p2p_supplicant.c revision b5e8f06e18446918f6d801566e5709a8c87f1780
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#ifdef ANDROID_P2P 65static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s); 66#endif 67static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 68static struct wpa_supplicant * 69wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 70 int go); 71static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s); 72static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq); 73static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 74static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 75 const u8 *dev_addr, enum p2p_wps_method wps_method, 76 int auto_join); 77static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, 78 void *timeout_ctx); 79static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 80static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 81static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 82static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 83static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 84 int group_added); 85 86#ifdef ANDROID_P2P 87static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s) 88{ 89 struct wpa_supplicant *iface = NULL; 90 91 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 92 if(iface->scanning || iface->wpa_state == WPA_SCANNING) { 93 wpa_printf(MSG_DEBUG, "P2P: Scan in progress on %s," 94 "defer P2P SEARCH", iface->ifname); 95 return 1; 96 } 97 } 98 99 return 0; 100} 101#endif 102 103static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 104 struct wpa_scan_results *scan_res) 105{ 106 size_t i; 107 108 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 109 return; 110 111 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 112 (int) scan_res->num); 113 114 for (i = 0; i < scan_res->num; i++) { 115 struct wpa_scan_res *bss = scan_res->res[i]; 116 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 117 bss->freq, bss->level, 118 (const u8 *) (bss + 1), 119 bss->ie_len) > 0) 120 break; 121 } 122 123 p2p_scan_res_handled(wpa_s->global->p2p); 124} 125 126 127static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 128 unsigned int num_req_dev_types, 129 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 130{ 131 struct wpa_supplicant *wpa_s = ctx; 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 os_memset(¶ms, 0, sizeof(params)); 142 143 /* P2P Wildcard SSID */ 144 params.num_ssids = 1; 145 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 146 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 147 148 wpa_s->wps->dev.p2p = 1; 149 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 150 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 151 num_req_dev_types, req_dev_types); 152 if (wps_ie == NULL) 153 return -1; 154 155 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 156 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 157 if (ies == NULL) { 158 wpabuf_free(wps_ie); 159 return -1; 160 } 161 wpabuf_put_buf(ies, wps_ie); 162 wpabuf_free(wps_ie); 163 164 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 165 166 params.p2p_probe = 1; 167 params.extra_ies = wpabuf_head(ies); 168 params.extra_ies_len = wpabuf_len(ies); 169 170 switch (type) { 171 case P2P_SCAN_SOCIAL: 172 params.freqs = social_channels; 173 break; 174 case P2P_SCAN_FULL: 175 break; 176 case P2P_SCAN_SPECIFIC: 177 social_channels[0] = freq; 178 social_channels[1] = 0; 179 params.freqs = social_channels; 180 break; 181 case P2P_SCAN_SOCIAL_PLUS_ONE: 182 social_channels[3] = freq; 183 params.freqs = social_channels; 184 break; 185 } 186 187 ret = wpa_drv_scan(wpa_s, ¶ms); 188 189 wpabuf_free(ies); 190 191 if (ret) { 192 if (wpa_s->scanning || 193 wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) { 194 wpa_s->p2p_cb_on_scan_complete = 1; 195 ret = 1; 196 } 197 } else 198 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 199 200 return ret; 201} 202 203 204static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 205{ 206 switch (p2p_group_interface) { 207 case P2P_GROUP_INTERFACE_PENDING: 208 return WPA_IF_P2P_GROUP; 209 case P2P_GROUP_INTERFACE_GO: 210 return WPA_IF_P2P_GO; 211 case P2P_GROUP_INTERFACE_CLIENT: 212 return WPA_IF_P2P_CLIENT; 213 } 214 215 return WPA_IF_P2P_GROUP; 216} 217 218 219static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 220 const u8 *ssid, 221 size_t ssid_len, int *go) 222{ 223 struct wpa_ssid *s; 224 225 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 226 for (s = wpa_s->conf->ssid; s; s = s->next) { 227 if (s->disabled != 0 || !s->p2p_group || 228 s->ssid_len != ssid_len || 229 os_memcmp(ssid, s->ssid, ssid_len) != 0) 230 continue; 231 if (s->mode == WPAS_MODE_P2P_GO && 232 s != wpa_s->current_ssid) 233 continue; 234 if (go) 235 *go = s->mode == WPAS_MODE_P2P_GO; 236 return wpa_s; 237 } 238 } 239 240 return NULL; 241} 242 243 244static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, int silent) 245{ 246 struct wpa_ssid *ssid; 247 char *gtype; 248 const char *reason; 249 250 ssid = wpa_s->current_ssid; 251 if (ssid == NULL) { 252 /* 253 * The current SSID was not known, but there may still be a 254 * pending P2P group interface waiting for provisioning. 255 */ 256 ssid = wpa_s->conf->ssid; 257 while (ssid) { 258 if (ssid->p2p_group && 259 (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 260 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) 261 break; 262 ssid = ssid->next; 263 } 264 } 265 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 266 gtype = "GO"; 267 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 268 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 269 wpa_s->reassociate = 0; 270 wpa_s->disconnected = 1; 271 wpa_supplicant_deauthenticate(wpa_s, 272 WLAN_REASON_DEAUTH_LEAVING); 273 gtype = "client"; 274 } else 275 gtype = "GO"; 276 if (wpa_s->cross_connect_in_use) { 277 wpa_s->cross_connect_in_use = 0; 278 wpa_msg(wpa_s->parent, MSG_INFO, 279 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 280 wpa_s->ifname, wpa_s->cross_connect_uplink); 281 } 282 switch (wpa_s->removal_reason) { 283 case P2P_GROUP_REMOVAL_REQUESTED: 284 reason = " reason=REQUESTED"; 285 break; 286 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 287 reason = " reason=IDLE"; 288 break; 289 case P2P_GROUP_REMOVAL_UNAVAILABLE: 290 reason = " reason=UNAVAILABLE"; 291 break; 292 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 293 reason = " reason=GO_ENDING_SESSION"; 294 break; 295#ifdef ANDROID_P2P 296 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 297 reason = " reason=FREQ_CONFLICT"; 298 break; 299#endif 300 default: 301 reason = ""; 302 break; 303 } 304 if (!silent) { 305 wpa_msg(wpa_s->parent, MSG_INFO, 306 P2P_EVENT_GROUP_REMOVED "%s %s%s", 307 wpa_s->ifname, gtype, reason); 308 } 309 310 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 311 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 312 313 if (!silent && ssid) 314 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 315 316 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 317 struct wpa_global *global; 318 char *ifname; 319 enum wpa_driver_if_type type; 320 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 321 wpa_s->ifname); 322 global = wpa_s->global; 323 ifname = os_strdup(wpa_s->ifname); 324 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 325 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 326 wpa_s = global->ifaces; 327 if (wpa_s && ifname) 328 wpa_drv_if_remove(wpa_s, type, ifname); 329 os_free(ifname); 330 return; 331 } 332 333 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 334 if (ssid && (ssid->p2p_group || 335 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 336 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 337 int id = ssid->id; 338 if (ssid == wpa_s->current_ssid) { 339 wpa_sm_set_config(wpa_s->wpa, NULL); 340 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 341 wpa_s->current_ssid = NULL; 342 } 343 /* 344 * Networks objects created during any P2P activities are not 345 * exposed out as they might/will confuse certain non-P2P aware 346 * applications since these network objects won't behave like 347 * regular ones. 348 * 349 * Likewise, we don't send out network removed signals for such 350 * network objects. 351 */ 352 wpa_config_remove_network(wpa_s->conf, id); 353 wpa_supplicant_clear_status(wpa_s); 354 wpa_supplicant_cancel_sched_scan(wpa_s); 355 } else { 356 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 357 "found"); 358 } 359 if (wpa_s->ap_iface) 360 wpa_supplicant_ap_deinit(wpa_s); 361 else 362 wpa_drv_deinit_p2p_cli(wpa_s); 363} 364 365 366static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 367 u8 *go_dev_addr, 368 const u8 *ssid, size_t ssid_len) 369{ 370 struct wpa_bss *bss; 371 const u8 *bssid; 372 struct wpabuf *p2p; 373 u8 group_capab; 374 const u8 *addr; 375 376 if (wpa_s->go_params) 377 bssid = wpa_s->go_params->peer_interface_addr; 378 else 379 bssid = wpa_s->bssid; 380 381 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 382 if (bss == NULL) { 383 u8 iface_addr[ETH_ALEN]; 384 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 385 iface_addr) == 0) 386 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 387 } 388 if (bss == NULL) { 389 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 390 "group is persistent - BSS " MACSTR " not found", 391 MAC2STR(bssid)); 392 return 0; 393 } 394 395 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 396 if (p2p == NULL) { 397 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 398 "group is persistent - BSS " MACSTR 399 " did not include P2P IE", MAC2STR(bssid)); 400 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 401 (u8 *) (bss + 1), bss->ie_len); 402 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 403 ((u8 *) bss + 1) + bss->ie_len, 404 bss->beacon_ie_len); 405 return 0; 406 } 407 408 group_capab = p2p_get_group_capab(p2p); 409 addr = p2p_get_go_dev_addr(p2p); 410 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 411 "group_capab=0x%x", group_capab); 412 if (addr) { 413 os_memcpy(go_dev_addr, addr, ETH_ALEN); 414 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 415 MAC2STR(addr)); 416 } else 417 os_memset(go_dev_addr, 0, ETH_ALEN); 418 wpabuf_free(p2p); 419 420 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 421 "go_dev_addr=" MACSTR, 422 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 423 424 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 425} 426 427 428static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 429 struct wpa_ssid *ssid, 430 const u8 *go_dev_addr) 431{ 432 struct wpa_ssid *s; 433 int changed = 0; 434 435 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 436 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 437 for (s = wpa_s->conf->ssid; s; s = s->next) { 438 if (s->disabled == 2 && 439 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 440 s->ssid_len == ssid->ssid_len && 441 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 442 break; 443 } 444 445 if (s) { 446 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 447 "entry"); 448 if (ssid->passphrase && !s->passphrase) 449 changed = 1; 450 else if (ssid->passphrase && s->passphrase && 451 os_strcmp(ssid->passphrase, s->passphrase) != 0) 452 changed = 1; 453 } else { 454 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 455 "entry"); 456 changed = 1; 457 s = wpa_config_add_network(wpa_s->conf); 458 if (s == NULL) 459 return -1; 460 461 /* 462 * Instead of network_added we emit persistent_group_added 463 * notification. Also to keep the defense checks in 464 * persistent_group obj registration method, we set the 465 * relevant flags in s to designate it as a persistent group. 466 */ 467 s->p2p_group = 1; 468 s->p2p_persistent_group = 1; 469 wpas_notify_persistent_group_added(wpa_s, s); 470 wpa_config_set_network_defaults(s); 471 } 472 473 s->p2p_group = 1; 474 s->p2p_persistent_group = 1; 475 s->disabled = 2; 476 s->bssid_set = 1; 477 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 478 s->mode = ssid->mode; 479 s->auth_alg = WPA_AUTH_ALG_OPEN; 480 s->key_mgmt = WPA_KEY_MGMT_PSK; 481 s->proto = WPA_PROTO_RSN; 482 s->pairwise_cipher = WPA_CIPHER_CCMP; 483 s->export_keys = 1; 484 if (ssid->passphrase) { 485 os_free(s->passphrase); 486 s->passphrase = os_strdup(ssid->passphrase); 487 } 488 if (ssid->psk_set) { 489 s->psk_set = 1; 490 os_memcpy(s->psk, ssid->psk, 32); 491 } 492 if (s->passphrase && !s->psk_set) 493 wpa_config_update_psk(s); 494 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 495 os_free(s->ssid); 496 s->ssid = os_malloc(ssid->ssid_len); 497 } 498 if (s->ssid) { 499 s->ssid_len = ssid->ssid_len; 500 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 501 } 502 503#ifndef CONFIG_NO_CONFIG_WRITE 504 if (changed && wpa_s->conf->update_config && 505 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 506 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 507 } 508#endif /* CONFIG_NO_CONFIG_WRITE */ 509 510 return s->id; 511} 512 513 514static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 515 const u8 *addr) 516{ 517 struct wpa_ssid *ssid, *s; 518 u8 *n; 519 size_t i; 520 521 ssid = wpa_s->current_ssid; 522 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 523 !ssid->p2p_persistent_group) 524 return; 525 526 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 527 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 528 continue; 529 530 if (s->ssid_len == ssid->ssid_len && 531 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 532 break; 533 } 534 535 if (s == NULL) 536 return; 537 538 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 539 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 540 ETH_ALEN) == 0) 541 return; /* already in list */ 542 } 543 544 n = os_realloc(s->p2p_client_list, 545 (s->num_p2p_clients + 1) * ETH_ALEN); 546 if (n == NULL) 547 return; 548 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 549 s->p2p_client_list = n; 550 s->num_p2p_clients++; 551 552#ifndef CONFIG_NO_CONFIG_WRITE 553 if (wpa_s->parent->conf->update_config && 554 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 555 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 556#endif /* CONFIG_NO_CONFIG_WRITE */ 557} 558 559 560static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 561 int success) 562{ 563 struct wpa_ssid *ssid; 564 const char *ssid_txt; 565 int client; 566 int persistent; 567 u8 go_dev_addr[ETH_ALEN]; 568 int network_id = -1; 569 570 /* 571 * This callback is likely called for the main interface. Update wpa_s 572 * to use the group interface if a new interface was created for the 573 * group. 574 */ 575 if (wpa_s->global->p2p_group_formation) 576 wpa_s = wpa_s->global->p2p_group_formation; 577 wpa_s->global->p2p_group_formation = NULL; 578 wpa_s->p2p_in_provisioning = 0; 579 580 if (!success) { 581 wpa_msg(wpa_s->parent, MSG_INFO, 582 P2P_EVENT_GROUP_FORMATION_FAILURE); 583 wpas_p2p_group_delete(wpa_s, 0); 584 return; 585 } 586 587 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); 588 589 ssid = wpa_s->current_ssid; 590 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 591 ssid->mode = WPAS_MODE_P2P_GO; 592 p2p_group_notif_formation_done(wpa_s->p2p_group); 593 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 594 } 595 596 persistent = 0; 597 if (ssid) { 598 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 599 client = ssid->mode == WPAS_MODE_INFRA; 600 if (ssid->mode == WPAS_MODE_P2P_GO) { 601 persistent = ssid->p2p_persistent_group; 602 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 603 ETH_ALEN); 604 } else 605 persistent = wpas_p2p_persistent_group(wpa_s, 606 go_dev_addr, 607 ssid->ssid, 608 ssid->ssid_len); 609 } else { 610 ssid_txt = ""; 611 client = wpa_s->p2p_group_interface == 612 P2P_GROUP_INTERFACE_CLIENT; 613 os_memset(go_dev_addr, 0, ETH_ALEN); 614 } 615 616 wpa_s->show_group_started = 0; 617 if (client) { 618 /* 619 * Indicate event only after successfully completed 4-way 620 * handshake, i.e., when the interface is ready for data 621 * packets. 622 */ 623 wpa_s->show_group_started = 1; 624 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 625 char psk[65]; 626 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 627 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 628 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR 629 "%s", 630 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 631 MAC2STR(go_dev_addr), 632 persistent ? " [PERSISTENT]" : ""); 633 wpas_p2p_cross_connect_setup(wpa_s); 634 wpas_p2p_set_group_idle_timeout(wpa_s); 635 } else { 636 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 637 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 638 "go_dev_addr=" MACSTR "%s", 639 wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, 640 ssid && ssid->passphrase ? ssid->passphrase : "", 641 MAC2STR(go_dev_addr), 642 persistent ? " [PERSISTENT]" : ""); 643 wpas_p2p_cross_connect_setup(wpa_s); 644 wpas_p2p_set_group_idle_timeout(wpa_s); 645 } 646 647 if (persistent) 648 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 649 ssid, go_dev_addr); 650 if (network_id < 0 && ssid) 651 network_id = ssid->id; 652 if (!client) 653 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 654} 655 656 657static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 658 unsigned int freq, 659 const u8 *dst, const u8 *src, 660 const u8 *bssid, 661 const u8 *data, size_t data_len, 662 enum offchannel_send_action_result 663 result) 664{ 665 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 666 667 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 668 return; 669 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 670 return; 671 672 switch (result) { 673 case OFFCHANNEL_SEND_ACTION_SUCCESS: 674 res = P2P_SEND_ACTION_SUCCESS; 675 break; 676 case OFFCHANNEL_SEND_ACTION_NO_ACK: 677 res = P2P_SEND_ACTION_NO_ACK; 678 break; 679 case OFFCHANNEL_SEND_ACTION_FAILED: 680 res = P2P_SEND_ACTION_FAILED; 681 break; 682 } 683 684 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 685 686 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 687 wpa_s->pending_pd_before_join && 688 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 689 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 690 wpa_s->pending_pd_before_join = 0; 691 if (wpa_s->p2p_fallback_to_go_neg) { 692 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 693 "during p2p_connect-auto"); 694 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 695 return; 696 } 697 698 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 699 "join-existing-group operation (no ACK for PD " 700 "Req)"); 701 wpas_p2p_join_start(wpa_s); 702 } 703} 704 705 706static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 707 const u8 *src, const u8 *bssid, const u8 *buf, 708 size_t len, unsigned int wait_time) 709{ 710 struct wpa_supplicant *wpa_s = ctx; 711 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 712 wait_time, 713 wpas_p2p_send_action_tx_status, 1); 714} 715 716 717static void wpas_send_action_done(void *ctx) 718{ 719 struct wpa_supplicant *wpa_s = ctx; 720 offchannel_send_action_done(wpa_s); 721} 722 723 724static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 725 struct p2p_go_neg_results *params) 726{ 727 if (wpa_s->go_params == NULL) { 728 wpa_s->go_params = os_malloc(sizeof(*params)); 729 if (wpa_s->go_params == NULL) 730 return -1; 731 } 732 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 733 return 0; 734} 735 736 737static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 738 struct p2p_go_neg_results *res) 739{ 740 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, 741 MAC2STR(res->peer_interface_addr)); 742 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 743 res->ssid, res->ssid_len); 744 wpa_supplicant_ap_deinit(wpa_s); 745 wpas_copy_go_neg_results(wpa_s, res); 746 if (res->wps_method == WPS_PBC) 747 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 748 else { 749 u16 dev_pw_id = DEV_PW_DEFAULT; 750 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 751 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 752 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 753 wpa_s->p2p_pin, 1, dev_pw_id); 754 } 755} 756 757 758static void p2p_go_configured(void *ctx, void *data) 759{ 760 struct wpa_supplicant *wpa_s = ctx; 761 struct p2p_go_neg_results *params = data; 762 struct wpa_ssid *ssid; 763 int network_id = -1; 764 765 ssid = wpa_s->current_ssid; 766 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 767 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 768 if (wpa_s->global->p2p_group_formation == wpa_s) 769 wpa_s->global->p2p_group_formation = NULL; 770 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 771 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 772 "go_dev_addr=" MACSTR "%s", 773 wpa_s->ifname, 774 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 775 ssid->frequency, 776 params->passphrase ? params->passphrase : "", 777 MAC2STR(wpa_s->global->p2p_dev_addr), 778 params->persistent_group ? " [PERSISTENT]" : ""); 779 780 if (params->persistent_group) 781 network_id = wpas_p2p_store_persistent_group( 782 wpa_s->parent, ssid, 783 wpa_s->global->p2p_dev_addr); 784 if (network_id < 0) 785 network_id = ssid->id; 786 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 787 wpas_p2p_cross_connect_setup(wpa_s); 788 wpas_p2p_set_group_idle_timeout(wpa_s); 789 return; 790 } 791 792 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 793 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 794 params->peer_interface_addr)) { 795 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 796 "filtering"); 797 return; 798 } 799 if (params->wps_method == WPS_PBC) 800 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 801 params->peer_device_addr); 802 else if (wpa_s->p2p_pin[0]) 803 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 804 wpa_s->p2p_pin, NULL, 0); 805 os_free(wpa_s->go_params); 806 wpa_s->go_params = NULL; 807} 808 809 810static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 811 struct p2p_go_neg_results *params, 812 int group_formation) 813{ 814 struct wpa_ssid *ssid; 815 816 if (wpas_copy_go_neg_results(wpa_s, params) < 0) 817 return; 818 819 ssid = wpa_config_add_network(wpa_s->conf); 820 if (ssid == NULL) 821 return; 822 823 wpa_s->show_group_started = 0; 824 825 wpa_config_set_network_defaults(ssid); 826 ssid->temporary = 1; 827 ssid->p2p_group = 1; 828 ssid->p2p_persistent_group = params->persistent_group; 829 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 830 WPAS_MODE_P2P_GO; 831 ssid->frequency = params->freq; 832 ssid->ssid = os_zalloc(params->ssid_len + 1); 833 if (ssid->ssid) { 834 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 835 ssid->ssid_len = params->ssid_len; 836 } 837 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 838 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 839 ssid->proto = WPA_PROTO_RSN; 840 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 841 ssid->passphrase = os_strdup(params->passphrase); 842 843 wpa_s->ap_configured_cb = p2p_go_configured; 844 wpa_s->ap_configured_cb_ctx = wpa_s; 845 wpa_s->ap_configured_cb_data = wpa_s->go_params; 846 wpa_s->connect_without_scan = ssid; 847 wpa_s->reassociate = 1; 848 wpa_s->disconnected = 0; 849 wpa_supplicant_req_scan(wpa_s, 0, 0); 850} 851 852 853static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 854 const struct wpa_supplicant *src) 855{ 856 struct wpa_config *d; 857 const struct wpa_config *s; 858 859 d = dst->conf; 860 s = src->conf; 861 862#define C(n) if (s->n) d->n = os_strdup(s->n) 863 C(device_name); 864 C(manufacturer); 865 C(model_name); 866 C(model_number); 867 C(serial_number); 868 C(config_methods); 869#undef C 870 871 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 872 os_memcpy(d->sec_device_type, s->sec_device_type, 873 sizeof(d->sec_device_type)); 874 d->num_sec_device_types = s->num_sec_device_types; 875 876 d->p2p_group_idle = s->p2p_group_idle; 877 d->p2p_intra_bss = s->p2p_intra_bss; 878 d->persistent_reconnect = s->persistent_reconnect; 879 d->max_num_sta = s->max_num_sta; 880 d->pbc_in_m1 = s->pbc_in_m1; 881} 882 883 884static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 885 enum wpa_driver_if_type type) 886{ 887 char ifname[120], force_ifname[120]; 888 889 if (wpa_s->pending_interface_name[0]) { 890 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 891 "- skip creation of a new one"); 892 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 893 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 894 "unknown?! ifname='%s'", 895 wpa_s->pending_interface_name); 896 return -1; 897 } 898 return 0; 899 } 900 901 os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, 902 wpa_s->p2p_group_idx); 903 if (os_strlen(ifname) >= IFNAMSIZ && 904 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 905 /* Try to avoid going over the IFNAMSIZ length limit */ 906 os_snprintf(ifname, sizeof(ifname), "p2p-%d", 907 wpa_s->p2p_group_idx); 908 } 909 force_ifname[0] = '\0'; 910 911 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 912 ifname); 913 wpa_s->p2p_group_idx++; 914 915 wpa_s->pending_interface_type = type; 916 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 917 wpa_s->pending_interface_addr, NULL) < 0) { 918 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 919 "interface"); 920 return -1; 921 } 922 923 if (force_ifname[0]) { 924 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 925 force_ifname); 926 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 927 sizeof(wpa_s->pending_interface_name)); 928 } else 929 os_strlcpy(wpa_s->pending_interface_name, ifname, 930 sizeof(wpa_s->pending_interface_name)); 931 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 932 MACSTR, wpa_s->pending_interface_name, 933 MAC2STR(wpa_s->pending_interface_addr)); 934 935 return 0; 936} 937 938 939static void wpas_p2p_remove_pending_group_interface( 940 struct wpa_supplicant *wpa_s) 941{ 942 if (!wpa_s->pending_interface_name[0] || 943 is_zero_ether_addr(wpa_s->pending_interface_addr)) 944 return; /* No pending virtual interface */ 945 946 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 947 wpa_s->pending_interface_name); 948 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 949 wpa_s->pending_interface_name); 950 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 951 wpa_s->pending_interface_name[0] = '\0'; 952} 953 954 955static struct wpa_supplicant * 956wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 957{ 958 struct wpa_interface iface; 959 struct wpa_supplicant *group_wpa_s; 960 961 if (!wpa_s->pending_interface_name[0]) { 962 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 963 if (!wpas_p2p_create_iface(wpa_s)) 964 return NULL; 965 /* 966 * Something has forced us to remove the pending interface; try 967 * to create a new one and hope for the best that we will get 968 * the same local address. 969 */ 970 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 971 WPA_IF_P2P_CLIENT) < 0) 972 return NULL; 973 } 974 975 os_memset(&iface, 0, sizeof(iface)); 976 iface.ifname = wpa_s->pending_interface_name; 977 iface.driver = wpa_s->driver->name; 978 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 979 iface.driver_param = wpa_s->conf->driver_param; 980 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 981 if (group_wpa_s == NULL) { 982 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 983 "wpa_supplicant interface"); 984 return NULL; 985 } 986 wpa_s->pending_interface_name[0] = '\0'; 987 group_wpa_s->parent = wpa_s; 988 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 989 P2P_GROUP_INTERFACE_CLIENT; 990 wpa_s->global->p2p_group_formation = group_wpa_s; 991 992 wpas_p2p_clone_config(group_wpa_s, wpa_s); 993 994 return group_wpa_s; 995} 996 997 998static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 999 void *timeout_ctx) 1000{ 1001 struct wpa_supplicant *wpa_s = eloop_ctx; 1002 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 1003 if (wpa_s->global->p2p) 1004 p2p_group_formation_failed(wpa_s->global->p2p); 1005 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1006 wpa_drv_p2p_group_formation_failed(wpa_s); 1007 wpas_group_formation_completed(wpa_s, 0); 1008} 1009 1010 1011void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 1012{ 1013 struct wpa_supplicant *wpa_s = ctx; 1014 1015 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1016 wpa_drv_cancel_remain_on_channel(wpa_s); 1017 wpa_s->off_channel_freq = 0; 1018 wpa_s->roc_waiting_drv_freq = 0; 1019 } 1020 1021 if (res->status) { 1022 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", 1023 res->status); 1024 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1025 wpas_p2p_remove_pending_group_interface(wpa_s); 1026 return; 1027 } 1028 1029 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); 1030 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1031 1032 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 1033 struct wpa_ssid *ssid; 1034 ssid = wpa_config_get_network(wpa_s->conf, 1035 wpa_s->p2p_persistent_id); 1036 if (ssid && ssid->disabled == 2 && 1037 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 1038 size_t len = os_strlen(ssid->passphrase); 1039 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 1040 "on requested persistent group"); 1041 os_memcpy(res->passphrase, ssid->passphrase, len); 1042 res->passphrase[len] = '\0'; 1043 } 1044 } 1045 1046 if (wpa_s->create_p2p_iface) { 1047 struct wpa_supplicant *group_wpa_s = 1048 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1049 if (group_wpa_s == NULL) { 1050 wpas_p2p_remove_pending_group_interface(wpa_s); 1051 return; 1052 } 1053 if (group_wpa_s != wpa_s) { 1054 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1055 sizeof(group_wpa_s->p2p_pin)); 1056 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1057 } 1058 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1059 wpa_s->pending_interface_name[0] = '\0'; 1060 group_wpa_s->p2p_in_provisioning = 1; 1061 1062 if (res->role_go) 1063 wpas_start_wps_go(group_wpa_s, res, 1); 1064 else 1065 wpas_start_wps_enrollee(group_wpa_s, res); 1066 } else { 1067 wpa_s->p2p_in_provisioning = 1; 1068 wpa_s->global->p2p_group_formation = wpa_s; 1069 1070 if (res->role_go) 1071 wpas_start_wps_go(wpa_s, res, 1); 1072 else 1073 wpas_start_wps_enrollee(ctx, res); 1074 } 1075 1076 wpa_s->p2p_long_listen = 0; 1077 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1078 1079 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1080 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1081 (res->peer_config_timeout % 100) * 10000, 1082 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1083} 1084 1085 1086void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1087{ 1088 struct wpa_supplicant *wpa_s = ctx; 1089 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1090 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1091 1092 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1093} 1094 1095 1096void wpas_dev_found(void *ctx, const u8 *addr, 1097 const struct p2p_peer_info *info, 1098 int new_device) 1099{ 1100#ifndef CONFIG_NO_STDOUT_DEBUG 1101 struct wpa_supplicant *wpa_s = ctx; 1102 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1103 1104 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1105 " p2p_dev_addr=" MACSTR 1106 " pri_dev_type=%s name='%s' config_methods=0x%x " 1107 "dev_capab=0x%x group_capab=0x%x", 1108 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1109 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1110 sizeof(devtype)), 1111 info->device_name, info->config_methods, 1112 info->dev_capab, info->group_capab); 1113#endif /* CONFIG_NO_STDOUT_DEBUG */ 1114 1115 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1116} 1117 1118 1119static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1120{ 1121 struct wpa_supplicant *wpa_s = ctx; 1122 1123 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1124 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1125 1126 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1127} 1128 1129 1130static int wpas_start_listen(void *ctx, unsigned int freq, 1131 unsigned int duration, 1132 const struct wpabuf *probe_resp_ie) 1133{ 1134 struct wpa_supplicant *wpa_s = ctx; 1135 1136 wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); 1137 1138 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1139 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1140 "report received Probe Request frames"); 1141 return -1; 1142 } 1143 1144 wpa_s->pending_listen_freq = freq; 1145 wpa_s->pending_listen_duration = duration; 1146 1147 if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { 1148 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1149 "to remain on channel (%u MHz) for Listen " 1150 "state", freq); 1151 wpa_s->pending_listen_freq = 0; 1152 return -1; 1153 } 1154 wpa_s->off_channel_freq = 0; 1155 wpa_s->roc_waiting_drv_freq = freq; 1156 1157 return 0; 1158} 1159 1160 1161static void wpas_stop_listen(void *ctx) 1162{ 1163 struct wpa_supplicant *wpa_s = ctx; 1164 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1165 wpa_drv_cancel_remain_on_channel(wpa_s); 1166 wpa_s->off_channel_freq = 0; 1167 wpa_s->roc_waiting_drv_freq = 0; 1168 } 1169 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1170 wpa_drv_probe_req_report(wpa_s, 0); 1171} 1172 1173 1174static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1175{ 1176 struct wpa_supplicant *wpa_s = ctx; 1177 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1178} 1179 1180 1181static struct p2p_srv_bonjour * 1182wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1183 const struct wpabuf *query) 1184{ 1185 struct p2p_srv_bonjour *bsrv; 1186 size_t len; 1187 1188 len = wpabuf_len(query); 1189 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1190 struct p2p_srv_bonjour, list) { 1191 if (len == wpabuf_len(bsrv->query) && 1192 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1193 len) == 0) 1194 return bsrv; 1195 } 1196 return NULL; 1197} 1198 1199 1200static struct p2p_srv_upnp * 1201wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 1202 const char *service) 1203{ 1204 struct p2p_srv_upnp *usrv; 1205 1206 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1207 struct p2p_srv_upnp, list) { 1208 if (version == usrv->version && 1209 os_strcmp(service, usrv->service) == 0) 1210 return usrv; 1211 } 1212 return NULL; 1213} 1214 1215 1216static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 1217 u8 srv_trans_id) 1218{ 1219 u8 *len_pos; 1220 1221 if (wpabuf_tailroom(resp) < 5) 1222 return; 1223 1224 /* Length (to be filled) */ 1225 len_pos = wpabuf_put(resp, 2); 1226 wpabuf_put_u8(resp, srv_proto); 1227 wpabuf_put_u8(resp, srv_trans_id); 1228 /* Status Code */ 1229 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 1230 /* Response Data: empty */ 1231 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1232} 1233 1234 1235static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 1236 struct wpabuf *resp, u8 srv_trans_id) 1237{ 1238 struct p2p_srv_bonjour *bsrv; 1239 u8 *len_pos; 1240 1241 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 1242 1243 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1244 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1245 return; 1246 } 1247 1248 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1249 struct p2p_srv_bonjour, list) { 1250 if (wpabuf_tailroom(resp) < 1251 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 1252 return; 1253 /* Length (to be filled) */ 1254 len_pos = wpabuf_put(resp, 2); 1255 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1256 wpabuf_put_u8(resp, srv_trans_id); 1257 /* Status Code */ 1258 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1259 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1260 wpabuf_head(bsrv->resp), 1261 wpabuf_len(bsrv->resp)); 1262 /* Response Data */ 1263 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1264 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1265 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1266 2); 1267 } 1268} 1269 1270 1271static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 1272 struct wpabuf *resp, u8 srv_trans_id, 1273 const u8 *query, size_t query_len) 1274{ 1275 struct p2p_srv_bonjour *bsrv; 1276 struct wpabuf buf; 1277 u8 *len_pos; 1278 1279 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 1280 query, query_len); 1281 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1282 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1283 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 1284 srv_trans_id); 1285 return; 1286 } 1287 1288 if (query_len == 0) { 1289 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1290 return; 1291 } 1292 1293 if (wpabuf_tailroom(resp) < 5) 1294 return; 1295 /* Length (to be filled) */ 1296 len_pos = wpabuf_put(resp, 2); 1297 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1298 wpabuf_put_u8(resp, srv_trans_id); 1299 1300 wpabuf_set(&buf, query, query_len); 1301 bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf); 1302 if (bsrv == NULL) { 1303 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 1304 "available"); 1305 1306 /* Status Code */ 1307 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1308 /* Response Data: empty */ 1309 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1310 2); 1311 return; 1312 } 1313 1314 /* Status Code */ 1315 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1316 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1317 wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp)); 1318 1319 if (wpabuf_tailroom(resp) >= 1320 wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) { 1321 /* Response Data */ 1322 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1323 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1324 } 1325 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1326} 1327 1328 1329static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 1330 struct wpabuf *resp, u8 srv_trans_id) 1331{ 1332 struct p2p_srv_upnp *usrv; 1333 u8 *len_pos; 1334 1335 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 1336 1337 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1338 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1339 return; 1340 } 1341 1342 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1343 struct p2p_srv_upnp, list) { 1344 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 1345 return; 1346 1347 /* Length (to be filled) */ 1348 len_pos = wpabuf_put(resp, 2); 1349 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1350 wpabuf_put_u8(resp, srv_trans_id); 1351 1352 /* Status Code */ 1353 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1354 /* Response Data */ 1355 wpabuf_put_u8(resp, usrv->version); 1356 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1357 usrv->service); 1358 wpabuf_put_str(resp, usrv->service); 1359 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1360 2); 1361 } 1362} 1363 1364 1365static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 1366 struct wpabuf *resp, u8 srv_trans_id, 1367 const u8 *query, size_t query_len) 1368{ 1369 struct p2p_srv_upnp *usrv; 1370 u8 *len_pos; 1371 u8 version; 1372 char *str; 1373 int count = 0; 1374 1375 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 1376 query, query_len); 1377 1378 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1379 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1380 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 1381 srv_trans_id); 1382 return; 1383 } 1384 1385 if (query_len == 0) { 1386 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1387 return; 1388 } 1389 1390 if (wpabuf_tailroom(resp) < 5) 1391 return; 1392 1393 /* Length (to be filled) */ 1394 len_pos = wpabuf_put(resp, 2); 1395 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1396 wpabuf_put_u8(resp, srv_trans_id); 1397 1398 version = query[0]; 1399 str = os_malloc(query_len); 1400 if (str == NULL) 1401 return; 1402 os_memcpy(str, query + 1, query_len - 1); 1403 str[query_len - 1] = '\0'; 1404 1405 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1406 struct p2p_srv_upnp, list) { 1407 if (version != usrv->version) 1408 continue; 1409 1410 if (os_strcmp(str, "ssdp:all") != 0 && 1411 os_strstr(usrv->service, str) == NULL) 1412 continue; 1413 1414 if (wpabuf_tailroom(resp) < 2) 1415 break; 1416 if (count == 0) { 1417 /* Status Code */ 1418 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1419 /* Response Data */ 1420 wpabuf_put_u8(resp, version); 1421 } else 1422 wpabuf_put_u8(resp, ','); 1423 1424 count++; 1425 1426 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1427 usrv->service); 1428 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 1429 break; 1430 wpabuf_put_str(resp, usrv->service); 1431 } 1432 os_free(str); 1433 1434 if (count == 0) { 1435 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 1436 "available"); 1437 /* Status Code */ 1438 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1439 /* Response Data: empty */ 1440 } 1441 1442 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1443} 1444 1445 1446void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 1447 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 1448{ 1449 struct wpa_supplicant *wpa_s = ctx; 1450 const u8 *pos = tlvs; 1451 const u8 *end = tlvs + tlvs_len; 1452 const u8 *tlv_end; 1453 u16 slen; 1454 struct wpabuf *resp; 1455 u8 srv_proto, srv_trans_id; 1456 size_t buf_len; 1457 char *buf; 1458 1459 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 1460 tlvs, tlvs_len); 1461 buf_len = 2 * tlvs_len + 1; 1462 buf = os_malloc(buf_len); 1463 if (buf) { 1464 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1465 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 1466 MACSTR " %u %u %s", 1467 freq, MAC2STR(sa), dialog_token, update_indic, 1468 buf); 1469 os_free(buf); 1470 } 1471 1472 if (wpa_s->p2p_sd_over_ctrl_iface) { 1473 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1474 update_indic, tlvs, tlvs_len); 1475 return; /* to be processed by an external program */ 1476 } 1477 1478 resp = wpabuf_alloc(10000); 1479 if (resp == NULL) 1480 return; 1481 1482 while (pos + 1 < end) { 1483 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 1484 slen = WPA_GET_LE16(pos); 1485 pos += 2; 1486 if (pos + slen > end || slen < 2) { 1487 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 1488 "length"); 1489 wpabuf_free(resp); 1490 return; 1491 } 1492 tlv_end = pos + slen; 1493 1494 srv_proto = *pos++; 1495 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1496 srv_proto); 1497 srv_trans_id = *pos++; 1498 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1499 srv_trans_id); 1500 1501 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 1502 pos, tlv_end - pos); 1503 1504 1505 if (wpa_s->force_long_sd) { 1506 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 1507 "response"); 1508 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1509 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1510 goto done; 1511 } 1512 1513 switch (srv_proto) { 1514 case P2P_SERV_ALL_SERVICES: 1515 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 1516 "for all services"); 1517 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 1518 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1519 wpa_printf(MSG_DEBUG, "P2P: No service " 1520 "discovery protocols available"); 1521 wpas_sd_add_proto_not_avail( 1522 resp, P2P_SERV_ALL_SERVICES, 1523 srv_trans_id); 1524 break; 1525 } 1526 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1527 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1528 break; 1529 case P2P_SERV_BONJOUR: 1530 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 1531 pos, tlv_end - pos); 1532 break; 1533 case P2P_SERV_UPNP: 1534 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 1535 pos, tlv_end - pos); 1536 break; 1537 default: 1538 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 1539 "protocol %u", srv_proto); 1540 wpas_sd_add_proto_not_avail(resp, srv_proto, 1541 srv_trans_id); 1542 break; 1543 } 1544 1545 pos = tlv_end; 1546 } 1547 1548done: 1549 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1550 update_indic, tlvs, tlvs_len); 1551 1552 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 1553 1554 wpabuf_free(resp); 1555} 1556 1557 1558void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 1559 const u8 *tlvs, size_t tlvs_len) 1560{ 1561 struct wpa_supplicant *wpa_s = ctx; 1562 const u8 *pos = tlvs; 1563 const u8 *end = tlvs + tlvs_len; 1564 const u8 *tlv_end; 1565 u16 slen; 1566 size_t buf_len; 1567 char *buf; 1568 1569 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 1570 tlvs, tlvs_len); 1571 if (tlvs_len > 1500) { 1572 /* TODO: better way for handling this */ 1573 wpa_msg_ctrl(wpa_s, MSG_INFO, 1574 P2P_EVENT_SERV_DISC_RESP MACSTR 1575 " %u <long response: %u bytes>", 1576 MAC2STR(sa), update_indic, 1577 (unsigned int) tlvs_len); 1578 } else { 1579 buf_len = 2 * tlvs_len + 1; 1580 buf = os_malloc(buf_len); 1581 if (buf) { 1582 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1583 wpa_msg_ctrl(wpa_s, MSG_INFO, 1584 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 1585 MAC2STR(sa), update_indic, buf); 1586 os_free(buf); 1587 } 1588 } 1589 1590 while (pos < end) { 1591 u8 srv_proto, srv_trans_id, status; 1592 1593 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 1594 slen = WPA_GET_LE16(pos); 1595 pos += 2; 1596 if (pos + slen > end || slen < 3) { 1597 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 1598 "length"); 1599 return; 1600 } 1601 tlv_end = pos + slen; 1602 1603 srv_proto = *pos++; 1604 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1605 srv_proto); 1606 srv_trans_id = *pos++; 1607 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1608 srv_trans_id); 1609 status = *pos++; 1610 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 1611 status); 1612 1613 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 1614 pos, tlv_end - pos); 1615 1616 pos = tlv_end; 1617 } 1618 1619 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 1620} 1621 1622 1623u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 1624 const struct wpabuf *tlvs) 1625{ 1626 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1627 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); 1628 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1629 return 0; 1630 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 1631} 1632 1633 1634u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 1635 u8 version, const char *query) 1636{ 1637 struct wpabuf *tlvs; 1638 u64 ret; 1639 1640 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 1641 if (tlvs == NULL) 1642 return 0; 1643 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 1644 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 1645 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 1646 wpabuf_put_u8(tlvs, version); 1647 wpabuf_put_str(tlvs, query); 1648 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 1649 wpabuf_free(tlvs); 1650 return ret; 1651} 1652 1653 1654int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 1655{ 1656 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1657 return wpa_drv_p2p_sd_cancel_request(wpa_s, req); 1658 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1659 return -1; 1660 return p2p_sd_cancel_request(wpa_s->global->p2p, 1661 (void *) (uintptr_t) req); 1662} 1663 1664 1665void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 1666 const u8 *dst, u8 dialog_token, 1667 const struct wpabuf *resp_tlvs) 1668{ 1669 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1670 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, 1671 resp_tlvs); 1672 return; 1673 } 1674 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1675 return; 1676 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 1677 resp_tlvs); 1678} 1679 1680#ifdef ANDROID_P2P 1681void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action) 1682#else 1683void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 1684#endif 1685{ 1686 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1687 wpa_drv_p2p_service_update(wpa_s); 1688 return; 1689 } 1690 if (wpa_s->global->p2p) 1691#ifdef ANDROID_P2P 1692 p2p_sd_service_update(wpa_s->global->p2p, action); 1693#else 1694 p2p_sd_service_update(wpa_s->global->p2p); 1695#endif 1696} 1697 1698 1699static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 1700{ 1701 dl_list_del(&bsrv->list); 1702 wpabuf_free(bsrv->query); 1703 wpabuf_free(bsrv->resp); 1704 os_free(bsrv); 1705} 1706 1707 1708static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 1709{ 1710 dl_list_del(&usrv->list); 1711 os_free(usrv->service); 1712 os_free(usrv); 1713} 1714 1715 1716void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 1717{ 1718 struct p2p_srv_bonjour *bsrv, *bn; 1719 struct p2p_srv_upnp *usrv, *un; 1720 1721 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 1722 struct p2p_srv_bonjour, list) 1723 wpas_p2p_srv_bonjour_free(bsrv); 1724 1725 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 1726 struct p2p_srv_upnp, list) 1727 wpas_p2p_srv_upnp_free(usrv); 1728 1729#ifdef ANDROID_P2P 1730 wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH); 1731#else 1732 wpas_p2p_sd_service_update(wpa_s); 1733#endif 1734} 1735 1736 1737int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 1738 struct wpabuf *query, struct wpabuf *resp) 1739{ 1740 struct p2p_srv_bonjour *bsrv; 1741 1742 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 1743 if (bsrv) { 1744 wpabuf_free(query); 1745 wpabuf_free(bsrv->resp); 1746 bsrv->resp = resp; 1747 return 0; 1748 } 1749 1750 bsrv = os_zalloc(sizeof(*bsrv)); 1751 if (bsrv == NULL) 1752 return -1; 1753 bsrv->query = query; 1754 bsrv->resp = resp; 1755 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 1756 1757#ifdef ANDROID_P2P 1758 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 1759#else 1760 wpas_p2p_sd_service_update(wpa_s); 1761#endif 1762 return 0; 1763} 1764 1765 1766int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 1767 const struct wpabuf *query) 1768{ 1769 struct p2p_srv_bonjour *bsrv; 1770 1771 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 1772 if (bsrv == NULL) 1773 return -1; 1774 wpas_p2p_srv_bonjour_free(bsrv); 1775#ifdef ANDROID_P2P 1776 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 1777#else 1778 wpas_p2p_sd_service_update(wpa_s); 1779#endif 1780 return 0; 1781} 1782 1783 1784int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 1785 const char *service) 1786{ 1787 struct p2p_srv_upnp *usrv; 1788 1789 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 1790 return 0; /* Already listed */ 1791 usrv = os_zalloc(sizeof(*usrv)); 1792 if (usrv == NULL) 1793 return -1; 1794 usrv->version = version; 1795 usrv->service = os_strdup(service); 1796 if (usrv->service == NULL) { 1797 os_free(usrv); 1798 return -1; 1799 } 1800 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 1801 1802#ifdef ANDROID_P2P 1803 wpas_p2p_sd_service_update(wpa_s, SRV_ADD); 1804#else 1805 wpas_p2p_sd_service_update(wpa_s); 1806#endif 1807 return 0; 1808} 1809 1810 1811int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 1812 const char *service) 1813{ 1814 struct p2p_srv_upnp *usrv; 1815 1816 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 1817 if (usrv == NULL) 1818 return -1; 1819 wpas_p2p_srv_upnp_free(usrv); 1820#ifdef ANDROID_P2P 1821 wpas_p2p_sd_service_update(wpa_s, SRV_DEL); 1822#else 1823 wpas_p2p_sd_service_update(wpa_s); 1824#endif 1825 return 0; 1826} 1827 1828 1829static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 1830 const u8 *peer, const char *params, 1831 unsigned int generated_pin) 1832{ 1833 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", 1834 MAC2STR(peer), generated_pin, params); 1835} 1836 1837 1838static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 1839 const u8 *peer, const char *params) 1840{ 1841 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", 1842 MAC2STR(peer), params); 1843} 1844 1845 1846void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 1847 const u8 *dev_addr, const u8 *pri_dev_type, 1848 const char *dev_name, u16 supp_config_methods, 1849 u8 dev_capab, u8 group_capab, const u8 *group_id, 1850 size_t group_id_len) 1851{ 1852 struct wpa_supplicant *wpa_s = ctx; 1853 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1854 char params[300]; 1855 u8 empty_dev_type[8]; 1856 unsigned int generated_pin = 0; 1857 struct wpa_supplicant *group = NULL; 1858 1859 if (group_id) { 1860 for (group = wpa_s->global->ifaces; group; group = group->next) 1861 { 1862 struct wpa_ssid *s = group->current_ssid; 1863 if (s != NULL && 1864 s->mode == WPAS_MODE_P2P_GO && 1865 group_id_len - ETH_ALEN == s->ssid_len && 1866 os_memcmp(group_id + ETH_ALEN, s->ssid, 1867 s->ssid_len) == 0) 1868 break; 1869 } 1870 } 1871 1872 if (pri_dev_type == NULL) { 1873 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 1874 pri_dev_type = empty_dev_type; 1875 } 1876 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 1877 " pri_dev_type=%s name='%s' config_methods=0x%x " 1878 "dev_capab=0x%x group_capab=0x%x%s%s", 1879 MAC2STR(dev_addr), 1880 wps_dev_type_bin2str(pri_dev_type, devtype, 1881 sizeof(devtype)), 1882 dev_name, supp_config_methods, dev_capab, group_capab, 1883 group ? " group=" : "", 1884 group ? group->ifname : ""); 1885 params[sizeof(params) - 1] = '\0'; 1886 1887 if (config_methods & WPS_CONFIG_DISPLAY) { 1888 generated_pin = wps_generate_pin(); 1889 wpas_prov_disc_local_display(wpa_s, peer, params, 1890 generated_pin); 1891 } else if (config_methods & WPS_CONFIG_KEYPAD) 1892 wpas_prov_disc_local_keypad(wpa_s, peer, params); 1893 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 1894 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR 1895 "%s", MAC2STR(peer), params); 1896 1897 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 1898 P2P_PROV_DISC_SUCCESS, 1899 config_methods, generated_pin); 1900} 1901 1902 1903void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 1904{ 1905 struct wpa_supplicant *wpa_s = ctx; 1906 unsigned int generated_pin = 0; 1907 char params[20]; 1908 1909 if (wpa_s->pending_pd_before_join && 1910 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1911 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 1912 wpa_s->pending_pd_before_join = 0; 1913 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 1914 "join-existing-group operation"); 1915 wpas_p2p_join_start(wpa_s); 1916 return; 1917 } 1918 1919 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 1920 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) 1921 os_snprintf(params, sizeof(params), " peer_go=%d", 1922 wpa_s->pending_pd_use == AUTO_PD_JOIN); 1923 else 1924 params[0] = '\0'; 1925 1926 if (config_methods & WPS_CONFIG_DISPLAY) 1927 wpas_prov_disc_local_keypad(wpa_s, peer, params); 1928 else if (config_methods & WPS_CONFIG_KEYPAD) { 1929 generated_pin = wps_generate_pin(); 1930 wpas_prov_disc_local_display(wpa_s, peer, params, 1931 generated_pin); 1932 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 1933 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR 1934 "%s", MAC2STR(peer), params); 1935 1936 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 1937 P2P_PROV_DISC_SUCCESS, 1938 config_methods, generated_pin); 1939} 1940 1941 1942static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 1943 enum p2p_prov_disc_status status) 1944{ 1945 struct wpa_supplicant *wpa_s = ctx; 1946 1947 if (wpa_s->p2p_fallback_to_go_neg) { 1948 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 1949 "failed - fall back to GO Negotiation"); 1950 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 1951 return; 1952 } 1953 1954 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 1955 " p2p_dev_addr=" MACSTR " status=%d", 1956 MAC2STR(peer), status); 1957 1958 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 1959 status, 0, 0); 1960} 1961 1962 1963static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 1964 const u8 *go_dev_addr, const u8 *ssid, 1965 size_t ssid_len, int *go, u8 *group_bssid, 1966 int *force_freq, int persistent_group) 1967{ 1968 struct wpa_supplicant *wpa_s = ctx; 1969 struct wpa_ssid *s; 1970 u8 cur_bssid[ETH_ALEN]; 1971 int res; 1972 struct wpa_supplicant *grp; 1973 1974 if (!persistent_group) { 1975 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 1976 " to join an active group", MAC2STR(sa)); 1977 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 1978 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 1979 == 0 || 1980 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 1981 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 1982 "authorized invitation"); 1983 goto accept_inv; 1984 } 1985 /* 1986 * Do not accept the invitation automatically; notify user and 1987 * request approval. 1988 */ 1989 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1990 } 1991 1992 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 1993 if (grp) { 1994 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 1995 "running persistent group"); 1996 if (*go) 1997 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 1998 goto accept_inv; 1999 } 2000 2001 if (!wpa_s->conf->persistent_reconnect) 2002 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2003 2004 for (s = wpa_s->conf->ssid; s; s = s->next) { 2005 if (s->disabled == 2 && 2006 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2007 s->ssid_len == ssid_len && 2008 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2009 break; 2010 } 2011 2012 if (!s) { 2013 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2014 " requested reinvocation of an unknown group", 2015 MAC2STR(sa)); 2016 return P2P_SC_FAIL_UNKNOWN_GROUP; 2017 } 2018 2019 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2020 *go = 1; 2021 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2022 wpa_printf(MSG_DEBUG, "P2P: The only available " 2023 "interface is already in use - reject " 2024 "invitation"); 2025 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2026 } 2027 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 2028 } else if (s->mode == WPAS_MODE_P2P_GO) { 2029 *go = 1; 2030 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 2031 { 2032 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2033 "interface address for the group"); 2034 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 2035 } 2036 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 2037 ETH_ALEN); 2038 } 2039 2040accept_inv: 2041 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && 2042 wpa_s->assoc_freq) { 2043 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2044 "the channel we are already using"); 2045 *force_freq = wpa_s->assoc_freq; 2046 } 2047 2048 res = wpa_drv_shared_freq(wpa_s); 2049 if (res > 0) { 2050 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 2051 "with the channel we are already using on a " 2052 "shared interface"); 2053 *force_freq = res; 2054 } 2055 2056 return P2P_SC_SUCCESS; 2057} 2058 2059 2060static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 2061 const u8 *ssid, size_t ssid_len, 2062 const u8 *go_dev_addr, u8 status, 2063 int op_freq) 2064{ 2065 struct wpa_supplicant *wpa_s = ctx; 2066 struct wpa_ssid *s; 2067 2068 for (s = wpa_s->conf->ssid; s; s = s->next) { 2069 if (s->disabled == 2 && 2070 s->ssid_len == ssid_len && 2071 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2072 break; 2073 } 2074 2075 if (status == P2P_SC_SUCCESS) { 2076 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2077 " was accepted; op_freq=%d MHz", 2078 MAC2STR(sa), op_freq); 2079 if (s) { 2080 wpas_p2p_group_add_persistent( 2081 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0); 2082 } else if (bssid) { 2083 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 2084 wpa_s->p2p_wps_method, 0); 2085 } 2086 return; 2087 } 2088 2089 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2090 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2091 " was rejected (status %u)", MAC2STR(sa), status); 2092 return; 2093 } 2094 2095 if (!s) { 2096 if (bssid) { 2097 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2098 "sa=" MACSTR " go_dev_addr=" MACSTR 2099 " bssid=" MACSTR " unknown-network", 2100 MAC2STR(sa), MAC2STR(go_dev_addr), 2101 MAC2STR(bssid)); 2102 } else { 2103 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2104 "sa=" MACSTR " go_dev_addr=" MACSTR 2105 " unknown-network", 2106 MAC2STR(sa), MAC2STR(go_dev_addr)); 2107 } 2108 return; 2109 } 2110 2111 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR 2112 " persistent=%d", MAC2STR(sa), s->id); 2113} 2114 2115 2116static void wpas_invitation_result(void *ctx, int status, const u8 *bssid) 2117{ 2118 struct wpa_supplicant *wpa_s = ctx; 2119 struct wpa_ssid *ssid; 2120 2121 if (bssid) { 2122 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2123 "status=%d " MACSTR, 2124 status, MAC2STR(bssid)); 2125 } else { 2126 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2127 "status=%d ", status); 2128 } 2129 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 2130 2131 if (wpa_s->pending_invite_ssid_id == -1) 2132 return; /* Invitation to active group */ 2133 2134 if (status != P2P_SC_SUCCESS) { 2135 wpas_p2p_remove_pending_group_interface(wpa_s); 2136 return; 2137 } 2138 2139 ssid = wpa_config_get_network(wpa_s->conf, 2140 wpa_s->pending_invite_ssid_id); 2141 if (ssid == NULL) { 2142 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 2143 "data matching with invitation"); 2144 return; 2145 } 2146 2147 wpas_p2p_group_add_persistent(wpa_s, ssid, 2148 ssid->mode == WPAS_MODE_P2P_GO, 0); 2149} 2150 2151 2152static int wpas_p2p_disallowed_freq(struct wpa_global *global, 2153 unsigned int freq) 2154{ 2155 unsigned int i; 2156 2157 if (global->p2p_disallow_freq == NULL) 2158 return 0; 2159 2160 for (i = 0; i < global->num_p2p_disallow_freq; i++) { 2161 if (freq >= global->p2p_disallow_freq[i].min && 2162 freq <= global->p2p_disallow_freq[i].max) 2163 return 1; 2164 } 2165 2166 return 0; 2167} 2168 2169 2170static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 2171{ 2172 reg->channel[reg->channels] = chan; 2173 reg->channels++; 2174} 2175 2176 2177static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 2178 struct p2p_channels *chan) 2179{ 2180 int i, cla = 0; 2181 2182 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 2183 "band"); 2184 2185 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 2186 chan->reg_class[cla].reg_class = 81; 2187 chan->reg_class[cla].channels = 0; 2188 for (i = 0; i < 11; i++) { 2189 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 2190 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 2191 } 2192 if (chan->reg_class[cla].channels) 2193 cla++; 2194 2195 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 2196 "band"); 2197 2198 /* Operating class 115 - 5 GHz, channels 36-48 */ 2199 chan->reg_class[cla].reg_class = 115; 2200 chan->reg_class[cla].channels = 0; 2201 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 2202 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 2203 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 2204 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 2205 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 2206 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 2207 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 2208 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 2209 if (chan->reg_class[cla].channels) 2210 cla++; 2211 2212 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 2213 "band"); 2214 2215 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 2216 chan->reg_class[cla].reg_class = 124; 2217 chan->reg_class[cla].channels = 0; 2218 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 2219 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 2220 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 2221 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 2222 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 2223 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 2224 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 2225 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 2226 if (chan->reg_class[cla].channels) 2227 cla++; 2228 2229 chan->reg_classes = cla; 2230 return 0; 2231} 2232 2233 2234static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 2235 u16 num_modes, 2236 enum hostapd_hw_mode mode) 2237{ 2238 u16 i; 2239 2240 for (i = 0; i < num_modes; i++) { 2241 if (modes[i].mode == mode) 2242 return &modes[i]; 2243 } 2244 2245 return NULL; 2246} 2247 2248 2249static int has_channel(struct wpa_global *global, 2250 struct hostapd_hw_modes *mode, u8 chan, int *flags) 2251{ 2252 int i; 2253 unsigned int freq; 2254 2255 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 2256 chan * 5; 2257 if (wpas_p2p_disallowed_freq(global, freq)) 2258 return 0; 2259 2260 for (i = 0; i < mode->num_channels; i++) { 2261 if (mode->channels[i].chan == chan) { 2262 if (flags) 2263 *flags = mode->channels[i].flag; 2264 return !(mode->channels[i].flag & 2265 (HOSTAPD_CHAN_DISABLED | 2266 HOSTAPD_CHAN_PASSIVE_SCAN | 2267 HOSTAPD_CHAN_NO_IBSS | 2268 HOSTAPD_CHAN_RADAR)); 2269 } 2270 } 2271 2272 return 0; 2273} 2274 2275 2276struct p2p_oper_class_map { 2277 enum hostapd_hw_mode mode; 2278 u8 op_class; 2279 u8 min_chan; 2280 u8 max_chan; 2281 u8 inc; 2282 enum { BW20, BW40PLUS, BW40MINUS } bw; 2283}; 2284 2285static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 2286 struct p2p_channels *chan) 2287{ 2288 struct hostapd_hw_modes *mode; 2289 int cla, op; 2290 struct p2p_oper_class_map op_class[] = { 2291 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 2292 { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 }, 2293#if 0 /* Do not enable HT40 on 2 GHz for now */ 2294 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 2295 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 2296#endif 2297 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 2298 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 2299 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 2300 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 2301 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 2302 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 2303 { -1, 0, 0, 0, 0, BW20 } 2304 }; 2305 2306 if (wpa_s->hw.modes == NULL) { 2307 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 2308 "of all supported channels; assume dualband " 2309 "support"); 2310 return wpas_p2p_default_channels(wpa_s, chan); 2311 } 2312 2313 cla = 0; 2314 2315 for (op = 0; op_class[op].op_class; op++) { 2316 struct p2p_oper_class_map *o = &op_class[op]; 2317 u8 ch; 2318 struct p2p_reg_class *reg = NULL; 2319 2320 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 2321 if (mode == NULL) 2322 continue; 2323 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2324 int flag; 2325 if (!has_channel(wpa_s->global, mode, ch, &flag)) 2326 continue; 2327 if (o->bw == BW40MINUS && 2328 (!(flag & HOSTAPD_CHAN_HT40MINUS) || 2329 !has_channel(wpa_s->global, mode, ch - 4, NULL))) 2330 continue; 2331 if (o->bw == BW40PLUS && 2332 (!(flag & HOSTAPD_CHAN_HT40PLUS) || 2333 !has_channel(wpa_s->global, mode, ch + 4, NULL))) 2334 continue; 2335 if (reg == NULL) { 2336 wpa_printf(MSG_DEBUG, "P2P: Add operating " 2337 "class %u", o->op_class); 2338 reg = &chan->reg_class[cla]; 2339 cla++; 2340 reg->reg_class = o->op_class; 2341 } 2342 reg->channel[reg->channels] = ch; 2343 reg->channels++; 2344 } 2345 if (reg) { 2346 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 2347 reg->channel, reg->channels); 2348 } 2349 } 2350 2351 chan->reg_classes = cla; 2352 2353 return 0; 2354} 2355 2356 2357static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 2358 size_t buf_len) 2359{ 2360 struct wpa_supplicant *wpa_s = ctx; 2361 2362 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2363 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 2364 break; 2365 } 2366 if (wpa_s == NULL) 2367 return -1; 2368 2369 return wpa_drv_get_noa(wpa_s, buf, buf_len); 2370} 2371 2372 2373static int wpas_go_connected(void *ctx, const u8 *dev_addr) 2374{ 2375 struct wpa_supplicant *wpa_s = ctx; 2376 2377 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2378 struct wpa_ssid *ssid = wpa_s->current_ssid; 2379 if (ssid == NULL) 2380 continue; 2381 if (ssid->mode != WPAS_MODE_INFRA) 2382 continue; 2383 if (wpa_s->wpa_state != WPA_COMPLETED && 2384 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 2385 continue; 2386 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 2387 return 1; 2388 } 2389 2390 return 0; 2391} 2392 2393 2394/** 2395 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 2396 * @global: Pointer to global data from wpa_supplicant_init() 2397 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2398 * Returns: 0 on success, -1 on failure 2399 */ 2400int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 2401{ 2402 struct p2p_config p2p; 2403 unsigned int r; 2404 int i; 2405 2406 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 2407 return 0; 2408 2409 if (global->p2p) 2410 return 0; 2411 2412 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2413 struct p2p_params params; 2414 2415 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); 2416 os_memset(¶ms, 0, sizeof(params)); 2417 params.dev_name = wpa_s->conf->device_name; 2418 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, 2419 WPS_DEV_TYPE_LEN); 2420 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2421 os_memcpy(params.sec_dev_type, 2422 wpa_s->conf->sec_device_type, 2423 params.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2424 2425 if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) 2426 return -1; 2427 2428 return 0; 2429 } 2430 2431 os_memset(&p2p, 0, sizeof(p2p)); 2432 p2p.msg_ctx = wpa_s; 2433 p2p.cb_ctx = wpa_s; 2434 p2p.p2p_scan = wpas_p2p_scan; 2435 p2p.send_action = wpas_send_action; 2436 p2p.send_action_done = wpas_send_action_done; 2437 p2p.go_neg_completed = wpas_go_neg_completed; 2438 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 2439 p2p.dev_found = wpas_dev_found; 2440 p2p.dev_lost = wpas_dev_lost; 2441 p2p.start_listen = wpas_start_listen; 2442 p2p.stop_listen = wpas_stop_listen; 2443 p2p.send_probe_resp = wpas_send_probe_resp; 2444 p2p.sd_request = wpas_sd_request; 2445 p2p.sd_response = wpas_sd_response; 2446 p2p.prov_disc_req = wpas_prov_disc_req; 2447 p2p.prov_disc_resp = wpas_prov_disc_resp; 2448 p2p.prov_disc_fail = wpas_prov_disc_fail; 2449 p2p.invitation_process = wpas_invitation_process; 2450 p2p.invitation_received = wpas_invitation_received; 2451 p2p.invitation_result = wpas_invitation_result; 2452 p2p.get_noa = wpas_get_noa; 2453 p2p.go_connected = wpas_go_connected; 2454 2455 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 2456 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 2457 p2p.dev_name = wpa_s->conf->device_name; 2458 p2p.manufacturer = wpa_s->conf->manufacturer; 2459 p2p.model_name = wpa_s->conf->model_name; 2460 p2p.model_number = wpa_s->conf->model_number; 2461 p2p.serial_number = wpa_s->conf->serial_number; 2462 if (wpa_s->wps) { 2463 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 2464 p2p.config_methods = wpa_s->wps->config_methods; 2465 } 2466 2467 if (wpa_s->conf->p2p_listen_reg_class && 2468 wpa_s->conf->p2p_listen_channel) { 2469 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 2470 p2p.channel = wpa_s->conf->p2p_listen_channel; 2471 } else { 2472 p2p.reg_class = 81; 2473 /* 2474 * Pick one of the social channels randomly as the listen 2475 * channel. 2476 */ 2477 os_get_random((u8 *) &r, sizeof(r)); 2478 p2p.channel = 1 + (r % 3) * 5; 2479 } 2480 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 2481 2482 if (wpa_s->conf->p2p_oper_reg_class && 2483 wpa_s->conf->p2p_oper_channel) { 2484 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 2485 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 2486 p2p.cfg_op_channel = 1; 2487 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 2488 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2489 2490 } else { 2491 p2p.op_reg_class = 81; 2492 /* 2493 * Use random operation channel from (1, 6, 11) if no other 2494 * preference is indicated. 2495 */ 2496 os_get_random((u8 *) &r, sizeof(r)); 2497 p2p.op_channel = 1 + (r % 3) * 5; 2498 p2p.cfg_op_channel = 0; 2499 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 2500 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2501 } 2502 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 2503 os_memcpy(p2p.country, wpa_s->conf->country, 2); 2504 p2p.country[2] = 0x04; 2505 } else 2506 os_memcpy(p2p.country, "XX\x04", 3); 2507 2508 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { 2509 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 2510 "channel list"); 2511 return -1; 2512 } 2513 2514 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 2515 WPS_DEV_TYPE_LEN); 2516 2517 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2518 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 2519 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2520 2521 p2p.concurrent_operations = !!(wpa_s->drv_flags & 2522 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 2523 2524 p2p.max_peers = 100; 2525 2526 if (wpa_s->conf->p2p_ssid_postfix) { 2527 p2p.ssid_postfix_len = 2528 os_strlen(wpa_s->conf->p2p_ssid_postfix); 2529 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 2530 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 2531 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 2532 p2p.ssid_postfix_len); 2533 } 2534 2535 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 2536 2537 global->p2p = p2p_init(&p2p); 2538 if (global->p2p == NULL) 2539 return -1; 2540 global->p2p_init_wpa_s = wpa_s; 2541 2542 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 2543 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 2544 continue; 2545 p2p_add_wps_vendor_extension( 2546 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 2547 } 2548 2549 return 0; 2550} 2551 2552 2553/** 2554 * wpas_p2p_deinit - Deinitialize per-interface P2P data 2555 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2556 * 2557 * This function deinitialize per-interface P2P data. 2558 */ 2559void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 2560{ 2561 if (wpa_s->driver && wpa_s->drv_priv) 2562 wpa_drv_probe_req_report(wpa_s, 0); 2563 2564 if (wpa_s->go_params) { 2565 /* Clear any stored provisioning info */ 2566 p2p_clear_provisioning_info( 2567 wpa_s->global->p2p, 2568 wpa_s->go_params->peer_device_addr); 2569 } 2570 2571 os_free(wpa_s->go_params); 2572 wpa_s->go_params = NULL; 2573 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2574 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2575 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 2576 wpa_s->p2p_long_listen = 0; 2577 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2578 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 2579 wpas_p2p_remove_pending_group_interface(wpa_s); 2580 2581 /* TODO: remove group interface from the driver if this wpa_s instance 2582 * is on top of a P2P group interface */ 2583} 2584 2585 2586/** 2587 * wpas_p2p_deinit_global - Deinitialize global P2P module 2588 * @global: Pointer to global data from wpa_supplicant_init() 2589 * 2590 * This function deinitializes the global (per device) P2P module. 2591 */ 2592void wpas_p2p_deinit_global(struct wpa_global *global) 2593{ 2594 struct wpa_supplicant *wpa_s, *tmp; 2595 2596 if (global->p2p == NULL) 2597 return; 2598 2599 /* Remove remaining P2P group interfaces */ 2600 wpa_s = global->ifaces; 2601 if (wpa_s) 2602 wpas_p2p_service_flush(wpa_s); 2603 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 2604 wpa_s = wpa_s->next; 2605 while (wpa_s) { 2606 tmp = global->ifaces; 2607 while (tmp && 2608 (tmp == wpa_s || 2609 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 2610 tmp = tmp->next; 2611 } 2612 if (tmp == NULL) 2613 break; 2614 /* Disconnect from the P2P group and deinit the interface */ 2615 wpas_p2p_disconnect(tmp); 2616 } 2617 2618 /* 2619 * Deinit GO data on any possibly remaining interface (if main 2620 * interface is used as GO). 2621 */ 2622 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2623 if (wpa_s->ap_iface) 2624 wpas_p2p_group_deinit(wpa_s); 2625 } 2626 2627 p2p_deinit(global->p2p); 2628 global->p2p = NULL; 2629 global->p2p_init_wpa_s = NULL; 2630} 2631 2632 2633static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 2634{ 2635 if (wpa_s->drv_flags & 2636 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 2637 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 2638 return 1; /* P2P group requires a new interface in every case 2639 */ 2640 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 2641 return 0; /* driver does not support concurrent operations */ 2642 if (wpa_s->global->ifaces->next) 2643 return 1; /* more that one interface already in use */ 2644 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2645 return 1; /* this interface is already in use */ 2646 return 0; 2647} 2648 2649 2650static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 2651 const u8 *peer_addr, 2652 enum p2p_wps_method wps_method, 2653 int go_intent, const u8 *own_interface_addr, 2654 unsigned int force_freq, int persistent_group, 2655 struct wpa_ssid *ssid) 2656{ 2657 if (persistent_group && wpa_s->conf->persistent_reconnect) 2658 persistent_group = 2; 2659 2660 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2661 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, 2662 go_intent, own_interface_addr, 2663 force_freq, persistent_group); 2664 } 2665 2666 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 2667 go_intent, own_interface_addr, force_freq, 2668 persistent_group, ssid ? ssid->ssid : NULL, 2669 ssid ? ssid->ssid_len : 0, 2670 wpa_s->p2p_pd_before_go_neg); 2671} 2672 2673 2674static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 2675 const u8 *peer_addr, 2676 enum p2p_wps_method wps_method, 2677 int go_intent, const u8 *own_interface_addr, 2678 unsigned int force_freq, int persistent_group, 2679 struct wpa_ssid *ssid) 2680{ 2681 if (persistent_group && wpa_s->conf->persistent_reconnect) 2682 persistent_group = 2; 2683 2684 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2685 return -1; 2686 2687 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 2688 go_intent, own_interface_addr, force_freq, 2689 persistent_group, ssid ? ssid->ssid : NULL, 2690 ssid ? ssid->ssid_len : 0); 2691} 2692 2693 2694static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 2695{ 2696 wpa_s->p2p_join_scan_count++; 2697 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 2698 wpa_s->p2p_join_scan_count); 2699 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 2700 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 2701 " for join operationg - stop join attempt", 2702 MAC2STR(wpa_s->pending_join_iface_addr)); 2703 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2704 if (wpa_s->p2p_auto_pd) { 2705 wpa_s->p2p_auto_pd = 0; 2706 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2707 " p2p_dev_addr=" MACSTR " status=N/A", 2708 MAC2STR(wpa_s->pending_join_dev_addr)); 2709 return; 2710 } 2711 wpa_msg(wpa_s->parent, MSG_INFO, 2712 P2P_EVENT_GROUP_FORMATION_FAILURE); 2713 } 2714} 2715 2716 2717static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx) 2718{ 2719 struct wpa_supplicant *wpa_s = eloop_ctx; 2720 if (!wpa_s->pending_pd_before_join) 2721 return; 2722 /* 2723 * Provision Discovery Response may have been lost - try to connect 2724 * anyway since we do not need any information from this PD. 2725 */ 2726 wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - " 2727 "try to connect anyway"); 2728 wpas_p2p_join_start(wpa_s); 2729} 2730 2731 2732static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 2733{ 2734 struct wpa_supplicant *iface; 2735 int shared_freq; 2736 u8 bssid[ETH_ALEN]; 2737 2738 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) 2739 return 0; 2740 2741 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 2742 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s) 2743 continue; 2744 if (iface->current_ssid == NULL || iface->assoc_freq == 0) 2745 continue; 2746 if (iface->current_ssid->mode == WPAS_MODE_AP || 2747 iface->current_ssid->mode == WPAS_MODE_P2P_GO) 2748 shared_freq = iface->current_ssid->frequency; 2749 else if (wpa_drv_get_bssid(iface, bssid) == 0) 2750 shared_freq = iface->assoc_freq; 2751 else 2752 shared_freq = 0; 2753 2754 if (shared_freq && freq != shared_freq) { 2755 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s " 2756 "connected on %d MHz - new connection on " 2757 "%d MHz", iface->ifname, shared_freq, freq); 2758 return 1; 2759 } 2760 } 2761 2762 shared_freq = wpa_drv_shared_freq(wpa_s); 2763 if (shared_freq > 0 && shared_freq != freq) { 2764 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared " 2765 "virtual interface connected on %d MHz - new " 2766 "connection on %d MHz", shared_freq, freq); 2767 return 1; 2768 } 2769 2770 return 0; 2771} 2772 2773 2774static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 2775 const u8 *peer_dev_addr) 2776{ 2777 struct wpa_bss *bss; 2778 int updated; 2779 2780 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 2781 if (bss == NULL) 2782 return -1; 2783 if (bss->last_update_idx < wpa_s->bss_update_idx) { 2784 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 2785 "last scan"); 2786 return 0; 2787 } 2788 2789 updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update); 2790 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 2791 "%ld.%06ld (%supdated in last scan)", 2792 bss->last_update.sec, bss->last_update.usec, 2793 updated ? "": "not "); 2794 2795 return updated; 2796} 2797 2798 2799static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 2800 struct wpa_scan_results *scan_res) 2801{ 2802 struct wpa_bss *bss; 2803 int freq; 2804 u8 iface_addr[ETH_ALEN]; 2805 2806 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2807 2808 if (wpa_s->global->p2p_disabled) 2809 return; 2810 2811 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 2812 scan_res ? (int) scan_res->num : -1, 2813 wpa_s->p2p_auto_join ? "auto_" : ""); 2814 2815 if (scan_res) 2816 wpas_p2p_scan_res_handler(wpa_s, scan_res); 2817 2818 if (wpa_s->p2p_auto_pd) { 2819 int join = wpas_p2p_peer_go(wpa_s, 2820 wpa_s->pending_join_dev_addr); 2821 if (join == 0 && 2822 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 2823 wpa_s->auto_pd_scan_retry++; 2824 bss = wpa_bss_get_bssid(wpa_s, 2825 wpa_s->pending_join_dev_addr); 2826 if (bss) { 2827 freq = bss->freq; 2828 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 2829 "the peer " MACSTR " at %d MHz", 2830 wpa_s->auto_pd_scan_retry, 2831 MAC2STR(wpa_s-> 2832 pending_join_dev_addr), 2833 freq); 2834 wpas_p2p_join_scan_req(wpa_s, freq); 2835 return; 2836 } 2837 } 2838 2839 if (join < 0) 2840 join = 0; 2841 2842 wpa_s->p2p_auto_pd = 0; 2843 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 2844 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 2845 MAC2STR(wpa_s->pending_join_dev_addr), join); 2846 if (p2p_prov_disc_req(wpa_s->global->p2p, 2847 wpa_s->pending_join_dev_addr, 2848 wpa_s->pending_pd_config_methods, join, 2849 0) < 0) { 2850 wpa_s->p2p_auto_pd = 0; 2851 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2852 " p2p_dev_addr=" MACSTR " status=N/A", 2853 MAC2STR(wpa_s->pending_join_dev_addr)); 2854 } 2855 return; 2856 } 2857 2858 if (wpa_s->p2p_auto_join) { 2859 int join = wpas_p2p_peer_go(wpa_s, 2860 wpa_s->pending_join_dev_addr); 2861 if (join < 0) { 2862 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 2863 "running a GO -> use GO Negotiation"); 2864 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 2865 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 2866 wpa_s->p2p_persistent_group, 0, 0, 0, 2867 wpa_s->p2p_go_intent, 2868 wpa_s->p2p_connect_freq, 2869 wpa_s->p2p_persistent_id, 2870 wpa_s->p2p_pd_before_go_neg); 2871 return; 2872 } 2873 2874 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 2875 "try to join the group", join ? "" : 2876 " in older scan"); 2877 if (!join) 2878 wpa_s->p2p_fallback_to_go_neg = 1; 2879 } 2880 2881 freq = p2p_get_oper_freq(wpa_s->global->p2p, 2882 wpa_s->pending_join_iface_addr); 2883 if (freq < 0 && 2884 p2p_get_interface_addr(wpa_s->global->p2p, 2885 wpa_s->pending_join_dev_addr, 2886 iface_addr) == 0 && 2887 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 2888 { 2889 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 2890 "address for join from " MACSTR " to " MACSTR 2891 " based on newly discovered P2P peer entry", 2892 MAC2STR(wpa_s->pending_join_iface_addr), 2893 MAC2STR(iface_addr)); 2894 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 2895 ETH_ALEN); 2896 2897 freq = p2p_get_oper_freq(wpa_s->global->p2p, 2898 wpa_s->pending_join_iface_addr); 2899 } 2900 if (freq >= 0) { 2901 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 2902 "from P2P peer table: %d MHz", freq); 2903 } 2904 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 2905 if (bss) { 2906 freq = bss->freq; 2907 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 2908 "from BSS table: %d MHz", freq); 2909 } 2910 if (freq > 0) { 2911 u16 method; 2912 2913 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 2914 wpa_msg(wpa_s->parent, MSG_INFO, 2915 P2P_EVENT_GROUP_FORMATION_FAILURE 2916 "reason=FREQ_CONFLICT"); 2917 return; 2918 } 2919 2920 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 2921 "prior to joining an existing group (GO " MACSTR 2922 " freq=%u MHz)", 2923 MAC2STR(wpa_s->pending_join_dev_addr), freq); 2924 wpa_s->pending_pd_before_join = 1; 2925 2926 switch (wpa_s->pending_join_wps_method) { 2927 case WPS_PIN_DISPLAY: 2928 method = WPS_CONFIG_KEYPAD; 2929 break; 2930 case WPS_PIN_KEYPAD: 2931 method = WPS_CONFIG_DISPLAY; 2932 break; 2933 case WPS_PBC: 2934 method = WPS_CONFIG_PUSHBUTTON; 2935 break; 2936 default: 2937 method = 0; 2938 break; 2939 } 2940 2941 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 2942 wpa_s->pending_join_dev_addr) == 2943 method)) { 2944 /* 2945 * We have already performed provision discovery for 2946 * joining the group. Proceed directly to join 2947 * operation without duplicated provision discovery. */ 2948 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 2949 "with " MACSTR " already done - proceed to " 2950 "join", 2951 MAC2STR(wpa_s->pending_join_dev_addr)); 2952 wpa_s->pending_pd_before_join = 0; 2953 goto start; 2954 } 2955 2956 if (p2p_prov_disc_req(wpa_s->global->p2p, 2957 wpa_s->pending_join_dev_addr, method, 1, 2958 freq) < 0) { 2959 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 2960 "Discovery Request before joining an " 2961 "existing group"); 2962 wpa_s->pending_pd_before_join = 0; 2963 goto start; 2964 } 2965 2966 /* 2967 * Actual join operation will be started from the Action frame 2968 * TX status callback (if no ACK is received) or when the 2969 * Provision Discovery Response is received. Use a short 2970 * timeout as a backup mechanism should the Provision Discovery 2971 * Response be lost for any reason. 2972 */ 2973 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, 2974 NULL); 2975 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout, 2976 wpa_s, NULL); 2977 return; 2978 } 2979 2980 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 2981 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2982 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 2983 wpas_p2p_check_join_scan_limit(wpa_s); 2984 return; 2985 2986start: 2987 /* Start join operation immediately */ 2988 wpas_p2p_join_start(wpa_s); 2989} 2990 2991 2992static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq) 2993{ 2994 int ret; 2995 struct wpa_driver_scan_params params; 2996 struct wpabuf *wps_ie, *ies; 2997 size_t ielen; 2998 int freqs[2] = { 0, 0 }; 2999 3000 os_memset(¶ms, 0, sizeof(params)); 3001 3002 /* P2P Wildcard SSID */ 3003 params.num_ssids = 1; 3004 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 3005 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 3006 3007 wpa_s->wps->dev.p2p = 1; 3008 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 3009 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 3010 NULL); 3011 if (wps_ie == NULL) { 3012 wpas_p2p_scan_res_join(wpa_s, NULL); 3013 return; 3014 } 3015 3016 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 3017 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 3018 if (ies == NULL) { 3019 wpabuf_free(wps_ie); 3020 wpas_p2p_scan_res_join(wpa_s, NULL); 3021 return; 3022 } 3023 wpabuf_put_buf(ies, wps_ie); 3024 wpabuf_free(wps_ie); 3025 3026 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 3027 3028 params.p2p_probe = 1; 3029 params.extra_ies = wpabuf_head(ies); 3030 params.extra_ies_len = wpabuf_len(ies); 3031 if (freq > 0) { 3032 freqs[0] = freq; 3033 params.freqs = freqs; 3034 } 3035 3036 /* 3037 * Run a scan to update BSS table and start Provision Discovery once 3038 * the new scan results become available. 3039 */ 3040 ret = wpa_drv_scan(wpa_s, ¶ms); 3041 if (!ret) 3042 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 3043 3044 wpabuf_free(ies); 3045 3046 if (ret) { 3047 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 3048 "try again later"); 3049 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3050 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 3051 wpas_p2p_check_join_scan_limit(wpa_s); 3052 } 3053} 3054 3055 3056static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 3057{ 3058 struct wpa_supplicant *wpa_s = eloop_ctx; 3059 wpas_p2p_join_scan_req(wpa_s, 0); 3060} 3061 3062 3063static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 3064 const u8 *dev_addr, enum p2p_wps_method wps_method, 3065 int auto_join) 3066{ 3067 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 3068 MACSTR " dev " MACSTR ")%s", 3069 MAC2STR(iface_addr), MAC2STR(dev_addr), 3070 auto_join ? " (auto_join)" : ""); 3071 3072 wpa_s->p2p_auto_pd = 0; 3073 wpa_s->p2p_auto_join = !!auto_join; 3074 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 3075 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 3076 wpa_s->pending_join_wps_method = wps_method; 3077 3078 /* Make sure we are not running find during connection establishment */ 3079 wpas_p2p_stop_find(wpa_s); 3080 3081 wpa_s->p2p_join_scan_count = 0; 3082 wpas_p2p_join_scan(wpa_s, NULL); 3083 return 0; 3084} 3085 3086 3087static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) 3088{ 3089 struct wpa_supplicant *group; 3090 struct p2p_go_neg_results res; 3091 struct wpa_bss *bss; 3092 3093 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 3094 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 3095 if (group == NULL) 3096 return -1; 3097 if (group != wpa_s) { 3098 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 3099 sizeof(group->p2p_pin)); 3100 group->p2p_wps_method = wpa_s->p2p_wps_method; 3101 } 3102 3103 group->p2p_in_provisioning = 1; 3104 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 3105 3106 os_memset(&res, 0, sizeof(res)); 3107 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 3108 ETH_ALEN); 3109 res.wps_method = wpa_s->pending_join_wps_method; 3110 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 3111 if (bss) { 3112 res.freq = bss->freq; 3113 res.ssid_len = bss->ssid_len; 3114 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 3115 } 3116 3117 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 3118 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 3119 "starting client"); 3120 wpa_drv_cancel_remain_on_channel(wpa_s); 3121 wpa_s->off_channel_freq = 0; 3122 wpa_s->roc_waiting_drv_freq = 0; 3123 } 3124 wpas_start_wps_enrollee(group, &res); 3125 3126 /* 3127 * Allow a longer timeout for join-a-running-group than normal 15 3128 * second group formation timeout since the GO may not have authorized 3129 * our connection yet. 3130 */ 3131 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3132 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 3133 wpa_s, NULL); 3134 3135 return 0; 3136} 3137 3138 3139/** 3140 * wpas_p2p_connect - Request P2P Group Formation to be started 3141 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3142 * @peer_addr: Address of the peer P2P Device 3143 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 3144 * @persistent_group: Whether to create a persistent group 3145 * @auto_join: Whether to select join vs. GO Negotiation automatically 3146 * @join: Whether to join an existing group (as a client) instead of starting 3147 * Group Owner negotiation; @peer_addr is BSSID in that case 3148 * @auth: Whether to only authorize the connection instead of doing that and 3149 * initiating Group Owner negotiation 3150 * @go_intent: GO Intent or -1 to use default 3151 * @freq: Frequency for the group or 0 for auto-selection 3152 * @persistent_id: Persistent group credentials to use for forcing GO 3153 * parameters or -1 to generate new values (SSID/passphrase) 3154 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 3155 * interoperability workaround when initiating group formation 3156 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 3157 * failure, -2 on failure due to channel not currently available, 3158 * -3 if forced channel is not supported 3159 */ 3160int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3161 const char *pin, enum p2p_wps_method wps_method, 3162 int persistent_group, int auto_join, int join, int auth, 3163 int go_intent, int freq, int persistent_id, int pd) 3164{ 3165 int force_freq = 0, oper_freq = 0; 3166 u8 bssid[ETH_ALEN]; 3167 int ret = 0; 3168 enum wpa_driver_if_type iftype; 3169 const u8 *if_addr; 3170 struct wpa_ssid *ssid = NULL; 3171 3172 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3173 return -1; 3174 3175 if (persistent_id >= 0) { 3176 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 3177 if (ssid == NULL || ssid->disabled != 2 || 3178 ssid->mode != WPAS_MODE_P2P_GO) 3179 return -1; 3180 } 3181 3182 if (go_intent < 0) 3183 go_intent = wpa_s->conf->p2p_go_intent; 3184 3185 if (!auth) 3186 wpa_s->p2p_long_listen = 0; 3187 3188 wpa_s->p2p_wps_method = wps_method; 3189 wpa_s->p2p_persistent_group = !!persistent_group; 3190 wpa_s->p2p_persistent_id = persistent_id; 3191 wpa_s->p2p_go_intent = go_intent; 3192 wpa_s->p2p_connect_freq = freq; 3193 wpa_s->p2p_fallback_to_go_neg = 0; 3194 wpa_s->p2p_pd_before_go_neg = !!pd; 3195 3196 if (pin) 3197 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 3198 else if (wps_method == WPS_PIN_DISPLAY) { 3199 ret = wps_generate_pin(); 3200 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 3201 ret); 3202 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 3203 wpa_s->p2p_pin); 3204 } else 3205 wpa_s->p2p_pin[0] = '\0'; 3206 3207 if (join || auto_join) { 3208 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 3209 if (auth) { 3210 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 3211 "connect a running group from " MACSTR, 3212 MAC2STR(peer_addr)); 3213 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 3214 return ret; 3215 } 3216 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 3217 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 3218 iface_addr) < 0) { 3219 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 3220 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 3221 dev_addr); 3222 } 3223 if (auto_join) { 3224 os_get_time(&wpa_s->p2p_auto_started); 3225 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 3226 "%ld.%06ld", 3227 wpa_s->p2p_auto_started.sec, 3228 wpa_s->p2p_auto_started.usec); 3229 } 3230 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 3231 auto_join) < 0) 3232 return -1; 3233 return ret; 3234 } 3235 3236 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3237 wpa_s->assoc_freq) 3238 oper_freq = wpa_s->assoc_freq; 3239 else { 3240 oper_freq = wpa_drv_shared_freq(wpa_s); 3241 if (oper_freq < 0) 3242 oper_freq = 0; 3243 } 3244 3245 if (freq > 0) { 3246 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3247 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 3248 "(%u MHz) is not supported for P2P uses", 3249 freq); 3250 return -3; 3251 } 3252 3253 if (oper_freq > 0 && freq != oper_freq && 3254 !(wpa_s->drv_flags & 3255 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3256 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3257 "on %u MHz while connected on another " 3258 "channel (%u MHz)", freq, oper_freq); 3259 return -2; 3260 } 3261 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3262 "requested channel (%u MHz)", freq); 3263 force_freq = freq; 3264 } else if (oper_freq > 0 && 3265 !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { 3266 if (!(wpa_s->drv_flags & 3267 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3268 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 3269 "while connected on non-P2P supported " 3270 "channel (%u MHz)", oper_freq); 3271 return -2; 3272 } 3273 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 3274 "(%u MHz) not available for P2P - try to use " 3275 "another channel", oper_freq); 3276 force_freq = 0; 3277 } else if (oper_freq > 0) { 3278 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 3279 "channel we are already using (%u MHz) on another " 3280 "interface", oper_freq); 3281 force_freq = oper_freq; 3282 } 3283 3284 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 3285 3286 if (wpa_s->create_p2p_iface) { 3287 /* Prepare to add a new interface for the group */ 3288 iftype = WPA_IF_P2P_GROUP; 3289 if (go_intent == 15) 3290 iftype = WPA_IF_P2P_GO; 3291 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 3292 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3293 "interface for the group"); 3294 return -1; 3295 } 3296 3297 if_addr = wpa_s->pending_interface_addr; 3298 } else 3299 if_addr = wpa_s->own_addr; 3300 3301 if (auth) { 3302 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 3303 go_intent, if_addr, 3304 force_freq, persistent_group, ssid) < 3305 0) 3306 return -1; 3307 return ret; 3308 } 3309 3310 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 3311 go_intent, if_addr, force_freq, 3312 persistent_group, ssid) < 0) { 3313 if (wpa_s->create_p2p_iface) 3314 wpas_p2p_remove_pending_group_interface(wpa_s); 3315 return -1; 3316 } 3317 return ret; 3318} 3319 3320 3321/** 3322 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 3323 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3324 * @freq: Frequency of the channel in MHz 3325 * @duration: Duration of the stay on the channel in milliseconds 3326 * 3327 * This callback is called when the driver indicates that it has started the 3328 * requested remain-on-channel duration. 3329 */ 3330void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3331 unsigned int freq, unsigned int duration) 3332{ 3333 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3334 return; 3335 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 3336 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 3337 wpa_s->pending_listen_duration); 3338 wpa_s->pending_listen_freq = 0; 3339 } 3340} 3341 3342 3343static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 3344 unsigned int timeout) 3345{ 3346 /* Limit maximum Listen state time based on driver limitation. */ 3347 if (timeout > wpa_s->max_remain_on_chan) 3348 timeout = wpa_s->max_remain_on_chan; 3349 3350 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3351 return wpa_drv_p2p_listen(wpa_s, timeout); 3352 3353 return p2p_listen(wpa_s->global->p2p, timeout); 3354} 3355 3356 3357/** 3358 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 3359 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3360 * @freq: Frequency of the channel in MHz 3361 * 3362 * This callback is called when the driver indicates that a remain-on-channel 3363 * operation has been completed, i.e., the duration on the requested channel 3364 * has timed out. 3365 */ 3366void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3367 unsigned int freq) 3368{ 3369 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 3370 "(p2p_long_listen=%d ms pending_action_tx=%p)", 3371 wpa_s->p2p_long_listen, wpa_s->pending_action_tx); 3372 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3373 return; 3374 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 3375 return; /* P2P module started a new operation */ 3376 if (wpa_s->pending_action_tx) 3377 return; 3378 if (wpa_s->p2p_long_listen > 0) 3379 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 3380 if (wpa_s->p2p_long_listen > 0) { 3381 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 3382 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 3383 } 3384} 3385 3386 3387/** 3388 * wpas_p2p_group_remove - Remove a P2P group 3389 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3390 * @ifname: Network interface name of the group interface or "*" to remove all 3391 * groups 3392 * Returns: 0 on success, -1 on failure 3393 * 3394 * This function is used to remove a P2P group. This can be used to disconnect 3395 * from a group in which the local end is a P2P Client or to end a P2P Group in 3396 * case the local end is the Group Owner. If a virtual network interface was 3397 * created for this group, that interface will be removed. Otherwise, only the 3398 * configured P2P group network will be removed from the interface. 3399 */ 3400int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 3401{ 3402 struct wpa_global *global = wpa_s->global; 3403 3404 if (os_strcmp(ifname, "*") == 0) { 3405 struct wpa_supplicant *prev; 3406 wpa_s = global->ifaces; 3407 while (wpa_s) { 3408 prev = wpa_s; 3409 wpa_s = wpa_s->next; 3410 wpas_p2p_disconnect(prev); 3411 } 3412 return 0; 3413 } 3414 3415 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3416 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3417 break; 3418 } 3419 3420 return wpas_p2p_disconnect(wpa_s); 3421} 3422 3423 3424static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 3425 struct p2p_go_neg_results *params, 3426 int freq) 3427{ 3428 u8 bssid[ETH_ALEN]; 3429 int res; 3430 3431 os_memset(params, 0, sizeof(*params)); 3432 params->role_go = 1; 3433 if (freq) { 3434 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 3435 "frequency %d MHz", freq); 3436 params->freq = freq; 3437 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 3438 wpa_s->conf->p2p_oper_channel >= 1 && 3439 wpa_s->conf->p2p_oper_channel <= 11) { 3440 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 3441 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3442 "frequency %d MHz", params->freq); 3443 } else if (wpa_s->conf->p2p_oper_reg_class == 115 || 3444 wpa_s->conf->p2p_oper_reg_class == 124) { 3445 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 3446 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3447 "frequency %d MHz", params->freq); 3448 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3449 wpa_s->best_overall_freq > 0 && 3450 p2p_supported_freq(wpa_s->global->p2p, 3451 wpa_s->best_overall_freq)) { 3452 params->freq = wpa_s->best_overall_freq; 3453 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 3454 "channel %d MHz", params->freq); 3455 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3456 wpa_s->best_24_freq > 0 && 3457 p2p_supported_freq(wpa_s->global->p2p, 3458 wpa_s->best_24_freq)) { 3459 params->freq = wpa_s->best_24_freq; 3460 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 3461 "channel %d MHz", params->freq); 3462 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3463 wpa_s->best_5_freq > 0 && 3464 p2p_supported_freq(wpa_s->global->p2p, 3465 wpa_s->best_5_freq)) { 3466 params->freq = wpa_s->best_5_freq; 3467 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 3468 "channel %d MHz", params->freq); 3469 } else { 3470 int chan; 3471 for (chan = 0; chan < 11; chan++) { 3472 params->freq = 2412 + chan * 5; 3473 if (!wpas_p2p_disallowed_freq(wpa_s->global, 3474 params->freq)) 3475 break; 3476 } 3477 if (chan == 11) { 3478 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " 3479 "allowed"); 3480 return -1; 3481 } 3482 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 3483 "known)", params->freq); 3484 } 3485 3486 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3487 wpa_s->assoc_freq && !freq) { 3488 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3489 "already using"); 3490 params->freq = wpa_s->assoc_freq; 3491 } 3492 3493 res = wpa_drv_shared_freq(wpa_s); 3494 if (res > 0 && !freq) { 3495 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3496 "already using on a shared interface"); 3497 params->freq = res; 3498 } else if (res > 0 && freq != res && 3499 !(wpa_s->drv_flags & 3500 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3501 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " 3502 "while connected on another channel (%u MHz)", 3503 freq, res); 3504 return -1; 3505 } 3506 3507 return 0; 3508} 3509 3510 3511static struct wpa_supplicant * 3512wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 3513 int go) 3514{ 3515 struct wpa_supplicant *group_wpa_s; 3516 3517 if (!wpas_p2p_create_iface(wpa_s)) 3518 return wpa_s; 3519 3520 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 3521 WPA_IF_P2P_CLIENT) < 0) 3522 return NULL; 3523 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 3524 if (group_wpa_s == NULL) { 3525 wpas_p2p_remove_pending_group_interface(wpa_s); 3526 return NULL; 3527 } 3528 3529 return group_wpa_s; 3530} 3531 3532 3533/** 3534 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 3535 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3536 * @persistent_group: Whether to create a persistent group 3537 * @freq: Frequency for the group or 0 to indicate no hardcoding 3538 * Returns: 0 on success, -1 on failure 3539 * 3540 * This function creates a new P2P group with the local end as the Group Owner, 3541 * i.e., without using Group Owner Negotiation. 3542 */ 3543int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 3544 int freq) 3545{ 3546 struct p2p_go_neg_results params; 3547 unsigned int r; 3548 3549 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3550 return -1; 3551 3552 /* Make sure we are not running find during connection establishment */ 3553 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 3554 wpas_p2p_stop_find(wpa_s); 3555 3556 if (freq == 2) { 3557 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 3558 "band"); 3559 if (wpa_s->best_24_freq > 0 && 3560 p2p_supported_freq(wpa_s->global->p2p, 3561 wpa_s->best_24_freq)) { 3562 freq = wpa_s->best_24_freq; 3563 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 3564 "channel: %d MHz", freq); 3565 } else { 3566 os_get_random((u8 *) &r, sizeof(r)); 3567 freq = 2412 + (r % 3) * 25; 3568 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 3569 "channel: %d MHz", freq); 3570 } 3571 } 3572 3573 if (freq == 5) { 3574 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 3575 "band"); 3576 if (wpa_s->best_5_freq > 0 && 3577 p2p_supported_freq(wpa_s->global->p2p, 3578 wpa_s->best_5_freq)) { 3579 freq = wpa_s->best_5_freq; 3580 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 3581 "channel: %d MHz", freq); 3582 } else { 3583 os_get_random((u8 *) &r, sizeof(r)); 3584 freq = 5180 + (r % 4) * 20; 3585 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3586 wpa_printf(MSG_DEBUG, "P2P: Could not select " 3587 "5 GHz channel for P2P group"); 3588 return -1; 3589 } 3590 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 3591 "channel: %d MHz", freq); 3592 } 3593 } 3594 3595 if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { 3596 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 3597 "(%u MHz) is not supported for P2P uses", 3598 freq); 3599 return -1; 3600 } 3601 3602 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq)) 3603 return -1; 3604 if (params.freq && 3605 !p2p_supported_freq(wpa_s->global->p2p, params.freq)) { 3606 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " 3607 "(%u MHz) is not supported for P2P uses", 3608 params.freq); 3609 return -1; 3610 } 3611 p2p_go_params(wpa_s->global->p2p, ¶ms); 3612 params.persistent_group = persistent_group; 3613 3614 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 3615 if (wpa_s == NULL) 3616 return -1; 3617 wpas_start_wps_go(wpa_s, ¶ms, 0); 3618 3619 return 0; 3620} 3621 3622 3623static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 3624 struct wpa_ssid *params, int addr_allocated) 3625{ 3626 struct wpa_ssid *ssid; 3627 3628 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 3629 if (wpa_s == NULL) 3630 return -1; 3631 3632 wpa_supplicant_ap_deinit(wpa_s); 3633 3634 ssid = wpa_config_add_network(wpa_s->conf); 3635 if (ssid == NULL) 3636 return -1; 3637 wpa_config_set_network_defaults(ssid); 3638 ssid->temporary = 1; 3639 ssid->proto = WPA_PROTO_RSN; 3640 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 3641 ssid->group_cipher = WPA_CIPHER_CCMP; 3642 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 3643 ssid->ssid = os_malloc(params->ssid_len); 3644 if (ssid->ssid == NULL) { 3645 wpa_config_remove_network(wpa_s->conf, ssid->id); 3646 return -1; 3647 } 3648 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 3649 ssid->ssid_len = params->ssid_len; 3650 ssid->p2p_group = 1; 3651 ssid->export_keys = 1; 3652 if (params->psk_set) { 3653 os_memcpy(ssid->psk, params->psk, 32); 3654 ssid->psk_set = 1; 3655 } 3656 if (params->passphrase) 3657 ssid->passphrase = os_strdup(params->passphrase); 3658 3659 wpa_supplicant_select_network(wpa_s, ssid); 3660 3661 wpa_s->show_group_started = 1; 3662 3663 return 0; 3664} 3665 3666 3667int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 3668 struct wpa_ssid *ssid, int addr_allocated, 3669 int freq) 3670{ 3671 struct p2p_go_neg_results params; 3672 int go = 0; 3673 3674 if (ssid->disabled != 2 || ssid->ssid == NULL) 3675 return -1; 3676 3677 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 3678 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 3679 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 3680 "already running"); 3681 return 0; 3682 } 3683 3684 /* Make sure we are not running find during connection establishment */ 3685 wpas_p2p_stop_find(wpa_s); 3686 3687 wpa_s->p2p_fallback_to_go_neg = 0; 3688 3689 if (ssid->mode == WPAS_MODE_INFRA) 3690 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); 3691 3692 if (ssid->mode != WPAS_MODE_P2P_GO) 3693 return -1; 3694 3695 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq)) 3696 return -1; 3697 3698 params.role_go = 1; 3699 if (ssid->passphrase == NULL || 3700 os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 3701 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent " 3702 "group"); 3703 return -1; 3704 } 3705 os_strlcpy(params.passphrase, ssid->passphrase, 3706 sizeof(params.passphrase)); 3707 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 3708 params.ssid_len = ssid->ssid_len; 3709 params.persistent_group = 1; 3710 3711 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 3712 if (wpa_s == NULL) 3713 return -1; 3714 3715 wpas_start_wps_go(wpa_s, ¶ms, 0); 3716 3717 return 0; 3718} 3719 3720 3721static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 3722 struct wpabuf *proberesp_ies) 3723{ 3724 struct wpa_supplicant *wpa_s = ctx; 3725 if (wpa_s->ap_iface) { 3726 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 3727 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 3728 wpabuf_free(beacon_ies); 3729 wpabuf_free(proberesp_ies); 3730 return; 3731 } 3732 if (beacon_ies) { 3733 wpabuf_free(hapd->p2p_beacon_ie); 3734 hapd->p2p_beacon_ie = beacon_ies; 3735 } 3736 wpabuf_free(hapd->p2p_probe_resp_ie); 3737 hapd->p2p_probe_resp_ie = proberesp_ies; 3738 } else { 3739 wpabuf_free(beacon_ies); 3740 wpabuf_free(proberesp_ies); 3741 } 3742 wpa_supplicant_ap_update_beacon(wpa_s); 3743} 3744 3745 3746static void wpas_p2p_idle_update(void *ctx, int idle) 3747{ 3748 struct wpa_supplicant *wpa_s = ctx; 3749 if (!wpa_s->ap_iface) 3750 return; 3751 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 3752 if (idle) 3753 wpas_p2p_set_group_idle_timeout(wpa_s); 3754 else 3755 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 3756} 3757 3758 3759struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 3760 struct wpa_ssid *ssid) 3761{ 3762 struct p2p_group *group; 3763 struct p2p_group_config *cfg; 3764 3765 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3766 return NULL; 3767 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3768 return NULL; 3769 3770 cfg = os_zalloc(sizeof(*cfg)); 3771 if (cfg == NULL) 3772 return NULL; 3773 3774 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 3775 cfg->persistent_group = 2; 3776 else if (ssid->p2p_persistent_group) 3777 cfg->persistent_group = 1; 3778 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 3779 if (wpa_s->max_stations && 3780 wpa_s->max_stations < wpa_s->conf->max_num_sta) 3781 cfg->max_clients = wpa_s->max_stations; 3782 else 3783 cfg->max_clients = wpa_s->conf->max_num_sta; 3784 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 3785 cfg->ssid_len = ssid->ssid_len; 3786 cfg->cb_ctx = wpa_s; 3787 cfg->ie_update = wpas_p2p_ie_update; 3788 cfg->idle_update = wpas_p2p_idle_update; 3789 3790 group = p2p_group_init(wpa_s->global->p2p, cfg); 3791 if (group == NULL) 3792 os_free(cfg); 3793 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 3794 p2p_group_notif_formation_done(group); 3795 wpa_s->p2p_group = group; 3796 return group; 3797} 3798 3799 3800void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3801 int registrar) 3802{ 3803 struct wpa_ssid *ssid = wpa_s->current_ssid; 3804 3805 if (!wpa_s->p2p_in_provisioning) { 3806 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 3807 "provisioning not in progress"); 3808 return; 3809 } 3810 3811 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 3812 u8 go_dev_addr[ETH_ALEN]; 3813 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 3814 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 3815 ssid->ssid_len); 3816 /* Clear any stored provisioning info */ 3817 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 3818 } 3819 3820 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 3821 NULL); 3822 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 3823 /* 3824 * Use a separate timeout for initial data connection to 3825 * complete to allow the group to be removed automatically if 3826 * something goes wrong in this step before the P2P group idle 3827 * timeout mechanism is taken into use. 3828 */ 3829 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 3830 wpas_p2p_group_formation_timeout, 3831 wpa_s->parent, NULL); 3832 } 3833 if (wpa_s->global->p2p) 3834 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 3835 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3836 wpa_drv_wps_success_cb(wpa_s, peer_addr); 3837 wpas_group_formation_completed(wpa_s, 1); 3838} 3839 3840 3841void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 3842 struct wps_event_fail *fail) 3843{ 3844 if (!wpa_s->p2p_in_provisioning) { 3845 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 3846 "provisioning not in progress"); 3847 return; 3848 } 3849 3850 if (wpa_s->go_params) { 3851 p2p_clear_provisioning_info( 3852 wpa_s->global->p2p, 3853 wpa_s->go_params->peer_device_addr); 3854 } 3855 3856 wpas_notify_p2p_wps_failed(wpa_s, fail); 3857} 3858 3859 3860int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3861 const char *config_method, 3862 enum wpas_p2p_prov_disc_use use) 3863{ 3864 u16 config_methods; 3865 3866 wpa_s->p2p_fallback_to_go_neg = 0; 3867 wpa_s->pending_pd_use = NORMAL_PD; 3868 if (os_strncmp(config_method, "display", 7) == 0) 3869 config_methods = WPS_CONFIG_DISPLAY; 3870 else if (os_strncmp(config_method, "keypad", 6) == 0) 3871 config_methods = WPS_CONFIG_KEYPAD; 3872 else if (os_strncmp(config_method, "pbc", 3) == 0 || 3873 os_strncmp(config_method, "pushbutton", 10) == 0) 3874 config_methods = WPS_CONFIG_PUSHBUTTON; 3875 else { 3876 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 3877 return -1; 3878 } 3879 3880 if (use == WPAS_P2P_PD_AUTO) { 3881 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 3882 wpa_s->pending_pd_config_methods = config_methods; 3883 wpa_s->p2p_auto_pd = 1; 3884 wpa_s->p2p_auto_join = 0; 3885 wpa_s->pending_pd_before_join = 0; 3886 wpa_s->auto_pd_scan_retry = 0; 3887 wpas_p2p_stop_find(wpa_s); 3888 wpa_s->p2p_join_scan_count = 0; 3889 os_get_time(&wpa_s->p2p_auto_started); 3890 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 3891 wpa_s->p2p_auto_started.sec, 3892 wpa_s->p2p_auto_started.usec); 3893 wpas_p2p_join_scan(wpa_s, NULL); 3894 return 0; 3895 } 3896 3897 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3898 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, 3899 config_methods, 3900 use == WPAS_P2P_PD_FOR_JOIN); 3901 } 3902 3903 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 3904 return -1; 3905 3906 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 3907 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 3908 0); 3909} 3910 3911 3912int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 3913 char *end) 3914{ 3915 return p2p_scan_result_text(ies, ies_len, buf, end); 3916} 3917 3918 3919static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 3920{ 3921 if (!wpa_s->pending_action_tx) 3922 return; 3923 3924 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 3925 "operation request"); 3926 wpabuf_free(wpa_s->pending_action_tx); 3927 wpa_s->pending_action_tx = NULL; 3928} 3929 3930 3931int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 3932 enum p2p_discovery_type type, 3933 unsigned int num_req_dev_types, const u8 *req_dev_types, 3934 const u8 *dev_id) 3935{ 3936 wpas_p2p_clear_pending_action_tx(wpa_s); 3937 wpa_s->p2p_long_listen = 0; 3938 3939 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3940 return wpa_drv_p2p_find(wpa_s, timeout, type); 3941 3942 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 3943 wpa_s->p2p_in_provisioning) 3944 return -1; 3945 3946 wpa_supplicant_cancel_sched_scan(wpa_s); 3947 3948 return p2p_find(wpa_s->global->p2p, timeout, type, 3949 num_req_dev_types, req_dev_types, dev_id); 3950} 3951 3952 3953void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 3954{ 3955 wpas_p2p_clear_pending_action_tx(wpa_s); 3956 wpa_s->p2p_long_listen = 0; 3957 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3958 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3959 wpa_s->p2p_cb_on_scan_complete = 0; 3960 3961 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3962 wpa_drv_p2p_stop_find(wpa_s); 3963 return; 3964 } 3965 3966 if (wpa_s->global->p2p) 3967 p2p_stop_find(wpa_s->global->p2p); 3968 3969 wpas_p2p_remove_pending_group_interface(wpa_s); 3970} 3971 3972 3973static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3974{ 3975 struct wpa_supplicant *wpa_s = eloop_ctx; 3976 wpa_s->p2p_long_listen = 0; 3977} 3978 3979 3980int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 3981{ 3982 int res; 3983 3984 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3985 return -1; 3986 3987 wpa_supplicant_cancel_sched_scan(wpa_s); 3988 wpas_p2p_clear_pending_action_tx(wpa_s); 3989 3990 if (timeout == 0) { 3991 /* 3992 * This is a request for unlimited Listen state. However, at 3993 * least for now, this is mapped to a Listen state for one 3994 * hour. 3995 */ 3996 timeout = 3600; 3997 } 3998 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3999 wpa_s->p2p_long_listen = 0; 4000 4001 /* 4002 * Stop previous find/listen operation to avoid trying to request a new 4003 * remain-on-channel operation while the driver is still running the 4004 * previous one. 4005 */ 4006 if (wpa_s->global->p2p) 4007 p2p_stop_find(wpa_s->global->p2p); 4008 4009 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 4010 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 4011 wpa_s->p2p_long_listen = timeout * 1000; 4012 eloop_register_timeout(timeout, 0, 4013 wpas_p2p_long_listen_timeout, 4014 wpa_s, NULL); 4015 } 4016 4017 return res; 4018} 4019 4020 4021int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 4022 u8 *buf, size_t len, int p2p_group) 4023{ 4024 struct wpabuf *p2p_ie; 4025 int ret; 4026 4027 if (wpa_s->global->p2p_disabled) 4028 return -1; 4029 if (wpa_s->global->p2p == NULL) 4030 return -1; 4031 if (bss == NULL) 4032 return -1; 4033 4034 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 4035 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 4036 p2p_group, p2p_ie); 4037 wpabuf_free(p2p_ie); 4038 4039 return ret; 4040} 4041 4042 4043int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 4044 const u8 *dst, const u8 *bssid, 4045 const u8 *ie, size_t ie_len, int ssi_signal) 4046{ 4047 if (wpa_s->global->p2p_disabled) 4048 return 0; 4049 if (wpa_s->global->p2p == NULL) 4050 return 0; 4051 4052 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 4053 ie, ie_len)) { 4054 case P2P_PREQ_NOT_P2P: 4055 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 4056 ssi_signal); 4057 /* fall through */ 4058 case P2P_PREQ_MALFORMED: 4059 case P2P_PREQ_NOT_LISTEN: 4060 case P2P_PREQ_NOT_PROCESSED: 4061 default: /* make gcc happy */ 4062 return 0; 4063 case P2P_PREQ_PROCESSED: 4064 return 1; 4065 } 4066} 4067 4068 4069void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 4070 const u8 *sa, const u8 *bssid, 4071 u8 category, const u8 *data, size_t len, int freq) 4072{ 4073 if (wpa_s->global->p2p_disabled) 4074 return; 4075 if (wpa_s->global->p2p == NULL) 4076 return; 4077 4078 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 4079 freq); 4080} 4081 4082 4083void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 4084{ 4085 if (wpa_s->global->p2p_disabled) 4086 return; 4087 if (wpa_s->global->p2p == NULL) 4088 return; 4089 4090 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4091} 4092 4093 4094void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 4095{ 4096 p2p_group_deinit(wpa_s->p2p_group); 4097 wpa_s->p2p_group = NULL; 4098 4099 wpa_s->ap_configured_cb = NULL; 4100 wpa_s->ap_configured_cb_ctx = NULL; 4101 wpa_s->ap_configured_cb_data = NULL; 4102 wpa_s->connect_without_scan = NULL; 4103} 4104 4105 4106int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 4107{ 4108 wpa_s->p2p_long_listen = 0; 4109 4110 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4111 return wpa_drv_p2p_reject(wpa_s, addr); 4112 4113 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4114 return -1; 4115 4116 return p2p_reject(wpa_s->global->p2p, addr); 4117} 4118 4119 4120/* Invite to reinvoke a persistent group */ 4121int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4122 struct wpa_ssid *ssid, const u8 *go_dev_addr) 4123{ 4124 enum p2p_invite_role role; 4125 u8 *bssid = NULL; 4126 4127 if (ssid->mode == WPAS_MODE_P2P_GO) { 4128 role = P2P_INVITE_ROLE_GO; 4129 if (peer_addr == NULL) { 4130 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 4131 "address in invitation command"); 4132 return -1; 4133 } 4134 if (wpas_p2p_create_iface(wpa_s)) { 4135 if (wpas_p2p_add_group_interface(wpa_s, 4136 WPA_IF_P2P_GO) < 0) { 4137 wpa_printf(MSG_ERROR, "P2P: Failed to " 4138 "allocate a new interface for the " 4139 "group"); 4140 return -1; 4141 } 4142 bssid = wpa_s->pending_interface_addr; 4143 } else 4144 bssid = wpa_s->own_addr; 4145 } else { 4146 role = P2P_INVITE_ROLE_CLIENT; 4147 peer_addr = ssid->bssid; 4148 } 4149 wpa_s->pending_invite_ssid_id = ssid->id; 4150 4151 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4152 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4153 ssid->ssid, ssid->ssid_len, 4154 go_dev_addr, 1); 4155 4156 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4157 return -1; 4158 4159 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4160 ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1); 4161} 4162 4163 4164/* Invite to join an active group */ 4165int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 4166 const u8 *peer_addr, const u8 *go_dev_addr) 4167{ 4168 struct wpa_global *global = wpa_s->global; 4169 enum p2p_invite_role role; 4170 u8 *bssid = NULL; 4171 struct wpa_ssid *ssid; 4172 int persistent; 4173 4174 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4175 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4176 break; 4177 } 4178 if (wpa_s == NULL) { 4179 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 4180 return -1; 4181 } 4182 4183 ssid = wpa_s->current_ssid; 4184 if (ssid == NULL) { 4185 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 4186 "invitation"); 4187 return -1; 4188 } 4189 4190 persistent = ssid->p2p_persistent_group && 4191 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 4192 ssid->ssid, ssid->ssid_len); 4193 4194 if (ssid->mode == WPAS_MODE_P2P_GO) { 4195 role = P2P_INVITE_ROLE_ACTIVE_GO; 4196 bssid = wpa_s->own_addr; 4197 if (go_dev_addr == NULL) 4198 go_dev_addr = wpa_s->global->p2p_dev_addr; 4199 } else { 4200 role = P2P_INVITE_ROLE_CLIENT; 4201 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 4202 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 4203 "invite to current group"); 4204 return -1; 4205 } 4206 bssid = wpa_s->bssid; 4207 if (go_dev_addr == NULL && 4208 !is_zero_ether_addr(wpa_s->go_dev_addr)) 4209 go_dev_addr = wpa_s->go_dev_addr; 4210 } 4211 wpa_s->parent->pending_invite_ssid_id = -1; 4212 4213 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4214 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 4215 ssid->ssid, ssid->ssid_len, 4216 go_dev_addr, persistent); 4217 4218 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4219 return -1; 4220 4221 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 4222 ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq, 4223 go_dev_addr, persistent); 4224} 4225 4226 4227void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 4228{ 4229 struct wpa_ssid *ssid = wpa_s->current_ssid; 4230 const char *ssid_txt; 4231 u8 go_dev_addr[ETH_ALEN]; 4232 int network_id = -1; 4233 int persistent; 4234 int freq; 4235 4236 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 4237 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4238 wpa_s->parent, NULL); 4239 } 4240 4241 if (!wpa_s->show_group_started || !ssid) 4242 return; 4243 4244 wpa_s->show_group_started = 0; 4245 4246 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 4247 os_memset(go_dev_addr, 0, ETH_ALEN); 4248 if (ssid->bssid_set) 4249 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 4250 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 4251 ssid->ssid_len); 4252 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 4253 4254 if (wpa_s->global->p2p_group_formation == wpa_s) 4255 wpa_s->global->p2p_group_formation = NULL; 4256 4257 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 4258 (int) wpa_s->assoc_freq; 4259 if (ssid->passphrase == NULL && ssid->psk_set) { 4260 char psk[65]; 4261 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 4262 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4263 "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 4264 MACSTR "%s", 4265 wpa_s->ifname, ssid_txt, freq, psk, 4266 MAC2STR(go_dev_addr), 4267 persistent ? " [PERSISTENT]" : ""); 4268 } else { 4269 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 4270 "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " 4271 "go_dev_addr=" MACSTR "%s", 4272 wpa_s->ifname, ssid_txt, freq, 4273 ssid->passphrase ? ssid->passphrase : "", 4274 MAC2STR(go_dev_addr), 4275 persistent ? " [PERSISTENT]" : ""); 4276 } 4277 4278 if (persistent) 4279 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 4280 ssid, go_dev_addr); 4281 if (network_id < 0) 4282 network_id = ssid->id; 4283 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 4284} 4285 4286 4287int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 4288 u32 interval1, u32 duration2, u32 interval2) 4289{ 4290 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4291 return -1; 4292 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4293 return -1; 4294 4295 if (wpa_s->wpa_state < WPA_ASSOCIATED || 4296 wpa_s->current_ssid == NULL || 4297 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 4298 return -1; 4299 4300 return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 4301 wpa_s->own_addr, wpa_s->assoc_freq, 4302 duration1, interval1, duration2, interval2); 4303} 4304 4305 4306int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 4307 unsigned int interval) 4308{ 4309 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4310 return -1; 4311 4312 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4313 return -1; 4314 4315 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 4316} 4317 4318 4319static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 4320{ 4321 return wpa_s->current_ssid != NULL && 4322 wpa_s->current_ssid->p2p_group && 4323 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 4324} 4325 4326 4327static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 4328{ 4329 struct wpa_supplicant *wpa_s = eloop_ctx; 4330 4331 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 4332 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 4333 "disabled"); 4334 return; 4335 } 4336 4337 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 4338 "group"); 4339 wpa_s->removal_reason = P2P_GROUP_REMOVAL_IDLE_TIMEOUT; 4340 wpas_p2p_group_delete(wpa_s, 0); 4341} 4342 4343 4344static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 4345{ 4346 int timeout; 4347 4348 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 4349 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 4350 4351 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 4352 return; 4353 4354 timeout = wpa_s->conf->p2p_group_idle; 4355 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 4356 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 4357 timeout = P2P_MAX_CLIENT_IDLE; 4358 4359 if (timeout == 0) 4360 return; 4361 4362 if (timeout < 0) { 4363 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 4364 timeout = 0; /* special client mode no-timeout */ 4365 else 4366 return; 4367 } 4368 4369 if (wpa_s->p2p_in_provisioning) { 4370 /* 4371 * Use the normal group formation timeout during the 4372 * provisioning phase to avoid terminating this process too 4373 * early due to group idle timeout. 4374 */ 4375 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4376 "during provisioning"); 4377 return; 4378 } 4379 4380 if (wpa_s->show_group_started) { 4381 /* 4382 * Use the normal group formation timeout between the end of 4383 * the provisioning phase and completion of 4-way handshake to 4384 * avoid terminating this process too early due to group idle 4385 * timeout. 4386 */ 4387 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 4388 "while waiting for initial 4-way handshake to " 4389 "complete"); 4390 return; 4391 } 4392 4393 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 4394 timeout); 4395 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 4396 wpa_s, NULL); 4397} 4398 4399 4400void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4401 u16 reason_code, const u8 *ie, size_t ie_len, 4402 int locally_generated) 4403{ 4404 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4405 return; 4406 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4407 return; 4408 4409 if (!locally_generated) 4410 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4411 ie_len); 4412 4413 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 4414 wpa_s->current_ssid && 4415 wpa_s->current_ssid->p2p_group && 4416 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 4417 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 4418 "session is ending"); 4419 wpa_s->removal_reason = P2P_GROUP_REMOVAL_GO_ENDING_SESSION; 4420 wpas_p2p_group_delete(wpa_s, 0); 4421 } 4422} 4423 4424 4425void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 4426 u16 reason_code, const u8 *ie, size_t ie_len, 4427 int locally_generated) 4428{ 4429 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4430 return; 4431 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4432 return; 4433 4434 if (!locally_generated) 4435 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 4436 ie_len); 4437} 4438 4439 4440void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 4441{ 4442 struct p2p_data *p2p = wpa_s->global->p2p; 4443 4444 if (p2p == NULL) 4445 return; 4446 4447 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4448 return; 4449 4450 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 4451 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 4452 4453 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 4454 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 4455 4456 if (wpa_s->wps && 4457 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 4458 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 4459 4460 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 4461 p2p_set_uuid(p2p, wpa_s->wps->uuid); 4462 4463 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 4464 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 4465 p2p_set_model_name(p2p, wpa_s->conf->model_name); 4466 p2p_set_model_number(p2p, wpa_s->conf->model_number); 4467 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 4468 } 4469 4470 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 4471 p2p_set_sec_dev_types(p2p, 4472 (void *) wpa_s->conf->sec_device_type, 4473 wpa_s->conf->num_sec_device_types); 4474 4475 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 4476 int i; 4477 p2p_remove_wps_vendor_extensions(p2p); 4478 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4479 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4480 continue; 4481 p2p_add_wps_vendor_extension( 4482 p2p, wpa_s->conf->wps_vendor_ext[i]); 4483 } 4484 } 4485 4486 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 4487 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4488 char country[3]; 4489 country[0] = wpa_s->conf->country[0]; 4490 country[1] = wpa_s->conf->country[1]; 4491 country[2] = 0x04; 4492 p2p_set_country(p2p, country); 4493 } 4494 4495 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 4496 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 4497 wpa_s->conf->p2p_ssid_postfix ? 4498 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 4499 0); 4500 } 4501 4502 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 4503 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 4504 4505 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 4506 u8 reg_class, channel; 4507 int ret; 4508 unsigned int r; 4509 if (wpa_s->conf->p2p_listen_reg_class && 4510 wpa_s->conf->p2p_listen_channel) { 4511 reg_class = wpa_s->conf->p2p_listen_reg_class; 4512 channel = wpa_s->conf->p2p_listen_channel; 4513 } else { 4514 reg_class = 81; 4515 /* 4516 * Pick one of the social channels randomly as the 4517 * listen channel. 4518 */ 4519 os_get_random((u8 *) &r, sizeof(r)); 4520 channel = 1 + (r % 3) * 5; 4521 } 4522 ret = p2p_set_listen_channel(p2p, reg_class, channel); 4523 if (ret) 4524 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 4525 "failed: %d", ret); 4526 } 4527 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 4528 u8 op_reg_class, op_channel, cfg_op_channel; 4529 int ret = 0; 4530 unsigned int r; 4531 if (wpa_s->conf->p2p_oper_reg_class && 4532 wpa_s->conf->p2p_oper_channel) { 4533 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4534 op_channel = wpa_s->conf->p2p_oper_channel; 4535 cfg_op_channel = 1; 4536 } else { 4537 op_reg_class = 81; 4538 /* 4539 * Use random operation channel from (1, 6, 11) 4540 *if no other preference is indicated. 4541 */ 4542 os_get_random((u8 *) &r, sizeof(r)); 4543 op_channel = 1 + (r % 3) * 5; 4544 cfg_op_channel = 0; 4545 } 4546 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 4547 cfg_op_channel); 4548 if (ret) 4549 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 4550 "failed: %d", ret); 4551 } 4552 4553 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 4554 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 4555 wpa_s->conf->p2p_pref_chan) < 0) { 4556 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 4557 "update failed"); 4558 } 4559 } 4560} 4561 4562 4563int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 4564 int duration) 4565{ 4566 if (!wpa_s->ap_iface) 4567 return -1; 4568 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 4569 duration); 4570} 4571 4572 4573int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 4574{ 4575 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4576 return -1; 4577 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4578 return -1; 4579 4580 wpa_s->global->cross_connection = enabled; 4581 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 4582 4583 if (!enabled) { 4584 struct wpa_supplicant *iface; 4585 4586 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 4587 { 4588 if (iface->cross_connect_enabled == 0) 4589 continue; 4590 4591 iface->cross_connect_enabled = 0; 4592 iface->cross_connect_in_use = 0; 4593 wpa_msg(iface->parent, MSG_INFO, 4594 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 4595 iface->ifname, iface->cross_connect_uplink); 4596 } 4597 } 4598 4599 return 0; 4600} 4601 4602 4603static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 4604{ 4605 struct wpa_supplicant *iface; 4606 4607 if (!uplink->global->cross_connection) 4608 return; 4609 4610 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 4611 if (!iface->cross_connect_enabled) 4612 continue; 4613 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 4614 0) 4615 continue; 4616 if (iface->ap_iface == NULL) 4617 continue; 4618 if (iface->cross_connect_in_use) 4619 continue; 4620 4621 iface->cross_connect_in_use = 1; 4622 wpa_msg(iface->parent, MSG_INFO, 4623 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 4624 iface->ifname, iface->cross_connect_uplink); 4625 } 4626} 4627 4628 4629static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 4630{ 4631 struct wpa_supplicant *iface; 4632 4633 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 4634 if (!iface->cross_connect_enabled) 4635 continue; 4636 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 4637 0) 4638 continue; 4639 if (!iface->cross_connect_in_use) 4640 continue; 4641 4642 wpa_msg(iface->parent, MSG_INFO, 4643 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 4644 iface->ifname, iface->cross_connect_uplink); 4645 iface->cross_connect_in_use = 0; 4646 } 4647} 4648 4649 4650void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 4651{ 4652 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 4653 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 4654 wpa_s->cross_connect_disallowed) 4655 wpas_p2p_disable_cross_connect(wpa_s); 4656 else 4657 wpas_p2p_enable_cross_connect(wpa_s); 4658 if (!wpa_s->ap_iface && 4659 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 4660 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 4661} 4662 4663 4664void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 4665{ 4666 wpas_p2p_disable_cross_connect(wpa_s); 4667 if (!wpa_s->ap_iface && 4668 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 4669 wpa_s, NULL)) 4670 wpas_p2p_set_group_idle_timeout(wpa_s); 4671} 4672 4673 4674static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 4675{ 4676 struct wpa_supplicant *iface; 4677 4678 if (!wpa_s->global->cross_connection) 4679 return; 4680 4681 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 4682 if (iface == wpa_s) 4683 continue; 4684 if (iface->drv_flags & 4685 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 4686 continue; 4687 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 4688 continue; 4689 4690 wpa_s->cross_connect_enabled = 1; 4691 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 4692 sizeof(wpa_s->cross_connect_uplink)); 4693 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 4694 "%s to %s whenever uplink is available", 4695 wpa_s->ifname, wpa_s->cross_connect_uplink); 4696 4697 if (iface->ap_iface || iface->current_ssid == NULL || 4698 iface->current_ssid->mode != WPAS_MODE_INFRA || 4699 iface->cross_connect_disallowed || 4700 iface->wpa_state != WPA_COMPLETED) 4701 break; 4702 4703 wpa_s->cross_connect_in_use = 1; 4704 wpa_msg(wpa_s->parent, MSG_INFO, 4705 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 4706 wpa_s->ifname, wpa_s->cross_connect_uplink); 4707 break; 4708 } 4709} 4710 4711 4712int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 4713{ 4714 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 4715 !wpa_s->p2p_in_provisioning) 4716 return 0; /* not P2P client operation */ 4717 4718 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 4719 "session overlap"); 4720 if (wpa_s != wpa_s->parent) 4721 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 4722 4723 if (wpa_s->global->p2p) 4724 p2p_group_formation_failed(wpa_s->global->p2p); 4725 4726 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4727 wpa_s->parent, NULL); 4728 4729 wpas_group_formation_completed(wpa_s, 0); 4730 return 1; 4731} 4732 4733 4734void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 4735{ 4736 struct p2p_channels chan; 4737 4738 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 4739 return; 4740 4741 os_memset(&chan, 0, sizeof(chan)); 4742 if (wpas_p2p_setup_channels(wpa_s, &chan)) { 4743 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 4744 "channel list"); 4745 return; 4746 } 4747 4748 p2p_update_channel_list(wpa_s->global->p2p, &chan); 4749} 4750 4751 4752int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 4753{ 4754 struct wpa_global *global = wpa_s->global; 4755 int found = 0; 4756 const u8 *peer; 4757 4758 if (global->p2p == NULL) 4759 return -1; 4760 4761 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 4762 4763 if (wpa_s->pending_interface_name[0] && 4764 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 4765 found = 1; 4766 4767 peer = p2p_get_go_neg_peer(global->p2p); 4768 if (peer) { 4769 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 4770 MACSTR, MAC2STR(peer)); 4771 p2p_unauthorize(global->p2p, peer); 4772 found = 1; 4773 } 4774 4775 wpas_p2p_stop_find(wpa_s); 4776 4777 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4778 if (wpa_s == global->p2p_group_formation && 4779 (wpa_s->p2p_in_provisioning || 4780 wpa_s->parent->pending_interface_type == 4781 WPA_IF_P2P_CLIENT)) { 4782 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 4783 "formation found - cancelling", 4784 wpa_s->ifname); 4785 found = 1; 4786 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4787 wpa_s->parent, NULL); 4788 wpas_p2p_group_delete(wpa_s, 0); 4789 break; 4790 } 4791 } 4792 4793 if (!found) { 4794 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 4795 return -1; 4796 } 4797 4798 return 0; 4799} 4800 4801 4802void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 4803{ 4804 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 4805 return; 4806 4807 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 4808 "being available anymore"); 4809 wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE; 4810 wpas_p2p_group_delete(wpa_s, 0); 4811} 4812 4813 4814void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 4815 int freq_24, int freq_5, int freq_overall) 4816{ 4817 struct p2p_data *p2p = wpa_s->global->p2p; 4818 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 4819 return; 4820 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 4821} 4822 4823 4824int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 4825{ 4826 u8 peer[ETH_ALEN]; 4827 struct p2p_data *p2p = wpa_s->global->p2p; 4828 4829 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 4830 return -1; 4831 4832 if (hwaddr_aton(addr, peer)) 4833 return -1; 4834 4835 return p2p_unauthorize(p2p, peer); 4836} 4837 4838 4839/** 4840 * wpas_p2p_disconnect - Disconnect from a P2P Group 4841 * @wpa_s: Pointer to wpa_supplicant data 4842 * Returns: 0 on success, -1 on failure 4843 * 4844 * This can be used to disconnect from a group in which the local end is a P2P 4845 * Client or to end a P2P Group in case the local end is the Group Owner. If a 4846 * virtual network interface was created for this group, that interface will be 4847 * removed. Otherwise, only the configured P2P group network will be removed 4848 * from the interface. 4849 */ 4850int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 4851{ 4852 4853 if (wpa_s == NULL) 4854 return -1; 4855 4856 wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED; 4857 wpas_p2p_group_delete(wpa_s, 0); 4858 4859 return 0; 4860} 4861 4862 4863int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 4864{ 4865 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4866 return 0; 4867 4868 return p2p_in_progress(wpa_s->global->p2p); 4869} 4870 4871 4872void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 4873 struct wpa_ssid *ssid) 4874{ 4875 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 4876 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4877 wpa_s->parent, NULL) > 0) { 4878 /** 4879 * Remove the network by scheduling the group formation 4880 * timeout to happen immediately. The teardown code 4881 * needs to be scheduled to run asynch later so that we 4882 * don't delete data from under ourselves unexpectedly. 4883 * Calling wpas_p2p_group_formation_timeout directly 4884 * causes a series of crashes in WPS failure scenarios. 4885 */ 4886 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 4887 "P2P group network getting removed"); 4888 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 4889 wpa_s->parent, NULL); 4890 } 4891} 4892 4893 4894struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 4895 const u8 *addr, const u8 *ssid, 4896 size_t ssid_len) 4897{ 4898 struct wpa_ssid *s; 4899 size_t i; 4900 4901 for (s = wpa_s->conf->ssid; s; s = s->next) { 4902 if (s->disabled != 2) 4903 continue; 4904 if (ssid && 4905 (ssid_len != s->ssid_len || 4906 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 4907 continue; 4908 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 4909 return s; /* peer is GO in the persistent group */ 4910 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 4911 continue; 4912 for (i = 0; i < s->num_p2p_clients; i++) { 4913 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 4914 addr, ETH_ALEN) == 0) 4915 return s; /* peer is P2P client in persistent 4916 * group */ 4917 } 4918 } 4919 4920 return NULL; 4921} 4922 4923 4924void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 4925 const u8 *addr) 4926{ 4927 if (addr == NULL) 4928 return; 4929 wpas_p2p_add_persistent_group_client(wpa_s, addr); 4930} 4931 4932 4933static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 4934 int group_added) 4935{ 4936 struct wpa_supplicant *group = wpa_s; 4937 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 4938 if (wpa_s->global->p2p_group_formation) 4939 group = wpa_s->global->p2p_group_formation; 4940 wpa_s = wpa_s->parent; 4941 offchannel_send_action_done(wpa_s); 4942 if (group_added) 4943 wpas_p2p_group_delete(group, 1); 4944 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 4945 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 4946 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 4947 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 4948 wpa_s->p2p_persistent_id, 4949 wpa_s->p2p_pd_before_go_neg); 4950} 4951 4952 4953int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 4954{ 4955 if (!wpa_s->p2p_fallback_to_go_neg || 4956 wpa_s->p2p_in_provisioning <= 5) 4957 return 0; 4958 4959 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 4960 return 0; /* peer operating as a GO */ 4961 4962 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 4963 "fallback to GO Negotiation"); 4964 wpas_p2p_fallback_to_go_neg(wpa_s, 1); 4965 4966 return 1; 4967} 4968 4969#ifdef ANDROID_P2P 4970int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq) 4971{ 4972 struct wpa_supplicant *iface = NULL; 4973 struct p2p_data *p2p = wpa_s->global->p2p; 4974 4975 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 4976 if((iface->p2p_group_interface) && (iface->current_ssid) && 4977 (iface->current_ssid->frequency != freq)) { 4978 4979 if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) { 4980 /* Try to see whether we can move the GO. If it 4981 * is not possible, remove the GO interface 4982 */ 4983 if(wpa_drv_switch_channel(iface, freq) == 0) { 4984 wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq); 4985 iface->current_ssid->frequency = freq; 4986 continue; 4987 } 4988 } 4989 4990 /* If GO cannot be moved or if the conflicting interface is a 4991 * P2P Client, remove the interface depending up on the connection 4992 * priority */ 4993 if(!wpas_is_p2p_prioritized(wpa_s)) { 4994 /* STA connection has priority over existing 4995 * P2P connection. So remove the interface */ 4996 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel" 4997 "concurrent mode frequency conflict"); 4998 iface->removal_reason = P2P_GROUP_REMOVAL_FREQ_CONFLICT; 4999 wpas_p2p_group_delete(iface, 0); 5000 } else { 5001 /* Existing connection has the priority. Disable the newly 5002 * selected network and let the application know about it. 5003 */ 5004 return -1; 5005 } 5006 } 5007 } 5008 return 0; 5009} 5010#endif 5011