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