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 {
 473         struct p2p_group_info info;
 474         size_t c;
 475         struct p2p_device *dev;
 476
 477         if (gi == NULL)
 478                 return 0;
 479
 480         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 481                 return -1;
 482
 483         /*
 484          * Clear old data for this group; if the devices are still in the
 485          * group, the information will be restored in the loop following this.
 486          */
 487         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 488                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 489                               ETH_ALEN) == 0) {
 490                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 491                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 492                 }
 493         }
 494
 495         for (c = 0; c < info.num_clients; c++) {
 496                 struct p2p_client_info *cli = &info.client[c];
 497                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 498                               ETH_ALEN) == 0)
 499                         continue; /* ignore our own entry */
 500                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 501                 if (dev) {
 502                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 503                                           P2P_DEV_PROBE_REQ_ONLY)) {
 504                                 /*
 505                                  * Update information since we have not
 506                                  * received this directly from the client.
 507                                  */
 508                                 p2p_copy_client_info(dev, cli);
 509                         } else {
 510                                 /*
 511                                  * Need to update P2P Client Discoverability
 512                                  * flag since it is valid only in P2P Group
 513                                  * Info attribute.
 514                                  */
 515                                 dev->info.dev_capab &=
 516                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 517                                 dev->info.dev_capab |=
 518                                         cli->dev_capab &
 519                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 520                         }
 521                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 522                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 523                         }
 524                 } else {
 525                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 526                         if (dev == NULL)
 527                                 continue;
 528                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 529                         p2p_copy_client_info(dev, cli);
 530                         dev->oper_freq = freq;
 531                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 532                                             dev->info.p2p_device_addr,
 533                                             &dev->info, 1);
 534                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 535                 }
 536
 537                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 538                           ETH_ALEN);
 539                 os_get_reltime(&dev->last_seen);
 540                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 541                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 542                           ETH_ALEN);
 543         }
 544
 545         return 0;
 546 }
 547
 548
 549 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 550                               int probe_req, const struct p2p_message *msg)
 551 {
 552         os_memcpy(dev->info.device_name, msg->device_name,
 553                   sizeof(dev->info.device_name));
 554
 555         if (msg->manufacturer &&
 556             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 557                 os_memset(dev->info.manufacturer, 0,
 558                           sizeof(dev->info.manufacturer));
 559                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 560                           msg->manufacturer_len);
 561         }
 562
 563         if (msg->model_name &&
 564             msg->model_name_len < sizeof(dev->info.model_name)) {
 565                 os_memset(dev->info.model_name, 0,
 566                           sizeof(dev->info.model_name));
 567                 os_memcpy(dev->info.model_name, msg->model_name,
 568                           msg->model_name_len);
 569         }
 570
 571         if (msg->model_number &&
 572             msg->model_number_len < sizeof(dev->info.model_number)) {
 573                 os_memset(dev->info.model_number, 0,
 574                           sizeof(dev->info.model_number));
 575                 os_memcpy(dev->info.model_number, msg->model_number,
 576                           msg->model_number_len);
 577         }
 578
 579         if (msg->serial_number &&
 580             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 581                 os_memset(dev->info.serial_number, 0,
 582                           sizeof(dev->info.serial_number));
 583                 os_memcpy(dev->info.serial_number, msg->serial_number,
 584                           msg->serial_number_len);
 585         }
 586
 587         if (msg->pri_dev_type)
 588                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 589                           sizeof(dev->info.pri_dev_type));
 590         else if (msg->wps_pri_dev_type)
 591                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 592                           sizeof(dev->info.pri_dev_type));
 593
 594         if (msg->wps_sec_dev_type_list) {
 595                 os_memcpy(dev->info.wps_sec_dev_type_list,
 596                           msg->wps_sec_dev_type_list,
 597                           msg->wps_sec_dev_type_list_len);
 598                 dev->info.wps_sec_dev_type_list_len =
 599                         msg->wps_sec_dev_type_list_len;
 600         }
 601
 602         if (msg->capability) {
 603                 /*
 604                  * P2P Client Discoverability bit is reserved in all frames
 605                  * that use this function, so do not change its value here.
 606                  */
 607                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 608                 dev->info.dev_capab |= msg->capability[0] &
 609                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 610                 dev->info.group_capab = msg->capability[1];
 611         }
 612
 613         if (msg->ext_listen_timing) {
 614                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 615                 dev->ext_listen_interval =
 616                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 617         }
 618
 619         if (!probe_req) {
 620                 u16 new_config_methods;
 621                 new_config_methods = msg->config_methods ?
 622                         msg->config_methods : msg->wps_config_methods;
 623                 if (new_config_methods &&
 624                     dev->info.config_methods != new_config_methods) {
 625                         p2p_dbg(p2p, "Update peer " MACSTR
 626                                 " config_methods 0x%x -> 0x%x",
 627                                 MAC2STR(dev->info.p2p_device_addr),
 628                                 dev->info.config_methods,
 629                                 new_config_methods);
 630                         dev->info.config_methods = new_config_methods;
 631                 }
 632         }
 633 }
 634
 635
 636 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 637                                          size_t ies_len)
 638 {
 639         const u8 *pos, *end;
 640         u8 id, len;
 641
 642         wpabuf_free(dev->info.vendor_elems);
 643         dev->info.vendor_elems = NULL;
 644
 645         end = ies + ies_len;
 646
 647         for (pos = ies; pos + 1 < end; pos += len) {
 648                 id = *pos++;
 649                 len = *pos++;
 650
 651                 if (pos + len > end)
 652                         break;
 653
 654                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 655                         continue;
 656
 657                 if (len >= 4) {
 658                         u32 type = WPA_GET_BE32(pos);
 659
 660                         if (type == WPA_IE_VENDOR_TYPE ||
 661                             type == WMM_IE_VENDOR_TYPE ||
 662                             type == WPS_IE_VENDOR_TYPE ||
 663                             type == P2P_IE_VENDOR_TYPE ||
 664                             type == WFD_IE_VENDOR_TYPE)
 665                                 continue;
 666                 }
 667
 668                 /* Unknown vendor element - make raw IE data available */
 669                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 670                         break;
 671                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 672         }
 673 }
 674
 675
 676 static int p2p_compare_wfd_info(struct p2p_device *dev,
 677                               const struct p2p_message *msg)
 678 {
 679         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 680                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 681                         return 1;
 682
 683                 return os_memcmp(dev->info.wfd_subelems->buf,
 684                                  msg->wfd_subelems->buf,
 685                                  dev->info.wfd_subelems->used);
 686         }
 687         if (dev->info.wfd_subelems || msg->wfd_subelems)
 688                 return 1;
 689
 690         return 0;
 691 }
 692
 693
 694 /**
 695  * p2p_add_device - Add peer entries based on scan results or P2P frames
 696  * @p2p: P2P module context from p2p_init()
 697  * @addr: Source address of Beacon or Probe Response frame (may be either
 698  *      P2P Device Address or P2P Interface Address)
 699  * @level: Signal level (signal strength of the received frame from the peer)
 700  * @freq: Frequency on which the Beacon or Probe Response frame was received
 701  * @rx_time: Time when the result was received
 702  * @ies: IEs from the Beacon or Probe Response frame
 703  * @ies_len: Length of ies buffer in octets
 704  * @scan_res: Whether this was based on scan results
 705  * Returns: 0 on success, -1 on failure
 706  *
 707  * If the scan result is for a GO, the clients in the group will also be added
 708  * to the peer table. This function can also be used with some other frames
 709  * like Provision Discovery Request that contains P2P Capability and P2P Device
 710  * Info attributes.
 711  */
 712 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 713                    struct os_reltime *rx_time, int level, const u8 *ies,
 714                    size_t ies_len, int scan_res)
 715 {
 716         struct p2p_device *dev;
 717         struct p2p_message msg;
 718         const u8 *p2p_dev_addr;
 719         int wfd_changed;
 720         int i;
 721         struct os_reltime time_now;
 722
 723         os_memset(&msg, 0, sizeof(msg));
 724         if (p2p_parse_ies(ies, ies_len, &msg)) {
 725                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 726                 p2p_parse_free(&msg);
 727                 return -1;
 728         }
 729
 730         if (msg.p2p_device_addr)
 731                 p2p_dev_addr = msg.p2p_device_addr;
 732         else if (msg.device_id)
 733                 p2p_dev_addr = msg.device_id;
 734         else {
 735                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 736                 p2p_parse_free(&msg);
 737                 return -1;
 738         }
 739
 740         if (!is_zero_ether_addr(p2p->peer_filter) &&
 741             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 742                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 743                         " due to peer filter", MAC2STR(p2p_dev_addr));
 744                 p2p_parse_free(&msg);
 745                 return 0;
 746         }
 747
 748         dev = p2p_create_device(p2p, p2p_dev_addr);
 749         if (dev == NULL) {
 750                 p2p_parse_free(&msg);
 751                 return -1;
 752         }
 753
 754         if (rx_time == NULL) {
 755                 os_get_reltime(&time_now);
 756                 rx_time = &time_now;
 757         }
 758
 759         /*
 760          * Update the device entry only if the new peer
 761          * entry is newer than the one previously stored.
 762          */
 763         if (dev->last_seen.sec > 0 &&
 764             os_reltime_before(rx_time, &dev->last_seen)) {
 765                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 766                         (unsigned int) rx_time->sec,
 767                         (unsigned int) rx_time->usec,
 768                         (unsigned int) dev->last_seen.sec,
 769                         (unsigned int) dev->last_seen.usec);
 770                 p2p_parse_free(&msg);
 771                 return -1;
 772         }
 773
 774         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 775
 776         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 777
 778         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 779                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 780         if (msg.ssid &&
 781             msg.ssid[1] <= sizeof(dev->oper_ssid) &&
 782             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 783              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 784              != 0)) {
 785                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 786                 dev->oper_ssid_len = msg.ssid[1];
 787         }
 788
 789         if (msg.adv_service_instance && msg.adv_service_instance_len) {
 790                 wpabuf_free(dev->info.p2ps_instance);
 791                 dev->info.p2ps_instance = wpabuf_alloc_copy(
 792                         msg.adv_service_instance, msg.adv_service_instance_len);
 793         }
 794
 795         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 796             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 797                 int ds_freq;
 798                 if (*msg.ds_params == 14)
 799                         ds_freq = 2484;
 800                 else
 801                         ds_freq = 2407 + *msg.ds_params * 5;
 802                 if (freq != ds_freq) {
 803                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 804                                 freq, ds_freq);
 805                         freq = ds_freq;
 806                 }
 807         }
 808
 809         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 810                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 811                         MACSTR " %d -> %d MHz (DS param %d)",
 812                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 813                         freq, msg.ds_params ? *msg.ds_params : -1);
 814         }
 815         if (scan_res) {
 816                 dev->listen_freq = freq;
 817                 if (msg.group_info)
 818                         dev->oper_freq = freq;
 819         }
 820         dev->info.level = level;
 821
 822         p2p_copy_wps_info(p2p, dev, 0, &msg);
 823
 824         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 825                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 826                 dev->info.wps_vendor_ext[i] = NULL;
 827         }
 828
 829         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 830                 if (msg.wps_vendor_ext[i] == NULL)
 831                         break;
 832                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 833                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 834                 if (dev->info.wps_vendor_ext[i] == NULL)
 835                         break;
 836         }
 837
 838         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 839
 840         if (msg.wfd_subelems) {
 841                 wpabuf_free(dev->info.wfd_subelems);
 842                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 843         }
 844
 845         if (scan_res) {
 846                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 847                                       msg.group_info, msg.group_info_len);
 848         }
 849
 850         p2p_parse_free(&msg);
 851
 852         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 853
 854         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed &&
 855             (!msg.adv_service_instance ||
 856              (dev->flags & P2P_DEV_P2PS_REPORTED)))
 857                 return 0;
 858
 859         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 860                 freq, (unsigned int) rx_time->sec,
 861                 (unsigned int) rx_time->usec);
 862         if (dev->flags & P2P_DEV_USER_REJECTED) {
 863                 p2p_dbg(p2p, "Do not report rejected device");
 864                 return 0;
 865         }
 866
 867         if (dev->info.config_methods == 0 &&
 868             (freq == 2412 || freq == 2437 || freq == 2462)) {
 869                 /*
 870                  * If we have only seen a Beacon frame from a GO, we do not yet
 871                  * know what WPS config methods it supports. Since some
 872                  * applications use config_methods value from P2P-DEVICE-FOUND
 873                  * events, postpone reporting this peer until we've fully
 874                  * discovered its capabilities.
 875                  *
 876                  * At least for now, do this only if the peer was detected on
 877                  * one of the social channels since that peer can be easily be
 878                  * found again and there are no limitations of having to use
 879                  * passive scan on this channels, so this can be done through
 880                  * Probe Response frame that includes the config_methods
 881                  * information.
 882                  */
 883                 p2p_dbg(p2p, "Do not report peer " MACSTR
 884                         " with unknown config methods", MAC2STR(addr));
 885                 return 0;
 886         }
 887
 888         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 889                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 890         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 891
 892         if (msg.adv_service_instance)
 893                 dev->flags |= P2P_DEV_P2PS_REPORTED;
 894
 895         return 0;
 896 }
 897
 898
 899 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 900 {
 901         int i;
 902
 903         if (p2p->go_neg_peer == dev) {
 904                 /*
 905                  * If GO Negotiation is in progress, report that it has failed.
 906                  */
 907                 p2p_go_neg_failed(p2p, -1);
 908         }
 909         if (p2p->invite_peer == dev)
 910                 p2p->invite_peer = NULL;
 911         if (p2p->sd_peer == dev)
 912                 p2p->sd_peer = NULL;
 913         if (p2p->pending_client_disc_go == dev)
 914                 p2p->pending_client_disc_go = NULL;
 915
 916         /* dev_lost() device, but only if it was previously dev_found() */
 917         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 918                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 919                                    dev->info.p2p_device_addr);
 920
 921         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 922                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 923                 dev->info.wps_vendor_ext[i] = NULL;
 924         }
 925
 926         wpabuf_free(dev->info.wfd_subelems);
 927         wpabuf_free(dev->info.vendor_elems);
 928         wpabuf_free(dev->go_neg_conf);
 929         wpabuf_free(dev->info.p2ps_instance);
 930
 931         os_free(dev);
 932 }
 933
 934
 935 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 936 {
 937         struct p2p_channels *c;
 938         struct p2p_reg_class *cla;
 939         size_t cl, ch;
 940         int found = 0;
 941         u8 reg_class;
 942         u8 channel;
 943         int freq;
 944
 945         c = &p2p->cfg->channels;
 946         for (cl = 0; cl < c->reg_classes; cl++) {
 947                 cla = &c->reg_class[cl];
 948                 if (cla->reg_class != p2p->last_prog_scan_class)
 949                         continue;
 950                 for (ch = 0; ch < cla->channels; ch++) {
 951                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 952                                 found = 1;
 953                                 break;
 954                         }
 955                 }
 956                 if (found)
 957                         break;
 958         }
 959
 960         if (!found) {
 961                 /* Start from beginning */
 962                 reg_class = c->reg_class[0].reg_class;
 963                 channel = c->reg_class[0].channel[0];
 964         } else {
 965                 /* Pick the next channel */
 966                 ch++;
 967                 if (ch == cla->channels) {
 968                         cl++;
 969                         if (cl == c->reg_classes)
 970                                 cl = 0;
 971                         ch = 0;
 972                 }
 973                 reg_class = c->reg_class[cl].reg_class;
 974                 channel = c->reg_class[cl].channel[ch];
 975         }
 976
 977         freq = p2p_channel_to_freq(reg_class, channel);
 978         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 979                 reg_class, channel, freq);
 980         p2p->last_prog_scan_class = reg_class;
 981         p2p->last_prog_scan_chan = channel;
 982
 983         if (freq == 2412 || freq == 2437 || freq == 2462)
 984                 return 0; /* No need to add social channels */
 985         return freq;
 986 }
 987
 988
 989 static void p2p_search(struct p2p_data *p2p)
 990 {
 991         int freq = 0;
 992         enum p2p_scan_type type;
 993         u16 pw_id = DEV_PW_DEFAULT;
 994         int res;
 995
 996         if (p2p->drv_in_listen) {
 997                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 998                 return;
 999         }
1000         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1001
1002         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
1003             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
1004                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
1005                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
1006         } else {
1007                 type = P2P_SCAN_SOCIAL;
1008                 p2p_dbg(p2p, "Starting search");
1009         }
1010
1011         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
1012                                  p2p->num_req_dev_types, p2p->req_dev_types,
1013                                  p2p->find_dev_id, pw_id);
1014         if (res < 0) {
1015                 p2p_dbg(p2p, "Scan request schedule failed");
1016                 p2p_continue_find(p2p);
1017         }
1018 }
1019
1020
1021 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
1022 {
1023         struct p2p_data *p2p = eloop_ctx;
1024         p2p_dbg(p2p, "Find timeout -> stop");
1025         p2p_stop_find(p2p);
1026 }
1027
1028
1029 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1030 {
1031         if (status != 0) {
1032                 p2p_dbg(p2p, "Scan request failed");
1033                 /* Do continue find even for the first p2p_find_scan */
1034                 p2p_continue_find(p2p);
1035         } else {
1036                 p2p_dbg(p2p, "Running p2p_scan");
1037                 p2p->p2p_scan_running = 1;
1038                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1039                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1040                                        p2p, NULL);
1041         }
1042 }
1043
1044
1045 static int p2p_run_after_scan(struct p2p_data *p2p)
1046 {
1047         struct p2p_device *dev;
1048         enum p2p_after_scan op;
1049
1050         if (p2p->after_scan_tx) {
1051                 p2p->after_scan_tx_in_progress = 1;
1052                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1053                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1054                                       p2p->after_scan_tx->freq,
1055                                       p2p->after_scan_tx->dst,
1056                                       p2p->after_scan_tx->src,
1057                                       p2p->after_scan_tx->bssid,
1058                                       (u8 *) (p2p->after_scan_tx + 1),
1059                                       p2p->after_scan_tx->len,
1060                                       p2p->after_scan_tx->wait_time);
1061                 os_free(p2p->after_scan_tx);
1062                 p2p->after_scan_tx = NULL;
1063                 return 1;
1064         }
1065
1066         op = p2p->start_after_scan;
1067         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1068         switch (op) {
1069         case P2P_AFTER_SCAN_NOTHING:
1070                 break;
1071         case P2P_AFTER_SCAN_LISTEN:
1072                 p2p_dbg(p2p, "Start previously requested Listen state");
1073                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1074                            p2p->pending_listen_usec / 1000);
1075                 return 1;
1076         case P2P_AFTER_SCAN_CONNECT:
1077                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1078                         MAC2STR(p2p->after_scan_peer));
1079                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1080                 if (dev == NULL) {
1081                         p2p_dbg(p2p, "Peer not known anymore");
1082                         break;
1083                 }
1084                 p2p_connect_send(p2p, dev);
1085                 return 1;
1086         }
1087
1088         return 0;
1089 }
1090
1091
1092 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1093 {
1094         struct p2p_data *p2p = eloop_ctx;
1095         int running;
1096         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1097         running = p2p->p2p_scan_running;
1098         /* Make sure we recover from missed scan results callback */
1099         p2p->p2p_scan_running = 0;
1100
1101         if (running)
1102                 p2p_run_after_scan(p2p);
1103 }
1104
1105
1106 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1107 {
1108         p2p->num_req_dev_types = 0;
1109         os_free(p2p->req_dev_types);
1110         p2p->req_dev_types = NULL;
1111 }
1112
1113
1114 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1115 {
1116         u8 buf[SHA256_MAC_LEN];
1117         char str_buf[256];
1118         const u8 *adv_array;
1119         size_t i, adv_len;
1120
1121         if (!str || !hash)
1122                 return 0;
1123
1124         if (!str[0]) {
1125                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1126                 return 1;
1127         }
1128
1129         adv_array = (u8 *) str_buf;
1130         adv_len = os_strlen(str);
1131
1132         for (i = 0; str[i] && i < adv_len; i++) {
1133                 if (str[i] >= 'A' && str[i] <= 'Z')
1134                         str_buf[i] = str[i] - 'A' + 'a';
1135                 else
1136                         str_buf[i] = str[i];
1137         }
1138
1139         if (sha256_vector(1, &adv_array, &adv_len, buf))
1140                 return 0;
1141
1142         os_memcpy(hash, buf, P2PS_HASH_LEN);
1143         return 1;
1144 }
1145
1146
1147 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1148              enum p2p_discovery_type type,
1149              unsigned int num_req_dev_types, const u8 *req_dev_types,
1150              const u8 *dev_id, unsigned int search_delay,
1151              u8 seek_count, const char **seek, int freq)
1152 {
1153         int res;
1154
1155         p2p_dbg(p2p, "Starting find (type=%d)", type);
1156         os_get_reltime(&p2p->find_start);
1157         if (p2p->p2p_scan_running) {
1158                 p2p_dbg(p2p, "p2p_scan is already running");
1159         }
1160
1161         p2p_free_req_dev_types(p2p);
1162         if (req_dev_types && num_req_dev_types) {
1163                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1164                                                WPS_DEV_TYPE_LEN);
1165                 if (p2p->req_dev_types == NULL)
1166                         return -1;
1167                 os_memcpy(p2p->req_dev_types, req_dev_types,
1168                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1169                 p2p->num_req_dev_types = num_req_dev_types;
1170         }
1171
1172         if (dev_id) {
1173                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1174                 p2p->find_dev_id = p2p->find_dev_id_buf;
1175         } else
1176                 p2p->find_dev_id = NULL;
1177
1178         if (seek_count == 0 || !seek) {
1179                 /* Not an ASP search */
1180                 p2p->p2ps_seek = 0;
1181         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1182                 /*
1183                  * An empty seek string means no hash values, but still an ASP
1184                  * search.
1185                  */
1186                 p2p->p2ps_seek_count = 0;
1187                 p2p->p2ps_seek = 1;
1188         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1189                 u8 buf[P2PS_HASH_LEN];
1190                 int i;
1191
1192                 p2p->p2ps_seek_count = seek_count;
1193                 for (i = 0; i < seek_count; i++) {
1194                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1195                                 continue;
1196
1197                         /* If asking for wildcard, don't do others */
1198                         if (os_memcmp(buf, p2p->wild_card_hash,
1199                                       P2PS_HASH_LEN) == 0) {
1200                                 p2p->p2ps_seek_count = 0;
1201                                 break;
1202                         }
1203
1204                         os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1205                                   P2PS_HASH_LEN);
1206                 }
1207                 p2p->p2ps_seek = 1;
1208         } else {
1209                 p2p->p2ps_seek_count = 0;
1210                 p2p->p2ps_seek = 1;
1211         }
1212
1213         /* Special case to perform wildcard search */
1214         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1215                 p2p->p2ps_seek_count = 1;
1216                 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1217         }
1218
1219         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1220         p2p_clear_timeout(p2p);
1221         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1222         p2p->find_type = type;
1223         p2p_device_clear_reported(p2p);
1224         p2p_set_state(p2p, P2P_SEARCH);
1225         p2p->search_delay = search_delay;
1226         p2p->in_search_delay = 0;
1227         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1228         p2p->last_p2p_find_timeout = timeout;
1229         if (timeout)
1230                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1231                                        p2p, NULL);
1232         switch (type) {
1233         case P2P_FIND_START_WITH_FULL:
1234                 if (freq > 0) {
1235                         /*
1236                          * Start with the specified channel and then move to
1237                          * social channels only scans.
1238                          */
1239                         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx,
1240                                                  P2P_SCAN_SPECIFIC, freq,
1241                                                  p2p->num_req_dev_types,
1242                                                  p2p->req_dev_types, dev_id,
1243                                                  DEV_PW_DEFAULT);
1244                         break;
1245                 }
1246                 /* fall through */
1247         case P2P_FIND_PROGRESSIVE:
1248                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1249                                          p2p->num_req_dev_types,
1250                                          p2p->req_dev_types, dev_id,
1251                                          DEV_PW_DEFAULT);
1252                 break;
1253         case P2P_FIND_ONLY_SOCIAL:
1254                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1255                                          p2p->num_req_dev_types,
1256                                          p2p->req_dev_types, dev_id,
1257                                          DEV_PW_DEFAULT);
1258                 break;
1259         default:
1260                 return -1;
1261         }
1262
1263         if (res != 0 && p2p->p2p_scan_running) {
1264                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1265                 /* wait for the previous p2p_scan to complete */
1266                 res = 0; /* do not report failure */
1267         } else if (res != 0) {
1268                 p2p_dbg(p2p, "Failed to start p2p_scan");
1269                 p2p_set_state(p2p, P2P_IDLE);
1270                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1271         }
1272
1273         return res;
1274 }
1275
1276
1277 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1278 {
1279         p2p_dbg(p2p, "Stopping find");
1280         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1281         p2p_clear_timeout(p2p);
1282         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
1283                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1284
1285         p2p->p2ps_seek_count = 0;
1286
1287         p2p_set_state(p2p, P2P_IDLE);
1288         p2p_free_req_dev_types(p2p);
1289         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1290         if (p2p->go_neg_peer)
1291                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1292         p2p->go_neg_peer = NULL;
1293         p2p->sd_peer = NULL;
1294         p2p->invite_peer = NULL;
1295         p2p_stop_listen_for_freq(p2p, freq);
1296         p2p->send_action_in_progress = 0;
1297 }
1298
1299
1300 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1301 {
1302         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1303                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1304                 return;
1305         }
1306         if (p2p->in_listen) {
1307                 p2p->in_listen = 0;
1308                 p2p_clear_timeout(p2p);
1309         }
1310         if (p2p->drv_in_listen) {
1311                 /*
1312                  * The driver may not deliver callback to p2p_listen_end()
1313                  * when the operation gets canceled, so clear the internal
1314                  * variable that is tracking driver state.
1315                  */
1316                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1317                 p2p->drv_in_listen = 0;
1318         }
1319         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1320 }
1321
1322
1323 void p2p_stop_listen(struct p2p_data *p2p)
1324 {
1325         if (p2p->state != P2P_LISTEN_ONLY) {
1326                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1327                 return;
1328         }
1329
1330         p2p_stop_listen_for_freq(p2p, 0);
1331         p2p_set_state(p2p, P2P_IDLE);
1332 }
1333
1334
1335 void p2p_stop_find(struct p2p_data *p2p)
1336 {
1337         p2p->pending_listen_freq = 0;
1338         p2p_stop_find_for_freq(p2p, 0);
1339 }
1340
1341
1342 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1343                                     unsigned int force_freq,
1344                                     unsigned int pref_freq, int go)
1345 {
1346         u8 op_class, op_channel;
1347         unsigned int freq = force_freq ? force_freq : pref_freq;
1348
1349         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1350                 force_freq, pref_freq, go);
1351         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1352                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1353                 return -1;
1354         }
1355
1356         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1357             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1358                                           op_channel))) {
1359                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1360                         freq, op_class, op_channel);
1361                 return -1;
1362         }
1363
1364         p2p->op_reg_class = op_class;
1365         p2p->op_channel = op_channel;
1366
1367         if (force_freq) {
1368                 p2p->channels.reg_classes = 1;
1369                 p2p->channels.reg_class[0].channels = 1;
1370                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1371                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1372         } else {
1373                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1374                           sizeof(struct p2p_channels));
1375         }
1376
1377         return 0;
1378 }
1379
1380
1381 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1382 {
1383         u8 op_class, op_channel;
1384         const int op_classes_5ghz[] = { 124, 125, 115, 0 };
1385         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1386         const int op_classes_vht[] = { 128, 0 };
1387
1388         p2p_dbg(p2p, "Prepare channel best");
1389
1390         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1391             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1392             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1393             == 0) {
1394                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1395                 p2p->op_reg_class = op_class;
1396                 p2p->op_channel = op_channel;
1397         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1398                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1399                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1400                    == 0) {
1401                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1402                 p2p->op_reg_class = op_class;
1403                 p2p->op_channel = op_channel;
1404         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1405                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1406                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1407                                        &op_channel) == 0) {
1408                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1409                 p2p->op_reg_class = op_class;
1410                 p2p->op_channel = op_channel;
1411         } else if (p2p->cfg->num_pref_chan > 0 &&
1412                    p2p_channels_includes(&p2p->cfg->channels,
1413                                          p2p->cfg->pref_chan[0].op_class,
1414                                          p2p->cfg->pref_chan[0].chan)) {
1415                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1416                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1417                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1418         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1419                                       &p2p->op_reg_class, &p2p->op_channel) ==
1420                    0) {
1421                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1422                         p2p->op_reg_class, p2p->op_channel);
1423         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1424                                       &p2p->op_reg_class, &p2p->op_channel) ==
1425                    0) {
1426                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1427                         p2p->op_reg_class, p2p->op_channel);
1428         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1429                                       &p2p->op_reg_class, &p2p->op_channel) ==
1430                    0) {
1431                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1432                         p2p->op_reg_class, p2p->op_channel);
1433         } else if (p2p_channels_includes(&p2p->cfg->channels,
1434                                          p2p->cfg->op_reg_class,
1435                                          p2p->cfg->op_channel)) {
1436                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1437                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1438                 p2p->op_channel = p2p->cfg->op_channel;
1439         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1440                                              &p2p->op_reg_class,
1441                                              &p2p->op_channel) == 0) {
1442                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1443                         p2p->op_reg_class, p2p->op_channel);
1444         } else {
1445                 /* Select any random available channel from the first available
1446                  * operating class */
1447                 p2p_channel_select(&p2p->cfg->channels, NULL,
1448                                    &p2p->op_reg_class,
1449                                    &p2p->op_channel);
1450                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1451                         p2p->op_channel, p2p->op_reg_class);
1452         }
1453
1454         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1455                   sizeof(struct p2p_channels));
1456 }
1457
1458
1459 /**
1460  * p2p_prepare_channel - Select operating channel for GO Negotiation
1461  * @p2p: P2P module context from p2p_init()
1462  * @dev: Selected peer device
1463  * @force_freq: Forced frequency in MHz or 0 if not forced
1464  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1465  * @go: Whether the local end will be forced to be GO
1466  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1467  *
1468  * This function is used to do initial operating channel selection for GO
1469  * Negotiation prior to having received peer information. The selected channel
1470  * may be further optimized in p2p_reselect_channel() once the peer information
1471  * is available.
1472  */
1473 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1474                         unsigned int force_freq, unsigned int pref_freq, int go)
1475 {
1476         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1477                 force_freq, pref_freq, go);
1478         if (force_freq || pref_freq) {
1479                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1480                     0)
1481                         return -1;
1482         } else {
1483                 p2p_prepare_channel_best(p2p);
1484         }
1485         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1486         if (go)
1487                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1488         else if (!force_freq)
1489                 p2p_channels_union_inplace(&p2p->channels,
1490                                            &p2p->cfg->cli_channels);
1491         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1492
1493         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1494                 p2p->op_reg_class, p2p->op_channel,
1495                 force_freq ? " (forced)" : "");
1496
1497         if (force_freq)
1498                 dev->flags |= P2P_DEV_FORCE_FREQ;
1499         else
1500                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1501
1502         return 0;
1503 }
1504
1505
1506 static void p2p_set_dev_persistent(struct p2p_device *dev,
1507                                    int persistent_group)
1508 {
1509         switch (persistent_group) {
1510         case 0:
1511                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1512                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1513                 break;
1514         case 1:
1515                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1516                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1517                 break;
1518         case 2:
1519                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1520                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1521                 break;
1522         }
1523 }
1524
1525
1526 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1527                 enum p2p_wps_method wps_method,
1528                 int go_intent, const u8 *own_interface_addr,
1529                 unsigned int force_freq, int persistent_group,
1530                 const u8 *force_ssid, size_t force_ssid_len,
1531                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1532 {
1533         struct p2p_device *dev;
1534
1535         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1536                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1537                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1538                 "oob_pw_id=%u",
1539                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1540                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1541
1542         dev = p2p_get_device(p2p, peer_addr);
1543         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1544                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1545                         MAC2STR(peer_addr));
1546                 return -1;
1547         }
1548
1549         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1550                                 go_intent == 15) < 0)
1551                 return -1;
1552
1553         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1554                 if (!(dev->info.dev_capab &
1555                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1556                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1557                                 " that is in a group and is not discoverable",
1558                                 MAC2STR(peer_addr));
1559                         return -1;
1560                 }
1561                 if (dev->oper_freq <= 0) {
1562                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1563                                 " with incomplete information",
1564                                 MAC2STR(peer_addr));
1565                         return -1;
1566                 }
1567
1568                 /*
1569                  * First, try to connect directly. If the peer does not
1570                  * acknowledge frames, assume it is sleeping and use device
1571                  * discoverability via the GO at that point.
1572                  */
1573         }
1574
1575         p2p->ssid_set = 0;
1576         if (force_ssid) {
1577                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1578                                   force_ssid, force_ssid_len);
1579                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1580                 p2p->ssid_len = force_ssid_len;
1581                 p2p->ssid_set = 1;
1582         }
1583
1584         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1585         dev->flags &= ~P2P_DEV_USER_REJECTED;
1586         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1587         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1588         if (pd_before_go_neg)
1589                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1590         else {
1591                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1592                 /*
1593                  * Assign dialog token and tie breaker here to use the same
1594                  * values in each retry within the same GO Negotiation exchange.
1595                  */
1596                 dev->dialog_token++;
1597                 if (dev->dialog_token == 0)
1598                         dev->dialog_token = 1;
1599                 dev->tie_breaker = p2p->next_tie_breaker;
1600                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1601         }
1602         dev->connect_reqs = 0;
1603         dev->go_neg_req_sent = 0;
1604         dev->go_state = UNKNOWN_GO;
1605         p2p_set_dev_persistent(dev, persistent_group);
1606         p2p->go_intent = go_intent;
1607         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1608
1609         if (p2p->state != P2P_IDLE)
1610                 p2p_stop_find(p2p);
1611
1612         if (p2p->after_scan_tx) {
1613                 /*
1614                  * We need to drop the pending frame to avoid issues with the
1615                  * new GO Negotiation, e.g., when the pending frame was from a
1616                  * previous attempt at starting a GO Negotiation.
1617                  */
1618                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1619                 os_free(p2p->after_scan_tx);
1620                 p2p->after_scan_tx = NULL;
1621         }
1622
1623         dev->wps_method = wps_method;
1624         dev->oob_pw_id = oob_pw_id;
1625         dev->status = P2P_SC_SUCCESS;
1626
1627         if (p2p->p2p_scan_running) {
1628                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1629                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1630                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1631                 return 0;
1632         }
1633         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1634
1635         return p2p_connect_send(p2p, dev);
1636 }
1637
1638
1639 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1640                   enum p2p_wps_method wps_method,
1641                   int go_intent, const u8 *own_interface_addr,
1642                   unsigned int force_freq, int persistent_group,
1643                   const u8 *force_ssid, size_t force_ssid_len,
1644                   unsigned int pref_freq, u16 oob_pw_id)
1645 {
1646         struct p2p_device *dev;
1647
1648         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1649                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1650                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1651                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1652                 wps_method, persistent_group, oob_pw_id);
1653
1654         dev = p2p_get_device(p2p, peer_addr);
1655         if (dev == NULL) {
1656                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1657                         MAC2STR(peer_addr));
1658                 return -1;
1659         }
1660
1661         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1662                                 15) < 0)
1663                 return -1;
1664
1665         p2p->ssid_set = 0;
1666         if (force_ssid) {
1667                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1668                                   force_ssid, force_ssid_len);
1669                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1670                 p2p->ssid_len = force_ssid_len;
1671                 p2p->ssid_set = 1;
1672         }
1673
1674         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1675         dev->flags &= ~P2P_DEV_USER_REJECTED;
1676         dev->go_neg_req_sent = 0;
1677         dev->go_state = UNKNOWN_GO;
1678         p2p_set_dev_persistent(dev, persistent_group);
1679         p2p->go_intent = go_intent;
1680         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1681
1682         dev->wps_method = wps_method;
1683         dev->oob_pw_id = oob_pw_id;
1684         dev->status = P2P_SC_SUCCESS;
1685
1686         return 0;
1687 }
1688
1689
1690 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1691                       struct p2p_device *dev, struct p2p_message *msg)
1692 {
1693         os_get_reltime(&dev->last_seen);
1694
1695         p2p_copy_wps_info(p2p, dev, 0, msg);
1696
1697         if (msg->listen_channel) {
1698                 int freq;
1699                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1700                                            msg->listen_channel[4]);
1701                 if (freq < 0) {
1702                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1703                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1704                                 msg->listen_channel[0],
1705                                 msg->listen_channel[1],
1706                                 msg->listen_channel[2],
1707                                 msg->listen_channel[3],
1708                                 msg->listen_channel[4]);
1709                 } else {
1710                         p2p_dbg(p2p, "Update peer " MACSTR
1711                                 " Listen channel: %u -> %u MHz",
1712                                 MAC2STR(dev->info.p2p_device_addr),
1713                                 dev->listen_freq, freq);
1714                         dev->listen_freq = freq;
1715                 }
1716         }
1717
1718         if (msg->wfd_subelems) {
1719                 wpabuf_free(dev->info.wfd_subelems);
1720                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1721         }
1722
1723         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1724                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1725                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1726         } else {
1727                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1728                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1729                         "listen_freq=%d",
1730                         MAC2STR(dev->info.p2p_device_addr),
1731                         dev->info.dev_capab, dev->info.group_capab,
1732                         dev->info.device_name, dev->listen_freq);
1733         }
1734
1735         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1736
1737         if (dev->flags & P2P_DEV_USER_REJECTED) {
1738                 p2p_dbg(p2p, "Do not report rejected device");
1739                 return;
1740         }
1741
1742         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1743                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1744         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1745 }
1746
1747
1748 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1749 {
1750         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1751         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1752         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1753                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1754         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1755 }
1756
1757
1758 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1759 {
1760         if (p2p->ssid_set) {
1761                 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len);
1762                 params->ssid_len = p2p->ssid_len;
1763         } else {
1764                 p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1765         }
1766         p2p->ssid_set = 0;
1767
1768         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1769         return 0;
1770 }
1771
1772
1773 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1774 {
1775         struct p2p_go_neg_results res;
1776         int go = peer->go_state == LOCAL_GO;
1777         struct p2p_channels intersection;
1778
1779         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1780                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1781
1782         os_memset(&res, 0, sizeof(res));
1783         res.role_go = go;
1784         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1785         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1786         res.wps_method = peer->wps_method;
1787         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1788                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1789                         res.persistent_group = 2;
1790                 else
1791                         res.persistent_group = 1;
1792         }
1793
1794         if (go) {
1795                 /* Setup AP mode for WPS provisioning */
1796                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1797                                                p2p->op_channel);
1798                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1799                 res.ssid_len = p2p->ssid_len;
1800                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1801         } else {
1802                 res.freq = peer->oper_freq;
1803                 if (p2p->ssid_len) {
1804                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1805                         res.ssid_len = p2p->ssid_len;
1806                 }
1807         }
1808
1809         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1810         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1811         p2p_channels_intersect(&p2p->channels, &peer->channels,
1812                                &intersection);
1813         if (go) {
1814                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1815                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1816                                   &intersection);
1817         }
1818
1819         p2p_channels_to_freqs(&intersection, res.freq_list,
1820                               P2P_MAX_CHANNELS);
1821
1822         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1823
1824         p2p_clear_timeout(p2p);
1825         p2p->ssid_set = 0;
1826         peer->go_neg_req_sent = 0;
1827         peer->wps_method = WPS_NOT_READY;
1828         peer->oob_pw_id = 0;
1829         wpabuf_free(peer->go_neg_conf);
1830         peer->go_neg_conf = NULL;
1831
1832         p2p_set_state(p2p, P2P_PROVISIONING);
1833         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1834 }
1835
1836
1837 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1838                               const u8 *data, size_t len, int rx_freq)
1839 {
1840         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1841         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1842
1843         if (len < 1)
1844                 return;
1845
1846         switch (data[0]) {
1847         case P2P_GO_NEG_REQ:
1848                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1849                 break;
1850         case P2P_GO_NEG_RESP:
1851                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1852                 break;
1853         case P2P_GO_NEG_CONF:
1854                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1855                 break;
1856         case P2P_INVITATION_REQ:
1857                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1858                                            rx_freq);
1859                 break;
1860         case P2P_INVITATION_RESP:
1861                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1862                 break;
1863         case P2P_PROV_DISC_REQ:
1864                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1865                 break;
1866         case P2P_PROV_DISC_RESP:
1867                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1868                 break;
1869         case P2P_DEV_DISC_REQ:
1870                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1871                 break;
1872         case P2P_DEV_DISC_RESP:
1873                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1874                 break;
1875         default:
1876                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1877                         data[0]);
1878                 break;
1879         }
1880 }
1881
1882
1883 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1884                                  const u8 *sa, const u8 *bssid, const u8 *data,
1885                                  size_t len, int freq)
1886 {
1887         if (len < 1)
1888                 return;
1889
1890         switch (data[0]) {
1891         case WLAN_PA_VENDOR_SPECIFIC:
1892                 data++;
1893                 len--;
1894                 if (len < 4)
1895                         return;
1896                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1897                         return;
1898
1899                 data += 4;
1900                 len -= 4;
1901
1902                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1903                 break;
1904         case WLAN_PA_GAS_INITIAL_REQ:
1905                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1906                 break;
1907         case WLAN_PA_GAS_INITIAL_RESP:
1908                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1909                 break;
1910         case WLAN_PA_GAS_COMEBACK_REQ:
1911                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1912                 break;
1913         case WLAN_PA_GAS_COMEBACK_RESP:
1914                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1915                 break;
1916         }
1917 }
1918
1919
1920 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1921                    const u8 *bssid, u8 category,
1922                    const u8 *data, size_t len, int freq)
1923 {
1924         if (category == WLAN_ACTION_PUBLIC) {
1925                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1926                 return;
1927         }
1928
1929         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1930                 return;
1931
1932         if (len < 4)
1933                 return;
1934
1935         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1936                 return;
1937         data += 4;
1938         len -= 4;
1939
1940         /* P2P action frame */
1941         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1942         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1943
1944         if (len < 1)
1945                 return;
1946         switch (data[0]) {
1947         case P2P_NOA:
1948                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1949                 /* TODO */
1950                 break;
1951         case P2P_PRESENCE_REQ:
1952                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1953                 break;
1954         case P2P_PRESENCE_RESP:
1955                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1956                 break;
1957         case P2P_GO_DISC_REQ:
1958                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1959                 break;
1960         default:
1961                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1962                 break;
1963         }
1964 }
1965
1966
1967 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1968 {
1969         struct p2p_data *p2p = eloop_ctx;
1970         if (p2p->go_neg_peer == NULL)
1971                 return;
1972         if (p2p->pending_listen_freq) {
1973                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1974                 p2p->pending_listen_freq = 0;
1975         }
1976         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1977         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1978         /*
1979          * Set new timeout to make sure a previously set one does not expire
1980          * too quickly while waiting for the GO Negotiation to complete.
1981          */
1982         p2p_set_timeout(p2p, 0, 500000);
1983         p2p_connect_send(p2p, p2p->go_neg_peer);
1984 }
1985
1986
1987 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1988 {
1989         struct p2p_data *p2p = eloop_ctx;
1990         if (p2p->invite_peer == NULL)
1991                 return;
1992         if (p2p->pending_listen_freq) {
1993                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1994                 p2p->pending_listen_freq = 0;
1995         }
1996         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1997         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1998                         p2p->invite_dev_pw_id);
1999 }
2000
2001
2002 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
2003                                        const u8 *ie, size_t ie_len)
2004 {
2005         struct p2p_message msg;
2006         struct p2p_device *dev;
2007
2008         os_memset(&msg, 0, sizeof(msg));
2009         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
2010         {
2011                 p2p_parse_free(&msg);
2012                 return; /* not a P2P probe */
2013         }
2014
2015         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
2016             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
2017             != 0) {
2018                 /* The Probe Request is not part of P2P Device Discovery. It is
2019                  * not known whether the source address of the frame is the P2P
2020                  * Device Address or P2P Interface Address. Do not add a new
2021                  * peer entry based on this frames.
2022                  */
2023                 p2p_parse_free(&msg);
2024                 return;
2025         }
2026
2027         dev = p2p_get_device(p2p, addr);
2028         if (dev) {
2029                 if (dev->country[0] == 0 && msg.listen_channel)
2030                         os_memcpy(dev->country, msg.listen_channel, 3);
2031                 os_get_reltime(&dev->last_seen);
2032                 p2p_parse_free(&msg);
2033                 return; /* already known */
2034         }
2035
2036         dev = p2p_create_device(p2p, addr);
2037         if (dev == NULL) {
2038                 p2p_parse_free(&msg);
2039                 return;
2040         }
2041
2042         os_get_reltime(&dev->last_seen);
2043         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
2044
2045         if (msg.listen_channel) {
2046                 os_memcpy(dev->country, msg.listen_channel, 3);
2047                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2048                                                        msg.listen_channel[4]);
2049         }
2050
2051         p2p_copy_wps_info(p2p, dev, 1, &msg);
2052
2053         if (msg.wfd_subelems) {
2054                 wpabuf_free(dev->info.wfd_subelems);
2055                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2056         }
2057
2058         p2p_parse_free(&msg);
2059
2060         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2061                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2062                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2063                 dev->info.group_capab, dev->info.device_name,
2064                 dev->listen_freq);
2065 }
2066
2067
2068 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2069                                                 const u8 *addr,
2070                                                 struct p2p_message *msg)
2071 {
2072         struct p2p_device *dev;
2073
2074         dev = p2p_get_device(p2p, addr);
2075         if (dev) {
2076                 os_get_reltime(&dev->last_seen);
2077                 return dev; /* already known */
2078         }
2079
2080         dev = p2p_create_device(p2p, addr);
2081         if (dev == NULL)
2082                 return NULL;
2083
2084         p2p_add_dev_info(p2p, addr, dev, msg);
2085
2086         return dev;
2087 }
2088
2089
2090 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2091 {
2092         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2093                 return 1;
2094         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2095             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2096             WPA_GET_BE16(&req_dev_type[6]) == 0)
2097                 return 1; /* Category match with wildcard OUI/sub-category */
2098         return 0;
2099 }
2100
2101
2102 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2103                         size_t num_req_dev_type)
2104 {
2105         size_t i;
2106         for (i = 0; i < num_req_dev_type; i++) {
2107                 if (dev_type_match(dev_type, req_dev_type[i]))
2108                         return 1;
2109         }
2110         return 0;
2111 }
2112
2113
2114 /**
2115  * p2p_match_dev_type - Match local device type with requested type
2116  * @p2p: P2P module context from p2p_init()
2117  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2118  * Returns: 1 on match, 0 on mismatch
2119  *
2120  * This function can be used to match the Requested Device Type attribute in
2121  * WPS IE with the local device types for deciding whether to reply to a Probe
2122  * Request frame.
2123  */
2124 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2125 {
2126         struct wps_parse_attr attr;
2127         size_t i;
2128
2129         if (wps_parse_msg(wps, &attr))
2130                 return 1; /* assume no Requested Device Type attributes */
2131
2132         if (attr.num_req_dev_type == 0)
2133                 return 1; /* no Requested Device Type attributes -> match */
2134
2135         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2136                                 attr.num_req_dev_type))
2137                 return 1; /* Own Primary Device Type matches */
2138
2139         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2140                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2141                                         attr.req_dev_type,
2142                                         attr.num_req_dev_type))
2143                         return 1; /* Own Secondary Device Type matches */
2144         }
2145
2146         /* No matching device type found */
2147         return 0;
2148 }
2149
2150
2151 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2152 {
2153         struct wpabuf *buf;
2154         u8 *len;
2155         int pw_id = -1;
2156         size_t extra = 0;
2157
2158 #ifdef CONFIG_WIFI_DISPLAY
2159         if (p2p->wfd_ie_probe_resp)
2160                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2161 #endif /* CONFIG_WIFI_DISPLAY */
2162
2163         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2164                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2165
2166         if (p2p->query_count)
2167                 extra += MAX_SVC_ADV_IE_LEN;
2168
2169         buf = wpabuf_alloc(1000 + extra);
2170         if (buf == NULL)
2171                 return NULL;
2172
2173         if (p2p->go_neg_peer) {
2174                 /* Advertise immediate availability of WPS credential */
2175                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2176         }
2177
2178         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2179                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2180                 wpabuf_free(buf);
2181                 return NULL;
2182         }
2183
2184 #ifdef CONFIG_WIFI_DISPLAY
2185         if (p2p->wfd_ie_probe_resp)
2186                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2187 #endif /* CONFIG_WIFI_DISPLAY */
2188
2189         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2190                 wpabuf_put_buf(buf,
2191                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2192
2193         /* P2P IE */
2194         len = p2p_buf_add_ie_hdr(buf);
2195         p2p_buf_add_capability(buf, p2p->dev_capab &
2196                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2197         if (p2p->ext_listen_interval)
2198                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2199                                               p2p->ext_listen_interval);
2200         p2p_buf_add_device_info(buf, p2p, NULL);
2201         p2p_buf_update_ie_hdr(buf, len);
2202
2203         if (p2p->query_count) {
2204                 p2p_buf_add_service_instance(buf, p2p, p2p->query_count,
2205                                              p2p->query_hash,
2206                                              p2p->p2ps_adv_list);
2207         }
2208
2209         return buf;
2210 }
2211
2212
2213 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash)
2214 {
2215         struct p2ps_advertisement *adv_data;
2216
2217         p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list);
2218
2219         /* Wildcard always matches if we have actual services */
2220         if (os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0)
2221                 return p2p->p2ps_adv_list != NULL;
2222
2223         adv_data = p2p->p2ps_adv_list;
2224         while (adv_data) {
2225                 p2p_dbg(p2p, "ASP hash: %x =? %x", hash[0], adv_data->hash[0]);
2226                 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0)
2227                         return 1;
2228                 adv_data = adv_data->next;
2229         }
2230
2231         return 0;
2232 }
2233
2234
2235 static enum p2p_probe_req_status
2236 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2237                 const u8 *bssid, const u8 *ie, size_t ie_len,
2238                 unsigned int rx_freq)
2239 {
2240         struct ieee802_11_elems elems;
2241         struct wpabuf *buf;
2242         struct ieee80211_mgmt *resp;
2243         struct p2p_message msg;
2244         struct wpabuf *ies;
2245         u8 channel, op_class;
2246
2247         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2248             ParseFailed) {
2249                 /* Ignore invalid Probe Request frames */
2250                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2251                 return P2P_PREQ_MALFORMED;
2252         }
2253
2254         if (elems.p2p == NULL) {
2255                 /* not a P2P probe - ignore it */
2256                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2257                 return P2P_PREQ_NOT_P2P;
2258         }
2259
2260         if (dst && !is_broadcast_ether_addr(dst) &&
2261             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2262                 /* Not sent to the broadcast address or our P2P Device Address
2263                  */
2264                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2265                         MAC2STR(dst));
2266                 return P2P_PREQ_NOT_PROCESSED;
2267         }
2268
2269         if (bssid && !is_broadcast_ether_addr(bssid)) {
2270                 /* Not sent to the Wildcard BSSID */
2271                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2272                         MAC2STR(bssid));
2273                 return P2P_PREQ_NOT_PROCESSED;
2274         }
2275
2276         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2277             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2278             0) {
2279                 /* not using P2P Wildcard SSID - ignore */
2280                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2281                 return P2P_PREQ_NOT_PROCESSED;
2282         }
2283
2284         if (supp_rates_11b_only(&elems)) {
2285                 /* Indicates support for 11b rates only */
2286                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2287                 return P2P_PREQ_NOT_P2P;
2288         }
2289
2290         os_memset(&msg, 0, sizeof(msg));
2291         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2292                 /* Could not parse P2P attributes */
2293                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2294                 return P2P_PREQ_NOT_P2P;
2295         }
2296
2297         p2p->p2ps_svc_found = 0;
2298
2299         if (msg.service_hash && msg.service_hash_count) {
2300                 const u8 *hash = msg.service_hash;
2301                 u8 *dest = p2p->query_hash;
2302                 u8 i;
2303
2304                 p2p->query_count = 0;
2305                 for (i = 0; i < msg.service_hash_count; i++) {
2306                         if (p2p_service_find_asp(p2p, hash)) {
2307                                 p2p->p2ps_svc_found = 1;
2308
2309                                 if (!os_memcmp(hash, p2p->wild_card_hash,
2310                                                P2PS_HASH_LEN)) {
2311                                         /* We found match(es) but wildcard
2312                                          * will return all */
2313                                         p2p->query_count = 1;
2314                                         os_memcpy(p2p->query_hash, hash,
2315                                                   P2PS_HASH_LEN);
2316                                         break;
2317                                 }
2318
2319                                 /* Save each matching hash */
2320                                 if (p2p->query_count < P2P_MAX_QUERY_HASH) {
2321                                         os_memcpy(dest, hash, P2PS_HASH_LEN);
2322                                         dest += P2PS_HASH_LEN;
2323                                         p2p->query_count++;
2324                                 } else {
2325                                         /* We found match(es) but too many to
2326                                          * return all */
2327                                         p2p->query_count = 0;
2328                                         break;
2329                                 }
2330                         }
2331                         hash += P2PS_HASH_LEN;
2332                 }
2333
2334                 p2p_dbg(p2p, "ASP adv found: %d", p2p->p2ps_svc_found);
2335
2336                 /* Probed hash unknown */
2337                 if (!p2p->p2ps_svc_found) {
2338                         p2p_parse_free(&msg);
2339                         return P2P_PREQ_NOT_PROCESSED;
2340                 }
2341         } else {
2342                 /* This is not a P2PS Probe Request */
2343                 p2p->query_count = 0;
2344                 p2p_dbg(p2p, "No P2PS Hash in Probe Request");
2345
2346                 if (!p2p->in_listen || !p2p->drv_in_listen) {
2347                         /* not in Listen state - ignore Probe Request */
2348                         p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2349                                 p2p->in_listen, p2p->drv_in_listen);
2350                         p2p_parse_free(&msg);
2351                         return P2P_PREQ_NOT_LISTEN;
2352                 }
2353         }
2354
2355         if (msg.device_id &&
2356             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2357                 /* Device ID did not match */
2358                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2359                         MAC2STR(msg.device_id));
2360                 p2p_parse_free(&msg);
2361                 return P2P_PREQ_NOT_PROCESSED;
2362         }
2363
2364         /* Check Requested Device Type match */
2365         if (msg.wps_attributes &&
2366             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2367                 /* No match with Requested Device Type */
2368                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2369                 p2p_parse_free(&msg);
2370                 return P2P_PREQ_NOT_PROCESSED;
2371         }
2372         p2p_parse_free(&msg);
2373
2374         if (!p2p->cfg->send_probe_resp) {
2375                 /* Response generated elsewhere */
2376                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2377                 return P2P_PREQ_NOT_PROCESSED;
2378         }
2379
2380         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2381
2382         /*
2383          * We do not really have a specific BSS that this frame is advertising,
2384          * so build a frame that has some information in valid format. This is
2385          * really only used for discovery purposes, not to learn exact BSS
2386          * parameters.
2387          */
2388         ies = p2p_build_probe_resp_ies(p2p);
2389         if (ies == NULL)
2390                 return P2P_PREQ_NOT_PROCESSED;
2391
2392         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2393         if (buf == NULL) {
2394                 wpabuf_free(ies);
2395                 return P2P_PREQ_NOT_PROCESSED;
2396         }
2397
2398         resp = NULL;
2399         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2400
2401         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2402                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2403         os_memcpy(resp->da, addr, ETH_ALEN);
2404         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2405         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2406         resp->u.probe_resp.beacon_int = host_to_le16(100);
2407         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2408         resp->u.probe_resp.capab_info =
2409                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2410                              WLAN_CAPABILITY_PRIVACY |
2411                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2412
2413         wpabuf_put_u8(buf, WLAN_EID_SSID);
2414         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2415         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2416
2417         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2418         wpabuf_put_u8(buf, 8);
2419         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2420         wpabuf_put_u8(buf, 90 / 5);
2421         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2422         wpabuf_put_u8(buf, 180 / 5);
2423         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2424         wpabuf_put_u8(buf, 360 / 5);
2425         wpabuf_put_u8(buf, 480 / 5);
2426         wpabuf_put_u8(buf, 540 / 5);
2427
2428         if (!rx_freq) {
2429                 channel = p2p->cfg->channel;
2430         } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) {
2431                 wpabuf_free(ies);
2432                 wpabuf_free(buf);
2433                 return P2P_PREQ_NOT_PROCESSED;
2434         }
2435
2436         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2437         wpabuf_put_u8(buf, 1);
2438         wpabuf_put_u8(buf, channel);
2439
2440         wpabuf_put_buf(buf, ies);
2441         wpabuf_free(ies);
2442
2443         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2444
2445         wpabuf_free(buf);
2446
2447         return P2P_PREQ_PROCESSED;
2448 }
2449
2450
2451 enum p2p_probe_req_status
2452 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2453                  const u8 *bssid, const u8 *ie, size_t ie_len,
2454                  unsigned int rx_freq)
2455 {
2456         enum p2p_probe_req_status res;
2457
2458         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2459
2460         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq);
2461         p2p->query_count = 0;
2462
2463         if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED)
2464                 return res;
2465
2466         /*
2467          * Activate a pending GO Negotiation/Invite flow if a received Probe
2468          * Request frame is from an expected peer. Some devices may share the
2469          * same address for P2P and non-P2P STA running simultaneously. The
2470          * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe()
2471          * return values verified above ensure we are handling a Probe Request
2472          * frame from a P2P peer.
2473          */
2474         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2475             p2p->go_neg_peer &&
2476             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2477             == 0 &&
2478             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2479                 /* Received a Probe Request from GO Negotiation peer */
2480                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2481                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2482                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2483                 return res;
2484         }
2485
2486         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2487             p2p->invite_peer &&
2488             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2489             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2490             == 0) {
2491                 /* Received a Probe Request from Invite peer */
2492                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2493                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2494                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2495                 return res;
2496         }
2497
2498         return res;
2499 }
2500
2501
2502 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2503                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2504 {
2505         struct wpabuf *tmp;
2506         u8 *lpos;
2507         size_t tmplen;
2508         int res;
2509         u8 group_capab;
2510         struct p2p_message msg;
2511
2512         if (p2p_ie == NULL)
2513                 return 0; /* WLAN AP is not a P2P manager */
2514
2515         os_memset(&msg, 0, sizeof(msg));
2516         if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0)
2517                 return 0;
2518
2519         p2p_dbg(p2p, "BSS P2P manageability %s",
2520                 msg.manageability ? "enabled" : "disabled");
2521
2522         if (!msg.manageability)
2523                 return 0;
2524
2525         /*
2526          * (Re)Association Request - P2P IE
2527          * P2P Capability attribute (shall be present)
2528          * P2P Interface attribute (present if concurrent device and
2529          *      P2P Management is enabled)
2530          */
2531         tmp = wpabuf_alloc(200);
2532         if (tmp == NULL)
2533                 return -1;
2534
2535         lpos = p2p_buf_add_ie_hdr(tmp);
2536         group_capab = 0;
2537         if (p2p->num_groups > 0) {
2538                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2539                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2540                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2541                     p2p->cross_connect)
2542                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2543         }
2544         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2545         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2546             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2547                 p2p_buf_add_p2p_interface(tmp, p2p);
2548         p2p_buf_update_ie_hdr(tmp, lpos);
2549
2550         tmplen = wpabuf_len(tmp);
2551         if (tmplen > len)
2552                 res = -1;
2553         else {
2554                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2555                 res = tmplen;
2556         }
2557         wpabuf_free(tmp);
2558
2559         return res;
2560 }
2561
2562
2563 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2564                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2565 {
2566         struct wpabuf *tmp;
2567         u8 *lpos;
2568         struct p2p_device *peer;
2569         size_t tmplen;
2570         int res;
2571         size_t extra = 0;
2572
2573         if (!p2p_group)
2574                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2575
2576 #ifdef CONFIG_WIFI_DISPLAY
2577         if (p2p->wfd_ie_assoc_req)
2578                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2579 #endif /* CONFIG_WIFI_DISPLAY */
2580
2581         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2582                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2583
2584         /*
2585          * (Re)Association Request - P2P IE
2586          * P2P Capability attribute (shall be present)
2587          * Extended Listen Timing (may be present)
2588          * P2P Device Info attribute (shall be present)
2589          */
2590         tmp = wpabuf_alloc(200 + extra);
2591         if (tmp == NULL)
2592                 return -1;
2593
2594 #ifdef CONFIG_WIFI_DISPLAY
2595         if (p2p->wfd_ie_assoc_req)
2596                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2597 #endif /* CONFIG_WIFI_DISPLAY */
2598
2599         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2600                 wpabuf_put_buf(tmp,
2601                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2602
2603         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2604
2605         lpos = p2p_buf_add_ie_hdr(tmp);
2606         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2607         if (p2p->ext_listen_interval)
2608                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2609                                               p2p->ext_listen_interval);
2610         p2p_buf_add_device_info(tmp, p2p, peer);
2611         p2p_buf_update_ie_hdr(tmp, lpos);
2612
2613         tmplen = wpabuf_len(tmp);
2614         if (tmplen > len)
2615                 res = -1;
2616         else {
2617                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2618                 res = tmplen;
2619         }
2620         wpabuf_free(tmp);
2621
2622         return res;
2623 }
2624
2625
2626 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2627 {
2628         struct wpabuf *p2p_ie;
2629         int ret;
2630
2631         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2632         if (p2p_ie == NULL)
2633                 return 0;
2634
2635         ret = p2p_attr_text(p2p_ie, buf, end);
2636         wpabuf_free(p2p_ie);
2637         return ret;
2638 }
2639
2640
2641 struct p2ps_advertisement *
2642 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2643 {
2644         struct p2ps_advertisement *adv_data;
2645
2646         if (!p2p)
2647                 return NULL;
2648
2649         adv_data = p2p->p2ps_adv_list;
2650         while (adv_data) {
2651                 if (adv_data->id == adv_id)
2652                         return adv_data;
2653                 adv_data = adv_data->next;
2654         }
2655
2656         return NULL;
2657 }
2658
2659
2660 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2661 {
2662         struct p2ps_advertisement *adv_data;
2663         struct p2ps_advertisement **prior;
2664
2665         if (!p2p)
2666                 return -1;
2667
2668         adv_data = p2p->p2ps_adv_list;
2669         prior = &p2p->p2ps_adv_list;
2670         while (adv_data) {
2671                 if (adv_data->id == adv_id) {
2672                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2673                         *prior = adv_data->next;
2674                         os_free(adv_data);
2675                         return 0;
2676                 }
2677                 prior = &adv_data->next;
2678                 adv_data = adv_data->next;
2679         }
2680
2681         return -1;
2682 }
2683
2684
2685 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2686                         const char *adv_str, u8 svc_state, u16 config_methods,
2687                         const char *svc_info)
2688 {
2689         struct p2ps_advertisement *adv_data, *tmp, **prev;
2690         u8 buf[P2PS_HASH_LEN];
2691         size_t adv_data_len, adv_len, info_len = 0;
2692
2693         if (!p2p || !adv_str || !adv_str[0])
2694                 return -1;
2695
2696         if (!(config_methods & p2p->cfg->config_methods)) {
2697                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2698                         config_methods, p2p->cfg->config_methods);
2699                 return -1;
2700         }
2701
2702         if (!p2ps_gen_hash(p2p, adv_str, buf))
2703                 return -1;
2704
2705         if (svc_info)
2706                 info_len = os_strlen(svc_info);
2707         adv_len = os_strlen(adv_str);
2708         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2709                 info_len + 1;
2710
2711         adv_data = os_zalloc(adv_data_len);
2712         if (!adv_data)
2713                 return -1;
2714
2715         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2716         adv_data->id = adv_id;
2717         adv_data->state = svc_state;
2718         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2719         adv_data->auto_accept = (u8) auto_accept;
2720         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2721
2722         if (svc_info && info_len) {
2723                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2724                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2725         }
2726
2727         /*
2728          * Group Advertisements by service string. They do not need to be
2729          * sorted, but groups allow easier Probe Response instance grouping
2730          */
2731         tmp = p2p->p2ps_adv_list;
2732         prev = &p2p->p2ps_adv_list;
2733         while (tmp) {
2734                 if (tmp->id == adv_data->id) {
2735                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2736                                 os_free(adv_data);
2737                                 return -1;
2738                         }
2739                         adv_data->next = tmp->next;
2740                         *prev = adv_data;
2741                         os_free(tmp);
2742                         goto inserted;
2743                 } else {
2744                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2745                                 adv_data->next = tmp->next;
2746                                 tmp->next = adv_data;
2747                                 goto inserted;
2748                         }
2749                 }
2750                 prev = &tmp->next;
2751                 tmp = tmp->next;
2752         }
2753
2754         /* No svc_name match found */
2755         adv_data->next = p2p->p2ps_adv_list;
2756         p2p->p2ps_adv_list = adv_data;
2757
2758 inserted:
2759         p2p_dbg(p2p,
2760                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2761                 adv_id, adv_data->config_methods, svc_state, adv_str);
2762
2763         return 0;
2764 }
2765
2766
2767 void p2p_service_flush_asp(struct p2p_data *p2p)
2768 {
2769         struct p2ps_advertisement *adv, *prev;
2770
2771         if (!p2p)
2772                 return;
2773
2774         adv = p2p->p2ps_adv_list;
2775         while (adv) {
2776                 prev = adv;
2777                 adv = adv->next;
2778                 os_free(prev);
2779         }
2780
2781         p2p->p2ps_adv_list = NULL;
2782         p2p_dbg(p2p, "All ASP advertisements flushed");
2783 }
2784
2785
2786 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2787 {
2788         struct p2p_message msg;
2789
2790         os_memset(&msg, 0, sizeof(msg));
2791         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2792                 return -1;
2793
2794         if (msg.p2p_device_addr) {
2795                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2796                 return 0;
2797         } else if (msg.device_id) {
2798                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2799                 return 0;
2800         }
2801         return -1;
2802 }
2803
2804
2805 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2806 {
2807         struct wpabuf *p2p_ie;
2808         int ret;
2809
2810         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2811                                              P2P_IE_VENDOR_TYPE);
2812         if (p2p_ie == NULL)
2813                 return -1;
2814         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2815         wpabuf_free(p2p_ie);
2816         return ret;
2817 }
2818
2819
2820 static void p2p_clear_go_neg(struct p2p_data *p2p)
2821 {
2822         p2p->go_neg_peer = NULL;
2823         p2p_clear_timeout(p2p);
2824         p2p_set_state(p2p, P2P_IDLE);
2825 }
2826
2827
2828 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2829 {
2830         if (p2p->go_neg_peer == NULL) {
2831                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2832                 return; /* No pending Group Formation */
2833         }
2834
2835         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2836             0) {
2837                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2838                         MACSTR " (GO Negotiation peer " MACSTR ")",
2839                         MAC2STR(mac_addr),
2840                         MAC2STR(p2p->go_neg_peer->intended_addr));
2841                 return; /* Ignore unexpected peer address */
2842         }
2843
2844         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2845                 MAC2STR(mac_addr));
2846
2847         p2p_clear_go_neg(p2p);
2848 }
2849
2850
2851 void p2p_group_formation_failed(struct p2p_data *p2p)
2852 {
2853         if (p2p->go_neg_peer == NULL) {
2854                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2855                 return; /* No pending Group Formation */
2856         }
2857
2858         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2859                 MAC2STR(p2p->go_neg_peer->intended_addr));
2860
2861         p2p_clear_go_neg(p2p);
2862 }
2863
2864
2865 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2866 {
2867         struct p2p_data *p2p;
2868
2869         if (cfg->max_peers < 1 ||
2870             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2871                 return NULL;
2872
2873         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2874         if (p2p == NULL)
2875                 return NULL;
2876         p2p->cfg = (struct p2p_config *) (p2p + 1);
2877         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2878         if (cfg->dev_name)
2879                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2880         if (cfg->manufacturer)
2881                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2882         if (cfg->model_name)
2883                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2884         if (cfg->model_number)
2885                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2886         if (cfg->serial_number)
2887                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2888         if (cfg->pref_chan) {
2889                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2890                                                 sizeof(struct p2p_channel));
2891                 if (p2p->cfg->pref_chan) {
2892                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2893                                   cfg->num_pref_chan *
2894                                   sizeof(struct p2p_channel));
2895                 } else
2896                         p2p->cfg->num_pref_chan = 0;
2897         }
2898
2899         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2900
2901         p2p->min_disc_int = 1;
2902         p2p->max_disc_int = 3;
2903         p2p->max_disc_tu = -1;
2904
2905         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2906                 p2p->next_tie_breaker = 0;
2907         p2p->next_tie_breaker &= 0x01;
2908         if (cfg->sd_request)
2909                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2910         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2911         if (cfg->concurrent_operations)
2912                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2913         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2914
2915         dl_list_init(&p2p->devices);
2916
2917         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2918                                p2p_expiration_timeout, p2p, NULL);
2919
2920         p2p->go_timeout = 100;
2921         p2p->client_timeout = 20;
2922         p2p->num_p2p_sd_queries = 0;
2923
2924         p2p_dbg(p2p, "initialized");
2925         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2926         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2927
2928         return p2p;
2929 }
2930
2931
2932 void p2p_deinit(struct p2p_data *p2p)
2933 {
2934 #ifdef CONFIG_WIFI_DISPLAY
2935         wpabuf_free(p2p->wfd_ie_beacon);
2936         wpabuf_free(p2p->wfd_ie_probe_req);
2937         wpabuf_free(p2p->wfd_ie_probe_resp);
2938         wpabuf_free(p2p->wfd_ie_assoc_req);
2939         wpabuf_free(p2p->wfd_ie_invitation);
2940         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2941         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2942         wpabuf_free(p2p->wfd_ie_go_neg);
2943         wpabuf_free(p2p->wfd_dev_info);
2944         wpabuf_free(p2p->wfd_assoc_bssid);
2945         wpabuf_free(p2p->wfd_coupled_sink_info);
2946 #endif /* CONFIG_WIFI_DISPLAY */
2947
2948         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2949         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2950         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2951         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2952         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2953         p2p_flush(p2p);
2954         p2p_free_req_dev_types(p2p);
2955         os_free(p2p->cfg->dev_name);
2956         os_free(p2p->cfg->manufacturer);
2957         os_free(p2p->cfg->model_name);
2958         os_free(p2p->cfg->model_number);
2959         os_free(p2p->cfg->serial_number);
2960         os_free(p2p->cfg->pref_chan);
2961         os_free(p2p->groups);
2962         os_free(p2p->p2ps_prov);
2963         wpabuf_free(p2p->sd_resp);
2964         os_free(p2p->after_scan_tx);
2965         p2p_remove_wps_vendor_extensions(p2p);
2966         os_free(p2p->no_go_freq.range);
2967         p2p_service_flush_asp(p2p);
2968
2969         os_free(p2p);
2970 }
2971
2972
2973 void p2p_flush(struct p2p_data *p2p)
2974 {
2975         struct p2p_device *dev, *prev;
2976         p2p_stop_find(p2p);
2977         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2978                               list) {
2979                 dl_list_del(&dev->list);
2980                 p2p_device_free(p2p, dev);
2981         }
2982         p2p_free_sd_queries(p2p);
2983         os_free(p2p->after_scan_tx);
2984         p2p->after_scan_tx = NULL;
2985 }
2986
2987
2988 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2989 {
2990         struct p2p_device *dev;
2991
2992         dev = p2p_get_device(p2p, addr);
2993         if (dev == NULL)
2994                 return -1;
2995
2996         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2997
2998         if (p2p->go_neg_peer == dev) {
2999                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
3000                 p2p->go_neg_peer = NULL;
3001         }
3002
3003         dev->wps_method = WPS_NOT_READY;
3004         dev->oob_pw_id = 0;
3005         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
3006         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
3007
3008         /* Check if after_scan_tx is for this peer. If so free it */
3009         if (p2p->after_scan_tx &&
3010             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
3011                 os_free(p2p->after_scan_tx);
3012                 p2p->after_scan_tx = NULL;
3013         }
3014
3015         return 0;
3016 }
3017
3018
3019 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
3020 {
3021         os_free(p2p->cfg->dev_name);
3022         if (dev_name) {
3023                 p2p->cfg->dev_name = os_strdup(dev_name);
3024                 if (p2p->cfg->dev_name == NULL)
3025                         return -1;
3026         } else
3027                 p2p->cfg->dev_name = NULL;
3028         return 0;
3029 }
3030
3031
3032 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
3033 {
3034         os_free(p2p->cfg->manufacturer);
3035         p2p->cfg->manufacturer = NULL;
3036         if (manufacturer) {
3037                 p2p->cfg->manufacturer = os_strdup(manufacturer);
3038                 if (p2p->cfg->manufacturer == NULL)
3039                         return -1;
3040         }
3041
3042         return 0;
3043 }
3044
3045
3046 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
3047 {
3048         os_free(p2p->cfg->model_name);
3049         p2p->cfg->model_name = NULL;
3050         if (model_name) {
3051                 p2p->cfg->model_name = os_strdup(model_name);
3052                 if (p2p->cfg->model_name == NULL)
3053                         return -1;
3054         }
3055
3056         return 0;
3057 }
3058
3059
3060 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
3061 {
3062         os_free(p2p->cfg->model_number);
3063         p2p->cfg->model_number = NULL;
3064         if (model_number) {
3065                 p2p->cfg->model_number = os_strdup(model_number);
3066                 if (p2p->cfg->model_number == NULL)
3067                         return -1;
3068         }
3069
3070         return 0;
3071 }
3072
3073
3074 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
3075 {
3076         os_free(p2p->cfg->serial_number);
3077         p2p->cfg->serial_number = NULL;
3078         if (serial_number) {
3079                 p2p->cfg->serial_number = os_strdup(serial_number);
3080                 if (p2p->cfg->serial_number == NULL)
3081                         return -1;
3082         }
3083
3084         return 0;
3085 }
3086
3087
3088 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
3089 {
3090         p2p->cfg->config_methods = config_methods;
3091 }
3092
3093
3094 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
3095 {
3096         os_memcpy(p2p->cfg->uuid, uuid, 16);
3097 }
3098
3099
3100 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
3101 {
3102         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
3103         return 0;
3104 }
3105
3106
3107 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
3108                           size_t num_dev_types)
3109 {
3110         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
3111                 num_dev_types = P2P_SEC_DEVICE_TYPES;
3112         p2p->cfg->num_sec_dev_types = num_dev_types;
3113         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
3114         return 0;
3115 }
3116
3117
3118 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
3119 {
3120         int i;
3121
3122         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3123                 wpabuf_free(p2p->wps_vendor_ext[i]);
3124                 p2p->wps_vendor_ext[i] = NULL;
3125         }
3126 }
3127
3128
3129 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
3130                                  const struct wpabuf *vendor_ext)
3131 {
3132         int i;
3133
3134         if (vendor_ext == NULL)
3135                 return -1;
3136
3137         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
3138                 if (p2p->wps_vendor_ext[i] == NULL)
3139                         break;
3140         }
3141         if (i >= P2P_MAX_WPS_VENDOR_EXT)
3142                 return -1;
3143
3144         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
3145         if (p2p->wps_vendor_ext[i] == NULL)
3146                 return -1;
3147
3148         return 0;
3149 }
3150
3151
3152 int p2p_set_country(struct p2p_data *p2p, const char *country)
3153 {
3154         os_memcpy(p2p->cfg->country, country, 3);
3155         return 0;
3156 }
3157
3158
3159 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
3160 {
3161         if (dev->sd_pending_bcast_queries == 0) {
3162                 /* Initialize with total number of registered broadcast
3163                  * SD queries. */
3164                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
3165         }
3166
3167         if (p2p_start_sd(p2p, dev) == 0)
3168                 return 1;
3169
3170         if (dev->req_config_methods &&
3171             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
3172                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3173                         MACSTR " (config methods 0x%x)",
3174                         MAC2STR(dev->info.p2p_device_addr),
3175                         dev->req_config_methods);
3176                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3177                         return 1;
3178         }
3179
3180         return 0;
3181 }
3182
3183
3184 void p2p_continue_find(struct p2p_data *p2p)
3185 {
3186         struct p2p_device *dev;
3187         int found;
3188
3189         p2p_set_state(p2p, P2P_SEARCH);
3190
3191         /* Continue from the device following the last iteration */
3192         found = 0;
3193         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3194                 if (dev == p2p->last_p2p_find_oper) {
3195                         found = 1;
3196                         continue;
3197                 }
3198                 if (!found)
3199                         continue;
3200                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3201                         p2p->last_p2p_find_oper = dev;
3202                         return;
3203                 }
3204         }
3205
3206         /*
3207          * Wrap around to the beginning of the list and continue until the last
3208          * iteration device.
3209          */
3210         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3211                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3212                         p2p->last_p2p_find_oper = dev;
3213                         return;
3214                 }
3215                 if (dev == p2p->last_p2p_find_oper)
3216                         break;
3217         }
3218
3219         p2p_listen_in_find(p2p, 1);
3220 }
3221
3222
3223 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3224 {
3225         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3226                 success);
3227         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3228
3229         if (!success) {
3230                 if (p2p->sd_peer)
3231                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3232                 p2p->sd_peer = NULL;
3233                 if (p2p->state != P2P_IDLE)
3234                         p2p_continue_find(p2p);
3235                 return;
3236         }
3237
3238         if (p2p->sd_peer == NULL) {
3239                 p2p_dbg(p2p, "No SD peer entry known");
3240                 if (p2p->state != P2P_IDLE)
3241                         p2p_continue_find(p2p);
3242                 return;
3243         }
3244
3245         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3246                 /* Update the pending broadcast SD query count for this device
3247                  */
3248                 p2p->sd_peer->sd_pending_bcast_queries--;
3249
3250                 /*
3251                  * If there are no pending broadcast queries for this device,
3252                  * mark it as done (-1).
3253                  */
3254                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3255                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3256         }
3257
3258         /* Wait for response from the peer */
3259         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3260         p2p_set_timeout(p2p, 0, 200000);
3261 }
3262
3263
3264 /**
3265  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3266  * @p2p: P2P module context from p2p_init()
3267  */
3268 static void p2p_retry_pd(struct p2p_data *p2p)
3269 {
3270         struct p2p_device *dev;
3271
3272         /*
3273          * Retry the prov disc req attempt only for the peer that the user had
3274          * requested.
3275          */
3276
3277         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3278                 if (os_memcmp(p2p->pending_pd_devaddr,
3279                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3280                         continue;
3281                 if (!dev->req_config_methods)
3282                         continue;
3283
3284                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3285                         MACSTR " (config methods 0x%x)",
3286                         MAC2STR(dev->info.p2p_device_addr),
3287                         dev->req_config_methods);
3288                 p2p_send_prov_disc_req(p2p, dev,
3289                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3290                                        p2p->pd_force_freq);
3291                 return;
3292         }
3293 }
3294
3295
3296 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3297 {
3298         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3299                 success);
3300
3301         /*
3302          * Postpone resetting the pending action state till after we actually
3303          * time out. This allows us to take some action like notifying any
3304          * interested parties about no response to the request.
3305          *
3306          * When the timer (below) goes off we check in IDLE, SEARCH, or
3307          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3308          * requests in, if this was still pending and then raise notification.
3309          */
3310
3311         if (!success) {
3312                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3313
3314                 if (p2p->user_initiated_pd &&
3315                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3316                 {
3317                         /* Retry request from timeout to avoid busy loops */
3318                         p2p->pending_action_state = P2P_PENDING_PD;
3319                         p2p_set_timeout(p2p, 0, 50000);
3320                 } else if (p2p->state != P2P_IDLE)
3321                         p2p_continue_find(p2p);
3322                 else if (p2p->user_initiated_pd) {
3323                         p2p->pending_action_state = P2P_PENDING_PD;
3324                         p2p_set_timeout(p2p, 0, 300000);
3325                 }
3326                 return;
3327         }
3328
3329         /*
3330          * This postponing, of resetting pending_action_state, needs to be
3331          * done only for user initiated PD requests and not internal ones.
3332          */
3333         if (p2p->user_initiated_pd)
3334                 p2p->pending_action_state = P2P_PENDING_PD;
3335         else
3336                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3337
3338         /* Wait for response from the peer */
3339         if (p2p->state == P2P_SEARCH)
3340                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3341         p2p_set_timeout(p2p, 0, 200000);
3342 }
3343
3344
3345 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p)
3346 {
3347         if (p2p->after_scan_tx_in_progress) {
3348                 p2p->after_scan_tx_in_progress = 0;
3349                 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3350                     p2p_run_after_scan(p2p))
3351                         return 1;
3352                 if (p2p->state == P2P_SEARCH) {
3353                         p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3354                         p2p_continue_find(p2p);
3355                 }
3356         }
3357
3358         return 0;
3359 }
3360
3361
3362 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success)
3363 {
3364         p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d",
3365                 success);
3366
3367         if (p2p->send_action_in_progress) {
3368                 p2p->send_action_in_progress = 0;
3369                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3370         }
3371
3372         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3373
3374         if (!success)
3375                 goto continue_search;
3376
3377         if (!p2p->cfg->prov_disc_resp_cb ||
3378             p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1)
3379                 goto continue_search;
3380
3381         p2p_dbg(p2p,
3382                 "Post-Provision Discovery operations started - do not try to continue other P2P operations");
3383         return;
3384
3385 continue_search:
3386         p2p_check_after_scan_tx_continuation(p2p);
3387 }
3388
3389
3390 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3391                          struct os_reltime *rx_time, int level, const u8 *ies,
3392                          size_t ies_len)
3393 {
3394         if (os_reltime_before(rx_time, &p2p->find_start)) {
3395                 /*
3396                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3397                  * scan results for relatively long time. To avoid reporting
3398                  * stale information, update P2P peers only based on results
3399                  * that have based on frames received after the last p2p_find
3400                  * operation was started.
3401                  */
3402                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3403                         " (rx_time=%u.%06u)",
3404                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3405                         (unsigned int) rx_time->usec);
3406                 return 0;
3407         }
3408
3409         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3410
3411         return 0;
3412 }
3413
3414
3415 void p2p_scan_res_handled(struct p2p_data *p2p)
3416 {
3417         if (!p2p->p2p_scan_running) {
3418                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3419         }
3420         p2p->p2p_scan_running = 0;
3421         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3422
3423         if (p2p_run_after_scan(p2p))
3424                 return;
3425         if (p2p->state == P2P_SEARCH)
3426                 p2p_continue_find(p2p);
3427 }
3428
3429
3430 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3431 {
3432         u8 dev_capab;
3433         u8 *len;
3434
3435 #ifdef CONFIG_WIFI_DISPLAY
3436         if (p2p->wfd_ie_probe_req)
3437                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3438 #endif /* CONFIG_WIFI_DISPLAY */
3439
3440         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3441                 wpabuf_put_buf(ies,
3442                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3443
3444         len = p2p_buf_add_ie_hdr(ies);
3445
3446         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3447
3448         /* P2PS requires Probe Request frames to include SD bit */
3449         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3450                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3451
3452         p2p_buf_add_capability(ies, dev_capab, 0);
3453
3454         if (dev_id)
3455                 p2p_buf_add_device_id(ies, dev_id);
3456         if (p2p->cfg->reg_class && p2p->cfg->channel)
3457                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3458                                            p2p->cfg->reg_class,
3459                                            p2p->cfg->channel);
3460         if (p2p->ext_listen_interval)
3461                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3462                                               p2p->ext_listen_interval);
3463
3464         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3465                 p2p_buf_add_service_hash(ies, p2p);
3466
3467         /* TODO: p2p_buf_add_operating_channel() if GO */
3468         p2p_buf_update_ie_hdr(ies, len);
3469 }
3470
3471
3472 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3473 {
3474         size_t len = 100;
3475
3476 #ifdef CONFIG_WIFI_DISPLAY
3477         if (p2p && p2p->wfd_ie_probe_req)
3478                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3479 #endif /* CONFIG_WIFI_DISPLAY */
3480
3481         if (p2p && p2p->vendor_elem &&
3482             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3483                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3484
3485         return len;
3486 }
3487
3488
3489 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3490 {
3491         return p2p_attr_text(p2p_ie, buf, end);
3492 }
3493
3494
3495 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3496 {
3497         struct p2p_device *dev = p2p->go_neg_peer;
3498         int timeout;
3499
3500         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3501
3502         if (dev == NULL) {
3503                 p2p_dbg(p2p, "No pending GO Negotiation");
3504                 return;
3505         }
3506
3507         if (success) {
3508                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3509                         p2p_set_state(p2p, P2P_IDLE);
3510                         return;
3511                 }
3512         } else if (dev->go_neg_req_sent) {
3513                 /* Cancel the increment from p2p_connect_send() on failure */
3514                 dev->go_neg_req_sent--;
3515         }
3516
3517         if (!success &&
3518             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3519             !is_zero_ether_addr(dev->member_in_go_dev)) {
3520                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3521                         MAC2STR(dev->info.p2p_device_addr));
3522                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3523                 p2p_send_dev_disc_req(p2p, dev);
3524                 return;
3525         }
3526
3527         /*
3528          * Use P2P find, if needed, to find the other device from its listen
3529          * channel.
3530          */
3531         p2p_set_state(p2p, P2P_CONNECT);
3532         timeout = success ? 500000 : 100000;
3533         if (!success && p2p->go_neg_peer &&
3534             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3535                 unsigned int r;
3536                 /*
3537                  * Peer is expected to wait our response and we will skip the
3538                  * listen phase. Add some randomness to the wait time here to
3539                  * make it less likely to hit cases where we could end up in
3540                  * sync with peer not listening.
3541                  */
3542                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3543                         r = 0;
3544                 timeout += r % 100000;
3545         }
3546         p2p_set_timeout(p2p, 0, timeout);
3547 }
3548
3549
3550 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3551 {
3552         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3553                 success);
3554         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3555                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3556                 return;
3557         }
3558         p2p_set_state(p2p, P2P_CONNECT);
3559         p2p_set_timeout(p2p, 0, 500000);
3560 }
3561
3562
3563 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3564                                        const u8 *addr)
3565 {
3566         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3567         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3568                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3569                 return;
3570         }
3571
3572         if (success) {
3573                 struct p2p_device *dev;
3574                 dev = p2p_get_device(p2p, addr);
3575                 if (dev &&
3576                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3577                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3578         }
3579
3580         if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND)
3581                 p2p_continue_find(p2p);
3582 }
3583
3584
3585 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3586                                enum p2p_send_action_result result)
3587 {
3588         struct p2p_device *dev;
3589
3590         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3591         if (result == P2P_SEND_ACTION_FAILED) {
3592                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3593                 p2p_go_neg_failed(p2p, -1);
3594                 return;
3595         }
3596
3597         dev = p2p->go_neg_peer;
3598
3599         if (result == P2P_SEND_ACTION_NO_ACK) {
3600                 /*
3601                  * Retry GO Negotiation Confirmation
3602                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3603                  * ACK for confirmation.
3604                  */
3605                 if (dev && dev->go_neg_conf &&
3606                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3607                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3608                                 dev->go_neg_conf_sent);
3609                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3610                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3611                                             dev->info.p2p_device_addr,
3612                                             p2p->cfg->dev_addr,
3613                                             dev->info.p2p_device_addr,
3614                                             wpabuf_head(dev->go_neg_conf),
3615                                             wpabuf_len(dev->go_neg_conf), 0) >=
3616                             0) {
3617                                 dev->go_neg_conf_sent++;
3618                                 return;
3619                         }
3620                         p2p_dbg(p2p, "Failed to re-send Action frame");
3621
3622                         /*
3623                          * Continue with the assumption that the first attempt
3624                          * went through and just the ACK frame was lost.
3625                          */
3626                 }
3627
3628                 /*
3629                  * It looks like the TX status for GO Negotiation Confirm is
3630                  * often showing failure even when the peer has actually
3631                  * received the frame. Since the peer may change channels
3632                  * immediately after having received the frame, we may not see
3633                  * an Ack for retries, so just dropping a single frame may
3634                  * trigger this. To allow the group formation to succeed if the
3635                  * peer did indeed receive the frame, continue regardless of
3636                  * the TX status.
3637                  */
3638                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3639         }
3640
3641         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3642
3643         if (dev == NULL)
3644                 return;
3645
3646         p2p_go_complete(p2p, dev);
3647 }
3648
3649
3650 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3651                         const u8 *src, const u8 *bssid,
3652                         enum p2p_send_action_result result)
3653 {
3654         enum p2p_pending_action_state state;
3655         int success;
3656
3657         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3658                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3659                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3660                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3661         success = result == P2P_SEND_ACTION_SUCCESS;
3662         state = p2p->pending_action_state;
3663         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3664         switch (state) {
3665         case P2P_NO_PENDING_ACTION:
3666                 if (p2p->send_action_in_progress) {
3667                         p2p->send_action_in_progress = 0;
3668                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3669                 }
3670                 p2p_check_after_scan_tx_continuation(p2p);
3671                 break;
3672         case P2P_PENDING_GO_NEG_REQUEST:
3673                 p2p_go_neg_req_cb(p2p, success);
3674                 break;
3675         case P2P_PENDING_GO_NEG_RESPONSE:
3676                 p2p_go_neg_resp_cb(p2p, success);
3677                 break;
3678         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3679                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3680                 break;
3681         case P2P_PENDING_GO_NEG_CONFIRM:
3682                 p2p_go_neg_conf_cb(p2p, result);
3683                 break;
3684         case P2P_PENDING_SD:
3685                 p2p_sd_cb(p2p, success);
3686                 break;
3687         case P2P_PENDING_PD:
3688                 p2p_prov_disc_cb(p2p, success);
3689                 break;
3690         case P2P_PENDING_PD_RESPONSE:
3691                 p2p_prov_disc_resp_cb(p2p, success);
3692                 break;
3693         case P2P_PENDING_INVITATION_REQUEST:
3694                 p2p_invitation_req_cb(p2p, success);
3695                 break;
3696         case P2P_PENDING_INVITATION_RESPONSE:
3697                 p2p_invitation_resp_cb(p2p, success);
3698                 break;
3699         case P2P_PENDING_DEV_DISC_REQUEST:
3700                 p2p_dev_disc_req_cb(p2p, success);
3701                 break;
3702         case P2P_PENDING_DEV_DISC_RESPONSE:
3703                 p2p_dev_disc_resp_cb(p2p, success);
3704                 break;
3705         case P2P_PENDING_GO_DISC_REQ:
3706                 p2p_go_disc_req_cb(p2p, success);
3707                 break;
3708         }
3709
3710         p2p->after_scan_tx_in_progress = 0;
3711 }
3712
3713
3714 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3715                    unsigned int duration)
3716 {
3717         if (freq == p2p->pending_client_disc_freq) {
3718                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3719                 p2p->pending_client_disc_freq = 0;
3720                 return;
3721         }
3722
3723         if (freq != p2p->pending_listen_freq) {
3724                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3725                         freq, duration, p2p->pending_listen_freq);
3726                 return;
3727         }
3728
3729         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3730                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3731                 p2p->pending_listen_freq);
3732         p2p->in_listen = 1;
3733         p2p->drv_in_listen = freq;
3734         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3735                 /*
3736                  * Add 20 msec extra wait to avoid race condition with driver
3737                  * remain-on-channel end event, i.e., give driver more time to
3738                  * complete the operation before our timeout expires.
3739                  */
3740                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3741                                 p2p->pending_listen_usec + 20000);
3742         }
3743
3744         p2p->pending_listen_freq = 0;
3745 }
3746
3747
3748 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3749 {
3750         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3751         p2p->drv_in_listen = 0;
3752         if (p2p->in_listen)
3753                 return 0; /* Internal timeout will trigger the next step */
3754
3755         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3756                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3757                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3758                         p2p_go_neg_failed(p2p, -1);
3759                         return 0;
3760                 }
3761
3762                 p2p_set_state(p2p, P2P_CONNECT);
3763                 p2p_connect_send(p2p, p2p->go_neg_peer);
3764                 return 1;
3765         } else if (p2p->state == P2P_SEARCH) {
3766                 if (p2p->p2p_scan_running) {
3767                          /*
3768                           * Search is already in progress. This can happen if
3769                           * an Action frame RX is reported immediately after
3770                           * the end of a remain-on-channel operation and the
3771                           * response frame to that is sent using an offchannel
3772                           * operation while in p2p_find. Avoid an attempt to
3773                           * restart a scan here.
3774                           */
3775                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3776                         return 1;
3777                 }
3778                 if (p2p->pending_listen_freq) {
3779                         /*
3780                          * Better wait a bit if the driver is unable to start
3781                          * offchannel operation for some reason. p2p_search()
3782                          * will be started from internal timeout.
3783                          */
3784                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3785                         p2p_set_timeout(p2p, 0, 100000);
3786                         return 1;
3787                 }
3788                 if (p2p->search_delay) {
3789                         p2p_dbg(p2p, "Delay search operation by %u ms",
3790                                 p2p->search_delay);
3791                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3792                                         (p2p->search_delay % 1000) * 1000);
3793                         return 1;
3794                 }
3795                 p2p_search(p2p);
3796                 return 1;
3797         }
3798
3799         return 0;
3800 }
3801
3802
3803 static void p2p_timeout_connect(struct p2p_data *p2p)
3804 {
3805         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3806         if (p2p->go_neg_peer &&
3807             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3808                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3809                 p2p_go_neg_failed(p2p, -1);
3810                 return;
3811         }
3812         if (p2p->go_neg_peer &&
3813             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3814             p2p->go_neg_peer->connect_reqs < 120) {
3815                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3816                 p2p_connect_send(p2p, p2p->go_neg_peer);
3817                 return;
3818         }
3819         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3820                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3821                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3822                 p2p_set_timeout(p2p, 0, 30000);
3823                 return;
3824         }
3825         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3826         p2p_listen_in_find(p2p, 0);
3827 }
3828
3829
3830 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3831 {
3832         if (p2p->go_neg_peer) {
3833                 if (p2p->drv_in_listen) {
3834                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3835                         return;
3836                 }
3837
3838                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3839                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3840                         p2p_go_neg_failed(p2p, -1);
3841                         return;
3842                 }
3843
3844                 p2p_set_state(p2p, P2P_CONNECT);
3845                 p2p_connect_send(p2p, p2p->go_neg_peer);
3846         } else
3847                 p2p_set_state(p2p, P2P_IDLE);
3848 }
3849
3850
3851 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3852 {
3853         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3854
3855         if (p2p->cfg->is_concurrent_session_active &&
3856             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3857                 p2p_set_timeout(p2p, 0, 500000);
3858         else
3859                 p2p_set_timeout(p2p, 0, 200000);
3860 }
3861
3862
3863 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3864 {
3865         struct p2p_device *dev = p2p->go_neg_peer;
3866
3867         if (dev == NULL) {
3868                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3869                 return;
3870         }
3871
3872         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3873         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3874         p2p_listen_in_find(p2p, 0);
3875 }
3876
3877
3878 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3879 {
3880         p2p_dbg(p2p, "Service Discovery Query timeout");
3881         if (p2p->sd_peer) {
3882                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3883                 p2p->sd_peer = NULL;
3884         }
3885         p2p_continue_find(p2p);
3886 }
3887
3888
3889 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3890 {
3891         p2p_dbg(p2p, "Provision Discovery Request timeout");
3892         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3893         p2p_continue_find(p2p);
3894 }
3895
3896
3897 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3898 {
3899         u32 adv_id = 0;
3900         u8 *adv_mac = NULL;
3901
3902         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3903
3904         /*
3905          * For user initiated PD requests that we have not gotten any responses
3906          * for while in IDLE state, we retry them a couple of times before
3907          * giving up.
3908          */
3909         if (!p2p->user_initiated_pd)
3910                 return;
3911
3912         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3913
3914         if (p2p->pd_retries) {
3915                 p2p->pd_retries--;
3916                 p2p_retry_pd(p2p);
3917         } else {
3918                 struct p2p_device *dev;
3919                 int for_join = 0;
3920
3921                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3922                         if (os_memcmp(p2p->pending_pd_devaddr,
3923                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3924                                 continue;
3925                         if (dev->req_config_methods &&
3926                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3927                                 for_join = 1;
3928                 }
3929
3930                 if (p2p->p2ps_prov) {
3931                         adv_id = p2p->p2ps_prov->adv_id;
3932                         adv_mac = p2p->p2ps_prov->adv_mac;
3933                 }
3934
3935                 if (p2p->cfg->prov_disc_fail)
3936                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3937                                                  p2p->pending_pd_devaddr,
3938                                                  for_join ?
3939                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3940                                                  P2P_PROV_DISC_TIMEOUT,
3941                                                  adv_id, adv_mac, NULL);
3942                 p2p_reset_pending_pd(p2p);
3943         }
3944 }
3945
3946
3947 static void p2p_timeout_invite(struct p2p_data *p2p)
3948 {
3949         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3950         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3951         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3952                 /*
3953                  * Better remain on operating channel instead of listen channel
3954                  * when running a group.
3955                  */
3956                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3957                 p2p_set_timeout(p2p, 0, 100000);
3958                 return;
3959         }
3960         p2p_listen_in_find(p2p, 0);
3961 }
3962
3963
3964 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3965 {
3966         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3967                 p2p_set_state(p2p, P2P_INVITE);
3968                 p2p_invite_send(p2p, p2p->invite_peer,
3969                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3970         } else {
3971                 if (p2p->invite_peer) {
3972                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3973                         if (p2p->cfg->invitation_result)
3974                                 p2p->cfg->invitation_result(
3975                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3976                                         p2p->invite_peer->info.p2p_device_addr,
3977                                         0, 0);
3978                 }
3979                 p2p_set_state(p2p, P2P_IDLE);
3980         }
3981 }
3982
3983
3984 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3985 {
3986         struct p2p_data *p2p = eloop_ctx;
3987
3988         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3989
3990         p2p->in_listen = 0;
3991         if (p2p->drv_in_listen) {
3992                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3993                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3994         }
3995
3996         switch (p2p->state) {
3997         case P2P_IDLE:
3998                 /* Check if we timed out waiting for PD req */
3999                 if (p2p->pending_action_state == P2P_PENDING_PD)
4000                         p2p_timeout_prov_disc_req(p2p);
4001                 break;
4002         case P2P_SEARCH:
4003                 /* Check if we timed out waiting for PD req */
4004                 if (p2p->pending_action_state == P2P_PENDING_PD)
4005                         p2p_timeout_prov_disc_req(p2p);
4006                 if (p2p->search_delay && !p2p->in_search_delay) {
4007                         p2p_dbg(p2p, "Delay search operation by %u ms",
4008                                 p2p->search_delay);
4009                         p2p->in_search_delay = 1;
4010                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
4011                                         (p2p->search_delay % 1000) * 1000);
4012                         break;
4013                 }
4014                 p2p->in_search_delay = 0;
4015                 p2p_search(p2p);
4016                 break;
4017         case P2P_CONNECT:
4018                 p2p_timeout_connect(p2p);
4019                 break;
4020         case P2P_CONNECT_LISTEN:
4021                 p2p_timeout_connect_listen(p2p);
4022                 break;
4023         case P2P_GO_NEG:
4024                 break;
4025         case P2P_LISTEN_ONLY:
4026                 /* Check if we timed out waiting for PD req */
4027                 if (p2p->pending_action_state == P2P_PENDING_PD)
4028                         p2p_timeout_prov_disc_req(p2p);
4029
4030                 if (p2p->ext_listen_only) {
4031                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
4032                         p2p->ext_listen_only = 0;
4033                         p2p_set_state(p2p, P2P_IDLE);
4034                 }
4035                 break;
4036         case P2P_WAIT_PEER_CONNECT:
4037                 p2p_timeout_wait_peer_connect(p2p);
4038                 break;
4039         case P2P_WAIT_PEER_IDLE:
4040                 p2p_timeout_wait_peer_idle(p2p);
4041                 break;
4042         case P2P_SD_DURING_FIND:
4043                 p2p_timeout_sd_during_find(p2p);
4044                 break;
4045         case P2P_PROVISIONING:
4046                 break;
4047         case P2P_PD_DURING_FIND:
4048                 p2p_timeout_prov_disc_during_find(p2p);
4049                 break;
4050         case P2P_INVITE:
4051                 p2p_timeout_invite(p2p);
4052                 break;
4053         case P2P_INVITE_LISTEN:
4054                 p2p_timeout_invite_listen(p2p);
4055                 break;
4056         }
4057 }
4058
4059
4060 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
4061 {
4062         struct p2p_device *dev;
4063
4064         dev = p2p_get_device(p2p, peer_addr);
4065         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
4066                 MACSTR, MAC2STR(peer_addr));
4067         if (dev == NULL) {
4068                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
4069                 return -1;
4070         }
4071         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
4072         dev->flags |= P2P_DEV_USER_REJECTED;
4073         return 0;
4074 }
4075
4076
4077 const char * p2p_wps_method_text(enum p2p_wps_method method)
4078 {
4079         switch (method) {
4080         case WPS_NOT_READY:
4081                 return "not-ready";
4082         case WPS_PIN_DISPLAY:
4083                 return "Display";
4084         case WPS_PIN_KEYPAD:
4085                 return "Keypad";
4086         case WPS_PBC:
4087                 return "PBC";
4088         case WPS_NFC:
4089                 return "NFC";
4090         case WPS_P2PS:
4091                 return "P2PS";
4092         }
4093
4094         return "??";
4095 }
4096
4097
4098 static const char * p2p_go_state_text(enum p2p_go_state go_state)
4099 {
4100         switch (go_state) {
4101         case UNKNOWN_GO:
4102                 return "unknown";
4103         case LOCAL_GO:
4104                 return "local";
4105         case  REMOTE_GO:
4106                 return "remote";
4107         }
4108
4109         return "??";
4110 }
4111
4112
4113 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
4114                                                const u8 *addr, int next)
4115 {
4116         struct p2p_device *dev;
4117
4118         if (addr)
4119                 dev = p2p_get_device(p2p, addr);
4120         else
4121                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4122
4123         if (dev && next) {
4124                 dev = dl_list_first(&dev->list, struct p2p_device, list);
4125                 if (&dev->list == &p2p->devices)
4126                         dev = NULL;
4127         }
4128
4129         if (dev == NULL)
4130                 return NULL;
4131
4132         return &dev->info;
4133 }
4134
4135
4136 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
4137                           char *buf, size_t buflen)
4138 {
4139         struct p2p_device *dev;
4140         int res;
4141         char *pos, *end;
4142         struct os_reltime now;
4143
4144         if (info == NULL)
4145                 return -1;
4146
4147         dev = (struct p2p_device *) (((u8 *) info) -
4148                                      offsetof(struct p2p_device, info));
4149
4150         pos = buf;
4151         end = buf + buflen;
4152
4153         os_get_reltime(&now);
4154         res = os_snprintf(pos, end - pos,
4155                           "age=%d\n"
4156                           "listen_freq=%d\n"
4157                           "wps_method=%s\n"
4158                           "interface_addr=" MACSTR "\n"
4159                           "member_in_go_dev=" MACSTR "\n"
4160                           "member_in_go_iface=" MACSTR "\n"
4161                           "go_neg_req_sent=%d\n"
4162                           "go_state=%s\n"
4163                           "dialog_token=%u\n"
4164                           "intended_addr=" MACSTR "\n"
4165                           "country=%c%c\n"
4166                           "oper_freq=%d\n"
4167                           "req_config_methods=0x%x\n"
4168                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
4169                           "status=%d\n"
4170                           "invitation_reqs=%u\n",
4171                           (int) (now.sec - dev->last_seen.sec),
4172                           dev->listen_freq,
4173                           p2p_wps_method_text(dev->wps_method),
4174                           MAC2STR(dev->interface_addr),
4175                           MAC2STR(dev->member_in_go_dev),
4176                           MAC2STR(dev->member_in_go_iface),
4177                           dev->go_neg_req_sent,
4178                           p2p_go_state_text(dev->go_state),
4179                           dev->dialog_token,
4180                           MAC2STR(dev->intended_addr),
4181                           dev->country[0] ? dev->country[0] : '_',
4182                           dev->country[1] ? dev->country[1] : '_',
4183                           dev->oper_freq,
4184                           dev->req_config_methods,
4185                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
4186                           "[PROBE_REQ_ONLY]" : "",
4187                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
4188                           dev->flags & P2P_DEV_NOT_YET_READY ?
4189                           "[NOT_YET_READY]" : "",
4190                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
4191                           "[PD_PEER_DISPLAY]" : "",
4192                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
4193                           "[PD_PEER_KEYPAD]" : "",
4194                           dev->flags & P2P_DEV_PD_PEER_P2PS ?
4195                           "[PD_PEER_P2PS]" : "",
4196                           dev->flags & P2P_DEV_USER_REJECTED ?
4197                           "[USER_REJECTED]" : "",
4198                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
4199                           "[PEER_WAITING_RESPONSE]" : "",
4200                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
4201                           "[PREFER_PERSISTENT_GROUP]" : "",
4202                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
4203                           "[WAIT_GO_NEG_RESPONSE]" : "",
4204                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
4205                           "[WAIT_GO_NEG_CONFIRM]" : "",
4206                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
4207                           "[GROUP_CLIENT_ONLY]" : "",
4208                           dev->flags & P2P_DEV_FORCE_FREQ ?
4209                           "[FORCE_FREQ]" : "",
4210                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
4211                           "[PD_FOR_JOIN]" : "",
4212                           dev->status,
4213                           dev->invitation_reqs);
4214         if (os_snprintf_error(end - pos, res))
4215                 return pos - buf;
4216         pos += res;
4217
4218         if (dev->ext_listen_period) {
4219                 res = os_snprintf(pos, end - pos,
4220                                   "ext_listen_period=%u\n"
4221                                   "ext_listen_interval=%u\n",
4222                                   dev->ext_listen_period,
4223                                   dev->ext_listen_interval);
4224                 if (os_snprintf_error(end - pos, res))
4225                         return pos - buf;
4226                 pos += res;
4227         }
4228
4229         if (dev->oper_ssid_len) {
4230                 res = os_snprintf(pos, end - pos,
4231                                   "oper_ssid=%s\n",
4232                                   wpa_ssid_txt(dev->oper_ssid,
4233                                                dev->oper_ssid_len));
4234                 if (os_snprintf_error(end - pos, res))
4235                         return pos - buf;
4236                 pos += res;
4237         }
4238
4239 #ifdef CONFIG_WIFI_DISPLAY
4240         if (dev->info.wfd_subelems) {
4241                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4242                 if (os_snprintf_error(end - pos, res))
4243                         return pos - buf;
4244                 pos += res;
4245
4246                 pos += wpa_snprintf_hex(pos, end - pos,
4247                                         wpabuf_head(dev->info.wfd_subelems),
4248                                         wpabuf_len(dev->info.wfd_subelems));
4249
4250                 res = os_snprintf(pos, end - pos, "\n");
4251                 if (os_snprintf_error(end - pos, res))
4252                         return pos - buf;
4253                 pos += res;
4254         }
4255 #endif /* CONFIG_WIFI_DISPLAY */
4256
4257         return pos - buf;
4258 }
4259
4260
4261 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4262 {
4263         return p2p_get_device(p2p, addr) != NULL;
4264 }
4265
4266
4267 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4268 {
4269         if (enabled) {
4270                 p2p_dbg(p2p, "Client discoverability enabled");
4271                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4272         } else {
4273                 p2p_dbg(p2p, "Client discoverability disabled");
4274                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4275         }
4276 }
4277
4278
4279 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4280                                               u32 duration2, u32 interval2)
4281 {
4282         struct wpabuf *req;
4283         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4284         u8 *len;
4285
4286         req = wpabuf_alloc(100);
4287         if (req == NULL)
4288                 return NULL;
4289
4290         if (duration1 || interval1) {
4291                 os_memset(&desc1, 0, sizeof(desc1));
4292                 desc1.count_type = 1;
4293                 desc1.duration = duration1;
4294                 desc1.interval = interval1;
4295                 ptr1 = &desc1;
4296
4297                 if (duration2 || interval2) {
4298                         os_memset(&desc2, 0, sizeof(desc2));
4299                         desc2.count_type = 2;
4300                         desc2.duration = duration2;
4301                         desc2.interval = interval2;
4302                         ptr2 = &desc2;
4303                 }
4304         }
4305
4306         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4307         len = p2p_buf_add_ie_hdr(req);
4308         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4309         p2p_buf_update_ie_hdr(req, len);
4310
4311         return req;
4312 }
4313
4314
4315 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4316                      const u8 *own_interface_addr, unsigned int freq,
4317                      u32 duration1, u32 interval1, u32 duration2,
4318                      u32 interval2)
4319 {
4320         struct wpabuf *req;
4321
4322         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4323                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4324                 "dur2=%u int2=%u",
4325                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4326                 freq, duration1, interval1, duration2, interval2);
4327
4328         req = p2p_build_presence_req(duration1, interval1, duration2,
4329                                      interval2);
4330         if (req == NULL)
4331                 return -1;
4332
4333         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4334         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4335                             go_interface_addr,
4336                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4337                 p2p_dbg(p2p, "Failed to send Action frame");
4338         }
4339         wpabuf_free(req);
4340
4341         return 0;
4342 }
4343
4344
4345 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4346                                                size_t noa_len, u8 dialog_token)
4347 {
4348         struct wpabuf *resp;
4349         u8 *len;
4350
4351         resp = wpabuf_alloc(100 + noa_len);
4352         if (resp == NULL)
4353                 return NULL;
4354
4355         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4356         len = p2p_buf_add_ie_hdr(resp);
4357         p2p_buf_add_status(resp, status);
4358         if (noa) {
4359                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4360                 wpabuf_put_le16(resp, noa_len);
4361                 wpabuf_put_data(resp, noa, noa_len);
4362         } else
4363                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4364         p2p_buf_update_ie_hdr(resp, len);
4365
4366         return resp;
4367 }
4368
4369
4370 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4371                                      const u8 *sa, const u8 *data, size_t len,
4372                                      int rx_freq)
4373 {
4374         struct p2p_message msg;
4375         u8 status;
4376         struct wpabuf *resp;
4377         size_t g;
4378         struct p2p_group *group = NULL;
4379         int parsed = 0;
4380         u8 noa[50];
4381         int noa_len;
4382
4383         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4384
4385         for (g = 0; g < p2p->num_groups; g++) {
4386                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4387                               ETH_ALEN) == 0) {
4388                         group = p2p->groups[g];
4389                         break;
4390                 }
4391         }
4392         if (group == NULL) {
4393                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4394                         MACSTR, MAC2STR(da));
4395                 return;
4396         }
4397
4398         if (p2p_parse(data, len, &msg) < 0) {
4399                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4400                 status = P2P_SC_FAIL_INVALID_PARAMS;
4401                 goto fail;
4402         }
4403         parsed = 1;
4404
4405         if (msg.noa == NULL) {
4406                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4407                 status = P2P_SC_FAIL_INVALID_PARAMS;
4408                 goto fail;
4409         }
4410
4411         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4412
4413 fail:
4414         if (p2p->cfg->get_noa)
4415                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4416                                             sizeof(noa));
4417         else
4418                 noa_len = -1;
4419         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4420                                        noa_len > 0 ? noa_len : 0,
4421                                        msg.dialog_token);
4422         if (parsed)
4423                 p2p_parse_free(&msg);
4424         if (resp == NULL)
4425                 return;
4426
4427         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4428         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4429                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4430                 p2p_dbg(p2p, "Failed to send Action frame");
4431         }
4432         wpabuf_free(resp);
4433 }
4434
4435
4436 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4437                                       const u8 *sa, const u8 *data, size_t len)
4438 {
4439         struct p2p_message msg;
4440
4441         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4442
4443         if (p2p_parse(data, len, &msg) < 0) {
4444                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4445                 return;
4446         }
4447
4448         if (msg.status == NULL || msg.noa == NULL) {
4449                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4450                 p2p_parse_free(&msg);
4451                 return;
4452         }
4453
4454         if (p2p->cfg->presence_resp) {
4455                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4456                                         msg.noa, msg.noa_len);
4457         }
4458
4459         if (*msg.status) {
4460                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4461                         *msg.status);
4462                 p2p_parse_free(&msg);
4463                 return;
4464         }
4465
4466         p2p_dbg(p2p, "P2P Presence Request was accepted");
4467         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4468                     msg.noa, msg.noa_len);
4469         /* TODO: process NoA */
4470         p2p_parse_free(&msg);
4471 }
4472
4473
4474 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4475 {
4476         struct p2p_data *p2p = eloop_ctx;
4477
4478         if (p2p->ext_listen_interval) {
4479                 /* Schedule next extended listen timeout */
4480                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4481                                        p2p->ext_listen_interval_usec,
4482                                        p2p_ext_listen_timeout, p2p, NULL);
4483         }
4484
4485         if ((p2p->cfg->is_p2p_in_progress &&
4486              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4487             (p2p->pending_action_state == P2P_PENDING_PD &&
4488              p2p->pd_retries > 0)) {
4489                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4490                         p2p_state_txt(p2p->state));
4491                 return;
4492         }
4493
4494         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4495                 /*
4496                  * This should not really happen, but it looks like the Listen
4497                  * command may fail is something else (e.g., a scan) was
4498                  * running at an inconvenient time. As a workaround, allow new
4499                  * Extended Listen operation to be started.
4500                  */
4501                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4502                 p2p->ext_listen_only = 0;
4503                 p2p_set_state(p2p, P2P_IDLE);
4504         }
4505
4506         if (p2p->state != P2P_IDLE) {
4507                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4508                 return;
4509         }
4510
4511         p2p_dbg(p2p, "Extended Listen timeout");
4512         p2p->ext_listen_only = 1;
4513         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4514                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4515                 p2p->ext_listen_only = 0;
4516         }
4517 }
4518
4519
4520 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4521                    unsigned int interval)
4522 {
4523         if (period > 65535 || interval > 65535 || period > interval ||
4524             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4525                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4526                         period, interval);
4527                 return -1;
4528         }
4529
4530         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4531
4532         if (interval == 0) {
4533                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4534                 p2p->ext_listen_period = 0;
4535                 p2p->ext_listen_interval = 0;
4536                 return 0;
4537         }
4538
4539         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4540                 period, interval);
4541         p2p->ext_listen_period = period;
4542         p2p->ext_listen_interval = interval;
4543         p2p->ext_listen_interval_sec = interval / 1000;
4544         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4545
4546         eloop_register_timeout(p2p->ext_listen_interval_sec,
4547                                p2p->ext_listen_interval_usec,
4548                                p2p_ext_listen_timeout, p2p, NULL);
4549
4550         return 0;
4551 }
4552
4553
4554 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4555                       const u8 *ie, size_t ie_len)
4556 {
4557         struct p2p_message msg;
4558
4559         if (bssid == NULL || ie == NULL)
4560                 return;
4561
4562         os_memset(&msg, 0, sizeof(msg));
4563         if (p2p_parse_ies(ie, ie_len, &msg))
4564                 return;
4565         if (msg.minor_reason_code == NULL) {
4566                 p2p_parse_free(&msg);
4567                 return;
4568         }
4569
4570         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4571                 " reason_code=%u minor_reason_code=%u",
4572                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4573
4574         p2p_parse_free(&msg);
4575 }
4576
4577
4578 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4579                         const u8 *ie, size_t ie_len)
4580 {
4581         struct p2p_message msg;
4582
4583         if (bssid == NULL || ie == NULL)
4584                 return;
4585
4586         os_memset(&msg, 0, sizeof(msg));
4587         if (p2p_parse_ies(ie, ie_len, &msg))
4588                 return;
4589         if (msg.minor_reason_code == NULL) {
4590                 p2p_parse_free(&msg);
4591                 return;
4592         }
4593
4594         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4595                 " reason_code=%u minor_reason_code=%u",
4596                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4597
4598         p2p_parse_free(&msg);
4599 }
4600
4601
4602 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4603 {
4604         if (enabled) {
4605                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4606                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4607         } else {
4608                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4609                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4610         }
4611 }
4612
4613
4614 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4615                                  u8 *op_channel)
4616 {
4617         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4618 }
4619
4620
4621 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4622                            u8 forced)
4623 {
4624         if (p2p_channel_to_freq(reg_class, channel) < 0)
4625                 return -1;
4626
4627         /*
4628          * Listen channel was set in configuration or set by control interface;
4629          * cannot override it.
4630          */
4631         if (p2p->cfg->channel_forced && forced == 0) {
4632                 p2p_dbg(p2p,
4633                         "Listen channel was previously configured - do not override based on optimization");
4634                 return -1;
4635         }
4636
4637         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4638                 reg_class, channel);
4639
4640         if (p2p->state == P2P_IDLE) {
4641                 p2p->cfg->reg_class = reg_class;
4642                 p2p->cfg->channel = channel;
4643                 p2p->cfg->channel_forced = forced;
4644         } else {
4645                 p2p_dbg(p2p, "Defer setting listen channel");
4646                 p2p->pending_reg_class = reg_class;
4647                 p2p->pending_channel = channel;
4648                 p2p->pending_channel_forced = forced;
4649         }
4650
4651         return 0;
4652 }
4653
4654
4655 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4656 {
4657         return p2p->cfg->channel;
4658 }
4659
4660
4661 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4662 {
4663         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4664         if (postfix == NULL) {
4665                 p2p->cfg->ssid_postfix_len = 0;
4666                 return 0;
4667         }
4668         if (len > sizeof(p2p->cfg->ssid_postfix))
4669                 return -1;
4670         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4671         p2p->cfg->ssid_postfix_len = len;
4672         return 0;
4673 }
4674
4675
4676 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4677                          int cfg_op_channel)
4678 {
4679         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4680                 return -1;
4681
4682         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4683                 op_reg_class, op_channel);
4684         p2p->cfg->op_reg_class = op_reg_class;
4685         p2p->cfg->op_channel = op_channel;
4686         p2p->cfg->cfg_op_channel = cfg_op_channel;
4687         return 0;
4688 }
4689
4690
4691 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4692                       const struct p2p_channel *pref_chan)
4693 {
4694         struct p2p_channel *n;
4695
4696         if (pref_chan) {
4697                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4698                 if (n == NULL)
4699                         return -1;
4700                 os_memcpy(n, pref_chan,
4701                           num_pref_chan * sizeof(struct p2p_channel));
4702         } else
4703                 n = NULL;
4704
4705         os_free(p2p->cfg->pref_chan);
4706         p2p->cfg->pref_chan = n;
4707         p2p->cfg->num_pref_chan = num_pref_chan;
4708
4709         return 0;
4710 }
4711
4712
4713 int p2p_set_no_go_freq(struct p2p_data *p2p,
4714                        const struct wpa_freq_range_list *list)
4715 {
4716         struct wpa_freq_range *tmp;
4717
4718         if (list == NULL || list->num == 0) {
4719                 os_free(p2p->no_go_freq.range);
4720                 p2p->no_go_freq.range = NULL;
4721                 p2p->no_go_freq.num = 0;
4722                 return 0;
4723         }
4724
4725         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4726         if (tmp == NULL)
4727                 return -1;
4728         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4729         os_free(p2p->no_go_freq.range);
4730         p2p->no_go_freq.range = tmp;
4731         p2p->no_go_freq.num = list->num;
4732         p2p_dbg(p2p, "Updated no GO chan list");
4733
4734         return 0;
4735 }
4736
4737
4738 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4739                            u8 *iface_addr)
4740 {
4741         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4742         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4743                 return -1;
4744         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4745         return 0;
4746 }
4747
4748
4749 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4750                            u8 *dev_addr)
4751 {
4752         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4753         if (dev == NULL)
4754                 return -1;
4755         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4756         return 0;
4757 }
4758
4759
4760 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4761 {
4762         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4763         if (is_zero_ether_addr(p2p->peer_filter))
4764                 p2p_dbg(p2p, "Disable peer filter");
4765         else
4766                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4767                         MAC2STR(p2p->peer_filter));
4768 }
4769
4770
4771 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4772 {
4773         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4774         if (p2p->cross_connect == enabled)
4775                 return;
4776         p2p->cross_connect = enabled;
4777         /* TODO: may need to tear down any action group where we are GO(?) */
4778 }
4779
4780
4781 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4782 {
4783         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4784         if (dev == NULL)
4785                 return -1;
4786         if (dev->oper_freq <= 0)
4787                 return -1;
4788         return dev->oper_freq;
4789 }
4790
4791
4792 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4793 {
4794         p2p_dbg(p2p, "Intra BSS distribution %s",
4795                 enabled ? "enabled" : "disabled");
4796         p2p->cfg->p2p_intra_bss = enabled;
4797 }
4798
4799
4800 void p2p_update_channel_list(struct p2p_data *p2p,
4801                              const struct p2p_channels *chan,
4802                              const struct p2p_channels *cli_chan)
4803 {
4804         p2p_dbg(p2p, "Update channel list");
4805         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4806         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4807         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4808                   sizeof(struct p2p_channels));
4809         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4810 }
4811
4812
4813 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4814                     const u8 *src, const u8 *bssid, const u8 *buf,
4815                     size_t len, unsigned int wait_time)
4816 {
4817         if (p2p->p2p_scan_running) {
4818                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4819                 if (p2p->after_scan_tx) {
4820                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4821                         os_free(p2p->after_scan_tx);
4822                 }
4823                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4824                                                len);
4825                 if (p2p->after_scan_tx == NULL)
4826                         return -1;
4827                 p2p->after_scan_tx->freq = freq;
4828                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4829                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4830                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4831                 p2p->after_scan_tx->len = len;
4832                 p2p->after_scan_tx->wait_time = wait_time;
4833                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4834                 return 0;
4835         }
4836
4837         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4838                                      buf, len, wait_time);
4839 }
4840
4841
4842 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4843                            int freq_overall)
4844 {
4845         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4846                 freq_24, freq_5, freq_overall);
4847         p2p->best_freq_24 = freq_24;
4848         p2p->best_freq_5 = freq_5;
4849         p2p->best_freq_overall = freq_overall;
4850 }
4851
4852
4853 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4854 {
4855         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4856         p2p->own_freq_preference = freq;
4857 }
4858
4859
4860 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4861 {
4862         if (p2p == NULL || p2p->go_neg_peer == NULL)
4863                 return NULL;
4864         return p2p->go_neg_peer->info.p2p_device_addr;
4865 }
4866
4867
4868 const struct p2p_peer_info *
4869 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4870 {
4871         struct p2p_device *dev;
4872
4873         if (addr) {
4874                 dev = p2p_get_device(p2p, addr);
4875                 if (!dev)
4876                         return NULL;
4877
4878                 if (!next) {
4879                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4880                                 return NULL;
4881
4882                         return &dev->info;
4883                 } else {
4884                         do {
4885                                 dev = dl_list_first(&dev->list,
4886                                                     struct p2p_device,
4887                                                     list);
4888                                 if (!dev || &dev->list == &p2p->devices)
4889                                         return NULL;
4890                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4891                 }
4892         } else {
4893                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4894                 if (!dev)
4895                         return NULL;
4896                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4897                         dev = dl_list_first(&dev->list,
4898                                             struct p2p_device,
4899                                             list);
4900                         if (!dev || &dev->list == &p2p->devices)
4901                                 return NULL;
4902                 }
4903         }
4904
4905         return &dev->info;
4906 }
4907
4908
4909 int p2p_in_progress(struct p2p_data *p2p)
4910 {
4911         if (p2p == NULL)
4912                 return 0;
4913         if (p2p->state == P2P_SEARCH)
4914                 return 2;
4915         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4916 }
4917
4918
4919 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4920                             u8 client_timeout)
4921 {
4922         if (p2p) {
4923                 p2p->go_timeout = go_timeout;
4924                 p2p->client_timeout = client_timeout;
4925         }
4926 }
4927
4928
4929 #ifdef CONFIG_WIFI_DISPLAY
4930
4931 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4932 {
4933         size_t g;
4934         struct p2p_group *group;
4935
4936         for (g = 0; g < p2p->num_groups; g++) {
4937                 group = p2p->groups[g];
4938                 p2p_group_force_beacon_update_ies(group);
4939         }
4940 }
4941
4942
4943 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4944 {
4945         wpabuf_free(p2p->wfd_ie_beacon);
4946         p2p->wfd_ie_beacon = ie;
4947         p2p_update_wfd_ie_groups(p2p);
4948         return 0;
4949 }
4950
4951
4952 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4953 {
4954         wpabuf_free(p2p->wfd_ie_probe_req);
4955         p2p->wfd_ie_probe_req = ie;
4956         return 0;
4957 }
4958
4959
4960 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4961 {
4962         wpabuf_free(p2p->wfd_ie_probe_resp);
4963         p2p->wfd_ie_probe_resp = ie;
4964         p2p_update_wfd_ie_groups(p2p);
4965         return 0;
4966 }
4967
4968
4969 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4970 {
4971         wpabuf_free(p2p->wfd_ie_assoc_req);
4972         p2p->wfd_ie_assoc_req = ie;
4973         return 0;
4974 }
4975
4976
4977 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4978 {
4979         wpabuf_free(p2p->wfd_ie_invitation);
4980         p2p->wfd_ie_invitation = ie;
4981         return 0;
4982 }
4983
4984
4985 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4986 {
4987         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4988         p2p->wfd_ie_prov_disc_req = ie;
4989         return 0;
4990 }
4991
4992
4993 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4994 {
4995         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4996         p2p->wfd_ie_prov_disc_resp = ie;
4997         return 0;
4998 }
4999
5000
5001 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
5002 {
5003         wpabuf_free(p2p->wfd_ie_go_neg);
5004         p2p->wfd_ie_go_neg = ie;
5005         return 0;
5006 }
5007
5008
5009 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
5010 {
5011         wpabuf_free(p2p->wfd_dev_info);
5012         if (elem) {
5013                 p2p->wfd_dev_info = wpabuf_dup(elem);
5014                 if (p2p->wfd_dev_info == NULL)
5015                         return -1;
5016         } else
5017                 p2p->wfd_dev_info = NULL;
5018
5019         return 0;
5020 }
5021
5022
5023 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
5024 {
5025         wpabuf_free(p2p->wfd_assoc_bssid);
5026         if (elem) {
5027                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
5028                 if (p2p->wfd_assoc_bssid == NULL)
5029                         return -1;
5030         } else
5031                 p2p->wfd_assoc_bssid = NULL;
5032
5033         return 0;
5034 }
5035
5036
5037 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
5038                                   const struct wpabuf *elem)
5039 {
5040         wpabuf_free(p2p->wfd_coupled_sink_info);
5041         if (elem) {
5042                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
5043                 if (p2p->wfd_coupled_sink_info == NULL)
5044                         return -1;
5045         } else
5046                 p2p->wfd_coupled_sink_info = NULL;
5047
5048         return 0;
5049 }
5050
5051 #endif /* CONFIG_WIFI_DISPLAY */
5052
5053
5054 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
5055                      int max_disc_tu)
5056 {
5057         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
5058                 return -1;
5059
5060         p2p->min_disc_int = min_disc_int;
5061         p2p->max_disc_int = max_disc_int;
5062         p2p->max_disc_tu = max_disc_tu;
5063         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
5064                 min_disc_int, max_disc_int, max_disc_tu);
5065
5066         return 0;
5067 }
5068
5069
5070 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
5071 {
5072         va_list ap;
5073         char buf[500];
5074
5075         if (!p2p->cfg->debug_print)
5076                 return;
5077
5078         va_start(ap, fmt);
5079         vsnprintf(buf, sizeof(buf), fmt, ap);
5080         buf[sizeof(buf) - 1] = '\0';
5081         va_end(ap);
5082         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
5083 }
5084
5085
5086 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
5087 {
5088         va_list ap;
5089         char buf[500];
5090
5091         if (!p2p->cfg->debug_print)
5092                 return;
5093
5094         va_start(ap, fmt);
5095         vsnprintf(buf, sizeof(buf), fmt, ap);
5096         buf[sizeof(buf) - 1] = '\0';
5097         va_end(ap);
5098         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
5099 }
5100
5101
5102 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
5103 {
5104         va_list ap;
5105         char buf[500];
5106
5107         if (!p2p->cfg->debug_print)
5108                 return;
5109
5110         va_start(ap, fmt);
5111         vsnprintf(buf, sizeof(buf), fmt, ap);
5112         buf[sizeof(buf) - 1] = '\0';
5113         va_end(ap);
5114         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
5115 }
5116
5117
5118 void p2p_loop_on_known_peers(struct p2p_data *p2p,
5119                              void (*peer_callback)(struct p2p_peer_info *peer,
5120                                                    void *user_data),
5121                              void *user_data)
5122 {
5123         struct p2p_device *dev, *n;
5124
5125         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
5126                 peer_callback(&dev->info, user_data);
5127         }
5128 }
5129
5130
5131 #ifdef CONFIG_WPS_NFC
5132
5133 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
5134                                               int client_freq,
5135                                               const u8 *go_dev_addr,
5136                                               const u8 *ssid, size_t ssid_len)
5137 {
5138         struct wpabuf *buf;
5139         u8 op_class, channel;
5140         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
5141
5142         buf = wpabuf_alloc(1000);
5143         if (buf == NULL)
5144                 return NULL;
5145
5146         op_class = p2p->cfg->reg_class;
5147         channel = p2p->cfg->channel;
5148
5149         p2p_buf_add_capability(buf, p2p->dev_capab &
5150                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
5151         p2p_buf_add_device_info(buf, p2p, NULL);
5152
5153         if (p2p->num_groups > 0) {
5154                 int freq = p2p_group_get_freq(p2p->groups[0]);
5155                 role = P2P_GO_IN_A_GROUP;
5156                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
5157                         p2p_dbg(p2p,
5158                                 "Unknown GO operating frequency %d MHz for NFC handover",
5159                                 freq);
5160                         wpabuf_free(buf);
5161                         return NULL;
5162                 }
5163         } else if (client_freq > 0) {
5164                 role = P2P_CLIENT_IN_A_GROUP;
5165                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
5166                         p2p_dbg(p2p,
5167                                 "Unknown client operating frequency %d MHz for NFC handover",
5168                                 client_freq);
5169                         wpabuf_free(buf);
5170                         return NULL;
5171                 }
5172         }
5173
5174         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
5175                                        channel, role);
5176
5177         if (p2p->num_groups > 0) {
5178                 /* Limit number of clients to avoid very long message */
5179                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
5180                 p2p_group_buf_add_id(p2p->groups[0], buf);
5181         } else if (client_freq > 0 &&
5182                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
5183                    ssid && ssid_len > 0) {
5184                 /*
5185                  * Add the optional P2P Group ID to indicate in which group this
5186                  * device is a P2P Client.
5187                  */
5188                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
5189         }
5190
5191         return buf;
5192 }
5193
5194
5195 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
5196                                            int client_freq,
5197                                            const u8 *go_dev_addr,
5198                                            const u8 *ssid, size_t ssid_len)
5199 {
5200         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5201                                       ssid_len);
5202 }
5203
5204
5205 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
5206                                            int client_freq,
5207                                            const u8 *go_dev_addr,
5208                                            const u8 *ssid, size_t ssid_len)
5209 {
5210         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
5211                                       ssid_len);
5212 }
5213
5214
5215 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
5216                                         struct p2p_nfc_params *params)
5217 {
5218         struct p2p_message msg;
5219         struct p2p_device *dev;
5220         const u8 *p2p_dev_addr;
5221         int freq;
5222         enum p2p_role_indication role;
5223
5224         params->next_step = NO_ACTION;
5225
5226         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
5227                                    params->p2p_attr, params->p2p_len, &msg)) {
5228                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
5229                 p2p_parse_free(&msg);
5230                 return -1;
5231         }
5232
5233         if (msg.p2p_device_addr)
5234                 p2p_dev_addr = msg.p2p_device_addr;
5235         else if (msg.device_id)
5236                 p2p_dev_addr = msg.device_id;
5237         else {
5238                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5239                 p2p_parse_free(&msg);
5240                 return -1;
5241         }
5242
5243         if (msg.oob_dev_password) {
5244                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5245                           msg.oob_dev_password_len);
5246                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5247         }
5248
5249         dev = p2p_create_device(p2p, p2p_dev_addr);
5250         if (dev == NULL) {
5251                 p2p_parse_free(&msg);
5252                 return -1;
5253         }
5254
5255         params->peer = &dev->info;
5256
5257         os_get_reltime(&dev->last_seen);
5258         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5259         p2p_copy_wps_info(p2p, dev, 0, &msg);
5260
5261         if (!msg.oob_go_neg_channel) {
5262                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5263                 return -1;
5264         }
5265
5266         if (msg.oob_go_neg_channel[3] == 0 &&
5267             msg.oob_go_neg_channel[4] == 0)
5268                 freq = 0;
5269         else
5270                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5271                                            msg.oob_go_neg_channel[4]);
5272         if (freq < 0) {
5273                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5274                 return -1;
5275         }
5276         role = msg.oob_go_neg_channel[5];
5277
5278         if (role == P2P_GO_IN_A_GROUP) {
5279                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5280                 params->go_freq = freq;
5281         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5282                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5283                         freq);
5284                 params->go_freq = freq;
5285         } else
5286                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5287         dev->oob_go_neg_freq = freq;
5288
5289         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5290                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5291                                            p2p->cfg->channel);
5292                 if (freq < 0) {
5293                         p2p_dbg(p2p, "Own listen channel not known");
5294                         return -1;
5295                 }
5296                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5297                 dev->oob_go_neg_freq = freq;
5298         }
5299
5300         if (msg.group_id) {
5301                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5302                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5303                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5304                           params->go_ssid_len);
5305         }
5306
5307         if (dev->flags & P2P_DEV_USER_REJECTED) {
5308                 p2p_dbg(p2p, "Do not report rejected device");
5309                 p2p_parse_free(&msg);
5310                 return 0;
5311         }
5312
5313         if (!(dev->flags & P2P_DEV_REPORTED)) {
5314                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5315                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5316                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5317         }
5318         p2p_parse_free(&msg);
5319
5320         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5321                 params->next_step = BOTH_GO;
5322         else if (role == P2P_GO_IN_A_GROUP)
5323                 params->next_step = JOIN_GROUP;
5324         else if (role == P2P_CLIENT_IN_A_GROUP) {
5325                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5326                 params->next_step = PEER_CLIENT;
5327         } else if (p2p->num_groups > 0)
5328                 params->next_step = AUTH_JOIN;
5329         else if (params->sel)
5330                 params->next_step = INIT_GO_NEG;
5331         else
5332                 params->next_step = RESP_GO_NEG;
5333
5334         return 0;
5335 }
5336
5337
5338 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5339                                       int go_intent,
5340                                       const u8 *own_interface_addr)
5341 {
5342
5343         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5344         if (dev_pw_id == 0) {
5345                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5346                 return;
5347         }
5348
5349         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5350                 dev_pw_id);
5351
5352         p2p->go_intent = go_intent;
5353         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5354 }
5355
5356 #endif /* CONFIG_WPS_NFC */
5357
5358
5359 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5360 {
5361         if (len < 8 || len > 63)
5362                 return -1;
5363         p2p->cfg->passphrase_len = len;
5364         return 0;
5365 }
5366
5367
5368 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5369 {
5370         p2p->vendor_elem = vendor_elem;
5371 }
5372
5373
5374 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5375 {
5376         struct p2p_data *p2p = eloop_ctx;
5377
5378         p2p_dbg(p2p,
5379                 "Timeout on waiting peer to become ready for GO Negotiation");
5380         p2p_go_neg_failed(p2p, -1);
5381 }