p2p_supplicant.c revision 1cccfe8c0b59094a2564d268040478ecb278e790
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 void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, 93 void *timeout_ctx); 94static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 95static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 96static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 97static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 98static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 99 int group_added); 100 101 102static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 103 struct wpa_scan_results *scan_res) 104{ 105 size_t i; 106 107 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 108 return; 109 110 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 111 (int) scan_res->num); 112 113 for (i = 0; i < scan_res->num; i++) { 114 struct wpa_scan_res *bss = scan_res->res[i]; 115 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 116 bss->freq, bss->level, 117 (const u8 *) (bss + 1), 118 bss->ie_len) > 0) 119 break; 120 } 121 122 p2p_scan_res_handled(wpa_s->global->p2p); 123} 124 125 126static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 127 unsigned int num_req_dev_types, 128 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 129{ 130 struct wpa_supplicant *wpa_s = ctx; 131 struct wpa_supplicant *ifs; 132 struct wpa_driver_scan_params params; 133 int ret; 134 struct wpabuf *wps_ie, *ies; 135 int social_channels[] = { 2412, 2437, 2462, 0, 0 }; 136 size_t ielen; 137 138 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 139 return -1; 140 141 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 142 if (ifs->sta_scan_pending && 143 wpas_p2p_in_progress(wpa_s) == 2) { 144 wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow " 145 "pending station mode scan to be " 146 "completed on interface %s", ifs->ifname); 147 wpa_s->global->p2p_cb_on_scan_complete = 1; 148 wpa_supplicant_req_scan(ifs, 0, 0); 149 return 1; 150 } 151 } 152 153 os_memset(¶ms, 0, sizeof(params)); 154 155 /* P2P Wildcard SSID */ 156 params.num_ssids = 1; 157 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 158 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 159 160 wpa_s->wps->dev.p2p = 1; 161 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 162 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 163 num_req_dev_types, req_dev_types); 164 if (wps_ie == NULL) 165 return -1; 166 167 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 168 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 169 if (ies == NULL) { 170 wpabuf_free(wps_ie); 171 return -1; 172 } 173 wpabuf_put_buf(ies, wps_ie); 174 wpabuf_free(wps_ie); 175 176 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 177 178 params.p2p_probe = 1; 179 params.extra_ies = wpabuf_head(ies); 180 params.extra_ies_len = wpabuf_len(ies); 181 182 switch (type) { 183 case P2P_SCAN_SOCIAL: 184 params.freqs = social_channels; 185 break; 186 case P2P_SCAN_FULL: 187 break; 188 case P2P_SCAN_SPECIFIC: 189 social_channels[0] = freq; 190 social_channels[1] = 0; 191 params.freqs = social_channels; 192 break; 193 case P2P_SCAN_SOCIAL_PLUS_ONE: 194 social_channels[3] = freq; 195 params.freqs = social_channels; 196 break; 197 } 198 199 ret = wpa_drv_scan(wpa_s, ¶ms); 200 201 wpabuf_free(ies); 202 203 if (ret) { 204 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 205 if (ifs->scanning || 206 ifs->scan_res_handler == wpas_p2p_scan_res_handler) { 207 wpa_s->global->p2p_cb_on_scan_complete = 1; 208 ret = 1; 209 break; 210 } 211 } 212 } else 213 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 214 215 return ret; 216} 217 218 219static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 220{ 221 switch (p2p_group_interface) { 222 case P2P_GROUP_INTERFACE_PENDING: 223 return WPA_IF_P2P_GROUP; 224 case P2P_GROUP_INTERFACE_GO: 225 return WPA_IF_P2P_GO; 226 case P2P_GROUP_INTERFACE_CLIENT: 227 return WPA_IF_P2P_CLIENT; 228 } 229 230 return WPA_IF_P2P_GROUP; 231} 232 233 234static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 235 const u8 *ssid, 236 size_t ssid_len, int *go) 237{ 238 struct wpa_ssid *s; 239 240 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 241 for (s = wpa_s->conf->ssid; s; s = s->next) { 242 if (s->disabled != 0 || !s->p2p_group || 243 s->ssid_len != ssid_len || 244 os_memcmp(ssid, s->ssid, ssid_len) != 0) 245 continue; 246 if (s->mode == WPAS_MODE_P2P_GO && 247 s != wpa_s->current_ssid) 248 continue; 249 if (go) 250 *go = s->mode == WPAS_MODE_P2P_GO; 251 return wpa_s; 252 } 253 } 254 255 return NULL; 256} 257 258 259static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 260 enum p2p_group_removal_reason removal_reason) 261{ 262 struct wpa_ssid *ssid; 263 char *gtype; 264 const char *reason; 265 266 ssid = wpa_s->current_ssid; 267 if (ssid == NULL) { 268 /* 269 * The current SSID was not known, but there may still be a 270 * pending P2P group interface waiting for provisioning or a 271 * P2P group that is trying to reconnect. 272 */ 273 ssid = wpa_s->conf->ssid; 274 while (ssid) { 275 if (ssid->p2p_group && ssid->disabled != 2) 276 break; 277 ssid = ssid->next; 278 } 279 if (ssid == NULL && 280 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 281 { 282 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 283 "not found"); 284 return -1; 285 } 286 } 287 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 288 gtype = "GO"; 289 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 290 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 291 wpa_s->reassociate = 0; 292 wpa_s->disconnected = 1; 293 wpa_supplicant_deauthenticate(wpa_s, 294 WLAN_REASON_DEAUTH_LEAVING); 295 gtype = "client"; 296 } else 297 gtype = "GO"; 298 if (wpa_s->cross_connect_in_use) { 299 wpa_s->cross_connect_in_use = 0; 300 wpa_msg(wpa_s->parent, MSG_INFO, 301 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 302 wpa_s->ifname, wpa_s->cross_connect_uplink); 303 } 304 switch (removal_reason) { 305 case P2P_GROUP_REMOVAL_REQUESTED: 306 reason = " reason=REQUESTED"; 307 break; 308 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 309 reason = " reason=FORMATION_FAILED"; 310 break; 311 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 312 reason = " reason=IDLE"; 313 break; 314 case P2P_GROUP_REMOVAL_UNAVAILABLE: 315 reason = " reason=UNAVAILABLE"; 316 break; 317 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 318 reason = " reason=GO_ENDING_SESSION"; 319 break; 320#ifdef ANDROID_P2P 321 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 322 reason = " reason=FREQ_CONFLICT"; 323 break; 324#endif 325 default: 326 reason = ""; 327 break; 328 } 329 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 330 wpa_msg(wpa_s->parent, MSG_INFO, 331 P2P_EVENT_GROUP_REMOVED "%s %s%s", 332 wpa_s->ifname, gtype, reason); 333 } 334 335 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 336 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 337 338 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 339 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 340 341 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 342 struct wpa_global *global; 343 char *ifname; 344 enum wpa_driver_if_type type; 345 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 346 wpa_s->ifname); 347 global = wpa_s->global; 348 ifname = os_strdup(wpa_s->ifname); 349 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 350 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 351 wpa_s = global->ifaces; 352 if (wpa_s && ifname) 353 wpa_drv_if_remove(wpa_s, type, ifname); 354 os_free(ifname); 355 return 1; 356 } 357 358 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 359 if (ssid && (ssid->p2p_group || 360 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 361 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 362 int id = ssid->id; 363 if (ssid == wpa_s->current_ssid) { 364 wpa_sm_set_config(wpa_s->wpa, NULL); 365 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 366 wpa_s->current_ssid = NULL; 367 } 368 /* 369 * Networks objects created during any P2P activities are not 370 * exposed out as they might/will confuse certain non-P2P aware 371 * applications since these network objects won't behave like 372 * regular ones. 373 * 374 * Likewise, we don't send out network removed signals for such 375 * network objects. 376 */ 377 wpa_config_remove_network(wpa_s->conf, id); 378 wpa_supplicant_clear_status(wpa_s); 379 wpa_supplicant_cancel_sched_scan(wpa_s); 380 wpa_s->sta_scan_pending = 0; 381 } else { 382 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 383 "found"); 384 } 385 if (wpa_s->ap_iface) 386 wpa_supplicant_ap_deinit(wpa_s); 387 else 388 wpa_drv_deinit_p2p_cli(wpa_s); 389 390 return 0; 391} 392 393 394static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 395 u8 *go_dev_addr, 396 const u8 *ssid, size_t ssid_len) 397{ 398 struct wpa_bss *bss; 399 const u8 *bssid; 400 struct wpabuf *p2p; 401 u8 group_capab; 402 const u8 *addr; 403 404 if (wpa_s->go_params) 405 bssid = wpa_s->go_params->peer_interface_addr; 406 else 407 bssid = wpa_s->bssid; 408 409 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 410 if (bss == NULL) { 411 u8 iface_addr[ETH_ALEN]; 412 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 413 iface_addr) == 0) 414 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 415 } 416 if (bss == NULL) { 417 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 418 "group is persistent - BSS " MACSTR " not found", 419 MAC2STR(bssid)); 420 return 0; 421 } 422 423 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 424 if (p2p == NULL) { 425 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 426 "group is persistent - BSS " MACSTR 427 " did not include P2P IE", MAC2STR(bssid)); 428 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 429 (u8 *) (bss + 1), bss->ie_len); 430 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 431 ((u8 *) bss + 1) + bss->ie_len, 432 bss->beacon_ie_len); 433 return 0; 434 } 435 436 group_capab = p2p_get_group_capab(p2p); 437 addr = p2p_get_go_dev_addr(p2p); 438 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 439 "group_capab=0x%x", group_capab); 440 if (addr) { 441 os_memcpy(go_dev_addr, addr, ETH_ALEN); 442 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 443 MAC2STR(addr)); 444 } else 445 os_memset(go_dev_addr, 0, ETH_ALEN); 446 wpabuf_free(p2p); 447 448 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 449 "go_dev_addr=" MACSTR, 450 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 451 452 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 453} 454 455 456static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 457 struct wpa_ssid *ssid, 458 const u8 *go_dev_addr) 459{ 460 struct wpa_ssid *s; 461 int changed = 0; 462 463 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 464 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 465 for (s = wpa_s->conf->ssid; s; s = s->next) { 466 if (s->disabled == 2 && 467 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 468 s->ssid_len == ssid->ssid_len && 469 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 470 break; 471 } 472 473 if (s) { 474 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 475 "entry"); 476 if (ssid->passphrase && !s->passphrase) 477 changed = 1; 478 else if (ssid->passphrase && s->passphrase && 479 os_strcmp(ssid->passphrase, s->passphrase) != 0) 480 changed = 1; 481 } else { 482 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 483 "entry"); 484 changed = 1; 485 s = wpa_config_add_network(wpa_s->conf); 486 if (s == NULL) 487 return -1; 488 489 /* 490 * Instead of network_added we emit persistent_group_added 491 * notification. Also to keep the defense checks in 492 * persistent_group obj registration method, we set the 493 * relevant flags in s to designate it as a persistent group. 494 */ 495 s->p2p_group = 1; 496 s->p2p_persistent_group = 1; 497 wpas_notify_persistent_group_added(wpa_s, s); 498 wpa_config_set_network_defaults(s); 499 } 500 501 s->p2p_group = 1; 502 s->p2p_persistent_group = 1; 503 s->disabled = 2; 504 s->bssid_set = 1; 505 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 506 s->mode = ssid->mode; 507 s->auth_alg = WPA_AUTH_ALG_OPEN; 508 s->key_mgmt = WPA_KEY_MGMT_PSK; 509 s->proto = WPA_PROTO_RSN; 510 s->pairwise_cipher = WPA_CIPHER_CCMP; 511 s->export_keys = 1; 512 if (ssid->passphrase) { 513 os_free(s->passphrase); 514 s->passphrase = os_strdup(ssid->passphrase); 515 } 516 if (ssid->psk_set) { 517 s->psk_set = 1; 518 os_memcpy(s->psk, ssid->psk, 32); 519 } 520 if (s->passphrase && !s->psk_set) 521 wpa_config_update_psk(s); 522 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 523 os_free(s->ssid); 524 s->ssid = os_malloc(ssid->ssid_len); 525 } 526 if (s->ssid) { 527 s->ssid_len = ssid->ssid_len; 528 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 529 } 530 531#ifndef CONFIG_NO_CONFIG_WRITE 532 if (changed && wpa_s->conf->update_config && 533 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 534 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 535 } 536#endif /* CONFIG_NO_CONFIG_WRITE */ 537 538 return s->id; 539} 540 541 542static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 543 const u8 *addr) 544{ 545 struct wpa_ssid *ssid, *s; 546 u8 *n; 547 size_t i; 548 int found = 0; 549 550 ssid = wpa_s->current_ssid; 551 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 552 !ssid->p2p_persistent_group) 553 return; 554 555 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 556 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 557 continue; 558 559 if (s->ssid_len == ssid->ssid_len && 560 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 561 break; 562 } 563 564 if (s == NULL) 565 return; 566 567 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 568 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 569 ETH_ALEN) != 0) 570 continue; 571 572 if (i == s->num_p2p_clients - 1) 573 return; /* already the most recent entry */ 574 575 /* move the entry to mark it most recent */ 576 os_memmove(s->p2p_client_list + i * ETH_ALEN, 577 s->p2p_client_list + (i + 1) * ETH_ALEN, 578 (s->num_p2p_clients - i - 1) * ETH_ALEN); 579 os_memcpy(s->p2p_client_list + 580 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN); 581 found = 1; 582 break; 583 } 584 585 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 586 n = os_realloc_array(s->p2p_client_list, 587 s->num_p2p_clients + 1, ETH_ALEN); 588 if (n == NULL) 589 return; 590 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 591 s->p2p_client_list = n; 592 s->num_p2p_clients++; 593 } else if (!found) { 594 /* Not enough room for an additional entry - drop the oldest 595 * entry */ 596 os_memmove(s->p2p_client_list, 597 s->p2p_client_list + ETH_ALEN, 598 (s->num_p2p_clients - 1) * ETH_ALEN); 599 os_memcpy(s->p2p_client_list + 600 (s->num_p2p_clients - 1) * ETH_ALEN, 601 addr, ETH_ALEN); 602 } 603 604#ifndef CONFIG_NO_CONFIG_WRITE 605 if (wpa_s->parent->conf->update_config && 606 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 607 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 608#endif /* CONFIG_NO_CONFIG_WRITE */ 609} 610 611 612static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 613 int success) 614{ 615 struct wpa_ssid *ssid; 616 const char *ssid_txt; 617 int client; 618 int persistent; 619 u8 go_dev_addr[ETH_ALEN]; 620 int network_id = -1; 621 622 /* 623 * This callback is likely called for the main interface. Update wpa_s 624 * to use the group interface if a new interface was created for the 625 * group. 626 */ 627 if (wpa_s->global->p2p_group_formation) 628 wpa_s = wpa_s->global->p2p_group_formation; 629 wpa_s->global->p2p_group_formation = NULL; 630 wpa_s->p2p_in_provisioning = 0; 631 632 if (!success) { 633 wpa_msg(wpa_s->parent, MSG_INFO, 634 P2P_EVENT_GROUP_FORMATION_FAILURE); 635 wpas_p2p_group_delete(wpa_s, 636 P2P_GROUP_REMOVAL_FORMATION_FAILED); 637 return; 638 } 639 640 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); 641 642 ssid = wpa_s->current_ssid; 643 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 644 ssid->mode = WPAS_MODE_P2P_GO; 645 p2p_group_notif_formation_done(wpa_s->p2p_group); 646 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 647 } 648 649 persistent = 0; 650 if (ssid) { 651 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 652 client = ssid->mode == WPAS_MODE_INFRA; 653 if (ssid->mode == WPAS_MODE_P2P_GO) { 654 persistent = ssid->p2p_persistent_group; 655 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 656 ETH_ALEN); 657 } else 658 persistent = wpas_p2p_persistent_group(wpa_s, 659 go_dev_addr, 660 ssid->ssid, 661 ssid->ssid_len); 662 } else { 663 ssid_txt = ""; 664 client = wpa_s->p2p_group_interface == 665 P2P_GROUP_INTERFACE_CLIENT; 666 os_memset(go_dev_addr, 0, ETH_ALEN); 667 } 668 669 wpa_s->show_group_started = 0; 670 if (client) { 671 /* 672 * Indicate event only after successfully completed 4-way 673 * handshake, i.e., when the interface is ready for data 674 * packets. 675 */ 676 wpa_s->show_group_started = 1; 677#ifdef ANDROID_P2P 678 /* For client Second phase of Group formation (4-way handshake) can be still pending 679 * So we need to restore wpa_s->global->p2p_group_formation */ 680 wpa_printf(MSG_INFO, "Restoring back wpa_s->global->p2p_group_formation to wpa_s %p\n", wpa_s); 681 wpa_s->global->p2p_group_formation = wpa_s; 682#endif 683 684 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 685 char psk[65]; 686 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 687 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 688 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR 689 "%s", 690 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 691 MAC2STR(go_dev_addr), 692 persistent ? " [PERSISTENT]" : ""); 693 wpas_p2p_cross_connect_setup(wpa_s); 694 wpas_p2p_set_group_idle_timeout(wpa_s); 695 } else { 696 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 697 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 698 "go_dev_addr=" MACSTR "%s", 699 wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, 700 ssid && ssid->passphrase ? ssid->passphrase : "", 701 MAC2STR(go_dev_addr), 702 persistent ? " [PERSISTENT]" : ""); 703 wpas_p2p_cross_connect_setup(wpa_s); 704 wpas_p2p_set_group_idle_timeout(wpa_s); 705 } 706 707 if (persistent) 708 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 709 ssid, go_dev_addr); 710 if (network_id < 0 && ssid) 711 network_id = ssid->id; 712 if (!client) 713 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 714} 715 716 717static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 718 unsigned int freq, 719 const u8 *dst, const u8 *src, 720 const u8 *bssid, 721 const u8 *data, size_t data_len, 722 enum offchannel_send_action_result 723 result) 724{ 725 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 726 727 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 728 return; 729 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 730 return; 731 732 switch (result) { 733 case OFFCHANNEL_SEND_ACTION_SUCCESS: 734 res = P2P_SEND_ACTION_SUCCESS; 735 break; 736 case OFFCHANNEL_SEND_ACTION_NO_ACK: 737 res = P2P_SEND_ACTION_NO_ACK; 738 break; 739 case OFFCHANNEL_SEND_ACTION_FAILED: 740 res = P2P_SEND_ACTION_FAILED; 741 break; 742 } 743 744 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 745 746 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 747 wpa_s->pending_pd_before_join && 748 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 749 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 750 wpa_s->pending_pd_before_join = 0; 751 if (wpa_s->p2p_fallback_to_go_neg) { 752 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 753 "during p2p_connect-auto"); 754 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 755 return; 756 } 757 758 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 759 "join-existing-group operation (no ACK for PD " 760 "Req)"); 761 wpas_p2p_join_start(wpa_s); 762 } 763} 764 765 766static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 767 const u8 *src, const u8 *bssid, const u8 *buf, 768 size_t len, unsigned int wait_time) 769{ 770 struct wpa_supplicant *wpa_s = ctx; 771 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 772 wait_time, 773 wpas_p2p_send_action_tx_status, 1); 774} 775 776 777static void wpas_send_action_done(void *ctx) 778{ 779 struct wpa_supplicant *wpa_s = ctx; 780 offchannel_send_action_done(wpa_s); 781} 782 783 784static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 785 struct p2p_go_neg_results *params) 786{ 787 if (wpa_s->go_params == NULL) { 788 wpa_s->go_params = os_malloc(sizeof(*params)); 789 if (wpa_s->go_params == NULL) 790 return -1; 791 } 792 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 793 return 0; 794} 795 796 797static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 798 struct p2p_go_neg_results *res) 799{ 800 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, 801 MAC2STR(res->peer_interface_addr)); 802 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 803 res->ssid, res->ssid_len); 804 wpa_supplicant_ap_deinit(wpa_s); 805 wpas_copy_go_neg_results(wpa_s, res); 806 if (res->wps_method == WPS_PBC) 807 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 808 else { 809 u16 dev_pw_id = DEV_PW_DEFAULT; 810 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 811 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 812 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 813 wpa_s->p2p_pin, 1, dev_pw_id); 814 } 815} 816 817 818static void p2p_go_configured(void *ctx, void *data) 819{ 820 struct wpa_supplicant *wpa_s = ctx; 821 struct p2p_go_neg_results *params = data; 822 struct wpa_ssid *ssid; 823 int network_id = -1; 824 825 ssid = wpa_s->current_ssid; 826 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 827 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 828 if (wpa_s->global->p2p_group_formation == wpa_s) 829 wpa_s->global->p2p_group_formation = NULL; 830 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 831 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 832 "go_dev_addr=" MACSTR "%s", 833 wpa_s->ifname, 834 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 835 ssid->frequency, 836 params->passphrase ? params->passphrase : "", 837 MAC2STR(wpa_s->global->p2p_dev_addr), 838 params->persistent_group ? " [PERSISTENT]" : ""); 839 840 if (params->persistent_group) 841 network_id = wpas_p2p_store_persistent_group( 842 wpa_s->parent, ssid, 843 wpa_s->global->p2p_dev_addr); 844 if (network_id < 0) 845 network_id = ssid->id; 846 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 847 wpas_p2p_cross_connect_setup(wpa_s); 848 wpas_p2p_set_group_idle_timeout(wpa_s); 849 return; 850 } 851 852 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 853 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 854 params->peer_interface_addr)) { 855 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 856 "filtering"); 857 return; 858 } 859 if (params->wps_method == WPS_PBC) 860 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 861 params->peer_device_addr); 862 else if (wpa_s->p2p_pin[0]) 863 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 864 wpa_s->p2p_pin, NULL, 0); 865 os_free(wpa_s->go_params); 866 wpa_s->go_params = NULL; 867} 868 869 870static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 871 struct p2p_go_neg_results *params, 872 int group_formation) 873{ 874 struct wpa_ssid *ssid; 875 876 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 877 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 878 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 879 "results"); 880 return; 881 } 882 883 ssid = wpa_config_add_network(wpa_s->conf); 884 if (ssid == NULL) { 885 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 886 return; 887 } 888 889 wpa_s->show_group_started = 0; 890 891 wpa_config_set_network_defaults(ssid); 892 ssid->temporary = 1; 893 ssid->p2p_group = 1; 894 ssid->p2p_persistent_group = params->persistent_group; 895 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 896 WPAS_MODE_P2P_GO; 897 ssid->frequency = params->freq; 898 ssid->ht40 = params->ht40; 899 ssid->ssid = os_zalloc(params->ssid_len + 1); 900 if (ssid->ssid) { 901 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 902 ssid->ssid_len = params->ssid_len; 903 } 904 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 905 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 906 ssid->proto = WPA_PROTO_RSN; 907 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 908 ssid->passphrase = os_strdup(params->passphrase); 909 if (ssid->passphrase == NULL) { 910 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy passphrase for " 911 "GO"); 912 wpa_config_remove_network(wpa_s->conf, ssid->id); 913 return; 914 } 915 wpa_config_update_psk(ssid); 916 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 917 918 wpa_s->ap_configured_cb = p2p_go_configured; 919 wpa_s->ap_configured_cb_ctx = wpa_s; 920 wpa_s->ap_configured_cb_data = wpa_s->go_params; 921 wpa_s->connect_without_scan = ssid; 922 wpa_s->reassociate = 1; 923 wpa_s->disconnected = 0; 924 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 925 "start GO)"); 926 wpa_supplicant_req_scan(wpa_s, 0, 0); 927} 928 929 930static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 931 const struct wpa_supplicant *src) 932{ 933 struct wpa_config *d; 934 const struct wpa_config *s; 935 936 d = dst->conf; 937 s = src->conf; 938 939#define C(n) if (s->n) d->n = os_strdup(s->n) 940 C(device_name); 941 C(manufacturer); 942 C(model_name); 943 C(model_number); 944 C(serial_number); 945 C(config_methods); 946#undef C 947 948 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 949 os_memcpy(d->sec_device_type, s->sec_device_type, 950 sizeof(d->sec_device_type)); 951 d->num_sec_device_types = s->num_sec_device_types; 952 953 d->p2p_group_idle = s->p2p_group_idle; 954 d->p2p_intra_bss = s->p2p_intra_bss; 955 d->persistent_reconnect = s->persistent_reconnect; 956 d->max_num_sta = s->max_num_sta; 957 d->pbc_in_m1 = s->pbc_in_m1; 958} 959 960 961static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 962 enum wpa_driver_if_type type) 963{ 964 char ifname[120], force_ifname[120]; 965 966 if (wpa_s->pending_interface_name[0]) { 967 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 968 "- skip creation of a new one"); 969 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 970 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 971 "unknown?! ifname='%s'", 972 wpa_s->pending_interface_name); 973 return -1; 974 } 975 return 0; 976 } 977 978 os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, 979 wpa_s->p2p_group_idx); 980 if (os_strlen(ifname) >= IFNAMSIZ && 981 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 982 /* Try to avoid going over the IFNAMSIZ length limit */ 983 os_snprintf(ifname, sizeof(ifname), "p2p-%d", 984 wpa_s->p2p_group_idx); 985 } 986 force_ifname[0] = '\0'; 987 988 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 989 ifname); 990 wpa_s->p2p_group_idx++; 991 992 wpa_s->pending_interface_type = type; 993 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 994 wpa_s->pending_interface_addr, NULL) < 0) { 995 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 996 "interface"); 997 return -1; 998 } 999 1000 if (force_ifname[0]) { 1001 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 1002 force_ifname); 1003 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 1004 sizeof(wpa_s->pending_interface_name)); 1005 } else 1006 os_strlcpy(wpa_s->pending_interface_name, ifname, 1007 sizeof(wpa_s->pending_interface_name)); 1008 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 1009 MACSTR, wpa_s->pending_interface_name, 1010 MAC2STR(wpa_s->pending_interface_addr)); 1011 1012 return 0; 1013} 1014 1015 1016static void wpas_p2p_remove_pending_group_interface( 1017 struct wpa_supplicant *wpa_s) 1018{ 1019 if (!wpa_s->pending_interface_name[0] || 1020 is_zero_ether_addr(wpa_s->pending_interface_addr)) 1021 return; /* No pending virtual interface */ 1022 1023 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 1024 wpa_s->pending_interface_name); 1025 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 1026 wpa_s->pending_interface_name); 1027 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1028 wpa_s->pending_interface_name[0] = '\0'; 1029} 1030 1031 1032static struct wpa_supplicant * 1033wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 1034{ 1035 struct wpa_interface iface; 1036 struct wpa_supplicant *group_wpa_s; 1037 1038 if (!wpa_s->pending_interface_name[0]) { 1039 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 1040 if (!wpas_p2p_create_iface(wpa_s)) 1041 return NULL; 1042 /* 1043 * Something has forced us to remove the pending interface; try 1044 * to create a new one and hope for the best that we will get 1045 * the same local address. 1046 */ 1047 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 1048 WPA_IF_P2P_CLIENT) < 0) 1049 return NULL; 1050 } 1051 1052 os_memset(&iface, 0, sizeof(iface)); 1053 iface.ifname = wpa_s->pending_interface_name; 1054 iface.driver = wpa_s->driver->name; 1055 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 1056 iface.driver_param = wpa_s->conf->driver_param; 1057 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 1058 if (group_wpa_s == NULL) { 1059 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 1060 "wpa_supplicant interface"); 1061 return NULL; 1062 } 1063 wpa_s->pending_interface_name[0] = '\0'; 1064 group_wpa_s->parent = wpa_s; 1065 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 1066 P2P_GROUP_INTERFACE_CLIENT; 1067 wpa_s->global->p2p_group_formation = group_wpa_s; 1068 1069 wpas_p2p_clone_config(group_wpa_s, wpa_s); 1070 1071 return group_wpa_s; 1072} 1073 1074 1075static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 1076 void *timeout_ctx) 1077{ 1078 struct wpa_supplicant *wpa_s = eloop_ctx; 1079 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 1080 if (wpa_s->global->p2p) 1081 p2p_group_formation_failed(wpa_s->global->p2p); 1082 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1083 wpa_drv_p2p_group_formation_failed(wpa_s); 1084 wpas_group_formation_completed(wpa_s, 0); 1085} 1086 1087 1088void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 1089{ 1090 struct wpa_supplicant *wpa_s = ctx; 1091 1092 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1093 wpa_drv_cancel_remain_on_channel(wpa_s); 1094 wpa_s->off_channel_freq = 0; 1095 wpa_s->roc_waiting_drv_freq = 0; 1096 } 1097 1098 if (res->status) { 1099 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", 1100 res->status); 1101 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1102 wpas_p2p_remove_pending_group_interface(wpa_s); 1103 return; 1104 } 1105 1106 if (wpa_s->p2p_go_ht40) 1107 res->ht40 = 1; 1108 1109 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); 1110 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1111 1112 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 1113 struct wpa_ssid *ssid; 1114 ssid = wpa_config_get_network(wpa_s->conf, 1115 wpa_s->p2p_persistent_id); 1116 if (ssid && ssid->disabled == 2 && 1117 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 1118 size_t len = os_strlen(ssid->passphrase); 1119 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 1120 "on requested persistent group"); 1121 os_memcpy(res->passphrase, ssid->passphrase, len); 1122 res->passphrase[len] = '\0'; 1123 } 1124 } 1125 1126 if (wpa_s->create_p2p_iface) { 1127 struct wpa_supplicant *group_wpa_s = 1128 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1129 if (group_wpa_s == NULL) { 1130 wpas_p2p_remove_pending_group_interface(wpa_s); 1131 return; 1132 } 1133 if (group_wpa_s != wpa_s) { 1134 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1135 sizeof(group_wpa_s->p2p_pin)); 1136 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1137 } 1138 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1139 wpa_s->pending_interface_name[0] = '\0'; 1140 group_wpa_s->p2p_in_provisioning = 1; 1141 1142 if (res->role_go) 1143 wpas_start_wps_go(group_wpa_s, res, 1); 1144 else 1145 wpas_start_wps_enrollee(group_wpa_s, res); 1146 } else { 1147 wpa_s->p2p_in_provisioning = 1; 1148 wpa_s->global->p2p_group_formation = wpa_s; 1149 1150 if (res->role_go) 1151 wpas_start_wps_go(wpa_s, res, 1); 1152 else 1153 wpas_start_wps_enrollee(ctx, res); 1154 } 1155 1156 wpa_s->p2p_long_listen = 0; 1157 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1158 1159 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1160 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1161 (res->peer_config_timeout % 100) * 10000, 1162 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1163} 1164 1165 1166void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1167{ 1168 struct wpa_supplicant *wpa_s = ctx; 1169 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1170 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1171 1172 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1173} 1174 1175 1176void wpas_dev_found(void *ctx, const u8 *addr, 1177 const struct p2p_peer_info *info, 1178 int new_device) 1179{ 1180#ifndef CONFIG_NO_STDOUT_DEBUG 1181 struct wpa_supplicant *wpa_s = ctx; 1182 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1183#define WFD_DEV_INFO_SIZE 9 1184 char wfd_dev_info_hex[2 * WFD_DEV_INFO_SIZE + 1]; 1185 os_memset(wfd_dev_info_hex, 0, sizeof(wfd_dev_info_hex)); 1186#ifdef CONFIG_WIFI_DISPLAY 1187 if (info->wfd_subelems) { 1188 wpa_snprintf_hex(wfd_dev_info_hex, sizeof(wfd_dev_info_hex), 1189 wpabuf_head(info->wfd_subelems), 1190 WFD_DEV_INFO_SIZE); 1191 } 1192#endif /* CONFIG_WIFI_DISPLAY */ 1193 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1194 " p2p_dev_addr=" MACSTR 1195 " pri_dev_type=%s name='%s' config_methods=0x%x " 1196 "dev_capab=0x%x group_capab=0x%x%s%s", 1197 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1198 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1199 sizeof(devtype)), 1200 info->device_name, info->config_methods, 1201 info->dev_capab, info->group_capab, 1202 wfd_dev_info_hex[0] ? " wfd_dev_info=0x" : "", wfd_dev_info_hex); 1203#endif /* CONFIG_NO_STDOUT_DEBUG */ 1204 1205 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1206} 1207 1208 1209static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1210{ 1211 struct wpa_supplicant *wpa_s = ctx; 1212 1213 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1214 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1215 1216 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1217} 1218 1219 1220static int wpas_start_listen(void *ctx, unsigned int freq, 1221 unsigned int duration, 1222 const struct wpabuf *probe_resp_ie) 1223{ 1224 struct wpa_supplicant *wpa_s = ctx; 1225 1226 wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); 1227 1228 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1229 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1230 "report received Probe Request frames"); 1231 return -1; 1232 } 1233 1234 wpa_s->pending_listen_freq = freq; 1235 wpa_s->pending_listen_duration = duration; 1236 1237 if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { 1238 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1239 "to remain on channel (%u MHz) for Listen " 1240 "state", freq); 1241 wpa_s->pending_listen_freq = 0; 1242 return -1; 1243 } 1244 wpa_s->off_channel_freq = 0; 1245 wpa_s->roc_waiting_drv_freq = freq; 1246 1247 return 0; 1248} 1249 1250 1251static void wpas_stop_listen(void *ctx) 1252{ 1253 struct wpa_supplicant *wpa_s = ctx; 1254 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1255 wpa_drv_cancel_remain_on_channel(wpa_s); 1256 wpa_s->off_channel_freq = 0; 1257 wpa_s->roc_waiting_drv_freq = 0; 1258 } 1259 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1260 wpa_drv_probe_req_report(wpa_s, 0); 1261} 1262 1263 1264static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1265{ 1266 struct wpa_supplicant *wpa_s = ctx; 1267 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1268} 1269 1270 1271static struct p2p_srv_bonjour * 1272wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1273 const struct wpabuf *query) 1274{ 1275 struct p2p_srv_bonjour *bsrv; 1276 size_t len; 1277 1278 len = wpabuf_len(query); 1279 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1280 struct p2p_srv_bonjour, list) { 1281 if (len == wpabuf_len(bsrv->query) && 1282 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1283 len) == 0) 1284 return bsrv; 1285 } 1286 return NULL; 1287} 1288 1289 1290static struct p2p_srv_upnp * 1291wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 1292 const char *service) 1293{ 1294 struct p2p_srv_upnp *usrv; 1295 1296 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1297 struct p2p_srv_upnp, list) { 1298 if (version == usrv->version && 1299 os_strcmp(service, usrv->service) == 0) 1300 return usrv; 1301 } 1302 return NULL; 1303} 1304 1305 1306static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 1307 u8 srv_trans_id) 1308{ 1309 u8 *len_pos; 1310 1311 if (wpabuf_tailroom(resp) < 5) 1312 return; 1313 1314 /* Length (to be filled) */ 1315 len_pos = wpabuf_put(resp, 2); 1316 wpabuf_put_u8(resp, srv_proto); 1317 wpabuf_put_u8(resp, srv_trans_id); 1318 /* Status Code */ 1319 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 1320 /* Response Data: empty */ 1321 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1322} 1323 1324 1325static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 1326 struct wpabuf *resp, u8 srv_trans_id) 1327{ 1328 struct p2p_srv_bonjour *bsrv; 1329 u8 *len_pos; 1330 1331 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 1332 1333 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1334 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1335 return; 1336 } 1337 1338 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1339 struct p2p_srv_bonjour, list) { 1340 if (wpabuf_tailroom(resp) < 1341 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 1342 return; 1343 /* Length (to be filled) */ 1344 len_pos = wpabuf_put(resp, 2); 1345 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1346 wpabuf_put_u8(resp, srv_trans_id); 1347 /* Status Code */ 1348 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1349 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1350 wpabuf_head(bsrv->resp), 1351 wpabuf_len(bsrv->resp)); 1352 /* Response Data */ 1353 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1354 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1355 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1356 2); 1357 } 1358} 1359 1360 1361static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 1362 struct wpabuf *resp, u8 srv_trans_id, 1363 const u8 *query, size_t query_len) 1364{ 1365 struct p2p_srv_bonjour *bsrv; 1366 struct wpabuf buf; 1367 u8 *len_pos; 1368 1369 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 1370 query, query_len); 1371 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1372 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1373 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 1374 srv_trans_id); 1375 return; 1376 } 1377 1378 if (query_len == 0) { 1379 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1380 return; 1381 } 1382 1383 if (wpabuf_tailroom(resp) < 5) 1384 return; 1385 /* Length (to be filled) */ 1386 len_pos = wpabuf_put(resp, 2); 1387 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1388 wpabuf_put_u8(resp, srv_trans_id); 1389 1390 wpabuf_set(&buf, query, query_len); 1391 bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf); 1392 if (bsrv == NULL) { 1393 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 1394 "available"); 1395 1396 /* Status Code */ 1397 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1398 /* Response Data: empty */ 1399 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1400 2); 1401 return; 1402 } 1403 1404 /* Status Code */ 1405 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1406 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1407 wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp)); 1408 1409 if (wpabuf_tailroom(resp) >= 1410 wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) { 1411 /* Response Data */ 1412 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1413 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1414 } 1415 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1416} 1417 1418 1419static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 1420 struct wpabuf *resp, u8 srv_trans_id) 1421{ 1422 struct p2p_srv_upnp *usrv; 1423 u8 *len_pos; 1424 1425 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 1426 1427 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1428 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1429 return; 1430 } 1431 1432 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1433 struct p2p_srv_upnp, list) { 1434 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 1435 return; 1436 1437 /* Length (to be filled) */ 1438 len_pos = wpabuf_put(resp, 2); 1439 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1440 wpabuf_put_u8(resp, srv_trans_id); 1441 1442 /* Status Code */ 1443 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1444 /* Response Data */ 1445 wpabuf_put_u8(resp, usrv->version); 1446 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1447 usrv->service); 1448 wpabuf_put_str(resp, usrv->service); 1449 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1450 2); 1451 } 1452} 1453 1454 1455static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 1456 struct wpabuf *resp, u8 srv_trans_id, 1457 const u8 *query, size_t query_len) 1458{ 1459 struct p2p_srv_upnp *usrv; 1460 u8 *len_pos; 1461 u8 version; 1462 char *str; 1463 int count = 0; 1464 1465 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 1466 query, query_len); 1467 1468 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1469 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1470 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 1471 srv_trans_id); 1472 return; 1473 } 1474 1475 if (query_len == 0) { 1476 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1477 return; 1478 } 1479 1480 if (wpabuf_tailroom(resp) < 5) 1481 return; 1482 1483 /* Length (to be filled) */ 1484 len_pos = wpabuf_put(resp, 2); 1485 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1486 wpabuf_put_u8(resp, srv_trans_id); 1487 1488 version = query[0]; 1489 str = os_malloc(query_len); 1490 if (str == NULL) 1491 return; 1492 os_memcpy(str, query + 1, query_len - 1); 1493 str[query_len - 1] = '\0'; 1494 1495 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1496 struct p2p_srv_upnp, list) { 1497 if (version != usrv->version) 1498 continue; 1499 1500 if (os_strcmp(str, "ssdp:all") != 0 && 1501 os_strstr(usrv->service, str) == NULL) 1502 continue; 1503 1504 if (wpabuf_tailroom(resp) < 2) 1505 break; 1506 if (count == 0) { 1507 /* Status Code */ 1508 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1509 /* Response Data */ 1510 wpabuf_put_u8(resp, version); 1511 } else 1512 wpabuf_put_u8(resp, ','); 1513 1514 count++; 1515 1516 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1517 usrv->service); 1518 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 1519 break; 1520 wpabuf_put_str(resp, usrv->service); 1521 } 1522 os_free(str); 1523 1524 if (count == 0) { 1525 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 1526 "available"); 1527 /* Status Code */ 1528 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1529 /* Response Data: empty */ 1530 } 1531 1532 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1533} 1534 1535 1536#ifdef CONFIG_WIFI_DISPLAY 1537static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s, 1538 struct wpabuf *resp, u8 srv_trans_id, 1539 const u8 *query, size_t query_len) 1540{ 1541 const u8 *pos; 1542 u8 role; 1543 u8 *len_pos; 1544 1545 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len); 1546 1547 if (!wpa_s->global->wifi_display) { 1548 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available"); 1549 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY, 1550 srv_trans_id); 1551 return; 1552 } 1553 1554 if (query_len < 1) { 1555 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device " 1556 "Role"); 1557 return; 1558 } 1559 1560 if (wpabuf_tailroom(resp) < 5) 1561 return; 1562 1563 pos = query; 1564 role = *pos++; 1565 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role); 1566 1567 /* TODO: role specific handling */ 1568 1569 /* Length (to be filled) */ 1570 len_pos = wpabuf_put(resp, 2); 1571 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY); 1572 wpabuf_put_u8(resp, srv_trans_id); 1573 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */ 1574 1575 while (pos < query + query_len) { 1576 if (*pos < MAX_WFD_SUBELEMS && 1577 wpa_s->global->wfd_subelem[*pos] && 1578 wpabuf_tailroom(resp) >= 1579 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) { 1580 wpa_printf(MSG_DEBUG, "P2P: Add WSD response " 1581 "subelement %u", *pos); 1582 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]); 1583 } 1584 pos++; 1585 } 1586 1587 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1588} 1589#endif /* CONFIG_WIFI_DISPLAY */ 1590 1591 1592void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 1593 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 1594{ 1595 struct wpa_supplicant *wpa_s = ctx; 1596 const u8 *pos = tlvs; 1597 const u8 *end = tlvs + tlvs_len; 1598 const u8 *tlv_end; 1599 u16 slen; 1600 struct wpabuf *resp; 1601 u8 srv_proto, srv_trans_id; 1602 size_t buf_len; 1603 char *buf; 1604 1605 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 1606 tlvs, tlvs_len); 1607 buf_len = 2 * tlvs_len + 1; 1608 buf = os_malloc(buf_len); 1609 if (buf) { 1610 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1611 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 1612 MACSTR " %u %u %s", 1613 freq, MAC2STR(sa), dialog_token, update_indic, 1614 buf); 1615 os_free(buf); 1616 } 1617 1618 if (wpa_s->p2p_sd_over_ctrl_iface) { 1619 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1620 update_indic, tlvs, tlvs_len); 1621 return; /* to be processed by an external program */ 1622 } 1623 1624 resp = wpabuf_alloc(10000); 1625 if (resp == NULL) 1626 return; 1627 1628 while (pos + 1 < end) { 1629 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 1630 slen = WPA_GET_LE16(pos); 1631 pos += 2; 1632 if (pos + slen > end || slen < 2) { 1633 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 1634 "length"); 1635 wpabuf_free(resp); 1636 return; 1637 } 1638 tlv_end = pos + slen; 1639 1640 srv_proto = *pos++; 1641 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1642 srv_proto); 1643 srv_trans_id = *pos++; 1644 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1645 srv_trans_id); 1646 1647 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 1648 pos, tlv_end - pos); 1649 1650 1651 if (wpa_s->force_long_sd) { 1652 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 1653 "response"); 1654 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1655 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1656 goto done; 1657 } 1658 1659 switch (srv_proto) { 1660 case P2P_SERV_ALL_SERVICES: 1661 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 1662 "for all services"); 1663 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 1664 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1665 wpa_printf(MSG_DEBUG, "P2P: No service " 1666 "discovery protocols available"); 1667 wpas_sd_add_proto_not_avail( 1668 resp, P2P_SERV_ALL_SERVICES, 1669 srv_trans_id); 1670 break; 1671 } 1672 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1673 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1674 break; 1675 case P2P_SERV_BONJOUR: 1676 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 1677 pos, tlv_end - pos); 1678 break; 1679 case P2P_SERV_UPNP: 1680 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 1681 pos, tlv_end - pos); 1682 break; 1683#ifdef CONFIG_WIFI_DISPLAY 1684 case P2P_SERV_WIFI_DISPLAY: 1685 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id, 1686 pos, tlv_end - pos); 1687 break; 1688#endif /* CONFIG_WIFI_DISPLAY */ 1689 default: 1690 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 1691 "protocol %u", srv_proto); 1692 wpas_sd_add_proto_not_avail(resp, srv_proto, 1693 srv_trans_id); 1694 break; 1695 } 1696 1697 pos = tlv_end; 1698 } 1699 1700done: 1701 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1702 update_indic, tlvs, tlvs_len); 1703 1704 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 1705 1706 wpabuf_free(resp); 1707} 1708 1709 1710void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 1711 const u8 *tlvs, size_t tlvs_len) 1712{ 1713 struct wpa_supplicant *wpa_s = ctx; 1714 const u8 *pos = tlvs; 1715 const u8 *end = tlvs + tlvs_len; 1716 const u8 *tlv_end; 1717 u16 slen; 1718 size_t buf_len; 1719 char *buf; 1720 1721 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 1722 tlvs, tlvs_len); 1723 if (tlvs_len > 1500) { 1724 /* TODO: better way for handling this */ 1725 wpa_msg_ctrl(wpa_s, MSG_INFO, 1726 P2P_EVENT_SERV_DISC_RESP MACSTR 1727 " %u <long response: %u bytes>", 1728 MAC2STR(sa), update_indic, 1729 (unsigned int) tlvs_len); 1730 } else { 1731 buf_len = 2 * tlvs_len + 1; 1732 buf = os_malloc(buf_len); 1733 if (buf) { 1734 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1735 wpa_msg_ctrl(wpa_s, MSG_INFO, 1736 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 1737 MAC2STR(sa), update_indic, buf); 1738 os_free(buf); 1739 } 1740 } 1741 1742 while (pos < end) { 1743 u8 srv_proto, srv_trans_id, status; 1744 1745 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 1746 slen = WPA_GET_LE16(pos); 1747 pos += 2; 1748 if (pos + slen > end || slen < 3) { 1749 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 1750 "length"); 1751 return; 1752 } 1753 tlv_end = pos + slen; 1754 1755 srv_proto = *pos++; 1756 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1757 srv_proto); 1758 srv_trans_id = *pos++; 1759 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1760 srv_trans_id); 1761 status = *pos++; 1762 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 1763 status); 1764 1765 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 1766 pos, tlv_end - pos); 1767 1768 pos = tlv_end; 1769 } 1770 1771 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 1772} 1773 1774 1775u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 1776 const struct wpabuf *tlvs) 1777{ 1778 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1779 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); 1780 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1781 return 0; 1782 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 1783} 1784 1785 1786u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 1787 u8 version, const char *query) 1788{ 1789 struct wpabuf *tlvs; 1790 u64 ret; 1791 1792 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 1793 if (tlvs == NULL) 1794 return 0; 1795 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 1796 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 1797 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 1798 wpabuf_put_u8(tlvs, version); 1799 wpabuf_put_str(tlvs, query); 1800 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 1801 wpabuf_free(tlvs); 1802 return ret; 1803} 1804 1805 1806#ifdef CONFIG_WIFI_DISPLAY 1807 1808static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst, 1809 const struct wpabuf *tlvs) 1810{ 1811 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1812 return 0; 1813 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1814 return 0; 1815 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs); 1816} 1817 1818 1819#define MAX_WFD_SD_SUBELEMS 20 1820 1821static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role, 1822 const char *subelems) 1823{ 1824 u8 *len; 1825 const char *pos; 1826 int val; 1827 int count = 0; 1828 1829 len = wpabuf_put(tlvs, 2); 1830 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */ 1831 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */ 1832 1833 wpabuf_put_u8(tlvs, role); 1834 1835 pos = subelems; 1836 while (*pos) { 1837 val = atoi(pos); 1838 if (val >= 0 && val < 256) { 1839 wpabuf_put_u8(tlvs, val); 1840 count++; 1841 if (count == MAX_WFD_SD_SUBELEMS) 1842 break; 1843 } 1844 pos = os_strchr(pos + 1, ','); 1845 if (pos == NULL) 1846 break; 1847 pos++; 1848 } 1849 1850 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2); 1851} 1852 1853 1854u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s, 1855 const u8 *dst, const char *role) 1856{ 1857 struct wpabuf *tlvs; 1858 u64 ret; 1859 const char *subelems; 1860 u8 id = 1; 1861 1862 subelems = os_strchr(role, ' '); 1863 if (subelems == NULL) 1864 return 0; 1865 subelems++; 1866 1867 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS)); 1868 if (tlvs == NULL) 1869 return 0; 1870 1871 if (os_strstr(role, "[source]")) 1872 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems); 1873 if (os_strstr(role, "[pri-sink]")) 1874 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems); 1875 if (os_strstr(role, "[sec-sink]")) 1876 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems); 1877 if (os_strstr(role, "[source+sink]")) 1878 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems); 1879 1880 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs); 1881 wpabuf_free(tlvs); 1882 return ret; 1883} 1884 1885#endif /* CONFIG_WIFI_DISPLAY */ 1886 1887 1888int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 1889{ 1890 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1891 return wpa_drv_p2p_sd_cancel_request(wpa_s, req); 1892 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1893 return -1; 1894 return p2p_sd_cancel_request(wpa_s->global->p2p, 1895 (void *) (uintptr_t) req); 1896} 1897 1898 1899void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 1900 const u8 *dst, u8 dialog_token, 1901 const struct wpabuf *resp_tlvs) 1902{ 1903 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1904 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, 1905 resp_tlvs); 1906 return; 1907 } 1908 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1909 return; 1910 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 1911 resp_tlvs); 1912} 1913 1914#ifdef ANDROID_P2P 1915void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action) 1916#else 1917void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 1918#endif 1919{ 1920 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1921 wpa_drv_p2p_service_update(wpa_s); 1922 return; 1923 } 1924 if (wpa_s->global->p2p) 1925#ifdef ANDROID_P2P 1926 p2p_sd_service_update(wpa_s->global->p2p, action); 1927#else 1928 p2p_sd_service_update(wpa_s->global->p2p); 1929#endif 1930} 1931 1932 1933static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 1934{ 1935 dl_list_del(&bsrv->list); 1936 wpabuf_free(bsrv->query); 1937 wpabuf_free(bsrv->resp); 1938 os_free(bsrv); 1939} 1940 1941 1942static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 1943{ 1944 dl_list_del(&usrv->list); 1945 os_free(usrv->service); 1946 os_free(usrv); 1947} 1948 1949 1950void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 1951{ 1952 struct p2p_srv_bonjour *bsrv, *bn; 1953 struct p2p_srv_upnp *usrv, *un; 1954 1955 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 1956 struct p2p_srv_bonjour, list) 1957 wpas_p2p_srv_bonjour_free(bsrv); 1958 1959 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 1960 struct p2p_srv_upnp, list) 1961 wpas_p2p_srv_upnp_free(usrv); 1962 1963#ifdef ANDROID_P2P 1964 wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH); 1965#else 1966 wpas_p2p_sd_service_update(wpa_s); 1967#endif 1968} 1969 1970 1971int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 1972 struct wpabuf *query, struct wpabuf *resp) 1973{ 1974 struct p2p_srv_bonjour *bsrv; 1975 1976 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 1977 if (bsrv) { 1978 wpabuf_free(query); 1979 wpabuf_free(bsrv->resp); 1980 bsrv->resp = resp; 1981 return 0; 1982 } 1983 1984 bsrv = os_zalloc(sizeof(*bsrv)); 1985 if (bsrv == NULL) 1986 return -1; 1987 bsrv->query = query; 1988 bsrv->resp = resp; 1989 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 1990 1991#ifdef ANDROID_P2P 1992 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 1993#else 1994 wpas_p2p_sd_service_update(wpa_s); 1995#endif 1996 return 0; 1997} 1998 1999 2000int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 2001 const struct wpabuf *query) 2002{ 2003 struct p2p_srv_bonjour *bsrv; 2004 2005 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 2006 if (bsrv == NULL) 2007 return -1; 2008 wpas_p2p_srv_bonjour_free(bsrv); 2009#ifdef ANDROID_P2P 2010 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 2011#else 2012 wpas_p2p_sd_service_update(wpa_s); 2013#endif 2014 return 0; 2015} 2016 2017 2018int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 2019 const char *service) 2020{ 2021 struct p2p_srv_upnp *usrv; 2022 2023 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 2024 return 0; /* Already listed */ 2025 usrv = os_zalloc(sizeof(*usrv)); 2026 if (usrv == NULL) 2027 return -1; 2028 usrv->version = version; 2029 usrv->service = os_strdup(service); 2030 if (usrv->service == NULL) { 2031 os_free(usrv); 2032 return -1; 2033 } 2034 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 2035 2036#ifdef ANDROID_P2P 2037 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 2038#else 2039 wpas_p2p_sd_service_update(wpa_s); 2040#endif 2041 return 0; 2042} 2043 2044 2045int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 2046 const char *service) 2047{ 2048 struct p2p_srv_upnp *usrv; 2049 2050 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 2051 if (usrv == NULL) 2052 return -1; 2053 wpas_p2p_srv_upnp_free(usrv); 2054#ifdef ANDROID_P2P 2055 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 2056#else 2057 wpas_p2p_sd_service_update(wpa_s); 2058#endif 2059 return 0; 2060} 2061 2062 2063static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2064 const u8 *peer, const char *params, 2065 unsigned int generated_pin) 2066{ 2067 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", 2068 MAC2STR(peer), generated_pin, params); 2069} 2070 2071 2072static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2073 const u8 *peer, const char *params) 2074{ 2075 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", 2076 MAC2STR(peer), params); 2077} 2078 2079 2080void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2081 const u8 *dev_addr, const u8 *pri_dev_type, 2082 const char *dev_name, u16 supp_config_methods, 2083 u8 dev_capab, u8 group_capab, const u8 *group_id, 2084 size_t group_id_len) 2085{ 2086 struct wpa_supplicant *wpa_s = ctx; 2087 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2088 char params[300]; 2089 u8 empty_dev_type[8]; 2090 unsigned int generated_pin = 0; 2091 struct wpa_supplicant *group = NULL; 2092 2093 if (group_id) { 2094 for (group = wpa_s->global->ifaces; group; group = group->next) 2095 { 2096 struct wpa_ssid *s = group->current_ssid; 2097 if (s != NULL && 2098 s->mode == WPAS_MODE_P2P_GO && 2099 group_id_len - ETH_ALEN == s->ssid_len && 2100 os_memcmp(group_id + ETH_ALEN, s->ssid, 2101 s->ssid_len) == 0) 2102 break; 2103 } 2104 } 2105 2106 if (pri_dev_type == NULL) { 2107 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2108 pri_dev_type = empty_dev_type; 2109 } 2110 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2111 " pri_dev_type=%s name='%s' config_methods=0x%x " 2112 "dev_capab=0x%x group_capab=0x%x%s%s", 2113 MAC2STR(dev_addr), 2114 wps_dev_type_bin2str(pri_dev_type, devtype, 2115 sizeof(devtype)), 2116 dev_name, supp_config_methods, dev_capab, group_capab, 2117 group ? " group=" : "", 2118 group ? group->ifname : ""); 2119 params[sizeof(params) - 1] = '\0'; 2120 2121 if (config_methods & WPS_CONFIG_DISPLAY) { 2122 generated_pin = wps_generate_pin(); 2123 wpas_prov_disc_local_display(wpa_s, peer, params, 2124 generated_pin); 2125 } else if (config_methods & WPS_CONFIG_KEYPAD) 2126 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2127 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2128 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR 2129 "%s", MAC2STR(peer), params); 2130 2131 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2132 P2P_PROV_DISC_SUCCESS, 2133 config_methods, generated_pin); 2134} 2135 2136 2137void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2138{ 2139 struct wpa_supplicant *wpa_s = ctx; 2140 unsigned int generated_pin = 0; 2141 char params[20]; 2142 2143 if (wpa_s->pending_pd_before_join && 2144 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2145 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2146 wpa_s->pending_pd_before_join = 0; 2147 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2148 "join-existing-group operation"); 2149 wpas_p2p_join_start(wpa_s); 2150 return; 2151 } 2152 2153 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2154 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) 2155 os_snprintf(params, sizeof(params), " peer_go=%d", 2156 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2157 else 2158 params[0] = '\0'; 2159 2160 if (config_methods & WPS_CONFIG_DISPLAY) 2161 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2162 else if (config_methods & WPS_CONFIG_KEYPAD) { 2163 generated_pin = wps_generate_pin(); 2164 wpas_prov_disc_local_display(wpa_s, peer, params, 2165 generated_pin); 2166 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2167 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR 2168 "%s", MAC2STR(peer), params); 2169 2170 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2171 P2P_PROV_DISC_SUCCESS, 2172 config_methods, generated_pin); 2173} 2174 2175 2176static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2177 enum p2p_prov_disc_status status) 2178{ 2179 struct wpa_supplicant *wpa_s = ctx; 2180 2181 if (wpa_s->p2p_fallback_to_go_neg) { 2182 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2183 "failed - fall back to GO Negotiation"); 2184 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2185 return; 2186 } 2187 2188#ifdef ANDROID_P2P 2189 /* If provision discovery failed it is safe to cancel the timer here and 2190 * also do not start the join */ 2191 if (wpa_s->pending_pd_before_join && 2192 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2193 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2194 wpa_s->pending_pd_before_join = 0; 2195 wpa_printf(MSG_DEBUG, "P2P: Do not Start pending " 2196 "join-existing-group operation"); 2197 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 2198 } 2199#endif /* ANDROID_P2P */ 2200 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2201 " p2p_dev_addr=" MACSTR " status=%d", 2202 MAC2STR(peer), status); 2203 2204 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2205 status, 0, 0); 2206} 2207 2208 2209static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2210 const u8 *go_dev_addr, const u8 *ssid, 2211 size_t ssid_len, int *go, u8 *group_bssid, 2212 int *force_freq, int persistent_group) 2213{ 2214 struct wpa_supplicant *wpa_s = ctx; 2215 struct wpa_ssid *s; 2216 u8 cur_bssid[ETH_ALEN]; 2217 int res; 2218 struct wpa_supplicant *grp; 2219 2220 if (!persistent_group) { 2221 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2222 " to join an active group", MAC2STR(sa)); 2223 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2224 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2225 == 0 || 2226 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2227 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2228 "authorized invitation"); 2229 goto accept_inv; 2230 } 2231 /* 2232 * Do not accept the invitation automatically; notify user and 2233 * request approval. 2234 */ 2235 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2236 } 2237 2238 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2239 if (grp) { 2240 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2241 "running persistent group"); 2242 if (*go) 2243 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2244 goto accept_inv; 2245 } 2246 2247 if (!wpa_s->conf->persistent_reconnect) 2248 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2249 2250 for (s = wpa_s->conf->ssid; s; s = s->next) { 2251 if (s->disabled == 2 && 2252 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2253 s->ssid_len == ssid_len && 2254 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2255 break; 2256 } 2257 2258 if (!s) { 2259 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2260 " requested reinvocation of an unknown group", 2261 MAC2STR(sa)); 2262 return P2P_SC_FAIL_UNKNOWN_GROUP; 2263 } 2264 2265 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2266 *go = 1; 2267 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2268 wpa_printf(MSG_DEBUG, "P2P: The only available " 2269 "interface is already in use - reject " 2270 "invitation"); 2271 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2272 } 2273 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2274 } else if (s->mode == WPAS_MODE_P2P_GO) { 2275 *go = 1; 2276 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2277 { 2278 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2279 "interface address for the group"); 2280 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2281 } 2282 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2283 ETH_ALEN); 2284 } 2285 2286accept_inv: 2287 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && 2288 wpa_s->assoc_freq) { 2289 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2290 "the channel we are already using"); 2291 *force_freq = wpa_s->assoc_freq; 2292 } 2293 2294 res = wpa_drv_shared_freq(wpa_s); 2295 if (res > 0) { 2296 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2297 "with the channel we are already using on a " 2298 "shared interface"); 2299 *force_freq = res; 2300 } 2301 2302 return P2P_SC_SUCCESS; 2303} 2304 2305 2306static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2307 const u8 *ssid, size_t ssid_len, 2308 const u8 *go_dev_addr, u8 status, 2309 int op_freq) 2310{ 2311 struct wpa_supplicant *wpa_s = ctx; 2312 struct wpa_ssid *s; 2313 2314 for (s = wpa_s->conf->ssid; s; s = s->next) { 2315 if (s->disabled == 2 && 2316 s->ssid_len == ssid_len && 2317 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2318 break; 2319 } 2320 2321 if (status == P2P_SC_SUCCESS) { 2322 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2323 " was accepted; op_freq=%d MHz", 2324 MAC2STR(sa), op_freq); 2325 if (s) { 2326 int go = s->mode == WPAS_MODE_P2P_GO; 2327 wpas_p2p_group_add_persistent( 2328 wpa_s, s, go, go ? op_freq : 0, 0); 2329 } else if (bssid) { 2330 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2331 wpa_s->p2p_wps_method, 0); 2332 } 2333 return; 2334 } 2335 2336 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2337 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2338 " was rejected (status %u)", MAC2STR(sa), status); 2339 return; 2340 } 2341 2342 if (!s) { 2343 if (bssid) { 2344 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2345 "sa=" MACSTR " go_dev_addr=" MACSTR 2346 " bssid=" MACSTR " unknown-network", 2347 MAC2STR(sa), MAC2STR(go_dev_addr), 2348 MAC2STR(bssid)); 2349 } else { 2350 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2351 "sa=" MACSTR " go_dev_addr=" MACSTR 2352 " unknown-network", 2353 MAC2STR(sa), MAC2STR(go_dev_addr)); 2354 } 2355 return; 2356 } 2357 2358 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR 2359 " persistent=%d", MAC2STR(sa), s->id); 2360} 2361 2362 2363static void wpas_invitation_result(void *ctx, int status, const u8 *bssid) 2364{ 2365 struct wpa_supplicant *wpa_s = ctx; 2366 struct wpa_ssid *ssid; 2367 2368 if (bssid) { 2369 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2370 "status=%d " MACSTR, 2371 status, MAC2STR(bssid)); 2372 } else { 2373 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2374 "status=%d ", status); 2375 } 2376 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 2377 2378 if (wpa_s->pending_invite_ssid_id == -1) 2379 return; /* Invitation to active group */ 2380 2381 if (status != P2P_SC_SUCCESS) { 2382 wpas_p2p_remove_pending_group_interface(wpa_s); 2383 return; 2384 } 2385 2386 ssid = wpa_config_get_network(wpa_s->conf, 2387 wpa_s->pending_invite_ssid_id); 2388 if (ssid == NULL) { 2389 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 2390 "data matching with invitation"); 2391 return; 2392 } 2393 2394 wpas_p2p_group_add_persistent(wpa_s, ssid, 2395 ssid->mode == WPAS_MODE_P2P_GO, 2396 wpa_s->p2p_persistent_go_freq, 2397 wpa_s->p2p_go_ht40); 2398} 2399 2400 2401static int wpas_p2p_disallowed_freq(struct wpa_global *global, 2402 unsigned int freq) 2403{ 2404 unsigned int i; 2405 2406 if (global->p2p_disallow_freq == NULL) 2407 return 0; 2408 2409 for (i = 0; i < global->num_p2p_disallow_freq; i++) { 2410 if (freq >= global->p2p_disallow_freq[i].min && 2411 freq <= global->p2p_disallow_freq[i].max) 2412 return 1; 2413 } 2414 2415 return 0; 2416} 2417 2418 2419static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 2420{ 2421 reg->channel[reg->channels] = chan; 2422 reg->channels++; 2423} 2424 2425 2426static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 2427 struct p2p_channels *chan) 2428{ 2429 int i, cla = 0; 2430 2431 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 2432 "band"); 2433 2434 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 2435 chan->reg_class[cla].reg_class = 81; 2436 chan->reg_class[cla].channels = 0; 2437 for (i = 0; i < 11; i++) { 2438 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 2439 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 2440 } 2441 if (chan->reg_class[cla].channels) 2442 cla++; 2443 2444 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 2445 "band"); 2446 2447 /* Operating class 115 - 5 GHz, channels 36-48 */ 2448 chan->reg_class[cla].reg_class = 115; 2449 chan->reg_class[cla].channels = 0; 2450 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 2451 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 2452 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 2453 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 2454 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 2455 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 2456 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 2457 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 2458 if (chan->reg_class[cla].channels) 2459 cla++; 2460 2461 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 2462 "band"); 2463 2464 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 2465 chan->reg_class[cla].reg_class = 124; 2466 chan->reg_class[cla].channels = 0; 2467 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 2468 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 2469 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 2470 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 2471 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 2472 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 2473 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 2474 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 2475 if (chan->reg_class[cla].channels) 2476 cla++; 2477 2478 chan->reg_classes = cla; 2479 return 0; 2480} 2481 2482 2483static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 2484 u16 num_modes, 2485 enum hostapd_hw_mode mode) 2486{ 2487 u16 i; 2488 2489 for (i = 0; i < num_modes; i++) { 2490 if (modes[i].mode == mode) 2491 return &modes[i]; 2492 } 2493 2494 return NULL; 2495} 2496 2497 2498static int has_channel(struct wpa_global *global, 2499 struct hostapd_hw_modes *mode, u8 chan, int *flags) 2500{ 2501 int i; 2502 unsigned int freq; 2503 2504 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 2505 chan * 5; 2506 if (wpas_p2p_disallowed_freq(global, freq)) 2507 return 0; 2508 2509 for (i = 0; i < mode->num_channels; i++) { 2510 if (mode->channels[i].chan == chan) { 2511 if (flags) 2512 *flags = mode->channels[i].flag; 2513 return !(mode->channels[i].flag & 2514 (HOSTAPD_CHAN_DISABLED | 2515 HOSTAPD_CHAN_PASSIVE_SCAN | 2516 HOSTAPD_CHAN_NO_IBSS | 2517 HOSTAPD_CHAN_RADAR)); 2518 } 2519 } 2520 2521 return 0; 2522} 2523 2524 2525struct p2p_oper_class_map { 2526 enum hostapd_hw_mode mode; 2527 u8 op_class; 2528 u8 min_chan; 2529 u8 max_chan; 2530 u8 inc; 2531 enum { BW20, BW40PLUS, BW40MINUS } bw; 2532}; 2533 2534static struct p2p_oper_class_map op_class[] = { 2535 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 2536#if 0 /* Do not enable HT40 on 2 GHz for now */ 2537 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 2538 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 2539#endif 2540 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 2541 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 2542 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 2543 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 2544 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 2545 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 2546 { -1, 0, 0, 0, 0, BW20 } 2547}; 2548 2549 2550static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 2551 struct hostapd_hw_modes *mode, 2552 u8 channel, u8 bw) 2553{ 2554 int flag; 2555 2556 if (!has_channel(wpa_s->global, mode, channel, &flag)) 2557 return -1; 2558 if (bw == BW40MINUS && 2559 (!(flag & HOSTAPD_CHAN_HT40MINUS) || 2560 !has_channel(wpa_s->global, mode, channel - 4, NULL))) 2561 return 0; 2562 if (bw == BW40PLUS && 2563 (!(flag & HOSTAPD_CHAN_HT40PLUS) || 2564 !has_channel(wpa_s->global, mode, channel + 4, NULL))) 2565 return 0; 2566 return 1; 2567} 2568 2569 2570static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 2571 struct p2p_channels *chan) 2572{ 2573 struct hostapd_hw_modes *mode; 2574 int cla, op; 2575 2576 if (wpa_s->hw.modes == NULL) { 2577 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 2578 "of all supported channels; assume dualband " 2579 "support"); 2580 return wpas_p2p_default_channels(wpa_s, chan); 2581 } 2582 2583 cla = 0; 2584 2585 for (op = 0; op_class[op].op_class; op++) { 2586 struct p2p_oper_class_map *o = &op_class[op]; 2587 u8 ch; 2588 struct p2p_reg_class *reg = NULL; 2589 2590 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 2591 if (mode == NULL) 2592 continue; 2593 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2594 if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1) 2595 continue; 2596 if (reg == NULL) { 2597 wpa_printf(MSG_DEBUG, "P2P: Add operating " 2598 "class %u", o->op_class); 2599 reg = &chan->reg_class[cla]; 2600 cla++; 2601 reg->reg_class = o->op_class; 2602 } 2603 reg->channel[reg->channels] = ch; 2604 reg->channels++; 2605 } 2606 if (reg) { 2607 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 2608 reg->channel, reg->channels); 2609 } 2610 } 2611 2612 chan->reg_classes = cla; 2613 2614 return 0; 2615} 2616 2617 2618int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 2619 struct hostapd_hw_modes *mode, u8 channel) 2620{ 2621 int op, ret; 2622 2623 for (op = 0; op_class[op].op_class; op++) { 2624 struct p2p_oper_class_map *o = &op_class[op]; 2625 u8 ch; 2626 2627 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2628 if (o->mode != HOSTAPD_MODE_IEEE80211A || 2629 o->bw == BW20 || ch != channel) 2630 continue; 2631 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 2632 if (ret < 0) 2633 continue; 2634 else if (ret > 0) 2635 return (o->bw == BW40MINUS) ? -1 : 1; 2636 else 2637 return 0; 2638 } 2639 } 2640 return 0; 2641} 2642 2643 2644static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 2645 size_t buf_len) 2646{ 2647 struct wpa_supplicant *wpa_s = ctx; 2648 2649 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2650 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 2651 break; 2652 } 2653 if (wpa_s == NULL) 2654 return -1; 2655 2656 return wpa_drv_get_noa(wpa_s, buf, buf_len); 2657} 2658 2659 2660static int wpas_go_connected(void *ctx, const u8 *dev_addr) 2661{ 2662 struct wpa_supplicant *wpa_s = ctx; 2663 2664 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2665 struct wpa_ssid *ssid = wpa_s->current_ssid; 2666 if (ssid == NULL) 2667 continue; 2668 if (ssid->mode != WPAS_MODE_INFRA) 2669 continue; 2670 if (wpa_s->wpa_state != WPA_COMPLETED && 2671 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 2672 continue; 2673 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 2674 return 1; 2675 } 2676 2677 return 0; 2678} 2679 2680 2681/** 2682 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 2683 * @global: Pointer to global data from wpa_supplicant_init() 2684 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2685 * Returns: 0 on success, -1 on failure 2686 */ 2687int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 2688{ 2689 struct p2p_config p2p; 2690 unsigned int r; 2691 int i; 2692 2693 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 2694 return 0; 2695 2696 if (global->p2p) 2697 return 0; 2698 2699 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2700 struct p2p_params params; 2701 2702 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); 2703 os_memset(¶ms, 0, sizeof(params)); 2704 params.dev_name = wpa_s->conf->device_name; 2705 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, 2706 WPS_DEV_TYPE_LEN); 2707 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2708 os_memcpy(params.sec_dev_type, 2709 wpa_s->conf->sec_device_type, 2710 params.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2711 2712 if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) 2713 return -1; 2714 2715 return 0; 2716 } 2717 2718 os_memset(&p2p, 0, sizeof(p2p)); 2719 p2p.msg_ctx = wpa_s; 2720 p2p.cb_ctx = wpa_s; 2721 p2p.p2p_scan = wpas_p2p_scan; 2722 p2p.send_action = wpas_send_action; 2723 p2p.send_action_done = wpas_send_action_done; 2724 p2p.go_neg_completed = wpas_go_neg_completed; 2725 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 2726 p2p.dev_found = wpas_dev_found; 2727 p2p.dev_lost = wpas_dev_lost; 2728 p2p.start_listen = wpas_start_listen; 2729 p2p.stop_listen = wpas_stop_listen; 2730 p2p.send_probe_resp = wpas_send_probe_resp; 2731 p2p.sd_request = wpas_sd_request; 2732 p2p.sd_response = wpas_sd_response; 2733 p2p.prov_disc_req = wpas_prov_disc_req; 2734 p2p.prov_disc_resp = wpas_prov_disc_resp; 2735 p2p.prov_disc_fail = wpas_prov_disc_fail; 2736 p2p.invitation_process = wpas_invitation_process; 2737 p2p.invitation_received = wpas_invitation_received; 2738 p2p.invitation_result = wpas_invitation_result; 2739 p2p.get_noa = wpas_get_noa; 2740 p2p.go_connected = wpas_go_connected; 2741 2742 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 2743 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 2744 p2p.dev_name = wpa_s->conf->device_name; 2745 p2p.manufacturer = wpa_s->conf->manufacturer; 2746 p2p.model_name = wpa_s->conf->model_name; 2747 p2p.model_number = wpa_s->conf->model_number; 2748 p2p.serial_number = wpa_s->conf->serial_number; 2749 if (wpa_s->wps) { 2750 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 2751 p2p.config_methods = wpa_s->wps->config_methods; 2752 } 2753 2754 if (wpa_s->conf->p2p_listen_reg_class && 2755 wpa_s->conf->p2p_listen_channel) { 2756 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 2757 p2p.channel = wpa_s->conf->p2p_listen_channel; 2758 } else { 2759 p2p.reg_class = 81; 2760 /* 2761 * Pick one of the social channels randomly as the listen 2762 * channel. 2763 */ 2764 os_get_random((u8 *) &r, sizeof(r)); 2765 p2p.channel = 1 + (r % 3) * 5; 2766 } 2767 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 2768 2769 if (wpa_s->conf->p2p_oper_reg_class && 2770 wpa_s->conf->p2p_oper_channel) { 2771 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 2772 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 2773 p2p.cfg_op_channel = 1; 2774 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 2775 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2776 2777 } else { 2778 p2p.op_reg_class = 81; 2779 /* 2780 * Use random operation channel from (1, 6, 11) if no other 2781 * preference is indicated. 2782 */ 2783 os_get_random((u8 *) &r, sizeof(r)); 2784 p2p.op_channel = 1 + (r % 3) * 5; 2785 p2p.cfg_op_channel = 0; 2786 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 2787 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2788 } 2789 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 2790 os_memcpy(p2p.country, wpa_s->conf->country, 2); 2791 p2p.country[2] = 0x04; 2792 } else 2793 os_memcpy(p2p.country, "XX\x04", 3); 2794 2795 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { 2796 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 2797 "channel list"); 2798 return -1; 2799 } 2800 2801 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 2802 WPS_DEV_TYPE_LEN); 2803 2804 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2805 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 2806 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2807 2808 p2p.concurrent_operations = !!(wpa_s->drv_flags & 2809 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 2810 2811 p2p.max_peers = 100; 2812 2813 if (wpa_s->conf->p2p_ssid_postfix) { 2814 p2p.ssid_postfix_len = 2815 os_strlen(wpa_s->conf->p2p_ssid_postfix); 2816 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 2817 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 2818 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 2819 p2p.ssid_postfix_len); 2820 } 2821 2822 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 2823 2824#ifdef ANDROID_P2P 2825 if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) { 2826 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT; 2827 wpa_printf(MSG_DEBUG, "P2P: Multi channel concurrency support"); 2828 } else { 2829 // Add support for WPA_DRIVER_FLAGS_P2P_CONCURRENT 2830 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT; 2831 wpa_printf(MSG_DEBUG, "P2P: Single channel concurrency support"); 2832 } 2833#endif 2834 2835 global->p2p = p2p_init(&p2p); 2836 if (global->p2p == NULL) 2837 return -1; 2838 global->p2p_init_wpa_s = wpa_s; 2839 2840 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 2841 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 2842 continue; 2843 p2p_add_wps_vendor_extension( 2844 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 2845 } 2846 2847 return 0; 2848} 2849 2850 2851/** 2852 * wpas_p2p_deinit - Deinitialize per-interface P2P data 2853 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2854 * 2855 * This function deinitialize per-interface P2P data. 2856 */ 2857void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 2858{ 2859 if (wpa_s->driver && wpa_s->drv_priv) 2860 wpa_drv_probe_req_report(wpa_s, 0); 2861 2862 if (wpa_s->go_params) { 2863 /* Clear any stored provisioning info */ 2864 p2p_clear_provisioning_info( 2865 wpa_s->global->p2p, 2866 wpa_s->go_params->peer_device_addr); 2867 } 2868 2869 os_free(wpa_s->go_params); 2870 wpa_s->go_params = NULL; 2871 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2872 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2873 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 2874 wpa_s->p2p_long_listen = 0; 2875 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2876 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 2877 wpas_p2p_remove_pending_group_interface(wpa_s); 2878 2879 /* TODO: remove group interface from the driver if this wpa_s instance 2880 * is on top of a P2P group interface */ 2881} 2882 2883 2884/** 2885 * wpas_p2p_deinit_global - Deinitialize global P2P module 2886 * @global: Pointer to global data from wpa_supplicant_init() 2887 * 2888 * This function deinitializes the global (per device) P2P module. 2889 */ 2890void wpas_p2p_deinit_global(struct wpa_global *global) 2891{ 2892 struct wpa_supplicant *wpa_s, *tmp; 2893 2894 wpa_s = global->ifaces; 2895 if (wpa_s) 2896 wpas_p2p_service_flush(wpa_s); 2897 2898 if (global->p2p == NULL) 2899 return; 2900 2901 /* Remove remaining P2P group interfaces */ 2902 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 2903 wpa_s = wpa_s->next; 2904 while (wpa_s) { 2905 tmp = global->ifaces; 2906 while (tmp && 2907 (tmp == wpa_s || 2908 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 2909 tmp = tmp->next; 2910 } 2911 if (tmp == NULL) 2912 break; 2913 /* Disconnect from the P2P group and deinit the interface */ 2914 wpas_p2p_disconnect(tmp); 2915 } 2916 2917 /* 2918 * Deinit GO data on any possibly remaining interface (if main 2919 * interface is used as GO). 2920 */ 2921 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2922 if (wpa_s->ap_iface) 2923 wpas_p2p_group_deinit(wpa_s); 2924 } 2925 2926 p2p_deinit(global->p2p); 2927 global->p2p = NULL; 2928 global->p2p_init_wpa_s = NULL; 2929} 2930 2931 2932static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 2933{ 2934 if (wpa_s->drv_flags & 2935 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 2936 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 2937 return 1; /* P2P group requires a new interface in every case 2938 */ 2939 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 2940 return 0; /* driver does not support concurrent operations */ 2941 if (wpa_s->global->ifaces->next) 2942 return 1; /* more that one interface already in use */ 2943 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2944 return 1; /* this interface is already in use */ 2945 return 0; 2946} 2947 2948 2949static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 2950 const u8 *peer_addr, 2951 enum p2p_wps_method wps_method, 2952 int go_intent, const u8 *own_interface_addr, 2953 unsigned int force_freq, int persistent_group, 2954 struct wpa_ssid *ssid) 2955{ 2956 if (persistent_group && wpa_s->conf->persistent_reconnect) 2957 persistent_group = 2; 2958 2959 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2960 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, 2961 go_intent, own_interface_addr, 2962 force_freq, persistent_group); 2963 } 2964 2965 /* 2966 * Increase GO config timeout if HT40 is used since it takes some time 2967 * to scan channels for coex purposes before the BSS can be started. 2968 */ 2969 p2p_set_config_timeout(wpa_s->global->p2p, 2970 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 2971 2972 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 2973 go_intent, own_interface_addr, force_freq, 2974 persistent_group, ssid ? ssid->ssid : NULL, 2975 ssid ? ssid->ssid_len : 0, 2976 wpa_s->p2p_pd_before_go_neg); 2977} 2978 2979 2980static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 2981 const u8 *peer_addr, 2982 enum p2p_wps_method wps_method, 2983 int go_intent, const u8 *own_interface_addr, 2984 unsigned int force_freq, int persistent_group, 2985 struct wpa_ssid *ssid) 2986{ 2987 if (persistent_group && wpa_s->conf->persistent_reconnect) 2988 persistent_group = 2; 2989 2990 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2991 return -1; 2992 2993 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 2994 go_intent, own_interface_addr, force_freq, 2995 persistent_group, ssid ? ssid->ssid : NULL, 2996 ssid ? ssid->ssid_len : 0); 2997} 2998 2999 3000static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 3001{ 3002 wpa_s->p2p_join_scan_count++; 3003 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 3004 wpa_s->p2p_join_scan_count); 3005 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 3006 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 3007 " for join operationg - stop join attempt", 3008 MAC2STR(wpa_s->pending_join_iface_addr)); 3009 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3010 if (wpa_s->p2p_auto_pd) { 3011 wpa_s->p2p_auto_pd = 0; 3012 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3013 " p2p_dev_addr=" MACSTR " status=N/A", 3014 MAC2STR(wpa_s->pending_join_dev_addr)); 3015 return; 3016 } 3017 wpa_msg(wpa_s->parent, MSG_INFO, 3018 P2P_EVENT_GROUP_FORMATION_FAILURE); 3019 } 3020} 3021 3022 3023static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx) 3024{ 3025 struct wpa_supplicant *wpa_s = eloop_ctx; 3026 if (!wpa_s->pending_pd_before_join) 3027 return; 3028 /* 3029 * Provision Discovery Response may have been lost - try to connect 3030 * anyway since we do not need any information from this PD. 3031 */ 3032 wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - " 3033 "try to connect anyway"); 3034 wpas_p2p_join_start(wpa_s); 3035} 3036 3037 3038static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 3039{ 3040 struct wpa_supplicant *iface; 3041 int shared_freq; 3042 u8 bssid[ETH_ALEN]; 3043 3044 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) 3045 return 0; 3046 3047 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 3048 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s) 3049 continue; 3050 if (iface->current_ssid == NULL || iface->assoc_freq == 0) 3051 continue; 3052 if (iface->current_ssid->mode == WPAS_MODE_AP || 3053 iface->current_ssid->mode == WPAS_MODE_P2P_GO) 3054 shared_freq = iface->current_ssid->frequency; 3055 else if (wpa_drv_get_bssid(iface, bssid) == 0) 3056 shared_freq = iface->assoc_freq; 3057 else 3058 shared_freq = 0; 3059 3060 if (shared_freq && freq != shared_freq) { 3061 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s " 3062 "connected on %d MHz - new connection on " 3063 "%d MHz", iface->ifname, shared_freq, freq); 3064 return 1; 3065 } 3066 } 3067 3068 shared_freq = wpa_drv_shared_freq(wpa_s); 3069 if (shared_freq > 0 && shared_freq != freq) { 3070 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared " 3071 "virtual interface connected on %d MHz - new " 3072 "connection on %d MHz", shared_freq, freq); 3073 return 1; 3074 } 3075 3076 return 0; 3077} 3078 3079 3080static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 3081 const u8 *peer_dev_addr) 3082{ 3083 struct wpa_bss *bss; 3084 int updated; 3085 3086 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 3087 if (bss == NULL) 3088 return -1; 3089 if (bss->last_update_idx < wpa_s->bss_update_idx) { 3090 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 3091 "last scan"); 3092 return 0; 3093 } 3094 3095 updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update); 3096 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 3097 "%ld.%06ld (%supdated in last scan)", 3098 bss->last_update.sec, bss->last_update.usec, 3099 updated ? "": "not "); 3100 3101 return updated; 3102} 3103 3104 3105static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 3106 struct wpa_scan_results *scan_res) 3107{ 3108 struct wpa_bss *bss; 3109 int freq; 3110 u8 iface_addr[ETH_ALEN]; 3111 3112 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3113 3114 if (wpa_s->global->p2p_disabled) 3115 return; 3116 3117 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 3118 scan_res ? (int) scan_res->num : -1, 3119 wpa_s->p2p_auto_join ? "auto_" : ""); 3120 3121 if (scan_res) 3122 wpas_p2p_scan_res_handler(wpa_s, scan_res); 3123 3124 if (wpa_s->p2p_auto_pd) { 3125 int join = wpas_p2p_peer_go(wpa_s, 3126 wpa_s->pending_join_dev_addr); 3127 if (join == 0 && 3128 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 3129 wpa_s->auto_pd_scan_retry++; 3130 bss = wpa_bss_get_bssid(wpa_s, 3131 wpa_s->pending_join_dev_addr); 3132 if (bss) { 3133 freq = bss->freq; 3134 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 3135 "the peer " MACSTR " at %d MHz", 3136 wpa_s->auto_pd_scan_retry, 3137 MAC2STR(wpa_s-> 3138 pending_join_dev_addr), 3139 freq); 3140 wpas_p2p_join_scan_req(wpa_s, freq); 3141 return; 3142 } 3143 } 3144 3145 if (join < 0) 3146 join = 0; 3147 3148 wpa_s->p2p_auto_pd = 0; 3149 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 3150 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 3151 MAC2STR(wpa_s->pending_join_dev_addr), join); 3152 if (p2p_prov_disc_req(wpa_s->global->p2p, 3153 wpa_s->pending_join_dev_addr, 3154 wpa_s->pending_pd_config_methods, join, 3155 0) < 0) { 3156 wpa_s->p2p_auto_pd = 0; 3157 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 3158 " p2p_dev_addr=" MACSTR " status=N/A", 3159 MAC2STR(wpa_s->pending_join_dev_addr)); 3160 } 3161 return; 3162 } 3163 3164 if (wpa_s->p2p_auto_join) { 3165 int join = wpas_p2p_peer_go(wpa_s, 3166 wpa_s->pending_join_dev_addr); 3167 if (join < 0) { 3168 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 3169 "running a GO -> use GO Negotiation"); 3170 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 3171 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 3172 wpa_s->p2p_persistent_group, 0, 0, 0, 3173 wpa_s->p2p_go_intent, 3174 wpa_s->p2p_connect_freq, 3175 wpa_s->p2p_persistent_id, 3176 wpa_s->p2p_pd_before_go_neg, 3177 wpa_s->p2p_go_ht40); 3178 return; 3179 } 3180 3181 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 3182 "try to join the group", join ? "" : 3183 " in older scan"); 3184 if (!join) 3185 wpa_s->p2p_fallback_to_go_neg = 1; 3186 } 3187 3188 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3189 wpa_s->pending_join_iface_addr); 3190 if (freq < 0 && 3191 p2p_get_interface_addr(wpa_s->global->p2p, 3192 wpa_s->pending_join_dev_addr, 3193 iface_addr) == 0 && 3194 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 3195 { 3196 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 3197 "address for join from " MACSTR " to " MACSTR 3198 " based on newly discovered P2P peer entry", 3199 MAC2STR(wpa_s->pending_join_iface_addr), 3200 MAC2STR(iface_addr)); 3201 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 3202 ETH_ALEN); 3203 3204 freq = p2p_get_oper_freq(wpa_s->global->p2p, 3205 wpa_s->pending_join_iface_addr); 3206 } 3207 if (freq >= 0) { 3208 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3209 "from P2P peer table: %d MHz", freq); 3210 } 3211 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 3212 if (bss) { 3213 freq = bss->freq; 3214 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 3215 "from BSS table: %d MHz", freq); 3216 } 3217 if (freq > 0) { 3218 u16 method; 3219 3220 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 3221 wpa_msg(wpa_s->parent, MSG_INFO, 3222 P2P_EVENT_GROUP_FORMATION_FAILURE 3223 "reason=FREQ_CONFLICT"); 3224 return; 3225 } 3226 3227 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 3228 "prior to joining an existing group (GO " MACSTR 3229 " freq=%u MHz)", 3230 MAC2STR(wpa_s->pending_join_dev_addr), freq); 3231 wpa_s->pending_pd_before_join = 1; 3232 3233 switch (wpa_s->pending_join_wps_method) { 3234 case WPS_PIN_DISPLAY: 3235 method = WPS_CONFIG_KEYPAD; 3236 break; 3237 case WPS_PIN_KEYPAD: 3238 method = WPS_CONFIG_DISPLAY; 3239 break; 3240 case WPS_PBC: 3241 method = WPS_CONFIG_PUSHBUTTON; 3242 break; 3243 default: 3244 method = 0; 3245 break; 3246 } 3247 3248 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 3249 wpa_s->pending_join_dev_addr) == 3250 method)) { 3251 /* 3252 * We have already performed provision discovery for 3253 * joining the group. Proceed directly to join 3254 * operation without duplicated provision discovery. */ 3255 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 3256 "with " MACSTR " already done - proceed to " 3257 "join", 3258 MAC2STR(wpa_s->pending_join_dev_addr)); 3259 wpa_s->pending_pd_before_join = 0; 3260 goto start; 3261 } 3262 3263 if (p2p_prov_disc_req(wpa_s->global->p2p, 3264 wpa_s->pending_join_dev_addr, method, 1, 3265 freq) < 0) { 3266 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 3267 "Discovery Request before joining an " 3268 "existing group"); 3269 wpa_s->pending_pd_before_join = 0; 3270 goto start; 3271 } 3272 3273 /* 3274 * Actual join operation will be started from the Action frame 3275 * TX status callback (if no ACK is received) or when the 3276 * Provision Discovery Response is received. Use a short 3277 * timeout as a backup mechanism should the Provision Discovery 3278 * Response be lost for any reason. 3279 */ 3280 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, 3281 NULL); 3282 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout, 3283 wpa_s, NULL); 3284 return; 3285 } 3286 3287 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 3288 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3289 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3290 wpas_p2p_check_join_scan_limit(wpa_s); 3291 return; 3292 3293start: 3294 /* Start join operation immediately */ 3295 wpas_p2p_join_start(wpa_s); 3296} 3297 3298 3299static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq) 3300{ 3301 int ret; 3302 struct wpa_driver_scan_params params; 3303 struct wpabuf *wps_ie, *ies; 3304 size_t ielen; 3305 int freqs[2] = { 0, 0 }; 3306#ifdef ANDROID_P2P 3307 int oper_freq; 3308 3309 /* If freq is not provided, check the operating freq of the GO and do a 3310 * a directed scan to save time 3311 */ 3312 if(!freq) { 3313 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 3314 wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq; 3315 } 3316#endif 3317 os_memset(¶ms, 0, sizeof(params)); 3318 3319 /* P2P Wildcard SSID */ 3320 params.num_ssids = 1; 3321 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 3322 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 3323 3324 wpa_s->wps->dev.p2p = 1; 3325 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 3326 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 3327 NULL); 3328 if (wps_ie == NULL) { 3329 wpas_p2p_scan_res_join(wpa_s, NULL); 3330 return; 3331 } 3332 3333 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 3334 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 3335 if (ies == NULL) { 3336 wpabuf_free(wps_ie); 3337 wpas_p2p_scan_res_join(wpa_s, NULL); 3338 return; 3339 } 3340 wpabuf_put_buf(ies, wps_ie); 3341 wpabuf_free(wps_ie); 3342 3343 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 3344 3345 params.p2p_probe = 1; 3346 params.extra_ies = wpabuf_head(ies); 3347 params.extra_ies_len = wpabuf_len(ies); 3348 if (freq > 0) { 3349 freqs[0] = freq; 3350 params.freqs = freqs; 3351 } 3352 3353 /* 3354 * Run a scan to update BSS table and start Provision Discovery once 3355 * the new scan results become available. 3356 */ 3357 ret = wpa_drv_scan(wpa_s, ¶ms); 3358 if (!ret) 3359 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 3360 3361 wpabuf_free(ies); 3362 3363 if (ret) { 3364 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 3365 "try again later"); 3366 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3367 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3368 wpas_p2p_check_join_scan_limit(wpa_s); 3369 } 3370} 3371 3372 3373static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 3374{ 3375 struct wpa_supplicant *wpa_s = eloop_ctx; 3376 wpas_p2p_join_scan_req(wpa_s, 0); 3377} 3378 3379 3380static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 3381 const u8 *dev_addr, enum p2p_wps_method wps_method, 3382 int auto_join) 3383{ 3384 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 3385 MACSTR " dev " MACSTR ")%s", 3386 MAC2STR(iface_addr), MAC2STR(dev_addr), 3387 auto_join ? " (auto_join)" : ""); 3388 3389 wpa_s->p2p_auto_pd = 0; 3390 wpa_s->p2p_auto_join = !!auto_join; 3391 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 3392 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 3393 wpa_s->pending_join_wps_method = wps_method; 3394 3395 /* Make sure we are not running find during connection establishment */ 3396 wpas_p2p_stop_find(wpa_s); 3397 3398 wpa_s->p2p_join_scan_count = 0; 3399 wpas_p2p_join_scan(wpa_s, NULL); 3400 return 0; 3401} 3402 3403 3404static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) 3405{ 3406 struct wpa_supplicant *group; 3407 struct p2p_go_neg_results res; 3408 struct wpa_bss *bss; 3409 3410 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 3411 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 3412 if (group == NULL) 3413 return -1; 3414 if (group != wpa_s) { 3415 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 3416 sizeof(group->p2p_pin)); 3417 group->p2p_wps_method = wpa_s->p2p_wps_method; 3418 } 3419 3420 group->p2p_in_provisioning = 1; 3421 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 3422 3423 os_memset(&res, 0, sizeof(res)); 3424 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 3425 ETH_ALEN); 3426 res.wps_method = wpa_s->pending_join_wps_method; 3427 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 3428 if (bss) { 3429 res.freq = bss->freq; 3430 res.ssid_len = bss->ssid_len; 3431 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 3432 } 3433 3434 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 3435 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 3436 "starting client"); 3437 wpa_drv_cancel_remain_on_channel(wpa_s); 3438 wpa_s->off_channel_freq = 0; 3439 wpa_s->roc_waiting_drv_freq = 0; 3440 } 3441 wpas_start_wps_enrollee(group, &res); 3442 3443 /* 3444 * Allow a longer timeout for join-a-running-group than normal 15 3445 * second group formation timeout since the GO may not have authorized 3446 * our connection yet. 3447 */ 3448 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3449 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 3450 wpa_s, NULL); 3451 3452 return 0; 3453} 3454 3455 3456/** 3457 * wpas_p2p_connect - Request P2P Group Formation to be started 3458 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3459 * @peer_addr: Address of the peer P2P Device 3460 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 3461 * @persistent_group: Whether to create a persistent group 3462 * @auto_join: Whether to select join vs. GO Negotiation automatically 3463 * @join: Whether to join an existing group (as a client) instead of starting 3464 * Group Owner negotiation; @peer_addr is BSSID in that case 3465 * @auth: Whether to only authorize the connection instead of doing that and 3466 * initiating Group Owner negotiation 3467 * @go_intent: GO Intent or -1 to use default 3468 * @freq: Frequency for the group or 0 for auto-selection 3469 * @persistent_id: Persistent group credentials to use for forcing GO 3470 * parameters or -1 to generate new values (SSID/passphrase) 3471 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 3472 * interoperability workaround when initiating group formation 3473 * @ht40: Start GO with 40 MHz channel width 3474 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 3475 * failure, -2 on failure due to channel not currently available, 3476 * -3 if forced channel is not supported 3477 */ 3478int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3479 const char *pin, enum p2p_wps_method wps_method, 3480 int persistent_group, int auto_join, int join, int auth, 3481 int go_intent, int freq, int persistent_id, int pd, 3482 int ht40) 3483{ 3484 int force_freq = 0, oper_freq = 0; 3485 u8 bssid[ETH_ALEN]; 3486 int ret = 0; 3487 enum wpa_driver_if_type iftype; 3488 const u8 *if_addr; 3489 struct wpa_ssid *ssid = NULL; 3490 3491 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3492 return -1; 3493 3494 if (persistent_id >= 0) { 3495 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 3496 if (ssid == NULL || ssid->disabled != 2 || 3497 ssid->mode != WPAS_MODE_P2P_GO) 3498 return -1; 3499 } 3500 3501 if (go_intent < 0) 3502 go_intent = wpa_s->conf->p2p_go_intent; 3503 3504 if (!auth) 3505 wpa_s->p2p_long_listen = 0; 3506 3507 wpa_s->p2p_wps_method = wps_method; 3508 wpa_s->p2p_persistent_group = !!persistent_group; 3509 wpa_s->p2p_persistent_id = persistent_id; 3510 wpa_s->p2p_go_intent = go_intent; 3511 wpa_s->p2p_connect_freq = freq; 3512 wpa_s->p2p_fallback_to_go_neg = 0; 3513 wpa_s->p2p_pd_before_go_neg = !!pd; 3514 wpa_s->p2p_go_ht40 = !!ht40; 3515 3516 if (pin) 3517 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 3518 else if (wps_method == WPS_PIN_DISPLAY) { 3519 ret = wps_generate_pin(); 3520 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 3521 ret); 3522 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 3523 wpa_s->p2p_pin); 3524 } else 3525 wpa_s->p2p_pin[0] = '\0'; 3526 3527 if (join || auto_join) { 3528 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 3529 if (auth) { 3530 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 3531 "connect a running group from " MACSTR, 3532 MAC2STR(peer_addr)); 3533 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 3534 return ret; 3535 } 3536 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 3537 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 3538 iface_addr) < 0) { 3539 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 3540 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 3541 dev_addr); 3542 } 3543 if (auto_join) { 3544 os_get_time(&wpa_s->p2p_auto_started); 3545 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 3546 "%ld.%06ld", 3547 wpa_s->p2p_auto_started.sec, 3548 wpa_s->p2p_auto_started.usec); 3549 } 3550 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 3551 auto_join) < 0) 3552 return -1; 3553 return ret; 3554 } 3555 3556 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3557 wpa_s->assoc_freq) 3558 oper_freq = wpa_s->assoc_freq; 3559 else { 3560 oper_freq = wpa_drv_shared_freq(wpa_s); 3561 if (oper_freq < 0) 3562 oper_freq = 0; 3563 } 3564 3565 if (freq > 0) { 3566 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3567 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 3568 "(%u MHz) is not supported for P2P uses", 3569 freq); 3570 return -3; 3571 } 3572 3573 if (oper_freq > 0 && freq != oper_freq && 3574 !(wpa_s->drv_flags & 3575 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3576 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3577 "on %u MHz while connected on another " 3578 "channel (%u MHz)", freq, oper_freq); 3579 return -2; 3580 } 3581 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3582 "requested channel (%u MHz)", freq); 3583 force_freq = freq; 3584 } else if (oper_freq > 0 && 3585 !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { 3586 if (!(wpa_s->drv_flags & 3587 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3588 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3589 "while connected on non-P2P supported " 3590 "channel (%u MHz)", oper_freq); 3591 return -2; 3592 } 3593 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 3594 "(%u MHz) not available for P2P - try to use " 3595 "another channel", oper_freq); 3596 force_freq = 0; 3597 } else if (oper_freq > 0) { 3598 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3599 "channel we are already using (%u MHz) on another " 3600 "interface", oper_freq); 3601 force_freq = oper_freq; 3602 } 3603 3604 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 3605 3606 if (wpa_s->create_p2p_iface) { 3607 /* Prepare to add a new interface for the group */ 3608 iftype = WPA_IF_P2P_GROUP; 3609 if (go_intent == 15) 3610 iftype = WPA_IF_P2P_GO; 3611 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 3612 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3613 "interface for the group"); 3614 return -1; 3615 } 3616 3617 if_addr = wpa_s->pending_interface_addr; 3618 } else 3619 if_addr = wpa_s->own_addr; 3620 3621 if (auth) { 3622 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 3623 go_intent, if_addr, 3624 force_freq, persistent_group, ssid) < 3625 0) 3626 return -1; 3627 return ret; 3628 } 3629 3630 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 3631 go_intent, if_addr, force_freq, 3632 persistent_group, ssid) < 0) { 3633 if (wpa_s->create_p2p_iface) 3634 wpas_p2p_remove_pending_group_interface(wpa_s); 3635 return -1; 3636 } 3637 return ret; 3638} 3639 3640 3641/** 3642 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 3643 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3644 * @freq: Frequency of the channel in MHz 3645 * @duration: Duration of the stay on the channel in milliseconds 3646 * 3647 * This callback is called when the driver indicates that it has started the 3648 * requested remain-on-channel duration. 3649 */ 3650void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3651 unsigned int freq, unsigned int duration) 3652{ 3653 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3654 return; 3655 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 3656 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 3657 wpa_s->pending_listen_duration); 3658 wpa_s->pending_listen_freq = 0; 3659 } 3660} 3661 3662 3663static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 3664 unsigned int timeout) 3665{ 3666 /* Limit maximum Listen state time based on driver limitation. */ 3667 if (timeout > wpa_s->max_remain_on_chan) 3668 timeout = wpa_s->max_remain_on_chan; 3669 3670 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3671 return wpa_drv_p2p_listen(wpa_s, timeout); 3672 3673 return p2p_listen(wpa_s->global->p2p, timeout); 3674} 3675 3676 3677/** 3678 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 3679 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3680 * @freq: Frequency of the channel in MHz 3681 * 3682 * This callback is called when the driver indicates that a remain-on-channel 3683 * operation has been completed, i.e., the duration on the requested channel 3684 * has timed out. 3685 */ 3686void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3687 unsigned int freq) 3688{ 3689 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 3690 "(p2p_long_listen=%d ms pending_action_tx=%p)", 3691 wpa_s->p2p_long_listen, wpa_s->pending_action_tx); 3692 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3693 return; 3694 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 3695 return; /* P2P module started a new operation */ 3696 if (wpa_s->pending_action_tx) 3697 return; 3698 if (wpa_s->p2p_long_listen > 0) 3699 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 3700 if (wpa_s->p2p_long_listen > 0) { 3701 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 3702 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 3703 } 3704} 3705 3706 3707/** 3708 * wpas_p2p_group_remove - Remove a P2P group 3709 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3710 * @ifname: Network interface name of the group interface or "*" to remove all 3711 * groups 3712 * Returns: 0 on success, -1 on failure 3713 * 3714 * This function is used to remove a P2P group. This can be used to disconnect 3715 * from a group in which the local end is a P2P Client or to end a P2P Group in 3716 * case the local end is the Group Owner. If a virtual network interface was 3717 * created for this group, that interface will be removed. Otherwise, only the 3718 * configured P2P group network will be removed from the interface. 3719 */ 3720int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 3721{ 3722 struct wpa_global *global = wpa_s->global; 3723 3724 if (os_strcmp(ifname, "*") == 0) { 3725 struct wpa_supplicant *prev; 3726 wpa_s = global->ifaces; 3727 while (wpa_s) { 3728 prev = wpa_s; 3729 wpa_s = wpa_s->next; 3730 wpas_p2p_disconnect(prev); 3731 } 3732 return 0; 3733 } 3734 3735 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3736 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3737 break; 3738 } 3739 3740 return wpas_p2p_disconnect(wpa_s); 3741} 3742 3743 3744static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 3745 struct p2p_go_neg_results *params, 3746 int freq, int ht40) 3747{ 3748 u8 bssid[ETH_ALEN]; 3749 int res; 3750 3751 os_memset(params, 0, sizeof(*params)); 3752 params->role_go = 1; 3753 params->ht40 = ht40; 3754 if (freq) { 3755 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 3756 "frequency %d MHz", freq); 3757 params->freq = freq; 3758 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 3759 wpa_s->conf->p2p_oper_channel >= 1 && 3760 wpa_s->conf->p2p_oper_channel <= 11) { 3761 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 3762 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3763 "frequency %d MHz", params->freq); 3764 } else if (wpa_s->conf->p2p_oper_reg_class == 115 || 3765 wpa_s->conf->p2p_oper_reg_class == 124) { 3766 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 3767 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3768 "frequency %d MHz", params->freq); 3769 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3770 wpa_s->best_overall_freq > 0 && 3771 p2p_supported_freq(wpa_s->global->p2p, 3772 wpa_s->best_overall_freq)) { 3773 params->freq = wpa_s->best_overall_freq; 3774 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 3775 "channel %d MHz", params->freq); 3776 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3777 wpa_s->best_24_freq > 0 && 3778 p2p_supported_freq(wpa_s->global->p2p, 3779 wpa_s->best_24_freq)) { 3780 params->freq = wpa_s->best_24_freq; 3781 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 3782 "channel %d MHz", params->freq); 3783 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3784 wpa_s->best_5_freq > 0 && 3785 p2p_supported_freq(wpa_s->global->p2p, 3786 wpa_s->best_5_freq)) { 3787 params->freq = wpa_s->best_5_freq; 3788 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 3789 "channel %d MHz", params->freq); 3790 } else { 3791 int chan; 3792 for (chan = 0; chan < 11; chan++) { 3793 params->freq = 2412 + chan * 5; 3794 if (!wpas_p2p_disallowed_freq(wpa_s->global, 3795 params->freq)) 3796 break; 3797 } 3798 if (chan == 11) { 3799 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " 3800 "allowed"); 3801 return -1; 3802 } 3803 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 3804 "known)", params->freq); 3805 } 3806 3807 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3808 wpa_s->assoc_freq && !freq) { 3809 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3810 "already using"); 3811 params->freq = wpa_s->assoc_freq; 3812 } 3813 3814 res = wpa_drv_shared_freq(wpa_s); 3815 if (res > 0 && !freq) { 3816 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3817 "already using on a shared interface"); 3818 params->freq = res; 3819 } else if (res > 0 && freq != res && 3820 !(wpa_s->drv_flags & 3821 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3822 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " 3823 "while connected on another channel (%u MHz)", 3824 freq, res); 3825 return -1; 3826 } 3827 3828 return 0; 3829} 3830 3831 3832static struct wpa_supplicant * 3833wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 3834 int go) 3835{ 3836 struct wpa_supplicant *group_wpa_s; 3837 3838 if (!wpas_p2p_create_iface(wpa_s)) { 3839 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 3840 "operations"); 3841 return wpa_s; 3842 } 3843 3844 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 3845 WPA_IF_P2P_CLIENT) < 0) { 3846 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface"); 3847 return NULL; 3848 } 3849 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 3850 if (group_wpa_s == NULL) { 3851 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group " 3852 "interface"); 3853 wpas_p2p_remove_pending_group_interface(wpa_s); 3854 return NULL; 3855 } 3856 3857 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 3858 group_wpa_s->ifname); 3859 return group_wpa_s; 3860} 3861 3862 3863/** 3864 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 3865 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3866 * @persistent_group: Whether to create a persistent group 3867 * @freq: Frequency for the group or 0 to indicate no hardcoding 3868 * Returns: 0 on success, -1 on failure 3869 * 3870 * This function creates a new P2P group with the local end as the Group Owner, 3871 * i.e., without using Group Owner Negotiation. 3872 */ 3873int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 3874 int freq, int ht40) 3875{ 3876 struct p2p_go_neg_results params; 3877 unsigned int r; 3878 3879 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3880 return -1; 3881 3882 /* Make sure we are not running find during connection establishment */ 3883 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 3884 wpas_p2p_stop_find(wpa_s); 3885 3886 if (freq == 2) { 3887 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 3888 "band"); 3889 if (wpa_s->best_24_freq > 0 && 3890 p2p_supported_freq(wpa_s->global->p2p, 3891 wpa_s->best_24_freq)) { 3892 freq = wpa_s->best_24_freq; 3893 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 3894 "channel: %d MHz", freq); 3895 } else { 3896 os_get_random((u8 *) &r, sizeof(r)); 3897 freq = 2412 + (r % 3) * 25; 3898 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 3899 "channel: %d MHz", freq); 3900 } 3901 } 3902 3903 if (freq == 5) { 3904 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 3905 "band"); 3906 if (wpa_s->best_5_freq > 0 && 3907 p2p_supported_freq(wpa_s->global->p2p, 3908 wpa_s->best_5_freq)) { 3909 freq = wpa_s->best_5_freq; 3910 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 3911 "channel: %d MHz", freq); 3912 } else { 3913 os_get_random((u8 *) &r, sizeof(r)); 3914 freq = 5180 + (r % 4) * 20; 3915 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3916 wpa_printf(MSG_DEBUG, "P2P: Could not select " 3917 "5 GHz channel for P2P group"); 3918 return -1; 3919 } 3920 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 3921 "channel: %d MHz", freq); 3922 } 3923 } 3924 3925 if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { 3926 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 3927 "(%u MHz) is not supported for P2P uses", 3928 freq); 3929 return -1; 3930 } 3931 3932 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) 3933 return -1; 3934 if (params.freq && 3935 !p2p_supported_freq(wpa_s->global->p2p, params.freq)) { 3936 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " 3937 "(%u MHz) is not supported for P2P uses", 3938 params.freq); 3939 return -1; 3940 } 3941 p2p_go_params(wpa_s->global->p2p, ¶ms); 3942 params.persistent_group = persistent_group; 3943 3944 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 3945 if (wpa_s == NULL) 3946 return -1; 3947 wpas_start_wps_go(wpa_s, ¶ms, 0); 3948 3949 return 0; 3950} 3951 3952 3953static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 3954 struct wpa_ssid *params, int addr_allocated) 3955{ 3956 struct wpa_ssid *ssid; 3957 3958 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 3959 if (wpa_s == NULL) 3960 return -1; 3961 3962 wpa_supplicant_ap_deinit(wpa_s); 3963 3964 ssid = wpa_config_add_network(wpa_s->conf); 3965 if (ssid == NULL) 3966 return -1; 3967 wpa_config_set_network_defaults(ssid); 3968 ssid->temporary = 1; 3969 ssid->proto = WPA_PROTO_RSN; 3970 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 3971 ssid->group_cipher = WPA_CIPHER_CCMP; 3972 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 3973 ssid->ssid = os_malloc(params->ssid_len); 3974 if (ssid->ssid == NULL) { 3975 wpa_config_remove_network(wpa_s->conf, ssid->id); 3976 return -1; 3977 } 3978 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 3979 ssid->ssid_len = params->ssid_len; 3980 ssid->p2p_group = 1; 3981 ssid->export_keys = 1; 3982 if (params->psk_set) { 3983 os_memcpy(ssid->psk, params->psk, 32); 3984 ssid->psk_set = 1; 3985 } 3986 if (params->passphrase) 3987 ssid->passphrase = os_strdup(params->passphrase); 3988 3989 wpa_supplicant_select_network(wpa_s, ssid); 3990 3991 wpa_s->show_group_started = 1; 3992 3993 return 0; 3994} 3995 3996 3997int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 3998 struct wpa_ssid *ssid, int addr_allocated, 3999 int freq, int ht40) 4000{ 4001 struct p2p_go_neg_results params; 4002 int go = 0; 4003 4004 if (ssid->disabled != 2 || ssid->ssid == NULL) 4005 return -1; 4006 4007 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 4008 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 4009 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 4010 "already running"); 4011 return 0; 4012 } 4013 4014 /* Make sure we are not running find during connection establishment */ 4015 wpas_p2p_stop_find(wpa_s); 4016 4017 wpa_s->p2p_fallback_to_go_neg = 0; 4018 4019 if (ssid->mode == WPAS_MODE_INFRA) 4020 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); 4021 4022 if (ssid->mode != WPAS_MODE_P2P_GO) 4023 return -1; 4024 4025 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) 4026 return -1; 4027 4028 params.role_go = 1; 4029 if (ssid->passphrase == NULL || 4030 os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 4031 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent " 4032 "group"); 4033 return -1; 4034 } 4035 os_strlcpy(params.passphrase, ssid->passphrase, 4036 sizeof(params.passphrase)); 4037 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 4038 params.ssid_len = ssid->ssid_len; 4039 params.persistent_group = 1; 4040 4041 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 4042 if (wpa_s == NULL) 4043 return -1; 4044 4045 wpas_start_wps_go(wpa_s, ¶ms, 0); 4046 4047 return 0; 4048} 4049 4050 4051static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 4052 struct wpabuf *proberesp_ies) 4053{ 4054 struct wpa_supplicant *wpa_s = ctx; 4055 if (wpa_s->ap_iface) { 4056 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 4057 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 4058 wpabuf_free(beacon_ies); 4059 wpabuf_free(proberesp_ies); 4060 return; 4061 } 4062 if (beacon_ies) { 4063 wpabuf_free(hapd->p2p_beacon_ie); 4064 hapd->p2p_beacon_ie = beacon_ies; 4065 } 4066 wpabuf_free(hapd->p2p_probe_resp_ie); 4067 hapd->p2p_probe_resp_ie = proberesp_ies; 4068 } else { 4069 wpabuf_free(beacon_ies); 4070 wpabuf_free(proberesp_ies); 4071 } 4072 wpa_supplicant_ap_update_beacon(wpa_s); 4073} 4074 4075 4076static void wpas_p2p_idle_update(void *ctx, int idle) 4077{ 4078 struct wpa_supplicant *wpa_s = ctx; 4079 if (!wpa_s->ap_iface) 4080 return; 4081 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 4082 if (idle) 4083 wpas_p2p_set_group_idle_timeout(wpa_s); 4084 else 4085 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4086} 4087 4088 4089struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 4090 struct wpa_ssid *ssid) 4091{ 4092 struct p2p_group *group; 4093 struct p2p_group_config *cfg; 4094 4095 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4096 return NULL; 4097 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4098 return NULL; 4099 4100 cfg = os_zalloc(sizeof(*cfg)); 4101 if (cfg == NULL) 4102 return NULL; 4103 4104 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 4105 cfg->persistent_group = 2; 4106 else if (ssid->p2p_persistent_group) 4107 cfg->persistent_group = 1; 4108 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 4109 if (wpa_s->max_stations && 4110 wpa_s->max_stations < wpa_s->conf->max_num_sta) 4111 cfg->max_clients = wpa_s->max_stations; 4112 else 4113 cfg->max_clients = wpa_s->conf->max_num_sta; 4114 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 4115 cfg->ssid_len = ssid->ssid_len; 4116 cfg->cb_ctx = wpa_s; 4117 cfg->ie_update = wpas_p2p_ie_update; 4118 cfg->idle_update = wpas_p2p_idle_update; 4119 4120 group = p2p_group_init(wpa_s->global->p2p, cfg); 4121 if (group == NULL) 4122 os_free(cfg); 4123 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 4124 p2p_group_notif_formation_done(group); 4125 wpa_s->p2p_group = group; 4126 return group; 4127} 4128 4129 4130void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4131 int registrar) 4132{ 4133 struct wpa_ssid *ssid = wpa_s->current_ssid; 4134 4135 if (!wpa_s->p2p_in_provisioning) { 4136 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 4137 "provisioning not in progress"); 4138 return; 4139 } 4140 4141 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4142 u8 go_dev_addr[ETH_ALEN]; 4143 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 4144 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4145 ssid->ssid_len); 4146 /* Clear any stored provisioning info */ 4147 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 4148 } 4149 4150 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 4151 NULL); 4152 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 4153 /* 4154 * Use a separate timeout for initial data connection to 4155 * complete to allow the group to be removed automatically if 4156 * something goes wrong in this step before the P2P group idle 4157 * timeout mechanism is taken into use. 4158 */ 4159 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 4160 wpas_p2p_group_formation_timeout, 4161 wpa_s->parent, NULL); 4162 } 4163 if (wpa_s->global->p2p) 4164 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 4165 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4166 wpa_drv_wps_success_cb(wpa_s, peer_addr); 4167 wpas_group_formation_completed(wpa_s, 1); 4168} 4169 4170 4171void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 4172 struct wps_event_fail *fail) 4173{ 4174 if (!wpa_s->p2p_in_provisioning) { 4175 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 4176 "provisioning not in progress"); 4177 return; 4178 } 4179 4180 if (wpa_s->go_params) { 4181 p2p_clear_provisioning_info( 4182 wpa_s->global->p2p, 4183 wpa_s->go_params->peer_device_addr); 4184 } 4185 4186 wpas_notify_p2p_wps_failed(wpa_s, fail); 4187} 4188 4189 4190int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4191 const char *config_method, 4192 enum wpas_p2p_prov_disc_use use) 4193{ 4194 u16 config_methods; 4195 4196 wpa_s->p2p_fallback_to_go_neg = 0; 4197 wpa_s->pending_pd_use = NORMAL_PD; 4198 if (os_strncmp(config_method, "display", 7) == 0) 4199 config_methods = WPS_CONFIG_DISPLAY; 4200 else if (os_strncmp(config_method, "keypad", 6) == 0) 4201 config_methods = WPS_CONFIG_KEYPAD; 4202 else if (os_strncmp(config_method, "pbc", 3) == 0 || 4203 os_strncmp(config_method, "pushbutton", 10) == 0) 4204 config_methods = WPS_CONFIG_PUSHBUTTON; 4205 else { 4206 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 4207 return -1; 4208 } 4209 4210 if (use == WPAS_P2P_PD_AUTO) { 4211 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 4212 wpa_s->pending_pd_config_methods = config_methods; 4213 wpa_s->p2p_auto_pd = 1; 4214 wpa_s->p2p_auto_join = 0; 4215 wpa_s->pending_pd_before_join = 0; 4216 wpa_s->auto_pd_scan_retry = 0; 4217 wpas_p2p_stop_find(wpa_s); 4218 wpa_s->p2p_join_scan_count = 0; 4219 os_get_time(&wpa_s->p2p_auto_started); 4220 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 4221 wpa_s->p2p_auto_started.sec, 4222 wpa_s->p2p_auto_started.usec); 4223 wpas_p2p_join_scan(wpa_s, NULL); 4224 return 0; 4225 } 4226 4227 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4228 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, 4229 config_methods, 4230 use == WPAS_P2P_PD_FOR_JOIN); 4231 } 4232 4233 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 4234 return -1; 4235 4236 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 4237 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 4238 0); 4239} 4240 4241 4242int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 4243 char *end) 4244{ 4245 return p2p_scan_result_text(ies, ies_len, buf, end); 4246} 4247 4248 4249static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 4250{ 4251 if (!wpa_s->pending_action_tx) 4252 return; 4253 4254 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 4255 "operation request"); 4256 wpabuf_free(wpa_s->pending_action_tx); 4257 wpa_s->pending_action_tx = NULL; 4258} 4259 4260 4261int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 4262 enum p2p_discovery_type type, 4263 unsigned int num_req_dev_types, const u8 *req_dev_types, 4264 const u8 *dev_id, unsigned int search_delay) 4265{ 4266 wpas_p2p_clear_pending_action_tx(wpa_s); 4267 wpa_s->p2p_long_listen = 0; 4268 4269 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4270 return wpa_drv_p2p_find(wpa_s, timeout, type); 4271 4272 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 4273 wpa_s->p2p_in_provisioning) 4274 return -1; 4275 4276 wpa_supplicant_cancel_sched_scan(wpa_s); 4277 4278 return p2p_find(wpa_s->global->p2p, timeout, type, 4279 num_req_dev_types, req_dev_types, dev_id, 4280 search_delay); 4281} 4282 4283 4284void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 4285{ 4286 wpas_p2p_clear_pending_action_tx(wpa_s); 4287 wpa_s->p2p_long_listen = 0; 4288 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4289 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4290 wpa_s->global->p2p_cb_on_scan_complete = 0; 4291 4292 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 4293 wpa_drv_p2p_stop_find(wpa_s); 4294 return; 4295 } 4296 4297 if (wpa_s->global->p2p) 4298 p2p_stop_find(wpa_s->global->p2p); 4299 4300 wpas_p2p_remove_pending_group_interface(wpa_s); 4301} 4302 4303 4304static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 4305{ 4306 struct wpa_supplicant *wpa_s = eloop_ctx; 4307 wpa_s->p2p_long_listen = 0; 4308} 4309 4310 4311int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 4312{ 4313 int res; 4314 4315 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4316 return -1; 4317 4318 wpa_supplicant_cancel_sched_scan(wpa_s); 4319 wpas_p2p_clear_pending_action_tx(wpa_s); 4320 4321 if (timeout == 0) { 4322 /* 4323 * This is a request for unlimited Listen state. However, at 4324 * least for now, this is mapped to a Listen state for one 4325 * hour. 4326 */ 4327 timeout = 3600; 4328 } 4329 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 4330 wpa_s->p2p_long_listen = 0; 4331 4332 /* 4333 * Stop previous find/listen operation to avoid trying to request a new 4334 * remain-on-channel operation while the driver is still running the 4335 * previous one. 4336 */ 4337 if (wpa_s->global->p2p) 4338 p2p_stop_find(wpa_s->global->p2p); 4339 4340 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 4341 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 4342 wpa_s->p2p_long_listen = timeout * 1000; 4343 eloop_register_timeout(timeout, 0, 4344 wpas_p2p_long_listen_timeout, 4345 wpa_s, NULL); 4346 } 4347 4348 return res; 4349} 4350 4351 4352int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 4353 u8 *buf, size_t len, int p2p_group) 4354{ 4355 struct wpabuf *p2p_ie; 4356 int ret; 4357 4358 if (wpa_s->global->p2p_disabled) 4359 return -1; 4360 if (wpa_s->global->p2p == NULL) 4361 return -1; 4362 if (bss == NULL) 4363 return -1; 4364 4365 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 4366 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 4367 p2p_group, p2p_ie); 4368 wpabuf_free(p2p_ie); 4369 4370 return ret; 4371} 4372 4373 4374int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 4375 const u8 *dst, const u8 *bssid, 4376 const u8 *ie, size_t ie_len, int ssi_signal) 4377{ 4378 if (wpa_s->global->p2p_disabled) 4379 return 0; 4380 if (wpa_s->global->p2p == NULL) 4381 return 0; 4382 4383 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 4384 ie, ie_len)) { 4385 case P2P_PREQ_NOT_P2P: 4386 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 4387 ssi_signal); 4388 /* fall through */ 4389 case P2P_PREQ_MALFORMED: 4390 case P2P_PREQ_NOT_LISTEN: 4391 case P2P_PREQ_NOT_PROCESSED: 4392 default: /* make gcc happy */ 4393 return 0; 4394 case P2P_PREQ_PROCESSED: 4395 return 1; 4396 } 4397} 4398 4399 4400void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 4401 const u8 *sa, const u8 *bssid, 4402 u8 category, const u8 *data, size_t len, int freq) 4403{ 4404 if (wpa_s->global->p2p_disabled) 4405 return; 4406 if (wpa_s->global->p2p == NULL) 4407 return; 4408 4409 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 4410 freq); 4411} 4412 4413 4414void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 4415{ 4416 if (wpa_s->global->p2p_disabled) 4417 return; 4418 if (wpa_s->global->p2p == NULL) 4419 return; 4420 4421 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4422} 4423 4424 4425void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 4426{ 4427 p2p_group_deinit(wpa_s->p2p_group); 4428 wpa_s->p2p_group = NULL; 4429 4430 wpa_s->ap_configured_cb = NULL; 4431 wpa_s->ap_configured_cb_ctx = NULL; 4432 wpa_s->ap_configured_cb_data = NULL; 4433 wpa_s->connect_without_scan = NULL; 4434} 4435 4436 4437int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 4438{ 4439 wpa_s->p2p_long_listen = 0; 4440 4441 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4442 return wpa_drv_p2p_reject(wpa_s, addr); 4443 4444 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4445 return -1; 4446 4447 return p2p_reject(wpa_s->global->p2p, addr); 4448} 4449 4450 4451/* Invite to reinvoke a persistent group */ 4452int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4453 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 4454 int ht40) 4455{ 4456 enum p2p_invite_role role; 4457 u8 *bssid = NULL; 4458#ifdef ANDROID_P2P 4459 int force_freq = 0, oper_freq = 0; 4460#endif 4461 4462 wpa_s->p2p_persistent_go_freq = freq; 4463 wpa_s->p2p_go_ht40 = !!ht40; 4464 if (ssid->mode == WPAS_MODE_P2P_GO) { 4465 role = P2P_INVITE_ROLE_GO; 4466 if (peer_addr == NULL) { 4467 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 4468 "address in invitation command"); 4469 return -1; 4470 } 4471 if (wpas_p2p_create_iface(wpa_s)) { 4472 if (wpas_p2p_add_group_interface(wpa_s, 4473 WPA_IF_P2P_GO) < 0) { 4474 wpa_printf(MSG_ERROR, "P2P: Failed to " 4475 "allocate a new interface for the " 4476 "group"); 4477 return -1; 4478 } 4479 bssid = wpa_s->pending_interface_addr; 4480 } else 4481 bssid = wpa_s->own_addr; 4482 } else { 4483 role = P2P_INVITE_ROLE_CLIENT; 4484 peer_addr = ssid->bssid; 4485 } 4486 wpa_s->pending_invite_ssid_id = ssid->id; 4487 4488#ifdef ANDROID_P2P 4489 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 4490 wpa_s->assoc_freq) 4491 oper_freq = wpa_s->assoc_freq; 4492 else { 4493 oper_freq = wpa_drv_shared_freq(wpa_s); 4494 if (oper_freq < 0) 4495 oper_freq = 0; 4496 } 4497 4498 if (freq > 0) { 4499 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 4500 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 4501 "(%u MHz) is not supported for P2P uses", 4502 freq); 4503 return -3; 4504 } 4505 4506 if (oper_freq > 0 && freq != oper_freq && 4507 !(wpa_s->drv_flags & 4508 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 4509 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 4510 "on %u MHz while connected on another " 4511 "channel (%u MHz)", freq, oper_freq); 4512 return -2; 4513 } 4514 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 4515 "requested channel (%u MHz)", freq); 4516 force_freq = freq; 4517 } else if (oper_freq > 0 && 4518 !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { 4519 if (!(wpa_s->drv_flags & 4520 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 4521 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 4522 "while connected on non-P2P supported " 4523 "channel (%u MHz)", oper_freq); 4524 return -2; 4525 } 4526 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 4527 "(%u MHz) not available for P2P - try to use " 4528 "another channel", oper_freq); 4529 force_freq = 0; 4530 } else if (oper_freq > 0) { 4531 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 4532 "channel we are already using (%u MHz) on another " 4533 "interface", oper_freq); 4534 force_freq = oper_freq; 4535 } 4536#endif 4537 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4538 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4539 ssid->ssid, ssid->ssid_len, 4540 go_dev_addr, 1); 4541 4542 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4543 return -1; 4544 4545#ifdef ANDROID_P2P 4546 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4547 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 1); 4548#else 4549 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4550 ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1); 4551#endif 4552} 4553 4554 4555/* Invite to join an active group */ 4556int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 4557 const u8 *peer_addr, const u8 *go_dev_addr) 4558{ 4559 struct wpa_global *global = wpa_s->global; 4560 enum p2p_invite_role role; 4561 u8 *bssid = NULL; 4562 struct wpa_ssid *ssid; 4563 int persistent; 4564 4565 wpa_s->p2p_persistent_go_freq = 0; 4566 wpa_s->p2p_go_ht40 = 0; 4567 4568 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4569 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4570 break; 4571 } 4572 if (wpa_s == NULL) { 4573 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 4574 return -1; 4575 } 4576 4577 ssid = wpa_s->current_ssid; 4578 if (ssid == NULL) { 4579 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 4580 "invitation"); 4581 return -1; 4582 } 4583 4584 persistent = ssid->p2p_persistent_group && 4585 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 4586 ssid->ssid, ssid->ssid_len); 4587 4588 if (ssid->mode == WPAS_MODE_P2P_GO) { 4589 role = P2P_INVITE_ROLE_ACTIVE_GO; 4590 bssid = wpa_s->own_addr; 4591 if (go_dev_addr == NULL) 4592 go_dev_addr = wpa_s->global->p2p_dev_addr; 4593 } else { 4594 role = P2P_INVITE_ROLE_CLIENT; 4595 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 4596 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 4597 "invite to current group"); 4598 return -1; 4599 } 4600 bssid = wpa_s->bssid; 4601 if (go_dev_addr == NULL && 4602 !is_zero_ether_addr(wpa_s->go_dev_addr)) 4603 go_dev_addr = wpa_s->go_dev_addr; 4604 } 4605 wpa_s->parent->pending_invite_ssid_id = -1; 4606 4607 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4608 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4609 ssid->ssid, ssid->ssid_len, 4610 go_dev_addr, persistent); 4611 4612 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4613 return -1; 4614 4615 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4616 ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq, 4617 go_dev_addr, persistent); 4618} 4619 4620 4621void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 4622{ 4623 struct wpa_ssid *ssid = wpa_s->current_ssid; 4624 const char *ssid_txt; 4625 u8 go_dev_addr[ETH_ALEN]; 4626 int network_id = -1; 4627 int persistent; 4628 int freq; 4629 4630 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 4631 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4632 wpa_s->parent, NULL); 4633 } 4634 4635 if (!wpa_s->show_group_started || !ssid) 4636 goto done; 4637 4638 wpa_s->show_group_started = 0; 4639 4640 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 4641 os_memset(go_dev_addr, 0, ETH_ALEN); 4642 if (ssid->bssid_set) 4643 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 4644 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4645 ssid->ssid_len); 4646 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 4647 4648 if (wpa_s->global->p2p_group_formation == wpa_s) 4649 wpa_s->global->p2p_group_formation = NULL; 4650 4651 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 4652 (int) wpa_s->assoc_freq; 4653 if (ssid->passphrase == NULL && ssid->psk_set) { 4654 char psk[65]; 4655 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 4656 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4657 "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 4658 MACSTR "%s", 4659 wpa_s->ifname, ssid_txt, freq, psk, 4660 MAC2STR(go_dev_addr), 4661 persistent ? " [PERSISTENT]" : ""); 4662 } else { 4663 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4664 "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " 4665 "go_dev_addr=" MACSTR "%s", 4666 wpa_s->ifname, ssid_txt, freq, 4667 ssid->passphrase ? ssid->passphrase : "", 4668 MAC2STR(go_dev_addr), 4669 persistent ? " [PERSISTENT]" : ""); 4670 } 4671 4672 if (persistent) 4673 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 4674 ssid, go_dev_addr); 4675 if (network_id < 0) 4676 network_id = ssid->id; 4677 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 4678 4679done: 4680 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 4681 wpa_s->global->p2p != NULL) { 4682 wpa_s->global->p2p_cb_on_scan_complete = 0; 4683 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 4684 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 4685 "continued after successful connection"); 4686 p2p_increase_search_delay( 4687 wpa_s->global->p2p, 4688 wpas_p2p_search_delay(wpa_s)); 4689 } 4690 } 4691} 4692 4693 4694int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 4695 u32 interval1, u32 duration2, u32 interval2) 4696{ 4697 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4698 return -1; 4699 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4700 return -1; 4701 4702 if (wpa_s->wpa_state < WPA_ASSOCIATED || 4703 wpa_s->current_ssid == NULL || 4704 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 4705 return -1; 4706 4707 return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 4708 wpa_s->own_addr, wpa_s->assoc_freq, 4709 duration1, interval1, duration2, interval2); 4710} 4711 4712 4713int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 4714 unsigned int interval) 4715{ 4716 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4717 return -1; 4718 4719 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4720 return -1; 4721 4722 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 4723} 4724 4725 4726static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 4727{ 4728 return wpa_s->current_ssid != NULL && 4729 wpa_s->current_ssid->p2p_group && 4730 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 4731} 4732 4733 4734static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 4735{ 4736 struct wpa_supplicant *wpa_s = eloop_ctx; 4737 4738 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 4739 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 4740 "disabled"); 4741 return; 4742 } 4743 4744 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 4745 "group"); 4746 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 4747} 4748 4749 4750static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 4751{ 4752 int timeout; 4753 4754 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 4755 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 4756 4757 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 4758 return; 4759 4760 timeout = wpa_s->conf->p2p_group_idle; 4761 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 4762 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 4763 timeout = P2P_MAX_CLIENT_IDLE; 4764 4765 if (timeout == 0) 4766 return; 4767 4768 if (timeout < 0) { 4769 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 4770 timeout = 0; /* special client mode no-timeout */ 4771 else 4772 return; 4773 } 4774 4775 if (wpa_s->p2p_in_provisioning) { 4776 /* 4777 * Use the normal group formation timeout during the 4778 * provisioning phase to avoid terminating this process too 4779 * early due to group idle timeout. 4780 */ 4781 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4782 "during provisioning"); 4783 return; 4784 } 4785#ifndef ANDROID_P2P 4786 if (wpa_s->show_group_started) { 4787 /* 4788 * Use the normal group formation timeout between the end of 4789 * the provisioning phase and completion of 4-way handshake to 4790 * avoid terminating this process too early due to group idle 4791 * timeout. 4792 */ 4793 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4794 "while waiting for initial 4-way handshake to " 4795 "complete"); 4796 return; 4797 } 4798#endif 4799 4800 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 4801 timeout); 4802 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 4803 wpa_s, NULL); 4804} 4805 4806 4807/* Returns 1 if the interface was removed */ 4808int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4809 u16 reason_code, const u8 *ie, size_t ie_len, 4810 int locally_generated) 4811{ 4812 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4813 return 0; 4814 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4815 return 0; 4816 4817 if (!locally_generated) 4818 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4819 ie_len); 4820 4821 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 4822 wpa_s->current_ssid && 4823 wpa_s->current_ssid->p2p_group && 4824 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 4825 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 4826 "session is ending"); 4827 if (wpas_p2p_group_delete(wpa_s, 4828 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 4829 > 0) 4830 return 1; 4831 } 4832 4833 return 0; 4834} 4835 4836 4837void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4838 u16 reason_code, const u8 *ie, size_t ie_len, 4839 int locally_generated) 4840{ 4841 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4842 return; 4843 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4844 return; 4845 4846 if (!locally_generated) 4847 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4848 ie_len); 4849} 4850 4851 4852void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 4853{ 4854 struct p2p_data *p2p = wpa_s->global->p2p; 4855 4856 if (p2p == NULL) 4857 return; 4858 4859 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4860 return; 4861 4862 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 4863 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 4864 4865 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 4866 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 4867 4868 if (wpa_s->wps && 4869 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 4870 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 4871 4872 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 4873 p2p_set_uuid(p2p, wpa_s->wps->uuid); 4874 4875 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 4876 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 4877 p2p_set_model_name(p2p, wpa_s->conf->model_name); 4878 p2p_set_model_number(p2p, wpa_s->conf->model_number); 4879 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 4880 } 4881 4882 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 4883 p2p_set_sec_dev_types(p2p, 4884 (void *) wpa_s->conf->sec_device_type, 4885 wpa_s->conf->num_sec_device_types); 4886 4887 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 4888 int i; 4889 p2p_remove_wps_vendor_extensions(p2p); 4890 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4891 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4892 continue; 4893 p2p_add_wps_vendor_extension( 4894 p2p, wpa_s->conf->wps_vendor_ext[i]); 4895 } 4896 } 4897 4898 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 4899 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4900 char country[3]; 4901 country[0] = wpa_s->conf->country[0]; 4902 country[1] = wpa_s->conf->country[1]; 4903 country[2] = 0x04; 4904 p2p_set_country(p2p, country); 4905 } 4906 4907 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 4908 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 4909 wpa_s->conf->p2p_ssid_postfix ? 4910 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 4911 0); 4912 } 4913 4914 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 4915 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 4916 4917 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 4918 u8 reg_class, channel; 4919 int ret; 4920 unsigned int r; 4921 if (wpa_s->conf->p2p_listen_reg_class && 4922 wpa_s->conf->p2p_listen_channel) { 4923 reg_class = wpa_s->conf->p2p_listen_reg_class; 4924 channel = wpa_s->conf->p2p_listen_channel; 4925 } else { 4926 reg_class = 81; 4927 /* 4928 * Pick one of the social channels randomly as the 4929 * listen channel. 4930 */ 4931 os_get_random((u8 *) &r, sizeof(r)); 4932 channel = 1 + (r % 3) * 5; 4933 } 4934 ret = p2p_set_listen_channel(p2p, reg_class, channel); 4935 if (ret) 4936 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 4937 "failed: %d", ret); 4938 } 4939 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 4940 u8 op_reg_class, op_channel, cfg_op_channel; 4941 int ret = 0; 4942 unsigned int r; 4943 if (wpa_s->conf->p2p_oper_reg_class && 4944 wpa_s->conf->p2p_oper_channel) { 4945 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4946 op_channel = wpa_s->conf->p2p_oper_channel; 4947 cfg_op_channel = 1; 4948 } else { 4949 op_reg_class = 81; 4950 /* 4951 * Use random operation channel from (1, 6, 11) 4952 *if no other preference is indicated. 4953 */ 4954 os_get_random((u8 *) &r, sizeof(r)); 4955 op_channel = 1 + (r % 3) * 5; 4956 cfg_op_channel = 0; 4957 } 4958 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 4959 cfg_op_channel); 4960 if (ret) 4961 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 4962 "failed: %d", ret); 4963 } 4964 4965 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 4966 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 4967 wpa_s->conf->p2p_pref_chan) < 0) { 4968 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 4969 "update failed"); 4970 } 4971 } 4972} 4973 4974 4975int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 4976 int duration) 4977{ 4978 if (!wpa_s->ap_iface) 4979 return -1; 4980 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 4981 duration); 4982} 4983 4984 4985int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 4986{ 4987 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4988 return -1; 4989 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4990 return -1; 4991 4992 wpa_s->global->cross_connection = enabled; 4993 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 4994 4995 if (!enabled) { 4996 struct wpa_supplicant *iface; 4997 4998 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 4999 { 5000 if (iface->cross_connect_enabled == 0) 5001 continue; 5002 5003 iface->cross_connect_enabled = 0; 5004 iface->cross_connect_in_use = 0; 5005 wpa_msg(iface->parent, MSG_INFO, 5006 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5007 iface->ifname, iface->cross_connect_uplink); 5008 } 5009 } 5010 5011 return 0; 5012} 5013 5014 5015static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 5016{ 5017 struct wpa_supplicant *iface; 5018 5019 if (!uplink->global->cross_connection) 5020 return; 5021 5022 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5023 if (!iface->cross_connect_enabled) 5024 continue; 5025 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5026 0) 5027 continue; 5028 if (iface->ap_iface == NULL) 5029 continue; 5030 if (iface->cross_connect_in_use) 5031 continue; 5032 5033 iface->cross_connect_in_use = 1; 5034 wpa_msg(iface->parent, MSG_INFO, 5035 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5036 iface->ifname, iface->cross_connect_uplink); 5037 } 5038} 5039 5040 5041static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 5042{ 5043 struct wpa_supplicant *iface; 5044 5045 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 5046 if (!iface->cross_connect_enabled) 5047 continue; 5048 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 5049 0) 5050 continue; 5051 if (!iface->cross_connect_in_use) 5052 continue; 5053 5054 wpa_msg(iface->parent, MSG_INFO, 5055 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 5056 iface->ifname, iface->cross_connect_uplink); 5057 iface->cross_connect_in_use = 0; 5058 } 5059} 5060 5061 5062void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 5063{ 5064 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 5065 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 5066 wpa_s->cross_connect_disallowed) 5067 wpas_p2p_disable_cross_connect(wpa_s); 5068 else 5069 wpas_p2p_enable_cross_connect(wpa_s); 5070 if (!wpa_s->ap_iface && 5071 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 5072 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 5073} 5074 5075 5076void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 5077{ 5078 wpas_p2p_disable_cross_connect(wpa_s); 5079 if (!wpa_s->ap_iface && 5080 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 5081 wpa_s, NULL)) 5082 wpas_p2p_set_group_idle_timeout(wpa_s); 5083} 5084 5085 5086static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 5087{ 5088 struct wpa_supplicant *iface; 5089 5090 if (!wpa_s->global->cross_connection) 5091 return; 5092 5093 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 5094 if (iface == wpa_s) 5095 continue; 5096 if (iface->drv_flags & 5097 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 5098 continue; 5099 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 5100 continue; 5101 5102 wpa_s->cross_connect_enabled = 1; 5103 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 5104 sizeof(wpa_s->cross_connect_uplink)); 5105 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 5106 "%s to %s whenever uplink is available", 5107 wpa_s->ifname, wpa_s->cross_connect_uplink); 5108 5109 if (iface->ap_iface || iface->current_ssid == NULL || 5110 iface->current_ssid->mode != WPAS_MODE_INFRA || 5111 iface->cross_connect_disallowed || 5112 iface->wpa_state != WPA_COMPLETED) 5113 break; 5114 5115 wpa_s->cross_connect_in_use = 1; 5116 wpa_msg(wpa_s->parent, MSG_INFO, 5117 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 5118 wpa_s->ifname, wpa_s->cross_connect_uplink); 5119 break; 5120 } 5121} 5122 5123 5124int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 5125{ 5126 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 5127 !wpa_s->p2p_in_provisioning) 5128 return 0; /* not P2P client operation */ 5129 5130 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 5131 "session overlap"); 5132 if (wpa_s != wpa_s->parent) 5133 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 5134 5135 if (wpa_s->global->p2p) 5136 p2p_group_formation_failed(wpa_s->global->p2p); 5137 5138 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5139 wpa_s->parent, NULL); 5140 5141 wpas_group_formation_completed(wpa_s, 0); 5142 return 1; 5143} 5144 5145 5146void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 5147{ 5148 struct p2p_channels chan; 5149 5150 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 5151 return; 5152 5153 os_memset(&chan, 0, sizeof(chan)); 5154 if (wpas_p2p_setup_channels(wpa_s, &chan)) { 5155 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 5156 "channel list"); 5157 return; 5158 } 5159 5160 p2p_update_channel_list(wpa_s->global->p2p, &chan); 5161} 5162 5163 5164int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 5165{ 5166 struct wpa_global *global = wpa_s->global; 5167 int found = 0; 5168 const u8 *peer; 5169 5170 if (global->p2p == NULL) 5171 return -1; 5172 5173 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 5174 5175 if (wpa_s->pending_interface_name[0] && 5176 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 5177 found = 1; 5178 5179 peer = p2p_get_go_neg_peer(global->p2p); 5180 if (peer) { 5181 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 5182 MACSTR, MAC2STR(peer)); 5183 p2p_unauthorize(global->p2p, peer); 5184 found = 1; 5185 } 5186 5187 wpas_p2p_stop_find(wpa_s); 5188 5189 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5190 if (wpa_s == global->p2p_group_formation && 5191 (wpa_s->p2p_in_provisioning || 5192 wpa_s->parent->pending_interface_type == 5193 WPA_IF_P2P_CLIENT)) { 5194 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 5195 "formation found - cancelling", 5196 wpa_s->ifname); 5197 found = 1; 5198 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5199 wpa_s->parent, NULL); 5200 if (wpa_s->p2p_in_provisioning) { 5201 wpas_group_formation_completed(wpa_s, 0); 5202 break; 5203 } 5204 wpas_p2p_group_delete(wpa_s, 5205 P2P_GROUP_REMOVAL_REQUESTED); 5206 break; 5207 } 5208 } 5209 5210 if (!found) { 5211 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 5212 return -1; 5213 } 5214 5215 return 0; 5216} 5217 5218 5219void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 5220{ 5221 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 5222 return; 5223 5224 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 5225 "being available anymore"); 5226 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 5227} 5228 5229 5230void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 5231 int freq_24, int freq_5, int freq_overall) 5232{ 5233 struct p2p_data *p2p = wpa_s->global->p2p; 5234 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5235 return; 5236 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 5237} 5238 5239 5240int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 5241{ 5242 u8 peer[ETH_ALEN]; 5243 struct p2p_data *p2p = wpa_s->global->p2p; 5244 5245 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 5246 return -1; 5247 5248 if (hwaddr_aton(addr, peer)) 5249 return -1; 5250 5251 return p2p_unauthorize(p2p, peer); 5252} 5253 5254 5255/** 5256 * wpas_p2p_disconnect - Disconnect from a P2P Group 5257 * @wpa_s: Pointer to wpa_supplicant data 5258 * Returns: 0 on success, -1 on failure 5259 * 5260 * This can be used to disconnect from a group in which the local end is a P2P 5261 * Client or to end a P2P Group in case the local end is the Group Owner. If a 5262 * virtual network interface was created for this group, that interface will be 5263 * removed. Otherwise, only the configured P2P group network will be removed 5264 * from the interface. 5265 */ 5266int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 5267{ 5268 5269 if (wpa_s == NULL) 5270 return -1; 5271 5272 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 5273 -1 : 0; 5274} 5275 5276 5277int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 5278{ 5279 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5280 return 0; 5281 5282 return p2p_in_progress(wpa_s->global->p2p); 5283} 5284 5285 5286void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 5287 struct wpa_ssid *ssid) 5288{ 5289 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 5290 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5291 wpa_s->parent, NULL) > 0) { 5292 /** 5293 * Remove the network by scheduling the group formation 5294 * timeout to happen immediately. The teardown code 5295 * needs to be scheduled to run asynch later so that we 5296 * don't delete data from under ourselves unexpectedly. 5297 * Calling wpas_p2p_group_formation_timeout directly 5298 * causes a series of crashes in WPS failure scenarios. 5299 */ 5300 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 5301 "P2P group network getting removed"); 5302 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 5303 wpa_s->parent, NULL); 5304 } 5305} 5306 5307 5308struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 5309 const u8 *addr, const u8 *ssid, 5310 size_t ssid_len) 5311{ 5312 struct wpa_ssid *s; 5313 size_t i; 5314 5315 for (s = wpa_s->conf->ssid; s; s = s->next) { 5316 if (s->disabled != 2) 5317 continue; 5318 if (ssid && 5319 (ssid_len != s->ssid_len || 5320 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 5321 continue; 5322 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 5323 return s; /* peer is GO in the persistent group */ 5324 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 5325 continue; 5326 for (i = 0; i < s->num_p2p_clients; i++) { 5327 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 5328 addr, ETH_ALEN) == 0) 5329 return s; /* peer is P2P client in persistent 5330 * group */ 5331 } 5332 } 5333 5334 return NULL; 5335} 5336 5337 5338void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 5339 const u8 *addr) 5340{ 5341 if (addr == NULL) 5342 return; 5343 wpas_p2p_add_persistent_group_client(wpa_s, addr); 5344} 5345 5346 5347static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 5348 int group_added) 5349{ 5350 struct wpa_supplicant *group = wpa_s; 5351 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 5352 if (wpa_s->global->p2p_group_formation) 5353 group = wpa_s->global->p2p_group_formation; 5354 wpa_s = wpa_s->parent; 5355 offchannel_send_action_done(wpa_s); 5356 if (group_added) 5357 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 5358 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 5359 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 5360 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 5361 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 5362 wpa_s->p2p_persistent_id, 5363 wpa_s->p2p_pd_before_go_neg, 5364 wpa_s->p2p_go_ht40); 5365} 5366 5367 5368int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 5369{ 5370 if (!wpa_s->p2p_fallback_to_go_neg || 5371 wpa_s->p2p_in_provisioning <= 5) 5372 return 0; 5373 5374 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 5375 return 0; /* peer operating as a GO */ 5376 5377 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 5378 "fallback to GO Negotiation"); 5379 wpas_p2p_fallback_to_go_neg(wpa_s, 1); 5380 5381 return 1; 5382} 5383 5384 5385unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 5386{ 5387 const char *rn, *rn2; 5388 struct wpa_supplicant *ifs; 5389 5390 if (wpa_s->wpa_state > WPA_SCANNING) { 5391 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 5392 "concurrent operation", 5393 P2P_CONCURRENT_SEARCH_DELAY); 5394 return P2P_CONCURRENT_SEARCH_DELAY; 5395 } 5396 5397 if (!wpa_s->driver->get_radio_name) 5398 return 0; 5399 rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv); 5400 if (rn == NULL || rn[0] == '\0') 5401 return 0; 5402 5403 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 5404 if (ifs == wpa_s || !ifs->driver->get_radio_name) 5405 continue; 5406 5407 rn2 = ifs->driver->get_radio_name(ifs->drv_priv); 5408 if (!rn2 || os_strcmp(rn, rn2) != 0) 5409 continue; 5410 if (ifs->wpa_state > WPA_SCANNING) { 5411 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 5412 "delay due to concurrent operation on " 5413 "interface %s", 5414 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname); 5415 return P2P_CONCURRENT_SEARCH_DELAY; 5416 } 5417 } 5418 5419 return 0; 5420} 5421 5422#ifdef ANDROID_P2P 5423int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq) 5424{ 5425 struct wpa_supplicant *iface = NULL; 5426 struct p2p_data *p2p = wpa_s->global->p2p; 5427 5428 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 5429 if((iface->p2p_group_interface) && (iface->current_ssid) && 5430 (iface->current_ssid->frequency != freq)) { 5431 5432 if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) { 5433 /* Try to see whether we can move the GO. If it 5434 * is not possible, remove the GO interface 5435 */ 5436 if(wpa_drv_switch_channel(iface, freq) == 0) { 5437 wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq); 5438 iface->current_ssid->frequency = freq; 5439 continue; 5440 } 5441 } 5442 5443 /* If GO cannot be moved or if the conflicting interface is a 5444 * P2P Client, remove the interface depending up on the connection 5445 * priority */ 5446 if(!wpas_is_p2p_prioritized(wpa_s)) { 5447 /* STA connection has priority over existing 5448 * P2P connection. So remove the interface */ 5449 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel" 5450 "concurrent mode frequency conflict"); 5451 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 5452 } else { 5453 /* Existing connection has the priority. Disable the newly 5454 * selected network and let the application know about it. 5455 */ 5456 return -1; 5457 } 5458 } 5459 } 5460 return 0; 5461} 5462#endif 5463