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#ifdef ANDROID_P2P 50#define P2P_MAX_CLIENT_IDLE 20 51#else 52#define P2P_MAX_CLIENT_IDLE 10 53#endif /* ANDROID_P2P */ 54#endif /* P2P_MAX_CLIENT_IDLE */ 55 56#ifndef P2P_MAX_INITIAL_CONN_WAIT 57/* 58 * How many seconds to wait for initial 4-way handshake to get completed after 59 * WPS provisioning step. 60 */ 61#define P2P_MAX_INITIAL_CONN_WAIT 10 62#endif /* P2P_MAX_INITIAL_CONN_WAIT */ 63 64#ifndef P2P_CONCURRENT_SEARCH_DELAY 65#define P2P_CONCURRENT_SEARCH_DELAY 500 66#endif /* P2P_CONCURRENT_SEARCH_DELAY */ 67 68enum p2p_group_removal_reason { 69 P2P_GROUP_REMOVAL_UNKNOWN, 70 P2P_GROUP_REMOVAL_SILENT, 71 P2P_GROUP_REMOVAL_FORMATION_FAILED, 72 P2P_GROUP_REMOVAL_REQUESTED, 73 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 74 P2P_GROUP_REMOVAL_UNAVAILABLE, 75 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 76#ifdef ANDROID_P2P 77 P2P_GROUP_REMOVAL_FREQ_CONFLICT 78#endif 79}; 80 81 82static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 83static struct wpa_supplicant * 84wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 85 int go); 86static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s); 87static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq); 88static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 89static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 90 const u8 *dev_addr, enum p2p_wps_method wps_method, 91 int auto_join); 92static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 93static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 94static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 95static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 96static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 97 void *timeout_ctx); 98static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 99 int group_added); 100static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 101 102 103static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 104 int freq) 105{ 106 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 107 return; 108 if (freq > 0 && 109 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) && 110 wpa_s->parent->conf->p2p_ignore_shared_freq) 111 freq = 0; 112 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 113} 114 115 116static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 117 struct wpa_scan_results *scan_res) 118{ 119 size_t i; 120 121 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 122 return; 123 124 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 125 (int) scan_res->num); 126 127 for (i = 0; i < scan_res->num; i++) { 128 struct wpa_scan_res *bss = scan_res->res[i]; 129 struct os_time time_tmp_age, entry_ts; 130 time_tmp_age.sec = bss->age / 1000; 131 time_tmp_age.usec = (bss->age % 1000) * 1000; 132 os_time_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 133 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 134 bss->freq, &entry_ts, bss->level, 135 (const u8 *) (bss + 1), 136 bss->ie_len) > 0) 137 break; 138 } 139 140 p2p_scan_res_handled(wpa_s->global->p2p); 141} 142 143 144static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 145 unsigned int num_req_dev_types, 146 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 147{ 148 struct wpa_supplicant *wpa_s = ctx; 149 struct wpa_supplicant *ifs; 150 struct wpa_driver_scan_params params; 151 int ret; 152 struct wpabuf *wps_ie, *ies; 153 int social_channels[] = { 2412, 2437, 2462, 0, 0 }; 154 size_t ielen; 155 156 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 157 return -1; 158 159 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 160 if (ifs->sta_scan_pending && 161 (wpas_scan_scheduled(ifs) || ifs->scanning) && 162 wpas_p2p_in_progress(wpa_s) == 2) { 163 wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow " 164 "pending station mode scan to be " 165 "completed on interface %s", ifs->ifname); 166 wpa_s->global->p2p_cb_on_scan_complete = 1; 167 wpa_supplicant_req_scan(ifs, 0, 0); 168 return 1; 169 } 170 } 171 172 os_memset(¶ms, 0, sizeof(params)); 173 174 /* P2P Wildcard SSID */ 175 params.num_ssids = 1; 176 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 177 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 178 179 wpa_s->wps->dev.p2p = 1; 180 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 181 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 182 num_req_dev_types, req_dev_types); 183 if (wps_ie == NULL) 184 return -1; 185 186 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 187 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 188 if (ies == NULL) { 189 wpabuf_free(wps_ie); 190 return -1; 191 } 192 wpabuf_put_buf(ies, wps_ie); 193 wpabuf_free(wps_ie); 194 195 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 196 197 params.p2p_probe = 1; 198 params.extra_ies = wpabuf_head(ies); 199 params.extra_ies_len = wpabuf_len(ies); 200 201 switch (type) { 202 case P2P_SCAN_SOCIAL: 203 params.freqs = social_channels; 204 break; 205 case P2P_SCAN_FULL: 206 break; 207 case P2P_SCAN_SPECIFIC: 208 social_channels[0] = freq; 209 social_channels[1] = 0; 210 params.freqs = social_channels; 211 break; 212 case P2P_SCAN_SOCIAL_PLUS_ONE: 213 social_channels[3] = freq; 214 params.freqs = social_channels; 215 break; 216 } 217 218 ret = wpa_drv_scan(wpa_s, ¶ms); 219 220 wpabuf_free(ies); 221 222 if (ret) { 223 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 224 if (ifs->scanning || 225 ifs->scan_res_handler == wpas_p2p_scan_res_handler) { 226 wpa_s->global->p2p_cb_on_scan_complete = 1; 227 ret = 1; 228 break; 229 } 230 } 231 } else { 232 os_get_time(&wpa_s->scan_trigger_time); 233 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 234 } 235 236 return ret; 237} 238 239 240static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 241{ 242 switch (p2p_group_interface) { 243 case P2P_GROUP_INTERFACE_PENDING: 244 return WPA_IF_P2P_GROUP; 245 case P2P_GROUP_INTERFACE_GO: 246 return WPA_IF_P2P_GO; 247 case P2P_GROUP_INTERFACE_CLIENT: 248 return WPA_IF_P2P_CLIENT; 249 } 250 251 return WPA_IF_P2P_GROUP; 252} 253 254 255static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 256 const u8 *ssid, 257 size_t ssid_len, int *go) 258{ 259 struct wpa_ssid *s; 260 261 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 262 for (s = wpa_s->conf->ssid; s; s = s->next) { 263 if (s->disabled != 0 || !s->p2p_group || 264 s->ssid_len != ssid_len || 265 os_memcmp(ssid, s->ssid, ssid_len) != 0) 266 continue; 267 if (s->mode == WPAS_MODE_P2P_GO && 268 s != wpa_s->current_ssid) 269 continue; 270 if (go) 271 *go = s->mode == WPAS_MODE_P2P_GO; 272 return wpa_s; 273 } 274 } 275 276 return NULL; 277} 278 279 280static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 281 enum p2p_group_removal_reason removal_reason) 282{ 283 struct wpa_ssid *ssid; 284 char *gtype; 285 const char *reason; 286 287 ssid = wpa_s->current_ssid; 288 if (ssid == NULL) { 289 /* 290 * The current SSID was not known, but there may still be a 291 * pending P2P group interface waiting for provisioning or a 292 * P2P group that is trying to reconnect. 293 */ 294 ssid = wpa_s->conf->ssid; 295 while (ssid) { 296 if (ssid->p2p_group && ssid->disabled != 2) 297 break; 298 ssid = ssid->next; 299 } 300 if (ssid == NULL && 301 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 302 { 303 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 304 "not found"); 305 return -1; 306 } 307 } 308 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 309 gtype = "GO"; 310 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 311 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 312 wpa_s->reassociate = 0; 313 wpa_s->disconnected = 1; 314 wpa_supplicant_deauthenticate(wpa_s, 315 WLAN_REASON_DEAUTH_LEAVING); 316 gtype = "client"; 317 } else 318 gtype = "GO"; 319 if (wpa_s->cross_connect_in_use) { 320 wpa_s->cross_connect_in_use = 0; 321 wpa_msg(wpa_s->parent, MSG_INFO, 322 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 323 wpa_s->ifname, wpa_s->cross_connect_uplink); 324 } 325 switch (removal_reason) { 326 case P2P_GROUP_REMOVAL_REQUESTED: 327 reason = " reason=REQUESTED"; 328 break; 329 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 330 reason = " reason=FORMATION_FAILED"; 331 break; 332 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 333 reason = " reason=IDLE"; 334 break; 335 case P2P_GROUP_REMOVAL_UNAVAILABLE: 336 reason = " reason=UNAVAILABLE"; 337 break; 338 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 339 reason = " reason=GO_ENDING_SESSION"; 340 break; 341#ifdef ANDROID_P2P 342 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 343 reason = " reason=FREQ_CONFLICT"; 344 break; 345#endif 346 default: 347 reason = ""; 348 break; 349 } 350 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 351 wpa_msg(wpa_s->parent, MSG_INFO, 352 P2P_EVENT_GROUP_REMOVED "%s %s%s", 353 wpa_s->ifname, gtype, reason); 354 } 355 356 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 357 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 358 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 359 wpa_s->parent, NULL) > 0) { 360 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 361 "timeout"); 362 wpa_s->p2p_in_provisioning = 0; 363 } 364 365 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 366 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 367 368 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 369 struct wpa_global *global; 370 char *ifname; 371 enum wpa_driver_if_type type; 372 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 373 wpa_s->ifname); 374 global = wpa_s->global; 375 ifname = os_strdup(wpa_s->ifname); 376 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 377 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 378 wpa_s = global->ifaces; 379 if (wpa_s && ifname) 380 wpa_drv_if_remove(wpa_s, type, ifname); 381 os_free(ifname); 382 return 1; 383 } 384 385 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 386 if (ssid && (ssid->p2p_group || 387 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 388 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 389 int id = ssid->id; 390 if (ssid == wpa_s->current_ssid) { 391 wpa_sm_set_config(wpa_s->wpa, NULL); 392 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 393 wpa_s->current_ssid = NULL; 394 } 395 /* 396 * Networks objects created during any P2P activities are not 397 * exposed out as they might/will confuse certain non-P2P aware 398 * applications since these network objects won't behave like 399 * regular ones. 400 * 401 * Likewise, we don't send out network removed signals for such 402 * network objects. 403 */ 404 wpa_config_remove_network(wpa_s->conf, id); 405 wpa_supplicant_clear_status(wpa_s); 406 wpa_supplicant_cancel_sched_scan(wpa_s); 407 wpa_s->sta_scan_pending = 0; 408 } else { 409 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 410 "found"); 411 } 412 if (wpa_s->ap_iface) 413 wpa_supplicant_ap_deinit(wpa_s); 414 else 415 wpa_drv_deinit_p2p_cli(wpa_s); 416 417 return 0; 418} 419 420 421static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 422 u8 *go_dev_addr, 423 const u8 *ssid, size_t ssid_len) 424{ 425 struct wpa_bss *bss; 426 const u8 *bssid; 427 struct wpabuf *p2p; 428 u8 group_capab; 429 const u8 *addr; 430 431 if (wpa_s->go_params) 432 bssid = wpa_s->go_params->peer_interface_addr; 433 else 434 bssid = wpa_s->bssid; 435 436 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 437 if (bss == NULL) { 438 u8 iface_addr[ETH_ALEN]; 439 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 440 iface_addr) == 0) 441 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 442 } 443 if (bss == NULL) { 444 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 445 "group is persistent - BSS " MACSTR " not found", 446 MAC2STR(bssid)); 447 return 0; 448 } 449 450 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 451 if (p2p == NULL) { 452 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 453 "group is persistent - BSS " MACSTR 454 " did not include P2P IE", MAC2STR(bssid)); 455 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 456 (u8 *) (bss + 1), bss->ie_len); 457 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 458 ((u8 *) bss + 1) + bss->ie_len, 459 bss->beacon_ie_len); 460 return 0; 461 } 462 463 group_capab = p2p_get_group_capab(p2p); 464 addr = p2p_get_go_dev_addr(p2p); 465 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 466 "group_capab=0x%x", group_capab); 467 if (addr) { 468 os_memcpy(go_dev_addr, addr, ETH_ALEN); 469 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 470 MAC2STR(addr)); 471 } else 472 os_memset(go_dev_addr, 0, ETH_ALEN); 473 wpabuf_free(p2p); 474 475 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 476 "go_dev_addr=" MACSTR, 477 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 478 479 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 480} 481 482 483static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 484 struct wpa_ssid *ssid, 485 const u8 *go_dev_addr) 486{ 487 struct wpa_ssid *s; 488 int changed = 0; 489 490 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 491 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 492 for (s = wpa_s->conf->ssid; s; s = s->next) { 493 if (s->disabled == 2 && 494 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 495 s->ssid_len == ssid->ssid_len && 496 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 497 break; 498 } 499 500 if (s) { 501 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 502 "entry"); 503 if (ssid->passphrase && !s->passphrase) 504 changed = 1; 505 else if (ssid->passphrase && s->passphrase && 506 os_strcmp(ssid->passphrase, s->passphrase) != 0) 507 changed = 1; 508 } else { 509 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 510 "entry"); 511 changed = 1; 512 s = wpa_config_add_network(wpa_s->conf); 513 if (s == NULL) 514 return -1; 515 516 /* 517 * Instead of network_added we emit persistent_group_added 518 * notification. Also to keep the defense checks in 519 * persistent_group obj registration method, we set the 520 * relevant flags in s to designate it as a persistent group. 521 */ 522 s->p2p_group = 1; 523 s->p2p_persistent_group = 1; 524 wpas_notify_persistent_group_added(wpa_s, s); 525 wpa_config_set_network_defaults(s); 526 } 527 528 s->p2p_group = 1; 529 s->p2p_persistent_group = 1; 530 s->disabled = 2; 531 s->bssid_set = 1; 532 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 533 s->mode = ssid->mode; 534 s->auth_alg = WPA_AUTH_ALG_OPEN; 535 s->key_mgmt = WPA_KEY_MGMT_PSK; 536 s->proto = WPA_PROTO_RSN; 537 s->pairwise_cipher = WPA_CIPHER_CCMP; 538 s->export_keys = 1; 539 if (ssid->passphrase) { 540 os_free(s->passphrase); 541 s->passphrase = os_strdup(ssid->passphrase); 542 } 543 if (ssid->psk_set) { 544 s->psk_set = 1; 545 os_memcpy(s->psk, ssid->psk, 32); 546 } 547 if (s->passphrase && !s->psk_set) 548 wpa_config_update_psk(s); 549 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 550 os_free(s->ssid); 551 s->ssid = os_malloc(ssid->ssid_len); 552 } 553 if (s->ssid) { 554 s->ssid_len = ssid->ssid_len; 555 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 556 } 557 558#ifndef CONFIG_NO_CONFIG_WRITE 559 if (changed && wpa_s->conf->update_config && 560 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 561 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 562 } 563#endif /* CONFIG_NO_CONFIG_WRITE */ 564 565 return s->id; 566} 567 568 569static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 570 const u8 *addr) 571{ 572 struct wpa_ssid *ssid, *s; 573 u8 *n; 574 size_t i; 575 int found = 0; 576 577 ssid = wpa_s->current_ssid; 578 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 579 !ssid->p2p_persistent_group) 580 return; 581 582 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 583 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 584 continue; 585 586 if (s->ssid_len == ssid->ssid_len && 587 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 588 break; 589 } 590 591 if (s == NULL) 592 return; 593 594 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 595 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 596 ETH_ALEN) != 0) 597 continue; 598 599 if (i == s->num_p2p_clients - 1) 600 return; /* already the most recent entry */ 601 602 /* move the entry to mark it most recent */ 603 os_memmove(s->p2p_client_list + i * ETH_ALEN, 604 s->p2p_client_list + (i + 1) * ETH_ALEN, 605 (s->num_p2p_clients - i - 1) * ETH_ALEN); 606 os_memcpy(s->p2p_client_list + 607 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN); 608 found = 1; 609 break; 610 } 611 612 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 613 n = os_realloc_array(s->p2p_client_list, 614 s->num_p2p_clients + 1, ETH_ALEN); 615 if (n == NULL) 616 return; 617 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 618 s->p2p_client_list = n; 619 s->num_p2p_clients++; 620 } else if (!found) { 621 /* Not enough room for an additional entry - drop the oldest 622 * entry */ 623 os_memmove(s->p2p_client_list, 624 s->p2p_client_list + ETH_ALEN, 625 (s->num_p2p_clients - 1) * ETH_ALEN); 626 os_memcpy(s->p2p_client_list + 627 (s->num_p2p_clients - 1) * ETH_ALEN, 628 addr, ETH_ALEN); 629 } 630 631#ifndef CONFIG_NO_CONFIG_WRITE 632 if (wpa_s->parent->conf->update_config && 633 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 634 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 635#endif /* CONFIG_NO_CONFIG_WRITE */ 636} 637 638 639static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 640 int success) 641{ 642 struct wpa_ssid *ssid; 643 const char *ssid_txt; 644 int client; 645 int persistent; 646 u8 go_dev_addr[ETH_ALEN]; 647 int network_id = -1; 648 649 /* 650 * This callback is likely called for the main interface. Update wpa_s 651 * to use the group interface if a new interface was created for the 652 * group. 653 */ 654 if (wpa_s->global->p2p_group_formation) 655 wpa_s = wpa_s->global->p2p_group_formation; 656 wpa_s->global->p2p_group_formation = NULL; 657 wpa_s->p2p_in_provisioning = 0; 658 659 if (!success) { 660 wpa_msg(wpa_s->parent, MSG_INFO, 661 P2P_EVENT_GROUP_FORMATION_FAILURE); 662 wpas_p2p_group_delete(wpa_s, 663 P2P_GROUP_REMOVAL_FORMATION_FAILED); 664 return; 665 } 666 667 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); 668 669 ssid = wpa_s->current_ssid; 670 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 671 ssid->mode = WPAS_MODE_P2P_GO; 672 p2p_group_notif_formation_done(wpa_s->p2p_group); 673 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 674 } 675 676 persistent = 0; 677 if (ssid) { 678 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 679 client = ssid->mode == WPAS_MODE_INFRA; 680 if (ssid->mode == WPAS_MODE_P2P_GO) { 681 persistent = ssid->p2p_persistent_group; 682 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 683 ETH_ALEN); 684 } else 685 persistent = wpas_p2p_persistent_group(wpa_s, 686 go_dev_addr, 687 ssid->ssid, 688 ssid->ssid_len); 689 } else { 690 ssid_txt = ""; 691 client = wpa_s->p2p_group_interface == 692 P2P_GROUP_INTERFACE_CLIENT; 693 os_memset(go_dev_addr, 0, ETH_ALEN); 694 } 695 696 wpa_s->show_group_started = 0; 697 if (client) { 698 /* 699 * Indicate event only after successfully completed 4-way 700 * handshake, i.e., when the interface is ready for data 701 * packets. 702 */ 703 wpa_s->show_group_started = 1; 704#ifdef ANDROID_P2P 705 /* For client Second phase of Group formation (4-way handshake) can be still pending 706 * So we need to restore wpa_s->global->p2p_group_formation */ 707 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s); 708 wpa_s->global->p2p_group_formation = wpa_s; 709#endif 710 711 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 712 char psk[65]; 713 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 714 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 715 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR 716 "%s", 717 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 718 MAC2STR(go_dev_addr), 719 persistent ? " [PERSISTENT]" : ""); 720 wpas_p2p_cross_connect_setup(wpa_s); 721 wpas_p2p_set_group_idle_timeout(wpa_s); 722 } else { 723 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 724 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 725 "go_dev_addr=" MACSTR "%s", 726 wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, 727 ssid && ssid->passphrase ? ssid->passphrase : "", 728 MAC2STR(go_dev_addr), 729 persistent ? " [PERSISTENT]" : ""); 730 wpas_p2p_cross_connect_setup(wpa_s); 731 wpas_p2p_set_group_idle_timeout(wpa_s); 732 } 733 734 if (persistent) 735 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 736 ssid, go_dev_addr); 737 if (network_id < 0 && ssid) 738 network_id = ssid->id; 739 if (!client) 740 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 741} 742 743 744static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 745 unsigned int freq, 746 const u8 *dst, const u8 *src, 747 const u8 *bssid, 748 const u8 *data, size_t data_len, 749 enum offchannel_send_action_result 750 result) 751{ 752 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 753 754 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 755 return; 756 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 757 return; 758 759 switch (result) { 760 case OFFCHANNEL_SEND_ACTION_SUCCESS: 761 res = P2P_SEND_ACTION_SUCCESS; 762 break; 763 case OFFCHANNEL_SEND_ACTION_NO_ACK: 764 res = P2P_SEND_ACTION_NO_ACK; 765 break; 766 case OFFCHANNEL_SEND_ACTION_FAILED: 767 res = P2P_SEND_ACTION_FAILED; 768 break; 769 } 770 771 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 772 773 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 774 wpa_s->pending_pd_before_join && 775 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 776 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 777 wpa_s->p2p_fallback_to_go_neg) { 778 wpa_s->pending_pd_before_join = 0; 779 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 780 "during p2p_connect-auto"); 781 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 782 return; 783 } 784} 785 786 787static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 788 const u8 *src, const u8 *bssid, const u8 *buf, 789 size_t len, unsigned int wait_time) 790{ 791 struct wpa_supplicant *wpa_s = ctx; 792 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 793 wait_time, 794 wpas_p2p_send_action_tx_status, 1); 795} 796 797 798static void wpas_send_action_done(void *ctx) 799{ 800 struct wpa_supplicant *wpa_s = ctx; 801 offchannel_send_action_done(wpa_s); 802} 803 804 805static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 806 struct p2p_go_neg_results *params) 807{ 808 if (wpa_s->go_params == NULL) { 809 wpa_s->go_params = os_malloc(sizeof(*params)); 810 if (wpa_s->go_params == NULL) 811 return -1; 812 } 813 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 814 return 0; 815} 816 817 818static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 819 struct p2p_go_neg_results *res) 820{ 821 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, 822 MAC2STR(res->peer_interface_addr)); 823 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 824 res->ssid, res->ssid_len); 825 wpa_supplicant_ap_deinit(wpa_s); 826 wpas_copy_go_neg_results(wpa_s, res); 827 if (res->wps_method == WPS_PBC) 828 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 829 else { 830 u16 dev_pw_id = DEV_PW_DEFAULT; 831 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 832 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 833 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 834 wpa_s->p2p_pin, 1, dev_pw_id); 835 } 836} 837 838 839static void p2p_go_configured(void *ctx, void *data) 840{ 841 struct wpa_supplicant *wpa_s = ctx; 842 struct p2p_go_neg_results *params = data; 843 struct wpa_ssid *ssid; 844 int network_id = -1; 845 846 ssid = wpa_s->current_ssid; 847 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 848 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 849 if (wpa_s->global->p2p_group_formation == wpa_s) 850 wpa_s->global->p2p_group_formation = NULL; 851 if (os_strlen(params->passphrase) > 0) { 852 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 853 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 854 "go_dev_addr=" MACSTR "%s", wpa_s->ifname, 855 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 856 ssid->frequency, params->passphrase, 857 MAC2STR(wpa_s->global->p2p_dev_addr), 858 params->persistent_group ? " [PERSISTENT]" : 859 ""); 860 } else { 861 char psk[65]; 862 wpa_snprintf_hex(psk, sizeof(psk), params->psk, 863 sizeof(params->psk)); 864 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 865 "%s GO ssid=\"%s\" freq=%d psk=%s " 866 "go_dev_addr=" MACSTR "%s", wpa_s->ifname, 867 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 868 ssid->frequency, psk, 869 MAC2STR(wpa_s->global->p2p_dev_addr), 870 params->persistent_group ? " [PERSISTENT]" : 871 ""); 872 } 873 874 if (params->persistent_group) 875 network_id = wpas_p2p_store_persistent_group( 876 wpa_s->parent, ssid, 877 wpa_s->global->p2p_dev_addr); 878 if (network_id < 0) 879 network_id = ssid->id; 880 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 881 wpas_p2p_cross_connect_setup(wpa_s); 882 wpas_p2p_set_group_idle_timeout(wpa_s); 883 return; 884 } 885 886 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 887 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 888 params->peer_interface_addr)) { 889 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 890 "filtering"); 891 return; 892 } 893 if (params->wps_method == WPS_PBC) 894 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 895 params->peer_device_addr); 896 else if (wpa_s->p2p_pin[0]) 897 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 898 wpa_s->p2p_pin, NULL, 0, 0); 899 os_free(wpa_s->go_params); 900 wpa_s->go_params = NULL; 901} 902 903 904static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 905 struct p2p_go_neg_results *params, 906 int group_formation) 907{ 908 struct wpa_ssid *ssid; 909 910 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 911 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 912 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 913 "results"); 914 return; 915 } 916 917 ssid = wpa_config_add_network(wpa_s->conf); 918 if (ssid == NULL) { 919 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 920 return; 921 } 922 923 wpa_s->show_group_started = 0; 924 925 wpa_config_set_network_defaults(ssid); 926 ssid->temporary = 1; 927 ssid->p2p_group = 1; 928 ssid->p2p_persistent_group = params->persistent_group; 929 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 930 WPAS_MODE_P2P_GO; 931 ssid->frequency = params->freq; 932 ssid->ht40 = params->ht40; 933 ssid->ssid = os_zalloc(params->ssid_len + 1); 934 if (ssid->ssid) { 935 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 936 ssid->ssid_len = params->ssid_len; 937 } 938 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 939 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 940 ssid->proto = WPA_PROTO_RSN; 941 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 942 if (os_strlen(params->passphrase) > 0) { 943 ssid->passphrase = os_strdup(params->passphrase); 944 if (ssid->passphrase == NULL) { 945 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy " 946 "passphrase for GO"); 947 wpa_config_remove_network(wpa_s->conf, ssid->id); 948 return; 949 } 950 } else 951 ssid->passphrase = NULL; 952 ssid->psk_set = params->psk_set; 953 if (ssid->psk_set) 954 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 955 else if (ssid->passphrase) 956 wpa_config_update_psk(ssid); 957 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 958 959 wpa_s->ap_configured_cb = p2p_go_configured; 960 wpa_s->ap_configured_cb_ctx = wpa_s; 961 wpa_s->ap_configured_cb_data = wpa_s->go_params; 962 wpa_s->connect_without_scan = ssid; 963 wpa_s->reassociate = 1; 964 wpa_s->disconnected = 0; 965 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 966 "start GO)"); 967 wpa_supplicant_req_scan(wpa_s, 0, 0); 968} 969 970 971static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 972 const struct wpa_supplicant *src) 973{ 974 struct wpa_config *d; 975 const struct wpa_config *s; 976 977 d = dst->conf; 978 s = src->conf; 979 980#define C(n) if (s->n) d->n = os_strdup(s->n) 981 C(device_name); 982 C(manufacturer); 983 C(model_name); 984 C(model_number); 985 C(serial_number); 986 C(config_methods); 987#undef C 988 989 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 990 os_memcpy(d->sec_device_type, s->sec_device_type, 991 sizeof(d->sec_device_type)); 992 d->num_sec_device_types = s->num_sec_device_types; 993 994 d->p2p_group_idle = s->p2p_group_idle; 995 d->p2p_intra_bss = s->p2p_intra_bss; 996 d->persistent_reconnect = s->persistent_reconnect; 997 d->max_num_sta = s->max_num_sta; 998 d->pbc_in_m1 = s->pbc_in_m1; 999 d->ignore_old_scan_res = s->ignore_old_scan_res; 1000} 1001 1002 1003static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 1004 enum wpa_driver_if_type type) 1005{ 1006 char ifname[120], force_ifname[120]; 1007 1008 if (wpa_s->pending_interface_name[0]) { 1009 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 1010 "- skip creation of a new one"); 1011 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 1012 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 1013 "unknown?! ifname='%s'", 1014 wpa_s->pending_interface_name); 1015 return -1; 1016 } 1017 return 0; 1018 } 1019 1020 os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, 1021 wpa_s->p2p_group_idx); 1022 if (os_strlen(ifname) >= IFNAMSIZ && 1023 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 1024 /* Try to avoid going over the IFNAMSIZ length limit */ 1025 os_snprintf(ifname, sizeof(ifname), "p2p-%d", 1026 wpa_s->p2p_group_idx); 1027 } 1028 force_ifname[0] = '\0'; 1029 1030 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 1031 ifname); 1032 wpa_s->p2p_group_idx++; 1033 1034 wpa_s->pending_interface_type = type; 1035 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 1036 wpa_s->pending_interface_addr, NULL) < 0) { 1037 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 1038 "interface"); 1039 return -1; 1040 } 1041 1042 if (force_ifname[0]) { 1043 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 1044 force_ifname); 1045 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 1046 sizeof(wpa_s->pending_interface_name)); 1047 } else 1048 os_strlcpy(wpa_s->pending_interface_name, ifname, 1049 sizeof(wpa_s->pending_interface_name)); 1050 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 1051 MACSTR, wpa_s->pending_interface_name, 1052 MAC2STR(wpa_s->pending_interface_addr)); 1053 1054 return 0; 1055} 1056 1057 1058static void wpas_p2p_remove_pending_group_interface( 1059 struct wpa_supplicant *wpa_s) 1060{ 1061 if (!wpa_s->pending_interface_name[0] || 1062 is_zero_ether_addr(wpa_s->pending_interface_addr)) 1063 return; /* No pending virtual interface */ 1064 1065 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 1066 wpa_s->pending_interface_name); 1067 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 1068 wpa_s->pending_interface_name); 1069 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1070 wpa_s->pending_interface_name[0] = '\0'; 1071} 1072 1073 1074static struct wpa_supplicant * 1075wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 1076{ 1077 struct wpa_interface iface; 1078 struct wpa_supplicant *group_wpa_s; 1079 1080 if (!wpa_s->pending_interface_name[0]) { 1081 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 1082 if (!wpas_p2p_create_iface(wpa_s)) 1083 return NULL; 1084 /* 1085 * Something has forced us to remove the pending interface; try 1086 * to create a new one and hope for the best that we will get 1087 * the same local address. 1088 */ 1089 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 1090 WPA_IF_P2P_CLIENT) < 0) 1091 return NULL; 1092 } 1093 1094 os_memset(&iface, 0, sizeof(iface)); 1095 iface.ifname = wpa_s->pending_interface_name; 1096 iface.driver = wpa_s->driver->name; 1097 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 1098 iface.driver_param = wpa_s->conf->driver_param; 1099 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 1100 if (group_wpa_s == NULL) { 1101 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 1102 "wpa_supplicant interface"); 1103 return NULL; 1104 } 1105 wpa_s->pending_interface_name[0] = '\0'; 1106 group_wpa_s->parent = wpa_s; 1107 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 1108 P2P_GROUP_INTERFACE_CLIENT; 1109 wpa_s->global->p2p_group_formation = group_wpa_s; 1110 1111 wpas_p2p_clone_config(group_wpa_s, wpa_s); 1112 1113 return group_wpa_s; 1114} 1115 1116 1117static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 1118 void *timeout_ctx) 1119{ 1120 struct wpa_supplicant *wpa_s = eloop_ctx; 1121 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 1122 if (wpa_s->global->p2p) 1123 p2p_group_formation_failed(wpa_s->global->p2p); 1124 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1125 wpa_drv_p2p_group_formation_failed(wpa_s); 1126 wpas_group_formation_completed(wpa_s, 0); 1127} 1128 1129 1130void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 1131{ 1132 struct wpa_supplicant *wpa_s = ctx; 1133 1134 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1135 wpa_drv_cancel_remain_on_channel(wpa_s); 1136 wpa_s->off_channel_freq = 0; 1137 wpa_s->roc_waiting_drv_freq = 0; 1138 } 1139 1140 if (res->status) { 1141 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", 1142 res->status); 1143 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1144 wpas_p2p_remove_pending_group_interface(wpa_s); 1145 return; 1146 } 1147 1148 if (wpa_s->p2p_go_ht40) 1149 res->ht40 = 1; 1150 1151 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); 1152 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1153 1154 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 1155 struct wpa_ssid *ssid; 1156 ssid = wpa_config_get_network(wpa_s->conf, 1157 wpa_s->p2p_persistent_id); 1158 if (ssid && ssid->disabled == 2 && 1159 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 1160 size_t len = os_strlen(ssid->passphrase); 1161 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 1162 "on requested persistent group"); 1163 os_memcpy(res->passphrase, ssid->passphrase, len); 1164 res->passphrase[len] = '\0'; 1165 } 1166 } 1167 1168 if (wpa_s->create_p2p_iface) { 1169 struct wpa_supplicant *group_wpa_s = 1170 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1171 if (group_wpa_s == NULL) { 1172 wpas_p2p_remove_pending_group_interface(wpa_s); 1173 return; 1174 } 1175 if (group_wpa_s != wpa_s) { 1176 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1177 sizeof(group_wpa_s->p2p_pin)); 1178 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1179 } 1180 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1181 wpa_s->pending_interface_name[0] = '\0'; 1182 group_wpa_s->p2p_in_provisioning = 1; 1183 1184 if (res->role_go) 1185 wpas_start_wps_go(group_wpa_s, res, 1); 1186 else 1187 wpas_start_wps_enrollee(group_wpa_s, res); 1188 } else { 1189 wpa_s->p2p_in_provisioning = 1; 1190 wpa_s->global->p2p_group_formation = wpa_s; 1191 1192 if (res->role_go) 1193 wpas_start_wps_go(wpa_s, res, 1); 1194 else 1195 wpas_start_wps_enrollee(ctx, res); 1196 } 1197 1198 wpa_s->p2p_long_listen = 0; 1199 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1200 1201 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1202 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1203 (res->peer_config_timeout % 100) * 10000, 1204 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1205} 1206 1207 1208void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1209{ 1210 struct wpa_supplicant *wpa_s = ctx; 1211 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1212 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1213 1214 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1215} 1216 1217 1218void wpas_dev_found(void *ctx, const u8 *addr, 1219 const struct p2p_peer_info *info, 1220 int new_device) 1221{ 1222#ifndef CONFIG_NO_STDOUT_DEBUG 1223 struct wpa_supplicant *wpa_s = ctx; 1224 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1225#define WFD_DEV_INFO_SIZE 9 1226 char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1]; 1227 os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex)); 1228#ifdef CONFIG_WIFI_DISPLAY 1229 if (info->wfd_subelems) { 1230 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex), 1231 wpabuf_head(info->wfd_subelems), 1232 WFD_DEV_INFO_SIZE); 1233 } 1234#endif /* CONFIG_WIFI_DISPLAY */ 1235 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1236 " p2p_dev_addr=" MACSTR 1237 " pri_dev_type=%s name='%s' config_methods=0x%x " 1238 "dev_capab=0x%x group_capab=0x%x%s%s", 1239 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1240 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1241 sizeof(devtype)), 1242 info->device_name, info->config_methods, 1243 info->dev_capab, info->group_capab, 1244 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex); 1245#endif /* CONFIG_NO_STDOUT_DEBUG */ 1246 1247 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1248} 1249 1250 1251static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1252{ 1253 struct wpa_supplicant *wpa_s = ctx; 1254 1255 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1256 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1257 1258 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1259} 1260 1261 1262static int wpas_start_listen(void *ctx, unsigned int freq, 1263 unsigned int duration, 1264 const struct wpabuf *probe_resp_ie) 1265{ 1266 struct wpa_supplicant *wpa_s = ctx; 1267 1268 wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); 1269 1270 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1271 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1272 "report received Probe Request frames"); 1273 return -1; 1274 } 1275 1276 wpa_s->pending_listen_freq = freq; 1277 wpa_s->pending_listen_duration = duration; 1278 1279 if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { 1280 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1281 "to remain on channel (%u MHz) for Listen " 1282 "state", freq); 1283 wpa_s->pending_listen_freq = 0; 1284 return -1; 1285 } 1286 wpa_s->off_channel_freq = 0; 1287 wpa_s->roc_waiting_drv_freq = freq; 1288 1289 return 0; 1290} 1291 1292 1293static void wpas_stop_listen(void *ctx) 1294{ 1295 struct wpa_supplicant *wpa_s = ctx; 1296 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1297 wpa_drv_cancel_remain_on_channel(wpa_s); 1298 wpa_s->off_channel_freq = 0; 1299 wpa_s->roc_waiting_drv_freq = 0; 1300 } 1301 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1302 wpa_drv_probe_req_report(wpa_s, 0); 1303} 1304 1305 1306static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1307{ 1308 struct wpa_supplicant *wpa_s = ctx; 1309 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1310} 1311 1312 1313/* 1314 * DNS Header section is used only to calculate compression pointers, so the 1315 * contents of this data does not matter, but the length needs to be reserved 1316 * in the virtual packet. 1317 */ 1318#define DNS_HEADER_LEN 12 1319 1320/* 1321 * 27-octet in-memory packet from P2P specification containing two implied 1322 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN 1323 */ 1324#define P2P_SD_IN_MEMORY_LEN 27 1325 1326static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start, 1327 u8 **spos, const u8 *end) 1328{ 1329 while (*spos < end) { 1330 u8 val = ((*spos)[0] & 0xc0) >> 6; 1331 int len; 1332 1333 if (val == 1 || val == 2) { 1334 /* These are reserved values in RFC 1035 */ 1335 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1336 "sequence starting with 0x%x", val); 1337 return -1; 1338 } 1339 1340 if (val == 3) { 1341 u16 offset; 1342 u8 *spos_tmp; 1343 1344 /* Offset */ 1345 if (*spos + 2 > end) { 1346 wpa_printf(MSG_DEBUG, "P2P: No room for full " 1347 "DNS offset field"); 1348 return -1; 1349 } 1350 1351 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1]; 1352 if (offset >= *spos - start) { 1353 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS " 1354 "pointer offset %u", offset); 1355 return -1; 1356 } 1357 1358 (*spos) += 2; 1359 spos_tmp = start + offset; 1360 return p2p_sd_dns_uncompress_label(upos, uend, start, 1361 &spos_tmp, 1362 *spos - 2); 1363 } 1364 1365 /* Label */ 1366 len = (*spos)[0] & 0x3f; 1367 if (len == 0) 1368 return 0; 1369 1370 (*spos)++; 1371 if (*spos + len > end) { 1372 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1373 "sequence - no room for label with length " 1374 "%u", len); 1375 return -1; 1376 } 1377 1378 if (*upos + len + 2 > uend) 1379 return -2; 1380 1381 os_memcpy(*upos, *spos, len); 1382 *spos += len; 1383 *upos += len; 1384 (*upos)[0] = '.'; 1385 (*upos)++; 1386 (*upos)[0] = '\0'; 1387 } 1388 1389 return 0; 1390} 1391 1392 1393/* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet. 1394 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is 1395 * not large enough */ 1396static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg, 1397 size_t msg_len, size_t offset) 1398{ 1399 /* 27-octet in-memory packet from P2P specification */ 1400 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01" 1401 "\x04_udp\xC0\x11\x00\x0C\x00\x01"; 1402 u8 *tmp, *end, *spos; 1403 char *upos, *uend; 1404 int ret = 0; 1405 1406 if (buf_len < 2) 1407 return -1; 1408 if (offset > msg_len) 1409 return -1; 1410 1411 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len); 1412 if (tmp == NULL) 1413 return -1; 1414 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN; 1415 end = spos + msg_len; 1416 spos += offset; 1417 1418 os_memset(tmp, 0, DNS_HEADER_LEN); 1419 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN); 1420 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len); 1421 1422 upos = buf; 1423 uend = buf + buf_len; 1424 1425 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end); 1426 if (ret) { 1427 os_free(tmp); 1428 return ret; 1429 } 1430 1431 if (upos == buf) { 1432 upos[0] = '.'; 1433 upos[1] = '\0'; 1434 } else if (upos[-1] == '.') 1435 upos[-1] = '\0'; 1436 1437 os_free(tmp); 1438 return 0; 1439} 1440 1441 1442static struct p2p_srv_bonjour * 1443wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1444 const struct wpabuf *query) 1445{ 1446 struct p2p_srv_bonjour *bsrv; 1447 size_t len; 1448 1449 len = wpabuf_len(query); 1450 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1451 struct p2p_srv_bonjour, list) { 1452 if (len == wpabuf_len(bsrv->query) && 1453 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1454 len) == 0) 1455 return bsrv; 1456 } 1457 return NULL; 1458} 1459 1460 1461static struct p2p_srv_upnp * 1462wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 1463 const char *service) 1464{ 1465 struct p2p_srv_upnp *usrv; 1466 1467 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1468 struct p2p_srv_upnp, list) { 1469 if (version == usrv->version && 1470 os_strcmp(service, usrv->service) == 0) 1471 return usrv; 1472 } 1473 return NULL; 1474} 1475 1476 1477static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 1478 u8 srv_trans_id) 1479{ 1480 u8 *len_pos; 1481 1482 if (wpabuf_tailroom(resp) < 5) 1483 return; 1484 1485 /* Length (to be filled) */ 1486 len_pos = wpabuf_put(resp, 2); 1487 wpabuf_put_u8(resp, srv_proto); 1488 wpabuf_put_u8(resp, srv_trans_id); 1489 /* Status Code */ 1490 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 1491 /* Response Data: empty */ 1492 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1493} 1494 1495 1496static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 1497 struct wpabuf *resp, u8 srv_trans_id) 1498{ 1499 struct p2p_srv_bonjour *bsrv; 1500 u8 *len_pos; 1501 1502 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 1503 1504 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1505 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1506 return; 1507 } 1508 1509 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1510 struct p2p_srv_bonjour, list) { 1511 if (wpabuf_tailroom(resp) < 1512 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 1513 return; 1514 /* Length (to be filled) */ 1515 len_pos = wpabuf_put(resp, 2); 1516 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1517 wpabuf_put_u8(resp, srv_trans_id); 1518 /* Status Code */ 1519 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1520 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1521 wpabuf_head(bsrv->resp), 1522 wpabuf_len(bsrv->resp)); 1523 /* Response Data */ 1524 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1525 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1526 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1527 2); 1528 } 1529} 1530 1531 1532static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query, 1533 size_t query_len) 1534{ 1535 char str_rx[256], str_srv[256]; 1536 1537 if (query_len < 3 || wpabuf_len(bsrv->query) < 3) 1538 return 0; /* Too short to include DNS Type and Version */ 1539 if (os_memcmp(query + query_len - 3, 1540 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3, 1541 3) != 0) 1542 return 0; /* Mismatch in DNS Type or Version */ 1543 if (query_len == wpabuf_len(bsrv->query) && 1544 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0) 1545 return 1; /* Binary match */ 1546 1547 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3, 1548 0)) 1549 return 0; /* Failed to uncompress query */ 1550 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv), 1551 wpabuf_head(bsrv->query), 1552 wpabuf_len(bsrv->query) - 3, 0)) 1553 return 0; /* Failed to uncompress service */ 1554 1555 return os_strcmp(str_rx, str_srv) == 0; 1556} 1557 1558 1559static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 1560 struct wpabuf *resp, u8 srv_trans_id, 1561 const u8 *query, size_t query_len) 1562{ 1563 struct p2p_srv_bonjour *bsrv; 1564 u8 *len_pos; 1565 int matches = 0; 1566 1567 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 1568 query, query_len); 1569 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1570 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1571 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 1572 srv_trans_id); 1573 return; 1574 } 1575 1576 if (query_len == 0) { 1577 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1578 return; 1579 } 1580 1581 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1582 struct p2p_srv_bonjour, list) { 1583 if (!match_bonjour_query(bsrv, query, query_len)) 1584 continue; 1585 1586 if (wpabuf_tailroom(resp) < 1587 5 + query_len + wpabuf_len(bsrv->resp)) 1588 return; 1589 1590 matches++; 1591 1592 /* Length (to be filled) */ 1593 len_pos = wpabuf_put(resp, 2); 1594 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1595 wpabuf_put_u8(resp, srv_trans_id); 1596 1597 /* Status Code */ 1598 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1599 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1600 wpabuf_head(bsrv->resp), 1601 wpabuf_len(bsrv->resp)); 1602 1603 /* Response Data */ 1604 wpabuf_put_data(resp, query, query_len); /* Key */ 1605 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1606 1607 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1608 } 1609 1610 if (matches == 0) { 1611 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 1612 "available"); 1613 if (wpabuf_tailroom(resp) < 5) 1614 return; 1615 1616 /* Length (to be filled) */ 1617 len_pos = wpabuf_put(resp, 2); 1618 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1619 wpabuf_put_u8(resp, srv_trans_id); 1620 1621 /* Status Code */ 1622 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1623 /* Response Data: empty */ 1624 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1625 2); 1626 } 1627} 1628 1629 1630static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 1631 struct wpabuf *resp, u8 srv_trans_id) 1632{ 1633 struct p2p_srv_upnp *usrv; 1634 u8 *len_pos; 1635 1636 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 1637 1638 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1639 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1640 return; 1641 } 1642 1643 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1644 struct p2p_srv_upnp, list) { 1645 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 1646 return; 1647 1648 /* Length (to be filled) */ 1649 len_pos = wpabuf_put(resp, 2); 1650 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1651 wpabuf_put_u8(resp, srv_trans_id); 1652 1653 /* Status Code */ 1654 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1655 /* Response Data */ 1656 wpabuf_put_u8(resp, usrv->version); 1657 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1658 usrv->service); 1659 wpabuf_put_str(resp, usrv->service); 1660 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1661 2); 1662 } 1663} 1664 1665 1666static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 1667 struct wpabuf *resp, u8 srv_trans_id, 1668 const u8 *query, size_t query_len) 1669{ 1670 struct p2p_srv_upnp *usrv; 1671 u8 *len_pos; 1672 u8 version; 1673 char *str; 1674 int count = 0; 1675 1676 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 1677 query, query_len); 1678 1679 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1680 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1681 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 1682 srv_trans_id); 1683 return; 1684 } 1685 1686 if (query_len == 0) { 1687 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1688 return; 1689 } 1690 1691 if (wpabuf_tailroom(resp) < 5) 1692 return; 1693 1694 /* Length (to be filled) */ 1695 len_pos = wpabuf_put(resp, 2); 1696 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1697 wpabuf_put_u8(resp, srv_trans_id); 1698 1699 version = query[0]; 1700 str = os_malloc(query_len); 1701 if (str == NULL) 1702 return; 1703 os_memcpy(str, query + 1, query_len - 1); 1704 str[query_len - 1] = '\0'; 1705 1706 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1707 struct p2p_srv_upnp, list) { 1708 if (version != usrv->version) 1709 continue; 1710 1711 if (os_strcmp(str, "ssdp:all") != 0 && 1712 os_strstr(usrv->service, str) == NULL) 1713 continue; 1714 1715 if (wpabuf_tailroom(resp) < 2) 1716 break; 1717 if (count == 0) { 1718 /* Status Code */ 1719 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1720 /* Response Data */ 1721 wpabuf_put_u8(resp, version); 1722 } else 1723 wpabuf_put_u8(resp, ','); 1724 1725 count++; 1726 1727 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1728 usrv->service); 1729 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 1730 break; 1731 wpabuf_put_str(resp, usrv->service); 1732 } 1733 os_free(str); 1734 1735 if (count == 0) { 1736 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 1737 "available"); 1738 /* Status Code */ 1739 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1740 /* Response Data: empty */ 1741 } 1742 1743 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1744} 1745 1746 1747#ifdef CONFIG_WIFI_DISPLAY 1748static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s, 1749 struct wpabuf *resp, u8 srv_trans_id, 1750 const u8 *query, size_t query_len) 1751{ 1752 const u8 *pos; 1753 u8 role; 1754 u8 *len_pos; 1755 1756 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len); 1757 1758 if (!wpa_s->global->wifi_display) { 1759 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available"); 1760 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY, 1761 srv_trans_id); 1762 return; 1763 } 1764 1765 if (query_len < 1) { 1766 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device " 1767 "Role"); 1768 return; 1769 } 1770 1771 if (wpabuf_tailroom(resp) < 5) 1772 return; 1773 1774 pos = query; 1775 role = *pos++; 1776 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role); 1777 1778 /* TODO: role specific handling */ 1779 1780 /* Length (to be filled) */ 1781 len_pos = wpabuf_put(resp, 2); 1782 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY); 1783 wpabuf_put_u8(resp, srv_trans_id); 1784 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */ 1785 1786 while (pos < query + query_len) { 1787 if (*pos < MAX_WFD_SUBELEMS && 1788 wpa_s->global->wfd_subelem[*pos] && 1789 wpabuf_tailroom(resp) >= 1790 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) { 1791 wpa_printf(MSG_DEBUG, "P2P: Add WSD response " 1792 "subelement %u", *pos); 1793 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]); 1794 } 1795 pos++; 1796 } 1797 1798 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1799} 1800#endif /* CONFIG_WIFI_DISPLAY */ 1801 1802 1803void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 1804 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 1805{ 1806 struct wpa_supplicant *wpa_s = ctx; 1807 const u8 *pos = tlvs; 1808 const u8 *end = tlvs + tlvs_len; 1809 const u8 *tlv_end; 1810 u16 slen; 1811 struct wpabuf *resp; 1812 u8 srv_proto, srv_trans_id; 1813 size_t buf_len; 1814 char *buf; 1815 1816 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 1817 tlvs, tlvs_len); 1818 buf_len = 2 * tlvs_len + 1; 1819 buf = os_malloc(buf_len); 1820 if (buf) { 1821 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1822 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 1823 MACSTR " %u %u %s", 1824 freq, MAC2STR(sa), dialog_token, update_indic, 1825 buf); 1826 os_free(buf); 1827 } 1828 1829 if (wpa_s->p2p_sd_over_ctrl_iface) { 1830 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1831 update_indic, tlvs, tlvs_len); 1832 return; /* to be processed by an external program */ 1833 } 1834 1835 resp = wpabuf_alloc(10000); 1836 if (resp == NULL) 1837 return; 1838 1839 while (pos + 1 < end) { 1840 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 1841 slen = WPA_GET_LE16(pos); 1842 pos += 2; 1843 if (pos + slen > end || slen < 2) { 1844 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 1845 "length"); 1846 wpabuf_free(resp); 1847 return; 1848 } 1849 tlv_end = pos + slen; 1850 1851 srv_proto = *pos++; 1852 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1853 srv_proto); 1854 srv_trans_id = *pos++; 1855 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1856 srv_trans_id); 1857 1858 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 1859 pos, tlv_end - pos); 1860 1861 1862 if (wpa_s->force_long_sd) { 1863 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 1864 "response"); 1865 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1866 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1867 goto done; 1868 } 1869 1870 switch (srv_proto) { 1871 case P2P_SERV_ALL_SERVICES: 1872 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 1873 "for all services"); 1874 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 1875 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1876 wpa_printf(MSG_DEBUG, "P2P: No service " 1877 "discovery protocols available"); 1878 wpas_sd_add_proto_not_avail( 1879 resp, P2P_SERV_ALL_SERVICES, 1880 srv_trans_id); 1881 break; 1882 } 1883 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1884 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1885 break; 1886 case P2P_SERV_BONJOUR: 1887 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 1888 pos, tlv_end - pos); 1889 break; 1890 case P2P_SERV_UPNP: 1891 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 1892 pos, tlv_end - pos); 1893 break; 1894#ifdef CONFIG_WIFI_DISPLAY 1895 case P2P_SERV_WIFI_DISPLAY: 1896 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id, 1897 pos, tlv_end - pos); 1898 break; 1899#endif /* CONFIG_WIFI_DISPLAY */ 1900 default: 1901 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 1902 "protocol %u", srv_proto); 1903 wpas_sd_add_proto_not_avail(resp, srv_proto, 1904 srv_trans_id); 1905 break; 1906 } 1907 1908 pos = tlv_end; 1909 } 1910 1911done: 1912 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1913 update_indic, tlvs, tlvs_len); 1914 1915 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 1916 1917 wpabuf_free(resp); 1918} 1919 1920 1921void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 1922 const u8 *tlvs, size_t tlvs_len) 1923{ 1924 struct wpa_supplicant *wpa_s = ctx; 1925 const u8 *pos = tlvs; 1926 const u8 *end = tlvs + tlvs_len; 1927 const u8 *tlv_end; 1928 u16 slen; 1929 size_t buf_len; 1930 char *buf; 1931 1932 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 1933 tlvs, tlvs_len); 1934 if (tlvs_len > 1500) { 1935 /* TODO: better way for handling this */ 1936 wpa_msg_ctrl(wpa_s, MSG_INFO, 1937 P2P_EVENT_SERV_DISC_RESP MACSTR 1938 " %u <long response: %u bytes>", 1939 MAC2STR(sa), update_indic, 1940 (unsigned int) tlvs_len); 1941 } else { 1942 buf_len = 2 * tlvs_len + 1; 1943 buf = os_malloc(buf_len); 1944 if (buf) { 1945 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1946 wpa_msg_ctrl(wpa_s, MSG_INFO, 1947 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 1948 MAC2STR(sa), update_indic, buf); 1949 os_free(buf); 1950 } 1951 } 1952 1953 while (pos < end) { 1954 u8 srv_proto, srv_trans_id, status; 1955 1956 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 1957 slen = WPA_GET_LE16(pos); 1958 pos += 2; 1959 if (pos + slen > end || slen < 3) { 1960 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 1961 "length"); 1962 return; 1963 } 1964 tlv_end = pos + slen; 1965 1966 srv_proto = *pos++; 1967 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1968 srv_proto); 1969 srv_trans_id = *pos++; 1970 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1971 srv_trans_id); 1972 status = *pos++; 1973 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 1974 status); 1975 1976 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 1977 pos, tlv_end - pos); 1978 1979 pos = tlv_end; 1980 } 1981 1982 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 1983} 1984 1985 1986u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 1987 const struct wpabuf *tlvs) 1988{ 1989 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1990 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); 1991 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1992 return 0; 1993 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 1994} 1995 1996 1997u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 1998 u8 version, const char *query) 1999{ 2000 struct wpabuf *tlvs; 2001 u64 ret; 2002 2003 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 2004 if (tlvs == NULL) 2005 return 0; 2006 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 2007 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 2008 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 2009 wpabuf_put_u8(tlvs, version); 2010 wpabuf_put_str(tlvs, query); 2011 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 2012 wpabuf_free(tlvs); 2013 return ret; 2014} 2015 2016 2017#ifdef CONFIG_WIFI_DISPLAY 2018 2019static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst, 2020 const struct wpabuf *tlvs) 2021{ 2022 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2023 return 0; 2024 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2025 return 0; 2026 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs); 2027} 2028 2029 2030#define MAX_WFD_SD_SUBELEMS 20 2031 2032static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role, 2033 const char *subelems) 2034{ 2035 u8 *len; 2036 const char *pos; 2037 int val; 2038 int count = 0; 2039 2040 len = wpabuf_put(tlvs, 2); 2041 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */ 2042 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */ 2043 2044 wpabuf_put_u8(tlvs, role); 2045 2046 pos = subelems; 2047 while (*pos) { 2048 val = atoi(pos); 2049 if (val >= 0 && val < 256) { 2050 wpabuf_put_u8(tlvs, val); 2051 count++; 2052 if (count == MAX_WFD_SD_SUBELEMS) 2053 break; 2054 } 2055 pos = os_strchr(pos + 1, ','); 2056 if (pos == NULL) 2057 break; 2058 pos++; 2059 } 2060 2061 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2); 2062} 2063 2064 2065u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s, 2066 const u8 *dst, const char *role) 2067{ 2068 struct wpabuf *tlvs; 2069 u64 ret; 2070 const char *subelems; 2071 u8 id = 1; 2072 2073 subelems = os_strchr(role, ' '); 2074 if (subelems == NULL) 2075 return 0; 2076 subelems++; 2077 2078 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS)); 2079 if (tlvs == NULL) 2080 return 0; 2081 2082 if (os_strstr(role, "[source]")) 2083 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems); 2084 if (os_strstr(role, "[pri-sink]")) 2085 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems); 2086 if (os_strstr(role, "[sec-sink]")) 2087 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems); 2088 if (os_strstr(role, "[source+sink]")) 2089 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems); 2090 2091 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs); 2092 wpabuf_free(tlvs); 2093 return ret; 2094} 2095 2096#endif /* CONFIG_WIFI_DISPLAY */ 2097 2098 2099int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 2100{ 2101 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2102 return wpa_drv_p2p_sd_cancel_request(wpa_s, req); 2103 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2104 return -1; 2105 return p2p_sd_cancel_request(wpa_s->global->p2p, 2106 (void *) (uintptr_t) req); 2107} 2108 2109 2110void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 2111 const u8 *dst, u8 dialog_token, 2112 const struct wpabuf *resp_tlvs) 2113{ 2114 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2115 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, 2116 resp_tlvs); 2117 return; 2118 } 2119 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2120 return; 2121 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 2122 resp_tlvs); 2123} 2124 2125#ifdef ANDROID_P2P 2126void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action) 2127#else 2128void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 2129#endif 2130{ 2131 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2132 wpa_drv_p2p_service_update(wpa_s); 2133 return; 2134 } 2135 if (wpa_s->global->p2p) 2136#ifdef ANDROID_P2P 2137 p2p_sd_service_update(wpa_s->global->p2p, action); 2138#else 2139 p2p_sd_service_update(wpa_s->global->p2p); 2140#endif 2141} 2142 2143 2144static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 2145{ 2146 dl_list_del(&bsrv->list); 2147 wpabuf_free(bsrv->query); 2148 wpabuf_free(bsrv->resp); 2149 os_free(bsrv); 2150} 2151 2152 2153static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 2154{ 2155 dl_list_del(&usrv->list); 2156 os_free(usrv->service); 2157 os_free(usrv); 2158} 2159 2160 2161void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 2162{ 2163 struct p2p_srv_bonjour *bsrv, *bn; 2164 struct p2p_srv_upnp *usrv, *un; 2165 2166 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 2167 struct p2p_srv_bonjour, list) 2168 wpas_p2p_srv_bonjour_free(bsrv); 2169 2170 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 2171 struct p2p_srv_upnp, list) 2172 wpas_p2p_srv_upnp_free(usrv); 2173 2174#ifdef ANDROID_P2P 2175 wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH); 2176#else 2177 wpas_p2p_sd_service_update(wpa_s); 2178#endif 2179} 2180 2181 2182int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 2183 struct wpabuf *query, struct wpabuf *resp) 2184{ 2185 struct p2p_srv_bonjour *bsrv; 2186 2187 bsrv = os_zalloc(sizeof(*bsrv)); 2188 if (bsrv == NULL) 2189 return -1; 2190 bsrv->query = query; 2191 bsrv->resp = resp; 2192 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 2193 2194#ifdef ANDROID_P2P 2195 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 2196#else 2197 wpas_p2p_sd_service_update(wpa_s); 2198#endif 2199 return 0; 2200} 2201 2202 2203int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 2204 const struct wpabuf *query) 2205{ 2206 struct p2p_srv_bonjour *bsrv; 2207 2208 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 2209 if (bsrv == NULL) 2210 return -1; 2211 wpas_p2p_srv_bonjour_free(bsrv); 2212#ifdef ANDROID_P2P 2213 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 2214#else 2215 wpas_p2p_sd_service_update(wpa_s); 2216#endif 2217 return 0; 2218} 2219 2220 2221int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 2222 const char *service) 2223{ 2224 struct p2p_srv_upnp *usrv; 2225 2226 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 2227 return 0; /* Already listed */ 2228 usrv = os_zalloc(sizeof(*usrv)); 2229 if (usrv == NULL) 2230 return -1; 2231 usrv->version = version; 2232 usrv->service = os_strdup(service); 2233 if (usrv->service == NULL) { 2234 os_free(usrv); 2235 return -1; 2236 } 2237 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 2238 2239#ifdef ANDROID_P2P 2240 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 2241#else 2242 wpas_p2p_sd_service_update(wpa_s); 2243#endif 2244 return 0; 2245} 2246 2247 2248int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 2249 const char *service) 2250{ 2251 struct p2p_srv_upnp *usrv; 2252 2253 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 2254 if (usrv == NULL) 2255 return -1; 2256 wpas_p2p_srv_upnp_free(usrv); 2257#ifdef ANDROID_P2P 2258 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 2259#else 2260 wpas_p2p_sd_service_update(wpa_s); 2261#endif 2262 return 0; 2263} 2264 2265 2266static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2267 const u8 *peer, const char *params, 2268 unsigned int generated_pin) 2269{ 2270 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", 2271 MAC2STR(peer), generated_pin, params); 2272} 2273 2274 2275static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2276 const u8 *peer, const char *params) 2277{ 2278 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", 2279 MAC2STR(peer), params); 2280} 2281 2282 2283void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2284 const u8 *dev_addr, const u8 *pri_dev_type, 2285 const char *dev_name, u16 supp_config_methods, 2286 u8 dev_capab, u8 group_capab, const u8 *group_id, 2287 size_t group_id_len) 2288{ 2289 struct wpa_supplicant *wpa_s = ctx; 2290 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2291 char params[300]; 2292 u8 empty_dev_type[8]; 2293 unsigned int generated_pin = 0; 2294 struct wpa_supplicant *group = NULL; 2295 2296 if (group_id) { 2297 for (group = wpa_s->global->ifaces; group; group = group->next) 2298 { 2299 struct wpa_ssid *s = group->current_ssid; 2300 if (s != NULL && 2301 s->mode == WPAS_MODE_P2P_GO && 2302 group_id_len - ETH_ALEN == s->ssid_len && 2303 os_memcmp(group_id + ETH_ALEN, s->ssid, 2304 s->ssid_len) == 0) 2305 break; 2306 } 2307 } 2308 2309 if (pri_dev_type == NULL) { 2310 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2311 pri_dev_type = empty_dev_type; 2312 } 2313 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2314 " pri_dev_type=%s name='%s' config_methods=0x%x " 2315 "dev_capab=0x%x group_capab=0x%x%s%s", 2316 MAC2STR(dev_addr), 2317 wps_dev_type_bin2str(pri_dev_type, devtype, 2318 sizeof(devtype)), 2319 dev_name, supp_config_methods, dev_capab, group_capab, 2320 group ? " group=" : "", 2321 group ? group->ifname : ""); 2322 params[sizeof(params) - 1] = '\0'; 2323 2324 if (config_methods & WPS_CONFIG_DISPLAY) { 2325 generated_pin = wps_generate_pin(); 2326 wpas_prov_disc_local_display(wpa_s, peer, params, 2327 generated_pin); 2328 } else if (config_methods & WPS_CONFIG_KEYPAD) 2329 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2330 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2331 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR 2332 "%s", MAC2STR(peer), params); 2333 2334 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2335 P2P_PROV_DISC_SUCCESS, 2336 config_methods, generated_pin); 2337} 2338 2339 2340void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2341{ 2342 struct wpa_supplicant *wpa_s = ctx; 2343 unsigned int generated_pin = 0; 2344 char params[20]; 2345 2346 if (wpa_s->pending_pd_before_join && 2347 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2348 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2349 wpa_s->pending_pd_before_join = 0; 2350 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2351 "join-existing-group operation"); 2352 wpas_p2p_join_start(wpa_s); 2353 return; 2354 } 2355 2356 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2357 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) 2358 os_snprintf(params, sizeof(params), " peer_go=%d", 2359 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2360 else 2361 params[0] = '\0'; 2362 2363 if (config_methods & WPS_CONFIG_DISPLAY) 2364 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2365 else if (config_methods & WPS_CONFIG_KEYPAD) { 2366 generated_pin = wps_generate_pin(); 2367 wpas_prov_disc_local_display(wpa_s, peer, params, 2368 generated_pin); 2369 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2370 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR 2371 "%s", MAC2STR(peer), params); 2372 2373 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2374 P2P_PROV_DISC_SUCCESS, 2375 config_methods, generated_pin); 2376} 2377 2378 2379static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2380 enum p2p_prov_disc_status status) 2381{ 2382 struct wpa_supplicant *wpa_s = ctx; 2383 2384 if (wpa_s->p2p_fallback_to_go_neg) { 2385 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2386 "failed - fall back to GO Negotiation"); 2387 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2388 return; 2389 } 2390 2391 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2392 wpa_s->pending_pd_before_join = 0; 2393 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2394 "join-existing-group operation (no ACK for PD " 2395 "Req attempts)"); 2396 wpas_p2p_join_start(wpa_s); 2397 return; 2398 } 2399 2400 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2401 " p2p_dev_addr=" MACSTR " status=%d", 2402 MAC2STR(peer), status); 2403 2404 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2405 status, 0, 0); 2406} 2407 2408 2409static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2410 const u8 *go_dev_addr, const u8 *ssid, 2411 size_t ssid_len, int *go, u8 *group_bssid, 2412 int *force_freq, int persistent_group) 2413{ 2414 struct wpa_supplicant *wpa_s = ctx; 2415 struct wpa_ssid *s; 2416 u8 cur_bssid[ETH_ALEN]; 2417 int res; 2418 struct wpa_supplicant *grp; 2419 2420 if (!persistent_group) { 2421 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2422 " to join an active group", MAC2STR(sa)); 2423 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2424 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2425 == 0 || 2426 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2427 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2428 "authorized invitation"); 2429 goto accept_inv; 2430 } 2431 /* 2432 * Do not accept the invitation automatically; notify user and 2433 * request approval. 2434 */ 2435 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2436 } 2437 2438 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2439 if (grp) { 2440 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2441 "running persistent group"); 2442 if (*go) 2443 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2444 goto accept_inv; 2445 } 2446 2447 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2448 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2449 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2450 "invitation to re-invoke a persistent group"); 2451 } else if (!wpa_s->conf->persistent_reconnect) 2452 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2453 2454 for (s = wpa_s->conf->ssid; s; s = s->next) { 2455 if (s->disabled == 2 && 2456 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2457 s->ssid_len == ssid_len && 2458 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2459 break; 2460 } 2461 2462 if (!s) { 2463 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2464 " requested reinvocation of an unknown group", 2465 MAC2STR(sa)); 2466 return P2P_SC_FAIL_UNKNOWN_GROUP; 2467 } 2468 2469 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2470 *go = 1; 2471 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2472 wpa_printf(MSG_DEBUG, "P2P: The only available " 2473 "interface is already in use - reject " 2474 "invitation"); 2475 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2476 } 2477 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2478 } else if (s->mode == WPAS_MODE_P2P_GO) { 2479 *go = 1; 2480 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2481 { 2482 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2483 "interface address for the group"); 2484 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2485 } 2486 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2487 ETH_ALEN); 2488 } 2489 2490accept_inv: 2491 wpas_p2p_set_own_freq_preference(wpa_s, 0); 2492 2493 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && 2494 wpa_s->assoc_freq) { 2495 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2496 "the channel we are already using"); 2497 *force_freq = wpa_s->assoc_freq; 2498 wpas_p2p_set_own_freq_preference(wpa_s, wpa_s->assoc_freq); 2499 } 2500 2501 res = wpa_drv_shared_freq(wpa_s); 2502 if (res > 0) { 2503 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2504 "with the channel we are already using on a " 2505 "shared interface"); 2506 *force_freq = res; 2507 wpas_p2p_set_own_freq_preference(wpa_s, res); 2508 } 2509 2510 return P2P_SC_SUCCESS; 2511} 2512 2513 2514static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2515 const u8 *ssid, size_t ssid_len, 2516 const u8 *go_dev_addr, u8 status, 2517 int op_freq) 2518{ 2519 struct wpa_supplicant *wpa_s = ctx; 2520 struct wpa_ssid *s; 2521 2522 for (s = wpa_s->conf->ssid; s; s = s->next) { 2523 if (s->disabled == 2 && 2524 s->ssid_len == ssid_len && 2525 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2526 break; 2527 } 2528 2529 if (status == P2P_SC_SUCCESS) { 2530 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2531 " was accepted; op_freq=%d MHz", 2532 MAC2STR(sa), op_freq); 2533 if (s) { 2534 int go = s->mode == WPAS_MODE_P2P_GO; 2535 wpas_p2p_group_add_persistent( 2536 wpa_s, s, go, go ? op_freq : 0, 0, NULL); 2537 } else if (bssid) { 2538 wpa_s->user_initiated_pd = 0; 2539 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2540 wpa_s->p2p_wps_method, 0); 2541 } 2542 return; 2543 } 2544 2545 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2546 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2547 " was rejected (status %u)", MAC2STR(sa), status); 2548 return; 2549 } 2550 2551 if (!s) { 2552 if (bssid) { 2553 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2554 "sa=" MACSTR " go_dev_addr=" MACSTR 2555 " bssid=" MACSTR " unknown-network", 2556 MAC2STR(sa), MAC2STR(go_dev_addr), 2557 MAC2STR(bssid)); 2558 } else { 2559 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2560 "sa=" MACSTR " go_dev_addr=" MACSTR 2561 " unknown-network", 2562 MAC2STR(sa), MAC2STR(go_dev_addr)); 2563 } 2564 return; 2565 } 2566 2567 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 2568 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" 2569 MACSTR " persistent=%d freq=%d", 2570 MAC2STR(sa), s->id, op_freq); 2571 } else { 2572 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" 2573 MACSTR " persistent=%d", MAC2STR(sa), s->id); 2574 } 2575} 2576 2577 2578static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 2579 struct wpa_ssid *ssid, 2580 const u8 *peer) 2581{ 2582 size_t i; 2583 2584 if (ssid == NULL) 2585 return; 2586 2587 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 2588 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer, 2589 ETH_ALEN) == 0) 2590 break; 2591 } 2592 if (i >= ssid->num_p2p_clients) { 2593 if (ssid->mode != WPAS_MODE_P2P_GO && 2594 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 2595 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 2596 "due to invitation result", ssid->id); 2597 wpas_notify_network_removed(wpa_s, ssid); 2598 wpa_config_remove_network(wpa_s->conf, ssid->id); 2599 return; 2600 } 2601 return; /* Peer not found in client list */ 2602 } 2603 2604 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 2605 "group %d client list due to invitation result", 2606 MAC2STR(peer), ssid->id); 2607 os_memmove(ssid->p2p_client_list + i * ETH_ALEN, 2608 ssid->p2p_client_list + (i + 1) * ETH_ALEN, 2609 (ssid->num_p2p_clients - i - 1) * ETH_ALEN); 2610 ssid->num_p2p_clients--; 2611#ifndef CONFIG_NO_CONFIG_WRITE 2612 if (wpa_s->parent->conf->update_config && 2613 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 2614 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 2615#endif /* CONFIG_NO_CONFIG_WRITE */ 2616} 2617 2618 2619static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 2620 const u8 *peer) 2621{ 2622 struct wpa_ssid *ssid; 2623 2624 wpa_s = wpa_s->global->p2p_invite_group; 2625 if (wpa_s == NULL) 2626 return; /* No known invitation group */ 2627 ssid = wpa_s->current_ssid; 2628 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 2629 !ssid->p2p_persistent_group) 2630 return; /* Not operating as a GO in persistent group */ 2631 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer, 2632 ssid->ssid, ssid->ssid_len); 2633 wpas_remove_persistent_peer(wpa_s, ssid, peer); 2634} 2635 2636 2637static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 2638 const struct p2p_channels *channels, 2639 const u8 *peer) 2640{ 2641 struct wpa_supplicant *wpa_s = ctx; 2642 struct wpa_ssid *ssid; 2643 2644 if (bssid) { 2645 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2646 "status=%d " MACSTR, 2647 status, MAC2STR(bssid)); 2648 } else { 2649 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2650 "status=%d ", status); 2651 } 2652 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 2653 2654 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 2655 status, MAC2STR(peer)); 2656 if (wpa_s->pending_invite_ssid_id == -1) { 2657 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 2658 wpas_remove_persistent_client(wpa_s, peer); 2659 return; /* Invitation to active group */ 2660 } 2661 2662 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2663 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 2664 "invitation exchange to indicate readiness for " 2665 "re-invocation"); 2666 } 2667 2668 if (status != P2P_SC_SUCCESS) { 2669 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 2670 ssid = wpa_config_get_network( 2671 wpa_s->conf, wpa_s->pending_invite_ssid_id); 2672 wpas_remove_persistent_peer(wpa_s, ssid, peer); 2673 } 2674 wpas_p2p_remove_pending_group_interface(wpa_s); 2675 return; 2676 } 2677 2678 ssid = wpa_config_get_network(wpa_s->conf, 2679 wpa_s->pending_invite_ssid_id); 2680 if (ssid == NULL) { 2681 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 2682 "data matching with invitation"); 2683 return; 2684 } 2685 2686 /* 2687 * The peer could have missed our ctrl::ack frame for Invitation 2688 * Response and continue retransmitting the frame. To reduce the 2689 * likelihood of the peer not getting successful TX status for the 2690 * Invitation Response frame, wait a short time here before starting 2691 * the persistent group so that we will remain on the current channel to 2692 * acknowledge any possible retransmission from the peer. 2693 */ 2694#ifndef ANDROID_P2P 2695 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 2696 "starting persistent group"); 2697 os_sleep(0, 50000); 2698#else 2699 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 100 ms wait on current channel before " 2700 "starting persistent group"); 2701 os_sleep(0, 100000); 2702#endif 2703 2704 wpas_p2p_group_add_persistent(wpa_s, ssid, 2705 ssid->mode == WPAS_MODE_P2P_GO, 2706 wpa_s->p2p_persistent_go_freq, 2707 wpa_s->p2p_go_ht40, channels); 2708} 2709 2710 2711static int wpas_p2p_disallowed_freq(struct wpa_global *global, 2712 unsigned int freq) 2713{ 2714 unsigned int i; 2715 2716 if (global->p2p_disallow_freq == NULL) 2717 return 0; 2718 2719 for (i = 0; i < global->num_p2p_disallow_freq; i++) { 2720 if (freq >= global->p2p_disallow_freq[i].min && 2721 freq <= global->p2p_disallow_freq[i].max) 2722 return 1; 2723 } 2724 2725 return 0; 2726} 2727 2728 2729static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 2730{ 2731 reg->channel[reg->channels] = chan; 2732 reg->channels++; 2733} 2734 2735 2736static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 2737 struct p2p_channels *chan) 2738{ 2739 int i, cla = 0; 2740 2741 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 2742 "band"); 2743 2744 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 2745 chan->reg_class[cla].reg_class = 81; 2746 chan->reg_class[cla].channels = 0; 2747 for (i = 0; i < 11; i++) { 2748 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 2749 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 2750 } 2751 if (chan->reg_class[cla].channels) 2752 cla++; 2753 2754 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 2755 "band"); 2756 2757 /* Operating class 115 - 5 GHz, channels 36-48 */ 2758 chan->reg_class[cla].reg_class = 115; 2759 chan->reg_class[cla].channels = 0; 2760 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 2761 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 2762 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 2763 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 2764 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 2765 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 2766 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 2767 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 2768 if (chan->reg_class[cla].channels) 2769 cla++; 2770 2771 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 2772 "band"); 2773 2774 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 2775 chan->reg_class[cla].reg_class = 124; 2776 chan->reg_class[cla].channels = 0; 2777 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 2778 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 2779 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 2780 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 2781 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 2782 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 2783 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 2784 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 2785 if (chan->reg_class[cla].channels) 2786 cla++; 2787 2788 chan->reg_classes = cla; 2789 return 0; 2790} 2791 2792 2793static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 2794 u16 num_modes, 2795 enum hostapd_hw_mode mode) 2796{ 2797 u16 i; 2798 2799 for (i = 0; i < num_modes; i++) { 2800 if (modes[i].mode == mode) 2801 return &modes[i]; 2802 } 2803 2804 return NULL; 2805} 2806 2807 2808static int has_channel(struct wpa_global *global, 2809 struct hostapd_hw_modes *mode, u8 chan, int *flags) 2810{ 2811 int i; 2812 unsigned int freq; 2813 2814 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 2815 chan * 5; 2816 if (wpas_p2p_disallowed_freq(global, freq)) 2817 return 0; 2818 2819 for (i = 0; i < mode->num_channels; i++) { 2820 if (mode->channels[i].chan == chan) { 2821 if (flags) 2822 *flags = mode->channels[i].flag; 2823 return !(mode->channels[i].flag & 2824 (HOSTAPD_CHAN_DISABLED | 2825 HOSTAPD_CHAN_PASSIVE_SCAN | 2826 HOSTAPD_CHAN_NO_IBSS | 2827 HOSTAPD_CHAN_RADAR)); 2828 } 2829 } 2830 2831 return 0; 2832} 2833 2834 2835struct p2p_oper_class_map { 2836 enum hostapd_hw_mode mode; 2837 u8 op_class; 2838 u8 min_chan; 2839 u8 max_chan; 2840 u8 inc; 2841 enum { BW20, BW40PLUS, BW40MINUS } bw; 2842}; 2843 2844static struct p2p_oper_class_map op_class[] = { 2845 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 2846#if 0 /* Do not enable HT40 on 2 GHz for now */ 2847 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 2848 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 2849#endif 2850 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 2851 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 2852 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 2853 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 2854 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 2855 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 2856 { -1, 0, 0, 0, 0, BW20 } 2857}; 2858 2859 2860static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 2861 struct hostapd_hw_modes *mode, 2862 u8 channel, u8 bw) 2863{ 2864 int flag; 2865 2866 if (!has_channel(wpa_s->global, mode, channel, &flag)) 2867 return -1; 2868 if (bw == BW40MINUS && 2869 (!(flag & HOSTAPD_CHAN_HT40MINUS) || 2870 !has_channel(wpa_s->global, mode, channel - 4, NULL))) 2871 return 0; 2872 if (bw == BW40PLUS && 2873 (!(flag & HOSTAPD_CHAN_HT40PLUS) || 2874 !has_channel(wpa_s->global, mode, channel + 4, NULL))) 2875 return 0; 2876 return 1; 2877} 2878 2879 2880static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 2881 struct p2p_channels *chan) 2882{ 2883 struct hostapd_hw_modes *mode; 2884 int cla, op; 2885 2886 if (wpa_s->hw.modes == NULL) { 2887 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 2888 "of all supported channels; assume dualband " 2889 "support"); 2890 return wpas_p2p_default_channels(wpa_s, chan); 2891 } 2892 2893 cla = 0; 2894 2895 for (op = 0; op_class[op].op_class; op++) { 2896 struct p2p_oper_class_map *o = &op_class[op]; 2897 u8 ch; 2898 struct p2p_reg_class *reg = NULL; 2899 2900 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 2901 if (mode == NULL) 2902 continue; 2903 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2904 if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1) 2905 continue; 2906 if (reg == NULL) { 2907 wpa_printf(MSG_DEBUG, "P2P: Add operating " 2908 "class %u", o->op_class); 2909 reg = &chan->reg_class[cla]; 2910 cla++; 2911 reg->reg_class = o->op_class; 2912 } 2913 reg->channel[reg->channels] = ch; 2914 reg->channels++; 2915 } 2916 if (reg) { 2917 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 2918 reg->channel, reg->channels); 2919 } 2920 } 2921 2922 chan->reg_classes = cla; 2923 2924 return 0; 2925} 2926 2927 2928int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 2929 struct hostapd_hw_modes *mode, u8 channel) 2930{ 2931 int op, ret; 2932 2933 for (op = 0; op_class[op].op_class; op++) { 2934 struct p2p_oper_class_map *o = &op_class[op]; 2935 u8 ch; 2936 2937 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2938 if (o->mode != HOSTAPD_MODE_IEEE80211A || 2939 o->bw == BW20 || ch != channel) 2940 continue; 2941 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 2942 if (ret < 0) 2943 continue; 2944 else if (ret > 0) 2945 return (o->bw == BW40MINUS) ? -1 : 1; 2946 else 2947 return 0; 2948 } 2949 } 2950 return 0; 2951} 2952 2953 2954static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 2955 size_t buf_len) 2956{ 2957 struct wpa_supplicant *wpa_s = ctx; 2958 2959 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2960 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 2961 break; 2962 } 2963 if (wpa_s == NULL) 2964 return -1; 2965 2966 return wpa_drv_get_noa(wpa_s, buf, buf_len); 2967} 2968 2969 2970static int wpas_go_connected(void *ctx, const u8 *dev_addr) 2971{ 2972 struct wpa_supplicant *wpa_s = ctx; 2973 2974 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2975 struct wpa_ssid *ssid = wpa_s->current_ssid; 2976 if (ssid == NULL) 2977 continue; 2978 if (ssid->mode != WPAS_MODE_INFRA) 2979 continue; 2980 if (wpa_s->wpa_state != WPA_COMPLETED && 2981 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 2982 continue; 2983 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 2984 return 1; 2985 } 2986 2987 return 0; 2988} 2989 2990 2991/** 2992 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 2993 * @global: Pointer to global data from wpa_supplicant_init() 2994 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2995 * Returns: 0 on success, -1 on failure 2996 */ 2997int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 2998{ 2999 struct p2p_config p2p; 3000 unsigned int r; 3001 int i; 3002 3003 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 3004 return 0; 3005 3006 if (global->p2p) 3007 return 0; 3008 3009 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3010 struct p2p_params params; 3011 3012 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); 3013 os_memset(¶ms, 0, sizeof(params)); 3014 params.dev_name = wpa_s->conf->device_name; 3015 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, 3016 WPS_DEV_TYPE_LEN); 3017 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 3018 os_memcpy(params.sec_dev_type, 3019 wpa_s->conf->sec_device_type, 3020 params.num_sec_dev_types * WPS_DEV_TYPE_LEN); 3021 3022 if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) 3023 return -1; 3024 3025 return 0; 3026 } 3027 3028 os_memset(&p2p, 0, sizeof(p2p)); 3029 p2p.msg_ctx = wpa_s; 3030 p2p.cb_ctx = wpa_s; 3031 p2p.p2p_scan = wpas_p2p_scan; 3032 p2p.send_action = wpas_send_action; 3033 p2p.send_action_done = wpas_send_action_done; 3034 p2p.go_neg_completed = wpas_go_neg_completed; 3035 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 3036 p2p.dev_found = wpas_dev_found; 3037 p2p.dev_lost = wpas_dev_lost; 3038 p2p.start_listen = wpas_start_listen; 3039 p2p.stop_listen = wpas_stop_listen; 3040 p2p.send_probe_resp = wpas_send_probe_resp; 3041 p2p.sd_request = wpas_sd_request; 3042 p2p.sd_response = wpas_sd_response; 3043 p2p.prov_disc_req = wpas_prov_disc_req; 3044 p2p.prov_disc_resp = wpas_prov_disc_resp; 3045 p2p.prov_disc_fail = wpas_prov_disc_fail; 3046 p2p.invitation_process = wpas_invitation_process; 3047 p2p.invitation_received = wpas_invitation_received; 3048 p2p.invitation_result = wpas_invitation_result; 3049 p2p.get_noa = wpas_get_noa; 3050 p2p.go_connected = wpas_go_connected; 3051 3052 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 3053 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 3054 p2p.dev_name = wpa_s->conf->device_name; 3055 p2p.manufacturer = wpa_s->conf->manufacturer; 3056 p2p.model_name = wpa_s->conf->model_name; 3057 p2p.model_number = wpa_s->conf->model_number; 3058 p2p.serial_number = wpa_s->conf->serial_number; 3059 if (wpa_s->wps) { 3060 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 3061 p2p.config_methods = wpa_s->wps->config_methods; 3062 } 3063 3064 if (wpa_s->conf->p2p_listen_reg_class && 3065 wpa_s->conf->p2p_listen_channel) { 3066 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 3067 p2p.channel = wpa_s->conf->p2p_listen_channel; 3068 } else { 3069 p2p.reg_class = 81; 3070 /* 3071 * Pick one of the social channels randomly as the listen 3072 * channel. 3073 */ 3074 os_get_random((u8 *) &r, sizeof(r)); 3075 p2p.channel = 1 + (r % 3) * 5; 3076 } 3077 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 3078 3079 if (wpa_s->conf->p2p_oper_reg_class && 3080 wpa_s->conf->p2p_oper_channel) { 3081 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 3082 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 3083 p2p.cfg_op_channel = 1; 3084 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 3085 "%d:%d", p2p.op_reg_class, p2p.op_channel); 3086 3087 } else { 3088 p2p.op_reg_class = 81; 3089 /* 3090 * Use random operation channel from (1, 6, 11) if no other 3091 * preference is indicated. 3092 */ 3093 os_get_random((u8 *) &r, sizeof(r)); 3094 p2p.op_channel = 1 + (r % 3) * 5; 3095 p2p.cfg_op_channel = 0; 3096 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 3097 "%d:%d", p2p.op_reg_class, p2p.op_channel); 3098 } 3099 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 3100 os_memcpy(p2p.country, wpa_s->conf->country, 2); 3101 p2p.country[2] = 0x04; 3102 } else 3103 os_memcpy(p2p.country, "XX\x04", 3); 3104 3105 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { 3106 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 3107 "channel list"); 3108 return -1; 3109 } 3110 3111 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 3112 WPS_DEV_TYPE_LEN); 3113 3114 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 3115 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 3116 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 3117 3118 p2p.concurrent_operations = !!(wpa_s->drv_flags & 3119 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 3120 3121 p2p.max_peers = 100; 3122 3123 if (wpa_s->conf->p2p_ssid_postfix) { 3124 p2p.ssid_postfix_len = 3125 os_strlen(wpa_s->conf->p2p_ssid_postfix); 3126 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 3127 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 3128 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 3129 p2p.ssid_postfix_len); 3130 } 3131 3132 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 3133 3134 p2p.max_listen = wpa_s->max_remain_on_chan; 3135 3136#ifdef ANDROID_P2P 3137 if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) { 3138 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT; 3139 wpa_printf(MSG_DEBUG, "P2P: Multi channel concurrency support"); 3140 } else { 3141 // Add support for WPA_DRIVER_FLAGS_P2P_CONCURRENT 3142 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT; 3143 wpa_printf(MSG_DEBUG, "P2P: Single channel concurrency support"); 3144 } 3145#endif 3146 3147 global->p2p = p2p_init(&p2p); 3148 if (global->p2p == NULL) 3149 return -1; 3150 global->p2p_init_wpa_s = wpa_s; 3151 3152 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 3153 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 3154 continue; 3155 p2p_add_wps_vendor_extension( 3156 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 3157 } 3158 3159 return 0; 3160} 3161 3162 3163/** 3164 * wpas_p2p_deinit - Deinitialize per-interface P2P data 3165 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3166 * 3167 * This function deinitialize per-interface P2P data. 3168 */ 3169void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 3170{ 3171 if (wpa_s->driver && wpa_s->drv_priv) 3172 wpa_drv_probe_req_report(wpa_s, 0); 3173 3174 if (wpa_s->go_params) { 3175 /* Clear any stored provisioning info */ 3176 p2p_clear_provisioning_info( 3177 wpa_s->global->p2p, 3178 wpa_s->go_params->peer_device_addr); 3179 } 3180 3181 os_free(wpa_s->go_params); 3182 wpa_s->go_params = NULL; 3183 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3184 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3185 wpa_s->p2p_long_listen = 0; 3186 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3187 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 3188 wpas_p2p_remove_pending_group_interface(wpa_s); 3189 3190 /* TODO: remove group interface from the driver if this wpa_s instance 3191 * is on top of a P2P group interface */ 3192} 3193 3194 3195/** 3196 * wpas_p2p_deinit_global - Deinitialize global P2P module 3197 * @global: Pointer to global data from wpa_supplicant_init() 3198 * 3199 * This function deinitializes the global (per device) P2P module. 3200 */ 3201void wpas_p2p_deinit_global(struct wpa_global *global) 3202{ 3203 struct wpa_supplicant *wpa_s, *tmp; 3204 3205 wpa_s = global->ifaces; 3206 if (wpa_s) 3207 wpas_p2p_service_flush(wpa_s); 3208 3209 if (global->p2p == NULL) 3210 return; 3211 3212 /* Remove remaining P2P group interfaces */ 3213 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 3214 wpa_s = wpa_s->next; 3215 while (wpa_s) { 3216 tmp = global->ifaces; 3217 while (tmp && 3218 (tmp == wpa_s || 3219 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 3220 tmp = tmp->next; 3221 } 3222 if (tmp == NULL) 3223 break; 3224 /* Disconnect from the P2P group and deinit the interface */ 3225 wpas_p2p_disconnect(tmp); 3226 } 3227 3228 /* 3229 * Deinit GO data on any possibly remaining interface (if main 3230 * interface is used as GO). 3231 */ 3232 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3233 if (wpa_s->ap_iface) 3234 wpas_p2p_group_deinit(wpa_s); 3235 } 3236 3237 p2p_deinit(global->p2p); 3238 global->p2p = NULL; 3239 global->p2p_init_wpa_s = NULL; 3240} 3241 3242 3243static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 3244{ 3245 if (wpa_s->conf->p2p_no_group_iface) 3246 return 0; /* separate interface disabled per configuration */ 3247 if (wpa_s->drv_flags & 3248 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 3249 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 3250 return 1; /* P2P group requires a new interface in every case 3251 */ 3252 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 3253 return 0; /* driver does not support concurrent operations */ 3254 if (wpa_s->global->ifaces->next) 3255 return 1; /* more that one interface already in use */ 3256 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 3257 return 1; /* this interface is already in use */ 3258 return 0; 3259} 3260 3261 3262static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 3263 const u8 *peer_addr, 3264 enum p2p_wps_method wps_method, 3265 int go_intent, const u8 *own_interface_addr, 3266 unsigned int force_freq, int persistent_group, 3267 struct wpa_ssid *ssid, unsigned int pref_freq) 3268{ 3269 if (persistent_group && wpa_s->conf->persistent_reconnect) 3270 persistent_group = 2; 3271 3272 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3273 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, 3274 go_intent, own_interface_addr, 3275 force_freq, persistent_group); 3276 } 3277 3278 /* 3279 * Increase GO config timeout if HT40 is used since it takes some time 3280 * to scan channels for coex purposes before the BSS can be started. 3281 */ 3282 p2p_set_config_timeout(wpa_s->global->p2p, 3283 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 3284 3285 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 3286 go_intent, own_interface_addr, force_freq, 3287 persistent_group, ssid ? ssid->ssid : NULL, 3288 ssid ? ssid->ssid_len : 0, 3289 wpa_s->p2p_pd_before_go_neg, pref_freq); 3290} 3291 3292 3293static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 3294 const u8 *peer_addr, 3295 enum p2p_wps_method wps_method, 3296 int go_intent, const u8 *own_interface_addr, 3297 unsigned int force_freq, int persistent_group, 3298 struct wpa_ssid *ssid, unsigned int pref_freq) 3299{ 3300 if (persistent_group && wpa_s->conf->persistent_reconnect) 3301 persistent_group = 2; 3302 3303 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3304 return -1; 3305 3306 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 3307 go_intent, own_interface_addr, force_freq, 3308 persistent_group, ssid ? ssid->ssid : NULL, 3309 ssid ? ssid->ssid_len : 0, pref_freq); 3310} 3311 3312 3313static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 3314{ 3315 wpa_s->p2p_join_scan_count++; 3316 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 3317 wpa_s->p2p_join_scan_count); 3318 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 3319 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 3320 " for join operationg - stop join attempt", 3321 MAC2STR(wpa_s->pending_join_iface_addr)); 3322 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3323 if (wpa_s->p2p_auto_pd) { 3324 wpa_s->p2p_auto_pd = 0; 3325 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3326 " p2p_dev_addr=" MACSTR " status=N/A", 3327 MAC2STR(wpa_s->pending_join_dev_addr)); 3328 return; 3329 } 3330 wpa_msg(wpa_s->parent, MSG_INFO, 3331 P2P_EVENT_GROUP_FORMATION_FAILURE); 3332 } 3333} 3334 3335 3336static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 3337{ 3338 struct wpa_supplicant *iface; 3339 int shared_freq; 3340 u8 bssid[ETH_ALEN]; 3341 3342 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) 3343 return 0; 3344 3345 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 3346 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s) 3347 continue; 3348 if (iface->current_ssid == NULL || iface->assoc_freq == 0) 3349 continue; 3350 if (iface->current_ssid->mode == WPAS_MODE_AP || 3351 iface->current_ssid->mode == WPAS_MODE_P2P_GO) 3352 shared_freq = iface->current_ssid->frequency; 3353 else if (wpa_drv_get_bssid(iface, bssid) == 0) 3354 shared_freq = iface->assoc_freq; 3355 else 3356 shared_freq = 0; 3357 3358 if (shared_freq && freq != shared_freq) { 3359 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s " 3360 "connected on %d MHz - new connection on " 3361 "%d MHz", iface->ifname, shared_freq, freq); 3362 return 1; 3363 } 3364 } 3365 3366 shared_freq = wpa_drv_shared_freq(wpa_s); 3367 if (shared_freq > 0 && shared_freq != freq) { 3368 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared " 3369 "virtual interface connected on %d MHz - new " 3370 "connection on %d MHz", shared_freq, freq); 3371 return 1; 3372 } 3373 3374 return 0; 3375} 3376 3377 3378static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 3379 const u8 *peer_dev_addr) 3380{ 3381 struct wpa_bss *bss; 3382 int updated; 3383 3384 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 3385 if (bss == NULL) 3386 return -1; 3387 if (bss->last_update_idx < wpa_s->bss_update_idx) { 3388 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 3389 "last scan"); 3390 return 0; 3391 } 3392 3393 updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update); 3394 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 3395 "%ld.%06ld (%supdated in last scan)", 3396 bss->last_update.sec, bss->last_update.usec, 3397 updated ? "": "not "); 3398 3399 return updated; 3400} 3401 3402 3403static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 3404 struct wpa_scan_results *scan_res) 3405{ 3406 struct wpa_bss *bss; 3407 int freq; 3408 u8 iface_addr[ETH_ALEN]; 3409 3410 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3411 3412 if (wpa_s->global->p2p_disabled) 3413 return; 3414 3415 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 3416 scan_res ? (int) scan_res->num : -1, 3417 wpa_s->p2p_auto_join ? "auto_" : ""); 3418 3419 if (scan_res) 3420 wpas_p2p_scan_res_handler(wpa_s, scan_res); 3421 3422 if (wpa_s->p2p_auto_pd) { 3423 int join = wpas_p2p_peer_go(wpa_s, 3424 wpa_s->pending_join_dev_addr); 3425 if (join == 0 && 3426 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 3427 wpa_s->auto_pd_scan_retry++; 3428 bss = wpa_bss_get_bssid_latest( 3429 wpa_s, wpa_s->pending_join_dev_addr); 3430 if (bss) { 3431 freq = bss->freq; 3432 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 3433 "the peer " MACSTR " at %d MHz", 3434 wpa_s->auto_pd_scan_retry, 3435 MAC2STR(wpa_s-> 3436 pending_join_dev_addr), 3437 freq); 3438 wpas_p2p_join_scan_req(wpa_s, freq); 3439 return; 3440 } 3441 } 3442 3443 if (join < 0) 3444 join = 0; 3445 3446 wpa_s->p2p_auto_pd = 0; 3447 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 3448 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 3449 MAC2STR(wpa_s->pending_join_dev_addr), join); 3450 if (p2p_prov_disc_req(wpa_s->global->p2p, 3451 wpa_s->pending_join_dev_addr, 3452 wpa_s->pending_pd_config_methods, join, 3453 0, wpa_s->user_initiated_pd) < 0) { 3454 wpa_s->p2p_auto_pd = 0; 3455 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3456 " p2p_dev_addr=" MACSTR " status=N/A", 3457 MAC2STR(wpa_s->pending_join_dev_addr)); 3458 } 3459 return; 3460 } 3461 3462 if (wpa_s->p2p_auto_join) { 3463 int join = wpas_p2p_peer_go(wpa_s, 3464 wpa_s->pending_join_dev_addr); 3465 if (join < 0) { 3466 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 3467 "running a GO -> use GO Negotiation"); 3468 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 3469 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 3470 wpa_s->p2p_persistent_group, 0, 0, 0, 3471 wpa_s->p2p_go_intent, 3472 wpa_s->p2p_connect_freq, 3473 wpa_s->p2p_persistent_id, 3474 wpa_s->p2p_pd_before_go_neg, 3475 wpa_s->p2p_go_ht40); 3476 return; 3477 } 3478 3479 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 3480 "try to join the group", join ? "" : 3481 " in older scan"); 3482 if (!join) 3483 wpa_s->p2p_fallback_to_go_neg = 1; 3484 } 3485 3486 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3487 wpa_s->pending_join_iface_addr); 3488 if (freq < 0 && 3489 p2p_get_interface_addr(wpa_s->global->p2p, 3490 wpa_s->pending_join_dev_addr, 3491 iface_addr) == 0 && 3492 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 3493 { 3494 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 3495 "address for join from " MACSTR " to " MACSTR 3496 " based on newly discovered P2P peer entry", 3497 MAC2STR(wpa_s->pending_join_iface_addr), 3498 MAC2STR(iface_addr)); 3499 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 3500 ETH_ALEN); 3501 3502 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3503 wpa_s->pending_join_iface_addr); 3504 } 3505 if (freq >= 0) { 3506 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3507 "from P2P peer table: %d MHz", freq); 3508 } 3509 bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr); 3510 if (bss) { 3511 freq = bss->freq; 3512 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3513 "from BSS table: %d MHz", freq); 3514 } 3515 if (freq > 0) { 3516 u16 method; 3517 3518 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 3519 wpa_msg(wpa_s->parent, MSG_INFO, 3520 P2P_EVENT_GROUP_FORMATION_FAILURE 3521 "reason=FREQ_CONFLICT"); 3522 return; 3523 } 3524 3525 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 3526 "prior to joining an existing group (GO " MACSTR 3527 " freq=%u MHz)", 3528 MAC2STR(wpa_s->pending_join_dev_addr), freq); 3529 wpa_s->pending_pd_before_join = 1; 3530 3531 switch (wpa_s->pending_join_wps_method) { 3532 case WPS_PIN_DISPLAY: 3533 method = WPS_CONFIG_KEYPAD; 3534 break; 3535 case WPS_PIN_KEYPAD: 3536 method = WPS_CONFIG_DISPLAY; 3537 break; 3538 case WPS_PBC: 3539 method = WPS_CONFIG_PUSHBUTTON; 3540 break; 3541 default: 3542 method = 0; 3543 break; 3544 } 3545 3546 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 3547 wpa_s->pending_join_dev_addr) == 3548 method)) { 3549 /* 3550 * We have already performed provision discovery for 3551 * joining the group. Proceed directly to join 3552 * operation without duplicated provision discovery. */ 3553 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 3554 "with " MACSTR " already done - proceed to " 3555 "join", 3556 MAC2STR(wpa_s->pending_join_dev_addr)); 3557 wpa_s->pending_pd_before_join = 0; 3558 goto start; 3559 } 3560 3561 if (p2p_prov_disc_req(wpa_s->global->p2p, 3562 wpa_s->pending_join_dev_addr, method, 1, 3563 freq, wpa_s->user_initiated_pd) < 0) { 3564 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 3565 "Discovery Request before joining an " 3566 "existing group"); 3567 wpa_s->pending_pd_before_join = 0; 3568 goto start; 3569 } 3570 return; 3571 } 3572 3573 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 3574 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3575 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3576 wpas_p2p_check_join_scan_limit(wpa_s); 3577 return; 3578 3579start: 3580 /* Start join operation immediately */ 3581 wpas_p2p_join_start(wpa_s); 3582} 3583 3584 3585static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq) 3586{ 3587 int ret; 3588 struct wpa_driver_scan_params params; 3589 struct wpabuf *wps_ie, *ies; 3590 size_t ielen; 3591 int freqs[2] = { 0, 0 }; 3592#ifdef ANDROID_P2P 3593 int oper_freq; 3594 3595 /* If freq is not provided, check the operating freq of the GO and do a 3596 * a directed scan to save time 3597 */ 3598 if(!freq) { 3599 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 3600 wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq; 3601 } 3602#endif 3603 os_memset(¶ms, 0, sizeof(params)); 3604 3605 /* P2P Wildcard SSID */ 3606 params.num_ssids = 1; 3607 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 3608 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 3609 3610 wpa_s->wps->dev.p2p = 1; 3611 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 3612 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 3613 NULL); 3614 if (wps_ie == NULL) { 3615 wpas_p2p_scan_res_join(wpa_s, NULL); 3616 return; 3617 } 3618 3619 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 3620 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 3621 if (ies == NULL) { 3622 wpabuf_free(wps_ie); 3623 wpas_p2p_scan_res_join(wpa_s, NULL); 3624 return; 3625 } 3626 wpabuf_put_buf(ies, wps_ie); 3627 wpabuf_free(wps_ie); 3628 3629 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 3630 3631 params.p2p_probe = 1; 3632 params.extra_ies = wpabuf_head(ies); 3633 params.extra_ies_len = wpabuf_len(ies); 3634 if (freq > 0) { 3635 freqs[0] = freq; 3636 params.freqs = freqs; 3637 } 3638 3639 /* 3640 * Run a scan to update BSS table and start Provision Discovery once 3641 * the new scan results become available. 3642 */ 3643 ret = wpa_drv_scan(wpa_s, ¶ms); 3644 if (!ret) { 3645 os_get_time(&wpa_s->scan_trigger_time); 3646 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 3647 } 3648 3649 wpabuf_free(ies); 3650 3651 if (ret) { 3652 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 3653 "try again later"); 3654 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3655 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3656 wpas_p2p_check_join_scan_limit(wpa_s); 3657 } 3658} 3659 3660 3661static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 3662{ 3663 struct wpa_supplicant *wpa_s = eloop_ctx; 3664 wpas_p2p_join_scan_req(wpa_s, 0); 3665} 3666 3667 3668static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 3669 const u8 *dev_addr, enum p2p_wps_method wps_method, 3670 int auto_join) 3671{ 3672 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 3673 MACSTR " dev " MACSTR ")%s", 3674 MAC2STR(iface_addr), MAC2STR(dev_addr), 3675 auto_join ? " (auto_join)" : ""); 3676 3677 wpa_s->p2p_auto_pd = 0; 3678 wpa_s->p2p_auto_join = !!auto_join; 3679 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 3680 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 3681 wpa_s->pending_join_wps_method = wps_method; 3682 3683 /* Make sure we are not running find during connection establishment */ 3684 wpas_p2p_stop_find(wpa_s); 3685 3686 wpa_s->p2p_join_scan_count = 0; 3687 wpas_p2p_join_scan(wpa_s, NULL); 3688 return 0; 3689} 3690 3691 3692static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) 3693{ 3694 struct wpa_supplicant *group; 3695 struct p2p_go_neg_results res; 3696 struct wpa_bss *bss; 3697 3698 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 3699 if (group == NULL) 3700 return -1; 3701 if (group != wpa_s) { 3702 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 3703 sizeof(group->p2p_pin)); 3704 group->p2p_wps_method = wpa_s->p2p_wps_method; 3705 } else { 3706 /* 3707 * Need to mark the current interface for p2p_group_formation 3708 * when a separate group interface is not used. This is needed 3709 * to allow p2p_cancel stop a pending p2p_connect-join. 3710 * wpas_p2p_init_group_interface() addresses this for the case 3711 * where a separate group interface is used. 3712 */ 3713 wpa_s->global->p2p_group_formation = wpa_s; 3714 } 3715 3716 group->p2p_in_provisioning = 1; 3717 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 3718 3719 os_memset(&res, 0, sizeof(res)); 3720 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 3721 ETH_ALEN); 3722 res.wps_method = wpa_s->pending_join_wps_method; 3723 bss = wpa_bss_get_bssid_latest(wpa_s, wpa_s->pending_join_iface_addr); 3724 if (bss) { 3725 res.freq = bss->freq; 3726 res.ssid_len = bss->ssid_len; 3727 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 3728 } 3729 3730 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 3731 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 3732 "starting client"); 3733 wpa_drv_cancel_remain_on_channel(wpa_s); 3734 wpa_s->off_channel_freq = 0; 3735 wpa_s->roc_waiting_drv_freq = 0; 3736 } 3737 wpas_start_wps_enrollee(group, &res); 3738 3739 /* 3740 * Allow a longer timeout for join-a-running-group than normal 15 3741 * second group formation timeout since the GO may not have authorized 3742 * our connection yet. 3743 */ 3744 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3745 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 3746 wpa_s, NULL); 3747 3748 return 0; 3749} 3750 3751 3752static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 3753 int *force_freq, int *pref_freq, 3754 int *oper_freq) 3755{ 3756 if (freq > 0) { 3757 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3758 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 3759 "(%u MHz) is not supported for P2P uses", 3760 freq); 3761 return -3; 3762 } 3763 3764 if (*oper_freq > 0 && freq != *oper_freq && 3765 !(wpa_s->drv_flags & 3766 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3767 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3768 "on %u MHz while connected on another " 3769 "channel (%u MHz)", freq, *oper_freq); 3770 return -2; 3771 } 3772 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3773 "requested channel (%u MHz)", freq); 3774 *force_freq = freq; 3775 } else if (*oper_freq > 0 && 3776 !p2p_supported_freq(wpa_s->global->p2p, *oper_freq)) { 3777 if (!(wpa_s->drv_flags & 3778 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3779 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3780 "while connected on non-P2P supported " 3781 "channel (%u MHz)", *oper_freq); 3782 return -2; 3783 } 3784 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 3785 "(%u MHz) not available for P2P - try to use " 3786 "another channel", *oper_freq); 3787 *force_freq = 0; 3788 } else if (*oper_freq > 0 && *pref_freq == 0 && 3789 (wpa_s->drv_flags & 3790 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3791 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we " 3792 "are already using (%u MHz) on another interface", 3793 *oper_freq); 3794 *pref_freq = *oper_freq; 3795 } else if (*oper_freq > 0) { 3796 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3797 "channel we are already using (%u MHz) on another " 3798 "interface", *oper_freq); 3799 *force_freq = *oper_freq; 3800 } 3801 3802 return 0; 3803} 3804 3805 3806/** 3807 * wpas_p2p_connect - Request P2P Group Formation to be started 3808 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3809 * @peer_addr: Address of the peer P2P Device 3810 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 3811 * @persistent_group: Whether to create a persistent group 3812 * @auto_join: Whether to select join vs. GO Negotiation automatically 3813 * @join: Whether to join an existing group (as a client) instead of starting 3814 * Group Owner negotiation; @peer_addr is BSSID in that case 3815 * @auth: Whether to only authorize the connection instead of doing that and 3816 * initiating Group Owner negotiation 3817 * @go_intent: GO Intent or -1 to use default 3818 * @freq: Frequency for the group or 0 for auto-selection 3819 * @persistent_id: Persistent group credentials to use for forcing GO 3820 * parameters or -1 to generate new values (SSID/passphrase) 3821 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 3822 * interoperability workaround when initiating group formation 3823 * @ht40: Start GO with 40 MHz channel width 3824 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 3825 * failure, -2 on failure due to channel not currently available, 3826 * -3 if forced channel is not supported 3827 */ 3828int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3829 const char *pin, enum p2p_wps_method wps_method, 3830 int persistent_group, int auto_join, int join, int auth, 3831 int go_intent, int freq, int persistent_id, int pd, 3832 int ht40) 3833{ 3834 int force_freq = 0, pref_freq = 0, oper_freq = 0; 3835 u8 bssid[ETH_ALEN]; 3836 int ret = 0, res; 3837 enum wpa_driver_if_type iftype; 3838 const u8 *if_addr; 3839 struct wpa_ssid *ssid = NULL; 3840 3841 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3842 return -1; 3843 3844 if (persistent_id >= 0) { 3845 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 3846 if (ssid == NULL || ssid->disabled != 2 || 3847 ssid->mode != WPAS_MODE_P2P_GO) 3848 return -1; 3849 } 3850 3851 if (go_intent < 0) 3852 go_intent = wpa_s->conf->p2p_go_intent; 3853 3854 if (!auth) 3855 wpa_s->p2p_long_listen = 0; 3856 3857 wpa_s->p2p_wps_method = wps_method; 3858 wpa_s->p2p_persistent_group = !!persistent_group; 3859 wpa_s->p2p_persistent_id = persistent_id; 3860 wpa_s->p2p_go_intent = go_intent; 3861 wpa_s->p2p_connect_freq = freq; 3862 wpa_s->p2p_fallback_to_go_neg = 0; 3863 wpa_s->p2p_pd_before_go_neg = !!pd; 3864 wpa_s->p2p_go_ht40 = !!ht40; 3865 3866 if (pin) 3867 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 3868 else if (wps_method == WPS_PIN_DISPLAY) { 3869 ret = wps_generate_pin(); 3870 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 3871 ret); 3872 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 3873 wpa_s->p2p_pin); 3874 } else 3875 wpa_s->p2p_pin[0] = '\0'; 3876 3877 if (join || auto_join) { 3878 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 3879 if (auth) { 3880 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 3881 "connect a running group from " MACSTR, 3882 MAC2STR(peer_addr)); 3883 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 3884 return ret; 3885 } 3886 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 3887 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 3888 iface_addr) < 0) { 3889 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 3890 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 3891 dev_addr); 3892 } 3893 if (auto_join) { 3894 os_get_time(&wpa_s->p2p_auto_started); 3895 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 3896 "%ld.%06ld", 3897 wpa_s->p2p_auto_started.sec, 3898 wpa_s->p2p_auto_started.usec); 3899 } 3900 wpa_s->user_initiated_pd = 1; 3901 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 3902 auto_join) < 0) 3903 return -1; 3904 return ret; 3905 } 3906 3907 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3908 wpa_s->assoc_freq) { 3909 oper_freq = wpa_s->assoc_freq; 3910 } else { 3911 oper_freq = wpa_drv_shared_freq(wpa_s); 3912 if (oper_freq < 0) 3913 oper_freq = 0; 3914 } 3915 3916 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 3917 &oper_freq); 3918 if (res) 3919 return res; 3920 wpas_p2p_set_own_freq_preference(wpa_s, oper_freq); 3921 3922 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 3923 3924 if (wpa_s->create_p2p_iface) { 3925 /* Prepare to add a new interface for the group */ 3926 iftype = WPA_IF_P2P_GROUP; 3927 if (go_intent == 15) 3928 iftype = WPA_IF_P2P_GO; 3929 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 3930 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3931 "interface for the group"); 3932 return -1; 3933 } 3934 3935 if_addr = wpa_s->pending_interface_addr; 3936 } else 3937 if_addr = wpa_s->own_addr; 3938 3939 if (auth) { 3940 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 3941 go_intent, if_addr, 3942 force_freq, persistent_group, ssid, 3943 pref_freq) < 0) 3944 return -1; 3945 return ret; 3946 } 3947 3948 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 3949 go_intent, if_addr, force_freq, 3950 persistent_group, ssid, pref_freq) < 0) { 3951 if (wpa_s->create_p2p_iface) 3952 wpas_p2p_remove_pending_group_interface(wpa_s); 3953 return -1; 3954 } 3955 return ret; 3956} 3957 3958 3959/** 3960 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 3961 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3962 * @freq: Frequency of the channel in MHz 3963 * @duration: Duration of the stay on the channel in milliseconds 3964 * 3965 * This callback is called when the driver indicates that it has started the 3966 * requested remain-on-channel duration. 3967 */ 3968void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3969 unsigned int freq, unsigned int duration) 3970{ 3971 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3972 return; 3973 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 3974 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 3975 wpa_s->pending_listen_duration); 3976 wpa_s->pending_listen_freq = 0; 3977 } 3978} 3979 3980 3981static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 3982 unsigned int timeout) 3983{ 3984 /* Limit maximum Listen state time based on driver limitation. */ 3985 if (timeout > wpa_s->max_remain_on_chan) 3986 timeout = wpa_s->max_remain_on_chan; 3987 3988 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3989 return wpa_drv_p2p_listen(wpa_s, timeout); 3990 3991 return p2p_listen(wpa_s->global->p2p, timeout); 3992} 3993 3994 3995/** 3996 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 3997 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3998 * @freq: Frequency of the channel in MHz 3999 * 4000 * This callback is called when the driver indicates that a remain-on-channel 4001 * operation has been completed, i.e., the duration on the requested channel 4002 * has timed out. 4003 */ 4004void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 4005 unsigned int freq) 4006{ 4007 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 4008 "(p2p_long_listen=%d ms pending_action_tx=%p)", 4009 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 4010 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4011 return; 4012 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 4013 return; /* P2P module started a new operation */ 4014 if (offchannel_pending_action_tx(wpa_s)) 4015 return; 4016 if (wpa_s->p2p_long_listen > 0) 4017 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 4018 if (wpa_s->p2p_long_listen > 0) { 4019 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 4020 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 4021 } 4022} 4023 4024 4025/** 4026 * wpas_p2p_group_remove - Remove a P2P group 4027 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4028 * @ifname: Network interface name of the group interface or "*" to remove all 4029 * groups 4030 * Returns: 0 on success, -1 on failure 4031 * 4032 * This function is used to remove a P2P group. This can be used to disconnect 4033 * from a group in which the local end is a P2P Client or to end a P2P Group in 4034 * case the local end is the Group Owner. If a virtual network interface was 4035 * created for this group, that interface will be removed. Otherwise, only the 4036 * configured P2P group network will be removed from the interface. 4037 */ 4038int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 4039{ 4040 struct wpa_global *global = wpa_s->global; 4041 4042 if (os_strcmp(ifname, "*") == 0) { 4043 struct wpa_supplicant *prev; 4044 wpa_s = global->ifaces; 4045 while (wpa_s) { 4046 prev = wpa_s; 4047 wpa_s = wpa_s->next; 4048 wpas_p2p_disconnect(prev); 4049 } 4050 return 0; 4051 } 4052 4053 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4054 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4055 break; 4056 } 4057 4058 return wpas_p2p_disconnect(wpa_s); 4059} 4060 4061 4062static int freq_included(const struct p2p_channels *channels, unsigned int freq) 4063{ 4064 if (channels == NULL) 4065 return 1; /* Assume no restrictions */ 4066 return p2p_channels_includes_freq(channels, freq); 4067} 4068 4069 4070static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 4071 struct p2p_go_neg_results *params, 4072 int freq, int ht40, 4073 const struct p2p_channels *channels) 4074{ 4075 u8 bssid[ETH_ALEN]; 4076 int res; 4077 4078 os_memset(params, 0, sizeof(*params)); 4079 params->role_go = 1; 4080 params->ht40 = ht40; 4081 if (freq) { 4082 if (!freq_included(channels, freq)) { 4083 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 4084 "accepted", freq); 4085 return -1; 4086 } 4087 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 4088 "frequency %d MHz", freq); 4089 params->freq = freq; 4090 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 4091 wpa_s->conf->p2p_oper_channel >= 1 && 4092 wpa_s->conf->p2p_oper_channel <= 11 && 4093 freq_included(channels, 4094 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 4095 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 4096 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 4097 "frequency %d MHz", params->freq); 4098 } else if ((wpa_s->conf->p2p_oper_reg_class == 115 || 4099 wpa_s->conf->p2p_oper_reg_class == 116 || 4100 wpa_s->conf->p2p_oper_reg_class == 117 || 4101 wpa_s->conf->p2p_oper_reg_class == 124 || 4102 wpa_s->conf->p2p_oper_reg_class == 126 || 4103 wpa_s->conf->p2p_oper_reg_class == 127) && 4104 freq_included(channels, 4105 5000 + 5 * wpa_s->conf->p2p_oper_channel)) { 4106 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 4107 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 4108 "frequency %d MHz", params->freq); 4109 } else if (wpa_s->conf->p2p_oper_channel == 0 && 4110 wpa_s->best_overall_freq > 0 && 4111 p2p_supported_freq(wpa_s->global->p2p, 4112 wpa_s->best_overall_freq) && 4113 freq_included(channels, wpa_s->best_overall_freq)) { 4114 params->freq = wpa_s->best_overall_freq; 4115 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 4116 "channel %d MHz", params->freq); 4117 } else if (wpa_s->conf->p2p_oper_channel == 0 && 4118 wpa_s->best_24_freq > 0 && 4119 p2p_supported_freq(wpa_s->global->p2p, 4120 wpa_s->best_24_freq) && 4121 freq_included(channels, wpa_s->best_24_freq)) { 4122 params->freq = wpa_s->best_24_freq; 4123 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 4124 "channel %d MHz", params->freq); 4125 } else if (wpa_s->conf->p2p_oper_channel == 0 && 4126 wpa_s->best_5_freq > 0 && 4127 p2p_supported_freq(wpa_s->global->p2p, 4128 wpa_s->best_5_freq) && 4129 freq_included(channels, wpa_s->best_5_freq)) { 4130 params->freq = wpa_s->best_5_freq; 4131 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 4132 "channel %d MHz", params->freq); 4133 } else { 4134 int chan; 4135 for (chan = 0; chan < 11; chan++) { 4136 params->freq = 2412 + chan * 5; 4137 if (!wpas_p2p_disallowed_freq(wpa_s->global, 4138 params->freq) && 4139 freq_included(channels, params->freq)) 4140 break; 4141 } 4142 if (chan == 11) { 4143 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " 4144 "allowed"); 4145 return -1; 4146 } 4147 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 4148 "known)", params->freq); 4149 } 4150 4151 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 4152 wpa_s->assoc_freq && !freq) { 4153 if (!p2p_supported_freq(wpa_s->global->p2p, wpa_s->assoc_freq) 4154 || !freq_included(channels, wpa_s->assoc_freq)) { 4155 if (wpa_s->drv_flags & 4156 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) { 4157 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on " 4158 "the channel we are already using " 4159 "(%u MHz) - allow multi-channel " 4160 "concurrency", wpa_s->assoc_freq); 4161 } else { 4162 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on " 4163 "the channel we are already using " 4164 "(%u MHz)", wpa_s->assoc_freq); 4165 return -1; 4166 } 4167 } else { 4168 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we " 4169 "are already using (%u MHz)", 4170 wpa_s->assoc_freq); 4171 params->freq = wpa_s->assoc_freq; 4172 } 4173 } 4174 4175 res = wpa_drv_shared_freq(wpa_s); 4176 if (res > 0 && !freq && 4177 (!p2p_supported_freq(wpa_s->global->p2p, res) || 4178 !freq_included(channels, res))) { 4179 if (wpa_s->drv_flags & 4180 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) { 4181 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on the " 4182 "channel we are already using on a shared " 4183 "interface (%u MHz) - allow multi-channel " 4184 "concurrency", res); 4185 } else { 4186 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on the " 4187 "channel we are already using on a shared " 4188 "interface (%u MHz)", res); 4189 return -1; 4190 } 4191 } else if (res > 0 && !freq) { 4192 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 4193 "already using on a shared interface"); 4194 params->freq = res; 4195 if (!freq_included(channels, params->freq)) { 4196 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 4197 "accepted", params->freq); 4198 return -1; 4199 } 4200 } else if (res > 0 && freq != res && 4201 !(wpa_s->drv_flags & 4202 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 4203 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " 4204 "while connected on another channel (%u MHz)", 4205 freq, res); 4206 return -1; 4207 } 4208 4209 return 0; 4210} 4211 4212 4213static struct wpa_supplicant * 4214wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 4215 int go) 4216{ 4217 struct wpa_supplicant *group_wpa_s; 4218 4219 if (!wpas_p2p_create_iface(wpa_s)) { 4220 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 4221 "operations"); 4222 return wpa_s; 4223 } 4224 4225 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 4226 WPA_IF_P2P_CLIENT) < 0) { 4227 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface"); 4228 return NULL; 4229 } 4230 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 4231 if (group_wpa_s == NULL) { 4232 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group " 4233 "interface"); 4234 wpas_p2p_remove_pending_group_interface(wpa_s); 4235 return NULL; 4236 } 4237 4238 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 4239 group_wpa_s->ifname); 4240 return group_wpa_s; 4241} 4242 4243 4244/** 4245 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 4246 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4247 * @persistent_group: Whether to create a persistent group 4248 * @freq: Frequency for the group or 0 to indicate no hardcoding 4249 * Returns: 0 on success, -1 on failure 4250 * 4251 * This function creates a new P2P group with the local end as the Group Owner, 4252 * i.e., without using Group Owner Negotiation. 4253 */ 4254int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 4255 int freq, int ht40) 4256{ 4257 struct p2p_go_neg_results params; 4258 unsigned int r; 4259 4260 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4261 return -1; 4262 4263 /* Make sure we are not running find during connection establishment */ 4264 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 4265 wpas_p2p_stop_find_oper(wpa_s); 4266 4267 if (freq == 2) { 4268 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 4269 "band"); 4270 if (wpa_s->best_24_freq > 0 && 4271 p2p_supported_freq(wpa_s->global->p2p, 4272 wpa_s->best_24_freq)) { 4273 freq = wpa_s->best_24_freq; 4274 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 4275 "channel: %d MHz", freq); 4276 } else { 4277 os_get_random((u8 *) &r, sizeof(r)); 4278 freq = 2412 + (r % 3) * 25; 4279 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 4280 "channel: %d MHz", freq); 4281 } 4282 } 4283 4284 if (freq == 5) { 4285 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 4286 "band"); 4287 if (wpa_s->best_5_freq > 0 && 4288 p2p_supported_freq(wpa_s->global->p2p, 4289 wpa_s->best_5_freq)) { 4290 freq = wpa_s->best_5_freq; 4291 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 4292 "channel: %d MHz", freq); 4293 } else { 4294 os_get_random((u8 *) &r, sizeof(r)); 4295 freq = 5180 + (r % 4) * 20; 4296 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 4297 wpa_printf(MSG_DEBUG, "P2P: Could not select " 4298 "5 GHz channel for P2P group"); 4299 return -1; 4300 } 4301 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 4302 "channel: %d MHz", freq); 4303 } 4304 } 4305 4306 if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { 4307 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 4308 "(%u MHz) is not supported for P2P uses", 4309 freq); 4310 return -1; 4311 } 4312 4313 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, NULL)) 4314 return -1; 4315 if (params.freq && 4316 !p2p_supported_freq(wpa_s->global->p2p, params.freq)) { 4317 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " 4318 "(%u MHz) is not supported for P2P uses", 4319 params.freq); 4320 return -1; 4321 } 4322 p2p_go_params(wpa_s->global->p2p, ¶ms); 4323 params.persistent_group = persistent_group; 4324 4325 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 4326 if (wpa_s == NULL) 4327 return -1; 4328 wpas_start_wps_go(wpa_s, ¶ms, 0); 4329 4330 return 0; 4331} 4332 4333 4334static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 4335 struct wpa_ssid *params, int addr_allocated) 4336{ 4337 struct wpa_ssid *ssid; 4338 4339 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 4340 if (wpa_s == NULL) 4341 return -1; 4342 4343 wpa_supplicant_ap_deinit(wpa_s); 4344 4345 ssid = wpa_config_add_network(wpa_s->conf); 4346 if (ssid == NULL) 4347 return -1; 4348 wpa_config_set_network_defaults(ssid); 4349 ssid->temporary = 1; 4350 ssid->proto = WPA_PROTO_RSN; 4351 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 4352 ssid->group_cipher = WPA_CIPHER_CCMP; 4353 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 4354 ssid->ssid = os_malloc(params->ssid_len); 4355 if (ssid->ssid == NULL) { 4356 wpa_config_remove_network(wpa_s->conf, ssid->id); 4357 return -1; 4358 } 4359 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 4360 ssid->ssid_len = params->ssid_len; 4361 ssid->p2p_group = 1; 4362 ssid->export_keys = 1; 4363 if (params->psk_set) { 4364 os_memcpy(ssid->psk, params->psk, 32); 4365 ssid->psk_set = 1; 4366 } 4367 if (params->passphrase) 4368 ssid->passphrase = os_strdup(params->passphrase); 4369 4370 wpa_supplicant_select_network(wpa_s, ssid); 4371 4372 wpa_s->show_group_started = 1; 4373 4374 return 0; 4375} 4376 4377 4378int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 4379 struct wpa_ssid *ssid, int addr_allocated, 4380 int freq, int ht40, 4381 const struct p2p_channels *channels) 4382{ 4383 struct p2p_go_neg_results params; 4384 int go = 0; 4385 4386 if (ssid->disabled != 2 || ssid->ssid == NULL) 4387 return -1; 4388 4389 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 4390 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 4391 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 4392 "already running"); 4393 return 0; 4394 } 4395 4396 /* Make sure we are not running find during connection establishment */ 4397 wpas_p2p_stop_find_oper(wpa_s); 4398 4399 wpa_s->p2p_fallback_to_go_neg = 0; 4400 4401 if (ssid->mode == WPAS_MODE_INFRA) 4402 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); 4403 4404 if (ssid->mode != WPAS_MODE_P2P_GO) 4405 return -1; 4406 4407 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, channels)) 4408 return -1; 4409 4410 params.role_go = 1; 4411 params.psk_set = ssid->psk_set; 4412 if (params.psk_set) 4413 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 4414 if (ssid->passphrase) { 4415 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 4416 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 4417 "persistent group"); 4418 return -1; 4419 } 4420 os_strlcpy(params.passphrase, ssid->passphrase, 4421 sizeof(params.passphrase)); 4422 } 4423 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 4424 params.ssid_len = ssid->ssid_len; 4425 params.persistent_group = 1; 4426 4427 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 4428 if (wpa_s == NULL) 4429 return -1; 4430 4431 wpas_start_wps_go(wpa_s, ¶ms, 0); 4432 4433 return 0; 4434} 4435 4436 4437static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 4438 struct wpabuf *proberesp_ies) 4439{ 4440 struct wpa_supplicant *wpa_s = ctx; 4441 if (wpa_s->ap_iface) { 4442 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 4443 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 4444 wpabuf_free(beacon_ies); 4445 wpabuf_free(proberesp_ies); 4446 return; 4447 } 4448 if (beacon_ies) { 4449 wpabuf_free(hapd->p2p_beacon_ie); 4450 hapd->p2p_beacon_ie = beacon_ies; 4451 } 4452 wpabuf_free(hapd->p2p_probe_resp_ie); 4453 hapd->p2p_probe_resp_ie = proberesp_ies; 4454 } else { 4455 wpabuf_free(beacon_ies); 4456 wpabuf_free(proberesp_ies); 4457 } 4458 wpa_supplicant_ap_update_beacon(wpa_s); 4459} 4460 4461 4462static void wpas_p2p_idle_update(void *ctx, int idle) 4463{ 4464 struct wpa_supplicant *wpa_s = ctx; 4465 if (!wpa_s->ap_iface) 4466 return; 4467 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 4468 if (idle) 4469 wpas_p2p_set_group_idle_timeout(wpa_s); 4470 else 4471 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4472} 4473 4474 4475struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 4476 struct wpa_ssid *ssid) 4477{ 4478 struct p2p_group *group; 4479 struct p2p_group_config *cfg; 4480 4481 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4482 return NULL; 4483 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4484 return NULL; 4485 4486 cfg = os_zalloc(sizeof(*cfg)); 4487 if (cfg == NULL) 4488 return NULL; 4489 4490 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 4491 cfg->persistent_group = 2; 4492 else if (ssid->p2p_persistent_group) 4493 cfg->persistent_group = 1; 4494 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 4495 if (wpa_s->max_stations && 4496 wpa_s->max_stations < wpa_s->conf->max_num_sta) 4497 cfg->max_clients = wpa_s->max_stations; 4498 else 4499 cfg->max_clients = wpa_s->conf->max_num_sta; 4500 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 4501 cfg->ssid_len = ssid->ssid_len; 4502 cfg->cb_ctx = wpa_s; 4503 cfg->ie_update = wpas_p2p_ie_update; 4504 cfg->idle_update = wpas_p2p_idle_update; 4505 4506 group = p2p_group_init(wpa_s->global->p2p, cfg); 4507 if (group == NULL) 4508 os_free(cfg); 4509 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 4510 p2p_group_notif_formation_done(group); 4511 wpa_s->p2p_group = group; 4512 return group; 4513} 4514 4515 4516void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4517 int registrar) 4518{ 4519 struct wpa_ssid *ssid = wpa_s->current_ssid; 4520 4521 if (!wpa_s->p2p_in_provisioning) { 4522 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 4523 "provisioning not in progress"); 4524 return; 4525 } 4526 4527 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4528 u8 go_dev_addr[ETH_ALEN]; 4529 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 4530 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4531 ssid->ssid_len); 4532 /* Clear any stored provisioning info */ 4533 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 4534 } 4535 4536 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 4537 NULL); 4538 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4539 /* 4540 * Use a separate timeout for initial data connection to 4541 * complete to allow the group to be removed automatically if 4542 * something goes wrong in this step before the P2P group idle 4543 * timeout mechanism is taken into use. 4544 */ 4545 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 4546 wpas_p2p_group_formation_timeout, 4547 wpa_s->parent, NULL); 4548 } 4549 if (wpa_s->global->p2p) 4550 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 4551 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4552 wpa_drv_wps_success_cb(wpa_s, peer_addr); 4553 wpas_group_formation_completed(wpa_s, 1); 4554} 4555 4556 4557void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 4558 struct wps_event_fail *fail) 4559{ 4560 if (!wpa_s->p2p_in_provisioning) { 4561 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 4562 "provisioning not in progress"); 4563 return; 4564 } 4565 4566 if (wpa_s->go_params) { 4567 p2p_clear_provisioning_info( 4568 wpa_s->global->p2p, 4569 wpa_s->go_params->peer_device_addr); 4570 } 4571 4572 wpas_notify_p2p_wps_failed(wpa_s, fail); 4573} 4574 4575 4576int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4577 const char *config_method, 4578 enum wpas_p2p_prov_disc_use use) 4579{ 4580 u16 config_methods; 4581 4582 wpa_s->p2p_fallback_to_go_neg = 0; 4583 wpa_s->pending_pd_use = NORMAL_PD; 4584 if (os_strncmp(config_method, "display", 7) == 0) 4585 config_methods = WPS_CONFIG_DISPLAY; 4586 else if (os_strncmp(config_method, "keypad", 6) == 0) 4587 config_methods = WPS_CONFIG_KEYPAD; 4588 else if (os_strncmp(config_method, "pbc", 3) == 0 || 4589 os_strncmp(config_method, "pushbutton", 10) == 0) 4590 config_methods = WPS_CONFIG_PUSHBUTTON; 4591 else { 4592 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 4593 return -1; 4594 } 4595 4596 if (use == WPAS_P2P_PD_AUTO) { 4597 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 4598 wpa_s->pending_pd_config_methods = config_methods; 4599 wpa_s->p2p_auto_pd = 1; 4600 wpa_s->p2p_auto_join = 0; 4601 wpa_s->pending_pd_before_join = 0; 4602 wpa_s->auto_pd_scan_retry = 0; 4603 wpas_p2p_stop_find(wpa_s); 4604 wpa_s->p2p_join_scan_count = 0; 4605 os_get_time(&wpa_s->p2p_auto_started); 4606 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 4607 wpa_s->p2p_auto_started.sec, 4608 wpa_s->p2p_auto_started.usec); 4609 wpas_p2p_join_scan(wpa_s, NULL); 4610 return 0; 4611 } 4612 4613 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4614 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, 4615 config_methods, 4616 use == WPAS_P2P_PD_FOR_JOIN); 4617 } 4618 4619 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 4620 return -1; 4621 4622 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 4623 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 4624 0, 1); 4625} 4626 4627 4628int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 4629 char *end) 4630{ 4631 return p2p_scan_result_text(ies, ies_len, buf, end); 4632} 4633 4634 4635static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 4636{ 4637 if (!offchannel_pending_action_tx(wpa_s)) 4638 return; 4639 4640 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 4641 "operation request"); 4642 offchannel_clear_pending_action_tx(wpa_s); 4643} 4644 4645 4646int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 4647 enum p2p_discovery_type type, 4648 unsigned int num_req_dev_types, const u8 *req_dev_types, 4649 const u8 *dev_id, unsigned int search_delay) 4650{ 4651 wpas_p2p_clear_pending_action_tx(wpa_s); 4652 wpa_s->p2p_long_listen = 0; 4653 4654 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4655 return wpa_drv_p2p_find(wpa_s, timeout, type); 4656 4657 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 4658 wpa_s->p2p_in_provisioning) 4659 return -1; 4660 4661 wpa_supplicant_cancel_sched_scan(wpa_s); 4662 4663 return p2p_find(wpa_s->global->p2p, timeout, type, 4664 num_req_dev_types, req_dev_types, dev_id, 4665 search_delay); 4666} 4667 4668 4669static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 4670{ 4671 wpas_p2p_clear_pending_action_tx(wpa_s); 4672 wpa_s->p2p_long_listen = 0; 4673 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4674 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4675 wpa_s->global->p2p_cb_on_scan_complete = 0; 4676 4677 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4678 wpa_drv_p2p_stop_find(wpa_s); 4679 return 1; 4680 } 4681 4682 if (wpa_s->global->p2p) 4683 p2p_stop_find(wpa_s->global->p2p); 4684 4685 return 0; 4686} 4687 4688 4689void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 4690{ 4691 if (wpas_p2p_stop_find_oper(wpa_s) > 0) 4692 return; 4693 wpas_p2p_remove_pending_group_interface(wpa_s); 4694} 4695 4696 4697static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4698{ 4699 struct wpa_supplicant *wpa_s = eloop_ctx; 4700 wpa_s->p2p_long_listen = 0; 4701} 4702 4703 4704int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 4705{ 4706 int res; 4707 4708 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4709 return -1; 4710 4711 wpa_supplicant_cancel_sched_scan(wpa_s); 4712 wpas_p2p_clear_pending_action_tx(wpa_s); 4713 4714 if (timeout == 0) { 4715 /* 4716 * This is a request for unlimited Listen state. However, at 4717 * least for now, this is mapped to a Listen state for one 4718 * hour. 4719 */ 4720 timeout = 3600; 4721 } 4722 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4723 wpa_s->p2p_long_listen = 0; 4724 4725 /* 4726 * Stop previous find/listen operation to avoid trying to request a new 4727 * remain-on-channel operation while the driver is still running the 4728 * previous one. 4729 */ 4730 if (wpa_s->global->p2p) 4731 p2p_stop_find(wpa_s->global->p2p); 4732 4733 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 4734 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 4735 wpa_s->p2p_long_listen = timeout * 1000; 4736 eloop_register_timeout(timeout, 0, 4737 wpas_p2p_long_listen_timeout, 4738 wpa_s, NULL); 4739 } 4740 4741 return res; 4742} 4743 4744 4745int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 4746 u8 *buf, size_t len, int p2p_group) 4747{ 4748 struct wpabuf *p2p_ie; 4749 int ret; 4750 4751 if (wpa_s->global->p2p_disabled) 4752 return -1; 4753 if (wpa_s->global->p2p == NULL) 4754 return -1; 4755 if (bss == NULL) 4756 return -1; 4757 4758 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 4759 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 4760 p2p_group, p2p_ie); 4761 wpabuf_free(p2p_ie); 4762 4763 return ret; 4764} 4765 4766 4767int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 4768 const u8 *dst, const u8 *bssid, 4769 const u8 *ie, size_t ie_len, int ssi_signal) 4770{ 4771 if (wpa_s->global->p2p_disabled) 4772 return 0; 4773 if (wpa_s->global->p2p == NULL) 4774 return 0; 4775 4776 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 4777 ie, ie_len)) { 4778 case P2P_PREQ_NOT_P2P: 4779 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 4780 ssi_signal); 4781 /* fall through */ 4782 case P2P_PREQ_MALFORMED: 4783 case P2P_PREQ_NOT_LISTEN: 4784 case P2P_PREQ_NOT_PROCESSED: 4785 default: /* make gcc happy */ 4786 return 0; 4787 case P2P_PREQ_PROCESSED: 4788 return 1; 4789 } 4790} 4791 4792 4793void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 4794 const u8 *sa, const u8 *bssid, 4795 u8 category, const u8 *data, size_t len, int freq) 4796{ 4797 if (wpa_s->global->p2p_disabled) 4798 return; 4799 if (wpa_s->global->p2p == NULL) 4800 return; 4801 4802 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 4803 freq); 4804} 4805 4806 4807void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 4808{ 4809 if (wpa_s->global->p2p_disabled) 4810 return; 4811 if (wpa_s->global->p2p == NULL) 4812 return; 4813 4814 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4815} 4816 4817 4818void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 4819{ 4820 p2p_group_deinit(wpa_s->p2p_group); 4821 wpa_s->p2p_group = NULL; 4822 4823 wpa_s->ap_configured_cb = NULL; 4824 wpa_s->ap_configured_cb_ctx = NULL; 4825 wpa_s->ap_configured_cb_data = NULL; 4826 wpa_s->connect_without_scan = NULL; 4827} 4828 4829 4830int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 4831{ 4832 wpa_s->p2p_long_listen = 0; 4833 4834 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4835 return wpa_drv_p2p_reject(wpa_s, addr); 4836 4837 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4838 return -1; 4839 4840 return p2p_reject(wpa_s->global->p2p, addr); 4841} 4842 4843 4844/* Invite to reinvoke a persistent group */ 4845int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4846 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 4847 int ht40, int pref_freq) 4848{ 4849 enum p2p_invite_role role; 4850 u8 *bssid = NULL, bssid_buf[ETH_ALEN]; 4851 int force_freq = 0, oper_freq = 0; 4852 int res; 4853 4854 wpa_s->global->p2p_invite_group = NULL; 4855 if (peer_addr) 4856 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 4857 else 4858 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 4859 4860 wpa_s->p2p_persistent_go_freq = freq; 4861 wpa_s->p2p_go_ht40 = !!ht40; 4862 if (ssid->mode == WPAS_MODE_P2P_GO) { 4863 role = P2P_INVITE_ROLE_GO; 4864 if (peer_addr == NULL) { 4865 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 4866 "address in invitation command"); 4867 return -1; 4868 } 4869 if (wpas_p2p_create_iface(wpa_s)) { 4870 if (wpas_p2p_add_group_interface(wpa_s, 4871 WPA_IF_P2P_GO) < 0) { 4872 wpa_printf(MSG_ERROR, "P2P: Failed to " 4873 "allocate a new interface for the " 4874 "group"); 4875 return -1; 4876 } 4877 bssid = wpa_s->pending_interface_addr; 4878 } else 4879 bssid = wpa_s->own_addr; 4880 } else { 4881 role = P2P_INVITE_ROLE_CLIENT; 4882 peer_addr = ssid->bssid; 4883 } 4884 wpa_s->pending_invite_ssid_id = ssid->id; 4885 4886 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 && 4887 wpa_s->assoc_freq) { 4888 oper_freq = wpa_s->assoc_freq; 4889 if (bssid == NULL) 4890 bssid = bssid_buf; 4891 } else { 4892 oper_freq = wpa_drv_shared_freq(wpa_s); 4893 if (oper_freq < 0) 4894 oper_freq = 0; 4895 } 4896 4897 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 4898 &oper_freq); 4899 if (res) 4900 return res; 4901 4902 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4903 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4904 ssid->ssid, ssid->ssid_len, 4905 go_dev_addr, 1); 4906 4907 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4908 return -1; 4909 4910 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4911 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 4912 1, pref_freq); 4913} 4914 4915 4916/* Invite to join an active group */ 4917int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 4918 const u8 *peer_addr, const u8 *go_dev_addr) 4919{ 4920 struct wpa_global *global = wpa_s->global; 4921 enum p2p_invite_role role; 4922 u8 *bssid = NULL, bssid_buf[ETH_ALEN]; 4923 struct wpa_ssid *ssid; 4924 int persistent; 4925 int force_freq = 0, oper_freq = 0, pref_freq = 0; 4926 int res; 4927 4928 wpa_s->p2p_persistent_go_freq = 0; 4929 wpa_s->p2p_go_ht40 = 0; 4930 4931 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4932 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4933 break; 4934 } 4935 if (wpa_s == NULL) { 4936 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 4937 return -1; 4938 } 4939 4940 ssid = wpa_s->current_ssid; 4941 if (ssid == NULL) { 4942 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 4943 "invitation"); 4944 return -1; 4945 } 4946 4947 wpa_s->global->p2p_invite_group = wpa_s; 4948 persistent = ssid->p2p_persistent_group && 4949 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 4950 ssid->ssid, ssid->ssid_len); 4951 4952 if (ssid->mode == WPAS_MODE_P2P_GO) { 4953 role = P2P_INVITE_ROLE_ACTIVE_GO; 4954 bssid = wpa_s->own_addr; 4955 if (go_dev_addr == NULL) 4956 go_dev_addr = wpa_s->global->p2p_dev_addr; 4957 } else { 4958 role = P2P_INVITE_ROLE_CLIENT; 4959 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 4960 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 4961 "invite to current group"); 4962 return -1; 4963 } 4964 bssid = wpa_s->bssid; 4965 if (go_dev_addr == NULL && 4966 !is_zero_ether_addr(wpa_s->go_dev_addr)) 4967 go_dev_addr = wpa_s->go_dev_addr; 4968 } 4969 wpa_s->parent->pending_invite_ssid_id = -1; 4970 4971 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4972 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4973 ssid->ssid, ssid->ssid_len, 4974 go_dev_addr, persistent); 4975 4976 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4977 return -1; 4978 4979 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 && 4980 wpa_s->assoc_freq) { 4981 oper_freq = wpa_s->assoc_freq; 4982 if (bssid == NULL) 4983 bssid = bssid_buf; 4984 } else { 4985 oper_freq = wpa_drv_shared_freq(wpa_s); 4986 if (oper_freq < 0) 4987 oper_freq = 0; 4988 } 4989 4990 res = wpas_p2p_setup_freqs(wpa_s, 0, &force_freq, &pref_freq, 4991 &oper_freq); 4992 if (res) 4993 return res; 4994 wpas_p2p_set_own_freq_preference(wpa_s, oper_freq); 4995 4996 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4997 ssid->ssid, ssid->ssid_len, force_freq, 4998 go_dev_addr, persistent, pref_freq); 4999} 5000 5001 5002void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 5003{ 5004 struct wpa_ssid *ssid = wpa_s->current_ssid; 5005 const char *ssid_txt; 5006 u8 go_dev_addr[ETH_ALEN]; 5007 int network_id = -1; 5008 int persistent; 5009 int freq; 5010 5011 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 5012 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5013 wpa_s->parent, NULL); 5014 } 5015 5016 if (!wpa_s->show_group_started || !ssid) 5017 goto done; 5018 5019 wpa_s->show_group_started = 0; 5020 5021 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 5022 os_memset(go_dev_addr, 0, ETH_ALEN); 5023 if (ssid->bssid_set) 5024 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 5025 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 5026 ssid->ssid_len); 5027 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 5028 5029 if (wpa_s->global->p2p_group_formation == wpa_s) 5030 wpa_s->global->p2p_group_formation = NULL; 5031 5032 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 5033 (int) wpa_s->assoc_freq; 5034 if (ssid->passphrase == NULL && ssid->psk_set) { 5035 char psk[65]; 5036 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 5037 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 5038 "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 5039 MACSTR "%s", 5040 wpa_s->ifname, ssid_txt, freq, psk, 5041 MAC2STR(go_dev_addr), 5042 persistent ? " [PERSISTENT]" : ""); 5043 } else { 5044 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 5045 "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " 5046 "go_dev_addr=" MACSTR "%s", 5047 wpa_s->ifname, ssid_txt, freq, 5048 ssid->passphrase ? ssid->passphrase : "", 5049 MAC2STR(go_dev_addr), 5050 persistent ? " [PERSISTENT]" : ""); 5051 } 5052 5053 if (persistent) 5054 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 5055 ssid, go_dev_addr); 5056 if (network_id < 0) 5057 network_id = ssid->id; 5058 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 5059 5060done: 5061 wpas_p2p_continue_after_scan(wpa_s); 5062} 5063 5064 5065int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 5066 u32 interval1, u32 duration2, u32 interval2) 5067{ 5068 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5069 return -1; 5070 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5071 return -1; 5072 5073 if (wpa_s->wpa_state < WPA_ASSOCIATED || 5074 wpa_s->current_ssid == NULL || 5075 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 5076 return -1; 5077 5078 return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 5079 wpa_s->own_addr, wpa_s->assoc_freq, 5080 duration1, interval1, duration2, interval2); 5081} 5082 5083 5084int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 5085 unsigned int interval) 5086{ 5087 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5088 return -1; 5089 5090 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5091 return -1; 5092 5093 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 5094} 5095 5096 5097static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 5098{ 5099 if (wpa_s->current_ssid == NULL) { 5100 /* 5101 * current_ssid can be cleared when P2P client interface gets 5102 * disconnected, so assume this interface was used as P2P 5103 * client. 5104 */ 5105 return 1; 5106 } 5107 return wpa_s->current_ssid->p2p_group && 5108 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 5109} 5110 5111 5112static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 5113{ 5114 struct wpa_supplicant *wpa_s = eloop_ctx; 5115 5116 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 5117 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 5118 "disabled"); 5119 return; 5120 } 5121 5122 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 5123 "group"); 5124 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 5125} 5126 5127 5128static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 5129{ 5130 int timeout; 5131 5132 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 5133 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 5134 5135 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 5136 return; 5137 5138 timeout = wpa_s->conf->p2p_group_idle; 5139 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 5140 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 5141 timeout = P2P_MAX_CLIENT_IDLE; 5142 5143 if (timeout == 0) 5144 return; 5145 5146 if (timeout < 0) { 5147 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 5148 timeout = 0; /* special client mode no-timeout */ 5149 else 5150 return; 5151 } 5152 5153 if (wpa_s->p2p_in_provisioning) { 5154 /* 5155 * Use the normal group formation timeout during the 5156 * provisioning phase to avoid terminating this process too 5157 * early due to group idle timeout. 5158 */ 5159 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 5160 "during provisioning"); 5161 return; 5162 } 5163#ifndef ANDROID_P2P 5164 if (wpa_s->show_group_started) { 5165 /* 5166 * Use the normal group formation timeout between the end of 5167 * the provisioning phase and completion of 4-way handshake to 5168 * avoid terminating this process too early due to group idle 5169 * timeout. 5170 */ 5171 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 5172 "while waiting for initial 4-way handshake to " 5173 "complete"); 5174 return; 5175 } 5176#endif 5177 5178 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 5179 timeout); 5180 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 5181 wpa_s, NULL); 5182} 5183 5184 5185/* Returns 1 if the interface was removed */ 5186int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 5187 u16 reason_code, const u8 *ie, size_t ie_len, 5188 int locally_generated) 5189{ 5190 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5191 return 0; 5192 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5193 return 0; 5194 5195 if (!locally_generated) 5196 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 5197 ie_len); 5198 5199 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 5200 wpa_s->current_ssid && 5201 wpa_s->current_ssid->p2p_group && 5202 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 5203 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 5204 "session is ending"); 5205 if (wpas_p2p_group_delete(wpa_s, 5206 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 5207 > 0) 5208 return 1; 5209 } 5210 5211 return 0; 5212} 5213 5214 5215void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 5216 u16 reason_code, const u8 *ie, size_t ie_len, 5217 int locally_generated) 5218{ 5219 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5220 return; 5221 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5222 return; 5223 5224 if (!locally_generated) 5225 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 5226 ie_len); 5227} 5228 5229 5230void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 5231{ 5232 struct p2p_data *p2p = wpa_s->global->p2p; 5233 5234 if (p2p == NULL) 5235 return; 5236 5237 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 5238 return; 5239 5240 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 5241 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 5242 5243 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 5244 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 5245 5246 if (wpa_s->wps && 5247 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 5248 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 5249 5250 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 5251 p2p_set_uuid(p2p, wpa_s->wps->uuid); 5252 5253 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 5254 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 5255 p2p_set_model_name(p2p, wpa_s->conf->model_name); 5256 p2p_set_model_number(p2p, wpa_s->conf->model_number); 5257 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 5258 } 5259 5260 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 5261 p2p_set_sec_dev_types(p2p, 5262 (void *) wpa_s->conf->sec_device_type, 5263 wpa_s->conf->num_sec_device_types); 5264 5265 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 5266 int i; 5267 p2p_remove_wps_vendor_extensions(p2p); 5268 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 5269 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 5270 continue; 5271 p2p_add_wps_vendor_extension( 5272 p2p, wpa_s->conf->wps_vendor_ext[i]); 5273 } 5274 } 5275 5276 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 5277 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 5278 char country[3]; 5279 country[0] = wpa_s->conf->country[0]; 5280 country[1] = wpa_s->conf->country[1]; 5281 country[2] = 0x04; 5282 p2p_set_country(p2p, country); 5283 } 5284 5285 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 5286 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 5287 wpa_s->conf->p2p_ssid_postfix ? 5288 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 5289 0); 5290 } 5291 5292 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 5293 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 5294 5295 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 5296 u8 reg_class, channel; 5297 int ret; 5298 unsigned int r; 5299 if (wpa_s->conf->p2p_listen_reg_class && 5300 wpa_s->conf->p2p_listen_channel) { 5301 reg_class = wpa_s->conf->p2p_listen_reg_class; 5302 channel = wpa_s->conf->p2p_listen_channel; 5303 } else { 5304 reg_class = 81; 5305 /* 5306 * Pick one of the social channels randomly as the 5307 * listen channel. 5308 */ 5309 os_get_random((u8 *) &r, sizeof(r)); 5310 channel = 1 + (r % 3) * 5; 5311 } 5312 ret = p2p_set_listen_channel(p2p, reg_class, channel); 5313 if (ret) 5314 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 5315 "failed: %d", ret); 5316 } 5317 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 5318 u8 op_reg_class, op_channel, cfg_op_channel; 5319 int ret = 0; 5320 unsigned int r; 5321 if (wpa_s->conf->p2p_oper_reg_class && 5322 wpa_s->conf->p2p_oper_channel) { 5323 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 5324 op_channel = wpa_s->conf->p2p_oper_channel; 5325 cfg_op_channel = 1; 5326 } else { 5327 op_reg_class = 81; 5328 /* 5329 * Use random operation channel from (1, 6, 11) 5330 *if no other preference is indicated. 5331 */ 5332 os_get_random((u8 *) &r, sizeof(r)); 5333 op_channel = 1 + (r % 3) * 5; 5334 cfg_op_channel = 0; 5335 } 5336 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 5337 cfg_op_channel); 5338 if (ret) 5339 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 5340 "failed: %d", ret); 5341 } 5342 5343 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 5344 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 5345 wpa_s->conf->p2p_pref_chan) < 0) { 5346 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 5347 "update failed"); 5348 } 5349 } 5350} 5351 5352 5353int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 5354 int duration) 5355{ 5356 if (!wpa_s->ap_iface) 5357 return -1; 5358 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 5359 duration); 5360} 5361 5362 5363int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 5364{ 5365 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5366 return -1; 5367 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 5368 return -1; 5369 5370 wpa_s->global->cross_connection = enabled; 5371 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 5372 5373 if (!enabled) { 5374 struct wpa_supplicant *iface; 5375 5376 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 5377 { 5378 if (iface->cross_connect_enabled == 0) 5379 continue; 5380 5381 iface->cross_connect_enabled = 0; 5382 iface->cross_connect_in_use = 0; 5383 wpa_msg(iface->parent, MSG_INFO, 5384 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5385 iface->ifname, iface->cross_connect_uplink); 5386 } 5387 } 5388 5389 return 0; 5390} 5391 5392 5393static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 5394{ 5395 struct wpa_supplicant *iface; 5396 5397 if (!uplink->global->cross_connection) 5398 return; 5399 5400 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5401 if (!iface->cross_connect_enabled) 5402 continue; 5403 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5404 0) 5405 continue; 5406 if (iface->ap_iface == NULL) 5407 continue; 5408 if (iface->cross_connect_in_use) 5409 continue; 5410 5411 iface->cross_connect_in_use = 1; 5412 wpa_msg(iface->parent, MSG_INFO, 5413 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5414 iface->ifname, iface->cross_connect_uplink); 5415 } 5416} 5417 5418 5419static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 5420{ 5421 struct wpa_supplicant *iface; 5422 5423 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5424 if (!iface->cross_connect_enabled) 5425 continue; 5426 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5427 0) 5428 continue; 5429 if (!iface->cross_connect_in_use) 5430 continue; 5431 5432 wpa_msg(iface->parent, MSG_INFO, 5433 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5434 iface->ifname, iface->cross_connect_uplink); 5435 iface->cross_connect_in_use = 0; 5436 } 5437} 5438 5439 5440void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 5441{ 5442 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 5443 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 5444 wpa_s->cross_connect_disallowed) 5445 wpas_p2p_disable_cross_connect(wpa_s); 5446 else 5447 wpas_p2p_enable_cross_connect(wpa_s); 5448 if (!wpa_s->ap_iface && 5449 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 5450 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 5451} 5452 5453 5454void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 5455{ 5456 wpas_p2p_disable_cross_connect(wpa_s); 5457 if (!wpa_s->ap_iface && 5458 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 5459 wpa_s, NULL)) 5460 wpas_p2p_set_group_idle_timeout(wpa_s); 5461} 5462 5463 5464static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 5465{ 5466 struct wpa_supplicant *iface; 5467 5468 if (!wpa_s->global->cross_connection) 5469 return; 5470 5471 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 5472 if (iface == wpa_s) 5473 continue; 5474 if (iface->drv_flags & 5475 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 5476 continue; 5477 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 5478 continue; 5479 5480 wpa_s->cross_connect_enabled = 1; 5481 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 5482 sizeof(wpa_s->cross_connect_uplink)); 5483 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 5484 "%s to %s whenever uplink is available", 5485 wpa_s->ifname, wpa_s->cross_connect_uplink); 5486 5487 if (iface->ap_iface || iface->current_ssid == NULL || 5488 iface->current_ssid->mode != WPAS_MODE_INFRA || 5489 iface->cross_connect_disallowed || 5490 iface->wpa_state != WPA_COMPLETED) 5491 break; 5492 5493 wpa_s->cross_connect_in_use = 1; 5494 wpa_msg(wpa_s->parent, MSG_INFO, 5495 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5496 wpa_s->ifname, wpa_s->cross_connect_uplink); 5497 break; 5498 } 5499} 5500 5501 5502int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 5503{ 5504 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 5505 !wpa_s->p2p_in_provisioning) 5506 return 0; /* not P2P client operation */ 5507 5508 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 5509 "session overlap"); 5510 if (wpa_s != wpa_s->parent) 5511 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 5512 5513 if (wpa_s->global->p2p) 5514 p2p_group_formation_failed(wpa_s->global->p2p); 5515 5516 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5517 wpa_s->parent, NULL); 5518 5519 wpas_group_formation_completed(wpa_s, 0); 5520 return 1; 5521} 5522 5523 5524void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 5525{ 5526 struct p2p_channels chan; 5527 5528 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 5529 return; 5530 5531 os_memset(&chan, 0, sizeof(chan)); 5532 if (wpas_p2p_setup_channels(wpa_s, &chan)) { 5533 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 5534 "channel list"); 5535 return; 5536 } 5537 5538 p2p_update_channel_list(wpa_s->global->p2p, &chan); 5539} 5540 5541 5542static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 5543 struct wpa_scan_results *scan_res) 5544{ 5545 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 5546} 5547 5548 5549int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 5550{ 5551 struct wpa_global *global = wpa_s->global; 5552 int found = 0; 5553 const u8 *peer; 5554 5555 if (global->p2p == NULL) 5556 return -1; 5557 5558 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 5559 5560 if (wpa_s->pending_interface_name[0] && 5561 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 5562 found = 1; 5563 5564 peer = p2p_get_go_neg_peer(global->p2p); 5565 if (peer) { 5566 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 5567 MACSTR, MAC2STR(peer)); 5568 p2p_unauthorize(global->p2p, peer); 5569 found = 1; 5570 } 5571 5572 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 5573 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 5574 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 5575 found = 1; 5576 } 5577 5578 if (wpa_s->pending_pd_before_join) { 5579 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 5580 wpa_s->pending_pd_before_join = 0; 5581 found = 1; 5582 } 5583 5584 wpas_p2p_stop_find(wpa_s); 5585 5586 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5587 if (wpa_s == global->p2p_group_formation && 5588 (wpa_s->p2p_in_provisioning || 5589 wpa_s->parent->pending_interface_type == 5590 WPA_IF_P2P_CLIENT)) { 5591 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 5592 "formation found - cancelling", 5593 wpa_s->ifname); 5594 found = 1; 5595 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5596 wpa_s->parent, NULL); 5597 if (wpa_s->p2p_in_provisioning) { 5598 wpas_group_formation_completed(wpa_s, 0); 5599 break; 5600 } 5601 wpas_p2p_group_delete(wpa_s, 5602 P2P_GROUP_REMOVAL_REQUESTED); 5603 break; 5604 } 5605 } 5606 5607 if (!found) { 5608 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 5609 return -1; 5610 } 5611 5612 return 0; 5613} 5614 5615 5616void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 5617{ 5618 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 5619 return; 5620 5621 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 5622 "being available anymore"); 5623 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 5624} 5625 5626 5627void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 5628 int freq_24, int freq_5, int freq_overall) 5629{ 5630 struct p2p_data *p2p = wpa_s->global->p2p; 5631 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5632 return; 5633 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 5634} 5635 5636 5637int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 5638{ 5639 u8 peer[ETH_ALEN]; 5640 struct p2p_data *p2p = wpa_s->global->p2p; 5641 5642 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5643 return -1; 5644 5645 if (hwaddr_aton(addr, peer)) 5646 return -1; 5647 5648 return p2p_unauthorize(p2p, peer); 5649} 5650 5651 5652/** 5653 * wpas_p2p_disconnect - Disconnect from a P2P Group 5654 * @wpa_s: Pointer to wpa_supplicant data 5655 * Returns: 0 on success, -1 on failure 5656 * 5657 * This can be used to disconnect from a group in which the local end is a P2P 5658 * Client or to end a P2P Group in case the local end is the Group Owner. If a 5659 * virtual network interface was created for this group, that interface will be 5660 * removed. Otherwise, only the configured P2P group network will be removed 5661 * from the interface. 5662 */ 5663int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 5664{ 5665 5666 if (wpa_s == NULL) 5667 return -1; 5668 5669 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 5670 -1 : 0; 5671} 5672 5673 5674int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 5675{ 5676 int ret; 5677 5678 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5679 return 0; 5680 5681 ret = p2p_in_progress(wpa_s->global->p2p); 5682 if (ret == 0) { 5683 /* 5684 * Check whether there is an ongoing WPS provisioning step (or 5685 * other parts of group formation) on another interface since 5686 * p2p_in_progress() does not report this to avoid issues for 5687 * scans during such provisioning step. 5688 */ 5689 if (wpa_s->global->p2p_group_formation && 5690 wpa_s->global->p2p_group_formation != wpa_s) { 5691 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 5692 "in group formation", 5693 wpa_s->global->p2p_group_formation->ifname); 5694 ret = 1; 5695 } 5696 } 5697 5698 return ret; 5699} 5700 5701 5702void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 5703 struct wpa_ssid *ssid) 5704{ 5705 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 5706 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5707 wpa_s->parent, NULL) > 0) { 5708 /** 5709 * Remove the network by scheduling the group formation 5710 * timeout to happen immediately. The teardown code 5711 * needs to be scheduled to run asynch later so that we 5712 * don't delete data from under ourselves unexpectedly. 5713 * Calling wpas_p2p_group_formation_timeout directly 5714 * causes a series of crashes in WPS failure scenarios. 5715 */ 5716 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 5717 "P2P group network getting removed"); 5718 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 5719 wpa_s->parent, NULL); 5720 } 5721} 5722 5723 5724struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 5725 const u8 *addr, const u8 *ssid, 5726 size_t ssid_len) 5727{ 5728 struct wpa_ssid *s; 5729 size_t i; 5730 5731 for (s = wpa_s->conf->ssid; s; s = s->next) { 5732 if (s->disabled != 2) 5733 continue; 5734 if (ssid && 5735 (ssid_len != s->ssid_len || 5736 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 5737 continue; 5738 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 5739 return s; /* peer is GO in the persistent group */ 5740 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 5741 continue; 5742 for (i = 0; i < s->num_p2p_clients; i++) { 5743 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 5744 addr, ETH_ALEN) == 0) 5745 return s; /* peer is P2P client in persistent 5746 * group */ 5747 } 5748 } 5749 5750 return NULL; 5751} 5752 5753 5754void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 5755 const u8 *addr) 5756{ 5757 if (addr == NULL) 5758 return; 5759 wpas_p2p_add_persistent_group_client(wpa_s, addr); 5760} 5761 5762 5763static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 5764 int group_added) 5765{ 5766 struct wpa_supplicant *group = wpa_s; 5767 if (wpa_s->global->p2p_group_formation) 5768 group = wpa_s->global->p2p_group_formation; 5769 wpa_s = wpa_s->parent; 5770 offchannel_send_action_done(wpa_s); 5771 if (group_added) 5772 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 5773 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 5774 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 5775 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 5776 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 5777 wpa_s->p2p_persistent_id, 5778 wpa_s->p2p_pd_before_go_neg, 5779 wpa_s->p2p_go_ht40); 5780} 5781 5782 5783int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 5784{ 5785 if (!wpa_s->p2p_fallback_to_go_neg || 5786 wpa_s->p2p_in_provisioning <= 5) 5787 return 0; 5788 5789 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 5790 return 0; /* peer operating as a GO */ 5791 5792 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 5793 "fallback to GO Negotiation"); 5794 wpas_p2p_fallback_to_go_neg(wpa_s, 1); 5795 5796 return 1; 5797} 5798 5799 5800unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 5801{ 5802 const char *rn, *rn2; 5803 struct wpa_supplicant *ifs; 5804 5805 if (wpa_s->wpa_state > WPA_SCANNING) { 5806 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 5807 "concurrent operation", 5808 P2P_CONCURRENT_SEARCH_DELAY); 5809 return P2P_CONCURRENT_SEARCH_DELAY; 5810 } 5811 5812 if (!wpa_s->driver->get_radio_name) 5813 return 0; 5814 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv); 5815 if (rn == NULL || rn[0] == '\0') 5816 return 0; 5817 5818 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 5819 if (ifs == wpa_s || !ifs->driver->get_radio_name) 5820 continue; 5821 5822 rn2 = ifs->driver->get_radio_name(ifs->drv_priv); 5823 if (!rn2 || os_strcmp(rn, rn2) != 0) 5824 continue; 5825 if (ifs->wpa_state > WPA_SCANNING) { 5826 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 5827 "delay due to concurrent operation on " 5828 "interface %s", 5829 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname); 5830 return P2P_CONCURRENT_SEARCH_DELAY; 5831 } 5832 } 5833 5834 return 0; 5835} 5836 5837 5838void wpas_p2p_continue_after_scan(struct wpa_supplicant *wpa_s) 5839{ 5840 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Station mode scan operation not " 5841 "pending anymore (sta_scan_pending=%d " 5842 "p2p_cb_on_scan_complete=%d)", wpa_s->sta_scan_pending, 5843 wpa_s->global->p2p_cb_on_scan_complete); 5844 wpa_s->sta_scan_pending = 0; 5845 5846 if (!wpa_s->global->p2p_cb_on_scan_complete) 5847 return; 5848 wpa_s->global->p2p_cb_on_scan_complete = 0; 5849 5850 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5851 return; 5852 5853 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 5854 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 5855 "continued after successful connection"); 5856 p2p_increase_search_delay(wpa_s->global->p2p, 5857 wpas_p2p_search_delay(wpa_s)); 5858 } 5859} 5860 5861#ifdef ANDROID_P2P 5862int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 5863 struct wpa_ssid *ssid) 5864{ 5865 struct wpa_supplicant *iface = NULL; 5866 struct p2p_data *p2p = wpa_s->global->p2p; 5867 5868 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 5869 if ((iface->current_ssid) && 5870 (iface->current_ssid->frequency != freq) && 5871 ((iface->p2p_group_interface) || 5872 (iface->current_ssid->p2p_group))) { 5873 5874 if ((iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) || 5875 (iface->current_ssid->mode == WPAS_MODE_P2P_GO)) { 5876 /* Try to see whether we can move the GO. If it 5877 * is not possible, remove the GO interface 5878 */ 5879 if (wpa_drv_switch_channel(iface, freq) == 0) { 5880 wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq); 5881 iface->current_ssid->frequency = freq; 5882 continue; 5883 } 5884 } 5885 5886 /* If GO cannot be moved or if the conflicting interface is a 5887 * P2P Client, remove the interface depending up on the connection 5888 * priority */ 5889 if(!wpas_is_p2p_prioritized(iface)) { 5890 /* STA connection has priority over existing 5891 * P2P connection. So remove the interface */ 5892 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel" 5893 "concurrent mode frequency conflict"); 5894 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 5895 /* If connection in progress is p2p connection, do not proceed for the connection */ 5896 if (wpa_s == iface) 5897 return -1; 5898 else 5899 /* If connection in progress is STA connection, proceed for the connection */ 5900 return 0; 5901 } else { 5902 /* P2p connection has priority, disable the STA network*/ 5903 wpa_supplicant_disable_network(wpa_s->global->ifaces, ssid); 5904 wpa_msg(wpa_s->global->ifaces, MSG_INFO, WPA_EVENT_FREQ_CONFLICT 5905 " id=%d", ssid->id); 5906 os_memset(wpa_s->global->ifaces->pending_bssid, 0, ETH_ALEN); 5907 if (wpa_s == iface) { 5908 /* p2p connection is in progress, continue connecting...*/ 5909 return 0; 5910 } 5911 else { 5912 /* STA connection is in progress, do not allow to continue */ 5913 return -1; 5914 } 5915 } 5916 } 5917 } 5918 return 0; 5919} 5920#endif 5921