1/* 2 * WPA Supplicant 3 * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 * 14 * This file implements functions for registering and unregistering 15 * %wpa_supplicant interfaces. In addition, this file contains number of 16 * functions for managing network connections. 17 */ 18 19#include "includes.h" 20 21#include "common.h" 22#include "eapol_supp/eapol_supp_sm.h" 23#include "eap_peer/eap.h" 24#include "eap_server/eap_methods.h" 25#include "rsn_supp/wpa.h" 26#include "eloop.h" 27#include "config.h" 28#include "l2_packet/l2_packet.h" 29#include "wpa_supplicant_i.h" 30#include "driver_i.h" 31#include "ctrl_iface.h" 32#include "pcsc_funcs.h" 33#include "common/version.h" 34#include "rsn_supp/preauth.h" 35#include "rsn_supp/pmksa_cache.h" 36#include "common/wpa_ctrl.h" 37#include "mlme.h" 38#include "common/ieee802_11_defs.h" 39#include "blacklist.h" 40#include "wpas_glue.h" 41#include "wps_supplicant.h" 42#include "ibss_rsn.h" 43#include "sme.h" 44#include "ap.h" 45#include "notify.h" 46#include "bgscan.h" 47#include "bss.h" 48#include "scan.h" 49 50const char *wpa_supplicant_version = 51"wpa_supplicant v" VERSION_STR "\n" 52"Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi> and contributors"; 53 54const char *wpa_supplicant_license = 55"This program is free software. You can distribute it and/or modify it\n" 56"under the terms of the GNU General Public License version 2.\n" 57"\n" 58"Alternatively, this software may be distributed under the terms of the\n" 59"BSD license. See README and COPYING for more details.\n" 60#ifdef EAP_TLS_OPENSSL 61"\nThis product includes software developed by the OpenSSL Project\n" 62"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n" 63#endif /* EAP_TLS_OPENSSL */ 64; 65 66#ifndef CONFIG_NO_STDOUT_DEBUG 67/* Long text divided into parts in order to fit in C89 strings size limits. */ 68const char *wpa_supplicant_full_license1 = 69"This program is free software; you can redistribute it and/or modify\n" 70"it under the terms of the GNU General Public License version 2 as\n" 71"published by the Free Software Foundation.\n" 72"\n" 73"This program is distributed in the hope that it will be useful,\n" 74"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" 75"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" 76"GNU General Public License for more details.\n" 77"\n"; 78const char *wpa_supplicant_full_license2 = 79"You should have received a copy of the GNU General Public License\n" 80"along with this program; if not, write to the Free Software\n" 81"Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n" 82"\n" 83"Alternatively, this software may be distributed under the terms of the\n" 84"BSD license.\n" 85"\n" 86"Redistribution and use in source and binary forms, with or without\n" 87"modification, are permitted provided that the following conditions are\n" 88"met:\n" 89"\n"; 90const char *wpa_supplicant_full_license3 = 91"1. Redistributions of source code must retain the above copyright\n" 92" notice, this list of conditions and the following disclaimer.\n" 93"\n" 94"2. Redistributions in binary form must reproduce the above copyright\n" 95" notice, this list of conditions and the following disclaimer in the\n" 96" documentation and/or other materials provided with the distribution.\n" 97"\n"; 98const char *wpa_supplicant_full_license4 = 99"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n" 100" names of its contributors may be used to endorse or promote products\n" 101" derived from this software without specific prior written permission.\n" 102"\n" 103"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n" 104"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n" 105"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n" 106"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n"; 107const char *wpa_supplicant_full_license5 = 108"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n" 109"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n" 110"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n" 111"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n" 112"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n" 113"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n" 114"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n" 115"\n"; 116#endif /* CONFIG_NO_STDOUT_DEBUG */ 117 118extern int wpa_debug_level; 119extern int wpa_debug_show_keys; 120extern int wpa_debug_timestamp; 121extern struct wpa_driver_ops *wpa_drivers[]; 122 123/* Configure default/group WEP keys for static WEP */ 124int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid) 125{ 126 int i, set = 0; 127 128 for (i = 0; i < NUM_WEP_KEYS; i++) { 129 if (ssid->wep_key_len[i] == 0) 130 continue; 131 132 set = 1; 133 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, 134 (u8 *) "\xff\xff\xff\xff\xff\xff", 135 i, i == ssid->wep_tx_keyidx, (u8 *) "", 0, 136 ssid->wep_key[i], ssid->wep_key_len[i]); 137 } 138 139 return set; 140} 141 142 143static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s, 144 struct wpa_ssid *ssid) 145{ 146 u8 key[32]; 147 size_t keylen; 148 enum wpa_alg alg; 149 u8 seq[6] = { 0 }; 150 151 /* IBSS/WPA-None uses only one key (Group) for both receiving and 152 * sending unicast and multicast packets. */ 153 154 if (ssid->mode != WPAS_MODE_IBSS) { 155 wpa_printf(MSG_INFO, "WPA: Invalid mode %d (not IBSS/ad-hoc) " 156 "for WPA-None", ssid->mode); 157 return -1; 158 } 159 160 if (!ssid->psk_set) { 161 wpa_printf(MSG_INFO, "WPA: No PSK configured for WPA-None"); 162 return -1; 163 } 164 165 switch (wpa_s->group_cipher) { 166 case WPA_CIPHER_CCMP: 167 os_memcpy(key, ssid->psk, 16); 168 keylen = 16; 169 alg = WPA_ALG_CCMP; 170 break; 171 case WPA_CIPHER_TKIP: 172 /* WPA-None uses the same Michael MIC key for both TX and RX */ 173 os_memcpy(key, ssid->psk, 16 + 8); 174 os_memcpy(key + 16 + 8, ssid->psk + 16, 8); 175 keylen = 32; 176 alg = WPA_ALG_TKIP; 177 break; 178 default: 179 wpa_printf(MSG_INFO, "WPA: Invalid group cipher %d for " 180 "WPA-None", wpa_s->group_cipher); 181 return -1; 182 } 183 184 /* TODO: should actually remember the previously used seq#, both for TX 185 * and RX from each STA.. */ 186 187 return wpa_drv_set_key(wpa_s, alg, (u8 *) "\xff\xff\xff\xff\xff\xff", 188 0, 1, seq, 6, key, keylen); 189} 190 191 192static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx) 193{ 194 struct wpa_supplicant *wpa_s = eloop_ctx; 195 const u8 *bssid = wpa_s->bssid; 196 if (is_zero_ether_addr(bssid)) 197 bssid = wpa_s->pending_bssid; 198 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.", 199 MAC2STR(bssid)); 200 wpa_blacklist_add(wpa_s, bssid); 201 wpa_sm_notify_disassoc(wpa_s->wpa); 202 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING); 203 wpa_s->reassociate = 1; 204 wpa_supplicant_req_scan(wpa_s, 0, 0); 205} 206 207 208/** 209 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication 210 * @wpa_s: Pointer to wpa_supplicant data 211 * @sec: Number of seconds after which to time out authentication 212 * @usec: Number of microseconds after which to time out authentication 213 * 214 * This function is used to schedule a timeout for the current authentication 215 * attempt. 216 */ 217void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s, 218 int sec, int usec) 219{ 220 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 && 221 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 222 return; 223 224 wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec " 225 "%d usec", sec, usec); 226 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 227 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL); 228} 229 230 231/** 232 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout 233 * @wpa_s: Pointer to wpa_supplicant data 234 * 235 * This function is used to cancel authentication timeout scheduled with 236 * wpa_supplicant_req_auth_timeout() and it is called when authentication has 237 * been completed. 238 */ 239void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s) 240{ 241 wpa_msg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout"); 242 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 243 wpa_blacklist_del(wpa_s, wpa_s->bssid); 244} 245 246 247/** 248 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine 249 * @wpa_s: Pointer to wpa_supplicant data 250 * 251 * This function is used to configure EAPOL state machine based on the selected 252 * authentication mode. 253 */ 254void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s) 255{ 256#ifdef IEEE8021X_EAPOL 257 struct eapol_config eapol_conf; 258 struct wpa_ssid *ssid = wpa_s->current_ssid; 259 260#ifdef CONFIG_IBSS_RSN 261 if (ssid->mode == WPAS_MODE_IBSS && 262 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 263 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 264 /* 265 * RSN IBSS authentication is per-STA and we can disable the 266 * per-BSSID EAPOL authentication. 267 */ 268 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 269 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); 270 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 271 return; 272 } 273#endif /* CONFIG_IBSS_RSN */ 274 275 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 276 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE); 277 278 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 279 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) 280 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized); 281 else 282 eapol_sm_notify_portControl(wpa_s->eapol, Auto); 283 284 os_memset(&eapol_conf, 0, sizeof(eapol_conf)); 285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 286 eapol_conf.accept_802_1x_keys = 1; 287 eapol_conf.required_keys = 0; 288 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) { 289 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST; 290 } 291 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) { 292 eapol_conf.required_keys |= 293 EAPOL_REQUIRE_KEY_BROADCAST; 294 } 295 296 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) 297 eapol_conf.required_keys = 0; 298 } 299 if (wpa_s->conf) 300 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth; 301 eapol_conf.workaround = ssid->eap_workaround; 302 eapol_conf.eap_disabled = 303 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) && 304 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA && 305 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS; 306 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf); 307#endif /* IEEE8021X_EAPOL */ 308} 309 310 311/** 312 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode 313 * @wpa_s: Pointer to wpa_supplicant data 314 * @ssid: Configuration data for the network 315 * 316 * This function is used to configure WPA state machine and related parameters 317 * to a mode where WPA is not enabled. This is called as part of the 318 * authentication configuration when the selected network does not use WPA. 319 */ 320void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s, 321 struct wpa_ssid *ssid) 322{ 323 int i; 324 325 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) 326 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS; 327 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) 328 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA; 329 else 330 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE; 331 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); 332 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); 333 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 334 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 335 wpa_s->group_cipher = WPA_CIPHER_NONE; 336 wpa_s->mgmt_group_cipher = 0; 337 338 for (i = 0; i < NUM_WEP_KEYS; i++) { 339 if (ssid->wep_key_len[i] > 5) { 340 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104; 341 wpa_s->group_cipher = WPA_CIPHER_WEP104; 342 break; 343 } else if (ssid->wep_key_len[i] > 0) { 344 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40; 345 wpa_s->group_cipher = WPA_CIPHER_WEP40; 346 break; 347 } 348 } 349 350 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0); 351 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 352 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 353 wpa_s->pairwise_cipher); 354 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 355#ifdef CONFIG_IEEE80211W 356 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 357 wpa_s->mgmt_group_cipher); 358#endif /* CONFIG_IEEE80211W */ 359 360 pmksa_cache_clear_current(wpa_s->wpa); 361} 362 363 364static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s) 365{ 366 bgscan_deinit(wpa_s); 367 scard_deinit(wpa_s->scard); 368 wpa_s->scard = NULL; 369 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL); 370 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL); 371 l2_packet_deinit(wpa_s->l2); 372 wpa_s->l2 = NULL; 373 if (wpa_s->l2_br) { 374 l2_packet_deinit(wpa_s->l2_br); 375 wpa_s->l2_br = NULL; 376 } 377 378 if (wpa_s->ctrl_iface) { 379 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 380 wpa_s->ctrl_iface = NULL; 381 } 382 if (wpa_s->conf != NULL) { 383 struct wpa_ssid *ssid; 384 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 385 wpas_notify_network_removed(wpa_s, ssid); 386 wpa_config_free(wpa_s->conf); 387 wpa_s->conf = NULL; 388 } 389 390 os_free(wpa_s->confname); 391 wpa_s->confname = NULL; 392 393 wpa_sm_set_eapol(wpa_s->wpa, NULL); 394 eapol_sm_deinit(wpa_s->eapol); 395 wpa_s->eapol = NULL; 396 397 rsn_preauth_deinit(wpa_s->wpa); 398 399 pmksa_candidate_free(wpa_s->wpa); 400 wpa_sm_deinit(wpa_s->wpa); 401 wpa_s->wpa = NULL; 402 wpa_blacklist_clear(wpa_s); 403 404 wpa_bss_deinit(wpa_s); 405 406 wpa_supplicant_cancel_scan(wpa_s); 407 wpa_supplicant_cancel_auth_timeout(wpa_s); 408 409 ieee80211_sta_deinit(wpa_s); 410 411 wpas_wps_deinit(wpa_s); 412 413 wpabuf_free(wpa_s->pending_eapol_rx); 414 wpa_s->pending_eapol_rx = NULL; 415 416#ifdef CONFIG_IBSS_RSN 417 ibss_rsn_deinit(wpa_s->ibss_rsn); 418 wpa_s->ibss_rsn = NULL; 419#endif /* CONFIG_IBSS_RSN */ 420 421#ifdef CONFIG_SME 422 os_free(wpa_s->sme.ft_ies); 423 wpa_s->sme.ft_ies = NULL; 424 wpa_s->sme.ft_ies_len = 0; 425#endif /* CONFIG_SME */ 426 427#ifdef CONFIG_AP 428 wpa_supplicant_ap_deinit(wpa_s); 429#endif /* CONFIG_AP */ 430} 431 432 433/** 434 * wpa_clear_keys - Clear keys configured for the driver 435 * @wpa_s: Pointer to wpa_supplicant data 436 * @addr: Previously used BSSID or %NULL if not available 437 * 438 * This function clears the encryption keys that has been previously configured 439 * for the driver. 440 */ 441void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr) 442{ 443 u8 *bcast = (u8 *) "\xff\xff\xff\xff\xff\xff"; 444 445 if (wpa_s->keys_cleared) { 446 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have 447 * timing issues with keys being cleared just before new keys 448 * are set or just after association or something similar. This 449 * shows up in group key handshake failing often because of the 450 * client not receiving the first encrypted packets correctly. 451 * Skipping some of the extra key clearing steps seems to help 452 * in completing group key handshake more reliably. */ 453 wpa_printf(MSG_DEBUG, "No keys have been configured - " 454 "skip key clearing"); 455 return; 456 } 457 458 /* MLME-DELETEKEYS.request */ 459 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 0, 0, NULL, 0, NULL, 0); 460 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 1, 0, NULL, 0, NULL, 0); 461 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 2, 0, NULL, 0, NULL, 0); 462 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 3, 0, NULL, 0, NULL, 0); 463#ifdef CONFIG_IEEE80211W 464 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 4, 0, NULL, 0, NULL, 0); 465 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, bcast, 5, 0, NULL, 0, NULL, 0); 466#endif /* CONFIG_IEEE80211W */ 467 if (addr) { 468 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL, 469 0); 470 /* MLME-SETPROTECTION.request(None) */ 471 wpa_drv_mlme_setprotection( 472 wpa_s, addr, 473 MLME_SETPROTECTION_PROTECT_TYPE_NONE, 474 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); 475 } 476 wpa_s->keys_cleared = 1; 477} 478 479 480/** 481 * wpa_supplicant_state_txt - Get the connection state name as a text string 482 * @state: State (wpa_state; WPA_*) 483 * Returns: The state name as a printable text string 484 */ 485const char * wpa_supplicant_state_txt(enum wpa_states state) 486{ 487 switch (state) { 488 case WPA_DISCONNECTED: 489 return "DISCONNECTED"; 490 case WPA_INACTIVE: 491 return "INACTIVE"; 492 case WPA_SCANNING: 493 return "SCANNING"; 494 case WPA_AUTHENTICATING: 495 return "AUTHENTICATING"; 496 case WPA_ASSOCIATING: 497 return "ASSOCIATING"; 498 case WPA_ASSOCIATED: 499 return "ASSOCIATED"; 500 case WPA_4WAY_HANDSHAKE: 501 return "4WAY_HANDSHAKE"; 502 case WPA_GROUP_HANDSHAKE: 503 return "GROUP_HANDSHAKE"; 504 case WPA_COMPLETED: 505 return "COMPLETED"; 506 default: 507 return "UNKNOWN"; 508 } 509} 510 511 512/** 513 * wpa_supplicant_set_state - Set current connection state 514 * @wpa_s: Pointer to wpa_supplicant data 515 * @state: The new connection state 516 * 517 * This function is called whenever the connection state changes, e.g., 518 * association is completed for WPA/WPA2 4-Way Handshake is started. 519 */ 520void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s, 521 enum wpa_states state) 522{ 523 enum wpa_states old_state = wpa_s->wpa_state; 524 525 wpa_printf(MSG_DEBUG, "State: %s -> %s", 526 wpa_supplicant_state_txt(wpa_s->wpa_state), 527 wpa_supplicant_state_txt(state)); 528 529 if (state != WPA_SCANNING) 530 wpa_supplicant_notify_scanning(wpa_s, 0); 531 532 if (state == WPA_COMPLETED && wpa_s->new_connection) { 533#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 534 struct wpa_ssid *ssid = wpa_s->current_ssid; 535 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to " 536 MACSTR " completed %s [id=%d id_str=%s]", 537 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ? 538 "(reauth)" : "(auth)", 539 ssid ? ssid->id : -1, 540 ssid && ssid->id_str ? ssid->id_str : ""); 541#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 542 wpa_s->new_connection = 0; 543 wpa_s->reassociated_connection = 1; 544 wpa_drv_set_operstate(wpa_s, 1); 545 wpa_s->after_wps = 0; 546 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING || 547 state == WPA_ASSOCIATED) { 548 wpa_s->new_connection = 1; 549 wpa_drv_set_operstate(wpa_s, 0); 550 } 551 wpa_s->wpa_state = state; 552 553 if (wpa_s->wpa_state != old_state) 554 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 555} 556 557 558void wpa_supplicant_terminate_proc(struct wpa_global *global) 559{ 560 int pending = 0; 561#ifdef CONFIG_WPS 562 struct wpa_supplicant *wpa_s = global->ifaces; 563 while (wpa_s) { 564 if (wpas_wps_terminate_pending(wpa_s) == 1) 565 pending = 1; 566 wpa_s = wpa_s->next; 567 } 568#endif /* CONFIG_WPS */ 569 if (pending) 570 return; 571 eloop_terminate(); 572} 573 574 575static void wpa_supplicant_terminate(int sig, void *signal_ctx) 576{ 577 struct wpa_global *global = signal_ctx; 578 struct wpa_supplicant *wpa_s; 579 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 580 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d " 581 "received", sig); 582 } 583 wpa_supplicant_terminate_proc(global); 584} 585 586 587static void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s) 588{ 589 enum wpa_states old_state = wpa_s->wpa_state; 590 591 wpa_s->pairwise_cipher = 0; 592 wpa_s->group_cipher = 0; 593 wpa_s->mgmt_group_cipher = 0; 594 wpa_s->key_mgmt = 0; 595 wpa_s->wpa_state = WPA_DISCONNECTED; 596 597 if (wpa_s->wpa_state != old_state) 598 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state); 599} 600 601 602/** 603 * wpa_supplicant_reload_configuration - Reload configuration data 604 * @wpa_s: Pointer to wpa_supplicant data 605 * Returns: 0 on success or -1 if configuration parsing failed 606 * 607 * This function can be used to request that the configuration data is reloaded 608 * (e.g., after configuration file change). This function is reloading 609 * configuration only for one interface, so this may need to be called multiple 610 * times if %wpa_supplicant is controlling multiple interfaces and all 611 * interfaces need reconfiguration. 612 */ 613int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s) 614{ 615 struct wpa_config *conf; 616 struct wpa_ssid *old_ssid; 617 int reconf_ctrl; 618 int old_ap_scan; 619 620 if (wpa_s->confname == NULL) 621 return -1; 622 conf = wpa_config_read(wpa_s->confname); 623 if (conf == NULL) { 624 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration " 625 "file '%s' - exiting", wpa_s->confname); 626 return -1; 627 } 628 629 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface 630 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface && 631 os_strcmp(conf->ctrl_interface, 632 wpa_s->conf->ctrl_interface) != 0); 633 634 if (reconf_ctrl && wpa_s->ctrl_iface) { 635 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface); 636 wpa_s->ctrl_iface = NULL; 637 } 638 639 eapol_sm_invalidate_cached_session(wpa_s->eapol); 640 old_ssid = wpa_s->current_ssid; 641 wpa_s->current_ssid = NULL; 642 if (old_ssid != wpa_s->current_ssid) 643 wpas_notify_network_changed(wpa_s); 644 645 /* 646 * TODO: should notify EAPOL SM about changes in opensc_engine_path, 647 * pkcs11_engine_path, pkcs11_module_path. 648 */ 649 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { 650 /* 651 * Clear forced success to clear EAP state for next 652 * authentication. 653 */ 654 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); 655 } 656 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 657 wpa_sm_set_config(wpa_s->wpa, NULL); 658 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 659 rsn_preauth_deinit(wpa_s->wpa); 660 661 old_ap_scan = wpa_s->conf->ap_scan; 662 wpa_config_free(wpa_s->conf); 663 wpa_s->conf = conf; 664 if (old_ap_scan != wpa_s->conf->ap_scan) 665 wpas_notify_ap_scan_changed(wpa_s); 666 667 if (reconf_ctrl) 668 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 669 670 wpa_supplicant_clear_status(wpa_s); 671 wpa_s->reassociate = 1; 672 wpa_supplicant_req_scan(wpa_s, 0, 0); 673 wpa_msg(wpa_s, MSG_DEBUG, "Reconfiguration completed"); 674 return 0; 675} 676 677 678static void wpa_supplicant_reconfig(int sig, void *signal_ctx) 679{ 680 struct wpa_global *global = signal_ctx; 681 struct wpa_supplicant *wpa_s; 682 wpa_printf(MSG_DEBUG, "Signal %d received - reconfiguring", sig); 683 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 684 if (wpa_supplicant_reload_configuration(wpa_s) < 0) { 685 wpa_supplicant_terminate_proc(global); 686 } 687 } 688} 689 690 691enum wpa_cipher cipher_suite2driver(int cipher) 692{ 693 switch (cipher) { 694 case WPA_CIPHER_NONE: 695 return CIPHER_NONE; 696 case WPA_CIPHER_WEP40: 697 return CIPHER_WEP40; 698 case WPA_CIPHER_WEP104: 699 return CIPHER_WEP104; 700 case WPA_CIPHER_CCMP: 701 return CIPHER_CCMP; 702 case WPA_CIPHER_TKIP: 703 default: 704 return CIPHER_TKIP; 705 } 706} 707 708 709enum wpa_key_mgmt key_mgmt2driver(int key_mgmt) 710{ 711 switch (key_mgmt) { 712 case WPA_KEY_MGMT_NONE: 713 return KEY_MGMT_NONE; 714 case WPA_KEY_MGMT_IEEE8021X_NO_WPA: 715 return KEY_MGMT_802_1X_NO_WPA; 716 case WPA_KEY_MGMT_IEEE8021X: 717 return KEY_MGMT_802_1X; 718 case WPA_KEY_MGMT_WPA_NONE: 719 return KEY_MGMT_WPA_NONE; 720 case WPA_KEY_MGMT_FT_IEEE8021X: 721 return KEY_MGMT_FT_802_1X; 722 case WPA_KEY_MGMT_FT_PSK: 723 return KEY_MGMT_FT_PSK; 724 case WPA_KEY_MGMT_IEEE8021X_SHA256: 725 return KEY_MGMT_802_1X_SHA256; 726 case WPA_KEY_MGMT_PSK_SHA256: 727 return KEY_MGMT_PSK_SHA256; 728 case WPA_KEY_MGMT_WPS: 729 return KEY_MGMT_WPS; 730 case WPA_KEY_MGMT_PSK: 731 default: 732 return KEY_MGMT_PSK; 733 } 734} 735 736 737static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s, 738 struct wpa_ssid *ssid, 739 struct wpa_ie_data *ie) 740{ 741 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie); 742 if (ret) { 743 if (ret == -2) { 744 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE " 745 "from association info"); 746 } 747 return -1; 748 } 749 750 wpa_printf(MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set cipher " 751 "suites"); 752 if (!(ie->group_cipher & ssid->group_cipher)) { 753 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group " 754 "cipher 0x%x (mask 0x%x) - reject", 755 ie->group_cipher, ssid->group_cipher); 756 return -1; 757 } 758 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) { 759 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise " 760 "cipher 0x%x (mask 0x%x) - reject", 761 ie->pairwise_cipher, ssid->pairwise_cipher); 762 return -1; 763 } 764 if (!(ie->key_mgmt & ssid->key_mgmt)) { 765 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key " 766 "management 0x%x (mask 0x%x) - reject", 767 ie->key_mgmt, ssid->key_mgmt); 768 return -1; 769 } 770 771#ifdef CONFIG_IEEE80211W 772 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) && 773 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) { 774 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP " 775 "that does not support management frame protection - " 776 "reject"); 777 return -1; 778 } 779#endif /* CONFIG_IEEE80211W */ 780 781 return 0; 782} 783 784 785/** 786 * wpa_supplicant_set_suites - Set authentication and encryption parameters 787 * @wpa_s: Pointer to wpa_supplicant data 788 * @bss: Scan results for the selected BSS, or %NULL if not available 789 * @ssid: Configuration data for the selected network 790 * @wpa_ie: Buffer for the WPA/RSN IE 791 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the 792 * used buffer length in case the functions returns success. 793 * Returns: 0 on success or -1 on failure 794 * 795 * This function is used to configure authentication and encryption parameters 796 * based on the network configuration and scan result for the selected BSS (if 797 * available). 798 */ 799int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s, 800 struct wpa_bss *bss, struct wpa_ssid *ssid, 801 u8 *wpa_ie, size_t *wpa_ie_len) 802{ 803 struct wpa_ie_data ie; 804 int sel, proto; 805 const u8 *bss_wpa, *bss_rsn; 806 807 if (bss) { 808 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); 809 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 810 } else 811 bss_wpa = bss_rsn = NULL; 812 813 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) && 814 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 && 815 (ie.group_cipher & ssid->group_cipher) && 816 (ie.pairwise_cipher & ssid->pairwise_cipher) && 817 (ie.key_mgmt & ssid->key_mgmt)) { 818 wpa_msg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0"); 819 proto = WPA_PROTO_RSN; 820 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) && 821 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 && 822 (ie.group_cipher & ssid->group_cipher) && 823 (ie.pairwise_cipher & ssid->pairwise_cipher) && 824 (ie.key_mgmt & ssid->key_mgmt)) { 825 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0"); 826 proto = WPA_PROTO_WPA; 827 } else if (bss) { 828 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN"); 829 return -1; 830 } else { 831 if (ssid->proto & WPA_PROTO_RSN) 832 proto = WPA_PROTO_RSN; 833 else 834 proto = WPA_PROTO_WPA; 835 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) { 836 os_memset(&ie, 0, sizeof(ie)); 837 ie.group_cipher = ssid->group_cipher; 838 ie.pairwise_cipher = ssid->pairwise_cipher; 839 ie.key_mgmt = ssid->key_mgmt; 840#ifdef CONFIG_IEEE80211W 841 ie.mgmt_group_cipher = 842 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ? 843 WPA_CIPHER_AES_128_CMAC : 0; 844#endif /* CONFIG_IEEE80211W */ 845 wpa_printf(MSG_DEBUG, "WPA: Set cipher suites based " 846 "on configuration"); 847 } else 848 proto = ie.proto; 849 } 850 851 wpa_printf(MSG_DEBUG, "WPA: Selected cipher suites: group %d " 852 "pairwise %d key_mgmt %d proto %d", 853 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto); 854#ifdef CONFIG_IEEE80211W 855 if (ssid->ieee80211w) { 856 wpa_printf(MSG_DEBUG, "WPA: Selected mgmt group cipher %d", 857 ie.mgmt_group_cipher); 858 } 859#endif /* CONFIG_IEEE80211W */ 860 861 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto); 862 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 863 !!(ssid->proto & WPA_PROTO_RSN)); 864 865 if (bss || !wpa_s->ap_ies_from_associnfo) { 866 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa, 867 bss_wpa ? 2 + bss_wpa[1] : 0) || 868 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn, 869 bss_rsn ? 2 + bss_rsn[1] : 0)) 870 return -1; 871 } 872 873 sel = ie.group_cipher & ssid->group_cipher; 874 if (sel & WPA_CIPHER_CCMP) { 875 wpa_s->group_cipher = WPA_CIPHER_CCMP; 876 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP"); 877 } else if (sel & WPA_CIPHER_TKIP) { 878 wpa_s->group_cipher = WPA_CIPHER_TKIP; 879 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP"); 880 } else if (sel & WPA_CIPHER_WEP104) { 881 wpa_s->group_cipher = WPA_CIPHER_WEP104; 882 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104"); 883 } else if (sel & WPA_CIPHER_WEP40) { 884 wpa_s->group_cipher = WPA_CIPHER_WEP40; 885 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40"); 886 } else { 887 wpa_printf(MSG_WARNING, "WPA: Failed to select group cipher."); 888 return -1; 889 } 890 891 sel = ie.pairwise_cipher & ssid->pairwise_cipher; 892 if (sel & WPA_CIPHER_CCMP) { 893 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP; 894 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP"); 895 } else if (sel & WPA_CIPHER_TKIP) { 896 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP; 897 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP"); 898 } else if (sel & WPA_CIPHER_NONE) { 899 wpa_s->pairwise_cipher = WPA_CIPHER_NONE; 900 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE"); 901 } else { 902 wpa_printf(MSG_WARNING, "WPA: Failed to select pairwise " 903 "cipher."); 904 return -1; 905 } 906 907 sel = ie.key_mgmt & ssid->key_mgmt; 908 if (0) { 909#ifdef CONFIG_IEEE80211R 910 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) { 911 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; 912 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X"); 913 } else if (sel & WPA_KEY_MGMT_FT_PSK) { 914 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK; 915 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK"); 916#endif /* CONFIG_IEEE80211R */ 917#ifdef CONFIG_IEEE80211W 918 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) { 919 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; 920 wpa_msg(wpa_s, MSG_DEBUG, 921 "WPA: using KEY_MGMT 802.1X with SHA256"); 922 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) { 923 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256; 924 wpa_msg(wpa_s, MSG_DEBUG, 925 "WPA: using KEY_MGMT PSK with SHA256"); 926#endif /* CONFIG_IEEE80211W */ 927 } else if (sel & WPA_KEY_MGMT_IEEE8021X) { 928 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X; 929 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X"); 930 } else if (sel & WPA_KEY_MGMT_PSK) { 931 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK; 932 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK"); 933 } else if (sel & WPA_KEY_MGMT_WPA_NONE) { 934 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE; 935 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE"); 936 } else { 937 wpa_printf(MSG_WARNING, "WPA: Failed to select authenticated " 938 "key management type."); 939 return -1; 940 } 941 942 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt); 943 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE, 944 wpa_s->pairwise_cipher); 945 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher); 946 947#ifdef CONFIG_IEEE80211W 948 sel = ie.mgmt_group_cipher; 949 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION || 950 !(ie.capabilities & WPA_CAPABILITY_MFPC)) 951 sel = 0; 952 if (sel & WPA_CIPHER_AES_128_CMAC) { 953 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC; 954 wpa_msg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher " 955 "AES-128-CMAC"); 956 } else { 957 wpa_s->mgmt_group_cipher = 0; 958 wpa_msg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher"); 959 } 960 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP, 961 wpa_s->mgmt_group_cipher); 962 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w); 963#endif /* CONFIG_IEEE80211W */ 964 965 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) { 966 wpa_printf(MSG_WARNING, "WPA: Failed to generate WPA IE."); 967 return -1; 968 } 969 970 if (ssid->key_mgmt & 971 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256)) 972 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN); 973 else 974 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa); 975 976 return 0; 977} 978 979 980/** 981 * wpa_supplicant_associate - Request association 982 * @wpa_s: Pointer to wpa_supplicant data 983 * @bss: Scan results for the selected BSS, or %NULL if not available 984 * @ssid: Configuration data for the selected network 985 * 986 * This function is used to request %wpa_supplicant to associate with a BSS. 987 */ 988void wpa_supplicant_associate(struct wpa_supplicant *wpa_s, 989 struct wpa_bss *bss, struct wpa_ssid *ssid) 990{ 991 u8 wpa_ie[80]; 992 size_t wpa_ie_len; 993 int use_crypt, ret, i, bssid_changed; 994 int algs = WPA_AUTH_ALG_OPEN; 995 enum wpa_cipher cipher_pairwise, cipher_group; 996 struct wpa_driver_associate_params params; 997 int wep_keys_set = 0; 998 struct wpa_driver_capa capa; 999 int assoc_failed = 0; 1000 struct wpa_ssid *old_ssid; 1001 1002 if (ssid->mode == WPAS_MODE_AP) { 1003#ifdef CONFIG_AP 1004 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) { 1005 wpa_printf(MSG_INFO, "Driver does not support AP " 1006 "mode"); 1007 return; 1008 } 1009 wpa_supplicant_create_ap(wpa_s, ssid); 1010 wpa_s->current_bss = bss; 1011#else /* CONFIG_AP */ 1012 wpa_printf(MSG_ERROR, "AP mode support not included in the " 1013 "build"); 1014#endif /* CONFIG_AP */ 1015 return; 1016 } 1017 1018 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) && 1019 ssid->mode == IEEE80211_MODE_INFRA) { 1020 sme_authenticate(wpa_s, bss, ssid); 1021 return; 1022 } 1023 1024 wpa_s->reassociate = 0; 1025 if (bss) { 1026#ifdef CONFIG_IEEE80211R 1027 const u8 *ie, *md = NULL; 1028#endif /* CONFIG_IEEE80211R */ 1029 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 1030 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid), 1031 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq); 1032 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1033 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1034 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 1035 if (bssid_changed) 1036 wpas_notify_bssid_changed(wpa_s); 1037#ifdef CONFIG_IEEE80211R 1038 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 1039 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 1040 md = ie + 2; 1041 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 1042 if (md) { 1043 /* Prepare for the next transition */ 1044 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 1045 } 1046#endif /* CONFIG_IEEE80211R */ 1047#ifdef CONFIG_WPS 1048 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) && 1049 wpa_s->conf->ap_scan == 2 && 1050 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { 1051 /* Use ap_scan==1 style network selection to find the network 1052 */ 1053 wpa_s->scan_req = 2; 1054 wpa_s->reassociate = 1; 1055 wpa_supplicant_req_scan(wpa_s, 0, 0); 1056 return; 1057#endif /* CONFIG_WPS */ 1058 } else { 1059 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'", 1060 wpa_ssid_txt(ssid->ssid, ssid->ssid_len)); 1061 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1062 } 1063 wpa_supplicant_cancel_scan(wpa_s); 1064 1065 /* Starting new association, so clear the possibly used WPA IE from the 1066 * previous association. */ 1067 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1068 1069#ifdef IEEE8021X_EAPOL 1070 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1071 if (ssid->leap) { 1072 if (ssid->non_leap == 0) 1073 algs = WPA_AUTH_ALG_LEAP; 1074 else 1075 algs |= WPA_AUTH_ALG_LEAP; 1076 } 1077 } 1078#endif /* IEEE8021X_EAPOL */ 1079 wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs); 1080 if (ssid->auth_alg) { 1081 algs = ssid->auth_alg; 1082 wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x", 1083 algs); 1084 } 1085 1086 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 1087 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 1088 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK | 1089 WPA_KEY_MGMT_FT_IEEE8021X | 1090 WPA_KEY_MGMT_FT_PSK | 1091 WPA_KEY_MGMT_IEEE8021X_SHA256 | 1092 WPA_KEY_MGMT_PSK_SHA256))) { 1093 int try_opportunistic; 1094 try_opportunistic = ssid->proactive_key_caching && 1095 (ssid->proto & WPA_PROTO_RSN); 1096 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 1097 wpa_s->current_ssid, 1098 try_opportunistic) == 0) 1099 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); 1100 wpa_ie_len = sizeof(wpa_ie); 1101 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 1102 wpa_ie, &wpa_ie_len)) { 1103 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key " 1104 "management and encryption suites"); 1105 return; 1106 } 1107 } else if (ssid->key_mgmt & 1108 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X | 1109 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK | 1110 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 | 1111 WPA_KEY_MGMT_IEEE8021X_SHA256)) { 1112 wpa_ie_len = sizeof(wpa_ie); 1113 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 1114 wpa_ie, &wpa_ie_len)) { 1115 wpa_printf(MSG_WARNING, "WPA: Failed to set WPA key " 1116 "management and encryption suites (no scan " 1117 "results)"); 1118 return; 1119 } 1120#ifdef CONFIG_WPS 1121 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 1122 struct wpabuf *wps_ie; 1123 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 1124 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) { 1125 wpa_ie_len = wpabuf_len(wps_ie); 1126 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len); 1127 } else 1128 wpa_ie_len = 0; 1129 wpabuf_free(wps_ie); 1130 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1131#endif /* CONFIG_WPS */ 1132 } else { 1133 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 1134 wpa_ie_len = 0; 1135 } 1136 1137 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL); 1138 use_crypt = 1; 1139 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher); 1140 cipher_group = cipher_suite2driver(wpa_s->group_cipher); 1141 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || 1142 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1143 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) 1144 use_crypt = 0; 1145 if (wpa_set_wep_keys(wpa_s, ssid)) { 1146 use_crypt = 1; 1147 wep_keys_set = 1; 1148 } 1149 } 1150 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) 1151 use_crypt = 0; 1152 1153#ifdef IEEE8021X_EAPOL 1154 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 1155 if ((ssid->eapol_flags & 1156 (EAPOL_FLAG_REQUIRE_KEY_UNICAST | 1157 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 && 1158 !wep_keys_set) { 1159 use_crypt = 0; 1160 } else { 1161 /* Assume that dynamic WEP-104 keys will be used and 1162 * set cipher suites in order for drivers to expect 1163 * encryption. */ 1164 cipher_pairwise = cipher_group = CIPHER_WEP104; 1165 } 1166 } 1167#endif /* IEEE8021X_EAPOL */ 1168 1169 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1170 /* Set the key before (and later after) association */ 1171 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1172 } 1173 1174 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 1175 os_memset(¶ms, 0, sizeof(params)); 1176 if (bss) { 1177 params.bssid = bss->bssid; 1178 params.ssid = bss->ssid; 1179 params.ssid_len = bss->ssid_len; 1180 params.freq = bss->freq; 1181 } else { 1182 params.ssid = ssid->ssid; 1183 params.ssid_len = ssid->ssid_len; 1184 } 1185 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 && 1186 params.freq == 0) 1187 params.freq = ssid->frequency; /* Initial channel for IBSS */ 1188 params.wpa_ie = wpa_ie; 1189 params.wpa_ie_len = wpa_ie_len; 1190 params.pairwise_suite = cipher_pairwise; 1191 params.group_suite = cipher_group; 1192 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt); 1193 params.auth_alg = algs; 1194 params.mode = ssid->mode; 1195 for (i = 0; i < NUM_WEP_KEYS; i++) { 1196 if (ssid->wep_key_len[i]) 1197 params.wep_key[i] = ssid->wep_key[i]; 1198 params.wep_key_len[i] = ssid->wep_key_len[i]; 1199 } 1200 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 1201 1202 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && 1203 (params.key_mgmt_suite == KEY_MGMT_PSK || 1204 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) { 1205 params.passphrase = ssid->passphrase; 1206 if (ssid->psk_set) 1207 params.psk = ssid->psk; 1208 } 1209 1210 params.drop_unencrypted = use_crypt; 1211 1212#ifdef CONFIG_IEEE80211W 1213 params.mgmt_frame_protection = ssid->ieee80211w; 1214 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) { 1215 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 1216 struct wpa_ie_data ie; 1217 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 && 1218 ie.capabilities & 1219 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 1220 wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: " 1221 "require MFP"); 1222 params.mgmt_frame_protection = 1223 MGMT_FRAME_PROTECTION_REQUIRED; 1224 } 1225 } 1226#endif /* CONFIG_IEEE80211W */ 1227 1228 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) 1229 ret = ieee80211_sta_associate(wpa_s, ¶ms); 1230 else 1231 ret = wpa_drv_associate(wpa_s, ¶ms); 1232 if (ret < 0) { 1233 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver " 1234 "failed"); 1235 /* try to continue anyway; new association will be tried again 1236 * after timeout */ 1237 assoc_failed = 1; 1238 } 1239 1240 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { 1241 /* Set the key after the association just in case association 1242 * cleared the previously configured key. */ 1243 wpa_supplicant_set_wpa_none_key(wpa_s, ssid); 1244 /* No need to timeout authentication since there is no key 1245 * management. */ 1246 wpa_supplicant_cancel_auth_timeout(wpa_s); 1247 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 1248#ifdef CONFIG_IBSS_RSN 1249 } else if (ssid->mode == WPAS_MODE_IBSS && 1250 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE && 1251 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) { 1252 ibss_rsn_set_psk(wpa_s->ibss_rsn, ssid->psk); 1253 /* 1254 * RSN IBSS authentication is per-STA and we can disable the 1255 * per-BSSID authentication. 1256 */ 1257 wpa_supplicant_cancel_auth_timeout(wpa_s); 1258#endif /* CONFIG_IBSS_RSN */ 1259 } else { 1260 /* Timeout for IEEE 802.11 authentication and association */ 1261 int timeout = 60; 1262 1263 if (assoc_failed) { 1264 /* give IBSS a bit more time */ 1265 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5; 1266 } else if (wpa_s->conf->ap_scan == 1) { 1267 /* give IBSS a bit more time */ 1268 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10; 1269 } 1270 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0); 1271 } 1272 1273 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 && 1274 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) { 1275 /* Set static WEP keys again */ 1276 wpa_set_wep_keys(wpa_s, ssid); 1277 } 1278 1279 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) { 1280 /* 1281 * Do not allow EAP session resumption between different 1282 * network configurations. 1283 */ 1284 eapol_sm_invalidate_cached_session(wpa_s->eapol); 1285 } 1286 old_ssid = wpa_s->current_ssid; 1287 wpa_s->current_ssid = ssid; 1288 wpa_s->current_bss = bss; 1289 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 1290 wpa_supplicant_initiate_eapol(wpa_s); 1291 if (old_ssid != wpa_s->current_ssid) 1292 wpas_notify_network_changed(wpa_s); 1293} 1294 1295 1296/** 1297 * wpa_supplicant_disassociate - Disassociate the current connection 1298 * @wpa_s: Pointer to wpa_supplicant data 1299 * @reason_code: IEEE 802.11 reason code for the disassociate frame 1300 * 1301 * This function is used to request %wpa_supplicant to disassociate with the 1302 * current AP. 1303 */ 1304void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s, 1305 int reason_code) 1306{ 1307 struct wpa_ssid *old_ssid; 1308 u8 *addr = NULL; 1309 1310 if (!is_zero_ether_addr(wpa_s->bssid)) { 1311 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) 1312 ieee80211_sta_disassociate(wpa_s, reason_code); 1313 else 1314 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code); 1315 addr = wpa_s->bssid; 1316 } 1317 wpa_clear_keys(wpa_s, addr); 1318 wpa_supplicant_mark_disassoc(wpa_s); 1319 old_ssid = wpa_s->current_ssid; 1320 wpa_s->current_ssid = NULL; 1321 wpa_s->current_bss = NULL; 1322 wpa_sm_set_config(wpa_s->wpa, NULL); 1323 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 1324 if (old_ssid != wpa_s->current_ssid) 1325 wpas_notify_network_changed(wpa_s); 1326 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 1327} 1328 1329 1330/** 1331 * wpa_supplicant_deauthenticate - Deauthenticate the current connection 1332 * @wpa_s: Pointer to wpa_supplicant data 1333 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame 1334 * 1335 * This function is used to request %wpa_supplicant to deauthenticate from the 1336 * current AP. 1337 */ 1338void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s, 1339 int reason_code) 1340{ 1341 struct wpa_ssid *old_ssid; 1342 u8 *addr = NULL; 1343 1344 if (!is_zero_ether_addr(wpa_s->bssid)) { 1345 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) 1346 ieee80211_sta_deauthenticate(wpa_s, reason_code); 1347 else 1348 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid, 1349 reason_code); 1350 addr = wpa_s->bssid; 1351 } 1352 wpa_clear_keys(wpa_s, addr); 1353 wpa_supplicant_mark_disassoc(wpa_s); 1354 old_ssid = wpa_s->current_ssid; 1355 wpa_s->current_ssid = NULL; 1356 wpa_s->current_bss = NULL; 1357 wpa_sm_set_config(wpa_s->wpa, NULL); 1358 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 1359 if (old_ssid != wpa_s->current_ssid) 1360 wpas_notify_network_changed(wpa_s); 1361 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL); 1362} 1363 1364 1365/** 1366 * wpa_supplicant_enable_network - Mark a configured network as enabled 1367 * @wpa_s: wpa_supplicant structure for a network interface 1368 * @ssid: wpa_ssid structure for a configured network or %NULL 1369 * 1370 * Enables the specified network or all networks if no network specified. 1371 */ 1372void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s, 1373 struct wpa_ssid *ssid) 1374{ 1375 struct wpa_ssid *other_ssid; 1376 int was_disabled; 1377 1378 if (ssid == NULL) { 1379 other_ssid = wpa_s->conf->ssid; 1380 while (other_ssid) { 1381 if (other_ssid == wpa_s->current_ssid && 1382 other_ssid->disabled) 1383 wpa_s->reassociate = 1; 1384 1385 was_disabled = other_ssid->disabled; 1386 1387 other_ssid->disabled = 0; 1388 1389 if (was_disabled != other_ssid->disabled) 1390 wpas_notify_network_enabled_changed( 1391 wpa_s, other_ssid); 1392 1393 other_ssid = other_ssid->next; 1394 } 1395 if (wpa_s->reassociate) 1396 wpa_supplicant_req_scan(wpa_s, 0, 0); 1397 } else if (ssid->disabled) { 1398 if (wpa_s->current_ssid == NULL) { 1399 /* 1400 * Try to reassociate since there is no current 1401 * configuration and a new network was made available. 1402 */ 1403 wpa_s->reassociate = 1; 1404 wpa_supplicant_req_scan(wpa_s, 0, 0); 1405 } 1406 1407 was_disabled = ssid->disabled; 1408 1409 ssid->disabled = 0; 1410 1411 if (was_disabled != ssid->disabled) 1412 wpas_notify_network_enabled_changed(wpa_s, ssid); 1413 } 1414} 1415 1416 1417/** 1418 * wpa_supplicant_disable_network - Mark a configured network as disabled 1419 * @wpa_s: wpa_supplicant structure for a network interface 1420 * @ssid: wpa_ssid structure for a configured network or %NULL 1421 * 1422 * Disables the specified network or all networks if no network specified. 1423 */ 1424void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s, 1425 struct wpa_ssid *ssid) 1426{ 1427 struct wpa_ssid *other_ssid; 1428 int was_disabled; 1429 1430 if (ssid == NULL) { 1431 other_ssid = wpa_s->conf->ssid; 1432 while (other_ssid) { 1433 was_disabled = other_ssid->disabled; 1434 1435 other_ssid->disabled = 1; 1436 1437 if (was_disabled != other_ssid->disabled) 1438 wpas_notify_network_enabled_changed( 1439 wpa_s, other_ssid); 1440 1441 other_ssid = other_ssid->next; 1442 } 1443 if (wpa_s->current_ssid) 1444 wpa_supplicant_disassociate( 1445 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1446 } else { 1447 if (ssid == wpa_s->current_ssid) 1448 wpa_supplicant_disassociate( 1449 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1450 1451 was_disabled = ssid->disabled; 1452 1453 ssid->disabled = 1; 1454 1455 if (was_disabled != ssid->disabled) 1456 wpas_notify_network_enabled_changed(wpa_s, ssid); 1457 } 1458} 1459 1460 1461/** 1462 * wpa_supplicant_select_network - Attempt association with a network 1463 * @wpa_s: wpa_supplicant structure for a network interface 1464 * @ssid: wpa_ssid structure for a configured network or %NULL for any network 1465 */ 1466void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s, 1467 struct wpa_ssid *ssid) 1468{ 1469 1470 struct wpa_ssid *other_ssid; 1471 1472 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid) 1473 wpa_supplicant_disassociate( 1474 wpa_s, WLAN_REASON_DEAUTH_LEAVING); 1475 1476 /* 1477 * Mark all other networks disabled or mark all networks enabled if no 1478 * network specified. 1479 */ 1480 other_ssid = wpa_s->conf->ssid; 1481 while (other_ssid) { 1482 int was_disabled = other_ssid->disabled; 1483 1484 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0; 1485 1486 if (was_disabled != other_ssid->disabled) 1487 wpas_notify_network_enabled_changed(wpa_s, other_ssid); 1488 1489 other_ssid = other_ssid->next; 1490 } 1491 wpa_s->disconnected = 0; 1492 wpa_s->reassociate = 1; 1493 wpa_supplicant_req_scan(wpa_s, 0, 0); 1494 1495 if (ssid) 1496 wpas_notify_network_selected(wpa_s, ssid); 1497} 1498 1499 1500/** 1501 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface 1502 * @wpa_s: wpa_supplicant structure for a network interface 1503 * @ap_scan: AP scan mode 1504 * Returns: 0 if succeed or -1 if ap_scan has an invalid value 1505 * 1506 */ 1507int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan) 1508{ 1509 1510 int old_ap_scan; 1511 1512 if (ap_scan < 0 || ap_scan > 2) 1513 return -1; 1514 1515 old_ap_scan = wpa_s->conf->ap_scan; 1516 wpa_s->conf->ap_scan = ap_scan; 1517 1518 if (old_ap_scan != wpa_s->conf->ap_scan) 1519 wpas_notify_ap_scan_changed(wpa_s); 1520 1521 return 0; 1522} 1523 1524 1525/** 1526 * wpa_supplicant_set_debug_params - Set global debug params 1527 * @global: wpa_global structure 1528 * @debug_level: debug level 1529 * @debug_timestamp: determines if show timestamp in debug data 1530 * @debug_show_keys: determines if show keys in debug data 1531 * Returns: 0 if succeed or -1 if debug_level has wrong value 1532 */ 1533int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level, 1534 int debug_timestamp, int debug_show_keys) 1535{ 1536 1537 int old_level, old_timestamp, old_show_keys; 1538 1539 /* check for allowed debuglevels */ 1540 if (debug_level != MSG_MSGDUMP && 1541 debug_level != MSG_DEBUG && 1542 debug_level != MSG_INFO && 1543 debug_level != MSG_WARNING && 1544 debug_level != MSG_ERROR) 1545 return -1; 1546 1547 old_level = wpa_debug_level; 1548 old_timestamp = wpa_debug_timestamp; 1549 old_show_keys = wpa_debug_show_keys; 1550 1551 wpa_debug_level = debug_level; 1552 wpa_debug_timestamp = debug_timestamp ? 1 : 0; 1553 wpa_debug_show_keys = debug_show_keys ? 1 : 0; 1554 1555 if (wpa_debug_level != old_level) 1556 wpas_notify_debug_level_changed(global); 1557 if (wpa_debug_timestamp != old_timestamp) 1558 wpas_notify_debug_timestamp_changed(global); 1559 if (wpa_debug_show_keys != old_show_keys) 1560 wpas_notify_debug_show_keys_changed(global); 1561 1562 return 0; 1563} 1564 1565 1566/** 1567 * wpa_supplicant_get_ssid - Get a pointer to the current network structure 1568 * @wpa_s: Pointer to wpa_supplicant data 1569 * Returns: A pointer to the current network structure or %NULL on failure 1570 */ 1571struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s) 1572{ 1573 struct wpa_ssid *entry; 1574 u8 ssid[MAX_SSID_LEN]; 1575 int res; 1576 size_t ssid_len; 1577 u8 bssid[ETH_ALEN]; 1578 int wired; 1579 1580 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) { 1581 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) { 1582 wpa_printf(MSG_WARNING, "Could not read SSID from " 1583 "MLME."); 1584 return NULL; 1585 } 1586 } else { 1587 res = wpa_drv_get_ssid(wpa_s, ssid); 1588 if (res < 0) { 1589 wpa_printf(MSG_WARNING, "Could not read SSID from " 1590 "driver."); 1591 return NULL; 1592 } 1593 ssid_len = res; 1594 } 1595 1596 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) 1597 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN); 1598 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) { 1599 wpa_printf(MSG_WARNING, "Could not read BSSID from driver."); 1600 return NULL; 1601 } 1602 1603 wired = wpa_s->conf->ap_scan == 0 && 1604 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED); 1605 1606 entry = wpa_s->conf->ssid; 1607 while (entry) { 1608 if (!entry->disabled && 1609 ((ssid_len == entry->ssid_len && 1610 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) && 1611 (!entry->bssid_set || 1612 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 1613 return entry; 1614#ifdef CONFIG_WPS 1615 if (!entry->disabled && 1616 (entry->key_mgmt & WPA_KEY_MGMT_WPS) && 1617 (entry->ssid == NULL || entry->ssid_len == 0) && 1618 (!entry->bssid_set || 1619 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)) 1620 return entry; 1621#endif /* CONFIG_WPS */ 1622 entry = entry->next; 1623 } 1624 1625 return NULL; 1626} 1627 1628 1629static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s, 1630 const char *name) 1631{ 1632 int i; 1633 size_t len; 1634 const char *pos; 1635 1636 if (wpa_s == NULL) 1637 return -1; 1638 1639 if (wpa_drivers[0] == NULL) { 1640 wpa_printf(MSG_ERROR, "No driver interfaces build into " 1641 "wpa_supplicant."); 1642 return -1; 1643 } 1644 1645 if (name == NULL) { 1646 /* default to first driver in the list */ 1647 wpa_s->driver = wpa_drivers[0]; 1648 wpa_s->global_drv_priv = wpa_s->global->drv_priv[0]; 1649 return 0; 1650 } 1651 1652 pos = os_strchr(name, ','); 1653 if (pos) 1654 len = pos - name; 1655 else 1656 len = os_strlen(name); 1657 for (i = 0; wpa_drivers[i]; i++) { 1658 if (os_strlen(wpa_drivers[i]->name) == len && 1659 os_strncmp(name, wpa_drivers[i]->name, len) == 1660 0) { 1661 wpa_s->driver = wpa_drivers[i]; 1662 wpa_s->global_drv_priv = wpa_s->global->drv_priv[i]; 1663 return 0; 1664 } 1665 } 1666 1667 wpa_printf(MSG_ERROR, "Unsupported driver '%s'.", name); 1668 return -1; 1669} 1670 1671 1672/** 1673 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant 1674 * @ctx: Context pointer (wpa_s); this is the ctx variable registered 1675 * with struct wpa_driver_ops::init() 1676 * @src_addr: Source address of the EAPOL frame 1677 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header) 1678 * @len: Length of the EAPOL data 1679 * 1680 * This function is called for each received EAPOL frame. Most driver 1681 * interfaces rely on more generic OS mechanism for receiving frames through 1682 * l2_packet, but if such a mechanism is not available, the driver wrapper may 1683 * take care of received EAPOL frames and deliver them to the core supplicant 1684 * code by calling this function. 1685 */ 1686void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr, 1687 const u8 *buf, size_t len) 1688{ 1689 struct wpa_supplicant *wpa_s = ctx; 1690 1691 wpa_printf(MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr)); 1692 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len); 1693 1694 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 1695 /* 1696 * There is possible race condition between receiving the 1697 * association event and the EAPOL frame since they are coming 1698 * through different paths from the driver. In order to avoid 1699 * issues in trying to process the EAPOL frame before receiving 1700 * association information, lets queue it for processing until 1701 * the association event is received. 1702 */ 1703 wpa_printf(MSG_DEBUG, "Not associated - Delay processing of " 1704 "received EAPOL frame"); 1705 wpabuf_free(wpa_s->pending_eapol_rx); 1706 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len); 1707 if (wpa_s->pending_eapol_rx) { 1708 os_get_time(&wpa_s->pending_eapol_rx_time); 1709 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr, 1710 ETH_ALEN); 1711 } 1712 return; 1713 } 1714 1715#ifdef CONFIG_AP 1716 if (wpa_s->ap_iface) { 1717 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len); 1718 return; 1719 } 1720#endif /* CONFIG_AP */ 1721 1722 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 1723 wpa_printf(MSG_DEBUG, "Ignored received EAPOL frame since " 1724 "no key management is configured"); 1725 return; 1726 } 1727 1728 if (wpa_s->eapol_received == 0 && 1729 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) || 1730 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 1731 wpa_s->wpa_state != WPA_COMPLETED) && 1732 (wpa_s->current_ssid == NULL || 1733 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) { 1734 /* Timeout for completing IEEE 802.1X and WPA authentication */ 1735 wpa_supplicant_req_auth_timeout( 1736 wpa_s, 1737 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) || 1738 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA || 1739 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ? 1740 70 : 10, 0); 1741 } 1742 wpa_s->eapol_received++; 1743 1744 if (wpa_s->countermeasures) { 1745 wpa_printf(MSG_INFO, "WPA: Countermeasures - dropped EAPOL " 1746 "packet"); 1747 return; 1748 } 1749 1750#ifdef CONFIG_IBSS_RSN 1751 if (wpa_s->current_ssid && 1752 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) { 1753 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len); 1754 return; 1755 } 1756#endif /* CONFIG_IBSS_RSN */ 1757 1758 /* Source address of the incoming EAPOL frame could be compared to the 1759 * current BSSID. However, it is possible that a centralized 1760 * Authenticator could be using another MAC address than the BSSID of 1761 * an AP, so just allow any address to be used for now. The replies are 1762 * still sent to the current BSSID (if available), though. */ 1763 1764 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN); 1765 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) && 1766 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0) 1767 return; 1768 wpa_drv_poll(wpa_s); 1769 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 1770 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len); 1771 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 1772 /* 1773 * Set portValid = TRUE here since we are going to skip 4-way 1774 * handshake processing which would normally set portValid. We 1775 * need this to allow the EAPOL state machines to be completed 1776 * without going through EAPOL-Key handshake. 1777 */ 1778 eapol_sm_notify_portValid(wpa_s->eapol, TRUE); 1779 } 1780} 1781 1782 1783/** 1784 * wpa_supplicant_driver_init - Initialize driver interface parameters 1785 * @wpa_s: Pointer to wpa_supplicant data 1786 * Returns: 0 on success, -1 on failure 1787 * 1788 * This function is called to initialize driver interface parameters. 1789 * wpa_drv_init() must have been called before this function to initialize the 1790 * driver interface. 1791 */ 1792int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s) 1793{ 1794 static int interface_count = 0; 1795 1796 if (wpa_s->driver->send_eapol) { 1797 const u8 *addr = wpa_drv_get_mac_addr(wpa_s); 1798 if (addr) 1799 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN); 1800 } else { 1801 wpa_s->l2 = l2_packet_init(wpa_s->ifname, 1802 wpa_drv_get_mac_addr(wpa_s), 1803 ETH_P_EAPOL, 1804 wpa_supplicant_rx_eapol, wpa_s, 0); 1805 if (wpa_s->l2 == NULL) 1806 return -1; 1807 } 1808 1809 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) { 1810 wpa_printf(MSG_ERROR, "Failed to get own L2 address"); 1811 return -1; 1812 } 1813 1814 wpa_printf(MSG_DEBUG, "Own MAC address: " MACSTR, 1815 MAC2STR(wpa_s->own_addr)); 1816 1817 if (wpa_s->bridge_ifname[0]) { 1818 wpa_printf(MSG_DEBUG, "Receiving packets from bridge interface" 1819 " '%s'", wpa_s->bridge_ifname); 1820 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname, 1821 wpa_s->own_addr, 1822 ETH_P_EAPOL, 1823 wpa_supplicant_rx_eapol, wpa_s, 1824 0); 1825 if (wpa_s->l2_br == NULL) { 1826 wpa_printf(MSG_ERROR, "Failed to open l2_packet " 1827 "connection for the bridge interface '%s'", 1828 wpa_s->bridge_ifname); 1829 return -1; 1830 } 1831 } 1832 1833 wpa_clear_keys(wpa_s, NULL); 1834 1835 /* Make sure that TKIP countermeasures are not left enabled (could 1836 * happen if wpa_supplicant is killed during countermeasures. */ 1837 wpa_drv_set_countermeasures(wpa_s, 0); 1838 1839 wpa_printf(MSG_DEBUG, "RSN: flushing PMKID list in the driver"); 1840 wpa_drv_flush_pmkid(wpa_s); 1841 1842 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN; 1843 if (wpa_supplicant_enabled_networks(wpa_s->conf)) { 1844 wpa_supplicant_req_scan(wpa_s, interface_count, 100000); 1845 interface_count++; 1846 } else 1847 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); 1848 1849 return 0; 1850} 1851 1852 1853static int wpa_supplicant_daemon(const char *pid_file) 1854{ 1855 wpa_printf(MSG_DEBUG, "Daemonize.."); 1856 return os_daemonize(pid_file); 1857} 1858 1859 1860static struct wpa_supplicant * wpa_supplicant_alloc(void) 1861{ 1862 struct wpa_supplicant *wpa_s; 1863 1864 wpa_s = os_zalloc(sizeof(*wpa_s)); 1865 if (wpa_s == NULL) 1866 return NULL; 1867 wpa_s->scan_req = 1; 1868 wpa_s->new_connection = 1; 1869 1870 return wpa_s; 1871} 1872 1873 1874static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s, 1875 struct wpa_interface *iface) 1876{ 1877 const char *ifname, *driver; 1878 struct wpa_driver_capa capa; 1879 1880 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver " 1881 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname, 1882 iface->confname ? iface->confname : "N/A", 1883 iface->driver ? iface->driver : "default", 1884 iface->ctrl_interface ? iface->ctrl_interface : "N/A", 1885 iface->bridge_ifname ? iface->bridge_ifname : "N/A"); 1886 1887 if (iface->confname) { 1888#ifdef CONFIG_BACKEND_FILE 1889 wpa_s->confname = os_rel2abs_path(iface->confname); 1890 if (wpa_s->confname == NULL) { 1891 wpa_printf(MSG_ERROR, "Failed to get absolute path " 1892 "for configuration file '%s'.", 1893 iface->confname); 1894 return -1; 1895 } 1896 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'", 1897 iface->confname, wpa_s->confname); 1898#else /* CONFIG_BACKEND_FILE */ 1899 wpa_s->confname = os_strdup(iface->confname); 1900#endif /* CONFIG_BACKEND_FILE */ 1901 wpa_s->conf = wpa_config_read(wpa_s->confname); 1902 if (wpa_s->conf == NULL) { 1903 wpa_printf(MSG_ERROR, "Failed to read or parse " 1904 "configuration '%s'.", wpa_s->confname); 1905 return -1; 1906 } 1907 1908 /* 1909 * Override ctrl_interface and driver_param if set on command 1910 * line. 1911 */ 1912 if (iface->ctrl_interface) { 1913 os_free(wpa_s->conf->ctrl_interface); 1914 wpa_s->conf->ctrl_interface = 1915 os_strdup(iface->ctrl_interface); 1916 } 1917 1918 if (iface->driver_param) { 1919 os_free(wpa_s->conf->driver_param); 1920 wpa_s->conf->driver_param = 1921 os_strdup(iface->driver_param); 1922 } 1923 } else 1924 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface, 1925 iface->driver_param); 1926 1927 if (wpa_s->conf == NULL) { 1928 wpa_printf(MSG_ERROR, "\nNo configuration found."); 1929 return -1; 1930 } 1931 1932 if (iface->ifname == NULL) { 1933 wpa_printf(MSG_ERROR, "\nInterface name is required."); 1934 return -1; 1935 } 1936 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) { 1937 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.", 1938 iface->ifname); 1939 return -1; 1940 } 1941 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname)); 1942 1943 if (iface->bridge_ifname) { 1944 if (os_strlen(iface->bridge_ifname) >= 1945 sizeof(wpa_s->bridge_ifname)) { 1946 wpa_printf(MSG_ERROR, "\nToo long bridge interface " 1947 "name '%s'.", iface->bridge_ifname); 1948 return -1; 1949 } 1950 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname, 1951 sizeof(wpa_s->bridge_ifname)); 1952 } 1953 1954 /* RSNA Supplicant Key Management - INITIALIZE */ 1955 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); 1956 eapol_sm_notify_portValid(wpa_s->eapol, FALSE); 1957 1958 /* Initialize driver interface and register driver event handler before 1959 * L2 receive handler so that association events are processed before 1960 * EAPOL-Key packets if both become available for the same select() 1961 * call. */ 1962 driver = iface->driver; 1963next_driver: 1964 if (wpa_supplicant_set_driver(wpa_s, driver) < 0) 1965 return -1; 1966 1967 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname); 1968 if (wpa_s->drv_priv == NULL) { 1969 const char *pos; 1970 pos = driver ? os_strchr(driver, ',') : NULL; 1971 if (pos) { 1972 wpa_printf(MSG_DEBUG, "Failed to initialize driver " 1973 "interface - try next driver wrapper"); 1974 driver = pos + 1; 1975 goto next_driver; 1976 } 1977 wpa_printf(MSG_ERROR, "Failed to initialize driver interface"); 1978 return -1; 1979 } 1980 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) { 1981 wpa_printf(MSG_ERROR, "Driver interface rejected " 1982 "driver_param '%s'", wpa_s->conf->driver_param); 1983 return -1; 1984 } 1985 1986 ifname = wpa_drv_get_ifname(wpa_s); 1987 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) { 1988 wpa_printf(MSG_DEBUG, "Driver interface replaced interface " 1989 "name with '%s'", ifname); 1990 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname)); 1991 } 1992 1993 if (wpa_supplicant_init_wpa(wpa_s) < 0) 1994 return -1; 1995 1996 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, 1997 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname : 1998 NULL); 1999 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth); 2000 2001 if (wpa_s->conf->dot11RSNAConfigPMKLifetime && 2002 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME, 2003 wpa_s->conf->dot11RSNAConfigPMKLifetime)) { 2004 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for " 2005 "dot11RSNAConfigPMKLifetime"); 2006 return -1; 2007 } 2008 2009 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold && 2010 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD, 2011 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) { 2012 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for " 2013 "dot11RSNAConfigPMKReauthThreshold"); 2014 return -1; 2015 } 2016 2017 if (wpa_s->conf->dot11RSNAConfigSATimeout && 2018 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, 2019 wpa_s->conf->dot11RSNAConfigSATimeout)) { 2020 wpa_printf(MSG_ERROR, "Invalid WPA parameter value for " 2021 "dot11RSNAConfigSATimeout"); 2022 return -1; 2023 } 2024 2025 if (wpa_drv_get_capa(wpa_s, &capa) == 0) { 2026 wpa_s->drv_flags = capa.flags; 2027 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) { 2028 if (ieee80211_sta_init(wpa_s)) 2029 return -1; 2030 } 2031 wpa_s->max_scan_ssids = capa.max_scan_ssids; 2032 wpa_s->max_remain_on_chan = capa.max_remain_on_chan; 2033 } 2034 if (wpa_s->max_remain_on_chan == 0) 2035 wpa_s->max_remain_on_chan = 1000; 2036 2037 if (wpa_supplicant_driver_init(wpa_s) < 0) 2038 return -1; 2039 2040 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] && 2041 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) { 2042 wpa_printf(MSG_DEBUG, "Failed to set country"); 2043 return -1; 2044 } 2045 2046 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr); 2047 2048 if (wpas_wps_init(wpa_s)) 2049 return -1; 2050 2051 if (wpa_supplicant_init_eapol(wpa_s) < 0) 2052 return -1; 2053 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol); 2054 2055 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s); 2056 if (wpa_s->ctrl_iface == NULL) { 2057 wpa_printf(MSG_ERROR, 2058 "Failed to initialize control interface '%s'.\n" 2059 "You may have another wpa_supplicant process " 2060 "already running or the file was\n" 2061 "left by an unclean termination of wpa_supplicant " 2062 "in which case you will need\n" 2063 "to manually remove this file before starting " 2064 "wpa_supplicant again.\n", 2065 wpa_s->conf->ctrl_interface); 2066 return -1; 2067 } 2068 2069#ifdef CONFIG_IBSS_RSN 2070 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s); 2071 if (!wpa_s->ibss_rsn) { 2072 wpa_printf(MSG_DEBUG, "Failed to init IBSS RSN"); 2073 return -1; 2074 } 2075#endif /* CONFIG_IBSS_RSN */ 2076 2077 if (wpa_bss_init(wpa_s) < 0) 2078 return -1; 2079 2080 return 0; 2081} 2082 2083 2084static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s, 2085 int notify) 2086{ 2087 if (wpa_s->drv_priv) { 2088 wpa_supplicant_deauthenticate(wpa_s, 2089 WLAN_REASON_DEAUTH_LEAVING); 2090 2091 wpa_drv_set_countermeasures(wpa_s, 0); 2092 wpa_clear_keys(wpa_s, NULL); 2093 } 2094 2095 wpa_supplicant_cleanup(wpa_s); 2096 2097 if (notify) 2098 wpas_notify_iface_removed(wpa_s); 2099 2100 if (wpa_s->drv_priv) 2101 wpa_drv_deinit(wpa_s); 2102} 2103 2104 2105/** 2106 * wpa_supplicant_add_iface - Add a new network interface 2107 * @global: Pointer to global data from wpa_supplicant_init() 2108 * @iface: Interface configuration options 2109 * Returns: Pointer to the created interface or %NULL on failure 2110 * 2111 * This function is used to add new network interfaces for %wpa_supplicant. 2112 * This can be called before wpa_supplicant_run() to add interfaces before the 2113 * main event loop has been started. In addition, new interfaces can be added 2114 * dynamically while %wpa_supplicant is already running. This could happen, 2115 * e.g., when a hotplug network adapter is inserted. 2116 */ 2117struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global, 2118 struct wpa_interface *iface) 2119{ 2120 struct wpa_supplicant *wpa_s; 2121 struct wpa_interface t_iface; 2122 struct wpa_ssid *ssid; 2123 2124 if (global == NULL || iface == NULL) 2125 return NULL; 2126 2127 wpa_s = wpa_supplicant_alloc(); 2128 if (wpa_s == NULL) 2129 return NULL; 2130 2131 wpa_s->global = global; 2132 2133 t_iface = *iface; 2134 if (global->params.override_driver) { 2135 wpa_printf(MSG_DEBUG, "Override interface parameter: driver " 2136 "('%s' -> '%s')", 2137 iface->driver, global->params.override_driver); 2138 t_iface.driver = global->params.override_driver; 2139 } 2140 if (global->params.override_ctrl_interface) { 2141 wpa_printf(MSG_DEBUG, "Override interface parameter: " 2142 "ctrl_interface ('%s' -> '%s')", 2143 iface->ctrl_interface, 2144 global->params.override_ctrl_interface); 2145 t_iface.ctrl_interface = 2146 global->params.override_ctrl_interface; 2147 } 2148 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) { 2149 wpa_printf(MSG_DEBUG, "Failed to add interface %s", 2150 iface->ifname); 2151 wpa_supplicant_deinit_iface(wpa_s, 0); 2152 os_free(wpa_s); 2153 return NULL; 2154 } 2155 2156 /* Notify the control interfaces about new iface */ 2157 if (wpas_notify_iface_added(wpa_s)) { 2158 wpa_supplicant_deinit_iface(wpa_s, 1); 2159 os_free(wpa_s); 2160 return NULL; 2161 } 2162 2163 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) 2164 wpas_notify_network_added(wpa_s, ssid); 2165 2166 wpa_s->next = global->ifaces; 2167 global->ifaces = wpa_s; 2168 2169 wpa_printf(MSG_DEBUG, "Added interface %s", wpa_s->ifname); 2170 2171 return wpa_s; 2172} 2173 2174 2175/** 2176 * wpa_supplicant_remove_iface - Remove a network interface 2177 * @global: Pointer to global data from wpa_supplicant_init() 2178 * @wpa_s: Pointer to the network interface to be removed 2179 * Returns: 0 if interface was removed, -1 if interface was not found 2180 * 2181 * This function can be used to dynamically remove network interfaces from 2182 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In 2183 * addition, this function is used to remove all remaining interfaces when 2184 * %wpa_supplicant is terminated. 2185 */ 2186int wpa_supplicant_remove_iface(struct wpa_global *global, 2187 struct wpa_supplicant *wpa_s) 2188{ 2189 struct wpa_supplicant *prev; 2190 2191 /* Remove interface from the global list of interfaces */ 2192 prev = global->ifaces; 2193 if (prev == wpa_s) { 2194 global->ifaces = wpa_s->next; 2195 } else { 2196 while (prev && prev->next != wpa_s) 2197 prev = prev->next; 2198 if (prev == NULL) 2199 return -1; 2200 prev->next = wpa_s->next; 2201 } 2202 2203 wpa_printf(MSG_DEBUG, "Removing interface %s", wpa_s->ifname); 2204 2205 wpa_supplicant_deinit_iface(wpa_s, 1); 2206 os_free(wpa_s); 2207 2208 return 0; 2209} 2210 2211 2212/** 2213 * wpa_supplicant_get_iface - Get a new network interface 2214 * @global: Pointer to global data from wpa_supplicant_init() 2215 * @ifname: Interface name 2216 * Returns: Pointer to the interface or %NULL if not found 2217 */ 2218struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global, 2219 const char *ifname) 2220{ 2221 struct wpa_supplicant *wpa_s; 2222 2223 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2224 if (os_strcmp(wpa_s->ifname, ifname) == 0) 2225 return wpa_s; 2226 } 2227 return NULL; 2228} 2229 2230 2231/** 2232 * wpa_supplicant_init - Initialize %wpa_supplicant 2233 * @params: Parameters for %wpa_supplicant 2234 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure 2235 * 2236 * This function is used to initialize %wpa_supplicant. After successful 2237 * initialization, the returned data pointer can be used to add and remove 2238 * network interfaces, and eventually, to deinitialize %wpa_supplicant. 2239 */ 2240struct wpa_global * wpa_supplicant_init(struct wpa_params *params) 2241{ 2242 struct wpa_global *global; 2243 int ret, i; 2244 2245 if (params == NULL) 2246 return NULL; 2247 2248 wpa_debug_open_file(params->wpa_debug_file_path); 2249 if (params->wpa_debug_syslog) 2250 wpa_debug_open_syslog(); 2251 2252 ret = eap_register_methods(); 2253 if (ret) { 2254 wpa_printf(MSG_ERROR, "Failed to register EAP methods"); 2255 if (ret == -2) 2256 wpa_printf(MSG_ERROR, "Two or more EAP methods used " 2257 "the same EAP type."); 2258 return NULL; 2259 } 2260 2261 global = os_zalloc(sizeof(*global)); 2262 if (global == NULL) 2263 return NULL; 2264 global->params.daemonize = params->daemonize; 2265 global->params.wait_for_monitor = params->wait_for_monitor; 2266 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface; 2267 if (params->pid_file) 2268 global->params.pid_file = os_strdup(params->pid_file); 2269 if (params->ctrl_interface) 2270 global->params.ctrl_interface = 2271 os_strdup(params->ctrl_interface); 2272 if (params->override_driver) 2273 global->params.override_driver = 2274 os_strdup(params->override_driver); 2275 if (params->override_ctrl_interface) 2276 global->params.override_ctrl_interface = 2277 os_strdup(params->override_ctrl_interface); 2278 wpa_debug_level = global->params.wpa_debug_level = 2279 params->wpa_debug_level; 2280 wpa_debug_show_keys = global->params.wpa_debug_show_keys = 2281 params->wpa_debug_show_keys; 2282 wpa_debug_timestamp = global->params.wpa_debug_timestamp = 2283 params->wpa_debug_timestamp; 2284 2285 if (eloop_init()) { 2286 wpa_printf(MSG_ERROR, "Failed to initialize event loop"); 2287 wpa_supplicant_deinit(global); 2288 return NULL; 2289 } 2290 2291 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global); 2292 if (global->ctrl_iface == NULL) { 2293 wpa_supplicant_deinit(global); 2294 return NULL; 2295 } 2296 2297 if (wpas_notify_supplicant_initialized(global)) { 2298 wpa_supplicant_deinit(global); 2299 return NULL; 2300 } 2301 2302 for (i = 0; wpa_drivers[i]; i++) 2303 global->drv_count++; 2304 if (global->drv_count == 0) { 2305 wpa_printf(MSG_ERROR, "No drivers enabled"); 2306 wpa_supplicant_deinit(global); 2307 return NULL; 2308 } 2309 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *)); 2310 if (global->drv_priv == NULL) { 2311 wpa_supplicant_deinit(global); 2312 return NULL; 2313 } 2314 for (i = 0; wpa_drivers[i]; i++) { 2315 if (!wpa_drivers[i]->global_init) 2316 continue; 2317 global->drv_priv[i] = wpa_drivers[i]->global_init(); 2318 if (global->drv_priv[i] == NULL) { 2319 wpa_printf(MSG_ERROR, "Failed to initialize driver " 2320 "'%s'", wpa_drivers[i]->name); 2321 wpa_supplicant_deinit(global); 2322 return NULL; 2323 } 2324 } 2325 2326 return global; 2327} 2328 2329 2330/** 2331 * wpa_supplicant_run - Run the %wpa_supplicant main event loop 2332 * @global: Pointer to global data from wpa_supplicant_init() 2333 * Returns: 0 after successful event loop run, -1 on failure 2334 * 2335 * This function starts the main event loop and continues running as long as 2336 * there are any remaining events. In most cases, this function is running as 2337 * long as the %wpa_supplicant process in still in use. 2338 */ 2339int wpa_supplicant_run(struct wpa_global *global) 2340{ 2341 struct wpa_supplicant *wpa_s; 2342 2343 if (global->params.daemonize && 2344 wpa_supplicant_daemon(global->params.pid_file)) 2345 return -1; 2346 2347 if (global->params.wait_for_monitor) { 2348 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) 2349 if (wpa_s->ctrl_iface) 2350 wpa_supplicant_ctrl_iface_wait( 2351 wpa_s->ctrl_iface); 2352 } 2353 2354 eloop_register_signal_terminate(wpa_supplicant_terminate, global); 2355 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global); 2356 2357 eloop_run(); 2358 2359 return 0; 2360} 2361 2362 2363/** 2364 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant 2365 * @global: Pointer to global data from wpa_supplicant_init() 2366 * 2367 * This function is called to deinitialize %wpa_supplicant and to free all 2368 * allocated resources. Remaining network interfaces will also be removed. 2369 */ 2370void wpa_supplicant_deinit(struct wpa_global *global) 2371{ 2372 int i; 2373 2374 if (global == NULL) 2375 return; 2376 2377 while (global->ifaces) 2378 wpa_supplicant_remove_iface(global, global->ifaces); 2379 2380 if (global->ctrl_iface) 2381 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface); 2382 2383 wpas_notify_supplicant_deinitialized(global); 2384 2385 eap_peer_unregister_methods(); 2386#ifdef CONFIG_AP 2387 eap_server_unregister_methods(); 2388#endif /* CONFIG_AP */ 2389 2390 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) { 2391 if (!global->drv_priv[i]) 2392 continue; 2393 wpa_drivers[i]->global_deinit(global->drv_priv[i]); 2394 } 2395 os_free(global->drv_priv); 2396 2397 eloop_destroy(); 2398 2399 if (global->params.pid_file) { 2400 os_daemonize_terminate(global->params.pid_file); 2401 os_free(global->params.pid_file); 2402 } 2403 os_free(global->params.ctrl_interface); 2404 os_free(global->params.override_driver); 2405 os_free(global->params.override_ctrl_interface); 2406 2407 os_free(global); 2408 wpa_debug_close_syslog(); 2409 wpa_debug_close_file(); 2410} 2411