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6fc6879b JM |
1 | /* |
2 | * WPA Supplicant - WPA state machine and EAPOL-Key processing | |
98cd3d1c | 3 | * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> |
73ed03f3 | 4 | * Copyright(c) 2015 Intel Deutschland GmbH |
6fc6879b | 5 | * |
0f3d578e JM |
6 | * This software may be distributed under the terms of the BSD license. |
7 | * See README for more details. | |
6fc6879b JM |
8 | */ |
9 | ||
10 | #include "includes.h" | |
11 | ||
12 | #include "common.h" | |
2022f1d0 | 13 | #include "crypto/aes.h" |
03da66bd JM |
14 | #include "crypto/aes_wrap.h" |
15 | #include "crypto/crypto.h" | |
3642c431 | 16 | #include "crypto/random.h" |
2022f1d0 | 17 | #include "crypto/aes_siv.h" |
03da66bd | 18 | #include "common/ieee802_11_defs.h" |
a6609937 | 19 | #include "common/ieee802_11_common.h" |
fcd3d6ce | 20 | #include "eap_common/eap_defs.h" |
03da66bd | 21 | #include "eapol_supp/eapol_supp_sm.h" |
6fc6879b JM |
22 | #include "wpa.h" |
23 | #include "eloop.h" | |
6fc6879b JM |
24 | #include "preauth.h" |
25 | #include "pmksa_cache.h" | |
26 | #include "wpa_i.h" | |
27 | #include "wpa_ie.h" | |
28 | #include "peerkey.h" | |
6fc6879b JM |
29 | |
30 | ||
73ed03f3 MS |
31 | static const u8 null_rsc[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
32 | ||
33 | ||
6fc6879b JM |
34 | /** |
35 | * wpa_eapol_key_send - Send WPA/RSN EAPOL-Key message | |
36 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
1049af7e | 37 | * @ptk: PTK for Key Confirmation/Encryption Key |
6fc6879b JM |
38 | * @ver: Version field from Key Info |
39 | * @dest: Destination address for the frame | |
40 | * @proto: Ethertype (usually ETH_P_EAPOL) | |
41 | * @msg: EAPOL-Key message | |
42 | * @msg_len: Length of message | |
43 | * @key_mic: Pointer to the buffer to which the EAPOL-Key MIC is written | |
c93b7e18 | 44 | * Returns: >= 0 on success, < 0 on failure |
6fc6879b | 45 | */ |
1049af7e | 46 | int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk, |
c93b7e18 AA |
47 | int ver, const u8 *dest, u16 proto, |
48 | u8 *msg, size_t msg_len, u8 *key_mic) | |
6fc6879b | 49 | { |
c93b7e18 | 50 | int ret = -1; |
5e3b5197 | 51 | size_t mic_len = wpa_mic_len(sm->key_mgmt); |
98cd3d1c | 52 | |
a8e16edc | 53 | if (is_zero_ether_addr(dest) && is_zero_ether_addr(sm->bssid)) { |
6fc6879b JM |
54 | /* |
55 | * Association event was not yet received; try to fetch | |
56 | * BSSID from the driver. | |
57 | */ | |
58 | if (wpa_sm_get_bssid(sm, sm->bssid) < 0) { | |
f049052b BG |
59 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
60 | "WPA: Failed to read BSSID for " | |
61 | "EAPOL-Key destination address"); | |
6fc6879b JM |
62 | } else { |
63 | dest = sm->bssid; | |
f049052b BG |
64 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
65 | "WPA: Use BSSID (" MACSTR | |
66 | ") as the destination for EAPOL-Key", | |
67 | MAC2STR(dest)); | |
6fc6879b JM |
68 | } |
69 | } | |
2022f1d0 JM |
70 | |
71 | if (mic_len) { | |
72 | if (key_mic && (!ptk || !ptk->kck_len)) | |
73 | goto out; | |
74 | ||
75 | if (key_mic && | |
76 | wpa_eapol_key_mic(ptk->kck, ptk->kck_len, sm->key_mgmt, ver, | |
77 | msg, msg_len, key_mic)) { | |
78 | wpa_msg(sm->ctx->msg_ctx, MSG_ERROR, | |
79 | "WPA: Failed to generate EAPOL-Key version %d key_mgmt 0x%x MIC", | |
80 | ver, sm->key_mgmt); | |
81 | goto out; | |
82 | } | |
28fb9bb1 JM |
83 | if (ptk) |
84 | wpa_hexdump_key(MSG_DEBUG, "WPA: KCK", | |
85 | ptk->kck, ptk->kck_len); | |
2022f1d0 JM |
86 | wpa_hexdump(MSG_DEBUG, "WPA: Derived Key MIC", |
87 | key_mic, mic_len); | |
88 | } else { | |
89 | #ifdef CONFIG_FILS | |
90 | /* AEAD cipher - Key MIC field not used */ | |
91 | struct ieee802_1x_hdr *s_hdr, *hdr; | |
92 | struct wpa_eapol_key *s_key, *key; | |
93 | u8 *buf, *s_key_data, *key_data; | |
94 | size_t buf_len = msg_len + AES_BLOCK_SIZE; | |
95 | size_t key_data_len; | |
96 | u16 eapol_len; | |
97 | const u8 *aad[1]; | |
98 | size_t aad_len[1]; | |
99 | ||
100 | if (!ptk || !ptk->kek_len) | |
101 | goto out; | |
102 | ||
103 | key_data_len = msg_len - sizeof(struct ieee802_1x_hdr) - | |
104 | sizeof(struct wpa_eapol_key) - 2; | |
105 | ||
106 | buf = os_malloc(buf_len); | |
107 | if (!buf) | |
108 | goto out; | |
109 | ||
110 | os_memcpy(buf, msg, msg_len); | |
111 | hdr = (struct ieee802_1x_hdr *) buf; | |
112 | key = (struct wpa_eapol_key *) (hdr + 1); | |
113 | key_data = ((u8 *) (key + 1)) + 2; | |
114 | ||
115 | /* Update EAPOL header to include AES-SIV overhead */ | |
116 | eapol_len = be_to_host16(hdr->length); | |
117 | eapol_len += AES_BLOCK_SIZE; | |
118 | hdr->length = host_to_be16(eapol_len); | |
119 | ||
120 | /* Update Key Data Length field to include AES-SIV overhead */ | |
121 | WPA_PUT_BE16((u8 *) (key + 1), AES_BLOCK_SIZE + key_data_len); | |
122 | ||
123 | s_hdr = (struct ieee802_1x_hdr *) msg; | |
124 | s_key = (struct wpa_eapol_key *) (s_hdr + 1); | |
125 | s_key_data = ((u8 *) (s_key + 1)) + 2; | |
126 | ||
127 | wpa_hexdump_key(MSG_DEBUG, "WPA: Plaintext Key Data", | |
128 | s_key_data, key_data_len); | |
129 | ||
130 | wpa_hexdump_key(MSG_DEBUG, "WPA: KEK", ptk->kek, ptk->kek_len); | |
131 | /* AES-SIV AAD from EAPOL protocol version field (inclusive) to | |
132 | * to Key Data (exclusive). */ | |
133 | aad[0] = buf; | |
134 | aad_len[0] = key_data - buf; | |
135 | if (aes_siv_encrypt(ptk->kek, ptk->kek_len, | |
136 | s_key_data, key_data_len, | |
137 | 1, aad, aad_len, key_data) < 0) { | |
138 | os_free(buf); | |
139 | goto out; | |
140 | } | |
141 | ||
142 | wpa_hexdump(MSG_DEBUG, "WPA: Encrypted Key Data from SIV", | |
143 | key_data, AES_BLOCK_SIZE + key_data_len); | |
144 | ||
145 | os_free(msg); | |
146 | msg = buf; | |
147 | msg_len = buf_len; | |
148 | #else /* CONFIG_FILS */ | |
04b6b3ed | 149 | goto out; |
2022f1d0 | 150 | #endif /* CONFIG_FILS */ |
04b6b3ed | 151 | } |
2022f1d0 | 152 | |
6fc6879b | 153 | wpa_hexdump(MSG_MSGDUMP, "WPA: TX EAPOL-Key", msg, msg_len); |
c93b7e18 | 154 | ret = wpa_sm_ether_send(sm, dest, proto, msg, msg_len); |
6fc6879b | 155 | eapol_sm_notify_tx_eapol_key(sm->eapol); |
04b6b3ed | 156 | out: |
6fc6879b | 157 | os_free(msg); |
c93b7e18 | 158 | return ret; |
6fc6879b JM |
159 | } |
160 | ||
161 | ||
162 | /** | |
163 | * wpa_sm_key_request - Send EAPOL-Key Request | |
164 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
165 | * @error: Indicate whether this is an Michael MIC error report | |
166 | * @pairwise: 1 = error report for pairwise packet, 0 = for group packet | |
6fc6879b JM |
167 | * |
168 | * Send an EAPOL-Key Request to the current authenticator. This function is | |
169 | * used to request rekeying and it is usually called when a local Michael MIC | |
170 | * failure is detected. | |
171 | */ | |
172 | void wpa_sm_key_request(struct wpa_sm *sm, int error, int pairwise) | |
173 | { | |
5e3b5197 | 174 | size_t mic_len, hdrlen, rlen; |
6fc6879b JM |
175 | struct wpa_eapol_key *reply; |
176 | int key_info, ver; | |
6d014ffc | 177 | u8 bssid[ETH_ALEN], *rbuf, *key_mic, *mic; |
6fc6879b | 178 | |
929a2ea5 JM |
179 | if (sm->key_mgmt == WPA_KEY_MGMT_OSEN || |
180 | wpa_key_mgmt_suite_b(sm->key_mgmt)) | |
df0f01d9 JM |
181 | ver = WPA_KEY_INFO_TYPE_AKM_DEFINED; |
182 | else if (wpa_key_mgmt_ft(sm->key_mgmt) || | |
183 | wpa_key_mgmt_sha256(sm->key_mgmt)) | |
6fc6879b | 184 | ver = WPA_KEY_INFO_TYPE_AES_128_CMAC; |
eb7719ff | 185 | else if (sm->pairwise_cipher != WPA_CIPHER_TKIP) |
6fc6879b JM |
186 | ver = WPA_KEY_INFO_TYPE_HMAC_SHA1_AES; |
187 | else | |
188 | ver = WPA_KEY_INFO_TYPE_HMAC_MD5_RC4; | |
189 | ||
190 | if (wpa_sm_get_bssid(sm, bssid) < 0) { | |
f049052b BG |
191 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
192 | "Failed to read BSSID for EAPOL-Key request"); | |
6fc6879b JM |
193 | return; |
194 | } | |
195 | ||
5e3b5197 | 196 | mic_len = wpa_mic_len(sm->key_mgmt); |
6d014ffc | 197 | hdrlen = sizeof(*reply) + mic_len + 2; |
6fc6879b | 198 | rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL, |
5e3b5197 | 199 | hdrlen, &rlen, (void *) &reply); |
6fc6879b JM |
200 | if (rbuf == NULL) |
201 | return; | |
202 | ||
a14896e8 JM |
203 | reply->type = (sm->proto == WPA_PROTO_RSN || |
204 | sm->proto == WPA_PROTO_OSEN) ? | |
6fc6879b JM |
205 | EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA; |
206 | key_info = WPA_KEY_INFO_REQUEST | ver; | |
207 | if (sm->ptk_set) | |
4a26ccda JM |
208 | key_info |= WPA_KEY_INFO_SECURE; |
209 | if (sm->ptk_set && mic_len) | |
210 | key_info |= WPA_KEY_INFO_MIC; | |
6fc6879b JM |
211 | if (error) |
212 | key_info |= WPA_KEY_INFO_ERROR; | |
213 | if (pairwise) | |
214 | key_info |= WPA_KEY_INFO_KEY_TYPE; | |
215 | WPA_PUT_BE16(reply->key_info, key_info); | |
216 | WPA_PUT_BE16(reply->key_length, 0); | |
217 | os_memcpy(reply->replay_counter, sm->request_counter, | |
218 | WPA_REPLAY_COUNTER_LEN); | |
219 | inc_byte_array(sm->request_counter, WPA_REPLAY_COUNTER_LEN); | |
220 | ||
6d014ffc JM |
221 | mic = (u8 *) (reply + 1); |
222 | WPA_PUT_BE16(mic + mic_len, 0); | |
5e3b5197 JM |
223 | if (!(key_info & WPA_KEY_INFO_MIC)) |
224 | key_mic = NULL; | |
225 | else | |
6d014ffc | 226 | key_mic = mic; |
6fc6879b | 227 | |
f049052b BG |
228 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
229 | "WPA: Sending EAPOL-Key Request (error=%d " | |
230 | "pairwise=%d ptk_set=%d len=%lu)", | |
231 | error, pairwise, sm->ptk_set, (unsigned long) rlen); | |
1049af7e JM |
232 | wpa_eapol_key_send(sm, &sm->ptk, ver, bssid, ETH_P_EAPOL, rbuf, rlen, |
233 | key_mic); | |
6fc6879b JM |
234 | } |
235 | ||
236 | ||
b41f2684 CL |
237 | static void wpa_supplicant_key_mgmt_set_pmk(struct wpa_sm *sm) |
238 | { | |
239 | #ifdef CONFIG_IEEE80211R | |
240 | if (sm->key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) { | |
241 | if (wpa_sm_key_mgmt_set_pmk(sm, sm->xxkey, sm->xxkey_len)) | |
242 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
243 | "RSN: Cannot set low order 256 bits of MSK for key management offload"); | |
244 | } else { | |
245 | #endif /* CONFIG_IEEE80211R */ | |
246 | if (wpa_sm_key_mgmt_set_pmk(sm, sm->pmk, sm->pmk_len)) | |
247 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
248 | "RSN: Cannot set PMK for key management offload"); | |
249 | #ifdef CONFIG_IEEE80211R | |
250 | } | |
251 | #endif /* CONFIG_IEEE80211R */ | |
252 | } | |
253 | ||
254 | ||
6fc6879b JM |
255 | static int wpa_supplicant_get_pmk(struct wpa_sm *sm, |
256 | const unsigned char *src_addr, | |
257 | const u8 *pmkid) | |
258 | { | |
259 | int abort_cached = 0; | |
260 | ||
261 | if (pmkid && !sm->cur_pmksa) { | |
262 | /* When using drivers that generate RSN IE, wpa_supplicant may | |
263 | * not have enough time to get the association information | |
264 | * event before receiving this 1/4 message, so try to find a | |
265 | * matching PMKSA cache entry here. */ | |
96efeeb6 JM |
266 | sm->cur_pmksa = pmksa_cache_get(sm->pmksa, src_addr, pmkid, |
267 | NULL); | |
6fc6879b | 268 | if (sm->cur_pmksa) { |
f049052b BG |
269 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
270 | "RSN: found matching PMKID from PMKSA cache"); | |
6fc6879b | 271 | } else { |
f049052b BG |
272 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
273 | "RSN: no matching PMKID found"); | |
6fc6879b JM |
274 | abort_cached = 1; |
275 | } | |
276 | } | |
277 | ||
278 | if (pmkid && sm->cur_pmksa && | |
0d15b69f | 279 | os_memcmp_const(pmkid, sm->cur_pmksa->pmkid, PMKID_LEN) == 0) { |
6fc6879b JM |
280 | wpa_hexdump(MSG_DEBUG, "RSN: matched PMKID", pmkid, PMKID_LEN); |
281 | wpa_sm_set_pmk_from_pmksa(sm); | |
282 | wpa_hexdump_key(MSG_DEBUG, "RSN: PMK from PMKSA cache", | |
283 | sm->pmk, sm->pmk_len); | |
284 | eapol_sm_notify_cached(sm->eapol); | |
285 | #ifdef CONFIG_IEEE80211R | |
286 | sm->xxkey_len = 0; | |
287 | #endif /* CONFIG_IEEE80211R */ | |
56586197 | 288 | } else if (wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt) && sm->eapol) { |
6fc6879b | 289 | int res, pmk_len; |
207976f0 | 290 | |
834c5d68 | 291 | if (wpa_key_mgmt_sha384(sm->key_mgmt)) |
207976f0 JM |
292 | pmk_len = PMK_LEN_SUITE_B_192; |
293 | else | |
294 | pmk_len = PMK_LEN; | |
295 | res = eapol_sm_get_key(sm->eapol, sm->pmk, pmk_len); | |
6fc6879b | 296 | if (res) { |
207976f0 JM |
297 | if (pmk_len == PMK_LEN) { |
298 | /* | |
299 | * EAP-LEAP is an exception from other EAP | |
300 | * methods: it uses only 16-byte PMK. | |
301 | */ | |
302 | res = eapol_sm_get_key(sm->eapol, sm->pmk, 16); | |
303 | pmk_len = 16; | |
304 | } | |
6fc6879b JM |
305 | } else { |
306 | #ifdef CONFIG_IEEE80211R | |
307 | u8 buf[2 * PMK_LEN]; | |
308 | if (eapol_sm_get_key(sm->eapol, buf, 2 * PMK_LEN) == 0) | |
309 | { | |
310 | os_memcpy(sm->xxkey, buf + PMK_LEN, PMK_LEN); | |
311 | sm->xxkey_len = PMK_LEN; | |
312 | os_memset(buf, 0, sizeof(buf)); | |
313 | } | |
314 | #endif /* CONFIG_IEEE80211R */ | |
315 | } | |
316 | if (res == 0) { | |
a7f10d65 | 317 | struct rsn_pmksa_cache_entry *sa = NULL; |
869af307 JM |
318 | const u8 *fils_cache_id = NULL; |
319 | ||
320 | #ifdef CONFIG_FILS | |
321 | if (sm->fils_cache_id_set) | |
322 | fils_cache_id = sm->fils_cache_id; | |
323 | #endif /* CONFIG_FILS */ | |
324 | ||
6fc6879b JM |
325 | wpa_hexdump_key(MSG_DEBUG, "WPA: PMK from EAPOL state " |
326 | "machines", sm->pmk, pmk_len); | |
327 | sm->pmk_len = pmk_len; | |
b41f2684 | 328 | wpa_supplicant_key_mgmt_set_pmk(sm); |
715ed737 | 329 | if (sm->proto == WPA_PROTO_RSN && |
087a1f4e | 330 | !wpa_key_mgmt_suite_b(sm->key_mgmt) && |
715ed737 | 331 | !wpa_key_mgmt_ft(sm->key_mgmt)) { |
a7f10d65 | 332 | sa = pmksa_cache_add(sm->pmksa, |
70c93963 | 333 | sm->pmk, pmk_len, NULL, |
087a1f4e | 334 | NULL, 0, |
a7f10d65 JM |
335 | src_addr, sm->own_addr, |
336 | sm->network_ctx, | |
869af307 JM |
337 | sm->key_mgmt, |
338 | fils_cache_id); | |
f5a51b58 | 339 | } |
6fc6879b | 340 | if (!sm->cur_pmksa && pmkid && |
96efeeb6 JM |
341 | pmksa_cache_get(sm->pmksa, src_addr, pmkid, NULL)) |
342 | { | |
f049052b BG |
343 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
344 | "RSN: the new PMK matches with the " | |
345 | "PMKID"); | |
6fc6879b | 346 | abort_cached = 0; |
bddc51e8 JM |
347 | } else if (sa && !sm->cur_pmksa && pmkid) { |
348 | /* | |
349 | * It looks like the authentication server | |
350 | * derived mismatching MSK. This should not | |
351 | * really happen, but bugs happen.. There is not | |
352 | * much we can do here without knowing what | |
353 | * exactly caused the server to misbehave. | |
354 | */ | |
62417667 | 355 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
bddc51e8 JM |
356 | "RSN: PMKID mismatch - authentication server may have derived different MSK?!"); |
357 | return -1; | |
6fc6879b | 358 | } |
a7f10d65 JM |
359 | |
360 | if (!sm->cur_pmksa) | |
361 | sm->cur_pmksa = sa; | |
6fc6879b | 362 | } else { |
0f057fb2 | 363 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
6fc6879b | 364 | "WPA: Failed to get master session key from " |
f049052b BG |
365 | "EAPOL state machines - key handshake " |
366 | "aborted"); | |
6fc6879b | 367 | if (sm->cur_pmksa) { |
f049052b BG |
368 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
369 | "RSN: Cancelled PMKSA caching " | |
370 | "attempt"); | |
6fc6879b JM |
371 | sm->cur_pmksa = NULL; |
372 | abort_cached = 1; | |
1ac2d4a9 | 373 | } else if (!abort_cached) { |
6fc6879b JM |
374 | return -1; |
375 | } | |
376 | } | |
377 | } | |
378 | ||
715ed737 | 379 | if (abort_cached && wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt) && |
087a1f4e | 380 | !wpa_key_mgmt_suite_b(sm->key_mgmt) && |
a14896e8 JM |
381 | !wpa_key_mgmt_ft(sm->key_mgmt) && sm->key_mgmt != WPA_KEY_MGMT_OSEN) |
382 | { | |
6fc6879b JM |
383 | /* Send EAPOL-Start to trigger full EAP authentication. */ |
384 | u8 *buf; | |
385 | size_t buflen; | |
386 | ||
f049052b BG |
387 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
388 | "RSN: no PMKSA entry found - trigger " | |
389 | "full EAP authentication"); | |
6fc6879b JM |
390 | buf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_START, |
391 | NULL, 0, &buflen, NULL); | |
392 | if (buf) { | |
393 | wpa_sm_ether_send(sm, sm->bssid, ETH_P_EAPOL, | |
394 | buf, buflen); | |
395 | os_free(buf); | |
b4a1256d | 396 | return -2; |
6fc6879b JM |
397 | } |
398 | ||
399 | return -1; | |
400 | } | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | ||
406 | /** | |
407 | * wpa_supplicant_send_2_of_4 - Send message 2 of WPA/RSN 4-Way Handshake | |
408 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
409 | * @dst: Destination address for the frame | |
410 | * @key: Pointer to the EAPOL-Key frame header | |
411 | * @ver: Version bits from EAPOL-Key Key Info | |
412 | * @nonce: Nonce value for the EAPOL-Key frame | |
413 | * @wpa_ie: WPA/RSN IE | |
414 | * @wpa_ie_len: Length of the WPA/RSN IE | |
415 | * @ptk: PTK to use for keyed hash and encryption | |
c93b7e18 | 416 | * Returns: >= 0 on success, < 0 on failure |
6fc6879b JM |
417 | */ |
418 | int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, | |
419 | const struct wpa_eapol_key *key, | |
420 | int ver, const u8 *nonce, | |
421 | const u8 *wpa_ie, size_t wpa_ie_len, | |
422 | struct wpa_ptk *ptk) | |
423 | { | |
5e3b5197 | 424 | size_t mic_len, hdrlen, rlen; |
6fc6879b | 425 | struct wpa_eapol_key *reply; |
5e3b5197 | 426 | u8 *rbuf, *key_mic; |
26e23750 | 427 | u8 *rsn_ie_buf = NULL; |
4a26ccda | 428 | u16 key_info; |
6fc6879b JM |
429 | |
430 | if (wpa_ie == NULL) { | |
f049052b BG |
431 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: No wpa_ie set - " |
432 | "cannot generate msg 2/4"); | |
6fc6879b JM |
433 | return -1; |
434 | } | |
435 | ||
26e23750 JM |
436 | #ifdef CONFIG_IEEE80211R |
437 | if (wpa_key_mgmt_ft(sm->key_mgmt)) { | |
438 | int res; | |
439 | ||
55046414 JM |
440 | /* |
441 | * Add PMKR1Name into RSN IE (PMKID-List) and add MDIE and | |
442 | * FTIE from (Re)Association Response. | |
443 | */ | |
444 | rsn_ie_buf = os_malloc(wpa_ie_len + 2 + 2 + PMKID_LEN + | |
445 | sm->assoc_resp_ies_len); | |
26e23750 JM |
446 | if (rsn_ie_buf == NULL) |
447 | return -1; | |
448 | os_memcpy(rsn_ie_buf, wpa_ie, wpa_ie_len); | |
59e78c24 | 449 | res = wpa_insert_pmkid(rsn_ie_buf, &wpa_ie_len, |
26e23750 JM |
450 | sm->pmk_r1_name); |
451 | if (res < 0) { | |
452 | os_free(rsn_ie_buf); | |
453 | return -1; | |
454 | } | |
55046414 JM |
455 | |
456 | if (sm->assoc_resp_ies) { | |
457 | os_memcpy(rsn_ie_buf + wpa_ie_len, sm->assoc_resp_ies, | |
458 | sm->assoc_resp_ies_len); | |
459 | wpa_ie_len += sm->assoc_resp_ies_len; | |
460 | } | |
26e23750 JM |
461 | |
462 | wpa_ie = rsn_ie_buf; | |
26e23750 JM |
463 | } |
464 | #endif /* CONFIG_IEEE80211R */ | |
465 | ||
6fc6879b JM |
466 | wpa_hexdump(MSG_DEBUG, "WPA: WPA IE for msg 2/4", wpa_ie, wpa_ie_len); |
467 | ||
5e3b5197 | 468 | mic_len = wpa_mic_len(sm->key_mgmt); |
6d014ffc | 469 | hdrlen = sizeof(*reply) + mic_len + 2; |
6fc6879b | 470 | rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, |
5e3b5197 | 471 | NULL, hdrlen + wpa_ie_len, |
6fc6879b | 472 | &rlen, (void *) &reply); |
26e23750 JM |
473 | if (rbuf == NULL) { |
474 | os_free(rsn_ie_buf); | |
6fc6879b | 475 | return -1; |
26e23750 | 476 | } |
6fc6879b | 477 | |
a14896e8 JM |
478 | reply->type = (sm->proto == WPA_PROTO_RSN || |
479 | sm->proto == WPA_PROTO_OSEN) ? | |
6fc6879b | 480 | EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA; |
4a26ccda JM |
481 | key_info = ver | WPA_KEY_INFO_KEY_TYPE; |
482 | if (mic_len) | |
483 | key_info |= WPA_KEY_INFO_MIC; | |
2022f1d0 JM |
484 | else |
485 | key_info |= WPA_KEY_INFO_ENCR_KEY_DATA; | |
4a26ccda | 486 | WPA_PUT_BE16(reply->key_info, key_info); |
a14896e8 | 487 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) |
6fc6879b JM |
488 | WPA_PUT_BE16(reply->key_length, 0); |
489 | else | |
490 | os_memcpy(reply->key_length, key->key_length, 2); | |
491 | os_memcpy(reply->replay_counter, key->replay_counter, | |
492 | WPA_REPLAY_COUNTER_LEN); | |
bc8318ac JM |
493 | wpa_hexdump(MSG_DEBUG, "WPA: Replay Counter", reply->replay_counter, |
494 | WPA_REPLAY_COUNTER_LEN); | |
6fc6879b | 495 | |
6d014ffc JM |
496 | key_mic = (u8 *) (reply + 1); |
497 | WPA_PUT_BE16(key_mic + mic_len, wpa_ie_len); /* Key Data Length */ | |
498 | os_memcpy(key_mic + mic_len + 2, wpa_ie, wpa_ie_len); /* Key Data */ | |
26e23750 | 499 | os_free(rsn_ie_buf); |
6fc6879b JM |
500 | |
501 | os_memcpy(reply->key_nonce, nonce, WPA_NONCE_LEN); | |
502 | ||
f049052b | 503 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 2/4"); |
1049af7e JM |
504 | return wpa_eapol_key_send(sm, ptk, ver, dst, ETH_P_EAPOL, rbuf, rlen, |
505 | key_mic); | |
6fc6879b JM |
506 | } |
507 | ||
508 | ||
509 | static int wpa_derive_ptk(struct wpa_sm *sm, const unsigned char *src_addr, | |
98cd3d1c | 510 | const struct wpa_eapol_key *key, struct wpa_ptk *ptk) |
6fc6879b JM |
511 | { |
512 | #ifdef CONFIG_IEEE80211R | |
56586197 | 513 | if (wpa_key_mgmt_ft(sm->key_mgmt)) |
98cd3d1c | 514 | return wpa_derive_ptk_ft(sm, src_addr, key, ptk); |
6fc6879b JM |
515 | #endif /* CONFIG_IEEE80211R */ |
516 | ||
98cd3d1c JM |
517 | return wpa_pmk_to_ptk(sm->pmk, sm->pmk_len, "Pairwise key expansion", |
518 | sm->own_addr, sm->bssid, sm->snonce, | |
519 | key->key_nonce, ptk, sm->key_mgmt, | |
520 | sm->pairwise_cipher); | |
6fc6879b JM |
521 | } |
522 | ||
523 | ||
524 | static void wpa_supplicant_process_1_of_4(struct wpa_sm *sm, | |
525 | const unsigned char *src_addr, | |
526 | const struct wpa_eapol_key *key, | |
e6270129 JM |
527 | u16 ver, const u8 *key_data, |
528 | size_t key_data_len) | |
6fc6879b JM |
529 | { |
530 | struct wpa_eapol_ie_parse ie; | |
531 | struct wpa_ptk *ptk; | |
b4a1256d | 532 | int res; |
25ef8529 JM |
533 | u8 *kde, *kde_buf = NULL; |
534 | size_t kde_len; | |
6fc6879b JM |
535 | |
536 | if (wpa_sm_get_network_ctx(sm) == NULL) { | |
f049052b BG |
537 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: No SSID info " |
538 | "found (msg 1 of 4)"); | |
6fc6879b JM |
539 | return; |
540 | } | |
541 | ||
542 | wpa_sm_set_state(sm, WPA_4WAY_HANDSHAKE); | |
f049052b BG |
543 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 1 of 4-Way " |
544 | "Handshake from " MACSTR " (ver=%d)", MAC2STR(src_addr), ver); | |
6fc6879b JM |
545 | |
546 | os_memset(&ie, 0, sizeof(ie)); | |
547 | ||
a14896e8 | 548 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) { |
6fc6879b | 549 | /* RSN: msg 1/4 should contain PMKID for the selected PMK */ |
e6270129 JM |
550 | wpa_hexdump(MSG_DEBUG, "RSN: msg 1/4 key data", |
551 | key_data, key_data_len); | |
552 | if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0) | |
d627a939 | 553 | goto failed; |
6fc6879b JM |
554 | if (ie.pmkid) { |
555 | wpa_hexdump(MSG_DEBUG, "RSN: PMKID from " | |
556 | "Authenticator", ie.pmkid, PMKID_LEN); | |
557 | } | |
558 | } | |
6fc6879b | 559 | |
b4a1256d JM |
560 | res = wpa_supplicant_get_pmk(sm, src_addr, ie.pmkid); |
561 | if (res == -2) { | |
f049052b BG |
562 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "RSN: Do not reply to " |
563 | "msg 1/4 - requesting full EAP authentication"); | |
b4a1256d JM |
564 | return; |
565 | } | |
566 | if (res) | |
83935317 | 567 | goto failed; |
6fc6879b JM |
568 | |
569 | if (sm->renew_snonce) { | |
3642c431 | 570 | if (random_get_bytes(sm->snonce, WPA_NONCE_LEN)) { |
0f057fb2 | 571 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
6fc6879b | 572 | "WPA: Failed to get random data for SNonce"); |
83935317 | 573 | goto failed; |
6fc6879b JM |
574 | } |
575 | sm->renew_snonce = 0; | |
576 | wpa_hexdump(MSG_DEBUG, "WPA: Renewed SNonce", | |
577 | sm->snonce, WPA_NONCE_LEN); | |
578 | } | |
579 | ||
580 | /* Calculate PTK which will be stored as a temporary PTK until it has | |
581 | * been verified when processing message 3/4. */ | |
582 | ptk = &sm->tptk; | |
583 | wpa_derive_ptk(sm, src_addr, key, ptk); | |
3b9c5176 | 584 | if (sm->pairwise_cipher == WPA_CIPHER_TKIP) { |
d2c33b91 | 585 | u8 buf[8]; |
3b9c5176 | 586 | /* Supplicant: swap tx/rx Mic keys */ |
98cd3d1c JM |
587 | os_memcpy(buf, &ptk->tk[16], 8); |
588 | os_memcpy(&ptk->tk[16], &ptk->tk[24], 8); | |
589 | os_memcpy(&ptk->tk[24], buf, 8); | |
d2c33b91 | 590 | os_memset(buf, 0, sizeof(buf)); |
3b9c5176 | 591 | } |
6fc6879b | 592 | sm->tptk_set = 1; |
ad00d64e | 593 | sm->tk_to_set = 1; |
6fc6879b | 594 | |
25ef8529 JM |
595 | kde = sm->assoc_wpa_ie; |
596 | kde_len = sm->assoc_wpa_ie_len; | |
597 | ||
598 | #ifdef CONFIG_P2P | |
599 | if (sm->p2p) { | |
600 | kde_buf = os_malloc(kde_len + 2 + RSN_SELECTOR_LEN + 1); | |
601 | if (kde_buf) { | |
602 | u8 *pos; | |
603 | wpa_printf(MSG_DEBUG, "P2P: Add IP Address Request KDE " | |
604 | "into EAPOL-Key 2/4"); | |
605 | os_memcpy(kde_buf, kde, kde_len); | |
606 | kde = kde_buf; | |
607 | pos = kde + kde_len; | |
608 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
609 | *pos++ = RSN_SELECTOR_LEN + 1; | |
610 | RSN_SELECTOR_PUT(pos, WFA_KEY_DATA_IP_ADDR_REQ); | |
611 | pos += RSN_SELECTOR_LEN; | |
612 | *pos++ = 0x01; | |
613 | kde_len = pos - kde; | |
614 | } | |
615 | } | |
616 | #endif /* CONFIG_P2P */ | |
617 | ||
6fc6879b | 618 | if (wpa_supplicant_send_2_of_4(sm, sm->bssid, key, ver, sm->snonce, |
c93b7e18 | 619 | kde, kde_len, ptk) < 0) |
83935317 | 620 | goto failed; |
6fc6879b | 621 | |
25ef8529 | 622 | os_free(kde_buf); |
6fc6879b | 623 | os_memcpy(sm->anonce, key->key_nonce, WPA_NONCE_LEN); |
83935317 JM |
624 | return; |
625 | ||
626 | failed: | |
25ef8529 | 627 | os_free(kde_buf); |
83935317 | 628 | wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED); |
6fc6879b JM |
629 | } |
630 | ||
631 | ||
632 | static void wpa_sm_start_preauth(void *eloop_ctx, void *timeout_ctx) | |
633 | { | |
634 | struct wpa_sm *sm = eloop_ctx; | |
635 | rsn_preauth_candidate_process(sm); | |
636 | } | |
637 | ||
638 | ||
639 | static void wpa_supplicant_key_neg_complete(struct wpa_sm *sm, | |
640 | const u8 *addr, int secure) | |
641 | { | |
0f057fb2 JM |
642 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
643 | "WPA: Key negotiation completed with " | |
6fc6879b JM |
644 | MACSTR " [PTK=%s GTK=%s]", MAC2STR(addr), |
645 | wpa_cipher_txt(sm->pairwise_cipher), | |
646 | wpa_cipher_txt(sm->group_cipher)); | |
6fc6879b JM |
647 | wpa_sm_cancel_auth_timeout(sm); |
648 | wpa_sm_set_state(sm, WPA_COMPLETED); | |
649 | ||
650 | if (secure) { | |
651 | wpa_sm_mlme_setprotection( | |
652 | sm, addr, MLME_SETPROTECTION_PROTECT_TYPE_RX_TX, | |
653 | MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); | |
654 | eapol_sm_notify_portValid(sm->eapol, TRUE); | |
a1ea1b45 JM |
655 | if (wpa_key_mgmt_wpa_psk(sm->key_mgmt) || |
656 | sm->key_mgmt == WPA_KEY_MGMT_OWE) | |
6fc6879b JM |
657 | eapol_sm_notify_eap_success(sm->eapol, TRUE); |
658 | /* | |
659 | * Start preauthentication after a short wait to avoid a | |
660 | * possible race condition between the data receive and key | |
661 | * configuration after the 4-Way Handshake. This increases the | |
ffbf1eaa | 662 | * likelihood of the first preauth EAPOL-Start frame getting to |
6fc6879b JM |
663 | * the target AP. |
664 | */ | |
665 | eloop_register_timeout(1, 0, wpa_sm_start_preauth, sm, NULL); | |
666 | } | |
667 | ||
668 | if (sm->cur_pmksa && sm->cur_pmksa->opportunistic) { | |
f049052b BG |
669 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
670 | "RSN: Authenticator accepted " | |
671 | "opportunistic PMKSA entry - marking it valid"); | |
6fc6879b JM |
672 | sm->cur_pmksa->opportunistic = 0; |
673 | } | |
674 | ||
675 | #ifdef CONFIG_IEEE80211R | |
56586197 | 676 | if (wpa_key_mgmt_ft(sm->key_mgmt)) { |
6fc6879b | 677 | /* Prepare for the next transition */ |
76b7981d | 678 | wpa_ft_prepare_auth_request(sm, NULL); |
6fc6879b JM |
679 | } |
680 | #endif /* CONFIG_IEEE80211R */ | |
681 | } | |
682 | ||
683 | ||
581a8cde JM |
684 | static void wpa_sm_rekey_ptk(void *eloop_ctx, void *timeout_ctx) |
685 | { | |
686 | struct wpa_sm *sm = eloop_ctx; | |
f049052b | 687 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Request PTK rekeying"); |
581a8cde JM |
688 | wpa_sm_key_request(sm, 0, 1); |
689 | } | |
690 | ||
691 | ||
6fc6879b JM |
692 | static int wpa_supplicant_install_ptk(struct wpa_sm *sm, |
693 | const struct wpa_eapol_key *key) | |
694 | { | |
695 | int keylen, rsclen; | |
71934751 | 696 | enum wpa_alg alg; |
6fc6879b | 697 | const u8 *key_rsc; |
6fc6879b | 698 | |
ad00d64e JM |
699 | if (!sm->tk_to_set) { |
700 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
701 | "WPA: Do not re-install same PTK to the driver"); | |
702 | return 0; | |
703 | } | |
704 | ||
f049052b BG |
705 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
706 | "WPA: Installing PTK to the driver"); | |
6fc6879b | 707 | |
c3550295 | 708 | if (sm->pairwise_cipher == WPA_CIPHER_NONE) { |
f049052b BG |
709 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Pairwise Cipher " |
710 | "Suite: NONE - do not use pairwise keys"); | |
6fc6879b | 711 | return 0; |
c3550295 JM |
712 | } |
713 | ||
714 | if (!wpa_cipher_valid_pairwise(sm->pairwise_cipher)) { | |
f049052b BG |
715 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
716 | "WPA: Unsupported pairwise cipher %d", | |
717 | sm->pairwise_cipher); | |
6fc6879b JM |
718 | return -1; |
719 | } | |
720 | ||
c3550295 JM |
721 | alg = wpa_cipher_to_alg(sm->pairwise_cipher); |
722 | keylen = wpa_cipher_key_len(sm->pairwise_cipher); | |
723 | rsclen = wpa_cipher_rsc_len(sm->pairwise_cipher); | |
724 | ||
a14896e8 | 725 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) { |
6fc6879b JM |
726 | key_rsc = null_rsc; |
727 | } else { | |
728 | key_rsc = key->key_rsc; | |
729 | wpa_hexdump(MSG_DEBUG, "WPA: RSC", key_rsc, rsclen); | |
730 | } | |
731 | ||
732 | if (wpa_sm_set_key(sm, alg, sm->bssid, 0, 1, key_rsc, rsclen, | |
98cd3d1c | 733 | sm->ptk.tk, keylen) < 0) { |
f049052b BG |
734 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
735 | "WPA: Failed to set PTK to the " | |
736 | "driver (alg=%d keylen=%d bssid=" MACSTR ")", | |
737 | alg, keylen, MAC2STR(sm->bssid)); | |
6fc6879b JM |
738 | return -1; |
739 | } | |
581a8cde | 740 | |
7d711541 | 741 | /* TK is not needed anymore in supplicant */ |
98cd3d1c | 742 | os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN); |
ad00d64e | 743 | sm->tk_to_set = 0; |
7d711541 | 744 | |
581a8cde JM |
745 | if (sm->wpa_ptk_rekey) { |
746 | eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL); | |
747 | eloop_register_timeout(sm->wpa_ptk_rekey, 0, wpa_sm_rekey_ptk, | |
748 | sm, NULL); | |
749 | } | |
750 | ||
6fc6879b JM |
751 | return 0; |
752 | } | |
753 | ||
754 | ||
f049052b BG |
755 | static int wpa_supplicant_check_group_cipher(struct wpa_sm *sm, |
756 | int group_cipher, | |
6fc6879b | 757 | int keylen, int maxkeylen, |
71934751 JM |
758 | int *key_rsc_len, |
759 | enum wpa_alg *alg) | |
6fc6879b | 760 | { |
c3550295 | 761 | int klen; |
6fc6879b | 762 | |
c3550295 JM |
763 | *alg = wpa_cipher_to_alg(group_cipher); |
764 | if (*alg == WPA_ALG_NONE) { | |
f049052b BG |
765 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
766 | "WPA: Unsupported Group Cipher %d", | |
767 | group_cipher); | |
6fc6879b JM |
768 | return -1; |
769 | } | |
c3550295 | 770 | *key_rsc_len = wpa_cipher_rsc_len(group_cipher); |
6fc6879b | 771 | |
c3550295 JM |
772 | klen = wpa_cipher_key_len(group_cipher); |
773 | if (keylen != klen || maxkeylen < klen) { | |
f049052b BG |
774 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
775 | "WPA: Unsupported %s Group Cipher key length %d (%d)", | |
776 | wpa_cipher_txt(group_cipher), keylen, maxkeylen); | |
c3550295 | 777 | return -1; |
6fc6879b | 778 | } |
c3550295 | 779 | return 0; |
6fc6879b JM |
780 | } |
781 | ||
782 | ||
783 | struct wpa_gtk_data { | |
71934751 | 784 | enum wpa_alg alg; |
6fc6879b JM |
785 | int tx, key_rsc_len, keyidx; |
786 | u8 gtk[32]; | |
787 | int gtk_len; | |
788 | }; | |
789 | ||
790 | ||
791 | static int wpa_supplicant_install_gtk(struct wpa_sm *sm, | |
792 | const struct wpa_gtk_data *gd, | |
793 | const u8 *key_rsc) | |
794 | { | |
795 | const u8 *_gtk = gd->gtk; | |
796 | u8 gtk_buf[32]; | |
797 | ||
798 | wpa_hexdump_key(MSG_DEBUG, "WPA: Group Key", gd->gtk, gd->gtk_len); | |
f049052b BG |
799 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
800 | "WPA: Installing GTK to the driver (keyidx=%d tx=%d len=%d)", | |
801 | gd->keyidx, gd->tx, gd->gtk_len); | |
6fc6879b JM |
802 | wpa_hexdump(MSG_DEBUG, "WPA: RSC", key_rsc, gd->key_rsc_len); |
803 | if (sm->group_cipher == WPA_CIPHER_TKIP) { | |
804 | /* Swap Tx/Rx keys for Michael MIC */ | |
805 | os_memcpy(gtk_buf, gd->gtk, 16); | |
806 | os_memcpy(gtk_buf + 16, gd->gtk + 24, 8); | |
807 | os_memcpy(gtk_buf + 24, gd->gtk + 16, 8); | |
808 | _gtk = gtk_buf; | |
809 | } | |
810 | if (sm->pairwise_cipher == WPA_CIPHER_NONE) { | |
0382097e | 811 | if (wpa_sm_set_key(sm, gd->alg, NULL, |
6fc6879b JM |
812 | gd->keyidx, 1, key_rsc, gd->key_rsc_len, |
813 | _gtk, gd->gtk_len) < 0) { | |
f049052b BG |
814 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
815 | "WPA: Failed to set GTK to the driver " | |
816 | "(Group only)"); | |
d2c33b91 | 817 | os_memset(gtk_buf, 0, sizeof(gtk_buf)); |
6fc6879b JM |
818 | return -1; |
819 | } | |
0382097e | 820 | } else if (wpa_sm_set_key(sm, gd->alg, broadcast_ether_addr, |
6fc6879b JM |
821 | gd->keyidx, gd->tx, key_rsc, gd->key_rsc_len, |
822 | _gtk, gd->gtk_len) < 0) { | |
f049052b BG |
823 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
824 | "WPA: Failed to set GTK to " | |
825 | "the driver (alg=%d keylen=%d keyidx=%d)", | |
826 | gd->alg, gd->gtk_len, gd->keyidx); | |
d2c33b91 | 827 | os_memset(gtk_buf, 0, sizeof(gtk_buf)); |
6fc6879b JM |
828 | return -1; |
829 | } | |
d2c33b91 | 830 | os_memset(gtk_buf, 0, sizeof(gtk_buf)); |
6fc6879b JM |
831 | |
832 | return 0; | |
833 | } | |
834 | ||
835 | ||
836 | static int wpa_supplicant_gtk_tx_bit_workaround(const struct wpa_sm *sm, | |
837 | int tx) | |
838 | { | |
839 | if (tx && sm->pairwise_cipher != WPA_CIPHER_NONE) { | |
840 | /* Ignore Tx bit for GTK if a pairwise key is used. One AP | |
841 | * seemed to set this bit (incorrectly, since Tx is only when | |
842 | * doing Group Key only APs) and without this workaround, the | |
843 | * data connection does not work because wpa_supplicant | |
844 | * configured non-zero keyidx to be used for unicast. */ | |
f049052b BG |
845 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
846 | "WPA: Tx bit set for GTK, but pairwise " | |
847 | "keys are used - ignore Tx bit"); | |
6fc6879b JM |
848 | return 0; |
849 | } | |
850 | return tx; | |
851 | } | |
852 | ||
853 | ||
73ed03f3 MS |
854 | static int wpa_supplicant_rsc_relaxation(const struct wpa_sm *sm, |
855 | const u8 *rsc) | |
856 | { | |
857 | int rsclen; | |
858 | ||
859 | if (!sm->wpa_rsc_relaxation) | |
860 | return 0; | |
861 | ||
862 | rsclen = wpa_cipher_rsc_len(sm->group_cipher); | |
863 | ||
864 | /* | |
865 | * Try to detect RSC (endian) corruption issue where the AP sends | |
866 | * the RSC bytes in EAPOL-Key message in the wrong order, both if | |
867 | * it's actually a 6-byte field (as it should be) and if it treats | |
868 | * it as an 8-byte field. | |
869 | * An AP model known to have this bug is the Sapido RB-1632. | |
870 | */ | |
871 | if (rsclen == 6 && ((rsc[5] && !rsc[0]) || rsc[6] || rsc[7])) { | |
872 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, | |
873 | "RSC %02x%02x%02x%02x%02x%02x%02x%02x is likely bogus, using 0", | |
874 | rsc[0], rsc[1], rsc[2], rsc[3], | |
875 | rsc[4], rsc[5], rsc[6], rsc[7]); | |
876 | ||
877 | return 1; | |
878 | } | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | ||
6fc6879b JM |
884 | static int wpa_supplicant_pairwise_gtk(struct wpa_sm *sm, |
885 | const struct wpa_eapol_key *key, | |
886 | const u8 *gtk, size_t gtk_len, | |
887 | int key_info) | |
888 | { | |
6fc6879b | 889 | struct wpa_gtk_data gd; |
73ed03f3 | 890 | const u8 *key_rsc; |
6fc6879b JM |
891 | |
892 | /* | |
893 | * IEEE Std 802.11i-2004 - 8.5.2 EAPOL-Key frames - Figure 43x | |
894 | * GTK KDE format: | |
895 | * KeyID[bits 0-1], Tx [bit 2], Reserved [bits 3-7] | |
896 | * Reserved [bits 0-7] | |
897 | * GTK | |
898 | */ | |
899 | ||
900 | os_memset(&gd, 0, sizeof(gd)); | |
901 | wpa_hexdump_key(MSG_DEBUG, "RSN: received GTK in pairwise handshake", | |
902 | gtk, gtk_len); | |
903 | ||
904 | if (gtk_len < 2 || gtk_len - 2 > sizeof(gd.gtk)) | |
905 | return -1; | |
906 | ||
907 | gd.keyidx = gtk[0] & 0x3; | |
908 | gd.tx = wpa_supplicant_gtk_tx_bit_workaround(sm, | |
909 | !!(gtk[0] & BIT(2))); | |
910 | gtk += 2; | |
911 | gtk_len -= 2; | |
912 | ||
913 | os_memcpy(gd.gtk, gtk, gtk_len); | |
914 | gd.gtk_len = gtk_len; | |
915 | ||
73ed03f3 MS |
916 | key_rsc = key->key_rsc; |
917 | if (wpa_supplicant_rsc_relaxation(sm, key->key_rsc)) | |
918 | key_rsc = null_rsc; | |
919 | ||
dff1e285 JM |
920 | if (sm->group_cipher != WPA_CIPHER_GTK_NOT_USED && |
921 | (wpa_supplicant_check_group_cipher(sm, sm->group_cipher, | |
922 | gtk_len, gtk_len, | |
923 | &gd.key_rsc_len, &gd.alg) || | |
73ed03f3 | 924 | wpa_supplicant_install_gtk(sm, &gd, key_rsc))) { |
f049052b BG |
925 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
926 | "RSN: Failed to install GTK"); | |
d2c33b91 | 927 | os_memset(&gd, 0, sizeof(gd)); |
6fc6879b JM |
928 | return -1; |
929 | } | |
d2c33b91 | 930 | os_memset(&gd, 0, sizeof(gd)); |
6fc6879b JM |
931 | |
932 | wpa_supplicant_key_neg_complete(sm, sm->bssid, | |
933 | key_info & WPA_KEY_INFO_SECURE); | |
934 | return 0; | |
6fc6879b JM |
935 | } |
936 | ||
937 | ||
938 | static int ieee80211w_set_keys(struct wpa_sm *sm, | |
939 | struct wpa_eapol_ie_parse *ie) | |
940 | { | |
941 | #ifdef CONFIG_IEEE80211W | |
8dd9f9cd | 942 | if (!wpa_cipher_valid_mgmt_group(sm->mgmt_group_cipher)) |
6fc6879b JM |
943 | return 0; |
944 | ||
945 | if (ie->igtk) { | |
8dd9f9cd | 946 | size_t len; |
6fc6879b JM |
947 | const struct wpa_igtk_kde *igtk; |
948 | u16 keyidx; | |
8dd9f9cd JM |
949 | len = wpa_cipher_key_len(sm->mgmt_group_cipher); |
950 | if (ie->igtk_len != WPA_IGTK_KDE_PREFIX_LEN + len) | |
6fc6879b JM |
951 | return -1; |
952 | igtk = (const struct wpa_igtk_kde *) ie->igtk; | |
953 | keyidx = WPA_GET_LE16(igtk->keyid); | |
f049052b BG |
954 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: IGTK keyid %d " |
955 | "pn %02x%02x%02x%02x%02x%02x", | |
956 | keyidx, MAC2STR(igtk->pn)); | |
6fc6879b | 957 | wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK", |
8dd9f9cd | 958 | igtk->igtk, len); |
6fc6879b | 959 | if (keyidx > 4095) { |
f049052b BG |
960 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
961 | "WPA: Invalid IGTK KeyID %d", keyidx); | |
6fc6879b JM |
962 | return -1; |
963 | } | |
8dd9f9cd JM |
964 | if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher), |
965 | broadcast_ether_addr, | |
6fc6879b | 966 | keyidx, 0, igtk->pn, sizeof(igtk->pn), |
8dd9f9cd | 967 | igtk->igtk, len) < 0) { |
f049052b BG |
968 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
969 | "WPA: Failed to configure IGTK to the driver"); | |
6fc6879b JM |
970 | return -1; |
971 | } | |
972 | } | |
973 | ||
974 | return 0; | |
975 | #else /* CONFIG_IEEE80211W */ | |
976 | return 0; | |
977 | #endif /* CONFIG_IEEE80211W */ | |
978 | } | |
979 | ||
980 | ||
981 | static void wpa_report_ie_mismatch(struct wpa_sm *sm, | |
982 | const char *reason, const u8 *src_addr, | |
983 | const u8 *wpa_ie, size_t wpa_ie_len, | |
984 | const u8 *rsn_ie, size_t rsn_ie_len) | |
985 | { | |
0f057fb2 | 986 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, "WPA: %s (src=" MACSTR ")", |
6fc6879b JM |
987 | reason, MAC2STR(src_addr)); |
988 | ||
989 | if (sm->ap_wpa_ie) { | |
990 | wpa_hexdump(MSG_INFO, "WPA: WPA IE in Beacon/ProbeResp", | |
991 | sm->ap_wpa_ie, sm->ap_wpa_ie_len); | |
992 | } | |
993 | if (wpa_ie) { | |
994 | if (!sm->ap_wpa_ie) { | |
f049052b BG |
995 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
996 | "WPA: No WPA IE in Beacon/ProbeResp"); | |
6fc6879b JM |
997 | } |
998 | wpa_hexdump(MSG_INFO, "WPA: WPA IE in 3/4 msg", | |
999 | wpa_ie, wpa_ie_len); | |
1000 | } | |
1001 | ||
1002 | if (sm->ap_rsn_ie) { | |
1003 | wpa_hexdump(MSG_INFO, "WPA: RSN IE in Beacon/ProbeResp", | |
1004 | sm->ap_rsn_ie, sm->ap_rsn_ie_len); | |
1005 | } | |
1006 | if (rsn_ie) { | |
1007 | if (!sm->ap_rsn_ie) { | |
f049052b BG |
1008 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1009 | "WPA: No RSN IE in Beacon/ProbeResp"); | |
6fc6879b JM |
1010 | } |
1011 | wpa_hexdump(MSG_INFO, "WPA: RSN IE in 3/4 msg", | |
1012 | rsn_ie, rsn_ie_len); | |
1013 | } | |
1014 | ||
3da372fa | 1015 | wpa_sm_deauthenticate(sm, WLAN_REASON_IE_IN_4WAY_DIFFERS); |
6fc6879b JM |
1016 | } |
1017 | ||
1018 | ||
5af8187e JM |
1019 | #ifdef CONFIG_IEEE80211R |
1020 | ||
1021 | static int ft_validate_mdie(struct wpa_sm *sm, | |
1022 | const unsigned char *src_addr, | |
3b4f6dac JM |
1023 | struct wpa_eapol_ie_parse *ie, |
1024 | const u8 *assoc_resp_mdie) | |
5af8187e JM |
1025 | { |
1026 | struct rsn_mdie *mdie; | |
1027 | ||
5af8187e JM |
1028 | mdie = (struct rsn_mdie *) (ie->mdie + 2); |
1029 | if (ie->mdie == NULL || ie->mdie_len < 2 + sizeof(*mdie) || | |
1030 | os_memcmp(mdie->mobility_domain, sm->mobility_domain, | |
1031 | MOBILITY_DOMAIN_ID_LEN) != 0) { | |
f049052b BG |
1032 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: MDIE in msg 3/4 did " |
1033 | "not match with the current mobility domain"); | |
5af8187e JM |
1034 | return -1; |
1035 | } | |
1036 | ||
3b4f6dac JM |
1037 | if (assoc_resp_mdie && |
1038 | (assoc_resp_mdie[1] != ie->mdie[1] || | |
1039 | os_memcmp(assoc_resp_mdie, ie->mdie, 2 + ie->mdie[1]) != 0)) { | |
f049052b | 1040 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: MDIE mismatch"); |
3b4f6dac JM |
1041 | wpa_hexdump(MSG_DEBUG, "FT: MDIE in EAPOL-Key msg 3/4", |
1042 | ie->mdie, 2 + ie->mdie[1]); | |
1043 | wpa_hexdump(MSG_DEBUG, "FT: MDIE in (Re)Association Response", | |
1044 | assoc_resp_mdie, 2 + assoc_resp_mdie[1]); | |
1045 | return -1; | |
1046 | } | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
1051 | ||
1052 | static int ft_validate_ftie(struct wpa_sm *sm, | |
1053 | const unsigned char *src_addr, | |
1054 | struct wpa_eapol_ie_parse *ie, | |
1055 | const u8 *assoc_resp_ftie) | |
1056 | { | |
1057 | if (ie->ftie == NULL) { | |
f049052b BG |
1058 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1059 | "FT: No FTIE in EAPOL-Key msg 3/4"); | |
3b4f6dac JM |
1060 | return -1; |
1061 | } | |
1062 | ||
1063 | if (assoc_resp_ftie == NULL) | |
1064 | return 0; | |
1065 | ||
1066 | if (assoc_resp_ftie[1] != ie->ftie[1] || | |
1067 | os_memcmp(assoc_resp_ftie, ie->ftie, 2 + ie->ftie[1]) != 0) { | |
f049052b | 1068 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: FTIE mismatch"); |
3b4f6dac JM |
1069 | wpa_hexdump(MSG_DEBUG, "FT: FTIE in EAPOL-Key msg 3/4", |
1070 | ie->ftie, 2 + ie->ftie[1]); | |
1071 | wpa_hexdump(MSG_DEBUG, "FT: FTIE in (Re)Association Response", | |
1072 | assoc_resp_ftie, 2 + assoc_resp_ftie[1]); | |
1073 | return -1; | |
1074 | } | |
1075 | ||
5af8187e JM |
1076 | return 0; |
1077 | } | |
1078 | ||
1079 | ||
1080 | static int ft_validate_rsnie(struct wpa_sm *sm, | |
1081 | const unsigned char *src_addr, | |
1082 | struct wpa_eapol_ie_parse *ie) | |
1083 | { | |
1084 | struct wpa_ie_data rsn; | |
1085 | ||
1086 | if (!ie->rsn_ie) | |
1087 | return 0; | |
1088 | ||
1089 | /* | |
1090 | * Verify that PMKR1Name from EAPOL-Key message 3/4 | |
1091 | * matches with the value we derived. | |
1092 | */ | |
1093 | if (wpa_parse_wpa_ie_rsn(ie->rsn_ie, ie->rsn_ie_len, &rsn) < 0 || | |
1094 | rsn.num_pmkid != 1 || rsn.pmkid == NULL) { | |
f049052b BG |
1095 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "FT: No PMKR1Name in " |
1096 | "FT 4-way handshake message 3/4"); | |
5af8187e JM |
1097 | return -1; |
1098 | } | |
1099 | ||
0d15b69f JM |
1100 | if (os_memcmp_const(rsn.pmkid, sm->pmk_r1_name, WPA_PMK_NAME_LEN) != 0) |
1101 | { | |
f049052b BG |
1102 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1103 | "FT: PMKR1Name mismatch in " | |
1104 | "FT 4-way handshake message 3/4"); | |
5af8187e JM |
1105 | wpa_hexdump(MSG_DEBUG, "FT: PMKR1Name from Authenticator", |
1106 | rsn.pmkid, WPA_PMK_NAME_LEN); | |
1107 | wpa_hexdump(MSG_DEBUG, "FT: Derived PMKR1Name", | |
1108 | sm->pmk_r1_name, WPA_PMK_NAME_LEN); | |
1109 | return -1; | |
1110 | } | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | ||
1116 | static int wpa_supplicant_validate_ie_ft(struct wpa_sm *sm, | |
1117 | const unsigned char *src_addr, | |
1118 | struct wpa_eapol_ie_parse *ie) | |
1119 | { | |
3b4f6dac JM |
1120 | const u8 *pos, *end, *mdie = NULL, *ftie = NULL; |
1121 | ||
1122 | if (sm->assoc_resp_ies) { | |
1123 | pos = sm->assoc_resp_ies; | |
1124 | end = pos + sm->assoc_resp_ies_len; | |
2461724c JM |
1125 | while (end - pos > 2) { |
1126 | if (2 + pos[1] > end - pos) | |
3b4f6dac JM |
1127 | break; |
1128 | switch (*pos) { | |
1129 | case WLAN_EID_MOBILITY_DOMAIN: | |
1130 | mdie = pos; | |
1131 | break; | |
1132 | case WLAN_EID_FAST_BSS_TRANSITION: | |
1133 | ftie = pos; | |
1134 | break; | |
1135 | } | |
1136 | pos += 2 + pos[1]; | |
1137 | } | |
1138 | } | |
1139 | ||
1140 | if (ft_validate_mdie(sm, src_addr, ie, mdie) < 0 || | |
1141 | ft_validate_ftie(sm, src_addr, ie, ftie) < 0 || | |
5af8187e JM |
1142 | ft_validate_rsnie(sm, src_addr, ie) < 0) |
1143 | return -1; | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | #endif /* CONFIG_IEEE80211R */ | |
1149 | ||
1150 | ||
6fc6879b JM |
1151 | static int wpa_supplicant_validate_ie(struct wpa_sm *sm, |
1152 | const unsigned char *src_addr, | |
1153 | struct wpa_eapol_ie_parse *ie) | |
1154 | { | |
1155 | if (sm->ap_wpa_ie == NULL && sm->ap_rsn_ie == NULL) { | |
f049052b BG |
1156 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1157 | "WPA: No WPA/RSN IE for this AP known. " | |
1158 | "Trying to get from scan results"); | |
6fc6879b | 1159 | if (wpa_sm_get_beacon_ie(sm) < 0) { |
f049052b BG |
1160 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1161 | "WPA: Could not find AP from " | |
1162 | "the scan results"); | |
6fc6879b | 1163 | } else { |
f049052b BG |
1164 | wpa_msg(sm->ctx->msg_ctx, MSG_DEBUG, |
1165 | "WPA: Found the current AP from " | |
1166 | "updated scan results"); | |
6fc6879b JM |
1167 | } |
1168 | } | |
1169 | ||
1170 | if (ie->wpa_ie == NULL && ie->rsn_ie == NULL && | |
1171 | (sm->ap_wpa_ie || sm->ap_rsn_ie)) { | |
1172 | wpa_report_ie_mismatch(sm, "IE in 3/4 msg does not match " | |
1173 | "with IE in Beacon/ProbeResp (no IE?)", | |
1174 | src_addr, ie->wpa_ie, ie->wpa_ie_len, | |
1175 | ie->rsn_ie, ie->rsn_ie_len); | |
1176 | return -1; | |
1177 | } | |
1178 | ||
1179 | if ((ie->wpa_ie && sm->ap_wpa_ie && | |
1180 | (ie->wpa_ie_len != sm->ap_wpa_ie_len || | |
1181 | os_memcmp(ie->wpa_ie, sm->ap_wpa_ie, ie->wpa_ie_len) != 0)) || | |
1182 | (ie->rsn_ie && sm->ap_rsn_ie && | |
26e23750 JM |
1183 | wpa_compare_rsn_ie(wpa_key_mgmt_ft(sm->key_mgmt), |
1184 | sm->ap_rsn_ie, sm->ap_rsn_ie_len, | |
1185 | ie->rsn_ie, ie->rsn_ie_len))) { | |
6fc6879b JM |
1186 | wpa_report_ie_mismatch(sm, "IE in 3/4 msg does not match " |
1187 | "with IE in Beacon/ProbeResp", | |
1188 | src_addr, ie->wpa_ie, ie->wpa_ie_len, | |
1189 | ie->rsn_ie, ie->rsn_ie_len); | |
1190 | return -1; | |
1191 | } | |
1192 | ||
1193 | if (sm->proto == WPA_PROTO_WPA && | |
1194 | ie->rsn_ie && sm->ap_rsn_ie == NULL && sm->rsn_enabled) { | |
1195 | wpa_report_ie_mismatch(sm, "Possible downgrade attack " | |
1196 | "detected - RSN was enabled and RSN IE " | |
1197 | "was in msg 3/4, but not in " | |
1198 | "Beacon/ProbeResp", | |
1199 | src_addr, ie->wpa_ie, ie->wpa_ie_len, | |
1200 | ie->rsn_ie, ie->rsn_ie_len); | |
1201 | return -1; | |
1202 | } | |
1203 | ||
1204 | #ifdef CONFIG_IEEE80211R | |
5af8187e JM |
1205 | if (wpa_key_mgmt_ft(sm->key_mgmt) && |
1206 | wpa_supplicant_validate_ie_ft(sm, src_addr, ie) < 0) | |
1207 | return -1; | |
6fc6879b JM |
1208 | #endif /* CONFIG_IEEE80211R */ |
1209 | ||
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | ||
1214 | /** | |
1215 | * wpa_supplicant_send_4_of_4 - Send message 4 of WPA/RSN 4-Way Handshake | |
1216 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
1217 | * @dst: Destination address for the frame | |
1218 | * @key: Pointer to the EAPOL-Key frame header | |
1219 | * @ver: Version bits from EAPOL-Key Key Info | |
1220 | * @key_info: Key Info | |
6fc6879b | 1221 | * @ptk: PTK to use for keyed hash and encryption |
c93b7e18 | 1222 | * Returns: >= 0 on success, < 0 on failure |
6fc6879b JM |
1223 | */ |
1224 | int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, | |
1225 | const struct wpa_eapol_key *key, | |
1226 | u16 ver, u16 key_info, | |
6fc6879b JM |
1227 | struct wpa_ptk *ptk) |
1228 | { | |
5e3b5197 | 1229 | size_t mic_len, hdrlen, rlen; |
6fc6879b | 1230 | struct wpa_eapol_key *reply; |
5e3b5197 | 1231 | u8 *rbuf, *key_mic; |
6fc6879b | 1232 | |
5e3b5197 | 1233 | mic_len = wpa_mic_len(sm->key_mgmt); |
6d014ffc | 1234 | hdrlen = sizeof(*reply) + mic_len + 2; |
6fc6879b | 1235 | rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL, |
5e3b5197 | 1236 | hdrlen, &rlen, (void *) &reply); |
6fc6879b JM |
1237 | if (rbuf == NULL) |
1238 | return -1; | |
1239 | ||
a14896e8 JM |
1240 | reply->type = (sm->proto == WPA_PROTO_RSN || |
1241 | sm->proto == WPA_PROTO_OSEN) ? | |
6fc6879b JM |
1242 | EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA; |
1243 | key_info &= WPA_KEY_INFO_SECURE; | |
4a26ccda JM |
1244 | key_info |= ver | WPA_KEY_INFO_KEY_TYPE; |
1245 | if (mic_len) | |
1246 | key_info |= WPA_KEY_INFO_MIC; | |
2022f1d0 JM |
1247 | else |
1248 | key_info |= WPA_KEY_INFO_ENCR_KEY_DATA; | |
6fc6879b | 1249 | WPA_PUT_BE16(reply->key_info, key_info); |
a14896e8 | 1250 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) |
6fc6879b JM |
1251 | WPA_PUT_BE16(reply->key_length, 0); |
1252 | else | |
1253 | os_memcpy(reply->key_length, key->key_length, 2); | |
1254 | os_memcpy(reply->replay_counter, key->replay_counter, | |
1255 | WPA_REPLAY_COUNTER_LEN); | |
1256 | ||
6d014ffc JM |
1257 | key_mic = (u8 *) (reply + 1); |
1258 | WPA_PUT_BE16(key_mic + mic_len, 0); | |
6fc6879b | 1259 | |
f049052b | 1260 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 4/4"); |
1049af7e JM |
1261 | return wpa_eapol_key_send(sm, ptk, ver, dst, ETH_P_EAPOL, rbuf, rlen, |
1262 | key_mic); | |
6fc6879b JM |
1263 | } |
1264 | ||
1265 | ||
1266 | static void wpa_supplicant_process_3_of_4(struct wpa_sm *sm, | |
1267 | const struct wpa_eapol_key *key, | |
e6270129 JM |
1268 | u16 ver, const u8 *key_data, |
1269 | size_t key_data_len) | |
6fc6879b | 1270 | { |
e6270129 | 1271 | u16 key_info, keylen; |
6fc6879b JM |
1272 | struct wpa_eapol_ie_parse ie; |
1273 | ||
1274 | wpa_sm_set_state(sm, WPA_4WAY_HANDSHAKE); | |
f049052b BG |
1275 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 3 of 4-Way " |
1276 | "Handshake from " MACSTR " (ver=%d)", MAC2STR(sm->bssid), ver); | |
6fc6879b JM |
1277 | |
1278 | key_info = WPA_GET_BE16(key->key_info); | |
1279 | ||
e6270129 JM |
1280 | wpa_hexdump(MSG_DEBUG, "WPA: IE KeyData", key_data, key_data_len); |
1281 | if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0) | |
d627a939 | 1282 | goto failed; |
6fc6879b | 1283 | if (ie.gtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) { |
f049052b BG |
1284 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1285 | "WPA: GTK IE in unencrypted key data"); | |
83935317 | 1286 | goto failed; |
6fc6879b JM |
1287 | } |
1288 | #ifdef CONFIG_IEEE80211W | |
1289 | if (ie.igtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) { | |
f049052b BG |
1290 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1291 | "WPA: IGTK KDE in unencrypted key data"); | |
83935317 | 1292 | goto failed; |
6fc6879b JM |
1293 | } |
1294 | ||
8dd9f9cd JM |
1295 | if (ie.igtk && |
1296 | wpa_cipher_valid_mgmt_group(sm->mgmt_group_cipher) && | |
1297 | ie.igtk_len != WPA_IGTK_KDE_PREFIX_LEN + | |
1298 | (unsigned int) wpa_cipher_key_len(sm->mgmt_group_cipher)) { | |
f049052b BG |
1299 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1300 | "WPA: Invalid IGTK KDE length %lu", | |
1301 | (unsigned long) ie.igtk_len); | |
83935317 | 1302 | goto failed; |
6fc6879b JM |
1303 | } |
1304 | #endif /* CONFIG_IEEE80211W */ | |
1305 | ||
1306 | if (wpa_supplicant_validate_ie(sm, sm->bssid, &ie) < 0) | |
83935317 | 1307 | goto failed; |
6fc6879b JM |
1308 | |
1309 | if (os_memcmp(sm->anonce, key->key_nonce, WPA_NONCE_LEN) != 0) { | |
f049052b BG |
1310 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1311 | "WPA: ANonce from message 1 of 4-Way Handshake " | |
1312 | "differs from 3 of 4-Way Handshake - drop packet (src=" | |
1313 | MACSTR ")", MAC2STR(sm->bssid)); | |
83935317 | 1314 | goto failed; |
6fc6879b JM |
1315 | } |
1316 | ||
1317 | keylen = WPA_GET_BE16(key->key_length); | |
c3550295 JM |
1318 | if (keylen != wpa_cipher_key_len(sm->pairwise_cipher)) { |
1319 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, | |
1320 | "WPA: Invalid %s key length %d (src=" MACSTR | |
1321 | ")", wpa_cipher_txt(sm->pairwise_cipher), keylen, | |
1322 | MAC2STR(sm->bssid)); | |
1323 | goto failed; | |
6fc6879b JM |
1324 | } |
1325 | ||
25ef8529 JM |
1326 | #ifdef CONFIG_P2P |
1327 | if (ie.ip_addr_alloc) { | |
1328 | os_memcpy(sm->p2p_ip_addr, ie.ip_addr_alloc, 3 * 4); | |
1329 | wpa_hexdump(MSG_DEBUG, "P2P: IP address info", | |
1330 | sm->p2p_ip_addr, sizeof(sm->p2p_ip_addr)); | |
1331 | } | |
1332 | #endif /* CONFIG_P2P */ | |
1333 | ||
6fc6879b | 1334 | if (wpa_supplicant_send_4_of_4(sm, sm->bssid, key, ver, key_info, |
c93b7e18 | 1335 | &sm->ptk) < 0) { |
83935317 JM |
1336 | goto failed; |
1337 | } | |
6fc6879b JM |
1338 | |
1339 | /* SNonce was successfully used in msg 3/4, so mark it to be renewed | |
1340 | * for the next 4-Way Handshake. If msg 3 is received again, the old | |
1341 | * SNonce will still be used to avoid changing PTK. */ | |
1342 | sm->renew_snonce = 1; | |
1343 | ||
1344 | if (key_info & WPA_KEY_INFO_INSTALL) { | |
83935317 JM |
1345 | if (wpa_supplicant_install_ptk(sm, key)) |
1346 | goto failed; | |
6fc6879b JM |
1347 | } |
1348 | ||
1349 | if (key_info & WPA_KEY_INFO_SECURE) { | |
1350 | wpa_sm_mlme_setprotection( | |
1351 | sm, sm->bssid, MLME_SETPROTECTION_PROTECT_TYPE_RX, | |
1352 | MLME_SETPROTECTION_KEY_TYPE_PAIRWISE); | |
1353 | eapol_sm_notify_portValid(sm->eapol, TRUE); | |
1354 | } | |
1355 | wpa_sm_set_state(sm, WPA_GROUP_HANDSHAKE); | |
1356 | ||
dff1e285 JM |
1357 | if (sm->group_cipher == WPA_CIPHER_GTK_NOT_USED) { |
1358 | wpa_supplicant_key_neg_complete(sm, sm->bssid, | |
1359 | key_info & WPA_KEY_INFO_SECURE); | |
1360 | } else if (ie.gtk && | |
6fc6879b JM |
1361 | wpa_supplicant_pairwise_gtk(sm, key, |
1362 | ie.gtk, ie.gtk_len, key_info) < 0) { | |
f049052b BG |
1363 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1364 | "RSN: Failed to configure GTK"); | |
83935317 | 1365 | goto failed; |
6fc6879b JM |
1366 | } |
1367 | ||
83935317 | 1368 | if (ieee80211w_set_keys(sm, &ie) < 0) { |
f049052b BG |
1369 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1370 | "RSN: Failed to configure IGTK"); | |
83935317 JM |
1371 | goto failed; |
1372 | } | |
1373 | ||
392e68e8 SD |
1374 | if (ie.gtk) |
1375 | wpa_sm_set_rekey_offload(sm); | |
b14a210c | 1376 | |
087a1f4e JM |
1377 | if (sm->proto == WPA_PROTO_RSN && wpa_key_mgmt_suite_b(sm->key_mgmt)) { |
1378 | struct rsn_pmksa_cache_entry *sa; | |
1379 | ||
70c93963 | 1380 | sa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len, NULL, |
98cd3d1c | 1381 | sm->ptk.kck, sm->ptk.kck_len, |
087a1f4e | 1382 | sm->bssid, sm->own_addr, |
869af307 | 1383 | sm->network_ctx, sm->key_mgmt, NULL); |
087a1f4e JM |
1384 | if (!sm->cur_pmksa) |
1385 | sm->cur_pmksa = sa; | |
1386 | } | |
1387 | ||
761396e4 | 1388 | sm->msg_3_of_4_ok = 1; |
83935317 JM |
1389 | return; |
1390 | ||
1391 | failed: | |
1392 | wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED); | |
6fc6879b JM |
1393 | } |
1394 | ||
1395 | ||
1396 | static int wpa_supplicant_process_1_of_2_rsn(struct wpa_sm *sm, | |
1397 | const u8 *keydata, | |
1398 | size_t keydatalen, | |
1399 | u16 key_info, | |
1400 | struct wpa_gtk_data *gd) | |
1401 | { | |
1402 | int maxkeylen; | |
1403 | struct wpa_eapol_ie_parse ie; | |
1404 | ||
ecbdc1a1 JM |
1405 | wpa_hexdump_key(MSG_DEBUG, "RSN: msg 1/2 key data", |
1406 | keydata, keydatalen); | |
d627a939 JM |
1407 | if (wpa_supplicant_parse_ies(keydata, keydatalen, &ie) < 0) |
1408 | return -1; | |
6fc6879b | 1409 | if (ie.gtk && !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) { |
f049052b BG |
1410 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1411 | "WPA: GTK IE in unencrypted key data"); | |
6fc6879b JM |
1412 | return -1; |
1413 | } | |
1414 | if (ie.gtk == NULL) { | |
f049052b BG |
1415 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1416 | "WPA: No GTK IE in Group Key msg 1/2"); | |
6fc6879b JM |
1417 | return -1; |
1418 | } | |
1419 | maxkeylen = gd->gtk_len = ie.gtk_len - 2; | |
1420 | ||
f049052b | 1421 | if (wpa_supplicant_check_group_cipher(sm, sm->group_cipher, |
6fc6879b JM |
1422 | gd->gtk_len, maxkeylen, |
1423 | &gd->key_rsc_len, &gd->alg)) | |
1424 | return -1; | |
1425 | ||
7cb9bb4d JM |
1426 | wpa_hexdump_key(MSG_DEBUG, "RSN: received GTK in group key handshake", |
1427 | ie.gtk, ie.gtk_len); | |
6fc6879b JM |
1428 | gd->keyidx = ie.gtk[0] & 0x3; |
1429 | gd->tx = wpa_supplicant_gtk_tx_bit_workaround(sm, | |
1430 | !!(ie.gtk[0] & BIT(2))); | |
1431 | if (ie.gtk_len - 2 > sizeof(gd->gtk)) { | |
f049052b BG |
1432 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1433 | "RSN: Too long GTK in GTK IE (len=%lu)", | |
1434 | (unsigned long) ie.gtk_len - 2); | |
6fc6879b JM |
1435 | return -1; |
1436 | } | |
1437 | os_memcpy(gd->gtk, ie.gtk + 2, ie.gtk_len - 2); | |
1438 | ||
1439 | if (ieee80211w_set_keys(sm, &ie) < 0) | |
f049052b BG |
1440 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1441 | "RSN: Failed to configure IGTK"); | |
6fc6879b JM |
1442 | |
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | ||
1447 | static int wpa_supplicant_process_1_of_2_wpa(struct wpa_sm *sm, | |
1448 | const struct wpa_eapol_key *key, | |
e6270129 JM |
1449 | const u8 *key_data, |
1450 | size_t key_data_len, u16 key_info, | |
1451 | u16 ver, struct wpa_gtk_data *gd) | |
6fc6879b JM |
1452 | { |
1453 | size_t maxkeylen; | |
c397eff8 | 1454 | u16 gtk_len; |
6fc6879b | 1455 | |
c397eff8 | 1456 | gtk_len = WPA_GET_BE16(key->key_length); |
e6270129 | 1457 | maxkeylen = key_data_len; |
6fc6879b JM |
1458 | if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) { |
1459 | if (maxkeylen < 8) { | |
f049052b BG |
1460 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
1461 | "WPA: Too short maxkeylen (%lu)", | |
1462 | (unsigned long) maxkeylen); | |
6fc6879b JM |
1463 | return -1; |
1464 | } | |
1465 | maxkeylen -= 8; | |
1466 | } | |
1467 | ||
c397eff8 JM |
1468 | if (gtk_len > maxkeylen || |
1469 | wpa_supplicant_check_group_cipher(sm, sm->group_cipher, | |
1470 | gtk_len, maxkeylen, | |
6fc6879b JM |
1471 | &gd->key_rsc_len, &gd->alg)) |
1472 | return -1; | |
1473 | ||
c397eff8 | 1474 | gd->gtk_len = gtk_len; |
6fc6879b JM |
1475 | gd->keyidx = (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >> |
1476 | WPA_KEY_INFO_KEY_INDEX_SHIFT; | |
98cd3d1c | 1477 | if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 && sm->ptk.kek_len == 16) { |
7cb53ded JM |
1478 | #ifdef CONFIG_NO_RC4 |
1479 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, | |
1480 | "WPA: RC4 not supported in the build"); | |
1481 | return -1; | |
1482 | #else /* CONFIG_NO_RC4 */ | |
d2c33b91 | 1483 | u8 ek[32]; |
e6270129 | 1484 | if (key_data_len > sizeof(gd->gtk)) { |
f049052b BG |
1485 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1486 | "WPA: RC4 key data too long (%lu)", | |
e6270129 | 1487 | (unsigned long) key_data_len); |
6fc6879b JM |
1488 | return -1; |
1489 | } | |
d2c33b91 | 1490 | os_memcpy(ek, key->key_iv, 16); |
98cd3d1c | 1491 | os_memcpy(ek + 16, sm->ptk.kek, sm->ptk.kek_len); |
e6270129 JM |
1492 | os_memcpy(gd->gtk, key_data, key_data_len); |
1493 | if (rc4_skip(ek, 32, 256, gd->gtk, key_data_len)) { | |
d2c33b91 | 1494 | os_memset(ek, 0, sizeof(ek)); |
f049052b BG |
1495 | wpa_msg(sm->ctx->msg_ctx, MSG_ERROR, |
1496 | "WPA: RC4 failed"); | |
7a215dfc JM |
1497 | return -1; |
1498 | } | |
d2c33b91 | 1499 | os_memset(ek, 0, sizeof(ek)); |
7cb53ded | 1500 | #endif /* CONFIG_NO_RC4 */ |
6fc6879b | 1501 | } else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) { |
e6270129 | 1502 | if (maxkeylen % 8) { |
f049052b BG |
1503 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1504 | "WPA: Unsupported AES-WRAP len %lu", | |
e6270129 | 1505 | (unsigned long) maxkeylen); |
6fc6879b JM |
1506 | return -1; |
1507 | } | |
1508 | if (maxkeylen > sizeof(gd->gtk)) { | |
f049052b BG |
1509 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1510 | "WPA: AES-WRAP key data " | |
1511 | "too long (keydatalen=%lu maxkeylen=%lu)", | |
e6270129 | 1512 | (unsigned long) key_data_len, |
f049052b | 1513 | (unsigned long) maxkeylen); |
6fc6879b JM |
1514 | return -1; |
1515 | } | |
98cd3d1c JM |
1516 | if (aes_unwrap(sm->ptk.kek, sm->ptk.kek_len, maxkeylen / 8, |
1517 | key_data, gd->gtk)) { | |
f049052b BG |
1518 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1519 | "WPA: AES unwrap failed - could not decrypt " | |
1520 | "GTK"); | |
6fc6879b JM |
1521 | return -1; |
1522 | } | |
1523 | } else { | |
f049052b BG |
1524 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1525 | "WPA: Unsupported key_info type %d", ver); | |
6fc6879b JM |
1526 | return -1; |
1527 | } | |
1528 | gd->tx = wpa_supplicant_gtk_tx_bit_workaround( | |
1529 | sm, !!(key_info & WPA_KEY_INFO_TXRX)); | |
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | ||
1534 | static int wpa_supplicant_send_2_of_2(struct wpa_sm *sm, | |
1535 | const struct wpa_eapol_key *key, | |
1536 | int ver, u16 key_info) | |
1537 | { | |
5e3b5197 | 1538 | size_t mic_len, hdrlen, rlen; |
6fc6879b | 1539 | struct wpa_eapol_key *reply; |
5e3b5197 | 1540 | u8 *rbuf, *key_mic; |
6fc6879b | 1541 | |
5e3b5197 | 1542 | mic_len = wpa_mic_len(sm->key_mgmt); |
6d014ffc | 1543 | hdrlen = sizeof(*reply) + mic_len + 2; |
6fc6879b | 1544 | rbuf = wpa_sm_alloc_eapol(sm, IEEE802_1X_TYPE_EAPOL_KEY, NULL, |
5e3b5197 | 1545 | hdrlen, &rlen, (void *) &reply); |
6fc6879b JM |
1546 | if (rbuf == NULL) |
1547 | return -1; | |
1548 | ||
a14896e8 JM |
1549 | reply->type = (sm->proto == WPA_PROTO_RSN || |
1550 | sm->proto == WPA_PROTO_OSEN) ? | |
6fc6879b JM |
1551 | EAPOL_KEY_TYPE_RSN : EAPOL_KEY_TYPE_WPA; |
1552 | key_info &= WPA_KEY_INFO_KEY_INDEX_MASK; | |
4a26ccda JM |
1553 | key_info |= ver | WPA_KEY_INFO_SECURE; |
1554 | if (mic_len) | |
1555 | key_info |= WPA_KEY_INFO_MIC; | |
6fc6879b | 1556 | WPA_PUT_BE16(reply->key_info, key_info); |
a14896e8 | 1557 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) |
6fc6879b JM |
1558 | WPA_PUT_BE16(reply->key_length, 0); |
1559 | else | |
1560 | os_memcpy(reply->key_length, key->key_length, 2); | |
1561 | os_memcpy(reply->replay_counter, key->replay_counter, | |
1562 | WPA_REPLAY_COUNTER_LEN); | |
1563 | ||
6d014ffc JM |
1564 | key_mic = (u8 *) (reply + 1); |
1565 | WPA_PUT_BE16(key_mic + mic_len, 0); | |
6fc6879b | 1566 | |
f049052b | 1567 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Sending EAPOL-Key 2/2"); |
1049af7e JM |
1568 | return wpa_eapol_key_send(sm, &sm->ptk, ver, sm->bssid, ETH_P_EAPOL, |
1569 | rbuf, rlen, key_mic); | |
6fc6879b JM |
1570 | } |
1571 | ||
1572 | ||
1573 | static void wpa_supplicant_process_1_of_2(struct wpa_sm *sm, | |
1574 | const unsigned char *src_addr, | |
1575 | const struct wpa_eapol_key *key, | |
e6270129 JM |
1576 | const u8 *key_data, |
1577 | size_t key_data_len, u16 ver) | |
6fc6879b | 1578 | { |
e6270129 | 1579 | u16 key_info; |
6fc6879b JM |
1580 | int rekey, ret; |
1581 | struct wpa_gtk_data gd; | |
73ed03f3 | 1582 | const u8 *key_rsc; |
6fc6879b | 1583 | |
761396e4 JM |
1584 | if (!sm->msg_3_of_4_ok) { |
1585 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, | |
1586 | "WPA: Group Key Handshake started prior to completion of 4-way handshake"); | |
1587 | goto failed; | |
1588 | } | |
1589 | ||
6fc6879b JM |
1590 | os_memset(&gd, 0, sizeof(gd)); |
1591 | ||
1592 | rekey = wpa_sm_get_state(sm) == WPA_COMPLETED; | |
f049052b BG |
1593 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: RX message 1 of Group Key " |
1594 | "Handshake from " MACSTR " (ver=%d)", MAC2STR(src_addr), ver); | |
6fc6879b JM |
1595 | |
1596 | key_info = WPA_GET_BE16(key->key_info); | |
6fc6879b | 1597 | |
a14896e8 | 1598 | if (sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) { |
e6270129 JM |
1599 | ret = wpa_supplicant_process_1_of_2_rsn(sm, key_data, |
1600 | key_data_len, key_info, | |
6fc6879b JM |
1601 | &gd); |
1602 | } else { | |
e6270129 JM |
1603 | ret = wpa_supplicant_process_1_of_2_wpa(sm, key, key_data, |
1604 | key_data_len, | |
1605 | key_info, ver, &gd); | |
6fc6879b JM |
1606 | } |
1607 | ||
1608 | wpa_sm_set_state(sm, WPA_GROUP_HANDSHAKE); | |
1609 | ||
1610 | if (ret) | |
83935317 | 1611 | goto failed; |
6fc6879b | 1612 | |
73ed03f3 MS |
1613 | key_rsc = key->key_rsc; |
1614 | if (wpa_supplicant_rsc_relaxation(sm, key->key_rsc)) | |
1615 | key_rsc = null_rsc; | |
1616 | ||
1617 | if (wpa_supplicant_install_gtk(sm, &gd, key_rsc) || | |
c93b7e18 | 1618 | wpa_supplicant_send_2_of_2(sm, key, ver, key_info) < 0) |
83935317 | 1619 | goto failed; |
fbfc974c | 1620 | os_memset(&gd, 0, sizeof(gd)); |
6fc6879b JM |
1621 | |
1622 | if (rekey) { | |
0f057fb2 | 1623 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Group rekeying " |
6fc6879b JM |
1624 | "completed with " MACSTR " [GTK=%s]", |
1625 | MAC2STR(sm->bssid), wpa_cipher_txt(sm->group_cipher)); | |
1626 | wpa_sm_cancel_auth_timeout(sm); | |
1627 | wpa_sm_set_state(sm, WPA_COMPLETED); | |
1628 | } else { | |
1629 | wpa_supplicant_key_neg_complete(sm, sm->bssid, | |
1630 | key_info & | |
1631 | WPA_KEY_INFO_SECURE); | |
1632 | } | |
392e68e8 SD |
1633 | |
1634 | wpa_sm_set_rekey_offload(sm); | |
1635 | ||
83935317 JM |
1636 | return; |
1637 | ||
1638 | failed: | |
fbfc974c | 1639 | os_memset(&gd, 0, sizeof(gd)); |
83935317 | 1640 | wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED); |
6fc6879b JM |
1641 | } |
1642 | ||
1643 | ||
1644 | static int wpa_supplicant_verify_eapol_key_mic(struct wpa_sm *sm, | |
6d014ffc | 1645 | struct wpa_eapol_key *key, |
6fc6879b JM |
1646 | u16 ver, |
1647 | const u8 *buf, size_t len) | |
1648 | { | |
98cd3d1c | 1649 | u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN]; |
6fc6879b | 1650 | int ok = 0; |
5e3b5197 | 1651 | size_t mic_len = wpa_mic_len(sm->key_mgmt); |
6fc6879b | 1652 | |
6d014ffc | 1653 | os_memcpy(mic, key + 1, mic_len); |
6fc6879b | 1654 | if (sm->tptk_set) { |
6d014ffc | 1655 | os_memset(key + 1, 0, mic_len); |
98cd3d1c | 1656 | wpa_eapol_key_mic(sm->tptk.kck, sm->tptk.kck_len, sm->key_mgmt, |
6d014ffc JM |
1657 | ver, buf, len, (u8 *) (key + 1)); |
1658 | if (os_memcmp_const(mic, key + 1, mic_len) != 0) { | |
f049052b BG |
1659 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1660 | "WPA: Invalid EAPOL-Key MIC " | |
1661 | "when using TPTK - ignoring TPTK"); | |
6fc6879b JM |
1662 | } else { |
1663 | ok = 1; | |
1664 | sm->tptk_set = 0; | |
1665 | sm->ptk_set = 1; | |
1666 | os_memcpy(&sm->ptk, &sm->tptk, sizeof(sm->ptk)); | |
d2c33b91 | 1667 | os_memset(&sm->tptk, 0, sizeof(sm->tptk)); |
6fc6879b JM |
1668 | } |
1669 | } | |
1670 | ||
1671 | if (!ok && sm->ptk_set) { | |
6d014ffc | 1672 | os_memset(key + 1, 0, mic_len); |
98cd3d1c | 1673 | wpa_eapol_key_mic(sm->ptk.kck, sm->ptk.kck_len, sm->key_mgmt, |
6d014ffc JM |
1674 | ver, buf, len, (u8 *) (key + 1)); |
1675 | if (os_memcmp_const(mic, key + 1, mic_len) != 0) { | |
f049052b BG |
1676 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1677 | "WPA: Invalid EAPOL-Key MIC - " | |
1678 | "dropping packet"); | |
6fc6879b JM |
1679 | return -1; |
1680 | } | |
1681 | ok = 1; | |
1682 | } | |
1683 | ||
1684 | if (!ok) { | |
f049052b BG |
1685 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1686 | "WPA: Could not verify EAPOL-Key MIC - " | |
1687 | "dropping packet"); | |
6fc6879b JM |
1688 | return -1; |
1689 | } | |
1690 | ||
1691 | os_memcpy(sm->rx_replay_counter, key->replay_counter, | |
1692 | WPA_REPLAY_COUNTER_LEN); | |
1693 | sm->rx_replay_counter_set = 1; | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | ||
1698 | /* Decrypt RSN EAPOL-Key key data (RC4 or AES-WRAP) */ | |
1699 | static int wpa_supplicant_decrypt_key_data(struct wpa_sm *sm, | |
6d014ffc JM |
1700 | struct wpa_eapol_key *key, |
1701 | size_t mic_len, u16 ver, | |
e6270129 | 1702 | u8 *key_data, size_t *key_data_len) |
6fc6879b | 1703 | { |
6fc6879b | 1704 | wpa_hexdump(MSG_DEBUG, "RSN: encrypted key data", |
e6270129 | 1705 | key_data, *key_data_len); |
6fc6879b | 1706 | if (!sm->ptk_set) { |
f049052b BG |
1707 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1708 | "WPA: PTK not available, cannot decrypt EAPOL-Key Key " | |
1709 | "Data"); | |
6fc6879b JM |
1710 | return -1; |
1711 | } | |
1712 | ||
1713 | /* Decrypt key data here so that this operation does not need | |
1714 | * to be implemented separately for each message type. */ | |
98cd3d1c | 1715 | if (ver == WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 && sm->ptk.kek_len == 16) { |
7cb53ded JM |
1716 | #ifdef CONFIG_NO_RC4 |
1717 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, | |
1718 | "WPA: RC4 not supported in the build"); | |
1719 | return -1; | |
1720 | #else /* CONFIG_NO_RC4 */ | |
6fc6879b JM |
1721 | u8 ek[32]; |
1722 | os_memcpy(ek, key->key_iv, 16); | |
98cd3d1c | 1723 | os_memcpy(ek + 16, sm->ptk.kek, sm->ptk.kek_len); |
e6270129 | 1724 | if (rc4_skip(ek, 32, 256, key_data, *key_data_len)) { |
d2c33b91 | 1725 | os_memset(ek, 0, sizeof(ek)); |
f049052b BG |
1726 | wpa_msg(sm->ctx->msg_ctx, MSG_ERROR, |
1727 | "WPA: RC4 failed"); | |
7a215dfc JM |
1728 | return -1; |
1729 | } | |
d2c33b91 | 1730 | os_memset(ek, 0, sizeof(ek)); |
7cb53ded | 1731 | #endif /* CONFIG_NO_RC4 */ |
6fc6879b | 1732 | } else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES || |
df0f01d9 | 1733 | ver == WPA_KEY_INFO_TYPE_AES_128_CMAC || |
929a2ea5 JM |
1734 | sm->key_mgmt == WPA_KEY_MGMT_OSEN || |
1735 | wpa_key_mgmt_suite_b(sm->key_mgmt)) { | |
6fc6879b | 1736 | u8 *buf; |
e6270129 | 1737 | if (*key_data_len < 8 || *key_data_len % 8) { |
f049052b | 1738 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
e6270129 JM |
1739 | "WPA: Unsupported AES-WRAP len %u", |
1740 | (unsigned int) *key_data_len); | |
6fc6879b JM |
1741 | return -1; |
1742 | } | |
e6270129 JM |
1743 | *key_data_len -= 8; /* AES-WRAP adds 8 bytes */ |
1744 | buf = os_malloc(*key_data_len); | |
6fc6879b | 1745 | if (buf == NULL) { |
f049052b BG |
1746 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1747 | "WPA: No memory for AES-UNWRAP buffer"); | |
6fc6879b JM |
1748 | return -1; |
1749 | } | |
98cd3d1c | 1750 | if (aes_unwrap(sm->ptk.kek, sm->ptk.kek_len, *key_data_len / 8, |
e6270129 | 1751 | key_data, buf)) { |
cd5895e8 | 1752 | bin_clear_free(buf, *key_data_len); |
f049052b BG |
1753 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1754 | "WPA: AES unwrap failed - " | |
1755 | "could not decrypt EAPOL-Key key data"); | |
6fc6879b JM |
1756 | return -1; |
1757 | } | |
e6270129 | 1758 | os_memcpy(key_data, buf, *key_data_len); |
cd5895e8 | 1759 | bin_clear_free(buf, *key_data_len); |
6d014ffc | 1760 | WPA_PUT_BE16(((u8 *) (key + 1)) + mic_len, *key_data_len); |
6fc6879b | 1761 | } else { |
f049052b BG |
1762 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
1763 | "WPA: Unsupported key_info type %d", ver); | |
6fc6879b JM |
1764 | return -1; |
1765 | } | |
1766 | wpa_hexdump_key(MSG_DEBUG, "WPA: decrypted EAPOL-Key key data", | |
e6270129 | 1767 | key_data, *key_data_len); |
6fc6879b JM |
1768 | return 0; |
1769 | } | |
1770 | ||
1771 | ||
1772 | /** | |
1773 | * wpa_sm_aborted_cached - Notify WPA that PMKSA caching was aborted | |
1774 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
1775 | */ | |
1776 | void wpa_sm_aborted_cached(struct wpa_sm *sm) | |
1777 | { | |
1778 | if (sm && sm->cur_pmksa) { | |
f049052b BG |
1779 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1780 | "RSN: Cancelling PMKSA caching attempt"); | |
6fc6879b JM |
1781 | sm->cur_pmksa = NULL; |
1782 | } | |
1783 | } | |
1784 | ||
1785 | ||
f049052b | 1786 | static void wpa_eapol_key_dump(struct wpa_sm *sm, |
5e3b5197 JM |
1787 | const struct wpa_eapol_key *key, |
1788 | unsigned int key_data_len, | |
1789 | const u8 *mic, unsigned int mic_len) | |
6fc6879b JM |
1790 | { |
1791 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
1792 | u16 key_info = WPA_GET_BE16(key->key_info); | |
1793 | ||
f049052b BG |
1794 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, " EAPOL-Key type=%d", key->type); |
1795 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
1796 | " key_info 0x%x (ver=%d keyidx=%d rsvd=%d %s%s%s%s%s%s%s%s)", | |
1797 | key_info, key_info & WPA_KEY_INFO_TYPE_MASK, | |
1798 | (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >> | |
1799 | WPA_KEY_INFO_KEY_INDEX_SHIFT, | |
1800 | (key_info & (BIT(13) | BIT(14) | BIT(15))) >> 13, | |
1801 | key_info & WPA_KEY_INFO_KEY_TYPE ? "Pairwise" : "Group", | |
1802 | key_info & WPA_KEY_INFO_INSTALL ? " Install" : "", | |
1803 | key_info & WPA_KEY_INFO_ACK ? " Ack" : "", | |
1804 | key_info & WPA_KEY_INFO_MIC ? " MIC" : "", | |
1805 | key_info & WPA_KEY_INFO_SECURE ? " Secure" : "", | |
1806 | key_info & WPA_KEY_INFO_ERROR ? " Error" : "", | |
1807 | key_info & WPA_KEY_INFO_REQUEST ? " Request" : "", | |
1808 | key_info & WPA_KEY_INFO_ENCR_KEY_DATA ? " Encr" : ""); | |
1809 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
1810 | " key_length=%u key_data_length=%u", | |
5e3b5197 | 1811 | WPA_GET_BE16(key->key_length), key_data_len); |
6fc6879b JM |
1812 | wpa_hexdump(MSG_DEBUG, " replay_counter", |
1813 | key->replay_counter, WPA_REPLAY_COUNTER_LEN); | |
1814 | wpa_hexdump(MSG_DEBUG, " key_nonce", key->key_nonce, WPA_NONCE_LEN); | |
1815 | wpa_hexdump(MSG_DEBUG, " key_iv", key->key_iv, 16); | |
1816 | wpa_hexdump(MSG_DEBUG, " key_rsc", key->key_rsc, 8); | |
1817 | wpa_hexdump(MSG_DEBUG, " key_id (reserved)", key->key_id, 8); | |
5e3b5197 | 1818 | wpa_hexdump(MSG_DEBUG, " key_mic", mic, mic_len); |
6fc6879b JM |
1819 | #endif /* CONFIG_NO_STDOUT_DEBUG */ |
1820 | } | |
1821 | ||
1822 | ||
0ab1dd01 JM |
1823 | #ifdef CONFIG_FILS |
1824 | static int wpa_supp_aead_decrypt(struct wpa_sm *sm, u8 *buf, size_t buf_len, | |
1825 | size_t *key_data_len) | |
1826 | { | |
1827 | struct wpa_ptk *ptk; | |
1828 | struct ieee802_1x_hdr *hdr; | |
1829 | struct wpa_eapol_key *key; | |
1830 | u8 *pos, *tmp; | |
1831 | const u8 *aad[1]; | |
1832 | size_t aad_len[1]; | |
1833 | ||
1834 | if (*key_data_len < AES_BLOCK_SIZE) { | |
1835 | wpa_printf(MSG_INFO, "No room for AES-SIV data in the frame"); | |
1836 | return -1; | |
1837 | } | |
1838 | ||
1839 | if (sm->tptk_set) | |
1840 | ptk = &sm->tptk; | |
1841 | else if (sm->ptk_set) | |
1842 | ptk = &sm->ptk; | |
1843 | else | |
1844 | return -1; | |
1845 | ||
1846 | hdr = (struct ieee802_1x_hdr *) buf; | |
1847 | key = (struct wpa_eapol_key *) (hdr + 1); | |
1848 | pos = (u8 *) (key + 1); | |
1849 | pos += 2; /* Pointing at the Encrypted Key Data field */ | |
1850 | ||
1851 | tmp = os_malloc(*key_data_len); | |
1852 | if (!tmp) | |
1853 | return -1; | |
1854 | ||
1855 | /* AES-SIV AAD from EAPOL protocol version field (inclusive) to | |
1856 | * to Key Data (exclusive). */ | |
1857 | aad[0] = buf; | |
1858 | aad_len[0] = pos - buf; | |
1859 | if (aes_siv_decrypt(ptk->kek, ptk->kek_len, pos, *key_data_len, | |
1860 | 1, aad, aad_len, tmp) < 0) { | |
1861 | wpa_printf(MSG_INFO, "Invalid AES-SIV data in the frame"); | |
1862 | bin_clear_free(tmp, *key_data_len); | |
1863 | return -1; | |
1864 | } | |
1865 | ||
1866 | /* AEAD decryption and validation completed successfully */ | |
1867 | (*key_data_len) -= AES_BLOCK_SIZE; | |
1868 | wpa_hexdump_key(MSG_DEBUG, "WPA: Decrypted Key Data", | |
1869 | tmp, *key_data_len); | |
1870 | ||
1871 | /* Replace Key Data field with the decrypted version */ | |
1872 | os_memcpy(pos, tmp, *key_data_len); | |
1873 | pos -= 2; /* Key Data Length field */ | |
1874 | WPA_PUT_BE16(pos, *key_data_len); | |
1875 | bin_clear_free(tmp, *key_data_len); | |
1876 | ||
1877 | if (sm->tptk_set) { | |
1878 | sm->tptk_set = 0; | |
1879 | sm->ptk_set = 1; | |
1880 | os_memcpy(&sm->ptk, &sm->tptk, sizeof(sm->ptk)); | |
1881 | os_memset(&sm->tptk, 0, sizeof(sm->tptk)); | |
1882 | } | |
1883 | ||
1884 | os_memcpy(sm->rx_replay_counter, key->replay_counter, | |
1885 | WPA_REPLAY_COUNTER_LEN); | |
1886 | sm->rx_replay_counter_set = 1; | |
1887 | ||
1888 | return 0; | |
1889 | } | |
1890 | #endif /* CONFIG_FILS */ | |
1891 | ||
1892 | ||
6fc6879b JM |
1893 | /** |
1894 | * wpa_sm_rx_eapol - Process received WPA EAPOL frames | |
1895 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
1896 | * @src_addr: Source MAC address of the EAPOL packet | |
1897 | * @buf: Pointer to the beginning of the EAPOL data (EAPOL header) | |
1898 | * @len: Length of the EAPOL frame | |
1899 | * Returns: 1 = WPA EAPOL-Key processed, 0 = not a WPA EAPOL-Key, -1 failure | |
1900 | * | |
1901 | * This function is called for each received EAPOL frame. Other than EAPOL-Key | |
1902 | * frames can be skipped if filtering is done elsewhere. wpa_sm_rx_eapol() is | |
1903 | * only processing WPA and WPA2 EAPOL-Key frames. | |
1904 | * | |
1905 | * The received EAPOL-Key packets are validated and valid packets are replied | |
1906 | * to. In addition, key material (PTK, GTK) is configured at the end of a | |
1907 | * successful key handshake. | |
1908 | */ | |
1909 | int wpa_sm_rx_eapol(struct wpa_sm *sm, const u8 *src_addr, | |
1910 | const u8 *buf, size_t len) | |
1911 | { | |
e6270129 | 1912 | size_t plen, data_len, key_data_len; |
d56d7e56 | 1913 | const struct ieee802_1x_hdr *hdr; |
6fc6879b JM |
1914 | struct wpa_eapol_key *key; |
1915 | u16 key_info, ver; | |
d56d7e56 | 1916 | u8 *tmp = NULL; |
6fc6879b JM |
1917 | int ret = -1; |
1918 | struct wpa_peerkey *peerkey = NULL; | |
6d014ffc | 1919 | u8 *mic, *key_data; |
5e3b5197 | 1920 | size_t mic_len, keyhdrlen; |
6fc6879b JM |
1921 | |
1922 | #ifdef CONFIG_IEEE80211R | |
1923 | sm->ft_completed = 0; | |
1924 | #endif /* CONFIG_IEEE80211R */ | |
1925 | ||
5e3b5197 | 1926 | mic_len = wpa_mic_len(sm->key_mgmt); |
6d014ffc | 1927 | keyhdrlen = sizeof(*key) + mic_len + 2; |
5e3b5197 JM |
1928 | |
1929 | if (len < sizeof(*hdr) + keyhdrlen) { | |
f049052b BG |
1930 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1931 | "WPA: EAPOL frame too short to be a WPA " | |
1932 | "EAPOL-Key (len %lu, expecting at least %lu)", | |
1933 | (unsigned long) len, | |
5e3b5197 | 1934 | (unsigned long) sizeof(*hdr) + keyhdrlen); |
6fc6879b JM |
1935 | return 0; |
1936 | } | |
1937 | ||
d56d7e56 | 1938 | hdr = (const struct ieee802_1x_hdr *) buf; |
6fc6879b JM |
1939 | plen = be_to_host16(hdr->length); |
1940 | data_len = plen + sizeof(*hdr); | |
f049052b BG |
1941 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1942 | "IEEE 802.1X RX: version=%d type=%d length=%lu", | |
1943 | hdr->version, hdr->type, (unsigned long) plen); | |
6fc6879b JM |
1944 | |
1945 | if (hdr->version < EAPOL_VERSION) { | |
1946 | /* TODO: backwards compatibility */ | |
1947 | } | |
1948 | if (hdr->type != IEEE802_1X_TYPE_EAPOL_KEY) { | |
f049052b BG |
1949 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1950 | "WPA: EAPOL frame (type %u) discarded, " | |
6fc6879b JM |
1951 | "not a Key frame", hdr->type); |
1952 | ret = 0; | |
1953 | goto out; | |
1954 | } | |
d56d7e56 | 1955 | wpa_hexdump(MSG_MSGDUMP, "WPA: RX EAPOL-Key", buf, len); |
5e3b5197 | 1956 | if (plen > len - sizeof(*hdr) || plen < keyhdrlen) { |
f049052b BG |
1957 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1958 | "WPA: EAPOL frame payload size %lu " | |
1959 | "invalid (frame size %lu)", | |
1960 | (unsigned long) plen, (unsigned long) len); | |
6fc6879b JM |
1961 | ret = 0; |
1962 | goto out; | |
1963 | } | |
d56d7e56 JM |
1964 | if (data_len < len) { |
1965 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
1966 | "WPA: ignoring %lu bytes after the IEEE 802.1X data", | |
1967 | (unsigned long) len - data_len); | |
1968 | } | |
1969 | ||
1970 | /* | |
1971 | * Make a copy of the frame since we need to modify the buffer during | |
1972 | * MAC validation and Key Data decryption. | |
1973 | */ | |
a1f11e34 | 1974 | tmp = os_memdup(buf, data_len); |
d56d7e56 JM |
1975 | if (tmp == NULL) |
1976 | goto out; | |
d56d7e56 | 1977 | key = (struct wpa_eapol_key *) (tmp + sizeof(struct ieee802_1x_hdr)); |
6d014ffc JM |
1978 | mic = (u8 *) (key + 1); |
1979 | key_data = mic + mic_len + 2; | |
6fc6879b JM |
1980 | |
1981 | if (key->type != EAPOL_KEY_TYPE_WPA && key->type != EAPOL_KEY_TYPE_RSN) | |
1982 | { | |
f049052b BG |
1983 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
1984 | "WPA: EAPOL-Key type (%d) unknown, discarded", | |
1985 | key->type); | |
6fc6879b JM |
1986 | ret = 0; |
1987 | goto out; | |
1988 | } | |
6fc6879b | 1989 | |
6d014ffc JM |
1990 | key_data_len = WPA_GET_BE16(mic + mic_len); |
1991 | wpa_eapol_key_dump(sm, key, key_data_len, mic, mic_len); | |
5e3b5197 JM |
1992 | |
1993 | if (key_data_len > plen - keyhdrlen) { | |
d56d7e56 JM |
1994 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, "WPA: Invalid EAPOL-Key " |
1995 | "frame - key_data overflow (%u > %u)", | |
e6270129 | 1996 | (unsigned int) key_data_len, |
5e3b5197 | 1997 | (unsigned int) (plen - keyhdrlen)); |
d56d7e56 | 1998 | goto out; |
6fc6879b | 1999 | } |
d56d7e56 JM |
2000 | |
2001 | eapol_sm_notify_lower_layer_success(sm->eapol, 0); | |
6fc6879b JM |
2002 | key_info = WPA_GET_BE16(key->key_info); |
2003 | ver = key_info & WPA_KEY_INFO_TYPE_MASK; | |
2004 | if (ver != WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 && | |
a20088e5 | 2005 | #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W) |
6fc6879b | 2006 | ver != WPA_KEY_INFO_TYPE_AES_128_CMAC && |
a20088e5 | 2007 | #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */ |
df0f01d9 | 2008 | ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES && |
929a2ea5 | 2009 | !wpa_key_mgmt_suite_b(sm->key_mgmt) && |
352caf00 | 2010 | !wpa_key_mgmt_fils(sm->key_mgmt) && |
df0f01d9 | 2011 | sm->key_mgmt != WPA_KEY_MGMT_OSEN) { |
f049052b BG |
2012 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2013 | "WPA: Unsupported EAPOL-Key descriptor version %d", | |
2014 | ver); | |
6fc6879b JM |
2015 | goto out; |
2016 | } | |
2017 | ||
df0f01d9 JM |
2018 | if (sm->key_mgmt == WPA_KEY_MGMT_OSEN && |
2019 | ver != WPA_KEY_INFO_TYPE_AKM_DEFINED) { | |
2020 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, | |
2021 | "OSEN: Unsupported EAPOL-Key descriptor version %d", | |
2022 | ver); | |
2023 | goto out; | |
2024 | } | |
2025 | ||
352caf00 JM |
2026 | if ((wpa_key_mgmt_suite_b(sm->key_mgmt) || |
2027 | wpa_key_mgmt_fils(sm->key_mgmt)) && | |
929a2ea5 JM |
2028 | ver != WPA_KEY_INFO_TYPE_AKM_DEFINED) { |
2029 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, | |
2030 | "RSN: Unsupported EAPOL-Key descriptor version %d (expected AKM defined = 0)", | |
2031 | ver); | |
2032 | goto out; | |
2033 | } | |
2034 | ||
6fc6879b | 2035 | #ifdef CONFIG_IEEE80211R |
56586197 | 2036 | if (wpa_key_mgmt_ft(sm->key_mgmt)) { |
6fc6879b JM |
2037 | /* IEEE 802.11r uses a new key_info type (AES-128-CMAC). */ |
2038 | if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) { | |
f049052b BG |
2039 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2040 | "FT: AP did not use AES-128-CMAC"); | |
6fc6879b JM |
2041 | goto out; |
2042 | } | |
2043 | } else | |
2044 | #endif /* CONFIG_IEEE80211R */ | |
56586197 JM |
2045 | #ifdef CONFIG_IEEE80211W |
2046 | if (wpa_key_mgmt_sha256(sm->key_mgmt)) { | |
df0f01d9 | 2047 | if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC && |
929a2ea5 | 2048 | sm->key_mgmt != WPA_KEY_MGMT_OSEN && |
352caf00 | 2049 | !wpa_key_mgmt_fils(sm->key_mgmt) && |
929a2ea5 | 2050 | !wpa_key_mgmt_suite_b(sm->key_mgmt)) { |
f049052b BG |
2051 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2052 | "WPA: AP did not use the " | |
2053 | "negotiated AES-128-CMAC"); | |
56586197 JM |
2054 | goto out; |
2055 | } | |
2056 | } else | |
2057 | #endif /* CONFIG_IEEE80211W */ | |
6fc6879b | 2058 | if (sm->pairwise_cipher == WPA_CIPHER_CCMP && |
929a2ea5 | 2059 | !wpa_key_mgmt_suite_b(sm->key_mgmt) && |
352caf00 | 2060 | !wpa_key_mgmt_fils(sm->key_mgmt) && |
6fc6879b | 2061 | ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) { |
f049052b BG |
2062 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2063 | "WPA: CCMP is used, but EAPOL-Key " | |
2064 | "descriptor version (%d) is not 2", ver); | |
6fc6879b JM |
2065 | if (sm->group_cipher != WPA_CIPHER_CCMP && |
2066 | !(key_info & WPA_KEY_INFO_KEY_TYPE)) { | |
2067 | /* Earlier versions of IEEE 802.11i did not explicitly | |
2068 | * require version 2 descriptor for all EAPOL-Key | |
2069 | * packets, so allow group keys to use version 1 if | |
2070 | * CCMP is not used for them. */ | |
f049052b BG |
2071 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2072 | "WPA: Backwards compatibility: allow invalid " | |
2073 | "version for non-CCMP group keys"); | |
9f6a7cdd JM |
2074 | } else if (ver == WPA_KEY_INFO_TYPE_AES_128_CMAC) { |
2075 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, | |
2076 | "WPA: Interoperability workaround: allow incorrect (should have been HMAC-SHA1), but stronger (is AES-128-CMAC), descriptor version to be used"); | |
6fc6879b JM |
2077 | } else |
2078 | goto out; | |
801e1173 | 2079 | } else if (sm->pairwise_cipher == WPA_CIPHER_GCMP && |
929a2ea5 | 2080 | !wpa_key_mgmt_suite_b(sm->key_mgmt) && |
801e1173 | 2081 | ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) { |
eb7719ff JM |
2082 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2083 | "WPA: GCMP is used, but EAPOL-Key " | |
2084 | "descriptor version (%d) is not 2", ver); | |
2085 | goto out; | |
2086 | } | |
6fc6879b JM |
2087 | |
2088 | #ifdef CONFIG_PEERKEY | |
2089 | for (peerkey = sm->peerkey; peerkey; peerkey = peerkey->next) { | |
2090 | if (os_memcmp(peerkey->addr, src_addr, ETH_ALEN) == 0) | |
2091 | break; | |
2092 | } | |
2093 | ||
2094 | if (!(key_info & WPA_KEY_INFO_SMK_MESSAGE) && peerkey) { | |
2095 | if (!peerkey->initiator && peerkey->replay_counter_set && | |
2096 | os_memcmp(key->replay_counter, peerkey->replay_counter, | |
2097 | WPA_REPLAY_COUNTER_LEN) <= 0) { | |
f049052b BG |
2098 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
2099 | "RSN: EAPOL-Key Replay Counter did not " | |
2100 | "increase (STK) - dropping packet"); | |
6fc6879b JM |
2101 | goto out; |
2102 | } else if (peerkey->initiator) { | |
2103 | u8 _tmp[WPA_REPLAY_COUNTER_LEN]; | |
2104 | os_memcpy(_tmp, key->replay_counter, | |
2105 | WPA_REPLAY_COUNTER_LEN); | |
2106 | inc_byte_array(_tmp, WPA_REPLAY_COUNTER_LEN); | |
2107 | if (os_memcmp(_tmp, peerkey->replay_counter, | |
2108 | WPA_REPLAY_COUNTER_LEN) != 0) { | |
f049052b BG |
2109 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
2110 | "RSN: EAPOL-Key Replay " | |
2111 | "Counter did not match (STK) - " | |
2112 | "dropping packet"); | |
6fc6879b JM |
2113 | goto out; |
2114 | } | |
2115 | } | |
2116 | } | |
2117 | ||
2118 | if (peerkey && peerkey->initiator && (key_info & WPA_KEY_INFO_ACK)) { | |
f049052b BG |
2119 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2120 | "RSN: Ack bit in key_info from STK peer"); | |
6fc6879b JM |
2121 | goto out; |
2122 | } | |
2123 | #endif /* CONFIG_PEERKEY */ | |
2124 | ||
2125 | if (!peerkey && sm->rx_replay_counter_set && | |
2126 | os_memcmp(key->replay_counter, sm->rx_replay_counter, | |
2127 | WPA_REPLAY_COUNTER_LEN) <= 0) { | |
f049052b BG |
2128 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
2129 | "WPA: EAPOL-Key Replay Counter did not increase - " | |
2130 | "dropping packet"); | |
6fc6879b JM |
2131 | goto out; |
2132 | } | |
2133 | ||
2134 | if (!(key_info & (WPA_KEY_INFO_ACK | WPA_KEY_INFO_SMK_MESSAGE)) | |
2135 | #ifdef CONFIG_PEERKEY | |
2136 | && (peerkey == NULL || !peerkey->initiator) | |
2137 | #endif /* CONFIG_PEERKEY */ | |
2138 | ) { | |
f049052b BG |
2139 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2140 | "WPA: No Ack bit in key_info"); | |
6fc6879b JM |
2141 | goto out; |
2142 | } | |
2143 | ||
2144 | if (key_info & WPA_KEY_INFO_REQUEST) { | |
f049052b BG |
2145 | wpa_msg(sm->ctx->msg_ctx, MSG_INFO, |
2146 | "WPA: EAPOL-Key with Request bit - dropped"); | |
6fc6879b JM |
2147 | goto out; |
2148 | } | |
2149 | ||
2150 | if ((key_info & WPA_KEY_INFO_MIC) && !peerkey && | |
6d014ffc | 2151 | wpa_supplicant_verify_eapol_key_mic(sm, key, ver, tmp, data_len)) |
6fc6879b JM |
2152 | goto out; |
2153 | ||
2154 | #ifdef CONFIG_PEERKEY | |
2155 | if ((key_info & WPA_KEY_INFO_MIC) && peerkey && | |
6d014ffc | 2156 | peerkey_verify_eapol_key_mic(sm, peerkey, key, ver, tmp, |
5e3b5197 | 2157 | data_len)) |
6fc6879b JM |
2158 | goto out; |
2159 | #endif /* CONFIG_PEERKEY */ | |
2160 | ||
0ab1dd01 JM |
2161 | #ifdef CONFIG_FILS |
2162 | if (!mic_len && (key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) { | |
2163 | if (wpa_supp_aead_decrypt(sm, tmp, data_len, &key_data_len)) | |
2164 | goto out; | |
2165 | } | |
2166 | #endif /* CONFIG_FILS */ | |
2167 | ||
a14896e8 | 2168 | if ((sm->proto == WPA_PROTO_RSN || sm->proto == WPA_PROTO_OSEN) && |
0ab1dd01 | 2169 | (key_info & WPA_KEY_INFO_ENCR_KEY_DATA) && mic_len) { |
6d014ffc JM |
2170 | if (wpa_supplicant_decrypt_key_data(sm, key, mic_len, |
2171 | ver, key_data, | |
e6270129 | 2172 | &key_data_len)) |
d56d7e56 | 2173 | goto out; |
6fc6879b JM |
2174 | } |
2175 | ||
2176 | if (key_info & WPA_KEY_INFO_KEY_TYPE) { | |
2177 | if (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) { | |
f049052b BG |
2178 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
2179 | "WPA: Ignored EAPOL-Key (Pairwise) with " | |
2180 | "non-zero key index"); | |
6fc6879b JM |
2181 | goto out; |
2182 | } | |
2183 | if (peerkey) { | |
2184 | /* PeerKey 4-Way Handshake */ | |
f107d00c JM |
2185 | peerkey_rx_eapol_4way(sm, peerkey, key, key_info, ver, |
2186 | key_data, key_data_len); | |
0ab1dd01 JM |
2187 | } else if (key_info & (WPA_KEY_INFO_MIC | |
2188 | WPA_KEY_INFO_ENCR_KEY_DATA)) { | |
6fc6879b | 2189 | /* 3/4 4-Way Handshake */ |
e6270129 JM |
2190 | wpa_supplicant_process_3_of_4(sm, key, ver, key_data, |
2191 | key_data_len); | |
6fc6879b JM |
2192 | } else { |
2193 | /* 1/4 4-Way Handshake */ | |
2194 | wpa_supplicant_process_1_of_4(sm, src_addr, key, | |
e6270129 JM |
2195 | ver, key_data, |
2196 | key_data_len); | |
6fc6879b JM |
2197 | } |
2198 | } else if (key_info & WPA_KEY_INFO_SMK_MESSAGE) { | |
2199 | /* PeerKey SMK Handshake */ | |
28fb9bb1 JM |
2200 | peerkey_rx_eapol_smk(sm, src_addr, key, key_data, key_data_len, |
2201 | key_info, ver); | |
6fc6879b | 2202 | } else { |
16eb4858 JM |
2203 | if ((mic_len && (key_info & WPA_KEY_INFO_MIC)) || |
2204 | (!mic_len && (key_info & WPA_KEY_INFO_ENCR_KEY_DATA))) { | |
6fc6879b JM |
2205 | /* 1/2 Group Key Handshake */ |
2206 | wpa_supplicant_process_1_of_2(sm, src_addr, key, | |
e6270129 JM |
2207 | key_data, key_data_len, |
2208 | ver); | |
6fc6879b | 2209 | } else { |
f049052b | 2210 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, |
16eb4858 | 2211 | "WPA: EAPOL-Key (Group) without Mic/Encr bit - " |
f049052b | 2212 | "dropped"); |
6fc6879b JM |
2213 | } |
2214 | } | |
2215 | ||
2216 | ret = 1; | |
2217 | ||
2218 | out: | |
fbfc974c | 2219 | bin_clear_free(tmp, data_len); |
6fc6879b JM |
2220 | return ret; |
2221 | } | |
2222 | ||
2223 | ||
2224 | #ifdef CONFIG_CTRL_IFACE | |
6fc6879b JM |
2225 | static u32 wpa_key_mgmt_suite(struct wpa_sm *sm) |
2226 | { | |
2227 | switch (sm->key_mgmt) { | |
2228 | case WPA_KEY_MGMT_IEEE8021X: | |
a14896e8 JM |
2229 | return ((sm->proto == WPA_PROTO_RSN || |
2230 | sm->proto == WPA_PROTO_OSEN) ? | |
6fc6879b JM |
2231 | RSN_AUTH_KEY_MGMT_UNSPEC_802_1X : |
2232 | WPA_AUTH_KEY_MGMT_UNSPEC_802_1X); | |
2233 | case WPA_KEY_MGMT_PSK: | |
2234 | return (sm->proto == WPA_PROTO_RSN ? | |
2235 | RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X : | |
2236 | WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X); | |
2237 | #ifdef CONFIG_IEEE80211R | |
2238 | case WPA_KEY_MGMT_FT_IEEE8021X: | |
2239 | return RSN_AUTH_KEY_MGMT_FT_802_1X; | |
2240 | case WPA_KEY_MGMT_FT_PSK: | |
2241 | return RSN_AUTH_KEY_MGMT_FT_PSK; | |
2242 | #endif /* CONFIG_IEEE80211R */ | |
56586197 JM |
2243 | #ifdef CONFIG_IEEE80211W |
2244 | case WPA_KEY_MGMT_IEEE8021X_SHA256: | |
2245 | return RSN_AUTH_KEY_MGMT_802_1X_SHA256; | |
2246 | case WPA_KEY_MGMT_PSK_SHA256: | |
2247 | return RSN_AUTH_KEY_MGMT_PSK_SHA256; | |
2248 | #endif /* CONFIG_IEEE80211W */ | |
369c8d7b JM |
2249 | case WPA_KEY_MGMT_CCKM: |
2250 | return (sm->proto == WPA_PROTO_RSN ? | |
2251 | RSN_AUTH_KEY_MGMT_CCKM: | |
2252 | WPA_AUTH_KEY_MGMT_CCKM); | |
6fc6879b JM |
2253 | case WPA_KEY_MGMT_WPA_NONE: |
2254 | return WPA_AUTH_KEY_MGMT_NONE; | |
666497c8 JM |
2255 | case WPA_KEY_MGMT_IEEE8021X_SUITE_B: |
2256 | return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B; | |
5e3b5197 JM |
2257 | case WPA_KEY_MGMT_IEEE8021X_SUITE_B_192: |
2258 | return RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192; | |
6fc6879b JM |
2259 | default: |
2260 | return 0; | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | ||
6fc6879b JM |
2265 | #define RSN_SUITE "%02x-%02x-%02x-%d" |
2266 | #define RSN_SUITE_ARG(s) \ | |
2267 | ((s) >> 24) & 0xff, ((s) >> 16) & 0xff, ((s) >> 8) & 0xff, (s) & 0xff | |
2268 | ||
2269 | /** | |
2270 | * wpa_sm_get_mib - Dump text list of MIB entries | |
2271 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2272 | * @buf: Buffer for the list | |
2273 | * @buflen: Length of the buffer | |
2274 | * Returns: Number of bytes written to buffer | |
2275 | * | |
2276 | * This function is used fetch dot11 MIB variables. | |
2277 | */ | |
2278 | int wpa_sm_get_mib(struct wpa_sm *sm, char *buf, size_t buflen) | |
2279 | { | |
2280 | char pmkid_txt[PMKID_LEN * 2 + 1]; | |
2281 | int rsna, ret; | |
2282 | size_t len; | |
2283 | ||
2284 | if (sm->cur_pmksa) { | |
2285 | wpa_snprintf_hex(pmkid_txt, sizeof(pmkid_txt), | |
2286 | sm->cur_pmksa->pmkid, PMKID_LEN); | |
2287 | } else | |
2288 | pmkid_txt[0] = '\0'; | |
2289 | ||
56586197 JM |
2290 | if ((wpa_key_mgmt_wpa_psk(sm->key_mgmt) || |
2291 | wpa_key_mgmt_wpa_ieee8021x(sm->key_mgmt)) && | |
6fc6879b JM |
2292 | sm->proto == WPA_PROTO_RSN) |
2293 | rsna = 1; | |
2294 | else | |
2295 | rsna = 0; | |
2296 | ||
2297 | ret = os_snprintf(buf, buflen, | |
2298 | "dot11RSNAOptionImplemented=TRUE\n" | |
2299 | "dot11RSNAPreauthenticationImplemented=TRUE\n" | |
2300 | "dot11RSNAEnabled=%s\n" | |
2301 | "dot11RSNAPreauthenticationEnabled=%s\n" | |
2302 | "dot11RSNAConfigVersion=%d\n" | |
2303 | "dot11RSNAConfigPairwiseKeysSupported=5\n" | |
2304 | "dot11RSNAConfigGroupCipherSize=%d\n" | |
2305 | "dot11RSNAConfigPMKLifetime=%d\n" | |
2306 | "dot11RSNAConfigPMKReauthThreshold=%d\n" | |
2307 | "dot11RSNAConfigNumberOfPTKSAReplayCounters=1\n" | |
2308 | "dot11RSNAConfigSATimeout=%d\n", | |
2309 | rsna ? "TRUE" : "FALSE", | |
2310 | rsna ? "TRUE" : "FALSE", | |
2311 | RSN_VERSION, | |
c3550295 | 2312 | wpa_cipher_key_len(sm->group_cipher) * 8, |
6fc6879b JM |
2313 | sm->dot11RSNAConfigPMKLifetime, |
2314 | sm->dot11RSNAConfigPMKReauthThreshold, | |
2315 | sm->dot11RSNAConfigSATimeout); | |
d85e1fc8 | 2316 | if (os_snprintf_error(buflen, ret)) |
6fc6879b JM |
2317 | return 0; |
2318 | len = ret; | |
2319 | ||
2320 | ret = os_snprintf( | |
2321 | buf + len, buflen - len, | |
2322 | "dot11RSNAAuthenticationSuiteSelected=" RSN_SUITE "\n" | |
2323 | "dot11RSNAPairwiseCipherSelected=" RSN_SUITE "\n" | |
2324 | "dot11RSNAGroupCipherSelected=" RSN_SUITE "\n" | |
2325 | "dot11RSNAPMKIDUsed=%s\n" | |
2326 | "dot11RSNAAuthenticationSuiteRequested=" RSN_SUITE "\n" | |
2327 | "dot11RSNAPairwiseCipherRequested=" RSN_SUITE "\n" | |
2328 | "dot11RSNAGroupCipherRequested=" RSN_SUITE "\n" | |
2329 | "dot11RSNAConfigNumberOfGTKSAReplayCounters=0\n" | |
2330 | "dot11RSNA4WayHandshakeFailures=%u\n", | |
2331 | RSN_SUITE_ARG(wpa_key_mgmt_suite(sm)), | |
c3550295 JM |
2332 | RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto, |
2333 | sm->pairwise_cipher)), | |
2334 | RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto, | |
2335 | sm->group_cipher)), | |
6fc6879b JM |
2336 | pmkid_txt, |
2337 | RSN_SUITE_ARG(wpa_key_mgmt_suite(sm)), | |
c3550295 JM |
2338 | RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto, |
2339 | sm->pairwise_cipher)), | |
2340 | RSN_SUITE_ARG(wpa_cipher_to_suite(sm->proto, | |
2341 | sm->group_cipher)), | |
6fc6879b | 2342 | sm->dot11RSNA4WayHandshakeFailures); |
1f102d3b | 2343 | if (!os_snprintf_error(buflen - len, ret)) |
6fc6879b JM |
2344 | len += ret; |
2345 | ||
2346 | return (int) len; | |
2347 | } | |
2348 | #endif /* CONFIG_CTRL_IFACE */ | |
2349 | ||
2350 | ||
2351 | static void wpa_sm_pmksa_free_cb(struct rsn_pmksa_cache_entry *entry, | |
6aaac006 | 2352 | void *ctx, enum pmksa_free_reason reason) |
6fc6879b JM |
2353 | { |
2354 | struct wpa_sm *sm = ctx; | |
6aaac006 | 2355 | int deauth = 0; |
6fc6879b | 2356 | |
6aaac006 DW |
2357 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "RSN: PMKSA cache entry free_cb: " |
2358 | MACSTR " reason=%d", MAC2STR(entry->aa), reason); | |
2359 | ||
2360 | if (sm->cur_pmksa == entry) { | |
2361 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, | |
2362 | "RSN: %s current PMKSA entry", | |
2363 | reason == PMKSA_REPLACE ? "replaced" : "removed"); | |
2364 | pmksa_cache_clear_current(sm); | |
2365 | ||
2366 | /* | |
2367 | * If an entry is simply being replaced, there's no need to | |
2368 | * deauthenticate because it will be immediately re-added. | |
2369 | * This happens when EAP authentication is completed again | |
2370 | * (reauth or failed PMKSA caching attempt). | |
2371 | */ | |
2372 | if (reason != PMKSA_REPLACE) | |
2373 | deauth = 1; | |
2374 | } | |
2375 | ||
2376 | if (reason == PMKSA_EXPIRE && | |
6fc6879b JM |
2377 | (sm->pmk_len == entry->pmk_len && |
2378 | os_memcmp(sm->pmk, entry->pmk, sm->pmk_len) == 0)) { | |
f049052b | 2379 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
6aaac006 DW |
2380 | "RSN: deauthenticating due to expired PMK"); |
2381 | pmksa_cache_clear_current(sm); | |
2382 | deauth = 1; | |
2383 | } | |
6fc6879b | 2384 | |
6aaac006 | 2385 | if (deauth) { |
6fc6879b JM |
2386 | os_memset(sm->pmk, 0, sizeof(sm->pmk)); |
2387 | wpa_sm_deauthenticate(sm, WLAN_REASON_UNSPECIFIED); | |
6fc6879b JM |
2388 | } |
2389 | } | |
2390 | ||
2391 | ||
2392 | /** | |
2393 | * wpa_sm_init - Initialize WPA state machine | |
2394 | * @ctx: Context pointer for callbacks; this needs to be an allocated buffer | |
2395 | * Returns: Pointer to the allocated WPA state machine data | |
2396 | * | |
2397 | * This function is used to allocate a new WPA state machine and the returned | |
2398 | * value is passed to all WPA state machine calls. | |
2399 | */ | |
2400 | struct wpa_sm * wpa_sm_init(struct wpa_sm_ctx *ctx) | |
2401 | { | |
2402 | struct wpa_sm *sm; | |
2403 | ||
2404 | sm = os_zalloc(sizeof(*sm)); | |
2405 | if (sm == NULL) | |
2406 | return NULL; | |
c5b26e33 | 2407 | dl_list_init(&sm->pmksa_candidates); |
6fc6879b JM |
2408 | sm->renew_snonce = 1; |
2409 | sm->ctx = ctx; | |
2410 | ||
2411 | sm->dot11RSNAConfigPMKLifetime = 43200; | |
2412 | sm->dot11RSNAConfigPMKReauthThreshold = 70; | |
2413 | sm->dot11RSNAConfigSATimeout = 60; | |
2414 | ||
2415 | sm->pmksa = pmksa_cache_init(wpa_sm_pmksa_free_cb, sm, sm); | |
2416 | if (sm->pmksa == NULL) { | |
f049052b BG |
2417 | wpa_msg(sm->ctx->msg_ctx, MSG_ERROR, |
2418 | "RSN: PMKSA cache initialization failed"); | |
6fc6879b JM |
2419 | os_free(sm); |
2420 | return NULL; | |
2421 | } | |
2422 | ||
2423 | return sm; | |
2424 | } | |
2425 | ||
2426 | ||
2427 | /** | |
2428 | * wpa_sm_deinit - Deinitialize WPA state machine | |
2429 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2430 | */ | |
2431 | void wpa_sm_deinit(struct wpa_sm *sm) | |
2432 | { | |
2433 | if (sm == NULL) | |
2434 | return; | |
2435 | pmksa_cache_deinit(sm->pmksa); | |
2436 | eloop_cancel_timeout(wpa_sm_start_preauth, sm, NULL); | |
581a8cde | 2437 | eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL); |
6fc6879b JM |
2438 | os_free(sm->assoc_wpa_ie); |
2439 | os_free(sm->ap_wpa_ie); | |
2440 | os_free(sm->ap_rsn_ie); | |
71932544 | 2441 | wpa_sm_drop_sa(sm); |
6fc6879b JM |
2442 | os_free(sm->ctx); |
2443 | peerkey_deinit(sm); | |
55046414 JM |
2444 | #ifdef CONFIG_IEEE80211R |
2445 | os_free(sm->assoc_resp_ies); | |
2446 | #endif /* CONFIG_IEEE80211R */ | |
651c6a84 JM |
2447 | #ifdef CONFIG_TESTING_OPTIONS |
2448 | wpabuf_free(sm->test_assoc_ie); | |
2449 | #endif /* CONFIG_TESTING_OPTIONS */ | |
6fc6879b JM |
2450 | os_free(sm); |
2451 | } | |
2452 | ||
2453 | ||
2454 | /** | |
2455 | * wpa_sm_notify_assoc - Notify WPA state machine about association | |
2456 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2457 | * @bssid: The BSSID of the new association | |
2458 | * | |
2459 | * This function is called to let WPA state machine know that the connection | |
2460 | * was established. | |
2461 | */ | |
2462 | void wpa_sm_notify_assoc(struct wpa_sm *sm, const u8 *bssid) | |
2463 | { | |
58a98fb0 JM |
2464 | int clear_ptk = 1; |
2465 | ||
6fc6879b JM |
2466 | if (sm == NULL) |
2467 | return; | |
2468 | ||
f049052b BG |
2469 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
2470 | "WPA: Association event - clear replay counter"); | |
6fc6879b JM |
2471 | os_memcpy(sm->bssid, bssid, ETH_ALEN); |
2472 | os_memset(sm->rx_replay_counter, 0, WPA_REPLAY_COUNTER_LEN); | |
2473 | sm->rx_replay_counter_set = 0; | |
2474 | sm->renew_snonce = 1; | |
2475 | if (os_memcmp(sm->preauth_bssid, bssid, ETH_ALEN) == 0) | |
2476 | rsn_preauth_deinit(sm); | |
2477 | ||
2478 | #ifdef CONFIG_IEEE80211R | |
58a98fb0 | 2479 | if (wpa_ft_is_completed(sm)) { |
5d5a9f00 JM |
2480 | /* |
2481 | * Clear portValid to kick EAPOL state machine to re-enter | |
2482 | * AUTHENTICATED state to get the EAPOL port Authorized. | |
2483 | */ | |
2484 | eapol_sm_notify_portValid(sm->eapol, FALSE); | |
6fc6879b JM |
2485 | wpa_supplicant_key_neg_complete(sm, sm->bssid, 1); |
2486 | ||
2487 | /* Prepare for the next transition */ | |
76b7981d | 2488 | wpa_ft_prepare_auth_request(sm, NULL); |
58a98fb0 JM |
2489 | |
2490 | clear_ptk = 0; | |
6fc6879b JM |
2491 | } |
2492 | #endif /* CONFIG_IEEE80211R */ | |
706df429 JM |
2493 | #ifdef CONFIG_FILS |
2494 | if (sm->fils_completed) { | |
2495 | /* | |
2496 | * Clear portValid to kick EAPOL state machine to re-enter | |
2497 | * AUTHENTICATED state to get the EAPOL port Authorized. | |
2498 | */ | |
2499 | wpa_supplicant_key_neg_complete(sm, sm->bssid, 1); | |
2500 | clear_ptk = 0; | |
2501 | } | |
2502 | #endif /* CONFIG_FILS */ | |
58a98fb0 JM |
2503 | |
2504 | if (clear_ptk) { | |
2505 | /* | |
2506 | * IEEE 802.11, 8.4.10: Delete PTK SA on (re)association if | |
2507 | * this is not part of a Fast BSS Transition. | |
2508 | */ | |
f049052b | 2509 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PTK"); |
58a98fb0 | 2510 | sm->ptk_set = 0; |
d2c33b91 | 2511 | os_memset(&sm->ptk, 0, sizeof(sm->ptk)); |
58a98fb0 | 2512 | sm->tptk_set = 0; |
d2c33b91 | 2513 | os_memset(&sm->tptk, 0, sizeof(sm->tptk)); |
58a98fb0 | 2514 | } |
40cf22e6 JM |
2515 | |
2516 | #ifdef CONFIG_TDLS | |
2517 | wpa_tdls_assoc(sm); | |
2518 | #endif /* CONFIG_TDLS */ | |
25ef8529 JM |
2519 | |
2520 | #ifdef CONFIG_P2P | |
2521 | os_memset(sm->p2p_ip_addr, 0, sizeof(sm->p2p_ip_addr)); | |
2522 | #endif /* CONFIG_P2P */ | |
6fc6879b JM |
2523 | } |
2524 | ||
2525 | ||
2526 | /** | |
2527 | * wpa_sm_notify_disassoc - Notify WPA state machine about disassociation | |
2528 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2529 | * | |
2530 | * This function is called to let WPA state machine know that the connection | |
2531 | * was lost. This will abort any existing pre-authentication session. | |
2532 | */ | |
2533 | void wpa_sm_notify_disassoc(struct wpa_sm *sm) | |
2534 | { | |
ac8e074e JM |
2535 | eloop_cancel_timeout(wpa_sm_start_preauth, sm, NULL); |
2536 | eloop_cancel_timeout(wpa_sm_rekey_ptk, sm, NULL); | |
77327298 | 2537 | peerkey_deinit(sm); |
6fc6879b | 2538 | rsn_preauth_deinit(sm); |
0639970d | 2539 | pmksa_cache_clear_current(sm); |
6fc6879b JM |
2540 | if (wpa_sm_get_state(sm) == WPA_4WAY_HANDSHAKE) |
2541 | sm->dot11RSNA4WayHandshakeFailures++; | |
40cf22e6 JM |
2542 | #ifdef CONFIG_TDLS |
2543 | wpa_tdls_disassoc(sm); | |
2544 | #endif /* CONFIG_TDLS */ | |
706df429 JM |
2545 | #ifdef CONFIG_FILS |
2546 | sm->fils_completed = 0; | |
2547 | #endif /* CONFIG_FILS */ | |
71932544 JM |
2548 | |
2549 | /* Keys are not needed in the WPA state machine anymore */ | |
2550 | wpa_sm_drop_sa(sm); | |
761396e4 JM |
2551 | |
2552 | sm->msg_3_of_4_ok = 0; | |
6fc6879b JM |
2553 | } |
2554 | ||
2555 | ||
2556 | /** | |
2557 | * wpa_sm_set_pmk - Set PMK | |
2558 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2559 | * @pmk: The new PMK | |
2560 | * @pmk_len: The length of the new PMK in bytes | |
70c93963 | 2561 | * @pmkid: Calculated PMKID |
bc26ac50 | 2562 | * @bssid: AA to add into PMKSA cache or %NULL to not cache the PMK |
6fc6879b JM |
2563 | * |
2564 | * Configure the PMK for WPA state machine. | |
2565 | */ | |
bc26ac50 | 2566 | void wpa_sm_set_pmk(struct wpa_sm *sm, const u8 *pmk, size_t pmk_len, |
70c93963 | 2567 | const u8 *pmkid, const u8 *bssid) |
6fc6879b JM |
2568 | { |
2569 | if (sm == NULL) | |
2570 | return; | |
2571 | ||
2572 | sm->pmk_len = pmk_len; | |
2573 | os_memcpy(sm->pmk, pmk, pmk_len); | |
2574 | ||
2575 | #ifdef CONFIG_IEEE80211R | |
2576 | /* Set XXKey to be PSK for FT key derivation */ | |
2577 | sm->xxkey_len = pmk_len; | |
2578 | os_memcpy(sm->xxkey, pmk, pmk_len); | |
2579 | #endif /* CONFIG_IEEE80211R */ | |
bc26ac50 JM |
2580 | |
2581 | if (bssid) { | |
70c93963 | 2582 | pmksa_cache_add(sm->pmksa, pmk, pmk_len, pmkid, NULL, 0, |
087a1f4e | 2583 | bssid, sm->own_addr, |
869af307 | 2584 | sm->network_ctx, sm->key_mgmt, NULL); |
bc26ac50 | 2585 | } |
6fc6879b JM |
2586 | } |
2587 | ||
2588 | ||
2589 | /** | |
2590 | * wpa_sm_set_pmk_from_pmksa - Set PMK based on the current PMKSA | |
2591 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2592 | * | |
2593 | * Take the PMK from the current PMKSA into use. If no PMKSA is active, the PMK | |
2594 | * will be cleared. | |
2595 | */ | |
2596 | void wpa_sm_set_pmk_from_pmksa(struct wpa_sm *sm) | |
2597 | { | |
2598 | if (sm == NULL) | |
2599 | return; | |
2600 | ||
2601 | if (sm->cur_pmksa) { | |
2602 | sm->pmk_len = sm->cur_pmksa->pmk_len; | |
2603 | os_memcpy(sm->pmk, sm->cur_pmksa->pmk, sm->pmk_len); | |
2604 | } else { | |
2605 | sm->pmk_len = PMK_LEN; | |
2606 | os_memset(sm->pmk, 0, PMK_LEN); | |
2607 | } | |
2608 | } | |
2609 | ||
2610 | ||
2611 | /** | |
2612 | * wpa_sm_set_fast_reauth - Set fast reauthentication (EAP) enabled/disabled | |
2613 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2614 | * @fast_reauth: Whether fast reauthentication (EAP) is allowed | |
2615 | */ | |
2616 | void wpa_sm_set_fast_reauth(struct wpa_sm *sm, int fast_reauth) | |
2617 | { | |
2618 | if (sm) | |
2619 | sm->fast_reauth = fast_reauth; | |
2620 | } | |
2621 | ||
2622 | ||
2623 | /** | |
2624 | * wpa_sm_set_scard_ctx - Set context pointer for smartcard callbacks | |
2625 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2626 | * @scard_ctx: Context pointer for smartcard related callback functions | |
2627 | */ | |
2628 | void wpa_sm_set_scard_ctx(struct wpa_sm *sm, void *scard_ctx) | |
2629 | { | |
2630 | if (sm == NULL) | |
2631 | return; | |
2632 | sm->scard_ctx = scard_ctx; | |
2633 | if (sm->preauth_eapol) | |
2634 | eapol_sm_register_scard_ctx(sm->preauth_eapol, scard_ctx); | |
2635 | } | |
2636 | ||
2637 | ||
2638 | /** | |
2639 | * wpa_sm_set_config - Notification of current configration change | |
2640 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2641 | * @config: Pointer to current network configuration | |
2642 | * | |
2643 | * Notify WPA state machine that configuration has changed. config will be | |
2644 | * stored as a backpointer to network configuration. This can be %NULL to clear | |
2645 | * the stored pointed. | |
2646 | */ | |
2647 | void wpa_sm_set_config(struct wpa_sm *sm, struct rsn_supp_config *config) | |
2648 | { | |
2649 | if (!sm) | |
2650 | return; | |
2651 | ||
6fc6879b | 2652 | if (config) { |
886a807f | 2653 | sm->network_ctx = config->network_ctx; |
6fc6879b JM |
2654 | sm->peerkey_enabled = config->peerkey_enabled; |
2655 | sm->allowed_pairwise_cipher = config->allowed_pairwise_cipher; | |
2656 | sm->proactive_key_caching = config->proactive_key_caching; | |
2657 | sm->eap_workaround = config->eap_workaround; | |
2658 | sm->eap_conf_ctx = config->eap_conf_ctx; | |
2659 | if (config->ssid) { | |
2660 | os_memcpy(sm->ssid, config->ssid, config->ssid_len); | |
2661 | sm->ssid_len = config->ssid_len; | |
2662 | } else | |
2663 | sm->ssid_len = 0; | |
581a8cde | 2664 | sm->wpa_ptk_rekey = config->wpa_ptk_rekey; |
25ef8529 | 2665 | sm->p2p = config->p2p; |
73ed03f3 | 2666 | sm->wpa_rsc_relaxation = config->wpa_rsc_relaxation; |
869af307 JM |
2667 | #ifdef CONFIG_FILS |
2668 | if (config->fils_cache_id) { | |
2669 | sm->fils_cache_id_set = 1; | |
2670 | os_memcpy(sm->fils_cache_id, config->fils_cache_id, | |
2671 | FILS_CACHE_ID_LEN); | |
2672 | } else { | |
2673 | sm->fils_cache_id_set = 0; | |
2674 | } | |
2675 | #endif /* CONFIG_FILS */ | |
6fc6879b | 2676 | } else { |
886a807f | 2677 | sm->network_ctx = NULL; |
6fc6879b JM |
2678 | sm->peerkey_enabled = 0; |
2679 | sm->allowed_pairwise_cipher = 0; | |
2680 | sm->proactive_key_caching = 0; | |
2681 | sm->eap_workaround = 0; | |
2682 | sm->eap_conf_ctx = NULL; | |
2683 | sm->ssid_len = 0; | |
581a8cde | 2684 | sm->wpa_ptk_rekey = 0; |
25ef8529 | 2685 | sm->p2p = 0; |
73ed03f3 | 2686 | sm->wpa_rsc_relaxation = 0; |
6fc6879b | 2687 | } |
6fc6879b JM |
2688 | } |
2689 | ||
2690 | ||
2691 | /** | |
2692 | * wpa_sm_set_own_addr - Set own MAC address | |
2693 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2694 | * @addr: Own MAC address | |
2695 | */ | |
2696 | void wpa_sm_set_own_addr(struct wpa_sm *sm, const u8 *addr) | |
2697 | { | |
2698 | if (sm) | |
2699 | os_memcpy(sm->own_addr, addr, ETH_ALEN); | |
2700 | } | |
2701 | ||
2702 | ||
2703 | /** | |
2704 | * wpa_sm_set_ifname - Set network interface name | |
2705 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2706 | * @ifname: Interface name | |
2707 | * @bridge_ifname: Optional bridge interface name (for pre-auth) | |
2708 | */ | |
2709 | void wpa_sm_set_ifname(struct wpa_sm *sm, const char *ifname, | |
2710 | const char *bridge_ifname) | |
2711 | { | |
2712 | if (sm) { | |
2713 | sm->ifname = ifname; | |
2714 | sm->bridge_ifname = bridge_ifname; | |
2715 | } | |
2716 | } | |
2717 | ||
2718 | ||
2719 | /** | |
2720 | * wpa_sm_set_eapol - Set EAPOL state machine pointer | |
2721 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2722 | * @eapol: Pointer to EAPOL state machine allocated with eapol_sm_init() | |
2723 | */ | |
2724 | void wpa_sm_set_eapol(struct wpa_sm *sm, struct eapol_sm *eapol) | |
2725 | { | |
2726 | if (sm) | |
2727 | sm->eapol = eapol; | |
2728 | } | |
2729 | ||
2730 | ||
2731 | /** | |
2732 | * wpa_sm_set_param - Set WPA state machine parameters | |
2733 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2734 | * @param: Parameter field | |
2735 | * @value: Parameter value | |
2736 | * Returns: 0 on success, -1 on failure | |
2737 | */ | |
2738 | int wpa_sm_set_param(struct wpa_sm *sm, enum wpa_sm_conf_params param, | |
2739 | unsigned int value) | |
2740 | { | |
2741 | int ret = 0; | |
2742 | ||
2743 | if (sm == NULL) | |
2744 | return -1; | |
2745 | ||
2746 | switch (param) { | |
2747 | case RSNA_PMK_LIFETIME: | |
2748 | if (value > 0) | |
2749 | sm->dot11RSNAConfigPMKLifetime = value; | |
2750 | else | |
2751 | ret = -1; | |
2752 | break; | |
2753 | case RSNA_PMK_REAUTH_THRESHOLD: | |
2754 | if (value > 0 && value <= 100) | |
2755 | sm->dot11RSNAConfigPMKReauthThreshold = value; | |
2756 | else | |
2757 | ret = -1; | |
2758 | break; | |
2759 | case RSNA_SA_TIMEOUT: | |
2760 | if (value > 0) | |
2761 | sm->dot11RSNAConfigSATimeout = value; | |
2762 | else | |
2763 | ret = -1; | |
2764 | break; | |
2765 | case WPA_PARAM_PROTO: | |
2766 | sm->proto = value; | |
2767 | break; | |
2768 | case WPA_PARAM_PAIRWISE: | |
2769 | sm->pairwise_cipher = value; | |
2770 | break; | |
2771 | case WPA_PARAM_GROUP: | |
2772 | sm->group_cipher = value; | |
2773 | break; | |
2774 | case WPA_PARAM_KEY_MGMT: | |
2775 | sm->key_mgmt = value; | |
2776 | break; | |
2777 | #ifdef CONFIG_IEEE80211W | |
2778 | case WPA_PARAM_MGMT_GROUP: | |
2779 | sm->mgmt_group_cipher = value; | |
2780 | break; | |
2781 | #endif /* CONFIG_IEEE80211W */ | |
2782 | case WPA_PARAM_RSN_ENABLED: | |
2783 | sm->rsn_enabled = value; | |
2784 | break; | |
e820cf95 JM |
2785 | case WPA_PARAM_MFP: |
2786 | sm->mfp = value; | |
2787 | break; | |
6fc6879b JM |
2788 | default: |
2789 | break; | |
2790 | } | |
2791 | ||
2792 | return ret; | |
2793 | } | |
2794 | ||
2795 | ||
6fc6879b JM |
2796 | /** |
2797 | * wpa_sm_get_status - Get WPA state machine | |
2798 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2799 | * @buf: Buffer for status information | |
2800 | * @buflen: Maximum buffer length | |
2801 | * @verbose: Whether to include verbose status information | |
2802 | * Returns: Number of bytes written to buf. | |
2803 | * | |
2804 | * Query WPA state machine for status information. This function fills in | |
2805 | * a text area with current status information. If the buffer (buf) is not | |
2806 | * large enough, status information will be truncated to fit the buffer. | |
2807 | */ | |
2808 | int wpa_sm_get_status(struct wpa_sm *sm, char *buf, size_t buflen, | |
2809 | int verbose) | |
2810 | { | |
2811 | char *pos = buf, *end = buf + buflen; | |
2812 | int ret; | |
2813 | ||
2814 | ret = os_snprintf(pos, end - pos, | |
2815 | "pairwise_cipher=%s\n" | |
2816 | "group_cipher=%s\n" | |
2817 | "key_mgmt=%s\n", | |
2818 | wpa_cipher_txt(sm->pairwise_cipher), | |
2819 | wpa_cipher_txt(sm->group_cipher), | |
2820 | wpa_key_mgmt_txt(sm->key_mgmt, sm->proto)); | |
d85e1fc8 | 2821 | if (os_snprintf_error(end - pos, ret)) |
6fc6879b JM |
2822 | return pos - buf; |
2823 | pos += ret; | |
13e1d2e2 JM |
2824 | |
2825 | if (sm->mfp != NO_MGMT_FRAME_PROTECTION && sm->ap_rsn_ie) { | |
2826 | struct wpa_ie_data rsn; | |
2827 | if (wpa_parse_wpa_ie_rsn(sm->ap_rsn_ie, sm->ap_rsn_ie_len, &rsn) | |
2828 | >= 0 && | |
2829 | rsn.capabilities & (WPA_CAPABILITY_MFPR | | |
2830 | WPA_CAPABILITY_MFPC)) { | |
2831 | ret = os_snprintf(pos, end - pos, "pmf=%d\n", | |
2832 | (rsn.capabilities & | |
2833 | WPA_CAPABILITY_MFPR) ? 2 : 1); | |
d85e1fc8 | 2834 | if (os_snprintf_error(end - pos, ret)) |
13e1d2e2 JM |
2835 | return pos - buf; |
2836 | pos += ret; | |
2837 | } | |
2838 | } | |
2839 | ||
6fc6879b JM |
2840 | return pos - buf; |
2841 | } | |
2842 | ||
2843 | ||
ae8535b6 JM |
2844 | int wpa_sm_pmf_enabled(struct wpa_sm *sm) |
2845 | { | |
2846 | struct wpa_ie_data rsn; | |
2847 | ||
2848 | if (sm->mfp == NO_MGMT_FRAME_PROTECTION || !sm->ap_rsn_ie) | |
2849 | return 0; | |
2850 | ||
2851 | if (wpa_parse_wpa_ie_rsn(sm->ap_rsn_ie, sm->ap_rsn_ie_len, &rsn) >= 0 && | |
2852 | rsn.capabilities & (WPA_CAPABILITY_MFPR | WPA_CAPABILITY_MFPC)) | |
2853 | return 1; | |
2854 | ||
2855 | return 0; | |
2856 | } | |
2857 | ||
2858 | ||
6fc6879b JM |
2859 | /** |
2860 | * wpa_sm_set_assoc_wpa_ie_default - Generate own WPA/RSN IE from configuration | |
2861 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2862 | * @wpa_ie: Pointer to buffer for WPA/RSN IE | |
2863 | * @wpa_ie_len: Pointer to the length of the wpa_ie buffer | |
2864 | * Returns: 0 on success, -1 on failure | |
2865 | */ | |
2866 | int wpa_sm_set_assoc_wpa_ie_default(struct wpa_sm *sm, u8 *wpa_ie, | |
2867 | size_t *wpa_ie_len) | |
2868 | { | |
2869 | int res; | |
2870 | ||
2871 | if (sm == NULL) | |
2872 | return -1; | |
2873 | ||
651c6a84 JM |
2874 | #ifdef CONFIG_TESTING_OPTIONS |
2875 | if (sm->test_assoc_ie) { | |
2876 | wpa_printf(MSG_DEBUG, | |
2877 | "TESTING: Replace association WPA/RSN IE"); | |
2878 | if (*wpa_ie_len < wpabuf_len(sm->test_assoc_ie)) | |
2879 | return -1; | |
2880 | os_memcpy(wpa_ie, wpabuf_head(sm->test_assoc_ie), | |
2881 | wpabuf_len(sm->test_assoc_ie)); | |
2882 | res = wpabuf_len(sm->test_assoc_ie); | |
2883 | } else | |
2884 | #endif /* CONFIG_TESTING_OPTIONS */ | |
6fc6879b JM |
2885 | res = wpa_gen_wpa_ie(sm, wpa_ie, *wpa_ie_len); |
2886 | if (res < 0) | |
2887 | return -1; | |
2888 | *wpa_ie_len = res; | |
2889 | ||
2890 | wpa_hexdump(MSG_DEBUG, "WPA: Set own WPA IE default", | |
2891 | wpa_ie, *wpa_ie_len); | |
2892 | ||
2893 | if (sm->assoc_wpa_ie == NULL) { | |
2894 | /* | |
2895 | * Make a copy of the WPA/RSN IE so that 4-Way Handshake gets | |
2896 | * the correct version of the IE even if PMKSA caching is | |
2897 | * aborted (which would remove PMKID from IE generation). | |
2898 | */ | |
a1f11e34 | 2899 | sm->assoc_wpa_ie = os_memdup(wpa_ie, *wpa_ie_len); |
6fc6879b JM |
2900 | if (sm->assoc_wpa_ie == NULL) |
2901 | return -1; | |
2902 | ||
6fc6879b | 2903 | sm->assoc_wpa_ie_len = *wpa_ie_len; |
0866ed00 JM |
2904 | } else { |
2905 | wpa_hexdump(MSG_DEBUG, | |
2906 | "WPA: Leave previously set WPA IE default", | |
2907 | sm->assoc_wpa_ie, sm->assoc_wpa_ie_len); | |
6fc6879b JM |
2908 | } |
2909 | ||
2910 | return 0; | |
2911 | } | |
2912 | ||
2913 | ||
2914 | /** | |
2915 | * wpa_sm_set_assoc_wpa_ie - Set own WPA/RSN IE from (Re)AssocReq | |
2916 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2917 | * @ie: Pointer to IE data (starting from id) | |
2918 | * @len: IE length | |
2919 | * Returns: 0 on success, -1 on failure | |
2920 | * | |
2921 | * Inform WPA state machine about the WPA/RSN IE used in (Re)Association | |
2922 | * Request frame. The IE will be used to override the default value generated | |
2923 | * with wpa_sm_set_assoc_wpa_ie_default(). | |
2924 | */ | |
2925 | int wpa_sm_set_assoc_wpa_ie(struct wpa_sm *sm, const u8 *ie, size_t len) | |
2926 | { | |
2927 | if (sm == NULL) | |
2928 | return -1; | |
2929 | ||
2930 | os_free(sm->assoc_wpa_ie); | |
2931 | if (ie == NULL || len == 0) { | |
f049052b BG |
2932 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
2933 | "WPA: clearing own WPA/RSN IE"); | |
6fc6879b JM |
2934 | sm->assoc_wpa_ie = NULL; |
2935 | sm->assoc_wpa_ie_len = 0; | |
2936 | } else { | |
2937 | wpa_hexdump(MSG_DEBUG, "WPA: set own WPA/RSN IE", ie, len); | |
a1f11e34 | 2938 | sm->assoc_wpa_ie = os_memdup(ie, len); |
6fc6879b JM |
2939 | if (sm->assoc_wpa_ie == NULL) |
2940 | return -1; | |
2941 | ||
6fc6879b JM |
2942 | sm->assoc_wpa_ie_len = len; |
2943 | } | |
2944 | ||
2945 | return 0; | |
2946 | } | |
2947 | ||
2948 | ||
2949 | /** | |
2950 | * wpa_sm_set_ap_wpa_ie - Set AP WPA IE from Beacon/ProbeResp | |
2951 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2952 | * @ie: Pointer to IE data (starting from id) | |
2953 | * @len: IE length | |
2954 | * Returns: 0 on success, -1 on failure | |
2955 | * | |
2956 | * Inform WPA state machine about the WPA IE used in Beacon / Probe Response | |
2957 | * frame. | |
2958 | */ | |
2959 | int wpa_sm_set_ap_wpa_ie(struct wpa_sm *sm, const u8 *ie, size_t len) | |
2960 | { | |
2961 | if (sm == NULL) | |
2962 | return -1; | |
2963 | ||
2964 | os_free(sm->ap_wpa_ie); | |
2965 | if (ie == NULL || len == 0) { | |
f049052b BG |
2966 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
2967 | "WPA: clearing AP WPA IE"); | |
6fc6879b JM |
2968 | sm->ap_wpa_ie = NULL; |
2969 | sm->ap_wpa_ie_len = 0; | |
2970 | } else { | |
2971 | wpa_hexdump(MSG_DEBUG, "WPA: set AP WPA IE", ie, len); | |
a1f11e34 | 2972 | sm->ap_wpa_ie = os_memdup(ie, len); |
6fc6879b JM |
2973 | if (sm->ap_wpa_ie == NULL) |
2974 | return -1; | |
2975 | ||
6fc6879b JM |
2976 | sm->ap_wpa_ie_len = len; |
2977 | } | |
2978 | ||
2979 | return 0; | |
2980 | } | |
2981 | ||
2982 | ||
2983 | /** | |
2984 | * wpa_sm_set_ap_rsn_ie - Set AP RSN IE from Beacon/ProbeResp | |
2985 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
2986 | * @ie: Pointer to IE data (starting from id) | |
2987 | * @len: IE length | |
2988 | * Returns: 0 on success, -1 on failure | |
2989 | * | |
2990 | * Inform WPA state machine about the RSN IE used in Beacon / Probe Response | |
2991 | * frame. | |
2992 | */ | |
2993 | int wpa_sm_set_ap_rsn_ie(struct wpa_sm *sm, const u8 *ie, size_t len) | |
2994 | { | |
2995 | if (sm == NULL) | |
2996 | return -1; | |
2997 | ||
2998 | os_free(sm->ap_rsn_ie); | |
2999 | if (ie == NULL || len == 0) { | |
f049052b BG |
3000 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
3001 | "WPA: clearing AP RSN IE"); | |
6fc6879b JM |
3002 | sm->ap_rsn_ie = NULL; |
3003 | sm->ap_rsn_ie_len = 0; | |
3004 | } else { | |
3005 | wpa_hexdump(MSG_DEBUG, "WPA: set AP RSN IE", ie, len); | |
a1f11e34 | 3006 | sm->ap_rsn_ie = os_memdup(ie, len); |
6fc6879b JM |
3007 | if (sm->ap_rsn_ie == NULL) |
3008 | return -1; | |
3009 | ||
6fc6879b JM |
3010 | sm->ap_rsn_ie_len = len; |
3011 | } | |
3012 | ||
3013 | return 0; | |
3014 | } | |
3015 | ||
3016 | ||
3017 | /** | |
3018 | * wpa_sm_parse_own_wpa_ie - Parse own WPA/RSN IE | |
3019 | * @sm: Pointer to WPA state machine data from wpa_sm_init() | |
3020 | * @data: Pointer to data area for parsing results | |
3021 | * Returns: 0 on success, -1 if IE is not known, or -2 on parsing failure | |
3022 | * | |
3023 | * Parse the contents of the own WPA or RSN IE from (Re)AssocReq and write the | |
3024 | * parsed data into data. | |
3025 | */ | |
3026 | int wpa_sm_parse_own_wpa_ie(struct wpa_sm *sm, struct wpa_ie_data *data) | |
3027 | { | |
2a522e71 JM |
3028 | if (sm == NULL) |
3029 | return -1; | |
3030 | ||
3031 | if (sm->assoc_wpa_ie == NULL) { | |
f049052b BG |
3032 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, |
3033 | "WPA: No WPA/RSN IE available from association info"); | |
6fc6879b JM |
3034 | return -1; |
3035 | } | |
3036 | if (wpa_parse_wpa_ie(sm->assoc_wpa_ie, sm->assoc_wpa_ie_len, data)) | |
3037 | return -2; | |
3038 | return 0; | |
3039 | } | |
540264a7 JM |
3040 | |
3041 | ||
3042 | int wpa_sm_pmksa_cache_list(struct wpa_sm *sm, char *buf, size_t len) | |
3043 | { | |
540264a7 | 3044 | return pmksa_cache_list(sm->pmksa, buf, len); |
540264a7 | 3045 | } |
32d5295f JM |
3046 | |
3047 | ||
3459381d JM |
3048 | struct rsn_pmksa_cache_entry * wpa_sm_pmksa_cache_head(struct wpa_sm *sm) |
3049 | { | |
3050 | return pmksa_cache_head(sm->pmksa); | |
3051 | } | |
3052 | ||
3053 | ||
3054 | struct rsn_pmksa_cache_entry * | |
3055 | wpa_sm_pmksa_cache_add_entry(struct wpa_sm *sm, | |
3056 | struct rsn_pmksa_cache_entry * entry) | |
3057 | { | |
3058 | return pmksa_cache_add_entry(sm->pmksa, entry); | |
3059 | } | |
3060 | ||
3061 | ||
32d5295f JM |
3062 | void wpa_sm_drop_sa(struct wpa_sm *sm) |
3063 | { | |
f049052b | 3064 | wpa_dbg(sm->ctx->msg_ctx, MSG_DEBUG, "WPA: Clear old PMK and PTK"); |
32d5295f JM |
3065 | sm->ptk_set = 0; |
3066 | sm->tptk_set = 0; | |
3067 | os_memset(sm->pmk, 0, sizeof(sm->pmk)); | |
3068 | os_memset(&sm->ptk, 0, sizeof(sm->ptk)); | |
3069 | os_memset(&sm->tptk, 0, sizeof(sm->tptk)); | |
71932544 JM |
3070 | #ifdef CONFIG_IEEE80211R |
3071 | os_memset(sm->xxkey, 0, sizeof(sm->xxkey)); | |
3072 | os_memset(sm->pmk_r0, 0, sizeof(sm->pmk_r0)); | |
3073 | os_memset(sm->pmk_r1, 0, sizeof(sm->pmk_r1)); | |
3074 | #endif /* CONFIG_IEEE80211R */ | |
32d5295f | 3075 | } |
0d7b4409 JM |
3076 | |
3077 | ||
3078 | int wpa_sm_has_ptk(struct wpa_sm *sm) | |
3079 | { | |
3080 | if (sm == NULL) | |
3081 | return 0; | |
3082 | return sm->ptk_set; | |
3083 | } | |
b14a210c JB |
3084 | |
3085 | ||
3086 | void wpa_sm_update_replay_ctr(struct wpa_sm *sm, const u8 *replay_ctr) | |
3087 | { | |
3088 | os_memcpy(sm->rx_replay_counter, replay_ctr, WPA_REPLAY_COUNTER_LEN); | |
3089 | } | |
d8a790b9 JM |
3090 | |
3091 | ||
3092 | void wpa_sm_pmksa_cache_flush(struct wpa_sm *sm, void *network_ctx) | |
3093 | { | |
4033935d | 3094 | pmksa_cache_flush(sm->pmksa, network_ctx, NULL, 0); |
d8a790b9 | 3095 | } |
75cad1a0 XC |
3096 | |
3097 | ||
ad3872a3 | 3098 | #ifdef CONFIG_WNM |
75cad1a0 XC |
3099 | int wpa_wnmsleep_install_key(struct wpa_sm *sm, u8 subelem_id, u8 *buf) |
3100 | { | |
75cad1a0 XC |
3101 | u16 keyinfo; |
3102 | u8 keylen; /* plaintext key len */ | |
75cad1a0 XC |
3103 | u8 *key_rsc; |
3104 | ||
75cad1a0 | 3105 | if (subelem_id == WNM_SLEEP_SUBELEM_GTK) { |
d2c33b91 JM |
3106 | struct wpa_gtk_data gd; |
3107 | ||
3108 | os_memset(&gd, 0, sizeof(gd)); | |
3109 | keylen = wpa_cipher_key_len(sm->group_cipher); | |
3110 | gd.key_rsc_len = wpa_cipher_rsc_len(sm->group_cipher); | |
3111 | gd.alg = wpa_cipher_to_alg(sm->group_cipher); | |
3112 | if (gd.alg == WPA_ALG_NONE) { | |
3113 | wpa_printf(MSG_DEBUG, "Unsupported group cipher suite"); | |
3114 | return -1; | |
3115 | } | |
3116 | ||
75cad1a0 | 3117 | key_rsc = buf + 5; |
68db9ab0 | 3118 | keyinfo = WPA_GET_LE16(buf + 2); |
75cad1a0 XC |
3119 | gd.gtk_len = keylen; |
3120 | if (gd.gtk_len != buf[4]) { | |
3121 | wpa_printf(MSG_DEBUG, "GTK len mismatch len %d vs %d", | |
3122 | gd.gtk_len, buf[4]); | |
3123 | return -1; | |
3124 | } | |
3125 | gd.keyidx = keyinfo & 0x03; /* B0 - B1 */ | |
3126 | gd.tx = wpa_supplicant_gtk_tx_bit_workaround( | |
3127 | sm, !!(keyinfo & WPA_KEY_INFO_TXRX)); | |
3128 | ||
68db9ab0 | 3129 | os_memcpy(gd.gtk, buf + 13, gd.gtk_len); |
75cad1a0 XC |
3130 | |
3131 | wpa_hexdump_key(MSG_DEBUG, "Install GTK (WNM SLEEP)", | |
3132 | gd.gtk, gd.gtk_len); | |
3133 | if (wpa_supplicant_install_gtk(sm, &gd, key_rsc)) { | |
d2c33b91 | 3134 | os_memset(&gd, 0, sizeof(gd)); |
75cad1a0 XC |
3135 | wpa_printf(MSG_DEBUG, "Failed to install the GTK in " |
3136 | "WNM mode"); | |
3137 | return -1; | |
3138 | } | |
d2c33b91 | 3139 | os_memset(&gd, 0, sizeof(gd)); |
75cad1a0 XC |
3140 | #ifdef CONFIG_IEEE80211W |
3141 | } else if (subelem_id == WNM_SLEEP_SUBELEM_IGTK) { | |
d2c33b91 JM |
3142 | struct wpa_igtk_kde igd; |
3143 | u16 keyidx; | |
3144 | ||
3145 | os_memset(&igd, 0, sizeof(igd)); | |
8dd9f9cd | 3146 | keylen = wpa_cipher_key_len(sm->mgmt_group_cipher); |
75cad1a0 XC |
3147 | os_memcpy(igd.keyid, buf + 2, 2); |
3148 | os_memcpy(igd.pn, buf + 4, 6); | |
3149 | ||
3150 | keyidx = WPA_GET_LE16(igd.keyid); | |
8dd9f9cd | 3151 | os_memcpy(igd.igtk, buf + 10, keylen); |
75cad1a0 XC |
3152 | |
3153 | wpa_hexdump_key(MSG_DEBUG, "Install IGTK (WNM SLEEP)", | |
8dd9f9cd JM |
3154 | igd.igtk, keylen); |
3155 | if (wpa_sm_set_key(sm, wpa_cipher_to_alg(sm->mgmt_group_cipher), | |
3156 | broadcast_ether_addr, | |
75cad1a0 | 3157 | keyidx, 0, igd.pn, sizeof(igd.pn), |
8dd9f9cd | 3158 | igd.igtk, keylen) < 0) { |
75cad1a0 XC |
3159 | wpa_printf(MSG_DEBUG, "Failed to install the IGTK in " |
3160 | "WNM mode"); | |
d2c33b91 | 3161 | os_memset(&igd, 0, sizeof(igd)); |
75cad1a0 XC |
3162 | return -1; |
3163 | } | |
d2c33b91 | 3164 | os_memset(&igd, 0, sizeof(igd)); |
75cad1a0 XC |
3165 | #endif /* CONFIG_IEEE80211W */ |
3166 | } else { | |
3167 | wpa_printf(MSG_DEBUG, "Unknown element id"); | |
3168 | return -1; | |
3169 | } | |
3170 | ||
3171 | return 0; | |
3172 | } | |
ad3872a3 | 3173 | #endif /* CONFIG_WNM */ |
db76aa64 JM |
3174 | |
3175 | ||
3176 | #ifdef CONFIG_PEERKEY | |
3177 | int wpa_sm_rx_eapol_peerkey(struct wpa_sm *sm, const u8 *src_addr, | |
3178 | const u8 *buf, size_t len) | |
3179 | { | |
3180 | struct wpa_peerkey *peerkey; | |
3181 | ||
3182 | for (peerkey = sm->peerkey; peerkey; peerkey = peerkey->next) { | |
3183 | if (os_memcmp(peerkey->addr, src_addr, ETH_ALEN) == 0) | |
3184 | break; | |
3185 | } | |
3186 | ||
3187 | if (!peerkey) | |
3188 | return 0; | |
3189 | ||
3190 | wpa_sm_rx_eapol(sm, src_addr, buf, len); | |
3191 | ||
3192 | return 1; | |
3193 | } | |
3194 | #endif /* CONFIG_PEERKEY */ | |
25ef8529 JM |
3195 | |
3196 | ||
3197 | #ifdef CONFIG_P2P | |
3198 | ||
3199 | int wpa_sm_get_p2p_ip_addr(struct wpa_sm *sm, u8 *buf) | |
3200 | { | |
3201 | if (sm == NULL || WPA_GET_BE32(sm->p2p_ip_addr) == 0) | |
3202 | return -1; | |
3203 | os_memcpy(buf, sm->p2p_ip_addr, 3 * 4); | |
3204 | return 0; | |
3205 | } | |
3206 | ||
3207 | #endif /* CONFIG_P2P */ | |
b41f2684 CL |
3208 | |
3209 | ||
3210 | void wpa_sm_set_rx_replay_ctr(struct wpa_sm *sm, const u8 *rx_replay_counter) | |
3211 | { | |
3212 | if (rx_replay_counter == NULL) | |
3213 | return; | |
3214 | ||
3215 | os_memcpy(sm->rx_replay_counter, rx_replay_counter, | |
3216 | WPA_REPLAY_COUNTER_LEN); | |
3217 | sm->rx_replay_counter_set = 1; | |
3218 | wpa_printf(MSG_DEBUG, "Updated key replay counter"); | |
3219 | } | |
3220 | ||
3221 | ||
98cd3d1c JM |
3222 | void wpa_sm_set_ptk_kck_kek(struct wpa_sm *sm, |
3223 | const u8 *ptk_kck, size_t ptk_kck_len, | |
3224 | const u8 *ptk_kek, size_t ptk_kek_len) | |
b41f2684 | 3225 | { |
98cd3d1c JM |
3226 | if (ptk_kck && ptk_kck_len <= WPA_KCK_MAX_LEN) { |
3227 | os_memcpy(sm->ptk.kck, ptk_kck, ptk_kck_len); | |
3228 | sm->ptk.kck_len = ptk_kck_len; | |
b41f2684 CL |
3229 | wpa_printf(MSG_DEBUG, "Updated PTK KCK"); |
3230 | } | |
98cd3d1c JM |
3231 | if (ptk_kek && ptk_kek_len <= WPA_KEK_MAX_LEN) { |
3232 | os_memcpy(sm->ptk.kek, ptk_kek, ptk_kek_len); | |
3233 | sm->ptk.kek_len = ptk_kek_len; | |
b41f2684 CL |
3234 | wpa_printf(MSG_DEBUG, "Updated PTK KEK"); |
3235 | } | |
3236 | sm->ptk_set = 1; | |
3237 | } | |
651c6a84 JM |
3238 | |
3239 | ||
3240 | #ifdef CONFIG_TESTING_OPTIONS | |
3241 | void wpa_sm_set_test_assoc_ie(struct wpa_sm *sm, struct wpabuf *buf) | |
3242 | { | |
3243 | wpabuf_free(sm->test_assoc_ie); | |
3244 | sm->test_assoc_ie = buf; | |
3245 | } | |
3246 | #endif /* CONFIG_TESTING_OPTIONS */ | |
f00b9b88 JM |
3247 | |
3248 | ||
3249 | #ifdef CONFIG_FILS | |
3250 | ||
3251 | struct wpabuf * fils_build_auth(struct wpa_sm *sm) | |
3252 | { | |
3253 | struct wpabuf *buf = NULL; | |
3254 | struct wpabuf *erp_msg; | |
3255 | ||
3256 | erp_msg = eapol_sm_build_erp_reauth_start(sm->eapol); | |
3257 | if (!erp_msg && !sm->cur_pmksa) { | |
3258 | wpa_printf(MSG_DEBUG, | |
3259 | "FILS: Neither ERP EAP-Initiate/Re-auth nor PMKSA cache entry is available - skip FILS"); | |
3260 | goto fail; | |
3261 | } | |
3262 | ||
3263 | wpa_printf(MSG_DEBUG, "FILS: Try to use FILS (erp=%d pmksa_cache=%d)", | |
3264 | erp_msg != NULL, sm->cur_pmksa != NULL); | |
3265 | ||
706df429 JM |
3266 | sm->fils_completed = 0; |
3267 | ||
f00b9b88 JM |
3268 | if (!sm->assoc_wpa_ie) { |
3269 | wpa_printf(MSG_INFO, "FILS: No own RSN IE set for FILS"); | |
3270 | goto fail; | |
3271 | } | |
3272 | ||
3273 | if (random_get_bytes(sm->fils_nonce, FILS_NONCE_LEN) < 0 || | |
3274 | random_get_bytes(sm->fils_session, FILS_SESSION_LEN) < 0) | |
3275 | goto fail; | |
3276 | ||
3277 | wpa_hexdump(MSG_DEBUG, "FILS: Generated FILS Nonce", | |
3278 | sm->fils_nonce, FILS_NONCE_LEN); | |
3279 | wpa_hexdump(MSG_DEBUG, "FILS: Generated FILS Session", | |
3280 | sm->fils_session, FILS_SESSION_LEN); | |
3281 | ||
3282 | buf = wpabuf_alloc(1000 + sm->assoc_wpa_ie_len); | |
3283 | if (!buf) | |
3284 | goto fail; | |
3285 | ||
3286 | /* Fields following the Authentication algorithm number field */ | |
3287 | ||
3288 | /* Authentication Transaction seq# */ | |
3289 | wpabuf_put_le16(buf, 1); | |
3290 | ||
3291 | /* Status Code */ | |
3292 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
3293 | ||
3294 | /* TODO: Finite Cyclic Group when using PK or PFS */ | |
3295 | /* TODO: Element when using PK or PFS */ | |
3296 | ||
3297 | /* RSNE */ | |
3298 | wpa_hexdump(MSG_DEBUG, "FILS: RSNE in FILS Authentication frame", | |
3299 | sm->assoc_wpa_ie, sm->assoc_wpa_ie_len); | |
3300 | wpabuf_put_data(buf, sm->assoc_wpa_ie, sm->assoc_wpa_ie_len); | |
3301 | ||
3302 | /* TODO: MDE when using FILS for FT initial association */ | |
3303 | /* TODO: FTE when using FILS for FT initial association */ | |
3304 | ||
3305 | /* FILS Nonce */ | |
3306 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3307 | wpabuf_put_u8(buf, 1 + FILS_NONCE_LEN); /* Length */ | |
3308 | /* Element ID Extension */ | |
3309 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_NONCE); | |
3310 | wpabuf_put_data(buf, sm->fils_nonce, FILS_NONCE_LEN); | |
3311 | ||
3312 | /* FILS Session */ | |
3313 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3314 | wpabuf_put_u8(buf, 1 + FILS_SESSION_LEN); /* Length */ | |
3315 | /* Element ID Extension */ | |
3316 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_SESSION); | |
3317 | wpabuf_put_data(buf, sm->fils_session, FILS_SESSION_LEN); | |
3318 | ||
3319 | /* FILS Wrapped Data */ | |
fcd3d6ce | 3320 | sm->fils_erp_pmkid_set = 0; |
f00b9b88 JM |
3321 | if (erp_msg) { |
3322 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3323 | wpabuf_put_u8(buf, 1 + wpabuf_len(erp_msg)); /* Length */ | |
3324 | /* Element ID Extension */ | |
3325 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_WRAPPED_DATA); | |
3326 | wpabuf_put_buf(buf, erp_msg); | |
fcd3d6ce JM |
3327 | /* Calculate pending PMKID here so that we do not need to |
3328 | * maintain a copy of the EAP-Initiate/Reauth message. */ | |
3329 | if (fils_pmkid_erp(sm->key_mgmt, wpabuf_head(erp_msg), | |
3330 | wpabuf_len(erp_msg), | |
3331 | sm->fils_erp_pmkid) == 0) | |
3332 | sm->fils_erp_pmkid_set = 1; | |
f00b9b88 JM |
3333 | } |
3334 | ||
3335 | wpa_hexdump_buf(MSG_DEBUG, "RSN: FILS fields for Authentication frame", | |
3336 | buf); | |
3337 | ||
3338 | fail: | |
3339 | wpabuf_free(erp_msg); | |
3340 | return buf; | |
3341 | } | |
3342 | ||
a6609937 | 3343 | |
ba9774bd JM |
3344 | int fils_process_auth(struct wpa_sm *sm, const u8 *bssid, const u8 *data, |
3345 | size_t len) | |
a6609937 JM |
3346 | { |
3347 | const u8 *pos, *end; | |
3348 | struct ieee802_11_elems elems; | |
3349 | struct wpa_ie_data rsn; | |
3350 | int pmkid_match = 0; | |
3351 | u8 ick[FILS_ICK_MAX_LEN]; | |
3352 | size_t ick_len; | |
3353 | int res; | |
3354 | ||
ba9774bd JM |
3355 | os_memcpy(sm->bssid, bssid, ETH_ALEN); |
3356 | ||
a6609937 JM |
3357 | wpa_hexdump(MSG_DEBUG, "FILS: Authentication frame fields", |
3358 | data, len); | |
3359 | pos = data; | |
3360 | end = data + len; | |
3361 | ||
3362 | /* TODO: Finite Cyclic Group when using PK or PFS */ | |
3363 | /* TODO: Element when using PK or PFS */ | |
3364 | ||
3365 | wpa_hexdump(MSG_DEBUG, "FILS: Remaining IEs", pos, end - pos); | |
3366 | if (ieee802_11_parse_elems(pos, end - pos, &elems, 1) == ParseFailed) { | |
3367 | wpa_printf(MSG_DEBUG, "FILS: Could not parse elements"); | |
3368 | return -1; | |
3369 | } | |
3370 | ||
3371 | /* RSNE */ | |
3372 | wpa_hexdump(MSG_DEBUG, "FILS: RSN element", elems.rsn_ie, | |
3373 | elems.rsn_ie_len); | |
3374 | if (!elems.rsn_ie || | |
3375 | wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2, elems.rsn_ie_len + 2, | |
3376 | &rsn) < 0) { | |
3377 | wpa_printf(MSG_DEBUG, "FILS: No RSN element"); | |
3378 | return -1; | |
3379 | } | |
3380 | ||
3381 | if (!elems.fils_nonce) { | |
3382 | wpa_printf(MSG_DEBUG, "FILS: No FILS Nonce field"); | |
3383 | return -1; | |
3384 | } | |
3385 | os_memcpy(sm->fils_anonce, elems.fils_nonce, FILS_NONCE_LEN); | |
3386 | wpa_hexdump(MSG_DEBUG, "FILS: ANonce", sm->fils_anonce, FILS_NONCE_LEN); | |
3387 | ||
3388 | /* TODO: MDE when using FILS+FT */ | |
3389 | /* TODO: FTE when using FILS+FT */ | |
3390 | ||
3391 | /* PMKID List */ | |
3392 | if (rsn.pmkid && rsn.num_pmkid > 0) { | |
3393 | wpa_hexdump(MSG_DEBUG, "FILS: PMKID List", | |
3394 | rsn.pmkid, rsn.num_pmkid * PMKID_LEN); | |
3395 | ||
3396 | if (rsn.num_pmkid != 1) { | |
3397 | wpa_printf(MSG_DEBUG, "FILS: Invalid PMKID selection"); | |
3398 | return -1; | |
3399 | } | |
3400 | wpa_hexdump(MSG_DEBUG, "FILS: PMKID", rsn.pmkid, PMKID_LEN); | |
3401 | if (os_memcmp(sm->cur_pmksa->pmkid, rsn.pmkid, PMKID_LEN) != 0) | |
3402 | { | |
3403 | wpa_printf(MSG_DEBUG, "FILS: PMKID mismatch"); | |
3404 | wpa_hexdump(MSG_DEBUG, "FILS: Expected PMKID", | |
3405 | sm->cur_pmksa->pmkid, PMKID_LEN); | |
3406 | return -1; | |
3407 | } | |
3408 | wpa_printf(MSG_DEBUG, | |
3409 | "FILS: Matching PMKID - continue using PMKSA caching"); | |
3410 | pmkid_match = 1; | |
3411 | } | |
3412 | if (!pmkid_match && sm->cur_pmksa) { | |
3413 | wpa_printf(MSG_DEBUG, | |
3414 | "FILS: No PMKID match - cannot use cached PMKSA entry"); | |
3415 | sm->cur_pmksa = NULL; | |
3416 | } | |
3417 | ||
3418 | /* FILS Session */ | |
3419 | if (!elems.fils_session) { | |
3420 | wpa_printf(MSG_DEBUG, "FILS: No FILS Session element"); | |
3421 | return -1; | |
3422 | } | |
3423 | wpa_hexdump(MSG_DEBUG, "FILS: FILS Session", elems.fils_session, | |
3424 | FILS_SESSION_LEN); | |
3425 | if (os_memcmp(sm->fils_session, elems.fils_session, FILS_SESSION_LEN) | |
3426 | != 0) { | |
3427 | wpa_printf(MSG_DEBUG, "FILS: Session mismatch"); | |
3428 | wpa_hexdump(MSG_DEBUG, "FILS: Expected FILS Session", | |
3429 | sm->fils_session, FILS_SESSION_LEN); | |
3430 | return -1; | |
3431 | } | |
3432 | ||
3433 | /* FILS Wrapped Data */ | |
3434 | if (!sm->cur_pmksa && elems.fils_wrapped_data) { | |
fcd3d6ce JM |
3435 | u8 rmsk[ERP_MAX_KEY_LEN]; |
3436 | size_t rmsk_len; | |
3437 | ||
a6609937 JM |
3438 | wpa_hexdump(MSG_DEBUG, "FILS: Wrapped Data", |
3439 | elems.fils_wrapped_data, | |
3440 | elems.fils_wrapped_data_len); | |
3441 | eapol_sm_process_erp_finish(sm->eapol, elems.fils_wrapped_data, | |
3442 | elems.fils_wrapped_data_len); | |
3443 | if (eapol_sm_failed(sm->eapol)) | |
3444 | return -1; | |
3445 | ||
fcd3d6ce JM |
3446 | rmsk_len = ERP_MAX_KEY_LEN; |
3447 | res = eapol_sm_get_key(sm->eapol, rmsk, rmsk_len); | |
3448 | if (res == PMK_LEN) { | |
3449 | rmsk_len = PMK_LEN; | |
3450 | res = eapol_sm_get_key(sm->eapol, rmsk, rmsk_len); | |
3451 | } | |
a6609937 JM |
3452 | if (res) |
3453 | return -1; | |
3454 | ||
fcd3d6ce JM |
3455 | res = fils_rmsk_to_pmk(sm->key_mgmt, rmsk, rmsk_len, |
3456 | sm->fils_nonce, sm->fils_anonce, NULL, 0, | |
3457 | sm->pmk, &sm->pmk_len); | |
3458 | os_memset(rmsk, 0, sizeof(rmsk)); | |
275cc942 JM |
3459 | if (res) |
3460 | return -1; | |
fcd3d6ce JM |
3461 | |
3462 | if (!sm->fils_erp_pmkid_set) { | |
3463 | wpa_printf(MSG_DEBUG, "FILS: PMKID not available"); | |
3464 | return -1; | |
3465 | } | |
3466 | wpa_hexdump(MSG_DEBUG, "FILS: PMKID", sm->fils_erp_pmkid, | |
3467 | PMKID_LEN); | |
a6609937 | 3468 | wpa_printf(MSG_DEBUG, "FILS: ERP processing succeeded - add PMKSA cache entry for the result"); |
fcd3d6ce JM |
3469 | sm->cur_pmksa = pmksa_cache_add(sm->pmksa, sm->pmk, sm->pmk_len, |
3470 | sm->fils_erp_pmkid, NULL, 0, | |
3471 | sm->bssid, sm->own_addr, | |
869af307 JM |
3472 | sm->network_ctx, sm->key_mgmt, |
3473 | NULL); | |
a6609937 JM |
3474 | } |
3475 | ||
3476 | if (!sm->cur_pmksa) { | |
3477 | wpa_printf(MSG_DEBUG, | |
3478 | "FILS: No remaining options to continue FILS authentication"); | |
3479 | return -1; | |
3480 | } | |
3481 | ||
3482 | if (fils_pmk_to_ptk(sm->pmk, sm->pmk_len, sm->own_addr, sm->bssid, | |
3483 | sm->fils_nonce, sm->fils_anonce, &sm->ptk, | |
3484 | ick, &ick_len, sm->key_mgmt, sm->pairwise_cipher) < | |
3485 | 0) { | |
3486 | wpa_printf(MSG_DEBUG, "FILS: Failed to derive PTK"); | |
3487 | return -1; | |
3488 | } | |
3489 | sm->ptk_set = 1; | |
3490 | sm->tptk_set = 0; | |
3491 | os_memset(&sm->tptk, 0, sizeof(sm->tptk)); | |
3492 | ||
3493 | res = fils_key_auth_sk(ick, ick_len, sm->fils_nonce, | |
3494 | sm->fils_anonce, sm->own_addr, sm->bssid, | |
3495 | NULL, 0, NULL, 0, /* TODO: SK+PFS */ | |
3496 | sm->key_mgmt, sm->fils_key_auth_sta, | |
3497 | sm->fils_key_auth_ap, | |
3498 | &sm->fils_key_auth_len); | |
3499 | os_memset(ick, 0, sizeof(ick)); | |
3500 | return res; | |
3501 | } | |
3502 | ||
86cd6928 JM |
3503 | |
3504 | struct wpabuf * fils_build_assoc_req(struct wpa_sm *sm, const u8 **kek, | |
3505 | size_t *kek_len, const u8 **snonce, | |
5732b770 JM |
3506 | const u8 **anonce, |
3507 | const struct wpabuf **hlp, | |
3508 | unsigned int num_hlp) | |
86cd6928 JM |
3509 | { |
3510 | struct wpabuf *buf; | |
5732b770 JM |
3511 | size_t len; |
3512 | unsigned int i; | |
86cd6928 | 3513 | |
5732b770 JM |
3514 | len = 1000; |
3515 | for (i = 0; hlp && i < num_hlp; i++) | |
3516 | len += 10 + wpabuf_len(hlp[i]); | |
3517 | buf = wpabuf_alloc(len); | |
86cd6928 JM |
3518 | if (!buf) |
3519 | return NULL; | |
3520 | ||
3521 | /* FILS Session */ | |
3522 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3523 | wpabuf_put_u8(buf, 1 + FILS_SESSION_LEN); /* Length */ | |
3524 | /* Element ID Extension */ | |
3525 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_SESSION); | |
3526 | wpabuf_put_data(buf, sm->fils_session, FILS_SESSION_LEN); | |
3527 | ||
3528 | /* Everything after FILS Session element gets encrypted in the driver | |
3529 | * with KEK. The buffer returned from here is the plaintext version. */ | |
3530 | ||
3531 | /* TODO: FILS Public Key */ | |
3532 | ||
3533 | /* FILS Key Confirm */ | |
3534 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3535 | wpabuf_put_u8(buf, 1 + sm->fils_key_auth_len); /* Length */ | |
3536 | /* Element ID Extension */ | |
3537 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_KEY_CONFIRM); | |
3538 | wpabuf_put_data(buf, sm->fils_key_auth_sta, sm->fils_key_auth_len); | |
3539 | ||
5732b770 JM |
3540 | /* FILS HLP Container */ |
3541 | for (i = 0; hlp && i < num_hlp; i++) { | |
3542 | const u8 *pos = wpabuf_head(hlp[i]); | |
3543 | size_t left = wpabuf_len(hlp[i]); | |
3544 | ||
3545 | wpabuf_put_u8(buf, WLAN_EID_EXTENSION); /* Element ID */ | |
3546 | if (left <= 254) | |
3547 | len = 1 + left; | |
3548 | else | |
3549 | len = 255; | |
3550 | wpabuf_put_u8(buf, len); /* Length */ | |
3551 | /* Element ID Extension */ | |
3552 | wpabuf_put_u8(buf, WLAN_EID_EXT_FILS_HLP_CONTAINER); | |
3553 | /* Destination MAC Address, Source MAC Address, HLP Packet. | |
3554 | * HLP Packet is in MSDU format (i.e., included the LLC/SNAP | |
3555 | * header when LPD is used). */ | |
3556 | wpabuf_put_data(buf, pos, len - 1); | |
3557 | pos += len - 1; | |
3558 | left -= len - 1; | |
3559 | while (left) { | |
3560 | wpabuf_put_u8(buf, WLAN_EID_FRAGMENT); | |
3561 | len = left > 255 ? 255 : left; | |
3562 | wpabuf_put_u8(buf, len); | |
3563 | wpabuf_put_data(buf, pos, len); | |
3564 | pos += len; | |
3565 | left -= len; | |
3566 | } | |
3567 | } | |
86cd6928 JM |
3568 | |
3569 | /* TODO: FILS IP Address Assignment */ | |
3570 | ||
3571 | wpa_hexdump_buf(MSG_DEBUG, "FILS: Association Request plaintext", buf); | |
3572 | ||
3573 | *kek = sm->ptk.kek; | |
3574 | *kek_len = sm->ptk.kek_len; | |
3575 | wpa_hexdump_key(MSG_DEBUG, "FILS: KEK for AEAD", *kek, *kek_len); | |
3576 | *snonce = sm->fils_nonce; | |
3577 | wpa_hexdump(MSG_DEBUG, "FILS: SNonce for AEAD AAD", | |
3578 | *snonce, FILS_NONCE_LEN); | |
3579 | *anonce = sm->fils_anonce; | |
3580 | wpa_hexdump(MSG_DEBUG, "FILS: ANonce for AEAD AAD", | |
3581 | *anonce, FILS_NONCE_LEN); | |
3582 | ||
3583 | return buf; | |
3584 | } | |
3585 | ||
706df429 | 3586 | |
124ddfa1 JM |
3587 | static void fils_process_hlp_resp(struct wpa_sm *sm, const u8 *resp, size_t len) |
3588 | { | |
3589 | const u8 *pos, *end; | |
3590 | ||
3591 | wpa_hexdump(MSG_MSGDUMP, "FILS: HLP response", resp, len); | |
3592 | if (len < 2 * ETH_ALEN) | |
3593 | return; | |
3594 | pos = resp + 2 * ETH_ALEN; | |
3595 | end = resp + len; | |
3596 | if (end - pos >= 6 && | |
3597 | os_memcmp(pos, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) | |
3598 | pos += 6; /* Remove SNAP/LLC header */ | |
3599 | wpa_sm_fils_hlp_rx(sm, resp, resp + ETH_ALEN, pos, end - pos); | |
3600 | } | |
3601 | ||
3602 | ||
3603 | static void fils_process_hlp_container(struct wpa_sm *sm, const u8 *pos, | |
3604 | size_t len) | |
3605 | { | |
3606 | const u8 *end = pos + len; | |
3607 | u8 *tmp, *tmp_pos; | |
3608 | ||
3609 | /* Check if there are any FILS HLP Container elements */ | |
3610 | while (end - pos >= 2) { | |
3611 | if (2 + pos[1] > end - pos) | |
3612 | return; | |
3613 | if (pos[0] == WLAN_EID_EXTENSION && | |
3614 | pos[1] >= 1 + 2 * ETH_ALEN && | |
3615 | pos[2] == WLAN_EID_EXT_FILS_HLP_CONTAINER) | |
3616 | break; | |
3617 | pos += 2 + pos[1]; | |
3618 | } | |
3619 | if (end - pos < 2) | |
3620 | return; /* No FILS HLP Container elements */ | |
3621 | ||
3622 | tmp = os_malloc(end - pos); | |
3623 | if (!tmp) | |
3624 | return; | |
3625 | ||
3626 | while (end - pos >= 2) { | |
3627 | if (2 + pos[1] > end - pos || | |
3628 | pos[0] != WLAN_EID_EXTENSION || | |
3629 | pos[1] < 1 + 2 * ETH_ALEN || | |
3630 | pos[2] != WLAN_EID_EXT_FILS_HLP_CONTAINER) | |
3631 | break; | |
3632 | tmp_pos = tmp; | |
3633 | os_memcpy(tmp_pos, pos + 3, pos[1] - 1); | |
3634 | tmp_pos += pos[1] - 1; | |
3635 | pos += 2 + pos[1]; | |
3636 | ||
3637 | /* Add possible fragments */ | |
3638 | while (end - pos >= 2 && pos[0] == WLAN_EID_FRAGMENT && | |
3639 | 2 + pos[1] <= end - pos) { | |
3640 | os_memcpy(tmp_pos, pos + 2, pos[1]); | |
3641 | tmp_pos += pos[1]; | |
3642 | pos += 2 + pos[1]; | |
3643 | } | |
3644 | ||
3645 | fils_process_hlp_resp(sm, tmp, tmp_pos - tmp); | |
3646 | } | |
3647 | ||
3648 | os_free(tmp); | |
3649 | } | |
3650 | ||
3651 | ||
706df429 JM |
3652 | int fils_process_assoc_resp(struct wpa_sm *sm, const u8 *resp, size_t len) |
3653 | { | |
3654 | const struct ieee80211_mgmt *mgmt; | |
3655 | const u8 *end, *ie_start; | |
3656 | struct ieee802_11_elems elems; | |
3657 | int keylen, rsclen; | |
3658 | enum wpa_alg alg; | |
3659 | struct wpa_gtk_data gd; | |
3660 | int maxkeylen; | |
3661 | struct wpa_eapol_ie_parse kde; | |
3662 | ||
3663 | if (!sm || !sm->ptk_set) { | |
3664 | wpa_printf(MSG_DEBUG, "FILS: No KEK available"); | |
3665 | return -1; | |
3666 | } | |
3667 | ||
3668 | if (!wpa_key_mgmt_fils(sm->key_mgmt)) { | |
3669 | wpa_printf(MSG_DEBUG, "FILS: Not a FILS AKM"); | |
3670 | return -1; | |
3671 | } | |
3672 | ||
3673 | wpa_hexdump(MSG_DEBUG, "FILS: (Re)Association Response frame", | |
3674 | resp, len); | |
3675 | ||
3676 | mgmt = (const struct ieee80211_mgmt *) resp; | |
3677 | if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_resp)) | |
3678 | return -1; | |
3679 | ||
3680 | end = resp + len; | |
3681 | /* Same offset for Association Response and Reassociation Response */ | |
3682 | ie_start = mgmt->u.assoc_resp.variable; | |
3683 | ||
3684 | if (ieee802_11_parse_elems(ie_start, end - ie_start, &elems, 1) == | |
3685 | ParseFailed) { | |
3686 | wpa_printf(MSG_DEBUG, | |
3687 | "FILS: Failed to parse decrypted elements"); | |
3688 | goto fail; | |
3689 | } | |
3690 | ||
3691 | if (!elems.fils_session) { | |
3692 | wpa_printf(MSG_DEBUG, "FILS: No FILS Session element"); | |
3693 | return -1; | |
3694 | } | |
3695 | if (os_memcmp(elems.fils_session, sm->fils_session, | |
3696 | FILS_SESSION_LEN) != 0) { | |
3697 | wpa_printf(MSG_DEBUG, "FILS: FILS Session mismatch"); | |
3698 | wpa_hexdump(MSG_DEBUG, "FILS: Received FILS Session", | |
3699 | elems.fils_session, FILS_SESSION_LEN); | |
3700 | wpa_hexdump(MSG_DEBUG, "FILS: Expected FILS Session", | |
3701 | sm->fils_session, FILS_SESSION_LEN); | |
3702 | } | |
3703 | ||
3704 | /* TODO: FILS Public Key */ | |
3705 | ||
3706 | if (!elems.fils_key_confirm) { | |
3707 | wpa_printf(MSG_DEBUG, "FILS: No FILS Key Confirm element"); | |
3708 | goto fail; | |
3709 | } | |
3710 | if (elems.fils_key_confirm_len != sm->fils_key_auth_len) { | |
3711 | wpa_printf(MSG_DEBUG, | |
3712 | "FILS: Unexpected Key-Auth length %d (expected %d)", | |
3713 | elems.fils_key_confirm_len, | |
3714 | (int) sm->fils_key_auth_len); | |
3715 | goto fail; | |
3716 | } | |
3717 | if (os_memcmp(elems.fils_key_confirm, sm->fils_key_auth_ap, | |
3718 | sm->fils_key_auth_len) != 0) { | |
3719 | wpa_printf(MSG_DEBUG, "FILS: Key-Auth mismatch"); | |
3720 | wpa_hexdump(MSG_DEBUG, "FILS: Received Key-Auth", | |
3721 | elems.fils_key_confirm, | |
3722 | elems.fils_key_confirm_len); | |
3723 | wpa_hexdump(MSG_DEBUG, "FILS: Expected Key-Auth", | |
3724 | sm->fils_key_auth_ap, sm->fils_key_auth_len); | |
3725 | goto fail; | |
3726 | } | |
3727 | ||
3728 | /* Key Delivery */ | |
3729 | if (!elems.key_delivery) { | |
3730 | wpa_printf(MSG_DEBUG, "FILS: No Key Delivery element"); | |
3731 | goto fail; | |
3732 | } | |
3733 | ||
3734 | /* Parse GTK and set the key to the driver */ | |
3735 | os_memset(&gd, 0, sizeof(gd)); | |
3736 | if (wpa_supplicant_parse_ies(elems.key_delivery + WPA_KEY_RSC_LEN, | |
3737 | elems.key_delivery_len - WPA_KEY_RSC_LEN, | |
3738 | &kde) < 0) { | |
3739 | wpa_printf(MSG_DEBUG, "FILS: Failed to parse KDEs"); | |
3740 | goto fail; | |
3741 | } | |
3742 | if (!kde.gtk) { | |
3743 | wpa_printf(MSG_DEBUG, "FILS: No GTK KDE"); | |
3744 | goto fail; | |
3745 | } | |
3746 | maxkeylen = gd.gtk_len = kde.gtk_len - 2; | |
3747 | if (wpa_supplicant_check_group_cipher(sm, sm->group_cipher, | |
3748 | gd.gtk_len, maxkeylen, | |
3749 | &gd.key_rsc_len, &gd.alg)) | |
3750 | goto fail; | |
3751 | ||
3752 | wpa_hexdump_key(MSG_DEBUG, "FILS: Received GTK", kde.gtk, kde.gtk_len); | |
3753 | gd.keyidx = kde.gtk[0] & 0x3; | |
3754 | gd.tx = wpa_supplicant_gtk_tx_bit_workaround(sm, | |
3755 | !!(kde.gtk[0] & BIT(2))); | |
3756 | if (kde.gtk_len - 2 > sizeof(gd.gtk)) { | |
3757 | wpa_printf(MSG_DEBUG, "FILS: Too long GTK in GTK KDE (len=%lu)", | |
3758 | (unsigned long) kde.gtk_len - 2); | |
3759 | goto fail; | |
3760 | } | |
3761 | os_memcpy(gd.gtk, kde.gtk + 2, kde.gtk_len - 2); | |
3762 | ||
3763 | wpa_printf(MSG_DEBUG, "FILS: Set GTK to driver"); | |
3764 | if (wpa_supplicant_install_gtk(sm, &gd, elems.key_delivery) < 0) { | |
3765 | wpa_printf(MSG_DEBUG, "FILS: Failed to set GTK"); | |
3766 | goto fail; | |
3767 | } | |
3768 | ||
3769 | if (ieee80211w_set_keys(sm, &kde) < 0) { | |
3770 | wpa_printf(MSG_DEBUG, "FILS: Failed to set IGTK"); | |
3771 | goto fail; | |
3772 | } | |
3773 | ||
3774 | alg = wpa_cipher_to_alg(sm->pairwise_cipher); | |
3775 | keylen = wpa_cipher_key_len(sm->pairwise_cipher); | |
3776 | rsclen = wpa_cipher_rsc_len(sm->pairwise_cipher); | |
3777 | wpa_hexdump_key(MSG_DEBUG, "FILS: Set TK to driver", | |
3778 | sm->ptk.tk, keylen); | |
3779 | if (wpa_sm_set_key(sm, alg, sm->bssid, 0, 1, null_rsc, rsclen, | |
3780 | sm->ptk.tk, keylen) < 0) { | |
3781 | wpa_msg(sm->ctx->msg_ctx, MSG_WARNING, | |
3782 | "FILS: Failed to set PTK to the driver (alg=%d keylen=%d bssid=" | |
3783 | MACSTR ")", | |
3784 | alg, keylen, MAC2STR(sm->bssid)); | |
3785 | goto fail; | |
3786 | } | |
3787 | ||
3788 | /* TODO: TK could be cleared after auth frame exchange now that driver | |
3789 | * takes care of association frame encryption/decryption. */ | |
3790 | /* TK is not needed anymore in supplicant */ | |
3791 | os_memset(sm->ptk.tk, 0, WPA_TK_MAX_LEN); | |
3792 | ||
124ddfa1 JM |
3793 | /* FILS HLP Container */ |
3794 | fils_process_hlp_container(sm, ie_start, end - ie_start); | |
706df429 JM |
3795 | |
3796 | /* TODO: FILS IP Address Assignment */ | |
3797 | ||
3798 | wpa_printf(MSG_DEBUG, "FILS: Auth+Assoc completed successfully"); | |
3799 | sm->fils_completed = 1; | |
3800 | ||
3801 | return 0; | |
3802 | fail: | |
3803 | return -1; | |
3804 | } | |
3805 | ||
3806 | #endif /* CONFIG_FILS */ | |
3807 | ||
3808 | ||
3809 | int wpa_fils_is_completed(struct wpa_sm *sm) | |
3810 | { | |
3811 | #ifdef CONFIG_FILS | |
3812 | return sm && sm->fils_completed; | |
3813 | #else /* CONFIG_FILS */ | |
3814 | return 0; | |
f00b9b88 | 3815 | #endif /* CONFIG_FILS */ |
706df429 | 3816 | } |