Line data Source code
1 : /*
2 : * EAP peer method: EAP-PAX (RFC 4746)
3 : * Copyright (c) 2005-2008, 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/random.h"
13 : #include "eap_common/eap_pax_common.h"
14 : #include "eap_i.h"
15 :
16 : /*
17 : * Note: only PAX_STD subprotocol is currently supported
18 : *
19 : * TODO: Add support with PAX_SEC with the mandatory to implement ciphersuite
20 : * (HMAC_SHA1_128, IANA DH Group 14 (2048 bits), RSA-PKCS1-V1_5) and
21 : * recommended ciphersuite (HMAC_SHA256_128, IANA DH Group 15 (3072 bits),
22 : * RSAES-OAEP).
23 : */
24 :
25 : struct eap_pax_data {
26 : enum { PAX_INIT, PAX_STD_2_SENT, PAX_DONE } state;
27 : u8 mac_id, dh_group_id, public_key_id;
28 : union {
29 : u8 e[2 * EAP_PAX_RAND_LEN];
30 : struct {
31 : u8 x[EAP_PAX_RAND_LEN]; /* server rand */
32 : u8 y[EAP_PAX_RAND_LEN]; /* client rand */
33 : } r;
34 : } rand;
35 : char *cid;
36 : size_t cid_len;
37 : u8 ak[EAP_PAX_AK_LEN];
38 : u8 mk[EAP_PAX_MK_LEN];
39 : u8 ck[EAP_PAX_CK_LEN];
40 : u8 ick[EAP_PAX_ICK_LEN];
41 : u8 mid[EAP_PAX_MID_LEN];
42 : };
43 :
44 :
45 : static void eap_pax_deinit(struct eap_sm *sm, void *priv);
46 :
47 :
48 47 : static void * eap_pax_init(struct eap_sm *sm)
49 : {
50 : struct eap_pax_data *data;
51 : const u8 *identity, *password;
52 : size_t identity_len, password_len;
53 :
54 47 : identity = eap_get_config_identity(sm, &identity_len);
55 47 : password = eap_get_config_password(sm, &password_len);
56 47 : if (!identity || !password) {
57 1 : wpa_printf(MSG_INFO, "EAP-PAX: CID (nai) or key (password) "
58 : "not configured");
59 1 : return NULL;
60 : }
61 :
62 46 : if (password_len != EAP_PAX_AK_LEN) {
63 1 : wpa_printf(MSG_INFO, "EAP-PAX: Invalid PSK length");
64 1 : return NULL;
65 : }
66 :
67 45 : data = os_zalloc(sizeof(*data));
68 45 : if (data == NULL)
69 0 : return NULL;
70 45 : data->state = PAX_INIT;
71 :
72 45 : data->cid = os_malloc(identity_len);
73 45 : if (data->cid == NULL) {
74 0 : eap_pax_deinit(sm, data);
75 0 : return NULL;
76 : }
77 45 : os_memcpy(data->cid, identity, identity_len);
78 45 : data->cid_len = identity_len;
79 :
80 45 : os_memcpy(data->ak, password, EAP_PAX_AK_LEN);
81 :
82 45 : return data;
83 : }
84 :
85 :
86 45 : static void eap_pax_deinit(struct eap_sm *sm, void *priv)
87 : {
88 45 : struct eap_pax_data *data = priv;
89 45 : os_free(data->cid);
90 45 : bin_clear_free(data, sizeof(*data));
91 45 : }
92 :
93 :
94 58 : static struct wpabuf * eap_pax_alloc_resp(const struct eap_pax_hdr *req,
95 : u8 id, u8 op_code, size_t plen)
96 : {
97 : struct wpabuf *resp;
98 : struct eap_pax_hdr *pax;
99 :
100 58 : resp = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_PAX,
101 : sizeof(*pax) + plen, EAP_CODE_RESPONSE, id);
102 58 : if (resp == NULL)
103 0 : return NULL;
104 :
105 58 : pax = wpabuf_put(resp, sizeof(*pax));
106 58 : pax->op_code = op_code;
107 58 : pax->flags = 0;
108 58 : pax->mac_id = req->mac_id;
109 58 : pax->dh_group_id = req->dh_group_id;
110 58 : pax->public_key_id = req->public_key_id;
111 :
112 58 : return resp;
113 : }
114 :
115 :
116 36 : static struct wpabuf * eap_pax_process_std_1(struct eap_pax_data *data,
117 : struct eap_method_ret *ret, u8 id,
118 : const struct eap_pax_hdr *req,
119 : size_t req_plen)
120 : {
121 : struct wpabuf *resp;
122 : const u8 *pos;
123 : u8 *rpos;
124 : size_t left, plen;
125 :
126 36 : wpa_printf(MSG_DEBUG, "EAP-PAX: PAX_STD-1 (received)");
127 :
128 36 : if (data->state != PAX_INIT) {
129 1 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-1 received in "
130 1 : "unexpected state (%d) - ignored", data->state);
131 1 : ret->ignore = TRUE;
132 1 : return NULL;
133 : }
134 :
135 35 : if (req->flags & EAP_PAX_FLAGS_CE) {
136 1 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-1 with CE flag set - "
137 : "ignored");
138 1 : ret->ignore = TRUE;
139 1 : return NULL;
140 : }
141 :
142 34 : left = req_plen - sizeof(*req);
143 :
144 34 : if (left < 2 + EAP_PAX_RAND_LEN) {
145 1 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-1 with too short "
146 : "payload");
147 1 : ret->ignore = TRUE;
148 1 : return NULL;
149 : }
150 :
151 33 : pos = (const u8 *) (req + 1);
152 33 : if (WPA_GET_BE16(pos) != EAP_PAX_RAND_LEN) {
153 1 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-1 with incorrect A "
154 : "length %d (expected %d)",
155 1 : WPA_GET_BE16(pos), EAP_PAX_RAND_LEN);
156 1 : ret->ignore = TRUE;
157 1 : return NULL;
158 : }
159 :
160 32 : pos += 2;
161 32 : left -= 2;
162 32 : os_memcpy(data->rand.r.x, pos, EAP_PAX_RAND_LEN);
163 32 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: X (server rand)",
164 32 : data->rand.r.x, EAP_PAX_RAND_LEN);
165 32 : pos += EAP_PAX_RAND_LEN;
166 32 : left -= EAP_PAX_RAND_LEN;
167 :
168 32 : if (left > 0) {
169 1 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ignored extra payload",
170 : pos, left);
171 : }
172 :
173 32 : if (random_get_bytes(data->rand.r.y, EAP_PAX_RAND_LEN)) {
174 0 : wpa_printf(MSG_ERROR, "EAP-PAX: Failed to get random data");
175 0 : ret->ignore = TRUE;
176 0 : return NULL;
177 : }
178 32 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: Y (client rand)",
179 32 : data->rand.r.y, EAP_PAX_RAND_LEN);
180 :
181 32 : if (eap_pax_initial_key_derivation(req->mac_id, data->ak, data->rand.e,
182 32 : data->mk, data->ck, data->ick,
183 32 : data->mid) < 0) {
184 0 : ret->ignore = TRUE;
185 0 : return NULL;
186 : }
187 :
188 32 : wpa_printf(MSG_DEBUG, "EAP-PAX: PAX_STD-2 (sending)");
189 :
190 32 : plen = 2 + EAP_PAX_RAND_LEN + 2 + data->cid_len + 2 + EAP_PAX_MAC_LEN +
191 : EAP_PAX_ICV_LEN;
192 32 : resp = eap_pax_alloc_resp(req, id, EAP_PAX_OP_STD_2, plen);
193 32 : if (resp == NULL)
194 0 : return NULL;
195 :
196 32 : wpabuf_put_be16(resp, EAP_PAX_RAND_LEN);
197 32 : wpabuf_put_data(resp, data->rand.r.y, EAP_PAX_RAND_LEN);
198 32 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: B = Y (client rand)",
199 32 : data->rand.r.y, EAP_PAX_RAND_LEN);
200 :
201 32 : wpabuf_put_be16(resp, data->cid_len);
202 32 : wpabuf_put_data(resp, data->cid, data->cid_len);
203 64 : wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-PAX: CID",
204 32 : (u8 *) data->cid, data->cid_len);
205 :
206 32 : wpabuf_put_be16(resp, EAP_PAX_MAC_LEN);
207 32 : rpos = wpabuf_put(resp, EAP_PAX_MAC_LEN);
208 64 : eap_pax_mac(req->mac_id, data->ck, EAP_PAX_CK_LEN,
209 32 : data->rand.r.x, EAP_PAX_RAND_LEN,
210 32 : data->rand.r.y, EAP_PAX_RAND_LEN,
211 32 : (u8 *) data->cid, data->cid_len, rpos);
212 32 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: MAC_CK(A, B, CID)",
213 : rpos, EAP_PAX_MAC_LEN);
214 :
215 : /* Optional ADE could be added here, if needed */
216 :
217 32 : rpos = wpabuf_put(resp, EAP_PAX_ICV_LEN);
218 64 : eap_pax_mac(req->mac_id, data->ick, EAP_PAX_ICK_LEN,
219 64 : wpabuf_head(resp), wpabuf_len(resp) - EAP_PAX_ICV_LEN,
220 : NULL, 0, NULL, 0, rpos);
221 32 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", rpos, EAP_PAX_ICV_LEN);
222 :
223 32 : data->state = PAX_STD_2_SENT;
224 32 : data->mac_id = req->mac_id;
225 32 : data->dh_group_id = req->dh_group_id;
226 32 : data->public_key_id = req->public_key_id;
227 :
228 32 : return resp;
229 : }
230 :
231 :
232 27 : static struct wpabuf * eap_pax_process_std_3(struct eap_pax_data *data,
233 : struct eap_method_ret *ret, u8 id,
234 : const struct eap_pax_hdr *req,
235 : size_t req_plen)
236 : {
237 : struct wpabuf *resp;
238 : u8 *rpos, mac[EAP_PAX_MAC_LEN];
239 : const u8 *pos;
240 : size_t left;
241 :
242 27 : wpa_printf(MSG_DEBUG, "EAP-PAX: PAX_STD-3 (received)");
243 :
244 27 : if (data->state != PAX_STD_2_SENT) {
245 1 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-3 received in "
246 1 : "unexpected state (%d) - ignored", data->state);
247 1 : ret->ignore = TRUE;
248 1 : return NULL;
249 : }
250 :
251 26 : if (req->flags & EAP_PAX_FLAGS_CE) {
252 0 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-3 with CE flag set - "
253 : "ignored");
254 0 : ret->ignore = TRUE;
255 0 : return NULL;
256 : }
257 :
258 26 : left = req_plen - sizeof(*req);
259 :
260 26 : if (left < 2 + EAP_PAX_MAC_LEN) {
261 0 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-3 with too short "
262 : "payload");
263 0 : ret->ignore = TRUE;
264 0 : return NULL;
265 : }
266 :
267 26 : pos = (const u8 *) (req + 1);
268 26 : if (WPA_GET_BE16(pos) != EAP_PAX_MAC_LEN) {
269 0 : wpa_printf(MSG_INFO, "EAP-PAX: PAX_STD-3 with incorrect "
270 : "MAC_CK length %d (expected %d)",
271 0 : WPA_GET_BE16(pos), EAP_PAX_MAC_LEN);
272 0 : ret->ignore = TRUE;
273 0 : return NULL;
274 : }
275 26 : pos += 2;
276 26 : left -= 2;
277 26 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: MAC_CK(B, CID)",
278 : pos, EAP_PAX_MAC_LEN);
279 52 : eap_pax_mac(data->mac_id, data->ck, EAP_PAX_CK_LEN,
280 26 : data->rand.r.y, EAP_PAX_RAND_LEN,
281 26 : (u8 *) data->cid, data->cid_len, NULL, 0, mac);
282 26 : if (os_memcmp_const(pos, mac, EAP_PAX_MAC_LEN) != 0) {
283 0 : wpa_printf(MSG_INFO, "EAP-PAX: Invalid MAC_CK(B, CID) "
284 : "received");
285 0 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: expected MAC_CK(B, CID)",
286 : mac, EAP_PAX_MAC_LEN);
287 0 : ret->methodState = METHOD_DONE;
288 0 : ret->decision = DECISION_FAIL;
289 0 : return NULL;
290 : }
291 :
292 26 : pos += EAP_PAX_MAC_LEN;
293 26 : left -= EAP_PAX_MAC_LEN;
294 :
295 26 : if (left > 0) {
296 0 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ignored extra payload",
297 : pos, left);
298 : }
299 :
300 26 : wpa_printf(MSG_DEBUG, "EAP-PAX: PAX-ACK (sending)");
301 :
302 26 : resp = eap_pax_alloc_resp(req, id, EAP_PAX_OP_ACK, EAP_PAX_ICV_LEN);
303 26 : if (resp == NULL)
304 0 : return NULL;
305 :
306 : /* Optional ADE could be added here, if needed */
307 :
308 26 : rpos = wpabuf_put(resp, EAP_PAX_ICV_LEN);
309 52 : eap_pax_mac(data->mac_id, data->ick, EAP_PAX_ICK_LEN,
310 52 : wpabuf_head(resp), wpabuf_len(resp) - EAP_PAX_ICV_LEN,
311 : NULL, 0, NULL, 0, rpos);
312 26 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", rpos, EAP_PAX_ICV_LEN);
313 :
314 26 : data->state = PAX_DONE;
315 26 : ret->methodState = METHOD_DONE;
316 26 : ret->decision = DECISION_UNCOND_SUCC;
317 26 : ret->allowNotifications = FALSE;
318 :
319 26 : return resp;
320 : }
321 :
322 :
323 76 : static struct wpabuf * eap_pax_process(struct eap_sm *sm, void *priv,
324 : struct eap_method_ret *ret,
325 : const struct wpabuf *reqData)
326 : {
327 76 : struct eap_pax_data *data = priv;
328 : const struct eap_pax_hdr *req;
329 : struct wpabuf *resp;
330 : u8 icvbuf[EAP_PAX_ICV_LEN], id;
331 : const u8 *icv, *pos;
332 : size_t len;
333 : u16 flen, mlen;
334 :
335 76 : pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_PAX, reqData, &len);
336 76 : if (pos == NULL || len < EAP_PAX_ICV_LEN) {
337 1 : ret->ignore = TRUE;
338 1 : return NULL;
339 : }
340 75 : id = eap_get_id(reqData);
341 75 : req = (const struct eap_pax_hdr *) pos;
342 75 : flen = len - EAP_PAX_ICV_LEN;
343 75 : mlen = wpabuf_len(reqData) - EAP_PAX_ICV_LEN;
344 :
345 375 : wpa_printf(MSG_DEBUG, "EAP-PAX: received frame: op_code 0x%x "
346 : "flags 0x%x mac_id 0x%x dh_group_id 0x%x "
347 : "public_key_id 0x%x",
348 300 : req->op_code, req->flags, req->mac_id, req->dh_group_id,
349 75 : req->public_key_id);
350 75 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: received payload",
351 : pos, len - EAP_PAX_ICV_LEN);
352 :
353 75 : if (data->state != PAX_INIT && data->mac_id != req->mac_id) {
354 2 : wpa_printf(MSG_INFO, "EAP-PAX: MAC ID changed during "
355 : "authentication (was 0x%d, is 0x%d)",
356 2 : data->mac_id, req->mac_id);
357 1 : ret->ignore = TRUE;
358 1 : return NULL;
359 : }
360 :
361 74 : if (data->state != PAX_INIT && data->dh_group_id != req->dh_group_id) {
362 2 : wpa_printf(MSG_INFO, "EAP-PAX: DH Group ID changed during "
363 : "authentication (was 0x%d, is 0x%d)",
364 2 : data->dh_group_id, req->dh_group_id);
365 1 : ret->ignore = TRUE;
366 1 : return NULL;
367 : }
368 :
369 102 : if (data->state != PAX_INIT &&
370 29 : data->public_key_id != req->public_key_id) {
371 2 : wpa_printf(MSG_INFO, "EAP-PAX: Public Key ID changed during "
372 : "authentication (was 0x%d, is 0x%d)",
373 2 : data->public_key_id, req->public_key_id);
374 1 : ret->ignore = TRUE;
375 1 : return NULL;
376 : }
377 :
378 : /* TODO: add support EAP_PAX_HMAC_SHA256_128 */
379 72 : if (req->mac_id != EAP_PAX_MAC_HMAC_SHA1_128) {
380 2 : wpa_printf(MSG_INFO, "EAP-PAX: Unsupported MAC ID 0x%x",
381 2 : req->mac_id);
382 2 : ret->ignore = TRUE;
383 2 : return NULL;
384 : }
385 :
386 70 : if (req->dh_group_id != EAP_PAX_DH_GROUP_NONE) {
387 1 : wpa_printf(MSG_INFO, "EAP-PAX: Unsupported DH Group ID 0x%x",
388 1 : req->dh_group_id);
389 1 : ret->ignore = TRUE;
390 1 : return NULL;
391 : }
392 :
393 69 : if (req->public_key_id != EAP_PAX_PUBLIC_KEY_NONE) {
394 1 : wpa_printf(MSG_INFO, "EAP-PAX: Unsupported Public Key ID 0x%x",
395 1 : req->public_key_id);
396 1 : ret->ignore = TRUE;
397 1 : return NULL;
398 : }
399 :
400 68 : if (req->flags & EAP_PAX_FLAGS_MF) {
401 : /* TODO: add support for reassembling fragments */
402 1 : wpa_printf(MSG_INFO, "EAP-PAX: fragmentation not supported - "
403 : "ignored packet");
404 1 : ret->ignore = TRUE;
405 1 : return NULL;
406 : }
407 :
408 67 : icv = pos + len - EAP_PAX_ICV_LEN;
409 67 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: ICV", icv, EAP_PAX_ICV_LEN);
410 67 : if (req->op_code == EAP_PAX_OP_STD_1) {
411 76 : eap_pax_mac(req->mac_id, (u8 *) "", 0,
412 38 : wpabuf_head(reqData), mlen, NULL, 0, NULL, 0,
413 : icvbuf);
414 : } else {
415 58 : eap_pax_mac(req->mac_id, data->ick, EAP_PAX_ICK_LEN,
416 29 : wpabuf_head(reqData), mlen, NULL, 0, NULL, 0,
417 : icvbuf);
418 : }
419 67 : if (os_memcmp_const(icv, icvbuf, EAP_PAX_ICV_LEN) != 0) {
420 3 : wpa_printf(MSG_DEBUG, "EAP-PAX: invalid ICV - ignoring the "
421 : "message");
422 3 : wpa_hexdump(MSG_MSGDUMP, "EAP-PAX: expected ICV",
423 : icvbuf, EAP_PAX_ICV_LEN);
424 3 : ret->ignore = TRUE;
425 3 : return NULL;
426 : }
427 :
428 64 : ret->ignore = FALSE;
429 64 : ret->methodState = METHOD_MAY_CONT;
430 64 : ret->decision = DECISION_FAIL;
431 64 : ret->allowNotifications = TRUE;
432 :
433 64 : switch (req->op_code) {
434 : case EAP_PAX_OP_STD_1:
435 36 : resp = eap_pax_process_std_1(data, ret, id, req, flen);
436 36 : break;
437 : case EAP_PAX_OP_STD_3:
438 27 : resp = eap_pax_process_std_3(data, ret, id, req, flen);
439 27 : break;
440 : default:
441 1 : wpa_printf(MSG_DEBUG, "EAP-PAX: ignoring message with unknown "
442 1 : "op_code %d", req->op_code);
443 1 : ret->ignore = TRUE;
444 1 : return NULL;
445 : }
446 :
447 63 : if (ret->methodState == METHOD_DONE) {
448 26 : ret->allowNotifications = FALSE;
449 : }
450 :
451 63 : return resp;
452 : }
453 :
454 :
455 58 : static Boolean eap_pax_isKeyAvailable(struct eap_sm *sm, void *priv)
456 : {
457 58 : struct eap_pax_data *data = priv;
458 58 : return data->state == PAX_DONE;
459 : }
460 :
461 :
462 26 : static u8 * eap_pax_getKey(struct eap_sm *sm, void *priv, size_t *len)
463 : {
464 26 : struct eap_pax_data *data = priv;
465 : u8 *key;
466 :
467 26 : if (data->state != PAX_DONE)
468 0 : return NULL;
469 :
470 26 : key = os_malloc(EAP_MSK_LEN);
471 26 : if (key == NULL)
472 0 : return NULL;
473 :
474 26 : *len = EAP_MSK_LEN;
475 26 : eap_pax_kdf(data->mac_id, data->mk, EAP_PAX_MK_LEN,
476 26 : "Master Session Key", data->rand.e, 2 * EAP_PAX_RAND_LEN,
477 : EAP_MSK_LEN, key);
478 :
479 26 : return key;
480 : }
481 :
482 :
483 1 : static u8 * eap_pax_get_emsk(struct eap_sm *sm, void *priv, size_t *len)
484 : {
485 1 : struct eap_pax_data *data = priv;
486 : u8 *key;
487 :
488 1 : if (data->state != PAX_DONE)
489 0 : return NULL;
490 :
491 1 : key = os_malloc(EAP_EMSK_LEN);
492 1 : if (key == NULL)
493 0 : return NULL;
494 :
495 1 : *len = EAP_EMSK_LEN;
496 1 : eap_pax_kdf(data->mac_id, data->mk, EAP_PAX_MK_LEN,
497 : "Extended Master Session Key",
498 1 : data->rand.e, 2 * EAP_PAX_RAND_LEN,
499 : EAP_EMSK_LEN, key);
500 :
501 1 : return key;
502 : }
503 :
504 :
505 26 : static u8 * eap_pax_get_session_id(struct eap_sm *sm, void *priv, size_t *len)
506 : {
507 26 : struct eap_pax_data *data = priv;
508 : u8 *sid;
509 :
510 26 : if (data->state != PAX_DONE)
511 0 : return NULL;
512 :
513 26 : sid = os_malloc(1 + EAP_PAX_MID_LEN);
514 26 : if (sid == NULL)
515 0 : return NULL;
516 :
517 26 : *len = 1 + EAP_PAX_MID_LEN;
518 26 : sid[0] = EAP_TYPE_PAX;
519 26 : os_memcpy(sid + 1, data->mid, EAP_PAX_MID_LEN);
520 :
521 26 : return sid;
522 : }
523 :
524 :
525 30 : int eap_peer_pax_register(void)
526 : {
527 : struct eap_method *eap;
528 : int ret;
529 :
530 30 : eap = eap_peer_method_alloc(EAP_PEER_METHOD_INTERFACE_VERSION,
531 : EAP_VENDOR_IETF, EAP_TYPE_PAX, "PAX");
532 30 : if (eap == NULL)
533 0 : return -1;
534 :
535 30 : eap->init = eap_pax_init;
536 30 : eap->deinit = eap_pax_deinit;
537 30 : eap->process = eap_pax_process;
538 30 : eap->isKeyAvailable = eap_pax_isKeyAvailable;
539 30 : eap->getKey = eap_pax_getKey;
540 30 : eap->get_emsk = eap_pax_get_emsk;
541 30 : eap->getSessionId = eap_pax_get_session_id;
542 :
543 30 : ret = eap_peer_method_register(eap);
544 30 : if (ret)
545 0 : eap_peer_method_free(eap);
546 30 : return ret;
547 : }
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