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>
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;
65 static int server_udp_count = 0;
66 static int server_tls_count = 0;
68 static struct addrinfo *srcudpres = NULL;
69 static struct addrinfo *srctcpres = NULL;
71 static struct replyq *udp_server_replyq = NULL;
72 static int udp_server_sock = -1;
73 static int udp_accserver_sock = -1;
74 static int udp_client4_sock = -1;
75 static int udp_client6_sock = -1;
76 static pthread_mutex_t *ssl_locks;
77 static long *ssl_lock_count;
81 /* minimum required declarations to avoid reordering code */
82 void adddynamicrealmserver(struct realm *realm, struct clsrvconf *conf, char *id);
83 void dynamicconfig(struct server *server);
84 int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val);
86 /* callbacks for making OpenSSL thread safe */
87 unsigned long ssl_thread_id() {
88 return (unsigned long)pthread_self();
91 void ssl_locking_callback(int mode, int type, const char *file, int line) {
92 if (mode & CRYPTO_LOCK) {
93 pthread_mutex_lock(&ssl_locks[type]);
94 ssl_lock_count[type]++;
96 pthread_mutex_unlock(&ssl_locks[type]);
99 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
100 int pwdlen = strlen(userdata);
101 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
103 memcpy(buf, userdata, pwdlen);
107 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
112 err_cert = X509_STORE_CTX_get_current_cert(ctx);
113 err = X509_STORE_CTX_get_error(ctx);
114 depth = X509_STORE_CTX_get_error_depth(ctx);
116 if (depth > MAX_CERT_DEPTH) {
118 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
119 X509_STORE_CTX_set_error(ctx, err);
123 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
124 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
127 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
128 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
129 debug(DBG_WARN, "\tIssuer=%s", buf);
131 case X509_V_ERR_CERT_NOT_YET_VALID:
132 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
133 debug(DBG_WARN, "\tCertificate not yet valid");
135 case X509_V_ERR_CERT_HAS_EXPIRED:
136 debug(DBG_WARN, "Certificate has expired");
138 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
139 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
144 printf("certificate verify returns %d\n", ok);
149 int resolvepeer(struct clsrvconf *conf, int ai_flags) {
150 struct addrinfo hints, *addrinfo, *res;
154 slash = conf->host ? strchr(conf->host, '/') : NULL;
158 debug(DBG_WARN, "resolvepeer: prefix length must be specified after the / in %s", conf->host);
162 if (*s < '0' || *s > '9') {
163 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
166 plen = atoi(slash + 1);
167 if (plen < 0 || plen > 128) {
168 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
173 memset(&hints, 0, sizeof(hints));
174 hints.ai_socktype = (conf->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
175 hints.ai_family = AF_UNSPEC;
176 hints.ai_flags = ai_flags;
177 if (!conf->host && !conf->port) {
178 /* getaddrinfo() doesn't like host and port to be NULL */
179 if (getaddrinfo(conf->host, DEFAULT_UDP_PORT, &hints, &addrinfo)) {
180 debug(DBG_WARN, "resolvepeer: can't resolve (null) port (null)");
183 for (res = addrinfo; res; res = res->ai_next) {
184 switch (res->ai_family) {
186 ((struct sockaddr_in *)res->ai_addr)->sin_port = 0;
189 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = 0;
195 hints.ai_flags |= AI_NUMERICHOST;
196 if (getaddrinfo(conf->host, conf->port, &hints, &addrinfo)) {
197 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
202 switch (addrinfo->ai_family) {
205 debug(DBG_WARN, "resolvepeer: prefix length must be <= 32 in %s", conf->host);
206 freeaddrinfo(addrinfo);
213 debug(DBG_WARN, "resolvepeer: prefix must be IPv4 or IPv6 in %s", conf->host);
214 freeaddrinfo(addrinfo);
217 conf->prefixlen = plen;
219 conf->prefixlen = 255;
222 freeaddrinfo(conf->addrinfo);
223 conf->addrinfo = addrinfo;
227 int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
229 struct addrinfo *res;
231 for (res = addrinfo; res; res = res->ai_next) {
232 if (family != AF_UNSPEC && family != res->ai_family)
234 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
236 debug(DBG_WARN, "bindtoaddr: socket failed");
240 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
243 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
246 if (!bind(s, res->ai_addr, res->ai_addrlen))
248 debug(DBG_WARN, "bindtoaddr: bind failed");
254 char *parsehostport(char *s, struct clsrvconf *conf, char *default_port) {
259 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
263 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
265 debugx(1, DBG_ERR, "no ] matching initial [");
269 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
272 debugx(1, DBG_ERR, "missing host/address");
274 conf->host = stringcopy(field, p - field);
277 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
278 debugx(1, DBG_ERR, "unexpected character after ]");
281 /* port number or service name is specified */;
283 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
285 debugx(1, DBG_ERR, "syntax error, : but no following port");
286 conf->port = stringcopy(field, p - field);
288 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
292 struct clsrvconf *resolve_hostport(char type, char *lconf, char *default_port) {
293 struct clsrvconf *conf;
295 conf = malloc(sizeof(struct clsrvconf));
297 debugx(1, DBG_ERR, "malloc failed");
298 memset(conf, 0, sizeof(struct clsrvconf));
301 parsehostport(lconf, conf, default_port);
302 if (!strcmp(conf->host, "*")) {
307 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
308 if (!resolvepeer(conf, AI_PASSIVE))
309 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
313 void freeclsrvres(struct clsrvconf *res) {
317 freeaddrinfo(res->addrinfo);
321 int connecttcp(struct addrinfo *addrinfo) {
323 struct addrinfo *res;
326 for (res = addrinfo; res; res = res->ai_next) {
327 s = bindtoaddr(srctcpres, res->ai_family, 1, 1);
329 debug(DBG_WARN, "connecttoserver: socket failed");
332 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
334 debug(DBG_WARN, "connecttoserver: connect failed");
341 /* returns 1 if the len first bits are equal, else 0 */
342 int prefixmatch(void *a1, void *a2, uint8_t len) {
343 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
345 if (l && memcmp(a1, a2, l))
350 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
353 /* check if conf has matching address */
354 struct clsrvconf *checkconfaddr(char type, struct sockaddr *addr, struct clsrvconf *conf) {
355 struct sockaddr_in6 *sa6 = NULL;
356 struct in_addr *a4 = NULL;
357 struct addrinfo *res;
359 if (addr->sa_family == AF_INET6) {
360 sa6 = (struct sockaddr_in6 *)addr;
361 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
362 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
366 a4 = &((struct sockaddr_in *)addr)->sin_addr;
368 if (conf->type == type) {
369 if (conf->prefixlen == 255) {
370 for (res = conf->addrinfo; res; res = res->ai_next)
371 if ((a4 && res->ai_family == AF_INET &&
372 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
373 (sa6 && res->ai_family == AF_INET6 &&
374 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
377 res = conf->addrinfo;
379 ((a4 && res->ai_family == AF_INET &&
380 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
381 (sa6 && res->ai_family == AF_INET6 &&
382 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
389 /* returns next config with matching address, or NULL */
390 struct clsrvconf *find_conf(char type, struct sockaddr *addr, struct list *confs, struct list_node **cur) {
391 struct sockaddr_in6 *sa6 = NULL;
392 struct in_addr *a4 = NULL;
393 struct addrinfo *res;
394 struct list_node *entry;
395 struct clsrvconf *conf;
397 if (addr->sa_family == AF_INET6) {
398 sa6 = (struct sockaddr_in6 *)addr;
399 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
400 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
404 a4 = &((struct sockaddr_in *)addr)->sin_addr;
406 for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) {
407 conf = (struct clsrvconf *)entry->data;
408 if (conf->type == type) {
409 if (conf->prefixlen == 255) {
410 for (res = conf->addrinfo; res; res = res->ai_next)
411 if ((a4 && res->ai_family == AF_INET &&
412 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
413 (sa6 && res->ai_family == AF_INET6 &&
414 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16))) {
420 res = conf->addrinfo;
422 ((a4 && res->ai_family == AF_INET &&
423 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
424 (sa6 && res->ai_family == AF_INET6 &&
425 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen)))) {
436 struct replyq *newreplyq() {
437 struct replyq *replyq;
439 replyq = malloc(sizeof(struct replyq));
441 debugx(1, DBG_ERR, "malloc failed");
442 replyq->replies = list_create();
443 if (!replyq->replies)
444 debugx(1, DBG_ERR, "malloc failed");
445 pthread_mutex_init(&replyq->mutex, NULL);
446 pthread_cond_init(&replyq->cond, NULL);
450 struct client *addclient(struct clsrvconf *conf) {
451 struct client *new = malloc(sizeof(struct client));
454 debug(DBG_ERR, "malloc failed");
457 if (!conf->clients) {
458 conf->clients = list_create();
459 if (!conf->clients) {
460 debug(DBG_ERR, "malloc failed");
465 memset(new, 0, sizeof(struct client));
467 new->replyq = conf->type == 'T' ? newreplyq() : udp_server_replyq;
469 list_push(conf->clients, new);
473 void removeclient(struct client *client) {
474 struct list_node *entry;
476 if (!client || !client->conf->clients)
479 pthread_mutex_lock(&client->replyq->mutex);
480 for (entry = list_first(client->replyq->replies); entry; entry = list_next(entry))
481 free(((struct reply *)entry)->buf);
482 list_destroy(client->replyq->replies);
483 pthread_cond_destroy(&client->replyq->cond);
484 pthread_mutex_unlock(&client->replyq->mutex);
485 pthread_mutex_destroy(&client->replyq->mutex);
486 list_removedata(client->conf->clients, client);
490 void removeclientrqs(struct client *client) {
491 struct list_node *entry;
492 struct server *server;
496 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
497 server = ((struct clsrvconf *)entry->data)->servers;
498 pthread_mutex_lock(&server->newrq_mutex);
499 for (i = 0; i < MAX_REQUESTS; i++) {
500 rq = server->requests + i;
501 if (rq->from == client)
504 pthread_mutex_unlock(&server->newrq_mutex);
508 void freeserver(struct server *server, uint8_t destroymutex) {
512 free(server->requests);
513 free(server->dynamiclookuparg);
515 pthread_mutex_destroy(&server->lock);
516 pthread_cond_destroy(&server->newrq_cond);
517 pthread_mutex_destroy(&server->newrq_mutex);
522 int addserver(struct clsrvconf *conf) {
523 struct clsrvconf *res;
526 debug(DBG_ERR, "addserver: currently works with just one server per conf");
529 conf->servers = malloc(sizeof(struct server));
530 if (!conf->servers) {
531 debug(DBG_ERR, "malloc failed");
534 memset(conf->servers, 0, sizeof(struct server));
535 conf->servers->conf = conf;
537 if (conf->type == 'U') {
539 res = resolve_hostport('U', options.sourceudp, NULL);
540 srcudpres = res->addrinfo;
541 res->addrinfo = NULL;
544 switch (conf->addrinfo->ai_family) {
546 if (udp_client4_sock < 0) {
547 udp_client4_sock = bindtoaddr(srcudpres, AF_INET, 0, 1);
548 if (udp_client4_sock < 0)
549 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
551 conf->servers->sock = udp_client4_sock;
554 if (udp_client6_sock < 0) {
555 udp_client6_sock = bindtoaddr(srcudpres, AF_INET6, 0, 1);
556 if (udp_client6_sock < 0)
557 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
559 conf->servers->sock = udp_client6_sock;
562 debugx(1, DBG_ERR, "addserver: unsupported address family");
567 res = resolve_hostport('T', options.sourcetcp, NULL);
568 srctcpres = res->addrinfo;
569 res->addrinfo = NULL;
572 conf->servers->sock = -1;
575 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct request));
576 if (!conf->servers->requests) {
577 debug(DBG_ERR, "malloc failed");
580 if (pthread_mutex_init(&conf->servers->lock, NULL)) {
581 debug(DBG_ERR, "mutex init failed");
584 conf->servers->newrq = 0;
585 if (pthread_mutex_init(&conf->servers->newrq_mutex, NULL)) {
586 debug(DBG_ERR, "mutex init failed");
587 pthread_mutex_destroy(&conf->servers->lock);
590 if (pthread_cond_init(&conf->servers->newrq_cond, NULL)) {
591 debug(DBG_ERR, "mutex init failed");
592 pthread_mutex_destroy(&conf->servers->newrq_mutex);
593 pthread_mutex_destroy(&conf->servers->lock);
600 freeserver(conf->servers, 0);
601 conf->servers = NULL;
605 /* exactly one of client and server must be non-NULL */
606 /* should probably take peer list (client(s) or server(s)) as argument instead */
607 /* if *peer == NULL we return who we received from, else require it to be from peer */
608 /* return from in sa if not NULL */
609 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
611 unsigned char buf[65536], *rad;
612 struct sockaddr_storage from;
613 socklen_t fromlen = sizeof(from);
615 struct list_node *node;
618 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
620 debug(DBG_WARN, "radudpget: recv failed");
623 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
626 debug(DBG_WARN, "radudpget: packet too small");
632 debug(DBG_WARN, "radudpget: length too small");
637 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
641 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
645 p = checkconfaddr('U', (struct sockaddr *)&from, (*client)->conf);
647 p = find_conf('U', (struct sockaddr *)&from, clconfs, NULL);
650 p = checkconfaddr('U', (struct sockaddr *)&from, (*server)->conf);
652 p = find_conf('U', (struct sockaddr *)&from, srvconfs, NULL);
655 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer %s, ignoring", addr2string((struct sockaddr *)&from, fromlen));
661 debug(DBG_ERR, "radudpget: malloc failed");
665 if (client && !*client) {
666 node = list_first(p->clients);
667 *client = node ? (struct client *)node->data : addclient(p);
672 } else if (server && !*server)
673 *server = p->servers;
677 memcpy(rad, buf, len);
683 int subjectaltnameaddr(X509 *cert, int family, struct in6_addr *addr) {
684 int loc, i, l, n, r = 0;
687 STACK_OF(GENERAL_NAME) *alt;
690 debug(DBG_DBG, "subjectaltnameaddr");
692 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
696 ex = X509_get_ext(cert, loc);
697 alt = X509V3_EXT_d2i(ex);
701 n = sk_GENERAL_NAME_num(alt);
702 for (i = 0; i < n; i++) {
703 gn = sk_GENERAL_NAME_value(alt, i);
704 if (gn->type != GEN_IPADD)
707 v = (char *)ASN1_STRING_data(gn->d.ia5);
708 l = ASN1_STRING_length(gn->d.ia5);
709 if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
710 && !memcmp(v, &addr, l)) {
715 GENERAL_NAMES_free(alt);
719 int cnregexp(X509 *cert, char *exact, regex_t *regex) {
726 nm = X509_get_subject_name(cert);
729 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
732 e = X509_NAME_get_entry(nm, loc);
733 t = X509_NAME_ENTRY_get_data(e);
734 v = (char *) ASN1_STRING_data(t);
735 l = ASN1_STRING_length(t);
739 if (l == strlen(exact) && !strncasecmp(exact, v, l))
742 s = stringcopy((char *)v, l);
744 debug(DBG_ERR, "malloc failed");
747 if (regexec(regex, s, 0, NULL, 0)) {
758 int subjectaltnameregexp(X509 *cert, int type, char *exact, regex_t *regex) {
759 int loc, i, l, n, r = 0;
762 STACK_OF(GENERAL_NAME) *alt;
765 debug(DBG_DBG, "subjectaltnameregexp");
767 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
771 ex = X509_get_ext(cert, loc);
772 alt = X509V3_EXT_d2i(ex);
776 n = sk_GENERAL_NAME_num(alt);
777 for (i = 0; i < n; i++) {
778 gn = sk_GENERAL_NAME_value(alt, i);
779 if (gn->type != type)
782 v = (char *)ASN1_STRING_data(gn->d.ia5);
783 l = ASN1_STRING_length(gn->d.ia5);
787 printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
790 if (memcmp(v, exact, l))
793 s = stringcopy((char *)v, l);
795 debug(DBG_ERR, "malloc failed");
798 if (regexec(regex, s, 0, NULL, 0)) {
807 GENERAL_NAMES_free(alt);
811 X509 *verifytlscert(SSL *ssl) {
815 if (SSL_get_verify_result(ssl) != X509_V_OK) {
816 debug(DBG_ERR, "verifytlscert: basic validation failed");
817 while ((error = ERR_get_error()))
818 debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
822 cert = SSL_get_peer_certificate(ssl);
824 debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
828 int verifyconfcert(X509 *cert, struct clsrvconf *conf) {
830 uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
831 struct in6_addr addr;
833 if (conf->certnamecheck && conf->prefixlen == 255) {
834 if (inet_pton(AF_INET, conf->host, &addr))
836 else if (inet_pton(AF_INET6, conf->host, &addr))
839 r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, conf->host, NULL);
842 debug(DBG_WARN, "verifyconfcert: No subjectaltname matching %s %s", type ? "address" : "host", conf->host);
845 debug(DBG_DBG, "verifyconfcert: Found subjectaltname matching %s %s", type ? "address" : "host", conf->host);
847 if (!cnregexp(cert, conf->host, NULL)) {
848 debug(DBG_WARN, "verifyconfcert: cn not matching host %s", conf->host);
851 debug(DBG_DBG, "verifyconfcert: Found cn matching host %s", conf->host);
854 if (conf->certcnregex) {
855 if (cnregexp(cert, NULL, conf->certcnregex) < 1) {
856 debug(DBG_WARN, "verifyconfcert: CN not matching regex");
859 debug(DBG_DBG, "verifyconfcert: CN matching regex");
861 if (conf->certuriregex) {
862 if (subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex) < 1) {
863 debug(DBG_WARN, "verifyconfcert: subjectaltname URI not matching regex");
866 debug(DBG_DBG, "verifyconfcert: subjectaltname URI matching regex");
871 void tlsconnect(struct server *server, struct timeval *when, char *text) {
876 debug(DBG_DBG, "tlsconnect called from %s", text);
877 pthread_mutex_lock(&server->lock);
878 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
879 /* already reconnected, nothing to do */
880 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
881 pthread_mutex_unlock(&server->lock);
885 debug(DBG_DBG, "tlsconnect %s", text);
888 gettimeofday(&now, NULL);
889 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
890 if (server->connectionok) {
891 server->connectionok = 0;
893 } else if (elapsed < 1)
895 else if (elapsed < 60) {
896 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
898 } else if (elapsed < 100000) {
899 debug(DBG_INFO, "tlsconnect: sleeping %ds", 60);
902 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
903 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->conf->host, server->conf->port);
904 if (server->sock >= 0)
906 if ((server->sock = connecttcp(server->conf->addrinfo)) < 0) {
907 debug(DBG_ERR, "tlsconnect: connecttcp failed");
911 SSL_free(server->ssl);
912 server->ssl = SSL_new(server->conf->ssl_ctx);
913 SSL_set_fd(server->ssl, server->sock);
914 if (SSL_connect(server->ssl) <= 0)
916 cert = verifytlscert(server->ssl);
919 if (verifyconfcert(cert, server->conf)) {
925 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->conf->host, server->conf->port);
926 gettimeofday(&server->lastconnecttry, NULL);
927 pthread_mutex_unlock(&server->lock);
930 unsigned char *radtlsget(SSL *ssl) {
932 unsigned char buf[4], *rad;
935 for (total = 0; total < 4; total += cnt) {
936 cnt = SSL_read(ssl, buf + total, 4 - total);
938 debug(DBG_ERR, "radtlsget: connection lost");
939 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
940 /* remote end sent close_notify, send one back */
950 debug(DBG_ERR, "radtlsget: malloc failed");
955 for (; total < len; total += cnt) {
956 cnt = SSL_read(ssl, rad + total, len - total);
958 debug(DBG_ERR, "radtlsget: connection lost");
959 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
960 /* remote end sent close_notify, send one back */
972 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
975 debug(DBG_DBG, "radtlsget: got %d bytes", total);
979 int clientradputudp(struct server *server, unsigned char *rad) {
981 struct sockaddr_storage sa;
982 struct sockaddr *sap;
983 struct clsrvconf *conf = server->conf;
984 in_port_t *port = NULL;
988 if (*rad == RAD_Accounting_Request) {
989 sap = (struct sockaddr *)&sa;
990 memcpy(sap, conf->addrinfo->ai_addr, conf->addrinfo->ai_addrlen);
992 sap = conf->addrinfo->ai_addr;
994 switch (sap->sa_family) {
996 port = &((struct sockaddr_in *)sap)->sin_port;
999 port = &((struct sockaddr_in6 *)sap)->sin6_port;
1005 if (*rad == RAD_Accounting_Request)
1006 *port = htons(ntohs(*port) + 1);
1008 if (sendto(server->sock, rad, len, 0, sap, conf->addrinfo->ai_addrlen) >= 0) {
1009 debug(DBG_DBG, "clienradputudp: sent UDP of length %d to %s port %d", len, conf->host, ntohs(*port));
1013 debug(DBG_WARN, "clientradputudp: send failed");
1017 int clientradputtls(struct server *server, unsigned char *rad) {
1020 unsigned long error;
1021 struct timeval lastconnecttry;
1022 struct clsrvconf *conf = server->conf;
1025 lastconnecttry = server->lastconnecttry;
1026 while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
1027 while ((error = ERR_get_error()))
1028 debug(DBG_ERR, "clientradputtls: TLS: %s", ERR_error_string(error, NULL));
1029 tlsconnect(server, &lastconnecttry, "clientradputtls");
1030 lastconnecttry = server->lastconnecttry;
1033 server->connectionok = 1;
1034 debug(DBG_DBG, "clientradputtls: Sent %d bytes, Radius packet of length %d to TLS peer %s", cnt, len, conf->host);
1038 int clientradput(struct server *server, unsigned char *rad) {
1039 switch (server->conf->type) {
1041 return clientradputudp(server, rad);
1043 return clientradputtls(server, rad);
1048 int radsign(unsigned char *rad, unsigned char *sec) {
1049 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1050 static unsigned char first = 1;
1051 static EVP_MD_CTX mdctx;
1052 unsigned int md_len;
1055 pthread_mutex_lock(&lock);
1057 EVP_MD_CTX_init(&mdctx);
1061 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1062 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
1063 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1064 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
1066 pthread_mutex_unlock(&lock);
1070 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
1071 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1072 static unsigned char first = 1;
1073 static EVP_MD_CTX mdctx;
1074 unsigned char hash[EVP_MAX_MD_SIZE];
1078 pthread_mutex_lock(&lock);
1080 EVP_MD_CTX_init(&mdctx);
1086 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1087 EVP_DigestUpdate(&mdctx, rad, 4) &&
1088 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
1089 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
1090 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1091 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
1093 !memcmp(hash, rad + 4, 16));
1094 pthread_mutex_unlock(&lock);
1098 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
1099 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1100 static unsigned char first = 1;
1101 static HMAC_CTX hmacctx;
1102 unsigned int md_len;
1103 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
1105 pthread_mutex_lock(&lock);
1107 HMAC_CTX_init(&hmacctx);
1111 memcpy(auth, authattr, 16);
1112 memset(authattr, 0, 16);
1114 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1115 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1116 HMAC_Final(&hmacctx, hash, &md_len);
1117 memcpy(authattr, auth, 16);
1119 debug(DBG_WARN, "message auth computation failed");
1120 pthread_mutex_unlock(&lock);
1124 if (memcmp(auth, hash, 16)) {
1125 debug(DBG_WARN, "message authenticator, wrong value");
1126 pthread_mutex_unlock(&lock);
1130 pthread_mutex_unlock(&lock);
1134 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
1135 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1136 static unsigned char first = 1;
1137 static HMAC_CTX hmacctx;
1138 unsigned int md_len;
1143 pthread_mutex_lock(&lock);
1145 HMAC_CTX_init(&hmacctx);
1149 memset(authattrval, 0, 16);
1151 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1152 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1153 HMAC_Final(&hmacctx, authattrval, &md_len);
1155 debug(DBG_WARN, "message auth computation failed");
1156 pthread_mutex_unlock(&lock);
1160 pthread_mutex_unlock(&lock);
1164 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
1165 while (length > 1) {
1166 if (ATTRTYPE(attrs) == type)
1168 length -= ATTRLEN(attrs);
1169 attrs += ATTRLEN(attrs);
1174 void freerqdata(struct request *rq) {
1175 if (rq->origusername)
1176 free(rq->origusername);
1181 void sendrq(struct server *to, struct request *rq) {
1185 pthread_mutex_lock(&to->newrq_mutex);
1186 /* might simplify if only try nextid, might be ok */
1187 for (i = to->nextid; i < MAX_REQUESTS; i++)
1188 if (!to->requests[i].buf)
1190 if (i == MAX_REQUESTS) {
1191 for (i = 0; i < to->nextid; i++)
1192 if (!to->requests[i].buf)
1194 if (i == to->nextid) {
1195 debug(DBG_WARN, "No room in queue, dropping request");
1197 pthread_mutex_unlock(&to->newrq_mutex);
1202 rq->buf[1] = (char)i;
1204 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
1205 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->conf->secret)) {
1207 pthread_mutex_unlock(&to->newrq_mutex);
1211 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->host);
1212 to->requests[i] = *rq;
1217 debug(DBG_DBG, "signalling client writer");
1218 pthread_cond_signal(&to->newrq_cond);
1220 pthread_mutex_unlock(&to->newrq_mutex);
1223 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
1224 struct reply *reply;
1227 if (!radsign(buf, (unsigned char *)to->conf->secret)) {
1229 debug(DBG_WARN, "sendreply: failed to sign message");
1233 reply = malloc(sizeof(struct reply));
1236 debug(DBG_ERR, "sendreply: malloc failed");
1239 memset(reply, 0, sizeof(struct reply));
1242 reply->tosa = *tosa;
1244 pthread_mutex_lock(&to->replyq->mutex);
1246 first = list_first(to->replyq->replies) == NULL;
1248 if (!list_push(to->replyq->replies, reply)) {
1249 pthread_mutex_unlock(&to->replyq->mutex);
1252 debug(DBG_ERR, "sendreply: malloc failed");
1257 debug(DBG_DBG, "signalling server writer");
1258 pthread_cond_signal(&to->replyq->cond);
1260 pthread_mutex_unlock(&to->replyq->mutex);
1263 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1264 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1265 static unsigned char first = 1;
1266 static EVP_MD_CTX mdctx;
1267 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1268 unsigned int md_len;
1269 uint8_t i, offset = 0, out[128];
1271 pthread_mutex_lock(&lock);
1273 EVP_MD_CTX_init(&mdctx);
1279 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1280 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1281 !EVP_DigestUpdate(&mdctx, input, 16) ||
1282 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1284 pthread_mutex_unlock(&lock);
1287 for (i = 0; i < 16; i++)
1288 out[offset + i] = hash[i] ^ in[offset + i];
1289 input = out + offset - 16;
1294 memcpy(in, out, len);
1295 pthread_mutex_unlock(&lock);
1299 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1300 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1301 static unsigned char first = 1;
1302 static EVP_MD_CTX mdctx;
1303 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1304 unsigned int md_len;
1305 uint8_t i, offset = 0, out[128];
1307 pthread_mutex_lock(&lock);
1309 EVP_MD_CTX_init(&mdctx);
1315 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1316 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1317 !EVP_DigestUpdate(&mdctx, input, 16) ||
1318 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1320 pthread_mutex_unlock(&lock);
1323 for (i = 0; i < 16; i++)
1324 out[offset + i] = hash[i] ^ in[offset + i];
1325 input = in + offset;
1330 memcpy(in, out, len);
1331 pthread_mutex_unlock(&lock);
1335 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1336 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1337 static unsigned char first = 1;
1338 static EVP_MD_CTX mdctx;
1339 unsigned char hash[EVP_MAX_MD_SIZE];
1340 unsigned int md_len;
1343 pthread_mutex_lock(&lock);
1345 EVP_MD_CTX_init(&mdctx);
1350 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
1351 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
1352 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
1355 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1356 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1357 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1358 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1359 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1360 pthread_mutex_unlock(&lock);
1365 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1368 for (i = 0; i < 16; i++)
1371 for (offset = 16; offset < len; offset += 16) {
1373 printf("text + offset - 16 c(%d): ", offset / 16);
1374 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1376 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1377 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1378 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1379 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1381 pthread_mutex_unlock(&lock);
1385 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1388 for (i = 0; i < 16; i++)
1389 text[offset + i] ^= hash[i];
1393 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
1396 pthread_mutex_unlock(&lock);
1400 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1401 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1402 static unsigned char first = 1;
1403 static EVP_MD_CTX mdctx;
1404 unsigned char hash[EVP_MAX_MD_SIZE];
1405 unsigned int md_len;
1409 pthread_mutex_lock(&lock);
1411 EVP_MD_CTX_init(&mdctx);
1416 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
1417 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
1418 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
1421 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1422 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1423 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1424 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1425 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1426 pthread_mutex_unlock(&lock);
1431 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1434 for (i = 0; i < 16; i++)
1435 plain[i] = text[i] ^ hash[i];
1437 for (offset = 16; offset < len; offset += 16) {
1439 printf("text + offset - 16 c(%d): ", offset / 16);
1440 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1442 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1443 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1444 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1445 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1447 pthread_mutex_unlock(&lock);
1451 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1454 for (i = 0; i < 16; i++)
1455 plain[offset + i] = text[offset + i] ^ hash[i];
1458 memcpy(text, plain, len);
1460 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
1463 pthread_mutex_unlock(&lock);
1467 struct realm *id2realm(struct list *realmlist, char *id) {
1468 struct list_node *entry;
1469 struct realm *realm, *subrealm = NULL;
1471 /* need to do locking for subrealms and check subrealm timers */
1472 for (entry = list_first(realmlist); entry; entry = list_next(entry)) {
1473 realm = (struct realm *)entry->data;
1474 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
1475 pthread_mutex_lock(&realm->subrealms_mutex);
1476 if (realm->subrealms)
1477 subrealm = id2realm(realm->subrealms, id);
1478 pthread_mutex_unlock(&realm->subrealms_mutex);
1479 return subrealm ? subrealm : realm;
1485 int rqinqueue(struct server *to, struct client *from, uint8_t id, uint8_t code) {
1486 struct request *rq = to->requests, *end;
1488 pthread_mutex_lock(&to->newrq_mutex);
1489 for (end = rq + MAX_REQUESTS; rq < end; rq++)
1490 if (rq->buf && !rq->received && rq->origid == id && rq->from == from && *rq->buf == code)
1492 pthread_mutex_unlock(&to->newrq_mutex);
1497 int attrvalidate(unsigned char *attrs, int length) {
1498 while (length > 1) {
1499 if (ATTRLEN(attrs) < 2) {
1500 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1503 length -= ATTRLEN(attrs);
1505 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1508 attrs += ATTRLEN(attrs);
1511 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1515 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1516 if (len < 16 || len > 128 || len % 16) {
1517 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1521 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1522 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1526 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
1528 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1529 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1535 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1538 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1539 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1542 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1543 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1549 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1550 char *oldsecret, char *newsecret) {
1551 unsigned char *attr;
1553 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1554 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1555 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1561 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint8_t subattr) {
1565 for (; attrs[0]; attrs += 2)
1566 if (attrs[0] == vendor && attrs[1] == subattr)
1571 int dovendorrewrite(uint8_t *attrs, uint16_t length, uint32_t *removevendorattrs) {
1572 uint8_t alen, sublen, rmlen = 0;
1573 uint32_t vendor = *(uint32_t *)ATTRVAL(attrs);
1576 if (!removevendorattrs)
1579 while (*removevendorattrs && *removevendorattrs != vendor)
1580 removevendorattrs += 2;
1581 if (!*removevendorattrs)
1584 alen = ATTRLEN(attrs);
1586 if (findvendorsubattr(removevendorattrs, vendor, -1)) {
1587 /* remove entire vendor attribute */
1588 memmove(attrs, attrs + alen, length - alen);
1593 subattrs = ATTRVAL(attrs) + 4;
1595 if (!attrvalidate(subattrs, sublen)) {
1596 debug(DBG_WARN, "dovendorrewrite: vendor attribute validation failed, no rewrite");
1601 while (sublen > 1) {
1602 alen = ATTRLEN(subattrs);
1605 if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) {
1606 memmove(subattrs, subattrs + alen, length);
1612 ATTRLEN(attrs) -= rmlen;
1616 void dorewrite(uint8_t *buf, struct rewrite *rewrite) {
1617 uint8_t *attrs, alen;
1618 uint16_t len, rmlen = 0;
1620 if (!rewrite || (!rewrite->removeattrs && !rewrite->removevendorattrs))
1623 len = RADLEN(buf) - 20;
1626 alen = ATTRLEN(attrs);
1628 if (rewrite->removeattrs && strchr((char *)rewrite->removeattrs, ATTRTYPE(attrs))) {
1629 memmove(attrs, attrs + alen, len);
1631 } else if (ATTRTYPE(attrs) == RAD_Attr_Vendor_Specific && rewrite->removevendorattrs)
1632 rmlen += dovendorrewrite(attrs, len, rewrite->removevendorattrs);
1637 ((uint16_t *)buf)[1] = htons(RADLEN(buf) - rmlen);
1640 /* returns a pointer to the resized attribute value */
1641 uint8_t *resizeattr(uint8_t **buf, uint8_t newvallen, uint8_t type) {
1642 uint8_t *attrs, *attr, vallen;
1646 len = RADLEN(*buf) - 20;
1649 attr = attrget(attrs, len, type);
1653 vallen = ATTRVALLEN(attr);
1654 if (vallen == newvallen)
1657 len += newvallen - vallen;
1658 if (newvallen > vallen) {
1659 new = realloc(*buf, len + 20);
1661 debug(DBG_ERR, "resizeattr: malloc failed");
1670 memmove(attr + 2 + newvallen, attr + 2 + vallen, len - (attr - attrs + newvallen));
1671 attr[1] = newvallen + 2;
1672 ((uint16_t *)*buf)[1] = htons(len + 20);
1676 int rewriteusername(struct request *rq, char *in) {
1677 size_t nmatch = 10, reslen = 0, start = 0;
1678 regmatch_t pmatch[10], *pfield;
1680 unsigned char *result;
1681 char *out = rq->from->conf->rewriteattrreplacement;
1683 if (regexec(rq->from->conf->rewriteattrregex, in, nmatch, pmatch, 0)) {
1684 debug(DBG_DBG, "rewriteattr: username not matching, no rewrite");
1688 rq->origusername = stringcopy(in, 0);
1689 if (!rq->origusername)
1692 for (i = start; out[i]; i++) {
1693 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1694 pfield = &pmatch[out[i + 1] - '0'];
1695 if (pfield->rm_so >= 0) {
1696 reslen += i - start + pfield->rm_eo - pfield->rm_so;
1702 reslen += i - start;
1704 result = resizeattr(&rq->buf, reslen, RAD_Attr_User_Name);
1710 for (i = start; out[i]; i++) {
1711 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1712 pfield = &pmatch[out[i + 1] - '0'];
1713 if (pfield->rm_so >= 0) {
1714 memcpy(result + reslen, out + start, i - start);
1715 reslen += i - start;
1716 memcpy(result + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1717 reslen += pfield->rm_eo - pfield->rm_so;
1724 memcpy(result + reslen, out + start, i - start);
1725 reslen += i - start;
1726 memcpy(in, result, reslen);
1731 const char *radmsgtype2string(uint8_t code) {
1732 static const char *rad_msg_names[] = {
1733 "", "Access-Request", "Access-Accept", "Access-Reject",
1734 "Accounting-Request", "Accounting-Response", "", "",
1735 "", "", "", "Access-Challenge",
1736 "Status-Server", "Status-Client"
1738 return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown";
1741 void acclog(unsigned char *attrs, int length, char *host) {
1742 unsigned char *attr;
1745 attr = attrget(attrs, length, RAD_Attr_User_Name);
1747 debug(DBG_INFO, "acclog: accounting-request from %s without username attribute", host);
1750 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1751 username[ATTRVALLEN(attr)] = '\0';
1752 debug(DBG_INFO, "acclog: accounting-request from %s with username: %s", host, username);
1755 void respondaccounting(struct request *rq) {
1756 unsigned char *resp;
1760 debug(DBG_ERR, "respondstatusserver: malloc failed");
1763 memcpy(resp, rq->buf, 20);
1764 resp[0] = RAD_Accounting_Response;
1767 debug(DBG_DBG, "respondaccounting: responding to %s", rq->from->conf->host);
1768 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1771 void respondstatusserver(struct request *rq) {
1772 unsigned char *resp;
1776 debug(DBG_ERR, "respondstatusserver: malloc failed");
1779 memcpy(resp, rq->buf, 20);
1780 resp[0] = RAD_Access_Accept;
1783 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->conf->host);
1784 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1787 void respondreject(struct request *rq, char *message) {
1788 unsigned char *resp;
1791 if (message && *message)
1792 len += 2 + strlen(message);
1796 debug(DBG_ERR, "respondreject: malloc failed");
1799 memcpy(resp, rq->buf, 20);
1800 resp[0] = RAD_Access_Reject;
1801 *(uint16_t *)(resp + 2) = htons(len);
1802 if (message && *message) {
1803 resp[20] = RAD_Attr_Reply_Message;
1804 resp[21] = len - 20;
1805 memcpy(resp + 22, message, len - 22);
1807 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1810 struct clsrvconf *choosesrvconf(struct list *srvconfs) {
1811 struct list_node *entry;
1812 struct clsrvconf *server, *best = NULL, *first = NULL;
1814 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1815 server = (struct clsrvconf *)entry->data;
1816 if (!server->servers)
1820 if (!server->servers->connectionok)
1822 if (!server->servers->loststatsrv)
1828 if (server->servers->loststatsrv < best->servers->loststatsrv)
1831 return best ? best : first;
1834 struct server *findserver(struct realm **realm, char *id, uint8_t acc) {
1835 struct clsrvconf *srvconf;
1837 *realm = id2realm(realms, id);
1840 debug(DBG_DBG, "found matching realm: %s", (*realm)->name);
1841 srvconf = choosesrvconf(acc ? (*realm)->accsrvconfs : (*realm)->srvconfs);
1842 if (!acc && !srvconf->servers)
1843 adddynamicrealmserver(*realm, srvconf, id);
1844 return srvconf->servers;
1847 void radsrv(struct request *rq) {
1848 uint8_t code, id, *auth, *attrs, *attr;
1850 struct server *to = NULL;
1852 unsigned char newauth[16];
1853 struct realm *realm = NULL;
1855 code = *(uint8_t *)rq->buf;
1856 id = *(uint8_t *)(rq->buf + 1);
1857 len = RADLEN(rq->buf);
1858 auth = (uint8_t *)(rq->buf + 4);
1860 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1862 if (code != RAD_Access_Request && code != RAD_Status_Server && code != RAD_Accounting_Request) {
1863 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1868 attrs = rq->buf + 20;
1870 if (!attrvalidate(attrs, len)) {
1871 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1875 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1876 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(rq->buf, ATTRVAL(attr), rq->from->conf->secret))) {
1877 debug(DBG_WARN, "radsrv: message authentication failed");
1881 if (code == RAD_Status_Server) {
1882 respondstatusserver(rq);
1886 /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */
1888 if (rq->from->conf->rewrite) {
1889 dorewrite(rq->buf, rq->from->conf->rewrite);
1890 len = RADLEN(rq->buf) - 20;
1893 attr = attrget(attrs, len, RAD_Attr_User_Name);
1895 if (code == RAD_Accounting_Request) {
1896 acclog(attrs, len, rq->from->conf->host);
1897 respondaccounting(rq);
1899 debug(DBG_WARN, "radsrv: ignoring access request, no username attribute");
1902 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1903 username[ATTRVALLEN(attr)] = '\0';
1905 if (rq->from->conf->rewriteattrregex) {
1906 if (!rewriteusername(rq, username)) {
1907 debug(DBG_WARN, "radsrv: username malloc failed, ignoring request");
1910 len = RADLEN(rq->buf) - 20;
1911 auth = (uint8_t *)(rq->buf + 4);
1912 attrs = rq->buf + 20;
1915 if (rq->origusername)
1916 debug(DBG_DBG, "%s with username: %s (originally %s)", radmsgtype2string(code), username, rq->origusername);
1918 debug(DBG_DBG, "%s with username: %s", radmsgtype2string(code), username);
1920 to = findserver(&realm, username, code == RAD_Accounting_Request);
1922 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1926 if (realm->message && code == RAD_Access_Request) {
1927 debug(DBG_INFO, "radsrv: sending reject to %s for %s", rq->from->conf->host, username);
1928 respondreject(rq, realm->message);
1933 if (rqinqueue(to, rq->from, id, code)) {
1934 debug(DBG_INFO, "radsrv: already got %s from host %s with id %d, ignoring",
1935 radmsgtype2string(code), rq->from->conf->host, id);
1939 if (!RAND_bytes(newauth, 16)) {
1940 debug(DBG_WARN, "radsrv: failed to generate random auth");
1945 printfchars(NULL, "auth", "%02x ", auth, 16);
1948 attr = attrget(attrs, len, RAD_Attr_User_Password);
1950 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1951 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1955 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1957 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1958 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1963 memcpy(rq->origauth, auth, 16);
1964 memcpy(auth, newauth, 16);
1972 int replyh(struct server *server, unsigned char *buf) {
1973 struct client *from;
1976 unsigned char *messageauth, *subattrs, *attrs, *attr, *username;
1977 struct sockaddr_storage fromsa;
1980 server->connectionok = 1;
1981 server->loststatsrv = 0;
1983 i = buf[1]; /* i is the id */
1985 if (*buf != RAD_Access_Accept && *buf != RAD_Access_Reject && *buf != RAD_Access_Challenge
1986 && *buf != RAD_Accounting_Response) {
1987 debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(*buf));
1990 debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(*buf), i);
1992 rq = server->requests + i;
1994 pthread_mutex_lock(&server->newrq_mutex);
1995 if (!rq->buf || !rq->tries) {
1996 pthread_mutex_unlock(&server->newrq_mutex);
1997 debug(DBG_INFO, "replyh: no matching request sent with this id, ignoring reply");
2002 pthread_mutex_unlock(&server->newrq_mutex);
2003 debug(DBG_INFO, "replyh: already received, ignoring reply");
2007 if (!validauth(buf, rq->buf + 4, (unsigned char *)server->conf->secret)) {
2008 pthread_mutex_unlock(&server->newrq_mutex);
2009 debug(DBG_WARN, "replyh: invalid auth, ignoring reply");
2013 len = RADLEN(buf) - 20;
2016 if (!attrvalidate(attrs, len)) {
2017 pthread_mutex_unlock(&server->newrq_mutex);
2018 debug(DBG_WARN, "replyh: attribute validation failed, ignoring reply");
2022 /* Message Authenticator */
2023 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2025 if (ATTRVALLEN(messageauth) != 16) {
2026 pthread_mutex_unlock(&server->newrq_mutex);
2027 debug(DBG_WARN, "replyh: illegal message auth attribute length, ignoring reply");
2030 memcpy(tmp, buf + 4, 16);
2031 memcpy(buf + 4, rq->buf + 4, 16);
2032 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->conf->secret)) {
2033 pthread_mutex_unlock(&server->newrq_mutex);
2034 debug(DBG_WARN, "replyh: message authentication failed, ignoring reply");
2037 memcpy(buf + 4, tmp, 16);
2038 debug(DBG_DBG, "replyh: message auth ok");
2041 if (*rq->buf == RAD_Status_Server) {
2043 pthread_mutex_unlock(&server->newrq_mutex);
2044 debug(DBG_DBG, "replyh: got status server response from %s", server->conf->host);
2050 pthread_mutex_unlock(&server->newrq_mutex);
2051 debug(DBG_INFO, "replyh: client gone, ignoring reply");
2055 if (server->conf->rewrite) {
2056 dorewrite(buf, server->conf->rewrite);
2057 len = RADLEN(buf) - 20;
2061 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
2062 if (ATTRVALLEN(attr) <= 4)
2065 if (attr[2] != 0 || attr[3] != 0 || attr[4] != 1 || attr[5] != 55) /* 311 == MS */
2068 sublen = ATTRVALLEN(attr) - 4;
2069 subattrs = ATTRVAL(attr) + 4;
2070 if (!attrvalidate(subattrs, sublen) ||
2071 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
2072 rq, server->conf->secret, from->conf->secret) ||
2073 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
2074 rq, server->conf->secret, from->conf->secret))
2078 pthread_mutex_unlock(&server->newrq_mutex);
2079 debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply");
2083 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject || *buf == RAD_Accounting_Response) {
2084 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_User_Name);
2086 memcpy(tmp, ATTRVAL(attr), ATTRVALLEN(attr));
2087 tmp[ATTRVALLEN(attr)] = '\0';
2088 if (rq->origusername)
2089 debug(DBG_INFO, "%s for %s (originally %s) from %s", radmsgtype2string(*buf), tmp,
2090 rq->origusername, server->conf->host);
2092 debug(DBG_INFO, "%s for %s from %s", radmsgtype2string(*buf), tmp, server->conf->host);
2096 buf[1] = (char)rq->origid;
2097 memcpy(buf + 4, rq->origauth, 16);
2099 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
2102 if (rq->origusername) {
2103 username = resizeattr(&buf, strlen(rq->origusername), RAD_Attr_User_Name);
2105 pthread_mutex_unlock(&server->newrq_mutex);
2106 debug(DBG_WARN, "replyh: malloc failed, ignoring reply");
2109 memcpy(username, rq->origusername, strlen(rq->origusername));
2110 len = RADLEN(buf) - 20;
2113 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2117 if (!createmessageauth(buf, ATTRVAL(messageauth), from->conf->secret)) {
2118 pthread_mutex_unlock(&server->newrq_mutex);
2119 debug(DBG_WARN, "replyh: failed to create authenticator, malloc failed?, ignoring reply");
2122 debug(DBG_DBG, "replyh: computed messageauthattr");
2125 if (from->conf->type == 'U')
2126 fromsa = rq->fromsa;
2127 /* once we set received = 1, rq may be reused */
2130 debug(DBG_INFO, "replyh: passing reply to client %s", from->conf->name);
2131 sendreply(from, buf, from->conf->type == 'U' ? &fromsa : NULL);
2132 pthread_mutex_unlock(&server->newrq_mutex);
2136 void *udpclientrd(void *arg) {
2137 struct server *server;
2139 int *s = (int *)arg;
2143 buf = radudpget(*s, NULL, &server, NULL);
2144 if (!replyh(server, buf))
2149 void *tlsclientrd(void *arg) {
2150 struct server *server = (struct server *)arg;
2152 struct timeval lastconnecttry;
2155 /* yes, lastconnecttry is really necessary */
2156 lastconnecttry = server->lastconnecttry;
2157 buf = radtlsget(server->ssl);
2159 tlsconnect(server, &lastconnecttry, "clientrd");
2163 if (!replyh(server, buf))
2168 /* code for removing state not finished */
2169 void *clientwr(void *arg) {
2170 struct server *server = (struct server *)arg;
2172 pthread_t tlsclientrdth;
2175 struct timeval now, lastsend;
2176 struct timespec timeout;
2177 struct request statsrvrq;
2178 unsigned char statsrvbuf[38];
2179 struct clsrvconf *conf;
2181 conf = server->conf;
2183 if (server->dynamiclookuparg) {
2184 dynamicconfig(server);
2185 conf = server->conf;
2190 if (!conf->addrinfo && !resolvepeer(conf, 0)) {
2191 debug(DBG_WARN, "failed to resolve host %s port %s", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
2195 memset(&timeout, 0, sizeof(struct timespec));
2197 if (conf->statusserver) {
2198 memset(&statsrvrq, 0, sizeof(struct request));
2199 memset(statsrvbuf, 0, sizeof(statsrvbuf));
2200 statsrvbuf[0] = RAD_Status_Server;
2202 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
2203 statsrvbuf[21] = 18;
2204 gettimeofday(&lastsend, NULL);
2207 if (conf->type == 'U') {
2208 server->connectionok = 1;
2210 tlsconnect(server, NULL, "new client");
2211 server->connectionok = 1;
2212 if (pthread_create(&tlsclientrdth, NULL, tlsclientrd, (void *)server)) {
2213 debug(DBG_ERR, "clientwr: pthread_create failed");
2219 pthread_mutex_lock(&server->newrq_mutex);
2220 if (!server->newrq) {
2221 gettimeofday(&now, NULL);
2222 if (conf->statusserver) {
2223 /* random 0-7 seconds */
2224 RAND_bytes(&rnd, 1);
2226 if (!timeout.tv_sec || timeout.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
2227 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
2229 if (timeout.tv_sec) {
2230 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
2231 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
2234 debug(DBG_DBG, "clientwr: waiting for new request");
2235 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
2238 if (server->newrq) {
2239 debug(DBG_DBG, "clientwr: got new request");
2242 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
2243 pthread_mutex_unlock(&server->newrq_mutex);
2245 for (i = 0; i < MAX_REQUESTS; i++) {
2246 pthread_mutex_lock(&server->newrq_mutex);
2247 while (i < MAX_REQUESTS && !server->requests[i].buf)
2249 if (i == MAX_REQUESTS) {
2250 pthread_mutex_unlock(&server->newrq_mutex);
2253 rq = server->requests + i;
2256 debug(DBG_DBG, "clientwr: packet %d in queue is marked as received", i);
2258 debug(DBG_DBG, "clientwr: freeing received packet %d from queue", i);
2260 /* setting this to NULL means that it can be reused */
2263 pthread_mutex_unlock(&server->newrq_mutex);
2267 gettimeofday(&now, NULL);
2268 if (now.tv_sec < rq->expiry.tv_sec) {
2269 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2270 timeout.tv_sec = rq->expiry.tv_sec;
2271 pthread_mutex_unlock(&server->newrq_mutex);
2275 if (rq->tries == (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2276 ? 1 : REQUEST_RETRIES)) {
2277 debug(DBG_DBG, "clientwr: removing expired packet from queue");
2278 if (*rq->buf == RAD_Status_Server) {
2279 debug(DBG_WARN, "clientwr: no status server response, %s dead?", conf->host);
2280 if (server->loststatsrv < 255)
2281 server->loststatsrv++;
2284 /* setting this to NULL means that it can be reused */
2286 pthread_mutex_unlock(&server->newrq_mutex);
2289 pthread_mutex_unlock(&server->newrq_mutex);
2291 rq->expiry.tv_sec = now.tv_sec +
2292 (*rq->buf == RAD_Status_Server || conf->type == 'T'
2293 ? REQUEST_EXPIRY : REQUEST_EXPIRY / REQUEST_RETRIES);
2294 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2295 timeout.tv_sec = rq->expiry.tv_sec;
2297 clientradput(server, server->requests[i].buf);
2298 gettimeofday(&lastsend, NULL);
2300 if (conf->statusserver) {
2301 gettimeofday(&now, NULL);
2302 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
2303 if (!RAND_bytes(statsrvbuf + 4, 16)) {
2304 debug(DBG_WARN, "clientwr: failed to generate random auth");
2307 statsrvrq.buf = malloc(sizeof(statsrvbuf));
2308 if (!statsrvrq.buf) {
2309 debug(DBG_ERR, "clientwr: malloc failed");
2312 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
2313 debug(DBG_DBG, "clientwr: sending status server to %s", conf->host);
2314 lastsend.tv_sec = now.tv_sec;
2315 sendrq(server, &statsrvrq);
2320 /* this code needs more work */
2321 if (server->dynamiclookuparg) {
2322 /* remove subrealms using this server */
2323 /* need to free server->conf etc */
2327 if (conf->addrinfo) {
2328 freeaddrinfo(conf->addrinfo);
2329 conf->addrinfo = NULL;
2331 /* add this once realm removal in place
2333 server->conf = NULL;
2337 freeserver(server, 1);
2341 void *udpserverwr(void *arg) {
2342 struct replyq *replyq = udp_server_replyq;
2343 struct reply *reply;
2346 pthread_mutex_lock(&replyq->mutex);
2347 while (!(reply = (struct reply *)list_shift(replyq->replies))) {
2348 debug(DBG_DBG, "udp server writer, waiting for signal");
2349 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2350 debug(DBG_DBG, "udp server writer, got signal");
2352 pthread_mutex_unlock(&replyq->mutex);
2354 if (sendto(udp_server_sock, reply->buf, RADLEN(reply->buf), 0,
2355 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
2356 debug(DBG_WARN, "sendudp: send failed");
2362 void *udpserverrd(void *arg) {
2364 pthread_t udpserverwrth;
2365 struct clsrvconf *listenres;
2367 listenres = resolve_hostport('U', options.listenudp, DEFAULT_UDP_PORT);
2368 if ((udp_server_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2369 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2371 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
2372 listenres->host ? listenres->host : "*", listenres->port);
2373 freeclsrvres(listenres);
2375 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
2376 debugx(1, DBG_ERR, "pthread_create failed");
2379 memset(&rq, 0, sizeof(struct request));
2380 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
2385 void *udpaccserverrd(void *arg) {
2387 struct clsrvconf *listenres;
2389 listenres = resolve_hostport('U', options.listenaccudp, DEFAULT_UDP_PORT);
2390 if ((udp_accserver_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2391 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2393 debug(DBG_WARN, "udpaccserverrd: listening for UDP on %s:%s",
2394 listenres->host ? listenres->host : "*", listenres->port);
2395 freeclsrvres(listenres);
2398 memset(&rq, 0, sizeof(struct request));
2399 rq.buf = radudpget(udp_accserver_sock, &rq.from, NULL, &rq.fromsa);
2400 if (*(uint8_t *)rq.buf == RAD_Accounting_Request) {
2404 debug(DBG_INFO, "udpaccserverrd: got something other than accounting-request, ignoring");
2409 void *tlsserverwr(void *arg) {
2411 unsigned long error;
2412 struct client *client = (struct client *)arg;
2413 struct replyq *replyq;
2414 struct reply *reply;
2416 debug(DBG_DBG, "tlsserverwr starting for %s", client->conf->host);
2417 replyq = client->replyq;
2419 pthread_mutex_lock(&replyq->mutex);
2420 while (!list_first(replyq->replies)) {
2422 debug(DBG_DBG, "tls server writer, waiting for signal");
2423 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2424 debug(DBG_DBG, "tls server writer, got signal");
2427 /* ssl might have changed while waiting */
2428 pthread_mutex_unlock(&replyq->mutex);
2429 debug(DBG_DBG, "tlsserverwr: exiting as requested");
2433 reply = (struct reply *)list_shift(replyq->replies);
2434 pthread_mutex_unlock(&replyq->mutex);
2435 cnt = SSL_write(client->ssl, reply->buf, RADLEN(reply->buf));
2437 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
2438 cnt, RADLEN(reply->buf));
2440 while ((error = ERR_get_error()))
2441 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
2447 void tlsserverrd(struct client *client) {
2449 pthread_t tlsserverwrth;
2451 debug(DBG_DBG, "tlsserverrd starting for %s", client->conf->host);
2453 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
2454 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
2459 memset(&rq, 0, sizeof(struct request));
2460 rq.buf = radtlsget(client->ssl);
2463 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->conf->host);
2468 debug(DBG_ERR, "tlsserverrd: connection lost");
2469 /* stop writer by setting ssl to NULL and give signal in case waiting for data */
2471 pthread_mutex_lock(&client->replyq->mutex);
2472 pthread_cond_signal(&client->replyq->cond);
2473 pthread_mutex_unlock(&client->replyq->mutex);
2474 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
2475 pthread_join(tlsserverwrth, NULL);
2476 removeclientrqs(client);
2477 debug(DBG_DBG, "tlsserverrd for %s exiting", client->conf->host);
2480 void *tlsservernew(void *arg) {
2482 struct sockaddr_storage from;
2483 size_t fromlen = sizeof(from);
2484 struct clsrvconf *conf;
2485 struct list_node *cur = NULL;
2488 unsigned long error;
2489 struct client *client;
2492 if (getpeername(s, (struct sockaddr *)&from, &fromlen)) {
2493 debug(DBG_DBG, "tlsserverrd: getpeername failed, exiting");
2496 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
2498 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2500 ssl = SSL_new(conf->ssl_ctx);
2503 if (SSL_accept(ssl) <= 0) {
2504 while ((error = ERR_get_error()))
2505 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
2506 debug(DBG_ERR, "SSL_accept failed");
2509 cert = verifytlscert(ssl);
2515 if (verifyconfcert(cert, conf)) {
2517 client = addclient(conf);
2520 tlsserverrd(client);
2521 removeclient(client);
2523 debug(DBG_WARN, "Failed to create new client instance");
2526 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2528 debug(DBG_WARN, "ignoring request, no matching TLS client");
2534 shutdown(s, SHUT_RDWR);
2540 pthread_t tlsserverth;
2542 struct sockaddr_storage from;
2543 size_t fromlen = sizeof(from);
2544 struct clsrvconf *listenres;
2546 listenres = resolve_hostport('T', options.listentcp, DEFAULT_TLS_PORT);
2547 if ((s = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2548 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
2550 debug(DBG_WARN, "listening for incoming TCP on %s:%s", listenres->host ? listenres->host : "*", listenres->port);
2551 freeclsrvres(listenres);
2555 snew = accept(s, (struct sockaddr *)&from, &fromlen);
2557 debug(DBG_WARN, "accept failed");
2560 if (pthread_create(&tlsserverth, NULL, tlsservernew, (void *)&snew)) {
2561 debug(DBG_ERR, "tlslistener: pthread_create failed");
2562 shutdown(snew, SHUT_RDWR);
2566 pthread_detach(tlsserverth);
2571 void tlsadd(char *value, char *cacertfile, char *cacertpath, char *certfile, char *certkeyfile, char *certkeypwd) {
2574 STACK_OF(X509_NAME) *calist;
2576 unsigned long error;
2578 if (!certfile || !certkeyfile)
2579 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified in TLS context %s", value);
2581 if (!cacertfile && !cacertpath)
2582 debugx(1, DBG_ERR, "CA Certificate file or path need to be specified in TLS context %s", value);
2585 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
2586 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
2587 for (i = 0; i < CRYPTO_num_locks(); i++) {
2588 ssl_lock_count[i] = 0;
2589 pthread_mutex_init(&ssl_locks[i], NULL);
2591 CRYPTO_set_id_callback(ssl_thread_id);
2592 CRYPTO_set_locking_callback(ssl_locking_callback);
2594 SSL_load_error_strings();
2597 while (!RAND_status()) {
2598 time_t t = time(NULL);
2599 pid_t pid = getpid();
2600 RAND_seed((unsigned char *)&t, sizeof(time_t));
2601 RAND_seed((unsigned char *)&pid, sizeof(pid));
2604 ctx = SSL_CTX_new(TLSv1_method());
2606 SSL_CTX_set_default_passwd_cb_userdata(ctx, certkeypwd);
2607 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
2609 if (!SSL_CTX_use_certificate_chain_file(ctx, certfile) ||
2610 !SSL_CTX_use_PrivateKey_file(ctx, certkeyfile, SSL_FILETYPE_PEM) ||
2611 !SSL_CTX_check_private_key(ctx) ||
2612 !SSL_CTX_load_verify_locations(ctx, cacertfile, cacertpath)) {
2613 while ((error = ERR_get_error()))
2614 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2615 debugx(1, DBG_ERR, "Error initialising SSL/TLS in TLS context %s", value);
2618 calist = cacertfile ? SSL_load_client_CA_file(cacertfile) : NULL;
2619 if (!cacertfile || calist) {
2622 calist = sk_X509_NAME_new_null();
2623 if (!SSL_add_dir_cert_subjects_to_stack(calist, cacertpath)) {
2624 sk_X509_NAME_free(calist);
2630 while ((error = ERR_get_error()))
2631 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2632 debugx(1, DBG_ERR, "Error adding CA subjects in TLS context %s", value);
2634 SSL_CTX_set_client_CA_list(ctx, calist);
2636 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
2637 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
2639 new = malloc(sizeof(struct tls));
2640 if (!new || !list_push(tlsconfs, new))
2641 debugx(1, DBG_ERR, "malloc failed");
2643 memset(new, 0, sizeof(struct tls));
2644 new->name = stringcopy(value, 0);
2646 debugx(1, DBG_ERR, "malloc failed");
2648 debug(DBG_DBG, "tlsadd: added TLS context %s", value);
2651 SSL_CTX *tlsgetctx(char *alt1, char *alt2) {
2652 struct list_node *entry;
2653 struct tls *t, *t1 = NULL, *t2 = NULL;
2655 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2656 t = (struct tls *)entry->data;
2657 if (!strcasecmp(t->name, alt1)) {
2661 if (!t2 && alt2 && !strcasecmp(t->name, alt2))
2671 struct list *addsrvconfs(char *value, char **names) {
2672 struct list *conflist;
2674 struct list_node *entry;
2675 struct clsrvconf *conf;
2677 if (!names || !*names)
2680 conflist = list_create();
2682 debug(DBG_ERR, "malloc failed");
2686 for (n = 0; names[n]; n++) {
2687 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2688 conf = (struct clsrvconf *)entry->data;
2689 if (!strcasecmp(names[n], conf->name))
2693 debug(DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]);
2694 list_destroy(conflist);
2697 if (!list_push(conflist, conf)) {
2698 debug(DBG_ERR, "malloc failed");
2699 list_destroy(conflist);
2702 debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value);
2707 void freerealm(struct realm *realm) {
2711 if (realm->srvconfs) {
2712 /* emptying list without freeing data */
2713 while (list_shift(realm->srvconfs));
2714 list_destroy(realm->srvconfs);
2716 if (realm->accsrvconfs) {
2717 /* emptying list without freeing data */
2718 while (list_shift(realm->accsrvconfs));
2719 list_destroy(realm->accsrvconfs);
2724 struct realm *addrealm(struct list *realmlist, char *value, char **servers, char **accservers, char *message) {
2726 struct realm *realm;
2727 char *s, *regex = NULL;
2729 if (*value == '/') {
2730 /* regexp, remove optional trailing / if present */
2731 if (value[strlen(value) - 1] == '/')
2732 value[strlen(value) - 1] = '\0';
2734 /* not a regexp, let us make it one */
2735 if (*value == '*' && !value[1])
2736 regex = stringcopy(".*", 0);
2738 for (n = 0, s = value; *s;)
2741 regex = malloc(strlen(value) + n + 3);
2744 for (n = 1, s = value; *s; s++) {
2754 debug(DBG_ERR, "malloc failed");
2757 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2760 realm = malloc(sizeof(struct realm));
2762 debug(DBG_ERR, "malloc failed");
2765 memset(realm, 0, sizeof(struct realm));
2766 realm->name = stringcopy(value, 0);
2768 debug(DBG_ERR, "malloc failed");
2771 if (message && strlen(message) > 253) {
2772 debug(DBG_ERR, "ReplyMessage can be at most 253 bytes");
2775 realm->message = message;
2777 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_ICASE | REG_NOSUB)) {
2778 debug(DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2782 if (servers && *servers) {
2783 realm->srvconfs = addsrvconfs(value, servers);
2784 if (!realm->srvconfs)
2788 if (accservers && *accservers) {
2789 realm->accsrvconfs = addsrvconfs(value, accservers);
2790 if (!realm->accsrvconfs)
2794 if (pthread_mutex_init(&realm->subrealms_mutex, NULL)) {
2795 debug(DBG_ERR, "mutex init failed");
2799 if (!list_push(realmlist, realm)) {
2800 debug(DBG_ERR, "malloc failed");
2801 pthread_mutex_destroy(&realm->subrealms_mutex);
2805 debug(DBG_DBG, "addrealm: added realm %s", value);
2815 for (n = 0; servers[n]; n++)
2820 for (n = 0; accservers[n]; n++)
2821 free(accservers[n]);
2827 void adddynamicrealmserver(struct realm *realm, struct clsrvconf *conf, char *id) {
2828 struct clsrvconf *srvconf;
2829 struct realm *newrealm = NULL;
2832 if (!conf->dynamiclookupcommand)
2835 /* create dynamic for the realm (string after last @, exit if nothing after @ */
2836 realmname = strrchr(id, '@');
2843 pthread_mutex_lock(&realm->subrealms_mutex);
2844 /* exit if we now already got a matching subrealm */
2845 if (id2realm(realm->subrealms, id))
2847 srvconf = malloc(sizeof(struct clsrvconf));
2849 debug(DBG_ERR, "malloc failed");
2853 if (!addserver(srvconf))
2856 if (!realm->subrealms)
2857 realm->subrealms = list_create();
2858 if (!realm->subrealms)
2860 newrealm = addrealm(realm->subrealms, realmname, NULL, NULL, NULL);
2864 /* add server and accserver to newrealm */
2865 newrealm->srvconfs = list_create();
2866 if (!newrealm->srvconfs || !list_push(newrealm->srvconfs, srvconf)) {
2867 debug(DBG_ERR, "malloc failed");
2870 newrealm->accsrvconfs = list_create();
2871 if (!newrealm->accsrvconfs || !list_push(newrealm->accsrvconfs, srvconf)) {
2872 debug(DBG_ERR, "malloc failed");
2876 srvconf->servers->dynamiclookuparg = stringcopy(realmname, 0);
2878 if (pthread_create(&srvconf->servers->clientth, NULL, clientwr, (void *)(srvconf->servers))) {
2879 debug(DBG_ERR, "pthread_create failed");
2887 list_removedata(realm->subrealms, newrealm);
2888 freerealm(newrealm);
2890 freeserver(srvconf->servers, 1);
2892 debug(DBG_ERR, "failed to create dynamic server");
2895 pthread_mutex_unlock(&realm->subrealms_mutex);
2898 void dynamicconfig(struct server *server) {
2901 struct clsrvconf *conf = server->conf;
2902 struct gconffile *cf = NULL;
2904 /* for now we only learn hostname/address */
2905 debug(DBG_DBG, "dynamicconfig: need dynamic server config for %s", server->dynamiclookuparg);
2908 debug(DBG_ERR, "dynamicconfig: pipe error");
2913 debug(DBG_ERR, "dynamicconfig: fork error");
2915 } else if (pid == 0) {
2918 if (fd[1] != STDOUT_FILENO) {
2919 if (dup2(fd[1], STDOUT_FILENO) != STDOUT_FILENO)
2920 debugx(1, DBG_ERR, "dynamicconfig: dup2 error for command %s", conf->dynamiclookupcommand);
2923 if (execlp(conf->dynamiclookupcommand, conf->dynamiclookupcommand, server->dynamiclookuparg, NULL) < 0)
2924 debugx(1, DBG_ERR, "dynamicconfig: exec error for command %s", conf->dynamiclookupcommand);
2928 pushgconffile(&cf, fdopen(fd[0], "r"), conf->dynamiclookupcommand);
2929 ok = getgenericconfig(&cf, NULL,
2930 "Server", CONF_CBK, confserver_cb, (void *)conf,
2935 if (waitpid(pid, NULL, 0) < 0) {
2936 debug(DBG_ERR, "dynamicconfig: wait error");
2944 server->conf = NULL;
2945 debug(DBG_WARN, "dynamicconfig: failed to obtain dynamic server config");
2948 int addmatchcertattr(struct clsrvconf *conf) {
2952 if (!strncasecmp(conf->matchcertattr, "CN:/", 4)) {
2953 r = &conf->certcnregex;
2954 v = conf->matchcertattr + 4;
2955 } else if (!strncasecmp(conf->matchcertattr, "SubjectAltName:URI:/", 20)) {
2956 r = &conf->certuriregex;
2957 v = conf->matchcertattr + 20;
2962 /* regexp, remove optional trailing / if present */
2963 if (v[strlen(v) - 1] == '/')
2964 v[strlen(v) - 1] = '\0';
2968 *r = malloc(sizeof(regex_t));
2970 debug(DBG_ERR, "malloc failed");
2973 if (regcomp(*r, v, REG_ICASE | REG_NOSUB)) {
2976 debug(DBG_ERR, "failed to compile regular expression %s", v);
2982 int addrewriteattr(struct clsrvconf *conf) {
2985 v = conf->rewriteattr + 11;
2986 if (strncasecmp(conf->rewriteattr, "User-Name:/", 11) || !*v)
2988 /* regexp, remove optional trailing / if present */
2989 if (v[strlen(v) - 1] == '/')
2990 v[strlen(v) - 1] = '\0';
2998 conf->rewriteattrregex = malloc(sizeof(regex_t));
2999 if (!conf->rewriteattrregex) {
3000 debug(DBG_ERR, "malloc failed");
3004 conf->rewriteattrreplacement = stringcopy(w, 0);
3005 if (!conf->rewriteattrreplacement) {
3006 free(conf->rewriteattrregex);
3007 conf->rewriteattrregex = NULL;
3011 if (regcomp(conf->rewriteattrregex, v, REG_ICASE | REG_EXTENDED)) {
3012 free(conf->rewriteattrregex);
3013 conf->rewriteattrregex = NULL;
3014 free(conf->rewriteattrreplacement);
3015 conf->rewriteattrreplacement = NULL;
3016 debug(DBG_ERR, "failed to compile regular expression %s", v);
3023 /* should accept both names and numeric values, only numeric right now */
3024 uint8_t attrname2val(char *attrname) {
3027 val = atoi(attrname);
3028 return val > 0 && val < 256 ? val : 0;
3031 /* should accept both names and numeric values, only numeric right now */
3032 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) {
3035 *vendor = atoi(attrname);
3036 s = strchr(attrname, ':');
3041 *type = atoi(s + 1);
3042 return *type >= 0 && *type < 256;
3045 struct rewrite *getrewrite(char *alt1, char *alt2) {
3046 struct list_node *entry;
3047 struct rewriteconf *r, *r1 = NULL, *r2 = NULL;
3049 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
3050 r = (struct rewriteconf *)entry->data;
3051 if (!strcasecmp(r->name, alt1)) {
3055 if (!r2 && alt2 && !strcasecmp(r->name, alt2))
3065 void addrewrite(char *value, char **attrs, char **vattrs) {
3066 struct rewriteconf *new;
3067 struct rewrite *rewrite = NULL;
3070 uint32_t *p, *va = NULL;
3074 for (; attrs[n]; n++);
3075 a = malloc((n + 1) * sizeof(uint8_t));
3077 debugx(1, DBG_ERR, "malloc failed");
3079 for (i = 0; i < n; i++) {
3080 if (!(a[i] = attrname2val(attrs[i])))
3081 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", attrs[i]);
3090 for (; vattrs[n]; n++);
3091 va = malloc((2 * n + 1) * sizeof(uint32_t));
3093 debugx(1, DBG_ERR, "malloc failed");
3095 for (p = va, i = 0; i < n; i++, p += 2) {
3096 if (!vattrname2val(vattrs[i], p, p + 1))
3097 debugx(1, DBG_ERR, "addrewrite: invalid vendor attribute %s", vattrs[i]);
3105 rewrite = malloc(sizeof(struct rewrite));
3107 debugx(1, DBG_ERR, "malloc failed");
3108 rewrite->removeattrs = a;
3109 rewrite->removevendorattrs = va;
3112 new = malloc(sizeof(struct rewriteconf));
3113 if (!new || !list_push(rewriteconfs, new))
3114 debugx(1, DBG_ERR, "malloc failed");
3116 memset(new, 0, sizeof(struct rewriteconf));
3117 new->name = stringcopy(value, 0);
3119 debugx(1, DBG_ERR, "malloc failed");
3121 new->rewrite = rewrite;
3122 debug(DBG_DBG, "addrewrite: added rewrite block %s", value);
3125 void freeclsrvconf(struct clsrvconf *conf) {
3127 free(conf->conftype);
3132 free(conf->matchcertattr);
3133 if (conf->certcnregex)
3134 regfree(conf->certcnregex);
3135 if (conf->certuriregex)
3136 regfree(conf->certuriregex);
3137 free(conf->confrewrite);
3138 free(conf->rewriteattr);
3139 if (conf->rewriteattrregex)
3140 regfree(conf->rewriteattrregex);
3141 free(conf->rewriteattrreplacement);
3142 free(conf->dynamiclookupcommand);
3144 SSL_CTX_free(conf->ssl_ctx);
3145 free(conf->rewrite);
3147 freeaddrinfo(conf->addrinfo);
3148 list_destroy(conf->clients);
3149 free(conf->servers);
3153 int mergeconfstring(char **dst, char **src) {
3162 t = stringcopy(*dst, 0);
3164 debug(DBG_ERR, "malloc failed");
3172 /* assumes dst is a shallow copy */
3173 int mergesrvconf(struct clsrvconf *dst, struct clsrvconf *src) {
3174 if (!mergeconfstring(&dst->name, &src->name) ||
3175 !mergeconfstring(&dst->conftype, &src->conftype) ||
3176 !mergeconfstring(&dst->host, &src->host) ||
3177 !mergeconfstring(&dst->port, &src->port) ||
3178 !mergeconfstring(&dst->secret, &src->secret) ||
3179 !mergeconfstring(&dst->tls, &src->tls) ||
3180 !mergeconfstring(&dst->matchcertattr, &src->matchcertattr) ||
3181 !mergeconfstring(&dst->confrewrite, &src->confrewrite))
3183 dst->statusserver = src->statusserver;
3184 dst->certnamecheck = src->certnamecheck;
3188 int confclient_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
3189 struct clsrvconf *conf;
3191 debug(DBG_DBG, "confclient_cb called for %s", block);
3193 conf = malloc(sizeof(struct clsrvconf));
3194 if (!conf || !list_push(clconfs, conf))
3195 debugx(1, DBG_ERR, "malloc failed");
3196 memset(conf, 0, sizeof(struct clsrvconf));
3197 conf->certnamecheck = 1;
3199 if (!getgenericconfig(cf, block,
3200 "type", CONF_STR, &conf->conftype,
3201 "host", CONF_STR, &conf->host,
3202 "secret", CONF_STR, &conf->secret,
3203 "tls", CONF_STR, &conf->tls,
3204 "matchcertificateattribute", CONF_STR, &conf->matchcertattr,
3205 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3206 "rewrite", CONF_STR, &conf->confrewrite,
3207 "rewriteattribute", CONF_STR, &conf->rewriteattr,
3210 debugx(1, DBG_ERR, "configuration error");
3212 conf->name = stringcopy(val, 0);
3214 conf->host = stringcopy(val, 0);
3216 if (conf->conftype && !strcasecmp(conf->conftype, "udp")) {
3219 } else if (conf->conftype && !strcasecmp(conf->conftype, "tls")) {
3220 conf->ssl_ctx = conf->tls ? tlsgetctx(conf->tls, NULL) : tlsgetctx("defaultclient", "default");
3222 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
3223 if (conf->matchcertattr && !addmatchcertattr(conf))
3224 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3228 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3230 conf->rewrite = conf->confrewrite ? getrewrite(conf->confrewrite, NULL) : getrewrite("defaultclient", "default");
3232 if (conf->rewriteattr) {
3233 if (!addrewriteattr(conf))
3234 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
3237 if (!resolvepeer(conf, 0))
3238 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3240 if (!conf->secret) {
3241 if (conf->type == 'U')
3242 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3243 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3248 int compileserverconfig(struct clsrvconf *conf, const char *block) {
3249 switch (conf->type) {
3252 conf->port = stringcopy(DEFAULT_UDP_PORT, 0);
3255 conf->ssl_ctx = conf->tls ? tlsgetctx(conf->tls, NULL) : tlsgetctx("defaultserver", "default");
3256 if (!conf->ssl_ctx) {
3257 debug(DBG_ERR, "error in block %s, no tls context defined", block);
3260 if (conf->matchcertattr && !addmatchcertattr(conf)) {
3261 debug(DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3265 conf->port = stringcopy(DEFAULT_TLS_PORT, 0);
3269 conf->rewrite = conf->confrewrite ? getrewrite(conf->confrewrite, NULL) : getrewrite("defaultserver", "default");
3271 if (!conf->secret) {
3272 if (conf->type == 'U')
3273 debug(DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3274 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3275 if (!conf->secret) {
3276 debug(DBG_ERR, "malloc failed");
3281 if (!conf->dynamiclookupcommand && !resolvepeer(conf, 0)) {
3282 debug(DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3288 int confserver_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
3289 struct clsrvconf *conf, *resconf;
3291 debug(DBG_DBG, "confserver_cb called for %s", block);
3293 conf = malloc(sizeof(struct clsrvconf));
3295 debug(DBG_ERR, "malloc failed");
3298 memset(conf, 0, sizeof(struct clsrvconf));
3299 resconf = (struct clsrvconf *)arg;
3301 conf->statusserver = resconf->statusserver;
3302 conf->certnamecheck = resconf->certnamecheck;
3304 conf->certnamecheck = 1;
3306 if (!getgenericconfig(cf, block,
3307 "type", CONF_STR, &conf->conftype,
3308 "host", CONF_STR, &conf->host,
3309 "port", CONF_STR, &conf->port,
3310 "secret", CONF_STR, &conf->secret,
3311 "tls", CONF_STR, &conf->tls,
3312 "MatchCertificateAttribute", CONF_STR, &conf->matchcertattr,
3313 "rewrite", CONF_STR, &conf->confrewrite,
3314 "StatusServer", CONF_BLN, &conf->statusserver,
3315 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3316 "DynamicLookupCommand", CONF_STR, &conf->dynamiclookupcommand,
3319 debug(DBG_ERR, "configuration error");
3323 conf->name = stringcopy(val, 0);
3325 debug(DBG_ERR, "malloc failed");
3329 conf->host = stringcopy(val, 0);
3331 debug(DBG_ERR, "malloc failed");
3337 if (!mergesrvconf(resconf, conf))
3343 if (conf->conftype && !strcasecmp(conf->conftype, "udp"))
3345 else if (conf->conftype && !strcasecmp(conf->conftype, "tls"))
3348 debug(DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3352 if (resconf || !conf->dynamiclookupcommand) {
3353 if (!compileserverconfig(conf, block))
3360 switch (conf->type) {
3371 if (!list_push(srvconfs, conf)) {
3372 debug(DBG_ERR, "malloc failed");
3378 freeclsrvconf(conf);
3382 int confrealm_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
3383 char **servers = NULL, **accservers = NULL, *msg = NULL;
3385 debug(DBG_DBG, "confrealm_cb called for %s", block);
3387 if (!getgenericconfig(cf, block,
3388 "server", CONF_MSTR, &servers,
3389 "accountingServer", CONF_MSTR, &accservers,
3390 "ReplyMessage", CONF_STR, &msg,
3393 debugx(1, DBG_ERR, "configuration error");
3395 addrealm(realms, val, servers, accservers, msg);
3399 int conftls_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
3400 char *cacertfile = NULL, *cacertpath = NULL, *certfile = NULL, *certkeyfile = NULL, *certkeypwd = NULL;
3402 debug(DBG_DBG, "conftls_cb called for %s", block);
3404 if (!getgenericconfig(cf, block,
3405 "CACertificateFile", CONF_STR, &cacertfile,
3406 "CACertificatePath", CONF_STR, &cacertpath,
3407 "CertificateFile", CONF_STR, &certfile,
3408 "CertificateKeyFile", CONF_STR, &certkeyfile,
3409 "CertificateKeyPassword", CONF_STR, &certkeypwd,
3412 debugx(1, DBG_ERR, "configuration error");
3414 tlsadd(val, cacertfile, cacertpath, certfile, certkeyfile, certkeypwd);
3423 int confrewrite_cb(struct gconffile **cf, void *arg, char *block, char *opt, char *val) {
3424 char **attrs = NULL, **vattrs = NULL;
3426 debug(DBG_DBG, "confrewrite_cb called for %s", block);
3428 if (!getgenericconfig(cf, block,
3429 "removeAttribute", CONF_MSTR, &attrs,
3430 "removeVendorAttribute", CONF_MSTR, &vattrs,
3433 debugx(1, DBG_ERR, "configuration error");
3434 addrewrite(val, attrs, vattrs);
3438 void getmainconfig(const char *configfile) {
3439 char *loglevel = NULL;
3440 struct gconffile *cfs;
3442 cfs = openconfigfile(configfile);
3443 memset(&options, 0, sizeof(options));
3445 clconfs = list_create();
3447 debugx(1, DBG_ERR, "malloc failed");
3449 srvconfs = list_create();
3451 debugx(1, DBG_ERR, "malloc failed");
3453 realms = list_create();
3455 debugx(1, DBG_ERR, "malloc failed");
3457 tlsconfs = list_create();
3459 debugx(1, DBG_ERR, "malloc failed");
3461 rewriteconfs = list_create();
3463 debugx(1, DBG_ERR, "malloc failed");
3465 if (!getgenericconfig(&cfs, NULL,
3466 "ListenUDP", CONF_STR, &options.listenudp,
3467 "ListenTCP", CONF_STR, &options.listentcp,
3468 "ListenAccountingUDP", CONF_STR, &options.listenaccudp,
3469 "SourceUDP", CONF_STR, &options.sourceudp,
3470 "SourceTCP", CONF_STR, &options.sourcetcp,
3471 "LogLevel", CONF_STR, &loglevel,
3472 "LogDestination", CONF_STR, &options.logdestination,
3473 "Client", CONF_CBK, confclient_cb, NULL,
3474 "Server", CONF_CBK, confserver_cb, NULL,
3475 "Realm", CONF_CBK, confrealm_cb, NULL,
3476 "TLS", CONF_CBK, conftls_cb, NULL,
3477 "Rewrite", CONF_CBK, confrewrite_cb, NULL,
3480 debugx(1, DBG_ERR, "configuration error");
3483 if (strlen(loglevel) != 1 || *loglevel < '1' || *loglevel > '4')
3484 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %s, must be 1, 2, 3 or 4", configfile, loglevel);
3485 options.loglevel = *loglevel - '0';
3490 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile) {
3493 while ((c = getopt(argc, argv, "c:d:fpv")) != -1) {
3496 *configfile = optarg;
3499 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
3500 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
3501 *loglevel = *optarg - '0';
3510 debugx(0, DBG_ERR, "radsecproxy revision $Rev$");
3515 if (!(argc - optind))
3519 debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -p ] [ -v ]", argv[0]);
3523 int daemon(int a, int b) {
3531 for (i = 0; i < 3; i++) {
3533 open("/dev/null", O_RDWR);
3539 void *sighandler(void *arg) {
3544 sigemptyset(&sigset);
3545 sigaddset(&sigset, SIGPIPE);
3546 sigwait(&sigset, &sig);
3547 /* only get SIGPIPE right now, so could simplify below code */
3550 /* completely ignoring this */
3553 debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?");
3556 debug(DBG_WARN, "sighandler: ignoring signal %d", sig);
3561 int main(int argc, char **argv) {
3562 pthread_t sigth, udpserverth, udpaccserverth, udpclient4rdth, udpclient6rdth;
3564 struct list_node *entry;
3565 uint8_t foreground = 0, pretend = 0, loglevel = 0;
3566 char *configfile = NULL;
3567 struct clsrvconf *srvconf;
3569 debug_init("radsecproxy");
3570 debug_set_level(DEBUG_LEVEL);
3571 getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile);
3573 debug_set_level(loglevel);
3574 getmainconfig(configfile ? configfile : CONFIG_MAIN);
3576 options.loglevel = loglevel;
3577 else if (options.loglevel)
3578 debug_set_level(options.loglevel);
3580 free(options.logdestination);
3581 options.logdestination = NULL;
3583 if (!options.logdestination)
3584 options.logdestination = "x-syslog:///";
3585 debug_set_destination(options.logdestination);
3586 free(options.logdestination);
3589 if (!list_first(clconfs))
3590 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
3591 if (!list_first(srvconfs))
3592 debugx(1, DBG_ERR, "No servers configured, nothing to do, exiting");
3593 if (!list_first(realms))
3594 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
3597 debugx(0, DBG_ERR, "All OK so far; exiting since only pretending");
3599 if (!foreground && (daemon(0, 0) < 0))
3600 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
3602 debug(DBG_INFO, "radsecproxy revision $Rev$ starting");
3604 sigemptyset(&sigset);
3605 /* exit on all but SIGPIPE, ignore more? */
3606 sigaddset(&sigset, SIGPIPE);
3607 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
3608 pthread_create(&sigth, NULL, sighandler, NULL);
3610 if (client_udp_count) {
3611 udp_server_replyq = newreplyq();
3612 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
3613 debugx(1, DBG_ERR, "pthread_create failed");
3614 if (options.listenaccudp)
3615 if (pthread_create(&udpaccserverth, NULL, udpaccserverrd, NULL))
3616 debugx(1, DBG_ERR, "pthread_create failed");
3619 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
3620 srvconf = (struct clsrvconf *)entry->data;
3621 if (srvconf->dynamiclookupcommand)
3623 if (!addserver(srvconf))
3624 debugx(1, DBG_ERR, "failed to add server");
3625 if (pthread_create(&srvconf->servers->clientth, NULL, clientwr,
3626 (void *)(srvconf->servers)))
3627 debugx(1, DBG_ERR, "pthread_create failed");
3629 /* srcudpres no longer needed, while srctcpres is needed later */
3631 freeaddrinfo(srcudpres);
3634 if (udp_client4_sock >= 0)
3635 if (pthread_create(&udpclient4rdth, NULL, udpclientrd, (void *)&udp_client4_sock))
3636 debugx(1, DBG_ERR, "pthread_create failed");
3637 if (udp_client6_sock >= 0)
3638 if (pthread_create(&udpclient6rdth, NULL, udpclientrd, (void *)&udp_client6_sock))
3639 debugx(1, DBG_ERR, "pthread_create failed");
3641 if (client_tls_count)
3642 return tlslistener();
3644 /* just hang around doing nothing, anything to do here? */