2 * hostapd / RADIUS authentication server
3 * Copyright (c) 2005-2008, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
23 #include "radius_server.h"
25 #define RADIUS_SESSION_TIMEOUT 60
26 #define RADIUS_MAX_SESSION 100
27 #define RADIUS_MAX_MSG_LEN 3000
29 static struct eapol_callbacks radius_server_eapol_cb;
32 struct radius_server_data;
34 struct radius_server_counters {
37 u32 dup_access_requests;
40 u32 access_challenges;
41 u32 malformed_access_requests;
42 u32 bad_authenticators;
47 struct radius_session {
48 struct radius_session *next;
49 struct radius_client *client;
50 struct radius_server_data *server;
53 u8 *eapKeyData, *eapReqData;
54 size_t eapKeyDataLen, eapReqDataLen;
55 Boolean eapSuccess, eapRestart, eapFail, eapResp, eapReq, eapNoReq;
56 Boolean portEnabled, eapTimeout;
58 struct radius_msg *last_msg;
61 struct sockaddr_storage last_from;
62 socklen_t last_fromlen;
64 struct radius_msg *last_reply;
65 u8 last_authenticator[16];
68 struct radius_client {
69 struct radius_client *next;
73 struct in6_addr addr6;
74 struct in6_addr mask6;
75 #endif /* CONFIG_IPV6 */
77 int shared_secret_len;
78 struct radius_session *sessions;
79 struct radius_server_counters counters;
82 struct radius_server_data {
84 struct radius_client *clients;
85 unsigned int next_sess_id;
88 void *eap_sim_db_priv;
91 struct os_time start_time;
92 struct radius_server_counters counters;
96 extern int wpa_debug_level;
98 #define RADIUS_DEBUG(args...) \
99 wpa_printf(MSG_DEBUG, "RADIUS SRV: " args)
100 #define RADIUS_ERROR(args...) \
101 wpa_printf(MSG_ERROR, "RADIUS SRV: " args)
102 #define RADIUS_DUMP(args...) \
103 wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args)
104 #define RADIUS_DUMP_ASCII(args...) \
105 wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args)
108 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx);
112 static struct radius_client *
113 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr,
116 struct radius_client *client = data->clients;
121 struct in6_addr *addr6;
124 addr6 = (struct in6_addr *) addr;
125 for (i = 0; i < 16; i++) {
126 if ((addr6->s6_addr[i] &
127 client->mask6.s6_addr[i]) !=
128 (client->addr6.s6_addr[i] &
129 client->mask6.s6_addr[i])) {
138 #endif /* CONFIG_IPV6 */
139 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) ==
140 (addr->s_addr & client->mask.s_addr)) {
144 client = client->next;
151 static struct radius_session *
152 radius_server_get_session(struct radius_client *client, unsigned int sess_id)
154 struct radius_session *sess = client->sessions;
157 if (sess->sess_id == sess_id) {
167 static void radius_server_session_free(struct radius_server_data *data,
168 struct radius_session *sess)
170 eloop_cancel_timeout(radius_server_session_timeout, data, sess);
171 free(sess->eapKeyData);
172 free(sess->eapReqData);
173 eap_sm_deinit(sess->eap);
174 if (sess->last_msg) {
175 radius_msg_free(sess->last_msg);
176 free(sess->last_msg);
178 free(sess->last_from_addr);
179 if (sess->last_reply) {
180 radius_msg_free(sess->last_reply);
181 free(sess->last_reply);
188 static void radius_server_session_remove_timeout(void *eloop_ctx,
191 static void radius_server_session_remove(struct radius_server_data *data,
192 struct radius_session *sess)
194 struct radius_client *client = sess->client;
195 struct radius_session *session, *prev;
197 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
200 session = client->sessions;
202 if (session == sess) {
204 client->sessions = sess->next;
206 prev->next = sess->next;
208 radius_server_session_free(data, sess);
212 session = session->next;
217 static void radius_server_session_remove_timeout(void *eloop_ctx,
220 struct radius_server_data *data = eloop_ctx;
221 struct radius_session *sess = timeout_ctx;
222 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id);
223 radius_server_session_remove(data, sess);
227 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx)
229 struct radius_server_data *data = eloop_ctx;
230 struct radius_session *sess = timeout_ctx;
232 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id);
233 radius_server_session_remove(data, sess);
237 static struct radius_session *
238 radius_server_new_session(struct radius_server_data *data,
239 struct radius_client *client)
241 struct radius_session *sess;
243 if (data->num_sess >= RADIUS_MAX_SESSION) {
244 RADIUS_DEBUG("Maximum number of existing session - no room "
245 "for a new session");
249 sess = wpa_zalloc(sizeof(*sess));
254 sess->client = client;
255 sess->sess_id = data->next_sess_id++;
256 sess->next = client->sessions;
257 client->sessions = sess;
258 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0,
259 radius_server_session_timeout, data, sess);
265 static struct radius_session *
266 radius_server_get_new_session(struct radius_server_data *data,
267 struct radius_client *client,
268 struct radius_msg *msg)
272 const struct hostapd_eap_user *eap_user;
274 struct radius_session *sess;
275 struct eap_config eap_conf;
277 RADIUS_DEBUG("Creating a new session");
283 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256);
284 if (res < 0 || res > 256) {
285 RADIUS_DEBUG("Could not get User-Name");
290 RADIUS_DUMP_ASCII("User-Name", user, user_len);
292 eap_user = hostapd_get_eap_user(data->hostapd_conf, user, user_len, 0);
296 RADIUS_DEBUG("Matching user entry found");
297 sess = radius_server_new_session(data, client);
299 RADIUS_DEBUG("Failed to create a new session");
303 RADIUS_DEBUG("User-Name not found from user database");
307 memset(&eap_conf, 0, sizeof(eap_conf));
308 eap_conf.ssl_ctx = data->ssl_ctx;
309 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv;
310 eap_conf.backend_auth = TRUE;
311 sess->eap = eap_sm_init(sess, &radius_server_eapol_cb, &eap_conf);
312 if (sess->eap == NULL) {
313 RADIUS_DEBUG("Failed to initialize EAP state machine for the "
315 radius_server_session_free(data, sess);
318 sess->eapRestart = TRUE;
319 sess->portEnabled = TRUE;
321 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id);
327 static struct radius_msg *
328 radius_server_encapsulate_eap(struct radius_server_data *data,
329 struct radius_client *client,
330 struct radius_session *sess,
331 struct radius_msg *request)
333 struct radius_msg *msg;
335 unsigned int sess_id;
338 code = RADIUS_CODE_ACCESS_REJECT;
339 } else if (sess->eapSuccess) {
340 code = RADIUS_CODE_ACCESS_ACCEPT;
342 code = RADIUS_CODE_ACCESS_CHALLENGE;
345 msg = radius_msg_new(code, request->hdr->identifier);
347 RADIUS_DEBUG("Failed to allocate reply message");
351 sess_id = htonl(sess->sess_id);
352 if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
353 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
354 (u8 *) &sess_id, sizeof(sess_id))) {
355 RADIUS_DEBUG("Failed to add State attribute");
358 if (sess->eapReqData &&
359 !radius_msg_add_eap(msg, sess->eapReqData, sess->eapReqDataLen)) {
360 RADIUS_DEBUG("Failed to add EAP-Message attribute");
363 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eapKeyData) {
365 if (sess->eapKeyDataLen > 64) {
368 len = sess->eapKeyDataLen / 2;
370 if (!radius_msg_add_mppe_keys(msg, request->hdr->authenticator,
371 (u8 *) client->shared_secret,
372 client->shared_secret_len,
373 sess->eapKeyData + len, len,
374 sess->eapKeyData, len)) {
375 RADIUS_DEBUG("Failed to add MPPE key attributes");
379 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
380 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
381 radius_msg_free(msg);
386 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
387 client->shared_secret_len,
388 request->hdr->authenticator) < 0) {
389 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
396 static int radius_server_reject(struct radius_server_data *data,
397 struct radius_client *client,
398 struct radius_msg *request,
399 struct sockaddr *from, socklen_t fromlen,
400 const char *from_addr, int from_port)
402 struct radius_msg *msg;
404 struct eap_hdr eapfail;
406 RADIUS_DEBUG("Reject invalid request from %s:%d",
407 from_addr, from_port);
409 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT,
410 request->hdr->identifier);
415 memset(&eapfail, 0, sizeof(eapfail));
416 eapfail.code = EAP_CODE_FAILURE;
417 eapfail.identifier = 0;
418 eapfail.length = htons(sizeof(eapfail));
420 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
421 RADIUS_DEBUG("Failed to add EAP-Message attribute");
424 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
425 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
426 radius_msg_free(msg);
431 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
432 client->shared_secret_len,
433 request->hdr->authenticator) < 0) {
434 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
437 if (wpa_debug_level <= MSG_MSGDUMP) {
438 radius_msg_dump(msg);
441 data->counters.access_rejects++;
442 client->counters.access_rejects++;
443 if (sendto(data->auth_sock, msg->buf, msg->buf_used, 0,
444 (struct sockaddr *) from, sizeof(*from)) < 0) {
445 perror("sendto[RADIUS SRV]");
449 radius_msg_free(msg);
456 static int radius_server_request(struct radius_server_data *data,
457 struct radius_msg *msg,
458 struct sockaddr *from, socklen_t fromlen,
459 struct radius_client *client,
460 const char *from_addr, int from_port,
461 struct radius_session *force_sess)
465 int res, state_included = 0;
466 u8 statebuf[4], resp_id;
468 struct radius_session *sess;
469 struct radius_msg *reply;
475 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf,
477 state_included = res >= 0;
478 if (res == sizeof(statebuf)) {
479 state = (statebuf[0] << 24) | (statebuf[1] << 16) |
480 (statebuf[2] << 8) | statebuf[3];
481 sess = radius_server_get_session(client, state);
488 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id);
489 } else if (state_included) {
490 RADIUS_DEBUG("State attribute included but no session found");
491 radius_server_reject(data, client, msg, from, fromlen,
492 from_addr, from_port);
495 sess = radius_server_get_new_session(data, client, msg);
497 RADIUS_DEBUG("Could not create a new session");
498 radius_server_reject(data, client, msg, from, fromlen,
499 from_addr, from_port);
504 if (sess->last_from_port == from_port &&
505 sess->last_identifier == msg->hdr->identifier &&
506 os_memcmp(sess->last_authenticator, msg->hdr->authenticator, 16) ==
508 RADIUS_DEBUG("Duplicate message from %s", from_addr);
509 data->counters.dup_access_requests++;
510 client->counters.dup_access_requests++;
512 if (sess->last_reply) {
513 res = sendto(data->auth_sock, sess->last_reply->buf,
514 sess->last_reply->buf_used, 0,
515 (struct sockaddr *) from, fromlen);
517 perror("sendto[RADIUS SRV]");
522 RADIUS_DEBUG("No previous reply available for duplicate "
527 eap = radius_msg_get_eap(msg, &eap_len);
529 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s",
531 data->counters.packets_dropped++;
532 client->counters.packets_dropped++;
536 RADIUS_DUMP("Received EAP data", eap, eap_len);
537 if (eap_len >= sizeof(*hdr)) {
538 hdr = (struct eap_hdr *) eap;
539 resp_id = hdr->identifier;
544 /* FIX: if Code is Request, Success, or Failure, send Access-Reject;
545 * RFC3579 Sect. 2.6.2.
546 * Include EAP-Response/Nak with no preferred method if
548 * If code is not 1-4, discard the packet silently.
549 * Or is this already done by the EAP state machine? */
551 eap_set_eapRespData(sess->eap, eap, eap_len);
554 sess->eapResp = TRUE;
555 eap_sm_step(sess->eap);
557 if (sess->eapReqData) {
558 RADIUS_DUMP("EAP data from the state machine",
559 sess->eapReqData, sess->eapReqDataLen);
560 } else if (sess->eapFail) {
561 RADIUS_DEBUG("No EAP data from the state machine, but eapFail "
562 "set - generate EAP-Failure");
563 hdr = wpa_zalloc(sizeof(*hdr));
565 hdr->identifier = resp_id;
566 hdr->length = htons(sizeof(*hdr));
567 sess->eapReqData = (u8 *) hdr;
568 sess->eapReqDataLen = sizeof(*hdr);
570 } else if (eap_sm_method_pending(sess->eap)) {
571 if (sess->last_msg) {
572 radius_msg_free(sess->last_msg);
573 free(sess->last_msg);
575 sess->last_msg = msg;
576 sess->last_from_port = from_port;
577 free(sess->last_from_addr);
578 sess->last_from_addr = strdup(from_addr);
579 sess->last_fromlen = fromlen;
580 memcpy(&sess->last_from, from, fromlen);
583 RADIUS_DEBUG("No EAP data from the state machine - ignore this"
584 " Access-Request silently (assuming it was a "
586 data->counters.packets_dropped++;
587 client->counters.packets_dropped++;
591 reply = radius_server_encapsulate_eap(data, client, sess, msg);
593 free(sess->eapReqData);
594 sess->eapReqData = NULL;
595 sess->eapReqDataLen = 0;
598 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port);
599 if (wpa_debug_level <= MSG_MSGDUMP) {
600 radius_msg_dump(reply);
603 switch (reply->hdr->code) {
604 case RADIUS_CODE_ACCESS_ACCEPT:
605 data->counters.access_accepts++;
606 client->counters.access_accepts++;
608 case RADIUS_CODE_ACCESS_REJECT:
609 data->counters.access_rejects++;
610 client->counters.access_rejects++;
612 case RADIUS_CODE_ACCESS_CHALLENGE:
613 data->counters.access_challenges++;
614 client->counters.access_challenges++;
617 res = sendto(data->auth_sock, reply->buf, reply->buf_used, 0,
618 (struct sockaddr *) from, fromlen);
620 perror("sendto[RADIUS SRV]");
622 if (sess->last_reply) {
623 radius_msg_free(sess->last_reply);
624 free(sess->last_reply);
626 sess->last_reply = reply;
627 sess->last_from_port = from_port;
628 sess->last_identifier = msg->hdr->identifier;
629 os_memcpy(sess->last_authenticator, msg->hdr->authenticator,
632 data->counters.packets_dropped++;
633 client->counters.packets_dropped++;
636 if (sess->eapSuccess || sess->eapFail) {
637 RADIUS_DEBUG("Removing completed session 0x%x after timeout",
639 eloop_cancel_timeout(radius_server_session_remove_timeout,
641 eloop_register_timeout(10, 0,
642 radius_server_session_remove_timeout,
650 static void radius_server_receive_auth(int sock, void *eloop_ctx,
653 struct radius_server_data *data = eloop_ctx;
655 struct sockaddr_storage from;
658 struct radius_client *client = NULL;
659 struct radius_msg *msg = NULL;
663 buf = malloc(RADIUS_MAX_MSG_LEN);
668 fromlen = sizeof(from);
669 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
670 (struct sockaddr *) &from, &fromlen);
672 perror("recvfrom[radius_server]");
678 struct sockaddr_in6 *from6 = (struct sockaddr_in6 *) &from;
679 if (inet_ntop(AF_INET6, &from6->sin6_addr, abuf, sizeof(abuf))
682 from_port = ntohs(from6->sin6_port);
683 RADIUS_DEBUG("Received %d bytes from %s:%d",
684 len, abuf, from_port);
686 client = radius_server_get_client(data,
688 &from6->sin6_addr, 1);
690 #endif /* CONFIG_IPV6 */
693 struct sockaddr_in *from4 = (struct sockaddr_in *) &from;
694 snprintf(abuf, sizeof(abuf), "%s", inet_ntoa(from4->sin_addr));
695 from_port = ntohs(from4->sin_port);
696 RADIUS_DEBUG("Received %d bytes from %s:%d",
697 len, abuf, from_port);
699 client = radius_server_get_client(data, &from4->sin_addr, 0);
702 RADIUS_DUMP("Received data", buf, len);
704 if (client == NULL) {
705 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
706 data->counters.invalid_requests++;
710 msg = radius_msg_parse(buf, len);
712 RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
713 data->counters.malformed_access_requests++;
714 client->counters.malformed_access_requests++;
721 if (wpa_debug_level <= MSG_MSGDUMP) {
722 radius_msg_dump(msg);
725 if (msg->hdr->code != RADIUS_CODE_ACCESS_REQUEST) {
726 RADIUS_DEBUG("Unexpected RADIUS code %d", msg->hdr->code);
727 data->counters.unknown_types++;
728 client->counters.unknown_types++;
732 data->counters.access_requests++;
733 client->counters.access_requests++;
735 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret,
736 client->shared_secret_len, NULL)) {
737 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf);
738 data->counters.bad_authenticators++;
739 client->counters.bad_authenticators++;
743 if (radius_server_request(data, msg, (struct sockaddr *) &from,
744 fromlen, client, abuf, from_port, NULL) ==
746 return; /* msg was stored with the session */
750 radius_msg_free(msg);
757 static int radius_server_open_socket(int port)
760 struct sockaddr_in addr;
762 s = socket(PF_INET, SOCK_DGRAM, 0);
768 memset(&addr, 0, sizeof(addr));
769 addr.sin_family = AF_INET;
770 addr.sin_port = htons(port);
771 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
782 static int radius_server_open_socket6(int port)
785 struct sockaddr_in6 addr;
787 s = socket(PF_INET6, SOCK_DGRAM, 0);
789 perror("socket[IPv6]");
793 memset(&addr, 0, sizeof(addr));
794 addr.sin6_family = AF_INET6;
795 memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any));
796 addr.sin6_port = htons(port);
797 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
805 #endif /* CONFIG_IPV6 */
808 static void radius_server_free_sessions(struct radius_server_data *data,
809 struct radius_session *sessions)
811 struct radius_session *session, *prev;
816 session = session->next;
817 radius_server_session_free(data, prev);
822 static void radius_server_free_clients(struct radius_server_data *data,
823 struct radius_client *clients)
825 struct radius_client *client, *prev;
830 client = client->next;
832 radius_server_free_sessions(data, prev->sessions);
833 free(prev->shared_secret);
839 static struct radius_client *
840 radius_server_read_clients(const char *client_file, int ipv6)
843 const int buf_size = 1024;
845 struct radius_client *clients, *tail, *entry;
846 int line = 0, mask, failed = 0, i;
849 struct in6_addr addr6;
850 #endif /* CONFIG_IPV6 */
853 f = fopen(client_file, "r");
855 RADIUS_ERROR("Could not open client file '%s'", client_file);
859 buf = malloc(buf_size);
865 clients = tail = NULL;
866 while (fgets(buf, buf_size, f)) {
867 /* Configuration file format:
868 * 192.168.1.0/24 secret
870 * fe80::211:22ff:fe33:4455/64 secretipv6
873 buf[buf_size - 1] = '\0';
875 while (*pos != '\0' && *pos != '\n')
879 if (*buf == '\0' || *buf == '#')
883 while ((*pos >= '0' && *pos <= '9') || *pos == '.' ||
884 (*pos >= 'a' && *pos <= 'f') || *pos == ':' ||
885 (*pos >= 'A' && *pos <= 'F')) {
897 mask = strtol(pos, &end, 10);
899 (mask < 0 || mask > (ipv6 ? 128 : 32))) {
905 mask = ipv6 ? 128 : 32;
909 if (!ipv6 && inet_aton(buf, &addr) == 0) {
914 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) {
915 if (inet_pton(AF_INET, buf, &addr) <= 0) {
919 /* Convert IPv4 address to IPv6 */
922 memset(addr6.s6_addr, 0, 10);
923 addr6.s6_addr[10] = 0xff;
924 addr6.s6_addr[11] = 0xff;
925 memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr, 4);
927 #endif /* CONFIG_IPV6 */
929 while (*pos == ' ' || *pos == '\t') {
938 entry = wpa_zalloc(sizeof(*entry));
943 entry->shared_secret = strdup(pos);
944 if (entry->shared_secret == NULL) {
949 entry->shared_secret_len = strlen(entry->shared_secret);
950 entry->addr.s_addr = addr.s_addr;
953 for (i = 0; i < mask; i++)
954 val |= 1 << (31 - i);
955 entry->mask.s_addr = htonl(val);
959 int offset = mask / 8;
961 memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16);
962 memset(entry->mask6.s6_addr, 0xff, offset);
964 for (i = 0; i < (mask % 8); i++)
967 entry->mask6.s6_addr[offset] = val;
969 #endif /* CONFIG_IPV6 */
972 clients = tail = entry;
980 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file);
981 radius_server_free_clients(NULL, clients);
992 struct radius_server_data *
993 radius_server_init(struct radius_server_conf *conf)
995 struct radius_server_data *data;
999 fprintf(stderr, "RADIUS server compiled without IPv6 "
1003 #endif /* CONFIG_IPV6 */
1005 data = wpa_zalloc(sizeof(*data));
1009 os_get_time(&data->start_time);
1010 data->hostapd_conf = conf->hostapd_conf;
1011 data->eap_sim_db_priv = conf->eap_sim_db_priv;
1012 data->ssl_ctx = conf->ssl_ctx;
1013 data->ipv6 = conf->ipv6;
1015 data->clients = radius_server_read_clients(conf->client_file,
1017 if (data->clients == NULL) {
1018 printf("No RADIUS clients configured.\n");
1019 radius_server_deinit(data);
1025 data->auth_sock = radius_server_open_socket6(conf->auth_port);
1027 #endif /* CONFIG_IPV6 */
1028 data->auth_sock = radius_server_open_socket(conf->auth_port);
1029 if (data->auth_sock < 0) {
1030 printf("Failed to open UDP socket for RADIUS authentication "
1032 radius_server_deinit(data);
1035 if (eloop_register_read_sock(data->auth_sock,
1036 radius_server_receive_auth,
1038 radius_server_deinit(data);
1046 void radius_server_deinit(struct radius_server_data *data)
1051 if (data->auth_sock >= 0) {
1052 eloop_unregister_read_sock(data->auth_sock);
1053 close(data->auth_sock);
1056 radius_server_free_clients(data, data->clients);
1062 int radius_server_get_mib(struct radius_server_data *data, char *buf,
1069 struct radius_client *cli;
1071 /* RFC 2619 - RADIUS Authentication Server MIB */
1073 if (data == NULL || buflen == 0)
1080 uptime = (now.sec - data->start_time.sec) * 100 +
1081 ((now.usec - data->start_time.usec) / 10000) % 100;
1082 ret = snprintf(pos, end - pos,
1083 "RADIUS-AUTH-SERVER-MIB\n"
1084 "radiusAuthServIdent=hostapd\n"
1085 "radiusAuthServUpTime=%d\n"
1086 "radiusAuthServResetTime=0\n"
1087 "radiusAuthServConfigReset=4\n",
1089 if (ret < 0 || ret >= end - pos) {
1095 ret = snprintf(pos, end - pos,
1096 "radiusAuthServTotalAccessRequests=%u\n"
1097 "radiusAuthServTotalInvalidRequests=%u\n"
1098 "radiusAuthServTotalDupAccessRequests=%u\n"
1099 "radiusAuthServTotalAccessAccepts=%u\n"
1100 "radiusAuthServTotalAccessRejects=%u\n"
1101 "radiusAuthServTotalAccessChallenges=%u\n"
1102 "radiusAuthServTotalMalformedAccessRequests=%u\n"
1103 "radiusAuthServTotalBadAuthenticators=%u\n"
1104 "radiusAuthServTotalPacketsDropped=%u\n"
1105 "radiusAuthServTotalUnknownTypes=%u\n",
1106 data->counters.access_requests,
1107 data->counters.invalid_requests,
1108 data->counters.dup_access_requests,
1109 data->counters.access_accepts,
1110 data->counters.access_rejects,
1111 data->counters.access_challenges,
1112 data->counters.malformed_access_requests,
1113 data->counters.bad_authenticators,
1114 data->counters.packets_dropped,
1115 data->counters.unknown_types);
1116 if (ret < 0 || ret >= end - pos) {
1122 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) {
1123 char abuf[50], mbuf[50];
1126 if (inet_ntop(AF_INET6, &cli->addr6, abuf,
1127 sizeof(abuf)) == NULL)
1129 if (inet_ntop(AF_INET6, &cli->mask6, abuf,
1130 sizeof(mbuf)) == NULL)
1133 #endif /* CONFIG_IPV6 */
1135 snprintf(abuf, sizeof(abuf), "%s",
1136 inet_ntoa(cli->addr));
1137 snprintf(mbuf, sizeof(mbuf), "%s",
1138 inet_ntoa(cli->mask));
1141 ret = snprintf(pos, end - pos,
1142 "radiusAuthClientIndex=%u\n"
1143 "radiusAuthClientAddress=%s/%s\n"
1144 "radiusAuthServAccessRequests=%u\n"
1145 "radiusAuthServDupAccessRequests=%u\n"
1146 "radiusAuthServAccessAccepts=%u\n"
1147 "radiusAuthServAccessRejects=%u\n"
1148 "radiusAuthServAccessChallenges=%u\n"
1149 "radiusAuthServMalformedAccessRequests=%u\n"
1150 "radiusAuthServBadAuthenticators=%u\n"
1151 "radiusAuthServPacketsDropped=%u\n"
1152 "radiusAuthServUnknownTypes=%u\n",
1155 cli->counters.access_requests,
1156 cli->counters.dup_access_requests,
1157 cli->counters.access_accepts,
1158 cli->counters.access_rejects,
1159 cli->counters.access_challenges,
1160 cli->counters.malformed_access_requests,
1161 cli->counters.bad_authenticators,
1162 cli->counters.packets_dropped,
1163 cli->counters.unknown_types);
1164 if (ret < 0 || ret >= end - pos) {
1175 static Boolean radius_server_get_bool(void *ctx, enum eapol_bool_var variable)
1177 struct radius_session *sess = ctx;
1181 case EAPOL_eapSuccess:
1182 return sess->eapSuccess;
1183 case EAPOL_eapRestart:
1184 return sess->eapRestart;
1186 return sess->eapFail;
1188 return sess->eapResp;
1190 return sess->eapReq;
1191 case EAPOL_eapNoReq:
1192 return sess->eapNoReq;
1193 case EAPOL_portEnabled:
1194 return sess->portEnabled;
1195 case EAPOL_eapTimeout:
1196 return sess->eapTimeout;
1202 static void radius_server_set_bool(void *ctx, enum eapol_bool_var variable,
1205 struct radius_session *sess = ctx;
1209 case EAPOL_eapSuccess:
1210 sess->eapSuccess = value;
1212 case EAPOL_eapRestart:
1213 sess->eapRestart = value;
1216 sess->eapFail = value;
1219 sess->eapResp = value;
1222 sess->eapReq = value;
1224 case EAPOL_eapNoReq:
1225 sess->eapNoReq = value;
1227 case EAPOL_portEnabled:
1228 sess->portEnabled = value;
1230 case EAPOL_eapTimeout:
1231 sess->eapTimeout = value;
1237 static void radius_server_set_eapReqData(void *ctx, const u8 *eapReqData,
1238 size_t eapReqDataLen)
1240 struct radius_session *sess = ctx;
1244 free(sess->eapReqData);
1245 sess->eapReqData = malloc(eapReqDataLen);
1246 if (sess->eapReqData) {
1247 memcpy(sess->eapReqData, eapReqData, eapReqDataLen);
1248 sess->eapReqDataLen = eapReqDataLen;
1250 sess->eapReqDataLen = 0;
1255 static void radius_server_set_eapKeyData(void *ctx, const u8 *eapKeyData,
1256 size_t eapKeyDataLen)
1258 struct radius_session *sess = ctx;
1263 free(sess->eapKeyData);
1265 sess->eapKeyData = malloc(eapKeyDataLen);
1266 if (sess->eapKeyData) {
1267 memcpy(sess->eapKeyData, eapKeyData, eapKeyDataLen);
1268 sess->eapKeyDataLen = eapKeyDataLen;
1270 sess->eapKeyDataLen = 0;
1273 sess->eapKeyData = NULL;
1274 sess->eapKeyDataLen = 0;
1279 static int radius_server_get_eap_user(void *ctx, const u8 *identity,
1280 size_t identity_len, int phase2,
1281 struct eap_user *user)
1283 struct radius_session *sess = ctx;
1284 const struct hostapd_eap_user *eap_user;
1287 eap_user = hostapd_get_eap_user(sess->server->hostapd_conf, identity,
1288 identity_len, phase2);
1289 if (eap_user == NULL)
1292 memset(user, 0, sizeof(*user));
1293 count = EAP_USER_MAX_METHODS;
1294 if (count > EAP_MAX_METHODS)
1295 count = EAP_MAX_METHODS;
1296 for (i = 0; i < count; i++) {
1297 user->methods[i].vendor = eap_user->methods[i].vendor;
1298 user->methods[i].method = eap_user->methods[i].method;
1301 if (eap_user->password) {
1302 user->password = malloc(eap_user->password_len);
1303 if (user->password == NULL)
1305 memcpy(user->password, eap_user->password,
1306 eap_user->password_len);
1307 user->password_len = eap_user->password_len;
1308 user->password_hash = eap_user->password_hash;
1310 user->force_version = eap_user->force_version;
1316 static struct eapol_callbacks radius_server_eapol_cb =
1318 .get_bool = radius_server_get_bool,
1319 .set_bool = radius_server_set_bool,
1320 .set_eapReqData = radius_server_set_eapReqData,
1321 .set_eapKeyData = radius_server_set_eapKeyData,
1322 .get_eap_user = radius_server_get_eap_user,
1326 void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx)
1328 struct radius_client *cli;
1329 struct radius_session *s, *sess = NULL;
1330 struct radius_msg *msg;
1335 for (cli = data->clients; cli; cli = cli->next) {
1336 for (s = cli->sessions; s; s = s->next) {
1337 if (s->eap == ctx && s->last_msg) {
1349 RADIUS_DEBUG("No session matched callback ctx");
1353 msg = sess->last_msg;
1354 sess->last_msg = NULL;
1355 eap_sm_pending_cb(sess->eap);
1356 if (radius_server_request(data, msg,
1357 (struct sockaddr *) &sess->last_from,
1358 sess->last_fromlen, cli,
1359 sess->last_from_addr,
1360 sess->last_from_port, sess) == -2)
1361 return; /* msg was stored with the session */
1363 radius_msg_free(msg);