wpa_supplicant.c revision af9da3180dc20f57df1fc1e1811f3df9fa9e6ab5
1/* 2 * WPA Supplicant 3 * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 * 8 * This file implements functions for registering and unregistering 9 * %wpa_supplicant interfaces. In addition, this file contains number of 10 * functions for managing network connections. 11 */ 12 13#include "includes.h" 14 15#include "common.h" 16#include "crypto/random.h" 17#include "crypto/sha1.h" 18#include "eapol_supp/eapol_supp_sm.h" 19#include "eap_peer/eap.h" 20#include "eap_peer/eap_proxy.h" 21#include "eap_server/eap_methods.h" 22#include "rsn_supp/wpa.h" 23#include "eloop.h" 24#include "config.h" 25#include "utils/ext_password.h" 26#include "l2_packet/l2_packet.h" 27#include "wpa_supplicant_i.h" 28#include "driver_i.h" 29#include "ctrl_iface.h" 30#include "pcsc_funcs.h" 31#include "common/version.h" 32#include "rsn_supp/preauth.h" 33#include "rsn_supp/pmksa_cache.h" 34#include "common/wpa_ctrl.h" 35#include "common/ieee802_11_defs.h" 36#include "common/hw_features_common.h" 37#include "p2p/p2p.h" 38#include "blacklist.h" 39#include "wpas_glue.h" 40#include "wps_supplicant.h" 41#include "ibss_rsn.h" 42#include "sme.h" 43#include "gas_query.h" 44#include "ap.h" 45#include "p2p_supplicant.h" 46#include "wifi_display.h" 47#include "notify.h" 48#include "bgscan.h" 49#include "autoscan.h" 50#include "bss.h" 51#include "scan.h" 52#include "offchannel.h" 53#include "hs20_supplicant.h" 54#include "wnm_sta.h" 55#include "wpas_kay.h" 56#include "mesh.h" 57 58const char *wpa_supplicant_version = 59"wpa_supplicant v" VERSION_STR "\n" 60"Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> and contributors"; 61 62const char *wpa_supplicant_license = 63"This software may be distributed under the terms of the BSD license.\n" 64"See README for more details.\n" 65#ifdef EAP_TLS_OPENSSL 66"\nThis product includes software developed by the OpenSSL Project\n" 67"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n" 68#endif /* EAP_TLS_OPENSSL */ 69; 70 71#ifndef CONFIG_NO_STDOUT_DEBUG 72/* Long text divided into parts in order to fit in C89 strings size limits. */ 73const char *wpa_supplicant_full_license1 = 74""; 75const char *wpa_supplicant_full_license2 = 76"This software may be distributed under the terms of the BSD license.\n" 77"\n" 78"Redistribution and use in source and binary forms, with or without\n" 79"modification, are permitted provided that the following conditions are\n" 80"met:\n" 81"\n"; 82const char *wpa_supplicant_full_license3 = 83"1. Redistributions of source code must retain the above copyright\n" 84" notice, this list of conditions and the following disclaimer.\n" 85"\n" 86"2. Redistributions in binary form must reproduce the above copyright\n" 87" notice, this list of conditions and the following disclaimer in the\n" 88" documentation and/or other materials provided with the distribution.\n" 89"\n"; 90const char *wpa_supplicant_full_license4 = 91"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n" 92" names of its contributors may be used to endorse or promote products\n" 93" derived from this software without specific prior written permission.\n" 94"\n" 95"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n" 96"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n" 97"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n" 98"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"; 99const char *wpa_supplicant_full_license5 = 100"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" 101"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" 102"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n" 103"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n" 104"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" 105"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n" 106"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" 107"\n"; 108#endif /* CONFIG_NO_STDOUT_DEBUG */ 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 129int 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 int ret; 137 138 /* IBSS/WPA-None uses only one key (Group) for both receiving and 139 * sending unicast and multicast packets. */ 140 141 if (ssid->mode != WPAS_MODE_IBSS) { 142 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not " 143 "IBSS/ad-hoc) for WPA-None", ssid->mode); 144 return -1; 145 } 146 147 if (!ssid->psk_set) { 148 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for " 149 "WPA-None"); 150 return -1; 151 } 152 153 switch (wpa_s->group_cipher) { 154 case WPA_CIPHER_CCMP: 155 os_memcpy(key, ssid->psk, 16); 156 keylen = 16; 157 alg = WPA_ALG_CCMP; 158 break; 159 case WPA_CIPHER_GCMP: 160 os_memcpy(key, ssid->psk, 16); 161 keylen = 16; 162 alg = WPA_ALG_GCMP; 163 break; 164 case WPA_CIPHER_TKIP: 165 /* WPA-None uses the same Michael MIC key for both TX and RX */ 166 os_memcpy(key, ssid->psk, 16 + 8); 167 os_memcpy(key + 16 + 8, ssid->psk + 16, 8); 168 keylen = 32; 169 alg = WPA_ALG_TKIP; 170 break; 171 default: 172 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for " 173 "WPA-None", wpa_s->group_cipher); 174 return -1; 175 } 176 177 /* TODO: should actually remember the previously used seq#, both for TX 178 * and RX from each STA.. */ 179 180 ret = wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen); 181 os_memset(key, 0, sizeof(key)); 182 return ret; 183} 184 185 186static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx) 187{ 188 struct wpa_supplicant *wpa_s = eloop_ctx; 189 const u8 *bssid = wpa_s->bssid; 190 if (is_zero_ether_addr(bssid)) 191 bssid = wpa_s->pending_bssid; 192 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.", 193 MAC2STR(bssid)); 194 wpa_blacklist_add(wpa_s, bssid); 195 wpa_sm_notify_disassoc(wpa_s->wpa); 196 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 197 wpa_s->reassociate = 1; 198 199 /* 200 * If we timed out, the AP or the local radio may be busy. 201 * So, wait a second until scanning again. 202 */ 203 wpa_supplicant_req_scan(wpa_s, 1, 0); 204} 205 206 207/** 208 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication 209 * @wpa_s: Pointer to wpa_supplicant data 210 * @sec: Number of seconds after which to time out authentication 211 * @usec: Number of microseconds after which to time out authentication 212 * 213 * This function is used to schedule a timeout for the current authentication 214 * attempt. 215 */ 216void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s, 217 int sec, int usec) 218{ 219 if (wpa_s->conf->ap_scan == 0 && 220 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 221 return; 222 223 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec " 224 "%d usec", sec, usec); 225 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 226 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL); 227} 228 229 230/** 231 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout 232 * @wpa_s: Pointer to wpa_supplicant data 233 * 234 * This function is used to cancel authentication timeout scheduled with 235 * wpa_supplicant_req_auth_timeout() and it is called when authentication has 236 * been completed. 237 */ 238void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s) 239{ 240 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout"); 241 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 242 wpa_blacklist_del(wpa_s, wpa_s->bssid); 243} 244 245 246/** 247 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine 248 * @wpa_s: Pointer to wpa_supplicant data 249 * 250 * This function is used to configure EAPOL state machine based on the selected 251 * authentication mode. 252 */ 253void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s) 254{ 255#ifdef IEEE8021X_EAPOL 256 struct eapol_config eapol_conf; 257 struct wpa_ssid *ssid = wpa_s->current_ssid; 258 259#ifdef CONFIG_IBSS_RSN 260 if (ssid->mode == WPAS_MODE_IBSS && 261 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 262 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 263 /* 264 * RSN IBSS authentication is per-STA and we can disable the 265 * per-BSSID EAPOL authentication. 266 */ 267 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 268 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 269 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 270 return; 271 } 272#endif /* CONFIG_IBSS_RSN */ 273 274 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 275 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 276 277 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 278 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 279 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 280 else 281 eapol_sm_notify_portControl(wpa_s->eapol, Auto); 282 283 os_memset(&eapol_conf, 0, sizeof(eapol_conf)); 284 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 285 eapol_conf.accept_802_1x_keys = 1; 286 eapol_conf.required_keys = 0; 287 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) { 288 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST; 289 } 290 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) { 291 eapol_conf.required_keys |= 292 EAPOL_REQUIRE_KEY_BROADCAST; 293 } 294 295 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED) 296 eapol_conf.required_keys = 0; 297 } 298 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth; 299 eapol_conf.workaround = ssid->eap_workaround; 300 eapol_conf.eap_disabled = 301 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) && 302 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA && 303 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS; 304 eapol_conf.external_sim = wpa_s->conf->external_sim; 305 306#ifdef CONFIG_WPS 307 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) { 308 eapol_conf.wps |= EAPOL_LOCAL_WPS_IN_USE; 309 if (wpa_s->current_bss) { 310 struct wpabuf *ie; 311 ie = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss, 312 WPS_IE_VENDOR_TYPE); 313 if (ie) { 314 if (wps_is_20(ie)) 315 eapol_conf.wps |= 316 EAPOL_PEER_IS_WPS20_AP; 317 wpabuf_free(ie); 318 } 319 } 320 } 321#endif /* CONFIG_WPS */ 322 323 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf); 324 325 ieee802_1x_alloc_kay_sm(wpa_s, ssid); 326#endif /* IEEE8021X_EAPOL */ 327} 328 329 330/** 331 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode 332 * @wpa_s: Pointer to wpa_supplicant data 333 * @ssid: Configuration data for the network 334 * 335 * This function is used to configure WPA state machine and related parameters 336 * to a mode where WPA is not enabled. This is called as part of the 337 * authentication configuration when the selected network does not use WPA. 338 */ 339void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s, 340 struct wpa_ssid *ssid) 341{ 342 int i; 343 344 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 345 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS; 346 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) 347 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 348 else 349 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE; 350 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 351 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 352 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 353 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 354 wpa_s->group_cipher = WPA_CIPHER_NONE; 355 wpa_s->mgmt_group_cipher = 0; 356 357 for (i = 0; i < NUM_WEP_KEYS; i++) { 358 if (ssid->wep_key_len[i] > 5) { 359 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104; 360 wpa_s->group_cipher = WPA_CIPHER_WEP104; 361 break; 362 } else if (ssid->wep_key_len[i] > 0) { 363 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40; 364 wpa_s->group_cipher = WPA_CIPHER_WEP40; 365 break; 366 } 367 } 368 369 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0); 370 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 371 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 372 wpa_s->pairwise_cipher); 373 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 374#ifdef CONFIG_IEEE80211W 375 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 376 wpa_s->mgmt_group_cipher); 377#endif /* CONFIG_IEEE80211W */ 378 379 pmksa_cache_clear_current(wpa_s->wpa); 380} 381 382 383void free_hw_features(struct wpa_supplicant *wpa_s) 384{ 385 int i; 386 if (wpa_s->hw.modes == NULL) 387 return; 388 389 for (i = 0; i < wpa_s->hw.num_modes; i++) { 390 os_free(wpa_s->hw.modes[i].channels); 391 os_free(wpa_s->hw.modes[i].rates); 392 } 393 394 os_free(wpa_s->hw.modes); 395 wpa_s->hw.modes = NULL; 396} 397 398 399static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s) 400{ 401 int i; 402 403 bgscan_deinit(wpa_s); 404 autoscan_deinit(wpa_s); 405 scard_deinit(wpa_s->scard); 406 wpa_s->scard = NULL; 407 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL); 408 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL); 409 l2_packet_deinit(wpa_s->l2); 410 wpa_s->l2 = NULL; 411 if (wpa_s->l2_br) { 412 l2_packet_deinit(wpa_s->l2_br); 413 wpa_s->l2_br = NULL; 414 } 415#ifdef CONFIG_TESTING_OPTIONS 416 l2_packet_deinit(wpa_s->l2_test); 417 wpa_s->l2_test = NULL; 418#endif /* CONFIG_TESTING_OPTIONS */ 419 420 if (wpa_s->conf != NULL) { 421 struct wpa_ssid *ssid; 422 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 423 wpas_notify_network_removed(wpa_s, ssid); 424 } 425 426 os_free(wpa_s->confname); 427 wpa_s->confname = NULL; 428 429 os_free(wpa_s->confanother); 430 wpa_s->confanother = NULL; 431 432 wpa_sm_set_eapol(wpa_s->wpa, NULL); 433 eapol_sm_deinit(wpa_s->eapol); 434 wpa_s->eapol = NULL; 435 436 rsn_preauth_deinit(wpa_s->wpa); 437 438#ifdef CONFIG_TDLS 439 wpa_tdls_deinit(wpa_s->wpa); 440#endif /* CONFIG_TDLS */ 441 442 wmm_ac_clear_saved_tspecs(wpa_s); 443 pmksa_candidate_free(wpa_s->wpa); 444 wpa_sm_deinit(wpa_s->wpa); 445 wpa_s->wpa = NULL; 446 wpa_blacklist_clear(wpa_s); 447 448 wpa_bss_deinit(wpa_s); 449 450 wpa_supplicant_cancel_delayed_sched_scan(wpa_s); 451 wpa_supplicant_cancel_scan(wpa_s); 452 wpa_supplicant_cancel_auth_timeout(wpa_s); 453 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL); 454#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT 455 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report, 456 wpa_s, NULL); 457#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ 458 459 eloop_cancel_timeout(wpas_network_reenabled, wpa_s, NULL); 460 461 wpas_wps_deinit(wpa_s); 462 463 wpabuf_free(wpa_s->pending_eapol_rx); 464 wpa_s->pending_eapol_rx = NULL; 465 466#ifdef CONFIG_IBSS_RSN 467 ibss_rsn_deinit(wpa_s->ibss_rsn); 468 wpa_s->ibss_rsn = NULL; 469#endif /* CONFIG_IBSS_RSN */ 470 471 sme_deinit(wpa_s); 472 473#ifdef CONFIG_AP 474 wpa_supplicant_ap_deinit(wpa_s); 475#endif /* CONFIG_AP */ 476 477 wpas_p2p_deinit(wpa_s); 478 479#ifdef CONFIG_OFFCHANNEL 480 offchannel_deinit(wpa_s); 481#endif /* CONFIG_OFFCHANNEL */ 482 483 wpa_supplicant_cancel_sched_scan(wpa_s); 484 485 os_free(wpa_s->next_scan_freqs); 486 wpa_s->next_scan_freqs = NULL; 487 488 os_free(wpa_s->manual_scan_freqs); 489 wpa_s->manual_scan_freqs = NULL; 490 491 os_free(wpa_s->manual_sched_scan_freqs); 492 wpa_s->manual_sched_scan_freqs = NULL; 493 494 wpas_mac_addr_rand_scan_clear(wpa_s, MAC_ADDR_RAND_ALL); 495 496 gas_query_deinit(wpa_s->gas); 497 wpa_s->gas = NULL; 498 499 free_hw_features(wpa_s); 500 501 ieee802_1x_dealloc_kay_sm(wpa_s); 502 503 os_free(wpa_s->bssid_filter); 504 wpa_s->bssid_filter = NULL; 505 506 os_free(wpa_s->disallow_aps_bssid); 507 wpa_s->disallow_aps_bssid = NULL; 508 os_free(wpa_s->disallow_aps_ssid); 509 wpa_s->disallow_aps_ssid = NULL; 510 511 wnm_bss_keep_alive_deinit(wpa_s); 512#ifdef CONFIG_WNM 513 wnm_deallocate_memory(wpa_s); 514#endif /* CONFIG_WNM */ 515 516 ext_password_deinit(wpa_s->ext_pw); 517 wpa_s->ext_pw = NULL; 518 519 wpabuf_free(wpa_s->last_gas_resp); 520 wpa_s->last_gas_resp = NULL; 521 wpabuf_free(wpa_s->prev_gas_resp); 522 wpa_s->prev_gas_resp = NULL; 523 524 os_free(wpa_s->last_scan_res); 525 wpa_s->last_scan_res = NULL; 526 527#ifdef CONFIG_HS20 528 hs20_deinit(wpa_s); 529#endif /* CONFIG_HS20 */ 530 531 for (i = 0; i < NUM_VENDOR_ELEM_FRAMES; i++) { 532 wpabuf_free(wpa_s->vendor_elem[i]); 533 wpa_s->vendor_elem[i] = NULL; 534 } 535 536 wmm_ac_notify_disassoc(wpa_s); 537} 538 539 540/** 541 * wpa_clear_keys - Clear keys configured for the driver 542 * @wpa_s: Pointer to wpa_supplicant data 543 * @addr: Previously used BSSID or %NULL if not available 544 * 545 * This function clears the encryption keys that has been previously configured 546 * for the driver. 547 */ 548void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr) 549{ 550 int i, max; 551 552#ifdef CONFIG_IEEE80211W 553 max = 6; 554#else /* CONFIG_IEEE80211W */ 555 max = 4; 556#endif /* CONFIG_IEEE80211W */ 557 558 /* MLME-DELETEKEYS.request */ 559 for (i = 0; i < max; i++) { 560 if (wpa_s->keys_cleared & BIT(i)) 561 continue; 562 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, i, 0, NULL, 0, 563 NULL, 0); 564 } 565 if (!(wpa_s->keys_cleared & BIT(0)) && addr && 566 !is_zero_ether_addr(addr)) { 567 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL, 568 0); 569 /* MLME-SETPROTECTION.request(None) */ 570 wpa_drv_mlme_setprotection( 571 wpa_s, addr, 572 MLME_SETPROTECTION_PROTECT_TYPE_NONE, 573 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); 574 } 575 wpa_s->keys_cleared = (u32) -1; 576} 577 578 579/** 580 * wpa_supplicant_state_txt - Get the connection state name as a text string 581 * @state: State (wpa_state; WPA_*) 582 * Returns: The state name as a printable text string 583 */ 584const char * wpa_supplicant_state_txt(enum wpa_states state) 585{ 586 switch (state) { 587 case WPA_DISCONNECTED: 588 return "DISCONNECTED"; 589 case WPA_INACTIVE: 590 return "INACTIVE"; 591 case WPA_INTERFACE_DISABLED: 592 return "INTERFACE_DISABLED"; 593 case WPA_SCANNING: 594 return "SCANNING"; 595 case WPA_AUTHENTICATING: 596 return "AUTHENTICATING"; 597 case WPA_ASSOCIATING: 598 return "ASSOCIATING"; 599 case WPA_ASSOCIATED: 600 return "ASSOCIATED"; 601 case WPA_4WAY_HANDSHAKE: 602 return "4WAY_HANDSHAKE"; 603 case WPA_GROUP_HANDSHAKE: 604 return "GROUP_HANDSHAKE"; 605 case WPA_COMPLETED: 606 return "COMPLETED"; 607 default: 608 return "UNKNOWN"; 609 } 610} 611 612 613#ifdef CONFIG_BGSCAN 614 615static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s) 616{ 617 const char *name; 618 619 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) 620 name = wpa_s->current_ssid->bgscan; 621 else 622 name = wpa_s->conf->bgscan; 623 if (name == NULL || name[0] == '\0') 624 return; 625 if (wpas_driver_bss_selection(wpa_s)) 626 return; 627 if (wpa_s->current_ssid == wpa_s->bgscan_ssid) 628 return; 629#ifdef CONFIG_P2P 630 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 631 return; 632#endif /* CONFIG_P2P */ 633 634 bgscan_deinit(wpa_s); 635 if (wpa_s->current_ssid) { 636 if (bgscan_init(wpa_s, wpa_s->current_ssid, name)) { 637 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 638 "bgscan"); 639 /* 640 * Live without bgscan; it is only used as a roaming 641 * optimization, so the initial connection is not 642 * affected. 643 */ 644 } else { 645 struct wpa_scan_results *scan_res; 646 wpa_s->bgscan_ssid = wpa_s->current_ssid; 647 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 648 0); 649 if (scan_res) { 650 bgscan_notify_scan(wpa_s, scan_res); 651 wpa_scan_results_free(scan_res); 652 } 653 } 654 } else 655 wpa_s->bgscan_ssid = NULL; 656} 657 658 659static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s) 660{ 661 if (wpa_s->bgscan_ssid != NULL) { 662 bgscan_deinit(wpa_s); 663 wpa_s->bgscan_ssid = NULL; 664 } 665} 666 667#endif /* CONFIG_BGSCAN */ 668 669 670static void wpa_supplicant_start_autoscan(struct wpa_supplicant *wpa_s) 671{ 672 if (autoscan_init(wpa_s, 0)) 673 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize autoscan"); 674} 675 676 677static void wpa_supplicant_stop_autoscan(struct wpa_supplicant *wpa_s) 678{ 679 autoscan_deinit(wpa_s); 680} 681 682 683void wpa_supplicant_reinit_autoscan(struct wpa_supplicant *wpa_s) 684{ 685 if (wpa_s->wpa_state == WPA_DISCONNECTED || 686 wpa_s->wpa_state == WPA_SCANNING) { 687 autoscan_deinit(wpa_s); 688 wpa_supplicant_start_autoscan(wpa_s); 689 } 690} 691 692 693/** 694 * wpa_supplicant_set_state - Set current connection state 695 * @wpa_s: Pointer to wpa_supplicant data 696 * @state: The new connection state 697 * 698 * This function is called whenever the connection state changes, e.g., 699 * association is completed for WPA/WPA2 4-Way Handshake is started. 700 */ 701void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, 702 enum wpa_states state) 703{ 704 enum wpa_states old_state = wpa_s->wpa_state; 705 706 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s", 707 wpa_supplicant_state_txt(wpa_s->wpa_state), 708 wpa_supplicant_state_txt(state)); 709 710 if (state == WPA_INTERFACE_DISABLED) { 711 /* Assure normal scan when interface is restored */ 712 wpa_s->normal_scans = 0; 713 } 714 715 if (state == WPA_COMPLETED) { 716 wpas_connect_work_done(wpa_s); 717 /* Reinitialize normal_scan counter */ 718 wpa_s->normal_scans = 0; 719 } 720 721 if (state != WPA_SCANNING) 722 wpa_supplicant_notify_scanning(wpa_s, 0); 723 724 if (state == WPA_COMPLETED && wpa_s->new_connection) { 725 struct wpa_ssid *ssid = wpa_s->current_ssid; 726#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 727 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to " 728 MACSTR " completed [id=%d id_str=%s]", 729 MAC2STR(wpa_s->bssid), 730 ssid ? ssid->id : -1, 731 ssid && ssid->id_str ? ssid->id_str : ""); 732#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 733 wpas_clear_temp_disabled(wpa_s, ssid, 1); 734 wpa_blacklist_clear(wpa_s); 735 wpa_s->extra_blacklist_count = 0; 736 wpa_s->new_connection = 0; 737 wpa_drv_set_operstate(wpa_s, 1); 738#ifndef IEEE8021X_EAPOL 739 wpa_drv_set_supp_port(wpa_s, 1); 740#endif /* IEEE8021X_EAPOL */ 741 wpa_s->after_wps = 0; 742 wpa_s->known_wps_freq = 0; 743 wpas_p2p_completed(wpa_s); 744 745 sme_sched_obss_scan(wpa_s, 1); 746 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING || 747 state == WPA_ASSOCIATED) { 748 wpa_s->new_connection = 1; 749 wpa_drv_set_operstate(wpa_s, 0); 750#ifndef IEEE8021X_EAPOL 751 wpa_drv_set_supp_port(wpa_s, 0); 752#endif /* IEEE8021X_EAPOL */ 753 sme_sched_obss_scan(wpa_s, 0); 754 } 755 wpa_s->wpa_state = state; 756 757#ifdef CONFIG_BGSCAN 758 if (state == WPA_COMPLETED) 759 wpa_supplicant_start_bgscan(wpa_s); 760 else if (state < WPA_ASSOCIATED) 761 wpa_supplicant_stop_bgscan(wpa_s); 762#endif /* CONFIG_BGSCAN */ 763 764 if (state == WPA_AUTHENTICATING) 765 wpa_supplicant_stop_autoscan(wpa_s); 766 767 if (state == WPA_DISCONNECTED || state == WPA_INACTIVE) 768 wpa_supplicant_start_autoscan(wpa_s); 769 770 if (old_state >= WPA_ASSOCIATED && wpa_s->wpa_state < WPA_ASSOCIATED) 771 wmm_ac_notify_disassoc(wpa_s); 772 773 if (wpa_s->wpa_state != old_state) { 774 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 775 776 /* 777 * Notify the P2P Device interface about a state change in one 778 * of the interfaces. 779 */ 780 wpas_p2p_indicate_state_change(wpa_s); 781 782 if (wpa_s->wpa_state == WPA_COMPLETED || 783 old_state == WPA_COMPLETED) 784 wpas_notify_auth_changed(wpa_s); 785 } 786} 787 788 789void wpa_supplicant_terminate_proc(struct wpa_global *global) 790{ 791 int pending = 0; 792#ifdef CONFIG_WPS 793 struct wpa_supplicant *wpa_s = global->ifaces; 794 while (wpa_s) { 795 struct wpa_supplicant *next = wpa_s->next; 796 if (wpas_wps_terminate_pending(wpa_s) == 1) 797 pending = 1; 798#ifdef CONFIG_P2P 799 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE || 800 (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)) 801 wpas_p2p_disconnect(wpa_s); 802#endif /* CONFIG_P2P */ 803 wpa_s = next; 804 } 805#endif /* CONFIG_WPS */ 806 if (pending) 807 return; 808 eloop_terminate(); 809} 810 811 812static void wpa_supplicant_terminate(int sig, void *signal_ctx) 813{ 814 struct wpa_global *global = signal_ctx; 815 wpa_supplicant_terminate_proc(global); 816} 817 818 819void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s) 820{ 821 enum wpa_states old_state = wpa_s->wpa_state; 822 823 wpa_s->pairwise_cipher = 0; 824 wpa_s->group_cipher = 0; 825 wpa_s->mgmt_group_cipher = 0; 826 wpa_s->key_mgmt = 0; 827 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED) 828 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 829 830 if (wpa_s->wpa_state != old_state) 831 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 832} 833 834 835/** 836 * wpa_supplicant_reload_configuration - Reload configuration data 837 * @wpa_s: Pointer to wpa_supplicant data 838 * Returns: 0 on success or -1 if configuration parsing failed 839 * 840 * This function can be used to request that the configuration data is reloaded 841 * (e.g., after configuration file change). This function is reloading 842 * configuration only for one interface, so this may need to be called multiple 843 * times if %wpa_supplicant is controlling multiple interfaces and all 844 * interfaces need reconfiguration. 845 */ 846int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s) 847{ 848 struct wpa_config *conf; 849 int reconf_ctrl; 850 int old_ap_scan; 851 852 if (wpa_s->confname == NULL) 853 return -1; 854 conf = wpa_config_read(wpa_s->confname, NULL); 855 if (conf == NULL) { 856 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration " 857 "file '%s' - exiting", wpa_s->confname); 858 return -1; 859 } 860 wpa_config_read(wpa_s->confanother, conf); 861 862 conf->changed_parameters = (unsigned int) -1; 863 864 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface 865 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface && 866 os_strcmp(conf->ctrl_interface, 867 wpa_s->conf->ctrl_interface) != 0); 868 869 if (reconf_ctrl && wpa_s->ctrl_iface) { 870 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 871 wpa_s->ctrl_iface = NULL; 872 } 873 874 eapol_sm_invalidate_cached_session(wpa_s->eapol); 875 if (wpa_s->current_ssid) { 876 wpa_s->own_disconnect_req = 1; 877 wpa_supplicant_deauthenticate(wpa_s, 878 WLAN_REASON_DEAUTH_LEAVING); 879 } 880 881 /* 882 * TODO: should notify EAPOL SM about changes in opensc_engine_path, 883 * pkcs11_engine_path, pkcs11_module_path, openssl_ciphers. 884 */ 885 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 886 /* 887 * Clear forced success to clear EAP state for next 888 * authentication. 889 */ 890 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 891 } 892 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 893 wpa_sm_set_config(wpa_s->wpa, NULL); 894 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL); 895 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 896 rsn_preauth_deinit(wpa_s->wpa); 897 898 old_ap_scan = wpa_s->conf->ap_scan; 899 wpa_config_free(wpa_s->conf); 900 wpa_s->conf = conf; 901 if (old_ap_scan != wpa_s->conf->ap_scan) 902 wpas_notify_ap_scan_changed(wpa_s); 903 904 if (reconf_ctrl) 905 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 906 907 wpa_supplicant_update_config(wpa_s); 908 909 wpa_supplicant_clear_status(wpa_s); 910 if (wpa_supplicant_enabled_networks(wpa_s)) { 911 wpa_s->reassociate = 1; 912 wpa_supplicant_req_scan(wpa_s, 0, 0); 913 } 914 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed"); 915 return 0; 916} 917 918 919static void wpa_supplicant_reconfig(int sig, void *signal_ctx) 920{ 921 struct wpa_global *global = signal_ctx; 922 struct wpa_supplicant *wpa_s; 923 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 924 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring", 925 sig); 926 if (wpa_supplicant_reload_configuration(wpa_s) < 0) { 927 wpa_supplicant_terminate_proc(global); 928 } 929 } 930} 931 932 933static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s, 934 struct wpa_ssid *ssid, 935 struct wpa_ie_data *ie) 936{ 937 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie); 938 if (ret) { 939 if (ret == -2) { 940 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE " 941 "from association info"); 942 } 943 return -1; 944 } 945 946 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set " 947 "cipher suites"); 948 if (!(ie->group_cipher & ssid->group_cipher)) { 949 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group " 950 "cipher 0x%x (mask 0x%x) - reject", 951 ie->group_cipher, ssid->group_cipher); 952 return -1; 953 } 954 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) { 955 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise " 956 "cipher 0x%x (mask 0x%x) - reject", 957 ie->pairwise_cipher, ssid->pairwise_cipher); 958 return -1; 959 } 960 if (!(ie->key_mgmt & ssid->key_mgmt)) { 961 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key " 962 "management 0x%x (mask 0x%x) - reject", 963 ie->key_mgmt, ssid->key_mgmt); 964 return -1; 965 } 966 967#ifdef CONFIG_IEEE80211W 968 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) && 969 wpas_get_ssid_pmf(wpa_s, ssid) == MGMT_FRAME_PROTECTION_REQUIRED) { 970 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP " 971 "that does not support management frame protection - " 972 "reject"); 973 return -1; 974 } 975#endif /* CONFIG_IEEE80211W */ 976 977 return 0; 978} 979 980 981/** 982 * wpa_supplicant_set_suites - Set authentication and encryption parameters 983 * @wpa_s: Pointer to wpa_supplicant data 984 * @bss: Scan results for the selected BSS, or %NULL if not available 985 * @ssid: Configuration data for the selected network 986 * @wpa_ie: Buffer for the WPA/RSN IE 987 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the 988 * used buffer length in case the functions returns success. 989 * Returns: 0 on success or -1 on failure 990 * 991 * This function is used to configure authentication and encryption parameters 992 * based on the network configuration and scan result for the selected BSS (if 993 * available). 994 */ 995int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s, 996 struct wpa_bss *bss, struct wpa_ssid *ssid, 997 u8 *wpa_ie, size_t *wpa_ie_len) 998{ 999 struct wpa_ie_data ie; 1000 int sel, proto; 1001 const u8 *bss_wpa, *bss_rsn, *bss_osen; 1002 1003 if (bss) { 1004 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 1005 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1006 bss_osen = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE); 1007 } else 1008 bss_wpa = bss_rsn = bss_osen = NULL; 1009 1010 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) && 1011 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 && 1012 (ie.group_cipher & ssid->group_cipher) && 1013 (ie.pairwise_cipher & ssid->pairwise_cipher) && 1014 (ie.key_mgmt & ssid->key_mgmt)) { 1015 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0"); 1016 proto = WPA_PROTO_RSN; 1017 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) && 1018 wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie) == 0 && 1019 (ie.group_cipher & ssid->group_cipher) && 1020 (ie.pairwise_cipher & ssid->pairwise_cipher) && 1021 (ie.key_mgmt & ssid->key_mgmt)) { 1022 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0"); 1023 proto = WPA_PROTO_WPA; 1024#ifdef CONFIG_HS20 1025 } else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) { 1026 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN"); 1027 /* TODO: parse OSEN element */ 1028 os_memset(&ie, 0, sizeof(ie)); 1029 ie.group_cipher = WPA_CIPHER_CCMP; 1030 ie.pairwise_cipher = WPA_CIPHER_CCMP; 1031 ie.key_mgmt = WPA_KEY_MGMT_OSEN; 1032 proto = WPA_PROTO_OSEN; 1033#endif /* CONFIG_HS20 */ 1034 } else if (bss) { 1035 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN"); 1036 wpa_dbg(wpa_s, MSG_DEBUG, 1037 "WPA: ssid proto=0x%x pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1038 ssid->proto, ssid->pairwise_cipher, ssid->group_cipher, 1039 ssid->key_mgmt); 1040 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: BSS " MACSTR " ssid='%s'%s%s%s", 1041 MAC2STR(bss->bssid), 1042 wpa_ssid_txt(bss->ssid, bss->ssid_len), 1043 bss_wpa ? " WPA" : "", 1044 bss_rsn ? " RSN" : "", 1045 bss_osen ? " OSEN" : ""); 1046 if (bss_rsn) { 1047 wpa_hexdump(MSG_DEBUG, "RSN", bss_rsn, 2 + bss_rsn[1]); 1048 if (wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie)) { 1049 wpa_dbg(wpa_s, MSG_DEBUG, 1050 "Could not parse RSN element"); 1051 } else { 1052 wpa_dbg(wpa_s, MSG_DEBUG, 1053 "RSN: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1054 ie.pairwise_cipher, ie.group_cipher, 1055 ie.key_mgmt); 1056 } 1057 } 1058 if (bss_wpa) { 1059 wpa_hexdump(MSG_DEBUG, "WPA", bss_wpa, 2 + bss_wpa[1]); 1060 if (wpa_parse_wpa_ie(bss_wpa, 2 + bss_wpa[1], &ie)) { 1061 wpa_dbg(wpa_s, MSG_DEBUG, 1062 "Could not parse WPA element"); 1063 } else { 1064 wpa_dbg(wpa_s, MSG_DEBUG, 1065 "WPA: pairwise_cipher=0x%x group_cipher=0x%x key_mgmt=0x%x", 1066 ie.pairwise_cipher, ie.group_cipher, 1067 ie.key_mgmt); 1068 } 1069 } 1070 return -1; 1071 } else { 1072 if (ssid->proto & WPA_PROTO_OSEN) 1073 proto = WPA_PROTO_OSEN; 1074 else if (ssid->proto & WPA_PROTO_RSN) 1075 proto = WPA_PROTO_RSN; 1076 else 1077 proto = WPA_PROTO_WPA; 1078 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) { 1079 os_memset(&ie, 0, sizeof(ie)); 1080 ie.group_cipher = ssid->group_cipher; 1081 ie.pairwise_cipher = ssid->pairwise_cipher; 1082 ie.key_mgmt = ssid->key_mgmt; 1083#ifdef CONFIG_IEEE80211W 1084 ie.mgmt_group_cipher = 1085 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ? 1086 WPA_CIPHER_AES_128_CMAC : 0; 1087#endif /* CONFIG_IEEE80211W */ 1088 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites " 1089 "based on configuration"); 1090 } else 1091 proto = ie.proto; 1092 } 1093 1094 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d " 1095 "pairwise %d key_mgmt %d proto %d", 1096 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto); 1097#ifdef CONFIG_IEEE80211W 1098 if (ssid->ieee80211w) { 1099 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d", 1100 ie.mgmt_group_cipher); 1101 } 1102#endif /* CONFIG_IEEE80211W */ 1103 1104 wpa_s->wpa_proto = proto; 1105 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto); 1106 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 1107 !!(ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN))); 1108 1109 if (bss || !wpa_s->ap_ies_from_associnfo) { 1110 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 1111 bss_wpa ? 2 + bss_wpa[1] : 0) || 1112 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 1113 bss_rsn ? 2 + bss_rsn[1] : 0)) 1114 return -1; 1115 } 1116 1117 sel = ie.group_cipher & ssid->group_cipher; 1118 wpa_s->group_cipher = wpa_pick_group_cipher(sel); 1119 if (wpa_s->group_cipher < 0) { 1120 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group " 1121 "cipher"); 1122 return -1; 1123 } 1124 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK %s", 1125 wpa_cipher_txt(wpa_s->group_cipher)); 1126 1127 sel = ie.pairwise_cipher & ssid->pairwise_cipher; 1128 wpa_s->pairwise_cipher = wpa_pick_pairwise_cipher(sel, 1); 1129 if (wpa_s->pairwise_cipher < 0) { 1130 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise " 1131 "cipher"); 1132 return -1; 1133 } 1134 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK %s", 1135 wpa_cipher_txt(wpa_s->pairwise_cipher)); 1136 1137 sel = ie.key_mgmt & ssid->key_mgmt; 1138#ifdef CONFIG_SAE 1139 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE)) 1140 sel &= ~(WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE); 1141#endif /* CONFIG_SAE */ 1142 if (0) { 1143#ifdef CONFIG_SUITEB192 1144 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { 1145 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B_192; 1146 wpa_dbg(wpa_s, MSG_DEBUG, 1147 "WPA: using KEY_MGMT 802.1X with Suite B (192-bit)"); 1148#endif /* CONFIG_SUITEB192 */ 1149#ifdef CONFIG_SUITEB 1150 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SUITE_B) { 1151 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B; 1152 wpa_dbg(wpa_s, MSG_DEBUG, 1153 "WPA: using KEY_MGMT 802.1X with Suite B"); 1154#endif /* CONFIG_SUITEB */ 1155#ifdef CONFIG_IEEE80211R 1156 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) { 1157 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; 1158 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X"); 1159 } else if (sel & WPA_KEY_MGMT_FT_PSK) { 1160 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK; 1161 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK"); 1162#endif /* CONFIG_IEEE80211R */ 1163#ifdef CONFIG_SAE 1164 } else if (sel & WPA_KEY_MGMT_SAE) { 1165 wpa_s->key_mgmt = WPA_KEY_MGMT_SAE; 1166 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT SAE"); 1167 } else if (sel & WPA_KEY_MGMT_FT_SAE) { 1168 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_SAE; 1169 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using KEY_MGMT FT/SAE"); 1170#endif /* CONFIG_SAE */ 1171#ifdef CONFIG_IEEE80211W 1172 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) { 1173 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; 1174 wpa_dbg(wpa_s, MSG_DEBUG, 1175 "WPA: using KEY_MGMT 802.1X with SHA256"); 1176 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) { 1177 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256; 1178 wpa_dbg(wpa_s, MSG_DEBUG, 1179 "WPA: using KEY_MGMT PSK with SHA256"); 1180#endif /* CONFIG_IEEE80211W */ 1181 } else if (sel & WPA_KEY_MGMT_IEEE8021X) { 1182 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 1183 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X"); 1184 } else if (sel & WPA_KEY_MGMT_PSK) { 1185 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK; 1186 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK"); 1187 } else if (sel & WPA_KEY_MGMT_WPA_NONE) { 1188 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE; 1189 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE"); 1190#ifdef CONFIG_HS20 1191 } else if (sel & WPA_KEY_MGMT_OSEN) { 1192 wpa_s->key_mgmt = WPA_KEY_MGMT_OSEN; 1193 wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using KEY_MGMT OSEN"); 1194#endif /* CONFIG_HS20 */ 1195 } else { 1196 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select " 1197 "authenticated key management type"); 1198 return -1; 1199 } 1200 1201 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 1202 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 1203 wpa_s->pairwise_cipher); 1204 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 1205 1206#ifdef CONFIG_IEEE80211W 1207 sel = ie.mgmt_group_cipher; 1208 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION || 1209 !(ie.capabilities & WPA_CAPABILITY_MFPC)) 1210 sel = 0; 1211 if (sel & WPA_CIPHER_AES_128_CMAC) { 1212 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 1213 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1214 "AES-128-CMAC"); 1215 } else if (sel & WPA_CIPHER_BIP_GMAC_128) { 1216 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_128; 1217 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1218 "BIP-GMAC-128"); 1219 } else if (sel & WPA_CIPHER_BIP_GMAC_256) { 1220 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_GMAC_256; 1221 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1222 "BIP-GMAC-256"); 1223 } else if (sel & WPA_CIPHER_BIP_CMAC_256) { 1224 wpa_s->mgmt_group_cipher = WPA_CIPHER_BIP_CMAC_256; 1225 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 1226 "BIP-CMAC-256"); 1227 } else { 1228 wpa_s->mgmt_group_cipher = 0; 1229 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher"); 1230 } 1231 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 1232 wpa_s->mgmt_group_cipher); 1233 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, 1234 wpas_get_ssid_pmf(wpa_s, ssid)); 1235#endif /* CONFIG_IEEE80211W */ 1236 1237 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) { 1238 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE"); 1239 return -1; 1240 } 1241 1242 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) { 1243 int psk_set = 0; 1244 1245 if (ssid->psk_set) { 1246 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN, NULL); 1247 psk_set = 1; 1248 } 1249#ifndef CONFIG_NO_PBKDF2 1250 if (bss && ssid->bssid_set && ssid->ssid_len == 0 && 1251 ssid->passphrase) { 1252 u8 psk[PMK_LEN]; 1253 pbkdf2_sha1(ssid->passphrase, bss->ssid, bss->ssid_len, 1254 4096, psk, PMK_LEN); 1255 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)", 1256 psk, PMK_LEN); 1257 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1258 psk_set = 1; 1259 os_memset(psk, 0, sizeof(psk)); 1260 } 1261#endif /* CONFIG_NO_PBKDF2 */ 1262#ifdef CONFIG_EXT_PASSWORD 1263 if (ssid->ext_psk) { 1264 struct wpabuf *pw = ext_password_get(wpa_s->ext_pw, 1265 ssid->ext_psk); 1266 char pw_str[64 + 1]; 1267 u8 psk[PMK_LEN]; 1268 1269 if (pw == NULL) { 1270 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No PSK " 1271 "found from external storage"); 1272 return -1; 1273 } 1274 1275 if (wpabuf_len(pw) < 8 || wpabuf_len(pw) > 64) { 1276 wpa_msg(wpa_s, MSG_INFO, "EXT PW: Unexpected " 1277 "PSK length %d in external storage", 1278 (int) wpabuf_len(pw)); 1279 ext_password_free(pw); 1280 return -1; 1281 } 1282 1283 os_memcpy(pw_str, wpabuf_head(pw), wpabuf_len(pw)); 1284 pw_str[wpabuf_len(pw)] = '\0'; 1285 1286#ifndef CONFIG_NO_PBKDF2 1287 if (wpabuf_len(pw) >= 8 && wpabuf_len(pw) < 64 && bss) 1288 { 1289 pbkdf2_sha1(pw_str, bss->ssid, bss->ssid_len, 1290 4096, psk, PMK_LEN); 1291 os_memset(pw_str, 0, sizeof(pw_str)); 1292 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from " 1293 "external passphrase)", 1294 psk, PMK_LEN); 1295 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1296 psk_set = 1; 1297 os_memset(psk, 0, sizeof(psk)); 1298 } else 1299#endif /* CONFIG_NO_PBKDF2 */ 1300 if (wpabuf_len(pw) == 2 * PMK_LEN) { 1301 if (hexstr2bin(pw_str, psk, PMK_LEN) < 0) { 1302 wpa_msg(wpa_s, MSG_INFO, "EXT PW: " 1303 "Invalid PSK hex string"); 1304 os_memset(pw_str, 0, sizeof(pw_str)); 1305 ext_password_free(pw); 1306 return -1; 1307 } 1308 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN, NULL); 1309 psk_set = 1; 1310 os_memset(psk, 0, sizeof(psk)); 1311 } else { 1312 wpa_msg(wpa_s, MSG_INFO, "EXT PW: No suitable " 1313 "PSK available"); 1314 os_memset(pw_str, 0, sizeof(pw_str)); 1315 ext_password_free(pw); 1316 return -1; 1317 } 1318 1319 os_memset(pw_str, 0, sizeof(pw_str)); 1320 ext_password_free(pw); 1321 } 1322#endif /* CONFIG_EXT_PASSWORD */ 1323 1324 if (!psk_set) { 1325 wpa_msg(wpa_s, MSG_INFO, 1326 "No PSK available for association"); 1327 return -1; 1328 } 1329 } else 1330 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 1331 1332 return 0; 1333} 1334 1335 1336static void wpas_ext_capab_byte(struct wpa_supplicant *wpa_s, u8 *pos, int idx) 1337{ 1338 *pos = 0x00; 1339 1340 switch (idx) { 1341 case 0: /* Bits 0-7 */ 1342 break; 1343 case 1: /* Bits 8-15 */ 1344 break; 1345 case 2: /* Bits 16-23 */ 1346#ifdef CONFIG_WNM 1347 *pos |= 0x02; /* Bit 17 - WNM-Sleep Mode */ 1348 *pos |= 0x08; /* Bit 19 - BSS Transition */ 1349#endif /* CONFIG_WNM */ 1350 break; 1351 case 3: /* Bits 24-31 */ 1352#ifdef CONFIG_WNM 1353 *pos |= 0x02; /* Bit 25 - SSID List */ 1354#endif /* CONFIG_WNM */ 1355#ifdef CONFIG_INTERWORKING 1356 if (wpa_s->conf->interworking) 1357 *pos |= 0x80; /* Bit 31 - Interworking */ 1358#endif /* CONFIG_INTERWORKING */ 1359 break; 1360 case 4: /* Bits 32-39 */ 1361#ifdef CONFIG_INTERWORKING 1362 if (wpa_s->drv_flags / WPA_DRIVER_FLAGS_QOS_MAPPING) 1363 *pos |= 0x01; /* Bit 32 - QoS Map */ 1364#endif /* CONFIG_INTERWORKING */ 1365 break; 1366 case 5: /* Bits 40-47 */ 1367#ifdef CONFIG_HS20 1368 if (wpa_s->conf->hs20) 1369 *pos |= 0x40; /* Bit 46 - WNM-Notification */ 1370#endif /* CONFIG_HS20 */ 1371 break; 1372 case 6: /* Bits 48-55 */ 1373 break; 1374 } 1375} 1376 1377 1378int wpas_build_ext_capab(struct wpa_supplicant *wpa_s, u8 *buf, size_t buflen) 1379{ 1380 u8 *pos = buf; 1381 u8 len = 6, i; 1382 1383 if (len < wpa_s->extended_capa_len) 1384 len = wpa_s->extended_capa_len; 1385 if (buflen < (size_t) len + 2) { 1386 wpa_printf(MSG_INFO, 1387 "Not enough room for building extended capabilities element"); 1388 return -1; 1389 } 1390 1391 *pos++ = WLAN_EID_EXT_CAPAB; 1392 *pos++ = len; 1393 for (i = 0; i < len; i++, pos++) { 1394 wpas_ext_capab_byte(wpa_s, pos, i); 1395 1396 if (i < wpa_s->extended_capa_len) { 1397 *pos &= ~wpa_s->extended_capa_mask[i]; 1398 *pos |= wpa_s->extended_capa[i]; 1399 } 1400 } 1401 1402 while (len > 0 && buf[1 + len] == 0) { 1403 len--; 1404 buf[1] = len; 1405 } 1406 if (len == 0) 1407 return 0; 1408 1409 return 2 + len; 1410} 1411 1412 1413static int wpas_valid_bss(struct wpa_supplicant *wpa_s, 1414 struct wpa_bss *test_bss) 1415{ 1416 struct wpa_bss *bss; 1417 1418 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1419 if (bss == test_bss) 1420 return 1; 1421 } 1422 1423 return 0; 1424} 1425 1426 1427static int wpas_valid_ssid(struct wpa_supplicant *wpa_s, 1428 struct wpa_ssid *test_ssid) 1429{ 1430 struct wpa_ssid *ssid; 1431 1432 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { 1433 if (ssid == test_ssid) 1434 return 1; 1435 } 1436 1437 return 0; 1438} 1439 1440 1441int wpas_valid_bss_ssid(struct wpa_supplicant *wpa_s, struct wpa_bss *test_bss, 1442 struct wpa_ssid *test_ssid) 1443{ 1444 if (test_bss && !wpas_valid_bss(wpa_s, test_bss)) 1445 return 0; 1446 1447 return test_ssid == NULL || wpas_valid_ssid(wpa_s, test_ssid); 1448} 1449 1450 1451void wpas_connect_work_free(struct wpa_connect_work *cwork) 1452{ 1453 if (cwork == NULL) 1454 return; 1455 os_free(cwork); 1456} 1457 1458 1459void wpas_connect_work_done(struct wpa_supplicant *wpa_s) 1460{ 1461 struct wpa_connect_work *cwork; 1462 struct wpa_radio_work *work = wpa_s->connect_work; 1463 1464 if (!work) 1465 return; 1466 1467 wpa_s->connect_work = NULL; 1468 cwork = work->ctx; 1469 work->ctx = NULL; 1470 wpas_connect_work_free(cwork); 1471 radio_work_done(work); 1472} 1473 1474 1475int wpas_update_random_addr(struct wpa_supplicant *wpa_s, int style) 1476{ 1477 struct os_reltime now; 1478 u8 addr[ETH_ALEN]; 1479 1480 os_get_reltime(&now); 1481 if (wpa_s->last_mac_addr_style == style && 1482 wpa_s->last_mac_addr_change.sec != 0 && 1483 !os_reltime_expired(&now, &wpa_s->last_mac_addr_change, 1484 wpa_s->conf->rand_addr_lifetime)) { 1485 wpa_msg(wpa_s, MSG_DEBUG, 1486 "Previously selected random MAC address has not yet expired"); 1487 return 0; 1488 } 1489 1490 switch (style) { 1491 case 1: 1492 if (random_mac_addr(addr) < 0) 1493 return -1; 1494 break; 1495 case 2: 1496 os_memcpy(addr, wpa_s->perm_addr, ETH_ALEN); 1497 if (random_mac_addr_keep_oui(addr) < 0) 1498 return -1; 1499 break; 1500 default: 1501 return -1; 1502 } 1503 1504 if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) { 1505 wpa_msg(wpa_s, MSG_INFO, 1506 "Failed to set random MAC address"); 1507 return -1; 1508 } 1509 1510 os_get_reltime(&wpa_s->last_mac_addr_change); 1511 wpa_s->mac_addr_changed = 1; 1512 wpa_s->last_mac_addr_style = style; 1513 1514 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 1515 wpa_msg(wpa_s, MSG_INFO, 1516 "Could not update MAC address information"); 1517 return -1; 1518 } 1519 1520 wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR, 1521 MAC2STR(addr)); 1522 1523 return 0; 1524} 1525 1526 1527int wpas_update_random_addr_disassoc(struct wpa_supplicant *wpa_s) 1528{ 1529 if (wpa_s->wpa_state >= WPA_AUTHENTICATING || 1530 !wpa_s->conf->preassoc_mac_addr) 1531 return 0; 1532 1533 return wpas_update_random_addr(wpa_s, wpa_s->conf->preassoc_mac_addr); 1534} 1535 1536 1537static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit); 1538 1539/** 1540 * wpa_supplicant_associate - Request association 1541 * @wpa_s: Pointer to wpa_supplicant data 1542 * @bss: Scan results for the selected BSS, or %NULL if not available 1543 * @ssid: Configuration data for the selected network 1544 * 1545 * This function is used to request %wpa_supplicant to associate with a BSS. 1546 */ 1547void wpa_supplicant_associate(struct wpa_supplicant *wpa_s, 1548 struct wpa_bss *bss, struct wpa_ssid *ssid) 1549{ 1550 struct wpa_connect_work *cwork; 1551 int rand_style; 1552 1553 if (ssid->mac_addr == -1) 1554 rand_style = wpa_s->conf->mac_addr; 1555 else 1556 rand_style = ssid->mac_addr; 1557 1558 wmm_ac_clear_saved_tspecs(wpa_s); 1559 wpa_s->reassoc_same_bss = 0; 1560 1561 if (wpa_s->last_ssid == ssid) { 1562 wpa_dbg(wpa_s, MSG_DEBUG, "Re-association to the same ESS"); 1563 if (wpa_s->current_bss && wpa_s->current_bss == bss) { 1564 wmm_ac_save_tspecs(wpa_s); 1565 wpa_s->reassoc_same_bss = 1; 1566 } 1567 } else if (rand_style > 0) { 1568 if (wpas_update_random_addr(wpa_s, rand_style) < 0) 1569 return; 1570 wpa_sm_pmksa_cache_flush(wpa_s->wpa, ssid); 1571 } else if (wpa_s->mac_addr_changed) { 1572 if (wpa_drv_set_mac_addr(wpa_s, NULL) < 0) { 1573 wpa_msg(wpa_s, MSG_INFO, 1574 "Could not restore permanent MAC address"); 1575 return; 1576 } 1577 wpa_s->mac_addr_changed = 0; 1578 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) { 1579 wpa_msg(wpa_s, MSG_INFO, 1580 "Could not update MAC address information"); 1581 return; 1582 } 1583 wpa_msg(wpa_s, MSG_DEBUG, "Using permanent MAC address"); 1584 } 1585 wpa_s->last_ssid = ssid; 1586 1587#ifdef CONFIG_IBSS_RSN 1588 ibss_rsn_deinit(wpa_s->ibss_rsn); 1589 wpa_s->ibss_rsn = NULL; 1590#endif /* CONFIG_IBSS_RSN */ 1591 1592 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO || 1593 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 1594#ifdef CONFIG_AP 1595 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) { 1596 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP " 1597 "mode"); 1598 return; 1599 } 1600 if (wpa_supplicant_create_ap(wpa_s, ssid) < 0) { 1601 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1602 if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) 1603 wpas_p2p_ap_setup_failed(wpa_s); 1604 return; 1605 } 1606 wpa_s->current_bss = bss; 1607#else /* CONFIG_AP */ 1608 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in " 1609 "the build"); 1610#endif /* CONFIG_AP */ 1611 return; 1612 } 1613 1614 if (ssid->mode == WPAS_MODE_MESH) { 1615#ifdef CONFIG_MESH 1616 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MESH)) { 1617 wpa_msg(wpa_s, MSG_INFO, 1618 "Driver does not support mesh mode"); 1619 return; 1620 } 1621 if (bss) 1622 ssid->frequency = bss->freq; 1623 if (wpa_supplicant_join_mesh(wpa_s, ssid) < 0) { 1624 wpa_msg(wpa_s, MSG_ERROR, "Could not join mesh"); 1625 return; 1626 } 1627 wpa_s->current_bss = bss; 1628 wpa_msg_ctrl(wpa_s, MSG_INFO, MESH_GROUP_STARTED 1629 "ssid=\"%s\" id=%d", 1630 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 1631 ssid->id); 1632#else /* CONFIG_MESH */ 1633 wpa_msg(wpa_s, MSG_ERROR, 1634 "mesh mode support not included in the build"); 1635#endif /* CONFIG_MESH */ 1636 return; 1637 } 1638 1639#ifdef CONFIG_TDLS 1640 if (bss) 1641 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1), 1642 bss->ie_len); 1643#endif /* CONFIG_TDLS */ 1644 1645 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1646 ssid->mode == IEEE80211_MODE_INFRA) { 1647 sme_authenticate(wpa_s, bss, ssid); 1648 return; 1649 } 1650 1651 if (wpa_s->connect_work) { 1652 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since connect_work exist"); 1653 return; 1654 } 1655 1656 if (radio_work_pending(wpa_s, "connect")) { 1657 wpa_dbg(wpa_s, MSG_DEBUG, "Reject wpa_supplicant_associate() call since pending work exist"); 1658 return; 1659 } 1660 1661 cwork = os_zalloc(sizeof(*cwork)); 1662 if (cwork == NULL) 1663 return; 1664 1665 cwork->bss = bss; 1666 cwork->ssid = ssid; 1667 1668 if (radio_add_work(wpa_s, bss ? bss->freq : 0, "connect", 1, 1669 wpas_start_assoc_cb, cwork) < 0) { 1670 os_free(cwork); 1671 } 1672} 1673 1674 1675static int bss_is_ibss(struct wpa_bss *bss) 1676{ 1677 return (bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) == 1678 IEEE80211_CAP_IBSS; 1679} 1680 1681 1682void ibss_mesh_setup_freq(struct wpa_supplicant *wpa_s, 1683 const struct wpa_ssid *ssid, 1684 struct hostapd_freq_params *freq) 1685{ 1686 enum hostapd_hw_mode hw_mode; 1687 struct hostapd_hw_modes *mode = NULL; 1688 int ht40plus[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157, 1689 184, 192 }; 1690 int vht80[] = { 36, 52, 100, 116, 132, 149 }; 1691 struct hostapd_channel_data *pri_chan = NULL, *sec_chan = NULL; 1692 u8 channel; 1693 int i, chan_idx, ht40 = -1, res, obss_scan = 1; 1694 unsigned int j; 1695 struct hostapd_freq_params vht_freq; 1696 1697 freq->freq = ssid->frequency; 1698 1699 for (j = 0; j < wpa_s->last_scan_res_used; j++) { 1700 struct wpa_bss *bss = wpa_s->last_scan_res[j]; 1701 1702 if (ssid->mode != WPAS_MODE_IBSS) 1703 break; 1704 1705 /* Don't adjust control freq in case of fixed_freq */ 1706 if (ssid->fixed_freq) 1707 break; 1708 1709 if (!bss_is_ibss(bss)) 1710 continue; 1711 1712 if (ssid->ssid_len == bss->ssid_len && 1713 os_memcmp(ssid->ssid, bss->ssid, bss->ssid_len) == 0) { 1714 wpa_printf(MSG_DEBUG, 1715 "IBSS already found in scan results, adjust control freq: %d", 1716 bss->freq); 1717 freq->freq = bss->freq; 1718 obss_scan = 0; 1719 break; 1720 } 1721 } 1722 1723 /* For IBSS check HT_IBSS flag */ 1724 if (ssid->mode == WPAS_MODE_IBSS && 1725 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_HT_IBSS)) 1726 return; 1727 1728 if (wpa_s->group_cipher == WPA_CIPHER_WEP40 || 1729 wpa_s->group_cipher == WPA_CIPHER_WEP104 || 1730 wpa_s->pairwise_cipher == WPA_CIPHER_TKIP) { 1731 wpa_printf(MSG_DEBUG, 1732 "IBSS: WEP/TKIP detected, do not try to enable HT"); 1733 return; 1734 } 1735 1736 hw_mode = ieee80211_freq_to_chan(freq->freq, &channel); 1737 for (i = 0; wpa_s->hw.modes && i < wpa_s->hw.num_modes; i++) { 1738 if (wpa_s->hw.modes[i].mode == hw_mode) { 1739 mode = &wpa_s->hw.modes[i]; 1740 break; 1741 } 1742 } 1743 1744 if (!mode) 1745 return; 1746 1747 freq->ht_enabled = ht_supported(mode); 1748 if (!freq->ht_enabled) 1749 return; 1750 1751 /* Setup higher BW only for 5 GHz */ 1752 if (mode->mode != HOSTAPD_MODE_IEEE80211A) 1753 return; 1754 1755 for (chan_idx = 0; chan_idx < mode->num_channels; chan_idx++) { 1756 pri_chan = &mode->channels[chan_idx]; 1757 if (pri_chan->chan == channel) 1758 break; 1759 pri_chan = NULL; 1760 } 1761 if (!pri_chan) 1762 return; 1763 1764 /* Check primary channel flags */ 1765 if (pri_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1766 return; 1767 1768 /* Check/setup HT40+/HT40- */ 1769 for (j = 0; j < ARRAY_SIZE(ht40plus); j++) { 1770 if (ht40plus[j] == channel) { 1771 ht40 = 1; 1772 break; 1773 } 1774 } 1775 1776 /* Find secondary channel */ 1777 for (i = 0; i < mode->num_channels; i++) { 1778 sec_chan = &mode->channels[i]; 1779 if (sec_chan->chan == channel + ht40 * 4) 1780 break; 1781 sec_chan = NULL; 1782 } 1783 if (!sec_chan) 1784 return; 1785 1786 /* Check secondary channel flags */ 1787 if (sec_chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1788 return; 1789 1790 freq->channel = pri_chan->chan; 1791 1792 switch (ht40) { 1793 case -1: 1794 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS)) 1795 return; 1796 freq->sec_channel_offset = -1; 1797 break; 1798 case 1: 1799 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40PLUS)) 1800 return; 1801 freq->sec_channel_offset = 1; 1802 break; 1803 default: 1804 break; 1805 } 1806 1807 if (freq->sec_channel_offset && obss_scan) { 1808 struct wpa_scan_results *scan_res; 1809 1810 scan_res = wpa_supplicant_get_scan_results(wpa_s, NULL, 0); 1811 if (scan_res == NULL) { 1812 /* Back to HT20 */ 1813 freq->sec_channel_offset = 0; 1814 return; 1815 } 1816 1817 res = check_40mhz_5g(mode, scan_res, pri_chan->chan, 1818 sec_chan->chan); 1819 switch (res) { 1820 case 0: 1821 /* Back to HT20 */ 1822 freq->sec_channel_offset = 0; 1823 break; 1824 case 1: 1825 /* Configuration allowed */ 1826 break; 1827 case 2: 1828 /* Switch pri/sec channels */ 1829 freq->freq = hw_get_freq(mode, sec_chan->chan); 1830 freq->sec_channel_offset = -freq->sec_channel_offset; 1831 freq->channel = sec_chan->chan; 1832 break; 1833 default: 1834 freq->sec_channel_offset = 0; 1835 break; 1836 } 1837 1838 wpa_scan_results_free(scan_res); 1839 } 1840 1841 wpa_printf(MSG_DEBUG, 1842 "IBSS/mesh: setup freq channel %d, sec_channel_offset %d", 1843 freq->channel, freq->sec_channel_offset); 1844 1845 /* Not sure if mesh is ready for VHT */ 1846 if (ssid->mode != WPAS_MODE_IBSS) 1847 return; 1848 1849 /* For IBSS check VHT_IBSS flag */ 1850 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_VHT_IBSS)) 1851 return; 1852 1853 vht_freq = *freq; 1854 1855 vht_freq.vht_enabled = vht_supported(mode); 1856 if (!vht_freq.vht_enabled) 1857 return; 1858 1859 /* setup center_freq1, bandwidth */ 1860 for (j = 0; j < ARRAY_SIZE(vht80); j++) { 1861 if (freq->channel >= vht80[j] && 1862 freq->channel < vht80[j] + 16) 1863 break; 1864 } 1865 1866 if (j == ARRAY_SIZE(vht80)) 1867 return; 1868 1869 for (i = vht80[j]; i < vht80[j] + 16; i += 4) { 1870 struct hostapd_channel_data *chan; 1871 1872 chan = hw_get_channel_chan(mode, i, NULL); 1873 if (!chan) 1874 return; 1875 1876 /* Back to HT configuration if channel not usable */ 1877 if (chan->flag & (HOSTAPD_CHAN_DISABLED | HOSTAPD_CHAN_NO_IR)) 1878 return; 1879 } 1880 1881 if (hostapd_set_freq_params(&vht_freq, mode->mode, freq->freq, 1882 freq->channel, freq->ht_enabled, 1883 vht_freq.vht_enabled, 1884 freq->sec_channel_offset, 1885 VHT_CHANWIDTH_80MHZ, 1886 vht80[j] + 6, 0, 0) != 0) 1887 return; 1888 1889 *freq = vht_freq; 1890 1891 wpa_printf(MSG_DEBUG, "IBSS: VHT setup freq cf1 %d, cf2 %d, bw %d", 1892 freq->center_freq1, freq->center_freq2, freq->bandwidth); 1893} 1894 1895 1896static void wpas_start_assoc_cb(struct wpa_radio_work *work, int deinit) 1897{ 1898 struct wpa_connect_work *cwork = work->ctx; 1899 struct wpa_bss *bss = cwork->bss; 1900 struct wpa_ssid *ssid = cwork->ssid; 1901 struct wpa_supplicant *wpa_s = work->wpa_s; 1902 u8 wpa_ie[200]; 1903 size_t wpa_ie_len; 1904 int use_crypt, ret, i, bssid_changed; 1905 int algs = WPA_AUTH_ALG_OPEN; 1906 unsigned int cipher_pairwise, cipher_group; 1907 struct wpa_driver_associate_params params; 1908 int wep_keys_set = 0; 1909 int assoc_failed = 0; 1910 struct wpa_ssid *old_ssid; 1911#ifdef CONFIG_HT_OVERRIDES 1912 struct ieee80211_ht_capabilities htcaps; 1913 struct ieee80211_ht_capabilities htcaps_mask; 1914#endif /* CONFIG_HT_OVERRIDES */ 1915#ifdef CONFIG_VHT_OVERRIDES 1916 struct ieee80211_vht_capabilities vhtcaps; 1917 struct ieee80211_vht_capabilities vhtcaps_mask; 1918#endif /* CONFIG_VHT_OVERRIDES */ 1919 1920 if (deinit) { 1921 if (work->started) { 1922 wpa_s->connect_work = NULL; 1923 1924 /* cancel possible auth. timeout */ 1925 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, 1926 NULL); 1927 } 1928 wpas_connect_work_free(cwork); 1929 return; 1930 } 1931 1932 wpa_s->connect_work = work; 1933 1934 if (cwork->bss_removed || !wpas_valid_bss_ssid(wpa_s, bss, ssid)) { 1935 wpa_dbg(wpa_s, MSG_DEBUG, "BSS/SSID entry for association not valid anymore - drop connection attempt"); 1936 wpas_connect_work_done(wpa_s); 1937 return; 1938 } 1939 1940 os_memset(¶ms, 0, sizeof(params)); 1941 wpa_s->reassociate = 0; 1942 wpa_s->eap_expected_failure = 0; 1943 if (bss && 1944 (!wpas_driver_bss_selection(wpa_s) || wpas_wps_searching(wpa_s))) { 1945#ifdef CONFIG_IEEE80211R 1946 const u8 *ie, *md = NULL; 1947#endif /* CONFIG_IEEE80211R */ 1948 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 1949 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid), 1950 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq); 1951 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1952 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1953 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 1954 if (bssid_changed) 1955 wpas_notify_bssid_changed(wpa_s); 1956#ifdef CONFIG_IEEE80211R 1957 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 1958 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 1959 md = ie + 2; 1960 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 1961 if (md) { 1962 /* Prepare for the next transition */ 1963 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 1964 } 1965#endif /* CONFIG_IEEE80211R */ 1966#ifdef CONFIG_WPS 1967 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) && 1968 wpa_s->conf->ap_scan == 2 && 1969 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 1970 /* Use ap_scan==1 style network selection to find the network 1971 */ 1972 wpas_connect_work_done(wpa_s); 1973 wpa_s->scan_req = MANUAL_SCAN_REQ; 1974 wpa_s->reassociate = 1; 1975 wpa_supplicant_req_scan(wpa_s, 0, 0); 1976 return; 1977#endif /* CONFIG_WPS */ 1978 } else { 1979 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'", 1980 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 1981 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1982 } 1983 wpa_supplicant_cancel_sched_scan(wpa_s); 1984 wpa_supplicant_cancel_scan(wpa_s); 1985 1986 /* Starting new association, so clear the possibly used WPA IE from the 1987 * previous association. */ 1988 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1989 1990#ifdef IEEE8021X_EAPOL 1991 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1992 if (ssid->leap) { 1993 if (ssid->non_leap == 0) 1994 algs = WPA_AUTH_ALG_LEAP; 1995 else 1996 algs |= WPA_AUTH_ALG_LEAP; 1997 } 1998 } 1999#endif /* IEEE8021X_EAPOL */ 2000 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs); 2001 if (ssid->auth_alg) { 2002 algs = ssid->auth_alg; 2003 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 2004 "0x%x", algs); 2005 } 2006 2007 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 2008 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 2009 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 2010 int try_opportunistic; 2011 try_opportunistic = (ssid->proactive_key_caching < 0 ? 2012 wpa_s->conf->okc : 2013 ssid->proactive_key_caching) && 2014 (ssid->proto & WPA_PROTO_RSN); 2015 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 2016 ssid, try_opportunistic) == 0) 2017 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 2018 wpa_ie_len = sizeof(wpa_ie); 2019 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 2020 wpa_ie, &wpa_ie_len)) { 2021 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 2022 "key management and encryption suites"); 2023 wpas_connect_work_done(wpa_s); 2024 return; 2025 } 2026 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && bss && 2027 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 2028 /* 2029 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 2030 * use non-WPA since the scan results did not indicate that the 2031 * AP is using WPA or WPA2. 2032 */ 2033 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2034 wpa_ie_len = 0; 2035 wpa_s->wpa_proto = 0; 2036 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 2037 wpa_ie_len = sizeof(wpa_ie); 2038 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 2039 wpa_ie, &wpa_ie_len)) { 2040 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA " 2041 "key management and encryption suites (no " 2042 "scan results)"); 2043 wpas_connect_work_done(wpa_s); 2044 return; 2045 } 2046#ifdef CONFIG_WPS 2047 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 2048 struct wpabuf *wps_ie; 2049 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 2050 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) { 2051 wpa_ie_len = wpabuf_len(wps_ie); 2052 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len); 2053 } else 2054 wpa_ie_len = 0; 2055 wpabuf_free(wps_ie); 2056 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2057 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY)) 2058 params.wps = WPS_MODE_PRIVACY; 2059 else 2060 params.wps = WPS_MODE_OPEN; 2061 wpa_s->wpa_proto = 0; 2062#endif /* CONFIG_WPS */ 2063 } else { 2064 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 2065 wpa_ie_len = 0; 2066 wpa_s->wpa_proto = 0; 2067 } 2068 2069#ifdef CONFIG_P2P 2070 if (wpa_s->global->p2p) { 2071 u8 *pos; 2072 size_t len; 2073 int res; 2074 pos = wpa_ie + wpa_ie_len; 2075 len = sizeof(wpa_ie) - wpa_ie_len; 2076 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 2077 ssid->p2p_group); 2078 if (res >= 0) 2079 wpa_ie_len += res; 2080 } 2081 2082 wpa_s->cross_connect_disallowed = 0; 2083 if (bss) { 2084 struct wpabuf *p2p; 2085 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 2086 if (p2p) { 2087 wpa_s->cross_connect_disallowed = 2088 p2p_get_cross_connect_disallowed(p2p); 2089 wpabuf_free(p2p); 2090 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross " 2091 "connection", 2092 wpa_s->cross_connect_disallowed ? 2093 "disallows" : "allows"); 2094 } 2095 } 2096 2097 os_memset(wpa_s->p2p_ip_addr_info, 0, sizeof(wpa_s->p2p_ip_addr_info)); 2098#endif /* CONFIG_P2P */ 2099 2100#ifdef CONFIG_HS20 2101 if (is_hs20_network(wpa_s, ssid, bss)) { 2102 struct wpabuf *hs20; 2103 hs20 = wpabuf_alloc(20); 2104 if (hs20) { 2105 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); 2106 size_t len; 2107 2108 wpas_hs20_add_indication(hs20, pps_mo_id); 2109 len = sizeof(wpa_ie) - wpa_ie_len; 2110 if (wpabuf_len(hs20) <= len) { 2111 os_memcpy(wpa_ie + wpa_ie_len, 2112 wpabuf_head(hs20), wpabuf_len(hs20)); 2113 wpa_ie_len += wpabuf_len(hs20); 2114 } 2115 wpabuf_free(hs20); 2116 } 2117 } 2118#endif /* CONFIG_HS20 */ 2119 2120 /* 2121 * Workaround: Add Extended Capabilities element only if the AP 2122 * included this element in Beacon/Probe Response frames. Some older 2123 * APs seem to have interoperability issues if this element is 2124 * included, so while the standard may require us to include the 2125 * element in all cases, it is justifiable to skip it to avoid 2126 * interoperability issues. 2127 */ 2128 if (!bss || wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB)) { 2129 u8 ext_capab[18]; 2130 int ext_capab_len; 2131 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, 2132 sizeof(ext_capab)); 2133 if (ext_capab_len > 0) { 2134 u8 *pos = wpa_ie; 2135 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN) 2136 pos += 2 + pos[1]; 2137 os_memmove(pos + ext_capab_len, pos, 2138 wpa_ie_len - (pos - wpa_ie)); 2139 wpa_ie_len += ext_capab_len; 2140 os_memcpy(pos, ext_capab, ext_capab_len); 2141 } 2142 } 2143 2144 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { 2145 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; 2146 size_t len; 2147 2148 len = sizeof(wpa_ie) - wpa_ie_len; 2149 if (wpabuf_len(buf) <= len) { 2150 os_memcpy(wpa_ie + wpa_ie_len, 2151 wpabuf_head(buf), wpabuf_len(buf)); 2152 wpa_ie_len += wpabuf_len(buf); 2153 } 2154 } 2155 2156 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL); 2157 use_crypt = 1; 2158 cipher_pairwise = wpa_s->pairwise_cipher; 2159 cipher_group = wpa_s->group_cipher; 2160 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 2161 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 2162 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) 2163 use_crypt = 0; 2164 if (wpa_set_wep_keys(wpa_s, ssid)) { 2165 use_crypt = 1; 2166 wep_keys_set = 1; 2167 } 2168 } 2169 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) 2170 use_crypt = 0; 2171 2172#ifdef IEEE8021X_EAPOL 2173 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 2174 if ((ssid->eapol_flags & 2175 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 2176 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 && 2177 !wep_keys_set) { 2178 use_crypt = 0; 2179 } else { 2180 /* Assume that dynamic WEP-104 keys will be used and 2181 * set cipher suites in order for drivers to expect 2182 * encryption. */ 2183 cipher_pairwise = cipher_group = WPA_CIPHER_WEP104; 2184 } 2185 } 2186#endif /* IEEE8021X_EAPOL */ 2187 2188 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2189 /* Set the key before (and later after) association */ 2190 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 2191 } 2192 2193 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 2194 if (bss) { 2195 params.ssid = bss->ssid; 2196 params.ssid_len = bss->ssid_len; 2197 if (!wpas_driver_bss_selection(wpa_s) || ssid->bssid_set) { 2198 wpa_printf(MSG_DEBUG, "Limit connection to BSSID " 2199 MACSTR " freq=%u MHz based on scan results " 2200 "(bssid_set=%d)", 2201 MAC2STR(bss->bssid), bss->freq, 2202 ssid->bssid_set); 2203 params.bssid = bss->bssid; 2204 params.freq.freq = bss->freq; 2205 } 2206 params.bssid_hint = bss->bssid; 2207 params.freq_hint = bss->freq; 2208 } else { 2209 params.ssid = ssid->ssid; 2210 params.ssid_len = ssid->ssid_len; 2211 } 2212 2213 if (ssid->mode == WPAS_MODE_IBSS && ssid->bssid_set && 2214 wpa_s->conf->ap_scan == 2) { 2215 params.bssid = ssid->bssid; 2216 params.fixed_bssid = 1; 2217 } 2218 2219 /* Initial frequency for IBSS/mesh */ 2220 if ((ssid->mode == WPAS_MODE_IBSS || ssid->mode == WPAS_MODE_MESH) && 2221 ssid->frequency > 0 && params.freq.freq == 0) 2222 ibss_mesh_setup_freq(wpa_s, ssid, ¶ms.freq); 2223 2224 if (ssid->mode == WPAS_MODE_IBSS) { 2225 params.fixed_freq = ssid->fixed_freq; 2226 if (ssid->beacon_int) 2227 params.beacon_int = ssid->beacon_int; 2228 else 2229 params.beacon_int = wpa_s->conf->beacon_int; 2230 } 2231 2232 params.wpa_ie = wpa_ie; 2233 params.wpa_ie_len = wpa_ie_len; 2234 params.pairwise_suite = cipher_pairwise; 2235 params.group_suite = cipher_group; 2236 params.key_mgmt_suite = wpa_s->key_mgmt; 2237 params.wpa_proto = wpa_s->wpa_proto; 2238 params.auth_alg = algs; 2239 params.mode = ssid->mode; 2240 params.bg_scan_period = ssid->bg_scan_period; 2241 for (i = 0; i < NUM_WEP_KEYS; i++) { 2242 if (ssid->wep_key_len[i]) 2243 params.wep_key[i] = ssid->wep_key[i]; 2244 params.wep_key_len[i] = ssid->wep_key_len[i]; 2245 } 2246 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 2247 2248 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 2249 (params.key_mgmt_suite == WPA_KEY_MGMT_PSK || 2250 params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK)) { 2251 params.passphrase = ssid->passphrase; 2252 if (ssid->psk_set) 2253 params.psk = ssid->psk; 2254 } 2255 2256 if (wpa_s->conf->key_mgmt_offload) { 2257 if (params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X || 2258 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SHA256 || 2259 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B || 2260 params.key_mgmt_suite == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) 2261 params.req_key_mgmt_offload = 2262 ssid->proactive_key_caching < 0 ? 2263 wpa_s->conf->okc : ssid->proactive_key_caching; 2264 else 2265 params.req_key_mgmt_offload = 1; 2266 2267 if ((params.key_mgmt_suite == WPA_KEY_MGMT_PSK || 2268 params.key_mgmt_suite == WPA_KEY_MGMT_PSK_SHA256 || 2269 params.key_mgmt_suite == WPA_KEY_MGMT_FT_PSK) && 2270 ssid->psk_set) 2271 params.psk = ssid->psk; 2272 } 2273 2274 params.drop_unencrypted = use_crypt; 2275 2276#ifdef CONFIG_IEEE80211W 2277 params.mgmt_frame_protection = wpas_get_ssid_pmf(wpa_s, ssid); 2278 if (params.mgmt_frame_protection != NO_MGMT_FRAME_PROTECTION && bss) { 2279 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 2280 struct wpa_ie_data ie; 2281 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 && 2282 ie.capabilities & 2283 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 2284 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports " 2285 "MFP: require MFP"); 2286 params.mgmt_frame_protection = 2287 MGMT_FRAME_PROTECTION_REQUIRED; 2288 } 2289 } 2290#endif /* CONFIG_IEEE80211W */ 2291 2292 params.p2p = ssid->p2p_group; 2293 2294 if (wpa_s->parent->set_sta_uapsd) 2295 params.uapsd = wpa_s->parent->sta_uapsd; 2296 else 2297 params.uapsd = -1; 2298 2299#ifdef CONFIG_HT_OVERRIDES 2300 os_memset(&htcaps, 0, sizeof(htcaps)); 2301 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 2302 params.htcaps = (u8 *) &htcaps; 2303 params.htcaps_mask = (u8 *) &htcaps_mask; 2304 wpa_supplicant_apply_ht_overrides(wpa_s, ssid, ¶ms); 2305#endif /* CONFIG_HT_OVERRIDES */ 2306#ifdef CONFIG_VHT_OVERRIDES 2307 os_memset(&vhtcaps, 0, sizeof(vhtcaps)); 2308 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); 2309 params.vhtcaps = &vhtcaps; 2310 params.vhtcaps_mask = &vhtcaps_mask; 2311 wpa_supplicant_apply_vht_overrides(wpa_s, ssid, ¶ms); 2312#endif /* CONFIG_VHT_OVERRIDES */ 2313 2314#ifdef CONFIG_P2P 2315 /* 2316 * If multi-channel concurrency is not supported, check for any 2317 * frequency conflict. In case of any frequency conflict, remove the 2318 * least prioritized connection. 2319 */ 2320 if (wpa_s->num_multichan_concurrent < 2) { 2321 int freq, num; 2322 num = get_shared_radio_freqs(wpa_s, &freq, 1); 2323 if (num > 0 && freq > 0 && freq != params.freq.freq) { 2324 wpa_printf(MSG_DEBUG, 2325 "Assoc conflicting freq found (%d != %d)", 2326 freq, params.freq.freq); 2327 if (wpas_p2p_handle_frequency_conflicts( 2328 wpa_s, params.freq.freq, ssid) < 0) { 2329 wpas_connect_work_done(wpa_s); 2330 return; 2331 } 2332 } 2333 } 2334#endif /* CONFIG_P2P */ 2335 2336 ret = wpa_drv_associate(wpa_s, ¶ms); 2337 if (ret < 0) { 2338 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver " 2339 "failed"); 2340 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) { 2341 /* 2342 * The driver is known to mean what is saying, so we 2343 * can stop right here; the association will not 2344 * succeed. 2345 */ 2346 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 2347 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 2348 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 2349 return; 2350 } 2351 /* try to continue anyway; new association will be tried again 2352 * after timeout */ 2353 assoc_failed = 1; 2354 } 2355 2356 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 2357 /* Set the key after the association just in case association 2358 * cleared the previously configured key. */ 2359 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 2360 /* No need to timeout authentication since there is no key 2361 * management. */ 2362 wpa_supplicant_cancel_auth_timeout(wpa_s); 2363 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 2364#ifdef CONFIG_IBSS_RSN 2365 } else if (ssid->mode == WPAS_MODE_IBSS && 2366 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 2367 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 2368 /* 2369 * RSN IBSS authentication is per-STA and we can disable the 2370 * per-BSSID authentication. 2371 */ 2372 wpa_supplicant_cancel_auth_timeout(wpa_s); 2373#endif /* CONFIG_IBSS_RSN */ 2374 } else { 2375 /* Timeout for IEEE 802.11 authentication and association */ 2376 int timeout = 60; 2377 2378 if (assoc_failed) { 2379 /* give IBSS a bit more time */ 2380 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5; 2381 } else if (wpa_s->conf->ap_scan == 1) { 2382 /* give IBSS a bit more time */ 2383 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10; 2384 } 2385 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 2386 } 2387 2388 if (wep_keys_set && 2389 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC)) { 2390 /* Set static WEP keys again */ 2391 wpa_set_wep_keys(wpa_s, ssid); 2392 } 2393 2394 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) { 2395 /* 2396 * Do not allow EAP session resumption between different 2397 * network configurations. 2398 */ 2399 eapol_sm_invalidate_cached_session(wpa_s->eapol); 2400 } 2401 old_ssid = wpa_s->current_ssid; 2402 wpa_s->current_ssid = ssid; 2403 wpa_s->current_bss = bss; 2404 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 2405 wpa_supplicant_initiate_eapol(wpa_s); 2406 if (old_ssid != wpa_s->current_ssid) 2407 wpas_notify_network_changed(wpa_s); 2408} 2409 2410 2411static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s, 2412 const u8 *addr) 2413{ 2414 struct wpa_ssid *old_ssid; 2415 2416 wpas_connect_work_done(wpa_s); 2417 wpa_clear_keys(wpa_s, addr); 2418 old_ssid = wpa_s->current_ssid; 2419 wpa_supplicant_mark_disassoc(wpa_s); 2420 wpa_sm_set_config(wpa_s->wpa, NULL); 2421 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 2422 if (old_ssid != wpa_s->current_ssid) 2423 wpas_notify_network_changed(wpa_s); 2424 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 2425} 2426 2427 2428/** 2429 * wpa_supplicant_deauthenticate - Deauthenticate the current connection 2430 * @wpa_s: Pointer to wpa_supplicant data 2431 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame 2432 * 2433 * This function is used to request %wpa_supplicant to deauthenticate from the 2434 * current AP. 2435 */ 2436void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s, 2437 int reason_code) 2438{ 2439 u8 *addr = NULL; 2440 union wpa_event_data event; 2441 int zero_addr = 0; 2442 2443 wpa_dbg(wpa_s, MSG_DEBUG, "Request to deauthenticate - bssid=" MACSTR 2444 " pending_bssid=" MACSTR " reason=%d state=%s", 2445 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid), 2446 reason_code, wpa_supplicant_state_txt(wpa_s->wpa_state)); 2447 2448 if (!is_zero_ether_addr(wpa_s->bssid)) 2449 addr = wpa_s->bssid; 2450 else if (!is_zero_ether_addr(wpa_s->pending_bssid) && 2451 (wpa_s->wpa_state == WPA_AUTHENTICATING || 2452 wpa_s->wpa_state == WPA_ASSOCIATING)) 2453 addr = wpa_s->pending_bssid; 2454 else if (wpa_s->wpa_state == WPA_ASSOCIATING) { 2455 /* 2456 * When using driver-based BSS selection, we may not know the 2457 * BSSID with which we are currently trying to associate. We 2458 * need to notify the driver of this disconnection even in such 2459 * a case, so use the all zeros address here. 2460 */ 2461 addr = wpa_s->bssid; 2462 zero_addr = 1; 2463 } 2464 2465#ifdef CONFIG_TDLS 2466 wpa_tdls_teardown_peers(wpa_s->wpa); 2467#endif /* CONFIG_TDLS */ 2468 2469#ifdef CONFIG_MESH 2470 if (wpa_s->ifmsh) { 2471 wpa_msg_ctrl(wpa_s, MSG_INFO, MESH_GROUP_REMOVED "%s", 2472 wpa_s->ifname); 2473 wpa_supplicant_leave_mesh(wpa_s); 2474 } 2475#endif /* CONFIG_MESH */ 2476 2477 if (addr) { 2478 wpa_drv_deauthenticate(wpa_s, addr, reason_code); 2479 os_memset(&event, 0, sizeof(event)); 2480 event.deauth_info.reason_code = (u16) reason_code; 2481 event.deauth_info.locally_generated = 1; 2482 wpa_supplicant_event(wpa_s, EVENT_DEAUTH, &event); 2483 if (zero_addr) 2484 addr = NULL; 2485 } 2486 2487 wpa_supplicant_clear_connection(wpa_s, addr); 2488} 2489 2490static void wpa_supplicant_enable_one_network(struct wpa_supplicant *wpa_s, 2491 struct wpa_ssid *ssid) 2492{ 2493 if (!ssid || !ssid->disabled || ssid->disabled == 2) 2494 return; 2495 2496 ssid->disabled = 0; 2497 wpas_clear_temp_disabled(wpa_s, ssid, 1); 2498 wpas_notify_network_enabled_changed(wpa_s, ssid); 2499 2500 /* 2501 * Try to reassociate since there is no current configuration and a new 2502 * network was made available. 2503 */ 2504 if (!wpa_s->current_ssid && !wpa_s->disconnected) 2505 wpa_s->reassociate = 1; 2506} 2507 2508 2509/** 2510 * wpa_supplicant_enable_network - Mark a configured network as enabled 2511 * @wpa_s: wpa_supplicant structure for a network interface 2512 * @ssid: wpa_ssid structure for a configured network or %NULL 2513 * 2514 * Enables the specified network or all networks if no network specified. 2515 */ 2516void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s, 2517 struct wpa_ssid *ssid) 2518{ 2519 if (ssid == NULL) { 2520 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 2521 wpa_supplicant_enable_one_network(wpa_s, ssid); 2522 } else 2523 wpa_supplicant_enable_one_network(wpa_s, ssid); 2524 2525 if (wpa_s->reassociate && !wpa_s->disconnected) { 2526 if (wpa_s->sched_scanning) { 2527 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan to add " 2528 "new network to scan filters"); 2529 wpa_supplicant_cancel_sched_scan(wpa_s); 2530 } 2531 2532 if (wpa_supplicant_fast_associate(wpa_s) != 1) 2533 wpa_supplicant_req_scan(wpa_s, 0, 0); 2534 } 2535} 2536 2537 2538/** 2539 * wpa_supplicant_disable_network - Mark a configured network as disabled 2540 * @wpa_s: wpa_supplicant structure for a network interface 2541 * @ssid: wpa_ssid structure for a configured network or %NULL 2542 * 2543 * Disables the specified network or all networks if no network specified. 2544 */ 2545void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s, 2546 struct wpa_ssid *ssid) 2547{ 2548 struct wpa_ssid *other_ssid; 2549 int was_disabled; 2550 2551 if (ssid == NULL) { 2552 if (wpa_s->sched_scanning) 2553 wpa_supplicant_cancel_sched_scan(wpa_s); 2554 2555 for (other_ssid = wpa_s->conf->ssid; other_ssid; 2556 other_ssid = other_ssid->next) { 2557 was_disabled = other_ssid->disabled; 2558 if (was_disabled == 2) 2559 continue; /* do not change persistent P2P group 2560 * data */ 2561 2562 other_ssid->disabled = 1; 2563 2564 if (was_disabled != other_ssid->disabled) 2565 wpas_notify_network_enabled_changed( 2566 wpa_s, other_ssid); 2567 } 2568 if (wpa_s->current_ssid) 2569 wpa_supplicant_deauthenticate( 2570 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2571 } else if (ssid->disabled != 2) { 2572 if (ssid == wpa_s->current_ssid) 2573 wpa_supplicant_deauthenticate( 2574 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2575 2576 was_disabled = ssid->disabled; 2577 2578 ssid->disabled = 1; 2579 2580 if (was_disabled != ssid->disabled) { 2581 wpas_notify_network_enabled_changed(wpa_s, ssid); 2582 if (wpa_s->sched_scanning) { 2583 wpa_printf(MSG_DEBUG, "Stop ongoing sched_scan " 2584 "to remove network from filters"); 2585 wpa_supplicant_cancel_sched_scan(wpa_s); 2586 wpa_supplicant_req_scan(wpa_s, 0, 0); 2587 } 2588 } 2589 } 2590} 2591 2592 2593/** 2594 * wpa_supplicant_select_network - Attempt association with a network 2595 * @wpa_s: wpa_supplicant structure for a network interface 2596 * @ssid: wpa_ssid structure for a configured network or %NULL for any network 2597 */ 2598void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s, 2599 struct wpa_ssid *ssid) 2600{ 2601 2602 struct wpa_ssid *other_ssid; 2603 int disconnected = 0; 2604 2605 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) { 2606 wpa_s->own_disconnect_req = 1; 2607 wpa_supplicant_deauthenticate( 2608 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 2609 disconnected = 1; 2610 } 2611 2612 if (ssid) 2613 wpas_clear_temp_disabled(wpa_s, ssid, 1); 2614 2615 /* 2616 * Mark all other networks disabled or mark all networks enabled if no 2617 * network specified. 2618 */ 2619 for (other_ssid = wpa_s->conf->ssid; other_ssid; 2620 other_ssid = other_ssid->next) { 2621 int was_disabled = other_ssid->disabled; 2622 if (was_disabled == 2) 2623 continue; /* do not change persistent P2P group data */ 2624 2625 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0; 2626 if (was_disabled && !other_ssid->disabled) 2627 wpas_clear_temp_disabled(wpa_s, other_ssid, 0); 2628 2629 if (was_disabled != other_ssid->disabled) 2630 wpas_notify_network_enabled_changed(wpa_s, other_ssid); 2631 } 2632 2633 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) { 2634 /* We are already associated with the selected network */ 2635 wpa_printf(MSG_DEBUG, "Already associated with the " 2636 "selected network - do nothing"); 2637 return; 2638 } 2639 2640 if (ssid) { 2641 wpa_s->current_ssid = ssid; 2642 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 2643 wpa_s->connect_without_scan = 2644 (ssid->mode == WPAS_MODE_MESH) ? ssid : NULL; 2645 2646 /* 2647 * Don't optimize next scan freqs since a new ESS has been 2648 * selected. 2649 */ 2650 os_free(wpa_s->next_scan_freqs); 2651 wpa_s->next_scan_freqs = NULL; 2652 } else { 2653 wpa_s->connect_without_scan = NULL; 2654 } 2655 2656 wpa_s->disconnected = 0; 2657 wpa_s->reassociate = 1; 2658 2659 if (wpa_s->connect_without_scan || 2660 wpa_supplicant_fast_associate(wpa_s) != 1) 2661 wpa_supplicant_req_scan(wpa_s, 0, disconnected ? 100000 : 0); 2662 2663 if (ssid) 2664 wpas_notify_network_selected(wpa_s, ssid); 2665} 2666 2667 2668/** 2669 * wpas_set_pkcs11_engine_and_module_path - Set PKCS #11 engine and module path 2670 * @wpa_s: wpa_supplicant structure for a network interface 2671 * @pkcs11_engine_path: PKCS #11 engine path or NULL 2672 * @pkcs11_module_path: PKCS #11 module path or NULL 2673 * Returns: 0 on success; -1 on failure 2674 * 2675 * Sets the PKCS #11 engine and module path. Both have to be NULL or a valid 2676 * path. If resetting the EAPOL state machine with the new PKCS #11 engine and 2677 * module path fails the paths will be reset to the default value (NULL). 2678 */ 2679int wpas_set_pkcs11_engine_and_module_path(struct wpa_supplicant *wpa_s, 2680 const char *pkcs11_engine_path, 2681 const char *pkcs11_module_path) 2682{ 2683 char *pkcs11_engine_path_copy = NULL; 2684 char *pkcs11_module_path_copy = NULL; 2685 2686 if (pkcs11_engine_path != NULL) { 2687 pkcs11_engine_path_copy = os_strdup(pkcs11_engine_path); 2688 if (pkcs11_engine_path_copy == NULL) 2689 return -1; 2690 } 2691 if (pkcs11_module_path != NULL) { 2692 pkcs11_module_path_copy = os_strdup(pkcs11_module_path); 2693 if (pkcs11_module_path_copy == NULL) { 2694 os_free(pkcs11_engine_path_copy); 2695 return -1; 2696 } 2697 } 2698 2699 os_free(wpa_s->conf->pkcs11_engine_path); 2700 os_free(wpa_s->conf->pkcs11_module_path); 2701 wpa_s->conf->pkcs11_engine_path = pkcs11_engine_path_copy; 2702 wpa_s->conf->pkcs11_module_path = pkcs11_module_path_copy; 2703 2704 wpa_sm_set_eapol(wpa_s->wpa, NULL); 2705 eapol_sm_deinit(wpa_s->eapol); 2706 wpa_s->eapol = NULL; 2707 if (wpa_supplicant_init_eapol(wpa_s)) { 2708 /* Error -> Reset paths to the default value (NULL) once. */ 2709 if (pkcs11_engine_path != NULL && pkcs11_module_path != NULL) 2710 wpas_set_pkcs11_engine_and_module_path(wpa_s, NULL, 2711 NULL); 2712 2713 return -1; 2714 } 2715 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 2716 2717 return 0; 2718} 2719 2720 2721/** 2722 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface 2723 * @wpa_s: wpa_supplicant structure for a network interface 2724 * @ap_scan: AP scan mode 2725 * Returns: 0 if succeed or -1 if ap_scan has an invalid value 2726 * 2727 */ 2728int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan) 2729{ 2730 2731 int old_ap_scan; 2732 2733 if (ap_scan < 0 || ap_scan > 2) 2734 return -1; 2735 2736#ifdef ANDROID 2737 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan && 2738 wpa_s->wpa_state >= WPA_ASSOCIATING && 2739 wpa_s->wpa_state < WPA_COMPLETED) { 2740 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while " 2741 "associating", wpa_s->conf->ap_scan, ap_scan); 2742 return 0; 2743 } 2744#endif /* ANDROID */ 2745 2746 old_ap_scan = wpa_s->conf->ap_scan; 2747 wpa_s->conf->ap_scan = ap_scan; 2748 2749 if (old_ap_scan != wpa_s->conf->ap_scan) 2750 wpas_notify_ap_scan_changed(wpa_s); 2751 2752 return 0; 2753} 2754 2755 2756/** 2757 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age 2758 * @wpa_s: wpa_supplicant structure for a network interface 2759 * @expire_age: Expiration age in seconds 2760 * Returns: 0 if succeed or -1 if expire_age has an invalid value 2761 * 2762 */ 2763int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s, 2764 unsigned int bss_expire_age) 2765{ 2766 if (bss_expire_age < 10) { 2767 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u", 2768 bss_expire_age); 2769 return -1; 2770 } 2771 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec", 2772 bss_expire_age); 2773 wpa_s->conf->bss_expiration_age = bss_expire_age; 2774 2775 return 0; 2776} 2777 2778 2779/** 2780 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count 2781 * @wpa_s: wpa_supplicant structure for a network interface 2782 * @expire_count: number of scans after which an unseen BSS is reclaimed 2783 * Returns: 0 if succeed or -1 if expire_count has an invalid value 2784 * 2785 */ 2786int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s, 2787 unsigned int bss_expire_count) 2788{ 2789 if (bss_expire_count < 1) { 2790 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u", 2791 bss_expire_count); 2792 return -1; 2793 } 2794 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u", 2795 bss_expire_count); 2796 wpa_s->conf->bss_expiration_scan_count = bss_expire_count; 2797 2798 return 0; 2799} 2800 2801 2802/** 2803 * wpa_supplicant_set_scan_interval - Set scan interval 2804 * @wpa_s: wpa_supplicant structure for a network interface 2805 * @scan_interval: scan interval in seconds 2806 * Returns: 0 if succeed or -1 if scan_interval has an invalid value 2807 * 2808 */ 2809int wpa_supplicant_set_scan_interval(struct wpa_supplicant *wpa_s, 2810 int scan_interval) 2811{ 2812 if (scan_interval < 0) { 2813 wpa_msg(wpa_s, MSG_ERROR, "Invalid scan interval %d", 2814 scan_interval); 2815 return -1; 2816 } 2817 wpa_msg(wpa_s, MSG_DEBUG, "Setting scan interval: %d sec", 2818 scan_interval); 2819 wpa_supplicant_update_scan_int(wpa_s, scan_interval); 2820 2821 return 0; 2822} 2823 2824 2825/** 2826 * wpa_supplicant_set_debug_params - Set global debug params 2827 * @global: wpa_global structure 2828 * @debug_level: debug level 2829 * @debug_timestamp: determines if show timestamp in debug data 2830 * @debug_show_keys: determines if show keys in debug data 2831 * Returns: 0 if succeed or -1 if debug_level has wrong value 2832 */ 2833int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level, 2834 int debug_timestamp, int debug_show_keys) 2835{ 2836 2837 int old_level, old_timestamp, old_show_keys; 2838 2839 /* check for allowed debuglevels */ 2840 if (debug_level != MSG_EXCESSIVE && 2841 debug_level != MSG_MSGDUMP && 2842 debug_level != MSG_DEBUG && 2843 debug_level != MSG_INFO && 2844 debug_level != MSG_WARNING && 2845 debug_level != MSG_ERROR) 2846 return -1; 2847 2848 old_level = wpa_debug_level; 2849 old_timestamp = wpa_debug_timestamp; 2850 old_show_keys = wpa_debug_show_keys; 2851 2852 wpa_debug_level = debug_level; 2853 wpa_debug_timestamp = debug_timestamp ? 1 : 0; 2854 wpa_debug_show_keys = debug_show_keys ? 1 : 0; 2855 2856 if (wpa_debug_level != old_level) 2857 wpas_notify_debug_level_changed(global); 2858 if (wpa_debug_timestamp != old_timestamp) 2859 wpas_notify_debug_timestamp_changed(global); 2860 if (wpa_debug_show_keys != old_show_keys) 2861 wpas_notify_debug_show_keys_changed(global); 2862 2863 return 0; 2864} 2865 2866 2867/** 2868 * wpa_supplicant_get_ssid - Get a pointer to the current network structure 2869 * @wpa_s: Pointer to wpa_supplicant data 2870 * Returns: A pointer to the current network structure or %NULL on failure 2871 */ 2872struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s) 2873{ 2874 struct wpa_ssid *entry; 2875 u8 ssid[MAX_SSID_LEN]; 2876 int res; 2877 size_t ssid_len; 2878 u8 bssid[ETH_ALEN]; 2879 int wired; 2880 2881 res = wpa_drv_get_ssid(wpa_s, ssid); 2882 if (res < 0) { 2883 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from " 2884 "driver"); 2885 return NULL; 2886 } 2887 ssid_len = res; 2888 2889 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 2890 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from " 2891 "driver"); 2892 return NULL; 2893 } 2894 2895 wired = wpa_s->conf->ap_scan == 0 && 2896 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED); 2897 2898 entry = wpa_s->conf->ssid; 2899 while (entry) { 2900 if (!wpas_network_disabled(wpa_s, entry) && 2901 ((ssid_len == entry->ssid_len && 2902 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) && 2903 (!entry->bssid_set || 2904 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2905 return entry; 2906#ifdef CONFIG_WPS 2907 if (!wpas_network_disabled(wpa_s, entry) && 2908 (entry->key_mgmt & WPA_KEY_MGMT_WPS) && 2909 (entry->ssid == NULL || entry->ssid_len == 0) && 2910 (!entry->bssid_set || 2911 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 2912 return entry; 2913#endif /* CONFIG_WPS */ 2914 2915 if (!wpas_network_disabled(wpa_s, entry) && entry->bssid_set && 2916 entry->ssid_len == 0 && 2917 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0) 2918 return entry; 2919 2920 entry = entry->next; 2921 } 2922 2923 return NULL; 2924} 2925 2926 2927static int select_driver(struct wpa_supplicant *wpa_s, int i) 2928{ 2929 struct wpa_global *global = wpa_s->global; 2930 2931 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) { 2932 global->drv_priv[i] = wpa_drivers[i]->global_init(); 2933 if (global->drv_priv[i] == NULL) { 2934 wpa_printf(MSG_ERROR, "Failed to initialize driver " 2935 "'%s'", wpa_drivers[i]->name); 2936 return -1; 2937 } 2938 } 2939 2940 wpa_s->driver = wpa_drivers[i]; 2941 wpa_s->global_drv_priv = global->drv_priv[i]; 2942 2943 return 0; 2944} 2945 2946 2947static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s, 2948 const char *name) 2949{ 2950 int i; 2951 size_t len; 2952 const char *pos, *driver = name; 2953 2954 if (wpa_s == NULL) 2955 return -1; 2956 2957 if (wpa_drivers[0] == NULL) { 2958 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into " 2959 "wpa_supplicant"); 2960 return -1; 2961 } 2962 2963 if (name == NULL) { 2964 /* default to first driver in the list */ 2965 return select_driver(wpa_s, 0); 2966 } 2967 2968 do { 2969 pos = os_strchr(driver, ','); 2970 if (pos) 2971 len = pos - driver; 2972 else 2973 len = os_strlen(driver); 2974 2975 for (i = 0; wpa_drivers[i]; i++) { 2976 if (os_strlen(wpa_drivers[i]->name) == len && 2977 os_strncmp(driver, wpa_drivers[i]->name, len) == 2978 0) { 2979 /* First driver that succeeds wins */ 2980 if (select_driver(wpa_s, i) == 0) 2981 return 0; 2982 } 2983 } 2984 2985 driver = pos + 1; 2986 } while (pos); 2987 2988 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name); 2989 return -1; 2990} 2991 2992 2993/** 2994 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant 2995 * @ctx: Context pointer (wpa_s); this is the ctx variable registered 2996 * with struct wpa_driver_ops::init() 2997 * @src_addr: Source address of the EAPOL frame 2998 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header) 2999 * @len: Length of the EAPOL data 3000 * 3001 * This function is called for each received EAPOL frame. Most driver 3002 * interfaces rely on more generic OS mechanism for receiving frames through 3003 * l2_packet, but if such a mechanism is not available, the driver wrapper may 3004 * take care of received EAPOL frames and deliver them to the core supplicant 3005 * code by calling this function. 3006 */ 3007void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr, 3008 const u8 *buf, size_t len) 3009{ 3010 struct wpa_supplicant *wpa_s = ctx; 3011 3012 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr)); 3013 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len); 3014 3015#ifdef CONFIG_PEERKEY 3016 if (wpa_s->wpa_state > WPA_ASSOCIATED && wpa_s->current_ssid && 3017 wpa_s->current_ssid->peerkey && 3018 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 3019 wpa_sm_rx_eapol_peerkey(wpa_s->wpa, src_addr, buf, len) == 1) { 3020 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: Processed PeerKey EAPOL-Key"); 3021 return; 3022 } 3023#endif /* CONFIG_PEERKEY */ 3024 3025 if (wpa_s->wpa_state < WPA_ASSOCIATED || 3026 (wpa_s->last_eapol_matches_bssid && 3027#ifdef CONFIG_AP 3028 !wpa_s->ap_iface && 3029#endif /* CONFIG_AP */ 3030 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) != 0)) { 3031 /* 3032 * There is possible race condition between receiving the 3033 * association event and the EAPOL frame since they are coming 3034 * through different paths from the driver. In order to avoid 3035 * issues in trying to process the EAPOL frame before receiving 3036 * association information, lets queue it for processing until 3037 * the association event is received. This may also be needed in 3038 * driver-based roaming case, so also use src_addr != BSSID as a 3039 * trigger if we have previously confirmed that the 3040 * Authenticator uses BSSID as the src_addr (which is not the 3041 * case with wired IEEE 802.1X). 3042 */ 3043 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing " 3044 "of received EAPOL frame (state=%s bssid=" MACSTR ")", 3045 wpa_supplicant_state_txt(wpa_s->wpa_state), 3046 MAC2STR(wpa_s->bssid)); 3047 wpabuf_free(wpa_s->pending_eapol_rx); 3048 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len); 3049 if (wpa_s->pending_eapol_rx) { 3050 os_get_reltime(&wpa_s->pending_eapol_rx_time); 3051 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr, 3052 ETH_ALEN); 3053 } 3054 return; 3055 } 3056 3057 wpa_s->last_eapol_matches_bssid = 3058 os_memcmp(src_addr, wpa_s->bssid, ETH_ALEN) == 0; 3059 3060#ifdef CONFIG_AP 3061 if (wpa_s->ap_iface) { 3062 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len); 3063 return; 3064 } 3065#endif /* CONFIG_AP */ 3066 3067 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 3068 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since " 3069 "no key management is configured"); 3070 return; 3071 } 3072 3073 if (wpa_s->eapol_received == 0 && 3074 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) || 3075 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 3076 wpa_s->wpa_state != WPA_COMPLETED) && 3077 (wpa_s->current_ssid == NULL || 3078 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) { 3079 /* Timeout for completing IEEE 802.1X and WPA authentication */ 3080 wpa_supplicant_req_auth_timeout( 3081 wpa_s, 3082 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 3083 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA || 3084 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ? 3085 70 : 10, 0); 3086 } 3087 wpa_s->eapol_received++; 3088 3089 if (wpa_s->countermeasures) { 3090 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped " 3091 "EAPOL packet"); 3092 return; 3093 } 3094 3095#ifdef CONFIG_IBSS_RSN 3096 if (wpa_s->current_ssid && 3097 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) { 3098 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len); 3099 return; 3100 } 3101#endif /* CONFIG_IBSS_RSN */ 3102 3103 /* Source address of the incoming EAPOL frame could be compared to the 3104 * current BSSID. However, it is possible that a centralized 3105 * Authenticator could be using another MAC address than the BSSID of 3106 * an AP, so just allow any address to be used for now. The replies are 3107 * still sent to the current BSSID (if available), though. */ 3108 3109 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN); 3110 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) && 3111 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0) 3112 return; 3113 wpa_drv_poll(wpa_s); 3114 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 3115 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len); 3116 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 3117 /* 3118 * Set portValid = TRUE here since we are going to skip 4-way 3119 * handshake processing which would normally set portValid. We 3120 * need this to allow the EAPOL state machines to be completed 3121 * without going through EAPOL-Key handshake. 3122 */ 3123 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 3124 } 3125} 3126 3127 3128int wpa_supplicant_update_mac_addr(struct wpa_supplicant *wpa_s) 3129{ 3130 if ((!wpa_s->p2p_mgmt || 3131 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) && 3132 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) { 3133 l2_packet_deinit(wpa_s->l2); 3134 wpa_s->l2 = l2_packet_init(wpa_s->ifname, 3135 wpa_drv_get_mac_addr(wpa_s), 3136 ETH_P_EAPOL, 3137 wpa_supplicant_rx_eapol, wpa_s, 0); 3138 if (wpa_s->l2 == NULL) 3139 return -1; 3140 } else { 3141 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 3142 if (addr) 3143 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 3144 } 3145 3146 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) { 3147 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address"); 3148 return -1; 3149 } 3150 3151 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 3152 3153 return 0; 3154} 3155 3156 3157static void wpa_supplicant_rx_eapol_bridge(void *ctx, const u8 *src_addr, 3158 const u8 *buf, size_t len) 3159{ 3160 struct wpa_supplicant *wpa_s = ctx; 3161 const struct l2_ethhdr *eth; 3162 3163 if (len < sizeof(*eth)) 3164 return; 3165 eth = (const struct l2_ethhdr *) buf; 3166 3167 if (os_memcmp(eth->h_dest, wpa_s->own_addr, ETH_ALEN) != 0 && 3168 !(eth->h_dest[0] & 0x01)) { 3169 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 3170 " (bridge - not for this interface - ignore)", 3171 MAC2STR(src_addr), MAC2STR(eth->h_dest)); 3172 return; 3173 } 3174 3175 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR " to " MACSTR 3176 " (bridge)", MAC2STR(src_addr), MAC2STR(eth->h_dest)); 3177 wpa_supplicant_rx_eapol(wpa_s, src_addr, buf + sizeof(*eth), 3178 len - sizeof(*eth)); 3179} 3180 3181 3182/** 3183 * wpa_supplicant_driver_init - Initialize driver interface parameters 3184 * @wpa_s: Pointer to wpa_supplicant data 3185 * Returns: 0 on success, -1 on failure 3186 * 3187 * This function is called to initialize driver interface parameters. 3188 * wpa_drv_init() must have been called before this function to initialize the 3189 * driver interface. 3190 */ 3191int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s) 3192{ 3193 static int interface_count = 0; 3194 3195 if (wpa_supplicant_update_mac_addr(wpa_s) < 0) 3196 return -1; 3197 3198 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR, 3199 MAC2STR(wpa_s->own_addr)); 3200 os_memcpy(wpa_s->perm_addr, wpa_s->own_addr, ETH_ALEN); 3201 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 3202 3203 if (wpa_s->bridge_ifname[0]) { 3204 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge " 3205 "interface '%s'", wpa_s->bridge_ifname); 3206 wpa_s->l2_br = l2_packet_init_bridge( 3207 wpa_s->bridge_ifname, wpa_s->ifname, wpa_s->own_addr, 3208 ETH_P_EAPOL, wpa_supplicant_rx_eapol_bridge, wpa_s, 1); 3209 if (wpa_s->l2_br == NULL) { 3210 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet " 3211 "connection for the bridge interface '%s'", 3212 wpa_s->bridge_ifname); 3213 return -1; 3214 } 3215 } 3216 3217 wpa_clear_keys(wpa_s, NULL); 3218 3219 /* Make sure that TKIP countermeasures are not left enabled (could 3220 * happen if wpa_supplicant is killed during countermeasures. */ 3221 wpa_drv_set_countermeasures(wpa_s, 0); 3222 3223 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver"); 3224 wpa_drv_flush_pmkid(wpa_s); 3225 3226 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; 3227 wpa_s->prev_scan_wildcard = 0; 3228 3229 if (wpa_supplicant_enabled_networks(wpa_s)) { 3230 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { 3231 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 3232 interface_count = 0; 3233 } 3234#ifndef ANDROID 3235 if (!wpa_s->p2p_mgmt && 3236 wpa_supplicant_delayed_sched_scan(wpa_s, 3237 interface_count % 3, 3238 100000)) 3239 wpa_supplicant_req_scan(wpa_s, interface_count % 3, 3240 100000); 3241#endif /* ANDROID */ 3242 interface_count++; 3243 } else 3244 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 3245 3246 return 0; 3247} 3248 3249 3250static int wpa_supplicant_daemon(const char *pid_file) 3251{ 3252 wpa_printf(MSG_DEBUG, "Daemonize.."); 3253 return os_daemonize(pid_file); 3254} 3255 3256 3257static struct wpa_supplicant * 3258wpa_supplicant_alloc(struct wpa_supplicant *parent) 3259{ 3260 struct wpa_supplicant *wpa_s; 3261 3262 wpa_s = os_zalloc(sizeof(*wpa_s)); 3263 if (wpa_s == NULL) 3264 return NULL; 3265 wpa_s->scan_req = INITIAL_SCAN_REQ; 3266 wpa_s->scan_interval = 5; 3267 wpa_s->new_connection = 1; 3268 wpa_s->parent = parent ? parent : wpa_s; 3269 wpa_s->sched_scanning = 0; 3270 3271 return wpa_s; 3272} 3273 3274 3275#ifdef CONFIG_HT_OVERRIDES 3276 3277static int wpa_set_htcap_mcs(struct wpa_supplicant *wpa_s, 3278 struct ieee80211_ht_capabilities *htcaps, 3279 struct ieee80211_ht_capabilities *htcaps_mask, 3280 const char *ht_mcs) 3281{ 3282 /* parse ht_mcs into hex array */ 3283 int i; 3284 const char *tmp = ht_mcs; 3285 char *end = NULL; 3286 3287 /* If ht_mcs is null, do not set anything */ 3288 if (!ht_mcs) 3289 return 0; 3290 3291 /* This is what we are setting in the kernel */ 3292 os_memset(&htcaps->supported_mcs_set, 0, IEEE80211_HT_MCS_MASK_LEN); 3293 3294 wpa_msg(wpa_s, MSG_DEBUG, "set_htcap, ht_mcs -:%s:-", ht_mcs); 3295 3296 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3297 errno = 0; 3298 long v = strtol(tmp, &end, 16); 3299 if (errno == 0) { 3300 wpa_msg(wpa_s, MSG_DEBUG, 3301 "htcap value[%i]: %ld end: %p tmp: %p", 3302 i, v, end, tmp); 3303 if (end == tmp) 3304 break; 3305 3306 htcaps->supported_mcs_set[i] = v; 3307 tmp = end; 3308 } else { 3309 wpa_msg(wpa_s, MSG_ERROR, 3310 "Failed to parse ht-mcs: %s, error: %s\n", 3311 ht_mcs, strerror(errno)); 3312 return -1; 3313 } 3314 } 3315 3316 /* 3317 * If we were able to parse any values, then set mask for the MCS set. 3318 */ 3319 if (i) { 3320 os_memset(&htcaps_mask->supported_mcs_set, 0xff, 3321 IEEE80211_HT_MCS_MASK_LEN - 1); 3322 /* skip the 3 reserved bits */ 3323 htcaps_mask->supported_mcs_set[IEEE80211_HT_MCS_MASK_LEN - 1] = 3324 0x1f; 3325 } 3326 3327 return 0; 3328} 3329 3330 3331static int wpa_disable_max_amsdu(struct wpa_supplicant *wpa_s, 3332 struct ieee80211_ht_capabilities *htcaps, 3333 struct ieee80211_ht_capabilities *htcaps_mask, 3334 int disabled) 3335{ 3336 le16 msk; 3337 3338 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_max_amsdu: %d", disabled); 3339 3340 if (disabled == -1) 3341 return 0; 3342 3343 msk = host_to_le16(HT_CAP_INFO_MAX_AMSDU_SIZE); 3344 htcaps_mask->ht_capabilities_info |= msk; 3345 if (disabled) 3346 htcaps->ht_capabilities_info &= msk; 3347 else 3348 htcaps->ht_capabilities_info |= msk; 3349 3350 return 0; 3351} 3352 3353 3354static int wpa_set_ampdu_factor(struct wpa_supplicant *wpa_s, 3355 struct ieee80211_ht_capabilities *htcaps, 3356 struct ieee80211_ht_capabilities *htcaps_mask, 3357 int factor) 3358{ 3359 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_factor: %d", factor); 3360 3361 if (factor == -1) 3362 return 0; 3363 3364 if (factor < 0 || factor > 3) { 3365 wpa_msg(wpa_s, MSG_ERROR, "ampdu_factor: %d out of range. " 3366 "Must be 0-3 or -1", factor); 3367 return -EINVAL; 3368 } 3369 3370 htcaps_mask->a_mpdu_params |= 0x3; /* 2 bits for factor */ 3371 htcaps->a_mpdu_params &= ~0x3; 3372 htcaps->a_mpdu_params |= factor & 0x3; 3373 3374 return 0; 3375} 3376 3377 3378static int wpa_set_ampdu_density(struct wpa_supplicant *wpa_s, 3379 struct ieee80211_ht_capabilities *htcaps, 3380 struct ieee80211_ht_capabilities *htcaps_mask, 3381 int density) 3382{ 3383 wpa_msg(wpa_s, MSG_DEBUG, "set_ampdu_density: %d", density); 3384 3385 if (density == -1) 3386 return 0; 3387 3388 if (density < 0 || density > 7) { 3389 wpa_msg(wpa_s, MSG_ERROR, 3390 "ampdu_density: %d out of range. Must be 0-7 or -1.", 3391 density); 3392 return -EINVAL; 3393 } 3394 3395 htcaps_mask->a_mpdu_params |= 0x1C; 3396 htcaps->a_mpdu_params &= ~(0x1C); 3397 htcaps->a_mpdu_params |= (density << 2) & 0x1C; 3398 3399 return 0; 3400} 3401 3402 3403static int wpa_set_disable_ht40(struct wpa_supplicant *wpa_s, 3404 struct ieee80211_ht_capabilities *htcaps, 3405 struct ieee80211_ht_capabilities *htcaps_mask, 3406 int disabled) 3407{ 3408 /* Masking these out disables HT40 */ 3409 le16 msk = host_to_le16(HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET | 3410 HT_CAP_INFO_SHORT_GI40MHZ); 3411 3412 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ht40: %d", disabled); 3413 3414 if (disabled) 3415 htcaps->ht_capabilities_info &= ~msk; 3416 else 3417 htcaps->ht_capabilities_info |= msk; 3418 3419 htcaps_mask->ht_capabilities_info |= msk; 3420 3421 return 0; 3422} 3423 3424 3425static int wpa_set_disable_sgi(struct wpa_supplicant *wpa_s, 3426 struct ieee80211_ht_capabilities *htcaps, 3427 struct ieee80211_ht_capabilities *htcaps_mask, 3428 int disabled) 3429{ 3430 /* Masking these out disables SGI */ 3431 le16 msk = host_to_le16(HT_CAP_INFO_SHORT_GI20MHZ | 3432 HT_CAP_INFO_SHORT_GI40MHZ); 3433 3434 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_sgi: %d", disabled); 3435 3436 if (disabled) 3437 htcaps->ht_capabilities_info &= ~msk; 3438 else 3439 htcaps->ht_capabilities_info |= msk; 3440 3441 htcaps_mask->ht_capabilities_info |= msk; 3442 3443 return 0; 3444} 3445 3446 3447static int wpa_set_disable_ldpc(struct wpa_supplicant *wpa_s, 3448 struct ieee80211_ht_capabilities *htcaps, 3449 struct ieee80211_ht_capabilities *htcaps_mask, 3450 int disabled) 3451{ 3452 /* Masking these out disables LDPC */ 3453 le16 msk = host_to_le16(HT_CAP_INFO_LDPC_CODING_CAP); 3454 3455 wpa_msg(wpa_s, MSG_DEBUG, "set_disable_ldpc: %d", disabled); 3456 3457 if (disabled) 3458 htcaps->ht_capabilities_info &= ~msk; 3459 else 3460 htcaps->ht_capabilities_info |= msk; 3461 3462 htcaps_mask->ht_capabilities_info |= msk; 3463 3464 return 0; 3465} 3466 3467 3468void wpa_supplicant_apply_ht_overrides( 3469 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 3470 struct wpa_driver_associate_params *params) 3471{ 3472 struct ieee80211_ht_capabilities *htcaps; 3473 struct ieee80211_ht_capabilities *htcaps_mask; 3474 3475 if (!ssid) 3476 return; 3477 3478 params->disable_ht = ssid->disable_ht; 3479 if (!params->htcaps || !params->htcaps_mask) 3480 return; 3481 3482 htcaps = (struct ieee80211_ht_capabilities *) params->htcaps; 3483 htcaps_mask = (struct ieee80211_ht_capabilities *) params->htcaps_mask; 3484 wpa_set_htcap_mcs(wpa_s, htcaps, htcaps_mask, ssid->ht_mcs); 3485 wpa_disable_max_amsdu(wpa_s, htcaps, htcaps_mask, 3486 ssid->disable_max_amsdu); 3487 wpa_set_ampdu_factor(wpa_s, htcaps, htcaps_mask, ssid->ampdu_factor); 3488 wpa_set_ampdu_density(wpa_s, htcaps, htcaps_mask, ssid->ampdu_density); 3489 wpa_set_disable_ht40(wpa_s, htcaps, htcaps_mask, ssid->disable_ht40); 3490 wpa_set_disable_sgi(wpa_s, htcaps, htcaps_mask, ssid->disable_sgi); 3491 wpa_set_disable_ldpc(wpa_s, htcaps, htcaps_mask, ssid->disable_ldpc); 3492 3493 if (ssid->ht40_intolerant) { 3494 le16 bit = host_to_le16(HT_CAP_INFO_40MHZ_INTOLERANT); 3495 htcaps->ht_capabilities_info |= bit; 3496 htcaps_mask->ht_capabilities_info |= bit; 3497 } 3498} 3499 3500#endif /* CONFIG_HT_OVERRIDES */ 3501 3502 3503#ifdef CONFIG_VHT_OVERRIDES 3504void wpa_supplicant_apply_vht_overrides( 3505 struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 3506 struct wpa_driver_associate_params *params) 3507{ 3508 struct ieee80211_vht_capabilities *vhtcaps; 3509 struct ieee80211_vht_capabilities *vhtcaps_mask; 3510 3511 if (!ssid) 3512 return; 3513 3514 params->disable_vht = ssid->disable_vht; 3515 3516 vhtcaps = (void *) params->vhtcaps; 3517 vhtcaps_mask = (void *) params->vhtcaps_mask; 3518 3519 if (!vhtcaps || !vhtcaps_mask) 3520 return; 3521 3522 vhtcaps->vht_capabilities_info = ssid->vht_capa; 3523 vhtcaps_mask->vht_capabilities_info = ssid->vht_capa_mask; 3524 3525#ifdef CONFIG_HT_OVERRIDES 3526 /* if max ampdu is <= 3, we have to make the HT cap the same */ 3527 if (ssid->vht_capa_mask & VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) { 3528 int max_ampdu; 3529 3530 max_ampdu = (ssid->vht_capa & 3531 VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX) >> 3532 VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MAX_SHIFT; 3533 3534 max_ampdu = max_ampdu < 3 ? max_ampdu : 3; 3535 wpa_set_ampdu_factor(wpa_s, 3536 (void *) params->htcaps, 3537 (void *) params->htcaps_mask, 3538 max_ampdu); 3539 } 3540#endif /* CONFIG_HT_OVERRIDES */ 3541 3542#define OVERRIDE_MCS(i) \ 3543 if (ssid->vht_tx_mcs_nss_ ##i >= 0) { \ 3544 vhtcaps_mask->vht_supported_mcs_set.tx_map |= \ 3545 3 << 2 * (i - 1); \ 3546 vhtcaps->vht_supported_mcs_set.tx_map |= \ 3547 ssid->vht_tx_mcs_nss_ ##i << 2 * (i - 1); \ 3548 } \ 3549 if (ssid->vht_rx_mcs_nss_ ##i >= 0) { \ 3550 vhtcaps_mask->vht_supported_mcs_set.rx_map |= \ 3551 3 << 2 * (i - 1); \ 3552 vhtcaps->vht_supported_mcs_set.rx_map |= \ 3553 ssid->vht_rx_mcs_nss_ ##i << 2 * (i - 1); \ 3554 } 3555 3556 OVERRIDE_MCS(1); 3557 OVERRIDE_MCS(2); 3558 OVERRIDE_MCS(3); 3559 OVERRIDE_MCS(4); 3560 OVERRIDE_MCS(5); 3561 OVERRIDE_MCS(6); 3562 OVERRIDE_MCS(7); 3563 OVERRIDE_MCS(8); 3564} 3565#endif /* CONFIG_VHT_OVERRIDES */ 3566 3567 3568static int pcsc_reader_init(struct wpa_supplicant *wpa_s) 3569{ 3570#ifdef PCSC_FUNCS 3571 size_t len; 3572 3573 if (!wpa_s->conf->pcsc_reader) 3574 return 0; 3575 3576 wpa_s->scard = scard_init(wpa_s->conf->pcsc_reader); 3577 if (!wpa_s->scard) 3578 return 1; 3579 3580 if (wpa_s->conf->pcsc_pin && 3581 scard_set_pin(wpa_s->scard, wpa_s->conf->pcsc_pin) < 0) { 3582 scard_deinit(wpa_s->scard); 3583 wpa_s->scard = NULL; 3584 wpa_msg(wpa_s, MSG_ERROR, "PC/SC PIN validation failed"); 3585 return -1; 3586 } 3587 3588 len = sizeof(wpa_s->imsi) - 1; 3589 if (scard_get_imsi(wpa_s->scard, wpa_s->imsi, &len)) { 3590 scard_deinit(wpa_s->scard); 3591 wpa_s->scard = NULL; 3592 wpa_msg(wpa_s, MSG_ERROR, "Could not read IMSI"); 3593 return -1; 3594 } 3595 wpa_s->imsi[len] = '\0'; 3596 3597 wpa_s->mnc_len = scard_get_mnc_len(wpa_s->scard); 3598 3599 wpa_printf(MSG_DEBUG, "SCARD: IMSI %s (MNC length %d)", 3600 wpa_s->imsi, wpa_s->mnc_len); 3601 3602 wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); 3603 eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); 3604#endif /* PCSC_FUNCS */ 3605 3606 return 0; 3607} 3608 3609 3610int wpas_init_ext_pw(struct wpa_supplicant *wpa_s) 3611{ 3612 char *val, *pos; 3613 3614 ext_password_deinit(wpa_s->ext_pw); 3615 wpa_s->ext_pw = NULL; 3616 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, NULL); 3617 3618 if (!wpa_s->conf->ext_password_backend) 3619 return 0; 3620 3621 val = os_strdup(wpa_s->conf->ext_password_backend); 3622 if (val == NULL) 3623 return -1; 3624 pos = os_strchr(val, ':'); 3625 if (pos) 3626 *pos++ = '\0'; 3627 3628 wpa_printf(MSG_DEBUG, "EXT PW: Initialize backend '%s'", val); 3629 3630 wpa_s->ext_pw = ext_password_init(val, pos); 3631 os_free(val); 3632 if (wpa_s->ext_pw == NULL) { 3633 wpa_printf(MSG_DEBUG, "EXT PW: Failed to initialize backend"); 3634 return -1; 3635 } 3636 eapol_sm_set_ext_pw_ctx(wpa_s->eapol, wpa_s->ext_pw); 3637 3638 return 0; 3639} 3640 3641 3642static int wpas_set_wowlan_triggers(struct wpa_supplicant *wpa_s, 3643 const struct wpa_driver_capa *capa) 3644{ 3645 struct wowlan_triggers *triggers; 3646 int ret = 0; 3647 3648 if (!wpa_s->conf->wowlan_triggers) 3649 return 0; 3650 3651 triggers = wpa_get_wowlan_triggers(wpa_s->conf->wowlan_triggers, capa); 3652 if (triggers) { 3653 ret = wpa_drv_wowlan(wpa_s, triggers); 3654 os_free(triggers); 3655 } 3656 return ret; 3657} 3658 3659 3660static struct wpa_radio * radio_add_interface(struct wpa_supplicant *wpa_s, 3661 const char *rn) 3662{ 3663 struct wpa_supplicant *iface = wpa_s->global->ifaces; 3664 struct wpa_radio *radio; 3665 3666 while (rn && iface) { 3667 radio = iface->radio; 3668 if (radio && os_strcmp(rn, radio->name) == 0) { 3669 wpa_printf(MSG_DEBUG, "Add interface %s to existing radio %s", 3670 wpa_s->ifname, rn); 3671 dl_list_add(&radio->ifaces, &wpa_s->radio_list); 3672 return radio; 3673 } 3674 3675 iface = iface->next; 3676 } 3677 3678 wpa_printf(MSG_DEBUG, "Add interface %s to a new radio %s", 3679 wpa_s->ifname, rn ? rn : "N/A"); 3680 radio = os_zalloc(sizeof(*radio)); 3681 if (radio == NULL) 3682 return NULL; 3683 3684 if (rn) 3685 os_strlcpy(radio->name, rn, sizeof(radio->name)); 3686 dl_list_init(&radio->ifaces); 3687 dl_list_init(&radio->work); 3688 dl_list_add(&radio->ifaces, &wpa_s->radio_list); 3689 3690 return radio; 3691} 3692 3693 3694static void radio_work_free(struct wpa_radio_work *work) 3695{ 3696 if (work->wpa_s->scan_work == work) { 3697 /* This should not really happen. */ 3698 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as scan_work", 3699 work->type, work, work->started); 3700 work->wpa_s->scan_work = NULL; 3701 } 3702 3703#ifdef CONFIG_P2P 3704 if (work->wpa_s->p2p_scan_work == work) { 3705 /* This should not really happen. */ 3706 wpa_dbg(work->wpa_s, MSG_INFO, "Freeing radio work '%s'@%p (started=%d) that is marked as p2p_scan_work", 3707 work->type, work, work->started); 3708 work->wpa_s->p2p_scan_work = NULL; 3709 } 3710#endif /* CONFIG_P2P */ 3711 3712 dl_list_del(&work->list); 3713 os_free(work); 3714} 3715 3716 3717static void radio_start_next_work(void *eloop_ctx, void *timeout_ctx) 3718{ 3719 struct wpa_radio *radio = eloop_ctx; 3720 struct wpa_radio_work *work; 3721 struct os_reltime now, diff; 3722 struct wpa_supplicant *wpa_s; 3723 3724 work = dl_list_first(&radio->work, struct wpa_radio_work, list); 3725 if (work == NULL) 3726 return; 3727 3728 if (work->started) 3729 return; /* already started and still in progress */ 3730 3731 wpa_s = dl_list_first(&radio->ifaces, struct wpa_supplicant, 3732 radio_list); 3733 if (wpa_s && wpa_s->radio->external_scan_running) { 3734 wpa_printf(MSG_DEBUG, "Delay radio work start until externally triggered scan completes"); 3735 return; 3736 } 3737 3738 os_get_reltime(&now); 3739 os_reltime_sub(&now, &work->time, &diff); 3740 wpa_dbg(work->wpa_s, MSG_DEBUG, "Starting radio work '%s'@%p after %ld.%06ld second wait", 3741 work->type, work, diff.sec, diff.usec); 3742 work->started = 1; 3743 work->time = now; 3744 work->cb(work, 0); 3745} 3746 3747 3748/* 3749 * This function removes both started and pending radio works running on 3750 * the provided interface's radio. 3751 * Prior to the removal of the radio work, its callback (cb) is called with 3752 * deinit set to be 1. Each work's callback is responsible for clearing its 3753 * internal data and restoring to a correct state. 3754 * @wpa_s: wpa_supplicant data 3755 * @type: type of works to be removed 3756 * @remove_all: 1 to remove all the works on this radio, 0 to remove only 3757 * this interface's works. 3758 */ 3759void radio_remove_works(struct wpa_supplicant *wpa_s, 3760 const char *type, int remove_all) 3761{ 3762 struct wpa_radio_work *work, *tmp; 3763 struct wpa_radio *radio = wpa_s->radio; 3764 3765 dl_list_for_each_safe(work, tmp, &radio->work, struct wpa_radio_work, 3766 list) { 3767 if (type && os_strcmp(type, work->type) != 0) 3768 continue; 3769 3770 /* skip other ifaces' works */ 3771 if (!remove_all && work->wpa_s != wpa_s) 3772 continue; 3773 3774 wpa_dbg(wpa_s, MSG_DEBUG, "Remove radio work '%s'@%p%s", 3775 work->type, work, work->started ? " (started)" : ""); 3776 work->cb(work, 1); 3777 radio_work_free(work); 3778 } 3779 3780 /* in case we removed the started work */ 3781 radio_work_check_next(wpa_s); 3782} 3783 3784 3785static void radio_remove_interface(struct wpa_supplicant *wpa_s) 3786{ 3787 struct wpa_radio *radio = wpa_s->radio; 3788 3789 if (!radio) 3790 return; 3791 3792 wpa_printf(MSG_DEBUG, "Remove interface %s from radio %s", 3793 wpa_s->ifname, radio->name); 3794 dl_list_del(&wpa_s->radio_list); 3795 radio_remove_works(wpa_s, NULL, 0); 3796 wpa_s->radio = NULL; 3797 if (!dl_list_empty(&radio->ifaces)) 3798 return; /* Interfaces remain for this radio */ 3799 3800 wpa_printf(MSG_DEBUG, "Remove radio %s", radio->name); 3801 eloop_cancel_timeout(radio_start_next_work, radio, NULL); 3802 os_free(radio); 3803} 3804 3805 3806void radio_work_check_next(struct wpa_supplicant *wpa_s) 3807{ 3808 struct wpa_radio *radio = wpa_s->radio; 3809 3810 if (dl_list_empty(&radio->work)) 3811 return; 3812 if (wpa_s->ext_work_in_progress) { 3813 wpa_printf(MSG_DEBUG, 3814 "External radio work in progress - delay start of pending item"); 3815 return; 3816 } 3817 eloop_cancel_timeout(radio_start_next_work, radio, NULL); 3818 eloop_register_timeout(0, 0, radio_start_next_work, radio, NULL); 3819} 3820 3821 3822/** 3823 * radio_add_work - Add a radio work item 3824 * @wpa_s: Pointer to wpa_supplicant data 3825 * @freq: Frequency of the offchannel operation in MHz or 0 3826 * @type: Unique identifier for each type of work 3827 * @next: Force as the next work to be executed 3828 * @cb: Callback function for indicating when radio is available 3829 * @ctx: Context pointer for the work (work->ctx in cb()) 3830 * Returns: 0 on success, -1 on failure 3831 * 3832 * This function is used to request time for an operation that requires 3833 * exclusive radio control. Once the radio is available, the registered callback 3834 * function will be called. radio_work_done() must be called once the exclusive 3835 * radio operation has been completed, so that the radio is freed for other 3836 * operations. The special case of deinit=1 is used to free the context data 3837 * during interface removal. That does not allow the callback function to start 3838 * the radio operation, i.e., it must free any resources allocated for the radio 3839 * work and return. 3840 * 3841 * The @freq parameter can be used to indicate a single channel on which the 3842 * offchannel operation will occur. This may allow multiple radio work 3843 * operations to be performed in parallel if they apply for the same channel. 3844 * Setting this to 0 indicates that the work item may use multiple channels or 3845 * requires exclusive control of the radio. 3846 */ 3847int radio_add_work(struct wpa_supplicant *wpa_s, unsigned int freq, 3848 const char *type, int next, 3849 void (*cb)(struct wpa_radio_work *work, int deinit), 3850 void *ctx) 3851{ 3852 struct wpa_radio_work *work; 3853 int was_empty; 3854 3855 work = os_zalloc(sizeof(*work)); 3856 if (work == NULL) 3857 return -1; 3858 wpa_dbg(wpa_s, MSG_DEBUG, "Add radio work '%s'@%p", type, work); 3859 os_get_reltime(&work->time); 3860 work->freq = freq; 3861 work->type = type; 3862 work->wpa_s = wpa_s; 3863 work->cb = cb; 3864 work->ctx = ctx; 3865 3866 was_empty = dl_list_empty(&wpa_s->radio->work); 3867 if (next) 3868 dl_list_add(&wpa_s->radio->work, &work->list); 3869 else 3870 dl_list_add_tail(&wpa_s->radio->work, &work->list); 3871 if (was_empty) { 3872 wpa_dbg(wpa_s, MSG_DEBUG, "First radio work item in the queue - schedule start immediately"); 3873 radio_work_check_next(wpa_s); 3874 } 3875 3876 return 0; 3877} 3878 3879 3880/** 3881 * radio_work_done - Indicate that a radio work item has been completed 3882 * @work: Completed work 3883 * 3884 * This function is called once the callback function registered with 3885 * radio_add_work() has completed its work. 3886 */ 3887void radio_work_done(struct wpa_radio_work *work) 3888{ 3889 struct wpa_supplicant *wpa_s = work->wpa_s; 3890 struct os_reltime now, diff; 3891 unsigned int started = work->started; 3892 3893 os_get_reltime(&now); 3894 os_reltime_sub(&now, &work->time, &diff); 3895 wpa_dbg(wpa_s, MSG_DEBUG, "Radio work '%s'@%p %s in %ld.%06ld seconds", 3896 work->type, work, started ? "done" : "canceled", 3897 diff.sec, diff.usec); 3898 radio_work_free(work); 3899 if (started) 3900 radio_work_check_next(wpa_s); 3901} 3902 3903 3904struct wpa_radio_work * 3905radio_work_pending(struct wpa_supplicant *wpa_s, const char *type) 3906{ 3907 struct wpa_radio_work *work; 3908 struct wpa_radio *radio = wpa_s->radio; 3909 3910 dl_list_for_each(work, &radio->work, struct wpa_radio_work, list) { 3911 if (work->wpa_s == wpa_s && os_strcmp(work->type, type) == 0) 3912 return work; 3913 } 3914 3915 return NULL; 3916} 3917 3918 3919static int wpas_init_driver(struct wpa_supplicant *wpa_s, 3920 struct wpa_interface *iface) 3921{ 3922 const char *ifname, *driver, *rn; 3923 3924 driver = iface->driver; 3925next_driver: 3926 if (wpa_supplicant_set_driver(wpa_s, driver) < 0) 3927 return -1; 3928 3929 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname); 3930 if (wpa_s->drv_priv == NULL) { 3931 const char *pos; 3932 pos = driver ? os_strchr(driver, ',') : NULL; 3933 if (pos) { 3934 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize " 3935 "driver interface - try next driver wrapper"); 3936 driver = pos + 1; 3937 goto next_driver; 3938 } 3939 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver " 3940 "interface"); 3941 return -1; 3942 } 3943 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) { 3944 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected " 3945 "driver_param '%s'", wpa_s->conf->driver_param); 3946 return -1; 3947 } 3948 3949 ifname = wpa_drv_get_ifname(wpa_s); 3950 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) { 3951 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced " 3952 "interface name with '%s'", ifname); 3953 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname)); 3954 } 3955 3956 rn = wpa_driver_get_radio_name(wpa_s); 3957 if (rn && rn[0] == '\0') 3958 rn = NULL; 3959 3960 wpa_s->radio = radio_add_interface(wpa_s, rn); 3961 if (wpa_s->radio == NULL) 3962 return -1; 3963 3964 return 0; 3965} 3966 3967 3968static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s, 3969 struct wpa_interface *iface) 3970{ 3971 struct wpa_driver_capa capa; 3972 int capa_res; 3973 3974 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver " 3975 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname, 3976 iface->confname ? iface->confname : "N/A", 3977 iface->driver ? iface->driver : "default", 3978 iface->ctrl_interface ? iface->ctrl_interface : "N/A", 3979 iface->bridge_ifname ? iface->bridge_ifname : "N/A"); 3980 3981 if (iface->confname) { 3982#ifdef CONFIG_BACKEND_FILE 3983 wpa_s->confname = os_rel2abs_path(iface->confname); 3984 if (wpa_s->confname == NULL) { 3985 wpa_printf(MSG_ERROR, "Failed to get absolute path " 3986 "for configuration file '%s'.", 3987 iface->confname); 3988 return -1; 3989 } 3990 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'", 3991 iface->confname, wpa_s->confname); 3992#else /* CONFIG_BACKEND_FILE */ 3993 wpa_s->confname = os_strdup(iface->confname); 3994#endif /* CONFIG_BACKEND_FILE */ 3995 wpa_s->conf = wpa_config_read(wpa_s->confname, NULL); 3996 if (wpa_s->conf == NULL) { 3997 wpa_printf(MSG_ERROR, "Failed to read or parse " 3998 "configuration '%s'.", wpa_s->confname); 3999 return -1; 4000 } 4001 wpa_s->confanother = os_rel2abs_path(iface->confanother); 4002 wpa_config_read(wpa_s->confanother, wpa_s->conf); 4003 4004 /* 4005 * Override ctrl_interface and driver_param if set on command 4006 * line. 4007 */ 4008 if (iface->ctrl_interface) { 4009 os_free(wpa_s->conf->ctrl_interface); 4010 wpa_s->conf->ctrl_interface = 4011 os_strdup(iface->ctrl_interface); 4012 } 4013 4014 if (iface->driver_param) { 4015 os_free(wpa_s->conf->driver_param); 4016 wpa_s->conf->driver_param = 4017 os_strdup(iface->driver_param); 4018 } 4019 4020 if (iface->p2p_mgmt && !iface->ctrl_interface) { 4021 os_free(wpa_s->conf->ctrl_interface); 4022 wpa_s->conf->ctrl_interface = NULL; 4023 } 4024 } else 4025 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface, 4026 iface->driver_param); 4027 4028 if (wpa_s->conf == NULL) { 4029 wpa_printf(MSG_ERROR, "\nNo configuration found."); 4030 return -1; 4031 } 4032 4033 if (iface->ifname == NULL) { 4034 wpa_printf(MSG_ERROR, "\nInterface name is required."); 4035 return -1; 4036 } 4037 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) { 4038 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.", 4039 iface->ifname); 4040 return -1; 4041 } 4042 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname)); 4043 4044 if (iface->bridge_ifname) { 4045 if (os_strlen(iface->bridge_ifname) >= 4046 sizeof(wpa_s->bridge_ifname)) { 4047 wpa_printf(MSG_ERROR, "\nToo long bridge interface " 4048 "name '%s'.", iface->bridge_ifname); 4049 return -1; 4050 } 4051 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname, 4052 sizeof(wpa_s->bridge_ifname)); 4053 } 4054 4055 /* RSNA Supplicant Key Management - INITIALIZE */ 4056 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 4057 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 4058 4059 /* Initialize driver interface and register driver event handler before 4060 * L2 receive handler so that association events are processed before 4061 * EAPOL-Key packets if both become available for the same select() 4062 * call. */ 4063 if (wpas_init_driver(wpa_s, iface) < 0) 4064 return -1; 4065 4066 if (wpa_supplicant_init_wpa(wpa_s) < 0) 4067 return -1; 4068 4069 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, 4070 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname : 4071 NULL); 4072 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 4073 4074 if (wpa_s->conf->dot11RSNAConfigPMKLifetime && 4075 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME, 4076 wpa_s->conf->dot11RSNAConfigPMKLifetime)) { 4077 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4078 "dot11RSNAConfigPMKLifetime"); 4079 return -1; 4080 } 4081 4082 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold && 4083 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD, 4084 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) { 4085 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4086 "dot11RSNAConfigPMKReauthThreshold"); 4087 return -1; 4088 } 4089 4090 if (wpa_s->conf->dot11RSNAConfigSATimeout && 4091 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, 4092 wpa_s->conf->dot11RSNAConfigSATimeout)) { 4093 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for " 4094 "dot11RSNAConfigSATimeout"); 4095 return -1; 4096 } 4097 4098 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s, 4099 &wpa_s->hw.num_modes, 4100 &wpa_s->hw.flags); 4101 if (wpa_s->hw.modes) { 4102 u16 i; 4103 4104 for (i = 0; i < wpa_s->hw.num_modes; i++) { 4105 if (wpa_s->hw.modes[i].vht_capab) { 4106 wpa_s->hw_capab = CAPAB_VHT; 4107 break; 4108 } 4109 4110 if (wpa_s->hw.modes[i].ht_capab & 4111 HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET) 4112 wpa_s->hw_capab = CAPAB_HT40; 4113 else if (wpa_s->hw.modes[i].ht_capab && 4114 wpa_s->hw_capab == CAPAB_NO_HT_VHT) 4115 wpa_s->hw_capab = CAPAB_HT; 4116 } 4117 } 4118 4119 capa_res = wpa_drv_get_capa(wpa_s, &capa); 4120 if (capa_res == 0) { 4121 wpa_s->drv_capa_known = 1; 4122 wpa_s->drv_flags = capa.flags; 4123 wpa_s->drv_enc = capa.enc; 4124 wpa_s->drv_smps_modes = capa.smps_modes; 4125 wpa_s->drv_rrm_flags = capa.rrm_flags; 4126 wpa_s->probe_resp_offloads = capa.probe_resp_offloads; 4127 wpa_s->max_scan_ssids = capa.max_scan_ssids; 4128 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids; 4129 wpa_s->sched_scan_supported = capa.sched_scan_supported; 4130 wpa_s->max_match_sets = capa.max_match_sets; 4131 wpa_s->max_remain_on_chan = capa.max_remain_on_chan; 4132 wpa_s->max_stations = capa.max_stations; 4133 wpa_s->extended_capa = capa.extended_capa; 4134 wpa_s->extended_capa_mask = capa.extended_capa_mask; 4135 wpa_s->extended_capa_len = capa.extended_capa_len; 4136 wpa_s->num_multichan_concurrent = 4137 capa.num_multichan_concurrent; 4138 wpa_s->wmm_ac_supported = capa.wmm_ac_supported; 4139 4140 if (capa.mac_addr_rand_scan_supported) 4141 wpa_s->mac_addr_rand_supported |= MAC_ADDR_RAND_SCAN; 4142 if (wpa_s->sched_scan_supported && 4143 capa.mac_addr_rand_sched_scan_supported) 4144 wpa_s->mac_addr_rand_supported |= 4145 (MAC_ADDR_RAND_SCHED_SCAN | MAC_ADDR_RAND_PNO); 4146 } 4147 if (wpa_s->max_remain_on_chan == 0) 4148 wpa_s->max_remain_on_chan = 1000; 4149 4150 /* 4151 * Only take p2p_mgmt parameters when P2P Device is supported. 4152 * Doing it here as it determines whether l2_packet_init() will be done 4153 * during wpa_supplicant_driver_init(). 4154 */ 4155 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) 4156 wpa_s->p2p_mgmt = iface->p2p_mgmt; 4157 else 4158 iface->p2p_mgmt = 1; 4159 4160 if (wpa_s->num_multichan_concurrent == 0) 4161 wpa_s->num_multichan_concurrent = 1; 4162 4163 if (wpa_supplicant_driver_init(wpa_s) < 0) 4164 return -1; 4165 4166#ifdef CONFIG_TDLS 4167 if ((!iface->p2p_mgmt || 4168 !(wpa_s->drv_flags & 4169 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE)) && 4170 wpa_tdls_init(wpa_s->wpa)) 4171 return -1; 4172#endif /* CONFIG_TDLS */ 4173 4174 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] && 4175 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) { 4176 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country"); 4177 return -1; 4178 } 4179 4180 if (wpas_wps_init(wpa_s)) 4181 return -1; 4182 4183 if (wpa_supplicant_init_eapol(wpa_s) < 0) 4184 return -1; 4185 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 4186 4187 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 4188 if (wpa_s->ctrl_iface == NULL) { 4189 wpa_printf(MSG_ERROR, 4190 "Failed to initialize control interface '%s'.\n" 4191 "You may have another wpa_supplicant process " 4192 "already running or the file was\n" 4193 "left by an unclean termination of wpa_supplicant " 4194 "in which case you will need\n" 4195 "to manually remove this file before starting " 4196 "wpa_supplicant again.\n", 4197 wpa_s->conf->ctrl_interface); 4198 return -1; 4199 } 4200 4201 wpa_s->gas = gas_query_init(wpa_s); 4202 if (wpa_s->gas == NULL) { 4203 wpa_printf(MSG_ERROR, "Failed to initialize GAS query"); 4204 return -1; 4205 } 4206 4207 if (iface->p2p_mgmt && wpas_p2p_init(wpa_s->global, wpa_s) < 0) { 4208 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P"); 4209 return -1; 4210 } 4211 4212 if (wpa_bss_init(wpa_s) < 0) 4213 return -1; 4214 4215 /* 4216 * Set Wake-on-WLAN triggers, if configured. 4217 * Note: We don't restore/remove the triggers on shutdown (it doesn't 4218 * have effect anyway when the interface is down). 4219 */ 4220 if (capa_res == 0 && wpas_set_wowlan_triggers(wpa_s, &capa) < 0) 4221 return -1; 4222 4223#ifdef CONFIG_EAP_PROXY 4224{ 4225 size_t len; 4226 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, wpa_s->imsi, 4227 &len); 4228 if (wpa_s->mnc_len > 0) { 4229 wpa_s->imsi[len] = '\0'; 4230 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)", 4231 wpa_s->imsi, wpa_s->mnc_len); 4232 } else { 4233 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available"); 4234 } 4235} 4236#endif /* CONFIG_EAP_PROXY */ 4237 4238 if (pcsc_reader_init(wpa_s) < 0) 4239 return -1; 4240 4241 if (wpas_init_ext_pw(wpa_s) < 0) 4242 return -1; 4243 4244 wpas_rrm_reset(wpa_s); 4245 4246 return 0; 4247} 4248 4249 4250static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, 4251 int notify, int terminate) 4252{ 4253 struct wpa_global *global = wpa_s->global; 4254 struct wpa_supplicant *iface, *prev; 4255 4256 if (wpa_s == wpa_s->parent) 4257 wpas_p2p_group_remove(wpa_s, "*"); 4258 4259 iface = global->ifaces; 4260 while (iface) { 4261 if (iface == wpa_s || iface->parent != wpa_s) { 4262 iface = iface->next; 4263 continue; 4264 } 4265 wpa_printf(MSG_DEBUG, 4266 "Remove remaining child interface %s from parent %s", 4267 iface->ifname, wpa_s->ifname); 4268 prev = iface; 4269 iface = iface->next; 4270 wpa_supplicant_remove_iface(global, prev, terminate); 4271 } 4272 4273 wpa_s->disconnected = 1; 4274 if (wpa_s->drv_priv) { 4275 wpa_supplicant_deauthenticate(wpa_s, 4276 WLAN_REASON_DEAUTH_LEAVING); 4277 4278 wpa_drv_set_countermeasures(wpa_s, 0); 4279 wpa_clear_keys(wpa_s, NULL); 4280 } 4281 4282 wpa_supplicant_cleanup(wpa_s); 4283 wpas_p2p_deinit_iface(wpa_s); 4284 4285 wpas_ctrl_radio_work_flush(wpa_s); 4286 radio_remove_interface(wpa_s); 4287 4288 if (wpa_s->drv_priv) 4289 wpa_drv_deinit(wpa_s); 4290 4291 if (notify) 4292 wpas_notify_iface_removed(wpa_s); 4293 4294 if (terminate) 4295 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING); 4296 4297 if (wpa_s->ctrl_iface) { 4298 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 4299 wpa_s->ctrl_iface = NULL; 4300 } 4301 4302#ifdef CONFIG_MESH 4303 if (wpa_s->ifmsh) { 4304 wpa_supplicant_mesh_iface_deinit(wpa_s, wpa_s->ifmsh); 4305 wpa_s->ifmsh = NULL; 4306 } 4307#endif /* CONFIG_MESH */ 4308 4309 if (wpa_s->conf != NULL) { 4310 wpa_config_free(wpa_s->conf); 4311 wpa_s->conf = NULL; 4312 } 4313 4314 os_free(wpa_s); 4315} 4316 4317 4318/** 4319 * wpa_supplicant_add_iface - Add a new network interface 4320 * @global: Pointer to global data from wpa_supplicant_init() 4321 * @iface: Interface configuration options 4322 * @parent: Parent interface or %NULL to assign new interface as parent 4323 * Returns: Pointer to the created interface or %NULL on failure 4324 * 4325 * This function is used to add new network interfaces for %wpa_supplicant. 4326 * This can be called before wpa_supplicant_run() to add interfaces before the 4327 * main event loop has been started. In addition, new interfaces can be added 4328 * dynamically while %wpa_supplicant is already running. This could happen, 4329 * e.g., when a hotplug network adapter is inserted. 4330 */ 4331struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global, 4332 struct wpa_interface *iface, 4333 struct wpa_supplicant *parent) 4334{ 4335 struct wpa_supplicant *wpa_s; 4336 struct wpa_interface t_iface; 4337 struct wpa_ssid *ssid; 4338 4339 if (global == NULL || iface == NULL) 4340 return NULL; 4341 4342 wpa_s = wpa_supplicant_alloc(parent); 4343 if (wpa_s == NULL) 4344 return NULL; 4345 4346 wpa_s->global = global; 4347 4348 t_iface = *iface; 4349 if (global->params.override_driver) { 4350 wpa_printf(MSG_DEBUG, "Override interface parameter: driver " 4351 "('%s' -> '%s')", 4352 iface->driver, global->params.override_driver); 4353 t_iface.driver = global->params.override_driver; 4354 } 4355 if (global->params.override_ctrl_interface) { 4356 wpa_printf(MSG_DEBUG, "Override interface parameter: " 4357 "ctrl_interface ('%s' -> '%s')", 4358 iface->ctrl_interface, 4359 global->params.override_ctrl_interface); 4360 t_iface.ctrl_interface = 4361 global->params.override_ctrl_interface; 4362 } 4363 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) { 4364 wpa_printf(MSG_DEBUG, "Failed to add interface %s", 4365 iface->ifname); 4366 wpa_supplicant_deinit_iface(wpa_s, 0, 0); 4367 return NULL; 4368 } 4369 4370 if (iface->p2p_mgmt == 0) { 4371 /* Notify the control interfaces about new iface */ 4372 if (wpas_notify_iface_added(wpa_s)) { 4373 wpa_supplicant_deinit_iface(wpa_s, 1, 0); 4374 return NULL; 4375 } 4376 4377 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 4378 wpas_notify_network_added(wpa_s, ssid); 4379 } 4380 4381 wpa_s->next = global->ifaces; 4382 global->ifaces = wpa_s; 4383 4384 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname); 4385 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 4386 4387#ifdef CONFIG_P2P 4388 if (wpa_s->global->p2p == NULL && 4389 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) && 4390 wpas_p2p_add_p2pdev_interface(wpa_s, iface->conf_p2p_dev) < 0) { 4391 wpa_printf(MSG_INFO, 4392 "P2P: Failed to enable P2P Device interface"); 4393 /* Try to continue without. P2P will be disabled. */ 4394 } 4395#endif /* CONFIG_P2P */ 4396 4397 return wpa_s; 4398} 4399 4400 4401/** 4402 * wpa_supplicant_remove_iface - Remove a network interface 4403 * @global: Pointer to global data from wpa_supplicant_init() 4404 * @wpa_s: Pointer to the network interface to be removed 4405 * Returns: 0 if interface was removed, -1 if interface was not found 4406 * 4407 * This function can be used to dynamically remove network interfaces from 4408 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In 4409 * addition, this function is used to remove all remaining interfaces when 4410 * %wpa_supplicant is terminated. 4411 */ 4412int wpa_supplicant_remove_iface(struct wpa_global *global, 4413 struct wpa_supplicant *wpa_s, 4414 int terminate) 4415{ 4416 struct wpa_supplicant *prev; 4417#ifdef CONFIG_MESH 4418 unsigned int mesh_if_created = wpa_s->mesh_if_created; 4419 char *ifname = NULL; 4420#endif /* CONFIG_MESH */ 4421 4422 /* Remove interface from the global list of interfaces */ 4423 prev = global->ifaces; 4424 if (prev == wpa_s) { 4425 global->ifaces = wpa_s->next; 4426 } else { 4427 while (prev && prev->next != wpa_s) 4428 prev = prev->next; 4429 if (prev == NULL) 4430 return -1; 4431 prev->next = wpa_s->next; 4432 } 4433 4434 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname); 4435 4436#ifdef CONFIG_MESH 4437 if (mesh_if_created) { 4438 ifname = os_strdup(wpa_s->ifname); 4439 if (ifname == NULL) { 4440 wpa_dbg(wpa_s, MSG_ERROR, 4441 "mesh: Failed to malloc ifname"); 4442 return -1; 4443 } 4444 } 4445#endif /* CONFIG_MESH */ 4446 4447 if (global->p2p_group_formation == wpa_s) 4448 global->p2p_group_formation = NULL; 4449 if (global->p2p_invite_group == wpa_s) 4450 global->p2p_invite_group = NULL; 4451 wpa_supplicant_deinit_iface(wpa_s, 1, terminate); 4452 4453#ifdef CONFIG_MESH 4454 if (mesh_if_created) { 4455 wpa_drv_if_remove(global->ifaces, WPA_IF_MESH, ifname); 4456 os_free(ifname); 4457 } 4458#endif /* CONFIG_MESH */ 4459 4460 return 0; 4461} 4462 4463 4464/** 4465 * wpa_supplicant_get_eap_mode - Get the current EAP mode 4466 * @wpa_s: Pointer to the network interface 4467 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found 4468 */ 4469const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s) 4470{ 4471 const char *eapol_method; 4472 4473 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 && 4474 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 4475 return "NO-EAP"; 4476 } 4477 4478 eapol_method = eapol_sm_get_method_name(wpa_s->eapol); 4479 if (eapol_method == NULL) 4480 return "UNKNOWN-EAP"; 4481 4482 return eapol_method; 4483} 4484 4485 4486/** 4487 * wpa_supplicant_get_iface - Get a new network interface 4488 * @global: Pointer to global data from wpa_supplicant_init() 4489 * @ifname: Interface name 4490 * Returns: Pointer to the interface or %NULL if not found 4491 */ 4492struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global, 4493 const char *ifname) 4494{ 4495 struct wpa_supplicant *wpa_s; 4496 4497 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4498 if (os_strcmp(wpa_s->ifname, ifname) == 0) 4499 return wpa_s; 4500 } 4501 return NULL; 4502} 4503 4504 4505#ifndef CONFIG_NO_WPA_MSG 4506static const char * wpa_supplicant_msg_ifname_cb(void *ctx) 4507{ 4508 struct wpa_supplicant *wpa_s = ctx; 4509 if (wpa_s == NULL) 4510 return NULL; 4511 return wpa_s->ifname; 4512} 4513#endif /* CONFIG_NO_WPA_MSG */ 4514 4515 4516/** 4517 * wpa_supplicant_init - Initialize %wpa_supplicant 4518 * @params: Parameters for %wpa_supplicant 4519 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure 4520 * 4521 * This function is used to initialize %wpa_supplicant. After successful 4522 * initialization, the returned data pointer can be used to add and remove 4523 * network interfaces, and eventually, to deinitialize %wpa_supplicant. 4524 */ 4525struct wpa_global * wpa_supplicant_init(struct wpa_params *params) 4526{ 4527 struct wpa_global *global; 4528 int ret, i; 4529 4530 if (params == NULL) 4531 return NULL; 4532 4533#ifdef CONFIG_DRIVER_NDIS 4534 { 4535 void driver_ndis_init_ops(void); 4536 driver_ndis_init_ops(); 4537 } 4538#endif /* CONFIG_DRIVER_NDIS */ 4539 4540#ifndef CONFIG_NO_WPA_MSG 4541 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb); 4542#endif /* CONFIG_NO_WPA_MSG */ 4543 4544 if (params->wpa_debug_file_path) 4545 wpa_debug_open_file(params->wpa_debug_file_path); 4546 else 4547 wpa_debug_setup_stdout(); 4548 if (params->wpa_debug_syslog) 4549 wpa_debug_open_syslog(); 4550 if (params->wpa_debug_tracing) { 4551 ret = wpa_debug_open_linux_tracing(); 4552 if (ret) { 4553 wpa_printf(MSG_ERROR, 4554 "Failed to enable trace logging"); 4555 return NULL; 4556 } 4557 } 4558 4559 ret = eap_register_methods(); 4560 if (ret) { 4561 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 4562 if (ret == -2) 4563 wpa_printf(MSG_ERROR, "Two or more EAP methods used " 4564 "the same EAP type."); 4565 return NULL; 4566 } 4567 4568 global = os_zalloc(sizeof(*global)); 4569 if (global == NULL) 4570 return NULL; 4571 dl_list_init(&global->p2p_srv_bonjour); 4572 dl_list_init(&global->p2p_srv_upnp); 4573 global->params.daemonize = params->daemonize; 4574 global->params.wait_for_monitor = params->wait_for_monitor; 4575 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface; 4576 if (params->pid_file) 4577 global->params.pid_file = os_strdup(params->pid_file); 4578 if (params->ctrl_interface) 4579 global->params.ctrl_interface = 4580 os_strdup(params->ctrl_interface); 4581 if (params->ctrl_interface_group) 4582 global->params.ctrl_interface_group = 4583 os_strdup(params->ctrl_interface_group); 4584 if (params->override_driver) 4585 global->params.override_driver = 4586 os_strdup(params->override_driver); 4587 if (params->override_ctrl_interface) 4588 global->params.override_ctrl_interface = 4589 os_strdup(params->override_ctrl_interface); 4590 wpa_debug_level = global->params.wpa_debug_level = 4591 params->wpa_debug_level; 4592 wpa_debug_show_keys = global->params.wpa_debug_show_keys = 4593 params->wpa_debug_show_keys; 4594 wpa_debug_timestamp = global->params.wpa_debug_timestamp = 4595 params->wpa_debug_timestamp; 4596 4597 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR); 4598 4599 if (eloop_init()) { 4600 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 4601 wpa_supplicant_deinit(global); 4602 return NULL; 4603 } 4604 4605 random_init(params->entropy_file); 4606 4607 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global); 4608 if (global->ctrl_iface == NULL) { 4609 wpa_supplicant_deinit(global); 4610 return NULL; 4611 } 4612 4613 if (wpas_notify_supplicant_initialized(global)) { 4614 wpa_supplicant_deinit(global); 4615 return NULL; 4616 } 4617 4618 for (i = 0; wpa_drivers[i]; i++) 4619 global->drv_count++; 4620 if (global->drv_count == 0) { 4621 wpa_printf(MSG_ERROR, "No drivers enabled"); 4622 wpa_supplicant_deinit(global); 4623 return NULL; 4624 } 4625 global->drv_priv = os_calloc(global->drv_count, sizeof(void *)); 4626 if (global->drv_priv == NULL) { 4627 wpa_supplicant_deinit(global); 4628 return NULL; 4629 } 4630 4631#ifdef CONFIG_WIFI_DISPLAY 4632 if (wifi_display_init(global) < 0) { 4633 wpa_printf(MSG_ERROR, "Failed to initialize Wi-Fi Display"); 4634 wpa_supplicant_deinit(global); 4635 return NULL; 4636 } 4637#endif /* CONFIG_WIFI_DISPLAY */ 4638 4639 return global; 4640} 4641 4642 4643/** 4644 * wpa_supplicant_run - Run the %wpa_supplicant main event loop 4645 * @global: Pointer to global data from wpa_supplicant_init() 4646 * Returns: 0 after successful event loop run, -1 on failure 4647 * 4648 * This function starts the main event loop and continues running as long as 4649 * there are any remaining events. In most cases, this function is running as 4650 * long as the %wpa_supplicant process in still in use. 4651 */ 4652int wpa_supplicant_run(struct wpa_global *global) 4653{ 4654 struct wpa_supplicant *wpa_s; 4655 4656 if (global->params.daemonize && 4657 wpa_supplicant_daemon(global->params.pid_file)) 4658 return -1; 4659 4660 if (global->params.wait_for_monitor) { 4661 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) 4662 if (wpa_s->ctrl_iface) 4663 wpa_supplicant_ctrl_iface_wait( 4664 wpa_s->ctrl_iface); 4665 } 4666 4667 eloop_register_signal_terminate(wpa_supplicant_terminate, global); 4668 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); 4669 4670 eloop_run(); 4671 4672 return 0; 4673} 4674 4675 4676/** 4677 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant 4678 * @global: Pointer to global data from wpa_supplicant_init() 4679 * 4680 * This function is called to deinitialize %wpa_supplicant and to free all 4681 * allocated resources. Remaining network interfaces will also be removed. 4682 */ 4683void wpa_supplicant_deinit(struct wpa_global *global) 4684{ 4685 int i; 4686 4687 if (global == NULL) 4688 return; 4689 4690#ifdef CONFIG_WIFI_DISPLAY 4691 wifi_display_deinit(global); 4692#endif /* CONFIG_WIFI_DISPLAY */ 4693 4694 while (global->ifaces) 4695 wpa_supplicant_remove_iface(global, global->ifaces, 1); 4696 4697 if (global->ctrl_iface) 4698 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface); 4699 4700 wpas_notify_supplicant_deinitialized(global); 4701 4702 eap_peer_unregister_methods(); 4703#ifdef CONFIG_AP 4704 eap_server_unregister_methods(); 4705#endif /* CONFIG_AP */ 4706 4707 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) { 4708 if (!global->drv_priv[i]) 4709 continue; 4710 wpa_drivers[i]->global_deinit(global->drv_priv[i]); 4711 } 4712 os_free(global->drv_priv); 4713 4714 random_deinit(); 4715 4716 eloop_destroy(); 4717 4718 if (global->params.pid_file) { 4719 os_daemonize_terminate(global->params.pid_file); 4720 os_free(global->params.pid_file); 4721 } 4722 os_free(global->params.ctrl_interface); 4723 os_free(global->params.ctrl_interface_group); 4724 os_free(global->params.override_driver); 4725 os_free(global->params.override_ctrl_interface); 4726 4727 os_free(global->p2p_disallow_freq.range); 4728 os_free(global->p2p_go_avoid_freq.range); 4729 os_free(global->add_psk); 4730 4731 os_free(global); 4732 wpa_debug_close_syslog(); 4733 wpa_debug_close_file(); 4734 wpa_debug_close_linux_tracing(); 4735} 4736 4737 4738void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s) 4739{ 4740 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 4741 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4742 char country[3]; 4743 country[0] = wpa_s->conf->country[0]; 4744 country[1] = wpa_s->conf->country[1]; 4745 country[2] = '\0'; 4746 if (wpa_drv_set_country(wpa_s, country) < 0) { 4747 wpa_printf(MSG_ERROR, "Failed to set country code " 4748 "'%s'", country); 4749 } 4750 } 4751 4752 if (wpa_s->conf->changed_parameters & CFG_CHANGED_EXT_PW_BACKEND) 4753 wpas_init_ext_pw(wpa_s); 4754 4755#ifdef CONFIG_WPS 4756 wpas_wps_update_config(wpa_s); 4757#endif /* CONFIG_WPS */ 4758 wpas_p2p_update_config(wpa_s); 4759 wpa_s->conf->changed_parameters = 0; 4760} 4761 4762 4763void add_freq(int *freqs, int *num_freqs, int freq) 4764{ 4765 int i; 4766 4767 for (i = 0; i < *num_freqs; i++) { 4768 if (freqs[i] == freq) 4769 return; 4770 } 4771 4772 freqs[*num_freqs] = freq; 4773 (*num_freqs)++; 4774} 4775 4776 4777static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s) 4778{ 4779 struct wpa_bss *bss, *cbss; 4780 const int max_freqs = 10; 4781 int *freqs; 4782 int num_freqs = 0; 4783 4784 freqs = os_calloc(max_freqs + 1, sizeof(int)); 4785 if (freqs == NULL) 4786 return NULL; 4787 4788 cbss = wpa_s->current_bss; 4789 4790 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 4791 if (bss == cbss) 4792 continue; 4793 if (bss->ssid_len == cbss->ssid_len && 4794 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 && 4795 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) { 4796 add_freq(freqs, &num_freqs, bss->freq); 4797 if (num_freqs == max_freqs) 4798 break; 4799 } 4800 } 4801 4802 if (num_freqs == 0) { 4803 os_free(freqs); 4804 freqs = NULL; 4805 } 4806 4807 return freqs; 4808} 4809 4810 4811void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid) 4812{ 4813 int timeout; 4814 int count; 4815 int *freqs = NULL; 4816 4817 wpas_connect_work_done(wpa_s); 4818 4819 /* 4820 * Remove possible authentication timeout since the connection failed. 4821 */ 4822 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 4823 4824 /* 4825 * There is no point in blacklisting the AP if this event is 4826 * generated based on local request to disconnect. 4827 */ 4828 if (wpa_s->own_disconnect_req) { 4829 wpa_s->own_disconnect_req = 0; 4830 wpa_dbg(wpa_s, MSG_DEBUG, 4831 "Ignore connection failure due to local request to disconnect"); 4832 return; 4833 } 4834 if (wpa_s->disconnected) { 4835 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore connection failure " 4836 "indication since interface has been put into " 4837 "disconnected state"); 4838 return; 4839 } 4840 4841 /* 4842 * Add the failed BSSID into the blacklist and speed up next scan 4843 * attempt if there could be other APs that could accept association. 4844 * The current blacklist count indicates how many times we have tried 4845 * connecting to this AP and multiple attempts mean that other APs are 4846 * either not available or has already been tried, so that we can start 4847 * increasing the delay here to avoid constant scanning. 4848 */ 4849 count = wpa_blacklist_add(wpa_s, bssid); 4850 if (count == 1 && wpa_s->current_bss) { 4851 /* 4852 * This BSS was not in the blacklist before. If there is 4853 * another BSS available for the same ESS, we should try that 4854 * next. Otherwise, we may as well try this one once more 4855 * before allowing other, likely worse, ESSes to be considered. 4856 */ 4857 freqs = get_bss_freqs_in_ess(wpa_s); 4858 if (freqs) { 4859 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS " 4860 "has been seen; try it next"); 4861 wpa_blacklist_add(wpa_s, bssid); 4862 /* 4863 * On the next scan, go through only the known channels 4864 * used in this ESS based on previous scans to speed up 4865 * common load balancing use case. 4866 */ 4867 os_free(wpa_s->next_scan_freqs); 4868 wpa_s->next_scan_freqs = freqs; 4869 } 4870 } 4871 4872 /* 4873 * Add previous failure count in case the temporary blacklist was 4874 * cleared due to no other BSSes being available. 4875 */ 4876 count += wpa_s->extra_blacklist_count; 4877 4878 if (count > 3 && wpa_s->current_ssid) { 4879 wpa_printf(MSG_DEBUG, "Continuous association failures - " 4880 "consider temporary network disabling"); 4881 wpas_auth_failed(wpa_s, "CONN_FAILED"); 4882 } 4883 4884 switch (count) { 4885 case 1: 4886 timeout = 100; 4887 break; 4888 case 2: 4889 timeout = 500; 4890 break; 4891 case 3: 4892 timeout = 1000; 4893 break; 4894 case 4: 4895 timeout = 5000; 4896 break; 4897 default: 4898 timeout = 10000; 4899 break; 4900 } 4901 4902 wpa_dbg(wpa_s, MSG_DEBUG, "Blacklist count %d --> request scan in %d " 4903 "ms", count, timeout); 4904 4905 /* 4906 * TODO: if more than one possible AP is available in scan results, 4907 * could try the other ones before requesting a new scan. 4908 */ 4909 wpa_supplicant_req_scan(wpa_s, timeout / 1000, 4910 1000 * (timeout % 1000)); 4911} 4912 4913 4914int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s) 4915{ 4916 return wpa_s->conf->ap_scan == 2 || 4917 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION); 4918} 4919 4920 4921#if defined(CONFIG_CTRL_IFACE) || defined(CONFIG_CTRL_IFACE_DBUS_NEW) 4922int wpa_supplicant_ctrl_iface_ctrl_rsp_handle(struct wpa_supplicant *wpa_s, 4923 struct wpa_ssid *ssid, 4924 const char *field, 4925 const char *value) 4926{ 4927#ifdef IEEE8021X_EAPOL 4928 struct eap_peer_config *eap = &ssid->eap; 4929 4930 wpa_printf(MSG_DEBUG, "CTRL_IFACE: response handle field=%s", field); 4931 wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: response value", 4932 (const u8 *) value, os_strlen(value)); 4933 4934 switch (wpa_supplicant_ctrl_req_from_string(field)) { 4935 case WPA_CTRL_REQ_EAP_IDENTITY: 4936 os_free(eap->identity); 4937 eap->identity = (u8 *) os_strdup(value); 4938 eap->identity_len = os_strlen(value); 4939 eap->pending_req_identity = 0; 4940 if (ssid == wpa_s->current_ssid) 4941 wpa_s->reassociate = 1; 4942 break; 4943 case WPA_CTRL_REQ_EAP_PASSWORD: 4944 bin_clear_free(eap->password, eap->password_len); 4945 eap->password = (u8 *) os_strdup(value); 4946 eap->password_len = os_strlen(value); 4947 eap->pending_req_password = 0; 4948 if (ssid == wpa_s->current_ssid) 4949 wpa_s->reassociate = 1; 4950 break; 4951 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 4952 bin_clear_free(eap->new_password, eap->new_password_len); 4953 eap->new_password = (u8 *) os_strdup(value); 4954 eap->new_password_len = os_strlen(value); 4955 eap->pending_req_new_password = 0; 4956 if (ssid == wpa_s->current_ssid) 4957 wpa_s->reassociate = 1; 4958 break; 4959 case WPA_CTRL_REQ_EAP_PIN: 4960 str_clear_free(eap->pin); 4961 eap->pin = os_strdup(value); 4962 eap->pending_req_pin = 0; 4963 if (ssid == wpa_s->current_ssid) 4964 wpa_s->reassociate = 1; 4965 break; 4966 case WPA_CTRL_REQ_EAP_OTP: 4967 bin_clear_free(eap->otp, eap->otp_len); 4968 eap->otp = (u8 *) os_strdup(value); 4969 eap->otp_len = os_strlen(value); 4970 os_free(eap->pending_req_otp); 4971 eap->pending_req_otp = NULL; 4972 eap->pending_req_otp_len = 0; 4973 break; 4974 case WPA_CTRL_REQ_EAP_PASSPHRASE: 4975 str_clear_free(eap->private_key_passwd); 4976 eap->private_key_passwd = os_strdup(value); 4977 eap->pending_req_passphrase = 0; 4978 if (ssid == wpa_s->current_ssid) 4979 wpa_s->reassociate = 1; 4980 break; 4981 case WPA_CTRL_REQ_SIM: 4982 str_clear_free(eap->external_sim_resp); 4983 eap->external_sim_resp = os_strdup(value); 4984 break; 4985 case WPA_CTRL_REQ_PSK_PASSPHRASE: 4986 if (wpa_config_set(ssid, "psk", value, 0) < 0) 4987 return -1; 4988 ssid->mem_only_psk = 1; 4989 if (ssid->passphrase) 4990 wpa_config_update_psk(ssid); 4991 if (wpa_s->wpa_state == WPA_SCANNING && !wpa_s->scanning) 4992 wpa_supplicant_req_scan(wpa_s, 0, 0); 4993 break; 4994 default: 4995 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", field); 4996 return -1; 4997 } 4998 4999 return 0; 5000#else /* IEEE8021X_EAPOL */ 5001 wpa_printf(MSG_DEBUG, "CTRL_IFACE: IEEE 802.1X not included"); 5002 return -1; 5003#endif /* IEEE8021X_EAPOL */ 5004} 5005#endif /* CONFIG_CTRL_IFACE || CONFIG_CTRL_IFACE_DBUS_NEW */ 5006 5007 5008int wpas_network_disabled(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 5009{ 5010 int i; 5011 unsigned int drv_enc; 5012 5013 if (wpa_s->p2p_mgmt) 5014 return 1; /* no normal network profiles on p2p_mgmt interface */ 5015 5016 if (ssid == NULL) 5017 return 1; 5018 5019 if (ssid->disabled) 5020 return 1; 5021 5022 if (wpa_s->drv_capa_known) 5023 drv_enc = wpa_s->drv_enc; 5024 else 5025 drv_enc = (unsigned int) -1; 5026 5027 for (i = 0; i < NUM_WEP_KEYS; i++) { 5028 size_t len = ssid->wep_key_len[i]; 5029 if (len == 0) 5030 continue; 5031 if (len == 5 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP40)) 5032 continue; 5033 if (len == 13 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP104)) 5034 continue; 5035 if (len == 16 && (drv_enc & WPA_DRIVER_CAPA_ENC_WEP128)) 5036 continue; 5037 return 1; /* invalid WEP key */ 5038 } 5039 5040 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt) && !ssid->psk_set && 5041 (!ssid->passphrase || ssid->ssid_len != 0) && !ssid->ext_psk && 5042 !ssid->mem_only_psk) 5043 return 1; 5044 5045 return 0; 5046} 5047 5048 5049int wpas_get_ssid_pmf(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 5050{ 5051#ifdef CONFIG_IEEE80211W 5052 if (ssid == NULL || ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT) { 5053 if (wpa_s->conf->pmf == MGMT_FRAME_PROTECTION_OPTIONAL && 5054 !(wpa_s->drv_enc & WPA_DRIVER_CAPA_ENC_BIP)) { 5055 /* 5056 * Driver does not support BIP -- ignore pmf=1 default 5057 * since the connection with PMF would fail and the 5058 * configuration does not require PMF to be enabled. 5059 */ 5060 return NO_MGMT_FRAME_PROTECTION; 5061 } 5062 5063 return wpa_s->conf->pmf; 5064 } 5065 5066 return ssid->ieee80211w; 5067#else /* CONFIG_IEEE80211W */ 5068 return NO_MGMT_FRAME_PROTECTION; 5069#endif /* CONFIG_IEEE80211W */ 5070} 5071 5072 5073int wpas_is_p2p_prioritized(struct wpa_supplicant *wpa_s) 5074{ 5075 if (wpa_s->global->conc_pref == WPA_CONC_PREF_P2P) 5076 return 1; 5077 if (wpa_s->global->conc_pref == WPA_CONC_PREF_STA) 5078 return 0; 5079 return -1; 5080} 5081 5082 5083void wpas_auth_failed(struct wpa_supplicant *wpa_s, char *reason) 5084{ 5085 struct wpa_ssid *ssid = wpa_s->current_ssid; 5086 int dur; 5087 struct os_reltime now; 5088 5089 if (ssid == NULL) { 5090 wpa_printf(MSG_DEBUG, "Authentication failure but no known " 5091 "SSID block"); 5092 return; 5093 } 5094 5095 if (ssid->key_mgmt == WPA_KEY_MGMT_WPS) 5096 return; 5097 5098 ssid->auth_failures++; 5099 5100#ifdef CONFIG_P2P 5101 if (ssid->p2p_group && 5102 (wpa_s->p2p_in_provisioning || wpa_s->show_group_started)) { 5103 /* 5104 * Skip the wait time since there is a short timeout on the 5105 * connection to a P2P group. 5106 */ 5107 return; 5108 } 5109#endif /* CONFIG_P2P */ 5110 5111 if (ssid->auth_failures > 50) 5112 dur = 300; 5113 else if (ssid->auth_failures > 10) 5114 dur = 120; 5115 else if (ssid->auth_failures > 5) 5116 dur = 90; 5117 else if (ssid->auth_failures > 3) 5118 dur = 60; 5119 else if (ssid->auth_failures > 2) 5120 dur = 30; 5121 else if (ssid->auth_failures > 1) 5122 dur = 20; 5123 else 5124 dur = 10; 5125 5126 if (ssid->auth_failures > 1 && 5127 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) 5128 dur += os_random() % (ssid->auth_failures * 10); 5129 5130 os_get_reltime(&now); 5131 if (now.sec + dur <= ssid->disabled_until.sec) 5132 return; 5133 5134 ssid->disabled_until.sec = now.sec + dur; 5135 5136 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TEMP_DISABLED 5137 "id=%d ssid=\"%s\" auth_failures=%u duration=%d reason=%s", 5138 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 5139 ssid->auth_failures, dur, reason); 5140} 5141 5142 5143void wpas_clear_temp_disabled(struct wpa_supplicant *wpa_s, 5144 struct wpa_ssid *ssid, int clear_failures) 5145{ 5146 if (ssid == NULL) 5147 return; 5148 5149 if (ssid->disabled_until.sec) { 5150 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REENABLED 5151 "id=%d ssid=\"%s\"", 5152 ssid->id, wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 5153 } 5154 ssid->disabled_until.sec = 0; 5155 ssid->disabled_until.usec = 0; 5156 if (clear_failures) 5157 ssid->auth_failures = 0; 5158} 5159 5160 5161int disallowed_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid) 5162{ 5163 size_t i; 5164 5165 if (wpa_s->disallow_aps_bssid == NULL) 5166 return 0; 5167 5168 for (i = 0; i < wpa_s->disallow_aps_bssid_count; i++) { 5169 if (os_memcmp(wpa_s->disallow_aps_bssid + i * ETH_ALEN, 5170 bssid, ETH_ALEN) == 0) 5171 return 1; 5172 } 5173 5174 return 0; 5175} 5176 5177 5178int disallowed_ssid(struct wpa_supplicant *wpa_s, const u8 *ssid, 5179 size_t ssid_len) 5180{ 5181 size_t i; 5182 5183 if (wpa_s->disallow_aps_ssid == NULL || ssid == NULL) 5184 return 0; 5185 5186 for (i = 0; i < wpa_s->disallow_aps_ssid_count; i++) { 5187 struct wpa_ssid_value *s = &wpa_s->disallow_aps_ssid[i]; 5188 if (ssid_len == s->ssid_len && 5189 os_memcmp(ssid, s->ssid, ssid_len) == 0) 5190 return 1; 5191 } 5192 5193 return 0; 5194} 5195 5196 5197/** 5198 * wpas_request_connection - Request a new connection 5199 * @wpa_s: Pointer to the network interface 5200 * 5201 * This function is used to request a new connection to be found. It will mark 5202 * the interface to allow reassociation and request a new scan to find a 5203 * suitable network to connect to. 5204 */ 5205void wpas_request_connection(struct wpa_supplicant *wpa_s) 5206{ 5207 wpa_s->normal_scans = 0; 5208 wpa_s->scan_req = NORMAL_SCAN_REQ; 5209 wpa_supplicant_reinit_autoscan(wpa_s); 5210 wpa_s->extra_blacklist_count = 0; 5211 wpa_s->disconnected = 0; 5212 wpa_s->reassociate = 1; 5213 5214 if (wpa_supplicant_fast_associate(wpa_s) != 1) 5215 wpa_supplicant_req_scan(wpa_s, 0, 0); 5216 else 5217 wpa_s->reattach = 0; 5218} 5219 5220 5221void dump_freq_data(struct wpa_supplicant *wpa_s, const char *title, 5222 struct wpa_used_freq_data *freqs_data, 5223 unsigned int len) 5224{ 5225 unsigned int i; 5226 5227 wpa_dbg(wpa_s, MSG_DEBUG, "Shared frequencies (len=%u): %s", 5228 len, title); 5229 for (i = 0; i < len; i++) { 5230 struct wpa_used_freq_data *cur = &freqs_data[i]; 5231 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d, flags=0x%X", 5232 i, cur->freq, cur->flags); 5233 } 5234} 5235 5236 5237/* 5238 * Find the operating frequencies of any of the virtual interfaces that 5239 * are using the same radio as the current interface, and in addition, get 5240 * information about the interface types that are using the frequency. 5241 */ 5242int get_shared_radio_freqs_data(struct wpa_supplicant *wpa_s, 5243 struct wpa_used_freq_data *freqs_data, 5244 unsigned int len) 5245{ 5246 struct wpa_supplicant *ifs; 5247 u8 bssid[ETH_ALEN]; 5248 int freq; 5249 unsigned int idx = 0, i; 5250 5251 wpa_dbg(wpa_s, MSG_DEBUG, 5252 "Determining shared radio frequencies (max len %u)", len); 5253 os_memset(freqs_data, 0, sizeof(struct wpa_used_freq_data) * len); 5254 5255 dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant, 5256 radio_list) { 5257 if (idx == len) 5258 break; 5259 5260 if (ifs->current_ssid == NULL || ifs->assoc_freq == 0) 5261 continue; 5262 5263 if (ifs->current_ssid->mode == WPAS_MODE_AP || 5264 ifs->current_ssid->mode == WPAS_MODE_P2P_GO) 5265 freq = ifs->current_ssid->frequency; 5266 else if (wpa_drv_get_bssid(ifs, bssid) == 0) 5267 freq = ifs->assoc_freq; 5268 else 5269 continue; 5270 5271 /* Hold only distinct freqs */ 5272 for (i = 0; i < idx; i++) 5273 if (freqs_data[i].freq == freq) 5274 break; 5275 5276 if (i == idx) 5277 freqs_data[idx++].freq = freq; 5278 5279 if (ifs->current_ssid->mode == WPAS_MODE_INFRA) { 5280 freqs_data[i].flags = ifs->current_ssid->p2p_group ? 5281 WPA_FREQ_USED_BY_P2P_CLIENT : 5282 WPA_FREQ_USED_BY_INFRA_STATION; 5283 } 5284 } 5285 5286 dump_freq_data(wpa_s, "completed iteration", freqs_data, idx); 5287 return idx; 5288} 5289 5290 5291/* 5292 * Find the operating frequencies of any of the virtual interfaces that 5293 * are using the same radio as the current interface. 5294 */ 5295int get_shared_radio_freqs(struct wpa_supplicant *wpa_s, 5296 int *freq_array, unsigned int len) 5297{ 5298 struct wpa_used_freq_data *freqs_data; 5299 int num, i; 5300 5301 os_memset(freq_array, 0, sizeof(int) * len); 5302 5303 freqs_data = os_calloc(len, sizeof(struct wpa_used_freq_data)); 5304 if (!freqs_data) 5305 return -1; 5306 5307 num = get_shared_radio_freqs_data(wpa_s, freqs_data, len); 5308 for (i = 0; i < num; i++) 5309 freq_array[i] = freqs_data[i].freq; 5310 5311 os_free(freqs_data); 5312 5313 return num; 5314} 5315 5316 5317static void wpas_rrm_neighbor_rep_timeout_handler(void *data, void *user_ctx) 5318{ 5319 struct rrm_data *rrm = data; 5320 5321 if (!rrm->notify_neighbor_rep) { 5322 wpa_printf(MSG_ERROR, 5323 "RRM: Unexpected neighbor report timeout"); 5324 return; 5325 } 5326 5327 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report - NONE"); 5328 rrm->notify_neighbor_rep(rrm->neighbor_rep_cb_ctx, NULL); 5329 5330 rrm->notify_neighbor_rep = NULL; 5331 rrm->neighbor_rep_cb_ctx = NULL; 5332} 5333 5334 5335/* 5336 * wpas_rrm_reset - Clear and reset all RRM data in wpa_supplicant 5337 * @wpa_s: Pointer to wpa_supplicant 5338 */ 5339void wpas_rrm_reset(struct wpa_supplicant *wpa_s) 5340{ 5341 wpa_s->rrm.rrm_used = 0; 5342 5343 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm, 5344 NULL); 5345 if (wpa_s->rrm.notify_neighbor_rep) 5346 wpas_rrm_neighbor_rep_timeout_handler(&wpa_s->rrm, NULL); 5347 wpa_s->rrm.next_neighbor_rep_token = 1; 5348} 5349 5350 5351/* 5352 * wpas_rrm_process_neighbor_rep - Handle incoming neighbor report 5353 * @wpa_s: Pointer to wpa_supplicant 5354 * @report: Neighbor report buffer, prefixed by a 1-byte dialog token 5355 * @report_len: Length of neighbor report buffer 5356 */ 5357void wpas_rrm_process_neighbor_rep(struct wpa_supplicant *wpa_s, 5358 const u8 *report, size_t report_len) 5359{ 5360 struct wpabuf *neighbor_rep; 5361 5362 wpa_hexdump(MSG_DEBUG, "RRM: New Neighbor Report", report, report_len); 5363 if (report_len < 1) 5364 return; 5365 5366 if (report[0] != wpa_s->rrm.next_neighbor_rep_token - 1) { 5367 wpa_printf(MSG_DEBUG, 5368 "RRM: Discarding neighbor report with token %d (expected %d)", 5369 report[0], wpa_s->rrm.next_neighbor_rep_token - 1); 5370 return; 5371 } 5372 5373 eloop_cancel_timeout(wpas_rrm_neighbor_rep_timeout_handler, &wpa_s->rrm, 5374 NULL); 5375 5376 if (!wpa_s->rrm.notify_neighbor_rep) { 5377 wpa_printf(MSG_ERROR, "RRM: Unexpected neighbor report"); 5378 return; 5379 } 5380 5381 /* skipping the first byte, which is only an id (dialog token) */ 5382 neighbor_rep = wpabuf_alloc(report_len - 1); 5383 if (neighbor_rep == NULL) 5384 return; 5385 wpabuf_put_data(neighbor_rep, report + 1, report_len - 1); 5386 wpa_printf(MSG_DEBUG, "RRM: Notifying neighbor report (token = %d)", 5387 report[0]); 5388 wpa_s->rrm.notify_neighbor_rep(wpa_s->rrm.neighbor_rep_cb_ctx, 5389 neighbor_rep); 5390 wpa_s->rrm.notify_neighbor_rep = NULL; 5391 wpa_s->rrm.neighbor_rep_cb_ctx = NULL; 5392} 5393 5394 5395#if defined(__CYGWIN__) || defined(CONFIG_NATIVE_WINDOWS) 5396/* Workaround different, undefined for Windows, error codes used here */ 5397#define ENOTCONN -1 5398#define EOPNOTSUPP -1 5399#define ECANCELED -1 5400#endif 5401 5402/** 5403 * wpas_rrm_send_neighbor_rep_request - Request a neighbor report from our AP 5404 * @wpa_s: Pointer to wpa_supplicant 5405 * @ssid: if not null, this is sent in the request. Otherwise, no SSID IE 5406 * is sent in the request. 5407 * @cb: Callback function to be called once the requested report arrives, or 5408 * timed out after RRM_NEIGHBOR_REPORT_TIMEOUT seconds. 5409 * In the former case, 'neighbor_rep' is a newly allocated wpabuf, and it's 5410 * the requester's responsibility to free it. 5411 * In the latter case NULL will be sent in 'neighbor_rep'. 5412 * @cb_ctx: Context value to send the callback function 5413 * Returns: 0 in case of success, negative error code otherwise 5414 * 5415 * In case there is a previous request which has not been answered yet, the 5416 * new request fails. The caller may retry after RRM_NEIGHBOR_REPORT_TIMEOUT. 5417 * Request must contain a callback function. 5418 */ 5419int wpas_rrm_send_neighbor_rep_request(struct wpa_supplicant *wpa_s, 5420 const struct wpa_ssid *ssid, 5421 void (*cb)(void *ctx, 5422 struct wpabuf *neighbor_rep), 5423 void *cb_ctx) 5424{ 5425 struct wpabuf *buf; 5426 const u8 *rrm_ie; 5427 5428 if (wpa_s->wpa_state != WPA_COMPLETED || wpa_s->current_ssid == NULL) { 5429 wpa_printf(MSG_DEBUG, "RRM: No connection, no RRM."); 5430 return -ENOTCONN; 5431 } 5432 5433 if (!wpa_s->rrm.rrm_used) { 5434 wpa_printf(MSG_DEBUG, "RRM: No RRM in current connection."); 5435 return -EOPNOTSUPP; 5436 } 5437 5438 rrm_ie = wpa_bss_get_ie(wpa_s->current_bss, 5439 WLAN_EID_RRM_ENABLED_CAPABILITIES); 5440 if (!rrm_ie || !(wpa_s->current_bss->caps & IEEE80211_CAP_RRM) || 5441 !(rrm_ie[2] & WLAN_RRM_CAPS_NEIGHBOR_REPORT)) { 5442 wpa_printf(MSG_DEBUG, 5443 "RRM: No network support for Neighbor Report."); 5444 return -EOPNOTSUPP; 5445 } 5446 5447 if (!cb) { 5448 wpa_printf(MSG_DEBUG, 5449 "RRM: Neighbor Report request must provide a callback."); 5450 return -EINVAL; 5451 } 5452 5453 /* Refuse if there's a live request */ 5454 if (wpa_s->rrm.notify_neighbor_rep) { 5455 wpa_printf(MSG_DEBUG, 5456 "RRM: Currently handling previous Neighbor Report."); 5457 return -EBUSY; 5458 } 5459 5460 /* 3 = action category + action code + dialog token */ 5461 buf = wpabuf_alloc(3 + (ssid ? 2 + ssid->ssid_len : 0)); 5462 if (buf == NULL) { 5463 wpa_printf(MSG_DEBUG, 5464 "RRM: Failed to allocate Neighbor Report Request"); 5465 return -ENOMEM; 5466 } 5467 5468 wpa_printf(MSG_DEBUG, "RRM: Neighbor report request (for %s), token=%d", 5469 (ssid ? wpa_ssid_txt(ssid->ssid, ssid->ssid_len) : ""), 5470 wpa_s->rrm.next_neighbor_rep_token); 5471 5472 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); 5473 wpabuf_put_u8(buf, WLAN_RRM_NEIGHBOR_REPORT_REQUEST); 5474 wpabuf_put_u8(buf, wpa_s->rrm.next_neighbor_rep_token); 5475 if (ssid) { 5476 wpabuf_put_u8(buf, WLAN_EID_SSID); 5477 wpabuf_put_u8(buf, ssid->ssid_len); 5478 wpabuf_put_data(buf, ssid->ssid, ssid->ssid_len); 5479 } 5480 5481 wpa_s->rrm.next_neighbor_rep_token++; 5482 5483 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 5484 wpa_s->own_addr, wpa_s->bssid, 5485 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 5486 wpa_printf(MSG_DEBUG, 5487 "RRM: Failed to send Neighbor Report Request"); 5488 wpabuf_free(buf); 5489 return -ECANCELED; 5490 } 5491 5492 wpa_s->rrm.neighbor_rep_cb_ctx = cb_ctx; 5493 wpa_s->rrm.notify_neighbor_rep = cb; 5494 eloop_register_timeout(RRM_NEIGHBOR_REPORT_TIMEOUT, 0, 5495 wpas_rrm_neighbor_rep_timeout_handler, 5496 &wpa_s->rrm, NULL); 5497 5498 wpabuf_free(buf); 5499 return 0; 5500} 5501 5502 5503void wpas_rrm_handle_link_measurement_request(struct wpa_supplicant *wpa_s, 5504 const u8 *src, 5505 const u8 *frame, size_t len, 5506 int rssi) 5507{ 5508 struct wpabuf *buf; 5509 const struct rrm_link_measurement_request *req; 5510 struct rrm_link_measurement_report report; 5511 5512 if (wpa_s->wpa_state != WPA_COMPLETED) { 5513 wpa_printf(MSG_INFO, 5514 "RRM: Ignoring link measurement request. Not associated"); 5515 return; 5516 } 5517 5518 if (!wpa_s->rrm.rrm_used) { 5519 wpa_printf(MSG_INFO, 5520 "RRM: Ignoring link measurement request. Not RRM network"); 5521 return; 5522 } 5523 5524 if (!(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)) { 5525 wpa_printf(MSG_INFO, 5526 "RRM: Measurement report failed. TX power insertion not supported"); 5527 return; 5528 } 5529 5530 req = (const struct rrm_link_measurement_request *) frame; 5531 if (len < sizeof(*req)) { 5532 wpa_printf(MSG_INFO, 5533 "RRM: Link measurement report failed. Request too short"); 5534 return; 5535 } 5536 5537 os_memset(&report, 0, sizeof(report)); 5538 report.tpc.eid = WLAN_EID_TPC_REPORT; 5539 report.tpc.len = 2; 5540 report.rsni = 255; /* 255 indicates that RSNI is not available */ 5541 report.dialog_token = req->dialog_token; 5542 5543 /* 5544 * It's possible to estimate RCPI based on RSSI in dBm. This 5545 * calculation will not reflect the correct value for high rates, 5546 * but it's good enough for Action frames which are transmitted 5547 * with up to 24 Mbps rates. 5548 */ 5549 if (!rssi) 5550 report.rcpi = 255; /* not available */ 5551 else if (rssi < -110) 5552 report.rcpi = 0; 5553 else if (rssi > 0) 5554 report.rcpi = 220; 5555 else 5556 report.rcpi = (rssi + 110) * 2; 5557 5558 /* action_category + action_code */ 5559 buf = wpabuf_alloc(2 + sizeof(report)); 5560 if (buf == NULL) { 5561 wpa_printf(MSG_ERROR, 5562 "RRM: Link measurement report failed. Buffer allocation failed"); 5563 return; 5564 } 5565 5566 wpabuf_put_u8(buf, WLAN_ACTION_RADIO_MEASUREMENT); 5567 wpabuf_put_u8(buf, WLAN_RRM_LINK_MEASUREMENT_REPORT); 5568 wpabuf_put_data(buf, &report, sizeof(report)); 5569 wpa_hexdump(MSG_DEBUG, "RRM: Link measurement report:", 5570 wpabuf_head(buf), wpabuf_len(buf)); 5571 5572 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, src, 5573 wpa_s->own_addr, wpa_s->bssid, 5574 wpabuf_head(buf), wpabuf_len(buf), 0)) { 5575 wpa_printf(MSG_ERROR, 5576 "RRM: Link measurement report failed. Send action failed"); 5577 } 5578 wpabuf_free(buf); 5579} 5580