p2p_supplicant.c revision 5a1480c7c46c4236d93bfd303dde32062bee04ac
1/* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi> 5 * 6 * This software may be distributed under the terms of the BSD license. 7 * See README for more details. 8 */ 9 10#include "includes.h" 11 12#include "common.h" 13#include "eloop.h" 14#include "common/ieee802_11_common.h" 15#include "common/ieee802_11_defs.h" 16#include "common/wpa_ctrl.h" 17#include "wps/wps_i.h" 18#include "p2p/p2p.h" 19#include "ap/hostapd.h" 20#include "ap/ap_config.h" 21#include "ap/sta_info.h" 22#include "ap/ap_drv_ops.h" 23#include "ap/wps_hostapd.h" 24#include "ap/p2p_hostapd.h" 25#include "eapol_supp/eapol_supp_sm.h" 26#include "rsn_supp/wpa.h" 27#include "wpa_supplicant_i.h" 28#include "driver_i.h" 29#include "ap.h" 30#include "config_ssid.h" 31#include "config.h" 32#include "notify.h" 33#include "scan.h" 34#include "bss.h" 35#include "offchannel.h" 36#include "wps_supplicant.h" 37#include "p2p_supplicant.h" 38#include "wifi_display.h" 39 40 41/* 42 * How many times to try to scan to find the GO before giving up on join 43 * request. 44 */ 45#define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 46 47#define P2P_AUTO_PD_SCAN_ATTEMPTS 5 48 49#ifndef P2P_MAX_CLIENT_IDLE 50/* 51 * How many seconds to try to reconnect to the GO when connection in P2P client 52 * role has been lost. 53 */ 54#define P2P_MAX_CLIENT_IDLE 10 55#endif /* P2P_MAX_CLIENT_IDLE */ 56 57#ifndef P2P_MAX_INITIAL_CONN_WAIT 58/* 59 * How many seconds to wait for initial 4-way handshake to get completed after 60 * WPS provisioning step or after the re-invocation of a persistent group on a 61 * P2P Client. 62 */ 63#define P2P_MAX_INITIAL_CONN_WAIT 10 64#endif /* P2P_MAX_INITIAL_CONN_WAIT */ 65 66#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO 67/* 68 * How many seconds to wait for initial 4-way handshake to get completed after 69 * WPS provisioning step on the GO. This controls the extra time the P2P 70 * operation is considered to be in progress (e.g., to delay other scans) after 71 * WPS provisioning has been completed on the GO during group formation. 72 */ 73#define P2P_MAX_INITIAL_CONN_WAIT_GO 10 74#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */ 75 76#ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 77/* 78 * How many seconds to wait for initial 4-way handshake to get completed after 79 * re-invocation of a persistent group on the GO when the client is expected 80 * to connect automatically (no user interaction). 81 */ 82#define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15 83#endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */ 84 85#ifndef P2P_CONCURRENT_SEARCH_DELAY 86#define P2P_CONCURRENT_SEARCH_DELAY 500 87#endif /* P2P_CONCURRENT_SEARCH_DELAY */ 88 89#define P2P_MGMT_DEVICE_PREFIX "p2p-dev-" 90 91enum p2p_group_removal_reason { 92 P2P_GROUP_REMOVAL_UNKNOWN, 93 P2P_GROUP_REMOVAL_SILENT, 94 P2P_GROUP_REMOVAL_FORMATION_FAILED, 95 P2P_GROUP_REMOVAL_REQUESTED, 96 P2P_GROUP_REMOVAL_IDLE_TIMEOUT, 97 P2P_GROUP_REMOVAL_UNAVAILABLE, 98 P2P_GROUP_REMOVAL_GO_ENDING_SESSION, 99 P2P_GROUP_REMOVAL_PSK_FAILURE, 100 P2P_GROUP_REMOVAL_FREQ_CONFLICT 101}; 102 103 104static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 105static struct wpa_supplicant * 106wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 107 int go); 108static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 109 const u8 *ssid, size_t ssid_len); 110static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 111 const u8 *ssid, size_t ssid_len); 112static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 113static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 114 const u8 *dev_addr, enum p2p_wps_method wps_method, 115 int auto_join, int freq, 116 const u8 *ssid, size_t ssid_len); 117static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 118static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 119static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 120static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 121static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 122 void *timeout_ctx); 123static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx); 124static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 125 int group_added); 126static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); 127static void wpas_stop_listen(void *ctx); 128 129 130/* 131 * Get the number of concurrent channels that the HW can operate, but that are 132 * currently not in use by any of the wpa_supplicant interfaces. 133 */ 134static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s) 135{ 136 int *freqs; 137 int num, unused; 138 139 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 140 if (!freqs) 141 return -1; 142 143 num = get_shared_radio_freqs(wpa_s, freqs, 144 wpa_s->num_multichan_concurrent); 145 os_free(freqs); 146 147 unused = wpa_s->num_multichan_concurrent - num; 148 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused); 149 return unused; 150} 151 152 153/* 154 * Get the frequencies that are currently in use by one or more of the virtual 155 * interfaces, and that are also valid for P2P operation. 156 */ 157static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s, 158 int *p2p_freqs, unsigned int len) 159{ 160 int *freqs; 161 unsigned int num, i, j; 162 163 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 164 if (!freqs) 165 return -1; 166 167 num = get_shared_radio_freqs(wpa_s, freqs, 168 wpa_s->num_multichan_concurrent); 169 170 os_memset(p2p_freqs, 0, sizeof(int) * len); 171 172 for (i = 0, j = 0; i < num && j < len; i++) { 173 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i])) 174 p2p_freqs[j++] = freqs[i]; 175 } 176 177 os_free(freqs); 178 179 dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j); 180 181 return j; 182} 183 184 185static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s, 186 int freq) 187{ 188 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 189 return; 190 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 191 freq > 0 && wpa_s->num_multichan_concurrent > 1 && 192 wpas_p2p_num_unused_channels(wpa_s) > 0) { 193 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration", 194 freq); 195 freq = 0; 196 } 197 p2p_set_own_freq_preference(wpa_s->global->p2p, freq); 198} 199 200 201static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 202 struct wpa_scan_results *scan_res) 203{ 204 size_t i; 205 206 if (wpa_s->p2p_scan_work) { 207 struct wpa_radio_work *work = wpa_s->p2p_scan_work; 208 wpa_s->p2p_scan_work = NULL; 209 radio_work_done(work); 210 } 211 212 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 213 return; 214 215 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 216 (int) scan_res->num); 217 218 for (i = 0; i < scan_res->num; i++) { 219 struct wpa_scan_res *bss = scan_res->res[i]; 220 struct os_reltime time_tmp_age, entry_ts; 221 const u8 *ies; 222 size_t ies_len; 223 224 time_tmp_age.sec = bss->age / 1000; 225 time_tmp_age.usec = (bss->age % 1000) * 1000; 226 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts); 227 228 ies = (const u8 *) (bss + 1); 229 ies_len = bss->ie_len; 230 if (bss->beacon_ie_len > 0 && 231 !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && 232 wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) { 233 wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for " 234 MACSTR, MAC2STR(bss->bssid)); 235 ies = ies + ies_len; 236 ies_len = bss->beacon_ie_len; 237 } 238 239 240 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 241 bss->freq, &entry_ts, bss->level, 242 ies, ies_len) > 0) 243 break; 244 } 245 246 p2p_scan_res_handled(wpa_s->global->p2p); 247} 248 249 250static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit) 251{ 252 struct wpa_supplicant *wpa_s = work->wpa_s; 253 struct wpa_driver_scan_params *params = work->ctx; 254 int ret; 255 256 if (deinit) { 257 if (!work->started) { 258 wpa_scan_free_params(params); 259 return; 260 } 261 262 wpa_s->p2p_scan_work = NULL; 263 return; 264 } 265 266 ret = wpa_drv_scan(wpa_s, params); 267 wpa_scan_free_params(params); 268 work->ctx = NULL; 269 if (ret) { 270 radio_work_done(work); 271 return; 272 } 273 274 os_get_reltime(&wpa_s->scan_trigger_time); 275 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 276 wpa_s->own_scan_requested = 1; 277 wpa_s->p2p_scan_work = work; 278} 279 280 281static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 282 unsigned int num_req_dev_types, 283 const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) 284{ 285 struct wpa_supplicant *wpa_s = ctx; 286 struct wpa_driver_scan_params *params = NULL; 287 struct wpabuf *wps_ie, *ies; 288 size_t ielen; 289 u8 *n; 290 291 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 292 return -1; 293 294 if (wpa_s->p2p_scan_work) { 295 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending"); 296 return -1; 297 } 298 299 params = os_zalloc(sizeof(*params)); 300 if (params == NULL) 301 return -1; 302 303 /* P2P Wildcard SSID */ 304 params->num_ssids = 1; 305 n = os_malloc(P2P_WILDCARD_SSID_LEN); 306 if (n == NULL) 307 goto fail; 308 os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN); 309 params->ssids[0].ssid = n; 310 params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 311 312 wpa_s->wps->dev.p2p = 1; 313 wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, 314 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 315 num_req_dev_types, req_dev_types); 316 if (wps_ie == NULL) 317 goto fail; 318 319 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 320 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 321 if (ies == NULL) { 322 wpabuf_free(wps_ie); 323 goto fail; 324 } 325 wpabuf_put_buf(ies, wps_ie); 326 wpabuf_free(wps_ie); 327 328 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 329 330 params->p2p_probe = 1; 331 n = os_malloc(wpabuf_len(ies)); 332 if (n == NULL) { 333 wpabuf_free(ies); 334 goto fail; 335 } 336 os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies)); 337 params->extra_ies = n; 338 params->extra_ies_len = wpabuf_len(ies); 339 wpabuf_free(ies); 340 341 switch (type) { 342 case P2P_SCAN_SOCIAL: 343 params->freqs = os_malloc(4 * sizeof(int)); 344 if (params->freqs == NULL) 345 goto fail; 346 params->freqs[0] = 2412; 347 params->freqs[1] = 2437; 348 params->freqs[2] = 2462; 349 params->freqs[3] = 0; 350 break; 351 case P2P_SCAN_FULL: 352 break; 353 case P2P_SCAN_SOCIAL_PLUS_ONE: 354 params->freqs = os_malloc(5 * sizeof(int)); 355 if (params->freqs == NULL) 356 goto fail; 357 params->freqs[0] = 2412; 358 params->freqs[1] = 2437; 359 params->freqs[2] = 2462; 360 params->freqs[3] = freq; 361 params->freqs[4] = 0; 362 break; 363 } 364 365 radio_remove_works(wpa_s, "p2p-scan", 0); 366 if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb, 367 params) < 0) 368 goto fail; 369 return 0; 370 371fail: 372 wpa_scan_free_params(params); 373 return -1; 374} 375 376 377static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 378{ 379 switch (p2p_group_interface) { 380 case P2P_GROUP_INTERFACE_PENDING: 381 return WPA_IF_P2P_GROUP; 382 case P2P_GROUP_INTERFACE_GO: 383 return WPA_IF_P2P_GO; 384 case P2P_GROUP_INTERFACE_CLIENT: 385 return WPA_IF_P2P_CLIENT; 386 } 387 388 return WPA_IF_P2P_GROUP; 389} 390 391 392static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 393 const u8 *ssid, 394 size_t ssid_len, int *go) 395{ 396 struct wpa_ssid *s; 397 398 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 399 for (s = wpa_s->conf->ssid; s; s = s->next) { 400 if (s->disabled != 0 || !s->p2p_group || 401 s->ssid_len != ssid_len || 402 os_memcmp(ssid, s->ssid, ssid_len) != 0) 403 continue; 404 if (s->mode == WPAS_MODE_P2P_GO && 405 s != wpa_s->current_ssid) 406 continue; 407 if (go) 408 *go = s->mode == WPAS_MODE_P2P_GO; 409 return wpa_s; 410 } 411 } 412 413 return NULL; 414} 415 416 417static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, 418 enum p2p_group_removal_reason removal_reason) 419{ 420 struct wpa_ssid *ssid; 421 char *gtype; 422 const char *reason; 423 424 ssid = wpa_s->current_ssid; 425 if (ssid == NULL) { 426 /* 427 * The current SSID was not known, but there may still be a 428 * pending P2P group interface waiting for provisioning or a 429 * P2P group that is trying to reconnect. 430 */ 431 ssid = wpa_s->conf->ssid; 432 while (ssid) { 433 if (ssid->p2p_group && ssid->disabled != 2) 434 break; 435 ssid = ssid->next; 436 } 437 if (ssid == NULL && 438 wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) 439 { 440 wpa_printf(MSG_ERROR, "P2P: P2P group interface " 441 "not found"); 442 return -1; 443 } 444 } 445 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 446 gtype = "GO"; 447 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 448 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 449 wpa_s->reassociate = 0; 450 wpa_s->disconnected = 1; 451 wpa_supplicant_deauthenticate(wpa_s, 452 WLAN_REASON_DEAUTH_LEAVING); 453 gtype = "client"; 454 } else 455 gtype = "GO"; 456 if (wpa_s->cross_connect_in_use) { 457 wpa_s->cross_connect_in_use = 0; 458 wpa_msg_global(wpa_s->parent, MSG_INFO, 459 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 460 wpa_s->ifname, wpa_s->cross_connect_uplink); 461 } 462 switch (removal_reason) { 463 case P2P_GROUP_REMOVAL_REQUESTED: 464 reason = " reason=REQUESTED"; 465 break; 466 case P2P_GROUP_REMOVAL_FORMATION_FAILED: 467 reason = " reason=FORMATION_FAILED"; 468 break; 469 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 470 reason = " reason=IDLE"; 471 break; 472 case P2P_GROUP_REMOVAL_UNAVAILABLE: 473 reason = " reason=UNAVAILABLE"; 474 break; 475 case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: 476 reason = " reason=GO_ENDING_SESSION"; 477 break; 478 case P2P_GROUP_REMOVAL_PSK_FAILURE: 479 reason = " reason=PSK_FAILURE"; 480 break; 481 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 482 reason = " reason=FREQ_CONFLICT"; 483 break; 484 default: 485 reason = ""; 486 break; 487 } 488 if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { 489 wpa_msg_global(wpa_s->parent, MSG_INFO, 490 P2P_EVENT_GROUP_REMOVED "%s %s%s", 491 wpa_s->ifname, gtype, reason); 492 } 493 494 if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0) 495 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout"); 496 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 497 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 498 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 499 wpa_s->parent, NULL) > 0) { 500 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation " 501 "timeout"); 502 wpa_s->p2p_in_provisioning = 0; 503 } 504 505 wpa_s->p2p_in_invitation = 0; 506 507 /* 508 * Make sure wait for the first client does not remain active after the 509 * group has been removed. 510 */ 511 wpa_s->global->p2p_go_wait_client.sec = 0; 512 513 if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) 514 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 515 516 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 517 struct wpa_global *global; 518 char *ifname; 519 enum wpa_driver_if_type type; 520 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 521 wpa_s->ifname); 522 global = wpa_s->global; 523 ifname = os_strdup(wpa_s->ifname); 524 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 525 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 526 wpa_s = global->ifaces; 527 if (wpa_s && ifname) 528 wpa_drv_if_remove(wpa_s, type, ifname); 529 os_free(ifname); 530 return 1; 531 } 532 533 if (!wpa_s->p2p_go_group_formation_completed) { 534 wpa_s->global->p2p_group_formation = NULL; 535 wpa_s->p2p_in_provisioning = 0; 536 } 537 538 wpa_s->show_group_started = 0; 539 os_free(wpa_s->go_params); 540 wpa_s->go_params = NULL; 541 542 wpa_s->waiting_presence_resp = 0; 543 544 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 545 if (ssid && (ssid->p2p_group || 546 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 547 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 548 int id = ssid->id; 549 if (ssid == wpa_s->current_ssid) { 550 wpa_sm_set_config(wpa_s->wpa, NULL); 551 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 552 wpa_s->current_ssid = NULL; 553 } 554 /* 555 * Networks objects created during any P2P activities are not 556 * exposed out as they might/will confuse certain non-P2P aware 557 * applications since these network objects won't behave like 558 * regular ones. 559 * 560 * Likewise, we don't send out network removed signals for such 561 * network objects. 562 */ 563 wpa_config_remove_network(wpa_s->conf, id); 564 wpa_supplicant_clear_status(wpa_s); 565 wpa_supplicant_cancel_sched_scan(wpa_s); 566 } else { 567 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 568 "found"); 569 } 570 if (wpa_s->ap_iface) 571 wpa_supplicant_ap_deinit(wpa_s); 572 else 573 wpa_drv_deinit_p2p_cli(wpa_s); 574 575 return 0; 576} 577 578 579static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 580 u8 *go_dev_addr, 581 const u8 *ssid, size_t ssid_len) 582{ 583 struct wpa_bss *bss; 584 const u8 *bssid; 585 struct wpabuf *p2p; 586 u8 group_capab; 587 const u8 *addr; 588 589 if (wpa_s->go_params) 590 bssid = wpa_s->go_params->peer_interface_addr; 591 else 592 bssid = wpa_s->bssid; 593 594 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 595 if (bss == NULL && wpa_s->go_params && 596 !is_zero_ether_addr(wpa_s->go_params->peer_device_addr)) 597 bss = wpa_bss_get_p2p_dev_addr( 598 wpa_s, wpa_s->go_params->peer_device_addr); 599 if (bss == NULL) { 600 u8 iface_addr[ETH_ALEN]; 601 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 602 iface_addr) == 0) 603 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 604 } 605 if (bss == NULL) { 606 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 607 "group is persistent - BSS " MACSTR " not found", 608 MAC2STR(bssid)); 609 return 0; 610 } 611 612 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 613 if (p2p == NULL) 614 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss, 615 P2P_IE_VENDOR_TYPE); 616 if (p2p == NULL) { 617 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 618 "group is persistent - BSS " MACSTR 619 " did not include P2P IE", MAC2STR(bssid)); 620 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 621 (u8 *) (bss + 1), bss->ie_len); 622 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 623 ((u8 *) bss + 1) + bss->ie_len, 624 bss->beacon_ie_len); 625 return 0; 626 } 627 628 group_capab = p2p_get_group_capab(p2p); 629 addr = p2p_get_go_dev_addr(p2p); 630 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 631 "group_capab=0x%x", group_capab); 632 if (addr) { 633 os_memcpy(go_dev_addr, addr, ETH_ALEN); 634 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 635 MAC2STR(addr)); 636 } else 637 os_memset(go_dev_addr, 0, ETH_ALEN); 638 wpabuf_free(p2p); 639 640 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 641 "go_dev_addr=" MACSTR, 642 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 643 644 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 645} 646 647 648static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 649 struct wpa_ssid *ssid, 650 const u8 *go_dev_addr) 651{ 652 struct wpa_ssid *s; 653 int changed = 0; 654 655 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 656 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 657 for (s = wpa_s->conf->ssid; s; s = s->next) { 658 if (s->disabled == 2 && 659 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 660 s->ssid_len == ssid->ssid_len && 661 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 662 break; 663 } 664 665 if (s) { 666 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 667 "entry"); 668 if (ssid->passphrase && !s->passphrase) 669 changed = 1; 670 else if (ssid->passphrase && s->passphrase && 671 os_strcmp(ssid->passphrase, s->passphrase) != 0) 672 changed = 1; 673 } else { 674 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 675 "entry"); 676 changed = 1; 677 s = wpa_config_add_network(wpa_s->conf); 678 if (s == NULL) 679 return -1; 680 681 /* 682 * Instead of network_added we emit persistent_group_added 683 * notification. Also to keep the defense checks in 684 * persistent_group obj registration method, we set the 685 * relevant flags in s to designate it as a persistent group. 686 */ 687 s->p2p_group = 1; 688 s->p2p_persistent_group = 1; 689 wpas_notify_persistent_group_added(wpa_s, s); 690 wpa_config_set_network_defaults(s); 691 } 692 693 s->p2p_group = 1; 694 s->p2p_persistent_group = 1; 695 s->disabled = 2; 696 s->bssid_set = 1; 697 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 698 s->mode = ssid->mode; 699 s->auth_alg = WPA_AUTH_ALG_OPEN; 700 s->key_mgmt = WPA_KEY_MGMT_PSK; 701 s->proto = WPA_PROTO_RSN; 702 s->pairwise_cipher = WPA_CIPHER_CCMP; 703 s->export_keys = 1; 704 if (ssid->passphrase) { 705 os_free(s->passphrase); 706 s->passphrase = os_strdup(ssid->passphrase); 707 } 708 if (ssid->psk_set) { 709 s->psk_set = 1; 710 os_memcpy(s->psk, ssid->psk, 32); 711 } 712 if (s->passphrase && !s->psk_set) 713 wpa_config_update_psk(s); 714 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 715 os_free(s->ssid); 716 s->ssid = os_malloc(ssid->ssid_len); 717 } 718 if (s->ssid) { 719 s->ssid_len = ssid->ssid_len; 720 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 721 } 722 if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) { 723 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list); 724 wpa_s->global->add_psk = NULL; 725 changed = 1; 726 } 727 728 if (changed && wpa_s->conf->update_config && 729 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 730 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 731 } 732 733 return s->id; 734} 735 736 737static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 738 const u8 *addr) 739{ 740 struct wpa_ssid *ssid, *s; 741 u8 *n; 742 size_t i; 743 int found = 0; 744 745 ssid = wpa_s->current_ssid; 746 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 747 !ssid->p2p_persistent_group) 748 return; 749 750 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 751 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 752 continue; 753 754 if (s->ssid_len == ssid->ssid_len && 755 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 756 break; 757 } 758 759 if (s == NULL) 760 return; 761 762 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 763 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 764 ETH_ALEN) != 0) 765 continue; 766 767 if (i == s->num_p2p_clients - 1) 768 return; /* already the most recent entry */ 769 770 /* move the entry to mark it most recent */ 771 os_memmove(s->p2p_client_list + i * ETH_ALEN, 772 s->p2p_client_list + (i + 1) * ETH_ALEN, 773 (s->num_p2p_clients - i - 1) * ETH_ALEN); 774 os_memcpy(s->p2p_client_list + 775 (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN); 776 found = 1; 777 break; 778 } 779 780 if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { 781 n = os_realloc_array(s->p2p_client_list, 782 s->num_p2p_clients + 1, ETH_ALEN); 783 if (n == NULL) 784 return; 785 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 786 s->p2p_client_list = n; 787 s->num_p2p_clients++; 788 } else if (!found) { 789 /* Not enough room for an additional entry - drop the oldest 790 * entry */ 791 os_memmove(s->p2p_client_list, 792 s->p2p_client_list + ETH_ALEN, 793 (s->num_p2p_clients - 1) * ETH_ALEN); 794 os_memcpy(s->p2p_client_list + 795 (s->num_p2p_clients - 1) * ETH_ALEN, 796 addr, ETH_ALEN); 797 } 798 799 if (wpa_s->parent->conf->update_config && 800 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 801 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 802} 803 804 805static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 806 int success) 807{ 808 struct wpa_ssid *ssid; 809 const char *ssid_txt; 810 int client; 811 int persistent; 812 u8 go_dev_addr[ETH_ALEN]; 813 int network_id = -1; 814 815 /* 816 * This callback is likely called for the main interface. Update wpa_s 817 * to use the group interface if a new interface was created for the 818 * group. 819 */ 820 if (wpa_s->global->p2p_group_formation) 821 wpa_s = wpa_s->global->p2p_group_formation; 822 if (wpa_s->p2p_go_group_formation_completed) { 823 wpa_s->global->p2p_group_formation = NULL; 824 wpa_s->p2p_in_provisioning = 0; 825 } 826 wpa_s->p2p_in_invitation = 0; 827 828 if (!success) { 829 wpa_msg_global(wpa_s->parent, MSG_INFO, 830 P2P_EVENT_GROUP_FORMATION_FAILURE); 831 wpas_p2p_group_delete(wpa_s, 832 P2P_GROUP_REMOVAL_FORMATION_FAILED); 833 return; 834 } 835 836 wpa_msg_global(wpa_s->parent, MSG_INFO, 837 P2P_EVENT_GROUP_FORMATION_SUCCESS); 838 839 ssid = wpa_s->current_ssid; 840 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 841 ssid->mode = WPAS_MODE_P2P_GO; 842 p2p_group_notif_formation_done(wpa_s->p2p_group); 843 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 844 } 845 846 persistent = 0; 847 if (ssid) { 848 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 849 client = ssid->mode == WPAS_MODE_INFRA; 850 if (ssid->mode == WPAS_MODE_P2P_GO) { 851 persistent = ssid->p2p_persistent_group; 852 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 853 ETH_ALEN); 854 } else 855 persistent = wpas_p2p_persistent_group(wpa_s, 856 go_dev_addr, 857 ssid->ssid, 858 ssid->ssid_len); 859 } else { 860 ssid_txt = ""; 861 client = wpa_s->p2p_group_interface == 862 P2P_GROUP_INTERFACE_CLIENT; 863 os_memset(go_dev_addr, 0, ETH_ALEN); 864 } 865 866 wpa_s->show_group_started = 0; 867 if (client) { 868 /* 869 * Indicate event only after successfully completed 4-way 870 * handshake, i.e., when the interface is ready for data 871 * packets. 872 */ 873 wpa_s->show_group_started = 1; 874 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 875 char psk[65]; 876 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 877 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 878 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 879 MACSTR "%s", 880 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 881 MAC2STR(go_dev_addr), 882 persistent ? " [PERSISTENT]" : ""); 883 wpas_p2p_cross_connect_setup(wpa_s); 884 wpas_p2p_set_group_idle_timeout(wpa_s); 885 } else { 886 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 887 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 888 "go_dev_addr=" MACSTR "%s", 889 wpa_s->ifname, ssid_txt, 890 ssid ? ssid->frequency : 0, 891 ssid && ssid->passphrase ? ssid->passphrase : "", 892 MAC2STR(go_dev_addr), 893 persistent ? " [PERSISTENT]" : ""); 894 wpas_p2p_cross_connect_setup(wpa_s); 895 wpas_p2p_set_group_idle_timeout(wpa_s); 896 } 897 898 if (persistent) 899 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 900 ssid, go_dev_addr); 901 else { 902 os_free(wpa_s->global->add_psk); 903 wpa_s->global->add_psk = NULL; 904 } 905 if (network_id < 0 && ssid) 906 network_id = ssid->id; 907 if (!client) { 908 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 909 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 910 } 911} 912 913 914struct send_action_work { 915 unsigned int freq; 916 u8 dst[ETH_ALEN]; 917 u8 src[ETH_ALEN]; 918 u8 bssid[ETH_ALEN]; 919 size_t len; 920 unsigned int wait_time; 921 u8 buf[0]; 922}; 923 924 925static void wpas_p2p_send_action_work_timeout(void *eloop_ctx, 926 void *timeout_ctx) 927{ 928 struct wpa_supplicant *wpa_s = eloop_ctx; 929 930 if (!wpa_s->p2p_send_action_work) 931 return; 932 933 wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out"); 934 os_free(wpa_s->p2p_send_action_work->ctx); 935 radio_work_done(wpa_s->p2p_send_action_work); 936 wpa_s->p2p_send_action_work = NULL; 937} 938 939 940static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 941 unsigned int freq, 942 const u8 *dst, const u8 *src, 943 const u8 *bssid, 944 const u8 *data, size_t data_len, 945 enum offchannel_send_action_result 946 result) 947{ 948 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 949 950 if (wpa_s->p2p_send_action_work) { 951 struct send_action_work *awork; 952 awork = wpa_s->p2p_send_action_work->ctx; 953 if (awork->wait_time == 0) { 954 os_free(awork); 955 radio_work_done(wpa_s->p2p_send_action_work); 956 wpa_s->p2p_send_action_work = NULL; 957 } else { 958 /* 959 * In theory, this should not be needed, but number of 960 * places in the P2P code is still using non-zero wait 961 * time for the last Action frame in the sequence and 962 * some of these do not call send_action_done(). 963 */ 964 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 965 wpa_s, NULL); 966 eloop_register_timeout( 967 0, awork->wait_time * 1000, 968 wpas_p2p_send_action_work_timeout, 969 wpa_s, NULL); 970 } 971 } 972 973 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 974 return; 975 976 switch (result) { 977 case OFFCHANNEL_SEND_ACTION_SUCCESS: 978 res = P2P_SEND_ACTION_SUCCESS; 979 break; 980 case OFFCHANNEL_SEND_ACTION_NO_ACK: 981 res = P2P_SEND_ACTION_NO_ACK; 982 break; 983 case OFFCHANNEL_SEND_ACTION_FAILED: 984 res = P2P_SEND_ACTION_FAILED; 985 break; 986 } 987 988 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 989 990 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 991 wpa_s->pending_pd_before_join && 992 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 993 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && 994 wpa_s->p2p_fallback_to_go_neg) { 995 wpa_s->pending_pd_before_join = 0; 996 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " 997 "during p2p_connect-auto"); 998 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 999 return; 1000 } 1001} 1002 1003 1004static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit) 1005{ 1006 struct wpa_supplicant *wpa_s = work->wpa_s; 1007 struct send_action_work *awork = work->ctx; 1008 1009 if (deinit) { 1010 if (work->started) { 1011 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1012 wpa_s, NULL); 1013 wpa_s->p2p_send_action_work = NULL; 1014 offchannel_send_action_done(wpa_s); 1015 } 1016 os_free(awork); 1017 return; 1018 } 1019 1020 if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src, 1021 awork->bssid, awork->buf, awork->len, 1022 awork->wait_time, 1023 wpas_p2p_send_action_tx_status, 1) < 0) { 1024 os_free(awork); 1025 radio_work_done(work); 1026 return; 1027 } 1028 wpa_s->p2p_send_action_work = work; 1029} 1030 1031 1032static int wpas_send_action_work(struct wpa_supplicant *wpa_s, 1033 unsigned int freq, const u8 *dst, 1034 const u8 *src, const u8 *bssid, const u8 *buf, 1035 size_t len, unsigned int wait_time) 1036{ 1037 struct send_action_work *awork; 1038 1039 if (wpa_s->p2p_send_action_work) { 1040 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending"); 1041 return -1; 1042 } 1043 1044 awork = os_zalloc(sizeof(*awork) + len); 1045 if (awork == NULL) 1046 return -1; 1047 1048 awork->freq = freq; 1049 os_memcpy(awork->dst, dst, ETH_ALEN); 1050 os_memcpy(awork->src, src, ETH_ALEN); 1051 os_memcpy(awork->bssid, bssid, ETH_ALEN); 1052 awork->len = len; 1053 awork->wait_time = wait_time; 1054 os_memcpy(awork->buf, buf, len); 1055 1056 if (radio_add_work(wpa_s, freq, "p2p-send-action", 0, 1057 wpas_send_action_cb, awork) < 0) { 1058 os_free(awork); 1059 return -1; 1060 } 1061 1062 return 0; 1063} 1064 1065 1066static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 1067 const u8 *src, const u8 *bssid, const u8 *buf, 1068 size_t len, unsigned int wait_time) 1069{ 1070 struct wpa_supplicant *wpa_s = ctx; 1071 int listen_freq = -1, send_freq = -1; 1072 1073 if (wpa_s->p2p_listen_work) 1074 listen_freq = wpa_s->p2p_listen_work->freq; 1075 if (wpa_s->p2p_send_action_work) 1076 send_freq = wpa_s->p2p_send_action_work->freq; 1077 if (listen_freq != (int) freq && send_freq != (int) freq) { 1078 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)", 1079 listen_freq, send_freq); 1080 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf, 1081 len, wait_time); 1082 } 1083 1084 wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX"); 1085 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 1086 wait_time, 1087 wpas_p2p_send_action_tx_status, 1); 1088} 1089 1090 1091static void wpas_send_action_done(void *ctx) 1092{ 1093 struct wpa_supplicant *wpa_s = ctx; 1094 1095 if (wpa_s->p2p_send_action_work) { 1096 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, 1097 wpa_s, NULL); 1098 os_free(wpa_s->p2p_send_action_work->ctx); 1099 radio_work_done(wpa_s->p2p_send_action_work); 1100 wpa_s->p2p_send_action_work = NULL; 1101 } 1102 1103 offchannel_send_action_done(wpa_s); 1104} 1105 1106 1107static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 1108 struct p2p_go_neg_results *params) 1109{ 1110 if (wpa_s->go_params == NULL) { 1111 wpa_s->go_params = os_malloc(sizeof(*params)); 1112 if (wpa_s->go_params == NULL) 1113 return -1; 1114 } 1115 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 1116 return 0; 1117} 1118 1119 1120static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 1121 struct p2p_go_neg_results *res) 1122{ 1123 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR 1124 " dev_addr " MACSTR " wps_method %d", 1125 MAC2STR(res->peer_interface_addr), 1126 MAC2STR(res->peer_device_addr), res->wps_method); 1127 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 1128 res->ssid, res->ssid_len); 1129 wpa_supplicant_ap_deinit(wpa_s); 1130 wpas_copy_go_neg_results(wpa_s, res); 1131 if (res->wps_method == WPS_PBC) { 1132 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 1133#ifdef CONFIG_WPS_NFC 1134 } else if (res->wps_method == WPS_NFC) { 1135 wpas_wps_start_nfc(wpa_s, res->peer_device_addr, 1136 res->peer_interface_addr, 1137 wpa_s->parent->p2p_oob_dev_pw, 1138 wpa_s->parent->p2p_oob_dev_pw_id, 1, 1139 wpa_s->parent->p2p_oob_dev_pw_id == 1140 DEV_PW_NFC_CONNECTION_HANDOVER ? 1141 wpa_s->parent->p2p_peer_oob_pubkey_hash : 1142 NULL, 1143 NULL, 0, 0); 1144#endif /* CONFIG_WPS_NFC */ 1145 } else { 1146 u16 dev_pw_id = DEV_PW_DEFAULT; 1147 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 1148 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 1149 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 1150 wpa_s->p2p_pin, 1, dev_pw_id); 1151 } 1152} 1153 1154 1155static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s, 1156 struct wpa_ssid *ssid) 1157{ 1158 struct wpa_ssid *persistent; 1159 struct psk_list_entry *psk; 1160 struct hostapd_data *hapd; 1161 1162 if (!wpa_s->ap_iface) 1163 return; 1164 1165 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 1166 ssid->ssid_len); 1167 if (persistent == NULL) 1168 return; 1169 1170 hapd = wpa_s->ap_iface->bss[0]; 1171 1172 dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry, 1173 list) { 1174 struct hostapd_wpa_psk *hpsk; 1175 1176 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for " 1177 MACSTR " psk=%d", 1178 MAC2STR(psk->addr), psk->p2p); 1179 hpsk = os_zalloc(sizeof(*hpsk)); 1180 if (hpsk == NULL) 1181 break; 1182 os_memcpy(hpsk->psk, psk->psk, PMK_LEN); 1183 if (psk->p2p) 1184 os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN); 1185 else 1186 os_memcpy(hpsk->addr, psk->addr, ETH_ALEN); 1187 hpsk->next = hapd->conf->ssid.wpa_psk; 1188 hapd->conf->ssid.wpa_psk = hpsk; 1189 } 1190} 1191 1192 1193static void p2p_go_configured(void *ctx, void *data) 1194{ 1195 struct wpa_supplicant *wpa_s = ctx; 1196 struct p2p_go_neg_results *params = data; 1197 struct wpa_ssid *ssid; 1198 int network_id = -1; 1199 1200 ssid = wpa_s->current_ssid; 1201 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 1202 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 1203 if (wpa_s->global->p2p_group_formation == wpa_s) 1204 wpa_s->global->p2p_group_formation = NULL; 1205 if (os_strlen(params->passphrase) > 0) { 1206 wpa_msg_global(wpa_s->parent, MSG_INFO, 1207 P2P_EVENT_GROUP_STARTED 1208 "%s GO ssid=\"%s\" freq=%d " 1209 "passphrase=\"%s\" go_dev_addr=" MACSTR 1210 "%s", wpa_s->ifname, 1211 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 1212 ssid->frequency, params->passphrase, 1213 MAC2STR(wpa_s->global->p2p_dev_addr), 1214 params->persistent_group ? 1215 " [PERSISTENT]" : ""); 1216 } else { 1217 char psk[65]; 1218 wpa_snprintf_hex(psk, sizeof(psk), params->psk, 1219 sizeof(params->psk)); 1220 wpa_msg_global(wpa_s->parent, MSG_INFO, 1221 P2P_EVENT_GROUP_STARTED 1222 "%s GO ssid=\"%s\" freq=%d psk=%s " 1223 "go_dev_addr=" MACSTR "%s", 1224 wpa_s->ifname, 1225 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 1226 ssid->frequency, psk, 1227 MAC2STR(wpa_s->global->p2p_dev_addr), 1228 params->persistent_group ? 1229 " [PERSISTENT]" : ""); 1230 } 1231 1232 os_get_reltime(&wpa_s->global->p2p_go_wait_client); 1233 if (params->persistent_group) { 1234 network_id = wpas_p2p_store_persistent_group( 1235 wpa_s->parent, ssid, 1236 wpa_s->global->p2p_dev_addr); 1237 wpas_p2p_add_psk_list(wpa_s, ssid); 1238 } 1239 if (network_id < 0) 1240 network_id = ssid->id; 1241 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 1242 wpas_p2p_cross_connect_setup(wpa_s); 1243 wpas_p2p_set_group_idle_timeout(wpa_s); 1244 1245 if (wpa_s->p2p_first_connection_timeout) { 1246 wpa_dbg(wpa_s, MSG_DEBUG, 1247 "P2P: Start group formation timeout of %d seconds until first data connection on GO", 1248 wpa_s->p2p_first_connection_timeout); 1249 wpa_s->p2p_go_group_formation_completed = 0; 1250 wpa_s->global->p2p_group_formation = wpa_s; 1251 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1252 wpa_s->parent, NULL); 1253 eloop_register_timeout( 1254 wpa_s->p2p_first_connection_timeout, 0, 1255 wpas_p2p_group_formation_timeout, 1256 wpa_s->parent, NULL); 1257 } 1258 1259 return; 1260 } 1261 1262 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 1263 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 1264 params->peer_interface_addr)) { 1265 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 1266 "filtering"); 1267 return; 1268 } 1269 if (params->wps_method == WPS_PBC) { 1270 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 1271 params->peer_device_addr); 1272#ifdef CONFIG_WPS_NFC 1273 } else if (params->wps_method == WPS_NFC) { 1274 if (wpa_s->parent->p2p_oob_dev_pw_id != 1275 DEV_PW_NFC_CONNECTION_HANDOVER && 1276 !wpa_s->parent->p2p_oob_dev_pw) { 1277 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 1278 return; 1279 } 1280 wpas_ap_wps_add_nfc_pw( 1281 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 1282 wpa_s->parent->p2p_oob_dev_pw, 1283 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 1284 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 1285#endif /* CONFIG_WPS_NFC */ 1286 } else if (wpa_s->p2p_pin[0]) 1287 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 1288 wpa_s->p2p_pin, NULL, 0, 0); 1289 os_free(wpa_s->go_params); 1290 wpa_s->go_params = NULL; 1291} 1292 1293 1294static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 1295 struct p2p_go_neg_results *params, 1296 int group_formation) 1297{ 1298 struct wpa_ssid *ssid; 1299 1300 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); 1301 if (wpas_copy_go_neg_results(wpa_s, params) < 0) { 1302 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " 1303 "results"); 1304 return; 1305 } 1306 1307 ssid = wpa_config_add_network(wpa_s->conf); 1308 if (ssid == NULL) { 1309 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); 1310 return; 1311 } 1312 1313 wpa_s->show_group_started = 0; 1314 1315 wpa_config_set_network_defaults(ssid); 1316 ssid->temporary = 1; 1317 ssid->p2p_group = 1; 1318 ssid->p2p_persistent_group = params->persistent_group; 1319 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 1320 WPAS_MODE_P2P_GO; 1321 ssid->frequency = params->freq; 1322 ssid->ht40 = params->ht40; 1323 ssid->vht = params->vht; 1324 ssid->ssid = os_zalloc(params->ssid_len + 1); 1325 if (ssid->ssid) { 1326 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 1327 ssid->ssid_len = params->ssid_len; 1328 } 1329 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 1330 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 1331 ssid->proto = WPA_PROTO_RSN; 1332 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 1333 if (os_strlen(params->passphrase) > 0) { 1334 ssid->passphrase = os_strdup(params->passphrase); 1335 if (ssid->passphrase == NULL) { 1336 wpa_msg_global(wpa_s, MSG_ERROR, 1337 "P2P: Failed to copy passphrase for GO"); 1338 wpa_config_remove_network(wpa_s->conf, ssid->id); 1339 return; 1340 } 1341 } else 1342 ssid->passphrase = NULL; 1343 ssid->psk_set = params->psk_set; 1344 if (ssid->psk_set) 1345 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); 1346 else if (ssid->passphrase) 1347 wpa_config_update_psk(ssid); 1348 ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; 1349 1350 wpa_s->ap_configured_cb = p2p_go_configured; 1351 wpa_s->ap_configured_cb_ctx = wpa_s; 1352 wpa_s->ap_configured_cb_data = wpa_s->go_params; 1353 wpa_s->connect_without_scan = ssid; 1354 wpa_s->reassociate = 1; 1355 wpa_s->disconnected = 0; 1356 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " 1357 "start GO)"); 1358 wpa_supplicant_req_scan(wpa_s, 0, 0); 1359} 1360 1361 1362static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 1363 const struct wpa_supplicant *src) 1364{ 1365 struct wpa_config *d; 1366 const struct wpa_config *s; 1367 1368 d = dst->conf; 1369 s = src->conf; 1370 1371#define C(n) if (s->n) d->n = os_strdup(s->n) 1372 C(device_name); 1373 C(manufacturer); 1374 C(model_name); 1375 C(model_number); 1376 C(serial_number); 1377 C(config_methods); 1378#undef C 1379 1380 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 1381 os_memcpy(d->sec_device_type, s->sec_device_type, 1382 sizeof(d->sec_device_type)); 1383 d->num_sec_device_types = s->num_sec_device_types; 1384 1385 d->p2p_group_idle = s->p2p_group_idle; 1386 d->p2p_intra_bss = s->p2p_intra_bss; 1387 d->persistent_reconnect = s->persistent_reconnect; 1388 d->max_num_sta = s->max_num_sta; 1389 d->pbc_in_m1 = s->pbc_in_m1; 1390 d->ignore_old_scan_res = s->ignore_old_scan_res; 1391 d->beacon_int = s->beacon_int; 1392 d->dtim_period = s->dtim_period; 1393 d->disassoc_low_ack = s->disassoc_low_ack; 1394 d->disable_scan_offload = s->disable_scan_offload; 1395 1396 if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) { 1397 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey); 1398 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey); 1399 } 1400} 1401 1402 1403static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s, 1404 char *ifname, size_t len) 1405{ 1406 char *ifname_ptr = wpa_s->ifname; 1407 1408 if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX, 1409 os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) { 1410 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1; 1411 } 1412 1413 os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx); 1414 if (os_strlen(ifname) >= IFNAMSIZ && 1415 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 1416 /* Try to avoid going over the IFNAMSIZ length limit */ 1417 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx); 1418 } 1419} 1420 1421 1422static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 1423 enum wpa_driver_if_type type) 1424{ 1425 char ifname[120], force_ifname[120]; 1426 1427 if (wpa_s->pending_interface_name[0]) { 1428 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 1429 "- skip creation of a new one"); 1430 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 1431 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 1432 "unknown?! ifname='%s'", 1433 wpa_s->pending_interface_name); 1434 return -1; 1435 } 1436 return 0; 1437 } 1438 1439 wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname)); 1440 force_ifname[0] = '\0'; 1441 1442 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 1443 ifname); 1444 wpa_s->p2p_group_idx++; 1445 1446 wpa_s->pending_interface_type = type; 1447 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 1448 wpa_s->pending_interface_addr, NULL) < 0) { 1449 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 1450 "interface"); 1451 return -1; 1452 } 1453 1454 if (force_ifname[0]) { 1455 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 1456 force_ifname); 1457 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 1458 sizeof(wpa_s->pending_interface_name)); 1459 } else 1460 os_strlcpy(wpa_s->pending_interface_name, ifname, 1461 sizeof(wpa_s->pending_interface_name)); 1462 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 1463 MACSTR, wpa_s->pending_interface_name, 1464 MAC2STR(wpa_s->pending_interface_addr)); 1465 1466 return 0; 1467} 1468 1469 1470static void wpas_p2p_remove_pending_group_interface( 1471 struct wpa_supplicant *wpa_s) 1472{ 1473 if (!wpa_s->pending_interface_name[0] || 1474 is_zero_ether_addr(wpa_s->pending_interface_addr)) 1475 return; /* No pending virtual interface */ 1476 1477 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 1478 wpa_s->pending_interface_name); 1479 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 1480 wpa_s->pending_interface_name); 1481 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1482 wpa_s->pending_interface_name[0] = '\0'; 1483} 1484 1485 1486static struct wpa_supplicant * 1487wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 1488{ 1489 struct wpa_interface iface; 1490 struct wpa_supplicant *group_wpa_s; 1491 1492 if (!wpa_s->pending_interface_name[0]) { 1493 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 1494 if (!wpas_p2p_create_iface(wpa_s)) 1495 return NULL; 1496 /* 1497 * Something has forced us to remove the pending interface; try 1498 * to create a new one and hope for the best that we will get 1499 * the same local address. 1500 */ 1501 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 1502 WPA_IF_P2P_CLIENT) < 0) 1503 return NULL; 1504 } 1505 1506 os_memset(&iface, 0, sizeof(iface)); 1507 iface.ifname = wpa_s->pending_interface_name; 1508 iface.driver = wpa_s->driver->name; 1509 if (wpa_s->conf->ctrl_interface == NULL && 1510 wpa_s->parent != wpa_s && 1511 wpa_s->p2p_mgmt && 1512 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) 1513 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface; 1514 else 1515 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 1516 iface.driver_param = wpa_s->conf->driver_param; 1517 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 1518 if (group_wpa_s == NULL) { 1519 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 1520 "wpa_supplicant interface"); 1521 return NULL; 1522 } 1523 wpa_s->pending_interface_name[0] = '\0'; 1524 group_wpa_s->parent = wpa_s; 1525 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 1526 P2P_GROUP_INTERFACE_CLIENT; 1527 wpa_s->global->p2p_group_formation = group_wpa_s; 1528 1529 wpas_p2p_clone_config(group_wpa_s, wpa_s); 1530 1531 return group_wpa_s; 1532} 1533 1534 1535static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 1536 void *timeout_ctx) 1537{ 1538 struct wpa_supplicant *wpa_s = eloop_ctx; 1539 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 1540 wpas_p2p_group_formation_failed(wpa_s); 1541} 1542 1543 1544void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s) 1545{ 1546 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1547 wpa_s->parent, NULL); 1548 if (wpa_s->global->p2p) 1549 p2p_group_formation_failed(wpa_s->global->p2p); 1550 wpas_group_formation_completed(wpa_s, 0); 1551} 1552 1553 1554static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s) 1555{ 1556 wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure"); 1557 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1558 wpa_s->parent, NULL); 1559 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 1560 wpa_s->parent, NULL); 1561 wpa_s->global->p2p_fail_on_wps_complete = 0; 1562} 1563 1564 1565void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s) 1566{ 1567 if (wpa_s->global->p2p_group_formation != wpa_s) 1568 return; 1569 /* Speed up group formation timeout since this cannot succeed */ 1570 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 1571 wpa_s->parent, NULL); 1572 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 1573 wpa_s->parent, NULL); 1574} 1575 1576 1577static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 1578{ 1579 struct wpa_supplicant *wpa_s = ctx; 1580 1581 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1582 wpa_drv_cancel_remain_on_channel(wpa_s); 1583 wpa_s->off_channel_freq = 0; 1584 wpa_s->roc_waiting_drv_freq = 0; 1585 } 1586 1587 if (res->status) { 1588 wpa_msg_global(wpa_s, MSG_INFO, 1589 P2P_EVENT_GO_NEG_FAILURE "status=%d", 1590 res->status); 1591 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1592 wpas_p2p_remove_pending_group_interface(wpa_s); 1593 return; 1594 } 1595 1596 if (wpa_s->p2p_go_ht40) 1597 res->ht40 = 1; 1598 if (wpa_s->p2p_go_vht) 1599 res->vht = 1; 1600 1601 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s " 1602 "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR 1603 " wps_method=%s", 1604 res->role_go ? "GO" : "client", res->freq, res->ht40, 1605 MAC2STR(res->peer_device_addr), 1606 MAC2STR(res->peer_interface_addr), 1607 p2p_wps_method_text(res->wps_method)); 1608 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1609 1610 if (res->role_go && wpa_s->p2p_persistent_id >= 0) { 1611 struct wpa_ssid *ssid; 1612 ssid = wpa_config_get_network(wpa_s->conf, 1613 wpa_s->p2p_persistent_id); 1614 if (ssid && ssid->disabled == 2 && 1615 ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { 1616 size_t len = os_strlen(ssid->passphrase); 1617 wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " 1618 "on requested persistent group"); 1619 os_memcpy(res->passphrase, ssid->passphrase, len); 1620 res->passphrase[len] = '\0'; 1621 } 1622 } 1623 1624 if (wpa_s->create_p2p_iface) { 1625 struct wpa_supplicant *group_wpa_s = 1626 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1627 if (group_wpa_s == NULL) { 1628 wpas_p2p_remove_pending_group_interface(wpa_s); 1629 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, 1630 wpa_s, NULL); 1631 wpas_p2p_group_formation_failed(wpa_s); 1632 return; 1633 } 1634 if (group_wpa_s != wpa_s) { 1635 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1636 sizeof(group_wpa_s->p2p_pin)); 1637 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1638 } 1639 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1640 wpa_s->pending_interface_name[0] = '\0'; 1641 group_wpa_s->p2p_in_provisioning = 1; 1642 1643 if (res->role_go) 1644 wpas_start_wps_go(group_wpa_s, res, 1); 1645 else 1646 wpas_start_wps_enrollee(group_wpa_s, res); 1647 } else { 1648 wpa_s->p2p_in_provisioning = 1; 1649 wpa_s->global->p2p_group_formation = wpa_s; 1650 1651 if (res->role_go) 1652 wpas_start_wps_go(wpa_s, res, 1); 1653 else 1654 wpas_start_wps_enrollee(ctx, res); 1655 } 1656 1657 wpa_s->p2p_long_listen = 0; 1658 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1659 1660 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1661 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1662 (res->peer_config_timeout % 100) * 10000, 1663 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1664} 1665 1666 1667static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1668{ 1669 struct wpa_supplicant *wpa_s = ctx; 1670 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1671 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1672 1673 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1674} 1675 1676 1677static void wpas_dev_found(void *ctx, const u8 *addr, 1678 const struct p2p_peer_info *info, 1679 int new_device) 1680{ 1681#ifndef CONFIG_NO_STDOUT_DEBUG 1682 struct wpa_supplicant *wpa_s = ctx; 1683 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1684 char *wfd_dev_info_hex = NULL; 1685 1686#ifdef CONFIG_WIFI_DISPLAY 1687 wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems, 1688 WFD_SUBELEM_DEVICE_INFO); 1689#endif /* CONFIG_WIFI_DISPLAY */ 1690 1691 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1692 " p2p_dev_addr=" MACSTR 1693 " pri_dev_type=%s name='%s' config_methods=0x%x " 1694 "dev_capab=0x%x group_capab=0x%x%s%s", 1695 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1696 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1697 sizeof(devtype)), 1698 info->device_name, info->config_methods, 1699 info->dev_capab, info->group_capab, 1700 wfd_dev_info_hex ? " wfd_dev_info=0x" : "", 1701 wfd_dev_info_hex ? wfd_dev_info_hex : ""); 1702 1703 os_free(wfd_dev_info_hex); 1704#endif /* CONFIG_NO_STDOUT_DEBUG */ 1705 1706 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1707} 1708 1709 1710static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1711{ 1712 struct wpa_supplicant *wpa_s = ctx; 1713 1714 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1715 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1716 1717 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1718} 1719 1720 1721static void wpas_find_stopped(void *ctx) 1722{ 1723 struct wpa_supplicant *wpa_s = ctx; 1724 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED); 1725} 1726 1727 1728struct wpas_p2p_listen_work { 1729 unsigned int freq; 1730 unsigned int duration; 1731 struct wpabuf *probe_resp_ie; 1732}; 1733 1734 1735static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork) 1736{ 1737 if (lwork == NULL) 1738 return; 1739 wpabuf_free(lwork->probe_resp_ie); 1740 os_free(lwork); 1741} 1742 1743 1744static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s) 1745{ 1746 struct wpas_p2p_listen_work *lwork; 1747 1748 if (!wpa_s->p2p_listen_work) 1749 return; 1750 1751 lwork = wpa_s->p2p_listen_work->ctx; 1752 wpas_p2p_listen_work_free(lwork); 1753 radio_work_done(wpa_s->p2p_listen_work); 1754 wpa_s->p2p_listen_work = NULL; 1755} 1756 1757 1758static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit) 1759{ 1760 struct wpa_supplicant *wpa_s = work->wpa_s; 1761 struct wpas_p2p_listen_work *lwork = work->ctx; 1762 1763 if (deinit) { 1764 if (work->started) { 1765 wpa_s->p2p_listen_work = NULL; 1766 wpas_stop_listen(wpa_s); 1767 } 1768 wpas_p2p_listen_work_free(lwork); 1769 return; 1770 } 1771 1772 wpa_s->p2p_listen_work = work; 1773 1774 wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL); 1775 1776 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1777 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1778 "report received Probe Request frames"); 1779 wpas_p2p_listen_work_done(wpa_s); 1780 return; 1781 } 1782 1783 wpa_s->pending_listen_freq = lwork->freq; 1784 wpa_s->pending_listen_duration = lwork->duration; 1785 1786 if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0) 1787 { 1788 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1789 "to remain on channel (%u MHz) for Listen " 1790 "state", lwork->freq); 1791 wpas_p2p_listen_work_done(wpa_s); 1792 wpa_s->pending_listen_freq = 0; 1793 return; 1794 } 1795 wpa_s->off_channel_freq = 0; 1796 wpa_s->roc_waiting_drv_freq = lwork->freq; 1797} 1798 1799 1800static int wpas_start_listen(void *ctx, unsigned int freq, 1801 unsigned int duration, 1802 const struct wpabuf *probe_resp_ie) 1803{ 1804 struct wpa_supplicant *wpa_s = ctx; 1805 struct wpas_p2p_listen_work *lwork; 1806 1807 if (wpa_s->p2p_listen_work) { 1808 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists"); 1809 return -1; 1810 } 1811 1812 lwork = os_zalloc(sizeof(*lwork)); 1813 if (lwork == NULL) 1814 return -1; 1815 lwork->freq = freq; 1816 lwork->duration = duration; 1817 if (probe_resp_ie) { 1818 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie); 1819 if (lwork->probe_resp_ie == NULL) { 1820 wpas_p2p_listen_work_free(lwork); 1821 return -1; 1822 } 1823 } 1824 1825 if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb, 1826 lwork) < 0) { 1827 wpas_p2p_listen_work_free(lwork); 1828 return -1; 1829 } 1830 1831 return 0; 1832} 1833 1834 1835static void wpas_stop_listen(void *ctx) 1836{ 1837 struct wpa_supplicant *wpa_s = ctx; 1838 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1839 wpa_drv_cancel_remain_on_channel(wpa_s); 1840 wpa_s->off_channel_freq = 0; 1841 wpa_s->roc_waiting_drv_freq = 0; 1842 } 1843 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1844 wpa_drv_probe_req_report(wpa_s, 0); 1845 wpas_p2p_listen_work_done(wpa_s); 1846} 1847 1848 1849static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1850{ 1851 struct wpa_supplicant *wpa_s = ctx; 1852 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1853} 1854 1855 1856/* 1857 * DNS Header section is used only to calculate compression pointers, so the 1858 * contents of this data does not matter, but the length needs to be reserved 1859 * in the virtual packet. 1860 */ 1861#define DNS_HEADER_LEN 12 1862 1863/* 1864 * 27-octet in-memory packet from P2P specification containing two implied 1865 * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN 1866 */ 1867#define P2P_SD_IN_MEMORY_LEN 27 1868 1869static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start, 1870 u8 **spos, const u8 *end) 1871{ 1872 while (*spos < end) { 1873 u8 val = ((*spos)[0] & 0xc0) >> 6; 1874 int len; 1875 1876 if (val == 1 || val == 2) { 1877 /* These are reserved values in RFC 1035 */ 1878 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1879 "sequence starting with 0x%x", val); 1880 return -1; 1881 } 1882 1883 if (val == 3) { 1884 u16 offset; 1885 u8 *spos_tmp; 1886 1887 /* Offset */ 1888 if (*spos + 2 > end) { 1889 wpa_printf(MSG_DEBUG, "P2P: No room for full " 1890 "DNS offset field"); 1891 return -1; 1892 } 1893 1894 offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1]; 1895 if (offset >= *spos - start) { 1896 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS " 1897 "pointer offset %u", offset); 1898 return -1; 1899 } 1900 1901 (*spos) += 2; 1902 spos_tmp = start + offset; 1903 return p2p_sd_dns_uncompress_label(upos, uend, start, 1904 &spos_tmp, 1905 *spos - 2); 1906 } 1907 1908 /* Label */ 1909 len = (*spos)[0] & 0x3f; 1910 if (len == 0) 1911 return 0; 1912 1913 (*spos)++; 1914 if (*spos + len > end) { 1915 wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " 1916 "sequence - no room for label with length " 1917 "%u", len); 1918 return -1; 1919 } 1920 1921 if (*upos + len + 2 > uend) 1922 return -2; 1923 1924 os_memcpy(*upos, *spos, len); 1925 *spos += len; 1926 *upos += len; 1927 (*upos)[0] = '.'; 1928 (*upos)++; 1929 (*upos)[0] = '\0'; 1930 } 1931 1932 return 0; 1933} 1934 1935 1936/* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet. 1937 * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is 1938 * not large enough */ 1939static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg, 1940 size_t msg_len, size_t offset) 1941{ 1942 /* 27-octet in-memory packet from P2P specification */ 1943 const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01" 1944 "\x04_udp\xC0\x11\x00\x0C\x00\x01"; 1945 u8 *tmp, *end, *spos; 1946 char *upos, *uend; 1947 int ret = 0; 1948 1949 if (buf_len < 2) 1950 return -1; 1951 if (offset > msg_len) 1952 return -1; 1953 1954 tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len); 1955 if (tmp == NULL) 1956 return -1; 1957 spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN; 1958 end = spos + msg_len; 1959 spos += offset; 1960 1961 os_memset(tmp, 0, DNS_HEADER_LEN); 1962 os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN); 1963 os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len); 1964 1965 upos = buf; 1966 uend = buf + buf_len; 1967 1968 ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end); 1969 if (ret) { 1970 os_free(tmp); 1971 return ret; 1972 } 1973 1974 if (upos == buf) { 1975 upos[0] = '.'; 1976 upos[1] = '\0'; 1977 } else if (upos[-1] == '.') 1978 upos[-1] = '\0'; 1979 1980 os_free(tmp); 1981 return 0; 1982} 1983 1984 1985static struct p2p_srv_bonjour * 1986wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1987 const struct wpabuf *query) 1988{ 1989 struct p2p_srv_bonjour *bsrv; 1990 size_t len; 1991 1992 len = wpabuf_len(query); 1993 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1994 struct p2p_srv_bonjour, list) { 1995 if (len == wpabuf_len(bsrv->query) && 1996 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1997 len) == 0) 1998 return bsrv; 1999 } 2000 return NULL; 2001} 2002 2003 2004static struct p2p_srv_upnp * 2005wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 2006 const char *service) 2007{ 2008 struct p2p_srv_upnp *usrv; 2009 2010 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 2011 struct p2p_srv_upnp, list) { 2012 if (version == usrv->version && 2013 os_strcmp(service, usrv->service) == 0) 2014 return usrv; 2015 } 2016 return NULL; 2017} 2018 2019 2020static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 2021 u8 srv_trans_id) 2022{ 2023 u8 *len_pos; 2024 2025 if (wpabuf_tailroom(resp) < 5) 2026 return; 2027 2028 /* Length (to be filled) */ 2029 len_pos = wpabuf_put(resp, 2); 2030 wpabuf_put_u8(resp, srv_proto); 2031 wpabuf_put_u8(resp, srv_trans_id); 2032 /* Status Code */ 2033 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 2034 /* Response Data: empty */ 2035 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 2036} 2037 2038 2039static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 2040 struct wpabuf *resp, u8 srv_trans_id) 2041{ 2042 struct p2p_srv_bonjour *bsrv; 2043 u8 *len_pos; 2044 2045 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 2046 2047 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 2048 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 2049 return; 2050 } 2051 2052 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 2053 struct p2p_srv_bonjour, list) { 2054 if (wpabuf_tailroom(resp) < 2055 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 2056 return; 2057 /* Length (to be filled) */ 2058 len_pos = wpabuf_put(resp, 2); 2059 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 2060 wpabuf_put_u8(resp, srv_trans_id); 2061 /* Status Code */ 2062 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 2063 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 2064 wpabuf_head(bsrv->resp), 2065 wpabuf_len(bsrv->resp)); 2066 /* Response Data */ 2067 wpabuf_put_buf(resp, bsrv->query); /* Key */ 2068 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 2069 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2070 2); 2071 } 2072} 2073 2074 2075static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query, 2076 size_t query_len) 2077{ 2078 char str_rx[256], str_srv[256]; 2079 2080 if (query_len < 3 || wpabuf_len(bsrv->query) < 3) 2081 return 0; /* Too short to include DNS Type and Version */ 2082 if (os_memcmp(query + query_len - 3, 2083 wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3, 2084 3) != 0) 2085 return 0; /* Mismatch in DNS Type or Version */ 2086 if (query_len == wpabuf_len(bsrv->query) && 2087 os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0) 2088 return 1; /* Binary match */ 2089 2090 if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3, 2091 0)) 2092 return 0; /* Failed to uncompress query */ 2093 if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv), 2094 wpabuf_head(bsrv->query), 2095 wpabuf_len(bsrv->query) - 3, 0)) 2096 return 0; /* Failed to uncompress service */ 2097 2098 return os_strcmp(str_rx, str_srv) == 0; 2099} 2100 2101 2102static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 2103 struct wpabuf *resp, u8 srv_trans_id, 2104 const u8 *query, size_t query_len) 2105{ 2106 struct p2p_srv_bonjour *bsrv; 2107 u8 *len_pos; 2108 int matches = 0; 2109 2110 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 2111 query, query_len); 2112 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 2113 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 2114 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 2115 srv_trans_id); 2116 return; 2117 } 2118 2119 if (query_len == 0) { 2120 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 2121 return; 2122 } 2123 2124 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 2125 struct p2p_srv_bonjour, list) { 2126 if (!match_bonjour_query(bsrv, query, query_len)) 2127 continue; 2128 2129 if (wpabuf_tailroom(resp) < 2130 5 + query_len + wpabuf_len(bsrv->resp)) 2131 return; 2132 2133 matches++; 2134 2135 /* Length (to be filled) */ 2136 len_pos = wpabuf_put(resp, 2); 2137 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 2138 wpabuf_put_u8(resp, srv_trans_id); 2139 2140 /* Status Code */ 2141 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 2142 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 2143 wpabuf_head(bsrv->resp), 2144 wpabuf_len(bsrv->resp)); 2145 2146 /* Response Data */ 2147 wpabuf_put_data(resp, query, query_len); /* Key */ 2148 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 2149 2150 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 2151 } 2152 2153 if (matches == 0) { 2154 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 2155 "available"); 2156 if (wpabuf_tailroom(resp) < 5) 2157 return; 2158 2159 /* Length (to be filled) */ 2160 len_pos = wpabuf_put(resp, 2); 2161 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 2162 wpabuf_put_u8(resp, srv_trans_id); 2163 2164 /* Status Code */ 2165 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 2166 /* Response Data: empty */ 2167 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2168 2); 2169 } 2170} 2171 2172 2173static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 2174 struct wpabuf *resp, u8 srv_trans_id) 2175{ 2176 struct p2p_srv_upnp *usrv; 2177 u8 *len_pos; 2178 2179 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 2180 2181 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 2182 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 2183 return; 2184 } 2185 2186 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 2187 struct p2p_srv_upnp, list) { 2188 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 2189 return; 2190 2191 /* Length (to be filled) */ 2192 len_pos = wpabuf_put(resp, 2); 2193 wpabuf_put_u8(resp, P2P_SERV_UPNP); 2194 wpabuf_put_u8(resp, srv_trans_id); 2195 2196 /* Status Code */ 2197 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 2198 /* Response Data */ 2199 wpabuf_put_u8(resp, usrv->version); 2200 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 2201 usrv->service); 2202 wpabuf_put_str(resp, usrv->service); 2203 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2204 2); 2205 } 2206} 2207 2208 2209static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 2210 struct wpabuf *resp, u8 srv_trans_id, 2211 const u8 *query, size_t query_len) 2212{ 2213 struct p2p_srv_upnp *usrv; 2214 u8 *len_pos; 2215 u8 version; 2216 char *str; 2217 int count = 0; 2218 2219 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 2220 query, query_len); 2221 2222 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 2223 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 2224 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 2225 srv_trans_id); 2226 return; 2227 } 2228 2229 if (query_len == 0) { 2230 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 2231 return; 2232 } 2233 2234 if (wpabuf_tailroom(resp) < 5) 2235 return; 2236 2237 /* Length (to be filled) */ 2238 len_pos = wpabuf_put(resp, 2); 2239 wpabuf_put_u8(resp, P2P_SERV_UPNP); 2240 wpabuf_put_u8(resp, srv_trans_id); 2241 2242 version = query[0]; 2243 str = os_malloc(query_len); 2244 if (str == NULL) 2245 return; 2246 os_memcpy(str, query + 1, query_len - 1); 2247 str[query_len - 1] = '\0'; 2248 2249 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 2250 struct p2p_srv_upnp, list) { 2251 if (version != usrv->version) 2252 continue; 2253 2254 if (os_strcmp(str, "ssdp:all") != 0 && 2255 os_strstr(usrv->service, str) == NULL) 2256 continue; 2257 2258 if (wpabuf_tailroom(resp) < 2) 2259 break; 2260 if (count == 0) { 2261 /* Status Code */ 2262 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 2263 /* Response Data */ 2264 wpabuf_put_u8(resp, version); 2265 } else 2266 wpabuf_put_u8(resp, ','); 2267 2268 count++; 2269 2270 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 2271 usrv->service); 2272 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 2273 break; 2274 wpabuf_put_str(resp, usrv->service); 2275 } 2276 os_free(str); 2277 2278 if (count == 0) { 2279 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 2280 "available"); 2281 /* Status Code */ 2282 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 2283 /* Response Data: empty */ 2284 } 2285 2286 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 2287} 2288 2289 2290#ifdef CONFIG_WIFI_DISPLAY 2291static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s, 2292 struct wpabuf *resp, u8 srv_trans_id, 2293 const u8 *query, size_t query_len) 2294{ 2295 const u8 *pos; 2296 u8 role; 2297 u8 *len_pos; 2298 2299 wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len); 2300 2301 if (!wpa_s->global->wifi_display) { 2302 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available"); 2303 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY, 2304 srv_trans_id); 2305 return; 2306 } 2307 2308 if (query_len < 1) { 2309 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device " 2310 "Role"); 2311 return; 2312 } 2313 2314 if (wpabuf_tailroom(resp) < 5) 2315 return; 2316 2317 pos = query; 2318 role = *pos++; 2319 wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role); 2320 2321 /* TODO: role specific handling */ 2322 2323 /* Length (to be filled) */ 2324 len_pos = wpabuf_put(resp, 2); 2325 wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY); 2326 wpabuf_put_u8(resp, srv_trans_id); 2327 wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */ 2328 2329 while (pos < query + query_len) { 2330 if (*pos < MAX_WFD_SUBELEMS && 2331 wpa_s->global->wfd_subelem[*pos] && 2332 wpabuf_tailroom(resp) >= 2333 wpabuf_len(wpa_s->global->wfd_subelem[*pos])) { 2334 wpa_printf(MSG_DEBUG, "P2P: Add WSD response " 2335 "subelement %u", *pos); 2336 wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]); 2337 } 2338 pos++; 2339 } 2340 2341 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 2342} 2343#endif /* CONFIG_WIFI_DISPLAY */ 2344 2345 2346static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 2347 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 2348{ 2349 struct wpa_supplicant *wpa_s = ctx; 2350 const u8 *pos = tlvs; 2351 const u8 *end = tlvs + tlvs_len; 2352 const u8 *tlv_end; 2353 u16 slen; 2354 struct wpabuf *resp; 2355 u8 srv_proto, srv_trans_id; 2356 size_t buf_len; 2357 char *buf; 2358 2359 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 2360 tlvs, tlvs_len); 2361 buf_len = 2 * tlvs_len + 1; 2362 buf = os_malloc(buf_len); 2363 if (buf) { 2364 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 2365 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 2366 MACSTR " %u %u %s", 2367 freq, MAC2STR(sa), dialog_token, update_indic, 2368 buf); 2369 os_free(buf); 2370 } 2371 2372 if (wpa_s->p2p_sd_over_ctrl_iface) { 2373 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 2374 update_indic, tlvs, tlvs_len); 2375 return; /* to be processed by an external program */ 2376 } 2377 2378 resp = wpabuf_alloc(10000); 2379 if (resp == NULL) 2380 return; 2381 2382 while (pos + 1 < end) { 2383 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 2384 slen = WPA_GET_LE16(pos); 2385 pos += 2; 2386 if (pos + slen > end || slen < 2) { 2387 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 2388 "length"); 2389 wpabuf_free(resp); 2390 return; 2391 } 2392 tlv_end = pos + slen; 2393 2394 srv_proto = *pos++; 2395 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 2396 srv_proto); 2397 srv_trans_id = *pos++; 2398 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 2399 srv_trans_id); 2400 2401 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 2402 pos, tlv_end - pos); 2403 2404 2405 if (wpa_s->force_long_sd) { 2406 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 2407 "response"); 2408 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 2409 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 2410 goto done; 2411 } 2412 2413 switch (srv_proto) { 2414 case P2P_SERV_ALL_SERVICES: 2415 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 2416 "for all services"); 2417 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 2418 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 2419 wpa_printf(MSG_DEBUG, "P2P: No service " 2420 "discovery protocols available"); 2421 wpas_sd_add_proto_not_avail( 2422 resp, P2P_SERV_ALL_SERVICES, 2423 srv_trans_id); 2424 break; 2425 } 2426 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 2427 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 2428 break; 2429 case P2P_SERV_BONJOUR: 2430 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 2431 pos, tlv_end - pos); 2432 break; 2433 case P2P_SERV_UPNP: 2434 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 2435 pos, tlv_end - pos); 2436 break; 2437#ifdef CONFIG_WIFI_DISPLAY 2438 case P2P_SERV_WIFI_DISPLAY: 2439 wpas_sd_req_wfd(wpa_s, resp, srv_trans_id, 2440 pos, tlv_end - pos); 2441 break; 2442#endif /* CONFIG_WIFI_DISPLAY */ 2443 default: 2444 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 2445 "protocol %u", srv_proto); 2446 wpas_sd_add_proto_not_avail(resp, srv_proto, 2447 srv_trans_id); 2448 break; 2449 } 2450 2451 pos = tlv_end; 2452 } 2453 2454done: 2455 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 2456 update_indic, tlvs, tlvs_len); 2457 2458 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 2459 2460 wpabuf_free(resp); 2461} 2462 2463 2464static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 2465 const u8 *tlvs, size_t tlvs_len) 2466{ 2467 struct wpa_supplicant *wpa_s = ctx; 2468 const u8 *pos = tlvs; 2469 const u8 *end = tlvs + tlvs_len; 2470 const u8 *tlv_end; 2471 u16 slen; 2472 size_t buf_len; 2473 char *buf; 2474 2475 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 2476 tlvs, tlvs_len); 2477 if (tlvs_len > 1500) { 2478 /* TODO: better way for handling this */ 2479 wpa_msg_ctrl(wpa_s, MSG_INFO, 2480 P2P_EVENT_SERV_DISC_RESP MACSTR 2481 " %u <long response: %u bytes>", 2482 MAC2STR(sa), update_indic, 2483 (unsigned int) tlvs_len); 2484 } else { 2485 buf_len = 2 * tlvs_len + 1; 2486 buf = os_malloc(buf_len); 2487 if (buf) { 2488 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 2489 wpa_msg_ctrl(wpa_s, MSG_INFO, 2490 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 2491 MAC2STR(sa), update_indic, buf); 2492 os_free(buf); 2493 } 2494 } 2495 2496 while (pos < end) { 2497 u8 srv_proto, srv_trans_id, status; 2498 2499 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 2500 slen = WPA_GET_LE16(pos); 2501 pos += 2; 2502 if (pos + slen > end || slen < 3) { 2503 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 2504 "length"); 2505 return; 2506 } 2507 tlv_end = pos + slen; 2508 2509 srv_proto = *pos++; 2510 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 2511 srv_proto); 2512 srv_trans_id = *pos++; 2513 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 2514 srv_trans_id); 2515 status = *pos++; 2516 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 2517 status); 2518 2519 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 2520 pos, tlv_end - pos); 2521 2522 pos = tlv_end; 2523 } 2524 2525 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 2526} 2527 2528 2529u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 2530 const struct wpabuf *tlvs) 2531{ 2532 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2533 return 0; 2534 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 2535} 2536 2537 2538u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 2539 u8 version, const char *query) 2540{ 2541 struct wpabuf *tlvs; 2542 u64 ret; 2543 2544 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 2545 if (tlvs == NULL) 2546 return 0; 2547 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 2548 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 2549 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 2550 wpabuf_put_u8(tlvs, version); 2551 wpabuf_put_str(tlvs, query); 2552 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 2553 wpabuf_free(tlvs); 2554 return ret; 2555} 2556 2557 2558#ifdef CONFIG_WIFI_DISPLAY 2559 2560static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst, 2561 const struct wpabuf *tlvs) 2562{ 2563 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2564 return 0; 2565 return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs); 2566} 2567 2568 2569#define MAX_WFD_SD_SUBELEMS 20 2570 2571static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role, 2572 const char *subelems) 2573{ 2574 u8 *len; 2575 const char *pos; 2576 int val; 2577 int count = 0; 2578 2579 len = wpabuf_put(tlvs, 2); 2580 wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */ 2581 wpabuf_put_u8(tlvs, id); /* Service Transaction ID */ 2582 2583 wpabuf_put_u8(tlvs, role); 2584 2585 pos = subelems; 2586 while (*pos) { 2587 val = atoi(pos); 2588 if (val >= 0 && val < 256) { 2589 wpabuf_put_u8(tlvs, val); 2590 count++; 2591 if (count == MAX_WFD_SD_SUBELEMS) 2592 break; 2593 } 2594 pos = os_strchr(pos + 1, ','); 2595 if (pos == NULL) 2596 break; 2597 pos++; 2598 } 2599 2600 WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2); 2601} 2602 2603 2604u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s, 2605 const u8 *dst, const char *role) 2606{ 2607 struct wpabuf *tlvs; 2608 u64 ret; 2609 const char *subelems; 2610 u8 id = 1; 2611 2612 subelems = os_strchr(role, ' '); 2613 if (subelems == NULL) 2614 return 0; 2615 subelems++; 2616 2617 tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS)); 2618 if (tlvs == NULL) 2619 return 0; 2620 2621 if (os_strstr(role, "[source]")) 2622 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems); 2623 if (os_strstr(role, "[pri-sink]")) 2624 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems); 2625 if (os_strstr(role, "[sec-sink]")) 2626 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems); 2627 if (os_strstr(role, "[source+sink]")) 2628 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems); 2629 2630 ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs); 2631 wpabuf_free(tlvs); 2632 return ret; 2633} 2634 2635#endif /* CONFIG_WIFI_DISPLAY */ 2636 2637 2638int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 2639{ 2640 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2641 return -1; 2642 return p2p_sd_cancel_request(wpa_s->global->p2p, 2643 (void *) (uintptr_t) req); 2644} 2645 2646 2647void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 2648 const u8 *dst, u8 dialog_token, 2649 const struct wpabuf *resp_tlvs) 2650{ 2651 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2652 return; 2653 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 2654 resp_tlvs); 2655} 2656 2657 2658void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 2659{ 2660 if (wpa_s->global->p2p) 2661 p2p_sd_service_update(wpa_s->global->p2p); 2662} 2663 2664 2665static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 2666{ 2667 dl_list_del(&bsrv->list); 2668 wpabuf_free(bsrv->query); 2669 wpabuf_free(bsrv->resp); 2670 os_free(bsrv); 2671} 2672 2673 2674static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 2675{ 2676 dl_list_del(&usrv->list); 2677 os_free(usrv->service); 2678 os_free(usrv); 2679} 2680 2681 2682void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 2683{ 2684 struct p2p_srv_bonjour *bsrv, *bn; 2685 struct p2p_srv_upnp *usrv, *un; 2686 2687 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 2688 struct p2p_srv_bonjour, list) 2689 wpas_p2p_srv_bonjour_free(bsrv); 2690 2691 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 2692 struct p2p_srv_upnp, list) 2693 wpas_p2p_srv_upnp_free(usrv); 2694 2695 wpas_p2p_sd_service_update(wpa_s); 2696} 2697 2698 2699int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 2700 struct wpabuf *query, struct wpabuf *resp) 2701{ 2702 struct p2p_srv_bonjour *bsrv; 2703 2704 bsrv = os_zalloc(sizeof(*bsrv)); 2705 if (bsrv == NULL) 2706 return -1; 2707 bsrv->query = query; 2708 bsrv->resp = resp; 2709 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 2710 2711 wpas_p2p_sd_service_update(wpa_s); 2712 return 0; 2713} 2714 2715 2716int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 2717 const struct wpabuf *query) 2718{ 2719 struct p2p_srv_bonjour *bsrv; 2720 2721 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 2722 if (bsrv == NULL) 2723 return -1; 2724 wpas_p2p_srv_bonjour_free(bsrv); 2725 wpas_p2p_sd_service_update(wpa_s); 2726 return 0; 2727} 2728 2729 2730int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 2731 const char *service) 2732{ 2733 struct p2p_srv_upnp *usrv; 2734 2735 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 2736 return 0; /* Already listed */ 2737 usrv = os_zalloc(sizeof(*usrv)); 2738 if (usrv == NULL) 2739 return -1; 2740 usrv->version = version; 2741 usrv->service = os_strdup(service); 2742 if (usrv->service == NULL) { 2743 os_free(usrv); 2744 return -1; 2745 } 2746 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 2747 2748 wpas_p2p_sd_service_update(wpa_s); 2749 return 0; 2750} 2751 2752 2753int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 2754 const char *service) 2755{ 2756 struct p2p_srv_upnp *usrv; 2757 2758 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 2759 if (usrv == NULL) 2760 return -1; 2761 wpas_p2p_srv_upnp_free(usrv); 2762 wpas_p2p_sd_service_update(wpa_s); 2763 return 0; 2764} 2765 2766 2767static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 2768 const u8 *peer, const char *params, 2769 unsigned int generated_pin) 2770{ 2771 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR 2772 " %08d%s", MAC2STR(peer), generated_pin, params); 2773} 2774 2775 2776static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 2777 const u8 *peer, const char *params) 2778{ 2779 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR 2780 "%s", MAC2STR(peer), params); 2781} 2782 2783 2784static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 2785 const u8 *dev_addr, const u8 *pri_dev_type, 2786 const char *dev_name, u16 supp_config_methods, 2787 u8 dev_capab, u8 group_capab, const u8 *group_id, 2788 size_t group_id_len) 2789{ 2790 struct wpa_supplicant *wpa_s = ctx; 2791 char devtype[WPS_DEV_TYPE_BUFSIZE]; 2792 char params[300]; 2793 u8 empty_dev_type[8]; 2794 unsigned int generated_pin = 0; 2795 struct wpa_supplicant *group = NULL; 2796 2797 if (group_id) { 2798 for (group = wpa_s->global->ifaces; group; group = group->next) 2799 { 2800 struct wpa_ssid *s = group->current_ssid; 2801 if (s != NULL && 2802 s->mode == WPAS_MODE_P2P_GO && 2803 group_id_len - ETH_ALEN == s->ssid_len && 2804 os_memcmp(group_id + ETH_ALEN, s->ssid, 2805 s->ssid_len) == 0) 2806 break; 2807 } 2808 } 2809 2810 if (pri_dev_type == NULL) { 2811 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 2812 pri_dev_type = empty_dev_type; 2813 } 2814 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 2815 " pri_dev_type=%s name='%s' config_methods=0x%x " 2816 "dev_capab=0x%x group_capab=0x%x%s%s", 2817 MAC2STR(dev_addr), 2818 wps_dev_type_bin2str(pri_dev_type, devtype, 2819 sizeof(devtype)), 2820 dev_name, supp_config_methods, dev_capab, group_capab, 2821 group ? " group=" : "", 2822 group ? group->ifname : ""); 2823 params[sizeof(params) - 1] = '\0'; 2824 2825 if (config_methods & WPS_CONFIG_DISPLAY) { 2826 generated_pin = wps_generate_pin(); 2827 wpas_prov_disc_local_display(wpa_s, peer, params, 2828 generated_pin); 2829 } else if (config_methods & WPS_CONFIG_KEYPAD) 2830 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2831 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2832 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ 2833 MACSTR "%s", MAC2STR(peer), params); 2834 2835 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 2836 P2P_PROV_DISC_SUCCESS, 2837 config_methods, generated_pin); 2838} 2839 2840 2841static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 2842{ 2843 struct wpa_supplicant *wpa_s = ctx; 2844 unsigned int generated_pin = 0; 2845 char params[20]; 2846 2847 if (wpa_s->pending_pd_before_join && 2848 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 2849 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 2850 wpa_s->pending_pd_before_join = 0; 2851 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2852 "join-existing-group operation"); 2853 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2854 return; 2855 } 2856 2857 if (wpa_s->pending_pd_use == AUTO_PD_JOIN || 2858 wpa_s->pending_pd_use == AUTO_PD_GO_NEG) 2859 os_snprintf(params, sizeof(params), " peer_go=%d", 2860 wpa_s->pending_pd_use == AUTO_PD_JOIN); 2861 else 2862 params[0] = '\0'; 2863 2864 if (config_methods & WPS_CONFIG_DISPLAY) 2865 wpas_prov_disc_local_keypad(wpa_s, peer, params); 2866 else if (config_methods & WPS_CONFIG_KEYPAD) { 2867 generated_pin = wps_generate_pin(); 2868 wpas_prov_disc_local_display(wpa_s, peer, params, 2869 generated_pin); 2870 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 2871 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP 2872 MACSTR "%s", MAC2STR(peer), params); 2873 2874 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2875 P2P_PROV_DISC_SUCCESS, 2876 config_methods, generated_pin); 2877} 2878 2879 2880static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 2881 enum p2p_prov_disc_status status) 2882{ 2883 struct wpa_supplicant *wpa_s = ctx; 2884 2885 if (wpa_s->p2p_fallback_to_go_neg) { 2886 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " 2887 "failed - fall back to GO Negotiation"); 2888 wpas_p2p_fallback_to_go_neg(wpa_s, 0); 2889 return; 2890 } 2891 2892 if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { 2893 wpa_s->pending_pd_before_join = 0; 2894 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 2895 "join-existing-group operation (no ACK for PD " 2896 "Req attempts)"); 2897 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 2898 return; 2899 } 2900 2901 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE 2902 " p2p_dev_addr=" MACSTR " status=%d", 2903 MAC2STR(peer), status); 2904 2905 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 2906 status, 0, 0); 2907} 2908 2909 2910static int freq_included(const struct p2p_channels *channels, unsigned int freq) 2911{ 2912 if (channels == NULL) 2913 return 1; /* Assume no restrictions */ 2914 return p2p_channels_includes_freq(channels, freq); 2915 2916} 2917 2918 2919static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 2920 const u8 *go_dev_addr, const u8 *ssid, 2921 size_t ssid_len, int *go, u8 *group_bssid, 2922 int *force_freq, int persistent_group, 2923 const struct p2p_channels *channels, 2924 int dev_pw_id) 2925{ 2926 struct wpa_supplicant *wpa_s = ctx; 2927 struct wpa_ssid *s; 2928 int res; 2929 struct wpa_supplicant *grp; 2930 2931 if (!persistent_group) { 2932 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2933 " to join an active group (SSID: %s)", 2934 MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len)); 2935 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2936 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 2937 == 0 || 2938 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 2939 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 2940 "authorized invitation"); 2941 goto accept_inv; 2942 } 2943 2944#ifdef CONFIG_WPS_NFC 2945 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled && 2946 dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) { 2947 wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag"); 2948 wpa_s->parent->p2p_wps_method = WPS_NFC; 2949 wpa_s->parent->pending_join_wps_method = WPS_NFC; 2950 os_memcpy(wpa_s->parent->pending_join_dev_addr, 2951 go_dev_addr, ETH_ALEN); 2952 os_memcpy(wpa_s->parent->pending_join_iface_addr, 2953 bssid, ETH_ALEN); 2954 goto accept_inv; 2955 } 2956#endif /* CONFIG_WPS_NFC */ 2957 2958 /* 2959 * Do not accept the invitation automatically; notify user and 2960 * request approval. 2961 */ 2962 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2963 } 2964 2965 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 2966 if (grp) { 2967 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 2968 "running persistent group"); 2969 if (*go) 2970 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 2971 goto accept_inv; 2972 } 2973 2974 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 2975 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) { 2976 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated " 2977 "invitation to re-invoke a persistent group"); 2978 } else if (!wpa_s->conf->persistent_reconnect) 2979 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 2980 2981 for (s = wpa_s->conf->ssid; s; s = s->next) { 2982 if (s->disabled == 2 && 2983 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 2984 s->ssid_len == ssid_len && 2985 os_memcmp(ssid, s->ssid, ssid_len) == 0) 2986 break; 2987 } 2988 2989 if (!s) { 2990 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 2991 " requested reinvocation of an unknown group", 2992 MAC2STR(sa)); 2993 return P2P_SC_FAIL_UNKNOWN_GROUP; 2994 } 2995 2996 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 2997 *go = 1; 2998 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2999 wpa_printf(MSG_DEBUG, "P2P: The only available " 3000 "interface is already in use - reject " 3001 "invitation"); 3002 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 3003 } 3004 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 3005 } else if (s->mode == WPAS_MODE_P2P_GO) { 3006 *go = 1; 3007 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 3008 { 3009 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 3010 "interface address for the group"); 3011 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 3012 } 3013 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 3014 ETH_ALEN); 3015 } 3016 3017accept_inv: 3018 wpas_p2p_set_own_freq_preference(wpa_s, 0); 3019 3020 /* Get one of the frequencies currently in use */ 3021 if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) { 3022 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces"); 3023 wpas_p2p_set_own_freq_preference(wpa_s, res); 3024 3025 if (wpa_s->num_multichan_concurrent < 2 || 3026 wpas_p2p_num_unused_channels(wpa_s) < 1) { 3027 wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces"); 3028 *force_freq = res; 3029 } 3030 } 3031 3032 if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 && 3033 wpas_p2p_num_unused_channels(wpa_s) > 0) { 3034 if (*go == 0) { 3035 /* We are the client */ 3036 wpa_printf(MSG_DEBUG, "P2P: Peer was found to be " 3037 "running a GO but we are capable of MCC, " 3038 "figure out the best channel to use"); 3039 *force_freq = 0; 3040 } else if (!freq_included(channels, *force_freq)) { 3041 /* We are the GO, and *force_freq is not in the 3042 * intersection */ 3043 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 3044 "in intersection but we are capable of MCC, " 3045 "figure out the best channel to use", 3046 *force_freq); 3047 *force_freq = 0; 3048 } 3049 } 3050 3051 return P2P_SC_SUCCESS; 3052} 3053 3054 3055static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 3056 const u8 *ssid, size_t ssid_len, 3057 const u8 *go_dev_addr, u8 status, 3058 int op_freq) 3059{ 3060 struct wpa_supplicant *wpa_s = ctx; 3061 struct wpa_ssid *s; 3062 3063 for (s = wpa_s->conf->ssid; s; s = s->next) { 3064 if (s->disabled == 2 && 3065 s->ssid_len == ssid_len && 3066 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3067 break; 3068 } 3069 3070 if (status == P2P_SC_SUCCESS) { 3071 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3072 " was accepted; op_freq=%d MHz, SSID=%s", 3073 MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len)); 3074 if (s) { 3075 int go = s->mode == WPAS_MODE_P2P_GO; 3076 wpas_p2p_group_add_persistent( 3077 wpa_s, s, go, 0, op_freq, 0, 0, NULL, 3078 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0); 3079 } else if (bssid) { 3080 wpa_s->user_initiated_pd = 0; 3081 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 3082 wpa_s->p2p_wps_method, 0, op_freq, 3083 ssid, ssid_len); 3084 } 3085 return; 3086 } 3087 3088 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3089 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 3090 " was rejected (status %u)", MAC2STR(sa), status); 3091 return; 3092 } 3093 3094 if (!s) { 3095 if (bssid) { 3096 wpa_msg_global(wpa_s, MSG_INFO, 3097 P2P_EVENT_INVITATION_RECEIVED 3098 "sa=" MACSTR " go_dev_addr=" MACSTR 3099 " bssid=" MACSTR " unknown-network", 3100 MAC2STR(sa), MAC2STR(go_dev_addr), 3101 MAC2STR(bssid)); 3102 } else { 3103 wpa_msg_global(wpa_s, MSG_INFO, 3104 P2P_EVENT_INVITATION_RECEIVED 3105 "sa=" MACSTR " go_dev_addr=" MACSTR 3106 " unknown-network", 3107 MAC2STR(sa), MAC2STR(go_dev_addr)); 3108 } 3109 return; 3110 } 3111 3112 if (s->mode == WPAS_MODE_P2P_GO && op_freq) { 3113 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3114 "sa=" MACSTR " persistent=%d freq=%d", 3115 MAC2STR(sa), s->id, op_freq); 3116 } else { 3117 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 3118 "sa=" MACSTR " persistent=%d", 3119 MAC2STR(sa), s->id); 3120 } 3121} 3122 3123 3124static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s, 3125 struct wpa_ssid *ssid, 3126 const u8 *peer, int inv) 3127{ 3128 size_t i; 3129 3130 if (ssid == NULL) 3131 return; 3132 3133 for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) { 3134 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer, 3135 ETH_ALEN) == 0) 3136 break; 3137 } 3138 if (i >= ssid->num_p2p_clients) { 3139 if (ssid->mode != WPAS_MODE_P2P_GO && 3140 os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) { 3141 wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d " 3142 "due to invitation result", ssid->id); 3143 wpas_notify_network_removed(wpa_s, ssid); 3144 wpa_config_remove_network(wpa_s->conf, ssid->id); 3145 return; 3146 } 3147 return; /* Peer not found in client list */ 3148 } 3149 3150 wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent " 3151 "group %d client list%s", 3152 MAC2STR(peer), ssid->id, 3153 inv ? " due to invitation result" : ""); 3154 os_memmove(ssid->p2p_client_list + i * ETH_ALEN, 3155 ssid->p2p_client_list + (i + 1) * ETH_ALEN, 3156 (ssid->num_p2p_clients - i - 1) * ETH_ALEN); 3157 ssid->num_p2p_clients--; 3158 if (wpa_s->parent->conf->update_config && 3159 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 3160 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 3161} 3162 3163 3164static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s, 3165 const u8 *peer) 3166{ 3167 struct wpa_ssid *ssid; 3168 3169 wpa_s = wpa_s->global->p2p_invite_group; 3170 if (wpa_s == NULL) 3171 return; /* No known invitation group */ 3172 ssid = wpa_s->current_ssid; 3173 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 3174 !ssid->p2p_persistent_group) 3175 return; /* Not operating as a GO in persistent group */ 3176 ssid = wpas_p2p_get_persistent(wpa_s->parent, peer, 3177 ssid->ssid, ssid->ssid_len); 3178 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3179} 3180 3181 3182static void wpas_invitation_result(void *ctx, int status, const u8 *bssid, 3183 const struct p2p_channels *channels, 3184 const u8 *peer, int neg_freq, 3185 int peer_oper_freq) 3186{ 3187 struct wpa_supplicant *wpa_s = ctx; 3188 struct wpa_ssid *ssid; 3189 int freq; 3190 3191 if (bssid) { 3192 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3193 "status=%d " MACSTR, 3194 status, MAC2STR(bssid)); 3195 } else { 3196 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 3197 "status=%d ", status); 3198 } 3199 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 3200 3201 wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR, 3202 status, MAC2STR(peer)); 3203 if (wpa_s->pending_invite_ssid_id == -1) { 3204 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) 3205 wpas_remove_persistent_client(wpa_s, peer); 3206 return; /* Invitation to active group */ 3207 } 3208 3209 if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 3210 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another " 3211 "invitation exchange to indicate readiness for " 3212 "re-invocation"); 3213 } 3214 3215 if (status != P2P_SC_SUCCESS) { 3216 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) { 3217 ssid = wpa_config_get_network( 3218 wpa_s->conf, wpa_s->pending_invite_ssid_id); 3219 wpas_remove_persistent_peer(wpa_s, ssid, peer, 1); 3220 } 3221 wpas_p2p_remove_pending_group_interface(wpa_s); 3222 return; 3223 } 3224 3225 ssid = wpa_config_get_network(wpa_s->conf, 3226 wpa_s->pending_invite_ssid_id); 3227 if (ssid == NULL) { 3228 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 3229 "data matching with invitation"); 3230 return; 3231 } 3232 3233 /* 3234 * The peer could have missed our ctrl::ack frame for Invitation 3235 * Response and continue retransmitting the frame. To reduce the 3236 * likelihood of the peer not getting successful TX status for the 3237 * Invitation Response frame, wait a short time here before starting 3238 * the persistent group so that we will remain on the current channel to 3239 * acknowledge any possible retransmission from the peer. 3240 */ 3241 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " 3242 "starting persistent group"); 3243 os_sleep(0, 50000); 3244 3245 if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO && 3246 freq_included(channels, neg_freq)) 3247 freq = neg_freq; 3248 else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO && 3249 freq_included(channels, peer_oper_freq)) 3250 freq = peer_oper_freq; 3251 else 3252 freq = 0; 3253 3254 wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s", 3255 freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3256 wpas_p2p_group_add_persistent(wpa_s, ssid, 3257 ssid->mode == WPAS_MODE_P2P_GO, 3258 wpa_s->p2p_persistent_go_freq, 3259 freq, 3260 wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht, 3261 channels, 3262 ssid->mode == WPAS_MODE_P2P_GO ? 3263 P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 3264 0); 3265} 3266 3267 3268static int wpas_p2p_disallowed_freq(struct wpa_global *global, 3269 unsigned int freq) 3270{ 3271 if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq)) 3272 return 1; 3273 return freq_range_list_includes(&global->p2p_disallow_freq, freq); 3274} 3275 3276 3277static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) 3278{ 3279 reg->channel[reg->channels] = chan; 3280 reg->channels++; 3281} 3282 3283 3284static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 3285 struct p2p_channels *chan, 3286 struct p2p_channels *cli_chan) 3287{ 3288 int i, cla = 0; 3289 3290 os_memset(cli_chan, 0, sizeof(*cli_chan)); 3291 3292 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 3293 "band"); 3294 3295 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 3296 chan->reg_class[cla].reg_class = 81; 3297 chan->reg_class[cla].channels = 0; 3298 for (i = 0; i < 11; i++) { 3299 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) 3300 wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); 3301 } 3302 if (chan->reg_class[cla].channels) 3303 cla++; 3304 3305 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 3306 "band"); 3307 3308 /* Operating class 115 - 5 GHz, channels 36-48 */ 3309 chan->reg_class[cla].reg_class = 115; 3310 chan->reg_class[cla].channels = 0; 3311 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) 3312 wpas_p2p_add_chan(&chan->reg_class[cla], 36); 3313 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) 3314 wpas_p2p_add_chan(&chan->reg_class[cla], 40); 3315 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) 3316 wpas_p2p_add_chan(&chan->reg_class[cla], 44); 3317 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) 3318 wpas_p2p_add_chan(&chan->reg_class[cla], 48); 3319 if (chan->reg_class[cla].channels) 3320 cla++; 3321 3322 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 3323 "band"); 3324 3325 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 3326 chan->reg_class[cla].reg_class = 124; 3327 chan->reg_class[cla].channels = 0; 3328 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) 3329 wpas_p2p_add_chan(&chan->reg_class[cla], 149); 3330 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) 3331 wpas_p2p_add_chan(&chan->reg_class[cla], 153); 3332 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) 3333 wpas_p2p_add_chan(&chan->reg_class[cla], 157); 3334 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) 3335 wpas_p2p_add_chan(&chan->reg_class[cla], 161); 3336 if (chan->reg_class[cla].channels) 3337 cla++; 3338 3339 chan->reg_classes = cla; 3340 return 0; 3341} 3342 3343 3344static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 3345 u16 num_modes, 3346 enum hostapd_hw_mode mode) 3347{ 3348 u16 i; 3349 3350 for (i = 0; i < num_modes; i++) { 3351 if (modes[i].mode == mode) 3352 return &modes[i]; 3353 } 3354 3355 return NULL; 3356} 3357 3358 3359enum chan_allowed { 3360 NOT_ALLOWED, PASSIVE_ONLY, ALLOWED 3361}; 3362 3363static int has_channel(struct wpa_global *global, 3364 struct hostapd_hw_modes *mode, u8 chan, int *flags) 3365{ 3366 int i; 3367 unsigned int freq; 3368 3369 freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + 3370 chan * 5; 3371 if (wpas_p2p_disallowed_freq(global, freq)) 3372 return NOT_ALLOWED; 3373 3374 for (i = 0; i < mode->num_channels; i++) { 3375 if (mode->channels[i].chan == chan) { 3376 if (flags) 3377 *flags = mode->channels[i].flag; 3378 if (mode->channels[i].flag & 3379 (HOSTAPD_CHAN_DISABLED | 3380 HOSTAPD_CHAN_RADAR)) 3381 return NOT_ALLOWED; 3382 if (mode->channels[i].flag & 3383 (HOSTAPD_CHAN_PASSIVE_SCAN | 3384 HOSTAPD_CHAN_NO_IBSS)) 3385 return PASSIVE_ONLY; 3386 return ALLOWED; 3387 } 3388 } 3389 3390 return NOT_ALLOWED; 3391} 3392 3393 3394struct p2p_oper_class_map { 3395 enum hostapd_hw_mode mode; 3396 u8 op_class; 3397 u8 min_chan; 3398 u8 max_chan; 3399 u8 inc; 3400 enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw; 3401}; 3402 3403static struct p2p_oper_class_map op_class[] = { 3404 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 3405#if 0 /* Do not enable HT40 on 2 GHz for now */ 3406 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 3407 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 3408#endif 3409 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 3410 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 3411 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 3412 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 3413 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 3414 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 3415 3416 /* 3417 * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center 3418 * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of 3419 * 80 MHz, but currently use the following definition for simplicity 3420 * (these center frequencies are not actual channels, which makes 3421 * has_channel() fail). wpas_p2p_verify_80mhz() should take care of 3422 * removing invalid channels. 3423 */ 3424 { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 }, 3425 { -1, 0, 0, 0, 0, BW20 } 3426}; 3427 3428 3429static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s, 3430 struct hostapd_hw_modes *mode, 3431 u8 channel) 3432{ 3433 u8 center_channels[] = { 42, 58, 106, 122, 138, 155 }; 3434 unsigned int i; 3435 3436 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 3437 return 0; 3438 3439 for (i = 0; i < ARRAY_SIZE(center_channels); i++) 3440 /* 3441 * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48), 3442 * so the center channel is 6 channels away from the start/end. 3443 */ 3444 if (channel >= center_channels[i] - 6 && 3445 channel <= center_channels[i] + 6) 3446 return center_channels[i]; 3447 3448 return 0; 3449} 3450 3451 3452static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s, 3453 struct hostapd_hw_modes *mode, 3454 u8 channel, u8 bw) 3455{ 3456 u8 center_chan; 3457 int i, flags; 3458 enum chan_allowed res, ret = ALLOWED; 3459 3460 center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3461 if (!center_chan) 3462 return NOT_ALLOWED; 3463 if (center_chan >= 58 && center_chan <= 138) 3464 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */ 3465 3466 /* check all the channels are available */ 3467 for (i = 0; i < 4; i++) { 3468 int adj_chan = center_chan - 6 + i * 4; 3469 3470 res = has_channel(wpa_s->global, mode, adj_chan, &flags); 3471 if (res == NOT_ALLOWED) 3472 return NOT_ALLOWED; 3473 if (res == PASSIVE_ONLY) 3474 ret = PASSIVE_ONLY; 3475 3476 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70)) 3477 return NOT_ALLOWED; 3478 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50)) 3479 return NOT_ALLOWED; 3480 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30)) 3481 return NOT_ALLOWED; 3482 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10)) 3483 return NOT_ALLOWED; 3484 } 3485 3486 return ret; 3487} 3488 3489 3490static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, 3491 struct hostapd_hw_modes *mode, 3492 u8 channel, u8 bw) 3493{ 3494 int flag = 0; 3495 enum chan_allowed res, res2; 3496 3497 res2 = res = has_channel(wpa_s->global, mode, channel, &flag); 3498 if (bw == BW40MINUS) { 3499 if (!(flag & HOSTAPD_CHAN_HT40MINUS)) 3500 return NOT_ALLOWED; 3501 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL); 3502 } else if (bw == BW40PLUS) { 3503 if (!(flag & HOSTAPD_CHAN_HT40PLUS)) 3504 return NOT_ALLOWED; 3505 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL); 3506 } else if (bw == BW80) { 3507 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw); 3508 } 3509 3510 if (res == NOT_ALLOWED || res2 == NOT_ALLOWED) 3511 return NOT_ALLOWED; 3512 if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY) 3513 return PASSIVE_ONLY; 3514 return res; 3515} 3516 3517 3518static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 3519 struct p2p_channels *chan, 3520 struct p2p_channels *cli_chan) 3521{ 3522 struct hostapd_hw_modes *mode; 3523 int cla, op, cli_cla; 3524 3525 if (wpa_s->hw.modes == NULL) { 3526 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 3527 "of all supported channels; assume dualband " 3528 "support"); 3529 return wpas_p2p_default_channels(wpa_s, chan, cli_chan); 3530 } 3531 3532 cla = cli_cla = 0; 3533 3534 for (op = 0; op_class[op].op_class; op++) { 3535 struct p2p_oper_class_map *o = &op_class[op]; 3536 u8 ch; 3537 struct p2p_reg_class *reg = NULL, *cli_reg = NULL; 3538 3539 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 3540 if (mode == NULL) 3541 continue; 3542 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3543 enum chan_allowed res; 3544 res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3545 if (res == ALLOWED) { 3546 if (reg == NULL) { 3547 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u", 3548 o->op_class); 3549 reg = &chan->reg_class[cla]; 3550 cla++; 3551 reg->reg_class = o->op_class; 3552 } 3553 reg->channel[reg->channels] = ch; 3554 reg->channels++; 3555 } else if (res == PASSIVE_ONLY && 3556 wpa_s->conf->p2p_add_cli_chan) { 3557 if (cli_reg == NULL) { 3558 wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)", 3559 o->op_class); 3560 cli_reg = &cli_chan->reg_class[cli_cla]; 3561 cli_cla++; 3562 cli_reg->reg_class = o->op_class; 3563 } 3564 cli_reg->channel[cli_reg->channels] = ch; 3565 cli_reg->channels++; 3566 } 3567 } 3568 if (reg) { 3569 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 3570 reg->channel, reg->channels); 3571 } 3572 if (cli_reg) { 3573 wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)", 3574 cli_reg->channel, cli_reg->channels); 3575 } 3576 } 3577 3578 chan->reg_classes = cla; 3579 cli_chan->reg_classes = cli_cla; 3580 3581 return 0; 3582} 3583 3584 3585int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, 3586 struct hostapd_hw_modes *mode, u8 channel) 3587{ 3588 int op; 3589 enum chan_allowed ret; 3590 3591 for (op = 0; op_class[op].op_class; op++) { 3592 struct p2p_oper_class_map *o = &op_class[op]; 3593 u8 ch; 3594 3595 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 3596 if (o->mode != HOSTAPD_MODE_IEEE80211A || 3597 o->bw == BW20 || ch != channel) 3598 continue; 3599 ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); 3600 if (ret == ALLOWED) 3601 return (o->bw == BW40MINUS) ? -1 : 1; 3602 } 3603 } 3604 return 0; 3605} 3606 3607 3608int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s, 3609 struct hostapd_hw_modes *mode, u8 channel) 3610{ 3611 if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80)) 3612 return 0; 3613 3614 return wpas_p2p_get_center_80mhz(wpa_s, mode, channel); 3615} 3616 3617 3618static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 3619 size_t buf_len) 3620{ 3621 struct wpa_supplicant *wpa_s = ctx; 3622 3623 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3624 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 3625 break; 3626 } 3627 if (wpa_s == NULL) 3628 return -1; 3629 3630 return wpa_drv_get_noa(wpa_s, buf, buf_len); 3631} 3632 3633 3634static int wpas_go_connected(void *ctx, const u8 *dev_addr) 3635{ 3636 struct wpa_supplicant *wpa_s = ctx; 3637 3638 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3639 struct wpa_ssid *ssid = wpa_s->current_ssid; 3640 if (ssid == NULL) 3641 continue; 3642 if (ssid->mode != WPAS_MODE_INFRA) 3643 continue; 3644 if (wpa_s->wpa_state != WPA_COMPLETED && 3645 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 3646 continue; 3647 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 3648 return 1; 3649 } 3650 3651 return 0; 3652} 3653 3654 3655static int wpas_is_concurrent_session_active(void *ctx) 3656{ 3657 struct wpa_supplicant *wpa_s = ctx; 3658 struct wpa_supplicant *ifs; 3659 3660 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { 3661 if (ifs == wpa_s) 3662 continue; 3663 if (ifs->wpa_state > WPA_ASSOCIATED) 3664 return 1; 3665 } 3666 return 0; 3667} 3668 3669 3670static void wpas_p2p_debug_print(void *ctx, int level, const char *msg) 3671{ 3672 struct wpa_supplicant *wpa_s = ctx; 3673 wpa_msg_global(wpa_s, level, "P2P: %s", msg); 3674} 3675 3676 3677int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s) 3678{ 3679 struct wpa_interface iface; 3680 struct wpa_supplicant *p2pdev_wpa_s; 3681 char ifname[100]; 3682 char force_name[100]; 3683 int ret; 3684 3685 os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s", 3686 wpa_s->ifname); 3687 force_name[0] = '\0'; 3688 wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE; 3689 ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL, 3690 force_name, wpa_s->pending_interface_addr, NULL); 3691 if (ret < 0) { 3692 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface"); 3693 return ret; 3694 } 3695 os_strlcpy(wpa_s->pending_interface_name, ifname, 3696 sizeof(wpa_s->pending_interface_name)); 3697 3698 os_memset(&iface, 0, sizeof(iface)); 3699 iface.p2p_mgmt = 1; 3700 iface.ifname = wpa_s->pending_interface_name; 3701 iface.driver = wpa_s->driver->name; 3702 iface.driver_param = wpa_s->conf->driver_param; 3703 3704 /* 3705 * If a P2P Device configuration file was given, use it as the interface 3706 * configuration file (instead of using parent's configuration file. 3707 */ 3708 if (wpa_s->conf_p2p_dev) { 3709 iface.confname = wpa_s->conf_p2p_dev; 3710 iface.ctrl_interface = NULL; 3711 } else { 3712 iface.confname = wpa_s->confname; 3713 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 3714 } 3715 iface.conf_p2p_dev = NULL; 3716 3717 p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 3718 if (!p2pdev_wpa_s) { 3719 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface"); 3720 return -1; 3721 } 3722 p2pdev_wpa_s->parent = wpa_s; 3723 3724 wpa_s->pending_interface_name[0] = '\0'; 3725 return 0; 3726} 3727 3728 3729static void wpas_presence_resp(void *ctx, const u8 *src, u8 status, 3730 const u8 *noa, size_t noa_len) 3731{ 3732 struct wpa_supplicant *wpa_s, *intf = ctx; 3733 char hex[100]; 3734 3735 for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3736 if (wpa_s->waiting_presence_resp) 3737 break; 3738 } 3739 if (!wpa_s) { 3740 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response"); 3741 return; 3742 } 3743 wpa_s->waiting_presence_resp = 0; 3744 3745 wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len); 3746 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR 3747 " status=%u noa=%s", MAC2STR(src), status, hex); 3748} 3749 3750 3751static int _wpas_p2p_in_progress(void *ctx) 3752{ 3753 struct wpa_supplicant *wpa_s = ctx; 3754 return wpas_p2p_in_progress(wpa_s); 3755} 3756 3757 3758/** 3759 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 3760 * @global: Pointer to global data from wpa_supplicant_init() 3761 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3762 * Returns: 0 on success, -1 on failure 3763 */ 3764int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 3765{ 3766 struct p2p_config p2p; 3767 unsigned int r; 3768 int i; 3769 3770 if (wpa_s->conf->p2p_disabled) 3771 return 0; 3772 3773 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 3774 return 0; 3775 3776 if (global->p2p) 3777 return 0; 3778 3779 os_memset(&p2p, 0, sizeof(p2p)); 3780 p2p.cb_ctx = wpa_s; 3781 p2p.debug_print = wpas_p2p_debug_print; 3782 p2p.p2p_scan = wpas_p2p_scan; 3783 p2p.send_action = wpas_send_action; 3784 p2p.send_action_done = wpas_send_action_done; 3785 p2p.go_neg_completed = wpas_go_neg_completed; 3786 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 3787 p2p.dev_found = wpas_dev_found; 3788 p2p.dev_lost = wpas_dev_lost; 3789 p2p.find_stopped = wpas_find_stopped; 3790 p2p.start_listen = wpas_start_listen; 3791 p2p.stop_listen = wpas_stop_listen; 3792 p2p.send_probe_resp = wpas_send_probe_resp; 3793 p2p.sd_request = wpas_sd_request; 3794 p2p.sd_response = wpas_sd_response; 3795 p2p.prov_disc_req = wpas_prov_disc_req; 3796 p2p.prov_disc_resp = wpas_prov_disc_resp; 3797 p2p.prov_disc_fail = wpas_prov_disc_fail; 3798 p2p.invitation_process = wpas_invitation_process; 3799 p2p.invitation_received = wpas_invitation_received; 3800 p2p.invitation_result = wpas_invitation_result; 3801 p2p.get_noa = wpas_get_noa; 3802 p2p.go_connected = wpas_go_connected; 3803 p2p.presence_resp = wpas_presence_resp; 3804 p2p.is_concurrent_session_active = wpas_is_concurrent_session_active; 3805 p2p.is_p2p_in_progress = _wpas_p2p_in_progress; 3806 3807 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 3808 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 3809 p2p.dev_name = wpa_s->conf->device_name; 3810 p2p.manufacturer = wpa_s->conf->manufacturer; 3811 p2p.model_name = wpa_s->conf->model_name; 3812 p2p.model_number = wpa_s->conf->model_number; 3813 p2p.serial_number = wpa_s->conf->serial_number; 3814 if (wpa_s->wps) { 3815 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 3816 p2p.config_methods = wpa_s->wps->config_methods; 3817 } 3818 3819 if (wpa_s->conf->p2p_listen_reg_class && 3820 wpa_s->conf->p2p_listen_channel) { 3821 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 3822 p2p.channel = wpa_s->conf->p2p_listen_channel; 3823 } else { 3824 p2p.reg_class = 81; 3825 /* 3826 * Pick one of the social channels randomly as the listen 3827 * channel. 3828 */ 3829 os_get_random((u8 *) &r, sizeof(r)); 3830 p2p.channel = 1 + (r % 3) * 5; 3831 } 3832 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 3833 3834 if (wpa_s->conf->p2p_oper_reg_class && 3835 wpa_s->conf->p2p_oper_channel) { 3836 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 3837 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 3838 p2p.cfg_op_channel = 1; 3839 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 3840 "%d:%d", p2p.op_reg_class, p2p.op_channel); 3841 3842 } else { 3843 p2p.op_reg_class = 81; 3844 /* 3845 * Use random operation channel from (1, 6, 11) if no other 3846 * preference is indicated. 3847 */ 3848 os_get_random((u8 *) &r, sizeof(r)); 3849 p2p.op_channel = 1 + (r % 3) * 5; 3850 p2p.cfg_op_channel = 0; 3851 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 3852 "%d:%d", p2p.op_reg_class, p2p.op_channel); 3853 } 3854 3855 if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) { 3856 p2p.pref_chan = wpa_s->conf->p2p_pref_chan; 3857 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan; 3858 } 3859 3860 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 3861 os_memcpy(p2p.country, wpa_s->conf->country, 2); 3862 p2p.country[2] = 0x04; 3863 } else 3864 os_memcpy(p2p.country, "XX\x04", 3); 3865 3866 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) { 3867 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 3868 "channel list"); 3869 return -1; 3870 } 3871 3872 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 3873 WPS_DEV_TYPE_LEN); 3874 3875 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 3876 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 3877 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 3878 3879 p2p.concurrent_operations = !!(wpa_s->drv_flags & 3880 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 3881 3882 p2p.max_peers = 100; 3883 3884 if (wpa_s->conf->p2p_ssid_postfix) { 3885 p2p.ssid_postfix_len = 3886 os_strlen(wpa_s->conf->p2p_ssid_postfix); 3887 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 3888 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 3889 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 3890 p2p.ssid_postfix_len); 3891 } 3892 3893 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 3894 3895 p2p.max_listen = wpa_s->max_remain_on_chan; 3896 3897 global->p2p = p2p_init(&p2p); 3898 if (global->p2p == NULL) 3899 return -1; 3900 global->p2p_init_wpa_s = wpa_s; 3901 3902 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 3903 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 3904 continue; 3905 p2p_add_wps_vendor_extension( 3906 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 3907 } 3908 3909 p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq); 3910 3911 return 0; 3912} 3913 3914 3915/** 3916 * wpas_p2p_deinit - Deinitialize per-interface P2P data 3917 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3918 * 3919 * This function deinitialize per-interface P2P data. 3920 */ 3921void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 3922{ 3923 if (wpa_s->driver && wpa_s->drv_priv) 3924 wpa_drv_probe_req_report(wpa_s, 0); 3925 3926 if (wpa_s->go_params) { 3927 /* Clear any stored provisioning info */ 3928 p2p_clear_provisioning_info( 3929 wpa_s->global->p2p, 3930 wpa_s->go_params->peer_device_addr); 3931 } 3932 3933 os_free(wpa_s->go_params); 3934 wpa_s->go_params = NULL; 3935 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 3936 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3937 wpa_s->p2p_long_listen = 0; 3938 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3939 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 3940 wpas_p2p_remove_pending_group_interface(wpa_s); 3941 eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL); 3942 wpas_p2p_listen_work_done(wpa_s); 3943 if (wpa_s->p2p_send_action_work) { 3944 os_free(wpa_s->p2p_send_action_work->ctx); 3945 radio_work_done(wpa_s->p2p_send_action_work); 3946 wpa_s->p2p_send_action_work = NULL; 3947 } 3948 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL); 3949 3950 wpabuf_free(wpa_s->p2p_oob_dev_pw); 3951 wpa_s->p2p_oob_dev_pw = NULL; 3952 3953 /* TODO: remove group interface from the driver if this wpa_s instance 3954 * is on top of a P2P group interface */ 3955} 3956 3957 3958/** 3959 * wpas_p2p_deinit_global - Deinitialize global P2P module 3960 * @global: Pointer to global data from wpa_supplicant_init() 3961 * 3962 * This function deinitializes the global (per device) P2P module. 3963 */ 3964void wpas_p2p_deinit_global(struct wpa_global *global) 3965{ 3966 struct wpa_supplicant *wpa_s, *tmp; 3967 3968 wpa_s = global->ifaces; 3969 if (wpa_s) 3970 wpas_p2p_service_flush(wpa_s); 3971 3972 if (global->p2p == NULL) 3973 return; 3974 3975 /* Remove remaining P2P group interfaces */ 3976 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 3977 wpa_s = wpa_s->next; 3978 while (wpa_s) { 3979 tmp = global->ifaces; 3980 while (tmp && 3981 (tmp == wpa_s || 3982 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 3983 tmp = tmp->next; 3984 } 3985 if (tmp == NULL) 3986 break; 3987 /* Disconnect from the P2P group and deinit the interface */ 3988 wpas_p2p_disconnect(tmp); 3989 } 3990 3991 /* 3992 * Deinit GO data on any possibly remaining interface (if main 3993 * interface is used as GO). 3994 */ 3995 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3996 if (wpa_s->ap_iface) 3997 wpas_p2p_group_deinit(wpa_s); 3998 } 3999 4000 p2p_deinit(global->p2p); 4001 global->p2p = NULL; 4002 global->p2p_init_wpa_s = NULL; 4003} 4004 4005 4006static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 4007{ 4008 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 4009 wpa_s->conf->p2p_no_group_iface) 4010 return 0; /* separate interface disabled per configuration */ 4011 if (wpa_s->drv_flags & 4012 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 4013 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 4014 return 1; /* P2P group requires a new interface in every case 4015 */ 4016 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 4017 return 0; /* driver does not support concurrent operations */ 4018 if (wpa_s->global->ifaces->next) 4019 return 1; /* more that one interface already in use */ 4020 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 4021 return 1; /* this interface is already in use */ 4022 return 0; 4023} 4024 4025 4026static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 4027 const u8 *peer_addr, 4028 enum p2p_wps_method wps_method, 4029 int go_intent, const u8 *own_interface_addr, 4030 unsigned int force_freq, int persistent_group, 4031 struct wpa_ssid *ssid, unsigned int pref_freq) 4032{ 4033 if (persistent_group && wpa_s->conf->persistent_reconnect) 4034 persistent_group = 2; 4035 4036 /* 4037 * Increase GO config timeout if HT40 is used since it takes some time 4038 * to scan channels for coex purposes before the BSS can be started. 4039 */ 4040 p2p_set_config_timeout(wpa_s->global->p2p, 4041 wpa_s->p2p_go_ht40 ? 255 : 100, 20); 4042 4043 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 4044 go_intent, own_interface_addr, force_freq, 4045 persistent_group, ssid ? ssid->ssid : NULL, 4046 ssid ? ssid->ssid_len : 0, 4047 wpa_s->p2p_pd_before_go_neg, pref_freq, 4048 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4049 0); 4050} 4051 4052 4053static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 4054 const u8 *peer_addr, 4055 enum p2p_wps_method wps_method, 4056 int go_intent, const u8 *own_interface_addr, 4057 unsigned int force_freq, int persistent_group, 4058 struct wpa_ssid *ssid, unsigned int pref_freq) 4059{ 4060 if (persistent_group && wpa_s->conf->persistent_reconnect) 4061 persistent_group = 2; 4062 4063 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 4064 go_intent, own_interface_addr, force_freq, 4065 persistent_group, ssid ? ssid->ssid : NULL, 4066 ssid ? ssid->ssid_len : 0, pref_freq, 4067 wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id : 4068 0); 4069} 4070 4071 4072static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 4073{ 4074 wpa_s->p2p_join_scan_count++; 4075 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 4076 wpa_s->p2p_join_scan_count); 4077 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 4078 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 4079 " for join operationg - stop join attempt", 4080 MAC2STR(wpa_s->pending_join_iface_addr)); 4081 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4082 if (wpa_s->p2p_auto_pd) { 4083 wpa_s->p2p_auto_pd = 0; 4084 wpa_msg_global(wpa_s, MSG_INFO, 4085 P2P_EVENT_PROV_DISC_FAILURE 4086 " p2p_dev_addr=" MACSTR " status=N/A", 4087 MAC2STR(wpa_s->pending_join_dev_addr)); 4088 return; 4089 } 4090 wpa_msg_global(wpa_s->parent, MSG_INFO, 4091 P2P_EVENT_GROUP_FORMATION_FAILURE); 4092 } 4093} 4094 4095 4096static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) 4097{ 4098 int *freqs, res, num, i; 4099 4100 if (wpas_p2p_num_unused_channels(wpa_s) > 0) { 4101 /* Multiple channels are supported and not all are in use */ 4102 return 0; 4103 } 4104 4105 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 4106 if (!freqs) 4107 return 1; 4108 4109 num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 4110 wpa_s->num_multichan_concurrent); 4111 if (num < 0) { 4112 res = 1; 4113 goto exit_free; 4114 } 4115 4116 for (i = 0; i < num; i++) { 4117 if (freqs[i] == freq) { 4118 wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used", 4119 freq); 4120 res = 0; 4121 goto exit_free; 4122 } 4123 } 4124 4125 res = 1; 4126 4127exit_free: 4128 os_free(freqs); 4129 return res; 4130} 4131 4132 4133static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, 4134 const u8 *peer_dev_addr) 4135{ 4136 struct wpa_bss *bss; 4137 int updated; 4138 4139 bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); 4140 if (bss == NULL) 4141 return -1; 4142 if (bss->last_update_idx < wpa_s->bss_update_idx) { 4143 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " 4144 "last scan"); 4145 return 0; 4146 } 4147 4148 updated = os_reltime_before(&wpa_s->p2p_auto_started, 4149 &bss->last_update); 4150 wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " 4151 "%ld.%06ld (%supdated in last scan)", 4152 bss->last_update.sec, bss->last_update.usec, 4153 updated ? "": "not "); 4154 4155 return updated; 4156} 4157 4158 4159static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 4160 struct wpa_scan_results *scan_res) 4161{ 4162 struct wpa_bss *bss = NULL; 4163 int freq; 4164 u8 iface_addr[ETH_ALEN]; 4165 4166 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4167 4168 if (wpa_s->global->p2p_disabled) 4169 return; 4170 4171 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", 4172 scan_res ? (int) scan_res->num : -1, 4173 wpa_s->p2p_auto_join ? "auto_" : ""); 4174 4175 if (scan_res) 4176 wpas_p2p_scan_res_handler(wpa_s, scan_res); 4177 4178 if (wpa_s->p2p_auto_pd) { 4179 int join = wpas_p2p_peer_go(wpa_s, 4180 wpa_s->pending_join_dev_addr); 4181 if (join == 0 && 4182 wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { 4183 wpa_s->auto_pd_scan_retry++; 4184 bss = wpa_bss_get_bssid_latest( 4185 wpa_s, wpa_s->pending_join_dev_addr); 4186 if (bss) { 4187 freq = bss->freq; 4188 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " 4189 "the peer " MACSTR " at %d MHz", 4190 wpa_s->auto_pd_scan_retry, 4191 MAC2STR(wpa_s-> 4192 pending_join_dev_addr), 4193 freq); 4194 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0); 4195 return; 4196 } 4197 } 4198 4199 if (join < 0) 4200 join = 0; 4201 4202 wpa_s->p2p_auto_pd = 0; 4203 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; 4204 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", 4205 MAC2STR(wpa_s->pending_join_dev_addr), join); 4206 if (p2p_prov_disc_req(wpa_s->global->p2p, 4207 wpa_s->pending_join_dev_addr, 4208 wpa_s->pending_pd_config_methods, join, 4209 0, wpa_s->user_initiated_pd) < 0) { 4210 wpa_s->p2p_auto_pd = 0; 4211 wpa_msg_global(wpa_s, MSG_INFO, 4212 P2P_EVENT_PROV_DISC_FAILURE 4213 " p2p_dev_addr=" MACSTR " status=N/A", 4214 MAC2STR(wpa_s->pending_join_dev_addr)); 4215 } 4216 return; 4217 } 4218 4219 if (wpa_s->p2p_auto_join) { 4220 int join = wpas_p2p_peer_go(wpa_s, 4221 wpa_s->pending_join_dev_addr); 4222 if (join < 0) { 4223 wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " 4224 "running a GO -> use GO Negotiation"); 4225 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, 4226 wpa_s->p2p_pin, wpa_s->p2p_wps_method, 4227 wpa_s->p2p_persistent_group, 0, 0, 0, 4228 wpa_s->p2p_go_intent, 4229 wpa_s->p2p_connect_freq, 4230 wpa_s->p2p_persistent_id, 4231 wpa_s->p2p_pd_before_go_neg, 4232 wpa_s->p2p_go_ht40, 4233 wpa_s->p2p_go_vht); 4234 return; 4235 } 4236 4237 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " 4238 "try to join the group", join ? "" : 4239 " in older scan"); 4240 if (!join) 4241 wpa_s->p2p_fallback_to_go_neg = 1; 4242 } 4243 4244 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4245 wpa_s->pending_join_iface_addr); 4246 if (freq < 0 && 4247 p2p_get_interface_addr(wpa_s->global->p2p, 4248 wpa_s->pending_join_dev_addr, 4249 iface_addr) == 0 && 4250 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 4251 { 4252 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 4253 "address for join from " MACSTR " to " MACSTR 4254 " based on newly discovered P2P peer entry", 4255 MAC2STR(wpa_s->pending_join_iface_addr), 4256 MAC2STR(iface_addr)); 4257 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 4258 ETH_ALEN); 4259 4260 freq = p2p_get_oper_freq(wpa_s->global->p2p, 4261 wpa_s->pending_join_iface_addr); 4262 } 4263 if (freq >= 0) { 4264 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4265 "from P2P peer table: %d MHz", freq); 4266 } 4267 if (wpa_s->p2p_join_ssid_len) { 4268 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4269 MACSTR " and SSID %s", 4270 MAC2STR(wpa_s->pending_join_iface_addr), 4271 wpa_ssid_txt(wpa_s->p2p_join_ssid, 4272 wpa_s->p2p_join_ssid_len)); 4273 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr, 4274 wpa_s->p2p_join_ssid, 4275 wpa_s->p2p_join_ssid_len); 4276 } 4277 if (!bss) { 4278 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID " 4279 MACSTR, MAC2STR(wpa_s->pending_join_iface_addr)); 4280 bss = wpa_bss_get_bssid_latest(wpa_s, 4281 wpa_s->pending_join_iface_addr); 4282 } 4283 if (bss) { 4284 freq = bss->freq; 4285 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 4286 "from BSS table: %d MHz (SSID %s)", freq, 4287 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4288 } 4289 if (freq > 0) { 4290 u16 method; 4291 4292 if (wpas_check_freq_conflict(wpa_s, freq) > 0) { 4293 wpa_msg_global(wpa_s->parent, MSG_INFO, 4294 P2P_EVENT_GROUP_FORMATION_FAILURE 4295 "reason=FREQ_CONFLICT"); 4296 return; 4297 } 4298 4299 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 4300 "prior to joining an existing group (GO " MACSTR 4301 " freq=%u MHz)", 4302 MAC2STR(wpa_s->pending_join_dev_addr), freq); 4303 wpa_s->pending_pd_before_join = 1; 4304 4305 switch (wpa_s->pending_join_wps_method) { 4306 case WPS_PIN_DISPLAY: 4307 method = WPS_CONFIG_KEYPAD; 4308 break; 4309 case WPS_PIN_KEYPAD: 4310 method = WPS_CONFIG_DISPLAY; 4311 break; 4312 case WPS_PBC: 4313 method = WPS_CONFIG_PUSHBUTTON; 4314 break; 4315 default: 4316 method = 0; 4317 break; 4318 } 4319 4320 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 4321 wpa_s->pending_join_dev_addr) == 4322 method)) { 4323 /* 4324 * We have already performed provision discovery for 4325 * joining the group. Proceed directly to join 4326 * operation without duplicated provision discovery. */ 4327 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 4328 "with " MACSTR " already done - proceed to " 4329 "join", 4330 MAC2STR(wpa_s->pending_join_dev_addr)); 4331 wpa_s->pending_pd_before_join = 0; 4332 goto start; 4333 } 4334 4335 if (p2p_prov_disc_req(wpa_s->global->p2p, 4336 wpa_s->pending_join_dev_addr, method, 1, 4337 freq, wpa_s->user_initiated_pd) < 0) { 4338 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 4339 "Discovery Request before joining an " 4340 "existing group"); 4341 wpa_s->pending_pd_before_join = 0; 4342 goto start; 4343 } 4344 return; 4345 } 4346 4347 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 4348 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4349 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4350 wpas_p2p_check_join_scan_limit(wpa_s); 4351 return; 4352 4353start: 4354 /* Start join operation immediately */ 4355 wpas_p2p_join_start(wpa_s, 0, NULL, 0); 4356} 4357 4358 4359static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq, 4360 const u8 *ssid, size_t ssid_len) 4361{ 4362 int ret; 4363 struct wpa_driver_scan_params params; 4364 struct wpabuf *wps_ie, *ies; 4365 size_t ielen; 4366 int freqs[2] = { 0, 0 }; 4367 4368 os_memset(¶ms, 0, sizeof(params)); 4369 4370 /* P2P Wildcard SSID */ 4371 params.num_ssids = 1; 4372 if (ssid && ssid_len) { 4373 params.ssids[0].ssid = ssid; 4374 params.ssids[0].ssid_len = ssid_len; 4375 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len); 4376 wpa_s->p2p_join_ssid_len = ssid_len; 4377 } else { 4378 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 4379 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 4380 wpa_s->p2p_join_ssid_len = 0; 4381 } 4382 4383 wpa_s->wps->dev.p2p = 1; 4384 wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, 4385 wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, 4386 NULL); 4387 if (wps_ie == NULL) { 4388 wpas_p2p_scan_res_join(wpa_s, NULL); 4389 return; 4390 } 4391 4392 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 4393 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 4394 if (ies == NULL) { 4395 wpabuf_free(wps_ie); 4396 wpas_p2p_scan_res_join(wpa_s, NULL); 4397 return; 4398 } 4399 wpabuf_put_buf(ies, wps_ie); 4400 wpabuf_free(wps_ie); 4401 4402 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 4403 4404 params.p2p_probe = 1; 4405 params.extra_ies = wpabuf_head(ies); 4406 params.extra_ies_len = wpabuf_len(ies); 4407 4408 if (!freq) { 4409 int oper_freq; 4410 /* 4411 * If freq is not provided, check the operating freq of the GO 4412 * and use a single channel scan on if possible. 4413 */ 4414 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p, 4415 wpa_s->pending_join_iface_addr); 4416 if (oper_freq > 0) 4417 freq = oper_freq; 4418 } 4419 if (freq > 0) { 4420 freqs[0] = freq; 4421 params.freqs = freqs; 4422 } 4423 4424 /* 4425 * Run a scan to update BSS table and start Provision Discovery once 4426 * the new scan results become available. 4427 */ 4428 ret = wpa_drv_scan(wpa_s, ¶ms); 4429 if (!ret) { 4430 os_get_reltime(&wpa_s->scan_trigger_time); 4431 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 4432 wpa_s->own_scan_requested = 1; 4433 } 4434 4435 wpabuf_free(ies); 4436 4437 if (ret) { 4438 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 4439 "try again later"); 4440 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 4441 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 4442 wpas_p2p_check_join_scan_limit(wpa_s); 4443 } 4444} 4445 4446 4447static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 4448{ 4449 struct wpa_supplicant *wpa_s = eloop_ctx; 4450 wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0); 4451} 4452 4453 4454static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 4455 const u8 *dev_addr, enum p2p_wps_method wps_method, 4456 int auto_join, int op_freq, 4457 const u8 *ssid, size_t ssid_len) 4458{ 4459 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 4460 MACSTR " dev " MACSTR " op_freq=%d)%s", 4461 MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq, 4462 auto_join ? " (auto_join)" : ""); 4463 if (ssid && ssid_len) { 4464 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s", 4465 wpa_ssid_txt(ssid, ssid_len)); 4466 } 4467 4468 wpa_s->p2p_auto_pd = 0; 4469 wpa_s->p2p_auto_join = !!auto_join; 4470 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 4471 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 4472 wpa_s->pending_join_wps_method = wps_method; 4473 4474 /* Make sure we are not running find during connection establishment */ 4475 wpas_p2p_stop_find(wpa_s); 4476 4477 wpa_s->p2p_join_scan_count = 0; 4478 wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len); 4479 return 0; 4480} 4481 4482 4483static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq, 4484 const u8 *ssid, size_t ssid_len) 4485{ 4486 struct wpa_supplicant *group; 4487 struct p2p_go_neg_results res; 4488 struct wpa_bss *bss; 4489 4490 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 4491 if (group == NULL) 4492 return -1; 4493 if (group != wpa_s) { 4494 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 4495 sizeof(group->p2p_pin)); 4496 group->p2p_wps_method = wpa_s->p2p_wps_method; 4497 } else { 4498 /* 4499 * Need to mark the current interface for p2p_group_formation 4500 * when a separate group interface is not used. This is needed 4501 * to allow p2p_cancel stop a pending p2p_connect-join. 4502 * wpas_p2p_init_group_interface() addresses this for the case 4503 * where a separate group interface is used. 4504 */ 4505 wpa_s->global->p2p_group_formation = wpa_s; 4506 } 4507 4508 group->p2p_in_provisioning = 1; 4509 group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; 4510 4511 os_memset(&res, 0, sizeof(res)); 4512 os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN); 4513 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 4514 ETH_ALEN); 4515 res.wps_method = wpa_s->pending_join_wps_method; 4516 if (freq && ssid && ssid_len) { 4517 res.freq = freq; 4518 res.ssid_len = ssid_len; 4519 os_memcpy(res.ssid, ssid, ssid_len); 4520 } else { 4521 bss = wpa_bss_get_bssid_latest(wpa_s, 4522 wpa_s->pending_join_iface_addr); 4523 if (bss) { 4524 res.freq = bss->freq; 4525 res.ssid_len = bss->ssid_len; 4526 os_memcpy(res.ssid, bss->ssid, bss->ssid_len); 4527 wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)", 4528 bss->freq, 4529 wpa_ssid_txt(bss->ssid, bss->ssid_len)); 4530 } 4531 } 4532 4533 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 4534 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 4535 "starting client"); 4536 wpa_drv_cancel_remain_on_channel(wpa_s); 4537 wpa_s->off_channel_freq = 0; 4538 wpa_s->roc_waiting_drv_freq = 0; 4539 } 4540 wpas_start_wps_enrollee(group, &res); 4541 4542 /* 4543 * Allow a longer timeout for join-a-running-group than normal 15 4544 * second group formation timeout since the GO may not have authorized 4545 * our connection yet. 4546 */ 4547 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 4548 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 4549 wpa_s, NULL); 4550 4551 return 0; 4552} 4553 4554 4555static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq, 4556 int *force_freq, int *pref_freq, int go) 4557{ 4558 int *freqs, res; 4559 unsigned int freq_in_use = 0, num, i; 4560 4561 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 4562 if (!freqs) 4563 return -1; 4564 4565 num = get_shared_radio_freqs(wpa_s, freqs, 4566 wpa_s->num_multichan_concurrent); 4567 wpa_printf(MSG_DEBUG, 4568 "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u", 4569 freq, wpa_s->num_multichan_concurrent, num); 4570 4571 if (freq > 0) { 4572 int ret; 4573 if (go) 4574 ret = p2p_supported_freq(wpa_s->global->p2p, freq); 4575 else 4576 ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq); 4577 if (!ret) { 4578 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 4579 "(%u MHz) is not supported for P2P uses", 4580 freq); 4581 res = -3; 4582 goto exit_free; 4583 } 4584 4585 for (i = 0; i < num; i++) { 4586 if (freqs[i] == freq) 4587 freq_in_use = 1; 4588 } 4589 4590 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) { 4591 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels", 4592 freq); 4593 res = -2; 4594 goto exit_free; 4595 } 4596 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 4597 "requested channel (%u MHz)", freq); 4598 *force_freq = freq; 4599 goto exit_ok; 4600 } 4601 4602 for (i = 0; i < num; i++) { 4603 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i])) 4604 continue; 4605 4606 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) { 4607 wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using", 4608 freqs[i]); 4609 *pref_freq = freqs[i]; 4610 } else { 4611 wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use", 4612 freqs[i]); 4613 *force_freq = freqs[i]; 4614 } 4615 break; 4616 } 4617 4618 if (i == num) { 4619 if (num < wpa_s->num_multichan_concurrent && num > 0) { 4620 wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel"); 4621 *force_freq = 0; 4622 } else if (num < wpa_s->num_multichan_concurrent) { 4623 wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel"); 4624 *force_freq = 0; 4625 } else { 4626 wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group"); 4627 res = -2; 4628 goto exit_free; 4629 } 4630 } 4631 4632exit_ok: 4633 res = 0; 4634exit_free: 4635 os_free(freqs); 4636 return res; 4637} 4638 4639 4640/** 4641 * wpas_p2p_connect - Request P2P Group Formation to be started 4642 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4643 * @peer_addr: Address of the peer P2P Device 4644 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 4645 * @persistent_group: Whether to create a persistent group 4646 * @auto_join: Whether to select join vs. GO Negotiation automatically 4647 * @join: Whether to join an existing group (as a client) instead of starting 4648 * Group Owner negotiation; @peer_addr is BSSID in that case 4649 * @auth: Whether to only authorize the connection instead of doing that and 4650 * initiating Group Owner negotiation 4651 * @go_intent: GO Intent or -1 to use default 4652 * @freq: Frequency for the group or 0 for auto-selection 4653 * @persistent_id: Persistent group credentials to use for forcing GO 4654 * parameters or -1 to generate new values (SSID/passphrase) 4655 * @pd: Whether to send Provision Discovery prior to GO Negotiation as an 4656 * interoperability workaround when initiating group formation 4657 * @ht40: Start GO with 40 MHz channel width 4658 * @vht: Start GO with VHT support 4659 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 4660 * failure, -2 on failure due to channel not currently available, 4661 * -3 if forced channel is not supported 4662 */ 4663int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 4664 const char *pin, enum p2p_wps_method wps_method, 4665 int persistent_group, int auto_join, int join, int auth, 4666 int go_intent, int freq, int persistent_id, int pd, 4667 int ht40, int vht) 4668{ 4669 int force_freq = 0, pref_freq = 0; 4670 int ret = 0, res; 4671 enum wpa_driver_if_type iftype; 4672 const u8 *if_addr; 4673 struct wpa_ssid *ssid = NULL; 4674 4675 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4676 return -1; 4677 4678 if (persistent_id >= 0) { 4679 ssid = wpa_config_get_network(wpa_s->conf, persistent_id); 4680 if (ssid == NULL || ssid->disabled != 2 || 4681 ssid->mode != WPAS_MODE_P2P_GO) 4682 return -1; 4683 } 4684 4685 os_free(wpa_s->global->add_psk); 4686 wpa_s->global->add_psk = NULL; 4687 4688 wpa_s->global->p2p_fail_on_wps_complete = 0; 4689 4690 if (go_intent < 0) 4691 go_intent = wpa_s->conf->p2p_go_intent; 4692 4693 if (!auth) 4694 wpa_s->p2p_long_listen = 0; 4695 4696 wpa_s->p2p_wps_method = wps_method; 4697 wpa_s->p2p_persistent_group = !!persistent_group; 4698 wpa_s->p2p_persistent_id = persistent_id; 4699 wpa_s->p2p_go_intent = go_intent; 4700 wpa_s->p2p_connect_freq = freq; 4701 wpa_s->p2p_fallback_to_go_neg = 0; 4702 wpa_s->p2p_pd_before_go_neg = !!pd; 4703 wpa_s->p2p_go_ht40 = !!ht40; 4704 wpa_s->p2p_go_vht = !!vht; 4705 4706 if (pin) 4707 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 4708 else if (wps_method == WPS_PIN_DISPLAY) { 4709 ret = wps_generate_pin(); 4710 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 4711 ret); 4712 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 4713 wpa_s->p2p_pin); 4714 } else 4715 wpa_s->p2p_pin[0] = '\0'; 4716 4717 if (join || auto_join) { 4718 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 4719 if (auth) { 4720 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 4721 "connect a running group from " MACSTR, 4722 MAC2STR(peer_addr)); 4723 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 4724 return ret; 4725 } 4726 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 4727 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 4728 iface_addr) < 0) { 4729 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 4730 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 4731 dev_addr); 4732 } 4733 if (auto_join) { 4734 os_get_reltime(&wpa_s->p2p_auto_started); 4735 wpa_printf(MSG_DEBUG, "P2P: Auto join started at " 4736 "%ld.%06ld", 4737 wpa_s->p2p_auto_started.sec, 4738 wpa_s->p2p_auto_started.usec); 4739 } 4740 wpa_s->user_initiated_pd = 1; 4741 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, 4742 auto_join, freq, NULL, 0) < 0) 4743 return -1; 4744 return ret; 4745 } 4746 4747 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 4748 go_intent == 15); 4749 if (res) 4750 return res; 4751 wpas_p2p_set_own_freq_preference(wpa_s, 4752 force_freq ? force_freq : pref_freq); 4753 4754 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 4755 4756 if (wpa_s->create_p2p_iface) { 4757 /* Prepare to add a new interface for the group */ 4758 iftype = WPA_IF_P2P_GROUP; 4759 if (go_intent == 15) 4760 iftype = WPA_IF_P2P_GO; 4761 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 4762 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 4763 "interface for the group"); 4764 return -1; 4765 } 4766 4767 if_addr = wpa_s->pending_interface_addr; 4768 } else 4769 if_addr = wpa_s->own_addr; 4770 4771 if (auth) { 4772 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 4773 go_intent, if_addr, 4774 force_freq, persistent_group, ssid, 4775 pref_freq) < 0) 4776 return -1; 4777 return ret; 4778 } 4779 4780 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 4781 go_intent, if_addr, force_freq, 4782 persistent_group, ssid, pref_freq) < 0) { 4783 if (wpa_s->create_p2p_iface) 4784 wpas_p2p_remove_pending_group_interface(wpa_s); 4785 return -1; 4786 } 4787 return ret; 4788} 4789 4790 4791/** 4792 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 4793 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4794 * @freq: Frequency of the channel in MHz 4795 * @duration: Duration of the stay on the channel in milliseconds 4796 * 4797 * This callback is called when the driver indicates that it has started the 4798 * requested remain-on-channel duration. 4799 */ 4800void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 4801 unsigned int freq, unsigned int duration) 4802{ 4803 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4804 return; 4805 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 4806 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 4807 wpa_s->pending_listen_duration); 4808 wpa_s->pending_listen_freq = 0; 4809 } else { 4810 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)", 4811 wpa_s->off_channel_freq, wpa_s->pending_listen_freq, 4812 freq, duration); 4813 } 4814} 4815 4816 4817static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 4818 unsigned int timeout) 4819{ 4820 /* Limit maximum Listen state time based on driver limitation. */ 4821 if (timeout > wpa_s->max_remain_on_chan) 4822 timeout = wpa_s->max_remain_on_chan; 4823 4824 return p2p_listen(wpa_s->global->p2p, timeout); 4825} 4826 4827 4828/** 4829 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 4830 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4831 * @freq: Frequency of the channel in MHz 4832 * 4833 * This callback is called when the driver indicates that a remain-on-channel 4834 * operation has been completed, i.e., the duration on the requested channel 4835 * has timed out. 4836 */ 4837void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 4838 unsigned int freq) 4839{ 4840 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 4841 "(p2p_long_listen=%d ms pending_action_tx=%p)", 4842 wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); 4843 wpas_p2p_listen_work_done(wpa_s); 4844 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4845 return; 4846 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 4847 return; /* P2P module started a new operation */ 4848 if (offchannel_pending_action_tx(wpa_s)) 4849 return; 4850 if (wpa_s->p2p_long_listen > 0) 4851 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 4852 if (wpa_s->p2p_long_listen > 0) { 4853 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 4854 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 4855 } else { 4856 /* 4857 * When listen duration is over, stop listen & update p2p_state 4858 * to IDLE. 4859 */ 4860 p2p_stop_listen(wpa_s->global->p2p); 4861 } 4862} 4863 4864 4865/** 4866 * wpas_p2p_group_remove - Remove a P2P group 4867 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 4868 * @ifname: Network interface name of the group interface or "*" to remove all 4869 * groups 4870 * Returns: 0 on success, -1 on failure 4871 * 4872 * This function is used to remove a P2P group. This can be used to disconnect 4873 * from a group in which the local end is a P2P Client or to end a P2P Group in 4874 * case the local end is the Group Owner. If a virtual network interface was 4875 * created for this group, that interface will be removed. Otherwise, only the 4876 * configured P2P group network will be removed from the interface. 4877 */ 4878int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 4879{ 4880 struct wpa_global *global = wpa_s->global; 4881 4882 if (os_strcmp(ifname, "*") == 0) { 4883 struct wpa_supplicant *prev; 4884 wpa_s = global->ifaces; 4885 while (wpa_s) { 4886 prev = wpa_s; 4887 wpa_s = wpa_s->next; 4888 if (prev->p2p_group_interface != 4889 NOT_P2P_GROUP_INTERFACE || 4890 (prev->current_ssid && 4891 prev->current_ssid->p2p_group)) 4892 wpas_p2p_disconnect(prev); 4893 } 4894 return 0; 4895 } 4896 4897 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4898 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4899 break; 4900 } 4901 4902 return wpas_p2p_disconnect(wpa_s); 4903} 4904 4905 4906static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq) 4907{ 4908 unsigned int r; 4909 4910 if (freq == 2) { 4911 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 4912 "band"); 4913 if (wpa_s->best_24_freq > 0 && 4914 p2p_supported_freq_go(wpa_s->global->p2p, 4915 wpa_s->best_24_freq)) { 4916 freq = wpa_s->best_24_freq; 4917 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 4918 "channel: %d MHz", freq); 4919 } else { 4920 os_get_random((u8 *) &r, sizeof(r)); 4921 freq = 2412 + (r % 3) * 25; 4922 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 4923 "channel: %d MHz", freq); 4924 } 4925 } 4926 4927 if (freq == 5) { 4928 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 4929 "band"); 4930 if (wpa_s->best_5_freq > 0 && 4931 p2p_supported_freq_go(wpa_s->global->p2p, 4932 wpa_s->best_5_freq)) { 4933 freq = wpa_s->best_5_freq; 4934 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 4935 "channel: %d MHz", freq); 4936 } else { 4937 os_get_random((u8 *) &r, sizeof(r)); 4938 freq = 5180 + (r % 4) * 20; 4939 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 4940 wpa_printf(MSG_DEBUG, "P2P: Could not select " 4941 "5 GHz channel for P2P group"); 4942 return -1; 4943 } 4944 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 4945 "channel: %d MHz", freq); 4946 } 4947 } 4948 4949 if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) { 4950 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 4951 "(%u MHz) is not supported for P2P uses", 4952 freq); 4953 return -1; 4954 } 4955 4956 return freq; 4957} 4958 4959 4960static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 4961 struct p2p_go_neg_results *params, 4962 int freq, int ht40, int vht, 4963 const struct p2p_channels *channels) 4964{ 4965 int res, *freqs; 4966 unsigned int pref_freq; 4967 unsigned int num, i; 4968 4969 os_memset(params, 0, sizeof(*params)); 4970 params->role_go = 1; 4971 params->ht40 = ht40; 4972 params->vht = vht; 4973 if (freq) { 4974 if (!freq_included(channels, freq)) { 4975 wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not " 4976 "accepted", freq); 4977 return -1; 4978 } 4979 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 4980 "frequency %d MHz", freq); 4981 params->freq = freq; 4982 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 4983 wpa_s->conf->p2p_oper_channel >= 1 && 4984 wpa_s->conf->p2p_oper_channel <= 11 && 4985 freq_included(channels, 4986 2407 + 5 * wpa_s->conf->p2p_oper_channel)) { 4987 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 4988 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 4989 "frequency %d MHz", params->freq); 4990 } else if ((wpa_s->conf->p2p_oper_reg_class == 115 || 4991 wpa_s->conf->p2p_oper_reg_class == 116 || 4992 wpa_s->conf->p2p_oper_reg_class == 117 || 4993 wpa_s->conf->p2p_oper_reg_class == 124 || 4994 wpa_s->conf->p2p_oper_reg_class == 126 || 4995 wpa_s->conf->p2p_oper_reg_class == 127) && 4996 freq_included(channels, 4997 5000 + 5 * wpa_s->conf->p2p_oper_channel)) { 4998 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 4999 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 5000 "frequency %d MHz", params->freq); 5001 } else if (wpa_s->conf->p2p_oper_channel == 0 && 5002 wpa_s->best_overall_freq > 0 && 5003 p2p_supported_freq_go(wpa_s->global->p2p, 5004 wpa_s->best_overall_freq) && 5005 freq_included(channels, wpa_s->best_overall_freq)) { 5006 params->freq = wpa_s->best_overall_freq; 5007 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 5008 "channel %d MHz", params->freq); 5009 } else if (wpa_s->conf->p2p_oper_channel == 0 && 5010 wpa_s->best_24_freq > 0 && 5011 p2p_supported_freq_go(wpa_s->global->p2p, 5012 wpa_s->best_24_freq) && 5013 freq_included(channels, wpa_s->best_24_freq)) { 5014 params->freq = wpa_s->best_24_freq; 5015 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 5016 "channel %d MHz", params->freq); 5017 } else if (wpa_s->conf->p2p_oper_channel == 0 && 5018 wpa_s->best_5_freq > 0 && 5019 p2p_supported_freq_go(wpa_s->global->p2p, 5020 wpa_s->best_5_freq) && 5021 freq_included(channels, wpa_s->best_5_freq)) { 5022 params->freq = wpa_s->best_5_freq; 5023 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 5024 "channel %d MHz", params->freq); 5025 } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p, 5026 channels))) { 5027 params->freq = pref_freq; 5028 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred " 5029 "channels", params->freq); 5030 } else { 5031 int chan; 5032 for (chan = 0; chan < 11; chan++) { 5033 params->freq = 2412 + chan * 5; 5034 if (!wpas_p2p_disallowed_freq(wpa_s->global, 5035 params->freq) && 5036 freq_included(channels, params->freq)) 5037 break; 5038 } 5039 if (chan == 11) { 5040 wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " 5041 "allowed"); 5042 return -1; 5043 } 5044 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 5045 "known)", params->freq); 5046 } 5047 5048 freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int)); 5049 if (!freqs) 5050 return -1; 5051 5052 res = wpas_p2p_valid_oper_freqs(wpa_s, freqs, 5053 wpa_s->num_multichan_concurrent); 5054 if (res < 0) { 5055 os_free(freqs); 5056 return -1; 5057 } 5058 num = res; 5059 5060 for (i = 0; i < num; i++) { 5061 if (freq && freqs[i] == freq) 5062 break; 5063 if (!freq && freq_included(channels, freqs[i])) { 5064 wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)", 5065 freqs[i]); 5066 params->freq = freqs[i]; 5067 break; 5068 } 5069 } 5070 5071 if (i == num) { 5072 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) { 5073 if (freq) 5074 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq); 5075 else 5076 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using"); 5077 os_free(freqs); 5078 return -1; 5079 } else if (num == 0) { 5080 wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels"); 5081 } else { 5082 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels"); 5083 } 5084 } 5085 5086 os_free(freqs); 5087 return 0; 5088} 5089 5090 5091static struct wpa_supplicant * 5092wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 5093 int go) 5094{ 5095 struct wpa_supplicant *group_wpa_s; 5096 5097 if (!wpas_p2p_create_iface(wpa_s)) { 5098 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " 5099 "operations"); 5100 wpa_s->p2p_first_connection_timeout = 0; 5101 return wpa_s; 5102 } 5103 5104 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 5105 WPA_IF_P2P_CLIENT) < 0) { 5106 wpa_msg_global(wpa_s, MSG_ERROR, 5107 "P2P: Failed to add group interface"); 5108 return NULL; 5109 } 5110 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 5111 if (group_wpa_s == NULL) { 5112 wpa_msg_global(wpa_s, MSG_ERROR, 5113 "P2P: Failed to initialize group interface"); 5114 wpas_p2p_remove_pending_group_interface(wpa_s); 5115 return NULL; 5116 } 5117 5118 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", 5119 group_wpa_s->ifname); 5120 group_wpa_s->p2p_first_connection_timeout = 0; 5121 return group_wpa_s; 5122} 5123 5124 5125/** 5126 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 5127 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 5128 * @persistent_group: Whether to create a persistent group 5129 * @freq: Frequency for the group or 0 to indicate no hardcoding 5130 * @ht40: Start GO with 40 MHz channel width 5131 * @vht: Start GO with VHT support 5132 * Returns: 0 on success, -1 on failure 5133 * 5134 * This function creates a new P2P group with the local end as the Group Owner, 5135 * i.e., without using Group Owner Negotiation. 5136 */ 5137int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 5138 int freq, int ht40, int vht) 5139{ 5140 struct p2p_go_neg_results params; 5141 5142 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5143 return -1; 5144 5145 os_free(wpa_s->global->add_psk); 5146 wpa_s->global->add_psk = NULL; 5147 5148 /* Make sure we are not running find during connection establishment */ 5149 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 5150 wpas_p2p_stop_find_oper(wpa_s); 5151 5152 freq = wpas_p2p_select_go_freq(wpa_s, freq); 5153 if (freq < 0) 5154 return -1; 5155 5156 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, NULL)) 5157 return -1; 5158 if (params.freq && 5159 !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) { 5160 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " 5161 "(%u MHz) is not supported for P2P uses", 5162 params.freq); 5163 return -1; 5164 } 5165 p2p_go_params(wpa_s->global->p2p, ¶ms); 5166 params.persistent_group = persistent_group; 5167 5168 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 5169 if (wpa_s == NULL) 5170 return -1; 5171 wpas_start_wps_go(wpa_s, ¶ms, 0); 5172 5173 return 0; 5174} 5175 5176 5177static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 5178 struct wpa_ssid *params, int addr_allocated, 5179 int freq) 5180{ 5181 struct wpa_ssid *ssid; 5182 5183 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 5184 if (wpa_s == NULL) 5185 return -1; 5186 wpa_s->p2p_last_4way_hs_fail = NULL; 5187 5188 wpa_supplicant_ap_deinit(wpa_s); 5189 5190 ssid = wpa_config_add_network(wpa_s->conf); 5191 if (ssid == NULL) 5192 return -1; 5193 wpa_config_set_network_defaults(ssid); 5194 ssid->temporary = 1; 5195 ssid->proto = WPA_PROTO_RSN; 5196 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 5197 ssid->group_cipher = WPA_CIPHER_CCMP; 5198 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 5199 ssid->ssid = os_malloc(params->ssid_len); 5200 if (ssid->ssid == NULL) { 5201 wpa_config_remove_network(wpa_s->conf, ssid->id); 5202 return -1; 5203 } 5204 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 5205 ssid->ssid_len = params->ssid_len; 5206 ssid->p2p_group = 1; 5207 ssid->export_keys = 1; 5208 if (params->psk_set) { 5209 os_memcpy(ssid->psk, params->psk, 32); 5210 ssid->psk_set = 1; 5211 } 5212 if (params->passphrase) 5213 ssid->passphrase = os_strdup(params->passphrase); 5214 5215 wpa_s->show_group_started = 1; 5216 wpa_s->p2p_in_invitation = 1; 5217 wpa_s->p2p_invite_go_freq = freq; 5218 5219 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 5220 NULL); 5221 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 5222 wpas_p2p_group_formation_timeout, 5223 wpa_s->parent, NULL); 5224 wpa_supplicant_select_network(wpa_s, ssid); 5225 5226 return 0; 5227} 5228 5229 5230int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 5231 struct wpa_ssid *ssid, int addr_allocated, 5232 int force_freq, int neg_freq, int ht40, 5233 int vht, const struct p2p_channels *channels, 5234 int connection_timeout) 5235{ 5236 struct p2p_go_neg_results params; 5237 int go = 0, freq; 5238 5239 if (ssid->disabled != 2 || ssid->ssid == NULL) 5240 return -1; 5241 5242 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 5243 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 5244 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 5245 "already running"); 5246 return 0; 5247 } 5248 5249 os_free(wpa_s->global->add_psk); 5250 wpa_s->global->add_psk = NULL; 5251 5252 /* Make sure we are not running find during connection establishment */ 5253 wpas_p2p_stop_find_oper(wpa_s); 5254 5255 wpa_s->p2p_fallback_to_go_neg = 0; 5256 5257 if (force_freq > 0) { 5258 freq = wpas_p2p_select_go_freq(wpa_s, force_freq); 5259 if (freq < 0) 5260 return -1; 5261 } else { 5262 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq); 5263 if (freq < 0 || (freq > 0 && !freq_included(channels, freq))) 5264 freq = 0; 5265 } 5266 5267 if (ssid->mode == WPAS_MODE_INFRA) 5268 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq); 5269 5270 if (ssid->mode != WPAS_MODE_P2P_GO) 5271 return -1; 5272 5273 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40, vht, channels)) 5274 return -1; 5275 5276 params.role_go = 1; 5277 params.psk_set = ssid->psk_set; 5278 if (params.psk_set) 5279 os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); 5280 if (ssid->passphrase) { 5281 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 5282 wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " 5283 "persistent group"); 5284 return -1; 5285 } 5286 os_strlcpy(params.passphrase, ssid->passphrase, 5287 sizeof(params.passphrase)); 5288 } 5289 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 5290 params.ssid_len = ssid->ssid_len; 5291 params.persistent_group = 1; 5292 5293 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 5294 if (wpa_s == NULL) 5295 return -1; 5296 5297 wpa_s->p2p_first_connection_timeout = connection_timeout; 5298 wpas_start_wps_go(wpa_s, ¶ms, 0); 5299 5300 return 0; 5301} 5302 5303 5304static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 5305 struct wpabuf *proberesp_ies) 5306{ 5307 struct wpa_supplicant *wpa_s = ctx; 5308 if (wpa_s->ap_iface) { 5309 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 5310 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 5311 wpabuf_free(beacon_ies); 5312 wpabuf_free(proberesp_ies); 5313 return; 5314 } 5315 if (beacon_ies) { 5316 wpabuf_free(hapd->p2p_beacon_ie); 5317 hapd->p2p_beacon_ie = beacon_ies; 5318 } 5319 wpabuf_free(hapd->p2p_probe_resp_ie); 5320 hapd->p2p_probe_resp_ie = proberesp_ies; 5321 } else { 5322 wpabuf_free(beacon_ies); 5323 wpabuf_free(proberesp_ies); 5324 } 5325 wpa_supplicant_ap_update_beacon(wpa_s); 5326} 5327 5328 5329static void wpas_p2p_idle_update(void *ctx, int idle) 5330{ 5331 struct wpa_supplicant *wpa_s = ctx; 5332 if (!wpa_s->ap_iface) 5333 return; 5334 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 5335 if (idle) { 5336 if (wpa_s->global->p2p_fail_on_wps_complete && 5337 wpa_s->p2p_in_provisioning) { 5338 wpas_p2p_grpform_fail_after_wps(wpa_s); 5339 return; 5340 } 5341 wpas_p2p_set_group_idle_timeout(wpa_s); 5342 } else 5343 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 5344} 5345 5346 5347struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 5348 struct wpa_ssid *ssid) 5349{ 5350 struct p2p_group *group; 5351 struct p2p_group_config *cfg; 5352 5353 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5354 return NULL; 5355 5356 cfg = os_zalloc(sizeof(*cfg)); 5357 if (cfg == NULL) 5358 return NULL; 5359 5360 if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) 5361 cfg->persistent_group = 2; 5362 else if (ssid->p2p_persistent_group) 5363 cfg->persistent_group = 1; 5364 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 5365 if (wpa_s->max_stations && 5366 wpa_s->max_stations < wpa_s->conf->max_num_sta) 5367 cfg->max_clients = wpa_s->max_stations; 5368 else 5369 cfg->max_clients = wpa_s->conf->max_num_sta; 5370 os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); 5371 cfg->ssid_len = ssid->ssid_len; 5372 cfg->freq = ssid->frequency; 5373 cfg->cb_ctx = wpa_s; 5374 cfg->ie_update = wpas_p2p_ie_update; 5375 cfg->idle_update = wpas_p2p_idle_update; 5376 5377 group = p2p_group_init(wpa_s->global->p2p, cfg); 5378 if (group == NULL) 5379 os_free(cfg); 5380 if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) 5381 p2p_group_notif_formation_done(group); 5382 wpa_s->p2p_group = group; 5383 return group; 5384} 5385 5386 5387void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5388 int registrar) 5389{ 5390 struct wpa_ssid *ssid = wpa_s->current_ssid; 5391 5392 if (!wpa_s->p2p_in_provisioning) { 5393 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 5394 "provisioning not in progress"); 5395 return; 5396 } 5397 5398 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 5399 u8 go_dev_addr[ETH_ALEN]; 5400 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); 5401 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 5402 ssid->ssid_len); 5403 /* Clear any stored provisioning info */ 5404 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); 5405 } 5406 5407 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 5408 NULL); 5409 wpa_s->p2p_go_group_formation_completed = 1; 5410 if (ssid && ssid->mode == WPAS_MODE_INFRA) { 5411 /* 5412 * Use a separate timeout for initial data connection to 5413 * complete to allow the group to be removed automatically if 5414 * something goes wrong in this step before the P2P group idle 5415 * timeout mechanism is taken into use. 5416 */ 5417 wpa_dbg(wpa_s, MSG_DEBUG, 5418 "P2P: Re-start group formation timeout (%d seconds) as client for initial connection", 5419 P2P_MAX_INITIAL_CONN_WAIT); 5420 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, 5421 wpas_p2p_group_formation_timeout, 5422 wpa_s->parent, NULL); 5423 } else if (ssid) { 5424 /* 5425 * Use a separate timeout for initial data connection to 5426 * complete to allow the group to be removed automatically if 5427 * the client does not complete data connection successfully. 5428 */ 5429 wpa_dbg(wpa_s, MSG_DEBUG, 5430 "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection", 5431 P2P_MAX_INITIAL_CONN_WAIT_GO); 5432 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0, 5433 wpas_p2p_group_formation_timeout, 5434 wpa_s->parent, NULL); 5435 /* 5436 * Complete group formation on first successful data connection 5437 */ 5438 wpa_s->p2p_go_group_formation_completed = 0; 5439 } 5440 if (wpa_s->global->p2p) 5441 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 5442 wpas_group_formation_completed(wpa_s, 1); 5443} 5444 5445 5446void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 5447 struct wps_event_fail *fail) 5448{ 5449 if (!wpa_s->p2p_in_provisioning) { 5450 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 5451 "provisioning not in progress"); 5452 return; 5453 } 5454 5455 if (wpa_s->go_params) { 5456 p2p_clear_provisioning_info( 5457 wpa_s->global->p2p, 5458 wpa_s->go_params->peer_device_addr); 5459 } 5460 5461 wpas_notify_p2p_wps_failed(wpa_s, fail); 5462 5463 if (wpa_s == wpa_s->global->p2p_group_formation) { 5464 /* 5465 * Allow some time for the failed WPS negotiation exchange to 5466 * complete, but remove the group since group formation cannot 5467 * succeed after provisioning failure. 5468 */ 5469 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout"); 5470 wpa_s->global->p2p_fail_on_wps_complete = 1; 5471 eloop_deplete_timeout(0, 50000, 5472 wpas_p2p_group_formation_timeout, 5473 wpa_s->parent, NULL); 5474 } 5475} 5476 5477 5478int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s) 5479{ 5480 if (!wpa_s->global->p2p_fail_on_wps_complete || 5481 !wpa_s->p2p_in_provisioning) 5482 return 0; 5483 5484 wpas_p2p_grpform_fail_after_wps(wpa_s); 5485 5486 return 1; 5487} 5488 5489 5490int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5491 const char *config_method, 5492 enum wpas_p2p_prov_disc_use use) 5493{ 5494 u16 config_methods; 5495 5496 wpa_s->p2p_fallback_to_go_neg = 0; 5497 wpa_s->pending_pd_use = NORMAL_PD; 5498 if (os_strncmp(config_method, "display", 7) == 0) 5499 config_methods = WPS_CONFIG_DISPLAY; 5500 else if (os_strncmp(config_method, "keypad", 6) == 0) 5501 config_methods = WPS_CONFIG_KEYPAD; 5502 else if (os_strncmp(config_method, "pbc", 3) == 0 || 5503 os_strncmp(config_method, "pushbutton", 10) == 0) 5504 config_methods = WPS_CONFIG_PUSHBUTTON; 5505 else { 5506 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 5507 return -1; 5508 } 5509 5510 if (use == WPAS_P2P_PD_AUTO) { 5511 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); 5512 wpa_s->pending_pd_config_methods = config_methods; 5513 wpa_s->p2p_auto_pd = 1; 5514 wpa_s->p2p_auto_join = 0; 5515 wpa_s->pending_pd_before_join = 0; 5516 wpa_s->auto_pd_scan_retry = 0; 5517 wpas_p2p_stop_find(wpa_s); 5518 wpa_s->p2p_join_scan_count = 0; 5519 os_get_reltime(&wpa_s->p2p_auto_started); 5520 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", 5521 wpa_s->p2p_auto_started.sec, 5522 wpa_s->p2p_auto_started.usec); 5523 wpas_p2p_join_scan(wpa_s, NULL); 5524 return 0; 5525 } 5526 5527 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 5528 return -1; 5529 5530 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 5531 config_methods, use == WPAS_P2P_PD_FOR_JOIN, 5532 0, 1); 5533} 5534 5535 5536int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 5537 char *end) 5538{ 5539 return p2p_scan_result_text(ies, ies_len, buf, end); 5540} 5541 5542 5543static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 5544{ 5545 if (!offchannel_pending_action_tx(wpa_s)) 5546 return; 5547 5548 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 5549 "operation request"); 5550 offchannel_clear_pending_action_tx(wpa_s); 5551} 5552 5553 5554int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 5555 enum p2p_discovery_type type, 5556 unsigned int num_req_dev_types, const u8 *req_dev_types, 5557 const u8 *dev_id, unsigned int search_delay) 5558{ 5559 wpas_p2p_clear_pending_action_tx(wpa_s); 5560 wpa_s->p2p_long_listen = 0; 5561 5562 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || 5563 wpa_s->p2p_in_provisioning) 5564 return -1; 5565 5566 wpa_supplicant_cancel_sched_scan(wpa_s); 5567 5568 return p2p_find(wpa_s->global->p2p, timeout, type, 5569 num_req_dev_types, req_dev_types, dev_id, 5570 search_delay); 5571} 5572 5573 5574static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) 5575{ 5576 wpas_p2p_clear_pending_action_tx(wpa_s); 5577 wpa_s->p2p_long_listen = 0; 5578 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 5579 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 5580 5581 if (wpa_s->global->p2p) 5582 p2p_stop_find(wpa_s->global->p2p); 5583 5584 return 0; 5585} 5586 5587 5588void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 5589{ 5590 if (wpas_p2p_stop_find_oper(wpa_s) > 0) 5591 return; 5592 wpas_p2p_remove_pending_group_interface(wpa_s); 5593} 5594 5595 5596static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 5597{ 5598 struct wpa_supplicant *wpa_s = eloop_ctx; 5599 wpa_s->p2p_long_listen = 0; 5600} 5601 5602 5603int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 5604{ 5605 int res; 5606 5607 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5608 return -1; 5609 5610 wpa_supplicant_cancel_sched_scan(wpa_s); 5611 wpas_p2p_clear_pending_action_tx(wpa_s); 5612 5613 if (timeout == 0) { 5614 /* 5615 * This is a request for unlimited Listen state. However, at 5616 * least for now, this is mapped to a Listen state for one 5617 * hour. 5618 */ 5619 timeout = 3600; 5620 } 5621 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 5622 wpa_s->p2p_long_listen = 0; 5623 5624 /* 5625 * Stop previous find/listen operation to avoid trying to request a new 5626 * remain-on-channel operation while the driver is still running the 5627 * previous one. 5628 */ 5629 if (wpa_s->global->p2p) 5630 p2p_stop_find(wpa_s->global->p2p); 5631 5632 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 5633 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 5634 wpa_s->p2p_long_listen = timeout * 1000; 5635 eloop_register_timeout(timeout, 0, 5636 wpas_p2p_long_listen_timeout, 5637 wpa_s, NULL); 5638 } 5639 5640 return res; 5641} 5642 5643 5644int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 5645 u8 *buf, size_t len, int p2p_group) 5646{ 5647 struct wpabuf *p2p_ie; 5648 int ret; 5649 5650 if (wpa_s->global->p2p_disabled) 5651 return -1; 5652 if (wpa_s->global->p2p == NULL) 5653 return -1; 5654 if (bss == NULL) 5655 return -1; 5656 5657 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 5658 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 5659 p2p_group, p2p_ie); 5660 wpabuf_free(p2p_ie); 5661 5662 return ret; 5663} 5664 5665 5666int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 5667 const u8 *dst, const u8 *bssid, 5668 const u8 *ie, size_t ie_len, int ssi_signal) 5669{ 5670 if (wpa_s->global->p2p_disabled) 5671 return 0; 5672 if (wpa_s->global->p2p == NULL) 5673 return 0; 5674 5675 switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 5676 ie, ie_len)) { 5677 case P2P_PREQ_NOT_P2P: 5678 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, 5679 ssi_signal); 5680 /* fall through */ 5681 case P2P_PREQ_MALFORMED: 5682 case P2P_PREQ_NOT_LISTEN: 5683 case P2P_PREQ_NOT_PROCESSED: 5684 default: /* make gcc happy */ 5685 return 0; 5686 case P2P_PREQ_PROCESSED: 5687 return 1; 5688 } 5689} 5690 5691 5692void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 5693 const u8 *sa, const u8 *bssid, 5694 u8 category, const u8 *data, size_t len, int freq) 5695{ 5696 if (wpa_s->global->p2p_disabled) 5697 return; 5698 if (wpa_s->global->p2p == NULL) 5699 return; 5700 5701 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 5702 freq); 5703} 5704 5705 5706void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 5707{ 5708 if (wpa_s->global->p2p_disabled) 5709 return; 5710 if (wpa_s->global->p2p == NULL) 5711 return; 5712 5713 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 5714} 5715 5716 5717void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 5718{ 5719 p2p_group_deinit(wpa_s->p2p_group); 5720 wpa_s->p2p_group = NULL; 5721 5722 wpa_s->ap_configured_cb = NULL; 5723 wpa_s->ap_configured_cb_ctx = NULL; 5724 wpa_s->ap_configured_cb_data = NULL; 5725 wpa_s->connect_without_scan = NULL; 5726} 5727 5728 5729int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 5730{ 5731 wpa_s->p2p_long_listen = 0; 5732 5733 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5734 return -1; 5735 5736 return p2p_reject(wpa_s->global->p2p, addr); 5737} 5738 5739 5740/* Invite to reinvoke a persistent group */ 5741int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 5742 struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, 5743 int ht40, int vht, int pref_freq) 5744{ 5745 enum p2p_invite_role role; 5746 u8 *bssid = NULL; 5747 int force_freq = 0; 5748 int res; 5749 int no_pref_freq_given = pref_freq == 0; 5750 5751 wpa_s->global->p2p_invite_group = NULL; 5752 if (peer_addr) 5753 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 5754 else 5755 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN); 5756 5757 wpa_s->p2p_persistent_go_freq = freq; 5758 wpa_s->p2p_go_ht40 = !!ht40; 5759 if (ssid->mode == WPAS_MODE_P2P_GO) { 5760 role = P2P_INVITE_ROLE_GO; 5761 if (peer_addr == NULL) { 5762 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 5763 "address in invitation command"); 5764 return -1; 5765 } 5766 if (wpas_p2p_create_iface(wpa_s)) { 5767 if (wpas_p2p_add_group_interface(wpa_s, 5768 WPA_IF_P2P_GO) < 0) { 5769 wpa_printf(MSG_ERROR, "P2P: Failed to " 5770 "allocate a new interface for the " 5771 "group"); 5772 return -1; 5773 } 5774 bssid = wpa_s->pending_interface_addr; 5775 } else 5776 bssid = wpa_s->own_addr; 5777 } else { 5778 role = P2P_INVITE_ROLE_CLIENT; 5779 peer_addr = ssid->bssid; 5780 } 5781 wpa_s->pending_invite_ssid_id = ssid->id; 5782 5783 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5784 role == P2P_INVITE_ROLE_GO); 5785 if (res) 5786 return res; 5787 5788 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5789 return -1; 5790 5791 if (wpa_s->parent->conf->p2p_ignore_shared_freq && 5792 no_pref_freq_given && pref_freq > 0 && 5793 wpa_s->num_multichan_concurrent > 1 && 5794 wpas_p2p_num_unused_channels(wpa_s) > 0) { 5795 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration", 5796 pref_freq); 5797 pref_freq = 0; 5798 } 5799 5800 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 5801 ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr, 5802 1, pref_freq, -1); 5803} 5804 5805 5806/* Invite to join an active group */ 5807int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 5808 const u8 *peer_addr, const u8 *go_dev_addr) 5809{ 5810 struct wpa_global *global = wpa_s->global; 5811 enum p2p_invite_role role; 5812 u8 *bssid = NULL; 5813 struct wpa_ssid *ssid; 5814 int persistent; 5815 int freq = 0, force_freq = 0, pref_freq = 0; 5816 int res; 5817 5818 wpa_s->p2p_persistent_go_freq = 0; 5819 wpa_s->p2p_go_ht40 = 0; 5820 wpa_s->p2p_go_vht = 0; 5821 5822 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5823 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5824 break; 5825 } 5826 if (wpa_s == NULL) { 5827 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 5828 return -1; 5829 } 5830 5831 ssid = wpa_s->current_ssid; 5832 if (ssid == NULL) { 5833 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 5834 "invitation"); 5835 return -1; 5836 } 5837 5838 wpa_s->global->p2p_invite_group = wpa_s; 5839 persistent = ssid->p2p_persistent_group && 5840 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 5841 ssid->ssid, ssid->ssid_len); 5842 5843 if (ssid->mode == WPAS_MODE_P2P_GO) { 5844 role = P2P_INVITE_ROLE_ACTIVE_GO; 5845 bssid = wpa_s->own_addr; 5846 if (go_dev_addr == NULL) 5847 go_dev_addr = wpa_s->global->p2p_dev_addr; 5848 freq = ssid->frequency; 5849 } else { 5850 role = P2P_INVITE_ROLE_CLIENT; 5851 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 5852 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 5853 "invite to current group"); 5854 return -1; 5855 } 5856 bssid = wpa_s->bssid; 5857 if (go_dev_addr == NULL && 5858 !is_zero_ether_addr(wpa_s->go_dev_addr)) 5859 go_dev_addr = wpa_s->go_dev_addr; 5860 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 5861 (int) wpa_s->assoc_freq; 5862 } 5863 wpa_s->parent->pending_invite_ssid_id = -1; 5864 5865 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5866 return -1; 5867 5868 res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq, 5869 role == P2P_INVITE_ROLE_ACTIVE_GO); 5870 if (res) 5871 return res; 5872 wpas_p2p_set_own_freq_preference(wpa_s, force_freq); 5873 5874 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 5875 ssid->ssid, ssid->ssid_len, force_freq, 5876 go_dev_addr, persistent, pref_freq, -1); 5877} 5878 5879 5880void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 5881{ 5882 struct wpa_ssid *ssid = wpa_s->current_ssid; 5883 const char *ssid_txt; 5884 u8 go_dev_addr[ETH_ALEN]; 5885 int network_id = -1; 5886 int persistent; 5887 int freq; 5888 u8 ip[3 * 4]; 5889 char ip_addr[100]; 5890 5891 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { 5892 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 5893 wpa_s->parent, NULL); 5894 } 5895 5896 if (!wpa_s->show_group_started || !ssid) 5897 return; 5898 5899 wpa_s->show_group_started = 0; 5900 5901 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 5902 os_memset(go_dev_addr, 0, ETH_ALEN); 5903 if (ssid->bssid_set) 5904 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 5905 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 5906 ssid->ssid_len); 5907 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 5908 5909 if (wpa_s->global->p2p_group_formation == wpa_s) 5910 wpa_s->global->p2p_group_formation = NULL; 5911 5912 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 5913 (int) wpa_s->assoc_freq; 5914 5915 ip_addr[0] = '\0'; 5916 if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) { 5917 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u " 5918 "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u", 5919 ip[0], ip[1], ip[2], ip[3], 5920 ip[4], ip[5], ip[6], ip[7], 5921 ip[8], ip[9], ip[10], ip[11]); 5922 } 5923 5924 if (ssid->passphrase == NULL && ssid->psk_set) { 5925 char psk[65]; 5926 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 5927 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 5928 "%s client ssid=\"%s\" freq=%d psk=%s " 5929 "go_dev_addr=" MACSTR "%s%s", 5930 wpa_s->ifname, ssid_txt, freq, psk, 5931 MAC2STR(go_dev_addr), 5932 persistent ? " [PERSISTENT]" : "", ip_addr); 5933 } else { 5934 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 5935 "%s client ssid=\"%s\" freq=%d " 5936 "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s", 5937 wpa_s->ifname, ssid_txt, freq, 5938 ssid->passphrase ? ssid->passphrase : "", 5939 MAC2STR(go_dev_addr), 5940 persistent ? " [PERSISTENT]" : "", ip_addr); 5941 } 5942 5943 if (persistent) 5944 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 5945 ssid, go_dev_addr); 5946 if (network_id < 0) 5947 network_id = ssid->id; 5948 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 5949} 5950 5951 5952int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 5953 u32 interval1, u32 duration2, u32 interval2) 5954{ 5955 int ret; 5956 5957 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5958 return -1; 5959 5960 if (wpa_s->wpa_state < WPA_ASSOCIATED || 5961 wpa_s->current_ssid == NULL || 5962 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 5963 return -1; 5964 5965 ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 5966 wpa_s->own_addr, wpa_s->assoc_freq, 5967 duration1, interval1, duration2, interval2); 5968 if (ret == 0) 5969 wpa_s->waiting_presence_resp = 1; 5970 5971 return ret; 5972} 5973 5974 5975int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 5976 unsigned int interval) 5977{ 5978 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 5979 return -1; 5980 5981 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 5982} 5983 5984 5985static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 5986{ 5987 if (wpa_s->current_ssid == NULL) { 5988 /* 5989 * current_ssid can be cleared when P2P client interface gets 5990 * disconnected, so assume this interface was used as P2P 5991 * client. 5992 */ 5993 return 1; 5994 } 5995 return wpa_s->current_ssid->p2p_group && 5996 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 5997} 5998 5999 6000static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 6001{ 6002 struct wpa_supplicant *wpa_s = eloop_ctx; 6003 6004 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 6005 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 6006 "disabled"); 6007 return; 6008 } 6009 6010 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " 6011 "group"); 6012 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); 6013} 6014 6015 6016static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 6017{ 6018 int timeout; 6019 6020 if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 6021 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 6022 6023 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 6024 return; 6025 6026 timeout = wpa_s->conf->p2p_group_idle; 6027 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 6028 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 6029 timeout = P2P_MAX_CLIENT_IDLE; 6030 6031 if (timeout == 0) 6032 return; 6033 6034 if (timeout < 0) { 6035 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) 6036 timeout = 0; /* special client mode no-timeout */ 6037 else 6038 return; 6039 } 6040 6041 if (wpa_s->p2p_in_provisioning) { 6042 /* 6043 * Use the normal group formation timeout during the 6044 * provisioning phase to avoid terminating this process too 6045 * early due to group idle timeout. 6046 */ 6047 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 6048 "during provisioning"); 6049 return; 6050 } 6051 6052 if (wpa_s->show_group_started) { 6053 /* 6054 * Use the normal group formation timeout between the end of 6055 * the provisioning phase and completion of 4-way handshake to 6056 * avoid terminating this process too early due to group idle 6057 * timeout. 6058 */ 6059 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " 6060 "while waiting for initial 4-way handshake to " 6061 "complete"); 6062 return; 6063 } 6064 6065 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 6066 timeout); 6067 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 6068 wpa_s, NULL); 6069} 6070 6071 6072/* Returns 1 if the interface was removed */ 6073int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 6074 u16 reason_code, const u8 *ie, size_t ie_len, 6075 int locally_generated) 6076{ 6077 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6078 return 0; 6079 6080 if (!locally_generated) 6081 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, 6082 ie_len); 6083 6084 if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && 6085 wpa_s->current_ssid && 6086 wpa_s->current_ssid->p2p_group && 6087 wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { 6088 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " 6089 "session is ending"); 6090 if (wpas_p2p_group_delete(wpa_s, 6091 P2P_GROUP_REMOVAL_GO_ENDING_SESSION) 6092 > 0) 6093 return 1; 6094 } 6095 6096 return 0; 6097} 6098 6099 6100void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 6101 u16 reason_code, const u8 *ie, size_t ie_len, 6102 int locally_generated) 6103{ 6104 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6105 return; 6106 6107 if (!locally_generated) 6108 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, 6109 ie_len); 6110} 6111 6112 6113void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 6114{ 6115 struct p2p_data *p2p = wpa_s->global->p2p; 6116 6117 if (p2p == NULL) 6118 return; 6119 6120 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 6121 return; 6122 6123 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 6124 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 6125 6126 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 6127 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 6128 6129 if (wpa_s->wps && 6130 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 6131 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 6132 6133 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 6134 p2p_set_uuid(p2p, wpa_s->wps->uuid); 6135 6136 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 6137 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 6138 p2p_set_model_name(p2p, wpa_s->conf->model_name); 6139 p2p_set_model_number(p2p, wpa_s->conf->model_number); 6140 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 6141 } 6142 6143 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 6144 p2p_set_sec_dev_types(p2p, 6145 (void *) wpa_s->conf->sec_device_type, 6146 wpa_s->conf->num_sec_device_types); 6147 6148 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 6149 int i; 6150 p2p_remove_wps_vendor_extensions(p2p); 6151 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 6152 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 6153 continue; 6154 p2p_add_wps_vendor_extension( 6155 p2p, wpa_s->conf->wps_vendor_ext[i]); 6156 } 6157 } 6158 6159 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 6160 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 6161 char country[3]; 6162 country[0] = wpa_s->conf->country[0]; 6163 country[1] = wpa_s->conf->country[1]; 6164 country[2] = 0x04; 6165 p2p_set_country(p2p, country); 6166 } 6167 6168 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 6169 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 6170 wpa_s->conf->p2p_ssid_postfix ? 6171 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 6172 0); 6173 } 6174 6175 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 6176 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 6177 6178 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 6179 u8 reg_class, channel; 6180 int ret; 6181 unsigned int r; 6182 if (wpa_s->conf->p2p_listen_reg_class && 6183 wpa_s->conf->p2p_listen_channel) { 6184 reg_class = wpa_s->conf->p2p_listen_reg_class; 6185 channel = wpa_s->conf->p2p_listen_channel; 6186 } else { 6187 reg_class = 81; 6188 /* 6189 * Pick one of the social channels randomly as the 6190 * listen channel. 6191 */ 6192 os_get_random((u8 *) &r, sizeof(r)); 6193 channel = 1 + (r % 3) * 5; 6194 } 6195 ret = p2p_set_listen_channel(p2p, reg_class, channel); 6196 if (ret) 6197 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 6198 "failed: %d", ret); 6199 } 6200 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 6201 u8 op_reg_class, op_channel, cfg_op_channel; 6202 int ret = 0; 6203 unsigned int r; 6204 if (wpa_s->conf->p2p_oper_reg_class && 6205 wpa_s->conf->p2p_oper_channel) { 6206 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 6207 op_channel = wpa_s->conf->p2p_oper_channel; 6208 cfg_op_channel = 1; 6209 } else { 6210 op_reg_class = 81; 6211 /* 6212 * Use random operation channel from (1, 6, 11) 6213 *if no other preference is indicated. 6214 */ 6215 os_get_random((u8 *) &r, sizeof(r)); 6216 op_channel = 1 + (r % 3) * 5; 6217 cfg_op_channel = 0; 6218 } 6219 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 6220 cfg_op_channel); 6221 if (ret) 6222 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 6223 "failed: %d", ret); 6224 } 6225 6226 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { 6227 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, 6228 wpa_s->conf->p2p_pref_chan) < 0) { 6229 wpa_printf(MSG_ERROR, "P2P: Preferred channel list " 6230 "update failed"); 6231 } 6232 6233 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) { 6234 wpa_printf(MSG_ERROR, "P2P: No GO channel list " 6235 "update failed"); 6236 } 6237 } 6238} 6239 6240 6241int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 6242 int duration) 6243{ 6244 if (!wpa_s->ap_iface) 6245 return -1; 6246 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 6247 duration); 6248} 6249 6250 6251int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 6252{ 6253 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6254 return -1; 6255 6256 wpa_s->global->cross_connection = enabled; 6257 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 6258 6259 if (!enabled) { 6260 struct wpa_supplicant *iface; 6261 6262 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 6263 { 6264 if (iface->cross_connect_enabled == 0) 6265 continue; 6266 6267 iface->cross_connect_enabled = 0; 6268 iface->cross_connect_in_use = 0; 6269 wpa_msg_global(iface->parent, MSG_INFO, 6270 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 6271 iface->ifname, 6272 iface->cross_connect_uplink); 6273 } 6274 } 6275 6276 return 0; 6277} 6278 6279 6280static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 6281{ 6282 struct wpa_supplicant *iface; 6283 6284 if (!uplink->global->cross_connection) 6285 return; 6286 6287 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 6288 if (!iface->cross_connect_enabled) 6289 continue; 6290 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 6291 0) 6292 continue; 6293 if (iface->ap_iface == NULL) 6294 continue; 6295 if (iface->cross_connect_in_use) 6296 continue; 6297 6298 iface->cross_connect_in_use = 1; 6299 wpa_msg_global(iface->parent, MSG_INFO, 6300 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 6301 iface->ifname, iface->cross_connect_uplink); 6302 } 6303} 6304 6305 6306static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 6307{ 6308 struct wpa_supplicant *iface; 6309 6310 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 6311 if (!iface->cross_connect_enabled) 6312 continue; 6313 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 6314 0) 6315 continue; 6316 if (!iface->cross_connect_in_use) 6317 continue; 6318 6319 wpa_msg_global(iface->parent, MSG_INFO, 6320 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 6321 iface->ifname, iface->cross_connect_uplink); 6322 iface->cross_connect_in_use = 0; 6323 } 6324} 6325 6326 6327void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 6328{ 6329 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 6330 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 6331 wpa_s->cross_connect_disallowed) 6332 wpas_p2p_disable_cross_connect(wpa_s); 6333 else 6334 wpas_p2p_enable_cross_connect(wpa_s); 6335 if (!wpa_s->ap_iface && 6336 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) 6337 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); 6338} 6339 6340 6341void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 6342{ 6343 wpas_p2p_disable_cross_connect(wpa_s); 6344 if (!wpa_s->ap_iface && 6345 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 6346 wpa_s, NULL)) 6347 wpas_p2p_set_group_idle_timeout(wpa_s); 6348} 6349 6350 6351static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 6352{ 6353 struct wpa_supplicant *iface; 6354 6355 if (!wpa_s->global->cross_connection) 6356 return; 6357 6358 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 6359 if (iface == wpa_s) 6360 continue; 6361 if (iface->drv_flags & 6362 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 6363 continue; 6364 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 6365 continue; 6366 6367 wpa_s->cross_connect_enabled = 1; 6368 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 6369 sizeof(wpa_s->cross_connect_uplink)); 6370 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 6371 "%s to %s whenever uplink is available", 6372 wpa_s->ifname, wpa_s->cross_connect_uplink); 6373 6374 if (iface->ap_iface || iface->current_ssid == NULL || 6375 iface->current_ssid->mode != WPAS_MODE_INFRA || 6376 iface->cross_connect_disallowed || 6377 iface->wpa_state != WPA_COMPLETED) 6378 break; 6379 6380 wpa_s->cross_connect_in_use = 1; 6381 wpa_msg_global(wpa_s->parent, MSG_INFO, 6382 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 6383 wpa_s->ifname, wpa_s->cross_connect_uplink); 6384 break; 6385 } 6386} 6387 6388 6389int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 6390{ 6391 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 6392 !wpa_s->p2p_in_provisioning) 6393 return 0; /* not P2P client operation */ 6394 6395 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 6396 "session overlap"); 6397 if (wpa_s != wpa_s->parent) 6398 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 6399 wpas_p2p_group_formation_failed(wpa_s); 6400 return 1; 6401} 6402 6403 6404void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) 6405{ 6406 struct wpa_supplicant *wpa_s = eloop_ctx; 6407 wpas_p2p_notif_pbc_overlap(wpa_s); 6408} 6409 6410 6411void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 6412{ 6413 struct p2p_channels chan, cli_chan; 6414 6415 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 6416 return; 6417 6418 os_memset(&chan, 0, sizeof(chan)); 6419 os_memset(&cli_chan, 0, sizeof(cli_chan)); 6420 if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) { 6421 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 6422 "channel list"); 6423 return; 6424 } 6425 6426 p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan); 6427} 6428 6429 6430static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, 6431 struct wpa_scan_results *scan_res) 6432{ 6433 wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); 6434} 6435 6436 6437int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 6438{ 6439 struct wpa_global *global = wpa_s->global; 6440 int found = 0; 6441 const u8 *peer; 6442 6443 if (global->p2p == NULL) 6444 return -1; 6445 6446 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 6447 6448 if (wpa_s->pending_interface_name[0] && 6449 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 6450 found = 1; 6451 6452 peer = p2p_get_go_neg_peer(global->p2p); 6453 if (peer) { 6454 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 6455 MACSTR, MAC2STR(peer)); 6456 p2p_unauthorize(global->p2p, peer); 6457 found = 1; 6458 } 6459 6460 if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { 6461 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); 6462 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; 6463 found = 1; 6464 } 6465 6466 if (wpa_s->pending_pd_before_join) { 6467 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); 6468 wpa_s->pending_pd_before_join = 0; 6469 found = 1; 6470 } 6471 6472 wpas_p2p_stop_find(wpa_s); 6473 6474 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 6475 if (wpa_s == global->p2p_group_formation && 6476 (wpa_s->p2p_in_provisioning || 6477 wpa_s->parent->pending_interface_type == 6478 WPA_IF_P2P_CLIENT)) { 6479 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 6480 "formation found - cancelling", 6481 wpa_s->ifname); 6482 found = 1; 6483 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6484 wpa_s->parent, NULL); 6485 if (wpa_s->p2p_in_provisioning) { 6486 wpas_group_formation_completed(wpa_s, 0); 6487 break; 6488 } 6489 wpas_p2p_group_delete(wpa_s, 6490 P2P_GROUP_REMOVAL_REQUESTED); 6491 break; 6492 } else if (wpa_s->p2p_in_invitation) { 6493 wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling", 6494 wpa_s->ifname); 6495 found = 1; 6496 wpas_p2p_group_formation_failed(wpa_s); 6497 } 6498 } 6499 6500 if (!found) { 6501 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 6502 return -1; 6503 } 6504 6505 return 0; 6506} 6507 6508 6509void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 6510{ 6511 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 6512 return; 6513 6514 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 6515 "being available anymore"); 6516 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); 6517} 6518 6519 6520void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 6521 int freq_24, int freq_5, int freq_overall) 6522{ 6523 struct p2p_data *p2p = wpa_s->global->p2p; 6524 if (p2p == NULL) 6525 return; 6526 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 6527} 6528 6529 6530int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 6531{ 6532 u8 peer[ETH_ALEN]; 6533 struct p2p_data *p2p = wpa_s->global->p2p; 6534 6535 if (p2p == NULL) 6536 return -1; 6537 6538 if (hwaddr_aton(addr, peer)) 6539 return -1; 6540 6541 return p2p_unauthorize(p2p, peer); 6542} 6543 6544 6545/** 6546 * wpas_p2p_disconnect - Disconnect from a P2P Group 6547 * @wpa_s: Pointer to wpa_supplicant data 6548 * Returns: 0 on success, -1 on failure 6549 * 6550 * This can be used to disconnect from a group in which the local end is a P2P 6551 * Client or to end a P2P Group in case the local end is the Group Owner. If a 6552 * virtual network interface was created for this group, that interface will be 6553 * removed. Otherwise, only the configured P2P group network will be removed 6554 * from the interface. 6555 */ 6556int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 6557{ 6558 6559 if (wpa_s == NULL) 6560 return -1; 6561 6562 return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? 6563 -1 : 0; 6564} 6565 6566 6567int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 6568{ 6569 int ret; 6570 6571 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 6572 return 0; 6573 6574 ret = p2p_in_progress(wpa_s->global->p2p); 6575 if (ret == 0) { 6576 /* 6577 * Check whether there is an ongoing WPS provisioning step (or 6578 * other parts of group formation) on another interface since 6579 * p2p_in_progress() does not report this to avoid issues for 6580 * scans during such provisioning step. 6581 */ 6582 if (wpa_s->global->p2p_group_formation && 6583 wpa_s->global->p2p_group_formation != wpa_s) { 6584 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) " 6585 "in group formation", 6586 wpa_s->global->p2p_group_formation->ifname); 6587 ret = 1; 6588 } 6589 } 6590 6591 if (!ret && wpa_s->global->p2p_go_wait_client.sec) { 6592 struct os_reltime now; 6593 os_get_reltime(&now); 6594 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client, 6595 P2P_MAX_INITIAL_CONN_WAIT_GO)) { 6596 /* Wait for the first client has expired */ 6597 wpa_s->global->p2p_go_wait_client.sec = 0; 6598 } else { 6599 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation"); 6600 ret = 1; 6601 } 6602 } 6603 6604 return ret; 6605} 6606 6607 6608void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 6609 struct wpa_ssid *ssid) 6610{ 6611 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 6612 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6613 wpa_s->parent, NULL) > 0) { 6614 /** 6615 * Remove the network by scheduling the group formation 6616 * timeout to happen immediately. The teardown code 6617 * needs to be scheduled to run asynch later so that we 6618 * don't delete data from under ourselves unexpectedly. 6619 * Calling wpas_p2p_group_formation_timeout directly 6620 * causes a series of crashes in WPS failure scenarios. 6621 */ 6622 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 6623 "P2P group network getting removed"); 6624 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, 6625 wpa_s->parent, NULL); 6626 } 6627} 6628 6629 6630struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 6631 const u8 *addr, const u8 *ssid, 6632 size_t ssid_len) 6633{ 6634 struct wpa_ssid *s; 6635 size_t i; 6636 6637 for (s = wpa_s->conf->ssid; s; s = s->next) { 6638 if (s->disabled != 2) 6639 continue; 6640 if (ssid && 6641 (ssid_len != s->ssid_len || 6642 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 6643 continue; 6644 if (addr == NULL) { 6645 if (s->mode == WPAS_MODE_P2P_GO) 6646 return s; 6647 continue; 6648 } 6649 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 6650 return s; /* peer is GO in the persistent group */ 6651 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 6652 continue; 6653 for (i = 0; i < s->num_p2p_clients; i++) { 6654 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 6655 addr, ETH_ALEN) == 0) 6656 return s; /* peer is P2P client in persistent 6657 * group */ 6658 } 6659 } 6660 6661 return NULL; 6662} 6663 6664 6665void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 6666 const u8 *addr) 6667{ 6668 if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 6669 wpa_s->parent, NULL) > 0) { 6670 /* 6671 * This can happen if WPS provisioning step is not terminated 6672 * cleanly (e.g., P2P Client does not send WSC_Done). Since the 6673 * peer was able to connect, there is no need to time out group 6674 * formation after this, though. In addition, this is used with 6675 * the initial connection wait on the GO as a separate formation 6676 * timeout and as such, expected to be hit after the initial WPS 6677 * provisioning step. 6678 */ 6679 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection"); 6680 } 6681 if (!wpa_s->p2p_go_group_formation_completed) { 6682 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection"); 6683 wpa_s->p2p_go_group_formation_completed = 1; 6684 wpa_s->global->p2p_group_formation = NULL; 6685 wpa_s->p2p_in_provisioning = 0; 6686 wpa_s->p2p_in_invitation = 0; 6687 } 6688 wpa_s->global->p2p_go_wait_client.sec = 0; 6689 if (addr == NULL) 6690 return; 6691 wpas_p2p_add_persistent_group_client(wpa_s, addr); 6692} 6693 6694 6695static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, 6696 int group_added) 6697{ 6698 struct wpa_supplicant *group = wpa_s; 6699 if (wpa_s->global->p2p_group_formation) 6700 group = wpa_s->global->p2p_group_formation; 6701 wpa_s = wpa_s->parent; 6702 offchannel_send_action_done(wpa_s); 6703 if (group_added) 6704 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); 6705 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); 6706 wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, 6707 wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, 6708 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, 6709 wpa_s->p2p_persistent_id, 6710 wpa_s->p2p_pd_before_go_neg, 6711 wpa_s->p2p_go_ht40, 6712 wpa_s->p2p_go_vht); 6713} 6714 6715 6716int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) 6717{ 6718 if (!wpa_s->p2p_fallback_to_go_neg || 6719 wpa_s->p2p_in_provisioning <= 5) 6720 return 0; 6721 6722 if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) 6723 return 0; /* peer operating as a GO */ 6724 6725 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " 6726 "fallback to GO Negotiation"); 6727 wpas_p2p_fallback_to_go_neg(wpa_s, 1); 6728 6729 return 1; 6730} 6731 6732 6733unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) 6734{ 6735 struct wpa_supplicant *ifs; 6736 6737 if (wpa_s->wpa_state > WPA_SCANNING) { 6738 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " 6739 "concurrent operation", 6740 P2P_CONCURRENT_SEARCH_DELAY); 6741 return P2P_CONCURRENT_SEARCH_DELAY; 6742 } 6743 6744 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 6745 radio_list) { 6746 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) { 6747 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " 6748 "delay due to concurrent operation on " 6749 "interface %s", 6750 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname); 6751 return P2P_CONCURRENT_SEARCH_DELAY; 6752 } 6753 } 6754 6755 return 0; 6756} 6757 6758 6759static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s, 6760 struct wpa_ssid *s, const u8 *addr, 6761 int iface_addr) 6762{ 6763 struct psk_list_entry *psk, *tmp; 6764 int changed = 0; 6765 6766 dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry, 6767 list) { 6768 if ((iface_addr && !psk->p2p && 6769 os_memcmp(addr, psk->addr, ETH_ALEN) == 0) || 6770 (!iface_addr && psk->p2p && 6771 os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) { 6772 wpa_dbg(wpa_s, MSG_DEBUG, 6773 "P2P: Remove persistent group PSK list entry for " 6774 MACSTR " p2p=%u", 6775 MAC2STR(psk->addr), psk->p2p); 6776 dl_list_del(&psk->list); 6777 os_free(psk); 6778 changed++; 6779 } 6780 } 6781 6782 return changed; 6783} 6784 6785 6786void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr, 6787 const u8 *p2p_dev_addr, 6788 const u8 *psk, size_t psk_len) 6789{ 6790 struct wpa_ssid *ssid = wpa_s->current_ssid; 6791 struct wpa_ssid *persistent; 6792 struct psk_list_entry *p, *last; 6793 6794 if (psk_len != sizeof(p->psk)) 6795 return; 6796 6797 if (p2p_dev_addr) { 6798 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR 6799 " p2p_dev_addr=" MACSTR, 6800 MAC2STR(mac_addr), MAC2STR(p2p_dev_addr)); 6801 if (is_zero_ether_addr(p2p_dev_addr)) 6802 p2p_dev_addr = NULL; 6803 } else { 6804 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR, 6805 MAC2STR(mac_addr)); 6806 } 6807 6808 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 6809 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation"); 6810 /* To be added to persistent group once created */ 6811 if (wpa_s->global->add_psk == NULL) { 6812 wpa_s->global->add_psk = os_zalloc(sizeof(*p)); 6813 if (wpa_s->global->add_psk == NULL) 6814 return; 6815 } 6816 p = wpa_s->global->add_psk; 6817 if (p2p_dev_addr) { 6818 p->p2p = 1; 6819 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 6820 } else { 6821 p->p2p = 0; 6822 os_memcpy(p->addr, mac_addr, ETH_ALEN); 6823 } 6824 os_memcpy(p->psk, psk, psk_len); 6825 return; 6826 } 6827 6828 if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) { 6829 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO"); 6830 return; 6831 } 6832 6833 persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid, 6834 ssid->ssid_len); 6835 if (!persistent) { 6836 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK"); 6837 return; 6838 } 6839 6840 p = os_zalloc(sizeof(*p)); 6841 if (p == NULL) 6842 return; 6843 if (p2p_dev_addr) { 6844 p->p2p = 1; 6845 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN); 6846 } else { 6847 p->p2p = 0; 6848 os_memcpy(p->addr, mac_addr, ETH_ALEN); 6849 } 6850 os_memcpy(p->psk, psk, psk_len); 6851 6852 if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS && 6853 (last = dl_list_last(&persistent->psk_list, 6854 struct psk_list_entry, list))) { 6855 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for " 6856 MACSTR " (p2p=%u) to make room for a new one", 6857 MAC2STR(last->addr), last->p2p); 6858 dl_list_del(&last->list); 6859 os_free(last); 6860 } 6861 6862 wpas_p2p_remove_psk_entry(wpa_s->parent, persistent, 6863 p2p_dev_addr ? p2p_dev_addr : mac_addr, 6864 p2p_dev_addr == NULL); 6865 if (p2p_dev_addr) { 6866 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr=" 6867 MACSTR, MAC2STR(p2p_dev_addr)); 6868 } else { 6869 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR, 6870 MAC2STR(mac_addr)); 6871 } 6872 dl_list_add(&persistent->psk_list, &p->list); 6873 6874 if (wpa_s->parent->conf->update_config && 6875 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 6876 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 6877} 6878 6879 6880static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s, 6881 struct wpa_ssid *s, const u8 *addr, 6882 int iface_addr) 6883{ 6884 int res; 6885 6886 res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr); 6887 if (res > 0 && wpa_s->conf->update_config && 6888 wpa_config_write(wpa_s->confname, wpa_s->conf)) 6889 wpa_dbg(wpa_s, MSG_DEBUG, 6890 "P2P: Failed to update configuration"); 6891} 6892 6893 6894static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s, 6895 const u8 *peer, int iface_addr) 6896{ 6897 struct hostapd_data *hapd; 6898 struct hostapd_wpa_psk *psk, *prev, *rem; 6899 struct sta_info *sta; 6900 6901 if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL || 6902 wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO) 6903 return; 6904 6905 /* Remove per-station PSK entry */ 6906 hapd = wpa_s->ap_iface->bss[0]; 6907 prev = NULL; 6908 psk = hapd->conf->ssid.wpa_psk; 6909 while (psk) { 6910 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) || 6911 (!iface_addr && 6912 os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) { 6913 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for " 6914 MACSTR " iface_addr=%d", 6915 MAC2STR(peer), iface_addr); 6916 if (prev) 6917 prev->next = psk->next; 6918 else 6919 hapd->conf->ssid.wpa_psk = psk->next; 6920 rem = psk; 6921 psk = psk->next; 6922 os_free(rem); 6923 } else { 6924 prev = psk; 6925 psk = psk->next; 6926 } 6927 } 6928 6929 /* Disconnect from group */ 6930 if (iface_addr) 6931 sta = ap_get_sta(hapd, peer); 6932 else 6933 sta = ap_get_sta_p2p(hapd, peer); 6934 if (sta) { 6935 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR 6936 " (iface_addr=%d) from group", 6937 MAC2STR(peer), iface_addr); 6938 hostapd_drv_sta_deauth(hapd, sta->addr, 6939 WLAN_REASON_DEAUTH_LEAVING); 6940 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING); 6941 } 6942} 6943 6944 6945void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer, 6946 int iface_addr) 6947{ 6948 struct wpa_ssid *s; 6949 struct wpa_supplicant *w; 6950 6951 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer)); 6952 6953 /* Remove from any persistent group */ 6954 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 6955 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 6956 continue; 6957 if (!iface_addr) 6958 wpas_remove_persistent_peer(wpa_s, s, peer, 0); 6959 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr); 6960 } 6961 6962 /* Remove from any operating group */ 6963 for (w = wpa_s->global->ifaces; w; w = w->next) 6964 wpas_p2p_remove_client_go(w, peer, iface_addr); 6965} 6966 6967 6968static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx) 6969{ 6970 struct wpa_supplicant *wpa_s = eloop_ctx; 6971 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE); 6972} 6973 6974 6975static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx) 6976{ 6977 struct wpa_supplicant *wpa_s = eloop_ctx; 6978 6979 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group"); 6980 wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT); 6981} 6982 6983 6984int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq, 6985 struct wpa_ssid *ssid) 6986{ 6987 struct wpa_supplicant *iface; 6988 6989 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 6990 if (!iface->current_ssid || 6991 iface->current_ssid->frequency == freq || 6992 (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE && 6993 !iface->current_ssid->p2p_group)) 6994 continue; 6995 6996 /* Remove the connection with least priority */ 6997 if (!wpas_is_p2p_prioritized(iface)) { 6998 /* STA connection has priority over existing 6999 * P2P connection, so remove the interface. */ 7000 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict"); 7001 eloop_register_timeout(0, 0, 7002 wpas_p2p_group_freq_conflict, 7003 iface, NULL); 7004 /* If connection in progress is P2P connection, do not 7005 * proceed for the connection. */ 7006 if (wpa_s == iface) 7007 return -1; 7008 else 7009 return 0; 7010 } else { 7011 /* P2P connection has priority, disable the STA network 7012 */ 7013 wpa_supplicant_disable_network(wpa_s->global->ifaces, 7014 ssid); 7015 wpa_msg(wpa_s->global->ifaces, MSG_INFO, 7016 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); 7017 os_memset(wpa_s->global->ifaces->pending_bssid, 0, 7018 ETH_ALEN); 7019 /* If P2P connection is in progress, continue 7020 * connecting...*/ 7021 if (wpa_s == iface) 7022 return 0; 7023 else 7024 return -1; 7025 } 7026 } 7027 7028 return 0; 7029} 7030 7031 7032int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s) 7033{ 7034 struct wpa_ssid *ssid = wpa_s->current_ssid; 7035 7036 if (ssid == NULL || !ssid->p2p_group) 7037 return 0; 7038 7039 if (wpa_s->p2p_last_4way_hs_fail && 7040 wpa_s->p2p_last_4way_hs_fail == ssid) { 7041 u8 go_dev_addr[ETH_ALEN]; 7042 struct wpa_ssid *persistent; 7043 7044 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr, 7045 ssid->ssid, 7046 ssid->ssid_len) <= 0) { 7047 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group"); 7048 goto disconnect; 7049 } 7050 7051 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr=" 7052 MACSTR, MAC2STR(go_dev_addr)); 7053 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr, 7054 ssid->ssid, 7055 ssid->ssid_len); 7056 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) { 7057 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored"); 7058 goto disconnect; 7059 } 7060 wpa_msg_global(wpa_s->parent, MSG_INFO, 7061 P2P_EVENT_PERSISTENT_PSK_FAIL "%d", 7062 persistent->id); 7063 disconnect: 7064 wpa_s->p2p_last_4way_hs_fail = NULL; 7065 /* 7066 * Remove the group from a timeout to avoid issues with caller 7067 * continuing to use the interface if this is on a P2P group 7068 * interface. 7069 */ 7070 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal, 7071 wpa_s, NULL); 7072 return 1; 7073 } 7074 7075 wpa_s->p2p_last_4way_hs_fail = ssid; 7076 return 0; 7077} 7078 7079 7080#ifdef CONFIG_WPS_NFC 7081 7082static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc, 7083 struct wpabuf *p2p) 7084{ 7085 struct wpabuf *ret; 7086 size_t wsc_len; 7087 7088 if (p2p == NULL) { 7089 wpabuf_free(wsc); 7090 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover"); 7091 return NULL; 7092 } 7093 7094 wsc_len = wsc ? wpabuf_len(wsc) : 0; 7095 ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p)); 7096 if (ret == NULL) { 7097 wpabuf_free(wsc); 7098 wpabuf_free(p2p); 7099 return NULL; 7100 } 7101 7102 wpabuf_put_be16(ret, wsc_len); 7103 if (wsc) 7104 wpabuf_put_buf(ret, wsc); 7105 wpabuf_put_be16(ret, wpabuf_len(p2p)); 7106 wpabuf_put_buf(ret, p2p); 7107 7108 wpabuf_free(wsc); 7109 wpabuf_free(p2p); 7110 wpa_hexdump_buf(MSG_DEBUG, 7111 "P2P: Generated NFC connection handover message", ret); 7112 7113 if (ndef && ret) { 7114 struct wpabuf *tmp; 7115 tmp = ndef_build_p2p(ret); 7116 wpabuf_free(ret); 7117 if (tmp == NULL) { 7118 wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request"); 7119 return NULL; 7120 } 7121 ret = tmp; 7122 } 7123 7124 return ret; 7125} 7126 7127 7128static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s, 7129 struct wpa_ssid **ssid, u8 *go_dev_addr) 7130{ 7131 struct wpa_supplicant *iface; 7132 7133 if (go_dev_addr) 7134 os_memset(go_dev_addr, 0, ETH_ALEN); 7135 if (ssid) 7136 *ssid = NULL; 7137 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7138 if (iface->wpa_state < WPA_ASSOCIATING || 7139 iface->current_ssid == NULL || iface->assoc_freq == 0 || 7140 !iface->current_ssid->p2p_group || 7141 iface->current_ssid->mode != WPAS_MODE_INFRA) 7142 continue; 7143 if (ssid) 7144 *ssid = iface->current_ssid; 7145 if (go_dev_addr) 7146 os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN); 7147 return iface->assoc_freq; 7148 } 7149 return 0; 7150} 7151 7152 7153struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s, 7154 int ndef) 7155{ 7156 struct wpabuf *wsc, *p2p; 7157 struct wpa_ssid *ssid; 7158 u8 go_dev_addr[ETH_ALEN]; 7159 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 7160 7161 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) { 7162 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request"); 7163 return NULL; 7164 } 7165 7166 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 7167 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 7168 &wpa_s->conf->wps_nfc_dh_privkey) < 0) { 7169 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request"); 7170 return NULL; 7171 } 7172 7173 if (cli_freq == 0) { 7174 wsc = wps_build_nfc_handover_req_p2p( 7175 wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey); 7176 } else 7177 wsc = NULL; 7178 p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq, 7179 go_dev_addr, ssid ? ssid->ssid : NULL, 7180 ssid ? ssid->ssid_len : 0); 7181 7182 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 7183} 7184 7185 7186struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s, 7187 int ndef, int tag) 7188{ 7189 struct wpabuf *wsc, *p2p; 7190 struct wpa_ssid *ssid; 7191 u8 go_dev_addr[ETH_ALEN]; 7192 int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr); 7193 7194 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7195 return NULL; 7196 7197 if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL && 7198 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 7199 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 7200 return NULL; 7201 7202 if (cli_freq == 0) { 7203 wsc = wps_build_nfc_handover_sel_p2p( 7204 wpa_s->parent->wps, 7205 tag ? wpa_s->conf->wps_nfc_dev_pw_id : 7206 DEV_PW_NFC_CONNECTION_HANDOVER, 7207 wpa_s->conf->wps_nfc_dh_pubkey, 7208 tag ? wpa_s->conf->wps_nfc_dev_pw : NULL); 7209 } else 7210 wsc = NULL; 7211 p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq, 7212 go_dev_addr, ssid ? ssid->ssid : NULL, 7213 ssid ? ssid->ssid_len : 0); 7214 7215 return wpas_p2p_nfc_handover(ndef, wsc, p2p); 7216} 7217 7218 7219static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s, 7220 struct p2p_nfc_params *params) 7221{ 7222 wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC " 7223 "connection handover (freq=%d)", 7224 params->go_freq); 7225 7226 if (params->go_freq && params->go_ssid_len) { 7227 wpa_s->p2p_wps_method = WPS_NFC; 7228 wpa_s->pending_join_wps_method = WPS_NFC; 7229 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN); 7230 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr, 7231 ETH_ALEN); 7232 return wpas_p2p_join_start(wpa_s, params->go_freq, 7233 params->go_ssid, 7234 params->go_ssid_len); 7235 } 7236 7237 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 7238 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent, 7239 params->go_freq, -1, 0, 1, 1); 7240} 7241 7242 7243static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s, 7244 struct p2p_nfc_params *params, int tag) 7245{ 7246 int res, persistent; 7247 struct wpa_ssid *ssid; 7248 7249 wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC " 7250 "connection handover"); 7251 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 7252 ssid = wpa_s->current_ssid; 7253 if (ssid == NULL) 7254 continue; 7255 if (ssid->mode != WPAS_MODE_P2P_GO) 7256 continue; 7257 if (wpa_s->ap_iface == NULL) 7258 continue; 7259 break; 7260 } 7261 if (wpa_s == NULL) { 7262 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface"); 7263 return -1; 7264 } 7265 7266 if (wpa_s->parent->p2p_oob_dev_pw_id != 7267 DEV_PW_NFC_CONNECTION_HANDOVER && 7268 !wpa_s->parent->p2p_oob_dev_pw) { 7269 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known"); 7270 return -1; 7271 } 7272 res = wpas_ap_wps_add_nfc_pw( 7273 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id, 7274 wpa_s->parent->p2p_oob_dev_pw, 7275 wpa_s->parent->p2p_peer_oob_pk_hash_known ? 7276 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL); 7277 if (res) 7278 return res; 7279 7280 if (!tag) { 7281 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation"); 7282 return 0; 7283 } 7284 7285 if (!params->peer || 7286 !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE)) 7287 return 0; 7288 7289 wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR 7290 " to join", MAC2STR(params->peer->p2p_device_addr)); 7291 7292 wpa_s->global->p2p_invite_group = wpa_s; 7293 persistent = ssid->p2p_persistent_group && 7294 wpas_p2p_get_persistent(wpa_s->parent, 7295 params->peer->p2p_device_addr, 7296 ssid->ssid, ssid->ssid_len); 7297 wpa_s->parent->pending_invite_ssid_id = -1; 7298 7299 return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr, 7300 P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr, 7301 ssid->ssid, ssid->ssid_len, ssid->frequency, 7302 wpa_s->global->p2p_dev_addr, persistent, 0, 7303 wpa_s->parent->p2p_oob_dev_pw_id); 7304} 7305 7306 7307static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s, 7308 struct p2p_nfc_params *params, 7309 int forced_freq) 7310{ 7311 wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC " 7312 "connection handover"); 7313 return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 7314 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent, 7315 forced_freq, -1, 0, 1, 1); 7316} 7317 7318 7319static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s, 7320 struct p2p_nfc_params *params, 7321 int forced_freq) 7322{ 7323 int res; 7324 7325 wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC " 7326 "connection handover"); 7327 res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL, 7328 WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent, 7329 forced_freq, -1, 0, 1, 1); 7330 if (res) 7331 return res; 7332 7333 res = wpas_p2p_listen(wpa_s, 60); 7334 if (res) { 7335 p2p_unauthorize(wpa_s->global->p2p, 7336 params->peer->p2p_device_addr); 7337 } 7338 7339 return res; 7340} 7341 7342 7343static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s, 7344 const struct wpabuf *data, 7345 int sel, int tag, int forced_freq) 7346{ 7347 const u8 *pos, *end; 7348 u16 len, id; 7349 struct p2p_nfc_params params; 7350 int res; 7351 7352 os_memset(¶ms, 0, sizeof(params)); 7353 params.sel = sel; 7354 7355 wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data); 7356 7357 pos = wpabuf_head(data); 7358 end = pos + wpabuf_len(data); 7359 7360 if (end - pos < 2) { 7361 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC " 7362 "attributes"); 7363 return -1; 7364 } 7365 len = WPA_GET_BE16(pos); 7366 pos += 2; 7367 if (pos + len > end) { 7368 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC " 7369 "attributes"); 7370 return -1; 7371 } 7372 params.wsc_attr = pos; 7373 params.wsc_len = len; 7374 pos += len; 7375 7376 if (end - pos < 2) { 7377 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P " 7378 "attributes"); 7379 return -1; 7380 } 7381 len = WPA_GET_BE16(pos); 7382 pos += 2; 7383 if (pos + len > end) { 7384 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P " 7385 "attributes"); 7386 return -1; 7387 } 7388 params.p2p_attr = pos; 7389 params.p2p_len = len; 7390 pos += len; 7391 7392 wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes", 7393 params.wsc_attr, params.wsc_len); 7394 wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes", 7395 params.p2p_attr, params.p2p_len); 7396 if (pos < end) { 7397 wpa_hexdump(MSG_DEBUG, 7398 "P2P: Ignored extra data after P2P attributes", 7399 pos, end - pos); 7400 } 7401 7402 res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, ¶ms); 7403 if (res) 7404 return res; 7405 7406 if (params.next_step == NO_ACTION) 7407 return 0; 7408 7409 if (params.next_step == BOTH_GO) { 7410 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR, 7411 MAC2STR(params.peer->p2p_device_addr)); 7412 return 0; 7413 } 7414 7415 if (params.next_step == PEER_CLIENT) { 7416 if (!is_zero_ether_addr(params.go_dev_addr)) { 7417 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 7418 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR 7419 " ssid=\"%s\"", 7420 MAC2STR(params.peer->p2p_device_addr), 7421 params.go_freq, 7422 MAC2STR(params.go_dev_addr), 7423 wpa_ssid_txt(params.go_ssid, 7424 params.go_ssid_len)); 7425 } else { 7426 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT 7427 "peer=" MACSTR " freq=%d", 7428 MAC2STR(params.peer->p2p_device_addr), 7429 params.go_freq); 7430 } 7431 return 0; 7432 } 7433 7434 if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) { 7435 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer=" 7436 MACSTR, MAC2STR(params.peer->p2p_device_addr)); 7437 return 0; 7438 } 7439 7440 wpabuf_free(wpa_s->p2p_oob_dev_pw); 7441 wpa_s->p2p_oob_dev_pw = NULL; 7442 7443 if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) { 7444 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw " 7445 "received"); 7446 return -1; 7447 } 7448 7449 id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN); 7450 wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id); 7451 wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash", 7452 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 7453 os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash, 7454 params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN); 7455 wpa_s->p2p_peer_oob_pk_hash_known = 1; 7456 7457 if (tag) { 7458 if (id < 0x10) { 7459 wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid " 7460 "peer OOB Device Password Id %u", id); 7461 return -1; 7462 } 7463 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB " 7464 "Device Password Id %u", id); 7465 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password", 7466 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 7467 params.oob_dev_pw_len - 7468 WPS_OOB_PUBKEY_HASH_LEN - 2); 7469 wpa_s->p2p_oob_dev_pw_id = id; 7470 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy( 7471 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2, 7472 params.oob_dev_pw_len - 7473 WPS_OOB_PUBKEY_HASH_LEN - 2); 7474 if (wpa_s->p2p_oob_dev_pw == NULL) 7475 return -1; 7476 7477 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL && 7478 wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey, 7479 &wpa_s->conf->wps_nfc_dh_privkey) < 0) 7480 return -1; 7481 } else { 7482 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake " 7483 "without Device Password"); 7484 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER; 7485 } 7486 7487 switch (params.next_step) { 7488 case NO_ACTION: 7489 case BOTH_GO: 7490 case PEER_CLIENT: 7491 /* already covered above */ 7492 return 0; 7493 case JOIN_GROUP: 7494 return wpas_p2p_nfc_join_group(wpa_s, ¶ms); 7495 case AUTH_JOIN: 7496 return wpas_p2p_nfc_auth_join(wpa_s, ¶ms, tag); 7497 case INIT_GO_NEG: 7498 return wpas_p2p_nfc_init_go_neg(wpa_s, ¶ms, forced_freq); 7499 case RESP_GO_NEG: 7500 /* TODO: use own OOB Dev Pw */ 7501 return wpas_p2p_nfc_resp_go_neg(wpa_s, ¶ms, forced_freq); 7502 } 7503 7504 return -1; 7505} 7506 7507 7508int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s, 7509 const struct wpabuf *data, int forced_freq) 7510{ 7511 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7512 return -1; 7513 7514 return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq); 7515} 7516 7517 7518int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init, 7519 const struct wpabuf *req, 7520 const struct wpabuf *sel, int forced_freq) 7521{ 7522 struct wpabuf *tmp; 7523 int ret; 7524 7525 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 7526 return -1; 7527 7528 wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported"); 7529 7530 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req", 7531 wpabuf_head(req), wpabuf_len(req)); 7532 wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel", 7533 wpabuf_head(sel), wpabuf_len(sel)); 7534 if (forced_freq) 7535 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq); 7536 tmp = ndef_parse_p2p(init ? sel : req); 7537 if (tmp == NULL) { 7538 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF"); 7539 return -1; 7540 } 7541 7542 ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0, 7543 forced_freq); 7544 wpabuf_free(tmp); 7545 7546 return ret; 7547} 7548 7549 7550int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled) 7551{ 7552 const u8 *if_addr; 7553 int go_intent = wpa_s->conf->p2p_go_intent; 7554 struct wpa_supplicant *iface; 7555 7556 if (wpa_s->global->p2p == NULL) 7557 return -1; 7558 7559 if (!enabled) { 7560 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag"); 7561 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 7562 { 7563 if (!iface->ap_iface) 7564 continue; 7565 hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]); 7566 } 7567 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0, 7568 0, NULL); 7569 if (wpa_s->p2p_nfc_tag_enabled) 7570 wpas_p2p_remove_pending_group_interface(wpa_s); 7571 wpa_s->p2p_nfc_tag_enabled = 0; 7572 return 0; 7573 } 7574 7575 if (wpa_s->global->p2p_disabled) 7576 return -1; 7577 7578 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL || 7579 wpa_s->conf->wps_nfc_dh_privkey == NULL || 7580 wpa_s->conf->wps_nfc_dev_pw == NULL || 7581 wpa_s->conf->wps_nfc_dev_pw_id < 0x10) { 7582 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured " 7583 "to allow static handover cases"); 7584 return -1; 7585 } 7586 7587 wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag"); 7588 7589 wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 7590 wpabuf_free(wpa_s->p2p_oob_dev_pw); 7591 wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 7592 if (wpa_s->p2p_oob_dev_pw == NULL) 7593 return -1; 7594 wpa_s->p2p_peer_oob_pk_hash_known = 0; 7595 7596 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO || 7597 wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) { 7598 /* 7599 * P2P Group Interface present and the command came on group 7600 * interface, so enable the token for the current interface. 7601 */ 7602 wpa_s->create_p2p_iface = 0; 7603 } else { 7604 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 7605 } 7606 7607 if (wpa_s->create_p2p_iface) { 7608 enum wpa_driver_if_type iftype; 7609 /* Prepare to add a new interface for the group */ 7610 iftype = WPA_IF_P2P_GROUP; 7611 if (go_intent == 15) 7612 iftype = WPA_IF_P2P_GO; 7613 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 7614 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 7615 "interface for the group"); 7616 return -1; 7617 } 7618 7619 if_addr = wpa_s->pending_interface_addr; 7620 } else 7621 if_addr = wpa_s->own_addr; 7622 7623 wpa_s->p2p_nfc_tag_enabled = enabled; 7624 7625 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 7626 struct hostapd_data *hapd; 7627 if (iface->ap_iface == NULL) 7628 continue; 7629 hapd = iface->ap_iface->bss[0]; 7630 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey); 7631 hapd->conf->wps_nfc_dh_pubkey = 7632 wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey); 7633 wpabuf_free(hapd->conf->wps_nfc_dh_privkey); 7634 hapd->conf->wps_nfc_dh_privkey = 7635 wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey); 7636 wpabuf_free(hapd->conf->wps_nfc_dev_pw); 7637 hapd->conf->wps_nfc_dev_pw = 7638 wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw); 7639 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id; 7640 7641 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) { 7642 wpa_dbg(iface, MSG_DEBUG, 7643 "P2P: Failed to enable NFC Tag for GO"); 7644 } 7645 } 7646 p2p_set_authorized_oob_dev_pw_id( 7647 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent, 7648 if_addr); 7649 7650 return 0; 7651} 7652 7653#endif /* CONFIG_WPS_NFC */ 7654