wpa_supplicant.c revision b97e428f8acf1ecb93f38f8d0063d2f2fd0bc36e
1/* 2 * WPA Supplicant 3 * Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 * 8 * This file implements functions for registering and unregistering 9 * %wpa_supplicant interfaces. In addition, this file contains number of 10 * functions for managing network connections. 11 */ 12 13#include "includes.h" 14 15#include "common.h" 16#include "crypto/random.h" 17#include "crypto/sha1.h" 18#include "eapol_supp/eapol_supp_sm.h" 19#include "eap_peer/eap.h" 20#include "eap_peer/eap_proxy.h" 21#include "eap_server/eap_methods.h" 22#include "rsn_supp/wpa.h" 23#include "eloop.h" 24#include "config.h" 25#include "utils/ext_password.h" 26#include "l2_packet/l2_packet.h" 27#include "wpa_supplicant_i.h" 28#include "driver_i.h" 29#include "ctrl_iface.h" 30#include "pcsc_funcs.h" 31#include "common/version.h" 32#include "rsn_supp/preauth.h" 33#include "rsn_supp/pmksa_cache.h" 34#include "common/wpa_ctrl.h" 35#include "common/ieee802_11_defs.h" 36#include "common/hw_features_common.h" 37#include "p2p/p2p.h" 38#include "fst/fst.h" 39#include "blacklist.h" 40#include "wpas_glue.h" 41#include "wps_supplicant.h" 42#include "ibss_rsn.h" 43#include "sme.h" 44#include "gas_query.h" 45#include "ap.h" 46#include "p2p_supplicant.h" 47#include "wifi_display.h" 48#include "notify.h" 49#include "bgscan.h" 50#include "autoscan.h" 51#include "bss.h" 52#include "scan.h" 53#include "offchannel.h" 54#include "hs20_supplicant.h" 55#include "wnm_sta.h" 56#include "wpas_kay.h" 57#include "mesh.h" 58 59const char *const wpa_supplicant_version = 60"wpa_supplicant v" VERSION_STR "\n" 61"Copyright (c) 2003-2016, Jouni Malinen <j@w1.fi> and contributors"; 62 63const char *const wpa_supplicant_license = 64"This software may be distributed under the terms of the BSD license.\n" 65"See README for more details.\n" 66#ifdef EAP_TLS_OPENSSL 67"\nThis product includes software developed by the OpenSSL Project\n" 68"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n" 69#endif /* EAP_TLS_OPENSSL */ 70; 71 72#ifndef CONFIG_NO_STDOUT_DEBUG 73/* Long text divided into parts in order to fit in C89 strings size limits. */ 74const char *const wpa_supplicant_full_license1 = 75""; 76const char *const wpa_supplicant_full_license2 = 77"This software may be distributed under the terms of the BSD license.\n" 78"\n" 79"Redistribution and use in source and binary forms, with or without\n" 80"modification, are permitted provided that the following conditions are\n" 81"met:\n" 82"\n"; 83const char *const wpa_supplicant_full_license3 = 84"1. Redistributions of source code must retain the above copyright\n" 85" notice, this list of conditions and the following disclaimer.\n" 86"\n" 87"2. Redistributions in binary form must reproduce the above copyright\n" 88" notice, this list of conditions and the following disclaimer in the\n" 89" documentation and/or other materials provided with the distribution.\n" 90"\n"; 91const char *const wpa_supplicant_full_license4 = 92"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n" 93" names of its contributors may be used to endorse or promote products\n" 94" derived from this software without specific prior written permission.\n" 95"\n" 96"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n" 97"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n" 98"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n" 99"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"; 100const char *const wpa_supplicant_full_license5 = 101"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" 102"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" 103"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n" 104"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n" 105"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" 106"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n" 107"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" 108"\n"; 109#endif /* CONFIG_NO_STDOUT_DEBUG */ 110 111/* Configure default/group WEP keys for static WEP */ 112int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 113{ 114 int i, set = 0; 115 116 for (i = 0; i < NUM_WEP_KEYS; i++) { 117 if (ssid->wep_key_len[i] == 0) 118 continue; 119 120 set = 1; 121 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL, 122 i, i == ssid->wep_tx_keyidx, NULL, 0, 123 ssid->wep_key[i], ssid->wep_key_len[i]); 124 } 125 126 return set; 127} 128 129 130int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s, 131 struct wpa_ssid *ssid) 132{ 133 u8 key[32]; 134 size_t keylen; 135 enum wpa_alg alg; 136 u8 seq[6] = { 0 }; 137 int ret; 138 139 /* IBSS/WPA-None uses only one key (Group) for both receiving and 140 * sending unicast and multicast packets. */ 141 142 if (ssid->mode != WPAS_MODE_IBSS) { 143 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not " 144 "IBSS/ad-hoc) for WPA-None", ssid->mode); 145 return -1; 146 } 147 148 if (!ssid->psk_set) { 149 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for " 150 "WPA-None"); 151 return -1; 152 } 153 154 switch (wpa_s->group_cipher) { 155 case WPA_CIPHER_CCMP: 156 os_memcpy(key, ssid->psk, 16); 157 keylen = 16; 158 alg = WPA_ALG_CCMP; 159 break; 160 case WPA_CIPHER_GCMP: 161 os_memcpy(key, ssid->psk, 16); 162 keylen = 16; 163 alg = WPA_ALG_GCMP; 164 break; 165 case WPA_CIPHER_TKIP: 166 /* WPA-None uses the same Michael MIC key for both TX and RX */ 167 os_memcpy(key, ssid->psk, 16 + 8); 168 os_memcpy(key + 16 + 8, ssid->psk + 16, 8); 169 keylen = 32; 170 alg = WPA_ALG_TKIP; 171 break; 172 default: 173 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for " 174 "WPA-None", wpa_s->group_cipher); 175 return -1; 176 } 177 178 /* TODO: should actually remember the previously used seq#, both for TX 179 * and RX from each STA.. */ 180 181 ret = wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen); 182 os_memset(key, 0, sizeof(key)); 183 return ret; 184} 185 186 187static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx) 188{ 189 struct wpa_supplicant *wpa_s = eloop_ctx; 190 const u8 *bssid = wpa_s->bssid; 191 if (is_zero_ether_addr(bssid)) 192 bssid = wpa_s->pending_bssid; 193 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.", 194 MAC2STR(bssid)); 195 wpa_blacklist_add(wpa_s, bssid); 196 wpa_sm_notify_disassoc(wpa_s->wpa); 197 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 198 wpa_s->reassociate = 1; 199 200 /* 201 * If we timed out, the AP or the local radio may be busy. 202 * So, wait a second until scanning again. 203 */ 204 wpa_supplicant_req_scan(wpa_s, 1, 0); 205} 206 207 208/** 209 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication 210 * @wpa_s: Pointer to wpa_supplicant data 211 * @sec: Number of seconds after which to time out authentication 212 * @usec: Number of microseconds after which to time out authentication 213 * 214 * This function is used to schedule a timeout for the current authentication 215 * attempt. 216 */ 217void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s, 218 int sec, int usec) 219{ 220 if (wpa_s->conf->ap_scan == 0 && 221 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 222 return; 223 224 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec " 225 "%d usec", sec, usec); 226 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 227 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL); 228} 229 230 231/** 232 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout 233 * @wpa_s: Pointer to wpa_supplicant data 234 * 235 * This function is used to cancel authentication timeout scheduled with 236 * wpa_supplicant_req_auth_timeout() and it is called when authentication has 237 * been completed. 238 */ 239void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s) 240{ 241 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout"); 242 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 243 wpa_blacklist_del(wpa_s, wpa_s->bssid); 244} 245 246 247/** 248 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine 249 * @wpa_s: Pointer to wpa_supplicant data 250 * 251 * This function is used to configure EAPOL state machine based on the selected 252 * authentication mode. 253 */ 254void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s) 255{ 256#ifdef IEEE8021X_EAPOL 257 struct eapol_config eapol_conf; 258 struct wpa_ssid *ssid = wpa_s->current_ssid; 259 260#ifdef CONFIG_IBSS_RSN 261 if (ssid->mode == WPAS_MODE_IBSS && 262 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 263 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 264 /* 265 * RSN IBSS authentication is per-STA and we can disable the 266 * per-BSSID EAPOL authentication. 267 */ 268 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 269 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 270 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 271 return; 272 } 273#endif /* CONFIG_IBSS_RSN */ 274 275 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 276 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 277 278 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 279 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 280 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 281 else 282 eapol_sm_notify_portControl(wpa_s->eapol, Auto); 283 284 os_memset(&eapol_conf, 0, sizeof(eapol_conf)); 285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 286 eapol_conf.accept_802_1x_keys = 1; 287 eapol_conf.required_keys = 0; 288 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) { 289 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST; 290 } 291 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) { 292 eapol_conf.required_keys |= 293 EAPOL_REQUIRE_KEY_BROADCAST; 294 } 295 296 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED) 297 eapol_conf.required_keys = 0; 298 } 299 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth; 300 eapol_conf.workaround = ssid->eap_workaround; 301 eapol_conf.eap_disabled = 302 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) && 303 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA && 304 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS; 305 eapol_conf.external_sim = wpa_s->conf->external_sim; 306 307#ifdef CONFIG_WPS 308 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) { 309 eapol_conf.wps |= EAPOL_LOCAL_WPS_IN_USE; 310 if (wpa_s->current_bss) { 311 struct wpabuf *ie; 312 ie = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss, 313 WPS_IE_VENDOR_TYPE); 314 if (ie) { 315 if (wps_is_20(ie)) 316 eapol_conf.wps |= 317 EAPOL_PEER_IS_WPS20_AP; 318 wpabuf_free(ie); 319 } 320 } 321 } 322#endif /* CONFIG_WPS */ 323 324 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf); 325 326 ieee802_1x_alloc_kay_sm(wpa_s, ssid); 327#endif /* IEEE8021X_EAPOL */ 328} 329 330 331/** 332 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode 333 * @wpa_s: Pointer to wpa_supplicant data 334 * @ssid: Configuration data for the network 335 * 336 * This function is used to configure WPA state machine and related parameters 337 * to a mode where WPA is not enabled. This is called as part of the 338 * authentication configuration when the selected network does not use WPA. 339 */ 340void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s, 341 struct wpa_ssid *ssid) 342{ 343 int i; 344 345 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 346 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS; 347 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) 348 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 349 else 350 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE; 351 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 352 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 353 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 354 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 355 wpa_s->group_cipher = WPA_CIPHER_NONE; 356 wpa_s->mgmt_group_cipher = 0; 357 358 for (i = 0; i < NUM_WEP_KEYS; i++) { 359 if (ssid->wep_key_len[i] > 5) { 360 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104; 361 wpa_s->group_cipher = WPA_CIPHER_WEP104; 362 break; 363 } else if (ssid->wep_key_len[i] > 0) { 364 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40; 365 wpa_s->group_cipher = WPA_CIPHER_WEP40; 366 break; 367 } 368 } 369 370 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0); 371 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 372 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 373 wpa_s->pairwise_cipher); 374 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 375#ifdef CONFIG_IEEE80211W 376 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 377 wpa_s->mgmt_group_cipher); 378#endif /* CONFIG_IEEE80211W */ 379 380 pmksa_cache_clear_current(wpa_s->wpa); 381} 382 383 384void free_hw_features(struct wpa_supplicant *wpa_s) 385{ 386 int i; 387 if (wpa_s->hw.modes == NULL) 388 return; 389 390 for (i = 0; i < wpa_s->hw.num_modes; i++) { 391 os_free(wpa_s->hw.modes[i].channels); 392 os_free(wpa_s->hw.modes[i].rates); 393 } 394 395 os_free(wpa_s->hw.modes); 396 wpa_s->hw.modes = NULL; 397} 398 399 400static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s) 401{ 402 int i; 403 404 bgscan_deinit(wpa_s); 405 autoscan_deinit(wpa_s); 406 scard_deinit(wpa_s->scard); 407 wpa_s->scard = NULL; 408 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL); 409 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL); 410 l2_packet_deinit(wpa_s->l2); 411 wpa_s->l2 = NULL; 412 if (wpa_s->l2_br) { 413 l2_packet_deinit(wpa_s->l2_br); 414 wpa_s->l2_br = NULL; 415 } 416#ifdef CONFIG_TESTING_OPTIONS 417 l2_packet_deinit(wpa_s->l2_test); 418 wpa_s->l2_test = NULL; 419#endif /* CONFIG_TESTING_OPTIONS */ 420 421 if (wpa_s->conf != NULL) { 422 struct wpa_ssid *ssid; 423 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 424 wpas_notify_network_removed(wpa_s, ssid); 425 } 426 427 os_free(wpa_s->confname); 428 wpa_s->confname = NULL; 429 430 os_free(wpa_s->confanother); 431 wpa_s->confanother = NULL; 432 433 wpa_sm_set_eapol(wpa_s->wpa, NULL); 434 eapol_sm_deinit(wpa_s->eapol); 435 wpa_s->eapol = NULL; 436 437 rsn_preauth_deinit(wpa_s->wpa); 438 439#ifdef CONFIG_TDLS 440 wpa_tdls_deinit(wpa_s->wpa); 441#endif /* CONFIG_TDLS */ 442 443 wmm_ac_clear_saved_tspecs(wpa_s); 444 pmksa_candidate_free(wpa_s->wpa); 445 wpa_sm_deinit(wpa_s->wpa); 446 wpa_s->wpa = NULL; 447 wpa_blacklist_clear(wpa_s); 448 449 wpa_bss_deinit(wpa_s); 450 451 wpa_supplicant_cancel_delayed_sched_scan(wpa_s); 452 wpa_supplicant_cancel_scan(wpa_s); 453 wpa_supplicant_cancel_auth_timeout(wpa_s); 454 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL); 455#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 456 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report, 457 wpa_s, NULL); 458#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 459 460 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 461 462 wpas_wps_deinit(wpa_s); 463 464 wpabuf_free(wpa_s->pending_eapol_rx); 465 wpa_s->pending_eapol_rx = NULL; 466 467#ifdef CONFIG_IBSS_RSN 468 ibss_rsn_deinit(wpa_s->ibss_rsn); 469 wpa_s->ibss_rsn = NULL; 470#endif /* CONFIG_IBSS_RSN */ 471 472 sme_deinit(wpa_s); 473 474#ifdef CONFIG_AP 475 wpa_supplicant_ap_deinit(wpa_s); 476#endif /* CONFIG_AP */ 477 478 wpas_p2p_deinit(wpa_s); 479 480#ifdef CONFIG_OFFCHANNEL 481 offchannel_deinit(wpa_s); 482#endif /* CONFIG_OFFCHANNEL */ 483 484 wpa_supplicant_cancel_sched_scan(wpa_s); 485 486 os_free(wpa_s->next_scan_freqs); 487 wpa_s->next_scan_freqs = NULL; 488 489 os_free(wpa_s->manual_scan_freqs); 490 wpa_s->manual_scan_freqs = NULL; 491 492 os_free(wpa_s->manual_sched_scan_freqs); 493 wpa_s->manual_sched_scan_freqs = NULL; 494 495 wpas_mac_addr_rand_scan_clear(wpa_s, MAC_ADDR_RAND_ALL); 496 497 /* 498 * Need to remove any pending gas-query radio work before the 499 * gas_query_deinit() call because gas_query::work has not yet been set 500 * for works that have not been started. gas_query_free() will be unable 501 * to cancel such pending radio works and once the pending gas-query 502 * radio work eventually gets removed, the deinit notification call to 503 * gas_query_start_cb() would result in dereferencing freed memory. 504 */ 505 if (wpa_s->radio) 506 radio_remove_works(wpa_s, "gas-query", 0); 507 gas_query_deinit(wpa_s->gas); 508 wpa_s->gas = NULL; 509 510 free_hw_features(wpa_s); 511 512 ieee802_1x_dealloc_kay_sm(wpa_s); 513 514 os_free(wpa_s->bssid_filter); 515 wpa_s->bssid_filter = NULL; 516 517 os_free(wpa_s->disallow_aps_bssid); 518 wpa_s->disallow_aps_bssid = NULL; 519 os_free(wpa_s->disallow_aps_ssid); 520 wpa_s->disallow_aps_ssid = NULL; 521 522 wnm_bss_keep_alive_deinit(wpa_s); 523#ifdef CONFIG_WNM 524 wnm_deallocate_memory(wpa_s); 525#endif /* CONFIG_WNM */ 526 527 ext_password_deinit(wpa_s->ext_pw); 528 wpa_s->ext_pw = NULL; 529 530 wpabuf_free(wpa_s->last_gas_resp); 531 wpa_s->last_gas_resp = NULL; 532 wpabuf_free(wpa_s->prev_gas_resp); 533 wpa_s->prev_gas_resp = NULL; 534 535 os_free(wpa_s->last_scan_res); 536 wpa_s->last_scan_res = NULL; 537 538#ifdef CONFIG_HS20 539 hs20_deinit(wpa_s); 540#endif /* CONFIG_HS20 */ 541 542 for (i = 0; i < NUM_VENDOR_ELEM_FRAMES; i++) { 543 wpabuf_free(wpa_s->vendor_elem[i]); 544 wpa_s->vendor_elem[i] = NULL; 545 } 546 547 wmm_ac_notify_disassoc(wpa_s); 548 549 wpa_s->sched_scan_plans_num = 0; 550 os_free(wpa_s->sched_scan_plans); 551 wpa_s->sched_scan_plans = NULL; 552} 553 554 555/** 556 * wpa_clear_keys - Clear keys configured for the driver 557 * @wpa_s: Pointer to wpa_supplicant data 558 * @addr: Previously used BSSID or %NULL if not available 559 * 560 * This function clears the encryption keys that has been previously configured 561 * for the driver. 562 */ 563void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr) 564{ 565 int i, max; 566 567#ifdef CONFIG_IEEE80211W 568 max = 6; 569#else /* CONFIG_IEEE80211W */ 570 max = 4; 571#endif /* CONFIG_IEEE80211W */ 572 573 /* MLME-DELETEKEYS.request */ 574 for (i = 0; i < max; i++) { 575 if (wpa_s->keys_cleared & BIT(i)) 576 continue; 577 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, i, 0, NULL, 0, 578 NULL, 0); 579 } 580 if (!(wpa_s->keys_cleared & BIT(0)) && addr && 581 !is_zero_ether_addr(addr)) { 582 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL, 583 0); 584 /* MLME-SETPROTECTION.request(None) */ 585 wpa_drv_mlme_setprotection( 586 wpa_s, addr, 587 MLME_SETPROTECTION_PROTECT_TYPE_NONE, 588 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); 589 } 590 wpa_s->keys_cleared = (u32) -1; 591} 592 593 594/** 595 * wpa_supplicant_state_txt - Get the connection state name as a text string 596 * @state: State (wpa_state; WPA_*) 597 * Returns: The state name as a printable text string 598 */ 599const char * wpa_supplicant_state_txt(enum wpa_states state) 600{ 601 switch (state) { 602 case WPA_DISCONNECTED: 603 return "DISCONNECTED"; 604 case WPA_INACTIVE: 605 return "INACTIVE"; 606 case WPA_INTERFACE_DISABLED: 607 return "INTERFACE_DISABLED"; 608 case WPA_SCANNING: 609 return "SCANNING"; 610 case WPA_AUTHENTICATING: 611 return "AUTHENTICATING"; 612 case WPA_ASSOCIATING: 613 return "ASSOCIATING"; 614 case WPA_ASSOCIATED: 615 return "ASSOCIATED"; 616 case WPA_4WAY_HANDSHAKE: 617 return "4WAY_HANDSHAKE"; 618 case WPA_GROUP_HANDSHAKE: 619 return "GROUP_HANDSHAKE"; 620 case WPA_COMPLETED: 621 return "COMPLETED"; 622 default: 623 return "UNKNOWN"; 624 } 625} 626 627 628#ifdef CONFIG_BGSCAN 629 630static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s) 631{ 632 const char *name; 633 634 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) 635 name = wpa_s->current_ssid->bgscan; 636 else 637 name = wpa_s->conf->bgscan; 638 if (name == NULL || name[0] == '\0') 639 return; 640 if (wpas_driver_bss_selection(wpa_s)) 641 return; 642 if (wpa_s->current_ssid == wpa_s->bgscan_ssid) 643 return; 644#ifdef CONFIG_P2P 645 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 646 return; 647#endif /* CONFIG_P2P */ 648 649 bgscan_deinit(wpa_s); 650 if (wpa_s->current_ssid) { 651 if (bgscan_init(wpa_s, wpa_s->current_ssid, name)) { 652 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 653 "bgscan"); 654 /* 655 * Live without bgscan; it is only used as a roaming 656 * optimization, so the initial connection is not 657 * affected. 658 */ 659 } else { 660 struct wpa_scan_results *scan_res; 661 wpa_s->bgscan_ssid = wpa_s->current_ssid; 662 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 663 0); 664 if (scan_res) { 665 bgscan_notify_scan(wpa_s, scan_res); 666 wpa_scan_results_free(scan_res); 667 } 668 } 669 } else 670 wpa_s->bgscan_ssid = NULL; 671} 672 673 674static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s) 675{ 676 if (wpa_s->bgscan_ssid != NULL) { 677 bgscan_deinit(wpa_s); 678 wpa_s->bgscan_ssid = NULL; 679 } 680} 681 682#endif /* CONFIG_BGSCAN */ 683 684 685static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s) 686{ 687 if (autoscan_init(wpa_s, 0)) 688 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan"); 689} 690 691 692static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s) 693{ 694 autoscan_deinit(wpa_s); 695} 696 697 698void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s) 699{ 700 if (wpa_s->wpa_state == WPA_DISCONNECTED || 701 wpa_s->wpa_state == WPA_SCANNING) { 702 autoscan_deinit(wpa_s); 703 wpa_supplicant_start_autoscan(wpa_s); 704 } 705} 706 707 708/** 709 * wpa_supplicant_set_state - Set current connection state 710 * @wpa_s: Pointer to wpa_supplicant data 711 * @state: The new connection state 712 * 713 * This function is called whenever the connection state changes, e.g., 714 * association is completed for WPA/WPA2 4-Way Handshake is started. 715 */ 716void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, 717 enum wpa_states state) 718{ 719 enum wpa_states old_state = wpa_s->wpa_state; 720 721 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s", 722 wpa_supplicant_state_txt(wpa_s->wpa_state), 723 wpa_supplicant_state_txt(state)); 724 725 if (state == WPA_INTERFACE_DISABLED) { 726 /* Assure normal scan when interface is restored */ 727 wpa_s->normal_scans = 0; 728 } 729 730 if (state == WPA_COMPLETED) { 731 wpas_connect_work_done(wpa_s); 732 /* Reinitialize normal_scan counter */ 733 wpa_s->normal_scans = 0; 734 } 735 736#ifdef CONFIG_P2P 737 /* 738 * P2PS client has to reply to Probe Request frames received on the 739 * group operating channel. Enable Probe Request frame reporting for 740 * P2P connected client in case p2p_cli_probe configuration property is 741 * set to 1. 742 */ 743 if (wpa_s->conf->p2p_cli_probe && wpa_s->current_ssid && 744 wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 745 wpa_s->current_ssid->p2p_group) { 746 if (state == WPA_COMPLETED && !wpa_s->p2p_cli_probe) { 747 wpa_dbg(wpa_s, MSG_DEBUG, 748 "P2P: Enable CLI Probe Request RX reporting"); 749 wpa_s->p2p_cli_probe = 750 wpa_drv_probe_req_report(wpa_s, 1) >= 0; 751 } else if (state != WPA_COMPLETED && wpa_s->p2p_cli_probe) { 752 wpa_dbg(wpa_s, MSG_DEBUG, 753 "P2P: Disable CLI Probe Request RX reporting"); 754 wpa_s->p2p_cli_probe = 0; 755 wpa_drv_probe_req_report(wpa_s, 0); 756 } 757 } 758#endif /* CONFIG_P2P */ 759 760 if (state != WPA_SCANNING) 761 wpa_supplicant_notify_scanning(wpa_s, 0); 762 763 if (state == WPA_COMPLETED && wpa_s->new_connection) { 764 struct wpa_ssid *ssid = wpa_s->current_ssid; 765#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 766 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to " 767 MACSTR " completed [id=%d id_str=%s]", 768 MAC2STR(wpa_s->bssid), 769 ssid ? ssid->id : -1, 770 ssid && ssid->id_str ? ssid->id_str : ""); 771#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 772 wpas_clear_temp_disabled(wpa_s, ssid, 1); 773 wpa_blacklist_clear(wpa_s); 774 wpa_s->extra_blacklist_count = 0; 775 wpa_s->new_connection = 0; 776 wpa_drv_set_operstate(wpa_s, 1); 777#ifndef IEEE8021X_EAPOL 778 wpa_drv_set_supp_port(wpa_s, 1); 779#endif /* IEEE8021X_EAPOL */ 780 wpa_s->after_wps = 0; 781 wpa_s->known_wps_freq = 0; 782 wpas_p2p_completed(wpa_s); 783 784 sme_sched_obss_scan(wpa_s, 1); 785 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING || 786 state == WPA_ASSOCIATED) { 787 wpa_s->new_connection = 1; 788 wpa_drv_set_operstate(wpa_s, 0); 789#ifndef IEEE8021X_EAPOL 790 wpa_drv_set_supp_port(wpa_s, 0); 791#endif /* IEEE8021X_EAPOL */ 792 sme_sched_obss_scan(wpa_s, 0); 793 } 794 wpa_s->wpa_state = state; 795 796#ifdef CONFIG_BGSCAN 797 if (state == WPA_COMPLETED) 798 wpa_supplicant_start_bgscan(wpa_s); 799 else if (state < WPA_ASSOCIATED) 800 wpa_supplicant_stop_bgscan(wpa_s); 801#endif /* CONFIG_BGSCAN */ 802 803 if (state == WPA_AUTHENTICATING) 804 wpa_supplicant_stop_autoscan(wpa_s); 805 806 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE) 807 wpa_supplicant_start_autoscan(wpa_s); 808 809 if (old_state >= WPA_ASSOCIATED && wpa_s->wpa_state < WPA_ASSOCIATED) 810 wmm_ac_notify_disassoc(wpa_s); 811 812 if (wpa_s->wpa_state != old_state) { 813 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 814 815 /* 816 * Notify the P2P Device interface about a state change in one 817 * of the interfaces. 818 */ 819 wpas_p2p_indicate_state_change(wpa_s); 820 821 if (wpa_s->wpa_state == WPA_COMPLETED || 822 old_state == WPA_COMPLETED) 823 wpas_notify_auth_changed(wpa_s); 824 } 825} 826 827 828void wpa_supplicant_terminate_proc(struct wpa_global *global) 829{ 830 int pending = 0; 831#ifdef CONFIG_WPS 832 struct wpa_supplicant *wpa_s = global->ifaces; 833 while (wpa_s) { 834 struct wpa_supplicant *next = wpa_s->next; 835 if (wpas_wps_terminate_pending(wpa_s) == 1) 836 pending = 1; 837#ifdef CONFIG_P2P 838 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE || 839 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)) 840 wpas_p2p_disconnect(wpa_s); 841#endif /* CONFIG_P2P */ 842 wpa_s = next; 843 } 844#endif /* CONFIG_WPS */ 845 if (pending) 846 return; 847 eloop_terminate(); 848} 849 850 851static void wpa_supplicant_terminate(int sig, void *signal_ctx) 852{ 853 struct wpa_global *global = signal_ctx; 854 wpa_supplicant_terminate_proc(global); 855} 856 857 858void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s) 859{ 860 enum wpa_states old_state = wpa_s->wpa_state; 861 862 wpa_s->pairwise_cipher = 0; 863 wpa_s->group_cipher = 0; 864 wpa_s->mgmt_group_cipher = 0; 865 wpa_s->key_mgmt = 0; 866 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED) 867 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 868 869 if (wpa_s->wpa_state != old_state) 870 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 871} 872 873 874/** 875 * wpa_supplicant_reload_configuration - Reload configuration data 876 * @wpa_s: Pointer to wpa_supplicant data 877 * Returns: 0 on success or -1 if configuration parsing failed 878 * 879 * This function can be used to request that the configuration data is reloaded 880 * (e.g., after configuration file change). This function is reloading 881 * configuration only for one interface, so this may need to be called multiple 882 * times if %wpa_supplicant is controlling multiple interfaces and all 883 * interfaces need reconfiguration. 884 */ 885int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s) 886{ 887 struct wpa_config *conf; 888 int reconf_ctrl; 889 int old_ap_scan; 890 891 if (wpa_s->confname == NULL) 892 return -1; 893 conf = wpa_config_read(wpa_s->confname, NULL); 894 if (conf == NULL) { 895 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration " 896 "file '%s' - exiting", wpa_s->confname); 897 return -1; 898 } 899 wpa_config_read(wpa_s->confanother, conf); 900 901 conf->changed_parameters = (unsigned int) -1; 902 903 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface 904 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface && 905 os_strcmp(conf->ctrl_interface, 906 wpa_s->conf->ctrl_interface) != 0); 907 908 if (reconf_ctrl && wpa_s->ctrl_iface) { 909 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 910 wpa_s->ctrl_iface = NULL; 911 } 912 913 eapol_sm_invalidate_cached_session(wpa_s->eapol); 914 if (wpa_s->current_ssid) { 915 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 916 wpa_s->own_disconnect_req = 1; 917 wpa_supplicant_deauthenticate(wpa_s, 918 WLAN_REASON_DEAUTH_LEAVING); 919 } 920 921 /* 922 * TODO: should notify EAPOL SM about changes in opensc_engine_path, 923 * pkcs11_engine_path, pkcs11_module_path, openssl_ciphers. 924 */ 925 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 926 /* 927 * Clear forced success to clear EAP state for next 928 * authentication. 929 */ 930 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 931 } 932 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 933 wpa_sm_set_config(wpa_s->wpa, NULL); 934 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL); 935 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 936 rsn_preauth_deinit(wpa_s->wpa); 937 938 old_ap_scan = wpa_s->conf->ap_scan; 939 wpa_config_free(wpa_s->conf); 940 wpa_s->conf = conf; 941 if (old_ap_scan != wpa_s->conf->ap_scan) 942 wpas_notify_ap_scan_changed(wpa_s); 943 944 if (reconf_ctrl) 945 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 946 947 wpa_supplicant_update_config(wpa_s); 948 949 wpa_supplicant_clear_status(wpa_s); 950 if (wpa_supplicant_enabled_networks(wpa_s)) { 951 wpa_s->reassociate = 1; 952 wpa_supplicant_req_scan(wpa_s, 0, 0); 953 } 954 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed"); 955 return 0; 956} 957 958 959static void wpa_supplicant_reconfig(int sig, void *signal_ctx) 960{ 961 struct wpa_global *global = signal_ctx; 962 struct wpa_supplicant *wpa_s; 963 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 964 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring", 965 sig); 966 if (wpa_supplicant_reload_configuration(wpa_s) < 0) { 967 wpa_supplicant_terminate_proc(global); 968 } 969 } 970 971 if (wpa_debug_reopen_file() < 0) { 972 /* Ignore errors since we cannot really do much to fix this */ 973 wpa_printf(MSG_DEBUG, "Could not reopen debug log file"); 974 } 975} 976 977 978static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s, 979 struct wpa_ssid *ssid, 980 struct wpa_ie_data *ie) 981{ 982 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie); 983 if (ret) { 984 if (ret == -2) { 985 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE " 986 "from association info"); 987 } 988 return -1; 989 } 990 991 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set " 992 "cipher suites"); 993 if (!(ie->group_cipher & ssid->group_cipher)) { 994 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group " 995 "cipher 0x%x (mask 0x%x) - reject", 996 ie->group_cipher, ssid->group_cipher); 997 return -1; 998 } 999 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) { 1000 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise " 1001 "cipher 0x%x (mask 0x%x) - reject", 1002 ie->pairwise_cipher, ssid->pairwise_cipher); 1003 return -1; 1004 } 1005 if (!(ie->key_mgmt & ssid->key_mgmt)) { 1006 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key " 1007 "management 0x%x (mask 0x%x) - reject", 1008 ie->key_mgmt, ssid->key_mgmt); 1009 return -1; 1010 } 1011 1012#ifdef CONFIG_IEEE80211W 1013 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) && 1014 wpas_get_ssid_pmf(wpa_s, ssid) == MGMT_FRAME_PROTECTION_REQUIRED) { 1015 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP " 1016 "that does not support management frame protection - " 1017 "reject"); 1018 return -1; 1019 } 1020#endif /* CONFIG_IEEE80211W */ 1021 1022 return 0; 1023} 1024 1025 1026/** 1027 * wpa_supplicant_set_suites - Set authentication and encryption parameters 1028 * @wpa_s: Pointer to wpa_supplicant data 1029 * @bss: Scan results for the selected BSS, or %NULL if not available 1030 * @ssid: Configuration data for the selected network 1031 * @wpa_ie: Buffer for the WPA/RSN IE 1032 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the 1033 * used buffer length in case the functions returns success. 1034 * Returns: 0 on success or -1 on failure 1035 * 1036 * This function is used to configure authentication and encryption parameters 1037 * based on the network configuration and scan result for the selected BSS (if 1038 * available). 1039 */ 1040int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s, 1041 struct wpa_bss *bss, struct wpa_ssid *ssid, 1042 u8 *wpa_ie, size_t *wpa_ie_len) 1043{ 1044 struct wpa_ie_data ie; 1045 int sel, proto; 1046 const u8 *bss_wpa, *bss_rsn, *bss_osen; 1047 1048 if (bss) { 1049 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 1050 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1051 bss_osen = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 1052 } else 1053 bss_wpa = bss_rsn = bss_osen = NULL; 1054 1055 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) && 1056 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 && 1057 (ie.group_cipher & ssid->group_cipher) && 1058 (ie.pairwise_cipher & ssid->pairwise_cipher) && 1059 (ie.key_mgmt & ssid->key_mgmt)) { 1060 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0"); 1061 proto = WPA_PROTO_RSN; 1062 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) && 1063 wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie) == 0 && 1064 (ie.group_cipher & ssid->group_cipher) && 1065 (ie.pairwise_cipher & ssid->pairwise_cipher) && 1066 (ie.key_mgmt & ssid->key_mgmt)) { 1067 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0"); 1068 proto = WPA_PROTO_WPA; 1069#ifdef CONFIG_HS20 1070 } else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) { 1071 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN"); 1072 /* TODO: parse OSEN element */ 1073 os_memset(&ie, 0, sizeof(ie)); 1074 ie.group_cipher = WPA_CIPHER_CCMP; 1075 ie.pairwise_cipher = WPA_CIPHER_CCMP; 1076 ie.key_mgmt = WPA_KEY_MGMT_OSEN; 1077 proto = WPA_PROTO_OSEN; 1078#endif /* CONFIG_HS20 */ 1079 } else if (bss) { 1080 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN"); 1081 wpa_dbg(wpa_s, MSG_DEBUG, 1082 "WPA: ssid proto=0x%x pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1083 ssid->proto, ssid->pairwise_cipher, ssid->group_cipher, 1084 ssid->key_mgmt); 1085 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: BSS " MACSTR " ssid='%s'%s%s%s", 1086 MAC2STR(bss->bssid), 1087 wpa_ssid_txt(bss->ssid, bss->ssid_len), 1088 bss_wpa ? " WPA" : "", 1089 bss_rsn ? " RSN" : "", 1090 bss_osen ? " OSEN" : ""); 1091 if (bss_rsn) { 1092 wpa_hexdump(MSG_DEBUG, "RSN", bss_rsn, 2 + bss_rsn[1]); 1093 if (wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie)) { 1094 wpa_dbg(wpa_s, MSG_DEBUG, 1095 "Could not parse RSN element"); 1096 } else { 1097 wpa_dbg(wpa_s, MSG_DEBUG, 1098 "RSN: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1099 ie.pairwise_cipher, ie.group_cipher, 1100 ie.key_mgmt); 1101 } 1102 } 1103 if (bss_wpa) { 1104 wpa_hexdump(MSG_DEBUG, "WPA", bss_wpa, 2 + bss_wpa[1]); 1105 if (wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie)) { 1106 wpa_dbg(wpa_s, MSG_DEBUG, 1107 "Could not parse WPA element"); 1108 } else { 1109 wpa_dbg(wpa_s, MSG_DEBUG, 1110 "WPA: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1111 ie.pairwise_cipher, ie.group_cipher, 1112 ie.key_mgmt); 1113 } 1114 } 1115 return -1; 1116 } else { 1117 if (ssid->proto & WPA_PROTO_OSEN) 1118 proto = WPA_PROTO_OSEN; 1119 else if (ssid->proto & WPA_PROTO_RSN) 1120 proto = WPA_PROTO_RSN; 1121 else 1122 proto = WPA_PROTO_WPA; 1123 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) { 1124 os_memset(&ie, 0, sizeof(ie)); 1125 ie.group_cipher = ssid->group_cipher; 1126 ie.pairwise_cipher = ssid->pairwise_cipher; 1127 ie.key_mgmt = ssid->key_mgmt; 1128#ifdef CONFIG_IEEE80211W 1129 ie.mgmt_group_cipher = 1130 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ? 1131 WPA_CIPHER_AES_128_CMAC : 0; 1132#endif /* CONFIG_IEEE80211W */ 1133 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites " 1134 "based on configuration"); 1135 } else 1136 proto = ie.proto; 1137 } 1138 1139 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d " 1140 "pairwise %d key_mgmt %d proto %d", 1141 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto); 1142#ifdef CONFIG_IEEE80211W 1143 if (ssid->ieee80211w) { 1144 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d", 1145 ie.mgmt_group_cipher); 1146 } 1147#endif /* CONFIG_IEEE80211W */ 1148 1149 wpa_s->wpa_proto = proto; 1150 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto); 1151 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 1152 !!(ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN))); 1153 1154 if (bss || !wpa_s->ap_ies_from_associnfo) { 1155 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 1156 bss_wpa ? 2 + bss_wpa[1] : 0) || 1157 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 1158 bss_rsn ? 2 + bss_rsn[1] : 0)) 1159 return -1; 1160 } 1161 1162#ifdef CONFIG_NO_WPA 1163 wpa_s->group_cipher = WPA_CIPHER_NONE; 1164 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 1165#else /* CONFIG_NO_WPA */ 1166 sel = ie.group_cipher & ssid->group_cipher; 1167 wpa_s->group_cipher = wpa_pick_group_cipher(sel); 1168 if (wpa_s->group_cipher < 0) { 1169 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group " 1170 "cipher"); 1171 return -1; 1172 } 1173 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK %s", 1174 wpa_cipher_txt(wpa_s->group_cipher)); 1175 1176 sel = ie.pairwise_cipher & ssid->pairwise_cipher; 1177 wpa_s->pairwise_cipher = wpa_pick_pairwise_cipher(sel, 1); 1178 if (wpa_s->pairwise_cipher < 0) { 1179 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise " 1180 "cipher"); 1181 return -1; 1182 } 1183 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK %s", 1184 wpa_cipher_txt(wpa_s->pairwise_cipher)); 1185#endif /* CONFIG_NO_WPA */ 1186 1187 sel = ie.key_mgmt & ssid->key_mgmt; 1188#ifdef CONFIG_SAE 1189 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE)) 1190 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE); 1191#endif /* CONFIG_SAE */ 1192 if (0) { 1193#ifdef CONFIG_SUITEB192 1194 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { 1195 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B_192; 1196 wpa_dbg(wpa_s, MSG_DEBUG, 1197 "WPA: using KEY_MGMT 802.1X with Suite B (192-bit)"); 1198#endif /* CONFIG_SUITEB192 */ 1199#ifdef CONFIG_SUITEB 1200 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B) { 1201 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B; 1202 wpa_dbg(wpa_s, MSG_DEBUG, 1203 "WPA: using KEY_MGMT 802.1X with Suite B"); 1204#endif /* CONFIG_SUITEB */ 1205#ifdef CONFIG_IEEE80211R 1206 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) { 1207 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; 1208 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X"); 1209 } else if (sel & WPA_KEY_MGMT_FT_PSK) { 1210 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK; 1211 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK"); 1212#endif /* CONFIG_IEEE80211R */ 1213#ifdef CONFIG_SAE 1214 } else if (sel & WPA_KEY_MGMT_SAE) { 1215 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE; 1216 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE"); 1217 } else if (sel & WPA_KEY_MGMT_FT_SAE) { 1218 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE; 1219 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE"); 1220#endif /* CONFIG_SAE */ 1221#ifdef CONFIG_IEEE80211W 1222 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) { 1223 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; 1224 wpa_dbg(wpa_s, MSG_DEBUG, 1225 "WPA: using KEY_MGMT 802.1X with SHA256"); 1226 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) { 1227 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256; 1228 wpa_dbg(wpa_s, MSG_DEBUG, 1229 "WPA: using KEY_MGMT PSK with SHA256"); 1230#endif /* CONFIG_IEEE80211W */ 1231 } else if (sel & WPA_KEY_MGMT_IEEE8021X) { 1232 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 1233 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X"); 1234 } else if (sel & WPA_KEY_MGMT_PSK) { 1235 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK; 1236 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK"); 1237 } else if (sel & WPA_KEY_MGMT_WPA_NONE) { 1238 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE; 1239 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE"); 1240#ifdef CONFIG_HS20 1241 } else if (sel & WPA_KEY_MGMT_OSEN) { 1242 wpa_s->key_mgmt = WPA_KEY_MGMT_OSEN; 1243 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using KEY_MGMT OSEN"); 1244#endif /* CONFIG_HS20 */ 1245 } else { 1246 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select " 1247 "authenticated key management type"); 1248 return -1; 1249 } 1250 1251 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 1252 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 1253 wpa_s->pairwise_cipher); 1254 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 1255 1256#ifdef CONFIG_IEEE80211W 1257 sel = ie.mgmt_group_cipher; 1258 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION || 1259 !(ie.capabilities & WPA_CAPABILITY_MFPC)) 1260 sel = 0; 1261 if (sel & WPA_CIPHER_AES_128_CMAC) { 1262 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 1263 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1264 "AES-128-CMAC"); 1265 } else if (sel & WPA_CIPHER_BIP_GMAC_128) { 1266 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_128; 1267 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1268 "BIP-GMAC-128"); 1269 } else if (sel & WPA_CIPHER_BIP_GMAC_256) { 1270 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_256; 1271 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1272 "BIP-GMAC-256"); 1273 } else if (sel & WPA_CIPHER_BIP_CMAC_256) { 1274 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_CMAC_256; 1275 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1276 "BIP-CMAC-256"); 1277 } else { 1278 wpa_s->mgmt_group_cipher = 0; 1279 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher"); 1280 } 1281 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 1282 wpa_s->mgmt_group_cipher); 1283 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, 1284 wpas_get_ssid_pmf(wpa_s, ssid)); 1285#endif /* CONFIG_IEEE80211W */ 1286 1287 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) { 1288 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE"); 1289 return -1; 1290 } 1291 1292 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) { 1293 int psk_set = 0; 1294 1295 if (ssid->psk_set) { 1296 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN, NULL); 1297 psk_set = 1; 1298 } 1299#ifndef CONFIG_NO_PBKDF2 1300 if (bss && ssid->bssid_set && ssid->ssid_len == 0 && 1301 ssid->passphrase) { 1302 u8 psk[PMK_LEN]; 1303 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len, 1304 4096, psk, PMK_LEN); 1305 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 1306 psk, PMK_LEN); 1307 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1308 psk_set = 1; 1309 os_memset(psk, 0, sizeof(psk)); 1310 } 1311#endif /* CONFIG_NO_PBKDF2 */ 1312#ifdef CONFIG_EXT_PASSWORD 1313 if (ssid->ext_psk) { 1314 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw, 1315 ssid->ext_psk); 1316 char pw_str[64 + 1]; 1317 u8 psk[PMK_LEN]; 1318 1319 if (pw == NULL) { 1320 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK " 1321 "found from external storage"); 1322 return -1; 1323 } 1324 1325 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) { 1326 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected " 1327 "PSK length %d in external storage", 1328 (int) wpabuf_len(pw)); 1329 ext_password_free(pw); 1330 return -1; 1331 } 1332 1333 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw)); 1334 pw_str[wpabuf_len(pw)] = '\0'; 1335 1336#ifndef CONFIG_NO_PBKDF2 1337 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss) 1338 { 1339 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len, 1340 4096, psk, PMK_LEN); 1341 os_memset(pw_str, 0, sizeof(pw_str)); 1342 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from " 1343 "external passphrase)", 1344 psk, PMK_LEN); 1345 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1346 psk_set = 1; 1347 os_memset(psk, 0, sizeof(psk)); 1348 } else 1349#endif /* CONFIG_NO_PBKDF2 */ 1350 if (wpabuf_len(pw) == 2 * PMK_LEN) { 1351 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) { 1352 wpa_msg(wpa_s, MSG_INFO, "EXT PW: " 1353 "Invalid PSK hex string"); 1354 os_memset(pw_str, 0, sizeof(pw_str)); 1355 ext_password_free(pw); 1356 return -1; 1357 } 1358 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1359 psk_set = 1; 1360 os_memset(psk, 0, sizeof(psk)); 1361 } else { 1362 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable " 1363 "PSK available"); 1364 os_memset(pw_str, 0, sizeof(pw_str)); 1365 ext_password_free(pw); 1366 return -1; 1367 } 1368 1369 os_memset(pw_str, 0, sizeof(pw_str)); 1370 ext_password_free(pw); 1371 } 1372#endif /* CONFIG_EXT_PASSWORD */ 1373 1374 if (!psk_set) { 1375 wpa_msg(wpa_s, MSG_INFO, 1376 "No PSK available for association"); 1377 return -1; 1378 } 1379 } else 1380 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 1381 1382 return 0; 1383} 1384 1385 1386static void wpas_ext_capab_byte(struct wpa_supplicant *wpa_s, u8 *pos, int idx) 1387{ 1388 *pos = 0x00; 1389 1390 switch (idx) { 1391 case 0: /* Bits 0-7 */ 1392 break; 1393 case 1: /* Bits 8-15 */ 1394 break; 1395 case 2: /* Bits 16-23 */ 1396#ifdef CONFIG_WNM 1397 *pos |= 0x02; /* Bit 17 - WNM-Sleep Mode */ 1398 *pos |= 0x08; /* Bit 19 - BSS Transition */ 1399#endif /* CONFIG_WNM */ 1400 break; 1401 case 3: /* Bits 24-31 */ 1402#ifdef CONFIG_WNM 1403 *pos |= 0x02; /* Bit 25 - SSID List */ 1404#endif /* CONFIG_WNM */ 1405#ifdef CONFIG_INTERWORKING 1406 if (wpa_s->conf->interworking) 1407 *pos |= 0x80; /* Bit 31 - Interworking */ 1408#endif /* CONFIG_INTERWORKING */ 1409 break; 1410 case 4: /* Bits 32-39 */ 1411#ifdef CONFIG_INTERWORKING 1412 if (wpa_s->drv_flags / WPA_DRIVER_FLAGS_QOS_MAPPING) 1413 *pos |= 0x01; /* Bit 32 - QoS Map */ 1414#endif /* CONFIG_INTERWORKING */ 1415 break; 1416 case 5: /* Bits 40-47 */ 1417#ifdef CONFIG_HS20 1418 if (wpa_s->conf->hs20) 1419 *pos |= 0x40; /* Bit 46 - WNM-Notification */ 1420#endif /* CONFIG_HS20 */ 1421 break; 1422 case 6: /* Bits 48-55 */ 1423 break; 1424 } 1425} 1426 1427 1428int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf, size_t buflen) 1429{ 1430 u8 *pos = buf; 1431 u8 len = 6, i; 1432 1433 if (len < wpa_s->extended_capa_len) 1434 len = wpa_s->extended_capa_len; 1435 if (buflen < (size_t) len + 2) { 1436 wpa_printf(MSG_INFO, 1437 "Not enough room for building extended capabilities element"); 1438 return -1; 1439 } 1440 1441 *pos++ = WLAN_EID_EXT_CAPAB; 1442 *pos++ = len; 1443 for (i = 0; i < len; i++, pos++) { 1444 wpas_ext_capab_byte(wpa_s, pos, i); 1445 1446 if (i < wpa_s->extended_capa_len) { 1447 *pos &= ~wpa_s->extended_capa_mask[i]; 1448 *pos |= wpa_s->extended_capa[i]; 1449 } 1450 } 1451 1452 while (len > 0 && buf[1 + len] == 0) { 1453 len--; 1454 buf[1] = len; 1455 } 1456 if (len == 0) 1457 return 0; 1458 1459 return 2 + len; 1460} 1461 1462 1463static int wpas_valid_bss(struct wpa_supplicant *wpa_s, 1464 struct wpa_bss *test_bss) 1465{ 1466 struct wpa_bss *bss; 1467 1468 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1469 if (bss == test_bss) 1470 return 1; 1471 } 1472 1473 return 0; 1474} 1475 1476 1477static int wpas_valid_ssid(struct wpa_supplicant *wpa_s, 1478 struct wpa_ssid *test_ssid) 1479{ 1480 struct wpa_ssid *ssid; 1481 1482 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1483 if (ssid == test_ssid) 1484 return 1; 1485 } 1486 1487 return 0; 1488} 1489 1490 1491int wpas_valid_bss_ssid(struct wpa_supplicant *wpa_s, struct wpa_bss *test_bss, 1492 struct wpa_ssid *test_ssid) 1493{ 1494 if (test_bss && !wpas_valid_bss(wpa_s, test_bss)) 1495 return 0; 1496 1497 return test_ssid == NULL || wpas_valid_ssid(wpa_s, test_ssid); 1498} 1499 1500 1501void wpas_connect_work_free(struct wpa_connect_work *cwork) 1502{ 1503 if (cwork == NULL) 1504 return; 1505 os_free(cwork); 1506} 1507 1508 1509void wpas_connect_work_done(struct wpa_supplicant *wpa_s) 1510{ 1511 struct wpa_connect_work *cwork; 1512 struct wpa_radio_work *work = wpa_s->connect_work; 1513 1514 if (!work) 1515 return; 1516 1517 wpa_s->connect_work = NULL; 1518 cwork = work->ctx; 1519 work->ctx = NULL; 1520 wpas_connect_work_free(cwork); 1521 radio_work_done(work); 1522} 1523 1524 1525int wpas_update_random_addr(struct wpa_supplicant *wpa_s, int style) 1526{ 1527 struct os_reltime now; 1528 u8 addr[ETH_ALEN]; 1529 1530 os_get_reltime(&now); 1531 if (wpa_s->last_mac_addr_style == style && 1532 wpa_s->last_mac_addr_change.sec != 0 && 1533 !os_reltime_expired(&now, &wpa_s->last_mac_addr_change, 1534 wpa_s->conf->rand_addr_lifetime)) { 1535 wpa_msg(wpa_s, MSG_DEBUG, 1536 "Previously selected random MAC address has not yet expired"); 1537 return 0; 1538 } 1539 1540 switch (style) { 1541 case 1: 1542 if (random_mac_addr(addr) < 0) 1543 return -1; 1544 break; 1545 case 2: 1546 os_memcpy(addr, wpa_s->perm_addr, ETH_ALEN); 1547 if (random_mac_addr_keep_oui(addr) < 0) 1548 return -1; 1549 break; 1550 default: 1551 return -1; 1552 } 1553 1554 if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) { 1555 wpa_msg(wpa_s, MSG_INFO, 1556 "Failed to set random MAC address"); 1557 return -1; 1558 } 1559 1560 os_get_reltime(&wpa_s->last_mac_addr_change); 1561 wpa_s->mac_addr_changed = 1; 1562 wpa_s->last_mac_addr_style = style; 1563 1564 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 1565 wpa_msg(wpa_s, MSG_INFO, 1566 "Could not update MAC address information"); 1567 return -1; 1568 } 1569 1570 wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR, 1571 MAC2STR(addr)); 1572 1573 return 0; 1574} 1575 1576 1577int wpas_update_random_addr_disassoc(struct wpa_supplicant *wpa_s) 1578{ 1579 if (wpa_s->wpa_state >= WPA_AUTHENTICATING || 1580 !wpa_s->conf->preassoc_mac_addr) 1581 return 0; 1582 1583 return wpas_update_random_addr(wpa_s, wpa_s->conf->preassoc_mac_addr); 1584} 1585 1586 1587static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit); 1588 1589/** 1590 * wpa_supplicant_associate - Request association 1591 * @wpa_s: Pointer to wpa_supplicant data 1592 * @bss: Scan results for the selected BSS, or %NULL if not available 1593 * @ssid: Configuration data for the selected network 1594 * 1595 * This function is used to request %wpa_supplicant to associate with a BSS. 1596 */ 1597void wpa_supplicant_associate(struct wpa_supplicant *wpa_s, 1598 struct wpa_bss *bss, struct wpa_ssid *ssid) 1599{ 1600 struct wpa_connect_work *cwork; 1601 int rand_style; 1602 1603 wpa_s->own_disconnect_req = 0; 1604 1605 /* 1606 * If we are starting a new connection, any previously pending EAPOL 1607 * RX cannot be valid anymore. 1608 */ 1609 wpabuf_free(wpa_s->pending_eapol_rx); 1610 wpa_s->pending_eapol_rx = NULL; 1611 1612 if (ssid->mac_addr == -1) 1613 rand_style = wpa_s->conf->mac_addr; 1614 else 1615 rand_style = ssid->mac_addr; 1616 1617 wmm_ac_clear_saved_tspecs(wpa_s); 1618 wpa_s->reassoc_same_bss = 0; 1619 1620 if (wpa_s->last_ssid == ssid) { 1621 wpa_dbg(wpa_s, MSG_DEBUG, "Re-association to the same ESS"); 1622 if (wpa_s->current_bss && wpa_s->current_bss == bss) { 1623 wmm_ac_save_tspecs(wpa_s); 1624 wpa_s->reassoc_same_bss = 1; 1625 } 1626 } else if (rand_style > 0) { 1627 if (wpas_update_random_addr(wpa_s, rand_style) < 0) 1628 return; 1629 wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid); 1630 } else if (wpa_s->mac_addr_changed) { 1631 if (wpa_drv_set_mac_addr(wpa_s, NULL) < 0) { 1632 wpa_msg(wpa_s, MSG_INFO, 1633 "Could not restore permanent MAC address"); 1634 return; 1635 } 1636 wpa_s->mac_addr_changed = 0; 1637 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 1638 wpa_msg(wpa_s, MSG_INFO, 1639 "Could not update MAC address information"); 1640 return; 1641 } 1642 wpa_msg(wpa_s, MSG_DEBUG, "Using permanent MAC address"); 1643 } 1644 wpa_s->last_ssid = ssid; 1645 1646#ifdef CONFIG_IBSS_RSN 1647 ibss_rsn_deinit(wpa_s->ibss_rsn); 1648 wpa_s->ibss_rsn = NULL; 1649#endif /* CONFIG_IBSS_RSN */ 1650 1651 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO || 1652 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1653#ifdef CONFIG_AP 1654 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) { 1655 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP " 1656 "mode"); 1657 return; 1658 } 1659 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) { 1660 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1661 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) 1662 wpas_p2p_ap_setup_failed(wpa_s); 1663 return; 1664 } 1665 wpa_s->current_bss = bss; 1666#else /* CONFIG_AP */ 1667 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in " 1668 "the build"); 1669#endif /* CONFIG_AP */ 1670 return; 1671 } 1672 1673 if (ssid->mode == WPAS_MODE_MESH) { 1674#ifdef CONFIG_MESH 1675 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MESH)) { 1676 wpa_msg(wpa_s, MSG_INFO, 1677 "Driver does not support mesh mode"); 1678 return; 1679 } 1680 if (bss) 1681 ssid->frequency = bss->freq; 1682 if (wpa_supplicant_join_mesh(wpa_s, ssid) < 0) { 1683 wpa_msg(wpa_s, MSG_ERROR, "Could not join mesh"); 1684 return; 1685 } 1686 wpa_s->current_bss = bss; 1687 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_STARTED "ssid=\"%s\" id=%d", 1688 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 1689 ssid->id); 1690#else /* CONFIG_MESH */ 1691 wpa_msg(wpa_s, MSG_ERROR, 1692 "mesh mode support not included in the build"); 1693#endif /* CONFIG_MESH */ 1694 return; 1695 } 1696 1697#ifdef CONFIG_TDLS 1698 if (bss) 1699 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1), 1700 bss->ie_len); 1701#endif /* CONFIG_TDLS */ 1702 1703 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1704 ssid->mode == IEEE80211_MODE_INFRA) { 1705 sme_authenticate(wpa_s, bss, ssid); 1706 return; 1707 } 1708 1709 if (wpa_s->connect_work) { 1710 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since connect_work exist"); 1711 return; 1712 } 1713 1714 if (radio_work_pending(wpa_s, "connect")) { 1715 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since pending work exist"); 1716 return; 1717 } 1718 1719 wpas_abort_ongoing_scan(wpa_s); 1720 1721 cwork = os_zalloc(sizeof(*cwork)); 1722 if (cwork == NULL) 1723 return; 1724 1725 cwork->bss = bss; 1726 cwork->ssid = ssid; 1727 1728 if (radio_add_work(wpa_s, bss ? bss->freq : 0, "connect", 1, 1729 wpas_start_assoc_cb, cwork) < 0) { 1730 os_free(cwork); 1731 } 1732} 1733 1734 1735static int bss_is_ibss(struct wpa_bss *bss) 1736{ 1737 return (bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 1738 IEEE80211_CAP_IBSS; 1739} 1740 1741 1742static int drv_supports_vht(struct wpa_supplicant *wpa_s, 1743 const struct wpa_ssid *ssid) 1744{ 1745 enum hostapd_hw_mode hw_mode; 1746 struct hostapd_hw_modes *mode = NULL; 1747 u8 channel; 1748 int i; 1749 1750#ifdef CONFIG_HT_OVERRIDES 1751 if (ssid->disable_ht) 1752 return 0; 1753#endif /* CONFIG_HT_OVERRIDES */ 1754 1755 hw_mode = ieee80211_freq_to_chan(ssid->frequency, &channel); 1756 if (hw_mode == NUM_HOSTAPD_MODES) 1757 return 0; 1758 for (i = 0; wpa_s->hw.modes && i < wpa_s->hw.num_modes; i++) { 1759 if (wpa_s->hw.modes[i].mode == hw_mode) { 1760 mode = &wpa_s->hw.modes[i]; 1761 break; 1762 } 1763 } 1764 1765 if (!mode) 1766 return 0; 1767 1768 return mode->vht_capab != 0; 1769} 1770 1771 1772void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s, 1773 const struct wpa_ssid *ssid, 1774 struct hostapd_freq_params *freq) 1775{ 1776 enum hostapd_hw_mode hw_mode; 1777 struct hostapd_hw_modes *mode = NULL; 1778 int ht40plus[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157, 1779 184, 192 }; 1780 int vht80[] = { 36, 52, 100, 116, 132, 149 }; 1781 struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL; 1782 u8 channel; 1783 int i, chan_idx, ht40 = -1, res, obss_scan = 1; 1784 unsigned int j, k; 1785 struct hostapd_freq_params vht_freq; 1786 int chwidth, seg0, seg1; 1787 u32 vht_caps = 0; 1788 1789 freq->freq = ssid->frequency; 1790 1791 for (j = 0; j < wpa_s->last_scan_res_used; j++) { 1792 struct wpa_bss *bss = wpa_s->last_scan_res[j]; 1793 1794 if (ssid->mode != WPAS_MODE_IBSS) 1795 break; 1796 1797 /* Don't adjust control freq in case of fixed_freq */ 1798 if (ssid->fixed_freq) 1799 break; 1800 1801 if (!bss_is_ibss(bss)) 1802 continue; 1803 1804 if (ssid->ssid_len == bss->ssid_len && 1805 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) == 0) { 1806 wpa_printf(MSG_DEBUG, 1807 "IBSS already found in scan results, adjust control freq: %d", 1808 bss->freq); 1809 freq->freq = bss->freq; 1810 obss_scan = 0; 1811 break; 1812 } 1813 } 1814 1815 /* For IBSS check HT_IBSS flag */ 1816 if (ssid->mode == WPAS_MODE_IBSS && 1817 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_HT_IBSS)) 1818 return; 1819 1820 if (wpa_s->group_cipher == WPA_CIPHER_WEP40 || 1821 wpa_s->group_cipher == WPA_CIPHER_WEP104 || 1822 wpa_s->pairwise_cipher == WPA_CIPHER_TKIP) { 1823 wpa_printf(MSG_DEBUG, 1824 "IBSS: WEP/TKIP detected, do not try to enable HT"); 1825 return; 1826 } 1827 1828 hw_mode = ieee80211_freq_to_chan(freq->freq, &channel); 1829 for (i = 0; wpa_s->hw.modes && i < wpa_s->hw.num_modes; i++) { 1830 if (wpa_s->hw.modes[i].mode == hw_mode) { 1831 mode = &wpa_s->hw.modes[i]; 1832 break; 1833 } 1834 } 1835 1836 if (!mode) 1837 return; 1838 1839 freq->ht_enabled = ht_supported(mode); 1840 if (!freq->ht_enabled) 1841 return; 1842 1843 /* Setup higher BW only for 5 GHz */ 1844 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 1845 return; 1846 1847 for (chan_idx = 0; chan_idx < mode->num_channels; chan_idx++) { 1848 pri_chan = &mode->channels[chan_idx]; 1849 if (pri_chan->chan == channel) 1850 break; 1851 pri_chan = NULL; 1852 } 1853 if (!pri_chan) 1854 return; 1855 1856 /* Check primary channel flags */ 1857 if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1858 return; 1859 1860 /* Check/setup HT40+/HT40- */ 1861 for (j = 0; j < ARRAY_SIZE(ht40plus); j++) { 1862 if (ht40plus[j] == channel) { 1863 ht40 = 1; 1864 break; 1865 } 1866 } 1867 1868 /* Find secondary channel */ 1869 for (i = 0; i < mode->num_channels; i++) { 1870 sec_chan = &mode->channels[i]; 1871 if (sec_chan->chan == channel + ht40 * 4) 1872 break; 1873 sec_chan = NULL; 1874 } 1875 if (!sec_chan) 1876 return; 1877 1878 /* Check secondary channel flags */ 1879 if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1880 return; 1881 1882 freq->channel = pri_chan->chan; 1883 1884 switch (ht40) { 1885 case -1: 1886 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS)) 1887 return; 1888 freq->sec_channel_offset = -1; 1889 break; 1890 case 1: 1891 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40PLUS)) 1892 return; 1893 freq->sec_channel_offset = 1; 1894 break; 1895 default: 1896 break; 1897 } 1898 1899 if (freq->sec_channel_offset && obss_scan) { 1900 struct wpa_scan_results *scan_res; 1901 1902 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0); 1903 if (scan_res == NULL) { 1904 /* Back to HT20 */ 1905 freq->sec_channel_offset = 0; 1906 return; 1907 } 1908 1909 res = check_40mhz_5g(mode, scan_res, pri_chan->chan, 1910 sec_chan->chan); 1911 switch (res) { 1912 case 0: 1913 /* Back to HT20 */ 1914 freq->sec_channel_offset = 0; 1915 break; 1916 case 1: 1917 /* Configuration allowed */ 1918 break; 1919 case 2: 1920 /* Switch pri/sec channels */ 1921 freq->freq = hw_get_freq(mode, sec_chan->chan); 1922 freq->sec_channel_offset = -freq->sec_channel_offset; 1923 freq->channel = sec_chan->chan; 1924 break; 1925 default: 1926 freq->sec_channel_offset = 0; 1927 break; 1928 } 1929 1930 wpa_scan_results_free(scan_res); 1931 } 1932 1933 wpa_printf(MSG_DEBUG, 1934 "IBSS/mesh: setup freq channel %d, sec_channel_offset %d", 1935 freq->channel, freq->sec_channel_offset); 1936 1937 if (!drv_supports_vht(wpa_s, ssid)) 1938 return; 1939 1940 /* For IBSS check VHT_IBSS flag */ 1941 if (ssid->mode == WPAS_MODE_IBSS && 1942 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_VHT_IBSS)) 1943 return; 1944 1945 vht_freq = *freq; 1946 1947 vht_freq.vht_enabled = vht_supported(mode); 1948 if (!vht_freq.vht_enabled) 1949 return; 1950 1951 /* setup center_freq1, bandwidth */ 1952 for (j = 0; j < ARRAY_SIZE(vht80); j++) { 1953 if (freq->channel >= vht80[j] && 1954 freq->channel < vht80[j] + 16) 1955 break; 1956 } 1957 1958 if (j == ARRAY_SIZE(vht80)) 1959 return; 1960 1961 for (i = vht80[j]; i < vht80[j] + 16; i += 4) { 1962 struct hostapd_channel_data *chan; 1963 1964 chan = hw_get_channel_chan(mode, i, NULL); 1965 if (!chan) 1966 return; 1967 1968 /* Back to HT configuration if channel not usable */ 1969 if (chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1970 return; 1971 } 1972 1973 chwidth = VHT_CHANWIDTH_80MHZ; 1974 seg0 = vht80[j] + 6; 1975 seg1 = 0; 1976 1977 if (ssid->max_oper_chwidth == VHT_CHANWIDTH_80P80MHZ) { 1978 /* setup center_freq2, bandwidth */ 1979 for (k = 0; k < ARRAY_SIZE(vht80); k++) { 1980 /* Only accept 80 MHz segments separated by a gap */ 1981 if (j == k || abs(vht80[j] - vht80[k]) == 16) 1982 continue; 1983 for (i = vht80[k]; i < vht80[k] + 16; i += 4) { 1984 struct hostapd_channel_data *chan; 1985 1986 chan = hw_get_channel_chan(mode, i, NULL); 1987 if (!chan) 1988 continue; 1989 1990 if (chan->flag & (HOSTAPD_CHAN_DISABLED | 1991 HOSTAPD_CHAN_NO_IR | 1992 HOSTAPD_CHAN_RADAR)) 1993 continue; 1994 1995 /* Found a suitable second segment for 80+80 */ 1996 chwidth = VHT_CHANWIDTH_80P80MHZ; 1997 vht_caps |= 1998 VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ; 1999 seg1 = vht80[k] + 6; 2000 } 2001 2002 if (chwidth == VHT_CHANWIDTH_80P80MHZ) 2003 break; 2004 } 2005 } 2006 2007 if (hostapd_set_freq_params(&vht_freq, mode->mode, freq->freq, 2008 freq->channel, freq->ht_enabled, 2009 vht_freq.vht_enabled, 2010 freq->sec_channel_offset, 2011 chwidth, seg0, seg1, vht_caps) != 0) 2012 return; 2013 2014 *freq = vht_freq; 2015 2016 wpa_printf(MSG_DEBUG, "IBSS: VHT setup freq cf1 %d, cf2 %d, bw %d", 2017 freq->center_freq1, freq->center_freq2, freq->bandwidth); 2018} 2019 2020 2021static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit) 2022{ 2023 struct wpa_connect_work *cwork = work->ctx; 2024 struct wpa_bss *bss = cwork->bss; 2025 struct wpa_ssid *ssid = cwork->ssid; 2026 struct wpa_supplicant *wpa_s = work->wpa_s; 2027 u8 wpa_ie[200]; 2028 size_t wpa_ie_len; 2029 int use_crypt, ret, i, bssid_changed; 2030 int algs = WPA_AUTH_ALG_OPEN; 2031 unsigned int cipher_pairwise, cipher_group; 2032 struct wpa_driver_associate_params params; 2033 int wep_keys_set = 0; 2034 int assoc_failed = 0; 2035 struct wpa_ssid *old_ssid; 2036#ifdef CONFIG_HT_OVERRIDES 2037 struct ieee80211_ht_capabilities htcaps; 2038 struct ieee80211_ht_capabilities htcaps_mask; 2039#endif /* CONFIG_HT_OVERRIDES */ 2040#ifdef CONFIG_VHT_OVERRIDES 2041 struct ieee80211_vht_capabilities vhtcaps; 2042 struct ieee80211_vht_capabilities vhtcaps_mask; 2043#endif /* CONFIG_VHT_OVERRIDES */ 2044 2045 if (deinit) { 2046 if (work->started) { 2047 wpa_s->connect_work = NULL; 2048 2049 /* cancel possible auth. timeout */ 2050 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, 2051 NULL); 2052 } 2053 wpas_connect_work_free(cwork); 2054 return; 2055 } 2056 2057 wpa_s->connect_work = work; 2058 2059 if (cwork->bss_removed || !wpas_valid_bss_ssid(wpa_s, bss, ssid) || 2060 wpas_network_disabled(wpa_s, ssid)) { 2061 wpa_dbg(wpa_s, MSG_DEBUG, "BSS/SSID entry for association not valid anymore - drop connection attempt"); 2062 wpas_connect_work_done(wpa_s); 2063 return; 2064 } 2065 2066 os_memset(¶ms, 0, sizeof(params)); 2067 wpa_s->reassociate = 0; 2068 wpa_s->eap_expected_failure = 0; 2069 if (bss && 2070 (!wpas_driver_bss_selection(wpa_s) || wpas_wps_searching(wpa_s))) { 2071#ifdef CONFIG_IEEE80211R 2072 const u8 *ie, *md = NULL; 2073#endif /* CONFIG_IEEE80211R */ 2074 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 2075 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid), 2076 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq); 2077 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 2078 os_memset(wpa_s->bssid, 0, ETH_ALEN); 2079 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 2080 if (bssid_changed) 2081 wpas_notify_bssid_changed(wpa_s); 2082#ifdef CONFIG_IEEE80211R 2083 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 2084 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 2085 md = ie + 2; 2086 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 2087 if (md) { 2088 /* Prepare for the next transition */ 2089 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 2090 } 2091#endif /* CONFIG_IEEE80211R */ 2092#ifdef CONFIG_WPS 2093 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) && 2094 wpa_s->conf->ap_scan == 2 && 2095 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 2096 /* Use ap_scan==1 style network selection to find the network 2097 */ 2098 wpas_connect_work_done(wpa_s); 2099 wpa_s->scan_req = MANUAL_SCAN_REQ; 2100 wpa_s->reassociate = 1; 2101 wpa_supplicant_req_scan(wpa_s, 0, 0); 2102 return; 2103#endif /* CONFIG_WPS */ 2104 } else { 2105 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'", 2106 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 2107 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2108 } 2109 if (!wpa_s->pno) 2110 wpa_supplicant_cancel_sched_scan(wpa_s); 2111 2112 wpa_supplicant_cancel_scan(wpa_s); 2113 2114 /* Starting new association, so clear the possibly used WPA IE from the 2115 * previous association. */ 2116 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 2117 2118#ifdef IEEE8021X_EAPOL 2119 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 2120 if (ssid->leap) { 2121 if (ssid->non_leap == 0) 2122 algs = WPA_AUTH_ALG_LEAP; 2123 else 2124 algs |= WPA_AUTH_ALG_LEAP; 2125 } 2126 } 2127#endif /* IEEE8021X_EAPOL */ 2128 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs); 2129 if (ssid->auth_alg) { 2130 algs = ssid->auth_alg; 2131 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 2132 "0x%x", algs); 2133 } 2134 2135 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 2136 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 2137 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 2138 int try_opportunistic; 2139 try_opportunistic = (ssid->proactive_key_caching < 0 ? 2140 wpa_s->conf->okc : 2141 ssid->proactive_key_caching) && 2142 (ssid->proto & WPA_PROTO_RSN); 2143 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 2144 ssid, try_opportunistic) == 0) 2145 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 2146 wpa_ie_len = sizeof(wpa_ie); 2147 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 2148 wpa_ie, &wpa_ie_len)) { 2149 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 2150 "key management and encryption suites"); 2151 wpas_connect_work_done(wpa_s); 2152 return; 2153 } 2154 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss && 2155 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 2156 /* 2157 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 2158 * use non-WPA since the scan results did not indicate that the 2159 * AP is using WPA or WPA2. 2160 */ 2161 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2162 wpa_ie_len = 0; 2163 wpa_s->wpa_proto = 0; 2164 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 2165 wpa_ie_len = sizeof(wpa_ie); 2166 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 2167 wpa_ie, &wpa_ie_len)) { 2168 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 2169 "key management and encryption suites (no " 2170 "scan results)"); 2171 wpas_connect_work_done(wpa_s); 2172 return; 2173 } 2174#ifdef CONFIG_WPS 2175 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 2176 struct wpabuf *wps_ie; 2177 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 2178 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) { 2179 wpa_ie_len = wpabuf_len(wps_ie); 2180 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len); 2181 } else 2182 wpa_ie_len = 0; 2183 wpabuf_free(wps_ie); 2184 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2185 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY)) 2186 params.wps = WPS_MODE_PRIVACY; 2187 else 2188 params.wps = WPS_MODE_OPEN; 2189 wpa_s->wpa_proto = 0; 2190#endif /* CONFIG_WPS */ 2191 } else { 2192 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2193 wpa_ie_len = 0; 2194 wpa_s->wpa_proto = 0; 2195 } 2196 2197#ifdef CONFIG_P2P 2198 if (wpa_s->global->p2p) { 2199 u8 *pos; 2200 size_t len; 2201 int res; 2202 pos = wpa_ie + wpa_ie_len; 2203 len = sizeof(wpa_ie) - wpa_ie_len; 2204 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 2205 ssid->p2p_group); 2206 if (res >= 0) 2207 wpa_ie_len += res; 2208 } 2209 2210 wpa_s->cross_connect_disallowed = 0; 2211 if (bss) { 2212 struct wpabuf *p2p; 2213 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 2214 if (p2p) { 2215 wpa_s->cross_connect_disallowed = 2216 p2p_get_cross_connect_disallowed(p2p); 2217 wpabuf_free(p2p); 2218 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross " 2219 "connection", 2220 wpa_s->cross_connect_disallowed ? 2221 "disallows" : "allows"); 2222 } 2223 } 2224 2225 os_memset(wpa_s->p2p_ip_addr_info, 0, sizeof(wpa_s->p2p_ip_addr_info)); 2226#endif /* CONFIG_P2P */ 2227 2228#ifdef CONFIG_HS20 2229 if (is_hs20_network(wpa_s, ssid, bss)) { 2230 struct wpabuf *hs20; 2231 hs20 = wpabuf_alloc(20); 2232 if (hs20) { 2233 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); 2234 size_t len; 2235 2236 wpas_hs20_add_indication(hs20, pps_mo_id); 2237 len = sizeof(wpa_ie) - wpa_ie_len; 2238 if (wpabuf_len(hs20) <= len) { 2239 os_memcpy(wpa_ie + wpa_ie_len, 2240 wpabuf_head(hs20), wpabuf_len(hs20)); 2241 wpa_ie_len += wpabuf_len(hs20); 2242 } 2243 wpabuf_free(hs20); 2244 } 2245 } 2246#endif /* CONFIG_HS20 */ 2247 2248 /* 2249 * Workaround: Add Extended Capabilities element only if the AP 2250 * included this element in Beacon/Probe Response frames. Some older 2251 * APs seem to have interoperability issues if this element is 2252 * included, so while the standard may require us to include the 2253 * element in all cases, it is justifiable to skip it to avoid 2254 * interoperability issues. 2255 */ 2256 if (!bss || wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB)) { 2257 u8 ext_capab[18]; 2258 int ext_capab_len; 2259 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, 2260 sizeof(ext_capab)); 2261 if (ext_capab_len > 0) { 2262 u8 *pos = wpa_ie; 2263 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN) 2264 pos += 2 + pos[1]; 2265 os_memmove(pos + ext_capab_len, pos, 2266 wpa_ie_len - (pos - wpa_ie)); 2267 wpa_ie_len += ext_capab_len; 2268 os_memcpy(pos, ext_capab, ext_capab_len); 2269 } 2270 } 2271 2272 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { 2273 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; 2274 size_t len; 2275 2276 len = sizeof(wpa_ie) - wpa_ie_len; 2277 if (wpabuf_len(buf) <= len) { 2278 os_memcpy(wpa_ie + wpa_ie_len, 2279 wpabuf_head(buf), wpabuf_len(buf)); 2280 wpa_ie_len += wpabuf_len(buf); 2281 } 2282 } 2283 2284#ifdef CONFIG_FST 2285 if (wpa_s->fst_ies) { 2286 int fst_ies_len = wpabuf_len(wpa_s->fst_ies); 2287 2288 if (wpa_ie_len + fst_ies_len <= sizeof(wpa_ie)) { 2289 os_memcpy(wpa_ie + wpa_ie_len, 2290 wpabuf_head(wpa_s->fst_ies), fst_ies_len); 2291 wpa_ie_len += fst_ies_len; 2292 } 2293 } 2294#endif /* CONFIG_FST */ 2295 2296 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL); 2297 use_crypt = 1; 2298 cipher_pairwise = wpa_s->pairwise_cipher; 2299 cipher_group = wpa_s->group_cipher; 2300 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2301 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 2302 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) 2303 use_crypt = 0; 2304 if (wpa_set_wep_keys(wpa_s, ssid)) { 2305 use_crypt = 1; 2306 wep_keys_set = 1; 2307 } 2308 } 2309 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) 2310 use_crypt = 0; 2311 2312#ifdef IEEE8021X_EAPOL 2313 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 2314 if ((ssid->eapol_flags & 2315 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 2316 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 && 2317 !wep_keys_set) { 2318 use_crypt = 0; 2319 } else { 2320 /* Assume that dynamic WEP-104 keys will be used and 2321 * set cipher suites in order for drivers to expect 2322 * encryption. */ 2323 cipher_pairwise = cipher_group = WPA_CIPHER_WEP104; 2324 } 2325 } 2326#endif /* IEEE8021X_EAPOL */ 2327 2328 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2329 /* Set the key before (and later after) association */ 2330 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 2331 } 2332 2333 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 2334 if (bss) { 2335 params.ssid = bss->ssid; 2336 params.ssid_len = bss->ssid_len; 2337 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) { 2338 wpa_printf(MSG_DEBUG, "Limit connection to BSSID " 2339 MACSTR " freq=%u MHz based on scan results " 2340 "(bssid_set=%d)", 2341 MAC2STR(bss->bssid), bss->freq, 2342 ssid->bssid_set); 2343 params.bssid = bss->bssid; 2344 params.freq.freq = bss->freq; 2345 } 2346 params.bssid_hint = bss->bssid; 2347 params.freq_hint = bss->freq; 2348 } else { 2349 params.ssid = ssid->ssid; 2350 params.ssid_len = ssid->ssid_len; 2351 } 2352 2353 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set && 2354 wpa_s->conf->ap_scan == 2) { 2355 params.bssid = ssid->bssid; 2356 params.fixed_bssid = 1; 2357 } 2358 2359 /* Initial frequency for IBSS/mesh */ 2360 if ((ssid->mode == WPAS_MODE_IBSS || ssid->mode == WPAS_MODE_MESH) && 2361 ssid->frequency > 0 && params.freq.freq == 0) 2362 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms.freq); 2363 2364 if (ssid->mode == WPAS_MODE_IBSS) { 2365 params.fixed_freq = ssid->fixed_freq; 2366 if (ssid->beacon_int) 2367 params.beacon_int = ssid->beacon_int; 2368 else 2369 params.beacon_int = wpa_s->conf->beacon_int; 2370 } 2371 2372 params.wpa_ie = wpa_ie; 2373 params.wpa_ie_len = wpa_ie_len; 2374 params.pairwise_suite = cipher_pairwise; 2375 params.group_suite = cipher_group; 2376 params.key_mgmt_suite = wpa_s->key_mgmt; 2377 params.wpa_proto = wpa_s->wpa_proto; 2378 params.auth_alg = algs; 2379 params.mode = ssid->mode; 2380 params.bg_scan_period = ssid->bg_scan_period; 2381 for (i = 0; i < NUM_WEP_KEYS; i++) { 2382 if (ssid->wep_key_len[i]) 2383 params.wep_key[i] = ssid->wep_key[i]; 2384 params.wep_key_len[i] = ssid->wep_key_len[i]; 2385 } 2386 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 2387 2388 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2389 (params.key_mgmt_suite == WPA_KEY_MGMT_PSK || 2390 params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) { 2391 params.passphrase = ssid->passphrase; 2392 if (ssid->psk_set) 2393 params.psk = ssid->psk; 2394 } 2395 2396 if (wpa_s->conf->key_mgmt_offload) { 2397 if (params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X || 2398 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 || 2399 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B || 2400 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) 2401 params.req_key_mgmt_offload = 2402 ssid->proactive_key_caching < 0 ? 2403 wpa_s->conf->okc : ssid->proactive_key_caching; 2404 else 2405 params.req_key_mgmt_offload = 1; 2406 2407 if ((params.key_mgmt_suite == WPA_KEY_MGMT_PSK || 2408 params.key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 || 2409 params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK) && 2410 ssid->psk_set) 2411 params.psk = ssid->psk; 2412 } 2413 2414 params.drop_unencrypted = use_crypt; 2415 2416#ifdef CONFIG_IEEE80211W 2417 params.mgmt_frame_protection = wpas_get_ssid_pmf(wpa_s, ssid); 2418 if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) { 2419 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 2420 struct wpa_ie_data ie; 2421 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 && 2422 ie.capabilities & 2423 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 2424 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports " 2425 "MFP: require MFP"); 2426 params.mgmt_frame_protection = 2427 MGMT_FRAME_PROTECTION_REQUIRED; 2428 } 2429 } 2430#endif /* CONFIG_IEEE80211W */ 2431 2432 params.p2p = ssid->p2p_group; 2433 2434 if (wpa_s->parent->set_sta_uapsd) 2435 params.uapsd = wpa_s->parent->sta_uapsd; 2436 else 2437 params.uapsd = -1; 2438 2439#ifdef CONFIG_HT_OVERRIDES 2440 os_memset(&htcaps, 0, sizeof(htcaps)); 2441 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 2442 params.htcaps = (u8 *) &htcaps; 2443 params.htcaps_mask = (u8 *) &htcaps_mask; 2444 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms); 2445#endif /* CONFIG_HT_OVERRIDES */ 2446#ifdef CONFIG_VHT_OVERRIDES 2447 os_memset(&vhtcaps, 0, sizeof(vhtcaps)); 2448 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); 2449 params.vhtcaps = &vhtcaps; 2450 params.vhtcaps_mask = &vhtcaps_mask; 2451 wpa_supplicant_apply_vht_overrides(wpa_s, ssid, ¶ms); 2452#endif /* CONFIG_VHT_OVERRIDES */ 2453 2454#ifdef CONFIG_P2P 2455 /* 2456 * If multi-channel concurrency is not supported, check for any 2457 * frequency conflict. In case of any frequency conflict, remove the 2458 * least prioritized connection. 2459 */ 2460 if (wpa_s->num_multichan_concurrent < 2) { 2461 int freq, num; 2462 num = get_shared_radio_freqs(wpa_s, &freq, 1); 2463 if (num > 0 && freq > 0 && freq != params.freq.freq) { 2464 wpa_printf(MSG_DEBUG, 2465 "Assoc conflicting freq found (%d != %d)", 2466 freq, params.freq.freq); 2467 if (wpas_p2p_handle_frequency_conflicts( 2468 wpa_s, params.freq.freq, ssid) < 0) { 2469 wpas_connect_work_done(wpa_s); 2470 return; 2471 } 2472 } 2473 } 2474#endif /* CONFIG_P2P */ 2475 2476 ret = wpa_drv_associate(wpa_s, ¶ms); 2477 if (ret < 0) { 2478 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver " 2479 "failed"); 2480 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) { 2481 /* 2482 * The driver is known to mean what is saying, so we 2483 * can stop right here; the association will not 2484 * succeed. 2485 */ 2486 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 2487 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2488 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2489 return; 2490 } 2491 /* try to continue anyway; new association will be tried again 2492 * after timeout */ 2493 assoc_failed = 1; 2494 } 2495 2496 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2497 /* Set the key after the association just in case association 2498 * cleared the previously configured key. */ 2499 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 2500 /* No need to timeout authentication since there is no key 2501 * management. */ 2502 wpa_supplicant_cancel_auth_timeout(wpa_s); 2503 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2504#ifdef CONFIG_IBSS_RSN 2505 } else if (ssid->mode == WPAS_MODE_IBSS && 2506 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2507 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 2508 /* 2509 * RSN IBSS authentication is per-STA and we can disable the 2510 * per-BSSID authentication. 2511 */ 2512 wpa_supplicant_cancel_auth_timeout(wpa_s); 2513#endif /* CONFIG_IBSS_RSN */ 2514 } else { 2515 /* Timeout for IEEE 802.11 authentication and association */ 2516 int timeout = 60; 2517 2518 if (assoc_failed) { 2519 /* give IBSS a bit more time */ 2520 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5; 2521 } else if (wpa_s->conf->ap_scan == 1) { 2522 /* give IBSS a bit more time */ 2523 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10; 2524 } 2525 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 2526 } 2527 2528 if (wep_keys_set && 2529 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC)) { 2530 /* Set static WEP keys again */ 2531 wpa_set_wep_keys(wpa_s, ssid); 2532 } 2533 2534 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) { 2535 /* 2536 * Do not allow EAP session resumption between different 2537 * network configurations. 2538 */ 2539 eapol_sm_invalidate_cached_session(wpa_s->eapol); 2540 } 2541 old_ssid = wpa_s->current_ssid; 2542 wpa_s->current_ssid = ssid; 2543 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) 2544 wpa_s->current_bss = bss; 2545 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 2546 wpa_supplicant_initiate_eapol(wpa_s); 2547 if (old_ssid != wpa_s->current_ssid) 2548 wpas_notify_network_changed(wpa_s); 2549} 2550 2551 2552static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s, 2553 const u8 *addr) 2554{ 2555 struct wpa_ssid *old_ssid; 2556 2557 wpas_connect_work_done(wpa_s); 2558 wpa_clear_keys(wpa_s, addr); 2559 old_ssid = wpa_s->current_ssid; 2560 wpa_supplicant_mark_disassoc(wpa_s); 2561 wpa_sm_set_config(wpa_s->wpa, NULL); 2562 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 2563 if (old_ssid != wpa_s->current_ssid) 2564 wpas_notify_network_changed(wpa_s); 2565 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 2566} 2567 2568 2569/** 2570 * wpa_supplicant_deauthenticate - Deauthenticate the current connection 2571 * @wpa_s: Pointer to wpa_supplicant data 2572 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame 2573 * 2574 * This function is used to request %wpa_supplicant to deauthenticate from the 2575 * current AP. 2576 */ 2577void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s, 2578 int reason_code) 2579{ 2580 u8 *addr = NULL; 2581 union wpa_event_data event; 2582 int zero_addr = 0; 2583 2584 wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR 2585 " pending_bssid=" MACSTR " reason=%d state=%s", 2586 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 2587 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state)); 2588 2589 if (!is_zero_ether_addr(wpa_s->bssid)) 2590 addr = wpa_s->bssid; 2591 else if (!is_zero_ether_addr(wpa_s->pending_bssid) && 2592 (wpa_s->wpa_state == WPA_AUTHENTICATING || 2593 wpa_s->wpa_state == WPA_ASSOCIATING)) 2594 addr = wpa_s->pending_bssid; 2595 else if (wpa_s->wpa_state == WPA_ASSOCIATING) { 2596 /* 2597 * When using driver-based BSS selection, we may not know the 2598 * BSSID with which we are currently trying to associate. We 2599 * need to notify the driver of this disconnection even in such 2600 * a case, so use the all zeros address here. 2601 */ 2602 addr = wpa_s->bssid; 2603 zero_addr = 1; 2604 } 2605 2606#ifdef CONFIG_TDLS 2607 wpa_tdls_teardown_peers(wpa_s->wpa); 2608#endif /* CONFIG_TDLS */ 2609 2610#ifdef CONFIG_MESH 2611 if (wpa_s->ifmsh) { 2612 wpa_msg(wpa_s, MSG_INFO, MESH_GROUP_REMOVED "%s", 2613 wpa_s->ifname); 2614 wpa_supplicant_leave_mesh(wpa_s); 2615 } 2616#endif /* CONFIG_MESH */ 2617 2618 if (addr) { 2619 wpa_drv_deauthenticate(wpa_s, addr, reason_code); 2620 os_memset(&event, 0, sizeof(event)); 2621 event.deauth_info.reason_code = (u16) reason_code; 2622 event.deauth_info.locally_generated = 1; 2623 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event); 2624 if (zero_addr) 2625 addr = NULL; 2626 } 2627 2628 wpa_supplicant_clear_connection(wpa_s, addr); 2629} 2630 2631static void wpa_supplicant_enable_one_network(struct wpa_supplicant *wpa_s, 2632 struct wpa_ssid *ssid) 2633{ 2634 if (!ssid || !ssid->disabled || ssid->disabled == 2) 2635 return; 2636 2637 ssid->disabled = 0; 2638 wpas_clear_temp_disabled(wpa_s, ssid, 1); 2639 wpas_notify_network_enabled_changed(wpa_s, ssid); 2640 2641 /* 2642 * Try to reassociate since there is no current configuration and a new 2643 * network was made available. 2644 */ 2645 if (!wpa_s->current_ssid && !wpa_s->disconnected) 2646 wpa_s->reassociate = 1; 2647} 2648 2649 2650/** 2651 * wpa_supplicant_enable_network - Mark a configured network as enabled 2652 * @wpa_s: wpa_supplicant structure for a network interface 2653 * @ssid: wpa_ssid structure for a configured network or %NULL 2654 * 2655 * Enables the specified network or all networks if no network specified. 2656 */ 2657void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s, 2658 struct wpa_ssid *ssid) 2659{ 2660 if (ssid == NULL) { 2661 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 2662 wpa_supplicant_enable_one_network(wpa_s, ssid); 2663 } else 2664 wpa_supplicant_enable_one_network(wpa_s, ssid); 2665 2666 if (wpa_s->reassociate && !wpa_s->disconnected && 2667 (!wpa_s->current_ssid || 2668 wpa_s->wpa_state == WPA_DISCONNECTED || 2669 wpa_s->wpa_state == WPA_SCANNING)) { 2670 if (wpa_s->sched_scanning) { 2671 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan to add " 2672 "new network to scan filters"); 2673 wpa_supplicant_cancel_sched_scan(wpa_s); 2674 } 2675 2676 if (wpa_supplicant_fast_associate(wpa_s) != 1) { 2677 wpa_s->scan_req = NORMAL_SCAN_REQ; 2678 wpa_supplicant_req_scan(wpa_s, 0, 0); 2679 } 2680 } 2681} 2682 2683 2684/** 2685 * wpa_supplicant_disable_network - Mark a configured network as disabled 2686 * @wpa_s: wpa_supplicant structure for a network interface 2687 * @ssid: wpa_ssid structure for a configured network or %NULL 2688 * 2689 * Disables the specified network or all networks if no network specified. 2690 */ 2691void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s, 2692 struct wpa_ssid *ssid) 2693{ 2694 struct wpa_ssid *other_ssid; 2695 int was_disabled; 2696 2697 if (ssid == NULL) { 2698 if (wpa_s->sched_scanning) 2699 wpa_supplicant_cancel_sched_scan(wpa_s); 2700 2701 for (other_ssid = wpa_s->conf->ssid; other_ssid; 2702 other_ssid = other_ssid->next) { 2703 was_disabled = other_ssid->disabled; 2704 if (was_disabled == 2) 2705 continue; /* do not change persistent P2P group 2706 * data */ 2707 2708 other_ssid->disabled = 1; 2709 2710 if (was_disabled != other_ssid->disabled) 2711 wpas_notify_network_enabled_changed( 2712 wpa_s, other_ssid); 2713 } 2714 if (wpa_s->current_ssid) 2715 wpa_supplicant_deauthenticate( 2716 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2717 } else if (ssid->disabled != 2) { 2718 if (ssid == wpa_s->current_ssid) 2719 wpa_supplicant_deauthenticate( 2720 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2721 2722 was_disabled = ssid->disabled; 2723 2724 ssid->disabled = 1; 2725 2726 if (was_disabled != ssid->disabled) { 2727 wpas_notify_network_enabled_changed(wpa_s, ssid); 2728 if (wpa_s->sched_scanning) { 2729 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan " 2730 "to remove network from filters"); 2731 wpa_supplicant_cancel_sched_scan(wpa_s); 2732 wpa_supplicant_req_scan(wpa_s, 0, 0); 2733 } 2734 } 2735 } 2736} 2737 2738 2739/** 2740 * wpa_supplicant_select_network - Attempt association with a network 2741 * @wpa_s: wpa_supplicant structure for a network interface 2742 * @ssid: wpa_ssid structure for a configured network or %NULL for any network 2743 */ 2744void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s, 2745 struct wpa_ssid *ssid) 2746{ 2747 2748 struct wpa_ssid *other_ssid; 2749 int disconnected = 0; 2750 2751 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) { 2752 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2753 wpa_s->own_disconnect_req = 1; 2754 wpa_supplicant_deauthenticate( 2755 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2756 disconnected = 1; 2757 } 2758 2759 if (ssid) 2760 wpas_clear_temp_disabled(wpa_s, ssid, 1); 2761 2762 /* 2763 * Mark all other networks disabled or mark all networks enabled if no 2764 * network specified. 2765 */ 2766 for (other_ssid = wpa_s->conf->ssid; other_ssid; 2767 other_ssid = other_ssid->next) { 2768 int was_disabled = other_ssid->disabled; 2769 if (was_disabled == 2) 2770 continue; /* do not change persistent P2P group data */ 2771 2772 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0; 2773 if (was_disabled && !other_ssid->disabled) 2774 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 2775 2776 if (was_disabled != other_ssid->disabled) 2777 wpas_notify_network_enabled_changed(wpa_s, other_ssid); 2778 } 2779 2780 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid && 2781 wpa_s->wpa_state >= WPA_AUTHENTICATING) { 2782 /* We are already associated with the selected network */ 2783 wpa_printf(MSG_DEBUG, "Already associated with the " 2784 "selected network - do nothing"); 2785 return; 2786 } 2787 2788 if (ssid) { 2789 wpa_s->current_ssid = ssid; 2790 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 2791 wpa_s->connect_without_scan = 2792 (ssid->mode == WPAS_MODE_MESH) ? ssid : NULL; 2793 2794 /* 2795 * Don't optimize next scan freqs since a new ESS has been 2796 * selected. 2797 */ 2798 os_free(wpa_s->next_scan_freqs); 2799 wpa_s->next_scan_freqs = NULL; 2800 } else { 2801 wpa_s->connect_without_scan = NULL; 2802 } 2803 2804 wpa_s->disconnected = 0; 2805 wpa_s->reassociate = 1; 2806 2807 if (wpa_s->connect_without_scan || 2808 wpa_supplicant_fast_associate(wpa_s) != 1) { 2809 wpa_s->scan_req = NORMAL_SCAN_REQ; 2810 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0); 2811 } 2812 2813 if (ssid) 2814 wpas_notify_network_selected(wpa_s, ssid); 2815} 2816 2817 2818/** 2819 * wpas_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path 2820 * @wpa_s: wpa_supplicant structure for a network interface 2821 * @pkcs11_engine_path: PKCS #11 engine path or NULL 2822 * @pkcs11_module_path: PKCS #11 module path or NULL 2823 * Returns: 0 on success; -1 on failure 2824 * 2825 * Sets the PKCS #11 engine and module path. Both have to be NULL or a valid 2826 * path. If resetting the EAPOL state machine with the new PKCS #11 engine and 2827 * module path fails the paths will be reset to the default value (NULL). 2828 */ 2829int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s, 2830 const char *pkcs11_engine_path, 2831 const char *pkcs11_module_path) 2832{ 2833 char *pkcs11_engine_path_copy = NULL; 2834 char *pkcs11_module_path_copy = NULL; 2835 2836 if (pkcs11_engine_path != NULL) { 2837 pkcs11_engine_path_copy = os_strdup(pkcs11_engine_path); 2838 if (pkcs11_engine_path_copy == NULL) 2839 return -1; 2840 } 2841 if (pkcs11_module_path != NULL) { 2842 pkcs11_module_path_copy = os_strdup(pkcs11_module_path); 2843 if (pkcs11_module_path_copy == NULL) { 2844 os_free(pkcs11_engine_path_copy); 2845 return -1; 2846 } 2847 } 2848 2849 os_free(wpa_s->conf->pkcs11_engine_path); 2850 os_free(wpa_s->conf->pkcs11_module_path); 2851 wpa_s->conf->pkcs11_engine_path = pkcs11_engine_path_copy; 2852 wpa_s->conf->pkcs11_module_path = pkcs11_module_path_copy; 2853 2854 wpa_sm_set_eapol(wpa_s->wpa, NULL); 2855 eapol_sm_deinit(wpa_s->eapol); 2856 wpa_s->eapol = NULL; 2857 if (wpa_supplicant_init_eapol(wpa_s)) { 2858 /* Error -> Reset paths to the default value (NULL) once. */ 2859 if (pkcs11_engine_path != NULL && pkcs11_module_path != NULL) 2860 wpas_set_pkcs11_engine_and_module_path(wpa_s, NULL, 2861 NULL); 2862 2863 return -1; 2864 } 2865 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 2866 2867 return 0; 2868} 2869 2870 2871/** 2872 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface 2873 * @wpa_s: wpa_supplicant structure for a network interface 2874 * @ap_scan: AP scan mode 2875 * Returns: 0 if succeed or -1 if ap_scan has an invalid value 2876 * 2877 */ 2878int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan) 2879{ 2880 2881 int old_ap_scan; 2882 2883 if (ap_scan < 0 || ap_scan > 2) 2884 return -1; 2885 2886 if (ap_scan == 2 && os_strcmp(wpa_s->driver->name, "nl80211") == 0) { 2887 wpa_printf(MSG_INFO, 2888 "Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures"); 2889 } 2890 2891#ifdef ANDROID 2892 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan && 2893 wpa_s->wpa_state >= WPA_ASSOCIATING && 2894 wpa_s->wpa_state < WPA_COMPLETED) { 2895 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while " 2896 "associating", wpa_s->conf->ap_scan, ap_scan); 2897 return 0; 2898 } 2899#endif /* ANDROID */ 2900 2901 old_ap_scan = wpa_s->conf->ap_scan; 2902 wpa_s->conf->ap_scan = ap_scan; 2903 2904 if (old_ap_scan != wpa_s->conf->ap_scan) 2905 wpas_notify_ap_scan_changed(wpa_s); 2906 2907 return 0; 2908} 2909 2910 2911/** 2912 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age 2913 * @wpa_s: wpa_supplicant structure for a network interface 2914 * @expire_age: Expiration age in seconds 2915 * Returns: 0 if succeed or -1 if expire_age has an invalid value 2916 * 2917 */ 2918int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s, 2919 unsigned int bss_expire_age) 2920{ 2921 if (bss_expire_age < 10) { 2922 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u", 2923 bss_expire_age); 2924 return -1; 2925 } 2926 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec", 2927 bss_expire_age); 2928 wpa_s->conf->bss_expiration_age = bss_expire_age; 2929 2930 return 0; 2931} 2932 2933 2934/** 2935 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count 2936 * @wpa_s: wpa_supplicant structure for a network interface 2937 * @expire_count: number of scans after which an unseen BSS is reclaimed 2938 * Returns: 0 if succeed or -1 if expire_count has an invalid value 2939 * 2940 */ 2941int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s, 2942 unsigned int bss_expire_count) 2943{ 2944 if (bss_expire_count < 1) { 2945 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u", 2946 bss_expire_count); 2947 return -1; 2948 } 2949 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u", 2950 bss_expire_count); 2951 wpa_s->conf->bss_expiration_scan_count = bss_expire_count; 2952 2953 return 0; 2954} 2955 2956 2957/** 2958 * wpa_supplicant_set_scan_interval - Set scan interval 2959 * @wpa_s: wpa_supplicant structure for a network interface 2960 * @scan_interval: scan interval in seconds 2961 * Returns: 0 if succeed or -1 if scan_interval has an invalid value 2962 * 2963 */ 2964int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s, 2965 int scan_interval) 2966{ 2967 if (scan_interval < 0) { 2968 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d", 2969 scan_interval); 2970 return -1; 2971 } 2972 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec", 2973 scan_interval); 2974 wpa_supplicant_update_scan_int(wpa_s, scan_interval); 2975 2976 return 0; 2977} 2978 2979 2980/** 2981 * wpa_supplicant_set_debug_params - Set global debug params 2982 * @global: wpa_global structure 2983 * @debug_level: debug level 2984 * @debug_timestamp: determines if show timestamp in debug data 2985 * @debug_show_keys: determines if show keys in debug data 2986 * Returns: 0 if succeed or -1 if debug_level has wrong value 2987 */ 2988int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level, 2989 int debug_timestamp, int debug_show_keys) 2990{ 2991 2992 int old_level, old_timestamp, old_show_keys; 2993 2994 /* check for allowed debuglevels */ 2995 if (debug_level != MSG_EXCESSIVE && 2996 debug_level != MSG_MSGDUMP && 2997 debug_level != MSG_DEBUG && 2998 debug_level != MSG_INFO && 2999 debug_level != MSG_WARNING && 3000 debug_level != MSG_ERROR) 3001 return -1; 3002 3003 old_level = wpa_debug_level; 3004 old_timestamp = wpa_debug_timestamp; 3005 old_show_keys = wpa_debug_show_keys; 3006 3007 wpa_debug_level = debug_level; 3008 wpa_debug_timestamp = debug_timestamp ? 1 : 0; 3009 wpa_debug_show_keys = debug_show_keys ? 1 : 0; 3010 3011 if (wpa_debug_level != old_level) 3012 wpas_notify_debug_level_changed(global); 3013 if (wpa_debug_timestamp != old_timestamp) 3014 wpas_notify_debug_timestamp_changed(global); 3015 if (wpa_debug_show_keys != old_show_keys) 3016 wpas_notify_debug_show_keys_changed(global); 3017 3018 return 0; 3019} 3020 3021 3022/** 3023 * wpa_supplicant_get_ssid - Get a pointer to the current network structure 3024 * @wpa_s: Pointer to wpa_supplicant data 3025 * Returns: A pointer to the current network structure or %NULL on failure 3026 */ 3027struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s) 3028{ 3029 struct wpa_ssid *entry; 3030 u8 ssid[SSID_MAX_LEN]; 3031 int res; 3032 size_t ssid_len; 3033 u8 bssid[ETH_ALEN]; 3034 int wired; 3035 3036 res = wpa_drv_get_ssid(wpa_s, ssid); 3037 if (res < 0) { 3038 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from " 3039 "driver"); 3040 return NULL; 3041 } 3042 ssid_len = res; 3043 3044 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 3045 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from " 3046 "driver"); 3047 return NULL; 3048 } 3049 3050 wired = wpa_s->conf->ap_scan == 0 && 3051 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED); 3052 3053 entry = wpa_s->conf->ssid; 3054 while (entry) { 3055 if (!wpas_network_disabled(wpa_s, entry) && 3056 ((ssid_len == entry->ssid_len && 3057 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) && 3058 (!entry->bssid_set || 3059 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 3060 return entry; 3061#ifdef CONFIG_WPS 3062 if (!wpas_network_disabled(wpa_s, entry) && 3063 (entry->key_mgmt & WPA_KEY_MGMT_WPS) && 3064 (entry->ssid == NULL || entry->ssid_len == 0) && 3065 (!entry->bssid_set || 3066 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 3067 return entry; 3068#endif /* CONFIG_WPS */ 3069 3070 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set && 3071 entry->ssid_len == 0 && 3072 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0) 3073 return entry; 3074 3075 entry = entry->next; 3076 } 3077 3078 return NULL; 3079} 3080 3081 3082static int select_driver(struct wpa_supplicant *wpa_s, int i) 3083{ 3084 struct wpa_global *global = wpa_s->global; 3085 3086 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) { 3087 global->drv_priv[i] = wpa_drivers[i]->global_init(); 3088 if (global->drv_priv[i] == NULL) { 3089 wpa_printf(MSG_ERROR, "Failed to initialize driver " 3090 "'%s'", wpa_drivers[i]->name); 3091 return -1; 3092 } 3093 } 3094 3095 wpa_s->driver = wpa_drivers[i]; 3096 wpa_s->global_drv_priv = global->drv_priv[i]; 3097 3098 return 0; 3099} 3100 3101 3102static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s, 3103 const char *name) 3104{ 3105 int i; 3106 size_t len; 3107 const char *pos, *driver = name; 3108 3109 if (wpa_s == NULL) 3110 return -1; 3111 3112 if (wpa_drivers[0] == NULL) { 3113 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into " 3114 "wpa_supplicant"); 3115 return -1; 3116 } 3117 3118 if (name == NULL) { 3119 /* default to first driver in the list */ 3120 return select_driver(wpa_s, 0); 3121 } 3122 3123 do { 3124 pos = os_strchr(driver, ','); 3125 if (pos) 3126 len = pos - driver; 3127 else 3128 len = os_strlen(driver); 3129 3130 for (i = 0; wpa_drivers[i]; i++) { 3131 if (os_strlen(wpa_drivers[i]->name) == len && 3132 os_strncmp(driver, wpa_drivers[i]->name, len) == 3133 0) { 3134 /* First driver that succeeds wins */ 3135 if (select_driver(wpa_s, i) == 0) 3136 return 0; 3137 } 3138 } 3139 3140 driver = pos + 1; 3141 } while (pos); 3142 3143 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name); 3144 return -1; 3145} 3146 3147 3148/** 3149 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant 3150 * @ctx: Context pointer (wpa_s); this is the ctx variable registered 3151 * with struct wpa_driver_ops::init() 3152 * @src_addr: Source address of the EAPOL frame 3153 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header) 3154 * @len: Length of the EAPOL data 3155 * 3156 * This function is called for each received EAPOL frame. Most driver 3157 * interfaces rely on more generic OS mechanism for receiving frames through 3158 * l2_packet, but if such a mechanism is not available, the driver wrapper may 3159 * take care of received EAPOL frames and deliver them to the core supplicant 3160 * code by calling this function. 3161 */ 3162void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr, 3163 const u8 *buf, size_t len) 3164{ 3165 struct wpa_supplicant *wpa_s = ctx; 3166 3167 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr)); 3168 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len); 3169 3170#ifdef CONFIG_PEERKEY 3171 if (wpa_s->wpa_state > WPA_ASSOCIATED && wpa_s->current_ssid && 3172 wpa_s->current_ssid->peerkey && 3173 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 3174 wpa_sm_rx_eapol_peerkey(wpa_s->wpa, src_addr, buf, len) == 1) { 3175 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: Processed PeerKey EAPOL-Key"); 3176 return; 3177 } 3178#endif /* CONFIG_PEERKEY */ 3179 3180 if (wpa_s->wpa_state < WPA_ASSOCIATED || 3181 (wpa_s->last_eapol_matches_bssid && 3182#ifdef CONFIG_AP 3183 !wpa_s->ap_iface && 3184#endif /* CONFIG_AP */ 3185 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) != 0)) { 3186 /* 3187 * There is possible race condition between receiving the 3188 * association event and the EAPOL frame since they are coming 3189 * through different paths from the driver. In order to avoid 3190 * issues in trying to process the EAPOL frame before receiving 3191 * association information, lets queue it for processing until 3192 * the association event is received. This may also be needed in 3193 * driver-based roaming case, so also use src_addr != BSSID as a 3194 * trigger if we have previously confirmed that the 3195 * Authenticator uses BSSID as the src_addr (which is not the 3196 * case with wired IEEE 802.1X). 3197 */ 3198 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing " 3199 "of received EAPOL frame (state=%s bssid=" MACSTR ")", 3200 wpa_supplicant_state_txt(wpa_s->wpa_state), 3201 MAC2STR(wpa_s->bssid)); 3202 wpabuf_free(wpa_s->pending_eapol_rx); 3203 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len); 3204 if (wpa_s->pending_eapol_rx) { 3205 os_get_reltime(&wpa_s->pending_eapol_rx_time); 3206 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr, 3207 ETH_ALEN); 3208 } 3209 return; 3210 } 3211 3212 wpa_s->last_eapol_matches_bssid = 3213 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) == 0; 3214 3215#ifdef CONFIG_AP 3216 if (wpa_s->ap_iface) { 3217 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len); 3218 return; 3219 } 3220#endif /* CONFIG_AP */ 3221 3222 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 3223 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since " 3224 "no key management is configured"); 3225 return; 3226 } 3227 3228 if (wpa_s->eapol_received == 0 && 3229 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) || 3230 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 3231 wpa_s->wpa_state != WPA_COMPLETED) && 3232 (wpa_s->current_ssid == NULL || 3233 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) { 3234 /* Timeout for completing IEEE 802.1X and WPA authentication */ 3235 int timeout = 10; 3236 3237 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 3238 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA || 3239 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) { 3240 /* Use longer timeout for IEEE 802.1X/EAP */ 3241 timeout = 70; 3242 } 3243 3244#ifdef CONFIG_WPS 3245 if (wpa_s->current_ssid && wpa_s->current_bss && 3246 (wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS) && 3247 eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { 3248 /* 3249 * Use shorter timeout if going through WPS AP iteration 3250 * for PIN config method with an AP that does not 3251 * advertise Selected Registrar. 3252 */ 3253 struct wpabuf *wps_ie; 3254 3255 wps_ie = wpa_bss_get_vendor_ie_multi( 3256 wpa_s->current_bss, WPS_IE_VENDOR_TYPE); 3257 if (wps_ie && 3258 !wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) 3259 timeout = 10; 3260 wpabuf_free(wps_ie); 3261 } 3262#endif /* CONFIG_WPS */ 3263 3264 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 3265 } 3266 wpa_s->eapol_received++; 3267 3268 if (wpa_s->countermeasures) { 3269 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped " 3270 "EAPOL packet"); 3271 return; 3272 } 3273 3274#ifdef CONFIG_IBSS_RSN 3275 if (wpa_s->current_ssid && 3276 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) { 3277 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len); 3278 return; 3279 } 3280#endif /* CONFIG_IBSS_RSN */ 3281 3282 /* Source address of the incoming EAPOL frame could be compared to the 3283 * current BSSID. However, it is possible that a centralized 3284 * Authenticator could be using another MAC address than the BSSID of 3285 * an AP, so just allow any address to be used for now. The replies are 3286 * still sent to the current BSSID (if available), though. */ 3287 3288 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN); 3289 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) && 3290 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0) 3291 return; 3292 wpa_drv_poll(wpa_s); 3293 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 3294 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len); 3295 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 3296 /* 3297 * Set portValid = TRUE here since we are going to skip 4-way 3298 * handshake processing which would normally set portValid. We 3299 * need this to allow the EAPOL state machines to be completed 3300 * without going through EAPOL-Key handshake. 3301 */ 3302 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3303 } 3304} 3305 3306 3307int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s) 3308{ 3309 if ((!wpa_s->p2p_mgmt || 3310 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) && 3311 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) { 3312 l2_packet_deinit(wpa_s->l2); 3313 wpa_s->l2 = l2_packet_init(wpa_s->ifname, 3314 wpa_drv_get_mac_addr(wpa_s), 3315 ETH_P_EAPOL, 3316 wpa_supplicant_rx_eapol, wpa_s, 0); 3317 if (wpa_s->l2 == NULL) 3318 return -1; 3319 } else { 3320 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 3321 if (addr) 3322 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 3323 } 3324 3325 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) { 3326 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address"); 3327 return -1; 3328 } 3329 3330 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 3331 3332 return 0; 3333} 3334 3335 3336static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr, 3337 const u8 *buf, size_t len) 3338{ 3339 struct wpa_supplicant *wpa_s = ctx; 3340 const struct l2_ethhdr *eth; 3341 3342 if (len < sizeof(*eth)) 3343 return; 3344 eth = (const struct l2_ethhdr *) buf; 3345 3346 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 && 3347 !(eth->h_dest[0] & 0x01)) { 3348 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 3349 " (bridge - not for this interface - ignore)", 3350 MAC2STR(src_addr), MAC2STR(eth->h_dest)); 3351 return; 3352 } 3353 3354 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 3355 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest)); 3356 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth), 3357 len - sizeof(*eth)); 3358} 3359 3360 3361/** 3362 * wpa_supplicant_driver_init - Initialize driver interface parameters 3363 * @wpa_s: Pointer to wpa_supplicant data 3364 * Returns: 0 on success, -1 on failure 3365 * 3366 * This function is called to initialize driver interface parameters. 3367 * wpa_drv_init() must have been called before this function to initialize the 3368 * driver interface. 3369 */ 3370int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s) 3371{ 3372 static int interface_count = 0; 3373 3374 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) 3375 return -1; 3376 3377 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR, 3378 MAC2STR(wpa_s->own_addr)); 3379 os_memcpy(wpa_s->perm_addr, wpa_s->own_addr, ETH_ALEN); 3380 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 3381 3382 if (wpa_s->bridge_ifname[0]) { 3383 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge " 3384 "interface '%s'", wpa_s->bridge_ifname); 3385 wpa_s->l2_br = l2_packet_init_bridge( 3386 wpa_s->bridge_ifname, wpa_s->ifname, wpa_s->own_addr, 3387 ETH_P_EAPOL, wpa_supplicant_rx_eapol_bridge, wpa_s, 1); 3388 if (wpa_s->l2_br == NULL) { 3389 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet " 3390 "connection for the bridge interface '%s'", 3391 wpa_s->bridge_ifname); 3392 return -1; 3393 } 3394 } 3395 3396 if (wpa_s->conf->ap_scan == 2 && 3397 os_strcmp(wpa_s->driver->name, "nl80211") == 0) { 3398 wpa_printf(MSG_INFO, 3399 "Note: nl80211 driver interface is not designed to be used with ap_scan=2; this can result in connection failures"); 3400 } 3401 3402 wpa_clear_keys(wpa_s, NULL); 3403 3404 /* Make sure that TKIP countermeasures are not left enabled (could 3405 * happen if wpa_supplicant is killed during countermeasures. */ 3406 wpa_drv_set_countermeasures(wpa_s, 0); 3407 3408 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver"); 3409 wpa_drv_flush_pmkid(wpa_s); 3410 3411 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; 3412 wpa_s->prev_scan_wildcard = 0; 3413 3414 if (wpa_supplicant_enabled_networks(wpa_s)) { 3415 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3416 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3417 interface_count = 0; 3418 } 3419#ifndef ANDROID 3420 if (!wpa_s->p2p_mgmt && 3421 wpa_supplicant_delayed_sched_scan(wpa_s, 3422 interface_count % 3, 3423 100000)) 3424 wpa_supplicant_req_scan(wpa_s, interface_count % 3, 3425 100000); 3426#endif /* ANDROID */ 3427 interface_count++; 3428 } else 3429 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 3430 3431 return 0; 3432} 3433 3434 3435static int wpa_supplicant_daemon(const char *pid_file) 3436{ 3437 wpa_printf(MSG_DEBUG, "Daemonize.."); 3438 return os_daemonize(pid_file); 3439} 3440 3441 3442static struct wpa_supplicant * 3443wpa_supplicant_alloc(struct wpa_supplicant *parent) 3444{ 3445 struct wpa_supplicant *wpa_s; 3446 3447 wpa_s = os_zalloc(sizeof(*wpa_s)); 3448 if (wpa_s == NULL) 3449 return NULL; 3450 wpa_s->scan_req = INITIAL_SCAN_REQ; 3451 wpa_s->scan_interval = 5; 3452 wpa_s->new_connection = 1; 3453 wpa_s->parent = parent ? parent : wpa_s; 3454 wpa_s->sched_scanning = 0; 3455 3456 return wpa_s; 3457} 3458 3459 3460#ifdef CONFIG_HT_OVERRIDES 3461 3462static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s, 3463 struct ieee80211_ht_capabilities *htcaps, 3464 struct ieee80211_ht_capabilities *htcaps_mask, 3465 const char *ht_mcs) 3466{ 3467 /* parse ht_mcs into hex array */ 3468 int i; 3469 const char *tmp = ht_mcs; 3470 char *end = NULL; 3471 3472 /* If ht_mcs is null, do not set anything */ 3473 if (!ht_mcs) 3474 return 0; 3475 3476 /* This is what we are setting in the kernel */ 3477 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN); 3478 3479 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs); 3480 3481 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3482 errno = 0; 3483 long v = strtol(tmp, &end, 16); 3484 if (errno == 0) { 3485 wpa_msg(wpa_s, MSG_DEBUG, 3486 "htcap value[%i]: %ld end: %p tmp: %p", 3487 i, v, end, tmp); 3488 if (end == tmp) 3489 break; 3490 3491 htcaps->supported_mcs_set[i] = v; 3492 tmp = end; 3493 } else { 3494 wpa_msg(wpa_s, MSG_ERROR, 3495 "Failed to parse ht-mcs: %s, error: %s\n", 3496 ht_mcs, strerror(errno)); 3497 return -1; 3498 } 3499 } 3500 3501 /* 3502 * If we were able to parse any values, then set mask for the MCS set. 3503 */ 3504 if (i) { 3505 os_memset(&htcaps_mask->supported_mcs_set, 0xff, 3506 IEEE80211_HT_MCS_MASK_LEN - 1); 3507 /* skip the 3 reserved bits */ 3508 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] = 3509 0x1f; 3510 } 3511 3512 return 0; 3513} 3514 3515 3516static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s, 3517 struct ieee80211_ht_capabilities *htcaps, 3518 struct ieee80211_ht_capabilities *htcaps_mask, 3519 int disabled) 3520{ 3521 le16 msk; 3522 3523 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled); 3524 3525 if (disabled == -1) 3526 return 0; 3527 3528 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE); 3529 htcaps_mask->ht_capabilities_info |= msk; 3530 if (disabled) 3531 htcaps->ht_capabilities_info &= msk; 3532 else 3533 htcaps->ht_capabilities_info |= msk; 3534 3535 return 0; 3536} 3537 3538 3539static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s, 3540 struct ieee80211_ht_capabilities *htcaps, 3541 struct ieee80211_ht_capabilities *htcaps_mask, 3542 int factor) 3543{ 3544 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor); 3545 3546 if (factor == -1) 3547 return 0; 3548 3549 if (factor < 0 || factor > 3) { 3550 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. " 3551 "Must be 0-3 or -1", factor); 3552 return -EINVAL; 3553 } 3554 3555 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */ 3556 htcaps->a_mpdu_params &= ~0x3; 3557 htcaps->a_mpdu_params |= factor & 0x3; 3558 3559 return 0; 3560} 3561 3562 3563static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s, 3564 struct ieee80211_ht_capabilities *htcaps, 3565 struct ieee80211_ht_capabilities *htcaps_mask, 3566 int density) 3567{ 3568 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density); 3569 3570 if (density == -1) 3571 return 0; 3572 3573 if (density < 0 || density > 7) { 3574 wpa_msg(wpa_s, MSG_ERROR, 3575 "ampdu_density: %d out of range. Must be 0-7 or -1.", 3576 density); 3577 return -EINVAL; 3578 } 3579 3580 htcaps_mask->a_mpdu_params |= 0x1C; 3581 htcaps->a_mpdu_params &= ~(0x1C); 3582 htcaps->a_mpdu_params |= (density << 2) & 0x1C; 3583 3584 return 0; 3585} 3586 3587 3588static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s, 3589 struct ieee80211_ht_capabilities *htcaps, 3590 struct ieee80211_ht_capabilities *htcaps_mask, 3591 int disabled) 3592{ 3593 /* Masking these out disables HT40 */ 3594 le16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET | 3595 HT_CAP_INFO_SHORT_GI40MHZ); 3596 3597 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled); 3598 3599 if (disabled) 3600 htcaps->ht_capabilities_info &= ~msk; 3601 else 3602 htcaps->ht_capabilities_info |= msk; 3603 3604 htcaps_mask->ht_capabilities_info |= msk; 3605 3606 return 0; 3607} 3608 3609 3610static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s, 3611 struct ieee80211_ht_capabilities *htcaps, 3612 struct ieee80211_ht_capabilities *htcaps_mask, 3613 int disabled) 3614{ 3615 /* Masking these out disables SGI */ 3616 le16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ | 3617 HT_CAP_INFO_SHORT_GI40MHZ); 3618 3619 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled); 3620 3621 if (disabled) 3622 htcaps->ht_capabilities_info &= ~msk; 3623 else 3624 htcaps->ht_capabilities_info |= msk; 3625 3626 htcaps_mask->ht_capabilities_info |= msk; 3627 3628 return 0; 3629} 3630 3631 3632static int wpa_set_disable_ldpc(struct wpa_supplicant *wpa_s, 3633 struct ieee80211_ht_capabilities *htcaps, 3634 struct ieee80211_ht_capabilities *htcaps_mask, 3635 int disabled) 3636{ 3637 /* Masking these out disables LDPC */ 3638 le16 msk = host_to_le16(HT_CAP_INFO_LDPC_CODING_CAP); 3639 3640 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ldpc: %d", disabled); 3641 3642 if (disabled) 3643 htcaps->ht_capabilities_info &= ~msk; 3644 else 3645 htcaps->ht_capabilities_info |= msk; 3646 3647 htcaps_mask->ht_capabilities_info |= msk; 3648 3649 return 0; 3650} 3651 3652 3653void wpa_supplicant_apply_ht_overrides( 3654 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 3655 struct wpa_driver_associate_params *params) 3656{ 3657 struct ieee80211_ht_capabilities *htcaps; 3658 struct ieee80211_ht_capabilities *htcaps_mask; 3659 3660 if (!ssid) 3661 return; 3662 3663 params->disable_ht = ssid->disable_ht; 3664 if (!params->htcaps || !params->htcaps_mask) 3665 return; 3666 3667 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps; 3668 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask; 3669 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs); 3670 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask, 3671 ssid->disable_max_amsdu); 3672 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor); 3673 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density); 3674 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40); 3675 wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi); 3676 wpa_set_disable_ldpc(wpa_s, htcaps, htcaps_mask, ssid->disable_ldpc); 3677 3678 if (ssid->ht40_intolerant) { 3679 le16 bit = host_to_le16(HT_CAP_INFO_40MHZ_INTOLERANT); 3680 htcaps->ht_capabilities_info |= bit; 3681 htcaps_mask->ht_capabilities_info |= bit; 3682 } 3683} 3684 3685#endif /* CONFIG_HT_OVERRIDES */ 3686 3687 3688#ifdef CONFIG_VHT_OVERRIDES 3689void wpa_supplicant_apply_vht_overrides( 3690 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 3691 struct wpa_driver_associate_params *params) 3692{ 3693 struct ieee80211_vht_capabilities *vhtcaps; 3694 struct ieee80211_vht_capabilities *vhtcaps_mask; 3695 3696 if (!ssid) 3697 return; 3698 3699 params->disable_vht = ssid->disable_vht; 3700 3701 vhtcaps = (void *) params->vhtcaps; 3702 vhtcaps_mask = (void *) params->vhtcaps_mask; 3703 3704 if (!vhtcaps || !vhtcaps_mask) 3705 return; 3706 3707 vhtcaps->vht_capabilities_info = ssid->vht_capa; 3708 vhtcaps_mask->vht_capabilities_info = ssid->vht_capa_mask; 3709 3710#ifdef CONFIG_HT_OVERRIDES 3711 /* if max ampdu is <= 3, we have to make the HT cap the same */ 3712 if (ssid->vht_capa_mask & VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) { 3713 int max_ampdu; 3714 3715 max_ampdu = (ssid->vht_capa & 3716 VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) >> 3717 VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX_SHIFT; 3718 3719 max_ampdu = max_ampdu < 3 ? max_ampdu : 3; 3720 wpa_set_ampdu_factor(wpa_s, 3721 (void *) params->htcaps, 3722 (void *) params->htcaps_mask, 3723 max_ampdu); 3724 } 3725#endif /* CONFIG_HT_OVERRIDES */ 3726 3727#define OVERRIDE_MCS(i) \ 3728 if (ssid->vht_tx_mcs_nss_ ##i >= 0) { \ 3729 vhtcaps_mask->vht_supported_mcs_set.tx_map |= \ 3730 3 << 2 * (i - 1); \ 3731 vhtcaps->vht_supported_mcs_set.tx_map |= \ 3732 ssid->vht_tx_mcs_nss_ ##i << 2 * (i - 1); \ 3733 } \ 3734 if (ssid->vht_rx_mcs_nss_ ##i >= 0) { \ 3735 vhtcaps_mask->vht_supported_mcs_set.rx_map |= \ 3736 3 << 2 * (i - 1); \ 3737 vhtcaps->vht_supported_mcs_set.rx_map |= \ 3738 ssid->vht_rx_mcs_nss_ ##i << 2 * (i - 1); \ 3739 } 3740 3741 OVERRIDE_MCS(1); 3742 OVERRIDE_MCS(2); 3743 OVERRIDE_MCS(3); 3744 OVERRIDE_MCS(4); 3745 OVERRIDE_MCS(5); 3746 OVERRIDE_MCS(6); 3747 OVERRIDE_MCS(7); 3748 OVERRIDE_MCS(8); 3749} 3750#endif /* CONFIG_VHT_OVERRIDES */ 3751 3752 3753static int pcsc_reader_init(struct wpa_supplicant *wpa_s) 3754{ 3755#ifdef PCSC_FUNCS 3756 size_t len; 3757 3758 if (!wpa_s->conf->pcsc_reader) 3759 return 0; 3760 3761 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 3762 if (!wpa_s->scard) 3763 return 1; 3764 3765 if (wpa_s->conf->pcsc_pin && 3766 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) { 3767 scard_deinit(wpa_s->scard); 3768 wpa_s->scard = NULL; 3769 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed"); 3770 return -1; 3771 } 3772 3773 len = sizeof(wpa_s->imsi) - 1; 3774 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 3775 scard_deinit(wpa_s->scard); 3776 wpa_s->scard = NULL; 3777 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 3778 return -1; 3779 } 3780 wpa_s->imsi[len] = '\0'; 3781 3782 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 3783 3784 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 3785 wpa_s->imsi, wpa_s->mnc_len); 3786 3787 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 3788 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 3789#endif /* PCSC_FUNCS */ 3790 3791 return 0; 3792} 3793 3794 3795int wpas_init_ext_pw(struct wpa_supplicant *wpa_s) 3796{ 3797 char *val, *pos; 3798 3799 ext_password_deinit(wpa_s->ext_pw); 3800 wpa_s->ext_pw = NULL; 3801 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL); 3802 3803 if (!wpa_s->conf->ext_password_backend) 3804 return 0; 3805 3806 val = os_strdup(wpa_s->conf->ext_password_backend); 3807 if (val == NULL) 3808 return -1; 3809 pos = os_strchr(val, ':'); 3810 if (pos) 3811 *pos++ = '\0'; 3812 3813 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val); 3814 3815 wpa_s->ext_pw = ext_password_init(val, pos); 3816 os_free(val); 3817 if (wpa_s->ext_pw == NULL) { 3818 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend"); 3819 return -1; 3820 } 3821 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw); 3822 3823 return 0; 3824} 3825 3826 3827#ifdef CONFIG_FST 3828 3829static const u8 * wpas_fst_get_bssid_cb(void *ctx) 3830{ 3831 struct wpa_supplicant *wpa_s = ctx; 3832 3833 return (is_zero_ether_addr(wpa_s->bssid) || 3834 wpa_s->wpa_state != WPA_COMPLETED) ? NULL : wpa_s->bssid; 3835} 3836 3837 3838static void wpas_fst_get_channel_info_cb(void *ctx, 3839 enum hostapd_hw_mode *hw_mode, 3840 u8 *channel) 3841{ 3842 struct wpa_supplicant *wpa_s = ctx; 3843 3844 if (wpa_s->current_bss) { 3845 *hw_mode = ieee80211_freq_to_chan(wpa_s->current_bss->freq, 3846 channel); 3847 } else if (wpa_s->hw.num_modes) { 3848 *hw_mode = wpa_s->hw.modes[0].mode; 3849 } else { 3850 WPA_ASSERT(0); 3851 *hw_mode = 0; 3852 } 3853} 3854 3855 3856static int wpas_fst_get_hw_modes(void *ctx, struct hostapd_hw_modes **modes) 3857{ 3858 struct wpa_supplicant *wpa_s = ctx; 3859 3860 *modes = wpa_s->hw.modes; 3861 return wpa_s->hw.num_modes; 3862} 3863 3864 3865static void wpas_fst_set_ies_cb(void *ctx, const struct wpabuf *fst_ies) 3866{ 3867 struct wpa_supplicant *wpa_s = ctx; 3868 3869 wpa_hexdump_buf(MSG_DEBUG, "FST: Set IEs", fst_ies); 3870 wpa_s->fst_ies = fst_ies; 3871} 3872 3873 3874static int wpas_fst_send_action_cb(void *ctx, const u8 *da, struct wpabuf *data) 3875{ 3876 struct wpa_supplicant *wpa_s = ctx; 3877 3878 WPA_ASSERT(os_memcmp(wpa_s->bssid, da, ETH_ALEN) == 0); 3879 return wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 3880 wpa_s->own_addr, wpa_s->bssid, 3881 wpabuf_head(data), wpabuf_len(data), 3882 0); 3883} 3884 3885 3886static const struct wpabuf * wpas_fst_get_mb_ie_cb(void *ctx, const u8 *addr) 3887{ 3888 struct wpa_supplicant *wpa_s = ctx; 3889 3890 WPA_ASSERT(os_memcmp(wpa_s->bssid, addr, ETH_ALEN) == 0); 3891 return wpa_s->received_mb_ies; 3892} 3893 3894 3895static void wpas_fst_update_mb_ie_cb(void *ctx, const u8 *addr, 3896 const u8 *buf, size_t size) 3897{ 3898 struct wpa_supplicant *wpa_s = ctx; 3899 struct mb_ies_info info; 3900 3901 WPA_ASSERT(os_memcmp(wpa_s->bssid, addr, ETH_ALEN) == 0); 3902 3903 if (!mb_ies_info_by_ies(&info, buf, size)) { 3904 wpabuf_free(wpa_s->received_mb_ies); 3905 wpa_s->received_mb_ies = mb_ies_by_info(&info); 3906 } 3907} 3908 3909 3910const u8 * wpas_fst_get_peer_first(void *ctx, struct fst_get_peer_ctx **get_ctx, 3911 Boolean mb_only) 3912{ 3913 struct wpa_supplicant *wpa_s = ctx; 3914 3915 *get_ctx = NULL; 3916 if (!is_zero_ether_addr(wpa_s->bssid)) 3917 return (wpa_s->received_mb_ies || !mb_only) ? 3918 wpa_s->bssid : NULL; 3919 return NULL; 3920} 3921 3922 3923const u8 * wpas_fst_get_peer_next(void *ctx, struct fst_get_peer_ctx **get_ctx, 3924 Boolean mb_only) 3925{ 3926 return NULL; 3927} 3928 3929void fst_wpa_supplicant_fill_iface_obj(struct wpa_supplicant *wpa_s, 3930 struct fst_wpa_obj *iface_obj) 3931{ 3932 iface_obj->ctx = wpa_s; 3933 iface_obj->get_bssid = wpas_fst_get_bssid_cb; 3934 iface_obj->get_channel_info = wpas_fst_get_channel_info_cb; 3935 iface_obj->get_hw_modes = wpas_fst_get_hw_modes; 3936 iface_obj->set_ies = wpas_fst_set_ies_cb; 3937 iface_obj->send_action = wpas_fst_send_action_cb; 3938 iface_obj->get_mb_ie = wpas_fst_get_mb_ie_cb; 3939 iface_obj->update_mb_ie = wpas_fst_update_mb_ie_cb; 3940 iface_obj->get_peer_first = wpas_fst_get_peer_first; 3941 iface_obj->get_peer_next = wpas_fst_get_peer_next; 3942} 3943#endif /* CONFIG_FST */ 3944 3945static int wpas_set_wowlan_triggers(struct wpa_supplicant *wpa_s, 3946 const struct wpa_driver_capa *capa) 3947{ 3948 struct wowlan_triggers *triggers; 3949 int ret = 0; 3950 3951 if (!wpa_s->conf->wowlan_triggers) 3952 return 0; 3953 3954 triggers = wpa_get_wowlan_triggers(wpa_s->conf->wowlan_triggers, capa); 3955 if (triggers) { 3956 ret = wpa_drv_wowlan(wpa_s, triggers); 3957 os_free(triggers); 3958 } 3959 return ret; 3960} 3961 3962 3963static enum wpa_radio_work_band wpas_freq_to_band(int freq) 3964{ 3965 if (freq < 3000) 3966 return BAND_2_4_GHZ; 3967 if (freq > 50000) 3968 return BAND_60_GHZ; 3969 return BAND_5_GHZ; 3970} 3971 3972 3973static unsigned int wpas_get_bands(struct wpa_supplicant *wpa_s, 3974 const int *freqs) 3975{ 3976 int i; 3977 unsigned int band = 0; 3978 3979 if (freqs) { 3980 /* freqs are specified for the radio work */ 3981 for (i = 0; freqs[i]; i++) 3982 band |= wpas_freq_to_band(freqs[i]); 3983 } else { 3984 /* 3985 * freqs are not specified, implies all 3986 * the supported freqs by HW 3987 */ 3988 for (i = 0; i < wpa_s->hw.num_modes; i++) { 3989 if (wpa_s->hw.modes[i].num_channels != 0) { 3990 if (wpa_s->hw.modes[i].mode == 3991 HOSTAPD_MODE_IEEE80211B || 3992 wpa_s->hw.modes[i].mode == 3993 HOSTAPD_MODE_IEEE80211G) 3994 band |= BAND_2_4_GHZ; 3995 else if (wpa_s->hw.modes[i].mode == 3996 HOSTAPD_MODE_IEEE80211A) 3997 band |= BAND_5_GHZ; 3998 else if (wpa_s->hw.modes[i].mode == 3999 HOSTAPD_MODE_IEEE80211AD) 4000 band |= BAND_60_GHZ; 4001 else if (wpa_s->hw.modes[i].mode == 4002 HOSTAPD_MODE_IEEE80211ANY) 4003 band = BAND_2_4_GHZ | BAND_5_GHZ | 4004 BAND_60_GHZ; 4005 } 4006 } 4007 } 4008 4009 return band; 4010} 4011 4012 4013static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s, 4014 const char *rn) 4015{ 4016 struct wpa_supplicant *iface = wpa_s->global->ifaces; 4017 struct wpa_radio *radio; 4018 4019 while (rn && iface) { 4020 radio = iface->radio; 4021 if (radio && os_strcmp(rn, radio->name) == 0) { 4022 wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s", 4023 wpa_s->ifname, rn); 4024 dl_list_add(&radio->ifaces, &wpa_s->radio_list); 4025 return radio; 4026 } 4027 4028 iface = iface->next; 4029 } 4030 4031 wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s", 4032 wpa_s->ifname, rn ? rn : "N/A"); 4033 radio = os_zalloc(sizeof(*radio)); 4034 if (radio == NULL) 4035 return NULL; 4036 4037 if (rn) 4038 os_strlcpy(radio->name, rn, sizeof(radio->name)); 4039 dl_list_init(&radio->ifaces); 4040 dl_list_init(&radio->work); 4041 dl_list_add(&radio->ifaces, &wpa_s->radio_list); 4042 4043 return radio; 4044} 4045 4046 4047static void radio_work_free(struct wpa_radio_work *work) 4048{ 4049 if (work->wpa_s->scan_work == work) { 4050 /* This should not really happen. */ 4051 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as scan_work", 4052 work->type, work, work->started); 4053 work->wpa_s->scan_work = NULL; 4054 } 4055 4056#ifdef CONFIG_P2P 4057 if (work->wpa_s->p2p_scan_work == work) { 4058 /* This should not really happen. */ 4059 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as p2p_scan_work", 4060 work->type, work, work->started); 4061 work->wpa_s->p2p_scan_work = NULL; 4062 } 4063#endif /* CONFIG_P2P */ 4064 4065 if (work->started) { 4066 work->wpa_s->radio->num_active_works--; 4067 wpa_dbg(work->wpa_s, MSG_DEBUG, 4068 "radio_work_free('%s'@%p: num_active_works --> %u", 4069 work->type, work, 4070 work->wpa_s->radio->num_active_works); 4071 } 4072 4073 dl_list_del(&work->list); 4074 os_free(work); 4075} 4076 4077 4078static struct wpa_radio_work * radio_work_get_next_work(struct wpa_radio *radio) 4079{ 4080 struct wpa_radio_work *active_work = NULL; 4081 struct wpa_radio_work *tmp; 4082 4083 /* Get the active work to know the type and band. */ 4084 dl_list_for_each(tmp, &radio->work, struct wpa_radio_work, list) { 4085 if (tmp->started) { 4086 active_work = tmp; 4087 break; 4088 } 4089 } 4090 4091 if (!active_work) { 4092 /* No active work, start one */ 4093 radio->num_active_works = 0; 4094 dl_list_for_each(tmp, &radio->work, struct wpa_radio_work, 4095 list) { 4096 if (os_strcmp(tmp->type, "scan") == 0 && 4097 radio->external_scan_running && 4098 (((struct wpa_driver_scan_params *) 4099 tmp->ctx)->only_new_results || 4100 tmp->wpa_s->clear_driver_scan_cache)) 4101 continue; 4102 return tmp; 4103 } 4104 return NULL; 4105 } 4106 4107 if (os_strcmp(active_work->type, "sme-connect") == 0 || 4108 os_strcmp(active_work->type, "connect") == 0) { 4109 /* 4110 * If the active work is either connect or sme-connect, 4111 * do not parallelize them with other radio works. 4112 */ 4113 wpa_dbg(active_work->wpa_s, MSG_DEBUG, 4114 "Do not parallelize radio work with %s", 4115 active_work->type); 4116 return NULL; 4117 } 4118 4119 dl_list_for_each(tmp, &radio->work, struct wpa_radio_work, list) { 4120 if (tmp->started) 4121 continue; 4122 4123 /* 4124 * If connect or sme-connect are enqueued, parallelize only 4125 * those operations ahead of them in the queue. 4126 */ 4127 if (os_strcmp(tmp->type, "connect") == 0 || 4128 os_strcmp(tmp->type, "sme-connect") == 0) 4129 break; 4130 4131 /* 4132 * Check that the radio works are distinct and 4133 * on different bands. 4134 */ 4135 if (os_strcmp(active_work->type, tmp->type) != 0 && 4136 (active_work->bands != tmp->bands)) { 4137 /* 4138 * If a scan has to be scheduled through nl80211 scan 4139 * interface and if an external scan is already running, 4140 * do not schedule the scan since it is likely to get 4141 * rejected by kernel. 4142 */ 4143 if (os_strcmp(tmp->type, "scan") == 0 && 4144 radio->external_scan_running && 4145 (((struct wpa_driver_scan_params *) 4146 tmp->ctx)->only_new_results || 4147 tmp->wpa_s->clear_driver_scan_cache)) 4148 continue; 4149 4150 wpa_dbg(active_work->wpa_s, MSG_DEBUG, 4151 "active_work:%s new_work:%s", 4152 active_work->type, tmp->type); 4153 return tmp; 4154 } 4155 } 4156 4157 /* Did not find a radio work to schedule in parallel. */ 4158 return NULL; 4159} 4160 4161 4162static void radio_start_next_work(void *eloop_ctx, void *timeout_ctx) 4163{ 4164 struct wpa_radio *radio = eloop_ctx; 4165 struct wpa_radio_work *work; 4166 struct os_reltime now, diff; 4167 struct wpa_supplicant *wpa_s; 4168 4169 work = dl_list_first(&radio->work, struct wpa_radio_work, list); 4170 if (work == NULL) { 4171 radio->num_active_works = 0; 4172 return; 4173 } 4174 4175 wpa_s = dl_list_first(&radio->ifaces, struct wpa_supplicant, 4176 radio_list); 4177 4178 if (!(wpa_s && 4179 wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS)) { 4180 if (work->started) 4181 return; /* already started and still in progress */ 4182 4183 if (wpa_s && wpa_s->radio->external_scan_running) { 4184 wpa_printf(MSG_DEBUG, "Delay radio work start until externally triggered scan completes"); 4185 return; 4186 } 4187 } else { 4188 work = NULL; 4189 if (radio->num_active_works < MAX_ACTIVE_WORKS) { 4190 /* get the work to schedule next */ 4191 work = radio_work_get_next_work(radio); 4192 } 4193 if (!work) 4194 return; 4195 } 4196 4197 wpa_s = work->wpa_s; 4198 os_get_reltime(&now); 4199 os_reltime_sub(&now, &work->time, &diff); 4200 wpa_dbg(wpa_s, MSG_DEBUG, 4201 "Starting radio work '%s'@%p after %ld.%06ld second wait", 4202 work->type, work, diff.sec, diff.usec); 4203 work->started = 1; 4204 work->time = now; 4205 radio->num_active_works++; 4206 4207 work->cb(work, 0); 4208 4209 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS) && 4210 radio->num_active_works < MAX_ACTIVE_WORKS) 4211 radio_work_check_next(wpa_s); 4212} 4213 4214 4215/* 4216 * This function removes both started and pending radio works running on 4217 * the provided interface's radio. 4218 * Prior to the removal of the radio work, its callback (cb) is called with 4219 * deinit set to be 1. Each work's callback is responsible for clearing its 4220 * internal data and restoring to a correct state. 4221 * @wpa_s: wpa_supplicant data 4222 * @type: type of works to be removed 4223 * @remove_all: 1 to remove all the works on this radio, 0 to remove only 4224 * this interface's works. 4225 */ 4226void radio_remove_works(struct wpa_supplicant *wpa_s, 4227 const char *type, int remove_all) 4228{ 4229 struct wpa_radio_work *work, *tmp; 4230 struct wpa_radio *radio = wpa_s->radio; 4231 4232 dl_list_for_each_safe(work, tmp, &radio->work, struct wpa_radio_work, 4233 list) { 4234 if (type && os_strcmp(type, work->type) != 0) 4235 continue; 4236 4237 /* skip other ifaces' works */ 4238 if (!remove_all && work->wpa_s != wpa_s) 4239 continue; 4240 4241 wpa_dbg(wpa_s, MSG_DEBUG, "Remove radio work '%s'@%p%s", 4242 work->type, work, work->started ? " (started)" : ""); 4243 work->cb(work, 1); 4244 radio_work_free(work); 4245 } 4246 4247 /* in case we removed the started work */ 4248 radio_work_check_next(wpa_s); 4249} 4250 4251 4252static void radio_remove_interface(struct wpa_supplicant *wpa_s) 4253{ 4254 struct wpa_radio *radio = wpa_s->radio; 4255 4256 if (!radio) 4257 return; 4258 4259 wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s", 4260 wpa_s->ifname, radio->name); 4261 dl_list_del(&wpa_s->radio_list); 4262 radio_remove_works(wpa_s, NULL, 0); 4263 wpa_s->radio = NULL; 4264 if (!dl_list_empty(&radio->ifaces)) 4265 return; /* Interfaces remain for this radio */ 4266 4267 wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name); 4268 eloop_cancel_timeout(radio_start_next_work, radio, NULL); 4269 os_free(radio); 4270} 4271 4272 4273void radio_work_check_next(struct wpa_supplicant *wpa_s) 4274{ 4275 struct wpa_radio *radio = wpa_s->radio; 4276 4277 if (dl_list_empty(&radio->work)) 4278 return; 4279 if (wpa_s->ext_work_in_progress) { 4280 wpa_printf(MSG_DEBUG, 4281 "External radio work in progress - delay start of pending item"); 4282 return; 4283 } 4284 eloop_cancel_timeout(radio_start_next_work, radio, NULL); 4285 eloop_register_timeout(0, 0, radio_start_next_work, radio, NULL); 4286} 4287 4288 4289/** 4290 * radio_add_work - Add a radio work item 4291 * @wpa_s: Pointer to wpa_supplicant data 4292 * @freq: Frequency of the offchannel operation in MHz or 0 4293 * @type: Unique identifier for each type of work 4294 * @next: Force as the next work to be executed 4295 * @cb: Callback function for indicating when radio is available 4296 * @ctx: Context pointer for the work (work->ctx in cb()) 4297 * Returns: 0 on success, -1 on failure 4298 * 4299 * This function is used to request time for an operation that requires 4300 * exclusive radio control. Once the radio is available, the registered callback 4301 * function will be called. radio_work_done() must be called once the exclusive 4302 * radio operation has been completed, so that the radio is freed for other 4303 * operations. The special case of deinit=1 is used to free the context data 4304 * during interface removal. That does not allow the callback function to start 4305 * the radio operation, i.e., it must free any resources allocated for the radio 4306 * work and return. 4307 * 4308 * The @freq parameter can be used to indicate a single channel on which the 4309 * offchannel operation will occur. This may allow multiple radio work 4310 * operations to be performed in parallel if they apply for the same channel. 4311 * Setting this to 0 indicates that the work item may use multiple channels or 4312 * requires exclusive control of the radio. 4313 */ 4314int radio_add_work(struct wpa_supplicant *wpa_s, unsigned int freq, 4315 const char *type, int next, 4316 void (*cb)(struct wpa_radio_work *work, int deinit), 4317 void *ctx) 4318{ 4319 struct wpa_radio *radio = wpa_s->radio; 4320 struct wpa_radio_work *work; 4321 int was_empty; 4322 4323 work = os_zalloc(sizeof(*work)); 4324 if (work == NULL) 4325 return -1; 4326 wpa_dbg(wpa_s, MSG_DEBUG, "Add radio work '%s'@%p", type, work); 4327 os_get_reltime(&work->time); 4328 work->freq = freq; 4329 work->type = type; 4330 work->wpa_s = wpa_s; 4331 work->cb = cb; 4332 work->ctx = ctx; 4333 4334 if (freq) 4335 work->bands = wpas_freq_to_band(freq); 4336 else if (os_strcmp(type, "scan") == 0 || 4337 os_strcmp(type, "p2p-scan") == 0) 4338 work->bands = wpas_get_bands(wpa_s, 4339 ((struct wpa_driver_scan_params *) 4340 ctx)->freqs); 4341 else 4342 work->bands = wpas_get_bands(wpa_s, NULL); 4343 4344 was_empty = dl_list_empty(&wpa_s->radio->work); 4345 if (next) 4346 dl_list_add(&wpa_s->radio->work, &work->list); 4347 else 4348 dl_list_add_tail(&wpa_s->radio->work, &work->list); 4349 if (was_empty) { 4350 wpa_dbg(wpa_s, MSG_DEBUG, "First radio work item in the queue - schedule start immediately"); 4351 radio_work_check_next(wpa_s); 4352 } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_SIMULTANEOUS) 4353 && radio->num_active_works < MAX_ACTIVE_WORKS) { 4354 wpa_dbg(wpa_s, MSG_DEBUG, 4355 "Try to schedule a radio work (num_active_works=%u)", 4356 radio->num_active_works); 4357 radio_work_check_next(wpa_s); 4358 } 4359 4360 return 0; 4361} 4362 4363 4364/** 4365 * radio_work_done - Indicate that a radio work item has been completed 4366 * @work: Completed work 4367 * 4368 * This function is called once the callback function registered with 4369 * radio_add_work() has completed its work. 4370 */ 4371void radio_work_done(struct wpa_radio_work *work) 4372{ 4373 struct wpa_supplicant *wpa_s = work->wpa_s; 4374 struct os_reltime now, diff; 4375 unsigned int started = work->started; 4376 4377 os_get_reltime(&now); 4378 os_reltime_sub(&now, &work->time, &diff); 4379 wpa_dbg(wpa_s, MSG_DEBUG, "Radio work '%s'@%p %s in %ld.%06ld seconds", 4380 work->type, work, started ? "done" : "canceled", 4381 diff.sec, diff.usec); 4382 radio_work_free(work); 4383 if (started) 4384 radio_work_check_next(wpa_s); 4385} 4386 4387 4388struct wpa_radio_work * 4389radio_work_pending(struct wpa_supplicant *wpa_s, const char *type) 4390{ 4391 struct wpa_radio_work *work; 4392 struct wpa_radio *radio = wpa_s->radio; 4393 4394 dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) { 4395 if (work->wpa_s == wpa_s && os_strcmp(work->type, type) == 0) 4396 return work; 4397 } 4398 4399 return NULL; 4400} 4401 4402 4403static int wpas_init_driver(struct wpa_supplicant *wpa_s, 4404 struct wpa_interface *iface) 4405{ 4406 const char *ifname, *driver, *rn; 4407 4408 driver = iface->driver; 4409next_driver: 4410 if (wpa_supplicant_set_driver(wpa_s, driver) < 0) 4411 return -1; 4412 4413 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname); 4414 if (wpa_s->drv_priv == NULL) { 4415 const char *pos; 4416 pos = driver ? os_strchr(driver, ',') : NULL; 4417 if (pos) { 4418 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 4419 "driver interface - try next driver wrapper"); 4420 driver = pos + 1; 4421 goto next_driver; 4422 } 4423 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver " 4424 "interface"); 4425 return -1; 4426 } 4427 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) { 4428 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected " 4429 "driver_param '%s'", wpa_s->conf->driver_param); 4430 return -1; 4431 } 4432 4433 ifname = wpa_drv_get_ifname(wpa_s); 4434 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) { 4435 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced " 4436 "interface name with '%s'", ifname); 4437 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname)); 4438 } 4439 4440 rn = wpa_driver_get_radio_name(wpa_s); 4441 if (rn && rn[0] == '\0') 4442 rn = NULL; 4443 4444 wpa_s->radio = radio_add_interface(wpa_s, rn); 4445 if (wpa_s->radio == NULL) 4446 return -1; 4447 4448 return 0; 4449} 4450 4451 4452static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s, 4453 struct wpa_interface *iface) 4454{ 4455 struct wpa_driver_capa capa; 4456 int capa_res; 4457 4458 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver " 4459 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname, 4460 iface->confname ? iface->confname : "N/A", 4461 iface->driver ? iface->driver : "default", 4462 iface->ctrl_interface ? iface->ctrl_interface : "N/A", 4463 iface->bridge_ifname ? iface->bridge_ifname : "N/A"); 4464 4465 if (iface->confname) { 4466#ifdef CONFIG_BACKEND_FILE 4467 wpa_s->confname = os_rel2abs_path(iface->confname); 4468 if (wpa_s->confname == NULL) { 4469 wpa_printf(MSG_ERROR, "Failed to get absolute path " 4470 "for configuration file '%s'.", 4471 iface->confname); 4472 return -1; 4473 } 4474 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'", 4475 iface->confname, wpa_s->confname); 4476#else /* CONFIG_BACKEND_FILE */ 4477 wpa_s->confname = os_strdup(iface->confname); 4478#endif /* CONFIG_BACKEND_FILE */ 4479 wpa_s->conf = wpa_config_read(wpa_s->confname, NULL); 4480 if (wpa_s->conf == NULL) { 4481 wpa_printf(MSG_ERROR, "Failed to read or parse " 4482 "configuration '%s'.", wpa_s->confname); 4483 return -1; 4484 } 4485 wpa_s->confanother = os_rel2abs_path(iface->confanother); 4486 wpa_config_read(wpa_s->confanother, wpa_s->conf); 4487 4488 /* 4489 * Override ctrl_interface and driver_param if set on command 4490 * line. 4491 */ 4492 if (iface->ctrl_interface) { 4493 os_free(wpa_s->conf->ctrl_interface); 4494 wpa_s->conf->ctrl_interface = 4495 os_strdup(iface->ctrl_interface); 4496 } 4497 4498 if (iface->driver_param) { 4499 os_free(wpa_s->conf->driver_param); 4500 wpa_s->conf->driver_param = 4501 os_strdup(iface->driver_param); 4502 } 4503 4504 if (iface->p2p_mgmt && !iface->ctrl_interface) { 4505 os_free(wpa_s->conf->ctrl_interface); 4506 wpa_s->conf->ctrl_interface = NULL; 4507 } 4508 } else 4509 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface, 4510 iface->driver_param); 4511 4512 if (wpa_s->conf == NULL) { 4513 wpa_printf(MSG_ERROR, "\nNo configuration found."); 4514 return -1; 4515 } 4516 4517 if (iface->ifname == NULL) { 4518 wpa_printf(MSG_ERROR, "\nInterface name is required."); 4519 return -1; 4520 } 4521 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) { 4522 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.", 4523 iface->ifname); 4524 return -1; 4525 } 4526 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname)); 4527 4528 if (iface->bridge_ifname) { 4529 if (os_strlen(iface->bridge_ifname) >= 4530 sizeof(wpa_s->bridge_ifname)) { 4531 wpa_printf(MSG_ERROR, "\nToo long bridge interface " 4532 "name '%s'.", iface->bridge_ifname); 4533 return -1; 4534 } 4535 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname, 4536 sizeof(wpa_s->bridge_ifname)); 4537 } 4538 4539 /* RSNA Supplicant Key Management - INITIALIZE */ 4540 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 4541 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 4542 4543 /* Initialize driver interface and register driver event handler before 4544 * L2 receive handler so that association events are processed before 4545 * EAPOL-Key packets if both become available for the same select() 4546 * call. */ 4547 if (wpas_init_driver(wpa_s, iface) < 0) 4548 return -1; 4549 4550 if (wpa_supplicant_init_wpa(wpa_s) < 0) 4551 return -1; 4552 4553 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, 4554 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname : 4555 NULL); 4556 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 4557 4558 if (wpa_s->conf->dot11RSNAConfigPMKLifetime && 4559 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME, 4560 wpa_s->conf->dot11RSNAConfigPMKLifetime)) { 4561 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4562 "dot11RSNAConfigPMKLifetime"); 4563 return -1; 4564 } 4565 4566 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold && 4567 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD, 4568 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) { 4569 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4570 "dot11RSNAConfigPMKReauthThreshold"); 4571 return -1; 4572 } 4573 4574 if (wpa_s->conf->dot11RSNAConfigSATimeout && 4575 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, 4576 wpa_s->conf->dot11RSNAConfigSATimeout)) { 4577 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4578 "dot11RSNAConfigSATimeout"); 4579 return -1; 4580 } 4581 4582 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s, 4583 &wpa_s->hw.num_modes, 4584 &wpa_s->hw.flags); 4585 if (wpa_s->hw.modes) { 4586 u16 i; 4587 4588 for (i = 0; i < wpa_s->hw.num_modes; i++) { 4589 if (wpa_s->hw.modes[i].vht_capab) { 4590 wpa_s->hw_capab = CAPAB_VHT; 4591 break; 4592 } 4593 4594 if (wpa_s->hw.modes[i].ht_capab & 4595 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) 4596 wpa_s->hw_capab = CAPAB_HT40; 4597 else if (wpa_s->hw.modes[i].ht_capab && 4598 wpa_s->hw_capab == CAPAB_NO_HT_VHT) 4599 wpa_s->hw_capab = CAPAB_HT; 4600 } 4601 } 4602 4603 capa_res = wpa_drv_get_capa(wpa_s, &capa); 4604 if (capa_res == 0) { 4605 wpa_s->drv_capa_known = 1; 4606 wpa_s->drv_flags = capa.flags; 4607 wpa_s->drv_enc = capa.enc; 4608 wpa_s->drv_smps_modes = capa.smps_modes; 4609 wpa_s->drv_rrm_flags = capa.rrm_flags; 4610 wpa_s->probe_resp_offloads = capa.probe_resp_offloads; 4611 wpa_s->max_scan_ssids = capa.max_scan_ssids; 4612 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids; 4613 wpa_s->max_sched_scan_plans = capa.max_sched_scan_plans; 4614 wpa_s->max_sched_scan_plan_interval = 4615 capa.max_sched_scan_plan_interval; 4616 wpa_s->max_sched_scan_plan_iterations = 4617 capa.max_sched_scan_plan_iterations; 4618 wpa_s->sched_scan_supported = capa.sched_scan_supported; 4619 wpa_s->max_match_sets = capa.max_match_sets; 4620 wpa_s->max_remain_on_chan = capa.max_remain_on_chan; 4621 wpa_s->max_stations = capa.max_stations; 4622 wpa_s->extended_capa = capa.extended_capa; 4623 wpa_s->extended_capa_mask = capa.extended_capa_mask; 4624 wpa_s->extended_capa_len = capa.extended_capa_len; 4625 wpa_s->num_multichan_concurrent = 4626 capa.num_multichan_concurrent; 4627 wpa_s->wmm_ac_supported = capa.wmm_ac_supported; 4628 4629 if (capa.mac_addr_rand_scan_supported) 4630 wpa_s->mac_addr_rand_supported |= MAC_ADDR_RAND_SCAN; 4631 if (wpa_s->sched_scan_supported && 4632 capa.mac_addr_rand_sched_scan_supported) 4633 wpa_s->mac_addr_rand_supported |= 4634 (MAC_ADDR_RAND_SCHED_SCAN | MAC_ADDR_RAND_PNO); 4635 } 4636 if (wpa_s->max_remain_on_chan == 0) 4637 wpa_s->max_remain_on_chan = 1000; 4638 4639 /* 4640 * Only take p2p_mgmt parameters when P2P Device is supported. 4641 * Doing it here as it determines whether l2_packet_init() will be done 4642 * during wpa_supplicant_driver_init(). 4643 */ 4644 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) 4645 wpa_s->p2p_mgmt = iface->p2p_mgmt; 4646 else 4647 iface->p2p_mgmt = 1; 4648 4649 if (wpa_s->num_multichan_concurrent == 0) 4650 wpa_s->num_multichan_concurrent = 1; 4651 4652 if (wpa_supplicant_driver_init(wpa_s) < 0) 4653 return -1; 4654 4655#ifdef CONFIG_TDLS 4656 if ((!iface->p2p_mgmt || 4657 !(wpa_s->drv_flags & 4658 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) && 4659 wpa_tdls_init(wpa_s->wpa)) 4660 return -1; 4661#endif /* CONFIG_TDLS */ 4662 4663 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] && 4664 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) { 4665 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country"); 4666 return -1; 4667 } 4668 4669#ifdef CONFIG_FST 4670 if (wpa_s->conf->fst_group_id) { 4671 struct fst_iface_cfg cfg; 4672 struct fst_wpa_obj iface_obj; 4673 4674 fst_wpa_supplicant_fill_iface_obj(wpa_s, &iface_obj); 4675 os_strlcpy(cfg.group_id, wpa_s->conf->fst_group_id, 4676 sizeof(cfg.group_id)); 4677 cfg.priority = wpa_s->conf->fst_priority; 4678 cfg.llt = wpa_s->conf->fst_llt; 4679 4680 wpa_s->fst = fst_attach(wpa_s->ifname, wpa_s->own_addr, 4681 &iface_obj, &cfg); 4682 if (!wpa_s->fst) { 4683 wpa_msg(wpa_s, MSG_ERROR, 4684 "FST: Cannot attach iface %s to group %s", 4685 wpa_s->ifname, cfg.group_id); 4686 return -1; 4687 } 4688 } 4689#endif /* CONFIG_FST */ 4690 4691 if (wpas_wps_init(wpa_s)) 4692 return -1; 4693 4694 if (wpa_supplicant_init_eapol(wpa_s) < 0) 4695 return -1; 4696 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 4697 4698 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 4699 if (wpa_s->ctrl_iface == NULL) { 4700 wpa_printf(MSG_ERROR, 4701 "Failed to initialize control interface '%s'.\n" 4702 "You may have another wpa_supplicant process " 4703 "already running or the file was\n" 4704 "left by an unclean termination of wpa_supplicant " 4705 "in which case you will need\n" 4706 "to manually remove this file before starting " 4707 "wpa_supplicant again.\n", 4708 wpa_s->conf->ctrl_interface); 4709 return -1; 4710 } 4711 4712 wpa_s->gas = gas_query_init(wpa_s); 4713 if (wpa_s->gas == NULL) { 4714 wpa_printf(MSG_ERROR, "Failed to initialize GAS query"); 4715 return -1; 4716 } 4717 4718 if (iface->p2p_mgmt && wpas_p2p_init(wpa_s->global, wpa_s) < 0) { 4719 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P"); 4720 return -1; 4721 } 4722 4723 if (wpa_bss_init(wpa_s) < 0) 4724 return -1; 4725 4726 /* 4727 * Set Wake-on-WLAN triggers, if configured. 4728 * Note: We don't restore/remove the triggers on shutdown (it doesn't 4729 * have effect anyway when the interface is down). 4730 */ 4731 if (capa_res == 0 && wpas_set_wowlan_triggers(wpa_s, &capa) < 0) 4732 return -1; 4733 4734#ifdef CONFIG_EAP_PROXY 4735{ 4736 size_t len; 4737 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, wpa_s->imsi, 4738 &len); 4739 if (wpa_s->mnc_len > 0) { 4740 wpa_s->imsi[len] = '\0'; 4741 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)", 4742 wpa_s->imsi, wpa_s->mnc_len); 4743 } else { 4744 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available"); 4745 } 4746} 4747#endif /* CONFIG_EAP_PROXY */ 4748 4749 if (pcsc_reader_init(wpa_s) < 0) 4750 return -1; 4751 4752 if (wpas_init_ext_pw(wpa_s) < 0) 4753 return -1; 4754 4755 wpas_rrm_reset(wpa_s); 4756 4757 wpas_sched_scan_plans_set(wpa_s, wpa_s->conf->sched_scan_plans); 4758 4759#ifdef CONFIG_HS20 4760 hs20_init(wpa_s); 4761#endif /* CONFIG_HS20 */ 4762 4763 return 0; 4764} 4765 4766 4767static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, 4768 int notify, int terminate) 4769{ 4770 struct wpa_global *global = wpa_s->global; 4771 struct wpa_supplicant *iface, *prev; 4772 4773 if (wpa_s == wpa_s->parent) 4774 wpas_p2p_group_remove(wpa_s, "*"); 4775 4776 iface = global->ifaces; 4777 while (iface) { 4778 if (iface == wpa_s || iface->parent != wpa_s) { 4779 iface = iface->next; 4780 continue; 4781 } 4782 wpa_printf(MSG_DEBUG, 4783 "Remove remaining child interface %s from parent %s", 4784 iface->ifname, wpa_s->ifname); 4785 prev = iface; 4786 iface = iface->next; 4787 wpa_supplicant_remove_iface(global, prev, terminate); 4788 } 4789 4790 wpa_s->disconnected = 1; 4791 if (wpa_s->drv_priv) { 4792 wpa_supplicant_deauthenticate(wpa_s, 4793 WLAN_REASON_DEAUTH_LEAVING); 4794 4795 wpa_drv_set_countermeasures(wpa_s, 0); 4796 wpa_clear_keys(wpa_s, NULL); 4797 } 4798 4799 wpa_supplicant_cleanup(wpa_s); 4800 wpas_p2p_deinit_iface(wpa_s); 4801 4802 wpas_ctrl_radio_work_flush(wpa_s); 4803 radio_remove_interface(wpa_s); 4804 4805#ifdef CONFIG_FST 4806 if (wpa_s->fst) { 4807 fst_detach(wpa_s->fst); 4808 wpa_s->fst = NULL; 4809 } 4810 if (wpa_s->received_mb_ies) { 4811 wpabuf_free(wpa_s->received_mb_ies); 4812 wpa_s->received_mb_ies = NULL; 4813 } 4814#endif /* CONFIG_FST */ 4815 4816 if (wpa_s->drv_priv) 4817 wpa_drv_deinit(wpa_s); 4818 4819 if (notify) 4820 wpas_notify_iface_removed(wpa_s); 4821 4822 if (terminate) 4823 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING); 4824 4825 if (wpa_s->ctrl_iface) { 4826 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 4827 wpa_s->ctrl_iface = NULL; 4828 } 4829 4830#ifdef CONFIG_MESH 4831 if (wpa_s->ifmsh) { 4832 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh); 4833 wpa_s->ifmsh = NULL; 4834 } 4835#endif /* CONFIG_MESH */ 4836 4837 if (wpa_s->conf != NULL) { 4838 wpa_config_free(wpa_s->conf); 4839 wpa_s->conf = NULL; 4840 } 4841 4842 os_free(wpa_s->ssids_from_scan_req); 4843 4844 os_free(wpa_s); 4845} 4846 4847 4848/** 4849 * wpa_supplicant_add_iface - Add a new network interface 4850 * @global: Pointer to global data from wpa_supplicant_init() 4851 * @iface: Interface configuration options 4852 * @parent: Parent interface or %NULL to assign new interface as parent 4853 * Returns: Pointer to the created interface or %NULL on failure 4854 * 4855 * This function is used to add new network interfaces for %wpa_supplicant. 4856 * This can be called before wpa_supplicant_run() to add interfaces before the 4857 * main event loop has been started. In addition, new interfaces can be added 4858 * dynamically while %wpa_supplicant is already running. This could happen, 4859 * e.g., when a hotplug network adapter is inserted. 4860 */ 4861struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global, 4862 struct wpa_interface *iface, 4863 struct wpa_supplicant *parent) 4864{ 4865 struct wpa_supplicant *wpa_s; 4866 struct wpa_interface t_iface; 4867 struct wpa_ssid *ssid; 4868 4869 if (global == NULL || iface == NULL) 4870 return NULL; 4871 4872 wpa_s = wpa_supplicant_alloc(parent); 4873 if (wpa_s == NULL) 4874 return NULL; 4875 4876 wpa_s->global = global; 4877 4878 t_iface = *iface; 4879 if (global->params.override_driver) { 4880 wpa_printf(MSG_DEBUG, "Override interface parameter: driver " 4881 "('%s' -> '%s')", 4882 iface->driver, global->params.override_driver); 4883 t_iface.driver = global->params.override_driver; 4884 } 4885 if (global->params.override_ctrl_interface) { 4886 wpa_printf(MSG_DEBUG, "Override interface parameter: " 4887 "ctrl_interface ('%s' -> '%s')", 4888 iface->ctrl_interface, 4889 global->params.override_ctrl_interface); 4890 t_iface.ctrl_interface = 4891 global->params.override_ctrl_interface; 4892 } 4893 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) { 4894 wpa_printf(MSG_DEBUG, "Failed to add interface %s", 4895 iface->ifname); 4896 wpa_supplicant_deinit_iface(wpa_s, 0, 0); 4897 return NULL; 4898 } 4899 4900 if (iface->p2p_mgmt == 0) { 4901 /* Notify the control interfaces about new iface */ 4902 if (wpas_notify_iface_added(wpa_s)) { 4903 wpa_supplicant_deinit_iface(wpa_s, 1, 0); 4904 return NULL; 4905 } 4906 4907 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 4908 wpas_notify_network_added(wpa_s, ssid); 4909 } 4910 4911 wpa_s->next = global->ifaces; 4912 global->ifaces = wpa_s; 4913 4914 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname); 4915 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 4916 4917#ifdef CONFIG_P2P 4918 if (wpa_s->global->p2p == NULL && 4919 !wpa_s->global->p2p_disabled && !wpa_s->conf->p2p_disabled && 4920 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 4921 wpas_p2p_add_p2pdev_interface( 4922 wpa_s, wpa_s->global->params.conf_p2p_dev) < 0) { 4923 wpa_printf(MSG_INFO, 4924 "P2P: Failed to enable P2P Device interface"); 4925 /* Try to continue without. P2P will be disabled. */ 4926 } 4927#endif /* CONFIG_P2P */ 4928 4929 return wpa_s; 4930} 4931 4932 4933/** 4934 * wpa_supplicant_remove_iface - Remove a network interface 4935 * @global: Pointer to global data from wpa_supplicant_init() 4936 * @wpa_s: Pointer to the network interface to be removed 4937 * Returns: 0 if interface was removed, -1 if interface was not found 4938 * 4939 * This function can be used to dynamically remove network interfaces from 4940 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In 4941 * addition, this function is used to remove all remaining interfaces when 4942 * %wpa_supplicant is terminated. 4943 */ 4944int wpa_supplicant_remove_iface(struct wpa_global *global, 4945 struct wpa_supplicant *wpa_s, 4946 int terminate) 4947{ 4948 struct wpa_supplicant *prev; 4949#ifdef CONFIG_MESH 4950 unsigned int mesh_if_created = wpa_s->mesh_if_created; 4951 char *ifname = NULL; 4952#endif /* CONFIG_MESH */ 4953 4954 /* Remove interface from the global list of interfaces */ 4955 prev = global->ifaces; 4956 if (prev == wpa_s) { 4957 global->ifaces = wpa_s->next; 4958 } else { 4959 while (prev && prev->next != wpa_s) 4960 prev = prev->next; 4961 if (prev == NULL) 4962 return -1; 4963 prev->next = wpa_s->next; 4964 } 4965 4966 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname); 4967 4968#ifdef CONFIG_MESH 4969 if (mesh_if_created) { 4970 ifname = os_strdup(wpa_s->ifname); 4971 if (ifname == NULL) { 4972 wpa_dbg(wpa_s, MSG_ERROR, 4973 "mesh: Failed to malloc ifname"); 4974 return -1; 4975 } 4976 } 4977#endif /* CONFIG_MESH */ 4978 4979 if (global->p2p_group_formation == wpa_s) 4980 global->p2p_group_formation = NULL; 4981 if (global->p2p_invite_group == wpa_s) 4982 global->p2p_invite_group = NULL; 4983 wpa_supplicant_deinit_iface(wpa_s, 1, terminate); 4984 4985#ifdef CONFIG_MESH 4986 if (mesh_if_created) { 4987 wpa_drv_if_remove(global->ifaces, WPA_IF_MESH, ifname); 4988 os_free(ifname); 4989 } 4990#endif /* CONFIG_MESH */ 4991 4992 return 0; 4993} 4994 4995 4996/** 4997 * wpa_supplicant_get_eap_mode - Get the current EAP mode 4998 * @wpa_s: Pointer to the network interface 4999 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found 5000 */ 5001const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s) 5002{ 5003 const char *eapol_method; 5004 5005 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 && 5006 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 5007 return "NO-EAP"; 5008 } 5009 5010 eapol_method = eapol_sm_get_method_name(wpa_s->eapol); 5011 if (eapol_method == NULL) 5012 return "UNKNOWN-EAP"; 5013 5014 return eapol_method; 5015} 5016 5017 5018/** 5019 * wpa_supplicant_get_iface - Get a new network interface 5020 * @global: Pointer to global data from wpa_supplicant_init() 5021 * @ifname: Interface name 5022 * Returns: Pointer to the interface or %NULL if not found 5023 */ 5024struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global, 5025 const char *ifname) 5026{ 5027 struct wpa_supplicant *wpa_s; 5028 5029 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5030 if (os_strcmp(wpa_s->ifname, ifname) == 0) 5031 return wpa_s; 5032 } 5033 return NULL; 5034} 5035 5036 5037#ifndef CONFIG_NO_WPA_MSG 5038static const char * wpa_supplicant_msg_ifname_cb(void *ctx) 5039{ 5040 struct wpa_supplicant *wpa_s = ctx; 5041 if (wpa_s == NULL) 5042 return NULL; 5043 return wpa_s->ifname; 5044} 5045#endif /* CONFIG_NO_WPA_MSG */ 5046 5047 5048#ifndef WPA_SUPPLICANT_CLEANUP_INTERVAL 5049#define WPA_SUPPLICANT_CLEANUP_INTERVAL 10 5050#endif /* WPA_SUPPLICANT_CLEANUP_INTERVAL */ 5051 5052/* Periodic cleanup tasks */ 5053static void wpas_periodic(void *eloop_ctx, void *timeout_ctx) 5054{ 5055 struct wpa_global *global = eloop_ctx; 5056 struct wpa_supplicant *wpa_s; 5057 5058 eloop_register_timeout(WPA_SUPPLICANT_CLEANUP_INTERVAL, 0, 5059 wpas_periodic, global, NULL); 5060 5061#ifdef CONFIG_P2P 5062 if (global->p2p) 5063 p2p_expire_peers(global->p2p); 5064#endif /* CONFIG_P2P */ 5065 5066 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 5067 wpa_bss_flush_by_age(wpa_s, wpa_s->conf->bss_expiration_age); 5068#ifdef CONFIG_AP 5069 ap_periodic(wpa_s); 5070#endif /* CONFIG_AP */ 5071 } 5072} 5073 5074 5075/** 5076 * wpa_supplicant_init - Initialize %wpa_supplicant 5077 * @params: Parameters for %wpa_supplicant 5078 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure 5079 * 5080 * This function is used to initialize %wpa_supplicant. After successful 5081 * initialization, the returned data pointer can be used to add and remove 5082 * network interfaces, and eventually, to deinitialize %wpa_supplicant. 5083 */ 5084struct wpa_global * wpa_supplicant_init(struct wpa_params *params) 5085{ 5086 struct wpa_global *global; 5087 int ret, i; 5088 5089 if (params == NULL) 5090 return NULL; 5091 5092#ifdef CONFIG_DRIVER_NDIS 5093 { 5094 void driver_ndis_init_ops(void); 5095 driver_ndis_init_ops(); 5096 } 5097#endif /* CONFIG_DRIVER_NDIS */ 5098 5099#ifndef CONFIG_NO_WPA_MSG 5100 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb); 5101#endif /* CONFIG_NO_WPA_MSG */ 5102 5103 if (params->wpa_debug_file_path) 5104 wpa_debug_open_file(params->wpa_debug_file_path); 5105 else 5106 wpa_debug_setup_stdout(); 5107 if (params->wpa_debug_syslog) 5108 wpa_debug_open_syslog(); 5109 if (params->wpa_debug_tracing) { 5110 ret = wpa_debug_open_linux_tracing(); 5111 if (ret) { 5112 wpa_printf(MSG_ERROR, 5113 "Failed to enable trace logging"); 5114 return NULL; 5115 } 5116 } 5117 5118 ret = eap_register_methods(); 5119 if (ret) { 5120 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 5121 if (ret == -2) 5122 wpa_printf(MSG_ERROR, "Two or more EAP methods used " 5123 "the same EAP type."); 5124 return NULL; 5125 } 5126 5127 global = os_zalloc(sizeof(*global)); 5128 if (global == NULL) 5129 return NULL; 5130 dl_list_init(&global->p2p_srv_bonjour); 5131 dl_list_init(&global->p2p_srv_upnp); 5132 global->params.daemonize = params->daemonize; 5133 global->params.wait_for_monitor = params->wait_for_monitor; 5134 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface; 5135 if (params->pid_file) 5136 global->params.pid_file = os_strdup(params->pid_file); 5137 if (params->ctrl_interface) 5138 global->params.ctrl_interface = 5139 os_strdup(params->ctrl_interface); 5140 if (params->ctrl_interface_group) 5141 global->params.ctrl_interface_group = 5142 os_strdup(params->ctrl_interface_group); 5143 if (params->override_driver) 5144 global->params.override_driver = 5145 os_strdup(params->override_driver); 5146 if (params->override_ctrl_interface) 5147 global->params.override_ctrl_interface = 5148 os_strdup(params->override_ctrl_interface); 5149#ifdef CONFIG_P2P 5150 if (params->conf_p2p_dev) 5151 global->params.conf_p2p_dev = 5152 os_strdup(params->conf_p2p_dev); 5153#endif /* CONFIG_P2P */ 5154 wpa_debug_level = global->params.wpa_debug_level = 5155 params->wpa_debug_level; 5156 wpa_debug_show_keys = global->params.wpa_debug_show_keys = 5157 params->wpa_debug_show_keys; 5158 wpa_debug_timestamp = global->params.wpa_debug_timestamp = 5159 params->wpa_debug_timestamp; 5160 5161 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR); 5162 5163 if (eloop_init()) { 5164 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 5165 wpa_supplicant_deinit(global); 5166 return NULL; 5167 } 5168 5169 random_init(params->entropy_file); 5170 5171 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global); 5172 if (global->ctrl_iface == NULL) { 5173 wpa_supplicant_deinit(global); 5174 return NULL; 5175 } 5176 5177 if (wpas_notify_supplicant_initialized(global)) { 5178 wpa_supplicant_deinit(global); 5179 return NULL; 5180 } 5181 5182 for (i = 0; wpa_drivers[i]; i++) 5183 global->drv_count++; 5184 if (global->drv_count == 0) { 5185 wpa_printf(MSG_ERROR, "No drivers enabled"); 5186 wpa_supplicant_deinit(global); 5187 return NULL; 5188 } 5189 global->drv_priv = os_calloc(global->drv_count, sizeof(void *)); 5190 if (global->drv_priv == NULL) { 5191 wpa_supplicant_deinit(global); 5192 return NULL; 5193 } 5194 5195#ifdef CONFIG_WIFI_DISPLAY 5196 if (wifi_display_init(global) < 0) { 5197 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display"); 5198 wpa_supplicant_deinit(global); 5199 return NULL; 5200 } 5201#endif /* CONFIG_WIFI_DISPLAY */ 5202 5203 eloop_register_timeout(WPA_SUPPLICANT_CLEANUP_INTERVAL, 0, 5204 wpas_periodic, global, NULL); 5205 5206 return global; 5207} 5208 5209 5210/** 5211 * wpa_supplicant_run - Run the %wpa_supplicant main event loop 5212 * @global: Pointer to global data from wpa_supplicant_init() 5213 * Returns: 0 after successful event loop run, -1 on failure 5214 * 5215 * This function starts the main event loop and continues running as long as 5216 * there are any remaining events. In most cases, this function is running as 5217 * long as the %wpa_supplicant process in still in use. 5218 */ 5219int wpa_supplicant_run(struct wpa_global *global) 5220{ 5221 struct wpa_supplicant *wpa_s; 5222 5223 if (global->params.daemonize && 5224 (wpa_supplicant_daemon(global->params.pid_file) || 5225 eloop_sock_requeue())) 5226 return -1; 5227 5228 if (global->params.wait_for_monitor) { 5229 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) 5230 if (wpa_s->ctrl_iface && !wpa_s->p2p_mgmt) 5231 wpa_supplicant_ctrl_iface_wait( 5232 wpa_s->ctrl_iface); 5233 } 5234 5235 eloop_register_signal_terminate(wpa_supplicant_terminate, global); 5236 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); 5237 5238 eloop_run(); 5239 5240 return 0; 5241} 5242 5243 5244/** 5245 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant 5246 * @global: Pointer to global data from wpa_supplicant_init() 5247 * 5248 * This function is called to deinitialize %wpa_supplicant and to free all 5249 * allocated resources. Remaining network interfaces will also be removed. 5250 */ 5251void wpa_supplicant_deinit(struct wpa_global *global) 5252{ 5253 int i; 5254 5255 if (global == NULL) 5256 return; 5257 5258 eloop_cancel_timeout(wpas_periodic, global, NULL); 5259 5260#ifdef CONFIG_WIFI_DISPLAY 5261 wifi_display_deinit(global); 5262#endif /* CONFIG_WIFI_DISPLAY */ 5263 5264 while (global->ifaces) 5265 wpa_supplicant_remove_iface(global, global->ifaces, 1); 5266 5267 if (global->ctrl_iface) 5268 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface); 5269 5270 wpas_notify_supplicant_deinitialized(global); 5271 5272 eap_peer_unregister_methods(); 5273#ifdef CONFIG_AP 5274 eap_server_unregister_methods(); 5275#endif /* CONFIG_AP */ 5276 5277 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) { 5278 if (!global->drv_priv[i]) 5279 continue; 5280 wpa_drivers[i]->global_deinit(global->drv_priv[i]); 5281 } 5282 os_free(global->drv_priv); 5283 5284 random_deinit(); 5285 5286 eloop_destroy(); 5287 5288 if (global->params.pid_file) { 5289 os_daemonize_terminate(global->params.pid_file); 5290 os_free(global->params.pid_file); 5291 } 5292 os_free(global->params.ctrl_interface); 5293 os_free(global->params.ctrl_interface_group); 5294 os_free(global->params.override_driver); 5295 os_free(global->params.override_ctrl_interface); 5296#ifdef CONFIG_P2P 5297 os_free(global->params.conf_p2p_dev); 5298#endif /* CONFIG_P2P */ 5299 5300 os_free(global->p2p_disallow_freq.range); 5301 os_free(global->p2p_go_avoid_freq.range); 5302 os_free(global->add_psk); 5303 5304 os_free(global); 5305 wpa_debug_close_syslog(); 5306 wpa_debug_close_file(); 5307 wpa_debug_close_linux_tracing(); 5308} 5309 5310 5311void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s) 5312{ 5313 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 5314 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 5315 char country[3]; 5316 country[0] = wpa_s->conf->country[0]; 5317 country[1] = wpa_s->conf->country[1]; 5318 country[2] = '\0'; 5319 if (wpa_drv_set_country(wpa_s, country) < 0) { 5320 wpa_printf(MSG_ERROR, "Failed to set country code " 5321 "'%s'", country); 5322 } 5323 } 5324 5325 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND) 5326 wpas_init_ext_pw(wpa_s); 5327 5328 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SCHED_SCAN_PLANS) 5329 wpas_sched_scan_plans_set(wpa_s, wpa_s->conf->sched_scan_plans); 5330 5331#ifdef CONFIG_WPS 5332 wpas_wps_update_config(wpa_s); 5333#endif /* CONFIG_WPS */ 5334 wpas_p2p_update_config(wpa_s); 5335 wpa_s->conf->changed_parameters = 0; 5336} 5337 5338 5339void add_freq(int *freqs, int *num_freqs, int freq) 5340{ 5341 int i; 5342 5343 for (i = 0; i < *num_freqs; i++) { 5344 if (freqs[i] == freq) 5345 return; 5346 } 5347 5348 freqs[*num_freqs] = freq; 5349 (*num_freqs)++; 5350} 5351 5352 5353static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s) 5354{ 5355 struct wpa_bss *bss, *cbss; 5356 const int max_freqs = 10; 5357 int *freqs; 5358 int num_freqs = 0; 5359 5360 freqs = os_calloc(max_freqs + 1, sizeof(int)); 5361 if (freqs == NULL) 5362 return NULL; 5363 5364 cbss = wpa_s->current_bss; 5365 5366 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 5367 if (bss == cbss) 5368 continue; 5369 if (bss->ssid_len == cbss->ssid_len && 5370 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 && 5371 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) { 5372 add_freq(freqs, &num_freqs, bss->freq); 5373 if (num_freqs == max_freqs) 5374 break; 5375 } 5376 } 5377 5378 if (num_freqs == 0) { 5379 os_free(freqs); 5380 freqs = NULL; 5381 } 5382 5383 return freqs; 5384} 5385 5386 5387void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid) 5388{ 5389 int timeout; 5390 int count; 5391 int *freqs = NULL; 5392 5393 wpas_connect_work_done(wpa_s); 5394 5395 /* 5396 * Remove possible authentication timeout since the connection failed. 5397 */ 5398 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 5399 5400 /* 5401 * There is no point in blacklisting the AP if this event is 5402 * generated based on local request to disconnect. 5403 */ 5404 if (wpa_s->own_disconnect_req) { 5405 wpa_s->own_disconnect_req = 0; 5406 wpa_dbg(wpa_s, MSG_DEBUG, 5407 "Ignore connection failure due to local request to disconnect"); 5408 return; 5409 } 5410 if (wpa_s->disconnected) { 5411 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore connection failure " 5412 "indication since interface has been put into " 5413 "disconnected state"); 5414 return; 5415 } 5416 5417 /* 5418 * Add the failed BSSID into the blacklist and speed up next scan 5419 * attempt if there could be other APs that could accept association. 5420 * The current blacklist count indicates how many times we have tried 5421 * connecting to this AP and multiple attempts mean that other APs are 5422 * either not available or has already been tried, so that we can start 5423 * increasing the delay here to avoid constant scanning. 5424 */ 5425 count = wpa_blacklist_add(wpa_s, bssid); 5426 if (count == 1 && wpa_s->current_bss) { 5427 /* 5428 * This BSS was not in the blacklist before. If there is 5429 * another BSS available for the same ESS, we should try that 5430 * next. Otherwise, we may as well try this one once more 5431 * before allowing other, likely worse, ESSes to be considered. 5432 */ 5433 freqs = get_bss_freqs_in_ess(wpa_s); 5434 if (freqs) { 5435 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS " 5436 "has been seen; try it next"); 5437 wpa_blacklist_add(wpa_s, bssid); 5438 /* 5439 * On the next scan, go through only the known channels 5440 * used in this ESS based on previous scans to speed up 5441 * common load balancing use case. 5442 */ 5443 os_free(wpa_s->next_scan_freqs); 5444 wpa_s->next_scan_freqs = freqs; 5445 } 5446 } 5447 5448 /* 5449 * Add previous failure count in case the temporary blacklist was 5450 * cleared due to no other BSSes being available. 5451 */ 5452 count += wpa_s->extra_blacklist_count; 5453 5454 if (count > 3 && wpa_s->current_ssid) { 5455 wpa_printf(MSG_DEBUG, "Continuous association failures - " 5456 "consider temporary network disabling"); 5457 wpas_auth_failed(wpa_s, "CONN_FAILED"); 5458 } 5459 5460 switch (count) { 5461 case 1: 5462 timeout = 100; 5463 break; 5464 case 2: 5465 timeout = 500; 5466 break; 5467 case 3: 5468 timeout = 1000; 5469 break; 5470 case 4: 5471 timeout = 5000; 5472 break; 5473 default: 5474 timeout = 10000; 5475 break; 5476 } 5477 5478 wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d " 5479 "ms", count, timeout); 5480 5481 /* 5482 * TODO: if more than one possible AP is available in scan results, 5483 * could try the other ones before requesting a new scan. 5484 */ 5485 wpa_supplicant_req_scan(wpa_s, timeout / 1000, 5486 1000 * (timeout % 1000)); 5487} 5488 5489 5490int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s) 5491{ 5492 return wpa_s->conf->ap_scan == 2 || 5493 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION); 5494} 5495 5496 5497#if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW) 5498int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s, 5499 struct wpa_ssid *ssid, 5500 const char *field, 5501 const char *value) 5502{ 5503#ifdef IEEE8021X_EAPOL 5504 struct eap_peer_config *eap = &ssid->eap; 5505 5506 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field); 5507 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value", 5508 (const u8 *) value, os_strlen(value)); 5509 5510 switch (wpa_supplicant_ctrl_req_from_string(field)) { 5511 case WPA_CTRL_REQ_EAP_IDENTITY: 5512 os_free(eap->identity); 5513 eap->identity = (u8 *) os_strdup(value); 5514 eap->identity_len = os_strlen(value); 5515 eap->pending_req_identity = 0; 5516 if (ssid == wpa_s->current_ssid) 5517 wpa_s->reassociate = 1; 5518 break; 5519 case WPA_CTRL_REQ_EAP_PASSWORD: 5520 bin_clear_free(eap->password, eap->password_len); 5521 eap->password = (u8 *) os_strdup(value); 5522 eap->password_len = os_strlen(value); 5523 eap->pending_req_password = 0; 5524 if (ssid == wpa_s->current_ssid) 5525 wpa_s->reassociate = 1; 5526 break; 5527 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 5528 bin_clear_free(eap->new_password, eap->new_password_len); 5529 eap->new_password = (u8 *) os_strdup(value); 5530 eap->new_password_len = os_strlen(value); 5531 eap->pending_req_new_password = 0; 5532 if (ssid == wpa_s->current_ssid) 5533 wpa_s->reassociate = 1; 5534 break; 5535 case WPA_CTRL_REQ_EAP_PIN: 5536 str_clear_free(eap->pin); 5537 eap->pin = os_strdup(value); 5538 eap->pending_req_pin = 0; 5539 if (ssid == wpa_s->current_ssid) 5540 wpa_s->reassociate = 1; 5541 break; 5542 case WPA_CTRL_REQ_EAP_OTP: 5543 bin_clear_free(eap->otp, eap->otp_len); 5544 eap->otp = (u8 *) os_strdup(value); 5545 eap->otp_len = os_strlen(value); 5546 os_free(eap->pending_req_otp); 5547 eap->pending_req_otp = NULL; 5548 eap->pending_req_otp_len = 0; 5549 break; 5550 case WPA_CTRL_REQ_EAP_PASSPHRASE: 5551 str_clear_free(eap->private_key_passwd); 5552 eap->private_key_passwd = os_strdup(value); 5553 eap->pending_req_passphrase = 0; 5554 if (ssid == wpa_s->current_ssid) 5555 wpa_s->reassociate = 1; 5556 break; 5557 case WPA_CTRL_REQ_SIM: 5558 str_clear_free(eap->external_sim_resp); 5559 eap->external_sim_resp = os_strdup(value); 5560 break; 5561 case WPA_CTRL_REQ_PSK_PASSPHRASE: 5562 if (wpa_config_set(ssid, "psk", value, 0) < 0) 5563 return -1; 5564 ssid->mem_only_psk = 1; 5565 if (ssid->passphrase) 5566 wpa_config_update_psk(ssid); 5567 if (wpa_s->wpa_state == WPA_SCANNING && !wpa_s->scanning) 5568 wpa_supplicant_req_scan(wpa_s, 0, 0); 5569 break; 5570 case WPA_CTRL_REQ_EXT_CERT_CHECK: 5571 if (eap->pending_ext_cert_check != PENDING_CHECK) 5572 return -1; 5573 if (os_strcmp(value, "good") == 0) 5574 eap->pending_ext_cert_check = EXT_CERT_CHECK_GOOD; 5575 else if (os_strcmp(value, "bad") == 0) 5576 eap->pending_ext_cert_check = EXT_CERT_CHECK_BAD; 5577 else 5578 return -1; 5579 break; 5580 default: 5581 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field); 5582 return -1; 5583 } 5584 5585 return 0; 5586#else /* IEEE8021X_EAPOL */ 5587 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included"); 5588 return -1; 5589#endif /* IEEE8021X_EAPOL */ 5590} 5591#endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */ 5592 5593 5594int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 5595{ 5596 int i; 5597 unsigned int drv_enc; 5598 5599 if (wpa_s->p2p_mgmt) 5600 return 1; /* no normal network profiles on p2p_mgmt interface */ 5601 5602 if (ssid == NULL) 5603 return 1; 5604 5605 if (ssid->disabled) 5606 return 1; 5607 5608 if (wpa_s->drv_capa_known) 5609 drv_enc = wpa_s->drv_enc; 5610 else 5611 drv_enc = (unsigned int) -1; 5612 5613 for (i = 0; i < NUM_WEP_KEYS; i++) { 5614 size_t len = ssid->wep_key_len[i]; 5615 if (len == 0) 5616 continue; 5617 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40)) 5618 continue; 5619 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104)) 5620 continue; 5621 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128)) 5622 continue; 5623 return 1; /* invalid WEP key */ 5624 } 5625 5626 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 5627 (!ssid->passphrase || ssid->ssid_len != 0) && !ssid->ext_psk && 5628 !ssid->mem_only_psk) 5629 return 1; 5630 5631 return 0; 5632} 5633 5634 5635int wpas_get_ssid_pmf(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 5636{ 5637#ifdef CONFIG_IEEE80211W 5638 if (ssid == NULL || ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) { 5639 if (wpa_s->conf->pmf == MGMT_FRAME_PROTECTION_OPTIONAL && 5640 !(wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)) { 5641 /* 5642 * Driver does not support BIP -- ignore pmf=1 default 5643 * since the connection with PMF would fail and the 5644 * configuration does not require PMF to be enabled. 5645 */ 5646 return NO_MGMT_FRAME_PROTECTION; 5647 } 5648 5649 return wpa_s->conf->pmf; 5650 } 5651 5652 return ssid->ieee80211w; 5653#else /* CONFIG_IEEE80211W */ 5654 return NO_MGMT_FRAME_PROTECTION; 5655#endif /* CONFIG_IEEE80211W */ 5656} 5657 5658 5659int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s) 5660{ 5661 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P) 5662 return 1; 5663 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA) 5664 return 0; 5665 return -1; 5666} 5667 5668 5669void wpas_auth_failed(struct wpa_supplicant *wpa_s, char *reason) 5670{ 5671 struct wpa_ssid *ssid = wpa_s->current_ssid; 5672 int dur; 5673 struct os_reltime now; 5674 5675 if (ssid == NULL) { 5676 wpa_printf(MSG_DEBUG, "Authentication failure but no known " 5677 "SSID block"); 5678 return; 5679 } 5680 5681 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS) 5682 return; 5683 5684 ssid->auth_failures++; 5685 5686#ifdef CONFIG_P2P 5687 if (ssid->p2p_group && 5688 (wpa_s->p2p_in_provisioning || wpa_s->show_group_started)) { 5689 /* 5690 * Skip the wait time since there is a short timeout on the 5691 * connection to a P2P group. 5692 */ 5693 return; 5694 } 5695#endif /* CONFIG_P2P */ 5696 5697 if (ssid->auth_failures > 50) 5698 dur = 300; 5699 else if (ssid->auth_failures > 10) 5700 dur = 120; 5701 else if (ssid->auth_failures > 5) 5702 dur = 90; 5703 else if (ssid->auth_failures > 3) 5704 dur = 60; 5705 else if (ssid->auth_failures > 2) 5706 dur = 30; 5707 else if (ssid->auth_failures > 1) 5708 dur = 20; 5709 else 5710 dur = 10; 5711 5712 if (ssid->auth_failures > 1 && 5713 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) 5714 dur += os_random() % (ssid->auth_failures * 10); 5715 5716 os_get_reltime(&now); 5717 if (now.sec + dur <= ssid->disabled_until.sec) 5718 return; 5719 5720 ssid->disabled_until.sec = now.sec + dur; 5721 5722 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED 5723 "id=%d ssid=\"%s\" auth_failures=%u duration=%d reason=%s", 5724 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 5725 ssid->auth_failures, dur, reason); 5726} 5727 5728 5729void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s, 5730 struct wpa_ssid *ssid, int clear_failures) 5731{ 5732 if (ssid == NULL) 5733 return; 5734 5735 if (ssid->disabled_until.sec) { 5736 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED 5737 "id=%d ssid=\"%s\"", 5738 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 5739 } 5740 ssid->disabled_until.sec = 0; 5741 ssid->disabled_until.usec = 0; 5742 if (clear_failures) 5743 ssid->auth_failures = 0; 5744} 5745 5746 5747int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid) 5748{ 5749 size_t i; 5750 5751 if (wpa_s->disallow_aps_bssid == NULL) 5752 return 0; 5753 5754 for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) { 5755 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN, 5756 bssid, ETH_ALEN) == 0) 5757 return 1; 5758 } 5759 5760 return 0; 5761} 5762 5763 5764int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid, 5765 size_t ssid_len) 5766{ 5767 size_t i; 5768 5769 if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL) 5770 return 0; 5771 5772 for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) { 5773 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i]; 5774 if (ssid_len == s->ssid_len && 5775 os_memcmp(ssid, s->ssid, ssid_len) == 0) 5776 return 1; 5777 } 5778 5779 return 0; 5780} 5781 5782 5783/** 5784 * wpas_request_connection - Request a new connection 5785 * @wpa_s: Pointer to the network interface 5786 * 5787 * This function is used to request a new connection to be found. It will mark 5788 * the interface to allow reassociation and request a new scan to find a 5789 * suitable network to connect to. 5790 */ 5791void wpas_request_connection(struct wpa_supplicant *wpa_s) 5792{ 5793 wpa_s->normal_scans = 0; 5794 wpa_s->scan_req = NORMAL_SCAN_REQ; 5795 wpa_supplicant_reinit_autoscan(wpa_s); 5796 wpa_s->extra_blacklist_count = 0; 5797 wpa_s->disconnected = 0; 5798 wpa_s->reassociate = 1; 5799 5800 if (wpa_supplicant_fast_associate(wpa_s) != 1) 5801 wpa_supplicant_req_scan(wpa_s, 0, 0); 5802 else 5803 wpa_s->reattach = 0; 5804} 5805 5806 5807void dump_freq_data(struct wpa_supplicant *wpa_s, const char *title, 5808 struct wpa_used_freq_data *freqs_data, 5809 unsigned int len) 5810{ 5811 unsigned int i; 5812 5813 wpa_dbg(wpa_s, MSG_DEBUG, "Shared frequencies (len=%u): %s", 5814 len, title); 5815 for (i = 0; i < len; i++) { 5816 struct wpa_used_freq_data *cur = &freqs_data[i]; 5817 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d, flags=0x%X", 5818 i, cur->freq, cur->flags); 5819 } 5820} 5821 5822 5823/* 5824 * Find the operating frequencies of any of the virtual interfaces that 5825 * are using the same radio as the current interface, and in addition, get 5826 * information about the interface types that are using the frequency. 5827 */ 5828int get_shared_radio_freqs_data(struct wpa_supplicant *wpa_s, 5829 struct wpa_used_freq_data *freqs_data, 5830 unsigned int len) 5831{ 5832 struct wpa_supplicant *ifs; 5833 u8 bssid[ETH_ALEN]; 5834 int freq; 5835 unsigned int idx = 0, i; 5836 5837 wpa_dbg(wpa_s, MSG_DEBUG, 5838 "Determining shared radio frequencies (max len %u)", len); 5839 os_memset(freqs_data, 0, sizeof(struct wpa_used_freq_data) * len); 5840 5841 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 5842 radio_list) { 5843 if (idx == len) 5844 break; 5845 5846 if (ifs->current_ssid == NULL || ifs->assoc_freq == 0) 5847 continue; 5848 5849 if (ifs->current_ssid->mode == WPAS_MODE_AP || 5850 ifs->current_ssid->mode == WPAS_MODE_P2P_GO || 5851 ifs->current_ssid->mode == WPAS_MODE_MESH) 5852 freq = ifs->current_ssid->frequency; 5853 else if (wpa_drv_get_bssid(ifs, bssid) == 0) 5854 freq = ifs->assoc_freq; 5855 else 5856 continue; 5857 5858 /* Hold only distinct freqs */ 5859 for (i = 0; i < idx; i++) 5860 if (freqs_data[i].freq == freq) 5861 break; 5862 5863 if (i == idx) 5864 freqs_data[idx++].freq = freq; 5865 5866 if (ifs->current_ssid->mode == WPAS_MODE_INFRA) { 5867 freqs_data[i].flags |= ifs->current_ssid->p2p_group ? 5868 WPA_FREQ_USED_BY_P2P_CLIENT : 5869 WPA_FREQ_USED_BY_INFRA_STATION; 5870 } 5871 } 5872 5873 dump_freq_data(wpa_s, "completed iteration", freqs_data, idx); 5874 return idx; 5875} 5876 5877 5878/* 5879 * Find the operating frequencies of any of the virtual interfaces that 5880 * are using the same radio as the current interface. 5881 */ 5882int get_shared_radio_freqs(struct wpa_supplicant *wpa_s, 5883 int *freq_array, unsigned int len) 5884{ 5885 struct wpa_used_freq_data *freqs_data; 5886 int num, i; 5887 5888 os_memset(freq_array, 0, sizeof(int) * len); 5889 5890 freqs_data = os_calloc(len, sizeof(struct wpa_used_freq_data)); 5891 if (!freqs_data) 5892 return -1; 5893 5894 num = get_shared_radio_freqs_data(wpa_s, freqs_data, len); 5895 for (i = 0; i < num; i++) 5896 freq_array[i] = freqs_data[i].freq; 5897 5898 os_free(freqs_data); 5899 5900 return num; 5901} 5902 5903 5904static void wpas_rrm_neighbor_rep_timeout_handler(void *data, void *user_ctx) 5905{ 5906 struct rrm_data *rrm = data; 5907 5908 if (!rrm->notify_neighbor_rep) { 5909 wpa_printf(MSG_ERROR, 5910 "RRM: Unexpected neighbor report timeout"); 5911 return; 5912 } 5913 5914 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report - NONE"); 5915 rrm->notify_neighbor_rep(rrm->neighbor_rep_cb_ctx, NULL); 5916 5917 rrm->notify_neighbor_rep = NULL; 5918 rrm->neighbor_rep_cb_ctx = NULL; 5919} 5920 5921 5922/* 5923 * wpas_rrm_reset - Clear and reset all RRM data in wpa_supplicant 5924 * @wpa_s: Pointer to wpa_supplicant 5925 */ 5926void wpas_rrm_reset(struct wpa_supplicant *wpa_s) 5927{ 5928 wpa_s->rrm.rrm_used = 0; 5929 5930 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm, 5931 NULL); 5932 if (wpa_s->rrm.notify_neighbor_rep) 5933 wpas_rrm_neighbor_rep_timeout_handler(&wpa_s->rrm, NULL); 5934 wpa_s->rrm.next_neighbor_rep_token = 1; 5935} 5936 5937 5938/* 5939 * wpas_rrm_process_neighbor_rep - Handle incoming neighbor report 5940 * @wpa_s: Pointer to wpa_supplicant 5941 * @report: Neighbor report buffer, prefixed by a 1-byte dialog token 5942 * @report_len: Length of neighbor report buffer 5943 */ 5944void wpas_rrm_process_neighbor_rep(struct wpa_supplicant *wpa_s, 5945 const u8 *report, size_t report_len) 5946{ 5947 struct wpabuf *neighbor_rep; 5948 5949 wpa_hexdump(MSG_DEBUG, "RRM: New Neighbor Report", report, report_len); 5950 if (report_len < 1) 5951 return; 5952 5953 if (report[0] != wpa_s->rrm.next_neighbor_rep_token - 1) { 5954 wpa_printf(MSG_DEBUG, 5955 "RRM: Discarding neighbor report with token %d (expected %d)", 5956 report[0], wpa_s->rrm.next_neighbor_rep_token - 1); 5957 return; 5958 } 5959 5960 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm, 5961 NULL); 5962 5963 if (!wpa_s->rrm.notify_neighbor_rep) { 5964 wpa_printf(MSG_ERROR, "RRM: Unexpected neighbor report"); 5965 return; 5966 } 5967 5968 /* skipping the first byte, which is only an id (dialog token) */ 5969 neighbor_rep = wpabuf_alloc(report_len - 1); 5970 if (neighbor_rep == NULL) 5971 return; 5972 wpabuf_put_data(neighbor_rep, report + 1, report_len - 1); 5973 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report (token = %d)", 5974 report[0]); 5975 wpa_s->rrm.notify_neighbor_rep(wpa_s->rrm.neighbor_rep_cb_ctx, 5976 neighbor_rep); 5977 wpa_s->rrm.notify_neighbor_rep = NULL; 5978 wpa_s->rrm.neighbor_rep_cb_ctx = NULL; 5979} 5980 5981 5982#if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS) 5983/* Workaround different, undefined for Windows, error codes used here */ 5984#define ENOTCONN -1 5985#define EOPNOTSUPP -1 5986#define ECANCELED -1 5987#endif 5988 5989/** 5990 * wpas_rrm_send_neighbor_rep_request - Request a neighbor report from our AP 5991 * @wpa_s: Pointer to wpa_supplicant 5992 * @ssid: if not null, this is sent in the request. Otherwise, no SSID IE 5993 * is sent in the request. 5994 * @cb: Callback function to be called once the requested report arrives, or 5995 * timed out after RRM_NEIGHBOR_REPORT_TIMEOUT seconds. 5996 * In the former case, 'neighbor_rep' is a newly allocated wpabuf, and it's 5997 * the requester's responsibility to free it. 5998 * In the latter case NULL will be sent in 'neighbor_rep'. 5999 * @cb_ctx: Context value to send the callback function 6000 * Returns: 0 in case of success, negative error code otherwise 6001 * 6002 * In case there is a previous request which has not been answered yet, the 6003 * new request fails. The caller may retry after RRM_NEIGHBOR_REPORT_TIMEOUT. 6004 * Request must contain a callback function. 6005 */ 6006int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s, 6007 const struct wpa_ssid *ssid, 6008 void (*cb)(void *ctx, 6009 struct wpabuf *neighbor_rep), 6010 void *cb_ctx) 6011{ 6012 struct wpabuf *buf; 6013 const u8 *rrm_ie; 6014 6015 if (wpa_s->wpa_state != WPA_COMPLETED || wpa_s->current_ssid == NULL) { 6016 wpa_printf(MSG_DEBUG, "RRM: No connection, no RRM."); 6017 return -ENOTCONN; 6018 } 6019 6020 if (!wpa_s->rrm.rrm_used) { 6021 wpa_printf(MSG_DEBUG, "RRM: No RRM in current connection."); 6022 return -EOPNOTSUPP; 6023 } 6024 6025 rrm_ie = wpa_bss_get_ie(wpa_s->current_bss, 6026 WLAN_EID_RRM_ENABLED_CAPABILITIES); 6027 if (!rrm_ie || !(wpa_s->current_bss->caps & IEEE80211_CAP_RRM) || 6028 !(rrm_ie[2] & WLAN_RRM_CAPS_NEIGHBOR_REPORT)) { 6029 wpa_printf(MSG_DEBUG, 6030 "RRM: No network support for Neighbor Report."); 6031 return -EOPNOTSUPP; 6032 } 6033 6034 if (!cb) { 6035 wpa_printf(MSG_DEBUG, 6036 "RRM: Neighbor Report request must provide a callback."); 6037 return -EINVAL; 6038 } 6039 6040 /* Refuse if there's a live request */ 6041 if (wpa_s->rrm.notify_neighbor_rep) { 6042 wpa_printf(MSG_DEBUG, 6043 "RRM: Currently handling previous Neighbor Report."); 6044 return -EBUSY; 6045 } 6046 6047 /* 3 = action category + action code + dialog token */ 6048 buf = wpabuf_alloc(3 + (ssid ? 2 + ssid->ssid_len : 0)); 6049 if (buf == NULL) { 6050 wpa_printf(MSG_DEBUG, 6051 "RRM: Failed to allocate Neighbor Report Request"); 6052 return -ENOMEM; 6053 } 6054 6055 wpa_printf(MSG_DEBUG, "RRM: Neighbor report request (for %s), token=%d", 6056 (ssid ? wpa_ssid_txt(ssid->ssid, ssid->ssid_len) : ""), 6057 wpa_s->rrm.next_neighbor_rep_token); 6058 6059 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); 6060 wpabuf_put_u8(buf, WLAN_RRM_NEIGHBOR_REPORT_REQUEST); 6061 wpabuf_put_u8(buf, wpa_s->rrm.next_neighbor_rep_token); 6062 if (ssid) { 6063 wpabuf_put_u8(buf, WLAN_EID_SSID); 6064 wpabuf_put_u8(buf, ssid->ssid_len); 6065 wpabuf_put_data(buf, ssid->ssid, ssid->ssid_len); 6066 } 6067 6068 wpa_s->rrm.next_neighbor_rep_token++; 6069 6070 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 6071 wpa_s->own_addr, wpa_s->bssid, 6072 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 6073 wpa_printf(MSG_DEBUG, 6074 "RRM: Failed to send Neighbor Report Request"); 6075 wpabuf_free(buf); 6076 return -ECANCELED; 6077 } 6078 6079 wpa_s->rrm.neighbor_rep_cb_ctx = cb_ctx; 6080 wpa_s->rrm.notify_neighbor_rep = cb; 6081 eloop_register_timeout(RRM_NEIGHBOR_REPORT_TIMEOUT, 0, 6082 wpas_rrm_neighbor_rep_timeout_handler, 6083 &wpa_s->rrm, NULL); 6084 6085 wpabuf_free(buf); 6086 return 0; 6087} 6088 6089 6090void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s, 6091 const u8 *src, 6092 const u8 *frame, size_t len, 6093 int rssi) 6094{ 6095 struct wpabuf *buf; 6096 const struct rrm_link_measurement_request *req; 6097 struct rrm_link_measurement_report report; 6098 6099 if (wpa_s->wpa_state != WPA_COMPLETED) { 6100 wpa_printf(MSG_INFO, 6101 "RRM: Ignoring link measurement request. Not associated"); 6102 return; 6103 } 6104 6105 if (!wpa_s->rrm.rrm_used) { 6106 wpa_printf(MSG_INFO, 6107 "RRM: Ignoring link measurement request. Not RRM network"); 6108 return; 6109 } 6110 6111 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) { 6112 wpa_printf(MSG_INFO, 6113 "RRM: Measurement report failed. TX power insertion not supported"); 6114 return; 6115 } 6116 6117 req = (const struct rrm_link_measurement_request *) frame; 6118 if (len < sizeof(*req)) { 6119 wpa_printf(MSG_INFO, 6120 "RRM: Link measurement report failed. Request too short"); 6121 return; 6122 } 6123 6124 os_memset(&report, 0, sizeof(report)); 6125 report.tpc.eid = WLAN_EID_TPC_REPORT; 6126 report.tpc.len = 2; 6127 report.rsni = 255; /* 255 indicates that RSNI is not available */ 6128 report.dialog_token = req->dialog_token; 6129 6130 /* 6131 * It's possible to estimate RCPI based on RSSI in dBm. This 6132 * calculation will not reflect the correct value for high rates, 6133 * but it's good enough for Action frames which are transmitted 6134 * with up to 24 Mbps rates. 6135 */ 6136 if (!rssi) 6137 report.rcpi = 255; /* not available */ 6138 else if (rssi < -110) 6139 report.rcpi = 0; 6140 else if (rssi > 0) 6141 report.rcpi = 220; 6142 else 6143 report.rcpi = (rssi + 110) * 2; 6144 6145 /* action_category + action_code */ 6146 buf = wpabuf_alloc(2 + sizeof(report)); 6147 if (buf == NULL) { 6148 wpa_printf(MSG_ERROR, 6149 "RRM: Link measurement report failed. Buffer allocation failed"); 6150 return; 6151 } 6152 6153 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); 6154 wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT); 6155 wpabuf_put_data(buf, &report, sizeof(report)); 6156 wpa_hexdump(MSG_DEBUG, "RRM: Link measurement report:", 6157 wpabuf_head(buf), wpabuf_len(buf)); 6158 6159 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src, 6160 wpa_s->own_addr, wpa_s->bssid, 6161 wpabuf_head(buf), wpabuf_len(buf), 0)) { 6162 wpa_printf(MSG_ERROR, 6163 "RRM: Link measurement report failed. Send action failed"); 6164 } 6165 wpabuf_free(buf); 6166} 6167 6168 6169struct wpa_supplicant * 6170wpas_vendor_elem(struct wpa_supplicant *wpa_s, enum wpa_vendor_elem_frame frame) 6171{ 6172 switch (frame) { 6173#ifdef CONFIG_P2P 6174 case VENDOR_ELEM_PROBE_REQ_P2P: 6175 case VENDOR_ELEM_PROBE_RESP_P2P: 6176 case VENDOR_ELEM_PROBE_RESP_P2P_GO: 6177 case VENDOR_ELEM_BEACON_P2P_GO: 6178 case VENDOR_ELEM_P2P_PD_REQ: 6179 case VENDOR_ELEM_P2P_PD_RESP: 6180 case VENDOR_ELEM_P2P_GO_NEG_REQ: 6181 case VENDOR_ELEM_P2P_GO_NEG_RESP: 6182 case VENDOR_ELEM_P2P_GO_NEG_CONF: 6183 case VENDOR_ELEM_P2P_INV_REQ: 6184 case VENDOR_ELEM_P2P_INV_RESP: 6185 case VENDOR_ELEM_P2P_ASSOC_REQ: 6186 case VENDOR_ELEM_P2P_ASSOC_RESP: 6187 return wpa_s->parent; 6188#endif /* CONFIG_P2P */ 6189 default: 6190 return wpa_s; 6191 } 6192} 6193 6194 6195void wpas_vendor_elem_update(struct wpa_supplicant *wpa_s) 6196{ 6197 unsigned int i; 6198 char buf[30]; 6199 6200 wpa_printf(MSG_DEBUG, "Update vendor elements"); 6201 6202 for (i = 0; i < NUM_VENDOR_ELEM_FRAMES; i++) { 6203 if (wpa_s->vendor_elem[i]) { 6204 int res; 6205 6206 res = os_snprintf(buf, sizeof(buf), "frame[%u]", i); 6207 if (!os_snprintf_error(sizeof(buf), res)) { 6208 wpa_hexdump_buf(MSG_DEBUG, buf, 6209 wpa_s->vendor_elem[i]); 6210 } 6211 } 6212 } 6213 6214#ifdef CONFIG_P2P 6215 if (wpa_s->parent == wpa_s && 6216 wpa_s->global->p2p && 6217 !wpa_s->global->p2p_disabled) 6218 p2p_set_vendor_elems(wpa_s->global->p2p, wpa_s->vendor_elem); 6219#endif /* CONFIG_P2P */ 6220} 6221 6222 6223int wpas_vendor_elem_remove(struct wpa_supplicant *wpa_s, int frame, 6224 const u8 *elem, size_t len) 6225{ 6226 u8 *ie, *end; 6227 6228 ie = wpabuf_mhead_u8(wpa_s->vendor_elem[frame]); 6229 end = ie + wpabuf_len(wpa_s->vendor_elem[frame]); 6230 6231 for (; ie + 1 < end; ie += 2 + ie[1]) { 6232 if (ie + len > end) 6233 break; 6234 if (os_memcmp(ie, elem, len) != 0) 6235 continue; 6236 6237 if (wpabuf_len(wpa_s->vendor_elem[frame]) == len) { 6238 wpabuf_free(wpa_s->vendor_elem[frame]); 6239 wpa_s->vendor_elem[frame] = NULL; 6240 } else { 6241 os_memmove(ie, ie + len, end - (ie + len)); 6242 wpa_s->vendor_elem[frame]->used -= len; 6243 } 6244 wpas_vendor_elem_update(wpa_s); 6245 return 0; 6246 } 6247 6248 return -1; 6249} 6250