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);
120 static void radius_server_session_remove_timeout(void *eloop_ctx,
124 static struct radius_client *
125 radius_server_get_client(struct radius_server_data *data, struct in_addr *addr,
128 struct radius_client *client = data->clients;
133 struct in6_addr *addr6;
136 addr6 = (struct in6_addr *) addr;
137 for (i = 0; i < 16; i++) {
138 if ((addr6->s6_addr[i] &
139 client->mask6.s6_addr[i]) !=
140 (client->addr6.s6_addr[i] &
141 client->mask6.s6_addr[i])) {
150 #endif /* CONFIG_IPV6 */
151 if (!ipv6 && (client->addr.s_addr & client->mask.s_addr) ==
152 (addr->s_addr & client->mask.s_addr)) {
156 client = client->next;
163 static struct radius_session *
164 radius_server_get_session(struct radius_client *client, unsigned int sess_id)
166 struct radius_session *sess = client->sessions;
169 if (sess->sess_id == sess_id) {
179 static void radius_server_session_free(struct radius_server_data *data,
180 struct radius_session *sess)
182 eloop_cancel_timeout(radius_server_session_timeout, data, sess);
183 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
184 eap_server_sm_deinit(sess->eap);
185 if (sess->last_msg) {
186 radius_msg_free(sess->last_msg);
187 os_free(sess->last_msg);
189 os_free(sess->last_from_addr);
190 if (sess->last_reply) {
191 radius_msg_free(sess->last_reply);
192 os_free(sess->last_reply);
199 static void radius_server_session_remove(struct radius_server_data *data,
200 struct radius_session *sess)
202 struct radius_client *client = sess->client;
203 struct radius_session *session, *prev;
205 eloop_cancel_timeout(radius_server_session_remove_timeout, data, sess);
208 session = client->sessions;
210 if (session == sess) {
212 client->sessions = sess->next;
214 prev->next = sess->next;
216 radius_server_session_free(data, sess);
220 session = session->next;
225 static void radius_server_session_remove_timeout(void *eloop_ctx,
228 struct radius_server_data *data = eloop_ctx;
229 struct radius_session *sess = timeout_ctx;
230 RADIUS_DEBUG("Removing completed session 0x%x", sess->sess_id);
231 radius_server_session_remove(data, sess);
235 static void radius_server_session_timeout(void *eloop_ctx, void *timeout_ctx)
237 struct radius_server_data *data = eloop_ctx;
238 struct radius_session *sess = timeout_ctx;
240 RADIUS_DEBUG("Timing out authentication session 0x%x", sess->sess_id);
241 radius_server_session_remove(data, sess);
245 static struct radius_session *
246 radius_server_new_session(struct radius_server_data *data,
247 struct radius_client *client)
249 struct radius_session *sess;
251 if (data->num_sess >= RADIUS_MAX_SESSION) {
252 RADIUS_DEBUG("Maximum number of existing session - no room "
253 "for a new session");
257 sess = os_zalloc(sizeof(*sess));
262 sess->client = client;
263 sess->sess_id = data->next_sess_id++;
264 sess->next = client->sessions;
265 client->sessions = sess;
266 eloop_register_timeout(RADIUS_SESSION_TIMEOUT, 0,
267 radius_server_session_timeout, data, sess);
273 static struct radius_session *
274 radius_server_get_new_session(struct radius_server_data *data,
275 struct radius_client *client,
276 struct radius_msg *msg)
281 struct radius_session *sess;
282 struct eap_config eap_conf;
284 RADIUS_DEBUG("Creating a new session");
286 user = os_malloc(256);
290 res = radius_msg_get_attr(msg, RADIUS_ATTR_USER_NAME, user, 256);
291 if (res < 0 || res > 256) {
292 RADIUS_DEBUG("Could not get User-Name");
297 RADIUS_DUMP_ASCII("User-Name", user, user_len);
299 res = data->get_eap_user(data->conf_ctx, user, user_len, 0, NULL);
303 RADIUS_DEBUG("Matching user entry found");
304 sess = radius_server_new_session(data, client);
306 RADIUS_DEBUG("Failed to create a new session");
310 RADIUS_DEBUG("User-Name not found from user database");
314 os_memset(&eap_conf, 0, sizeof(eap_conf));
315 eap_conf.ssl_ctx = data->ssl_ctx;
316 eap_conf.eap_sim_db_priv = data->eap_sim_db_priv;
317 eap_conf.backend_auth = TRUE;
318 eap_conf.eap_server = 1;
319 eap_conf.pac_opaque_encr_key = data->pac_opaque_encr_key;
320 eap_conf.eap_fast_a_id = data->eap_fast_a_id;
321 eap_conf.eap_fast_a_id_len = data->eap_fast_a_id_len;
322 eap_conf.eap_fast_a_id_info = data->eap_fast_a_id_info;
323 eap_conf.eap_fast_prov = data->eap_fast_prov;
324 eap_conf.pac_key_lifetime = data->pac_key_lifetime;
325 eap_conf.pac_key_refresh_time = data->pac_key_refresh_time;
326 eap_conf.eap_sim_aka_result_ind = data->eap_sim_aka_result_ind;
327 eap_conf.tnc = data->tnc;
328 eap_conf.wps = data->wps;
329 sess->eap = eap_server_sm_init(sess, &radius_server_eapol_cb,
331 if (sess->eap == NULL) {
332 RADIUS_DEBUG("Failed to initialize EAP state machine for the "
334 radius_server_session_free(data, sess);
337 sess->eap_if = eap_get_interface(sess->eap);
338 sess->eap_if->eapRestart = TRUE;
339 sess->eap_if->portEnabled = TRUE;
341 RADIUS_DEBUG("New session 0x%x initialized", sess->sess_id);
347 static struct radius_msg *
348 radius_server_encapsulate_eap(struct radius_server_data *data,
349 struct radius_client *client,
350 struct radius_session *sess,
351 struct radius_msg *request)
353 struct radius_msg *msg;
355 unsigned int sess_id;
357 if (sess->eap_if->eapFail) {
358 sess->eap_if->eapFail = FALSE;
359 code = RADIUS_CODE_ACCESS_REJECT;
360 } else if (sess->eap_if->eapSuccess) {
361 sess->eap_if->eapSuccess = FALSE;
362 code = RADIUS_CODE_ACCESS_ACCEPT;
364 sess->eap_if->eapReq = FALSE;
365 code = RADIUS_CODE_ACCESS_CHALLENGE;
368 msg = radius_msg_new(code, request->hdr->identifier);
370 RADIUS_DEBUG("Failed to allocate reply message");
374 sess_id = htonl(sess->sess_id);
375 if (code == RADIUS_CODE_ACCESS_CHALLENGE &&
376 !radius_msg_add_attr(msg, RADIUS_ATTR_STATE,
377 (u8 *) &sess_id, sizeof(sess_id))) {
378 RADIUS_DEBUG("Failed to add State attribute");
381 if (sess->eap_if->eapReqData &&
382 !radius_msg_add_eap(msg, wpabuf_head(sess->eap_if->eapReqData),
383 wpabuf_len(sess->eap_if->eapReqData))) {
384 RADIUS_DEBUG("Failed to add EAP-Message attribute");
387 if (code == RADIUS_CODE_ACCESS_ACCEPT && sess->eap_if->eapKeyData) {
389 if (sess->eap_if->eapKeyDataLen > 64) {
392 len = sess->eap_if->eapKeyDataLen / 2;
394 if (!radius_msg_add_mppe_keys(msg, request->hdr->authenticator,
395 (u8 *) client->shared_secret,
396 client->shared_secret_len,
397 sess->eap_if->eapKeyData + len,
398 len, sess->eap_if->eapKeyData,
400 RADIUS_DEBUG("Failed to add MPPE key attributes");
404 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
405 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
406 radius_msg_free(msg);
411 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
412 client->shared_secret_len,
413 request->hdr->authenticator) < 0) {
414 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
421 static int radius_server_reject(struct radius_server_data *data,
422 struct radius_client *client,
423 struct radius_msg *request,
424 struct sockaddr *from, socklen_t fromlen,
425 const char *from_addr, int from_port)
427 struct radius_msg *msg;
429 struct eap_hdr eapfail;
431 RADIUS_DEBUG("Reject invalid request from %s:%d",
432 from_addr, from_port);
434 msg = radius_msg_new(RADIUS_CODE_ACCESS_REJECT,
435 request->hdr->identifier);
440 os_memset(&eapfail, 0, sizeof(eapfail));
441 eapfail.code = EAP_CODE_FAILURE;
442 eapfail.identifier = 0;
443 eapfail.length = host_to_be16(sizeof(eapfail));
445 if (!radius_msg_add_eap(msg, (u8 *) &eapfail, sizeof(eapfail))) {
446 RADIUS_DEBUG("Failed to add EAP-Message attribute");
449 if (radius_msg_copy_attr(msg, request, RADIUS_ATTR_PROXY_STATE) < 0) {
450 RADIUS_DEBUG("Failed to copy Proxy-State attribute(s)");
451 radius_msg_free(msg);
456 if (radius_msg_finish_srv(msg, (u8 *) client->shared_secret,
457 client->shared_secret_len,
458 request->hdr->authenticator) < 0) {
459 RADIUS_DEBUG("Failed to add Message-Authenticator attribute");
462 if (wpa_debug_level <= MSG_MSGDUMP) {
463 radius_msg_dump(msg);
466 data->counters.access_rejects++;
467 client->counters.access_rejects++;
468 if (sendto(data->auth_sock, msg->buf, msg->buf_used, 0,
469 (struct sockaddr *) from, sizeof(*from)) < 0) {
470 perror("sendto[RADIUS SRV]");
474 radius_msg_free(msg);
481 static int radius_server_request(struct radius_server_data *data,
482 struct radius_msg *msg,
483 struct sockaddr *from, socklen_t fromlen,
484 struct radius_client *client,
485 const char *from_addr, int from_port,
486 struct radius_session *force_sess)
490 int res, state_included = 0;
493 struct radius_session *sess;
494 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 if (sess->eap_if->eapSuccess || sess->eap_if->eapFail)
609 reply = radius_server_encapsulate_eap(data, client, sess, msg);
612 RADIUS_DEBUG("Reply to %s:%d", from_addr, from_port);
613 if (wpa_debug_level <= MSG_MSGDUMP) {
614 radius_msg_dump(reply);
617 switch (reply->hdr->code) {
618 case RADIUS_CODE_ACCESS_ACCEPT:
619 data->counters.access_accepts++;
620 client->counters.access_accepts++;
622 case RADIUS_CODE_ACCESS_REJECT:
623 data->counters.access_rejects++;
624 client->counters.access_rejects++;
626 case RADIUS_CODE_ACCESS_CHALLENGE:
627 data->counters.access_challenges++;
628 client->counters.access_challenges++;
631 res = sendto(data->auth_sock, reply->buf, reply->buf_used, 0,
632 (struct sockaddr *) from, fromlen);
634 perror("sendto[RADIUS SRV]");
636 if (sess->last_reply) {
637 radius_msg_free(sess->last_reply);
638 os_free(sess->last_reply);
640 sess->last_reply = reply;
641 sess->last_from_port = from_port;
642 sess->last_identifier = msg->hdr->identifier;
643 os_memcpy(sess->last_authenticator, msg->hdr->authenticator,
646 data->counters.packets_dropped++;
647 client->counters.packets_dropped++;
651 RADIUS_DEBUG("Removing completed session 0x%x after timeout",
653 eloop_cancel_timeout(radius_server_session_remove_timeout,
655 eloop_register_timeout(10, 0,
656 radius_server_session_remove_timeout,
664 static void radius_server_receive_auth(int sock, void *eloop_ctx,
667 struct radius_server_data *data = eloop_ctx;
670 struct sockaddr_storage ss;
671 struct sockaddr_in sin;
673 struct sockaddr_in6 sin6;
674 #endif /* CONFIG_IPV6 */
678 struct radius_client *client = NULL;
679 struct radius_msg *msg = NULL;
683 buf = os_malloc(RADIUS_MAX_MSG_LEN);
688 fromlen = sizeof(from);
689 len = recvfrom(sock, buf, RADIUS_MAX_MSG_LEN, 0,
690 (struct sockaddr *) &from.ss, &fromlen);
692 perror("recvfrom[radius_server]");
698 if (inet_ntop(AF_INET6, &from.sin6.sin6_addr, abuf,
699 sizeof(abuf)) == NULL)
701 from_port = ntohs(from.sin6.sin6_port);
702 RADIUS_DEBUG("Received %d bytes from %s:%d",
703 len, abuf, from_port);
705 client = radius_server_get_client(data,
707 &from.sin6.sin6_addr, 1);
709 #endif /* CONFIG_IPV6 */
712 os_strlcpy(abuf, inet_ntoa(from.sin.sin_addr), sizeof(abuf));
713 from_port = ntohs(from.sin.sin_port);
714 RADIUS_DEBUG("Received %d bytes from %s:%d",
715 len, abuf, from_port);
717 client = radius_server_get_client(data, &from.sin.sin_addr, 0);
720 RADIUS_DUMP("Received data", buf, len);
722 if (client == NULL) {
723 RADIUS_DEBUG("Unknown client %s - packet ignored", abuf);
724 data->counters.invalid_requests++;
728 msg = radius_msg_parse(buf, len);
730 RADIUS_DEBUG("Parsing incoming RADIUS frame failed");
731 data->counters.malformed_access_requests++;
732 client->counters.malformed_access_requests++;
739 if (wpa_debug_level <= MSG_MSGDUMP) {
740 radius_msg_dump(msg);
743 if (msg->hdr->code != RADIUS_CODE_ACCESS_REQUEST) {
744 RADIUS_DEBUG("Unexpected RADIUS code %d", msg->hdr->code);
745 data->counters.unknown_types++;
746 client->counters.unknown_types++;
750 data->counters.access_requests++;
751 client->counters.access_requests++;
753 if (radius_msg_verify_msg_auth(msg, (u8 *) client->shared_secret,
754 client->shared_secret_len, NULL)) {
755 RADIUS_DEBUG("Invalid Message-Authenticator from %s", abuf);
756 data->counters.bad_authenticators++;
757 client->counters.bad_authenticators++;
761 if (radius_server_request(data, msg, (struct sockaddr *) &from,
762 fromlen, client, abuf, from_port, NULL) ==
764 return; /* msg was stored with the session */
768 radius_msg_free(msg);
775 static int radius_server_disable_pmtu_discovery(int s)
778 #if defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DONT)
779 /* Turn off Path MTU discovery on IPv4/UDP sockets. */
780 int action = IP_PMTUDISC_DONT;
781 r = setsockopt(s, IPPROTO_IP, IP_MTU_DISCOVER, &action,
784 wpa_printf(MSG_ERROR, "Failed to set IP_MTU_DISCOVER: "
785 "%s", strerror(errno));
791 static int radius_server_open_socket(int port)
794 struct sockaddr_in addr;
796 s = socket(PF_INET, SOCK_DGRAM, 0);
802 radius_server_disable_pmtu_discovery(s);
804 os_memset(&addr, 0, sizeof(addr));
805 addr.sin_family = AF_INET;
806 addr.sin_port = htons(port);
807 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
818 static int radius_server_open_socket6(int port)
821 struct sockaddr_in6 addr;
823 s = socket(PF_INET6, SOCK_DGRAM, 0);
825 perror("socket[IPv6]");
829 os_memset(&addr, 0, sizeof(addr));
830 addr.sin6_family = AF_INET6;
831 os_memcpy(&addr.sin6_addr, &in6addr_any, sizeof(in6addr_any));
832 addr.sin6_port = htons(port);
833 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
841 #endif /* CONFIG_IPV6 */
844 static void radius_server_free_sessions(struct radius_server_data *data,
845 struct radius_session *sessions)
847 struct radius_session *session, *prev;
852 session = session->next;
853 radius_server_session_free(data, prev);
858 static void radius_server_free_clients(struct radius_server_data *data,
859 struct radius_client *clients)
861 struct radius_client *client, *prev;
866 client = client->next;
868 radius_server_free_sessions(data, prev->sessions);
869 os_free(prev->shared_secret);
875 static struct radius_client *
876 radius_server_read_clients(const char *client_file, int ipv6)
879 const int buf_size = 1024;
881 struct radius_client *clients, *tail, *entry;
882 int line = 0, mask, failed = 0, i;
885 struct in6_addr addr6;
886 #endif /* CONFIG_IPV6 */
889 f = fopen(client_file, "r");
891 RADIUS_ERROR("Could not open client file '%s'", client_file);
895 buf = os_malloc(buf_size);
901 clients = tail = NULL;
902 while (fgets(buf, buf_size, f)) {
903 /* Configuration file format:
904 * 192.168.1.0/24 secret
906 * fe80::211:22ff:fe33:4455/64 secretipv6
909 buf[buf_size - 1] = '\0';
911 while (*pos != '\0' && *pos != '\n')
915 if (*buf == '\0' || *buf == '#')
919 while ((*pos >= '0' && *pos <= '9') || *pos == '.' ||
920 (*pos >= 'a' && *pos <= 'f') || *pos == ':' ||
921 (*pos >= 'A' && *pos <= 'F')) {
933 mask = strtol(pos, &end, 10);
935 (mask < 0 || mask > (ipv6 ? 128 : 32))) {
941 mask = ipv6 ? 128 : 32;
945 if (!ipv6 && inet_aton(buf, &addr) == 0) {
950 if (ipv6 && inet_pton(AF_INET6, buf, &addr6) <= 0) {
951 if (inet_pton(AF_INET, buf, &addr) <= 0) {
955 /* Convert IPv4 address to IPv6 */
958 os_memset(addr6.s6_addr, 0, 10);
959 addr6.s6_addr[10] = 0xff;
960 addr6.s6_addr[11] = 0xff;
961 os_memcpy(addr6.s6_addr + 12, (char *) &addr.s_addr,
964 #endif /* CONFIG_IPV6 */
966 while (*pos == ' ' || *pos == '\t') {
975 entry = os_zalloc(sizeof(*entry));
980 entry->shared_secret = os_strdup(pos);
981 if (entry->shared_secret == NULL) {
986 entry->shared_secret_len = os_strlen(entry->shared_secret);
987 entry->addr.s_addr = addr.s_addr;
990 for (i = 0; i < mask; i++)
991 val |= 1 << (31 - i);
992 entry->mask.s_addr = htonl(val);
996 int offset = mask / 8;
998 os_memcpy(entry->addr6.s6_addr, addr6.s6_addr, 16);
999 os_memset(entry->mask6.s6_addr, 0xff, offset);
1001 for (i = 0; i < (mask % 8); i++)
1002 val |= 1 << (7 - i);
1004 entry->mask6.s6_addr[offset] = val;
1006 #endif /* CONFIG_IPV6 */
1009 clients = tail = entry;
1017 RADIUS_ERROR("Invalid line %d in '%s'", line, client_file);
1018 radius_server_free_clients(NULL, clients);
1029 struct radius_server_data *
1030 radius_server_init(struct radius_server_conf *conf)
1032 struct radius_server_data *data;
1036 fprintf(stderr, "RADIUS server compiled without IPv6 "
1040 #endif /* CONFIG_IPV6 */
1042 data = os_zalloc(sizeof(*data));
1046 os_get_time(&data->start_time);
1047 data->conf_ctx = conf->conf_ctx;
1048 data->eap_sim_db_priv = conf->eap_sim_db_priv;
1049 data->ssl_ctx = conf->ssl_ctx;
1050 data->ipv6 = conf->ipv6;
1051 if (conf->pac_opaque_encr_key) {
1052 data->pac_opaque_encr_key = os_malloc(16);
1053 os_memcpy(data->pac_opaque_encr_key, conf->pac_opaque_encr_key,
1056 if (conf->eap_fast_a_id) {
1057 data->eap_fast_a_id = os_malloc(conf->eap_fast_a_id_len);
1058 if (data->eap_fast_a_id) {
1059 os_memcpy(data->eap_fast_a_id, conf->eap_fast_a_id,
1060 conf->eap_fast_a_id_len);
1061 data->eap_fast_a_id_len = conf->eap_fast_a_id_len;
1064 if (conf->eap_fast_a_id_info)
1065 data->eap_fast_a_id_info = os_strdup(conf->eap_fast_a_id_info);
1066 data->eap_fast_prov = conf->eap_fast_prov;
1067 data->pac_key_lifetime = conf->pac_key_lifetime;
1068 data->pac_key_refresh_time = conf->pac_key_refresh_time;
1069 data->get_eap_user = conf->get_eap_user;
1070 data->eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
1071 data->tnc = conf->tnc;
1072 data->wps = conf->wps;
1073 if (conf->eap_req_id_text) {
1074 data->eap_req_id_text = os_malloc(conf->eap_req_id_text_len);
1075 if (data->eap_req_id_text) {
1076 os_memcpy(data->eap_req_id_text, conf->eap_req_id_text,
1077 conf->eap_req_id_text_len);
1078 data->eap_req_id_text_len = conf->eap_req_id_text_len;
1082 data->clients = radius_server_read_clients(conf->client_file,
1084 if (data->clients == NULL) {
1085 printf("No RADIUS clients configured.\n");
1086 radius_server_deinit(data);
1092 data->auth_sock = radius_server_open_socket6(conf->auth_port);
1094 #endif /* CONFIG_IPV6 */
1095 data->auth_sock = radius_server_open_socket(conf->auth_port);
1096 if (data->auth_sock < 0) {
1097 printf("Failed to open UDP socket for RADIUS authentication "
1099 radius_server_deinit(data);
1102 if (eloop_register_read_sock(data->auth_sock,
1103 radius_server_receive_auth,
1105 radius_server_deinit(data);
1113 void radius_server_deinit(struct radius_server_data *data)
1118 if (data->auth_sock >= 0) {
1119 eloop_unregister_read_sock(data->auth_sock);
1120 close(data->auth_sock);
1123 radius_server_free_clients(data, data->clients);
1125 os_free(data->pac_opaque_encr_key);
1126 os_free(data->eap_fast_a_id);
1127 os_free(data->eap_fast_a_id_info);
1128 os_free(data->eap_req_id_text);
1133 int radius_server_get_mib(struct radius_server_data *data, char *buf,
1140 struct radius_client *cli;
1142 /* RFC 2619 - RADIUS Authentication Server MIB */
1144 if (data == NULL || buflen == 0)
1151 uptime = (now.sec - data->start_time.sec) * 100 +
1152 ((now.usec - data->start_time.usec) / 10000) % 100;
1153 ret = os_snprintf(pos, end - pos,
1154 "RADIUS-AUTH-SERVER-MIB\n"
1155 "radiusAuthServIdent=hostapd\n"
1156 "radiusAuthServUpTime=%d\n"
1157 "radiusAuthServResetTime=0\n"
1158 "radiusAuthServConfigReset=4\n",
1160 if (ret < 0 || ret >= end - pos) {
1166 ret = os_snprintf(pos, end - pos,
1167 "radiusAuthServTotalAccessRequests=%u\n"
1168 "radiusAuthServTotalInvalidRequests=%u\n"
1169 "radiusAuthServTotalDupAccessRequests=%u\n"
1170 "radiusAuthServTotalAccessAccepts=%u\n"
1171 "radiusAuthServTotalAccessRejects=%u\n"
1172 "radiusAuthServTotalAccessChallenges=%u\n"
1173 "radiusAuthServTotalMalformedAccessRequests=%u\n"
1174 "radiusAuthServTotalBadAuthenticators=%u\n"
1175 "radiusAuthServTotalPacketsDropped=%u\n"
1176 "radiusAuthServTotalUnknownTypes=%u\n",
1177 data->counters.access_requests,
1178 data->counters.invalid_requests,
1179 data->counters.dup_access_requests,
1180 data->counters.access_accepts,
1181 data->counters.access_rejects,
1182 data->counters.access_challenges,
1183 data->counters.malformed_access_requests,
1184 data->counters.bad_authenticators,
1185 data->counters.packets_dropped,
1186 data->counters.unknown_types);
1187 if (ret < 0 || ret >= end - pos) {
1193 for (cli = data->clients, idx = 0; cli; cli = cli->next, idx++) {
1194 char abuf[50], mbuf[50];
1197 if (inet_ntop(AF_INET6, &cli->addr6, abuf,
1198 sizeof(abuf)) == NULL)
1200 if (inet_ntop(AF_INET6, &cli->mask6, abuf,
1201 sizeof(mbuf)) == NULL)
1204 #endif /* CONFIG_IPV6 */
1206 os_strlcpy(abuf, inet_ntoa(cli->addr), sizeof(abuf));
1207 os_strlcpy(mbuf, inet_ntoa(cli->mask), sizeof(mbuf));
1210 ret = os_snprintf(pos, end - pos,
1211 "radiusAuthClientIndex=%u\n"
1212 "radiusAuthClientAddress=%s/%s\n"
1213 "radiusAuthServAccessRequests=%u\n"
1214 "radiusAuthServDupAccessRequests=%u\n"
1215 "radiusAuthServAccessAccepts=%u\n"
1216 "radiusAuthServAccessRejects=%u\n"
1217 "radiusAuthServAccessChallenges=%u\n"
1218 "radiusAuthServMalformedAccessRequests=%u\n"
1219 "radiusAuthServBadAuthenticators=%u\n"
1220 "radiusAuthServPacketsDropped=%u\n"
1221 "radiusAuthServUnknownTypes=%u\n",
1224 cli->counters.access_requests,
1225 cli->counters.dup_access_requests,
1226 cli->counters.access_accepts,
1227 cli->counters.access_rejects,
1228 cli->counters.access_challenges,
1229 cli->counters.malformed_access_requests,
1230 cli->counters.bad_authenticators,
1231 cli->counters.packets_dropped,
1232 cli->counters.unknown_types);
1233 if (ret < 0 || ret >= end - pos) {
1244 static int radius_server_get_eap_user(void *ctx, const u8 *identity,
1245 size_t identity_len, int phase2,
1246 struct eap_user *user)
1248 struct radius_session *sess = ctx;
1249 struct radius_server_data *data = sess->server;
1251 return data->get_eap_user(data->conf_ctx, identity, identity_len,
1256 static const char * radius_server_get_eap_req_id_text(void *ctx, size_t *len)
1258 struct radius_session *sess = ctx;
1259 struct radius_server_data *data = sess->server;
1260 *len = data->eap_req_id_text_len;
1261 return data->eap_req_id_text;
1265 static struct eapol_callbacks radius_server_eapol_cb =
1267 .get_eap_user = radius_server_get_eap_user,
1268 .get_eap_req_id_text = radius_server_get_eap_req_id_text,
1272 void radius_server_eap_pending_cb(struct radius_server_data *data, void *ctx)
1274 struct radius_client *cli;
1275 struct radius_session *s, *sess = NULL;
1276 struct radius_msg *msg;
1281 for (cli = data->clients; cli; cli = cli->next) {
1282 for (s = cli->sessions; s; s = s->next) {
1283 if (s->eap == ctx && s->last_msg) {
1295 RADIUS_DEBUG("No session matched callback ctx");
1299 msg = sess->last_msg;
1300 sess->last_msg = NULL;
1301 eap_sm_pending_cb(sess->eap);
1302 if (radius_server_request(data, msg,
1303 (struct sockaddr *) &sess->last_from,
1304 sess->last_fromlen, cli,
1305 sess->last_from_addr,
1306 sess->last_from_port, sess) == -2)
1307 return; /* msg was stored with the session */
1309 radius_msg_free(msg);