1 /* 2 * WPA Supplicant - Glue code to setup EAPOL and RSN modules 3 * Copyright (c) 2003-2015, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eapol_supp/eapol_supp_sm.h" 13 #include "rsn_supp/wpa.h" 14 #include "eloop.h" 15 #include "config.h" 16 #include "l2_packet/l2_packet.h" 17 #include "common/wpa_common.h" 18 #include "wpa_supplicant_i.h" 19 #include "driver_i.h" 20 #include "rsn_supp/pmksa_cache.h" 21 #include "sme.h" 22 #include "common/ieee802_11_defs.h" 23 #include "common/wpa_ctrl.h" 24 #include "wpas_glue.h" 25 #include "wps_supplicant.h" 26 #include "bss.h" 27 #include "scan.h" 28 #include "notify.h" 29 #include "wpas_kay.h" 30 31 32 #ifndef CONFIG_NO_CONFIG_BLOBS 33 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) 34 static void wpa_supplicant_set_config_blob(void *ctx, 35 struct wpa_config_blob *blob) 36 { 37 struct wpa_supplicant *wpa_s = ctx; 38 wpa_config_set_blob(wpa_s->conf, blob); 39 if (wpa_s->conf->update_config) { 40 int ret = wpa_config_write(wpa_s->confname, wpa_s->conf); 41 if (ret) { 42 wpa_printf(MSG_DEBUG, "Failed to update config after " 43 "blob set"); 44 } 45 } 46 } 47 48 49 static const struct wpa_config_blob * 50 wpa_supplicant_get_config_blob(void *ctx, const char *name) 51 { 52 struct wpa_supplicant *wpa_s = ctx; 53 return wpa_config_get_blob(wpa_s->conf, name); 54 } 55 #endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */ 56 #endif /* CONFIG_NO_CONFIG_BLOBS */ 57 58 59 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) 60 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type, 61 const void *data, u16 data_len, 62 size_t *msg_len, void **data_pos) 63 { 64 struct ieee802_1x_hdr *hdr; 65 66 *msg_len = sizeof(*hdr) + data_len; 67 hdr = os_malloc(*msg_len); 68 if (hdr == NULL) 69 return NULL; 70 71 hdr->version = wpa_s->conf->eapol_version; 72 hdr->type = type; 73 hdr->length = host_to_be16(data_len); 74 75 if (data) 76 os_memcpy(hdr + 1, data, data_len); 77 else 78 os_memset(hdr + 1, 0, data_len); 79 80 if (data_pos) 81 *data_pos = hdr + 1; 82 83 return (u8 *) hdr; 84 } 85 86 87 /** 88 * wpa_ether_send - Send Ethernet frame 89 * @wpa_s: Pointer to wpa_supplicant data 90 * @dest: Destination MAC address 91 * @proto: Ethertype in host byte order 92 * @buf: Frame payload starting from IEEE 802.1X header 93 * @len: Frame payload length 94 * Returns: >=0 on success, <0 on failure 95 */ 96 static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest, 97 u16 proto, const u8 *buf, size_t len) 98 { 99 #ifdef CONFIG_TESTING_OPTIONS 100 if (wpa_s->ext_eapol_frame_io && proto == ETH_P_EAPOL) { 101 size_t hex_len = 2 * len + 1; 102 char *hex = os_malloc(hex_len); 103 104 if (hex == NULL) 105 return -1; 106 wpa_snprintf_hex(hex, hex_len, buf, len); 107 wpa_msg(wpa_s, MSG_INFO, "EAPOL-TX " MACSTR " %s", 108 MAC2STR(dest), hex); 109 os_free(hex); 110 return 0; 111 } 112 #endif /* CONFIG_TESTING_OPTIONS */ 113 114 if (wpa_s->l2) { 115 return l2_packet_send(wpa_s->l2, dest, proto, buf, len); 116 } 117 118 return -1; 119 } 120 #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */ 121 122 123 #ifdef IEEE8021X_EAPOL 124 125 /** 126 * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator 127 * @ctx: Pointer to wpa_supplicant data (wpa_s) 128 * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*) 129 * @buf: EAPOL payload (after IEEE 802.1X header) 130 * @len: EAPOL payload length 131 * Returns: >=0 on success, <0 on failure 132 * 133 * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame 134 * to the current Authenticator. 135 */ 136 static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf, 137 size_t len) 138 { 139 struct wpa_supplicant *wpa_s = ctx; 140 u8 *msg, *dst, bssid[ETH_ALEN]; 141 size_t msglen; 142 int res; 143 144 /* TODO: could add l2_packet_sendmsg that allows fragments to avoid 145 * extra copy here */ 146 147 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 148 wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 149 /* Current SSID is not using IEEE 802.1X/EAP, so drop possible 150 * EAPOL frames (mainly, EAPOL-Start) from EAPOL state 151 * machines. */ 152 wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X " 153 "mode (type=%d len=%lu)", type, 154 (unsigned long) len); 155 return -1; 156 } 157 158 if (pmksa_cache_get_current(wpa_s->wpa) && 159 type == IEEE802_1X_TYPE_EAPOL_START) { 160 /* 161 * We were trying to use PMKSA caching and sending EAPOL-Start 162 * would abort that and trigger full EAPOL authentication. 163 * However, we've already waited for the AP/Authenticator to 164 * start 4-way handshake or EAP authentication, and apparently 165 * it has not done so since the startWhen timer has reached zero 166 * to get the state machine sending EAPOL-Start. This is not 167 * really supposed to happen, but an interoperability issue with 168 * a deployed AP has been identified where the connection fails 169 * due to that AP failing to operate correctly if PMKID is 170 * included in the Association Request frame. To work around 171 * this, assume PMKSA caching failed and try to initiate full 172 * EAP authentication. 173 */ 174 if (!wpa_s->current_ssid || 175 wpa_s->current_ssid->eap_workaround) { 176 wpa_printf(MSG_DEBUG, 177 "RSN: Timeout on waiting for the AP to initiate 4-way handshake for PMKSA caching or EAP authentication - try to force it to start EAP authentication"); 178 } else { 179 wpa_printf(MSG_DEBUG, 180 "RSN: PMKSA caching - do not send EAPOL-Start"); 181 return -1; 182 } 183 } 184 185 if (is_zero_ether_addr(wpa_s->bssid)) { 186 wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an " 187 "EAPOL frame"); 188 if (wpa_drv_get_bssid(wpa_s, bssid) == 0 && 189 !is_zero_ether_addr(bssid)) { 190 dst = bssid; 191 wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR 192 " from the driver as the EAPOL destination", 193 MAC2STR(dst)); 194 } else { 195 dst = wpa_s->last_eapol_src; 196 wpa_printf(MSG_DEBUG, "Using the source address of the" 197 " last received EAPOL frame " MACSTR " as " 198 "the EAPOL destination", 199 MAC2STR(dst)); 200 } 201 } else { 202 /* BSSID was already set (from (Re)Assoc event, so use it as 203 * the EAPOL destination. */ 204 dst = wpa_s->bssid; 205 } 206 207 msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL); 208 if (msg == NULL) 209 return -1; 210 211 wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst)); 212 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen); 213 res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen); 214 os_free(msg); 215 return res; 216 } 217 218 219 /** 220 * wpa_eapol_set_wep_key - set WEP key for the driver 221 * @ctx: Pointer to wpa_supplicant data (wpa_s) 222 * @unicast: 1 = individual unicast key, 0 = broadcast key 223 * @keyidx: WEP key index (0..3) 224 * @key: Pointer to key data 225 * @keylen: Key length in bytes 226 * Returns: 0 on success or < 0 on error. 227 */ 228 static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx, 229 const u8 *key, size_t keylen) 230 { 231 struct wpa_supplicant *wpa_s = ctx; 232 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 233 int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 : 234 WPA_CIPHER_WEP104; 235 if (unicast) 236 wpa_s->pairwise_cipher = cipher; 237 else 238 wpa_s->group_cipher = cipher; 239 } 240 return wpa_drv_set_key(wpa_s, WPA_ALG_WEP, 241 unicast ? wpa_s->bssid : NULL, 242 keyidx, unicast, NULL, 0, key, keylen); 243 } 244 245 246 static void wpa_supplicant_aborted_cached(void *ctx) 247 { 248 struct wpa_supplicant *wpa_s = ctx; 249 wpa_sm_aborted_cached(wpa_s->wpa); 250 } 251 252 253 static const char * result_str(enum eapol_supp_result result) 254 { 255 switch (result) { 256 case EAPOL_SUPP_RESULT_FAILURE: 257 return "FAILURE"; 258 case EAPOL_SUPP_RESULT_SUCCESS: 259 return "SUCCESS"; 260 case EAPOL_SUPP_RESULT_EXPECTED_FAILURE: 261 return "EXPECTED_FAILURE"; 262 } 263 return "?"; 264 } 265 266 267 static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, 268 enum eapol_supp_result result, 269 void *ctx) 270 { 271 struct wpa_supplicant *wpa_s = ctx; 272 int res, pmk_len; 273 u8 pmk[PMK_LEN]; 274 275 wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s", 276 result_str(result)); 277 278 if (wpas_wps_eapol_cb(wpa_s) > 0) 279 return; 280 281 wpa_s->eap_expected_failure = result == 282 EAPOL_SUPP_RESULT_EXPECTED_FAILURE; 283 284 if (result != EAPOL_SUPP_RESULT_SUCCESS) { 285 /* 286 * Make sure we do not get stuck here waiting for long EAPOL 287 * timeout if the AP does not disconnect in case of 288 * authentication failure. 289 */ 290 wpa_supplicant_req_auth_timeout(wpa_s, 2, 0); 291 } else { 292 ieee802_1x_notify_create_actor(wpa_s, wpa_s->last_eapol_src); 293 } 294 295 if (result != EAPOL_SUPP_RESULT_SUCCESS || 296 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 297 return; 298 299 if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) 300 return; 301 302 wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way " 303 "handshake"); 304 305 pmk_len = PMK_LEN; 306 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) { 307 #ifdef CONFIG_IEEE80211R 308 u8 buf[2 * PMK_LEN]; 309 wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for " 310 "driver-based 4-way hs and FT"); 311 res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN); 312 if (res == 0) { 313 os_memcpy(pmk, buf + PMK_LEN, PMK_LEN); 314 os_memset(buf, 0, sizeof(buf)); 315 } 316 #else /* CONFIG_IEEE80211R */ 317 res = -1; 318 #endif /* CONFIG_IEEE80211R */ 319 } else { 320 res = eapol_sm_get_key(eapol, pmk, PMK_LEN); 321 if (res) { 322 /* 323 * EAP-LEAP is an exception from other EAP methods: it 324 * uses only 16-byte PMK. 325 */ 326 res = eapol_sm_get_key(eapol, pmk, 16); 327 pmk_len = 16; 328 } 329 } 330 331 if (res) { 332 wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state " 333 "machines"); 334 return; 335 } 336 337 wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way " 338 "handshake", pmk, pmk_len); 339 340 if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk, 341 pmk_len)) { 342 wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver"); 343 } 344 345 wpa_supplicant_cancel_scan(wpa_s); 346 wpa_supplicant_cancel_auth_timeout(wpa_s); 347 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 348 349 } 350 351 352 static void wpa_supplicant_notify_eapol_done(void *ctx) 353 { 354 struct wpa_supplicant *wpa_s = ctx; 355 wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete"); 356 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 357 wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE); 358 } else { 359 wpa_supplicant_cancel_auth_timeout(wpa_s); 360 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 361 } 362 } 363 364 #endif /* IEEE8021X_EAPOL */ 365 366 367 #ifndef CONFIG_NO_WPA 368 369 static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s) 370 { 371 int ret = 0; 372 struct wpa_bss *curr = NULL, *bss; 373 struct wpa_ssid *ssid = wpa_s->current_ssid; 374 const u8 *ie; 375 376 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 377 if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0) 378 continue; 379 if (ssid == NULL || 380 ((bss->ssid_len == ssid->ssid_len && 381 os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) || 382 ssid->ssid_len == 0)) { 383 curr = bss; 384 break; 385 } 386 } 387 388 if (curr) { 389 ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE); 390 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) 391 ret = -1; 392 393 ie = wpa_bss_get_ie(curr, WLAN_EID_RSN); 394 if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) 395 ret = -1; 396 } else { 397 ret = -1; 398 } 399 400 return ret; 401 } 402 403 404 static int wpa_supplicant_get_beacon_ie(void *ctx) 405 { 406 struct wpa_supplicant *wpa_s = ctx; 407 if (wpa_get_beacon_ie(wpa_s) == 0) { 408 return 0; 409 } 410 411 /* No WPA/RSN IE found in the cached scan results. Try to get updated 412 * scan results from the driver. */ 413 if (wpa_supplicant_update_scan_results(wpa_s) < 0) 414 return -1; 415 416 return wpa_get_beacon_ie(wpa_s); 417 } 418 419 420 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type, 421 const void *data, u16 data_len, 422 size_t *msg_len, void **data_pos) 423 { 424 return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos); 425 } 426 427 428 static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto, 429 const u8 *buf, size_t len) 430 { 431 return wpa_ether_send(wpa_s, dest, proto, buf, len); 432 } 433 434 435 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s) 436 { 437 wpa_supplicant_cancel_auth_timeout(wpa_s); 438 } 439 440 441 static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state) 442 { 443 wpa_supplicant_set_state(wpa_s, state); 444 } 445 446 447 /** 448 * wpa_supplicant_get_state - Get the connection state 449 * @wpa_s: Pointer to wpa_supplicant data 450 * Returns: The current connection state (WPA_*) 451 */ 452 static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s) 453 { 454 return wpa_s->wpa_state; 455 } 456 457 458 static enum wpa_states _wpa_supplicant_get_state(void *wpa_s) 459 { 460 return wpa_supplicant_get_state(wpa_s); 461 } 462 463 464 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code) 465 { 466 wpa_supplicant_deauthenticate(wpa_s, reason_code); 467 /* Schedule a scan to make sure we continue looking for networks */ 468 wpa_supplicant_req_scan(wpa_s, 5, 0); 469 } 470 471 472 static void * wpa_supplicant_get_network_ctx(void *wpa_s) 473 { 474 return wpa_supplicant_get_ssid(wpa_s); 475 } 476 477 478 static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid) 479 { 480 struct wpa_supplicant *wpa_s = ctx; 481 return wpa_drv_get_bssid(wpa_s, bssid); 482 } 483 484 485 static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg, 486 const u8 *addr, int key_idx, int set_tx, 487 const u8 *seq, size_t seq_len, 488 const u8 *key, size_t key_len) 489 { 490 struct wpa_supplicant *wpa_s = _wpa_s; 491 if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) { 492 /* Clear the MIC error counter when setting a new PTK. */ 493 wpa_s->mic_errors_seen = 0; 494 } 495 #ifdef CONFIG_TESTING_GET_GTK 496 if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) && 497 alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) { 498 os_memcpy(wpa_s->last_gtk, key, key_len); 499 wpa_s->last_gtk_len = key_len; 500 } 501 #endif /* CONFIG_TESTING_GET_GTK */ 502 return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len, 503 key, key_len); 504 } 505 506 507 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr, 508 int protection_type, 509 int key_type) 510 { 511 return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type, 512 key_type); 513 } 514 515 516 static int wpa_supplicant_add_pmkid(void *wpa_s, 517 const u8 *bssid, const u8 *pmkid) 518 { 519 return wpa_drv_add_pmkid(wpa_s, bssid, pmkid); 520 } 521 522 523 static int wpa_supplicant_remove_pmkid(void *wpa_s, 524 const u8 *bssid, const u8 *pmkid) 525 { 526 return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid); 527 } 528 529 530 #ifdef CONFIG_IEEE80211R 531 static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md, 532 const u8 *ies, size_t ies_len) 533 { 534 struct wpa_supplicant *wpa_s = ctx; 535 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 536 return sme_update_ft_ies(wpa_s, md, ies, ies_len); 537 return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len); 538 } 539 540 541 static int wpa_supplicant_send_ft_action(void *ctx, u8 action, 542 const u8 *target_ap, 543 const u8 *ies, size_t ies_len) 544 { 545 struct wpa_supplicant *wpa_s = ctx; 546 int ret; 547 u8 *data, *pos; 548 size_t data_len; 549 550 if (action != 1) { 551 wpa_printf(MSG_ERROR, "Unsupported send_ft_action action %d", 552 action); 553 return -1; 554 } 555 556 /* 557 * Action frame payload: 558 * Category[1] = 6 (Fast BSS Transition) 559 * Action[1] = 1 (Fast BSS Transition Request) 560 * STA Address 561 * Target AP Address 562 * FT IEs 563 */ 564 565 data_len = 2 + 2 * ETH_ALEN + ies_len; 566 data = os_malloc(data_len); 567 if (data == NULL) 568 return -1; 569 pos = data; 570 *pos++ = 0x06; /* FT Action category */ 571 *pos++ = action; 572 os_memcpy(pos, wpa_s->own_addr, ETH_ALEN); 573 pos += ETH_ALEN; 574 os_memcpy(pos, target_ap, ETH_ALEN); 575 pos += ETH_ALEN; 576 os_memcpy(pos, ies, ies_len); 577 578 ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, 579 wpa_s->bssid, wpa_s->own_addr, wpa_s->bssid, 580 data, data_len, 0); 581 os_free(data); 582 583 return ret; 584 } 585 586 587 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap) 588 { 589 struct wpa_supplicant *wpa_s = ctx; 590 struct wpa_driver_auth_params params; 591 struct wpa_bss *bss; 592 593 bss = wpa_bss_get_bssid(wpa_s, target_ap); 594 if (bss == NULL) 595 return -1; 596 597 os_memset(¶ms, 0, sizeof(params)); 598 params.bssid = target_ap; 599 params.freq = bss->freq; 600 params.ssid = bss->ssid; 601 params.ssid_len = bss->ssid_len; 602 params.auth_alg = WPA_AUTH_ALG_FT; 603 params.local_state_change = 1; 604 return wpa_drv_authenticate(wpa_s, ¶ms); 605 } 606 #endif /* CONFIG_IEEE80211R */ 607 608 609 #ifdef CONFIG_TDLS 610 611 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported, 612 int *tdls_ext_setup, 613 int *tdls_chan_switch) 614 { 615 struct wpa_supplicant *wpa_s = ctx; 616 617 *tdls_supported = 0; 618 *tdls_ext_setup = 0; 619 *tdls_chan_switch = 0; 620 621 if (!wpa_s->drv_capa_known) 622 return -1; 623 624 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) 625 *tdls_supported = 1; 626 627 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP) 628 *tdls_ext_setup = 1; 629 630 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH) 631 *tdls_chan_switch = 1; 632 633 return 0; 634 } 635 636 637 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst, 638 u8 action_code, u8 dialog_token, 639 u16 status_code, u32 peer_capab, 640 int initiator, const u8 *buf, 641 size_t len) 642 { 643 struct wpa_supplicant *wpa_s = ctx; 644 return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token, 645 status_code, peer_capab, initiator, buf, 646 len); 647 } 648 649 650 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer) 651 { 652 struct wpa_supplicant *wpa_s = ctx; 653 return wpa_drv_tdls_oper(wpa_s, oper, peer); 654 } 655 656 657 static int wpa_supplicant_tdls_peer_addset( 658 void *ctx, const u8 *peer, int add, u16 aid, u16 capability, 659 const u8 *supp_rates, size_t supp_rates_len, 660 const struct ieee80211_ht_capabilities *ht_capab, 661 const struct ieee80211_vht_capabilities *vht_capab, 662 u8 qosinfo, int wmm, const u8 *ext_capab, size_t ext_capab_len, 663 const u8 *supp_channels, size_t supp_channels_len, 664 const u8 *supp_oper_classes, size_t supp_oper_classes_len) 665 { 666 struct wpa_supplicant *wpa_s = ctx; 667 struct hostapd_sta_add_params params; 668 669 os_memset(¶ms, 0, sizeof(params)); 670 671 params.addr = peer; 672 params.aid = aid; 673 params.capability = capability; 674 params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED; 675 676 /* 677 * Don't rely only on qosinfo for WMM capability. It may be 0 even when 678 * present. Allow the WMM IE to also indicate QoS support. 679 */ 680 if (wmm || qosinfo) 681 params.flags |= WPA_STA_WMM; 682 683 params.ht_capabilities = ht_capab; 684 params.vht_capabilities = vht_capab; 685 params.qosinfo = qosinfo; 686 params.listen_interval = 0; 687 params.supp_rates = supp_rates; 688 params.supp_rates_len = supp_rates_len; 689 params.set = !add; 690 params.ext_capab = ext_capab; 691 params.ext_capab_len = ext_capab_len; 692 params.supp_channels = supp_channels; 693 params.supp_channels_len = supp_channels_len; 694 params.supp_oper_classes = supp_oper_classes; 695 params.supp_oper_classes_len = supp_oper_classes_len; 696 697 return wpa_drv_sta_add(wpa_s, ¶ms); 698 } 699 700 701 static int wpa_supplicant_tdls_enable_channel_switch( 702 void *ctx, const u8 *addr, u8 oper_class, 703 const struct hostapd_freq_params *params) 704 { 705 struct wpa_supplicant *wpa_s = ctx; 706 707 return wpa_drv_tdls_enable_channel_switch(wpa_s, addr, oper_class, 708 params); 709 } 710 711 712 static int wpa_supplicant_tdls_disable_channel_switch(void *ctx, const u8 *addr) 713 { 714 struct wpa_supplicant *wpa_s = ctx; 715 716 return wpa_drv_tdls_disable_channel_switch(wpa_s, addr); 717 } 718 719 #endif /* CONFIG_TDLS */ 720 721 #endif /* CONFIG_NO_WPA */ 722 723 724 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field) 725 { 726 if (os_strcmp(field, "IDENTITY") == 0) 727 return WPA_CTRL_REQ_EAP_IDENTITY; 728 else if (os_strcmp(field, "PASSWORD") == 0) 729 return WPA_CTRL_REQ_EAP_PASSWORD; 730 else if (os_strcmp(field, "NEW_PASSWORD") == 0) 731 return WPA_CTRL_REQ_EAP_NEW_PASSWORD; 732 else if (os_strcmp(field, "PIN") == 0) 733 return WPA_CTRL_REQ_EAP_PIN; 734 else if (os_strcmp(field, "OTP") == 0) 735 return WPA_CTRL_REQ_EAP_OTP; 736 else if (os_strcmp(field, "PASSPHRASE") == 0) 737 return WPA_CTRL_REQ_EAP_PASSPHRASE; 738 else if (os_strcmp(field, "SIM") == 0) 739 return WPA_CTRL_REQ_SIM; 740 else if (os_strcmp(field, "PSK_PASSPHRASE") == 0) 741 return WPA_CTRL_REQ_PSK_PASSPHRASE; 742 else if (os_strcmp(field, "EXT_CERT_CHECK") == 0) 743 return WPA_CTRL_REQ_EXT_CERT_CHECK; 744 return WPA_CTRL_REQ_UNKNOWN; 745 } 746 747 748 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field, 749 const char *default_txt, 750 const char **txt) 751 { 752 const char *ret = NULL; 753 754 *txt = default_txt; 755 756 switch (field) { 757 case WPA_CTRL_REQ_EAP_IDENTITY: 758 *txt = "Identity"; 759 ret = "IDENTITY"; 760 break; 761 case WPA_CTRL_REQ_EAP_PASSWORD: 762 *txt = "Password"; 763 ret = "PASSWORD"; 764 break; 765 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 766 *txt = "New Password"; 767 ret = "NEW_PASSWORD"; 768 break; 769 case WPA_CTRL_REQ_EAP_PIN: 770 *txt = "PIN"; 771 ret = "PIN"; 772 break; 773 case WPA_CTRL_REQ_EAP_OTP: 774 ret = "OTP"; 775 break; 776 case WPA_CTRL_REQ_EAP_PASSPHRASE: 777 *txt = "Private key passphrase"; 778 ret = "PASSPHRASE"; 779 break; 780 case WPA_CTRL_REQ_SIM: 781 ret = "SIM"; 782 break; 783 case WPA_CTRL_REQ_PSK_PASSPHRASE: 784 *txt = "PSK or passphrase"; 785 ret = "PSK_PASSPHRASE"; 786 break; 787 case WPA_CTRL_REQ_EXT_CERT_CHECK: 788 *txt = "External server certificate validation"; 789 ret = "EXT_CERT_CHECK"; 790 break; 791 default: 792 break; 793 } 794 795 /* txt needs to be something */ 796 if (*txt == NULL) { 797 wpa_printf(MSG_WARNING, "No message for request %d", field); 798 ret = NULL; 799 } 800 801 return ret; 802 } 803 804 805 void wpas_send_ctrl_req(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, 806 const char *field_name, const char *txt) 807 { 808 char *buf; 809 size_t buflen; 810 int len; 811 812 buflen = 100 + os_strlen(txt) + ssid->ssid_len; 813 buf = os_malloc(buflen); 814 if (buf == NULL) 815 return; 816 len = os_snprintf(buf, buflen, "%s-%d:%s needed for SSID ", 817 field_name, ssid->id, txt); 818 if (os_snprintf_error(buflen, len)) { 819 os_free(buf); 820 return; 821 } 822 if (ssid->ssid && buflen > len + ssid->ssid_len) { 823 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len); 824 len += ssid->ssid_len; 825 buf[len] = '\0'; 826 } 827 buf[buflen - 1] = '\0'; 828 wpa_msg(wpa_s, MSG_INFO, WPA_CTRL_REQ "%s", buf); 829 os_free(buf); 830 } 831 832 833 #ifdef IEEE8021X_EAPOL 834 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 835 static void wpa_supplicant_eap_param_needed(void *ctx, 836 enum wpa_ctrl_req_type field, 837 const char *default_txt) 838 { 839 struct wpa_supplicant *wpa_s = ctx; 840 struct wpa_ssid *ssid = wpa_s->current_ssid; 841 const char *field_name, *txt = NULL; 842 843 if (ssid == NULL) 844 return; 845 846 if (field == WPA_CTRL_REQ_EXT_CERT_CHECK) 847 ssid->eap.pending_ext_cert_check = PENDING_CHECK; 848 wpas_notify_network_request(wpa_s, ssid, field, default_txt); 849 850 field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt, 851 &txt); 852 if (field_name == NULL) { 853 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed", 854 field); 855 return; 856 } 857 858 wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name); 859 860 wpas_send_ctrl_req(wpa_s, ssid, field_name, txt); 861 } 862 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 863 #define wpa_supplicant_eap_param_needed NULL 864 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 865 866 867 #ifdef CONFIG_EAP_PROXY 868 static void wpa_supplicant_eap_proxy_cb(void *ctx) 869 { 870 struct wpa_supplicant *wpa_s = ctx; 871 size_t len; 872 873 wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol, 874 wpa_s->imsi, &len); 875 if (wpa_s->mnc_len > 0) { 876 wpa_s->imsi[len] = '\0'; 877 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)", 878 wpa_s->imsi, wpa_s->mnc_len); 879 } else { 880 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available"); 881 } 882 } 883 #endif /* CONFIG_EAP_PROXY */ 884 885 886 static void wpa_supplicant_port_cb(void *ctx, int authorized) 887 { 888 struct wpa_supplicant *wpa_s = ctx; 889 #ifdef CONFIG_AP 890 if (wpa_s->ap_iface) { 891 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant " 892 "port status: %s", 893 authorized ? "Authorized" : "Unauthorized"); 894 return; 895 } 896 #endif /* CONFIG_AP */ 897 wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s", 898 authorized ? "Authorized" : "Unauthorized"); 899 wpa_drv_set_supp_port(wpa_s, authorized); 900 } 901 902 903 static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject, 904 const char *altsubject[], int num_altsubject, 905 const char *cert_hash, 906 const struct wpabuf *cert) 907 { 908 struct wpa_supplicant *wpa_s = ctx; 909 910 wpas_notify_certification(wpa_s, depth, subject, altsubject, 911 num_altsubject, cert_hash, cert); 912 } 913 914 915 static void wpa_supplicant_status_cb(void *ctx, const char *status, 916 const char *parameter) 917 { 918 struct wpa_supplicant *wpa_s = ctx; 919 920 wpas_notify_eap_status(wpa_s, status, parameter); 921 } 922 923 924 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len) 925 { 926 struct wpa_supplicant *wpa_s = ctx; 927 char *str; 928 int res; 929 930 wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity", 931 id, len); 932 933 if (wpa_s->current_ssid == NULL) 934 return; 935 936 if (id == NULL) { 937 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 938 "NULL", 0) < 0) 939 return; 940 } else { 941 str = os_malloc(len * 2 + 1); 942 if (str == NULL) 943 return; 944 wpa_snprintf_hex(str, len * 2 + 1, id, len); 945 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 946 str, 0); 947 os_free(str); 948 if (res < 0) 949 return; 950 } 951 952 if (wpa_s->conf->update_config) { 953 res = wpa_config_write(wpa_s->confname, wpa_s->conf); 954 if (res) { 955 wpa_printf(MSG_DEBUG, "Failed to update config after " 956 "anonymous_id update"); 957 } 958 } 959 } 960 #endif /* IEEE8021X_EAPOL */ 961 962 963 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s) 964 { 965 #ifdef IEEE8021X_EAPOL 966 struct eapol_ctx *ctx; 967 ctx = os_zalloc(sizeof(*ctx)); 968 if (ctx == NULL) { 969 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context."); 970 return -1; 971 } 972 973 ctx->ctx = wpa_s; 974 ctx->msg_ctx = wpa_s; 975 ctx->eapol_send_ctx = wpa_s; 976 ctx->preauth = 0; 977 ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done; 978 ctx->eapol_send = wpa_supplicant_eapol_send; 979 ctx->set_wep_key = wpa_eapol_set_wep_key; 980 #ifndef CONFIG_NO_CONFIG_BLOBS 981 ctx->set_config_blob = wpa_supplicant_set_config_blob; 982 ctx->get_config_blob = wpa_supplicant_get_config_blob; 983 #endif /* CONFIG_NO_CONFIG_BLOBS */ 984 ctx->aborted_cached = wpa_supplicant_aborted_cached; 985 ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path; 986 ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path; 987 ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path; 988 ctx->openssl_ciphers = wpa_s->conf->openssl_ciphers; 989 ctx->wps = wpa_s->wps; 990 ctx->eap_param_needed = wpa_supplicant_eap_param_needed; 991 #ifdef CONFIG_EAP_PROXY 992 ctx->eap_proxy_cb = wpa_supplicant_eap_proxy_cb; 993 #endif /* CONFIG_EAP_PROXY */ 994 ctx->port_cb = wpa_supplicant_port_cb; 995 ctx->cb = wpa_supplicant_eapol_cb; 996 ctx->cert_cb = wpa_supplicant_cert_cb; 997 ctx->cert_in_cb = wpa_s->conf->cert_in_cb; 998 ctx->status_cb = wpa_supplicant_status_cb; 999 ctx->set_anon_id = wpa_supplicant_set_anon_id; 1000 ctx->cb_ctx = wpa_s; 1001 wpa_s->eapol = eapol_sm_init(ctx); 1002 if (wpa_s->eapol == NULL) { 1003 os_free(ctx); 1004 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state " 1005 "machines."); 1006 return -1; 1007 } 1008 #endif /* IEEE8021X_EAPOL */ 1009 1010 return 0; 1011 } 1012 1013 1014 #ifndef CONFIG_NO_WPA 1015 static void wpa_supplicant_set_rekey_offload(void *ctx, 1016 const u8 *kek, size_t kek_len, 1017 const u8 *kck, size_t kck_len, 1018 const u8 *replay_ctr) 1019 { 1020 struct wpa_supplicant *wpa_s = ctx; 1021 1022 wpa_drv_set_rekey_info(wpa_s, kek, kek_len, kck, kck_len, replay_ctr); 1023 } 1024 1025 1026 static int wpa_supplicant_key_mgmt_set_pmk(void *ctx, const u8 *pmk, 1027 size_t pmk_len) 1028 { 1029 struct wpa_supplicant *wpa_s = ctx; 1030 1031 if (wpa_s->conf->key_mgmt_offload && 1032 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD)) 1033 return wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, 1034 NULL, 0, pmk, pmk_len); 1035 else 1036 return 0; 1037 } 1038 #endif /* CONFIG_NO_WPA */ 1039 1040 1041 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s) 1042 { 1043 #ifndef CONFIG_NO_WPA 1044 struct wpa_sm_ctx *ctx; 1045 ctx = os_zalloc(sizeof(*ctx)); 1046 if (ctx == NULL) { 1047 wpa_printf(MSG_ERROR, "Failed to allocate WPA context."); 1048 return -1; 1049 } 1050 1051 ctx->ctx = wpa_s; 1052 ctx->msg_ctx = wpa_s; 1053 ctx->set_state = _wpa_supplicant_set_state; 1054 ctx->get_state = _wpa_supplicant_get_state; 1055 ctx->deauthenticate = _wpa_supplicant_deauthenticate; 1056 ctx->set_key = wpa_supplicant_set_key; 1057 ctx->get_network_ctx = wpa_supplicant_get_network_ctx; 1058 ctx->get_bssid = wpa_supplicant_get_bssid; 1059 ctx->ether_send = _wpa_ether_send; 1060 ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie; 1061 ctx->alloc_eapol = _wpa_alloc_eapol; 1062 ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout; 1063 ctx->add_pmkid = wpa_supplicant_add_pmkid; 1064 ctx->remove_pmkid = wpa_supplicant_remove_pmkid; 1065 #ifndef CONFIG_NO_CONFIG_BLOBS 1066 ctx->set_config_blob = wpa_supplicant_set_config_blob; 1067 ctx->get_config_blob = wpa_supplicant_get_config_blob; 1068 #endif /* CONFIG_NO_CONFIG_BLOBS */ 1069 ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection; 1070 #ifdef CONFIG_IEEE80211R 1071 ctx->update_ft_ies = wpa_supplicant_update_ft_ies; 1072 ctx->send_ft_action = wpa_supplicant_send_ft_action; 1073 ctx->mark_authenticated = wpa_supplicant_mark_authenticated; 1074 #endif /* CONFIG_IEEE80211R */ 1075 #ifdef CONFIG_TDLS 1076 ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa; 1077 ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt; 1078 ctx->tdls_oper = wpa_supplicant_tdls_oper; 1079 ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset; 1080 ctx->tdls_enable_channel_switch = 1081 wpa_supplicant_tdls_enable_channel_switch; 1082 ctx->tdls_disable_channel_switch = 1083 wpa_supplicant_tdls_disable_channel_switch; 1084 #endif /* CONFIG_TDLS */ 1085 ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload; 1086 ctx->key_mgmt_set_pmk = wpa_supplicant_key_mgmt_set_pmk; 1087 1088 wpa_s->wpa = wpa_sm_init(ctx); 1089 if (wpa_s->wpa == NULL) { 1090 wpa_printf(MSG_ERROR, "Failed to initialize WPA state " 1091 "machine"); 1092 os_free(ctx); 1093 return -1; 1094 } 1095 #endif /* CONFIG_NO_WPA */ 1096 1097 return 0; 1098 } 1099 1100 1101 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s, 1102 struct wpa_ssid *ssid) 1103 { 1104 struct rsn_supp_config conf; 1105 if (ssid) { 1106 os_memset(&conf, 0, sizeof(conf)); 1107 conf.network_ctx = ssid; 1108 conf.peerkey_enabled = ssid->peerkey; 1109 conf.allowed_pairwise_cipher = ssid->pairwise_cipher; 1110 #ifdef IEEE8021X_EAPOL 1111 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ? 1112 wpa_s->conf->okc : ssid->proactive_key_caching; 1113 conf.eap_workaround = ssid->eap_workaround; 1114 conf.eap_conf_ctx = &ssid->eap; 1115 #endif /* IEEE8021X_EAPOL */ 1116 conf.ssid = ssid->ssid; 1117 conf.ssid_len = ssid->ssid_len; 1118 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey; 1119 #ifdef CONFIG_P2P 1120 if (ssid->p2p_group && wpa_s->current_bss && 1121 !wpa_s->p2p_disable_ip_addr_req) { 1122 struct wpabuf *p2p; 1123 p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss, 1124 P2P_IE_VENDOR_TYPE); 1125 if (p2p) { 1126 u8 group_capab; 1127 group_capab = p2p_get_group_capab(p2p); 1128 if (group_capab & 1129 P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION) 1130 conf.p2p = 1; 1131 wpabuf_free(p2p); 1132 } 1133 } 1134 #endif /* CONFIG_P2P */ 1135 conf.wpa_rsc_relaxation = wpa_s->conf->wpa_rsc_relaxation; 1136 } 1137 wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL); 1138 } 1139
