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         if (p2p->after_scan_tx) {
1070                 p2p->after_scan_tx_in_progress = 1;
1071                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1072                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1073                                       p2p->after_scan_tx->freq,
1074                                       p2p->after_scan_tx->dst,
1075                                       p2p->after_scan_tx->src,
1076                                       p2p->after_scan_tx->bssid,
1077                                       (u8 *) (p2p->after_scan_tx + 1),
1078                                       p2p->after_scan_tx->len,
1079                                       p2p->after_scan_tx->wait_time, NULL);
1080                 os_free(p2p->after_scan_tx);
1081                 p2p->after_scan_tx = NULL;
1082                 return 1;
1083         }
1084
1085         op = p2p->start_after_scan;
1086         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1087         switch (op) {
1088         case P2P_AFTER_SCAN_NOTHING:
1089                 break;
1090         case P2P_AFTER_SCAN_LISTEN:
1091                 p2p_dbg(p2p, "Start previously requested Listen state");
1092                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1093                            p2p->pending_listen_usec / 1000);
1094                 return 1;
1095         case P2P_AFTER_SCAN_CONNECT:
1096                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1097                         MAC2STR(p2p->after_scan_peer));
1098                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1099                 if (dev == NULL) {
1100                         p2p_dbg(p2p, "Peer not known anymore");
1101                         break;
1102                 }
1103                 p2p_connect_send(p2p, dev);
1104                 return 1;
1105         }
1106
1107         return 0;
1108 }
1109
1110
1111 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1112 {
1113         struct p2p_data *p2p = eloop_ctx;
1114         int running;
1115         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1116         running = p2p->p2p_scan_running;
1117         /* Make sure we recover from missed scan results callback */
1118         p2p->p2p_scan_running = 0;
1119
1120         if (running)
1121                 p2p_run_after_scan(p2p);
1122 }
1123
1124
1125 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1126 {
1127         p2p->num_req_dev_types = 0;
1128         os_free(p2p->req_dev_types);
1129         p2p->req_dev_types = NULL;
1130 }
1131
1132
1133 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1134 {
1135         u8 buf[SHA256_MAC_LEN];
1136         char str_buf[256];
1137         const u8 *adv_array;
1138         size_t i, adv_len;
1139
1140         if (!str || !hash)
1141                 return 0;
1142
1143         if (!str[0]) {
1144                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1145                 return 1;
1146         }
1147
1148         adv_array = (u8 *) str_buf;
1149         adv_len = os_strlen(str);
1150         if (adv_len >= sizeof(str_buf))
1151                 return 0;
1152
1153         for (i = 0; i < adv_len; i++) {
1154                 if (str[i] >= 'A' && str[i] <= 'Z')
1155                         str_buf[i] = str[i] - 'A' + 'a';
1156                 else
1157                         str_buf[i] = str[i];
1158         }
1159
1160         if (sha256_vector(1, &adv_array, &adv_len, buf))
1161                 return 0;
1162
1163         os_memcpy(hash, buf, P2PS_HASH_LEN);
1164         return 1;
1165 }
1166
1167
1168 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1169              enum p2p_discovery_type type,
1170              unsigned int num_req_dev_types, const u8 *req_dev_types,
1171              const u8 *dev_id, unsigned int search_delay,
1172              u8 seek_count, const char **seek, int freq)
1173 {
1174         int res;
1175         struct os_reltime start;
1176
1177         p2p_dbg(p2p, "Starting find (type=%d)", type);
1178         if (p2p->p2p_scan_running) {
1179                 p2p_dbg(p2p, "p2p_scan is already running");
1180         }
1181
1182         p2p_free_req_dev_types(p2p);
1183         if (req_dev_types && num_req_dev_types) {
1184                 p2p->req_dev_types = os_memdup(req_dev_types,
1185                                                num_req_dev_types *
1186                                                WPS_DEV_TYPE_LEN);
1187                 if (p2p->req_dev_types == NULL)
1188                         return -1;
1189                 p2p->num_req_dev_types = num_req_dev_types;
1190         }
1191
1192         if (dev_id) {
1193                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1194                 p2p->find_dev_id = p2p->find_dev_id_buf;
1195         } else
1196                 p2p->find_dev_id = NULL;
1197
1198         if (seek_count == 0 || !seek) {
1199                 /* Not an ASP search */
1200                 p2p->p2ps_seek = 0;
1201         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1202                 /*
1203                  * An empty seek string means no hash values, but still an ASP
1204                  * search.
1205                  */
1206                 p2p_dbg(p2p, "ASP search");
1207                 p2p->p2ps_seek_count = 0;
1208                 p2p->p2ps_seek = 1;
1209         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1210                 u8 buf[P2PS_HASH_LEN];
1211                 int i, count = 0;
1212
1213                 for (i = 0; i < seek_count; i++) {
1214                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1215                                 continue;
1216
1217                         p2p_dbg(p2p, "Seek service %s hash " MACSTR,
1218                                 seek[i], MAC2STR(buf));
1219                         os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN],
1220                                   buf, P2PS_HASH_LEN);
1221                         count++;
1222                 }
1223
1224                 p2p->p2ps_seek_count = count;
1225                 p2p->p2ps_seek = 1;
1226         } else {
1227                 p2p->p2ps_seek_count = 0;
1228                 p2p->p2ps_seek = 1;
1229         }
1230
1231         /* Special case to perform wildcard search */
1232         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1233                 p2p->p2ps_seek_count = 1;
1234                 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash,
1235                           P2PS_HASH_LEN);
1236         }
1237
1238         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1239         p2p_clear_timeout(p2p);
1240         if (p2p->pending_listen_freq) {
1241                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find");
1242                 p2p->pending_listen_freq = 0;
1243         }
1244         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1245         p2p->find_pending_full = 0;
1246         p2p->find_type = type;
1247         if (freq != 2412 && freq != 2437 && freq != 2462 && freq != 60480)
1248                 p2p->find_specified_freq = freq;
1249         else
1250                 p2p->find_specified_freq = 0;
1251         p2p_device_clear_reported(p2p);
1252         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
1253         p2p_set_state(p2p, P2P_SEARCH);
1254         p2p->search_delay = search_delay;
1255         p2p->in_search_delay = 0;
1256         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1257         p2p->last_p2p_find_timeout = timeout;
1258         if (timeout)
1259                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1260                                        p2p, NULL);
1261         os_get_reltime(&start);
1262         switch (type) {
1263         case P2P_FIND_START_WITH_FULL:
1264                 if (freq > 0) {
1265                         /*
1266                          * Start with the specified channel and then move to
1267                          * scans for social channels and this specific channel.
1268                          */
1269                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1270                                                  P2P_SCAN_SPECIFIC, freq,
1271                                                  p2p->num_req_dev_types,
1272                                                  p2p->req_dev_types, dev_id,
1273                                                  DEV_PW_DEFAULT);
1274                         break;
1275                 }
1276                 /* fall through */
1277         case P2P_FIND_PROGRESSIVE:
1278                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1279                                          p2p->num_req_dev_types,
1280                                          p2p->req_dev_types, dev_id,
1281                                          DEV_PW_DEFAULT);
1282                 break;
1283         case P2P_FIND_ONLY_SOCIAL:
1284                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1285                                          p2p->num_req_dev_types,
1286                                          p2p->req_dev_types, dev_id,
1287                                          DEV_PW_DEFAULT);
1288                 break;
1289         default:
1290                 return -1;
1291         }
1292
1293         if (!res)
1294                 p2p->find_start = start;
1295
1296         if (res != 0 && p2p->p2p_scan_running) {
1297                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1298                 /* wait for the previous p2p_scan to complete */
1299                 if (type == P2P_FIND_PROGRESSIVE ||
1300                     (type == P2P_FIND_START_WITH_FULL && freq == 0))
1301                         p2p->find_pending_full = 1;
1302                 res = 0; /* do not report failure */
1303         } else if (res != 0) {
1304                 p2p_dbg(p2p, "Failed to start p2p_scan");
1305                 p2p_set_state(p2p, P2P_IDLE);
1306                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1307         }
1308
1309         return res;
1310 }
1311
1312
1313 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1314 {
1315         p2p_dbg(p2p, "Stopping find");
1316         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1317         p2p_clear_timeout(p2p);
1318         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1319                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1320
1321         p2p->p2ps_seek_count = 0;
1322
1323         p2p_set_state(p2p, P2P_IDLE);
1324         p2p_free_req_dev_types(p2p);
1325         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1326         if (p2p->go_neg_peer)
1327                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1328         p2p->go_neg_peer = NULL;
1329         p2p->sd_peer = NULL;
1330         p2p->invite_peer = NULL;
1331         p2p_stop_listen_for_freq(p2p, freq);
1332         p2p->send_action_in_progress = 0;
1333 }
1334
1335
1336 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1337 {
1338         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1339                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1340                 return;
1341         }
1342         if (p2p->in_listen) {
1343                 p2p->in_listen = 0;
1344                 p2p_clear_timeout(p2p);
1345         }
1346         if (p2p->drv_in_listen) {
1347                 /*
1348                  * The driver may not deliver callback to p2p_listen_end()
1349                  * when the operation gets canceled, so clear the internal
1350                  * variable that is tracking driver state.
1351                  */
1352                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1353                 p2p->drv_in_listen = 0;
1354         }
1355         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1356 }
1357
1358
1359 void p2p_stop_listen(struct p2p_data *p2p)
1360 {
1361         if (p2p->state != P2P_LISTEN_ONLY) {
1362                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1363                 return;
1364         }
1365
1366         p2p_stop_listen_for_freq(p2p, 0);
1367         p2p_set_state(p2p, P2P_IDLE);
1368 }
1369
1370
1371 void p2p_stop_find(struct p2p_data *p2p)
1372 {
1373         p2p->pending_listen_freq = 0;
1374         p2p_stop_find_for_freq(p2p, 0);
1375 }
1376
1377
1378 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1379                                     unsigned int force_freq,
1380                                     unsigned int pref_freq, int go)
1381 {
1382         u8 op_class, op_channel;
1383         unsigned int freq = force_freq ? force_freq : pref_freq;
1384
1385         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1386                 force_freq, pref_freq, go);
1387         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1388                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1389                 return -1;
1390         }
1391
1392         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1393             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1394                                           op_channel))) {
1395                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1396                         freq, op_class, op_channel);
1397                 return -1;
1398         }
1399
1400         p2p->op_reg_class = op_class;
1401         p2p->op_channel = op_channel;
1402
1403         if (force_freq) {
1404                 p2p->channels.reg_classes = 1;
1405                 p2p->channels.reg_class[0].channels = 1;
1406                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1407                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1408         } else {
1409                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1410                           sizeof(struct p2p_channels));
1411         }
1412
1413         return 0;
1414 }
1415
1416
1417 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1418 {
1419         u8 op_class, op_channel;
1420         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1421         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1422         const int op_classes_vht[] = { 128, 0 };
1423
1424         p2p_dbg(p2p, "Prepare channel best");
1425
1426         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1427             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1428             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1429             == 0) {
1430                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1431                 p2p->op_reg_class = op_class;
1432                 p2p->op_channel = op_channel;
1433         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1434                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1435                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1436                    == 0) {
1437                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1438                 p2p->op_reg_class = op_class;
1439                 p2p->op_channel = op_channel;
1440         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1441                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1442                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1443                                        &op_channel) == 0) {
1444                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1445                 p2p->op_reg_class = op_class;
1446                 p2p->op_channel = op_channel;
1447         } else if (p2p->cfg->num_pref_chan > 0 &&
1448                    p2p_channels_includes(&p2p->cfg->channels,
1449                                          p2p->cfg->pref_chan[0].op_class,
1450                                          p2p->cfg->pref_chan[0].chan)) {
1451                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1452                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1453                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1454         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1455                                       &p2p->op_reg_class, &p2p->op_channel) ==
1456                    0) {
1457                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1458                         p2p->op_reg_class, p2p->op_channel);
1459         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1460                                       &p2p->op_reg_class, &p2p->op_channel) ==
1461                    0) {
1462                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1463                         p2p->op_reg_class, p2p->op_channel);
1464         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1465                                       &p2p->op_reg_class, &p2p->op_channel) ==
1466                    0) {
1467                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1468                         p2p->op_reg_class, p2p->op_channel);
1469         } else if (p2p_channels_includes(&p2p->cfg->channels,
1470                                          p2p->cfg->op_reg_class,
1471                                          p2p->cfg->op_channel)) {
1472                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1473                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1474                 p2p->op_channel = p2p->cfg->op_channel;
1475         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1476                                              &p2p->op_reg_class,
1477                                              &p2p->op_channel,
1478                                              NULL, NULL) == 0) {
1479                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1480                         p2p->op_reg_class, p2p->op_channel);
1481         } else {
1482                 /* Select any random available channel from the first available
1483                  * operating class */
1484                 p2p_channel_select(&p2p->cfg->channels, NULL,
1485                                    &p2p->op_reg_class,
1486                                    &p2p->op_channel);
1487                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1488                         p2p->op_channel, p2p->op_reg_class);
1489         }
1490
1491         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1492                   sizeof(struct p2p_channels));
1493 }
1494
1495
1496 /**
1497  * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD
1498  * @p2p: P2P module context from p2p_init()
1499  * @dev: Selected peer device
1500  * @force_freq: Forced frequency in MHz or 0 if not forced
1501  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1502  * @go: Whether the local end will be forced to be GO
1503  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1504  *
1505  * This function is used to do initial operating channel selection for GO
1506  * Negotiation prior to having received peer information or for P2PS PD
1507  * signalling. The selected channel may be further optimized in
1508  * p2p_reselect_channel() once the peer information is available.
1509  */
1510 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1511                         unsigned int force_freq, unsigned int pref_freq, int go)
1512 {
1513         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1514                 force_freq, pref_freq, go);
1515         if (force_freq || pref_freq) {
1516                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1517                     0)
1518                         return -1;
1519         } else {
1520                 p2p_prepare_channel_best(p2p);
1521         }
1522         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1523         if (go)
1524                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1525         else if (!force_freq)
1526                 p2p_channels_union_inplace(&p2p->channels,
1527                                            &p2p->cfg->cli_channels);
1528         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1529
1530         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1531                 p2p->op_reg_class, p2p->op_channel,
1532                 force_freq ? " (forced)" : "");
1533
1534         if (force_freq)
1535                 dev->flags |= P2P_DEV_FORCE_FREQ;
1536         else
1537                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1538
1539         return 0;
1540 }
1541
1542
1543 static void p2p_set_dev_persistent(struct p2p_device *dev,
1544                                    int persistent_group)
1545 {
1546         switch (persistent_group) {
1547         case 0:
1548                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1549                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1550                 break;
1551         case 1:
1552                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1553                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1554                 break;
1555         case 2:
1556                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1557                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1558                 break;
1559         }
1560 }
1561
1562
1563 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1564                 enum p2p_wps_method wps_method,
1565                 int go_intent, const u8 *own_interface_addr,
1566                 unsigned int force_freq, int persistent_group,
1567                 const u8 *force_ssid, size_t force_ssid_len,
1568                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1569 {
1570         struct p2p_device *dev;
1571
1572         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1573                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1574                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1575                 "oob_pw_id=%u",
1576                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1577                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1578
1579         dev = p2p_get_device(p2p, peer_addr);
1580         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1581                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1582                         MAC2STR(peer_addr));
1583                 return -1;
1584         }
1585
1586         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1587                                 go_intent == 15) < 0)
1588                 return -1;
1589
1590         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1591                 if (!(dev->info.dev_capab &
1592                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1593                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1594                                 " that is in a group and is not discoverable",
1595                                 MAC2STR(peer_addr));
1596                         return -1;
1597                 }
1598                 if (dev->oper_freq <= 0) {
1599                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1600                                 " with incomplete information",
1601                                 MAC2STR(peer_addr));
1602                         return -1;
1603                 }
1604
1605                 /*
1606                  * First, try to connect directly. If the peer does not
1607                  * acknowledge frames, assume it is sleeping and use device
1608                  * discoverability via the GO at that point.
1609                  */
1610         }
1611
1612         p2p->ssid_set = 0;
1613         if (force_ssid) {
1614                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1615                                   force_ssid, force_ssid_len);
1616                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1617                 p2p->ssid_len = force_ssid_len;
1618                 p2p->ssid_set = 1;
1619         }
1620
1621         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1622         dev->flags &= ~P2P_DEV_USER_REJECTED;
1623         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1624         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1625         if (pd_before_go_neg)
1626                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1627         else {
1628                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1629                 /*
1630                  * Assign dialog token and tie breaker here to use the same
1631                  * values in each retry within the same GO Negotiation exchange.
1632                  */
1633                 dev->dialog_token++;
1634                 if (dev->dialog_token == 0)
1635                         dev->dialog_token = 1;
1636                 dev->tie_breaker = p2p->next_tie_breaker;
1637                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1638         }
1639         dev->connect_reqs = 0;
1640         dev->go_neg_req_sent = 0;
1641         dev->go_state = UNKNOWN_GO;
1642         p2p_set_dev_persistent(dev, persistent_group);
1643         p2p->go_intent = go_intent;
1644         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1645
1646         if (p2p->state != P2P_IDLE)
1647                 p2p_stop_find(p2p);
1648
1649         if (p2p->after_scan_tx) {
1650                 /*
1651                  * We need to drop the pending frame to avoid issues with the
1652                  * new GO Negotiation, e.g., when the pending frame was from a
1653                  * previous attempt at starting a GO Negotiation.
1654                  */
1655                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1656                 os_free(p2p->after_scan_tx);
1657                 p2p->after_scan_tx = NULL;
1658         }
1659
1660         dev->wps_method = wps_method;
1661         dev->oob_pw_id = oob_pw_id;
1662         dev->status = P2P_SC_SUCCESS;
1663
1664         if (p2p->p2p_scan_running) {
1665                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1666                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1667                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1668                 return 0;
1669         }
1670         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1671
1672         return p2p_connect_send(p2p, dev);
1673 }
1674
1675
1676 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1677                   enum p2p_wps_method wps_method,
1678                   int go_intent, const u8 *own_interface_addr,
1679                   unsigned int force_freq, int persistent_group,
1680                   const u8 *force_ssid, size_t force_ssid_len,
1681                   unsigned int pref_freq, u16 oob_pw_id)
1682 {
1683         struct p2p_device *dev;
1684
1685         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1686                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1687                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1688                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1689                 wps_method, persistent_group, oob_pw_id);
1690
1691         dev = p2p_get_device(p2p, peer_addr);
1692         if (dev == NULL) {
1693                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1694                         MAC2STR(peer_addr));
1695                 return -1;
1696         }
1697
1698         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1699                                 15) < 0)
1700                 return -1;
1701
1702         p2p->ssid_set = 0;
1703         if (force_ssid) {
1704                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1705                                   force_ssid, force_ssid_len);
1706                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1707                 p2p->ssid_len = force_ssid_len;
1708                 p2p->ssid_set = 1;
1709         }
1710
1711         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1712         dev->flags &= ~P2P_DEV_USER_REJECTED;
1713         dev->go_neg_req_sent = 0;
1714         dev->go_state = UNKNOWN_GO;
1715         p2p_set_dev_persistent(dev, persistent_group);
1716         p2p->go_intent = go_intent;
1717         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1718
1719         dev->wps_method = wps_method;
1720         dev->oob_pw_id = oob_pw_id;
1721         dev->status = P2P_SC_SUCCESS;
1722
1723         return 0;
1724 }
1725
1726
1727 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1728                       struct p2p_device *dev, struct p2p_message *msg)
1729 {
1730         os_get_reltime(&dev->last_seen);
1731
1732         p2p_copy_wps_info(p2p, dev, 0, msg);
1733
1734         if (msg->listen_channel) {
1735                 int freq;
1736                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1737                                            msg->listen_channel[4]);
1738                 if (freq < 0) {
1739                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1740                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1741                                 msg->listen_channel[0],
1742                                 msg->listen_channel[1],
1743                                 msg->listen_channel[2],
1744                                 msg->listen_channel[3],
1745                                 msg->listen_channel[4]);
1746                 } else {
1747                         p2p_dbg(p2p, "Update peer " MACSTR
1748                                 " Listen channel: %u -> %u MHz",
1749                                 MAC2STR(dev->info.p2p_device_addr),
1750                                 dev->listen_freq, freq);
1751                         dev->listen_freq = freq;
1752                 }
1753         }
1754
1755         if (msg->wfd_subelems) {
1756                 wpabuf_free(dev->info.wfd_subelems);
1757                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1758         }
1759
1760         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1761                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1762                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1763         } else {
1764                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1765                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1766                         "listen_freq=%d",
1767                         MAC2STR(dev->info.p2p_device_addr),
1768                         dev->info.dev_capab, dev->info.group_capab,
1769                         dev->info.device_name, dev->listen_freq);
1770         }
1771
1772         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1773
1774         if (dev->flags & P2P_DEV_USER_REJECTED) {
1775                 p2p_dbg(p2p, "Do not report rejected device");
1776                 return;
1777         }
1778
1779         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1780                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1781         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1782 }
1783
1784
1785 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1786 {
1787         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1788         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1789         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1790                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1791         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1792 }
1793
1794
1795 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1796 {
1797         if (p2p->ssid_set) {
1798                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1799                 params->ssid_len = p2p->ssid_len;
1800         } else {
1801                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1802         }
1803         p2p->ssid_set = 0;
1804
1805         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1806         return 0;
1807 }
1808
1809
1810 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1811 {
1812         struct p2p_go_neg_results res;
1813         int go = peer->go_state == LOCAL_GO;
1814         struct p2p_channels intersection;
1815
1816         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1817                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1818
1819         os_memset(&res, 0, sizeof(res));
1820         res.role_go = go;
1821         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1822         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1823         res.wps_method = peer->wps_method;
1824         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1825                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1826                         res.persistent_group = 2;
1827                 else
1828                         res.persistent_group = 1;
1829         }
1830
1831         if (go) {
1832                 /* Setup AP mode for WPS provisioning */
1833                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1834                                                p2p->op_channel);
1835                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1836                 res.ssid_len = p2p->ssid_len;
1837                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1838         } else {
1839                 res.freq = peer->oper_freq;
1840                 if (p2p->ssid_len) {
1841                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1842                         res.ssid_len = p2p->ssid_len;
1843                 }
1844         }
1845
1846         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1847         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1848         p2p_channels_intersect(&p2p->channels, &peer->channels,
1849                                &intersection);
1850         if (go) {
1851                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1852                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1853                                   &intersection);
1854         }
1855
1856         p2p_channels_to_freqs(&intersection, res.freq_list,
1857                               P2P_MAX_CHANNELS);
1858
1859         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1860
1861         p2p_clear_timeout(p2p);
1862         p2p->ssid_set = 0;
1863         peer->go_neg_req_sent = 0;
1864         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1865         peer->wps_method = WPS_NOT_READY;
1866         peer->oob_pw_id = 0;
1867         wpabuf_free(peer->go_neg_conf);
1868         peer->go_neg_conf = NULL;
1869
1870         p2p_set_state(p2p, P2P_PROVISIONING);
1871         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1872 }
1873
1874
1875 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1876                               const u8 *data, size_t len, int rx_freq)
1877 {
1878         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1879         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1880
1881         if (len < 1)
1882                 return;
1883
1884         switch (data[0]) {
1885         case P2P_GO_NEG_REQ:
1886                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1887                 break;
1888         case P2P_GO_NEG_RESP:
1889                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1890                 break;
1891         case P2P_GO_NEG_CONF:
1892                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1893                 break;
1894         case P2P_INVITATION_REQ:
1895                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1896                                            rx_freq);
1897                 break;
1898         case P2P_INVITATION_RESP:
1899                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1900                 break;
1901         case P2P_PROV_DISC_REQ:
1902                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1903                 break;
1904         case P2P_PROV_DISC_RESP:
1905                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1906                 break;
1907         case P2P_DEV_DISC_REQ:
1908                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1909                 break;
1910         case P2P_DEV_DISC_RESP:
1911                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1912                 break;
1913         default:
1914                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1915                         data[0]);
1916                 break;
1917         }
1918 }
1919
1920
1921 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1922                                  const u8 *sa, const u8 *bssid, const u8 *data,
1923                                  size_t len, int freq)
1924 {
1925         if (len < 1)
1926                 return;
1927
1928         switch (data[0]) {
1929         case WLAN_PA_VENDOR_SPECIFIC:
1930                 data++;
1931                 len--;
1932                 if (len < 4)
1933                         return;
1934                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1935                         return;
1936
1937                 data += 4;
1938                 len -= 4;
1939
1940                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1941                 break;
1942         case WLAN_PA_GAS_INITIAL_REQ:
1943                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1944                 break;
1945         case WLAN_PA_GAS_INITIAL_RESP:
1946                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1947                 break;
1948         case WLAN_PA_GAS_COMEBACK_REQ:
1949                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1950                 break;
1951         case WLAN_PA_GAS_COMEBACK_RESP:
1952                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1953                 break;
1954         }
1955 }
1956
1957
1958 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1959                    const u8 *bssid, u8 category,
1960                    const u8 *data, size_t len, int freq)
1961 {
1962         if (category == WLAN_ACTION_PUBLIC) {
1963                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1964                 return;
1965         }
1966
1967         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1968                 return;
1969
1970         if (len < 4)
1971                 return;
1972
1973         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1974                 return;
1975         data += 4;
1976         len -= 4;
1977
1978         /* P2P action frame */
1979         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1980         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1981
1982         if (len < 1)
1983                 return;
1984         switch (data[0]) {
1985         case P2P_NOA:
1986                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1987                 /* TODO */
1988                 break;
1989         case P2P_PRESENCE_REQ:
1990                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1991                 break;
1992         case P2P_PRESENCE_RESP:
1993                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1994                 break;
1995         case P2P_GO_DISC_REQ:
1996                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1997                 break;
1998         default:
1999                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
2000                 break;
2001         }
2002 }
2003
2004
2005 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
2006 {
2007         struct p2p_data *p2p = eloop_ctx;
2008         if (p2p->go_neg_peer == NULL)
2009                 return;
2010         if (p2p->pending_listen_freq) {
2011                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
2012                 p2p->pending_listen_freq = 0;
2013         }
2014         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2015         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
2016         /*
2017          * Set new timeout to make sure a previously set one does not expire
2018          * too quickly while waiting for the GO Negotiation to complete.
2019          */
2020         p2p_set_timeout(p2p, 0, 500000);
2021         p2p_connect_send(p2p, p2p->go_neg_peer);
2022 }
2023
2024
2025 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
2026 {
2027         struct p2p_data *p2p = eloop_ctx;
2028         if (p2p->invite_peer == NULL)
2029                 return;
2030         if (p2p->pending_listen_freq) {
2031                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2032                 p2p->pending_listen_freq = 0;
2033         }
2034         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2035         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2036                         p2p->invite_dev_pw_id);
2037 }
2038
2039
2040 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2041                                        const u8 *ie, size_t ie_len)
2042 {
2043         struct p2p_message msg;
2044         struct p2p_device *dev;
2045
2046         os_memset(&msg, 0, sizeof(msg));
2047         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2048         {
2049                 p2p_parse_free(&msg);
2050                 return; /* not a P2P probe */
2051         }
2052
2053         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2054             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2055             != 0) {
2056                 /* The Probe Request is not part of P2P Device Discovery. It is
2057                  * not known whether the source address of the frame is the P2P
2058                  * Device Address or P2P Interface Address. Do not add a new
2059                  * peer entry based on this frames.
2060                  */
2061                 p2p_parse_free(&msg);
2062                 return;
2063         }
2064
2065         dev = p2p_get_device(p2p, addr);
2066         if (dev) {
2067                 if (msg.listen_channel) {
2068                         int freq;
2069
2070                         if (dev->country[0] == 0)
2071                                 os_memcpy(dev->country, msg.listen_channel, 3);
2072
2073                         freq = p2p_channel_to_freq(msg.listen_channel[3],
2074                                                    msg.listen_channel[4]);
2075
2076                         if (freq > 0 && dev->listen_freq != freq) {
2077                                 p2p_dbg(p2p,
2078                                         "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz",
2079                                         MAC2STR(addr), dev->listen_freq, freq);
2080                                 dev->listen_freq = freq;
2081                         }
2082                 }
2083
2084                 os_get_reltime(&dev->last_seen);
2085                 p2p_parse_free(&msg);
2086                 return; /* already known */
2087         }
2088
2089         dev = p2p_create_device(p2p, addr);
2090         if (dev == NULL) {
2091                 p2p_parse_free(&msg);
2092                 return;
2093         }
2094
2095         os_get_reltime(&dev->last_seen);
2096         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2097
2098         if (msg.listen_channel) {
2099                 os_memcpy(dev->country, msg.listen_channel, 3);
2100                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2101                                                        msg.listen_channel[4]);
2102         }
2103
2104         p2p_copy_wps_info(p2p, dev, 1, &msg);
2105
2106         if (msg.wfd_subelems) {
2107                 wpabuf_free(dev->info.wfd_subelems);
2108                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2109         }
2110
2111         p2p_parse_free(&msg);
2112
2113         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2114                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2115                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2116                 dev->info.group_capab, dev->info.device_name,
2117                 dev->listen_freq);
2118 }
2119
2120
2121 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2122                                                 const u8 *addr,
2123                                                 struct p2p_message *msg)
2124 {
2125         struct p2p_device *dev;
2126
2127         dev = p2p_get_device(p2p, addr);
2128         if (dev) {
2129                 os_get_reltime(&dev->last_seen);
2130                 return dev; /* already known */
2131         }
2132
2133         dev = p2p_create_device(p2p, addr);
2134         if (dev == NULL)
2135                 return NULL;
2136
2137         p2p_add_dev_info(p2p, addr, dev, msg);
2138
2139         return dev;
2140 }
2141
2142
2143 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2144 {
2145         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2146                 return 1;
2147         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2148             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2149             WPA_GET_BE16(&req_dev_type[6]) == 0)
2150                 return 1; /* Category match with wildcard OUI/sub-category */
2151         return 0;
2152 }
2153
2154
2155 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2156                         size_t num_req_dev_type)
2157 {
2158         size_t i;
2159         for (i = 0; i < num_req_dev_type; i++) {
2160                 if (dev_type_match(dev_type, req_dev_type[i]))
2161                         return 1;
2162         }
2163         return 0;
2164 }
2165
2166
2167 /**
2168  * p2p_match_dev_type - Match local device type with requested type
2169  * @p2p: P2P module context from p2p_init()
2170  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2171  * Returns: 1 on match, 0 on mismatch
2172  *
2173  * This function can be used to match the Requested Device Type attribute in
2174  * WPS IE with the local device types for deciding whether to reply to a Probe
2175  * Request frame.
2176  */
2177 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2178 {
2179         struct wps_parse_attr attr;
2180         size_t i;
2181
2182         if (wps_parse_msg(wps, &attr))
2183                 return 1; /* assume no Requested Device Type attributes */
2184
2185         if (attr.num_req_dev_type == 0)
2186                 return 1; /* no Requested Device Type attributes -> match */
2187
2188         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2189                                 attr.num_req_dev_type))
2190                 return 1; /* Own Primary Device Type matches */
2191
2192         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2193                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2194                                         attr.req_dev_type,
2195                                         attr.num_req_dev_type))
2196                         return 1; /* Own Secondary Device Type matches */
2197         }
2198
2199         /* No matching device type found */
2200         return 0;
2201 }
2202
2203
2204 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p,
2205                                          const u8 *query_hash,
2206                                          u8 query_count)
2207 {
2208         struct wpabuf *buf;
2209         u8 *len;
2210         int pw_id = -1;
2211         size_t extra = 0;
2212
2213 #ifdef CONFIG_WIFI_DISPLAY
2214         if (p2p->wfd_ie_probe_resp)
2215                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2216 #endif /* CONFIG_WIFI_DISPLAY */
2217
2218         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2219                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2220
2221         if (query_count)
2222                 extra += MAX_SVC_ADV_IE_LEN;
2223
2224         buf = wpabuf_alloc(1000 + extra);
2225         if (buf == NULL)
2226                 return NULL;
2227
2228         if (p2p->go_neg_peer) {
2229                 /* Advertise immediate availability of WPS credential */
2230                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2231         }
2232
2233         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2234                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2235                 wpabuf_free(buf);
2236                 return NULL;
2237         }
2238
2239 #ifdef CONFIG_WIFI_DISPLAY
2240         if (p2p->wfd_ie_probe_resp)
2241                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2242 #endif /* CONFIG_WIFI_DISPLAY */
2243
2244         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2245                 wpabuf_put_buf(buf,
2246                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2247
2248         /* P2P IE */
2249         len = p2p_buf_add_ie_hdr(buf);
2250         p2p_buf_add_capability(buf, p2p->dev_capab &
2251                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2252         if (p2p->ext_listen_interval)
2253                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2254                                               p2p->ext_listen_interval);
2255         p2p_buf_add_device_info(buf, p2p, NULL);
2256         p2p_buf_update_ie_hdr(buf, len);
2257
2258         if (query_count) {
2259                 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash,
2260                                              p2p->p2ps_adv_list);
2261         }
2262
2263         return buf;
2264 }
2265
2266 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf,
2267                                     struct wpabuf *ies,
2268                                     const u8 *addr, int rx_freq)
2269 {
2270         struct ieee80211_mgmt *resp;
2271         u8 channel, op_class;
2272
2273         resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
2274                                         u.probe_resp.variable));
2275
2276         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2277                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2278         os_memcpy(resp->da, addr, ETH_ALEN);
2279         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2280         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2281         resp->u.probe_resp.beacon_int = host_to_le16(100);
2282         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2283         resp->u.probe_resp.capab_info =
2284             host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2285                      WLAN_CAPABILITY_PRIVACY |
2286                      WLAN_CAPABILITY_SHORT_SLOT_TIME);
2287
2288         wpabuf_put_u8(buf, WLAN_EID_SSID);
2289         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2290         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2291
2292         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2293         wpabuf_put_u8(buf, 8);
2294         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2295         wpabuf_put_u8(buf, 90 / 5);
2296         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2297         wpabuf_put_u8(buf, 180 / 5);
2298         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2299         wpabuf_put_u8(buf, 360 / 5);
2300         wpabuf_put_u8(buf, 480 / 5);
2301         wpabuf_put_u8(buf, 540 / 5);
2302
2303         if (!rx_freq) {
2304                 channel = p2p->cfg->channel;
2305         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2306                 p2p_err(p2p, "Failed to convert freq to channel");
2307                 return -1;
2308         }
2309
2310         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2311         wpabuf_put_u8(buf, 1);
2312         wpabuf_put_u8(buf, channel);
2313
2314         wpabuf_put_buf(buf, ies);
2315
2316         return 0;
2317 }
2318
2319 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2320 {
2321         struct p2ps_advertisement *adv_data;
2322         int any_wfa;
2323
2324         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2325
2326         /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */
2327         any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0;
2328
2329         adv_data = p2p->p2ps_adv_list;
2330         while (adv_data) {
2331                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2332                         return 1; /* exact hash match */
2333                 if (any_wfa &&
2334                     os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR,
2335                                os_strlen(P2PS_WILD_HASH_STR)) == 0)
2336                         return 1; /* WFA service match */
2337                 adv_data = adv_data->next;
2338         }
2339
2340         return 0;
2341 }
2342
2343
2344 static enum p2p_probe_req_status
2345 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2346                 const u8 *bssid, const u8 *ie, size_t ie_len,
2347                 unsigned int rx_freq)
2348 {
2349         struct ieee802_11_elems elems;
2350         struct wpabuf *buf;
2351         struct p2p_message msg;
2352         struct wpabuf *ies;
2353
2354         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2355             ParseFailed) {
2356                 /* Ignore invalid Probe Request frames */
2357                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2358                 return P2P_PREQ_MALFORMED;
2359         }
2360
2361         if (elems.p2p == NULL) {
2362                 /* not a P2P probe - ignore it */
2363                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2364                 return P2P_PREQ_NOT_P2P;
2365         }
2366
2367         if (dst && !is_broadcast_ether_addr(dst) &&
2368             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2369                 /* Not sent to the broadcast address or our P2P Device Address
2370                  */
2371                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2372                         MAC2STR(dst));
2373                 return P2P_PREQ_NOT_PROCESSED;
2374         }
2375
2376         if (bssid && !is_broadcast_ether_addr(bssid)) {
2377                 /* Not sent to the Wildcard BSSID */
2378                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2379                         MAC2STR(bssid));
2380                 return P2P_PREQ_NOT_PROCESSED;
2381         }
2382
2383         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2384             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2385             0) {
2386                 /* not using P2P Wildcard SSID - ignore */
2387                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2388                 return P2P_PREQ_NOT_PROCESSED;
2389         }
2390
2391         if (supp_rates_11b_only(&elems)) {
2392                 /* Indicates support for 11b rates only */
2393                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2394                 return P2P_PREQ_NOT_P2P;
2395         }
2396
2397         os_memset(&msg, 0, sizeof(msg));
2398         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2399                 /* Could not parse P2P attributes */
2400                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2401                 return P2P_PREQ_NOT_P2P;
2402         }
2403
2404         if (msg.service_hash && msg.service_hash_count) {
2405                 const u8 *hash = msg.service_hash;
2406                 u8 i;
2407                 int p2ps_svc_found = 0;
2408
2409                 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",
2410                         p2p->in_listen, p2p->drv_in_listen, rx_freq,
2411                         p2p->cfg->channel, p2p->pending_listen_freq);
2412
2413                 if (!p2p->in_listen && !p2p->drv_in_listen &&
2414                     p2p->pending_listen_freq && rx_freq &&
2415                     rx_freq != p2p->pending_listen_freq) {
2416                         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",
2417                                 rx_freq, p2p->pending_listen_freq);
2418                         p2p_parse_free(&msg);
2419                         return P2P_PREQ_NOT_LISTEN;
2420                 }
2421
2422                 for (i = 0; i < msg.service_hash_count; i++) {
2423                         if (p2p_service_find_asp(p2p, hash)) {
2424                                 p2p_dbg(p2p, "Service Hash match found: "
2425                                         MACSTR, MAC2STR(hash));
2426                                 p2ps_svc_found = 1;
2427                                 break;
2428                         }
2429                         hash += P2PS_HASH_LEN;
2430                 }
2431
2432                 /* Probed hash unknown */
2433                 if (!p2ps_svc_found) {
2434                         p2p_dbg(p2p, "No Service Hash match found");
2435                         p2p_parse_free(&msg);
2436                         return P2P_PREQ_NOT_PROCESSED;
2437                 }
2438         } else {
2439                 /* This is not a P2PS Probe Request */
2440                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2441
2442                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2443                         /* not in Listen state - ignore Probe Request */
2444                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2445                                 p2p->in_listen, p2p->drv_in_listen);
2446                         p2p_parse_free(&msg);
2447                         return P2P_PREQ_NOT_LISTEN;
2448                 }
2449         }
2450
2451         if (msg.device_id &&
2452             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2453                 /* Device ID did not match */
2454                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2455                         MAC2STR(msg.device_id));
2456                 p2p_parse_free(&msg);
2457                 return P2P_PREQ_NOT_PROCESSED;
2458         }
2459
2460         /* Check Requested Device Type match */
2461         if (msg.wps_attributes &&
2462             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2463                 /* No match with Requested Device Type */
2464                 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it");
2465                 p2p_parse_free(&msg);
2466                 return P2P_PREQ_NOT_PROCESSED;
2467         }
2468
2469         if (!p2p->cfg->send_probe_resp) {
2470                 /* Response generated elsewhere */
2471                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2472                 p2p_parse_free(&msg);
2473                 return P2P_PREQ_NOT_PROCESSED;
2474         }
2475
2476         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2477
2478         /*
2479          * We do not really have a specific BSS that this frame is advertising,
2480          * so build a frame that has some information in valid format. This is
2481          * really only used for discovery purposes, not to learn exact BSS
2482          * parameters.
2483          */
2484         ies = p2p_build_probe_resp_ies(p2p, msg.service_hash,
2485                                        msg.service_hash_count);
2486         p2p_parse_free(&msg);
2487         if (ies == NULL)
2488                 return P2P_PREQ_NOT_PROCESSED;
2489
2490         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2491         if (buf == NULL) {
2492                 wpabuf_free(ies);
2493                 return P2P_PREQ_NOT_PROCESSED;
2494         }
2495
2496         if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) {
2497                 wpabuf_free(ies);
2498                 wpabuf_free(buf);
2499                 return P2P_PREQ_NOT_PROCESSED;
2500         }
2501
2502         wpabuf_free(ies);
2503
2504         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2505
2506         wpabuf_free(buf);
2507
2508         return P2P_PREQ_PROCESSED;
2509 }
2510
2511
2512 enum p2p_probe_req_status
2513 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2514                  const u8 *bssid, const u8 *ie, size_t ie_len,
2515                  unsigned int rx_freq, int p2p_lo_started)
2516 {
2517         enum p2p_probe_req_status res;
2518
2519         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2520
2521         if (p2p_lo_started) {
2522                 p2p_dbg(p2p,
2523                         "Probe Response is offloaded, do not reply Probe Request");
2524                 return P2P_PREQ_PROCESSED;
2525         }
2526
2527         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2528         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2529                 return res;
2530
2531         /*
2532          * Activate a pending GO Negotiation/Invite flow if a received Probe
2533          * Request frame is from an expected peer. Some devices may share the
2534          * same address for P2P and non-P2P STA running simultaneously. The
2535          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2536          * return values verified above ensure we are handling a Probe Request
2537          * frame from a P2P peer.
2538          */
2539         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2540             p2p->go_neg_peer &&
2541             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2542             == 0 &&
2543             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2544                 /* Received a Probe Request from GO Negotiation peer */
2545                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2546                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2547                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2548                 return res;
2549         }
2550
2551         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2552             p2p->invite_peer &&
2553             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2554             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2555             == 0) {
2556                 /* Received a Probe Request from Invite peer */
2557                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2558                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2559                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2560                 return res;
2561         }
2562
2563         return res;
2564 }
2565
2566
2567 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2568                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2569 {
2570         struct wpabuf *tmp;
2571         u8 *lpos;
2572         size_t tmplen;
2573         int res;
2574         u8 group_capab;
2575         struct p2p_message msg;
2576
2577         if (p2p_ie == NULL)
2578                 return 0; /* WLAN AP is not a P2P manager */
2579
2580         os_memset(&msg, 0, sizeof(msg));
2581         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2582                 return 0;
2583
2584         p2p_dbg(p2p, "BSS P2P manageability %s",
2585                 msg.manageability ? "enabled" : "disabled");
2586
2587         if (!msg.manageability)
2588                 return 0;
2589
2590         /*
2591          * (Re)Association Request - P2P IE
2592          * P2P Capability attribute (shall be present)
2593          * P2P Interface attribute (present if concurrent device and
2594          *      P2P Management is enabled)
2595          */
2596         tmp = wpabuf_alloc(200);
2597         if (tmp == NULL)
2598                 return -1;
2599
2600         lpos = p2p_buf_add_ie_hdr(tmp);
2601         group_capab = 0;
2602         if (p2p->num_groups > 0) {
2603                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2604                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2605                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2606                     p2p->cross_connect)
2607                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2608         }
2609         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2610         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2611             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2612                 p2p_buf_add_p2p_interface(tmp, p2p);
2613         p2p_buf_update_ie_hdr(tmp, lpos);
2614
2615         tmplen = wpabuf_len(tmp);
2616         if (tmplen > len)
2617                 res = -1;
2618         else {
2619                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2620                 res = tmplen;
2621         }
2622         wpabuf_free(tmp);
2623
2624         return res;
2625 }
2626
2627
2628 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2629                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2630 {
2631         struct wpabuf *tmp;
2632         u8 *lpos;
2633         struct p2p_device *peer;
2634         size_t tmplen;
2635         int res;
2636         size_t extra = 0;
2637
2638         if (!p2p_group)
2639                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2640
2641 #ifdef CONFIG_WIFI_DISPLAY
2642         if (p2p->wfd_ie_assoc_req)
2643                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2644 #endif /* CONFIG_WIFI_DISPLAY */
2645
2646         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2647                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2648
2649         /*
2650          * (Re)Association Request - P2P IE
2651          * P2P Capability attribute (shall be present)
2652          * Extended Listen Timing (may be present)
2653          * P2P Device Info attribute (shall be present)
2654          */
2655         tmp = wpabuf_alloc(200 + extra);
2656         if (tmp == NULL)
2657                 return -1;
2658
2659 #ifdef CONFIG_WIFI_DISPLAY
2660         if (p2p->wfd_ie_assoc_req)
2661                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2662 #endif /* CONFIG_WIFI_DISPLAY */
2663
2664         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2665                 wpabuf_put_buf(tmp,
2666                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2667
2668         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2669
2670         lpos = p2p_buf_add_ie_hdr(tmp);
2671         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2672         if (p2p->ext_listen_interval)
2673                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2674                                               p2p->ext_listen_interval);
2675         p2p_buf_add_device_info(tmp, p2p, peer);
2676         p2p_buf_update_ie_hdr(tmp, lpos);
2677
2678         tmplen = wpabuf_len(tmp);
2679         if (tmplen > len)
2680                 res = -1;
2681         else {
2682                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2683                 res = tmplen;
2684         }
2685         wpabuf_free(tmp);
2686
2687         return res;
2688 }
2689
2690
2691 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2692 {
2693         struct wpabuf *p2p_ie;
2694         int ret;
2695
2696         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2697         if (p2p_ie == NULL)
2698                 return 0;
2699
2700         ret = p2p_attr_text(p2p_ie, buf, end);
2701         wpabuf_free(p2p_ie);
2702         return ret;
2703 }
2704
2705
2706 struct p2ps_advertisement *
2707 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2708 {
2709         struct p2ps_advertisement *adv_data;
2710
2711         if (!p2p)
2712                 return NULL;
2713
2714         adv_data = p2p->p2ps_adv_list;
2715         while (adv_data) {
2716                 if (adv_data->id == adv_id)
2717                         return adv_data;
2718                 adv_data = adv_data->next;
2719         }
2720
2721         return NULL;
2722 }
2723
2724
2725 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2726 {
2727         struct p2ps_advertisement *adv_data;
2728         struct p2ps_advertisement **prior;
2729
2730         if (!p2p)
2731                 return -1;
2732
2733         adv_data = p2p->p2ps_adv_list;
2734         prior = &p2p->p2ps_adv_list;
2735         while (adv_data) {
2736                 if (adv_data->id == adv_id) {
2737                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2738                         *prior = adv_data->next;
2739                         os_free(adv_data);
2740                         return 0;
2741                 }
2742                 prior = &adv_data->next;
2743                 adv_data = adv_data->next;
2744         }
2745
2746         return -1;
2747 }
2748
2749
2750 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2751                         const char *adv_str, u8 svc_state, u16 config_methods,
2752                         const char *svc_info, const u8 *cpt_priority)
2753 {
2754         struct p2ps_advertisement *adv_data, *tmp, **prev;
2755         u8 buf[P2PS_HASH_LEN];
2756         size_t adv_data_len, adv_len, info_len = 0;
2757         int i;
2758
2759         if (!p2p || !adv_str || !adv_str[0] || !cpt_priority)
2760                 return -1;
2761
2762         if (!(config_methods & p2p->cfg->config_methods)) {
2763                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2764                         config_methods, p2p->cfg->config_methods);
2765                 return -1;
2766         }
2767
2768         if (!p2ps_gen_hash(p2p, adv_str, buf))
2769                 return -1;
2770
2771         if (svc_info)
2772                 info_len = os_strlen(svc_info);
2773         adv_len = os_strlen(adv_str);
2774         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2775                 info_len + 1;
2776
2777         adv_data = os_zalloc(adv_data_len);
2778         if (!adv_data)
2779                 return -1;
2780
2781         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2782         adv_data->id = adv_id;
2783         adv_data->state = svc_state;
2784         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2785         adv_data->auto_accept = (u8) auto_accept;
2786         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2787
2788         for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) {
2789                 adv_data->cpt_priority[i] = cpt_priority[i];
2790                 adv_data->cpt_mask |= cpt_priority[i];
2791         }
2792
2793         if (svc_info && info_len) {
2794                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2795                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2796         }
2797
2798         /*
2799          * Group Advertisements by service string. They do not need to be
2800          * sorted, but groups allow easier Probe Response instance grouping
2801          */
2802         tmp = p2p->p2ps_adv_list;
2803         prev = &p2p->p2ps_adv_list;
2804         while (tmp) {
2805                 if (tmp->id == adv_data->id) {
2806                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2807                                 os_free(adv_data);
2808                                 return -1;
2809                         }
2810                         adv_data->next = tmp->next;
2811                         *prev = adv_data;
2812                         os_free(tmp);
2813                         goto inserted;
2814                 } else {
2815                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2816                                 adv_data->next = tmp->next;
2817                                 tmp->next = adv_data;
2818                                 goto inserted;
2819                         }
2820                 }
2821                 prev = &tmp->next;
2822                 tmp = tmp->next;
2823         }
2824
2825         /* No svc_name match found */
2826         adv_data->next = p2p->p2ps_adv_list;
2827         p2p->p2ps_adv_list = adv_data;
2828
2829 inserted:
2830         p2p_dbg(p2p,
2831                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x",
2832                 adv_id, adv_data->config_methods, svc_state, adv_str,
2833                 adv_data->cpt_mask);
2834
2835         return 0;
2836 }
2837
2838
2839 void p2p_service_flush_asp(struct p2p_data *p2p)
2840 {
2841         struct p2ps_advertisement *adv, *prev;
2842
2843         if (!p2p)
2844                 return;
2845
2846         adv = p2p->p2ps_adv_list;
2847         while (adv) {
2848                 prev = adv;
2849                 adv = adv->next;
2850                 os_free(prev);
2851         }
2852
2853         p2p->p2ps_adv_list = NULL;
2854         p2ps_prov_free(p2p);
2855         p2p_dbg(p2p, "All ASP advertisements flushed");
2856 }
2857
2858
2859 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2860 {
2861         struct p2p_message msg;
2862
2863         os_memset(&msg, 0, sizeof(msg));
2864         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2865                 return -1;
2866
2867         if (msg.p2p_device_addr) {
2868                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2869                 return 0;
2870         } else if (msg.device_id) {
2871                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2872                 return 0;
2873         }
2874         return -1;
2875 }
2876
2877
2878 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2879 {
2880         struct wpabuf *p2p_ie;
2881         int ret;
2882
2883         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2884                                              P2P_IE_VENDOR_TYPE);
2885         if (p2p_ie == NULL)
2886                 return -1;
2887         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2888         wpabuf_free(p2p_ie);
2889         return ret;
2890 }
2891
2892
2893 static void p2p_clear_go_neg(struct p2p_data *p2p)
2894 {
2895         p2p->go_neg_peer = NULL;
2896         p2p_clear_timeout(p2p);
2897         p2p_set_state(p2p, P2P_IDLE);
2898 }
2899
2900
2901 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2902 {
2903         if (p2p->go_neg_peer == NULL) {
2904                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2905                 return; /* No pending Group Formation */
2906         }
2907
2908         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2909             0) {
2910                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2911                         MACSTR " (GO Negotiation peer " MACSTR ")",
2912                         MAC2STR(mac_addr),
2913                         MAC2STR(p2p->go_neg_peer->intended_addr));
2914                 return; /* Ignore unexpected peer address */
2915         }
2916
2917         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2918                 MAC2STR(mac_addr));
2919
2920         p2p_clear_go_neg(p2p);
2921 }
2922
2923
2924 void p2p_group_formation_failed(struct p2p_data *p2p)
2925 {
2926         if (p2p->go_neg_peer == NULL) {
2927                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2928                 return; /* No pending Group Formation */
2929         }
2930
2931         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2932                 MAC2STR(p2p->go_neg_peer->intended_addr));
2933
2934         p2p_clear_go_neg(p2p);
2935 }
2936
2937
2938 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2939 {
2940         struct p2p_data *p2p;
2941
2942         if (cfg->max_peers < 1 ||
2943             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2944                 return NULL;
2945
2946         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2947         if (p2p == NULL)
2948                 return NULL;
2949         p2p->cfg = (struct p2p_config *) (p2p + 1);
2950         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2951         if (cfg->dev_name)
2952                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2953         if (cfg->manufacturer)
2954                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2955         if (cfg->model_name)
2956                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2957         if (cfg->model_number)
2958                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2959         if (cfg->serial_number)
2960                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2961         if (cfg->pref_chan) {
2962                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2963                                                 sizeof(struct p2p_channel));
2964                 if (p2p->cfg->pref_chan) {
2965                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2966                                   cfg->num_pref_chan *
2967                                   sizeof(struct p2p_channel));
2968                 } else
2969                         p2p->cfg->num_pref_chan = 0;
2970         }
2971
2972         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2973
2974         p2p->min_disc_int = 1;
2975         p2p->max_disc_int = 3;
2976         p2p->max_disc_tu = -1;
2977
2978         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2979                 p2p->next_tie_breaker = 0;
2980         p2p->next_tie_breaker &= 0x01;
2981         if (cfg->sd_request)
2982                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2983         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2984         if (cfg->concurrent_operations)
2985                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2986         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2987
2988         dl_list_init(&p2p->devices);
2989
2990         p2p->go_timeout = 100;
2991         p2p->client_timeout = 20;
2992         p2p->num_p2p_sd_queries = 0;
2993
2994         p2p_dbg(p2p, "initialized");
2995         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2996         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2997
2998         return p2p;
2999 }
3000
3001
3002 void p2p_deinit(struct p2p_data *p2p)
3003 {
3004 #ifdef CONFIG_WIFI_DISPLAY
3005         wpabuf_free(p2p->wfd_ie_beacon);
3006         wpabuf_free(p2p->wfd_ie_probe_req);
3007         wpabuf_free(p2p->wfd_ie_probe_resp);
3008         wpabuf_free(p2p->wfd_ie_assoc_req);
3009         wpabuf_free(p2p->wfd_ie_invitation);
3010         wpabuf_free(p2p->wfd_ie_prov_disc_req);
3011         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
3012         wpabuf_free(p2p->wfd_ie_go_neg);
3013         wpabuf_free(p2p->wfd_dev_info);
3014         wpabuf_free(p2p->wfd_assoc_bssid);
3015         wpabuf_free(p2p->wfd_coupled_sink_info);
3016         wpabuf_free(p2p->wfd_r2_dev_info);
3017 #endif /* CONFIG_WIFI_DISPLAY */
3018
3019         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3020         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
3021         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3022         p2p_flush(p2p);
3023         p2p_free_req_dev_types(p2p);
3024         os_free(p2p->cfg->dev_name);
3025         os_free(p2p->cfg->manufacturer);
3026         os_free(p2p->cfg->model_name);
3027         os_free(p2p->cfg->model_number);
3028         os_free(p2p->cfg->serial_number);
3029         os_free(p2p->cfg->pref_chan);
3030         os_free(p2p->groups);
3031         p2ps_prov_free(p2p);
3032         wpabuf_free(p2p->sd_resp);
3033         p2p_remove_wps_vendor_extensions(p2p);
3034         os_free(p2p->no_go_freq.range);
3035         p2p_service_flush_asp(p2p);
3036
3037         os_free(p2p);
3038 }
3039
3040
3041 void p2p_flush(struct p2p_data *p2p)
3042 {
3043         struct p2p_device *dev, *prev;
3044
3045         p2p_ext_listen(p2p, 0, 0);
3046         p2p_stop_find(p2p);
3047         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
3048                               list) {
3049                 dl_list_del(&dev->list);
3050                 p2p_device_free(p2p, dev);
3051         }
3052         p2p_free_sd_queries(p2p);
3053         os_free(p2p->after_scan_tx);
3054         p2p->after_scan_tx = NULL;
3055         p2p->ssid_set = 0;
3056         p2ps_prov_free(p2p);
3057         p2p_reset_pending_pd(p2p);
3058         p2p->override_pref_op_class = 0;
3059         p2p->override_pref_channel = 0;
3060 }
3061
3062
3063 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
3064 {
3065         struct p2p_device *dev;
3066
3067         dev = p2p_get_device(p2p, addr);
3068         if (dev == NULL)
3069                 return -1;
3070
3071         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3072
3073         if (p2p->go_neg_peer == dev) {
3074                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3075                 p2p->go_neg_peer = NULL;
3076         }
3077
3078         dev->wps_method = WPS_NOT_READY;
3079         dev->oob_pw_id = 0;
3080         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3081         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3082
3083         /* Check if after_scan_tx is for this peer. If so free it */
3084         if (p2p->after_scan_tx &&
3085             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3086                 os_free(p2p->after_scan_tx);
3087                 p2p->after_scan_tx = NULL;
3088         }
3089
3090         return 0;
3091 }
3092
3093
3094 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3095 {
3096         os_free(p2p->cfg->dev_name);
3097         if (dev_name) {
3098                 p2p->cfg->dev_name = os_strdup(dev_name);
3099                 if (p2p->cfg->dev_name == NULL)
3100                         return -1;
3101         } else
3102                 p2p->cfg->dev_name = NULL;
3103         return 0;
3104 }
3105
3106
3107 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3108 {
3109         os_free(p2p->cfg->manufacturer);
3110         p2p->cfg->manufacturer = NULL;
3111         if (manufacturer) {
3112                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3113                 if (p2p->cfg->manufacturer == NULL)
3114                         return -1;
3115         }
3116
3117         return 0;
3118 }
3119
3120
3121 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3122 {
3123         os_free(p2p->cfg->model_name);
3124         p2p->cfg->model_name = NULL;
3125         if (model_name) {
3126                 p2p->cfg->model_name = os_strdup(model_name);
3127                 if (p2p->cfg->model_name == NULL)
3128                         return -1;
3129         }
3130
3131         return 0;
3132 }
3133
3134
3135 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3136 {
3137         os_free(p2p->cfg->model_number);
3138         p2p->cfg->model_number = NULL;
3139         if (model_number) {
3140                 p2p->cfg->model_number = os_strdup(model_number);
3141                 if (p2p->cfg->model_number == NULL)
3142                         return -1;
3143         }
3144
3145         return 0;
3146 }
3147
3148
3149 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3150 {
3151         os_free(p2p->cfg->serial_number);
3152         p2p->cfg->serial_number = NULL;
3153         if (serial_number) {
3154                 p2p->cfg->serial_number = os_strdup(serial_number);
3155                 if (p2p->cfg->serial_number == NULL)
3156                         return -1;
3157         }
3158
3159         return 0;
3160 }
3161
3162
3163 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3164 {
3165         p2p->cfg->config_methods = config_methods;
3166 }
3167
3168
3169 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3170 {
3171         os_memcpy(p2p->cfg->uuid, uuid, 16);
3172 }
3173
3174
3175 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3176 {
3177         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3178         return 0;
3179 }
3180
3181
3182 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3183                           size_t num_dev_types)
3184 {
3185         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3186                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3187         p2p->cfg->num_sec_dev_types = num_dev_types;
3188         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3189         return 0;
3190 }
3191
3192
3193 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3194 {
3195         int i;
3196
3197         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3198                 wpabuf_free(p2p->wps_vendor_ext[i]);
3199                 p2p->wps_vendor_ext[i] = NULL;
3200         }
3201 }
3202
3203
3204 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3205                                  const struct wpabuf *vendor_ext)
3206 {
3207         int i;
3208
3209         if (vendor_ext == NULL)
3210                 return -1;
3211
3212         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3213                 if (p2p->wps_vendor_ext[i] == NULL)
3214                         break;
3215         }
3216         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3217                 return -1;
3218
3219         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3220         if (p2p->wps_vendor_ext[i] == NULL)
3221                 return -1;
3222
3223         return 0;
3224 }
3225
3226
3227 int p2p_set_country(struct p2p_data *p2p, const char *country)
3228 {
3229         os_memcpy(p2p->cfg->country, country, 3);
3230         return 0;
3231 }
3232
3233
3234 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3235 {
3236         int res;
3237
3238         if (dev->sd_pending_bcast_queries == 0) {
3239                 /* Initialize with total number of registered broadcast
3240                  * SD queries. */
3241                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3242         }
3243
3244         res = p2p_start_sd(p2p, dev);
3245         if (res == -2)
3246                 return -2;
3247         if (res == 0)
3248                 return 1;
3249
3250         if (dev->req_config_methods &&
3251             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3252                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3253                         MACSTR " (config methods 0x%x)",
3254                         MAC2STR(dev->info.p2p_device_addr),
3255                         dev->req_config_methods);
3256                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3257                         return 1;
3258         }
3259
3260         return 0;
3261 }
3262
3263
3264 void p2p_continue_find(struct p2p_data *p2p)
3265 {
3266         struct p2p_device *dev;
3267         int found, res;
3268
3269         p2p_set_state(p2p, P2P_SEARCH);
3270
3271         /* Continue from the device following the last iteration */
3272         found = 0;
3273         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3274                 if (dev == p2p->last_p2p_find_oper) {
3275                         found = 1;
3276                         continue;
3277                 }
3278                 if (!found)
3279                         continue;
3280                 res = p2p_pre_find_operation(p2p, dev);
3281                 if (res > 0) {
3282                         p2p->last_p2p_find_oper = dev;
3283                         return;
3284                 }
3285                 if (res == -2)
3286                         goto skip_sd;
3287         }
3288
3289         /*
3290          * Wrap around to the beginning of the list and continue until the last
3291          * iteration device.
3292          */
3293         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3294                 res = p2p_pre_find_operation(p2p, dev);
3295                 if (res > 0) {
3296                         p2p->last_p2p_find_oper = dev;
3297                         return;
3298                 }
3299                 if (res == -2)
3300                         goto skip_sd;
3301                 if (dev == p2p->last_p2p_find_oper)
3302                         break;
3303         }
3304
3305 skip_sd:
3306         os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN);
3307         p2p_listen_in_find(p2p, 1);
3308 }
3309
3310
3311 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3312 {
3313         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3314                 success);
3315         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3316
3317         if (!success) {
3318                 if (p2p->sd_peer) {
3319                         if (is_zero_ether_addr(p2p->sd_query_no_ack)) {
3320                                 os_memcpy(p2p->sd_query_no_ack,
3321                                           p2p->sd_peer->info.p2p_device_addr,
3322                                           ETH_ALEN);
3323                                 p2p_dbg(p2p,
3324                                         "First SD Query no-ACK in this search iteration: "
3325                                         MACSTR, MAC2STR(p2p->sd_query_no_ack));
3326                         }
3327                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3328                 }
3329                 p2p->sd_peer = NULL;
3330                 if (p2p->state != P2P_IDLE)
3331                         p2p_continue_find(p2p);
3332                 return;
3333         }
3334
3335         if (p2p->sd_peer == NULL) {
3336                 p2p_dbg(p2p, "No SD peer entry known");
3337                 if (p2p->state != P2P_IDLE)
3338                         p2p_continue_find(p2p);
3339                 return;
3340         }
3341
3342         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3343                 /* Update the pending broadcast SD query count for this device
3344                  */
3345                 p2p->sd_peer->sd_pending_bcast_queries--;
3346
3347                 /*
3348                  * If there are no pending broadcast queries for this device,
3349                  * mark it as done (-1).
3350                  */
3351                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3352                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3353         }
3354
3355         /* Wait for response from the peer */
3356         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3357         p2p_set_timeout(p2p, 0, 200000);
3358 }
3359
3360
3361 /**
3362  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3363  * @p2p: P2P module context from p2p_init()
3364  */
3365 static void p2p_retry_pd(struct p2p_data *p2p)
3366 {
3367         struct p2p_device *dev;
3368
3369         /*
3370          * Retry the prov disc req attempt only for the peer that the user had
3371          * requested.
3372          */
3373
3374         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3375                 if (os_memcmp(p2p->pending_pd_devaddr,
3376                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3377                         continue;
3378                 if (!dev->req_config_methods)
3379                         continue;
3380
3381                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3382                         MACSTR " (config methods 0x%x)",
3383                         MAC2STR(dev->info.p2p_device_addr),
3384                         dev->req_config_methods);
3385                 p2p_send_prov_disc_req(p2p, dev,
3386                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3387                                        p2p->pd_force_freq);
3388                 return;
3389         }
3390 }
3391
3392
3393 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3394 {
3395         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3396                 success);
3397
3398         /*
3399          * Postpone resetting the pending action state till after we actually
3400          * time out. This allows us to take some action like notifying any
3401          * interested parties about no response to the request.
3402          *
3403          * When the timer (below) goes off we check in IDLE, SEARCH, or
3404          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3405          * requests in, if this was still pending and then raise notification.
3406          */
3407
3408         if (!success) {
3409                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3410
3411                 if (p2p->user_initiated_pd &&
3412                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3413                 {
3414                         /* Retry request from timeout to avoid busy loops */
3415                         p2p->pending_action_state = P2P_PENDING_PD;
3416                         p2p_set_timeout(p2p, 0, 50000);
3417                 } else if (p2p->state != P2P_IDLE)
3418                         p2p_continue_find(p2p);
3419                 else if (p2p->user_initiated_pd) {
3420                         p2p->pending_action_state = P2P_PENDING_PD;
3421                         p2p_set_timeout(p2p, 0, 300000);
3422                 }
3423                 return;
3424         }
3425
3426         /*
3427          * If after PD Request the peer doesn't expect to receive PD Response
3428          * the PD Request ACK indicates a completion of the current PD. This
3429          * happens only on the advertiser side sending the follow-on PD Request
3430          * with the status different than 12 (Success: accepted by user).
3431          */
3432         if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker &&
3433             p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) {
3434                 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK");
3435
3436                 if (p2p->send_action_in_progress) {
3437                         p2p->send_action_in_progress = 0;
3438                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3439                 }
3440
3441                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3442
3443                 if (p2p->cfg->p2ps_prov_complete) {
3444                         p2p->cfg->p2ps_prov_complete(
3445                                 p2p->cfg->cb_ctx,
3446                                 p2p->p2ps_prov->status,
3447                                 p2p->p2ps_prov->adv_mac,
3448                                 p2p->p2ps_prov->adv_mac,
3449                                 p2p->p2ps_prov->session_mac,
3450                                 NULL, p2p->p2ps_prov->adv_id,
3451                                 p2p->p2ps_prov->session_id,
3452                                 0, 0, NULL, 0, 0, 0,
3453                                 NULL, NULL, 0, 0, NULL, 0);
3454                 }
3455
3456                 if (p2p->user_initiated_pd)
3457                         p2p_reset_pending_pd(p2p);
3458
3459                 p2ps_prov_free(p2p);
3460                 return;
3461         }
3462
3463         /*
3464          * This postponing, of resetting pending_action_state, needs to be
3465          * done only for user initiated PD requests and not internal ones.
3466          */
3467         if (p2p->user_initiated_pd)
3468                 p2p->pending_action_state = P2P_PENDING_PD;
3469         else
3470                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3471
3472         /* Wait for response from the peer */
3473         if (p2p->state == P2P_SEARCH)
3474                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3475         p2p_set_timeout(p2p, 0, 200000);
3476 }
3477
3478
3479 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3480 {
3481         if (p2p->after_scan_tx_in_progress) {
3482                 p2p->after_scan_tx_in_progress = 0;
3483                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3484                     p2p_run_after_scan(p2p))
3485                         return 1;
3486                 if (p2p->state == P2P_SEARCH) {
3487                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3488                         p2p_continue_find(p2p);
3489                 }
3490         }
3491
3492         return 0;
3493 }
3494
3495
3496 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3497 {
3498         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3499                 success);
3500
3501         if (p2p->send_action_in_progress) {
3502                 p2p->send_action_in_progress = 0;
3503                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3504         }
3505
3506         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3507
3508         if (!success)
3509                 goto continue_search;
3510
3511         if (!p2p->cfg->prov_disc_resp_cb ||
3512             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3513                 goto continue_search;
3514
3515         p2p_dbg(p2p,
3516                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3517         return;
3518
3519 continue_search:
3520         p2p_check_after_scan_tx_continuation(p2p);
3521 }
3522
3523
3524 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3525                          struct os_reltime *rx_time, int level, const u8 *ies,
3526                          size_t ies_len)
3527 {
3528         if (os_reltime_before(rx_time, &p2p->find_start)) {
3529                 /*
3530                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3531                  * scan results for relatively long time. To avoid reporting
3532                  * stale information, update P2P peers only based on results
3533                  * that have based on frames received after the last p2p_find
3534                  * operation was started.
3535                  */
3536                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3537                         " (rx_time=%u.%06u find_start=%u.%06u)",
3538                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3539                         (unsigned int) rx_time->usec,
3540                         (unsigned int) p2p->find_start.sec,
3541                         (unsigned int) p2p->find_start.usec);
3542                 return 0;
3543         }
3544
3545         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3546
3547         return 0;
3548 }
3549
3550
3551 void p2p_scan_res_handled(struct p2p_data *p2p)
3552 {
3553         if (!p2p->p2p_scan_running) {
3554                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3555         }
3556         p2p->p2p_scan_running = 0;
3557         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3558
3559         if (p2p_run_after_scan(p2p))
3560                 return;
3561         if (p2p->state == P2P_SEARCH)
3562                 p2p_continue_find(p2p);
3563 }
3564
3565
3566 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id,
3567                  unsigned int bands)
3568 {
3569         u8 dev_capab;
3570         u8 *len;
3571
3572 #ifdef CONFIG_WIFI_DISPLAY
3573         if (p2p->wfd_ie_probe_req)
3574                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3575 #endif /* CONFIG_WIFI_DISPLAY */
3576
3577         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3578                 wpabuf_put_buf(ies,
3579                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3580
3581         len = p2p_buf_add_ie_hdr(ies);
3582
3583         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3584
3585         /* P2PS requires Probe Request frames to include SD bit */
3586         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3587                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3588
3589         p2p_buf_add_capability(ies, dev_capab, 0);
3590
3591         if (dev_id)
3592                 p2p_buf_add_device_id(ies, dev_id);
3593         if (p2p->cfg->reg_class && p2p->cfg->channel)
3594                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3595                                            p2p->cfg->reg_class,
3596                                            p2p->cfg->channel);
3597         if (p2p->ext_listen_interval)
3598                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3599                                               p2p->ext_listen_interval);
3600
3601         if (bands & BAND_60_GHZ)
3602                 p2p_buf_add_device_info(ies, p2p, NULL);
3603
3604         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3605                 p2p_buf_add_service_hash(ies, p2p);
3606
3607         /* TODO: p2p_buf_add_operating_channel() if GO */
3608         p2p_buf_update_ie_hdr(ies, len);
3609 }
3610
3611
3612 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3613 {
3614         size_t len = 100;
3615
3616 #ifdef CONFIG_WIFI_DISPLAY
3617         if (p2p && p2p->wfd_ie_probe_req)
3618                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3619 #endif /* CONFIG_WIFI_DISPLAY */
3620
3621         if (p2p && p2p->vendor_elem &&
3622             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3623                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3624
3625         return len;
3626 }
3627
3628
3629 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3630 {
3631         return p2p_attr_text(p2p_ie, buf, end);
3632 }
3633
3634
3635 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3636 {
3637         struct p2p_device *dev = p2p->go_neg_peer;
3638         int timeout;
3639
3640         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3641
3642         if (dev == NULL) {
3643                 p2p_dbg(p2p, "No pending GO Negotiation");
3644                 return;
3645         }
3646
3647         if (success) {
3648                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3649                         p2p_set_state(p2p, P2P_IDLE);
3650                         return;
3651                 }
3652         } else if (dev->go_neg_req_sent) {
3653                 /* Cancel the increment from p2p_connect_send() on failure */
3654                 dev->go_neg_req_sent--;
3655         }
3656
3657         if (!success &&
3658             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3659             !is_zero_ether_addr(dev->member_in_go_dev)) {
3660                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3661                         MAC2STR(dev->info.p2p_device_addr));
3662                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3663                 p2p_send_dev_disc_req(p2p, dev);
3664                 return;
3665         }
3666
3667         /*
3668          * Use P2P find, if needed, to find the other device from its listen
3669          * channel.
3670          */
3671         p2p_set_state(p2p, P2P_CONNECT);
3672         timeout = success ? 500000 : 100000;
3673         if (!success && p2p->go_neg_peer &&
3674             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3675                 unsigned int r;
3676                 /*
3677                  * Peer is expected to wait our response and we will skip the
3678                  * listen phase. Add some randomness to the wait time here to
3679                  * make it less likely to hit cases where we could end up in
3680                  * sync with peer not listening.
3681                  */
3682                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3683                         r = 0;
3684                 timeout += r % 100000;
3685         }
3686         p2p_set_timeout(p2p, 0, timeout);
3687 }
3688
3689
3690 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3691 {
3692         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3693                 success);
3694         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3695                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3696                 return;
3697         }
3698         p2p_set_state(p2p, P2P_CONNECT);
3699         p2p_set_timeout(p2p, 0, 500000);
3700 }
3701
3702
3703 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3704                                        const u8 *addr)
3705 {
3706         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3707         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3708                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3709                 return;
3710         }
3711
3712         if (success) {
3713                 struct p2p_device *dev;
3714                 dev = p2p_get_device(p2p, addr);
3715                 if (dev &&
3716                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3717                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3718         }
3719
3720         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3721                 p2p_continue_find(p2p);
3722 }
3723
3724
3725 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3726                                enum p2p_send_action_result result)
3727 {
3728         struct p2p_device *dev;
3729
3730         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3731         if (result == P2P_SEND_ACTION_FAILED) {
3732                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3733                 p2p_go_neg_failed(p2p, -1);
3734                 return;
3735         }
3736
3737         dev = p2p->go_neg_peer;
3738
3739         if (result == P2P_SEND_ACTION_NO_ACK) {
3740                 /*
3741                  * Retry GO Negotiation Confirmation
3742                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3743                  * ACK for confirmation.
3744                  */
3745                 if (dev && dev->go_neg_conf &&
3746                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3747                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3748                                 dev->go_neg_conf_sent);
3749                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3750                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3751                                             dev->info.p2p_device_addr,
3752                                             p2p->cfg->dev_addr,
3753                                             dev->info.p2p_device_addr,
3754                                             wpabuf_head(dev->go_neg_conf),
3755                                             wpabuf_len(dev->go_neg_conf), 0) >=
3756                             0) {
3757                                 dev->go_neg_conf_sent++;
3758                                 return;
3759                         }
3760                         p2p_dbg(p2p, "Failed to re-send Action frame");
3761
3762                         /*
3763                          * Continue with the assumption that the first attempt
3764                          * went through and just the ACK frame was lost.
3765                          */
3766                 }
3767
3768                 /*
3769                  * It looks like the TX status for GO Negotiation Confirm is
3770                  * often showing failure even when the peer has actually
3771                  * received the frame. Since the peer may change channels
3772                  * immediately after having received the frame, we may not see
3773                  * an Ack for retries, so just dropping a single frame may
3774                  * trigger this. To allow the group formation to succeed if the
3775                  * peer did indeed receive the frame, continue regardless of
3776                  * the TX status.
3777                  */
3778                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3779         }
3780
3781         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3782
3783         if (dev == NULL)
3784                 return;
3785
3786         p2p_go_complete(p2p, dev);
3787 }
3788
3789
3790 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3791                         const u8 *src, const u8 *bssid,
3792                         enum p2p_send_action_result result)
3793 {
3794         enum p2p_pending_action_state state;
3795         int success;
3796
3797         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3798                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3799                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3800                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3801         success = result == P2P_SEND_ACTION_SUCCESS;
3802         state = p2p->pending_action_state;
3803         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3804         switch (state) {
3805         case P2P_NO_PENDING_ACTION:
3806                 if (p2p->send_action_in_progress) {
3807                         p2p->send_action_in_progress = 0;
3808                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3809                 }
3810                 p2p_check_after_scan_tx_continuation(p2p);
3811                 break;
3812         case P2P_PENDING_GO_NEG_REQUEST:
3813                 p2p_go_neg_req_cb(p2p, success);
3814                 break;
3815         case P2P_PENDING_GO_NEG_RESPONSE:
3816                 p2p_go_neg_resp_cb(p2p, success);
3817                 break;
3818         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3819                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3820                 break;
3821         case P2P_PENDING_GO_NEG_CONFIRM:
3822                 p2p_go_neg_conf_cb(p2p, result);
3823                 break;
3824         case P2P_PENDING_SD:
3825                 p2p_sd_cb(p2p, success);
3826                 break;
3827         case P2P_PENDING_PD:
3828                 p2p_prov_disc_cb(p2p, success);
3829                 break;
3830         case P2P_PENDING_PD_RESPONSE:
3831                 p2p_prov_disc_resp_cb(p2p, success);
3832                 break;
3833         case P2P_PENDING_INVITATION_REQUEST:
3834                 p2p_invitation_req_cb(p2p, success);
3835                 break;
3836         case P2P_PENDING_INVITATION_RESPONSE:
3837                 p2p_invitation_resp_cb(p2p, success);
3838                 if (p2p->inv_status != P2P_SC_SUCCESS)
3839                         p2p_check_after_scan_tx_continuation(p2p);
3840                 break;
3841         case P2P_PENDING_DEV_DISC_REQUEST:
3842                 p2p_dev_disc_req_cb(p2p, success);
3843                 break;
3844         case P2P_PENDING_DEV_DISC_RESPONSE:
3845                 p2p_dev_disc_resp_cb(p2p, success);
3846                 break;
3847         case P2P_PENDING_GO_DISC_REQ:
3848                 p2p_go_disc_req_cb(p2p, success);
3849                 break;
3850         }
3851
3852         p2p->after_scan_tx_in_progress = 0;
3853 }
3854
3855
3856 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3857                    unsigned int duration)
3858 {
3859         if (freq == p2p->pending_client_disc_freq) {
3860                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3861                 p2p->pending_client_disc_freq = 0;
3862                 return;
3863         }
3864
3865         if (freq != p2p->pending_listen_freq) {
3866                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3867                         freq, duration, p2p->pending_listen_freq);
3868                 return;
3869         }
3870
3871         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3872                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3873                 p2p->pending_listen_freq);
3874         p2p->in_listen = 1;
3875         p2p->drv_in_listen = freq;
3876         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3877                 /*
3878                  * Add 20 msec extra wait to avoid race condition with driver
3879                  * remain-on-channel end event, i.e., give driver more time to
3880                  * complete the operation before our timeout expires.
3881                  */
3882                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3883                                 p2p->pending_listen_usec + 20000);
3884         }
3885
3886         p2p->pending_listen_freq = 0;
3887 }
3888
3889
3890 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3891 {
3892         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3893         p2p->drv_in_listen = 0;
3894         if (p2p->in_listen)
3895                 return 0; /* Internal timeout will trigger the next step */
3896
3897         if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer &&
3898             p2p->pending_listen_freq) {
3899                 /*
3900                  * Better wait a bit if the driver is unable to start
3901                  * offchannel operation for some reason to continue with
3902                  * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions.
3903                  */
3904                 p2p_dbg(p2p,
3905                         "Listen operation did not seem to start - delay idle phase to avoid busy loop");
3906                 p2p_set_timeout(p2p, 0, 100000);
3907                 return 1;
3908         }
3909
3910         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3911                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3912                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3913                         p2p_go_neg_failed(p2p, -1);
3914                         return 0;
3915                 }
3916
3917                 p2p_set_state(p2p, P2P_CONNECT);
3918                 p2p_connect_send(p2p, p2p->go_neg_peer);
3919                 return 1;
3920         } else if (p2p->state == P2P_SEARCH) {
3921                 if (p2p->p2p_scan_running) {
3922                          /*
3923                           * Search is already in progress. This can happen if
3924                           * an Action frame RX is reported immediately after
3925                           * the end of a remain-on-channel operation and the
3926                           * response frame to that is sent using an offchannel
3927                           * operation while in p2p_find. Avoid an attempt to
3928                           * restart a scan here.
3929                           */
3930                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3931                         return 1;
3932                 }
3933                 if (p2p->pending_listen_freq) {
3934                         /*
3935                          * Better wait a bit if the driver is unable to start
3936                          * offchannel operation for some reason. p2p_search()
3937                          * will be started from internal timeout.
3938                          */
3939                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3940                         p2p_set_timeout(p2p, 0, 100000);
3941                         return 1;
3942                 }
3943                 if (p2p->search_delay) {
3944                         p2p_dbg(p2p, "Delay search operation by %u ms",
3945                                 p2p->search_delay);
3946                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3947                                         (p2p->search_delay % 1000) * 1000);
3948                         return 1;
3949                 }
3950                 p2p_search(p2p);
3951                 return 1;
3952         }
3953
3954         return 0;
3955 }
3956
3957
3958 static void p2p_timeout_connect(struct p2p_data *p2p)
3959 {
3960         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3961         if (p2p->go_neg_peer &&
3962             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3963                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3964                 p2p_go_neg_failed(p2p, -1);
3965                 return;
3966         }
3967         if (p2p->go_neg_peer &&
3968             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3969             p2p->go_neg_peer->connect_reqs < 120) {
3970                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3971                 p2p_connect_send(p2p, p2p->go_neg_peer);
3972                 return;
3973         }
3974         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3975                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3976                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3977                 p2p_set_timeout(p2p, 0, 30000);
3978                 return;
3979         }
3980         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3981         p2p_listen_in_find(p2p, 0);
3982 }
3983
3984
3985 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3986 {
3987         if (p2p->go_neg_peer) {
3988                 if (p2p->drv_in_listen) {
3989                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3990                         return;
3991                 }
3992
3993                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3994                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3995                         p2p_go_neg_failed(p2p, -1);
3996                         return;
3997                 }
3998
3999                 p2p_set_state(p2p, P2P_CONNECT);
4000                 p2p_connect_send(p2p, p2p->go_neg_peer);
4001         } else
4002                 p2p_set_state(p2p, P2P_IDLE);
4003 }
4004
4005
4006 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
4007 {
4008         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
4009
4010         if (p2p->cfg->is_concurrent_session_active &&
4011             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
4012                 p2p_set_timeout(p2p, 0, 500000);
4013         else
4014                 p2p_set_timeout(p2p, 0, 200000);
4015 }
4016
4017
4018 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
4019 {
4020         struct p2p_device *dev = p2p->go_neg_peer;
4021
4022         if (dev == NULL) {
4023                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
4024                 return;
4025         }
4026
4027         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
4028         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
4029         p2p_listen_in_find(p2p, 0);
4030 }
4031
4032
4033 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
4034 {
4035         p2p_dbg(p2p, "Service Discovery Query timeout");
4036         if (p2p->sd_peer) {
4037                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4038                 p2p->sd_peer = NULL;
4039         }
4040         p2p_continue_find(p2p);
4041 }
4042
4043
4044 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
4045 {
4046         p2p_dbg(p2p, "Provision Discovery Request timeout");
4047         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4048         p2p_continue_find(p2p);
4049 }
4050
4051
4052 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
4053 {
4054         u32 adv_id = 0;
4055         u8 *adv_mac = NULL;
4056
4057         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4058
4059         /*
4060          * For user initiated PD requests that we have not gotten any responses
4061          * for while in IDLE state, we retry them a couple of times before
4062          * giving up.
4063          */
4064         if (!p2p->user_initiated_pd)
4065                 return;
4066
4067         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
4068
4069         if (p2p->pd_retries) {
4070                 p2p->pd_retries--;
4071                 p2p_retry_pd(p2p);
4072         } else {
4073                 struct p2p_device *dev;
4074                 int for_join = 0;
4075
4076                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
4077                         if (os_memcmp(p2p->pending_pd_devaddr,
4078                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
4079                                 continue;
4080                         if (dev->req_config_methods &&
4081                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
4082                                 for_join = 1;
4083                 }
4084
4085                 if (p2p->p2ps_prov) {
4086                         adv_id = p2p->p2ps_prov->adv_id;
4087                         adv_mac = p2p->p2ps_prov->adv_mac;
4088                 }
4089
4090                 if (p2p->cfg->prov_disc_fail)
4091                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
4092                                                  p2p->pending_pd_devaddr,
4093                                                  for_join ?
4094                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
4095                                                  P2P_PROV_DISC_TIMEOUT,
4096                                                  adv_id, adv_mac, NULL);
4097                 p2p_reset_pending_pd(p2p);
4098         }
4099 }
4100
4101
4102 static void p2p_timeout_invite(struct p2p_data *p2p)
4103 {
4104         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
4105         p2p_set_state(p2p, P2P_INVITE_LISTEN);
4106         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
4107                 /*
4108                  * Better remain on operating channel instead of listen channel
4109                  * when running a group.
4110                  */
4111                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
4112                 p2p_set_timeout(p2p, 0, 100000);
4113                 return;
4114         }
4115         p2p_listen_in_find(p2p, 0);
4116 }
4117
4118
4119 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
4120 {
4121         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
4122                 p2p_set_state(p2p, P2P_INVITE);
4123                 p2p_invite_send(p2p, p2p->invite_peer,
4124                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
4125         } else {
4126                 if (p2p->invite_peer) {
4127                         p2p_dbg(p2p, "Invitation Request retry limit reached");
4128                         if (p2p->cfg->invitation_result)
4129                                 p2p->cfg->invitation_result(
4130                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
4131                                         p2p->invite_peer->info.p2p_device_addr,
4132                                         0, 0);
4133                 }
4134                 p2p_set_state(p2p, P2P_IDLE);
4135         }
4136 }
4137
4138
4139 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
4140 {
4141         struct p2p_data *p2p = eloop_ctx;
4142
4143         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
4144
4145         p2p->in_listen = 0;
4146         if (p2p->drv_in_listen) {
4147                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4148                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4149         }
4150
4151         switch (p2p->state) {
4152         case P2P_IDLE:
4153                 /* Check if we timed out waiting for PD req */
4154                 if (p2p->pending_action_state == P2P_PENDING_PD)
4155                         p2p_timeout_prov_disc_req(p2p);
4156                 break;
4157         case P2P_SEARCH:
4158                 /* Check if we timed out waiting for PD req */
4159                 if (p2p->pending_action_state == P2P_PENDING_PD)
4160                         p2p_timeout_prov_disc_req(p2p);
4161                 if (p2p->search_delay && !p2p->in_search_delay) {
4162                         p2p_dbg(p2p, "Delay search operation by %u ms",
4163                                 p2p->search_delay);
4164                         p2p->in_search_delay = 1;
4165                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4166                                         (p2p->search_delay % 1000) * 1000);
4167                         break;
4168                 }
4169                 p2p->in_search_delay = 0;
4170                 p2p_search(p2p);
4171                 break;
4172         case P2P_CONNECT:
4173                 p2p_timeout_connect(p2p);
4174                 break;
4175         case P2P_CONNECT_LISTEN:
4176                 p2p_timeout_connect_listen(p2p);
4177                 break;
4178         case P2P_GO_NEG:
4179                 break;
4180         case P2P_LISTEN_ONLY:
4181                 /* Check if we timed out waiting for PD req */
4182                 if (p2p->pending_action_state == P2P_PENDING_PD)
4183                         p2p_timeout_prov_disc_req(p2p);
4184
4185                 if (p2p->ext_listen_only) {
4186                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4187                         p2p->ext_listen_only = 0;
4188                         p2p_set_state(p2p, P2P_IDLE);
4189                 }
4190                 break;
4191         case P2P_WAIT_PEER_CONNECT:
4192                 p2p_timeout_wait_peer_connect(p2p);
4193                 break;
4194         case P2P_WAIT_PEER_IDLE:
4195                 p2p_timeout_wait_peer_idle(p2p);
4196                 break;
4197         case P2P_SD_DURING_FIND:
4198                 p2p_timeout_sd_during_find(p2p);
4199                 break;
4200         case P2P_PROVISIONING:
4201                 break;
4202         case P2P_PD_DURING_FIND:
4203                 p2p_timeout_prov_disc_during_find(p2p);
4204                 break;
4205         case P2P_INVITE:
4206                 p2p_timeout_invite(p2p);
4207                 break;
4208         case P2P_INVITE_LISTEN:
4209                 p2p_timeout_invite_listen(p2p);
4210                 break;
4211         }
4212 }
4213
4214
4215 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4216 {
4217         struct p2p_device *dev;
4218
4219         dev = p2p_get_device(p2p, peer_addr);
4220         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4221                 MACSTR, MAC2STR(peer_addr));
4222         if (dev == NULL) {
4223                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4224                 return -1;
4225         }
4226         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4227         dev->flags |= P2P_DEV_USER_REJECTED;
4228         return 0;
4229 }
4230
4231
4232 const char * p2p_wps_method_text(enum p2p_wps_method method)
4233 {
4234         switch (method) {
4235         case WPS_NOT_READY:
4236                 return "not-ready";
4237         case WPS_PIN_DISPLAY:
4238                 return "Display";
4239         case WPS_PIN_KEYPAD:
4240                 return "Keypad";
4241         case WPS_PBC:
4242                 return "PBC";
4243         case WPS_NFC:
4244                 return "NFC";
4245         case WPS_P2PS:
4246                 return "P2PS";
4247         }
4248
4249         return "??";
4250 }
4251
4252
4253 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4254 {
4255         switch (go_state) {
4256         case UNKNOWN_GO:
4257                 return "unknown";
4258         case LOCAL_GO:
4259                 return "local";
4260         case  REMOTE_GO:
4261                 return "remote";
4262         }
4263
4264         return "??";
4265 }
4266
4267
4268 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4269                                                const u8 *addr, int next)
4270 {
4271         struct p2p_device *dev;
4272
4273         if (addr)
4274                 dev = p2p_get_device(p2p, addr);
4275         else
4276                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4277
4278         if (dev && next) {
4279                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4280                 if (&dev->list == &p2p->devices)
4281                         dev = NULL;
4282         }
4283
4284         if (dev == NULL)
4285                 return NULL;
4286
4287         return &dev->info;
4288 }
4289
4290
4291 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4292                           char *buf, size_t buflen)
4293 {
4294         struct p2p_device *dev;
4295         int res;
4296         char *pos, *end;
4297         struct os_reltime now;
4298
4299         if (info == NULL)
4300                 return -1;
4301
4302         dev = (struct p2p_device *) (((u8 *) info) -
4303                                      offsetof(struct p2p_device, info));
4304
4305         pos = buf;
4306         end = buf + buflen;
4307
4308         os_get_reltime(&now);
4309         res = os_snprintf(pos, end - pos,
4310                           "age=%d\n"
4311                           "listen_freq=%d\n"
4312                           "wps_method=%s\n"
4313                           "interface_addr=" MACSTR "\n"
4314                           "member_in_go_dev=" MACSTR "\n"
4315                           "member_in_go_iface=" MACSTR "\n"
4316                           "go_neg_req_sent=%d\n"
4317                           "go_state=%s\n"
4318                           "dialog_token=%u\n"
4319                           "intended_addr=" MACSTR "\n"
4320                           "country=%c%c\n"
4321                           "oper_freq=%d\n"
4322                           "req_config_methods=0x%x\n"
4323                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4324                           "status=%d\n"
4325                           "invitation_reqs=%u\n",
4326                           (int) (now.sec - dev->last_seen.sec),
4327                           dev->listen_freq,
4328                           p2p_wps_method_text(dev->wps_method),
4329                           MAC2STR(dev->interface_addr),
4330                           MAC2STR(dev->member_in_go_dev),
4331                           MAC2STR(dev->member_in_go_iface),
4332                           dev->go_neg_req_sent,
4333                           p2p_go_state_text(dev->go_state),
4334                           dev->dialog_token,
4335                           MAC2STR(dev->intended_addr),
4336                           dev->country[0] ? dev->country[0] : '_',
4337                           dev->country[1] ? dev->country[1] : '_',
4338                           dev->oper_freq,
4339                           dev->req_config_methods,
4340                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4341                           "[PROBE_REQ_ONLY]" : "",
4342                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4343                           dev->flags & P2P_DEV_NOT_YET_READY ?
4344                           "[NOT_YET_READY]" : "",
4345                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4346                           "[PD_PEER_DISPLAY]" : "",
4347                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4348                           "[PD_PEER_KEYPAD]" : "",
4349                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4350                           "[PD_PEER_P2PS]" : "",
4351                           dev->flags & P2P_DEV_USER_REJECTED ?
4352                           "[USER_REJECTED]" : "",
4353                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4354                           "[PEER_WAITING_RESPONSE]" : "",
4355                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4356                           "[PREFER_PERSISTENT_GROUP]" : "",
4357                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4358                           "[WAIT_GO_NEG_RESPONSE]" : "",
4359                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4360                           "[WAIT_GO_NEG_CONFIRM]" : "",
4361                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4362                           "[GROUP_CLIENT_ONLY]" : "",
4363                           dev->flags & P2P_DEV_FORCE_FREQ ?
4364                           "[FORCE_FREQ]" : "",
4365                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4366                           "[PD_FOR_JOIN]" : "",
4367                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4368                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4369                           dev->status,
4370                           dev->invitation_reqs);
4371         if (os_snprintf_error(end - pos, res))
4372                 return pos - buf;
4373         pos += res;
4374
4375         if (dev->ext_listen_period) {
4376                 res = os_snprintf(pos, end - pos,
4377                                   "ext_listen_period=%u\n"
4378                                   "ext_listen_interval=%u\n",
4379                                   dev->ext_listen_period,
4380                                   dev->ext_listen_interval);
4381                 if (os_snprintf_error(end - pos, res))
4382                         return pos - buf;
4383                 pos += res;
4384         }
4385
4386         if (dev->oper_ssid_len) {
4387                 res = os_snprintf(pos, end - pos,
4388                                   "oper_ssid=%s\n",
4389                                   wpa_ssid_txt(dev->oper_ssid,
4390                                                dev->oper_ssid_len));
4391                 if (os_snprintf_error(end - pos, res))
4392                         return pos - buf;
4393                 pos += res;
4394         }
4395
4396 #ifdef CONFIG_WIFI_DISPLAY
4397         if (dev->info.wfd_subelems) {
4398                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4399                 if (os_snprintf_error(end - pos, res))
4400                         return pos - buf;
4401                 pos += res;
4402
4403                 pos += wpa_snprintf_hex(pos, end - pos,
4404                                         wpabuf_head(dev->info.wfd_subelems),
4405                                         wpabuf_len(dev->info.wfd_subelems));
4406
4407                 res = os_snprintf(pos, end - pos, "\n");
4408                 if (os_snprintf_error(end - pos, res))
4409                         return pos - buf;
4410                 pos += res;
4411         }
4412 #endif /* CONFIG_WIFI_DISPLAY */
4413
4414         return pos - buf;
4415 }
4416
4417
4418 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4419 {
4420         return p2p_get_device(p2p, addr) != NULL;
4421 }
4422
4423
4424 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4425 {
4426         if (enabled) {
4427                 p2p_dbg(p2p, "Client discoverability enabled");
4428                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4429         } else {
4430                 p2p_dbg(p2p, "Client discoverability disabled");
4431                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4432         }
4433 }
4434
4435
4436 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4437                                               u32 duration2, u32 interval2)
4438 {
4439         struct wpabuf *req;
4440         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4441         u8 *len;
4442
4443         req = wpabuf_alloc(100);
4444         if (req == NULL)
4445                 return NULL;
4446
4447         if (duration1 || interval1) {
4448                 os_memset(&desc1, 0, sizeof(desc1));
4449                 desc1.count_type = 1;
4450                 desc1.duration = duration1;
4451                 desc1.interval = interval1;
4452                 ptr1 = &desc1;
4453
4454                 if (duration2 || interval2) {
4455                         os_memset(&desc2, 0, sizeof(desc2));
4456                         desc2.count_type = 2;
4457                         desc2.duration = duration2;
4458                         desc2.interval = interval2;
4459                         ptr2 = &desc2;
4460                 }
4461         }
4462
4463         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4464         len = p2p_buf_add_ie_hdr(req);
4465         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4466         p2p_buf_update_ie_hdr(req, len);
4467
4468         return req;
4469 }
4470
4471
4472 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4473                      const u8 *own_interface_addr, unsigned int freq,
4474                      u32 duration1, u32 interval1, u32 duration2,
4475                      u32 interval2)
4476 {
4477         struct wpabuf *req;
4478
4479         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4480                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4481                 "dur2=%u int2=%u",
4482                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4483                 freq, duration1, interval1, duration2, interval2);
4484
4485         req = p2p_build_presence_req(duration1, interval1, duration2,
4486                                      interval2);
4487         if (req == NULL)
4488                 return -1;
4489
4490         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4491         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4492                             go_interface_addr,
4493                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4494                 p2p_dbg(p2p, "Failed to send Action frame");
4495         }
4496         wpabuf_free(req);
4497
4498         return 0;
4499 }
4500
4501
4502 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4503                                                size_t noa_len, u8 dialog_token)
4504 {
4505         struct wpabuf *resp;
4506         u8 *len;
4507
4508         resp = wpabuf_alloc(100 + noa_len);
4509         if (resp == NULL)
4510                 return NULL;
4511
4512         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4513         len = p2p_buf_add_ie_hdr(resp);
4514         p2p_buf_add_status(resp, status);
4515         if (noa) {
4516                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4517                 wpabuf_put_le16(resp, noa_len);
4518                 wpabuf_put_data(resp, noa, noa_len);
4519         } else
4520                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4521         p2p_buf_update_ie_hdr(resp, len);
4522
4523         return resp;
4524 }
4525
4526
4527 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4528                                      const u8 *sa, const u8 *data, size_t len,
4529                                      int rx_freq)
4530 {
4531         struct p2p_message msg;
4532         u8 status;
4533         struct wpabuf *resp;
4534         size_t g;
4535         struct p2p_group *group = NULL;
4536         int parsed = 0;
4537         u8 noa[50];
4538         int noa_len;
4539
4540         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4541
4542         for (g = 0; g < p2p->num_groups; g++) {
4543                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4544                               ETH_ALEN) == 0) {
4545                         group = p2p->groups[g];
4546                         break;
4547                 }
4548         }
4549         if (group == NULL) {
4550                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4551                         MACSTR, MAC2STR(da));
4552                 return;
4553         }
4554
4555         if (p2p_parse(data, len, &msg) < 0) {
4556                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4557                 status = P2P_SC_FAIL_INVALID_PARAMS;
4558                 goto fail;
4559         }
4560         parsed = 1;
4561
4562         if (msg.noa == NULL) {
4563                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4564                 status = P2P_SC_FAIL_INVALID_PARAMS;
4565                 goto fail;
4566         }
4567
4568         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4569
4570 fail:
4571         if (p2p->cfg->get_noa)
4572                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4573                                             sizeof(noa));
4574         else
4575                 noa_len = -1;
4576         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4577                                        noa_len > 0 ? noa_len : 0,
4578                                        msg.dialog_token);
4579         if (parsed)
4580                 p2p_parse_free(&msg);
4581         if (resp == NULL)
4582                 return;
4583
4584         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4585         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4586                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4587                 p2p_dbg(p2p, "Failed to send Action frame");
4588         }
4589         wpabuf_free(resp);
4590 }
4591
4592
4593 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4594                                       const u8 *sa, const u8 *data, size_t len)
4595 {
4596         struct p2p_message msg;
4597
4598         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4599
4600         if (p2p_parse(data, len, &msg) < 0) {
4601                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4602                 return;
4603         }
4604
4605         if (msg.status == NULL || msg.noa == NULL) {
4606                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4607                 p2p_parse_free(&msg);
4608                 return;
4609         }
4610
4611         if (p2p->cfg->presence_resp) {
4612                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4613                                         msg.noa, msg.noa_len);
4614         }
4615
4616         if (*msg.status) {
4617                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4618                         *msg.status);
4619                 p2p_parse_free(&msg);
4620                 return;
4621         }
4622
4623         p2p_dbg(p2p, "P2P Presence Request was accepted");
4624         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4625                     msg.noa, msg.noa_len);
4626         /* TODO: process NoA */
4627         p2p_parse_free(&msg);
4628 }
4629
4630
4631 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4632 {
4633         struct p2p_data *p2p = eloop_ctx;
4634
4635         if (p2p->ext_listen_interval) {
4636                 /* Schedule next extended listen timeout */
4637                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4638                                        p2p->ext_listen_interval_usec,
4639                                        p2p_ext_listen_timeout, p2p, NULL);
4640         }
4641
4642         if ((p2p->cfg->is_p2p_in_progress &&
4643              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4644             (p2p->pending_action_state == P2P_PENDING_PD &&
4645              p2p->pd_retries > 0)) {
4646                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4647                         p2p_state_txt(p2p->state));
4648                 return;
4649         }
4650
4651         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4652                 /*
4653                  * This should not really happen, but it looks like the Listen
4654                  * command may fail is something else (e.g., a scan) was
4655                  * running at an inconvenient time. As a workaround, allow new
4656                  * Extended Listen operation to be started.
4657                  */
4658                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4659                 p2p->ext_listen_only = 0;
4660                 p2p_set_state(p2p, P2P_IDLE);
4661         }
4662
4663         if (p2p->state != P2P_IDLE) {
4664                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4665                 return;
4666         }
4667
4668         p2p_dbg(p2p, "Extended Listen timeout");
4669         p2p->ext_listen_only = 1;
4670         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4671                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4672                 p2p->ext_listen_only = 0;
4673         }
4674 }
4675
4676
4677 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4678                    unsigned int interval)
4679 {
4680         if (period > 65535 || interval > 65535 || period > interval ||
4681             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4682                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4683                         period, interval);
4684                 return -1;
4685         }
4686
4687         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4688
4689         if (interval == 0) {
4690                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4691                 p2p->ext_listen_period = 0;
4692                 p2p->ext_listen_interval = 0;
4693                 return 0;
4694         }
4695
4696         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4697                 period, interval);
4698         p2p->ext_listen_period = period;
4699         p2p->ext_listen_interval = interval;
4700         p2p->ext_listen_interval_sec = interval / 1000;
4701         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4702
4703         eloop_register_timeout(p2p->ext_listen_interval_sec,
4704                                p2p->ext_listen_interval_usec,
4705                                p2p_ext_listen_timeout, p2p, NULL);
4706
4707         return 0;
4708 }
4709
4710
4711 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4712                       const u8 *ie, size_t ie_len)
4713 {
4714         struct p2p_message msg;
4715
4716         if (bssid == NULL || ie == NULL)
4717                 return;
4718
4719         os_memset(&msg, 0, sizeof(msg));
4720         if (p2p_parse_ies(ie, ie_len, &msg))
4721                 return;
4722         if (msg.minor_reason_code == NULL) {
4723                 p2p_parse_free(&msg);
4724                 return;
4725         }
4726
4727         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4728                 " reason_code=%u minor_reason_code=%u",
4729                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4730
4731         p2p_parse_free(&msg);
4732 }
4733
4734
4735 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4736                         const u8 *ie, size_t ie_len)
4737 {
4738         struct p2p_message msg;
4739
4740         if (bssid == NULL || ie == NULL)
4741                 return;
4742
4743         os_memset(&msg, 0, sizeof(msg));
4744         if (p2p_parse_ies(ie, ie_len, &msg))
4745                 return;
4746         if (msg.minor_reason_code == NULL) {
4747                 p2p_parse_free(&msg);
4748                 return;
4749         }
4750
4751         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4752                 " reason_code=%u minor_reason_code=%u",
4753                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4754
4755         p2p_parse_free(&msg);
4756 }
4757
4758
4759 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4760 {
4761         if (enabled) {
4762                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4763                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4764         } else {
4765                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4766                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4767         }
4768 }
4769
4770
4771 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4772                                  u8 *op_channel,
4773                                  struct wpa_freq_range_list *avoid_list,
4774                                  struct wpa_freq_range_list *disallow_list)
4775 {
4776         return p2p_channel_random_social(&p2p->channels, op_class, op_channel,
4777                                          avoid_list, disallow_list);
4778 }
4779
4780
4781 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4782                            u8 forced)
4783 {
4784         if (p2p_channel_to_freq(reg_class, channel) < 0)
4785                 return -1;
4786
4787         /*
4788          * Listen channel was set in configuration or set by control interface;
4789          * cannot override it.
4790          */
4791         if (p2p->cfg->channel_forced && forced == 0) {
4792                 p2p_dbg(p2p,
4793                         "Listen channel was previously configured - do not override based on optimization");
4794                 return -1;
4795         }
4796
4797         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4798                 reg_class, channel);
4799
4800         if (p2p->state == P2P_IDLE) {
4801                 p2p->cfg->reg_class = reg_class;
4802                 p2p->cfg->channel = channel;
4803                 p2p->cfg->channel_forced = forced;
4804         } else {
4805                 p2p_dbg(p2p, "Defer setting listen channel");
4806                 p2p->pending_reg_class = reg_class;
4807                 p2p->pending_channel = channel;
4808                 p2p->pending_channel_forced = forced;
4809         }
4810
4811         return 0;
4812 }
4813
4814
4815 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4816 {
4817         return p2p->cfg->channel;
4818 }
4819
4820
4821 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4822 {
4823         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4824         if (postfix == NULL) {
4825                 p2p->cfg->ssid_postfix_len = 0;
4826                 return 0;
4827         }
4828         if (len > sizeof(p2p->cfg->ssid_postfix))
4829                 return -1;
4830         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4831         p2p->cfg->ssid_postfix_len = len;
4832         return 0;
4833 }
4834
4835
4836 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4837                          int cfg_op_channel)
4838 {
4839         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4840                 return -1;
4841
4842         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4843                 op_reg_class, op_channel);
4844         p2p->cfg->op_reg_class = op_reg_class;
4845         p2p->cfg->op_channel = op_channel;
4846         p2p->cfg->cfg_op_channel = cfg_op_channel;
4847         return 0;
4848 }
4849
4850
4851 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4852                       const struct p2p_channel *pref_chan)
4853 {
4854         struct p2p_channel *n;
4855
4856         if (pref_chan) {
4857                 n = os_memdup(pref_chan,
4858                               num_pref_chan * sizeof(struct p2p_channel));
4859                 if (n == NULL)
4860                         return -1;
4861         } else
4862                 n = NULL;
4863
4864         os_free(p2p->cfg->pref_chan);
4865         p2p->cfg->pref_chan = n;
4866         p2p->cfg->num_pref_chan = num_pref_chan;
4867
4868         return 0;
4869 }
4870
4871
4872 int p2p_set_no_go_freq(struct p2p_data *p2p,
4873                        const struct wpa_freq_range_list *list)
4874 {
4875         struct wpa_freq_range *tmp;
4876
4877         if (list == NULL || list->num == 0) {
4878                 os_free(p2p->no_go_freq.range);
4879                 p2p->no_go_freq.range = NULL;
4880                 p2p->no_go_freq.num = 0;
4881                 return 0;
4882         }
4883
4884         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4885         if (tmp == NULL)
4886                 return -1;
4887         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4888         os_free(p2p->no_go_freq.range);
4889         p2p->no_go_freq.range = tmp;
4890         p2p->no_go_freq.num = list->num;
4891         p2p_dbg(p2p, "Updated no GO chan list");
4892
4893         return 0;
4894 }
4895
4896
4897 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4898                            u8 *iface_addr)
4899 {
4900         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4901         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4902                 return -1;
4903         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4904         return 0;
4905 }
4906
4907
4908 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4909                            u8 *dev_addr)
4910 {
4911         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4912         if (dev == NULL)
4913                 return -1;
4914         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4915         return 0;
4916 }
4917
4918
4919 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4920 {
4921         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4922         if (is_zero_ether_addr(p2p->peer_filter))
4923                 p2p_dbg(p2p, "Disable peer filter");
4924         else
4925                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4926                         MAC2STR(p2p->peer_filter));
4927 }
4928
4929
4930 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4931 {
4932         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4933         if (p2p->cross_connect == enabled)
4934                 return;
4935         p2p->cross_connect = enabled;
4936         /* TODO: may need to tear down any action group where we are GO(?) */
4937 }
4938
4939
4940 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4941 {
4942         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4943         if (dev == NULL)
4944                 return -1;
4945         if (dev->oper_freq <= 0)
4946                 return -1;
4947         return dev->oper_freq;
4948 }
4949
4950
4951 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4952 {
4953         p2p_dbg(p2p, "Intra BSS distribution %s",
4954                 enabled ? "enabled" : "disabled");
4955         p2p->cfg->p2p_intra_bss = enabled;
4956 }
4957
4958
4959 void p2p_update_channel_list(struct p2p_data *p2p,
4960                              const struct p2p_channels *chan,
4961                              const struct p2p_channels *cli_chan)
4962 {
4963         p2p_dbg(p2p, "Update channel list");
4964         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4965         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4966         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4967                   sizeof(struct p2p_channels));
4968         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4969 }
4970
4971
4972 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4973                     const u8 *src, const u8 *bssid, const u8 *buf,
4974                     size_t len, unsigned int wait_time)
4975 {
4976         int res, scheduled;
4977
4978         if (p2p->p2p_scan_running) {
4979                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4980                 if (p2p->after_scan_tx) {
4981                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4982                         os_free(p2p->after_scan_tx);
4983                 }
4984                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4985                                                len);
4986                 if (p2p->after_scan_tx == NULL)
4987                         return -1;
4988                 p2p->after_scan_tx->freq = freq;
4989                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4990                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4991                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4992                 p2p->after_scan_tx->len = len;
4993                 p2p->after_scan_tx->wait_time = wait_time;
4994                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4995                 return 0;
4996         }
4997
4998         res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4999                                     buf, len, wait_time, &scheduled);
5000         if (res == 0 && scheduled && p2p->in_listen && freq > 0 &&
5001             (unsigned int) p2p->drv_in_listen != freq) {
5002                 p2p_dbg(p2p,
5003                         "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz",
5004                         p2p->drv_in_listen, freq);
5005                 p2p_stop_listen_for_freq(p2p, freq);
5006         }
5007         return res;
5008 }
5009
5010
5011 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
5012                            int freq_overall)
5013 {
5014         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
5015                 freq_24, freq_5, freq_overall);
5016         p2p->best_freq_24 = freq_24;
5017         p2p->best_freq_5 = freq_5;
5018         p2p->best_freq_overall = freq_overall;
5019 }
5020
5021
5022 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
5023 {
5024         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
5025         p2p->own_freq_preference = freq;
5026 }
5027
5028
5029 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
5030 {
5031         if (p2p == NULL || p2p->go_neg_peer == NULL)
5032                 return NULL;
5033         return p2p->go_neg_peer->info.p2p_device_addr;
5034 }
5035
5036
5037 const struct p2p_peer_info *
5038 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
5039 {
5040         struct p2p_device *dev;
5041
5042         if (addr) {
5043                 dev = p2p_get_device(p2p, addr);
5044                 if (!dev)
5045                         return NULL;
5046
5047                 if (!next) {
5048                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
5049                                 return NULL;
5050
5051                         return &dev->info;
5052                 } else {
5053                         do {
5054                                 dev = dl_list_first(&dev->list,
5055                                                     struct p2p_device,
5056                                                     list);
5057                                 if (!dev || &dev->list == &p2p->devices)
5058                                         return NULL;
5059                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
5060                 }
5061         } else {
5062                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
5063                 if (!dev)
5064                         return NULL;
5065                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
5066                         dev = dl_list_first(&dev->list,
5067                                             struct p2p_device,
5068                                             list);
5069                         if (!dev || &dev->list == &p2p->devices)
5070                                 return NULL;
5071                 }
5072         }
5073
5074         return &dev->info;
5075 }
5076
5077
5078 int p2p_in_progress(struct p2p_data *p2p)
5079 {
5080         if (p2p == NULL)
5081                 return 0;
5082         if (p2p->state == P2P_SEARCH)
5083                 return 2;
5084         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
5085 }
5086
5087
5088 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
5089                             u8 client_timeout)
5090 {
5091         if (p2p) {
5092                 p2p->go_timeout = go_timeout;
5093                 p2p->client_timeout = client_timeout;
5094         }
5095 }
5096
5097
5098 #ifdef CONFIG_WIFI_DISPLAY
5099
5100 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
5101 {
5102         size_t g;
5103         struct p2p_group *group;
5104
5105         for (g = 0; g < p2p->num_groups; g++) {
5106                 group = p2p->groups[g];
5107                 p2p_group_force_beacon_update_ies(group);
5108         }
5109 }
5110
5111
5112 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
5113 {
5114         wpabuf_free(p2p->wfd_ie_beacon);
5115         p2p->wfd_ie_beacon = ie;
5116         p2p_update_wfd_ie_groups(p2p);
5117         return 0;
5118 }
5119
5120
5121 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
5122 {
5123         wpabuf_free(p2p->wfd_ie_probe_req);
5124         p2p->wfd_ie_probe_req = ie;
5125         return 0;
5126 }
5127
5128
5129 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
5130 {
5131         wpabuf_free(p2p->wfd_ie_probe_resp);
5132         p2p->wfd_ie_probe_resp = ie;
5133         p2p_update_wfd_ie_groups(p2p);
5134         return 0;
5135 }
5136
5137
5138 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
5139 {
5140         wpabuf_free(p2p->wfd_ie_assoc_req);
5141         p2p->wfd_ie_assoc_req = ie;
5142         return 0;
5143 }
5144
5145
5146 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
5147 {
5148         wpabuf_free(p2p->wfd_ie_invitation);
5149         p2p->wfd_ie_invitation = ie;
5150         return 0;
5151 }
5152
5153
5154 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
5155 {
5156         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5157         p2p->wfd_ie_prov_disc_req = ie;
5158         return 0;
5159 }
5160
5161
5162 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5163 {
5164         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5165         p2p->wfd_ie_prov_disc_resp = ie;
5166         return 0;
5167 }
5168
5169
5170 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5171 {
5172         wpabuf_free(p2p->wfd_ie_go_neg);
5173         p2p->wfd_ie_go_neg = ie;
5174         return 0;
5175 }
5176
5177
5178 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5179 {
5180         wpabuf_free(p2p->wfd_dev_info);
5181         if (elem) {
5182                 p2p->wfd_dev_info = wpabuf_dup(elem);
5183                 if (p2p->wfd_dev_info == NULL)
5184                         return -1;
5185         } else
5186                 p2p->wfd_dev_info = NULL;
5187
5188         return 0;
5189 }
5190
5191
5192 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5193 {
5194         wpabuf_free(p2p->wfd_r2_dev_info);
5195         if (elem) {
5196                 p2p->wfd_r2_dev_info = wpabuf_dup(elem);
5197                 if (p2p->wfd_r2_dev_info == NULL)
5198                         return -1;
5199         } else
5200                 p2p->wfd_r2_dev_info = NULL;
5201
5202         return 0;
5203 }
5204
5205
5206 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5207 {
5208         wpabuf_free(p2p->wfd_assoc_bssid);
5209         if (elem) {
5210                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5211                 if (p2p->wfd_assoc_bssid == NULL)
5212                         return -1;
5213         } else
5214                 p2p->wfd_assoc_bssid = NULL;
5215
5216         return 0;
5217 }
5218
5219
5220 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5221                                   const struct wpabuf *elem)
5222 {
5223         wpabuf_free(p2p->wfd_coupled_sink_info);
5224         if (elem) {
5225                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5226                 if (p2p->wfd_coupled_sink_info == NULL)
5227                         return -1;
5228         } else
5229                 p2p->wfd_coupled_sink_info = NULL;
5230
5231         return 0;
5232 }
5233
5234 #endif /* CONFIG_WIFI_DISPLAY */
5235
5236
5237 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5238                      int max_disc_tu)
5239 {
5240         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5241                 return -1;
5242
5243         p2p->min_disc_int = min_disc_int;
5244         p2p->max_disc_int = max_disc_int;
5245         p2p->max_disc_tu = max_disc_tu;
5246         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5247                 min_disc_int, max_disc_int, max_disc_tu);
5248
5249         return 0;
5250 }
5251
5252
5253 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5254 {
5255         va_list ap;
5256         char buf[500];
5257
5258         if (!p2p->cfg->debug_print)
5259                 return;
5260
5261         va_start(ap, fmt);
5262         vsnprintf(buf, sizeof(buf), fmt, ap);
5263         buf[sizeof(buf) - 1] = '\0';
5264         va_end(ap);
5265         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5266 }
5267
5268
5269 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5270 {
5271         va_list ap;
5272         char buf[500];
5273
5274         if (!p2p->cfg->debug_print)
5275                 return;
5276
5277         va_start(ap, fmt);
5278         vsnprintf(buf, sizeof(buf), fmt, ap);
5279         buf[sizeof(buf) - 1] = '\0';
5280         va_end(ap);
5281         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5282 }
5283
5284
5285 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5286 {
5287         va_list ap;
5288         char buf[500];
5289
5290         if (!p2p->cfg->debug_print)
5291                 return;
5292
5293         va_start(ap, fmt);
5294         vsnprintf(buf, sizeof(buf), fmt, ap);
5295         buf[sizeof(buf) - 1] = '\0';
5296         va_end(ap);
5297         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5298 }
5299
5300
5301 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5302                              void (*peer_callback)(struct p2p_peer_info *peer,
5303                                                    void *user_data),
5304                              void *user_data)
5305 {
5306         struct p2p_device *dev, *n;
5307
5308         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5309                 peer_callback(&dev->info, user_data);
5310         }
5311 }
5312
5313
5314 #ifdef CONFIG_WPS_NFC
5315
5316 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5317                                               int client_freq,
5318                                               const u8 *go_dev_addr,
5319                                               const u8 *ssid, size_t ssid_len)
5320 {
5321         struct wpabuf *buf;
5322         u8 op_class, channel;
5323         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5324
5325         buf = wpabuf_alloc(1000);
5326         if (buf == NULL)
5327                 return NULL;
5328
5329         op_class = p2p->cfg->reg_class;
5330         channel = p2p->cfg->channel;
5331
5332         p2p_buf_add_capability(buf, p2p->dev_capab &
5333                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5334         p2p_buf_add_device_info(buf, p2p, NULL);
5335
5336         if (p2p->num_groups > 0) {
5337                 int freq = p2p_group_get_freq(p2p->groups[0]);
5338                 role = P2P_GO_IN_A_GROUP;
5339                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5340                         p2p_dbg(p2p,
5341                                 "Unknown GO operating frequency %d MHz for NFC handover",
5342                                 freq);
5343                         wpabuf_free(buf);
5344                         return NULL;
5345                 }
5346         } else if (client_freq > 0) {
5347                 role = P2P_CLIENT_IN_A_GROUP;
5348                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5349                         p2p_dbg(p2p,
5350                                 "Unknown client operating frequency %d MHz for NFC handover",
5351                                 client_freq);
5352                         wpabuf_free(buf);
5353                         return NULL;
5354                 }
5355         }
5356
5357         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5358                                        channel, role);
5359
5360         if (p2p->num_groups > 0) {
5361                 /* Limit number of clients to avoid very long message */
5362                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5363                 p2p_group_buf_add_id(p2p->groups[0], buf);
5364         } else if (client_freq > 0 &&
5365                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5366                    ssid && ssid_len > 0) {
5367                 /*
5368                  * Add the optional P2P Group ID to indicate in which group this
5369                  * device is a P2P Client.
5370                  */
5371                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5372         }
5373
5374         return buf;
5375 }
5376
5377
5378 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5379                                            int client_freq,
5380                                            const u8 *go_dev_addr,
5381                                            const u8 *ssid, size_t ssid_len)
5382 {
5383         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5384                                       ssid_len);
5385 }
5386
5387
5388 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5389                                            int client_freq,
5390                                            const u8 *go_dev_addr,
5391                                            const u8 *ssid, size_t ssid_len)
5392 {
5393         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5394                                       ssid_len);
5395 }
5396
5397
5398 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5399                                         struct p2p_nfc_params *params)
5400 {
5401         struct p2p_message msg;
5402         struct p2p_device *dev;
5403         const u8 *p2p_dev_addr;
5404         int freq;
5405         enum p2p_role_indication role;
5406
5407         params->next_step = NO_ACTION;
5408
5409         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5410                                    params->p2p_attr, params->p2p_len, &msg)) {
5411                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5412                 p2p_parse_free(&msg);
5413                 return -1;
5414         }
5415
5416         if (msg.p2p_device_addr)
5417                 p2p_dev_addr = msg.p2p_device_addr;
5418         else if (msg.device_id)
5419                 p2p_dev_addr = msg.device_id;
5420         else {
5421                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5422                 p2p_parse_free(&msg);
5423                 return -1;
5424         }
5425
5426         if (msg.oob_dev_password) {
5427                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5428                           msg.oob_dev_password_len);
5429                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5430         }
5431
5432         dev = p2p_create_device(p2p, p2p_dev_addr);
5433         if (dev == NULL) {
5434                 p2p_parse_free(&msg);
5435                 return -1;
5436         }
5437
5438         params->peer = &dev->info;
5439
5440         os_get_reltime(&dev->last_seen);
5441         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5442         p2p_copy_wps_info(p2p, dev, 0, &msg);
5443
5444         if (!msg.oob_go_neg_channel) {
5445                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5446                 p2p_parse_free(&msg);
5447                 return -1;
5448         }
5449
5450         if (msg.oob_go_neg_channel[3] == 0 &&
5451             msg.oob_go_neg_channel[4] == 0)
5452                 freq = 0;
5453         else
5454                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5455                                            msg.oob_go_neg_channel[4]);
5456         if (freq < 0) {
5457                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5458                 p2p_parse_free(&msg);
5459                 return -1;
5460         }
5461         role = msg.oob_go_neg_channel[5];
5462
5463         if (role == P2P_GO_IN_A_GROUP) {
5464                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5465                 params->go_freq = freq;
5466         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5467                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5468                         freq);
5469                 params->go_freq = freq;
5470         } else
5471                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5472         dev->oob_go_neg_freq = freq;
5473
5474         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5475                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5476                                            p2p->cfg->channel);
5477                 if (freq < 0) {
5478                         p2p_dbg(p2p, "Own listen channel not known");
5479                         p2p_parse_free(&msg);
5480                         return -1;
5481                 }
5482                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5483                 dev->oob_go_neg_freq = freq;
5484         }
5485
5486         if (msg.group_id) {
5487                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5488                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5489                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5490                           params->go_ssid_len);
5491         }
5492
5493         if (dev->flags & P2P_DEV_USER_REJECTED) {
5494                 p2p_dbg(p2p, "Do not report rejected device");
5495                 p2p_parse_free(&msg);
5496                 return 0;
5497         }
5498
5499         if (!(dev->flags & P2P_DEV_REPORTED)) {
5500                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5501                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5502                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5503         }
5504         p2p_parse_free(&msg);
5505
5506         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5507                 params->next_step = BOTH_GO;
5508         else if (role == P2P_GO_IN_A_GROUP)
5509                 params->next_step = JOIN_GROUP;
5510         else if (role == P2P_CLIENT_IN_A_GROUP) {
5511                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5512                 params->next_step = PEER_CLIENT;
5513         } else if (p2p->num_groups > 0)
5514                 params->next_step = AUTH_JOIN;
5515         else if (params->sel)
5516                 params->next_step = INIT_GO_NEG;
5517         else
5518                 params->next_step = RESP_GO_NEG;
5519
5520         return 0;
5521 }
5522
5523
5524 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5525                                       int go_intent,
5526                                       const u8 *own_interface_addr)
5527 {
5528
5529         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5530         if (dev_pw_id == 0) {
5531                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5532                 return;
5533         }
5534
5535         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5536                 dev_pw_id);
5537
5538         p2p->go_intent = go_intent;
5539         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5540 }
5541
5542 #endif /* CONFIG_WPS_NFC */
5543
5544
5545 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5546 {
5547         if (len < 8 || len > 63)
5548                 return -1;
5549         p2p->cfg->passphrase_len = len;
5550         return 0;
5551 }
5552
5553
5554 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5555 {
5556         p2p->vendor_elem = vendor_elem;
5557 }
5558
5559
5560 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5561 {
5562         struct p2p_data *p2p = eloop_ctx;
5563
5564         p2p_dbg(p2p,
5565                 "Timeout on waiting peer to become ready for GO Negotiation");
5566         p2p_go_neg_failed(p2p, -1);
5567 }
5568
5569
5570 void p2p_set_own_pref_freq_list(struct p2p_data *p2p,
5571                                 const unsigned int *pref_freq_list,
5572                                 unsigned int size)
5573 {
5574         unsigned int i;
5575
5576         if (size > P2P_MAX_PREF_CHANNELS)
5577                 size = P2P_MAX_PREF_CHANNELS;
5578         p2p->num_pref_freq = size;
5579         for (i = 0; i < size; i++) {
5580                 p2p->pref_freq_list[i] = pref_freq_list[i];
5581                 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz",
5582                         i, p2p->pref_freq_list[i]);
5583         }
5584 }
5585
5586
5587 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class,
5588                                    u8 chan)
5589 {
5590         p2p->override_pref_op_class = op_class;
5591         p2p->override_pref_channel = chan;
5592 }
5593
5594
5595 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p,
5596                                               unsigned int freq)
5597 {
5598         struct wpabuf *ies, *buf;
5599         u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
5600         int ret;
5601
5602         ies = p2p_build_probe_resp_ies(p2p, NULL, 0);
5603         if (!ies) {
5604                 wpa_printf(MSG_ERROR,
5605                            "CTRL: Failed to build Probe Response IEs");
5606                 return NULL;
5607         }
5608
5609         buf = wpabuf_alloc(200 + wpabuf_len(ies));
5610         if (!buf) {
5611                 wpabuf_free(ies);
5612                 return NULL;
5613         }
5614
5615         ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq);
5616         wpabuf_free(ies);
5617         if (ret) {
5618                 wpabuf_free(buf);
5619                 return NULL;
5620         }
5621
5622         return buf;
5623 }