2 * hostapd - WPA/RSN IE and KDE definitions
3 * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #include "utils/includes.h"
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "eapol_auth/eapol_auth_sm.h"
14 #include "ap_config.h"
15 #include "ieee802_11.h"
17 #include "pmksa_cache_auth.h"
18 #include "wpa_auth_ie.h"
19 #include "wpa_auth_i.h"
22 #ifdef CONFIG_RSN_TESTING
24 #endif /* CONFIG_RSN_TESTING */
27 static int wpa_write_wpa_ie(struct wpa_auth_config *conf, u8 *buf, size_t len)
29 struct wpa_ie_hdr *hdr;
34 hdr = (struct wpa_ie_hdr *) buf;
35 hdr->elem_id = WLAN_EID_VENDOR_SPECIFIC;
36 RSN_SELECTOR_PUT(hdr->oui, WPA_OUI_TYPE);
37 WPA_PUT_LE16(hdr->version, WPA_VERSION);
38 pos = (u8 *) (hdr + 1);
40 suite = wpa_cipher_to_suite(WPA_PROTO_WPA, conf->wpa_group);
42 wpa_printf(MSG_DEBUG, "Invalid group cipher (%d).",
46 RSN_SELECTOR_PUT(pos, suite);
47 pos += WPA_SELECTOR_LEN;
52 num_suites = wpa_cipher_put_suites(pos, conf->wpa_pairwise);
53 if (num_suites == 0) {
54 wpa_printf(MSG_DEBUG, "Invalid pairwise cipher (%d).",
58 pos += num_suites * WPA_SELECTOR_LEN;
59 WPA_PUT_LE16(count, num_suites);
65 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
66 RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X);
67 pos += WPA_SELECTOR_LEN;
70 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) {
71 RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X);
72 pos += WPA_SELECTOR_LEN;
76 if (num_suites == 0) {
77 wpa_printf(MSG_DEBUG, "Invalid key management type (%d).",
81 WPA_PUT_LE16(count, num_suites);
83 /* WPA Capabilities; use defaults, so no need to include it */
85 hdr->len = (pos - buf) - 2;
91 int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
94 struct rsn_ie_hdr *hdr;
100 hdr = (struct rsn_ie_hdr *) buf;
101 hdr->elem_id = WLAN_EID_RSN;
102 WPA_PUT_LE16(hdr->version, RSN_VERSION);
103 pos = (u8 *) (hdr + 1);
105 suite = wpa_cipher_to_suite(WPA_PROTO_RSN, conf->wpa_group);
107 wpa_printf(MSG_DEBUG, "Invalid group cipher (%d).",
111 RSN_SELECTOR_PUT(pos, suite);
112 pos += RSN_SELECTOR_LEN;
118 #ifdef CONFIG_RSN_TESTING
120 RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 1));
121 pos += RSN_SELECTOR_LEN;
124 #endif /* CONFIG_RSN_TESTING */
126 res = rsn_cipher_put_suites(pos, conf->rsn_pairwise);
128 pos += res * RSN_SELECTOR_LEN;
130 #ifdef CONFIG_RSN_TESTING
132 RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 2));
133 pos += RSN_SELECTOR_LEN;
136 #endif /* CONFIG_RSN_TESTING */
138 if (num_suites == 0) {
139 wpa_printf(MSG_DEBUG, "Invalid pairwise cipher (%d).",
143 WPA_PUT_LE16(count, num_suites);
149 #ifdef CONFIG_RSN_TESTING
151 RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 1));
152 pos += RSN_SELECTOR_LEN;
155 #endif /* CONFIG_RSN_TESTING */
157 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
158 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X);
159 pos += RSN_SELECTOR_LEN;
162 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) {
163 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X);
164 pos += RSN_SELECTOR_LEN;
167 #ifdef CONFIG_IEEE80211R
168 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
169 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X);
170 pos += RSN_SELECTOR_LEN;
173 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_PSK) {
174 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK);
175 pos += RSN_SELECTOR_LEN;
178 #endif /* CONFIG_IEEE80211R */
179 #ifdef CONFIG_IEEE80211W
180 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
181 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256);
182 pos += RSN_SELECTOR_LEN;
185 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
186 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256);
187 pos += RSN_SELECTOR_LEN;
190 #endif /* CONFIG_IEEE80211W */
192 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_SAE) {
193 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE);
194 pos += RSN_SELECTOR_LEN;
197 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_SAE) {
198 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_SAE);
199 pos += RSN_SELECTOR_LEN;
202 #endif /* CONFIG_SAE */
203 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
204 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B);
205 pos += RSN_SELECTOR_LEN;
208 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
209 RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192);
210 pos += RSN_SELECTOR_LEN;
214 #ifdef CONFIG_RSN_TESTING
216 RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 2));
217 pos += RSN_SELECTOR_LEN;
220 #endif /* CONFIG_RSN_TESTING */
222 if (num_suites == 0) {
223 wpa_printf(MSG_DEBUG, "Invalid key management type (%d).",
227 WPA_PUT_LE16(count, num_suites);
229 /* RSN Capabilities */
231 if (conf->rsn_preauth)
232 capab |= WPA_CAPABILITY_PREAUTH;
234 capab |= WPA_CAPABILITY_PEERKEY_ENABLED;
235 if (conf->wmm_enabled) {
236 /* 4 PTKSA replay counters when using WMM */
237 capab |= (RSN_NUM_REPLAY_COUNTERS_16 << 2);
239 #ifdef CONFIG_IEEE80211W
240 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
241 capab |= WPA_CAPABILITY_MFPC;
242 if (conf->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED)
243 capab |= WPA_CAPABILITY_MFPR;
245 #endif /* CONFIG_IEEE80211W */
246 #ifdef CONFIG_RSN_TESTING
248 capab |= BIT(8) | BIT(14) | BIT(15);
249 #endif /* CONFIG_RSN_TESTING */
250 WPA_PUT_LE16(pos, capab);
254 if (pos + 2 + PMKID_LEN > buf + len)
257 WPA_PUT_LE16(pos, 1);
259 os_memcpy(pos, pmkid, PMKID_LEN);
263 #ifdef CONFIG_IEEE80211W
264 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
265 if (pos + 2 + 4 > buf + len)
269 WPA_PUT_LE16(pos, 0);
273 /* Management Group Cipher Suite */
274 switch (conf->group_mgmt_cipher) {
275 case WPA_CIPHER_AES_128_CMAC:
276 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC);
278 case WPA_CIPHER_BIP_GMAC_128:
279 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_BIP_GMAC_128);
281 case WPA_CIPHER_BIP_GMAC_256:
282 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_BIP_GMAC_256);
284 case WPA_CIPHER_BIP_CMAC_256:
285 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_BIP_CMAC_256);
288 wpa_printf(MSG_DEBUG,
289 "Invalid group management cipher (0x%x)",
290 conf->group_mgmt_cipher);
293 pos += RSN_SELECTOR_LEN;
295 #endif /* CONFIG_IEEE80211W */
297 #ifdef CONFIG_RSN_TESTING
300 * Fill in any defined fields and add extra data to the end of
303 int pmkid_count_set = pmkid != NULL;
304 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION)
307 WPA_PUT_LE16(pos, 0);
309 if (conf->ieee80211w == NO_MGMT_FRAME_PROTECTION) {
310 /* Management Group Cipher Suite */
311 RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC);
312 pos += RSN_SELECTOR_LEN;
315 os_memset(pos, 0x12, 17);
318 #endif /* CONFIG_RSN_TESTING */
320 hdr->len = (pos - buf) - 2;
326 static u8 * wpa_write_osen(struct wpa_auth_config *conf, u8 *eid)
331 *eid++ = WLAN_EID_VENDOR_SPECIFIC;
332 len = eid++; /* to be filled */
333 WPA_PUT_BE24(eid, OUI_WFA);
335 *eid++ = HS20_OSEN_OUI_TYPE;
337 /* Group Data Cipher Suite */
338 RSN_SELECTOR_PUT(eid, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
339 eid += RSN_SELECTOR_LEN;
341 /* Pairwise Cipher Suite Count and List */
342 WPA_PUT_LE16(eid, 1);
344 RSN_SELECTOR_PUT(eid, RSN_CIPHER_SUITE_CCMP);
345 eid += RSN_SELECTOR_LEN;
347 /* AKM Suite Count and List */
348 WPA_PUT_LE16(eid, 1);
350 RSN_SELECTOR_PUT(eid, RSN_AUTH_KEY_MGMT_OSEN);
351 eid += RSN_SELECTOR_LEN;
353 /* RSN Capabilities */
355 if (conf->wmm_enabled) {
356 /* 4 PTKSA replay counters when using WMM */
357 capab |= (RSN_NUM_REPLAY_COUNTERS_16 << 2);
359 #ifdef CONFIG_IEEE80211W
360 if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
361 capab |= WPA_CAPABILITY_MFPC;
362 if (conf->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED)
363 capab |= WPA_CAPABILITY_MFPR;
365 #endif /* CONFIG_IEEE80211W */
366 WPA_PUT_LE16(eid, capab);
369 *len = eid - len - 1;
375 int wpa_auth_gen_wpa_ie(struct wpa_authenticator *wpa_auth)
382 if (wpa_auth->conf.wpa == WPA_PROTO_OSEN) {
383 pos = wpa_write_osen(&wpa_auth->conf, pos);
385 if (wpa_auth->conf.wpa & WPA_PROTO_RSN) {
386 res = wpa_write_rsn_ie(&wpa_auth->conf,
387 pos, buf + sizeof(buf) - pos, NULL);
392 #ifdef CONFIG_IEEE80211R
393 if (wpa_key_mgmt_ft(wpa_auth->conf.wpa_key_mgmt)) {
394 res = wpa_write_mdie(&wpa_auth->conf, pos,
395 buf + sizeof(buf) - pos);
400 #endif /* CONFIG_IEEE80211R */
401 if (wpa_auth->conf.wpa & WPA_PROTO_WPA) {
402 res = wpa_write_wpa_ie(&wpa_auth->conf,
403 pos, buf + sizeof(buf) - pos);
409 os_free(wpa_auth->wpa_ie);
410 wpa_auth->wpa_ie = os_malloc(pos - buf);
411 if (wpa_auth->wpa_ie == NULL)
413 os_memcpy(wpa_auth->wpa_ie, buf, pos - buf);
414 wpa_auth->wpa_ie_len = pos - buf;
420 u8 * wpa_add_kde(u8 *pos, u32 kde, const u8 *data, size_t data_len,
421 const u8 *data2, size_t data2_len)
423 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
424 *pos++ = RSN_SELECTOR_LEN + data_len + data2_len;
425 RSN_SELECTOR_PUT(pos, kde);
426 pos += RSN_SELECTOR_LEN;
427 os_memcpy(pos, data, data_len);
430 os_memcpy(pos, data2, data2_len);
437 struct wpa_auth_okc_iter_data {
438 struct rsn_pmksa_cache_entry *pmksa;
445 static int wpa_auth_okc_iter(struct wpa_authenticator *a, void *ctx)
447 struct wpa_auth_okc_iter_data *data = ctx;
448 data->pmksa = pmksa_cache_get_okc(a->pmksa, data->aa, data->spa,
456 int wpa_validate_wpa_ie(struct wpa_authenticator *wpa_auth,
457 struct wpa_state_machine *sm,
458 const u8 *wpa_ie, size_t wpa_ie_len,
459 const u8 *mdie, size_t mdie_len)
461 struct wpa_ie_data data;
462 int ciphers, key_mgmt, res, version;
465 const u8 *pmkid = NULL;
467 if (wpa_auth == NULL || sm == NULL)
468 return WPA_NOT_ENABLED;
470 if (wpa_ie == NULL || wpa_ie_len < 1)
471 return WPA_INVALID_IE;
473 if (wpa_ie[0] == WLAN_EID_RSN)
474 version = WPA_PROTO_RSN;
476 version = WPA_PROTO_WPA;
478 if (!(wpa_auth->conf.wpa & version)) {
479 wpa_printf(MSG_DEBUG, "Invalid WPA proto (%d) from " MACSTR,
480 version, MAC2STR(sm->addr));
481 return WPA_INVALID_PROTO;
484 if (version == WPA_PROTO_RSN) {
485 res = wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, &data);
487 selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
490 else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
491 selector = RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192;
492 else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
493 selector = RSN_AUTH_KEY_MGMT_802_1X_SUITE_B;
494 #ifdef CONFIG_IEEE80211R
495 else if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
496 selector = RSN_AUTH_KEY_MGMT_FT_802_1X;
497 else if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK)
498 selector = RSN_AUTH_KEY_MGMT_FT_PSK;
499 #endif /* CONFIG_IEEE80211R */
500 #ifdef CONFIG_IEEE80211W
501 else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
502 selector = RSN_AUTH_KEY_MGMT_802_1X_SHA256;
503 else if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
504 selector = RSN_AUTH_KEY_MGMT_PSK_SHA256;
505 #endif /* CONFIG_IEEE80211W */
507 else if (data.key_mgmt & WPA_KEY_MGMT_SAE)
508 selector = RSN_AUTH_KEY_MGMT_SAE;
509 else if (data.key_mgmt & WPA_KEY_MGMT_FT_SAE)
510 selector = RSN_AUTH_KEY_MGMT_FT_SAE;
511 #endif /* CONFIG_SAE */
512 else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X)
513 selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X;
514 else if (data.key_mgmt & WPA_KEY_MGMT_PSK)
515 selector = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X;
516 wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector;
518 selector = wpa_cipher_to_suite(WPA_PROTO_RSN,
519 data.pairwise_cipher);
521 selector = RSN_CIPHER_SUITE_CCMP;
522 wpa_auth->dot11RSNAPairwiseCipherSelected = selector;
524 selector = wpa_cipher_to_suite(WPA_PROTO_RSN,
527 selector = RSN_CIPHER_SUITE_CCMP;
528 wpa_auth->dot11RSNAGroupCipherSelected = selector;
530 res = wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, &data);
532 selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X;
533 if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X)
534 selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X;
535 else if (data.key_mgmt & WPA_KEY_MGMT_PSK)
536 selector = WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X;
537 wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector;
539 selector = wpa_cipher_to_suite(WPA_PROTO_WPA,
540 data.pairwise_cipher);
542 selector = RSN_CIPHER_SUITE_TKIP;
543 wpa_auth->dot11RSNAPairwiseCipherSelected = selector;
545 selector = wpa_cipher_to_suite(WPA_PROTO_WPA,
548 selector = WPA_CIPHER_SUITE_TKIP;
549 wpa_auth->dot11RSNAGroupCipherSelected = selector;
552 wpa_printf(MSG_DEBUG, "Failed to parse WPA/RSN IE from "
553 MACSTR " (res=%d)", MAC2STR(sm->addr), res);
554 wpa_hexdump(MSG_DEBUG, "WPA/RSN IE", wpa_ie, wpa_ie_len);
555 return WPA_INVALID_IE;
558 if (data.group_cipher != wpa_auth->conf.wpa_group) {
559 wpa_printf(MSG_DEBUG, "Invalid WPA group cipher (0x%x) from "
560 MACSTR, data.group_cipher, MAC2STR(sm->addr));
561 return WPA_INVALID_GROUP;
564 key_mgmt = data.key_mgmt & wpa_auth->conf.wpa_key_mgmt;
566 wpa_printf(MSG_DEBUG, "Invalid WPA key mgmt (0x%x) from "
567 MACSTR, data.key_mgmt, MAC2STR(sm->addr));
568 return WPA_INVALID_AKMP;
572 else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
573 sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B_192;
574 else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B)
575 sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_SUITE_B;
576 #ifdef CONFIG_IEEE80211R
577 else if (key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X)
578 sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
579 else if (key_mgmt & WPA_KEY_MGMT_FT_PSK)
580 sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_PSK;
581 #endif /* CONFIG_IEEE80211R */
582 #ifdef CONFIG_IEEE80211W
583 else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256)
584 sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
585 else if (key_mgmt & WPA_KEY_MGMT_PSK_SHA256)
586 sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
587 #endif /* CONFIG_IEEE80211W */
589 else if (key_mgmt & WPA_KEY_MGMT_SAE)
590 sm->wpa_key_mgmt = WPA_KEY_MGMT_SAE;
591 else if (key_mgmt & WPA_KEY_MGMT_FT_SAE)
592 sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_SAE;
593 #endif /* CONFIG_SAE */
594 else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X)
595 sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
597 sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
599 if (version == WPA_PROTO_RSN)
600 ciphers = data.pairwise_cipher & wpa_auth->conf.rsn_pairwise;
602 ciphers = data.pairwise_cipher & wpa_auth->conf.wpa_pairwise;
604 wpa_printf(MSG_DEBUG, "Invalid %s pairwise cipher (0x%x) "
606 version == WPA_PROTO_RSN ? "RSN" : "WPA",
607 data.pairwise_cipher, MAC2STR(sm->addr));
608 return WPA_INVALID_PAIRWISE;
611 #ifdef CONFIG_IEEE80211W
612 if (wpa_auth->conf.ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
613 if (!(data.capabilities & WPA_CAPABILITY_MFPC)) {
614 wpa_printf(MSG_DEBUG, "Management frame protection "
615 "required, but client did not enable it");
616 return WPA_MGMT_FRAME_PROTECTION_VIOLATION;
619 if (ciphers & WPA_CIPHER_TKIP) {
620 wpa_printf(MSG_DEBUG, "Management frame protection "
622 return WPA_MGMT_FRAME_PROTECTION_VIOLATION;
625 if (data.mgmt_group_cipher != wpa_auth->conf.group_mgmt_cipher)
627 wpa_printf(MSG_DEBUG, "Unsupported management group "
628 "cipher %d", data.mgmt_group_cipher);
629 return WPA_INVALID_MGMT_GROUP_CIPHER;
633 if (wpa_auth->conf.ieee80211w == NO_MGMT_FRAME_PROTECTION ||
634 !(data.capabilities & WPA_CAPABILITY_MFPC))
635 sm->mgmt_frame_prot = 0;
637 sm->mgmt_frame_prot = 1;
638 #endif /* CONFIG_IEEE80211W */
640 #ifdef CONFIG_IEEE80211R
641 if (wpa_key_mgmt_ft(sm->wpa_key_mgmt)) {
642 if (mdie == NULL || mdie_len < MOBILITY_DOMAIN_ID_LEN + 1) {
643 wpa_printf(MSG_DEBUG, "RSN: Trying to use FT, but "
644 "MDIE not included");
645 return WPA_INVALID_MDIE;
647 if (os_memcmp(mdie, wpa_auth->conf.mobility_domain,
648 MOBILITY_DOMAIN_ID_LEN) != 0) {
649 wpa_hexdump(MSG_DEBUG, "RSN: Attempted to use unknown "
650 "MDIE", mdie, MOBILITY_DOMAIN_ID_LEN);
651 return WPA_INVALID_MDIE;
654 #endif /* CONFIG_IEEE80211R */
656 sm->pairwise = wpa_pick_pairwise_cipher(ciphers, 0);
657 if (sm->pairwise < 0)
658 return WPA_INVALID_PAIRWISE;
660 /* TODO: clear WPA/WPA2 state if STA changes from one to another */
661 if (wpa_ie[0] == WLAN_EID_RSN)
662 sm->wpa = WPA_VERSION_WPA2;
664 sm->wpa = WPA_VERSION_WPA;
667 for (i = 0; i < data.num_pmkid; i++) {
668 wpa_hexdump(MSG_DEBUG, "RSN IE: STA PMKID",
669 &data.pmkid[i * PMKID_LEN], PMKID_LEN);
670 sm->pmksa = pmksa_cache_auth_get(wpa_auth->pmksa, sm->addr,
671 &data.pmkid[i * PMKID_LEN]);
673 pmkid = sm->pmksa->pmkid;
677 for (i = 0; sm->pmksa == NULL && wpa_auth->conf.okc &&
678 i < data.num_pmkid; i++) {
679 struct wpa_auth_okc_iter_data idata;
681 idata.aa = wpa_auth->addr;
682 idata.spa = sm->addr;
683 idata.pmkid = &data.pmkid[i * PMKID_LEN];
684 wpa_auth_for_each_auth(wpa_auth, wpa_auth_okc_iter, &idata);
686 wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG,
687 "OKC match for PMKID");
688 sm->pmksa = pmksa_cache_add_okc(wpa_auth->pmksa,
696 if (sm->pmksa && pmkid) {
697 wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG,
698 "PMKID found from PMKSA cache "
699 "eap_type=%d vlan_id=%d",
700 sm->pmksa->eap_type_authsrv,
702 os_memcpy(wpa_auth->dot11RSNAPMKIDUsed, pmkid, PMKID_LEN);
705 if (sm->wpa_ie == NULL || sm->wpa_ie_len < wpa_ie_len) {
707 sm->wpa_ie = os_malloc(wpa_ie_len);
708 if (sm->wpa_ie == NULL)
709 return WPA_ALLOC_FAIL;
711 os_memcpy(sm->wpa_ie, wpa_ie, wpa_ie_len);
712 sm->wpa_ie_len = wpa_ie_len;
719 int wpa_validate_osen(struct wpa_authenticator *wpa_auth,
720 struct wpa_state_machine *sm,
721 const u8 *osen_ie, size_t osen_ie_len)
723 if (wpa_auth == NULL || sm == NULL)
726 /* TODO: parse OSEN element */
727 sm->wpa_key_mgmt = WPA_KEY_MGMT_OSEN;
728 sm->mgmt_frame_prot = 1;
729 sm->pairwise = WPA_CIPHER_CCMP;
730 sm->wpa = WPA_VERSION_WPA2;
732 if (sm->wpa_ie == NULL || sm->wpa_ie_len < osen_ie_len) {
734 sm->wpa_ie = os_malloc(osen_ie_len);
735 if (sm->wpa_ie == NULL)
739 os_memcpy(sm->wpa_ie, osen_ie, osen_ie_len);
740 sm->wpa_ie_len = osen_ie_len;
745 #endif /* CONFIG_HS20 */
749 * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs
750 * @pos: Pointer to the IE header
751 * @end: Pointer to the end of the Key Data buffer
752 * @ie: Pointer to parsed IE data
753 * Returns: 0 on success, 1 if end mark is found, -1 on failure
755 static int wpa_parse_generic(const u8 *pos, const u8 *end,
756 struct wpa_eapol_ie_parse *ie)
762 RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE &&
763 pos[2 + WPA_SELECTOR_LEN] == 1 &&
764 pos[2 + WPA_SELECTOR_LEN + 1] == 0) {
766 ie->wpa_ie_len = pos[1] + 2;
770 if (pos[1] >= 4 && WPA_GET_BE32(pos + 2) == OSEN_IE_VENDOR_TYPE) {
772 ie->osen_len = pos[1] + 2;
776 if (pos + 1 + RSN_SELECTOR_LEN < end &&
777 pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN &&
778 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) {
779 ie->pmkid = pos + 2 + RSN_SELECTOR_LEN;
783 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
784 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) {
785 ie->gtk = pos + 2 + RSN_SELECTOR_LEN;
786 ie->gtk_len = pos[1] - RSN_SELECTOR_LEN;
790 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
791 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) {
792 ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN;
793 ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN;
797 #ifdef CONFIG_PEERKEY
798 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
799 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) {
800 ie->smk = pos + 2 + RSN_SELECTOR_LEN;
801 ie->smk_len = pos[1] - RSN_SELECTOR_LEN;
805 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
806 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_NONCE) {
807 ie->nonce = pos + 2 + RSN_SELECTOR_LEN;
808 ie->nonce_len = pos[1] - RSN_SELECTOR_LEN;
812 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
813 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_LIFETIME) {
814 ie->lifetime = pos + 2 + RSN_SELECTOR_LEN;
815 ie->lifetime_len = pos[1] - RSN_SELECTOR_LEN;
819 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
820 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_ERROR) {
821 ie->error = pos + 2 + RSN_SELECTOR_LEN;
822 ie->error_len = pos[1] - RSN_SELECTOR_LEN;
825 #endif /* CONFIG_PEERKEY */
827 #ifdef CONFIG_IEEE80211W
828 if (pos[1] > RSN_SELECTOR_LEN + 2 &&
829 RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) {
830 ie->igtk = pos + 2 + RSN_SELECTOR_LEN;
831 ie->igtk_len = pos[1] - RSN_SELECTOR_LEN;
834 #endif /* CONFIG_IEEE80211W */
837 if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
838 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) {
839 ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN;
840 wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key",
841 ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN);
845 if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 &&
846 RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) {
847 ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN;
848 wpa_hexdump(MSG_DEBUG,
849 "WPA: IP Address Allocation in EAPOL-Key",
850 ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN);
853 #endif /* CONFIG_P2P */
860 * wpa_parse_kde_ies - Parse EAPOL-Key Key Data IEs
861 * @buf: Pointer to the Key Data buffer
862 * @len: Key Data Length
863 * @ie: Pointer to parsed IE data
864 * Returns: 0 on success, -1 on failure
866 int wpa_parse_kde_ies(const u8 *buf, size_t len, struct wpa_eapol_ie_parse *ie)
871 os_memset(ie, 0, sizeof(*ie));
872 for (pos = buf, end = pos + len; pos + 1 < end; pos += 2 + pos[1]) {
873 if (pos[0] == 0xdd &&
874 ((pos == buf + len - 1) || pos[1] == 0)) {
878 if (pos + 2 + pos[1] > end) {
879 wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key Key Data "
880 "underflow (ie=%d len=%d pos=%d)",
881 pos[0], pos[1], (int) (pos - buf));
882 wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data",
887 if (*pos == WLAN_EID_RSN) {
889 ie->rsn_ie_len = pos[1] + 2;
890 #ifdef CONFIG_IEEE80211R
891 } else if (*pos == WLAN_EID_MOBILITY_DOMAIN) {
893 ie->mdie_len = pos[1] + 2;
894 } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) {
896 ie->ftie_len = pos[1] + 2;
897 #endif /* CONFIG_IEEE80211R */
898 } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) {
899 ret = wpa_parse_generic(pos, end, ie);
907 wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized EAPOL-Key "
908 "Key Data IE", pos, 2 + pos[1]);
916 int wpa_auth_uses_mfp(struct wpa_state_machine *sm)
918 return sm ? sm->mgmt_frame_prot : 0;