2 * Copyright (C) 2006-2009 Stig Venaas <venaas@uninett.no>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
9 /* Code contributions from:
11 * Arne Schwabe <schwabe at uni-paderborn.de>
12 * Maja Wolniewicz <mgw@umk.pl>
13 * Simon Leinen <simon.leinen@switch.ch>
14 * Stefan Winter <stefan.winter@restena.lu>
17 /* For UDP there is one server instance consisting of udpserverrd and udpserverth
18 * rd is responsible for init and launching wr
19 * For TLS there is a server instance that launches tlsserverrd for each TLS peer
20 * each tlsserverrd launches tlsserverwr
21 * For each UDP/TLS peer there is clientrd and clientwr, clientwr is responsible
22 * for init and launching rd
24 * serverrd will receive a request, processes it and puts it in the requestq of
25 * the appropriate clientwr
26 * clientwr monitors its requestq and sends requests
27 * clientrd looks for responses, processes them and puts them in the replyq of
28 * the peer the request came from
29 * serverwr monitors its reply and sends replies
31 * In addition to the main thread, we have:
32 * If UDP peers are configured, there will be 2 + 2 * #peers UDP threads
33 * If TLS peers are configured, there will initially be 2 * #peers TLS threads
34 * For each TLS peer connecting to us there will be 2 more TLS threads
35 * This is only for connected peers
36 * Example: With 3 UDP peers and 30 TLS peers, there will be a max of
37 * 1 + (2 + 2 * 3) + (2 * 30) + (2 * 30) = 129 threads
41 * May segfault when dtls connections go down? More testing needed
42 * Remove expired stuff from clients request list?
43 * Multiple outgoing connections if not enough IDs? (multiple servers per conf?)
44 * Useful for TCP accounting? Now we require separate server config for alt port
48 #include <sys/socket.h>
49 #include <netinet/in.h>
58 #include <sys/types.h>
61 #include <arpa/inet.h>
65 #include <openssl/ssl.h>
66 #include <openssl/rand.h>
67 #include <openssl/err.h>
68 #include <openssl/md5.h>
74 #include "radsecproxy.h"
80 static struct options options;
81 static struct list *clconfs, *srvconfs;
82 static struct list *realms;
83 static struct hash *rewriteconfs;
85 static pthread_mutex_t *ssl_locks = NULL;
86 static long *ssl_lock_count;
89 static const struct protodefs *protodefs[RAD_PROTOCOUNT];
91 /* minimum required declarations to avoid reordering code */
92 struct realm *adddynamicrealmserver(struct realm *realm, char *id);
93 int dynamicconfig(struct server *server);
94 int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val);
95 void freerealm(struct realm *realm);
96 void freeclsrvconf(struct clsrvconf *conf);
97 void freerq(struct request *rq);
98 void freerqoutdata(struct rqout *rqout);
99 void rmclientrq(struct request *rq, uint8_t id);
101 static const struct protodefs *(*protoinits[])(uint8_t) = { udpinit, tlsinit, tcpinit, dtlsinit };
103 uint8_t protoname2int(const char *name) {
106 for (i = 0; i < RAD_PROTOCOUNT; i++)
107 if (protodefs[i] && protodefs[i]->name && !strcasecmp(protodefs[i]->name, name))
112 /* callbacks for making OpenSSL thread safe */
113 unsigned long ssl_thread_id() {
114 return (unsigned long)pthread_self();
117 void ssl_locking_callback(int mode, int type, const char *file, int line) {
118 if (mode & CRYPTO_LOCK) {
119 pthread_mutex_lock(&ssl_locks[type]);
120 ssl_lock_count[type]++;
122 pthread_mutex_unlock(&ssl_locks[type]);
125 /* returns 1 if the len first bits are equal, else 0 */
126 int prefixmatch(void *a1, void *a2, uint8_t len) {
127 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
128 uint8_t r, l = len / 8;
129 if (l && memcmp(a1, a2, l))
134 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
137 /* returns next config with matching address, or NULL */
138 struct clsrvconf *find_conf(uint8_t type, struct sockaddr *addr, struct list *confs, struct list_node **cur, uint8_t server_p) {
139 struct list_node *entry;
140 struct clsrvconf *conf;
142 for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) {
143 conf = (struct clsrvconf *)entry->data;
144 if (conf->type == type && addressmatches(conf->hostports, addr, server_p)) {
153 struct clsrvconf *find_clconf(uint8_t type, struct sockaddr *addr, struct list_node **cur) {
154 return find_conf(type, addr, clconfs, cur, 0);
157 struct clsrvconf *find_srvconf(uint8_t type, struct sockaddr *addr, struct list_node **cur) {
158 return find_conf(type, addr, srvconfs, cur, 1);
161 /* returns next config of given type, or NULL */
162 struct clsrvconf *find_clconf_type(uint8_t type, struct list_node **cur) {
163 struct list_node *entry;
164 struct clsrvconf *conf;
166 for (entry = (cur && *cur ? list_next(*cur) : list_first(clconfs)); entry; entry = list_next(entry)) {
167 conf = (struct clsrvconf *)entry->data;
168 if (conf->type == type) {
177 struct gqueue *newqueue() {
180 q = malloc(sizeof(struct gqueue));
182 debugx(1, DBG_ERR, "malloc failed");
183 q->entries = list_create();
185 debugx(1, DBG_ERR, "malloc failed");
186 pthread_mutex_init(&q->mutex, NULL);
187 pthread_cond_init(&q->cond, NULL);
191 void removequeue(struct gqueue *q) {
192 struct list_node *entry;
196 pthread_mutex_lock(&q->mutex);
197 for (entry = list_first(q->entries); entry; entry = list_next(entry))
198 freerq((struct request *)entry);
199 list_destroy(q->entries);
200 pthread_cond_destroy(&q->cond);
201 pthread_mutex_unlock(&q->mutex);
202 pthread_mutex_destroy(&q->mutex);
206 void freebios(struct gqueue *q) {
209 pthread_mutex_lock(&q->mutex);
210 while ((bio = (BIO *)list_shift(q->entries)))
212 pthread_mutex_unlock(&q->mutex);
216 struct client *addclient(struct clsrvconf *conf, uint8_t lock) {
217 struct client *new = malloc(sizeof(struct client));
220 debug(DBG_ERR, "malloc failed");
225 pthread_mutex_lock(conf->lock);
226 if (!conf->clients) {
227 conf->clients = list_create();
228 if (!conf->clients) {
230 pthread_mutex_unlock(conf->lock);
231 debug(DBG_ERR, "malloc failed");
236 memset(new, 0, sizeof(struct client));
238 if (conf->pdef->addclient)
239 conf->pdef->addclient(new);
241 new->replyq = newqueue();
242 list_push(conf->clients, new);
244 pthread_mutex_unlock(conf->lock);
248 void removeclientrqs_sendrq_freeserver_lock(uint8_t wantlock) {
249 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
252 pthread_mutex_lock(&lock);
254 pthread_mutex_unlock(&lock);
257 void removeclientrqs(struct client *client) {
262 removeclientrqs_sendrq_freeserver_lock(1);
263 for (i = 0; i < MAX_REQUESTS; i++) {
268 rqout = rq->to->requests + rq->newid;
269 pthread_mutex_lock(rqout->lock);
270 if (rqout->rq == rq) /* still pointing to our request */
271 freerqoutdata(rqout);
272 pthread_mutex_unlock(rqout->lock);
276 removeclientrqs_sendrq_freeserver_lock(0);
279 void removelockedclient(struct client *client) {
280 struct clsrvconf *conf;
284 removeclientrqs(client);
285 removequeue(client->replyq);
286 list_removedata(conf->clients, client);
292 void removeclient(struct client *client) {
293 struct clsrvconf *conf;
299 pthread_mutex_lock(conf->lock);
300 removelockedclient(client);
301 pthread_mutex_unlock(conf->lock);
304 void freeserver(struct server *server, uint8_t destroymutex) {
305 struct rqout *rqout, *end;
310 removeclientrqs_sendrq_freeserver_lock(1);
311 if (server->requests) {
312 rqout = server->requests;
313 for (end = rqout + MAX_REQUESTS; rqout < end; rqout++) {
315 rqout->rq->to = NULL;
316 freerqoutdata(rqout);
317 pthread_mutex_destroy(rqout->lock);
320 free(server->requests);
323 freebios(server->rbios);
324 free(server->dynamiclookuparg);
326 SSL_free(server->ssl);
328 pthread_mutex_destroy(&server->lock);
329 pthread_cond_destroy(&server->newrq_cond);
330 pthread_mutex_destroy(&server->newrq_mutex);
332 removeclientrqs_sendrq_freeserver_lock(0);
336 int addserver(struct clsrvconf *conf) {
340 debug(DBG_ERR, "addserver: currently works with just one server per conf");
343 conf->servers = malloc(sizeof(struct server));
344 if (!conf->servers) {
345 debug(DBG_ERR, "malloc failed");
348 memset(conf->servers, 0, sizeof(struct server));
349 conf->servers->conf = conf;
352 if (conf->type == RAD_DTLS)
353 conf->servers->rbios = newqueue();
355 conf->pdef->setsrcres();
357 conf->servers->sock = -1;
358 if (conf->pdef->addserverextra)
359 conf->pdef->addserverextra(conf);
361 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct rqout));
362 if (!conf->servers->requests) {
363 debug(DBG_ERR, "malloc failed");
366 for (i = 0; i < MAX_REQUESTS; i++) {
367 conf->servers->requests[i].lock = malloc(sizeof(pthread_mutex_t));
368 if (!conf->servers->requests[i].lock) {
369 debug(DBG_ERR, "malloc failed");
372 if (pthread_mutex_init(conf->servers->requests[i].lock, NULL)) {
373 debug(DBG_ERR, "mutex init failed");
374 free(conf->servers->requests[i].lock);
375 conf->servers->requests[i].lock = NULL;
379 if (pthread_mutex_init(&conf->servers->lock, NULL)) {
380 debug(DBG_ERR, "mutex init failed");
383 conf->servers->newrq = 0;
384 if (pthread_mutex_init(&conf->servers->newrq_mutex, NULL)) {
385 debug(DBG_ERR, "mutex init failed");
386 pthread_mutex_destroy(&conf->servers->lock);
389 if (pthread_cond_init(&conf->servers->newrq_cond, NULL)) {
390 debug(DBG_ERR, "mutex init failed");
391 pthread_mutex_destroy(&conf->servers->newrq_mutex);
392 pthread_mutex_destroy(&conf->servers->lock);
399 freeserver(conf->servers, 0);
400 conf->servers = NULL;
404 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
406 if (ATTRTYPE(attrs) == type)
408 length -= ATTRLEN(attrs);
409 attrs += ATTRLEN(attrs);
414 struct request *newrqref(struct request *rq) {
420 void freerq(struct request *rq) {
423 debug(DBG_DBG, "freerq: called with refcount %d", rq->refcount);
426 if (rq->origusername)
427 free(rq->origusername);
433 radmsg_free(rq->msg);
437 void freerqoutdata(struct rqout *rqout) {
441 if (rqout->rq->buf) {
442 free(rqout->rq->buf);
443 rqout->rq->buf = NULL;
449 memset(&rqout->expiry, 0, sizeof(struct timeval));
452 void sendrq(struct request *rq) {
456 removeclientrqs_sendrq_freeserver_lock(1);
461 start = to->conf->statusserver ? 1 : 0;
462 pthread_mutex_lock(&to->newrq_mutex);
463 if (start && rq->msg->code == RAD_Status_Server) {
464 pthread_mutex_lock(to->requests[0].lock);
465 if (to->requests[0].rq) {
466 pthread_mutex_unlock(to->requests[0].lock);
467 debug(DBG_INFO, "sendrq: status server already in queue, dropping request");
474 /* might simplify if only try nextid, might be ok */
475 for (i = to->nextid; i < MAX_REQUESTS; i++) {
476 if (!to->requests[i].rq) {
477 pthread_mutex_lock(to->requests[i].lock);
478 if (!to->requests[i].rq)
480 pthread_mutex_unlock(to->requests[i].lock);
483 if (i == MAX_REQUESTS) {
484 for (i = start; i < to->nextid; i++) {
485 if (!to->requests[i].rq) {
486 pthread_mutex_lock(to->requests[i].lock);
487 if (!to->requests[i].rq)
489 pthread_mutex_unlock(to->requests[i].lock);
492 if (i == to->nextid) {
493 debug(DBG_INFO, "sendrq: no room in queue, dropping request");
498 rq->newid = (uint8_t)i;
499 rq->msg->id = (uint8_t)i;
500 rq->buf = radmsg2buf(rq->msg, (uint8_t *)to->conf->secret);
502 pthread_mutex_unlock(to->requests[i].lock);
503 debug(DBG_ERR, "sendrq: radmsg2buf failed");
507 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->name);
508 to->requests[i].rq = rq;
509 pthread_mutex_unlock(to->requests[i].lock);
510 if (i >= start) /* i is not reserved for statusserver */
515 debug(DBG_DBG, "sendrq: signalling client writer");
516 pthread_cond_signal(&to->newrq_cond);
519 pthread_mutex_unlock(&to->newrq_mutex);
520 removeclientrqs_sendrq_freeserver_lock(0);
525 rmclientrq(rq, rq->msg->id);
527 pthread_mutex_unlock(&to->newrq_mutex);
528 removeclientrqs_sendrq_freeserver_lock(0);
531 void sendreply(struct request *rq) {
533 struct client *to = rq->from;
536 rq->replybuf = radmsg2buf(rq->msg, (uint8_t *)to->conf->secret);
537 radmsg_free(rq->msg);
541 debug(DBG_ERR, "sendreply: radmsg2buf failed");
545 pthread_mutex_lock(&to->replyq->mutex);
546 first = list_first(to->replyq->entries) == NULL;
548 if (!list_push(to->replyq->entries, rq)) {
549 pthread_mutex_unlock(&to->replyq->mutex);
551 debug(DBG_ERR, "sendreply: malloc failed");
556 debug(DBG_DBG, "signalling server writer");
557 pthread_cond_signal(&to->replyq->cond);
559 pthread_mutex_unlock(&to->replyq->mutex);
562 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
563 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
564 static unsigned char first = 1;
565 static EVP_MD_CTX mdctx;
566 unsigned char hash[EVP_MAX_MD_SIZE], *input;
568 uint8_t i, offset = 0, out[128];
570 pthread_mutex_lock(&lock);
572 EVP_MD_CTX_init(&mdctx);
578 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
579 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
580 !EVP_DigestUpdate(&mdctx, input, 16) ||
581 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
583 pthread_mutex_unlock(&lock);
586 for (i = 0; i < 16; i++)
587 out[offset + i] = hash[i] ^ in[offset + i];
588 input = out + offset - 16;
593 memcpy(in, out, len);
594 pthread_mutex_unlock(&lock);
598 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
599 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
600 static unsigned char first = 1;
601 static EVP_MD_CTX mdctx;
602 unsigned char hash[EVP_MAX_MD_SIZE], *input;
604 uint8_t i, offset = 0, out[128];
606 pthread_mutex_lock(&lock);
608 EVP_MD_CTX_init(&mdctx);
614 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
615 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
616 !EVP_DigestUpdate(&mdctx, input, 16) ||
617 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
619 pthread_mutex_unlock(&lock);
622 for (i = 0; i < 16; i++)
623 out[offset + i] = hash[i] ^ in[offset + i];
629 memcpy(in, out, len);
630 pthread_mutex_unlock(&lock);
634 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
635 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
636 static unsigned char first = 1;
637 static EVP_MD_CTX mdctx;
638 unsigned char hash[EVP_MAX_MD_SIZE];
642 pthread_mutex_lock(&lock);
644 EVP_MD_CTX_init(&mdctx);
649 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
650 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
651 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
654 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
655 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
656 !EVP_DigestUpdate(&mdctx, auth, 16) ||
657 !EVP_DigestUpdate(&mdctx, salt, 2) ||
658 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
659 pthread_mutex_unlock(&lock);
664 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
667 for (i = 0; i < 16; i++)
670 for (offset = 16; offset < len; offset += 16) {
672 printf("text + offset - 16 c(%d): ", offset / 16);
673 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
675 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
676 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
677 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
678 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
680 pthread_mutex_unlock(&lock);
684 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
687 for (i = 0; i < 16; i++)
688 text[offset + i] ^= hash[i];
692 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
695 pthread_mutex_unlock(&lock);
699 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
700 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
701 static unsigned char first = 1;
702 static EVP_MD_CTX mdctx;
703 unsigned char hash[EVP_MAX_MD_SIZE];
708 pthread_mutex_lock(&lock);
710 EVP_MD_CTX_init(&mdctx);
715 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
716 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
717 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
720 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
721 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
722 !EVP_DigestUpdate(&mdctx, auth, 16) ||
723 !EVP_DigestUpdate(&mdctx, salt, 2) ||
724 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
725 pthread_mutex_unlock(&lock);
730 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
733 for (i = 0; i < 16; i++)
734 plain[i] = text[i] ^ hash[i];
736 for (offset = 16; offset < len; offset += 16) {
738 printf("text + offset - 16 c(%d): ", offset / 16);
739 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
741 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
742 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
743 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
744 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
746 pthread_mutex_unlock(&lock);
750 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
753 for (i = 0; i < 16; i++)
754 plain[offset + i] = text[offset + i] ^ hash[i];
757 memcpy(text, plain, len);
759 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
762 pthread_mutex_unlock(&lock);
766 struct realm *newrealmref(struct realm *r) {
772 /* returns with lock on realm */
773 struct realm *id2realm(struct list *realmlist, char *id) {
774 struct list_node *entry;
775 struct realm *realm, *subrealm;
777 /* need to do locking for subrealms and check subrealm timers */
778 for (entry = list_first(realmlist); entry; entry = list_next(entry)) {
779 realm = (struct realm *)entry->data;
780 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
781 pthread_mutex_lock(&realm->mutex);
782 if (realm->subrealms) {
783 subrealm = id2realm(realm->subrealms, id);
785 pthread_mutex_unlock(&realm->mutex);
789 return newrealmref(realm);
795 int hasdynamicserver(struct list *srvconfs) {
796 struct list_node *entry;
798 for (entry = list_first(srvconfs); entry; entry = list_next(entry))
799 if (((struct clsrvconf *)entry->data)->dynamiclookupcommand)
804 /* helper function, only used by removeserversubrealms() */
805 void _internal_removeserversubrealms(struct list *realmlist, struct clsrvconf *srv) {
806 struct list_node *entry, *entry2;
809 for (entry = list_first(realmlist); entry;) {
810 realm = newrealmref((struct realm *)entry->data);
811 pthread_mutex_lock(&realm->mutex);
812 entry = list_next(entry);
814 if (realm->srvconfs) {
815 for (entry2 = list_first(realm->srvconfs); entry2; entry2 = list_next(entry2))
816 if (entry2->data == srv)
818 list_removedata(realm->srvconfs, srv);
820 if (realm->accsrvconfs) {
821 for (entry2 = list_first(realm->accsrvconfs); entry2; entry2 = list_next(entry2))
822 if (entry2->data == srv)
824 list_removedata(realm->accsrvconfs, srv);
827 /* remove subrealm if no dynamic servers left */
828 if (!hasdynamicserver(realm->srvconfs) && !hasdynamicserver(realm->accsrvconfs)) {
829 while (list_shift(realm->srvconfs))
831 list_destroy(realm->srvconfs);
832 realm->srvconfs = NULL;
833 while (list_shift(realm->accsrvconfs))
835 list_destroy(realm->accsrvconfs);
836 realm->accsrvconfs = NULL;
837 list_removedata(realmlist, realm);
839 pthread_mutex_unlock(&realm->mutex);
844 void removeserversubrealms(struct list *realmlist, struct clsrvconf *srv) {
845 struct list_node *entry;
848 for (entry = list_first(realmlist); entry; entry = list_next(entry)) {
849 realm = (struct realm *)entry->data;
850 pthread_mutex_lock(&realm->mutex);
851 if (realm->subrealms) {
852 _internal_removeserversubrealms(realm->subrealms, srv);
853 if (!list_first(realm->subrealms)) {
854 list_destroy(realm->subrealms);
855 realm->subrealms = NULL;
858 pthread_mutex_unlock(&realm->mutex);
862 int attrvalidate(unsigned char *attrs, int length) {
864 if (ATTRLEN(attrs) < 2) {
865 debug(DBG_INFO, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
868 length -= ATTRLEN(attrs);
870 debug(DBG_INFO, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
873 attrs += ATTRLEN(attrs);
876 debug(DBG_INFO, "attrvalidate: malformed packet? remaining byte after last attribute");
880 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
881 if (len < 16 || len > 128 || len % 16) {
882 debug(DBG_WARN, "pwdrecrypt: invalid password length");
886 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
887 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
891 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
893 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
894 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
900 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
903 if (!msmppdecrypt(msmpp + 2, len - 2, (uint8_t *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
904 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
907 if (!msmppencrypt(msmpp + 2, len - 2, (uint8_t *)newsecret, strlen(newsecret), newauth, msmpp)) {
908 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
914 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
915 char *oldsecret, char *newsecret) {
918 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
919 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
920 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->rqauth))
926 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint32_t subattr) {
930 for (; attrs[0]; attrs += 2)
931 if (attrs[0] == vendor && attrs[1] == subattr)
936 /* returns 1 if entire element is to be removed, else 0 */
937 int dovendorrewriterm(struct tlv *attr, uint32_t *removevendorattrs) {
938 uint8_t alen, sublen;
942 if (!removevendorattrs)
945 memcpy(&vendor, attr->v, 4);
946 vendor = ntohl(vendor);
947 while (*removevendorattrs && *removevendorattrs != vendor)
948 removevendorattrs += 2;
949 if (!*removevendorattrs)
952 if (findvendorsubattr(removevendorattrs, vendor, 256))
953 return 1; /* remove entire vendor attribute */
955 sublen = attr->l - 4;
956 subattrs = attr->v + 4;
958 if (!attrvalidate(subattrs, sublen)) {
959 debug(DBG_INFO, "dovendorrewrite: vendor attribute validation failed, no rewrite");
964 alen = ATTRLEN(subattrs);
966 if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) {
967 memmove(subattrs, subattrs + alen, sublen);
975 void dorewriterm(struct radmsg *msg, uint8_t *rmattrs, uint32_t *rmvattrs) {
976 struct list_node *n, *p;
980 n = list_first(msg->attrs);
982 attr = (struct tlv *)n->data;
983 if ((rmattrs && strchr((char *)rmattrs, attr->t)) ||
984 (rmvattrs && attr->t == RAD_Attr_Vendor_Specific && dovendorrewriterm(attr, rmvattrs))) {
985 list_removedata(msg->attrs, attr);
987 n = p ? list_next(p) : list_first(msg->attrs);
994 int dorewriteadd(struct radmsg *msg, struct list *addattrs) {
998 for (n = list_first(addattrs); n; n = list_next(n)) {
999 a = copytlv((struct tlv *)n->data);
1002 if (!radmsg_add(msg, a)) {
1010 int resizeattr(struct tlv *attr, uint8_t newlen) {
1013 if (newlen != attr->l) {
1014 newv = realloc(attr->v, newlen);
1023 int dorewritemodattr(struct tlv *attr, struct modattr *modattr) {
1024 size_t nmatch = 10, reslen = 0, start = 0;
1025 regmatch_t pmatch[10], *pfield;
1029 in = stringcopy((char *)attr->v, attr->l);
1033 if (regexec(modattr->regex, in, nmatch, pmatch, 0)) {
1038 out = modattr->replacement;
1040 for (i = start; out[i]; i++) {
1041 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1042 pfield = &pmatch[out[i + 1] - '0'];
1043 if (pfield->rm_so >= 0) {
1044 reslen += i - start + pfield->rm_eo - pfield->rm_so;
1050 reslen += i - start;
1052 debug(DBG_INFO, "rewritten attribute length would be %d, max possible is 253, discarding message", reslen);
1057 if (!resizeattr(attr, reslen)) {
1064 for (i = start; out[i]; i++) {
1065 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1066 pfield = &pmatch[out[i + 1] - '0'];
1067 if (pfield->rm_so >= 0) {
1068 memcpy(attr->v + reslen, out + start, i - start);
1069 reslen += i - start;
1070 memcpy(attr->v + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1071 reslen += pfield->rm_eo - pfield->rm_so;
1078 memcpy(attr->v + reslen, out + start, i - start);
1082 int dorewritemod(struct radmsg *msg, struct list *modattrs) {
1083 struct list_node *n, *m;
1085 for (n = list_first(msg->attrs); n; n = list_next(n))
1086 for (m = list_first(modattrs); m; m = list_next(m))
1087 if (((struct tlv *)n->data)->t == ((struct modattr *)m->data)->t &&
1088 !dorewritemodattr((struct tlv *)n->data, (struct modattr *)m->data))
1093 int dorewrite(struct radmsg *msg, struct rewrite *rewrite) {
1096 if (rewrite->removeattrs || rewrite->removevendorattrs)
1097 dorewriterm(msg, rewrite->removeattrs, rewrite->removevendorattrs);
1098 if (rewrite->addattrs && !dorewriteadd(msg, rewrite->addattrs))
1100 if (rewrite->modattrs && !dorewritemod(msg, rewrite->modattrs))
1105 int rewriteusername(struct request *rq, struct tlv *attr) {
1106 char *orig = (char *)tlv2str(attr);
1107 if (!dorewritemodattr(attr, rq->from->conf->rewriteusername)) {
1111 if (strlen(orig) != attr->l || memcmp(orig, attr->v, attr->l))
1112 rq->origusername = (char *)orig;
1118 int addvendorattr(struct radmsg *msg, uint32_t vendor, struct tlv *attr) {
1125 vendor = htonl(vendor);
1126 memcpy(v, &vendor, 4);
1127 tlv2buf(v + 4, attr);
1129 vattr = maketlv(RAD_Attr_Vendor_Specific, l, v);
1130 if (vattr && radmsg_add(msg, vattr))
1137 void addttlattr(struct radmsg *msg, uint32_t *attrtype, uint8_t addttl) {
1144 if (attrtype[1] == 256) { /* not vendor */
1145 attr = maketlv(attrtype[0], 4, ttl);
1146 if (attr && !radmsg_add(msg, attr))
1149 attr = maketlv(attrtype[1], 4, ttl);
1151 addvendorattr(msg, attrtype[0], attr);
1157 int decttl(uint8_t l, uint8_t *v) {
1164 while (i >= 0 && !v[i])
1168 for (i--; i >= 0 && !v[i]; i--);
1177 /* returns -1 if no ttl, 0 if exceeded, 1 if ok */
1178 int checkttl(struct radmsg *msg, uint32_t *attrtype) {
1179 uint8_t alen, *subattrs;
1181 struct list_node *node;
1185 if (attrtype[1] == 256) { /* not vendor */
1186 attr = radmsg_gettype(msg, attrtype[0]);
1188 return decttl(attr->l, attr->v);
1190 for (node = list_first(msg->attrs); node; node = list_next(node)) {
1191 attr = (struct tlv *)node->data;
1192 if (attr->t != RAD_Attr_Vendor_Specific || attr->l <= 4)
1194 memcpy(&vendor, attr->v, 4);
1195 if (ntohl(vendor) != attrtype[0])
1197 sublen = attr->l - 4;
1198 subattrs = attr->v + 4;
1199 if (!attrvalidate(subattrs, sublen))
1201 while (sublen > 1) {
1202 if (ATTRTYPE(subattrs) == attrtype[1])
1203 return decttl(ATTRVALLEN(subattrs), ATTRVAL(subattrs));
1204 alen = ATTRLEN(subattrs);
1212 const char *radmsgtype2string(uint8_t code) {
1213 static const char *rad_msg_names[] = {
1214 "", "Access-Request", "Access-Accept", "Access-Reject",
1215 "Accounting-Request", "Accounting-Response", "", "",
1216 "", "", "", "Access-Challenge",
1217 "Status-Server", "Status-Client"
1219 return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown";
1222 void char2hex(char *h, unsigned char c) {
1223 static const char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7',
1224 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
1225 h[0] = hexdigits[c / 16];
1226 h[1] = hexdigits[c % 16];
1230 uint8_t *radattr2ascii(struct tlv *attr) {
1238 for (i = 0; i < attr->l; i++)
1239 if (attr->v[i] < 32 || attr->v[i] > 126)
1242 return (uint8_t *)stringcopy((char *)attr->v, attr->l);
1249 for (i = 0; i < attr->l; i++)
1250 if (attr->v[i] < 32 || attr->v[i] > 126) {
1252 char2hex((char *)d, attr->v[i]);
1260 void acclog(struct radmsg *msg, struct client *from) {
1264 attr = radmsg_gettype(msg, RAD_Attr_User_Name);
1266 debug(DBG_INFO, "acclog: accounting-request from client %s (%s) without username attribute", from->conf->name, addr2string(from->addr));
1269 username = radattr2ascii(attr);
1271 debug(DBG_INFO, "acclog: accounting-request from client %s (%s) with username: %s", from->conf->name, addr2string(from->addr), username);
1277 void respond(struct request *rq, uint8_t code, char *message) {
1281 msg = radmsg_init(code, rq->msg->id, rq->msg->auth);
1283 debug(DBG_ERR, "respond: malloc failed");
1286 if (message && *message) {
1287 attr = maketlv(RAD_Attr_Reply_Message, strlen(message), message);
1288 if (!attr || !radmsg_add(msg, attr)) {
1291 debug(DBG_ERR, "respond: malloc failed");
1296 radmsg_free(rq->msg);
1298 debug(DBG_DBG, "respond: sending %s to %s (%s)", radmsgtype2string(msg->code), rq->from->conf->name, addr2string(rq->from->addr));
1299 sendreply(newrqref(rq));
1302 struct clsrvconf *choosesrvconf(struct list *srvconfs) {
1303 struct list_node *entry;
1304 struct clsrvconf *server, *best = NULL, *first = NULL;
1306 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1307 server = (struct clsrvconf *)entry->data;
1308 if (!server->servers)
1312 if (!server->servers->connectionok && !server->servers->dynstartup)
1314 if (!server->servers->lostrqs)
1320 if (server->servers->lostrqs < best->servers->lostrqs)
1323 return best ? best : first;
1326 /* returns with lock on realm, protects from server changes while in use by radsrv/sendrq */
1327 struct server *findserver(struct realm **realm, struct tlv *username, uint8_t acc) {
1328 struct clsrvconf *srvconf;
1329 struct realm *subrealm;
1330 struct server *server = NULL;
1331 char *id = (char *)tlv2str(username);
1335 /* returns with lock on realm */
1336 *realm = id2realm(realms, id);
1339 debug(DBG_DBG, "found matching realm: %s", (*realm)->name);
1340 srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs);
1341 if (srvconf && !(*realm)->parent && !srvconf->servers && srvconf->dynamiclookupcommand) {
1342 subrealm = adddynamicrealmserver(*realm, id);
1344 pthread_mutex_lock(&subrealm->mutex);
1345 pthread_mutex_unlock(&(*realm)->mutex);
1348 srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs);
1352 server = srvconf->servers;
1360 struct request *newrequest() {
1363 rq = malloc(sizeof(struct request));
1365 debug(DBG_ERR, "newrequest: malloc failed");
1368 memset(rq, 0, sizeof(struct request));
1370 gettimeofday(&rq->created, NULL);
1374 int addclientrq(struct request *rq) {
1378 r = rq->from->rqs[rq->rqid];
1380 if (rq->udpport == r->udpport && !memcmp(rq->rqauth, r->rqauth, 16)) {
1381 gettimeofday(&now, NULL);
1382 if (now.tv_sec - r->created.tv_sec < r->from->conf->dupinterval) {
1384 debug(DBG_INFO, "addclientrq: already sent reply to request with id %d from %s, resending", rq->rqid, addr2string(r->from->addr));
1385 sendreply(newrqref(r));
1387 debug(DBG_INFO, "addclientrq: already got request with id %d from %s, ignoring", rq->rqid, addr2string(r->from->addr));
1393 rq->from->rqs[rq->rqid] = newrqref(rq);
1397 void rmclientrq(struct request *rq, uint8_t id) {
1400 r = rq->from->rqs[id];
1403 rq->from->rqs[id] = NULL;
1407 /* returns 0 if validation/authentication fails, else 1 */
1408 int radsrv(struct request *rq) {
1409 struct radmsg *msg = NULL;
1411 uint8_t *userascii = NULL;
1412 struct realm *realm = NULL;
1413 struct server *to = NULL;
1414 struct client *from = rq->from;
1417 msg = buf2radmsg(rq->buf, (uint8_t *)from->conf->secret, NULL);
1422 debug(DBG_INFO, "radsrv: message validation failed, ignoring packet");
1429 memcpy(rq->rqauth, msg->auth, 16);
1431 debug(DBG_DBG, "radsrv: code %d, id %d", msg->code, msg->id);
1432 if (msg->code != RAD_Access_Request && msg->code != RAD_Status_Server && msg->code != RAD_Accounting_Request) {
1433 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1437 if (!addclientrq(rq))
1440 if (msg->code == RAD_Status_Server) {
1441 respond(rq, RAD_Access_Accept, NULL);
1445 /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */
1447 if (from->conf->rewritein && !dorewrite(msg, from->conf->rewritein))
1450 ttlres = checkttl(msg, options.ttlattrtype);
1452 debug(DBG_INFO, "radsrv: ignoring request from client %s (%s), ttl exceeded", from->conf->name, addr2string(from->addr));
1456 attr = radmsg_gettype(msg, RAD_Attr_User_Name);
1458 if (msg->code == RAD_Accounting_Request) {
1460 respond(rq, RAD_Accounting_Response, NULL);
1462 debug(DBG_INFO, "radsrv: ignoring access request, no username attribute");
1466 if (from->conf->rewriteusername && !rewriteusername(rq, attr)) {
1467 debug(DBG_WARN, "radsrv: username malloc failed, ignoring request");
1471 userascii = radattr2ascii(attr);
1474 debug(DBG_DBG, "%s with username: %s", radmsgtype2string(msg->code), userascii);
1476 /* will return with lock on the realm */
1477 to = findserver(&realm, attr, msg->code == RAD_Accounting_Request);
1479 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1484 if (realm->message && msg->code == RAD_Access_Request) {
1485 debug(DBG_INFO, "radsrv: sending reject to %s (%s) for %s", from->conf->name, addr2string(from->addr), userascii);
1486 respond(rq, RAD_Access_Reject, realm->message);
1487 } else if (realm->accresp && msg->code == RAD_Accounting_Request) {
1489 respond(rq, RAD_Accounting_Response, NULL);
1494 if (options.loopprevention && !strcmp(from->conf->name, to->conf->name)) {
1495 debug(DBG_INFO, "radsrv: Loop prevented, not forwarding request from client %s (%s) to server %s, discarding",
1496 from->conf->name, addr2string(from->addr), to->conf->name);
1500 if (msg->code == RAD_Accounting_Request)
1501 memset(msg->auth, 0, 16);
1502 else if (!RAND_bytes(msg->auth, 16)) {
1503 debug(DBG_WARN, "radsrv: failed to generate random auth");
1508 printfchars(NULL, "auth", "%02x ", auth, 16);
1511 attr = radmsg_gettype(msg, RAD_Attr_User_Password);
1513 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", attr->l);
1514 if (!pwdrecrypt(attr->v, attr->l, from->conf->secret, to->conf->secret, rq->rqauth, msg->auth))
1518 attr = radmsg_gettype(msg, RAD_Attr_Tunnel_Password);
1520 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", attr->l);
1521 if (!pwdrecrypt(attr->v, attr->l, from->conf->secret, to->conf->secret, rq->rqauth, msg->auth))
1525 if (to->conf->rewriteout && !dorewrite(msg, to->conf->rewriteout))
1528 if (ttlres == -1 && (options.addttl || to->conf->addttl))
1529 addttlattr(msg, options.ttlattrtype, to->conf->addttl ? to->conf->addttl : options.addttl);
1534 pthread_mutex_unlock(&realm->mutex);
1539 rmclientrq(rq, msg->id);
1544 pthread_mutex_unlock(&realm->mutex);
1550 void replyh(struct server *server, unsigned char *buf) {
1551 struct client *from;
1552 struct rqout *rqout;
1554 unsigned char *subattrs;
1555 uint8_t *username, *stationid, *replymsg;
1556 struct radmsg *msg = NULL;
1558 struct list_node *node;
1560 server->connectionok = 1;
1561 server->lostrqs = 0;
1563 rqout = server->requests + buf[1];
1564 pthread_mutex_lock(rqout->lock);
1565 if (!rqout->tries) {
1568 debug(DBG_INFO, "replyh: no outstanding request with this id, ignoring reply");
1572 msg = buf2radmsg(buf, (uint8_t *)server->conf->secret, rqout->rq->msg->auth);
1576 debug(DBG_INFO, "replyh: message validation failed, ignoring packet");
1579 if (msg->code != RAD_Access_Accept && msg->code != RAD_Access_Reject && msg->code != RAD_Access_Challenge
1580 && msg->code != RAD_Accounting_Response) {
1581 debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(msg->code));
1584 debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(msg->code), msg->id);
1586 gettimeofday(&server->lastrcv, NULL);
1588 if (rqout->rq->msg->code == RAD_Status_Server) {
1589 freerqoutdata(rqout);
1590 debug(DBG_DBG, "replyh: got status server response from %s", server->conf->name);
1594 gettimeofday(&server->lastreply, NULL);
1595 from = rqout->rq->from;
1597 if (server->conf->rewritein && !dorewrite(msg, from->conf->rewritein)) {
1598 debug(DBG_INFO, "replyh: rewritein failed");
1602 ttlres = checkttl(msg, options.ttlattrtype);
1604 debug(DBG_INFO, "replyh: ignoring reply from server %s, ttl exceeded", server->conf->name);
1609 for (node = list_first(msg->attrs); node; node = list_next(node)) {
1610 attr = (struct tlv *)node->data;
1611 if (attr->t != RAD_Attr_Vendor_Specific)
1615 if (attr->v[0] != 0 || attr->v[1] != 0 || attr->v[2] != 1 || attr->v[3] != 55) /* 311 == MS */
1618 sublen = attr->l - 4;
1619 subattrs = attr->v + 4;
1620 if (!attrvalidate(subattrs, sublen) ||
1621 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
1622 rqout->rq, server->conf->secret, from->conf->secret) ||
1623 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
1624 rqout->rq, server->conf->secret, from->conf->secret))
1628 debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply");
1632 if (msg->code == RAD_Access_Accept || msg->code == RAD_Access_Reject || msg->code == RAD_Accounting_Response) {
1633 username = radattr2ascii(radmsg_gettype(rqout->rq->msg, RAD_Attr_User_Name));
1635 stationid = radattr2ascii(radmsg_gettype(rqout->rq->msg, RAD_Attr_Calling_Station_Id));
1636 replymsg = radattr2ascii(radmsg_gettype(msg, RAD_Attr_Reply_Message));
1639 debug(DBG_WARN, "%s for user %s stationid %s from %s (%s) to %s (%s)",
1640 radmsgtype2string(msg->code), username, stationid, server->conf->name, replymsg, from->conf->name, addr2string(from->addr));
1643 debug(DBG_WARN, "%s for user %s stationid %s from %s to %s (%s)",
1644 radmsgtype2string(msg->code), username, stationid, server->conf->name, from->conf->name, addr2string(from->addr));
1648 debug(DBG_WARN, "%s for user %s from %s (%s) to %s (%s)",
1649 radmsgtype2string(msg->code), username, server->conf->name, replymsg, from->conf->name, addr2string(from->addr));
1652 debug(DBG_WARN, "%s for user %s from %s to %s (%s)",
1653 radmsgtype2string(msg->code), username, server->conf->name, from->conf->name, addr2string(from->addr));
1659 msg->id = (char)rqout->rq->rqid;
1660 memcpy(msg->auth, rqout->rq->rqauth, 16);
1663 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
1666 if (rqout->rq->origusername && (attr = radmsg_gettype(msg, RAD_Attr_User_Name))) {
1667 if (!resizeattr(attr, strlen(rqout->rq->origusername))) {
1668 debug(DBG_WARN, "replyh: malloc failed, ignoring reply");
1671 memcpy(attr->v, rqout->rq->origusername, strlen(rqout->rq->origusername));
1674 if (from->conf->rewriteout && !dorewrite(msg, from->conf->rewriteout)) {
1675 debug(DBG_WARN, "replyh: rewriteout failed");
1679 if (ttlres == -1 && (options.addttl || from->conf->addttl))
1680 addttlattr(msg, options.ttlattrtype, from->conf->addttl ? from->conf->addttl : options.addttl);
1682 debug(msg->code == RAD_Access_Accept || msg->code == RAD_Access_Reject || msg->code == RAD_Accounting_Response ? DBG_WARN : DBG_INFO,
1683 "replyh: passing %s to client %s (%s)", radmsgtype2string(msg->code), from->conf->name, addr2string(from->addr));
1685 radmsg_free(rqout->rq->msg);
1686 rqout->rq->msg = msg;
1687 sendreply(newrqref(rqout->rq));
1688 freerqoutdata(rqout);
1689 pthread_mutex_unlock(rqout->lock);
1694 pthread_mutex_unlock(rqout->lock);
1698 struct request *createstatsrvrq() {
1705 rq->msg = radmsg_init(RAD_Status_Server, 0, NULL);
1708 attr = maketlv(RAD_Attr_Message_Authenticator, 16, NULL);
1711 if (!radmsg_add(rq->msg, attr)) {
1722 /* code for removing state not finished */
1723 void *clientwr(void *arg) {
1724 struct server *server = (struct server *)arg;
1725 struct rqout *rqout = NULL;
1726 pthread_t clientrdth;
1727 int i, dynconffail = 0;
1730 struct timeval now, laststatsrv;
1731 struct timespec timeout;
1732 struct request *statsrvrq;
1733 struct clsrvconf *conf;
1735 conf = server->conf;
1737 if (server->dynamiclookuparg && !dynamicconfig(server)) {
1739 server->dynstartup = 0;
1744 if (!resolvehostports(conf->hostports, conf->pdef->socktype)) {
1745 debug(DBG_WARN, "clientwr: resolve failed");
1746 server->dynstartup = 0;
1751 memset(&timeout, 0, sizeof(struct timespec));
1753 if (conf->statusserver) {
1754 gettimeofday(&server->lastrcv, NULL);
1755 gettimeofday(&laststatsrv, NULL);
1758 if (conf->pdef->connecter) {
1759 if (!conf->pdef->connecter(server, NULL, server->dynamiclookuparg ? 5 : 0, "clientwr")) {
1760 if (server->dynamiclookuparg) {
1761 server->dynstartup = 0;
1766 server->connectionok = 1;
1767 if (pthread_create(&clientrdth, NULL, conf->pdef->clientconnreader, (void *)server)) {
1768 debug(DBG_ERR, "clientwr: pthread_create failed");
1772 server->connectionok = 1;
1773 server->dynstartup = 0;
1776 pthread_mutex_lock(&server->newrq_mutex);
1777 if (!server->newrq) {
1778 gettimeofday(&now, NULL);
1779 /* random 0-7 seconds */
1780 RAND_bytes(&rnd, 1);
1782 if (conf->statusserver) {
1783 secs = server->lastrcv.tv_sec > laststatsrv.tv_sec ? server->lastrcv.tv_sec : laststatsrv.tv_sec;
1784 if (now.tv_sec - secs > STATUS_SERVER_PERIOD)
1786 if (!timeout.tv_sec || timeout.tv_sec > secs + STATUS_SERVER_PERIOD + rnd)
1787 timeout.tv_sec = secs + STATUS_SERVER_PERIOD + rnd;
1789 if (!timeout.tv_sec || timeout.tv_sec > now.tv_sec + STATUS_SERVER_PERIOD + rnd)
1790 timeout.tv_sec = now.tv_sec + STATUS_SERVER_PERIOD + rnd;
1793 if (timeout.tv_sec > now.tv_sec)
1794 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
1796 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
1799 if (server->newrq) {
1800 debug(DBG_DBG, "clientwr: got new request");
1805 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
1807 pthread_mutex_unlock(&server->newrq_mutex);
1809 for (i = 0; i < MAX_REQUESTS; i++) {
1810 if (server->clientrdgone) {
1811 pthread_join(clientrdth, NULL);
1815 for (; i < MAX_REQUESTS; i++) {
1816 rqout = server->requests + i;
1818 pthread_mutex_lock(rqout->lock);
1821 pthread_mutex_unlock(rqout->lock);
1825 if (i == MAX_REQUESTS)
1828 gettimeofday(&now, NULL);
1829 if (now.tv_sec < rqout->expiry.tv_sec) {
1830 if (!timeout.tv_sec || rqout->expiry.tv_sec < timeout.tv_sec)
1831 timeout.tv_sec = rqout->expiry.tv_sec;
1832 pthread_mutex_unlock(rqout->lock);
1836 if (rqout->tries == (*rqout->rq->buf == RAD_Status_Server ? 1 : conf->retrycount + 1)) {
1837 debug(DBG_DBG, "clientwr: removing expired packet from queue");
1838 if (conf->statusserver) {
1839 if (*rqout->rq->buf == RAD_Status_Server) {
1840 debug(DBG_WARN, "clientwr: no status server response, %s dead?", conf->name);
1841 if (server->lostrqs < 255)
1845 debug(DBG_WARN, "clientwr: no server response, %s dead?", conf->name);
1846 if (server->lostrqs < 255)
1849 freerqoutdata(rqout);
1850 pthread_mutex_unlock(rqout->lock);
1854 rqout->expiry.tv_sec = now.tv_sec + conf->retryinterval;
1855 if (!timeout.tv_sec || rqout->expiry.tv_sec < timeout.tv_sec)
1856 timeout.tv_sec = rqout->expiry.tv_sec;
1858 conf->pdef->clientradput(server, rqout->rq->buf);
1859 pthread_mutex_unlock(rqout->lock);
1861 if (conf->statusserver && server->connectionok) {
1862 secs = server->lastrcv.tv_sec > laststatsrv.tv_sec ? server->lastrcv.tv_sec : laststatsrv.tv_sec;
1863 gettimeofday(&now, NULL);
1864 if (now.tv_sec - secs > STATUS_SERVER_PERIOD) {
1866 statsrvrq = createstatsrvrq();
1868 statsrvrq->to = server;
1869 debug(DBG_DBG, "clientwr: sending status server to %s", conf->name);
1876 conf->servers = NULL;
1877 if (server->dynamiclookuparg) {
1878 removeserversubrealms(realms, conf);
1882 freeclsrvconf(conf);
1884 freeserver(server, 1);
1885 ERR_remove_state(0);
1889 void createlistener(uint8_t type, char *arg) {
1891 struct addrinfo *res;
1892 int s = -1, on = 1, *sp = NULL;
1893 struct hostportres *hp = newhostport(arg, protodefs[type]->portdefault, 0);
1895 if (!hp || !resolvehostport(hp, protodefs[type]->socktype, 1))
1896 debugx(1, DBG_ERR, "createlistener: failed to resolve %s", arg);
1898 for (res = hp->addrinfo; res; res = res->ai_next) {
1899 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
1901 debug(DBG_WARN, "createlistener: socket failed");
1904 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
1906 disable_DF_bit(s, res);
1909 if (res->ai_family == AF_INET6)
1910 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
1912 if (bind(s, res->ai_addr, res->ai_addrlen)) {
1913 debug(DBG_WARN, "createlistener: bind failed");
1919 sp = malloc(sizeof(int));
1921 debugx(1, DBG_ERR, "malloc failed");
1923 if (pthread_create(&th, NULL, protodefs[type]->listener, (void *)sp))
1924 debugx(1, DBG_ERR, "pthread_create failed");
1928 debugx(1, DBG_ERR, "createlistener: socket/bind failed");
1930 debug(DBG_WARN, "createlistener: listening for %s on %s:%s", protodefs[type]->name, hp->host ? hp->host : "*", hp->port);
1934 void createlisteners(uint8_t type) {
1938 args = protodefs[type]->getlistenerargs();
1940 for (i = 0; args[i]; i++)
1941 createlistener(type, args[i]);
1943 createlistener(type, NULL);
1951 ssl_locks = calloc(CRYPTO_num_locks(), sizeof(pthread_mutex_t));
1952 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
1953 for (i = 0; i < CRYPTO_num_locks(); i++) {
1954 ssl_lock_count[i] = 0;
1955 pthread_mutex_init(&ssl_locks[i], NULL);
1957 CRYPTO_set_id_callback(ssl_thread_id);
1958 CRYPTO_set_locking_callback(ssl_locking_callback);
1960 SSL_load_error_strings();
1963 while (!RAND_status()) {
1966 RAND_seed((unsigned char *)&t, sizeof(time_t));
1967 RAND_seed((unsigned char *)&pid, sizeof(pid));
1971 struct list *addsrvconfs(char *value, char **names) {
1972 struct list *conflist;
1974 struct list_node *entry;
1975 struct clsrvconf *conf = NULL;
1977 if (!names || !*names)
1980 conflist = list_create();
1982 debug(DBG_ERR, "malloc failed");
1986 for (n = 0; names[n]; n++) {
1987 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1988 conf = (struct clsrvconf *)entry->data;
1989 if (!strcasecmp(names[n], conf->name))
1993 debug(DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]);
1994 list_destroy(conflist);
1997 if (!list_push(conflist, conf)) {
1998 debug(DBG_ERR, "malloc failed");
1999 list_destroy(conflist);
2002 debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value);
2007 void freerealm(struct realm *realm) {
2010 debug(DBG_DBG, "freerealm: called with refcount %d", realm->refcount);
2011 if (--realm->refcount)
2015 free(realm->message);
2016 regfree(&realm->regex);
2017 pthread_mutex_destroy(&realm->mutex);
2018 /* if refcount == 0, all subrealms gone */
2019 list_destroy(realm->subrealms);
2020 /* if refcount == 0, all srvconfs gone */
2021 list_destroy(realm->srvconfs);
2022 /* if refcount == 0, all accsrvconfs gone */
2023 list_destroy(realm->accsrvconfs);
2024 freerealm(realm->parent);
2028 struct realm *addrealm(struct list *realmlist, char *value, char **servers, char **accservers, char *message, uint8_t accresp) {
2030 struct realm *realm;
2031 char *s, *regex = NULL;
2033 if (*value == '/') {
2034 /* regexp, remove optional trailing / if present */
2035 if (value[strlen(value) - 1] == '/')
2036 value[strlen(value) - 1] = '\0';
2038 /* not a regexp, let us make it one */
2039 if (*value == '*' && !value[1])
2040 regex = stringcopy(".*", 0);
2042 for (n = 0, s = value; *s;)
2045 regex = malloc(strlen(value) + n + 3);
2048 for (n = 1, s = value; *s; s++) {
2058 debug(DBG_ERR, "malloc failed");
2062 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2065 realm = malloc(sizeof(struct realm));
2067 debug(DBG_ERR, "malloc failed");
2070 memset(realm, 0, sizeof(struct realm));
2072 if (pthread_mutex_init(&realm->mutex, NULL)) {
2073 debug(DBG_ERR, "mutex init failed");
2079 realm->name = stringcopy(value, 0);
2081 debug(DBG_ERR, "malloc failed");
2084 if (message && strlen(message) > 253) {
2085 debug(DBG_ERR, "ReplyMessage can be at most 253 bytes");
2088 realm->message = message;
2089 realm->accresp = accresp;
2091 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_EXTENDED | REG_ICASE | REG_NOSUB)) {
2092 debug(DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2096 if (servers && *servers) {
2097 realm->srvconfs = addsrvconfs(value, servers);
2098 if (!realm->srvconfs)
2102 if (accservers && *accservers) {
2103 realm->accsrvconfs = addsrvconfs(value, accservers);
2104 if (!realm->accsrvconfs)
2108 if (!list_push(realmlist, realm)) {
2109 debug(DBG_ERR, "malloc failed");
2110 pthread_mutex_destroy(&realm->mutex);
2114 debug(DBG_DBG, "addrealm: added realm %s", value);
2118 while (list_shift(realm->srvconfs));
2119 while (list_shift(realm->accsrvconfs));
2126 for (n = 0; servers[n]; n++)
2128 freegconfmstr(servers);
2132 for (n = 0; accservers[n]; n++)
2134 freegconfmstr(accservers);
2136 return newrealmref(realm);
2139 struct list *createsubrealmservers(struct realm *realm, struct list *srvconfs) {
2140 struct list_node *entry;
2141 struct clsrvconf *conf, *srvconf;
2142 struct list *subrealmservers = NULL;
2145 if (list_first(srvconfs)) {
2146 subrealmservers = list_create();
2147 if (!subrealmservers)
2151 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2152 conf = (struct clsrvconf *)entry->data;
2153 if (!conf->servers && conf->dynamiclookupcommand) {
2154 srvconf = malloc(sizeof(struct clsrvconf));
2156 debug(DBG_ERR, "malloc failed");
2160 if (addserver(srvconf)) {
2161 srvconf->servers->dynamiclookuparg = stringcopy(realm->name, 0);
2162 srvconf->servers->dynstartup = 1;
2163 if (pthread_create(&clientth, NULL, clientwr, (void *)(srvconf->servers))) {
2164 debug(DBG_ERR, "pthread_create failed");
2165 freeserver(srvconf->servers, 1);
2166 srvconf->servers = NULL;
2168 pthread_detach(clientth);
2172 if (conf->servers) {
2173 if (list_push(subrealmservers, conf))
2176 debug(DBG_ERR, "malloc failed");
2179 return subrealmservers;
2182 struct realm *adddynamicrealmserver(struct realm *realm, char *id) {
2183 struct realm *newrealm = NULL;
2184 char *realmname, *s;
2186 /* create dynamic for the realm (string after last @, exit if nothing after @ */
2187 realmname = strrchr(id, '@');
2193 for (s = realmname; *s; s++)
2194 if (*s != '.' && *s != '-' && !isalnum((int)*s))
2197 if (!realm->subrealms)
2198 realm->subrealms = list_create();
2199 if (!realm->subrealms)
2202 newrealm = addrealm(realm->subrealms, realmname, NULL, NULL, stringcopy(realm->message, 0), realm->accresp);
2204 list_destroy(realm->subrealms);
2205 realm->subrealms = NULL;
2209 newrealm->parent = newrealmref(realm);
2210 /* add server and accserver to newrealm */
2211 newrealm->srvconfs = createsubrealmservers(newrealm, realm->srvconfs);
2212 newrealm->accsrvconfs = createsubrealmservers(newrealm, realm->accsrvconfs);
2216 int dynamicconfig(struct server *server) {
2217 int ok, fd[2], status;
2219 struct clsrvconf *conf = server->conf;
2220 struct gconffile *cf = NULL;
2222 /* for now we only learn hostname/address */
2223 debug(DBG_DBG, "dynamicconfig: need dynamic server config for %s", server->dynamiclookuparg);
2226 debug(DBG_ERR, "dynamicconfig: pipe error");
2231 debug(DBG_ERR, "dynamicconfig: fork error");
2235 } else if (pid == 0) {
2238 if (fd[1] != STDOUT_FILENO) {
2239 if (dup2(fd[1], STDOUT_FILENO) != STDOUT_FILENO)
2240 debugx(1, DBG_ERR, "dynamicconfig: dup2 error for command %s", conf->dynamiclookupcommand);
2243 if (execlp(conf->dynamiclookupcommand, conf->dynamiclookupcommand, server->dynamiclookuparg, NULL) < 0)
2244 debugx(1, DBG_ERR, "dynamicconfig: exec error for command %s", conf->dynamiclookupcommand);
2248 pushgconffile(&cf, fdopen(fd[0], "r"), conf->dynamiclookupcommand);
2249 ok = getgenericconfig(&cf, NULL,
2250 "Server", CONF_CBK, confserver_cb, (void *)conf,
2255 if (waitpid(pid, &status, 0) < 0) {
2256 debug(DBG_ERR, "dynamicconfig: wait error");
2261 debug(DBG_INFO, "dynamicconfig: command exited with status %d", WEXITSTATUS(status));
2269 debug(DBG_WARN, "dynamicconfig: failed to obtain dynamic server config");
2273 /* should accept both names and numeric values, only numeric right now */
2274 uint8_t attrname2val(char *attrname) {
2277 val = atoi(attrname);
2278 return val > 0 && val < 256 ? val : 0;
2281 /* should accept both names and numeric values, only numeric right now */
2282 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) {
2285 *vendor = atoi(attrname);
2286 s = strchr(attrname, ':');
2291 *type = atoi(s + 1);
2295 /* should accept both names and numeric values, only numeric right now */
2296 struct tlv *extractattr(char *nameval) {
2301 s = strchr(nameval, ':');
2302 name = atoi(nameval);
2303 if (!s || name < 1 || name > 255)
2305 len = strlen(s + 1);
2308 a = malloc(sizeof(struct tlv));
2311 a->v = (uint8_t *)stringcopy(s + 1, 0);
2321 /* should accept both names and numeric values, only numeric right now */
2322 struct modattr *extractmodattr(char *nameval) {
2327 if (!strncasecmp(nameval, "User-Name:/", 11)) {
2331 s = strchr(nameval, ':');
2332 name = atoi(nameval);
2333 if (!s || name < 1 || name > 255 || s[1] != '/')
2337 /* regexp, remove optional trailing / if present */
2338 if (s[strlen(s) - 1] == '/')
2339 s[strlen(s) - 1] = '\0';
2347 m = malloc(sizeof(struct modattr));
2349 debug(DBG_ERR, "malloc failed");
2354 m->replacement = stringcopy(t, 0);
2355 if (!m->replacement) {
2357 debug(DBG_ERR, "malloc failed");
2361 m->regex = malloc(sizeof(regex_t));
2363 free(m->replacement);
2365 debug(DBG_ERR, "malloc failed");
2369 if (regcomp(m->regex, s, REG_ICASE | REG_EXTENDED)) {
2371 free(m->replacement);
2373 debug(DBG_ERR, "failed to compile regular expression %s", s);
2380 struct rewrite *getrewrite(char *alt1, char *alt2) {
2383 if ((r = hash_read(rewriteconfs, alt1, strlen(alt1))))
2385 if ((r = hash_read(rewriteconfs, alt2, strlen(alt2))))
2390 void addrewrite(char *value, char **rmattrs, char **rmvattrs, char **addattrs, char **modattrs) {
2391 struct rewrite *rewrite = NULL;
2393 uint8_t *rma = NULL;
2394 uint32_t *p, *rmva = NULL;
2395 struct list *adda = NULL, *moda = NULL;
2400 for (n = 0; rmattrs[n]; n++);
2401 rma = calloc(n + 1, sizeof(uint8_t));
2403 debugx(1, DBG_ERR, "malloc failed");
2405 for (i = 0; i < n; i++)
2406 if (!(rma[i] = attrname2val(rmattrs[i])))
2407 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", rmattrs[i]);
2408 freegconfmstr(rmattrs);
2413 for (n = 0; rmvattrs[n]; n++);
2414 rmva = calloc(2 * n + 1, sizeof(uint32_t));
2416 debugx(1, DBG_ERR, "malloc failed");
2418 for (p = rmva, i = 0; i < n; i++, p += 2)
2419 if (!vattrname2val(rmvattrs[i], p, p + 1))
2420 debugx(1, DBG_ERR, "addrewrite: invalid vendor attribute %s", rmvattrs[i]);
2421 freegconfmstr(rmvattrs);
2426 adda = list_create();
2428 debugx(1, DBG_ERR, "malloc failed");
2429 for (i = 0; addattrs[i]; i++) {
2430 a = extractattr(addattrs[i]);
2432 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", addattrs[i]);
2433 if (!list_push(adda, a))
2434 debugx(1, DBG_ERR, "malloc failed");
2436 freegconfmstr(addattrs);
2440 moda = list_create();
2442 debugx(1, DBG_ERR, "malloc failed");
2443 for (i = 0; modattrs[i]; i++) {
2444 m = extractmodattr(modattrs[i]);
2446 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", modattrs[i]);
2447 if (!list_push(moda, m))
2448 debugx(1, DBG_ERR, "malloc failed");
2450 freegconfmstr(modattrs);
2453 if (rma || rmva || adda || moda) {
2454 rewrite = malloc(sizeof(struct rewrite));
2456 debugx(1, DBG_ERR, "malloc failed");
2457 rewrite->removeattrs = rma;
2458 rewrite->removevendorattrs = rmva;
2459 rewrite->addattrs = adda;
2460 rewrite->modattrs = moda;
2463 if (!hash_insert(rewriteconfs, value, strlen(value), rewrite))
2464 debugx(1, DBG_ERR, "malloc failed");
2465 debug(DBG_DBG, "addrewrite: added rewrite block %s", value);
2468 int setttlattr(struct options *opts, char *defaultattr) {
2469 char *ttlattr = opts->ttlattr ? opts->ttlattr : defaultattr;
2471 if (vattrname2val(ttlattr, opts->ttlattrtype, opts->ttlattrtype + 1) &&
2472 (opts->ttlattrtype[1] != 256 || opts->ttlattrtype[0] < 256))
2474 debug(DBG_ERR, "setttlattr: invalid TTLAttribute value %s", ttlattr);
2478 void freeclsrvconf(struct clsrvconf *conf) {
2481 freegconfmstr(conf->hostsrc);
2482 free(conf->portsrc);
2485 free(conf->matchcertattr);
2486 if (conf->certcnregex)
2487 regfree(conf->certcnregex);
2488 if (conf->certuriregex)
2489 regfree(conf->certuriregex);
2490 free(conf->confrewritein);
2491 free(conf->confrewriteout);
2492 if (conf->rewriteusername) {
2493 if (conf->rewriteusername->regex)
2494 regfree(conf->rewriteusername->regex);
2495 free(conf->rewriteusername->replacement);
2496 free(conf->rewriteusername);
2498 free(conf->dynamiclookupcommand);
2499 free(conf->rewritein);
2500 free(conf->rewriteout);
2501 if (conf->hostports)
2502 freehostports(conf->hostports);
2504 pthread_mutex_destroy(conf->lock);
2507 /* not touching ssl_ctx, clients and servers */
2511 int mergeconfstring(char **dst, char **src) {
2520 t = stringcopy(*dst, 0);
2522 debug(DBG_ERR, "malloc failed");
2530 char **mstringcopy(char **in) {
2537 for (n = 0; in[n]; n++);
2538 out = malloc((n + 1) * sizeof(char *));
2541 for (n = 0; in[n]; n++) {
2542 out[n] = stringcopy(in[n], 0);
2552 int mergeconfmstring(char ***dst, char ***src) {
2561 t = mstringcopy(*dst);
2563 debug(DBG_ERR, "malloc failed");
2571 /* assumes dst is a shallow copy */
2572 int mergesrvconf(struct clsrvconf *dst, struct clsrvconf *src) {
2573 if (!mergeconfstring(&dst->name, &src->name) ||
2574 !mergeconfmstring(&dst->hostsrc, &src->hostsrc) ||
2575 !mergeconfstring(&dst->portsrc, &src->portsrc) ||
2576 !mergeconfstring(&dst->secret, &src->secret) ||
2577 !mergeconfstring(&dst->tls, &src->tls) ||
2578 !mergeconfstring(&dst->matchcertattr, &src->matchcertattr) ||
2579 !mergeconfstring(&dst->confrewritein, &src->confrewritein) ||
2580 !mergeconfstring(&dst->confrewriteout, &src->confrewriteout) ||
2581 !mergeconfstring(&dst->dynamiclookupcommand, &src->dynamiclookupcommand))
2584 dst->pdef = src->pdef;
2585 dst->statusserver = src->statusserver;
2586 dst->certnamecheck = src->certnamecheck;
2587 if (src->retryinterval != 255)
2588 dst->retryinterval = src->retryinterval;
2589 if (src->retrycount != 255)
2590 dst->retrycount = src->retrycount;
2594 int confclient_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
2595 struct clsrvconf *conf;
2596 char *conftype = NULL, *rewriteinalias = NULL;
2597 long int dupinterval = LONG_MIN, addttl = LONG_MIN;
2599 debug(DBG_DBG, "confclient_cb called for %s", block);
2601 conf = malloc(sizeof(struct clsrvconf));
2603 debugx(1, DBG_ERR, "malloc failed");
2604 memset(conf, 0, sizeof(struct clsrvconf));
2605 conf->certnamecheck = 1;
2607 if (!getgenericconfig(cf, block,
2608 "type", CONF_STR, &conftype,
2609 "host", CONF_MSTR, &conf->hostsrc,
2610 "secret", CONF_STR, &conf->secret,
2611 #if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
2612 "tls", CONF_STR, &conf->tls,
2613 "matchcertificateattribute", CONF_STR, &conf->matchcertattr,
2614 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
2616 "DuplicateInterval", CONF_LINT, &dupinterval,
2617 "addTTL", CONF_LINT, &addttl,
2618 "rewrite", CONF_STR, &rewriteinalias,
2619 "rewriteIn", CONF_STR, &conf->confrewritein,
2620 "rewriteOut", CONF_STR, &conf->confrewriteout,
2621 "rewriteattribute", CONF_STR, &conf->confrewriteusername,
2624 debugx(1, DBG_ERR, "configuration error");
2626 conf->name = stringcopy(val, 0);
2627 if (conf->name && !conf->hostsrc) {
2628 conf->hostsrc = malloc(2 * sizeof(char *));
2629 if (conf->hostsrc) {
2630 conf->hostsrc[0] = stringcopy(val, 0);
2631 conf->hostsrc[1] = NULL;
2634 if (!conf->name || !conf->hostsrc || !conf->hostsrc[0])
2635 debugx(1, DBG_ERR, "malloc failed");
2638 debugx(1, DBG_ERR, "error in block %s, option type missing", block);
2639 conf->type = protoname2int(conftype);
2640 if (conf->type == 255)
2641 debugx(1, DBG_ERR, "error in block %s, unknown transport %s", block, conftype);
2643 conf->pdef = protodefs[conf->type];
2645 #if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
2646 if (conf->type == RAD_TLS || conf->type == RAD_DTLS) {
2647 conf->tlsconf = conf->tls ? tlsgettls(conf->tls, NULL) : tlsgettls("defaultclient", "default");
2649 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
2650 if (conf->matchcertattr && !addmatchcertattr(conf))
2651 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2655 if (dupinterval != LONG_MIN) {
2656 if (dupinterval < 0 || dupinterval > 255)
2657 debugx(1, DBG_ERR, "error in block %s, value of option DuplicateInterval is %d, must be 0-255", block, dupinterval);
2658 conf->dupinterval = (uint8_t)dupinterval;
2660 conf->dupinterval = conf->pdef->duplicateintervaldefault;
2662 if (addttl != LONG_MIN) {
2663 if (addttl < 1 || addttl > 255)
2664 debugx(1, DBG_ERR, "error in block %s, value of option addTTL is %d, must be 1-255", block, addttl);
2665 conf->addttl = (uint8_t)addttl;
2668 if (!conf->confrewritein)
2669 conf->confrewritein = rewriteinalias;
2671 free(rewriteinalias);
2672 conf->rewritein = conf->confrewritein ? getrewrite(conf->confrewritein, NULL) : getrewrite("defaultclient", "default");
2673 if (conf->confrewriteout)
2674 conf->rewriteout = getrewrite(conf->confrewriteout, NULL);
2676 if (conf->confrewriteusername) {
2677 conf->rewriteusername = extractmodattr(conf->confrewriteusername);
2678 if (!conf->rewriteusername)
2679 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
2682 if (!addhostport(&conf->hostports, conf->hostsrc, conf->pdef->portdefault, 1) ||
2683 !resolvehostports(conf->hostports, conf->pdef->socktype))
2684 debugx(1, DBG_ERR, "resolve failed, exiting");
2686 if (!conf->secret) {
2687 if (!conf->pdef->secretdefault)
2688 debugx(1, DBG_ERR, "error in block %s, secret must be specified for transport type %s", block, conf->pdef->name);
2689 conf->secret = stringcopy(conf->pdef->secretdefault, 0);
2691 debugx(1, DBG_ERR, "malloc failed");
2694 conf->lock = malloc(sizeof(pthread_mutex_t));
2696 debugx(1, DBG_ERR, "malloc failed");
2698 pthread_mutex_init(conf->lock, NULL);
2699 if (!list_push(clconfs, conf))
2700 debugx(1, DBG_ERR, "malloc failed");
2704 int compileserverconfig(struct clsrvconf *conf, const char *block) {
2705 #if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
2706 if (conf->type == RAD_TLS || conf->type == RAD_DTLS) {
2707 conf->tlsconf = conf->tls ? tlsgettls(conf->tls, NULL) : tlsgettls("defaultserver", "default");
2708 if (!conf->tlsconf) {
2709 debug(DBG_ERR, "error in block %s, no tls context defined", block);
2712 if (conf->matchcertattr && !addmatchcertattr(conf)) {
2713 debug(DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2719 if (!conf->portsrc) {
2720 conf->portsrc = stringcopy(conf->pdef->portdefault, 0);
2721 if (!conf->portsrc) {
2722 debug(DBG_ERR, "malloc failed");
2727 if (conf->retryinterval == 255)
2728 conf->retryinterval = conf->pdef->retryintervaldefault;
2729 if (conf->retrycount == 255)
2730 conf->retrycount = conf->pdef->retrycountdefault;
2732 conf->rewritein = conf->confrewritein ? getrewrite(conf->confrewritein, NULL) : getrewrite("defaultserver", "default");
2733 if (conf->confrewriteout)
2734 conf->rewriteout = getrewrite(conf->confrewriteout, NULL);
2736 if (!addhostport(&conf->hostports, conf->hostsrc, conf->portsrc, 0)) {
2737 debug(DBG_ERR, "error in block %s, failed to parse %s", block, conf->hostsrc);
2741 if (!conf->dynamiclookupcommand && !resolvehostports(conf->hostports, conf->pdef->socktype)) {
2742 debug(DBG_ERR, "resolve failed, exiting");
2748 int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
2749 struct clsrvconf *conf, *resconf;
2750 char *conftype = NULL, *rewriteinalias = NULL;
2751 long int retryinterval = LONG_MIN, retrycount = LONG_MIN, addttl = LONG_MIN;
2753 debug(DBG_DBG, "confserver_cb called for %s", block);
2755 conf = malloc(sizeof(struct clsrvconf));
2757 debug(DBG_ERR, "malloc failed");
2760 memset(conf, 0, sizeof(struct clsrvconf));
2761 resconf = (struct clsrvconf *)arg;
2763 conf->statusserver = resconf->statusserver;
2764 conf->certnamecheck = resconf->certnamecheck;
2766 conf->certnamecheck = 1;
2768 if (!getgenericconfig(cf, block,
2769 "type", CONF_STR, &conftype,
2770 "host", CONF_MSTR, &conf->hostsrc,
2771 "port", CONF_STR, &conf->portsrc,
2772 "secret", CONF_STR, &conf->secret,
2773 #if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
2774 "tls", CONF_STR, &conf->tls,
2775 "MatchCertificateAttribute", CONF_STR, &conf->matchcertattr,
2776 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
2778 "addTTL", CONF_LINT, &addttl,
2779 "rewrite", CONF_STR, &rewriteinalias,
2780 "rewriteIn", CONF_STR, &conf->confrewritein,
2781 "rewriteOut", CONF_STR, &conf->confrewriteout,
2782 "StatusServer", CONF_BLN, &conf->statusserver,
2783 "RetryInterval", CONF_LINT, &retryinterval,
2784 "RetryCount", CONF_LINT, &retrycount,
2785 "DynamicLookupCommand", CONF_STR, &conf->dynamiclookupcommand,
2788 debug(DBG_ERR, "configuration error");
2792 conf->name = stringcopy(val, 0);
2793 if (conf->name && !conf->hostsrc) {
2794 conf->hostsrc = malloc(2 * sizeof(char *));
2795 if (conf->hostsrc) {
2796 conf->hostsrc[0] = stringcopy(val, 0);
2797 conf->hostsrc[1] = NULL;
2800 if (!conf->name || !conf->hostsrc || !conf->hostsrc[0]) {
2801 debug(DBG_ERR, "malloc failed");
2806 debug(DBG_ERR, "error in block %s, option type missing", block);
2809 conf->type = protoname2int(conftype);
2810 if (conf->type == 255) {
2811 debug(DBG_ERR, "error in block %s, unknown transport %s", block, conftype);
2817 conf->pdef = protodefs[conf->type];
2819 if (!conf->confrewritein)
2820 conf->confrewritein = rewriteinalias;
2822 free(rewriteinalias);
2823 rewriteinalias = NULL;
2825 if (retryinterval != LONG_MIN) {
2826 if (retryinterval < 1 || retryinterval > conf->pdef->retryintervalmax) {
2827 debug(DBG_ERR, "error in block %s, value of option RetryInterval is %d, must be 1-%d", block, retryinterval, conf->pdef->retryintervalmax);
2830 conf->retryinterval = (uint8_t)retryinterval;
2832 conf->retryinterval = 255;
2834 if (retrycount != LONG_MIN) {
2835 if (retrycount < 0 || retrycount > conf->pdef->retrycountmax) {
2836 debug(DBG_ERR, "error in block %s, value of option RetryCount is %d, must be 0-%d", block, retrycount, conf->pdef->retrycountmax);
2839 conf->retrycount = (uint8_t)retrycount;
2841 conf->retrycount = 255;
2843 if (addttl != LONG_MIN) {
2844 if (addttl < 1 || addttl > 255) {
2845 debug(DBG_ERR, "error in block %s, value of option addTTL is %d, must be 1-255", block, addttl);
2848 conf->addttl = (uint8_t)addttl;
2852 if (!mergesrvconf(resconf, conf))
2856 if (conf->dynamiclookupcommand) {
2857 free(conf->dynamiclookupcommand);
2858 conf->dynamiclookupcommand = NULL;
2862 if (resconf || !conf->dynamiclookupcommand) {
2863 if (!compileserverconfig(conf, block))
2867 if (!conf->secret) {
2868 if (!conf->pdef->secretdefault) {
2869 debug(DBG_ERR, "error in block %s, secret must be specified for transport type %s", block, conf->pdef->name);
2872 conf->secret = stringcopy(conf->pdef->secretdefault, 0);
2873 if (!conf->secret) {
2874 debug(DBG_ERR, "malloc failed");
2882 if (!list_push(srvconfs, conf)) {
2883 debug(DBG_ERR, "malloc failed");
2890 free(rewriteinalias);
2891 freeclsrvconf(conf);
2895 int confrealm_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
2896 char **servers = NULL, **accservers = NULL, *msg = NULL;
2897 uint8_t accresp = 0;
2899 debug(DBG_DBG, "confrealm_cb called for %s", block);
2901 if (!getgenericconfig(cf, block,
2902 "server", CONF_MSTR, &servers,
2903 "accountingServer", CONF_MSTR, &accservers,
2904 "ReplyMessage", CONF_STR, &msg,
2905 "AccountingResponse", CONF_BLN, &accresp,
2908 debugx(1, DBG_ERR, "configuration error");
2910 addrealm(realms, val, servers, accservers, msg, accresp);
2914 int confrewrite_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
2915 char **rmattrs = NULL, **rmvattrs = NULL, **addattrs = NULL, **modattrs = NULL;
2917 debug(DBG_DBG, "confrewrite_cb called for %s", block);
2919 if (!getgenericconfig(cf, block,
2920 "removeAttribute", CONF_MSTR, &rmattrs,
2921 "removeVendorAttribute", CONF_MSTR, &rmvattrs,
2922 "addAttribute", CONF_MSTR, &addattrs,
2923 "modifyAttribute", CONF_MSTR, &modattrs,
2926 debugx(1, DBG_ERR, "configuration error");
2927 addrewrite(val, rmattrs, rmvattrs, addattrs, modattrs);
2931 int setprotoopts(uint8_t type, char **listenargs, char *sourcearg) {
2932 struct commonprotoopts *protoopts;
2934 protoopts = malloc(sizeof(struct commonprotoopts));
2937 memset(protoopts, 0, sizeof(struct commonprotoopts));
2938 protoopts->listenargs = listenargs;
2939 protoopts->sourcearg = sourcearg;
2940 protodefs[type]->setprotoopts(protoopts);
2944 void getmainconfig(const char *configfile) {
2945 long int addttl = LONG_MIN, loglevel = LONG_MIN;
2946 struct gconffile *cfs;
2947 char **listenargs[RAD_PROTOCOUNT];
2948 char *sourcearg[RAD_PROTOCOUNT];
2951 cfs = openconfigfile(configfile);
2952 memset(&options, 0, sizeof(options));
2953 memset(&listenargs, 0, sizeof(listenargs));
2954 memset(&sourcearg, 0, sizeof(sourcearg));
2956 clconfs = list_create();
2958 debugx(1, DBG_ERR, "malloc failed");
2960 srvconfs = list_create();
2962 debugx(1, DBG_ERR, "malloc failed");
2964 realms = list_create();
2966 debugx(1, DBG_ERR, "malloc failed");
2968 rewriteconfs = hash_create();
2970 debugx(1, DBG_ERR, "malloc failed");
2972 if (!getgenericconfig(&cfs, NULL,
2974 "ListenUDP", CONF_MSTR, &listenargs[RAD_UDP],
2975 "SourceUDP", CONF_STR, &sourcearg[RAD_UDP],
2978 "ListenTCP", CONF_MSTR, &listenargs[RAD_TCP],
2979 "SourceTCP", CONF_STR, &sourcearg[RAD_TCP],
2982 "ListenTLS", CONF_MSTR, &listenargs[RAD_TLS],
2983 "SourceTLS", CONF_STR, &sourcearg[RAD_TLS],
2986 "ListenDTLS", CONF_MSTR, &listenargs[RAD_DTLS],
2987 "SourceDTLS", CONF_STR, &sourcearg[RAD_DTLS],
2989 "TTLAttribute", CONF_STR, &options.ttlattr,
2990 "addTTL", CONF_LINT, &addttl,
2991 "LogLevel", CONF_LINT, &loglevel,
2992 "LogDestination", CONF_STR, &options.logdestination,
2993 "LoopPrevention", CONF_BLN, &options.loopprevention,
2994 "Client", CONF_CBK, confclient_cb, NULL,
2995 "Server", CONF_CBK, confserver_cb, NULL,
2996 "Realm", CONF_CBK, confrealm_cb, NULL,
2997 #if defined(RADPROT_TLS) || defined(RADPROT_DTLS)
2998 "TLS", CONF_CBK, conftls_cb, NULL,
3000 "Rewrite", CONF_CBK, confrewrite_cb, NULL,
3003 debugx(1, DBG_ERR, "configuration error");
3005 if (loglevel != LONG_MIN) {
3006 if (loglevel < 1 || loglevel > 4)
3007 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %d, must be 1, 2, 3 or 4", configfile, loglevel);
3008 options.loglevel = (uint8_t)loglevel;
3010 if (addttl != LONG_MIN) {
3011 if (addttl < 1 || addttl > 255)
3012 debugx(1, DBG_ERR, "error in %s, value of option addTTL is %d, must be 1-255", configfile, addttl);
3013 options.addttl = (uint8_t)addttl;
3015 if (!setttlattr(&options, DEFAULT_TTL_ATTR))
3016 debugx(1, DBG_ERR, "Failed to set TTLAttribute, exiting");
3018 for (i = 0; i < RAD_PROTOCOUNT; i++)
3019 if (listenargs[i] || sourcearg[i])
3020 setprotoopts(i, listenargs[i], sourcearg[i]);
3023 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile, char **pidfile) {
3026 while ((c = getopt(argc, argv, "c:d:i:fpv")) != -1) {
3029 *configfile = optarg;
3032 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
3033 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
3034 *loglevel = *optarg - '0';
3046 debug(DBG_ERR, "radsecproxy revision $Rev$");
3047 debug(DBG_ERR, "This binary was built with support for the following transports:");
3049 debug(DBG_ERR, " UDP");
3052 debug(DBG_ERR, " TCP");
3055 debug(DBG_ERR, " TLS");
3058 debug(DBG_ERR, " DTLS");
3065 if (!(argc - optind))
3069 debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -i pidfile ] [ -p ] [ -v ]", argv[0]);
3073 int daemon(int a, int b) {
3081 for (i = 0; i < 3; i++) {
3083 open("/dev/null", O_RDWR);
3089 void *sighandler(void *arg) {
3094 sigemptyset(&sigset);
3095 sigaddset(&sigset, SIGHUP);
3096 sigaddset(&sigset, SIGPIPE);
3097 sigwait(&sigset, &sig);
3100 /* completely ignoring this */
3103 debug(DBG_INFO, "sighandler: got SIGHUP");
3107 debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?");
3110 debug(DBG_WARN, "sighandler: ignoring signal %d", sig);
3115 int createpidfile(const char *pidfile) {
3117 FILE *f = fopen(pidfile, "w");
3119 r = fprintf(f, "%d\n", getpid());
3120 return f && !fclose(f) && r >= 0;
3123 int main(int argc, char **argv) {
3126 struct list_node *entry;
3127 uint8_t foreground = 0, pretend = 0, loglevel = 0;
3128 char *configfile = NULL, *pidfile = NULL;
3129 struct clsrvconf *srvconf;
3132 debug_init("radsecproxy");
3133 debug_set_level(DEBUG_LEVEL);
3135 for (i = 0; i < RAD_PROTOCOUNT; i++)
3136 protodefs[i] = protoinits[i](i);
3138 /* needed even if no TLS/DTLS transport */
3141 getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile, &pidfile);
3143 debug_set_level(loglevel);
3144 getmainconfig(configfile ? configfile : CONFIG_MAIN);
3146 options.loglevel = loglevel;
3147 else if (options.loglevel)
3148 debug_set_level(options.loglevel);
3150 debug_set_destination(options.logdestination ? options.logdestination : "x-syslog:///");
3151 free(options.logdestination);
3153 if (!list_first(clconfs))
3154 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
3155 if (!list_first(realms))
3156 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
3159 debugx(0, DBG_ERR, "All OK so far; exiting since only pretending");
3161 if (!foreground && (daemon(0, 0) < 0))
3162 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
3164 debug_timestamp_on();
3165 debug(DBG_INFO, "radsecproxy revision $Rev$ starting");
3166 if (pidfile && !createpidfile(pidfile))
3167 debugx(1, DBG_ERR, "failed to create pidfile %s: %s", pidfile, strerror(errno));
3169 sigemptyset(&sigset);
3170 /* exit on all but SIGHUP|SIGPIPE, ignore more? */
3171 sigaddset(&sigset, SIGHUP);
3172 sigaddset(&sigset, SIGPIPE);
3173 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
3174 pthread_create(&sigth, NULL, sighandler, NULL);
3176 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
3177 srvconf = (struct clsrvconf *)entry->data;
3178 if (srvconf->dynamiclookupcommand)
3180 if (!addserver(srvconf))
3181 debugx(1, DBG_ERR, "failed to add server");
3182 if (pthread_create(&srvconf->servers->clientth, NULL, clientwr,
3183 (void *)(srvconf->servers)))
3184 debugx(1, DBG_ERR, "pthread_create failed");
3187 for (i = 0; i < RAD_PROTOCOUNT; i++) {
3190 if (protodefs[i]->initextra)
3191 protodefs[i]->initextra();
3192 if (find_clconf_type(i, NULL))
3196 /* just hang around doing nothing, anything to do here? */