Line data Source code
1 : /*
2 : * EAP peer method: EAP-TTLS (RFC 5281)
3 : * Copyright (c) 2004-2011, 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/ms_funcs.h"
13 : #include "crypto/sha1.h"
14 : #include "crypto/tls.h"
15 : #include "eap_common/chap.h"
16 : #include "eap_common/eap_ttls.h"
17 : #include "mschapv2.h"
18 : #include "eap_i.h"
19 : #include "eap_tls_common.h"
20 : #include "eap_config.h"
21 :
22 :
23 : #define EAP_TTLS_VERSION 0
24 :
25 :
26 : static void eap_ttls_deinit(struct eap_sm *sm, void *priv);
27 :
28 :
29 : struct eap_ttls_data {
30 : struct eap_ssl_data ssl;
31 :
32 : int ttls_version;
33 :
34 : const struct eap_method *phase2_method;
35 : void *phase2_priv;
36 : int phase2_success;
37 : int phase2_start;
38 :
39 : enum phase2_types {
40 : EAP_TTLS_PHASE2_EAP,
41 : EAP_TTLS_PHASE2_MSCHAPV2,
42 : EAP_TTLS_PHASE2_MSCHAP,
43 : EAP_TTLS_PHASE2_PAP,
44 : EAP_TTLS_PHASE2_CHAP
45 : } phase2_type;
46 : struct eap_method_type phase2_eap_type;
47 : struct eap_method_type *phase2_eap_types;
48 : size_t num_phase2_eap_types;
49 :
50 : u8 auth_response[MSCHAPV2_AUTH_RESPONSE_LEN];
51 : int auth_response_valid;
52 : u8 master_key[MSCHAPV2_MASTER_KEY_LEN]; /* MSCHAPv2 master key */
53 : u8 ident;
54 : int resuming; /* starting a resumed session */
55 : int reauth; /* reauthentication */
56 : u8 *key_data;
57 : u8 *session_id;
58 : size_t id_len;
59 :
60 : struct wpabuf *pending_phase2_req;
61 :
62 : #ifdef EAP_TNC
63 : int ready_for_tnc;
64 : int tnc_started;
65 : #endif /* EAP_TNC */
66 : };
67 :
68 :
69 189 : static void * eap_ttls_init(struct eap_sm *sm)
70 : {
71 : struct eap_ttls_data *data;
72 189 : struct eap_peer_config *config = eap_get_config(sm);
73 : char *selected;
74 :
75 189 : data = os_zalloc(sizeof(*data));
76 189 : if (data == NULL)
77 0 : return NULL;
78 189 : data->ttls_version = EAP_TTLS_VERSION;
79 189 : selected = "EAP";
80 189 : data->phase2_type = EAP_TTLS_PHASE2_EAP;
81 :
82 189 : if (config && config->phase2) {
83 184 : if (os_strstr(config->phase2, "autheap=")) {
84 25 : selected = "EAP";
85 25 : data->phase2_type = EAP_TTLS_PHASE2_EAP;
86 159 : } else if (os_strstr(config->phase2, "auth=MSCHAPV2")) {
87 97 : selected = "MSCHAPV2";
88 97 : data->phase2_type = EAP_TTLS_PHASE2_MSCHAPV2;
89 62 : } else if (os_strstr(config->phase2, "auth=MSCHAP")) {
90 15 : selected = "MSCHAP";
91 15 : data->phase2_type = EAP_TTLS_PHASE2_MSCHAP;
92 47 : } else if (os_strstr(config->phase2, "auth=PAP")) {
93 40 : selected = "PAP";
94 40 : data->phase2_type = EAP_TTLS_PHASE2_PAP;
95 7 : } else if (os_strstr(config->phase2, "auth=CHAP")) {
96 7 : selected = "CHAP";
97 7 : data->phase2_type = EAP_TTLS_PHASE2_CHAP;
98 : }
99 : }
100 189 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase2 type: %s", selected);
101 :
102 189 : if (data->phase2_type == EAP_TTLS_PHASE2_EAP) {
103 30 : if (eap_peer_select_phase2_methods(config, "autheap=",
104 : &data->phase2_eap_types,
105 : &data->num_phase2_eap_types)
106 : < 0) {
107 0 : eap_ttls_deinit(sm, data);
108 0 : return NULL;
109 : }
110 :
111 30 : data->phase2_eap_type.vendor = EAP_VENDOR_IETF;
112 30 : data->phase2_eap_type.method = EAP_TYPE_NONE;
113 : }
114 :
115 189 : if (eap_peer_tls_ssl_init(sm, &data->ssl, config, EAP_TYPE_TTLS)) {
116 4 : wpa_printf(MSG_INFO, "EAP-TTLS: Failed to initialize SSL.");
117 4 : eap_ttls_deinit(sm, data);
118 4 : return NULL;
119 : }
120 :
121 185 : return data;
122 : }
123 :
124 :
125 189 : static void eap_ttls_phase2_eap_deinit(struct eap_sm *sm,
126 : struct eap_ttls_data *data)
127 : {
128 189 : if (data->phase2_priv && data->phase2_method) {
129 21 : data->phase2_method->deinit(sm, data->phase2_priv);
130 21 : data->phase2_method = NULL;
131 21 : data->phase2_priv = NULL;
132 : }
133 189 : }
134 :
135 :
136 388 : static void eap_ttls_free_key(struct eap_ttls_data *data)
137 : {
138 388 : if (data->key_data) {
139 179 : bin_clear_free(data->key_data, EAP_TLS_KEY_LEN + EAP_EMSK_LEN);
140 179 : data->key_data = NULL;
141 : }
142 388 : }
143 :
144 :
145 189 : static void eap_ttls_deinit(struct eap_sm *sm, void *priv)
146 : {
147 189 : struct eap_ttls_data *data = priv;
148 189 : if (data == NULL)
149 189 : return;
150 189 : eap_ttls_phase2_eap_deinit(sm, data);
151 189 : os_free(data->phase2_eap_types);
152 189 : eap_peer_tls_ssl_deinit(sm, &data->ssl);
153 189 : eap_ttls_free_key(data);
154 189 : os_free(data->session_id);
155 189 : wpabuf_free(data->pending_phase2_req);
156 189 : os_free(data);
157 : }
158 :
159 :
160 496 : static u8 * eap_ttls_avp_hdr(u8 *avphdr, u32 avp_code, u32 vendor_id,
161 : int mandatory, size_t len)
162 : {
163 : struct ttls_avp_vendor *avp;
164 : u8 flags;
165 : size_t hdrlen;
166 :
167 496 : avp = (struct ttls_avp_vendor *) avphdr;
168 496 : flags = mandatory ? AVP_FLAGS_MANDATORY : 0;
169 496 : if (vendor_id) {
170 200 : flags |= AVP_FLAGS_VENDOR;
171 200 : hdrlen = sizeof(*avp);
172 200 : avp->vendor_id = host_to_be32(vendor_id);
173 : } else {
174 296 : hdrlen = sizeof(struct ttls_avp);
175 : }
176 :
177 496 : avp->avp_code = host_to_be32(avp_code);
178 496 : avp->avp_length = host_to_be32(((u32) flags << 24) |
179 : (u32) (hdrlen + len));
180 :
181 496 : return avphdr + hdrlen;
182 : }
183 :
184 :
185 254 : static u8 * eap_ttls_avp_add(u8 *start, u8 *avphdr, u32 avp_code,
186 : u32 vendor_id, int mandatory,
187 : const u8 *data, size_t len)
188 : {
189 : u8 *pos;
190 254 : pos = eap_ttls_avp_hdr(avphdr, avp_code, vendor_id, mandatory, len);
191 254 : os_memcpy(pos, data, len);
192 254 : pos += len;
193 254 : AVP_PAD(start, pos);
194 254 : return pos;
195 : }
196 :
197 :
198 97 : static int eap_ttls_avp_encapsulate(struct wpabuf **resp, u32 avp_code,
199 : int mandatory)
200 : {
201 : struct wpabuf *msg;
202 : u8 *avp, *pos;
203 :
204 97 : msg = wpabuf_alloc(sizeof(struct ttls_avp) + wpabuf_len(*resp) + 4);
205 97 : if (msg == NULL) {
206 0 : wpabuf_free(*resp);
207 0 : *resp = NULL;
208 0 : return -1;
209 : }
210 :
211 97 : avp = wpabuf_mhead(msg);
212 97 : pos = eap_ttls_avp_hdr(avp, avp_code, 0, mandatory, wpabuf_len(*resp));
213 97 : os_memcpy(pos, wpabuf_head(*resp), wpabuf_len(*resp));
214 97 : pos += wpabuf_len(*resp);
215 97 : AVP_PAD(avp, pos);
216 97 : wpabuf_free(*resp);
217 97 : wpabuf_put(msg, pos - avp);
218 97 : *resp = msg;
219 97 : return 0;
220 : }
221 :
222 :
223 179 : static int eap_ttls_v0_derive_key(struct eap_sm *sm,
224 : struct eap_ttls_data *data)
225 : {
226 179 : eap_ttls_free_key(data);
227 179 : data->key_data = eap_peer_tls_derive_key(sm, &data->ssl,
228 : "ttls keying material",
229 : EAP_TLS_KEY_LEN +
230 : EAP_EMSK_LEN);
231 179 : if (!data->key_data) {
232 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Failed to derive key");
233 0 : return -1;
234 : }
235 :
236 179 : wpa_hexdump_key(MSG_DEBUG, "EAP-TTLS: Derived key",
237 179 : data->key_data, EAP_TLS_KEY_LEN);
238 179 : wpa_hexdump_key(MSG_DEBUG, "EAP-TTLS: Derived EMSK",
239 179 : data->key_data + EAP_TLS_KEY_LEN,
240 : EAP_EMSK_LEN);
241 :
242 179 : os_free(data->session_id);
243 179 : data->session_id = eap_peer_tls_derive_session_id(sm, &data->ssl,
244 : EAP_TYPE_TTLS,
245 : &data->id_len);
246 179 : if (data->session_id) {
247 358 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: Derived Session-Id",
248 179 : data->session_id, data->id_len);
249 : } else {
250 0 : wpa_printf(MSG_ERROR, "EAP-TTLS: Failed to derive Session-Id");
251 : }
252 :
253 179 : return 0;
254 : }
255 :
256 :
257 : #ifndef CONFIG_FIPS
258 109 : static u8 * eap_ttls_implicit_challenge(struct eap_sm *sm,
259 : struct eap_ttls_data *data, size_t len)
260 : {
261 109 : return eap_peer_tls_derive_key(sm, &data->ssl, "ttls challenge", len);
262 : }
263 : #endif /* CONFIG_FIPS */
264 :
265 :
266 31 : static void eap_ttls_phase2_select_eap_method(struct eap_ttls_data *data,
267 : u8 method)
268 : {
269 : size_t i;
270 86 : for (i = 0; i < data->num_phase2_eap_types; i++) {
271 62 : if (data->phase2_eap_types[i].vendor != EAP_VENDOR_IETF ||
272 31 : data->phase2_eap_types[i].method != method)
273 12 : continue;
274 :
275 19 : data->phase2_eap_type.vendor =
276 19 : data->phase2_eap_types[i].vendor;
277 19 : data->phase2_eap_type.method =
278 19 : data->phase2_eap_types[i].method;
279 19 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Selected "
280 : "Phase 2 EAP vendor %d method %d",
281 : data->phase2_eap_type.vendor,
282 : data->phase2_eap_type.method);
283 19 : break;
284 : }
285 31 : }
286 :
287 :
288 56 : static int eap_ttls_phase2_eap_process(struct eap_sm *sm,
289 : struct eap_ttls_data *data,
290 : struct eap_method_ret *ret,
291 : struct eap_hdr *hdr, size_t len,
292 : struct wpabuf **resp)
293 : {
294 : struct wpabuf msg;
295 : struct eap_method_ret iret;
296 :
297 56 : os_memset(&iret, 0, sizeof(iret));
298 56 : wpabuf_set(&msg, hdr, len);
299 56 : *resp = data->phase2_method->process(sm, data->phase2_priv, &iret,
300 : &msg);
301 94 : if ((iret.methodState == METHOD_DONE ||
302 75 : iret.methodState == METHOD_MAY_CONT) &&
303 65 : (iret.decision == DECISION_UNCOND_SUCC ||
304 45 : iret.decision == DECISION_COND_SUCC ||
305 17 : iret.decision == DECISION_FAIL)) {
306 37 : ret->methodState = iret.methodState;
307 37 : ret->decision = iret.decision;
308 : }
309 :
310 56 : return 0;
311 : }
312 :
313 :
314 70 : static int eap_ttls_phase2_request_eap_method(struct eap_sm *sm,
315 : struct eap_ttls_data *data,
316 : struct eap_method_ret *ret,
317 : struct eap_hdr *hdr, size_t len,
318 : u8 method, struct wpabuf **resp)
319 : {
320 : #ifdef EAP_TNC
321 91 : if (data->tnc_started && data->phase2_method &&
322 63 : data->phase2_priv && method == EAP_TYPE_TNC &&
323 21 : data->phase2_eap_type.method == EAP_TYPE_TNC)
324 21 : return eap_ttls_phase2_eap_process(sm, data, ret, hdr, len,
325 : resp);
326 :
327 49 : if (data->ready_for_tnc && !data->tnc_started &&
328 : method == EAP_TYPE_TNC) {
329 0 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Start TNC after completed "
330 : "EAP method");
331 0 : data->tnc_started = 1;
332 : }
333 :
334 49 : if (data->tnc_started) {
335 4 : if (data->phase2_eap_type.vendor != EAP_VENDOR_IETF ||
336 2 : data->phase2_eap_type.method == EAP_TYPE_TNC) {
337 0 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Unexpected EAP "
338 : "type %d for TNC", method);
339 0 : return -1;
340 : }
341 :
342 2 : data->phase2_eap_type.vendor = EAP_VENDOR_IETF;
343 2 : data->phase2_eap_type.method = method;
344 2 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Selected "
345 : "Phase 2 EAP vendor %d method %d (TNC)",
346 : data->phase2_eap_type.vendor,
347 : data->phase2_eap_type.method);
348 :
349 2 : if (data->phase2_type == EAP_TTLS_PHASE2_EAP)
350 0 : eap_ttls_phase2_eap_deinit(sm, data);
351 : }
352 : #endif /* EAP_TNC */
353 :
354 98 : if (data->phase2_eap_type.vendor == EAP_VENDOR_IETF &&
355 49 : data->phase2_eap_type.method == EAP_TYPE_NONE)
356 31 : eap_ttls_phase2_select_eap_method(data, method);
357 :
358 49 : if (method != data->phase2_eap_type.method || method == EAP_TYPE_NONE)
359 : {
360 14 : if (eap_peer_tls_phase2_nak(data->phase2_eap_types,
361 : data->num_phase2_eap_types,
362 : hdr, resp))
363 0 : return -1;
364 14 : return 0;
365 : }
366 :
367 35 : if (data->phase2_priv == NULL) {
368 21 : data->phase2_method = eap_peer_get_eap_method(
369 : EAP_VENDOR_IETF, method);
370 21 : if (data->phase2_method) {
371 21 : sm->init_phase2 = 1;
372 21 : data->phase2_priv = data->phase2_method->init(sm);
373 21 : sm->init_phase2 = 0;
374 : }
375 : }
376 35 : if (data->phase2_priv == NULL || data->phase2_method == NULL) {
377 0 : wpa_printf(MSG_INFO, "EAP-TTLS: failed to initialize "
378 : "Phase 2 EAP method %d", method);
379 0 : return -1;
380 : }
381 :
382 35 : return eap_ttls_phase2_eap_process(sm, data, ret, hdr, len, resp);
383 : }
384 :
385 :
386 99 : static int eap_ttls_phase2_request_eap(struct eap_sm *sm,
387 : struct eap_ttls_data *data,
388 : struct eap_method_ret *ret,
389 : struct eap_hdr *hdr,
390 : struct wpabuf **resp)
391 : {
392 99 : size_t len = be_to_host16(hdr->length);
393 : u8 *pos;
394 99 : struct eap_peer_config *config = eap_get_config(sm);
395 :
396 99 : if (len <= sizeof(struct eap_hdr)) {
397 0 : wpa_printf(MSG_INFO, "EAP-TTLS: too short "
398 : "Phase 2 request (len=%lu)", (unsigned long) len);
399 0 : return -1;
400 : }
401 99 : pos = (u8 *) (hdr + 1);
402 99 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase 2 EAP Request: type=%d", *pos);
403 99 : switch (*pos) {
404 : case EAP_TYPE_IDENTITY:
405 29 : *resp = eap_sm_buildIdentity(sm, hdr->identifier, 1);
406 29 : break;
407 : default:
408 70 : if (eap_ttls_phase2_request_eap_method(sm, data, ret, hdr, len,
409 70 : *pos, resp) < 0)
410 0 : return -1;
411 70 : break;
412 : }
413 :
414 101 : if (*resp == NULL &&
415 4 : (config->pending_req_identity || config->pending_req_password ||
416 0 : config->pending_req_otp)) {
417 2 : return 0;
418 : }
419 :
420 97 : if (*resp == NULL)
421 0 : return -1;
422 :
423 97 : wpa_hexdump_buf(MSG_DEBUG, "EAP-TTLS: AVP encapsulate EAP Response",
424 : *resp);
425 97 : return eap_ttls_avp_encapsulate(resp, RADIUS_ATTR_EAP_MESSAGE, 1);
426 : }
427 :
428 :
429 87 : static int eap_ttls_phase2_request_mschapv2(struct eap_sm *sm,
430 : struct eap_ttls_data *data,
431 : struct eap_method_ret *ret,
432 : struct wpabuf **resp)
433 : {
434 : #ifdef CONFIG_FIPS
435 : wpa_printf(MSG_ERROR, "EAP-TTLS: MSCHAPV2 not supported in FIPS build");
436 : return -1;
437 : #else /* CONFIG_FIPS */
438 : #ifdef EAP_MSCHAPv2
439 : struct wpabuf *msg;
440 : u8 *buf, *pos, *challenge, *peer_challenge;
441 : const u8 *identity, *password;
442 : size_t identity_len, password_len;
443 : int pwhash;
444 :
445 87 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase 2 MSCHAPV2 Request");
446 :
447 87 : identity = eap_get_config_identity(sm, &identity_len);
448 87 : password = eap_get_config_password2(sm, &password_len, &pwhash);
449 87 : if (identity == NULL || password == NULL)
450 0 : return -1;
451 :
452 87 : msg = wpabuf_alloc(identity_len + 1000);
453 87 : if (msg == NULL) {
454 0 : wpa_printf(MSG_ERROR,
455 : "EAP-TTLS/MSCHAPV2: Failed to allocate memory");
456 0 : return -1;
457 : }
458 87 : pos = buf = wpabuf_mhead(msg);
459 :
460 : /* User-Name */
461 87 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_USER_NAME, 0, 1,
462 : identity, identity_len);
463 :
464 : /* MS-CHAP-Challenge */
465 87 : challenge = eap_ttls_implicit_challenge(
466 : sm, data, EAP_TTLS_MSCHAPV2_CHALLENGE_LEN + 1);
467 87 : if (challenge == NULL) {
468 0 : wpabuf_free(msg);
469 0 : wpa_printf(MSG_ERROR, "EAP-TTLS/MSCHAPV2: Failed to derive "
470 : "implicit challenge");
471 0 : return -1;
472 : }
473 :
474 87 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_MS_CHAP_CHALLENGE,
475 : RADIUS_VENDOR_ID_MICROSOFT, 1,
476 : challenge, EAP_TTLS_MSCHAPV2_CHALLENGE_LEN);
477 :
478 : /* MS-CHAP2-Response */
479 87 : pos = eap_ttls_avp_hdr(pos, RADIUS_ATTR_MS_CHAP2_RESPONSE,
480 : RADIUS_VENDOR_ID_MICROSOFT, 1,
481 : EAP_TTLS_MSCHAPV2_RESPONSE_LEN);
482 87 : data->ident = challenge[EAP_TTLS_MSCHAPV2_CHALLENGE_LEN];
483 87 : *pos++ = data->ident;
484 87 : *pos++ = 0; /* Flags */
485 87 : if (os_get_random(pos, EAP_TTLS_MSCHAPV2_CHALLENGE_LEN) < 0) {
486 0 : os_free(challenge);
487 0 : wpabuf_free(msg);
488 0 : wpa_printf(MSG_ERROR, "EAP-TTLS/MSCHAPV2: Failed to get "
489 : "random data for peer challenge");
490 0 : return -1;
491 : }
492 87 : peer_challenge = pos;
493 87 : pos += EAP_TTLS_MSCHAPV2_CHALLENGE_LEN;
494 87 : os_memset(pos, 0, 8); /* Reserved, must be zero */
495 87 : pos += 8;
496 87 : if (mschapv2_derive_response(identity, identity_len, password,
497 : password_len, pwhash, challenge,
498 87 : peer_challenge, pos, data->auth_response,
499 87 : data->master_key)) {
500 0 : os_free(challenge);
501 0 : wpabuf_free(msg);
502 0 : wpa_printf(MSG_ERROR, "EAP-TTLS/MSCHAPV2: Failed to derive "
503 : "response");
504 0 : return -1;
505 : }
506 87 : data->auth_response_valid = 1;
507 :
508 87 : pos += 24;
509 87 : os_free(challenge);
510 87 : AVP_PAD(buf, pos);
511 :
512 87 : wpabuf_put(msg, pos - buf);
513 87 : *resp = msg;
514 :
515 87 : return 0;
516 : #else /* EAP_MSCHAPv2 */
517 : wpa_printf(MSG_ERROR, "EAP-TTLS: MSCHAPv2 not included in the build");
518 : return -1;
519 : #endif /* EAP_MSCHAPv2 */
520 : #endif /* CONFIG_FIPS */
521 : }
522 :
523 :
524 13 : static int eap_ttls_phase2_request_mschap(struct eap_sm *sm,
525 : struct eap_ttls_data *data,
526 : struct eap_method_ret *ret,
527 : struct wpabuf **resp)
528 : {
529 : #ifdef CONFIG_FIPS
530 : wpa_printf(MSG_ERROR, "EAP-TTLS: MSCHAP not supported in FIPS build");
531 : return -1;
532 : #else /* CONFIG_FIPS */
533 : struct wpabuf *msg;
534 : u8 *buf, *pos, *challenge;
535 : const u8 *identity, *password;
536 : size_t identity_len, password_len;
537 : int pwhash;
538 :
539 13 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase 2 MSCHAP Request");
540 :
541 13 : identity = eap_get_config_identity(sm, &identity_len);
542 13 : password = eap_get_config_password2(sm, &password_len, &pwhash);
543 13 : if (identity == NULL || password == NULL)
544 0 : return -1;
545 :
546 13 : msg = wpabuf_alloc(identity_len + 1000);
547 13 : if (msg == NULL) {
548 0 : wpa_printf(MSG_ERROR,
549 : "EAP-TTLS/MSCHAP: Failed to allocate memory");
550 0 : return -1;
551 : }
552 13 : pos = buf = wpabuf_mhead(msg);
553 :
554 : /* User-Name */
555 13 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_USER_NAME, 0, 1,
556 : identity, identity_len);
557 :
558 : /* MS-CHAP-Challenge */
559 13 : challenge = eap_ttls_implicit_challenge(
560 : sm, data, EAP_TTLS_MSCHAP_CHALLENGE_LEN + 1);
561 13 : if (challenge == NULL) {
562 0 : wpabuf_free(msg);
563 0 : wpa_printf(MSG_ERROR, "EAP-TTLS/MSCHAP: Failed to derive "
564 : "implicit challenge");
565 0 : return -1;
566 : }
567 :
568 13 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_MS_CHAP_CHALLENGE,
569 : RADIUS_VENDOR_ID_MICROSOFT, 1,
570 : challenge, EAP_TTLS_MSCHAP_CHALLENGE_LEN);
571 :
572 : /* MS-CHAP-Response */
573 13 : pos = eap_ttls_avp_hdr(pos, RADIUS_ATTR_MS_CHAP_RESPONSE,
574 : RADIUS_VENDOR_ID_MICROSOFT, 1,
575 : EAP_TTLS_MSCHAP_RESPONSE_LEN);
576 13 : data->ident = challenge[EAP_TTLS_MSCHAP_CHALLENGE_LEN];
577 13 : *pos++ = data->ident;
578 13 : *pos++ = 1; /* Flags: Use NT style passwords */
579 13 : os_memset(pos, 0, 24); /* LM-Response */
580 13 : pos += 24;
581 13 : if (pwhash) {
582 0 : challenge_response(challenge, password, pos); /* NT-Response */
583 0 : wpa_hexdump_key(MSG_DEBUG, "EAP-TTLS: MSCHAP password hash",
584 : password, 16);
585 : } else {
586 13 : nt_challenge_response(challenge, password, password_len,
587 : pos); /* NT-Response */
588 13 : wpa_hexdump_ascii_key(MSG_DEBUG, "EAP-TTLS: MSCHAP password",
589 : password, password_len);
590 : }
591 13 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: MSCHAP implicit challenge",
592 : challenge, EAP_TTLS_MSCHAP_CHALLENGE_LEN);
593 13 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: MSCHAP response", pos, 24);
594 13 : pos += 24;
595 13 : os_free(challenge);
596 13 : AVP_PAD(buf, pos);
597 :
598 13 : wpabuf_put(msg, pos - buf);
599 13 : *resp = msg;
600 :
601 : /* EAP-TTLS/MSCHAP does not provide tunneled success
602 : * notification, so assume that Phase2 succeeds. */
603 13 : ret->methodState = METHOD_DONE;
604 13 : ret->decision = DECISION_COND_SUCC;
605 :
606 13 : return 0;
607 : #endif /* CONFIG_FIPS */
608 : }
609 :
610 :
611 36 : static int eap_ttls_phase2_request_pap(struct eap_sm *sm,
612 : struct eap_ttls_data *data,
613 : struct eap_method_ret *ret,
614 : struct wpabuf **resp)
615 : {
616 : struct wpabuf *msg;
617 : u8 *buf, *pos;
618 : size_t pad;
619 : const u8 *identity, *password;
620 : size_t identity_len, password_len;
621 :
622 36 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase 2 PAP Request");
623 :
624 36 : identity = eap_get_config_identity(sm, &identity_len);
625 36 : password = eap_get_config_password(sm, &password_len);
626 36 : if (identity == NULL || password == NULL)
627 0 : return -1;
628 :
629 36 : msg = wpabuf_alloc(identity_len + password_len + 100);
630 36 : if (msg == NULL) {
631 0 : wpa_printf(MSG_ERROR,
632 : "EAP-TTLS/PAP: Failed to allocate memory");
633 0 : return -1;
634 : }
635 36 : pos = buf = wpabuf_mhead(msg);
636 :
637 : /* User-Name */
638 36 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_USER_NAME, 0, 1,
639 : identity, identity_len);
640 :
641 : /* User-Password; in RADIUS, this is encrypted, but EAP-TTLS encrypts
642 : * the data, so no separate encryption is used in the AVP itself.
643 : * However, the password is padded to obfuscate its length. */
644 36 : pad = password_len == 0 ? 16 : (16 - (password_len & 15)) & 15;
645 36 : pos = eap_ttls_avp_hdr(pos, RADIUS_ATTR_USER_PASSWORD, 0, 1,
646 : password_len + pad);
647 36 : os_memcpy(pos, password, password_len);
648 36 : pos += password_len;
649 36 : os_memset(pos, 0, pad);
650 36 : pos += pad;
651 36 : AVP_PAD(buf, pos);
652 :
653 36 : wpabuf_put(msg, pos - buf);
654 36 : *resp = msg;
655 :
656 : /* EAP-TTLS/PAP does not provide tunneled success notification,
657 : * so assume that Phase2 succeeds. */
658 36 : ret->methodState = METHOD_DONE;
659 36 : ret->decision = DECISION_COND_SUCC;
660 :
661 36 : return 0;
662 : }
663 :
664 :
665 9 : static int eap_ttls_phase2_request_chap(struct eap_sm *sm,
666 : struct eap_ttls_data *data,
667 : struct eap_method_ret *ret,
668 : struct wpabuf **resp)
669 : {
670 : #ifdef CONFIG_FIPS
671 : wpa_printf(MSG_ERROR, "EAP-TTLS: CHAP not supported in FIPS build");
672 : return -1;
673 : #else /* CONFIG_FIPS */
674 : struct wpabuf *msg;
675 : u8 *buf, *pos, *challenge;
676 : const u8 *identity, *password;
677 : size_t identity_len, password_len;
678 :
679 9 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Phase 2 CHAP Request");
680 :
681 9 : identity = eap_get_config_identity(sm, &identity_len);
682 9 : password = eap_get_config_password(sm, &password_len);
683 9 : if (identity == NULL || password == NULL)
684 0 : return -1;
685 :
686 9 : msg = wpabuf_alloc(identity_len + 1000);
687 9 : if (msg == NULL) {
688 0 : wpa_printf(MSG_ERROR,
689 : "EAP-TTLS/CHAP: Failed to allocate memory");
690 0 : return -1;
691 : }
692 9 : pos = buf = wpabuf_mhead(msg);
693 :
694 : /* User-Name */
695 9 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_USER_NAME, 0, 1,
696 : identity, identity_len);
697 :
698 : /* CHAP-Challenge */
699 9 : challenge = eap_ttls_implicit_challenge(
700 : sm, data, EAP_TTLS_CHAP_CHALLENGE_LEN + 1);
701 9 : if (challenge == NULL) {
702 0 : wpabuf_free(msg);
703 0 : wpa_printf(MSG_ERROR, "EAP-TTLS/CHAP: Failed to derive "
704 : "implicit challenge");
705 0 : return -1;
706 : }
707 :
708 9 : pos = eap_ttls_avp_add(buf, pos, RADIUS_ATTR_CHAP_CHALLENGE, 0, 1,
709 : challenge, EAP_TTLS_CHAP_CHALLENGE_LEN);
710 :
711 : /* CHAP-Password */
712 9 : pos = eap_ttls_avp_hdr(pos, RADIUS_ATTR_CHAP_PASSWORD, 0, 1,
713 : 1 + EAP_TTLS_CHAP_PASSWORD_LEN);
714 9 : data->ident = challenge[EAP_TTLS_CHAP_CHALLENGE_LEN];
715 9 : *pos++ = data->ident;
716 :
717 : /* MD5(Ident + Password + Challenge) */
718 9 : chap_md5(data->ident, password, password_len, challenge,
719 : EAP_TTLS_CHAP_CHALLENGE_LEN, pos);
720 :
721 9 : wpa_hexdump_ascii(MSG_DEBUG, "EAP-TTLS: CHAP username",
722 : identity, identity_len);
723 9 : wpa_hexdump_ascii_key(MSG_DEBUG, "EAP-TTLS: CHAP password",
724 : password, password_len);
725 9 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: CHAP implicit challenge",
726 : challenge, EAP_TTLS_CHAP_CHALLENGE_LEN);
727 9 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: CHAP password",
728 : pos, EAP_TTLS_CHAP_PASSWORD_LEN);
729 9 : pos += EAP_TTLS_CHAP_PASSWORD_LEN;
730 9 : os_free(challenge);
731 9 : AVP_PAD(buf, pos);
732 :
733 9 : wpabuf_put(msg, pos - buf);
734 9 : *resp = msg;
735 :
736 : /* EAP-TTLS/CHAP does not provide tunneled success
737 : * notification, so assume that Phase2 succeeds. */
738 9 : ret->methodState = METHOD_DONE;
739 9 : ret->decision = DECISION_COND_SUCC;
740 :
741 9 : return 0;
742 : #endif /* CONFIG_FIPS */
743 : }
744 :
745 :
746 249 : static int eap_ttls_phase2_request(struct eap_sm *sm,
747 : struct eap_ttls_data *data,
748 : struct eap_method_ret *ret,
749 : struct eap_hdr *hdr,
750 : struct wpabuf **resp)
751 : {
752 249 : int res = 0;
753 : size_t len;
754 249 : enum phase2_types phase2_type = data->phase2_type;
755 :
756 : #ifdef EAP_TNC
757 249 : if (data->tnc_started) {
758 23 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Processing TNC");
759 23 : phase2_type = EAP_TTLS_PHASE2_EAP;
760 : }
761 : #endif /* EAP_TNC */
762 :
763 249 : if (phase2_type == EAP_TTLS_PHASE2_MSCHAPV2 ||
764 145 : phase2_type == EAP_TTLS_PHASE2_MSCHAP ||
765 108 : phase2_type == EAP_TTLS_PHASE2_PAP ||
766 : phase2_type == EAP_TTLS_PHASE2_CHAP) {
767 150 : if (eap_get_config_identity(sm, &len) == NULL) {
768 2 : wpa_printf(MSG_INFO,
769 : "EAP-TTLS: Identity not configured");
770 2 : eap_sm_request_identity(sm);
771 2 : if (eap_get_config_password(sm, &len) == NULL)
772 1 : eap_sm_request_password(sm);
773 2 : return 0;
774 : }
775 :
776 148 : if (eap_get_config_password(sm, &len) == NULL) {
777 3 : wpa_printf(MSG_INFO,
778 : "EAP-TTLS: Password not configured");
779 3 : eap_sm_request_password(sm);
780 3 : return 0;
781 : }
782 : }
783 :
784 244 : switch (phase2_type) {
785 : case EAP_TTLS_PHASE2_EAP:
786 99 : res = eap_ttls_phase2_request_eap(sm, data, ret, hdr, resp);
787 99 : break;
788 : case EAP_TTLS_PHASE2_MSCHAPV2:
789 87 : res = eap_ttls_phase2_request_mschapv2(sm, data, ret, resp);
790 87 : break;
791 : case EAP_TTLS_PHASE2_MSCHAP:
792 13 : res = eap_ttls_phase2_request_mschap(sm, data, ret, resp);
793 13 : break;
794 : case EAP_TTLS_PHASE2_PAP:
795 36 : res = eap_ttls_phase2_request_pap(sm, data, ret, resp);
796 36 : break;
797 : case EAP_TTLS_PHASE2_CHAP:
798 9 : res = eap_ttls_phase2_request_chap(sm, data, ret, resp);
799 9 : break;
800 : default:
801 0 : wpa_printf(MSG_ERROR, "EAP-TTLS: Phase 2 - Unknown");
802 0 : res = -1;
803 0 : break;
804 : }
805 :
806 244 : if (res < 0) {
807 0 : ret->methodState = METHOD_DONE;
808 0 : ret->decision = DECISION_FAIL;
809 : }
810 :
811 244 : return res;
812 : }
813 :
814 :
815 : struct ttls_parse_avp {
816 : u8 *mschapv2;
817 : u8 *eapdata;
818 : size_t eap_len;
819 : int mschapv2_error;
820 : };
821 :
822 :
823 70 : static int eap_ttls_parse_attr_eap(const u8 *dpos, size_t dlen,
824 : struct ttls_parse_avp *parse)
825 : {
826 70 : wpa_printf(MSG_DEBUG, "EAP-TTLS: AVP - EAP Message");
827 70 : if (parse->eapdata == NULL) {
828 70 : parse->eapdata = os_malloc(dlen);
829 70 : if (parse->eapdata == NULL) {
830 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Failed to allocate "
831 : "memory for Phase 2 EAP data");
832 0 : return -1;
833 : }
834 70 : os_memcpy(parse->eapdata, dpos, dlen);
835 70 : parse->eap_len = dlen;
836 : } else {
837 0 : u8 *neweap = os_realloc(parse->eapdata, parse->eap_len + dlen);
838 0 : if (neweap == NULL) {
839 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Failed to allocate "
840 : "memory for Phase 2 EAP data");
841 0 : return -1;
842 : }
843 0 : os_memcpy(neweap + parse->eap_len, dpos, dlen);
844 0 : parse->eapdata = neweap;
845 0 : parse->eap_len += dlen;
846 : }
847 :
848 70 : return 0;
849 : }
850 :
851 :
852 156 : static int eap_ttls_parse_avp(u8 *pos, size_t left,
853 : struct ttls_parse_avp *parse)
854 : {
855 : struct ttls_avp *avp;
856 156 : u32 avp_code, avp_length, vendor_id = 0;
857 : u8 avp_flags, *dpos;
858 : size_t dlen;
859 :
860 156 : avp = (struct ttls_avp *) pos;
861 156 : avp_code = be_to_host32(avp->avp_code);
862 156 : avp_length = be_to_host32(avp->avp_length);
863 156 : avp_flags = (avp_length >> 24) & 0xff;
864 156 : avp_length &= 0xffffff;
865 156 : wpa_printf(MSG_DEBUG, "EAP-TTLS: AVP: code=%d flags=0x%02x "
866 : "length=%d", (int) avp_code, avp_flags,
867 : (int) avp_length);
868 :
869 156 : if (avp_length > left) {
870 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: AVP overflow "
871 : "(len=%d, left=%lu) - dropped",
872 : (int) avp_length, (unsigned long) left);
873 0 : return -1;
874 : }
875 :
876 156 : if (avp_length < sizeof(*avp)) {
877 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Invalid AVP length %d",
878 : avp_length);
879 0 : return -1;
880 : }
881 :
882 156 : dpos = (u8 *) (avp + 1);
883 156 : dlen = avp_length - sizeof(*avp);
884 156 : if (avp_flags & AVP_FLAGS_VENDOR) {
885 86 : if (dlen < 4) {
886 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Vendor AVP "
887 : "underflow");
888 0 : return -1;
889 : }
890 86 : vendor_id = WPA_GET_BE32(dpos);
891 86 : wpa_printf(MSG_DEBUG, "EAP-TTLS: AVP vendor_id %d",
892 : (int) vendor_id);
893 86 : dpos += 4;
894 86 : dlen -= 4;
895 : }
896 :
897 156 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: AVP data", dpos, dlen);
898 :
899 156 : if (vendor_id == 0 && avp_code == RADIUS_ATTR_EAP_MESSAGE) {
900 140 : if (eap_ttls_parse_attr_eap(dpos, dlen, parse) < 0)
901 0 : return -1;
902 86 : } else if (vendor_id == 0 && avp_code == RADIUS_ATTR_REPLY_MESSAGE) {
903 : /* This is an optional message that can be displayed to
904 : * the user. */
905 0 : wpa_hexdump_ascii(MSG_DEBUG, "EAP-TTLS: AVP - Reply-Message",
906 : dpos, dlen);
907 86 : } else if (vendor_id == RADIUS_VENDOR_ID_MICROSOFT &&
908 : avp_code == RADIUS_ATTR_MS_CHAP2_SUCCESS) {
909 85 : wpa_hexdump_ascii(MSG_DEBUG, "EAP-TTLS: MS-CHAP2-Success",
910 : dpos, dlen);
911 85 : if (dlen != 43) {
912 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Unexpected "
913 : "MS-CHAP2-Success length "
914 : "(len=%lu, expected 43)",
915 : (unsigned long) dlen);
916 0 : return -1;
917 : }
918 85 : parse->mschapv2 = dpos;
919 1 : } else if (vendor_id == RADIUS_VENDOR_ID_MICROSOFT &&
920 : avp_code == RADIUS_ATTR_MS_CHAP_ERROR) {
921 1 : wpa_hexdump_ascii(MSG_DEBUG, "EAP-TTLS: MS-CHAP-Error",
922 : dpos, dlen);
923 1 : parse->mschapv2_error = 1;
924 0 : } else if (avp_flags & AVP_FLAGS_MANDATORY) {
925 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Unsupported mandatory AVP "
926 : "code %d vendor_id %d - dropped",
927 : (int) avp_code, (int) vendor_id);
928 0 : return -1;
929 : } else {
930 0 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Ignoring unsupported AVP "
931 : "code %d vendor_id %d",
932 : (int) avp_code, (int) vendor_id);
933 : }
934 :
935 156 : return avp_length;
936 : }
937 :
938 :
939 156 : static int eap_ttls_parse_avps(struct wpabuf *in_decrypted,
940 : struct ttls_parse_avp *parse)
941 : {
942 : u8 *pos;
943 : size_t left, pad;
944 : int avp_length;
945 :
946 156 : pos = wpabuf_mhead(in_decrypted);
947 156 : left = wpabuf_len(in_decrypted);
948 156 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: Decrypted Phase 2 AVPs", pos, left);
949 156 : if (left < sizeof(struct ttls_avp)) {
950 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Too short Phase 2 AVP frame"
951 : " len=%lu expected %lu or more - dropped",
952 : (unsigned long) left,
953 : (unsigned long) sizeof(struct ttls_avp));
954 0 : return -1;
955 : }
956 :
957 : /* Parse AVPs */
958 156 : os_memset(parse, 0, sizeof(*parse));
959 :
960 468 : while (left > 0) {
961 156 : avp_length = eap_ttls_parse_avp(pos, left, parse);
962 156 : if (avp_length < 0)
963 0 : return -1;
964 :
965 156 : pad = (4 - (avp_length & 3)) & 3;
966 156 : pos += avp_length + pad;
967 156 : if (left < avp_length + pad)
968 85 : left = 0;
969 : else
970 71 : left -= avp_length + pad;
971 : }
972 :
973 156 : return 0;
974 : }
975 :
976 :
977 179 : static u8 * eap_ttls_fake_identity_request(void)
978 : {
979 : struct eap_hdr *hdr;
980 : u8 *buf;
981 :
982 179 : wpa_printf(MSG_DEBUG, "EAP-TTLS: empty data in beginning of "
983 : "Phase 2 - use fake EAP-Request Identity");
984 179 : buf = os_malloc(sizeof(*hdr) + 1);
985 179 : if (buf == NULL) {
986 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: failed to allocate "
987 : "memory for fake EAP-Identity Request");
988 0 : return NULL;
989 : }
990 :
991 179 : hdr = (struct eap_hdr *) buf;
992 179 : hdr->code = EAP_CODE_REQUEST;
993 179 : hdr->identifier = 0;
994 179 : hdr->length = host_to_be16(sizeof(*hdr) + 1);
995 179 : buf[sizeof(*hdr)] = EAP_TYPE_IDENTITY;
996 :
997 179 : return buf;
998 : }
999 :
1000 :
1001 247 : static int eap_ttls_encrypt_response(struct eap_sm *sm,
1002 : struct eap_ttls_data *data,
1003 : struct wpabuf *resp, u8 identifier,
1004 : struct wpabuf **out_data)
1005 : {
1006 247 : if (resp == NULL)
1007 5 : return 0;
1008 :
1009 242 : wpa_hexdump_buf_key(MSG_DEBUG, "EAP-TTLS: Encrypting Phase 2 data",
1010 : resp);
1011 242 : if (eap_peer_tls_encrypt(sm, &data->ssl, EAP_TYPE_TTLS,
1012 : data->ttls_version, identifier,
1013 : resp, out_data)) {
1014 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Failed to encrypt a Phase 2 "
1015 : "frame");
1016 0 : wpabuf_free(resp);
1017 0 : return -1;
1018 : }
1019 242 : wpabuf_free(resp);
1020 :
1021 242 : return 0;
1022 : }
1023 :
1024 :
1025 70 : static int eap_ttls_process_phase2_eap(struct eap_sm *sm,
1026 : struct eap_ttls_data *data,
1027 : struct eap_method_ret *ret,
1028 : struct ttls_parse_avp *parse,
1029 : struct wpabuf **resp)
1030 : {
1031 : struct eap_hdr *hdr;
1032 : size_t len;
1033 :
1034 70 : if (parse->eapdata == NULL) {
1035 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: No EAP Message in the "
1036 : "packet - dropped");
1037 0 : return -1;
1038 : }
1039 :
1040 140 : wpa_hexdump(MSG_DEBUG, "EAP-TTLS: Phase 2 EAP",
1041 70 : parse->eapdata, parse->eap_len);
1042 70 : hdr = (struct eap_hdr *) parse->eapdata;
1043 :
1044 70 : if (parse->eap_len < sizeof(*hdr)) {
1045 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Too short Phase 2 EAP "
1046 : "frame (len=%lu, expected %lu or more) - dropped",
1047 : (unsigned long) parse->eap_len,
1048 : (unsigned long) sizeof(*hdr));
1049 0 : return -1;
1050 : }
1051 70 : len = be_to_host16(hdr->length);
1052 70 : if (len > parse->eap_len) {
1053 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Length mismatch in Phase 2 "
1054 : "EAP frame (EAP hdr len=%lu, EAP data len in "
1055 : "AVP=%lu)",
1056 : (unsigned long) len,
1057 : (unsigned long) parse->eap_len);
1058 0 : return -1;
1059 : }
1060 140 : wpa_printf(MSG_DEBUG, "EAP-TTLS: received Phase 2: code=%d "
1061 : "identifier=%d length=%lu",
1062 140 : hdr->code, hdr->identifier, (unsigned long) len);
1063 70 : switch (hdr->code) {
1064 : case EAP_CODE_REQUEST:
1065 70 : if (eap_ttls_phase2_request(sm, data, ret, hdr, resp)) {
1066 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase2 Request "
1067 : "processing failed");
1068 0 : return -1;
1069 : }
1070 70 : break;
1071 : default:
1072 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Unexpected code=%d in "
1073 0 : "Phase 2 EAP header", hdr->code);
1074 0 : return -1;
1075 : }
1076 :
1077 70 : return 0;
1078 : }
1079 :
1080 :
1081 88 : static int eap_ttls_process_phase2_mschapv2(struct eap_sm *sm,
1082 : struct eap_ttls_data *data,
1083 : struct eap_method_ret *ret,
1084 : struct ttls_parse_avp *parse)
1085 : {
1086 : #ifdef EAP_MSCHAPv2
1087 88 : if (parse->mschapv2_error) {
1088 1 : wpa_printf(MSG_DEBUG, "EAP-TTLS/MSCHAPV2: Received "
1089 : "MS-CHAP-Error - failed");
1090 1 : ret->methodState = METHOD_DONE;
1091 1 : ret->decision = DECISION_FAIL;
1092 : /* Reply with empty data to ACK error */
1093 1 : return 1;
1094 : }
1095 :
1096 87 : if (parse->mschapv2 == NULL) {
1097 : #ifdef EAP_TNC
1098 2 : if (data->phase2_success && parse->eapdata) {
1099 : /*
1100 : * Allow EAP-TNC to be started after successfully
1101 : * completed MSCHAPV2.
1102 : */
1103 2 : return 1;
1104 : }
1105 : #endif /* EAP_TNC */
1106 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: no MS-CHAP2-Success AVP "
1107 : "received for Phase2 MSCHAPV2");
1108 0 : return -1;
1109 : }
1110 85 : if (parse->mschapv2[0] != data->ident) {
1111 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Ident mismatch for Phase 2 "
1112 : "MSCHAPV2 (received Ident 0x%02x, expected 0x%02x)",
1113 0 : parse->mschapv2[0], data->ident);
1114 0 : return -1;
1115 : }
1116 170 : if (!data->auth_response_valid ||
1117 85 : mschapv2_verify_auth_response(data->auth_response,
1118 85 : parse->mschapv2 + 1, 42)) {
1119 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: Invalid authenticator "
1120 : "response in Phase 2 MSCHAPV2 success request");
1121 0 : return -1;
1122 : }
1123 :
1124 85 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase 2 MSCHAPV2 "
1125 : "authentication succeeded");
1126 85 : ret->methodState = METHOD_DONE;
1127 85 : ret->decision = DECISION_UNCOND_SUCC;
1128 85 : data->phase2_success = 1;
1129 :
1130 : /*
1131 : * Reply with empty data; authentication server will reply
1132 : * with EAP-Success after this.
1133 : */
1134 85 : return 1;
1135 : #else /* EAP_MSCHAPv2 */
1136 : wpa_printf(MSG_ERROR, "EAP-TTLS: MSCHAPv2 not included in the build");
1137 : return -1;
1138 : #endif /* EAP_MSCHAPv2 */
1139 : }
1140 :
1141 :
1142 : #ifdef EAP_TNC
1143 2 : static int eap_ttls_process_tnc_start(struct eap_sm *sm,
1144 : struct eap_ttls_data *data,
1145 : struct eap_method_ret *ret,
1146 : struct ttls_parse_avp *parse,
1147 : struct wpabuf **resp)
1148 : {
1149 : /* TNC uses inner EAP method after non-EAP TTLS phase 2. */
1150 2 : if (parse->eapdata == NULL) {
1151 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase 2 received "
1152 : "unexpected tunneled data (no EAP)");
1153 0 : return -1;
1154 : }
1155 :
1156 2 : if (!data->ready_for_tnc) {
1157 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase 2 received "
1158 : "EAP after non-EAP, but not ready for TNC");
1159 0 : return -1;
1160 : }
1161 :
1162 2 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Start TNC after completed "
1163 : "non-EAP method");
1164 2 : data->tnc_started = 1;
1165 :
1166 2 : if (eap_ttls_process_phase2_eap(sm, data, ret, parse, resp) < 0)
1167 0 : return -1;
1168 :
1169 2 : return 0;
1170 : }
1171 : #endif /* EAP_TNC */
1172 :
1173 :
1174 156 : static int eap_ttls_process_decrypted(struct eap_sm *sm,
1175 : struct eap_ttls_data *data,
1176 : struct eap_method_ret *ret,
1177 : u8 identifier,
1178 : struct ttls_parse_avp *parse,
1179 : struct wpabuf *in_decrypted,
1180 : struct wpabuf **out_data)
1181 : {
1182 156 : struct wpabuf *resp = NULL;
1183 156 : struct eap_peer_config *config = eap_get_config(sm);
1184 : int res;
1185 156 : enum phase2_types phase2_type = data->phase2_type;
1186 :
1187 : #ifdef EAP_TNC
1188 156 : if (data->tnc_started)
1189 21 : phase2_type = EAP_TTLS_PHASE2_EAP;
1190 : #endif /* EAP_TNC */
1191 :
1192 156 : switch (phase2_type) {
1193 : case EAP_TTLS_PHASE2_EAP:
1194 68 : if (eap_ttls_process_phase2_eap(sm, data, ret, parse, &resp) <
1195 : 0)
1196 0 : return -1;
1197 68 : break;
1198 : case EAP_TTLS_PHASE2_MSCHAPV2:
1199 88 : res = eap_ttls_process_phase2_mschapv2(sm, data, ret, parse);
1200 : #ifdef EAP_TNC
1201 88 : if (res == 1 && parse->eapdata && data->phase2_success) {
1202 : /*
1203 : * TNC may be required as the next
1204 : * authentication method within the tunnel.
1205 : */
1206 2 : ret->methodState = METHOD_MAY_CONT;
1207 2 : data->ready_for_tnc = 1;
1208 2 : if (eap_ttls_process_tnc_start(sm, data, ret, parse,
1209 : &resp) == 0)
1210 2 : break;
1211 : }
1212 : #endif /* EAP_TNC */
1213 86 : return res;
1214 : case EAP_TTLS_PHASE2_MSCHAP:
1215 : case EAP_TTLS_PHASE2_PAP:
1216 : case EAP_TTLS_PHASE2_CHAP:
1217 : #ifdef EAP_TNC
1218 0 : if (eap_ttls_process_tnc_start(sm, data, ret, parse, &resp) <
1219 : 0)
1220 0 : return -1;
1221 0 : break;
1222 : #else /* EAP_TNC */
1223 : /* EAP-TTLS/{MSCHAP,PAP,CHAP} should not send any TLS tunneled
1224 : * requests to the supplicant */
1225 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase 2 received unexpected "
1226 : "tunneled data");
1227 : return -1;
1228 : #endif /* EAP_TNC */
1229 : }
1230 :
1231 70 : if (resp) {
1232 68 : if (eap_ttls_encrypt_response(sm, data, resp, identifier,
1233 : out_data) < 0)
1234 0 : return -1;
1235 4 : } else if (config->pending_req_identity ||
1236 2 : config->pending_req_password ||
1237 0 : config->pending_req_otp ||
1238 0 : config->pending_req_new_password) {
1239 2 : wpabuf_free(data->pending_phase2_req);
1240 2 : data->pending_phase2_req = wpabuf_dup(in_decrypted);
1241 : }
1242 :
1243 70 : return 0;
1244 : }
1245 :
1246 :
1247 179 : static int eap_ttls_implicit_identity_request(struct eap_sm *sm,
1248 : struct eap_ttls_data *data,
1249 : struct eap_method_ret *ret,
1250 : u8 identifier,
1251 : struct wpabuf **out_data)
1252 : {
1253 179 : int retval = 0;
1254 : struct eap_hdr *hdr;
1255 : struct wpabuf *resp;
1256 :
1257 179 : hdr = (struct eap_hdr *) eap_ttls_fake_identity_request();
1258 179 : if (hdr == NULL) {
1259 0 : ret->methodState = METHOD_DONE;
1260 0 : ret->decision = DECISION_FAIL;
1261 0 : return -1;
1262 : }
1263 :
1264 179 : resp = NULL;
1265 179 : if (eap_ttls_phase2_request(sm, data, ret, hdr, &resp)) {
1266 0 : wpa_printf(MSG_INFO, "EAP-TTLS: Phase2 Request "
1267 : "processing failed");
1268 0 : retval = -1;
1269 : } else {
1270 179 : struct eap_peer_config *config = eap_get_config(sm);
1271 184 : if (resp == NULL &&
1272 8 : (config->pending_req_identity ||
1273 3 : config->pending_req_password ||
1274 0 : config->pending_req_otp ||
1275 0 : config->pending_req_new_password)) {
1276 : /*
1277 : * Use empty buffer to force implicit request
1278 : * processing when EAP request is re-processed after
1279 : * user input.
1280 : */
1281 5 : wpabuf_free(data->pending_phase2_req);
1282 5 : data->pending_phase2_req = wpabuf_alloc(0);
1283 : }
1284 :
1285 179 : retval = eap_ttls_encrypt_response(sm, data, resp, identifier,
1286 : out_data);
1287 : }
1288 :
1289 179 : os_free(hdr);
1290 :
1291 179 : if (retval < 0) {
1292 0 : ret->methodState = METHOD_DONE;
1293 0 : ret->decision = DECISION_FAIL;
1294 : }
1295 :
1296 179 : return retval;
1297 : }
1298 :
1299 :
1300 174 : static int eap_ttls_phase2_start(struct eap_sm *sm, struct eap_ttls_data *data,
1301 : struct eap_method_ret *ret, u8 identifier,
1302 : struct wpabuf **out_data)
1303 : {
1304 174 : data->phase2_start = 0;
1305 :
1306 : /*
1307 : * EAP-TTLS does not use Phase2 on fast re-auth; this must be done only
1308 : * if TLS part was indeed resuming a previous session. Most
1309 : * Authentication Servers terminate EAP-TTLS before reaching this
1310 : * point, but some do not. Make wpa_supplicant stop phase 2 here, if
1311 : * needed.
1312 : */
1313 189 : if (data->reauth &&
1314 15 : tls_connection_resumed(sm->ssl_ctx, data->ssl.conn)) {
1315 0 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Session resumption - "
1316 : "skip phase 2");
1317 0 : *out_data = eap_peer_tls_build_ack(identifier, EAP_TYPE_TTLS,
1318 : data->ttls_version);
1319 0 : ret->methodState = METHOD_DONE;
1320 0 : ret->decision = DECISION_UNCOND_SUCC;
1321 0 : data->phase2_success = 1;
1322 0 : return 0;
1323 : }
1324 :
1325 174 : return eap_ttls_implicit_identity_request(sm, data, ret, identifier,
1326 : out_data);
1327 : }
1328 :
1329 :
1330 341 : static int eap_ttls_decrypt(struct eap_sm *sm, struct eap_ttls_data *data,
1331 : struct eap_method_ret *ret, u8 identifier,
1332 : const struct wpabuf *in_data,
1333 : struct wpabuf **out_data)
1334 : {
1335 341 : struct wpabuf *in_decrypted = NULL;
1336 341 : int retval = 0;
1337 : struct ttls_parse_avp parse;
1338 :
1339 341 : os_memset(&parse, 0, sizeof(parse));
1340 :
1341 341 : wpa_printf(MSG_DEBUG, "EAP-TTLS: received %lu bytes encrypted data for"
1342 : " Phase 2",
1343 : in_data ? (unsigned long) wpabuf_len(in_data) : 0);
1344 :
1345 341 : if (data->pending_phase2_req) {
1346 7 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Pending Phase 2 request - "
1347 : "skip decryption and use old data");
1348 : /* Clear TLS reassembly state. */
1349 7 : eap_peer_tls_reset_input(&data->ssl);
1350 :
1351 7 : in_decrypted = data->pending_phase2_req;
1352 7 : data->pending_phase2_req = NULL;
1353 7 : if (wpabuf_len(in_decrypted) == 0) {
1354 5 : wpabuf_free(in_decrypted);
1355 5 : return eap_ttls_implicit_identity_request(
1356 : sm, data, ret, identifier, out_data);
1357 : }
1358 2 : goto continue_req;
1359 : }
1360 :
1361 514 : if ((in_data == NULL || wpabuf_len(in_data) == 0) &&
1362 180 : data->phase2_start) {
1363 174 : return eap_ttls_phase2_start(sm, data, ret, identifier,
1364 : out_data);
1365 : }
1366 :
1367 160 : if (in_data == NULL || wpabuf_len(in_data) == 0) {
1368 : /* Received TLS ACK - requesting more fragments */
1369 6 : return eap_peer_tls_encrypt(sm, &data->ssl, EAP_TYPE_TTLS,
1370 : data->ttls_version,
1371 : identifier, NULL, out_data);
1372 : }
1373 :
1374 154 : retval = eap_peer_tls_decrypt(sm, &data->ssl, in_data, &in_decrypted);
1375 154 : if (retval)
1376 0 : goto done;
1377 :
1378 : continue_req:
1379 156 : data->phase2_start = 0;
1380 :
1381 156 : if (eap_ttls_parse_avps(in_decrypted, &parse) < 0) {
1382 0 : retval = -1;
1383 0 : goto done;
1384 : }
1385 :
1386 156 : retval = eap_ttls_process_decrypted(sm, data, ret, identifier,
1387 : &parse, in_decrypted, out_data);
1388 :
1389 : done:
1390 156 : wpabuf_free(in_decrypted);
1391 156 : os_free(parse.eapdata);
1392 :
1393 156 : if (retval < 0) {
1394 0 : ret->methodState = METHOD_DONE;
1395 0 : ret->decision = DECISION_FAIL;
1396 : }
1397 :
1398 156 : return retval;
1399 : }
1400 :
1401 :
1402 804 : static int eap_ttls_process_handshake(struct eap_sm *sm,
1403 : struct eap_ttls_data *data,
1404 : struct eap_method_ret *ret,
1405 : u8 identifier,
1406 : const struct wpabuf *in_data,
1407 : struct wpabuf **out_data)
1408 : {
1409 : int res;
1410 :
1411 804 : res = eap_peer_tls_process_helper(sm, &data->ssl, EAP_TYPE_TTLS,
1412 : data->ttls_version, identifier,
1413 : in_data, out_data);
1414 804 : if (res < 0) {
1415 20 : wpa_printf(MSG_DEBUG, "EAP-TTLS: TLS processing failed");
1416 20 : ret->methodState = METHOD_DONE;
1417 20 : ret->decision = DECISION_FAIL;
1418 20 : return -1;
1419 : }
1420 :
1421 784 : if (tls_connection_established(sm->ssl_ctx, data->ssl.conn)) {
1422 179 : wpa_printf(MSG_DEBUG, "EAP-TTLS: TLS done, proceed to "
1423 : "Phase 2");
1424 179 : if (data->resuming) {
1425 20 : wpa_printf(MSG_DEBUG, "EAP-TTLS: fast reauth - may "
1426 : "skip Phase 2");
1427 20 : ret->decision = DECISION_COND_SUCC;
1428 20 : ret->methodState = METHOD_MAY_CONT;
1429 : }
1430 179 : data->phase2_start = 1;
1431 179 : eap_ttls_v0_derive_key(sm, data);
1432 :
1433 179 : if (*out_data == NULL || wpabuf_len(*out_data) == 0) {
1434 174 : if (eap_ttls_decrypt(sm, data, ret, identifier,
1435 : NULL, out_data)) {
1436 0 : wpa_printf(MSG_WARNING, "EAP-TTLS: "
1437 : "failed to process early "
1438 : "start for Phase 2");
1439 : }
1440 174 : res = 0;
1441 : }
1442 179 : data->resuming = 0;
1443 : }
1444 :
1445 784 : if (res == 2) {
1446 : /*
1447 : * Application data included in the handshake message.
1448 : */
1449 0 : wpabuf_free(data->pending_phase2_req);
1450 0 : data->pending_phase2_req = *out_data;
1451 0 : *out_data = NULL;
1452 0 : res = eap_ttls_decrypt(sm, data, ret, identifier, in_data,
1453 : out_data);
1454 : }
1455 :
1456 784 : return res;
1457 : }
1458 :
1459 :
1460 971 : static void eap_ttls_check_auth_status(struct eap_sm *sm,
1461 : struct eap_ttls_data *data,
1462 : struct eap_method_ret *ret)
1463 : {
1464 971 : if (ret->methodState == METHOD_DONE) {
1465 182 : ret->allowNotifications = FALSE;
1466 272 : if (ret->decision == DECISION_UNCOND_SUCC ||
1467 90 : ret->decision == DECISION_COND_SUCC) {
1468 160 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Authentication "
1469 : "completed successfully");
1470 160 : data->phase2_success = 1;
1471 : #ifdef EAP_TNC
1472 160 : if (!data->ready_for_tnc && !data->tnc_started) {
1473 : /*
1474 : * TNC may be required as the next
1475 : * authentication method within the tunnel.
1476 : */
1477 160 : ret->methodState = METHOD_MAY_CONT;
1478 160 : data->ready_for_tnc = 1;
1479 : }
1480 : #endif /* EAP_TNC */
1481 : }
1482 1578 : } else if (ret->methodState == METHOD_MAY_CONT &&
1483 1576 : (ret->decision == DECISION_UNCOND_SUCC ||
1484 787 : ret->decision == DECISION_COND_SUCC)) {
1485 15 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Authentication "
1486 : "completed successfully (MAY_CONT)");
1487 15 : data->phase2_success = 1;
1488 : }
1489 971 : }
1490 :
1491 :
1492 971 : static struct wpabuf * eap_ttls_process(struct eap_sm *sm, void *priv,
1493 : struct eap_method_ret *ret,
1494 : const struct wpabuf *reqData)
1495 : {
1496 : size_t left;
1497 : int res;
1498 : u8 flags, id;
1499 : struct wpabuf *resp;
1500 : const u8 *pos;
1501 971 : struct eap_ttls_data *data = priv;
1502 : struct wpabuf msg;
1503 :
1504 971 : pos = eap_peer_tls_process_init(sm, &data->ssl, EAP_TYPE_TTLS, ret,
1505 : reqData, &left, &flags);
1506 971 : if (pos == NULL)
1507 0 : return NULL;
1508 971 : id = eap_get_id(reqData);
1509 :
1510 971 : if (flags & EAP_TLS_FLAGS_START) {
1511 205 : wpa_printf(MSG_DEBUG, "EAP-TTLS: Start (server ver=%d, own "
1512 : "ver=%d)", flags & EAP_TLS_VERSION_MASK,
1513 : data->ttls_version);
1514 :
1515 : /* RFC 5281, Ch. 9.2:
1516 : * "This packet MAY contain additional information in the form
1517 : * of AVPs, which may provide useful hints to the client"
1518 : * For now, ignore any potential extra data.
1519 : */
1520 205 : left = 0;
1521 : }
1522 :
1523 971 : wpabuf_set(&msg, pos, left);
1524 :
1525 971 : resp = NULL;
1526 1138 : if (tls_connection_established(sm->ssl_ctx, data->ssl.conn) &&
1527 167 : !data->resuming) {
1528 167 : res = eap_ttls_decrypt(sm, data, ret, id, &msg, &resp);
1529 : } else {
1530 804 : res = eap_ttls_process_handshake(sm, data, ret, id,
1531 : &msg, &resp);
1532 : }
1533 :
1534 971 : eap_ttls_check_auth_status(sm, data, ret);
1535 :
1536 : /* FIX: what about res == -1? Could just move all error processing into
1537 : * the other functions and get rid of this res==1 case here. */
1538 971 : if (res == 1) {
1539 260 : wpabuf_free(resp);
1540 260 : return eap_peer_tls_build_ack(id, EAP_TYPE_TTLS,
1541 : data->ttls_version);
1542 : }
1543 711 : return resp;
1544 : }
1545 :
1546 :
1547 51 : static Boolean eap_ttls_has_reauth_data(struct eap_sm *sm, void *priv)
1548 : {
1549 51 : struct eap_ttls_data *data = priv;
1550 102 : return tls_connection_established(sm->ssl_ctx, data->ssl.conn) &&
1551 51 : data->phase2_success;
1552 : }
1553 :
1554 :
1555 26 : static void eap_ttls_deinit_for_reauth(struct eap_sm *sm, void *priv)
1556 : {
1557 26 : struct eap_ttls_data *data = priv;
1558 26 : wpabuf_free(data->pending_phase2_req);
1559 26 : data->pending_phase2_req = NULL;
1560 : #ifdef EAP_TNC
1561 26 : data->ready_for_tnc = 0;
1562 26 : data->tnc_started = 0;
1563 : #endif /* EAP_TNC */
1564 26 : }
1565 :
1566 :
1567 20 : static void * eap_ttls_init_for_reauth(struct eap_sm *sm, void *priv)
1568 : {
1569 20 : struct eap_ttls_data *data = priv;
1570 20 : eap_ttls_free_key(data);
1571 20 : os_free(data->session_id);
1572 20 : data->session_id = NULL;
1573 20 : if (eap_peer_tls_reauth_init(sm, &data->ssl)) {
1574 0 : os_free(data);
1575 0 : return NULL;
1576 : }
1577 24 : if (data->phase2_priv && data->phase2_method &&
1578 4 : data->phase2_method->init_for_reauth)
1579 0 : data->phase2_method->init_for_reauth(sm, data->phase2_priv);
1580 20 : data->phase2_start = 0;
1581 20 : data->phase2_success = 0;
1582 20 : data->resuming = 1;
1583 20 : data->reauth = 1;
1584 20 : return priv;
1585 : }
1586 :
1587 :
1588 111 : static int eap_ttls_get_status(struct eap_sm *sm, void *priv, char *buf,
1589 : size_t buflen, int verbose)
1590 : {
1591 111 : struct eap_ttls_data *data = priv;
1592 : int len, ret;
1593 :
1594 111 : len = eap_peer_tls_status(sm, &data->ssl, buf, buflen, verbose);
1595 111 : ret = os_snprintf(buf + len, buflen - len,
1596 : "EAP-TTLSv%d Phase2 method=",
1597 : data->ttls_version);
1598 111 : if (os_snprintf_error(buflen - len, ret))
1599 0 : return len;
1600 111 : len += ret;
1601 111 : switch (data->phase2_type) {
1602 : case EAP_TTLS_PHASE2_EAP:
1603 30 : ret = os_snprintf(buf + len, buflen - len, "EAP-%s\n",
1604 15 : data->phase2_method ?
1605 15 : data->phase2_method->name : "?");
1606 15 : break;
1607 : case EAP_TTLS_PHASE2_MSCHAPV2:
1608 52 : ret = os_snprintf(buf + len, buflen - len, "MSCHAPV2\n");
1609 52 : break;
1610 : case EAP_TTLS_PHASE2_MSCHAP:
1611 8 : ret = os_snprintf(buf + len, buflen - len, "MSCHAP\n");
1612 8 : break;
1613 : case EAP_TTLS_PHASE2_PAP:
1614 27 : ret = os_snprintf(buf + len, buflen - len, "PAP\n");
1615 27 : break;
1616 : case EAP_TTLS_PHASE2_CHAP:
1617 9 : ret = os_snprintf(buf + len, buflen - len, "CHAP\n");
1618 9 : break;
1619 : default:
1620 0 : ret = 0;
1621 0 : break;
1622 : }
1623 111 : if (os_snprintf_error(buflen - len, ret))
1624 0 : return len;
1625 111 : len += ret;
1626 :
1627 111 : return len;
1628 : }
1629 :
1630 :
1631 971 : static Boolean eap_ttls_isKeyAvailable(struct eap_sm *sm, void *priv)
1632 : {
1633 971 : struct eap_ttls_data *data = priv;
1634 971 : return data->key_data != NULL && data->phase2_success;
1635 : }
1636 :
1637 :
1638 205 : static u8 * eap_ttls_getKey(struct eap_sm *sm, void *priv, size_t *len)
1639 : {
1640 205 : struct eap_ttls_data *data = priv;
1641 : u8 *key;
1642 :
1643 205 : if (data->key_data == NULL || !data->phase2_success)
1644 0 : return NULL;
1645 :
1646 205 : key = os_malloc(EAP_TLS_KEY_LEN);
1647 205 : if (key == NULL)
1648 0 : return NULL;
1649 :
1650 205 : *len = EAP_TLS_KEY_LEN;
1651 205 : os_memcpy(key, data->key_data, EAP_TLS_KEY_LEN);
1652 :
1653 205 : return key;
1654 : }
1655 :
1656 :
1657 205 : static u8 * eap_ttls_get_session_id(struct eap_sm *sm, void *priv, size_t *len)
1658 : {
1659 205 : struct eap_ttls_data *data = priv;
1660 : u8 *id;
1661 :
1662 205 : if (data->session_id == NULL || !data->phase2_success)
1663 0 : return NULL;
1664 :
1665 205 : id = os_malloc(data->id_len);
1666 205 : if (id == NULL)
1667 0 : return NULL;
1668 :
1669 205 : *len = data->id_len;
1670 205 : os_memcpy(id, data->session_id, data->id_len);
1671 :
1672 205 : return id;
1673 : }
1674 :
1675 :
1676 2 : static u8 * eap_ttls_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
1677 : {
1678 2 : struct eap_ttls_data *data = priv;
1679 : u8 *key;
1680 :
1681 2 : if (data->key_data == NULL)
1682 0 : return NULL;
1683 :
1684 2 : key = os_malloc(EAP_EMSK_LEN);
1685 2 : if (key == NULL)
1686 0 : return NULL;
1687 :
1688 2 : *len = EAP_EMSK_LEN;
1689 2 : os_memcpy(key, data->key_data + EAP_TLS_KEY_LEN, EAP_EMSK_LEN);
1690 :
1691 2 : return key;
1692 : }
1693 :
1694 :
1695 49 : int eap_peer_ttls_register(void)
1696 : {
1697 : struct eap_method *eap;
1698 : int ret;
1699 :
1700 49 : eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
1701 : EAP_VENDOR_IETF, EAP_TYPE_TTLS, "TTLS");
1702 49 : if (eap == NULL)
1703 0 : return -1;
1704 :
1705 49 : eap->init = eap_ttls_init;
1706 49 : eap->deinit = eap_ttls_deinit;
1707 49 : eap->process = eap_ttls_process;
1708 49 : eap->isKeyAvailable = eap_ttls_isKeyAvailable;
1709 49 : eap->getKey = eap_ttls_getKey;
1710 49 : eap->getSessionId = eap_ttls_get_session_id;
1711 49 : eap->get_status = eap_ttls_get_status;
1712 49 : eap->has_reauth_data = eap_ttls_has_reauth_data;
1713 49 : eap->deinit_for_reauth = eap_ttls_deinit_for_reauth;
1714 49 : eap->init_for_reauth = eap_ttls_init_for_reauth;
1715 49 : eap->get_emsk = eap_ttls_get_emsk;
1716 :
1717 49 : ret = eap_peer_method_register(eap);
1718 49 : if (ret)
1719 0 : eap_peer_method_free(eap);
1720 49 : return ret;
1721 : }
|
