2 * Received Data frame processing for EAPOL messages
3 * Copyright (c) 2010-2015, 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 "crypto/aes_wrap.h"
13 #include "crypto/crypto.h"
14 #include "common/defs.h"
15 #include "common/ieee802_11_defs.h"
16 #include "common/ieee802_11_common.h"
17 #include "common/eapol_common.h"
18 #include "common/wpa_common.h"
19 #include "rsn_supp/wpa_ie.h"
23 static int is_zero(const u8
*buf
, size_t len
)
26 for (i
= 0; i
< len
; i
++) {
34 static int check_mic(const u8
*kck
, size_t kck_len
, int akmp
, int ver
,
35 const u8
*data
, size_t len
)
39 struct ieee802_1x_hdr
*hdr
;
40 struct wpa_eapol_key
*key
;
41 u8 rx_mic
[WPA_EAPOL_KEY_MIC_MAX_LEN
];
47 os_memcpy(buf
, data
, len
);
48 hdr
= (struct ieee802_1x_hdr
*) buf
;
49 key
= (struct wpa_eapol_key
*) (hdr
+ 1);
51 os_memcpy(rx_mic
, key
->key_mic
, mic_len
);
52 os_memset(key
->key_mic
, 0, mic_len
);
54 if (wpa_eapol_key_mic(kck
, kck_len
, akmp
, ver
, buf
, len
,
56 os_memcmp(rx_mic
, key
->key_mic
, mic_len
) == 0)
65 static void rx_data_eapol_key_1_of_4(struct wlantest
*wt
, const u8
*dst
,
66 const u8
*src
, const u8
*data
, size_t len
)
68 struct wlantest_bss
*bss
;
69 struct wlantest_sta
*sta
;
70 const struct ieee802_1x_hdr
*eapol
;
71 const struct wpa_eapol_key
*hdr
;
73 wpa_printf(MSG_DEBUG
, "EAPOL-Key 1/4 " MACSTR
" -> " MACSTR
,
74 MAC2STR(src
), MAC2STR(dst
));
75 bss
= bss_get(wt
, src
);
78 sta
= sta_get(bss
, dst
);
82 eapol
= (const struct ieee802_1x_hdr
*) data
;
83 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
84 if (is_zero(hdr
->key_nonce
, WPA_NONCE_LEN
)) {
85 add_note(wt
, MSG_INFO
, "EAPOL-Key 1/4 from " MACSTR
86 " used zero nonce", MAC2STR(src
));
88 if (!is_zero(hdr
->key_rsc
, 8)) {
89 add_note(wt
, MSG_INFO
, "EAPOL-Key 1/4 from " MACSTR
90 " used non-zero Key RSC", MAC2STR(src
));
92 os_memcpy(sta
->anonce
, hdr
->key_nonce
, WPA_NONCE_LEN
);
96 static int try_pmk(struct wlantest
*wt
, struct wlantest_bss
*bss
,
97 struct wlantest_sta
*sta
, u16 ver
,
98 const u8
*data
, size_t len
,
99 struct wlantest_pmk
*pmk
)
103 if (wpa_key_mgmt_ft(sta
->key_mgmt
)) {
105 u8 pmk_r0_name
[WPA_PMK_NAME_LEN
];
107 u8 pmk_r1_name
[WPA_PMK_NAME_LEN
];
108 u8 ptk_name
[WPA_PMK_NAME_LEN
];
110 wpa_derive_pmk_r0(pmk
->pmk
, sizeof(pmk
->pmk
),
111 bss
->ssid
, bss
->ssid_len
, bss
->mdid
,
112 bss
->r0kh_id
, bss
->r0kh_id_len
,
113 sta
->addr
, pmk_r0
, pmk_r0_name
);
114 wpa_hexdump(MSG_DEBUG
, "FT: PMK-R0", pmk_r0
, PMK_LEN
);
115 wpa_hexdump(MSG_DEBUG
, "FT: PMKR0Name", pmk_r0_name
,
117 wpa_derive_pmk_r1(pmk_r0
, pmk_r0_name
, bss
->r1kh_id
,
118 sta
->addr
, pmk_r1
, pmk_r1_name
);
119 wpa_hexdump_key(MSG_DEBUG
, "FT: PMK-R1", pmk_r1
, PMK_LEN
);
120 wpa_hexdump(MSG_DEBUG
, "FT: PMKR1Name", pmk_r1_name
,
122 if (wpa_pmk_r1_to_ptk(pmk_r1
, sta
->snonce
, sta
->anonce
,
124 bss
->bssid
, pmk_r1_name
, &ptk
, ptk_name
,
126 sta
->pairwise_cipher
) < 0 ||
127 check_mic(ptk
.kck
, ptk
.kck_len
, sta
->key_mgmt
, ver
, data
,
130 } else if (wpa_pmk_to_ptk(pmk
->pmk
, sizeof(pmk
->pmk
),
131 "Pairwise key expansion",
132 bss
->bssid
, sta
->addr
, sta
->anonce
,
133 sta
->snonce
, &ptk
, sta
->key_mgmt
,
134 sta
->pairwise_cipher
) < 0 ||
135 check_mic(ptk
.kck
, ptk
.kck_len
, sta
->key_mgmt
, ver
, data
,
140 sta
->tk_len
= wpa_cipher_key_len(sta
->pairwise_cipher
);
141 wpa_printf(MSG_INFO
, "Derived PTK for STA " MACSTR
" BSSID " MACSTR
,
142 MAC2STR(sta
->addr
), MAC2STR(bss
->bssid
));
143 sta
->counters
[WLANTEST_STA_COUNTER_PTK_LEARNED
]++;
146 * Rekeying - use new PTK for EAPOL-Key frames, but continue
147 * using the old PTK for frame decryption.
149 add_note(wt
, MSG_DEBUG
, "Derived PTK during rekeying");
150 os_memcpy(&sta
->tptk
, &ptk
, sizeof(ptk
));
151 wpa_hexdump(MSG_DEBUG
, "TPTK:KCK",
152 sta
->tptk
.kck
, sta
->tptk
.kck_len
);
153 wpa_hexdump(MSG_DEBUG
, "TPTK:KEK",
154 sta
->tptk
.kek
, sta
->tptk
.kek_len
);
155 wpa_hexdump(MSG_DEBUG
, "TPTK:TK",
156 sta
->tptk
.tk
, sta
->tptk
.tk_len
);
160 add_note(wt
, MSG_DEBUG
, "Derived new PTK");
161 os_memcpy(&sta
->ptk
, &ptk
, sizeof(ptk
));
162 wpa_hexdump(MSG_DEBUG
, "PTK:KCK", sta
->ptk
.kck
, sta
->ptk
.kck_len
);
163 wpa_hexdump(MSG_DEBUG
, "PTK:KEK", sta
->ptk
.kek
, sta
->ptk
.kek_len
);
164 wpa_hexdump(MSG_DEBUG
, "PTK:TK", sta
->ptk
.tk
, sta
->ptk
.tk_len
);
166 os_memset(sta
->rsc_tods
, 0, sizeof(sta
->rsc_tods
));
167 os_memset(sta
->rsc_fromds
, 0, sizeof(sta
->rsc_fromds
));
172 static void derive_ptk(struct wlantest
*wt
, struct wlantest_bss
*bss
,
173 struct wlantest_sta
*sta
, u16 ver
,
174 const u8
*data
, size_t len
)
176 struct wlantest_pmk
*pmk
;
178 wpa_printf(MSG_DEBUG
, "Trying to derive PTK for " MACSTR
" (ver %u)",
179 MAC2STR(sta
->addr
), ver
);
180 dl_list_for_each(pmk
, &bss
->pmk
, struct wlantest_pmk
, list
) {
181 wpa_printf(MSG_DEBUG
, "Try per-BSS PMK");
182 if (try_pmk(wt
, bss
, sta
, ver
, data
, len
, pmk
) == 0)
186 dl_list_for_each(pmk
, &wt
->pmk
, struct wlantest_pmk
, list
) {
187 wpa_printf(MSG_DEBUG
, "Try global PMK");
188 if (try_pmk(wt
, bss
, sta
, ver
, data
, len
, pmk
) == 0)
193 struct wlantest_ptk
*ptk
;
194 int prev_level
= wpa_debug_level
;
196 wpa_debug_level
= MSG_WARNING
;
197 dl_list_for_each(ptk
, &wt
->ptk
, struct wlantest_ptk
, list
) {
198 if (check_mic(ptk
->ptk
.kck
, ptk
->ptk
.kck_len
,
199 sta
->key_mgmt
, ver
, data
, len
) < 0)
201 wpa_printf(MSG_INFO
, "Pre-set PTK matches for STA "
202 MACSTR
" BSSID " MACSTR
,
203 MAC2STR(sta
->addr
), MAC2STR(bss
->bssid
));
204 add_note(wt
, MSG_DEBUG
, "Using pre-set PTK");
206 wpa_cipher_key_len(sta
->pairwise_cipher
);
207 os_memcpy(&sta
->ptk
, &ptk
->ptk
, sizeof(ptk
->ptk
));
208 wpa_hexdump(MSG_DEBUG
, "PTK:KCK",
209 sta
->ptk
.kck
, sta
->ptk
.kck_len
);
210 wpa_hexdump(MSG_DEBUG
, "PTK:KEK",
211 sta
->ptk
.kek
, sta
->ptk
.kek_len
);
212 wpa_hexdump(MSG_DEBUG
, "PTK:TK",
213 sta
->ptk
.tk
, sta
->ptk
.tk_len
);
215 os_memset(sta
->rsc_tods
, 0, sizeof(sta
->rsc_tods
));
216 os_memset(sta
->rsc_fromds
, 0, sizeof(sta
->rsc_fromds
));
218 wpa_debug_level
= prev_level
;
221 add_note(wt
, MSG_DEBUG
, "No matching PMK found to derive PTK");
225 static void rx_data_eapol_key_2_of_4(struct wlantest
*wt
, const u8
*dst
,
226 const u8
*src
, const u8
*data
, size_t len
)
228 struct wlantest_bss
*bss
;
229 struct wlantest_sta
*sta
;
230 const struct ieee802_1x_hdr
*eapol
;
231 const struct wpa_eapol_key
*hdr
;
232 const u8
*key_data
, *kck
;
234 u16 key_info
, key_data_len
;
235 struct wpa_eapol_ie_parse ie
;
237 wpa_printf(MSG_DEBUG
, "EAPOL-Key 2/4 " MACSTR
" -> " MACSTR
,
238 MAC2STR(src
), MAC2STR(dst
));
239 bss
= bss_get(wt
, dst
);
242 sta
= sta_get(bss
, src
);
246 eapol
= (const struct ieee802_1x_hdr
*) data
;
247 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
248 if (is_zero(hdr
->key_nonce
, WPA_NONCE_LEN
)) {
249 add_note(wt
, MSG_INFO
, "EAPOL-Key 2/4 from " MACSTR
250 " used zero nonce", MAC2STR(src
));
252 if (!is_zero(hdr
->key_rsc
, 8)) {
253 add_note(wt
, MSG_INFO
, "EAPOL-Key 2/4 from " MACSTR
254 " used non-zero Key RSC", MAC2STR(src
));
256 os_memcpy(sta
->snonce
, hdr
->key_nonce
, WPA_NONCE_LEN
);
257 key_info
= WPA_GET_BE16(hdr
->key_info
);
258 key_data_len
= WPA_GET_BE16(hdr
->key_data_length
);
259 derive_ptk(wt
, bss
, sta
, key_info
& WPA_KEY_INFO_TYPE_MASK
, data
, len
);
261 if (!sta
->ptk_set
&& !sta
->tptk_set
) {
262 add_note(wt
, MSG_DEBUG
,
263 "No PTK known to process EAPOL-Key 2/4");
268 kck_len
= sta
->ptk
.kck_len
;
270 add_note(wt
, MSG_DEBUG
,
271 "Use TPTK for validation EAPOL-Key MIC");
273 kck_len
= sta
->tptk
.kck_len
;
275 if (check_mic(kck
, kck_len
, sta
->key_mgmt
,
276 key_info
& WPA_KEY_INFO_TYPE_MASK
, data
, len
) < 0) {
277 add_note(wt
, MSG_INFO
, "Mismatch in EAPOL-Key 2/4 MIC");
280 add_note(wt
, MSG_DEBUG
, "Valid MIC found in EAPOL-Key 2/4");
282 key_data
= (const u8
*) (hdr
+ 1);
284 if (wpa_supplicant_parse_ies(key_data
, key_data_len
, &ie
) < 0) {
285 add_note(wt
, MSG_INFO
, "Failed to parse EAPOL-Key Key Data");
290 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - WPA IE",
291 ie
.wpa_ie
, ie
.wpa_ie_len
);
292 if (os_memcmp(ie
.wpa_ie
, sta
->rsnie
, ie
.wpa_ie_len
) != 0) {
293 struct ieee802_11_elems elems
;
294 add_note(wt
, MSG_INFO
,
295 "Mismatch in WPA IE between EAPOL-Key 2/4 "
296 "and (Re)Association Request from " MACSTR
,
298 wpa_hexdump(MSG_INFO
, "WPA IE in EAPOL-Key",
299 ie
.wpa_ie
, ie
.wpa_ie_len
);
300 wpa_hexdump(MSG_INFO
, "WPA IE in (Re)Association "
303 sta
->rsnie
[0] ? 2 + sta
->rsnie
[1] : 0);
305 * The sniffer may have missed (Re)Association
306 * Request, so try to survive with the information from
309 os_memset(&elems
, 0, sizeof(elems
));
310 elems
.wpa_ie
= ie
.wpa_ie
+ 2;
311 elems
.wpa_ie_len
= ie
.wpa_ie_len
- 2;
312 wpa_printf(MSG_DEBUG
, "Update STA data based on WPA "
313 "IE in EAPOL-Key 2/4");
314 sta_update_assoc(sta
, &elems
);
319 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - RSN IE",
320 ie
.rsn_ie
, ie
.rsn_ie_len
);
321 if (os_memcmp(ie
.rsn_ie
, sta
->rsnie
, ie
.rsn_ie_len
) != 0) {
322 struct ieee802_11_elems elems
;
323 add_note(wt
, MSG_INFO
,
324 "Mismatch in RSN IE between EAPOL-Key 2/4 "
325 "and (Re)Association Request from " MACSTR
,
327 wpa_hexdump(MSG_INFO
, "RSN IE in EAPOL-Key",
328 ie
.rsn_ie
, ie
.rsn_ie_len
);
329 wpa_hexdump(MSG_INFO
, "RSN IE in (Re)Association "
332 sta
->rsnie
[0] ? 2 + sta
->rsnie
[1] : 0);
334 * The sniffer may have missed (Re)Association
335 * Request, so try to survive with the information from
338 os_memset(&elems
, 0, sizeof(elems
));
339 elems
.rsn_ie
= ie
.rsn_ie
+ 2;
340 elems
.rsn_ie_len
= ie
.rsn_ie_len
- 2;
341 wpa_printf(MSG_DEBUG
, "Update STA data based on RSN "
342 "IE in EAPOL-Key 2/4");
343 sta_update_assoc(sta
, &elems
);
349 static u8
* decrypt_eapol_key_data_rc4(struct wlantest
*wt
, const u8
*kek
,
350 const struct wpa_eapol_key
*hdr
,
354 u16 keydatalen
= WPA_GET_BE16(hdr
->key_data_length
);
356 buf
= os_malloc(keydatalen
);
360 os_memcpy(ek
, hdr
->key_iv
, 16);
361 os_memcpy(ek
+ 16, kek
, 16);
362 os_memcpy(buf
, hdr
+ 1, keydatalen
);
363 if (rc4_skip(ek
, 32, 256, buf
, keydatalen
)) {
364 add_note(wt
, MSG_INFO
, "RC4 failed");
374 static u8
* decrypt_eapol_key_data_aes(struct wlantest
*wt
, const u8
*kek
,
375 const struct wpa_eapol_key
*hdr
,
379 u16 keydatalen
= WPA_GET_BE16(hdr
->key_data_length
);
381 if (keydatalen
% 8) {
382 add_note(wt
, MSG_INFO
, "Unsupported AES-WRAP len %d",
386 keydatalen
-= 8; /* AES-WRAP adds 8 bytes */
387 buf
= os_malloc(keydatalen
);
390 if (aes_unwrap(kek
, 16, keydatalen
/ 8, (u8
*) (hdr
+ 1), buf
)) {
392 add_note(wt
, MSG_INFO
,
393 "AES unwrap failed - could not decrypt EAPOL-Key "
403 static u8
* decrypt_eapol_key_data(struct wlantest
*wt
, const u8
*kek
,
404 size_t kek_len
, u16 ver
,
405 const struct wpa_eapol_key
*hdr
,
411 case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4
:
412 return decrypt_eapol_key_data_rc4(wt
, kek
, hdr
, len
);
413 case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES
:
414 case WPA_KEY_INFO_TYPE_AES_128_CMAC
:
415 return decrypt_eapol_key_data_aes(wt
, kek
, hdr
, len
);
416 case WPA_KEY_INFO_TYPE_AKM_DEFINED
:
417 /* For now, assume this is OSEN */
418 return decrypt_eapol_key_data_aes(wt
, kek
, hdr
, len
);
420 add_note(wt
, MSG_INFO
,
421 "Unsupported EAPOL-Key Key Descriptor Version %u",
428 static void learn_kde_keys(struct wlantest
*wt
, struct wlantest_bss
*bss
,
429 struct wlantest_sta
*sta
,
430 const u8
*buf
, size_t len
, const u8
*rsc
)
432 struct wpa_eapol_ie_parse ie
;
434 if (wpa_supplicant_parse_ies(buf
, len
, &ie
) < 0) {
435 add_note(wt
, MSG_INFO
, "Failed to parse EAPOL-Key Key Data");
440 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - WPA IE",
441 ie
.wpa_ie
, ie
.wpa_ie_len
);
445 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - RSN IE",
446 ie
.rsn_ie
, ie
.rsn_ie_len
);
450 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - GTK KDE",
452 if (ie
.gtk_len
>= 2 && ie
.gtk_len
<= 2 + 32) {
454 id
= ie
.gtk
[0] & 0x03;
455 add_note(wt
, MSG_DEBUG
, "GTK KeyID=%u tx=%u",
456 id
, !!(ie
.gtk
[0] & 0x04));
457 if ((ie
.gtk
[0] & 0xf8) || ie
.gtk
[1]) {
458 add_note(wt
, MSG_INFO
,
459 "GTK KDE: Reserved field set: "
460 "%02x %02x", ie
.gtk
[0], ie
.gtk
[1]);
462 wpa_hexdump(MSG_DEBUG
, "GTK", ie
.gtk
+ 2,
464 bss
->gtk_len
[id
] = ie
.gtk_len
- 2;
465 sta
->gtk_len
= ie
.gtk_len
- 2;
466 os_memcpy(bss
->gtk
[id
], ie
.gtk
+ 2, ie
.gtk_len
- 2);
467 os_memcpy(sta
->gtk
, ie
.gtk
+ 2, ie
.gtk_len
- 2);
468 bss
->rsc
[id
][0] = rsc
[5];
469 bss
->rsc
[id
][1] = rsc
[4];
470 bss
->rsc
[id
][2] = rsc
[3];
471 bss
->rsc
[id
][3] = rsc
[2];
472 bss
->rsc
[id
][4] = rsc
[1];
473 bss
->rsc
[id
][5] = rsc
[0];
476 wpa_hexdump(MSG_DEBUG
, "RSC", bss
->rsc
[id
], 6);
478 add_note(wt
, MSG_INFO
, "Invalid GTK KDE length %u",
479 (unsigned) ie
.gtk_len
);
484 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data - IGTK KDE",
485 ie
.igtk
, ie
.igtk_len
);
486 if (ie
.igtk_len
== 24) {
488 id
= WPA_GET_LE16(ie
.igtk
);
490 add_note(wt
, MSG_INFO
,
491 "Unexpected IGTK KeyID %u", id
);
494 add_note(wt
, MSG_DEBUG
, "IGTK KeyID %u", id
);
495 wpa_hexdump(MSG_DEBUG
, "IPN", ie
.igtk
+ 2, 6);
496 wpa_hexdump(MSG_DEBUG
, "IGTK", ie
.igtk
+ 8,
498 os_memcpy(bss
->igtk
[id
], ie
.igtk
+ 8, 16);
499 bss
->igtk_len
[id
] = 16;
501 bss
->ipn
[id
][0] = ipn
[5];
502 bss
->ipn
[id
][1] = ipn
[4];
503 bss
->ipn
[id
][2] = ipn
[3];
504 bss
->ipn
[id
][3] = ipn
[2];
505 bss
->ipn
[id
][4] = ipn
[1];
506 bss
->ipn
[id
][5] = ipn
[0];
509 } else if (ie
.igtk_len
== 40) {
511 id
= WPA_GET_LE16(ie
.igtk
);
513 add_note(wt
, MSG_INFO
,
514 "Unexpected IGTK KeyID %u", id
);
517 add_note(wt
, MSG_DEBUG
, "IGTK KeyID %u", id
);
518 wpa_hexdump(MSG_DEBUG
, "IPN", ie
.igtk
+ 2, 6);
519 wpa_hexdump(MSG_DEBUG
, "IGTK", ie
.igtk
+ 8,
521 os_memcpy(bss
->igtk
[id
], ie
.igtk
+ 8, 32);
522 bss
->igtk_len
[id
] = 32;
524 bss
->ipn
[id
][0] = ipn
[5];
525 bss
->ipn
[id
][1] = ipn
[4];
526 bss
->ipn
[id
][2] = ipn
[3];
527 bss
->ipn
[id
][3] = ipn
[2];
528 bss
->ipn
[id
][4] = ipn
[1];
529 bss
->ipn
[id
][5] = ipn
[0];
533 add_note(wt
, MSG_INFO
, "Invalid IGTK KDE length %u",
534 (unsigned) ie
.igtk_len
);
540 static void rx_data_eapol_key_3_of_4(struct wlantest
*wt
, const u8
*dst
,
541 const u8
*src
, const u8
*data
, size_t len
)
543 struct wlantest_bss
*bss
;
544 struct wlantest_sta
*sta
;
545 const struct ieee802_1x_hdr
*eapol
;
546 const struct wpa_eapol_key
*hdr
;
547 const u8
*key_data
, *kck
, *kek
;
548 size_t kck_len
, kek_len
;
551 u8
*decrypted_buf
= NULL
;
553 size_t decrypted_len
= 0;
554 struct wpa_eapol_ie_parse ie
;
556 wpa_printf(MSG_DEBUG
, "EAPOL-Key 3/4 " MACSTR
" -> " MACSTR
,
557 MAC2STR(src
), MAC2STR(dst
));
558 bss
= bss_get(wt
, src
);
561 sta
= sta_get(bss
, dst
);
565 eapol
= (const struct ieee802_1x_hdr
*) data
;
566 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
567 key_info
= WPA_GET_BE16(hdr
->key_info
);
569 if (os_memcmp(sta
->anonce
, hdr
->key_nonce
, WPA_NONCE_LEN
) != 0) {
570 add_note(wt
, MSG_INFO
,
571 "EAPOL-Key ANonce mismatch between 1/4 and 3/4");
574 os_memcpy(sta
->anonce
, hdr
->key_nonce
, WPA_NONCE_LEN
);
576 derive_ptk(wt
, bss
, sta
, key_info
& WPA_KEY_INFO_TYPE_MASK
,
580 if (!sta
->ptk_set
&& !sta
->tptk_set
) {
581 add_note(wt
, MSG_DEBUG
,
582 "No PTK known to process EAPOL-Key 3/4");
587 kek_len
= sta
->ptk
.kek_len
;
589 kck_len
= sta
->ptk
.kck_len
;
591 add_note(wt
, MSG_DEBUG
,
592 "Use TPTK for validation EAPOL-Key MIC");
594 kck_len
= sta
->tptk
.kck_len
;
596 kek_len
= sta
->tptk
.kek_len
;
598 if (check_mic(kck
, kck_len
, sta
->key_mgmt
,
599 key_info
& WPA_KEY_INFO_TYPE_MASK
, data
, len
) < 0) {
600 add_note(wt
, MSG_INFO
, "Mismatch in EAPOL-Key 3/4 MIC");
603 add_note(wt
, MSG_DEBUG
, "Valid MIC found in EAPOL-Key 3/4");
605 key_data
= (const u8
*) (hdr
+ 1);
606 if (!(key_info
& WPA_KEY_INFO_ENCR_KEY_DATA
)) {
607 if (sta
->proto
& WPA_PROTO_RSN
)
608 add_note(wt
, MSG_INFO
,
609 "EAPOL-Key 3/4 without EncrKeyData bit");
610 decrypted
= key_data
;
611 decrypted_len
= WPA_GET_BE16(hdr
->key_data_length
);
613 ver
= key_info
& WPA_KEY_INFO_TYPE_MASK
;
614 decrypted_buf
= decrypt_eapol_key_data(wt
, kek
, kek_len
, ver
,
615 hdr
, &decrypted_len
);
616 if (decrypted_buf
== NULL
) {
617 add_note(wt
, MSG_INFO
,
618 "Failed to decrypt EAPOL-Key Key Data");
621 decrypted
= decrypted_buf
;
622 wpa_hexdump(MSG_DEBUG
, "Decrypted EAPOL-Key Key Data",
623 decrypted
, decrypted_len
);
625 if (wt
->write_pcap_dumper
&& decrypted
!= key_data
) {
626 /* Fill in a dummy Data frame header */
627 u8 buf
[24 + 8 + sizeof(*eapol
) + sizeof(*hdr
)];
628 struct ieee80211_hdr
*h
;
629 struct wpa_eapol_key
*k
;
634 plain_len
= decrypted_len
;
636 while (p
+ 1 < decrypted
+ decrypted_len
) {
637 if (p
[0] == 0xdd && p
[1] == 0x00) {
639 plain_len
= p
- decrypted
;
645 os_memset(buf
, 0, sizeof(buf
));
646 h
= (struct ieee80211_hdr
*) buf
;
647 h
->frame_control
= host_to_le16(0x0208);
648 os_memcpy(h
->addr1
, dst
, ETH_ALEN
);
649 os_memcpy(h
->addr2
, src
, ETH_ALEN
);
650 os_memcpy(h
->addr3
, src
, ETH_ALEN
);
651 pos
= (u8
*) (h
+ 1);
652 os_memcpy(pos
, "\xaa\xaa\x03\x00\x00\x00\x88\x8e", 8);
654 os_memcpy(pos
, eapol
, sizeof(*eapol
));
655 pos
+= sizeof(*eapol
);
656 os_memcpy(pos
, hdr
, sizeof(*hdr
));
657 k
= (struct wpa_eapol_key
*) pos
;
658 WPA_PUT_BE16(k
->key_info
,
659 key_info
& ~WPA_KEY_INFO_ENCR_KEY_DATA
);
660 WPA_PUT_BE16(k
->key_data_length
, plain_len
);
661 write_pcap_decrypted(wt
, buf
, sizeof(buf
),
662 decrypted
, plain_len
);
665 if (wpa_supplicant_parse_ies(decrypted
, decrypted_len
, &ie
) < 0) {
666 add_note(wt
, MSG_INFO
, "Failed to parse EAPOL-Key Key Data");
667 os_free(decrypted_buf
);
672 os_memcmp(ie
.wpa_ie
, bss
->wpaie
, ie
.wpa_ie_len
) != 0) ||
673 (ie
.wpa_ie
== NULL
&& bss
->wpaie
[0])) {
674 add_note(wt
, MSG_INFO
,
675 "Mismatch in WPA IE between EAPOL-Key 3/4 and "
676 "Beacon/Probe Response from " MACSTR
,
677 MAC2STR(bss
->bssid
));
678 wpa_hexdump(MSG_INFO
, "WPA IE in EAPOL-Key",
679 ie
.wpa_ie
, ie
.wpa_ie_len
);
680 wpa_hexdump(MSG_INFO
, "WPA IE in Beacon/Probe "
683 bss
->wpaie
[0] ? 2 + bss
->wpaie
[1] : 0);
687 os_memcmp(ie
.rsn_ie
, bss
->rsnie
, ie
.rsn_ie_len
) != 0) ||
688 (ie
.rsn_ie
== NULL
&& bss
->rsnie
[0])) {
689 add_note(wt
, MSG_INFO
, "Mismatch in RSN IE between EAPOL-Key "
690 "3/4 and Beacon/Probe Response from " MACSTR
,
691 MAC2STR(bss
->bssid
));
692 wpa_hexdump(MSG_INFO
, "RSN IE in EAPOL-Key",
693 ie
.rsn_ie
, ie
.rsn_ie_len
);
694 wpa_hexdump(MSG_INFO
, "RSN IE in Beacon/Probe Response",
696 bss
->rsnie
[0] ? 2 + bss
->rsnie
[1] : 0);
699 learn_kde_keys(wt
, bss
, sta
, decrypted
, decrypted_len
, hdr
->key_rsc
);
700 os_free(decrypted_buf
);
704 static void rx_data_eapol_key_4_of_4(struct wlantest
*wt
, const u8
*dst
,
705 const u8
*src
, const u8
*data
, size_t len
)
707 struct wlantest_bss
*bss
;
708 struct wlantest_sta
*sta
;
709 const struct ieee802_1x_hdr
*eapol
;
710 const struct wpa_eapol_key
*hdr
;
715 wpa_printf(MSG_DEBUG
, "EAPOL-Key 4/4 " MACSTR
" -> " MACSTR
,
716 MAC2STR(src
), MAC2STR(dst
));
717 bss
= bss_get(wt
, dst
);
720 sta
= sta_get(bss
, src
);
724 eapol
= (const struct ieee802_1x_hdr
*) data
;
725 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
726 if (!is_zero(hdr
->key_rsc
, 8)) {
727 add_note(wt
, MSG_INFO
, "EAPOL-Key 4/4 from " MACSTR
" used "
728 "non-zero Key RSC", MAC2STR(src
));
730 key_info
= WPA_GET_BE16(hdr
->key_info
);
732 if (!sta
->ptk_set
&& !sta
->tptk_set
) {
733 add_note(wt
, MSG_DEBUG
,
734 "No PTK known to process EAPOL-Key 4/4");
739 kck_len
= sta
->ptk
.kck_len
;
741 add_note(wt
, MSG_DEBUG
,
742 "Use TPTK for validation EAPOL-Key MIC");
744 kck_len
= sta
->tptk
.kck_len
;
746 if (check_mic(kck
, kck_len
, sta
->key_mgmt
,
747 key_info
& WPA_KEY_INFO_TYPE_MASK
, data
, len
) < 0) {
748 add_note(wt
, MSG_INFO
, "Mismatch in EAPOL-Key 4/4 MIC");
751 add_note(wt
, MSG_DEBUG
, "Valid MIC found in EAPOL-Key 4/4");
753 add_note(wt
, MSG_DEBUG
, "Update PTK (rekeying)");
754 os_memcpy(&sta
->ptk
, &sta
->tptk
, sizeof(sta
->ptk
));
757 os_memset(sta
->rsc_tods
, 0, sizeof(sta
->rsc_tods
));
758 os_memset(sta
->rsc_fromds
, 0, sizeof(sta
->rsc_fromds
));
763 static void rx_data_eapol_key_1_of_2(struct wlantest
*wt
, const u8
*dst
,
764 const u8
*src
, const u8
*data
, size_t len
)
766 struct wlantest_bss
*bss
;
767 struct wlantest_sta
*sta
;
768 const struct ieee802_1x_hdr
*eapol
;
769 const struct wpa_eapol_key
*hdr
;
772 size_t decrypted_len
= 0;
774 wpa_printf(MSG_DEBUG
, "EAPOL-Key 1/2 " MACSTR
" -> " MACSTR
,
775 MAC2STR(src
), MAC2STR(dst
));
776 bss
= bss_get(wt
, src
);
779 sta
= sta_get(bss
, dst
);
783 eapol
= (const struct ieee802_1x_hdr
*) data
;
784 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
785 key_info
= WPA_GET_BE16(hdr
->key_info
);
788 add_note(wt
, MSG_DEBUG
,
789 "No PTK known to process EAPOL-Key 1/2");
794 check_mic(sta
->ptk
.kck
, sta
->ptk
.kck_len
, sta
->key_mgmt
,
795 key_info
& WPA_KEY_INFO_TYPE_MASK
,
797 add_note(wt
, MSG_INFO
, "Mismatch in EAPOL-Key 1/2 MIC");
800 add_note(wt
, MSG_DEBUG
, "Valid MIC found in EAPOL-Key 1/2");
802 if (sta
->proto
& WPA_PROTO_RSN
&&
803 !(key_info
& WPA_KEY_INFO_ENCR_KEY_DATA
)) {
804 add_note(wt
, MSG_INFO
, "EAPOL-Key 1/2 without EncrKeyData bit");
807 ver
= key_info
& WPA_KEY_INFO_TYPE_MASK
;
808 decrypted
= decrypt_eapol_key_data(wt
, sta
->ptk
.kek
, sta
->ptk
.kek_len
,
809 ver
, hdr
, &decrypted_len
);
810 if (decrypted
== NULL
) {
811 add_note(wt
, MSG_INFO
, "Failed to decrypt EAPOL-Key Key Data");
814 wpa_hexdump(MSG_DEBUG
, "Decrypted EAPOL-Key Key Data",
815 decrypted
, decrypted_len
);
816 if (wt
->write_pcap_dumper
) {
817 /* Fill in a dummy Data frame header */
818 u8 buf
[24 + 8 + sizeof(*eapol
) + sizeof(*hdr
)];
819 struct ieee80211_hdr
*h
;
820 struct wpa_eapol_key
*k
;
824 plain_len
= decrypted_len
;
826 while (pos
+ 1 < decrypted
+ decrypted_len
) {
827 if (pos
[0] == 0xdd && pos
[1] == 0x00) {
829 plain_len
= pos
- decrypted
;
835 os_memset(buf
, 0, sizeof(buf
));
836 h
= (struct ieee80211_hdr
*) buf
;
837 h
->frame_control
= host_to_le16(0x0208);
838 os_memcpy(h
->addr1
, dst
, ETH_ALEN
);
839 os_memcpy(h
->addr2
, src
, ETH_ALEN
);
840 os_memcpy(h
->addr3
, src
, ETH_ALEN
);
841 pos
= (u8
*) (h
+ 1);
842 os_memcpy(pos
, "\xaa\xaa\x03\x00\x00\x00\x88\x8e", 8);
844 os_memcpy(pos
, eapol
, sizeof(*eapol
));
845 pos
+= sizeof(*eapol
);
846 os_memcpy(pos
, hdr
, sizeof(*hdr
));
847 k
= (struct wpa_eapol_key
*) pos
;
848 WPA_PUT_BE16(k
->key_info
,
849 key_info
& ~WPA_KEY_INFO_ENCR_KEY_DATA
);
850 WPA_PUT_BE16(k
->key_data_length
, plain_len
);
851 write_pcap_decrypted(wt
, buf
, sizeof(buf
),
852 decrypted
, plain_len
);
854 if (sta
->proto
& WPA_PROTO_RSN
)
855 learn_kde_keys(wt
, bss
, sta
, decrypted
, decrypted_len
,
858 int klen
= bss
->group_cipher
== WPA_CIPHER_TKIP
? 32 : 16;
859 if (decrypted_len
== klen
) {
860 const u8
*rsc
= hdr
->key_rsc
;
862 id
= (key_info
& WPA_KEY_INFO_KEY_INDEX_MASK
) >>
863 WPA_KEY_INFO_KEY_INDEX_SHIFT
;
864 add_note(wt
, MSG_DEBUG
, "GTK key index %d", id
);
865 wpa_hexdump(MSG_DEBUG
, "GTK", decrypted
,
867 bss
->gtk_len
[id
] = decrypted_len
;
868 os_memcpy(bss
->gtk
[id
], decrypted
, decrypted_len
);
869 bss
->rsc
[id
][0] = rsc
[5];
870 bss
->rsc
[id
][1] = rsc
[4];
871 bss
->rsc
[id
][2] = rsc
[3];
872 bss
->rsc
[id
][3] = rsc
[2];
873 bss
->rsc
[id
][4] = rsc
[1];
874 bss
->rsc
[id
][5] = rsc
[0];
875 wpa_hexdump(MSG_DEBUG
, "RSC", bss
->rsc
[id
], 6);
877 add_note(wt
, MSG_INFO
, "Unexpected WPA Key Data length "
878 "in Group Key msg 1/2 from " MACSTR
,
886 static void rx_data_eapol_key_2_of_2(struct wlantest
*wt
, const u8
*dst
,
887 const u8
*src
, const u8
*data
, size_t len
)
889 struct wlantest_bss
*bss
;
890 struct wlantest_sta
*sta
;
891 const struct ieee802_1x_hdr
*eapol
;
892 const struct wpa_eapol_key
*hdr
;
895 wpa_printf(MSG_DEBUG
, "EAPOL-Key 2/2 " MACSTR
" -> " MACSTR
,
896 MAC2STR(src
), MAC2STR(dst
));
897 bss
= bss_get(wt
, dst
);
900 sta
= sta_get(bss
, src
);
904 eapol
= (const struct ieee802_1x_hdr
*) data
;
905 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
906 if (!is_zero(hdr
->key_rsc
, 8)) {
907 add_note(wt
, MSG_INFO
, "EAPOL-Key 2/2 from " MACSTR
" used "
908 "non-zero Key RSC", MAC2STR(src
));
910 key_info
= WPA_GET_BE16(hdr
->key_info
);
913 add_note(wt
, MSG_DEBUG
,
914 "No PTK known to process EAPOL-Key 2/2");
919 check_mic(sta
->ptk
.kck
, sta
->ptk
.kck_len
, sta
->key_mgmt
,
920 key_info
& WPA_KEY_INFO_TYPE_MASK
,
922 add_note(wt
, MSG_INFO
, "Mismatch in EAPOL-Key 2/2 MIC");
925 add_note(wt
, MSG_DEBUG
, "Valid MIC found in EAPOL-Key 2/2");
929 static void rx_data_eapol_key(struct wlantest
*wt
, const u8
*dst
,
930 const u8
*src
, const u8
*data
, size_t len
,
933 const struct ieee802_1x_hdr
*eapol
;
934 const struct wpa_eapol_key
*hdr
;
936 u16 key_info
, key_length
, ver
, key_data_length
;
938 eapol
= (const struct ieee802_1x_hdr
*) data
;
939 hdr
= (const struct wpa_eapol_key
*) (eapol
+ 1);
941 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key",
942 (const u8
*) hdr
, len
- sizeof(*eapol
));
943 if (len
< sizeof(*hdr
)) {
944 add_note(wt
, MSG_INFO
, "Too short EAPOL-Key frame from " MACSTR
,
949 if (hdr
->type
== EAPOL_KEY_TYPE_RC4
) {
950 /* TODO: EAPOL-Key RC4 for WEP */
951 wpa_printf(MSG_INFO
, "EAPOL-Key Descriptor Type RC4 from "
952 MACSTR
, MAC2STR(src
));
956 if (hdr
->type
!= EAPOL_KEY_TYPE_RSN
&&
957 hdr
->type
!= EAPOL_KEY_TYPE_WPA
) {
958 wpa_printf(MSG_INFO
, "Unsupported EAPOL-Key Descriptor Type "
959 "%u from " MACSTR
, hdr
->type
, MAC2STR(src
));
963 key_info
= WPA_GET_BE16(hdr
->key_info
);
964 key_length
= WPA_GET_BE16(hdr
->key_length
);
965 key_data_length
= WPA_GET_BE16(hdr
->key_data_length
);
966 key_data
= (const u8
*) (hdr
+ 1);
967 if (key_data
+ key_data_length
> data
+ len
) {
968 add_note(wt
, MSG_INFO
, "Truncated EAPOL-Key from " MACSTR
,
972 if (key_data
+ key_data_length
< data
+ len
) {
973 wpa_hexdump(MSG_DEBUG
, "Extra data after EAPOL-Key Key Data "
974 "field", key_data
+ key_data_length
,
975 data
+ len
- key_data
- key_data_length
);
979 ver
= key_info
& WPA_KEY_INFO_TYPE_MASK
;
980 wpa_printf(MSG_DEBUG
, "EAPOL-Key ver=%u %c idx=%u%s%s%s%s%s%s%s%s "
982 ver
, key_info
& WPA_KEY_INFO_KEY_TYPE
? 'P' : 'G',
983 (key_info
& WPA_KEY_INFO_KEY_INDEX_MASK
) >>
984 WPA_KEY_INFO_KEY_INDEX_SHIFT
,
985 (key_info
& WPA_KEY_INFO_INSTALL
) ? " Install" : "",
986 (key_info
& WPA_KEY_INFO_ACK
) ? " ACK" : "",
987 (key_info
& WPA_KEY_INFO_MIC
) ? " MIC" : "",
988 (key_info
& WPA_KEY_INFO_SECURE
) ? " Secure" : "",
989 (key_info
& WPA_KEY_INFO_ERROR
) ? " Error" : "",
990 (key_info
& WPA_KEY_INFO_REQUEST
) ? " Request" : "",
991 (key_info
& WPA_KEY_INFO_ENCR_KEY_DATA
) ? " Encr" : "",
992 (key_info
& WPA_KEY_INFO_SMK_MESSAGE
) ? " SMK" : "",
995 if (ver
!= WPA_KEY_INFO_TYPE_HMAC_MD5_RC4
&&
996 ver
!= WPA_KEY_INFO_TYPE_HMAC_SHA1_AES
&&
997 ver
!= WPA_KEY_INFO_TYPE_AES_128_CMAC
&&
998 ver
!= WPA_KEY_INFO_TYPE_AKM_DEFINED
) {
999 wpa_printf(MSG_INFO
, "Unsupported EAPOL-Key Key Descriptor "
1000 "Version %u from " MACSTR
, ver
, MAC2STR(src
));
1004 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Replay Counter",
1005 hdr
->replay_counter
, WPA_REPLAY_COUNTER_LEN
);
1006 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Nonce",
1007 hdr
->key_nonce
, WPA_NONCE_LEN
);
1008 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key IV",
1010 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key RSC",
1011 hdr
->key_rsc
, WPA_KEY_RSC_LEN
);
1012 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key MIC",
1014 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Key Key Data",
1015 key_data
, key_data_length
);
1017 if (hdr
->type
== EAPOL_KEY_TYPE_RSN
&&
1018 (key_info
& (WPA_KEY_INFO_KEY_INDEX_MASK
| BIT(14) | BIT(15))) !=
1020 wpa_printf(MSG_INFO
, "RSN EAPOL-Key with non-zero reserved "
1021 "Key Info bits 0x%x from " MACSTR
,
1022 key_info
, MAC2STR(src
));
1025 if (hdr
->type
== EAPOL_KEY_TYPE_WPA
&&
1026 (key_info
& (WPA_KEY_INFO_ENCR_KEY_DATA
|
1027 WPA_KEY_INFO_SMK_MESSAGE
|BIT(14) | BIT(15))) != 0) {
1028 wpa_printf(MSG_INFO
, "WPA EAPOL-Key with non-zero reserved "
1029 "Key Info bits 0x%x from " MACSTR
,
1030 key_info
, MAC2STR(src
));
1033 if (key_length
> 32) {
1034 wpa_printf(MSG_INFO
, "EAPOL-Key with invalid Key Length %d "
1035 "from " MACSTR
, key_length
, MAC2STR(src
));
1038 if (ver
!= WPA_KEY_INFO_TYPE_HMAC_MD5_RC4
&&
1039 !is_zero(hdr
->key_iv
, 16)) {
1040 wpa_printf(MSG_INFO
, "EAPOL-Key with non-zero Key IV "
1041 "(reserved with ver=%d) field from " MACSTR
,
1043 wpa_hexdump(MSG_INFO
, "EAPOL-Key Key IV (reserved)",
1047 if (!is_zero(hdr
->key_id
, 8)) {
1048 wpa_printf(MSG_INFO
, "EAPOL-Key with non-zero Key ID "
1049 "(reserved) field from " MACSTR
, MAC2STR(src
));
1050 wpa_hexdump(MSG_INFO
, "EAPOL-Key Key ID (reserved)",
1054 if (hdr
->key_rsc
[6] || hdr
->key_rsc
[7]) {
1055 wpa_printf(MSG_INFO
, "EAPOL-Key with non-zero Key RSC octets "
1056 "(last two are unused)" MACSTR
, MAC2STR(src
));
1059 if (key_info
& (WPA_KEY_INFO_ERROR
| WPA_KEY_INFO_REQUEST
))
1062 if (key_info
& WPA_KEY_INFO_SMK_MESSAGE
)
1065 if (key_info
& WPA_KEY_INFO_KEY_TYPE
) {
1066 /* 4-Way Handshake */
1067 switch (key_info
& (WPA_KEY_INFO_SECURE
|
1070 WPA_KEY_INFO_INSTALL
)) {
1071 case WPA_KEY_INFO_ACK
:
1072 rx_data_eapol_key_1_of_4(wt
, dst
, src
, data
, len
);
1074 case WPA_KEY_INFO_MIC
:
1075 if (key_data_length
== 0)
1076 rx_data_eapol_key_4_of_4(wt
, dst
, src
, data
,
1079 rx_data_eapol_key_2_of_4(wt
, dst
, src
, data
,
1082 case WPA_KEY_INFO_MIC
| WPA_KEY_INFO_ACK
|
1083 WPA_KEY_INFO_INSTALL
:
1084 /* WPA does not include Secure bit in 3/4 */
1085 rx_data_eapol_key_3_of_4(wt
, dst
, src
, data
, len
);
1087 case WPA_KEY_INFO_SECURE
| WPA_KEY_INFO_MIC
|
1088 WPA_KEY_INFO_ACK
| WPA_KEY_INFO_INSTALL
:
1089 rx_data_eapol_key_3_of_4(wt
, dst
, src
, data
, len
);
1091 case WPA_KEY_INFO_SECURE
| WPA_KEY_INFO_MIC
:
1092 if (key_data_length
== 0)
1093 rx_data_eapol_key_4_of_4(wt
, dst
, src
, data
,
1096 rx_data_eapol_key_2_of_4(wt
, dst
, src
, data
,
1100 wpa_printf(MSG_DEBUG
, "Unsupported EAPOL-Key frame");
1104 /* Group Key Handshake */
1105 switch (key_info
& (WPA_KEY_INFO_SECURE
|
1107 WPA_KEY_INFO_ACK
)) {
1108 case WPA_KEY_INFO_SECURE
| WPA_KEY_INFO_MIC
|
1110 rx_data_eapol_key_1_of_2(wt
, dst
, src
, data
, len
);
1112 case WPA_KEY_INFO_SECURE
| WPA_KEY_INFO_MIC
:
1113 rx_data_eapol_key_2_of_2(wt
, dst
, src
, data
, len
);
1116 wpa_printf(MSG_DEBUG
, "Unsupported EAPOL-Key frame");
1123 void rx_data_eapol(struct wlantest
*wt
, const u8
*dst
, const u8
*src
,
1124 const u8
*data
, size_t len
, int prot
)
1126 const struct ieee802_1x_hdr
*hdr
;
1130 wpa_hexdump(MSG_EXCESSIVE
, "EAPOL", data
, len
);
1131 if (len
< sizeof(*hdr
)) {
1132 wpa_printf(MSG_INFO
, "Too short EAPOL frame from " MACSTR
,
1137 hdr
= (const struct ieee802_1x_hdr
*) data
;
1138 length
= be_to_host16(hdr
->length
);
1139 wpa_printf(MSG_DEBUG
, "RX EAPOL: " MACSTR
" -> " MACSTR
"%s ver=%u "
1141 MAC2STR(src
), MAC2STR(dst
), prot
? " Prot" : "",
1142 hdr
->version
, hdr
->type
, length
);
1143 if (hdr
->version
< 1 || hdr
->version
> 3) {
1144 wpa_printf(MSG_INFO
, "Unexpected EAPOL version %u from "
1145 MACSTR
, hdr
->version
, MAC2STR(src
));
1147 if (sizeof(*hdr
) + length
> len
) {
1148 wpa_printf(MSG_INFO
, "Truncated EAPOL frame from " MACSTR
,
1153 if (sizeof(*hdr
) + length
< len
) {
1154 wpa_printf(MSG_INFO
, "EAPOL frame with %d extra bytes",
1155 (int) (len
- sizeof(*hdr
) - length
));
1157 p
= (const u8
*) (hdr
+ 1);
1159 switch (hdr
->type
) {
1160 case IEEE802_1X_TYPE_EAP_PACKET
:
1161 wpa_hexdump(MSG_MSGDUMP
, "EAPOL - EAP packet", p
, length
);
1163 case IEEE802_1X_TYPE_EAPOL_START
:
1164 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Start", p
, length
);
1166 case IEEE802_1X_TYPE_EAPOL_LOGOFF
:
1167 wpa_hexdump(MSG_MSGDUMP
, "EAPOL-Logoff", p
, length
);
1169 case IEEE802_1X_TYPE_EAPOL_KEY
:
1170 rx_data_eapol_key(wt
, dst
, src
, data
, sizeof(*hdr
) + length
,
1173 case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT
:
1174 wpa_hexdump(MSG_MSGDUMP
, "EAPOL - Encapsulated ASF alert",
1178 wpa_hexdump(MSG_MSGDUMP
, "Unknown EAPOL payload", p
, length
);