2 * Copyright (C) 2006-2008 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 /* For UDP there is one server instance consisting of udpserverrd and udpserverth
10 * rd is responsible for init and launching wr
11 * For TLS there is a server instance that launches tlsserverrd for each TLS peer
12 * each tlsserverrd launches tlsserverwr
13 * For each UDP/TLS peer there is clientrd and clientwr, clientwr is responsible
14 * for init and launching rd
16 * serverrd will receive a request, processes it and puts it in the requestq of
17 * the appropriate clientwr
18 * clientwr monitors its requestq and sends requests
19 * clientrd looks for responses, processes them and puts them in the replyq of
20 * the peer the request came from
21 * serverwr monitors its reply and sends replies
23 * In addition to the main thread, we have:
24 * If UDP peers are configured, there will be 2 + 2 * #peers UDP threads
25 * If TLS peers are configured, there will initially be 2 * #peers TLS threads
26 * For each TLS peer connecting to us there will be 2 more TLS threads
27 * This is only for connected peers
28 * Example: With 3 UDP peer and 30 TLS peers, there will be a max of
29 * 1 + (2 + 2 * 3) + (2 * 30) + (2 * 30) = 129 threads
33 #include <sys/socket.h>
34 #include <netinet/in.h>
43 #include <sys/types.h>
44 #include <arpa/inet.h>
48 #include <openssl/ssl.h>
49 #include <openssl/rand.h>
50 #include <openssl/err.h>
51 #include <openssl/md5.h>
52 #include <openssl/hmac.h>
53 #include <openssl/x509v3.h>
58 #include "radsecproxy.h"
60 static struct options options;
61 struct list *clconfs, *srvconfs, *realms, *tlsconfs, *rewriteconfs;
63 static int client_udp_count = 0;
64 static int client_tls_count = 0;
66 static struct addrinfo *srcudpres = NULL;
67 static struct addrinfo *srctcpres = NULL;
69 static struct replyq *udp_server_replyq = NULL;
70 static int udp_server_sock = -1;
71 static int udp_accserver_sock = -1;
72 static int udp_client4_sock = -1;
73 static int udp_client6_sock = -1;
74 static pthread_mutex_t *ssl_locks = NULL;
75 static long *ssl_lock_count;
79 /* callbacks for making OpenSSL thread safe */
80 unsigned long ssl_thread_id() {
81 return (unsigned long)pthread_self();
84 void ssl_locking_callback(int mode, int type, const char *file, int line) {
85 if (mode & CRYPTO_LOCK) {
86 pthread_mutex_lock(&ssl_locks[type]);
87 ssl_lock_count[type]++;
89 pthread_mutex_unlock(&ssl_locks[type]);
92 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
93 int pwdlen = strlen(userdata);
94 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
96 memcpy(buf, userdata, pwdlen);
100 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
105 err_cert = X509_STORE_CTX_get_current_cert(ctx);
106 err = X509_STORE_CTX_get_error(ctx);
107 depth = X509_STORE_CTX_get_error_depth(ctx);
109 if (depth > MAX_CERT_DEPTH) {
111 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
112 X509_STORE_CTX_set_error(ctx, err);
116 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
117 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
120 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
121 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
122 debug(DBG_WARN, "\tIssuer=%s", buf);
124 case X509_V_ERR_CERT_NOT_YET_VALID:
125 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
126 debug(DBG_WARN, "\tCertificate not yet valid");
128 case X509_V_ERR_CERT_HAS_EXPIRED:
129 debug(DBG_WARN, "Certificate has expired");
131 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
132 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
137 printf("certificate verify returns %d\n", ok);
142 int resolvepeer(struct clsrvconf *conf, int ai_flags) {
143 struct addrinfo hints, *addrinfo, *res;
147 slash = conf->host ? strchr(conf->host, '/') : NULL;
151 debug(DBG_WARN, "resolvepeer: prefix length must be specified after the / in %s", conf->host);
155 if (*s < '0' || *s > '9') {
156 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
159 plen = atoi(slash + 1);
160 if (plen < 0 || plen > 128) {
161 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
166 memset(&hints, 0, sizeof(hints));
167 hints.ai_socktype = (conf->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
168 hints.ai_family = AF_UNSPEC;
169 hints.ai_flags = ai_flags;
170 if (!conf->host && !conf->port) {
171 /* getaddrinfo() doesn't like host and port to be NULL */
172 if (getaddrinfo(conf->host, DEFAULT_UDP_PORT, &hints, &addrinfo)) {
173 debug(DBG_WARN, "resolvepeer: can't resolve (null) port (null)");
176 for (res = addrinfo; res; res = res->ai_next) {
177 switch (res->ai_family) {
179 ((struct sockaddr_in *)res->ai_addr)->sin_port = 0;
182 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = 0;
188 hints.ai_flags |= AI_NUMERICHOST;
189 if (getaddrinfo(conf->host, conf->port, &hints, &addrinfo)) {
190 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
195 switch (addrinfo->ai_family) {
198 debug(DBG_WARN, "resolvepeer: prefix length must be <= 32 in %s", conf->host);
199 freeaddrinfo(addrinfo);
206 debug(DBG_WARN, "resolvepeer: prefix must be IPv4 or IPv6 in %s", conf->host);
207 freeaddrinfo(addrinfo);
210 conf->prefixlen = plen;
212 conf->prefixlen = 255;
215 freeaddrinfo(conf->addrinfo);
216 conf->addrinfo = addrinfo;
220 int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
222 struct addrinfo *res;
224 for (res = addrinfo; res; res = res->ai_next) {
225 if (family != AF_UNSPEC && family != res->ai_family)
227 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
229 debug(DBG_WARN, "bindtoaddr: socket failed");
233 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
236 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
239 if (!bind(s, res->ai_addr, res->ai_addrlen))
241 debug(DBG_WARN, "bindtoaddr: bind failed");
247 char *parsehostport(char *s, struct clsrvconf *conf, char *default_port) {
252 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
256 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
258 debugx(1, DBG_ERR, "no ] matching initial [");
262 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
265 debugx(1, DBG_ERR, "missing host/address");
267 conf->host = stringcopy(field, p - field);
270 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
271 debugx(1, DBG_ERR, "unexpected character after ]");
274 /* port number or service name is specified */;
276 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
278 debugx(1, DBG_ERR, "syntax error, : but no following port");
279 conf->port = stringcopy(field, p - field);
281 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
285 struct clsrvconf *resolve_hostport(char type, char *lconf, char *default_port) {
286 struct clsrvconf *conf;
288 conf = malloc(sizeof(struct clsrvconf));
290 debugx(1, DBG_ERR, "malloc failed");
291 memset(conf, 0, sizeof(struct clsrvconf));
294 parsehostport(lconf, conf, default_port);
295 if (!strcmp(conf->host, "*")) {
300 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
301 if (!resolvepeer(conf, AI_PASSIVE))
302 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
306 void freeclsrvres(struct clsrvconf *res) {
310 freeaddrinfo(res->addrinfo);
314 int connecttcp(struct addrinfo *addrinfo) {
316 struct addrinfo *res;
319 for (res = addrinfo; res; res = res->ai_next) {
320 s = bindtoaddr(srctcpres, res->ai_family, 1, 1);
322 debug(DBG_WARN, "connecttoserver: socket failed");
325 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
327 debug(DBG_WARN, "connecttoserver: connect failed");
334 /* returns 1 if the len first bits are equal, else 0 */
335 int prefixmatch(void *a1, void *a2, uint8_t len) {
336 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
338 if (l && memcmp(a1, a2, l))
343 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
346 /* check if conf has matching address */
347 struct clsrvconf *checkconfaddr(char type, struct sockaddr *addr, struct clsrvconf *conf) {
348 struct sockaddr_in6 *sa6 = NULL;
349 struct in_addr *a4 = NULL;
350 struct addrinfo *res;
352 if (addr->sa_family == AF_INET6) {
353 sa6 = (struct sockaddr_in6 *)addr;
354 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
355 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
359 a4 = &((struct sockaddr_in *)addr)->sin_addr;
361 if (conf->type == type) {
362 if (conf->prefixlen == 255) {
363 for (res = conf->addrinfo; res; res = res->ai_next)
364 if ((a4 && res->ai_family == AF_INET &&
365 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
366 (sa6 && res->ai_family == AF_INET6 &&
367 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
370 res = conf->addrinfo;
372 ((a4 && res->ai_family == AF_INET &&
373 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
374 (sa6 && res->ai_family == AF_INET6 &&
375 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
382 /* returns next config with matching address, or NULL */
383 struct clsrvconf *find_conf(char type, struct sockaddr *addr, struct list *confs, struct list_node **cur) {
384 struct sockaddr_in6 *sa6 = NULL;
385 struct in_addr *a4 = NULL;
386 struct addrinfo *res;
387 struct list_node *entry;
388 struct clsrvconf *conf;
390 if (addr->sa_family == AF_INET6) {
391 sa6 = (struct sockaddr_in6 *)addr;
392 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
393 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
397 a4 = &((struct sockaddr_in *)addr)->sin_addr;
399 for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) {
400 conf = (struct clsrvconf *)entry->data;
401 if (conf->type == type) {
402 if (conf->prefixlen == 255) {
403 for (res = conf->addrinfo; res; res = res->ai_next)
404 if ((a4 && res->ai_family == AF_INET &&
405 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
406 (sa6 && res->ai_family == AF_INET6 &&
407 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16))) {
413 res = conf->addrinfo;
415 ((a4 && res->ai_family == AF_INET &&
416 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
417 (sa6 && res->ai_family == AF_INET6 &&
418 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen)))) {
429 struct replyq *newreplyq() {
430 struct replyq *replyq;
432 replyq = malloc(sizeof(struct replyq));
434 debugx(1, DBG_ERR, "malloc failed");
435 replyq->replies = list_create();
436 if (!replyq->replies)
437 debugx(1, DBG_ERR, "malloc failed");
438 pthread_mutex_init(&replyq->mutex, NULL);
439 pthread_cond_init(&replyq->cond, NULL);
443 struct client *addclient(struct clsrvconf *conf) {
444 struct client *new = malloc(sizeof(struct client));
447 debug(DBG_ERR, "malloc failed");
450 if (!conf->clients) {
451 conf->clients = list_create();
452 if (!conf->clients) {
453 debug(DBG_ERR, "malloc failed");
458 memset(new, 0, sizeof(struct client));
460 new->replyq = conf->type == 'T' ? newreplyq() : udp_server_replyq;
462 list_push(conf->clients, new);
466 void removeclient(struct client *client) {
467 struct list_node *entry;
469 if (!client || !client->conf->clients)
472 pthread_mutex_lock(&client->replyq->mutex);
473 for (entry = list_first(client->replyq->replies); entry; entry = list_next(entry))
474 free(((struct reply *)entry)->buf);
475 list_destroy(client->replyq->replies);
476 pthread_cond_destroy(&client->replyq->cond);
477 pthread_mutex_unlock(&client->replyq->mutex);
478 pthread_mutex_destroy(&client->replyq->mutex);
479 list_removedata(client->conf->clients, client);
483 void removeclientrqs(struct client *client) {
484 struct list_node *entry;
485 struct server *server;
489 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
490 server = ((struct clsrvconf *)entry->data)->servers;
491 pthread_mutex_lock(&server->newrq_mutex);
492 for (i = 0; i < MAX_REQUESTS; i++) {
493 rq = server->requests + i;
494 if (rq->from == client)
497 pthread_mutex_unlock(&server->newrq_mutex);
501 void addserver(struct clsrvconf *conf) {
502 struct clsrvconf *res;
505 debugx(1, DBG_ERR, "addserver: currently works with just one server per conf");
507 conf->servers = malloc(sizeof(struct server));
509 debugx(1, DBG_ERR, "malloc failed");
510 memset(conf->servers, 0, sizeof(struct server));
511 conf->servers->conf = conf;
513 if (conf->type == 'U') {
515 res = resolve_hostport('U', options.sourceudp, NULL);
516 srcudpres = res->addrinfo;
517 res->addrinfo = NULL;
520 switch (conf->addrinfo->ai_family) {
522 if (udp_client4_sock < 0) {
523 udp_client4_sock = bindtoaddr(srcudpres, AF_INET, 0, 1);
524 if (udp_client4_sock < 0)
525 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
527 conf->servers->sock = udp_client4_sock;
530 if (udp_client6_sock < 0) {
531 udp_client6_sock = bindtoaddr(srcudpres, AF_INET6, 0, 1);
532 if (udp_client6_sock < 0)
533 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
535 conf->servers->sock = udp_client6_sock;
538 debugx(1, DBG_ERR, "addserver: unsupported address family");
543 res = resolve_hostport('T', options.sourcetcp, NULL);
544 srctcpres = res->addrinfo;
545 res->addrinfo = NULL;
548 conf->servers->sock = -1;
551 pthread_mutex_init(&conf->servers->lock, NULL);
552 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct request));
553 if (!conf->servers->requests)
554 debugx(1, DBG_ERR, "malloc failed");
555 conf->servers->newrq = 0;
556 pthread_mutex_init(&conf->servers->newrq_mutex, NULL);
557 pthread_cond_init(&conf->servers->newrq_cond, NULL);
560 /* exactly one of client and server must be non-NULL */
561 /* should probably take peer list (client(s) or server(s)) as argument instead */
562 /* if *peer == NULL we return who we received from, else require it to be from peer */
563 /* return from in sa if not NULL */
564 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
566 unsigned char buf[65536], *rad;
567 struct sockaddr_storage from;
568 socklen_t fromlen = sizeof(from);
570 struct list_node *node;
573 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
575 debug(DBG_WARN, "radudpget: recv failed");
578 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
581 debug(DBG_WARN, "radudpget: packet too small");
587 debug(DBG_WARN, "radudpget: length too small");
592 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
596 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
600 p = checkconfaddr('U', (struct sockaddr *)&from, (*client)->conf);
602 p = find_conf('U', (struct sockaddr *)&from, clconfs, NULL);
605 p = checkconfaddr('U', (struct sockaddr *)&from, (*server)->conf);
607 p = find_conf('U', (struct sockaddr *)&from, srvconfs, NULL);
610 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer %s, ignoring", addr2string((struct sockaddr *)&from, fromlen));
616 debug(DBG_ERR, "radudpget: malloc failed");
620 if (client && !*client) {
621 node = list_first(p->clients);
622 *client = node ? (struct client *)node->data : addclient(p);
627 } else if (server && !*server)
628 *server = p->servers;
632 memcpy(rad, buf, len);
638 int subjectaltnameaddr(X509 *cert, int family, struct in6_addr *addr) {
639 int loc, i, l, n, r = 0;
642 STACK_OF(GENERAL_NAME) *alt;
645 debug(DBG_DBG, "subjectaltnameaddr");
647 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
651 ex = X509_get_ext(cert, loc);
652 alt = X509V3_EXT_d2i(ex);
656 n = sk_GENERAL_NAME_num(alt);
657 for (i = 0; i < n; i++) {
658 gn = sk_GENERAL_NAME_value(alt, i);
659 if (gn->type != GEN_IPADD)
662 v = (char *)ASN1_STRING_data(gn->d.ia5);
663 l = ASN1_STRING_length(gn->d.ia5);
664 if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
665 && !memcmp(v, &addr, l)) {
670 GENERAL_NAMES_free(alt);
674 int cnregexp(X509 *cert, char *exact, regex_t *regex) {
681 nm = X509_get_subject_name(cert);
684 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
687 e = X509_NAME_get_entry(nm, loc);
688 t = X509_NAME_ENTRY_get_data(e);
689 v = (char *) ASN1_STRING_data(t);
690 l = ASN1_STRING_length(t);
694 if (l == strlen(exact) && !strncasecmp(exact, v, l))
697 s = stringcopy((char *)v, l);
699 debug(DBG_ERR, "malloc failed");
702 if (regexec(regex, s, 0, NULL, 0)) {
713 int subjectaltnameregexp(X509 *cert, int type, char *exact, regex_t *regex) {
714 int loc, i, l, n, r = 0;
717 STACK_OF(GENERAL_NAME) *alt;
720 debug(DBG_DBG, "subjectaltnameregexp");
722 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
726 ex = X509_get_ext(cert, loc);
727 alt = X509V3_EXT_d2i(ex);
731 n = sk_GENERAL_NAME_num(alt);
732 for (i = 0; i < n; i++) {
733 gn = sk_GENERAL_NAME_value(alt, i);
734 if (gn->type != type)
737 v = (char *)ASN1_STRING_data(gn->d.ia5);
738 l = ASN1_STRING_length(gn->d.ia5);
742 printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
745 if (memcmp(v, exact, l))
748 s = stringcopy((char *)v, l);
750 debug(DBG_ERR, "malloc failed");
753 if (regexec(regex, s, 0, NULL, 0)) {
762 GENERAL_NAMES_free(alt);
766 X509 *verifytlscert(SSL *ssl) {
770 if (SSL_get_verify_result(ssl) != X509_V_OK) {
771 debug(DBG_ERR, "verifytlscert: basic validation failed");
772 while ((error = ERR_get_error()))
773 debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
777 cert = SSL_get_peer_certificate(ssl);
779 debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
783 int verifyconfcert(X509 *cert, struct clsrvconf *conf) {
785 uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
786 struct in6_addr addr;
788 if (conf->certnamecheck && conf->prefixlen == 255) {
789 if (inet_pton(AF_INET, conf->host, &addr))
791 else if (inet_pton(AF_INET6, conf->host, &addr))
794 r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, conf->host, NULL);
797 debug(DBG_WARN, "verifyconfcert: No subjectaltname matching %s %s", type ? "address" : "host", conf->host);
800 debug(DBG_DBG, "verifyconfcert: Found subjectaltname matching %s %s", type ? "address" : "host", conf->host);
802 if (!cnregexp(cert, conf->host, NULL)) {
803 debug(DBG_WARN, "verifyconfcert: cn not matching host %s", conf->host);
806 debug(DBG_DBG, "verifyconfcert: Found cn matching host %s", conf->host);
809 if (conf->certcnregex) {
810 if (cnregexp(cert, NULL, conf->certcnregex) < 1) {
811 debug(DBG_WARN, "verifyconfcert: CN not matching regex");
814 debug(DBG_DBG, "verifyconfcert: CN matching regex");
816 if (conf->certuriregex) {
817 if (subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex) < 1) {
818 debug(DBG_WARN, "verifyconfcert: subjectaltname URI not matching regex");
821 debug(DBG_DBG, "verifyconfcert: subjectaltname URI matching regex");
826 void tlsconnect(struct server *server, struct timeval *when, char *text) {
831 debug(DBG_DBG, "tlsconnect called from %s", text);
832 pthread_mutex_lock(&server->lock);
833 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
834 /* already reconnected, nothing to do */
835 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
836 pthread_mutex_unlock(&server->lock);
840 debug(DBG_DBG, "tlsconnect %s", text);
843 gettimeofday(&now, NULL);
844 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
845 if (server->connectionok) {
846 server->connectionok = 0;
848 } else if (elapsed < 1)
850 else if (elapsed < 60) {
851 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
853 } else if (elapsed < 100000) {
854 debug(DBG_INFO, "tlsconnect: sleeping %ds", 60);
857 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
858 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->conf->host, server->conf->port);
859 if (server->sock >= 0)
861 if ((server->sock = connecttcp(server->conf->addrinfo)) < 0) {
862 debug(DBG_ERR, "tlsconnect: connecttcp failed");
866 SSL_free(server->ssl);
867 server->ssl = SSL_new(server->conf->ssl_ctx);
868 SSL_set_fd(server->ssl, server->sock);
869 if (SSL_connect(server->ssl) <= 0)
871 cert = verifytlscert(server->ssl);
874 if (verifyconfcert(cert, server->conf)) {
880 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->conf->host, server->conf->port);
881 gettimeofday(&server->lastconnecttry, NULL);
882 pthread_mutex_unlock(&server->lock);
885 unsigned char *radtlsget(SSL *ssl) {
887 unsigned char buf[4], *rad;
890 for (total = 0; total < 4; total += cnt) {
891 cnt = SSL_read(ssl, buf + total, 4 - total);
893 debug(DBG_ERR, "radtlsget: connection lost");
894 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
895 /* remote end sent close_notify, send one back */
905 debug(DBG_ERR, "radtlsget: malloc failed");
910 for (; total < len; total += cnt) {
911 cnt = SSL_read(ssl, rad + total, len - total);
913 debug(DBG_ERR, "radtlsget: connection lost");
914 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
915 /* remote end sent close_notify, send one back */
927 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
930 debug(DBG_DBG, "radtlsget: got %d bytes", total);
934 int clientradputudp(struct server *server, unsigned char *rad) {
936 struct sockaddr_storage sa;
937 struct sockaddr *sap;
938 struct clsrvconf *conf = server->conf;
939 in_port_t *port = NULL;
943 if (*rad == RAD_Accounting_Request) {
944 sap = (struct sockaddr *)&sa;
945 memcpy(sap, conf->addrinfo->ai_addr, conf->addrinfo->ai_addrlen);
947 sap = conf->addrinfo->ai_addr;
949 switch (sap->sa_family) {
951 port = &((struct sockaddr_in *)sap)->sin_port;
954 port = &((struct sockaddr_in6 *)sap)->sin6_port;
960 if (*rad == RAD_Accounting_Request)
961 *port = htons(ntohs(*port) + 1);
963 if (sendto(server->sock, rad, len, 0, sap, conf->addrinfo->ai_addrlen) >= 0) {
964 debug(DBG_DBG, "clienradputudp: sent UDP of length %d to %s port %d", len, conf->host, ntohs(*port));
968 debug(DBG_WARN, "clientradputudp: send failed");
972 int clientradputtls(struct server *server, unsigned char *rad) {
976 struct timeval lastconnecttry;
977 struct clsrvconf *conf = server->conf;
980 lastconnecttry = server->lastconnecttry;
981 while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
982 while ((error = ERR_get_error()))
983 debug(DBG_ERR, "clientradputtls: TLS: %s", ERR_error_string(error, NULL));
984 tlsconnect(server, &lastconnecttry, "clientradputtls");
985 lastconnecttry = server->lastconnecttry;
988 server->connectionok = 1;
989 debug(DBG_DBG, "clientradputtls: Sent %d bytes, Radius packet of length %d to TLS peer %s", cnt, len, conf->host);
993 int clientradput(struct server *server, unsigned char *rad) {
994 switch (server->conf->type) {
996 return clientradputudp(server, rad);
998 return clientradputtls(server, rad);
1003 int radsign(unsigned char *rad, unsigned char *sec) {
1004 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1005 static unsigned char first = 1;
1006 static EVP_MD_CTX mdctx;
1007 unsigned int md_len;
1010 pthread_mutex_lock(&lock);
1012 EVP_MD_CTX_init(&mdctx);
1016 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1017 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
1018 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1019 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
1021 pthread_mutex_unlock(&lock);
1025 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
1026 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1027 static unsigned char first = 1;
1028 static EVP_MD_CTX mdctx;
1029 unsigned char hash[EVP_MAX_MD_SIZE];
1033 pthread_mutex_lock(&lock);
1035 EVP_MD_CTX_init(&mdctx);
1041 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1042 EVP_DigestUpdate(&mdctx, rad, 4) &&
1043 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
1044 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
1045 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1046 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
1048 !memcmp(hash, rad + 4, 16));
1049 pthread_mutex_unlock(&lock);
1053 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
1054 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1055 static unsigned char first = 1;
1056 static HMAC_CTX hmacctx;
1057 unsigned int md_len;
1058 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
1060 pthread_mutex_lock(&lock);
1062 HMAC_CTX_init(&hmacctx);
1066 memcpy(auth, authattr, 16);
1067 memset(authattr, 0, 16);
1069 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1070 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1071 HMAC_Final(&hmacctx, hash, &md_len);
1072 memcpy(authattr, auth, 16);
1074 debug(DBG_WARN, "message auth computation failed");
1075 pthread_mutex_unlock(&lock);
1079 if (memcmp(auth, hash, 16)) {
1080 debug(DBG_WARN, "message authenticator, wrong value");
1081 pthread_mutex_unlock(&lock);
1085 pthread_mutex_unlock(&lock);
1089 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
1090 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1091 static unsigned char first = 1;
1092 static HMAC_CTX hmacctx;
1093 unsigned int md_len;
1098 pthread_mutex_lock(&lock);
1100 HMAC_CTX_init(&hmacctx);
1104 memset(authattrval, 0, 16);
1106 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1107 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1108 HMAC_Final(&hmacctx, authattrval, &md_len);
1110 debug(DBG_WARN, "message auth computation failed");
1111 pthread_mutex_unlock(&lock);
1115 pthread_mutex_unlock(&lock);
1119 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
1120 while (length > 1) {
1121 if (ATTRTYPE(attrs) == type)
1123 length -= ATTRLEN(attrs);
1124 attrs += ATTRLEN(attrs);
1129 void freerqdata(struct request *rq) {
1130 if (rq->origusername)
1131 free(rq->origusername);
1136 void sendrq(struct server *to, struct request *rq) {
1140 pthread_mutex_lock(&to->newrq_mutex);
1141 /* might simplify if only try nextid, might be ok */
1142 for (i = to->nextid; i < MAX_REQUESTS; i++)
1143 if (!to->requests[i].buf)
1145 if (i == MAX_REQUESTS) {
1146 for (i = 0; i < to->nextid; i++)
1147 if (!to->requests[i].buf)
1149 if (i == to->nextid) {
1150 debug(DBG_WARN, "sendrq: no room in queue, dropping request");
1156 rq->buf[1] = (char)i;
1158 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
1159 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->conf->secret)) {
1164 if (*(uint8_t *)rq->buf == RAD_Accounting_Request) {
1165 if (!radsign(rq->buf, (unsigned char *)to->conf->secret)) {
1166 debug(DBG_WARN, "sendrq: failed to sign Accounting-Request message");
1172 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->host);
1173 to->requests[i] = *rq;
1178 debug(DBG_DBG, "sendrq: signalling client writer");
1179 pthread_cond_signal(&to->newrq_cond);
1182 pthread_mutex_unlock(&to->newrq_mutex);
1185 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
1186 struct reply *reply;
1189 if (!radsign(buf, (unsigned char *)to->conf->secret)) {
1191 debug(DBG_WARN, "sendreply: failed to sign message");
1195 reply = malloc(sizeof(struct reply));
1198 debug(DBG_ERR, "sendreply: malloc failed");
1201 memset(reply, 0, sizeof(struct reply));
1204 reply->tosa = *tosa;
1206 pthread_mutex_lock(&to->replyq->mutex);
1208 first = list_first(to->replyq->replies) == NULL;
1210 if (!list_push(to->replyq->replies, reply)) {
1211 pthread_mutex_unlock(&to->replyq->mutex);
1214 debug(DBG_ERR, "sendreply: malloc failed");
1219 debug(DBG_DBG, "signalling server writer");
1220 pthread_cond_signal(&to->replyq->cond);
1222 pthread_mutex_unlock(&to->replyq->mutex);
1225 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1226 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1227 static unsigned char first = 1;
1228 static EVP_MD_CTX mdctx;
1229 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1230 unsigned int md_len;
1231 uint8_t i, offset = 0, out[128];
1233 pthread_mutex_lock(&lock);
1235 EVP_MD_CTX_init(&mdctx);
1241 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1242 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1243 !EVP_DigestUpdate(&mdctx, input, 16) ||
1244 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1246 pthread_mutex_unlock(&lock);
1249 for (i = 0; i < 16; i++)
1250 out[offset + i] = hash[i] ^ in[offset + i];
1251 input = out + offset - 16;
1256 memcpy(in, out, len);
1257 pthread_mutex_unlock(&lock);
1261 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1262 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1263 static unsigned char first = 1;
1264 static EVP_MD_CTX mdctx;
1265 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1266 unsigned int md_len;
1267 uint8_t i, offset = 0, out[128];
1269 pthread_mutex_lock(&lock);
1271 EVP_MD_CTX_init(&mdctx);
1277 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1278 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1279 !EVP_DigestUpdate(&mdctx, input, 16) ||
1280 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1282 pthread_mutex_unlock(&lock);
1285 for (i = 0; i < 16; i++)
1286 out[offset + i] = hash[i] ^ in[offset + i];
1287 input = in + offset;
1292 memcpy(in, out, len);
1293 pthread_mutex_unlock(&lock);
1297 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1298 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1299 static unsigned char first = 1;
1300 static EVP_MD_CTX mdctx;
1301 unsigned char hash[EVP_MAX_MD_SIZE];
1302 unsigned int md_len;
1305 pthread_mutex_lock(&lock);
1307 EVP_MD_CTX_init(&mdctx);
1312 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
1313 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
1314 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
1317 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1318 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1319 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1320 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1321 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1322 pthread_mutex_unlock(&lock);
1327 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1330 for (i = 0; i < 16; i++)
1333 for (offset = 16; offset < len; offset += 16) {
1335 printf("text + offset - 16 c(%d): ", offset / 16);
1336 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1338 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1339 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1340 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1341 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1343 pthread_mutex_unlock(&lock);
1347 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1350 for (i = 0; i < 16; i++)
1351 text[offset + i] ^= hash[i];
1355 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
1358 pthread_mutex_unlock(&lock);
1362 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1363 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1364 static unsigned char first = 1;
1365 static EVP_MD_CTX mdctx;
1366 unsigned char hash[EVP_MAX_MD_SIZE];
1367 unsigned int md_len;
1371 pthread_mutex_lock(&lock);
1373 EVP_MD_CTX_init(&mdctx);
1378 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
1379 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
1380 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
1383 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1384 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1385 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1386 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1387 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1388 pthread_mutex_unlock(&lock);
1393 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1396 for (i = 0; i < 16; i++)
1397 plain[i] = text[i] ^ hash[i];
1399 for (offset = 16; offset < len; offset += 16) {
1401 printf("text + offset - 16 c(%d): ", offset / 16);
1402 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1404 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1405 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1406 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1407 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1409 pthread_mutex_unlock(&lock);
1413 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1416 for (i = 0; i < 16; i++)
1417 plain[offset + i] = text[offset + i] ^ hash[i];
1420 memcpy(text, plain, len);
1422 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
1425 pthread_mutex_unlock(&lock);
1429 struct realm *id2realm(char *id, uint8_t len) {
1430 struct list_node *entry;
1431 struct realm *realm;
1433 for (entry = list_first(realms); entry; entry = list_next(entry)) {
1434 realm = (struct realm *)entry->data;
1435 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
1436 debug(DBG_DBG, "found matching realm: %s", realm->name);
1443 int rqinqueue(struct server *to, struct client *from, uint8_t id, uint8_t code) {
1444 struct request *rq = to->requests, *end;
1446 pthread_mutex_lock(&to->newrq_mutex);
1447 for (end = rq + MAX_REQUESTS; rq < end; rq++)
1448 if (rq->buf && !rq->received && rq->origid == id && rq->from == from && *rq->buf == code)
1450 pthread_mutex_unlock(&to->newrq_mutex);
1455 int attrvalidate(unsigned char *attrs, int length) {
1456 while (length > 1) {
1457 if (ATTRLEN(attrs) < 2) {
1458 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1461 length -= ATTRLEN(attrs);
1463 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1466 attrs += ATTRLEN(attrs);
1469 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1473 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1474 if (len < 16 || len > 128 || len % 16) {
1475 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1479 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1480 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1484 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
1486 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1487 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1493 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1496 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1497 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1500 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1501 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1507 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1508 char *oldsecret, char *newsecret) {
1509 unsigned char *attr;
1511 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1512 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1513 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1519 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint8_t subattr) {
1523 for (; attrs[0]; attrs += 2)
1524 if (attrs[0] == vendor && attrs[1] == subattr)
1529 int dovendorrewrite(uint8_t *attrs, uint16_t length, uint32_t *removevendorattrs) {
1530 uint8_t alen, sublen, rmlen = 0;
1531 uint32_t vendor = *(uint32_t *)ATTRVAL(attrs);
1534 if (!removevendorattrs)
1537 while (*removevendorattrs && *removevendorattrs != vendor)
1538 removevendorattrs += 2;
1539 if (!*removevendorattrs)
1542 alen = ATTRLEN(attrs);
1544 if (findvendorsubattr(removevendorattrs, vendor, -1)) {
1545 /* remove entire vendor attribute */
1546 memmove(attrs, attrs + alen, length - alen);
1551 subattrs = ATTRVAL(attrs) + 4;
1553 if (!attrvalidate(subattrs, sublen)) {
1554 debug(DBG_WARN, "dovendorrewrite: vendor attribute validation failed, no rewrite");
1559 while (sublen > 1) {
1560 alen = ATTRLEN(subattrs);
1563 if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) {
1564 memmove(subattrs, subattrs + alen, length);
1570 ATTRLEN(attrs) -= rmlen;
1574 void dorewrite(uint8_t *buf, struct rewrite *rewrite) {
1575 uint8_t *attrs, alen;
1576 uint16_t len, rmlen = 0;
1578 if (!rewrite || (!rewrite->removeattrs && !rewrite->removevendorattrs))
1581 len = RADLEN(buf) - 20;
1584 alen = ATTRLEN(attrs);
1586 if (rewrite->removeattrs && strchr((char *)rewrite->removeattrs, ATTRTYPE(attrs))) {
1587 memmove(attrs, attrs + alen, len);
1589 } else if (ATTRTYPE(attrs) == RAD_Attr_Vendor_Specific && rewrite->removevendorattrs)
1590 rmlen += dovendorrewrite(attrs, len, rewrite->removevendorattrs);
1595 ((uint16_t *)buf)[1] = htons(RADLEN(buf) - rmlen);
1598 /* returns a pointer to the resized attribute value */
1599 uint8_t *resizeattr(uint8_t **buf, uint8_t newvallen, uint8_t type) {
1600 uint8_t *attrs, *attr, vallen;
1604 len = RADLEN(*buf) - 20;
1607 attr = attrget(attrs, len, type);
1611 vallen = ATTRVALLEN(attr);
1612 if (vallen == newvallen)
1615 len += newvallen - vallen;
1616 if (newvallen > vallen) {
1617 new = realloc(*buf, len + 20);
1619 debug(DBG_ERR, "resizeattr: malloc failed");
1628 memmove(attr + 2 + newvallen, attr + 2 + vallen, len - (attr - attrs + newvallen));
1629 attr[1] = newvallen + 2;
1630 ((uint16_t *)*buf)[1] = htons(len + 20);
1634 int rewriteusername(struct request *rq, char *in) {
1635 size_t nmatch = 10, reslen = 0, start = 0;
1636 regmatch_t pmatch[10], *pfield;
1638 unsigned char *result;
1639 char *out = rq->from->conf->rewriteattrreplacement;
1641 if (regexec(rq->from->conf->rewriteattrregex, in, nmatch, pmatch, 0)) {
1642 debug(DBG_DBG, "rewriteattr: username not matching, no rewrite");
1646 rq->origusername = stringcopy(in, 0);
1647 if (!rq->origusername)
1650 for (i = start; out[i]; i++) {
1651 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1652 pfield = &pmatch[out[i + 1] - '0'];
1653 if (pfield->rm_so >= 0) {
1654 reslen += i - start + pfield->rm_eo - pfield->rm_so;
1660 reslen += i - start;
1662 result = resizeattr(&rq->buf, reslen, RAD_Attr_User_Name);
1668 for (i = start; out[i]; i++) {
1669 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1670 pfield = &pmatch[out[i + 1] - '0'];
1671 if (pfield->rm_so >= 0) {
1672 memcpy(result + reslen, out + start, i - start);
1673 reslen += i - start;
1674 memcpy(result + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1675 reslen += pfield->rm_eo - pfield->rm_so;
1682 memcpy(result + reslen, out + start, i - start);
1683 reslen += i - start;
1684 memcpy(in, result, reslen);
1689 const char *radmsgtype2string(uint8_t code) {
1690 static const char *rad_msg_names[] = {
1691 "", "Access-Request", "Access-Accept", "Access-Reject",
1692 "Accounting-Request", "Accounting-Response", "", "",
1693 "", "", "", "Access-Challenge",
1694 "Status-Server", "Status-Client"
1696 return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown";
1699 void char2hex(char *h, unsigned char c) {
1700 static const char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7',
1701 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
1702 h[0] = hexdigits[c / 16];
1703 h[1] = hexdigits[c % 16];
1707 char *radattr2ascii(char *ascii, size_t len, unsigned char *attr) {
1711 if (!attr || len == 1) {
1716 l = ATTRVALLEN(attr);
1717 s = (char *)ATTRVAL(attr);
1720 for (i = 0; i < l; i++) {
1721 if (s[i] > 31 && s[i] < 127) {
1723 if (d - ascii == len - 1)
1726 if (d - ascii > len - 4)
1731 if (d - ascii == len - 1)
1739 void acclog(unsigned char *attrs, int length, char *host) {
1740 unsigned char *attr;
1743 attr = attrget(attrs, length, RAD_Attr_User_Name);
1745 debug(DBG_INFO, "acclog: accounting-request from %s without username attribute", host);
1748 radattr2ascii(username, sizeof(username), attr);
1749 debug(DBG_INFO, "acclog: accounting-request from %s with username: %s", host, username);
1752 void respondaccounting(struct request *rq) {
1753 unsigned char *resp;
1757 debug(DBG_ERR, "respondstatusserver: malloc failed");
1760 memcpy(resp, rq->buf, 20);
1761 resp[0] = RAD_Accounting_Response;
1764 debug(DBG_DBG, "respondaccounting: responding to %s", rq->from->conf->host);
1765 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1768 void respondstatusserver(struct request *rq) {
1769 unsigned char *resp;
1773 debug(DBG_ERR, "respondstatusserver: malloc failed");
1776 memcpy(resp, rq->buf, 20);
1777 resp[0] = RAD_Access_Accept;
1780 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->conf->host);
1781 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1784 void respondreject(struct request *rq, char *message) {
1785 unsigned char *resp;
1788 if (message && *message)
1789 len += 2 + strlen(message);
1793 debug(DBG_ERR, "respondreject: malloc failed");
1796 memcpy(resp, rq->buf, 20);
1797 resp[0] = RAD_Access_Reject;
1798 *(uint16_t *)(resp + 2) = htons(len);
1799 if (message && *message) {
1800 resp[20] = RAD_Attr_Reply_Message;
1801 resp[21] = len - 20;
1802 memcpy(resp + 22, message, len - 22);
1804 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1807 struct server *chooseserver(struct list *srvconfs) {
1808 struct list_node *entry;
1809 struct server *server, *best = NULL, *first = NULL;
1811 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1812 server = ((struct clsrvconf *)entry->data)->servers;
1815 if (!server->connectionok)
1817 if (!server->lostrqs)
1823 if (server->lostrqs < best->lostrqs)
1826 return best ? best : first;
1829 void radsrv(struct request *rq) {
1830 uint8_t code, id, *auth, *attrs, *attr;
1832 struct server *to = NULL;
1833 char username[254], userascii[760];
1834 unsigned char newauth[16];
1835 struct realm *realm = NULL;
1837 code = *(uint8_t *)rq->buf;
1838 id = *(uint8_t *)(rq->buf + 1);
1839 len = RADLEN(rq->buf);
1840 auth = (uint8_t *)(rq->buf + 4);
1842 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1844 if (code != RAD_Access_Request && code != RAD_Status_Server && code != RAD_Accounting_Request) {
1845 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1850 attrs = rq->buf + 20;
1852 if (!attrvalidate(attrs, len)) {
1853 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1857 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1858 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(rq->buf, ATTRVAL(attr), rq->from->conf->secret))) {
1859 debug(DBG_WARN, "radsrv: message authentication failed");
1863 if (code == RAD_Status_Server) {
1864 respondstatusserver(rq);
1868 /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */
1870 if (code == RAD_Accounting_Request) {
1871 memset(newauth, 0, 16);
1872 if (!validauth(rq->buf, newauth, (unsigned char *)rq->from->conf->secret)) {
1873 debug(DBG_WARN, "radsrv: Accounting-Request message authentication failed");
1878 if (rq->from->conf->rewrite) {
1879 dorewrite(rq->buf, rq->from->conf->rewrite);
1880 len = RADLEN(rq->buf) - 20;
1883 attr = attrget(attrs, len, RAD_Attr_User_Name);
1885 if (code == RAD_Accounting_Request) {
1886 acclog(attrs, len, rq->from->conf->host);
1887 respondaccounting(rq);
1889 debug(DBG_WARN, "radsrv: ignoring access request, no username attribute");
1892 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1893 username[ATTRVALLEN(attr)] = '\0';
1894 radattr2ascii(userascii, sizeof(userascii), attr);
1896 if (rq->from->conf->rewriteattrregex) {
1897 if (!rewriteusername(rq, username)) {
1898 debug(DBG_WARN, "radsrv: username malloc failed, ignoring request");
1901 len = RADLEN(rq->buf) - 20;
1902 auth = (uint8_t *)(rq->buf + 4);
1903 attrs = rq->buf + 20;
1906 debug(DBG_DBG, "%s with username: %s", radmsgtype2string(code), userascii);
1908 realm = id2realm(username, strlen(username));
1910 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1914 to = chooseserver(code == RAD_Access_Request ? realm->srvconfs : realm->accsrvconfs);
1916 if (realm->message && code == RAD_Access_Request) {
1917 debug(DBG_INFO, "radsrv: sending reject to %s for %s", rq->from->conf->host, userascii);
1918 respondreject(rq, realm->message);
1919 } else if (realm->accresp && code == RAD_Accounting_Request) {
1920 acclog(attrs, len, rq->from->conf->host);
1921 respondaccounting(rq);
1926 if (options.loopprevention && !strcmp(rq->from->conf->name, to->conf->name)) {
1927 debug(DBG_INFO, "radsrv: Loop prevented, not forwarding request from client %s to server %s, discarding",
1928 rq->from->conf->name, to->conf->name);
1932 if (rqinqueue(to, rq->from, id, code)) {
1933 debug(DBG_INFO, "radsrv: already got %s from host %s with id %d, ignoring",
1934 radmsgtype2string(code), rq->from->conf->host, id);
1938 if (code != RAD_Accounting_Request) {
1939 if (!RAND_bytes(newauth, 16)) {
1940 debug(DBG_WARN, "radsrv: failed to generate random auth");
1946 printfchars(NULL, "auth", "%02x ", auth, 16);
1949 attr = attrget(attrs, len, RAD_Attr_User_Password);
1951 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1952 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1956 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1958 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1959 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1964 memcpy(rq->origauth, auth, 16);
1965 memcpy(auth, newauth, 16);
1973 int replyh(struct server *server, unsigned char *buf) {
1974 struct client *from;
1977 unsigned char *messageauth, *subattrs, *attrs, *attr, *username;
1978 struct sockaddr_storage fromsa;
1979 char tmp[760], stationid[760];
1981 server->connectionok = 1;
1982 server->lostrqs = 0;
1984 i = buf[1]; /* i is the id */
1986 if (*buf != RAD_Access_Accept && *buf != RAD_Access_Reject && *buf != RAD_Access_Challenge
1987 && *buf != RAD_Accounting_Response) {
1988 debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(*buf));
1991 debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(*buf), i);
1993 rq = server->requests + i;
1995 pthread_mutex_lock(&server->newrq_mutex);
1996 if (!rq->buf || !rq->tries) {
1997 pthread_mutex_unlock(&server->newrq_mutex);
1998 debug(DBG_INFO, "replyh: no matching request sent with this id, ignoring reply");
2003 pthread_mutex_unlock(&server->newrq_mutex);
2004 debug(DBG_INFO, "replyh: already received, ignoring reply");
2008 if (!validauth(buf, rq->buf + 4, (unsigned char *)server->conf->secret)) {
2009 pthread_mutex_unlock(&server->newrq_mutex);
2010 debug(DBG_WARN, "replyh: invalid auth, ignoring reply");
2014 len = RADLEN(buf) - 20;
2017 if (!attrvalidate(attrs, len)) {
2018 pthread_mutex_unlock(&server->newrq_mutex);
2019 debug(DBG_WARN, "replyh: attribute validation failed, ignoring reply");
2023 /* Message Authenticator */
2024 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2026 if (ATTRVALLEN(messageauth) != 16) {
2027 pthread_mutex_unlock(&server->newrq_mutex);
2028 debug(DBG_WARN, "replyh: illegal message auth attribute length, ignoring reply");
2031 memcpy(tmp, buf + 4, 16);
2032 memcpy(buf + 4, rq->buf + 4, 16);
2033 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->conf->secret)) {
2034 pthread_mutex_unlock(&server->newrq_mutex);
2035 debug(DBG_WARN, "replyh: message authentication failed, ignoring reply");
2038 memcpy(buf + 4, tmp, 16);
2039 debug(DBG_DBG, "replyh: message auth ok");
2042 if (*rq->buf == RAD_Status_Server) {
2044 pthread_mutex_unlock(&server->newrq_mutex);
2045 debug(DBG_DBG, "replyh: got status server response from %s", server->conf->host);
2051 pthread_mutex_unlock(&server->newrq_mutex);
2052 debug(DBG_INFO, "replyh: client gone, ignoring reply");
2056 if (server->conf->rewrite) {
2057 dorewrite(buf, server->conf->rewrite);
2058 len = RADLEN(buf) - 20;
2062 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
2063 if (ATTRVALLEN(attr) <= 4)
2066 if (attr[2] != 0 || attr[3] != 0 || attr[4] != 1 || attr[5] != 55) /* 311 == MS */
2069 sublen = ATTRVALLEN(attr) - 4;
2070 subattrs = ATTRVAL(attr) + 4;
2071 if (!attrvalidate(subattrs, sublen) ||
2072 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
2073 rq, server->conf->secret, from->conf->secret) ||
2074 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
2075 rq, server->conf->secret, from->conf->secret))
2079 pthread_mutex_unlock(&server->newrq_mutex);
2080 debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply");
2084 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject || *buf == RAD_Accounting_Response) {
2085 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_User_Name);
2087 radattr2ascii(tmp, sizeof(tmp), attr);
2088 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Calling_Station_Id);
2090 radattr2ascii(stationid, sizeof(stationid), attr);
2091 debug(DBG_INFO, "%s for user %s stationid %s from %s",
2092 radmsgtype2string(*buf), tmp, stationid, server->conf->host);
2094 debug(DBG_INFO, "%s for user %s from %s", radmsgtype2string(*buf), tmp, server->conf->host);
2098 buf[1] = (char)rq->origid;
2099 memcpy(buf + 4, rq->origauth, 16);
2101 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
2104 if (rq->origusername) {
2105 username = resizeattr(&buf, strlen(rq->origusername), RAD_Attr_User_Name);
2107 pthread_mutex_unlock(&server->newrq_mutex);
2108 debug(DBG_WARN, "replyh: malloc failed, ignoring reply");
2111 memcpy(username, rq->origusername, strlen(rq->origusername));
2112 len = RADLEN(buf) - 20;
2115 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2119 if (!createmessageauth(buf, ATTRVAL(messageauth), from->conf->secret)) {
2120 pthread_mutex_unlock(&server->newrq_mutex);
2121 debug(DBG_WARN, "replyh: failed to create authenticator, malloc failed?, ignoring reply");
2124 debug(DBG_DBG, "replyh: computed messageauthattr");
2127 if (from->conf->type == 'U')
2128 fromsa = rq->fromsa;
2129 /* once we set received = 1, rq may be reused */
2132 debug(DBG_INFO, "replyh: passing reply to client %s", from->conf->name);
2133 sendreply(from, buf, from->conf->type == 'U' ? &fromsa : NULL);
2134 pthread_mutex_unlock(&server->newrq_mutex);
2138 void *udpclientrd(void *arg) {
2139 struct server *server;
2141 int *s = (int *)arg;
2145 buf = radudpget(*s, NULL, &server, NULL);
2146 if (!replyh(server, buf))
2151 void *tlsclientrd(void *arg) {
2152 struct server *server = (struct server *)arg;
2154 struct timeval lastconnecttry;
2157 /* yes, lastconnecttry is really necessary */
2158 lastconnecttry = server->lastconnecttry;
2159 buf = radtlsget(server->ssl);
2161 tlsconnect(server, &lastconnecttry, "clientrd");
2165 if (!replyh(server, buf))
2170 void *clientwr(void *arg) {
2171 struct server *server = (struct server *)arg;
2173 pthread_t tlsclientrdth;
2176 struct timeval now, lastsend;
2177 struct timespec timeout;
2178 struct request statsrvrq;
2179 unsigned char statsrvbuf[38];
2181 memset(&timeout, 0, sizeof(struct timespec));
2183 if (server->conf->statusserver) {
2184 memset(&statsrvrq, 0, sizeof(struct request));
2185 memset(statsrvbuf, 0, sizeof(statsrvbuf));
2186 statsrvbuf[0] = RAD_Status_Server;
2188 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
2189 statsrvbuf[21] = 18;
2190 gettimeofday(&lastsend, NULL);
2193 if (server->conf->type == 'U') {
2194 server->connectionok = 1;
2196 tlsconnect(server, NULL, "new client");
2197 server->connectionok = 1;
2198 if (pthread_create(&tlsclientrdth, NULL, tlsclientrd, (void *)server))
2199 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
2203 pthread_mutex_lock(&server->newrq_mutex);
2204 if (!server->newrq) {
2205 gettimeofday(&now, NULL);
2206 if (server->conf->statusserver) {
2207 /* random 0-7 seconds */
2208 RAND_bytes(&rnd, 1);
2210 if (!timeout.tv_sec || timeout.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
2211 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
2213 if (timeout.tv_sec) {
2214 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
2215 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
2218 debug(DBG_DBG, "clientwr: waiting for new request");
2219 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
2222 if (server->newrq) {
2223 debug(DBG_DBG, "clientwr: got new request");
2226 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
2227 pthread_mutex_unlock(&server->newrq_mutex);
2229 for (i = 0; i < MAX_REQUESTS; i++) {
2230 pthread_mutex_lock(&server->newrq_mutex);
2231 while (i < MAX_REQUESTS && !server->requests[i].buf)
2233 if (i == MAX_REQUESTS) {
2234 pthread_mutex_unlock(&server->newrq_mutex);
2237 rq = server->requests + i;
2240 debug(DBG_DBG, "clientwr: packet %d in queue is marked as received", i);
2242 debug(DBG_DBG, "clientwr: freeing received packet %d from queue", i);
2244 /* setting this to NULL means that it can be reused */
2247 pthread_mutex_unlock(&server->newrq_mutex);
2251 gettimeofday(&now, NULL);
2252 if (now.tv_sec < rq->expiry.tv_sec) {
2253 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2254 timeout.tv_sec = rq->expiry.tv_sec;
2255 pthread_mutex_unlock(&server->newrq_mutex);
2259 if (rq->tries == (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2260 ? 1 : server->conf->retrycount + 1)) {
2261 debug(DBG_DBG, "clientwr: removing expired packet from queue");
2262 if (server->conf->statusserver) {
2263 if (*rq->buf == RAD_Status_Server) {
2264 debug(DBG_WARN, "clientwr: no status server response, %s dead?", server->conf->host);
2265 if (server->lostrqs < 255)
2269 debug(DBG_WARN, "clientwr: no server response, %s dead?", server->conf->host);
2270 if (server->lostrqs < 255)
2274 /* setting this to NULL means that it can be reused */
2276 pthread_mutex_unlock(&server->newrq_mutex);
2279 pthread_mutex_unlock(&server->newrq_mutex);
2281 rq->expiry.tv_sec = now.tv_sec +
2282 (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2283 ? server->conf->retryinterval * (server->conf->retrycount + 1) : server->conf->retryinterval);
2284 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2285 timeout.tv_sec = rq->expiry.tv_sec;
2287 clientradput(server, server->requests[i].buf);
2288 gettimeofday(&lastsend, NULL);
2290 if (server->conf->statusserver) {
2291 gettimeofday(&now, NULL);
2292 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
2293 if (!RAND_bytes(statsrvbuf + 4, 16)) {
2294 debug(DBG_WARN, "clientwr: failed to generate random auth");
2297 statsrvrq.buf = malloc(sizeof(statsrvbuf));
2298 if (!statsrvrq.buf) {
2299 debug(DBG_ERR, "clientwr: malloc failed");
2302 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
2303 debug(DBG_DBG, "clientwr: sending status server to %s", server->conf->host);
2304 lastsend.tv_sec = now.tv_sec;
2305 sendrq(server, &statsrvrq);
2311 void *udpserverwr(void *arg) {
2312 struct replyq *replyq = udp_server_replyq;
2313 struct reply *reply;
2316 pthread_mutex_lock(&replyq->mutex);
2317 while (!(reply = (struct reply *)list_shift(replyq->replies))) {
2318 debug(DBG_DBG, "udp server writer, waiting for signal");
2319 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2320 debug(DBG_DBG, "udp server writer, got signal");
2322 pthread_mutex_unlock(&replyq->mutex);
2324 if (sendto(*(uint8_t *)reply->buf == RAD_Accounting_Response ? udp_accserver_sock : udp_server_sock,
2325 reply->buf, RADLEN(reply->buf), 0,
2326 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
2327 debug(DBG_WARN, "sendudp: send failed");
2333 void *udpserverrd(void *arg) {
2335 pthread_t udpserverwrth;
2336 struct clsrvconf *listenres;
2338 listenres = resolve_hostport('U', options.listenudp, DEFAULT_UDP_PORT);
2339 if ((udp_server_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2340 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2342 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
2343 listenres->host ? listenres->host : "*", listenres->port);
2344 freeclsrvres(listenres);
2346 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
2347 debugx(1, DBG_ERR, "pthread_create failed");
2350 memset(&rq, 0, sizeof(struct request));
2351 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
2356 void *udpaccserverrd(void *arg) {
2358 struct clsrvconf *listenres;
2360 listenres = resolve_hostport('U', options.listenaccudp, DEFAULT_UDP_PORT);
2361 if ((udp_accserver_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2362 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2364 debug(DBG_WARN, "udpaccserverrd: listening for UDP on %s:%s",
2365 listenres->host ? listenres->host : "*", listenres->port);
2366 freeclsrvres(listenres);
2369 memset(&rq, 0, sizeof(struct request));
2370 rq.buf = radudpget(udp_accserver_sock, &rq.from, NULL, &rq.fromsa);
2371 if (*rq.buf == RAD_Accounting_Request || *rq.buf == RAD_Status_Server) {
2375 debug(DBG_INFO, "udpaccserverrd: accepting only accounting-request and status-server, ignoring");
2380 void *tlsserverwr(void *arg) {
2382 unsigned long error;
2383 struct client *client = (struct client *)arg;
2384 struct replyq *replyq;
2385 struct reply *reply;
2387 debug(DBG_DBG, "tlsserverwr starting for %s", client->conf->host);
2388 replyq = client->replyq;
2390 pthread_mutex_lock(&replyq->mutex);
2391 while (!list_first(replyq->replies)) {
2393 debug(DBG_DBG, "tls server writer, waiting for signal");
2394 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2395 debug(DBG_DBG, "tls server writer, got signal");
2398 /* ssl might have changed while waiting */
2399 pthread_mutex_unlock(&replyq->mutex);
2400 debug(DBG_DBG, "tlsserverwr: exiting as requested");
2404 reply = (struct reply *)list_shift(replyq->replies);
2405 pthread_mutex_unlock(&replyq->mutex);
2406 cnt = SSL_write(client->ssl, reply->buf, RADLEN(reply->buf));
2408 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
2409 cnt, RADLEN(reply->buf));
2411 while ((error = ERR_get_error()))
2412 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
2418 void tlsserverrd(struct client *client) {
2420 pthread_t tlsserverwrth;
2422 debug(DBG_DBG, "tlsserverrd starting for %s", client->conf->host);
2424 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
2425 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
2430 memset(&rq, 0, sizeof(struct request));
2431 rq.buf = radtlsget(client->ssl);
2434 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->conf->host);
2439 debug(DBG_ERR, "tlsserverrd: connection lost");
2440 /* stop writer by setting ssl to NULL and give signal in case waiting for data */
2442 pthread_mutex_lock(&client->replyq->mutex);
2443 pthread_cond_signal(&client->replyq->cond);
2444 pthread_mutex_unlock(&client->replyq->mutex);
2445 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
2446 pthread_join(tlsserverwrth, NULL);
2447 removeclientrqs(client);
2448 debug(DBG_DBG, "tlsserverrd for %s exiting", client->conf->host);
2451 void *tlsservernew(void *arg) {
2453 struct sockaddr_storage from;
2454 size_t fromlen = sizeof(from);
2455 struct clsrvconf *conf;
2456 struct list_node *cur = NULL;
2459 unsigned long error;
2460 struct client *client;
2463 if (getpeername(s, (struct sockaddr *)&from, &fromlen)) {
2464 debug(DBG_DBG, "tlsserverrd: getpeername failed, exiting");
2467 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
2469 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2471 ssl = SSL_new(conf->ssl_ctx);
2474 if (SSL_accept(ssl) <= 0) {
2475 while ((error = ERR_get_error()))
2476 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
2477 debug(DBG_ERR, "SSL_accept failed");
2480 cert = verifytlscert(ssl);
2486 if (verifyconfcert(cert, conf)) {
2488 client = addclient(conf);
2491 tlsserverrd(client);
2492 removeclient(client);
2494 debug(DBG_WARN, "Failed to create new client instance");
2497 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2499 debug(DBG_WARN, "ignoring request, no matching TLS client");
2505 shutdown(s, SHUT_RDWR);
2511 pthread_t tlsserverth;
2513 struct sockaddr_storage from;
2514 size_t fromlen = sizeof(from);
2515 struct clsrvconf *listenres;
2517 listenres = resolve_hostport('T', options.listentcp, DEFAULT_TLS_PORT);
2518 if ((s = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2519 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
2521 debug(DBG_WARN, "listening for incoming TCP on %s:%s", listenres->host ? listenres->host : "*", listenres->port);
2522 freeclsrvres(listenres);
2526 snew = accept(s, (struct sockaddr *)&from, &fromlen);
2528 debug(DBG_WARN, "accept failed");
2531 if (pthread_create(&tlsserverth, NULL, tlsservernew, (void *)&snew)) {
2532 debug(DBG_ERR, "tlslistener: pthread_create failed");
2533 shutdown(snew, SHUT_RDWR);
2537 pthread_detach(tlsserverth);
2542 void tlsadd(char *value, char *cacertfile, char *cacertpath, char *certfile, char *certkeyfile, char *certkeypwd, uint8_t crlcheck) {
2545 STACK_OF(X509_NAME) *calist;
2548 unsigned long error;
2550 if (!certfile || !certkeyfile)
2551 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified in TLS context %s", value);
2553 if (!cacertfile && !cacertpath)
2554 debugx(1, DBG_ERR, "CA Certificate file or path need to be specified in TLS context %s", value);
2557 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
2558 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
2559 for (i = 0; i < CRYPTO_num_locks(); i++) {
2560 ssl_lock_count[i] = 0;
2561 pthread_mutex_init(&ssl_locks[i], NULL);
2563 CRYPTO_set_id_callback(ssl_thread_id);
2564 CRYPTO_set_locking_callback(ssl_locking_callback);
2566 SSL_load_error_strings();
2569 while (!RAND_status()) {
2570 time_t t = time(NULL);
2571 pid_t pid = getpid();
2572 RAND_seed((unsigned char *)&t, sizeof(time_t));
2573 RAND_seed((unsigned char *)&pid, sizeof(pid));
2576 ctx = SSL_CTX_new(TLSv1_method());
2578 SSL_CTX_set_default_passwd_cb_userdata(ctx, certkeypwd);
2579 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
2581 if (!SSL_CTX_use_certificate_chain_file(ctx, certfile) ||
2582 !SSL_CTX_use_PrivateKey_file(ctx, certkeyfile, SSL_FILETYPE_PEM) ||
2583 !SSL_CTX_check_private_key(ctx) ||
2584 !SSL_CTX_load_verify_locations(ctx, cacertfile, cacertpath)) {
2585 while ((error = ERR_get_error()))
2586 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2587 debugx(1, DBG_ERR, "Error initialising SSL/TLS in TLS context %s", value);
2590 calist = cacertfile ? SSL_load_client_CA_file(cacertfile) : NULL;
2591 if (!cacertfile || calist) {
2594 calist = sk_X509_NAME_new_null();
2595 if (!SSL_add_dir_cert_subjects_to_stack(calist, cacertpath)) {
2596 sk_X509_NAME_free(calist);
2602 while ((error = ERR_get_error()))
2603 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2604 debugx(1, DBG_ERR, "Error adding CA subjects in TLS context %s", value);
2606 SSL_CTX_set_client_CA_list(ctx, calist);
2608 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
2609 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
2612 x509_s = SSL_CTX_get_cert_store(ctx);
2613 X509_STORE_set_flags(x509_s, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
2616 new = malloc(sizeof(struct tls));
2617 if (!new || !list_push(tlsconfs, new))
2618 debugx(1, DBG_ERR, "malloc failed");
2620 memset(new, 0, sizeof(struct tls));
2621 new->name = stringcopy(value, 0);
2623 debugx(1, DBG_ERR, "malloc failed");
2626 debug(DBG_DBG, "tlsadd: added TLS context %s", value);
2630 struct list_node *entry;
2633 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2634 t = (struct tls *)entry->data;
2638 SSL_CTX_free(t->ctx);
2640 list_destroy(tlsconfs);
2644 SSL_CTX *tlsgetctx(char *alt1, char *alt2) {
2645 struct list_node *entry;
2646 struct tls *t, *t1 = NULL, *t2 = NULL;
2648 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2649 t = (struct tls *)entry->data;
2650 if (!strcasecmp(t->name, alt1)) {
2654 if (!t2 && alt2 && !strcasecmp(t->name, alt2))
2665 struct list *addsrvconfs(char *value, char **names) {
2666 struct list *conflist;
2668 struct list_node *entry;
2669 struct clsrvconf *conf = NULL;
2671 if (!names || !*names)
2674 conflist = list_create();
2676 debugx(1, DBG_ERR, "malloc failed");
2678 for (n = 0; names[n]; n++) {
2679 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2680 conf = (struct clsrvconf *)entry->data;
2681 if (!strcasecmp(names[n], conf->name))
2685 debugx(1, DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]);
2687 if (!list_push(conflist, conf))
2688 debugx(1, DBG_ERR, "malloc failed");
2689 debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value);
2695 void addrealm(char *value, char **servers, char **accservers, char *message, uint8_t accresp) {
2697 struct realm *realm;
2698 char *s, *regex = NULL;
2700 if (*value == '/') {
2701 /* regexp, remove optional trailing / if present */
2702 if (value[strlen(value) - 1] == '/')
2703 value[strlen(value) - 1] = '\0';
2705 /* not a regexp, let us make it one */
2706 if (*value == '*' && !value[1])
2707 regex = stringcopy(".*", 0);
2709 for (n = 0, s = value; *s;)
2712 regex = malloc(strlen(value) + n + 3);
2715 for (n = 1, s = value; *s; s++) {
2725 debugx(1, DBG_ERR, "malloc failed");
2726 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2729 realm = malloc(sizeof(struct realm));
2731 debugx(1, DBG_ERR, "malloc failed");
2733 memset(realm, 0, sizeof(struct realm));
2734 realm->name = stringcopy(value, 0);
2736 debugx(1, DBG_ERR, "malloc failed");
2737 if (message && strlen(message) > 253)
2738 debugx(1, DBG_ERR, "ReplyMessage can be at most 253 bytes");
2739 realm->message = message;
2740 realm->accresp = accresp;
2742 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_ICASE | REG_NOSUB))
2743 debugx(1, DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2747 realm->srvconfs = addsrvconfs(value, servers);
2748 realm->accsrvconfs = addsrvconfs(value, accservers);
2750 if (!list_push(realms, realm))
2751 debugx(1, DBG_ERR, "malloc failed");
2752 debug(DBG_DBG, "addrealm: added realm %s", value);
2755 int addmatchcertattr(struct clsrvconf *conf, char *matchcertattr) {
2759 if (!strncasecmp(matchcertattr, "CN:/", 4)) {
2760 r = &conf->certcnregex;
2761 v = matchcertattr + 4;
2762 } else if (!strncasecmp(matchcertattr, "SubjectAltName:URI:/", 20)) {
2763 r = &conf->certuriregex;
2764 v = matchcertattr + 20;
2769 /* regexp, remove optional trailing / if present */
2770 if (v[strlen(v) - 1] == '/')
2771 v[strlen(v) - 1] = '\0';
2775 *r = malloc(sizeof(regex_t));
2777 debug(DBG_ERR, "malloc failed");
2780 if (regcomp(*r, v, REG_ICASE | REG_NOSUB)) {
2783 debug(DBG_ERR, "failed to compile regular expression %s", v);
2789 int addrewriteattr(struct clsrvconf *conf, char *rewriteattr) {
2792 v = rewriteattr + 11;
2793 if (strncasecmp(rewriteattr, "User-Name:/", 11) || !*v)
2795 /* regexp, remove optional trailing / if present */
2796 if (v[strlen(v) - 1] == '/')
2797 v[strlen(v) - 1] = '\0';
2805 conf->rewriteattrregex = malloc(sizeof(regex_t));
2806 if (!conf->rewriteattrregex) {
2807 debug(DBG_ERR, "malloc failed");
2811 conf->rewriteattrreplacement = stringcopy(w, 0);
2812 if (!conf->rewriteattrreplacement) {
2813 free(conf->rewriteattrregex);
2814 conf->rewriteattrregex = NULL;
2818 if (regcomp(conf->rewriteattrregex, v, REG_ICASE | REG_EXTENDED)) {
2819 free(conf->rewriteattrregex);
2820 conf->rewriteattrregex = NULL;
2821 free(conf->rewriteattrreplacement);
2822 conf->rewriteattrreplacement = NULL;
2823 debug(DBG_ERR, "failed to compile regular expression %s", v);
2830 /* should accept both names and numeric values, only numeric right now */
2831 uint8_t attrname2val(char *attrname) {
2834 val = atoi(attrname);
2835 return val > 0 && val < 256 ? val : 0;
2838 /* should accept both names and numeric values, only numeric right now */
2839 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) {
2842 *vendor = atoi(attrname);
2843 s = strchr(attrname, ':');
2848 *type = atoi(s + 1);
2849 return *type >= 0 && *type < 256;
2852 void rewritefree() {
2853 struct list_node *entry;
2854 struct rewriteconf *r;
2856 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2857 r = (struct rewriteconf *)entry->data;
2863 list_destroy(rewriteconfs);
2864 rewriteconfs = NULL;
2867 struct rewrite *getrewrite(char *alt1, char *alt2) {
2868 struct list_node *entry;
2869 struct rewriteconf *r, *r1 = NULL, *r2 = NULL;
2871 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2872 r = (struct rewriteconf *)entry->data;
2873 if (!strcasecmp(r->name, alt1)) {
2877 if (!r2 && alt2 && !strcasecmp(r->name, alt2))
2888 void addrewrite(char *value, char **attrs, char **vattrs) {
2889 struct rewriteconf *new;
2890 struct rewrite *rewrite = NULL;
2893 uint32_t *p, *va = NULL;
2897 for (; attrs[n]; n++);
2898 a = malloc((n + 1) * sizeof(uint8_t));
2900 debugx(1, DBG_ERR, "malloc failed");
2902 for (i = 0; i < n; i++) {
2903 if (!(a[i] = attrname2val(attrs[i])))
2904 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", attrs[i]);
2913 for (; vattrs[n]; n++);
2914 va = malloc((2 * n + 1) * sizeof(uint32_t));
2916 debugx(1, DBG_ERR, "malloc failed");
2918 for (p = va, i = 0; i < n; i++, p += 2) {
2919 if (!vattrname2val(vattrs[i], p, p + 1))
2920 debugx(1, DBG_ERR, "addrewrite: invalid vendor attribute %s", vattrs[i]);
2928 rewrite = malloc(sizeof(struct rewrite));
2930 debugx(1, DBG_ERR, "malloc failed");
2931 rewrite->removeattrs = a;
2932 rewrite->removevendorattrs = va;
2935 new = malloc(sizeof(struct rewriteconf));
2936 if (!new || !list_push(rewriteconfs, new))
2937 debugx(1, DBG_ERR, "malloc failed");
2939 memset(new, 0, sizeof(struct rewriteconf));
2940 new->name = stringcopy(value, 0);
2942 debugx(1, DBG_ERR, "malloc failed");
2944 new->rewrite = rewrite;
2945 debug(DBG_DBG, "addrewrite: added rewrite block %s", value);
2948 void confclient_cb(struct gconffile **cf, char *block, char *opt, char *val) {
2949 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL, *rewriteattr = NULL;
2950 struct clsrvconf *conf;
2952 debug(DBG_DBG, "confclient_cb called for %s", block);
2954 conf = malloc(sizeof(struct clsrvconf));
2955 if (!conf || !list_push(clconfs, conf))
2956 debugx(1, DBG_ERR, "malloc failed");
2957 memset(conf, 0, sizeof(struct clsrvconf));
2958 conf->certnamecheck = 1;
2960 getgenericconfig(cf, block,
2961 "type", CONF_STR, &type,
2962 "host", CONF_STR, &conf->host,
2963 "secret", CONF_STR, &conf->secret,
2964 "tls", CONF_STR, &tls,
2965 "matchcertificateattribute", CONF_STR, &matchcertattr,
2966 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
2967 "rewrite", CONF_STR, &rewrite,
2968 "rewriteattribute", CONF_STR, &rewriteattr,
2972 conf->name = stringcopy(val, 0);
2974 conf->host = stringcopy(val, 0);
2976 if (type && !strcasecmp(type, "udp")) {
2979 } else if (type && !strcasecmp(type, "tls")) {
2980 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultclient", "default");
2982 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
2983 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
2984 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2988 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
2993 free(matchcertattr);
2995 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultclient", "default");
2998 if (!addrewriteattr(conf, rewriteattr))
2999 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
3003 if (!resolvepeer(conf, 0))
3004 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3006 if (!conf->secret) {
3007 if (conf->type == 'U')
3008 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3009 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3013 void confserver_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3014 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL;
3015 long int retryinterval = LONG_MIN, retrycount = LONG_MIN;
3016 struct clsrvconf *conf;
3018 debug(DBG_DBG, "confserver_cb called for %s", block);
3020 conf = malloc(sizeof(struct clsrvconf));
3021 if (!conf || !list_push(srvconfs, conf))
3022 debugx(1, DBG_ERR, "malloc failed");
3023 memset(conf, 0, sizeof(struct clsrvconf));
3024 conf->certnamecheck = 1;
3026 getgenericconfig(cf, block,
3027 "type", CONF_STR, &type,
3028 "host", CONF_STR, &conf->host,
3029 "port", CONF_STR, &conf->port,
3030 "secret", CONF_STR, &conf->secret,
3031 "tls", CONF_STR, &tls,
3032 "MatchCertificateAttribute", CONF_STR, &matchcertattr,
3033 "rewrite", CONF_STR, &rewrite,
3034 "StatusServer", CONF_BLN, &conf->statusserver,
3035 "RetryInterval", CONF_LINT, &retryinterval,
3036 "RetryCount", CONF_LINT, &retrycount,
3037 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3041 conf->name = stringcopy(val, 0);
3043 conf->host = stringcopy(val, 0);
3045 if (type && !strcasecmp(type, "udp")) {
3048 conf->port = stringcopy(DEFAULT_UDP_PORT, 0);
3049 } else if (type && !strcasecmp(type, "tls")) {
3050 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultserver", "default");
3052 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
3053 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
3054 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3056 conf->port = stringcopy(DEFAULT_TLS_PORT, 0);
3059 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3064 free(matchcertattr);
3066 if (retryinterval != LONG_MIN) {
3067 if (retryinterval < 1 || retryinterval > 60)
3068 debugx(1, DBG_ERR, "error in block %s, value of option RetryInterval is %d, must be 1-60", block, retryinterval);
3069 conf->retryinterval = (uint8_t)retryinterval;
3071 conf->retryinterval = REQUEST_RETRY_INTERVAL;
3073 if (retrycount != LONG_MIN) {
3074 if (retrycount < 0 || retrycount > 10)
3075 debugx(1, DBG_ERR, "error in block %s, value of option RetryCount is %d, must be 0-10", block, retrycount);
3076 conf->retrycount = (uint8_t)retrycount;
3078 conf->retrycount = REQUEST_RETRY_COUNT;
3080 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultserver", "default");
3082 if (!resolvepeer(conf, 0))
3083 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3085 if (!conf->secret) {
3086 if (conf->type == 'U')
3087 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3088 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3092 void confrealm_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3093 char **servers = NULL, **accservers = NULL, *msg = NULL;
3094 uint8_t accresp = 0;
3096 debug(DBG_DBG, "confrealm_cb called for %s", block);
3098 getgenericconfig(cf, block,
3099 "server", CONF_MSTR, &servers,
3100 "accountingServer", CONF_MSTR, &accservers,
3101 "ReplyMessage", CONF_STR, &msg,
3102 "AccountingResponse", CONF_BLN, &accresp,
3106 addrealm(val, servers, accservers, msg, accresp);
3109 void conftls_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3110 char *cacertfile = NULL, *cacertpath = NULL, *certfile = NULL, *certkeyfile = NULL, *certkeypwd = NULL;
3111 uint8_t crlcheck = 0;
3113 debug(DBG_DBG, "conftls_cb called for %s", block);
3115 getgenericconfig(cf, block,
3116 "CACertificateFile", CONF_STR, &cacertfile,
3117 "CACertificatePath", CONF_STR, &cacertpath,
3118 "CertificateFile", CONF_STR, &certfile,
3119 "CertificateKeyFile", CONF_STR, &certkeyfile,
3120 "CertificateKeyPassword", CONF_STR, &certkeypwd,
3121 "CRLCheck", CONF_BLN, &crlcheck,
3125 tlsadd(val, cacertfile, cacertpath, certfile, certkeyfile, certkeypwd, crlcheck);
3133 void confrewrite_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3134 char **attrs = NULL, **vattrs = NULL;
3136 debug(DBG_DBG, "confrewrite_cb called for %s", block);
3138 getgenericconfig(cf, block,
3139 "removeAttribute", CONF_MSTR, &attrs,
3140 "removeVendorAttribute", CONF_MSTR, &vattrs,
3143 addrewrite(val, attrs, vattrs);
3146 void getmainconfig(const char *configfile) {
3147 long int loglevel = LONG_MIN;
3148 struct gconffile *cfs;
3150 cfs = openconfigfile(configfile);
3151 memset(&options, 0, sizeof(options));
3153 clconfs = list_create();
3155 debugx(1, DBG_ERR, "malloc failed");
3157 srvconfs = list_create();
3159 debugx(1, DBG_ERR, "malloc failed");
3161 realms = list_create();
3163 debugx(1, DBG_ERR, "malloc failed");
3165 tlsconfs = list_create();
3167 debugx(1, DBG_ERR, "malloc failed");
3169 rewriteconfs = list_create();
3171 debugx(1, DBG_ERR, "malloc failed");
3173 getgenericconfig(&cfs, NULL,
3174 "ListenUDP", CONF_STR, &options.listenudp,
3175 "ListenTCP", CONF_STR, &options.listentcp,
3176 "ListenAccountingUDP", CONF_STR, &options.listenaccudp,
3177 "SourceUDP", CONF_STR, &options.sourceudp,
3178 "SourceTCP", CONF_STR, &options.sourcetcp,
3179 "LogLevel", CONF_LINT, &loglevel,
3180 "LogDestination", CONF_STR, &options.logdestination,
3181 "LoopPrevention", CONF_BLN, &options.loopprevention,
3182 "Client", CONF_CBK, confclient_cb,
3183 "Server", CONF_CBK, confserver_cb,
3184 "Realm", CONF_CBK, confrealm_cb,
3185 "TLS", CONF_CBK, conftls_cb,
3186 "Rewrite", CONF_CBK, confrewrite_cb,
3192 if (loglevel != LONG_MIN) {
3193 if (loglevel < 1 || loglevel > 4)
3194 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %d, must be 1, 2, 3 or 4", configfile, loglevel);
3195 options.loglevel = (uint8_t)loglevel;
3199 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile) {
3202 while ((c = getopt(argc, argv, "c:d:fpv")) != -1) {
3205 *configfile = optarg;
3208 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
3209 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
3210 *loglevel = *optarg - '0';
3219 debugx(0, DBG_ERR, "radsecproxy 1.1");
3224 if (!(argc - optind))
3228 debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -p ] [ -v ]", argv[0]);
3232 int daemon(int a, int b) {
3240 for (i = 0; i < 3; i++) {
3242 open("/dev/null", O_RDWR);
3248 void *sighandler(void *arg) {
3253 sigemptyset(&sigset);
3254 sigaddset(&sigset, SIGPIPE);
3255 sigwait(&sigset, &sig);
3256 /* only get SIGPIPE right now, so could simplify below code */
3259 /* completely ignoring this */
3262 debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?");
3265 debug(DBG_WARN, "sighandler: ignoring signal %d", sig);
3270 int main(int argc, char **argv) {
3271 pthread_t sigth, udpserverth, udpaccserverth, udpclient4rdth, udpclient6rdth;
3273 struct list_node *entry;
3274 uint8_t foreground = 0, pretend = 0, loglevel = 0;
3275 char *configfile = NULL;
3277 debug_init("radsecproxy");
3278 debug_set_level(DEBUG_LEVEL);
3279 getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile);
3281 debug_set_level(loglevel);
3282 getmainconfig(configfile ? configfile : CONFIG_MAIN);
3284 options.loglevel = loglevel;
3285 else if (options.loglevel)
3286 debug_set_level(options.loglevel);
3288 debug_set_destination(options.logdestination ? options.logdestination : "x-syslog:///");
3289 free(options.logdestination);
3291 if (!list_first(clconfs))
3292 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
3293 if (!list_first(srvconfs))
3294 debugx(1, DBG_ERR, "No servers configured, nothing to do, exiting");
3295 if (!list_first(realms))
3296 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
3299 debugx(0, DBG_ERR, "All OK so far; exiting since only pretending");
3301 if (!foreground && (daemon(0, 0) < 0))
3302 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
3304 debug(DBG_INFO, "radsecproxy 1.1 starting");
3306 sigemptyset(&sigset);
3307 /* exit on all but SIGPIPE, ignore more? */
3308 sigaddset(&sigset, SIGPIPE);
3309 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
3310 pthread_create(&sigth, NULL, sighandler, NULL);
3312 if (client_udp_count) {
3313 udp_server_replyq = newreplyq();
3314 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
3315 debugx(1, DBG_ERR, "pthread_create failed");
3316 if (options.listenaccudp)
3317 if (pthread_create(&udpaccserverth, NULL, udpaccserverrd, NULL))
3318 debugx(1, DBG_ERR, "pthread_create failed");
3321 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
3322 addserver((struct clsrvconf *)entry->data);
3323 if (pthread_create(&((struct clsrvconf *)entry->data)->servers->clientth, NULL, clientwr,
3324 (void *)((struct clsrvconf *)entry->data)->servers))
3325 debugx(1, DBG_ERR, "pthread_create failed");
3327 /* srcudpres no longer needed, while srctcpres is needed later */
3329 freeaddrinfo(srcudpres);
3332 if (udp_client4_sock >= 0)
3333 if (pthread_create(&udpclient4rdth, NULL, udpclientrd, (void *)&udp_client4_sock))
3334 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3335 if (udp_client6_sock >= 0)
3336 if (pthread_create(&udpclient6rdth, NULL, udpclientrd, (void *)&udp_client6_sock))
3337 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3339 if (client_tls_count)
3340 return tlslistener();
3342 /* just hang around doing nothing, anything to do here? */