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/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "crypto/sha256.h"
  17 #include "crypto/crypto.h"
  18 #include "wps/wps_i.h"
  19 #include "p2p_i.h"
  20 #include "p2p.h"
  21
  22
  23 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  24 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  25 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  26                                      const u8 *sa, const u8 *data, size_t len,
  27                                      int rx_freq);
  28 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  29                                       const u8 *sa, const u8 *data,
  30                                       size_t len);
  31 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  32 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  33
  34
  35 /*
  36  * p2p_scan recovery timeout
  37  *
  38  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  39  * timeout for this to avoid hitting P2P timeout unnecessarily.
  40  */
  41 #define P2P_SCAN_TIMEOUT 35
  42
  43 /**
  44  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  45  * entries will be removed
  46  */
  47 #ifndef P2P_PEER_EXPIRATION_AGE
  48 #define P2P_PEER_EXPIRATION_AGE 60
  49 #endif /* P2P_PEER_EXPIRATION_AGE */
  50
  51 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  52
  53 static 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 void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 107 {
 108         struct p2p_data *p2p = eloop_ctx;
 109         p2p_expire_peers(p2p);
 110         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 111                                p2p_expiration_timeout, p2p, NULL);
 112 }
 113
 114
 115 static const char * p2p_state_txt(int state)
 116 {
 117         switch (state) {
 118         case P2P_IDLE:
 119                 return "IDLE";
 120         case P2P_SEARCH:
 121                 return "SEARCH";
 122         case P2P_CONNECT:
 123                 return "CONNECT";
 124         case P2P_CONNECT_LISTEN:
 125                 return "CONNECT_LISTEN";
 126         case P2P_GO_NEG:
 127                 return "GO_NEG";
 128         case P2P_LISTEN_ONLY:
 129                 return "LISTEN_ONLY";
 130         case P2P_WAIT_PEER_CONNECT:
 131                 return "WAIT_PEER_CONNECT";
 132         case P2P_WAIT_PEER_IDLE:
 133                 return "WAIT_PEER_IDLE";
 134         case P2P_SD_DURING_FIND:
 135                 return "SD_DURING_FIND";
 136         case P2P_PROVISIONING:
 137                 return "PROVISIONING";
 138         case P2P_PD_DURING_FIND:
 139                 return "PD_DURING_FIND";
 140         case P2P_INVITE:
 141                 return "INVITE";
 142         case P2P_INVITE_LISTEN:
 143                 return "INVITE_LISTEN";
 144         default:
 145                 return "?";
 146         }
 147 }
 148
 149
 150 const char * p2p_get_state_txt(struct p2p_data *p2p)
 151 {
 152         return p2p_state_txt(p2p->state);
 153 }
 154
 155
 156 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p)
 157 {
 158         return p2p ? p2p->p2ps_adv_list : NULL;
 159 }
 160
 161
 162 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr)
 163 {
 164         if (p2p && intended_addr)
 165                 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN);
 166 }
 167
 168
 169 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 170 {
 171         struct p2p_device *dev = NULL;
 172
 173         if (!addr || !p2p)
 174                 return 0;
 175
 176         dev = p2p_get_device(p2p, addr);
 177         if (dev)
 178                 return dev->wps_prov_info;
 179         else
 180                 return 0;
 181 }
 182
 183
 184 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 185 {
 186         struct p2p_device *dev = NULL;
 187
 188         if (!addr || !p2p)
 189                 return;
 190
 191         dev = p2p_get_device(p2p, addr);
 192         if (dev)
 193                 dev->wps_prov_info = 0;
 194 }
 195
 196
 197 void p2p_set_state(struct p2p_data *p2p, int new_state)
 198 {
 199         p2p_dbg(p2p, "State %s -> %s",
 200                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 201         p2p->state = new_state;
 202
 203         if (new_state == P2P_IDLE && p2p->pending_channel) {
 204                 p2p_dbg(p2p, "Apply change in listen channel");
 205                 p2p->cfg->reg_class = p2p->pending_reg_class;
 206                 p2p->cfg->channel = p2p->pending_channel;
 207                 p2p->pending_reg_class = 0;
 208                 p2p->pending_channel = 0;
 209         }
 210 }
 211
 212
 213 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 214 {
 215         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 216                 p2p_state_txt(p2p->state), sec, usec);
 217         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 218         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 219 }
 220
 221
 222 void p2p_clear_timeout(struct p2p_data *p2p)
 223 {
 224         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 225         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 226 }
 227
 228
 229 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 230 {
 231         struct p2p_go_neg_results res;
 232         struct p2p_device *peer = p2p->go_neg_peer;
 233
 234         if (!peer)
 235                 return;
 236
 237         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 238         if (p2p->state != P2P_SEARCH) {
 239                 /*
 240                  * Clear timeouts related to GO Negotiation if no new p2p_find
 241                  * has been started.
 242                  */
 243                 p2p_clear_timeout(p2p);
 244                 p2p_set_state(p2p, P2P_IDLE);
 245         }
 246
 247         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 248         peer->wps_method = WPS_NOT_READY;
 249         peer->oob_pw_id = 0;
 250         wpabuf_free(peer->go_neg_conf);
 251         peer->go_neg_conf = NULL;
 252         p2p->go_neg_peer = NULL;
 253
 254         os_memset(&res, 0, sizeof(res));
 255         res.status = status;
 256         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 257         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 258         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 259 }
 260
 261
 262 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 263 {
 264         unsigned int r, tu;
 265         int freq;
 266         struct wpabuf *ies;
 267
 268         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 269                 p2p_state_txt(p2p->state));
 270
 271         if (p2p->pending_listen_freq) {
 272                 /* We have a pending p2p_listen request */
 273                 p2p_dbg(p2p, "p2p_listen command pending already");
 274                 return;
 275         }
 276
 277         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 278         if (freq < 0) {
 279                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 280                 return;
 281         }
 282
 283         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 284                 r = 0;
 285         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 286               p2p->min_disc_int) * 100;
 287         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 288                 tu = p2p->max_disc_tu;
 289         if (!dev_disc && tu < 100)
 290                 tu = 100; /* Need to wait in non-device discovery use cases */
 291         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 292                 tu = p2p->cfg->max_listen * 1000 / 1024;
 293
 294         if (tu == 0) {
 295                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 296                 p2p_set_timeout(p2p, 0, 0);
 297                 return;
 298         }
 299
 300         ies = p2p_build_probe_resp_ies(p2p);
 301         if (ies == NULL)
 302                 return;
 303
 304         p2p->pending_listen_freq = freq;
 305         p2p->pending_listen_sec = 0;
 306         p2p->pending_listen_usec = 1024 * tu;
 307
 308         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 309                     ies) < 0) {
 310                 p2p_dbg(p2p, "Failed to start listen mode");
 311                 p2p->pending_listen_freq = 0;
 312         }
 313         wpabuf_free(ies);
 314 }
 315
 316
 317 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 318 {
 319         int freq;
 320         struct wpabuf *ies;
 321
 322         p2p_dbg(p2p, "Going to listen(only) state");
 323
 324         if (p2p->pending_listen_freq) {
 325                 /* We have a pending p2p_listen request */
 326                 p2p_dbg(p2p, "p2p_listen command pending already");
 327                 return -1;
 328         }
 329
 330         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 331         if (freq < 0) {
 332                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 333                 return -1;
 334         }
 335
 336         p2p->pending_listen_sec = timeout / 1000;
 337         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 338
 339         if (p2p->p2p_scan_running) {
 340                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 341                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 342                         return 0;
 343                 }
 344                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 345                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 346                 return 0;
 347         }
 348
 349         ies = p2p_build_probe_resp_ies(p2p);
 350         if (ies == NULL)
 351                 return -1;
 352
 353         p2p->pending_listen_freq = freq;
 354
 355         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 356                 p2p_dbg(p2p, "Failed to start listen mode");
 357                 p2p->pending_listen_freq = 0;
 358                 wpabuf_free(ies);
 359                 return -1;
 360         }
 361         wpabuf_free(ies);
 362
 363         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 364
 365         return 0;
 366 }
 367
 368
 369 static void p2p_device_clear_reported(struct p2p_data *p2p)
 370 {
 371         struct p2p_device *dev;
 372         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 373                 dev->flags &= ~P2P_DEV_REPORTED;
 374                 dev->sd_reqs = 0;
 375         }
 376 }
 377
 378
 379 /**
 380  * p2p_get_device - Fetch a peer entry
 381  * @p2p: P2P module context from p2p_init()
 382  * @addr: P2P Device Address of the peer
 383  * Returns: Pointer to the device entry or %NULL if not found
 384  */
 385 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 386 {
 387         struct p2p_device *dev;
 388         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 389                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 390                         return dev;
 391         }
 392         return NULL;
 393 }
 394
 395
 396 /**
 397  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 398  * @p2p: P2P module context from p2p_init()
 399  * @addr: P2P Interface Address of the peer
 400  * Returns: Pointer to the device entry or %NULL if not found
 401  */
 402 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 403                                              const u8 *addr)
 404 {
 405         struct p2p_device *dev;
 406         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 407                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 408                         return dev;
 409         }
 410         return NULL;
 411 }
 412
 413
 414 /**
 415  * p2p_create_device - Create a peer entry
 416  * @p2p: P2P module context from p2p_init()
 417  * @addr: P2P Device Address of the peer
 418  * Returns: Pointer to the device entry or %NULL on failure
 419  *
 420  * If there is already an entry for the peer, it will be returned instead of
 421  * creating a new one.
 422  */
 423 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 424                                              const u8 *addr)
 425 {
 426         struct p2p_device *dev, *oldest = NULL;
 427         size_t count = 0;
 428
 429         dev = p2p_get_device(p2p, addr);
 430         if (dev)
 431                 return dev;
 432
 433         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 434                 count++;
 435                 if (oldest == NULL ||
 436                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 437                         oldest = dev;
 438         }
 439         if (count + 1 > p2p->cfg->max_peers && oldest) {
 440                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 441                 dl_list_del(&oldest->list);
 442                 p2p_device_free(p2p, oldest);
 443         }
 444
 445         dev = os_zalloc(sizeof(*dev));
 446         if (dev == NULL)
 447                 return NULL;
 448         dl_list_add(&p2p->devices, &dev->list);
 449         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 450
 451         return dev;
 452 }
 453
 454
 455 static void p2p_copy_client_info(struct p2p_device *dev,
 456                                  struct p2p_client_info *cli)
 457 {
 458         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 459         dev->info.device_name[cli->dev_name_len] = '\0';
 460         dev->info.dev_capab = cli->dev_capab;
 461         dev->info.config_methods = cli->config_methods;
 462         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 463         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 464         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 465                   dev->info.wps_sec_dev_type_list_len);
 466 }
 467
 468
 469 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 470                                  const u8 *go_interface_addr, int freq,
 471                                  const u8 *gi, size_t gi_len,
 472                                  struct os_reltime *rx_time)
 473 {
 474         struct p2p_group_info info;
 475         size_t c;
 476         struct p2p_device *dev;
 477
 478         if (gi == NULL)
 479                 return 0;
 480
 481         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 482                 return -1;
 483
 484         /*
 485          * Clear old data for this group; if the devices are still in the
 486          * group, the information will be restored in the loop following this.
 487          */
 488         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 489                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 490                               ETH_ALEN) == 0) {
 491                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 492                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 493                 }
 494         }
 495
 496         for (c = 0; c < info.num_clients; c++) {
 497                 struct p2p_client_info *cli = &info.client[c];
 498                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 499                               ETH_ALEN) == 0)
 500                         continue; /* ignore our own entry */
 501                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 502                 if (dev) {
 503                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 504                                           P2P_DEV_PROBE_REQ_ONLY)) {
 505                                 /*
 506                                  * Update information since we have not
 507                                  * received this directly from the client.
 508                                  */
 509                                 p2p_copy_client_info(dev, cli);
 510                         } else {
 511                                 /*
 512                                  * Need to update P2P Client Discoverability
 513                                  * flag since it is valid only in P2P Group
 514                                  * Info attribute.
 515                                  */
 516                                 dev->info.dev_capab &=
 517                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 518                                 dev->info.dev_capab |=
 519                                         cli->dev_capab &
 520                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 521                         }
 522                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 523                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 524                         }
 525                 } else {
 526                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 527                         if (dev == NULL)
 528                                 continue;
 529                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 530                         p2p_copy_client_info(dev, cli);
 531                         dev->oper_freq = freq;
 532                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 533                                             dev->info.p2p_device_addr,
 534                                             &dev->info, 1);
 535                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 536                 }
 537
 538                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 539                           ETH_ALEN);
 540                 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 541                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 542                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 543                           ETH_ALEN);
 544                 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT;
 545         }
 546
 547         return 0;
 548 }
 549
 550
 551 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 552                               int probe_req, const struct p2p_message *msg)
 553 {
 554         os_memcpy(dev->info.device_name, msg->device_name,
 555                   sizeof(dev->info.device_name));
 556
 557         if (msg->manufacturer &&
 558             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 559                 os_memset(dev->info.manufacturer, 0,
 560                           sizeof(dev->info.manufacturer));
 561                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 562                           msg->manufacturer_len);
 563         }
 564
 565         if (msg->model_name &&
 566             msg->model_name_len < sizeof(dev->info.model_name)) {
 567                 os_memset(dev->info.model_name, 0,
 568                           sizeof(dev->info.model_name));
 569                 os_memcpy(dev->info.model_name, msg->model_name,
 570                           msg->model_name_len);
 571         }
 572
 573         if (msg->model_number &&
 574             msg->model_number_len < sizeof(dev->info.model_number)) {
 575                 os_memset(dev->info.model_number, 0,
 576                           sizeof(dev->info.model_number));
 577                 os_memcpy(dev->info.model_number, msg->model_number,
 578                           msg->model_number_len);
 579         }
 580
 581         if (msg->serial_number &&
 582             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 583                 os_memset(dev->info.serial_number, 0,
 584                           sizeof(dev->info.serial_number));
 585                 os_memcpy(dev->info.serial_number, msg->serial_number,
 586                           msg->serial_number_len);
 587         }
 588
 589         if (msg->pri_dev_type)
 590                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 591                           sizeof(dev->info.pri_dev_type));
 592         else if (msg->wps_pri_dev_type)
 593                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 594                           sizeof(dev->info.pri_dev_type));
 595
 596         if (msg->wps_sec_dev_type_list) {
 597                 os_memcpy(dev->info.wps_sec_dev_type_list,
 598                           msg->wps_sec_dev_type_list,
 599                           msg->wps_sec_dev_type_list_len);
 600                 dev->info.wps_sec_dev_type_list_len =
 601                         msg->wps_sec_dev_type_list_len;
 602         }
 603
 604         if (msg->capability) {
 605                 /*
 606                  * P2P Client Discoverability bit is reserved in all frames
 607                  * that use this function, so do not change its value here.
 608                  */
 609                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 610                 dev->info.dev_capab |= msg->capability[0] &
 611                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 612                 dev->info.group_capab = msg->capability[1];
 613         }
 614
 615         if (msg->ext_listen_timing) {
 616                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 617                 dev->ext_listen_interval =
 618                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 619         }
 620
 621         if (!probe_req) {
 622                 u16 new_config_methods;
 623                 new_config_methods = msg->config_methods ?
 624                         msg->config_methods : msg->wps_config_methods;
 625                 if (new_config_methods &&
 626                     dev->info.config_methods != new_config_methods) {
 627                         p2p_dbg(p2p, "Update peer " MACSTR
 628                                 " config_methods 0x%x -> 0x%x",
 629                                 MAC2STR(dev->info.p2p_device_addr),
 630                                 dev->info.config_methods,
 631                                 new_config_methods);
 632                         dev->info.config_methods = new_config_methods;
 633                 }
 634         }
 635 }
 636
 637
 638 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 639                                          size_t ies_len)
 640 {
 641         const u8 *pos, *end;
 642         u8 id, len;
 643
 644         wpabuf_free(dev->info.vendor_elems);
 645         dev->info.vendor_elems = NULL;
 646
 647         end = ies + ies_len;
 648
 649         for (pos = ies; pos + 1 < end; pos += len) {
 650                 id = *pos++;
 651                 len = *pos++;
 652
 653                 if (pos + len > end)
 654                         break;
 655
 656                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 657                         continue;
 658
 659                 if (len >= 4) {
 660                         u32 type = WPA_GET_BE32(pos);
 661
 662                         if (type == WPA_IE_VENDOR_TYPE ||
 663                             type == WMM_IE_VENDOR_TYPE ||
 664                             type == WPS_IE_VENDOR_TYPE ||
 665                             type == P2P_IE_VENDOR_TYPE ||
 666                             type == WFD_IE_VENDOR_TYPE)
 667                                 continue;
 668                 }
 669
 670                 /* Unknown vendor element - make raw IE data available */
 671                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 672                         break;
 673                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 674         }
 675 }
 676
 677
 678 static int p2p_compare_wfd_info(struct p2p_device *dev,
 679                               const struct p2p_message *msg)
 680 {
 681         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 682                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 683                         return 1;
 684
 685                 return os_memcmp(dev->info.wfd_subelems->buf,
 686                                  msg->wfd_subelems->buf,
 687                                  dev->info.wfd_subelems->used);
 688         }
 689         if (dev->info.wfd_subelems || msg->wfd_subelems)
 690                 return 1;
 691
 692         return 0;
 693 }
 694
 695
 696 /**
 697  * p2p_add_device - Add peer entries based on scan results or P2P frames
 698  * @p2p: P2P module context from p2p_init()
 699  * @addr: Source address of Beacon or Probe Response frame (may be either
 700  *      P2P Device Address or P2P Interface Address)
 701  * @level: Signal level (signal strength of the received frame from the peer)
 702  * @freq: Frequency on which the Beacon or Probe Response frame was received
 703  * @rx_time: Time when the result was received
 704  * @ies: IEs from the Beacon or Probe Response frame
 705  * @ies_len: Length of ies buffer in octets
 706  * @scan_res: Whether this was based on scan results
 707  * Returns: 0 on success, -1 on failure
 708  *
 709  * If the scan result is for a GO, the clients in the group will also be added
 710  * to the peer table. This function can also be used with some other frames
 711  * like Provision Discovery Request that contains P2P Capability and P2P Device
 712  * Info attributes.
 713  */
 714 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 715                    struct os_reltime *rx_time, int level, const u8 *ies,
 716                    size_t ies_len, int scan_res)
 717 {
 718         struct p2p_device *dev;
 719         struct p2p_message msg;
 720         const u8 *p2p_dev_addr;
 721         int wfd_changed;
 722         int i;
 723         struct os_reltime time_now;
 724
 725         os_memset(&msg, 0, sizeof(msg));
 726         if (p2p_parse_ies(ies, ies_len, &msg)) {
 727                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 728                 p2p_parse_free(&msg);
 729                 return -1;
 730         }
 731
 732         if (msg.p2p_device_addr)
 733                 p2p_dev_addr = msg.p2p_device_addr;
 734         else if (msg.device_id)
 735                 p2p_dev_addr = msg.device_id;
 736         else {
 737                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 738                 p2p_parse_free(&msg);
 739                 return -1;
 740         }
 741
 742         if (!is_zero_ether_addr(p2p->peer_filter) &&
 743             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 744                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 745                         " due to peer filter", MAC2STR(p2p_dev_addr));
 746                 p2p_parse_free(&msg);
 747                 return 0;
 748         }
 749
 750         dev = p2p_create_device(p2p, p2p_dev_addr);
 751         if (dev == NULL) {
 752                 p2p_parse_free(&msg);
 753                 return -1;
 754         }
 755
 756         if (rx_time == NULL) {
 757                 os_get_reltime(&time_now);
 758                 rx_time = &time_now;
 759         }
 760
 761         /*
 762          * Update the device entry only if the new peer
 763          * entry is newer than the one previously stored, or if
 764          * the device was previously seen as a P2P Client in a group
 765          * and the new entry isn't older than a threshold.
 766          */
 767         if (dev->last_seen.sec > 0 &&
 768             os_reltime_before(rx_time, &dev->last_seen) &&
 769             (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) ||
 770              os_reltime_expired(&dev->last_seen, rx_time,
 771                                 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) {
 772                 p2p_dbg(p2p,
 773                         "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)",
 774                         (unsigned int) rx_time->sec,
 775                         (unsigned int) rx_time->usec,
 776                         (unsigned int) dev->last_seen.sec,
 777                         (unsigned int) dev->last_seen.usec,
 778                         dev->flags);
 779                 p2p_parse_free(&msg);
 780                 return -1;
 781         }
 782
 783         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 784
 785         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY |
 786                         P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT);
 787
 788         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 789                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 790         if (msg.ssid &&
 791             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 792             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 793              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 794              != 0)) {
 795                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 796                 dev->oper_ssid_len = msg.ssid[1];
 797         }
 798
 799         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 800                 wpabuf_free(dev->info.p2ps_instance);
 801                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 802                         msg.adv_service_instance, msg.adv_service_instance_len);
 803         }
 804
 805         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 806             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 807                 int ds_freq;
 808                 if (*msg.ds_params == 14)
 809                         ds_freq = 2484;
 810                 else
 811                         ds_freq = 2407 + *msg.ds_params * 5;
 812                 if (freq != ds_freq) {
 813                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 814                                 freq, ds_freq);
 815                         freq = ds_freq;
 816                 }
 817         }
 818
 819         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 820                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 821                         MACSTR " %d -> %d MHz (DS param %d)",
 822                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 823                         freq, msg.ds_params ? *msg.ds_params : -1);
 824         }
 825         if (scan_res) {
 826                 dev->listen_freq = freq;
 827                 if (msg.group_info)
 828                         dev->oper_freq = freq;
 829         }
 830         dev->info.level = level;
 831
 832         p2p_copy_wps_info(p2p, dev, 0, &msg);
 833
 834         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 835                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 836                 dev->info.wps_vendor_ext[i] = NULL;
 837         }
 838
 839         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 840                 if (msg.wps_vendor_ext[i] == NULL)
 841                         break;
 842                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 843                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 844                 if (dev->info.wps_vendor_ext[i] == NULL)
 845                         break;
 846         }
 847
 848         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 849
 850         if (msg.wfd_subelems) {
 851                 wpabuf_free(dev->info.wfd_subelems);
 852                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 853         }
 854
 855         if (scan_res) {
 856                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 857                                       msg.group_info, msg.group_info_len,
 858                                       rx_time);
 859         }
 860
 861         p2p_parse_free(&msg);
 862
 863         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 864
 865         if (dev->flags & P2P_DEV_REPORTED && !wfd_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_type == P2P_FIND_PROGRESSIVE &&
1014             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1015                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1016                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1017         } else {
1018                 type = P2P_SCAN_SOCIAL;
1019                 p2p_dbg(p2p, "Starting search");
1020         }
1021
1022         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1023                                  p2p->num_req_dev_types, p2p->req_dev_types,
1024                                  p2p->find_dev_id, pw_id);
1025         if (res < 0) {
1026                 p2p_dbg(p2p, "Scan request schedule failed");
1027                 p2p_continue_find(p2p);
1028         }
1029 }
1030
1031
1032 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1033 {
1034         struct p2p_data *p2p = eloop_ctx;
1035         p2p_dbg(p2p, "Find timeout -> stop");
1036         p2p_stop_find(p2p);
1037 }
1038
1039
1040 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1041 {
1042         if (status != 0) {
1043                 p2p_dbg(p2p, "Scan request failed");
1044                 /* Do continue find even for the first p2p_find_scan */
1045                 p2p_continue_find(p2p);
1046         } else {
1047                 p2p_dbg(p2p, "Running p2p_scan");
1048                 p2p->p2p_scan_running = 1;
1049                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1050                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1051                                        p2p, NULL);
1052         }
1053 }
1054
1055
1056 static int p2p_run_after_scan(struct p2p_data *p2p)
1057 {
1058         struct p2p_device *dev;
1059         enum p2p_after_scan op;
1060
1061         if (p2p->after_scan_tx) {
1062                 p2p->after_scan_tx_in_progress = 1;
1063                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1064                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1065                                       p2p->after_scan_tx->freq,
1066                                       p2p->after_scan_tx->dst,
1067                                       p2p->after_scan_tx->src,
1068                                       p2p->after_scan_tx->bssid,
1069                                       (u8 *) (p2p->after_scan_tx + 1),
1070                                       p2p->after_scan_tx->len,
1071                                       p2p->after_scan_tx->wait_time);
1072                 os_free(p2p->after_scan_tx);
1073                 p2p->after_scan_tx = NULL;
1074                 return 1;
1075         }
1076
1077         op = p2p->start_after_scan;
1078         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1079         switch (op) {
1080         case P2P_AFTER_SCAN_NOTHING:
1081                 break;
1082         case P2P_AFTER_SCAN_LISTEN:
1083                 p2p_dbg(p2p, "Start previously requested Listen state");
1084                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1085                            p2p->pending_listen_usec / 1000);
1086                 return 1;
1087         case P2P_AFTER_SCAN_CONNECT:
1088                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1089                         MAC2STR(p2p->after_scan_peer));
1090                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1091                 if (dev == NULL) {
1092                         p2p_dbg(p2p, "Peer not known anymore");
1093                         break;
1094                 }
1095                 p2p_connect_send(p2p, dev);
1096                 return 1;
1097         }
1098
1099         return 0;
1100 }
1101
1102
1103 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1104 {
1105         struct p2p_data *p2p = eloop_ctx;
1106         int running;
1107         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1108         running = p2p->p2p_scan_running;
1109         /* Make sure we recover from missed scan results callback */
1110         p2p->p2p_scan_running = 0;
1111
1112         if (running)
1113                 p2p_run_after_scan(p2p);
1114 }
1115
1116
1117 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1118 {
1119         p2p->num_req_dev_types = 0;
1120         os_free(p2p->req_dev_types);
1121         p2p->req_dev_types = NULL;
1122 }
1123
1124
1125 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1126 {
1127         u8 buf[SHA256_MAC_LEN];
1128         char str_buf[256];
1129         const u8 *adv_array;
1130         size_t i, adv_len;
1131
1132         if (!str || !hash)
1133                 return 0;
1134
1135         if (!str[0]) {
1136                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1137                 return 1;
1138         }
1139
1140         adv_array = (u8 *) str_buf;
1141         adv_len = os_strlen(str);
1142
1143         for (i = 0; str[i] && i < adv_len; i++) {
1144                 if (str[i] >= 'A' && str[i] <= 'Z')
1145                         str_buf[i] = str[i] - 'A' + 'a';
1146                 else
1147                         str_buf[i] = str[i];
1148         }
1149
1150         if (sha256_vector(1, &adv_array, &adv_len, buf))
1151                 return 0;
1152
1153         os_memcpy(hash, buf, P2PS_HASH_LEN);
1154         return 1;
1155 }
1156
1157
1158 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1159              enum p2p_discovery_type type,
1160              unsigned int num_req_dev_types, const u8 *req_dev_types,
1161              const u8 *dev_id, unsigned int search_delay,
1162              u8 seek_count, const char **seek, int freq)
1163 {
1164         int res;
1165
1166         p2p_dbg(p2p, "Starting find (type=%d)", type);
1167         os_get_reltime(&p2p->find_start);
1168         if (p2p->p2p_scan_running) {
1169                 p2p_dbg(p2p, "p2p_scan is already running");
1170         }
1171
1172         p2p_free_req_dev_types(p2p);
1173         if (req_dev_types && num_req_dev_types) {
1174                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1175                                                WPS_DEV_TYPE_LEN);
1176                 if (p2p->req_dev_types == NULL)
1177                         return -1;
1178                 os_memcpy(p2p->req_dev_types, req_dev_types,
1179                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1180                 p2p->num_req_dev_types = num_req_dev_types;
1181         }
1182
1183         if (dev_id) {
1184                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1185                 p2p->find_dev_id = p2p->find_dev_id_buf;
1186         } else
1187                 p2p->find_dev_id = NULL;
1188
1189         if (seek_count == 0 || !seek) {
1190                 /* Not an ASP search */
1191                 p2p->p2ps_seek = 0;
1192         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1193                 /*
1194                  * An empty seek string means no hash values, but still an ASP
1195                  * search.
1196                  */
1197                 p2p->p2ps_seek_count = 0;
1198                 p2p->p2ps_seek = 1;
1199         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1200                 u8 buf[P2PS_HASH_LEN];
1201                 int i;
1202
1203                 p2p->p2ps_seek_count = seek_count;
1204                 for (i = 0; i < seek_count; i++) {
1205                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1206                                 continue;
1207
1208                         /* If asking for wildcard, don't do others */
1209                         if (os_memcmp(buf, p2p->wild_card_hash,
1210                                       P2PS_HASH_LEN) == 0) {
1211                                 p2p->p2ps_seek_count = 0;
1212                                 break;
1213                         }
1214
1215                         os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1216                                   P2PS_HASH_LEN);
1217                 }
1218                 p2p->p2ps_seek = 1;
1219         } else {
1220                 p2p->p2ps_seek_count = 0;
1221                 p2p->p2ps_seek = 1;
1222         }
1223
1224         /* Special case to perform wildcard search */
1225         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1226                 p2p->p2ps_seek_count = 1;
1227                 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1228         }
1229
1230         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1231         p2p_clear_timeout(p2p);
1232         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1233         p2p->find_type = type;
1234         p2p_device_clear_reported(p2p);
1235         p2p_set_state(p2p, P2P_SEARCH);
1236         p2p->search_delay = search_delay;
1237         p2p->in_search_delay = 0;
1238         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1239         p2p->last_p2p_find_timeout = timeout;
1240         if (timeout)
1241                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1242                                        p2p, NULL);
1243         switch (type) {
1244         case P2P_FIND_START_WITH_FULL:
1245                 if (freq > 0) {
1246                         /*
1247                          * Start with the specified channel and then move to
1248                          * social channels only scans.
1249                          */
1250                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1251                                                  P2P_SCAN_SPECIFIC, freq,
1252                                                  p2p->num_req_dev_types,
1253                                                  p2p->req_dev_types, dev_id,
1254                                                  DEV_PW_DEFAULT);
1255                         break;
1256                 }
1257                 /* fall through */
1258         case P2P_FIND_PROGRESSIVE:
1259                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1260                                          p2p->num_req_dev_types,
1261                                          p2p->req_dev_types, dev_id,
1262                                          DEV_PW_DEFAULT);
1263                 break;
1264         case P2P_FIND_ONLY_SOCIAL:
1265                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1266                                          p2p->num_req_dev_types,
1267                                          p2p->req_dev_types, dev_id,
1268                                          DEV_PW_DEFAULT);
1269                 break;
1270         default:
1271                 return -1;
1272         }
1273
1274         if (res != 0 && p2p->p2p_scan_running) {
1275                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1276                 /* wait for the previous p2p_scan to complete */
1277                 res = 0; /* do not report failure */
1278         } else if (res != 0) {
1279                 p2p_dbg(p2p, "Failed to start p2p_scan");
1280                 p2p_set_state(p2p, P2P_IDLE);
1281                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1282         }
1283
1284         return res;
1285 }
1286
1287
1288 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1289 {
1290         p2p_dbg(p2p, "Stopping find");
1291         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1292         p2p_clear_timeout(p2p);
1293         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1294                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1295
1296         p2p->p2ps_seek_count = 0;
1297
1298         p2p_set_state(p2p, P2P_IDLE);
1299         p2p_free_req_dev_types(p2p);
1300         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1301         if (p2p->go_neg_peer)
1302                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1303         p2p->go_neg_peer = NULL;
1304         p2p->sd_peer = NULL;
1305         p2p->invite_peer = NULL;
1306         p2p_stop_listen_for_freq(p2p, freq);
1307         p2p->send_action_in_progress = 0;
1308 }
1309
1310
1311 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1312 {
1313         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1314                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1315                 return;
1316         }
1317         if (p2p->in_listen) {
1318                 p2p->in_listen = 0;
1319                 p2p_clear_timeout(p2p);
1320         }
1321         if (p2p->drv_in_listen) {
1322                 /*
1323                  * The driver may not deliver callback to p2p_listen_end()
1324                  * when the operation gets canceled, so clear the internal
1325                  * variable that is tracking driver state.
1326                  */
1327                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1328                 p2p->drv_in_listen = 0;
1329         }
1330         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1331 }
1332
1333
1334 void p2p_stop_listen(struct p2p_data *p2p)
1335 {
1336         if (p2p->state != P2P_LISTEN_ONLY) {
1337                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1338                 return;
1339         }
1340
1341         p2p_stop_listen_for_freq(p2p, 0);
1342         p2p_set_state(p2p, P2P_IDLE);
1343 }
1344
1345
1346 void p2p_stop_find(struct p2p_data *p2p)
1347 {
1348         p2p->pending_listen_freq = 0;
1349         p2p_stop_find_for_freq(p2p, 0);
1350 }
1351
1352
1353 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1354                                     unsigned int force_freq,
1355                                     unsigned int pref_freq, int go)
1356 {
1357         u8 op_class, op_channel;
1358         unsigned int freq = force_freq ? force_freq : pref_freq;
1359
1360         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1361                 force_freq, pref_freq, go);
1362         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1363                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1364                 return -1;
1365         }
1366
1367         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1368             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1369                                           op_channel))) {
1370                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1371                         freq, op_class, op_channel);
1372                 return -1;
1373         }
1374
1375         p2p->op_reg_class = op_class;
1376         p2p->op_channel = op_channel;
1377
1378         if (force_freq) {
1379                 p2p->channels.reg_classes = 1;
1380                 p2p->channels.reg_class[0].channels = 1;
1381                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1382                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1383         } else {
1384                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1385                           sizeof(struct p2p_channels));
1386         }
1387
1388         return 0;
1389 }
1390
1391
1392 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1393 {
1394         u8 op_class, op_channel;
1395         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1396         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1397         const int op_classes_vht[] = { 128, 0 };
1398
1399         p2p_dbg(p2p, "Prepare channel best");
1400
1401         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1402             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1403             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1404             == 0) {
1405                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1406                 p2p->op_reg_class = op_class;
1407                 p2p->op_channel = op_channel;
1408         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1409                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1410                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1411                    == 0) {
1412                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1413                 p2p->op_reg_class = op_class;
1414                 p2p->op_channel = op_channel;
1415         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1416                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1417                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1418                                        &op_channel) == 0) {
1419                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1420                 p2p->op_reg_class = op_class;
1421                 p2p->op_channel = op_channel;
1422         } else if (p2p->cfg->num_pref_chan > 0 &&
1423                    p2p_channels_includes(&p2p->cfg->channels,
1424                                          p2p->cfg->pref_chan[0].op_class,
1425                                          p2p->cfg->pref_chan[0].chan)) {
1426                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1427                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1428                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1429         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1430                                       &p2p->op_reg_class, &p2p->op_channel) ==
1431                    0) {
1432                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1433                         p2p->op_reg_class, p2p->op_channel);
1434         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1435                                       &p2p->op_reg_class, &p2p->op_channel) ==
1436                    0) {
1437                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1438                         p2p->op_reg_class, p2p->op_channel);
1439         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1440                                       &p2p->op_reg_class, &p2p->op_channel) ==
1441                    0) {
1442                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1443                         p2p->op_reg_class, p2p->op_channel);
1444         } else if (p2p_channels_includes(&p2p->cfg->channels,
1445                                          p2p->cfg->op_reg_class,
1446                                          p2p->cfg->op_channel)) {
1447                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1448                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1449                 p2p->op_channel = p2p->cfg->op_channel;
1450         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1451                                              &p2p->op_reg_class,
1452                                              &p2p->op_channel) == 0) {
1453                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1454                         p2p->op_reg_class, p2p->op_channel);
1455         } else {
1456                 /* Select any random available channel from the first available
1457                  * operating class */
1458                 p2p_channel_select(&p2p->cfg->channels, NULL,
1459                                    &p2p->op_reg_class,
1460                                    &p2p->op_channel);
1461                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1462                         p2p->op_channel, p2p->op_reg_class);
1463         }
1464
1465         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1466                   sizeof(struct p2p_channels));
1467 }
1468
1469
1470 /**
1471  * p2p_prepare_channel - Select operating channel for GO Negotiation
1472  * @p2p: P2P module context from p2p_init()
1473  * @dev: Selected peer device
1474  * @force_freq: Forced frequency in MHz or 0 if not forced
1475  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1476  * @go: Whether the local end will be forced to be GO
1477  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1478  *
1479  * This function is used to do initial operating channel selection for GO
1480  * Negotiation prior to having received peer information. The selected channel
1481  * may be further optimized in p2p_reselect_channel() once the peer information
1482  * is available.
1483  */
1484 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1485                         unsigned int force_freq, unsigned int pref_freq, int go)
1486 {
1487         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1488                 force_freq, pref_freq, go);
1489         if (force_freq || pref_freq) {
1490                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1491                     0)
1492                         return -1;
1493         } else {
1494                 p2p_prepare_channel_best(p2p);
1495         }
1496         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1497         if (go)
1498                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1499         else if (!force_freq)
1500                 p2p_channels_union_inplace(&p2p->channels,
1501                                            &p2p->cfg->cli_channels);
1502         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1503
1504         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1505                 p2p->op_reg_class, p2p->op_channel,
1506                 force_freq ? " (forced)" : "");
1507
1508         if (force_freq)
1509                 dev->flags |= P2P_DEV_FORCE_FREQ;
1510         else
1511                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1512
1513         return 0;
1514 }
1515
1516
1517 static void p2p_set_dev_persistent(struct p2p_device *dev,
1518                                    int persistent_group)
1519 {
1520         switch (persistent_group) {
1521         case 0:
1522                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1523                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1524                 break;
1525         case 1:
1526                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1527                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1528                 break;
1529         case 2:
1530                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1531                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1532                 break;
1533         }
1534 }
1535
1536
1537 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1538                 enum p2p_wps_method wps_method,
1539                 int go_intent, const u8 *own_interface_addr,
1540                 unsigned int force_freq, int persistent_group,
1541                 const u8 *force_ssid, size_t force_ssid_len,
1542                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1543 {
1544         struct p2p_device *dev;
1545
1546         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1547                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1548                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1549                 "oob_pw_id=%u",
1550                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1551                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1552
1553         dev = p2p_get_device(p2p, peer_addr);
1554         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1555                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1556                         MAC2STR(peer_addr));
1557                 return -1;
1558         }
1559
1560         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1561                                 go_intent == 15) < 0)
1562                 return -1;
1563
1564         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1565                 if (!(dev->info.dev_capab &
1566                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1567                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1568                                 " that is in a group and is not discoverable",
1569                                 MAC2STR(peer_addr));
1570                         return -1;
1571                 }
1572                 if (dev->oper_freq <= 0) {
1573                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1574                                 " with incomplete information",
1575                                 MAC2STR(peer_addr));
1576                         return -1;
1577                 }
1578
1579                 /*
1580                  * First, try to connect directly. If the peer does not
1581                  * acknowledge frames, assume it is sleeping and use device
1582                  * discoverability via the GO at that point.
1583                  */
1584         }
1585
1586         p2p->ssid_set = 0;
1587         if (force_ssid) {
1588                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1589                                   force_ssid, force_ssid_len);
1590                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1591                 p2p->ssid_len = force_ssid_len;
1592                 p2p->ssid_set = 1;
1593         }
1594
1595         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1596         dev->flags &= ~P2P_DEV_USER_REJECTED;
1597         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1598         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1599         if (pd_before_go_neg)
1600                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1601         else {
1602                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1603                 /*
1604                  * Assign dialog token and tie breaker here to use the same
1605                  * values in each retry within the same GO Negotiation exchange.
1606                  */
1607                 dev->dialog_token++;
1608                 if (dev->dialog_token == 0)
1609                         dev->dialog_token = 1;
1610                 dev->tie_breaker = p2p->next_tie_breaker;
1611                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1612         }
1613         dev->connect_reqs = 0;
1614         dev->go_neg_req_sent = 0;
1615         dev->go_state = UNKNOWN_GO;
1616         p2p_set_dev_persistent(dev, persistent_group);
1617         p2p->go_intent = go_intent;
1618         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1619
1620         if (p2p->state != P2P_IDLE)
1621                 p2p_stop_find(p2p);
1622
1623         if (p2p->after_scan_tx) {
1624                 /*
1625                  * We need to drop the pending frame to avoid issues with the
1626                  * new GO Negotiation, e.g., when the pending frame was from a
1627                  * previous attempt at starting a GO Negotiation.
1628                  */
1629                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1630                 os_free(p2p->after_scan_tx);
1631                 p2p->after_scan_tx = NULL;
1632         }
1633
1634         dev->wps_method = wps_method;
1635         dev->oob_pw_id = oob_pw_id;
1636         dev->status = P2P_SC_SUCCESS;
1637
1638         if (p2p->p2p_scan_running) {
1639                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1640                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1641                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1642                 return 0;
1643         }
1644         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1645
1646         return p2p_connect_send(p2p, dev);
1647 }
1648
1649
1650 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1651                   enum p2p_wps_method wps_method,
1652                   int go_intent, const u8 *own_interface_addr,
1653                   unsigned int force_freq, int persistent_group,
1654                   const u8 *force_ssid, size_t force_ssid_len,
1655                   unsigned int pref_freq, u16 oob_pw_id)
1656 {
1657         struct p2p_device *dev;
1658
1659         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1660                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1661                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1662                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1663                 wps_method, persistent_group, oob_pw_id);
1664
1665         dev = p2p_get_device(p2p, peer_addr);
1666         if (dev == NULL) {
1667                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1668                         MAC2STR(peer_addr));
1669                 return -1;
1670         }
1671
1672         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1673                                 15) < 0)
1674                 return -1;
1675
1676         p2p->ssid_set = 0;
1677         if (force_ssid) {
1678                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1679                                   force_ssid, force_ssid_len);
1680                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1681                 p2p->ssid_len = force_ssid_len;
1682                 p2p->ssid_set = 1;
1683         }
1684
1685         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1686         dev->flags &= ~P2P_DEV_USER_REJECTED;
1687         dev->go_neg_req_sent = 0;
1688         dev->go_state = UNKNOWN_GO;
1689         p2p_set_dev_persistent(dev, persistent_group);
1690         p2p->go_intent = go_intent;
1691         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1692
1693         dev->wps_method = wps_method;
1694         dev->oob_pw_id = oob_pw_id;
1695         dev->status = P2P_SC_SUCCESS;
1696
1697         return 0;
1698 }
1699
1700
1701 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1702                       struct p2p_device *dev, struct p2p_message *msg)
1703 {
1704         os_get_reltime(&dev->last_seen);
1705
1706         p2p_copy_wps_info(p2p, dev, 0, msg);
1707
1708         if (msg->listen_channel) {
1709                 int freq;
1710                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1711                                            msg->listen_channel[4]);
1712                 if (freq < 0) {
1713                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1714                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1715                                 msg->listen_channel[0],
1716                                 msg->listen_channel[1],
1717                                 msg->listen_channel[2],
1718                                 msg->listen_channel[3],
1719                                 msg->listen_channel[4]);
1720                 } else {
1721                         p2p_dbg(p2p, "Update peer " MACSTR
1722                                 " Listen channel: %u -> %u MHz",
1723                                 MAC2STR(dev->info.p2p_device_addr),
1724                                 dev->listen_freq, freq);
1725                         dev->listen_freq = freq;
1726                 }
1727         }
1728
1729         if (msg->wfd_subelems) {
1730                 wpabuf_free(dev->info.wfd_subelems);
1731                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1732         }
1733
1734         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1735                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1736                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1737         } else {
1738                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1739                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1740                         "listen_freq=%d",
1741                         MAC2STR(dev->info.p2p_device_addr),
1742                         dev->info.dev_capab, dev->info.group_capab,
1743                         dev->info.device_name, dev->listen_freq);
1744         }
1745
1746         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1747
1748         if (dev->flags & P2P_DEV_USER_REJECTED) {
1749                 p2p_dbg(p2p, "Do not report rejected device");
1750                 return;
1751         }
1752
1753         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1754                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1755         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1756 }
1757
1758
1759 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1760 {
1761         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1762         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1763         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1764                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1765         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1766 }
1767
1768
1769 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1770 {
1771         if (p2p->ssid_set) {
1772                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1773                 params->ssid_len = p2p->ssid_len;
1774         } else {
1775                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1776         }
1777         p2p->ssid_set = 0;
1778
1779         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1780         return 0;
1781 }
1782
1783
1784 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1785 {
1786         struct p2p_go_neg_results res;
1787         int go = peer->go_state == LOCAL_GO;
1788         struct p2p_channels intersection;
1789
1790         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1791                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1792
1793         os_memset(&res, 0, sizeof(res));
1794         res.role_go = go;
1795         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1796         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1797         res.wps_method = peer->wps_method;
1798         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1799                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1800                         res.persistent_group = 2;
1801                 else
1802                         res.persistent_group = 1;
1803         }
1804
1805         if (go) {
1806                 /* Setup AP mode for WPS provisioning */
1807                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1808                                                p2p->op_channel);
1809                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1810                 res.ssid_len = p2p->ssid_len;
1811                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1812         } else {
1813                 res.freq = peer->oper_freq;
1814                 if (p2p->ssid_len) {
1815                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1816                         res.ssid_len = p2p->ssid_len;
1817                 }
1818         }
1819
1820         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1821         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1822         p2p_channels_intersect(&p2p->channels, &peer->channels,
1823                                &intersection);
1824         if (go) {
1825                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1826                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1827                                   &intersection);
1828         }
1829
1830         p2p_channels_to_freqs(&intersection, res.freq_list,
1831                               P2P_MAX_CHANNELS);
1832
1833         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1834
1835         p2p_clear_timeout(p2p);
1836         p2p->ssid_set = 0;
1837         peer->go_neg_req_sent = 0;
1838         peer->wps_method = WPS_NOT_READY;
1839         peer->oob_pw_id = 0;
1840         wpabuf_free(peer->go_neg_conf);
1841         peer->go_neg_conf = NULL;
1842
1843         p2p_set_state(p2p, P2P_PROVISIONING);
1844         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1845 }
1846
1847
1848 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1849                               const u8 *data, size_t len, int rx_freq)
1850 {
1851         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1852         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1853
1854         if (len < 1)
1855                 return;
1856
1857         switch (data[0]) {
1858         case P2P_GO_NEG_REQ:
1859                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1860                 break;
1861         case P2P_GO_NEG_RESP:
1862                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1863                 break;
1864         case P2P_GO_NEG_CONF:
1865                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1866                 break;
1867         case P2P_INVITATION_REQ:
1868                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1869                                            rx_freq);
1870                 break;
1871         case P2P_INVITATION_RESP:
1872                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1873                 break;
1874         case P2P_PROV_DISC_REQ:
1875                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1876                 break;
1877         case P2P_PROV_DISC_RESP:
1878                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1879                 break;
1880         case P2P_DEV_DISC_REQ:
1881                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1882                 break;
1883         case P2P_DEV_DISC_RESP:
1884                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1885                 break;
1886         default:
1887                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1888                         data[0]);
1889                 break;
1890         }
1891 }
1892
1893
1894 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1895                                  const u8 *sa, const u8 *bssid, const u8 *data,
1896                                  size_t len, int freq)
1897 {
1898         if (len < 1)
1899                 return;
1900
1901         switch (data[0]) {
1902         case WLAN_PA_VENDOR_SPECIFIC:
1903                 data++;
1904                 len--;
1905                 if (len < 4)
1906                         return;
1907                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1908                         return;
1909
1910                 data += 4;
1911                 len -= 4;
1912
1913                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1914                 break;
1915         case WLAN_PA_GAS_INITIAL_REQ:
1916                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1917                 break;
1918         case WLAN_PA_GAS_INITIAL_RESP:
1919                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1920                 break;
1921         case WLAN_PA_GAS_COMEBACK_REQ:
1922                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1923                 break;
1924         case WLAN_PA_GAS_COMEBACK_RESP:
1925                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1926                 break;
1927         }
1928 }
1929
1930
1931 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1932                    const u8 *bssid, u8 category,
1933                    const u8 *data, size_t len, int freq)
1934 {
1935         if (category == WLAN_ACTION_PUBLIC) {
1936                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1937                 return;
1938         }
1939
1940         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1941                 return;
1942
1943         if (len < 4)
1944                 return;
1945
1946         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1947                 return;
1948         data += 4;
1949         len -= 4;
1950
1951         /* P2P action frame */
1952         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1953         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1954
1955         if (len < 1)
1956                 return;
1957         switch (data[0]) {
1958         case P2P_NOA:
1959                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1960                 /* TODO */
1961                 break;
1962         case P2P_PRESENCE_REQ:
1963                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1964                 break;
1965         case P2P_PRESENCE_RESP:
1966                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1967                 break;
1968         case P2P_GO_DISC_REQ:
1969                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1970                 break;
1971         default:
1972                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1973                 break;
1974         }
1975 }
1976
1977
1978 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1979 {
1980         struct p2p_data *p2p = eloop_ctx;
1981         if (p2p->go_neg_peer == NULL)
1982                 return;
1983         if (p2p->pending_listen_freq) {
1984                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1985                 p2p->pending_listen_freq = 0;
1986         }
1987         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1988         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1989         /*
1990          * Set new timeout to make sure a previously set one does not expire
1991          * too quickly while waiting for the GO Negotiation to complete.
1992          */
1993         p2p_set_timeout(p2p, 0, 500000);
1994         p2p_connect_send(p2p, p2p->go_neg_peer);
1995 }
1996
1997
1998 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1999 {
2000         struct p2p_data *p2p = eloop_ctx;
2001         if (p2p->invite_peer == NULL)
2002                 return;
2003         if (p2p->pending_listen_freq) {
2004                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
2005                 p2p->pending_listen_freq = 0;
2006         }
2007         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
2008         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
2009                         p2p->invite_dev_pw_id);
2010 }
2011
2012
2013 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2014                                        const u8 *ie, size_t ie_len)
2015 {
2016         struct p2p_message msg;
2017         struct p2p_device *dev;
2018
2019         os_memset(&msg, 0, sizeof(msg));
2020         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2021         {
2022                 p2p_parse_free(&msg);
2023                 return; /* not a P2P probe */
2024         }
2025
2026         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2027             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2028             != 0) {
2029                 /* The Probe Request is not part of P2P Device Discovery. It is
2030                  * not known whether the source address of the frame is the P2P
2031                  * Device Address or P2P Interface Address. Do not add a new
2032                  * peer entry based on this frames.
2033                  */
2034                 p2p_parse_free(&msg);
2035                 return;
2036         }
2037
2038         dev = p2p_get_device(p2p, addr);
2039         if (dev) {
2040                 if (dev->country[0] == 0 && msg.listen_channel)
2041                         os_memcpy(dev->country, msg.listen_channel, 3);
2042                 os_get_reltime(&dev->last_seen);
2043                 p2p_parse_free(&msg);
2044                 return; /* already known */
2045         }
2046
2047         dev = p2p_create_device(p2p, addr);
2048         if (dev == NULL) {
2049                 p2p_parse_free(&msg);
2050                 return;
2051         }
2052
2053         os_get_reltime(&dev->last_seen);
2054         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2055
2056         if (msg.listen_channel) {
2057                 os_memcpy(dev->country, msg.listen_channel, 3);
2058                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2059                                                        msg.listen_channel[4]);
2060         }
2061
2062         p2p_copy_wps_info(p2p, dev, 1, &msg);
2063
2064         if (msg.wfd_subelems) {
2065                 wpabuf_free(dev->info.wfd_subelems);
2066                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2067         }
2068
2069         p2p_parse_free(&msg);
2070
2071         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2072                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2073                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2074                 dev->info.group_capab, dev->info.device_name,
2075                 dev->listen_freq);
2076 }
2077
2078
2079 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2080                                                 const u8 *addr,
2081                                                 struct p2p_message *msg)
2082 {
2083         struct p2p_device *dev;
2084
2085         dev = p2p_get_device(p2p, addr);
2086         if (dev) {
2087                 os_get_reltime(&dev->last_seen);
2088                 return dev; /* already known */
2089         }
2090
2091         dev = p2p_create_device(p2p, addr);
2092         if (dev == NULL)
2093                 return NULL;
2094
2095         p2p_add_dev_info(p2p, addr, dev, msg);
2096
2097         return dev;
2098 }
2099
2100
2101 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2102 {
2103         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2104                 return 1;
2105         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2106             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2107             WPA_GET_BE16(&req_dev_type[6]) == 0)
2108                 return 1; /* Category match with wildcard OUI/sub-category */
2109         return 0;
2110 }
2111
2112
2113 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2114                         size_t num_req_dev_type)
2115 {
2116         size_t i;
2117         for (i = 0; i < num_req_dev_type; i++) {
2118                 if (dev_type_match(dev_type, req_dev_type[i]))
2119                         return 1;
2120         }
2121         return 0;
2122 }
2123
2124
2125 /**
2126  * p2p_match_dev_type - Match local device type with requested type
2127  * @p2p: P2P module context from p2p_init()
2128  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2129  * Returns: 1 on match, 0 on mismatch
2130  *
2131  * This function can be used to match the Requested Device Type attribute in
2132  * WPS IE with the local device types for deciding whether to reply to a Probe
2133  * Request frame.
2134  */
2135 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2136 {
2137         struct wps_parse_attr attr;
2138         size_t i;
2139
2140         if (wps_parse_msg(wps, &attr))
2141                 return 1; /* assume no Requested Device Type attributes */
2142
2143         if (attr.num_req_dev_type == 0)
2144                 return 1; /* no Requested Device Type attributes -> match */
2145
2146         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2147                                 attr.num_req_dev_type))
2148                 return 1; /* Own Primary Device Type matches */
2149
2150         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2151                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2152                                         attr.req_dev_type,
2153                                         attr.num_req_dev_type))
2154                         return 1; /* Own Secondary Device Type matches */
2155         }
2156
2157         /* No matching device type found */
2158         return 0;
2159 }
2160
2161
2162 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2163 {
2164         struct wpabuf *buf;
2165         u8 *len;
2166         int pw_id = -1;
2167         size_t extra = 0;
2168
2169 #ifdef CONFIG_WIFI_DISPLAY
2170         if (p2p->wfd_ie_probe_resp)
2171                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2172 #endif /* CONFIG_WIFI_DISPLAY */
2173
2174         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2175                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2176
2177         if (p2p->query_count)
2178                 extra += MAX_SVC_ADV_IE_LEN;
2179
2180         buf = wpabuf_alloc(1000 + extra);
2181         if (buf == NULL)
2182                 return NULL;
2183
2184         if (p2p->go_neg_peer) {
2185                 /* Advertise immediate availability of WPS credential */
2186                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2187         }
2188
2189         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2190                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2191                 wpabuf_free(buf);
2192                 return NULL;
2193         }
2194
2195 #ifdef CONFIG_WIFI_DISPLAY
2196         if (p2p->wfd_ie_probe_resp)
2197                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2198 #endif /* CONFIG_WIFI_DISPLAY */
2199
2200         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2201                 wpabuf_put_buf(buf,
2202                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2203
2204         /* P2P IE */
2205         len = p2p_buf_add_ie_hdr(buf);
2206         p2p_buf_add_capability(buf, p2p->dev_capab &
2207                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2208         if (p2p->ext_listen_interval)
2209                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2210                                               p2p->ext_listen_interval);
2211         p2p_buf_add_device_info(buf, p2p, NULL);
2212         p2p_buf_update_ie_hdr(buf, len);
2213
2214         if (p2p->query_count) {
2215                 p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2216                                              p2p->query_hash,
2217                                              p2p->p2ps_adv_list);
2218         }
2219
2220         return buf;
2221 }
2222
2223
2224 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2225 {
2226         struct p2ps_advertisement *adv_data;
2227
2228         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2229
2230         /* Wildcard always matches if we have actual services */
2231         if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2232                 return p2p->p2ps_adv_list != NULL;
2233
2234         adv_data = p2p->p2ps_adv_list;
2235         while (adv_data) {
2236                 p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2237                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2238                         return 1;
2239                 adv_data = adv_data->next;
2240         }
2241
2242         return 0;
2243 }
2244
2245
2246 static enum p2p_probe_req_status
2247 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2248                 const u8 *bssid, const u8 *ie, size_t ie_len,
2249                 unsigned int rx_freq)
2250 {
2251         struct ieee802_11_elems elems;
2252         struct wpabuf *buf;
2253         struct ieee80211_mgmt *resp;
2254         struct p2p_message msg;
2255         struct wpabuf *ies;
2256         u8 channel, op_class;
2257
2258         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2259             ParseFailed) {
2260                 /* Ignore invalid Probe Request frames */
2261                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2262                 return P2P_PREQ_MALFORMED;
2263         }
2264
2265         if (elems.p2p == NULL) {
2266                 /* not a P2P probe - ignore it */
2267                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2268                 return P2P_PREQ_NOT_P2P;
2269         }
2270
2271         if (dst && !is_broadcast_ether_addr(dst) &&
2272             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2273                 /* Not sent to the broadcast address or our P2P Device Address
2274                  */
2275                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2276                         MAC2STR(dst));
2277                 return P2P_PREQ_NOT_PROCESSED;
2278         }
2279
2280         if (bssid && !is_broadcast_ether_addr(bssid)) {
2281                 /* Not sent to the Wildcard BSSID */
2282                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2283                         MAC2STR(bssid));
2284                 return P2P_PREQ_NOT_PROCESSED;
2285         }
2286
2287         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2288             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2289             0) {
2290                 /* not using P2P Wildcard SSID - ignore */
2291                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2292                 return P2P_PREQ_NOT_PROCESSED;
2293         }
2294
2295         if (supp_rates_11b_only(&elems)) {
2296                 /* Indicates support for 11b rates only */
2297                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2298                 return P2P_PREQ_NOT_P2P;
2299         }
2300
2301         os_memset(&msg, 0, sizeof(msg));
2302         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2303                 /* Could not parse P2P attributes */
2304                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2305                 return P2P_PREQ_NOT_P2P;
2306         }
2307
2308         if (msg.service_hash && msg.service_hash_count) {
2309                 const u8 *hash = msg.service_hash;
2310                 u8 *dest = p2p->query_hash;
2311                 u8 i;
2312                 int p2ps_svc_found = 0;
2313
2314                 p2p->query_count = 0;
2315                 for (i = 0; i < msg.service_hash_count; i++) {
2316                         if (p2p_service_find_asp(p2p, hash)) {
2317                                 p2ps_svc_found = 1;
2318
2319                                 if (!os_memcmp(hash, p2p->wild_card_hash,
2320                                                P2PS_HASH_LEN)) {
2321                                         /* We found match(es) but wildcard
2322                                          * will return all */
2323                                         p2p->query_count = 1;
2324                                         os_memcpy(p2p->query_hash, hash,
2325                                                   P2PS_HASH_LEN);
2326                                         break;
2327                                 }
2328
2329                                 /* Save each matching hash */
2330                                 if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2331                                         os_memcpy(dest, hash, P2PS_HASH_LEN);
2332                                         dest += P2PS_HASH_LEN;
2333                                         p2p->query_count++;
2334                                 } else {
2335                                         /* We found match(es) but too many to
2336                                          * return all */
2337                                         p2p->query_count = 0;
2338                                         break;
2339                                 }
2340                         }
2341                         hash += P2PS_HASH_LEN;
2342                 }
2343
2344                 p2p_dbg(p2p, "ASP adv found: %d", p2ps_svc_found);
2345
2346                 /* Probed hash unknown */
2347                 if (!p2ps_svc_found) {
2348                         p2p_parse_free(&msg);
2349                         return P2P_PREQ_NOT_PROCESSED;
2350                 }
2351         } else {
2352                 /* This is not a P2PS Probe Request */
2353                 p2p->query_count = 0;
2354                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2355
2356                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2357                         /* not in Listen state - ignore Probe Request */
2358                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2359                                 p2p->in_listen, p2p->drv_in_listen);
2360                         p2p_parse_free(&msg);
2361                         return P2P_PREQ_NOT_LISTEN;
2362                 }
2363         }
2364
2365         if (msg.device_id &&
2366             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2367                 /* Device ID did not match */
2368                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2369                         MAC2STR(msg.device_id));
2370                 p2p_parse_free(&msg);
2371                 return P2P_PREQ_NOT_PROCESSED;
2372         }
2373
2374         /* Check Requested Device Type match */
2375         if (msg.wps_attributes &&
2376             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2377                 /* No match with Requested Device Type */
2378                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2379                 p2p_parse_free(&msg);
2380                 return P2P_PREQ_NOT_PROCESSED;
2381         }
2382         p2p_parse_free(&msg);
2383
2384         if (!p2p->cfg->send_probe_resp) {
2385                 /* Response generated elsewhere */
2386                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2387                 return P2P_PREQ_NOT_PROCESSED;
2388         }
2389
2390         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2391
2392         /*
2393          * We do not really have a specific BSS that this frame is advertising,
2394          * so build a frame that has some information in valid format. This is
2395          * really only used for discovery purposes, not to learn exact BSS
2396          * parameters.
2397          */
2398         ies = p2p_build_probe_resp_ies(p2p);
2399         if (ies == NULL)
2400                 return P2P_PREQ_NOT_PROCESSED;
2401
2402         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2403         if (buf == NULL) {
2404                 wpabuf_free(ies);
2405                 return P2P_PREQ_NOT_PROCESSED;
2406         }
2407
2408         resp = NULL;
2409         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2410
2411         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2412                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2413         os_memcpy(resp->da, addr, ETH_ALEN);
2414         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2415         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2416         resp->u.probe_resp.beacon_int = host_to_le16(100);
2417         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2418         resp->u.probe_resp.capab_info =
2419                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2420                              WLAN_CAPABILITY_PRIVACY |
2421                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2422
2423         wpabuf_put_u8(buf, WLAN_EID_SSID);
2424         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2425         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2426
2427         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2428         wpabuf_put_u8(buf, 8);
2429         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2430         wpabuf_put_u8(buf, 90 / 5);
2431         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2432         wpabuf_put_u8(buf, 180 / 5);
2433         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2434         wpabuf_put_u8(buf, 360 / 5);
2435         wpabuf_put_u8(buf, 480 / 5);
2436         wpabuf_put_u8(buf, 540 / 5);
2437
2438         if (!rx_freq) {
2439                 channel = p2p->cfg->channel;
2440         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2441                 wpabuf_free(ies);
2442                 wpabuf_free(buf);
2443                 return P2P_PREQ_NOT_PROCESSED;
2444         }
2445
2446         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2447         wpabuf_put_u8(buf, 1);
2448         wpabuf_put_u8(buf, channel);
2449
2450         wpabuf_put_buf(buf, ies);
2451         wpabuf_free(ies);
2452
2453         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq);
2454
2455         wpabuf_free(buf);
2456
2457         return P2P_PREQ_PROCESSED;
2458 }
2459
2460
2461 enum p2p_probe_req_status
2462 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2463                  const u8 *bssid, const u8 *ie, size_t ie_len,
2464                  unsigned int rx_freq)
2465 {
2466         enum p2p_probe_req_status res;
2467
2468         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2469
2470         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2471         p2p->query_count = 0;
2472
2473         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2474                 return res;
2475
2476         /*
2477          * Activate a pending GO Negotiation/Invite flow if a received Probe
2478          * Request frame is from an expected peer. Some devices may share the
2479          * same address for P2P and non-P2P STA running simultaneously. The
2480          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2481          * return values verified above ensure we are handling a Probe Request
2482          * frame from a P2P peer.
2483          */
2484         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2485             p2p->go_neg_peer &&
2486             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2487             == 0 &&
2488             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2489                 /* Received a Probe Request from GO Negotiation peer */
2490                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2491                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2492                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2493                 return res;
2494         }
2495
2496         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2497             p2p->invite_peer &&
2498             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2499             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2500             == 0) {
2501                 /* Received a Probe Request from Invite peer */
2502                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2503                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2504                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2505                 return res;
2506         }
2507
2508         return res;
2509 }
2510
2511
2512 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2513                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2514 {
2515         struct wpabuf *tmp;
2516         u8 *lpos;
2517         size_t tmplen;
2518         int res;
2519         u8 group_capab;
2520         struct p2p_message msg;
2521
2522         if (p2p_ie == NULL)
2523                 return 0; /* WLAN AP is not a P2P manager */
2524
2525         os_memset(&msg, 0, sizeof(msg));
2526         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2527                 return 0;
2528
2529         p2p_dbg(p2p, "BSS P2P manageability %s",
2530                 msg.manageability ? "enabled" : "disabled");
2531
2532         if (!msg.manageability)
2533                 return 0;
2534
2535         /*
2536          * (Re)Association Request - P2P IE
2537          * P2P Capability attribute (shall be present)
2538          * P2P Interface attribute (present if concurrent device and
2539          *      P2P Management is enabled)
2540          */
2541         tmp = wpabuf_alloc(200);
2542         if (tmp == NULL)
2543                 return -1;
2544
2545         lpos = p2p_buf_add_ie_hdr(tmp);
2546         group_capab = 0;
2547         if (p2p->num_groups > 0) {
2548                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2549                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2550                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2551                     p2p->cross_connect)
2552                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2553         }
2554         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2555         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2556             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2557                 p2p_buf_add_p2p_interface(tmp, p2p);
2558         p2p_buf_update_ie_hdr(tmp, lpos);
2559
2560         tmplen = wpabuf_len(tmp);
2561         if (tmplen > len)
2562                 res = -1;
2563         else {
2564                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2565                 res = tmplen;
2566         }
2567         wpabuf_free(tmp);
2568
2569         return res;
2570 }
2571
2572
2573 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2574                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2575 {
2576         struct wpabuf *tmp;
2577         u8 *lpos;
2578         struct p2p_device *peer;
2579         size_t tmplen;
2580         int res;
2581         size_t extra = 0;
2582
2583         if (!p2p_group)
2584                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2585
2586 #ifdef CONFIG_WIFI_DISPLAY
2587         if (p2p->wfd_ie_assoc_req)
2588                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2589 #endif /* CONFIG_WIFI_DISPLAY */
2590
2591         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2592                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2593
2594         /*
2595          * (Re)Association Request - P2P IE
2596          * P2P Capability attribute (shall be present)
2597          * Extended Listen Timing (may be present)
2598          * P2P Device Info attribute (shall be present)
2599          */
2600         tmp = wpabuf_alloc(200 + extra);
2601         if (tmp == NULL)
2602                 return -1;
2603
2604 #ifdef CONFIG_WIFI_DISPLAY
2605         if (p2p->wfd_ie_assoc_req)
2606                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2607 #endif /* CONFIG_WIFI_DISPLAY */
2608
2609         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2610                 wpabuf_put_buf(tmp,
2611                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2612
2613         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2614
2615         lpos = p2p_buf_add_ie_hdr(tmp);
2616         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2617         if (p2p->ext_listen_interval)
2618                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2619                                               p2p->ext_listen_interval);
2620         p2p_buf_add_device_info(tmp, p2p, peer);
2621         p2p_buf_update_ie_hdr(tmp, lpos);
2622
2623         tmplen = wpabuf_len(tmp);
2624         if (tmplen > len)
2625                 res = -1;
2626         else {
2627                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2628                 res = tmplen;
2629         }
2630         wpabuf_free(tmp);
2631
2632         return res;
2633 }
2634
2635
2636 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2637 {
2638         struct wpabuf *p2p_ie;
2639         int ret;
2640
2641         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2642         if (p2p_ie == NULL)
2643                 return 0;
2644
2645         ret = p2p_attr_text(p2p_ie, buf, end);
2646         wpabuf_free(p2p_ie);
2647         return ret;
2648 }
2649
2650
2651 struct p2ps_advertisement *
2652 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2653 {
2654         struct p2ps_advertisement *adv_data;
2655
2656         if (!p2p)
2657                 return NULL;
2658
2659         adv_data = p2p->p2ps_adv_list;
2660         while (adv_data) {
2661                 if (adv_data->id == adv_id)
2662                         return adv_data;
2663                 adv_data = adv_data->next;
2664         }
2665
2666         return NULL;
2667 }
2668
2669
2670 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2671 {
2672         struct p2ps_advertisement *adv_data;
2673         struct p2ps_advertisement **prior;
2674
2675         if (!p2p)
2676                 return -1;
2677
2678         adv_data = p2p->p2ps_adv_list;
2679         prior = &p2p->p2ps_adv_list;
2680         while (adv_data) {
2681                 if (adv_data->id == adv_id) {
2682                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2683                         *prior = adv_data->next;
2684                         os_free(adv_data);
2685                         return 0;
2686                 }
2687                 prior = &adv_data->next;
2688                 adv_data = adv_data->next;
2689         }
2690
2691         return -1;
2692 }
2693
2694
2695 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2696                         const char *adv_str, u8 svc_state, u16 config_methods,
2697                         const char *svc_info)
2698 {
2699         struct p2ps_advertisement *adv_data, *tmp, **prev;
2700         u8 buf[P2PS_HASH_LEN];
2701         size_t adv_data_len, adv_len, info_len = 0;
2702
2703         if (!p2p || !adv_str || !adv_str[0])
2704                 return -1;
2705
2706         if (!(config_methods & p2p->cfg->config_methods)) {
2707                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2708                         config_methods, p2p->cfg->config_methods);
2709                 return -1;
2710         }
2711
2712         if (!p2ps_gen_hash(p2p, adv_str, buf))
2713                 return -1;
2714
2715         if (svc_info)
2716                 info_len = os_strlen(svc_info);
2717         adv_len = os_strlen(adv_str);
2718         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2719                 info_len + 1;
2720
2721         adv_data = os_zalloc(adv_data_len);
2722         if (!adv_data)
2723                 return -1;
2724
2725         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2726         adv_data->id = adv_id;
2727         adv_data->state = svc_state;
2728         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2729         adv_data->auto_accept = (u8) auto_accept;
2730         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2731
2732         if (svc_info && info_len) {
2733                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2734                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2735         }
2736
2737         /*
2738          * Group Advertisements by service string. They do not need to be
2739          * sorted, but groups allow easier Probe Response instance grouping
2740          */
2741         tmp = p2p->p2ps_adv_list;
2742         prev = &p2p->p2ps_adv_list;
2743         while (tmp) {
2744                 if (tmp->id == adv_data->id) {
2745                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2746                                 os_free(adv_data);
2747                                 return -1;
2748                         }
2749                         adv_data->next = tmp->next;
2750                         *prev = adv_data;
2751                         os_free(tmp);
2752                         goto inserted;
2753                 } else {
2754                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2755                                 adv_data->next = tmp->next;
2756                                 tmp->next = adv_data;
2757                                 goto inserted;
2758                         }
2759                 }
2760                 prev = &tmp->next;
2761                 tmp = tmp->next;
2762         }
2763
2764         /* No svc_name match found */
2765         adv_data->next = p2p->p2ps_adv_list;
2766         p2p->p2ps_adv_list = adv_data;
2767
2768 inserted:
2769         p2p_dbg(p2p,
2770                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2771                 adv_id, adv_data->config_methods, svc_state, adv_str);
2772
2773         return 0;
2774 }
2775
2776
2777 void p2p_service_flush_asp(struct p2p_data *p2p)
2778 {
2779         struct p2ps_advertisement *adv, *prev;
2780
2781         if (!p2p)
2782                 return;
2783
2784         adv = p2p->p2ps_adv_list;
2785         while (adv) {
2786                 prev = adv;
2787                 adv = adv->next;
2788                 os_free(prev);
2789         }
2790
2791         p2p->p2ps_adv_list = NULL;
2792         p2p_dbg(p2p, "All ASP advertisements flushed");
2793 }
2794
2795
2796 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2797 {
2798         struct p2p_message msg;
2799
2800         os_memset(&msg, 0, sizeof(msg));
2801         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2802                 return -1;
2803
2804         if (msg.p2p_device_addr) {
2805                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2806                 return 0;
2807         } else if (msg.device_id) {
2808                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2809                 return 0;
2810         }
2811         return -1;
2812 }
2813
2814
2815 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2816 {
2817         struct wpabuf *p2p_ie;
2818         int ret;
2819
2820         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2821                                              P2P_IE_VENDOR_TYPE);
2822         if (p2p_ie == NULL)
2823                 return -1;
2824         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2825         wpabuf_free(p2p_ie);
2826         return ret;
2827 }
2828
2829
2830 static void p2p_clear_go_neg(struct p2p_data *p2p)
2831 {
2832         p2p->go_neg_peer = NULL;
2833         p2p_clear_timeout(p2p);
2834         p2p_set_state(p2p, P2P_IDLE);
2835 }
2836
2837
2838 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2839 {
2840         if (p2p->go_neg_peer == NULL) {
2841                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2842                 return; /* No pending Group Formation */
2843         }
2844
2845         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2846             0) {
2847                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2848                         MACSTR " (GO Negotiation peer " MACSTR ")",
2849                         MAC2STR(mac_addr),
2850                         MAC2STR(p2p->go_neg_peer->intended_addr));
2851                 return; /* Ignore unexpected peer address */
2852         }
2853
2854         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2855                 MAC2STR(mac_addr));
2856
2857         p2p_clear_go_neg(p2p);
2858 }
2859
2860
2861 void p2p_group_formation_failed(struct p2p_data *p2p)
2862 {
2863         if (p2p->go_neg_peer == NULL) {
2864                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2865                 return; /* No pending Group Formation */
2866         }
2867
2868         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2869                 MAC2STR(p2p->go_neg_peer->intended_addr));
2870
2871         p2p_clear_go_neg(p2p);
2872 }
2873
2874
2875 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2876 {
2877         struct p2p_data *p2p;
2878
2879         if (cfg->max_peers < 1 ||
2880             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2881                 return NULL;
2882
2883         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2884         if (p2p == NULL)
2885                 return NULL;
2886         p2p->cfg = (struct p2p_config *) (p2p + 1);
2887         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2888         if (cfg->dev_name)
2889                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2890         if (cfg->manufacturer)
2891                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2892         if (cfg->model_name)
2893                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2894         if (cfg->model_number)
2895                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2896         if (cfg->serial_number)
2897                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2898         if (cfg->pref_chan) {
2899                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2900                                                 sizeof(struct p2p_channel));
2901                 if (p2p->cfg->pref_chan) {
2902                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2903                                   cfg->num_pref_chan *
2904                                   sizeof(struct p2p_channel));
2905                 } else
2906                         p2p->cfg->num_pref_chan = 0;
2907         }
2908
2909         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2910
2911         p2p->min_disc_int = 1;
2912         p2p->max_disc_int = 3;
2913         p2p->max_disc_tu = -1;
2914
2915         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2916                 p2p->next_tie_breaker = 0;
2917         p2p->next_tie_breaker &= 0x01;
2918         if (cfg->sd_request)
2919                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2920         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2921         if (cfg->concurrent_operations)
2922                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2923         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2924
2925         dl_list_init(&p2p->devices);
2926
2927         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2928                                p2p_expiration_timeout, p2p, NULL);
2929
2930         p2p->go_timeout = 100;
2931         p2p->client_timeout = 20;
2932         p2p->num_p2p_sd_queries = 0;
2933
2934         p2p_dbg(p2p, "initialized");
2935         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2936         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2937
2938         return p2p;
2939 }
2940
2941
2942 void p2p_deinit(struct p2p_data *p2p)
2943 {
2944 #ifdef CONFIG_WIFI_DISPLAY
2945         wpabuf_free(p2p->wfd_ie_beacon);
2946         wpabuf_free(p2p->wfd_ie_probe_req);
2947         wpabuf_free(p2p->wfd_ie_probe_resp);
2948         wpabuf_free(p2p->wfd_ie_assoc_req);
2949         wpabuf_free(p2p->wfd_ie_invitation);
2950         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2951         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2952         wpabuf_free(p2p->wfd_ie_go_neg);
2953         wpabuf_free(p2p->wfd_dev_info);
2954         wpabuf_free(p2p->wfd_assoc_bssid);
2955         wpabuf_free(p2p->wfd_coupled_sink_info);
2956 #endif /* CONFIG_WIFI_DISPLAY */
2957
2958         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2959         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2960         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2961         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2962         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2963         p2p_flush(p2p);
2964         p2p_free_req_dev_types(p2p);
2965         os_free(p2p->cfg->dev_name);
2966         os_free(p2p->cfg->manufacturer);
2967         os_free(p2p->cfg->model_name);
2968         os_free(p2p->cfg->model_number);
2969         os_free(p2p->cfg->serial_number);
2970         os_free(p2p->cfg->pref_chan);
2971         os_free(p2p->groups);
2972         p2ps_prov_free(p2p);
2973         wpabuf_free(p2p->sd_resp);
2974         os_free(p2p->after_scan_tx);
2975         p2p_remove_wps_vendor_extensions(p2p);
2976         os_free(p2p->no_go_freq.range);
2977         p2p_service_flush_asp(p2p);
2978
2979         os_free(p2p);
2980 }
2981
2982
2983 void p2p_flush(struct p2p_data *p2p)
2984 {
2985         struct p2p_device *dev, *prev;
2986         p2p_stop_find(p2p);
2987         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2988                               list) {
2989                 dl_list_del(&dev->list);
2990                 p2p_device_free(p2p, dev);
2991         }
2992         p2p_free_sd_queries(p2p);
2993         os_free(p2p->after_scan_tx);
2994         p2p->after_scan_tx = NULL;
2995 }
2996
2997
2998 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2999 {
3000         struct p2p_device *dev;
3001
3002         dev = p2p_get_device(p2p, addr);
3003         if (dev == NULL)
3004                 return -1;
3005
3006         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
3007
3008         if (p2p->go_neg_peer == dev) {
3009                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3010                 p2p->go_neg_peer = NULL;
3011         }
3012
3013         dev->wps_method = WPS_NOT_READY;
3014         dev->oob_pw_id = 0;
3015         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3016         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3017
3018         /* Check if after_scan_tx is for this peer. If so free it */
3019         if (p2p->after_scan_tx &&
3020             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3021                 os_free(p2p->after_scan_tx);
3022                 p2p->after_scan_tx = NULL;
3023         }
3024
3025         return 0;
3026 }
3027
3028
3029 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3030 {
3031         os_free(p2p->cfg->dev_name);
3032         if (dev_name) {
3033                 p2p->cfg->dev_name = os_strdup(dev_name);
3034                 if (p2p->cfg->dev_name == NULL)
3035                         return -1;
3036         } else
3037                 p2p->cfg->dev_name = NULL;
3038         return 0;
3039 }
3040
3041
3042 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3043 {
3044         os_free(p2p->cfg->manufacturer);
3045         p2p->cfg->manufacturer = NULL;
3046         if (manufacturer) {
3047                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3048                 if (p2p->cfg->manufacturer == NULL)
3049                         return -1;
3050         }
3051
3052         return 0;
3053 }
3054
3055
3056 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3057 {
3058         os_free(p2p->cfg->model_name);
3059         p2p->cfg->model_name = NULL;
3060         if (model_name) {
3061                 p2p->cfg->model_name = os_strdup(model_name);
3062                 if (p2p->cfg->model_name == NULL)
3063                         return -1;
3064         }
3065
3066         return 0;
3067 }
3068
3069
3070 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3071 {
3072         os_free(p2p->cfg->model_number);
3073         p2p->cfg->model_number = NULL;
3074         if (model_number) {
3075                 p2p->cfg->model_number = os_strdup(model_number);
3076                 if (p2p->cfg->model_number == NULL)
3077                         return -1;
3078         }
3079
3080         return 0;
3081 }
3082
3083
3084 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3085 {
3086         os_free(p2p->cfg->serial_number);
3087         p2p->cfg->serial_number = NULL;
3088         if (serial_number) {
3089                 p2p->cfg->serial_number = os_strdup(serial_number);
3090                 if (p2p->cfg->serial_number == NULL)
3091                         return -1;
3092         }
3093
3094         return 0;
3095 }
3096
3097
3098 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3099 {
3100         p2p->cfg->config_methods = config_methods;
3101 }
3102
3103
3104 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3105 {
3106         os_memcpy(p2p->cfg->uuid, uuid, 16);
3107 }
3108
3109
3110 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3111 {
3112         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3113         return 0;
3114 }
3115
3116
3117 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3118                           size_t num_dev_types)
3119 {
3120         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3121                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3122         p2p->cfg->num_sec_dev_types = num_dev_types;
3123         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3124         return 0;
3125 }
3126
3127
3128 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3129 {
3130         int i;
3131
3132         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3133                 wpabuf_free(p2p->wps_vendor_ext[i]);
3134                 p2p->wps_vendor_ext[i] = NULL;
3135         }
3136 }
3137
3138
3139 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3140                                  const struct wpabuf *vendor_ext)
3141 {
3142         int i;
3143
3144         if (vendor_ext == NULL)
3145                 return -1;
3146
3147         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3148                 if (p2p->wps_vendor_ext[i] == NULL)
3149                         break;
3150         }
3151         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3152                 return -1;
3153
3154         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3155         if (p2p->wps_vendor_ext[i] == NULL)
3156                 return -1;
3157
3158         return 0;
3159 }
3160
3161
3162 int p2p_set_country(struct p2p_data *p2p, const char *country)
3163 {
3164         os_memcpy(p2p->cfg->country, country, 3);
3165         return 0;
3166 }
3167
3168
3169 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3170 {
3171         if (dev->sd_pending_bcast_queries == 0) {
3172                 /* Initialize with total number of registered broadcast
3173                  * SD queries. */
3174                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3175         }
3176
3177         if (p2p_start_sd(p2p, dev) == 0)
3178                 return 1;
3179
3180         if (dev->req_config_methods &&
3181             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3182                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3183                         MACSTR " (config methods 0x%x)",
3184                         MAC2STR(dev->info.p2p_device_addr),
3185                         dev->req_config_methods);
3186                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3187                         return 1;
3188         }
3189
3190         return 0;
3191 }
3192
3193
3194 void p2p_continue_find(struct p2p_data *p2p)
3195 {
3196         struct p2p_device *dev;
3197         int found;
3198
3199         p2p_set_state(p2p, P2P_SEARCH);
3200
3201         /* Continue from the device following the last iteration */
3202         found = 0;
3203         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3204                 if (dev == p2p->last_p2p_find_oper) {
3205                         found = 1;
3206                         continue;
3207                 }
3208                 if (!found)
3209                         continue;
3210                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3211                         p2p->last_p2p_find_oper = dev;
3212                         return;
3213                 }
3214         }
3215
3216         /*
3217          * Wrap around to the beginning of the list and continue until the last
3218          * iteration device.
3219          */
3220         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3221                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3222                         p2p->last_p2p_find_oper = dev;
3223                         return;
3224                 }
3225                 if (dev == p2p->last_p2p_find_oper)
3226                         break;
3227         }
3228
3229         p2p_listen_in_find(p2p, 1);
3230 }
3231
3232
3233 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3234 {
3235         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3236                 success);
3237         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3238
3239         if (!success) {
3240                 if (p2p->sd_peer)
3241                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3242                 p2p->sd_peer = NULL;
3243                 if (p2p->state != P2P_IDLE)
3244                         p2p_continue_find(p2p);
3245                 return;
3246         }
3247
3248         if (p2p->sd_peer == NULL) {
3249                 p2p_dbg(p2p, "No SD peer entry known");
3250                 if (p2p->state != P2P_IDLE)
3251                         p2p_continue_find(p2p);
3252                 return;
3253         }
3254
3255         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3256                 /* Update the pending broadcast SD query count for this device
3257                  */
3258                 p2p->sd_peer->sd_pending_bcast_queries--;
3259
3260                 /*
3261                  * If there are no pending broadcast queries for this device,
3262                  * mark it as done (-1).
3263                  */
3264                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3265                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3266         }
3267
3268         /* Wait for response from the peer */
3269         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3270         p2p_set_timeout(p2p, 0, 200000);
3271 }
3272
3273
3274 /**
3275  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3276  * @p2p: P2P module context from p2p_init()
3277  */
3278 static void p2p_retry_pd(struct p2p_data *p2p)
3279 {
3280         struct p2p_device *dev;
3281
3282         /*
3283          * Retry the prov disc req attempt only for the peer that the user had
3284          * requested.
3285          */
3286
3287         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3288                 if (os_memcmp(p2p->pending_pd_devaddr,
3289                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3290                         continue;
3291                 if (!dev->req_config_methods)
3292                         continue;
3293
3294                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3295                         MACSTR " (config methods 0x%x)",
3296                         MAC2STR(dev->info.p2p_device_addr),
3297                         dev->req_config_methods);
3298                 p2p_send_prov_disc_req(p2p, dev,
3299                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3300                                        p2p->pd_force_freq);
3301                 return;
3302         }
3303 }
3304
3305
3306 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3307 {
3308         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3309                 success);
3310
3311         /*
3312          * Postpone resetting the pending action state till after we actually
3313          * time out. This allows us to take some action like notifying any
3314          * interested parties about no response to the request.
3315          *
3316          * When the timer (below) goes off we check in IDLE, SEARCH, or
3317          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3318          * requests in, if this was still pending and then raise notification.
3319          */
3320
3321         if (!success) {
3322                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3323
3324                 if (p2p->user_initiated_pd &&
3325                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3326                 {
3327                         /* Retry request from timeout to avoid busy loops */
3328                         p2p->pending_action_state = P2P_PENDING_PD;
3329                         p2p_set_timeout(p2p, 0, 50000);
3330                 } else if (p2p->state != P2P_IDLE)
3331                         p2p_continue_find(p2p);
3332                 else if (p2p->user_initiated_pd) {
3333                         p2p->pending_action_state = P2P_PENDING_PD;
3334                         p2p_set_timeout(p2p, 0, 300000);
3335                 }
3336                 return;
3337         }
3338
3339         /*
3340          * This postponing, of resetting pending_action_state, needs to be
3341          * done only for user initiated PD requests and not internal ones.
3342          */
3343         if (p2p->user_initiated_pd)
3344                 p2p->pending_action_state = P2P_PENDING_PD;
3345         else
3346                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3347
3348         /* Wait for response from the peer */
3349         if (p2p->state == P2P_SEARCH)
3350                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3351         p2p_set_timeout(p2p, 0, 200000);
3352 }
3353
3354
3355 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3356 {
3357         if (p2p->after_scan_tx_in_progress) {
3358                 p2p->after_scan_tx_in_progress = 0;
3359                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3360                     p2p_run_after_scan(p2p))
3361                         return 1;
3362                 if (p2p->state == P2P_SEARCH) {
3363                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3364                         p2p_continue_find(p2p);
3365                 }
3366         }
3367
3368         return 0;
3369 }
3370
3371
3372 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3373 {
3374         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3375                 success);
3376
3377         if (p2p->send_action_in_progress) {
3378                 p2p->send_action_in_progress = 0;
3379                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3380         }
3381
3382         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3383
3384         if (!success)
3385                 goto continue_search;
3386
3387         if (!p2p->cfg->prov_disc_resp_cb ||
3388             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3389                 goto continue_search;
3390
3391         p2p_dbg(p2p,
3392                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3393         return;
3394
3395 continue_search:
3396         p2p_check_after_scan_tx_continuation(p2p);
3397 }
3398
3399
3400 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3401                          struct os_reltime *rx_time, int level, const u8 *ies,
3402                          size_t ies_len)
3403 {
3404         if (os_reltime_before(rx_time, &p2p->find_start)) {
3405                 /*
3406                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3407                  * scan results for relatively long time. To avoid reporting
3408                  * stale information, update P2P peers only based on results
3409                  * that have based on frames received after the last p2p_find
3410                  * operation was started.
3411                  */
3412                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3413                         " (rx_time=%u.%06u)",
3414                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3415                         (unsigned int) rx_time->usec);
3416                 return 0;
3417         }
3418
3419         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3420
3421         return 0;
3422 }
3423
3424
3425 void p2p_scan_res_handled(struct p2p_data *p2p)
3426 {
3427         if (!p2p->p2p_scan_running) {
3428                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3429         }
3430         p2p->p2p_scan_running = 0;
3431         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3432
3433         if (p2p_run_after_scan(p2p))
3434                 return;
3435         if (p2p->state == P2P_SEARCH)
3436                 p2p_continue_find(p2p);
3437 }
3438
3439
3440 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3441 {
3442         u8 dev_capab;
3443         u8 *len;
3444
3445 #ifdef CONFIG_WIFI_DISPLAY
3446         if (p2p->wfd_ie_probe_req)
3447                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3448 #endif /* CONFIG_WIFI_DISPLAY */
3449
3450         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3451                 wpabuf_put_buf(ies,
3452                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3453
3454         len = p2p_buf_add_ie_hdr(ies);
3455
3456         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3457
3458         /* P2PS requires Probe Request frames to include SD bit */
3459         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3460                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3461
3462         p2p_buf_add_capability(ies, dev_capab, 0);
3463
3464         if (dev_id)
3465                 p2p_buf_add_device_id(ies, dev_id);
3466         if (p2p->cfg->reg_class && p2p->cfg->channel)
3467                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3468                                            p2p->cfg->reg_class,
3469                                            p2p->cfg->channel);
3470         if (p2p->ext_listen_interval)
3471                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3472                                               p2p->ext_listen_interval);
3473
3474         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3475                 p2p_buf_add_service_hash(ies, p2p);
3476
3477         /* TODO: p2p_buf_add_operating_channel() if GO */
3478         p2p_buf_update_ie_hdr(ies, len);
3479 }
3480
3481
3482 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3483 {
3484         size_t len = 100;
3485
3486 #ifdef CONFIG_WIFI_DISPLAY
3487         if (p2p && p2p->wfd_ie_probe_req)
3488                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3489 #endif /* CONFIG_WIFI_DISPLAY */
3490
3491         if (p2p && p2p->vendor_elem &&
3492             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3493                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3494
3495         return len;
3496 }
3497
3498
3499 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3500 {
3501         return p2p_attr_text(p2p_ie, buf, end);
3502 }
3503
3504
3505 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3506 {
3507         struct p2p_device *dev = p2p->go_neg_peer;
3508         int timeout;
3509
3510         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3511
3512         if (dev == NULL) {
3513                 p2p_dbg(p2p, "No pending GO Negotiation");
3514                 return;
3515         }
3516
3517         if (success) {
3518                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3519                         p2p_set_state(p2p, P2P_IDLE);
3520                         return;
3521                 }
3522         } else if (dev->go_neg_req_sent) {
3523                 /* Cancel the increment from p2p_connect_send() on failure */
3524                 dev->go_neg_req_sent--;
3525         }
3526
3527         if (!success &&
3528             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3529             !is_zero_ether_addr(dev->member_in_go_dev)) {
3530                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3531                         MAC2STR(dev->info.p2p_device_addr));
3532                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3533                 p2p_send_dev_disc_req(p2p, dev);
3534                 return;
3535         }
3536
3537         /*
3538          * Use P2P find, if needed, to find the other device from its listen
3539          * channel.
3540          */
3541         p2p_set_state(p2p, P2P_CONNECT);
3542         timeout = success ? 500000 : 100000;
3543         if (!success && p2p->go_neg_peer &&
3544             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3545                 unsigned int r;
3546                 /*
3547                  * Peer is expected to wait our response and we will skip the
3548                  * listen phase. Add some randomness to the wait time here to
3549                  * make it less likely to hit cases where we could end up in
3550                  * sync with peer not listening.
3551                  */
3552                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3553                         r = 0;
3554                 timeout += r % 100000;
3555         }
3556         p2p_set_timeout(p2p, 0, timeout);
3557 }
3558
3559
3560 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3561 {
3562         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3563                 success);
3564         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3565                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3566                 return;
3567         }
3568         p2p_set_state(p2p, P2P_CONNECT);
3569         p2p_set_timeout(p2p, 0, 500000);
3570 }
3571
3572
3573 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3574                                        const u8 *addr)
3575 {
3576         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3577         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3578                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3579                 return;
3580         }
3581
3582         if (success) {
3583                 struct p2p_device *dev;
3584                 dev = p2p_get_device(p2p, addr);
3585                 if (dev &&
3586                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3587                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3588         }
3589
3590         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3591                 p2p_continue_find(p2p);
3592 }
3593
3594
3595 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3596                                enum p2p_send_action_result result)
3597 {
3598         struct p2p_device *dev;
3599
3600         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3601         if (result == P2P_SEND_ACTION_FAILED) {
3602                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3603                 p2p_go_neg_failed(p2p, -1);
3604                 return;
3605         }
3606
3607         dev = p2p->go_neg_peer;
3608
3609         if (result == P2P_SEND_ACTION_NO_ACK) {
3610                 /*
3611                  * Retry GO Negotiation Confirmation
3612                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3613                  * ACK for confirmation.
3614                  */
3615                 if (dev && dev->go_neg_conf &&
3616                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3617                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3618                                 dev->go_neg_conf_sent);
3619                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3620                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3621                                             dev->info.p2p_device_addr,
3622                                             p2p->cfg->dev_addr,
3623                                             dev->info.p2p_device_addr,
3624                                             wpabuf_head(dev->go_neg_conf),
3625                                             wpabuf_len(dev->go_neg_conf), 0) >=
3626                             0) {
3627                                 dev->go_neg_conf_sent++;
3628                                 return;
3629                         }
3630                         p2p_dbg(p2p, "Failed to re-send Action frame");
3631
3632                         /*
3633                          * Continue with the assumption that the first attempt
3634                          * went through and just the ACK frame was lost.
3635                          */
3636                 }
3637
3638                 /*
3639                  * It looks like the TX status for GO Negotiation Confirm is
3640                  * often showing failure even when the peer has actually
3641                  * received the frame. Since the peer may change channels
3642                  * immediately after having received the frame, we may not see
3643                  * an Ack for retries, so just dropping a single frame may
3644                  * trigger this. To allow the group formation to succeed if the
3645                  * peer did indeed receive the frame, continue regardless of
3646                  * the TX status.
3647                  */
3648                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3649         }
3650
3651         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3652
3653         if (dev == NULL)
3654                 return;
3655
3656         p2p_go_complete(p2p, dev);
3657 }
3658
3659
3660 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3661                         const u8 *src, const u8 *bssid,
3662                         enum p2p_send_action_result result)
3663 {
3664         enum p2p_pending_action_state state;
3665         int success;
3666
3667         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3668                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3669                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3670                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3671         success = result == P2P_SEND_ACTION_SUCCESS;
3672         state = p2p->pending_action_state;
3673         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3674         switch (state) {
3675         case P2P_NO_PENDING_ACTION:
3676                 if (p2p->send_action_in_progress) {
3677                         p2p->send_action_in_progress = 0;
3678                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3679                 }
3680                 p2p_check_after_scan_tx_continuation(p2p);
3681                 break;
3682         case P2P_PENDING_GO_NEG_REQUEST:
3683                 p2p_go_neg_req_cb(p2p, success);
3684                 break;
3685         case P2P_PENDING_GO_NEG_RESPONSE:
3686                 p2p_go_neg_resp_cb(p2p, success);
3687                 break;
3688         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3689                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3690                 break;
3691         case P2P_PENDING_GO_NEG_CONFIRM:
3692                 p2p_go_neg_conf_cb(p2p, result);
3693                 break;
3694         case P2P_PENDING_SD:
3695                 p2p_sd_cb(p2p, success);
3696                 break;
3697         case P2P_PENDING_PD:
3698                 p2p_prov_disc_cb(p2p, success);
3699                 break;
3700         case P2P_PENDING_PD_RESPONSE:
3701                 p2p_prov_disc_resp_cb(p2p, success);
3702                 break;
3703         case P2P_PENDING_INVITATION_REQUEST:
3704                 p2p_invitation_req_cb(p2p, success);
3705                 break;
3706         case P2P_PENDING_INVITATION_RESPONSE:
3707                 p2p_invitation_resp_cb(p2p, success);
3708                 break;
3709         case P2P_PENDING_DEV_DISC_REQUEST:
3710                 p2p_dev_disc_req_cb(p2p, success);
3711                 break;
3712         case P2P_PENDING_DEV_DISC_RESPONSE:
3713                 p2p_dev_disc_resp_cb(p2p, success);
3714                 break;
3715         case P2P_PENDING_GO_DISC_REQ:
3716                 p2p_go_disc_req_cb(p2p, success);
3717                 break;
3718         }
3719
3720         p2p->after_scan_tx_in_progress = 0;
3721 }
3722
3723
3724 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3725                    unsigned int duration)
3726 {
3727         if (freq == p2p->pending_client_disc_freq) {
3728                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3729                 p2p->pending_client_disc_freq = 0;
3730                 return;
3731         }
3732
3733         if (freq != p2p->pending_listen_freq) {
3734                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3735                         freq, duration, p2p->pending_listen_freq);
3736                 return;
3737         }
3738
3739         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3740                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3741                 p2p->pending_listen_freq);
3742         p2p->in_listen = 1;
3743         p2p->drv_in_listen = freq;
3744         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3745                 /*
3746                  * Add 20 msec extra wait to avoid race condition with driver
3747                  * remain-on-channel end event, i.e., give driver more time to
3748                  * complete the operation before our timeout expires.
3749                  */
3750                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3751                                 p2p->pending_listen_usec + 20000);
3752         }
3753
3754         p2p->pending_listen_freq = 0;
3755 }
3756
3757
3758 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3759 {
3760         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3761         p2p->drv_in_listen = 0;
3762         if (p2p->in_listen)
3763                 return 0; /* Internal timeout will trigger the next step */
3764
3765         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3766                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3767                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3768                         p2p_go_neg_failed(p2p, -1);
3769                         return 0;
3770                 }
3771
3772                 p2p_set_state(p2p, P2P_CONNECT);
3773                 p2p_connect_send(p2p, p2p->go_neg_peer);
3774                 return 1;
3775         } else if (p2p->state == P2P_SEARCH) {
3776                 if (p2p->p2p_scan_running) {
3777                          /*
3778                           * Search is already in progress. This can happen if
3779                           * an Action frame RX is reported immediately after
3780                           * the end of a remain-on-channel operation and the
3781                           * response frame to that is sent using an offchannel
3782                           * operation while in p2p_find. Avoid an attempt to
3783                           * restart a scan here.
3784                           */
3785                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3786                         return 1;
3787                 }
3788                 if (p2p->pending_listen_freq) {
3789                         /*
3790                          * Better wait a bit if the driver is unable to start
3791                          * offchannel operation for some reason. p2p_search()
3792                          * will be started from internal timeout.
3793                          */
3794                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3795                         p2p_set_timeout(p2p, 0, 100000);
3796                         return 1;
3797                 }
3798                 if (p2p->search_delay) {
3799                         p2p_dbg(p2p, "Delay search operation by %u ms",
3800                                 p2p->search_delay);
3801                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3802                                         (p2p->search_delay % 1000) * 1000);
3803                         return 1;
3804                 }
3805                 p2p_search(p2p);
3806                 return 1;
3807         }
3808
3809         return 0;
3810 }
3811
3812
3813 static void p2p_timeout_connect(struct p2p_data *p2p)
3814 {
3815         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3816         if (p2p->go_neg_peer &&
3817             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3818                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3819                 p2p_go_neg_failed(p2p, -1);
3820                 return;
3821         }
3822         if (p2p->go_neg_peer &&
3823             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3824             p2p->go_neg_peer->connect_reqs < 120) {
3825                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3826                 p2p_connect_send(p2p, p2p->go_neg_peer);
3827                 return;
3828         }
3829         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3830                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3831                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3832                 p2p_set_timeout(p2p, 0, 30000);
3833                 return;
3834         }
3835         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3836         p2p_listen_in_find(p2p, 0);
3837 }
3838
3839
3840 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3841 {
3842         if (p2p->go_neg_peer) {
3843                 if (p2p->drv_in_listen) {
3844                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3845                         return;
3846                 }
3847
3848                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3849                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3850                         p2p_go_neg_failed(p2p, -1);
3851                         return;
3852                 }
3853
3854                 p2p_set_state(p2p, P2P_CONNECT);
3855                 p2p_connect_send(p2p, p2p->go_neg_peer);
3856         } else
3857                 p2p_set_state(p2p, P2P_IDLE);
3858 }
3859
3860
3861 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3862 {
3863         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3864
3865         if (p2p->cfg->is_concurrent_session_active &&
3866             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3867                 p2p_set_timeout(p2p, 0, 500000);
3868         else
3869                 p2p_set_timeout(p2p, 0, 200000);
3870 }
3871
3872
3873 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3874 {
3875         struct p2p_device *dev = p2p->go_neg_peer;
3876
3877         if (dev == NULL) {
3878                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3879                 return;
3880         }
3881
3882         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3883         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3884         p2p_listen_in_find(p2p, 0);
3885 }
3886
3887
3888 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3889 {
3890         p2p_dbg(p2p, "Service Discovery Query timeout");
3891         if (p2p->sd_peer) {
3892                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3893                 p2p->sd_peer = NULL;
3894         }
3895         p2p_continue_find(p2p);
3896 }
3897
3898
3899 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3900 {
3901         p2p_dbg(p2p, "Provision Discovery Request timeout");
3902         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3903         p2p_continue_find(p2p);
3904 }
3905
3906
3907 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3908 {
3909         u32 adv_id = 0;
3910         u8 *adv_mac = NULL;
3911
3912         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3913
3914         /*
3915          * For user initiated PD requests that we have not gotten any responses
3916          * for while in IDLE state, we retry them a couple of times before
3917          * giving up.
3918          */
3919         if (!p2p->user_initiated_pd)
3920                 return;
3921
3922         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3923
3924         if (p2p->pd_retries) {
3925                 p2p->pd_retries--;
3926                 p2p_retry_pd(p2p);
3927         } else {
3928                 struct p2p_device *dev;
3929                 int for_join = 0;
3930
3931                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3932                         if (os_memcmp(p2p->pending_pd_devaddr,
3933                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3934                                 continue;
3935                         if (dev->req_config_methods &&
3936                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3937                                 for_join = 1;
3938                 }
3939
3940                 if (p2p->p2ps_prov) {
3941                         adv_id = p2p->p2ps_prov->adv_id;
3942                         adv_mac = p2p->p2ps_prov->adv_mac;
3943                 }
3944
3945                 if (p2p->cfg->prov_disc_fail)
3946                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3947                                                  p2p->pending_pd_devaddr,
3948                                                  for_join ?
3949                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3950                                                  P2P_PROV_DISC_TIMEOUT,
3951                                                  adv_id, adv_mac, NULL);
3952                 p2p_reset_pending_pd(p2p);
3953         }
3954 }
3955
3956
3957 static void p2p_timeout_invite(struct p2p_data *p2p)
3958 {
3959         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3960         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3961         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3962                 /*
3963                  * Better remain on operating channel instead of listen channel
3964                  * when running a group.
3965                  */
3966                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3967                 p2p_set_timeout(p2p, 0, 100000);
3968                 return;
3969         }
3970         p2p_listen_in_find(p2p, 0);
3971 }
3972
3973
3974 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3975 {
3976         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3977                 p2p_set_state(p2p, P2P_INVITE);
3978                 p2p_invite_send(p2p, p2p->invite_peer,
3979                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3980         } else {
3981                 if (p2p->invite_peer) {
3982                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3983                         if (p2p->cfg->invitation_result)
3984                                 p2p->cfg->invitation_result(
3985                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3986                                         p2p->invite_peer->info.p2p_device_addr,
3987                                         0, 0);
3988                 }
3989                 p2p_set_state(p2p, P2P_IDLE);
3990         }
3991 }
3992
3993
3994 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3995 {
3996         struct p2p_data *p2p = eloop_ctx;
3997
3998         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3999
4000         p2p->in_listen = 0;
4001         if (p2p->drv_in_listen) {
4002                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
4003                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
4004         }
4005
4006         switch (p2p->state) {
4007         case P2P_IDLE:
4008                 /* Check if we timed out waiting for PD req */
4009                 if (p2p->pending_action_state == P2P_PENDING_PD)
4010                         p2p_timeout_prov_disc_req(p2p);
4011                 break;
4012         case P2P_SEARCH:
4013                 /* Check if we timed out waiting for PD req */
4014                 if (p2p->pending_action_state == P2P_PENDING_PD)
4015                         p2p_timeout_prov_disc_req(p2p);
4016                 if (p2p->search_delay && !p2p->in_search_delay) {
4017                         p2p_dbg(p2p, "Delay search operation by %u ms",
4018                                 p2p->search_delay);
4019                         p2p->in_search_delay = 1;
4020                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4021                                         (p2p->search_delay % 1000) * 1000);
4022                         break;
4023                 }
4024                 p2p->in_search_delay = 0;
4025                 p2p_search(p2p);
4026                 break;
4027         case P2P_CONNECT:
4028                 p2p_timeout_connect(p2p);
4029                 break;
4030         case P2P_CONNECT_LISTEN:
4031                 p2p_timeout_connect_listen(p2p);
4032                 break;
4033         case P2P_GO_NEG:
4034                 break;
4035         case P2P_LISTEN_ONLY:
4036                 /* Check if we timed out waiting for PD req */
4037                 if (p2p->pending_action_state == P2P_PENDING_PD)
4038                         p2p_timeout_prov_disc_req(p2p);
4039
4040                 if (p2p->ext_listen_only) {
4041                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4042                         p2p->ext_listen_only = 0;
4043                         p2p_set_state(p2p, P2P_IDLE);
4044                 }
4045                 break;
4046         case P2P_WAIT_PEER_CONNECT:
4047                 p2p_timeout_wait_peer_connect(p2p);
4048                 break;
4049         case P2P_WAIT_PEER_IDLE:
4050                 p2p_timeout_wait_peer_idle(p2p);
4051                 break;
4052         case P2P_SD_DURING_FIND:
4053                 p2p_timeout_sd_during_find(p2p);
4054                 break;
4055         case P2P_PROVISIONING:
4056                 break;
4057         case P2P_PD_DURING_FIND:
4058                 p2p_timeout_prov_disc_during_find(p2p);
4059                 break;
4060         case P2P_INVITE:
4061                 p2p_timeout_invite(p2p);
4062                 break;
4063         case P2P_INVITE_LISTEN:
4064                 p2p_timeout_invite_listen(p2p);
4065                 break;
4066         }
4067 }
4068
4069
4070 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4071 {
4072         struct p2p_device *dev;
4073
4074         dev = p2p_get_device(p2p, peer_addr);
4075         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4076                 MACSTR, MAC2STR(peer_addr));
4077         if (dev == NULL) {
4078                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4079                 return -1;
4080         }
4081         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4082         dev->flags |= P2P_DEV_USER_REJECTED;
4083         return 0;
4084 }
4085
4086
4087 const char * p2p_wps_method_text(enum p2p_wps_method method)
4088 {
4089         switch (method) {
4090         case WPS_NOT_READY:
4091                 return "not-ready";
4092         case WPS_PIN_DISPLAY:
4093                 return "Display";
4094         case WPS_PIN_KEYPAD:
4095                 return "Keypad";
4096         case WPS_PBC:
4097                 return "PBC";
4098         case WPS_NFC:
4099                 return "NFC";
4100         case WPS_P2PS:
4101                 return "P2PS";
4102         }
4103
4104         return "??";
4105 }
4106
4107
4108 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4109 {
4110         switch (go_state) {
4111         case UNKNOWN_GO:
4112                 return "unknown";
4113         case LOCAL_GO:
4114                 return "local";
4115         case  REMOTE_GO:
4116                 return "remote";
4117         }
4118
4119         return "??";
4120 }
4121
4122
4123 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4124                                                const u8 *addr, int next)
4125 {
4126         struct p2p_device *dev;
4127
4128         if (addr)
4129                 dev = p2p_get_device(p2p, addr);
4130         else
4131                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4132
4133         if (dev && next) {
4134                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4135                 if (&dev->list == &p2p->devices)
4136                         dev = NULL;
4137         }
4138
4139         if (dev == NULL)
4140                 return NULL;
4141
4142         return &dev->info;
4143 }
4144
4145
4146 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4147                           char *buf, size_t buflen)
4148 {
4149         struct p2p_device *dev;
4150         int res;
4151         char *pos, *end;
4152         struct os_reltime now;
4153
4154         if (info == NULL)
4155                 return -1;
4156
4157         dev = (struct p2p_device *) (((u8 *) info) -
4158                                      offsetof(struct p2p_device, info));
4159
4160         pos = buf;
4161         end = buf + buflen;
4162
4163         os_get_reltime(&now);
4164         res = os_snprintf(pos, end - pos,
4165                           "age=%d\n"
4166                           "listen_freq=%d\n"
4167                           "wps_method=%s\n"
4168                           "interface_addr=" MACSTR "\n"
4169                           "member_in_go_dev=" MACSTR "\n"
4170                           "member_in_go_iface=" MACSTR "\n"
4171                           "go_neg_req_sent=%d\n"
4172                           "go_state=%s\n"
4173                           "dialog_token=%u\n"
4174                           "intended_addr=" MACSTR "\n"
4175                           "country=%c%c\n"
4176                           "oper_freq=%d\n"
4177                           "req_config_methods=0x%x\n"
4178                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4179                           "status=%d\n"
4180                           "invitation_reqs=%u\n",
4181                           (int) (now.sec - dev->last_seen.sec),
4182                           dev->listen_freq,
4183                           p2p_wps_method_text(dev->wps_method),
4184                           MAC2STR(dev->interface_addr),
4185                           MAC2STR(dev->member_in_go_dev),
4186                           MAC2STR(dev->member_in_go_iface),
4187                           dev->go_neg_req_sent,
4188                           p2p_go_state_text(dev->go_state),
4189                           dev->dialog_token,
4190                           MAC2STR(dev->intended_addr),
4191                           dev->country[0] ? dev->country[0] : '_',
4192                           dev->country[1] ? dev->country[1] : '_',
4193                           dev->oper_freq,
4194                           dev->req_config_methods,
4195                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4196                           "[PROBE_REQ_ONLY]" : "",
4197                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4198                           dev->flags & P2P_DEV_NOT_YET_READY ?
4199                           "[NOT_YET_READY]" : "",
4200                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4201                           "[PD_PEER_DISPLAY]" : "",
4202                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4203                           "[PD_PEER_KEYPAD]" : "",
4204                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4205                           "[PD_PEER_P2PS]" : "",
4206                           dev->flags & P2P_DEV_USER_REJECTED ?
4207                           "[USER_REJECTED]" : "",
4208                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4209                           "[PEER_WAITING_RESPONSE]" : "",
4210                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4211                           "[PREFER_PERSISTENT_GROUP]" : "",
4212                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4213                           "[WAIT_GO_NEG_RESPONSE]" : "",
4214                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4215                           "[WAIT_GO_NEG_CONFIRM]" : "",
4216                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4217                           "[GROUP_CLIENT_ONLY]" : "",
4218                           dev->flags & P2P_DEV_FORCE_FREQ ?
4219                           "[FORCE_FREQ]" : "",
4220                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4221                           "[PD_FOR_JOIN]" : "",
4222                           dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ?
4223                           "[LAST_SEEN_AS_GROUP_CLIENT]" : "",
4224                           dev->status,
4225                           dev->invitation_reqs);
4226         if (os_snprintf_error(end - pos, res))
4227                 return pos - buf;
4228         pos += res;
4229
4230         if (dev->ext_listen_period) {
4231                 res = os_snprintf(pos, end - pos,
4232                                   "ext_listen_period=%u\n"
4233                                   "ext_listen_interval=%u\n",
4234                                   dev->ext_listen_period,
4235                                   dev->ext_listen_interval);
4236                 if (os_snprintf_error(end - pos, res))
4237                         return pos - buf;
4238                 pos += res;
4239         }
4240
4241         if (dev->oper_ssid_len) {
4242                 res = os_snprintf(pos, end - pos,
4243                                   "oper_ssid=%s\n",
4244                                   wpa_ssid_txt(dev->oper_ssid,
4245                                                dev->oper_ssid_len));
4246                 if (os_snprintf_error(end - pos, res))
4247                         return pos - buf;
4248                 pos += res;
4249         }
4250
4251 #ifdef CONFIG_WIFI_DISPLAY
4252         if (dev->info.wfd_subelems) {
4253                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4254                 if (os_snprintf_error(end - pos, res))
4255                         return pos - buf;
4256                 pos += res;
4257
4258                 pos += wpa_snprintf_hex(pos, end - pos,
4259                                         wpabuf_head(dev->info.wfd_subelems),
4260                                         wpabuf_len(dev->info.wfd_subelems));
4261
4262                 res = os_snprintf(pos, end - pos, "\n");
4263                 if (os_snprintf_error(end - pos, res))
4264                         return pos - buf;
4265                 pos += res;
4266         }
4267 #endif /* CONFIG_WIFI_DISPLAY */
4268
4269         return pos - buf;
4270 }
4271
4272
4273 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4274 {
4275         return p2p_get_device(p2p, addr) != NULL;
4276 }
4277
4278
4279 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4280 {
4281         if (enabled) {
4282                 p2p_dbg(p2p, "Client discoverability enabled");
4283                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4284         } else {
4285                 p2p_dbg(p2p, "Client discoverability disabled");
4286                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4287         }
4288 }
4289
4290
4291 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4292                                               u32 duration2, u32 interval2)
4293 {
4294         struct wpabuf *req;
4295         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4296         u8 *len;
4297
4298         req = wpabuf_alloc(100);
4299         if (req == NULL)
4300                 return NULL;
4301
4302         if (duration1 || interval1) {
4303                 os_memset(&desc1, 0, sizeof(desc1));
4304                 desc1.count_type = 1;
4305                 desc1.duration = duration1;
4306                 desc1.interval = interval1;
4307                 ptr1 = &desc1;
4308
4309                 if (duration2 || interval2) {
4310                         os_memset(&desc2, 0, sizeof(desc2));
4311                         desc2.count_type = 2;
4312                         desc2.duration = duration2;
4313                         desc2.interval = interval2;
4314                         ptr2 = &desc2;
4315                 }
4316         }
4317
4318         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4319         len = p2p_buf_add_ie_hdr(req);
4320         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4321         p2p_buf_update_ie_hdr(req, len);
4322
4323         return req;
4324 }
4325
4326
4327 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4328                      const u8 *own_interface_addr, unsigned int freq,
4329                      u32 duration1, u32 interval1, u32 duration2,
4330                      u32 interval2)
4331 {
4332         struct wpabuf *req;
4333
4334         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4335                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4336                 "dur2=%u int2=%u",
4337                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4338                 freq, duration1, interval1, duration2, interval2);
4339
4340         req = p2p_build_presence_req(duration1, interval1, duration2,
4341                                      interval2);
4342         if (req == NULL)
4343                 return -1;
4344
4345         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4346         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4347                             go_interface_addr,
4348                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4349                 p2p_dbg(p2p, "Failed to send Action frame");
4350         }
4351         wpabuf_free(req);
4352
4353         return 0;
4354 }
4355
4356
4357 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4358                                                size_t noa_len, u8 dialog_token)
4359 {
4360         struct wpabuf *resp;
4361         u8 *len;
4362
4363         resp = wpabuf_alloc(100 + noa_len);
4364         if (resp == NULL)
4365                 return NULL;
4366
4367         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4368         len = p2p_buf_add_ie_hdr(resp);
4369         p2p_buf_add_status(resp, status);
4370         if (noa) {
4371                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4372                 wpabuf_put_le16(resp, noa_len);
4373                 wpabuf_put_data(resp, noa, noa_len);
4374         } else
4375                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4376         p2p_buf_update_ie_hdr(resp, len);
4377
4378         return resp;
4379 }
4380
4381
4382 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4383                                      const u8 *sa, const u8 *data, size_t len,
4384                                      int rx_freq)
4385 {
4386         struct p2p_message msg;
4387         u8 status;
4388         struct wpabuf *resp;
4389         size_t g;
4390         struct p2p_group *group = NULL;
4391         int parsed = 0;
4392         u8 noa[50];
4393         int noa_len;
4394
4395         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4396
4397         for (g = 0; g < p2p->num_groups; g++) {
4398                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4399                               ETH_ALEN) == 0) {
4400                         group = p2p->groups[g];
4401                         break;
4402                 }
4403         }
4404         if (group == NULL) {
4405                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4406                         MACSTR, MAC2STR(da));
4407                 return;
4408         }
4409
4410         if (p2p_parse(data, len, &msg) < 0) {
4411                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4412                 status = P2P_SC_FAIL_INVALID_PARAMS;
4413                 goto fail;
4414         }
4415         parsed = 1;
4416
4417         if (msg.noa == NULL) {
4418                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4419                 status = P2P_SC_FAIL_INVALID_PARAMS;
4420                 goto fail;
4421         }
4422
4423         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4424
4425 fail:
4426         if (p2p->cfg->get_noa)
4427                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4428                                             sizeof(noa));
4429         else
4430                 noa_len = -1;
4431         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4432                                        noa_len > 0 ? noa_len : 0,
4433                                        msg.dialog_token);
4434         if (parsed)
4435                 p2p_parse_free(&msg);
4436         if (resp == NULL)
4437                 return;
4438
4439         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4440         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4441                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4442                 p2p_dbg(p2p, "Failed to send Action frame");
4443         }
4444         wpabuf_free(resp);
4445 }
4446
4447
4448 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4449                                       const u8 *sa, const u8 *data, size_t len)
4450 {
4451         struct p2p_message msg;
4452
4453         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4454
4455         if (p2p_parse(data, len, &msg) < 0) {
4456                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4457                 return;
4458         }
4459
4460         if (msg.status == NULL || msg.noa == NULL) {
4461                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4462                 p2p_parse_free(&msg);
4463                 return;
4464         }
4465
4466         if (p2p->cfg->presence_resp) {
4467                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4468                                         msg.noa, msg.noa_len);
4469         }
4470
4471         if (*msg.status) {
4472                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4473                         *msg.status);
4474                 p2p_parse_free(&msg);
4475                 return;
4476         }
4477
4478         p2p_dbg(p2p, "P2P Presence Request was accepted");
4479         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4480                     msg.noa, msg.noa_len);
4481         /* TODO: process NoA */
4482         p2p_parse_free(&msg);
4483 }
4484
4485
4486 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4487 {
4488         struct p2p_data *p2p = eloop_ctx;
4489
4490         if (p2p->ext_listen_interval) {
4491                 /* Schedule next extended listen timeout */
4492                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4493                                        p2p->ext_listen_interval_usec,
4494                                        p2p_ext_listen_timeout, p2p, NULL);
4495         }
4496
4497         if ((p2p->cfg->is_p2p_in_progress &&
4498              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4499             (p2p->pending_action_state == P2P_PENDING_PD &&
4500              p2p->pd_retries > 0)) {
4501                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4502                         p2p_state_txt(p2p->state));
4503                 return;
4504         }
4505
4506         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4507                 /*
4508                  * This should not really happen, but it looks like the Listen
4509                  * command may fail is something else (e.g., a scan) was
4510                  * running at an inconvenient time. As a workaround, allow new
4511                  * Extended Listen operation to be started.
4512                  */
4513                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4514                 p2p->ext_listen_only = 0;
4515                 p2p_set_state(p2p, P2P_IDLE);
4516         }
4517
4518         if (p2p->state != P2P_IDLE) {
4519                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4520                 return;
4521         }
4522
4523         p2p_dbg(p2p, "Extended Listen timeout");
4524         p2p->ext_listen_only = 1;
4525         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4526                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4527                 p2p->ext_listen_only = 0;
4528         }
4529 }
4530
4531
4532 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4533                    unsigned int interval)
4534 {
4535         if (period > 65535 || interval > 65535 || period > interval ||
4536             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4537                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4538                         period, interval);
4539                 return -1;
4540         }
4541
4542         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4543
4544         if (interval == 0) {
4545                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4546                 p2p->ext_listen_period = 0;
4547                 p2p->ext_listen_interval = 0;
4548                 return 0;
4549         }
4550
4551         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4552                 period, interval);
4553         p2p->ext_listen_period = period;
4554         p2p->ext_listen_interval = interval;
4555         p2p->ext_listen_interval_sec = interval / 1000;
4556         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4557
4558         eloop_register_timeout(p2p->ext_listen_interval_sec,
4559                                p2p->ext_listen_interval_usec,
4560                                p2p_ext_listen_timeout, p2p, NULL);
4561
4562         return 0;
4563 }
4564
4565
4566 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4567                       const u8 *ie, size_t ie_len)
4568 {
4569         struct p2p_message msg;
4570
4571         if (bssid == NULL || ie == NULL)
4572                 return;
4573
4574         os_memset(&msg, 0, sizeof(msg));
4575         if (p2p_parse_ies(ie, ie_len, &msg))
4576                 return;
4577         if (msg.minor_reason_code == NULL) {
4578                 p2p_parse_free(&msg);
4579                 return;
4580         }
4581
4582         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4583                 " reason_code=%u minor_reason_code=%u",
4584                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4585
4586         p2p_parse_free(&msg);
4587 }
4588
4589
4590 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4591                         const u8 *ie, size_t ie_len)
4592 {
4593         struct p2p_message msg;
4594
4595         if (bssid == NULL || ie == NULL)
4596                 return;
4597
4598         os_memset(&msg, 0, sizeof(msg));
4599         if (p2p_parse_ies(ie, ie_len, &msg))
4600                 return;
4601         if (msg.minor_reason_code == NULL) {
4602                 p2p_parse_free(&msg);
4603                 return;
4604         }
4605
4606         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4607                 " reason_code=%u minor_reason_code=%u",
4608                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4609
4610         p2p_parse_free(&msg);
4611 }
4612
4613
4614 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4615 {
4616         if (enabled) {
4617                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4618                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4619         } else {
4620                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4621                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4622         }
4623 }
4624
4625
4626 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4627                                  u8 *op_channel)
4628 {
4629         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4630 }
4631
4632
4633 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4634                            u8 forced)
4635 {
4636         if (p2p_channel_to_freq(reg_class, channel) < 0)
4637                 return -1;
4638
4639         /*
4640          * Listen channel was set in configuration or set by control interface;
4641          * cannot override it.
4642          */
4643         if (p2p->cfg->channel_forced && forced == 0) {
4644                 p2p_dbg(p2p,
4645                         "Listen channel was previously configured - do not override based on optimization");
4646                 return -1;
4647         }
4648
4649         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4650                 reg_class, channel);
4651
4652         if (p2p->state == P2P_IDLE) {
4653                 p2p->cfg->reg_class = reg_class;
4654                 p2p->cfg->channel = channel;
4655                 p2p->cfg->channel_forced = forced;
4656         } else {
4657                 p2p_dbg(p2p, "Defer setting listen channel");
4658                 p2p->pending_reg_class = reg_class;
4659                 p2p->pending_channel = channel;
4660                 p2p->pending_channel_forced = forced;
4661         }
4662
4663         return 0;
4664 }
4665
4666
4667 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4668 {
4669         return p2p->cfg->channel;
4670 }
4671
4672
4673 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4674 {
4675         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4676         if (postfix == NULL) {
4677                 p2p->cfg->ssid_postfix_len = 0;
4678                 return 0;
4679         }
4680         if (len > sizeof(p2p->cfg->ssid_postfix))
4681                 return -1;
4682         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4683         p2p->cfg->ssid_postfix_len = len;
4684         return 0;
4685 }
4686
4687
4688 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4689                          int cfg_op_channel)
4690 {
4691         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4692                 return -1;
4693
4694         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4695                 op_reg_class, op_channel);
4696         p2p->cfg->op_reg_class = op_reg_class;
4697         p2p->cfg->op_channel = op_channel;
4698         p2p->cfg->cfg_op_channel = cfg_op_channel;
4699         return 0;
4700 }
4701
4702
4703 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4704                       const struct p2p_channel *pref_chan)
4705 {
4706         struct p2p_channel *n;
4707
4708         if (pref_chan) {
4709                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4710                 if (n == NULL)
4711                         return -1;
4712                 os_memcpy(n, pref_chan,
4713                           num_pref_chan * sizeof(struct p2p_channel));
4714         } else
4715                 n = NULL;
4716
4717         os_free(p2p->cfg->pref_chan);
4718         p2p->cfg->pref_chan = n;
4719         p2p->cfg->num_pref_chan = num_pref_chan;
4720
4721         return 0;
4722 }
4723
4724
4725 int p2p_set_no_go_freq(struct p2p_data *p2p,
4726                        const struct wpa_freq_range_list *list)
4727 {
4728         struct wpa_freq_range *tmp;
4729
4730         if (list == NULL || list->num == 0) {
4731                 os_free(p2p->no_go_freq.range);
4732                 p2p->no_go_freq.range = NULL;
4733                 p2p->no_go_freq.num = 0;
4734                 return 0;
4735         }
4736
4737         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4738         if (tmp == NULL)
4739                 return -1;
4740         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4741         os_free(p2p->no_go_freq.range);
4742         p2p->no_go_freq.range = tmp;
4743         p2p->no_go_freq.num = list->num;
4744         p2p_dbg(p2p, "Updated no GO chan list");
4745
4746         return 0;
4747 }
4748
4749
4750 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4751                            u8 *iface_addr)
4752 {
4753         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4754         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4755                 return -1;
4756         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4757         return 0;
4758 }
4759
4760
4761 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4762                            u8 *dev_addr)
4763 {
4764         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4765         if (dev == NULL)
4766                 return -1;
4767         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4768         return 0;
4769 }
4770
4771
4772 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4773 {
4774         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4775         if (is_zero_ether_addr(p2p->peer_filter))
4776                 p2p_dbg(p2p, "Disable peer filter");
4777         else
4778                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4779                         MAC2STR(p2p->peer_filter));
4780 }
4781
4782
4783 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4784 {
4785         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4786         if (p2p->cross_connect == enabled)
4787                 return;
4788         p2p->cross_connect = enabled;
4789         /* TODO: may need to tear down any action group where we are GO(?) */
4790 }
4791
4792
4793 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4794 {
4795         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4796         if (dev == NULL)
4797                 return -1;
4798         if (dev->oper_freq <= 0)
4799                 return -1;
4800         return dev->oper_freq;
4801 }
4802
4803
4804 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4805 {
4806         p2p_dbg(p2p, "Intra BSS distribution %s",
4807                 enabled ? "enabled" : "disabled");
4808         p2p->cfg->p2p_intra_bss = enabled;
4809 }
4810
4811
4812 void p2p_update_channel_list(struct p2p_data *p2p,
4813                              const struct p2p_channels *chan,
4814                              const struct p2p_channels *cli_chan)
4815 {
4816         p2p_dbg(p2p, "Update channel list");
4817         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4818         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4819         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4820                   sizeof(struct p2p_channels));
4821         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4822 }
4823
4824
4825 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4826                     const u8 *src, const u8 *bssid, const u8 *buf,
4827                     size_t len, unsigned int wait_time)
4828 {
4829         if (p2p->p2p_scan_running) {
4830                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4831                 if (p2p->after_scan_tx) {
4832                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4833                         os_free(p2p->after_scan_tx);
4834                 }
4835                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4836                                                len);
4837                 if (p2p->after_scan_tx == NULL)
4838                         return -1;
4839                 p2p->after_scan_tx->freq = freq;
4840                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4841                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4842                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4843                 p2p->after_scan_tx->len = len;
4844                 p2p->after_scan_tx->wait_time = wait_time;
4845                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4846                 return 0;
4847         }
4848
4849         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4850                                      buf, len, wait_time);
4851 }
4852
4853
4854 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4855                            int freq_overall)
4856 {
4857         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4858                 freq_24, freq_5, freq_overall);
4859         p2p->best_freq_24 = freq_24;
4860         p2p->best_freq_5 = freq_5;
4861         p2p->best_freq_overall = freq_overall;
4862 }
4863
4864
4865 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4866 {
4867         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4868         p2p->own_freq_preference = freq;
4869 }
4870
4871
4872 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4873 {
4874         if (p2p == NULL || p2p->go_neg_peer == NULL)
4875                 return NULL;
4876         return p2p->go_neg_peer->info.p2p_device_addr;
4877 }
4878
4879
4880 const struct p2p_peer_info *
4881 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4882 {
4883         struct p2p_device *dev;
4884
4885         if (addr) {
4886                 dev = p2p_get_device(p2p, addr);
4887                 if (!dev)
4888                         return NULL;
4889
4890                 if (!next) {
4891                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4892                                 return NULL;
4893
4894                         return &dev->info;
4895                 } else {
4896                         do {
4897                                 dev = dl_list_first(&dev->list,
4898                                                     struct p2p_device,
4899                                                     list);
4900                                 if (!dev || &dev->list == &p2p->devices)
4901                                         return NULL;
4902                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4903                 }
4904         } else {
4905                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4906                 if (!dev)
4907                         return NULL;
4908                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4909                         dev = dl_list_first(&dev->list,
4910                                             struct p2p_device,
4911                                             list);
4912                         if (!dev || &dev->list == &p2p->devices)
4913                                 return NULL;
4914                 }
4915         }
4916
4917         return &dev->info;
4918 }
4919
4920
4921 int p2p_in_progress(struct p2p_data *p2p)
4922 {
4923         if (p2p == NULL)
4924                 return 0;
4925         if (p2p->state == P2P_SEARCH)
4926                 return 2;
4927         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4928 }
4929
4930
4931 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4932                             u8 client_timeout)
4933 {
4934         if (p2p) {
4935                 p2p->go_timeout = go_timeout;
4936                 p2p->client_timeout = client_timeout;
4937         }
4938 }
4939
4940
4941 #ifdef CONFIG_WIFI_DISPLAY
4942
4943 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4944 {
4945         size_t g;
4946         struct p2p_group *group;
4947
4948         for (g = 0; g < p2p->num_groups; g++) {
4949                 group = p2p->groups[g];
4950                 p2p_group_force_beacon_update_ies(group);
4951         }
4952 }
4953
4954
4955 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4956 {
4957         wpabuf_free(p2p->wfd_ie_beacon);
4958         p2p->wfd_ie_beacon = ie;
4959         p2p_update_wfd_ie_groups(p2p);
4960         return 0;
4961 }
4962
4963
4964 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4965 {
4966         wpabuf_free(p2p->wfd_ie_probe_req);
4967         p2p->wfd_ie_probe_req = ie;
4968         return 0;
4969 }
4970
4971
4972 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4973 {
4974         wpabuf_free(p2p->wfd_ie_probe_resp);
4975         p2p->wfd_ie_probe_resp = ie;
4976         p2p_update_wfd_ie_groups(p2p);
4977         return 0;
4978 }
4979
4980
4981 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4982 {
4983         wpabuf_free(p2p->wfd_ie_assoc_req);
4984         p2p->wfd_ie_assoc_req = ie;
4985         return 0;
4986 }
4987
4988
4989 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4990 {
4991         wpabuf_free(p2p->wfd_ie_invitation);
4992         p2p->wfd_ie_invitation = ie;
4993         return 0;
4994 }
4995
4996
4997 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4998 {
4999         wpabuf_free(p2p->wfd_ie_prov_disc_req);
5000         p2p->wfd_ie_prov_disc_req = ie;
5001         return 0;
5002 }
5003
5004
5005 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
5006 {
5007         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
5008         p2p->wfd_ie_prov_disc_resp = ie;
5009         return 0;
5010 }
5011
5012
5013 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5014 {
5015         wpabuf_free(p2p->wfd_ie_go_neg);
5016         p2p->wfd_ie_go_neg = ie;
5017         return 0;
5018 }
5019
5020
5021 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5022 {
5023         wpabuf_free(p2p->wfd_dev_info);
5024         if (elem) {
5025                 p2p->wfd_dev_info = wpabuf_dup(elem);
5026                 if (p2p->wfd_dev_info == NULL)
5027                         return -1;
5028         } else
5029                 p2p->wfd_dev_info = NULL;
5030
5031         return 0;
5032 }
5033
5034
5035 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5036 {
5037         wpabuf_free(p2p->wfd_assoc_bssid);
5038         if (elem) {
5039                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5040                 if (p2p->wfd_assoc_bssid == NULL)
5041                         return -1;
5042         } else
5043                 p2p->wfd_assoc_bssid = NULL;
5044
5045         return 0;
5046 }
5047
5048
5049 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5050                                   const struct wpabuf *elem)
5051 {
5052         wpabuf_free(p2p->wfd_coupled_sink_info);
5053         if (elem) {
5054                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5055                 if (p2p->wfd_coupled_sink_info == NULL)
5056                         return -1;
5057         } else
5058                 p2p->wfd_coupled_sink_info = NULL;
5059
5060         return 0;
5061 }
5062
5063 #endif /* CONFIG_WIFI_DISPLAY */
5064
5065
5066 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5067                      int max_disc_tu)
5068 {
5069         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5070                 return -1;
5071
5072         p2p->min_disc_int = min_disc_int;
5073         p2p->max_disc_int = max_disc_int;
5074         p2p->max_disc_tu = max_disc_tu;
5075         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5076                 min_disc_int, max_disc_int, max_disc_tu);
5077
5078         return 0;
5079 }
5080
5081
5082 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5083 {
5084         va_list ap;
5085         char buf[500];
5086
5087         if (!p2p->cfg->debug_print)
5088                 return;
5089
5090         va_start(ap, fmt);
5091         vsnprintf(buf, sizeof(buf), fmt, ap);
5092         buf[sizeof(buf) - 1] = '\0';
5093         va_end(ap);
5094         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5095 }
5096
5097
5098 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5099 {
5100         va_list ap;
5101         char buf[500];
5102
5103         if (!p2p->cfg->debug_print)
5104                 return;
5105
5106         va_start(ap, fmt);
5107         vsnprintf(buf, sizeof(buf), fmt, ap);
5108         buf[sizeof(buf) - 1] = '\0';
5109         va_end(ap);
5110         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5111 }
5112
5113
5114 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5115 {
5116         va_list ap;
5117         char buf[500];
5118
5119         if (!p2p->cfg->debug_print)
5120                 return;
5121
5122         va_start(ap, fmt);
5123         vsnprintf(buf, sizeof(buf), fmt, ap);
5124         buf[sizeof(buf) - 1] = '\0';
5125         va_end(ap);
5126         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5127 }
5128
5129
5130 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5131                              void (*peer_callback)(struct p2p_peer_info *peer,
5132                                                    void *user_data),
5133                              void *user_data)
5134 {
5135         struct p2p_device *dev, *n;
5136
5137         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5138                 peer_callback(&dev->info, user_data);
5139         }
5140 }
5141
5142
5143 #ifdef CONFIG_WPS_NFC
5144
5145 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5146                                               int client_freq,
5147                                               const u8 *go_dev_addr,
5148                                               const u8 *ssid, size_t ssid_len)
5149 {
5150         struct wpabuf *buf;
5151         u8 op_class, channel;
5152         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5153
5154         buf = wpabuf_alloc(1000);
5155         if (buf == NULL)
5156                 return NULL;
5157
5158         op_class = p2p->cfg->reg_class;
5159         channel = p2p->cfg->channel;
5160
5161         p2p_buf_add_capability(buf, p2p->dev_capab &
5162                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5163         p2p_buf_add_device_info(buf, p2p, NULL);
5164
5165         if (p2p->num_groups > 0) {
5166                 int freq = p2p_group_get_freq(p2p->groups[0]);
5167                 role = P2P_GO_IN_A_GROUP;
5168                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5169                         p2p_dbg(p2p,
5170                                 "Unknown GO operating frequency %d MHz for NFC handover",
5171                                 freq);
5172                         wpabuf_free(buf);
5173                         return NULL;
5174                 }
5175         } else if (client_freq > 0) {
5176                 role = P2P_CLIENT_IN_A_GROUP;
5177                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5178                         p2p_dbg(p2p,
5179                                 "Unknown client operating frequency %d MHz for NFC handover",
5180                                 client_freq);
5181                         wpabuf_free(buf);
5182                         return NULL;
5183                 }
5184         }
5185
5186         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5187                                        channel, role);
5188
5189         if (p2p->num_groups > 0) {
5190                 /* Limit number of clients to avoid very long message */
5191                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5192                 p2p_group_buf_add_id(p2p->groups[0], buf);
5193         } else if (client_freq > 0 &&
5194                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5195                    ssid && ssid_len > 0) {
5196                 /*
5197                  * Add the optional P2P Group ID to indicate in which group this
5198                  * device is a P2P Client.
5199                  */
5200                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5201         }
5202
5203         return buf;
5204 }
5205
5206
5207 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5208                                            int client_freq,
5209                                            const u8 *go_dev_addr,
5210                                            const u8 *ssid, size_t ssid_len)
5211 {
5212         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5213                                       ssid_len);
5214 }
5215
5216
5217 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5218                                            int client_freq,
5219                                            const u8 *go_dev_addr,
5220                                            const u8 *ssid, size_t ssid_len)
5221 {
5222         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5223                                       ssid_len);
5224 }
5225
5226
5227 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5228                                         struct p2p_nfc_params *params)
5229 {
5230         struct p2p_message msg;
5231         struct p2p_device *dev;
5232         const u8 *p2p_dev_addr;
5233         int freq;
5234         enum p2p_role_indication role;
5235
5236         params->next_step = NO_ACTION;
5237
5238         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5239                                    params->p2p_attr, params->p2p_len, &msg)) {
5240                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5241                 p2p_parse_free(&msg);
5242                 return -1;
5243         }
5244
5245         if (msg.p2p_device_addr)
5246                 p2p_dev_addr = msg.p2p_device_addr;
5247         else if (msg.device_id)
5248                 p2p_dev_addr = msg.device_id;
5249         else {
5250                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5251                 p2p_parse_free(&msg);
5252                 return -1;
5253         }
5254
5255         if (msg.oob_dev_password) {
5256                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5257                           msg.oob_dev_password_len);
5258                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5259         }
5260
5261         dev = p2p_create_device(p2p, p2p_dev_addr);
5262         if (dev == NULL) {
5263                 p2p_parse_free(&msg);
5264                 return -1;
5265         }
5266
5267         params->peer = &dev->info;
5268
5269         os_get_reltime(&dev->last_seen);
5270         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5271         p2p_copy_wps_info(p2p, dev, 0, &msg);
5272
5273         if (!msg.oob_go_neg_channel) {
5274                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5275                 return -1;
5276         }
5277
5278         if (msg.oob_go_neg_channel[3] == 0 &&
5279             msg.oob_go_neg_channel[4] == 0)
5280                 freq = 0;
5281         else
5282                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5283                                            msg.oob_go_neg_channel[4]);
5284         if (freq < 0) {
5285                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5286                 return -1;
5287         }
5288         role = msg.oob_go_neg_channel[5];
5289
5290         if (role == P2P_GO_IN_A_GROUP) {
5291                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5292                 params->go_freq = freq;
5293         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5294                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5295                         freq);
5296                 params->go_freq = freq;
5297         } else
5298                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5299         dev->oob_go_neg_freq = freq;
5300
5301         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5302                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5303                                            p2p->cfg->channel);
5304                 if (freq < 0) {
5305                         p2p_dbg(p2p, "Own listen channel not known");
5306                         return -1;
5307                 }
5308                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5309                 dev->oob_go_neg_freq = freq;
5310         }
5311
5312         if (msg.group_id) {
5313                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5314                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5315                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5316                           params->go_ssid_len);
5317         }
5318
5319         if (dev->flags & P2P_DEV_USER_REJECTED) {
5320                 p2p_dbg(p2p, "Do not report rejected device");
5321                 p2p_parse_free(&msg);
5322                 return 0;
5323         }
5324
5325         if (!(dev->flags & P2P_DEV_REPORTED)) {
5326                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5327                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5328                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5329         }
5330         p2p_parse_free(&msg);
5331
5332         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5333                 params->next_step = BOTH_GO;
5334         else if (role == P2P_GO_IN_A_GROUP)
5335                 params->next_step = JOIN_GROUP;
5336         else if (role == P2P_CLIENT_IN_A_GROUP) {
5337                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5338                 params->next_step = PEER_CLIENT;
5339         } else if (p2p->num_groups > 0)
5340                 params->next_step = AUTH_JOIN;
5341         else if (params->sel)
5342                 params->next_step = INIT_GO_NEG;
5343         else
5344                 params->next_step = RESP_GO_NEG;
5345
5346         return 0;
5347 }
5348
5349
5350 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5351                                       int go_intent,
5352                                       const u8 *own_interface_addr)
5353 {
5354
5355         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5356         if (dev_pw_id == 0) {
5357                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5358                 return;
5359         }
5360
5361         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5362                 dev_pw_id);
5363
5364         p2p->go_intent = go_intent;
5365         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5366 }
5367
5368 #endif /* CONFIG_WPS_NFC */
5369
5370
5371 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5372 {
5373         if (len < 8 || len > 63)
5374                 return -1;
5375         p2p->cfg->passphrase_len = len;
5376         return 0;
5377 }
5378
5379
5380 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5381 {
5382         p2p->vendor_elem = vendor_elem;
5383 }
5384
5385
5386 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5387 {
5388         struct p2p_data *p2p = eloop_ctx;
5389
5390         p2p_dbg(p2p,
5391                 "Timeout on waiting peer to become ready for GO Negotiation");
5392         p2p_go_neg_failed(p2p, -1);
5393 }