1 /* 2 * Wi-Fi Direct - P2P module 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/defs.h" 14 #include "common/ieee802_11_defs.h" 15 #include "common/ieee802_11_common.h" 16 #include "common/wpa_ctrl.h" 17 #include "crypto/sha256.h" 18 #include "crypto/crypto.h" 19 #include "wps/wps_i.h" 20 #include "p2p_i.h" 21 #include "p2p.h" 22 23 24 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx); 25 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev); 26 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 27 const u8 *sa, const u8 *data, size_t len, 28 int rx_freq); 29 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 30 const u8 *sa, const u8 *data, 31 size_t len); 32 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx); 33 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx); 34 35 36 /* 37 * p2p_scan recovery timeout 38 * 39 * Many drivers are using 30 second timeout on scan results. Allow a bit larger 40 * timeout for this to avoid hitting P2P timeout unnecessarily. 41 */ 42 #define P2P_SCAN_TIMEOUT 35 43 44 /** 45 * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer 46 * entries will be removed 47 */ 48 #ifndef P2P_PEER_EXPIRATION_AGE 49 #define P2P_PEER_EXPIRATION_AGE 60 50 #endif /* P2P_PEER_EXPIRATION_AGE */ 51 52 53 void p2p_expire_peers(struct p2p_data *p2p) 54 { 55 struct p2p_device *dev, *n; 56 struct os_reltime now; 57 size_t i; 58 59 os_get_reltime(&now); 60 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 61 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec) 62 continue; 63 64 if (dev == p2p->go_neg_peer) { 65 /* 66 * GO Negotiation is in progress with the peer, so 67 * don't expire the peer entry until GO Negotiation 68 * fails or times out. 69 */ 70 continue; 71 } 72 73 if (p2p->cfg->go_connected && 74 p2p->cfg->go_connected(p2p->cfg->cb_ctx, 75 dev->info.p2p_device_addr)) { 76 /* 77 * We are connected as a client to a group in which the 78 * peer is the GO, so do not expire the peer entry. 79 */ 80 os_get_reltime(&dev->last_seen); 81 continue; 82 } 83 84 for (i = 0; i < p2p->num_groups; i++) { 85 if (p2p_group_is_client_connected( 86 p2p->groups[i], dev->info.p2p_device_addr)) 87 break; 88 } 89 if (i < p2p->num_groups) { 90 /* 91 * The peer is connected as a client in a group where 92 * we are the GO, so do not expire the peer entry. 93 */ 94 os_get_reltime(&dev->last_seen); 95 continue; 96 } 97 98 p2p_dbg(p2p, "Expiring old peer entry " MACSTR, 99 MAC2STR(dev->info.p2p_device_addr)); 100 dl_list_del(&dev->list); 101 p2p_device_free(p2p, dev); 102 } 103 } 104 105 106 static const char * p2p_state_txt(int state) 107 { 108 switch (state) { 109 case P2P_IDLE: 110 return "IDLE"; 111 case P2P_SEARCH: 112 return "SEARCH"; 113 case P2P_CONNECT: 114 return "CONNECT"; 115 case P2P_CONNECT_LISTEN: 116 return "CONNECT_LISTEN"; 117 case P2P_GO_NEG: 118 return "GO_NEG"; 119 case P2P_LISTEN_ONLY: 120 return "LISTEN_ONLY"; 121 case P2P_WAIT_PEER_CONNECT: 122 return "WAIT_PEER_CONNECT"; 123 case P2P_WAIT_PEER_IDLE: 124 return "WAIT_PEER_IDLE"; 125 case P2P_SD_DURING_FIND: 126 return "SD_DURING_FIND"; 127 case P2P_PROVISIONING: 128 return "PROVISIONING"; 129 case P2P_PD_DURING_FIND: 130 return "PD_DURING_FIND"; 131 case P2P_INVITE: 132 return "INVITE"; 133 case P2P_INVITE_LISTEN: 134 return "INVITE_LISTEN"; 135 default: 136 return "?"; 137 } 138 } 139 140 141 const char * p2p_get_state_txt(struct p2p_data *p2p) 142 { 143 return p2p_state_txt(p2p->state); 144 } 145 146 147 struct p2ps_advertisement * p2p_get_p2ps_adv_list(struct p2p_data *p2p) 148 { 149 return p2p ? p2p->p2ps_adv_list : NULL; 150 } 151 152 153 void p2p_set_intended_addr(struct p2p_data *p2p, const u8 *intended_addr) 154 { 155 if (p2p && intended_addr) 156 os_memcpy(p2p->intended_addr, intended_addr, ETH_ALEN); 157 } 158 159 160 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr) 161 { 162 struct p2p_device *dev = NULL; 163 164 if (!addr || !p2p) 165 return 0; 166 167 dev = p2p_get_device(p2p, addr); 168 if (dev) 169 return dev->wps_prov_info; 170 else 171 return 0; 172 } 173 174 175 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr) 176 { 177 struct p2p_device *dev = NULL; 178 179 if (!addr || !p2p) 180 return; 181 182 dev = p2p_get_device(p2p, addr); 183 if (dev) 184 dev->wps_prov_info = 0; 185 } 186 187 188 void p2p_set_state(struct p2p_data *p2p, int new_state) 189 { 190 p2p_dbg(p2p, "State %s -> %s", 191 p2p_state_txt(p2p->state), p2p_state_txt(new_state)); 192 p2p->state = new_state; 193 194 if (new_state == P2P_IDLE && p2p->pending_channel) { 195 p2p_dbg(p2p, "Apply change in listen channel"); 196 p2p->cfg->reg_class = p2p->pending_reg_class; 197 p2p->cfg->channel = p2p->pending_channel; 198 p2p->pending_reg_class = 0; 199 p2p->pending_channel = 0; 200 } 201 } 202 203 204 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec) 205 { 206 p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec", 207 p2p_state_txt(p2p->state), sec, usec); 208 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 209 eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL); 210 } 211 212 213 void p2p_clear_timeout(struct p2p_data *p2p) 214 { 215 p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state)); 216 eloop_cancel_timeout(p2p_state_timeout, p2p, NULL); 217 } 218 219 220 void p2p_go_neg_failed(struct p2p_data *p2p, int status) 221 { 222 struct p2p_go_neg_results res; 223 struct p2p_device *peer = p2p->go_neg_peer; 224 225 if (!peer) 226 return; 227 228 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 229 if (p2p->state != P2P_SEARCH) { 230 /* 231 * Clear timeouts related to GO Negotiation if no new p2p_find 232 * has been started. 233 */ 234 p2p_clear_timeout(p2p); 235 p2p_set_state(p2p, P2P_IDLE); 236 } 237 238 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 239 peer->wps_method = WPS_NOT_READY; 240 peer->oob_pw_id = 0; 241 wpabuf_free(peer->go_neg_conf); 242 peer->go_neg_conf = NULL; 243 p2p->go_neg_peer = NULL; 244 245 os_memset(&res, 0, sizeof(res)); 246 res.status = status; 247 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 248 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 249 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 250 } 251 252 253 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc) 254 { 255 unsigned int r, tu; 256 int freq; 257 struct wpabuf *ies; 258 259 p2p_dbg(p2p, "Starting short listen state (state=%s)", 260 p2p_state_txt(p2p->state)); 261 262 if (p2p->pending_listen_freq) { 263 /* We have a pending p2p_listen request */ 264 p2p_dbg(p2p, "p2p_listen command pending already"); 265 return; 266 } 267 268 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 269 if (freq < 0) { 270 p2p_dbg(p2p, "Unknown regulatory class/channel"); 271 return; 272 } 273 274 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 275 r = 0; 276 tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) + 277 p2p->min_disc_int) * 100; 278 if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu) 279 tu = p2p->max_disc_tu; 280 if (!dev_disc && tu < 100) 281 tu = 100; /* Need to wait in non-device discovery use cases */ 282 if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen) 283 tu = p2p->cfg->max_listen * 1000 / 1024; 284 285 if (tu == 0) { 286 p2p_dbg(p2p, "Skip listen state since duration was 0 TU"); 287 p2p_set_timeout(p2p, 0, 0); 288 return; 289 } 290 291 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 292 if (ies == NULL) 293 return; 294 295 p2p->pending_listen_freq = freq; 296 p2p->pending_listen_sec = 0; 297 p2p->pending_listen_usec = 1024 * tu; 298 299 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000, 300 ies) < 0) { 301 p2p_dbg(p2p, "Failed to start listen mode"); 302 p2p->pending_listen_freq = 0; 303 } 304 wpabuf_free(ies); 305 } 306 307 308 int p2p_listen(struct p2p_data *p2p, unsigned int timeout) 309 { 310 int freq; 311 struct wpabuf *ies; 312 313 p2p_dbg(p2p, "Going to listen(only) state"); 314 315 if (p2p->pending_listen_freq) { 316 /* We have a pending p2p_listen request */ 317 p2p_dbg(p2p, "p2p_listen command pending already"); 318 return -1; 319 } 320 321 freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); 322 if (freq < 0) { 323 p2p_dbg(p2p, "Unknown regulatory class/channel"); 324 return -1; 325 } 326 327 p2p->pending_listen_sec = timeout / 1000; 328 p2p->pending_listen_usec = (timeout % 1000) * 1000; 329 330 if (p2p->p2p_scan_running) { 331 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) { 332 p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen"); 333 return 0; 334 } 335 p2p_dbg(p2p, "p2p_scan running - delay start of listen state"); 336 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN; 337 return 0; 338 } 339 340 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 341 if (ies == NULL) 342 return -1; 343 344 p2p->pending_listen_freq = freq; 345 346 if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) { 347 p2p_dbg(p2p, "Failed to start listen mode"); 348 p2p->pending_listen_freq = 0; 349 wpabuf_free(ies); 350 return -1; 351 } 352 wpabuf_free(ies); 353 354 p2p_set_state(p2p, P2P_LISTEN_ONLY); 355 356 return 0; 357 } 358 359 360 static void p2p_device_clear_reported(struct p2p_data *p2p) 361 { 362 struct p2p_device *dev; 363 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 364 dev->flags &= ~P2P_DEV_REPORTED; 365 dev->sd_reqs = 0; 366 } 367 } 368 369 370 /** 371 * p2p_get_device - Fetch a peer entry 372 * @p2p: P2P module context from p2p_init() 373 * @addr: P2P Device Address of the peer 374 * Returns: Pointer to the device entry or %NULL if not found 375 */ 376 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr) 377 { 378 struct p2p_device *dev; 379 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 380 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0) 381 return dev; 382 } 383 return NULL; 384 } 385 386 387 /** 388 * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address 389 * @p2p: P2P module context from p2p_init() 390 * @addr: P2P Interface Address of the peer 391 * Returns: Pointer to the device entry or %NULL if not found 392 */ 393 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p, 394 const u8 *addr) 395 { 396 struct p2p_device *dev; 397 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 398 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0) 399 return dev; 400 } 401 return NULL; 402 } 403 404 405 /** 406 * p2p_create_device - Create a peer entry 407 * @p2p: P2P module context from p2p_init() 408 * @addr: P2P Device Address of the peer 409 * Returns: Pointer to the device entry or %NULL on failure 410 * 411 * If there is already an entry for the peer, it will be returned instead of 412 * creating a new one. 413 */ 414 static struct p2p_device * p2p_create_device(struct p2p_data *p2p, 415 const u8 *addr) 416 { 417 struct p2p_device *dev, *oldest = NULL; 418 size_t count = 0; 419 420 dev = p2p_get_device(p2p, addr); 421 if (dev) 422 return dev; 423 424 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 425 count++; 426 if (oldest == NULL || 427 os_reltime_before(&dev->last_seen, &oldest->last_seen)) 428 oldest = dev; 429 } 430 if (count + 1 > p2p->cfg->max_peers && oldest) { 431 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer"); 432 dl_list_del(&oldest->list); 433 p2p_device_free(p2p, oldest); 434 } 435 436 dev = os_zalloc(sizeof(*dev)); 437 if (dev == NULL) 438 return NULL; 439 dl_list_add(&p2p->devices, &dev->list); 440 os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN); 441 442 return dev; 443 } 444 445 446 static void p2p_copy_client_info(struct p2p_device *dev, 447 struct p2p_client_info *cli) 448 { 449 p2p_copy_filter_devname(dev->info.device_name, 450 sizeof(dev->info.device_name), 451 cli->dev_name, cli->dev_name_len); 452 dev->info.dev_capab = cli->dev_capab; 453 dev->info.config_methods = cli->config_methods; 454 os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8); 455 dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types; 456 os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types, 457 dev->info.wps_sec_dev_type_list_len); 458 } 459 460 461 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr, 462 const u8 *go_interface_addr, int freq, 463 const u8 *gi, size_t gi_len, 464 struct os_reltime *rx_time) 465 { 466 struct p2p_group_info info; 467 size_t c; 468 struct p2p_device *dev; 469 470 if (gi == NULL) 471 return 0; 472 473 if (p2p_group_info_parse(gi, gi_len, &info) < 0) 474 return -1; 475 476 /* 477 * Clear old data for this group; if the devices are still in the 478 * group, the information will be restored in the loop following this. 479 */ 480 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 481 if (os_memcmp(dev->member_in_go_iface, go_interface_addr, 482 ETH_ALEN) == 0) { 483 os_memset(dev->member_in_go_iface, 0, ETH_ALEN); 484 os_memset(dev->member_in_go_dev, 0, ETH_ALEN); 485 } 486 } 487 488 for (c = 0; c < info.num_clients; c++) { 489 struct p2p_client_info *cli = &info.client[c]; 490 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr, 491 ETH_ALEN) == 0) 492 continue; /* ignore our own entry */ 493 dev = p2p_get_device(p2p, cli->p2p_device_addr); 494 if (dev) { 495 if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY | 496 P2P_DEV_PROBE_REQ_ONLY)) { 497 /* 498 * Update information since we have not 499 * received this directly from the client. 500 */ 501 p2p_copy_client_info(dev, cli); 502 } else { 503 /* 504 * Need to update P2P Client Discoverability 505 * flag since it is valid only in P2P Group 506 * Info attribute. 507 */ 508 dev->info.dev_capab &= 509 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 510 dev->info.dev_capab |= 511 cli->dev_capab & 512 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 513 } 514 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 515 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 516 } 517 } else { 518 dev = p2p_create_device(p2p, cli->p2p_device_addr); 519 if (dev == NULL) 520 continue; 521 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 522 p2p_copy_client_info(dev, cli); 523 dev->oper_freq = freq; 524 p2p->cfg->dev_found(p2p->cfg->cb_ctx, 525 dev->info.p2p_device_addr, 526 &dev->info, 1); 527 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 528 } 529 530 os_memcpy(dev->interface_addr, cli->p2p_interface_addr, 531 ETH_ALEN); 532 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 533 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN); 534 os_memcpy(dev->member_in_go_iface, go_interface_addr, 535 ETH_ALEN); 536 dev->flags |= P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT; 537 } 538 539 return 0; 540 } 541 542 543 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev, 544 int probe_req, const struct p2p_message *msg) 545 { 546 os_memcpy(dev->info.device_name, msg->device_name, 547 sizeof(dev->info.device_name)); 548 549 if (msg->manufacturer && 550 msg->manufacturer_len < sizeof(dev->info.manufacturer)) { 551 os_memset(dev->info.manufacturer, 0, 552 sizeof(dev->info.manufacturer)); 553 os_memcpy(dev->info.manufacturer, msg->manufacturer, 554 msg->manufacturer_len); 555 } 556 557 if (msg->model_name && 558 msg->model_name_len < sizeof(dev->info.model_name)) { 559 os_memset(dev->info.model_name, 0, 560 sizeof(dev->info.model_name)); 561 os_memcpy(dev->info.model_name, msg->model_name, 562 msg->model_name_len); 563 } 564 565 if (msg->model_number && 566 msg->model_number_len < sizeof(dev->info.model_number)) { 567 os_memset(dev->info.model_number, 0, 568 sizeof(dev->info.model_number)); 569 os_memcpy(dev->info.model_number, msg->model_number, 570 msg->model_number_len); 571 } 572 573 if (msg->serial_number && 574 msg->serial_number_len < sizeof(dev->info.serial_number)) { 575 os_memset(dev->info.serial_number, 0, 576 sizeof(dev->info.serial_number)); 577 os_memcpy(dev->info.serial_number, msg->serial_number, 578 msg->serial_number_len); 579 } 580 581 if (msg->pri_dev_type) 582 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type, 583 sizeof(dev->info.pri_dev_type)); 584 else if (msg->wps_pri_dev_type) 585 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type, 586 sizeof(dev->info.pri_dev_type)); 587 588 if (msg->wps_sec_dev_type_list) { 589 os_memcpy(dev->info.wps_sec_dev_type_list, 590 msg->wps_sec_dev_type_list, 591 msg->wps_sec_dev_type_list_len); 592 dev->info.wps_sec_dev_type_list_len = 593 msg->wps_sec_dev_type_list_len; 594 } 595 596 if (msg->capability) { 597 /* 598 * P2P Client Discoverability bit is reserved in all frames 599 * that use this function, so do not change its value here. 600 */ 601 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 602 dev->info.dev_capab |= msg->capability[0] & 603 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 604 dev->info.group_capab = msg->capability[1]; 605 } 606 607 if (msg->ext_listen_timing) { 608 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing); 609 dev->ext_listen_interval = 610 WPA_GET_LE16(msg->ext_listen_timing + 2); 611 } 612 613 if (!probe_req) { 614 u16 new_config_methods; 615 new_config_methods = msg->config_methods ? 616 msg->config_methods : msg->wps_config_methods; 617 if (new_config_methods && 618 dev->info.config_methods != new_config_methods) { 619 p2p_dbg(p2p, "Update peer " MACSTR 620 " config_methods 0x%x -> 0x%x", 621 MAC2STR(dev->info.p2p_device_addr), 622 dev->info.config_methods, 623 new_config_methods); 624 dev->info.config_methods = new_config_methods; 625 } 626 } 627 } 628 629 630 static void p2p_update_peer_vendor_elems(struct p2p_device *dev, const u8 *ies, 631 size_t ies_len) 632 { 633 const u8 *pos, *end; 634 u8 id, len; 635 636 wpabuf_free(dev->info.vendor_elems); 637 dev->info.vendor_elems = NULL; 638 639 end = ies + ies_len; 640 641 for (pos = ies; end - pos > 1; pos += len) { 642 id = *pos++; 643 len = *pos++; 644 645 if (len > end - pos) 646 break; 647 648 if (id != WLAN_EID_VENDOR_SPECIFIC || len < 3) 649 continue; 650 651 if (len >= 4) { 652 u32 type = WPA_GET_BE32(pos); 653 654 if (type == WPA_IE_VENDOR_TYPE || 655 type == WMM_IE_VENDOR_TYPE || 656 type == WPS_IE_VENDOR_TYPE || 657 type == P2P_IE_VENDOR_TYPE || 658 type == WFD_IE_VENDOR_TYPE) 659 continue; 660 } 661 662 /* Unknown vendor element - make raw IE data available */ 663 if (wpabuf_resize(&dev->info.vendor_elems, 2 + len) < 0) 664 break; 665 wpabuf_put_data(dev->info.vendor_elems, pos - 2, 2 + len); 666 } 667 } 668 669 670 static int p2p_compare_wfd_info(struct p2p_device *dev, 671 const struct p2p_message *msg) 672 { 673 if (dev->info.wfd_subelems && msg->wfd_subelems) { 674 if (dev->info.wfd_subelems->used != msg->wfd_subelems->used) 675 return 1; 676 677 return os_memcmp(dev->info.wfd_subelems->buf, 678 msg->wfd_subelems->buf, 679 dev->info.wfd_subelems->used); 680 } 681 if (dev->info.wfd_subelems || msg->wfd_subelems) 682 return 1; 683 684 return 0; 685 } 686 687 688 /** 689 * p2p_add_device - Add peer entries based on scan results or P2P frames 690 * @p2p: P2P module context from p2p_init() 691 * @addr: Source address of Beacon or Probe Response frame (may be either 692 * P2P Device Address or P2P Interface Address) 693 * @level: Signal level (signal strength of the received frame from the peer) 694 * @freq: Frequency on which the Beacon or Probe Response frame was received 695 * @rx_time: Time when the result was received 696 * @ies: IEs from the Beacon or Probe Response frame 697 * @ies_len: Length of ies buffer in octets 698 * @scan_res: Whether this was based on scan results 699 * Returns: 0 on success, -1 on failure 700 * 701 * If the scan result is for a GO, the clients in the group will also be added 702 * to the peer table. This function can also be used with some other frames 703 * like Provision Discovery Request that contains P2P Capability and P2P Device 704 * Info attributes. 705 */ 706 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, 707 struct os_reltime *rx_time, int level, const u8 *ies, 708 size_t ies_len, int scan_res) 709 { 710 struct p2p_device *dev; 711 struct p2p_message msg; 712 const u8 *p2p_dev_addr; 713 int wfd_changed; 714 int dev_name_changed; 715 int i; 716 struct os_reltime time_now; 717 718 os_memset(&msg, 0, sizeof(msg)); 719 if (p2p_parse_ies(ies, ies_len, &msg)) { 720 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry"); 721 p2p_parse_free(&msg); 722 return -1; 723 } 724 725 if (msg.p2p_device_addr) 726 p2p_dev_addr = msg.p2p_device_addr; 727 else if (msg.device_id) 728 p2p_dev_addr = msg.device_id; 729 else { 730 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 731 p2p_parse_free(&msg); 732 return -1; 733 } 734 735 if (!is_zero_ether_addr(p2p->peer_filter) && 736 os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) { 737 p2p_dbg(p2p, "Do not add peer filter for " MACSTR 738 " due to peer filter", MAC2STR(p2p_dev_addr)); 739 p2p_parse_free(&msg); 740 return 0; 741 } 742 743 dev = p2p_create_device(p2p, p2p_dev_addr); 744 if (dev == NULL) { 745 p2p_parse_free(&msg); 746 return -1; 747 } 748 749 if (rx_time == NULL) { 750 os_get_reltime(&time_now); 751 rx_time = &time_now; 752 } 753 754 /* 755 * Update the device entry only if the new peer 756 * entry is newer than the one previously stored, or if 757 * the device was previously seen as a P2P Client in a group 758 * and the new entry isn't older than a threshold. 759 */ 760 if (dev->last_seen.sec > 0 && 761 os_reltime_before(rx_time, &dev->last_seen) && 762 (!(dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT) || 763 os_reltime_expired(&dev->last_seen, rx_time, 764 P2P_DEV_GROUP_CLIENT_RESP_THRESHOLD))) { 765 p2p_dbg(p2p, 766 "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u flags=0x%x)", 767 (unsigned int) rx_time->sec, 768 (unsigned int) rx_time->usec, 769 (unsigned int) dev->last_seen.sec, 770 (unsigned int) dev->last_seen.usec, 771 dev->flags); 772 p2p_parse_free(&msg); 773 return -1; 774 } 775 776 os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime)); 777 778 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY | 779 P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT); 780 781 if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0) 782 os_memcpy(dev->interface_addr, addr, ETH_ALEN); 783 if (msg.ssid && 784 msg.ssid[1] <= sizeof(dev->oper_ssid) && 785 (msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 786 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 787 != 0)) { 788 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]); 789 dev->oper_ssid_len = msg.ssid[1]; 790 } 791 792 wpabuf_free(dev->info.p2ps_instance); 793 dev->info.p2ps_instance = NULL; 794 if (msg.adv_service_instance && msg.adv_service_instance_len) 795 dev->info.p2ps_instance = wpabuf_alloc_copy( 796 msg.adv_service_instance, msg.adv_service_instance_len); 797 798 if (freq >= 2412 && freq <= 2484 && msg.ds_params && 799 *msg.ds_params >= 1 && *msg.ds_params <= 14) { 800 int ds_freq; 801 if (*msg.ds_params == 14) 802 ds_freq = 2484; 803 else 804 ds_freq = 2407 + *msg.ds_params * 5; 805 if (freq != ds_freq) { 806 p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz", 807 freq, ds_freq); 808 freq = ds_freq; 809 } 810 } 811 812 if (dev->listen_freq && dev->listen_freq != freq && scan_res) { 813 p2p_dbg(p2p, "Update Listen frequency based on scan results (" 814 MACSTR " %d -> %d MHz (DS param %d)", 815 MAC2STR(dev->info.p2p_device_addr), dev->listen_freq, 816 freq, msg.ds_params ? *msg.ds_params : -1); 817 } 818 if (scan_res) { 819 dev->listen_freq = freq; 820 if (msg.group_info) 821 dev->oper_freq = freq; 822 } 823 dev->info.level = level; 824 825 dev_name_changed = os_strncmp(dev->info.device_name, msg.device_name, 826 WPS_DEV_NAME_MAX_LEN) != 0; 827 828 p2p_copy_wps_info(p2p, dev, 0, &msg); 829 830 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 831 wpabuf_free(dev->info.wps_vendor_ext[i]); 832 dev->info.wps_vendor_ext[i] = NULL; 833 } 834 835 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 836 if (msg.wps_vendor_ext[i] == NULL) 837 break; 838 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy( 839 msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]); 840 if (dev->info.wps_vendor_ext[i] == NULL) 841 break; 842 } 843 844 wfd_changed = p2p_compare_wfd_info(dev, &msg); 845 846 if (wfd_changed) { 847 wpabuf_free(dev->info.wfd_subelems); 848 if (msg.wfd_subelems) 849 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 850 else 851 dev->info.wfd_subelems = NULL; 852 } 853 854 if (scan_res) { 855 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, 856 msg.group_info, msg.group_info_len, 857 rx_time); 858 } 859 860 p2p_parse_free(&msg); 861 862 p2p_update_peer_vendor_elems(dev, ies, ies_len); 863 864 if (dev->flags & P2P_DEV_REPORTED && !wfd_changed && 865 !dev_name_changed && 866 (!msg.adv_service_instance || 867 (dev->flags & P2P_DEV_P2PS_REPORTED))) 868 return 0; 869 870 p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)", 871 freq, (unsigned int) rx_time->sec, 872 (unsigned int) rx_time->usec); 873 if (dev->flags & P2P_DEV_USER_REJECTED) { 874 p2p_dbg(p2p, "Do not report rejected device"); 875 return 0; 876 } 877 878 if (dev->info.config_methods == 0 && 879 (freq == 2412 || freq == 2437 || freq == 2462)) { 880 /* 881 * If we have only seen a Beacon frame from a GO, we do not yet 882 * know what WPS config methods it supports. Since some 883 * applications use config_methods value from P2P-DEVICE-FOUND 884 * events, postpone reporting this peer until we've fully 885 * discovered its capabilities. 886 * 887 * At least for now, do this only if the peer was detected on 888 * one of the social channels since that peer can be easily be 889 * found again and there are no limitations of having to use 890 * passive scan on this channels, so this can be done through 891 * Probe Response frame that includes the config_methods 892 * information. 893 */ 894 p2p_dbg(p2p, "Do not report peer " MACSTR 895 " with unknown config methods", MAC2STR(addr)); 896 return 0; 897 } 898 899 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 900 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 901 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 902 903 if (msg.adv_service_instance) 904 dev->flags |= P2P_DEV_P2PS_REPORTED; 905 906 return 0; 907 } 908 909 910 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev) 911 { 912 int i; 913 914 if (p2p->go_neg_peer == dev) { 915 /* 916 * If GO Negotiation is in progress, report that it has failed. 917 */ 918 p2p_go_neg_failed(p2p, -1); 919 } 920 if (p2p->invite_peer == dev) 921 p2p->invite_peer = NULL; 922 if (p2p->sd_peer == dev) 923 p2p->sd_peer = NULL; 924 if (p2p->pending_client_disc_go == dev) 925 p2p->pending_client_disc_go = NULL; 926 927 /* dev_lost() device, but only if it was previously dev_found() */ 928 if (dev->flags & P2P_DEV_REPORTED_ONCE) 929 p2p->cfg->dev_lost(p2p->cfg->cb_ctx, 930 dev->info.p2p_device_addr); 931 932 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 933 wpabuf_free(dev->info.wps_vendor_ext[i]); 934 dev->info.wps_vendor_ext[i] = NULL; 935 } 936 937 wpabuf_free(dev->info.wfd_subelems); 938 wpabuf_free(dev->info.vendor_elems); 939 wpabuf_free(dev->go_neg_conf); 940 wpabuf_free(dev->info.p2ps_instance); 941 942 os_free(dev); 943 } 944 945 946 static int p2p_get_next_prog_freq(struct p2p_data *p2p) 947 { 948 struct p2p_channels *c; 949 struct p2p_reg_class *cla; 950 size_t cl, ch; 951 int found = 0; 952 u8 reg_class; 953 u8 channel; 954 int freq; 955 956 c = &p2p->cfg->channels; 957 for (cl = 0; cl < c->reg_classes; cl++) { 958 cla = &c->reg_class[cl]; 959 if (cla->reg_class != p2p->last_prog_scan_class) 960 continue; 961 for (ch = 0; ch < cla->channels; ch++) { 962 if (cla->channel[ch] == p2p->last_prog_scan_chan) { 963 found = 1; 964 break; 965 } 966 } 967 if (found) 968 break; 969 } 970 971 if (!found) { 972 /* Start from beginning */ 973 reg_class = c->reg_class[0].reg_class; 974 channel = c->reg_class[0].channel[0]; 975 } else { 976 /* Pick the next channel */ 977 ch++; 978 if (ch == cla->channels) { 979 cl++; 980 if (cl == c->reg_classes) 981 cl = 0; 982 ch = 0; 983 } 984 reg_class = c->reg_class[cl].reg_class; 985 channel = c->reg_class[cl].channel[ch]; 986 } 987 988 freq = p2p_channel_to_freq(reg_class, channel); 989 p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz", 990 reg_class, channel, freq); 991 p2p->last_prog_scan_class = reg_class; 992 p2p->last_prog_scan_chan = channel; 993 994 if (freq == 2412 || freq == 2437 || freq == 2462) 995 return 0; /* No need to add social channels */ 996 return freq; 997 } 998 999 1000 static void p2p_search(struct p2p_data *p2p) 1001 { 1002 int freq = 0; 1003 enum p2p_scan_type type; 1004 u16 pw_id = DEV_PW_DEFAULT; 1005 int res; 1006 1007 if (p2p->drv_in_listen) { 1008 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing"); 1009 return; 1010 } 1011 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1012 1013 if (p2p->find_pending_full && 1014 (p2p->find_type == P2P_FIND_PROGRESSIVE || 1015 p2p->find_type == P2P_FIND_START_WITH_FULL)) { 1016 type = P2P_SCAN_FULL; 1017 p2p_dbg(p2p, "Starting search (pending full scan)"); 1018 p2p->find_pending_full = 0; 1019 } else if ((p2p->find_type == P2P_FIND_PROGRESSIVE && 1020 (freq = p2p_get_next_prog_freq(p2p)) > 0) || 1021 (p2p->find_type == P2P_FIND_START_WITH_FULL && 1022 (freq = p2p->find_specified_freq) > 0)) { 1023 type = P2P_SCAN_SOCIAL_PLUS_ONE; 1024 p2p_dbg(p2p, "Starting search (+ freq %u)", freq); 1025 } else { 1026 type = P2P_SCAN_SOCIAL; 1027 p2p_dbg(p2p, "Starting search"); 1028 } 1029 1030 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq, 1031 p2p->num_req_dev_types, p2p->req_dev_types, 1032 p2p->find_dev_id, pw_id); 1033 if (res < 0) { 1034 p2p_dbg(p2p, "Scan request schedule failed"); 1035 p2p_continue_find(p2p); 1036 } 1037 } 1038 1039 1040 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx) 1041 { 1042 struct p2p_data *p2p = eloop_ctx; 1043 p2p_dbg(p2p, "Find timeout -> stop"); 1044 p2p_stop_find(p2p); 1045 } 1046 1047 1048 void p2p_notify_scan_trigger_status(struct p2p_data *p2p, int status) 1049 { 1050 if (status != 0) { 1051 p2p_dbg(p2p, "Scan request failed"); 1052 /* Do continue find even for the first p2p_find_scan */ 1053 p2p_continue_find(p2p); 1054 } else { 1055 p2p_dbg(p2p, "Running p2p_scan"); 1056 p2p->p2p_scan_running = 1; 1057 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 1058 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout, 1059 p2p, NULL); 1060 } 1061 } 1062 1063 1064 static int p2p_run_after_scan(struct p2p_data *p2p) 1065 { 1066 struct p2p_device *dev; 1067 enum p2p_after_scan op; 1068 1069 if (p2p->after_scan_tx) { 1070 p2p->after_scan_tx_in_progress = 1; 1071 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion"); 1072 p2p->cfg->send_action(p2p->cfg->cb_ctx, 1073 p2p->after_scan_tx->freq, 1074 p2p->after_scan_tx->dst, 1075 p2p->after_scan_tx->src, 1076 p2p->after_scan_tx->bssid, 1077 (u8 *) (p2p->after_scan_tx + 1), 1078 p2p->after_scan_tx->len, 1079 p2p->after_scan_tx->wait_time, NULL); 1080 os_free(p2p->after_scan_tx); 1081 p2p->after_scan_tx = NULL; 1082 return 1; 1083 } 1084 1085 op = p2p->start_after_scan; 1086 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1087 switch (op) { 1088 case P2P_AFTER_SCAN_NOTHING: 1089 break; 1090 case P2P_AFTER_SCAN_LISTEN: 1091 p2p_dbg(p2p, "Start previously requested Listen state"); 1092 p2p_listen(p2p, p2p->pending_listen_sec * 1000 + 1093 p2p->pending_listen_usec / 1000); 1094 return 1; 1095 case P2P_AFTER_SCAN_CONNECT: 1096 p2p_dbg(p2p, "Start previously requested connect with " MACSTR, 1097 MAC2STR(p2p->after_scan_peer)); 1098 dev = p2p_get_device(p2p, p2p->after_scan_peer); 1099 if (dev == NULL) { 1100 p2p_dbg(p2p, "Peer not known anymore"); 1101 break; 1102 } 1103 p2p_connect_send(p2p, dev); 1104 return 1; 1105 } 1106 1107 return 0; 1108 } 1109 1110 1111 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1112 { 1113 struct p2p_data *p2p = eloop_ctx; 1114 int running; 1115 p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running); 1116 running = p2p->p2p_scan_running; 1117 /* Make sure we recover from missed scan results callback */ 1118 p2p->p2p_scan_running = 0; 1119 1120 if (running) 1121 p2p_run_after_scan(p2p); 1122 } 1123 1124 1125 static void p2p_free_req_dev_types(struct p2p_data *p2p) 1126 { 1127 p2p->num_req_dev_types = 0; 1128 os_free(p2p->req_dev_types); 1129 p2p->req_dev_types = NULL; 1130 } 1131 1132 1133 static int p2ps_gen_hash(struct p2p_data *p2p, const char *str, u8 *hash) 1134 { 1135 u8 buf[SHA256_MAC_LEN]; 1136 char str_buf[256]; 1137 const u8 *adv_array; 1138 size_t i, adv_len; 1139 1140 if (!str || !hash) 1141 return 0; 1142 1143 if (!str[0]) { 1144 os_memcpy(hash, p2p->wild_card_hash, P2PS_HASH_LEN); 1145 return 1; 1146 } 1147 1148 adv_array = (u8 *) str_buf; 1149 adv_len = os_strlen(str); 1150 if (adv_len >= sizeof(str_buf)) 1151 return 0; 1152 1153 for (i = 0; i < adv_len; i++) { 1154 if (str[i] >= 'A' && str[i] <= 'Z') 1155 str_buf[i] = str[i] - 'A' + 'a'; 1156 else 1157 str_buf[i] = str[i]; 1158 } 1159 1160 if (sha256_vector(1, &adv_array, &adv_len, buf)) 1161 return 0; 1162 1163 os_memcpy(hash, buf, P2PS_HASH_LEN); 1164 return 1; 1165 } 1166 1167 1168 int p2p_find(struct p2p_data *p2p, unsigned int timeout, 1169 enum p2p_discovery_type type, 1170 unsigned int num_req_dev_types, const u8 *req_dev_types, 1171 const u8 *dev_id, unsigned int search_delay, 1172 u8 seek_count, const char **seek, int freq) 1173 { 1174 int res; 1175 struct os_reltime start; 1176 1177 p2p_dbg(p2p, "Starting find (type=%d)", type); 1178 if (p2p->p2p_scan_running) { 1179 p2p_dbg(p2p, "p2p_scan is already running"); 1180 } 1181 1182 p2p_free_req_dev_types(p2p); 1183 if (req_dev_types && num_req_dev_types) { 1184 p2p->req_dev_types = os_memdup(req_dev_types, 1185 num_req_dev_types * 1186 WPS_DEV_TYPE_LEN); 1187 if (p2p->req_dev_types == NULL) 1188 return -1; 1189 p2p->num_req_dev_types = num_req_dev_types; 1190 } 1191 1192 if (dev_id) { 1193 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN); 1194 p2p->find_dev_id = p2p->find_dev_id_buf; 1195 } else 1196 p2p->find_dev_id = NULL; 1197 1198 if (seek_count == 0 || !seek) { 1199 /* Not an ASP search */ 1200 p2p->p2ps_seek = 0; 1201 } else if (seek_count == 1 && seek && (!seek[0] || !seek[0][0])) { 1202 /* 1203 * An empty seek string means no hash values, but still an ASP 1204 * search. 1205 */ 1206 p2p_dbg(p2p, "ASP search"); 1207 p2p->p2ps_seek_count = 0; 1208 p2p->p2ps_seek = 1; 1209 } else if (seek && seek_count <= P2P_MAX_QUERY_HASH) { 1210 u8 buf[P2PS_HASH_LEN]; 1211 int i, count = 0; 1212 1213 for (i = 0; i < seek_count; i++) { 1214 if (!p2ps_gen_hash(p2p, seek[i], buf)) 1215 continue; 1216 1217 p2p_dbg(p2p, "Seek service %s hash " MACSTR, 1218 seek[i], MAC2STR(buf)); 1219 os_memcpy(&p2p->p2ps_seek_hash[count * P2PS_HASH_LEN], 1220 buf, P2PS_HASH_LEN); 1221 count++; 1222 } 1223 1224 p2p->p2ps_seek_count = count; 1225 p2p->p2ps_seek = 1; 1226 } else { 1227 p2p->p2ps_seek_count = 0; 1228 p2p->p2ps_seek = 1; 1229 } 1230 1231 /* Special case to perform wildcard search */ 1232 if (p2p->p2ps_seek_count == 0 && p2p->p2ps_seek) { 1233 p2p->p2ps_seek_count = 1; 1234 os_memcpy(&p2p->p2ps_seek_hash, p2p->wild_card_hash, 1235 P2PS_HASH_LEN); 1236 } 1237 1238 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1239 p2p_clear_timeout(p2p); 1240 if (p2p->pending_listen_freq) { 1241 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_find"); 1242 p2p->pending_listen_freq = 0; 1243 } 1244 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1245 p2p->find_pending_full = 0; 1246 p2p->find_type = type; 1247 if (freq != 2412 && freq != 2437 && freq != 2462 && freq != 60480) 1248 p2p->find_specified_freq = freq; 1249 else 1250 p2p->find_specified_freq = 0; 1251 p2p_device_clear_reported(p2p); 1252 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN); 1253 p2p_set_state(p2p, P2P_SEARCH); 1254 p2p->search_delay = search_delay; 1255 p2p->in_search_delay = 0; 1256 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1257 p2p->last_p2p_find_timeout = timeout; 1258 if (timeout) 1259 eloop_register_timeout(timeout, 0, p2p_find_timeout, 1260 p2p, NULL); 1261 os_get_reltime(&start); 1262 switch (type) { 1263 case P2P_FIND_START_WITH_FULL: 1264 if (freq > 0) { 1265 /* 1266 * Start with the specified channel and then move to 1267 * scans for social channels and this specific channel. 1268 */ 1269 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, 1270 P2P_SCAN_SPECIFIC, freq, 1271 p2p->num_req_dev_types, 1272 p2p->req_dev_types, dev_id, 1273 DEV_PW_DEFAULT); 1274 break; 1275 } 1276 /* fall through */ 1277 case P2P_FIND_PROGRESSIVE: 1278 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0, 1279 p2p->num_req_dev_types, 1280 p2p->req_dev_types, dev_id, 1281 DEV_PW_DEFAULT); 1282 break; 1283 case P2P_FIND_ONLY_SOCIAL: 1284 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0, 1285 p2p->num_req_dev_types, 1286 p2p->req_dev_types, dev_id, 1287 DEV_PW_DEFAULT); 1288 break; 1289 default: 1290 return -1; 1291 } 1292 1293 if (!res) 1294 p2p->find_start = start; 1295 1296 if (res != 0 && p2p->p2p_scan_running) { 1297 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running"); 1298 /* wait for the previous p2p_scan to complete */ 1299 if (type == P2P_FIND_PROGRESSIVE || 1300 (type == P2P_FIND_START_WITH_FULL && freq == 0)) 1301 p2p->find_pending_full = 1; 1302 res = 0; /* do not report failure */ 1303 } else if (res != 0) { 1304 p2p_dbg(p2p, "Failed to start p2p_scan"); 1305 p2p_set_state(p2p, P2P_IDLE); 1306 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1307 } 1308 1309 return res; 1310 } 1311 1312 1313 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq) 1314 { 1315 p2p_dbg(p2p, "Stopping find"); 1316 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL); 1317 p2p_clear_timeout(p2p); 1318 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND) 1319 p2p->cfg->find_stopped(p2p->cfg->cb_ctx); 1320 1321 p2p->p2ps_seek_count = 0; 1322 1323 p2p_set_state(p2p, P2P_IDLE); 1324 p2p_free_req_dev_types(p2p); 1325 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1326 if (p2p->go_neg_peer) 1327 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1328 p2p->go_neg_peer = NULL; 1329 p2p->sd_peer = NULL; 1330 p2p->invite_peer = NULL; 1331 p2p_stop_listen_for_freq(p2p, freq); 1332 p2p->send_action_in_progress = 0; 1333 } 1334 1335 1336 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq) 1337 { 1338 if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) { 1339 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response"); 1340 return; 1341 } 1342 if (p2p->in_listen) { 1343 p2p->in_listen = 0; 1344 p2p_clear_timeout(p2p); 1345 } 1346 if (p2p->drv_in_listen) { 1347 /* 1348 * The driver may not deliver callback to p2p_listen_end() 1349 * when the operation gets canceled, so clear the internal 1350 * variable that is tracking driver state. 1351 */ 1352 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen); 1353 p2p->drv_in_listen = 0; 1354 } 1355 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 1356 } 1357 1358 1359 void p2p_stop_listen(struct p2p_data *p2p) 1360 { 1361 if (p2p->state != P2P_LISTEN_ONLY) { 1362 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state."); 1363 return; 1364 } 1365 1366 p2p_stop_listen_for_freq(p2p, 0); 1367 p2p_set_state(p2p, P2P_IDLE); 1368 } 1369 1370 1371 void p2p_stop_find(struct p2p_data *p2p) 1372 { 1373 p2p->pending_listen_freq = 0; 1374 p2p_stop_find_for_freq(p2p, 0); 1375 } 1376 1377 1378 static int p2p_prepare_channel_pref(struct p2p_data *p2p, 1379 unsigned int force_freq, 1380 unsigned int pref_freq, int go) 1381 { 1382 u8 op_class, op_channel; 1383 unsigned int freq = force_freq ? force_freq : pref_freq; 1384 1385 p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d", 1386 force_freq, pref_freq, go); 1387 if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) { 1388 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq); 1389 return -1; 1390 } 1391 1392 if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) && 1393 (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class, 1394 op_channel))) { 1395 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P", 1396 freq, op_class, op_channel); 1397 return -1; 1398 } 1399 1400 p2p->op_reg_class = op_class; 1401 p2p->op_channel = op_channel; 1402 1403 if (force_freq) { 1404 p2p->channels.reg_classes = 1; 1405 p2p->channels.reg_class[0].channels = 1; 1406 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class; 1407 p2p->channels.reg_class[0].channel[0] = p2p->op_channel; 1408 } else { 1409 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1410 sizeof(struct p2p_channels)); 1411 } 1412 1413 return 0; 1414 } 1415 1416 1417 static void p2p_prepare_channel_best(struct p2p_data *p2p) 1418 { 1419 u8 op_class, op_channel; 1420 const int op_classes_5ghz[] = { 124, 125, 115, 0 }; 1421 const int op_classes_ht40[] = { 126, 127, 116, 117, 0 }; 1422 const int op_classes_vht[] = { 128, 0 }; 1423 1424 p2p_dbg(p2p, "Prepare channel best"); 1425 1426 if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 && 1427 p2p_supported_freq(p2p, p2p->best_freq_overall) && 1428 p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel) 1429 == 0) { 1430 p2p_dbg(p2p, "Select best overall channel as operating channel preference"); 1431 p2p->op_reg_class = op_class; 1432 p2p->op_channel = op_channel; 1433 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 && 1434 p2p_supported_freq(p2p, p2p->best_freq_5) && 1435 p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel) 1436 == 0) { 1437 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference"); 1438 p2p->op_reg_class = op_class; 1439 p2p->op_channel = op_channel; 1440 } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 && 1441 p2p_supported_freq(p2p, p2p->best_freq_24) && 1442 p2p_freq_to_channel(p2p->best_freq_24, &op_class, 1443 &op_channel) == 0) { 1444 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference"); 1445 p2p->op_reg_class = op_class; 1446 p2p->op_channel = op_channel; 1447 } else if (p2p->cfg->num_pref_chan > 0 && 1448 p2p_channels_includes(&p2p->cfg->channels, 1449 p2p->cfg->pref_chan[0].op_class, 1450 p2p->cfg->pref_chan[0].chan)) { 1451 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference"); 1452 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class; 1453 p2p->op_channel = p2p->cfg->pref_chan[0].chan; 1454 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht, 1455 &p2p->op_reg_class, &p2p->op_channel) == 1456 0) { 1457 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference", 1458 p2p->op_reg_class, p2p->op_channel); 1459 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40, 1460 &p2p->op_reg_class, &p2p->op_channel) == 1461 0) { 1462 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference", 1463 p2p->op_reg_class, p2p->op_channel); 1464 } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz, 1465 &p2p->op_reg_class, &p2p->op_channel) == 1466 0) { 1467 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference", 1468 p2p->op_reg_class, p2p->op_channel); 1469 } else if (p2p_channels_includes(&p2p->cfg->channels, 1470 p2p->cfg->op_reg_class, 1471 p2p->cfg->op_channel)) { 1472 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference"); 1473 p2p->op_reg_class = p2p->cfg->op_reg_class; 1474 p2p->op_channel = p2p->cfg->op_channel; 1475 } else if (p2p_channel_random_social(&p2p->cfg->channels, 1476 &p2p->op_reg_class, 1477 &p2p->op_channel, 1478 NULL, NULL) == 0) { 1479 p2p_dbg(p2p, "Select random available social channel (op_class %u channel %u) as operating channel preference", 1480 p2p->op_reg_class, p2p->op_channel); 1481 } else { 1482 /* Select any random available channel from the first available 1483 * operating class */ 1484 p2p_channel_select(&p2p->cfg->channels, NULL, 1485 &p2p->op_reg_class, 1486 &p2p->op_channel); 1487 p2p_dbg(p2p, "Select random available channel %d from operating class %d as operating channel preference", 1488 p2p->op_channel, p2p->op_reg_class); 1489 } 1490 1491 os_memcpy(&p2p->channels, &p2p->cfg->channels, 1492 sizeof(struct p2p_channels)); 1493 } 1494 1495 1496 /** 1497 * p2p_prepare_channel - Select operating channel for GO Negotiation or P2PS PD 1498 * @p2p: P2P module context from p2p_init() 1499 * @dev: Selected peer device 1500 * @force_freq: Forced frequency in MHz or 0 if not forced 1501 * @pref_freq: Preferred frequency in MHz or 0 if no preference 1502 * @go: Whether the local end will be forced to be GO 1503 * Returns: 0 on success, -1 on failure (channel not supported for P2P) 1504 * 1505 * This function is used to do initial operating channel selection for GO 1506 * Negotiation prior to having received peer information or for P2PS PD 1507 * signalling. The selected channel may be further optimized in 1508 * p2p_reselect_channel() once the peer information is available. 1509 */ 1510 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev, 1511 unsigned int force_freq, unsigned int pref_freq, int go) 1512 { 1513 p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d", 1514 force_freq, pref_freq, go); 1515 if (force_freq || pref_freq) { 1516 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) < 1517 0) 1518 return -1; 1519 } else { 1520 p2p_prepare_channel_best(p2p); 1521 } 1522 p2p_channels_dump(p2p, "prepared channels", &p2p->channels); 1523 if (go) 1524 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq); 1525 else if (!force_freq) 1526 p2p_channels_union_inplace(&p2p->channels, 1527 &p2p->cfg->cli_channels); 1528 p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels); 1529 1530 p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s", 1531 p2p->op_reg_class, p2p->op_channel, 1532 force_freq ? " (forced)" : ""); 1533 1534 if (force_freq) 1535 dev->flags |= P2P_DEV_FORCE_FREQ; 1536 else 1537 dev->flags &= ~P2P_DEV_FORCE_FREQ; 1538 1539 return 0; 1540 } 1541 1542 1543 static void p2p_set_dev_persistent(struct p2p_device *dev, 1544 int persistent_group) 1545 { 1546 switch (persistent_group) { 1547 case 0: 1548 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP | 1549 P2P_DEV_PREFER_PERSISTENT_RECONN); 1550 break; 1551 case 1: 1552 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP; 1553 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN; 1554 break; 1555 case 2: 1556 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP | 1557 P2P_DEV_PREFER_PERSISTENT_RECONN; 1558 break; 1559 } 1560 } 1561 1562 1563 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr, 1564 enum p2p_wps_method wps_method, 1565 int go_intent, const u8 *own_interface_addr, 1566 unsigned int force_freq, int persistent_group, 1567 const u8 *force_ssid, size_t force_ssid_len, 1568 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id) 1569 { 1570 struct p2p_device *dev; 1571 1572 p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR 1573 " GO Intent=%d Intended Interface Address=" MACSTR 1574 " wps_method=%d persistent_group=%d pd_before_go_neg=%d " 1575 "oob_pw_id=%u", 1576 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1577 wps_method, persistent_group, pd_before_go_neg, oob_pw_id); 1578 1579 dev = p2p_get_device(p2p, peer_addr); 1580 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1581 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR, 1582 MAC2STR(peer_addr)); 1583 return -1; 1584 } 1585 1586 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, 1587 go_intent == 15) < 0) 1588 return -1; 1589 1590 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1591 if (!(dev->info.dev_capab & 1592 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1593 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1594 " that is in a group and is not discoverable", 1595 MAC2STR(peer_addr)); 1596 return -1; 1597 } 1598 if (dev->oper_freq <= 0) { 1599 p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR 1600 " with incomplete information", 1601 MAC2STR(peer_addr)); 1602 return -1; 1603 } 1604 1605 /* 1606 * First, try to connect directly. If the peer does not 1607 * acknowledge frames, assume it is sleeping and use device 1608 * discoverability via the GO at that point. 1609 */ 1610 } 1611 1612 p2p->ssid_set = 0; 1613 if (force_ssid) { 1614 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1615 force_ssid, force_ssid_len); 1616 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1617 p2p->ssid_len = force_ssid_len; 1618 p2p->ssid_set = 1; 1619 } 1620 1621 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1622 dev->flags &= ~P2P_DEV_USER_REJECTED; 1623 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 1624 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 1625 if (pd_before_go_neg) 1626 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG; 1627 else { 1628 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1629 /* 1630 * Assign dialog token and tie breaker here to use the same 1631 * values in each retry within the same GO Negotiation exchange. 1632 */ 1633 dev->dialog_token++; 1634 if (dev->dialog_token == 0) 1635 dev->dialog_token = 1; 1636 dev->tie_breaker = p2p->next_tie_breaker; 1637 p2p->next_tie_breaker = !p2p->next_tie_breaker; 1638 } 1639 dev->connect_reqs = 0; 1640 dev->go_neg_req_sent = 0; 1641 dev->go_state = UNKNOWN_GO; 1642 p2p_set_dev_persistent(dev, persistent_group); 1643 p2p->go_intent = go_intent; 1644 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1645 1646 if (p2p->state != P2P_IDLE) 1647 p2p_stop_find(p2p); 1648 1649 if (p2p->after_scan_tx) { 1650 /* 1651 * We need to drop the pending frame to avoid issues with the 1652 * new GO Negotiation, e.g., when the pending frame was from a 1653 * previous attempt at starting a GO Negotiation. 1654 */ 1655 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion"); 1656 os_free(p2p->after_scan_tx); 1657 p2p->after_scan_tx = NULL; 1658 } 1659 1660 dev->wps_method = wps_method; 1661 dev->oob_pw_id = oob_pw_id; 1662 dev->status = P2P_SC_SUCCESS; 1663 1664 if (p2p->p2p_scan_running) { 1665 p2p_dbg(p2p, "p2p_scan running - delay connect send"); 1666 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT; 1667 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN); 1668 return 0; 1669 } 1670 p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING; 1671 1672 return p2p_connect_send(p2p, dev); 1673 } 1674 1675 1676 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr, 1677 enum p2p_wps_method wps_method, 1678 int go_intent, const u8 *own_interface_addr, 1679 unsigned int force_freq, int persistent_group, 1680 const u8 *force_ssid, size_t force_ssid_len, 1681 unsigned int pref_freq, u16 oob_pw_id) 1682 { 1683 struct p2p_device *dev; 1684 1685 p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR 1686 " GO Intent=%d Intended Interface Address=" MACSTR 1687 " wps_method=%d persistent_group=%d oob_pw_id=%u", 1688 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr), 1689 wps_method, persistent_group, oob_pw_id); 1690 1691 dev = p2p_get_device(p2p, peer_addr); 1692 if (dev == NULL) { 1693 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR, 1694 MAC2STR(peer_addr)); 1695 return -1; 1696 } 1697 1698 if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent == 1699 15) < 0) 1700 return -1; 1701 1702 p2p->ssid_set = 0; 1703 if (force_ssid) { 1704 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID", 1705 force_ssid, force_ssid_len); 1706 os_memcpy(p2p->ssid, force_ssid, force_ssid_len); 1707 p2p->ssid_len = force_ssid_len; 1708 p2p->ssid_set = 1; 1709 } 1710 1711 dev->flags &= ~P2P_DEV_NOT_YET_READY; 1712 dev->flags &= ~P2P_DEV_USER_REJECTED; 1713 dev->go_neg_req_sent = 0; 1714 dev->go_state = UNKNOWN_GO; 1715 p2p_set_dev_persistent(dev, persistent_group); 1716 p2p->go_intent = go_intent; 1717 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 1718 1719 dev->wps_method = wps_method; 1720 dev->oob_pw_id = oob_pw_id; 1721 dev->status = P2P_SC_SUCCESS; 1722 1723 return 0; 1724 } 1725 1726 1727 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr, 1728 struct p2p_device *dev, struct p2p_message *msg) 1729 { 1730 os_get_reltime(&dev->last_seen); 1731 1732 p2p_copy_wps_info(p2p, dev, 0, msg); 1733 1734 if (msg->listen_channel) { 1735 int freq; 1736 freq = p2p_channel_to_freq(msg->listen_channel[3], 1737 msg->listen_channel[4]); 1738 if (freq < 0) { 1739 p2p_dbg(p2p, "Unknown peer Listen channel: " 1740 "country=%c%c(0x%02x) reg_class=%u channel=%u", 1741 msg->listen_channel[0], 1742 msg->listen_channel[1], 1743 msg->listen_channel[2], 1744 msg->listen_channel[3], 1745 msg->listen_channel[4]); 1746 } else { 1747 p2p_dbg(p2p, "Update peer " MACSTR 1748 " Listen channel: %u -> %u MHz", 1749 MAC2STR(dev->info.p2p_device_addr), 1750 dev->listen_freq, freq); 1751 dev->listen_freq = freq; 1752 } 1753 } 1754 1755 if (msg->wfd_subelems) { 1756 wpabuf_free(dev->info.wfd_subelems); 1757 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems); 1758 } 1759 1760 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 1761 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY; 1762 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request"); 1763 } else { 1764 p2p_dbg(p2p, "Created device entry based on GO Neg Req: " 1765 MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' " 1766 "listen_freq=%d", 1767 MAC2STR(dev->info.p2p_device_addr), 1768 dev->info.dev_capab, dev->info.group_capab, 1769 dev->info.device_name, dev->listen_freq); 1770 } 1771 1772 dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY; 1773 1774 if (dev->flags & P2P_DEV_USER_REJECTED) { 1775 p2p_dbg(p2p, "Do not report rejected device"); 1776 return; 1777 } 1778 1779 p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info, 1780 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 1781 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 1782 } 1783 1784 1785 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len) 1786 { 1787 os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 1788 p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2); 1789 os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2], 1790 p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len); 1791 *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len; 1792 } 1793 1794 1795 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params) 1796 { 1797 if (p2p->ssid_set) { 1798 os_memcpy(params->ssid, p2p->ssid, p2p->ssid_len); 1799 params->ssid_len = p2p->ssid_len; 1800 } else { 1801 p2p_build_ssid(p2p, params->ssid, ¶ms->ssid_len); 1802 } 1803 p2p->ssid_set = 0; 1804 1805 if (p2p->passphrase_set) { 1806 os_memcpy(params->passphrase, p2p->passphrase, os_strlen(p2p->passphrase)); 1807 } else { 1808 p2p_random(params->passphrase, p2p->cfg->passphrase_len); 1809 } 1810 p2p->passphrase_set = 0; 1811 return 0; 1812 } 1813 1814 1815 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer) 1816 { 1817 struct p2p_go_neg_results res; 1818 int go = peer->go_state == LOCAL_GO; 1819 struct p2p_channels intersection; 1820 1821 p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)", 1822 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer"); 1823 1824 os_memset(&res, 0, sizeof(res)); 1825 res.role_go = go; 1826 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN); 1827 os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN); 1828 res.wps_method = peer->wps_method; 1829 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) { 1830 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN) 1831 res.persistent_group = 2; 1832 else 1833 res.persistent_group = 1; 1834 } 1835 1836 if (go) { 1837 /* Setup AP mode for WPS provisioning */ 1838 res.freq = p2p_channel_to_freq(p2p->op_reg_class, 1839 p2p->op_channel); 1840 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1841 res.ssid_len = p2p->ssid_len; 1842 p2p_random(res.passphrase, p2p->cfg->passphrase_len); 1843 } else { 1844 res.freq = peer->oper_freq; 1845 if (p2p->ssid_len) { 1846 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len); 1847 res.ssid_len = p2p->ssid_len; 1848 } 1849 } 1850 1851 p2p_channels_dump(p2p, "own channels", &p2p->channels); 1852 p2p_channels_dump(p2p, "peer channels", &peer->channels); 1853 p2p_channels_intersect(&p2p->channels, &peer->channels, 1854 &intersection); 1855 if (go) { 1856 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq); 1857 p2p_channels_dump(p2p, "intersection after no-GO removal", 1858 &intersection); 1859 } 1860 1861 p2p_channels_to_freqs(&intersection, res.freq_list, 1862 P2P_MAX_CHANNELS); 1863 1864 res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout; 1865 1866 p2p_clear_timeout(p2p); 1867 p2p->ssid_set = 0; 1868 peer->go_neg_req_sent = 0; 1869 peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE; 1870 peer->wps_method = WPS_NOT_READY; 1871 peer->oob_pw_id = 0; 1872 wpabuf_free(peer->go_neg_conf); 1873 peer->go_neg_conf = NULL; 1874 1875 p2p_set_state(p2p, P2P_PROVISIONING); 1876 p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res); 1877 } 1878 1879 1880 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa, 1881 const u8 *data, size_t len, int rx_freq) 1882 { 1883 p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa)); 1884 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len); 1885 1886 if (len < 1) 1887 return; 1888 1889 switch (data[0]) { 1890 case P2P_GO_NEG_REQ: 1891 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq); 1892 break; 1893 case P2P_GO_NEG_RESP: 1894 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq); 1895 break; 1896 case P2P_GO_NEG_CONF: 1897 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1); 1898 break; 1899 case P2P_INVITATION_REQ: 1900 p2p_process_invitation_req(p2p, sa, data + 1, len - 1, 1901 rx_freq); 1902 break; 1903 case P2P_INVITATION_RESP: 1904 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1); 1905 break; 1906 case P2P_PROV_DISC_REQ: 1907 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1908 break; 1909 case P2P_PROV_DISC_RESP: 1910 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1); 1911 break; 1912 case P2P_DEV_DISC_REQ: 1913 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq); 1914 break; 1915 case P2P_DEV_DISC_RESP: 1916 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1); 1917 break; 1918 default: 1919 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d", 1920 data[0]); 1921 break; 1922 } 1923 } 1924 1925 1926 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, 1927 const u8 *sa, const u8 *bssid, const u8 *data, 1928 size_t len, int freq) 1929 { 1930 if (len < 1) 1931 return; 1932 1933 switch (data[0]) { 1934 case WLAN_PA_VENDOR_SPECIFIC: 1935 data++; 1936 len--; 1937 if (len < 4) 1938 return; 1939 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1940 return; 1941 1942 data += 4; 1943 len -= 4; 1944 1945 p2p_rx_p2p_action(p2p, sa, data, len, freq); 1946 break; 1947 case WLAN_PA_GAS_INITIAL_REQ: 1948 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq); 1949 break; 1950 case WLAN_PA_GAS_INITIAL_RESP: 1951 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq); 1952 break; 1953 case WLAN_PA_GAS_COMEBACK_REQ: 1954 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq); 1955 break; 1956 case WLAN_PA_GAS_COMEBACK_RESP: 1957 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq); 1958 break; 1959 } 1960 } 1961 1962 1963 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa, 1964 const u8 *bssid, u8 category, 1965 const u8 *data, size_t len, int freq) 1966 { 1967 if (category == WLAN_ACTION_PUBLIC) { 1968 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq); 1969 return; 1970 } 1971 1972 if (category != WLAN_ACTION_VENDOR_SPECIFIC) 1973 return; 1974 1975 if (len < 4) 1976 return; 1977 1978 if (WPA_GET_BE32(data) != P2P_IE_VENDOR_TYPE) 1979 return; 1980 data += 4; 1981 len -= 4; 1982 1983 /* P2P action frame */ 1984 p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa)); 1985 wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len); 1986 1987 if (len < 1) 1988 return; 1989 switch (data[0]) { 1990 case P2P_NOA: 1991 p2p_dbg(p2p, "Received P2P Action - Notice of Absence"); 1992 /* TODO */ 1993 break; 1994 case P2P_PRESENCE_REQ: 1995 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq); 1996 break; 1997 case P2P_PRESENCE_RESP: 1998 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1); 1999 break; 2000 case P2P_GO_DISC_REQ: 2001 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq); 2002 break; 2003 default: 2004 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]); 2005 break; 2006 } 2007 } 2008 2009 2010 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx) 2011 { 2012 struct p2p_data *p2p = eloop_ctx; 2013 if (p2p->go_neg_peer == NULL) 2014 return; 2015 if (p2p->pending_listen_freq) { 2016 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_go_neg_start"); 2017 p2p->pending_listen_freq = 0; 2018 } 2019 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2020 p2p->go_neg_peer->status = P2P_SC_SUCCESS; 2021 /* 2022 * Set new timeout to make sure a previously set one does not expire 2023 * too quickly while waiting for the GO Negotiation to complete. 2024 */ 2025 p2p_set_timeout(p2p, 0, 500000); 2026 p2p_connect_send(p2p, p2p->go_neg_peer); 2027 } 2028 2029 2030 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx) 2031 { 2032 struct p2p_data *p2p = eloop_ctx; 2033 if (p2p->invite_peer == NULL) 2034 return; 2035 if (p2p->pending_listen_freq) { 2036 p2p_dbg(p2p, "Clear pending_listen_freq for p2p_invite_start"); 2037 p2p->pending_listen_freq = 0; 2038 } 2039 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 2040 p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr, 2041 p2p->invite_dev_pw_id); 2042 } 2043 2044 2045 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr, 2046 const u8 *ie, size_t ie_len) 2047 { 2048 struct p2p_message msg; 2049 struct p2p_device *dev; 2050 2051 os_memset(&msg, 0, sizeof(msg)); 2052 if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL) 2053 { 2054 p2p_parse_free(&msg); 2055 return; /* not a P2P probe */ 2056 } 2057 2058 if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN || 2059 os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) 2060 != 0) { 2061 /* The Probe Request is not part of P2P Device Discovery. It is 2062 * not known whether the source address of the frame is the P2P 2063 * Device Address or P2P Interface Address. Do not add a new 2064 * peer entry based on this frames. 2065 */ 2066 p2p_parse_free(&msg); 2067 return; 2068 } 2069 2070 dev = p2p_get_device(p2p, addr); 2071 if (dev) { 2072 if (msg.listen_channel) { 2073 int freq; 2074 2075 if (dev->country[0] == 0) 2076 os_memcpy(dev->country, msg.listen_channel, 3); 2077 2078 freq = p2p_channel_to_freq(msg.listen_channel[3], 2079 msg.listen_channel[4]); 2080 2081 if (freq > 0 && dev->listen_freq != freq) { 2082 p2p_dbg(p2p, 2083 "Updated peer " MACSTR " Listen channel (Probe Request): %d -> %d MHz", 2084 MAC2STR(addr), dev->listen_freq, freq); 2085 dev->listen_freq = freq; 2086 } 2087 } 2088 2089 os_get_reltime(&dev->last_seen); 2090 p2p_parse_free(&msg); 2091 return; /* already known */ 2092 } 2093 2094 dev = p2p_create_device(p2p, addr); 2095 if (dev == NULL) { 2096 p2p_parse_free(&msg); 2097 return; 2098 } 2099 2100 os_get_reltime(&dev->last_seen); 2101 dev->flags |= P2P_DEV_PROBE_REQ_ONLY; 2102 2103 if (msg.listen_channel) { 2104 os_memcpy(dev->country, msg.listen_channel, 3); 2105 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3], 2106 msg.listen_channel[4]); 2107 } 2108 2109 p2p_copy_wps_info(p2p, dev, 1, &msg); 2110 2111 if (msg.wfd_subelems) { 2112 wpabuf_free(dev->info.wfd_subelems); 2113 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 2114 } 2115 2116 p2p_parse_free(&msg); 2117 2118 p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR 2119 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d", 2120 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab, 2121 dev->info.group_capab, dev->info.device_name, 2122 dev->listen_freq); 2123 } 2124 2125 2126 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p, 2127 const u8 *addr, 2128 struct p2p_message *msg) 2129 { 2130 struct p2p_device *dev; 2131 2132 dev = p2p_get_device(p2p, addr); 2133 if (dev) { 2134 os_get_reltime(&dev->last_seen); 2135 return dev; /* already known */ 2136 } 2137 2138 dev = p2p_create_device(p2p, addr); 2139 if (dev == NULL) 2140 return NULL; 2141 2142 p2p_add_dev_info(p2p, addr, dev, msg); 2143 2144 return dev; 2145 } 2146 2147 2148 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type) 2149 { 2150 if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0) 2151 return 1; 2152 if (os_memcmp(dev_type, req_dev_type, 2) == 0 && 2153 WPA_GET_BE32(&req_dev_type[2]) == 0 && 2154 WPA_GET_BE16(&req_dev_type[6]) == 0) 2155 return 1; /* Category match with wildcard OUI/sub-category */ 2156 return 0; 2157 } 2158 2159 2160 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[], 2161 size_t num_req_dev_type) 2162 { 2163 size_t i; 2164 for (i = 0; i < num_req_dev_type; i++) { 2165 if (dev_type_match(dev_type, req_dev_type[i])) 2166 return 1; 2167 } 2168 return 0; 2169 } 2170 2171 2172 /** 2173 * p2p_match_dev_type - Match local device type with requested type 2174 * @p2p: P2P module context from p2p_init() 2175 * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs) 2176 * Returns: 1 on match, 0 on mismatch 2177 * 2178 * This function can be used to match the Requested Device Type attribute in 2179 * WPS IE with the local device types for deciding whether to reply to a Probe 2180 * Request frame. 2181 */ 2182 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps) 2183 { 2184 struct wps_parse_attr attr; 2185 size_t i; 2186 2187 if (wps_parse_msg(wps, &attr)) 2188 return 1; /* assume no Requested Device Type attributes */ 2189 2190 if (attr.num_req_dev_type == 0) 2191 return 1; /* no Requested Device Type attributes -> match */ 2192 2193 if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type, 2194 attr.num_req_dev_type)) 2195 return 1; /* Own Primary Device Type matches */ 2196 2197 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++) { 2198 if (dev_type_list_match(p2p->cfg->sec_dev_type[i], 2199 attr.req_dev_type, 2200 attr.num_req_dev_type)) 2201 return 1; /* Own Secondary Device Type matches */ 2202 } 2203 2204 /* No matching device type found */ 2205 return 0; 2206 } 2207 2208 2209 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p, 2210 const u8 *query_hash, 2211 u8 query_count) 2212 { 2213 struct wpabuf *buf; 2214 u8 *len; 2215 int pw_id = -1; 2216 size_t extra = 0; 2217 2218 #ifdef CONFIG_WIFI_DISPLAY 2219 if (p2p->wfd_ie_probe_resp) 2220 extra = wpabuf_len(p2p->wfd_ie_probe_resp); 2221 #endif /* CONFIG_WIFI_DISPLAY */ 2222 2223 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2224 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2225 2226 if (query_count) 2227 extra += MAX_SVC_ADV_IE_LEN; 2228 2229 buf = wpabuf_alloc(1000 + extra); 2230 if (buf == NULL) 2231 return NULL; 2232 2233 if (p2p->go_neg_peer) { 2234 /* Advertise immediate availability of WPS credential */ 2235 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method); 2236 } 2237 2238 if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) { 2239 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response"); 2240 wpabuf_free(buf); 2241 return NULL; 2242 } 2243 2244 #ifdef CONFIG_WIFI_DISPLAY 2245 if (p2p->wfd_ie_probe_resp) 2246 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp); 2247 #endif /* CONFIG_WIFI_DISPLAY */ 2248 2249 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]) 2250 wpabuf_put_buf(buf, 2251 p2p->vendor_elem[VENDOR_ELEM_PROBE_RESP_P2P]); 2252 2253 /* P2P IE */ 2254 len = p2p_buf_add_ie_hdr(buf); 2255 p2p_buf_add_capability(buf, p2p->dev_capab & 2256 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 2257 if (p2p->ext_listen_interval) 2258 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period, 2259 p2p->ext_listen_interval); 2260 p2p_buf_add_device_info(buf, p2p, NULL); 2261 p2p_buf_update_ie_hdr(buf, len); 2262 2263 if (query_count) { 2264 p2p_buf_add_service_instance(buf, p2p, query_count, query_hash, 2265 p2p->p2ps_adv_list); 2266 } 2267 2268 return buf; 2269 } 2270 2271 static int p2p_build_probe_resp_buf(struct p2p_data *p2p, struct wpabuf *buf, 2272 struct wpabuf *ies, 2273 const u8 *addr, int rx_freq) 2274 { 2275 struct ieee80211_mgmt *resp; 2276 u8 channel, op_class; 2277 2278 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt, 2279 u.probe_resp.variable)); 2280 2281 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) | 2282 (WLAN_FC_STYPE_PROBE_RESP << 4)); 2283 os_memcpy(resp->da, addr, ETH_ALEN); 2284 os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN); 2285 os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN); 2286 resp->u.probe_resp.beacon_int = host_to_le16(100); 2287 /* hardware or low-level driver will setup seq_ctrl and timestamp */ 2288 resp->u.probe_resp.capab_info = 2289 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE | 2290 WLAN_CAPABILITY_PRIVACY | 2291 WLAN_CAPABILITY_SHORT_SLOT_TIME); 2292 2293 wpabuf_put_u8(buf, WLAN_EID_SSID); 2294 wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN); 2295 wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 2296 2297 wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES); 2298 wpabuf_put_u8(buf, 8); 2299 wpabuf_put_u8(buf, (60 / 5) | 0x80); 2300 wpabuf_put_u8(buf, 90 / 5); 2301 wpabuf_put_u8(buf, (120 / 5) | 0x80); 2302 wpabuf_put_u8(buf, 180 / 5); 2303 wpabuf_put_u8(buf, (240 / 5) | 0x80); 2304 wpabuf_put_u8(buf, 360 / 5); 2305 wpabuf_put_u8(buf, 480 / 5); 2306 wpabuf_put_u8(buf, 540 / 5); 2307 2308 if (!rx_freq) { 2309 channel = p2p->cfg->channel; 2310 } else if (p2p_freq_to_channel(rx_freq, &op_class, &channel)) { 2311 p2p_err(p2p, "Failed to convert freq to channel"); 2312 return -1; 2313 } 2314 2315 wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS); 2316 wpabuf_put_u8(buf, 1); 2317 wpabuf_put_u8(buf, channel); 2318 2319 wpabuf_put_buf(buf, ies); 2320 2321 return 0; 2322 } 2323 2324 static int p2p_service_find_asp(struct p2p_data *p2p, const u8 *hash) 2325 { 2326 struct p2ps_advertisement *adv_data; 2327 int any_wfa; 2328 2329 p2p_dbg(p2p, "ASP find - ASP list: %p", p2p->p2ps_adv_list); 2330 2331 /* Wildcard org.wi-fi.wfds matches any WFA spec defined service */ 2332 any_wfa = os_memcmp(hash, p2p->wild_card_hash, P2PS_HASH_LEN) == 0; 2333 2334 adv_data = p2p->p2ps_adv_list; 2335 while (adv_data) { 2336 if (os_memcmp(hash, adv_data->hash, P2PS_HASH_LEN) == 0) 2337 return 1; /* exact hash match */ 2338 if (any_wfa && 2339 os_strncmp(adv_data->svc_name, P2PS_WILD_HASH_STR, 2340 os_strlen(P2PS_WILD_HASH_STR)) == 0) 2341 return 1; /* WFA service match */ 2342 adv_data = adv_data->next; 2343 } 2344 2345 return 0; 2346 } 2347 2348 2349 static enum p2p_probe_req_status 2350 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2351 const u8 *bssid, const u8 *ie, size_t ie_len, 2352 unsigned int rx_freq) 2353 { 2354 struct ieee802_11_elems elems; 2355 struct wpabuf *buf; 2356 struct p2p_message msg; 2357 struct wpabuf *ies; 2358 2359 if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) == 2360 ParseFailed) { 2361 /* Ignore invalid Probe Request frames */ 2362 p2p_dbg(p2p, "Could not parse Probe Request frame - ignore it"); 2363 return P2P_PREQ_MALFORMED; 2364 } 2365 2366 if (elems.p2p == NULL) { 2367 /* not a P2P probe - ignore it */ 2368 p2p_dbg(p2p, "Not a P2P probe - ignore it"); 2369 return P2P_PREQ_NOT_P2P; 2370 } 2371 2372 if (dst && !is_broadcast_ether_addr(dst) && 2373 os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2374 /* Not sent to the broadcast address or our P2P Device Address 2375 */ 2376 p2p_dbg(p2p, "Probe Req DA " MACSTR " not ours - ignore it", 2377 MAC2STR(dst)); 2378 return P2P_PREQ_NOT_PROCESSED; 2379 } 2380 2381 if (bssid && !is_broadcast_ether_addr(bssid)) { 2382 /* Not sent to the Wildcard BSSID */ 2383 p2p_dbg(p2p, "Probe Req BSSID " MACSTR " not wildcard - ignore it", 2384 MAC2STR(bssid)); 2385 return P2P_PREQ_NOT_PROCESSED; 2386 } 2387 2388 if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN || 2389 os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) != 2390 0) { 2391 /* not using P2P Wildcard SSID - ignore */ 2392 p2p_dbg(p2p, "Probe Req not using P2P Wildcard SSID - ignore it"); 2393 return P2P_PREQ_NOT_PROCESSED; 2394 } 2395 2396 if (supp_rates_11b_only(&elems)) { 2397 /* Indicates support for 11b rates only */ 2398 p2p_dbg(p2p, "Probe Req with 11b rates only supported - ignore it"); 2399 return P2P_PREQ_NOT_P2P; 2400 } 2401 2402 os_memset(&msg, 0, sizeof(msg)); 2403 if (p2p_parse_ies(ie, ie_len, &msg) < 0) { 2404 /* Could not parse P2P attributes */ 2405 p2p_dbg(p2p, "Could not parse P2P attributes in Probe Req - ignore it"); 2406 return P2P_PREQ_NOT_P2P; 2407 } 2408 2409 if (msg.service_hash && msg.service_hash_count) { 2410 const u8 *hash = msg.service_hash; 2411 u8 i; 2412 int p2ps_svc_found = 0; 2413 2414 p2p_dbg(p2p, "in_listen=%d drv_in_listen=%d when received P2PS Probe Request at %u MHz; own Listen channel %u, pending listen freq %u MHz", 2415 p2p->in_listen, p2p->drv_in_listen, rx_freq, 2416 p2p->cfg->channel, p2p->pending_listen_freq); 2417 2418 if (!p2p->in_listen && !p2p->drv_in_listen && 2419 p2p->pending_listen_freq && rx_freq && 2420 rx_freq != p2p->pending_listen_freq) { 2421 p2p_dbg(p2p, "Do not reply to Probe Request frame that was received on %u MHz while waiting to start Listen state on %u MHz", 2422 rx_freq, p2p->pending_listen_freq); 2423 p2p_parse_free(&msg); 2424 return P2P_PREQ_NOT_LISTEN; 2425 } 2426 2427 for (i = 0; i < msg.service_hash_count; i++) { 2428 if (p2p_service_find_asp(p2p, hash)) { 2429 p2p_dbg(p2p, "Service Hash match found: " 2430 MACSTR, MAC2STR(hash)); 2431 p2ps_svc_found = 1; 2432 break; 2433 } 2434 hash += P2PS_HASH_LEN; 2435 } 2436 2437 /* Probed hash unknown */ 2438 if (!p2ps_svc_found) { 2439 p2p_dbg(p2p, "No Service Hash match found"); 2440 p2p_parse_free(&msg); 2441 return P2P_PREQ_NOT_PROCESSED; 2442 } 2443 } else { 2444 /* This is not a P2PS Probe Request */ 2445 p2p_dbg(p2p, "No P2PS Hash in Probe Request"); 2446 2447 if (!p2p->in_listen || !p2p->drv_in_listen) { 2448 /* not in Listen state - ignore Probe Request */ 2449 p2p_dbg(p2p, "Not in Listen state (in_listen=%d drv_in_listen=%d) - ignore Probe Request", 2450 p2p->in_listen, p2p->drv_in_listen); 2451 p2p_parse_free(&msg); 2452 return P2P_PREQ_NOT_LISTEN; 2453 } 2454 } 2455 2456 if (msg.device_id && 2457 os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) { 2458 /* Device ID did not match */ 2459 p2p_dbg(p2p, "Probe Req requested Device ID " MACSTR " did not match - ignore it", 2460 MAC2STR(msg.device_id)); 2461 p2p_parse_free(&msg); 2462 return P2P_PREQ_NOT_PROCESSED; 2463 } 2464 2465 /* Check Requested Device Type match */ 2466 if (msg.wps_attributes && 2467 !p2p_match_dev_type(p2p, msg.wps_attributes)) { 2468 /* No match with Requested Device Type */ 2469 p2p_dbg(p2p, "Probe Req requested Device Type did not match - ignore it"); 2470 p2p_parse_free(&msg); 2471 return P2P_PREQ_NOT_PROCESSED; 2472 } 2473 2474 if (!p2p->cfg->send_probe_resp) { 2475 /* Response generated elsewhere */ 2476 p2p_dbg(p2p, "Probe Resp generated elsewhere - do not generate additional response"); 2477 p2p_parse_free(&msg); 2478 return P2P_PREQ_NOT_PROCESSED; 2479 } 2480 2481 p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state"); 2482 2483 /* 2484 * We do not really have a specific BSS that this frame is advertising, 2485 * so build a frame that has some information in valid format. This is 2486 * really only used for discovery purposes, not to learn exact BSS 2487 * parameters. 2488 */ 2489 ies = p2p_build_probe_resp_ies(p2p, msg.service_hash, 2490 msg.service_hash_count); 2491 p2p_parse_free(&msg); 2492 if (ies == NULL) 2493 return P2P_PREQ_NOT_PROCESSED; 2494 2495 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 2496 if (buf == NULL) { 2497 wpabuf_free(ies); 2498 return P2P_PREQ_NOT_PROCESSED; 2499 } 2500 2501 if (p2p_build_probe_resp_buf(p2p, buf, ies, addr, rx_freq)) { 2502 wpabuf_free(ies); 2503 wpabuf_free(buf); 2504 return P2P_PREQ_NOT_PROCESSED; 2505 } 2506 2507 wpabuf_free(ies); 2508 2509 p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf, rx_freq); 2510 2511 wpabuf_free(buf); 2512 2513 return P2P_PREQ_PROCESSED; 2514 } 2515 2516 2517 enum p2p_probe_req_status 2518 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst, 2519 const u8 *bssid, const u8 *ie, size_t ie_len, 2520 unsigned int rx_freq, int p2p_lo_started) 2521 { 2522 enum p2p_probe_req_status res; 2523 2524 p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len); 2525 2526 if (p2p_lo_started) { 2527 p2p_dbg(p2p, 2528 "Probe Response is offloaded, do not reply Probe Request"); 2529 return P2P_PREQ_PROCESSED; 2530 } 2531 2532 res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len, rx_freq); 2533 if (res != P2P_PREQ_PROCESSED && res != P2P_PREQ_NOT_PROCESSED) 2534 return res; 2535 2536 /* 2537 * Activate a pending GO Negotiation/Invite flow if a received Probe 2538 * Request frame is from an expected peer. Some devices may share the 2539 * same address for P2P and non-P2P STA running simultaneously. The 2540 * P2P_PREQ_PROCESSED and P2P_PREQ_NOT_PROCESSED p2p_reply_probe() 2541 * return values verified above ensure we are handling a Probe Request 2542 * frame from a P2P peer. 2543 */ 2544 if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) && 2545 p2p->go_neg_peer && 2546 os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN) 2547 == 0 && 2548 !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 2549 /* Received a Probe Request from GO Negotiation peer */ 2550 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout"); 2551 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 2552 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL); 2553 return res; 2554 } 2555 2556 if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) && 2557 p2p->invite_peer && 2558 (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) && 2559 os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN) 2560 == 0) { 2561 /* Received a Probe Request from Invite peer */ 2562 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout"); 2563 eloop_cancel_timeout(p2p_invite_start, p2p, NULL); 2564 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL); 2565 return res; 2566 } 2567 2568 return res; 2569 } 2570 2571 2572 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid, 2573 u8 *buf, size_t len, struct wpabuf *p2p_ie) 2574 { 2575 struct wpabuf *tmp; 2576 u8 *lpos; 2577 size_t tmplen; 2578 int res; 2579 u8 group_capab; 2580 struct p2p_message msg; 2581 2582 if (p2p_ie == NULL) 2583 return 0; /* WLAN AP is not a P2P manager */ 2584 2585 os_memset(&msg, 0, sizeof(msg)); 2586 if (p2p_parse_p2p_ie(p2p_ie, &msg) < 0) 2587 return 0; 2588 2589 p2p_dbg(p2p, "BSS P2P manageability %s", 2590 msg.manageability ? "enabled" : "disabled"); 2591 2592 if (!msg.manageability) 2593 return 0; 2594 2595 /* 2596 * (Re)Association Request - P2P IE 2597 * P2P Capability attribute (shall be present) 2598 * P2P Interface attribute (present if concurrent device and 2599 * P2P Management is enabled) 2600 */ 2601 tmp = wpabuf_alloc(200); 2602 if (tmp == NULL) 2603 return -1; 2604 2605 lpos = p2p_buf_add_ie_hdr(tmp); 2606 group_capab = 0; 2607 if (p2p->num_groups > 0) { 2608 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER; 2609 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2610 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) && 2611 p2p->cross_connect) 2612 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 2613 } 2614 p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab); 2615 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) && 2616 (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED)) 2617 p2p_buf_add_p2p_interface(tmp, p2p); 2618 p2p_buf_update_ie_hdr(tmp, lpos); 2619 2620 tmplen = wpabuf_len(tmp); 2621 if (tmplen > len) 2622 res = -1; 2623 else { 2624 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2625 res = tmplen; 2626 } 2627 wpabuf_free(tmp); 2628 2629 return res; 2630 } 2631 2632 2633 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf, 2634 size_t len, int p2p_group, struct wpabuf *p2p_ie) 2635 { 2636 struct wpabuf *tmp; 2637 u8 *lpos; 2638 struct p2p_device *peer; 2639 size_t tmplen; 2640 int res; 2641 size_t extra = 0; 2642 2643 if (!p2p_group) 2644 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie); 2645 2646 #ifdef CONFIG_WIFI_DISPLAY 2647 if (p2p->wfd_ie_assoc_req) 2648 extra = wpabuf_len(p2p->wfd_ie_assoc_req); 2649 #endif /* CONFIG_WIFI_DISPLAY */ 2650 2651 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2652 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2653 2654 /* 2655 * (Re)Association Request - P2P IE 2656 * P2P Capability attribute (shall be present) 2657 * Extended Listen Timing (may be present) 2658 * P2P Device Info attribute (shall be present) 2659 */ 2660 tmp = wpabuf_alloc(200 + extra); 2661 if (tmp == NULL) 2662 return -1; 2663 2664 #ifdef CONFIG_WIFI_DISPLAY 2665 if (p2p->wfd_ie_assoc_req) 2666 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req); 2667 #endif /* CONFIG_WIFI_DISPLAY */ 2668 2669 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]) 2670 wpabuf_put_buf(tmp, 2671 p2p->vendor_elem[VENDOR_ELEM_P2P_ASSOC_REQ]); 2672 2673 peer = bssid ? p2p_get_device(p2p, bssid) : NULL; 2674 2675 lpos = p2p_buf_add_ie_hdr(tmp); 2676 p2p_buf_add_capability(tmp, p2p->dev_capab, 0); 2677 if (p2p->ext_listen_interval) 2678 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period, 2679 p2p->ext_listen_interval); 2680 p2p_buf_add_device_info(tmp, p2p, peer); 2681 p2p_buf_update_ie_hdr(tmp, lpos); 2682 2683 tmplen = wpabuf_len(tmp); 2684 if (tmplen > len) 2685 res = -1; 2686 else { 2687 os_memcpy(buf, wpabuf_head(tmp), tmplen); 2688 res = tmplen; 2689 } 2690 wpabuf_free(tmp); 2691 2692 return res; 2693 } 2694 2695 2696 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end) 2697 { 2698 struct wpabuf *p2p_ie; 2699 int ret; 2700 2701 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE); 2702 if (p2p_ie == NULL) 2703 return 0; 2704 2705 ret = p2p_attr_text(p2p_ie, buf, end); 2706 wpabuf_free(p2p_ie); 2707 return ret; 2708 } 2709 2710 2711 struct p2ps_advertisement * 2712 p2p_service_p2ps_id(struct p2p_data *p2p, u32 adv_id) 2713 { 2714 struct p2ps_advertisement *adv_data; 2715 2716 if (!p2p) 2717 return NULL; 2718 2719 adv_data = p2p->p2ps_adv_list; 2720 while (adv_data) { 2721 if (adv_data->id == adv_id) 2722 return adv_data; 2723 adv_data = adv_data->next; 2724 } 2725 2726 return NULL; 2727 } 2728 2729 2730 int p2p_service_del_asp(struct p2p_data *p2p, u32 adv_id) 2731 { 2732 struct p2ps_advertisement *adv_data; 2733 struct p2ps_advertisement **prior; 2734 2735 if (!p2p) 2736 return -1; 2737 2738 adv_data = p2p->p2ps_adv_list; 2739 prior = &p2p->p2ps_adv_list; 2740 while (adv_data) { 2741 if (adv_data->id == adv_id) { 2742 p2p_dbg(p2p, "Delete ASP adv_id=0x%x", adv_id); 2743 *prior = adv_data->next; 2744 os_free(adv_data); 2745 return 0; 2746 } 2747 prior = &adv_data->next; 2748 adv_data = adv_data->next; 2749 } 2750 2751 return -1; 2752 } 2753 2754 2755 int p2p_service_add_asp(struct p2p_data *p2p, int auto_accept, u32 adv_id, 2756 const char *adv_str, u8 svc_state, u16 config_methods, 2757 const char *svc_info, const u8 *cpt_priority) 2758 { 2759 struct p2ps_advertisement *adv_data, *tmp, **prev; 2760 u8 buf[P2PS_HASH_LEN]; 2761 size_t adv_data_len, adv_len, info_len = 0; 2762 int i; 2763 2764 if (!p2p || !adv_str || !adv_str[0] || !cpt_priority) 2765 return -1; 2766 2767 if (!(config_methods & p2p->cfg->config_methods)) { 2768 p2p_dbg(p2p, "Config methods not supported svc: 0x%x dev: 0x%x", 2769 config_methods, p2p->cfg->config_methods); 2770 return -1; 2771 } 2772 2773 if (!p2ps_gen_hash(p2p, adv_str, buf)) 2774 return -1; 2775 2776 if (svc_info) 2777 info_len = os_strlen(svc_info); 2778 adv_len = os_strlen(adv_str); 2779 adv_data_len = sizeof(struct p2ps_advertisement) + adv_len + 1 + 2780 info_len + 1; 2781 2782 adv_data = os_zalloc(adv_data_len); 2783 if (!adv_data) 2784 return -1; 2785 2786 os_memcpy(adv_data->hash, buf, P2PS_HASH_LEN); 2787 adv_data->id = adv_id; 2788 adv_data->state = svc_state; 2789 adv_data->config_methods = config_methods & p2p->cfg->config_methods; 2790 adv_data->auto_accept = (u8) auto_accept; 2791 os_memcpy(adv_data->svc_name, adv_str, adv_len); 2792 2793 for (i = 0; cpt_priority[i] && i < P2PS_FEATURE_CAPAB_CPT_MAX; i++) { 2794 adv_data->cpt_priority[i] = cpt_priority[i]; 2795 adv_data->cpt_mask |= cpt_priority[i]; 2796 } 2797 2798 if (svc_info && info_len) { 2799 adv_data->svc_info = &adv_data->svc_name[adv_len + 1]; 2800 os_memcpy(adv_data->svc_info, svc_info, info_len); 2801 } 2802 2803 /* 2804 * Group Advertisements by service string. They do not need to be 2805 * sorted, but groups allow easier Probe Response instance grouping 2806 */ 2807 tmp = p2p->p2ps_adv_list; 2808 prev = &p2p->p2ps_adv_list; 2809 while (tmp) { 2810 if (tmp->id == adv_data->id) { 2811 if (os_strcmp(tmp->svc_name, adv_data->svc_name) != 0) { 2812 os_free(adv_data); 2813 return -1; 2814 } 2815 adv_data->next = tmp->next; 2816 *prev = adv_data; 2817 os_free(tmp); 2818 goto inserted; 2819 } else { 2820 if (os_strcmp(tmp->svc_name, adv_data->svc_name) == 0) { 2821 adv_data->next = tmp->next; 2822 tmp->next = adv_data; 2823 goto inserted; 2824 } 2825 } 2826 prev = &tmp->next; 2827 tmp = tmp->next; 2828 } 2829 2830 /* No svc_name match found */ 2831 adv_data->next = p2p->p2ps_adv_list; 2832 p2p->p2ps_adv_list = adv_data; 2833 2834 inserted: 2835 p2p_dbg(p2p, 2836 "Added ASP advertisement adv_id=0x%x config_methods=0x%x svc_state=0x%x adv_str='%s' cpt_mask=0x%x", 2837 adv_id, adv_data->config_methods, svc_state, adv_str, 2838 adv_data->cpt_mask); 2839 2840 return 0; 2841 } 2842 2843 2844 void p2p_service_flush_asp(struct p2p_data *p2p) 2845 { 2846 struct p2ps_advertisement *adv, *prev; 2847 2848 if (!p2p) 2849 return; 2850 2851 adv = p2p->p2ps_adv_list; 2852 while (adv) { 2853 prev = adv; 2854 adv = adv->next; 2855 os_free(prev); 2856 } 2857 2858 p2p->p2ps_adv_list = NULL; 2859 p2ps_prov_free(p2p); 2860 p2p_dbg(p2p, "All ASP advertisements flushed"); 2861 } 2862 2863 2864 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr) 2865 { 2866 struct p2p_message msg; 2867 2868 os_memset(&msg, 0, sizeof(msg)); 2869 if (p2p_parse_p2p_ie(p2p_ie, &msg)) 2870 return -1; 2871 2872 if (msg.p2p_device_addr) { 2873 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN); 2874 return 0; 2875 } else if (msg.device_id) { 2876 os_memcpy(dev_addr, msg.device_id, ETH_ALEN); 2877 return 0; 2878 } 2879 return -1; 2880 } 2881 2882 2883 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr) 2884 { 2885 struct wpabuf *p2p_ie; 2886 int ret; 2887 2888 p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, 2889 P2P_IE_VENDOR_TYPE); 2890 if (p2p_ie == NULL) 2891 return -1; 2892 ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr); 2893 wpabuf_free(p2p_ie); 2894 return ret; 2895 } 2896 2897 2898 static void p2p_clear_go_neg(struct p2p_data *p2p) 2899 { 2900 p2p->go_neg_peer = NULL; 2901 p2p_clear_timeout(p2p); 2902 p2p_set_state(p2p, P2P_IDLE); 2903 } 2904 2905 2906 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr) 2907 { 2908 if (p2p->go_neg_peer == NULL) { 2909 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification"); 2910 return; /* No pending Group Formation */ 2911 } 2912 2913 if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) != 2914 0) { 2915 p2p_dbg(p2p, "Ignore WPS registration success notification for " 2916 MACSTR " (GO Negotiation peer " MACSTR ")", 2917 MAC2STR(mac_addr), 2918 MAC2STR(p2p->go_neg_peer->intended_addr)); 2919 return; /* Ignore unexpected peer address */ 2920 } 2921 2922 p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR, 2923 MAC2STR(mac_addr)); 2924 2925 p2p_clear_go_neg(p2p); 2926 } 2927 2928 2929 void p2p_group_formation_failed(struct p2p_data *p2p) 2930 { 2931 if (p2p->go_neg_peer == NULL) { 2932 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification"); 2933 return; /* No pending Group Formation */ 2934 } 2935 2936 p2p_dbg(p2p, "Group Formation failed with " MACSTR, 2937 MAC2STR(p2p->go_neg_peer->intended_addr)); 2938 2939 p2p_clear_go_neg(p2p); 2940 } 2941 2942 2943 struct p2p_data * p2p_init(const struct p2p_config *cfg) 2944 { 2945 struct p2p_data *p2p; 2946 2947 if (cfg->max_peers < 1 || 2948 cfg->passphrase_len < 8 || cfg->passphrase_len > 63) 2949 return NULL; 2950 2951 p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg)); 2952 if (p2p == NULL) 2953 return NULL; 2954 p2p->cfg = (struct p2p_config *) (p2p + 1); 2955 os_memcpy(p2p->cfg, cfg, sizeof(*cfg)); 2956 if (cfg->dev_name) 2957 p2p->cfg->dev_name = os_strdup(cfg->dev_name); 2958 if (cfg->manufacturer) 2959 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer); 2960 if (cfg->model_name) 2961 p2p->cfg->model_name = os_strdup(cfg->model_name); 2962 if (cfg->model_number) 2963 p2p->cfg->model_number = os_strdup(cfg->model_number); 2964 if (cfg->serial_number) 2965 p2p->cfg->serial_number = os_strdup(cfg->serial_number); 2966 if (cfg->pref_chan) { 2967 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan * 2968 sizeof(struct p2p_channel)); 2969 if (p2p->cfg->pref_chan) { 2970 os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan, 2971 cfg->num_pref_chan * 2972 sizeof(struct p2p_channel)); 2973 } else 2974 p2p->cfg->num_pref_chan = 0; 2975 } 2976 2977 p2ps_gen_hash(p2p, P2PS_WILD_HASH_STR, p2p->wild_card_hash); 2978 2979 p2p->min_disc_int = 1; 2980 p2p->max_disc_int = 3; 2981 p2p->max_disc_tu = -1; 2982 2983 if (os_get_random(&p2p->next_tie_breaker, 1) < 0) 2984 p2p->next_tie_breaker = 0; 2985 p2p->next_tie_breaker &= 0x01; 2986 if (cfg->sd_request) 2987 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 2988 p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE; 2989 if (cfg->concurrent_operations) 2990 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER; 2991 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 2992 2993 dl_list_init(&p2p->devices); 2994 2995 p2p->go_timeout = 100; 2996 p2p->client_timeout = 20; 2997 p2p->num_p2p_sd_queries = 0; 2998 2999 p2p_dbg(p2p, "initialized"); 3000 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 3001 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 3002 3003 return p2p; 3004 } 3005 3006 3007 void p2p_deinit(struct p2p_data *p2p) 3008 { 3009 #ifdef CONFIG_WIFI_DISPLAY 3010 wpabuf_free(p2p->wfd_ie_beacon); 3011 wpabuf_free(p2p->wfd_ie_probe_req); 3012 wpabuf_free(p2p->wfd_ie_probe_resp); 3013 wpabuf_free(p2p->wfd_ie_assoc_req); 3014 wpabuf_free(p2p->wfd_ie_invitation); 3015 wpabuf_free(p2p->wfd_ie_prov_disc_req); 3016 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 3017 wpabuf_free(p2p->wfd_ie_go_neg); 3018 wpabuf_free(p2p->wfd_dev_info); 3019 wpabuf_free(p2p->wfd_assoc_bssid); 3020 wpabuf_free(p2p->wfd_coupled_sink_info); 3021 wpabuf_free(p2p->wfd_r2_dev_info); 3022 #endif /* CONFIG_WIFI_DISPLAY */ 3023 3024 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3025 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL); 3026 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3027 p2p_flush(p2p); 3028 p2p_free_req_dev_types(p2p); 3029 os_free(p2p->cfg->dev_name); 3030 os_free(p2p->cfg->manufacturer); 3031 os_free(p2p->cfg->model_name); 3032 os_free(p2p->cfg->model_number); 3033 os_free(p2p->cfg->serial_number); 3034 os_free(p2p->cfg->pref_chan); 3035 os_free(p2p->groups); 3036 p2ps_prov_free(p2p); 3037 wpabuf_free(p2p->sd_resp); 3038 p2p_remove_wps_vendor_extensions(p2p); 3039 os_free(p2p->no_go_freq.range); 3040 p2p_service_flush_asp(p2p); 3041 3042 os_free(p2p); 3043 } 3044 3045 3046 void p2p_flush(struct p2p_data *p2p) 3047 { 3048 struct p2p_device *dev, *prev; 3049 3050 p2p_ext_listen(p2p, 0, 0); 3051 p2p_stop_find(p2p); 3052 dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device, 3053 list) { 3054 dl_list_del(&dev->list); 3055 p2p_device_free(p2p, dev); 3056 } 3057 p2p_free_sd_queries(p2p); 3058 os_free(p2p->after_scan_tx); 3059 p2p->after_scan_tx = NULL; 3060 p2p->ssid_set = 0; 3061 p2ps_prov_free(p2p); 3062 p2p_reset_pending_pd(p2p); 3063 p2p->override_pref_op_class = 0; 3064 p2p->override_pref_channel = 0; 3065 } 3066 3067 3068 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr) 3069 { 3070 struct p2p_device *dev; 3071 3072 dev = p2p_get_device(p2p, addr); 3073 if (dev == NULL) 3074 return -1; 3075 3076 p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr)); 3077 3078 if (p2p->go_neg_peer == dev) { 3079 eloop_cancel_timeout(p2p_go_neg_wait_timeout, p2p, NULL); 3080 p2p->go_neg_peer = NULL; 3081 } 3082 3083 dev->wps_method = WPS_NOT_READY; 3084 dev->oob_pw_id = 0; 3085 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE; 3086 dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM; 3087 3088 /* Check if after_scan_tx is for this peer. If so free it */ 3089 if (p2p->after_scan_tx && 3090 os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) { 3091 os_free(p2p->after_scan_tx); 3092 p2p->after_scan_tx = NULL; 3093 } 3094 3095 return 0; 3096 } 3097 3098 3099 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name) 3100 { 3101 os_free(p2p->cfg->dev_name); 3102 if (dev_name) { 3103 p2p->cfg->dev_name = os_strdup(dev_name); 3104 if (p2p->cfg->dev_name == NULL) 3105 return -1; 3106 } else 3107 p2p->cfg->dev_name = NULL; 3108 return 0; 3109 } 3110 3111 3112 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer) 3113 { 3114 os_free(p2p->cfg->manufacturer); 3115 p2p->cfg->manufacturer = NULL; 3116 if (manufacturer) { 3117 p2p->cfg->manufacturer = os_strdup(manufacturer); 3118 if (p2p->cfg->manufacturer == NULL) 3119 return -1; 3120 } 3121 3122 return 0; 3123 } 3124 3125 3126 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name) 3127 { 3128 os_free(p2p->cfg->model_name); 3129 p2p->cfg->model_name = NULL; 3130 if (model_name) { 3131 p2p->cfg->model_name = os_strdup(model_name); 3132 if (p2p->cfg->model_name == NULL) 3133 return -1; 3134 } 3135 3136 return 0; 3137 } 3138 3139 3140 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number) 3141 { 3142 os_free(p2p->cfg->model_number); 3143 p2p->cfg->model_number = NULL; 3144 if (model_number) { 3145 p2p->cfg->model_number = os_strdup(model_number); 3146 if (p2p->cfg->model_number == NULL) 3147 return -1; 3148 } 3149 3150 return 0; 3151 } 3152 3153 3154 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number) 3155 { 3156 os_free(p2p->cfg->serial_number); 3157 p2p->cfg->serial_number = NULL; 3158 if (serial_number) { 3159 p2p->cfg->serial_number = os_strdup(serial_number); 3160 if (p2p->cfg->serial_number == NULL) 3161 return -1; 3162 } 3163 3164 return 0; 3165 } 3166 3167 3168 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods) 3169 { 3170 p2p->cfg->config_methods = config_methods; 3171 } 3172 3173 3174 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid) 3175 { 3176 os_memcpy(p2p->cfg->uuid, uuid, 16); 3177 } 3178 3179 3180 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type) 3181 { 3182 os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8); 3183 return 0; 3184 } 3185 3186 3187 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8], 3188 size_t num_dev_types) 3189 { 3190 if (num_dev_types > P2P_SEC_DEVICE_TYPES) 3191 num_dev_types = P2P_SEC_DEVICE_TYPES; 3192 p2p->cfg->num_sec_dev_types = num_dev_types; 3193 os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8); 3194 return 0; 3195 } 3196 3197 3198 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p) 3199 { 3200 int i; 3201 3202 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3203 wpabuf_free(p2p->wps_vendor_ext[i]); 3204 p2p->wps_vendor_ext[i] = NULL; 3205 } 3206 } 3207 3208 3209 int p2p_add_wps_vendor_extension(struct p2p_data *p2p, 3210 const struct wpabuf *vendor_ext) 3211 { 3212 int i; 3213 3214 if (vendor_ext == NULL) 3215 return -1; 3216 3217 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) { 3218 if (p2p->wps_vendor_ext[i] == NULL) 3219 break; 3220 } 3221 if (i >= P2P_MAX_WPS_VENDOR_EXT) 3222 return -1; 3223 3224 p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext); 3225 if (p2p->wps_vendor_ext[i] == NULL) 3226 return -1; 3227 3228 return 0; 3229 } 3230 3231 3232 int p2p_set_country(struct p2p_data *p2p, const char *country) 3233 { 3234 os_memcpy(p2p->cfg->country, country, 3); 3235 return 0; 3236 } 3237 3238 3239 static int p2p_pre_find_operation(struct p2p_data *p2p, struct p2p_device *dev) 3240 { 3241 int res; 3242 3243 if (dev->sd_pending_bcast_queries == 0) { 3244 /* Initialize with total number of registered broadcast 3245 * SD queries. */ 3246 dev->sd_pending_bcast_queries = p2p->num_p2p_sd_queries; 3247 } 3248 3249 res = p2p_start_sd(p2p, dev); 3250 if (res == -2) 3251 return -2; 3252 if (res == 0) 3253 return 1; 3254 3255 if (dev->req_config_methods && 3256 !(dev->flags & P2P_DEV_PD_FOR_JOIN)) { 3257 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3258 MACSTR " (config methods 0x%x)", 3259 MAC2STR(dev->info.p2p_device_addr), 3260 dev->req_config_methods); 3261 if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0) 3262 return 1; 3263 } 3264 3265 return 0; 3266 } 3267 3268 3269 void p2p_continue_find(struct p2p_data *p2p) 3270 { 3271 struct p2p_device *dev; 3272 int found, res; 3273 3274 p2p_set_state(p2p, P2P_SEARCH); 3275 3276 /* Continue from the device following the last iteration */ 3277 found = 0; 3278 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3279 if (dev == p2p->last_p2p_find_oper) { 3280 found = 1; 3281 continue; 3282 } 3283 if (!found) 3284 continue; 3285 res = p2p_pre_find_operation(p2p, dev); 3286 if (res > 0) { 3287 p2p->last_p2p_find_oper = dev; 3288 return; 3289 } 3290 if (res == -2) 3291 goto skip_sd; 3292 } 3293 3294 /* 3295 * Wrap around to the beginning of the list and continue until the last 3296 * iteration device. 3297 */ 3298 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3299 res = p2p_pre_find_operation(p2p, dev); 3300 if (res > 0) { 3301 p2p->last_p2p_find_oper = dev; 3302 return; 3303 } 3304 if (res == -2) 3305 goto skip_sd; 3306 if (dev == p2p->last_p2p_find_oper) 3307 break; 3308 } 3309 3310 skip_sd: 3311 os_memset(p2p->sd_query_no_ack, 0, ETH_ALEN); 3312 p2p_listen_in_find(p2p, 1); 3313 } 3314 3315 3316 static void p2p_sd_cb(struct p2p_data *p2p, int success) 3317 { 3318 p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d", 3319 success); 3320 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3321 3322 if (!success) { 3323 if (p2p->sd_peer) { 3324 if (is_zero_ether_addr(p2p->sd_query_no_ack)) { 3325 os_memcpy(p2p->sd_query_no_ack, 3326 p2p->sd_peer->info.p2p_device_addr, 3327 ETH_ALEN); 3328 p2p_dbg(p2p, 3329 "First SD Query no-ACK in this search iteration: " 3330 MACSTR, MAC2STR(p2p->sd_query_no_ack)); 3331 } 3332 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3333 } 3334 p2p->sd_peer = NULL; 3335 if (p2p->state != P2P_IDLE) 3336 p2p_continue_find(p2p); 3337 return; 3338 } 3339 3340 if (p2p->sd_peer == NULL) { 3341 p2p_dbg(p2p, "No SD peer entry known"); 3342 if (p2p->state != P2P_IDLE) 3343 p2p_continue_find(p2p); 3344 return; 3345 } 3346 3347 if (p2p->sd_query && p2p->sd_query->for_all_peers) { 3348 /* Update the pending broadcast SD query count for this device 3349 */ 3350 p2p->sd_peer->sd_pending_bcast_queries--; 3351 3352 /* 3353 * If there are no pending broadcast queries for this device, 3354 * mark it as done (-1). 3355 */ 3356 if (p2p->sd_peer->sd_pending_bcast_queries == 0) 3357 p2p->sd_peer->sd_pending_bcast_queries = -1; 3358 } 3359 3360 /* Wait for response from the peer */ 3361 p2p_set_state(p2p, P2P_SD_DURING_FIND); 3362 p2p_set_timeout(p2p, 0, 200000); 3363 } 3364 3365 3366 /** 3367 * p2p_retry_pd - Retry any pending provision disc requests in IDLE state 3368 * @p2p: P2P module context from p2p_init() 3369 */ 3370 static void p2p_retry_pd(struct p2p_data *p2p) 3371 { 3372 struct p2p_device *dev; 3373 3374 /* 3375 * Retry the prov disc req attempt only for the peer that the user had 3376 * requested. 3377 */ 3378 3379 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 3380 if (os_memcmp(p2p->pending_pd_devaddr, 3381 dev->info.p2p_device_addr, ETH_ALEN) != 0) 3382 continue; 3383 if (!dev->req_config_methods) 3384 continue; 3385 3386 p2p_dbg(p2p, "Send pending Provision Discovery Request to " 3387 MACSTR " (config methods 0x%x)", 3388 MAC2STR(dev->info.p2p_device_addr), 3389 dev->req_config_methods); 3390 p2p_send_prov_disc_req(p2p, dev, 3391 dev->flags & P2P_DEV_PD_FOR_JOIN, 3392 p2p->pd_force_freq); 3393 return; 3394 } 3395 } 3396 3397 3398 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success) 3399 { 3400 p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d", 3401 success); 3402 3403 /* 3404 * Postpone resetting the pending action state till after we actually 3405 * time out. This allows us to take some action like notifying any 3406 * interested parties about no response to the request. 3407 * 3408 * When the timer (below) goes off we check in IDLE, SEARCH, or 3409 * LISTEN_ONLY state, which are the only allowed states to issue a PD 3410 * requests in, if this was still pending and then raise notification. 3411 */ 3412 3413 if (!success) { 3414 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3415 3416 if (p2p->user_initiated_pd && 3417 (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY)) 3418 { 3419 /* Retry request from timeout to avoid busy loops */ 3420 p2p->pending_action_state = P2P_PENDING_PD; 3421 p2p_set_timeout(p2p, 0, 50000); 3422 } else if (p2p->state != P2P_IDLE) 3423 p2p_continue_find(p2p); 3424 else if (p2p->user_initiated_pd) { 3425 p2p->pending_action_state = P2P_PENDING_PD; 3426 p2p_set_timeout(p2p, 0, 300000); 3427 } 3428 return; 3429 } 3430 3431 /* 3432 * If after PD Request the peer doesn't expect to receive PD Response 3433 * the PD Request ACK indicates a completion of the current PD. This 3434 * happens only on the advertiser side sending the follow-on PD Request 3435 * with the status different than 12 (Success: accepted by user). 3436 */ 3437 if (p2p->p2ps_prov && !p2p->p2ps_prov->pd_seeker && 3438 p2p->p2ps_prov->status != P2P_SC_SUCCESS_DEFERRED) { 3439 p2p_dbg(p2p, "P2PS PD completion on Follow-on PD Request ACK"); 3440 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 3446 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3447 3448 if (p2p->cfg->p2ps_prov_complete) { 3449 p2p->cfg->p2ps_prov_complete( 3450 p2p->cfg->cb_ctx, 3451 p2p->p2ps_prov->status, 3452 p2p->p2ps_prov->adv_mac, 3453 p2p->p2ps_prov->adv_mac, 3454 p2p->p2ps_prov->session_mac, 3455 NULL, p2p->p2ps_prov->adv_id, 3456 p2p->p2ps_prov->session_id, 3457 0, 0, NULL, 0, 0, 0, 3458 NULL, NULL, 0, 0, NULL, 0); 3459 } 3460 3461 if (p2p->user_initiated_pd) 3462 p2p_reset_pending_pd(p2p); 3463 3464 p2ps_prov_free(p2p); 3465 return; 3466 } 3467 3468 /* 3469 * This postponing, of resetting pending_action_state, needs to be 3470 * done only for user initiated PD requests and not internal ones. 3471 */ 3472 if (p2p->user_initiated_pd) 3473 p2p->pending_action_state = P2P_PENDING_PD; 3474 else 3475 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3476 3477 /* Wait for response from the peer */ 3478 if (p2p->state == P2P_SEARCH) 3479 p2p_set_state(p2p, P2P_PD_DURING_FIND); 3480 p2p_set_timeout(p2p, 0, 200000); 3481 } 3482 3483 3484 static int p2p_check_after_scan_tx_continuation(struct p2p_data *p2p) 3485 { 3486 if (p2p->after_scan_tx_in_progress) { 3487 p2p->after_scan_tx_in_progress = 0; 3488 if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING && 3489 p2p_run_after_scan(p2p)) 3490 return 1; 3491 if (p2p->state == P2P_SEARCH) { 3492 p2p_dbg(p2p, "Continue find after after_scan_tx completion"); 3493 p2p_continue_find(p2p); 3494 } 3495 } 3496 3497 return 0; 3498 } 3499 3500 3501 static void p2p_prov_disc_resp_cb(struct p2p_data *p2p, int success) 3502 { 3503 p2p_dbg(p2p, "Provision Discovery Response TX callback: success=%d", 3504 success); 3505 3506 if (p2p->send_action_in_progress) { 3507 p2p->send_action_in_progress = 0; 3508 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3509 } 3510 3511 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3512 3513 if (!success) 3514 goto continue_search; 3515 3516 if (!p2p->cfg->prov_disc_resp_cb || 3517 p2p->cfg->prov_disc_resp_cb(p2p->cfg->cb_ctx) < 1) 3518 goto continue_search; 3519 3520 p2p_dbg(p2p, 3521 "Post-Provision Discovery operations started - do not try to continue other P2P operations"); 3522 return; 3523 3524 continue_search: 3525 p2p_check_after_scan_tx_continuation(p2p); 3526 } 3527 3528 3529 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq, 3530 struct os_reltime *rx_time, int level, const u8 *ies, 3531 size_t ies_len) 3532 { 3533 if (os_reltime_before(rx_time, &p2p->find_start)) { 3534 /* 3535 * The driver may have cached (e.g., in cfg80211 BSS table) the 3536 * scan results for relatively long time. To avoid reporting 3537 * stale information, update P2P peers only based on results 3538 * that have based on frames received after the last p2p_find 3539 * operation was started. 3540 */ 3541 p2p_dbg(p2p, "Ignore old scan result for " MACSTR 3542 " (rx_time=%u.%06u find_start=%u.%06u)", 3543 MAC2STR(bssid), (unsigned int) rx_time->sec, 3544 (unsigned int) rx_time->usec, 3545 (unsigned int) p2p->find_start.sec, 3546 (unsigned int) p2p->find_start.usec); 3547 return 0; 3548 } 3549 3550 p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1); 3551 3552 return 0; 3553 } 3554 3555 3556 void p2p_scan_res_handled(struct p2p_data *p2p) 3557 { 3558 if (!p2p->p2p_scan_running) { 3559 p2p_dbg(p2p, "p2p_scan was not running, but scan results received"); 3560 } 3561 p2p->p2p_scan_running = 0; 3562 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL); 3563 3564 if (p2p_run_after_scan(p2p)) 3565 return; 3566 if (p2p->state == P2P_SEARCH) 3567 p2p_continue_find(p2p); 3568 } 3569 3570 3571 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id, 3572 unsigned int bands) 3573 { 3574 u8 dev_capab; 3575 u8 *len; 3576 3577 #ifdef CONFIG_WIFI_DISPLAY 3578 if (p2p->wfd_ie_probe_req) 3579 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req); 3580 #endif /* CONFIG_WIFI_DISPLAY */ 3581 3582 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3583 wpabuf_put_buf(ies, 3584 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3585 3586 len = p2p_buf_add_ie_hdr(ies); 3587 3588 dev_capab = p2p->dev_capab & ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 3589 3590 /* P2PS requires Probe Request frames to include SD bit */ 3591 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3592 dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY; 3593 3594 p2p_buf_add_capability(ies, dev_capab, 0); 3595 3596 if (dev_id) 3597 p2p_buf_add_device_id(ies, dev_id); 3598 if (p2p->cfg->reg_class && p2p->cfg->channel) 3599 p2p_buf_add_listen_channel(ies, p2p->cfg->country, 3600 p2p->cfg->reg_class, 3601 p2p->cfg->channel); 3602 if (p2p->ext_listen_interval) 3603 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period, 3604 p2p->ext_listen_interval); 3605 3606 if (bands & BAND_60_GHZ) 3607 p2p_buf_add_device_info(ies, p2p, NULL); 3608 3609 if (p2p->p2ps_seek && p2p->p2ps_seek_count) 3610 p2p_buf_add_service_hash(ies, p2p); 3611 3612 /* TODO: p2p_buf_add_operating_channel() if GO */ 3613 p2p_buf_update_ie_hdr(ies, len); 3614 } 3615 3616 3617 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p) 3618 { 3619 size_t len = 100; 3620 3621 #ifdef CONFIG_WIFI_DISPLAY 3622 if (p2p && p2p->wfd_ie_probe_req) 3623 len += wpabuf_len(p2p->wfd_ie_probe_req); 3624 #endif /* CONFIG_WIFI_DISPLAY */ 3625 3626 if (p2p && p2p->vendor_elem && 3627 p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]) 3628 len += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_PROBE_REQ_P2P]); 3629 3630 return len; 3631 } 3632 3633 3634 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end) 3635 { 3636 return p2p_attr_text(p2p_ie, buf, end); 3637 } 3638 3639 3640 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success) 3641 { 3642 struct p2p_device *dev = p2p->go_neg_peer; 3643 int timeout; 3644 3645 p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success); 3646 3647 if (dev == NULL) { 3648 p2p_dbg(p2p, "No pending GO Negotiation"); 3649 return; 3650 } 3651 3652 if (success) { 3653 if (dev->flags & P2P_DEV_USER_REJECTED) { 3654 p2p_set_state(p2p, P2P_IDLE); 3655 return; 3656 } 3657 } else if (dev->go_neg_req_sent) { 3658 /* Cancel the increment from p2p_connect_send() on failure */ 3659 dev->go_neg_req_sent--; 3660 } 3661 3662 if (!success && 3663 (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) && 3664 !is_zero_ether_addr(dev->member_in_go_dev)) { 3665 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO", 3666 MAC2STR(dev->info.p2p_device_addr)); 3667 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3668 p2p_send_dev_disc_req(p2p, dev); 3669 return; 3670 } 3671 3672 /* 3673 * Use P2P find, if needed, to find the other device from its listen 3674 * channel. 3675 */ 3676 p2p_set_state(p2p, P2P_CONNECT); 3677 timeout = success ? 500000 : 100000; 3678 if (!success && p2p->go_neg_peer && 3679 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) { 3680 unsigned int r; 3681 /* 3682 * Peer is expected to wait our response and we will skip the 3683 * listen phase. Add some randomness to the wait time here to 3684 * make it less likely to hit cases where we could end up in 3685 * sync with peer not listening. 3686 */ 3687 if (os_get_random((u8 *) &r, sizeof(r)) < 0) 3688 r = 0; 3689 timeout += r % 100000; 3690 } 3691 p2p_set_timeout(p2p, 0, timeout); 3692 } 3693 3694 3695 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success) 3696 { 3697 p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d", 3698 success); 3699 if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) { 3700 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore"); 3701 return; 3702 } 3703 p2p_set_state(p2p, P2P_CONNECT); 3704 p2p_set_timeout(p2p, 0, 500000); 3705 } 3706 3707 3708 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success, 3709 const u8 *addr) 3710 { 3711 p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success); 3712 if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) { 3713 p2p_go_neg_failed(p2p, p2p->go_neg_peer->status); 3714 return; 3715 } 3716 3717 if (success) { 3718 struct p2p_device *dev; 3719 dev = p2p_get_device(p2p, addr); 3720 if (dev && 3721 dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 3722 dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE; 3723 } 3724 3725 if (p2p->state == P2P_SEARCH || p2p->state == P2P_SD_DURING_FIND) 3726 p2p_continue_find(p2p); 3727 } 3728 3729 3730 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, 3731 enum p2p_send_action_result result) 3732 { 3733 struct p2p_device *dev; 3734 3735 p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result); 3736 if (result == P2P_SEND_ACTION_FAILED) { 3737 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3738 p2p_go_neg_failed(p2p, -1); 3739 return; 3740 } 3741 3742 dev = p2p->go_neg_peer; 3743 3744 if (result == P2P_SEND_ACTION_NO_ACK) { 3745 /* 3746 * Retry GO Negotiation Confirmation 3747 * P2P_GO_NEG_CNF_MAX_RETRY_COUNT times if we did not receive 3748 * ACK for confirmation. 3749 */ 3750 if (dev && dev->go_neg_conf && 3751 dev->go_neg_conf_sent <= P2P_GO_NEG_CNF_MAX_RETRY_COUNT) { 3752 p2p_dbg(p2p, "GO Negotiation Confirm retry %d", 3753 dev->go_neg_conf_sent); 3754 p2p->pending_action_state = P2P_PENDING_GO_NEG_CONFIRM; 3755 if (p2p_send_action(p2p, dev->go_neg_conf_freq, 3756 dev->info.p2p_device_addr, 3757 p2p->cfg->dev_addr, 3758 dev->info.p2p_device_addr, 3759 wpabuf_head(dev->go_neg_conf), 3760 wpabuf_len(dev->go_neg_conf), 0) >= 3761 0) { 3762 dev->go_neg_conf_sent++; 3763 return; 3764 } 3765 p2p_dbg(p2p, "Failed to re-send Action frame"); 3766 3767 /* 3768 * Continue with the assumption that the first attempt 3769 * went through and just the ACK frame was lost. 3770 */ 3771 } 3772 3773 /* 3774 * It looks like the TX status for GO Negotiation Confirm is 3775 * often showing failure even when the peer has actually 3776 * received the frame. Since the peer may change channels 3777 * immediately after having received the frame, we may not see 3778 * an Ack for retries, so just dropping a single frame may 3779 * trigger this. To allow the group formation to succeed if the 3780 * peer did indeed receive the frame, continue regardless of 3781 * the TX status. 3782 */ 3783 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported"); 3784 } 3785 3786 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3787 3788 if (dev == NULL) 3789 return; 3790 3791 p2p_go_complete(p2p, dev); 3792 } 3793 3794 3795 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 3796 const u8 *src, const u8 *bssid, 3797 enum p2p_send_action_result result) 3798 { 3799 enum p2p_pending_action_state state; 3800 int success; 3801 3802 p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR 3803 " src=" MACSTR " bssid=" MACSTR " result=%d p2p_state=%s)", 3804 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src), 3805 MAC2STR(bssid), result, p2p_state_txt(p2p->state)); 3806 success = result == P2P_SEND_ACTION_SUCCESS; 3807 state = p2p->pending_action_state; 3808 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 3809 switch (state) { 3810 case P2P_NO_PENDING_ACTION: 3811 if (p2p->send_action_in_progress) { 3812 p2p->send_action_in_progress = 0; 3813 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3814 } 3815 p2p_check_after_scan_tx_continuation(p2p); 3816 break; 3817 case P2P_PENDING_GO_NEG_REQUEST: 3818 p2p_go_neg_req_cb(p2p, success); 3819 break; 3820 case P2P_PENDING_GO_NEG_RESPONSE: 3821 p2p_go_neg_resp_cb(p2p, success); 3822 break; 3823 case P2P_PENDING_GO_NEG_RESPONSE_FAILURE: 3824 p2p_go_neg_resp_failure_cb(p2p, success, dst); 3825 break; 3826 case P2P_PENDING_GO_NEG_CONFIRM: 3827 p2p_go_neg_conf_cb(p2p, result); 3828 break; 3829 case P2P_PENDING_SD: 3830 p2p_sd_cb(p2p, success); 3831 break; 3832 case P2P_PENDING_PD: 3833 p2p_prov_disc_cb(p2p, success); 3834 break; 3835 case P2P_PENDING_PD_RESPONSE: 3836 p2p_prov_disc_resp_cb(p2p, success); 3837 break; 3838 case P2P_PENDING_INVITATION_REQUEST: 3839 p2p_invitation_req_cb(p2p, success); 3840 break; 3841 case P2P_PENDING_INVITATION_RESPONSE: 3842 p2p_invitation_resp_cb(p2p, success); 3843 if (p2p->inv_status != P2P_SC_SUCCESS) 3844 p2p_check_after_scan_tx_continuation(p2p); 3845 break; 3846 case P2P_PENDING_DEV_DISC_REQUEST: 3847 p2p_dev_disc_req_cb(p2p, success); 3848 break; 3849 case P2P_PENDING_DEV_DISC_RESPONSE: 3850 p2p_dev_disc_resp_cb(p2p, success); 3851 break; 3852 case P2P_PENDING_GO_DISC_REQ: 3853 p2p_go_disc_req_cb(p2p, success); 3854 break; 3855 } 3856 3857 p2p->after_scan_tx_in_progress = 0; 3858 } 3859 3860 3861 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq, 3862 unsigned int duration) 3863 { 3864 if (freq == p2p->pending_client_disc_freq) { 3865 p2p_dbg(p2p, "Client discoverability remain-awake completed"); 3866 p2p->pending_client_disc_freq = 0; 3867 return; 3868 } 3869 3870 if (freq != p2p->pending_listen_freq) { 3871 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)", 3872 freq, duration, p2p->pending_listen_freq); 3873 return; 3874 } 3875 3876 p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback", 3877 p2p->pending_listen_sec, p2p->pending_listen_usec, 3878 p2p->pending_listen_freq); 3879 p2p->in_listen = 1; 3880 p2p->drv_in_listen = freq; 3881 if (p2p->pending_listen_sec || p2p->pending_listen_usec) { 3882 /* 3883 * Add 20 msec extra wait to avoid race condition with driver 3884 * remain-on-channel end event, i.e., give driver more time to 3885 * complete the operation before our timeout expires. 3886 */ 3887 p2p_set_timeout(p2p, p2p->pending_listen_sec, 3888 p2p->pending_listen_usec + 20000); 3889 } 3890 3891 p2p->pending_listen_freq = 0; 3892 } 3893 3894 3895 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq) 3896 { 3897 p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq); 3898 p2p->drv_in_listen = 0; 3899 if (p2p->in_listen) 3900 return 0; /* Internal timeout will trigger the next step */ 3901 3902 if (p2p->state == P2P_WAIT_PEER_CONNECT && p2p->go_neg_peer && 3903 p2p->pending_listen_freq) { 3904 /* 3905 * Better wait a bit if the driver is unable to start 3906 * offchannel operation for some reason to continue with 3907 * P2P_WAIT_PEER_(IDLE/CONNECT) state transitions. 3908 */ 3909 p2p_dbg(p2p, 3910 "Listen operation did not seem to start - delay idle phase to avoid busy loop"); 3911 p2p_set_timeout(p2p, 0, 100000); 3912 return 1; 3913 } 3914 3915 if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) { 3916 if (p2p->go_neg_peer->connect_reqs >= 120) { 3917 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 3918 p2p_go_neg_failed(p2p, -1); 3919 return 0; 3920 } 3921 3922 p2p_set_state(p2p, P2P_CONNECT); 3923 p2p_connect_send(p2p, p2p->go_neg_peer); 3924 return 1; 3925 } else if (p2p->state == P2P_SEARCH) { 3926 if (p2p->p2p_scan_running) { 3927 /* 3928 * Search is already in progress. This can happen if 3929 * an Action frame RX is reported immediately after 3930 * the end of a remain-on-channel operation and the 3931 * response frame to that is sent using an offchannel 3932 * operation while in p2p_find. Avoid an attempt to 3933 * restart a scan here. 3934 */ 3935 p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one"); 3936 return 1; 3937 } 3938 if (p2p->pending_listen_freq) { 3939 /* 3940 * Better wait a bit if the driver is unable to start 3941 * offchannel operation for some reason. p2p_search() 3942 * will be started from internal timeout. 3943 */ 3944 p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop"); 3945 p2p_set_timeout(p2p, 0, 100000); 3946 return 1; 3947 } 3948 if (p2p->search_delay) { 3949 p2p_dbg(p2p, "Delay search operation by %u ms", 3950 p2p->search_delay); 3951 p2p_set_timeout(p2p, p2p->search_delay / 1000, 3952 (p2p->search_delay % 1000) * 1000); 3953 return 1; 3954 } 3955 p2p_search(p2p); 3956 return 1; 3957 } 3958 3959 return 0; 3960 } 3961 3962 3963 static void p2p_timeout_connect(struct p2p_data *p2p) 3964 { 3965 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 3966 if (p2p->go_neg_peer && 3967 (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) { 3968 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed"); 3969 p2p_go_neg_failed(p2p, -1); 3970 return; 3971 } 3972 if (p2p->go_neg_peer && 3973 (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) && 3974 p2p->go_neg_peer->connect_reqs < 120) { 3975 p2p_dbg(p2p, "Peer expected to wait our response - skip listen"); 3976 p2p_connect_send(p2p, p2p->go_neg_peer); 3977 return; 3978 } 3979 if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) { 3980 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)"); 3981 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3982 p2p_set_timeout(p2p, 0, 30000); 3983 return; 3984 } 3985 p2p_set_state(p2p, P2P_CONNECT_LISTEN); 3986 p2p_listen_in_find(p2p, 0); 3987 } 3988 3989 3990 static void p2p_timeout_connect_listen(struct p2p_data *p2p) 3991 { 3992 if (p2p->go_neg_peer) { 3993 if (p2p->drv_in_listen) { 3994 p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete"); 3995 return; 3996 } 3997 3998 if (p2p->go_neg_peer->connect_reqs >= 120) { 3999 p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response"); 4000 p2p_go_neg_failed(p2p, -1); 4001 return; 4002 } 4003 4004 p2p_set_state(p2p, P2P_CONNECT); 4005 p2p_connect_send(p2p, p2p->go_neg_peer); 4006 } else 4007 p2p_set_state(p2p, P2P_IDLE); 4008 } 4009 4010 4011 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p) 4012 { 4013 p2p_set_state(p2p, P2P_WAIT_PEER_IDLE); 4014 4015 if (p2p->cfg->is_concurrent_session_active && 4016 p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx)) 4017 p2p_set_timeout(p2p, 0, 500000); 4018 else 4019 p2p_set_timeout(p2p, 0, 200000); 4020 } 4021 4022 4023 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p) 4024 { 4025 struct p2p_device *dev = p2p->go_neg_peer; 4026 4027 if (dev == NULL) { 4028 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait"); 4029 return; 4030 } 4031 4032 p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation"); 4033 p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT); 4034 p2p_listen_in_find(p2p, 0); 4035 } 4036 4037 4038 static void p2p_timeout_sd_during_find(struct p2p_data *p2p) 4039 { 4040 p2p_dbg(p2p, "Service Discovery Query timeout"); 4041 if (p2p->sd_peer) { 4042 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4043 p2p->sd_peer = NULL; 4044 } 4045 p2p_continue_find(p2p); 4046 } 4047 4048 4049 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p) 4050 { 4051 p2p_dbg(p2p, "Provision Discovery Request timeout"); 4052 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4053 p2p_continue_find(p2p); 4054 } 4055 4056 4057 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p) 4058 { 4059 u32 adv_id = 0; 4060 u8 *adv_mac = NULL; 4061 4062 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4063 4064 /* 4065 * For user initiated PD requests that we have not gotten any responses 4066 * for while in IDLE state, we retry them a couple of times before 4067 * giving up. 4068 */ 4069 if (!p2p->user_initiated_pd) 4070 return; 4071 4072 p2p_dbg(p2p, "User initiated Provision Discovery Request timeout"); 4073 4074 if (p2p->pd_retries) { 4075 p2p->pd_retries--; 4076 p2p_retry_pd(p2p); 4077 } else { 4078 struct p2p_device *dev; 4079 int for_join = 0; 4080 4081 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 4082 if (os_memcmp(p2p->pending_pd_devaddr, 4083 dev->info.p2p_device_addr, ETH_ALEN) != 0) 4084 continue; 4085 if (dev->req_config_methods && 4086 (dev->flags & P2P_DEV_PD_FOR_JOIN)) 4087 for_join = 1; 4088 } 4089 4090 if (p2p->p2ps_prov) { 4091 adv_id = p2p->p2ps_prov->adv_id; 4092 adv_mac = p2p->p2ps_prov->adv_mac; 4093 } 4094 4095 if (p2p->cfg->prov_disc_fail) 4096 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, 4097 p2p->pending_pd_devaddr, 4098 for_join ? 4099 P2P_PROV_DISC_TIMEOUT_JOIN : 4100 P2P_PROV_DISC_TIMEOUT, 4101 adv_id, adv_mac, NULL); 4102 p2p_reset_pending_pd(p2p); 4103 } 4104 } 4105 4106 4107 static void p2p_timeout_invite(struct p2p_data *p2p) 4108 { 4109 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 4110 p2p_set_state(p2p, P2P_INVITE_LISTEN); 4111 if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) { 4112 /* 4113 * Better remain on operating channel instead of listen channel 4114 * when running a group. 4115 */ 4116 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel"); 4117 p2p_set_timeout(p2p, 0, 100000); 4118 return; 4119 } 4120 p2p_listen_in_find(p2p, 0); 4121 } 4122 4123 4124 static void p2p_timeout_invite_listen(struct p2p_data *p2p) 4125 { 4126 if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) { 4127 p2p_set_state(p2p, P2P_INVITE); 4128 p2p_invite_send(p2p, p2p->invite_peer, 4129 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id); 4130 } else { 4131 if (p2p->invite_peer) { 4132 p2p_dbg(p2p, "Invitation Request retry limit reached"); 4133 if (p2p->cfg->invitation_result) 4134 p2p->cfg->invitation_result( 4135 p2p->cfg->cb_ctx, -1, NULL, NULL, 4136 p2p->invite_peer->info.p2p_device_addr, 4137 0, 0); 4138 } 4139 p2p_set_state(p2p, P2P_IDLE); 4140 } 4141 } 4142 4143 4144 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx) 4145 { 4146 struct p2p_data *p2p = eloop_ctx; 4147 4148 p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state)); 4149 4150 p2p->in_listen = 0; 4151 if (p2p->drv_in_listen) { 4152 p2p_dbg(p2p, "Driver is still in listen state - stop it"); 4153 p2p->cfg->stop_listen(p2p->cfg->cb_ctx); 4154 } 4155 4156 switch (p2p->state) { 4157 case P2P_IDLE: 4158 /* Check if we timed out waiting for PD req */ 4159 if (p2p->pending_action_state == P2P_PENDING_PD) 4160 p2p_timeout_prov_disc_req(p2p); 4161 break; 4162 case P2P_SEARCH: 4163 /* Check if we timed out waiting for PD req */ 4164 if (p2p->pending_action_state == P2P_PENDING_PD) 4165 p2p_timeout_prov_disc_req(p2p); 4166 if (p2p->search_delay && !p2p->in_search_delay) { 4167 p2p_dbg(p2p, "Delay search operation by %u ms", 4168 p2p->search_delay); 4169 p2p->in_search_delay = 1; 4170 p2p_set_timeout(p2p, p2p->search_delay / 1000, 4171 (p2p->search_delay % 1000) * 1000); 4172 break; 4173 } 4174 p2p->in_search_delay = 0; 4175 p2p_search(p2p); 4176 break; 4177 case P2P_CONNECT: 4178 p2p_timeout_connect(p2p); 4179 break; 4180 case P2P_CONNECT_LISTEN: 4181 p2p_timeout_connect_listen(p2p); 4182 break; 4183 case P2P_GO_NEG: 4184 break; 4185 case P2P_LISTEN_ONLY: 4186 /* Check if we timed out waiting for PD req */ 4187 if (p2p->pending_action_state == P2P_PENDING_PD) 4188 p2p_timeout_prov_disc_req(p2p); 4189 4190 if (p2p->ext_listen_only) { 4191 p2p_dbg(p2p, "Extended Listen Timing - Listen State completed"); 4192 p2p->ext_listen_only = 0; 4193 p2p_set_state(p2p, P2P_IDLE); 4194 } 4195 break; 4196 case P2P_WAIT_PEER_CONNECT: 4197 p2p_timeout_wait_peer_connect(p2p); 4198 break; 4199 case P2P_WAIT_PEER_IDLE: 4200 p2p_timeout_wait_peer_idle(p2p); 4201 break; 4202 case P2P_SD_DURING_FIND: 4203 p2p_timeout_sd_during_find(p2p); 4204 break; 4205 case P2P_PROVISIONING: 4206 break; 4207 case P2P_PD_DURING_FIND: 4208 p2p_timeout_prov_disc_during_find(p2p); 4209 break; 4210 case P2P_INVITE: 4211 p2p_timeout_invite(p2p); 4212 break; 4213 case P2P_INVITE_LISTEN: 4214 p2p_timeout_invite_listen(p2p); 4215 break; 4216 } 4217 } 4218 4219 4220 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr) 4221 { 4222 struct p2p_device *dev; 4223 4224 dev = p2p_get_device(p2p, peer_addr); 4225 p2p_dbg(p2p, "Local request to reject connection attempts by peer " 4226 MACSTR, MAC2STR(peer_addr)); 4227 if (dev == NULL) { 4228 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr)); 4229 return -1; 4230 } 4231 dev->status = P2P_SC_FAIL_REJECTED_BY_USER; 4232 dev->flags |= P2P_DEV_USER_REJECTED; 4233 return 0; 4234 } 4235 4236 4237 const char * p2p_wps_method_text(enum p2p_wps_method method) 4238 { 4239 switch (method) { 4240 case WPS_NOT_READY: 4241 return "not-ready"; 4242 case WPS_PIN_DISPLAY: 4243 return "Display"; 4244 case WPS_PIN_KEYPAD: 4245 return "Keypad"; 4246 case WPS_PBC: 4247 return "PBC"; 4248 case WPS_NFC: 4249 return "NFC"; 4250 case WPS_P2PS: 4251 return "P2PS"; 4252 } 4253 4254 return "??"; 4255 } 4256 4257 4258 static const char * p2p_go_state_text(enum p2p_go_state go_state) 4259 { 4260 switch (go_state) { 4261 case UNKNOWN_GO: 4262 return "unknown"; 4263 case LOCAL_GO: 4264 return "local"; 4265 case REMOTE_GO: 4266 return "remote"; 4267 } 4268 4269 return "??"; 4270 } 4271 4272 4273 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p, 4274 const u8 *addr, int next) 4275 { 4276 struct p2p_device *dev; 4277 4278 if (addr) 4279 dev = p2p_get_device(p2p, addr); 4280 else 4281 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 4282 4283 if (dev && next) { 4284 dev = dl_list_first(&dev->list, struct p2p_device, list); 4285 if (&dev->list == &p2p->devices) 4286 dev = NULL; 4287 } 4288 4289 if (dev == NULL) 4290 return NULL; 4291 4292 return &dev->info; 4293 } 4294 4295 4296 int p2p_get_peer_info_txt(const struct p2p_peer_info *info, 4297 char *buf, size_t buflen) 4298 { 4299 struct p2p_device *dev; 4300 int res; 4301 char *pos, *end; 4302 struct os_reltime now; 4303 4304 if (info == NULL) 4305 return -1; 4306 4307 dev = (struct p2p_device *) (((u8 *) info) - 4308 offsetof(struct p2p_device, info)); 4309 4310 pos = buf; 4311 end = buf + buflen; 4312 4313 os_get_reltime(&now); 4314 res = os_snprintf(pos, end - pos, 4315 "age=%d\n" 4316 "listen_freq=%d\n" 4317 "wps_method=%s\n" 4318 "interface_addr=" MACSTR "\n" 4319 "member_in_go_dev=" MACSTR "\n" 4320 "member_in_go_iface=" MACSTR "\n" 4321 "go_neg_req_sent=%d\n" 4322 "go_state=%s\n" 4323 "dialog_token=%u\n" 4324 "intended_addr=" MACSTR "\n" 4325 "country=%c%c\n" 4326 "oper_freq=%d\n" 4327 "req_config_methods=0x%x\n" 4328 "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n" 4329 "status=%d\n" 4330 "invitation_reqs=%u\n", 4331 (int) (now.sec - dev->last_seen.sec), 4332 dev->listen_freq, 4333 p2p_wps_method_text(dev->wps_method), 4334 MAC2STR(dev->interface_addr), 4335 MAC2STR(dev->member_in_go_dev), 4336 MAC2STR(dev->member_in_go_iface), 4337 dev->go_neg_req_sent, 4338 p2p_go_state_text(dev->go_state), 4339 dev->dialog_token, 4340 MAC2STR(dev->intended_addr), 4341 dev->country[0] ? dev->country[0] : '_', 4342 dev->country[1] ? dev->country[1] : '_', 4343 dev->oper_freq, 4344 dev->req_config_methods, 4345 dev->flags & P2P_DEV_PROBE_REQ_ONLY ? 4346 "[PROBE_REQ_ONLY]" : "", 4347 dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "", 4348 dev->flags & P2P_DEV_NOT_YET_READY ? 4349 "[NOT_YET_READY]" : "", 4350 dev->flags & P2P_DEV_PD_PEER_DISPLAY ? 4351 "[PD_PEER_DISPLAY]" : "", 4352 dev->flags & P2P_DEV_PD_PEER_KEYPAD ? 4353 "[PD_PEER_KEYPAD]" : "", 4354 dev->flags & P2P_DEV_PD_PEER_P2PS ? 4355 "[PD_PEER_P2PS]" : "", 4356 dev->flags & P2P_DEV_USER_REJECTED ? 4357 "[USER_REJECTED]" : "", 4358 dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ? 4359 "[PEER_WAITING_RESPONSE]" : "", 4360 dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ? 4361 "[PREFER_PERSISTENT_GROUP]" : "", 4362 dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ? 4363 "[WAIT_GO_NEG_RESPONSE]" : "", 4364 dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ? 4365 "[WAIT_GO_NEG_CONFIRM]" : "", 4366 dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ? 4367 "[GROUP_CLIENT_ONLY]" : "", 4368 dev->flags & P2P_DEV_FORCE_FREQ ? 4369 "[FORCE_FREQ]" : "", 4370 dev->flags & P2P_DEV_PD_FOR_JOIN ? 4371 "[PD_FOR_JOIN]" : "", 4372 dev->flags & P2P_DEV_LAST_SEEN_AS_GROUP_CLIENT ? 4373 "[LAST_SEEN_AS_GROUP_CLIENT]" : "", 4374 dev->status, 4375 dev->invitation_reqs); 4376 if (os_snprintf_error(end - pos, res)) 4377 return pos - buf; 4378 pos += res; 4379 4380 if (dev->ext_listen_period) { 4381 res = os_snprintf(pos, end - pos, 4382 "ext_listen_period=%u\n" 4383 "ext_listen_interval=%u\n", 4384 dev->ext_listen_period, 4385 dev->ext_listen_interval); 4386 if (os_snprintf_error(end - pos, res)) 4387 return pos - buf; 4388 pos += res; 4389 } 4390 4391 if (dev->oper_ssid_len) { 4392 res = os_snprintf(pos, end - pos, 4393 "oper_ssid=%s\n", 4394 wpa_ssid_txt(dev->oper_ssid, 4395 dev->oper_ssid_len)); 4396 if (os_snprintf_error(end - pos, res)) 4397 return pos - buf; 4398 pos += res; 4399 } 4400 4401 #ifdef CONFIG_WIFI_DISPLAY 4402 if (dev->info.wfd_subelems) { 4403 res = os_snprintf(pos, end - pos, "wfd_subelems="); 4404 if (os_snprintf_error(end - pos, res)) 4405 return pos - buf; 4406 pos += res; 4407 4408 pos += wpa_snprintf_hex(pos, end - pos, 4409 wpabuf_head(dev->info.wfd_subelems), 4410 wpabuf_len(dev->info.wfd_subelems)); 4411 4412 res = os_snprintf(pos, end - pos, "\n"); 4413 if (os_snprintf_error(end - pos, res)) 4414 return pos - buf; 4415 pos += res; 4416 } 4417 #endif /* CONFIG_WIFI_DISPLAY */ 4418 4419 return pos - buf; 4420 } 4421 4422 4423 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr) 4424 { 4425 return p2p_get_device(p2p, addr) != NULL; 4426 } 4427 4428 4429 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled) 4430 { 4431 if (enabled) { 4432 p2p_dbg(p2p, "Client discoverability enabled"); 4433 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4434 } else { 4435 p2p_dbg(p2p, "Client discoverability disabled"); 4436 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY; 4437 } 4438 } 4439 4440 4441 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1, 4442 u32 duration2, u32 interval2) 4443 { 4444 struct wpabuf *req; 4445 struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL; 4446 u8 *len; 4447 4448 req = wpabuf_alloc(100); 4449 if (req == NULL) 4450 return NULL; 4451 4452 if (duration1 || interval1) { 4453 os_memset(&desc1, 0, sizeof(desc1)); 4454 desc1.count_type = 1; 4455 desc1.duration = duration1; 4456 desc1.interval = interval1; 4457 ptr1 = &desc1; 4458 4459 if (duration2 || interval2) { 4460 os_memset(&desc2, 0, sizeof(desc2)); 4461 desc2.count_type = 2; 4462 desc2.duration = duration2; 4463 desc2.interval = interval2; 4464 ptr2 = &desc2; 4465 } 4466 } 4467 4468 p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1); 4469 len = p2p_buf_add_ie_hdr(req); 4470 p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2); 4471 p2p_buf_update_ie_hdr(req, len); 4472 4473 return req; 4474 } 4475 4476 4477 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr, 4478 const u8 *own_interface_addr, unsigned int freq, 4479 u32 duration1, u32 interval1, u32 duration2, 4480 u32 interval2) 4481 { 4482 struct wpabuf *req; 4483 4484 p2p_dbg(p2p, "Send Presence Request to GO " MACSTR 4485 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u " 4486 "dur2=%u int2=%u", 4487 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr), 4488 freq, duration1, interval1, duration2, interval2); 4489 4490 req = p2p_build_presence_req(duration1, interval1, duration2, 4491 interval2); 4492 if (req == NULL) 4493 return -1; 4494 4495 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4496 if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr, 4497 go_interface_addr, 4498 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 4499 p2p_dbg(p2p, "Failed to send Action frame"); 4500 } 4501 wpabuf_free(req); 4502 4503 return 0; 4504 } 4505 4506 4507 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa, 4508 size_t noa_len, u8 dialog_token) 4509 { 4510 struct wpabuf *resp; 4511 u8 *len; 4512 4513 resp = wpabuf_alloc(100 + noa_len); 4514 if (resp == NULL) 4515 return NULL; 4516 4517 p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token); 4518 len = p2p_buf_add_ie_hdr(resp); 4519 p2p_buf_add_status(resp, status); 4520 if (noa) { 4521 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE); 4522 wpabuf_put_le16(resp, noa_len); 4523 wpabuf_put_data(resp, noa, noa_len); 4524 } else 4525 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL); 4526 p2p_buf_update_ie_hdr(resp, len); 4527 4528 return resp; 4529 } 4530 4531 4532 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da, 4533 const u8 *sa, const u8 *data, size_t len, 4534 int rx_freq) 4535 { 4536 struct p2p_message msg; 4537 u8 status; 4538 struct wpabuf *resp; 4539 size_t g; 4540 struct p2p_group *group = NULL; 4541 int parsed = 0; 4542 u8 noa[50]; 4543 int noa_len; 4544 4545 p2p_dbg(p2p, "Received P2P Action - P2P Presence Request"); 4546 4547 for (g = 0; g < p2p->num_groups; g++) { 4548 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]), 4549 ETH_ALEN) == 0) { 4550 group = p2p->groups[g]; 4551 break; 4552 } 4553 } 4554 if (group == NULL) { 4555 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group " 4556 MACSTR, MAC2STR(da)); 4557 return; 4558 } 4559 4560 if (p2p_parse(data, len, &msg) < 0) { 4561 p2p_dbg(p2p, "Failed to parse P2P Presence Request"); 4562 status = P2P_SC_FAIL_INVALID_PARAMS; 4563 goto fail; 4564 } 4565 parsed = 1; 4566 4567 if (msg.noa == NULL) { 4568 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request"); 4569 status = P2P_SC_FAIL_INVALID_PARAMS; 4570 goto fail; 4571 } 4572 4573 status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len); 4574 4575 fail: 4576 if (p2p->cfg->get_noa) 4577 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa, 4578 sizeof(noa)); 4579 else 4580 noa_len = -1; 4581 resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL, 4582 noa_len > 0 ? noa_len : 0, 4583 msg.dialog_token); 4584 if (parsed) 4585 p2p_parse_free(&msg); 4586 if (resp == NULL) 4587 return; 4588 4589 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 4590 if (p2p_send_action(p2p, rx_freq, sa, da, da, 4591 wpabuf_head(resp), wpabuf_len(resp), 200) < 0) { 4592 p2p_dbg(p2p, "Failed to send Action frame"); 4593 } 4594 wpabuf_free(resp); 4595 } 4596 4597 4598 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da, 4599 const u8 *sa, const u8 *data, size_t len) 4600 { 4601 struct p2p_message msg; 4602 4603 p2p_dbg(p2p, "Received P2P Action - P2P Presence Response"); 4604 4605 if (p2p_parse(data, len, &msg) < 0) { 4606 p2p_dbg(p2p, "Failed to parse P2P Presence Response"); 4607 return; 4608 } 4609 4610 if (msg.status == NULL || msg.noa == NULL) { 4611 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response"); 4612 p2p_parse_free(&msg); 4613 return; 4614 } 4615 4616 if (p2p->cfg->presence_resp) { 4617 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status, 4618 msg.noa, msg.noa_len); 4619 } 4620 4621 if (*msg.status) { 4622 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u", 4623 *msg.status); 4624 p2p_parse_free(&msg); 4625 return; 4626 } 4627 4628 p2p_dbg(p2p, "P2P Presence Request was accepted"); 4629 wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA", 4630 msg.noa, msg.noa_len); 4631 /* TODO: process NoA */ 4632 p2p_parse_free(&msg); 4633 } 4634 4635 4636 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4637 { 4638 struct p2p_data *p2p = eloop_ctx; 4639 4640 if (p2p->ext_listen_interval) { 4641 /* Schedule next extended listen timeout */ 4642 eloop_register_timeout(p2p->ext_listen_interval_sec, 4643 p2p->ext_listen_interval_usec, 4644 p2p_ext_listen_timeout, p2p, NULL); 4645 } 4646 4647 if ((p2p->cfg->is_p2p_in_progress && 4648 p2p->cfg->is_p2p_in_progress(p2p->cfg->cb_ctx)) || 4649 (p2p->pending_action_state == P2P_PENDING_PD && 4650 p2p->pd_retries > 0)) { 4651 p2p_dbg(p2p, "Operation in progress - skip Extended Listen timeout (%s)", 4652 p2p_state_txt(p2p->state)); 4653 return; 4654 } 4655 4656 if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) { 4657 /* 4658 * This should not really happen, but it looks like the Listen 4659 * command may fail is something else (e.g., a scan) was 4660 * running at an inconvenient time. As a workaround, allow new 4661 * Extended Listen operation to be started. 4662 */ 4663 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again"); 4664 p2p->ext_listen_only = 0; 4665 p2p_set_state(p2p, P2P_IDLE); 4666 } 4667 4668 if (p2p->state != P2P_IDLE) { 4669 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state)); 4670 return; 4671 } 4672 4673 p2p_dbg(p2p, "Extended Listen timeout"); 4674 p2p->ext_listen_only = 1; 4675 if (p2p_listen(p2p, p2p->ext_listen_period) < 0) { 4676 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing"); 4677 p2p->ext_listen_only = 0; 4678 } 4679 } 4680 4681 4682 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period, 4683 unsigned int interval) 4684 { 4685 if (period > 65535 || interval > 65535 || period > interval || 4686 (period == 0 && interval > 0) || (period > 0 && interval == 0)) { 4687 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u", 4688 period, interval); 4689 return -1; 4690 } 4691 4692 eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL); 4693 4694 if (interval == 0) { 4695 p2p_dbg(p2p, "Disabling Extended Listen Timing"); 4696 p2p->ext_listen_period = 0; 4697 p2p->ext_listen_interval = 0; 4698 return 0; 4699 } 4700 4701 p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec", 4702 period, interval); 4703 p2p->ext_listen_period = period; 4704 p2p->ext_listen_interval = interval; 4705 p2p->ext_listen_interval_sec = interval / 1000; 4706 p2p->ext_listen_interval_usec = (interval % 1000) * 1000; 4707 4708 eloop_register_timeout(p2p->ext_listen_interval_sec, 4709 p2p->ext_listen_interval_usec, 4710 p2p_ext_listen_timeout, p2p, NULL); 4711 4712 return 0; 4713 } 4714 4715 4716 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4717 const u8 *ie, size_t ie_len) 4718 { 4719 struct p2p_message msg; 4720 4721 if (bssid == NULL || ie == NULL) 4722 return; 4723 4724 os_memset(&msg, 0, sizeof(msg)); 4725 if (p2p_parse_ies(ie, ie_len, &msg)) 4726 return; 4727 if (msg.minor_reason_code == NULL) { 4728 p2p_parse_free(&msg); 4729 return; 4730 } 4731 4732 p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR 4733 " reason_code=%u minor_reason_code=%u", 4734 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4735 4736 p2p_parse_free(&msg); 4737 } 4738 4739 4740 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code, 4741 const u8 *ie, size_t ie_len) 4742 { 4743 struct p2p_message msg; 4744 4745 if (bssid == NULL || ie == NULL) 4746 return; 4747 4748 os_memset(&msg, 0, sizeof(msg)); 4749 if (p2p_parse_ies(ie, ie_len, &msg)) 4750 return; 4751 if (msg.minor_reason_code == NULL) { 4752 p2p_parse_free(&msg); 4753 return; 4754 } 4755 4756 p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR 4757 " reason_code=%u minor_reason_code=%u", 4758 MAC2STR(bssid), reason_code, *msg.minor_reason_code); 4759 4760 p2p_parse_free(&msg); 4761 } 4762 4763 4764 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled) 4765 { 4766 if (enabled) { 4767 p2p_dbg(p2p, "Managed P2P Device operations enabled"); 4768 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED; 4769 } else { 4770 p2p_dbg(p2p, "Managed P2P Device operations disabled"); 4771 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED; 4772 } 4773 } 4774 4775 4776 int p2p_config_get_random_social(struct p2p_config *p2p, u8 *op_class, 4777 u8 *op_channel, 4778 struct wpa_freq_range_list *avoid_list, 4779 struct wpa_freq_range_list *disallow_list) 4780 { 4781 return p2p_channel_random_social(&p2p->channels, op_class, op_channel, 4782 avoid_list, disallow_list); 4783 } 4784 4785 4786 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel, 4787 u8 forced) 4788 { 4789 if (p2p_channel_to_freq(reg_class, channel) < 0) 4790 return -1; 4791 4792 /* 4793 * Listen channel was set in configuration or set by control interface; 4794 * cannot override it. 4795 */ 4796 if (p2p->cfg->channel_forced && forced == 0) { 4797 p2p_dbg(p2p, 4798 "Listen channel was previously configured - do not override based on optimization"); 4799 return -1; 4800 } 4801 4802 p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u", 4803 reg_class, channel); 4804 4805 if (p2p->state == P2P_IDLE) { 4806 p2p->cfg->reg_class = reg_class; 4807 p2p->cfg->channel = channel; 4808 p2p->cfg->channel_forced = forced; 4809 } else { 4810 p2p_dbg(p2p, "Defer setting listen channel"); 4811 p2p->pending_reg_class = reg_class; 4812 p2p->pending_channel = channel; 4813 p2p->pending_channel_forced = forced; 4814 } 4815 4816 return 0; 4817 } 4818 4819 4820 u8 p2p_get_listen_channel(struct p2p_data *p2p) 4821 { 4822 return p2p->cfg->channel; 4823 } 4824 4825 4826 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len) 4827 { 4828 p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len)); 4829 if (postfix == NULL) { 4830 p2p->cfg->ssid_postfix_len = 0; 4831 return 0; 4832 } 4833 if (len > sizeof(p2p->cfg->ssid_postfix)) 4834 return -1; 4835 os_memcpy(p2p->cfg->ssid_postfix, postfix, len); 4836 p2p->cfg->ssid_postfix_len = len; 4837 return 0; 4838 } 4839 4840 4841 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel, 4842 int cfg_op_channel) 4843 { 4844 if (p2p_channel_to_freq(op_reg_class, op_channel) < 0) 4845 return -1; 4846 4847 p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u", 4848 op_reg_class, op_channel); 4849 p2p->cfg->op_reg_class = op_reg_class; 4850 p2p->cfg->op_channel = op_channel; 4851 p2p->cfg->cfg_op_channel = cfg_op_channel; 4852 return 0; 4853 } 4854 4855 4856 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan, 4857 const struct p2p_channel *pref_chan) 4858 { 4859 struct p2p_channel *n; 4860 4861 if (pref_chan) { 4862 n = os_memdup(pref_chan, 4863 num_pref_chan * sizeof(struct p2p_channel)); 4864 if (n == NULL) 4865 return -1; 4866 } else 4867 n = NULL; 4868 4869 os_free(p2p->cfg->pref_chan); 4870 p2p->cfg->pref_chan = n; 4871 p2p->cfg->num_pref_chan = num_pref_chan; 4872 4873 return 0; 4874 } 4875 4876 4877 int p2p_set_no_go_freq(struct p2p_data *p2p, 4878 const struct wpa_freq_range_list *list) 4879 { 4880 struct wpa_freq_range *tmp; 4881 4882 if (list == NULL || list->num == 0) { 4883 os_free(p2p->no_go_freq.range); 4884 p2p->no_go_freq.range = NULL; 4885 p2p->no_go_freq.num = 0; 4886 return 0; 4887 } 4888 4889 tmp = os_calloc(list->num, sizeof(struct wpa_freq_range)); 4890 if (tmp == NULL) 4891 return -1; 4892 os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range)); 4893 os_free(p2p->no_go_freq.range); 4894 p2p->no_go_freq.range = tmp; 4895 p2p->no_go_freq.num = list->num; 4896 p2p_dbg(p2p, "Updated no GO chan list"); 4897 4898 return 0; 4899 } 4900 4901 4902 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr, 4903 u8 *iface_addr) 4904 { 4905 struct p2p_device *dev = p2p_get_device(p2p, dev_addr); 4906 if (dev == NULL || is_zero_ether_addr(dev->interface_addr)) 4907 return -1; 4908 os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN); 4909 return 0; 4910 } 4911 4912 4913 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr, 4914 u8 *dev_addr) 4915 { 4916 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4917 if (dev == NULL) 4918 return -1; 4919 os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN); 4920 return 0; 4921 } 4922 4923 4924 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr) 4925 { 4926 os_memcpy(p2p->peer_filter, addr, ETH_ALEN); 4927 if (is_zero_ether_addr(p2p->peer_filter)) 4928 p2p_dbg(p2p, "Disable peer filter"); 4929 else 4930 p2p_dbg(p2p, "Enable peer filter for " MACSTR, 4931 MAC2STR(p2p->peer_filter)); 4932 } 4933 4934 4935 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled) 4936 { 4937 p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled"); 4938 if (p2p->cross_connect == enabled) 4939 return; 4940 p2p->cross_connect = enabled; 4941 /* TODO: may need to tear down any action group where we are GO(?) */ 4942 } 4943 4944 4945 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr) 4946 { 4947 struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr); 4948 if (dev == NULL) 4949 return -1; 4950 if (dev->oper_freq <= 0) 4951 return -1; 4952 return dev->oper_freq; 4953 } 4954 4955 4956 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled) 4957 { 4958 p2p_dbg(p2p, "Intra BSS distribution %s", 4959 enabled ? "enabled" : "disabled"); 4960 p2p->cfg->p2p_intra_bss = enabled; 4961 } 4962 4963 4964 void p2p_update_channel_list(struct p2p_data *p2p, 4965 const struct p2p_channels *chan, 4966 const struct p2p_channels *cli_chan) 4967 { 4968 p2p_dbg(p2p, "Update channel list"); 4969 os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels)); 4970 p2p_channels_dump(p2p, "channels", &p2p->cfg->channels); 4971 os_memcpy(&p2p->cfg->cli_channels, cli_chan, 4972 sizeof(struct p2p_channels)); 4973 p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels); 4974 } 4975 4976 4977 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst, 4978 const u8 *src, const u8 *bssid, const u8 *buf, 4979 size_t len, unsigned int wait_time) 4980 { 4981 int res, scheduled; 4982 4983 if (p2p->p2p_scan_running) { 4984 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes"); 4985 if (p2p->after_scan_tx) { 4986 p2p_dbg(p2p, "Dropped previous pending Action frame TX"); 4987 os_free(p2p->after_scan_tx); 4988 } 4989 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) + 4990 len); 4991 if (p2p->after_scan_tx == NULL) 4992 return -1; 4993 p2p->after_scan_tx->freq = freq; 4994 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN); 4995 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN); 4996 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN); 4997 p2p->after_scan_tx->len = len; 4998 p2p->after_scan_tx->wait_time = wait_time; 4999 os_memcpy(p2p->after_scan_tx + 1, buf, len); 5000 return 0; 5001 } 5002 5003 res = p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid, 5004 buf, len, wait_time, &scheduled); 5005 if (res == 0 && scheduled && p2p->in_listen && freq > 0 && 5006 (unsigned int) p2p->drv_in_listen != freq) { 5007 p2p_dbg(p2p, 5008 "Stop listen on %d MHz to allow a frame to be sent immediately on %d MHz", 5009 p2p->drv_in_listen, freq); 5010 p2p_stop_listen_for_freq(p2p, freq); 5011 } 5012 return res; 5013 } 5014 5015 5016 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5, 5017 int freq_overall) 5018 { 5019 p2p_dbg(p2p, "Best channel: 2.4 GHz: %d, 5 GHz: %d, overall: %d", 5020 freq_24, freq_5, freq_overall); 5021 p2p->best_freq_24 = freq_24; 5022 p2p->best_freq_5 = freq_5; 5023 p2p->best_freq_overall = freq_overall; 5024 } 5025 5026 5027 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq) 5028 { 5029 p2p_dbg(p2p, "Own frequency preference: %d MHz", freq); 5030 p2p->own_freq_preference = freq; 5031 } 5032 5033 5034 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p) 5035 { 5036 if (p2p == NULL || p2p->go_neg_peer == NULL) 5037 return NULL; 5038 return p2p->go_neg_peer->info.p2p_device_addr; 5039 } 5040 5041 5042 const struct p2p_peer_info * 5043 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next) 5044 { 5045 struct p2p_device *dev; 5046 5047 if (addr) { 5048 dev = p2p_get_device(p2p, addr); 5049 if (!dev) 5050 return NULL; 5051 5052 if (!next) { 5053 if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) 5054 return NULL; 5055 5056 return &dev->info; 5057 } else { 5058 do { 5059 dev = dl_list_first(&dev->list, 5060 struct p2p_device, 5061 list); 5062 if (!dev || &dev->list == &p2p->devices) 5063 return NULL; 5064 } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY); 5065 } 5066 } else { 5067 dev = dl_list_first(&p2p->devices, struct p2p_device, list); 5068 if (!dev) 5069 return NULL; 5070 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) { 5071 dev = dl_list_first(&dev->list, 5072 struct p2p_device, 5073 list); 5074 if (!dev || &dev->list == &p2p->devices) 5075 return NULL; 5076 } 5077 } 5078 5079 return &dev->info; 5080 } 5081 5082 5083 int p2p_in_progress(struct p2p_data *p2p) 5084 { 5085 if (p2p == NULL) 5086 return 0; 5087 if (p2p->state == P2P_SEARCH) 5088 return 2; 5089 return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING; 5090 } 5091 5092 5093 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout, 5094 u8 client_timeout) 5095 { 5096 if (p2p) { 5097 p2p->go_timeout = go_timeout; 5098 p2p->client_timeout = client_timeout; 5099 } 5100 } 5101 5102 5103 #ifdef CONFIG_WIFI_DISPLAY 5104 5105 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p) 5106 { 5107 size_t g; 5108 struct p2p_group *group; 5109 5110 for (g = 0; g < p2p->num_groups; g++) { 5111 group = p2p->groups[g]; 5112 p2p_group_force_beacon_update_ies(group); 5113 } 5114 } 5115 5116 5117 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie) 5118 { 5119 wpabuf_free(p2p->wfd_ie_beacon); 5120 p2p->wfd_ie_beacon = ie; 5121 p2p_update_wfd_ie_groups(p2p); 5122 return 0; 5123 } 5124 5125 5126 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie) 5127 { 5128 wpabuf_free(p2p->wfd_ie_probe_req); 5129 p2p->wfd_ie_probe_req = ie; 5130 return 0; 5131 } 5132 5133 5134 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie) 5135 { 5136 wpabuf_free(p2p->wfd_ie_probe_resp); 5137 p2p->wfd_ie_probe_resp = ie; 5138 p2p_update_wfd_ie_groups(p2p); 5139 return 0; 5140 } 5141 5142 5143 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie) 5144 { 5145 wpabuf_free(p2p->wfd_ie_assoc_req); 5146 p2p->wfd_ie_assoc_req = ie; 5147 return 0; 5148 } 5149 5150 5151 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie) 5152 { 5153 wpabuf_free(p2p->wfd_ie_invitation); 5154 p2p->wfd_ie_invitation = ie; 5155 return 0; 5156 } 5157 5158 5159 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie) 5160 { 5161 wpabuf_free(p2p->wfd_ie_prov_disc_req); 5162 p2p->wfd_ie_prov_disc_req = ie; 5163 return 0; 5164 } 5165 5166 5167 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie) 5168 { 5169 wpabuf_free(p2p->wfd_ie_prov_disc_resp); 5170 p2p->wfd_ie_prov_disc_resp = ie; 5171 return 0; 5172 } 5173 5174 5175 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie) 5176 { 5177 wpabuf_free(p2p->wfd_ie_go_neg); 5178 p2p->wfd_ie_go_neg = ie; 5179 return 0; 5180 } 5181 5182 5183 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5184 { 5185 wpabuf_free(p2p->wfd_dev_info); 5186 if (elem) { 5187 p2p->wfd_dev_info = wpabuf_dup(elem); 5188 if (p2p->wfd_dev_info == NULL) 5189 return -1; 5190 } else 5191 p2p->wfd_dev_info = NULL; 5192 5193 return 0; 5194 } 5195 5196 5197 int p2p_set_wfd_r2_dev_info(struct p2p_data *p2p, const struct wpabuf *elem) 5198 { 5199 wpabuf_free(p2p->wfd_r2_dev_info); 5200 if (elem) { 5201 p2p->wfd_r2_dev_info = wpabuf_dup(elem); 5202 if (p2p->wfd_r2_dev_info == NULL) 5203 return -1; 5204 } else 5205 p2p->wfd_r2_dev_info = NULL; 5206 5207 return 0; 5208 } 5209 5210 5211 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem) 5212 { 5213 wpabuf_free(p2p->wfd_assoc_bssid); 5214 if (elem) { 5215 p2p->wfd_assoc_bssid = wpabuf_dup(elem); 5216 if (p2p->wfd_assoc_bssid == NULL) 5217 return -1; 5218 } else 5219 p2p->wfd_assoc_bssid = NULL; 5220 5221 return 0; 5222 } 5223 5224 5225 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p, 5226 const struct wpabuf *elem) 5227 { 5228 wpabuf_free(p2p->wfd_coupled_sink_info); 5229 if (elem) { 5230 p2p->wfd_coupled_sink_info = wpabuf_dup(elem); 5231 if (p2p->wfd_coupled_sink_info == NULL) 5232 return -1; 5233 } else 5234 p2p->wfd_coupled_sink_info = NULL; 5235 5236 return 0; 5237 } 5238 5239 #endif /* CONFIG_WIFI_DISPLAY */ 5240 5241 5242 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int, 5243 int max_disc_tu) 5244 { 5245 if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0) 5246 return -1; 5247 5248 p2p->min_disc_int = min_disc_int; 5249 p2p->max_disc_int = max_disc_int; 5250 p2p->max_disc_tu = max_disc_tu; 5251 p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d", 5252 min_disc_int, max_disc_int, max_disc_tu); 5253 5254 return 0; 5255 } 5256 5257 5258 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...) 5259 { 5260 va_list ap; 5261 char buf[500]; 5262 5263 if (!p2p->cfg->debug_print) 5264 return; 5265 5266 va_start(ap, fmt); 5267 vsnprintf(buf, sizeof(buf), fmt, ap); 5268 buf[sizeof(buf) - 1] = '\0'; 5269 va_end(ap); 5270 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf); 5271 } 5272 5273 5274 void p2p_info(struct p2p_data *p2p, const char *fmt, ...) 5275 { 5276 va_list ap; 5277 char buf[500]; 5278 5279 if (!p2p->cfg->debug_print) 5280 return; 5281 5282 va_start(ap, fmt); 5283 vsnprintf(buf, sizeof(buf), fmt, ap); 5284 buf[sizeof(buf) - 1] = '\0'; 5285 va_end(ap); 5286 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf); 5287 } 5288 5289 5290 void p2p_err(struct p2p_data *p2p, const char *fmt, ...) 5291 { 5292 va_list ap; 5293 char buf[500]; 5294 5295 if (!p2p->cfg->debug_print) 5296 return; 5297 5298 va_start(ap, fmt); 5299 vsnprintf(buf, sizeof(buf), fmt, ap); 5300 buf[sizeof(buf) - 1] = '\0'; 5301 va_end(ap); 5302 p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf); 5303 } 5304 5305 5306 void p2p_loop_on_known_peers(struct p2p_data *p2p, 5307 void (*peer_callback)(struct p2p_peer_info *peer, 5308 void *user_data), 5309 void *user_data) 5310 { 5311 struct p2p_device *dev, *n; 5312 5313 dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) { 5314 peer_callback(&dev->info, user_data); 5315 } 5316 } 5317 5318 5319 #ifdef CONFIG_WPS_NFC 5320 5321 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p, 5322 int client_freq, 5323 const u8 *go_dev_addr, 5324 const u8 *ssid, size_t ssid_len) 5325 { 5326 struct wpabuf *buf; 5327 u8 op_class, channel; 5328 enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP; 5329 5330 buf = wpabuf_alloc(1000); 5331 if (buf == NULL) 5332 return NULL; 5333 5334 op_class = p2p->cfg->reg_class; 5335 channel = p2p->cfg->channel; 5336 5337 p2p_buf_add_capability(buf, p2p->dev_capab & 5338 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0); 5339 p2p_buf_add_device_info(buf, p2p, NULL); 5340 5341 if (p2p->num_groups > 0) { 5342 int freq = p2p_group_get_freq(p2p->groups[0]); 5343 role = P2P_GO_IN_A_GROUP; 5344 if (p2p_freq_to_channel(freq, &op_class, &channel) < 0) { 5345 p2p_dbg(p2p, 5346 "Unknown GO operating frequency %d MHz for NFC handover", 5347 freq); 5348 wpabuf_free(buf); 5349 return NULL; 5350 } 5351 } else if (client_freq > 0) { 5352 role = P2P_CLIENT_IN_A_GROUP; 5353 if (p2p_freq_to_channel(client_freq, &op_class, &channel) < 0) { 5354 p2p_dbg(p2p, 5355 "Unknown client operating frequency %d MHz for NFC handover", 5356 client_freq); 5357 wpabuf_free(buf); 5358 return NULL; 5359 } 5360 } 5361 5362 p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class, 5363 channel, role); 5364 5365 if (p2p->num_groups > 0) { 5366 /* Limit number of clients to avoid very long message */ 5367 p2p_buf_add_group_info(p2p->groups[0], buf, 5); 5368 p2p_group_buf_add_id(p2p->groups[0], buf); 5369 } else if (client_freq > 0 && 5370 go_dev_addr && !is_zero_ether_addr(go_dev_addr) && 5371 ssid && ssid_len > 0) { 5372 /* 5373 * Add the optional P2P Group ID to indicate in which group this 5374 * device is a P2P Client. 5375 */ 5376 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len); 5377 } 5378 5379 return buf; 5380 } 5381 5382 5383 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p, 5384 int client_freq, 5385 const u8 *go_dev_addr, 5386 const u8 *ssid, size_t ssid_len) 5387 { 5388 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5389 ssid_len); 5390 } 5391 5392 5393 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p, 5394 int client_freq, 5395 const u8 *go_dev_addr, 5396 const u8 *ssid, size_t ssid_len) 5397 { 5398 return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid, 5399 ssid_len); 5400 } 5401 5402 5403 int p2p_process_nfc_connection_handover(struct p2p_data *p2p, 5404 struct p2p_nfc_params *params) 5405 { 5406 struct p2p_message msg; 5407 struct p2p_device *dev; 5408 const u8 *p2p_dev_addr; 5409 int freq; 5410 enum p2p_role_indication role; 5411 5412 params->next_step = NO_ACTION; 5413 5414 if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len, 5415 params->p2p_attr, params->p2p_len, &msg)) { 5416 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC"); 5417 p2p_parse_free(&msg); 5418 return -1; 5419 } 5420 5421 if (msg.p2p_device_addr) 5422 p2p_dev_addr = msg.p2p_device_addr; 5423 else if (msg.device_id) 5424 p2p_dev_addr = msg.device_id; 5425 else { 5426 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id"); 5427 p2p_parse_free(&msg); 5428 return -1; 5429 } 5430 5431 if (msg.oob_dev_password) { 5432 os_memcpy(params->oob_dev_pw, msg.oob_dev_password, 5433 msg.oob_dev_password_len); 5434 params->oob_dev_pw_len = msg.oob_dev_password_len; 5435 } 5436 5437 dev = p2p_create_device(p2p, p2p_dev_addr); 5438 if (dev == NULL) { 5439 p2p_parse_free(&msg); 5440 return -1; 5441 } 5442 5443 params->peer = &dev->info; 5444 5445 os_get_reltime(&dev->last_seen); 5446 dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY); 5447 p2p_copy_wps_info(p2p, dev, 0, &msg); 5448 5449 if (!msg.oob_go_neg_channel) { 5450 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included"); 5451 p2p_parse_free(&msg); 5452 return -1; 5453 } 5454 5455 if (msg.oob_go_neg_channel[3] == 0 && 5456 msg.oob_go_neg_channel[4] == 0) 5457 freq = 0; 5458 else 5459 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3], 5460 msg.oob_go_neg_channel[4]); 5461 if (freq < 0) { 5462 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel"); 5463 p2p_parse_free(&msg); 5464 return -1; 5465 } 5466 role = msg.oob_go_neg_channel[5]; 5467 5468 if (role == P2P_GO_IN_A_GROUP) { 5469 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq); 5470 params->go_freq = freq; 5471 } else if (role == P2P_CLIENT_IN_A_GROUP) { 5472 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz", 5473 freq); 5474 params->go_freq = freq; 5475 } else 5476 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq); 5477 dev->oob_go_neg_freq = freq; 5478 5479 if (!params->sel && role != P2P_GO_IN_A_GROUP) { 5480 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 5481 p2p->cfg->channel); 5482 if (freq < 0) { 5483 p2p_dbg(p2p, "Own listen channel not known"); 5484 p2p_parse_free(&msg); 5485 return -1; 5486 } 5487 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq); 5488 dev->oob_go_neg_freq = freq; 5489 } 5490 5491 if (msg.group_id) { 5492 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN); 5493 params->go_ssid_len = msg.group_id_len - ETH_ALEN; 5494 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN, 5495 params->go_ssid_len); 5496 } 5497 5498 if (dev->flags & P2P_DEV_USER_REJECTED) { 5499 p2p_dbg(p2p, "Do not report rejected device"); 5500 p2p_parse_free(&msg); 5501 return 0; 5502 } 5503 5504 if (!(dev->flags & P2P_DEV_REPORTED)) { 5505 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info, 5506 !(dev->flags & P2P_DEV_REPORTED_ONCE)); 5507 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE; 5508 } 5509 p2p_parse_free(&msg); 5510 5511 if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0) 5512 params->next_step = BOTH_GO; 5513 else if (role == P2P_GO_IN_A_GROUP) 5514 params->next_step = JOIN_GROUP; 5515 else if (role == P2P_CLIENT_IN_A_GROUP) { 5516 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY; 5517 params->next_step = PEER_CLIENT; 5518 } else if (p2p->num_groups > 0) 5519 params->next_step = AUTH_JOIN; 5520 else if (params->sel) 5521 params->next_step = INIT_GO_NEG; 5522 else 5523 params->next_step = RESP_GO_NEG; 5524 5525 return 0; 5526 } 5527 5528 5529 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id, 5530 int go_intent, 5531 const u8 *own_interface_addr) 5532 { 5533 5534 p2p->authorized_oob_dev_pw_id = dev_pw_id; 5535 if (dev_pw_id == 0) { 5536 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover"); 5537 return; 5538 } 5539 5540 p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover", 5541 dev_pw_id); 5542 5543 p2p->go_intent = go_intent; 5544 os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN); 5545 } 5546 5547 #endif /* CONFIG_WPS_NFC */ 5548 5549 5550 int p2p_set_passphrase_len(struct p2p_data *p2p, unsigned int len) 5551 { 5552 if (len < 8 || len > 63) 5553 return -1; 5554 p2p->cfg->passphrase_len = len; 5555 return 0; 5556 } 5557 5558 5559 void p2p_set_vendor_elems(struct p2p_data *p2p, struct wpabuf **vendor_elem) 5560 { 5561 p2p->vendor_elem = vendor_elem; 5562 } 5563 5564 5565 void p2p_go_neg_wait_timeout(void *eloop_ctx, void *timeout_ctx) 5566 { 5567 struct p2p_data *p2p = eloop_ctx; 5568 5569 p2p_dbg(p2p, 5570 "Timeout on waiting peer to become ready for GO Negotiation"); 5571 p2p_go_neg_failed(p2p, -1); 5572 } 5573 5574 5575 void p2p_set_own_pref_freq_list(struct p2p_data *p2p, 5576 const unsigned int *pref_freq_list, 5577 unsigned int size) 5578 { 5579 unsigned int i; 5580 5581 if (size > P2P_MAX_PREF_CHANNELS) 5582 size = P2P_MAX_PREF_CHANNELS; 5583 p2p->num_pref_freq = size; 5584 for (i = 0; i < size; i++) { 5585 p2p->pref_freq_list[i] = pref_freq_list[i]; 5586 p2p_dbg(p2p, "Own preferred frequency list[%u]=%u MHz", 5587 i, p2p->pref_freq_list[i]); 5588 } 5589 } 5590 5591 5592 void p2p_set_override_pref_op_chan(struct p2p_data *p2p, u8 op_class, 5593 u8 chan) 5594 { 5595 p2p->override_pref_op_class = op_class; 5596 p2p->override_pref_channel = chan; 5597 } 5598 5599 5600 struct wpabuf * p2p_build_probe_resp_template(struct p2p_data *p2p, 5601 unsigned int freq) 5602 { 5603 struct wpabuf *ies, *buf; 5604 u8 addr[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; 5605 int ret; 5606 5607 ies = p2p_build_probe_resp_ies(p2p, NULL, 0); 5608 if (!ies) { 5609 wpa_printf(MSG_ERROR, 5610 "CTRL: Failed to build Probe Response IEs"); 5611 return NULL; 5612 } 5613 5614 buf = wpabuf_alloc(200 + wpabuf_len(ies)); 5615 if (!buf) { 5616 wpabuf_free(ies); 5617 return NULL; 5618 } 5619 5620 ret = p2p_build_probe_resp_buf(p2p, buf, ies, addr, freq); 5621 wpabuf_free(ies); 5622 if (ret) { 5623 wpabuf_free(buf); 5624 return NULL; 5625 } 5626 5627 return buf; 5628 } 5629