1 /*
2 * hostapd / EAP-PEAP (draft-josefsson-pppext-eap-tls-eap-10.txt)
3 * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10
11 #include "common.h"
12 #include "crypto/sha1.h"
13 #include "crypto/tls.h"
14 #include "crypto/random.h"
15 #include "eap_i.h"
16 #include "eap_tls_common.h"
17 #include "eap_common/eap_tlv_common.h"
18 #include "eap_common/eap_peap_common.h"
19 #include "tncs.h"
20
21
22 /* Maximum supported PEAP version
23 * 0 = Microsoft's PEAP version 0; draft-kamath-pppext-peapv0-00.txt
24 * 1 = draft-josefsson-ppext-eap-tls-eap-05.txt
25 */
26 #define EAP_PEAP_VERSION 1
27
28
29 static void eap_peap_reset(struct eap_sm *sm, void *priv);
30
31
32 struct eap_peap_data {
33 struct eap_ssl_data ssl;
34 enum {
35 START, PHASE1, PHASE1_ID2, PHASE2_START, PHASE2_ID,
36 PHASE2_METHOD, PHASE2_SOH,
37 PHASE2_TLV, SUCCESS_REQ, FAILURE_REQ, SUCCESS, FAILURE
38 } state;
39
40 int peap_version;
41 int recv_version;
42 const struct eap_method *phase2_method;
43 void *phase2_priv;
44 int force_version;
45 struct wpabuf *pending_phase2_resp;
46 enum { TLV_REQ_NONE, TLV_REQ_SUCCESS, TLV_REQ_FAILURE } tlv_request;
47 int crypto_binding_sent;
48 int crypto_binding_used;
49 enum { NO_BINDING, OPTIONAL_BINDING, REQUIRE_BINDING } crypto_binding;
50 u8 binding_nonce[32];
51 u8 ipmk[40];
52 u8 cmk[20];
53 u8 *phase2_key;
54 size_t phase2_key_len;
55 struct wpabuf *soh_response;
56 };
57
58
eap_peap_state_txt(int state)59 static const char * eap_peap_state_txt(int state)
60 {
61 switch (state) {
62 case START:
63 return "START";
64 case PHASE1:
65 return "PHASE1";
66 case PHASE1_ID2:
67 return "PHASE1_ID2";
68 case PHASE2_START:
69 return "PHASE2_START";
70 case PHASE2_ID:
71 return "PHASE2_ID";
72 case PHASE2_METHOD:
73 return "PHASE2_METHOD";
74 case PHASE2_SOH:
75 return "PHASE2_SOH";
76 case PHASE2_TLV:
77 return "PHASE2_TLV";
78 case SUCCESS_REQ:
79 return "SUCCESS_REQ";
80 case FAILURE_REQ:
81 return "FAILURE_REQ";
82 case SUCCESS:
83 return "SUCCESS";
84 case FAILURE:
85 return "FAILURE";
86 default:
87 return "Unknown?!";
88 }
89 }
90
91
eap_peap_state(struct eap_peap_data * data,int state)92 static void eap_peap_state(struct eap_peap_data *data, int state)
93 {
94 wpa_printf(MSG_DEBUG, "EAP-PEAP: %s -> %s",
95 eap_peap_state_txt(data->state),
96 eap_peap_state_txt(state));
97 data->state = state;
98 }
99
100
eap_peap_req_success(struct eap_sm * sm,struct eap_peap_data * data)101 static void eap_peap_req_success(struct eap_sm *sm,
102 struct eap_peap_data *data)
103 {
104 if (data->state == FAILURE || data->state == FAILURE_REQ) {
105 eap_peap_state(data, FAILURE);
106 return;
107 }
108
109 if (data->peap_version == 0) {
110 data->tlv_request = TLV_REQ_SUCCESS;
111 eap_peap_state(data, PHASE2_TLV);
112 } else {
113 eap_peap_state(data, SUCCESS_REQ);
114 }
115 }
116
117
eap_peap_req_failure(struct eap_sm * sm,struct eap_peap_data * data)118 static void eap_peap_req_failure(struct eap_sm *sm,
119 struct eap_peap_data *data)
120 {
121 if (data->state == FAILURE || data->state == FAILURE_REQ ||
122 data->state == SUCCESS_REQ || data->tlv_request != TLV_REQ_NONE) {
123 eap_peap_state(data, FAILURE);
124 return;
125 }
126
127 if (data->peap_version == 0) {
128 data->tlv_request = TLV_REQ_FAILURE;
129 eap_peap_state(data, PHASE2_TLV);
130 } else {
131 eap_peap_state(data, FAILURE_REQ);
132 }
133 }
134
135
eap_peap_init(struct eap_sm * sm)136 static void * eap_peap_init(struct eap_sm *sm)
137 {
138 struct eap_peap_data *data;
139
140 data = os_zalloc(sizeof(*data));
141 if (data == NULL)
142 return NULL;
143 data->peap_version = EAP_PEAP_VERSION;
144 data->force_version = -1;
145 if (sm->user && sm->user->force_version >= 0) {
146 data->force_version = sm->user->force_version;
147 wpa_printf(MSG_DEBUG, "EAP-PEAP: forcing version %d",
148 data->force_version);
149 data->peap_version = data->force_version;
150 }
151 data->state = START;
152 data->crypto_binding = OPTIONAL_BINDING;
153
154 if (eap_server_tls_ssl_init(sm, &data->ssl, 0)) {
155 wpa_printf(MSG_INFO, "EAP-PEAP: Failed to initialize SSL.");
156 eap_peap_reset(sm, data);
157 return NULL;
158 }
159
160 return data;
161 }
162
163
eap_peap_reset(struct eap_sm * sm,void * priv)164 static void eap_peap_reset(struct eap_sm *sm, void *priv)
165 {
166 struct eap_peap_data *data = priv;
167 if (data == NULL)
168 return;
169 if (data->phase2_priv && data->phase2_method)
170 data->phase2_method->reset(sm, data->phase2_priv);
171 eap_server_tls_ssl_deinit(sm, &data->ssl);
172 wpabuf_free(data->pending_phase2_resp);
173 os_free(data->phase2_key);
174 wpabuf_free(data->soh_response);
175 bin_clear_free(data, sizeof(*data));
176 }
177
178
eap_peap_build_start(struct eap_sm * sm,struct eap_peap_data * data,u8 id)179 static struct wpabuf * eap_peap_build_start(struct eap_sm *sm,
180 struct eap_peap_data *data, u8 id)
181 {
182 struct wpabuf *req;
183
184 req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PEAP, 1,
185 EAP_CODE_REQUEST, id);
186 if (req == NULL) {
187 wpa_printf(MSG_ERROR, "EAP-PEAP: Failed to allocate memory for"
188 " request");
189 eap_peap_state(data, FAILURE);
190 return NULL;
191 }
192
193 wpabuf_put_u8(req, EAP_TLS_FLAGS_START | data->peap_version);
194
195 eap_peap_state(data, PHASE1);
196
197 return req;
198 }
199
200
eap_peap_build_phase2_req(struct eap_sm * sm,struct eap_peap_data * data,u8 id)201 static struct wpabuf * eap_peap_build_phase2_req(struct eap_sm *sm,
202 struct eap_peap_data *data,
203 u8 id)
204 {
205 struct wpabuf *buf, *encr_req, msgbuf;
206 const u8 *req;
207 size_t req_len;
208
209 if (data->phase2_method == NULL || data->phase2_priv == NULL) {
210 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 method not ready");
211 return NULL;
212 }
213 buf = data->phase2_method->buildReq(sm, data->phase2_priv, id);
214 if (buf == NULL)
215 return NULL;
216
217 req = wpabuf_head(buf);
218 req_len = wpabuf_len(buf);
219 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: Encrypting Phase 2 data",
220 req, req_len);
221
222 if (data->peap_version == 0 &&
223 data->phase2_method->method != EAP_TYPE_TLV) {
224 req += sizeof(struct eap_hdr);
225 req_len -= sizeof(struct eap_hdr);
226 }
227
228 wpabuf_set(&msgbuf, req, req_len);
229 encr_req = eap_server_tls_encrypt(sm, &data->ssl, &msgbuf);
230 wpabuf_free(buf);
231
232 return encr_req;
233 }
234
235
236 #ifdef EAP_SERVER_TNC
eap_peap_build_phase2_soh(struct eap_sm * sm,struct eap_peap_data * data,u8 id)237 static struct wpabuf * eap_peap_build_phase2_soh(struct eap_sm *sm,
238 struct eap_peap_data *data,
239 u8 id)
240 {
241 struct wpabuf *buf1, *buf, *encr_req, msgbuf;
242 const u8 *req;
243 size_t req_len;
244
245 buf1 = tncs_build_soh_request();
246 if (buf1 == NULL)
247 return NULL;
248
249 buf = eap_msg_alloc(EAP_VENDOR_MICROSOFT, 0x21, wpabuf_len(buf1),
250 EAP_CODE_REQUEST, id);
251 if (buf == NULL) {
252 wpabuf_free(buf1);
253 return NULL;
254 }
255 wpabuf_put_buf(buf, buf1);
256 wpabuf_free(buf1);
257
258 req = wpabuf_head(buf);
259 req_len = wpabuf_len(buf);
260
261 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: Encrypting Phase 2 SOH data",
262 req, req_len);
263
264 req += sizeof(struct eap_hdr);
265 req_len -= sizeof(struct eap_hdr);
266 wpabuf_set(&msgbuf, req, req_len);
267
268 encr_req = eap_server_tls_encrypt(sm, &data->ssl, &msgbuf);
269 wpabuf_free(buf);
270
271 return encr_req;
272 }
273 #endif /* EAP_SERVER_TNC */
274
275
eap_peap_get_isk(struct eap_peap_data * data,u8 * isk,size_t isk_len)276 static void eap_peap_get_isk(struct eap_peap_data *data,
277 u8 *isk, size_t isk_len)
278 {
279 size_t key_len;
280
281 os_memset(isk, 0, isk_len);
282 if (data->phase2_key == NULL)
283 return;
284
285 key_len = data->phase2_key_len;
286 if (key_len > isk_len)
287 key_len = isk_len;
288 os_memcpy(isk, data->phase2_key, key_len);
289 }
290
291
eap_peap_derive_cmk(struct eap_sm * sm,struct eap_peap_data * data)292 static int eap_peap_derive_cmk(struct eap_sm *sm, struct eap_peap_data *data)
293 {
294 u8 *tk;
295 u8 isk[32], imck[60];
296
297 /*
298 * Tunnel key (TK) is the first 60 octets of the key generated by
299 * phase 1 of PEAP (based on TLS).
300 */
301 tk = eap_server_tls_derive_key(sm, &data->ssl, "client EAP encryption",
302 EAP_TLS_KEY_LEN);
303 if (tk == NULL)
304 return -1;
305 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: TK", tk, 60);
306
307 eap_peap_get_isk(data, isk, sizeof(isk));
308 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: ISK", isk, sizeof(isk));
309
310 /*
311 * IPMK Seed = "Inner Methods Compound Keys" | ISK
312 * TempKey = First 40 octets of TK
313 * IPMK|CMK = PRF+(TempKey, IPMK Seed, 60)
314 * (note: draft-josefsson-pppext-eap-tls-eap-10.txt includes a space
315 * in the end of the label just before ISK; is that just a typo?)
316 */
317 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: TempKey", tk, 40);
318 if (peap_prfplus(data->peap_version, tk, 40,
319 "Inner Methods Compound Keys",
320 isk, sizeof(isk), imck, sizeof(imck)) < 0) {
321 os_free(tk);
322 return -1;
323 }
324 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IMCK (IPMKj)",
325 imck, sizeof(imck));
326
327 os_free(tk);
328
329 /* TODO: fast-connect: IPMK|CMK = TK */
330 os_memcpy(data->ipmk, imck, 40);
331 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: IPMK (S-IPMKj)", data->ipmk, 40);
332 os_memcpy(data->cmk, imck + 40, 20);
333 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CMK (CMKj)", data->cmk, 20);
334
335 return 0;
336 }
337
338
eap_peap_build_phase2_tlv(struct eap_sm * sm,struct eap_peap_data * data,u8 id)339 static struct wpabuf * eap_peap_build_phase2_tlv(struct eap_sm *sm,
340 struct eap_peap_data *data,
341 u8 id)
342 {
343 struct wpabuf *buf, *encr_req;
344 size_t mlen;
345
346 mlen = 6; /* Result TLV */
347 if (data->crypto_binding != NO_BINDING)
348 mlen += 60; /* Cryptobinding TLV */
349 #ifdef EAP_SERVER_TNC
350 if (data->soh_response)
351 mlen += wpabuf_len(data->soh_response);
352 #endif /* EAP_SERVER_TNC */
353
354 buf = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_TLV, mlen,
355 EAP_CODE_REQUEST, id);
356 if (buf == NULL)
357 return NULL;
358
359 wpabuf_put_u8(buf, 0x80); /* Mandatory */
360 wpabuf_put_u8(buf, EAP_TLV_RESULT_TLV);
361 /* Length */
362 wpabuf_put_be16(buf, 2);
363 /* Status */
364 wpabuf_put_be16(buf, data->tlv_request == TLV_REQ_SUCCESS ?
365 EAP_TLV_RESULT_SUCCESS : EAP_TLV_RESULT_FAILURE);
366
367 if (data->peap_version == 0 && data->tlv_request == TLV_REQ_SUCCESS &&
368 data->crypto_binding != NO_BINDING) {
369 u8 *mac;
370 u8 eap_type = EAP_TYPE_PEAP;
371 const u8 *addr[2];
372 size_t len[2];
373 u16 tlv_type;
374
375 #ifdef EAP_SERVER_TNC
376 if (data->soh_response) {
377 wpa_printf(MSG_DEBUG, "EAP-PEAP: Adding MS-SOH "
378 "Response TLV");
379 wpabuf_put_buf(buf, data->soh_response);
380 wpabuf_free(data->soh_response);
381 data->soh_response = NULL;
382 }
383 #endif /* EAP_SERVER_TNC */
384
385 if (eap_peap_derive_cmk(sm, data) < 0 ||
386 random_get_bytes(data->binding_nonce, 32)) {
387 wpabuf_free(buf);
388 return NULL;
389 }
390
391 /* Compound_MAC: HMAC-SHA1-160(cryptobinding TLV | EAP type) */
392 addr[0] = wpabuf_put(buf, 0);
393 len[0] = 60;
394 addr[1] = &eap_type;
395 len[1] = 1;
396
397 tlv_type = EAP_TLV_CRYPTO_BINDING_TLV;
398 wpabuf_put_be16(buf, tlv_type);
399 wpabuf_put_be16(buf, 56);
400
401 wpabuf_put_u8(buf, 0); /* Reserved */
402 wpabuf_put_u8(buf, data->peap_version); /* Version */
403 wpabuf_put_u8(buf, data->recv_version); /* RecvVersion */
404 wpabuf_put_u8(buf, 0); /* SubType: 0 = Request, 1 = Response */
405 wpabuf_put_data(buf, data->binding_nonce, 32); /* Nonce */
406 mac = wpabuf_put(buf, 20); /* Compound_MAC */
407 wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC CMK",
408 data->cmk, 20);
409 wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC data 1",
410 addr[0], len[0]);
411 wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC data 2",
412 addr[1], len[1]);
413 hmac_sha1_vector(data->cmk, 20, 2, addr, len, mac);
414 wpa_hexdump(MSG_MSGDUMP, "EAP-PEAP: Compound_MAC",
415 mac, SHA1_MAC_LEN);
416 data->crypto_binding_sent = 1;
417 }
418
419 wpa_hexdump_buf_key(MSG_DEBUG, "EAP-PEAP: Encrypting Phase 2 TLV data",
420 buf);
421
422 encr_req = eap_server_tls_encrypt(sm, &data->ssl, buf);
423 wpabuf_free(buf);
424
425 return encr_req;
426 }
427
428
eap_peap_build_phase2_term(struct eap_sm * sm,struct eap_peap_data * data,u8 id,int success)429 static struct wpabuf * eap_peap_build_phase2_term(struct eap_sm *sm,
430 struct eap_peap_data *data,
431 u8 id, int success)
432 {
433 struct wpabuf *encr_req, msgbuf;
434 size_t req_len;
435 struct eap_hdr *hdr;
436
437 req_len = sizeof(*hdr);
438 hdr = os_zalloc(req_len);
439 if (hdr == NULL)
440 return NULL;
441
442 hdr->code = success ? EAP_CODE_SUCCESS : EAP_CODE_FAILURE;
443 hdr->identifier = id;
444 hdr->length = host_to_be16(req_len);
445
446 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: Encrypting Phase 2 data",
447 (u8 *) hdr, req_len);
448
449 wpabuf_set(&msgbuf, hdr, req_len);
450 encr_req = eap_server_tls_encrypt(sm, &data->ssl, &msgbuf);
451 os_free(hdr);
452
453 return encr_req;
454 }
455
456
eap_peap_buildReq(struct eap_sm * sm,void * priv,u8 id)457 static struct wpabuf * eap_peap_buildReq(struct eap_sm *sm, void *priv, u8 id)
458 {
459 struct eap_peap_data *data = priv;
460
461 if (data->ssl.state == FRAG_ACK) {
462 return eap_server_tls_build_ack(id, EAP_TYPE_PEAP,
463 data->peap_version);
464 }
465
466 if (data->ssl.state == WAIT_FRAG_ACK) {
467 return eap_server_tls_build_msg(&data->ssl, EAP_TYPE_PEAP,
468 data->peap_version, id);
469 }
470
471 switch (data->state) {
472 case START:
473 return eap_peap_build_start(sm, data, id);
474 case PHASE1:
475 case PHASE1_ID2:
476 if (tls_connection_established(sm->ssl_ctx, data->ssl.conn)) {
477 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase1 done, "
478 "starting Phase2");
479 eap_peap_state(data, PHASE2_START);
480 }
481 break;
482 case PHASE2_ID:
483 case PHASE2_METHOD:
484 wpabuf_free(data->ssl.tls_out);
485 data->ssl.tls_out_pos = 0;
486 data->ssl.tls_out = eap_peap_build_phase2_req(sm, data, id);
487 break;
488 #ifdef EAP_SERVER_TNC
489 case PHASE2_SOH:
490 wpabuf_free(data->ssl.tls_out);
491 data->ssl.tls_out_pos = 0;
492 data->ssl.tls_out = eap_peap_build_phase2_soh(sm, data, id);
493 break;
494 #endif /* EAP_SERVER_TNC */
495 case PHASE2_TLV:
496 wpabuf_free(data->ssl.tls_out);
497 data->ssl.tls_out_pos = 0;
498 data->ssl.tls_out = eap_peap_build_phase2_tlv(sm, data, id);
499 break;
500 case SUCCESS_REQ:
501 wpabuf_free(data->ssl.tls_out);
502 data->ssl.tls_out_pos = 0;
503 data->ssl.tls_out = eap_peap_build_phase2_term(sm, data, id,
504 1);
505 break;
506 case FAILURE_REQ:
507 wpabuf_free(data->ssl.tls_out);
508 data->ssl.tls_out_pos = 0;
509 data->ssl.tls_out = eap_peap_build_phase2_term(sm, data, id,
510 0);
511 break;
512 default:
513 wpa_printf(MSG_DEBUG, "EAP-PEAP: %s - unexpected state %d",
514 __func__, data->state);
515 return NULL;
516 }
517
518 return eap_server_tls_build_msg(&data->ssl, EAP_TYPE_PEAP,
519 data->peap_version, id);
520 }
521
522
eap_peap_check(struct eap_sm * sm,void * priv,struct wpabuf * respData)523 static Boolean eap_peap_check(struct eap_sm *sm, void *priv,
524 struct wpabuf *respData)
525 {
526 const u8 *pos;
527 size_t len;
528
529 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_PEAP, respData, &len);
530 if (pos == NULL || len < 1) {
531 wpa_printf(MSG_INFO, "EAP-PEAP: Invalid frame");
532 return TRUE;
533 }
534
535 return FALSE;
536 }
537
538
eap_peap_phase2_init(struct eap_sm * sm,struct eap_peap_data * data,EapType eap_type)539 static int eap_peap_phase2_init(struct eap_sm *sm, struct eap_peap_data *data,
540 EapType eap_type)
541 {
542 if (data->phase2_priv && data->phase2_method) {
543 data->phase2_method->reset(sm, data->phase2_priv);
544 data->phase2_method = NULL;
545 data->phase2_priv = NULL;
546 }
547 data->phase2_method = eap_server_get_eap_method(EAP_VENDOR_IETF,
548 eap_type);
549 if (!data->phase2_method)
550 return -1;
551
552 sm->init_phase2 = 1;
553 data->phase2_priv = data->phase2_method->init(sm);
554 sm->init_phase2 = 0;
555 return 0;
556 }
557
558
eap_tlv_validate_cryptobinding(struct eap_sm * sm,struct eap_peap_data * data,const u8 * crypto_tlv,size_t crypto_tlv_len)559 static int eap_tlv_validate_cryptobinding(struct eap_sm *sm,
560 struct eap_peap_data *data,
561 const u8 *crypto_tlv,
562 size_t crypto_tlv_len)
563 {
564 u8 buf[61], mac[SHA1_MAC_LEN];
565 const u8 *pos;
566
567 if (crypto_tlv_len != 4 + 56) {
568 wpa_printf(MSG_DEBUG, "EAP-PEAP: Invalid cryptobinding TLV "
569 "length %d", (int) crypto_tlv_len);
570 return -1;
571 }
572
573 pos = crypto_tlv;
574 pos += 4; /* TLV header */
575 if (pos[1] != data->peap_version) {
576 wpa_printf(MSG_DEBUG, "EAP-PEAP: Cryptobinding TLV Version "
577 "mismatch (was %d; expected %d)",
578 pos[1], data->peap_version);
579 return -1;
580 }
581
582 if (pos[3] != 1) {
583 wpa_printf(MSG_DEBUG, "EAP-PEAP: Unexpected Cryptobinding TLV "
584 "SubType %d", pos[3]);
585 return -1;
586 }
587 pos += 4;
588 pos += 32; /* Nonce */
589
590 /* Compound_MAC: HMAC-SHA1-160(cryptobinding TLV | EAP type) */
591 os_memcpy(buf, crypto_tlv, 60);
592 os_memset(buf + 4 + 4 + 32, 0, 20); /* Compound_MAC */
593 buf[60] = EAP_TYPE_PEAP;
594 hmac_sha1(data->cmk, 20, buf, sizeof(buf), mac);
595
596 if (os_memcmp_const(mac, pos, SHA1_MAC_LEN) != 0) {
597 wpa_printf(MSG_DEBUG, "EAP-PEAP: Invalid Compound_MAC in "
598 "cryptobinding TLV");
599 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CMK", data->cmk, 20);
600 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Cryptobinding seed data",
601 buf, 61);
602 return -1;
603 }
604
605 wpa_printf(MSG_DEBUG, "EAP-PEAP: Valid cryptobinding TLV received");
606
607 return 0;
608 }
609
610
eap_peap_process_phase2_tlv(struct eap_sm * sm,struct eap_peap_data * data,struct wpabuf * in_data)611 static void eap_peap_process_phase2_tlv(struct eap_sm *sm,
612 struct eap_peap_data *data,
613 struct wpabuf *in_data)
614 {
615 const u8 *pos;
616 size_t left;
617 const u8 *result_tlv = NULL, *crypto_tlv = NULL;
618 size_t result_tlv_len = 0, crypto_tlv_len = 0;
619 int tlv_type, mandatory, tlv_len;
620
621 pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_TLV, in_data, &left);
622 if (pos == NULL) {
623 wpa_printf(MSG_DEBUG, "EAP-PEAP: Invalid EAP-TLV header");
624 return;
625 }
626
627 /* Parse TLVs */
628 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Received TLVs", pos, left);
629 while (left >= 4) {
630 mandatory = !!(pos[0] & 0x80);
631 tlv_type = pos[0] & 0x3f;
632 tlv_type = (tlv_type << 8) | pos[1];
633 tlv_len = ((int) pos[2] << 8) | pos[3];
634 pos += 4;
635 left -= 4;
636 if ((size_t) tlv_len > left) {
637 wpa_printf(MSG_DEBUG, "EAP-PEAP: TLV underrun "
638 "(tlv_len=%d left=%lu)", tlv_len,
639 (unsigned long) left);
640 eap_peap_state(data, FAILURE);
641 return;
642 }
643 switch (tlv_type) {
644 case EAP_TLV_RESULT_TLV:
645 result_tlv = pos;
646 result_tlv_len = tlv_len;
647 break;
648 case EAP_TLV_CRYPTO_BINDING_TLV:
649 crypto_tlv = pos;
650 crypto_tlv_len = tlv_len;
651 break;
652 default:
653 wpa_printf(MSG_DEBUG, "EAP-PEAP: Unsupported TLV Type "
654 "%d%s", tlv_type,
655 mandatory ? " (mandatory)" : "");
656 if (mandatory) {
657 eap_peap_state(data, FAILURE);
658 return;
659 }
660 /* Ignore this TLV, but process other TLVs */
661 break;
662 }
663
664 pos += tlv_len;
665 left -= tlv_len;
666 }
667 if (left) {
668 wpa_printf(MSG_DEBUG, "EAP-PEAP: Last TLV too short in "
669 "Request (left=%lu)", (unsigned long) left);
670 eap_peap_state(data, FAILURE);
671 return;
672 }
673
674 /* Process supported TLVs */
675 if (crypto_tlv && data->crypto_binding_sent) {
676 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Cryptobinding TLV",
677 crypto_tlv, crypto_tlv_len);
678 if (eap_tlv_validate_cryptobinding(sm, data, crypto_tlv - 4,
679 crypto_tlv_len + 4) < 0) {
680 eap_peap_state(data, FAILURE);
681 return;
682 }
683 data->crypto_binding_used = 1;
684 } else if (!crypto_tlv && data->crypto_binding_sent &&
685 data->crypto_binding == REQUIRE_BINDING) {
686 wpa_printf(MSG_DEBUG, "EAP-PEAP: No cryptobinding TLV");
687 eap_peap_state(data, FAILURE);
688 return;
689 }
690
691 if (result_tlv) {
692 int status;
693 const char *requested;
694
695 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Result TLV",
696 result_tlv, result_tlv_len);
697 if (result_tlv_len < 2) {
698 wpa_printf(MSG_INFO, "EAP-PEAP: Too short Result TLV "
699 "(len=%lu)",
700 (unsigned long) result_tlv_len);
701 eap_peap_state(data, FAILURE);
702 return;
703 }
704 requested = data->tlv_request == TLV_REQ_SUCCESS ? "Success" :
705 "Failure";
706 status = WPA_GET_BE16(result_tlv);
707 if (status == EAP_TLV_RESULT_SUCCESS) {
708 wpa_printf(MSG_INFO, "EAP-PEAP: TLV Result - Success "
709 "- requested %s", requested);
710 if (data->tlv_request == TLV_REQ_SUCCESS)
711 eap_peap_state(data, SUCCESS);
712 else
713 eap_peap_state(data, FAILURE);
714
715 } else if (status == EAP_TLV_RESULT_FAILURE) {
716 wpa_printf(MSG_INFO, "EAP-PEAP: TLV Result - Failure "
717 "- requested %s", requested);
718 eap_peap_state(data, FAILURE);
719 } else {
720 wpa_printf(MSG_INFO, "EAP-PEAP: Unknown TLV Result "
721 "Status %d", status);
722 eap_peap_state(data, FAILURE);
723 }
724 }
725 }
726
727
728 #ifdef EAP_SERVER_TNC
eap_peap_process_phase2_soh(struct eap_sm * sm,struct eap_peap_data * data,struct wpabuf * in_data)729 static void eap_peap_process_phase2_soh(struct eap_sm *sm,
730 struct eap_peap_data *data,
731 struct wpabuf *in_data)
732 {
733 const u8 *pos, *vpos;
734 size_t left;
735 const u8 *soh_tlv = NULL;
736 size_t soh_tlv_len = 0;
737 int tlv_type, mandatory, tlv_len, vtlv_len;
738 u8 next_type;
739 u32 vendor_id;
740
741 pos = eap_hdr_validate(EAP_VENDOR_MICROSOFT, 0x21, in_data, &left);
742 if (pos == NULL) {
743 wpa_printf(MSG_DEBUG, "EAP-PEAP: Not a valid SoH EAP "
744 "Extensions Method header - skip TNC");
745 goto auth_method;
746 }
747
748 /* Parse TLVs */
749 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Received TLVs (SoH)", pos, left);
750 while (left >= 4) {
751 mandatory = !!(pos[0] & 0x80);
752 tlv_type = pos[0] & 0x3f;
753 tlv_type = (tlv_type << 8) | pos[1];
754 tlv_len = ((int) pos[2] << 8) | pos[3];
755 pos += 4;
756 left -= 4;
757 if ((size_t) tlv_len > left) {
758 wpa_printf(MSG_DEBUG, "EAP-PEAP: TLV underrun "
759 "(tlv_len=%d left=%lu)", tlv_len,
760 (unsigned long) left);
761 eap_peap_state(data, FAILURE);
762 return;
763 }
764 switch (tlv_type) {
765 case EAP_TLV_VENDOR_SPECIFIC_TLV:
766 if (tlv_len < 4) {
767 wpa_printf(MSG_DEBUG, "EAP-PEAP: Too short "
768 "vendor specific TLV (len=%d)",
769 (int) tlv_len);
770 eap_peap_state(data, FAILURE);
771 return;
772 }
773
774 vendor_id = WPA_GET_BE32(pos);
775 if (vendor_id != EAP_VENDOR_MICROSOFT) {
776 if (mandatory) {
777 eap_peap_state(data, FAILURE);
778 return;
779 }
780 break;
781 }
782
783 vpos = pos + 4;
784 mandatory = !!(vpos[0] & 0x80);
785 tlv_type = vpos[0] & 0x3f;
786 tlv_type = (tlv_type << 8) | vpos[1];
787 vtlv_len = ((int) vpos[2] << 8) | vpos[3];
788 vpos += 4;
789 if (vpos + vtlv_len > pos + left) {
790 wpa_printf(MSG_DEBUG, "EAP-PEAP: Vendor TLV "
791 "underrun");
792 eap_peap_state(data, FAILURE);
793 return;
794 }
795
796 if (tlv_type == 1) {
797 soh_tlv = vpos;
798 soh_tlv_len = vtlv_len;
799 break;
800 }
801
802 wpa_printf(MSG_DEBUG, "EAP-PEAP: Unsupported MS-TLV "
803 "Type %d%s", tlv_type,
804 mandatory ? " (mandatory)" : "");
805 if (mandatory) {
806 eap_peap_state(data, FAILURE);
807 return;
808 }
809 /* Ignore this TLV, but process other TLVs */
810 break;
811 default:
812 wpa_printf(MSG_DEBUG, "EAP-PEAP: Unsupported TLV Type "
813 "%d%s", tlv_type,
814 mandatory ? " (mandatory)" : "");
815 if (mandatory) {
816 eap_peap_state(data, FAILURE);
817 return;
818 }
819 /* Ignore this TLV, but process other TLVs */
820 break;
821 }
822
823 pos += tlv_len;
824 left -= tlv_len;
825 }
826 if (left) {
827 wpa_printf(MSG_DEBUG, "EAP-PEAP: Last TLV too short in "
828 "Request (left=%lu)", (unsigned long) left);
829 eap_peap_state(data, FAILURE);
830 return;
831 }
832
833 /* Process supported TLVs */
834 if (soh_tlv) {
835 int failure = 0;
836 wpabuf_free(data->soh_response);
837 data->soh_response = tncs_process_soh(soh_tlv, soh_tlv_len,
838 &failure);
839 if (failure) {
840 eap_peap_state(data, FAILURE);
841 return;
842 }
843 } else {
844 wpa_printf(MSG_DEBUG, "EAP-PEAP: No SoH TLV received");
845 eap_peap_state(data, FAILURE);
846 return;
847 }
848
849 auth_method:
850 eap_peap_state(data, PHASE2_METHOD);
851 next_type = sm->user->methods[0].method;
852 sm->user_eap_method_index = 1;
853 wpa_printf(MSG_DEBUG, "EAP-PEAP: try EAP type %d", next_type);
854 eap_peap_phase2_init(sm, data, next_type);
855 }
856 #endif /* EAP_SERVER_TNC */
857
858
eap_peap_process_phase2_response(struct eap_sm * sm,struct eap_peap_data * data,struct wpabuf * in_data)859 static void eap_peap_process_phase2_response(struct eap_sm *sm,
860 struct eap_peap_data *data,
861 struct wpabuf *in_data)
862 {
863 u8 next_type = EAP_TYPE_NONE;
864 const struct eap_hdr *hdr;
865 const u8 *pos;
866 size_t left;
867
868 if (data->state == PHASE2_TLV) {
869 eap_peap_process_phase2_tlv(sm, data, in_data);
870 return;
871 }
872
873 #ifdef EAP_SERVER_TNC
874 if (data->state == PHASE2_SOH) {
875 eap_peap_process_phase2_soh(sm, data, in_data);
876 return;
877 }
878 #endif /* EAP_SERVER_TNC */
879
880 if (data->phase2_priv == NULL) {
881 wpa_printf(MSG_DEBUG, "EAP-PEAP: %s - Phase2 not "
882 "initialized?!", __func__);
883 return;
884 }
885
886 hdr = wpabuf_head(in_data);
887 pos = (const u8 *) (hdr + 1);
888
889 if (wpabuf_len(in_data) > sizeof(*hdr) && *pos == EAP_TYPE_NAK) {
890 left = wpabuf_len(in_data) - sizeof(*hdr);
891 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Phase2 type Nak'ed; "
892 "allowed types", pos + 1, left - 1);
893 eap_sm_process_nak(sm, pos + 1, left - 1);
894 if (sm->user && sm->user_eap_method_index < EAP_MAX_METHODS &&
895 sm->user->methods[sm->user_eap_method_index].method !=
896 EAP_TYPE_NONE) {
897 next_type = sm->user->methods[
898 sm->user_eap_method_index++].method;
899 wpa_printf(MSG_DEBUG, "EAP-PEAP: try EAP type %d",
900 next_type);
901 } else {
902 eap_peap_req_failure(sm, data);
903 next_type = EAP_TYPE_NONE;
904 }
905 eap_peap_phase2_init(sm, data, next_type);
906 return;
907 }
908
909 if (data->phase2_method->check(sm, data->phase2_priv, in_data)) {
910 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase2 check() asked to "
911 "ignore the packet");
912 return;
913 }
914
915 data->phase2_method->process(sm, data->phase2_priv, in_data);
916
917 if (sm->method_pending == METHOD_PENDING_WAIT) {
918 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase2 method is in "
919 "pending wait state - save decrypted response");
920 wpabuf_free(data->pending_phase2_resp);
921 data->pending_phase2_resp = wpabuf_dup(in_data);
922 }
923
924 if (!data->phase2_method->isDone(sm, data->phase2_priv))
925 return;
926
927 if (!data->phase2_method->isSuccess(sm, data->phase2_priv)) {
928 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase2 method failed");
929 eap_peap_req_failure(sm, data);
930 next_type = EAP_TYPE_NONE;
931 eap_peap_phase2_init(sm, data, next_type);
932 return;
933 }
934
935 os_free(data->phase2_key);
936 if (data->phase2_method->getKey) {
937 data->phase2_key = data->phase2_method->getKey(
938 sm, data->phase2_priv, &data->phase2_key_len);
939 if (data->phase2_key == NULL) {
940 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase2 getKey "
941 "failed");
942 eap_peap_req_failure(sm, data);
943 eap_peap_phase2_init(sm, data, EAP_TYPE_NONE);
944 return;
945 }
946 }
947
948 switch (data->state) {
949 case PHASE1_ID2:
950 case PHASE2_ID:
951 case PHASE2_SOH:
952 if (eap_user_get(sm, sm->identity, sm->identity_len, 1) != 0) {
953 wpa_hexdump_ascii(MSG_DEBUG, "EAP_PEAP: Phase2 "
954 "Identity not found in the user "
955 "database",
956 sm->identity, sm->identity_len);
957 eap_peap_req_failure(sm, data);
958 next_type = EAP_TYPE_NONE;
959 break;
960 }
961
962 #ifdef EAP_SERVER_TNC
963 if (data->state != PHASE2_SOH && sm->tnc &&
964 data->peap_version == 0) {
965 eap_peap_state(data, PHASE2_SOH);
966 wpa_printf(MSG_DEBUG, "EAP-PEAP: Try to initialize "
967 "TNC (NAP SOH)");
968 next_type = EAP_TYPE_NONE;
969 break;
970 }
971 #endif /* EAP_SERVER_TNC */
972
973 eap_peap_state(data, PHASE2_METHOD);
974 next_type = sm->user->methods[0].method;
975 sm->user_eap_method_index = 1;
976 wpa_printf(MSG_DEBUG, "EAP-PEAP: try EAP type %d", next_type);
977 break;
978 case PHASE2_METHOD:
979 eap_peap_req_success(sm, data);
980 next_type = EAP_TYPE_NONE;
981 break;
982 case FAILURE:
983 break;
984 default:
985 wpa_printf(MSG_DEBUG, "EAP-PEAP: %s - unexpected state %d",
986 __func__, data->state);
987 break;
988 }
989
990 eap_peap_phase2_init(sm, data, next_type);
991 }
992
993
eap_peap_process_phase2(struct eap_sm * sm,struct eap_peap_data * data,const struct wpabuf * respData,struct wpabuf * in_buf)994 static void eap_peap_process_phase2(struct eap_sm *sm,
995 struct eap_peap_data *data,
996 const struct wpabuf *respData,
997 struct wpabuf *in_buf)
998 {
999 struct wpabuf *in_decrypted;
1000 const struct eap_hdr *hdr;
1001 size_t len;
1002
1003 wpa_printf(MSG_DEBUG, "EAP-PEAP: received %lu bytes encrypted data for"
1004 " Phase 2", (unsigned long) wpabuf_len(in_buf));
1005
1006 if (data->pending_phase2_resp) {
1007 wpa_printf(MSG_DEBUG, "EAP-PEAP: Pending Phase 2 response - "
1008 "skip decryption and use old data");
1009 eap_peap_process_phase2_response(sm, data,
1010 data->pending_phase2_resp);
1011 wpabuf_free(data->pending_phase2_resp);
1012 data->pending_phase2_resp = NULL;
1013 return;
1014 }
1015
1016 in_decrypted = tls_connection_decrypt(sm->ssl_ctx, data->ssl.conn,
1017 in_buf);
1018 if (in_decrypted == NULL) {
1019 wpa_printf(MSG_INFO, "EAP-PEAP: Failed to decrypt Phase 2 "
1020 "data");
1021 eap_peap_state(data, FAILURE);
1022 return;
1023 }
1024
1025 wpa_hexdump_buf_key(MSG_DEBUG, "EAP-PEAP: Decrypted Phase 2 EAP",
1026 in_decrypted);
1027
1028 if (data->peap_version == 0 && data->state != PHASE2_TLV) {
1029 const struct eap_hdr *resp;
1030 struct eap_hdr *nhdr;
1031 struct wpabuf *nbuf =
1032 wpabuf_alloc(sizeof(struct eap_hdr) +
1033 wpabuf_len(in_decrypted));
1034 if (nbuf == NULL) {
1035 wpabuf_free(in_decrypted);
1036 return;
1037 }
1038
1039 resp = wpabuf_head(respData);
1040 nhdr = wpabuf_put(nbuf, sizeof(*nhdr));
1041 nhdr->code = resp->code;
1042 nhdr->identifier = resp->identifier;
1043 nhdr->length = host_to_be16(sizeof(struct eap_hdr) +
1044 wpabuf_len(in_decrypted));
1045 wpabuf_put_buf(nbuf, in_decrypted);
1046 wpabuf_free(in_decrypted);
1047
1048 in_decrypted = nbuf;
1049 }
1050
1051 hdr = wpabuf_head(in_decrypted);
1052 if (wpabuf_len(in_decrypted) < (int) sizeof(*hdr)) {
1053 wpa_printf(MSG_INFO, "EAP-PEAP: Too short Phase 2 "
1054 "EAP frame (len=%lu)",
1055 (unsigned long) wpabuf_len(in_decrypted));
1056 wpabuf_free(in_decrypted);
1057 eap_peap_req_failure(sm, data);
1058 return;
1059 }
1060 len = be_to_host16(hdr->length);
1061 if (len > wpabuf_len(in_decrypted)) {
1062 wpa_printf(MSG_INFO, "EAP-PEAP: Length mismatch in "
1063 "Phase 2 EAP frame (len=%lu hdr->length=%lu)",
1064 (unsigned long) wpabuf_len(in_decrypted),
1065 (unsigned long) len);
1066 wpabuf_free(in_decrypted);
1067 eap_peap_req_failure(sm, data);
1068 return;
1069 }
1070 wpa_printf(MSG_DEBUG, "EAP-PEAP: received Phase 2: code=%d "
1071 "identifier=%d length=%lu", hdr->code, hdr->identifier,
1072 (unsigned long) len);
1073 switch (hdr->code) {
1074 case EAP_CODE_RESPONSE:
1075 eap_peap_process_phase2_response(sm, data, in_decrypted);
1076 break;
1077 case EAP_CODE_SUCCESS:
1078 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 Success");
1079 if (data->state == SUCCESS_REQ) {
1080 eap_peap_state(data, SUCCESS);
1081 }
1082 break;
1083 case EAP_CODE_FAILURE:
1084 wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 Failure");
1085 eap_peap_state(data, FAILURE);
1086 break;
1087 default:
1088 wpa_printf(MSG_INFO, "EAP-PEAP: Unexpected code=%d in "
1089 "Phase 2 EAP header", hdr->code);
1090 break;
1091 }
1092
1093 wpabuf_free(in_decrypted);
1094 }
1095
1096
eap_peap_process_version(struct eap_sm * sm,void * priv,int peer_version)1097 static int eap_peap_process_version(struct eap_sm *sm, void *priv,
1098 int peer_version)
1099 {
1100 struct eap_peap_data *data = priv;
1101
1102 data->recv_version = peer_version;
1103 if (data->force_version >= 0 && peer_version != data->force_version) {
1104 wpa_printf(MSG_INFO, "EAP-PEAP: peer did not select the forced"
1105 " version (forced=%d peer=%d) - reject",
1106 data->force_version, peer_version);
1107 return -1;
1108 }
1109 if (peer_version < data->peap_version) {
1110 wpa_printf(MSG_DEBUG, "EAP-PEAP: peer ver=%d, own ver=%d; "
1111 "use version %d",
1112 peer_version, data->peap_version, peer_version);
1113 data->peap_version = peer_version;
1114 }
1115
1116 return 0;
1117 }
1118
1119
eap_peap_process_msg(struct eap_sm * sm,void * priv,const struct wpabuf * respData)1120 static void eap_peap_process_msg(struct eap_sm *sm, void *priv,
1121 const struct wpabuf *respData)
1122 {
1123 struct eap_peap_data *data = priv;
1124
1125 switch (data->state) {
1126 case PHASE1:
1127 if (eap_server_tls_phase1(sm, &data->ssl) < 0) {
1128 eap_peap_state(data, FAILURE);
1129 break;
1130 }
1131 break;
1132 case PHASE2_START:
1133 eap_peap_state(data, PHASE2_ID);
1134 eap_peap_phase2_init(sm, data, EAP_TYPE_IDENTITY);
1135 break;
1136 case PHASE1_ID2:
1137 case PHASE2_ID:
1138 case PHASE2_METHOD:
1139 case PHASE2_SOH:
1140 case PHASE2_TLV:
1141 eap_peap_process_phase2(sm, data, respData, data->ssl.tls_in);
1142 break;
1143 case SUCCESS_REQ:
1144 eap_peap_state(data, SUCCESS);
1145 break;
1146 case FAILURE_REQ:
1147 eap_peap_state(data, FAILURE);
1148 break;
1149 default:
1150 wpa_printf(MSG_DEBUG, "EAP-PEAP: Unexpected state %d in %s",
1151 data->state, __func__);
1152 break;
1153 }
1154 }
1155
1156
eap_peap_process(struct eap_sm * sm,void * priv,struct wpabuf * respData)1157 static void eap_peap_process(struct eap_sm *sm, void *priv,
1158 struct wpabuf *respData)
1159 {
1160 struct eap_peap_data *data = priv;
1161 if (eap_server_tls_process(sm, &data->ssl, respData, data,
1162 EAP_TYPE_PEAP, eap_peap_process_version,
1163 eap_peap_process_msg) < 0)
1164 eap_peap_state(data, FAILURE);
1165 }
1166
1167
eap_peap_isDone(struct eap_sm * sm,void * priv)1168 static Boolean eap_peap_isDone(struct eap_sm *sm, void *priv)
1169 {
1170 struct eap_peap_data *data = priv;
1171 return data->state == SUCCESS || data->state == FAILURE;
1172 }
1173
1174
eap_peap_getKey(struct eap_sm * sm,void * priv,size_t * len)1175 static u8 * eap_peap_getKey(struct eap_sm *sm, void *priv, size_t *len)
1176 {
1177 struct eap_peap_data *data = priv;
1178 u8 *eapKeyData;
1179
1180 if (data->state != SUCCESS)
1181 return NULL;
1182
1183 if (data->crypto_binding_used) {
1184 u8 csk[128];
1185 /*
1186 * Note: It looks like Microsoft implementation requires null
1187 * termination for this label while the one used for deriving
1188 * IPMK|CMK did not use null termination.
1189 */
1190 if (peap_prfplus(data->peap_version, data->ipmk, 40,
1191 "Session Key Generating Function",
1192 (u8 *) "\00", 1, csk, sizeof(csk)) < 0)
1193 return NULL;
1194 wpa_hexdump_key(MSG_DEBUG, "EAP-PEAP: CSK", csk, sizeof(csk));
1195 eapKeyData = os_malloc(EAP_TLS_KEY_LEN);
1196 if (eapKeyData) {
1197 os_memcpy(eapKeyData, csk, EAP_TLS_KEY_LEN);
1198 *len = EAP_TLS_KEY_LEN;
1199 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Derived key",
1200 eapKeyData, EAP_TLS_KEY_LEN);
1201 } else {
1202 wpa_printf(MSG_DEBUG, "EAP-PEAP: Failed to derive "
1203 "key");
1204 }
1205
1206 return eapKeyData;
1207 }
1208
1209 /* TODO: PEAPv1 - different label in some cases */
1210 eapKeyData = eap_server_tls_derive_key(sm, &data->ssl,
1211 "client EAP encryption",
1212 EAP_TLS_KEY_LEN);
1213 if (eapKeyData) {
1214 *len = EAP_TLS_KEY_LEN;
1215 wpa_hexdump(MSG_DEBUG, "EAP-PEAP: Derived key",
1216 eapKeyData, EAP_TLS_KEY_LEN);
1217 } else {
1218 wpa_printf(MSG_DEBUG, "EAP-PEAP: Failed to derive key");
1219 }
1220
1221 return eapKeyData;
1222 }
1223
1224
eap_peap_isSuccess(struct eap_sm * sm,void * priv)1225 static Boolean eap_peap_isSuccess(struct eap_sm *sm, void *priv)
1226 {
1227 struct eap_peap_data *data = priv;
1228 return data->state == SUCCESS;
1229 }
1230
1231
eap_server_peap_register(void)1232 int eap_server_peap_register(void)
1233 {
1234 struct eap_method *eap;
1235 int ret;
1236
1237 eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
1238 EAP_VENDOR_IETF, EAP_TYPE_PEAP, "PEAP");
1239 if (eap == NULL)
1240 return -1;
1241
1242 eap->init = eap_peap_init;
1243 eap->reset = eap_peap_reset;
1244 eap->buildReq = eap_peap_buildReq;
1245 eap->check = eap_peap_check;
1246 eap->process = eap_peap_process;
1247 eap->isDone = eap_peap_isDone;
1248 eap->getKey = eap_peap_getKey;
1249 eap->isSuccess = eap_peap_isSuccess;
1250
1251 ret = eap_server_method_register(eap);
1252 if (ret)
1253 eap_server_method_free(eap);
1254 return ret;
1255 }
1256