Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / radius / radius_server.c
CommitLineData
ebfa2275 1/*
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2 * RADIUS authentication server
3 * Copyright (c) 2005-2009, 2011, Jouni Malinen <j@w1.fi>
ebfa2275 4 *
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5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
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7 */
8
9#include "includes.h"
10#include <net/if.h>
11
12#include "common.h"
13#include "radius.h"
14#include "eloop.h"
a875087d 15#include "eap_server/eap.h"
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16#include "radius_server.h"
17
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18/**
19 * RADIUS_SESSION_TIMEOUT - Session timeout in seconds
20 */
ebfa2275 21#define RADIUS_SESSION_TIMEOUT 60
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22
23/**
24 * RADIUS_MAX_SESSION - Maximum number of active sessions
25 */
ebfa2275 26#define RADIUS_MAX_SESSION 100
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27
28/**
29 * RADIUS_MAX_MSG_LEN - Maximum message length for incoming RADIUS messages
30 */
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31#define RADIUS_MAX_MSG_LEN 3000
32
33static struct eapol_callbacks radius_server_eapol_cb;
34
35struct radius_client;
36struct radius_server_data;
37
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38/**
39 * struct radius_server_counters - RADIUS server statistics counters
40 */
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41struct radius_server_counters {
42 u32 access_requests;
43 u32 invalid_requests;
44 u32 dup_access_requests;
45 u32 access_accepts;
46 u32 access_rejects;
47 u32 access_challenges;
48 u32 malformed_access_requests;
49 u32 bad_authenticators;
50 u32 packets_dropped;
51 u32 unknown_types;
52};
53
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54/**
55 * struct radius_session - Internal RADIUS server data for a session
56 */
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57struct radius_session {
58 struct radius_session *next;
59 struct radius_client *client;
60 struct radius_server_data *server;
61 unsigned int sess_id;
62 struct eap_sm *eap;
a875087d 63 struct eap_eapol_interface *eap_if;
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64
65 struct radius_msg *last_msg;
66 char *last_from_addr;
67 int last_from_port;
68 struct sockaddr_storage last_from;
69 socklen_t last_fromlen;
70 u8 last_identifier;
71 struct radius_msg *last_reply;
72 u8 last_authenticator[16];
73};
74
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75/**
76 * struct radius_client - Internal RADIUS server data for a client
77 */
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78struct radius_client {
79 struct radius_client *next;
80 struct in_addr addr;
81 struct in_addr mask;
82#ifdef CONFIG_IPV6
83 struct in6_addr addr6;
84 struct in6_addr mask6;
85#endif /* CONFIG_IPV6 */
86 char *shared_secret;
87 int shared_secret_len;
88 struct radius_session *sessions;
89 struct radius_server_counters counters;
90};
91
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92/**
93 * struct radius_server_data - Internal RADIUS server data
94 */
ebfa2275 95struct radius_server_data {
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96 /**
97 * auth_sock - Socket for RADIUS authentication messages
98 */
ebfa2275 99 int auth_sock;
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100
101 /**
102 * clients - List of authorized RADIUS clients
103 */
ebfa2275 104 struct radius_client *clients;
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105
106 /**
107 * next_sess_id - Next session identifier
108 */
ebfa2275 109 unsigned int next_sess_id;
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110
111 /**
112 * conf_ctx - Context pointer for callbacks
113 *
114 * This is used as the ctx argument in get_eap_user() calls.
115 */
a875087d 116 void *conf_ctx;
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117
118 /**
119 * num_sess - Number of active sessions
120 */
ebfa2275 121 int num_sess;
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122
123 /**
124 * eap_sim_db_priv - EAP-SIM/AKA database context
125 *
126 * This is passed to the EAP-SIM/AKA server implementation as a
127 * callback context.
128 */
ebfa2275 129 void *eap_sim_db_priv;
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130
131 /**
132 * ssl_ctx - TLS context
133 *
134 * This is passed to the EAP server implementation as a callback
135 * context for TLS operations.
136 */
ebfa2275 137 void *ssl_ctx;
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138
139 /**
140 * pac_opaque_encr_key - PAC-Opaque encryption key for EAP-FAST
141 *
142 * This parameter is used to set a key for EAP-FAST to encrypt the
143 * PAC-Opaque data. It can be set to %NULL if EAP-FAST is not used. If
144 * set, must point to a 16-octet key.
145 */
a875087d 146 u8 *pac_opaque_encr_key;
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147
148 /**
149 * eap_fast_a_id - EAP-FAST authority identity (A-ID)
150 *
151 * If EAP-FAST is not used, this can be set to %NULL. In theory, this
152 * is a variable length field, but due to some existing implementations
153 * requiring A-ID to be 16 octets in length, it is recommended to use
154 * that length for the field to provide interoperability with deployed
155 * peer implementations.
156 */
a875087d 157 u8 *eap_fast_a_id;
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158
159 /**
160 * eap_fast_a_id_len - Length of eap_fast_a_id buffer in octets
161 */
a875087d 162 size_t eap_fast_a_id_len;
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163
164 /**
165 * eap_fast_a_id_info - EAP-FAST authority identifier information
166 *
167 * This A-ID-Info contains a user-friendly name for the A-ID. For
168 * example, this could be the enterprise and server names in
169 * human-readable format. This field is encoded as UTF-8. If EAP-FAST
170 * is not used, this can be set to %NULL.
171 */
a875087d 172 char *eap_fast_a_id_info;
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173
174 /**
175 * eap_fast_prov - EAP-FAST provisioning modes
176 *
177 * 0 = provisioning disabled, 1 = only anonymous provisioning allowed,
178 * 2 = only authenticated provisioning allowed, 3 = both provisioning
179 * modes allowed.
180 */
a875087d 181 int eap_fast_prov;
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182
183 /**
184 * pac_key_lifetime - EAP-FAST PAC-Key lifetime in seconds
185 *
186 * This is the hard limit on how long a provisioned PAC-Key can be
187 * used.
188 */
a875087d 189 int pac_key_lifetime;
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190
191 /**
192 * pac_key_refresh_time - EAP-FAST PAC-Key refresh time in seconds
193 *
194 * This is a soft limit on the PAC-Key. The server will automatically
195 * generate a new PAC-Key when this number of seconds (or fewer) of the
196 * lifetime remains.
197 */
a875087d 198 int pac_key_refresh_time;
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199
200 /**
201 * eap_sim_aka_result_ind - EAP-SIM/AKA protected success indication
202 *
203 * This controls whether the protected success/failure indication
204 * (AT_RESULT_IND) is used with EAP-SIM and EAP-AKA.
205 */
a875087d 206 int eap_sim_aka_result_ind;
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207
208 /**
209 * tnc - Trusted Network Connect (TNC)
210 *
211 * This controls whether TNC is enabled and will be required before the
212 * peer is allowed to connect. Note: This is only used with EAP-TTLS
213 * and EAP-FAST. If any other EAP method is enabled, the peer will be
214 * allowed to connect without TNC.
215 */
a875087d 216 int tnc;
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217
218 /**
219 * pwd_group - The D-H group assigned for EAP-pwd
220 *
221 * If EAP-pwd is not used it can be set to zero.
222 */
223 u16 pwd_group;
224
225 /**
226 * server_id - Server identity
227 */
228 const char *server_id;
229
230 /**
231 * wps - Wi-Fi Protected Setup context
232 *
233 * If WPS is used with an external RADIUS server (which is quite
234 * unlikely configuration), this is used to provide a pointer to WPS
235 * context data. Normally, this can be set to %NULL.
236 */
a875087d 237 struct wps_context *wps;
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238
239 /**
240 * ipv6 - Whether to enable IPv6 support in the RADIUS server
241 */
ebfa2275 242 int ipv6;
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243
244 /**
245 * start_time - Timestamp of server start
246 */
247 struct os_reltime start_time;
248
249 /**
250 * counters - Statistics counters for server operations
251 *
252 * These counters are the sum over all clients.
253 */
ebfa2275 254 struct radius_server_counters counters;
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255
256 /**
257 * get_eap_user - Callback for fetching EAP user information
258 * @ctx: Context data from conf_ctx
259 * @identity: User identity
260 * @identity_len: identity buffer length in octets
261 * @phase2: Whether this is for Phase 2 identity
262 * @user: Data structure for filling in the user information
263 * Returns: 0 on success, -1 on failure
264 *
265 * This is used to fetch information from user database. The callback
266 * will fill in information about allowed EAP methods and the user
267 * password. The password field will be an allocated copy of the
268 * password data and RADIUS server will free it after use.
269 */
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270 int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
271 int phase2, struct eap_user *user);
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272
273 /**
274 * eap_req_id_text - Optional data for EAP-Request/Identity
275 *
276 * This can be used to configure an optional, displayable message that
277 * will be sent in EAP-Request/Identity. This string can contain an
278 * ASCII-0 character (nul) to separate network infromation per RFC
279 * 4284. The actual string length is explicit provided in
280 * eap_req_id_text_len since nul character will not be used as a string
281 * terminator.
282 */
a875087d 283 char *eap_req_id_text;
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284
285 /**
286 * eap_req_id_text_len - Length of eap_req_id_text buffer in octets
287 */
a875087d 288 size_t eap_req_id_text_len;
ebfa2275 289
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290 /*
291 * msg_ctx - Context data for wpa_msg() calls
292 */
293 void *msg_ctx;
294
295#ifdef CONFIG_RADIUS_TEST
296 char *dump_msk_file;
297#endif /* CONFIG_RADIUS_TEST */
298};
ebfa2275 299
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300
301#define RADIUS_DEBUG(args...) \
302wpa_printf(MSG_DEBUG, "RADIUS SRV: " args)
303#define RADIUS_ERROR(args...) \
304wpa_printf(MSG_ERROR, "RADIUS SRV: " args)
305#define RADIUS_DUMP(args...) \
306wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args)
307#define RADIUS_DUMP_ASCII(args...) \
308wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args)
309
310
311static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx);
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312static void radius_server_session_remove_timeout(void *eloop_ctx,
313 void *timeout_ctx);
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314
315
316static struct radius_client *
317radius_server_get_client(struct radius_server_data *data, struct in_addr *addr,
318 int ipv6)
319{
320 struct radius_client *client = data->clients;
321
322 while (client) {
323#ifdef CONFIG_IPV6
324 if (ipv6) {
325 struct in6_addr *addr6;
326 int i;
327
328 addr6 = (struct in6_addr *) addr;
329 for (i = 0; i < 16; i++) {
330 if ((addr6->s6_addr[i] &
331 client->mask6.s6_addr[i]) !=
332 (client->addr6.s6_addr[i] &
333 client->mask6.s6_addr[i])) {
334 i = 17;
335 break;
336 }
337 }
338 if (i == 16) {
339 break;
340 }
341 }
342#endif /* CONFIG_IPV6 */
343 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) ==
344 (addr->s_addr & client->mask.s_addr)) {
345 break;
346 }
347
348 client = client->next;
349 }
350
351 return client;
352}
353
354
355static struct radius_session *
356radius_server_get_session(struct radius_client *client, unsigned int sess_id)
357{
358 struct radius_session *sess = client->sessions;
359
360 while (sess) {
361 if (sess->sess_id == sess_id) {
362 break;
363 }
364 sess = sess->next;
365 }
366
367 return sess;
368}
369
370
371static void radius_server_session_free(struct radius_server_data *data,
372 struct radius_session *sess)
373{
374 eloop_cancel_timeout(radius_server_session_timeout, data, sess);
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375 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
376 eap_server_sm_deinit(sess->eap);
4781064b 377 radius_msg_free(sess->last_msg);
a875087d 378 os_free(sess->last_from_addr);
4781064b 379 radius_msg_free(sess->last_reply);
a875087d 380 os_free(sess);
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381 data->num_sess--;
382}
383
384
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385static void radius_server_session_remove(struct radius_server_data *data,
386 struct radius_session *sess)
387{
388 struct radius_client *client = sess->client;
389 struct radius_session *session, *prev;
390
391 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
392
393 prev = NULL;
394 session = client->sessions;
395 while (session) {
396 if (session == sess) {
397 if (prev == NULL) {
398 client->sessions = sess->next;
399 } else {
400 prev->next = sess->next;
401 }
402 radius_server_session_free(data, sess);
403 break;
404 }
405 prev = session;
406 session = session->next;
407 }
408}
409
410
411static void radius_server_session_remove_timeout(void *eloop_ctx,
412 void *timeout_ctx)
413{
414 struct radius_server_data *data = eloop_ctx;
415 struct radius_session *sess = timeout_ctx;
416 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id);
417 radius_server_session_remove(data, sess);
418}
419
420
421static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx)
422{
423 struct radius_server_data *data = eloop_ctx;
424 struct radius_session *sess = timeout_ctx;
425
426 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id);
427 radius_server_session_remove(data, sess);
428}
429
430
431static struct radius_session *
432radius_server_new_session(struct radius_server_data *data,
433 struct radius_client *client)
434{
435 struct radius_session *sess;
436
437 if (data->num_sess >= RADIUS_MAX_SESSION) {
438 RADIUS_DEBUG("Maximum number of existing session - no room "
439 "for a new session");
440 return NULL;
441 }
442
a875087d 443 sess = os_zalloc(sizeof(*sess));
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444 if (sess == NULL)
445 return NULL;
446
447 sess->server = data;
448 sess->client = client;
449 sess->sess_id = data->next_sess_id++;
450 sess->next = client->sessions;
451 client->sessions = sess;
452 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0,
453 radius_server_session_timeout, data, sess);
454 data->num_sess++;
455 return sess;
456}
457
458
459static struct radius_session *
460radius_server_get_new_session(struct radius_server_data *data,
461 struct radius_client *client,
462 struct radius_msg *msg)
463{
464 u8 *user;
465 size_t user_len;
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466 int res;
467 struct radius_session *sess;
468 struct eap_config eap_conf;
469
470 RADIUS_DEBUG("Creating a new session");
471
a875087d 472 user = os_malloc(256);
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473 if (user == NULL) {
474 return NULL;
475 }
476 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256);
477 if (res < 0 || res > 256) {
478 RADIUS_DEBUG("Could not get User-Name");
a875087d 479 os_free(user);
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480 return NULL;
481 }
482 user_len = res;
483 RADIUS_DUMP_ASCII("User-Name", user, user_len);
484
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485 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL);
486 os_free(user);
ebfa2275 487
a875087d 488 if (res == 0) {
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489 RADIUS_DEBUG("Matching user entry found");
490 sess = radius_server_new_session(data, client);
491 if (sess == NULL) {
492 RADIUS_DEBUG("Failed to create a new session");
493 return NULL;
494 }
495 } else {
496 RADIUS_DEBUG("User-Name not found from user database");
497 return NULL;
498 }
499
a875087d 500 os_memset(&eap_conf, 0, sizeof(eap_conf));
ebfa2275 501 eap_conf.ssl_ctx = data->ssl_ctx;
4781064b 502 eap_conf.msg_ctx = data->msg_ctx;
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503 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv;
504 eap_conf.backend_auth = TRUE;
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505 eap_conf.eap_server = 1;
506 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key;
507 eap_conf.eap_fast_a_id = data->eap_fast_a_id;
508 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len;
509 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info;
510 eap_conf.eap_fast_prov = data->eap_fast_prov;
511 eap_conf.pac_key_lifetime = data->pac_key_lifetime;
512 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time;
513 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind;
514 eap_conf.tnc = data->tnc;
515 eap_conf.wps = data->wps;
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516 eap_conf.pwd_group = data->pwd_group;
517 eap_conf.server_id = (const u8 *) data->server_id;
518 eap_conf.server_id_len = os_strlen(data->server_id);
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519 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb,
520 &eap_conf);
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521 if (sess->eap == NULL) {
522 RADIUS_DEBUG("Failed to initialize EAP state machine for the "
523 "new session");
524 radius_server_session_free(data, sess);
525 return NULL;
526 }
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527 sess->eap_if = eap_get_interface(sess->eap);
528 sess->eap_if->eapRestart = TRUE;
529 sess->eap_if->portEnabled = TRUE;
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530
531 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id);
532
533 return sess;
534}
535
536
537static struct radius_msg *
538radius_server_encapsulate_eap(struct radius_server_data *data,
539 struct radius_client *client,
540 struct radius_session *sess,
541 struct radius_msg *request)
542{
543 struct radius_msg *msg;
544 int code;
545 unsigned int sess_id;
4781064b 546 struct radius_hdr *hdr = radius_msg_get_hdr(request);
ebfa2275 547
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548 if (sess->eap_if->eapFail) {
549 sess->eap_if->eapFail = FALSE;
ebfa2275 550 code = RADIUS_CODE_ACCESS_REJECT;
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551 } else if (sess->eap_if->eapSuccess) {
552 sess->eap_if->eapSuccess = FALSE;
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553 code = RADIUS_CODE_ACCESS_ACCEPT;
554 } else {
a875087d 555 sess->eap_if->eapReq = FALSE;
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556 code = RADIUS_CODE_ACCESS_CHALLENGE;
557 }
558
4781064b 559 msg = radius_msg_new(code, hdr->identifier);
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560 if (msg == NULL) {
561 RADIUS_DEBUG("Failed to allocate reply message");
562 return NULL;
563 }
564
565 sess_id = htonl(sess->sess_id);
566 if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
567 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
568 (u8 *) &sess_id, sizeof(sess_id))) {
569 RADIUS_DEBUG("Failed to add State attribute");
570 }
571
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572 if (sess->eap_if->eapReqData &&
573 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
574 wpabuf_len(sess->eap_if->eapReqData))) {
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575 RADIUS_DEBUG("Failed to add EAP-Message attribute");
576 }
577
a875087d 578 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
ebfa2275 579 int len;
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580#ifdef CONFIG_RADIUS_TEST
581 if (data->dump_msk_file) {
582 FILE *f;
583 char buf[2 * 64 + 1];
584 f = fopen(data->dump_msk_file, "a");
585 if (f) {
586 len = sess->eap_if->eapKeyDataLen;
587 if (len > 64)
588 len = 64;
589 len = wpa_snprintf_hex(
590 buf, sizeof(buf),
591 sess->eap_if->eapKeyData, len);
592 buf[len] = '\0';
593 fprintf(f, "%s\n", buf);
594 fclose(f);
595 }
596 }
597#endif /* CONFIG_RADIUS_TEST */
a875087d 598 if (sess->eap_if->eapKeyDataLen > 64) {
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599 len = 32;
600 } else {
a875087d 601 len = sess->eap_if->eapKeyDataLen / 2;
ebfa2275 602 }
4781064b 603 if (!radius_msg_add_mppe_keys(msg, hdr->authenticator,
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604 (u8 *) client->shared_secret,
605 client->shared_secret_len,
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606 sess->eap_if->eapKeyData + len,
607 len, sess->eap_if->eapKeyData,
608 len)) {
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609 RADIUS_DEBUG("Failed to add MPPE key attributes");
610 }
611 }
612
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613 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
614 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
615 radius_msg_free(msg);
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616 return NULL;
617 }
618
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619 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
620 client->shared_secret_len,
4781064b 621 hdr->authenticator) < 0) {
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622 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
623 }
624
625 return msg;
626}
627
628
629static int radius_server_reject(struct radius_server_data *data,
630 struct radius_client *client,
631 struct radius_msg *request,
632 struct sockaddr *from, socklen_t fromlen,
633 const char *from_addr, int from_port)
634{
635 struct radius_msg *msg;
636 int ret = 0;
637 struct eap_hdr eapfail;
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638 struct wpabuf *buf;
639 struct radius_hdr *hdr = radius_msg_get_hdr(request);
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640
641 RADIUS_DEBUG("Reject invalid request from %s:%d",
642 from_addr, from_port);
643
4781064b 644 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier);
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645 if (msg == NULL) {
646 return -1;
647 }
648
a875087d 649 os_memset(&eapfail, 0, sizeof(eapfail));
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650 eapfail.code = EAP_CODE_FAILURE;
651 eapfail.identifier = 0;
a875087d 652 eapfail.length = host_to_be16(sizeof(eapfail));
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653
654 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
655 RADIUS_DEBUG("Failed to add EAP-Message attribute");
656 }
657
a875087d
JL
658 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
659 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
660 radius_msg_free(msg);
a875087d
JL
661 return -1;
662 }
ebfa2275
SZ
663
664 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
665 client->shared_secret_len,
4781064b
JM
666 hdr->authenticator) <
667 0) {
ebfa2275
SZ
668 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
669 }
670
671 if (wpa_debug_level <= MSG_MSGDUMP) {
672 radius_msg_dump(msg);
673 }
674
675 data->counters.access_rejects++;
676 client->counters.access_rejects++;
4781064b
JM
677 buf = radius_msg_get_buf(msg);
678 if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0,
ebfa2275 679 (struct sockaddr *) from, sizeof(*from)) < 0) {
4781064b 680 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", strerror(errno));
ebfa2275
SZ
681 ret = -1;
682 }
683
684 radius_msg_free(msg);
ebfa2275
SZ
685
686 return ret;
687}
688
689
690static int radius_server_request(struct radius_server_data *data,
691 struct radius_msg *msg,
692 struct sockaddr *from, socklen_t fromlen,
693 struct radius_client *client,
694 const char *from_addr, int from_port,
695 struct radius_session *force_sess)
696{
4781064b 697 struct wpabuf *eap = NULL;
ebfa2275 698 int res, state_included = 0;
a875087d 699 u8 statebuf[4];
ebfa2275
SZ
700 unsigned int state;
701 struct radius_session *sess;
702 struct radius_msg *reply;
a875087d 703 int is_complete = 0;
ebfa2275
SZ
704
705 if (force_sess)
706 sess = force_sess;
707 else {
708 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf,
709 sizeof(statebuf));
710 state_included = res >= 0;
711 if (res == sizeof(statebuf)) {
a875087d 712 state = WPA_GET_BE32(statebuf);
ebfa2275
SZ
713 sess = radius_server_get_session(client, state);
714 } else {
715 sess = NULL;
716 }
717 }
718
719 if (sess) {
720 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id);
721 } else if (state_included) {
722 RADIUS_DEBUG("State attribute included but no session found");
723 radius_server_reject(data, client, msg, from, fromlen,
724 from_addr, from_port);
725 return -1;
726 } else {
727 sess = radius_server_get_new_session(data, client, msg);
728 if (sess == NULL) {
729 RADIUS_DEBUG("Could not create a new session");
730 radius_server_reject(data, client, msg, from, fromlen,
731 from_addr, from_port);
732 return -1;
733 }
734 }
735
736 if (sess->last_from_port == from_port &&
4781064b
JM
737 sess->last_identifier == radius_msg_get_hdr(msg)->identifier &&
738 os_memcmp(sess->last_authenticator,
739 radius_msg_get_hdr(msg)->authenticator, 16) == 0) {
ebfa2275
SZ
740 RADIUS_DEBUG("Duplicate message from %s", from_addr);
741 data->counters.dup_access_requests++;
742 client->counters.dup_access_requests++;
743
744 if (sess->last_reply) {
4781064b
JM
745 struct wpabuf *buf;
746 buf = radius_msg_get_buf(sess->last_reply);
747 res = sendto(data->auth_sock, wpabuf_head(buf),
748 wpabuf_len(buf), 0,
ebfa2275
SZ
749 (struct sockaddr *) from, fromlen);
750 if (res < 0) {
4781064b
JM
751 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s",
752 strerror(errno));
ebfa2275
SZ
753 }
754 return 0;
755 }
756
757 RADIUS_DEBUG("No previous reply available for duplicate "
758 "message");
759 return -1;
760 }
761
4781064b 762 eap = radius_msg_get_eap(msg);
ebfa2275
SZ
763 if (eap == NULL) {
764 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s",
765 from_addr);
766 data->counters.packets_dropped++;
767 client->counters.packets_dropped++;
768 return -1;
769 }
770
4781064b 771 RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap));
ebfa2275
SZ
772
773 /* FIX: if Code is Request, Success, or Failure, send Access-Reject;
774 * RFC3579 Sect. 2.6.2.
775 * Include EAP-Response/Nak with no preferred method if
776 * code == request.
777 * If code is not 1-4, discard the packet silently.
778 * Or is this already done by the EAP state machine? */
779
a875087d 780 wpabuf_free(sess->eap_if->eapRespData);
4781064b 781 sess->eap_if->eapRespData = eap;
a875087d
JL
782 sess->eap_if->eapResp = TRUE;
783 eap_server_sm_step(sess->eap);
ebfa2275 784
a875087d
JL
785 if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess ||
786 sess->eap_if->eapFail) && sess->eap_if->eapReqData) {
ebfa2275 787 RADIUS_DUMP("EAP data from the state machine",
a875087d
JL
788 wpabuf_head(sess->eap_if->eapReqData),
789 wpabuf_len(sess->eap_if->eapReqData));
790 } else if (sess->eap_if->eapFail) {
ebfa2275 791 RADIUS_DEBUG("No EAP data from the state machine, but eapFail "
a875087d 792 "set");
ebfa2275 793 } else if (eap_sm_method_pending(sess->eap)) {
4781064b 794 radius_msg_free(sess->last_msg);
ebfa2275
SZ
795 sess->last_msg = msg;
796 sess->last_from_port = from_port;
a875087d
JL
797 os_free(sess->last_from_addr);
798 sess->last_from_addr = os_strdup(from_addr);
ebfa2275 799 sess->last_fromlen = fromlen;
a875087d 800 os_memcpy(&sess->last_from, from, fromlen);
ebfa2275
SZ
801 return -2;
802 } else {
803 RADIUS_DEBUG("No EAP data from the state machine - ignore this"
804 " Access-Request silently (assuming it was a "
805 "duplicate)");
806 data->counters.packets_dropped++;
807 client->counters.packets_dropped++;
808 return -1;
809 }
810
a875087d
JL
811 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail)
812 is_complete = 1;
ebfa2275 813
a875087d 814 reply = radius_server_encapsulate_eap(data, client, sess, msg);
ebfa2275
SZ
815
816 if (reply) {
4781064b
JM
817 struct wpabuf *buf;
818 struct radius_hdr *hdr;
819
ebfa2275
SZ
820 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port);
821 if (wpa_debug_level <= MSG_MSGDUMP) {
822 radius_msg_dump(reply);
823 }
824
4781064b 825 switch (radius_msg_get_hdr(reply)->code) {
ebfa2275
SZ
826 case RADIUS_CODE_ACCESS_ACCEPT:
827 data->counters.access_accepts++;
828 client->counters.access_accepts++;
829 break;
830 case RADIUS_CODE_ACCESS_REJECT:
831 data->counters.access_rejects++;
832 client->counters.access_rejects++;
833 break;
834 case RADIUS_CODE_ACCESS_CHALLENGE:
835 data->counters.access_challenges++;
836 client->counters.access_challenges++;
837 break;
838 }
4781064b
JM
839 buf = radius_msg_get_buf(reply);
840 res = sendto(data->auth_sock, wpabuf_head(buf),
841 wpabuf_len(buf), 0,
ebfa2275
SZ
842 (struct sockaddr *) from, fromlen);
843 if (res < 0) {
4781064b
JM
844 wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s",
845 strerror(errno));
ebfa2275 846 }
4781064b 847 radius_msg_free(sess->last_reply);
ebfa2275
SZ
848 sess->last_reply = reply;
849 sess->last_from_port = from_port;
4781064b
JM
850 hdr = radius_msg_get_hdr(msg);
851 sess->last_identifier = hdr->identifier;
852 os_memcpy(sess->last_authenticator, hdr->authenticator, 16);
ebfa2275
SZ
853 } else {
854 data->counters.packets_dropped++;
855 client->counters.packets_dropped++;
856 }
857
a875087d 858 if (is_complete) {
ebfa2275
SZ
859 RADIUS_DEBUG("Removing completed session 0x%x after timeout",
860 sess->sess_id);
861 eloop_cancel_timeout(radius_server_session_remove_timeout,
862 data, sess);
863 eloop_register_timeout(10, 0,
864 radius_server_session_remove_timeout,
865 data, sess);
866 }
867
868 return 0;
869}
870
871
872static void radius_server_receive_auth(int sock, void *eloop_ctx,
873 void *sock_ctx)
874{
875 struct radius_server_data *data = eloop_ctx;
876 u8 *buf = NULL;
a875087d
JL
877 union {
878 struct sockaddr_storage ss;
879 struct sockaddr_in sin;
880#ifdef CONFIG_IPV6
881 struct sockaddr_in6 sin6;
882#endif /* CONFIG_IPV6 */
883 } from;
ebfa2275
SZ
884 socklen_t fromlen;
885 int len;
886 struct radius_client *client = NULL;
887 struct radius_msg *msg = NULL;
888 char abuf[50];
889 int from_port = 0;
890
a875087d 891 buf = os_malloc(RADIUS_MAX_MSG_LEN);
ebfa2275
SZ
892 if (buf == NULL) {
893 goto fail;
894 }
895
896 fromlen = sizeof(from);
897 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
a875087d 898 (struct sockaddr *) &from.ss, &fromlen);
ebfa2275 899 if (len < 0) {
4781064b
JM
900 wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s",
901 strerror(errno));
ebfa2275
SZ
902 goto fail;
903 }
904
905#ifdef CONFIG_IPV6
906 if (data->ipv6) {
a875087d
JL
907 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf,
908 sizeof(abuf)) == NULL)
ebfa2275 909 abuf[0] = '\0';
a875087d 910 from_port = ntohs(from.sin6.sin6_port);
ebfa2275
SZ
911 RADIUS_DEBUG("Received %d bytes from %s:%d",
912 len, abuf, from_port);
913
914 client = radius_server_get_client(data,
915 (struct in_addr *)
a875087d 916 &from.sin6.sin6_addr, 1);
ebfa2275
SZ
917 }
918#endif /* CONFIG_IPV6 */
919
920 if (!data->ipv6) {
a875087d
JL
921 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf));
922 from_port = ntohs(from.sin.sin_port);
ebfa2275
SZ
923 RADIUS_DEBUG("Received %d bytes from %s:%d",
924 len, abuf, from_port);
925
a875087d 926 client = radius_server_get_client(data, &from.sin.sin_addr, 0);
ebfa2275
SZ
927 }
928
929 RADIUS_DUMP("Received data", buf, len);
930
931 if (client == NULL) {
932 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
933 data->counters.invalid_requests++;
934 goto fail;
935 }
936
937 msg = radius_msg_parse(buf, len);
938 if (msg == NULL) {
939 RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
940 data->counters.malformed_access_requests++;
941 client->counters.malformed_access_requests++;
942 goto fail;
943 }
944
a875087d 945 os_free(buf);
ebfa2275
SZ
946 buf = NULL;
947
948 if (wpa_debug_level <= MSG_MSGDUMP) {
949 radius_msg_dump(msg);
950 }
951
4781064b
JM
952 if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) {
953 RADIUS_DEBUG("Unexpected RADIUS code %d",
954 radius_msg_get_hdr(msg)->code);
ebfa2275
SZ
955 data->counters.unknown_types++;
956 client->counters.unknown_types++;
957 goto fail;
958 }
959
960 data->counters.access_requests++;
961 client->counters.access_requests++;
962
963 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret,
964 client->shared_secret_len, NULL)) {
965 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf);
966 data->counters.bad_authenticators++;
967 client->counters.bad_authenticators++;
968 goto fail;
969 }
970
971 if (radius_server_request(data, msg, (struct sockaddr *) &from,
972 fromlen, client, abuf, from_port, NULL) ==
973 -2)
974 return; /* msg was stored with the session */
975
976fail:
4781064b 977 radius_msg_free(msg);
a875087d
JL
978 os_free(buf);
979}
980
981
982static int radius_server_disable_pmtu_discovery(int s)
983{
984 int r = -1;
985#if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
986 /* Turn off Path MTU discovery on IPv4/UDP sockets. */
987 int action = IP_PMTUDISC_DONT;
988 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action,
989 sizeof(action));
990 if (r == -1)
991 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: "
992 "%s", strerror(errno));
993#endif
994 return r;
ebfa2275
SZ
995}
996
997
998static int radius_server_open_socket(int port)
999{
1000 int s;
1001 struct sockaddr_in addr;
1002
1003 s = socket(PF_INET, SOCK_DGRAM, 0);
1004 if (s < 0) {
4781064b 1005 wpa_printf(MSG_INFO, "RADIUS: socket: %s", strerror(errno));
ebfa2275
SZ
1006 return -1;
1007 }
1008
a875087d
JL
1009 radius_server_disable_pmtu_discovery(s);
1010
1011 os_memset(&addr, 0, sizeof(addr));
ebfa2275
SZ
1012 addr.sin_family = AF_INET;
1013 addr.sin_port = htons(port);
1014 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
4781064b 1015 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno));
ebfa2275
SZ
1016 close(s);
1017 return -1;
1018 }
1019
1020 return s;
1021}
1022
1023
1024#ifdef CONFIG_IPV6
1025static int radius_server_open_socket6(int port)
1026{
1027 int s;
1028 struct sockaddr_in6 addr;
1029
1030 s = socket(PF_INET6, SOCK_DGRAM, 0);
1031 if (s < 0) {
4781064b
JM
1032 wpa_printf(MSG_INFO, "RADIUS: socket[IPv6]: %s",
1033 strerror(errno));
ebfa2275
SZ
1034 return -1;
1035 }
1036
a875087d 1037 os_memset(&addr, 0, sizeof(addr));
ebfa2275 1038 addr.sin6_family = AF_INET6;
a875087d 1039 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any));
ebfa2275
SZ
1040 addr.sin6_port = htons(port);
1041 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
4781064b 1042 wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno));
ebfa2275
SZ
1043 close(s);
1044 return -1;
1045 }
1046
1047 return s;
1048}
1049#endif /* CONFIG_IPV6 */
1050
1051
1052static void radius_server_free_sessions(struct radius_server_data *data,
1053 struct radius_session *sessions)
1054{
1055 struct radius_session *session, *prev;
1056
1057 session = sessions;
1058 while (session) {
1059 prev = session;
1060 session = session->next;
1061 radius_server_session_free(data, prev);
1062 }
1063}
1064
1065
1066static void radius_server_free_clients(struct radius_server_data *data,
1067 struct radius_client *clients)
1068{
1069 struct radius_client *client, *prev;
1070
1071 client = clients;
1072 while (client) {
1073 prev = client;
1074 client = client->next;
1075
1076 radius_server_free_sessions(data, prev->sessions);
a875087d
JL
1077 os_free(prev->shared_secret);
1078 os_free(prev);
ebfa2275
SZ
1079 }
1080}
1081
1082
1083static struct radius_client *
1084radius_server_read_clients(const char *client_file, int ipv6)
1085{
1086 FILE *f;
1087 const int buf_size = 1024;
1088 char *buf, *pos;
1089 struct radius_client *clients, *tail, *entry;
1090 int line = 0, mask, failed = 0, i;
1091 struct in_addr addr;
1092#ifdef CONFIG_IPV6
1093 struct in6_addr addr6;
1094#endif /* CONFIG_IPV6 */
1095 unsigned int val;
1096
1097 f = fopen(client_file, "r");
1098 if (f == NULL) {
1099 RADIUS_ERROR("Could not open client file '%s'", client_file);
1100 return NULL;
1101 }
1102
a875087d 1103 buf = os_malloc(buf_size);
ebfa2275
SZ
1104 if (buf == NULL) {
1105 fclose(f);
1106 return NULL;
1107 }
1108
1109 clients = tail = NULL;
1110 while (fgets(buf, buf_size, f)) {
1111 /* Configuration file format:
1112 * 192.168.1.0/24 secret
1113 * 192.168.1.2 secret
1114 * fe80::211:22ff:fe33:4455/64 secretipv6
1115 */
1116 line++;
1117 buf[buf_size - 1] = '\0';
1118 pos = buf;
1119 while (*pos != '\0' && *pos != '\n')
1120 pos++;
1121 if (*pos == '\n')
1122 *pos = '\0';
1123 if (*buf == '\0' || *buf == '#')
1124 continue;
1125
1126 pos = buf;
1127 while ((*pos >= '0' && *pos <= '9') || *pos == '.' ||
1128 (*pos >= 'a' && *pos <= 'f') || *pos == ':' ||
1129 (*pos >= 'A' && *pos <= 'F')) {
1130 pos++;
1131 }
1132
1133 if (*pos == '\0') {
1134 failed = 1;
1135 break;
1136 }
1137
1138 if (*pos == '/') {
1139 char *end;
1140 *pos++ = '\0';
1141 mask = strtol(pos, &end, 10);
1142 if ((pos == end) ||
1143 (mask < 0 || mask > (ipv6 ? 128 : 32))) {
1144 failed = 1;
1145 break;
1146 }
1147 pos = end;
1148 } else {
1149 mask = ipv6 ? 128 : 32;
1150 *pos++ = '\0';
1151 }
1152
1153 if (!ipv6 && inet_aton(buf, &addr) == 0) {
1154 failed = 1;
1155 break;
1156 }
1157#ifdef CONFIG_IPV6
1158 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) {
1159 if (inet_pton(AF_INET, buf, &addr) <= 0) {
1160 failed = 1;
1161 break;
1162 }
1163 /* Convert IPv4 address to IPv6 */
1164 if (mask <= 32)
1165 mask += (128 - 32);
a875087d 1166 os_memset(addr6.s6_addr, 0, 10);
ebfa2275
SZ
1167 addr6.s6_addr[10] = 0xff;
1168 addr6.s6_addr[11] = 0xff;
a875087d
JL
1169 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr,
1170 4);
ebfa2275
SZ
1171 }
1172#endif /* CONFIG_IPV6 */
1173
1174 while (*pos == ' ' || *pos == '\t') {
1175 pos++;
1176 }
1177
1178 if (*pos == '\0') {
1179 failed = 1;
1180 break;
1181 }
1182
a875087d 1183 entry = os_zalloc(sizeof(*entry));
ebfa2275
SZ
1184 if (entry == NULL) {
1185 failed = 1;
1186 break;
1187 }
a875087d 1188 entry->shared_secret = os_strdup(pos);
ebfa2275
SZ
1189 if (entry->shared_secret == NULL) {
1190 failed = 1;
a875087d 1191 os_free(entry);
ebfa2275
SZ
1192 break;
1193 }
a875087d 1194 entry->shared_secret_len = os_strlen(entry->shared_secret);
ebfa2275
SZ
1195 entry->addr.s_addr = addr.s_addr;
1196 if (!ipv6) {
1197 val = 0;
1198 for (i = 0; i < mask; i++)
1199 val |= 1 << (31 - i);
1200 entry->mask.s_addr = htonl(val);
1201 }
1202#ifdef CONFIG_IPV6
1203 if (ipv6) {
1204 int offset = mask / 8;
1205
a875087d
JL
1206 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16);
1207 os_memset(entry->mask6.s6_addr, 0xff, offset);
ebfa2275
SZ
1208 val = 0;
1209 for (i = 0; i < (mask % 8); i++)
1210 val |= 1 << (7 - i);
1211 if (offset < 16)
1212 entry->mask6.s6_addr[offset] = val;
1213 }
1214#endif /* CONFIG_IPV6 */
1215
1216 if (tail == NULL) {
1217 clients = tail = entry;
1218 } else {
1219 tail->next = entry;
1220 tail = entry;
1221 }
1222 }
1223
1224 if (failed) {
1225 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file);
1226 radius_server_free_clients(NULL, clients);
1227 clients = NULL;
1228 }
1229
a875087d 1230 os_free(buf);
ebfa2275
SZ
1231 fclose(f);
1232
1233 return clients;
1234}
1235
1236
4781064b
JM
1237/**
1238 * radius_server_init - Initialize RADIUS server
1239 * @conf: Configuration for the RADIUS server
1240 * Returns: Pointer to private RADIUS server context or %NULL on failure
1241 *
1242 * This initializes a RADIUS server instance and returns a context pointer that
1243 * will be used in other calls to the RADIUS server module. The server can be
1244 * deinitialize by calling radius_server_deinit().
1245 */
ebfa2275
SZ
1246struct radius_server_data *
1247radius_server_init(struct radius_server_conf *conf)
1248{
1249 struct radius_server_data *data;
1250
1251#ifndef CONFIG_IPV6
1252 if (conf->ipv6) {
4781064b 1253 wpa_printf(MSG_ERROR, "RADIUS server compiled without IPv6 support");
ebfa2275
SZ
1254 return NULL;
1255 }
1256#endif /* CONFIG_IPV6 */
1257
a875087d 1258 data = os_zalloc(sizeof(*data));
ebfa2275
SZ
1259 if (data == NULL)
1260 return NULL;
1261
4781064b 1262 os_get_reltime(&data->start_time);
a875087d 1263 data->conf_ctx = conf->conf_ctx;
ebfa2275
SZ
1264 data->eap_sim_db_priv = conf->eap_sim_db_priv;
1265 data->ssl_ctx = conf->ssl_ctx;
4781064b 1266 data->msg_ctx = conf->msg_ctx;
ebfa2275 1267 data->ipv6 = conf->ipv6;
a875087d
JL
1268 if (conf->pac_opaque_encr_key) {
1269 data->pac_opaque_encr_key = os_malloc(16);
1270 os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key,
1271 16);
1272 }
1273 if (conf->eap_fast_a_id) {
1274 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len);
1275 if (data->eap_fast_a_id) {
1276 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id,
1277 conf->eap_fast_a_id_len);
1278 data->eap_fast_a_id_len = conf->eap_fast_a_id_len;
1279 }
1280 }
1281 if (conf->eap_fast_a_id_info)
1282 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info);
1283 data->eap_fast_prov = conf->eap_fast_prov;
1284 data->pac_key_lifetime = conf->pac_key_lifetime;
1285 data->pac_key_refresh_time = conf->pac_key_refresh_time;
1286 data->get_eap_user = conf->get_eap_user;
1287 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1288 data->tnc = conf->tnc;
1289 data->wps = conf->wps;
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1290 data->pwd_group = conf->pwd_group;
1291 data->server_id = conf->server_id;
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1292 if (conf->eap_req_id_text) {
1293 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len);
1294 if (data->eap_req_id_text) {
1295 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text,
1296 conf->eap_req_id_text_len);
1297 data->eap_req_id_text_len = conf->eap_req_id_text_len;
1298 }
1299 }
ebfa2275 1300
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1301#ifdef CONFIG_RADIUS_TEST
1302 if (conf->dump_msk_file)
1303 data->dump_msk_file = os_strdup(conf->dump_msk_file);
1304#endif /* CONFIG_RADIUS_TEST */
1305
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1306 data->clients = radius_server_read_clients(conf->client_file,
1307 conf->ipv6);
1308 if (data->clients == NULL) {
4781064b 1309 wpa_printf(MSG_ERROR, "No RADIUS clients configured");
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1310 radius_server_deinit(data);
1311 return NULL;
1312 }
1313
1314#ifdef CONFIG_IPV6
1315 if (conf->ipv6)
1316 data->auth_sock = radius_server_open_socket6(conf->auth_port);
1317 else
1318#endif /* CONFIG_IPV6 */
1319 data->auth_sock = radius_server_open_socket(conf->auth_port);
1320 if (data->auth_sock < 0) {
4781064b 1321 wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS authentication server");
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1322 radius_server_deinit(data);
1323 return NULL;
1324 }
1325 if (eloop_register_read_sock(data->auth_sock,
1326 radius_server_receive_auth,
1327 data, NULL)) {
1328 radius_server_deinit(data);
1329 return NULL;
1330 }
1331
1332 return data;
1333}
1334
1335
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1336/**
1337 * radius_server_deinit - Deinitialize RADIUS server
1338 * @data: RADIUS server context from radius_server_init()
1339 */
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1340void radius_server_deinit(struct radius_server_data *data)
1341{
1342 if (data == NULL)
1343 return;
1344
1345 if (data->auth_sock >= 0) {
1346 eloop_unregister_read_sock(data->auth_sock);
1347 close(data->auth_sock);
1348 }
1349
1350 radius_server_free_clients(data, data->clients);
1351
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1352 os_free(data->pac_opaque_encr_key);
1353 os_free(data->eap_fast_a_id);
1354 os_free(data->eap_fast_a_id_info);
1355 os_free(data->eap_req_id_text);
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1356#ifdef CONFIG_RADIUS_TEST
1357 os_free(data->dump_msk_file);
1358#endif /* CONFIG_RADIUS_TEST */
a875087d 1359 os_free(data);
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1360}
1361
1362
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1363/**
1364 * radius_server_get_mib - Get RADIUS server MIB information
1365 * @data: RADIUS server context from radius_server_init()
1366 * @buf: Buffer for returning the MIB data in text format
1367 * @buflen: buf length in octets
1368 * Returns: Number of octets written into buf
1369 */
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1370int radius_server_get_mib(struct radius_server_data *data, char *buf,
1371 size_t buflen)
1372{
1373 int ret, uptime;
1374 unsigned int idx;
1375 char *end, *pos;
4781064b 1376 struct os_reltime now;
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1377 struct radius_client *cli;
1378
1379 /* RFC 2619 - RADIUS Authentication Server MIB */
1380
1381 if (data == NULL || buflen == 0)
1382 return 0;
1383
1384 pos = buf;
1385 end = buf + buflen;
1386
4781064b 1387 os_get_reltime(&now);
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1388 uptime = (now.sec - data->start_time.sec) * 100 +
1389 ((now.usec - data->start_time.usec) / 10000) % 100;
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1390 ret = os_snprintf(pos, end - pos,
1391 "RADIUS-AUTH-SERVER-MIB\n"
1392 "radiusAuthServIdent=hostapd\n"
1393 "radiusAuthServUpTime=%d\n"
1394 "radiusAuthServResetTime=0\n"
1395 "radiusAuthServConfigReset=4\n",
1396 uptime);
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1397 if (ret < 0 || ret >= end - pos) {
1398 *pos = '\0';
1399 return pos - buf;
1400 }
1401 pos += ret;
1402
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1403 ret = os_snprintf(pos, end - pos,
1404 "radiusAuthServTotalAccessRequests=%u\n"
1405 "radiusAuthServTotalInvalidRequests=%u\n"
1406 "radiusAuthServTotalDupAccessRequests=%u\n"
1407 "radiusAuthServTotalAccessAccepts=%u\n"
1408 "radiusAuthServTotalAccessRejects=%u\n"
1409 "radiusAuthServTotalAccessChallenges=%u\n"
1410 "radiusAuthServTotalMalformedAccessRequests=%u\n"
1411 "radiusAuthServTotalBadAuthenticators=%u\n"
1412 "radiusAuthServTotalPacketsDropped=%u\n"
1413 "radiusAuthServTotalUnknownTypes=%u\n",
1414 data->counters.access_requests,
1415 data->counters.invalid_requests,
1416 data->counters.dup_access_requests,
1417 data->counters.access_accepts,
1418 data->counters.access_rejects,
1419 data->counters.access_challenges,
1420 data->counters.malformed_access_requests,
1421 data->counters.bad_authenticators,
1422 data->counters.packets_dropped,
1423 data->counters.unknown_types);
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1424 if (ret < 0 || ret >= end - pos) {
1425 *pos = '\0';
1426 return pos - buf;
1427 }
1428 pos += ret;
1429
1430 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) {
1431 char abuf[50], mbuf[50];
1432#ifdef CONFIG_IPV6
1433 if (data->ipv6) {
1434 if (inet_ntop(AF_INET6, &cli->addr6, abuf,
1435 sizeof(abuf)) == NULL)
1436 abuf[0] = '\0';
1437 if (inet_ntop(AF_INET6, &cli->mask6, abuf,
1438 sizeof(mbuf)) == NULL)
1439 mbuf[0] = '\0';
1440 }
1441#endif /* CONFIG_IPV6 */
1442 if (!data->ipv6) {
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1443 os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf));
1444 os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf));
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1445 }
1446
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1447 ret = os_snprintf(pos, end - pos,
1448 "radiusAuthClientIndex=%u\n"
1449 "radiusAuthClientAddress=%s/%s\n"
1450 "radiusAuthServAccessRequests=%u\n"
1451 "radiusAuthServDupAccessRequests=%u\n"
1452 "radiusAuthServAccessAccepts=%u\n"
1453 "radiusAuthServAccessRejects=%u\n"
1454 "radiusAuthServAccessChallenges=%u\n"
1455 "radiusAuthServMalformedAccessRequests=%u\n"
1456 "radiusAuthServBadAuthenticators=%u\n"
1457 "radiusAuthServPacketsDropped=%u\n"
1458 "radiusAuthServUnknownTypes=%u\n",
1459 idx,
1460 abuf, mbuf,
1461 cli->counters.access_requests,
1462 cli->counters.dup_access_requests,
1463 cli->counters.access_accepts,
1464 cli->counters.access_rejects,
1465 cli->counters.access_challenges,
1466 cli->counters.malformed_access_requests,
1467 cli->counters.bad_authenticators,
1468 cli->counters.packets_dropped,
1469 cli->counters.unknown_types);
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1470 if (ret < 0 || ret >= end - pos) {
1471 *pos = '\0';
1472 return pos - buf;
1473 }
1474 pos += ret;
1475 }
1476
1477 return pos - buf;
1478}
1479
1480
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1481static int radius_server_get_eap_user(void *ctx, const u8 *identity,
1482 size_t identity_len, int phase2,
1483 struct eap_user *user)
1484{
1485 struct radius_session *sess = ctx;
a875087d 1486 struct radius_server_data *data = sess->server;
ebfa2275 1487
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1488 return data->get_eap_user(data->conf_ctx, identity, identity_len,
1489 phase2, user);
1490}
ebfa2275 1491
ebfa2275 1492
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1493static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len)
1494{
1495 struct radius_session *sess = ctx;
1496 struct radius_server_data *data = sess->server;
1497 *len = data->eap_req_id_text_len;
1498 return data->eap_req_id_text;
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1499}
1500
1501
1502static struct eapol_callbacks radius_server_eapol_cb =
1503{
ebfa2275 1504 .get_eap_user = radius_server_get_eap_user,
a875087d 1505 .get_eap_req_id_text = radius_server_get_eap_req_id_text,
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1506};
1507
1508
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1509/**
1510 * radius_server_eap_pending_cb - Pending EAP data notification
1511 * @data: RADIUS server context from radius_server_init()
1512 * @ctx: Pending EAP context pointer
1513 *
1514 * This function is used to notify EAP server module that a pending operation
1515 * has been completed and processing of the EAP session can proceed.
1516 */
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1517void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx)
1518{
1519 struct radius_client *cli;
1520 struct radius_session *s, *sess = NULL;
1521 struct radius_msg *msg;
1522
1523 if (data == NULL)
1524 return;
1525
1526 for (cli = data->clients; cli; cli = cli->next) {
1527 for (s = cli->sessions; s; s = s->next) {
1528 if (s->eap == ctx && s->last_msg) {
1529 sess = s;
1530 break;
1531 }
1532 if (sess)
1533 break;
1534 }
1535 if (sess)
1536 break;
1537 }
1538
1539 if (sess == NULL) {
1540 RADIUS_DEBUG("No session matched callback ctx");
1541 return;
1542 }
1543
1544 msg = sess->last_msg;
1545 sess->last_msg = NULL;
1546 eap_sm_pending_cb(sess->eap);
1547 if (radius_server_request(data, msg,
1548 (struct sockaddr *) &sess->last_from,
1549 sess->last_fromlen, cli,
1550 sess->last_from_addr,
1551 sess->last_from_port, sess) == -2)
1552 return; /* msg was stored with the session */
1553
1554 radius_msg_free(msg);
ebfa2275 1555}