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 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 157 {
 158         struct p2p_device *dev = NULL;
 159
 160         if (!addr || !p2p)
 161                 return 0;
 162
 163         dev = p2p_get_device(p2p, addr);
 164         if (dev)
 165                 return dev->wps_prov_info;
 166         else
 167                 return 0;
 168 }
 169
 170
 171 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 172 {
 173         struct p2p_device *dev = NULL;
 174
 175         if (!addr || !p2p)
 176                 return;
 177
 178         dev = p2p_get_device(p2p, addr);
 179         if (dev)
 180                 dev->wps_prov_info = 0;
 181 }
 182
 183
 184 void p2p_set_state(struct p2p_data *p2p, int new_state)
 185 {
 186         p2p_dbg(p2p, "State %s -> %s",
 187                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 188         p2p->state = new_state;
 189
 190         if (new_state == P2P_IDLE && p2p->pending_channel) {
 191                 p2p_dbg(p2p, "Apply change in listen channel");
 192                 p2p->cfg->reg_class = p2p->pending_reg_class;
 193                 p2p->cfg->channel = p2p->pending_channel;
 194                 p2p->pending_reg_class = 0;
 195                 p2p->pending_channel = 0;
 196         }
 197 }
 198
 199
 200 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 201 {
 202         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 203                 p2p_state_txt(p2p->state), sec, usec);
 204         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 205         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 206 }
 207
 208
 209 void p2p_clear_timeout(struct p2p_data *p2p)
 210 {
 211         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 212         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 213 }
 214
 215
 216 void p2p_go_neg_failed(struct p2p_data *p2p, int status)
 217 {
 218         struct p2p_go_neg_results res;
 219         struct p2p_device *peer = p2p->go_neg_peer;
 220
 221         if (!peer)
 222                 return;
 223
 224         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
 225         if (p2p->state != P2P_SEARCH) {
 226                 /*
 227                  * Clear timeouts related to GO Negotiation if no new p2p_find
 228                  * has been started.
 229                  */
 230                 p2p_clear_timeout(p2p);
 231                 p2p_set_state(p2p, P2P_IDLE);
 232         }
 233
 234         peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 235         peer->wps_method = WPS_NOT_READY;
 236         peer->oob_pw_id = 0;
 237         wpabuf_free(peer->go_neg_conf);
 238         peer->go_neg_conf = NULL;
 239         p2p->go_neg_peer = NULL;
 240
 241         os_memset(&res, 0, sizeof(res));
 242         res.status = status;
 243         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
 244         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
 245         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 246 }
 247
 248
 249 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 250 {
 251         unsigned int r, tu;
 252         int freq;
 253         struct wpabuf *ies;
 254
 255         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 256                 p2p_state_txt(p2p->state));
 257
 258         if (p2p->pending_listen_freq) {
 259                 /* We have a pending p2p_listen request */
 260                 p2p_dbg(p2p, "p2p_listen command pending already");
 261                 return;
 262         }
 263
 264         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 265         if (freq < 0) {
 266                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 267                 return;
 268         }
 269
 270         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
 271                 r = 0;
 272         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 273               p2p->min_disc_int) * 100;
 274         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 275                 tu = p2p->max_disc_tu;
 276         if (!dev_disc && tu < 100)
 277                 tu = 100; /* Need to wait in non-device discovery use cases */
 278         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 279                 tu = p2p->cfg->max_listen * 1000 / 1024;
 280
 281         if (tu == 0) {
 282                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 283                 p2p_set_timeout(p2p, 0, 0);
 284                 return;
 285         }
 286
 287         ies = p2p_build_probe_resp_ies(p2p);
 288         if (ies == NULL)
 289                 return;
 290
 291         p2p->pending_listen_freq = freq;
 292         p2p->pending_listen_sec = 0;
 293         p2p->pending_listen_usec = 1024 * tu;
 294
 295         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 296                     ies) < 0) {
 297                 p2p_dbg(p2p, "Failed to start listen mode");
 298                 p2p->pending_listen_freq = 0;
 299         }
 300         wpabuf_free(ies);
 301 }
 302
 303
 304 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 305 {
 306         int freq;
 307         struct wpabuf *ies;
 308
 309         p2p_dbg(p2p, "Going to listen(only) state");
 310
 311         if (p2p->pending_listen_freq) {
 312                 /* We have a pending p2p_listen request */
 313                 p2p_dbg(p2p, "p2p_listen command pending already");
 314                 return -1;
 315         }
 316
 317         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 318         if (freq < 0) {
 319                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 320                 return -1;
 321         }
 322
 323         p2p->pending_listen_sec = timeout / 1000;
 324         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 325
 326         if (p2p->p2p_scan_running) {
 327                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 328                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 329                         return 0;
 330                 }
 331                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 332                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 333                 return 0;
 334         }
 335
 336         ies = p2p_build_probe_resp_ies(p2p);
 337         if (ies == NULL)
 338                 return -1;
 339
 340         p2p->pending_listen_freq = freq;
 341
 342         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 343                 p2p_dbg(p2p, "Failed to start listen mode");
 344                 p2p->pending_listen_freq = 0;
 345                 wpabuf_free(ies);
 346                 return -1;
 347         }
 348         wpabuf_free(ies);
 349
 350         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 351
 352         return 0;
 353 }
 354
 355
 356 static void p2p_device_clear_reported(struct p2p_data *p2p)
 357 {
 358         struct p2p_device *dev;
 359         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 360                 dev->flags &= ~P2P_DEV_REPORTED;
 361                 dev->sd_reqs = 0;
 362         }
 363 }
 364
 365
 366 /**
 367  * p2p_get_device - Fetch a peer entry
 368  * @p2p: P2P module context from p2p_init()
 369  * @addr: P2P Device Address of the peer
 370  * Returns: Pointer to the device entry or %NULL if not found
 371  */
 372 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 373 {
 374         struct p2p_device *dev;
 375         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 376                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 377                         return dev;
 378         }
 379         return NULL;
 380 }
 381
 382
 383 /**
 384  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 385  * @p2p: P2P module context from p2p_init()
 386  * @addr: P2P Interface Address of the peer
 387  * Returns: Pointer to the device entry or %NULL if not found
 388  */
 389 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 390                                              const u8 *addr)
 391 {
 392         struct p2p_device *dev;
 393         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 394                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 395                         return dev;
 396         }
 397         return NULL;
 398 }
 399
 400
 401 /**
 402  * p2p_create_device - Create a peer entry
 403  * @p2p: P2P module context from p2p_init()
 404  * @addr: P2P Device Address of the peer
 405  * Returns: Pointer to the device entry or %NULL on failure
 406  *
 407  * If there is already an entry for the peer, it will be returned instead of
 408  * creating a new one.
 409  */
 410 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 411                                              const u8 *addr)
 412 {
 413         struct p2p_device *dev, *oldest = NULL;
 414         size_t count = 0;
 415
 416         dev = p2p_get_device(p2p, addr);
 417         if (dev)
 418                 return dev;
 419
 420         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 421                 count++;
 422                 if (oldest == NULL ||
 423                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 424                         oldest = dev;
 425         }
 426         if (count + 1 > p2p->cfg->max_peers && oldest) {
 427                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 428                 dl_list_del(&oldest->list);
 429                 p2p_device_free(p2p, oldest);
 430         }
 431
 432         dev = os_zalloc(sizeof(*dev));
 433         if (dev == NULL)
 434                 return NULL;
 435         dl_list_add(&p2p->devices, &dev->list);
 436         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 437
 438         return dev;
 439 }
 440
 441
 442 static void p2p_copy_client_info(struct p2p_device *dev,
 443                                  struct p2p_client_info *cli)
 444 {
 445         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 446         dev->info.device_name[cli->dev_name_len] = '\0';
 447         dev->info.dev_capab = cli->dev_capab;
 448         dev->info.config_methods = cli->config_methods;
 449         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 450         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 451         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 452                   dev->info.wps_sec_dev_type_list_len);
 453 }
 454
 455
 456 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 457                                  const u8 *go_interface_addr, int freq,
 458                                  const u8 *gi, size_t gi_len)
 459 {
 460         struct p2p_group_info info;
 461         size_t c;
 462         struct p2p_device *dev;
 463
 464         if (gi == NULL)
 465                 return 0;
 466
 467         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 468                 return -1;
 469
 470         /*
 471          * Clear old data for this group; if the devices are still in the
 472          * group, the information will be restored in the loop following this.
 473          */
 474         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 475                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 476                               ETH_ALEN) == 0) {
 477                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 478                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 479                 }
 480         }
 481
 482         for (c = 0; c < info.num_clients; c++) {
 483                 struct p2p_client_info *cli = &info.client[c];
 484                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 485                               ETH_ALEN) == 0)
 486                         continue; /* ignore our own entry */
 487                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 488                 if (dev) {
 489                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 490                                           P2P_DEV_PROBE_REQ_ONLY)) {
 491                                 /*
 492                                  * Update information since we have not
 493                                  * received this directly from the client.
 494                                  */
 495                                 p2p_copy_client_info(dev, cli);
 496                         } else {
 497                                 /*
 498                                  * Need to update P2P Client Discoverability
 499                                  * flag since it is valid only in P2P Group
 500                                  * Info attribute.
 501                                  */
 502                                 dev->info.dev_capab &=
 503                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 504                                 dev->info.dev_capab |=
 505                                         cli->dev_capab &
 506                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 507                         }
 508                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 509                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 510                         }
 511                 } else {
 512                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 513                         if (dev == NULL)
 514                                 continue;
 515                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 516                         p2p_copy_client_info(dev, cli);
 517                         dev->oper_freq = freq;
 518                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 519                                             dev->info.p2p_device_addr,
 520                                             &dev->info, 1);
 521                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 522                 }
 523
 524                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 525                           ETH_ALEN);
 526                 os_get_reltime(&dev->last_seen);
 527                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 528                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 529                           ETH_ALEN);
 530         }
 531
 532         return 0;
 533 }
 534
 535
 536 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 537                               int probe_req, const struct p2p_message *msg)
 538 {
 539         os_memcpy(dev->info.device_name, msg->device_name,
 540                   sizeof(dev->info.device_name));
 541
 542         if (msg->manufacturer &&
 543             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 544                 os_memset(dev->info.manufacturer, 0,
 545                           sizeof(dev->info.manufacturer));
 546                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 547                           msg->manufacturer_len);
 548         }
 549
 550         if (msg->model_name &&
 551             msg->model_name_len < sizeof(dev->info.model_name)) {
 552                 os_memset(dev->info.model_name, 0,
 553                           sizeof(dev->info.model_name));
 554                 os_memcpy(dev->info.model_name, msg->model_name,
 555                           msg->model_name_len);
 556         }
 557
 558         if (msg->model_number &&
 559             msg->model_number_len < sizeof(dev->info.model_number)) {
 560                 os_memset(dev->info.model_number, 0,
 561                           sizeof(dev->info.model_number));
 562                 os_memcpy(dev->info.model_number, msg->model_number,
 563                           msg->model_number_len);
 564         }
 565
 566         if (msg->serial_number &&
 567             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 568                 os_memset(dev->info.serial_number, 0,
 569                           sizeof(dev->info.serial_number));
 570                 os_memcpy(dev->info.serial_number, msg->serial_number,
 571                           msg->serial_number_len);
 572         }
 573
 574         if (msg->pri_dev_type)
 575                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 576                           sizeof(dev->info.pri_dev_type));
 577         else if (msg->wps_pri_dev_type)
 578                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 579                           sizeof(dev->info.pri_dev_type));
 580
 581         if (msg->wps_sec_dev_type_list) {
 582                 os_memcpy(dev->info.wps_sec_dev_type_list,
 583                           msg->wps_sec_dev_type_list,
 584                           msg->wps_sec_dev_type_list_len);
 585                 dev->info.wps_sec_dev_type_list_len =
 586                         msg->wps_sec_dev_type_list_len;
 587         }
 588
 589         if (msg->capability) {
 590                 /*
 591                  * P2P Client Discoverability bit is reserved in all frames
 592                  * that use this function, so do not change its value here.
 593                  */
 594                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 595                 dev->info.dev_capab |= msg->capability[0] &
 596                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 597                 dev->info.group_capab = msg->capability[1];
 598         }
 599
 600         if (msg->ext_listen_timing) {
 601                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 602                 dev->ext_listen_interval =
 603                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 604         }
 605
 606         if (!probe_req) {
 607                 u16 new_config_methods;
 608                 new_config_methods = msg->config_methods ?
 609                         msg->config_methods : msg->wps_config_methods;
 610                 if (new_config_methods &&
 611                     dev->info.config_methods != new_config_methods) {
 612                         p2p_dbg(p2p, "Update peer " MACSTR
 613                                 " config_methods 0x%x -> 0x%x",
 614                                 MAC2STR(dev->info.p2p_device_addr),
 615                                 dev->info.config_methods,
 616                                 new_config_methods);
 617                         dev->info.config_methods = new_config_methods;
 618                 }
 619         }
 620 }
 621
 622
 623 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies,
 624                                          size_t ies_len)
 625 {
 626         const u8 *pos, *end;
 627         u8 id, len;
 628
 629         wpabuf_free(dev->info.vendor_elems);
 630         dev->info.vendor_elems = NULL;
 631
 632         end = ies + ies_len;
 633
 634         for (pos = ies; pos + 1 < end; pos += len) {
 635                 id = *pos++;
 636                 len = *pos++;
 637
 638                 if (pos + len > end)
 639                         break;
 640
 641                 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3)
 642                         continue;
 643
 644                 if (len >= 4) {
 645                         u32 type = WPA_GET_BE32(pos);
 646
 647                         if (type == WPA_IE_VENDOR_TYPE ||
 648                             type == WMM_IE_VENDOR_TYPE ||
 649                             type == WPS_IE_VENDOR_TYPE ||
 650                             type == P2P_IE_VENDOR_TYPE ||
 651                             type == WFD_IE_VENDOR_TYPE)
 652                                 continue;
 653                 }
 654
 655                 /* Unknown vendor element - make raw IE data available */
 656                 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0)
 657                         break;
 658                 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len);
 659         }
 660 }
 661
 662
 663 static int p2p_compare_wfd_info(struct p2p_device *dev,
 664                               const struct p2p_message *msg)
 665 {
 666         if (dev->info.wfd_subelems && msg->wfd_subelems) {
 667                 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used)
 668                         return 1;
 669
 670                 return os_memcmp(dev->info.wfd_subelems->buf,
 671                                  msg->wfd_subelems->buf,
 672                                  dev->info.wfd_subelems->used);
 673         }
 674         if (dev->info.wfd_subelems || msg->wfd_subelems)
 675                 return 1;
 676
 677         return 0;
 678 }
 679
 680
 681 /**
 682  * p2p_add_device - Add peer entries based on scan results or P2P frames
 683  * @p2p: P2P module context from p2p_init()
 684  * @addr: Source address of Beacon or Probe Response frame (may be either
 685  *      P2P Device Address or P2P Interface Address)
 686  * @level: Signal level (signal strength of the received frame from the peer)
 687  * @freq: Frequency on which the Beacon or Probe Response frame was received
 688  * @rx_time: Time when the result was received
 689  * @ies: IEs from the Beacon or Probe Response frame
 690  * @ies_len: Length of ies buffer in octets
 691  * @scan_res: Whether this was based on scan results
 692  * Returns: 0 on success, -1 on failure
 693  *
 694  * If the scan result is for a GO, the clients in the group will also be added
 695  * to the peer table. This function can also be used with some other frames
 696  * like Provision Discovery Request that contains P2P Capability and P2P Device
 697  * Info attributes.
 698  */
 699 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 700                    struct os_reltime *rx_time, int level, const u8 *ies,
 701                    size_t ies_len, int scan_res)
 702 {
 703         struct p2p_device *dev;
 704         struct p2p_message msg;
 705         const u8 *p2p_dev_addr;
 706         int wfd_changed;
 707         int i;
 708         struct os_reltime time_now;
 709
 710         os_memset(&msg, 0, sizeof(msg));
 711         if (p2p_parse_ies(ies, ies_len, &msg)) {
 712                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 713                 p2p_parse_free(&msg);
 714                 return -1;
 715         }
 716
 717         if (msg.p2p_device_addr)
 718                 p2p_dev_addr = msg.p2p_device_addr;
 719         else if (msg.device_id)
 720                 p2p_dev_addr = msg.device_id;
 721         else {
 722                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 723                 p2p_parse_free(&msg);
 724                 return -1;
 725         }
 726
 727         if (!is_zero_ether_addr(p2p->peer_filter) &&
 728             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 729                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 730                         " due to peer filter", MAC2STR(p2p_dev_addr));
 731                 p2p_parse_free(&msg);
 732                 return 0;
 733         }
 734
 735         dev = p2p_create_device(p2p, p2p_dev_addr);
 736         if (dev == NULL) {
 737                 p2p_parse_free(&msg);
 738                 return -1;
 739         }
 740
 741         if (rx_time == NULL) {
 742                 os_get_reltime(&time_now);
 743                 rx_time = &time_now;
 744         }
 745
 746         /*
 747          * Update the device entry only if the new peer
 748          * entry is newer than the one previously stored.
 749          */
 750         if (dev->last_seen.sec > 0 &&
 751             os_reltime_before(rx_time, &dev->last_seen)) {
 752                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 753                         (unsigned int) rx_time->sec,
 754                         (unsigned int) rx_time->usec,
 755                         (unsigned int) dev->last_seen.sec,
 756                         (unsigned int) dev->last_seen.usec);
 757                 p2p_parse_free(&msg);
 758                 return -1;
 759         }
 760
 761         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 762
 763         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 764
 765         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 766                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 767         if (msg.ssid &&
 768             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 769              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 770              != 0)) {
 771                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 772                 dev->oper_ssid_len = msg.ssid[1];
 773         }
 774
 775         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 776             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 777                 int ds_freq;
 778                 if (*msg.ds_params == 14)
 779                         ds_freq = 2484;
 780                 else
 781                         ds_freq = 2407 + *msg.ds_params * 5;
 782                 if (freq != ds_freq) {
 783                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 784                                 freq, ds_freq);
 785                         freq = ds_freq;
 786                 }
 787         }
 788
 789         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 790                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 791                         MACSTR " %d -> %d MHz (DS param %d)",
 792                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 793                         freq, msg.ds_params ? *msg.ds_params : -1);
 794         }
 795         if (scan_res) {
 796                 dev->listen_freq = freq;
 797                 if (msg.group_info)
 798                         dev->oper_freq = freq;
 799         }
 800         dev->info.level = level;
 801
 802         p2p_copy_wps_info(p2p, dev, 0, &msg);
 803
 804         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 805                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 806                 dev->info.wps_vendor_ext[i] = NULL;
 807         }
 808
 809         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 810                 if (msg.wps_vendor_ext[i] == NULL)
 811                         break;
 812                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 813                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 814                 if (dev->info.wps_vendor_ext[i] == NULL)
 815                         break;
 816         }
 817
 818         wfd_changed = p2p_compare_wfd_info(dev, &msg);
 819
 820         if (msg.wfd_subelems) {
 821                 wpabuf_free(dev->info.wfd_subelems);
 822                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 823         }
 824
 825         if (scan_res) {
 826                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 827                                       msg.group_info, msg.group_info_len);
 828         }
 829
 830         p2p_parse_free(&msg);
 831
 832         p2p_update_peer_vendor_elems(dev, ies, ies_len);
 833
 834         if (dev->flags & P2P_DEV_REPORTED && !wfd_changed)
 835                 return 0;
 836
 837         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 838                 freq, (unsigned int) rx_time->sec,
 839                 (unsigned int) rx_time->usec);
 840         if (dev->flags & P2P_DEV_USER_REJECTED) {
 841                 p2p_dbg(p2p, "Do not report rejected device");
 842                 return 0;
 843         }
 844
 845         if (dev->info.config_methods == 0 &&
 846             (freq == 2412 || freq == 2437 || freq == 2462)) {
 847                 /*
 848                  * If we have only seen a Beacon frame from a GO, we do not yet
 849                  * know what WPS config methods it supports. Since some
 850                  * applications use config_methods value from P2P-DEVICE-FOUND
 851                  * events, postpone reporting this peer until we've fully
 852                  * discovered its capabilities.
 853                  *
 854                  * At least for now, do this only if the peer was detected on
 855                  * one of the social channels since that peer can be easily be
 856                  * found again and there are no limitations of having to use
 857                  * passive scan on this channels, so this can be done through
 858                  * Probe Response frame that includes the config_methods
 859                  * information.
 860                  */
 861                 p2p_dbg(p2p, "Do not report peer " MACSTR
 862                         " with unknown config methods", MAC2STR(addr));
 863                 return 0;
 864         }
 865
 866         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 867                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 868         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 869
 870         return 0;
 871 }
 872
 873
 874 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 875 {
 876         int i;
 877
 878         if (p2p->go_neg_peer == dev) {
 879                 /*
 880                  * If GO Negotiation is in progress, report that it has failed.
 881                  */
 882                 p2p_go_neg_failed(p2p, -1);
 883         }
 884         if (p2p->invite_peer == dev)
 885                 p2p->invite_peer = NULL;
 886         if (p2p->sd_peer == dev)
 887                 p2p->sd_peer = NULL;
 888         if (p2p->pending_client_disc_go == dev)
 889                 p2p->pending_client_disc_go = NULL;
 890
 891         /* dev_lost() device, but only if it was previously dev_found() */
 892         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 893                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 894                                    dev->info.p2p_device_addr);
 895
 896         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 897                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 898                 dev->info.wps_vendor_ext[i] = NULL;
 899         }
 900
 901         wpabuf_free(dev->info.wfd_subelems);
 902         wpabuf_free(dev->info.vendor_elems);
 903         wpabuf_free(dev->go_neg_conf);
 904
 905         os_free(dev);
 906 }
 907
 908
 909 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 910 {
 911         struct p2p_channels *c;
 912         struct p2p_reg_class *cla;
 913         size_t cl, ch;
 914         int found = 0;
 915         u8 reg_class;
 916         u8 channel;
 917         int freq;
 918
 919         c = &p2p->cfg->channels;
 920         for (cl = 0; cl < c->reg_classes; cl++) {
 921                 cla = &c->reg_class[cl];
 922                 if (cla->reg_class != p2p->last_prog_scan_class)
 923                         continue;
 924                 for (ch = 0; ch < cla->channels; ch++) {
 925                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 926                                 found = 1;
 927                                 break;
 928                         }
 929                 }
 930                 if (found)
 931                         break;
 932         }
 933
 934         if (!found) {
 935                 /* Start from beginning */
 936                 reg_class = c->reg_class[0].reg_class;
 937                 channel = c->reg_class[0].channel[0];
 938         } else {
 939                 /* Pick the next channel */
 940                 ch++;
 941                 if (ch == cla->channels) {
 942                         cl++;
 943                         if (cl == c->reg_classes)
 944                                 cl = 0;
 945                         ch = 0;
 946                 }
 947                 reg_class = c->reg_class[cl].reg_class;
 948                 channel = c->reg_class[cl].channel[ch];
 949         }
 950
 951         freq = p2p_channel_to_freq(reg_class, channel);
 952         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 953                 reg_class, channel, freq);
 954         p2p->last_prog_scan_class = reg_class;
 955         p2p->last_prog_scan_chan = channel;
 956
 957         if (freq == 2412 || freq == 2437 || freq == 2462)
 958                 return 0; /* No need to add social channels */
 959         return freq;
 960 }
 961
 962
 963 static void p2p_search(struct p2p_data *p2p)
 964 {
 965         int freq = 0;
 966         enum p2p_scan_type type;
 967         u16 pw_id = DEV_PW_DEFAULT;
 968         int res;
 969
 970         if (p2p->drv_in_listen) {
 971                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 972                 return;
 973         }
 974         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 975
 976         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 977             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 978                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 979                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 980         } else {
 981                 type = P2P_SCAN_SOCIAL;
 982                 p2p_dbg(p2p, "Starting search");
 983         }
 984
 985         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 986                                  p2p->num_req_dev_types, p2p->req_dev_types,
 987                                  p2p->find_dev_id, pw_id);
 988         if (res < 0) {
 989                 p2p_dbg(p2p, "Scan request schedule failed");
 990                 p2p_continue_find(p2p);
 991         }
 992 }
 993
 994
 995 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 996 {
 997         struct p2p_data *p2p = eloop_ctx;
 998         p2p_dbg(p2p, "Find timeout -> stop");
 999         p2p_stop_find(p2p);
1000 }
1001
1002
1003 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status)
1004 {
1005         if (status != 0) {
1006                 p2p_dbg(p2p, "Scan request failed");
1007                 /* Do continue find even for the first p2p_find_scan */
1008                 p2p_continue_find(p2p);
1009         } else {
1010                 p2p_dbg(p2p, "Running p2p_scan");
1011                 p2p->p2p_scan_running = 1;
1012                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1013                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1014                                        p2p, NULL);
1015         }
1016 }
1017
1018
1019 static int p2p_run_after_scan(struct p2p_data *p2p)
1020 {
1021         struct p2p_device *dev;
1022         enum p2p_after_scan op;
1023
1024         if (p2p->after_scan_tx) {
1025                 p2p->after_scan_tx_in_progress = 1;
1026                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
1027                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
1028                                       p2p->after_scan_tx->freq,
1029                                       p2p->after_scan_tx->dst,
1030                                       p2p->after_scan_tx->src,
1031                                       p2p->after_scan_tx->bssid,
1032                                       (u8 *) (p2p->after_scan_tx + 1),
1033                                       p2p->after_scan_tx->len,
1034                                       p2p->after_scan_tx->wait_time);
1035                 os_free(p2p->after_scan_tx);
1036                 p2p->after_scan_tx = NULL;
1037                 return 1;
1038         }
1039
1040         op = p2p->start_after_scan;
1041         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1042         switch (op) {
1043         case P2P_AFTER_SCAN_NOTHING:
1044                 break;
1045         case P2P_AFTER_SCAN_LISTEN:
1046                 p2p_dbg(p2p, "Start previously requested Listen state");
1047                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
1048                            p2p->pending_listen_usec / 1000);
1049                 return 1;
1050         case P2P_AFTER_SCAN_CONNECT:
1051                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
1052                         MAC2STR(p2p->after_scan_peer));
1053                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
1054                 if (dev == NULL) {
1055                         p2p_dbg(p2p, "Peer not known anymore");
1056                         break;
1057                 }
1058                 p2p_connect_send(p2p, dev);
1059                 return 1;
1060         }
1061
1062         return 0;
1063 }
1064
1065
1066 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1067 {
1068         struct p2p_data *p2p = eloop_ctx;
1069         int running;
1070         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
1071         running = p2p->p2p_scan_running;
1072         /* Make sure we recover from missed scan results callback */
1073         p2p->p2p_scan_running = 0;
1074
1075         if (running)
1076                 p2p_run_after_scan(p2p);
1077 }
1078
1079
1080 static void p2p_free_req_dev_types(struct p2p_data *p2p)
1081 {
1082         p2p->num_req_dev_types = 0;
1083         os_free(p2p->req_dev_types);
1084         p2p->req_dev_types = NULL;
1085 }
1086
1087
1088 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash)
1089 {
1090         u8 buf[SHA256_MAC_LEN];
1091         char str_buf[256];
1092         const u8 *adv_array;
1093         size_t i, adv_len;
1094
1095         if (!str || !hash)
1096                 return 0;
1097
1098         if (!str[0]) {
1099                 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1100                 return 1;
1101         }
1102
1103         adv_array = (u8 *) str_buf;
1104         adv_len = os_strlen(str);
1105
1106         for (i = 0; str[i] && i < adv_len; i++) {
1107                 if (str[i] >= 'A' && str[i] <= 'Z')
1108                         str_buf[i] = str[i] - 'A' + 'a';
1109                 else
1110                         str_buf[i] = str[i];
1111         }
1112
1113         if (sha256_vector(1, &adv_array, &adv_len, buf))
1114                 return 0;
1115
1116         os_memcpy(hash, buf, P2PS_HASH_LEN);
1117         return 1;
1118 }
1119
1120
1121 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
1122              enum p2p_discovery_type type,
1123              unsigned int num_req_dev_types, const u8 *req_dev_types,
1124              const u8 *dev_id, unsigned int search_delay,
1125              u8 seek_count, const char **seek)
1126 {
1127         int res;
1128
1129         p2p_dbg(p2p, "Starting find (type=%d)", type);
1130         os_get_reltime(&p2p->find_start);
1131         if (p2p->p2p_scan_running) {
1132                 p2p_dbg(p2p, "p2p_scan is already running");
1133         }
1134
1135         p2p_free_req_dev_types(p2p);
1136         if (req_dev_types && num_req_dev_types) {
1137                 p2p->req_dev_types = os_malloc(num_req_dev_types *
1138                                                WPS_DEV_TYPE_LEN);
1139                 if (p2p->req_dev_types == NULL)
1140                         return -1;
1141                 os_memcpy(p2p->req_dev_types, req_dev_types,
1142                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1143                 p2p->num_req_dev_types = num_req_dev_types;
1144         }
1145
1146         if (dev_id) {
1147                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1148                 p2p->find_dev_id = p2p->find_dev_id_buf;
1149         } else
1150                 p2p->find_dev_id = NULL;
1151
1152         if (seek_count == 0 || !seek) {
1153                 /* Not an ASP search */
1154                 p2p->p2ps_seek = 0;
1155         } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) {
1156                 /*
1157                  * An empty seek string means no hash values, but still an ASP
1158                  * search.
1159                  */
1160                 p2p->p2ps_seek_count = 0;
1161                 p2p->p2ps_seek = 1;
1162         } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) {
1163                 u8 buf[P2PS_HASH_LEN];
1164                 int i;
1165
1166                 p2p->p2ps_seek_count = seek_count;
1167                 for (i = 0; i < seek_count; i++) {
1168                         if (!p2ps_gen_hash(p2p, seek[i], buf))
1169                                 continue;
1170
1171                         /* If asking for wildcard, don't do others */
1172                         if (os_memcmp(buf, p2p->wild_card_hash,
1173                                       P2PS_HASH_LEN) == 0) {
1174                                 p2p->p2ps_seek_count = 0;
1175                                 break;
1176                         }
1177
1178                         os_memcpy(&p2p->query_hash[i * P2PS_HASH_LEN], buf,
1179                                   P2PS_HASH_LEN);
1180                 }
1181                 p2p->p2ps_seek = 1;
1182         } else {
1183                 p2p->p2ps_seek_count = 0;
1184                 p2p->p2ps_seek = 1;
1185         }
1186
1187         /* Special case to perform wildcard search */
1188         if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) {
1189                 p2p->p2ps_seek_count = 1;
1190                 os_memcpy(&p2p->query_hash, p2p->wild_card_hash, P2PS_HASH_LEN);
1191         }
1192
1193         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1194         p2p_clear_timeout(p2p);
1195         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1196         p2p->find_type = type;
1197         p2p_device_clear_reported(p2p);
1198         p2p_set_state(p2p, P2P_SEARCH);
1199         p2p->search_delay = search_delay;
1200         p2p->in_search_delay = 0;
1201         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1202         p2p->last_p2p_find_timeout = timeout;
1203         if (timeout)
1204                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1205                                        p2p, NULL);
1206         switch (type) {
1207         case P2P_FIND_START_WITH_FULL:
1208         case P2P_FIND_PROGRESSIVE:
1209                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1210                                          p2p->num_req_dev_types,
1211                                          p2p->req_dev_types, dev_id,
1212                                          DEV_PW_DEFAULT);
1213                 break;
1214         case P2P_FIND_ONLY_SOCIAL:
1215                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1216                                          p2p->num_req_dev_types,
1217                                          p2p->req_dev_types, dev_id,
1218                                          DEV_PW_DEFAULT);
1219                 break;
1220         default:
1221                 return -1;
1222         }
1223
1224         if (res != 0 && p2p->p2p_scan_running) {
1225                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1226                 /* wait for the previous p2p_scan to complete */
1227                 res = 0; /* do not report failure */
1228         } else if (res != 0) {
1229                 p2p_dbg(p2p, "Failed to start p2p_scan");
1230                 p2p_set_state(p2p, P2P_IDLE);
1231                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1232         }
1233
1234         return res;
1235 }
1236
1237
1238 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1239 {
1240         p2p_dbg(p2p, "Stopping find");
1241         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1242         p2p_clear_timeout(p2p);
1243         if (p2p->state == P2P_SEARCH)
1244                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1245
1246         p2p->p2ps_seek_count = 0;
1247
1248         p2p_set_state(p2p, P2P_IDLE);
1249         p2p_free_req_dev_types(p2p);
1250         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1251         if (p2p->go_neg_peer)
1252                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1253         p2p->go_neg_peer = NULL;
1254         p2p->sd_peer = NULL;
1255         p2p->invite_peer = NULL;
1256         p2p_stop_listen_for_freq(p2p, freq);
1257 }
1258
1259
1260 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1261 {
1262         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1263                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1264                 return;
1265         }
1266         if (p2p->in_listen) {
1267                 p2p->in_listen = 0;
1268                 p2p_clear_timeout(p2p);
1269         }
1270         if (p2p->drv_in_listen) {
1271                 /*
1272                  * The driver may not deliver callback to p2p_listen_end()
1273                  * when the operation gets canceled, so clear the internal
1274                  * variable that is tracking driver state.
1275                  */
1276                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1277                 p2p->drv_in_listen = 0;
1278         }
1279         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1280 }
1281
1282
1283 void p2p_stop_listen(struct p2p_data *p2p)
1284 {
1285         if (p2p->state != P2P_LISTEN_ONLY) {
1286                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1287                 return;
1288         }
1289
1290         p2p_stop_listen_for_freq(p2p, 0);
1291         p2p_set_state(p2p, P2P_IDLE);
1292 }
1293
1294
1295 void p2p_stop_find(struct p2p_data *p2p)
1296 {
1297         p2p->pending_listen_freq = 0;
1298         p2p_stop_find_for_freq(p2p, 0);
1299 }
1300
1301
1302 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1303                                     unsigned int force_freq,
1304                                     unsigned int pref_freq, int go)
1305 {
1306         u8 op_class, op_channel;
1307         unsigned int freq = force_freq ? force_freq : pref_freq;
1308
1309         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1310                 force_freq, pref_freq, go);
1311         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1312                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1313                 return -1;
1314         }
1315
1316         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1317             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1318                                           op_channel))) {
1319                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1320                         freq, op_class, op_channel);
1321                 return -1;
1322         }
1323
1324         p2p->op_reg_class = op_class;
1325         p2p->op_channel = op_channel;
1326
1327         if (force_freq) {
1328                 p2p->channels.reg_classes = 1;
1329                 p2p->channels.reg_class[0].channels = 1;
1330                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1331                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1332         } else {
1333                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1334                           sizeof(struct p2p_channels));
1335         }
1336
1337         return 0;
1338 }
1339
1340
1341 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1342 {
1343         u8 op_class, op_channel;
1344         const int op_classes_5ghz[] = { 124, 115, 0 };
1345         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1346         const int op_classes_vht[] = { 128, 0 };
1347
1348         p2p_dbg(p2p, "Prepare channel best");
1349
1350         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1351             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1352             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1353             == 0) {
1354                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1355                 p2p->op_reg_class = op_class;
1356                 p2p->op_channel = op_channel;
1357         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1358                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1359                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1360                    == 0) {
1361                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1362                 p2p->op_reg_class = op_class;
1363                 p2p->op_channel = op_channel;
1364         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1365                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1366                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1367                                        &op_channel) == 0) {
1368                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1369                 p2p->op_reg_class = op_class;
1370                 p2p->op_channel = op_channel;
1371         } else if (p2p->cfg->num_pref_chan > 0 &&
1372                    p2p_channels_includes(&p2p->cfg->channels,
1373                                          p2p->cfg->pref_chan[0].op_class,
1374                                          p2p->cfg->pref_chan[0].chan)) {
1375                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1376                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1377                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1378         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1379                                       &p2p->op_reg_class, &p2p->op_channel) ==
1380                    0) {
1381                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1382                         p2p->op_reg_class, p2p->op_channel);
1383         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1384                                       &p2p->op_reg_class, &p2p->op_channel) ==
1385                    0) {
1386                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1387                         p2p->op_reg_class, p2p->op_channel);
1388         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1389                                       &p2p->op_reg_class, &p2p->op_channel) ==
1390                    0) {
1391                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1392                         p2p->op_reg_class, p2p->op_channel);
1393         } else if (p2p_channels_includes(&p2p->cfg->channels,
1394                                          p2p->cfg->op_reg_class,
1395                                          p2p->cfg->op_channel)) {
1396                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1397                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1398                 p2p->op_channel = p2p->cfg->op_channel;
1399         } else if (p2p_channel_random_social(&p2p->cfg->channels,
1400                                              &p2p->op_reg_class,
1401                                              &p2p->op_channel) == 0) {
1402                 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference",
1403                         p2p->op_reg_class, p2p->op_channel);
1404         } else {
1405                 /* Select any random available channel from the first available
1406                  * operating class */
1407                 p2p_channel_select(&p2p->cfg->channels, NULL,
1408                                    &p2p->op_reg_class,
1409                                    &p2p->op_channel);
1410                 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference",
1411                         p2p->op_channel, p2p->op_reg_class);
1412         }
1413
1414         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1415                   sizeof(struct p2p_channels));
1416 }
1417
1418
1419 /**
1420  * p2p_prepare_channel - Select operating channel for GO Negotiation
1421  * @p2p: P2P module context from p2p_init()
1422  * @dev: Selected peer device
1423  * @force_freq: Forced frequency in MHz or 0 if not forced
1424  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1425  * @go: Whether the local end will be forced to be GO
1426  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1427  *
1428  * This function is used to do initial operating channel selection for GO
1429  * Negotiation prior to having received peer information. The selected channel
1430  * may be further optimized in p2p_reselect_channel() once the peer information
1431  * is available.
1432  */
1433 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1434                         unsigned int force_freq, unsigned int pref_freq, int go)
1435 {
1436         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1437                 force_freq, pref_freq, go);
1438         if (force_freq || pref_freq) {
1439                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1440                     0)
1441                         return -1;
1442         } else {
1443                 p2p_prepare_channel_best(p2p);
1444         }
1445         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1446         if (go)
1447                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1448         else if (!force_freq)
1449                 p2p_channels_union_inplace(&p2p->channels,
1450                                            &p2p->cfg->cli_channels);
1451         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1452
1453         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1454                 p2p->op_reg_class, p2p->op_channel,
1455                 force_freq ? " (forced)" : "");
1456
1457         if (force_freq)
1458                 dev->flags |= P2P_DEV_FORCE_FREQ;
1459         else
1460                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1461
1462         return 0;
1463 }
1464
1465
1466 static void p2p_set_dev_persistent(struct p2p_device *dev,
1467                                    int persistent_group)
1468 {
1469         switch (persistent_group) {
1470         case 0:
1471                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1472                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1473                 break;
1474         case 1:
1475                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1476                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1477                 break;
1478         case 2:
1479                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1480                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1481                 break;
1482         }
1483 }
1484
1485
1486 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1487                 enum p2p_wps_method wps_method,
1488                 int go_intent, const u8 *own_interface_addr,
1489                 unsigned int force_freq, int persistent_group,
1490                 const u8 *force_ssid, size_t force_ssid_len,
1491                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1492 {
1493         struct p2p_device *dev;
1494
1495         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1496                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1497                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1498                 "oob_pw_id=%u",
1499                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1500                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1501
1502         dev = p2p_get_device(p2p, peer_addr);
1503         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1504                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1505                         MAC2STR(peer_addr));
1506                 return -1;
1507         }
1508
1509         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1510                                 go_intent == 15) < 0)
1511                 return -1;
1512
1513         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1514                 if (!(dev->info.dev_capab &
1515                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1516                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1517                                 " that is in a group and is not discoverable",
1518                                 MAC2STR(peer_addr));
1519                         return -1;
1520                 }
1521                 if (dev->oper_freq <= 0) {
1522                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1523                                 " with incomplete information",
1524                                 MAC2STR(peer_addr));
1525                         return -1;
1526                 }
1527
1528                 /*
1529                  * First, try to connect directly. If the peer does not
1530                  * acknowledge frames, assume it is sleeping and use device
1531                  * discoverability via the GO at that point.
1532                  */
1533         }
1534
1535         p2p->ssid_set = 0;
1536         if (force_ssid) {
1537                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1538                                   force_ssid, force_ssid_len);
1539                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1540                 p2p->ssid_len = force_ssid_len;
1541                 p2p->ssid_set = 1;
1542         }
1543
1544         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1545         dev->flags &= ~P2P_DEV_USER_REJECTED;
1546         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1547         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1548         if (pd_before_go_neg)
1549                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1550         else {
1551                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1552                 /*
1553                  * Assign dialog token and tie breaker here to use the same
1554                  * values in each retry within the same GO Negotiation exchange.
1555                  */
1556                 dev->dialog_token++;
1557                 if (dev->dialog_token == 0)
1558                         dev->dialog_token = 1;
1559                 dev->tie_breaker = p2p->next_tie_breaker;
1560                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1561         }
1562         dev->connect_reqs = 0;
1563         dev->go_neg_req_sent = 0;
1564         dev->go_state = UNKNOWN_GO;
1565         p2p_set_dev_persistent(dev, persistent_group);
1566         p2p->go_intent = go_intent;
1567         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1568
1569         if (p2p->state != P2P_IDLE)
1570                 p2p_stop_find(p2p);
1571
1572         if (p2p->after_scan_tx) {
1573                 /*
1574                  * We need to drop the pending frame to avoid issues with the
1575                  * new GO Negotiation, e.g., when the pending frame was from a
1576                  * previous attempt at starting a GO Negotiation.
1577                  */
1578                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1579                 os_free(p2p->after_scan_tx);
1580                 p2p->after_scan_tx = NULL;
1581         }
1582
1583         dev->wps_method = wps_method;
1584         dev->oob_pw_id = oob_pw_id;
1585         dev->status = P2P_SC_SUCCESS;
1586
1587         if (p2p->p2p_scan_running) {
1588                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1589                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1590                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1591                 return 0;
1592         }
1593         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1594
1595         return p2p_connect_send(p2p, dev);
1596 }
1597
1598
1599 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1600                   enum p2p_wps_method wps_method,
1601                   int go_intent, const u8 *own_interface_addr,
1602                   unsigned int force_freq, int persistent_group,
1603                   const u8 *force_ssid, size_t force_ssid_len,
1604                   unsigned int pref_freq, u16 oob_pw_id)
1605 {
1606         struct p2p_device *dev;
1607
1608         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1609                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1610                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1611                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1612                 wps_method, persistent_group, oob_pw_id);
1613
1614         dev = p2p_get_device(p2p, peer_addr);
1615         if (dev == NULL) {
1616                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1617                         MAC2STR(peer_addr));
1618                 return -1;
1619         }
1620
1621         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1622                                 15) < 0)
1623                 return -1;
1624
1625         p2p->ssid_set = 0;
1626         if (force_ssid) {
1627                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1628                                   force_ssid, force_ssid_len);
1629                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1630                 p2p->ssid_len = force_ssid_len;
1631                 p2p->ssid_set = 1;
1632         }
1633
1634         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1635         dev->flags &= ~P2P_DEV_USER_REJECTED;
1636         dev->go_neg_req_sent = 0;
1637         dev->go_state = UNKNOWN_GO;
1638         p2p_set_dev_persistent(dev, persistent_group);
1639         p2p->go_intent = go_intent;
1640         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1641
1642         dev->wps_method = wps_method;
1643         dev->oob_pw_id = oob_pw_id;
1644         dev->status = P2P_SC_SUCCESS;
1645
1646         return 0;
1647 }
1648
1649
1650 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1651                       struct p2p_device *dev, struct p2p_message *msg)
1652 {
1653         os_get_reltime(&dev->last_seen);
1654
1655         p2p_copy_wps_info(p2p, dev, 0, msg);
1656
1657         if (msg->listen_channel) {
1658                 int freq;
1659                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1660                                            msg->listen_channel[4]);
1661                 if (freq < 0) {
1662                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1663                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1664                                 msg->listen_channel[0],
1665                                 msg->listen_channel[1],
1666                                 msg->listen_channel[2],
1667                                 msg->listen_channel[3],
1668                                 msg->listen_channel[4]);
1669                 } else {
1670                         p2p_dbg(p2p, "Update peer " MACSTR
1671                                 " Listen channel: %u -> %u MHz",
1672                                 MAC2STR(dev->info.p2p_device_addr),
1673                                 dev->listen_freq, freq);
1674                         dev->listen_freq = freq;
1675                 }
1676         }
1677
1678         if (msg->wfd_subelems) {
1679                 wpabuf_free(dev->info.wfd_subelems);
1680                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1681         }
1682
1683         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1684                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1685                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1686         } else {
1687                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1688                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1689                         "listen_freq=%d",
1690                         MAC2STR(dev->info.p2p_device_addr),
1691                         dev->info.dev_capab, dev->info.group_capab,
1692                         dev->info.device_name, dev->listen_freq);
1693         }
1694
1695         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1696
1697         if (dev->flags & P2P_DEV_USER_REJECTED) {
1698                 p2p_dbg(p2p, "Do not report rejected device");
1699                 return;
1700         }
1701
1702         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1703                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1704         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1705 }
1706
1707
1708 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1709 {
1710         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1711         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1712         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1713                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1714         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1715 }
1716
1717
1718 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1719 {
1720         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1721         p2p_random(params->passphrase, p2p->cfg->passphrase_len);
1722         return 0;
1723 }
1724
1725
1726 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1727 {
1728         struct p2p_go_neg_results res;
1729         int go = peer->go_state == LOCAL_GO;
1730         struct p2p_channels intersection;
1731
1732         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1733                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1734
1735         os_memset(&res, 0, sizeof(res));
1736         res.role_go = go;
1737         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1738         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1739         res.wps_method = peer->wps_method;
1740         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1741                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1742                         res.persistent_group = 2;
1743                 else
1744                         res.persistent_group = 1;
1745         }
1746
1747         if (go) {
1748                 /* Setup AP mode for WPS provisioning */
1749                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1750                                                p2p->op_channel);
1751                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1752                 res.ssid_len = p2p->ssid_len;
1753                 p2p_random(res.passphrase, p2p->cfg->passphrase_len);
1754         } else {
1755                 res.freq = peer->oper_freq;
1756                 if (p2p->ssid_len) {
1757                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1758                         res.ssid_len = p2p->ssid_len;
1759                 }
1760         }
1761
1762         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1763         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1764         p2p_channels_intersect(&p2p->channels, &peer->channels,
1765                                &intersection);
1766         if (go) {
1767                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1768                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1769                                   &intersection);
1770         }
1771
1772         p2p_channels_to_freqs(&intersection, res.freq_list,
1773                               P2P_MAX_CHANNELS);
1774
1775         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1776
1777         p2p_clear_timeout(p2p);
1778         p2p->ssid_set = 0;
1779         peer->go_neg_req_sent = 0;
1780         peer->wps_method = WPS_NOT_READY;
1781         peer->oob_pw_id = 0;
1782         wpabuf_free(peer->go_neg_conf);
1783         peer->go_neg_conf = NULL;
1784
1785         p2p_set_state(p2p, P2P_PROVISIONING);
1786         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1787 }
1788
1789
1790 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1791                               const u8 *data, size_t len, int rx_freq)
1792 {
1793         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1794         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1795
1796         if (len < 1)
1797                 return;
1798
1799         switch (data[0]) {
1800         case P2P_GO_NEG_REQ:
1801                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1802                 break;
1803         case P2P_GO_NEG_RESP:
1804                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1805                 break;
1806         case P2P_GO_NEG_CONF:
1807                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1808                 break;
1809         case P2P_INVITATION_REQ:
1810                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1811                                            rx_freq);
1812                 break;
1813         case P2P_INVITATION_RESP:
1814                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1815                 break;
1816         case P2P_PROV_DISC_REQ:
1817                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1818                 break;
1819         case P2P_PROV_DISC_RESP:
1820                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1821                 break;
1822         case P2P_DEV_DISC_REQ:
1823                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1824                 break;
1825         case P2P_DEV_DISC_RESP:
1826                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1827                 break;
1828         default:
1829                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1830                         data[0]);
1831                 break;
1832         }
1833 }
1834
1835
1836 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1837                                  const u8 *sa, const u8 *bssid, const u8 *data,
1838                                  size_t len, int freq)
1839 {
1840         if (len < 1)
1841                 return;
1842
1843         switch (data[0]) {
1844         case WLAN_PA_VENDOR_SPECIFIC:
1845                 data++;
1846                 len--;
1847                 if (len < 4)
1848                         return;
1849                 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1850                         return;
1851
1852                 data += 4;
1853                 len -= 4;
1854
1855                 p2p_rx_p2p_action(p2p, sa, data, len, freq);
1856                 break;
1857         case WLAN_PA_GAS_INITIAL_REQ:
1858                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1859                 break;
1860         case WLAN_PA_GAS_INITIAL_RESP:
1861                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1862                 break;
1863         case WLAN_PA_GAS_COMEBACK_REQ:
1864                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1865                 break;
1866         case WLAN_PA_GAS_COMEBACK_RESP:
1867                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1868                 break;
1869         }
1870 }
1871
1872
1873 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1874                    const u8 *bssid, u8 category,
1875                    const u8 *data, size_t len, int freq)
1876 {
1877         if (category == WLAN_ACTION_PUBLIC) {
1878                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1879                 return;
1880         }
1881
1882         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1883                 return;
1884
1885         if (len < 4)
1886                 return;
1887
1888         if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE)
1889                 return;
1890         data += 4;
1891         len -= 4;
1892
1893         /* P2P action frame */
1894         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1895         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1896
1897         if (len < 1)
1898                 return;
1899         switch (data[0]) {
1900         case P2P_NOA:
1901                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1902                 /* TODO */
1903                 break;
1904         case P2P_PRESENCE_REQ:
1905                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1906                 break;
1907         case P2P_PRESENCE_RESP:
1908                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1909                 break;
1910         case P2P_GO_DISC_REQ:
1911                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1912                 break;
1913         default:
1914                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1915                 break;
1916         }
1917 }
1918
1919
1920 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1921 {
1922         struct p2p_data *p2p = eloop_ctx;
1923         if (p2p->go_neg_peer == NULL)
1924                 return;
1925         if (p2p->pending_listen_freq) {
1926                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start");
1927                 p2p->pending_listen_freq = 0;
1928         }
1929         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1930         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1931         /*
1932          * Set new timeout to make sure a previously set one does not expire
1933          * too quickly while waiting for the GO Negotiation to complete.
1934          */
1935         p2p_set_timeout(p2p, 0, 500000);
1936         p2p_connect_send(p2p, p2p->go_neg_peer);
1937 }
1938
1939
1940 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1941 {
1942         struct p2p_data *p2p = eloop_ctx;
1943         if (p2p->invite_peer == NULL)
1944                 return;
1945         if (p2p->pending_listen_freq) {
1946                 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start");
1947                 p2p->pending_listen_freq = 0;
1948         }
1949         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1950         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1951                         p2p->invite_dev_pw_id);
1952 }
1953
1954
1955 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1956                                        const u8 *ie, size_t ie_len)
1957 {
1958         struct p2p_message msg;
1959         struct p2p_device *dev;
1960
1961         os_memset(&msg, 0, sizeof(msg));
1962         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1963         {
1964                 p2p_parse_free(&msg);
1965                 return; /* not a P2P probe */
1966         }
1967
1968         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1969             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1970             != 0) {
1971                 /* The Probe Request is not part of P2P Device Discovery. It is
1972                  * not known whether the source address of the frame is the P2P
1973                  * Device Address or P2P Interface Address. Do not add a new
1974                  * peer entry based on this frames.
1975                  */
1976                 p2p_parse_free(&msg);
1977                 return;
1978         }
1979
1980         dev = p2p_get_device(p2p, addr);
1981         if (dev) {
1982                 if (dev->country[0] == 0 && msg.listen_channel)
1983                         os_memcpy(dev->country, msg.listen_channel, 3);
1984                 os_get_reltime(&dev->last_seen);
1985                 p2p_parse_free(&msg);
1986                 return; /* already known */
1987         }
1988
1989         dev = p2p_create_device(p2p, addr);
1990         if (dev == NULL) {
1991                 p2p_parse_free(&msg);
1992                 return;
1993         }
1994
1995         os_get_reltime(&dev->last_seen);
1996         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1997
1998         if (msg.listen_channel) {
1999                 os_memcpy(dev->country, msg.listen_channel, 3);
2000                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
2001                                                        msg.listen_channel[4]);
2002         }
2003
2004         p2p_copy_wps_info(p2p, dev, 1, &msg);
2005
2006         if (msg.wfd_subelems) {
2007                 wpabuf_free(dev->info.wfd_subelems);
2008                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
2009         }
2010
2011         p2p_parse_free(&msg);
2012
2013         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
2014                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
2015                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
2016                 dev->info.group_capab, dev->info.device_name,
2017                 dev->listen_freq);
2018 }
2019
2020
2021 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
2022                                                 const u8 *addr,
2023                                                 struct p2p_message *msg)
2024 {
2025         struct p2p_device *dev;
2026
2027         dev = p2p_get_device(p2p, addr);
2028         if (dev) {
2029                 os_get_reltime(&dev->last_seen);
2030                 return dev; /* already known */
2031         }
2032
2033         dev = p2p_create_device(p2p, addr);
2034         if (dev == NULL)
2035                 return NULL;
2036
2037         p2p_add_dev_info(p2p, addr, dev, msg);
2038
2039         return dev;
2040 }
2041
2042
2043 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
2044 {
2045         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
2046                 return 1;
2047         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
2048             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
2049             WPA_GET_BE16(&req_dev_type[6]) == 0)
2050                 return 1; /* Category match with wildcard OUI/sub-category */
2051         return 0;
2052 }
2053
2054
2055 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
2056                         size_t num_req_dev_type)
2057 {
2058         size_t i;
2059         for (i = 0; i < num_req_dev_type; i++) {
2060                 if (dev_type_match(dev_type, req_dev_type[i]))
2061                         return 1;
2062         }
2063         return 0;
2064 }
2065
2066
2067 /**
2068  * p2p_match_dev_type - Match local device type with requested type
2069  * @p2p: P2P module context from p2p_init()
2070  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
2071  * Returns: 1 on match, 0 on mismatch
2072  *
2073  * This function can be used to match the Requested Device Type attribute in
2074  * WPS IE with the local device types for deciding whether to reply to a Probe
2075  * Request frame.
2076  */
2077 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
2078 {
2079         struct wps_parse_attr attr;
2080         size_t i;
2081
2082         if (wps_parse_msg(wps, &attr))
2083                 return 1; /* assume no Requested Device Type attributes */
2084
2085         if (attr.num_req_dev_type == 0)
2086                 return 1; /* no Requested Device Type attributes -> match */
2087
2088         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
2089                                 attr.num_req_dev_type))
2090                 return 1; /* Own Primary Device Type matches */
2091
2092         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) {
2093                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
2094                                         attr.req_dev_type,
2095                                         attr.num_req_dev_type))
2096                         return 1; /* Own Secondary Device Type matches */
2097         }
2098
2099         /* No matching device type found */
2100         return 0;
2101 }
2102
2103
2104 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
2105 {
2106         struct wpabuf *buf;
2107         u8 *len;
2108         int pw_id = -1;
2109         size_t extra = 0;
2110
2111 #ifdef CONFIG_WIFI_DISPLAY
2112         if (p2p->wfd_ie_probe_resp)
2113                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
2114 #endif /* CONFIG_WIFI_DISPLAY */
2115
2116         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2117                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2118
2119         buf = wpabuf_alloc(1000 + extra);
2120         if (buf == NULL)
2121                 return NULL;
2122
2123         if (p2p->go_neg_peer) {
2124                 /* Advertise immediate availability of WPS credential */
2125                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
2126         }
2127
2128         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
2129                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
2130                 wpabuf_free(buf);
2131                 return NULL;
2132         }
2133
2134 #ifdef CONFIG_WIFI_DISPLAY
2135         if (p2p->wfd_ie_probe_resp)
2136                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
2137 #endif /* CONFIG_WIFI_DISPLAY */
2138
2139         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P])
2140                 wpabuf_put_buf(buf,
2141                                p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]);
2142
2143         /* P2P IE */
2144         len = p2p_buf_add_ie_hdr(buf);
2145         p2p_buf_add_capability(buf, p2p->dev_capab &
2146                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2147         if (p2p->ext_listen_interval)
2148                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
2149                                               p2p->ext_listen_interval);
2150         p2p_buf_add_device_info(buf, p2p, NULL);
2151         p2p_buf_update_ie_hdr(buf, len);
2152
2153         return buf;
2154 }
2155
2156
2157 static enum p2p_probe_req_status
2158 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2159                 const u8 *bssid, const u8 *ie, size_t ie_len)
2160 {
2161         struct ieee802_11_elems elems;
2162         struct wpabuf *buf;
2163         struct ieee80211_mgmt *resp;
2164         struct p2p_message msg;
2165         struct wpabuf *ies;
2166
2167         if (!p2p->in_listen || !p2p->drv_in_listen) {
2168                 /* not in Listen state - ignore Probe Request */
2169                 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request",
2170                         p2p->in_listen, p2p->drv_in_listen);
2171                 return P2P_PREQ_NOT_LISTEN;
2172         }
2173
2174         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
2175             ParseFailed) {
2176                 /* Ignore invalid Probe Request frames */
2177                 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it");
2178                 return P2P_PREQ_MALFORMED;
2179         }
2180
2181         if (elems.p2p == NULL) {
2182                 /* not a P2P probe - ignore it */
2183                 p2p_dbg(p2p, "Not a P2P probe - ignore it");
2184                 return P2P_PREQ_NOT_P2P;
2185         }
2186
2187         if (dst && !is_broadcast_ether_addr(dst) &&
2188             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2189                 /* Not sent to the broadcast address or our P2P Device Address
2190                  */
2191                 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it",
2192                         MAC2STR(dst));
2193                 return P2P_PREQ_NOT_PROCESSED;
2194         }
2195
2196         if (bssid && !is_broadcast_ether_addr(bssid)) {
2197                 /* Not sent to the Wildcard BSSID */
2198                 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it",
2199                         MAC2STR(bssid));
2200                 return P2P_PREQ_NOT_PROCESSED;
2201         }
2202
2203         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2204             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2205             0) {
2206                 /* not using P2P Wildcard SSID - ignore */
2207                 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it");
2208                 return P2P_PREQ_NOT_PROCESSED;
2209         }
2210
2211         if (supp_rates_11b_only(&elems)) {
2212                 /* Indicates support for 11b rates only */
2213                 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it");
2214                 return P2P_PREQ_NOT_P2P;
2215         }
2216
2217         os_memset(&msg, 0, sizeof(msg));
2218         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2219                 /* Could not parse P2P attributes */
2220                 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it");
2221                 return P2P_PREQ_NOT_P2P;
2222         }
2223
2224         if (msg.device_id &&
2225             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2226                 /* Device ID did not match */
2227                 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it",
2228                         MAC2STR(msg.device_id));
2229                 p2p_parse_free(&msg);
2230                 return P2P_PREQ_NOT_PROCESSED;
2231         }
2232
2233         /* Check Requested Device Type match */
2234         if (msg.wps_attributes &&
2235             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2236                 /* No match with Requested Device Type */
2237                 p2p_dbg(p2p, "Probe Req requestred Device Type did not match - ignore it");
2238                 p2p_parse_free(&msg);
2239                 return P2P_PREQ_NOT_PROCESSED;
2240         }
2241         p2p_parse_free(&msg);
2242
2243         if (!p2p->cfg->send_probe_resp) {
2244                 /* Response generated elsewhere */
2245                 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response");
2246                 return P2P_PREQ_NOT_PROCESSED;
2247         }
2248
2249         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2250
2251         /*
2252          * We do not really have a specific BSS that this frame is advertising,
2253          * so build a frame that has some information in valid format. This is
2254          * really only used for discovery purposes, not to learn exact BSS
2255          * parameters.
2256          */
2257         ies = p2p_build_probe_resp_ies(p2p);
2258         if (ies == NULL)
2259                 return P2P_PREQ_NOT_PROCESSED;
2260
2261         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2262         if (buf == NULL) {
2263                 wpabuf_free(ies);
2264                 return P2P_PREQ_NOT_PROCESSED;
2265         }
2266
2267         resp = NULL;
2268         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2269
2270         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2271                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2272         os_memcpy(resp->da, addr, ETH_ALEN);
2273         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2274         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2275         resp->u.probe_resp.beacon_int = host_to_le16(100);
2276         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2277         resp->u.probe_resp.capab_info =
2278                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2279                              WLAN_CAPABILITY_PRIVACY |
2280                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2281
2282         wpabuf_put_u8(buf, WLAN_EID_SSID);
2283         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2284         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2285
2286         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2287         wpabuf_put_u8(buf, 8);
2288         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2289         wpabuf_put_u8(buf, 90 / 5);
2290         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2291         wpabuf_put_u8(buf, 180 / 5);
2292         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2293         wpabuf_put_u8(buf, 360 / 5);
2294         wpabuf_put_u8(buf, 480 / 5);
2295         wpabuf_put_u8(buf, 540 / 5);
2296
2297         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2298         wpabuf_put_u8(buf, 1);
2299         wpabuf_put_u8(buf, p2p->cfg->channel);
2300
2301         wpabuf_put_buf(buf, ies);
2302         wpabuf_free(ies);
2303
2304         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2305
2306         wpabuf_free(buf);
2307
2308         return P2P_PREQ_NOT_PROCESSED;
2309 }
2310
2311
2312 enum p2p_probe_req_status
2313 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2314                  const u8 *bssid, const u8 *ie, size_t ie_len)
2315 {
2316         enum p2p_probe_req_status res;
2317
2318         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2319
2320         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2321
2322         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2323             p2p->go_neg_peer &&
2324             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2325             == 0 &&
2326             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2327                 /* Received a Probe Request from GO Negotiation peer */
2328                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2329                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2330                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2331                 return P2P_PREQ_PROCESSED;
2332         }
2333
2334         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2335             p2p->invite_peer &&
2336             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2337             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2338             == 0) {
2339                 /* Received a Probe Request from Invite peer */
2340                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2341                 eloop_cancel_timeout(p2p_invite_start, p2p, NULL);
2342                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2343                 return P2P_PREQ_PROCESSED;
2344         }
2345
2346         return res;
2347 }
2348
2349
2350 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2351                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2352 {
2353         struct wpabuf *tmp;
2354         u8 *lpos;
2355         size_t tmplen;
2356         int res;
2357         u8 group_capab;
2358
2359         if (p2p_ie == NULL)
2360                 return 0; /* WLAN AP is not a P2P manager */
2361
2362         /*
2363          * (Re)Association Request - P2P IE
2364          * P2P Capability attribute (shall be present)
2365          * P2P Interface attribute (present if concurrent device and
2366          *      P2P Management is enabled)
2367          */
2368         tmp = wpabuf_alloc(200);
2369         if (tmp == NULL)
2370                 return -1;
2371
2372         lpos = p2p_buf_add_ie_hdr(tmp);
2373         group_capab = 0;
2374         if (p2p->num_groups > 0) {
2375                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2376                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2377                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2378                     p2p->cross_connect)
2379                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2380         }
2381         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2382         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2383             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2384                 p2p_buf_add_p2p_interface(tmp, p2p);
2385         p2p_buf_update_ie_hdr(tmp, lpos);
2386
2387         tmplen = wpabuf_len(tmp);
2388         if (tmplen > len)
2389                 res = -1;
2390         else {
2391                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2392                 res = tmplen;
2393         }
2394         wpabuf_free(tmp);
2395
2396         return res;
2397 }
2398
2399
2400 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2401                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2402 {
2403         struct wpabuf *tmp;
2404         u8 *lpos;
2405         struct p2p_device *peer;
2406         size_t tmplen;
2407         int res;
2408         size_t extra = 0;
2409
2410         if (!p2p_group)
2411                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2412
2413 #ifdef CONFIG_WIFI_DISPLAY
2414         if (p2p->wfd_ie_assoc_req)
2415                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2416 #endif /* CONFIG_WIFI_DISPLAY */
2417
2418         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2419                 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2420
2421         /*
2422          * (Re)Association Request - P2P IE
2423          * P2P Capability attribute (shall be present)
2424          * Extended Listen Timing (may be present)
2425          * P2P Device Info attribute (shall be present)
2426          */
2427         tmp = wpabuf_alloc(200 + extra);
2428         if (tmp == NULL)
2429                 return -1;
2430
2431 #ifdef CONFIG_WIFI_DISPLAY
2432         if (p2p->wfd_ie_assoc_req)
2433                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2434 #endif /* CONFIG_WIFI_DISPLAY */
2435
2436         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ])
2437                 wpabuf_put_buf(tmp,
2438                                p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]);
2439
2440         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2441
2442         lpos = p2p_buf_add_ie_hdr(tmp);
2443         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2444         if (p2p->ext_listen_interval)
2445                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2446                                               p2p->ext_listen_interval);
2447         p2p_buf_add_device_info(tmp, p2p, peer);
2448         p2p_buf_update_ie_hdr(tmp, lpos);
2449
2450         tmplen = wpabuf_len(tmp);
2451         if (tmplen > len)
2452                 res = -1;
2453         else {
2454                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2455                 res = tmplen;
2456         }
2457         wpabuf_free(tmp);
2458
2459         return res;
2460 }
2461
2462
2463 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2464 {
2465         struct wpabuf *p2p_ie;
2466         int ret;
2467
2468         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2469         if (p2p_ie == NULL)
2470                 return 0;
2471
2472         ret = p2p_attr_text(p2p_ie, buf, end);
2473         wpabuf_free(p2p_ie);
2474         return ret;
2475 }
2476
2477
2478 struct p2ps_advertisement *
2479 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id)
2480 {
2481         struct p2ps_advertisement *adv_data;
2482
2483         if (!p2p)
2484                 return NULL;
2485
2486         adv_data = p2p->p2ps_adv_list;
2487         while (adv_data) {
2488                 if (adv_data->id == adv_id)
2489                         return adv_data;
2490                 adv_data = adv_data->next;
2491         }
2492
2493         return NULL;
2494 }
2495
2496
2497 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id)
2498 {
2499         struct p2ps_advertisement *adv_data;
2500         struct p2ps_advertisement **prior;
2501
2502         if (!p2p)
2503                 return -1;
2504
2505         adv_data = p2p->p2ps_adv_list;
2506         prior = &p2p->p2ps_adv_list;
2507         while (adv_data) {
2508                 if (adv_data->id == adv_id) {
2509                         p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id);
2510                         *prior = adv_data->next;
2511                         os_free(adv_data);
2512                         return 0;
2513                 }
2514                 prior = &adv_data->next;
2515                 adv_data = adv_data->next;
2516         }
2517
2518         return -1;
2519 }
2520
2521
2522 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id,
2523                         const char *adv_str, u8 svc_state, u16 config_methods,
2524                         const char *svc_info)
2525 {
2526         struct p2ps_advertisement *adv_data, *tmp, **prev;
2527         u8 buf[P2PS_HASH_LEN];
2528         size_t adv_data_len, adv_len, info_len = 0;
2529
2530         if (!p2p || !adv_str || !adv_str[0])
2531                 return -1;
2532
2533         if (!(config_methods & p2p->cfg->config_methods)) {
2534                 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x",
2535                         config_methods, p2p->cfg->config_methods);
2536                 return -1;
2537         }
2538
2539         if (!p2ps_gen_hash(p2p, adv_str, buf))
2540                 return -1;
2541
2542         if (svc_info)
2543                 info_len = os_strlen(svc_info);
2544         adv_len = os_strlen(adv_str);
2545         adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 +
2546                 info_len + 1;
2547
2548         adv_data = os_zalloc(adv_data_len);
2549         if (!adv_data)
2550                 return -1;
2551
2552         os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN);
2553         adv_data->id = adv_id;
2554         adv_data->state = svc_state;
2555         adv_data->config_methods = config_methods & p2p->cfg->config_methods;
2556         adv_data->auto_accept = (u8) auto_accept;
2557         os_memcpy(adv_data->svc_name, adv_str, adv_len);
2558
2559         if (svc_info && info_len) {
2560                 adv_data->svc_info = &adv_data->svc_name[adv_len + 1];
2561                 os_memcpy(adv_data->svc_info, svc_info, info_len);
2562         }
2563
2564         /*
2565          * Group Advertisements by service string. They do not need to be
2566          * sorted, but groups allow easier Probe Response instance grouping
2567          */
2568         tmp = p2p->p2ps_adv_list;
2569         prev = &p2p->p2ps_adv_list;
2570         while (tmp) {
2571                 if (tmp->id == adv_data->id) {
2572                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) {
2573                                 os_free(adv_data);
2574                                 return -1;
2575                         }
2576                         adv_data->next = tmp->next;
2577                         *prev = adv_data;
2578                         os_free(tmp);
2579                         goto inserted;
2580                 } else {
2581                         if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) {
2582                                 adv_data->next = tmp->next;
2583                                 tmp->next = adv_data;
2584                                 goto inserted;
2585                         }
2586                 }
2587                 prev = &tmp->next;
2588                 tmp = tmp->next;
2589         }
2590
2591         /* No svc_name match found */
2592         adv_data->next = p2p->p2ps_adv_list;
2593         p2p->p2ps_adv_list = adv_data;
2594
2595 inserted:
2596         p2p_dbg(p2p,
2597                 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s'",
2598                 adv_id, adv_data->config_methods, svc_state, adv_str);
2599
2600         return 0;
2601 }
2602
2603
2604 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2605 {
2606         struct p2p_message msg;
2607
2608         os_memset(&msg, 0, sizeof(msg));
2609         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2610                 return -1;
2611
2612         if (msg.p2p_device_addr) {
2613                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2614                 return 0;
2615         } else if (msg.device_id) {
2616                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2617                 return 0;
2618         }
2619         return -1;
2620 }
2621
2622
2623 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2624 {
2625         struct wpabuf *p2p_ie;
2626         int ret;
2627
2628         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2629                                              P2P_IE_VENDOR_TYPE);
2630         if (p2p_ie == NULL)
2631                 return -1;
2632         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2633         wpabuf_free(p2p_ie);
2634         return ret;
2635 }
2636
2637
2638 static void p2p_clear_go_neg(struct p2p_data *p2p)
2639 {
2640         p2p->go_neg_peer = NULL;
2641         p2p_clear_timeout(p2p);
2642         p2p_set_state(p2p, P2P_IDLE);
2643 }
2644
2645
2646 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2647 {
2648         if (p2p->go_neg_peer == NULL) {
2649                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2650                 return; /* No pending Group Formation */
2651         }
2652
2653         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2654             0) {
2655                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2656                         MACSTR " (GO Negotiation peer " MACSTR ")",
2657                         MAC2STR(mac_addr),
2658                         MAC2STR(p2p->go_neg_peer->intended_addr));
2659                 return; /* Ignore unexpected peer address */
2660         }
2661
2662         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2663                 MAC2STR(mac_addr));
2664
2665         p2p_clear_go_neg(p2p);
2666 }
2667
2668
2669 void p2p_group_formation_failed(struct p2p_data *p2p)
2670 {
2671         if (p2p->go_neg_peer == NULL) {
2672                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2673                 return; /* No pending Group Formation */
2674         }
2675
2676         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2677                 MAC2STR(p2p->go_neg_peer->intended_addr));
2678
2679         p2p_clear_go_neg(p2p);
2680 }
2681
2682
2683 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2684 {
2685         struct p2p_data *p2p;
2686
2687         if (cfg->max_peers < 1 ||
2688             cfg->passphrase_len < 8 || cfg->passphrase_len > 63)
2689                 return NULL;
2690
2691         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2692         if (p2p == NULL)
2693                 return NULL;
2694         p2p->cfg = (struct p2p_config *) (p2p + 1);
2695         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2696         if (cfg->dev_name)
2697                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2698         if (cfg->manufacturer)
2699                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2700         if (cfg->model_name)
2701                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2702         if (cfg->model_number)
2703                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2704         if (cfg->serial_number)
2705                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2706         if (cfg->pref_chan) {
2707                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2708                                                 sizeof(struct p2p_channel));
2709                 if (p2p->cfg->pref_chan) {
2710                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2711                                   cfg->num_pref_chan *
2712                                   sizeof(struct p2p_channel));
2713                 } else
2714                         p2p->cfg->num_pref_chan = 0;
2715         }
2716
2717         p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash);
2718
2719         p2p->min_disc_int = 1;
2720         p2p->max_disc_int = 3;
2721         p2p->max_disc_tu = -1;
2722
2723         if (os_get_random(&p2p->next_tie_breaker, 1) < 0)
2724                 p2p->next_tie_breaker = 0;
2725         p2p->next_tie_breaker &= 0x01;
2726         if (cfg->sd_request)
2727                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2728         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2729         if (cfg->concurrent_operations)
2730                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2731         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2732
2733         dl_list_init(&p2p->devices);
2734
2735         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2736                                p2p_expiration_timeout, p2p, NULL);
2737
2738         p2p->go_timeout = 100;
2739         p2p->client_timeout = 20;
2740         p2p->num_p2p_sd_queries = 0;
2741
2742         p2p_dbg(p2p, "initialized");
2743         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2744         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2745
2746         return p2p;
2747 }
2748
2749
2750 void p2p_deinit(struct p2p_data *p2p)
2751 {
2752         struct p2ps_advertisement *adv, *prev;
2753
2754 #ifdef CONFIG_WIFI_DISPLAY
2755         wpabuf_free(p2p->wfd_ie_beacon);
2756         wpabuf_free(p2p->wfd_ie_probe_req);
2757         wpabuf_free(p2p->wfd_ie_probe_resp);
2758         wpabuf_free(p2p->wfd_ie_assoc_req);
2759         wpabuf_free(p2p->wfd_ie_invitation);
2760         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2761         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2762         wpabuf_free(p2p->wfd_ie_go_neg);
2763         wpabuf_free(p2p->wfd_dev_info);
2764         wpabuf_free(p2p->wfd_assoc_bssid);
2765         wpabuf_free(p2p->wfd_coupled_sink_info);
2766 #endif /* CONFIG_WIFI_DISPLAY */
2767
2768         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2769         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2770         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2771         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2772         eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2773         p2p_flush(p2p);
2774         p2p_free_req_dev_types(p2p);
2775         os_free(p2p->cfg->dev_name);
2776         os_free(p2p->cfg->manufacturer);
2777         os_free(p2p->cfg->model_name);
2778         os_free(p2p->cfg->model_number);
2779         os_free(p2p->cfg->serial_number);
2780         os_free(p2p->cfg->pref_chan);
2781         os_free(p2p->groups);
2782         wpabuf_free(p2p->sd_resp);
2783         os_free(p2p->after_scan_tx);
2784         p2p_remove_wps_vendor_extensions(p2p);
2785         os_free(p2p->no_go_freq.range);
2786
2787         adv = p2p->p2ps_adv_list;
2788         while (adv) {
2789                 prev = adv;
2790                 adv = adv->next;
2791                 os_free(prev);
2792         }
2793
2794         os_free(p2p);
2795 }
2796
2797
2798 void p2p_flush(struct p2p_data *p2p)
2799 {
2800         struct p2p_device *dev, *prev;
2801         p2p_stop_find(p2p);
2802         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2803                               list) {
2804                 dl_list_del(&dev->list);
2805                 p2p_device_free(p2p, dev);
2806         }
2807         p2p_free_sd_queries(p2p);
2808         os_free(p2p->after_scan_tx);
2809         p2p->after_scan_tx = NULL;
2810 }
2811
2812
2813 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2814 {
2815         struct p2p_device *dev;
2816
2817         dev = p2p_get_device(p2p, addr);
2818         if (dev == NULL)
2819                 return -1;
2820
2821         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2822
2823         if (p2p->go_neg_peer == dev) {
2824                 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL);
2825                 p2p->go_neg_peer = NULL;
2826         }
2827
2828         dev->wps_method = WPS_NOT_READY;
2829         dev->oob_pw_id = 0;
2830         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2831         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2832
2833         /* Check if after_scan_tx is for this peer. If so free it */
2834         if (p2p->after_scan_tx &&
2835             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2836                 os_free(p2p->after_scan_tx);
2837                 p2p->after_scan_tx = NULL;
2838         }
2839
2840         return 0;
2841 }
2842
2843
2844 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2845 {
2846         os_free(p2p->cfg->dev_name);
2847         if (dev_name) {
2848                 p2p->cfg->dev_name = os_strdup(dev_name);
2849                 if (p2p->cfg->dev_name == NULL)
2850                         return -1;
2851         } else
2852                 p2p->cfg->dev_name = NULL;
2853         return 0;
2854 }
2855
2856
2857 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2858 {
2859         os_free(p2p->cfg->manufacturer);
2860         p2p->cfg->manufacturer = NULL;
2861         if (manufacturer) {
2862                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2863                 if (p2p->cfg->manufacturer == NULL)
2864                         return -1;
2865         }
2866
2867         return 0;
2868 }
2869
2870
2871 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2872 {
2873         os_free(p2p->cfg->model_name);
2874         p2p->cfg->model_name = NULL;
2875         if (model_name) {
2876                 p2p->cfg->model_name = os_strdup(model_name);
2877                 if (p2p->cfg->model_name == NULL)
2878                         return -1;
2879         }
2880
2881         return 0;
2882 }
2883
2884
2885 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2886 {
2887         os_free(p2p->cfg->model_number);
2888         p2p->cfg->model_number = NULL;
2889         if (model_number) {
2890                 p2p->cfg->model_number = os_strdup(model_number);
2891                 if (p2p->cfg->model_number == NULL)
2892                         return -1;
2893         }
2894
2895         return 0;
2896 }
2897
2898
2899 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2900 {
2901         os_free(p2p->cfg->serial_number);
2902         p2p->cfg->serial_number = NULL;
2903         if (serial_number) {
2904                 p2p->cfg->serial_number = os_strdup(serial_number);
2905                 if (p2p->cfg->serial_number == NULL)
2906                         return -1;
2907         }
2908
2909         return 0;
2910 }
2911
2912
2913 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2914 {
2915         p2p->cfg->config_methods = config_methods;
2916 }
2917
2918
2919 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2920 {
2921         os_memcpy(p2p->cfg->uuid, uuid, 16);
2922 }
2923
2924
2925 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2926 {
2927         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2928         return 0;
2929 }
2930
2931
2932 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2933                           size_t num_dev_types)
2934 {
2935         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2936                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2937         p2p->cfg->num_sec_dev_types = num_dev_types;
2938         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2939         return 0;
2940 }
2941
2942
2943 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2944 {
2945         int i;
2946
2947         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2948                 wpabuf_free(p2p->wps_vendor_ext[i]);
2949                 p2p->wps_vendor_ext[i] = NULL;
2950         }
2951 }
2952
2953
2954 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2955                                  const struct wpabuf *vendor_ext)
2956 {
2957         int i;
2958
2959         if (vendor_ext == NULL)
2960                 return -1;
2961
2962         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2963                 if (p2p->wps_vendor_ext[i] == NULL)
2964                         break;
2965         }
2966         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2967                 return -1;
2968
2969         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2970         if (p2p->wps_vendor_ext[i] == NULL)
2971                 return -1;
2972
2973         return 0;
2974 }
2975
2976
2977 int p2p_set_country(struct p2p_data *p2p, const char *country)
2978 {
2979         os_memcpy(p2p->cfg->country, country, 3);
2980         return 0;
2981 }
2982
2983
2984 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev)
2985 {
2986         if (dev->sd_pending_bcast_queries == 0) {
2987                 /* Initialize with total number of registered broadcast
2988                  * SD queries. */
2989                 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries;
2990         }
2991
2992         if (p2p_start_sd(p2p, dev) == 0)
2993                 return 1;
2994
2995         if (dev->req_config_methods &&
2996             !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2997                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2998                         MACSTR " (config methods 0x%x)",
2999                         MAC2STR(dev->info.p2p_device_addr),
3000                         dev->req_config_methods);
3001                 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
3002                         return 1;
3003         }
3004
3005         return 0;
3006 }
3007
3008
3009 void p2p_continue_find(struct p2p_data *p2p)
3010 {
3011         struct p2p_device *dev;
3012         int found;
3013
3014         p2p_set_state(p2p, P2P_SEARCH);
3015
3016         /* Continue from the device following the last iteration */
3017         found = 0;
3018         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3019                 if (dev == p2p->last_p2p_find_oper) {
3020                         found = 1;
3021                         continue;
3022                 }
3023                 if (!found)
3024                         continue;
3025                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3026                         p2p->last_p2p_find_oper = dev;
3027                         return;
3028                 }
3029         }
3030
3031         /*
3032          * Wrap around to the beginning of the list and continue until the last
3033          * iteration device.
3034          */
3035         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3036                 if (p2p_pre_find_operation(p2p, dev) > 0) {
3037                         p2p->last_p2p_find_oper = dev;
3038                         return;
3039                 }
3040                 if (dev == p2p->last_p2p_find_oper)
3041                         break;
3042         }
3043
3044         p2p_listen_in_find(p2p, 1);
3045 }
3046
3047
3048 static void p2p_sd_cb(struct p2p_data *p2p, int success)
3049 {
3050         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
3051                 success);
3052         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3053
3054         if (!success) {
3055                 if (p2p->sd_peer)
3056                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3057                 p2p->sd_peer = NULL;
3058                 p2p_continue_find(p2p);
3059                 return;
3060         }
3061
3062         if (p2p->sd_peer == NULL) {
3063                 p2p_dbg(p2p, "No SD peer entry known");
3064                 p2p_continue_find(p2p);
3065                 return;
3066         }
3067
3068         if (p2p->sd_query && p2p->sd_query->for_all_peers) {
3069                 /* Update the pending broadcast SD query count for this device
3070                  */
3071                 p2p->sd_peer->sd_pending_bcast_queries--;
3072
3073                 /*
3074                  * If there are no pending broadcast queries for this device,
3075                  * mark it as done (-1).
3076                  */
3077                 if (p2p->sd_peer->sd_pending_bcast_queries == 0)
3078                         p2p->sd_peer->sd_pending_bcast_queries = -1;
3079         }
3080
3081         /* Wait for response from the peer */
3082         p2p_set_state(p2p, P2P_SD_DURING_FIND);
3083         p2p_set_timeout(p2p, 0, 200000);
3084 }
3085
3086
3087 /**
3088  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
3089  * @p2p: P2P module context from p2p_init()
3090  */
3091 static void p2p_retry_pd(struct p2p_data *p2p)
3092 {
3093         struct p2p_device *dev;
3094
3095         if (p2p->state != P2P_IDLE)
3096                 return;
3097
3098         /*
3099          * Retry the prov disc req attempt only for the peer that the user had
3100          * requested.
3101          */
3102
3103         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3104                 if (os_memcmp(p2p->pending_pd_devaddr,
3105                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
3106                         continue;
3107                 if (!dev->req_config_methods)
3108                         continue;
3109
3110                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
3111                         MACSTR " (config methods 0x%x)",
3112                         MAC2STR(dev->info.p2p_device_addr),
3113                         dev->req_config_methods);
3114                 p2p_send_prov_disc_req(p2p, dev,
3115                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
3116                                        p2p->pd_force_freq);
3117                 return;
3118         }
3119 }
3120
3121
3122 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
3123 {
3124         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
3125                 success);
3126
3127         /*
3128          * Postpone resetting the pending action state till after we actually
3129          * time out. This allows us to take some action like notifying any
3130          * interested parties about no response to the request.
3131          *
3132          * When the timer (below) goes off we check in IDLE, SEARCH, or
3133          * LISTEN_ONLY state, which are the only allowed states to issue a PD
3134          * requests in, if this was still pending and then raise notification.
3135          */
3136
3137         if (!success) {
3138                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3139
3140                 if (p2p->user_initiated_pd &&
3141                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
3142                 {
3143                         /* Retry request from timeout to avoid busy loops */
3144                         p2p->pending_action_state = P2P_PENDING_PD;
3145                         p2p_set_timeout(p2p, 0, 50000);
3146                 } else if (p2p->state != P2P_IDLE)
3147                         p2p_continue_find(p2p);
3148                 else if (p2p->user_initiated_pd) {
3149                         p2p->pending_action_state = P2P_PENDING_PD;
3150                         p2p_set_timeout(p2p, 0, 300000);
3151                 }
3152                 return;
3153         }
3154
3155         /*
3156          * This postponing, of resetting pending_action_state, needs to be
3157          * done only for user initiated PD requests and not internal ones.
3158          */
3159         if (p2p->user_initiated_pd)
3160                 p2p->pending_action_state = P2P_PENDING_PD;
3161         else
3162                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3163
3164         /* Wait for response from the peer */
3165         if (p2p->state == P2P_SEARCH)
3166                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
3167         p2p_set_timeout(p2p, 0, 200000);
3168 }
3169
3170
3171 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
3172                          struct os_reltime *rx_time, int level, const u8 *ies,
3173                          size_t ies_len)
3174 {
3175         if (os_reltime_before(rx_time, &p2p->find_start)) {
3176                 /*
3177                  * The driver may have cached (e.g., in cfg80211 BSS table) the
3178                  * scan results for relatively long time. To avoid reporting
3179                  * stale information, update P2P peers only based on results
3180                  * that have based on frames received after the last p2p_find
3181                  * operation was started.
3182                  */
3183                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
3184                         " (rx_time=%u.%06u)",
3185                         MAC2STR(bssid), (unsigned int) rx_time->sec,
3186                         (unsigned int) rx_time->usec);
3187                 return 0;
3188         }
3189
3190         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
3191
3192         return 0;
3193 }
3194
3195
3196 void p2p_scan_res_handled(struct p2p_data *p2p)
3197 {
3198         if (!p2p->p2p_scan_running) {
3199                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
3200         }
3201         p2p->p2p_scan_running = 0;
3202         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
3203
3204         if (p2p_run_after_scan(p2p))
3205                 return;
3206         if (p2p->state == P2P_SEARCH)
3207                 p2p_continue_find(p2p);
3208 }
3209
3210
3211 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
3212 {
3213         u8 dev_capab;
3214         u8 *len;
3215
3216 #ifdef CONFIG_WIFI_DISPLAY
3217         if (p2p->wfd_ie_probe_req)
3218                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
3219 #endif /* CONFIG_WIFI_DISPLAY */
3220
3221         if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3222                 wpabuf_put_buf(ies,
3223                                p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3224
3225         len = p2p_buf_add_ie_hdr(ies);
3226
3227         dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3228
3229         /* P2PS requires Probe Request frames to include SD bit */
3230         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3231                 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
3232
3233         p2p_buf_add_capability(ies, dev_capab, 0);
3234
3235         if (dev_id)
3236                 p2p_buf_add_device_id(ies, dev_id);
3237         if (p2p->cfg->reg_class && p2p->cfg->channel)
3238                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
3239                                            p2p->cfg->reg_class,
3240                                            p2p->cfg->channel);
3241         if (p2p->ext_listen_interval)
3242                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
3243                                               p2p->ext_listen_interval);
3244
3245         if (p2p->p2ps_seek && p2p->p2ps_seek_count)
3246                 p2p_buf_add_service_hash(ies, p2p);
3247
3248         /* TODO: p2p_buf_add_operating_channel() if GO */
3249         p2p_buf_update_ie_hdr(ies, len);
3250 }
3251
3252
3253 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
3254 {
3255         size_t len = 100;
3256
3257 #ifdef CONFIG_WIFI_DISPLAY
3258         if (p2p && p2p->wfd_ie_probe_req)
3259                 len += wpabuf_len(p2p->wfd_ie_probe_req);
3260 #endif /* CONFIG_WIFI_DISPLAY */
3261
3262         if (p2p && p2p->vendor_elem &&
3263             p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P])
3264                 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]);
3265
3266         return len;
3267 }
3268
3269
3270 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
3271 {
3272         return p2p_attr_text(p2p_ie, buf, end);
3273 }
3274
3275
3276 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
3277 {
3278         struct p2p_device *dev = p2p->go_neg_peer;
3279         int timeout;
3280
3281         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
3282
3283         if (dev == NULL) {
3284                 p2p_dbg(p2p, "No pending GO Negotiation");
3285                 return;
3286         }
3287
3288         if (success) {
3289                 if (dev->flags & P2P_DEV_USER_REJECTED) {
3290                         p2p_set_state(p2p, P2P_IDLE);
3291                         return;
3292                 }
3293         } else if (dev->go_neg_req_sent) {
3294                 /* Cancel the increment from p2p_connect_send() on failure */
3295                 dev->go_neg_req_sent--;
3296         }
3297
3298         if (!success &&
3299             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
3300             !is_zero_ether_addr(dev->member_in_go_dev)) {
3301                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
3302                         MAC2STR(dev->info.p2p_device_addr));
3303                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3304                 p2p_send_dev_disc_req(p2p, dev);
3305                 return;
3306         }
3307
3308         /*
3309          * Use P2P find, if needed, to find the other device from its listen
3310          * channel.
3311          */
3312         p2p_set_state(p2p, P2P_CONNECT);
3313         timeout = success ? 500000 : 100000;
3314         if (!success && p2p->go_neg_peer &&
3315             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
3316                 unsigned int r;
3317                 /*
3318                  * Peer is expected to wait our response and we will skip the
3319                  * listen phase. Add some randomness to the wait time here to
3320                  * make it less likely to hit cases where we could end up in
3321                  * sync with peer not listening.
3322                  */
3323                 if (os_get_random((u8 *) &r, sizeof(r)) < 0)
3324                         r = 0;
3325                 timeout += r % 100000;
3326         }
3327         p2p_set_timeout(p2p, 0, timeout);
3328 }
3329
3330
3331 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
3332 {
3333         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
3334                 success);
3335         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
3336                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
3337                 return;
3338         }
3339         p2p_set_state(p2p, P2P_CONNECT);
3340         p2p_set_timeout(p2p, 0, 500000);
3341 }
3342
3343
3344 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
3345                                        const u8 *addr)
3346 {
3347         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
3348         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
3349                 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status);
3350         } else if (success) {
3351                 struct p2p_device *dev;
3352                 dev = p2p_get_device(p2p, addr);
3353                 if (dev &&
3354                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
3355                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
3356         }
3357 }
3358
3359
3360 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
3361                                enum p2p_send_action_result result)
3362 {
3363         struct p2p_device *dev;
3364
3365         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
3366         if (result == P2P_SEND_ACTION_FAILED) {
3367                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3368                 p2p_go_neg_failed(p2p, -1);
3369                 return;
3370         }
3371
3372         dev = p2p->go_neg_peer;
3373
3374         if (result == P2P_SEND_ACTION_NO_ACK) {
3375                 /*
3376                  * Retry GO Negotiation Confirmation
3377                  * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive
3378                  * ACK for confirmation.
3379                  */
3380                 if (dev && dev->go_neg_conf &&
3381                     dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) {
3382                         p2p_dbg(p2p, "GO Negotiation Confirm retry %d",
3383                                 dev->go_neg_conf_sent);
3384                         p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM;
3385                         if (p2p_send_action(p2p, dev->go_neg_conf_freq,
3386                                             dev->info.p2p_device_addr,
3387                                             p2p->cfg->dev_addr,
3388                                             dev->info.p2p_device_addr,
3389                                             wpabuf_head(dev->go_neg_conf),
3390                                             wpabuf_len(dev->go_neg_conf), 0) >=
3391                             0) {
3392                                 dev->go_neg_conf_sent++;
3393                                 return;
3394                         }
3395                         p2p_dbg(p2p, "Failed to re-send Action frame");
3396
3397                         /*
3398                          * Continue with the assumption that the first attempt
3399                          * went through and just the ACK frame was lost.
3400                          */
3401                 }
3402
3403                 /*
3404                  * It looks like the TX status for GO Negotiation Confirm is
3405                  * often showing failure even when the peer has actually
3406                  * received the frame. Since the peer may change channels
3407                  * immediately after having received the frame, we may not see
3408                  * an Ack for retries, so just dropping a single frame may
3409                  * trigger this. To allow the group formation to succeed if the
3410                  * peer did indeed receive the frame, continue regardless of
3411                  * the TX status.
3412                  */
3413                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
3414         }
3415
3416         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3417
3418         if (dev == NULL)
3419                 return;
3420
3421         p2p_go_complete(p2p, dev);
3422 }
3423
3424
3425 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
3426                         const u8 *src, const u8 *bssid,
3427                         enum p2p_send_action_result result)
3428 {
3429         enum p2p_pending_action_state state;
3430         int success;
3431
3432         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
3433                 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)",
3434                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
3435                 MAC2STR(bssid), result, p2p_state_txt(p2p->state));
3436         success = result == P2P_SEND_ACTION_SUCCESS;
3437         state = p2p->pending_action_state;
3438         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3439         switch (state) {
3440         case P2P_NO_PENDING_ACTION:
3441                 if (p2p->send_action_in_progress) {
3442                         p2p->send_action_in_progress = 0;
3443                         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3444                 }
3445                 if (p2p->after_scan_tx_in_progress) {
3446                         p2p->after_scan_tx_in_progress = 0;
3447                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
3448                             p2p_run_after_scan(p2p))
3449                                 break;
3450                         if (p2p->state == P2P_SEARCH) {
3451                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
3452                                 p2p_continue_find(p2p);
3453                         }
3454                 }
3455                 break;
3456         case P2P_PENDING_GO_NEG_REQUEST:
3457                 p2p_go_neg_req_cb(p2p, success);
3458                 break;
3459         case P2P_PENDING_GO_NEG_RESPONSE:
3460                 p2p_go_neg_resp_cb(p2p, success);
3461                 break;
3462         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
3463                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
3464                 break;
3465         case P2P_PENDING_GO_NEG_CONFIRM:
3466                 p2p_go_neg_conf_cb(p2p, result);
3467                 break;
3468         case P2P_PENDING_SD:
3469                 p2p_sd_cb(p2p, success);
3470                 break;
3471         case P2P_PENDING_PD:
3472                 p2p_prov_disc_cb(p2p, success);
3473                 break;
3474         case P2P_PENDING_INVITATION_REQUEST:
3475                 p2p_invitation_req_cb(p2p, success);
3476                 break;
3477         case P2P_PENDING_INVITATION_RESPONSE:
3478                 p2p_invitation_resp_cb(p2p, success);
3479                 break;
3480         case P2P_PENDING_DEV_DISC_REQUEST:
3481                 p2p_dev_disc_req_cb(p2p, success);
3482                 break;
3483         case P2P_PENDING_DEV_DISC_RESPONSE:
3484                 p2p_dev_disc_resp_cb(p2p, success);
3485                 break;
3486         case P2P_PENDING_GO_DISC_REQ:
3487                 p2p_go_disc_req_cb(p2p, success);
3488                 break;
3489         }
3490
3491         p2p->after_scan_tx_in_progress = 0;
3492 }
3493
3494
3495 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3496                    unsigned int duration)
3497 {
3498         if (freq == p2p->pending_client_disc_freq) {
3499                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3500                 p2p->pending_client_disc_freq = 0;
3501                 return;
3502         }
3503
3504         if (freq != p2p->pending_listen_freq) {
3505                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3506                         freq, duration, p2p->pending_listen_freq);
3507                 return;
3508         }
3509
3510         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3511                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3512                 p2p->pending_listen_freq);
3513         p2p->in_listen = 1;
3514         p2p->drv_in_listen = freq;
3515         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3516                 /*
3517                  * Add 20 msec extra wait to avoid race condition with driver
3518                  * remain-on-channel end event, i.e., give driver more time to
3519                  * complete the operation before our timeout expires.
3520                  */
3521                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3522                                 p2p->pending_listen_usec + 20000);
3523         }
3524
3525         p2p->pending_listen_freq = 0;
3526 }
3527
3528
3529 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3530 {
3531         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3532         p2p->drv_in_listen = 0;
3533         if (p2p->in_listen)
3534                 return 0; /* Internal timeout will trigger the next step */
3535
3536         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3537                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3538                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3539                         p2p_go_neg_failed(p2p, -1);
3540                         return 0;
3541                 }
3542
3543                 p2p_set_state(p2p, P2P_CONNECT);
3544                 p2p_connect_send(p2p, p2p->go_neg_peer);
3545                 return 1;
3546         } else if (p2p->state == P2P_SEARCH) {
3547                 if (p2p->p2p_scan_running) {
3548                          /*
3549                           * Search is already in progress. This can happen if
3550                           * an Action frame RX is reported immediately after
3551                           * the end of a remain-on-channel operation and the
3552                           * response frame to that is sent using an offchannel
3553                           * operation while in p2p_find. Avoid an attempt to
3554                           * restart a scan here.
3555                           */
3556                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3557                         return 1;
3558                 }
3559                 if (p2p->pending_listen_freq) {
3560                         /*
3561                          * Better wait a bit if the driver is unable to start
3562                          * offchannel operation for some reason. p2p_search()
3563                          * will be started from internal timeout.
3564                          */
3565                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3566                         p2p_set_timeout(p2p, 0, 100000);
3567                         return 1;
3568                 }
3569                 if (p2p->search_delay) {
3570                         p2p_dbg(p2p, "Delay search operation by %u ms",
3571                                 p2p->search_delay);
3572                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3573                                         (p2p->search_delay % 1000) * 1000);
3574                         return 1;
3575                 }
3576                 p2p_search(p2p);
3577                 return 1;
3578         }
3579
3580         return 0;
3581 }
3582
3583
3584 static void p2p_timeout_connect(struct p2p_data *p2p)
3585 {
3586         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3587         if (p2p->go_neg_peer &&
3588             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3589                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3590                 p2p_go_neg_failed(p2p, -1);
3591                 return;
3592         }
3593         if (p2p->go_neg_peer &&
3594             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3595             p2p->go_neg_peer->connect_reqs < 120) {
3596                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3597                 p2p_connect_send(p2p, p2p->go_neg_peer);
3598                 return;
3599         }
3600         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3601                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3602                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3603                 p2p_set_timeout(p2p, 0, 30000);
3604                 return;
3605         }
3606         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3607         p2p_listen_in_find(p2p, 0);
3608 }
3609
3610
3611 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3612 {
3613         if (p2p->go_neg_peer) {
3614                 if (p2p->drv_in_listen) {
3615                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3616                         return;
3617                 }
3618
3619                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3620                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3621                         p2p_go_neg_failed(p2p, -1);
3622                         return;
3623                 }
3624
3625                 p2p_set_state(p2p, P2P_CONNECT);
3626                 p2p_connect_send(p2p, p2p->go_neg_peer);
3627         } else
3628                 p2p_set_state(p2p, P2P_IDLE);
3629 }
3630
3631
3632 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3633 {
3634         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3635
3636         if (p2p->cfg->is_concurrent_session_active &&
3637             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3638                 p2p_set_timeout(p2p, 0, 500000);
3639         else
3640                 p2p_set_timeout(p2p, 0, 200000);
3641 }
3642
3643
3644 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3645 {
3646         struct p2p_device *dev = p2p->go_neg_peer;
3647
3648         if (dev == NULL) {
3649                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3650                 return;
3651         }
3652
3653         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3654         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3655         p2p_listen_in_find(p2p, 0);
3656 }
3657
3658
3659 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3660 {
3661         p2p_dbg(p2p, "Service Discovery Query timeout");
3662         if (p2p->sd_peer) {
3663                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3664                 p2p->sd_peer = NULL;
3665         }
3666         p2p_continue_find(p2p);
3667 }
3668
3669
3670 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3671 {
3672         p2p_dbg(p2p, "Provision Discovery Request timeout");
3673         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3674         p2p_continue_find(p2p);
3675 }
3676
3677
3678 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3679 {
3680         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3681
3682         /*
3683          * For user initiated PD requests that we have not gotten any responses
3684          * for while in IDLE state, we retry them a couple of times before
3685          * giving up.
3686          */
3687         if (!p2p->user_initiated_pd)
3688                 return;
3689
3690         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3691
3692         if (p2p->pd_retries) {
3693                 p2p->pd_retries--;
3694                 p2p_retry_pd(p2p);
3695         } else {
3696                 struct p2p_device *dev;
3697                 int for_join = 0;
3698
3699                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3700                         if (os_memcmp(p2p->pending_pd_devaddr,
3701                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3702                                 continue;
3703                         if (dev->req_config_methods &&
3704                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3705                                 for_join = 1;
3706                 }
3707
3708                 if (p2p->cfg->prov_disc_fail)
3709                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3710                                                  p2p->pending_pd_devaddr,
3711                                                  for_join ?
3712                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3713                                                  P2P_PROV_DISC_TIMEOUT);
3714                 p2p_reset_pending_pd(p2p);
3715         }
3716 }
3717
3718
3719 static void p2p_timeout_invite(struct p2p_data *p2p)
3720 {
3721         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3722         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3723         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3724                 /*
3725                  * Better remain on operating channel instead of listen channel
3726                  * when running a group.
3727                  */
3728                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3729                 p2p_set_timeout(p2p, 0, 100000);
3730                 return;
3731         }
3732         p2p_listen_in_find(p2p, 0);
3733 }
3734
3735
3736 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3737 {
3738         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3739                 p2p_set_state(p2p, P2P_INVITE);
3740                 p2p_invite_send(p2p, p2p->invite_peer,
3741                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3742         } else {
3743                 if (p2p->invite_peer) {
3744                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3745                         if (p2p->cfg->invitation_result)
3746                                 p2p->cfg->invitation_result(
3747                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3748                                         p2p->invite_peer->info.p2p_device_addr,
3749                                         0, 0);
3750                 }
3751                 p2p_set_state(p2p, P2P_IDLE);
3752         }
3753 }
3754
3755
3756 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3757 {
3758         struct p2p_data *p2p = eloop_ctx;
3759
3760         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3761
3762         p2p->in_listen = 0;
3763         if (p2p->drv_in_listen) {
3764                 p2p_dbg(p2p, "Driver is still in listen state - stop it");
3765                 p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
3766         }
3767
3768         switch (p2p->state) {
3769         case P2P_IDLE:
3770                 /* Check if we timed out waiting for PD req */
3771                 if (p2p->pending_action_state == P2P_PENDING_PD)
3772                         p2p_timeout_prov_disc_req(p2p);
3773                 break;
3774         case P2P_SEARCH:
3775                 /* Check if we timed out waiting for PD req */
3776                 if (p2p->pending_action_state == P2P_PENDING_PD)
3777                         p2p_timeout_prov_disc_req(p2p);
3778                 if (p2p->search_delay && !p2p->in_search_delay) {
3779                         p2p_dbg(p2p, "Delay search operation by %u ms",
3780                                 p2p->search_delay);
3781                         p2p->in_search_delay = 1;
3782                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3783                                         (p2p->search_delay % 1000) * 1000);
3784                         break;
3785                 }
3786                 p2p->in_search_delay = 0;
3787                 p2p_search(p2p);
3788                 break;
3789         case P2P_CONNECT:
3790                 p2p_timeout_connect(p2p);
3791                 break;
3792         case P2P_CONNECT_LISTEN:
3793                 p2p_timeout_connect_listen(p2p);
3794                 break;
3795         case P2P_GO_NEG:
3796                 break;
3797         case P2P_LISTEN_ONLY:
3798                 /* Check if we timed out waiting for PD req */
3799                 if (p2p->pending_action_state == P2P_PENDING_PD)
3800                         p2p_timeout_prov_disc_req(p2p);
3801
3802                 if (p2p->ext_listen_only) {
3803                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3804                         p2p->ext_listen_only = 0;
3805                         p2p_set_state(p2p, P2P_IDLE);
3806                 }
3807                 break;
3808         case P2P_WAIT_PEER_CONNECT:
3809                 p2p_timeout_wait_peer_connect(p2p);
3810                 break;
3811         case P2P_WAIT_PEER_IDLE:
3812                 p2p_timeout_wait_peer_idle(p2p);
3813                 break;
3814         case P2P_SD_DURING_FIND:
3815                 p2p_timeout_sd_during_find(p2p);
3816                 break;
3817         case P2P_PROVISIONING:
3818                 break;
3819         case P2P_PD_DURING_FIND:
3820                 p2p_timeout_prov_disc_during_find(p2p);
3821                 break;
3822         case P2P_INVITE:
3823                 p2p_timeout_invite(p2p);
3824                 break;
3825         case P2P_INVITE_LISTEN:
3826                 p2p_timeout_invite_listen(p2p);
3827                 break;
3828         }
3829 }
3830
3831
3832 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3833 {
3834         struct p2p_device *dev;
3835
3836         dev = p2p_get_device(p2p, peer_addr);
3837         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3838                 MACSTR, MAC2STR(peer_addr));
3839         if (dev == NULL) {
3840                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3841                 return -1;
3842         }
3843         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3844         dev->flags |= P2P_DEV_USER_REJECTED;
3845         return 0;
3846 }
3847
3848
3849 const char * p2p_wps_method_text(enum p2p_wps_method method)
3850 {
3851         switch (method) {
3852         case WPS_NOT_READY:
3853                 return "not-ready";
3854         case WPS_PIN_DISPLAY:
3855                 return "Display";
3856         case WPS_PIN_KEYPAD:
3857                 return "Keypad";
3858         case WPS_PBC:
3859                 return "PBC";
3860         case WPS_NFC:
3861                 return "NFC";
3862         case WPS_P2PS:
3863                 return "P2PS";
3864         }
3865
3866         return "??";
3867 }
3868
3869
3870 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3871 {
3872         switch (go_state) {
3873         case UNKNOWN_GO:
3874                 return "unknown";
3875         case LOCAL_GO:
3876                 return "local";
3877         case  REMOTE_GO:
3878                 return "remote";
3879         }
3880
3881         return "??";
3882 }
3883
3884
3885 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3886                                                const u8 *addr, int next)
3887 {
3888         struct p2p_device *dev;
3889
3890         if (addr)
3891                 dev = p2p_get_device(p2p, addr);
3892         else
3893                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3894
3895         if (dev && next) {
3896                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3897                 if (&dev->list == &p2p->devices)
3898                         dev = NULL;
3899         }
3900
3901         if (dev == NULL)
3902                 return NULL;
3903
3904         return &dev->info;
3905 }
3906
3907
3908 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3909                           char *buf, size_t buflen)
3910 {
3911         struct p2p_device *dev;
3912         int res;
3913         char *pos, *end;
3914         struct os_reltime now;
3915
3916         if (info == NULL)
3917                 return -1;
3918
3919         dev = (struct p2p_device *) (((u8 *) info) -
3920                                      offsetof(struct p2p_device, info));
3921
3922         pos = buf;
3923         end = buf + buflen;
3924
3925         os_get_reltime(&now);
3926         res = os_snprintf(pos, end - pos,
3927                           "age=%d\n"
3928                           "listen_freq=%d\n"
3929                           "wps_method=%s\n"
3930                           "interface_addr=" MACSTR "\n"
3931                           "member_in_go_dev=" MACSTR "\n"
3932                           "member_in_go_iface=" MACSTR "\n"
3933                           "go_neg_req_sent=%d\n"
3934                           "go_state=%s\n"
3935                           "dialog_token=%u\n"
3936                           "intended_addr=" MACSTR "\n"
3937                           "country=%c%c\n"
3938                           "oper_freq=%d\n"
3939                           "req_config_methods=0x%x\n"
3940                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3941                           "status=%d\n"
3942                           "invitation_reqs=%u\n",
3943                           (int) (now.sec - dev->last_seen.sec),
3944                           dev->listen_freq,
3945                           p2p_wps_method_text(dev->wps_method),
3946                           MAC2STR(dev->interface_addr),
3947                           MAC2STR(dev->member_in_go_dev),
3948                           MAC2STR(dev->member_in_go_iface),
3949                           dev->go_neg_req_sent,
3950                           p2p_go_state_text(dev->go_state),
3951                           dev->dialog_token,
3952                           MAC2STR(dev->intended_addr),
3953                           dev->country[0] ? dev->country[0] : '_',
3954                           dev->country[1] ? dev->country[1] : '_',
3955                           dev->oper_freq,
3956                           dev->req_config_methods,
3957                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3958                           "[PROBE_REQ_ONLY]" : "",
3959                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3960                           dev->flags & P2P_DEV_NOT_YET_READY ?
3961                           "[NOT_YET_READY]" : "",
3962                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3963                           "[PD_PEER_DISPLAY]" : "",
3964                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3965                           "[PD_PEER_KEYPAD]" : "",
3966                           dev->flags & P2P_DEV_USER_REJECTED ?
3967                           "[USER_REJECTED]" : "",
3968                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3969                           "[PEER_WAITING_RESPONSE]" : "",
3970                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3971                           "[PREFER_PERSISTENT_GROUP]" : "",
3972                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3973                           "[WAIT_GO_NEG_RESPONSE]" : "",
3974                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3975                           "[WAIT_GO_NEG_CONFIRM]" : "",
3976                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3977                           "[GROUP_CLIENT_ONLY]" : "",
3978                           dev->flags & P2P_DEV_FORCE_FREQ ?
3979                           "[FORCE_FREQ]" : "",
3980                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3981                           "[PD_FOR_JOIN]" : "",
3982                           dev->status,
3983                           dev->invitation_reqs);
3984         if (os_snprintf_error(end - pos, res))
3985                 return pos - buf;
3986         pos += res;
3987
3988         if (dev->ext_listen_period) {
3989                 res = os_snprintf(pos, end - pos,
3990                                   "ext_listen_period=%u\n"
3991                                   "ext_listen_interval=%u\n",
3992                                   dev->ext_listen_period,
3993                                   dev->ext_listen_interval);
3994                 if (os_snprintf_error(end - pos, res))
3995                         return pos - buf;
3996                 pos += res;
3997         }
3998
3999         if (dev->oper_ssid_len) {
4000                 res = os_snprintf(pos, end - pos,
4001                                   "oper_ssid=%s\n",
4002                                   wpa_ssid_txt(dev->oper_ssid,
4003                                                dev->oper_ssid_len));
4004                 if (os_snprintf_error(end - pos, res))
4005                         return pos - buf;
4006                 pos += res;
4007         }
4008
4009 #ifdef CONFIG_WIFI_DISPLAY
4010         if (dev->info.wfd_subelems) {
4011                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
4012                 if (os_snprintf_error(end - pos, res))
4013                         return pos - buf;
4014                 pos += res;
4015
4016                 pos += wpa_snprintf_hex(pos, end - pos,
4017                                         wpabuf_head(dev->info.wfd_subelems),
4018                                         wpabuf_len(dev->info.wfd_subelems));
4019
4020                 res = os_snprintf(pos, end - pos, "\n");
4021                 if (os_snprintf_error(end - pos, res))
4022                         return pos - buf;
4023                 pos += res;
4024         }
4025 #endif /* CONFIG_WIFI_DISPLAY */
4026
4027         return pos - buf;
4028 }
4029
4030
4031 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
4032 {
4033         return p2p_get_device(p2p, addr) != NULL;
4034 }
4035
4036
4037 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
4038 {
4039         if (enabled) {
4040                 p2p_dbg(p2p, "Client discoverability enabled");
4041                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4042         } else {
4043                 p2p_dbg(p2p, "Client discoverability disabled");
4044                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
4045         }
4046 }
4047
4048
4049 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
4050                                               u32 duration2, u32 interval2)
4051 {
4052         struct wpabuf *req;
4053         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
4054         u8 *len;
4055
4056         req = wpabuf_alloc(100);
4057         if (req == NULL)
4058                 return NULL;
4059
4060         if (duration1 || interval1) {
4061                 os_memset(&desc1, 0, sizeof(desc1));
4062                 desc1.count_type = 1;
4063                 desc1.duration = duration1;
4064                 desc1.interval = interval1;
4065                 ptr1 = &desc1;
4066
4067                 if (duration2 || interval2) {
4068                         os_memset(&desc2, 0, sizeof(desc2));
4069                         desc2.count_type = 2;
4070                         desc2.duration = duration2;
4071                         desc2.interval = interval2;
4072                         ptr2 = &desc2;
4073                 }
4074         }
4075
4076         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
4077         len = p2p_buf_add_ie_hdr(req);
4078         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
4079         p2p_buf_update_ie_hdr(req, len);
4080
4081         return req;
4082 }
4083
4084
4085 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
4086                      const u8 *own_interface_addr, unsigned int freq,
4087                      u32 duration1, u32 interval1, u32 duration2,
4088                      u32 interval2)
4089 {
4090         struct wpabuf *req;
4091
4092         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
4093                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
4094                 "dur2=%u int2=%u",
4095                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
4096                 freq, duration1, interval1, duration2, interval2);
4097
4098         req = p2p_build_presence_req(duration1, interval1, duration2,
4099                                      interval2);
4100         if (req == NULL)
4101                 return -1;
4102
4103         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4104         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
4105                             go_interface_addr,
4106                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
4107                 p2p_dbg(p2p, "Failed to send Action frame");
4108         }
4109         wpabuf_free(req);
4110
4111         return 0;
4112 }
4113
4114
4115 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
4116                                                size_t noa_len, u8 dialog_token)
4117 {
4118         struct wpabuf *resp;
4119         u8 *len;
4120
4121         resp = wpabuf_alloc(100 + noa_len);
4122         if (resp == NULL)
4123                 return NULL;
4124
4125         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
4126         len = p2p_buf_add_ie_hdr(resp);
4127         p2p_buf_add_status(resp, status);
4128         if (noa) {
4129                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
4130                 wpabuf_put_le16(resp, noa_len);
4131                 wpabuf_put_data(resp, noa, noa_len);
4132         } else
4133                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
4134         p2p_buf_update_ie_hdr(resp, len);
4135
4136         return resp;
4137 }
4138
4139
4140 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
4141                                      const u8 *sa, const u8 *data, size_t len,
4142                                      int rx_freq)
4143 {
4144         struct p2p_message msg;
4145         u8 status;
4146         struct wpabuf *resp;
4147         size_t g;
4148         struct p2p_group *group = NULL;
4149         int parsed = 0;
4150         u8 noa[50];
4151         int noa_len;
4152
4153         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
4154
4155         for (g = 0; g < p2p->num_groups; g++) {
4156                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
4157                               ETH_ALEN) == 0) {
4158                         group = p2p->groups[g];
4159                         break;
4160                 }
4161         }
4162         if (group == NULL) {
4163                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
4164                         MACSTR, MAC2STR(da));
4165                 return;
4166         }
4167
4168         if (p2p_parse(data, len, &msg) < 0) {
4169                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
4170                 status = P2P_SC_FAIL_INVALID_PARAMS;
4171                 goto fail;
4172         }
4173         parsed = 1;
4174
4175         if (msg.noa == NULL) {
4176                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
4177                 status = P2P_SC_FAIL_INVALID_PARAMS;
4178                 goto fail;
4179         }
4180
4181         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
4182
4183 fail:
4184         if (p2p->cfg->get_noa)
4185                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
4186                                             sizeof(noa));
4187         else
4188                 noa_len = -1;
4189         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
4190                                        noa_len > 0 ? noa_len : 0,
4191                                        msg.dialog_token);
4192         if (parsed)
4193                 p2p_parse_free(&msg);
4194         if (resp == NULL)
4195                 return;
4196
4197         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
4198         if (p2p_send_action(p2p, rx_freq, sa, da, da,
4199                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
4200                 p2p_dbg(p2p, "Failed to send Action frame");
4201         }
4202         wpabuf_free(resp);
4203 }
4204
4205
4206 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
4207                                       const u8 *sa, const u8 *data, size_t len)
4208 {
4209         struct p2p_message msg;
4210
4211         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
4212
4213         if (p2p_parse(data, len, &msg) < 0) {
4214                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
4215                 return;
4216         }
4217
4218         if (msg.status == NULL || msg.noa == NULL) {
4219                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
4220                 p2p_parse_free(&msg);
4221                 return;
4222         }
4223
4224         if (p2p->cfg->presence_resp) {
4225                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
4226                                         msg.noa, msg.noa_len);
4227         }
4228
4229         if (*msg.status) {
4230                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
4231                         *msg.status);
4232                 p2p_parse_free(&msg);
4233                 return;
4234         }
4235
4236         p2p_dbg(p2p, "P2P Presence Request was accepted");
4237         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
4238                     msg.noa, msg.noa_len);
4239         /* TODO: process NoA */
4240         p2p_parse_free(&msg);
4241 }
4242
4243
4244 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4245 {
4246         struct p2p_data *p2p = eloop_ctx;
4247
4248         if (p2p->ext_listen_interval) {
4249                 /* Schedule next extended listen timeout */
4250                 eloop_register_timeout(p2p->ext_listen_interval_sec,
4251                                        p2p->ext_listen_interval_usec,
4252                                        p2p_ext_listen_timeout, p2p, NULL);
4253         }
4254
4255         if ((p2p->cfg->is_p2p_in_progress &&
4256              p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) ||
4257             (p2p->pending_action_state == P2P_PENDING_PD &&
4258              p2p->pd_retries > 0)) {
4259                 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)",
4260                         p2p_state_txt(p2p->state));
4261                 return;
4262         }
4263
4264         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
4265                 /*
4266                  * This should not really happen, but it looks like the Listen
4267                  * command may fail is something else (e.g., a scan) was
4268                  * running at an inconvenient time. As a workaround, allow new
4269                  * Extended Listen operation to be started.
4270                  */
4271                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
4272                 p2p->ext_listen_only = 0;
4273                 p2p_set_state(p2p, P2P_IDLE);
4274         }
4275
4276         if (p2p->state != P2P_IDLE) {
4277                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
4278                 return;
4279         }
4280
4281         p2p_dbg(p2p, "Extended Listen timeout");
4282         p2p->ext_listen_only = 1;
4283         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
4284                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
4285                 p2p->ext_listen_only = 0;
4286         }
4287 }
4288
4289
4290 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
4291                    unsigned int interval)
4292 {
4293         if (period > 65535 || interval > 65535 || period > interval ||
4294             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
4295                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
4296                         period, interval);
4297                 return -1;
4298         }
4299
4300         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
4301
4302         if (interval == 0) {
4303                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
4304                 p2p->ext_listen_period = 0;
4305                 p2p->ext_listen_interval = 0;
4306                 return 0;
4307         }
4308
4309         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
4310                 period, interval);
4311         p2p->ext_listen_period = period;
4312         p2p->ext_listen_interval = interval;
4313         p2p->ext_listen_interval_sec = interval / 1000;
4314         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
4315
4316         eloop_register_timeout(p2p->ext_listen_interval_sec,
4317                                p2p->ext_listen_interval_usec,
4318                                p2p_ext_listen_timeout, p2p, NULL);
4319
4320         return 0;
4321 }
4322
4323
4324 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4325                       const u8 *ie, size_t ie_len)
4326 {
4327         struct p2p_message msg;
4328
4329         if (bssid == NULL || ie == NULL)
4330                 return;
4331
4332         os_memset(&msg, 0, sizeof(msg));
4333         if (p2p_parse_ies(ie, ie_len, &msg))
4334                 return;
4335         if (msg.minor_reason_code == NULL) {
4336                 p2p_parse_free(&msg);
4337                 return;
4338         }
4339
4340         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
4341                 " reason_code=%u minor_reason_code=%u",
4342                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4343
4344         p2p_parse_free(&msg);
4345 }
4346
4347
4348 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
4349                         const u8 *ie, size_t ie_len)
4350 {
4351         struct p2p_message msg;
4352
4353         if (bssid == NULL || ie == NULL)
4354                 return;
4355
4356         os_memset(&msg, 0, sizeof(msg));
4357         if (p2p_parse_ies(ie, ie_len, &msg))
4358                 return;
4359         if (msg.minor_reason_code == NULL) {
4360                 p2p_parse_free(&msg);
4361                 return;
4362         }
4363
4364         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
4365                 " reason_code=%u minor_reason_code=%u",
4366                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
4367
4368         p2p_parse_free(&msg);
4369 }
4370
4371
4372 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
4373 {
4374         if (enabled) {
4375                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
4376                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
4377         } else {
4378                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
4379                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
4380         }
4381 }
4382
4383
4384 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class,
4385                                  u8 *op_channel)
4386 {
4387         return p2p_channel_random_social(&p2p->channels, op_class, op_channel);
4388 }
4389
4390
4391 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel,
4392                            u8 forced)
4393 {
4394         if (p2p_channel_to_freq(reg_class, channel) < 0)
4395                 return -1;
4396
4397         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
4398                 reg_class, channel);
4399
4400         /*
4401          * Listen channel was set in configuration or set by control interface;
4402          * cannot override it.
4403          */
4404         if (p2p->cfg->channel_forced && forced == 0)
4405                 return -1;
4406
4407         if (p2p->state == P2P_IDLE) {
4408                 p2p->cfg->reg_class = reg_class;
4409                 p2p->cfg->channel = channel;
4410                 p2p->cfg->channel_forced = forced;
4411         } else {
4412                 p2p_dbg(p2p, "Defer setting listen channel");
4413                 p2p->pending_reg_class = reg_class;
4414                 p2p->pending_channel = channel;
4415                 p2p->pending_channel_forced = forced;
4416         }
4417
4418         return 0;
4419 }
4420
4421
4422 u8 p2p_get_listen_channel(struct p2p_data *p2p)
4423 {
4424         return p2p->cfg->channel;
4425 }
4426
4427
4428 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
4429 {
4430         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
4431         if (postfix == NULL) {
4432                 p2p->cfg->ssid_postfix_len = 0;
4433                 return 0;
4434         }
4435         if (len > sizeof(p2p->cfg->ssid_postfix))
4436                 return -1;
4437         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
4438         p2p->cfg->ssid_postfix_len = len;
4439         return 0;
4440 }
4441
4442
4443 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
4444                          int cfg_op_channel)
4445 {
4446         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
4447                 return -1;
4448
4449         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
4450                 op_reg_class, op_channel);
4451         p2p->cfg->op_reg_class = op_reg_class;
4452         p2p->cfg->op_channel = op_channel;
4453         p2p->cfg->cfg_op_channel = cfg_op_channel;
4454         return 0;
4455 }
4456
4457
4458 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
4459                       const struct p2p_channel *pref_chan)
4460 {
4461         struct p2p_channel *n;
4462
4463         if (pref_chan) {
4464                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
4465                 if (n == NULL)
4466                         return -1;
4467                 os_memcpy(n, pref_chan,
4468                           num_pref_chan * sizeof(struct p2p_channel));
4469         } else
4470                 n = NULL;
4471
4472         os_free(p2p->cfg->pref_chan);
4473         p2p->cfg->pref_chan = n;
4474         p2p->cfg->num_pref_chan = num_pref_chan;
4475
4476         return 0;
4477 }
4478
4479
4480 int p2p_set_no_go_freq(struct p2p_data *p2p,
4481                        const struct wpa_freq_range_list *list)
4482 {
4483         struct wpa_freq_range *tmp;
4484
4485         if (list == NULL || list->num == 0) {
4486                 os_free(p2p->no_go_freq.range);
4487                 p2p->no_go_freq.range = NULL;
4488                 p2p->no_go_freq.num = 0;
4489                 return 0;
4490         }
4491
4492         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
4493         if (tmp == NULL)
4494                 return -1;
4495         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
4496         os_free(p2p->no_go_freq.range);
4497         p2p->no_go_freq.range = tmp;
4498         p2p->no_go_freq.num = list->num;
4499         p2p_dbg(p2p, "Updated no GO chan list");
4500
4501         return 0;
4502 }
4503
4504
4505 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4506                            u8 *iface_addr)
4507 {
4508         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4509         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4510                 return -1;
4511         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4512         return 0;
4513 }
4514
4515
4516 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4517                            u8 *dev_addr)
4518 {
4519         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4520         if (dev == NULL)
4521                 return -1;
4522         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4523         return 0;
4524 }
4525
4526
4527 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4528 {
4529         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4530         if (is_zero_ether_addr(p2p->peer_filter))
4531                 p2p_dbg(p2p, "Disable peer filter");
4532         else
4533                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4534                         MAC2STR(p2p->peer_filter));
4535 }
4536
4537
4538 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4539 {
4540         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4541         if (p2p->cross_connect == enabled)
4542                 return;
4543         p2p->cross_connect = enabled;
4544         /* TODO: may need to tear down any action group where we are GO(?) */
4545 }
4546
4547
4548 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4549 {
4550         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4551         if (dev == NULL)
4552                 return -1;
4553         if (dev->oper_freq <= 0)
4554                 return -1;
4555         return dev->oper_freq;
4556 }
4557
4558
4559 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4560 {
4561         p2p_dbg(p2p, "Intra BSS distribution %s",
4562                 enabled ? "enabled" : "disabled");
4563         p2p->cfg->p2p_intra_bss = enabled;
4564 }
4565
4566
4567 void p2p_update_channel_list(struct p2p_data *p2p,
4568                              const struct p2p_channels *chan,
4569                              const struct p2p_channels *cli_chan)
4570 {
4571         p2p_dbg(p2p, "Update channel list");
4572         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4573         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4574         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4575                   sizeof(struct p2p_channels));
4576         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4577 }
4578
4579
4580 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4581                     const u8 *src, const u8 *bssid, const u8 *buf,
4582                     size_t len, unsigned int wait_time)
4583 {
4584         if (p2p->p2p_scan_running) {
4585                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4586                 if (p2p->after_scan_tx) {
4587                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4588                         os_free(p2p->after_scan_tx);
4589                 }
4590                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4591                                                len);
4592                 if (p2p->after_scan_tx == NULL)
4593                         return -1;
4594                 p2p->after_scan_tx->freq = freq;
4595                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4596                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4597                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4598                 p2p->after_scan_tx->len = len;
4599                 p2p->after_scan_tx->wait_time = wait_time;
4600                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4601                 return 0;
4602         }
4603
4604         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4605                                      buf, len, wait_time);
4606 }
4607
4608
4609 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4610                            int freq_overall)
4611 {
4612         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4613                 freq_24, freq_5, freq_overall);
4614         p2p->best_freq_24 = freq_24;
4615         p2p->best_freq_5 = freq_5;
4616         p2p->best_freq_overall = freq_overall;
4617 }
4618
4619
4620 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4621 {
4622         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4623         p2p->own_freq_preference = freq;
4624 }
4625
4626
4627 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4628 {
4629         if (p2p == NULL || p2p->go_neg_peer == NULL)
4630                 return NULL;
4631         return p2p->go_neg_peer->info.p2p_device_addr;
4632 }
4633
4634
4635 const struct p2p_peer_info *
4636 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4637 {
4638         struct p2p_device *dev;
4639
4640         if (addr) {
4641                 dev = p2p_get_device(p2p, addr);
4642                 if (!dev)
4643                         return NULL;
4644
4645                 if (!next) {
4646                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4647                                 return NULL;
4648
4649                         return &dev->info;
4650                 } else {
4651                         do {
4652                                 dev = dl_list_first(&dev->list,
4653                                                     struct p2p_device,
4654                                                     list);
4655                                 if (!dev || &dev->list == &p2p->devices)
4656                                         return NULL;
4657                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4658                 }
4659         } else {
4660                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4661                 if (!dev)
4662                         return NULL;
4663                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4664                         dev = dl_list_first(&dev->list,
4665                                             struct p2p_device,
4666                                             list);
4667                         if (!dev || &dev->list == &p2p->devices)
4668                                 return NULL;
4669                 }
4670         }
4671
4672         return &dev->info;
4673 }
4674
4675
4676 int p2p_in_progress(struct p2p_data *p2p)
4677 {
4678         if (p2p == NULL)
4679                 return 0;
4680         if (p2p->state == P2P_SEARCH)
4681                 return 2;
4682         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4683 }
4684
4685
4686 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4687                             u8 client_timeout)
4688 {
4689         if (p2p) {
4690                 p2p->go_timeout = go_timeout;
4691                 p2p->client_timeout = client_timeout;
4692         }
4693 }
4694
4695
4696 #ifdef CONFIG_WIFI_DISPLAY
4697
4698 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4699 {
4700         size_t g;
4701         struct p2p_group *group;
4702
4703         for (g = 0; g < p2p->num_groups; g++) {
4704                 group = p2p->groups[g];
4705                 p2p_group_force_beacon_update_ies(group);
4706         }
4707 }
4708
4709
4710 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4711 {
4712         wpabuf_free(p2p->wfd_ie_beacon);
4713         p2p->wfd_ie_beacon = ie;
4714         p2p_update_wfd_ie_groups(p2p);
4715         return 0;
4716 }
4717
4718
4719 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4720 {
4721         wpabuf_free(p2p->wfd_ie_probe_req);
4722         p2p->wfd_ie_probe_req = ie;
4723         return 0;
4724 }
4725
4726
4727 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4728 {
4729         wpabuf_free(p2p->wfd_ie_probe_resp);
4730         p2p->wfd_ie_probe_resp = ie;
4731         p2p_update_wfd_ie_groups(p2p);
4732         return 0;
4733 }
4734
4735
4736 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4737 {
4738         wpabuf_free(p2p->wfd_ie_assoc_req);
4739         p2p->wfd_ie_assoc_req = ie;
4740         return 0;
4741 }
4742
4743
4744 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4745 {
4746         wpabuf_free(p2p->wfd_ie_invitation);
4747         p2p->wfd_ie_invitation = ie;
4748         return 0;
4749 }
4750
4751
4752 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4753 {
4754         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4755         p2p->wfd_ie_prov_disc_req = ie;
4756         return 0;
4757 }
4758
4759
4760 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4761 {
4762         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4763         p2p->wfd_ie_prov_disc_resp = ie;
4764         return 0;
4765 }
4766
4767
4768 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4769 {
4770         wpabuf_free(p2p->wfd_ie_go_neg);
4771         p2p->wfd_ie_go_neg = ie;
4772         return 0;
4773 }
4774
4775
4776 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4777 {
4778         wpabuf_free(p2p->wfd_dev_info);
4779         if (elem) {
4780                 p2p->wfd_dev_info = wpabuf_dup(elem);
4781                 if (p2p->wfd_dev_info == NULL)
4782                         return -1;
4783         } else
4784                 p2p->wfd_dev_info = NULL;
4785
4786         return 0;
4787 }
4788
4789
4790 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4791 {
4792         wpabuf_free(p2p->wfd_assoc_bssid);
4793         if (elem) {
4794                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4795                 if (p2p->wfd_assoc_bssid == NULL)
4796                         return -1;
4797         } else
4798                 p2p->wfd_assoc_bssid = NULL;
4799
4800         return 0;
4801 }
4802
4803
4804 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4805                                   const struct wpabuf *elem)
4806 {
4807         wpabuf_free(p2p->wfd_coupled_sink_info);
4808         if (elem) {
4809                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4810                 if (p2p->wfd_coupled_sink_info == NULL)
4811                         return -1;
4812         } else
4813                 p2p->wfd_coupled_sink_info = NULL;
4814
4815         return 0;
4816 }
4817
4818 #endif /* CONFIG_WIFI_DISPLAY */
4819
4820
4821 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4822                      int max_disc_tu)
4823 {
4824         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4825                 return -1;
4826
4827         p2p->min_disc_int = min_disc_int;
4828         p2p->max_disc_int = max_disc_int;
4829         p2p->max_disc_tu = max_disc_tu;
4830         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4831                 min_disc_int, max_disc_int, max_disc_tu);
4832
4833         return 0;
4834 }
4835
4836
4837 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4838 {
4839         va_list ap;
4840         char buf[500];
4841
4842         if (!p2p->cfg->debug_print)
4843                 return;
4844
4845         va_start(ap, fmt);
4846         vsnprintf(buf, sizeof(buf), fmt, ap);
4847         buf[sizeof(buf) - 1] = '\0';
4848         va_end(ap);
4849         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4850 }
4851
4852
4853 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4854 {
4855         va_list ap;
4856         char buf[500];
4857
4858         if (!p2p->cfg->debug_print)
4859                 return;
4860
4861         va_start(ap, fmt);
4862         vsnprintf(buf, sizeof(buf), fmt, ap);
4863         buf[sizeof(buf) - 1] = '\0';
4864         va_end(ap);
4865         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4866 }
4867
4868
4869 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4870 {
4871         va_list ap;
4872         char buf[500];
4873
4874         if (!p2p->cfg->debug_print)
4875                 return;
4876
4877         va_start(ap, fmt);
4878         vsnprintf(buf, sizeof(buf), fmt, ap);
4879         buf[sizeof(buf) - 1] = '\0';
4880         va_end(ap);
4881         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4882 }
4883
4884
4885 void p2p_loop_on_known_peers(struct p2p_data *p2p,
4886                              void (*peer_callback)(struct p2p_peer_info *peer,
4887                                                    void *user_data),
4888                              void *user_data)
4889 {
4890         struct p2p_device *dev, *n;
4891
4892         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
4893                 peer_callback(&dev->info, user_data);
4894         }
4895 }
4896
4897
4898 #ifdef CONFIG_WPS_NFC
4899
4900 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4901                                               int client_freq,
4902                                               const u8 *go_dev_addr,
4903                                               const u8 *ssid, size_t ssid_len)
4904 {
4905         struct wpabuf *buf;
4906         u8 op_class, channel;
4907         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4908
4909         buf = wpabuf_alloc(1000);
4910         if (buf == NULL)
4911                 return NULL;
4912
4913         op_class = p2p->cfg->reg_class;
4914         channel = p2p->cfg->channel;
4915
4916         p2p_buf_add_capability(buf, p2p->dev_capab &
4917                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4918         p2p_buf_add_device_info(buf, p2p, NULL);
4919
4920         if (p2p->num_groups > 0) {
4921                 int freq = p2p_group_get_freq(p2p->groups[0]);
4922                 role = P2P_GO_IN_A_GROUP;
4923                 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) {
4924                         p2p_dbg(p2p,
4925                                 "Unknown GO operating frequency %d MHz for NFC handover",
4926                                 freq);
4927                         wpabuf_free(buf);
4928                         return NULL;
4929                 }
4930         } else if (client_freq > 0) {
4931                 role = P2P_CLIENT_IN_A_GROUP;
4932                 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) {
4933                         p2p_dbg(p2p,
4934                                 "Unknown client operating frequency %d MHz for NFC handover",
4935                                 client_freq);
4936                         wpabuf_free(buf);
4937                         return NULL;
4938                 }
4939         }
4940
4941         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4942                                        channel, role);
4943
4944         if (p2p->num_groups > 0) {
4945                 /* Limit number of clients to avoid very long message */
4946                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4947                 p2p_group_buf_add_id(p2p->groups[0], buf);
4948         } else if (client_freq > 0 &&
4949                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4950                    ssid && ssid_len > 0) {
4951                 /*
4952                  * Add the optional P2P Group ID to indicate in which group this
4953                  * device is a P2P Client.
4954                  */
4955                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4956         }
4957
4958         return buf;
4959 }
4960
4961
4962 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4963                                            int client_freq,
4964                                            const u8 *go_dev_addr,
4965                                            const u8 *ssid, size_t ssid_len)
4966 {
4967         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4968                                       ssid_len);
4969 }
4970
4971
4972 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4973                                            int client_freq,
4974                                            const u8 *go_dev_addr,
4975                                            const u8 *ssid, size_t ssid_len)
4976 {
4977         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4978                                       ssid_len);
4979 }
4980
4981
4982 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4983                                         struct p2p_nfc_params *params)
4984 {
4985         struct p2p_message msg;
4986         struct p2p_device *dev;
4987         const u8 *p2p_dev_addr;
4988         int freq;
4989         enum p2p_role_indication role;
4990
4991         params->next_step = NO_ACTION;
4992
4993         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4994                                    params->p2p_attr, params->p2p_len, &msg)) {
4995                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4996                 p2p_parse_free(&msg);
4997                 return -1;
4998         }
4999
5000         if (msg.p2p_device_addr)
5001                 p2p_dev_addr = msg.p2p_device_addr;
5002         else if (msg.device_id)
5003                 p2p_dev_addr = msg.device_id;
5004         else {
5005                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
5006                 p2p_parse_free(&msg);
5007                 return -1;
5008         }
5009
5010         if (msg.oob_dev_password) {
5011                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
5012                           msg.oob_dev_password_len);
5013                 params->oob_dev_pw_len = msg.oob_dev_password_len;
5014         }
5015
5016         dev = p2p_create_device(p2p, p2p_dev_addr);
5017         if (dev == NULL) {
5018                 p2p_parse_free(&msg);
5019                 return -1;
5020         }
5021
5022         params->peer = &dev->info;
5023
5024         os_get_reltime(&dev->last_seen);
5025         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
5026         p2p_copy_wps_info(p2p, dev, 0, &msg);
5027
5028         if (!msg.oob_go_neg_channel) {
5029                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
5030                 return -1;
5031         }
5032
5033         if (msg.oob_go_neg_channel[3] == 0 &&
5034             msg.oob_go_neg_channel[4] == 0)
5035                 freq = 0;
5036         else
5037                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
5038                                            msg.oob_go_neg_channel[4]);
5039         if (freq < 0) {
5040                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
5041                 return -1;
5042         }
5043         role = msg.oob_go_neg_channel[5];
5044
5045         if (role == P2P_GO_IN_A_GROUP) {
5046                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
5047                 params->go_freq = freq;
5048         } else if (role == P2P_CLIENT_IN_A_GROUP) {
5049                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
5050                         freq);
5051                 params->go_freq = freq;
5052         } else
5053                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
5054         dev->oob_go_neg_freq = freq;
5055
5056         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
5057                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
5058                                            p2p->cfg->channel);
5059                 if (freq < 0) {
5060                         p2p_dbg(p2p, "Own listen channel not known");
5061                         return -1;
5062                 }
5063                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
5064                 dev->oob_go_neg_freq = freq;
5065         }
5066
5067         if (msg.group_id) {
5068                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
5069                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
5070                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
5071                           params->go_ssid_len);
5072         }
5073
5074         if (dev->flags & P2P_DEV_USER_REJECTED) {
5075                 p2p_dbg(p2p, "Do not report rejected device");
5076                 p2p_parse_free(&msg);
5077                 return 0;
5078         }
5079
5080         if (!(dev->flags & P2P_DEV_REPORTED)) {
5081                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
5082                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
5083                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
5084         }
5085         p2p_parse_free(&msg);
5086
5087         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
5088                 params->next_step = BOTH_GO;
5089         else if (role == P2P_GO_IN_A_GROUP)
5090                 params->next_step = JOIN_GROUP;
5091         else if (role == P2P_CLIENT_IN_A_GROUP) {
5092                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
5093                 params->next_step = PEER_CLIENT;
5094         } else if (p2p->num_groups > 0)
5095                 params->next_step = AUTH_JOIN;
5096         else if (params->sel)
5097                 params->next_step = INIT_GO_NEG;
5098         else
5099                 params->next_step = RESP_GO_NEG;
5100
5101         return 0;
5102 }
5103
5104
5105 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
5106                                       int go_intent,
5107                                       const u8 *own_interface_addr)
5108 {
5109
5110         p2p->authorized_oob_dev_pw_id = dev_pw_id;
5111         if (dev_pw_id == 0) {
5112                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
5113                 return;
5114         }
5115
5116         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
5117                 dev_pw_id);
5118
5119         p2p->go_intent = go_intent;
5120         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
5121 }
5122
5123 #endif /* CONFIG_WPS_NFC */
5124
5125
5126 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len)
5127 {
5128         if (len < 8 || len > 63)
5129                 return -1;
5130         p2p->cfg->passphrase_len = len;
5131         return 0;
5132 }
5133
5134
5135 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem)
5136 {
5137         p2p->vendor_elem = vendor_elem;
5138 }
5139
5140
5141 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx)
5142 {
5143         struct p2p_data *p2p = eloop_ctx;
5144
5145         p2p_dbg(p2p,
5146                 "Timeout on waiting peer to become ready for GO Negotiation");
5147         p2p_go_neg_failed(p2p, -1);
5148 }