1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/ieee802_11_common.h" 14 #include "common/ieee802_11_defs.h" 15 #include "common/wpa_ctrl.h" 16 #include "wps/wps_i.h" 17 #include "p2p/p2p.h" 18 #include "ap/hostapd.h" 19 #include "ap/ap_config.h" 20 #include "ap/p2p_hostapd.h" 21 #include "eapol_supp/eapol_supp_sm.h" 22 #include "rsn_supp/wpa.h" 23 #include "wpa_supplicant_i.h" 24 #include "driver_i.h" 25 #include "ap.h" 26 #include "config_ssid.h" 27 #include "config.h" 28 #include "notify.h" 29 #include "scan.h" 30 #include "bss.h" 31 #include "offchannel.h" 32 #include "wps_supplicant.h" 33 #include "p2p_supplicant.h" 34 35 36 /* 37 * How many times to try to scan to find the GO before giving up on join 38 * request. 39 */ 40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 41 42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5 43 44 #ifndef P2P_MAX_CLIENT_IDLE 45 /* 46 * How many seconds to try to reconnect to the GO when connection in P2P client 47 * role has been lost. 48 */ 49 #define P2P_MAX_CLIENT_IDLE 10 50 #endif /* P2P_MAX_CLIENT_IDLE */ 51 52 #ifndef P2P_MAX_INITIAL_CONN_WAIT 53 /* 54 * How many seconds to wait for initial 4-way handshake to get completed after 55 * WPS provisioning step. 56 */ 57 #define P2P_MAX_INITIAL_CONN_WAIT 10 58 #endif /* P2P_MAX_INITIAL_CONN_WAIT */ 59 60 #ifndef P2P_CONCURRENT_SEARCH_DELAY 61 #define P2P_CONCURRENT_SEARCH_DELAY 500 62 #endif /* P2P_CONCURRENT_SEARCH_DELAY */ 63 64 enum p2p_group_removal_reason { 65 P2P_GROUP_REMOVAL_UNKNOWN, 66 P2P_GROUP_REMOVAL_SILENT, 67 P2P_GROUP_REMOVAL_FORMATION_FAILED, 68 P2P_GROUP_REMOVAL_REQUESTED, 69 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 70 P2P_GROUP_REMOVAL_UNAVAILABLE, 71 P2P_GROUP_REMOVAL_GO_ENDING_SESSION 72 }; 73 74 75 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 76 static struct wpa_supplicant * 77 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 78 int go); 79 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s); 80 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq); 81 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 82 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 83 const u8 *dev_addr, enum p2p_wps_method wps_method, 84 int auto_join); 85 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 86 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 87 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 88 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 89 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 90 int group_added); 91 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 92 93 94 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 95 struct wpa_scan_results *scan_res) 96 { 97 size_t i; 98 99 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 100 return; 101 102 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 103 (int) scan_res->num); 104 105 for (i = 0; i < scan_res->num; i++) { 106 struct wpa_scan_res *bss = scan_res->res[i]; 107 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 108 bss->freq, bss->age, bss->level, 109 (const u8 *) (bss + 1), 110 bss->ie_len) > 0) 111 break; 112 } 113 114 p2p_scan_res_handled(wpa_s->global->p2p); 115 } 116 117 118 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 119 unsigned int num_req_dev_types, 120 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 121 { 122 struct wpa_supplicant *wpa_s = ctx; 123 struct wpa_supplicant *ifs; 124 struct wpa_driver_scan_params params; 125 int ret; 126 struct wpabuf *wps_ie, *ies; 127 int social_channels[] = { 2412, 2437, 2462, 0, 0 }; 128 size_t ielen; 129 130 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 131 return -1; 132 133 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 134 if (ifs->sta_scan_pending && 135 wpas_p2p_in_progress(wpa_s) == 2) { 136 wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow " 137 "pending station mode scan to be " 138 "completed on interface %s", ifs->ifname); 139 wpa_s->global->p2p_cb_on_scan_complete = 1; 140 wpa_supplicant_req_scan(ifs, 0, 0); 141 return 1; 142 } 143 } 144 145 os_memset(¶ms, 0, sizeof(params)); 146 147 /* P2P Wildcard SSID */ 148 params.num_ssids = 1; 149 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 150 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 151 152 wpa_s->wps->dev.p2p = 1; 153 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 154 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 155 num_req_dev_types, req_dev_types); 156 if (wps_ie == NULL) 157 return -1; 158 159 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 160 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 161 if (ies == NULL) { 162 wpabuf_free(wps_ie); 163 return -1; 164 } 165 wpabuf_put_buf(ies, wps_ie); 166 wpabuf_free(wps_ie); 167 168 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 169 170 params.p2p_probe = 1; 171 params.extra_ies = wpabuf_head(ies); 172 params.extra_ies_len = wpabuf_len(ies); 173 174 switch (type) { 175 case P2P_SCAN_SOCIAL: 176 params.freqs = social_channels; 177 break; 178 case P2P_SCAN_FULL: 179 break; 180 case P2P_SCAN_SOCIAL_PLUS_ONE: 181 social_channels[3] = freq; 182 params.freqs = social_channels; 183 break; 184 } 185 186 ret = wpa_drv_scan(wpa_s, ¶ms); 187 188 wpabuf_free(ies); 189 190 if (ret) { 191 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 192 if (ifs->scanning || 193 ifs->scan_res_handler == wpas_p2p_scan_res_handler) { 194 wpa_s->global->p2p_cb_on_scan_complete = 1; 195 ret = 1; 196 break; 197 } 198 } 199 } else 200 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 201 202 return ret; 203 } 204 205 206 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 207 { 208 switch (p2p_group_interface) { 209 case P2P_GROUP_INTERFACE_PENDING: 210 return WPA_IF_P2P_GROUP; 211 case P2P_GROUP_INTERFACE_GO: 212 return WPA_IF_P2P_GO; 213 case P2P_GROUP_INTERFACE_CLIENT: 214 return WPA_IF_P2P_CLIENT; 215 } 216 217 return WPA_IF_P2P_GROUP; 218 } 219 220 221 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 222 const u8 *ssid, 223 size_t ssid_len, int *go) 224 { 225 struct wpa_ssid *s; 226 227 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 228 for (s = wpa_s->conf->ssid; s; s = s->next) { 229 if (s->disabled != 0 || !s->p2p_group || 230 s->ssid_len != ssid_len || 231 os_memcmp(ssid, s->ssid, ssid_len) != 0) 232 continue; 233 if (s->mode == WPAS_MODE_P2P_GO && 234 s != wpa_s->current_ssid) 235 continue; 236 if (go) 237 *go = s->mode == WPAS_MODE_P2P_GO; 238 return wpa_s; 239 } 240 } 241 242 return NULL; 243 } 244 245 246 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 247 enum p2p_group_removal_reason removal_reason) 248 { 249 struct wpa_ssid *ssid; 250 char *gtype; 251 const char *reason; 252 253 ssid = wpa_s->current_ssid; 254 if (ssid == NULL) { 255 /* 256 * The current SSID was not known, but there may still be a 257 * pending P2P group interface waiting for provisioning or a 258 * P2P group that is trying to reconnect. 259 */ 260 ssid = wpa_s->conf->ssid; 261 while (ssid) { 262 if (ssid->p2p_group && ssid->disabled != 2) 263 break; 264 ssid = ssid->next; 265 } 266 if (ssid == NULL && 267 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 268 { 269 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 270 "not found"); 271 return -1; 272 } 273 } 274 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 275 gtype = "GO"; 276 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 277 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 278 wpa_s->reassociate = 0; 279 wpa_s->disconnected = 1; 280 wpa_supplicant_deauthenticate(wpa_s, 281 WLAN_REASON_DEAUTH_LEAVING); 282 gtype = "client"; 283 } else 284 gtype = "GO"; 285 if (wpa_s->cross_connect_in_use) { 286 wpa_s->cross_connect_in_use = 0; 287 wpa_msg(wpa_s->parent, MSG_INFO, 288 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 289 wpa_s->ifname, wpa_s->cross_connect_uplink); 290 } 291 switch (removal_reason) { 292 case P2P_GROUP_REMOVAL_REQUESTED: 293 reason = " reason=REQUESTED"; 294 break; 295 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 296 reason = " reason=FORMATION_FAILED"; 297 break; 298 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 299 reason = " reason=IDLE"; 300 break; 301 case P2P_GROUP_REMOVAL_UNAVAILABLE: 302 reason = " reason=UNAVAILABLE"; 303 break; 304 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 305 reason = " reason=GO_ENDING_SESSION"; 306 break; 307 default: 308 reason = ""; 309 break; 310 } 311 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 312 wpa_msg(wpa_s->parent, MSG_INFO, 313 P2P_EVENT_GROUP_REMOVED "%s %s%s", 314 wpa_s->ifname, gtype, reason); 315 } 316 317 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 318 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 319 320 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 321 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 322 323 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 324 struct wpa_global *global; 325 char *ifname; 326 enum wpa_driver_if_type type; 327 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 328 wpa_s->ifname); 329 global = wpa_s->global; 330 ifname = os_strdup(wpa_s->ifname); 331 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 332 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 333 wpa_s = global->ifaces; 334 if (wpa_s && ifname) 335 wpa_drv_if_remove(wpa_s, type, ifname); 336 os_free(ifname); 337 return 1; 338 } 339 340 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 341 if (ssid && (ssid->p2p_group || 342 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 343 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 344 int id = ssid->id; 345 if (ssid == wpa_s->current_ssid) { 346 wpa_sm_set_config(wpa_s->wpa, NULL); 347 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 348 wpa_s->current_ssid = NULL; 349 } 350 /* 351 * Networks objects created during any P2P activities are not 352 * exposed out as they might/will confuse certain non-P2P aware 353 * applications since these network objects won't behave like 354 * regular ones. 355 * 356 * Likewise, we don't send out network removed signals for such 357 * network objects. 358 */ 359 wpa_config_remove_network(wpa_s->conf, id); 360 wpa_supplicant_clear_status(wpa_s); 361 wpa_supplicant_cancel_sched_scan(wpa_s); 362 wpa_s->sta_scan_pending = 0; 363 } else { 364 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 365 "found"); 366 } 367 if (wpa_s->ap_iface) 368 wpa_supplicant_ap_deinit(wpa_s); 369 else 370 wpa_drv_deinit_p2p_cli(wpa_s); 371 372 return 0; 373 } 374 375 376 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 377 u8 *go_dev_addr, 378 const u8 *ssid, size_t ssid_len) 379 { 380 struct wpa_bss *bss; 381 const u8 *bssid; 382 struct wpabuf *p2p; 383 u8 group_capab; 384 const u8 *addr; 385 386 if (wpa_s->go_params) 387 bssid = wpa_s->go_params->peer_interface_addr; 388 else 389 bssid = wpa_s->bssid; 390 391 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 392 if (bss == NULL) { 393 u8 iface_addr[ETH_ALEN]; 394 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 395 iface_addr) == 0) 396 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 397 } 398 if (bss == NULL) { 399 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 400 "group is persistent - BSS " MACSTR " not found", 401 MAC2STR(bssid)); 402 return 0; 403 } 404 405 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 406 if (p2p == NULL) { 407 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 408 "group is persistent - BSS " MACSTR 409 " did not include P2P IE", MAC2STR(bssid)); 410 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 411 (u8 *) (bss + 1), bss->ie_len); 412 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 413 ((u8 *) bss + 1) + bss->ie_len, 414 bss->beacon_ie_len); 415 return 0; 416 } 417 418 group_capab = p2p_get_group_capab(p2p); 419 addr = p2p_get_go_dev_addr(p2p); 420 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 421 "group_capab=0x%x", group_capab); 422 if (addr) { 423 os_memcpy(go_dev_addr, addr, ETH_ALEN); 424 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 425 MAC2STR(addr)); 426 } else 427 os_memset(go_dev_addr, 0, ETH_ALEN); 428 wpabuf_free(p2p); 429 430 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 431 "go_dev_addr=" MACSTR, 432 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 433 434 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 435 } 436 437 438 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 439 struct wpa_ssid *ssid, 440 const u8 *go_dev_addr) 441 { 442 struct wpa_ssid *s; 443 int changed = 0; 444 445 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 446 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 447 for (s = wpa_s->conf->ssid; s; s = s->next) { 448 if (s->disabled == 2 && 449 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 450 s->ssid_len == ssid->ssid_len && 451 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 452 break; 453 } 454 455 if (s) { 456 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 457 "entry"); 458 if (ssid->passphrase && !s->passphrase) 459 changed = 1; 460 else if (ssid->passphrase && s->passphrase && 461 os_strcmp(ssid->passphrase, s->passphrase) != 0) 462 changed = 1; 463 } else { 464 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 465 "entry"); 466 changed = 1; 467 s = wpa_config_add_network(wpa_s->conf); 468 if (s == NULL) 469 return -1; 470 471 /* 472 * Instead of network_added we emit persistent_group_added 473 * notification. Also to keep the defense checks in 474 * persistent_group obj registration method, we set the 475 * relevant flags in s to designate it as a persistent group. 476 */ 477 s->p2p_group = 1; 478 s->p2p_persistent_group = 1; 479 wpas_notify_persistent_group_added(wpa_s, s); 480 wpa_config_set_network_defaults(s); 481 } 482 483 s->p2p_group = 1; 484 s->p2p_persistent_group = 1; 485 s->disabled = 2; 486 s->bssid_set = 1; 487 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 488 s->mode = ssid->mode; 489 s->auth_alg = WPA_AUTH_ALG_OPEN; 490 s->key_mgmt = WPA_KEY_MGMT_PSK; 491 s->proto = WPA_PROTO_RSN; 492 s->pairwise_cipher = WPA_CIPHER_CCMP; 493 s->export_keys = 1; 494 if (ssid->passphrase) { 495 os_free(s->passphrase); 496 s->passphrase = os_strdup(ssid->passphrase); 497 } 498 if (ssid->psk_set) { 499 s->psk_set = 1; 500 os_memcpy(s->psk, ssid->psk, 32); 501 } 502 if (s->passphrase && !s->psk_set) 503 wpa_config_update_psk(s); 504 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 505 os_free(s->ssid); 506 s->ssid = os_malloc(ssid->ssid_len); 507 } 508 if (s->ssid) { 509 s->ssid_len = ssid->ssid_len; 510 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 511 } 512 513 #ifndef CONFIG_NO_CONFIG_WRITE 514 if (changed && wpa_s->conf->update_config && 515 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 516 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 517 } 518 #endif /* CONFIG_NO_CONFIG_WRITE */ 519 520 return s->id; 521 } 522 523 524 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 525 const u8 *addr) 526 { 527 struct wpa_ssid *ssid, *s; 528 u8 *n; 529 size_t i; 530 int found = 0; 531 532 ssid = wpa_s->current_ssid; 533 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 534 !ssid->p2p_persistent_group) 535 return; 536 537 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 538 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 539 continue; 540 541 if (s->ssid_len == ssid->ssid_len && 542 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 543 break; 544 } 545 546 if (s == NULL) 547 return; 548 549 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 550 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 551 ETH_ALEN) != 0) 552 continue; 553 554 if (i == s->num_p2p_clients - 1) 555 return; /* already the most recent entry */ 556 557 /* move the entry to mark it most recent */ 558 os_memmove(s->p2p_client_list + i * ETH_ALEN, 559 s->p2p_client_list + (i + 1) * ETH_ALEN, 560 (s->num_p2p_clients - i - 1) * ETH_ALEN); 561 os_memcpy(s->p2p_client_list + 562 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN); 563 found = 1; 564 break; 565 } 566 567 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 568 n = os_realloc_array(s->p2p_client_list, 569 s->num_p2p_clients + 1, ETH_ALEN); 570 if (n == NULL) 571 return; 572 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 573 s->p2p_client_list = n; 574 s->num_p2p_clients++; 575 } else if (!found) { 576 /* Not enough room for an additional entry - drop the oldest 577 * entry */ 578 os_memmove(s->p2p_client_list, 579 s->p2p_client_list + ETH_ALEN, 580 (s->num_p2p_clients - 1) * ETH_ALEN); 581 os_memcpy(s->p2p_client_list + 582 (s->num_p2p_clients - 1) * ETH_ALEN, 583 addr, ETH_ALEN); 584 } 585 586 #ifndef CONFIG_NO_CONFIG_WRITE 587 if (wpa_s->parent->conf->update_config && 588 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 589 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 590 #endif /* CONFIG_NO_CONFIG_WRITE */ 591 } 592 593 594 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 595 int success) 596 { 597 struct wpa_ssid *ssid; 598 const char *ssid_txt; 599 int client; 600 int persistent; 601 u8 go_dev_addr[ETH_ALEN]; 602 int network_id = -1; 603 604 /* 605 * This callback is likely called for the main interface. Update wpa_s 606 * to use the group interface if a new interface was created for the 607 * group. 608 */ 609 if (wpa_s->global->p2p_group_formation) 610 wpa_s = wpa_s->global->p2p_group_formation; 611 wpa_s->global->p2p_group_formation = NULL; 612 wpa_s->p2p_in_provisioning = 0; 613 614 if (!success) { 615 wpa_msg(wpa_s->parent, MSG_INFO, 616 P2P_EVENT_GROUP_FORMATION_FAILURE); 617 wpas_p2p_group_delete(wpa_s, 618 P2P_GROUP_REMOVAL_FORMATION_FAILED); 619 return; 620 } 621 622 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); 623 624 ssid = wpa_s->current_ssid; 625 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 626 ssid->mode = WPAS_MODE_P2P_GO; 627 p2p_group_notif_formation_done(wpa_s->p2p_group); 628 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 629 } 630 631 persistent = 0; 632 if (ssid) { 633 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 634 client = ssid->mode == WPAS_MODE_INFRA; 635 if (ssid->mode == WPAS_MODE_P2P_GO) { 636 persistent = ssid->p2p_persistent_group; 637 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 638 ETH_ALEN); 639 } else 640 persistent = wpas_p2p_persistent_group(wpa_s, 641 go_dev_addr, 642 ssid->ssid, 643 ssid->ssid_len); 644 } else { 645 ssid_txt = ""; 646 client = wpa_s->p2p_group_interface == 647 P2P_GROUP_INTERFACE_CLIENT; 648 os_memset(go_dev_addr, 0, ETH_ALEN); 649 } 650 651 wpa_s->show_group_started = 0; 652 if (client) { 653 /* 654 * Indicate event only after successfully completed 4-way 655 * handshake, i.e., when the interface is ready for data 656 * packets. 657 */ 658 wpa_s->show_group_started = 1; 659 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 660 char psk[65]; 661 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 662 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 663 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR 664 "%s", 665 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 666 MAC2STR(go_dev_addr), 667 persistent ? " [PERSISTENT]" : ""); 668 wpas_p2p_cross_connect_setup(wpa_s); 669 wpas_p2p_set_group_idle_timeout(wpa_s); 670 } else { 671 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 672 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 673 "go_dev_addr=" MACSTR "%s", 674 wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, 675 ssid && ssid->passphrase ? ssid->passphrase : "", 676 MAC2STR(go_dev_addr), 677 persistent ? " [PERSISTENT]" : ""); 678 wpas_p2p_cross_connect_setup(wpa_s); 679 wpas_p2p_set_group_idle_timeout(wpa_s); 680 } 681 682 if (persistent) 683 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 684 ssid, go_dev_addr); 685 if (network_id < 0 && ssid) 686 network_id = ssid->id; 687 if (!client) 688 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 689 } 690 691 692 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 693 unsigned int freq, 694 const u8 *dst, const u8 *src, 695 const u8 *bssid, 696 const u8 *data, size_t data_len, 697 enum offchannel_send_action_result 698 result) 699 { 700 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 701 702 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 703 return; 704 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 705 return; 706 707 switch (result) { 708 case OFFCHANNEL_SEND_ACTION_SUCCESS: 709 res = P2P_SEND_ACTION_SUCCESS; 710 break; 711 case OFFCHANNEL_SEND_ACTION_NO_ACK: 712 res = P2P_SEND_ACTION_NO_ACK; 713 break; 714 case OFFCHANNEL_SEND_ACTION_FAILED: 715 res = P2P_SEND_ACTION_FAILED; 716 break; 717 } 718 719 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 720 721 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 722 wpa_s->pending_pd_before_join && 723 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 724 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 725 wpa_s->p2p_fallback_to_go_neg) { 726 wpa_s->pending_pd_before_join = 0; 727 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 728 "during p2p_connect-auto"); 729 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 730 return; 731 } 732 } 733 734 735 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 736 const u8 *src, const u8 *bssid, const u8 *buf, 737 size_t len, unsigned int wait_time) 738 { 739 struct wpa_supplicant *wpa_s = ctx; 740 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 741 wait_time, 742 wpas_p2p_send_action_tx_status, 1); 743 } 744 745 746 static void wpas_send_action_done(void *ctx) 747 { 748 struct wpa_supplicant *wpa_s = ctx; 749 offchannel_send_action_done(wpa_s); 750 } 751 752 753 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 754 struct p2p_go_neg_results *params) 755 { 756 if (wpa_s->go_params == NULL) { 757 wpa_s->go_params = os_malloc(sizeof(*params)); 758 if (wpa_s->go_params == NULL) 759 return -1; 760 } 761 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 762 return 0; 763 } 764 765 766 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 767 struct p2p_go_neg_results *res) 768 { 769 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, 770 MAC2STR(res->peer_interface_addr)); 771 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 772 res->ssid, res->ssid_len); 773 wpa_supplicant_ap_deinit(wpa_s); 774 wpas_copy_go_neg_results(wpa_s, res); 775 if (res->wps_method == WPS_PBC) 776 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 777 else { 778 u16 dev_pw_id = DEV_PW_DEFAULT; 779 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 780 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 781 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 782 wpa_s->p2p_pin, 1, dev_pw_id); 783 } 784 } 785 786 787 static void p2p_go_configured(void *ctx, void *data) 788 { 789 struct wpa_supplicant *wpa_s = ctx; 790 struct p2p_go_neg_results *params = data; 791 struct wpa_ssid *ssid; 792 int network_id = -1; 793 794 ssid = wpa_s->current_ssid; 795 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 796 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 797 if (wpa_s->global->p2p_group_formation == wpa_s) 798 wpa_s->global->p2p_group_formation = NULL; 799 if (os_strlen(params->passphrase) > 0) { 800 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 801 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 802 "go_dev_addr=" MACSTR "%s", wpa_s->ifname, 803 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 804 ssid->frequency, params->passphrase, 805 MAC2STR(wpa_s->global->p2p_dev_addr), 806 params->persistent_group ? " [PERSISTENT]" : 807 ""); 808 } else { 809 char psk[65]; 810 wpa_snprintf_hex(psk, sizeof(psk), params->psk, 811 sizeof(params->psk)); 812 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 813 "%s GO ssid=\"%s\" freq=%d psk=%s " 814 "go_dev_addr=" MACSTR "%s", wpa_s->ifname, 815 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 816 ssid->frequency, psk, 817 MAC2STR(wpa_s->global->p2p_dev_addr), 818 params->persistent_group ? " [PERSISTENT]" : 819 ""); 820 } 821 822 if (params->persistent_group) 823 network_id = wpas_p2p_store_persistent_group( 824 wpa_s->parent, ssid, 825 wpa_s->global->p2p_dev_addr); 826 if (network_id < 0) 827 network_id = ssid->id; 828 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 829 wpas_p2p_cross_connect_setup(wpa_s); 830 wpas_p2p_set_group_idle_timeout(wpa_s); 831 return; 832 } 833 834 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 835 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 836 params->peer_interface_addr)) { 837 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 838 "filtering"); 839 return; 840 } 841 if (params->wps_method == WPS_PBC) 842 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 843 params->peer_device_addr); 844 else if (wpa_s->p2p_pin[0]) 845 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 846 wpa_s->p2p_pin, NULL, 0, 0); 847 os_free(wpa_s->go_params); 848 wpa_s->go_params = NULL; 849 } 850 851 852 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 853 struct p2p_go_neg_results *params, 854 int group_formation) 855 { 856 struct wpa_ssid *ssid; 857 858 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 859 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 860 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 861 "results"); 862 return; 863 } 864 865 ssid = wpa_config_add_network(wpa_s->conf); 866 if (ssid == NULL) { 867 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 868 return; 869 } 870 871 wpa_s->show_group_started = 0; 872 873 wpa_config_set_network_defaults(ssid); 874 ssid->temporary = 1; 875 ssid->p2p_group = 1; 876 ssid->p2p_persistent_group = params->persistent_group; 877 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 878 WPAS_MODE_P2P_GO; 879 ssid->frequency = params->freq; 880 ssid->ht40 = params->ht40; 881 ssid->ssid = os_zalloc(params->ssid_len + 1); 882 if (ssid->ssid) { 883 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 884 ssid->ssid_len = params->ssid_len; 885 } 886 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 887 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 888 ssid->proto = WPA_PROTO_RSN; 889 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 890 if (os_strlen(params->passphrase) > 0) { 891 ssid->passphrase = os_strdup(params->passphrase); 892 if (ssid->passphrase == NULL) { 893 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy " 894 "passphrase for GO"); 895 wpa_config_remove_network(wpa_s->conf, ssid->id); 896 return; 897 } 898 } else 899 ssid->passphrase = NULL; 900 ssid->psk_set = params->psk_set; 901 if (ssid->psk_set) 902 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 903 else if (ssid->passphrase) 904 wpa_config_update_psk(ssid); 905 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 906 907 wpa_s->ap_configured_cb = p2p_go_configured; 908 wpa_s->ap_configured_cb_ctx = wpa_s; 909 wpa_s->ap_configured_cb_data = wpa_s->go_params; 910 wpa_s->connect_without_scan = ssid; 911 wpa_s->reassociate = 1; 912 wpa_s->disconnected = 0; 913 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 914 "start GO)"); 915 wpa_supplicant_req_scan(wpa_s, 0, 0); 916 } 917 918 919 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 920 const struct wpa_supplicant *src) 921 { 922 struct wpa_config *d; 923 const struct wpa_config *s; 924 925 d = dst->conf; 926 s = src->conf; 927 928 #define C(n) if (s->n) d->n = os_strdup(s->n) 929 C(device_name); 930 C(manufacturer); 931 C(model_name); 932 C(model_number); 933 C(serial_number); 934 C(config_methods); 935 #undef C 936 937 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 938 os_memcpy(d->sec_device_type, s->sec_device_type, 939 sizeof(d->sec_device_type)); 940 d->num_sec_device_types = s->num_sec_device_types; 941 942 d->p2p_group_idle = s->p2p_group_idle; 943 d->p2p_intra_bss = s->p2p_intra_bss; 944 d->persistent_reconnect = s->persistent_reconnect; 945 d->max_num_sta = s->max_num_sta; 946 d->pbc_in_m1 = s->pbc_in_m1; 947 } 948 949 950 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 951 enum wpa_driver_if_type type) 952 { 953 char ifname[120], force_ifname[120]; 954 955 if (wpa_s->pending_interface_name[0]) { 956 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 957 "- skip creation of a new one"); 958 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 959 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 960 "unknown?! ifname='%s'", 961 wpa_s->pending_interface_name); 962 return -1; 963 } 964 return 0; 965 } 966 967 os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, 968 wpa_s->p2p_group_idx); 969 if (os_strlen(ifname) >= IFNAMSIZ && 970 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 971 /* Try to avoid going over the IFNAMSIZ length limit */ 972 os_snprintf(ifname, sizeof(ifname), "p2p-%d", 973 wpa_s->p2p_group_idx); 974 } 975 force_ifname[0] = '\0'; 976 977 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 978 ifname); 979 wpa_s->p2p_group_idx++; 980 981 wpa_s->pending_interface_type = type; 982 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 983 wpa_s->pending_interface_addr, NULL) < 0) { 984 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 985 "interface"); 986 return -1; 987 } 988 989 if (force_ifname[0]) { 990 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 991 force_ifname); 992 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 993 sizeof(wpa_s->pending_interface_name)); 994 } else 995 os_strlcpy(wpa_s->pending_interface_name, ifname, 996 sizeof(wpa_s->pending_interface_name)); 997 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 998 MACSTR, wpa_s->pending_interface_name, 999 MAC2STR(wpa_s->pending_interface_addr)); 1000 1001 return 0; 1002 } 1003 1004 1005 static void wpas_p2p_remove_pending_group_interface( 1006 struct wpa_supplicant *wpa_s) 1007 { 1008 if (!wpa_s->pending_interface_name[0] || 1009 is_zero_ether_addr(wpa_s->pending_interface_addr)) 1010 return; /* No pending virtual interface */ 1011 1012 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 1013 wpa_s->pending_interface_name); 1014 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 1015 wpa_s->pending_interface_name); 1016 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1017 wpa_s->pending_interface_name[0] = '\0'; 1018 } 1019 1020 1021 static struct wpa_supplicant * 1022 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 1023 { 1024 struct wpa_interface iface; 1025 struct wpa_supplicant *group_wpa_s; 1026 1027 if (!wpa_s->pending_interface_name[0]) { 1028 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 1029 if (!wpas_p2p_create_iface(wpa_s)) 1030 return NULL; 1031 /* 1032 * Something has forced us to remove the pending interface; try 1033 * to create a new one and hope for the best that we will get 1034 * the same local address. 1035 */ 1036 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 1037 WPA_IF_P2P_CLIENT) < 0) 1038 return NULL; 1039 } 1040 1041 os_memset(&iface, 0, sizeof(iface)); 1042 iface.ifname = wpa_s->pending_interface_name; 1043 iface.driver = wpa_s->driver->name; 1044 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 1045 iface.driver_param = wpa_s->conf->driver_param; 1046 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 1047 if (group_wpa_s == NULL) { 1048 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 1049 "wpa_supplicant interface"); 1050 return NULL; 1051 } 1052 wpa_s->pending_interface_name[0] = '\0'; 1053 group_wpa_s->parent = wpa_s; 1054 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 1055 P2P_GROUP_INTERFACE_CLIENT; 1056 wpa_s->global->p2p_group_formation = group_wpa_s; 1057 1058 wpas_p2p_clone_config(group_wpa_s, wpa_s); 1059 1060 return group_wpa_s; 1061 } 1062 1063 1064 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 1065 void *timeout_ctx) 1066 { 1067 struct wpa_supplicant *wpa_s = eloop_ctx; 1068 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 1069 if (wpa_s->global->p2p) 1070 p2p_group_formation_failed(wpa_s->global->p2p); 1071 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1072 wpa_drv_p2p_group_formation_failed(wpa_s); 1073 wpas_group_formation_completed(wpa_s, 0); 1074 } 1075 1076 1077 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 1078 { 1079 struct wpa_supplicant *wpa_s = ctx; 1080 1081 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1082 wpa_drv_cancel_remain_on_channel(wpa_s); 1083 wpa_s->off_channel_freq = 0; 1084 wpa_s->roc_waiting_drv_freq = 0; 1085 } 1086 1087 if (res->status) { 1088 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", 1089 res->status); 1090 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1091 wpas_p2p_remove_pending_group_interface(wpa_s); 1092 return; 1093 } 1094 1095 if (wpa_s->p2p_go_ht40) 1096 res->ht40 = 1; 1097 1098 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); 1099 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1100 1101 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 1102 struct wpa_ssid *ssid; 1103 ssid = wpa_config_get_network(wpa_s->conf, 1104 wpa_s->p2p_persistent_id); 1105 if (ssid && ssid->disabled == 2 && 1106 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 1107 size_t len = os_strlen(ssid->passphrase); 1108 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 1109 "on requested persistent group"); 1110 os_memcpy(res->passphrase, ssid->passphrase, len); 1111 res->passphrase[len] = '\0'; 1112 } 1113 } 1114 1115 if (wpa_s->create_p2p_iface) { 1116 struct wpa_supplicant *group_wpa_s = 1117 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1118 if (group_wpa_s == NULL) { 1119 wpas_p2p_remove_pending_group_interface(wpa_s); 1120 return; 1121 } 1122 if (group_wpa_s != wpa_s) { 1123 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1124 sizeof(group_wpa_s->p2p_pin)); 1125 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1126 } 1127 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1128 wpa_s->pending_interface_name[0] = '\0'; 1129 group_wpa_s->p2p_in_provisioning = 1; 1130 1131 if (res->role_go) 1132 wpas_start_wps_go(group_wpa_s, res, 1); 1133 else 1134 wpas_start_wps_enrollee(group_wpa_s, res); 1135 } else { 1136 wpa_s->p2p_in_provisioning = 1; 1137 wpa_s->global->p2p_group_formation = wpa_s; 1138 1139 if (res->role_go) 1140 wpas_start_wps_go(wpa_s, res, 1); 1141 else 1142 wpas_start_wps_enrollee(ctx, res); 1143 } 1144 1145 wpa_s->p2p_long_listen = 0; 1146 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1147 1148 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1149 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1150 (res->peer_config_timeout % 100) * 10000, 1151 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1152 } 1153 1154 1155 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1156 { 1157 struct wpa_supplicant *wpa_s = ctx; 1158 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1159 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1160 1161 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1162 } 1163 1164 1165 void wpas_dev_found(void *ctx, const u8 *addr, 1166 const struct p2p_peer_info *info, 1167 int new_device) 1168 { 1169 #ifndef CONFIG_NO_STDOUT_DEBUG 1170 struct wpa_supplicant *wpa_s = ctx; 1171 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1172 1173 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1174 " p2p_dev_addr=" MACSTR 1175 " pri_dev_type=%s name='%s' config_methods=0x%x " 1176 "dev_capab=0x%x group_capab=0x%x", 1177 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1178 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1179 sizeof(devtype)), 1180 info->device_name, info->config_methods, 1181 info->dev_capab, info->group_capab); 1182 #endif /* CONFIG_NO_STDOUT_DEBUG */ 1183 1184 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1185 } 1186 1187 1188 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1189 { 1190 struct wpa_supplicant *wpa_s = ctx; 1191 1192 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1193 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1194 1195 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1196 } 1197 1198 1199 static int wpas_start_listen(void *ctx, unsigned int freq, 1200 unsigned int duration, 1201 const struct wpabuf *probe_resp_ie) 1202 { 1203 struct wpa_supplicant *wpa_s = ctx; 1204 1205 wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); 1206 1207 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1208 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1209 "report received Probe Request frames"); 1210 return -1; 1211 } 1212 1213 wpa_s->pending_listen_freq = freq; 1214 wpa_s->pending_listen_duration = duration; 1215 1216 if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { 1217 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1218 "to remain on channel (%u MHz) for Listen " 1219 "state", freq); 1220 wpa_s->pending_listen_freq = 0; 1221 return -1; 1222 } 1223 wpa_s->off_channel_freq = 0; 1224 wpa_s->roc_waiting_drv_freq = freq; 1225 1226 return 0; 1227 } 1228 1229 1230 static void wpas_stop_listen(void *ctx) 1231 { 1232 struct wpa_supplicant *wpa_s = ctx; 1233 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1234 wpa_drv_cancel_remain_on_channel(wpa_s); 1235 wpa_s->off_channel_freq = 0; 1236 wpa_s->roc_waiting_drv_freq = 0; 1237 } 1238 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1239 wpa_drv_probe_req_report(wpa_s, 0); 1240 } 1241 1242 1243 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1244 { 1245 struct wpa_supplicant *wpa_s = ctx; 1246 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1247 } 1248 1249 1250 /* 1251 * DNS Header section is used only to calculate compression pointers, so the 1252 * contents of this data does not matter, but the length needs to be reserved 1253 * in the virtual packet. 1254 */ 1255 #define DNS_HEADER_LEN 12 1256 1257 /* 1258 * 27-octet in-memory packet from P2P specification containing two implied 1259 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN 1260 */ 1261 #define P2P_SD_IN_MEMORY_LEN 27 1262 1263 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start, 1264 u8 **spos, const u8 *end) 1265 { 1266 while (*spos < end) { 1267 u8 val = ((*spos)[0] & 0xc0) >> 6; 1268 int len; 1269 1270 if (val == 1 || val == 2) { 1271 /* These are reserved values in RFC 1035 */ 1272 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1273 "sequence starting with 0x%x", val); 1274 return -1; 1275 } 1276 1277 if (val == 3) { 1278 u16 offset; 1279 u8 *spos_tmp; 1280 1281 /* Offset */ 1282 if (*spos + 2 > end) { 1283 wpa_printf(MSG_DEBUG, "P2P: No room for full " 1284 "DNS offset field"); 1285 return -1; 1286 } 1287 1288 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1]; 1289 if (offset >= *spos - start) { 1290 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS " 1291 "pointer offset %u", offset); 1292 return -1; 1293 } 1294 1295 (*spos) += 2; 1296 spos_tmp = start + offset; 1297 return p2p_sd_dns_uncompress_label(upos, uend, start, 1298 &spos_tmp, 1299 *spos - 2); 1300 } 1301 1302 /* Label */ 1303 len = (*spos)[0] & 0x3f; 1304 if (len == 0) 1305 return 0; 1306 1307 (*spos)++; 1308 if (*spos + len > end) { 1309 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1310 "sequence - no room for label with length " 1311 "%u", len); 1312 return -1; 1313 } 1314 1315 if (*upos + len + 2 > uend) 1316 return -2; 1317 1318 os_memcpy(*upos, *spos, len); 1319 *spos += len; 1320 *upos += len; 1321 (*upos)[0] = '.'; 1322 (*upos)++; 1323 (*upos)[0] = '\0'; 1324 } 1325 1326 return 0; 1327 } 1328 1329 1330 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet. 1331 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is 1332 * not large enough */ 1333 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg, 1334 size_t msg_len, size_t offset) 1335 { 1336 /* 27-octet in-memory packet from P2P specification */ 1337 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01" 1338 "\x04_udp\xC0\x11\x00\x0C\x00\x01"; 1339 u8 *tmp, *end, *spos; 1340 char *upos, *uend; 1341 int ret = 0; 1342 1343 if (buf_len < 2) 1344 return -1; 1345 if (offset > msg_len) 1346 return -1; 1347 1348 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len); 1349 if (tmp == NULL) 1350 return -1; 1351 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN; 1352 end = spos + msg_len; 1353 spos += offset; 1354 1355 os_memset(tmp, 0, DNS_HEADER_LEN); 1356 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN); 1357 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len); 1358 1359 upos = buf; 1360 uend = buf + buf_len; 1361 1362 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end); 1363 if (ret) { 1364 os_free(tmp); 1365 return ret; 1366 } 1367 1368 if (upos == buf) { 1369 upos[0] = '.'; 1370 upos[1] = '\0'; 1371 } else if (upos[-1] == '.') 1372 upos[-1] = '\0'; 1373 1374 os_free(tmp); 1375 return 0; 1376 } 1377 1378 1379 static struct p2p_srv_bonjour * 1380 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1381 const struct wpabuf *query) 1382 { 1383 struct p2p_srv_bonjour *bsrv; 1384 size_t len; 1385 1386 len = wpabuf_len(query); 1387 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1388 struct p2p_srv_bonjour, list) { 1389 if (len == wpabuf_len(bsrv->query) && 1390 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1391 len) == 0) 1392 return bsrv; 1393 } 1394 return NULL; 1395 } 1396 1397 1398 static struct p2p_srv_upnp * 1399 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 1400 const char *service) 1401 { 1402 struct p2p_srv_upnp *usrv; 1403 1404 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1405 struct p2p_srv_upnp, list) { 1406 if (version == usrv->version && 1407 os_strcmp(service, usrv->service) == 0) 1408 return usrv; 1409 } 1410 return NULL; 1411 } 1412 1413 1414 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 1415 u8 srv_trans_id) 1416 { 1417 u8 *len_pos; 1418 1419 if (wpabuf_tailroom(resp) < 5) 1420 return; 1421 1422 /* Length (to be filled) */ 1423 len_pos = wpabuf_put(resp, 2); 1424 wpabuf_put_u8(resp, srv_proto); 1425 wpabuf_put_u8(resp, srv_trans_id); 1426 /* Status Code */ 1427 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 1428 /* Response Data: empty */ 1429 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1430 } 1431 1432 1433 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 1434 struct wpabuf *resp, u8 srv_trans_id) 1435 { 1436 struct p2p_srv_bonjour *bsrv; 1437 u8 *len_pos; 1438 1439 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 1440 1441 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1442 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1443 return; 1444 } 1445 1446 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1447 struct p2p_srv_bonjour, list) { 1448 if (wpabuf_tailroom(resp) < 1449 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 1450 return; 1451 /* Length (to be filled) */ 1452 len_pos = wpabuf_put(resp, 2); 1453 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1454 wpabuf_put_u8(resp, srv_trans_id); 1455 /* Status Code */ 1456 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1457 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1458 wpabuf_head(bsrv->resp), 1459 wpabuf_len(bsrv->resp)); 1460 /* Response Data */ 1461 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1462 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1463 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1464 2); 1465 } 1466 } 1467 1468 1469 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query, 1470 size_t query_len) 1471 { 1472 char str_rx[256], str_srv[256]; 1473 1474 if (query_len < 3 || wpabuf_len(bsrv->query) < 3) 1475 return 0; /* Too short to include DNS Type and Version */ 1476 if (os_memcmp(query + query_len - 3, 1477 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3, 1478 3) != 0) 1479 return 0; /* Mismatch in DNS Type or Version */ 1480 if (query_len == wpabuf_len(bsrv->query) && 1481 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0) 1482 return 1; /* Binary match */ 1483 1484 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3, 1485 0)) 1486 return 0; /* Failed to uncompress query */ 1487 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv), 1488 wpabuf_head(bsrv->query), 1489 wpabuf_len(bsrv->query) - 3, 0)) 1490 return 0; /* Failed to uncompress service */ 1491 1492 return os_strcmp(str_rx, str_srv) == 0; 1493 } 1494 1495 1496 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 1497 struct wpabuf *resp, u8 srv_trans_id, 1498 const u8 *query, size_t query_len) 1499 { 1500 struct p2p_srv_bonjour *bsrv; 1501 u8 *len_pos; 1502 int matches = 0; 1503 1504 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 1505 query, query_len); 1506 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1507 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1508 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 1509 srv_trans_id); 1510 return; 1511 } 1512 1513 if (query_len == 0) { 1514 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1515 return; 1516 } 1517 1518 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1519 struct p2p_srv_bonjour, list) { 1520 if (!match_bonjour_query(bsrv, query, query_len)) 1521 continue; 1522 1523 if (wpabuf_tailroom(resp) < 1524 5 + query_len + wpabuf_len(bsrv->resp)) 1525 return; 1526 1527 matches++; 1528 1529 /* Length (to be filled) */ 1530 len_pos = wpabuf_put(resp, 2); 1531 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1532 wpabuf_put_u8(resp, srv_trans_id); 1533 1534 /* Status Code */ 1535 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1536 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1537 wpabuf_head(bsrv->resp), 1538 wpabuf_len(bsrv->resp)); 1539 1540 /* Response Data */ 1541 wpabuf_put_data(resp, query, query_len); /* Key */ 1542 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1543 1544 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1545 } 1546 1547 if (matches == 0) { 1548 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 1549 "available"); 1550 if (wpabuf_tailroom(resp) < 5) 1551 return; 1552 1553 /* Length (to be filled) */ 1554 len_pos = wpabuf_put(resp, 2); 1555 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1556 wpabuf_put_u8(resp, srv_trans_id); 1557 1558 /* Status Code */ 1559 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1560 /* Response Data: empty */ 1561 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1562 2); 1563 } 1564 } 1565 1566 1567 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 1568 struct wpabuf *resp, u8 srv_trans_id) 1569 { 1570 struct p2p_srv_upnp *usrv; 1571 u8 *len_pos; 1572 1573 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 1574 1575 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1576 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1577 return; 1578 } 1579 1580 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1581 struct p2p_srv_upnp, list) { 1582 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 1583 return; 1584 1585 /* Length (to be filled) */ 1586 len_pos = wpabuf_put(resp, 2); 1587 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1588 wpabuf_put_u8(resp, srv_trans_id); 1589 1590 /* Status Code */ 1591 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1592 /* Response Data */ 1593 wpabuf_put_u8(resp, usrv->version); 1594 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1595 usrv->service); 1596 wpabuf_put_str(resp, usrv->service); 1597 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1598 2); 1599 } 1600 } 1601 1602 1603 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 1604 struct wpabuf *resp, u8 srv_trans_id, 1605 const u8 *query, size_t query_len) 1606 { 1607 struct p2p_srv_upnp *usrv; 1608 u8 *len_pos; 1609 u8 version; 1610 char *str; 1611 int count = 0; 1612 1613 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 1614 query, query_len); 1615 1616 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1617 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1618 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 1619 srv_trans_id); 1620 return; 1621 } 1622 1623 if (query_len == 0) { 1624 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1625 return; 1626 } 1627 1628 if (wpabuf_tailroom(resp) < 5) 1629 return; 1630 1631 /* Length (to be filled) */ 1632 len_pos = wpabuf_put(resp, 2); 1633 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1634 wpabuf_put_u8(resp, srv_trans_id); 1635 1636 version = query[0]; 1637 str = os_malloc(query_len); 1638 if (str == NULL) 1639 return; 1640 os_memcpy(str, query + 1, query_len - 1); 1641 str[query_len - 1] = '\0'; 1642 1643 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1644 struct p2p_srv_upnp, list) { 1645 if (version != usrv->version) 1646 continue; 1647 1648 if (os_strcmp(str, "ssdp:all") != 0 && 1649 os_strstr(usrv->service, str) == NULL) 1650 continue; 1651 1652 if (wpabuf_tailroom(resp) < 2) 1653 break; 1654 if (count == 0) { 1655 /* Status Code */ 1656 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1657 /* Response Data */ 1658 wpabuf_put_u8(resp, version); 1659 } else 1660 wpabuf_put_u8(resp, ','); 1661 1662 count++; 1663 1664 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1665 usrv->service); 1666 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 1667 break; 1668 wpabuf_put_str(resp, usrv->service); 1669 } 1670 os_free(str); 1671 1672 if (count == 0) { 1673 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 1674 "available"); 1675 /* Status Code */ 1676 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1677 /* Response Data: empty */ 1678 } 1679 1680 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1681 } 1682 1683 1684 #ifdef CONFIG_WIFI_DISPLAY 1685 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s, 1686 struct wpabuf *resp, u8 srv_trans_id, 1687 const u8 *query, size_t query_len) 1688 { 1689 const u8 *pos; 1690 u8 role; 1691 u8 *len_pos; 1692 1693 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len); 1694 1695 if (!wpa_s->global->wifi_display) { 1696 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available"); 1697 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY, 1698 srv_trans_id); 1699 return; 1700 } 1701 1702 if (query_len < 1) { 1703 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device " 1704 "Role"); 1705 return; 1706 } 1707 1708 if (wpabuf_tailroom(resp) < 5) 1709 return; 1710 1711 pos = query; 1712 role = *pos++; 1713 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role); 1714 1715 /* TODO: role specific handling */ 1716 1717 /* Length (to be filled) */ 1718 len_pos = wpabuf_put(resp, 2); 1719 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY); 1720 wpabuf_put_u8(resp, srv_trans_id); 1721 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */ 1722 1723 while (pos < query + query_len) { 1724 if (*pos < MAX_WFD_SUBELEMS && 1725 wpa_s->global->wfd_subelem[*pos] && 1726 wpabuf_tailroom(resp) >= 1727 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) { 1728 wpa_printf(MSG_DEBUG, "P2P: Add WSD response " 1729 "subelement %u", *pos); 1730 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]); 1731 } 1732 pos++; 1733 } 1734 1735 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1736 } 1737 #endif /* CONFIG_WIFI_DISPLAY */ 1738 1739 1740 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 1741 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 1742 { 1743 struct wpa_supplicant *wpa_s = ctx; 1744 const u8 *pos = tlvs; 1745 const u8 *end = tlvs + tlvs_len; 1746 const u8 *tlv_end; 1747 u16 slen; 1748 struct wpabuf *resp; 1749 u8 srv_proto, srv_trans_id; 1750 size_t buf_len; 1751 char *buf; 1752 1753 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 1754 tlvs, tlvs_len); 1755 buf_len = 2 * tlvs_len + 1; 1756 buf = os_malloc(buf_len); 1757 if (buf) { 1758 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1759 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 1760 MACSTR " %u %u %s", 1761 freq, MAC2STR(sa), dialog_token, update_indic, 1762 buf); 1763 os_free(buf); 1764 } 1765 1766 if (wpa_s->p2p_sd_over_ctrl_iface) { 1767 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1768 update_indic, tlvs, tlvs_len); 1769 return; /* to be processed by an external program */ 1770 } 1771 1772 resp = wpabuf_alloc(10000); 1773 if (resp == NULL) 1774 return; 1775 1776 while (pos + 1 < end) { 1777 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 1778 slen = WPA_GET_LE16(pos); 1779 pos += 2; 1780 if (pos + slen > end || slen < 2) { 1781 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 1782 "length"); 1783 wpabuf_free(resp); 1784 return; 1785 } 1786 tlv_end = pos + slen; 1787 1788 srv_proto = *pos++; 1789 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1790 srv_proto); 1791 srv_trans_id = *pos++; 1792 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1793 srv_trans_id); 1794 1795 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 1796 pos, tlv_end - pos); 1797 1798 1799 if (wpa_s->force_long_sd) { 1800 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 1801 "response"); 1802 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1803 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1804 goto done; 1805 } 1806 1807 switch (srv_proto) { 1808 case P2P_SERV_ALL_SERVICES: 1809 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 1810 "for all services"); 1811 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 1812 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1813 wpa_printf(MSG_DEBUG, "P2P: No service " 1814 "discovery protocols available"); 1815 wpas_sd_add_proto_not_avail( 1816 resp, P2P_SERV_ALL_SERVICES, 1817 srv_trans_id); 1818 break; 1819 } 1820 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1821 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1822 break; 1823 case P2P_SERV_BONJOUR: 1824 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 1825 pos, tlv_end - pos); 1826 break; 1827 case P2P_SERV_UPNP: 1828 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 1829 pos, tlv_end - pos); 1830 break; 1831 #ifdef CONFIG_WIFI_DISPLAY 1832 case P2P_SERV_WIFI_DISPLAY: 1833 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id, 1834 pos, tlv_end - pos); 1835 break; 1836 #endif /* CONFIG_WIFI_DISPLAY */ 1837 default: 1838 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 1839 "protocol %u", srv_proto); 1840 wpas_sd_add_proto_not_avail(resp, srv_proto, 1841 srv_trans_id); 1842 break; 1843 } 1844 1845 pos = tlv_end; 1846 } 1847 1848 done: 1849 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1850 update_indic, tlvs, tlvs_len); 1851 1852 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 1853 1854 wpabuf_free(resp); 1855 } 1856 1857 1858 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 1859 const u8 *tlvs, size_t tlvs_len) 1860 { 1861 struct wpa_supplicant *wpa_s = ctx; 1862 const u8 *pos = tlvs; 1863 const u8 *end = tlvs + tlvs_len; 1864 const u8 *tlv_end; 1865 u16 slen; 1866 size_t buf_len; 1867 char *buf; 1868 1869 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 1870 tlvs, tlvs_len); 1871 if (tlvs_len > 1500) { 1872 /* TODO: better way for handling this */ 1873 wpa_msg_ctrl(wpa_s, MSG_INFO, 1874 P2P_EVENT_SERV_DISC_RESP MACSTR 1875 " %u <long response: %u bytes>", 1876 MAC2STR(sa), update_indic, 1877 (unsigned int) tlvs_len); 1878 } else { 1879 buf_len = 2 * tlvs_len + 1; 1880 buf = os_malloc(buf_len); 1881 if (buf) { 1882 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1883 wpa_msg_ctrl(wpa_s, MSG_INFO, 1884 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 1885 MAC2STR(sa), update_indic, buf); 1886 os_free(buf); 1887 } 1888 } 1889 1890 while (pos < end) { 1891 u8 srv_proto, srv_trans_id, status; 1892 1893 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 1894 slen = WPA_GET_LE16(pos); 1895 pos += 2; 1896 if (pos + slen > end || slen < 3) { 1897 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 1898 "length"); 1899 return; 1900 } 1901 tlv_end = pos + slen; 1902 1903 srv_proto = *pos++; 1904 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1905 srv_proto); 1906 srv_trans_id = *pos++; 1907 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1908 srv_trans_id); 1909 status = *pos++; 1910 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 1911 status); 1912 1913 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 1914 pos, tlv_end - pos); 1915 1916 pos = tlv_end; 1917 } 1918 1919 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 1920 } 1921 1922 1923 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 1924 const struct wpabuf *tlvs) 1925 { 1926 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1927 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); 1928 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1929 return 0; 1930 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 1931 } 1932 1933 1934 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 1935 u8 version, const char *query) 1936 { 1937 struct wpabuf *tlvs; 1938 u64 ret; 1939 1940 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 1941 if (tlvs == NULL) 1942 return 0; 1943 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 1944 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 1945 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 1946 wpabuf_put_u8(tlvs, version); 1947 wpabuf_put_str(tlvs, query); 1948 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 1949 wpabuf_free(tlvs); 1950 return ret; 1951 } 1952 1953 1954 #ifdef CONFIG_WIFI_DISPLAY 1955 1956 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst, 1957 const struct wpabuf *tlvs) 1958 { 1959 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1960 return 0; 1961 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1962 return 0; 1963 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs); 1964 } 1965 1966 1967 #define MAX_WFD_SD_SUBELEMS 20 1968 1969 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role, 1970 const char *subelems) 1971 { 1972 u8 *len; 1973 const char *pos; 1974 int val; 1975 int count = 0; 1976 1977 len = wpabuf_put(tlvs, 2); 1978 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */ 1979 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */ 1980 1981 wpabuf_put_u8(tlvs, role); 1982 1983 pos = subelems; 1984 while (*pos) { 1985 val = atoi(pos); 1986 if (val >= 0 && val < 256) { 1987 wpabuf_put_u8(tlvs, val); 1988 count++; 1989 if (count == MAX_WFD_SD_SUBELEMS) 1990 break; 1991 } 1992 pos = os_strchr(pos + 1, ','); 1993 if (pos == NULL) 1994 break; 1995 pos++; 1996 } 1997 1998 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2); 1999 } 2000 2001 2002 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s, 2003 const u8 *dst, const char *role) 2004 { 2005 struct wpabuf *tlvs; 2006 u64 ret; 2007 const char *subelems; 2008 u8 id = 1; 2009 2010 subelems = os_strchr(role, ' '); 2011 if (subelems == NULL) 2012 return 0; 2013 subelems++; 2014 2015 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS)); 2016 if (tlvs == NULL) 2017 return 0; 2018 2019 if (os_strstr(role, "[source]")) 2020 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems); 2021 if (os_strstr(role, "[pri-sink]")) 2022 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems); 2023 if (os_strstr(role, "[sec-sink]")) 2024 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems); 2025 if (os_strstr(role, "[source+sink]")) 2026 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems); 2027 2028 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs); 2029 wpabuf_free(tlvs); 2030 return ret; 2031 } 2032 2033 #endif /* CONFIG_WIFI_DISPLAY */ 2034 2035 2036 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 2037 { 2038 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2039 return wpa_drv_p2p_sd_cancel_request(wpa_s, req); 2040 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2041 return -1; 2042 return p2p_sd_cancel_request(wpa_s->global->p2p, 2043 (void *) (uintptr_t) req); 2044 } 2045 2046 2047 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 2048 const u8 *dst, u8 dialog_token, 2049 const struct wpabuf *resp_tlvs) 2050 { 2051 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2052 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, 2053 resp_tlvs); 2054 return; 2055 } 2056 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2057 return; 2058 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 2059 resp_tlvs); 2060 } 2061 2062 2063 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 2064 { 2065 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2066 wpa_drv_p2p_service_update(wpa_s); 2067 return; 2068 } 2069 if (wpa_s->global->p2p) 2070 p2p_sd_service_update(wpa_s->global->p2p); 2071 } 2072 2073 2074 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 2075 { 2076 dl_list_del(&bsrv->list); 2077 wpabuf_free(bsrv->query); 2078 wpabuf_free(bsrv->resp); 2079 os_free(bsrv); 2080 } 2081 2082 2083 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 2084 { 2085 dl_list_del(&usrv->list); 2086 os_free(usrv->service); 2087 os_free(usrv); 2088 } 2089 2090 2091 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 2092 { 2093 struct p2p_srv_bonjour *bsrv, *bn; 2094 struct p2p_srv_upnp *usrv, *un; 2095 2096 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 2097 struct p2p_srv_bonjour, list) 2098 wpas_p2p_srv_bonjour_free(bsrv); 2099 2100 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 2101 struct p2p_srv_upnp, list) 2102 wpas_p2p_srv_upnp_free(usrv); 2103 2104 wpas_p2p_sd_service_update(wpa_s); 2105 } 2106 2107 2108 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 2109 struct wpabuf *query, struct wpabuf *resp) 2110 { 2111 struct p2p_srv_bonjour *bsrv; 2112 2113 bsrv = os_zalloc(sizeof(*bsrv)); 2114 if (bsrv == NULL) 2115 return -1; 2116 bsrv->query = query; 2117 bsrv->resp = resp; 2118 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 2119 2120 wpas_p2p_sd_service_update(wpa_s); 2121 return 0; 2122 } 2123 2124 2125 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 2126 const struct wpabuf *query) 2127 { 2128 struct p2p_srv_bonjour *bsrv; 2129 2130 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 2131 if (bsrv == NULL) 2132 return -1; 2133 wpas_p2p_srv_bonjour_free(bsrv); 2134 wpas_p2p_sd_service_update(wpa_s); 2135 return 0; 2136 } 2137 2138 2139 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 2140 const char *service) 2141 { 2142 struct p2p_srv_upnp *usrv; 2143 2144 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 2145 return 0; /* Already listed */ 2146 usrv = os_zalloc(sizeof(*usrv)); 2147 if (usrv == NULL) 2148 return -1; 2149 usrv->version = version; 2150 usrv->service = os_strdup(service); 2151 if (usrv->service == NULL) { 2152 os_free(usrv); 2153 return -1; 2154 } 2155 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 2156 2157 wpas_p2p_sd_service_update(wpa_s); 2158 return 0; 2159 } 2160 2161 2162 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 2163 const char *service) 2164 { 2165 struct p2p_srv_upnp *usrv; 2166 2167 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 2168 if (usrv == NULL) 2169 return -1; 2170 wpas_p2p_srv_upnp_free(usrv); 2171 wpas_p2p_sd_service_update(wpa_s); 2172 return 0; 2173 } 2174 2175 2176 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2177 const u8 *peer, const char *params, 2178 unsigned int generated_pin) 2179 { 2180 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", 2181 MAC2STR(peer), generated_pin, params); 2182 } 2183 2184 2185 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2186 const u8 *peer, const char *params) 2187 { 2188 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", 2189 MAC2STR(peer), params); 2190 } 2191 2192 2193 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2194 const u8 *dev_addr, const u8 *pri_dev_type, 2195 const char *dev_name, u16 supp_config_methods, 2196 u8 dev_capab, u8 group_capab, const u8 *group_id, 2197 size_t group_id_len) 2198 { 2199 struct wpa_supplicant *wpa_s = ctx; 2200 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2201 char params[300]; 2202 u8 empty_dev_type[8]; 2203 unsigned int generated_pin = 0; 2204 struct wpa_supplicant *group = NULL; 2205 2206 if (group_id) { 2207 for (group = wpa_s->global->ifaces; group; group = group->next) 2208 { 2209 struct wpa_ssid *s = group->current_ssid; 2210 if (s != NULL && 2211 s->mode == WPAS_MODE_P2P_GO && 2212 group_id_len - ETH_ALEN == s->ssid_len && 2213 os_memcmp(group_id + ETH_ALEN, s->ssid, 2214 s->ssid_len) == 0) 2215 break; 2216 } 2217 } 2218 2219 if (pri_dev_type == NULL) { 2220 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2221 pri_dev_type = empty_dev_type; 2222 } 2223 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2224 " pri_dev_type=%s name='%s' config_methods=0x%x " 2225 "dev_capab=0x%x group_capab=0x%x%s%s", 2226 MAC2STR(dev_addr), 2227 wps_dev_type_bin2str(pri_dev_type, devtype, 2228 sizeof(devtype)), 2229 dev_name, supp_config_methods, dev_capab, group_capab, 2230 group ? " group=" : "", 2231 group ? group->ifname : ""); 2232 params[sizeof(params) - 1] = '\0'; 2233 2234 if (config_methods & WPS_CONFIG_DISPLAY) { 2235 generated_pin = wps_generate_pin(); 2236 wpas_prov_disc_local_display(wpa_s, peer, params, 2237 generated_pin); 2238 } else if (config_methods & WPS_CONFIG_KEYPAD) 2239 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2240 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2241 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR 2242 "%s", MAC2STR(peer), params); 2243 2244 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2245 P2P_PROV_DISC_SUCCESS, 2246 config_methods, generated_pin); 2247 } 2248 2249 2250 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2251 { 2252 struct wpa_supplicant *wpa_s = ctx; 2253 unsigned int generated_pin = 0; 2254 char params[20]; 2255 2256 if (wpa_s->pending_pd_before_join && 2257 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2258 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2259 wpa_s->pending_pd_before_join = 0; 2260 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2261 "join-existing-group operation"); 2262 wpas_p2p_join_start(wpa_s); 2263 return; 2264 } 2265 2266 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2267 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) 2268 os_snprintf(params, sizeof(params), " peer_go=%d", 2269 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2270 else 2271 params[0] = '\0'; 2272 2273 if (config_methods & WPS_CONFIG_DISPLAY) 2274 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2275 else if (config_methods & WPS_CONFIG_KEYPAD) { 2276 generated_pin = wps_generate_pin(); 2277 wpas_prov_disc_local_display(wpa_s, peer, params, 2278 generated_pin); 2279 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2280 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR 2281 "%s", MAC2STR(peer), params); 2282 2283 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2284 P2P_PROV_DISC_SUCCESS, 2285 config_methods, generated_pin); 2286 } 2287 2288 2289 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2290 enum p2p_prov_disc_status status) 2291 { 2292 struct wpa_supplicant *wpa_s = ctx; 2293 2294 if (wpa_s->p2p_fallback_to_go_neg) { 2295 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2296 "failed - fall back to GO Negotiation"); 2297 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2298 return; 2299 } 2300 2301 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2302 wpa_s->pending_pd_before_join = 0; 2303 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2304 "join-existing-group operation (no ACK for PD " 2305 "Req attempts)"); 2306 wpas_p2p_join_start(wpa_s); 2307 return; 2308 } 2309 2310 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2311 " p2p_dev_addr=" MACSTR " status=%d", 2312 MAC2STR(peer), status); 2313 2314 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2315 status, 0, 0); 2316 } 2317 2318 2319 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2320 const u8 *go_dev_addr, const u8 *ssid, 2321 size_t ssid_len, int *go, u8 *group_bssid, 2322 int *force_freq, int persistent_group) 2323 { 2324 struct wpa_supplicant *wpa_s = ctx; 2325 struct wpa_ssid *s; 2326 u8 cur_bssid[ETH_ALEN]; 2327 int res; 2328 struct wpa_supplicant *grp; 2329 2330 if (!persistent_group) { 2331 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2332 " to join an active group", MAC2STR(sa)); 2333 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2334 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2335 == 0 || 2336 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2337 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2338 "authorized invitation"); 2339 goto accept_inv; 2340 } 2341 /* 2342 * Do not accept the invitation automatically; notify user and 2343 * request approval. 2344 */ 2345 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2346 } 2347 2348 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2349 if (grp) { 2350 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2351 "running persistent group"); 2352 if (*go) 2353 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2354 goto accept_inv; 2355 } 2356 2357 if (!wpa_s->conf->persistent_reconnect) 2358 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2359 2360 for (s = wpa_s->conf->ssid; s; s = s->next) { 2361 if (s->disabled == 2 && 2362 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2363 s->ssid_len == ssid_len && 2364 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2365 break; 2366 } 2367 2368 if (!s) { 2369 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2370 " requested reinvocation of an unknown group", 2371 MAC2STR(sa)); 2372 return P2P_SC_FAIL_UNKNOWN_GROUP; 2373 } 2374 2375 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2376 *go = 1; 2377 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2378 wpa_printf(MSG_DEBUG, "P2P: The only available " 2379 "interface is already in use - reject " 2380 "invitation"); 2381 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2382 } 2383 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2384 } else if (s->mode == WPAS_MODE_P2P_GO) { 2385 *go = 1; 2386 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2387 { 2388 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2389 "interface address for the group"); 2390 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2391 } 2392 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2393 ETH_ALEN); 2394 } 2395 2396 accept_inv: 2397 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && 2398 wpa_s->assoc_freq) { 2399 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2400 "the channel we are already using"); 2401 *force_freq = wpa_s->assoc_freq; 2402 } 2403 2404 res = wpa_drv_shared_freq(wpa_s); 2405 if (res > 0) { 2406 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2407 "with the channel we are already using on a " 2408 "shared interface"); 2409 *force_freq = res; 2410 } 2411 2412 return P2P_SC_SUCCESS; 2413 } 2414 2415 2416 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2417 const u8 *ssid, size_t ssid_len, 2418 const u8 *go_dev_addr, u8 status, 2419 int op_freq) 2420 { 2421 struct wpa_supplicant *wpa_s = ctx; 2422 struct wpa_ssid *s; 2423 2424 for (s = wpa_s->conf->ssid; s; s = s->next) { 2425 if (s->disabled == 2 && 2426 s->ssid_len == ssid_len && 2427 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2428 break; 2429 } 2430 2431 if (status == P2P_SC_SUCCESS) { 2432 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2433 " was accepted; op_freq=%d MHz", 2434 MAC2STR(sa), op_freq); 2435 if (s) { 2436 int go = s->mode == WPAS_MODE_P2P_GO; 2437 wpas_p2p_group_add_persistent( 2438 wpa_s, s, go, go ? op_freq : 0, 0); 2439 } else if (bssid) { 2440 wpa_s->user_initiated_pd = 0; 2441 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2442 wpa_s->p2p_wps_method, 0); 2443 } 2444 return; 2445 } 2446 2447 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2448 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2449 " was rejected (status %u)", MAC2STR(sa), status); 2450 return; 2451 } 2452 2453 if (!s) { 2454 if (bssid) { 2455 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2456 "sa=" MACSTR " go_dev_addr=" MACSTR 2457 " bssid=" MACSTR " unknown-network", 2458 MAC2STR(sa), MAC2STR(go_dev_addr), 2459 MAC2STR(bssid)); 2460 } else { 2461 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2462 "sa=" MACSTR " go_dev_addr=" MACSTR 2463 " unknown-network", 2464 MAC2STR(sa), MAC2STR(go_dev_addr)); 2465 } 2466 return; 2467 } 2468 2469 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR 2470 " persistent=%d", MAC2STR(sa), s->id); 2471 } 2472 2473 2474 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid) 2475 { 2476 struct wpa_supplicant *wpa_s = ctx; 2477 struct wpa_ssid *ssid; 2478 2479 if (bssid) { 2480 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2481 "status=%d " MACSTR, 2482 status, MAC2STR(bssid)); 2483 } else { 2484 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2485 "status=%d ", status); 2486 } 2487 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 2488 2489 if (wpa_s->pending_invite_ssid_id == -1) 2490 return; /* Invitation to active group */ 2491 2492 if (status != P2P_SC_SUCCESS) { 2493 wpas_p2p_remove_pending_group_interface(wpa_s); 2494 return; 2495 } 2496 2497 ssid = wpa_config_get_network(wpa_s->conf, 2498 wpa_s->pending_invite_ssid_id); 2499 if (ssid == NULL) { 2500 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 2501 "data matching with invitation"); 2502 return; 2503 } 2504 2505 /* 2506 * The peer could have missed our ctrl::ack frame for Invitation 2507 * Response and continue retransmitting the frame. To reduce the 2508 * likelihood of the peer not getting successful TX status for the 2509 * Invitation Response frame, wait a short time here before starting 2510 * the persistent group so that we will remain on the current channel to 2511 * acknowledge any possible retransmission from the peer. 2512 */ 2513 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 2514 "starting persistent group"); 2515 os_sleep(0, 50000); 2516 2517 wpas_p2p_group_add_persistent(wpa_s, ssid, 2518 ssid->mode == WPAS_MODE_P2P_GO, 2519 wpa_s->p2p_persistent_go_freq, 2520 wpa_s->p2p_go_ht40); 2521 } 2522 2523 2524 static int wpas_p2p_disallowed_freq(struct wpa_global *global, 2525 unsigned int freq) 2526 { 2527 unsigned int i; 2528 2529 if (global->p2p_disallow_freq == NULL) 2530 return 0; 2531 2532 for (i = 0; i < global->num_p2p_disallow_freq; i++) { 2533 if (freq >= global->p2p_disallow_freq[i].min && 2534 freq <= global->p2p_disallow_freq[i].max) 2535 return 1; 2536 } 2537 2538 return 0; 2539 } 2540 2541 2542 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 2543 { 2544 reg->channel[reg->channels] = chan; 2545 reg->channels++; 2546 } 2547 2548 2549 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 2550 struct p2p_channels *chan) 2551 { 2552 int i, cla = 0; 2553 2554 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 2555 "band"); 2556 2557 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 2558 chan->reg_class[cla].reg_class = 81; 2559 chan->reg_class[cla].channels = 0; 2560 for (i = 0; i < 11; i++) { 2561 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 2562 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 2563 } 2564 if (chan->reg_class[cla].channels) 2565 cla++; 2566 2567 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 2568 "band"); 2569 2570 /* Operating class 115 - 5 GHz, channels 36-48 */ 2571 chan->reg_class[cla].reg_class = 115; 2572 chan->reg_class[cla].channels = 0; 2573 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 2574 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 2575 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 2576 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 2577 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 2578 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 2579 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 2580 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 2581 if (chan->reg_class[cla].channels) 2582 cla++; 2583 2584 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 2585 "band"); 2586 2587 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 2588 chan->reg_class[cla].reg_class = 124; 2589 chan->reg_class[cla].channels = 0; 2590 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 2591 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 2592 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 2593 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 2594 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 2595 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 2596 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 2597 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 2598 if (chan->reg_class[cla].channels) 2599 cla++; 2600 2601 chan->reg_classes = cla; 2602 return 0; 2603 } 2604 2605 2606 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 2607 u16 num_modes, 2608 enum hostapd_hw_mode mode) 2609 { 2610 u16 i; 2611 2612 for (i = 0; i < num_modes; i++) { 2613 if (modes[i].mode == mode) 2614 return &modes[i]; 2615 } 2616 2617 return NULL; 2618 } 2619 2620 2621 static int has_channel(struct wpa_global *global, 2622 struct hostapd_hw_modes *mode, u8 chan, int *flags) 2623 { 2624 int i; 2625 unsigned int freq; 2626 2627 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 2628 chan * 5; 2629 if (wpas_p2p_disallowed_freq(global, freq)) 2630 return 0; 2631 2632 for (i = 0; i < mode->num_channels; i++) { 2633 if (mode->channels[i].chan == chan) { 2634 if (flags) 2635 *flags = mode->channels[i].flag; 2636 return !(mode->channels[i].flag & 2637 (HOSTAPD_CHAN_DISABLED | 2638 HOSTAPD_CHAN_PASSIVE_SCAN | 2639 HOSTAPD_CHAN_NO_IBSS | 2640 HOSTAPD_CHAN_RADAR)); 2641 } 2642 } 2643 2644 return 0; 2645 } 2646 2647 2648 struct p2p_oper_class_map { 2649 enum hostapd_hw_mode mode; 2650 u8 op_class; 2651 u8 min_chan; 2652 u8 max_chan; 2653 u8 inc; 2654 enum { BW20, BW40PLUS, BW40MINUS } bw; 2655 }; 2656 2657 static struct p2p_oper_class_map op_class[] = { 2658 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 2659 #if 0 /* Do not enable HT40 on 2 GHz for now */ 2660 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 2661 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 2662 #endif 2663 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 2664 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 2665 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 2666 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 2667 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 2668 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 2669 { -1, 0, 0, 0, 0, BW20 } 2670 }; 2671 2672 2673 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 2674 struct hostapd_hw_modes *mode, 2675 u8 channel, u8 bw) 2676 { 2677 int flag; 2678 2679 if (!has_channel(wpa_s->global, mode, channel, &flag)) 2680 return -1; 2681 if (bw == BW40MINUS && 2682 (!(flag & HOSTAPD_CHAN_HT40MINUS) || 2683 !has_channel(wpa_s->global, mode, channel - 4, NULL))) 2684 return 0; 2685 if (bw == BW40PLUS && 2686 (!(flag & HOSTAPD_CHAN_HT40PLUS) || 2687 !has_channel(wpa_s->global, mode, channel + 4, NULL))) 2688 return 0; 2689 return 1; 2690 } 2691 2692 2693 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 2694 struct p2p_channels *chan) 2695 { 2696 struct hostapd_hw_modes *mode; 2697 int cla, op; 2698 2699 if (wpa_s->hw.modes == NULL) { 2700 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 2701 "of all supported channels; assume dualband " 2702 "support"); 2703 return wpas_p2p_default_channels(wpa_s, chan); 2704 } 2705 2706 cla = 0; 2707 2708 for (op = 0; op_class[op].op_class; op++) { 2709 struct p2p_oper_class_map *o = &op_class[op]; 2710 u8 ch; 2711 struct p2p_reg_class *reg = NULL; 2712 2713 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 2714 if (mode == NULL) 2715 continue; 2716 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2717 if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1) 2718 continue; 2719 if (reg == NULL) { 2720 wpa_printf(MSG_DEBUG, "P2P: Add operating " 2721 "class %u", o->op_class); 2722 reg = &chan->reg_class[cla]; 2723 cla++; 2724 reg->reg_class = o->op_class; 2725 } 2726 reg->channel[reg->channels] = ch; 2727 reg->channels++; 2728 } 2729 if (reg) { 2730 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 2731 reg->channel, reg->channels); 2732 } 2733 } 2734 2735 chan->reg_classes = cla; 2736 2737 return 0; 2738 } 2739 2740 2741 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 2742 struct hostapd_hw_modes *mode, u8 channel) 2743 { 2744 int op, ret; 2745 2746 for (op = 0; op_class[op].op_class; op++) { 2747 struct p2p_oper_class_map *o = &op_class[op]; 2748 u8 ch; 2749 2750 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2751 if (o->mode != HOSTAPD_MODE_IEEE80211A || 2752 o->bw == BW20 || ch != channel) 2753 continue; 2754 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 2755 if (ret < 0) 2756 continue; 2757 else if (ret > 0) 2758 return (o->bw == BW40MINUS) ? -1 : 1; 2759 else 2760 return 0; 2761 } 2762 } 2763 return 0; 2764 } 2765 2766 2767 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 2768 size_t buf_len) 2769 { 2770 struct wpa_supplicant *wpa_s = ctx; 2771 2772 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2773 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 2774 break; 2775 } 2776 if (wpa_s == NULL) 2777 return -1; 2778 2779 return wpa_drv_get_noa(wpa_s, buf, buf_len); 2780 } 2781 2782 2783 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 2784 { 2785 struct wpa_supplicant *wpa_s = ctx; 2786 2787 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2788 struct wpa_ssid *ssid = wpa_s->current_ssid; 2789 if (ssid == NULL) 2790 continue; 2791 if (ssid->mode != WPAS_MODE_INFRA) 2792 continue; 2793 if (wpa_s->wpa_state != WPA_COMPLETED && 2794 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 2795 continue; 2796 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 2797 return 1; 2798 } 2799 2800 return 0; 2801 } 2802 2803 2804 /** 2805 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 2806 * @global: Pointer to global data from wpa_supplicant_init() 2807 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2808 * Returns: 0 on success, -1 on failure 2809 */ 2810 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 2811 { 2812 struct p2p_config p2p; 2813 unsigned int r; 2814 int i; 2815 2816 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 2817 return 0; 2818 2819 if (global->p2p) 2820 return 0; 2821 2822 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2823 struct p2p_params params; 2824 2825 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); 2826 os_memset(¶ms, 0, sizeof(params)); 2827 params.dev_name = wpa_s->conf->device_name; 2828 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, 2829 WPS_DEV_TYPE_LEN); 2830 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2831 os_memcpy(params.sec_dev_type, 2832 wpa_s->conf->sec_device_type, 2833 params.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2834 2835 if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) 2836 return -1; 2837 2838 return 0; 2839 } 2840 2841 os_memset(&p2p, 0, sizeof(p2p)); 2842 p2p.msg_ctx = wpa_s; 2843 p2p.cb_ctx = wpa_s; 2844 p2p.p2p_scan = wpas_p2p_scan; 2845 p2p.send_action = wpas_send_action; 2846 p2p.send_action_done = wpas_send_action_done; 2847 p2p.go_neg_completed = wpas_go_neg_completed; 2848 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 2849 p2p.dev_found = wpas_dev_found; 2850 p2p.dev_lost = wpas_dev_lost; 2851 p2p.start_listen = wpas_start_listen; 2852 p2p.stop_listen = wpas_stop_listen; 2853 p2p.send_probe_resp = wpas_send_probe_resp; 2854 p2p.sd_request = wpas_sd_request; 2855 p2p.sd_response = wpas_sd_response; 2856 p2p.prov_disc_req = wpas_prov_disc_req; 2857 p2p.prov_disc_resp = wpas_prov_disc_resp; 2858 p2p.prov_disc_fail = wpas_prov_disc_fail; 2859 p2p.invitation_process = wpas_invitation_process; 2860 p2p.invitation_received = wpas_invitation_received; 2861 p2p.invitation_result = wpas_invitation_result; 2862 p2p.get_noa = wpas_get_noa; 2863 p2p.go_connected = wpas_go_connected; 2864 2865 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 2866 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 2867 p2p.dev_name = wpa_s->conf->device_name; 2868 p2p.manufacturer = wpa_s->conf->manufacturer; 2869 p2p.model_name = wpa_s->conf->model_name; 2870 p2p.model_number = wpa_s->conf->model_number; 2871 p2p.serial_number = wpa_s->conf->serial_number; 2872 if (wpa_s->wps) { 2873 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 2874 p2p.config_methods = wpa_s->wps->config_methods; 2875 } 2876 2877 if (wpa_s->conf->p2p_listen_reg_class && 2878 wpa_s->conf->p2p_listen_channel) { 2879 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 2880 p2p.channel = wpa_s->conf->p2p_listen_channel; 2881 } else { 2882 p2p.reg_class = 81; 2883 /* 2884 * Pick one of the social channels randomly as the listen 2885 * channel. 2886 */ 2887 os_get_random((u8 *) &r, sizeof(r)); 2888 p2p.channel = 1 + (r % 3) * 5; 2889 } 2890 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 2891 2892 if (wpa_s->conf->p2p_oper_reg_class && 2893 wpa_s->conf->p2p_oper_channel) { 2894 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 2895 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 2896 p2p.cfg_op_channel = 1; 2897 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 2898 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2899 2900 } else { 2901 p2p.op_reg_class = 81; 2902 /* 2903 * Use random operation channel from (1, 6, 11) if no other 2904 * preference is indicated. 2905 */ 2906 os_get_random((u8 *) &r, sizeof(r)); 2907 p2p.op_channel = 1 + (r % 3) * 5; 2908 p2p.cfg_op_channel = 0; 2909 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 2910 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2911 } 2912 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 2913 os_memcpy(p2p.country, wpa_s->conf->country, 2); 2914 p2p.country[2] = 0x04; 2915 } else 2916 os_memcpy(p2p.country, "XX\x04", 3); 2917 2918 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { 2919 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 2920 "channel list"); 2921 return -1; 2922 } 2923 2924 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 2925 WPS_DEV_TYPE_LEN); 2926 2927 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2928 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 2929 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2930 2931 p2p.concurrent_operations = !!(wpa_s->drv_flags & 2932 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 2933 2934 p2p.max_peers = 100; 2935 2936 if (wpa_s->conf->p2p_ssid_postfix) { 2937 p2p.ssid_postfix_len = 2938 os_strlen(wpa_s->conf->p2p_ssid_postfix); 2939 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 2940 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 2941 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 2942 p2p.ssid_postfix_len); 2943 } 2944 2945 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 2946 2947 p2p.max_listen = wpa_s->max_remain_on_chan; 2948 2949 global->p2p = p2p_init(&p2p); 2950 if (global->p2p == NULL) 2951 return -1; 2952 global->p2p_init_wpa_s = wpa_s; 2953 2954 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 2955 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 2956 continue; 2957 p2p_add_wps_vendor_extension( 2958 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 2959 } 2960 2961 return 0; 2962 } 2963 2964 2965 /** 2966 * wpas_p2p_deinit - Deinitialize per-interface P2P data 2967 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2968 * 2969 * This function deinitialize per-interface P2P data. 2970 */ 2971 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 2972 { 2973 if (wpa_s->driver && wpa_s->drv_priv) 2974 wpa_drv_probe_req_report(wpa_s, 0); 2975 2976 if (wpa_s->go_params) { 2977 /* Clear any stored provisioning info */ 2978 p2p_clear_provisioning_info( 2979 wpa_s->global->p2p, 2980 wpa_s->go_params->peer_device_addr); 2981 } 2982 2983 os_free(wpa_s->go_params); 2984 wpa_s->go_params = NULL; 2985 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2986 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2987 wpa_s->p2p_long_listen = 0; 2988 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2989 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 2990 wpas_p2p_remove_pending_group_interface(wpa_s); 2991 2992 /* TODO: remove group interface from the driver if this wpa_s instance 2993 * is on top of a P2P group interface */ 2994 } 2995 2996 2997 /** 2998 * wpas_p2p_deinit_global - Deinitialize global P2P module 2999 * @global: Pointer to global data from wpa_supplicant_init() 3000 * 3001 * This function deinitializes the global (per device) P2P module. 3002 */ 3003 void wpas_p2p_deinit_global(struct wpa_global *global) 3004 { 3005 struct wpa_supplicant *wpa_s, *tmp; 3006 3007 wpa_s = global->ifaces; 3008 if (wpa_s) 3009 wpas_p2p_service_flush(wpa_s); 3010 3011 if (global->p2p == NULL) 3012 return; 3013 3014 /* Remove remaining P2P group interfaces */ 3015 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 3016 wpa_s = wpa_s->next; 3017 while (wpa_s) { 3018 tmp = global->ifaces; 3019 while (tmp && 3020 (tmp == wpa_s || 3021 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 3022 tmp = tmp->next; 3023 } 3024 if (tmp == NULL) 3025 break; 3026 /* Disconnect from the P2P group and deinit the interface */ 3027 wpas_p2p_disconnect(tmp); 3028 } 3029 3030 /* 3031 * Deinit GO data on any possibly remaining interface (if main 3032 * interface is used as GO). 3033 */ 3034 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3035 if (wpa_s->ap_iface) 3036 wpas_p2p_group_deinit(wpa_s); 3037 } 3038 3039 p2p_deinit(global->p2p); 3040 global->p2p = NULL; 3041 global->p2p_init_wpa_s = NULL; 3042 } 3043 3044 3045 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 3046 { 3047 if (wpa_s->conf->p2p_no_group_iface) 3048 return 0; /* separate interface disabled per configuration */ 3049 if (wpa_s->drv_flags & 3050 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 3051 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 3052 return 1; /* P2P group requires a new interface in every case 3053 */ 3054 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 3055 return 0; /* driver does not support concurrent operations */ 3056 if (wpa_s->global->ifaces->next) 3057 return 1; /* more that one interface already in use */ 3058 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 3059 return 1; /* this interface is already in use */ 3060 return 0; 3061 } 3062 3063 3064 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 3065 const u8 *peer_addr, 3066 enum p2p_wps_method wps_method, 3067 int go_intent, const u8 *own_interface_addr, 3068 unsigned int force_freq, int persistent_group, 3069 struct wpa_ssid *ssid, unsigned int pref_freq) 3070 { 3071 if (persistent_group && wpa_s->conf->persistent_reconnect) 3072 persistent_group = 2; 3073 3074 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3075 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, 3076 go_intent, own_interface_addr, 3077 force_freq, persistent_group); 3078 } 3079 3080 /* 3081 * Increase GO config timeout if HT40 is used since it takes some time 3082 * to scan channels for coex purposes before the BSS can be started. 3083 */ 3084 p2p_set_config_timeout(wpa_s->global->p2p, 3085 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 3086 3087 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 3088 go_intent, own_interface_addr, force_freq, 3089 persistent_group, ssid ? ssid->ssid : NULL, 3090 ssid ? ssid->ssid_len : 0, 3091 wpa_s->p2p_pd_before_go_neg, pref_freq); 3092 } 3093 3094 3095 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 3096 const u8 *peer_addr, 3097 enum p2p_wps_method wps_method, 3098 int go_intent, const u8 *own_interface_addr, 3099 unsigned int force_freq, int persistent_group, 3100 struct wpa_ssid *ssid, unsigned int pref_freq) 3101 { 3102 if (persistent_group && wpa_s->conf->persistent_reconnect) 3103 persistent_group = 2; 3104 3105 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3106 return -1; 3107 3108 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 3109 go_intent, own_interface_addr, force_freq, 3110 persistent_group, ssid ? ssid->ssid : NULL, 3111 ssid ? ssid->ssid_len : 0, pref_freq); 3112 } 3113 3114 3115 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 3116 { 3117 wpa_s->p2p_join_scan_count++; 3118 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 3119 wpa_s->p2p_join_scan_count); 3120 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 3121 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 3122 " for join operationg - stop join attempt", 3123 MAC2STR(wpa_s->pending_join_iface_addr)); 3124 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3125 if (wpa_s->p2p_auto_pd) { 3126 wpa_s->p2p_auto_pd = 0; 3127 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3128 " p2p_dev_addr=" MACSTR " status=N/A", 3129 MAC2STR(wpa_s->pending_join_dev_addr)); 3130 return; 3131 } 3132 wpa_msg(wpa_s->parent, MSG_INFO, 3133 P2P_EVENT_GROUP_FORMATION_FAILURE); 3134 } 3135 } 3136 3137 3138 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 3139 { 3140 struct wpa_supplicant *iface; 3141 int shared_freq; 3142 u8 bssid[ETH_ALEN]; 3143 3144 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) 3145 return 0; 3146 3147 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 3148 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s) 3149 continue; 3150 if (iface->current_ssid == NULL || iface->assoc_freq == 0) 3151 continue; 3152 if (iface->current_ssid->mode == WPAS_MODE_AP || 3153 iface->current_ssid->mode == WPAS_MODE_P2P_GO) 3154 shared_freq = iface->current_ssid->frequency; 3155 else if (wpa_drv_get_bssid(iface, bssid) == 0) 3156 shared_freq = iface->assoc_freq; 3157 else 3158 shared_freq = 0; 3159 3160 if (shared_freq && freq != shared_freq) { 3161 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s " 3162 "connected on %d MHz - new connection on " 3163 "%d MHz", iface->ifname, shared_freq, freq); 3164 return 1; 3165 } 3166 } 3167 3168 shared_freq = wpa_drv_shared_freq(wpa_s); 3169 if (shared_freq > 0 && shared_freq != freq) { 3170 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared " 3171 "virtual interface connected on %d MHz - new " 3172 "connection on %d MHz", shared_freq, freq); 3173 return 1; 3174 } 3175 3176 return 0; 3177 } 3178 3179 3180 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 3181 const u8 *peer_dev_addr) 3182 { 3183 struct wpa_bss *bss; 3184 int updated; 3185 3186 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 3187 if (bss == NULL) 3188 return -1; 3189 if (bss->last_update_idx < wpa_s->bss_update_idx) { 3190 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 3191 "last scan"); 3192 return 0; 3193 } 3194 3195 updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update); 3196 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 3197 "%ld.%06ld (%supdated in last scan)", 3198 bss->last_update.sec, bss->last_update.usec, 3199 updated ? "": "not "); 3200 3201 return updated; 3202 } 3203 3204 3205 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 3206 struct wpa_scan_results *scan_res) 3207 { 3208 struct wpa_bss *bss; 3209 int freq; 3210 u8 iface_addr[ETH_ALEN]; 3211 3212 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3213 3214 if (wpa_s->global->p2p_disabled) 3215 return; 3216 3217 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 3218 scan_res ? (int) scan_res->num : -1, 3219 wpa_s->p2p_auto_join ? "auto_" : ""); 3220 3221 if (scan_res) 3222 wpas_p2p_scan_res_handler(wpa_s, scan_res); 3223 3224 if (wpa_s->p2p_auto_pd) { 3225 int join = wpas_p2p_peer_go(wpa_s, 3226 wpa_s->pending_join_dev_addr); 3227 if (join == 0 && 3228 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 3229 wpa_s->auto_pd_scan_retry++; 3230 bss = wpa_bss_get_bssid(wpa_s, 3231 wpa_s->pending_join_dev_addr); 3232 if (bss) { 3233 freq = bss->freq; 3234 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 3235 "the peer " MACSTR " at %d MHz", 3236 wpa_s->auto_pd_scan_retry, 3237 MAC2STR(wpa_s-> 3238 pending_join_dev_addr), 3239 freq); 3240 wpas_p2p_join_scan_req(wpa_s, freq); 3241 return; 3242 } 3243 } 3244 3245 if (join < 0) 3246 join = 0; 3247 3248 wpa_s->p2p_auto_pd = 0; 3249 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 3250 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 3251 MAC2STR(wpa_s->pending_join_dev_addr), join); 3252 if (p2p_prov_disc_req(wpa_s->global->p2p, 3253 wpa_s->pending_join_dev_addr, 3254 wpa_s->pending_pd_config_methods, join, 3255 0, wpa_s->user_initiated_pd) < 0) { 3256 wpa_s->p2p_auto_pd = 0; 3257 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3258 " p2p_dev_addr=" MACSTR " status=N/A", 3259 MAC2STR(wpa_s->pending_join_dev_addr)); 3260 } 3261 return; 3262 } 3263 3264 if (wpa_s->p2p_auto_join) { 3265 int join = wpas_p2p_peer_go(wpa_s, 3266 wpa_s->pending_join_dev_addr); 3267 if (join < 0) { 3268 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 3269 "running a GO -> use GO Negotiation"); 3270 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 3271 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 3272 wpa_s->p2p_persistent_group, 0, 0, 0, 3273 wpa_s->p2p_go_intent, 3274 wpa_s->p2p_connect_freq, 3275 wpa_s->p2p_persistent_id, 3276 wpa_s->p2p_pd_before_go_neg, 3277 wpa_s->p2p_go_ht40); 3278 return; 3279 } 3280 3281 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 3282 "try to join the group", join ? "" : 3283 " in older scan"); 3284 if (!join) 3285 wpa_s->p2p_fallback_to_go_neg = 1; 3286 } 3287 3288 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3289 wpa_s->pending_join_iface_addr); 3290 if (freq < 0 && 3291 p2p_get_interface_addr(wpa_s->global->p2p, 3292 wpa_s->pending_join_dev_addr, 3293 iface_addr) == 0 && 3294 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 3295 { 3296 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 3297 "address for join from " MACSTR " to " MACSTR 3298 " based on newly discovered P2P peer entry", 3299 MAC2STR(wpa_s->pending_join_iface_addr), 3300 MAC2STR(iface_addr)); 3301 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 3302 ETH_ALEN); 3303 3304 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3305 wpa_s->pending_join_iface_addr); 3306 } 3307 if (freq >= 0) { 3308 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3309 "from P2P peer table: %d MHz", freq); 3310 } 3311 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 3312 if (bss) { 3313 freq = bss->freq; 3314 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3315 "from BSS table: %d MHz", freq); 3316 } 3317 if (freq > 0) { 3318 u16 method; 3319 3320 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 3321 wpa_msg(wpa_s->parent, MSG_INFO, 3322 P2P_EVENT_GROUP_FORMATION_FAILURE 3323 "reason=FREQ_CONFLICT"); 3324 return; 3325 } 3326 3327 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 3328 "prior to joining an existing group (GO " MACSTR 3329 " freq=%u MHz)", 3330 MAC2STR(wpa_s->pending_join_dev_addr), freq); 3331 wpa_s->pending_pd_before_join = 1; 3332 3333 switch (wpa_s->pending_join_wps_method) { 3334 case WPS_PIN_DISPLAY: 3335 method = WPS_CONFIG_KEYPAD; 3336 break; 3337 case WPS_PIN_KEYPAD: 3338 method = WPS_CONFIG_DISPLAY; 3339 break; 3340 case WPS_PBC: 3341 method = WPS_CONFIG_PUSHBUTTON; 3342 break; 3343 default: 3344 method = 0; 3345 break; 3346 } 3347 3348 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 3349 wpa_s->pending_join_dev_addr) == 3350 method)) { 3351 /* 3352 * We have already performed provision discovery for 3353 * joining the group. Proceed directly to join 3354 * operation without duplicated provision discovery. */ 3355 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 3356 "with " MACSTR " already done - proceed to " 3357 "join", 3358 MAC2STR(wpa_s->pending_join_dev_addr)); 3359 wpa_s->pending_pd_before_join = 0; 3360 goto start; 3361 } 3362 3363 if (p2p_prov_disc_req(wpa_s->global->p2p, 3364 wpa_s->pending_join_dev_addr, method, 1, 3365 freq, wpa_s->user_initiated_pd) < 0) { 3366 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 3367 "Discovery Request before joining an " 3368 "existing group"); 3369 wpa_s->pending_pd_before_join = 0; 3370 goto start; 3371 } 3372 return; 3373 } 3374 3375 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 3376 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3377 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3378 wpas_p2p_check_join_scan_limit(wpa_s); 3379 return; 3380 3381 start: 3382 /* Start join operation immediately */ 3383 wpas_p2p_join_start(wpa_s); 3384 } 3385 3386 3387 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq) 3388 { 3389 int ret; 3390 struct wpa_driver_scan_params params; 3391 struct wpabuf *wps_ie, *ies; 3392 size_t ielen; 3393 int freqs[2] = { 0, 0 }; 3394 3395 os_memset(¶ms, 0, sizeof(params)); 3396 3397 /* P2P Wildcard SSID */ 3398 params.num_ssids = 1; 3399 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 3400 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 3401 3402 wpa_s->wps->dev.p2p = 1; 3403 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 3404 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 3405 NULL); 3406 if (wps_ie == NULL) { 3407 wpas_p2p_scan_res_join(wpa_s, NULL); 3408 return; 3409 } 3410 3411 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 3412 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 3413 if (ies == NULL) { 3414 wpabuf_free(wps_ie); 3415 wpas_p2p_scan_res_join(wpa_s, NULL); 3416 return; 3417 } 3418 wpabuf_put_buf(ies, wps_ie); 3419 wpabuf_free(wps_ie); 3420 3421 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 3422 3423 params.p2p_probe = 1; 3424 params.extra_ies = wpabuf_head(ies); 3425 params.extra_ies_len = wpabuf_len(ies); 3426 if (freq > 0) { 3427 freqs[0] = freq; 3428 params.freqs = freqs; 3429 } 3430 3431 /* 3432 * Run a scan to update BSS table and start Provision Discovery once 3433 * the new scan results become available. 3434 */ 3435 ret = wpa_drv_scan(wpa_s, ¶ms); 3436 if (!ret) 3437 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 3438 3439 wpabuf_free(ies); 3440 3441 if (ret) { 3442 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 3443 "try again later"); 3444 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3445 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3446 wpas_p2p_check_join_scan_limit(wpa_s); 3447 } 3448 } 3449 3450 3451 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 3452 { 3453 struct wpa_supplicant *wpa_s = eloop_ctx; 3454 wpas_p2p_join_scan_req(wpa_s, 0); 3455 } 3456 3457 3458 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 3459 const u8 *dev_addr, enum p2p_wps_method wps_method, 3460 int auto_join) 3461 { 3462 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 3463 MACSTR " dev " MACSTR ")%s", 3464 MAC2STR(iface_addr), MAC2STR(dev_addr), 3465 auto_join ? " (auto_join)" : ""); 3466 3467 wpa_s->p2p_auto_pd = 0; 3468 wpa_s->p2p_auto_join = !!auto_join; 3469 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 3470 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 3471 wpa_s->pending_join_wps_method = wps_method; 3472 3473 /* Make sure we are not running find during connection establishment */ 3474 wpas_p2p_stop_find(wpa_s); 3475 3476 wpa_s->p2p_join_scan_count = 0; 3477 wpas_p2p_join_scan(wpa_s, NULL); 3478 return 0; 3479 } 3480 3481 3482 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) 3483 { 3484 struct wpa_supplicant *group; 3485 struct p2p_go_neg_results res; 3486 struct wpa_bss *bss; 3487 3488 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 3489 if (group == NULL) 3490 return -1; 3491 if (group != wpa_s) { 3492 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 3493 sizeof(group->p2p_pin)); 3494 group->p2p_wps_method = wpa_s->p2p_wps_method; 3495 } 3496 3497 group->p2p_in_provisioning = 1; 3498 wpa_s->global->p2p_group_formation = wpa_s; 3499 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 3500 3501 os_memset(&res, 0, sizeof(res)); 3502 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 3503 ETH_ALEN); 3504 res.wps_method = wpa_s->pending_join_wps_method; 3505 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 3506 if (bss) { 3507 res.freq = bss->freq; 3508 res.ssid_len = bss->ssid_len; 3509 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 3510 } 3511 3512 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 3513 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 3514 "starting client"); 3515 wpa_drv_cancel_remain_on_channel(wpa_s); 3516 wpa_s->off_channel_freq = 0; 3517 wpa_s->roc_waiting_drv_freq = 0; 3518 } 3519 wpas_start_wps_enrollee(group, &res); 3520 3521 /* 3522 * Allow a longer timeout for join-a-running-group than normal 15 3523 * second group formation timeout since the GO may not have authorized 3524 * our connection yet. 3525 */ 3526 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3527 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 3528 wpa_s, NULL); 3529 3530 return 0; 3531 } 3532 3533 3534 /** 3535 * wpas_p2p_connect - Request P2P Group Formation to be started 3536 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3537 * @peer_addr: Address of the peer P2P Device 3538 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 3539 * @persistent_group: Whether to create a persistent group 3540 * @auto_join: Whether to select join vs. GO Negotiation automatically 3541 * @join: Whether to join an existing group (as a client) instead of starting 3542 * Group Owner negotiation; @peer_addr is BSSID in that case 3543 * @auth: Whether to only authorize the connection instead of doing that and 3544 * initiating Group Owner negotiation 3545 * @go_intent: GO Intent or -1 to use default 3546 * @freq: Frequency for the group or 0 for auto-selection 3547 * @persistent_id: Persistent group credentials to use for forcing GO 3548 * parameters or -1 to generate new values (SSID/passphrase) 3549 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 3550 * interoperability workaround when initiating group formation 3551 * @ht40: Start GO with 40 MHz channel width 3552 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 3553 * failure, -2 on failure due to channel not currently available, 3554 * -3 if forced channel is not supported 3555 */ 3556 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3557 const char *pin, enum p2p_wps_method wps_method, 3558 int persistent_group, int auto_join, int join, int auth, 3559 int go_intent, int freq, int persistent_id, int pd, 3560 int ht40) 3561 { 3562 int force_freq = 0, pref_freq = 0, oper_freq = 0; 3563 u8 bssid[ETH_ALEN]; 3564 int ret = 0; 3565 enum wpa_driver_if_type iftype; 3566 const u8 *if_addr; 3567 struct wpa_ssid *ssid = NULL; 3568 3569 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3570 return -1; 3571 3572 if (persistent_id >= 0) { 3573 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 3574 if (ssid == NULL || ssid->disabled != 2 || 3575 ssid->mode != WPAS_MODE_P2P_GO) 3576 return -1; 3577 } 3578 3579 if (go_intent < 0) 3580 go_intent = wpa_s->conf->p2p_go_intent; 3581 3582 if (!auth) 3583 wpa_s->p2p_long_listen = 0; 3584 3585 wpa_s->p2p_wps_method = wps_method; 3586 wpa_s->p2p_persistent_group = !!persistent_group; 3587 wpa_s->p2p_persistent_id = persistent_id; 3588 wpa_s->p2p_go_intent = go_intent; 3589 wpa_s->p2p_connect_freq = freq; 3590 wpa_s->p2p_fallback_to_go_neg = 0; 3591 wpa_s->p2p_pd_before_go_neg = !!pd; 3592 wpa_s->p2p_go_ht40 = !!ht40; 3593 3594 if (pin) 3595 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 3596 else if (wps_method == WPS_PIN_DISPLAY) { 3597 ret = wps_generate_pin(); 3598 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 3599 ret); 3600 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 3601 wpa_s->p2p_pin); 3602 } else 3603 wpa_s->p2p_pin[0] = '\0'; 3604 3605 if (join || auto_join) { 3606 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 3607 if (auth) { 3608 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 3609 "connect a running group from " MACSTR, 3610 MAC2STR(peer_addr)); 3611 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 3612 return ret; 3613 } 3614 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 3615 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 3616 iface_addr) < 0) { 3617 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 3618 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 3619 dev_addr); 3620 } 3621 if (auto_join) { 3622 os_get_time(&wpa_s->p2p_auto_started); 3623 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 3624 "%ld.%06ld", 3625 wpa_s->p2p_auto_started.sec, 3626 wpa_s->p2p_auto_started.usec); 3627 } 3628 wpa_s->user_initiated_pd = 1; 3629 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 3630 auto_join) < 0) 3631 return -1; 3632 return ret; 3633 } 3634 3635 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3636 wpa_s->assoc_freq) 3637 oper_freq = wpa_s->assoc_freq; 3638 else { 3639 oper_freq = wpa_drv_shared_freq(wpa_s); 3640 if (oper_freq < 0) 3641 oper_freq = 0; 3642 } 3643 3644 if (freq > 0) { 3645 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3646 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 3647 "(%u MHz) is not supported for P2P uses", 3648 freq); 3649 return -3; 3650 } 3651 3652 if (oper_freq > 0 && freq != oper_freq && 3653 !(wpa_s->drv_flags & 3654 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3655 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3656 "on %u MHz while connected on another " 3657 "channel (%u MHz)", freq, oper_freq); 3658 return -2; 3659 } 3660 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3661 "requested channel (%u MHz)", freq); 3662 force_freq = freq; 3663 } else if (oper_freq > 0 && 3664 !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { 3665 if (!(wpa_s->drv_flags & 3666 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3667 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3668 "while connected on non-P2P supported " 3669 "channel (%u MHz)", oper_freq); 3670 return -2; 3671 } 3672 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 3673 "(%u MHz) not available for P2P - try to use " 3674 "another channel", oper_freq); 3675 force_freq = 0; 3676 } else if (oper_freq > 0 && 3677 (wpa_s->drv_flags & 3678 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3679 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we " 3680 "are already using (%u MHz) on another interface", 3681 oper_freq); 3682 pref_freq = oper_freq; 3683 } else if (oper_freq > 0) { 3684 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3685 "channel we are already using (%u MHz) on another " 3686 "interface", oper_freq); 3687 force_freq = oper_freq; 3688 } 3689 3690 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 3691 3692 if (wpa_s->create_p2p_iface) { 3693 /* Prepare to add a new interface for the group */ 3694 iftype = WPA_IF_P2P_GROUP; 3695 if (go_intent == 15) 3696 iftype = WPA_IF_P2P_GO; 3697 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 3698 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3699 "interface for the group"); 3700 return -1; 3701 } 3702 3703 if_addr = wpa_s->pending_interface_addr; 3704 } else 3705 if_addr = wpa_s->own_addr; 3706 3707 if (auth) { 3708 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 3709 go_intent, if_addr, 3710 force_freq, persistent_group, ssid, 3711 pref_freq) < 0) 3712 return -1; 3713 return ret; 3714 } 3715 3716 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 3717 go_intent, if_addr, force_freq, 3718 persistent_group, ssid, pref_freq) < 0) { 3719 if (wpa_s->create_p2p_iface) 3720 wpas_p2p_remove_pending_group_interface(wpa_s); 3721 return -1; 3722 } 3723 return ret; 3724 } 3725 3726 3727 /** 3728 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 3729 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3730 * @freq: Frequency of the channel in MHz 3731 * @duration: Duration of the stay on the channel in milliseconds 3732 * 3733 * This callback is called when the driver indicates that it has started the 3734 * requested remain-on-channel duration. 3735 */ 3736 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3737 unsigned int freq, unsigned int duration) 3738 { 3739 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3740 return; 3741 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 3742 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 3743 wpa_s->pending_listen_duration); 3744 wpa_s->pending_listen_freq = 0; 3745 } 3746 } 3747 3748 3749 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 3750 unsigned int timeout) 3751 { 3752 /* Limit maximum Listen state time based on driver limitation. */ 3753 if (timeout > wpa_s->max_remain_on_chan) 3754 timeout = wpa_s->max_remain_on_chan; 3755 3756 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3757 return wpa_drv_p2p_listen(wpa_s, timeout); 3758 3759 return p2p_listen(wpa_s->global->p2p, timeout); 3760 } 3761 3762 3763 /** 3764 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 3765 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3766 * @freq: Frequency of the channel in MHz 3767 * 3768 * This callback is called when the driver indicates that a remain-on-channel 3769 * operation has been completed, i.e., the duration on the requested channel 3770 * has timed out. 3771 */ 3772 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3773 unsigned int freq) 3774 { 3775 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 3776 "(p2p_long_listen=%d ms pending_action_tx=%p)", 3777 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 3778 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3779 return; 3780 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 3781 return; /* P2P module started a new operation */ 3782 if (offchannel_pending_action_tx(wpa_s)) 3783 return; 3784 if (wpa_s->p2p_long_listen > 0) 3785 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 3786 if (wpa_s->p2p_long_listen > 0) { 3787 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 3788 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 3789 } 3790 } 3791 3792 3793 /** 3794 * wpas_p2p_group_remove - Remove a P2P group 3795 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3796 * @ifname: Network interface name of the group interface or "*" to remove all 3797 * groups 3798 * Returns: 0 on success, -1 on failure 3799 * 3800 * This function is used to remove a P2P group. This can be used to disconnect 3801 * from a group in which the local end is a P2P Client or to end a P2P Group in 3802 * case the local end is the Group Owner. If a virtual network interface was 3803 * created for this group, that interface will be removed. Otherwise, only the 3804 * configured P2P group network will be removed from the interface. 3805 */ 3806 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 3807 { 3808 struct wpa_global *global = wpa_s->global; 3809 3810 if (os_strcmp(ifname, "*") == 0) { 3811 struct wpa_supplicant *prev; 3812 wpa_s = global->ifaces; 3813 while (wpa_s) { 3814 prev = wpa_s; 3815 wpa_s = wpa_s->next; 3816 wpas_p2p_disconnect(prev); 3817 } 3818 return 0; 3819 } 3820 3821 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3822 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3823 break; 3824 } 3825 3826 return wpas_p2p_disconnect(wpa_s); 3827 } 3828 3829 3830 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 3831 struct p2p_go_neg_results *params, 3832 int freq, int ht40) 3833 { 3834 u8 bssid[ETH_ALEN]; 3835 int res; 3836 3837 os_memset(params, 0, sizeof(*params)); 3838 params->role_go = 1; 3839 params->ht40 = ht40; 3840 if (freq) { 3841 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 3842 "frequency %d MHz", freq); 3843 params->freq = freq; 3844 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 3845 wpa_s->conf->p2p_oper_channel >= 1 && 3846 wpa_s->conf->p2p_oper_channel <= 11) { 3847 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 3848 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3849 "frequency %d MHz", params->freq); 3850 } else if (wpa_s->conf->p2p_oper_reg_class == 115 || 3851 wpa_s->conf->p2p_oper_reg_class == 124) { 3852 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 3853 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3854 "frequency %d MHz", params->freq); 3855 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3856 wpa_s->best_overall_freq > 0 && 3857 p2p_supported_freq(wpa_s->global->p2p, 3858 wpa_s->best_overall_freq)) { 3859 params->freq = wpa_s->best_overall_freq; 3860 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 3861 "channel %d MHz", params->freq); 3862 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3863 wpa_s->best_24_freq > 0 && 3864 p2p_supported_freq(wpa_s->global->p2p, 3865 wpa_s->best_24_freq)) { 3866 params->freq = wpa_s->best_24_freq; 3867 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 3868 "channel %d MHz", params->freq); 3869 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3870 wpa_s->best_5_freq > 0 && 3871 p2p_supported_freq(wpa_s->global->p2p, 3872 wpa_s->best_5_freq)) { 3873 params->freq = wpa_s->best_5_freq; 3874 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 3875 "channel %d MHz", params->freq); 3876 } else { 3877 int chan; 3878 for (chan = 0; chan < 11; chan++) { 3879 params->freq = 2412 + chan * 5; 3880 if (!wpas_p2p_disallowed_freq(wpa_s->global, 3881 params->freq)) 3882 break; 3883 } 3884 if (chan == 11) { 3885 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " 3886 "allowed"); 3887 return -1; 3888 } 3889 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 3890 "known)", params->freq); 3891 } 3892 3893 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3894 wpa_s->assoc_freq && !freq) { 3895 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3896 "already using"); 3897 params->freq = wpa_s->assoc_freq; 3898 } 3899 3900 res = wpa_drv_shared_freq(wpa_s); 3901 if (res > 0 && !freq) { 3902 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3903 "already using on a shared interface"); 3904 params->freq = res; 3905 } else if (res > 0 && freq != res && 3906 !(wpa_s->drv_flags & 3907 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3908 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " 3909 "while connected on another channel (%u MHz)", 3910 freq, res); 3911 return -1; 3912 } 3913 3914 return 0; 3915 } 3916 3917 3918 static struct wpa_supplicant * 3919 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 3920 int go) 3921 { 3922 struct wpa_supplicant *group_wpa_s; 3923 3924 if (!wpas_p2p_create_iface(wpa_s)) { 3925 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 3926 "operations"); 3927 return wpa_s; 3928 } 3929 3930 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 3931 WPA_IF_P2P_CLIENT) < 0) { 3932 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface"); 3933 return NULL; 3934 } 3935 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 3936 if (group_wpa_s == NULL) { 3937 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group " 3938 "interface"); 3939 wpas_p2p_remove_pending_group_interface(wpa_s); 3940 return NULL; 3941 } 3942 3943 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 3944 group_wpa_s->ifname); 3945 return group_wpa_s; 3946 } 3947 3948 3949 /** 3950 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 3951 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3952 * @persistent_group: Whether to create a persistent group 3953 * @freq: Frequency for the group or 0 to indicate no hardcoding 3954 * Returns: 0 on success, -1 on failure 3955 * 3956 * This function creates a new P2P group with the local end as the Group Owner, 3957 * i.e., without using Group Owner Negotiation. 3958 */ 3959 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 3960 int freq, int ht40) 3961 { 3962 struct p2p_go_neg_results params; 3963 unsigned int r; 3964 3965 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3966 return -1; 3967 3968 /* Make sure we are not running find during connection establishment */ 3969 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 3970 wpas_p2p_stop_find_oper(wpa_s); 3971 3972 if (freq == 2) { 3973 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 3974 "band"); 3975 if (wpa_s->best_24_freq > 0 && 3976 p2p_supported_freq(wpa_s->global->p2p, 3977 wpa_s->best_24_freq)) { 3978 freq = wpa_s->best_24_freq; 3979 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 3980 "channel: %d MHz", freq); 3981 } else { 3982 os_get_random((u8 *) &r, sizeof(r)); 3983 freq = 2412 + (r % 3) * 25; 3984 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 3985 "channel: %d MHz", freq); 3986 } 3987 } 3988 3989 if (freq == 5) { 3990 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 3991 "band"); 3992 if (wpa_s->best_5_freq > 0 && 3993 p2p_supported_freq(wpa_s->global->p2p, 3994 wpa_s->best_5_freq)) { 3995 freq = wpa_s->best_5_freq; 3996 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 3997 "channel: %d MHz", freq); 3998 } else { 3999 os_get_random((u8 *) &r, sizeof(r)); 4000 freq = 5180 + (r % 4) * 20; 4001 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 4002 wpa_printf(MSG_DEBUG, "P2P: Could not select " 4003 "5 GHz channel for P2P group"); 4004 return -1; 4005 } 4006 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 4007 "channel: %d MHz", freq); 4008 } 4009 } 4010 4011 if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { 4012 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 4013 "(%u MHz) is not supported for P2P uses", 4014 freq); 4015 return -1; 4016 } 4017 4018 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) 4019 return -1; 4020 if (params.freq && 4021 !p2p_supported_freq(wpa_s->global->p2p, params.freq)) { 4022 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " 4023 "(%u MHz) is not supported for P2P uses", 4024 params.freq); 4025 return -1; 4026 } 4027 p2p_go_params(wpa_s->global->p2p, ¶ms); 4028 params.persistent_group = persistent_group; 4029 4030 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 4031 if (wpa_s == NULL) 4032 return -1; 4033 wpas_start_wps_go(wpa_s, ¶ms, 0); 4034 4035 return 0; 4036 } 4037 4038 4039 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 4040 struct wpa_ssid *params, int addr_allocated) 4041 { 4042 struct wpa_ssid *ssid; 4043 4044 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 4045 if (wpa_s == NULL) 4046 return -1; 4047 4048 wpa_supplicant_ap_deinit(wpa_s); 4049 4050 ssid = wpa_config_add_network(wpa_s->conf); 4051 if (ssid == NULL) 4052 return -1; 4053 wpa_config_set_network_defaults(ssid); 4054 ssid->temporary = 1; 4055 ssid->proto = WPA_PROTO_RSN; 4056 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 4057 ssid->group_cipher = WPA_CIPHER_CCMP; 4058 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 4059 ssid->ssid = os_malloc(params->ssid_len); 4060 if (ssid->ssid == NULL) { 4061 wpa_config_remove_network(wpa_s->conf, ssid->id); 4062 return -1; 4063 } 4064 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 4065 ssid->ssid_len = params->ssid_len; 4066 ssid->p2p_group = 1; 4067 ssid->export_keys = 1; 4068 if (params->psk_set) { 4069 os_memcpy(ssid->psk, params->psk, 32); 4070 ssid->psk_set = 1; 4071 } 4072 if (params->passphrase) 4073 ssid->passphrase = os_strdup(params->passphrase); 4074 4075 wpa_supplicant_select_network(wpa_s, ssid); 4076 4077 wpa_s->show_group_started = 1; 4078 4079 return 0; 4080 } 4081 4082 4083 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 4084 struct wpa_ssid *ssid, int addr_allocated, 4085 int freq, int ht40) 4086 { 4087 struct p2p_go_neg_results params; 4088 int go = 0; 4089 4090 if (ssid->disabled != 2 || ssid->ssid == NULL) 4091 return -1; 4092 4093 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 4094 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 4095 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 4096 "already running"); 4097 return 0; 4098 } 4099 4100 /* Make sure we are not running find during connection establishment */ 4101 wpas_p2p_stop_find_oper(wpa_s); 4102 4103 wpa_s->p2p_fallback_to_go_neg = 0; 4104 4105 if (ssid->mode == WPAS_MODE_INFRA) 4106 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); 4107 4108 if (ssid->mode != WPAS_MODE_P2P_GO) 4109 return -1; 4110 4111 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) 4112 return -1; 4113 4114 params.role_go = 1; 4115 params.psk_set = ssid->psk_set; 4116 if (params.psk_set) 4117 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 4118 if (ssid->passphrase) { 4119 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 4120 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 4121 "persistent group"); 4122 return -1; 4123 } 4124 os_strlcpy(params.passphrase, ssid->passphrase, 4125 sizeof(params.passphrase)); 4126 } 4127 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 4128 params.ssid_len = ssid->ssid_len; 4129 params.persistent_group = 1; 4130 4131 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 4132 if (wpa_s == NULL) 4133 return -1; 4134 4135 wpas_start_wps_go(wpa_s, ¶ms, 0); 4136 4137 return 0; 4138 } 4139 4140 4141 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 4142 struct wpabuf *proberesp_ies) 4143 { 4144 struct wpa_supplicant *wpa_s = ctx; 4145 if (wpa_s->ap_iface) { 4146 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 4147 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 4148 wpabuf_free(beacon_ies); 4149 wpabuf_free(proberesp_ies); 4150 return; 4151 } 4152 if (beacon_ies) { 4153 wpabuf_free(hapd->p2p_beacon_ie); 4154 hapd->p2p_beacon_ie = beacon_ies; 4155 } 4156 wpabuf_free(hapd->p2p_probe_resp_ie); 4157 hapd->p2p_probe_resp_ie = proberesp_ies; 4158 } else { 4159 wpabuf_free(beacon_ies); 4160 wpabuf_free(proberesp_ies); 4161 } 4162 wpa_supplicant_ap_update_beacon(wpa_s); 4163 } 4164 4165 4166 static void wpas_p2p_idle_update(void *ctx, int idle) 4167 { 4168 struct wpa_supplicant *wpa_s = ctx; 4169 if (!wpa_s->ap_iface) 4170 return; 4171 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 4172 if (idle) 4173 wpas_p2p_set_group_idle_timeout(wpa_s); 4174 else 4175 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4176 } 4177 4178 4179 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 4180 struct wpa_ssid *ssid) 4181 { 4182 struct p2p_group *group; 4183 struct p2p_group_config *cfg; 4184 4185 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4186 return NULL; 4187 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4188 return NULL; 4189 4190 cfg = os_zalloc(sizeof(*cfg)); 4191 if (cfg == NULL) 4192 return NULL; 4193 4194 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 4195 cfg->persistent_group = 2; 4196 else if (ssid->p2p_persistent_group) 4197 cfg->persistent_group = 1; 4198 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 4199 if (wpa_s->max_stations && 4200 wpa_s->max_stations < wpa_s->conf->max_num_sta) 4201 cfg->max_clients = wpa_s->max_stations; 4202 else 4203 cfg->max_clients = wpa_s->conf->max_num_sta; 4204 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 4205 cfg->ssid_len = ssid->ssid_len; 4206 cfg->cb_ctx = wpa_s; 4207 cfg->ie_update = wpas_p2p_ie_update; 4208 cfg->idle_update = wpas_p2p_idle_update; 4209 4210 group = p2p_group_init(wpa_s->global->p2p, cfg); 4211 if (group == NULL) 4212 os_free(cfg); 4213 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 4214 p2p_group_notif_formation_done(group); 4215 wpa_s->p2p_group = group; 4216 return group; 4217 } 4218 4219 4220 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4221 int registrar) 4222 { 4223 struct wpa_ssid *ssid = wpa_s->current_ssid; 4224 4225 if (!wpa_s->p2p_in_provisioning) { 4226 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 4227 "provisioning not in progress"); 4228 return; 4229 } 4230 4231 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4232 u8 go_dev_addr[ETH_ALEN]; 4233 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 4234 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4235 ssid->ssid_len); 4236 /* Clear any stored provisioning info */ 4237 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 4238 } 4239 4240 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 4241 NULL); 4242 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4243 /* 4244 * Use a separate timeout for initial data connection to 4245 * complete to allow the group to be removed automatically if 4246 * something goes wrong in this step before the P2P group idle 4247 * timeout mechanism is taken into use. 4248 */ 4249 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 4250 wpas_p2p_group_formation_timeout, 4251 wpa_s->parent, NULL); 4252 } 4253 if (wpa_s->global->p2p) 4254 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 4255 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4256 wpa_drv_wps_success_cb(wpa_s, peer_addr); 4257 wpas_group_formation_completed(wpa_s, 1); 4258 } 4259 4260 4261 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 4262 struct wps_event_fail *fail) 4263 { 4264 if (!wpa_s->p2p_in_provisioning) { 4265 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 4266 "provisioning not in progress"); 4267 return; 4268 } 4269 4270 if (wpa_s->go_params) { 4271 p2p_clear_provisioning_info( 4272 wpa_s->global->p2p, 4273 wpa_s->go_params->peer_device_addr); 4274 } 4275 4276 wpas_notify_p2p_wps_failed(wpa_s, fail); 4277 } 4278 4279 4280 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4281 const char *config_method, 4282 enum wpas_p2p_prov_disc_use use) 4283 { 4284 u16 config_methods; 4285 4286 wpa_s->p2p_fallback_to_go_neg = 0; 4287 wpa_s->pending_pd_use = NORMAL_PD; 4288 if (os_strncmp(config_method, "display", 7) == 0) 4289 config_methods = WPS_CONFIG_DISPLAY; 4290 else if (os_strncmp(config_method, "keypad", 6) == 0) 4291 config_methods = WPS_CONFIG_KEYPAD; 4292 else if (os_strncmp(config_method, "pbc", 3) == 0 || 4293 os_strncmp(config_method, "pushbutton", 10) == 0) 4294 config_methods = WPS_CONFIG_PUSHBUTTON; 4295 else { 4296 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 4297 return -1; 4298 } 4299 4300 if (use == WPAS_P2P_PD_AUTO) { 4301 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 4302 wpa_s->pending_pd_config_methods = config_methods; 4303 wpa_s->p2p_auto_pd = 1; 4304 wpa_s->p2p_auto_join = 0; 4305 wpa_s->pending_pd_before_join = 0; 4306 wpa_s->auto_pd_scan_retry = 0; 4307 wpas_p2p_stop_find(wpa_s); 4308 wpa_s->p2p_join_scan_count = 0; 4309 os_get_time(&wpa_s->p2p_auto_started); 4310 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 4311 wpa_s->p2p_auto_started.sec, 4312 wpa_s->p2p_auto_started.usec); 4313 wpas_p2p_join_scan(wpa_s, NULL); 4314 return 0; 4315 } 4316 4317 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4318 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, 4319 config_methods, 4320 use == WPAS_P2P_PD_FOR_JOIN); 4321 } 4322 4323 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 4324 return -1; 4325 4326 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 4327 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 4328 0, 1); 4329 } 4330 4331 4332 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 4333 char *end) 4334 { 4335 return p2p_scan_result_text(ies, ies_len, buf, end); 4336 } 4337 4338 4339 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 4340 { 4341 if (!offchannel_pending_action_tx(wpa_s)) 4342 return; 4343 4344 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 4345 "operation request"); 4346 offchannel_clear_pending_action_tx(wpa_s); 4347 } 4348 4349 4350 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 4351 enum p2p_discovery_type type, 4352 unsigned int num_req_dev_types, const u8 *req_dev_types, 4353 const u8 *dev_id, unsigned int search_delay) 4354 { 4355 wpas_p2p_clear_pending_action_tx(wpa_s); 4356 wpa_s->p2p_long_listen = 0; 4357 4358 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4359 return wpa_drv_p2p_find(wpa_s, timeout, type); 4360 4361 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 4362 wpa_s->p2p_in_provisioning) 4363 return -1; 4364 4365 wpa_supplicant_cancel_sched_scan(wpa_s); 4366 4367 return p2p_find(wpa_s->global->p2p, timeout, type, 4368 num_req_dev_types, req_dev_types, dev_id, 4369 search_delay); 4370 } 4371 4372 4373 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 4374 { 4375 wpas_p2p_clear_pending_action_tx(wpa_s); 4376 wpa_s->p2p_long_listen = 0; 4377 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4378 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4379 wpa_s->global->p2p_cb_on_scan_complete = 0; 4380 4381 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4382 wpa_drv_p2p_stop_find(wpa_s); 4383 return 1; 4384 } 4385 4386 if (wpa_s->global->p2p) 4387 p2p_stop_find(wpa_s->global->p2p); 4388 4389 return 0; 4390 } 4391 4392 4393 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 4394 { 4395 if (wpas_p2p_stop_find_oper(wpa_s) > 0) 4396 return; 4397 wpas_p2p_remove_pending_group_interface(wpa_s); 4398 } 4399 4400 4401 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4402 { 4403 struct wpa_supplicant *wpa_s = eloop_ctx; 4404 wpa_s->p2p_long_listen = 0; 4405 } 4406 4407 4408 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 4409 { 4410 int res; 4411 4412 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4413 return -1; 4414 4415 wpa_supplicant_cancel_sched_scan(wpa_s); 4416 wpas_p2p_clear_pending_action_tx(wpa_s); 4417 4418 if (timeout == 0) { 4419 /* 4420 * This is a request for unlimited Listen state. However, at 4421 * least for now, this is mapped to a Listen state for one 4422 * hour. 4423 */ 4424 timeout = 3600; 4425 } 4426 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4427 wpa_s->p2p_long_listen = 0; 4428 4429 /* 4430 * Stop previous find/listen operation to avoid trying to request a new 4431 * remain-on-channel operation while the driver is still running the 4432 * previous one. 4433 */ 4434 if (wpa_s->global->p2p) 4435 p2p_stop_find(wpa_s->global->p2p); 4436 4437 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 4438 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 4439 wpa_s->p2p_long_listen = timeout * 1000; 4440 eloop_register_timeout(timeout, 0, 4441 wpas_p2p_long_listen_timeout, 4442 wpa_s, NULL); 4443 } 4444 4445 return res; 4446 } 4447 4448 4449 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 4450 u8 *buf, size_t len, int p2p_group) 4451 { 4452 struct wpabuf *p2p_ie; 4453 int ret; 4454 4455 if (wpa_s->global->p2p_disabled) 4456 return -1; 4457 if (wpa_s->global->p2p == NULL) 4458 return -1; 4459 if (bss == NULL) 4460 return -1; 4461 4462 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 4463 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 4464 p2p_group, p2p_ie); 4465 wpabuf_free(p2p_ie); 4466 4467 return ret; 4468 } 4469 4470 4471 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 4472 const u8 *dst, const u8 *bssid, 4473 const u8 *ie, size_t ie_len, int ssi_signal) 4474 { 4475 if (wpa_s->global->p2p_disabled) 4476 return 0; 4477 if (wpa_s->global->p2p == NULL) 4478 return 0; 4479 4480 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 4481 ie, ie_len)) { 4482 case P2P_PREQ_NOT_P2P: 4483 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 4484 ssi_signal); 4485 /* fall through */ 4486 case P2P_PREQ_MALFORMED: 4487 case P2P_PREQ_NOT_LISTEN: 4488 case P2P_PREQ_NOT_PROCESSED: 4489 default: /* make gcc happy */ 4490 return 0; 4491 case P2P_PREQ_PROCESSED: 4492 return 1; 4493 } 4494 } 4495 4496 4497 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 4498 const u8 *sa, const u8 *bssid, 4499 u8 category, const u8 *data, size_t len, int freq) 4500 { 4501 if (wpa_s->global->p2p_disabled) 4502 return; 4503 if (wpa_s->global->p2p == NULL) 4504 return; 4505 4506 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 4507 freq); 4508 } 4509 4510 4511 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 4512 { 4513 if (wpa_s->global->p2p_disabled) 4514 return; 4515 if (wpa_s->global->p2p == NULL) 4516 return; 4517 4518 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4519 } 4520 4521 4522 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 4523 { 4524 p2p_group_deinit(wpa_s->p2p_group); 4525 wpa_s->p2p_group = NULL; 4526 4527 wpa_s->ap_configured_cb = NULL; 4528 wpa_s->ap_configured_cb_ctx = NULL; 4529 wpa_s->ap_configured_cb_data = NULL; 4530 wpa_s->connect_without_scan = NULL; 4531 } 4532 4533 4534 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 4535 { 4536 wpa_s->p2p_long_listen = 0; 4537 4538 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4539 return wpa_drv_p2p_reject(wpa_s, addr); 4540 4541 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4542 return -1; 4543 4544 return p2p_reject(wpa_s->global->p2p, addr); 4545 } 4546 4547 4548 /* Invite to reinvoke a persistent group */ 4549 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4550 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 4551 int ht40) 4552 { 4553 enum p2p_invite_role role; 4554 u8 *bssid = NULL; 4555 4556 wpa_s->p2p_persistent_go_freq = freq; 4557 wpa_s->p2p_go_ht40 = !!ht40; 4558 if (ssid->mode == WPAS_MODE_P2P_GO) { 4559 role = P2P_INVITE_ROLE_GO; 4560 if (peer_addr == NULL) { 4561 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 4562 "address in invitation command"); 4563 return -1; 4564 } 4565 if (wpas_p2p_create_iface(wpa_s)) { 4566 if (wpas_p2p_add_group_interface(wpa_s, 4567 WPA_IF_P2P_GO) < 0) { 4568 wpa_printf(MSG_ERROR, "P2P: Failed to " 4569 "allocate a new interface for the " 4570 "group"); 4571 return -1; 4572 } 4573 bssid = wpa_s->pending_interface_addr; 4574 } else 4575 bssid = wpa_s->own_addr; 4576 } else { 4577 role = P2P_INVITE_ROLE_CLIENT; 4578 peer_addr = ssid->bssid; 4579 } 4580 wpa_s->pending_invite_ssid_id = ssid->id; 4581 4582 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4583 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4584 ssid->ssid, ssid->ssid_len, 4585 go_dev_addr, 1); 4586 4587 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4588 return -1; 4589 4590 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4591 ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1); 4592 } 4593 4594 4595 /* Invite to join an active group */ 4596 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 4597 const u8 *peer_addr, const u8 *go_dev_addr) 4598 { 4599 struct wpa_global *global = wpa_s->global; 4600 enum p2p_invite_role role; 4601 u8 *bssid = NULL; 4602 struct wpa_ssid *ssid; 4603 int persistent; 4604 4605 wpa_s->p2p_persistent_go_freq = 0; 4606 wpa_s->p2p_go_ht40 = 0; 4607 4608 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4609 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4610 break; 4611 } 4612 if (wpa_s == NULL) { 4613 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 4614 return -1; 4615 } 4616 4617 ssid = wpa_s->current_ssid; 4618 if (ssid == NULL) { 4619 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 4620 "invitation"); 4621 return -1; 4622 } 4623 4624 persistent = ssid->p2p_persistent_group && 4625 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 4626 ssid->ssid, ssid->ssid_len); 4627 4628 if (ssid->mode == WPAS_MODE_P2P_GO) { 4629 role = P2P_INVITE_ROLE_ACTIVE_GO; 4630 bssid = wpa_s->own_addr; 4631 if (go_dev_addr == NULL) 4632 go_dev_addr = wpa_s->global->p2p_dev_addr; 4633 } else { 4634 role = P2P_INVITE_ROLE_CLIENT; 4635 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 4636 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 4637 "invite to current group"); 4638 return -1; 4639 } 4640 bssid = wpa_s->bssid; 4641 if (go_dev_addr == NULL && 4642 !is_zero_ether_addr(wpa_s->go_dev_addr)) 4643 go_dev_addr = wpa_s->go_dev_addr; 4644 } 4645 wpa_s->parent->pending_invite_ssid_id = -1; 4646 4647 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4648 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4649 ssid->ssid, ssid->ssid_len, 4650 go_dev_addr, persistent); 4651 4652 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4653 return -1; 4654 4655 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4656 ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq, 4657 go_dev_addr, persistent); 4658 } 4659 4660 4661 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 4662 { 4663 struct wpa_ssid *ssid = wpa_s->current_ssid; 4664 const char *ssid_txt; 4665 u8 go_dev_addr[ETH_ALEN]; 4666 int network_id = -1; 4667 int persistent; 4668 int freq; 4669 4670 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 4671 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4672 wpa_s->parent, NULL); 4673 } 4674 4675 if (!wpa_s->show_group_started || !ssid) 4676 goto done; 4677 4678 wpa_s->show_group_started = 0; 4679 4680 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 4681 os_memset(go_dev_addr, 0, ETH_ALEN); 4682 if (ssid->bssid_set) 4683 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 4684 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4685 ssid->ssid_len); 4686 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 4687 4688 if (wpa_s->global->p2p_group_formation == wpa_s) 4689 wpa_s->global->p2p_group_formation = NULL; 4690 4691 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 4692 (int) wpa_s->assoc_freq; 4693 if (ssid->passphrase == NULL && ssid->psk_set) { 4694 char psk[65]; 4695 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 4696 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4697 "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 4698 MACSTR "%s", 4699 wpa_s->ifname, ssid_txt, freq, psk, 4700 MAC2STR(go_dev_addr), 4701 persistent ? " [PERSISTENT]" : ""); 4702 } else { 4703 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4704 "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " 4705 "go_dev_addr=" MACSTR "%s", 4706 wpa_s->ifname, ssid_txt, freq, 4707 ssid->passphrase ? ssid->passphrase : "", 4708 MAC2STR(go_dev_addr), 4709 persistent ? " [PERSISTENT]" : ""); 4710 } 4711 4712 if (persistent) 4713 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 4714 ssid, go_dev_addr); 4715 if (network_id < 0) 4716 network_id = ssid->id; 4717 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 4718 4719 done: 4720 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 4721 wpa_s->global->p2p != NULL) { 4722 wpa_s->global->p2p_cb_on_scan_complete = 0; 4723 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 4724 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 4725 "continued after successful connection"); 4726 p2p_increase_search_delay( 4727 wpa_s->global->p2p, 4728 wpas_p2p_search_delay(wpa_s)); 4729 } 4730 } 4731 } 4732 4733 4734 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 4735 u32 interval1, u32 duration2, u32 interval2) 4736 { 4737 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4738 return -1; 4739 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4740 return -1; 4741 4742 if (wpa_s->wpa_state < WPA_ASSOCIATED || 4743 wpa_s->current_ssid == NULL || 4744 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 4745 return -1; 4746 4747 return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 4748 wpa_s->own_addr, wpa_s->assoc_freq, 4749 duration1, interval1, duration2, interval2); 4750 } 4751 4752 4753 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 4754 unsigned int interval) 4755 { 4756 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4757 return -1; 4758 4759 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4760 return -1; 4761 4762 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 4763 } 4764 4765 4766 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 4767 { 4768 if (wpa_s->current_ssid == NULL) { 4769 /* 4770 * current_ssid can be cleared when P2P client interface gets 4771 * disconnected, so assume this interface was used as P2P 4772 * client. 4773 */ 4774 return 1; 4775 } 4776 return wpa_s->current_ssid->p2p_group && 4777 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 4778 } 4779 4780 4781 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 4782 { 4783 struct wpa_supplicant *wpa_s = eloop_ctx; 4784 4785 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 4786 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 4787 "disabled"); 4788 return; 4789 } 4790 4791 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 4792 "group"); 4793 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 4794 } 4795 4796 4797 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 4798 { 4799 int timeout; 4800 4801 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 4802 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 4803 4804 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 4805 return; 4806 4807 timeout = wpa_s->conf->p2p_group_idle; 4808 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 4809 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 4810 timeout = P2P_MAX_CLIENT_IDLE; 4811 4812 if (timeout == 0) 4813 return; 4814 4815 if (timeout < 0) { 4816 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 4817 timeout = 0; /* special client mode no-timeout */ 4818 else 4819 return; 4820 } 4821 4822 if (wpa_s->p2p_in_provisioning) { 4823 /* 4824 * Use the normal group formation timeout during the 4825 * provisioning phase to avoid terminating this process too 4826 * early due to group idle timeout. 4827 */ 4828 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4829 "during provisioning"); 4830 return; 4831 } 4832 4833 if (wpa_s->show_group_started) { 4834 /* 4835 * Use the normal group formation timeout between the end of 4836 * the provisioning phase and completion of 4-way handshake to 4837 * avoid terminating this process too early due to group idle 4838 * timeout. 4839 */ 4840 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4841 "while waiting for initial 4-way handshake to " 4842 "complete"); 4843 return; 4844 } 4845 4846 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 4847 timeout); 4848 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 4849 wpa_s, NULL); 4850 } 4851 4852 4853 /* Returns 1 if the interface was removed */ 4854 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4855 u16 reason_code, const u8 *ie, size_t ie_len, 4856 int locally_generated) 4857 { 4858 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4859 return 0; 4860 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4861 return 0; 4862 4863 if (!locally_generated) 4864 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4865 ie_len); 4866 4867 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 4868 wpa_s->current_ssid && 4869 wpa_s->current_ssid->p2p_group && 4870 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 4871 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 4872 "session is ending"); 4873 if (wpas_p2p_group_delete(wpa_s, 4874 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 4875 > 0) 4876 return 1; 4877 } 4878 4879 return 0; 4880 } 4881 4882 4883 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4884 u16 reason_code, const u8 *ie, size_t ie_len, 4885 int locally_generated) 4886 { 4887 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4888 return; 4889 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4890 return; 4891 4892 if (!locally_generated) 4893 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4894 ie_len); 4895 } 4896 4897 4898 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 4899 { 4900 struct p2p_data *p2p = wpa_s->global->p2p; 4901 4902 if (p2p == NULL) 4903 return; 4904 4905 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4906 return; 4907 4908 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 4909 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 4910 4911 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 4912 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 4913 4914 if (wpa_s->wps && 4915 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 4916 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 4917 4918 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 4919 p2p_set_uuid(p2p, wpa_s->wps->uuid); 4920 4921 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 4922 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 4923 p2p_set_model_name(p2p, wpa_s->conf->model_name); 4924 p2p_set_model_number(p2p, wpa_s->conf->model_number); 4925 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 4926 } 4927 4928 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 4929 p2p_set_sec_dev_types(p2p, 4930 (void *) wpa_s->conf->sec_device_type, 4931 wpa_s->conf->num_sec_device_types); 4932 4933 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 4934 int i; 4935 p2p_remove_wps_vendor_extensions(p2p); 4936 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4937 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4938 continue; 4939 p2p_add_wps_vendor_extension( 4940 p2p, wpa_s->conf->wps_vendor_ext[i]); 4941 } 4942 } 4943 4944 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 4945 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4946 char country[3]; 4947 country[0] = wpa_s->conf->country[0]; 4948 country[1] = wpa_s->conf->country[1]; 4949 country[2] = 0x04; 4950 p2p_set_country(p2p, country); 4951 } 4952 4953 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 4954 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 4955 wpa_s->conf->p2p_ssid_postfix ? 4956 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 4957 0); 4958 } 4959 4960 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 4961 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 4962 4963 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 4964 u8 reg_class, channel; 4965 int ret; 4966 unsigned int r; 4967 if (wpa_s->conf->p2p_listen_reg_class && 4968 wpa_s->conf->p2p_listen_channel) { 4969 reg_class = wpa_s->conf->p2p_listen_reg_class; 4970 channel = wpa_s->conf->p2p_listen_channel; 4971 } else { 4972 reg_class = 81; 4973 /* 4974 * Pick one of the social channels randomly as the 4975 * listen channel. 4976 */ 4977 os_get_random((u8 *) &r, sizeof(r)); 4978 channel = 1 + (r % 3) * 5; 4979 } 4980 ret = p2p_set_listen_channel(p2p, reg_class, channel); 4981 if (ret) 4982 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 4983 "failed: %d", ret); 4984 } 4985 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 4986 u8 op_reg_class, op_channel, cfg_op_channel; 4987 int ret = 0; 4988 unsigned int r; 4989 if (wpa_s->conf->p2p_oper_reg_class && 4990 wpa_s->conf->p2p_oper_channel) { 4991 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4992 op_channel = wpa_s->conf->p2p_oper_channel; 4993 cfg_op_channel = 1; 4994 } else { 4995 op_reg_class = 81; 4996 /* 4997 * Use random operation channel from (1, 6, 11) 4998 *if no other preference is indicated. 4999 */ 5000 os_get_random((u8 *) &r, sizeof(r)); 5001 op_channel = 1 + (r % 3) * 5; 5002 cfg_op_channel = 0; 5003 } 5004 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 5005 cfg_op_channel); 5006 if (ret) 5007 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 5008 "failed: %d", ret); 5009 } 5010 5011 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 5012 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 5013 wpa_s->conf->p2p_pref_chan) < 0) { 5014 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 5015 "update failed"); 5016 } 5017 } 5018 } 5019 5020 5021 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 5022 int duration) 5023 { 5024 if (!wpa_s->ap_iface) 5025 return -1; 5026 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 5027 duration); 5028 } 5029 5030 5031 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 5032 { 5033 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5034 return -1; 5035 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5036 return -1; 5037 5038 wpa_s->global->cross_connection = enabled; 5039 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 5040 5041 if (!enabled) { 5042 struct wpa_supplicant *iface; 5043 5044 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 5045 { 5046 if (iface->cross_connect_enabled == 0) 5047 continue; 5048 5049 iface->cross_connect_enabled = 0; 5050 iface->cross_connect_in_use = 0; 5051 wpa_msg(iface->parent, MSG_INFO, 5052 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5053 iface->ifname, iface->cross_connect_uplink); 5054 } 5055 } 5056 5057 return 0; 5058 } 5059 5060 5061 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 5062 { 5063 struct wpa_supplicant *iface; 5064 5065 if (!uplink->global->cross_connection) 5066 return; 5067 5068 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5069 if (!iface->cross_connect_enabled) 5070 continue; 5071 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5072 0) 5073 continue; 5074 if (iface->ap_iface == NULL) 5075 continue; 5076 if (iface->cross_connect_in_use) 5077 continue; 5078 5079 iface->cross_connect_in_use = 1; 5080 wpa_msg(iface->parent, MSG_INFO, 5081 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5082 iface->ifname, iface->cross_connect_uplink); 5083 } 5084 } 5085 5086 5087 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 5088 { 5089 struct wpa_supplicant *iface; 5090 5091 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5092 if (!iface->cross_connect_enabled) 5093 continue; 5094 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5095 0) 5096 continue; 5097 if (!iface->cross_connect_in_use) 5098 continue; 5099 5100 wpa_msg(iface->parent, MSG_INFO, 5101 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5102 iface->ifname, iface->cross_connect_uplink); 5103 iface->cross_connect_in_use = 0; 5104 } 5105 } 5106 5107 5108 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 5109 { 5110 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 5111 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 5112 wpa_s->cross_connect_disallowed) 5113 wpas_p2p_disable_cross_connect(wpa_s); 5114 else 5115 wpas_p2p_enable_cross_connect(wpa_s); 5116 if (!wpa_s->ap_iface && 5117 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 5118 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 5119 } 5120 5121 5122 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 5123 { 5124 wpas_p2p_disable_cross_connect(wpa_s); 5125 if (!wpa_s->ap_iface && 5126 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 5127 wpa_s, NULL)) 5128 wpas_p2p_set_group_idle_timeout(wpa_s); 5129 } 5130 5131 5132 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 5133 { 5134 struct wpa_supplicant *iface; 5135 5136 if (!wpa_s->global->cross_connection) 5137 return; 5138 5139 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 5140 if (iface == wpa_s) 5141 continue; 5142 if (iface->drv_flags & 5143 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 5144 continue; 5145 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 5146 continue; 5147 5148 wpa_s->cross_connect_enabled = 1; 5149 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 5150 sizeof(wpa_s->cross_connect_uplink)); 5151 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 5152 "%s to %s whenever uplink is available", 5153 wpa_s->ifname, wpa_s->cross_connect_uplink); 5154 5155 if (iface->ap_iface || iface->current_ssid == NULL || 5156 iface->current_ssid->mode != WPAS_MODE_INFRA || 5157 iface->cross_connect_disallowed || 5158 iface->wpa_state != WPA_COMPLETED) 5159 break; 5160 5161 wpa_s->cross_connect_in_use = 1; 5162 wpa_msg(wpa_s->parent, MSG_INFO, 5163 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5164 wpa_s->ifname, wpa_s->cross_connect_uplink); 5165 break; 5166 } 5167 } 5168 5169 5170 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 5171 { 5172 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 5173 !wpa_s->p2p_in_provisioning) 5174 return 0; /* not P2P client operation */ 5175 5176 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 5177 "session overlap"); 5178 if (wpa_s != wpa_s->parent) 5179 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 5180 5181 if (wpa_s->global->p2p) 5182 p2p_group_formation_failed(wpa_s->global->p2p); 5183 5184 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5185 wpa_s->parent, NULL); 5186 5187 wpas_group_formation_completed(wpa_s, 0); 5188 return 1; 5189 } 5190 5191 5192 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 5193 { 5194 struct p2p_channels chan; 5195 5196 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 5197 return; 5198 5199 os_memset(&chan, 0, sizeof(chan)); 5200 if (wpas_p2p_setup_channels(wpa_s, &chan)) { 5201 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 5202 "channel list"); 5203 return; 5204 } 5205 5206 p2p_update_channel_list(wpa_s->global->p2p, &chan); 5207 } 5208 5209 5210 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 5211 struct wpa_scan_results *scan_res) 5212 { 5213 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 5214 } 5215 5216 5217 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 5218 { 5219 struct wpa_global *global = wpa_s->global; 5220 int found = 0; 5221 const u8 *peer; 5222 5223 if (global->p2p == NULL) 5224 return -1; 5225 5226 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 5227 5228 if (wpa_s->pending_interface_name[0] && 5229 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 5230 found = 1; 5231 5232 peer = p2p_get_go_neg_peer(global->p2p); 5233 if (peer) { 5234 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 5235 MACSTR, MAC2STR(peer)); 5236 p2p_unauthorize(global->p2p, peer); 5237 found = 1; 5238 } 5239 5240 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 5241 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 5242 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 5243 found = 1; 5244 } 5245 5246 if (wpa_s->pending_pd_before_join) { 5247 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 5248 wpa_s->pending_pd_before_join = 0; 5249 found = 1; 5250 } 5251 5252 wpas_p2p_stop_find(wpa_s); 5253 5254 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5255 if (wpa_s == global->p2p_group_formation && 5256 (wpa_s->p2p_in_provisioning || 5257 wpa_s->parent->pending_interface_type == 5258 WPA_IF_P2P_CLIENT)) { 5259 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 5260 "formation found - cancelling", 5261 wpa_s->ifname); 5262 found = 1; 5263 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5264 wpa_s->parent, NULL); 5265 if (wpa_s->p2p_in_provisioning) { 5266 wpas_group_formation_completed(wpa_s, 0); 5267 break; 5268 } 5269 wpas_p2p_group_delete(wpa_s, 5270 P2P_GROUP_REMOVAL_REQUESTED); 5271 break; 5272 } 5273 } 5274 5275 if (!found) { 5276 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 5277 return -1; 5278 } 5279 5280 return 0; 5281 } 5282 5283 5284 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 5285 { 5286 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 5287 return; 5288 5289 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 5290 "being available anymore"); 5291 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 5292 } 5293 5294 5295 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 5296 int freq_24, int freq_5, int freq_overall) 5297 { 5298 struct p2p_data *p2p = wpa_s->global->p2p; 5299 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5300 return; 5301 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 5302 } 5303 5304 5305 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 5306 { 5307 u8 peer[ETH_ALEN]; 5308 struct p2p_data *p2p = wpa_s->global->p2p; 5309 5310 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5311 return -1; 5312 5313 if (hwaddr_aton(addr, peer)) 5314 return -1; 5315 5316 return p2p_unauthorize(p2p, peer); 5317 } 5318 5319 5320 /** 5321 * wpas_p2p_disconnect - Disconnect from a P2P Group 5322 * @wpa_s: Pointer to wpa_supplicant data 5323 * Returns: 0 on success, -1 on failure 5324 * 5325 * This can be used to disconnect from a group in which the local end is a P2P 5326 * Client or to end a P2P Group in case the local end is the Group Owner. If a 5327 * virtual network interface was created for this group, that interface will be 5328 * removed. Otherwise, only the configured P2P group network will be removed 5329 * from the interface. 5330 */ 5331 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 5332 { 5333 5334 if (wpa_s == NULL) 5335 return -1; 5336 5337 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 5338 -1 : 0; 5339 } 5340 5341 5342 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 5343 { 5344 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5345 return 0; 5346 5347 return p2p_in_progress(wpa_s->global->p2p); 5348 } 5349 5350 5351 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 5352 struct wpa_ssid *ssid) 5353 { 5354 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 5355 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5356 wpa_s->parent, NULL) > 0) { 5357 /** 5358 * Remove the network by scheduling the group formation 5359 * timeout to happen immediately. The teardown code 5360 * needs to be scheduled to run asynch later so that we 5361 * don't delete data from under ourselves unexpectedly. 5362 * Calling wpas_p2p_group_formation_timeout directly 5363 * causes a series of crashes in WPS failure scenarios. 5364 */ 5365 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 5366 "P2P group network getting removed"); 5367 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 5368 wpa_s->parent, NULL); 5369 } 5370 } 5371 5372 5373 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 5374 const u8 *addr, const u8 *ssid, 5375 size_t ssid_len) 5376 { 5377 struct wpa_ssid *s; 5378 size_t i; 5379 5380 for (s = wpa_s->conf->ssid; s; s = s->next) { 5381 if (s->disabled != 2) 5382 continue; 5383 if (ssid && 5384 (ssid_len != s->ssid_len || 5385 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 5386 continue; 5387 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 5388 return s; /* peer is GO in the persistent group */ 5389 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 5390 continue; 5391 for (i = 0; i < s->num_p2p_clients; i++) { 5392 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 5393 addr, ETH_ALEN) == 0) 5394 return s; /* peer is P2P client in persistent 5395 * group */ 5396 } 5397 } 5398 5399 return NULL; 5400 } 5401 5402 5403 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 5404 const u8 *addr) 5405 { 5406 if (addr == NULL) 5407 return; 5408 wpas_p2p_add_persistent_group_client(wpa_s, addr); 5409 } 5410 5411 5412 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 5413 int group_added) 5414 { 5415 struct wpa_supplicant *group = wpa_s; 5416 if (wpa_s->global->p2p_group_formation) 5417 group = wpa_s->global->p2p_group_formation; 5418 wpa_s = wpa_s->parent; 5419 offchannel_send_action_done(wpa_s); 5420 if (group_added) 5421 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 5422 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 5423 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 5424 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 5425 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 5426 wpa_s->p2p_persistent_id, 5427 wpa_s->p2p_pd_before_go_neg, 5428 wpa_s->p2p_go_ht40); 5429 } 5430 5431 5432 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 5433 { 5434 if (!wpa_s->p2p_fallback_to_go_neg || 5435 wpa_s->p2p_in_provisioning <= 5) 5436 return 0; 5437 5438 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 5439 return 0; /* peer operating as a GO */ 5440 5441 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 5442 "fallback to GO Negotiation"); 5443 wpas_p2p_fallback_to_go_neg(wpa_s, 1); 5444 5445 return 1; 5446 } 5447 5448 5449 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 5450 { 5451 const char *rn, *rn2; 5452 struct wpa_supplicant *ifs; 5453 5454 if (wpa_s->wpa_state > WPA_SCANNING) { 5455 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 5456 "concurrent operation", 5457 P2P_CONCURRENT_SEARCH_DELAY); 5458 return P2P_CONCURRENT_SEARCH_DELAY; 5459 } 5460 5461 if (!wpa_s->driver->get_radio_name) 5462 return 0; 5463 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv); 5464 if (rn == NULL || rn[0] == '\0') 5465 return 0; 5466 5467 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 5468 if (ifs == wpa_s || !ifs->driver->get_radio_name) 5469 continue; 5470 5471 rn2 = ifs->driver->get_radio_name(ifs->drv_priv); 5472 if (!rn2 || os_strcmp(rn, rn2) != 0) 5473 continue; 5474 if (ifs->wpa_state > WPA_SCANNING) { 5475 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 5476 "delay due to concurrent operation on " 5477 "interface %s", 5478 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname); 5479 return P2P_CONCURRENT_SEARCH_DELAY; 5480 } 5481 } 5482 5483 return 0; 5484 } 5485