2 * Copyright (C) 2006, 2007 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.
11 * radius keep alives (server status)
12 * setsockopt(keepalive...), check if openssl has some keepalive feature
15 /* For UDP there is one server instance consisting of udpserverrd and udpserverth
16 * rd is responsible for init and launching wr
17 * For TLS there is a server instance that launches tlsserverrd for each TLS peer
18 * each tlsserverrd launches tlsserverwr
19 * For each UDP/TLS peer there is clientrd and clientwr, clientwr is responsible
20 * for init and launching rd
22 * serverrd will receive a request, processes it and puts it in the requestq of
23 * the appropriate clientwr
24 * clientwr monitors its requestq and sends requests
25 * clientrd looks for responses, processes them and puts them in the replyq of
26 * the peer the request came from
27 * serverwr monitors its reply and sends replies
29 * In addition to the main thread, we have:
30 * If UDP peers are configured, there will be 2 + 2 * #peers UDP threads
31 * If TLS peers are configured, there will initially be 2 * #peers TLS threads
32 * For each TLS peer connecting to us there will be 2 more TLS threads
33 * This is only for connected peers
34 * Example: With 3 UDP peer and 30 TLS peers, there will be a max of
35 * 1 + (2 + 2 * 3) + (2 * 30) + (2 * 30) = 129 threads
38 #include <sys/socket.h>
39 #include <netinet/in.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>
53 #include "radsecproxy.h"
55 static struct options options;
56 static struct client *clients = NULL;
57 static struct server *servers = NULL;
58 static struct realm *realms = NULL;
60 static int client_udp_count = 0;
61 static int client_tls_count = 0;
62 static int client_count = 0;
63 static int server_udp_count = 0;
64 static int server_tls_count = 0;
65 static int server_count = 0;
66 static int realm_count = 0;
68 static struct peer *tcp_server_listen;
69 static struct peer *udp_server_listen;
70 static struct replyq udp_server_replyq;
71 static int udp_server_sock = -1;
72 static pthread_mutex_t *ssl_locks;
73 static long *ssl_lock_count;
74 static SSL_CTX *ssl_ctx = NULL;
78 /* callbacks for making OpenSSL thread safe */
79 unsigned long ssl_thread_id() {
80 return (unsigned long)pthread_self();
83 void ssl_locking_callback(int mode, int type, const char *file, int line) {
84 if (mode & CRYPTO_LOCK) {
85 pthread_mutex_lock(&ssl_locks[type]);
86 ssl_lock_count[type]++;
88 pthread_mutex_unlock(&ssl_locks[type]);
91 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
92 int pwdlen = strlen(userdata);
93 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
95 memcpy(buf, userdata, pwdlen);
99 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
104 err_cert = X509_STORE_CTX_get_current_cert(ctx);
105 err = X509_STORE_CTX_get_error(ctx);
106 depth = X509_STORE_CTX_get_error_depth(ctx);
108 if (depth > MAX_CERT_DEPTH) {
110 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
111 X509_STORE_CTX_set_error(ctx, err);
115 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
116 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
119 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
120 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
121 debug(DBG_WARN, "\tIssuer=%s", buf);
123 case X509_V_ERR_CERT_NOT_YET_VALID:
124 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
125 debug(DBG_WARN, "\tCertificate not yet valid");
127 case X509_V_ERR_CERT_HAS_EXPIRED:
128 debug(DBG_WARN, "Certificate has expired");
130 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
131 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
136 printf("certificate verify returns %d\n", ok);
141 SSL_CTX *ssl_init() {
146 if (!options.tlscertificatefile || !options.tlscertificatekeyfile)
147 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified for TLS");
149 if (!options.tlscacertificatefile && !options.tlscacertificatepath)
150 debugx(1, DBG_ERR, "CA Certificate file/path need to be configured");
152 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
153 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
154 for (i = 0; i < CRYPTO_num_locks(); i++) {
155 ssl_lock_count[i] = 0;
156 pthread_mutex_init(&ssl_locks[i], NULL);
158 CRYPTO_set_id_callback(ssl_thread_id);
159 CRYPTO_set_locking_callback(ssl_locking_callback);
161 SSL_load_error_strings();
164 while (!RAND_status()) {
165 time_t t = time(NULL);
166 pid_t pid = getpid();
167 RAND_seed((unsigned char *)&t, sizeof(time_t));
168 RAND_seed((unsigned char *)&pid, sizeof(pid));
171 ctx = SSL_CTX_new(TLSv1_method());
172 if (options.tlscertificatekeypassword) {
173 SSL_CTX_set_default_passwd_cb_userdata(ctx, options.tlscertificatekeypassword);
174 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
176 if (SSL_CTX_use_certificate_chain_file(ctx, options.tlscertificatefile) &&
177 SSL_CTX_use_PrivateKey_file(ctx, options.tlscertificatekeyfile, SSL_FILETYPE_PEM) &&
178 SSL_CTX_check_private_key(ctx) &&
179 SSL_CTX_load_verify_locations(ctx, options.tlscacertificatefile, options.tlscacertificatepath)) {
180 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
181 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
185 while ((error = ERR_get_error()))
186 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
187 debug(DBG_ERR, "Error initialising SSL/TLS");
192 void printauth(char *s, unsigned char *t) {
195 for (i = 0; i < 16; i++)
196 printf("%02x ", t[i]);
201 int resolvepeer(struct peer *peer, int ai_flags) {
202 struct addrinfo hints, *addrinfo;
204 memset(&hints, 0, sizeof(hints));
205 hints.ai_socktype = (peer->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
206 hints.ai_family = AF_UNSPEC;
207 hints.ai_flags = ai_flags;
208 if (getaddrinfo(peer->host, peer->port, &hints, &addrinfo)) {
209 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", peer->host, peer->port);
214 freeaddrinfo(peer->addrinfo);
215 peer->addrinfo = addrinfo;
219 int connecttoserver(struct addrinfo *addrinfo) {
221 struct addrinfo *res;
223 for (res = addrinfo; res; res = res->ai_next) {
224 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
226 debug(DBG_WARN, "connecttoserver: socket failed");
229 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
231 debug(DBG_WARN, "connecttoserver: connect failed");
238 int bindtoaddr(struct addrinfo *addrinfo) {
240 struct addrinfo *res;
242 for (res = addrinfo; res; res = res->ai_next) {
243 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
245 debug(DBG_WARN, "bindtoaddr: socket failed");
248 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
249 if (!bind(s, res->ai_addr, res->ai_addrlen))
251 debug(DBG_WARN, "bindtoaddr: bind failed");
257 /* returns the client with matching address, or NULL */
258 /* if client argument is not NULL, we only check that one client */
259 struct client *find_client(char type, struct sockaddr *addr, struct client *client) {
260 struct sockaddr_in6 *sa6;
261 struct in_addr *a4 = NULL;
264 struct addrinfo *res;
266 if (addr->sa_family == AF_INET6) {
267 sa6 = (struct sockaddr_in6 *)addr;
268 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr))
269 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
271 a4 = &((struct sockaddr_in *)addr)->sin_addr;
273 c = (client ? client : clients);
274 for (i = 0; i < client_count; i++) {
275 if (c->peer.type == type)
276 for (res = c->peer.addrinfo; res; res = res->ai_next)
277 if ((a4 && res->ai_family == AF_INET &&
278 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
279 (res->ai_family == AF_INET6 &&
280 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
289 /* returns the server with matching address, or NULL */
290 /* if server argument is not NULL, we only check that one server */
291 struct server *find_server(char type, struct sockaddr *addr, struct server *server) {
292 struct sockaddr_in6 *sa6;
293 struct in_addr *a4 = NULL;
296 struct addrinfo *res;
298 if (addr->sa_family == AF_INET6) {
299 sa6 = (struct sockaddr_in6 *)addr;
300 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr))
301 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
303 a4 = &((struct sockaddr_in *)addr)->sin_addr;
305 s = (server ? server : servers);
306 for (i = 0; i < server_count; i++) {
307 if (s->peer.type == type)
308 for (res = s->peer.addrinfo; res; res = res->ai_next)
309 if ((a4 && res->ai_family == AF_INET &&
310 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
311 (res->ai_family == AF_INET6 &&
312 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
321 /* exactly one of client and server must be non-NULL */
322 /* if *peer == NULL we return who we received from, else require it to be from peer */
323 /* return from in sa if not NULL */
324 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
327 unsigned char buf[65536], *rad;
328 struct sockaddr_storage from;
329 socklen_t fromlen = sizeof(from);
332 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
334 debug(DBG_WARN, "radudpget: recv failed");
337 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
340 debug(DBG_WARN, "radudpget: packet too small");
346 debug(DBG_WARN, "radudpget: length too small");
351 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
355 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
358 ? (void *)find_client('U', (struct sockaddr *)&from, *client)
359 : (void *)find_server('U', (struct sockaddr *)&from, *server));
361 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer, ignoring");
368 debug(DBG_ERR, "radudpget: malloc failed");
370 memcpy(rad, buf, len);
372 *client = (struct client *)f; /* only need this if *client == NULL, but if not NULL *client == f here */
374 *server = (struct server *)f; /* only need this if *server == NULL, but if not NULL *server == f here */
380 int tlsverifycert(struct peer *peer) {
388 if (SSL_get_verify_result(peer->ssl) != X509_V_OK) {
389 debug(DBG_ERR, "tlsverifycert: basic validation failed");
390 while ((error = ERR_get_error()))
391 debug(DBG_ERR, "tlsverifycert: TLS: %s", ERR_error_string(error, NULL));
395 cert = SSL_get_peer_certificate(peer->ssl);
397 debug(DBG_ERR, "tlsverifycert: failed to obtain certificate");
400 nm = X509_get_subject_name(cert);
403 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
406 e = X509_NAME_get_entry(nm, loc);
407 l = ASN1_STRING_to_UTF8(&v, X509_NAME_ENTRY_get_data(e));
414 for (i = 0; i < l; i++)
419 if (l == strlen(peer->host) && !strncasecmp(peer->host, (char *)v, l)) {
420 debug(DBG_DBG, "tlsverifycert: Found cn matching host %s, All OK", peer->host);
423 debug(DBG_ERR, "tlsverifycert: cn not matching host %s", peer->host);
429 void tlsconnect(struct server *server, struct timeval *when, char *text) {
433 debug(DBG_DBG, "tlsconnect called from %s", text);
434 pthread_mutex_lock(&server->lock);
435 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
436 /* already reconnected, nothing to do */
437 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
438 pthread_mutex_unlock(&server->lock);
442 debug(DBG_DBG, "tlsconnect %s", text);
445 gettimeofday(&now, NULL);
446 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
447 if (server->connectionok) {
448 server->connectionok = 0;
450 } else if (elapsed < 5)
452 else if (elapsed < 300) {
453 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
455 } else if (elapsed < 100000) {
456 debug(DBG_INFO, "tlsconnect: sleeping %ds", 600);
459 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
460 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->peer.host, server->peer.port);
461 if (server->sock >= 0)
463 if ((server->sock = connecttoserver(server->peer.addrinfo)) < 0) {
464 debug(DBG_ERR, "tlsconnect: connecttoserver failed");
468 SSL_free(server->peer.ssl);
469 server->peer.ssl = SSL_new(ssl_ctx);
470 SSL_set_fd(server->peer.ssl, server->sock);
471 if (SSL_connect(server->peer.ssl) > 0 && tlsverifycert(&server->peer))
474 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->peer.host, server->peer.port);
475 gettimeofday(&server->lastconnecttry, NULL);
476 pthread_mutex_unlock(&server->lock);
479 unsigned char *radtlsget(SSL *ssl) {
481 unsigned char buf[4], *rad;
484 for (total = 0; total < 4; total += cnt) {
485 cnt = SSL_read(ssl, buf + total, 4 - total);
487 debug(DBG_ERR, "radtlsget: connection lost");
488 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
489 /* remote end sent close_notify, send one back */
499 debug(DBG_ERR, "radtlsget: malloc failed");
504 for (; total < len; total += cnt) {
505 cnt = SSL_read(ssl, rad + total, len - total);
507 debug(DBG_ERR, "radtlsget: connection lost");
508 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
509 /* remote end sent close_notify, send one back */
521 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
524 debug(DBG_DBG, "radtlsget: got %d bytes", total);
528 int clientradput(struct server *server, unsigned char *rad) {
532 struct timeval lastconnecttry;
535 if (server->peer.type == 'U') {
536 if (send(server->sock, rad, len, 0) >= 0) {
537 debug(DBG_DBG, "clienradput: sent UDP of length %d to %s port %s", len, server->peer.host, server->peer.port);
540 debug(DBG_WARN, "clientradput: send failed");
544 lastconnecttry = server->lastconnecttry;
545 while ((cnt = SSL_write(server->peer.ssl, rad, len)) <= 0) {
546 while ((error = ERR_get_error()))
547 debug(DBG_ERR, "clientradput: TLS: %s", ERR_error_string(error, NULL));
548 tlsconnect(server, &lastconnecttry, "clientradput");
549 lastconnecttry = server->lastconnecttry;
552 server->connectionok = 1;
553 debug(DBG_DBG, "clientradput: Sent %d bytes, Radius packet of length %d to TLS peer %s",
554 cnt, len, server->peer.host);
558 int radsign(unsigned char *rad, unsigned char *sec) {
559 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
560 static unsigned char first = 1;
561 static EVP_MD_CTX mdctx;
565 pthread_mutex_lock(&lock);
567 EVP_MD_CTX_init(&mdctx);
571 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
572 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
573 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
574 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
576 pthread_mutex_unlock(&lock);
580 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
581 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
582 static unsigned char first = 1;
583 static EVP_MD_CTX mdctx;
584 unsigned char hash[EVP_MAX_MD_SIZE];
588 pthread_mutex_lock(&lock);
590 EVP_MD_CTX_init(&mdctx);
596 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
597 EVP_DigestUpdate(&mdctx, rad, 4) &&
598 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
599 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
600 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
601 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
603 !memcmp(hash, rad + 4, 16));
604 pthread_mutex_unlock(&lock);
608 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
609 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
610 static unsigned char first = 1;
611 static HMAC_CTX hmacctx;
613 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
615 pthread_mutex_lock(&lock);
617 HMAC_CTX_init(&hmacctx);
621 memcpy(auth, authattr, 16);
622 memset(authattr, 0, 16);
624 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
625 HMAC_Update(&hmacctx, rad, RADLEN(rad));
626 HMAC_Final(&hmacctx, hash, &md_len);
627 memcpy(authattr, auth, 16);
629 debug(DBG_WARN, "message auth computation failed");
630 pthread_mutex_unlock(&lock);
634 if (memcmp(auth, hash, 16)) {
635 debug(DBG_WARN, "message authenticator, wrong value");
636 pthread_mutex_unlock(&lock);
640 pthread_mutex_unlock(&lock);
644 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
645 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
646 static unsigned char first = 1;
647 static HMAC_CTX hmacctx;
653 pthread_mutex_lock(&lock);
655 HMAC_CTX_init(&hmacctx);
659 memset(authattrval, 0, 16);
661 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
662 HMAC_Update(&hmacctx, rad, RADLEN(rad));
663 HMAC_Final(&hmacctx, authattrval, &md_len);
665 debug(DBG_WARN, "message auth computation failed");
666 pthread_mutex_unlock(&lock);
670 pthread_mutex_unlock(&lock);
674 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
676 if (ATTRTYPE(attrs) == type)
678 length -= ATTRLEN(attrs);
679 attrs += ATTRLEN(attrs);
684 void sendrq(struct server *to, struct request *rq) {
688 pthread_mutex_lock(&to->newrq_mutex);
689 /* might simplify if only try nextid, might be ok */
690 for (i = to->nextid; i < MAX_REQUESTS; i++)
691 if (!to->requests[i].buf)
693 if (i == MAX_REQUESTS) {
694 for (i = 0; i < to->nextid; i++)
695 if (!to->requests[i].buf)
697 if (i == to->nextid) {
698 debug(DBG_WARN, "No room in queue, dropping request");
700 pthread_mutex_unlock(&to->newrq_mutex);
705 rq->buf[1] = (char)i;
707 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
708 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->peer.secret)) {
710 pthread_mutex_unlock(&to->newrq_mutex);
714 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->peer.host);
715 to->requests[i] = *rq;
720 debug(DBG_DBG, "signalling client writer");
721 pthread_cond_signal(&to->newrq_cond);
723 pthread_mutex_unlock(&to->newrq_mutex);
726 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
727 struct replyq *replyq = to->replyq;
729 if (!radsign(buf, (unsigned char *)to->peer.secret)) {
731 debug(DBG_WARN, "sendreply: failed to sign message");
735 pthread_mutex_lock(&replyq->count_mutex);
736 if (replyq->count == replyq->size) {
737 debug(DBG_WARN, "No room in queue, dropping request");
738 pthread_mutex_unlock(&replyq->count_mutex);
743 replyq->replies[replyq->count].buf = buf;
745 replyq->replies[replyq->count].tosa = *tosa;
748 if (replyq->count == 1) {
749 debug(DBG_DBG, "signalling client writer");
750 pthread_cond_signal(&replyq->count_cond);
752 pthread_mutex_unlock(&replyq->count_mutex);
755 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
756 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
757 static unsigned char first = 1;
758 static EVP_MD_CTX mdctx;
759 unsigned char hash[EVP_MAX_MD_SIZE], *input;
761 uint8_t i, offset = 0, out[128];
763 pthread_mutex_lock(&lock);
765 EVP_MD_CTX_init(&mdctx);
771 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
772 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
773 !EVP_DigestUpdate(&mdctx, input, 16) ||
774 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
776 pthread_mutex_unlock(&lock);
779 for (i = 0; i < 16; i++)
780 out[offset + i] = hash[i] ^ in[offset + i];
781 input = out + offset - 16;
786 memcpy(in, out, len);
787 pthread_mutex_unlock(&lock);
791 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
792 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
793 static unsigned char first = 1;
794 static EVP_MD_CTX mdctx;
795 unsigned char hash[EVP_MAX_MD_SIZE], *input;
797 uint8_t i, offset = 0, out[128];
799 pthread_mutex_lock(&lock);
801 EVP_MD_CTX_init(&mdctx);
807 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
808 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
809 !EVP_DigestUpdate(&mdctx, input, 16) ||
810 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
812 pthread_mutex_unlock(&lock);
815 for (i = 0; i < 16; i++)
816 out[offset + i] = hash[i] ^ in[offset + i];
822 memcpy(in, out, len);
823 pthread_mutex_unlock(&lock);
827 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
828 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
829 static unsigned char first = 1;
830 static EVP_MD_CTX mdctx;
831 unsigned char hash[EVP_MAX_MD_SIZE];
835 pthread_mutex_lock(&lock);
837 EVP_MD_CTX_init(&mdctx);
842 printf("msppencrypt auth in: ");
843 for (i = 0; i < 16; i++)
844 printf("%02x ", auth[i]);
847 printf("msppencrypt salt in: ");
848 for (i = 0; i < 2; i++)
849 printf("%02x ", salt[i]);
852 printf("msppencrypt in: ");
853 for (i = 0; i < len; i++)
854 printf("%02x ", text[i]);
858 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
859 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
860 !EVP_DigestUpdate(&mdctx, auth, 16) ||
861 !EVP_DigestUpdate(&mdctx, salt, 2) ||
862 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
863 pthread_mutex_unlock(&lock);
868 printf("msppencrypt hash: ");
869 for (i = 0; i < 16; i++)
870 printf("%02x ", hash[i]);
874 for (i = 0; i < 16; i++)
877 for (offset = 16; offset < len; offset += 16) {
879 printf("text + offset - 16 c(%d): ", offset / 16);
880 for (i = 0; i < 16; i++)
881 printf("%02x ", (text + offset - 16)[i]);
884 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
885 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
886 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
887 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
889 pthread_mutex_unlock(&lock);
893 printf("msppencrypt hash: ");
894 for (i = 0; i < 16; i++)
895 printf("%02x ", hash[i]);
899 for (i = 0; i < 16; i++)
900 text[offset + i] ^= hash[i];
904 printf("msppencrypt out: ");
905 for (i = 0; i < len; i++)
906 printf("%02x ", text[i]);
910 pthread_mutex_unlock(&lock);
914 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
915 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
916 static unsigned char first = 1;
917 static EVP_MD_CTX mdctx;
918 unsigned char hash[EVP_MAX_MD_SIZE];
923 pthread_mutex_lock(&lock);
925 EVP_MD_CTX_init(&mdctx);
930 printf("msppdecrypt auth in: ");
931 for (i = 0; i < 16; i++)
932 printf("%02x ", auth[i]);
935 printf("msppedecrypt salt in: ");
936 for (i = 0; i < 2; i++)
937 printf("%02x ", salt[i]);
940 printf("msppedecrypt in: ");
941 for (i = 0; i < len; i++)
942 printf("%02x ", text[i]);
946 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
947 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
948 !EVP_DigestUpdate(&mdctx, auth, 16) ||
949 !EVP_DigestUpdate(&mdctx, salt, 2) ||
950 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
951 pthread_mutex_unlock(&lock);
956 printf("msppedecrypt hash: ");
957 for (i = 0; i < 16; i++)
958 printf("%02x ", hash[i]);
962 for (i = 0; i < 16; i++)
963 plain[i] = text[i] ^ hash[i];
965 for (offset = 16; offset < len; offset += 16) {
967 printf("text + offset - 16 c(%d): ", offset / 16);
968 for (i = 0; i < 16; i++)
969 printf("%02x ", (text + offset - 16)[i]);
972 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
973 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
974 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
975 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
977 pthread_mutex_unlock(&lock);
981 printf("msppedecrypt hash: ");
982 for (i = 0; i < 16; i++)
983 printf("%02x ", hash[i]);
987 for (i = 0; i < 16; i++)
988 plain[offset + i] = text[offset + i] ^ hash[i];
991 memcpy(text, plain, len);
993 printf("msppedecrypt out: ");
994 for (i = 0; i < len; i++)
995 printf("%02x ", text[i]);
999 pthread_mutex_unlock(&lock);
1003 struct server *id2server(char *id, uint8_t len) {
1005 for (i = 0; i < realm_count; i++)
1006 if (!regexec(&realms[i].regex, id, 0, NULL, 0)) {
1007 debug(DBG_DBG, "found matching realm: %s, host %s", realms[i].name, realms[i].server->peer.host);
1008 return realms[i].server;
1013 int rqinqueue(struct server *to, struct client *from, uint8_t id) {
1016 pthread_mutex_lock(&to->newrq_mutex);
1017 for (i = 0; i < MAX_REQUESTS; i++)
1018 if (to->requests[i].buf && to->requests[i].origid == id && to->requests[i].from == from)
1020 pthread_mutex_unlock(&to->newrq_mutex);
1022 return i < MAX_REQUESTS;
1025 int attrvalidate(unsigned char *attrs, int length) {
1026 while (length > 1) {
1027 if (ATTRLEN(attrs) < 2) {
1028 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1031 length -= ATTRLEN(attrs);
1033 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1036 attrs += ATTRLEN(attrs);
1039 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1043 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1047 if (len < 16 || len > 128 || len % 16) {
1048 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1052 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1053 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1057 printf("pwdrecrypt: password: ");
1058 for (i = 0; i < len; i++)
1059 printf("%02x ", pwd[i]);
1062 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1063 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1069 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1072 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1073 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1076 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1077 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1083 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1084 char *oldsecret, char *newsecret) {
1085 unsigned char *attr;
1087 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1088 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1089 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1095 void respondstatusserver(struct request *rq) {
1096 unsigned char *resp;
1100 debug(DBG_ERR, "respondstatusserver: malloc failed");
1103 memcpy(resp, rq->buf, 20);
1104 resp[0] = RAD_Access_Accept;
1107 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->peer.host);
1108 sendreply(rq->from, resp, rq->from->peer.type == 'U' ? &rq->fromsa : NULL);
1111 void radsrv(struct request *rq) {
1112 uint8_t code, id, *auth, *attrs, *attr;
1116 unsigned char *buf, newauth[16];
1119 code = *(uint8_t *)buf;
1120 id = *(uint8_t *)(buf + 1);
1122 auth = (uint8_t *)(buf + 4);
1124 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1126 if (code != RAD_Access_Request && code != RAD_Status_Server) {
1127 debug(DBG_INFO, "radsrv: server currently accepts only access-requests and status-server, ignoring");
1135 if (!attrvalidate(attrs, len)) {
1136 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1141 if (code == RAD_Access_Request) {
1142 attr = attrget(attrs, len, RAD_Attr_User_Name);
1144 debug(DBG_WARN, "radsrv: ignoring request, no username attribute");
1148 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1149 username[ATTRVALLEN(attr)] = '\0';
1150 debug(DBG_DBG, "Access Request with username: %s", username);
1152 to = id2server(username, strlen(username));
1154 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1159 if (rqinqueue(to, rq->from, id)) {
1160 debug(DBG_INFO, "radsrv: already got request from host %s with id %d, ignoring", rq->from->peer.host, id);
1166 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1167 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(buf, ATTRVAL(attr), rq->from->peer.secret))) {
1168 debug(DBG_WARN, "radsrv: message authentication failed");
1173 if (code == RAD_Status_Server) {
1174 respondstatusserver(rq);
1178 if (!RAND_bytes(newauth, 16)) {
1179 debug(DBG_WARN, "radsrv: failed to generate random auth");
1185 printauth("auth", auth);
1188 attr = attrget(attrs, len, RAD_Attr_User_Password);
1190 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1191 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->peer.secret, to->peer.secret, auth, newauth)) {
1197 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1199 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1200 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->peer.secret, to->peer.secret, auth, newauth)) {
1207 memcpy(rq->origauth, auth, 16);
1208 memcpy(auth, newauth, 16);
1212 void *clientrd(void *arg) {
1213 struct server *server = (struct server *)arg;
1214 struct client *from;
1216 unsigned char *buf, *messageauth, *subattrs, *attrs, *attr;
1217 struct sockaddr_storage fromsa;
1218 struct timeval lastconnecttry;
1222 lastconnecttry = server->lastconnecttry;
1223 buf = (server->peer.type == 'U' ? radudpget(server->sock, NULL, &server, NULL) : radtlsget(server->peer.ssl));
1224 if (!buf && server->peer.type == 'T') {
1225 tlsconnect(server, &lastconnecttry, "clientrd");
1229 server->connectionok = 1;
1231 i = buf[1]; /* i is the id */
1234 case RAD_Access_Accept:
1235 debug(DBG_DBG, "got Access Accept with id %d", i);
1237 case RAD_Access_Reject:
1238 debug(DBG_DBG, "got Access Reject with id %d", i);
1240 case RAD_Access_Challenge:
1241 debug(DBG_DBG, "got Access Challenge with id %d", i);
1245 debug(DBG_INFO, "clientrd: discarding, only accept access accept, access reject and access challenge messages");
1249 pthread_mutex_lock(&server->newrq_mutex);
1250 if (!server->requests[i].buf || !server->requests[i].tries) {
1251 pthread_mutex_unlock(&server->newrq_mutex);
1253 debug(DBG_INFO, "clientrd: no matching request sent with this id, ignoring");
1257 if (server->requests[i].received) {
1258 pthread_mutex_unlock(&server->newrq_mutex);
1260 debug(DBG_INFO, "clientrd: already received, ignoring");
1264 if (!validauth(buf, server->requests[i].buf + 4, (unsigned char *)server->peer.secret)) {
1265 pthread_mutex_unlock(&server->newrq_mutex);
1267 debug(DBG_WARN, "clientrd: invalid auth, ignoring");
1271 from = server->requests[i].from;
1272 len = RADLEN(buf) - 20;
1275 if (!attrvalidate(attrs, len)) {
1276 pthread_mutex_unlock(&server->newrq_mutex);
1278 debug(DBG_WARN, "clientrd: attribute validation failed, ignoring packet");
1282 /* Message Authenticator */
1283 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1285 if (ATTRVALLEN(messageauth) != 16) {
1286 pthread_mutex_unlock(&server->newrq_mutex);
1288 debug(DBG_WARN, "clientrd: illegal message auth attribute length, ignoring packet");
1291 memcpy(tmp, buf + 4, 16);
1292 memcpy(buf + 4, server->requests[i].buf + 4, 16);
1293 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->peer.secret)) {
1294 pthread_mutex_unlock(&server->newrq_mutex);
1296 debug(DBG_WARN, "clientrd: message authentication failed");
1299 memcpy(buf + 4, tmp, 16);
1300 debug(DBG_DBG, "clientrd: message auth ok");
1303 if (*server->requests[i].buf == RAD_Status_Server) {
1304 server->requests[i].received = 1;
1305 pthread_mutex_unlock(&server->newrq_mutex);
1307 debug(DBG_INFO, "clientrd: got status server response from %s", server->peer.host);
1312 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
1313 if (ATTRVALLEN(attr) <= 4)
1316 if (((uint16_t *)attr)[1] != 0 || ntohs(((uint16_t *)attr)[2]) != 311) /* 311 == MS */
1319 sublen = ATTRVALLEN(attr) - 4;
1320 subattrs = ATTRVAL(attr) + 4;
1321 if (!attrvalidate(subattrs, sublen) ||
1322 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
1323 server->requests + i, server->peer.secret, from->peer.secret) ||
1324 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
1325 server->requests + i, server->peer.secret, from->peer.secret))
1329 pthread_mutex_unlock(&server->newrq_mutex);
1331 debug(DBG_WARN, "clientrd: MS attribute handling failed, ignoring packet");
1335 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject) {
1336 attr = attrget(server->requests[i].buf + 20, RADLEN(server->requests[i].buf) - 20, RAD_Attr_User_Name);
1337 /* we know the attribute exists */
1338 memcpy(tmp, ATTRVAL(attr), ATTRVALLEN(attr));
1339 tmp[ATTRVALLEN(attr)] = '\0';
1341 case RAD_Access_Accept:
1342 debug(DBG_INFO, "Access Accept for %s from %s", tmp, server->peer.host);
1344 case RAD_Access_Reject:
1345 debug(DBG_INFO, "Access Reject for %s from %s", tmp, server->peer.host);
1350 /* once we set received = 1, requests[i] may be reused */
1351 buf[1] = (char)server->requests[i].origid;
1352 memcpy(buf + 4, server->requests[i].origauth, 16);
1354 printauth("origauth/buf+4", buf + 4);
1358 if (!createmessageauth(buf, ATTRVAL(messageauth), from->peer.secret)) {
1359 pthread_mutex_unlock(&server->newrq_mutex);
1363 debug(DBG_DBG, "clientrd: computed messageauthattr");
1366 if (from->peer.type == 'U')
1367 fromsa = server->requests[i].fromsa;
1368 server->requests[i].received = 1;
1369 pthread_mutex_unlock(&server->newrq_mutex);
1371 debug(DBG_DBG, "clientrd: giving packet back to where it came from");
1372 sendreply(from, buf, from->peer.type == 'U' ? &fromsa : NULL);
1376 void *clientwr(void *arg) {
1377 struct server *server = (struct server *)arg;
1379 pthread_t clientrdth;
1382 struct timeval now, lastsend;
1383 struct timespec timeout;
1384 struct request statsrvrq;
1385 unsigned char statsrvbuf[38];
1387 memset(&timeout, 0, sizeof(struct timespec));
1389 if (server->statusserver) {
1390 memset(&statsrvrq, 0, sizeof(struct request));
1391 memset(statsrvbuf, 0, sizeof(statsrvbuf));
1392 statsrvbuf[0] = RAD_Status_Server;
1394 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
1395 statsrvbuf[21] = 18;
1396 gettimeofday(&lastsend, NULL);
1399 if (server->peer.type == 'U') {
1400 if ((server->sock = connecttoserver(server->peer.addrinfo)) < 0)
1401 debugx(1, DBG_ERR, "clientwr: connecttoserver failed");
1403 tlsconnect(server, NULL, "new client");
1405 if (pthread_create(&clientrdth, NULL, clientrd, (void *)server))
1406 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
1409 pthread_mutex_lock(&server->newrq_mutex);
1410 if (!server->newrq) {
1411 gettimeofday(&now, NULL);
1412 if (server->statusserver) {
1413 /* random 0-7 seconds */
1414 RAND_bytes(&rnd, 1);
1416 if (!timeout.tv_sec || timeout.tv_sec - now.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
1417 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
1419 if (timeout.tv_sec) {
1420 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
1421 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
1424 debug(DBG_DBG, "clientwr: waiting for new request");
1425 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
1428 if (server->newrq) {
1429 debug(DBG_DBG, "clientwr: got new request");
1432 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
1433 pthread_mutex_unlock(&server->newrq_mutex);
1435 for (i = 0; i < MAX_REQUESTS; i++) {
1436 pthread_mutex_lock(&server->newrq_mutex);
1437 while (!server->requests[i].buf && i < MAX_REQUESTS)
1439 if (i == MAX_REQUESTS) {
1440 pthread_mutex_unlock(&server->newrq_mutex);
1443 rq = server->requests + i;
1446 debug(DBG_DBG, "clientwr: removing received packet from queue");
1448 /* setting this to NULL means that it can be reused */
1450 pthread_mutex_unlock(&server->newrq_mutex);
1454 gettimeofday(&now, NULL);
1455 if (now.tv_sec < rq->expiry.tv_sec) {
1456 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
1457 timeout.tv_sec = rq->expiry.tv_sec;
1458 pthread_mutex_unlock(&server->newrq_mutex);
1462 if (rq->tries == (*rq->buf == RAD_Status_Server || server->peer.type == 'T'
1463 ? 1 : REQUEST_RETRIES)) {
1464 debug(DBG_DBG, "clientwr: removing expired packet from queue");
1465 if (*rq->buf == RAD_Status_Server)
1466 debug(DBG_WARN, "clientwr: no status server response, %s dead?", server->peer.host);
1468 /* setting this to NULL means that it can be reused */
1470 pthread_mutex_unlock(&server->newrq_mutex);
1473 pthread_mutex_unlock(&server->newrq_mutex);
1475 rq->expiry.tv_sec = now.tv_sec +
1476 (*rq->buf == RAD_Status_Server || server->peer.type == 'T'
1477 ? REQUEST_EXPIRY : REQUEST_EXPIRY / REQUEST_RETRIES);
1478 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
1479 timeout.tv_sec = rq->expiry.tv_sec;
1481 clientradput(server, server->requests[i].buf);
1482 gettimeofday(&lastsend, NULL);
1485 if (server->statusserver) {
1486 gettimeofday(&now, NULL);
1487 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
1488 if (!RAND_bytes(statsrvbuf + 4, 16)) {
1489 debug(DBG_WARN, "clientwr: failed to generate random auth");
1492 statsrvrq.buf = malloc(sizeof(statsrvbuf));
1493 if (!statsrvrq.buf) {
1494 debug(DBG_ERR, "clientwr: malloc failed");
1497 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
1498 debug(DBG_DBG, "clientwr: sending status server to %s", server->peer.host);
1499 lastsend.tv_sec = now.tv_sec;
1500 sendrq(server, &statsrvrq);
1506 void *udpserverwr(void *arg) {
1507 struct replyq *replyq = &udp_server_replyq;
1508 struct reply *reply = replyq->replies;
1510 pthread_mutex_lock(&replyq->count_mutex);
1512 while (!replyq->count) {
1513 debug(DBG_DBG, "udp server writer, waiting for signal");
1514 pthread_cond_wait(&replyq->count_cond, &replyq->count_mutex);
1515 debug(DBG_DBG, "udp server writer, got signal");
1517 pthread_mutex_unlock(&replyq->count_mutex);
1519 if (sendto(udp_server_sock, reply->buf, RADLEN(reply->buf), 0,
1520 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
1521 debug(DBG_WARN, "sendudp: send failed");
1524 pthread_mutex_lock(&replyq->count_mutex);
1526 memmove(replyq->replies, replyq->replies + 1,
1527 replyq->count * sizeof(struct reply));
1531 void *udpserverrd(void *arg) {
1533 pthread_t udpserverwrth;
1535 if ((udp_server_sock = bindtoaddr(udp_server_listen->addrinfo)) < 0)
1536 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
1538 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
1539 udp_server_listen->host ? udp_server_listen->host : "*", udp_server_listen->port);
1541 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
1542 debugx(1, DBG_ERR, "pthread_create failed");
1545 memset(&rq, 0, sizeof(struct request));
1546 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
1551 void *tlsserverwr(void *arg) {
1553 unsigned long error;
1554 struct client *client = (struct client *)arg;
1555 struct replyq *replyq;
1557 debug(DBG_DBG, "tlsserverwr starting for %s", client->peer.host);
1558 replyq = client->replyq;
1559 pthread_mutex_lock(&replyq->count_mutex);
1561 while (!replyq->count) {
1562 if (client->peer.ssl) {
1563 debug(DBG_DBG, "tls server writer, waiting for signal");
1564 pthread_cond_wait(&replyq->count_cond, &replyq->count_mutex);
1565 debug(DBG_DBG, "tls server writer, got signal");
1567 if (!client->peer.ssl) {
1568 /* ssl might have changed while waiting */
1569 pthread_mutex_unlock(&replyq->count_mutex);
1570 debug(DBG_DBG, "tlsserverwr: exiting as requested");
1574 pthread_mutex_unlock(&replyq->count_mutex);
1575 cnt = SSL_write(client->peer.ssl, replyq->replies->buf, RADLEN(replyq->replies->buf));
1577 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
1578 cnt, RADLEN(replyq->replies->buf));
1580 while ((error = ERR_get_error()))
1581 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
1582 free(replyq->replies->buf);
1584 pthread_mutex_lock(&replyq->count_mutex);
1586 memmove(replyq->replies, replyq->replies + 1, replyq->count * sizeof(struct reply));
1590 void *tlsserverrd(void *arg) {
1592 unsigned long error;
1594 struct client *client = (struct client *)arg;
1595 pthread_t tlsserverwrth;
1598 debug(DBG_DBG, "tlsserverrd starting for %s", client->peer.host);
1599 ssl = client->peer.ssl;
1601 if (SSL_accept(ssl) <= 0) {
1602 while ((error = ERR_get_error()))
1603 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
1604 debug(DBG_ERR, "SSL_accept failed");
1607 if (tlsverifycert(&client->peer)) {
1608 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
1609 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
1613 memset(&rq, 0, sizeof(struct request));
1614 rq.buf = radtlsget(client->peer.ssl);
1617 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->peer.host);
1621 debug(DBG_ERR, "tlsserverrd: connection lost");
1622 /* stop writer by setting peer.ssl to NULL and give signal in case waiting for data */
1623 client->peer.ssl = NULL;
1624 pthread_mutex_lock(&client->replyq->count_mutex);
1625 pthread_cond_signal(&client->replyq->count_cond);
1626 pthread_mutex_unlock(&client->replyq->count_mutex);
1627 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
1628 pthread_join(tlsserverwrth, NULL);
1632 s = SSL_get_fd(ssl);
1634 shutdown(s, SHUT_RDWR);
1636 debug(DBG_DBG, "tlsserverrd thread for %s exiting", client->peer.host);
1637 client->peer.ssl = NULL;
1642 pthread_t tlsserverth;
1644 struct sockaddr_storage from;
1645 size_t fromlen = sizeof(from);
1646 struct client *client;
1648 if ((s = bindtoaddr(tcp_server_listen->addrinfo)) < 0)
1649 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
1652 debug(DBG_WARN, "listening for incoming TCP on %s:%s",
1653 tcp_server_listen->host ? tcp_server_listen->host : "*", tcp_server_listen->port);
1656 snew = accept(s, (struct sockaddr *)&from, &fromlen);
1658 debug(DBG_WARN, "accept failed");
1661 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
1663 client = find_client('T', (struct sockaddr *)&from, NULL);
1665 debug(DBG_WARN, "ignoring request, not a known TLS client");
1666 shutdown(snew, SHUT_RDWR);
1671 if (client->peer.ssl) {
1672 debug(DBG_WARN, "Ignoring incoming TLS connection, already have one from this client");
1673 shutdown(snew, SHUT_RDWR);
1677 client->peer.ssl = SSL_new(ssl_ctx);
1678 SSL_set_fd(client->peer.ssl, snew);
1679 if (pthread_create(&tlsserverth, NULL, tlsserverrd, (void *)client)) {
1680 debug(DBG_ERR, "tlslistener: pthread_create failed");
1681 SSL_free(client->peer.ssl);
1682 shutdown(snew, SHUT_RDWR);
1684 client->peer.ssl = NULL;
1687 pthread_detach(tlsserverth);
1692 void addrealm(char *value, char *server) {
1694 struct realm *realm;
1696 for (i = 0; i < server_count; i++)
1697 if (!strcasecmp(server, servers[i].peer.host))
1699 if (i == server_count)
1700 debugx(1, DBG_ERR, "addrealm failed, no server %s", server);
1702 /* temporary warnings */
1704 debugx(1, DBG_ERR, "Regexps are now used for specifying realms, a string\nstarting with '*' is meaningless, you probably want '.*' for matching everything\nEXITING\n");
1705 if (value[strlen(value) - 1] != '$' && value[strlen(value) - 1] != '*') {
1706 debug(DBG_ERR, "Regexps are now used for specifying realms, you\nprobably want to rewrite this as e.g. '@example\\.com$' or '\\.com$'\nYou can even do things like '^[a-n].*@example\\.com$' to make about half of the\nusers use this server. Note that the matching is case insensitive.\n");
1710 realms = realloc(realms, realm_count * sizeof(struct realm));
1712 debugx(1, DBG_ERR, "malloc failed");
1713 realm = realms + realm_count - 1;
1714 memset(realm, 0, sizeof(struct realm));
1715 realm->name = stringcopy(value, 0);
1716 realm->server = servers + i;
1717 if (regcomp(&realm->regex, value, REG_ICASE | REG_NOSUB))
1718 debugx(1, DBG_ERR, "addrealm: failed to compile regular expression %s", value);
1719 debug(DBG_DBG, "addrealm: added realm %s for server %s", value, server);
1722 char *parsehostport(char *s, struct peer *peer) {
1727 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
1731 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
1733 debugx(1, DBG_ERR, "no ] matching initial [");
1737 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
1740 debugx(1, DBG_ERR, "missing host/address");
1742 peer->host = stringcopy(field, p - field);
1745 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
1746 debugx(1, DBG_ERR, "unexpected character after ]");
1749 /* port number or service name is specified */;
1751 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
1753 debugx(1, DBG_ERR, "syntax error, : but no following port");
1754 peer->port = stringcopy(field, p - field);
1756 peer->port = stringcopy(peer->type == 'U' ? DEFAULT_UDP_PORT : DEFAULT_TLS_PORT, 0);
1760 /* TODO remove this */
1761 /* * is default, else longest match ... ";" used for separator */
1762 char *parserealmlist(char *s, struct server *server) {
1769 for (p = s, n = 1; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++)
1774 debugx(1, DBG_ERR, "realm list must be specified");
1776 realmdata = stringcopy(s, l);
1777 realms = malloc((1+n) * sizeof(char *));
1779 debugx(1, DBG_ERR, "malloc failed");
1780 realms[0] = realmdata;
1781 for (n = 1, i = 0; i < l; i++)
1782 if (realmdata[i] == ';') {
1783 realmdata[i] = '\0';
1784 realms[n++] = realmdata + i + 1;
1786 for (i = 0; i < n; i++)
1787 addrealm(realms[i], server->peer.host);
1795 for (start = s;; s++)
1796 if (!*s || *s == ';' || *s == ' ' || *s == '\t' || *s == '\n') {
1797 if (s - start > 0) {
1798 realm = stringcopy(start, s - start);
1799 addrealm(realm, server->peer.host);
1809 FILE *openconfigfile(const char *filename) {
1811 char pathname[100], *base;
1813 f = fopen(filename, "r");
1815 debug(DBG_DBG, "reading config file %s", filename);
1819 if (strlen(filename) + 1 <= sizeof(pathname)) {
1820 /* basename() might modify the string */
1821 strcpy(pathname, filename);
1822 base = basename(pathname);
1823 f = fopen(base, "r");
1827 debugx(1, DBG_ERR, "could not read config file %s nor %s\n%s", filename, base, strerror(errno));
1829 debug(DBG_DBG, "reading config file %s", base);
1833 /* exactly one argument must be non-NULL */
1834 void getconfig(const char *serverfile, const char *clientfile) {
1838 struct client *client;
1839 struct server *server;
1841 int i, count, *ucount, *tcount;
1843 f = openconfigfile(serverfile ? serverfile : clientfile);
1845 ucount = &server_udp_count;
1846 tcount = &server_tls_count;
1848 ucount = &client_udp_count;
1849 tcount = &client_tls_count;
1851 while (fgets(line, 1024, f)) {
1852 for (p = line; *p == ' ' || *p == '\t'; p++);
1864 debugx(1, DBG_ERR, "type must be U or T, got %c", *p);
1869 count = server_count = server_udp_count + server_tls_count;
1870 servers = calloc(count, sizeof(struct server));
1872 debugx(1, DBG_ERR, "malloc failed");
1874 if (client_udp_count) {
1875 udp_server_replyq.replies = malloc(client_udp_count * MAX_REQUESTS * sizeof(struct reply));
1876 if (!udp_server_replyq.replies)
1877 debugx(1, DBG_ERR, "malloc failed");
1878 udp_server_replyq.size = client_udp_count * MAX_REQUESTS;
1879 udp_server_replyq.count = 0;
1880 pthread_mutex_init(&udp_server_replyq.count_mutex, NULL);
1881 pthread_cond_init(&udp_server_replyq.count_cond, NULL);
1884 count = client_count = client_udp_count + client_tls_count;
1885 clients = calloc(count, sizeof(struct client));
1887 debugx(1, DBG_ERR, "malloc failed");
1891 for (i = 0; i < count && fgets(line, 1024, f);) {
1893 server = &servers[i];
1894 peer = &server->peer;
1896 client = &clients[i];
1897 peer = &client->peer;
1899 for (p = line; *p == ' ' || *p == '\t'; p++);
1900 if (*p == '#' || *p == '\n')
1902 peer->type = *p; /* we already know it must be U or T */
1903 for (p++; *p == ' ' || *p == '\t'; p++);
1904 p = parsehostport(p, peer);
1905 for (; *p == ' ' || *p == '\t'; p++);
1907 p = parserealmlist(p, server);
1908 for (; *p == ' ' || *p == '\t'; p++);
1911 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
1913 /* no secret set and end of line, line is complete if TLS */
1914 if (peer->type == 'U')
1915 debugx(1, DBG_ERR, "secret must be specified for UDP");
1916 peer->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
1918 peer->secret = stringcopy(field, p - field);
1919 /* check that rest of line only white space */
1920 for (; *p == ' ' || *p == '\t'; p++);
1921 if (*p && *p != '\n')
1922 debugx(1, DBG_ERR, "max 4 fields per line, found a 5th");
1925 if ((serverfile && !resolvepeer(&server->peer, 0)) ||
1926 (clientfile && !resolvepeer(&client->peer, 0)))
1927 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", peer->host, peer->port);
1930 pthread_mutex_init(&server->lock, NULL);
1932 server->requests = calloc(MAX_REQUESTS, sizeof(struct request));
1933 if (!server->requests)
1934 debugx(1, DBG_ERR, "malloc failed");
1936 pthread_mutex_init(&server->newrq_mutex, NULL);
1937 pthread_cond_init(&server->newrq_cond, NULL);
1939 if (peer->type == 'U')
1940 client->replyq = &udp_server_replyq;
1942 client->replyq = malloc(sizeof(struct replyq));
1943 if (!client->replyq)
1944 debugx(1, DBG_ERR, "malloc failed");
1945 client->replyq->replies = calloc(MAX_REQUESTS, sizeof(struct reply));
1946 if (!client->replyq->replies)
1947 debugx(1, DBG_ERR, "malloc failed");
1948 client->replyq->size = MAX_REQUESTS;
1949 client->replyq->count = 0;
1950 pthread_mutex_init(&client->replyq->count_mutex, NULL);
1951 pthread_cond_init(&client->replyq->count_cond, NULL);
1954 debug(DBG_DBG, "got type %c, host %s, port %s, secret %s", peer->type, peer->host, peer->port, peer->secret);
1960 struct peer *server_create(char type) {
1961 struct peer *server;
1964 server = malloc(sizeof(struct peer));
1966 debugx(1, DBG_ERR, "malloc failed");
1967 memset(server, 0, sizeof(struct peer));
1968 server->type = type;
1969 conf = (type == 'T' ? options.listentcp : options.listenudp);
1971 parsehostport(conf, server);
1972 if (!strcmp(server->host, "*")) {
1974 server->host = NULL;
1977 server->port = stringcopy(type == 'T' ? DEFAULT_TLS_PORT : DEFAULT_UDP_PORT, 0);
1978 if (!resolvepeer(server, AI_PASSIVE))
1979 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", server->host, server->port);
1983 /* Parses config with following syntax:
1986 * option-name = value
1988 * option-name value {
1989 * option-name [=] value
1993 void getgeneralconfig(FILE *f, char *block, ...) {
1996 char *tokens[3], *opt, *val, *word, **str;
1997 int type, tcount, conftype;
1998 void (*cbk)(FILE *, char *, char *);
2000 while (fgets(line, 1024, f)) {
2001 tokens[0] = strtok(line, " \t\n");
2002 if (!*tokens || **tokens == '#')
2004 for (tcount = 1; tcount < 3 && (tokens[tcount] = strtok(NULL, " \t\n")); tcount++);
2006 if (tcount && **tokens == '}') {
2009 debugx(1, DBG_ERR, "configuration error, found } with no matching {");
2016 conftype = CONF_STR;
2019 if (tokens[1][0] == '=' && tokens[1][1] == '\0') {
2022 conftype = CONF_STR;
2025 if (tokens[2][0] == '{' && tokens[2][1] == '\0') {
2028 conftype = CONF_CBK;
2034 debugx(1, DBG_ERR, "configuration error in block %s, line starting with %s", block, tokens[0]);
2035 debugx(1, DBG_ERR, "configuration error, syntax error in line starting with %s", tokens[0]);
2038 va_start(ap, block);
2039 while ((word = va_arg(ap, char *))) {
2040 type = va_arg(ap, int);
2043 str = va_arg(ap, char **);
2045 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2048 cbk = va_arg(ap, void (*)(FILE *, char *, char *));
2051 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2053 if (!strcasecmp(opt, word))
2060 debugx(1, DBG_ERR, "configuration error in block %s, unknown option %s", block, opt);
2061 debugx(1, DBG_ERR, "configuration error, unknown option %s", opt);
2064 if (type != conftype) {
2066 debugx(1, DBG_ERR, "configuration error in block %s, wrong syntax for option %s", block, opt);
2067 debugx(1, DBG_ERR, "configuration error, wrong syntax for option %s", opt);
2073 debug(DBG_DBG, "getgeneralconfig: block %s: %s = %s", block, opt, val);
2075 debug(DBG_DBG, "getgeneralconfig: %s = %s", opt, val);
2076 *str = stringcopy(val, 0);
2082 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2087 void confclsrv_cb(FILE *f, char *opt, char *val) {
2088 char *type = NULL, *secret = NULL, *port = NULL, *statusserver = NULL;
2090 struct client *client = NULL;
2091 struct server *server = NULL;
2094 block = malloc(strlen(opt) + strlen(val) + 2);
2096 debugx(1, DBG_ERR, "malloc failed");
2097 sprintf(block, "%s %s", opt, val);
2098 debug(DBG_DBG, "confclsrv_cb called for %s", block);
2100 if (!strcasecmp(opt, "client")) {
2101 getgeneralconfig(f, block,
2102 "type", CONF_STR, &type,
2103 "secret", CONF_STR, &secret,
2107 clients = realloc(clients, client_count * sizeof(struct client));
2109 debugx(1, DBG_ERR, "malloc failed");
2110 client = clients + client_count - 1;
2111 memset(client, 0, sizeof(struct client));
2112 peer = &client->peer;
2114 getgeneralconfig(f, block,
2115 "type", CONF_STR, &type,
2116 "secret", CONF_STR, &secret,
2117 "port", CONF_STR, &port,
2118 "StatusServer", CONF_STR, &statusserver,
2122 servers = realloc(servers, server_count * sizeof(struct server));
2124 debugx(1, DBG_ERR, "malloc failed");
2125 server = servers + server_count - 1;
2126 memset(server, 0, sizeof(struct server));
2127 peer = &server->peer;
2130 if (!strcasecmp(statusserver, "on"))
2131 server->statusserver = 1;
2132 else if (strcasecmp(statusserver, "off"))
2133 debugx(1, DBG_ERR, "error in block %s, StatusServer is %s, must be on or off", block, statusserver);
2138 peer->host = stringcopy(val, 0);
2140 if (type && !strcasecmp(type, "udp")) {
2147 peer->port = stringcopy(DEFAULT_UDP_PORT, 0);
2149 } else if (type && !strcasecmp(type, "tls")) {
2156 peer->port = stringcopy(DEFAULT_TLS_PORT, 0);
2159 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
2162 if (!resolvepeer(peer, 0))
2163 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", peer->host, peer->port);
2166 if (peer->type == 'U')
2167 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
2168 peer->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
2170 peer->secret = secret;
2174 if (peer->type == 'U')
2175 client->replyq = &udp_server_replyq;
2177 client->replyq = malloc(sizeof(struct replyq));
2178 if (!client->replyq)
2179 debugx(1, DBG_ERR, "malloc failed");
2180 client->replyq->replies = calloc(MAX_REQUESTS, sizeof(struct reply));
2181 if (!client->replyq->replies)
2182 debugx(1, DBG_ERR, "malloc failed");
2183 client->replyq->size = MAX_REQUESTS;
2184 client->replyq->count = 0;
2185 pthread_mutex_init(&client->replyq->count_mutex, NULL);
2186 pthread_cond_init(&client->replyq->count_cond, NULL);
2189 pthread_mutex_init(&server->lock, NULL);
2191 server->requests = calloc(MAX_REQUESTS, sizeof(struct request));
2192 if (!server->requests)
2193 debugx(1, DBG_ERR, "malloc failed");
2195 pthread_mutex_init(&server->newrq_mutex, NULL);
2196 pthread_cond_init(&server->newrq_cond, NULL);
2202 void confrealm_cb(FILE *f, char *opt, char *val) {
2203 char *server = NULL;
2206 block = malloc(strlen(opt) + strlen(val) + 2);
2208 debugx(1, DBG_ERR, "malloc failed");
2209 sprintf(block, "%s %s", opt, val);
2210 debug(DBG_DBG, "confrealm_cb called for %s", block);
2212 getgeneralconfig(f, block,
2213 "server", CONF_STR, &server,
2217 debugx(1, DBG_ERR, "error in block %s, server must be specified", block);
2219 addrealm(val, server);
2224 void getmainconfig(const char *configfile) {
2226 char *loglevel = NULL;
2228 f = openconfigfile(configfile);
2229 memset(&options, 0, sizeof(options));
2231 getgeneralconfig(f, NULL,
2232 "TLSCACertificateFile", CONF_STR, &options.tlscacertificatefile,
2233 "TLSCACertificatePath", CONF_STR, &options.tlscacertificatepath,
2234 "TLSCertificateFile", CONF_STR, &options.tlscertificatefile,
2235 "TLSCertificateKeyFile", CONF_STR, &options.tlscertificatekeyfile,
2236 "TLSCertificateKeyPassword", CONF_STR, &options.tlscertificatekeypassword,
2237 "ListenUDP", CONF_STR, &options.listenudp,
2238 "ListenTCP", CONF_STR, &options.listentcp,
2239 "LogLevel", CONF_STR, &loglevel,
2240 "LogDestination", CONF_STR, &options.logdestination,
2241 "Client", CONF_CBK, confclsrv_cb,
2242 "Server", CONF_CBK, confclsrv_cb,
2243 "Realm", CONF_CBK, confrealm_cb,
2249 if (strlen(loglevel) != 1 || *loglevel < '1' || *loglevel > '4')
2250 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %s, must be 1, 2, 3 or 4", configfile, loglevel);
2251 options.loglevel = *loglevel - '0';
2255 if (client_udp_count) {
2256 udp_server_replyq.replies = malloc(client_udp_count * MAX_REQUESTS * sizeof(struct reply));
2257 if (!udp_server_replyq.replies)
2258 debugx(1, DBG_ERR, "malloc failed");
2259 udp_server_replyq.size = client_udp_count * MAX_REQUESTS;
2260 udp_server_replyq.count = 0;
2261 pthread_mutex_init(&udp_server_replyq.count_mutex, NULL);
2262 pthread_cond_init(&udp_server_replyq.count_cond, NULL);
2266 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *loglevel, char **configfile) {
2269 while ((c = getopt(argc, argv, "c:d:fv")) != -1) {
2272 *configfile = optarg;
2275 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
2276 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
2277 *loglevel = *optarg - '0';
2283 debugx(0, DBG_ERR, "radsecproxy revision $Rev$");
2288 if (!(argc - optind))
2292 debug(DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -v ]", argv[0]);
2296 int main(int argc, char **argv) {
2297 pthread_t udpserverth;
2299 uint8_t foreground = 0, loglevel = 0;
2300 char *configfile = NULL;
2302 debug_init("radsecproxy");
2303 debug_set_level(DEBUG_LEVEL);
2304 getargs(argc, argv, &foreground, &loglevel, &configfile);
2306 debug_set_level(loglevel);
2307 getmainconfig(configfile ? configfile : CONFIG_MAIN);
2309 options.loglevel = loglevel;
2310 else if (options.loglevel)
2311 debug_set_level(options.loglevel);
2313 options.logdestination = NULL;
2315 if (!options.logdestination)
2316 options.logdestination = "x-syslog://";
2317 debug_set_destination(options.logdestination);
2320 /* TODO remove getconfig completely when all use new config method */
2322 getconfig(CONFIG_SERVERS, NULL);
2324 getconfig(NULL, CONFIG_CLIENTS);
2326 /* TODO exit if not at least one client and one server configured */
2328 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
2330 if (!foreground && (daemon(0, 0) < 0))
2331 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
2333 if (client_udp_count) {
2334 udp_server_listen = server_create('U');
2335 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
2336 debugx(1, DBG_ERR, "pthread_create failed");
2339 if (client_tls_count || server_tls_count)
2340 ssl_ctx = ssl_init();
2342 for (i = 0; i < server_count; i++)
2343 if (pthread_create(&servers[i].clientth, NULL, clientwr, (void *)&servers[i]))
2344 debugx(1, DBG_ERR, "pthread_create failed");
2346 if (client_tls_count) {
2347 tcp_server_listen = server_create('T');
2348 return tlslistener();
2351 /* just hang around doing nothing, anything to do here? */