1 /* 2 * WPA Supplicant - Glue code to setup EAPOL and RSN modules 3 * Copyright (c) 2003-2012, 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 if (wpa_s->l2) { 100 return l2_packet_send(wpa_s->l2, dest, proto, buf, len); 101 } 102 103 return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len); 104 } 105 #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */ 106 107 108 #ifdef IEEE8021X_EAPOL 109 110 /** 111 * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator 112 * @ctx: Pointer to wpa_supplicant data (wpa_s) 113 * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*) 114 * @buf: EAPOL payload (after IEEE 802.1X header) 115 * @len: EAPOL payload length 116 * Returns: >=0 on success, <0 on failure 117 * 118 * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame 119 * to the current Authenticator. 120 */ 121 static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf, 122 size_t len) 123 { 124 struct wpa_supplicant *wpa_s = ctx; 125 u8 *msg, *dst, bssid[ETH_ALEN]; 126 size_t msglen; 127 int res; 128 129 /* TODO: could add l2_packet_sendmsg that allows fragments to avoid 130 * extra copy here */ 131 132 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || 133 wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) { 134 /* Current SSID is not using IEEE 802.1X/EAP, so drop possible 135 * EAPOL frames (mainly, EAPOL-Start) from EAPOL state 136 * machines. */ 137 wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X " 138 "mode (type=%d len=%lu)", type, 139 (unsigned long) len); 140 return -1; 141 } 142 143 if (pmksa_cache_get_current(wpa_s->wpa) && 144 type == IEEE802_1X_TYPE_EAPOL_START) { 145 /* Trying to use PMKSA caching - do not send EAPOL-Start frames 146 * since they will trigger full EAPOL authentication. */ 147 wpa_printf(MSG_DEBUG, "RSN: PMKSA caching - do not send " 148 "EAPOL-Start"); 149 return -1; 150 } 151 152 if (is_zero_ether_addr(wpa_s->bssid)) { 153 wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an " 154 "EAPOL frame"); 155 if (wpa_drv_get_bssid(wpa_s, bssid) == 0 && 156 !is_zero_ether_addr(bssid)) { 157 dst = bssid; 158 wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR 159 " from the driver as the EAPOL destination", 160 MAC2STR(dst)); 161 } else { 162 dst = wpa_s->last_eapol_src; 163 wpa_printf(MSG_DEBUG, "Using the source address of the" 164 " last received EAPOL frame " MACSTR " as " 165 "the EAPOL destination", 166 MAC2STR(dst)); 167 } 168 } else { 169 /* BSSID was already set (from (Re)Assoc event, so use it as 170 * the EAPOL destination. */ 171 dst = wpa_s->bssid; 172 } 173 174 msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL); 175 if (msg == NULL) 176 return -1; 177 178 wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst)); 179 wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen); 180 res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen); 181 os_free(msg); 182 return res; 183 } 184 185 186 /** 187 * wpa_eapol_set_wep_key - set WEP key for the driver 188 * @ctx: Pointer to wpa_supplicant data (wpa_s) 189 * @unicast: 1 = individual unicast key, 0 = broadcast key 190 * @keyidx: WEP key index (0..3) 191 * @key: Pointer to key data 192 * @keylen: Key length in bytes 193 * Returns: 0 on success or < 0 on error. 194 */ 195 static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx, 196 const u8 *key, size_t keylen) 197 { 198 struct wpa_supplicant *wpa_s = ctx; 199 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 200 int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 : 201 WPA_CIPHER_WEP104; 202 if (unicast) 203 wpa_s->pairwise_cipher = cipher; 204 else 205 wpa_s->group_cipher = cipher; 206 } 207 return wpa_drv_set_key(wpa_s, WPA_ALG_WEP, 208 unicast ? wpa_s->bssid : NULL, 209 keyidx, unicast, NULL, 0, key, keylen); 210 } 211 212 213 static void wpa_supplicant_aborted_cached(void *ctx) 214 { 215 struct wpa_supplicant *wpa_s = ctx; 216 wpa_sm_aborted_cached(wpa_s->wpa); 217 } 218 219 220 static const char * result_str(enum eapol_supp_result result) 221 { 222 switch (result) { 223 case EAPOL_SUPP_RESULT_FAILURE: 224 return "FAILURE"; 225 case EAPOL_SUPP_RESULT_SUCCESS: 226 return "SUCCESS"; 227 case EAPOL_SUPP_RESULT_EXPECTED_FAILURE: 228 return "EXPECTED_FAILURE"; 229 } 230 return "?"; 231 } 232 233 234 static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, 235 enum eapol_supp_result result, 236 void *ctx) 237 { 238 struct wpa_supplicant *wpa_s = ctx; 239 int res, pmk_len; 240 u8 pmk[PMK_LEN]; 241 242 wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s", 243 result_str(result)); 244 245 if (wpas_wps_eapol_cb(wpa_s) > 0) 246 return; 247 248 wpa_s->eap_expected_failure = result == 249 EAPOL_SUPP_RESULT_EXPECTED_FAILURE; 250 251 if (result != EAPOL_SUPP_RESULT_SUCCESS) { 252 /* 253 * Make sure we do not get stuck here waiting for long EAPOL 254 * timeout if the AP does not disconnect in case of 255 * authentication failure. 256 */ 257 wpa_supplicant_req_auth_timeout(wpa_s, 2, 0); 258 } else { 259 ieee802_1x_notify_create_actor(wpa_s, wpa_s->last_eapol_src); 260 } 261 262 if (result != EAPOL_SUPP_RESULT_SUCCESS || 263 !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)) 264 return; 265 266 if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) 267 return; 268 269 wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way " 270 "handshake"); 271 272 pmk_len = PMK_LEN; 273 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) { 274 #ifdef CONFIG_IEEE80211R 275 u8 buf[2 * PMK_LEN]; 276 wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for " 277 "driver-based 4-way hs and FT"); 278 res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN); 279 if (res == 0) { 280 os_memcpy(pmk, buf + PMK_LEN, PMK_LEN); 281 os_memset(buf, 0, sizeof(buf)); 282 } 283 #else /* CONFIG_IEEE80211R */ 284 res = -1; 285 #endif /* CONFIG_IEEE80211R */ 286 } else { 287 res = eapol_sm_get_key(eapol, pmk, PMK_LEN); 288 if (res) { 289 /* 290 * EAP-LEAP is an exception from other EAP methods: it 291 * uses only 16-byte PMK. 292 */ 293 res = eapol_sm_get_key(eapol, pmk, 16); 294 pmk_len = 16; 295 } 296 } 297 298 if (res) { 299 wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state " 300 "machines"); 301 return; 302 } 303 304 wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way " 305 "handshake", pmk, pmk_len); 306 307 if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk, 308 pmk_len)) { 309 wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver"); 310 } 311 312 wpa_supplicant_cancel_scan(wpa_s); 313 wpa_supplicant_cancel_auth_timeout(wpa_s); 314 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 315 316 } 317 318 319 static void wpa_supplicant_notify_eapol_done(void *ctx) 320 { 321 struct wpa_supplicant *wpa_s = ctx; 322 wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete"); 323 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) { 324 wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE); 325 } else { 326 wpa_supplicant_cancel_auth_timeout(wpa_s); 327 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); 328 } 329 } 330 331 #endif /* IEEE8021X_EAPOL */ 332 333 334 #ifndef CONFIG_NO_WPA 335 336 static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s) 337 { 338 int ret = 0; 339 struct wpa_bss *curr = NULL, *bss; 340 struct wpa_ssid *ssid = wpa_s->current_ssid; 341 const u8 *ie; 342 343 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 344 if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0) 345 continue; 346 if (ssid == NULL || 347 ((bss->ssid_len == ssid->ssid_len && 348 os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) || 349 ssid->ssid_len == 0)) { 350 curr = bss; 351 break; 352 } 353 } 354 355 if (curr) { 356 ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE); 357 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) 358 ret = -1; 359 360 ie = wpa_bss_get_ie(curr, WLAN_EID_RSN); 361 if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) 362 ret = -1; 363 } else { 364 ret = -1; 365 } 366 367 return ret; 368 } 369 370 371 static int wpa_supplicant_get_beacon_ie(void *ctx) 372 { 373 struct wpa_supplicant *wpa_s = ctx; 374 if (wpa_get_beacon_ie(wpa_s) == 0) { 375 return 0; 376 } 377 378 /* No WPA/RSN IE found in the cached scan results. Try to get updated 379 * scan results from the driver. */ 380 if (wpa_supplicant_update_scan_results(wpa_s) < 0) 381 return -1; 382 383 return wpa_get_beacon_ie(wpa_s); 384 } 385 386 387 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type, 388 const void *data, u16 data_len, 389 size_t *msg_len, void **data_pos) 390 { 391 return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos); 392 } 393 394 395 static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto, 396 const u8 *buf, size_t len) 397 { 398 return wpa_ether_send(wpa_s, dest, proto, buf, len); 399 } 400 401 402 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s) 403 { 404 wpa_supplicant_cancel_auth_timeout(wpa_s); 405 } 406 407 408 static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state) 409 { 410 wpa_supplicant_set_state(wpa_s, state); 411 } 412 413 414 /** 415 * wpa_supplicant_get_state - Get the connection state 416 * @wpa_s: Pointer to wpa_supplicant data 417 * Returns: The current connection state (WPA_*) 418 */ 419 static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s) 420 { 421 return wpa_s->wpa_state; 422 } 423 424 425 static enum wpa_states _wpa_supplicant_get_state(void *wpa_s) 426 { 427 return wpa_supplicant_get_state(wpa_s); 428 } 429 430 431 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code) 432 { 433 wpa_supplicant_deauthenticate(wpa_s, reason_code); 434 /* Schedule a scan to make sure we continue looking for networks */ 435 wpa_supplicant_req_scan(wpa_s, 5, 0); 436 } 437 438 439 static void * wpa_supplicant_get_network_ctx(void *wpa_s) 440 { 441 return wpa_supplicant_get_ssid(wpa_s); 442 } 443 444 445 static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid) 446 { 447 struct wpa_supplicant *wpa_s = ctx; 448 return wpa_drv_get_bssid(wpa_s, bssid); 449 } 450 451 452 static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg, 453 const u8 *addr, int key_idx, int set_tx, 454 const u8 *seq, size_t seq_len, 455 const u8 *key, size_t key_len) 456 { 457 struct wpa_supplicant *wpa_s = _wpa_s; 458 if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) { 459 /* Clear the MIC error counter when setting a new PTK. */ 460 wpa_s->mic_errors_seen = 0; 461 } 462 #ifdef CONFIG_TESTING_GET_GTK 463 if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) && 464 alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) { 465 os_memcpy(wpa_s->last_gtk, key, key_len); 466 wpa_s->last_gtk_len = key_len; 467 } 468 #endif /* CONFIG_TESTING_GET_GTK */ 469 return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len, 470 key, key_len); 471 } 472 473 474 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr, 475 int protection_type, 476 int key_type) 477 { 478 return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type, 479 key_type); 480 } 481 482 483 static int wpa_supplicant_add_pmkid(void *wpa_s, 484 const u8 *bssid, const u8 *pmkid) 485 { 486 return wpa_drv_add_pmkid(wpa_s, bssid, pmkid); 487 } 488 489 490 static int wpa_supplicant_remove_pmkid(void *wpa_s, 491 const u8 *bssid, const u8 *pmkid) 492 { 493 return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid); 494 } 495 496 497 #ifdef CONFIG_IEEE80211R 498 static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md, 499 const u8 *ies, size_t ies_len) 500 { 501 struct wpa_supplicant *wpa_s = ctx; 502 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) 503 return sme_update_ft_ies(wpa_s, md, ies, ies_len); 504 return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len); 505 } 506 507 508 static int wpa_supplicant_send_ft_action(void *ctx, u8 action, 509 const u8 *target_ap, 510 const u8 *ies, size_t ies_len) 511 { 512 struct wpa_supplicant *wpa_s = ctx; 513 return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len); 514 } 515 516 517 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap) 518 { 519 struct wpa_supplicant *wpa_s = ctx; 520 struct wpa_driver_auth_params params; 521 struct wpa_bss *bss; 522 523 bss = wpa_bss_get_bssid(wpa_s, target_ap); 524 if (bss == NULL) 525 return -1; 526 527 os_memset(¶ms, 0, sizeof(params)); 528 params.bssid = target_ap; 529 params.freq = bss->freq; 530 params.ssid = bss->ssid; 531 params.ssid_len = bss->ssid_len; 532 params.auth_alg = WPA_AUTH_ALG_FT; 533 params.local_state_change = 1; 534 return wpa_drv_authenticate(wpa_s, ¶ms); 535 } 536 #endif /* CONFIG_IEEE80211R */ 537 538 539 #ifdef CONFIG_TDLS 540 541 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported, 542 int *tdls_ext_setup) 543 { 544 struct wpa_supplicant *wpa_s = ctx; 545 546 *tdls_supported = 0; 547 *tdls_ext_setup = 0; 548 549 if (!wpa_s->drv_capa_known) 550 return -1; 551 552 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT) 553 *tdls_supported = 1; 554 555 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP) 556 *tdls_ext_setup = 1; 557 558 return 0; 559 } 560 561 562 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst, 563 u8 action_code, u8 dialog_token, 564 u16 status_code, u32 peer_capab, 565 const u8 *buf, size_t len) 566 { 567 struct wpa_supplicant *wpa_s = ctx; 568 return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token, 569 status_code, peer_capab, buf, len); 570 } 571 572 573 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer) 574 { 575 struct wpa_supplicant *wpa_s = ctx; 576 return wpa_drv_tdls_oper(wpa_s, oper, peer); 577 } 578 579 580 static int wpa_supplicant_tdls_peer_addset( 581 void *ctx, const u8 *peer, int add, u16 aid, u16 capability, 582 const u8 *supp_rates, size_t supp_rates_len, 583 const struct ieee80211_ht_capabilities *ht_capab, 584 const struct ieee80211_vht_capabilities *vht_capab, 585 u8 qosinfo, const u8 *ext_capab, size_t ext_capab_len, 586 const u8 *supp_channels, size_t supp_channels_len, 587 const u8 *supp_oper_classes, size_t supp_oper_classes_len) 588 { 589 struct wpa_supplicant *wpa_s = ctx; 590 struct hostapd_sta_add_params params; 591 592 os_memset(¶ms, 0, sizeof(params)); 593 594 params.addr = peer; 595 params.aid = aid; 596 params.capability = capability; 597 params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED; 598 599 /* 600 * TDLS Setup frames do not contain WMM IEs, hence need to depend on 601 * qosinfo to check if the peer is WMM capable. 602 */ 603 if (qosinfo) 604 params.flags |= WPA_STA_WMM; 605 606 params.ht_capabilities = ht_capab; 607 params.vht_capabilities = vht_capab; 608 params.qosinfo = qosinfo; 609 params.listen_interval = 0; 610 params.supp_rates = supp_rates; 611 params.supp_rates_len = supp_rates_len; 612 params.set = !add; 613 params.ext_capab = ext_capab; 614 params.ext_capab_len = ext_capab_len; 615 params.supp_channels = supp_channels; 616 params.supp_channels_len = supp_channels_len; 617 params.supp_oper_classes = supp_oper_classes; 618 params.supp_oper_classes_len = supp_oper_classes_len; 619 620 return wpa_drv_sta_add(wpa_s, ¶ms); 621 } 622 623 #endif /* CONFIG_TDLS */ 624 625 #endif /* CONFIG_NO_WPA */ 626 627 628 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field) 629 { 630 if (os_strcmp(field, "IDENTITY") == 0) 631 return WPA_CTRL_REQ_EAP_IDENTITY; 632 else if (os_strcmp(field, "PASSWORD") == 0) 633 return WPA_CTRL_REQ_EAP_PASSWORD; 634 else if (os_strcmp(field, "NEW_PASSWORD") == 0) 635 return WPA_CTRL_REQ_EAP_NEW_PASSWORD; 636 else if (os_strcmp(field, "PIN") == 0) 637 return WPA_CTRL_REQ_EAP_PIN; 638 else if (os_strcmp(field, "OTP") == 0) 639 return WPA_CTRL_REQ_EAP_OTP; 640 else if (os_strcmp(field, "PASSPHRASE") == 0) 641 return WPA_CTRL_REQ_EAP_PASSPHRASE; 642 else if (os_strcmp(field, "SIM") == 0) 643 return WPA_CTRL_REQ_SIM; 644 return WPA_CTRL_REQ_UNKNOWN; 645 } 646 647 648 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field, 649 const char *default_txt, 650 const char **txt) 651 { 652 const char *ret = NULL; 653 654 *txt = default_txt; 655 656 switch (field) { 657 case WPA_CTRL_REQ_EAP_IDENTITY: 658 *txt = "Identity"; 659 ret = "IDENTITY"; 660 break; 661 case WPA_CTRL_REQ_EAP_PASSWORD: 662 *txt = "Password"; 663 ret = "PASSWORD"; 664 break; 665 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 666 *txt = "New Password"; 667 ret = "NEW_PASSWORD"; 668 break; 669 case WPA_CTRL_REQ_EAP_PIN: 670 *txt = "PIN"; 671 ret = "PIN"; 672 break; 673 case WPA_CTRL_REQ_EAP_OTP: 674 ret = "OTP"; 675 break; 676 case WPA_CTRL_REQ_EAP_PASSPHRASE: 677 *txt = "Private key passphrase"; 678 ret = "PASSPHRASE"; 679 break; 680 case WPA_CTRL_REQ_SIM: 681 ret = "SIM"; 682 break; 683 default: 684 break; 685 } 686 687 /* txt needs to be something */ 688 if (*txt == NULL) { 689 wpa_printf(MSG_WARNING, "No message for request %d", field); 690 ret = NULL; 691 } 692 693 return ret; 694 } 695 696 #ifdef IEEE8021X_EAPOL 697 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 698 static void wpa_supplicant_eap_param_needed(void *ctx, 699 enum wpa_ctrl_req_type field, 700 const char *default_txt) 701 { 702 struct wpa_supplicant *wpa_s = ctx; 703 struct wpa_ssid *ssid = wpa_s->current_ssid; 704 const char *field_name, *txt = NULL; 705 char *buf; 706 size_t buflen; 707 int len; 708 709 if (ssid == NULL) 710 return; 711 712 wpas_notify_network_request(wpa_s, ssid, field, default_txt); 713 714 field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt, 715 &txt); 716 if (field_name == NULL) { 717 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed", 718 field); 719 return; 720 } 721 722 wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name); 723 724 buflen = 100 + os_strlen(txt) + ssid->ssid_len; 725 buf = os_malloc(buflen); 726 if (buf == NULL) 727 return; 728 len = os_snprintf(buf, buflen, 729 WPA_CTRL_REQ "%s-%d:%s needed for SSID ", 730 field_name, ssid->id, txt); 731 if (len < 0 || (size_t) len >= buflen) { 732 os_free(buf); 733 return; 734 } 735 if (ssid->ssid && buflen > len + ssid->ssid_len) { 736 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len); 737 len += ssid->ssid_len; 738 buf[len] = '\0'; 739 } 740 buf[buflen - 1] = '\0'; 741 wpa_msg(wpa_s, MSG_INFO, "%s", buf); 742 os_free(buf); 743 } 744 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 745 #define wpa_supplicant_eap_param_needed NULL 746 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 747 748 749 static void wpa_supplicant_port_cb(void *ctx, int authorized) 750 { 751 struct wpa_supplicant *wpa_s = ctx; 752 #ifdef CONFIG_AP 753 if (wpa_s->ap_iface) { 754 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant " 755 "port status: %s", 756 authorized ? "Authorized" : "Unauthorized"); 757 return; 758 } 759 #endif /* CONFIG_AP */ 760 wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s", 761 authorized ? "Authorized" : "Unauthorized"); 762 wpa_drv_set_supp_port(wpa_s, authorized); 763 } 764 765 766 static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject, 767 const char *cert_hash, 768 const struct wpabuf *cert) 769 { 770 struct wpa_supplicant *wpa_s = ctx; 771 772 wpas_notify_certification(wpa_s, depth, subject, cert_hash, cert); 773 } 774 775 776 static void wpa_supplicant_status_cb(void *ctx, const char *status, 777 const char *parameter) 778 { 779 struct wpa_supplicant *wpa_s = ctx; 780 781 wpas_notify_eap_status(wpa_s, status, parameter); 782 } 783 784 785 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len) 786 { 787 struct wpa_supplicant *wpa_s = ctx; 788 char *str; 789 int res; 790 791 wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity", 792 id, len); 793 794 if (wpa_s->current_ssid == NULL) 795 return; 796 797 if (id == NULL) { 798 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 799 "NULL", 0) < 0) 800 return; 801 } else { 802 str = os_malloc(len * 2 + 1); 803 if (str == NULL) 804 return; 805 wpa_snprintf_hex(str, len * 2 + 1, id, len); 806 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 807 str, 0); 808 os_free(str); 809 if (res < 0) 810 return; 811 } 812 813 if (wpa_s->conf->update_config) { 814 res = wpa_config_write(wpa_s->confname, wpa_s->conf); 815 if (res) { 816 wpa_printf(MSG_DEBUG, "Failed to update config after " 817 "anonymous_id update"); 818 } 819 } 820 } 821 #endif /* IEEE8021X_EAPOL */ 822 823 824 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s) 825 { 826 #ifdef IEEE8021X_EAPOL 827 struct eapol_ctx *ctx; 828 ctx = os_zalloc(sizeof(*ctx)); 829 if (ctx == NULL) { 830 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context."); 831 return -1; 832 } 833 834 ctx->ctx = wpa_s; 835 ctx->msg_ctx = wpa_s; 836 ctx->eapol_send_ctx = wpa_s; 837 ctx->preauth = 0; 838 ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done; 839 ctx->eapol_send = wpa_supplicant_eapol_send; 840 ctx->set_wep_key = wpa_eapol_set_wep_key; 841 #ifndef CONFIG_NO_CONFIG_BLOBS 842 ctx->set_config_blob = wpa_supplicant_set_config_blob; 843 ctx->get_config_blob = wpa_supplicant_get_config_blob; 844 #endif /* CONFIG_NO_CONFIG_BLOBS */ 845 ctx->aborted_cached = wpa_supplicant_aborted_cached; 846 ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path; 847 ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path; 848 ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path; 849 ctx->wps = wpa_s->wps; 850 ctx->eap_param_needed = wpa_supplicant_eap_param_needed; 851 ctx->port_cb = wpa_supplicant_port_cb; 852 ctx->cb = wpa_supplicant_eapol_cb; 853 ctx->cert_cb = wpa_supplicant_cert_cb; 854 ctx->status_cb = wpa_supplicant_status_cb; 855 ctx->set_anon_id = wpa_supplicant_set_anon_id; 856 ctx->cb_ctx = wpa_s; 857 wpa_s->eapol = eapol_sm_init(ctx); 858 if (wpa_s->eapol == NULL) { 859 os_free(ctx); 860 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state " 861 "machines."); 862 return -1; 863 } 864 #endif /* IEEE8021X_EAPOL */ 865 866 return 0; 867 } 868 869 870 #ifndef CONFIG_NO_WPA 871 static void wpa_supplicant_set_rekey_offload(void *ctx, const u8 *kek, 872 const u8 *kck, 873 const u8 *replay_ctr) 874 { 875 struct wpa_supplicant *wpa_s = ctx; 876 877 wpa_drv_set_rekey_info(wpa_s, kek, kck, replay_ctr); 878 } 879 #endif /* CONFIG_NO_WPA */ 880 881 882 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s) 883 { 884 #ifndef CONFIG_NO_WPA 885 struct wpa_sm_ctx *ctx; 886 ctx = os_zalloc(sizeof(*ctx)); 887 if (ctx == NULL) { 888 wpa_printf(MSG_ERROR, "Failed to allocate WPA context."); 889 return -1; 890 } 891 892 ctx->ctx = wpa_s; 893 ctx->msg_ctx = wpa_s; 894 ctx->set_state = _wpa_supplicant_set_state; 895 ctx->get_state = _wpa_supplicant_get_state; 896 ctx->deauthenticate = _wpa_supplicant_deauthenticate; 897 ctx->set_key = wpa_supplicant_set_key; 898 ctx->get_network_ctx = wpa_supplicant_get_network_ctx; 899 ctx->get_bssid = wpa_supplicant_get_bssid; 900 ctx->ether_send = _wpa_ether_send; 901 ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie; 902 ctx->alloc_eapol = _wpa_alloc_eapol; 903 ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout; 904 ctx->add_pmkid = wpa_supplicant_add_pmkid; 905 ctx->remove_pmkid = wpa_supplicant_remove_pmkid; 906 #ifndef CONFIG_NO_CONFIG_BLOBS 907 ctx->set_config_blob = wpa_supplicant_set_config_blob; 908 ctx->get_config_blob = wpa_supplicant_get_config_blob; 909 #endif /* CONFIG_NO_CONFIG_BLOBS */ 910 ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection; 911 #ifdef CONFIG_IEEE80211R 912 ctx->update_ft_ies = wpa_supplicant_update_ft_ies; 913 ctx->send_ft_action = wpa_supplicant_send_ft_action; 914 ctx->mark_authenticated = wpa_supplicant_mark_authenticated; 915 #endif /* CONFIG_IEEE80211R */ 916 #ifdef CONFIG_TDLS 917 ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa; 918 ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt; 919 ctx->tdls_oper = wpa_supplicant_tdls_oper; 920 ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset; 921 #endif /* CONFIG_TDLS */ 922 ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload; 923 924 wpa_s->wpa = wpa_sm_init(ctx); 925 if (wpa_s->wpa == NULL) { 926 wpa_printf(MSG_ERROR, "Failed to initialize WPA state " 927 "machine"); 928 return -1; 929 } 930 #endif /* CONFIG_NO_WPA */ 931 932 return 0; 933 } 934 935 936 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s, 937 struct wpa_ssid *ssid) 938 { 939 struct rsn_supp_config conf; 940 if (ssid) { 941 os_memset(&conf, 0, sizeof(conf)); 942 conf.network_ctx = ssid; 943 conf.peerkey_enabled = ssid->peerkey; 944 conf.allowed_pairwise_cipher = ssid->pairwise_cipher; 945 #ifdef IEEE8021X_EAPOL 946 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ? 947 wpa_s->conf->okc : ssid->proactive_key_caching; 948 conf.eap_workaround = ssid->eap_workaround; 949 conf.eap_conf_ctx = &ssid->eap; 950 #endif /* IEEE8021X_EAPOL */ 951 conf.ssid = ssid->ssid; 952 conf.ssid_len = ssid->ssid_len; 953 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey; 954 #ifdef CONFIG_P2P 955 if (ssid->p2p_group && wpa_s->current_bss && 956 !wpa_s->p2p_disable_ip_addr_req) { 957 struct wpabuf *p2p; 958 p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss, 959 P2P_IE_VENDOR_TYPE); 960 if (p2p) { 961 u8 group_capab; 962 group_capab = p2p_get_group_capab(p2p); 963 if (group_capab & 964 P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION) 965 conf.p2p = 1; 966 wpabuf_free(p2p); 967 } 968 } 969 #endif /* CONFIG_P2P */ 970 } 971 wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL); 972 } 973
