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.
22 #include "eap_server/eap.h"
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 struct eap_eapol_interface *eap_if;
55 struct radius_msg *last_msg;
58 struct sockaddr_storage last_from;
59 socklen_t last_fromlen;
61 struct radius_msg *last_reply;
62 u8 last_authenticator[16];
65 struct radius_client {
66 struct radius_client *next;
70 struct in6_addr addr6;
71 struct in6_addr mask6;
72 #endif /* CONFIG_IPV6 */
74 int shared_secret_len;
75 struct radius_session *sessions;
76 struct radius_server_counters counters;
79 struct radius_server_data {
81 struct radius_client *clients;
82 unsigned int next_sess_id;
85 void *eap_sim_db_priv;
87 u8 *pac_opaque_encr_key;
89 size_t eap_fast_a_id_len;
90 char *eap_fast_a_id_info;
93 int pac_key_refresh_time;
94 int eap_sim_aka_result_ind;
96 struct wps_context *wps;
98 struct os_time start_time;
99 struct radius_server_counters counters;
100 int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
101 int phase2, struct eap_user *user);
102 char *eap_req_id_text;
103 size_t eap_req_id_text_len;
107 extern int wpa_debug_level;
109 #define RADIUS_DEBUG(args...) \
110 wpa_printf(MSG_DEBUG, "RADIUS SRV: " args)
111 #define RADIUS_ERROR(args...) \
112 wpa_printf(MSG_ERROR, "RADIUS SRV: " args)
113 #define RADIUS_DUMP(args...) \
114 wpa_hexdump(MSG_MSGDUMP, "RADIUS SRV: " args)
115 #define RADIUS_DUMP_ASCII(args...) \
116 wpa_hexdump_ascii(MSG_MSGDUMP, "RADIUS SRV: " args)
119 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx);
123 static struct radius_client *
124 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr,
127 struct radius_client *client = data->clients;
132 struct in6_addr *addr6;
135 addr6 = (struct in6_addr *) addr;
136 for (i = 0; i < 16; i++) {
137 if ((addr6->s6_addr[i] &
138 client->mask6.s6_addr[i]) !=
139 (client->addr6.s6_addr[i] &
140 client->mask6.s6_addr[i])) {
149 #endif /* CONFIG_IPV6 */
150 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) ==
151 (addr->s_addr & client->mask.s_addr)) {
155 client = client->next;
162 static struct radius_session *
163 radius_server_get_session(struct radius_client *client, unsigned int sess_id)
165 struct radius_session *sess = client->sessions;
168 if (sess->sess_id == sess_id) {
178 static void radius_server_session_free(struct radius_server_data *data,
179 struct radius_session *sess)
181 eloop_cancel_timeout(radius_server_session_timeout, data, sess);
182 eap_server_sm_deinit(sess->eap);
183 if (sess->last_msg) {
184 radius_msg_free(sess->last_msg);
185 os_free(sess->last_msg);
187 os_free(sess->last_from_addr);
188 if (sess->last_reply) {
189 radius_msg_free(sess->last_reply);
190 os_free(sess->last_reply);
197 static void radius_server_session_remove_timeout(void *eloop_ctx,
200 static void radius_server_session_remove(struct radius_server_data *data,
201 struct radius_session *sess)
203 struct radius_client *client = sess->client;
204 struct radius_session *session, *prev;
206 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
209 session = client->sessions;
211 if (session == sess) {
213 client->sessions = sess->next;
215 prev->next = sess->next;
217 radius_server_session_free(data, sess);
221 session = session->next;
226 static void radius_server_session_remove_timeout(void *eloop_ctx,
229 struct radius_server_data *data = eloop_ctx;
230 struct radius_session *sess = timeout_ctx;
231 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id);
232 radius_server_session_remove(data, sess);
236 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx)
238 struct radius_server_data *data = eloop_ctx;
239 struct radius_session *sess = timeout_ctx;
241 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id);
242 radius_server_session_remove(data, sess);
246 static struct radius_session *
247 radius_server_new_session(struct radius_server_data *data,
248 struct radius_client *client)
250 struct radius_session *sess;
252 if (data->num_sess >= RADIUS_MAX_SESSION) {
253 RADIUS_DEBUG("Maximum number of existing session - no room "
254 "for a new session");
258 sess = os_zalloc(sizeof(*sess));
263 sess->client = client;
264 sess->sess_id = data->next_sess_id++;
265 sess->next = client->sessions;
266 client->sessions = sess;
267 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0,
268 radius_server_session_timeout, data, sess);
274 static struct radius_session *
275 radius_server_get_new_session(struct radius_server_data *data,
276 struct radius_client *client,
277 struct radius_msg *msg)
282 struct radius_session *sess;
283 struct eap_config eap_conf;
285 RADIUS_DEBUG("Creating a new session");
287 user = os_malloc(256);
291 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256);
292 if (res < 0 || res > 256) {
293 RADIUS_DEBUG("Could not get User-Name");
298 RADIUS_DUMP_ASCII("User-Name", user, user_len);
300 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL);
304 RADIUS_DEBUG("Matching user entry found");
305 sess = radius_server_new_session(data, client);
307 RADIUS_DEBUG("Failed to create a new session");
311 RADIUS_DEBUG("User-Name not found from user database");
315 os_memset(&eap_conf, 0, sizeof(eap_conf));
316 eap_conf.ssl_ctx = data->ssl_ctx;
317 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv;
318 eap_conf.backend_auth = TRUE;
319 eap_conf.eap_server = 1;
320 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key;
321 eap_conf.eap_fast_a_id = data->eap_fast_a_id;
322 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len;
323 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info;
324 eap_conf.eap_fast_prov = data->eap_fast_prov;
325 eap_conf.pac_key_lifetime = data->pac_key_lifetime;
326 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time;
327 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind;
328 eap_conf.tnc = data->tnc;
329 eap_conf.wps = data->wps;
330 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb,
332 if (sess->eap == NULL) {
333 RADIUS_DEBUG("Failed to initialize EAP state machine for the "
335 radius_server_session_free(data, sess);
338 sess->eap_if = eap_get_interface(sess->eap);
339 sess->eap_if->eapRestart = TRUE;
340 sess->eap_if->portEnabled = TRUE;
342 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id);
348 static struct radius_msg *
349 radius_server_encapsulate_eap(struct radius_server_data *data,
350 struct radius_client *client,
351 struct radius_session *sess,
352 struct radius_msg *request)
354 struct radius_msg *msg;
356 unsigned int sess_id;
358 if (sess->eap_if->eapFail) {
359 sess->eap_if->eapFail = FALSE;
360 code = RADIUS_CODE_ACCESS_REJECT;
361 } else if (sess->eap_if->eapSuccess) {
362 sess->eap_if->eapSuccess = FALSE;
363 code = RADIUS_CODE_ACCESS_ACCEPT;
365 sess->eap_if->eapReq = FALSE;
366 code = RADIUS_CODE_ACCESS_CHALLENGE;
369 msg = radius_msg_new(code, request->hdr->identifier);
371 RADIUS_DEBUG("Failed to allocate reply message");
375 sess_id = htonl(sess->sess_id);
376 if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
377 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
378 (u8 *) &sess_id, sizeof(sess_id))) {
379 RADIUS_DEBUG("Failed to add State attribute");
382 if (sess->eap_if->eapReqData &&
383 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
384 wpabuf_len(sess->eap_if->eapReqData))) {
385 RADIUS_DEBUG("Failed to add EAP-Message attribute");
388 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
390 if (sess->eap_if->eapKeyDataLen > 64) {
393 len = sess->eap_if->eapKeyDataLen / 2;
395 if (!radius_msg_add_mppe_keys(msg, request->hdr->authenticator,
396 (u8 *) client->shared_secret,
397 client->shared_secret_len,
398 sess->eap_if->eapKeyData + len,
399 len, sess->eap_if->eapKeyData,
401 RADIUS_DEBUG("Failed to add MPPE key attributes");
405 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
406 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
407 radius_msg_free(msg);
412 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
413 client->shared_secret_len,
414 request->hdr->authenticator) < 0) {
415 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
422 static int radius_server_reject(struct radius_server_data *data,
423 struct radius_client *client,
424 struct radius_msg *request,
425 struct sockaddr *from, socklen_t fromlen,
426 const char *from_addr, int from_port)
428 struct radius_msg *msg;
430 struct eap_hdr eapfail;
432 RADIUS_DEBUG("Reject invalid request from %s:%d",
433 from_addr, from_port);
435 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT,
436 request->hdr->identifier);
441 os_memset(&eapfail, 0, sizeof(eapfail));
442 eapfail.code = EAP_CODE_FAILURE;
443 eapfail.identifier = 0;
444 eapfail.length = host_to_be16(sizeof(eapfail));
446 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
447 RADIUS_DEBUG("Failed to add EAP-Message attribute");
450 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
451 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
452 radius_msg_free(msg);
457 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
458 client->shared_secret_len,
459 request->hdr->authenticator) < 0) {
460 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
463 if (wpa_debug_level <= MSG_MSGDUMP) {
464 radius_msg_dump(msg);
467 data->counters.access_rejects++;
468 client->counters.access_rejects++;
469 if (sendto(data->auth_sock, msg->buf, msg->buf_used, 0,
470 (struct sockaddr *) from, sizeof(*from)) < 0) {
471 perror("sendto[RADIUS SRV]");
475 radius_msg_free(msg);
482 static int radius_server_request(struct radius_server_data *data,
483 struct radius_msg *msg,
484 struct sockaddr *from, socklen_t fromlen,
485 struct radius_client *client,
486 const char *from_addr, int from_port,
487 struct radius_session *force_sess)
491 int res, state_included = 0;
494 struct radius_session *sess;
495 struct radius_msg *reply;
500 res = radius_msg_get_attr(msg, RADIUS_ATTR_STATE, statebuf,
502 state_included = res >= 0;
503 if (res == sizeof(statebuf)) {
504 state = WPA_GET_BE32(statebuf);
505 sess = radius_server_get_session(client, state);
512 RADIUS_DEBUG("Request for session 0x%x", sess->sess_id);
513 } else if (state_included) {
514 RADIUS_DEBUG("State attribute included but no session found");
515 radius_server_reject(data, client, msg, from, fromlen,
516 from_addr, from_port);
519 sess = radius_server_get_new_session(data, client, msg);
521 RADIUS_DEBUG("Could not create a new session");
522 radius_server_reject(data, client, msg, from, fromlen,
523 from_addr, from_port);
528 if (sess->last_from_port == from_port &&
529 sess->last_identifier == msg->hdr->identifier &&
530 os_memcmp(sess->last_authenticator, msg->hdr->authenticator, 16) ==
532 RADIUS_DEBUG("Duplicate message from %s", from_addr);
533 data->counters.dup_access_requests++;
534 client->counters.dup_access_requests++;
536 if (sess->last_reply) {
537 res = sendto(data->auth_sock, sess->last_reply->buf,
538 sess->last_reply->buf_used, 0,
539 (struct sockaddr *) from, fromlen);
541 perror("sendto[RADIUS SRV]");
546 RADIUS_DEBUG("No previous reply available for duplicate "
551 eap = radius_msg_get_eap(msg, &eap_len);
553 RADIUS_DEBUG("No EAP-Message in RADIUS packet from %s",
555 data->counters.packets_dropped++;
556 client->counters.packets_dropped++;
560 RADIUS_DUMP("Received EAP data", eap, eap_len);
562 /* FIX: if Code is Request, Success, or Failure, send Access-Reject;
563 * RFC3579 Sect. 2.6.2.
564 * Include EAP-Response/Nak with no preferred method if
566 * If code is not 1-4, discard the packet silently.
567 * Or is this already done by the EAP state machine? */
569 wpabuf_free(sess->eap_if->eapRespData);
570 sess->eap_if->eapRespData = wpabuf_alloc_ext_data(eap, eap_len);
571 if (sess->eap_if->eapRespData == NULL)
574 sess->eap_if->eapResp = TRUE;
575 eap_server_sm_step(sess->eap);
577 if ((sess->eap_if->eapReq || sess->eap_if->eapSuccess ||
578 sess->eap_if->eapFail) && sess->eap_if->eapReqData) {
579 RADIUS_DUMP("EAP data from the state machine",
580 wpabuf_head(sess->eap_if->eapReqData),
581 wpabuf_len(sess->eap_if->eapReqData));
582 } else if (sess->eap_if->eapFail) {
583 RADIUS_DEBUG("No EAP data from the state machine, but eapFail "
585 } else if (eap_sm_method_pending(sess->eap)) {
586 if (sess->last_msg) {
587 radius_msg_free(sess->last_msg);
588 os_free(sess->last_msg);
590 sess->last_msg = msg;
591 sess->last_from_port = from_port;
592 os_free(sess->last_from_addr);
593 sess->last_from_addr = os_strdup(from_addr);
594 sess->last_fromlen = fromlen;
595 os_memcpy(&sess->last_from, from, fromlen);
598 RADIUS_DEBUG("No EAP data from the state machine - ignore this"
599 " Access-Request silently (assuming it was a "
601 data->counters.packets_dropped++;
602 client->counters.packets_dropped++;
606 reply = radius_server_encapsulate_eap(data, client, sess, msg);
609 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port);
610 if (wpa_debug_level <= MSG_MSGDUMP) {
611 radius_msg_dump(reply);
614 switch (reply->hdr->code) {
615 case RADIUS_CODE_ACCESS_ACCEPT:
616 data->counters.access_accepts++;
617 client->counters.access_accepts++;
619 case RADIUS_CODE_ACCESS_REJECT:
620 data->counters.access_rejects++;
621 client->counters.access_rejects++;
623 case RADIUS_CODE_ACCESS_CHALLENGE:
624 data->counters.access_challenges++;
625 client->counters.access_challenges++;
628 res = sendto(data->auth_sock, reply->buf, reply->buf_used, 0,
629 (struct sockaddr *) from, fromlen);
631 perror("sendto[RADIUS SRV]");
633 if (sess->last_reply) {
634 radius_msg_free(sess->last_reply);
635 os_free(sess->last_reply);
637 sess->last_reply = reply;
638 sess->last_from_port = from_port;
639 sess->last_identifier = msg->hdr->identifier;
640 os_memcpy(sess->last_authenticator, msg->hdr->authenticator,
643 data->counters.packets_dropped++;
644 client->counters.packets_dropped++;
647 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail) {
648 RADIUS_DEBUG("Removing completed session 0x%x after timeout",
650 eloop_cancel_timeout(radius_server_session_remove_timeout,
652 eloop_register_timeout(10, 0,
653 radius_server_session_remove_timeout,
661 static void radius_server_receive_auth(int sock, void *eloop_ctx,
664 struct radius_server_data *data = eloop_ctx;
666 struct sockaddr_storage from;
669 struct radius_client *client = NULL;
670 struct radius_msg *msg = NULL;
674 buf = os_malloc(RADIUS_MAX_MSG_LEN);
679 fromlen = sizeof(from);
680 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
681 (struct sockaddr *) &from, &fromlen);
683 perror("recvfrom[radius_server]");
689 struct sockaddr_in6 *from6 = (struct sockaddr_in6 *) &from;
690 if (inet_ntop(AF_INET6, &from6->sin6_addr, abuf, sizeof(abuf))
693 from_port = ntohs(from6->sin6_port);
694 RADIUS_DEBUG("Received %d bytes from %s:%d",
695 len, abuf, from_port);
697 client = radius_server_get_client(data,
699 &from6->sin6_addr, 1);
701 #endif /* CONFIG_IPV6 */
704 struct sockaddr_in *from4 = (struct sockaddr_in *) &from;
705 os_strlcpy(abuf, inet_ntoa(from4->sin_addr), sizeof(abuf));
706 from_port = ntohs(from4->sin_port);
707 RADIUS_DEBUG("Received %d bytes from %s:%d",
708 len, abuf, from_port);
710 client = radius_server_get_client(data, &from4->sin_addr, 0);
713 RADIUS_DUMP("Received data", buf, len);
715 if (client == NULL) {
716 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
717 data->counters.invalid_requests++;
721 msg = radius_msg_parse(buf, len);
723 RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
724 data->counters.malformed_access_requests++;
725 client->counters.malformed_access_requests++;
732 if (wpa_debug_level <= MSG_MSGDUMP) {
733 radius_msg_dump(msg);
736 if (msg->hdr->code != RADIUS_CODE_ACCESS_REQUEST) {
737 RADIUS_DEBUG("Unexpected RADIUS code %d", msg->hdr->code);
738 data->counters.unknown_types++;
739 client->counters.unknown_types++;
743 data->counters.access_requests++;
744 client->counters.access_requests++;
746 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret,
747 client->shared_secret_len, NULL)) {
748 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf);
749 data->counters.bad_authenticators++;
750 client->counters.bad_authenticators++;
754 if (radius_server_request(data, msg, (struct sockaddr *) &from,
755 fromlen, client, abuf, from_port, NULL) ==
757 return; /* msg was stored with the session */
761 radius_msg_free(msg);
768 static int radius_server_disable_pmtu_discovery(int s)
771 #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
772 /* Turn off Path MTU discovery on IPv4/UDP sockets. */
773 int action = IP_PMTUDISC_DONT;
774 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action,
777 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: "
778 "%s", strerror(errno));
784 static int radius_server_open_socket(int port)
787 struct sockaddr_in addr;
789 s = socket(PF_INET, SOCK_DGRAM, 0);
795 radius_server_disable_pmtu_discovery(s);
797 os_memset(&addr, 0, sizeof(addr));
798 addr.sin_family = AF_INET;
799 addr.sin_port = htons(port);
800 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
811 static int radius_server_open_socket6(int port)
814 struct sockaddr_in6 addr;
816 s = socket(PF_INET6, SOCK_DGRAM, 0);
818 perror("socket[IPv6]");
822 os_memset(&addr, 0, sizeof(addr));
823 addr.sin6_family = AF_INET6;
824 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any));
825 addr.sin6_port = htons(port);
826 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
834 #endif /* CONFIG_IPV6 */
837 static void radius_server_free_sessions(struct radius_server_data *data,
838 struct radius_session *sessions)
840 struct radius_session *session, *prev;
845 session = session->next;
846 radius_server_session_free(data, prev);
851 static void radius_server_free_clients(struct radius_server_data *data,
852 struct radius_client *clients)
854 struct radius_client *client, *prev;
859 client = client->next;
861 radius_server_free_sessions(data, prev->sessions);
862 os_free(prev->shared_secret);
868 static struct radius_client *
869 radius_server_read_clients(const char *client_file, int ipv6)
872 const int buf_size = 1024;
874 struct radius_client *clients, *tail, *entry;
875 int line = 0, mask, failed = 0, i;
878 struct in6_addr addr6;
879 #endif /* CONFIG_IPV6 */
882 f = fopen(client_file, "r");
884 RADIUS_ERROR("Could not open client file '%s'", client_file);
888 buf = os_malloc(buf_size);
894 clients = tail = NULL;
895 while (fgets(buf, buf_size, f)) {
896 /* Configuration file format:
897 * 192.168.1.0/24 secret
899 * fe80::211:22ff:fe33:4455/64 secretipv6
902 buf[buf_size - 1] = '\0';
904 while (*pos != '\0' && *pos != '\n')
908 if (*buf == '\0' || *buf == '#')
912 while ((*pos >= '0' && *pos <= '9') || *pos == '.' ||
913 (*pos >= 'a' && *pos <= 'f') || *pos == ':' ||
914 (*pos >= 'A' && *pos <= 'F')) {
926 mask = strtol(pos, &end, 10);
928 (mask < 0 || mask > (ipv6 ? 128 : 32))) {
934 mask = ipv6 ? 128 : 32;
938 if (!ipv6 && inet_aton(buf, &addr) == 0) {
943 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) {
944 if (inet_pton(AF_INET, buf, &addr) <= 0) {
948 /* Convert IPv4 address to IPv6 */
951 os_memset(addr6.s6_addr, 0, 10);
952 addr6.s6_addr[10] = 0xff;
953 addr6.s6_addr[11] = 0xff;
954 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr,
957 #endif /* CONFIG_IPV6 */
959 while (*pos == ' ' || *pos == '\t') {
968 entry = os_zalloc(sizeof(*entry));
973 entry->shared_secret = os_strdup(pos);
974 if (entry->shared_secret == NULL) {
979 entry->shared_secret_len = os_strlen(entry->shared_secret);
980 entry->addr.s_addr = addr.s_addr;
983 for (i = 0; i < mask; i++)
984 val |= 1 << (31 - i);
985 entry->mask.s_addr = htonl(val);
989 int offset = mask / 8;
991 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16);
992 os_memset(entry->mask6.s6_addr, 0xff, offset);
994 for (i = 0; i < (mask % 8); i++)
997 entry->mask6.s6_addr[offset] = val;
999 #endif /* CONFIG_IPV6 */
1002 clients = tail = entry;
1010 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file);
1011 radius_server_free_clients(NULL, clients);
1022 struct radius_server_data *
1023 radius_server_init(struct radius_server_conf *conf)
1025 struct radius_server_data *data;
1029 fprintf(stderr, "RADIUS server compiled without IPv6 "
1033 #endif /* CONFIG_IPV6 */
1035 data = os_zalloc(sizeof(*data));
1039 os_get_time(&data->start_time);
1040 data->conf_ctx = conf->conf_ctx;
1041 data->eap_sim_db_priv = conf->eap_sim_db_priv;
1042 data->ssl_ctx = conf->ssl_ctx;
1043 data->ipv6 = conf->ipv6;
1044 if (conf->pac_opaque_encr_key) {
1045 data->pac_opaque_encr_key = os_malloc(16);
1046 os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key,
1049 if (conf->eap_fast_a_id) {
1050 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len);
1051 if (data->eap_fast_a_id) {
1052 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id,
1053 conf->eap_fast_a_id_len);
1054 data->eap_fast_a_id_len = conf->eap_fast_a_id_len;
1057 if (conf->eap_fast_a_id_info)
1058 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info);
1059 data->eap_fast_prov = conf->eap_fast_prov;
1060 data->pac_key_lifetime = conf->pac_key_lifetime;
1061 data->pac_key_refresh_time = conf->pac_key_refresh_time;
1062 data->get_eap_user = conf->get_eap_user;
1063 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1064 data->tnc = conf->tnc;
1065 data->wps = conf->wps;
1066 if (conf->eap_req_id_text) {
1067 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len);
1068 if (data->eap_req_id_text) {
1069 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text,
1070 conf->eap_req_id_text_len);
1071 data->eap_req_id_text_len = conf->eap_req_id_text_len;
1075 data->clients = radius_server_read_clients(conf->client_file,
1077 if (data->clients == NULL) {
1078 printf("No RADIUS clients configured.\n");
1079 radius_server_deinit(data);
1085 data->auth_sock = radius_server_open_socket6(conf->auth_port);
1087 #endif /* CONFIG_IPV6 */
1088 data->auth_sock = radius_server_open_socket(conf->auth_port);
1089 if (data->auth_sock < 0) {
1090 printf("Failed to open UDP socket for RADIUS authentication "
1092 radius_server_deinit(data);
1095 if (eloop_register_read_sock(data->auth_sock,
1096 radius_server_receive_auth,
1098 radius_server_deinit(data);
1106 void radius_server_deinit(struct radius_server_data *data)
1111 if (data->auth_sock >= 0) {
1112 eloop_unregister_read_sock(data->auth_sock);
1113 close(data->auth_sock);
1116 radius_server_free_clients(data, data->clients);
1118 os_free(data->pac_opaque_encr_key);
1119 os_free(data->eap_fast_a_id);
1120 os_free(data->eap_fast_a_id_info);
1121 os_free(data->eap_req_id_text);
1126 int radius_server_get_mib(struct radius_server_data *data, char *buf,
1133 struct radius_client *cli;
1135 /* RFC 2619 - RADIUS Authentication Server MIB */
1137 if (data == NULL || buflen == 0)
1144 uptime = (now.sec - data->start_time.sec) * 100 +
1145 ((now.usec - data->start_time.usec) / 10000) % 100;
1146 ret = os_snprintf(pos, end - pos,
1147 "RADIUS-AUTH-SERVER-MIB\n"
1148 "radiusAuthServIdent=hostapd\n"
1149 "radiusAuthServUpTime=%d\n"
1150 "radiusAuthServResetTime=0\n"
1151 "radiusAuthServConfigReset=4\n",
1153 if (ret < 0 || ret >= end - pos) {
1159 ret = os_snprintf(pos, end - pos,
1160 "radiusAuthServTotalAccessRequests=%u\n"
1161 "radiusAuthServTotalInvalidRequests=%u\n"
1162 "radiusAuthServTotalDupAccessRequests=%u\n"
1163 "radiusAuthServTotalAccessAccepts=%u\n"
1164 "radiusAuthServTotalAccessRejects=%u\n"
1165 "radiusAuthServTotalAccessChallenges=%u\n"
1166 "radiusAuthServTotalMalformedAccessRequests=%u\n"
1167 "radiusAuthServTotalBadAuthenticators=%u\n"
1168 "radiusAuthServTotalPacketsDropped=%u\n"
1169 "radiusAuthServTotalUnknownTypes=%u\n",
1170 data->counters.access_requests,
1171 data->counters.invalid_requests,
1172 data->counters.dup_access_requests,
1173 data->counters.access_accepts,
1174 data->counters.access_rejects,
1175 data->counters.access_challenges,
1176 data->counters.malformed_access_requests,
1177 data->counters.bad_authenticators,
1178 data->counters.packets_dropped,
1179 data->counters.unknown_types);
1180 if (ret < 0 || ret >= end - pos) {
1186 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) {
1187 char abuf[50], mbuf[50];
1190 if (inet_ntop(AF_INET6, &cli->addr6, abuf,
1191 sizeof(abuf)) == NULL)
1193 if (inet_ntop(AF_INET6, &cli->mask6, abuf,
1194 sizeof(mbuf)) == NULL)
1197 #endif /* CONFIG_IPV6 */
1199 os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf));
1200 os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf));
1203 ret = os_snprintf(pos, end - pos,
1204 "radiusAuthClientIndex=%u\n"
1205 "radiusAuthClientAddress=%s/%s\n"
1206 "radiusAuthServAccessRequests=%u\n"
1207 "radiusAuthServDupAccessRequests=%u\n"
1208 "radiusAuthServAccessAccepts=%u\n"
1209 "radiusAuthServAccessRejects=%u\n"
1210 "radiusAuthServAccessChallenges=%u\n"
1211 "radiusAuthServMalformedAccessRequests=%u\n"
1212 "radiusAuthServBadAuthenticators=%u\n"
1213 "radiusAuthServPacketsDropped=%u\n"
1214 "radiusAuthServUnknownTypes=%u\n",
1217 cli->counters.access_requests,
1218 cli->counters.dup_access_requests,
1219 cli->counters.access_accepts,
1220 cli->counters.access_rejects,
1221 cli->counters.access_challenges,
1222 cli->counters.malformed_access_requests,
1223 cli->counters.bad_authenticators,
1224 cli->counters.packets_dropped,
1225 cli->counters.unknown_types);
1226 if (ret < 0 || ret >= end - pos) {
1237 static int radius_server_get_eap_user(void *ctx, const u8 *identity,
1238 size_t identity_len, int phase2,
1239 struct eap_user *user)
1241 struct radius_session *sess = ctx;
1242 struct radius_server_data *data = sess->server;
1244 return data->get_eap_user(data->conf_ctx, identity, identity_len,
1249 static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len)
1251 struct radius_session *sess = ctx;
1252 struct radius_server_data *data = sess->server;
1253 *len = data->eap_req_id_text_len;
1254 return data->eap_req_id_text;
1258 static struct eapol_callbacks radius_server_eapol_cb =
1260 .get_eap_user = radius_server_get_eap_user,
1261 .get_eap_req_id_text = radius_server_get_eap_req_id_text,
1265 void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx)
1267 struct radius_client *cli;
1268 struct radius_session *s, *sess = NULL;
1269 struct radius_msg *msg;
1274 for (cli = data->clients; cli; cli = cli->next) {
1275 for (s = cli->sessions; s; s = s->next) {
1276 if (s->eap == ctx && s->last_msg) {
1288 RADIUS_DEBUG("No session matched callback ctx");
1292 msg = sess->last_msg;
1293 sess->last_msg = NULL;
1294 eap_sm_pending_cb(sess->eap);
1295 if (radius_server_request(data, msg,
1296 (struct sockaddr *) &sess->last_from,
1297 sess->last_fromlen, cli,
1298 sess->last_from_addr,
1299 sess->last_from_port, sess) == -2)
1300 return; /* msg was stored with the session */
1302 radius_msg_free(msg);