 return;
4662         }
4663
4664         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4665                 " reason_code=%u minor_reason_code=%u",
4666                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4667
4668         p2p_parse_free(&msg);
4669 }
4670
4671
4672 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4673                         const u8 *ie, size_t ie_len)
4674 {
4675         struct p2p_message msg;
4676
4677         if (bssid == NULL || ie == NULL)
4678                 return;
4679
4680         os_memset(&msg, 0, sizeof(msg));
4681         if (p2p_parse_ies(ie, ie_len, &msg))
4682                 return;
4683         if (msg.minor_reason_code == NULL) {
4684                 p2p_parse_free(&msg);
4685                 return;
4686         }
4687
4688         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4689                 " reason_code=%u minor_reason_code=%u",
4690                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4691
4692         p2p_parse_free(&msg);
4693 }
4694
4695
4696 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4697 {
4698         if (enabled) {
4699                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4700                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4701         } else {
4702                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4703                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4704         }
4705 }
4706
4707
4708 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4709                                  u8 *op_channel,
4710                                  struct wpa_freq_range_list *avoid_list,
4711                                  struct wpa_freq_range_list *disallow_list)
4712 {
4713         return p2p_channel_random_social(&p2p->channels, op_class, op_channel,
4714                                          avoid_list, disallow_list);
4715 }
4716
4717
4718 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4719                            u8 forced)
4720 {
4721         if (p2p_channel_to_freq(reg_class, channel) < 0)
4722                 return -1;
4723
4724         /*
4725          * Listen channel was set in configuration or set by control interface;
4726          * cannot override it.
4727          */
4728         if (p2p->cfg->channel_forced && forced == 0) {
4729                 p2p_dbg(p2p,
4730                         "Listen channel was previously configured - do not override based on optimization");
4731                 return -1;
4732         }
4733
4734         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4735                 reg_class, channel);
4736
4737         if (p2p->state == P2P_IDLE) {
4738                 p2p->cfg->reg_class = reg_class;
4739                 p2p->cfg->channel = channel;
4740                 p2p->cfg->channel_forced = forced;
4741         } else {
4742                 p2p_dbg(p2p, "Defer setting listen channel");
4743                 p2p->pending_reg_class = reg_class;
4744                 p2p->pending_channel = channel;
4745                 p2p->pending_channel_forced = forced;
4746         }
4747
4748         return 0;
4749 }
4750
4751
4752 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4753 {
4754         return p2p->cfg->channel;
4755 }
4756
4757
4758 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4759 {
4760         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4761         if (postfix == NULL) {
4762                 p2p->cfg->ssid_postfix_len = 0;
4763                 return 0;
4764         }
4765         if (len > sizeof(p2p->cfg->ssid_postfix))
4766                 return -1;
4767         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4768         p2p->cfg->ssid_postfix_len = len;
4769         return 0;
4770 }
4771
4772
4773 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4774                          int cfg_op_channel)
4775 {
4776         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4777                 return -1;
4778
4779         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4780                 op_reg_class, op_channel);
4781         p2p->cfg->op_reg_class = op_reg_class;
4782         p2p->cfg->op_channel = op_channel;
4783         p2p->cfg->cfg_op_channel = cfg_op_channel;
4784         return 0;
4785 }
4786
4787
4788 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4789                       const struct p2p_channel *pref_chan)
4790 {
4791         struct p2p_channel *n;
4792
4793         if (pref_chan) {
4794                 n = os_memdup(pref_chan,
4795                               num_pref_chan * sizeof(struct p2p_channel));
4796                 if (n == NULL)
4797                         return -1;
4798         } else
4799                 n = NULL;
4800
4801         os_free(p2p->cfg->pref_chan);
4802         p2p->cfg->pref_chan = n;
4803         p2p->cfg->num_pref_chan = num_pref_chan;
4804
4805         return 0;
4806 }
4807
4808
4809 int p2p_set_no_go_freq(struct p2p_data *p2p,
4810                        const struct wpa_freq_range_list *list)
4811 {
4812         struct wpa_freq_range *tmp;
4813
4814         if (list == NULL || list->num == 0) {
4815                 os_free(p2p->no_go_freq.range);
4816                 p2p->no_go_freq.range = NULL;
4817                 p2p->no_go_freq.num = 0;
4818                 return 0;
4819         }
4820
4821         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4822         if (tmp == NULL)
4823                 return -1;
4824         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4825         os_free(p2p->no_go_freq.range);
4826         p2p->no_go_freq.range = tmp;
4827         p2p->no_go_freq.num = list->num;
4828         p2p_dbg(p2p, "Updated no GO chan list");
4829
4830         return 0;
4831 }
4832
4833
4834 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4835                            u8 *iface_addr)
4836 {
4837         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4838         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4839                 return -1;
4840         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4841         return 0;
4842 }
4843
4844
4845 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4846                            u8 *dev_addr)
4847 {
4848         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4849         if (dev == NULL)
4850                 return -1;
4851         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4852         return 0;
4853 }
4854
4855
4856 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4857 {
4858         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4859         if (is_zero_ether_addr(p2p->peer_filter))
4860                 p2p_dbg(p2p, "Disable peer filter");
4861         else
4862                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4863                         MAC2STR(p2p->peer_filter));
4864 }
4865
4866
4867 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4868 {
4869         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4870         if (p2p->cross_connect == enabled)
4871                 return;
4872         p2p->cross_connect = enabled;
4873         /* TODO: may need to tear down any action group where we are GO(?) */
4874 }
4875
4876
4877 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4878 {
4879         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4880         if (dev == NULL)
4881                 return -1;
4882         if (dev->oper_freq <= 0)
4883                 return -1;
4884         return dev->oper_freq;
4885 }
4886
4887
4888 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4889 {
4890         p2p_dbg(p2p, "Intra BSS distribution %s",
4891                 enabled ? "enabled" : "disabled");
4892         p2p->cfg->p2p_intra_bss = enabled;
4893 }
4894
4895
4896 void p2p_update_channel_list(struct p2p_data *p2p,
4897                              const struct p2p_channels *chan,
4898                              const struct p2p_channels *cli_chan)
4899 {
4900         p2p_dbg(p2p, "Update channel list");
4901         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4902         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4903         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4904                   sizeof(struct p2p_channels));
4905         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4906 }
4907
4908
4909 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4910                     const u8 *src, const u8 *bssid, const u8 *buf,
4911                     size_t len, unsigned int wait_time)
4912 {
4913         int res, scheduled;
4914
4915         res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4916                                     buf, len, wait_time, &scheduled);
4917         if (res == 0 && scheduled && p2p->in_listen && freq > 0 &&
4918             (unsigned int) p2p->drv_in_listen != freq) {
4919                 p2p_dbg(p2p,
4920                         "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz",
4921                         p2p->drv_in_listen, freq);
4922                 p2p_stop_listen_for_freq(p2p, freq);
4923         }
4924         return res;
4925 }
4926
4927
4928 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4929                            int freq_overall)
4930 {
4931         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4932                 freq_24, freq_5, freq_overall);
4933         p2p->best_freq_24 = freq_24;
4934         p2p->best_freq_5 = freq_5;
4935         p2p->best_freq_overall = freq_overall;
4936 }
4937
4938
4939 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4940 {
4941         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4942         p2p->own_freq_preference = freq;
4943 }
4944
4945
4946 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4947 {
4948         if (p2p == NULL || p2p->go_neg_peer == NULL)
4949                 return NULL;
4950         return p2p->go_neg_peer->info.p2p_device_addr;
4951 }
4952
4953
4954 const struct p2p_peer_info *
4955 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4956 {
4957         struct p2p_device *dev;
4958
4959         if (addr) {
4960                 dev = p2p_get_device(p2p, addr);
4961                 if (!dev)
4962                         return NULL;
4963
4964                 if (!next) {
4965                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4966                                 return NULL;
4967
4968                         return &dev->info;
4969                 } else {
4970                         do {
4971                                 dev = dl_list_first(&dev->list,
4972                                                     struct p2p_device,
4973                                                     list);
4974                                 if (!dev || &dev->list == &p2p->devices)
4975                                         return NULL;
4976                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4977                 }
4978         } else {
4979                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4980                 if (!dev)
4981                         return NULL;
4982                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4983                         dev = dl_list_first(&dev->list,
4984                                             struct p2p_device,
4985                                             list);
4986                         if (!dev || &dev->list == &p2p->devices)
4987                                 return NULL;
4988                 }
4989         }
4990
4991         return &dev->info;
4992 }
4993
4994
4995 int p2p_in_progress(struct p2p_data *p2p)
4996 {
4997         if (p2p == NULL)
4998                 return 0;
4999         if (p2p->state == P2P_SEARCH)
5000                 return 2;
5001         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5002 }
5003
5004
5005 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5006                             u8 client_timeout)
5007 {
5008         if (p2p) {
5009                 p2p->go_timeout = go_timeout;
5010                 p2p->client_timeout = client_timeout;
5011         }
5012 }
5013
5014
5015 #ifdef CONFIG_WIFI_DISPLAY
5016
5017 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5018 {
5019         size_t g;
5020         struct p2p_group *group;
5021
5022         for (g = 0; g < p2p->num_groups; g++) {
5023                 group = p2p->groups[g];
5024                 p2p_group_force_beacon_update_ies(group);
5025         }
5026 }
5027
5028
5029 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5030 {
5031         wpabuf_free(p2p->wfd_ie_beacon);
5032         p2p->wfd_ie_beacon = ie;
5033         p2p_update_wfd_ie_groups(p2p);
5034         return 0;
5035 }
5036
5037
5038 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5039 {
5040         wpabuf_free(p2p->wfd_ie_probe_req);
5041         p2p->wfd_ie_probe_req = ie;
5042         return 0;
5043 }
5044
5045
5046 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5047 {
5048         wpabuf_free(p2p->wfd_ie_probe_resp);
5049         p2p->wfd_ie_probe_resp = ie;
5050         p2p_update_wfd_ie_groups(p2p);
5051         return 0;
5052 }
5053
5054
5055 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5056 {
5057         wpabuf_free(p2p->wfd_ie_assoc_req);
5058         p2p->wfd_ie_assoc_req = ie;
5059         return 0;
5060 }
5061
5062
5063 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5064 {
5065         wpabuf_free(p2p->wfd_ie_invitation);
5066         p2p->wfd_ie_invitation = ie;
5067         return 0;
5068 }
5069
5070
5071 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5072 {
5073         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5074         p2p->wfd_ie_prov_disc_req = ie;
5075         return 0;
5076 }
5077
5078
5079 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5080 {
5081         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5082         p2p->wfd_ie_prov_disc_resp = ie;
5083         return 0;
5084 }
5085
5086
5087 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5088 {
5089         wpabuf_free(p2p->wfd_ie_go_neg);
5090         p2p->wfd_ie_go_neg = ie;
5091         return 0;
5092 }
5093
5094
5095 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5096 {
5097         wpabuf_free(p2p->wfd_dev_info);
5098         if (elem) {
5099                 p2p->wfd_dev_info = wpabuf_dup(elem);
5100                 if (p2p->wfd_dev_info == NULL)
5101                         return -1;
5102         } else
5103                 p2p->wfd_dev_info = NULL;
5104
5105         return 0;
5106 }
5107
5108
5109 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5110 {
5111         wpabuf_free(p2p->wfd_r2_dev_info);
5112         if (elem) {
5113                 p2p->wfd_r2_dev_info = wpabuf_dup(elem);
5114                 if (p2p->wfd_r2_dev_info == NULL)
5115                         return -1;
5116         } else
5117                 p2p->wfd_r2_dev_info = NULL;
5118
5119         return 0;
5120 }
5121
5122
5123 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5124 {
5125         wpabuf_free(p2p->wfd_assoc_bssid);
5126         if (elem) {
5127                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5128                 if (p2p->wfd_assoc_bssid == NULL)
5129                         return -1;
5130         } else
5131                 p2p->wfd_assoc_bssid = NULL;
5132
5133         return 0;
5134 }
5135
5136
5137 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5138                                   const struct wpabuf *elem)
5139 {
5140         wpabuf_free(p2p->wfd_coupled_sink_info);
5141         if (elem) {
5142                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5143                 if (p2p->wfd_coupled_sink_info == NULL)
5144                         return -1;
5145         } else
5146                 p2p->wfd_coupled_sink_info = NULL;
5147
5148         return 0;
5149 }
5150
5151 #endif /* CONFIG_WIFI_DISPLAY */
5152
5153
5154 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5155                      int max_disc_tu)
5156 {
5157         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5158                 return -1;
5159
5160         p2p->min_disc_int = min_disc_int;
5161         p2p->max_disc_int = max_disc_int;
5162         p2p->max_disc_tu = max_disc_tu;
5163         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5164                 min_disc_int, max_disc_int, max_disc_tu);
5165
5166         return 0;
5167 }
5168
5169
5170 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5171 {
5172         va_list ap;
5173         char buf[500];
5174
5175         if (!p2p->cfg->debug_print)
5176                 return;
5177
5178         va_start(ap, fmt);
5179         vsnprintf(buf, sizeof(buf), fmt, ap);
5180         buf[sizeof(buf) - 1] = '\0';
5181         va_end(ap);
5182         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5183 }
5184
5185
5186 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5187 {
5188         va_list ap;
5189         char buf[500];
5190
5191         if (!p2p->cfg->debug_print)
5192                 return;
5193
5194         va_start(ap, fmt);
5195         vsnprintf(buf, sizeof(buf), fmt, ap);
5196         buf[sizeof(buf) - 1] = '\0';
5197         va_end(ap);
5198         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5199 }
5200
5201
5202 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5203 {
5204         va_list ap;
5205         char buf[500];
5206
5207         if (!p2p->cfg->debug_print)
5208                 return;
5209
5210         va_start(ap, fmt);
5211         vsnprintf(buf, sizeof(buf), fmt, ap);
5212         buf[sizeof(buf) - 1] = '\0';
5213         va_end(ap);
5214         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5215 }
5216
5217
5218 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5219                              void (*peer_callback)(struct p2p_peer_info *peer,
5220                                                    void *user_data),
5221                              void *user_data)
5222 {
5223         struct p2p_device *dev, *n;
5224
5225         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5226                 peer_callback(&dev->info, user_data);
5227         }
5228 }
5229
5230
5231 #ifdef CONFIG_WPS_NFC
5232
5233 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5234                                               int client_freq,
5235                                               const u8 *go_dev_addr,
5236                                               const u8 *ssid, size_t ssid_len)
5237 {
5238         struct wpabuf *buf;
5239         u8 op_class, channel;
5240         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5241
5242         buf = wpabuf_alloc(1000);
5243         if (buf == NULL)
5244                 return NULL;
5245
5246         op_class = p2p->cfg->reg_class;
5247         channel = p2p->cfg->channel;
5248
5249         p2p_buf_add_capability(buf, p2p->dev_capab &
5250                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5251         p2p_buf_add_device_info(buf, p2p, NULL);
5252
5253         if (p2p->num_groups > 0) {
5254                 int freq = p2p_group_get_freq(p2p->groups[0]);
5255                 role = P2P_GO_IN_A_GROUP;
5256                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5257                         p2p_dbg(p2p,
5258                                 "Unknown GO operating frequency %d MHz for NFC handover",
5259                                 freq);
5260                         wpabuf_free(buf);
5261                         return NULL;
5262                 }
5263         } else if (client_freq > 0) {
5264                 role = P2P_CLIENT_IN_A_GROUP;
5265                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5266                         p2p_dbg(p2p,
5267                                 "Unknown client operating frequency %d MHz for NFC handover",
5268                                 client_freq);
5269                         wpabuf_free(buf);
5270                         return NULL;
5271                 }
5272         }
5273
5274         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5275                                        channel, role);
5276
5277         if (p2p->num_groups > 0) {
5278                 /* Limit number of clients to avoid very long message */
5279                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5280                 p2p_group_buf_add_id(p2p->groups[0], buf);
5281         } else if (client_freq > 0 &&
5282                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5283                    ssid && ssid_len > 0) {
5284                 /*
5285                  * Add the optional P2P Group ID to indicate in which group this
5286                  * device is a P2P Client.
5287                  */
5288                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5289         }
5290
5291         return buf;
5292 }
5293
5294
5295 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5296                                            int client_freq,
5297                                            const u8 *go_dev_addr,
5298                                            const u8 *ssid, size_t ssid_len)
5299 {
5300         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5301                                       ssid_len);
5302 }
5303
5304
5305 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5306                                            int client_freq,
5307                                            const u8 *go_dev_addr,
5308                                            const u8 *ssid, size_t ssid_len)
5309 {
5310         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5311                                       ssid_len);
5312 }
5313
5314
5315 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5316                                         struct p2p_nfc_params *params)
5317 {
5318         struct p2p_message msg;
5319         struct p2p_device *dev;
5320         const u8 *p2p_dev_addr;
5321         int freq;
5322         enum p2p_role_indication role;
5323
5324         params->next_step = NO_ACTION;
5325
5326         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5327                                    params->p2p_attr, params->p2p_len, &msg)) {
5328                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5329                 p2p_parse_free(&msg);
5330                 return -1;
5331         }
5332
5333         if (msg.p2p_device_addr)
5334                 p2p_dev_addr = msg.p2p_device_addr;
5335         else if (msg.device_id)
5336                 p2p_dev_addr = msg.device_id;
5337         else {
5338                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5339                 p2p_parse_free(&msg);
5340                 return -1;
5341         }
5342
5343         if (msg.oob_dev_password) {
5344                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5345                           msg.oob_dev_password_len);
5346                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5347         }
5348
5349         dev = p2p_create_device(p2p, p2p_dev_addr);
5350         if (dev == NULL) {
5351                 p2p_parse_free(&msg);
5352                 return -1;
5353         }
5354
5355         params->peer = &dev->info;
5356
5357         os_get_reltime(&dev->last_seen);
5358         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5359         p2p_copy_wps_info(p2p, dev, 0, &msg);
5360
5361         if (!msg.oob_go_neg_channel) {
5362                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5363                 p2p_parse_free(&msg);
5364                 return -1;
5365         }
5366
5367         if (msg.oob_go_neg_channel[3] == 0 &&
5368             msg.oob_go_neg_channel[4] == 0)
5369                 freq = 0;
5370         else
5371                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5372                                            msg.oob_go_neg_channel[4]);
5373         if (freq < 0) {
5374                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5375                 p2p_parse_free(&msg);
5376                 return -1;
5377         }
5378         role = msg.oob_go_neg_channel[5];
5379
5380         if (role == P2P_GO_IN_A_GROUP) {
5381                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5382                 params->go_freq = freq;
5383         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5384                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5385                         freq);
5386                 params->go_freq = freq;
5387         } else
5388                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5389         dev->oob_go_neg_freq = freq;
5390
5391         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5392                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5393                                            p2p->cfg->channel);
5394                 if (freq < 0) {
5395                         p2p_dbg(p2p, "Own listen channel not known");
5396                         p2p_parse_free(&msg);
5397                         return -1;
5398                 }
5399                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5400                 dev->oob_go_neg_freq = freq;
5401         }
5402
5403         if (msg.group_id) {
5404                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5405                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5406                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5407                           params->go_ssid_len);
5408         }
5409
5410         if (dev->flags & P2P_DEV_USER_REJECTED) {
5411                 p2p_dbg(p2p, "Do not report rejected device");
5412                 p2p_parse_free(&msg);
5413                 return 0;
5414         }
5415
5416         if (!(dev->flags & P2P_DEV_REPORTED)) {
5417                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5418                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5419                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5420         }
5421         p2p_parse_free(&msg);
5422
5423         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5424                 params->next_step = BOTH_GO;
5425         else if (role == P2P_GO_IN_A_GROUP)
5426                 params->next_step = JOIN_GROUP;
5427         else if (role == P2P_CLIENT_IN_A_GROUP) {
5428                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5429                 params->next_step = PEER_CLIENT;
5430         } else if (p2p->num_groups > 0)
5431                 params->next_step = AUTH_JOIN;
5432         else if (params->sel)
5433                 params->next_step = INIT_GO_NEG;
5434         else
5435                 params->next_step = RESP_GO_NEG;
5436
5437         return 0;
5438 }
5439
5440
5441 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5442                                       int go_intent,
5443                                       const u8 *own_interface_addr)
5444 {
5445
5446         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5447         if (dev_pw_id == 0) {
5448                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5449                 return;
5450         }
5451
5452         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5453                 dev_pw_id);
5454
5455         p2p->go_intent = go_intent;
5456         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5457 }
5458
5459 #endif /* CONFIG_WPS_NFC */
5460
5461
5462 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5463 {
5464         if (len < 8 || len > 63)
5465                 return -1;
5466         p2p->cfg->passphrase_len = len;
5467         return 0;
5468 }
5469
5470
5471 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5472 {
5473         p2p->vendor_elem = vendor_elem;
5474 }
5475
5476
5477 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5478 {
5479         struct p2p_data *p2p = eloop_ctx;
5480
5481         p2p_dbg(p2p,
5482                 "Timeout on waiting peer to become ready for GO Negotiation");
5483         p2p_go_neg_failed(p2p, -1);
5484 }
5485
5486
5487 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5488                                 const unsigned int *pref_freq_list,
5489                                 unsigned int size)
5490 {
5491         unsigned int i;
5492
5493         if (size > P2P_MAX_PREF_CHANNELS)
5494                 size = P2P_MAX_PREF_CHANNELS;
5495         p2p->num_pref_freq = size;
5496         for (i = 0; i < size; i++) {
5497                 p2p->pref_freq_list[i] = pref_freq_list[i];
5498                 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5499                         i, p2p->pref_freq_list[i]);
5500         }
5501 }
5502
5503
5504 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
5505                                    u8 chan)
5506 {
5507         p2p->override_pref_op_class = op_class;
5508         p2p->override_pref_channel = chan;
5509 }
5510
5511
5512 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5513                                               unsigned int freq)
5514 {
5515         struct wpabuf *ies, *buf;
5516         u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5517         int ret;
5518
5519         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5520         if (!ies) {
5521                 wpa_printf(MSG_ERROR,
5522                            "CTRL: Failed to build Probe Response IEs");
5523                 return NULL;
5524         }
5525
5526         buf = wpabuf_alloc(200 + wpabuf_len(ies));
5527         if (!buf) {
5528                 wpabuf_free(ies);
5529                 return NULL;
5530         }
5531
5532         ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5533         wpabuf_free(ies);
5534         if (ret) {
5535                 wpabuf_free(buf);
5536                 return NULL;
5537         }
5538
5539         return buf;
5540 }