Line data Source code
1 : /*
2 : * RADIUS authentication server
3 : * Copyright (c) 2005-2009, 2011-2014, 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 : #include <net/if.h>
11 : #ifdef CONFIG_SQLITE
12 : #include <sqlite3.h>
13 : #endif /* CONFIG_SQLITE */
14 :
15 : #include "common.h"
16 : #include "radius.h"
17 : #include "eloop.h"
18 : #include "eap_server/eap.h"
19 : #include "ap/ap_config.h"
20 : #include "crypto/tls.h"
21 : #include "radius_server.h"
22 :
23 : /**
24 : * RADIUS_SESSION_TIMEOUT - Session timeout in seconds
25 : */
26 : #define RADIUS_SESSION_TIMEOUT 60
27 :
28 : /**
29 : * RADIUS_MAX_SESSION - Maximum number of active sessions
30 : */
31 : #define RADIUS_MAX_SESSION 100
32 :
33 : /**
34 : * RADIUS_MAX_MSG_LEN - Maximum message length for incoming RADIUS messages
35 : */
36 : #define RADIUS_MAX_MSG_LEN 3000
37 :
38 : static struct eapol_callbacks radius_server_eapol_cb;
39 :
40 : struct radius_client;
41 : struct radius_server_data;
42 :
43 : /**
44 : * struct radius_server_counters - RADIUS server statistics counters
45 : */
46 : struct radius_server_counters {
47 : u32 access_requests;
48 : u32 invalid_requests;
49 : u32 dup_access_requests;
50 : u32 access_accepts;
51 : u32 access_rejects;
52 : u32 access_challenges;
53 : u32 malformed_access_requests;
54 : u32 bad_authenticators;
55 : u32 packets_dropped;
56 : u32 unknown_types;
57 :
58 : u32 acct_requests;
59 : u32 invalid_acct_requests;
60 : u32 acct_responses;
61 : u32 malformed_acct_requests;
62 : u32 acct_bad_authenticators;
63 : u32 unknown_acct_types;
64 : };
65 :
66 : /**
67 : * struct radius_session - Internal RADIUS server data for a session
68 : */
69 : struct radius_session {
70 : struct radius_session *next;
71 : struct radius_client *client;
72 : struct radius_server_data *server;
73 : unsigned int sess_id;
74 : struct eap_sm *eap;
75 : struct eap_eapol_interface *eap_if;
76 : char *username; /* from User-Name attribute */
77 : char *nas_ip;
78 :
79 : struct radius_msg *last_msg;
80 : char *last_from_addr;
81 : int last_from_port;
82 : struct sockaddr_storage last_from;
83 : socklen_t last_fromlen;
84 : u8 last_identifier;
85 : struct radius_msg *last_reply;
86 : u8 last_authenticator[16];
87 :
88 : unsigned int remediation:1;
89 : unsigned int macacl:1;
90 :
91 : struct hostapd_radius_attr *accept_attr;
92 : };
93 :
94 : /**
95 : * struct radius_client - Internal RADIUS server data for a client
96 : */
97 : struct radius_client {
98 : struct radius_client *next;
99 : struct in_addr addr;
100 : struct in_addr mask;
101 : #ifdef CONFIG_IPV6
102 : struct in6_addr addr6;
103 : struct in6_addr mask6;
104 : #endif /* CONFIG_IPV6 */
105 : char *shared_secret;
106 : int shared_secret_len;
107 : struct radius_session *sessions;
108 : struct radius_server_counters counters;
109 : };
110 :
111 : /**
112 : * struct radius_server_data - Internal RADIUS server data
113 : */
114 : struct radius_server_data {
115 : /**
116 : * auth_sock - Socket for RADIUS authentication messages
117 : */
118 : int auth_sock;
119 :
120 : /**
121 : * acct_sock - Socket for RADIUS accounting messages
122 : */
123 : int acct_sock;
124 :
125 : /**
126 : * clients - List of authorized RADIUS clients
127 : */
128 : struct radius_client *clients;
129 :
130 : /**
131 : * next_sess_id - Next session identifier
132 : */
133 : unsigned int next_sess_id;
134 :
135 : /**
136 : * conf_ctx - Context pointer for callbacks
137 : *
138 : * This is used as the ctx argument in get_eap_user() calls.
139 : */
140 : void *conf_ctx;
141 :
142 : /**
143 : * num_sess - Number of active sessions
144 : */
145 : int num_sess;
146 :
147 : /**
148 : * eap_sim_db_priv - EAP-SIM/AKA database context
149 : *
150 : * This is passed to the EAP-SIM/AKA server implementation as a
151 : * callback context.
152 : */
153 : void *eap_sim_db_priv;
154 :
155 : /**
156 : * ssl_ctx - TLS context
157 : *
158 : * This is passed to the EAP server implementation as a callback
159 : * context for TLS operations.
160 : */
161 : void *ssl_ctx;
162 :
163 : /**
164 : * pac_opaque_encr_key - PAC-Opaque encryption key for EAP-FAST
165 : *
166 : * This parameter is used to set a key for EAP-FAST to encrypt the
167 : * PAC-Opaque data. It can be set to %NULL if EAP-FAST is not used. If
168 : * set, must point to a 16-octet key.
169 : */
170 : u8 *pac_opaque_encr_key;
171 :
172 : /**
173 : * eap_fast_a_id - EAP-FAST authority identity (A-ID)
174 : *
175 : * If EAP-FAST is not used, this can be set to %NULL. In theory, this
176 : * is a variable length field, but due to some existing implementations
177 : * requiring A-ID to be 16 octets in length, it is recommended to use
178 : * that length for the field to provide interoperability with deployed
179 : * peer implementations.
180 : */
181 : u8 *eap_fast_a_id;
182 :
183 : /**
184 : * eap_fast_a_id_len - Length of eap_fast_a_id buffer in octets
185 : */
186 : size_t eap_fast_a_id_len;
187 :
188 : /**
189 : * eap_fast_a_id_info - EAP-FAST authority identifier information
190 : *
191 : * This A-ID-Info contains a user-friendly name for the A-ID. For
192 : * example, this could be the enterprise and server names in
193 : * human-readable format. This field is encoded as UTF-8. If EAP-FAST
194 : * is not used, this can be set to %NULL.
195 : */
196 : char *eap_fast_a_id_info;
197 :
198 : /**
199 : * eap_fast_prov - EAP-FAST provisioning modes
200 : *
201 : * 0 = provisioning disabled, 1 = only anonymous provisioning allowed,
202 : * 2 = only authenticated provisioning allowed, 3 = both provisioning
203 : * modes allowed.
204 : */
205 : int eap_fast_prov;
206 :
207 : /**
208 : * pac_key_lifetime - EAP-FAST PAC-Key lifetime in seconds
209 : *
210 : * This is the hard limit on how long a provisioned PAC-Key can be
211 : * used.
212 : */
213 : int pac_key_lifetime;
214 :
215 : /**
216 : * pac_key_refresh_time - EAP-FAST PAC-Key refresh time in seconds
217 : *
218 : * This is a soft limit on the PAC-Key. The server will automatically
219 : * generate a new PAC-Key when this number of seconds (or fewer) of the
220 : * lifetime remains.
221 : */
222 : int pac_key_refresh_time;
223 :
224 : /**
225 : * eap_sim_aka_result_ind - EAP-SIM/AKA protected success indication
226 : *
227 : * This controls whether the protected success/failure indication
228 : * (AT_RESULT_IND) is used with EAP-SIM and EAP-AKA.
229 : */
230 : int eap_sim_aka_result_ind;
231 :
232 : /**
233 : * tnc - Trusted Network Connect (TNC)
234 : *
235 : * This controls whether TNC is enabled and will be required before the
236 : * peer is allowed to connect. Note: This is only used with EAP-TTLS
237 : * and EAP-FAST. If any other EAP method is enabled, the peer will be
238 : * allowed to connect without TNC.
239 : */
240 : int tnc;
241 :
242 : /**
243 : * pwd_group - The D-H group assigned for EAP-pwd
244 : *
245 : * If EAP-pwd is not used it can be set to zero.
246 : */
247 : u16 pwd_group;
248 :
249 : /**
250 : * server_id - Server identity
251 : */
252 : const char *server_id;
253 :
254 : /**
255 : * erp - Whether EAP Re-authentication Protocol (ERP) is enabled
256 : *
257 : * This controls whether the authentication server derives ERP key
258 : * hierarchy (rRK and rIK) from full EAP authentication and allows
259 : * these keys to be used to perform ERP to derive rMSK instead of full
260 : * EAP authentication to derive MSK.
261 : */
262 : int erp;
263 :
264 : const char *erp_domain;
265 :
266 : struct dl_list erp_keys; /* struct eap_server_erp_key */
267 :
268 : /**
269 : * wps - Wi-Fi Protected Setup context
270 : *
271 : * If WPS is used with an external RADIUS server (which is quite
272 : * unlikely configuration), this is used to provide a pointer to WPS
273 : * context data. Normally, this can be set to %NULL.
274 : */
275 : struct wps_context *wps;
276 :
277 : /**
278 : * ipv6 - Whether to enable IPv6 support in the RADIUS server
279 : */
280 : int ipv6;
281 :
282 : /**
283 : * start_time - Timestamp of server start
284 : */
285 : struct os_reltime start_time;
286 :
287 : /**
288 : * counters - Statistics counters for server operations
289 : *
290 : * These counters are the sum over all clients.
291 : */
292 : struct radius_server_counters counters;
293 :
294 : /**
295 : * get_eap_user - Callback for fetching EAP user information
296 : * @ctx: Context data from conf_ctx
297 : * @identity: User identity
298 : * @identity_len: identity buffer length in octets
299 : * @phase2: Whether this is for Phase 2 identity
300 : * @user: Data structure for filling in the user information
301 : * Returns: 0 on success, -1 on failure
302 : *
303 : * This is used to fetch information from user database. The callback
304 : * will fill in information about allowed EAP methods and the user
305 : * password. The password field will be an allocated copy of the
306 : * password data and RADIUS server will free it after use.
307 : */
308 : int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
309 : int phase2, struct eap_user *user);
310 :
311 : /**
312 : * eap_req_id_text - Optional data for EAP-Request/Identity
313 : *
314 : * This can be used to configure an optional, displayable message that
315 : * will be sent in EAP-Request/Identity. This string can contain an
316 : * ASCII-0 character (nul) to separate network infromation per RFC
317 : * 4284. The actual string length is explicit provided in
318 : * eap_req_id_text_len since nul character will not be used as a string
319 : * terminator.
320 : */
321 : char *eap_req_id_text;
322 :
323 : /**
324 : * eap_req_id_text_len - Length of eap_req_id_text buffer in octets
325 : */
326 : size_t eap_req_id_text_len;
327 :
328 : /*
329 : * msg_ctx - Context data for wpa_msg() calls
330 : */
331 : void *msg_ctx;
332 :
333 : #ifdef CONFIG_RADIUS_TEST
334 : char *dump_msk_file;
335 : #endif /* CONFIG_RADIUS_TEST */
336 :
337 : char *subscr_remediation_url;
338 : u8 subscr_remediation_method;
339 :
340 : #ifdef CONFIG_SQLITE
341 : sqlite3 *db;
342 : #endif /* CONFIG_SQLITE */
343 : };
344 :
345 :
346 : #define RADIUS_DEBUG(args...) \
347 : wpa_printf(MSG_DEBUG, "RADIUS SRV: " args)
348 : #define RADIUS_ERROR(args...) \
349 : wpa_printf(MSG_ERROR, "RADIUS SRV: " args)
350 : #define RADIUS_DUMP(args...) \
351 : wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args)
352 : #define RADIUS_DUMP_ASCII(args...) \
353 : wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args)
354 :
355 :
356 : static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx);
357 : static void radius_server_session_remove_timeout(void *eloop_ctx,
358 : void *timeout_ctx);
359 :
360 : void srv_log(struct radius_session *sess, const char *fmt, ...)
361 : PRINTF_FORMAT(2, 3);
362 :
363 3623 : void srv_log(struct radius_session *sess, const char *fmt, ...)
364 : {
365 : va_list ap;
366 : char *buf;
367 : int buflen;
368 :
369 3623 : va_start(ap, fmt);
370 3623 : buflen = vsnprintf(NULL, 0, fmt, ap) + 1;
371 3623 : va_end(ap);
372 :
373 3623 : buf = os_malloc(buflen);
374 3623 : if (buf == NULL)
375 3623 : return;
376 3623 : va_start(ap, fmt);
377 3623 : vsnprintf(buf, buflen, fmt, ap);
378 3623 : va_end(ap);
379 :
380 3623 : RADIUS_DEBUG("[0x%x %s] %s", sess->sess_id, sess->nas_ip, buf);
381 :
382 : #ifdef CONFIG_SQLITE
383 3623 : if (sess->server->db) {
384 : char *sql;
385 6 : sql = sqlite3_mprintf("INSERT INTO authlog"
386 : "(timestamp,session,nas_ip,username,note)"
387 : " VALUES ("
388 : "strftime('%%Y-%%m-%%d %%H:%%M:%%f',"
389 : "'now'),%u,%Q,%Q,%Q)",
390 : sess->sess_id, sess->nas_ip,
391 : sess->username, buf);
392 6 : if (sql) {
393 6 : if (sqlite3_exec(sess->server->db, sql, NULL, NULL,
394 : NULL) != SQLITE_OK) {
395 0 : RADIUS_ERROR("Failed to add authlog entry into sqlite database: %s",
396 : sqlite3_errmsg(sess->server->db));
397 : }
398 6 : sqlite3_free(sql);
399 : }
400 : }
401 : #endif /* CONFIG_SQLITE */
402 :
403 3623 : os_free(buf);
404 : }
405 :
406 :
407 : static struct radius_client *
408 3307 : radius_server_get_client(struct radius_server_data *data, struct in_addr *addr,
409 : int ipv6)
410 : {
411 3307 : struct radius_client *client = data->clients;
412 :
413 6614 : while (client) {
414 : #ifdef CONFIG_IPV6
415 3307 : if (ipv6) {
416 : struct in6_addr *addr6;
417 : int i;
418 :
419 7 : addr6 = (struct in6_addr *) addr;
420 119 : for (i = 0; i < 16; i++) {
421 224 : if ((addr6->s6_addr[i] &
422 112 : client->mask6.s6_addr[i]) !=
423 112 : (client->addr6.s6_addr[i] &
424 : client->mask6.s6_addr[i])) {
425 0 : i = 17;
426 0 : break;
427 : }
428 : }
429 7 : if (i == 16) {
430 7 : break;
431 : }
432 : }
433 : #endif /* CONFIG_IPV6 */
434 6600 : if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) ==
435 3300 : (addr->s_addr & client->mask.s_addr)) {
436 3300 : break;
437 : }
438 :
439 0 : client = client->next;
440 : }
441 :
442 3307 : return client;
443 : }
444 :
445 :
446 : static struct radius_session *
447 2156 : radius_server_get_session(struct radius_client *client, unsigned int sess_id)
448 : {
449 2156 : struct radius_session *sess = client->sessions;
450 :
451 4321 : while (sess) {
452 2165 : if (sess->sess_id == sess_id) {
453 2156 : break;
454 : }
455 9 : sess = sess->next;
456 : }
457 :
458 2156 : return sess;
459 : }
460 :
461 :
462 683 : static void radius_server_session_free(struct radius_server_data *data,
463 : struct radius_session *sess)
464 : {
465 683 : eloop_cancel_timeout(radius_server_session_timeout, data, sess);
466 683 : eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
467 683 : eap_server_sm_deinit(sess->eap);
468 683 : radius_msg_free(sess->last_msg);
469 683 : os_free(sess->last_from_addr);
470 683 : radius_msg_free(sess->last_reply);
471 683 : os_free(sess->username);
472 683 : os_free(sess->nas_ip);
473 683 : os_free(sess);
474 683 : data->num_sess--;
475 683 : }
476 :
477 :
478 650 : static void radius_server_session_remove(struct radius_server_data *data,
479 : struct radius_session *sess)
480 : {
481 650 : struct radius_client *client = sess->client;
482 : struct radius_session *session, *prev;
483 :
484 650 : eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
485 :
486 650 : prev = NULL;
487 650 : session = client->sessions;
488 6822 : while (session) {
489 6172 : if (session == sess) {
490 650 : if (prev == NULL) {
491 45 : client->sessions = sess->next;
492 : } else {
493 605 : prev->next = sess->next;
494 : }
495 650 : radius_server_session_free(data, sess);
496 650 : break;
497 : }
498 5522 : prev = session;
499 5522 : session = session->next;
500 : }
501 650 : }
502 :
503 :
504 629 : static void radius_server_session_remove_timeout(void *eloop_ctx,
505 : void *timeout_ctx)
506 : {
507 629 : struct radius_server_data *data = eloop_ctx;
508 629 : struct radius_session *sess = timeout_ctx;
509 629 : RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id);
510 629 : radius_server_session_remove(data, sess);
511 629 : }
512 :
513 :
514 21 : static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx)
515 : {
516 21 : struct radius_server_data *data = eloop_ctx;
517 21 : struct radius_session *sess = timeout_ctx;
518 :
519 21 : RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id);
520 21 : radius_server_session_remove(data, sess);
521 21 : }
522 :
523 :
524 : static struct radius_session *
525 683 : radius_server_new_session(struct radius_server_data *data,
526 : struct radius_client *client)
527 : {
528 : struct radius_session *sess;
529 :
530 683 : if (data->num_sess >= RADIUS_MAX_SESSION) {
531 0 : RADIUS_DEBUG("Maximum number of existing session - no room "
532 : "for a new session");
533 0 : return NULL;
534 : }
535 :
536 683 : sess = os_zalloc(sizeof(*sess));
537 683 : if (sess == NULL)
538 0 : return NULL;
539 :
540 683 : sess->server = data;
541 683 : sess->client = client;
542 683 : sess->sess_id = data->next_sess_id++;
543 683 : sess->next = client->sessions;
544 683 : client->sessions = sess;
545 683 : eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0,
546 : radius_server_session_timeout, data, sess);
547 683 : data->num_sess++;
548 683 : return sess;
549 : }
550 :
551 :
552 : #ifdef CONFIG_TESTING_OPTIONS
553 0 : static void radius_server_testing_options_tls(struct radius_session *sess,
554 : const char *tls,
555 : struct eap_config *eap_conf)
556 : {
557 0 : int test = atoi(tls);
558 :
559 0 : switch (test) {
560 : case 1:
561 0 : srv_log(sess, "TLS test - break VerifyData");
562 0 : eap_conf->tls_test_flags = TLS_BREAK_VERIFY_DATA;
563 0 : break;
564 : case 2:
565 0 : srv_log(sess, "TLS test - break ServerKeyExchange ServerParams hash");
566 0 : eap_conf->tls_test_flags = TLS_BREAK_SRV_KEY_X_HASH;
567 0 : break;
568 : case 3:
569 0 : srv_log(sess, "TLS test - break ServerKeyExchange ServerParams Signature");
570 0 : eap_conf->tls_test_flags = TLS_BREAK_SRV_KEY_X_SIGNATURE;
571 0 : break;
572 : case 4:
573 0 : srv_log(sess, "TLS test - RSA-DHE using a short 511-bit prime");
574 0 : eap_conf->tls_test_flags = TLS_DHE_PRIME_511B;
575 0 : break;
576 : case 5:
577 0 : srv_log(sess, "TLS test - RSA-DHE using a short 767-bit prime");
578 0 : eap_conf->tls_test_flags = TLS_DHE_PRIME_767B;
579 0 : break;
580 : case 6:
581 0 : srv_log(sess, "TLS test - RSA-DHE using a bogus 15 \"prime\"");
582 0 : eap_conf->tls_test_flags = TLS_DHE_PRIME_15;
583 0 : break;
584 : case 7:
585 0 : srv_log(sess, "TLS test - RSA-DHE using a short 58-bit prime in long container");
586 0 : eap_conf->tls_test_flags = TLS_DHE_PRIME_58B;
587 0 : break;
588 : case 8:
589 0 : srv_log(sess, "TLS test - RSA-DHE using a non-prime");
590 0 : eap_conf->tls_test_flags = TLS_DHE_NON_PRIME;
591 0 : break;
592 : default:
593 0 : srv_log(sess, "Unrecognized TLS test");
594 0 : break;
595 : }
596 0 : }
597 : #endif /* CONFIG_TESTING_OPTIONS */
598 :
599 683 : static void radius_server_testing_options(struct radius_session *sess,
600 : struct eap_config *eap_conf)
601 : {
602 : #ifdef CONFIG_TESTING_OPTIONS
603 : const char *pos;
604 :
605 683 : pos = os_strstr(sess->username, "@test-");
606 683 : if (pos == NULL)
607 1366 : return;
608 0 : pos += 6;
609 0 : if (os_strncmp(pos, "tls-", 4) == 0)
610 0 : radius_server_testing_options_tls(sess, pos + 4, eap_conf);
611 : else
612 0 : srv_log(sess, "Unrecognized test: %s", pos);
613 : #endif /* CONFIG_TESTING_OPTIONS */
614 : }
615 :
616 :
617 : static struct radius_session *
618 684 : radius_server_get_new_session(struct radius_server_data *data,
619 : struct radius_client *client,
620 : struct radius_msg *msg, const char *from_addr)
621 : {
622 : u8 *user;
623 : size_t user_len;
624 : int res;
625 : struct radius_session *sess;
626 : struct eap_config eap_conf;
627 : struct eap_user tmp;
628 :
629 684 : RADIUS_DEBUG("Creating a new session");
630 :
631 684 : if (radius_msg_get_attr_ptr(msg, RADIUS_ATTR_USER_NAME, &user,
632 : &user_len, NULL) < 0) {
633 1 : RADIUS_DEBUG("Could not get User-Name");
634 1 : return NULL;
635 : }
636 683 : RADIUS_DUMP_ASCII("User-Name", user, user_len);
637 :
638 683 : os_memset(&tmp, 0, sizeof(tmp));
639 683 : res = data->get_eap_user(data->conf_ctx, user, user_len, 0, &tmp);
640 683 : bin_clear_free(tmp.password, tmp.password_len);
641 :
642 683 : if (res != 0) {
643 0 : RADIUS_DEBUG("User-Name not found from user database");
644 0 : return NULL;
645 : }
646 :
647 683 : RADIUS_DEBUG("Matching user entry found");
648 683 : sess = radius_server_new_session(data, client);
649 683 : if (sess == NULL) {
650 0 : RADIUS_DEBUG("Failed to create a new session");
651 0 : return NULL;
652 : }
653 683 : sess->accept_attr = tmp.accept_attr;
654 683 : sess->macacl = tmp.macacl;
655 :
656 683 : sess->username = os_malloc(user_len * 4 + 1);
657 683 : if (sess->username == NULL) {
658 0 : radius_server_session_free(data, sess);
659 0 : return NULL;
660 : }
661 683 : printf_encode(sess->username, user_len * 4 + 1, user, user_len);
662 :
663 683 : sess->nas_ip = os_strdup(from_addr);
664 683 : if (sess->nas_ip == NULL) {
665 0 : radius_server_session_free(data, sess);
666 0 : return NULL;
667 : }
668 :
669 683 : srv_log(sess, "New session created");
670 :
671 683 : os_memset(&eap_conf, 0, sizeof(eap_conf));
672 683 : eap_conf.ssl_ctx = data->ssl_ctx;
673 683 : eap_conf.msg_ctx = data->msg_ctx;
674 683 : eap_conf.eap_sim_db_priv = data->eap_sim_db_priv;
675 683 : eap_conf.backend_auth = TRUE;
676 683 : eap_conf.eap_server = 1;
677 683 : eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key;
678 683 : eap_conf.eap_fast_a_id = data->eap_fast_a_id;
679 683 : eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len;
680 683 : eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info;
681 683 : eap_conf.eap_fast_prov = data->eap_fast_prov;
682 683 : eap_conf.pac_key_lifetime = data->pac_key_lifetime;
683 683 : eap_conf.pac_key_refresh_time = data->pac_key_refresh_time;
684 683 : eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind;
685 683 : eap_conf.tnc = data->tnc;
686 683 : eap_conf.wps = data->wps;
687 683 : eap_conf.pwd_group = data->pwd_group;
688 683 : eap_conf.server_id = (const u8 *) data->server_id;
689 683 : eap_conf.server_id_len = os_strlen(data->server_id);
690 683 : eap_conf.erp = data->erp;
691 683 : radius_server_testing_options(sess, &eap_conf);
692 683 : sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb,
693 : &eap_conf);
694 683 : if (sess->eap == NULL) {
695 0 : RADIUS_DEBUG("Failed to initialize EAP state machine for the "
696 : "new session");
697 0 : radius_server_session_free(data, sess);
698 0 : return NULL;
699 : }
700 683 : sess->eap_if = eap_get_interface(sess->eap);
701 683 : sess->eap_if->eapRestart = TRUE;
702 683 : sess->eap_if->portEnabled = TRUE;
703 :
704 683 : RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id);
705 :
706 683 : return sess;
707 : }
708 :
709 :
710 : static struct radius_msg *
711 2824 : radius_server_encapsulate_eap(struct radius_server_data *data,
712 : struct radius_client *client,
713 : struct radius_session *sess,
714 : struct radius_msg *request)
715 : {
716 : struct radius_msg *msg;
717 : int code;
718 : unsigned int sess_id;
719 2824 : struct radius_hdr *hdr = radius_msg_get_hdr(request);
720 :
721 2824 : if (sess->eap_if->eapFail) {
722 92 : sess->eap_if->eapFail = FALSE;
723 92 : code = RADIUS_CODE_ACCESS_REJECT;
724 2732 : } else if (sess->eap_if->eapSuccess) {
725 570 : sess->eap_if->eapSuccess = FALSE;
726 570 : code = RADIUS_CODE_ACCESS_ACCEPT;
727 : } else {
728 2162 : sess->eap_if->eapReq = FALSE;
729 2162 : code = RADIUS_CODE_ACCESS_CHALLENGE;
730 : }
731 :
732 2824 : msg = radius_msg_new(code, hdr->identifier);
733 2824 : if (msg == NULL) {
734 0 : RADIUS_DEBUG("Failed to allocate reply message");
735 0 : return NULL;
736 : }
737 :
738 2824 : sess_id = htonl(sess->sess_id);
739 4986 : if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
740 2162 : !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
741 : (u8 *) &sess_id, sizeof(sess_id))) {
742 0 : RADIUS_DEBUG("Failed to add State attribute");
743 : }
744 :
745 5648 : if (sess->eap_if->eapReqData &&
746 2824 : !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
747 2824 : wpabuf_len(sess->eap_if->eapReqData))) {
748 0 : RADIUS_DEBUG("Failed to add EAP-Message attribute");
749 : }
750 :
751 2824 : if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
752 : int len;
753 : #ifdef CONFIG_RADIUS_TEST
754 : if (data->dump_msk_file) {
755 : FILE *f;
756 : char buf[2 * 64 + 1];
757 : f = fopen(data->dump_msk_file, "a");
758 : if (f) {
759 : len = sess->eap_if->eapKeyDataLen;
760 : if (len > 64)
761 : len = 64;
762 : len = wpa_snprintf_hex(
763 : buf, sizeof(buf),
764 : sess->eap_if->eapKeyData, len);
765 : buf[len] = '\0';
766 : fprintf(f, "%s\n", buf);
767 : fclose(f);
768 : }
769 : }
770 : #endif /* CONFIG_RADIUS_TEST */
771 570 : if (sess->eap_if->eapKeyDataLen > 64) {
772 0 : len = 32;
773 : } else {
774 570 : len = sess->eap_if->eapKeyDataLen / 2;
775 : }
776 2850 : if (!radius_msg_add_mppe_keys(msg, hdr->authenticator,
777 570 : (u8 *) client->shared_secret,
778 570 : client->shared_secret_len,
779 570 : sess->eap_if->eapKeyData + len,
780 570 : len, sess->eap_if->eapKeyData,
781 : len)) {
782 0 : RADIUS_DEBUG("Failed to add MPPE key attributes");
783 : }
784 : }
785 :
786 : #ifdef CONFIG_HS20
787 2825 : if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->remediation &&
788 2 : data->subscr_remediation_url) {
789 : u8 *buf;
790 1 : size_t url_len = os_strlen(data->subscr_remediation_url);
791 1 : buf = os_malloc(1 + url_len);
792 1 : if (buf == NULL) {
793 0 : radius_msg_free(msg);
794 0 : return NULL;
795 : }
796 1 : buf[0] = data->subscr_remediation_method;
797 1 : os_memcpy(&buf[1], data->subscr_remediation_url, url_len);
798 1 : if (!radius_msg_add_wfa(
799 : msg, RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION,
800 : buf, 1 + url_len)) {
801 0 : RADIUS_DEBUG("Failed to add WFA-HS20-SubscrRem");
802 : }
803 1 : os_free(buf);
804 2823 : } else if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->remediation) {
805 : u8 buf[1];
806 0 : if (!radius_msg_add_wfa(
807 : msg, RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION,
808 : buf, 0)) {
809 0 : RADIUS_DEBUG("Failed to add WFA-HS20-SubscrRem");
810 : }
811 : }
812 : #endif /* CONFIG_HS20 */
813 :
814 2824 : if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
815 0 : RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
816 0 : radius_msg_free(msg);
817 0 : return NULL;
818 : }
819 :
820 2824 : if (code == RADIUS_CODE_ACCESS_ACCEPT) {
821 : struct hostapd_radius_attr *attr;
822 609 : for (attr = sess->accept_attr; attr; attr = attr->next) {
823 78 : if (!radius_msg_add_attr(msg, attr->type,
824 39 : wpabuf_head(attr->val),
825 39 : wpabuf_len(attr->val))) {
826 0 : wpa_printf(MSG_ERROR, "Could not add RADIUS attribute");
827 0 : radius_msg_free(msg);
828 0 : return NULL;
829 : }
830 : }
831 : }
832 :
833 2824 : if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
834 2824 : client->shared_secret_len,
835 2824 : hdr->authenticator) < 0) {
836 0 : RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
837 : }
838 :
839 2824 : return msg;
840 : }
841 :
842 :
843 : static struct radius_msg *
844 3 : radius_server_macacl(struct radius_server_data *data,
845 : struct radius_client *client,
846 : struct radius_session *sess,
847 : struct radius_msg *request)
848 : {
849 : struct radius_msg *msg;
850 : int code;
851 3 : struct radius_hdr *hdr = radius_msg_get_hdr(request);
852 : u8 *pw;
853 : size_t pw_len;
854 :
855 3 : code = RADIUS_CODE_ACCESS_ACCEPT;
856 :
857 3 : if (radius_msg_get_attr_ptr(request, RADIUS_ATTR_USER_PASSWORD, &pw,
858 : &pw_len, NULL) < 0) {
859 0 : RADIUS_DEBUG("Could not get User-Password");
860 0 : code = RADIUS_CODE_ACCESS_REJECT;
861 : } else {
862 : int res;
863 : struct eap_user tmp;
864 :
865 3 : os_memset(&tmp, 0, sizeof(tmp));
866 6 : res = data->get_eap_user(data->conf_ctx, (u8 *) sess->username,
867 3 : os_strlen(sess->username), 0, &tmp);
868 3 : if (res || !tmp.macacl || tmp.password == NULL) {
869 0 : RADIUS_DEBUG("No MAC ACL user entry");
870 0 : bin_clear_free(tmp.password, tmp.password_len);
871 0 : code = RADIUS_CODE_ACCESS_REJECT;
872 : } else {
873 : u8 buf[128];
874 9 : res = radius_user_password_hide(
875 3 : request, tmp.password, tmp.password_len,
876 3 : (u8 *) client->shared_secret,
877 3 : client->shared_secret_len,
878 : buf, sizeof(buf));
879 3 : bin_clear_free(tmp.password, tmp.password_len);
880 :
881 6 : if (res < 0 || pw_len != (size_t) res ||
882 3 : os_memcmp_const(pw, buf, res) != 0) {
883 0 : RADIUS_DEBUG("Incorrect User-Password");
884 0 : code = RADIUS_CODE_ACCESS_REJECT;
885 : }
886 : }
887 : }
888 :
889 3 : msg = radius_msg_new(code, hdr->identifier);
890 3 : if (msg == NULL) {
891 0 : RADIUS_DEBUG("Failed to allocate reply message");
892 0 : return NULL;
893 : }
894 :
895 3 : if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
896 0 : RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
897 0 : radius_msg_free(msg);
898 0 : return NULL;
899 : }
900 :
901 3 : if (code == RADIUS_CODE_ACCESS_ACCEPT) {
902 : struct hostapd_radius_attr *attr;
903 4 : for (attr = sess->accept_attr; attr; attr = attr->next) {
904 2 : if (!radius_msg_add_attr(msg, attr->type,
905 1 : wpabuf_head(attr->val),
906 1 : wpabuf_len(attr->val))) {
907 0 : wpa_printf(MSG_ERROR, "Could not add RADIUS attribute");
908 0 : radius_msg_free(msg);
909 0 : return NULL;
910 : }
911 : }
912 : }
913 :
914 3 : if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
915 3 : client->shared_secret_len,
916 3 : hdr->authenticator) < 0) {
917 0 : RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
918 : }
919 :
920 3 : return msg;
921 : }
922 :
923 :
924 1 : static int radius_server_reject(struct radius_server_data *data,
925 : struct radius_client *client,
926 : struct radius_msg *request,
927 : struct sockaddr *from, socklen_t fromlen,
928 : const char *from_addr, int from_port)
929 : {
930 : struct radius_msg *msg;
931 1 : int ret = 0;
932 : struct eap_hdr eapfail;
933 : struct wpabuf *buf;
934 1 : struct radius_hdr *hdr = radius_msg_get_hdr(request);
935 :
936 1 : RADIUS_DEBUG("Reject invalid request from %s:%d",
937 : from_addr, from_port);
938 :
939 1 : msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT, hdr->identifier);
940 1 : if (msg == NULL) {
941 0 : return -1;
942 : }
943 :
944 1 : os_memset(&eapfail, 0, sizeof(eapfail));
945 1 : eapfail.code = EAP_CODE_FAILURE;
946 1 : eapfail.identifier = 0;
947 1 : eapfail.length = host_to_be16(sizeof(eapfail));
948 :
949 1 : if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
950 0 : RADIUS_DEBUG("Failed to add EAP-Message attribute");
951 : }
952 :
953 1 : if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
954 0 : RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
955 0 : radius_msg_free(msg);
956 0 : return -1;
957 : }
958 :
959 1 : if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
960 1 : client->shared_secret_len,
961 1 : hdr->authenticator) <
962 : 0) {
963 0 : RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
964 : }
965 :
966 1 : if (wpa_debug_level <= MSG_MSGDUMP) {
967 1 : radius_msg_dump(msg);
968 : }
969 :
970 1 : data->counters.access_rejects++;
971 1 : client->counters.access_rejects++;
972 1 : buf = radius_msg_get_buf(msg);
973 1 : if (sendto(data->auth_sock, wpabuf_head(buf), wpabuf_len(buf), 0,
974 : (struct sockaddr *) from, sizeof(*from)) < 0) {
975 0 : wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s", strerror(errno));
976 0 : ret = -1;
977 : }
978 :
979 1 : radius_msg_free(msg);
980 :
981 1 : return ret;
982 : }
983 :
984 :
985 2918 : static int radius_server_request(struct radius_server_data *data,
986 : struct radius_msg *msg,
987 : struct sockaddr *from, socklen_t fromlen,
988 : struct radius_client *client,
989 : const char *from_addr, int from_port,
990 : struct radius_session *force_sess)
991 : {
992 2918 : struct wpabuf *eap = NULL;
993 2918 : int res, state_included = 0;
994 : u8 statebuf[4];
995 : unsigned int state;
996 : struct radius_session *sess;
997 : struct radius_msg *reply;
998 2918 : int is_complete = 0;
999 :
1000 2918 : if (force_sess)
1001 78 : sess = force_sess;
1002 : else {
1003 2840 : res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf,
1004 : sizeof(statebuf));
1005 2840 : state_included = res >= 0;
1006 2840 : if (res == sizeof(statebuf)) {
1007 2156 : state = WPA_GET_BE32(statebuf);
1008 2156 : sess = radius_server_get_session(client, state);
1009 : } else {
1010 684 : sess = NULL;
1011 : }
1012 : }
1013 :
1014 2918 : if (sess) {
1015 2234 : RADIUS_DEBUG("Request for session 0x%x", sess->sess_id);
1016 684 : } else if (state_included) {
1017 0 : RADIUS_DEBUG("State attribute included but no session found");
1018 0 : radius_server_reject(data, client, msg, from, fromlen,
1019 : from_addr, from_port);
1020 0 : return -1;
1021 : } else {
1022 684 : sess = radius_server_get_new_session(data, client, msg,
1023 : from_addr);
1024 684 : if (sess == NULL) {
1025 1 : RADIUS_DEBUG("Could not create a new session");
1026 1 : radius_server_reject(data, client, msg, from, fromlen,
1027 : from_addr, from_port);
1028 1 : return -1;
1029 : }
1030 : }
1031 :
1032 5151 : if (sess->last_from_port == from_port &&
1033 2242 : sess->last_identifier == radius_msg_get_hdr(msg)->identifier &&
1034 8 : os_memcmp(sess->last_authenticator,
1035 : radius_msg_get_hdr(msg)->authenticator, 16) == 0) {
1036 8 : RADIUS_DEBUG("Duplicate message from %s", from_addr);
1037 8 : data->counters.dup_access_requests++;
1038 8 : client->counters.dup_access_requests++;
1039 :
1040 8 : if (sess->last_reply) {
1041 : struct wpabuf *buf;
1042 8 : buf = radius_msg_get_buf(sess->last_reply);
1043 8 : res = sendto(data->auth_sock, wpabuf_head(buf),
1044 : wpabuf_len(buf), 0,
1045 : (struct sockaddr *) from, fromlen);
1046 8 : if (res < 0) {
1047 0 : wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s",
1048 0 : strerror(errno));
1049 : }
1050 8 : return 0;
1051 : }
1052 :
1053 0 : RADIUS_DEBUG("No previous reply available for duplicate "
1054 : "message");
1055 0 : return -1;
1056 : }
1057 :
1058 2909 : eap = radius_msg_get_eap(msg);
1059 2909 : if (eap == NULL && sess->macacl) {
1060 3 : reply = radius_server_macacl(data, client, sess, msg);
1061 3 : if (reply == NULL)
1062 0 : return -1;
1063 3 : goto send_reply;
1064 : }
1065 2906 : if (eap == NULL) {
1066 0 : RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s",
1067 : from_addr);
1068 0 : data->counters.packets_dropped++;
1069 0 : client->counters.packets_dropped++;
1070 0 : return -1;
1071 : }
1072 :
1073 2906 : RADIUS_DUMP("Received EAP data", wpabuf_head(eap), wpabuf_len(eap));
1074 :
1075 : /* FIX: if Code is Request, Success, or Failure, send Access-Reject;
1076 : * RFC3579 Sect. 2.6.2.
1077 : * Include EAP-Response/Nak with no preferred method if
1078 : * code == request.
1079 : * If code is not 1-4, discard the packet silently.
1080 : * Or is this already done by the EAP state machine? */
1081 :
1082 2906 : wpabuf_free(sess->eap_if->eapRespData);
1083 2906 : sess->eap_if->eapRespData = eap;
1084 2906 : sess->eap_if->eapResp = TRUE;
1085 2906 : eap_server_sm_step(sess->eap);
1086 :
1087 3080 : if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess ||
1088 2998 : sess->eap_if->eapFail) && sess->eap_if->eapReqData) {
1089 2824 : RADIUS_DUMP("EAP data from the state machine",
1090 : wpabuf_head(sess->eap_if->eapReqData),
1091 : wpabuf_len(sess->eap_if->eapReqData));
1092 82 : } else if (sess->eap_if->eapFail) {
1093 0 : RADIUS_DEBUG("No EAP data from the state machine, but eapFail "
1094 : "set");
1095 82 : } else if (eap_sm_method_pending(sess->eap)) {
1096 78 : radius_msg_free(sess->last_msg);
1097 78 : sess->last_msg = msg;
1098 78 : sess->last_from_port = from_port;
1099 78 : os_free(sess->last_from_addr);
1100 78 : sess->last_from_addr = os_strdup(from_addr);
1101 78 : sess->last_fromlen = fromlen;
1102 78 : os_memcpy(&sess->last_from, from, fromlen);
1103 78 : return -2;
1104 : } else {
1105 4 : RADIUS_DEBUG("No EAP data from the state machine - ignore this"
1106 : " Access-Request silently (assuming it was a "
1107 : "duplicate)");
1108 4 : data->counters.packets_dropped++;
1109 4 : client->counters.packets_dropped++;
1110 4 : return -1;
1111 : }
1112 :
1113 2824 : if (sess->eap_if->eapSuccess || sess->eap_if->eapFail)
1114 662 : is_complete = 1;
1115 2824 : if (sess->eap_if->eapFail)
1116 92 : srv_log(sess, "EAP authentication failed");
1117 2732 : else if (sess->eap_if->eapSuccess)
1118 570 : srv_log(sess, "EAP authentication succeeded");
1119 :
1120 2824 : reply = radius_server_encapsulate_eap(data, client, sess, msg);
1121 :
1122 : send_reply:
1123 2827 : if (reply) {
1124 : struct wpabuf *buf;
1125 : struct radius_hdr *hdr;
1126 :
1127 2827 : RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port);
1128 2827 : if (wpa_debug_level <= MSG_MSGDUMP) {
1129 2827 : radius_msg_dump(reply);
1130 : }
1131 :
1132 2827 : switch (radius_msg_get_hdr(reply)->code) {
1133 : case RADIUS_CODE_ACCESS_ACCEPT:
1134 573 : srv_log(sess, "Sending Access-Accept");
1135 573 : data->counters.access_accepts++;
1136 573 : client->counters.access_accepts++;
1137 573 : break;
1138 : case RADIUS_CODE_ACCESS_REJECT:
1139 92 : srv_log(sess, "Sending Access-Reject");
1140 92 : data->counters.access_rejects++;
1141 92 : client->counters.access_rejects++;
1142 92 : break;
1143 : case RADIUS_CODE_ACCESS_CHALLENGE:
1144 2162 : data->counters.access_challenges++;
1145 2162 : client->counters.access_challenges++;
1146 2162 : break;
1147 : }
1148 2827 : buf = radius_msg_get_buf(reply);
1149 2827 : res = sendto(data->auth_sock, wpabuf_head(buf),
1150 : wpabuf_len(buf), 0,
1151 : (struct sockaddr *) from, fromlen);
1152 2827 : if (res < 0) {
1153 0 : wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s",
1154 0 : strerror(errno));
1155 : }
1156 2827 : radius_msg_free(sess->last_reply);
1157 2827 : sess->last_reply = reply;
1158 2827 : sess->last_from_port = from_port;
1159 2827 : hdr = radius_msg_get_hdr(msg);
1160 2827 : sess->last_identifier = hdr->identifier;
1161 2827 : os_memcpy(sess->last_authenticator, hdr->authenticator, 16);
1162 : } else {
1163 0 : data->counters.packets_dropped++;
1164 0 : client->counters.packets_dropped++;
1165 : }
1166 :
1167 2827 : if (is_complete) {
1168 662 : RADIUS_DEBUG("Removing completed session 0x%x after timeout",
1169 : sess->sess_id);
1170 662 : eloop_cancel_timeout(radius_server_session_remove_timeout,
1171 : data, sess);
1172 662 : eloop_register_timeout(10, 0,
1173 : radius_server_session_remove_timeout,
1174 : data, sess);
1175 : }
1176 :
1177 2827 : return 0;
1178 : }
1179 :
1180 :
1181 2841 : static void radius_server_receive_auth(int sock, void *eloop_ctx,
1182 : void *sock_ctx)
1183 : {
1184 2841 : struct radius_server_data *data = eloop_ctx;
1185 2841 : u8 *buf = NULL;
1186 : union {
1187 : struct sockaddr_storage ss;
1188 : struct sockaddr_in sin;
1189 : #ifdef CONFIG_IPV6
1190 : struct sockaddr_in6 sin6;
1191 : #endif /* CONFIG_IPV6 */
1192 : } from;
1193 : socklen_t fromlen;
1194 : int len;
1195 2841 : struct radius_client *client = NULL;
1196 2841 : struct radius_msg *msg = NULL;
1197 : char abuf[50];
1198 2841 : int from_port = 0;
1199 :
1200 2841 : buf = os_malloc(RADIUS_MAX_MSG_LEN);
1201 2841 : if (buf == NULL) {
1202 0 : goto fail;
1203 : }
1204 :
1205 2841 : fromlen = sizeof(from);
1206 2841 : len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
1207 : (struct sockaddr *) &from.ss, &fromlen);
1208 2841 : if (len < 0) {
1209 0 : wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s",
1210 0 : strerror(errno));
1211 0 : goto fail;
1212 : }
1213 :
1214 : #ifdef CONFIG_IPV6
1215 2841 : if (data->ipv6) {
1216 3 : if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf,
1217 : sizeof(abuf)) == NULL)
1218 0 : abuf[0] = '\0';
1219 3 : from_port = ntohs(from.sin6.sin6_port);
1220 3 : RADIUS_DEBUG("Received %d bytes from %s:%d",
1221 : len, abuf, from_port);
1222 :
1223 3 : client = radius_server_get_client(data,
1224 : (struct in_addr *)
1225 : &from.sin6.sin6_addr, 1);
1226 : }
1227 : #endif /* CONFIG_IPV6 */
1228 :
1229 2841 : if (!data->ipv6) {
1230 2838 : os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf));
1231 2838 : from_port = ntohs(from.sin.sin_port);
1232 2838 : RADIUS_DEBUG("Received %d bytes from %s:%d",
1233 : len, abuf, from_port);
1234 :
1235 2838 : client = radius_server_get_client(data, &from.sin.sin_addr, 0);
1236 : }
1237 :
1238 2841 : RADIUS_DUMP("Received data", buf, len);
1239 :
1240 2841 : if (client == NULL) {
1241 0 : RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
1242 0 : data->counters.invalid_requests++;
1243 0 : goto fail;
1244 : }
1245 :
1246 2841 : msg = radius_msg_parse(buf, len);
1247 2841 : if (msg == NULL) {
1248 0 : RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
1249 0 : data->counters.malformed_access_requests++;
1250 0 : client->counters.malformed_access_requests++;
1251 0 : goto fail;
1252 : }
1253 :
1254 2841 : os_free(buf);
1255 2841 : buf = NULL;
1256 :
1257 2841 : if (wpa_debug_level <= MSG_MSGDUMP) {
1258 2841 : radius_msg_dump(msg);
1259 : }
1260 :
1261 2841 : if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCESS_REQUEST) {
1262 0 : RADIUS_DEBUG("Unexpected RADIUS code %d",
1263 : radius_msg_get_hdr(msg)->code);
1264 0 : data->counters.unknown_types++;
1265 0 : client->counters.unknown_types++;
1266 0 : goto fail;
1267 : }
1268 :
1269 2841 : data->counters.access_requests++;
1270 2841 : client->counters.access_requests++;
1271 :
1272 2841 : if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret,
1273 2841 : client->shared_secret_len, NULL)) {
1274 1 : RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf);
1275 1 : data->counters.bad_authenticators++;
1276 1 : client->counters.bad_authenticators++;
1277 1 : goto fail;
1278 : }
1279 :
1280 2840 : if (radius_server_request(data, msg, (struct sockaddr *) &from,
1281 : fromlen, client, abuf, from_port, NULL) ==
1282 : -2)
1283 2919 : return; /* msg was stored with the session */
1284 :
1285 : fail:
1286 2763 : radius_msg_free(msg);
1287 2763 : os_free(buf);
1288 : }
1289 :
1290 :
1291 466 : static void radius_server_receive_acct(int sock, void *eloop_ctx,
1292 : void *sock_ctx)
1293 : {
1294 466 : struct radius_server_data *data = eloop_ctx;
1295 466 : u8 *buf = NULL;
1296 : union {
1297 : struct sockaddr_storage ss;
1298 : struct sockaddr_in sin;
1299 : #ifdef CONFIG_IPV6
1300 : struct sockaddr_in6 sin6;
1301 : #endif /* CONFIG_IPV6 */
1302 : } from;
1303 : socklen_t fromlen;
1304 : int len, res;
1305 466 : struct radius_client *client = NULL;
1306 466 : struct radius_msg *msg = NULL, *resp = NULL;
1307 : char abuf[50];
1308 466 : int from_port = 0;
1309 : struct radius_hdr *hdr;
1310 : struct wpabuf *rbuf;
1311 :
1312 466 : buf = os_malloc(RADIUS_MAX_MSG_LEN);
1313 466 : if (buf == NULL) {
1314 0 : goto fail;
1315 : }
1316 :
1317 466 : fromlen = sizeof(from);
1318 466 : len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
1319 : (struct sockaddr *) &from.ss, &fromlen);
1320 466 : if (len < 0) {
1321 0 : wpa_printf(MSG_INFO, "recvfrom[radius_server]: %s",
1322 0 : strerror(errno));
1323 0 : goto fail;
1324 : }
1325 :
1326 : #ifdef CONFIG_IPV6
1327 466 : if (data->ipv6) {
1328 4 : if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf,
1329 : sizeof(abuf)) == NULL)
1330 0 : abuf[0] = '\0';
1331 4 : from_port = ntohs(from.sin6.sin6_port);
1332 4 : RADIUS_DEBUG("Received %d bytes from %s:%d",
1333 : len, abuf, from_port);
1334 :
1335 4 : client = radius_server_get_client(data,
1336 : (struct in_addr *)
1337 : &from.sin6.sin6_addr, 1);
1338 : }
1339 : #endif /* CONFIG_IPV6 */
1340 :
1341 466 : if (!data->ipv6) {
1342 462 : os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf));
1343 462 : from_port = ntohs(from.sin.sin_port);
1344 462 : RADIUS_DEBUG("Received %d bytes from %s:%d",
1345 : len, abuf, from_port);
1346 :
1347 462 : client = radius_server_get_client(data, &from.sin.sin_addr, 0);
1348 : }
1349 :
1350 466 : RADIUS_DUMP("Received data", buf, len);
1351 :
1352 466 : if (client == NULL) {
1353 0 : RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
1354 0 : data->counters.invalid_acct_requests++;
1355 0 : goto fail;
1356 : }
1357 :
1358 466 : msg = radius_msg_parse(buf, len);
1359 466 : if (msg == NULL) {
1360 0 : RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
1361 0 : data->counters.malformed_acct_requests++;
1362 0 : client->counters.malformed_acct_requests++;
1363 0 : goto fail;
1364 : }
1365 :
1366 466 : os_free(buf);
1367 466 : buf = NULL;
1368 :
1369 466 : if (wpa_debug_level <= MSG_MSGDUMP) {
1370 466 : radius_msg_dump(msg);
1371 : }
1372 :
1373 466 : if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCOUNTING_REQUEST) {
1374 0 : RADIUS_DEBUG("Unexpected RADIUS code %d",
1375 : radius_msg_get_hdr(msg)->code);
1376 0 : data->counters.unknown_acct_types++;
1377 0 : client->counters.unknown_acct_types++;
1378 0 : goto fail;
1379 : }
1380 :
1381 466 : data->counters.acct_requests++;
1382 466 : client->counters.acct_requests++;
1383 :
1384 466 : if (radius_msg_verify_acct_req(msg, (u8 *) client->shared_secret,
1385 466 : client->shared_secret_len)) {
1386 1 : RADIUS_DEBUG("Invalid Authenticator from %s", abuf);
1387 1 : data->counters.acct_bad_authenticators++;
1388 1 : client->counters.acct_bad_authenticators++;
1389 1 : goto fail;
1390 : }
1391 :
1392 : /* TODO: Write accounting information to a file or database */
1393 :
1394 465 : hdr = radius_msg_get_hdr(msg);
1395 :
1396 465 : resp = radius_msg_new(RADIUS_CODE_ACCOUNTING_RESPONSE, hdr->identifier);
1397 465 : if (resp == NULL)
1398 0 : goto fail;
1399 :
1400 465 : radius_msg_finish_acct_resp(resp, (u8 *) client->shared_secret,
1401 465 : client->shared_secret_len,
1402 465 : hdr->authenticator);
1403 :
1404 465 : RADIUS_DEBUG("Reply to %s:%d", abuf, from_port);
1405 465 : if (wpa_debug_level <= MSG_MSGDUMP) {
1406 465 : radius_msg_dump(resp);
1407 : }
1408 465 : rbuf = radius_msg_get_buf(resp);
1409 465 : data->counters.acct_responses++;
1410 465 : client->counters.acct_responses++;
1411 465 : res = sendto(data->acct_sock, wpabuf_head(rbuf), wpabuf_len(rbuf), 0,
1412 : (struct sockaddr *) &from.ss, fromlen);
1413 465 : if (res < 0) {
1414 0 : wpa_printf(MSG_INFO, "sendto[RADIUS SRV]: %s",
1415 0 : strerror(errno));
1416 : }
1417 :
1418 : fail:
1419 466 : radius_msg_free(resp);
1420 466 : radius_msg_free(msg);
1421 466 : os_free(buf);
1422 466 : }
1423 :
1424 :
1425 20 : static int radius_server_disable_pmtu_discovery(int s)
1426 : {
1427 20 : int r = -1;
1428 : #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
1429 : /* Turn off Path MTU discovery on IPv4/UDP sockets. */
1430 20 : int action = IP_PMTUDISC_DONT;
1431 20 : r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action,
1432 : sizeof(action));
1433 20 : if (r == -1)
1434 0 : wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: "
1435 0 : "%s", strerror(errno));
1436 : #endif
1437 20 : return r;
1438 : }
1439 :
1440 :
1441 20 : static int radius_server_open_socket(int port)
1442 : {
1443 : int s;
1444 : struct sockaddr_in addr;
1445 :
1446 20 : s = socket(PF_INET, SOCK_DGRAM, 0);
1447 20 : if (s < 0) {
1448 0 : wpa_printf(MSG_INFO, "RADIUS: socket: %s", strerror(errno));
1449 0 : return -1;
1450 : }
1451 :
1452 20 : radius_server_disable_pmtu_discovery(s);
1453 :
1454 20 : os_memset(&addr, 0, sizeof(addr));
1455 20 : addr.sin_family = AF_INET;
1456 20 : addr.sin_port = htons(port);
1457 20 : if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1458 0 : wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno));
1459 0 : close(s);
1460 0 : return -1;
1461 : }
1462 :
1463 20 : return s;
1464 : }
1465 :
1466 :
1467 : #ifdef CONFIG_IPV6
1468 2 : static int radius_server_open_socket6(int port)
1469 : {
1470 : int s;
1471 : struct sockaddr_in6 addr;
1472 :
1473 2 : s = socket(PF_INET6, SOCK_DGRAM, 0);
1474 2 : if (s < 0) {
1475 0 : wpa_printf(MSG_INFO, "RADIUS: socket[IPv6]: %s",
1476 0 : strerror(errno));
1477 0 : return -1;
1478 : }
1479 :
1480 2 : os_memset(&addr, 0, sizeof(addr));
1481 2 : addr.sin6_family = AF_INET6;
1482 2 : os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any));
1483 2 : addr.sin6_port = htons(port);
1484 2 : if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
1485 0 : wpa_printf(MSG_INFO, "RADIUS: bind: %s", strerror(errno));
1486 0 : close(s);
1487 0 : return -1;
1488 : }
1489 :
1490 2 : return s;
1491 : }
1492 : #endif /* CONFIG_IPV6 */
1493 :
1494 :
1495 16 : static void radius_server_free_sessions(struct radius_server_data *data,
1496 : struct radius_session *sessions)
1497 : {
1498 : struct radius_session *session, *prev;
1499 :
1500 16 : session = sessions;
1501 65 : while (session) {
1502 33 : prev = session;
1503 33 : session = session->next;
1504 33 : radius_server_session_free(data, prev);
1505 : }
1506 16 : }
1507 :
1508 :
1509 16 : static void radius_server_free_clients(struct radius_server_data *data,
1510 : struct radius_client *clients)
1511 : {
1512 : struct radius_client *client, *prev;
1513 :
1514 16 : client = clients;
1515 48 : while (client) {
1516 16 : prev = client;
1517 16 : client = client->next;
1518 :
1519 16 : radius_server_free_sessions(data, prev->sessions);
1520 16 : os_free(prev->shared_secret);
1521 16 : os_free(prev);
1522 : }
1523 16 : }
1524 :
1525 :
1526 : static struct radius_client *
1527 16 : radius_server_read_clients(const char *client_file, int ipv6)
1528 : {
1529 : FILE *f;
1530 16 : const int buf_size = 1024;
1531 : char *buf, *pos;
1532 : struct radius_client *clients, *tail, *entry;
1533 16 : int line = 0, mask, failed = 0, i;
1534 : struct in_addr addr;
1535 : #ifdef CONFIG_IPV6
1536 : struct in6_addr addr6;
1537 : #endif /* CONFIG_IPV6 */
1538 : unsigned int val;
1539 :
1540 16 : f = fopen(client_file, "r");
1541 16 : if (f == NULL) {
1542 0 : RADIUS_ERROR("Could not open client file '%s'", client_file);
1543 0 : return NULL;
1544 : }
1545 :
1546 16 : buf = os_malloc(buf_size);
1547 16 : if (buf == NULL) {
1548 0 : fclose(f);
1549 0 : return NULL;
1550 : }
1551 :
1552 16 : clients = tail = NULL;
1553 48 : while (fgets(buf, buf_size, f)) {
1554 : /* Configuration file format:
1555 : * 192.168.1.0/24 secret
1556 : * 192.168.1.2 secret
1557 : * fe80::211:22ff:fe33:4455/64 secretipv6
1558 : */
1559 16 : line++;
1560 16 : buf[buf_size - 1] = '\0';
1561 16 : pos = buf;
1562 282 : while (*pos != '\0' && *pos != '\n')
1563 250 : pos++;
1564 16 : if (*pos == '\n')
1565 16 : *pos = '\0';
1566 16 : if (*buf == '\0' || *buf == '#')
1567 0 : continue;
1568 :
1569 16 : pos = buf;
1570 158 : while ((*pos >= '0' && *pos <= '9') || *pos == '.' ||
1571 34 : (*pos >= 'a' && *pos <= 'f') || *pos == ':' ||
1572 16 : (*pos >= 'A' && *pos <= 'F')) {
1573 108 : pos++;
1574 : }
1575 :
1576 16 : if (*pos == '\0') {
1577 0 : failed = 1;
1578 0 : break;
1579 : }
1580 :
1581 16 : if (*pos == '/') {
1582 : char *end;
1583 15 : *pos++ = '\0';
1584 15 : mask = strtol(pos, &end, 10);
1585 15 : if ((pos == end) ||
1586 15 : (mask < 0 || mask > (ipv6 ? 128 : 32))) {
1587 0 : failed = 1;
1588 0 : break;
1589 : }
1590 15 : pos = end;
1591 : } else {
1592 1 : mask = ipv6 ? 128 : 32;
1593 1 : *pos++ = '\0';
1594 : }
1595 :
1596 16 : if (!ipv6 && inet_aton(buf, &addr) == 0) {
1597 0 : failed = 1;
1598 0 : break;
1599 : }
1600 : #ifdef CONFIG_IPV6
1601 16 : if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) {
1602 0 : if (inet_pton(AF_INET, buf, &addr) <= 0) {
1603 0 : failed = 1;
1604 0 : break;
1605 : }
1606 : /* Convert IPv4 address to IPv6 */
1607 0 : if (mask <= 32)
1608 0 : mask += (128 - 32);
1609 0 : os_memset(addr6.s6_addr, 0, 10);
1610 0 : addr6.s6_addr[10] = 0xff;
1611 0 : addr6.s6_addr[11] = 0xff;
1612 0 : os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr,
1613 : 4);
1614 : }
1615 : #endif /* CONFIG_IPV6 */
1616 :
1617 47 : while (*pos == ' ' || *pos == '\t') {
1618 15 : pos++;
1619 : }
1620 :
1621 16 : if (*pos == '\0') {
1622 0 : failed = 1;
1623 0 : break;
1624 : }
1625 :
1626 16 : entry = os_zalloc(sizeof(*entry));
1627 16 : if (entry == NULL) {
1628 0 : failed = 1;
1629 0 : break;
1630 : }
1631 16 : entry->shared_secret = os_strdup(pos);
1632 16 : if (entry->shared_secret == NULL) {
1633 0 : failed = 1;
1634 0 : os_free(entry);
1635 0 : break;
1636 : }
1637 16 : entry->shared_secret_len = os_strlen(entry->shared_secret);
1638 16 : if (!ipv6) {
1639 15 : entry->addr.s_addr = addr.s_addr;
1640 15 : val = 0;
1641 15 : for (i = 0; i < mask; i++)
1642 0 : val |= 1 << (31 - i);
1643 15 : entry->mask.s_addr = htonl(val);
1644 : }
1645 : #ifdef CONFIG_IPV6
1646 16 : if (ipv6) {
1647 1 : int offset = mask / 8;
1648 :
1649 1 : os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16);
1650 1 : os_memset(entry->mask6.s6_addr, 0xff, offset);
1651 1 : val = 0;
1652 1 : for (i = 0; i < (mask % 8); i++)
1653 0 : val |= 1 << (7 - i);
1654 1 : if (offset < 16)
1655 0 : entry->mask6.s6_addr[offset] = val;
1656 : }
1657 : #endif /* CONFIG_IPV6 */
1658 :
1659 16 : if (tail == NULL) {
1660 16 : clients = tail = entry;
1661 : } else {
1662 0 : tail->next = entry;
1663 0 : tail = entry;
1664 : }
1665 : }
1666 :
1667 16 : if (failed) {
1668 0 : RADIUS_ERROR("Invalid line %d in '%s'", line, client_file);
1669 0 : radius_server_free_clients(NULL, clients);
1670 0 : clients = NULL;
1671 : }
1672 :
1673 16 : os_free(buf);
1674 16 : fclose(f);
1675 :
1676 16 : return clients;
1677 : }
1678 :
1679 :
1680 : /**
1681 : * radius_server_init - Initialize RADIUS server
1682 : * @conf: Configuration for the RADIUS server
1683 : * Returns: Pointer to private RADIUS server context or %NULL on failure
1684 : *
1685 : * This initializes a RADIUS server instance and returns a context pointer that
1686 : * will be used in other calls to the RADIUS server module. The server can be
1687 : * deinitialize by calling radius_server_deinit().
1688 : */
1689 : struct radius_server_data *
1690 16 : radius_server_init(struct radius_server_conf *conf)
1691 : {
1692 : struct radius_server_data *data;
1693 :
1694 : #ifndef CONFIG_IPV6
1695 : if (conf->ipv6) {
1696 : wpa_printf(MSG_ERROR, "RADIUS server compiled without IPv6 support");
1697 : return NULL;
1698 : }
1699 : #endif /* CONFIG_IPV6 */
1700 :
1701 16 : data = os_zalloc(sizeof(*data));
1702 16 : if (data == NULL)
1703 0 : return NULL;
1704 :
1705 16 : dl_list_init(&data->erp_keys);
1706 16 : os_get_reltime(&data->start_time);
1707 16 : data->conf_ctx = conf->conf_ctx;
1708 16 : data->eap_sim_db_priv = conf->eap_sim_db_priv;
1709 16 : data->ssl_ctx = conf->ssl_ctx;
1710 16 : data->msg_ctx = conf->msg_ctx;
1711 16 : data->ipv6 = conf->ipv6;
1712 16 : if (conf->pac_opaque_encr_key) {
1713 12 : data->pac_opaque_encr_key = os_malloc(16);
1714 12 : os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key,
1715 : 16);
1716 : }
1717 16 : if (conf->eap_fast_a_id) {
1718 12 : data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len);
1719 12 : if (data->eap_fast_a_id) {
1720 12 : os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id,
1721 : conf->eap_fast_a_id_len);
1722 12 : data->eap_fast_a_id_len = conf->eap_fast_a_id_len;
1723 : }
1724 : }
1725 16 : if (conf->eap_fast_a_id_info)
1726 12 : data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info);
1727 16 : data->eap_fast_prov = conf->eap_fast_prov;
1728 16 : data->pac_key_lifetime = conf->pac_key_lifetime;
1729 16 : data->pac_key_refresh_time = conf->pac_key_refresh_time;
1730 16 : data->get_eap_user = conf->get_eap_user;
1731 16 : data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1732 16 : data->tnc = conf->tnc;
1733 16 : data->wps = conf->wps;
1734 16 : data->pwd_group = conf->pwd_group;
1735 16 : data->server_id = conf->server_id;
1736 16 : if (conf->eap_req_id_text) {
1737 0 : data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len);
1738 0 : if (data->eap_req_id_text) {
1739 0 : os_memcpy(data->eap_req_id_text, conf->eap_req_id_text,
1740 : conf->eap_req_id_text_len);
1741 0 : data->eap_req_id_text_len = conf->eap_req_id_text_len;
1742 : }
1743 : }
1744 16 : data->erp = conf->erp;
1745 16 : data->erp_domain = conf->erp_domain;
1746 :
1747 16 : if (conf->subscr_remediation_url) {
1748 1 : data->subscr_remediation_url =
1749 1 : os_strdup(conf->subscr_remediation_url);
1750 : }
1751 16 : data->subscr_remediation_method = conf->subscr_remediation_method;
1752 :
1753 : #ifdef CONFIG_SQLITE
1754 16 : if (conf->sqlite_file) {
1755 1 : if (sqlite3_open(conf->sqlite_file, &data->db)) {
1756 0 : RADIUS_ERROR("Could not open SQLite file '%s'",
1757 : conf->sqlite_file);
1758 0 : radius_server_deinit(data);
1759 0 : return NULL;
1760 : }
1761 : }
1762 : #endif /* CONFIG_SQLITE */
1763 :
1764 : #ifdef CONFIG_RADIUS_TEST
1765 : if (conf->dump_msk_file)
1766 : data->dump_msk_file = os_strdup(conf->dump_msk_file);
1767 : #endif /* CONFIG_RADIUS_TEST */
1768 :
1769 16 : data->clients = radius_server_read_clients(conf->client_file,
1770 : conf->ipv6);
1771 16 : if (data->clients == NULL) {
1772 0 : wpa_printf(MSG_ERROR, "No RADIUS clients configured");
1773 0 : radius_server_deinit(data);
1774 0 : return NULL;
1775 : }
1776 :
1777 : #ifdef CONFIG_IPV6
1778 16 : if (conf->ipv6)
1779 1 : data->auth_sock = radius_server_open_socket6(conf->auth_port);
1780 : else
1781 : #endif /* CONFIG_IPV6 */
1782 15 : data->auth_sock = radius_server_open_socket(conf->auth_port);
1783 16 : if (data->auth_sock < 0) {
1784 0 : wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS authentication server");
1785 0 : radius_server_deinit(data);
1786 0 : return NULL;
1787 : }
1788 16 : if (eloop_register_read_sock(data->auth_sock,
1789 : radius_server_receive_auth,
1790 : data, NULL)) {
1791 0 : radius_server_deinit(data);
1792 0 : return NULL;
1793 : }
1794 :
1795 16 : if (conf->acct_port) {
1796 : #ifdef CONFIG_IPV6
1797 6 : if (conf->ipv6)
1798 1 : data->acct_sock = radius_server_open_socket6(
1799 : conf->acct_port);
1800 : else
1801 : #endif /* CONFIG_IPV6 */
1802 5 : data->acct_sock = radius_server_open_socket(conf->acct_port);
1803 6 : if (data->acct_sock < 0) {
1804 0 : wpa_printf(MSG_ERROR, "Failed to open UDP socket for RADIUS accounting server");
1805 0 : radius_server_deinit(data);
1806 0 : return NULL;
1807 : }
1808 6 : if (eloop_register_read_sock(data->acct_sock,
1809 : radius_server_receive_acct,
1810 : data, NULL)) {
1811 0 : radius_server_deinit(data);
1812 0 : return NULL;
1813 : }
1814 : } else {
1815 10 : data->acct_sock = -1;
1816 : }
1817 :
1818 16 : return data;
1819 : }
1820 :
1821 :
1822 : /**
1823 : * radius_server_erp_flush - Flush all ERP keys
1824 : * @data: RADIUS server context from radius_server_init()
1825 : */
1826 17 : void radius_server_erp_flush(struct radius_server_data *data)
1827 : {
1828 : struct eap_server_erp_key *erp;
1829 :
1830 17 : if (data == NULL)
1831 18 : return;
1832 45 : while ((erp = dl_list_first(&data->erp_keys, struct eap_server_erp_key,
1833 : list)) != NULL) {
1834 13 : dl_list_del(&erp->list);
1835 13 : bin_clear_free(erp, sizeof(*erp));
1836 : }
1837 : }
1838 :
1839 :
1840 : /**
1841 : * radius_server_deinit - Deinitialize RADIUS server
1842 : * @data: RADIUS server context from radius_server_init()
1843 : */
1844 987 : void radius_server_deinit(struct radius_server_data *data)
1845 : {
1846 987 : if (data == NULL)
1847 1958 : return;
1848 :
1849 16 : if (data->auth_sock >= 0) {
1850 16 : eloop_unregister_read_sock(data->auth_sock);
1851 16 : close(data->auth_sock);
1852 : }
1853 :
1854 16 : if (data->acct_sock >= 0) {
1855 6 : eloop_unregister_read_sock(data->acct_sock);
1856 6 : close(data->acct_sock);
1857 : }
1858 :
1859 16 : radius_server_free_clients(data, data->clients);
1860 :
1861 16 : os_free(data->pac_opaque_encr_key);
1862 16 : os_free(data->eap_fast_a_id);
1863 16 : os_free(data->eap_fast_a_id_info);
1864 16 : os_free(data->eap_req_id_text);
1865 : #ifdef CONFIG_RADIUS_TEST
1866 : os_free(data->dump_msk_file);
1867 : #endif /* CONFIG_RADIUS_TEST */
1868 16 : os_free(data->subscr_remediation_url);
1869 :
1870 : #ifdef CONFIG_SQLITE
1871 16 : if (data->db)
1872 1 : sqlite3_close(data->db);
1873 : #endif /* CONFIG_SQLITE */
1874 :
1875 16 : radius_server_erp_flush(data);
1876 :
1877 16 : os_free(data);
1878 : }
1879 :
1880 :
1881 : /**
1882 : * radius_server_get_mib - Get RADIUS server MIB information
1883 : * @data: RADIUS server context from radius_server_init()
1884 : * @buf: Buffer for returning the MIB data in text format
1885 : * @buflen: buf length in octets
1886 : * Returns: Number of octets written into buf
1887 : */
1888 8 : int radius_server_get_mib(struct radius_server_data *data, char *buf,
1889 : size_t buflen)
1890 : {
1891 : int ret, uptime;
1892 : unsigned int idx;
1893 : char *end, *pos;
1894 : struct os_reltime now;
1895 : struct radius_client *cli;
1896 :
1897 : /* RFC 2619 - RADIUS Authentication Server MIB */
1898 :
1899 8 : if (data == NULL || buflen == 0)
1900 0 : return 0;
1901 :
1902 8 : pos = buf;
1903 8 : end = buf + buflen;
1904 :
1905 8 : os_get_reltime(&now);
1906 16 : uptime = (now.sec - data->start_time.sec) * 100 +
1907 8 : ((now.usec - data->start_time.usec) / 10000) % 100;
1908 8 : ret = os_snprintf(pos, end - pos,
1909 : "RADIUS-AUTH-SERVER-MIB\n"
1910 : "radiusAuthServIdent=hostapd\n"
1911 : "radiusAuthServUpTime=%d\n"
1912 : "radiusAuthServResetTime=0\n"
1913 : "radiusAuthServConfigReset=4\n",
1914 : uptime);
1915 8 : if (os_snprintf_error(end - pos, ret)) {
1916 0 : *pos = '\0';
1917 0 : return pos - buf;
1918 : }
1919 8 : pos += ret;
1920 :
1921 8 : ret = os_snprintf(pos, end - pos,
1922 : "radiusAuthServTotalAccessRequests=%u\n"
1923 : "radiusAuthServTotalInvalidRequests=%u\n"
1924 : "radiusAuthServTotalDupAccessRequests=%u\n"
1925 : "radiusAuthServTotalAccessAccepts=%u\n"
1926 : "radiusAuthServTotalAccessRejects=%u\n"
1927 : "radiusAuthServTotalAccessChallenges=%u\n"
1928 : "radiusAuthServTotalMalformedAccessRequests=%u\n"
1929 : "radiusAuthServTotalBadAuthenticators=%u\n"
1930 : "radiusAuthServTotalPacketsDropped=%u\n"
1931 : "radiusAuthServTotalUnknownTypes=%u\n"
1932 : "radiusAccServTotalRequests=%u\n"
1933 : "radiusAccServTotalInvalidRequests=%u\n"
1934 : "radiusAccServTotalResponses=%u\n"
1935 : "radiusAccServTotalMalformedRequests=%u\n"
1936 : "radiusAccServTotalBadAuthenticators=%u\n"
1937 : "radiusAccServTotalUnknownTypes=%u\n",
1938 : data->counters.access_requests,
1939 : data->counters.invalid_requests,
1940 : data->counters.dup_access_requests,
1941 : data->counters.access_accepts,
1942 : data->counters.access_rejects,
1943 : data->counters.access_challenges,
1944 : data->counters.malformed_access_requests,
1945 : data->counters.bad_authenticators,
1946 : data->counters.packets_dropped,
1947 : data->counters.unknown_types,
1948 : data->counters.acct_requests,
1949 : data->counters.invalid_acct_requests,
1950 : data->counters.acct_responses,
1951 : data->counters.malformed_acct_requests,
1952 : data->counters.acct_bad_authenticators,
1953 : data->counters.unknown_acct_types);
1954 8 : if (os_snprintf_error(end - pos, ret)) {
1955 0 : *pos = '\0';
1956 0 : return pos - buf;
1957 : }
1958 8 : pos += ret;
1959 :
1960 16 : for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) {
1961 : char abuf[50], mbuf[50];
1962 : #ifdef CONFIG_IPV6
1963 8 : if (data->ipv6) {
1964 0 : if (inet_ntop(AF_INET6, &cli->addr6, abuf,
1965 : sizeof(abuf)) == NULL)
1966 0 : abuf[0] = '\0';
1967 0 : if (inet_ntop(AF_INET6, &cli->mask6, mbuf,
1968 : sizeof(mbuf)) == NULL)
1969 0 : mbuf[0] = '\0';
1970 : }
1971 : #endif /* CONFIG_IPV6 */
1972 8 : if (!data->ipv6) {
1973 8 : os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf));
1974 8 : os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf));
1975 : }
1976 :
1977 8 : ret = os_snprintf(pos, end - pos,
1978 : "radiusAuthClientIndex=%u\n"
1979 : "radiusAuthClientAddress=%s/%s\n"
1980 : "radiusAuthServAccessRequests=%u\n"
1981 : "radiusAuthServDupAccessRequests=%u\n"
1982 : "radiusAuthServAccessAccepts=%u\n"
1983 : "radiusAuthServAccessRejects=%u\n"
1984 : "radiusAuthServAccessChallenges=%u\n"
1985 : "radiusAuthServMalformedAccessRequests=%u\n"
1986 : "radiusAuthServBadAuthenticators=%u\n"
1987 : "radiusAuthServPacketsDropped=%u\n"
1988 : "radiusAuthServUnknownTypes=%u\n"
1989 : "radiusAccServTotalRequests=%u\n"
1990 : "radiusAccServTotalInvalidRequests=%u\n"
1991 : "radiusAccServTotalResponses=%u\n"
1992 : "radiusAccServTotalMalformedRequests=%u\n"
1993 : "radiusAccServTotalBadAuthenticators=%u\n"
1994 : "radiusAccServTotalUnknownTypes=%u\n",
1995 : idx,
1996 : abuf, mbuf,
1997 : cli->counters.access_requests,
1998 : cli->counters.dup_access_requests,
1999 : cli->counters.access_accepts,
2000 : cli->counters.access_rejects,
2001 : cli->counters.access_challenges,
2002 : cli->counters.malformed_access_requests,
2003 : cli->counters.bad_authenticators,
2004 : cli->counters.packets_dropped,
2005 : cli->counters.unknown_types,
2006 : cli->counters.acct_requests,
2007 : cli->counters.invalid_acct_requests,
2008 : cli->counters.acct_responses,
2009 : cli->counters.malformed_acct_requests,
2010 : cli->counters.acct_bad_authenticators,
2011 : cli->counters.unknown_acct_types);
2012 8 : if (os_snprintf_error(end - pos, ret)) {
2013 0 : *pos = '\0';
2014 0 : return pos - buf;
2015 : }
2016 8 : pos += ret;
2017 : }
2018 :
2019 8 : return pos - buf;
2020 : }
2021 :
2022 :
2023 923 : static int radius_server_get_eap_user(void *ctx, const u8 *identity,
2024 : size_t identity_len, int phase2,
2025 : struct eap_user *user)
2026 : {
2027 923 : struct radius_session *sess = ctx;
2028 923 : struct radius_server_data *data = sess->server;
2029 : int ret;
2030 :
2031 923 : ret = data->get_eap_user(data->conf_ctx, identity, identity_len,
2032 : phase2, user);
2033 923 : if (ret == 0 && user) {
2034 920 : sess->accept_attr = user->accept_attr;
2035 920 : sess->remediation = user->remediation;
2036 920 : sess->macacl = user->macacl;
2037 : }
2038 923 : return ret;
2039 : }
2040 :
2041 :
2042 41 : static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len)
2043 : {
2044 41 : struct radius_session *sess = ctx;
2045 41 : struct radius_server_data *data = sess->server;
2046 41 : *len = data->eap_req_id_text_len;
2047 41 : return data->eap_req_id_text;
2048 : }
2049 :
2050 :
2051 1613 : static void radius_server_log_msg(void *ctx, const char *msg)
2052 : {
2053 1613 : struct radius_session *sess = ctx;
2054 1613 : srv_log(sess, "EAP: %s", msg);
2055 1613 : }
2056 :
2057 :
2058 : #ifdef CONFIG_ERP
2059 :
2060 13 : static const char * radius_server_get_erp_domain(void *ctx)
2061 : {
2062 13 : struct radius_session *sess = ctx;
2063 13 : struct radius_server_data *data = sess->server;
2064 :
2065 13 : return data->erp_domain;
2066 : }
2067 :
2068 :
2069 : static struct eap_server_erp_key *
2070 15 : radius_server_erp_get_key(void *ctx, const char *keyname)
2071 : {
2072 15 : struct radius_session *sess = ctx;
2073 15 : struct radius_server_data *data = sess->server;
2074 : struct eap_server_erp_key *erp;
2075 :
2076 15 : dl_list_for_each(erp, &data->erp_keys, struct eap_server_erp_key,
2077 : list) {
2078 15 : if (os_strcmp(erp->keyname_nai, keyname) == 0)
2079 15 : return erp;
2080 : }
2081 :
2082 0 : return NULL;
2083 : }
2084 :
2085 :
2086 13 : static int radius_server_erp_add_key(void *ctx, struct eap_server_erp_key *erp)
2087 : {
2088 13 : struct radius_session *sess = ctx;
2089 13 : struct radius_server_data *data = sess->server;
2090 :
2091 13 : dl_list_add(&data->erp_keys, &erp->list);
2092 13 : return 0;
2093 : }
2094 :
2095 : #endif /* CONFIG_ERP */
2096 :
2097 :
2098 : static struct eapol_callbacks radius_server_eapol_cb =
2099 : {
2100 : .get_eap_user = radius_server_get_eap_user,
2101 : .get_eap_req_id_text = radius_server_get_eap_req_id_text,
2102 : .log_msg = radius_server_log_msg,
2103 : #ifdef CONFIG_ERP
2104 : .get_erp_send_reauth_start = NULL,
2105 : .get_erp_domain = radius_server_get_erp_domain,
2106 : .erp_get_key = radius_server_erp_get_key,
2107 : .erp_add_key = radius_server_erp_add_key,
2108 : #endif /* CONFIG_ERP */
2109 : };
2110 :
2111 :
2112 : /**
2113 : * radius_server_eap_pending_cb - Pending EAP data notification
2114 : * @data: RADIUS server context from radius_server_init()
2115 : * @ctx: Pending EAP context pointer
2116 : *
2117 : * This function is used to notify EAP server module that a pending operation
2118 : * has been completed and processing of the EAP session can proceed.
2119 : */
2120 78 : void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx)
2121 : {
2122 : struct radius_client *cli;
2123 78 : struct radius_session *s, *sess = NULL;
2124 : struct radius_msg *msg;
2125 :
2126 78 : if (data == NULL)
2127 0 : return;
2128 :
2129 78 : for (cli = data->clients; cli; cli = cli->next) {
2130 78 : for (s = cli->sessions; s; s = s->next) {
2131 78 : if (s->eap == ctx && s->last_msg) {
2132 78 : sess = s;
2133 78 : break;
2134 : }
2135 : }
2136 78 : if (sess)
2137 78 : break;
2138 : }
2139 :
2140 78 : if (sess == NULL) {
2141 0 : RADIUS_DEBUG("No session matched callback ctx");
2142 0 : return;
2143 : }
2144 :
2145 78 : msg = sess->last_msg;
2146 78 : sess->last_msg = NULL;
2147 78 : eap_sm_pending_cb(sess->eap);
2148 234 : if (radius_server_request(data, msg,
2149 78 : (struct sockaddr *) &sess->last_from,
2150 : sess->last_fromlen, cli,
2151 78 : sess->last_from_addr,
2152 : sess->last_from_port, sess) == -2)
2153 0 : return; /* msg was stored with the session */
2154 :
2155 78 : radius_msg_free(msg);
2156 : }
|
