1/* 2 * WPA Supplicant 3 * Copyright (c) 2003-2012, 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_server/eap_methods.h" 21#include "rsn_supp/wpa.h" 22#include "eloop.h" 23#include "config.h" 24#include "utils/ext_password.h" 25#include "l2_packet/l2_packet.h" 26#include "wpa_supplicant_i.h" 27#include "driver_i.h" 28#include "ctrl_iface.h" 29#include "pcsc_funcs.h" 30#include "common/version.h" 31#include "rsn_supp/preauth.h" 32#include "rsn_supp/pmksa_cache.h" 33#include "common/wpa_ctrl.h" 34#include "common/ieee802_11_defs.h" 35#include "p2p/p2p.h" 36#include "blacklist.h" 37#include "wpas_glue.h" 38#include "wps_supplicant.h" 39#include "ibss_rsn.h" 40#include "sme.h" 41#include "gas_query.h" 42#include "ap.h" 43#include "p2p_supplicant.h" 44#include "wifi_display.h" 45#include "notify.h" 46#include "bgscan.h" 47#include "autoscan.h" 48#include "bss.h" 49#include "scan.h" 50#include "offchannel.h" 51#include "hs20_supplicant.h" 52 53const char *wpa_supplicant_version = 54"wpa_supplicant v" VERSION_STR "\n" 55"Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi> and contributors"; 56 57const char *wpa_supplicant_license = 58"This software may be distributed under the terms of the BSD license.\n" 59"See README for more details.\n" 60#ifdef EAP_TLS_OPENSSL 61"\nThis product includes software developed by the OpenSSL Project\n" 62"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n" 63#endif /* EAP_TLS_OPENSSL */ 64; 65 66#ifndef CONFIG_NO_STDOUT_DEBUG 67/* Long text divided into parts in order to fit in C89 strings size limits. */ 68const char *wpa_supplicant_full_license1 = 69""; 70const char *wpa_supplicant_full_license2 = 71"This software may be distributed under the terms of the BSD license.\n" 72"\n" 73"Redistribution and use in source and binary forms, with or without\n" 74"modification, are permitted provided that the following conditions are\n" 75"met:\n" 76"\n"; 77const char *wpa_supplicant_full_license3 = 78"1. Redistributions of source code must retain the above copyright\n" 79" notice, this list of conditions and the following disclaimer.\n" 80"\n" 81"2. Redistributions in binary form must reproduce the above copyright\n" 82" notice, this list of conditions and the following disclaimer in the\n" 83" documentation and/or other materials provided with the distribution.\n" 84"\n"; 85const char *wpa_supplicant_full_license4 = 86"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n" 87" names of its contributors may be used to endorse or promote products\n" 88" derived from this software without specific prior written permission.\n" 89"\n" 90"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n" 91"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n" 92"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n" 93"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"; 94const char *wpa_supplicant_full_license5 = 95"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" 96"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" 97"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n" 98"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n" 99"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" 100"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n" 101"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" 102"\n"; 103#endif /* CONFIG_NO_STDOUT_DEBUG */ 104 105extern int wpa_debug_level; 106extern int wpa_debug_show_keys; 107extern int wpa_debug_timestamp; 108extern struct wpa_driver_ops *wpa_drivers[]; 109 110/* Configure default/group WEP keys for static WEP */ 111int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 112{ 113 int i, set = 0; 114 115 for (i = 0; i < NUM_WEP_KEYS; i++) { 116 if (ssid->wep_key_len[i] == 0) 117 continue; 118 119 set = 1; 120 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL, 121 i, i == ssid->wep_tx_keyidx, NULL, 0, 122 ssid->wep_key[i], ssid->wep_key_len[i]); 123 } 124 125 return set; 126} 127 128 129static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s, 130 struct wpa_ssid *ssid) 131{ 132 u8 key[32]; 133 size_t keylen; 134 enum wpa_alg alg; 135 u8 seq[6] = { 0 }; 136 137 /* IBSS/WPA-None uses only one key (Group) for both receiving and 138 * sending unicast and multicast packets. */ 139 140 if (ssid->mode != WPAS_MODE_IBSS) { 141 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not " 142 "IBSS/ad-hoc) for WPA-None", ssid->mode); 143 return -1; 144 } 145 146 if (!ssid->psk_set) { 147 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for " 148 "WPA-None"); 149 return -1; 150 } 151 152 switch (wpa_s->group_cipher) { 153 case WPA_CIPHER_CCMP: 154 os_memcpy(key, ssid->psk, 16); 155 keylen = 16; 156 alg = WPA_ALG_CCMP; 157 break; 158 case WPA_CIPHER_GCMP: 159 os_memcpy(key, ssid->psk, 16); 160 keylen = 16; 161 alg = WPA_ALG_GCMP; 162 break; 163 case WPA_CIPHER_TKIP: 164 /* WPA-None uses the same Michael MIC key for both TX and RX */ 165 os_memcpy(key, ssid->psk, 16 + 8); 166 os_memcpy(key + 16 + 8, ssid->psk + 16, 8); 167 keylen = 32; 168 alg = WPA_ALG_TKIP; 169 break; 170 default: 171 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for " 172 "WPA-None", wpa_s->group_cipher); 173 return -1; 174 } 175 176 /* TODO: should actually remember the previously used seq#, both for TX 177 * and RX from each STA.. */ 178 179 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen); 180} 181 182 183static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx) 184{ 185 struct wpa_supplicant *wpa_s = eloop_ctx; 186 const u8 *bssid = wpa_s->bssid; 187 if (is_zero_ether_addr(bssid)) 188 bssid = wpa_s->pending_bssid; 189 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.", 190 MAC2STR(bssid)); 191 wpa_blacklist_add(wpa_s, bssid); 192 wpa_sm_notify_disassoc(wpa_s->wpa); 193 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 194 wpa_s->reassociate = 1; 195 196 /* 197 * If we timed out, the AP or the local radio may be busy. 198 * So, wait a second until scanning again. 199 */ 200 wpa_supplicant_req_scan(wpa_s, 1, 0); 201 202#ifdef CONFIG_P2P 203 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 204 wpa_s->global->p2p != NULL) { 205 wpa_s->global->p2p_cb_on_scan_complete = 0; 206 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 207 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 208 "continued after timed out authentication"); 209 } 210 } 211#endif /* CONFIG_P2P */ 212} 213 214 215/** 216 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication 217 * @wpa_s: Pointer to wpa_supplicant data 218 * @sec: Number of seconds after which to time out authentication 219 * @usec: Number of microseconds after which to time out authentication 220 * 221 * This function is used to schedule a timeout for the current authentication 222 * attempt. 223 */ 224void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s, 225 int sec, int usec) 226{ 227 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 && 228 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 229 return; 230 231 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec " 232 "%d usec", sec, usec); 233 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 234 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL); 235} 236 237 238/** 239 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout 240 * @wpa_s: Pointer to wpa_supplicant data 241 * 242 * This function is used to cancel authentication timeout scheduled with 243 * wpa_supplicant_req_auth_timeout() and it is called when authentication has 244 * been completed. 245 */ 246void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s) 247{ 248 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout"); 249 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 250 wpa_blacklist_del(wpa_s, wpa_s->bssid); 251} 252 253 254/** 255 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine 256 * @wpa_s: Pointer to wpa_supplicant data 257 * 258 * This function is used to configure EAPOL state machine based on the selected 259 * authentication mode. 260 */ 261void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s) 262{ 263#ifdef IEEE8021X_EAPOL 264 struct eapol_config eapol_conf; 265 struct wpa_ssid *ssid = wpa_s->current_ssid; 266 267#ifdef CONFIG_IBSS_RSN 268 if (ssid->mode == WPAS_MODE_IBSS && 269 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 270 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 271 /* 272 * RSN IBSS authentication is per-STA and we can disable the 273 * per-BSSID EAPOL authentication. 274 */ 275 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 276 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 277 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 278 return; 279 } 280#endif /* CONFIG_IBSS_RSN */ 281 282 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 283 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 284 285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 286 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 287 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 288 else 289 eapol_sm_notify_portControl(wpa_s->eapol, Auto); 290 291 os_memset(&eapol_conf, 0, sizeof(eapol_conf)); 292 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 293 eapol_conf.accept_802_1x_keys = 1; 294 eapol_conf.required_keys = 0; 295 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) { 296 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST; 297 } 298 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) { 299 eapol_conf.required_keys |= 300 EAPOL_REQUIRE_KEY_BROADCAST; 301 } 302 303 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 304 eapol_conf.required_keys = 0; 305 } 306 if (wpa_s->conf) 307 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth; 308 eapol_conf.workaround = ssid->eap_workaround; 309 eapol_conf.eap_disabled = 310 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) && 311 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA && 312 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS; 313 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf); 314#endif /* IEEE8021X_EAPOL */ 315} 316 317 318/** 319 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode 320 * @wpa_s: Pointer to wpa_supplicant data 321 * @ssid: Configuration data for the network 322 * 323 * This function is used to configure WPA state machine and related parameters 324 * to a mode where WPA is not enabled. This is called as part of the 325 * authentication configuration when the selected network does not use WPA. 326 */ 327void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s, 328 struct wpa_ssid *ssid) 329{ 330 int i; 331 332 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 333 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS; 334 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) 335 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 336 else 337 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE; 338 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 339 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 340 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 341 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 342 wpa_s->group_cipher = WPA_CIPHER_NONE; 343 wpa_s->mgmt_group_cipher = 0; 344 345 for (i = 0; i < NUM_WEP_KEYS; i++) { 346 if (ssid->wep_key_len[i] > 5) { 347 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104; 348 wpa_s->group_cipher = WPA_CIPHER_WEP104; 349 break; 350 } else if (ssid->wep_key_len[i] > 0) { 351 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40; 352 wpa_s->group_cipher = WPA_CIPHER_WEP40; 353 break; 354 } 355 } 356 357 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0); 358 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 360 wpa_s->pairwise_cipher); 361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 362#ifdef CONFIG_IEEE80211W 363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 364 wpa_s->mgmt_group_cipher); 365#endif /* CONFIG_IEEE80211W */ 366 367 pmksa_cache_clear_current(wpa_s->wpa); 368} 369 370 371void free_hw_features(struct wpa_supplicant *wpa_s) 372{ 373 int i; 374 if (wpa_s->hw.modes == NULL) 375 return; 376 377 for (i = 0; i < wpa_s->hw.num_modes; i++) { 378 os_free(wpa_s->hw.modes[i].channels); 379 os_free(wpa_s->hw.modes[i].rates); 380 } 381 382 os_free(wpa_s->hw.modes); 383 wpa_s->hw.modes = NULL; 384} 385 386 387static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s) 388{ 389 bgscan_deinit(wpa_s); 390 autoscan_deinit(wpa_s); 391 scard_deinit(wpa_s->scard); 392 wpa_s->scard = NULL; 393 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL); 394 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL); 395 l2_packet_deinit(wpa_s->l2); 396 wpa_s->l2 = NULL; 397 if (wpa_s->l2_br) { 398 l2_packet_deinit(wpa_s->l2_br); 399 wpa_s->l2_br = NULL; 400 } 401 402 if (wpa_s->conf != NULL) { 403 struct wpa_ssid *ssid; 404 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 405 wpas_notify_network_removed(wpa_s, ssid); 406 } 407 408 os_free(wpa_s->confname); 409 wpa_s->confname = NULL; 410 411 wpa_sm_set_eapol(wpa_s->wpa, NULL); 412 eapol_sm_deinit(wpa_s->eapol); 413 wpa_s->eapol = NULL; 414 415 rsn_preauth_deinit(wpa_s->wpa); 416 417#ifdef CONFIG_TDLS 418 wpa_tdls_deinit(wpa_s->wpa); 419#endif /* CONFIG_TDLS */ 420 421 pmksa_candidate_free(wpa_s->wpa); 422 wpa_sm_deinit(wpa_s->wpa); 423 wpa_s->wpa = NULL; 424 wpa_blacklist_clear(wpa_s); 425 426 wpa_bss_deinit(wpa_s); 427 428 wpa_supplicant_cancel_scan(wpa_s); 429 wpa_supplicant_cancel_auth_timeout(wpa_s); 430 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL); 431#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 432 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report, 433 wpa_s, NULL); 434#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 435 436 wpas_wps_deinit(wpa_s); 437 438 wpabuf_free(wpa_s->pending_eapol_rx); 439 wpa_s->pending_eapol_rx = NULL; 440 441#ifdef CONFIG_IBSS_RSN 442 ibss_rsn_deinit(wpa_s->ibss_rsn); 443 wpa_s->ibss_rsn = NULL; 444#endif /* CONFIG_IBSS_RSN */ 445 446 sme_deinit(wpa_s); 447 448#ifdef CONFIG_AP 449 wpa_supplicant_ap_deinit(wpa_s); 450#endif /* CONFIG_AP */ 451 452#ifdef CONFIG_P2P 453 wpas_p2p_deinit(wpa_s); 454#endif /* CONFIG_P2P */ 455 456#ifdef CONFIG_OFFCHANNEL 457 offchannel_deinit(wpa_s); 458#endif /* CONFIG_OFFCHANNEL */ 459 460 wpa_supplicant_cancel_sched_scan(wpa_s); 461 462 os_free(wpa_s->next_scan_freqs); 463 wpa_s->next_scan_freqs = NULL; 464 465 gas_query_deinit(wpa_s->gas); 466 wpa_s->gas = NULL; 467 468 free_hw_features(wpa_s); 469 470 os_free(wpa_s->bssid_filter); 471 wpa_s->bssid_filter = NULL; 472 473 os_free(wpa_s->disallow_aps_bssid); 474 wpa_s->disallow_aps_bssid = NULL; 475 os_free(wpa_s->disallow_aps_ssid); 476 wpa_s->disallow_aps_ssid = NULL; 477 478 wnm_bss_keep_alive_deinit(wpa_s); 479 480 ext_password_deinit(wpa_s->ext_pw); 481 wpa_s->ext_pw = NULL; 482 483 wpabuf_free(wpa_s->last_gas_resp); 484 485 os_free(wpa_s->last_scan_res); 486 wpa_s->last_scan_res = NULL; 487} 488 489 490/** 491 * wpa_clear_keys - Clear keys configured for the driver 492 * @wpa_s: Pointer to wpa_supplicant data 493 * @addr: Previously used BSSID or %NULL if not available 494 * 495 * This function clears the encryption keys that has been previously configured 496 * for the driver. 497 */ 498void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr) 499{ 500 if (wpa_s->keys_cleared) { 501 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have 502 * timing issues with keys being cleared just before new keys 503 * are set or just after association or something similar. This 504 * shows up in group key handshake failing often because of the 505 * client not receiving the first encrypted packets correctly. 506 * Skipping some of the extra key clearing steps seems to help 507 * in completing group key handshake more reliably. */ 508 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - " 509 "skip key clearing"); 510 return; 511 } 512 513 /* MLME-DELETEKEYS.request */ 514 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0); 515 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0); 516 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0); 517 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0); 518#ifdef CONFIG_IEEE80211W 519 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0); 520 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0); 521#endif /* CONFIG_IEEE80211W */ 522 if (addr) { 523 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL, 524 0); 525 /* MLME-SETPROTECTION.request(None) */ 526 wpa_drv_mlme_setprotection( 527 wpa_s, addr, 528 MLME_SETPROTECTION_PROTECT_TYPE_NONE, 529 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); 530 } 531 wpa_s->keys_cleared = 1; 532} 533 534 535/** 536 * wpa_supplicant_state_txt - Get the connection state name as a text string 537 * @state: State (wpa_state; WPA_*) 538 * Returns: The state name as a printable text string 539 */ 540const char * wpa_supplicant_state_txt(enum wpa_states state) 541{ 542 switch (state) { 543 case WPA_DISCONNECTED: 544 return "DISCONNECTED"; 545 case WPA_INACTIVE: 546 return "INACTIVE"; 547 case WPA_INTERFACE_DISABLED: 548 return "INTERFACE_DISABLED"; 549 case WPA_SCANNING: 550 return "SCANNING"; 551 case WPA_AUTHENTICATING: 552 return "AUTHENTICATING"; 553 case WPA_ASSOCIATING: 554 return "ASSOCIATING"; 555 case WPA_ASSOCIATED: 556 return "ASSOCIATED"; 557 case WPA_4WAY_HANDSHAKE: 558 return "4WAY_HANDSHAKE"; 559 case WPA_GROUP_HANDSHAKE: 560 return "GROUP_HANDSHAKE"; 561 case WPA_COMPLETED: 562 return "COMPLETED"; 563 default: 564 return "UNKNOWN"; 565 } 566} 567 568 569#ifdef CONFIG_BGSCAN 570 571static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s) 572{ 573 if (wpas_driver_bss_selection(wpa_s)) 574 return; 575 if (wpa_s->current_ssid == wpa_s->bgscan_ssid) 576 return; 577 578 bgscan_deinit(wpa_s); 579 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) { 580 if (bgscan_init(wpa_s, wpa_s->current_ssid)) { 581 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 582 "bgscan"); 583 /* 584 * Live without bgscan; it is only used as a roaming 585 * optimization, so the initial connection is not 586 * affected. 587 */ 588 } else { 589 struct wpa_scan_results *scan_res; 590 wpa_s->bgscan_ssid = wpa_s->current_ssid; 591 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 592 0); 593 if (scan_res) { 594 bgscan_notify_scan(wpa_s, scan_res); 595 wpa_scan_results_free(scan_res); 596 } 597 } 598 } else 599 wpa_s->bgscan_ssid = NULL; 600} 601 602 603static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s) 604{ 605 if (wpa_s->bgscan_ssid != NULL) { 606 bgscan_deinit(wpa_s); 607 wpa_s->bgscan_ssid = NULL; 608 } 609} 610 611#endif /* CONFIG_BGSCAN */ 612 613 614static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s) 615{ 616 if (autoscan_init(wpa_s, 0)) 617 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan"); 618} 619 620 621static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s) 622{ 623 autoscan_deinit(wpa_s); 624} 625 626 627void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s) 628{ 629 if (wpa_s->wpa_state == WPA_DISCONNECTED || 630 wpa_s->wpa_state == WPA_SCANNING) { 631 autoscan_deinit(wpa_s); 632 wpa_supplicant_start_autoscan(wpa_s); 633 } 634} 635 636 637/** 638 * wpa_supplicant_set_state - Set current connection state 639 * @wpa_s: Pointer to wpa_supplicant data 640 * @state: The new connection state 641 * 642 * This function is called whenever the connection state changes, e.g., 643 * association is completed for WPA/WPA2 4-Way Handshake is started. 644 */ 645void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, 646 enum wpa_states state) 647{ 648 enum wpa_states old_state = wpa_s->wpa_state; 649 650 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s", 651 wpa_supplicant_state_txt(wpa_s->wpa_state), 652 wpa_supplicant_state_txt(state)); 653 654 if (state != WPA_SCANNING) 655 wpa_supplicant_notify_scanning(wpa_s, 0); 656 657 if (state == WPA_COMPLETED && wpa_s->new_connection) { 658#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 659 struct wpa_ssid *ssid = wpa_s->current_ssid; 660 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to " 661 MACSTR " completed [id=%d id_str=%s]", 662 MAC2STR(wpa_s->bssid), 663 ssid ? ssid->id : -1, 664 ssid && ssid->id_str ? ssid->id_str : ""); 665#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 666 wpas_clear_temp_disabled(wpa_s, ssid, 1); 667 wpa_s->extra_blacklist_count = 0; 668 wpa_s->new_connection = 0; 669 wpa_drv_set_operstate(wpa_s, 1); 670#ifndef IEEE8021X_EAPOL 671 wpa_drv_set_supp_port(wpa_s, 1); 672#endif /* IEEE8021X_EAPOL */ 673 wpa_s->after_wps = 0; 674#ifdef CONFIG_P2P 675 wpas_p2p_completed(wpa_s); 676#endif /* CONFIG_P2P */ 677 678 sme_sched_obss_scan(wpa_s, 1); 679 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING || 680 state == WPA_ASSOCIATED) { 681 wpa_s->new_connection = 1; 682 wpa_drv_set_operstate(wpa_s, 0); 683#ifndef IEEE8021X_EAPOL 684 wpa_drv_set_supp_port(wpa_s, 0); 685#endif /* IEEE8021X_EAPOL */ 686 sme_sched_obss_scan(wpa_s, 0); 687 } 688 wpa_s->wpa_state = state; 689 690#ifdef CONFIG_BGSCAN 691 if (state == WPA_COMPLETED) 692 wpa_supplicant_start_bgscan(wpa_s); 693 else 694 wpa_supplicant_stop_bgscan(wpa_s); 695#endif /* CONFIG_BGSCAN */ 696 697 if (state == WPA_AUTHENTICATING) 698 wpa_supplicant_stop_autoscan(wpa_s); 699 700 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE) 701 wpa_supplicant_start_autoscan(wpa_s); 702 703 if (wpa_s->wpa_state != old_state) { 704 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 705 706 if (wpa_s->wpa_state == WPA_COMPLETED || 707 old_state == WPA_COMPLETED) 708 wpas_notify_auth_changed(wpa_s); 709 } 710} 711 712 713void wpa_supplicant_terminate_proc(struct wpa_global *global) 714{ 715 int pending = 0; 716#ifdef CONFIG_WPS 717 struct wpa_supplicant *wpa_s = global->ifaces; 718 while (wpa_s) { 719 if (wpas_wps_terminate_pending(wpa_s) == 1) 720 pending = 1; 721 wpa_s = wpa_s->next; 722 } 723#endif /* CONFIG_WPS */ 724 if (pending) 725 return; 726 eloop_terminate(); 727} 728 729 730static void wpa_supplicant_terminate(int sig, void *signal_ctx) 731{ 732 struct wpa_global *global = signal_ctx; 733 wpa_supplicant_terminate_proc(global); 734} 735 736 737void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s) 738{ 739 enum wpa_states old_state = wpa_s->wpa_state; 740 741 wpa_s->pairwise_cipher = 0; 742 wpa_s->group_cipher = 0; 743 wpa_s->mgmt_group_cipher = 0; 744 wpa_s->key_mgmt = 0; 745 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED) 746 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 747 748 if (wpa_s->wpa_state != old_state) 749 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 750} 751 752 753/** 754 * wpa_supplicant_reload_configuration - Reload configuration data 755 * @wpa_s: Pointer to wpa_supplicant data 756 * Returns: 0 on success or -1 if configuration parsing failed 757 * 758 * This function can be used to request that the configuration data is reloaded 759 * (e.g., after configuration file change). This function is reloading 760 * configuration only for one interface, so this may need to be called multiple 761 * times if %wpa_supplicant is controlling multiple interfaces and all 762 * interfaces need reconfiguration. 763 */ 764int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s) 765{ 766 struct wpa_config *conf; 767 int reconf_ctrl; 768 int old_ap_scan; 769 770 if (wpa_s->confname == NULL) 771 return -1; 772 conf = wpa_config_read(wpa_s->confname); 773 if (conf == NULL) { 774 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration " 775 "file '%s' - exiting", wpa_s->confname); 776 return -1; 777 } 778 conf->changed_parameters = (unsigned int) -1; 779 780 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface 781 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface && 782 os_strcmp(conf->ctrl_interface, 783 wpa_s->conf->ctrl_interface) != 0); 784 785 if (reconf_ctrl && wpa_s->ctrl_iface) { 786 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 787 wpa_s->ctrl_iface = NULL; 788 } 789 790 eapol_sm_invalidate_cached_session(wpa_s->eapol); 791 if (wpa_s->current_ssid) { 792 wpa_supplicant_deauthenticate(wpa_s, 793 WLAN_REASON_DEAUTH_LEAVING); 794 } 795 796 /* 797 * TODO: should notify EAPOL SM about changes in opensc_engine_path, 798 * pkcs11_engine_path, pkcs11_module_path. 799 */ 800 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 801 /* 802 * Clear forced success to clear EAP state for next 803 * authentication. 804 */ 805 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 806 } 807 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 808 wpa_sm_set_config(wpa_s->wpa, NULL); 809 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL); 810 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 811 rsn_preauth_deinit(wpa_s->wpa); 812 813 old_ap_scan = wpa_s->conf->ap_scan; 814 wpa_config_free(wpa_s->conf); 815 wpa_s->conf = conf; 816 if (old_ap_scan != wpa_s->conf->ap_scan) 817 wpas_notify_ap_scan_changed(wpa_s); 818 819 if (reconf_ctrl) 820 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 821 822 wpa_supplicant_update_config(wpa_s); 823 824 wpa_supplicant_clear_status(wpa_s); 825 if (wpa_supplicant_enabled_networks(wpa_s)) { 826 wpa_s->reassociate = 1; 827 wpa_supplicant_req_scan(wpa_s, 0, 0); 828 } 829 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed"); 830 return 0; 831} 832 833 834static void wpa_supplicant_reconfig(int sig, void *signal_ctx) 835{ 836 struct wpa_global *global = signal_ctx; 837 struct wpa_supplicant *wpa_s; 838 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 839 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring", 840 sig); 841 if (wpa_supplicant_reload_configuration(wpa_s) < 0) { 842 wpa_supplicant_terminate_proc(global); 843 } 844 } 845} 846 847 848enum wpa_cipher cipher_suite2driver(int cipher) 849{ 850 switch (cipher) { 851 case WPA_CIPHER_NONE: 852 return CIPHER_NONE; 853 case WPA_CIPHER_WEP40: 854 return CIPHER_WEP40; 855 case WPA_CIPHER_WEP104: 856 return CIPHER_WEP104; 857 case WPA_CIPHER_CCMP: 858 return CIPHER_CCMP; 859 case WPA_CIPHER_GCMP: 860 return CIPHER_GCMP; 861 case WPA_CIPHER_TKIP: 862 default: 863 return CIPHER_TKIP; 864 } 865} 866 867 868enum wpa_key_mgmt key_mgmt2driver(int key_mgmt) 869{ 870 switch (key_mgmt) { 871 case WPA_KEY_MGMT_NONE: 872 return KEY_MGMT_NONE; 873 case WPA_KEY_MGMT_IEEE8021X_NO_WPA: 874 return KEY_MGMT_802_1X_NO_WPA; 875 case WPA_KEY_MGMT_IEEE8021X: 876 return KEY_MGMT_802_1X; 877 case WPA_KEY_MGMT_WPA_NONE: 878 return KEY_MGMT_WPA_NONE; 879 case WPA_KEY_MGMT_FT_IEEE8021X: 880 return KEY_MGMT_FT_802_1X; 881 case WPA_KEY_MGMT_FT_PSK: 882 return KEY_MGMT_FT_PSK; 883 case WPA_KEY_MGMT_IEEE8021X_SHA256: 884 return KEY_MGMT_802_1X_SHA256; 885 case WPA_KEY_MGMT_PSK_SHA256: 886 return KEY_MGMT_PSK_SHA256; 887 case WPA_KEY_MGMT_WPS: 888 return KEY_MGMT_WPS; 889 case WPA_KEY_MGMT_PSK: 890 default: 891 return KEY_MGMT_PSK; 892 } 893} 894 895 896static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s, 897 struct wpa_ssid *ssid, 898 struct wpa_ie_data *ie) 899{ 900 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie); 901 if (ret) { 902 if (ret == -2) { 903 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE " 904 "from association info"); 905 } 906 return -1; 907 } 908 909 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set " 910 "cipher suites"); 911 if (!(ie->group_cipher & ssid->group_cipher)) { 912 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group " 913 "cipher 0x%x (mask 0x%x) - reject", 914 ie->group_cipher, ssid->group_cipher); 915 return -1; 916 } 917 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) { 918 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise " 919 "cipher 0x%x (mask 0x%x) - reject", 920 ie->pairwise_cipher, ssid->pairwise_cipher); 921 return -1; 922 } 923 if (!(ie->key_mgmt & ssid->key_mgmt)) { 924 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key " 925 "management 0x%x (mask 0x%x) - reject", 926 ie->key_mgmt, ssid->key_mgmt); 927 return -1; 928 } 929 930#ifdef CONFIG_IEEE80211W 931 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) && 932 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 933 wpa_s->conf->pmf : ssid->ieee80211w) == 934 MGMT_FRAME_PROTECTION_REQUIRED) { 935 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP " 936 "that does not support management frame protection - " 937 "reject"); 938 return -1; 939 } 940#endif /* CONFIG_IEEE80211W */ 941 942 return 0; 943} 944 945 946/** 947 * wpa_supplicant_set_suites - Set authentication and encryption parameters 948 * @wpa_s: Pointer to wpa_supplicant data 949 * @bss: Scan results for the selected BSS, or %NULL if not available 950 * @ssid: Configuration data for the selected network 951 * @wpa_ie: Buffer for the WPA/RSN IE 952 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the 953 * used buffer length in case the functions returns success. 954 * Returns: 0 on success or -1 on failure 955 * 956 * This function is used to configure authentication and encryption parameters 957 * based on the network configuration and scan result for the selected BSS (if 958 * available). 959 */ 960int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s, 961 struct wpa_bss *bss, struct wpa_ssid *ssid, 962 u8 *wpa_ie, size_t *wpa_ie_len) 963{ 964 struct wpa_ie_data ie; 965 int sel, proto; 966 const u8 *bss_wpa, *bss_rsn; 967 968 if (bss) { 969 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 970 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 971 } else 972 bss_wpa = bss_rsn = NULL; 973 974 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) && 975 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 && 976 (ie.group_cipher & ssid->group_cipher) && 977 (ie.pairwise_cipher & ssid->pairwise_cipher) && 978 (ie.key_mgmt & ssid->key_mgmt)) { 979 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0"); 980 proto = WPA_PROTO_RSN; 981 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) && 982 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 && 983 (ie.group_cipher & ssid->group_cipher) && 984 (ie.pairwise_cipher & ssid->pairwise_cipher) && 985 (ie.key_mgmt & ssid->key_mgmt)) { 986 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0"); 987 proto = WPA_PROTO_WPA; 988 } else if (bss) { 989 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN"); 990 return -1; 991 } else { 992 if (ssid->proto & WPA_PROTO_RSN) 993 proto = WPA_PROTO_RSN; 994 else 995 proto = WPA_PROTO_WPA; 996 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) { 997 os_memset(&ie, 0, sizeof(ie)); 998 ie.group_cipher = ssid->group_cipher; 999 ie.pairwise_cipher = ssid->pairwise_cipher; 1000 ie.key_mgmt = ssid->key_mgmt; 1001#ifdef CONFIG_IEEE80211W 1002 ie.mgmt_group_cipher = 1003 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ? 1004 WPA_CIPHER_AES_128_CMAC : 0; 1005#endif /* CONFIG_IEEE80211W */ 1006 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites " 1007 "based on configuration"); 1008 } else 1009 proto = ie.proto; 1010 } 1011 1012 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d " 1013 "pairwise %d key_mgmt %d proto %d", 1014 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto); 1015#ifdef CONFIG_IEEE80211W 1016 if (ssid->ieee80211w) { 1017 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d", 1018 ie.mgmt_group_cipher); 1019 } 1020#endif /* CONFIG_IEEE80211W */ 1021 1022 wpa_s->wpa_proto = proto; 1023 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto); 1024 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 1025 !!(ssid->proto & WPA_PROTO_RSN)); 1026 1027 if (bss || !wpa_s->ap_ies_from_associnfo) { 1028 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 1029 bss_wpa ? 2 + bss_wpa[1] : 0) || 1030 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 1031 bss_rsn ? 2 + bss_rsn[1] : 0)) 1032 return -1; 1033 } 1034 1035 sel = ie.group_cipher & ssid->group_cipher; 1036 if (sel & WPA_CIPHER_CCMP) { 1037 wpa_s->group_cipher = WPA_CIPHER_CCMP; 1038 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP"); 1039 } else if (sel & WPA_CIPHER_GCMP) { 1040 wpa_s->group_cipher = WPA_CIPHER_GCMP; 1041 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK GCMP"); 1042 } else if (sel & WPA_CIPHER_TKIP) { 1043 wpa_s->group_cipher = WPA_CIPHER_TKIP; 1044 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP"); 1045 } else if (sel & WPA_CIPHER_WEP104) { 1046 wpa_s->group_cipher = WPA_CIPHER_WEP104; 1047 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104"); 1048 } else if (sel & WPA_CIPHER_WEP40) { 1049 wpa_s->group_cipher = WPA_CIPHER_WEP40; 1050 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40"); 1051 } else { 1052 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group " 1053 "cipher"); 1054 return -1; 1055 } 1056 1057 sel = ie.pairwise_cipher & ssid->pairwise_cipher; 1058 if (sel & WPA_CIPHER_CCMP) { 1059 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP; 1060 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP"); 1061 } else if (sel & WPA_CIPHER_GCMP) { 1062 wpa_s->pairwise_cipher = WPA_CIPHER_GCMP; 1063 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK GCMP"); 1064 } else if (sel & WPA_CIPHER_TKIP) { 1065 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP; 1066 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP"); 1067 } else if (sel & WPA_CIPHER_NONE) { 1068 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 1069 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE"); 1070 } else { 1071 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise " 1072 "cipher"); 1073 return -1; 1074 } 1075 1076 sel = ie.key_mgmt & ssid->key_mgmt; 1077#ifdef CONFIG_SAE 1078 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE)) 1079 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE); 1080#endif /* CONFIG_SAE */ 1081 if (0) { 1082#ifdef CONFIG_IEEE80211R 1083 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) { 1084 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; 1085 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X"); 1086 } else if (sel & WPA_KEY_MGMT_FT_PSK) { 1087 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK; 1088 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK"); 1089#endif /* CONFIG_IEEE80211R */ 1090#ifdef CONFIG_SAE 1091 } else if (sel & WPA_KEY_MGMT_SAE) { 1092 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE; 1093 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE"); 1094 } else if (sel & WPA_KEY_MGMT_FT_SAE) { 1095 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE; 1096 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE"); 1097#endif /* CONFIG_SAE */ 1098#ifdef CONFIG_IEEE80211W 1099 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) { 1100 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; 1101 wpa_dbg(wpa_s, MSG_DEBUG, 1102 "WPA: using KEY_MGMT 802.1X with SHA256"); 1103 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) { 1104 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256; 1105 wpa_dbg(wpa_s, MSG_DEBUG, 1106 "WPA: using KEY_MGMT PSK with SHA256"); 1107#endif /* CONFIG_IEEE80211W */ 1108 } else if (sel & WPA_KEY_MGMT_IEEE8021X) { 1109 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 1110 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X"); 1111 } else if (sel & WPA_KEY_MGMT_PSK) { 1112 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK; 1113 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK"); 1114 } else if (sel & WPA_KEY_MGMT_WPA_NONE) { 1115 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE; 1116 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE"); 1117 } else { 1118 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select " 1119 "authenticated key management type"); 1120 return -1; 1121 } 1122 1123 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 1124 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 1125 wpa_s->pairwise_cipher); 1126 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 1127 1128#ifdef CONFIG_IEEE80211W 1129 sel = ie.mgmt_group_cipher; 1130 if ((ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 1131 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION || 1132 !(ie.capabilities & WPA_CAPABILITY_MFPC)) 1133 sel = 0; 1134 if (sel & WPA_CIPHER_AES_128_CMAC) { 1135 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 1136 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1137 "AES-128-CMAC"); 1138 } else { 1139 wpa_s->mgmt_group_cipher = 0; 1140 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher"); 1141 } 1142 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 1143 wpa_s->mgmt_group_cipher); 1144 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, 1145 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 1146 wpa_s->conf->pmf : ssid->ieee80211w)); 1147#endif /* CONFIG_IEEE80211W */ 1148 1149 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) { 1150 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE"); 1151 return -1; 1152 } 1153 1154 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) { 1155 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN); 1156#ifndef CONFIG_NO_PBKDF2 1157 if (bss && ssid->bssid_set && ssid->ssid_len == 0 && 1158 ssid->passphrase) { 1159 u8 psk[PMK_LEN]; 1160 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len, 1161 4096, psk, PMK_LEN); 1162 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 1163 psk, PMK_LEN); 1164 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1165 } 1166#endif /* CONFIG_NO_PBKDF2 */ 1167#ifdef CONFIG_EXT_PASSWORD 1168 if (ssid->ext_psk) { 1169 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw, 1170 ssid->ext_psk); 1171 char pw_str[64 + 1]; 1172 u8 psk[PMK_LEN]; 1173 1174 if (pw == NULL) { 1175 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK " 1176 "found from external storage"); 1177 return -1; 1178 } 1179 1180 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) { 1181 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected " 1182 "PSK length %d in external storage", 1183 (int) wpabuf_len(pw)); 1184 ext_password_free(pw); 1185 return -1; 1186 } 1187 1188 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw)); 1189 pw_str[wpabuf_len(pw)] = '\0'; 1190 1191#ifndef CONFIG_NO_PBKDF2 1192 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss) 1193 { 1194 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len, 1195 4096, psk, PMK_LEN); 1196 os_memset(pw_str, 0, sizeof(pw_str)); 1197 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from " 1198 "external passphrase)", 1199 psk, PMK_LEN); 1200 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1201 } else 1202#endif /* CONFIG_NO_PBKDF2 */ 1203 if (wpabuf_len(pw) == 2 * PMK_LEN) { 1204 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) { 1205 wpa_msg(wpa_s, MSG_INFO, "EXT PW: " 1206 "Invalid PSK hex string"); 1207 os_memset(pw_str, 0, sizeof(pw_str)); 1208 ext_password_free(pw); 1209 return -1; 1210 } 1211 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN); 1212 } else { 1213 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable " 1214 "PSK available"); 1215 os_memset(pw_str, 0, sizeof(pw_str)); 1216 ext_password_free(pw); 1217 return -1; 1218 } 1219 1220 os_memset(pw_str, 0, sizeof(pw_str)); 1221 ext_password_free(pw); 1222 } 1223#endif /* CONFIG_EXT_PASSWORD */ 1224 } else 1225 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 1226 1227 return 0; 1228} 1229 1230 1231int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf) 1232{ 1233 u32 ext_capab = 0; 1234 u8 *pos = buf; 1235 1236#ifdef CONFIG_INTERWORKING 1237 if (wpa_s->conf->interworking) 1238 ext_capab |= BIT(31); /* Interworking */ 1239#endif /* CONFIG_INTERWORKING */ 1240 1241#ifdef CONFIG_WNM 1242 ext_capab |= BIT(17); /* WNM-Sleep Mode */ 1243 ext_capab |= BIT(19); /* BSS Transition */ 1244#endif /* CONFIG_WNM */ 1245 1246 if (!ext_capab) 1247 return 0; 1248 1249 *pos++ = WLAN_EID_EXT_CAPAB; 1250 *pos++ = 4; 1251 WPA_PUT_LE32(pos, ext_capab); 1252 pos += 4; 1253 1254 return pos - buf; 1255} 1256 1257 1258/** 1259 * wpa_supplicant_associate - Request association 1260 * @wpa_s: Pointer to wpa_supplicant data 1261 * @bss: Scan results for the selected BSS, or %NULL if not available 1262 * @ssid: Configuration data for the selected network 1263 * 1264 * This function is used to request %wpa_supplicant to associate with a BSS. 1265 */ 1266void wpa_supplicant_associate(struct wpa_supplicant *wpa_s, 1267 struct wpa_bss *bss, struct wpa_ssid *ssid) 1268{ 1269 u8 wpa_ie[200]; 1270 size_t wpa_ie_len; 1271 int use_crypt, ret, i, bssid_changed; 1272 int algs = WPA_AUTH_ALG_OPEN; 1273 enum wpa_cipher cipher_pairwise, cipher_group; 1274 struct wpa_driver_associate_params params; 1275 int wep_keys_set = 0; 1276 struct wpa_driver_capa capa; 1277 int assoc_failed = 0; 1278 struct wpa_ssid *old_ssid; 1279 u8 ext_capab[10]; 1280 int ext_capab_len; 1281#ifdef CONFIG_HT_OVERRIDES 1282 struct ieee80211_ht_capabilities htcaps; 1283 struct ieee80211_ht_capabilities htcaps_mask; 1284#endif /* CONFIG_HT_OVERRIDES */ 1285 1286#ifdef CONFIG_IBSS_RSN 1287 ibss_rsn_deinit(wpa_s->ibss_rsn); 1288 wpa_s->ibss_rsn = NULL; 1289#endif /* CONFIG_IBSS_RSN */ 1290 1291 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO || 1292 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1293#ifdef CONFIG_AP 1294 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) { 1295 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP " 1296 "mode"); 1297 return; 1298 } 1299 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) { 1300 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1301 return; 1302 } 1303 wpa_s->current_bss = bss; 1304#else /* CONFIG_AP */ 1305 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in " 1306 "the build"); 1307#endif /* CONFIG_AP */ 1308 return; 1309 } 1310 1311#ifdef CONFIG_TDLS 1312 if (bss) 1313 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1), 1314 bss->ie_len); 1315#endif /* CONFIG_TDLS */ 1316 1317 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1318 ssid->mode == IEEE80211_MODE_INFRA) { 1319 sme_authenticate(wpa_s, bss, ssid); 1320 return; 1321 } 1322 1323 os_memset(¶ms, 0, sizeof(params)); 1324 wpa_s->reassociate = 0; 1325 if (bss && !wpas_driver_bss_selection(wpa_s)) { 1326#ifdef CONFIG_IEEE80211R 1327 const u8 *ie, *md = NULL; 1328#endif /* CONFIG_IEEE80211R */ 1329 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 1330 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid), 1331 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq); 1332 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1333 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1334 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 1335 if (bssid_changed) 1336 wpas_notify_bssid_changed(wpa_s); 1337#ifdef CONFIG_IEEE80211R 1338 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 1339 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 1340 md = ie + 2; 1341 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 1342 if (md) { 1343 /* Prepare for the next transition */ 1344 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 1345 } 1346#endif /* CONFIG_IEEE80211R */ 1347#ifdef CONFIG_WPS 1348 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) && 1349 wpa_s->conf->ap_scan == 2 && 1350 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 1351 /* Use ap_scan==1 style network selection to find the network 1352 */ 1353 wpa_s->scan_req = MANUAL_SCAN_REQ; 1354 wpa_s->reassociate = 1; 1355 wpa_supplicant_req_scan(wpa_s, 0, 0); 1356 return; 1357#endif /* CONFIG_WPS */ 1358 } else { 1359 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'", 1360 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 1361 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1362 } 1363 wpa_supplicant_cancel_sched_scan(wpa_s); 1364 wpa_supplicant_cancel_scan(wpa_s); 1365 1366 /* Starting new association, so clear the possibly used WPA IE from the 1367 * previous association. */ 1368 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1369 1370#ifdef IEEE8021X_EAPOL 1371 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1372 if (ssid->leap) { 1373 if (ssid->non_leap == 0) 1374 algs = WPA_AUTH_ALG_LEAP; 1375 else 1376 algs |= WPA_AUTH_ALG_LEAP; 1377 } 1378 } 1379#endif /* IEEE8021X_EAPOL */ 1380 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs); 1381 if (ssid->auth_alg) { 1382 algs = ssid->auth_alg; 1383 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 1384 "0x%x", algs); 1385 } 1386 1387 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 1388 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 1389 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 1390 int try_opportunistic; 1391 try_opportunistic = (ssid->proactive_key_caching < 0 ? 1392 wpa_s->conf->okc : 1393 ssid->proactive_key_caching) && 1394 (ssid->proto & WPA_PROTO_RSN); 1395 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 1396 wpa_s->current_ssid, 1397 try_opportunistic) == 0) 1398 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); 1399 wpa_ie_len = sizeof(wpa_ie); 1400 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 1401 wpa_ie, &wpa_ie_len)) { 1402 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 1403 "key management and encryption suites"); 1404 return; 1405 } 1406 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss && 1407 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 1408 /* 1409 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 1410 * use non-WPA since the scan results did not indicate that the 1411 * AP is using WPA or WPA2. 1412 */ 1413 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1414 wpa_ie_len = 0; 1415 wpa_s->wpa_proto = 0; 1416 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 1417 wpa_ie_len = sizeof(wpa_ie); 1418 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 1419 wpa_ie, &wpa_ie_len)) { 1420 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 1421 "key management and encryption suites (no " 1422 "scan results)"); 1423 return; 1424 } 1425#ifdef CONFIG_WPS 1426 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 1427 struct wpabuf *wps_ie; 1428 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 1429 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) { 1430 wpa_ie_len = wpabuf_len(wps_ie); 1431 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len); 1432 } else 1433 wpa_ie_len = 0; 1434 wpabuf_free(wps_ie); 1435 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1436 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY)) 1437 params.wps = WPS_MODE_PRIVACY; 1438 else 1439 params.wps = WPS_MODE_OPEN; 1440 wpa_s->wpa_proto = 0; 1441#endif /* CONFIG_WPS */ 1442 } else { 1443 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1444 wpa_ie_len = 0; 1445 wpa_s->wpa_proto = 0; 1446 } 1447 1448#ifdef CONFIG_P2P 1449 if (wpa_s->global->p2p) { 1450 u8 *pos; 1451 size_t len; 1452 int res; 1453 pos = wpa_ie + wpa_ie_len; 1454 len = sizeof(wpa_ie) - wpa_ie_len; 1455 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 1456 ssid->p2p_group); 1457 if (res >= 0) 1458 wpa_ie_len += res; 1459 } 1460 1461 wpa_s->cross_connect_disallowed = 0; 1462 if (bss) { 1463 struct wpabuf *p2p; 1464 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 1465 if (p2p) { 1466 wpa_s->cross_connect_disallowed = 1467 p2p_get_cross_connect_disallowed(p2p); 1468 wpabuf_free(p2p); 1469 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross " 1470 "connection", 1471 wpa_s->cross_connect_disallowed ? 1472 "disallows" : "allows"); 1473 } 1474 } 1475#endif /* CONFIG_P2P */ 1476 1477#ifdef CONFIG_HS20 1478 if (wpa_s->conf->hs20) { 1479 struct wpabuf *hs20; 1480 hs20 = wpabuf_alloc(20); 1481 if (hs20) { 1482 wpas_hs20_add_indication(hs20); 1483 os_memcpy(wpa_ie + wpa_ie_len, wpabuf_head(hs20), 1484 wpabuf_len(hs20)); 1485 wpa_ie_len += wpabuf_len(hs20); 1486 wpabuf_free(hs20); 1487 } 1488 } 1489#endif /* CONFIG_HS20 */ 1490 1491 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab); 1492 if (ext_capab_len > 0) { 1493 u8 *pos = wpa_ie; 1494 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN) 1495 pos += 2 + pos[1]; 1496 os_memmove(pos + ext_capab_len, pos, 1497 wpa_ie_len - (pos - wpa_ie)); 1498 wpa_ie_len += ext_capab_len; 1499 os_memcpy(pos, ext_capab, ext_capab_len); 1500 } 1501 1502 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL); 1503 use_crypt = 1; 1504 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher); 1505 cipher_group = cipher_suite2driver(wpa_s->group_cipher); 1506 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 1507 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1508 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) 1509 use_crypt = 0; 1510 if (wpa_set_wep_keys(wpa_s, ssid)) { 1511 use_crypt = 1; 1512 wep_keys_set = 1; 1513 } 1514 } 1515 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) 1516 use_crypt = 0; 1517 1518#ifdef IEEE8021X_EAPOL 1519 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1520 if ((ssid->eapol_flags & 1521 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 1522 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 && 1523 !wep_keys_set) { 1524 use_crypt = 0; 1525 } else { 1526 /* Assume that dynamic WEP-104 keys will be used and 1527 * set cipher suites in order for drivers to expect 1528 * encryption. */ 1529 cipher_pairwise = cipher_group = CIPHER_WEP104; 1530 } 1531 } 1532#endif /* IEEE8021X_EAPOL */ 1533 1534 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1535 /* Set the key before (and later after) association */ 1536 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1537 } 1538 1539 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 1540 if (bss) { 1541 params.ssid = bss->ssid; 1542 params.ssid_len = bss->ssid_len; 1543 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) { 1544 wpa_printf(MSG_DEBUG, "Limit connection to BSSID " 1545 MACSTR " freq=%u MHz based on scan results " 1546 "(bssid_set=%d)", 1547 MAC2STR(bss->bssid), bss->freq, 1548 ssid->bssid_set); 1549 params.bssid = bss->bssid; 1550 params.freq = bss->freq; 1551 } 1552 } else { 1553 params.ssid = ssid->ssid; 1554 params.ssid_len = ssid->ssid_len; 1555 } 1556 1557 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set && 1558 wpa_s->conf->ap_scan == 2) { 1559 params.bssid = ssid->bssid; 1560 params.fixed_bssid = 1; 1561 } 1562 1563 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 && 1564 params.freq == 0) 1565 params.freq = ssid->frequency; /* Initial channel for IBSS */ 1566 params.wpa_ie = wpa_ie; 1567 params.wpa_ie_len = wpa_ie_len; 1568 params.pairwise_suite = cipher_pairwise; 1569 params.group_suite = cipher_group; 1570 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt); 1571 params.wpa_proto = wpa_s->wpa_proto; 1572 params.auth_alg = algs; 1573 params.mode = ssid->mode; 1574 params.bg_scan_period = ssid->bg_scan_period; 1575 for (i = 0; i < NUM_WEP_KEYS; i++) { 1576 if (ssid->wep_key_len[i]) 1577 params.wep_key[i] = ssid->wep_key[i]; 1578 params.wep_key_len[i] = ssid->wep_key_len[i]; 1579 } 1580 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 1581 1582 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 1583 (params.key_mgmt_suite == KEY_MGMT_PSK || 1584 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) { 1585 params.passphrase = ssid->passphrase; 1586 if (ssid->psk_set) 1587 params.psk = ssid->psk; 1588 } 1589 1590 params.drop_unencrypted = use_crypt; 1591 1592#ifdef CONFIG_IEEE80211W 1593 params.mgmt_frame_protection = 1594 ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 1595 wpa_s->conf->pmf : ssid->ieee80211w; 1596 if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) { 1597 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1598 struct wpa_ie_data ie; 1599 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 && 1600 ie.capabilities & 1601 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 1602 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports " 1603 "MFP: require MFP"); 1604 params.mgmt_frame_protection = 1605 MGMT_FRAME_PROTECTION_REQUIRED; 1606 } 1607 } 1608#endif /* CONFIG_IEEE80211W */ 1609 1610 params.p2p = ssid->p2p_group; 1611 1612 if (wpa_s->parent->set_sta_uapsd) 1613 params.uapsd = wpa_s->parent->sta_uapsd; 1614 else 1615 params.uapsd = -1; 1616 1617#ifdef CONFIG_HT_OVERRIDES 1618 os_memset(&htcaps, 0, sizeof(htcaps)); 1619 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 1620 params.htcaps = (u8 *) &htcaps; 1621 params.htcaps_mask = (u8 *) &htcaps_mask; 1622 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms); 1623#endif /* CONFIG_HT_OVERRIDES */ 1624 1625 ret = wpa_drv_associate(wpa_s, ¶ms); 1626 if (ret < 0) { 1627 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver " 1628 "failed"); 1629 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) { 1630 /* 1631 * The driver is known to mean what is saying, so we 1632 * can stop right here; the association will not 1633 * succeed. 1634 */ 1635 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1636 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1637 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1638 return; 1639 } 1640 /* try to continue anyway; new association will be tried again 1641 * after timeout */ 1642 assoc_failed = 1; 1643 } 1644 1645 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1646 /* Set the key after the association just in case association 1647 * cleared the previously configured key. */ 1648 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1649 /* No need to timeout authentication since there is no key 1650 * management. */ 1651 wpa_supplicant_cancel_auth_timeout(wpa_s); 1652 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1653#ifdef CONFIG_IBSS_RSN 1654 } else if (ssid->mode == WPAS_MODE_IBSS && 1655 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 1656 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 1657 /* 1658 * RSN IBSS authentication is per-STA and we can disable the 1659 * per-BSSID authentication. 1660 */ 1661 wpa_supplicant_cancel_auth_timeout(wpa_s); 1662#endif /* CONFIG_IBSS_RSN */ 1663 } else { 1664 /* Timeout for IEEE 802.11 authentication and association */ 1665 int timeout = 60; 1666 1667 if (assoc_failed) { 1668 /* give IBSS a bit more time */ 1669 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5; 1670 } else if (wpa_s->conf->ap_scan == 1) { 1671 /* give IBSS a bit more time */ 1672 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10; 1673 } 1674 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 1675 } 1676 1677 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 && 1678 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) { 1679 /* Set static WEP keys again */ 1680 wpa_set_wep_keys(wpa_s, ssid); 1681 } 1682 1683 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) { 1684 /* 1685 * Do not allow EAP session resumption between different 1686 * network configurations. 1687 */ 1688 eapol_sm_invalidate_cached_session(wpa_s->eapol); 1689 } 1690 old_ssid = wpa_s->current_ssid; 1691 wpa_s->current_ssid = ssid; 1692 wpa_s->current_bss = bss; 1693 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 1694 wpa_supplicant_initiate_eapol(wpa_s); 1695 if (old_ssid != wpa_s->current_ssid) 1696 wpas_notify_network_changed(wpa_s); 1697} 1698 1699 1700static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s, 1701 const u8 *addr) 1702{ 1703 struct wpa_ssid *old_ssid; 1704 1705 wpa_clear_keys(wpa_s, addr); 1706 old_ssid = wpa_s->current_ssid; 1707 wpa_supplicant_mark_disassoc(wpa_s); 1708 wpa_sm_set_config(wpa_s->wpa, NULL); 1709 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 1710 if (old_ssid != wpa_s->current_ssid) 1711 wpas_notify_network_changed(wpa_s); 1712 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 1713} 1714 1715 1716/** 1717 * wpa_supplicant_deauthenticate - Deauthenticate the current connection 1718 * @wpa_s: Pointer to wpa_supplicant data 1719 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame 1720 * 1721 * This function is used to request %wpa_supplicant to deauthenticate from the 1722 * current AP. 1723 */ 1724void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s, 1725 int reason_code) 1726{ 1727 u8 *addr = NULL; 1728 union wpa_event_data event; 1729 int zero_addr = 0; 1730 1731 wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR 1732 " pending_bssid=" MACSTR " reason=%d state=%s", 1733 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 1734 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state)); 1735 1736 if (!is_zero_ether_addr(wpa_s->bssid)) 1737 addr = wpa_s->bssid; 1738 else if (!is_zero_ether_addr(wpa_s->pending_bssid) && 1739 (wpa_s->wpa_state == WPA_AUTHENTICATING || 1740 wpa_s->wpa_state == WPA_ASSOCIATING)) 1741 addr = wpa_s->pending_bssid; 1742 else if (wpa_s->wpa_state == WPA_ASSOCIATING) { 1743 /* 1744 * When using driver-based BSS selection, we may not know the 1745 * BSSID with which we are currently trying to associate. We 1746 * need to notify the driver of this disconnection even in such 1747 * a case, so use the all zeros address here. 1748 */ 1749 addr = wpa_s->bssid; 1750 zero_addr = 1; 1751 } 1752 1753 if (addr) { 1754 wpa_drv_deauthenticate(wpa_s, addr, reason_code); 1755 os_memset(&event, 0, sizeof(event)); 1756 event.deauth_info.reason_code = (u16) reason_code; 1757 event.deauth_info.locally_generated = 1; 1758 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event); 1759 if (zero_addr) 1760 addr = NULL; 1761 } 1762 1763 wpa_supplicant_clear_connection(wpa_s, addr); 1764} 1765 1766 1767/** 1768 * wpa_supplicant_enable_network - Mark a configured network as enabled 1769 * @wpa_s: wpa_supplicant structure for a network interface 1770 * @ssid: wpa_ssid structure for a configured network or %NULL 1771 * 1772 * Enables the specified network or all networks if no network specified. 1773 */ 1774void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s, 1775 struct wpa_ssid *ssid) 1776{ 1777 struct wpa_ssid *other_ssid; 1778 int was_disabled; 1779 1780 if (ssid == NULL) { 1781 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1782 other_ssid = other_ssid->next) { 1783 if (other_ssid->disabled == 2) 1784 continue; /* do not change persistent P2P group 1785 * data */ 1786 if (other_ssid == wpa_s->current_ssid && 1787 other_ssid->disabled) 1788 wpa_s->reassociate = 1; 1789 1790 was_disabled = other_ssid->disabled; 1791 1792 other_ssid->disabled = 0; 1793 if (was_disabled) 1794 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 1795 1796 if (was_disabled != other_ssid->disabled) 1797 wpas_notify_network_enabled_changed( 1798 wpa_s, other_ssid); 1799 } 1800 if (wpa_s->reassociate) 1801 wpa_supplicant_req_scan(wpa_s, 0, 0); 1802 } else if (ssid->disabled && ssid->disabled != 2) { 1803 if (wpa_s->current_ssid == NULL) { 1804 /* 1805 * Try to reassociate since there is no current 1806 * configuration and a new network was made available. 1807 */ 1808 wpa_s->reassociate = 1; 1809 wpa_supplicant_req_scan(wpa_s, 0, 0); 1810 } 1811 1812 was_disabled = ssid->disabled; 1813 1814 ssid->disabled = 0; 1815 wpas_clear_temp_disabled(wpa_s, ssid, 1); 1816 1817 if (was_disabled != ssid->disabled) 1818 wpas_notify_network_enabled_changed(wpa_s, ssid); 1819 } 1820} 1821 1822 1823/** 1824 * wpa_supplicant_disable_network - Mark a configured network as disabled 1825 * @wpa_s: wpa_supplicant structure for a network interface 1826 * @ssid: wpa_ssid structure for a configured network or %NULL 1827 * 1828 * Disables the specified network or all networks if no network specified. 1829 */ 1830void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s, 1831 struct wpa_ssid *ssid) 1832{ 1833 struct wpa_ssid *other_ssid; 1834 int was_disabled; 1835 1836 if (ssid == NULL) { 1837 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1838 other_ssid = other_ssid->next) { 1839 was_disabled = other_ssid->disabled; 1840 if (was_disabled == 2) 1841 continue; /* do not change persistent P2P group 1842 * data */ 1843 1844 other_ssid->disabled = 1; 1845 1846 if (was_disabled != other_ssid->disabled) 1847 wpas_notify_network_enabled_changed( 1848 wpa_s, other_ssid); 1849 } 1850 if (wpa_s->current_ssid) 1851 wpa_supplicant_deauthenticate( 1852 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1853 } else if (ssid->disabled != 2) { 1854 if (ssid == wpa_s->current_ssid) 1855 wpa_supplicant_deauthenticate( 1856 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1857 1858 was_disabled = ssid->disabled; 1859 1860 ssid->disabled = 1; 1861 1862 if (was_disabled != ssid->disabled) 1863 wpas_notify_network_enabled_changed(wpa_s, ssid); 1864 } 1865} 1866 1867 1868/** 1869 * wpa_supplicant_select_network - Attempt association with a network 1870 * @wpa_s: wpa_supplicant structure for a network interface 1871 * @ssid: wpa_ssid structure for a configured network or %NULL for any network 1872 */ 1873void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s, 1874 struct wpa_ssid *ssid) 1875{ 1876 1877 struct wpa_ssid *other_ssid; 1878 int disconnected = 0; 1879 1880 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) { 1881 wpa_supplicant_deauthenticate( 1882 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1883 disconnected = 1; 1884 } 1885 1886 if (ssid) 1887 wpas_clear_temp_disabled(wpa_s, ssid, 1); 1888 1889 /* 1890 * Mark all other networks disabled or mark all networks enabled if no 1891 * network specified. 1892 */ 1893 for (other_ssid = wpa_s->conf->ssid; other_ssid; 1894 other_ssid = other_ssid->next) { 1895 int was_disabled = other_ssid->disabled; 1896 if (was_disabled == 2) 1897 continue; /* do not change persistent P2P group data */ 1898 1899 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0; 1900 if (was_disabled && !other_ssid->disabled) 1901 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 1902 1903 if (was_disabled != other_ssid->disabled) 1904 wpas_notify_network_enabled_changed(wpa_s, other_ssid); 1905 } 1906 1907 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) { 1908 /* We are already associated with the selected network */ 1909 wpa_printf(MSG_DEBUG, "Already associated with the " 1910 "selected network - do nothing"); 1911 return; 1912 } 1913 1914 if (ssid) 1915 wpa_s->current_ssid = ssid; 1916 wpa_s->connect_without_scan = NULL; 1917 wpa_s->disconnected = 0; 1918 wpa_s->reassociate = 1; 1919 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0); 1920 1921 if (ssid) 1922 wpas_notify_network_selected(wpa_s, ssid); 1923} 1924 1925 1926/** 1927 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface 1928 * @wpa_s: wpa_supplicant structure for a network interface 1929 * @ap_scan: AP scan mode 1930 * Returns: 0 if succeed or -1 if ap_scan has an invalid value 1931 * 1932 */ 1933int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan) 1934{ 1935 1936 int old_ap_scan; 1937 1938 if (ap_scan < 0 || ap_scan > 2) 1939 return -1; 1940 1941#ifdef ANDROID 1942 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan && 1943 wpa_s->wpa_state >= WPA_ASSOCIATING && 1944 wpa_s->wpa_state < WPA_COMPLETED) { 1945 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while " 1946 "associating", wpa_s->conf->ap_scan, ap_scan); 1947 return 0; 1948 } 1949#endif /* ANDROID */ 1950 1951 old_ap_scan = wpa_s->conf->ap_scan; 1952 wpa_s->conf->ap_scan = ap_scan; 1953 1954 if (old_ap_scan != wpa_s->conf->ap_scan) 1955 wpas_notify_ap_scan_changed(wpa_s); 1956 1957 return 0; 1958} 1959 1960 1961/** 1962 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age 1963 * @wpa_s: wpa_supplicant structure for a network interface 1964 * @expire_age: Expiration age in seconds 1965 * Returns: 0 if succeed or -1 if expire_age has an invalid value 1966 * 1967 */ 1968int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s, 1969 unsigned int bss_expire_age) 1970{ 1971 if (bss_expire_age < 10) { 1972 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u", 1973 bss_expire_age); 1974 return -1; 1975 } 1976 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec", 1977 bss_expire_age); 1978 wpa_s->conf->bss_expiration_age = bss_expire_age; 1979 1980 return 0; 1981} 1982 1983 1984/** 1985 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count 1986 * @wpa_s: wpa_supplicant structure for a network interface 1987 * @expire_count: number of scans after which an unseen BSS is reclaimed 1988 * Returns: 0 if succeed or -1 if expire_count has an invalid value 1989 * 1990 */ 1991int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s, 1992 unsigned int bss_expire_count) 1993{ 1994 if (bss_expire_count < 1) { 1995 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u", 1996 bss_expire_count); 1997 return -1; 1998 } 1999 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u", 2000 bss_expire_count); 2001 wpa_s->conf->bss_expiration_scan_count = bss_expire_count; 2002 2003 return 0; 2004} 2005 2006 2007/** 2008 * wpa_supplicant_set_scan_interval - Set scan interval 2009 * @wpa_s: wpa_supplicant structure for a network interface 2010 * @scan_interval: scan interval in seconds 2011 * Returns: 0 if succeed or -1 if scan_interval has an invalid value 2012 * 2013 */ 2014int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s, 2015 int scan_interval) 2016{ 2017 if (scan_interval < 0) { 2018 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d", 2019 scan_interval); 2020 return -1; 2021 } 2022 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec", 2023 scan_interval); 2024 wpa_s->scan_interval = scan_interval; 2025 2026 return 0; 2027} 2028 2029 2030/** 2031 * wpa_supplicant_set_debug_params - Set global debug params 2032 * @global: wpa_global structure 2033 * @debug_level: debug level 2034 * @debug_timestamp: determines if show timestamp in debug data 2035 * @debug_show_keys: determines if show keys in debug data 2036 * Returns: 0 if succeed or -1 if debug_level has wrong value 2037 */ 2038int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level, 2039 int debug_timestamp, int debug_show_keys) 2040{ 2041 2042 int old_level, old_timestamp, old_show_keys; 2043 2044 /* check for allowed debuglevels */ 2045 if (debug_level != MSG_EXCESSIVE && 2046 debug_level != MSG_MSGDUMP && 2047 debug_level != MSG_DEBUG && 2048 debug_level != MSG_INFO && 2049 debug_level != MSG_WARNING && 2050 debug_level != MSG_ERROR) 2051 return -1; 2052 2053 old_level = wpa_debug_level; 2054 old_timestamp = wpa_debug_timestamp; 2055 old_show_keys = wpa_debug_show_keys; 2056 2057 wpa_debug_level = debug_level; 2058 wpa_debug_timestamp = debug_timestamp ? 1 : 0; 2059 wpa_debug_show_keys = debug_show_keys ? 1 : 0; 2060 2061 if (wpa_debug_level != old_level) 2062 wpas_notify_debug_level_changed(global); 2063 if (wpa_debug_timestamp != old_timestamp) 2064 wpas_notify_debug_timestamp_changed(global); 2065 if (wpa_debug_show_keys != old_show_keys) 2066 wpas_notify_debug_show_keys_changed(global); 2067 2068 return 0; 2069} 2070 2071 2072/** 2073 * wpa_supplicant_get_ssid - Get a pointer to the current network structure 2074 * @wpa_s: Pointer to wpa_supplicant data 2075 * Returns: A pointer to the current network structure or %NULL on failure 2076 */ 2077struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s) 2078{ 2079 struct wpa_ssid *entry; 2080 u8 ssid[MAX_SSID_LEN]; 2081 int res; 2082 size_t ssid_len; 2083 u8 bssid[ETH_ALEN]; 2084 int wired; 2085 2086 res = wpa_drv_get_ssid(wpa_s, ssid); 2087 if (res < 0) { 2088 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from " 2089 "driver"); 2090 return NULL; 2091 } 2092 ssid_len = res; 2093 2094 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2095 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from " 2096 "driver"); 2097 return NULL; 2098 } 2099 2100 wired = wpa_s->conf->ap_scan == 0 && 2101 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED); 2102 2103 entry = wpa_s->conf->ssid; 2104 while (entry) { 2105 if (!wpas_network_disabled(wpa_s, entry) && 2106 ((ssid_len == entry->ssid_len && 2107 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) && 2108 (!entry->bssid_set || 2109 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2110 return entry; 2111#ifdef CONFIG_WPS 2112 if (!wpas_network_disabled(wpa_s, entry) && 2113 (entry->key_mgmt & WPA_KEY_MGMT_WPS) && 2114 (entry->ssid == NULL || entry->ssid_len == 0) && 2115 (!entry->bssid_set || 2116 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2117 return entry; 2118#endif /* CONFIG_WPS */ 2119 2120 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set && 2121 entry->ssid_len == 0 && 2122 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0) 2123 return entry; 2124 2125 entry = entry->next; 2126 } 2127 2128 return NULL; 2129} 2130 2131 2132static int select_driver(struct wpa_supplicant *wpa_s, int i) 2133{ 2134 struct wpa_global *global = wpa_s->global; 2135 2136 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) { 2137 global->drv_priv[i] = wpa_drivers[i]->global_init(); 2138 if (global->drv_priv[i] == NULL) { 2139 wpa_printf(MSG_ERROR, "Failed to initialize driver " 2140 "'%s'", wpa_drivers[i]->name); 2141 return -1; 2142 } 2143 } 2144 2145 wpa_s->driver = wpa_drivers[i]; 2146 wpa_s->global_drv_priv = global->drv_priv[i]; 2147 2148 return 0; 2149} 2150 2151 2152static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s, 2153 const char *name) 2154{ 2155 int i; 2156 size_t len; 2157 const char *pos, *driver = name; 2158 2159 if (wpa_s == NULL) 2160 return -1; 2161 2162 if (wpa_drivers[0] == NULL) { 2163 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into " 2164 "wpa_supplicant"); 2165 return -1; 2166 } 2167 2168 if (name == NULL) { 2169 /* default to first driver in the list */ 2170 return select_driver(wpa_s, 0); 2171 } 2172 2173 do { 2174 pos = os_strchr(driver, ','); 2175 if (pos) 2176 len = pos - driver; 2177 else 2178 len = os_strlen(driver); 2179 2180 for (i = 0; wpa_drivers[i]; i++) { 2181 if (os_strlen(wpa_drivers[i]->name) == len && 2182 os_strncmp(driver, wpa_drivers[i]->name, len) == 2183 0) { 2184 /* First driver that succeeds wins */ 2185 if (select_driver(wpa_s, i) == 0) 2186 return 0; 2187 } 2188 } 2189 2190 driver = pos + 1; 2191 } while (pos); 2192 2193 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name); 2194 return -1; 2195} 2196 2197 2198/** 2199 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant 2200 * @ctx: Context pointer (wpa_s); this is the ctx variable registered 2201 * with struct wpa_driver_ops::init() 2202 * @src_addr: Source address of the EAPOL frame 2203 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header) 2204 * @len: Length of the EAPOL data 2205 * 2206 * This function is called for each received EAPOL frame. Most driver 2207 * interfaces rely on more generic OS mechanism for receiving frames through 2208 * l2_packet, but if such a mechanism is not available, the driver wrapper may 2209 * take care of received EAPOL frames and deliver them to the core supplicant 2210 * code by calling this function. 2211 */ 2212void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr, 2213 const u8 *buf, size_t len) 2214{ 2215 struct wpa_supplicant *wpa_s = ctx; 2216 2217 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr)); 2218 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len); 2219 2220 if (wpa_s->wpa_state < WPA_ASSOCIATED || 2221 (wpa_s->last_eapol_matches_bssid && 2222#ifdef CONFIG_AP 2223 !wpa_s->ap_iface && 2224#endif /* CONFIG_AP */ 2225 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) != 0)) { 2226 /* 2227 * There is possible race condition between receiving the 2228 * association event and the EAPOL frame since they are coming 2229 * through different paths from the driver. In order to avoid 2230 * issues in trying to process the EAPOL frame before receiving 2231 * association information, lets queue it for processing until 2232 * the association event is received. This may also be needed in 2233 * driver-based roaming case, so also use src_addr != BSSID as a 2234 * trigger if we have previously confirmed that the 2235 * Authenticator uses BSSID as the src_addr (which is not the 2236 * case with wired IEEE 802.1X). 2237 */ 2238 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing " 2239 "of received EAPOL frame (state=%s bssid=" MACSTR ")", 2240 wpa_supplicant_state_txt(wpa_s->wpa_state), 2241 MAC2STR(wpa_s->bssid)); 2242 wpabuf_free(wpa_s->pending_eapol_rx); 2243 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len); 2244 if (wpa_s->pending_eapol_rx) { 2245 os_get_time(&wpa_s->pending_eapol_rx_time); 2246 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr, 2247 ETH_ALEN); 2248 } 2249 return; 2250 } 2251 2252 wpa_s->last_eapol_matches_bssid = 2253 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) == 0; 2254 2255#ifdef CONFIG_AP 2256 if (wpa_s->ap_iface) { 2257 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len); 2258 return; 2259 } 2260#endif /* CONFIG_AP */ 2261 2262 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 2263 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since " 2264 "no key management is configured"); 2265 return; 2266 } 2267 2268 if (wpa_s->eapol_received == 0 && 2269 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) || 2270 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 2271 wpa_s->wpa_state != WPA_COMPLETED) && 2272 (wpa_s->current_ssid == NULL || 2273 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) { 2274 /* Timeout for completing IEEE 802.1X and WPA authentication */ 2275 wpa_supplicant_req_auth_timeout( 2276 wpa_s, 2277 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 2278 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA || 2279 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ? 2280 70 : 10, 0); 2281 } 2282 wpa_s->eapol_received++; 2283 2284 if (wpa_s->countermeasures) { 2285 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped " 2286 "EAPOL packet"); 2287 return; 2288 } 2289 2290#ifdef CONFIG_IBSS_RSN 2291 if (wpa_s->current_ssid && 2292 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) { 2293 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len); 2294 return; 2295 } 2296#endif /* CONFIG_IBSS_RSN */ 2297 2298 /* Source address of the incoming EAPOL frame could be compared to the 2299 * current BSSID. However, it is possible that a centralized 2300 * Authenticator could be using another MAC address than the BSSID of 2301 * an AP, so just allow any address to be used for now. The replies are 2302 * still sent to the current BSSID (if available), though. */ 2303 2304 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN); 2305 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) && 2306 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0) 2307 return; 2308 wpa_drv_poll(wpa_s); 2309 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 2310 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len); 2311 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 2312 /* 2313 * Set portValid = TRUE here since we are going to skip 4-way 2314 * handshake processing which would normally set portValid. We 2315 * need this to allow the EAPOL state machines to be completed 2316 * without going through EAPOL-Key handshake. 2317 */ 2318 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 2319 } 2320} 2321 2322 2323int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s) 2324{ 2325 if (wpa_s->driver->send_eapol) { 2326 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 2327 if (addr) 2328 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 2329 } else if (!(wpa_s->drv_flags & 2330 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) { 2331 l2_packet_deinit(wpa_s->l2); 2332 wpa_s->l2 = l2_packet_init(wpa_s->ifname, 2333 wpa_drv_get_mac_addr(wpa_s), 2334 ETH_P_EAPOL, 2335 wpa_supplicant_rx_eapol, wpa_s, 0); 2336 if (wpa_s->l2 == NULL) 2337 return -1; 2338 } else { 2339 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 2340 if (addr) 2341 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 2342 } 2343 2344 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) { 2345 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address"); 2346 return -1; 2347 } 2348 2349 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR, 2350 MAC2STR(wpa_s->own_addr)); 2351 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 2352 2353 return 0; 2354} 2355 2356 2357static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr, 2358 const u8 *buf, size_t len) 2359{ 2360 struct wpa_supplicant *wpa_s = ctx; 2361 const struct l2_ethhdr *eth; 2362 2363 if (len < sizeof(*eth)) 2364 return; 2365 eth = (const struct l2_ethhdr *) buf; 2366 2367 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 && 2368 !(eth->h_dest[0] & 0x01)) { 2369 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 2370 " (bridge - not for this interface - ignore)", 2371 MAC2STR(src_addr), MAC2STR(eth->h_dest)); 2372 return; 2373 } 2374 2375 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 2376 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest)); 2377 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth), 2378 len - sizeof(*eth)); 2379} 2380 2381 2382/** 2383 * wpa_supplicant_driver_init - Initialize driver interface parameters 2384 * @wpa_s: Pointer to wpa_supplicant data 2385 * Returns: 0 on success, -1 on failure 2386 * 2387 * This function is called to initialize driver interface parameters. 2388 * wpa_drv_init() must have been called before this function to initialize the 2389 * driver interface. 2390 */ 2391int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s) 2392{ 2393 static int interface_count = 0; 2394 2395 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) 2396 return -1; 2397 2398 if (wpa_s->bridge_ifname[0]) { 2399 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge " 2400 "interface '%s'", wpa_s->bridge_ifname); 2401 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname, 2402 wpa_s->own_addr, 2403 ETH_P_EAPOL, 2404 wpa_supplicant_rx_eapol_bridge, 2405 wpa_s, 1); 2406 if (wpa_s->l2_br == NULL) { 2407 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet " 2408 "connection for the bridge interface '%s'", 2409 wpa_s->bridge_ifname); 2410 return -1; 2411 } 2412 } 2413 2414 wpa_clear_keys(wpa_s, NULL); 2415 2416 /* Make sure that TKIP countermeasures are not left enabled (could 2417 * happen if wpa_supplicant is killed during countermeasures. */ 2418 wpa_drv_set_countermeasures(wpa_s, 0); 2419 2420 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver"); 2421 wpa_drv_flush_pmkid(wpa_s); 2422 2423 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; 2424 wpa_s->prev_scan_wildcard = 0; 2425 2426 if (wpa_supplicant_enabled_networks(wpa_s)) { 2427 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count, 2428 100000)) 2429 wpa_supplicant_req_scan(wpa_s, interface_count, 2430 100000); 2431 interface_count++; 2432 } else 2433 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 2434 2435 return 0; 2436} 2437 2438 2439static int wpa_supplicant_daemon(const char *pid_file) 2440{ 2441 wpa_printf(MSG_DEBUG, "Daemonize.."); 2442 return os_daemonize(pid_file); 2443} 2444 2445 2446static struct wpa_supplicant * wpa_supplicant_alloc(void) 2447{ 2448 struct wpa_supplicant *wpa_s; 2449 2450 wpa_s = os_zalloc(sizeof(*wpa_s)); 2451 if (wpa_s == NULL) 2452 return NULL; 2453 wpa_s->scan_req = INITIAL_SCAN_REQ; 2454 wpa_s->scan_interval = 5; 2455 wpa_s->new_connection = 1; 2456 wpa_s->parent = wpa_s; 2457 wpa_s->sched_scanning = 0; 2458 2459 return wpa_s; 2460} 2461 2462 2463#ifdef CONFIG_HT_OVERRIDES 2464 2465static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s, 2466 struct ieee80211_ht_capabilities *htcaps, 2467 struct ieee80211_ht_capabilities *htcaps_mask, 2468 const char *ht_mcs) 2469{ 2470 /* parse ht_mcs into hex array */ 2471 int i; 2472 const char *tmp = ht_mcs; 2473 char *end = NULL; 2474 2475 /* If ht_mcs is null, do not set anything */ 2476 if (!ht_mcs) 2477 return 0; 2478 2479 /* This is what we are setting in the kernel */ 2480 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN); 2481 2482 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs); 2483 2484 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 2485 errno = 0; 2486 long v = strtol(tmp, &end, 16); 2487 if (errno == 0) { 2488 wpa_msg(wpa_s, MSG_DEBUG, 2489 "htcap value[%i]: %ld end: %p tmp: %p", 2490 i, v, end, tmp); 2491 if (end == tmp) 2492 break; 2493 2494 htcaps->supported_mcs_set[i] = v; 2495 tmp = end; 2496 } else { 2497 wpa_msg(wpa_s, MSG_ERROR, 2498 "Failed to parse ht-mcs: %s, error: %s\n", 2499 ht_mcs, strerror(errno)); 2500 return -1; 2501 } 2502 } 2503 2504 /* 2505 * If we were able to parse any values, then set mask for the MCS set. 2506 */ 2507 if (i) { 2508 os_memset(&htcaps_mask->supported_mcs_set, 0xff, 2509 IEEE80211_HT_MCS_MASK_LEN - 1); 2510 /* skip the 3 reserved bits */ 2511 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] = 2512 0x1f; 2513 } 2514 2515 return 0; 2516} 2517 2518 2519static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s, 2520 struct ieee80211_ht_capabilities *htcaps, 2521 struct ieee80211_ht_capabilities *htcaps_mask, 2522 int disabled) 2523{ 2524 u16 msk; 2525 2526 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled); 2527 2528 if (disabled == -1) 2529 return 0; 2530 2531 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE); 2532 htcaps_mask->ht_capabilities_info |= msk; 2533 if (disabled) 2534 htcaps->ht_capabilities_info &= msk; 2535 else 2536 htcaps->ht_capabilities_info |= msk; 2537 2538 return 0; 2539} 2540 2541 2542static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s, 2543 struct ieee80211_ht_capabilities *htcaps, 2544 struct ieee80211_ht_capabilities *htcaps_mask, 2545 int factor) 2546{ 2547 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor); 2548 2549 if (factor == -1) 2550 return 0; 2551 2552 if (factor < 0 || factor > 3) { 2553 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. " 2554 "Must be 0-3 or -1", factor); 2555 return -EINVAL; 2556 } 2557 2558 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */ 2559 htcaps->a_mpdu_params &= ~0x3; 2560 htcaps->a_mpdu_params |= factor & 0x3; 2561 2562 return 0; 2563} 2564 2565 2566static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s, 2567 struct ieee80211_ht_capabilities *htcaps, 2568 struct ieee80211_ht_capabilities *htcaps_mask, 2569 int density) 2570{ 2571 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density); 2572 2573 if (density == -1) 2574 return 0; 2575 2576 if (density < 0 || density > 7) { 2577 wpa_msg(wpa_s, MSG_ERROR, 2578 "ampdu_density: %d out of range. Must be 0-7 or -1.", 2579 density); 2580 return -EINVAL; 2581 } 2582 2583 htcaps_mask->a_mpdu_params |= 0x1C; 2584 htcaps->a_mpdu_params &= ~(0x1C); 2585 htcaps->a_mpdu_params |= (density << 2) & 0x1C; 2586 2587 return 0; 2588} 2589 2590 2591static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s, 2592 struct ieee80211_ht_capabilities *htcaps, 2593 struct ieee80211_ht_capabilities *htcaps_mask, 2594 int disabled) 2595{ 2596 /* Masking these out disables HT40 */ 2597 u16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET | 2598 HT_CAP_INFO_SHORT_GI40MHZ); 2599 2600 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled); 2601 2602 if (disabled) 2603 htcaps->ht_capabilities_info &= ~msk; 2604 else 2605 htcaps->ht_capabilities_info |= msk; 2606 2607 htcaps_mask->ht_capabilities_info |= msk; 2608 2609 return 0; 2610} 2611 2612 2613static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s, 2614 struct ieee80211_ht_capabilities *htcaps, 2615 struct ieee80211_ht_capabilities *htcaps_mask, 2616 int disabled) 2617{ 2618 /* Masking these out disables SGI */ 2619 u16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ | 2620 HT_CAP_INFO_SHORT_GI40MHZ); 2621 2622 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled); 2623 2624 if (disabled) 2625 htcaps->ht_capabilities_info &= ~msk; 2626 else 2627 htcaps->ht_capabilities_info |= msk; 2628 2629 htcaps_mask->ht_capabilities_info |= msk; 2630 2631 return 0; 2632} 2633 2634 2635void wpa_supplicant_apply_ht_overrides( 2636 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 2637 struct wpa_driver_associate_params *params) 2638{ 2639 struct ieee80211_ht_capabilities *htcaps; 2640 struct ieee80211_ht_capabilities *htcaps_mask; 2641 2642 if (!ssid) 2643 return; 2644 2645 params->disable_ht = ssid->disable_ht; 2646 if (!params->htcaps || !params->htcaps_mask) 2647 return; 2648 2649 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps; 2650 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask; 2651 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs); 2652 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask, 2653 ssid->disable_max_amsdu); 2654 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor); 2655 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density); 2656 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40); 2657 wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi); 2658} 2659 2660#endif /* CONFIG_HT_OVERRIDES */ 2661 2662 2663static int pcsc_reader_init(struct wpa_supplicant *wpa_s) 2664{ 2665#ifdef PCSC_FUNCS 2666 size_t len; 2667 2668 if (!wpa_s->conf->pcsc_reader) 2669 return 0; 2670 2671 wpa_s->scard = scard_init(SCARD_TRY_BOTH, wpa_s->conf->pcsc_reader); 2672 if (!wpa_s->scard) 2673 return 1; 2674 2675 if (wpa_s->conf->pcsc_pin && 2676 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) { 2677 scard_deinit(wpa_s->scard); 2678 wpa_s->scard = NULL; 2679 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed"); 2680 return -1; 2681 } 2682 2683 len = sizeof(wpa_s->imsi) - 1; 2684 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 2685 scard_deinit(wpa_s->scard); 2686 wpa_s->scard = NULL; 2687 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 2688 return -1; 2689 } 2690 wpa_s->imsi[len] = '\0'; 2691 2692 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 2693 2694 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 2695 wpa_s->imsi, wpa_s->mnc_len); 2696 2697 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 2698 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 2699#endif /* PCSC_FUNCS */ 2700 2701 return 0; 2702} 2703 2704 2705int wpas_init_ext_pw(struct wpa_supplicant *wpa_s) 2706{ 2707 char *val, *pos; 2708 2709 ext_password_deinit(wpa_s->ext_pw); 2710 wpa_s->ext_pw = NULL; 2711 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL); 2712 2713 if (!wpa_s->conf->ext_password_backend) 2714 return 0; 2715 2716 val = os_strdup(wpa_s->conf->ext_password_backend); 2717 if (val == NULL) 2718 return -1; 2719 pos = os_strchr(val, ':'); 2720 if (pos) 2721 *pos++ = '\0'; 2722 2723 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val); 2724 2725 wpa_s->ext_pw = ext_password_init(val, pos); 2726 os_free(val); 2727 if (wpa_s->ext_pw == NULL) { 2728 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend"); 2729 return -1; 2730 } 2731 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw); 2732 2733 return 0; 2734} 2735 2736 2737static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s, 2738 struct wpa_interface *iface) 2739{ 2740 const char *ifname, *driver; 2741 struct wpa_driver_capa capa; 2742 2743 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver " 2744 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname, 2745 iface->confname ? iface->confname : "N/A", 2746 iface->driver ? iface->driver : "default", 2747 iface->ctrl_interface ? iface->ctrl_interface : "N/A", 2748 iface->bridge_ifname ? iface->bridge_ifname : "N/A"); 2749 2750 if (iface->confname) { 2751#ifdef CONFIG_BACKEND_FILE 2752 wpa_s->confname = os_rel2abs_path(iface->confname); 2753 if (wpa_s->confname == NULL) { 2754 wpa_printf(MSG_ERROR, "Failed to get absolute path " 2755 "for configuration file '%s'.", 2756 iface->confname); 2757 return -1; 2758 } 2759 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'", 2760 iface->confname, wpa_s->confname); 2761#else /* CONFIG_BACKEND_FILE */ 2762 wpa_s->confname = os_strdup(iface->confname); 2763#endif /* CONFIG_BACKEND_FILE */ 2764 wpa_s->conf = wpa_config_read(wpa_s->confname); 2765 if (wpa_s->conf == NULL) { 2766 wpa_printf(MSG_ERROR, "Failed to read or parse " 2767 "configuration '%s'.", wpa_s->confname); 2768 return -1; 2769 } 2770 2771 /* 2772 * Override ctrl_interface and driver_param if set on command 2773 * line. 2774 */ 2775 if (iface->ctrl_interface) { 2776 os_free(wpa_s->conf->ctrl_interface); 2777 wpa_s->conf->ctrl_interface = 2778 os_strdup(iface->ctrl_interface); 2779 } 2780 2781 if (iface->driver_param) { 2782 os_free(wpa_s->conf->driver_param); 2783 wpa_s->conf->driver_param = 2784 os_strdup(iface->driver_param); 2785 } 2786 } else 2787 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface, 2788 iface->driver_param); 2789 2790 if (wpa_s->conf == NULL) { 2791 wpa_printf(MSG_ERROR, "\nNo configuration found."); 2792 return -1; 2793 } 2794 2795 if (iface->ifname == NULL) { 2796 wpa_printf(MSG_ERROR, "\nInterface name is required."); 2797 return -1; 2798 } 2799 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) { 2800 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.", 2801 iface->ifname); 2802 return -1; 2803 } 2804 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname)); 2805 2806 if (iface->bridge_ifname) { 2807 if (os_strlen(iface->bridge_ifname) >= 2808 sizeof(wpa_s->bridge_ifname)) { 2809 wpa_printf(MSG_ERROR, "\nToo long bridge interface " 2810 "name '%s'.", iface->bridge_ifname); 2811 return -1; 2812 } 2813 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname, 2814 sizeof(wpa_s->bridge_ifname)); 2815 } 2816 2817 /* RSNA Supplicant Key Management - INITIALIZE */ 2818 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 2819 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 2820 2821 /* Initialize driver interface and register driver event handler before 2822 * L2 receive handler so that association events are processed before 2823 * EAPOL-Key packets if both become available for the same select() 2824 * call. */ 2825 driver = iface->driver; 2826next_driver: 2827 if (wpa_supplicant_set_driver(wpa_s, driver) < 0) 2828 return -1; 2829 2830 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname); 2831 if (wpa_s->drv_priv == NULL) { 2832 const char *pos; 2833 pos = driver ? os_strchr(driver, ',') : NULL; 2834 if (pos) { 2835 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 2836 "driver interface - try next driver wrapper"); 2837 driver = pos + 1; 2838 goto next_driver; 2839 } 2840 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver " 2841 "interface"); 2842 return -1; 2843 } 2844 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) { 2845 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected " 2846 "driver_param '%s'", wpa_s->conf->driver_param); 2847 return -1; 2848 } 2849 2850 ifname = wpa_drv_get_ifname(wpa_s); 2851 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) { 2852 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced " 2853 "interface name with '%s'", ifname); 2854 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname)); 2855 } 2856 2857 if (wpa_supplicant_init_wpa(wpa_s) < 0) 2858 return -1; 2859 2860 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, 2861 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname : 2862 NULL); 2863 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 2864 2865 if (wpa_s->conf->dot11RSNAConfigPMKLifetime && 2866 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME, 2867 wpa_s->conf->dot11RSNAConfigPMKLifetime)) { 2868 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2869 "dot11RSNAConfigPMKLifetime"); 2870 return -1; 2871 } 2872 2873 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold && 2874 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD, 2875 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) { 2876 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2877 "dot11RSNAConfigPMKReauthThreshold"); 2878 return -1; 2879 } 2880 2881 if (wpa_s->conf->dot11RSNAConfigSATimeout && 2882 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, 2883 wpa_s->conf->dot11RSNAConfigSATimeout)) { 2884 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 2885 "dot11RSNAConfigSATimeout"); 2886 return -1; 2887 } 2888 2889 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s, 2890 &wpa_s->hw.num_modes, 2891 &wpa_s->hw.flags); 2892 2893 if (wpa_drv_get_capa(wpa_s, &capa) == 0) { 2894 wpa_s->drv_capa_known = 1; 2895 wpa_s->drv_flags = capa.flags; 2896 wpa_s->drv_enc = capa.enc; 2897 wpa_s->probe_resp_offloads = capa.probe_resp_offloads; 2898 wpa_s->max_scan_ssids = capa.max_scan_ssids; 2899 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids; 2900 wpa_s->sched_scan_supported = capa.sched_scan_supported; 2901 wpa_s->max_match_sets = capa.max_match_sets; 2902 wpa_s->max_remain_on_chan = capa.max_remain_on_chan; 2903 wpa_s->max_stations = capa.max_stations; 2904 } 2905 if (wpa_s->max_remain_on_chan == 0) 2906 wpa_s->max_remain_on_chan = 1000; 2907 2908 if (wpa_supplicant_driver_init(wpa_s) < 0) 2909 return -1; 2910 2911#ifdef CONFIG_TDLS 2912 if (wpa_tdls_init(wpa_s->wpa)) 2913 return -1; 2914#endif /* CONFIG_TDLS */ 2915 2916 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] && 2917 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) { 2918 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country"); 2919 return -1; 2920 } 2921 2922 if (wpas_wps_init(wpa_s)) 2923 return -1; 2924 2925 if (wpa_supplicant_init_eapol(wpa_s) < 0) 2926 return -1; 2927 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 2928 2929 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 2930 if (wpa_s->ctrl_iface == NULL) { 2931 wpa_printf(MSG_ERROR, 2932 "Failed to initialize control interface '%s'.\n" 2933 "You may have another wpa_supplicant process " 2934 "already running or the file was\n" 2935 "left by an unclean termination of wpa_supplicant " 2936 "in which case you will need\n" 2937 "to manually remove this file before starting " 2938 "wpa_supplicant again.\n", 2939 wpa_s->conf->ctrl_interface); 2940 return -1; 2941 } 2942 2943 wpa_s->gas = gas_query_init(wpa_s); 2944 if (wpa_s->gas == NULL) { 2945 wpa_printf(MSG_ERROR, "Failed to initialize GAS query"); 2946 return -1; 2947 } 2948 2949#ifdef CONFIG_P2P 2950 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) { 2951 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P"); 2952 return -1; 2953 } 2954#endif /* CONFIG_P2P */ 2955 2956 if (wpa_bss_init(wpa_s) < 0) 2957 return -1; 2958 2959 if (pcsc_reader_init(wpa_s) < 0) 2960 return -1; 2961 2962 if (wpas_init_ext_pw(wpa_s) < 0) 2963 return -1; 2964 2965 return 0; 2966} 2967 2968 2969static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, 2970 int notify, int terminate) 2971{ 2972 if (wpa_s->drv_priv) { 2973 wpa_supplicant_deauthenticate(wpa_s, 2974 WLAN_REASON_DEAUTH_LEAVING); 2975 2976 wpa_drv_set_countermeasures(wpa_s, 0); 2977 wpa_clear_keys(wpa_s, NULL); 2978 } 2979 2980 wpa_supplicant_cleanup(wpa_s); 2981 2982#ifdef CONFIG_P2P 2983 if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) { 2984 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing " 2985 "the management interface is being removed"); 2986 wpas_p2p_deinit_global(wpa_s->global); 2987 } 2988#endif /* CONFIG_P2P */ 2989 2990 if (wpa_s->drv_priv) 2991 wpa_drv_deinit(wpa_s); 2992 2993 if (notify) 2994 wpas_notify_iface_removed(wpa_s); 2995 2996 if (terminate) 2997 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING); 2998 2999 if (wpa_s->ctrl_iface) { 3000 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 3001 wpa_s->ctrl_iface = NULL; 3002 } 3003 3004 if (wpa_s->conf != NULL) { 3005 wpa_config_free(wpa_s->conf); 3006 wpa_s->conf = NULL; 3007 } 3008} 3009 3010 3011/** 3012 * wpa_supplicant_add_iface - Add a new network interface 3013 * @global: Pointer to global data from wpa_supplicant_init() 3014 * @iface: Interface configuration options 3015 * Returns: Pointer to the created interface or %NULL on failure 3016 * 3017 * This function is used to add new network interfaces for %wpa_supplicant. 3018 * This can be called before wpa_supplicant_run() to add interfaces before the 3019 * main event loop has been started. In addition, new interfaces can be added 3020 * dynamically while %wpa_supplicant is already running. This could happen, 3021 * e.g., when a hotplug network adapter is inserted. 3022 */ 3023struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global, 3024 struct wpa_interface *iface) 3025{ 3026 struct wpa_supplicant *wpa_s; 3027 struct wpa_interface t_iface; 3028 struct wpa_ssid *ssid; 3029 3030 if (global == NULL || iface == NULL) 3031 return NULL; 3032 3033 wpa_s = wpa_supplicant_alloc(); 3034 if (wpa_s == NULL) 3035 return NULL; 3036 3037 wpa_s->global = global; 3038 3039 t_iface = *iface; 3040 if (global->params.override_driver) { 3041 wpa_printf(MSG_DEBUG, "Override interface parameter: driver " 3042 "('%s' -> '%s')", 3043 iface->driver, global->params.override_driver); 3044 t_iface.driver = global->params.override_driver; 3045 } 3046 if (global->params.override_ctrl_interface) { 3047 wpa_printf(MSG_DEBUG, "Override interface parameter: " 3048 "ctrl_interface ('%s' -> '%s')", 3049 iface->ctrl_interface, 3050 global->params.override_ctrl_interface); 3051 t_iface.ctrl_interface = 3052 global->params.override_ctrl_interface; 3053 } 3054 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) { 3055 wpa_printf(MSG_DEBUG, "Failed to add interface %s", 3056 iface->ifname); 3057 wpa_supplicant_deinit_iface(wpa_s, 0, 0); 3058 os_free(wpa_s); 3059 return NULL; 3060 } 3061 3062 /* Notify the control interfaces about new iface */ 3063 if (wpas_notify_iface_added(wpa_s)) { 3064 wpa_supplicant_deinit_iface(wpa_s, 1, 0); 3065 os_free(wpa_s); 3066 return NULL; 3067 } 3068 3069 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 3070 wpas_notify_network_added(wpa_s, ssid); 3071 3072 wpa_s->next = global->ifaces; 3073 global->ifaces = wpa_s; 3074 3075 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname); 3076 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3077 3078 return wpa_s; 3079} 3080 3081 3082/** 3083 * wpa_supplicant_remove_iface - Remove a network interface 3084 * @global: Pointer to global data from wpa_supplicant_init() 3085 * @wpa_s: Pointer to the network interface to be removed 3086 * Returns: 0 if interface was removed, -1 if interface was not found 3087 * 3088 * This function can be used to dynamically remove network interfaces from 3089 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In 3090 * addition, this function is used to remove all remaining interfaces when 3091 * %wpa_supplicant is terminated. 3092 */ 3093int wpa_supplicant_remove_iface(struct wpa_global *global, 3094 struct wpa_supplicant *wpa_s, 3095 int terminate) 3096{ 3097 struct wpa_supplicant *prev; 3098 3099 /* Remove interface from the global list of interfaces */ 3100 prev = global->ifaces; 3101 if (prev == wpa_s) { 3102 global->ifaces = wpa_s->next; 3103 } else { 3104 while (prev && prev->next != wpa_s) 3105 prev = prev->next; 3106 if (prev == NULL) 3107 return -1; 3108 prev->next = wpa_s->next; 3109 } 3110 3111 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname); 3112 3113 if (global->p2p_group_formation == wpa_s) 3114 global->p2p_group_formation = NULL; 3115 wpa_supplicant_deinit_iface(wpa_s, 1, terminate); 3116 os_free(wpa_s); 3117 3118 return 0; 3119} 3120 3121 3122/** 3123 * wpa_supplicant_get_eap_mode - Get the current EAP mode 3124 * @wpa_s: Pointer to the network interface 3125 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found 3126 */ 3127const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s) 3128{ 3129 const char *eapol_method; 3130 3131 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 && 3132 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 3133 return "NO-EAP"; 3134 } 3135 3136 eapol_method = eapol_sm_get_method_name(wpa_s->eapol); 3137 if (eapol_method == NULL) 3138 return "UNKNOWN-EAP"; 3139 3140 return eapol_method; 3141} 3142 3143 3144/** 3145 * wpa_supplicant_get_iface - Get a new network interface 3146 * @global: Pointer to global data from wpa_supplicant_init() 3147 * @ifname: Interface name 3148 * Returns: Pointer to the interface or %NULL if not found 3149 */ 3150struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global, 3151 const char *ifname) 3152{ 3153 struct wpa_supplicant *wpa_s; 3154 3155 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3156 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3157 return wpa_s; 3158 } 3159 return NULL; 3160} 3161 3162 3163#ifndef CONFIG_NO_WPA_MSG 3164static const char * wpa_supplicant_msg_ifname_cb(void *ctx) 3165{ 3166 struct wpa_supplicant *wpa_s = ctx; 3167 if (wpa_s == NULL) 3168 return NULL; 3169 return wpa_s->ifname; 3170} 3171#endif /* CONFIG_NO_WPA_MSG */ 3172 3173 3174/** 3175 * wpa_supplicant_init - Initialize %wpa_supplicant 3176 * @params: Parameters for %wpa_supplicant 3177 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure 3178 * 3179 * This function is used to initialize %wpa_supplicant. After successful 3180 * initialization, the returned data pointer can be used to add and remove 3181 * network interfaces, and eventually, to deinitialize %wpa_supplicant. 3182 */ 3183struct wpa_global * wpa_supplicant_init(struct wpa_params *params) 3184{ 3185 struct wpa_global *global; 3186 int ret, i; 3187 3188 if (params == NULL) 3189 return NULL; 3190 3191#ifdef CONFIG_DRIVER_NDIS 3192 { 3193 void driver_ndis_init_ops(void); 3194 driver_ndis_init_ops(); 3195 } 3196#endif /* CONFIG_DRIVER_NDIS */ 3197 3198#ifndef CONFIG_NO_WPA_MSG 3199 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb); 3200#endif /* CONFIG_NO_WPA_MSG */ 3201 3202 wpa_debug_open_file(params->wpa_debug_file_path); 3203 if (params->wpa_debug_syslog) 3204 wpa_debug_open_syslog(); 3205 if (params->wpa_debug_tracing) { 3206 ret = wpa_debug_open_linux_tracing(); 3207 if (ret) { 3208 wpa_printf(MSG_ERROR, 3209 "Failed to enable trace logging"); 3210 return NULL; 3211 } 3212 } 3213 3214 ret = eap_register_methods(); 3215 if (ret) { 3216 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 3217 if (ret == -2) 3218 wpa_printf(MSG_ERROR, "Two or more EAP methods used " 3219 "the same EAP type."); 3220 return NULL; 3221 } 3222 3223 global = os_zalloc(sizeof(*global)); 3224 if (global == NULL) 3225 return NULL; 3226 dl_list_init(&global->p2p_srv_bonjour); 3227 dl_list_init(&global->p2p_srv_upnp); 3228 global->params.daemonize = params->daemonize; 3229 global->params.wait_for_monitor = params->wait_for_monitor; 3230 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface; 3231 if (params->pid_file) 3232 global->params.pid_file = os_strdup(params->pid_file); 3233 if (params->ctrl_interface) 3234 global->params.ctrl_interface = 3235 os_strdup(params->ctrl_interface); 3236 if (params->override_driver) 3237 global->params.override_driver = 3238 os_strdup(params->override_driver); 3239 if (params->override_ctrl_interface) 3240 global->params.override_ctrl_interface = 3241 os_strdup(params->override_ctrl_interface); 3242 wpa_debug_level = global->params.wpa_debug_level = 3243 params->wpa_debug_level; 3244 wpa_debug_show_keys = global->params.wpa_debug_show_keys = 3245 params->wpa_debug_show_keys; 3246 wpa_debug_timestamp = global->params.wpa_debug_timestamp = 3247 params->wpa_debug_timestamp; 3248 3249 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR); 3250 3251 if (eloop_init()) { 3252 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 3253 wpa_supplicant_deinit(global); 3254 return NULL; 3255 } 3256 3257 random_init(params->entropy_file); 3258 3259 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global); 3260 if (global->ctrl_iface == NULL) { 3261 wpa_supplicant_deinit(global); 3262 return NULL; 3263 } 3264 3265 if (wpas_notify_supplicant_initialized(global)) { 3266 wpa_supplicant_deinit(global); 3267 return NULL; 3268 } 3269 3270 for (i = 0; wpa_drivers[i]; i++) 3271 global->drv_count++; 3272 if (global->drv_count == 0) { 3273 wpa_printf(MSG_ERROR, "No drivers enabled"); 3274 wpa_supplicant_deinit(global); 3275 return NULL; 3276 } 3277 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *)); 3278 if (global->drv_priv == NULL) { 3279 wpa_supplicant_deinit(global); 3280 return NULL; 3281 } 3282 3283#ifdef CONFIG_WIFI_DISPLAY 3284 if (wifi_display_init(global) < 0) { 3285 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display"); 3286 wpa_supplicant_deinit(global); 3287 return NULL; 3288 } 3289#endif /* CONFIG_WIFI_DISPLAY */ 3290 3291 return global; 3292} 3293 3294 3295/** 3296 * wpa_supplicant_run - Run the %wpa_supplicant main event loop 3297 * @global: Pointer to global data from wpa_supplicant_init() 3298 * Returns: 0 after successful event loop run, -1 on failure 3299 * 3300 * This function starts the main event loop and continues running as long as 3301 * there are any remaining events. In most cases, this function is running as 3302 * long as the %wpa_supplicant process in still in use. 3303 */ 3304int wpa_supplicant_run(struct wpa_global *global) 3305{ 3306 struct wpa_supplicant *wpa_s; 3307 3308 if (global->params.daemonize && 3309 wpa_supplicant_daemon(global->params.pid_file)) 3310 return -1; 3311 3312 if (global->params.wait_for_monitor) { 3313 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) 3314 if (wpa_s->ctrl_iface) 3315 wpa_supplicant_ctrl_iface_wait( 3316 wpa_s->ctrl_iface); 3317 } 3318 3319 eloop_register_signal_terminate(wpa_supplicant_terminate, global); 3320 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); 3321 3322 eloop_run(); 3323 3324 return 0; 3325} 3326 3327 3328/** 3329 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant 3330 * @global: Pointer to global data from wpa_supplicant_init() 3331 * 3332 * This function is called to deinitialize %wpa_supplicant and to free all 3333 * allocated resources. Remaining network interfaces will also be removed. 3334 */ 3335void wpa_supplicant_deinit(struct wpa_global *global) 3336{ 3337 int i; 3338 3339 if (global == NULL) 3340 return; 3341 3342#ifdef CONFIG_WIFI_DISPLAY 3343 wifi_display_deinit(global); 3344#endif /* CONFIG_WIFI_DISPLAY */ 3345#ifdef CONFIG_P2P 3346 wpas_p2p_deinit_global(global); 3347#endif /* CONFIG_P2P */ 3348 3349 while (global->ifaces) 3350 wpa_supplicant_remove_iface(global, global->ifaces, 1); 3351 3352 if (global->ctrl_iface) 3353 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface); 3354 3355 wpas_notify_supplicant_deinitialized(global); 3356 3357 eap_peer_unregister_methods(); 3358#ifdef CONFIG_AP 3359 eap_server_unregister_methods(); 3360#endif /* CONFIG_AP */ 3361 3362 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) { 3363 if (!global->drv_priv[i]) 3364 continue; 3365 wpa_drivers[i]->global_deinit(global->drv_priv[i]); 3366 } 3367 os_free(global->drv_priv); 3368 3369 random_deinit(); 3370 3371 eloop_destroy(); 3372 3373 if (global->params.pid_file) { 3374 os_daemonize_terminate(global->params.pid_file); 3375 os_free(global->params.pid_file); 3376 } 3377 os_free(global->params.ctrl_interface); 3378 os_free(global->params.override_driver); 3379 os_free(global->params.override_ctrl_interface); 3380 3381 os_free(global->p2p_disallow_freq); 3382 3383 os_free(global); 3384 wpa_debug_close_syslog(); 3385 wpa_debug_close_file(); 3386 wpa_debug_close_linux_tracing(); 3387} 3388 3389 3390void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s) 3391{ 3392 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 3393 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 3394 char country[3]; 3395 country[0] = wpa_s->conf->country[0]; 3396 country[1] = wpa_s->conf->country[1]; 3397 country[2] = '\0'; 3398 if (wpa_drv_set_country(wpa_s, country) < 0) { 3399 wpa_printf(MSG_ERROR, "Failed to set country code " 3400 "'%s'", country); 3401 } 3402 } 3403 3404 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND) 3405 wpas_init_ext_pw(wpa_s); 3406 3407#ifdef CONFIG_WPS 3408 wpas_wps_update_config(wpa_s); 3409#endif /* CONFIG_WPS */ 3410 3411#ifdef CONFIG_P2P 3412 wpas_p2p_update_config(wpa_s); 3413#endif /* CONFIG_P2P */ 3414 3415 wpa_s->conf->changed_parameters = 0; 3416} 3417 3418 3419static void add_freq(int *freqs, int *num_freqs, int freq) 3420{ 3421 int i; 3422 3423 for (i = 0; i < *num_freqs; i++) { 3424 if (freqs[i] == freq) 3425 return; 3426 } 3427 3428 freqs[*num_freqs] = freq; 3429 (*num_freqs)++; 3430} 3431 3432 3433static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s) 3434{ 3435 struct wpa_bss *bss, *cbss; 3436 const int max_freqs = 10; 3437 int *freqs; 3438 int num_freqs = 0; 3439 3440 freqs = os_zalloc(sizeof(int) * (max_freqs + 1)); 3441 if (freqs == NULL) 3442 return NULL; 3443 3444 cbss = wpa_s->current_bss; 3445 3446 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 3447 if (bss == cbss) 3448 continue; 3449 if (bss->ssid_len == cbss->ssid_len && 3450 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 && 3451 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) { 3452 add_freq(freqs, &num_freqs, bss->freq); 3453 if (num_freqs == max_freqs) 3454 break; 3455 } 3456 } 3457 3458 if (num_freqs == 0) { 3459 os_free(freqs); 3460 freqs = NULL; 3461 } 3462 3463 return freqs; 3464} 3465 3466 3467void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid) 3468{ 3469 int timeout; 3470 int count; 3471 int *freqs = NULL; 3472 3473 /* 3474 * Remove possible authentication timeout since the connection failed. 3475 */ 3476 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 3477 3478 /* 3479 * Add the failed BSSID into the blacklist and speed up next scan 3480 * attempt if there could be other APs that could accept association. 3481 * The current blacklist count indicates how many times we have tried 3482 * connecting to this AP and multiple attempts mean that other APs are 3483 * either not available or has already been tried, so that we can start 3484 * increasing the delay here to avoid constant scanning. 3485 */ 3486 count = wpa_blacklist_add(wpa_s, bssid); 3487 if (count == 1 && wpa_s->current_bss) { 3488 /* 3489 * This BSS was not in the blacklist before. If there is 3490 * another BSS available for the same ESS, we should try that 3491 * next. Otherwise, we may as well try this one once more 3492 * before allowing other, likely worse, ESSes to be considered. 3493 */ 3494 freqs = get_bss_freqs_in_ess(wpa_s); 3495 if (freqs) { 3496 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS " 3497 "has been seen; try it next"); 3498 wpa_blacklist_add(wpa_s, bssid); 3499 /* 3500 * On the next scan, go through only the known channels 3501 * used in this ESS based on previous scans to speed up 3502 * common load balancing use case. 3503 */ 3504 os_free(wpa_s->next_scan_freqs); 3505 wpa_s->next_scan_freqs = freqs; 3506 } 3507 } 3508 3509 /* 3510 * Add previous failure count in case the temporary blacklist was 3511 * cleared due to no other BSSes being available. 3512 */ 3513 count += wpa_s->extra_blacklist_count; 3514 3515 switch (count) { 3516 case 1: 3517 timeout = 100; 3518 break; 3519 case 2: 3520 timeout = 500; 3521 break; 3522 case 3: 3523 timeout = 1000; 3524 break; 3525 case 4: 3526 timeout = 5000; 3527 break; 3528 default: 3529 timeout = 10000; 3530 break; 3531 } 3532 3533 wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d " 3534 "ms", count, timeout); 3535 3536 /* 3537 * TODO: if more than one possible AP is available in scan results, 3538 * could try the other ones before requesting a new scan. 3539 */ 3540 wpa_supplicant_req_scan(wpa_s, timeout / 1000, 3541 1000 * (timeout % 1000)); 3542 3543#ifdef CONFIG_P2P 3544 if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && 3545 wpa_s->global->p2p != NULL) { 3546 wpa_s->global->p2p_cb_on_scan_complete = 0; 3547 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { 3548 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " 3549 "continued after failed association"); 3550 } 3551 } 3552#endif /* CONFIG_P2P */ 3553} 3554 3555 3556int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s) 3557{ 3558 return wpa_s->conf->ap_scan == 2 || 3559 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION); 3560} 3561 3562 3563#if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW) 3564int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s, 3565 struct wpa_ssid *ssid, 3566 const char *field, 3567 const char *value) 3568{ 3569#ifdef IEEE8021X_EAPOL 3570 struct eap_peer_config *eap = &ssid->eap; 3571 3572 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field); 3573 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value", 3574 (const u8 *) value, os_strlen(value)); 3575 3576 switch (wpa_supplicant_ctrl_req_from_string(field)) { 3577 case WPA_CTRL_REQ_EAP_IDENTITY: 3578 os_free(eap->identity); 3579 eap->identity = (u8 *) os_strdup(value); 3580 eap->identity_len = os_strlen(value); 3581 eap->pending_req_identity = 0; 3582 if (ssid == wpa_s->current_ssid) 3583 wpa_s->reassociate = 1; 3584 break; 3585 case WPA_CTRL_REQ_EAP_PASSWORD: 3586 os_free(eap->password); 3587 eap->password = (u8 *) os_strdup(value); 3588 eap->password_len = os_strlen(value); 3589 eap->pending_req_password = 0; 3590 if (ssid == wpa_s->current_ssid) 3591 wpa_s->reassociate = 1; 3592 break; 3593 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 3594 os_free(eap->new_password); 3595 eap->new_password = (u8 *) os_strdup(value); 3596 eap->new_password_len = os_strlen(value); 3597 eap->pending_req_new_password = 0; 3598 if (ssid == wpa_s->current_ssid) 3599 wpa_s->reassociate = 1; 3600 break; 3601 case WPA_CTRL_REQ_EAP_PIN: 3602 os_free(eap->pin); 3603 eap->pin = os_strdup(value); 3604 eap->pending_req_pin = 0; 3605 if (ssid == wpa_s->current_ssid) 3606 wpa_s->reassociate = 1; 3607 break; 3608 case WPA_CTRL_REQ_EAP_OTP: 3609 os_free(eap->otp); 3610 eap->otp = (u8 *) os_strdup(value); 3611 eap->otp_len = os_strlen(value); 3612 os_free(eap->pending_req_otp); 3613 eap->pending_req_otp = NULL; 3614 eap->pending_req_otp_len = 0; 3615 break; 3616 case WPA_CTRL_REQ_EAP_PASSPHRASE: 3617 os_free(eap->private_key_passwd); 3618 eap->private_key_passwd = (u8 *) os_strdup(value); 3619 eap->pending_req_passphrase = 0; 3620 if (ssid == wpa_s->current_ssid) 3621 wpa_s->reassociate = 1; 3622 break; 3623 default: 3624 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field); 3625 return -1; 3626 } 3627 3628 return 0; 3629#else /* IEEE8021X_EAPOL */ 3630 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included"); 3631 return -1; 3632#endif /* IEEE8021X_EAPOL */ 3633} 3634#endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */ 3635 3636 3637int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 3638{ 3639 int i; 3640 unsigned int drv_enc; 3641 3642 if (ssid == NULL) 3643 return 1; 3644 3645 if (ssid->disabled) 3646 return 1; 3647 3648 if (wpa_s && wpa_s->drv_capa_known) 3649 drv_enc = wpa_s->drv_enc; 3650 else 3651 drv_enc = (unsigned int) -1; 3652 3653 for (i = 0; i < NUM_WEP_KEYS; i++) { 3654 size_t len = ssid->wep_key_len[i]; 3655 if (len == 0) 3656 continue; 3657 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40)) 3658 continue; 3659 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104)) 3660 continue; 3661 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128)) 3662 continue; 3663 return 1; /* invalid WEP key */ 3664 } 3665 3666 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 3667 !ssid->ext_psk) 3668 return 1; 3669 3670 return 0; 3671} 3672 3673 3674int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s) 3675{ 3676 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P) 3677 return 1; 3678 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA) 3679 return 0; 3680 return -1; 3681} 3682 3683 3684void wpas_auth_failed(struct wpa_supplicant *wpa_s) 3685{ 3686 struct wpa_ssid *ssid = wpa_s->current_ssid; 3687 int dur; 3688 struct os_time now; 3689 3690 if (ssid == NULL) { 3691 wpa_printf(MSG_DEBUG, "Authentication failure but no known " 3692 "SSID block"); 3693 return; 3694 } 3695 3696 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS) 3697 return; 3698 3699 ssid->auth_failures++; 3700 if (ssid->auth_failures > 50) 3701 dur = 300; 3702 else if (ssid->auth_failures > 20) 3703 dur = 120; 3704 else if (ssid->auth_failures > 10) 3705 dur = 60; 3706 else if (ssid->auth_failures > 5) 3707 dur = 30; 3708 else if (ssid->auth_failures > 1) 3709 dur = 20; 3710 else 3711 dur = 10; 3712 3713 os_get_time(&now); 3714 if (now.sec + dur <= ssid->disabled_until.sec) 3715 return; 3716 3717 ssid->disabled_until.sec = now.sec + dur; 3718 3719 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED 3720 "id=%d ssid=\"%s\" auth_failures=%u duration=%d", 3721 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 3722 ssid->auth_failures, dur); 3723} 3724 3725 3726void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s, 3727 struct wpa_ssid *ssid, int clear_failures) 3728{ 3729 if (ssid == NULL) 3730 return; 3731 3732 if (ssid->disabled_until.sec) { 3733 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED 3734 "id=%d ssid=\"%s\"", 3735 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 3736 } 3737 ssid->disabled_until.sec = 0; 3738 ssid->disabled_until.usec = 0; 3739 if (clear_failures) 3740 ssid->auth_failures = 0; 3741} 3742 3743 3744int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid) 3745{ 3746 size_t i; 3747 3748 if (wpa_s->disallow_aps_bssid == NULL) 3749 return 0; 3750 3751 for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) { 3752 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN, 3753 bssid, ETH_ALEN) == 0) 3754 return 1; 3755 } 3756 3757 return 0; 3758} 3759 3760 3761int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid, 3762 size_t ssid_len) 3763{ 3764 size_t i; 3765 3766 if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL) 3767 return 0; 3768 3769 for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) { 3770 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i]; 3771 if (ssid_len == s->ssid_len && 3772 os_memcmp(ssid, s->ssid, ssid_len) == 0) 3773 return 1; 3774 } 3775 3776 return 0; 3777} 3778 3779 3780/** 3781 * wpas_request_connection - Request a new connection 3782 * @wpa_s: Pointer to the network interface 3783 * 3784 * This function is used to request a new connection to be found. It will mark 3785 * the interface to allow reassociation and request a new scan to find a 3786 * suitable network to connect to. 3787 */ 3788void wpas_request_connection(struct wpa_supplicant *wpa_s) 3789{ 3790 wpa_s->normal_scans = 0; 3791 wpa_supplicant_reinit_autoscan(wpa_s); 3792 wpa_s->extra_blacklist_count = 0; 3793 wpa_s->disconnected = 0; 3794 wpa_s->reassociate = 1; 3795 wpa_supplicant_req_scan(wpa_s, 0, 0); 3796} 3797