wpas_glue.c revision ff787d557db719adea0fdf2679667500c65cf74d
1/* 2 * WPA Supplicant - Glue code to setup EAPOL and RSN modules 3 * Copyright (c) 2003-2012, 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 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) 34static 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 49static const struct wpa_config_blob * 50wpa_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) 60static 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 */ 96static 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 */ 136static 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 */ 228static 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 246static 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 253static 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 267static 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 352static 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 369static 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 404static 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 420static 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 428static 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 435static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s) 436{ 437 wpa_supplicant_cancel_auth_timeout(wpa_s); 438} 439 440 441static 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 */ 452static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s) 453{ 454 return wpa_s->wpa_state; 455} 456 457 458static enum wpa_states _wpa_supplicant_get_state(void *wpa_s) 459{ 460 return wpa_supplicant_get_state(wpa_s); 461} 462 463 464static 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 472static void * wpa_supplicant_get_network_ctx(void *wpa_s) 473{ 474 return wpa_supplicant_get_ssid(wpa_s); 475} 476 477 478static 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 485static 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 507static 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 516static 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 523static 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 531static 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 541static 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 587static 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 611static 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 637static 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 650static 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 657static 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 701static 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 712static 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 724enum 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 return WPA_CTRL_REQ_UNKNOWN; 741} 742 743 744const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field, 745 const char *default_txt, 746 const char **txt) 747{ 748 const char *ret = NULL; 749 750 *txt = default_txt; 751 752 switch (field) { 753 case WPA_CTRL_REQ_EAP_IDENTITY: 754 *txt = "Identity"; 755 ret = "IDENTITY"; 756 break; 757 case WPA_CTRL_REQ_EAP_PASSWORD: 758 *txt = "Password"; 759 ret = "PASSWORD"; 760 break; 761 case WPA_CTRL_REQ_EAP_NEW_PASSWORD: 762 *txt = "New Password"; 763 ret = "NEW_PASSWORD"; 764 break; 765 case WPA_CTRL_REQ_EAP_PIN: 766 *txt = "PIN"; 767 ret = "PIN"; 768 break; 769 case WPA_CTRL_REQ_EAP_OTP: 770 ret = "OTP"; 771 break; 772 case WPA_CTRL_REQ_EAP_PASSPHRASE: 773 *txt = "Private key passphrase"; 774 ret = "PASSPHRASE"; 775 break; 776 case WPA_CTRL_REQ_SIM: 777 ret = "SIM"; 778 break; 779 default: 780 break; 781 } 782 783 /* txt needs to be something */ 784 if (*txt == NULL) { 785 wpa_printf(MSG_WARNING, "No message for request %d", field); 786 ret = NULL; 787 } 788 789 return ret; 790} 791 792#ifdef IEEE8021X_EAPOL 793#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG) 794static void wpa_supplicant_eap_param_needed(void *ctx, 795 enum wpa_ctrl_req_type field, 796 const char *default_txt) 797{ 798 struct wpa_supplicant *wpa_s = ctx; 799 struct wpa_ssid *ssid = wpa_s->current_ssid; 800 const char *field_name, *txt = NULL; 801 char *buf; 802 size_t buflen; 803 int len; 804 805 if (ssid == NULL) 806 return; 807 808 wpas_notify_network_request(wpa_s, ssid, field, default_txt); 809 810 field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt, 811 &txt); 812 if (field_name == NULL) { 813 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed", 814 field); 815 return; 816 } 817 818 wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name); 819 820 buflen = 100 + os_strlen(txt) + ssid->ssid_len; 821 buf = os_malloc(buflen); 822 if (buf == NULL) 823 return; 824 len = os_snprintf(buf, buflen, 825 WPA_CTRL_REQ "%s-%d:%s needed for SSID ", 826 field_name, ssid->id, txt); 827 if (os_snprintf_error(buflen, len)) { 828 os_free(buf); 829 return; 830 } 831 if (ssid->ssid && buflen > len + ssid->ssid_len) { 832 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len); 833 len += ssid->ssid_len; 834 buf[len] = '\0'; 835 } 836 buf[buflen - 1] = '\0'; 837 wpa_msg(wpa_s, MSG_INFO, "%s", buf); 838 os_free(buf); 839} 840#else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 841#define wpa_supplicant_eap_param_needed NULL 842#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */ 843 844 845static void wpa_supplicant_port_cb(void *ctx, int authorized) 846{ 847 struct wpa_supplicant *wpa_s = ctx; 848#ifdef CONFIG_AP 849 if (wpa_s->ap_iface) { 850 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant " 851 "port status: %s", 852 authorized ? "Authorized" : "Unauthorized"); 853 return; 854 } 855#endif /* CONFIG_AP */ 856 wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s", 857 authorized ? "Authorized" : "Unauthorized"); 858 wpa_drv_set_supp_port(wpa_s, authorized); 859} 860 861 862static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject, 863 const char *cert_hash, 864 const struct wpabuf *cert) 865{ 866 struct wpa_supplicant *wpa_s = ctx; 867 868 wpas_notify_certification(wpa_s, depth, subject, cert_hash, cert); 869} 870 871 872static void wpa_supplicant_status_cb(void *ctx, const char *status, 873 const char *parameter) 874{ 875 struct wpa_supplicant *wpa_s = ctx; 876 877 wpas_notify_eap_status(wpa_s, status, parameter); 878} 879 880 881static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len) 882{ 883 struct wpa_supplicant *wpa_s = ctx; 884 char *str; 885 int res; 886 887 wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity", 888 id, len); 889 890 if (wpa_s->current_ssid == NULL) 891 return; 892 893 if (id == NULL) { 894 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 895 "NULL", 0) < 0) 896 return; 897 } else { 898 str = os_malloc(len * 2 + 1); 899 if (str == NULL) 900 return; 901 wpa_snprintf_hex(str, len * 2 + 1, id, len); 902 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity", 903 str, 0); 904 os_free(str); 905 if (res < 0) 906 return; 907 } 908 909 if (wpa_s->conf->update_config) { 910 res = wpa_config_write(wpa_s->confname, wpa_s->conf); 911 if (res) { 912 wpa_printf(MSG_DEBUG, "Failed to update config after " 913 "anonymous_id update"); 914 } 915 } 916} 917#endif /* IEEE8021X_EAPOL */ 918 919 920int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s) 921{ 922#ifdef IEEE8021X_EAPOL 923 struct eapol_ctx *ctx; 924 ctx = os_zalloc(sizeof(*ctx)); 925 if (ctx == NULL) { 926 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context."); 927 return -1; 928 } 929 930 ctx->ctx = wpa_s; 931 ctx->msg_ctx = wpa_s; 932 ctx->eapol_send_ctx = wpa_s; 933 ctx->preauth = 0; 934 ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done; 935 ctx->eapol_send = wpa_supplicant_eapol_send; 936 ctx->set_wep_key = wpa_eapol_set_wep_key; 937#ifndef CONFIG_NO_CONFIG_BLOBS 938 ctx->set_config_blob = wpa_supplicant_set_config_blob; 939 ctx->get_config_blob = wpa_supplicant_get_config_blob; 940#endif /* CONFIG_NO_CONFIG_BLOBS */ 941 ctx->aborted_cached = wpa_supplicant_aborted_cached; 942 ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path; 943 ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path; 944 ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path; 945 ctx->openssl_ciphers = wpa_s->conf->openssl_ciphers; 946 ctx->wps = wpa_s->wps; 947 ctx->eap_param_needed = wpa_supplicant_eap_param_needed; 948 ctx->port_cb = wpa_supplicant_port_cb; 949 ctx->cb = wpa_supplicant_eapol_cb; 950 ctx->cert_cb = wpa_supplicant_cert_cb; 951 ctx->status_cb = wpa_supplicant_status_cb; 952 ctx->set_anon_id = wpa_supplicant_set_anon_id; 953 ctx->cb_ctx = wpa_s; 954 wpa_s->eapol = eapol_sm_init(ctx); 955 if (wpa_s->eapol == NULL) { 956 os_free(ctx); 957 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state " 958 "machines."); 959 return -1; 960 } 961#endif /* IEEE8021X_EAPOL */ 962 963 return 0; 964} 965 966 967#ifndef CONFIG_NO_WPA 968static void wpa_supplicant_set_rekey_offload(void *ctx, const u8 *kek, 969 const u8 *kck, 970 const u8 *replay_ctr) 971{ 972 struct wpa_supplicant *wpa_s = ctx; 973 974 wpa_drv_set_rekey_info(wpa_s, kek, kck, replay_ctr); 975} 976#endif /* CONFIG_NO_WPA */ 977 978 979static int wpa_supplicant_key_mgmt_set_pmk(void *ctx, const u8 *pmk, 980 size_t pmk_len) 981{ 982 struct wpa_supplicant *wpa_s = ctx; 983 984 if (wpa_s->conf->key_mgmt_offload) 985 return wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, 986 NULL, 0, pmk, pmk_len); 987 else 988 return 0; 989} 990 991 992int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s) 993{ 994#ifndef CONFIG_NO_WPA 995 struct wpa_sm_ctx *ctx; 996 ctx = os_zalloc(sizeof(*ctx)); 997 if (ctx == NULL) { 998 wpa_printf(MSG_ERROR, "Failed to allocate WPA context."); 999 return -1; 1000 } 1001 1002 ctx->ctx = wpa_s; 1003 ctx->msg_ctx = wpa_s; 1004 ctx->set_state = _wpa_supplicant_set_state; 1005 ctx->get_state = _wpa_supplicant_get_state; 1006 ctx->deauthenticate = _wpa_supplicant_deauthenticate; 1007 ctx->set_key = wpa_supplicant_set_key; 1008 ctx->get_network_ctx = wpa_supplicant_get_network_ctx; 1009 ctx->get_bssid = wpa_supplicant_get_bssid; 1010 ctx->ether_send = _wpa_ether_send; 1011 ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie; 1012 ctx->alloc_eapol = _wpa_alloc_eapol; 1013 ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout; 1014 ctx->add_pmkid = wpa_supplicant_add_pmkid; 1015 ctx->remove_pmkid = wpa_supplicant_remove_pmkid; 1016#ifndef CONFIG_NO_CONFIG_BLOBS 1017 ctx->set_config_blob = wpa_supplicant_set_config_blob; 1018 ctx->get_config_blob = wpa_supplicant_get_config_blob; 1019#endif /* CONFIG_NO_CONFIG_BLOBS */ 1020 ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection; 1021#ifdef CONFIG_IEEE80211R 1022 ctx->update_ft_ies = wpa_supplicant_update_ft_ies; 1023 ctx->send_ft_action = wpa_supplicant_send_ft_action; 1024 ctx->mark_authenticated = wpa_supplicant_mark_authenticated; 1025#endif /* CONFIG_IEEE80211R */ 1026#ifdef CONFIG_TDLS 1027 ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa; 1028 ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt; 1029 ctx->tdls_oper = wpa_supplicant_tdls_oper; 1030 ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset; 1031 ctx->tdls_enable_channel_switch = 1032 wpa_supplicant_tdls_enable_channel_switch; 1033 ctx->tdls_disable_channel_switch = 1034 wpa_supplicant_tdls_disable_channel_switch; 1035#endif /* CONFIG_TDLS */ 1036 ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload; 1037 ctx->key_mgmt_set_pmk = wpa_supplicant_key_mgmt_set_pmk; 1038 1039 wpa_s->wpa = wpa_sm_init(ctx); 1040 if (wpa_s->wpa == NULL) { 1041 wpa_printf(MSG_ERROR, "Failed to initialize WPA state " 1042 "machine"); 1043 os_free(ctx); 1044 return -1; 1045 } 1046#endif /* CONFIG_NO_WPA */ 1047 1048 return 0; 1049} 1050 1051 1052void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s, 1053 struct wpa_ssid *ssid) 1054{ 1055 struct rsn_supp_config conf; 1056 if (ssid) { 1057 os_memset(&conf, 0, sizeof(conf)); 1058 conf.network_ctx = ssid; 1059 conf.peerkey_enabled = ssid->peerkey; 1060 conf.allowed_pairwise_cipher = ssid->pairwise_cipher; 1061#ifdef IEEE8021X_EAPOL 1062 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ? 1063 wpa_s->conf->okc : ssid->proactive_key_caching; 1064 conf.eap_workaround = ssid->eap_workaround; 1065 conf.eap_conf_ctx = &ssid->eap; 1066#endif /* IEEE8021X_EAPOL */ 1067 conf.ssid = ssid->ssid; 1068 conf.ssid_len = ssid->ssid_len; 1069 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey; 1070#ifdef CONFIG_P2P 1071 if (ssid->p2p_group && wpa_s->current_bss && 1072 !wpa_s->p2p_disable_ip_addr_req) { 1073 struct wpabuf *p2p; 1074 p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss, 1075 P2P_IE_VENDOR_TYPE); 1076 if (p2p) { 1077 u8 group_capab; 1078 group_capab = p2p_get_group_capab(p2p); 1079 if (group_capab & 1080 P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION) 1081 conf.p2p = 1; 1082 wpabuf_free(p2p); 1083 } 1084 } 1085#endif /* CONFIG_P2P */ 1086 } 1087 wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL); 1088} 1089