1 /* 2 * Wi-Fi Direct - P2P provision discovery 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 "common/ieee802_11_defs.h" 13 #include "common/wpa_ctrl.h" 14 #include "wps/wps_defs.h" 15 #include "p2p_i.h" 16 #include "p2p.h" 17 18 19 /* 20 * Number of retries to attempt for provision discovery requests 21 * in case the peer is not listening. 22 */ 23 #define MAX_PROV_DISC_REQ_RETRIES 120 24 25 26 static void p2p_build_wps_ie_config_methods(struct wpabuf *buf, 27 u16 config_methods) 28 { 29 u8 *len; 30 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); 31 len = wpabuf_put(buf, 1); 32 wpabuf_put_be32(buf, WPS_DEV_OUI_WFA); 33 34 /* Config Methods */ 35 wpabuf_put_be16(buf, ATTR_CONFIG_METHODS); 36 wpabuf_put_be16(buf, 2); 37 wpabuf_put_be16(buf, config_methods); 38 39 p2p_buf_update_ie_hdr(buf, len); 40 } 41 42 43 static void p2ps_add_new_group_info(struct p2p_data *p2p, 44 struct p2p_device *dev, 45 struct wpabuf *buf) 46 { 47 int found; 48 u8 intended_addr[ETH_ALEN]; 49 u8 ssid[SSID_MAX_LEN]; 50 size_t ssid_len; 51 int group_iface; 52 unsigned int force_freq; 53 54 if (!p2p->cfg->get_go_info) 55 return; 56 57 found = p2p->cfg->get_go_info( 58 p2p->cfg->cb_ctx, intended_addr, ssid, 59 &ssid_len, &group_iface, &force_freq); 60 if (found) { 61 if (force_freq > 0) { 62 p2p->p2ps_prov->force_freq = force_freq; 63 p2p->p2ps_prov->pref_freq = 0; 64 65 if (dev) 66 p2p_prepare_channel(p2p, dev, force_freq, 0, 0); 67 } 68 p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, 69 ssid, ssid_len); 70 71 if (group_iface) 72 p2p_buf_add_intended_addr(buf, p2p->intended_addr); 73 else 74 p2p_buf_add_intended_addr(buf, intended_addr); 75 } else { 76 if (!p2p->ssid_set) { 77 p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); 78 p2p->ssid_set = 1; 79 } 80 81 /* Add pre-composed P2P Group ID */ 82 p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, 83 p2p->ssid, p2p->ssid_len); 84 85 if (group_iface) 86 p2p_buf_add_intended_addr( 87 buf, p2p->intended_addr); 88 else 89 p2p_buf_add_intended_addr( 90 buf, p2p->cfg->dev_addr); 91 } 92 } 93 94 95 static void p2ps_add_pd_req_attrs(struct p2p_data *p2p, struct p2p_device *dev, 96 struct wpabuf *buf, u16 config_methods) 97 { 98 struct p2ps_provision *prov = p2p->p2ps_prov; 99 struct p2ps_feature_capab fcap = { prov->cpt_mask, 0 }; 100 int shared_group = 0; 101 u8 ssid[SSID_MAX_LEN]; 102 size_t ssid_len; 103 u8 go_dev_addr[ETH_ALEN]; 104 u8 intended_addr[ETH_ALEN]; 105 int follow_on_req_fail = prov->status >= 0 && 106 prov->status != P2P_SC_SUCCESS_DEFERRED; 107 108 /* If we might be explicite group owner, add GO details */ 109 if (!follow_on_req_fail && 110 (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) 111 p2ps_add_new_group_info(p2p, dev, buf); 112 113 if (prov->status >= 0) 114 p2p_buf_add_status(buf, (u8) prov->status); 115 else 116 prov->method = config_methods; 117 118 if (!follow_on_req_fail) { 119 if (p2p->cfg->get_persistent_group) { 120 shared_group = p2p->cfg->get_persistent_group( 121 p2p->cfg->cb_ctx, dev->info.p2p_device_addr, 122 NULL, 0, go_dev_addr, ssid, &ssid_len, 123 intended_addr); 124 } 125 126 if (shared_group || 127 (prov->conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_NEW))) 128 p2p_buf_add_channel_list(buf, p2p->cfg->country, 129 &p2p->channels); 130 131 if ((shared_group && !is_zero_ether_addr(intended_addr)) || 132 (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) 133 p2p_buf_add_operating_channel(buf, p2p->cfg->country, 134 p2p->op_reg_class, 135 p2p->op_channel); 136 } 137 138 if (prov->status < 0 && prov->info[0]) 139 p2p_buf_add_session_info(buf, prov->info); 140 141 if (!follow_on_req_fail) 142 p2p_buf_add_connection_capability(buf, prov->conncap); 143 144 p2p_buf_add_advertisement_id(buf, prov->adv_id, prov->adv_mac); 145 146 if (!follow_on_req_fail) { 147 if (shared_group || prov->conncap == P2PS_SETUP_NEW || 148 prov->conncap == 149 (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW) || 150 prov->conncap == 151 (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT)) { 152 /* Add Config Timeout */ 153 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 154 p2p->client_timeout); 155 } 156 157 p2p_buf_add_listen_channel(buf, p2p->cfg->country, 158 p2p->cfg->reg_class, 159 p2p->cfg->channel); 160 } 161 162 p2p_buf_add_session_id(buf, prov->session_id, prov->session_mac); 163 164 p2p_buf_add_feature_capability(buf, sizeof(fcap), (const u8 *) &fcap); 165 166 if (shared_group) { 167 p2p_buf_add_persistent_group_info(buf, go_dev_addr, 168 ssid, ssid_len); 169 /* Add intended interface address if it is not added yet */ 170 if ((prov->conncap == P2PS_SETUP_NONE || 171 prov->conncap == P2PS_SETUP_CLIENT) && 172 !is_zero_ether_addr(intended_addr)) 173 p2p_buf_add_intended_addr(buf, intended_addr); 174 } 175 } 176 177 178 static struct wpabuf * p2p_build_prov_disc_req(struct p2p_data *p2p, 179 struct p2p_device *dev, 180 int join) 181 { 182 struct wpabuf *buf; 183 u8 *len; 184 size_t extra = 0; 185 u8 dialog_token = dev->dialog_token; 186 u16 config_methods = dev->req_config_methods; 187 struct p2p_device *go = join ? dev : NULL; 188 u8 group_capab; 189 190 #ifdef CONFIG_WIFI_DISPLAY 191 if (p2p->wfd_ie_prov_disc_req) 192 extra = wpabuf_len(p2p->wfd_ie_prov_disc_req); 193 #endif /* CONFIG_WIFI_DISPLAY */ 194 195 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) 196 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); 197 198 if (p2p->p2ps_prov) 199 extra += os_strlen(p2p->p2ps_prov->info) + 1 + 200 sizeof(struct p2ps_provision); 201 202 buf = wpabuf_alloc(1000 + extra); 203 if (buf == NULL) 204 return NULL; 205 206 p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_REQ, dialog_token); 207 208 len = p2p_buf_add_ie_hdr(buf); 209 210 group_capab = 0; 211 if (p2p->p2ps_prov) { 212 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; 213 group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; 214 if (p2p->cross_connect) 215 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 216 if (p2p->cfg->p2p_intra_bss) 217 group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 218 } 219 p2p_buf_add_capability(buf, p2p->dev_capab & 220 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 221 group_capab); 222 p2p_buf_add_device_info(buf, p2p, NULL); 223 if (p2p->p2ps_prov) { 224 p2ps_add_pd_req_attrs(p2p, dev, buf, config_methods); 225 } else if (go) { 226 p2p_buf_add_group_id(buf, go->info.p2p_device_addr, 227 go->oper_ssid, go->oper_ssid_len); 228 } 229 p2p_buf_update_ie_hdr(buf, len); 230 231 /* WPS IE with Config Methods attribute */ 232 p2p_build_wps_ie_config_methods(buf, config_methods); 233 234 #ifdef CONFIG_WIFI_DISPLAY 235 if (p2p->wfd_ie_prov_disc_req) 236 wpabuf_put_buf(buf, p2p->wfd_ie_prov_disc_req); 237 #endif /* CONFIG_WIFI_DISPLAY */ 238 239 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) 240 wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); 241 242 return buf; 243 } 244 245 246 static struct wpabuf * p2p_build_prov_disc_resp(struct p2p_data *p2p, 247 struct p2p_device *dev, 248 u8 dialog_token, 249 enum p2p_status_code status, 250 u16 config_methods, 251 u32 adv_id, 252 const u8 *group_id, 253 size_t group_id_len, 254 const u8 *persist_ssid, 255 size_t persist_ssid_len, 256 const u8 *fcap, 257 u16 fcap_len) 258 { 259 struct wpabuf *buf; 260 size_t extra = 0; 261 int persist = 0; 262 263 #ifdef CONFIG_WIFI_DISPLAY 264 struct wpabuf *wfd_ie = p2p->wfd_ie_prov_disc_resp; 265 if (wfd_ie && group_id) { 266 size_t i; 267 for (i = 0; i < p2p->num_groups; i++) { 268 struct p2p_group *g = p2p->groups[i]; 269 struct wpabuf *ie; 270 if (!p2p_group_is_group_id_match(g, group_id, 271 group_id_len)) 272 continue; 273 ie = p2p_group_get_wfd_ie(g); 274 if (ie) { 275 wfd_ie = ie; 276 break; 277 } 278 } 279 } 280 if (wfd_ie) 281 extra = wpabuf_len(wfd_ie); 282 #endif /* CONFIG_WIFI_DISPLAY */ 283 284 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) 285 extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); 286 287 buf = wpabuf_alloc(1000 + extra); 288 if (buf == NULL) 289 return NULL; 290 291 p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_RESP, dialog_token); 292 293 /* Add P2P IE for P2PS */ 294 if (p2p->p2ps_prov && p2p->p2ps_prov->adv_id == adv_id) { 295 u8 *len = p2p_buf_add_ie_hdr(buf); 296 struct p2ps_provision *prov = p2p->p2ps_prov; 297 u8 group_capab; 298 u8 conncap = 0; 299 300 if (status == P2P_SC_SUCCESS || 301 status == P2P_SC_SUCCESS_DEFERRED) 302 conncap = prov->conncap; 303 304 if (!status && prov->status != -1) 305 status = prov->status; 306 307 p2p_buf_add_status(buf, status); 308 group_capab = P2P_GROUP_CAPAB_PERSISTENT_GROUP | 309 P2P_GROUP_CAPAB_PERSISTENT_RECONN; 310 if (p2p->cross_connect) 311 group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; 312 if (p2p->cfg->p2p_intra_bss) 313 group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; 314 p2p_buf_add_capability(buf, p2p->dev_capab & 315 ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 316 group_capab); 317 p2p_buf_add_device_info(buf, p2p, NULL); 318 319 if (persist_ssid && p2p->cfg->get_persistent_group && dev && 320 (status == P2P_SC_SUCCESS || 321 status == P2P_SC_SUCCESS_DEFERRED)) { 322 u8 ssid[SSID_MAX_LEN]; 323 size_t ssid_len; 324 u8 go_dev_addr[ETH_ALEN]; 325 u8 intended_addr[ETH_ALEN]; 326 327 persist = p2p->cfg->get_persistent_group( 328 p2p->cfg->cb_ctx, 329 dev->info.p2p_device_addr, 330 persist_ssid, persist_ssid_len, go_dev_addr, 331 ssid, &ssid_len, intended_addr); 332 if (persist) { 333 p2p_buf_add_persistent_group_info( 334 buf, go_dev_addr, ssid, ssid_len); 335 if (!is_zero_ether_addr(intended_addr)) 336 p2p_buf_add_intended_addr( 337 buf, intended_addr); 338 } 339 } 340 341 if (!persist && (conncap & P2PS_SETUP_GROUP_OWNER)) 342 p2ps_add_new_group_info(p2p, dev, buf); 343 344 /* Add Operating Channel if conncap indicates GO */ 345 if (persist || (conncap & P2PS_SETUP_GROUP_OWNER)) { 346 if (p2p->op_reg_class && p2p->op_channel) 347 p2p_buf_add_operating_channel( 348 buf, p2p->cfg->country, 349 p2p->op_reg_class, 350 p2p->op_channel); 351 else 352 p2p_buf_add_operating_channel( 353 buf, p2p->cfg->country, 354 p2p->cfg->op_reg_class, 355 p2p->cfg->op_channel); 356 } 357 358 if (persist || 359 (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) 360 p2p_buf_add_channel_list(buf, p2p->cfg->country, 361 &p2p->channels); 362 363 if (!persist && conncap) 364 p2p_buf_add_connection_capability(buf, conncap); 365 366 p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac); 367 368 if (persist || 369 (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) 370 p2p_buf_add_config_timeout(buf, p2p->go_timeout, 371 p2p->client_timeout); 372 373 p2p_buf_add_session_id(buf, prov->session_id, 374 prov->session_mac); 375 376 p2p_buf_add_feature_capability(buf, fcap_len, fcap); 377 p2p_buf_update_ie_hdr(buf, len); 378 } else if (status != P2P_SC_SUCCESS || adv_id) { 379 u8 *len = p2p_buf_add_ie_hdr(buf); 380 381 p2p_buf_add_status(buf, status); 382 383 if (p2p->p2ps_prov) 384 p2p_buf_add_advertisement_id(buf, adv_id, 385 p2p->p2ps_prov->adv_mac); 386 387 p2p_buf_update_ie_hdr(buf, len); 388 } 389 390 /* WPS IE with Config Methods attribute */ 391 p2p_build_wps_ie_config_methods(buf, config_methods); 392 393 #ifdef CONFIG_WIFI_DISPLAY 394 if (wfd_ie) 395 wpabuf_put_buf(buf, wfd_ie); 396 #endif /* CONFIG_WIFI_DISPLAY */ 397 398 if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) 399 wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); 400 401 return buf; 402 } 403 404 405 static int p2ps_setup_p2ps_prov(struct p2p_data *p2p, u32 adv_id, 406 u32 session_id, u16 method, 407 const u8 *session_mac, const u8 *adv_mac) 408 { 409 struct p2ps_provision *tmp; 410 411 if (!p2p->p2ps_prov) { 412 p2p->p2ps_prov = os_zalloc(sizeof(struct p2ps_provision) + 1); 413 if (!p2p->p2ps_prov) 414 return -1; 415 } else { 416 os_memset(p2p->p2ps_prov, 0, sizeof(struct p2ps_provision) + 1); 417 } 418 419 tmp = p2p->p2ps_prov; 420 tmp->adv_id = adv_id; 421 tmp->session_id = session_id; 422 tmp->method = method; 423 os_memcpy(tmp->session_mac, session_mac, ETH_ALEN); 424 os_memcpy(tmp->adv_mac, adv_mac, ETH_ALEN); 425 tmp->info[0] = '\0'; 426 427 return 0; 428 } 429 430 431 static u8 p2ps_own_preferred_cpt(const u8 *cpt_priority, u8 req_cpt_mask) 432 { 433 int i; 434 435 for (i = 0; cpt_priority[i]; i++) 436 if (req_cpt_mask & cpt_priority[i]) 437 return cpt_priority[i]; 438 439 return 0; 440 } 441 442 443 /* Check if the message contains a valid P2PS PD Request */ 444 static int p2ps_validate_pd_req(struct p2p_data *p2p, struct p2p_message *msg, 445 const u8 *addr) 446 { 447 u8 group_id = 0; 448 u8 intended_addr = 0; 449 u8 operating_channel = 0; 450 u8 channel_list = 0; 451 u8 config_timeout = 0; 452 u8 listen_channel = 0; 453 454 #define P2PS_PD_REQ_CHECK(_val, _attr) \ 455 do { \ 456 if ((_val) && !msg->_attr) { \ 457 p2p_dbg(p2p, "Not P2PS PD Request. Missing %s", #_attr); \ 458 return -1; \ 459 } \ 460 } while (0) 461 462 P2PS_PD_REQ_CHECK(1, adv_id); 463 P2PS_PD_REQ_CHECK(1, session_id); 464 P2PS_PD_REQ_CHECK(1, session_mac); 465 P2PS_PD_REQ_CHECK(1, adv_mac); 466 P2PS_PD_REQ_CHECK(1, capability); 467 P2PS_PD_REQ_CHECK(1, p2p_device_info); 468 P2PS_PD_REQ_CHECK(1, feature_cap); 469 470 /* 471 * We don't need to check Connection Capability, Persistent Group, 472 * and related attributes for follow-on PD Request with a status 473 * other than SUCCESS_DEFERRED. 474 */ 475 if (msg->status && *msg->status != P2P_SC_SUCCESS_DEFERRED) 476 return 0; 477 478 P2PS_PD_REQ_CHECK(1, conn_cap); 479 480 /* 481 * Note 1: A feature capability attribute structure can be changed 482 * in the future. The assumption is that such modifications are 483 * backward compatible, therefore we allow processing of msg.feature_cap 484 * exceeding the size of the p2ps_feature_capab structure. 485 * Note 2: Verification of msg.feature_cap_len below has to be changed 486 * to allow 2 byte feature capability processing if 487 * struct p2ps_feature_capab is extended to include additional fields 488 * and it affects the structure size. 489 */ 490 if (msg->feature_cap_len < sizeof(struct p2ps_feature_capab)) { 491 p2p_dbg(p2p, "P2PS: Invalid feature capability len"); 492 return -1; 493 } 494 495 switch (*msg->conn_cap) { 496 case P2PS_SETUP_NEW: 497 group_id = 1; 498 intended_addr = 1; 499 operating_channel = 1; 500 channel_list = 1; 501 config_timeout = 1; 502 listen_channel = 1; 503 break; 504 case P2PS_SETUP_CLIENT: 505 channel_list = 1; 506 listen_channel = 1; 507 break; 508 case P2PS_SETUP_GROUP_OWNER: 509 group_id = 1; 510 intended_addr = 1; 511 operating_channel = 1; 512 break; 513 case P2PS_SETUP_NEW | P2PS_SETUP_GROUP_OWNER: 514 group_id = 1; 515 operating_channel = 1; 516 intended_addr = 1; 517 channel_list = 1; 518 config_timeout = 1; 519 break; 520 case P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER: 521 group_id = 1; 522 intended_addr = 1; 523 operating_channel = 1; 524 channel_list = 1; 525 config_timeout = 1; 526 break; 527 default: 528 p2p_dbg(p2p, "Invalid P2PS PD connection capability"); 529 return -1; 530 } 531 532 if (msg->persistent_dev) { 533 channel_list = 1; 534 config_timeout = 1; 535 if (os_memcmp(msg->persistent_dev, addr, ETH_ALEN) == 0) { 536 intended_addr = 1; 537 operating_channel = 1; 538 } 539 } 540 541 P2PS_PD_REQ_CHECK(group_id, group_id); 542 P2PS_PD_REQ_CHECK(intended_addr, intended_addr); 543 P2PS_PD_REQ_CHECK(operating_channel, operating_channel); 544 P2PS_PD_REQ_CHECK(channel_list, channel_list); 545 P2PS_PD_REQ_CHECK(config_timeout, config_timeout); 546 P2PS_PD_REQ_CHECK(listen_channel, listen_channel); 547 548 #undef P2PS_PD_REQ_CHECK 549 550 return 0; 551 } 552 553 554 void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa, 555 const u8 *data, size_t len, int rx_freq) 556 { 557 struct p2p_message msg; 558 struct p2p_device *dev; 559 int freq; 560 enum p2p_status_code reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 561 struct wpabuf *resp; 562 u32 adv_id = 0; 563 struct p2ps_advertisement *p2ps_adv = NULL; 564 u8 conncap = P2PS_SETUP_NEW; 565 u8 auto_accept = 0; 566 u32 session_id = 0; 567 u8 session_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; 568 u8 adv_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; 569 const u8 *group_mac; 570 int passwd_id = DEV_PW_DEFAULT; 571 u16 config_methods; 572 u16 allowed_config_methods = WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD; 573 struct p2ps_feature_capab resp_fcap = { 0, 0 }; 574 struct p2ps_feature_capab *req_fcap = NULL; 575 u8 remote_conncap; 576 u16 method; 577 578 if (p2p_parse(data, len, &msg)) 579 return; 580 581 p2p_dbg(p2p, "Received Provision Discovery Request from " MACSTR 582 " with config methods 0x%x (freq=%d)", 583 MAC2STR(sa), msg.wps_config_methods, rx_freq); 584 group_mac = msg.intended_addr; 585 586 dev = p2p_get_device(p2p, sa); 587 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 588 p2p_dbg(p2p, "Provision Discovery Request from unknown peer " 589 MACSTR, MAC2STR(sa)); 590 591 if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, 592 0)) { 593 p2p_dbg(p2p, "Provision Discovery Request add device failed " 594 MACSTR, MAC2STR(sa)); 595 goto out; 596 } 597 598 if (!dev) { 599 dev = p2p_get_device(p2p, sa); 600 if (!dev) { 601 p2p_dbg(p2p, 602 "Provision Discovery device not found " 603 MACSTR, MAC2STR(sa)); 604 goto out; 605 } 606 } 607 } else if (msg.wfd_subelems) { 608 wpabuf_free(dev->info.wfd_subelems); 609 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 610 } 611 612 if (!msg.adv_id) { 613 allowed_config_methods |= WPS_CONFIG_PUSHBUTTON; 614 if (!(msg.wps_config_methods & allowed_config_methods)) { 615 p2p_dbg(p2p, 616 "Unsupported Config Methods in Provision Discovery Request"); 617 goto out; 618 } 619 620 /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */ 621 if (msg.group_id) { 622 size_t i; 623 624 for (i = 0; i < p2p->num_groups; i++) { 625 if (p2p_group_is_group_id_match( 626 p2p->groups[i], 627 msg.group_id, msg.group_id_len)) 628 break; 629 } 630 if (i == p2p->num_groups) { 631 p2p_dbg(p2p, 632 "PD request for unknown P2P Group ID - reject"); 633 goto out; 634 } 635 } 636 } else { 637 allowed_config_methods |= WPS_CONFIG_P2PS; 638 639 /* 640 * Set adv_id here, so in case of an error, a P2PS PD Response 641 * will be sent. 642 */ 643 adv_id = WPA_GET_LE32(msg.adv_id); 644 if (p2ps_validate_pd_req(p2p, &msg, sa) < 0) { 645 reject = P2P_SC_FAIL_INVALID_PARAMS; 646 goto out; 647 } 648 649 req_fcap = (struct p2ps_feature_capab *) msg.feature_cap; 650 651 os_memcpy(session_mac, msg.session_mac, ETH_ALEN); 652 os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); 653 654 session_id = WPA_GET_LE32(msg.session_id); 655 656 if (msg.conn_cap) 657 conncap = *msg.conn_cap; 658 659 /* 660 * We need to verify a P2PS config methog in an initial PD 661 * request or in a follow-on PD request with the status 662 * SUCCESS_DEFERRED. 663 */ 664 if ((!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) && 665 !(msg.wps_config_methods & allowed_config_methods)) { 666 p2p_dbg(p2p, 667 "Unsupported Config Methods in Provision Discovery Request"); 668 goto out; 669 } 670 671 /* 672 * TODO: since we don't support multiple PD, reject PD request 673 * if we are in the middle of P2PS PD with some other peer 674 */ 675 } 676 677 dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | 678 P2P_DEV_PD_PEER_KEYPAD | 679 P2P_DEV_PD_PEER_P2PS); 680 681 if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) { 682 p2p_dbg(p2p, "Peer " MACSTR 683 " requested us to show a PIN on display", MAC2STR(sa)); 684 dev->flags |= P2P_DEV_PD_PEER_KEYPAD; 685 passwd_id = DEV_PW_USER_SPECIFIED; 686 } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 687 p2p_dbg(p2p, "Peer " MACSTR 688 " requested us to write its PIN using keypad", 689 MAC2STR(sa)); 690 dev->flags |= P2P_DEV_PD_PEER_DISPLAY; 691 passwd_id = DEV_PW_REGISTRAR_SPECIFIED; 692 } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { 693 p2p_dbg(p2p, "Peer " MACSTR " requesting P2PS PIN", 694 MAC2STR(sa)); 695 dev->flags |= P2P_DEV_PD_PEER_P2PS; 696 passwd_id = DEV_PW_P2PS_DEFAULT; 697 } 698 699 /* Remove stale persistent groups */ 700 if (p2p->cfg->remove_stale_groups) { 701 p2p->cfg->remove_stale_groups( 702 p2p->cfg->cb_ctx, dev->info.p2p_device_addr, 703 msg.persistent_dev, 704 msg.persistent_ssid, msg.persistent_ssid_len); 705 } 706 707 reject = P2P_SC_SUCCESS; 708 709 /* 710 * End of a legacy P2P PD Request processing, from this point continue 711 * with P2PS one. 712 */ 713 if (!msg.adv_id) 714 goto out; 715 716 remote_conncap = conncap; 717 718 if (!msg.status) { 719 unsigned int forced_freq, pref_freq; 720 721 if (os_memcmp(p2p->cfg->dev_addr, msg.adv_mac, ETH_ALEN)) { 722 p2p_dbg(p2p, 723 "P2PS PD adv mac does not match the local one"); 724 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 725 goto out; 726 } 727 728 p2ps_adv = p2p_service_p2ps_id(p2p, adv_id); 729 if (!p2ps_adv) { 730 p2p_dbg(p2p, "P2PS PD invalid adv_id=0x%X", adv_id); 731 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 732 goto out; 733 } 734 p2p_dbg(p2p, "adv_id: 0x%X, p2ps_adv: %p", adv_id, p2ps_adv); 735 736 auto_accept = p2ps_adv->auto_accept; 737 conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, 738 conncap, auto_accept, 739 &forced_freq, 740 &pref_freq); 741 742 p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d", 743 auto_accept, remote_conncap, conncap); 744 745 p2p_prepare_channel(p2p, dev, forced_freq, pref_freq, 0); 746 747 resp_fcap.cpt = p2ps_own_preferred_cpt(p2ps_adv->cpt_priority, 748 req_fcap->cpt); 749 750 p2p_dbg(p2p, "cpt: service:0x%x remote:0x%x result:0x%x", 751 p2ps_adv->cpt_mask, req_fcap->cpt, resp_fcap.cpt); 752 753 if (!resp_fcap.cpt) { 754 p2p_dbg(p2p, 755 "Incompatible P2PS feature capability CPT bitmask"); 756 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 757 } else if (p2ps_adv->config_methods && 758 !(msg.wps_config_methods & 759 p2ps_adv->config_methods)) { 760 p2p_dbg(p2p, 761 "Unsupported config methods in Provision Discovery Request (own=0x%x peer=0x%x)", 762 p2ps_adv->config_methods, 763 msg.wps_config_methods); 764 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 765 } else if (!p2ps_adv->state) { 766 p2p_dbg(p2p, "P2PS state unavailable"); 767 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 768 } else if (!conncap) { 769 p2p_dbg(p2p, "Conncap resolution failed"); 770 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 771 } 772 773 if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 774 p2p_dbg(p2p, "Keypad - always defer"); 775 auto_accept = 0; 776 } 777 778 if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || 779 msg.persistent_dev) && conncap != P2PS_SETUP_NEW && 780 msg.channel_list && msg.channel_list_len && 781 p2p_peer_channels_check(p2p, &p2p->channels, dev, 782 msg.channel_list, 783 msg.channel_list_len) < 0) { 784 p2p_dbg(p2p, 785 "No common channels - force deferred flow"); 786 auto_accept = 0; 787 } 788 789 if (((remote_conncap & P2PS_SETUP_GROUP_OWNER) || 790 msg.persistent_dev) && msg.operating_channel) { 791 struct p2p_channels intersect; 792 793 /* 794 * There are cases where only the operating channel is 795 * provided. This requires saving the channel as the 796 * supported channel list, and verifying that it is 797 * supported. 798 */ 799 if (dev->channels.reg_classes == 0 || 800 !p2p_channels_includes(&dev->channels, 801 msg.operating_channel[3], 802 msg.operating_channel[4])) { 803 struct p2p_channels *ch = &dev->channels; 804 805 os_memset(ch, 0, sizeof(*ch)); 806 ch->reg_class[0].reg_class = 807 msg.operating_channel[3]; 808 ch->reg_class[0].channel[0] = 809 msg.operating_channel[4]; 810 ch->reg_class[0].channels = 1; 811 ch->reg_classes = 1; 812 } 813 814 p2p_channels_intersect(&p2p->channels, &dev->channels, 815 &intersect); 816 817 if (intersect.reg_classes == 0) { 818 p2p_dbg(p2p, 819 "No common channels - force deferred flow"); 820 auto_accept = 0; 821 } 822 } 823 824 if (auto_accept || reject != P2P_SC_SUCCESS) { 825 struct p2ps_provision *tmp; 826 827 if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, 828 msg.wps_config_methods, 829 session_mac, adv_mac) < 0) { 830 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 831 goto out; 832 } 833 834 tmp = p2p->p2ps_prov; 835 tmp->force_freq = forced_freq; 836 tmp->pref_freq = pref_freq; 837 if (conncap) { 838 tmp->conncap = conncap; 839 tmp->status = P2P_SC_SUCCESS; 840 } else { 841 tmp->conncap = auto_accept; 842 tmp->status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 843 } 844 845 if (reject != P2P_SC_SUCCESS) 846 goto out; 847 } 848 } 849 850 if (!msg.status && !auto_accept && 851 (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) { 852 struct p2ps_provision *tmp; 853 854 if (!conncap) { 855 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 856 goto out; 857 } 858 859 if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, 860 msg.wps_config_methods, 861 session_mac, adv_mac) < 0) { 862 reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 863 goto out; 864 } 865 tmp = p2p->p2ps_prov; 866 reject = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 867 tmp->status = reject; 868 } 869 870 /* Not a P2PS Follow-on PD */ 871 if (!msg.status) 872 goto out; 873 874 if (*msg.status && *msg.status != P2P_SC_SUCCESS_DEFERRED) { 875 reject = *msg.status; 876 goto out; 877 } 878 879 if (*msg.status != P2P_SC_SUCCESS_DEFERRED || !p2p->p2ps_prov) 880 goto out; 881 882 if (p2p->p2ps_prov->adv_id != adv_id || 883 os_memcmp(p2p->p2ps_prov->adv_mac, msg.adv_mac, ETH_ALEN)) { 884 p2p_dbg(p2p, 885 "P2PS Follow-on PD with mismatch Advertisement ID/MAC"); 886 goto out; 887 } 888 889 if (p2p->p2ps_prov->session_id != session_id || 890 os_memcmp(p2p->p2ps_prov->session_mac, msg.session_mac, ETH_ALEN)) { 891 p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Session ID/MAC"); 892 goto out; 893 } 894 895 method = p2p->p2ps_prov->method; 896 897 conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, 898 remote_conncap, 899 p2p->p2ps_prov->conncap, 900 &p2p->p2ps_prov->force_freq, 901 &p2p->p2ps_prov->pref_freq); 902 903 resp_fcap.cpt = p2ps_own_preferred_cpt(p2p->p2ps_prov->cpt_priority, 904 req_fcap->cpt); 905 906 p2p_dbg(p2p, "cpt: local:0x%x remote:0x%x result:0x%x", 907 p2p->p2ps_prov->cpt_mask, req_fcap->cpt, resp_fcap.cpt); 908 909 p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, 910 p2p->p2ps_prov->pref_freq, 0); 911 912 /* 913 * Ensure that if we asked for PIN originally, our method is consistent 914 * with original request. 915 */ 916 if (method & WPS_CONFIG_DISPLAY) 917 method = WPS_CONFIG_KEYPAD; 918 else if (method & WPS_CONFIG_KEYPAD) 919 method = WPS_CONFIG_DISPLAY; 920 921 if (!conncap || !(msg.wps_config_methods & method)) { 922 /* 923 * Reject this "Deferred Accept* 924 * if incompatible conncap or method 925 */ 926 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 927 } else if (!resp_fcap.cpt) { 928 p2p_dbg(p2p, 929 "Incompatible P2PS feature capability CPT bitmask"); 930 reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; 931 } else if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || 932 msg.persistent_dev) && conncap != P2PS_SETUP_NEW && 933 msg.channel_list && msg.channel_list_len && 934 p2p_peer_channels_check(p2p, &p2p->channels, dev, 935 msg.channel_list, 936 msg.channel_list_len) < 0) { 937 p2p_dbg(p2p, 938 "No common channels in Follow-On Provision Discovery Request"); 939 reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; 940 } else { 941 reject = P2P_SC_SUCCESS; 942 } 943 944 dev->oper_freq = 0; 945 if (reject == P2P_SC_SUCCESS || reject == P2P_SC_SUCCESS_DEFERRED) { 946 u8 tmp; 947 948 if (msg.operating_channel) 949 dev->oper_freq = 950 p2p_channel_to_freq(msg.operating_channel[3], 951 msg.operating_channel[4]); 952 953 if ((conncap & P2PS_SETUP_GROUP_OWNER) && 954 p2p_go_select_channel(p2p, dev, &tmp) < 0) 955 reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; 956 } 957 958 p2p->p2ps_prov->status = reject; 959 p2p->p2ps_prov->conncap = conncap; 960 961 out: 962 if (reject == P2P_SC_SUCCESS || 963 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) 964 config_methods = msg.wps_config_methods; 965 else 966 config_methods = 0; 967 968 /* 969 * Send PD Response for an initial PD Request or for follow-on 970 * PD Request with P2P_SC_SUCCESS_DEFERRED status. 971 */ 972 if (!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) { 973 resp = p2p_build_prov_disc_resp(p2p, dev, msg.dialog_token, 974 reject, config_methods, adv_id, 975 msg.group_id, msg.group_id_len, 976 msg.persistent_ssid, 977 msg.persistent_ssid_len, 978 (const u8 *) &resp_fcap, 979 sizeof(resp_fcap)); 980 if (!resp) { 981 p2p_parse_free(&msg); 982 return; 983 } 984 p2p_dbg(p2p, "Sending Provision Discovery Response"); 985 if (rx_freq > 0) 986 freq = rx_freq; 987 else 988 freq = p2p_channel_to_freq(p2p->cfg->reg_class, 989 p2p->cfg->channel); 990 if (freq < 0) { 991 p2p_dbg(p2p, "Unknown regulatory class/channel"); 992 wpabuf_free(resp); 993 p2p_parse_free(&msg); 994 return; 995 } 996 p2p->pending_action_state = P2P_PENDING_PD_RESPONSE; 997 if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, 998 p2p->cfg->dev_addr, 999 wpabuf_head(resp), wpabuf_len(resp), 1000 50) < 0) 1001 p2p_dbg(p2p, "Failed to send Action frame"); 1002 else 1003 p2p->send_action_in_progress = 1; 1004 1005 wpabuf_free(resp); 1006 } 1007 1008 if (!dev) { 1009 p2p_parse_free(&msg); 1010 return; 1011 } 1012 1013 freq = 0; 1014 if (reject == P2P_SC_SUCCESS && conncap == P2PS_SETUP_GROUP_OWNER) { 1015 freq = p2p_channel_to_freq(p2p->op_reg_class, 1016 p2p->op_channel); 1017 if (freq < 0) 1018 freq = 0; 1019 } 1020 1021 if (!p2p->cfg->p2ps_prov_complete) { 1022 /* Don't emit anything */ 1023 } else if (msg.status && *msg.status != P2P_SC_SUCCESS && 1024 *msg.status != P2P_SC_SUCCESS_DEFERRED) { 1025 reject = *msg.status; 1026 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, 1027 sa, adv_mac, session_mac, 1028 NULL, adv_id, session_id, 1029 0, 0, msg.persistent_ssid, 1030 msg.persistent_ssid_len, 1031 0, 0, NULL, NULL, 0, freq, 1032 NULL, 0); 1033 } else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && 1034 p2p->p2ps_prov) { 1035 p2p->p2ps_prov->status = reject; 1036 p2p->p2ps_prov->conncap = conncap; 1037 1038 if (reject != P2P_SC_SUCCESS) 1039 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, 1040 sa, adv_mac, session_mac, 1041 NULL, adv_id, 1042 session_id, conncap, 0, 1043 msg.persistent_ssid, 1044 msg.persistent_ssid_len, 0, 1045 0, NULL, NULL, 0, freq, 1046 NULL, 0); 1047 else 1048 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, 1049 *msg.status, 1050 sa, adv_mac, session_mac, 1051 group_mac, adv_id, 1052 session_id, conncap, 1053 passwd_id, 1054 msg.persistent_ssid, 1055 msg.persistent_ssid_len, 0, 1056 0, NULL, 1057 (const u8 *) &resp_fcap, 1058 sizeof(resp_fcap), freq, 1059 NULL, 0); 1060 } else if (msg.status && p2p->p2ps_prov) { 1061 p2p->p2ps_prov->status = P2P_SC_SUCCESS; 1062 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa, 1063 adv_mac, session_mac, group_mac, 1064 adv_id, session_id, conncap, 1065 passwd_id, 1066 msg.persistent_ssid, 1067 msg.persistent_ssid_len, 1068 0, 0, NULL, 1069 (const u8 *) &resp_fcap, 1070 sizeof(resp_fcap), freq, NULL, 0); 1071 } else if (msg.status) { 1072 } else if (auto_accept && reject == P2P_SC_SUCCESS) { 1073 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, 1074 sa, adv_mac, session_mac, 1075 group_mac, adv_id, session_id, 1076 conncap, passwd_id, 1077 msg.persistent_ssid, 1078 msg.persistent_ssid_len, 1079 0, 0, NULL, 1080 (const u8 *) &resp_fcap, 1081 sizeof(resp_fcap), freq, 1082 msg.group_id ? 1083 msg.group_id + ETH_ALEN : NULL, 1084 msg.group_id ? 1085 msg.group_id_len - ETH_ALEN : 0); 1086 } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1087 (!msg.session_info || !msg.session_info_len)) { 1088 p2p->p2ps_prov->method = msg.wps_config_methods; 1089 1090 p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, 1091 sa, adv_mac, session_mac, 1092 group_mac, adv_id, session_id, 1093 conncap, passwd_id, 1094 msg.persistent_ssid, 1095 msg.persistent_ssid_len, 1096 0, 1, NULL, 1097 (const u8 *) &resp_fcap, 1098 sizeof(resp_fcap), freq, NULL, 0); 1099 } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 1100 size_t buf_len = msg.session_info_len; 1101 char *buf = os_malloc(2 * buf_len + 1); 1102 1103 if (buf) { 1104 p2p->p2ps_prov->method = msg.wps_config_methods; 1105 1106 utf8_escape((char *) msg.session_info, buf_len, 1107 buf, 2 * buf_len + 1); 1108 1109 p2p->cfg->p2ps_prov_complete( 1110 p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, 1111 adv_mac, session_mac, group_mac, adv_id, 1112 session_id, conncap, passwd_id, 1113 msg.persistent_ssid, msg.persistent_ssid_len, 1114 0, 1, buf, 1115 (const u8 *) &resp_fcap, sizeof(resp_fcap), 1116 freq, NULL, 0); 1117 1118 os_free(buf); 1119 } 1120 } 1121 1122 /* 1123 * prov_disc_req callback is used to generate P2P-PROV-DISC-ENTER-PIN, 1124 * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. 1125 * Call it either on legacy P2P PD or on P2PS PD only if we need to 1126 * enter/show PIN. 1127 * 1128 * The callback is called in the following cases: 1129 * 1. Legacy P2P PD request, response status SUCCESS 1130 * 2. P2PS advertiser, method: DISPLAY, autoaccept: TRUE, 1131 * response status: SUCCESS 1132 * 3. P2PS advertiser, method DISPLAY, autoaccept: FALSE, 1133 * response status: INFO_CURRENTLY_UNAVAILABLE 1134 * 4. P2PS advertiser, method: KEYPAD, autoaccept==any, 1135 * response status: INFO_CURRENTLY_UNAVAILABLE 1136 * 5. P2PS follow-on with SUCCESS_DEFERRED, 1137 * advertiser role: DISPLAY, autoaccept: FALSE, 1138 * seeker: KEYPAD, response status: SUCCESS 1139 */ 1140 if (p2p->cfg->prov_disc_req && 1141 ((reject == P2P_SC_SUCCESS && !msg.adv_id) || 1142 (!msg.status && 1143 (reject == P2P_SC_SUCCESS || 1144 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) && 1145 passwd_id == DEV_PW_USER_SPECIFIED) || 1146 (!msg.status && 1147 reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1148 passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || 1149 (reject == P2P_SC_SUCCESS && 1150 msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && 1151 passwd_id == DEV_PW_REGISTRAR_SPECIFIED))) { 1152 const u8 *dev_addr = sa; 1153 1154 if (msg.p2p_device_addr) 1155 dev_addr = msg.p2p_device_addr; 1156 p2p->cfg->prov_disc_req(p2p->cfg->cb_ctx, sa, 1157 msg.wps_config_methods, 1158 dev_addr, msg.pri_dev_type, 1159 msg.device_name, msg.config_methods, 1160 msg.capability ? msg.capability[0] : 0, 1161 msg.capability ? msg.capability[1] : 1162 0, 1163 msg.group_id, msg.group_id_len); 1164 } 1165 1166 if (reject == P2P_SC_SUCCESS) { 1167 switch (config_methods) { 1168 case WPS_CONFIG_DISPLAY: 1169 dev->wps_prov_info = WPS_CONFIG_KEYPAD; 1170 break; 1171 case WPS_CONFIG_KEYPAD: 1172 dev->wps_prov_info = WPS_CONFIG_DISPLAY; 1173 break; 1174 case WPS_CONFIG_PUSHBUTTON: 1175 dev->wps_prov_info = WPS_CONFIG_PUSHBUTTON; 1176 break; 1177 case WPS_CONFIG_P2PS: 1178 dev->wps_prov_info = WPS_CONFIG_P2PS; 1179 break; 1180 default: 1181 dev->wps_prov_info = 0; 1182 break; 1183 } 1184 1185 if (msg.intended_addr) 1186 os_memcpy(dev->interface_addr, msg.intended_addr, 1187 ETH_ALEN); 1188 } 1189 p2p_parse_free(&msg); 1190 } 1191 1192 1193 static int p2p_validate_p2ps_pd_resp(struct p2p_data *p2p, 1194 struct p2p_message *msg) 1195 { 1196 u8 conn_cap_go = 0; 1197 u8 conn_cap_cli = 0; 1198 u32 session_id; 1199 u32 adv_id; 1200 1201 #define P2PS_PD_RESP_CHECK(_val, _attr) \ 1202 do { \ 1203 if ((_val) && !msg->_attr) { \ 1204 p2p_dbg(p2p, "P2PS PD Response missing " #_attr); \ 1205 return -1; \ 1206 } \ 1207 } while (0) 1208 1209 P2PS_PD_RESP_CHECK(1, status); 1210 P2PS_PD_RESP_CHECK(1, adv_id); 1211 P2PS_PD_RESP_CHECK(1, adv_mac); 1212 P2PS_PD_RESP_CHECK(1, capability); 1213 P2PS_PD_RESP_CHECK(1, p2p_device_info); 1214 P2PS_PD_RESP_CHECK(1, session_id); 1215 P2PS_PD_RESP_CHECK(1, session_mac); 1216 P2PS_PD_RESP_CHECK(1, feature_cap); 1217 1218 session_id = WPA_GET_LE32(msg->session_id); 1219 adv_id = WPA_GET_LE32(msg->adv_id); 1220 1221 if (p2p->p2ps_prov->session_id != session_id) { 1222 p2p_dbg(p2p, 1223 "Ignore PD Response with unexpected Session ID"); 1224 return -1; 1225 } 1226 1227 if (os_memcmp(p2p->p2ps_prov->session_mac, msg->session_mac, 1228 ETH_ALEN)) { 1229 p2p_dbg(p2p, 1230 "Ignore PD Response with unexpected Session MAC"); 1231 return -1; 1232 } 1233 1234 if (p2p->p2ps_prov->adv_id != adv_id) { 1235 p2p_dbg(p2p, 1236 "Ignore PD Response with unexpected Advertisement ID"); 1237 return -1; 1238 } 1239 1240 if (os_memcmp(p2p->p2ps_prov->adv_mac, msg->adv_mac, ETH_ALEN) != 0) { 1241 p2p_dbg(p2p, 1242 "Ignore PD Response with unexpected Advertisement MAC"); 1243 return -1; 1244 } 1245 1246 if (msg->listen_channel) { 1247 p2p_dbg(p2p, 1248 "Ignore malformed PD Response - unexpected Listen Channel"); 1249 return -1; 1250 } 1251 1252 if (*msg->status == P2P_SC_SUCCESS && 1253 !(!!msg->conn_cap ^ !!msg->persistent_dev)) { 1254 p2p_dbg(p2p, 1255 "Ignore malformed PD Response - either conn_cap or persistent group should be present"); 1256 return -1; 1257 } 1258 1259 if (msg->persistent_dev && *msg->status != P2P_SC_SUCCESS) { 1260 p2p_dbg(p2p, 1261 "Ignore malformed PD Response - persistent group is present, but the status isn't success"); 1262 return -1; 1263 } 1264 1265 if (msg->conn_cap) { 1266 conn_cap_go = *msg->conn_cap == P2PS_SETUP_GROUP_OWNER; 1267 conn_cap_cli = *msg->conn_cap == P2PS_SETUP_CLIENT; 1268 } 1269 1270 P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, 1271 channel_list); 1272 P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, 1273 config_timeout); 1274 1275 P2PS_PD_RESP_CHECK(conn_cap_go, group_id); 1276 P2PS_PD_RESP_CHECK(conn_cap_go, intended_addr); 1277 P2PS_PD_RESP_CHECK(conn_cap_go, operating_channel); 1278 /* 1279 * TODO: Also validate that operating channel is present if the device 1280 * is a GO in a persistent group. We can't do it here since we don't 1281 * know what is the role of the peer. It should be probably done in 1282 * p2ps_prov_complete callback, but currently operating channel isn't 1283 * passed to it. 1284 */ 1285 1286 #undef P2PS_PD_RESP_CHECK 1287 1288 return 0; 1289 } 1290 1291 1292 void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa, 1293 const u8 *data, size_t len) 1294 { 1295 struct p2p_message msg; 1296 struct p2p_device *dev; 1297 u16 report_config_methods = 0, req_config_methods; 1298 u8 status = P2P_SC_SUCCESS; 1299 u32 adv_id = 0; 1300 u8 conncap = P2PS_SETUP_NEW; 1301 u8 adv_mac[ETH_ALEN]; 1302 const u8 *group_mac; 1303 int passwd_id = DEV_PW_DEFAULT; 1304 int p2ps_seeker; 1305 1306 if (p2p_parse(data, len, &msg)) 1307 return; 1308 1309 if (p2p->p2ps_prov && p2p_validate_p2ps_pd_resp(p2p, &msg)) { 1310 p2p_parse_free(&msg); 1311 return; 1312 } 1313 1314 /* Parse the P2PS members present */ 1315 if (msg.status) 1316 status = *msg.status; 1317 1318 group_mac = msg.intended_addr; 1319 1320 if (msg.adv_mac) 1321 os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); 1322 else 1323 os_memset(adv_mac, 0, ETH_ALEN); 1324 1325 if (msg.adv_id) 1326 adv_id = WPA_GET_LE32(msg.adv_id); 1327 1328 if (msg.conn_cap) { 1329 conncap = *msg.conn_cap; 1330 1331 /* Switch bits to local relative */ 1332 switch (conncap) { 1333 case P2PS_SETUP_GROUP_OWNER: 1334 conncap = P2PS_SETUP_CLIENT; 1335 break; 1336 case P2PS_SETUP_CLIENT: 1337 conncap = P2PS_SETUP_GROUP_OWNER; 1338 break; 1339 } 1340 } 1341 1342 p2p_dbg(p2p, "Received Provision Discovery Response from " MACSTR 1343 " with config methods 0x%x", 1344 MAC2STR(sa), msg.wps_config_methods); 1345 1346 dev = p2p_get_device(p2p, sa); 1347 if (dev == NULL || !dev->req_config_methods) { 1348 p2p_dbg(p2p, "Ignore Provision Discovery Response from " MACSTR 1349 " with no pending request", MAC2STR(sa)); 1350 p2p_parse_free(&msg); 1351 return; 1352 } else if (msg.wfd_subelems) { 1353 wpabuf_free(dev->info.wfd_subelems); 1354 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); 1355 } 1356 1357 if (dev->dialog_token != msg.dialog_token) { 1358 p2p_dbg(p2p, "Ignore Provision Discovery Response with unexpected Dialog Token %u (expected %u)", 1359 msg.dialog_token, dev->dialog_token); 1360 p2p_parse_free(&msg); 1361 return; 1362 } 1363 1364 if (p2p->pending_action_state == P2P_PENDING_PD) { 1365 os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); 1366 p2p->pending_action_state = P2P_NO_PENDING_ACTION; 1367 } 1368 1369 p2ps_seeker = p2p->p2ps_prov && p2p->p2ps_prov->pd_seeker; 1370 1371 /* 1372 * Use a local copy of the requested config methods since 1373 * p2p_reset_pending_pd() can clear this in the peer entry. 1374 */ 1375 req_config_methods = dev->req_config_methods; 1376 1377 /* 1378 * If the response is from the peer to whom a user initiated request 1379 * was sent earlier, we reset that state info here. 1380 */ 1381 if (p2p->user_initiated_pd && 1382 os_memcmp(p2p->pending_pd_devaddr, sa, ETH_ALEN) == 0) 1383 p2p_reset_pending_pd(p2p); 1384 1385 if (msg.wps_config_methods != req_config_methods) { 1386 p2p_dbg(p2p, "Peer rejected our Provision Discovery Request (received config_methods 0x%x expected 0x%x", 1387 msg.wps_config_methods, req_config_methods); 1388 if (p2p->cfg->prov_disc_fail) 1389 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, 1390 P2P_PROV_DISC_REJECTED, 1391 adv_id, adv_mac, NULL); 1392 p2p_parse_free(&msg); 1393 p2ps_prov_free(p2p); 1394 goto out; 1395 } 1396 1397 report_config_methods = req_config_methods; 1398 dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | 1399 P2P_DEV_PD_PEER_KEYPAD | 1400 P2P_DEV_PD_PEER_P2PS); 1401 if (req_config_methods & WPS_CONFIG_DISPLAY) { 1402 p2p_dbg(p2p, "Peer " MACSTR 1403 " accepted to show a PIN on display", MAC2STR(sa)); 1404 dev->flags |= P2P_DEV_PD_PEER_DISPLAY; 1405 passwd_id = DEV_PW_REGISTRAR_SPECIFIED; 1406 } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { 1407 p2p_dbg(p2p, "Peer " MACSTR 1408 " accepted to write our PIN using keypad", 1409 MAC2STR(sa)); 1410 dev->flags |= P2P_DEV_PD_PEER_KEYPAD; 1411 passwd_id = DEV_PW_USER_SPECIFIED; 1412 } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { 1413 p2p_dbg(p2p, "Peer " MACSTR " accepted P2PS PIN", 1414 MAC2STR(sa)); 1415 dev->flags |= P2P_DEV_PD_PEER_P2PS; 1416 passwd_id = DEV_PW_P2PS_DEFAULT; 1417 } 1418 1419 if ((status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) && 1420 p2p->p2ps_prov) { 1421 dev->oper_freq = 0; 1422 1423 /* 1424 * Save the reported channel list and operating frequency. 1425 * Note that the specification mandates that the responder 1426 * should include in the channel list only channels reported by 1427 * the initiator, so this is only a sanity check, and if this 1428 * fails the flow would continue, although it would probably 1429 * fail. Same is true for the operating channel. 1430 */ 1431 if (msg.channel_list && msg.channel_list_len && 1432 p2p_peer_channels_check(p2p, &p2p->channels, dev, 1433 msg.channel_list, 1434 msg.channel_list_len) < 0) 1435 p2p_dbg(p2p, "P2PS PD Response - no common channels"); 1436 1437 if (msg.operating_channel) { 1438 if (p2p_channels_includes(&p2p->channels, 1439 msg.operating_channel[3], 1440 msg.operating_channel[4]) && 1441 p2p_channels_includes(&dev->channels, 1442 msg.operating_channel[3], 1443 msg.operating_channel[4])) { 1444 dev->oper_freq = 1445 p2p_channel_to_freq( 1446 msg.operating_channel[3], 1447 msg.operating_channel[4]); 1448 } else { 1449 p2p_dbg(p2p, 1450 "P2PS PD Response - invalid operating channel"); 1451 } 1452 } 1453 1454 if (p2p->cfg->p2ps_prov_complete) { 1455 int freq = 0; 1456 1457 if (conncap == P2PS_SETUP_GROUP_OWNER) { 1458 u8 tmp; 1459 1460 /* 1461 * Re-select the operating channel as it is 1462 * possible that original channel is no longer 1463 * valid. This should not really fail. 1464 */ 1465 if (p2p_go_select_channel(p2p, dev, &tmp) < 0) 1466 p2p_dbg(p2p, 1467 "P2PS PD channel selection failed"); 1468 1469 freq = p2p_channel_to_freq(p2p->op_reg_class, 1470 p2p->op_channel); 1471 if (freq < 0) 1472 freq = 0; 1473 } 1474 1475 p2p->cfg->p2ps_prov_complete( 1476 p2p->cfg->cb_ctx, status, sa, adv_mac, 1477 p2p->p2ps_prov->session_mac, 1478 group_mac, adv_id, p2p->p2ps_prov->session_id, 1479 conncap, passwd_id, msg.persistent_ssid, 1480 msg.persistent_ssid_len, 1, 0, NULL, 1481 msg.feature_cap, msg.feature_cap_len, freq, 1482 msg.group_id ? msg.group_id + ETH_ALEN : NULL, 1483 msg.group_id ? msg.group_id_len - ETH_ALEN : 0); 1484 } 1485 p2ps_prov_free(p2p); 1486 } else if (status != P2P_SC_SUCCESS && 1487 status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1488 status != P2P_SC_SUCCESS_DEFERRED && p2p->p2ps_prov) { 1489 if (p2p->cfg->p2ps_prov_complete) 1490 p2p->cfg->p2ps_prov_complete( 1491 p2p->cfg->cb_ctx, status, sa, adv_mac, 1492 p2p->p2ps_prov->session_mac, 1493 group_mac, adv_id, p2p->p2ps_prov->session_id, 1494 0, 0, NULL, 0, 1, 0, NULL, NULL, 0, 0, NULL, 0); 1495 p2ps_prov_free(p2p); 1496 } 1497 1498 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 1499 if (p2p->cfg->remove_stale_groups) { 1500 p2p->cfg->remove_stale_groups(p2p->cfg->cb_ctx, 1501 dev->info.p2p_device_addr, 1502 NULL, NULL, 0); 1503 } 1504 1505 if (msg.session_info && msg.session_info_len) { 1506 size_t info_len = msg.session_info_len; 1507 char *deferred_sess_resp = os_malloc(2 * info_len + 1); 1508 1509 if (!deferred_sess_resp) { 1510 p2p_parse_free(&msg); 1511 p2ps_prov_free(p2p); 1512 goto out; 1513 } 1514 utf8_escape((char *) msg.session_info, info_len, 1515 deferred_sess_resp, 2 * info_len + 1); 1516 1517 if (p2p->cfg->prov_disc_fail) 1518 p2p->cfg->prov_disc_fail( 1519 p2p->cfg->cb_ctx, sa, 1520 P2P_PROV_DISC_INFO_UNAVAILABLE, 1521 adv_id, adv_mac, 1522 deferred_sess_resp); 1523 os_free(deferred_sess_resp); 1524 } else 1525 if (p2p->cfg->prov_disc_fail) 1526 p2p->cfg->prov_disc_fail( 1527 p2p->cfg->cb_ctx, sa, 1528 P2P_PROV_DISC_INFO_UNAVAILABLE, 1529 adv_id, adv_mac, NULL); 1530 } else if (status != P2P_SC_SUCCESS) { 1531 p2p_dbg(p2p, "Peer rejected our Provision Discovery Request"); 1532 if (p2p->cfg->prov_disc_fail) 1533 p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, 1534 P2P_PROV_DISC_REJECTED, 1535 adv_id, adv_mac, NULL); 1536 p2p_parse_free(&msg); 1537 p2ps_prov_free(p2p); 1538 goto out; 1539 } 1540 1541 /* Store the provisioning info */ 1542 dev->wps_prov_info = msg.wps_config_methods; 1543 if (msg.intended_addr) 1544 os_memcpy(dev->interface_addr, msg.intended_addr, ETH_ALEN); 1545 1546 p2p_parse_free(&msg); 1547 1548 out: 1549 dev->req_config_methods = 0; 1550 p2p->cfg->send_action_done(p2p->cfg->cb_ctx); 1551 if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { 1552 p2p_dbg(p2p, "Start GO Neg after the PD-before-GO-Neg workaround with " 1553 MACSTR, MAC2STR(dev->info.p2p_device_addr)); 1554 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; 1555 p2p_connect_send(p2p, dev); 1556 return; 1557 } 1558 1559 /* 1560 * prov_disc_resp callback is used to generate P2P-PROV-DISC-ENTER-PIN, 1561 * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. 1562 * Call it only for a legacy P2P PD or for P2PS PD scenarios where 1563 * show/enter PIN events are needed. 1564 * 1565 * The callback is called in the following cases: 1566 * 1. Legacy P2P PD response with a status SUCCESS 1567 * 2. P2PS, advertiser method: DISPLAY, autoaccept: true, 1568 * response status: SUCCESS, local method KEYPAD 1569 * 3. P2PS, advertiser method: KEYPAD,Seeker side, 1570 * response status: INFO_CURRENTLY_UNAVAILABLE, 1571 * local method: DISPLAY 1572 */ 1573 if (p2p->cfg->prov_disc_resp && 1574 ((status == P2P_SC_SUCCESS && !adv_id) || 1575 (p2ps_seeker && status == P2P_SC_SUCCESS && 1576 passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || 1577 (p2ps_seeker && 1578 status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && 1579 passwd_id == DEV_PW_USER_SPECIFIED))) 1580 p2p->cfg->prov_disc_resp(p2p->cfg->cb_ctx, sa, 1581 report_config_methods); 1582 1583 if (p2p->state == P2P_PD_DURING_FIND) { 1584 p2p_clear_timeout(p2p); 1585 p2p_continue_find(p2p); 1586 } 1587 } 1588 1589 1590 int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev, 1591 int join, int force_freq) 1592 { 1593 struct wpabuf *req; 1594 int freq; 1595 1596 if (force_freq > 0) 1597 freq = force_freq; 1598 else 1599 freq = dev->listen_freq > 0 ? dev->listen_freq : 1600 dev->oper_freq; 1601 if (freq <= 0) { 1602 p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " 1603 MACSTR " to send Provision Discovery Request", 1604 MAC2STR(dev->info.p2p_device_addr)); 1605 return -1; 1606 } 1607 1608 if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { 1609 if (!(dev->info.dev_capab & 1610 P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { 1611 p2p_dbg(p2p, "Cannot use PD with P2P Device " MACSTR 1612 " that is in a group and is not discoverable", 1613 MAC2STR(dev->info.p2p_device_addr)); 1614 return -1; 1615 } 1616 /* TODO: use device discoverability request through GO */ 1617 } 1618 1619 if (p2p->p2ps_prov) { 1620 if (p2p->p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED) { 1621 if (p2p->p2ps_prov->method == WPS_CONFIG_DISPLAY) 1622 dev->req_config_methods = WPS_CONFIG_KEYPAD; 1623 else if (p2p->p2ps_prov->method == WPS_CONFIG_KEYPAD) 1624 dev->req_config_methods = WPS_CONFIG_DISPLAY; 1625 else 1626 dev->req_config_methods = WPS_CONFIG_P2PS; 1627 } else { 1628 /* Order of preference, based on peer's capabilities */ 1629 if (p2p->p2ps_prov->method) 1630 dev->req_config_methods = 1631 p2p->p2ps_prov->method; 1632 else if (dev->info.config_methods & WPS_CONFIG_P2PS) 1633 dev->req_config_methods = WPS_CONFIG_P2PS; 1634 else if (dev->info.config_methods & WPS_CONFIG_DISPLAY) 1635 dev->req_config_methods = WPS_CONFIG_DISPLAY; 1636 else 1637 dev->req_config_methods = WPS_CONFIG_KEYPAD; 1638 } 1639 p2p_dbg(p2p, 1640 "Building PD Request based on P2PS config method 0x%x status %d --> req_config_methods 0x%x", 1641 p2p->p2ps_prov->method, p2p->p2ps_prov->status, 1642 dev->req_config_methods); 1643 1644 if (p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, 1645 p2p->p2ps_prov->pref_freq, 1) < 0) 1646 return -1; 1647 } 1648 1649 req = p2p_build_prov_disc_req(p2p, dev, join); 1650 if (req == NULL) 1651 return -1; 1652 1653 if (p2p->state != P2P_IDLE) 1654 p2p_stop_listen_for_freq(p2p, freq); 1655 p2p->pending_action_state = P2P_PENDING_PD; 1656 if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, 1657 p2p->cfg->dev_addr, dev->info.p2p_device_addr, 1658 wpabuf_head(req), wpabuf_len(req), 200) < 0) { 1659 p2p_dbg(p2p, "Failed to send Action frame"); 1660 wpabuf_free(req); 1661 return -1; 1662 } 1663 1664 os_memcpy(p2p->pending_pd_devaddr, dev->info.p2p_device_addr, ETH_ALEN); 1665 1666 wpabuf_free(req); 1667 return 0; 1668 } 1669 1670 1671 int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, 1672 struct p2ps_provision *p2ps_prov, 1673 u16 config_methods, int join, int force_freq, 1674 int user_initiated_pd) 1675 { 1676 struct p2p_device *dev; 1677 1678 dev = p2p_get_device(p2p, peer_addr); 1679 if (dev == NULL) 1680 dev = p2p_get_device_interface(p2p, peer_addr); 1681 if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { 1682 p2p_dbg(p2p, "Provision Discovery Request destination " MACSTR 1683 " not yet known", MAC2STR(peer_addr)); 1684 os_free(p2ps_prov); 1685 return -1; 1686 } 1687 1688 p2p_dbg(p2p, "Provision Discovery Request with " MACSTR 1689 " (config methods 0x%x)", 1690 MAC2STR(peer_addr), config_methods); 1691 if (config_methods == 0 && !p2ps_prov) { 1692 os_free(p2ps_prov); 1693 return -1; 1694 } 1695 1696 if (p2ps_prov && p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED && 1697 p2p->p2ps_prov) { 1698 /* Use cached method from deferred provisioning */ 1699 p2ps_prov->method = p2p->p2ps_prov->method; 1700 } 1701 1702 /* Reset provisioning info */ 1703 dev->wps_prov_info = 0; 1704 p2ps_prov_free(p2p); 1705 p2p->p2ps_prov = p2ps_prov; 1706 1707 dev->req_config_methods = config_methods; 1708 if (join) 1709 dev->flags |= P2P_DEV_PD_FOR_JOIN; 1710 else 1711 dev->flags &= ~P2P_DEV_PD_FOR_JOIN; 1712 1713 if (p2p->state != P2P_IDLE && p2p->state != P2P_SEARCH && 1714 p2p->state != P2P_LISTEN_ONLY) { 1715 p2p_dbg(p2p, "Busy with other operations; postpone Provision Discovery Request with " 1716 MACSTR " (config methods 0x%x)", 1717 MAC2STR(peer_addr), config_methods); 1718 return 0; 1719 } 1720 1721 p2p->user_initiated_pd = user_initiated_pd; 1722 p2p->pd_force_freq = force_freq; 1723 1724 if (p2p->user_initiated_pd) 1725 p2p->pd_retries = MAX_PROV_DISC_REQ_RETRIES; 1726 1727 /* 1728 * Assign dialog token here to use the same value in each retry within 1729 * the same PD exchange. 1730 */ 1731 dev->dialog_token++; 1732 if (dev->dialog_token == 0) 1733 dev->dialog_token = 1; 1734 1735 return p2p_send_prov_disc_req(p2p, dev, join, force_freq); 1736 } 1737 1738 1739 void p2p_reset_pending_pd(struct p2p_data *p2p) 1740 { 1741 struct p2p_device *dev; 1742 1743 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { 1744 if (os_memcmp(p2p->pending_pd_devaddr, 1745 dev->info.p2p_device_addr, ETH_ALEN)) 1746 continue; 1747 if (!dev->req_config_methods) 1748 continue; 1749 if (dev->flags & P2P_DEV_PD_FOR_JOIN) 1750 continue; 1751 /* Reset the config methods of the device */ 1752 dev->req_config_methods = 0; 1753 } 1754 1755 p2p->user_initiated_pd = 0; 1756 os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); 1757 p2p->pd_retries = 0; 1758 p2p->pd_force_freq = 0; 1759 } 1760 1761 1762 void p2ps_prov_free(struct p2p_data *p2p) 1763 { 1764 os_free(p2p->p2ps_prov); 1765 p2p->p2ps_prov = NULL; 1766 } 1767
