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>
42 #include <sys/types.h>
43 #include <arpa/inet.h>
47 #include <openssl/ssl.h>
48 #include <openssl/rand.h>
49 #include <openssl/err.h>
50 #include <openssl/md5.h>
51 #include <openssl/hmac.h>
52 #include <openssl/x509v3.h>
57 #include "radsecproxy.h"
59 static struct options options;
60 struct list *clconfs, *srvconfs, *realms, *tlsconfs, *rewriteconfs;
62 static int client_udp_count = 0;
63 static int client_tls_count = 0;
64 static int server_udp_count = 0;
65 static int server_tls_count = 0;
67 static struct addrinfo *srcudpres = NULL;
68 static struct addrinfo *srctcpres = NULL;
70 static struct replyq *udp_server_replyq = NULL;
71 static int udp_server_sock = -1;
72 static int udp_accserver_sock = -1;
73 static int udp_client4_sock = -1;
74 static int udp_client6_sock = -1;
75 static pthread_mutex_t *ssl_locks;
76 static long *ssl_lock_count;
80 /* minimum required declarations to avoid reordering code */
81 void adddynamicrealmserver(struct realm *realm, struct clsrvconf *conf, char *id);
83 /* callbacks for making OpenSSL thread safe */
84 unsigned long ssl_thread_id() {
85 return (unsigned long)pthread_self();
88 void ssl_locking_callback(int mode, int type, const char *file, int line) {
89 if (mode & CRYPTO_LOCK) {
90 pthread_mutex_lock(&ssl_locks[type]);
91 ssl_lock_count[type]++;
93 pthread_mutex_unlock(&ssl_locks[type]);
96 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
97 int pwdlen = strlen(userdata);
98 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
100 memcpy(buf, userdata, pwdlen);
104 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
109 err_cert = X509_STORE_CTX_get_current_cert(ctx);
110 err = X509_STORE_CTX_get_error(ctx);
111 depth = X509_STORE_CTX_get_error_depth(ctx);
113 if (depth > MAX_CERT_DEPTH) {
115 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
116 X509_STORE_CTX_set_error(ctx, err);
120 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
121 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
124 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
125 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
126 debug(DBG_WARN, "\tIssuer=%s", buf);
128 case X509_V_ERR_CERT_NOT_YET_VALID:
129 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
130 debug(DBG_WARN, "\tCertificate not yet valid");
132 case X509_V_ERR_CERT_HAS_EXPIRED:
133 debug(DBG_WARN, "Certificate has expired");
135 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
136 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
141 printf("certificate verify returns %d\n", ok);
146 int resolvepeer(struct clsrvconf *conf, int ai_flags) {
147 struct addrinfo hints, *addrinfo, *res;
151 slash = conf->host ? strchr(conf->host, '/') : NULL;
155 debug(DBG_WARN, "resolvepeer: prefix length must be specified after the / in %s", conf->host);
159 if (*s < '0' || *s > '9') {
160 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
163 plen = atoi(slash + 1);
164 if (plen < 0 || plen > 128) {
165 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
170 memset(&hints, 0, sizeof(hints));
171 hints.ai_socktype = (conf->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
172 hints.ai_family = AF_UNSPEC;
173 hints.ai_flags = ai_flags;
174 if (!conf->host && !conf->port) {
175 /* getaddrinfo() doesn't like host and port to be NULL */
176 if (getaddrinfo(conf->host, DEFAULT_UDP_PORT, &hints, &addrinfo)) {
177 debug(DBG_WARN, "resolvepeer: can't resolve (null) port (null)");
180 for (res = addrinfo; res; res = res->ai_next) {
181 switch (res->ai_family) {
183 ((struct sockaddr_in *)res->ai_addr)->sin_port = 0;
186 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = 0;
192 hints.ai_flags |= AI_NUMERICHOST;
193 if (getaddrinfo(conf->host, conf->port, &hints, &addrinfo)) {
194 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
199 switch (addrinfo->ai_family) {
202 debug(DBG_WARN, "resolvepeer: prefix length must be <= 32 in %s", conf->host);
203 freeaddrinfo(addrinfo);
210 debug(DBG_WARN, "resolvepeer: prefix must be IPv4 or IPv6 in %s", conf->host);
211 freeaddrinfo(addrinfo);
214 conf->prefixlen = plen;
216 conf->prefixlen = 255;
219 freeaddrinfo(conf->addrinfo);
220 conf->addrinfo = addrinfo;
224 int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
226 struct addrinfo *res;
228 for (res = addrinfo; res; res = res->ai_next) {
229 if (family != AF_UNSPEC && family != res->ai_family)
231 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
233 debug(DBG_WARN, "bindtoaddr: socket failed");
237 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
240 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
243 if (!bind(s, res->ai_addr, res->ai_addrlen))
245 debug(DBG_WARN, "bindtoaddr: bind failed");
251 char *parsehostport(char *s, struct clsrvconf *conf, char *default_port) {
256 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
260 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
262 debugx(1, DBG_ERR, "no ] matching initial [");
266 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
269 debugx(1, DBG_ERR, "missing host/address");
271 conf->host = stringcopy(field, p - field);
274 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
275 debugx(1, DBG_ERR, "unexpected character after ]");
278 /* port number or service name is specified */;
280 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
282 debugx(1, DBG_ERR, "syntax error, : but no following port");
283 conf->port = stringcopy(field, p - field);
285 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
289 struct clsrvconf *resolve_hostport(char type, char *lconf, char *default_port) {
290 struct clsrvconf *conf;
292 conf = malloc(sizeof(struct clsrvconf));
294 debugx(1, DBG_ERR, "malloc failed");
295 memset(conf, 0, sizeof(struct clsrvconf));
298 parsehostport(lconf, conf, default_port);
299 if (!strcmp(conf->host, "*")) {
304 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
305 if (!resolvepeer(conf, AI_PASSIVE))
306 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
310 void freeclsrvres(struct clsrvconf *res) {
314 freeaddrinfo(res->addrinfo);
318 int connecttcp(struct addrinfo *addrinfo) {
320 struct addrinfo *res;
323 for (res = addrinfo; res; res = res->ai_next) {
324 s = bindtoaddr(srctcpres, res->ai_family, 1, 1);
326 debug(DBG_WARN, "connecttoserver: socket failed");
329 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
331 debug(DBG_WARN, "connecttoserver: connect failed");
338 /* returns 1 if the len first bits are equal, else 0 */
339 int prefixmatch(void *a1, void *a2, uint8_t len) {
340 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
342 if (l && memcmp(a1, a2, l))
347 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
350 /* check if conf has matching address */
351 struct clsrvconf *checkconfaddr(char type, struct sockaddr *addr, struct clsrvconf *conf) {
352 struct sockaddr_in6 *sa6 = NULL;
353 struct in_addr *a4 = NULL;
354 struct addrinfo *res;
356 if (addr->sa_family == AF_INET6) {
357 sa6 = (struct sockaddr_in6 *)addr;
358 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
359 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
363 a4 = &((struct sockaddr_in *)addr)->sin_addr;
365 if (conf->type == type) {
366 if (conf->prefixlen == 255) {
367 for (res = conf->addrinfo; res; res = res->ai_next)
368 if ((a4 && res->ai_family == AF_INET &&
369 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
370 (sa6 && res->ai_family == AF_INET6 &&
371 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
374 res = conf->addrinfo;
376 ((a4 && res->ai_family == AF_INET &&
377 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
378 (sa6 && res->ai_family == AF_INET6 &&
379 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
386 /* returns next config with matching address, or NULL */
387 struct clsrvconf *find_conf(char type, struct sockaddr *addr, struct list *confs, struct list_node **cur) {
388 struct sockaddr_in6 *sa6 = NULL;
389 struct in_addr *a4 = NULL;
390 struct addrinfo *res;
391 struct list_node *entry;
392 struct clsrvconf *conf;
394 if (addr->sa_family == AF_INET6) {
395 sa6 = (struct sockaddr_in6 *)addr;
396 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
397 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
401 a4 = &((struct sockaddr_in *)addr)->sin_addr;
403 for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) {
404 conf = (struct clsrvconf *)entry->data;
405 if (conf->type == type) {
406 if (conf->prefixlen == 255) {
407 for (res = conf->addrinfo; res; res = res->ai_next)
408 if ((a4 && res->ai_family == AF_INET &&
409 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
410 (sa6 && res->ai_family == AF_INET6 &&
411 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16))) {
417 res = conf->addrinfo;
419 ((a4 && res->ai_family == AF_INET &&
420 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
421 (sa6 && res->ai_family == AF_INET6 &&
422 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen)))) {
433 struct replyq *newreplyq() {
434 struct replyq *replyq;
436 replyq = malloc(sizeof(struct replyq));
438 debugx(1, DBG_ERR, "malloc failed");
439 replyq->replies = list_create();
440 if (!replyq->replies)
441 debugx(1, DBG_ERR, "malloc failed");
442 pthread_mutex_init(&replyq->mutex, NULL);
443 pthread_cond_init(&replyq->cond, NULL);
447 struct client *addclient(struct clsrvconf *conf) {
448 struct client *new = malloc(sizeof(struct client));
451 debug(DBG_ERR, "malloc failed");
454 if (!conf->clients) {
455 conf->clients = list_create();
456 if (!conf->clients) {
457 debug(DBG_ERR, "malloc failed");
462 memset(new, 0, sizeof(struct client));
464 new->replyq = conf->type == 'T' ? newreplyq() : udp_server_replyq;
466 list_push(conf->clients, new);
470 void removeclient(struct client *client) {
471 struct list_node *entry;
473 if (!client || !client->conf->clients)
476 pthread_mutex_lock(&client->replyq->mutex);
477 for (entry = list_first(client->replyq->replies); entry; entry = list_next(entry))
478 free(((struct reply *)entry)->buf);
479 list_destroy(client->replyq->replies);
480 pthread_cond_destroy(&client->replyq->cond);
481 pthread_mutex_unlock(&client->replyq->mutex);
482 pthread_mutex_destroy(&client->replyq->mutex);
483 list_removedata(client->conf->clients, client);
487 void removeclientrqs(struct client *client) {
488 struct list_node *entry;
489 struct server *server;
493 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
494 server = ((struct clsrvconf *)entry->data)->servers;
495 pthread_mutex_lock(&server->newrq_mutex);
496 for (i = 0; i < MAX_REQUESTS; i++) {
497 rq = server->requests + i;
498 if (rq->from == client)
501 pthread_mutex_unlock(&server->newrq_mutex);
505 void freeserver(struct server *server, uint8_t destroymutex) {
509 free(server->requests);
511 pthread_mutex_destroy(&server->lock);
512 pthread_cond_destroy(&server->newrq_cond);
513 pthread_mutex_destroy(&server->newrq_mutex);
518 int addserver(struct clsrvconf *conf) {
519 struct clsrvconf *res;
522 debug(DBG_ERR, "addserver: currently works with just one server per conf");
525 conf->servers = malloc(sizeof(struct server));
526 if (!conf->servers) {
527 debug(DBG_ERR, "malloc failed");
530 memset(conf->servers, 0, sizeof(struct server));
531 conf->servers->conf = conf;
533 if (conf->type == 'U') {
535 res = resolve_hostport('U', options.sourceudp, NULL);
536 srcudpres = res->addrinfo;
537 res->addrinfo = NULL;
540 switch (conf->addrinfo->ai_family) {
542 if (udp_client4_sock < 0) {
543 udp_client4_sock = bindtoaddr(srcudpres, AF_INET, 0, 1);
544 if (udp_client4_sock < 0)
545 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
547 conf->servers->sock = udp_client4_sock;
550 if (udp_client6_sock < 0) {
551 udp_client6_sock = bindtoaddr(srcudpres, AF_INET6, 0, 1);
552 if (udp_client6_sock < 0)
553 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
555 conf->servers->sock = udp_client6_sock;
558 debugx(1, DBG_ERR, "addserver: unsupported address family");
563 res = resolve_hostport('T', options.sourcetcp, NULL);
564 srctcpres = res->addrinfo;
565 res->addrinfo = NULL;
568 conf->servers->sock = -1;
571 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct request));
572 if (!conf->servers->requests) {
573 debug(DBG_ERR, "malloc failed");
576 if (pthread_mutex_init(&conf->servers->lock, NULL)) {
577 debug(DBG_ERR, "mutex init failed");
580 conf->servers->newrq = 0;
581 if (pthread_mutex_init(&conf->servers->newrq_mutex, NULL)) {
582 debug(DBG_ERR, "mutex init failed");
583 pthread_mutex_destroy(&conf->servers->lock);
586 if (pthread_cond_init(&conf->servers->newrq_cond, NULL)) {
587 debug(DBG_ERR, "mutex init failed");
588 pthread_mutex_destroy(&conf->servers->newrq_mutex);
589 pthread_mutex_destroy(&conf->servers->lock);
596 freeserver(conf->servers, 0);
597 conf->servers = NULL;
601 /* exactly one of client and server must be non-NULL */
602 /* should probably take peer list (client(s) or server(s)) as argument instead */
603 /* if *peer == NULL we return who we received from, else require it to be from peer */
604 /* return from in sa if not NULL */
605 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
607 unsigned char buf[65536], *rad;
608 struct sockaddr_storage from;
609 socklen_t fromlen = sizeof(from);
611 struct list_node *node;
614 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
616 debug(DBG_WARN, "radudpget: recv failed");
619 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
622 debug(DBG_WARN, "radudpget: packet too small");
628 debug(DBG_WARN, "radudpget: length too small");
633 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
637 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
641 p = checkconfaddr('U', (struct sockaddr *)&from, (*client)->conf);
643 p = find_conf('U', (struct sockaddr *)&from, clconfs, NULL);
646 p = checkconfaddr('U', (struct sockaddr *)&from, (*server)->conf);
648 p = find_conf('U', (struct sockaddr *)&from, srvconfs, NULL);
651 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer %s, ignoring", addr2string((struct sockaddr *)&from, fromlen));
657 debug(DBG_ERR, "radudpget: malloc failed");
661 if (client && !*client) {
662 node = list_first(p->clients);
663 *client = node ? (struct client *)node->data : addclient(p);
668 } else if (server && !*server)
669 *server = p->servers;
673 memcpy(rad, buf, len);
679 int subjectaltnameaddr(X509 *cert, int family, struct in6_addr *addr) {
680 int loc, i, l, n, r = 0;
683 STACK_OF(GENERAL_NAME) *alt;
686 debug(DBG_DBG, "subjectaltnameaddr");
688 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
692 ex = X509_get_ext(cert, loc);
693 alt = X509V3_EXT_d2i(ex);
697 n = sk_GENERAL_NAME_num(alt);
698 for (i = 0; i < n; i++) {
699 gn = sk_GENERAL_NAME_value(alt, i);
700 if (gn->type != GEN_IPADD)
703 v = (char *)ASN1_STRING_data(gn->d.ia5);
704 l = ASN1_STRING_length(gn->d.ia5);
705 if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
706 && !memcmp(v, &addr, l)) {
711 GENERAL_NAMES_free(alt);
715 int cnregexp(X509 *cert, char *exact, regex_t *regex) {
722 nm = X509_get_subject_name(cert);
725 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
728 e = X509_NAME_get_entry(nm, loc);
729 t = X509_NAME_ENTRY_get_data(e);
730 v = (char *) ASN1_STRING_data(t);
731 l = ASN1_STRING_length(t);
735 if (l == strlen(exact) && !strncasecmp(exact, v, l))
738 s = stringcopy((char *)v, l);
740 debug(DBG_ERR, "malloc failed");
743 if (regexec(regex, s, 0, NULL, 0)) {
754 int subjectaltnameregexp(X509 *cert, int type, char *exact, regex_t *regex) {
755 int loc, i, l, n, r = 0;
758 STACK_OF(GENERAL_NAME) *alt;
761 debug(DBG_DBG, "subjectaltnameregexp");
763 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
767 ex = X509_get_ext(cert, loc);
768 alt = X509V3_EXT_d2i(ex);
772 n = sk_GENERAL_NAME_num(alt);
773 for (i = 0; i < n; i++) {
774 gn = sk_GENERAL_NAME_value(alt, i);
775 if (gn->type != type)
778 v = (char *)ASN1_STRING_data(gn->d.ia5);
779 l = ASN1_STRING_length(gn->d.ia5);
783 printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
786 if (memcmp(v, exact, l))
789 s = stringcopy((char *)v, l);
791 debug(DBG_ERR, "malloc failed");
794 if (regexec(regex, s, 0, NULL, 0)) {
803 GENERAL_NAMES_free(alt);
807 X509 *verifytlscert(SSL *ssl) {
811 if (SSL_get_verify_result(ssl) != X509_V_OK) {
812 debug(DBG_ERR, "verifytlscert: basic validation failed");
813 while ((error = ERR_get_error()))
814 debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
818 cert = SSL_get_peer_certificate(ssl);
820 debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
824 int verifyconfcert(X509 *cert, struct clsrvconf *conf) {
826 uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
827 struct in6_addr addr;
829 if (conf->certnamecheck && conf->prefixlen == 255) {
830 if (inet_pton(AF_INET, conf->host, &addr))
832 else if (inet_pton(AF_INET6, conf->host, &addr))
835 r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, conf->host, NULL);
838 debug(DBG_WARN, "verifyconfcert: No subjectaltname matching %s %s", type ? "address" : "host", conf->host);
841 debug(DBG_DBG, "verifyconfcert: Found subjectaltname matching %s %s", type ? "address" : "host", conf->host);
843 if (!cnregexp(cert, conf->host, NULL)) {
844 debug(DBG_WARN, "verifyconfcert: cn not matching host %s", conf->host);
847 debug(DBG_DBG, "verifyconfcert: Found cn matching host %s", conf->host);
850 if (conf->certcnregex) {
851 if (cnregexp(cert, NULL, conf->certcnregex) < 1) {
852 debug(DBG_WARN, "verifyconfcert: CN not matching regex");
855 debug(DBG_DBG, "verifyconfcert: CN matching regex");
857 if (conf->certuriregex) {
858 if (subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex) < 1) {
859 debug(DBG_WARN, "verifyconfcert: subjectaltname URI not matching regex");
862 debug(DBG_DBG, "verifyconfcert: subjectaltname URI matching regex");
867 void tlsconnect(struct server *server, struct timeval *when, char *text) {
872 debug(DBG_DBG, "tlsconnect called from %s", text);
873 pthread_mutex_lock(&server->lock);
874 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
875 /* already reconnected, nothing to do */
876 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
877 pthread_mutex_unlock(&server->lock);
881 debug(DBG_DBG, "tlsconnect %s", text);
884 gettimeofday(&now, NULL);
885 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
886 if (server->connectionok) {
887 server->connectionok = 0;
889 } else if (elapsed < 1)
891 else if (elapsed < 60) {
892 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
894 } else if (elapsed < 100000) {
895 debug(DBG_INFO, "tlsconnect: sleeping %ds", 60);
898 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
899 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->conf->host, server->conf->port);
900 if (server->sock >= 0)
902 if ((server->sock = connecttcp(server->conf->addrinfo)) < 0) {
903 debug(DBG_ERR, "tlsconnect: connecttcp failed");
907 SSL_free(server->ssl);
908 server->ssl = SSL_new(server->conf->ssl_ctx);
909 SSL_set_fd(server->ssl, server->sock);
910 if (SSL_connect(server->ssl) <= 0)
912 cert = verifytlscert(server->ssl);
915 if (verifyconfcert(cert, server->conf)) {
921 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->conf->host, server->conf->port);
922 gettimeofday(&server->lastconnecttry, NULL);
923 pthread_mutex_unlock(&server->lock);
926 unsigned char *radtlsget(SSL *ssl) {
928 unsigned char buf[4], *rad;
931 for (total = 0; total < 4; total += cnt) {
932 cnt = SSL_read(ssl, buf + total, 4 - total);
934 debug(DBG_ERR, "radtlsget: connection lost");
935 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
936 /* remote end sent close_notify, send one back */
946 debug(DBG_ERR, "radtlsget: malloc failed");
951 for (; total < len; total += cnt) {
952 cnt = SSL_read(ssl, rad + total, len - total);
954 debug(DBG_ERR, "radtlsget: connection lost");
955 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
956 /* remote end sent close_notify, send one back */
968 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
971 debug(DBG_DBG, "radtlsget: got %d bytes", total);
975 int clientradputudp(struct server *server, unsigned char *rad) {
977 struct sockaddr_storage sa;
978 struct sockaddr *sap;
979 struct clsrvconf *conf = server->conf;
980 in_port_t *port = NULL;
984 if (*rad == RAD_Accounting_Request) {
985 sap = (struct sockaddr *)&sa;
986 memcpy(sap, conf->addrinfo->ai_addr, conf->addrinfo->ai_addrlen);
988 sap = conf->addrinfo->ai_addr;
990 switch (sap->sa_family) {
992 port = &((struct sockaddr_in *)sap)->sin_port;
995 port = &((struct sockaddr_in6 *)sap)->sin6_port;
1001 if (*rad == RAD_Accounting_Request)
1002 *port = htons(ntohs(*port) + 1);
1004 if (sendto(server->sock, rad, len, 0, sap, conf->addrinfo->ai_addrlen) >= 0) {
1005 debug(DBG_DBG, "clienradputudp: sent UDP of length %d to %s port %d", len, conf->host, ntohs(*port));
1009 debug(DBG_WARN, "clientradputudp: send failed");
1013 int clientradputtls(struct server *server, unsigned char *rad) {
1016 unsigned long error;
1017 struct timeval lastconnecttry;
1018 struct clsrvconf *conf = server->conf;
1021 lastconnecttry = server->lastconnecttry;
1022 while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
1023 while ((error = ERR_get_error()))
1024 debug(DBG_ERR, "clientradputtls: TLS: %s", ERR_error_string(error, NULL));
1025 tlsconnect(server, &lastconnecttry, "clientradputtls");
1026 lastconnecttry = server->lastconnecttry;
1029 server->connectionok = 1;
1030 debug(DBG_DBG, "clientradputtls: Sent %d bytes, Radius packet of length %d to TLS peer %s", cnt, len, conf->host);
1034 int clientradput(struct server *server, unsigned char *rad) {
1035 switch (server->conf->type) {
1037 return clientradputudp(server, rad);
1039 return clientradputtls(server, rad);
1044 int radsign(unsigned char *rad, unsigned char *sec) {
1045 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1046 static unsigned char first = 1;
1047 static EVP_MD_CTX mdctx;
1048 unsigned int md_len;
1051 pthread_mutex_lock(&lock);
1053 EVP_MD_CTX_init(&mdctx);
1057 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1058 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
1059 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1060 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
1062 pthread_mutex_unlock(&lock);
1066 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
1067 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1068 static unsigned char first = 1;
1069 static EVP_MD_CTX mdctx;
1070 unsigned char hash[EVP_MAX_MD_SIZE];
1074 pthread_mutex_lock(&lock);
1076 EVP_MD_CTX_init(&mdctx);
1082 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1083 EVP_DigestUpdate(&mdctx, rad, 4) &&
1084 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
1085 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
1086 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1087 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
1089 !memcmp(hash, rad + 4, 16));
1090 pthread_mutex_unlock(&lock);
1094 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
1095 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1096 static unsigned char first = 1;
1097 static HMAC_CTX hmacctx;
1098 unsigned int md_len;
1099 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
1101 pthread_mutex_lock(&lock);
1103 HMAC_CTX_init(&hmacctx);
1107 memcpy(auth, authattr, 16);
1108 memset(authattr, 0, 16);
1110 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1111 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1112 HMAC_Final(&hmacctx, hash, &md_len);
1113 memcpy(authattr, auth, 16);
1115 debug(DBG_WARN, "message auth computation failed");
1116 pthread_mutex_unlock(&lock);
1120 if (memcmp(auth, hash, 16)) {
1121 debug(DBG_WARN, "message authenticator, wrong value");
1122 pthread_mutex_unlock(&lock);
1126 pthread_mutex_unlock(&lock);
1130 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
1131 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1132 static unsigned char first = 1;
1133 static HMAC_CTX hmacctx;
1134 unsigned int md_len;
1139 pthread_mutex_lock(&lock);
1141 HMAC_CTX_init(&hmacctx);
1145 memset(authattrval, 0, 16);
1147 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1148 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1149 HMAC_Final(&hmacctx, authattrval, &md_len);
1151 debug(DBG_WARN, "message auth computation failed");
1152 pthread_mutex_unlock(&lock);
1156 pthread_mutex_unlock(&lock);
1160 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
1161 while (length > 1) {
1162 if (ATTRTYPE(attrs) == type)
1164 length -= ATTRLEN(attrs);
1165 attrs += ATTRLEN(attrs);
1170 void freerqdata(struct request *rq) {
1171 if (rq->origusername)
1172 free(rq->origusername);
1177 void sendrq(struct server *to, struct request *rq) {
1181 pthread_mutex_lock(&to->newrq_mutex);
1182 /* might simplify if only try nextid, might be ok */
1183 for (i = to->nextid; i < MAX_REQUESTS; i++)
1184 if (!to->requests[i].buf)
1186 if (i == MAX_REQUESTS) {
1187 for (i = 0; i < to->nextid; i++)
1188 if (!to->requests[i].buf)
1190 if (i == to->nextid) {
1191 debug(DBG_WARN, "No room in queue, dropping request");
1193 pthread_mutex_unlock(&to->newrq_mutex);
1198 rq->buf[1] = (char)i;
1200 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
1201 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->conf->secret)) {
1203 pthread_mutex_unlock(&to->newrq_mutex);
1207 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->host);
1208 to->requests[i] = *rq;
1213 debug(DBG_DBG, "signalling client writer");
1214 pthread_cond_signal(&to->newrq_cond);
1216 pthread_mutex_unlock(&to->newrq_mutex);
1219 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
1220 struct reply *reply;
1223 if (!radsign(buf, (unsigned char *)to->conf->secret)) {
1225 debug(DBG_WARN, "sendreply: failed to sign message");
1229 reply = malloc(sizeof(struct reply));
1232 debug(DBG_ERR, "sendreply: malloc failed");
1235 memset(reply, 0, sizeof(struct reply));
1238 reply->tosa = *tosa;
1240 pthread_mutex_lock(&to->replyq->mutex);
1242 first = list_first(to->replyq->replies) == NULL;
1244 if (!list_push(to->replyq->replies, reply)) {
1245 pthread_mutex_unlock(&to->replyq->mutex);
1248 debug(DBG_ERR, "sendreply: malloc failed");
1253 debug(DBG_DBG, "signalling server writer");
1254 pthread_cond_signal(&to->replyq->cond);
1256 pthread_mutex_unlock(&to->replyq->mutex);
1259 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1260 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1261 static unsigned char first = 1;
1262 static EVP_MD_CTX mdctx;
1263 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1264 unsigned int md_len;
1265 uint8_t i, offset = 0, out[128];
1267 pthread_mutex_lock(&lock);
1269 EVP_MD_CTX_init(&mdctx);
1275 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1276 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1277 !EVP_DigestUpdate(&mdctx, input, 16) ||
1278 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1280 pthread_mutex_unlock(&lock);
1283 for (i = 0; i < 16; i++)
1284 out[offset + i] = hash[i] ^ in[offset + i];
1285 input = out + offset - 16;
1290 memcpy(in, out, len);
1291 pthread_mutex_unlock(&lock);
1295 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1296 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1297 static unsigned char first = 1;
1298 static EVP_MD_CTX mdctx;
1299 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1300 unsigned int md_len;
1301 uint8_t i, offset = 0, out[128];
1303 pthread_mutex_lock(&lock);
1305 EVP_MD_CTX_init(&mdctx);
1311 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1312 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1313 !EVP_DigestUpdate(&mdctx, input, 16) ||
1314 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1316 pthread_mutex_unlock(&lock);
1319 for (i = 0; i < 16; i++)
1320 out[offset + i] = hash[i] ^ in[offset + i];
1321 input = in + offset;
1326 memcpy(in, out, len);
1327 pthread_mutex_unlock(&lock);
1331 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1332 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1333 static unsigned char first = 1;
1334 static EVP_MD_CTX mdctx;
1335 unsigned char hash[EVP_MAX_MD_SIZE];
1336 unsigned int md_len;
1339 pthread_mutex_lock(&lock);
1341 EVP_MD_CTX_init(&mdctx);
1346 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
1347 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
1348 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
1351 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1352 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1353 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1354 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1355 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1356 pthread_mutex_unlock(&lock);
1361 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1364 for (i = 0; i < 16; i++)
1367 for (offset = 16; offset < len; offset += 16) {
1369 printf("text + offset - 16 c(%d): ", offset / 16);
1370 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1372 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1373 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1374 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1375 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1377 pthread_mutex_unlock(&lock);
1381 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1384 for (i = 0; i < 16; i++)
1385 text[offset + i] ^= hash[i];
1389 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
1392 pthread_mutex_unlock(&lock);
1396 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1397 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1398 static unsigned char first = 1;
1399 static EVP_MD_CTX mdctx;
1400 unsigned char hash[EVP_MAX_MD_SIZE];
1401 unsigned int md_len;
1405 pthread_mutex_lock(&lock);
1407 EVP_MD_CTX_init(&mdctx);
1412 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
1413 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
1414 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
1417 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1418 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1419 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1420 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1421 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1422 pthread_mutex_unlock(&lock);
1427 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1430 for (i = 0; i < 16; i++)
1431 plain[i] = text[i] ^ hash[i];
1433 for (offset = 16; offset < len; offset += 16) {
1435 printf("text + offset - 16 c(%d): ", offset / 16);
1436 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1438 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1439 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1440 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1441 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1443 pthread_mutex_unlock(&lock);
1447 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1450 for (i = 0; i < 16; i++)
1451 plain[offset + i] = text[offset + i] ^ hash[i];
1454 memcpy(text, plain, len);
1456 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
1459 pthread_mutex_unlock(&lock);
1463 struct realm *id2realm(struct list *realmlist, char *id) {
1464 struct list_node *entry;
1465 struct realm *realm, *subrealm = NULL;
1467 /* need to do locking for subrealms and check subrealm timers */
1468 for (entry = list_first(realmlist); entry; entry = list_next(entry)) {
1469 realm = (struct realm *)entry->data;
1470 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
1471 pthread_mutex_lock(&realm->subrealms_mutex);
1472 if (realm->subrealms)
1473 subrealm = id2realm(realm->subrealms, id);
1474 pthread_mutex_unlock(&realm->subrealms_mutex);
1475 return subrealm ? subrealm : realm;
1481 int rqinqueue(struct server *to, struct client *from, uint8_t id, uint8_t code) {
1482 struct request *rq = to->requests, *end;
1484 pthread_mutex_lock(&to->newrq_mutex);
1485 for (end = rq + MAX_REQUESTS; rq < end; rq++)
1486 if (rq->buf && !rq->received && rq->origid == id && rq->from == from && *rq->buf == code)
1488 pthread_mutex_unlock(&to->newrq_mutex);
1493 int attrvalidate(unsigned char *attrs, int length) {
1494 while (length > 1) {
1495 if (ATTRLEN(attrs) < 2) {
1496 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1499 length -= ATTRLEN(attrs);
1501 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1504 attrs += ATTRLEN(attrs);
1507 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1511 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1512 if (len < 16 || len > 128 || len % 16) {
1513 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1517 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1518 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1522 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
1524 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1525 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1531 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1534 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1535 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1538 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1539 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1545 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1546 char *oldsecret, char *newsecret) {
1547 unsigned char *attr;
1549 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1550 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1551 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1557 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint8_t subattr) {
1561 for (; attrs[0]; attrs += 2)
1562 if (attrs[0] == vendor && attrs[1] == subattr)
1567 int dovendorrewrite(uint8_t *attrs, uint16_t length, uint32_t *removevendorattrs) {
1568 uint8_t alen, sublen, rmlen = 0;
1569 uint32_t vendor = *(uint32_t *)ATTRVAL(attrs);
1572 if (!removevendorattrs)
1575 while (*removevendorattrs && *removevendorattrs != vendor)
1576 removevendorattrs += 2;
1577 if (!*removevendorattrs)
1580 alen = ATTRLEN(attrs);
1582 if (findvendorsubattr(removevendorattrs, vendor, -1)) {
1583 /* remove entire vendor attribute */
1584 memmove(attrs, attrs + alen, length - alen);
1589 subattrs = ATTRVAL(attrs) + 4;
1591 if (!attrvalidate(subattrs, sublen)) {
1592 debug(DBG_WARN, "dovendorrewrite: vendor attribute validation failed, no rewrite");
1597 while (sublen > 1) {
1598 alen = ATTRLEN(subattrs);
1601 if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) {
1602 memmove(subattrs, subattrs + alen, length);
1608 ATTRLEN(attrs) -= rmlen;
1612 void dorewrite(uint8_t *buf, struct rewrite *rewrite) {
1613 uint8_t *attrs, alen;
1614 uint16_t len, rmlen = 0;
1616 if (!rewrite || (!rewrite->removeattrs && !rewrite->removevendorattrs))
1619 len = RADLEN(buf) - 20;
1622 alen = ATTRLEN(attrs);
1624 if (rewrite->removeattrs && strchr((char *)rewrite->removeattrs, ATTRTYPE(attrs))) {
1625 memmove(attrs, attrs + alen, len);
1627 } else if (ATTRTYPE(attrs) == RAD_Attr_Vendor_Specific && rewrite->removevendorattrs)
1628 rmlen += dovendorrewrite(attrs, len, rewrite->removevendorattrs);
1633 ((uint16_t *)buf)[1] = htons(RADLEN(buf) - rmlen);
1636 /* returns a pointer to the resized attribute value */
1637 uint8_t *resizeattr(uint8_t **buf, uint8_t newvallen, uint8_t type) {
1638 uint8_t *attrs, *attr, vallen;
1642 len = RADLEN(*buf) - 20;
1645 attr = attrget(attrs, len, type);
1649 vallen = ATTRVALLEN(attr);
1650 if (vallen == newvallen)
1653 len += newvallen - vallen;
1654 if (newvallen > vallen) {
1655 new = realloc(*buf, len + 20);
1657 debug(DBG_ERR, "resizeattr: malloc failed");
1666 memmove(attr + 2 + newvallen, attr + 2 + vallen, len - (attr - attrs + newvallen));
1667 attr[1] = newvallen + 2;
1668 ((uint16_t *)*buf)[1] = htons(len + 20);
1672 int rewriteusername(struct request *rq, char *in) {
1673 size_t nmatch = 10, reslen = 0, start = 0;
1674 regmatch_t pmatch[10], *pfield;
1676 unsigned char *result;
1677 char *out = rq->from->conf->rewriteattrreplacement;
1679 if (regexec(rq->from->conf->rewriteattrregex, in, nmatch, pmatch, 0)) {
1680 debug(DBG_DBG, "rewriteattr: username not matching, no rewrite");
1684 rq->origusername = stringcopy(in, 0);
1685 if (!rq->origusername)
1688 for (i = start; out[i]; i++) {
1689 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1690 pfield = &pmatch[out[i + 1] - '0'];
1691 if (pfield->rm_so >= 0) {
1692 reslen += i - start + pfield->rm_eo - pfield->rm_so;
1698 reslen += i - start;
1700 result = resizeattr(&rq->buf, reslen, RAD_Attr_User_Name);
1706 for (i = start; out[i]; i++) {
1707 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1708 pfield = &pmatch[out[i + 1] - '0'];
1709 if (pfield->rm_so >= 0) {
1710 memcpy(result + reslen, out + start, i - start);
1711 reslen += i - start;
1712 memcpy(result + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1713 reslen += pfield->rm_eo - pfield->rm_so;
1720 memcpy(result + reslen, out + start, i - start);
1721 reslen += i - start;
1722 memcpy(in, result, reslen);
1727 const char *radmsgtype2string(uint8_t code) {
1728 static const char *rad_msg_names[] = {
1729 "", "Access-Request", "Access-Accept", "Access-Reject",
1730 "Accounting-Request", "Accounting-Response", "", "",
1731 "", "", "", "Access-Challenge",
1732 "Status-Server", "Status-Client"
1734 return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown";
1737 void acclog(unsigned char *attrs, int length, char *host) {
1738 unsigned char *attr;
1741 attr = attrget(attrs, length, RAD_Attr_User_Name);
1743 debug(DBG_INFO, "acclog: accounting-request from %s without username attribute", host);
1746 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1747 username[ATTRVALLEN(attr)] = '\0';
1748 debug(DBG_INFO, "acclog: accounting-request from %s with username: %s", host, username);
1751 void respondaccounting(struct request *rq) {
1752 unsigned char *resp;
1756 debug(DBG_ERR, "respondstatusserver: malloc failed");
1759 memcpy(resp, rq->buf, 20);
1760 resp[0] = RAD_Accounting_Response;
1763 debug(DBG_DBG, "respondaccounting: responding to %s", rq->from->conf->host);
1764 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1767 void respondstatusserver(struct request *rq) {
1768 unsigned char *resp;
1772 debug(DBG_ERR, "respondstatusserver: malloc failed");
1775 memcpy(resp, rq->buf, 20);
1776 resp[0] = RAD_Access_Accept;
1779 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->conf->host);
1780 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1783 void respondreject(struct request *rq, char *message) {
1784 unsigned char *resp;
1787 if (message && *message)
1788 len += 2 + strlen(message);
1792 debug(DBG_ERR, "respondreject: malloc failed");
1795 memcpy(resp, rq->buf, 20);
1796 resp[0] = RAD_Access_Reject;
1797 *(uint16_t *)(resp + 2) = htons(len);
1798 if (message && *message) {
1799 resp[20] = RAD_Attr_Reply_Message;
1800 resp[21] = len - 20;
1801 memcpy(resp + 22, message, len - 22);
1803 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1806 struct clsrvconf *choosesrvconf(struct list *srvconfs) {
1807 struct list_node *entry;
1808 struct clsrvconf *server, *best = NULL, *first = NULL;
1810 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1811 server = (struct clsrvconf *)entry->data;
1814 if (!server->servers->connectionok)
1816 if (!server->servers->loststatsrv)
1822 if (server->servers->loststatsrv < best->servers->loststatsrv)
1825 return best ? best : first;
1828 struct server *findserver(struct realm **realm, char *id, uint8_t acc) {
1829 struct clsrvconf *srvconf;
1831 *realm = id2realm(realms, id);
1834 debug(DBG_DBG, "found matching realm: %s", (*realm)->name);
1835 srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs);
1836 if (!acc && !srvconf->servers)
1837 adddynamicrealmserver(*realm, srvconf, id);
1838 return srvconf->servers;
1841 void radsrv(struct request *rq) {
1842 uint8_t code, id, *auth, *attrs, *attr;
1844 struct server *to = NULL;
1846 unsigned char newauth[16];
1847 struct realm *realm = NULL;
1849 code = *(uint8_t *)rq->buf;
1850 id = *(uint8_t *)(rq->buf + 1);
1851 len = RADLEN(rq->buf);
1852 auth = (uint8_t *)(rq->buf + 4);
1854 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1856 if (code != RAD_Access_Request && code != RAD_Status_Server && code != RAD_Accounting_Request) {
1857 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1862 attrs = rq->buf + 20;
1864 if (!attrvalidate(attrs, len)) {
1865 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1869 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1870 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(rq->buf, ATTRVAL(attr), rq->from->conf->secret))) {
1871 debug(DBG_WARN, "radsrv: message authentication failed");
1875 if (code == RAD_Status_Server) {
1876 respondstatusserver(rq);
1880 /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */
1882 if (rq->from->conf->rewrite) {
1883 dorewrite(rq->buf, rq->from->conf->rewrite);
1884 len = RADLEN(rq->buf) - 20;
1887 attr = attrget(attrs, len, RAD_Attr_User_Name);
1889 if (code == RAD_Accounting_Request) {
1890 acclog(attrs, len, rq->from->conf->host);
1891 respondaccounting(rq);
1893 debug(DBG_WARN, "radsrv: ignoring access request, no username attribute");
1896 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1897 username[ATTRVALLEN(attr)] = '\0';
1899 if (rq->from->conf->rewriteattrregex) {
1900 if (!rewriteusername(rq, username)) {
1901 debug(DBG_WARN, "radsrv: username malloc failed, ignoring request");
1904 len = RADLEN(rq->buf) - 20;
1905 auth = (uint8_t *)(rq->buf + 4);
1906 attrs = rq->buf + 20;
1909 if (rq->origusername)
1910 debug(DBG_DBG, "%s with username: %s (originally %s)", radmsgtype2string(code), username, rq->origusername);
1912 debug(DBG_DBG, "%s with username: %s", radmsgtype2string(code), username);
1914 to = findserver(&realm, username, code == RAD_Accounting_Request);
1916 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1920 if (realm->message && code == RAD_Access_Request) {
1921 debug(DBG_INFO, "radsrv: sending reject to %s for %s", rq->from->conf->host, username);
1922 respondreject(rq, realm->message);
1927 if (rqinqueue(to, rq->from, id, code)) {
1928 debug(DBG_INFO, "radsrv: already got %s from host %s with id %d, ignoring",
1929 radmsgtype2string(code), rq->from->conf->host, id);
1933 if (!RAND_bytes(newauth, 16)) {
1934 debug(DBG_WARN, "radsrv: failed to generate random auth");
1939 printfchars(NULL, "auth", "%02x ", auth, 16);
1942 attr = attrget(attrs, len, RAD_Attr_User_Password);
1944 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1945 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1949 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1951 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1952 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1957 memcpy(rq->origauth, auth, 16);
1958 memcpy(auth, newauth, 16);
1966 int replyh(struct server *server, unsigned char *buf) {
1967 struct client *from;
1970 unsigned char *messageauth, *subattrs, *attrs, *attr, *username;
1971 struct sockaddr_storage fromsa;
1974 server->connectionok = 1;
1975 server->loststatsrv = 0;
1977 i = buf[1]; /* i is the id */
1979 if (*buf != RAD_Access_Accept && *buf != RAD_Access_Reject && *buf != RAD_Access_Challenge
1980 && *buf != RAD_Accounting_Response) {
1981 debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(*buf));
1984 debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(*buf), i);
1986 rq = server->requests + i;
1988 pthread_mutex_lock(&server->newrq_mutex);
1989 if (!rq->buf || !rq->tries) {
1990 pthread_mutex_unlock(&server->newrq_mutex);
1991 debug(DBG_INFO, "replyh: no matching request sent with this id, ignoring reply");
1996 pthread_mutex_unlock(&server->newrq_mutex);
1997 debug(DBG_INFO, "replyh: already received, ignoring reply");
2001 if (!validauth(buf, rq->buf + 4, (unsigned char *)server->conf->secret)) {
2002 pthread_mutex_unlock(&server->newrq_mutex);
2003 debug(DBG_WARN, "replyh: invalid auth, ignoring reply");
2007 len = RADLEN(buf) - 20;
2010 if (!attrvalidate(attrs, len)) {
2011 pthread_mutex_unlock(&server->newrq_mutex);
2012 debug(DBG_WARN, "replyh: attribute validation failed, ignoring reply");
2016 /* Message Authenticator */
2017 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2019 if (ATTRVALLEN(messageauth) != 16) {
2020 pthread_mutex_unlock(&server->newrq_mutex);
2021 debug(DBG_WARN, "replyh: illegal message auth attribute length, ignoring reply");
2024 memcpy(tmp, buf + 4, 16);
2025 memcpy(buf + 4, rq->buf + 4, 16);
2026 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->conf->secret)) {
2027 pthread_mutex_unlock(&server->newrq_mutex);
2028 debug(DBG_WARN, "replyh: message authentication failed, ignoring reply");
2031 memcpy(buf + 4, tmp, 16);
2032 debug(DBG_DBG, "replyh: message auth ok");
2035 if (*rq->buf == RAD_Status_Server) {
2037 pthread_mutex_unlock(&server->newrq_mutex);
2038 debug(DBG_DBG, "replyh: got status server response from %s", server->conf->host);
2044 pthread_mutex_unlock(&server->newrq_mutex);
2045 debug(DBG_INFO, "replyh: client gone, ignoring reply");
2049 if (server->conf->rewrite) {
2050 dorewrite(buf, server->conf->rewrite);
2051 len = RADLEN(buf) - 20;
2055 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
2056 if (ATTRVALLEN(attr) <= 4)
2059 if (attr[2] != 0 || attr[3] != 0 || attr[4] != 1 || attr[5] != 55) /* 311 == MS */
2062 sublen = ATTRVALLEN(attr) - 4;
2063 subattrs = ATTRVAL(attr) + 4;
2064 if (!attrvalidate(subattrs, sublen) ||
2065 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
2066 rq, server->conf->secret, from->conf->secret) ||
2067 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
2068 rq, server->conf->secret, from->conf->secret))
2072 pthread_mutex_unlock(&server->newrq_mutex);
2073 debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply");
2077 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject || *buf == RAD_Accounting_Response) {
2078 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_User_Name);
2080 memcpy(tmp, ATTRVAL(attr), ATTRVALLEN(attr));
2081 tmp[ATTRVALLEN(attr)] = '\0';
2082 if (rq->origusername)
2083 debug(DBG_INFO, "%s for %s (originally %s) from %s", radmsgtype2string(*buf), tmp,
2084 rq->origusername, server->conf->host);
2086 debug(DBG_INFO, "%s for %s from %s", radmsgtype2string(*buf), tmp, server->conf->host);
2090 buf[1] = (char)rq->origid;
2091 memcpy(buf + 4, rq->origauth, 16);
2093 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
2096 if (rq->origusername) {
2097 username = resizeattr(&buf, strlen(rq->origusername), RAD_Attr_User_Name);
2099 pthread_mutex_unlock(&server->newrq_mutex);
2100 debug(DBG_WARN, "replyh: malloc failed, ignoring reply");
2103 memcpy(username, rq->origusername, strlen(rq->origusername));
2104 len = RADLEN(buf) - 20;
2107 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2111 if (!createmessageauth(buf, ATTRVAL(messageauth), from->conf->secret)) {
2112 pthread_mutex_unlock(&server->newrq_mutex);
2113 debug(DBG_WARN, "replyh: failed to create authenticator, malloc failed?, ignoring reply");
2116 debug(DBG_DBG, "replyh: computed messageauthattr");
2119 if (from->conf->type == 'U')
2120 fromsa = rq->fromsa;
2121 /* once we set received = 1, rq may be reused */
2124 debug(DBG_INFO, "replyh: passing reply to client %s", from->conf->name);
2125 sendreply(from, buf, from->conf->type == 'U' ? &fromsa : NULL);
2126 pthread_mutex_unlock(&server->newrq_mutex);
2130 void *udpclientrd(void *arg) {
2131 struct server *server;
2133 int *s = (int *)arg;
2137 buf = radudpget(*s, NULL, &server, NULL);
2138 if (!replyh(server, buf))
2143 void *tlsclientrd(void *arg) {
2144 struct server *server = (struct server *)arg;
2146 struct timeval lastconnecttry;
2149 /* yes, lastconnecttry is really necessary */
2150 lastconnecttry = server->lastconnecttry;
2151 buf = radtlsget(server->ssl);
2153 tlsconnect(server, &lastconnecttry, "clientrd");
2157 if (!replyh(server, buf))
2162 void *clientwr(void *arg) {
2163 struct server *server = (struct server *)arg;
2165 pthread_t tlsclientrdth;
2168 struct timeval now, lastsend;
2169 struct timespec timeout;
2170 struct request statsrvrq;
2171 unsigned char statsrvbuf[38];
2173 memset(&timeout, 0, sizeof(struct timespec));
2175 if (server->conf->statusserver) {
2176 memset(&statsrvrq, 0, sizeof(struct request));
2177 memset(statsrvbuf, 0, sizeof(statsrvbuf));
2178 statsrvbuf[0] = RAD_Status_Server;
2180 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
2181 statsrvbuf[21] = 18;
2182 gettimeofday(&lastsend, NULL);
2185 if (server->conf->type == 'U') {
2186 server->connectionok = 1;
2188 tlsconnect(server, NULL, "new client");
2189 server->connectionok = 1;
2190 if (pthread_create(&tlsclientrdth, NULL, tlsclientrd, (void *)server))
2191 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
2195 pthread_mutex_lock(&server->newrq_mutex);
2196 if (!server->newrq) {
2197 gettimeofday(&now, NULL);
2198 if (server->conf->statusserver) {
2199 /* random 0-7 seconds */
2200 RAND_bytes(&rnd, 1);
2202 if (!timeout.tv_sec || timeout.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
2203 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
2205 if (timeout.tv_sec) {
2206 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
2207 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
2210 debug(DBG_DBG, "clientwr: waiting for new request");
2211 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
2214 if (server->newrq) {
2215 debug(DBG_DBG, "clientwr: got new request");
2218 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
2219 pthread_mutex_unlock(&server->newrq_mutex);
2221 for (i = 0; i < MAX_REQUESTS; i++) {
2222 pthread_mutex_lock(&server->newrq_mutex);
2223 while (i < MAX_REQUESTS && !server->requests[i].buf)
2225 if (i == MAX_REQUESTS) {
2226 pthread_mutex_unlock(&server->newrq_mutex);
2229 rq = server->requests + i;
2232 debug(DBG_DBG, "clientwr: packet %d in queue is marked as received", i);
2234 debug(DBG_DBG, "clientwr: freeing received packet %d from queue", i);
2236 /* setting this to NULL means that it can be reused */
2239 pthread_mutex_unlock(&server->newrq_mutex);
2243 gettimeofday(&now, NULL);
2244 if (now.tv_sec < rq->expiry.tv_sec) {
2245 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2246 timeout.tv_sec = rq->expiry.tv_sec;
2247 pthread_mutex_unlock(&server->newrq_mutex);
2251 if (rq->tries == (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2252 ? 1 : REQUEST_RETRIES)) {
2253 debug(DBG_DBG, "clientwr: removing expired packet from queue");
2254 if (*rq->buf == RAD_Status_Server) {
2255 debug(DBG_WARN, "clientwr: no status server response, %s dead?", server->conf->host);
2256 if (server->loststatsrv < 255)
2257 server->loststatsrv++;
2260 /* setting this to NULL means that it can be reused */
2262 pthread_mutex_unlock(&server->newrq_mutex);
2265 pthread_mutex_unlock(&server->newrq_mutex);
2267 rq->expiry.tv_sec = now.tv_sec +
2268 (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2269 ? REQUEST_EXPIRY : REQUEST_EXPIRY / REQUEST_RETRIES);
2270 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2271 timeout.tv_sec = rq->expiry.tv_sec;
2273 clientradput(server, server->requests[i].buf);
2274 gettimeofday(&lastsend, NULL);
2276 if (server->conf->statusserver) {
2277 gettimeofday(&now, NULL);
2278 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
2279 if (!RAND_bytes(statsrvbuf + 4, 16)) {
2280 debug(DBG_WARN, "clientwr: failed to generate random auth");
2283 statsrvrq.buf = malloc(sizeof(statsrvbuf));
2284 if (!statsrvrq.buf) {
2285 debug(DBG_ERR, "clientwr: malloc failed");
2288 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
2289 debug(DBG_DBG, "clientwr: sending status server to %s", server->conf->host);
2290 lastsend.tv_sec = now.tv_sec;
2291 sendrq(server, &statsrvrq);
2297 void *udpserverwr(void *arg) {
2298 struct replyq *replyq = udp_server_replyq;
2299 struct reply *reply;
2302 pthread_mutex_lock(&replyq->mutex);
2303 while (!(reply = (struct reply *)list_shift(replyq->replies))) {
2304 debug(DBG_DBG, "udp server writer, waiting for signal");
2305 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2306 debug(DBG_DBG, "udp server writer, got signal");
2308 pthread_mutex_unlock(&replyq->mutex);
2310 if (sendto(udp_server_sock, reply->buf, RADLEN(reply->buf), 0,
2311 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
2312 debug(DBG_WARN, "sendudp: send failed");
2318 void *udpserverrd(void *arg) {
2320 pthread_t udpserverwrth;
2321 struct clsrvconf *listenres;
2323 listenres = resolve_hostport('U', options.listenudp, DEFAULT_UDP_PORT);
2324 if ((udp_server_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2325 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2327 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
2328 listenres->host ? listenres->host : "*", listenres->port);
2329 freeclsrvres(listenres);
2331 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
2332 debugx(1, DBG_ERR, "pthread_create failed");
2335 memset(&rq, 0, sizeof(struct request));
2336 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
2341 void *udpaccserverrd(void *arg) {
2343 struct clsrvconf *listenres;
2345 listenres = resolve_hostport('U', options.listenaccudp, DEFAULT_UDP_PORT);
2346 if ((udp_accserver_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2347 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2349 debug(DBG_WARN, "udpaccserverrd: listening for UDP on %s:%s",
2350 listenres->host ? listenres->host : "*", listenres->port);
2351 freeclsrvres(listenres);
2354 memset(&rq, 0, sizeof(struct request));
2355 rq.buf = radudpget(udp_accserver_sock, &rq.from, NULL, &rq.fromsa);
2356 if (*(uint8_t *)rq.buf == RAD_Accounting_Request) {
2360 debug(DBG_INFO, "udpaccserverrd: got something other than accounting-request, ignoring");
2365 void *tlsserverwr(void *arg) {
2367 unsigned long error;
2368 struct client *client = (struct client *)arg;
2369 struct replyq *replyq;
2370 struct reply *reply;
2372 debug(DBG_DBG, "tlsserverwr starting for %s", client->conf->host);
2373 replyq = client->replyq;
2375 pthread_mutex_lock(&replyq->mutex);
2376 while (!list_first(replyq->replies)) {
2378 debug(DBG_DBG, "tls server writer, waiting for signal");
2379 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2380 debug(DBG_DBG, "tls server writer, got signal");
2383 /* ssl might have changed while waiting */
2384 pthread_mutex_unlock(&replyq->mutex);
2385 debug(DBG_DBG, "tlsserverwr: exiting as requested");
2389 reply = (struct reply *)list_shift(replyq->replies);
2390 pthread_mutex_unlock(&replyq->mutex);
2391 cnt = SSL_write(client->ssl, reply->buf, RADLEN(reply->buf));
2393 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
2394 cnt, RADLEN(reply->buf));
2396 while ((error = ERR_get_error()))
2397 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
2403 void tlsserverrd(struct client *client) {
2405 pthread_t tlsserverwrth;
2407 debug(DBG_DBG, "tlsserverrd starting for %s", client->conf->host);
2409 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
2410 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
2415 memset(&rq, 0, sizeof(struct request));
2416 rq.buf = radtlsget(client->ssl);
2419 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->conf->host);
2424 debug(DBG_ERR, "tlsserverrd: connection lost");
2425 /* stop writer by setting ssl to NULL and give signal in case waiting for data */
2427 pthread_mutex_lock(&client->replyq->mutex);
2428 pthread_cond_signal(&client->replyq->cond);
2429 pthread_mutex_unlock(&client->replyq->mutex);
2430 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
2431 pthread_join(tlsserverwrth, NULL);
2432 removeclientrqs(client);
2433 debug(DBG_DBG, "tlsserverrd for %s exiting", client->conf->host);
2436 void *tlsservernew(void *arg) {
2438 struct sockaddr_storage from;
2439 size_t fromlen = sizeof(from);
2440 struct clsrvconf *conf;
2441 struct list_node *cur = NULL;
2444 unsigned long error;
2445 struct client *client;
2448 if (getpeername(s, (struct sockaddr *)&from, &fromlen)) {
2449 debug(DBG_DBG, "tlsserverrd: getpeername failed, exiting");
2452 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
2454 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2456 ssl = SSL_new(conf->ssl_ctx);
2459 if (SSL_accept(ssl) <= 0) {
2460 while ((error = ERR_get_error()))
2461 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
2462 debug(DBG_ERR, "SSL_accept failed");
2465 cert = verifytlscert(ssl);
2471 if (verifyconfcert(cert, conf)) {
2473 client = addclient(conf);
2476 tlsserverrd(client);
2477 removeclient(client);
2479 debug(DBG_WARN, "Failed to create new client instance");
2482 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2484 debug(DBG_WARN, "ignoring request, no matching TLS client");
2490 shutdown(s, SHUT_RDWR);
2496 pthread_t tlsserverth;
2498 struct sockaddr_storage from;
2499 size_t fromlen = sizeof(from);
2500 struct clsrvconf *listenres;
2502 listenres = resolve_hostport('T', options.listentcp, DEFAULT_TLS_PORT);
2503 if ((s = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2504 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
2506 debug(DBG_WARN, "listening for incoming TCP on %s:%s", listenres->host ? listenres->host : "*", listenres->port);
2507 freeclsrvres(listenres);
2511 snew = accept(s, (struct sockaddr *)&from, &fromlen);
2513 debug(DBG_WARN, "accept failed");
2516 if (pthread_create(&tlsserverth, NULL, tlsservernew, (void *)&snew)) {
2517 debug(DBG_ERR, "tlslistener: pthread_create failed");
2518 shutdown(snew, SHUT_RDWR);
2522 pthread_detach(tlsserverth);
2527 void tlsadd(char *value, char *cacertfile, char *cacertpath, char *certfile, char *certkeyfile, char *certkeypwd) {
2530 STACK_OF(X509_NAME) *calist;
2532 unsigned long error;
2534 if (!certfile || !certkeyfile)
2535 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified in TLS context %s", value);
2537 if (!cacertfile && !cacertpath)
2538 debugx(1, DBG_ERR, "CA Certificate file or path need to be specified in TLS context %s", value);
2541 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
2542 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
2543 for (i = 0; i < CRYPTO_num_locks(); i++) {
2544 ssl_lock_count[i] = 0;
2545 pthread_mutex_init(&ssl_locks[i], NULL);
2547 CRYPTO_set_id_callback(ssl_thread_id);
2548 CRYPTO_set_locking_callback(ssl_locking_callback);
2550 SSL_load_error_strings();
2553 while (!RAND_status()) {
2554 time_t t = time(NULL);
2555 pid_t pid = getpid();
2556 RAND_seed((unsigned char *)&t, sizeof(time_t));
2557 RAND_seed((unsigned char *)&pid, sizeof(pid));
2560 ctx = SSL_CTX_new(TLSv1_method());
2562 SSL_CTX_set_default_passwd_cb_userdata(ctx, certkeypwd);
2563 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
2565 if (!SSL_CTX_use_certificate_chain_file(ctx, certfile) ||
2566 !SSL_CTX_use_PrivateKey_file(ctx, certkeyfile, SSL_FILETYPE_PEM) ||
2567 !SSL_CTX_check_private_key(ctx) ||
2568 !SSL_CTX_load_verify_locations(ctx, cacertfile, cacertpath)) {
2569 while ((error = ERR_get_error()))
2570 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2571 debugx(1, DBG_ERR, "Error initialising SSL/TLS in TLS context %s", value);
2574 calist = cacertfile ? SSL_load_client_CA_file(cacertfile) : NULL;
2575 if (!cacertfile || calist) {
2578 calist = sk_X509_NAME_new_null();
2579 if (!SSL_add_dir_cert_subjects_to_stack(calist, cacertpath)) {
2580 sk_X509_NAME_free(calist);
2586 while ((error = ERR_get_error()))
2587 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2588 debugx(1, DBG_ERR, "Error adding CA subjects in TLS context %s", value);
2590 SSL_CTX_set_client_CA_list(ctx, calist);
2592 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
2593 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
2595 new = malloc(sizeof(struct tls));
2596 if (!new || !list_push(tlsconfs, new))
2597 debugx(1, DBG_ERR, "malloc failed");
2599 memset(new, 0, sizeof(struct tls));
2600 new->name = stringcopy(value, 0);
2602 debugx(1, DBG_ERR, "malloc failed");
2605 debug(DBG_DBG, "tlsadd: added TLS context %s", value);
2609 struct list_node *entry;
2612 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2613 t = (struct tls *)entry->data;
2617 SSL_CTX_free(t->ctx);
2619 list_destroy(tlsconfs);
2623 SSL_CTX *tlsgetctx(char *alt1, char *alt2) {
2624 struct list_node *entry;
2625 struct tls *t, *t1 = NULL, *t2 = NULL;
2627 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2628 t = (struct tls *)entry->data;
2629 if (!strcasecmp(t->name, alt1)) {
2633 if (!t2 && alt2 && !strcasecmp(t->name, alt2))
2644 struct list *addsrvconfs(char *value, char **names) {
2645 struct list *conflist;
2647 struct list_node *entry;
2648 struct clsrvconf *conf;
2650 if (!names || !*names)
2653 conflist = list_create();
2655 debug(DBG_ERR, "malloc failed");
2659 for (n = 0; names[n]; n++) {
2660 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2661 conf = (struct clsrvconf *)entry->data;
2662 if (!strcasecmp(names[n], conf->name))
2666 debug(DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]);
2667 list_destroy(conflist);
2670 if (!list_push(conflist, conf)) {
2671 debug(DBG_ERR, "malloc failed");
2672 list_destroy(conflist);
2675 debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value);
2680 void freerealm(struct realm *realm) {
2684 if (realm->srvconfs)
2685 list_destroy(realm->srvconfs);
2686 if (realm->accsrvconfs)
2687 list_destroy(realm->accsrvconfs);
2691 struct realm *addrealm(struct list *realmlist, char *value, char **servers, char **accservers, char *message) {
2693 struct realm *realm;
2694 char *s, *regex = NULL;
2696 if (*value == '/') {
2697 /* regexp, remove optional trailing / if present */
2698 if (value[strlen(value) - 1] == '/')
2699 value[strlen(value) - 1] = '\0';
2701 /* not a regexp, let us make it one */
2702 if (*value == '*' && !value[1])
2703 regex = stringcopy(".*", 0);
2705 for (n = 0, s = value; *s;)
2708 regex = malloc(strlen(value) + n + 3);
2711 for (n = 1, s = value; *s; s++) {
2721 debug(DBG_ERR, "malloc failed");
2724 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2727 realm = malloc(sizeof(struct realm));
2729 debug(DBG_ERR, "malloc failed");
2732 memset(realm, 0, sizeof(struct realm));
2733 realm->name = stringcopy(value, 0);
2735 debug(DBG_ERR, "malloc failed");
2738 if (message && strlen(message) > 253) {
2739 debug(DBG_ERR, "ReplyMessage can be at most 253 bytes");
2742 realm->message = message;
2744 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_ICASE | REG_NOSUB)) {
2745 debug(DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2749 if (servers && *servers) {
2750 realm->srvconfs = addsrvconfs(value, servers);
2751 if (!realm->srvconfs)
2755 if (accservers && *accservers) {
2756 realm->accsrvconfs = addsrvconfs(value, accservers);
2757 if (!realm->accsrvconfs)
2761 if (!pthread_mutex_init(&realm->subrealms_mutex, NULL)) {
2762 debug(DBG_ERR, "mutex init failed");
2766 if (!list_push(realmlist, realm)) {
2767 debug(DBG_ERR, "malloc failed");
2768 pthread_mutex_destroy(&realm->subrealms_mutex);
2772 debug(DBG_DBG, "addrealm: added realm %s", value);
2782 for (n = 0; servers[n]; n++)
2787 for (n = 0; accservers[n]; n++)
2788 free(accservers[n]);
2794 void adddynamicrealmserver(struct realm *realm, struct clsrvconf *conf, char *id) {
2795 struct clsrvconf *srvconf;
2796 struct realm *newrealm = NULL;
2799 if (!conf->dynamiclookupcommand)
2802 /* create dynamic for the realm (string after last @, exit if nothing after @ */
2803 realmname = strrchr(id, '@');
2810 pthread_mutex_lock(&realm->subrealms_mutex);
2811 /* exit if we now already got a matching subrealm */
2812 if (id2realm(realm->subrealms, id))
2814 srvconf = malloc(sizeof(struct clsrvconf));
2816 debug(DBG_ERR, "malloc failed");
2820 if (!addserver(srvconf))
2823 newrealm = addrealm(realm->subrealms, realmname, NULL, NULL, NULL);
2827 /* add server and accserver to newrealm */
2828 newrealm->srvconfs = list_create();
2829 if (!newrealm->srvconfs || !list_push(newrealm->srvconfs, srvconf)) {
2830 debug(DBG_ERR, "malloc failed");
2833 newrealm->accsrvconfs = list_create();
2834 if (!newrealm->accsrvconfs || !list_push(newrealm->accsrvconfs, srvconf)) {
2835 debug(DBG_ERR, "malloc failed");
2839 if (pthread_create(&srvconf->servers->clientth, NULL, clientwr, (void *)(srvconf->servers))) {
2840 debug(DBG_ERR, "pthread_create failed");
2846 list_removedata(realm->subrealms, newrealm);
2847 freerealm(newrealm);
2849 freeserver(srvconf->servers, 1);
2851 debug(DBG_ERR, "failed to create dynamic server");
2854 pthread_mutex_unlock(&realm->subrealms_mutex);
2857 int addmatchcertattr(struct clsrvconf *conf, char *matchcertattr) {
2861 if (!strncasecmp(matchcertattr, "CN:/", 4)) {
2862 r = &conf->certcnregex;
2863 v = matchcertattr + 4;
2864 } else if (!strncasecmp(matchcertattr, "SubjectAltName:URI:/", 20)) {
2865 r = &conf->certuriregex;
2866 v = matchcertattr + 20;
2871 /* regexp, remove optional trailing / if present */
2872 if (v[strlen(v) - 1] == '/')
2873 v[strlen(v) - 1] = '\0';
2877 *r = malloc(sizeof(regex_t));
2879 debug(DBG_ERR, "malloc failed");
2882 if (regcomp(*r, v, REG_ICASE | REG_NOSUB)) {
2885 debug(DBG_ERR, "failed to compile regular expression %s", v);
2891 int addrewriteattr(struct clsrvconf *conf, char *rewriteattr) {
2894 v = rewriteattr + 11;
2895 if (strncasecmp(rewriteattr, "User-Name:/", 11) || !*v)
2897 /* regexp, remove optional trailing / if present */
2898 if (v[strlen(v) - 1] == '/')
2899 v[strlen(v) - 1] = '\0';
2907 conf->rewriteattrregex = malloc(sizeof(regex_t));
2908 if (!conf->rewriteattrregex) {
2909 debug(DBG_ERR, "malloc failed");
2913 conf->rewriteattrreplacement = stringcopy(w, 0);
2914 if (!conf->rewriteattrreplacement) {
2915 free(conf->rewriteattrregex);
2916 conf->rewriteattrregex = NULL;
2920 if (regcomp(conf->rewriteattrregex, v, REG_ICASE | REG_EXTENDED)) {
2921 free(conf->rewriteattrregex);
2922 conf->rewriteattrregex = NULL;
2923 free(conf->rewriteattrreplacement);
2924 conf->rewriteattrreplacement = NULL;
2925 debug(DBG_ERR, "failed to compile regular expression %s", v);
2932 /* should accept both names and numeric values, only numeric right now */
2933 uint8_t attrname2val(char *attrname) {
2936 val = atoi(attrname);
2937 return val > 0 && val < 256 ? val : 0;
2940 /* should accept both names and numeric values, only numeric right now */
2941 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) {
2944 *vendor = atoi(attrname);
2945 s = strchr(attrname, ':');
2950 *type = atoi(s + 1);
2951 return *type >= 0 && *type < 256;
2954 void rewritefree() {
2955 struct list_node *entry;
2956 struct rewriteconf *r;
2958 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2959 r = (struct rewriteconf *)entry->data;
2965 list_destroy(rewriteconfs);
2966 rewriteconfs = NULL;
2969 struct rewrite *getrewrite(char *alt1, char *alt2) {
2970 struct list_node *entry;
2971 struct rewriteconf *r, *r1 = NULL, *r2 = NULL;
2973 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2974 r = (struct rewriteconf *)entry->data;
2975 if (!strcasecmp(r->name, alt1)) {
2979 if (!r2 && alt2 && !strcasecmp(r->name, alt2))
2990 void addrewrite(char *value, char **attrs, char **vattrs) {
2991 struct rewriteconf *new;
2992 struct rewrite *rewrite = NULL;
2995 uint32_t *p, *va = NULL;
2999 for (; attrs[n]; n++);
3000 a = malloc((n + 1) * sizeof(uint8_t));
3002 debugx(1, DBG_ERR, "malloc failed");
3004 for (i = 0; i < n; i++) {
3005 if (!(a[i] = attrname2val(attrs[i])))
3006 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", attrs[i]);
3015 for (; vattrs[n]; n++);
3016 va = malloc((2 * n + 1) * sizeof(uint32_t));
3018 debugx(1, DBG_ERR, "malloc failed");
3020 for (p = va, i = 0; i < n; i++, p += 2) {
3021 if (!vattrname2val(vattrs[i], p, p + 1))
3022 debugx(1, DBG_ERR, "addrewrite: invalid vendor attribute %s", vattrs[i]);
3030 rewrite = malloc(sizeof(struct rewrite));
3032 debugx(1, DBG_ERR, "malloc failed");
3033 rewrite->removeattrs = a;
3034 rewrite->removevendorattrs = va;
3037 new = malloc(sizeof(struct rewriteconf));
3038 if (!new || !list_push(rewriteconfs, new))
3039 debugx(1, DBG_ERR, "malloc failed");
3041 memset(new, 0, sizeof(struct rewriteconf));
3042 new->name = stringcopy(value, 0);
3044 debugx(1, DBG_ERR, "malloc failed");
3046 new->rewrite = rewrite;
3047 debug(DBG_DBG, "addrewrite: added rewrite block %s", value);
3050 void confclient_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3051 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL, *rewriteattr = NULL;
3052 struct clsrvconf *conf;
3054 debug(DBG_DBG, "confclient_cb called for %s", block);
3056 conf = malloc(sizeof(struct clsrvconf));
3057 if (!conf || !list_push(clconfs, conf))
3058 debugx(1, DBG_ERR, "malloc failed");
3059 memset(conf, 0, sizeof(struct clsrvconf));
3060 conf->certnamecheck = 1;
3062 getgenericconfig(cf, block,
3063 "type", CONF_STR, &type,
3064 "host", CONF_STR, &conf->host,
3065 "secret", CONF_STR, &conf->secret,
3066 "tls", CONF_STR, &tls,
3067 "matchcertificateattribute", CONF_STR, &matchcertattr,
3068 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3069 "rewrite", CONF_STR, &rewrite,
3070 "rewriteattribute", CONF_STR, &rewriteattr,
3074 conf->name = stringcopy(val, 0);
3076 conf->host = stringcopy(val, 0);
3078 if (type && !strcasecmp(type, "udp")) {
3081 } else if (type && !strcasecmp(type, "tls")) {
3082 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultclient", "default");
3084 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
3085 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
3086 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3090 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3095 free(matchcertattr);
3097 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultclient", "default");
3100 if (!addrewriteattr(conf, rewriteattr))
3101 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
3105 if (!resolvepeer(conf, 0))
3106 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3108 if (!conf->secret) {
3109 if (conf->type == 'U')
3110 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3111 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3115 void confserver_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3116 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL;
3117 struct clsrvconf *conf;
3119 debug(DBG_DBG, "confserver_cb called for %s", block);
3121 conf = malloc(sizeof(struct clsrvconf));
3122 if (!conf || !list_push(srvconfs, conf))
3123 debugx(1, DBG_ERR, "malloc failed");
3124 memset(conf, 0, sizeof(struct clsrvconf));
3125 conf->certnamecheck = 1;
3127 getgenericconfig(cf, block,
3128 "type", CONF_STR, &type,
3129 "host", CONF_STR, &conf->host,
3130 "port", CONF_STR, &conf->port,
3131 "secret", CONF_STR, &conf->secret,
3132 "tls", CONF_STR, &tls,
3133 "MatchCertificateAttribute", CONF_STR, &matchcertattr,
3134 "rewrite", CONF_STR, &rewrite,
3135 "StatusServer", CONF_BLN, &conf->statusserver,
3136 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3137 "DynamicLookupCommand", CONF_STR, &conf->dynamiclookupcommand,
3141 conf->name = stringcopy(val, 0);
3143 conf->host = stringcopy(val, 0);
3145 if (type && !strcasecmp(type, "udp")) {
3149 conf->port = stringcopy(DEFAULT_UDP_PORT, 0);
3150 } else if (type && !strcasecmp(type, "tls")) {
3151 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultserver", "default");
3153 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
3154 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
3155 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3157 conf->port = stringcopy(DEFAULT_TLS_PORT, 0);
3161 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3166 free(matchcertattr);
3168 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultserver", "default");
3170 if (!conf->dynamiclookupcommand && !resolvepeer(conf, 0))
3171 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3173 if (!conf->secret) {
3174 if (conf->type == 'U')
3175 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3176 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3180 void confrealm_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3181 char **servers = NULL, **accservers = NULL, *msg = NULL;
3183 debug(DBG_DBG, "confrealm_cb called for %s", block);
3185 getgenericconfig(cf, block,
3186 "server", CONF_MSTR, &servers,
3187 "accountingServer", CONF_MSTR, &accservers,
3188 "ReplyMessage", CONF_STR, &msg,
3192 addrealm(realms, val, servers, accservers, msg);
3195 void conftls_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3196 char *cacertfile = NULL, *cacertpath = NULL, *certfile = NULL, *certkeyfile = NULL, *certkeypwd = NULL;
3198 debug(DBG_DBG, "conftls_cb called for %s", block);
3200 getgenericconfig(cf, block,
3201 "CACertificateFile", CONF_STR, &cacertfile,
3202 "CACertificatePath", CONF_STR, &cacertpath,
3203 "CertificateFile", CONF_STR, &certfile,
3204 "CertificateKeyFile", CONF_STR, &certkeyfile,
3205 "CertificateKeyPassword", CONF_STR, &certkeypwd,
3209 tlsadd(val, cacertfile, cacertpath, certfile, certkeyfile, certkeypwd);
3217 void confrewrite_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3218 char **attrs = NULL, **vattrs = NULL;
3220 debug(DBG_DBG, "confrewrite_cb called for %s", block);
3222 getgenericconfig(cf, block,
3223 "removeAttribute", CONF_MSTR, &attrs,
3224 "removeVendorAttribute", CONF_MSTR, &vattrs,
3227 addrewrite(val, attrs, vattrs);
3230 void getmainconfig(const char *configfile) {
3231 char *loglevel = NULL;
3232 struct gconffile *cfs;
3234 cfs = openconfigfile(configfile);
3235 memset(&options, 0, sizeof(options));
3237 clconfs = list_create();
3239 debugx(1, DBG_ERR, "malloc failed");
3241 srvconfs = list_create();
3243 debugx(1, DBG_ERR, "malloc failed");
3245 realms = list_create();
3247 debugx(1, DBG_ERR, "malloc failed");
3249 tlsconfs = list_create();
3251 debugx(1, DBG_ERR, "malloc failed");
3253 rewriteconfs = list_create();
3255 debugx(1, DBG_ERR, "malloc failed");
3257 getgenericconfig(&cfs, NULL,
3258 "ListenUDP", CONF_STR, &options.listenudp,
3259 "ListenTCP", CONF_STR, &options.listentcp,
3260 "ListenAccountingUDP", CONF_STR, &options.listenaccudp,
3261 "SourceUDP", CONF_STR, &options.sourceudp,
3262 "SourceTCP", CONF_STR, &options.sourcetcp,
3263 "LogLevel", CONF_STR, &loglevel,
3264 "LogDestination", CONF_STR, &options.logdestination,
3265 "Client", CONF_CBK, confclient_cb,
3266 "Server", CONF_CBK, confserver_cb,
3267 "Realm", CONF_CBK, confrealm_cb,
3268 "TLS", CONF_CBK, conftls_cb,
3269 "Rewrite", CONF_CBK, confrewrite_cb,
3276 if (strlen(loglevel) != 1 || *loglevel < '1' || *loglevel > '4')
3277 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %s, must be 1, 2, 3 or 4", configfile, loglevel);
3278 options.loglevel = *loglevel - '0';
3283 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile) {
3286 while ((c = getopt(argc, argv, "c:d:fpv")) != -1) {
3289 *configfile = optarg;
3292 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
3293 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
3294 *loglevel = *optarg - '0';
3303 debugx(0, DBG_ERR, "radsecproxy revision $Rev$");
3308 if (!(argc - optind))
3312 debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -p ] [ -v ]", argv[0]);
3316 int daemon(int a, int b) {
3324 for (i = 0; i < 3; i++) {
3326 open("/dev/null", O_RDWR);
3332 void *sighandler(void *arg) {
3337 sigemptyset(&sigset);
3338 sigaddset(&sigset, SIGPIPE);
3339 sigwait(&sigset, &sig);
3340 /* only get SIGPIPE right now, so could simplify below code */
3343 /* completely ignoring this */
3346 debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?");
3349 debug(DBG_WARN, "sighandler: ignoring signal %d", sig);
3354 int main(int argc, char **argv) {
3355 pthread_t sigth, udpserverth, udpaccserverth, udpclient4rdth, udpclient6rdth;
3357 struct list_node *entry;
3358 uint8_t foreground = 0, pretend = 0, loglevel = 0;
3359 char *configfile = NULL;
3360 struct clsrvconf *srvconf;
3362 debug_init("radsecproxy");
3363 debug_set_level(DEBUG_LEVEL);
3364 getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile);
3366 debug_set_level(loglevel);
3367 getmainconfig(configfile ? configfile : CONFIG_MAIN);
3369 options.loglevel = loglevel;
3370 else if (options.loglevel)
3371 debug_set_level(options.loglevel);
3373 free(options.logdestination);
3374 options.logdestination = NULL;
3376 if (!options.logdestination)
3377 options.logdestination = "x-syslog:///";
3378 debug_set_destination(options.logdestination);
3379 free(options.logdestination);
3382 if (!list_first(clconfs))
3383 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
3384 if (!list_first(srvconfs))
3385 debugx(1, DBG_ERR, "No servers configured, nothing to do, exiting");
3386 if (!list_first(realms))
3387 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
3390 debugx(0, DBG_ERR, "All OK so far; exiting since only pretending");
3392 if (!foreground && (daemon(0, 0) < 0))
3393 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
3395 debug(DBG_INFO, "radsecproxy revision $Rev$ starting");
3397 sigemptyset(&sigset);
3398 /* exit on all but SIGPIPE, ignore more? */
3399 sigaddset(&sigset, SIGPIPE);
3400 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
3401 pthread_create(&sigth, NULL, sighandler, NULL);
3403 if (client_udp_count) {
3404 udp_server_replyq = newreplyq();
3405 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
3406 debugx(1, DBG_ERR, "pthread_create failed");
3407 if (options.listenaccudp)
3408 if (pthread_create(&udpaccserverth, NULL, udpaccserverrd, NULL))
3409 debugx(1, DBG_ERR, "pthread_create failed");
3412 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
3413 srvconf = (struct clsrvconf *)entry->data;
3414 if (srvconf->dynamiclookupcommand)
3416 if (!addserver(srvconf))
3417 debugx(1, DBG_ERR, "failed to add server");
3418 if (pthread_create(&srvconf->servers->clientth, NULL, clientwr,
3419 (void *)(srvconf->servers)))
3420 debugx(1, DBG_ERR, "pthread_create failed");
3422 /* srcudpres no longer needed, while srctcpres is needed later */
3424 freeaddrinfo(srcudpres);
3427 if (udp_client4_sock >= 0)
3428 if (pthread_create(&udpclient4rdth, NULL, udpclientrd, (void *)&udp_client4_sock))
3429 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3430 if (udp_client6_sock >= 0)
3431 if (pthread_create(&udpclient6rdth, NULL, udpclientrd, (void *)&udp_client6_sock))
3432 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3434 if (client_tls_count)
3435 return tlslistener();
3437 /* just hang around doing nothing, anything to do here? */