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.
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
32 #include <sys/socket.h>
33 #include <netinet/in.h>
38 #include <sys/types.h>
39 #include <arpa/inet.h>
43 #include <openssl/ssl.h>
44 #include <openssl/rand.h>
45 #include <openssl/err.h>
46 #include <openssl/md5.h>
47 #include <openssl/hmac.h>
48 #include <openssl/x509v3.h>
51 #include "radsecproxy.h"
53 static struct options options;
54 struct list *clconfs, *srvconfs, *realms, *tlsconfs;
56 static int client_udp_count = 0;
57 static int client_tls_count = 0;
58 static int server_udp_count = 0;
59 static int server_tls_count = 0;
61 static struct clsrvconf *tcp_server_listen;
62 static struct clsrvconf *udp_server_listen;
63 static struct clsrvconf *udp_accserver_listen;
64 static struct replyq *udp_server_replyq = NULL;
65 static int udp_server_sock = -1;
66 static int udp_accserver_sock = -1;
67 static pthread_mutex_t *ssl_locks;
68 static long *ssl_lock_count;
72 /* callbacks for making OpenSSL thread safe */
73 unsigned long ssl_thread_id() {
74 return (unsigned long)pthread_self();
77 void ssl_locking_callback(int mode, int type, const char *file, int line) {
78 if (mode & CRYPTO_LOCK) {
79 pthread_mutex_lock(&ssl_locks[type]);
80 ssl_lock_count[type]++;
82 pthread_mutex_unlock(&ssl_locks[type]);
85 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
86 int pwdlen = strlen(userdata);
87 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
89 memcpy(buf, userdata, pwdlen);
93 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
98 err_cert = X509_STORE_CTX_get_current_cert(ctx);
99 err = X509_STORE_CTX_get_error(ctx);
100 depth = X509_STORE_CTX_get_error_depth(ctx);
102 if (depth > MAX_CERT_DEPTH) {
104 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
105 X509_STORE_CTX_set_error(ctx, err);
109 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
110 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
113 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
114 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
115 debug(DBG_WARN, "\tIssuer=%s", buf);
117 case X509_V_ERR_CERT_NOT_YET_VALID:
118 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
119 debug(DBG_WARN, "\tCertificate not yet valid");
121 case X509_V_ERR_CERT_HAS_EXPIRED:
122 debug(DBG_WARN, "Certificate has expired");
124 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
125 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
130 printf("certificate verify returns %d\n", ok);
135 int resolvepeer(struct clsrvconf *conf, int ai_flags) {
136 struct addrinfo hints, *addrinfo;
140 slash = conf->host ? strchr(conf->host, '/') : NULL;
144 debug(DBG_WARN, "resolvepeer: prefix length must be specified after the / in %s", conf->host);
148 if (*s < '0' || *s > '9') {
149 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
152 plen = atoi(slash + 1);
153 if (plen < 0 || plen > 128) {
154 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
159 memset(&hints, 0, sizeof(hints));
160 hints.ai_socktype = (conf->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
161 hints.ai_family = AF_UNSPEC;
162 hints.ai_flags = ai_flags;
164 hints.ai_flags |= AI_NUMERICHOST;
165 if (getaddrinfo(conf->host, conf->port, &hints, &addrinfo)) {
166 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", conf->host, conf->port);
172 switch (addrinfo->ai_family) {
175 debug(DBG_WARN, "resolvepeer: prefix length must be <= 32 in %s", conf->host);
176 freeaddrinfo(addrinfo);
183 debug(DBG_WARN, "resolvepeer: prefix must be IPv4 or IPv6 in %s", conf->host);
184 freeaddrinfo(addrinfo);
187 conf->prefixlen = plen;
189 conf->prefixlen = 255;
192 freeaddrinfo(conf->addrinfo);
193 conf->addrinfo = addrinfo;
197 int connecttoserver(struct addrinfo *addrinfo) {
199 struct addrinfo *res;
202 for (res = addrinfo; res; res = res->ai_next) {
203 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
205 debug(DBG_WARN, "connecttoserver: socket failed");
208 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
210 debug(DBG_WARN, "connecttoserver: connect failed");
217 int bindtoaddr(struct addrinfo *addrinfo) {
219 struct addrinfo *res;
221 for (res = addrinfo; res; res = res->ai_next) {
222 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
224 debug(DBG_WARN, "bindtoaddr: socket failed");
227 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
228 if (!bind(s, res->ai_addr, res->ai_addrlen))
230 debug(DBG_WARN, "bindtoaddr: bind failed");
236 /* returns 1 if the len first bits are equal, else 0 */
237 int prefixmatch(void *a1, void *a2, uint8_t len) {
238 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
240 if (l && memcmp(a1, a2, l))
245 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
248 /* returns the config with matching address, or NULL */
249 /* if conf argument is not NULL, we only check that one */
250 struct clsrvconf *find_conf(char type, struct sockaddr *addr, struct list *confs, struct clsrvconf *conf) {
251 struct sockaddr_in6 *sa6 = NULL;
252 struct in_addr *a4 = NULL;
253 struct addrinfo *res;
254 struct list_node *entry;
256 if (addr->sa_family == AF_INET6) {
257 sa6 = (struct sockaddr_in6 *)addr;
258 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
259 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
263 a4 = &((struct sockaddr_in *)addr)->sin_addr;
266 if (conf->type == type) {
267 if (conf->prefixlen == 255) {
268 for (res = conf->addrinfo; res; res = res->ai_next)
269 if ((a4 && res->ai_family == AF_INET &&
270 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
271 (sa6 && res->ai_family == AF_INET6 &&
272 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
275 res = conf->addrinfo;
277 ((a4 && res->ai_family == AF_INET &&
278 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
279 (sa6 && res->ai_family == AF_INET6 &&
280 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
287 for (entry = list_first(confs); entry; entry = list_next(entry)) {
288 conf = (struct clsrvconf *)entry->data;
289 if (conf->type == type) {
290 if (conf->prefixlen == 255) {
291 for (res = conf->addrinfo; res; res = res->ai_next)
292 if ((a4 && res->ai_family == AF_INET &&
293 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
294 (sa6 && res->ai_family == AF_INET6 &&
295 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
298 res = conf->addrinfo;
300 ((a4 && res->ai_family == AF_INET &&
301 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
302 (sa6 && res->ai_family == AF_INET6 &&
303 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
311 struct replyq *newreplyq() {
312 struct replyq *replyq;
314 replyq = malloc(sizeof(struct replyq));
316 debugx(1, DBG_ERR, "malloc failed");
317 replyq->replies = list_create();
318 if (!replyq->replies)
319 debugx(1, DBG_ERR, "malloc failed");
320 pthread_mutex_init(&replyq->mutex, NULL);
321 pthread_cond_init(&replyq->cond, NULL);
325 struct client *addclient(struct clsrvconf *conf) {
326 struct client *new = malloc(sizeof(struct client));
329 debug(DBG_ERR, "malloc failed");
332 if (!conf->clients) {
333 conf->clients = list_create();
334 if (!conf->clients) {
335 debug(DBG_ERR, "malloc failed");
340 memset(new, 0, sizeof(struct client));
342 new->replyq = conf->type == 'T' ? newreplyq() : udp_server_replyq;
344 list_push(conf->clients, new);
348 void removeclient(struct client *client) {
349 if (!client || !client->conf->clients)
352 list_removedata(client->conf->clients, client);
356 void addserver(struct clsrvconf *conf) {
358 debugx(1, DBG_ERR, "currently works with just one server per conf");
360 conf->servers = malloc(sizeof(struct server));
362 debugx(1, DBG_ERR, "malloc failed");
363 memset(conf->servers, 0, sizeof(struct server));
364 conf->servers->conf = conf;
366 conf->servers->sock = -1;
367 pthread_mutex_init(&conf->servers->lock, NULL);
368 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct request));
369 if (!conf->servers->requests)
370 debugx(1, DBG_ERR, "malloc failed");
371 conf->servers->newrq = 0;
372 pthread_mutex_init(&conf->servers->newrq_mutex, NULL);
373 pthread_cond_init(&conf->servers->newrq_cond, NULL);
376 /* exactly one of client and server must be non-NULL */
377 /* should probably take peer list (client(s) or server(s)) as argument instead */
378 /* if *peer == NULL we return who we received from, else require it to be from peer */
379 /* return from in sa if not NULL */
380 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
382 unsigned char buf[65536], *rad;
383 struct sockaddr_storage from;
384 socklen_t fromlen = sizeof(from);
386 struct list_node *node;
389 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
391 debug(DBG_WARN, "radudpget: recv failed");
394 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
397 debug(DBG_WARN, "radudpget: packet too small");
403 debug(DBG_WARN, "radudpget: length too small");
408 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
412 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
416 p = find_conf('U', (struct sockaddr *)&from, NULL, (*client)->conf);
418 p = find_conf('U', (struct sockaddr *)&from, clconfs, NULL);
421 p = find_conf('U', (struct sockaddr *)&from, NULL, (*server)->conf);
423 p = find_conf('U', (struct sockaddr *)&from, srvconfs, NULL);
426 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer, ignoring");
432 debug(DBG_ERR, "radudpget: malloc failed");
436 if (client && !*client) {
437 node = list_first(p->clients);
438 *client = node ? (struct client *)node->data : addclient(p);
443 } else if (server && !*server)
444 *server = p->servers;
448 memcpy(rad, buf, len);
454 int subjectaltnameaddr(X509 *cert, int family, struct in6_addr *addr) {
455 int loc, i, l, n, r = 0;
458 STACK_OF(GENERAL_NAME) *alt;
461 debug(DBG_DBG, "subjectaltnameaddr");
463 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
467 ex = X509_get_ext(cert, loc);
468 alt = X509V3_EXT_d2i(ex);
472 n = sk_GENERAL_NAME_num(alt);
473 for (i = 0; i < n; i++) {
474 gn = sk_GENERAL_NAME_value(alt, i);
475 if (gn->type != GEN_IPADD)
478 v = (char *)ASN1_STRING_data(gn->d.ia5);
479 l = ASN1_STRING_length(gn->d.ia5);
480 if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
481 && !memcmp(v, &addr, l)) {
486 GENERAL_NAMES_free(alt);
490 int subjectaltnameregexp(X509 *cert, int type, char *exact, regex_t *regex) {
491 int loc, i, l, n, r = 0;
494 STACK_OF(GENERAL_NAME) *alt;
497 debug(DBG_DBG, "subjectaltnameregexp");
499 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
503 ex = X509_get_ext(cert, loc);
504 alt = X509V3_EXT_d2i(ex);
508 n = sk_GENERAL_NAME_num(alt);
509 for (i = 0; i < n; i++) {
510 gn = sk_GENERAL_NAME_value(alt, i);
511 if (gn->type != type)
514 v = (char *)ASN1_STRING_data(gn->d.ia5);
515 l = ASN1_STRING_length(gn->d.ia5);
519 printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
522 if (memcmp(v, exact, l))
525 s = stringcopy((char *)v, l);
527 debug(DBG_ERR, "malloc failed");
530 if (regexec(regex, s, 0, NULL, 0)) {
539 GENERAL_NAMES_free(alt);
543 int tlsverifycert(SSL *ssl, struct clsrvconf *conf) {
550 uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
552 struct in6_addr addr;
554 if (SSL_get_verify_result(ssl) != X509_V_OK) {
555 debug(DBG_ERR, "tlsverifycert: basic validation failed");
556 while ((error = ERR_get_error()))
557 debug(DBG_ERR, "tlsverifycert: TLS: %s", ERR_error_string(error, NULL));
561 cert = SSL_get_peer_certificate(ssl);
563 debug(DBG_ERR, "tlsverifycert: failed to obtain certificate");
567 if (inet_pton(AF_INET, conf->host, &addr))
569 else if (inet_pton(AF_INET6, conf->host, &addr))
572 r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, conf->host, NULL);
576 debug(DBG_DBG, "tlsverifycert: No subjectaltname matching %s %s", type ? "address" : "host", conf->host);
579 debug(DBG_DBG, "tlsverifycert: Found subjectaltname matching %s %s", type ? "address" : "host", conf->host);
581 nm = X509_get_subject_name(cert);
584 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
587 e = X509_NAME_get_entry(nm, loc);
588 s = X509_NAME_ENTRY_get_data(e);
589 v = (char *) ASN1_STRING_data(s);
590 l = ASN1_STRING_length(s);
594 printfchars(NULL, "cn", NULL, v, l);
596 if (l == strlen(conf->host) && !strncasecmp(conf->host, v, l)) {
598 debug(DBG_DBG, "tlsverifycert: Found cn matching host %s", conf->host);
604 debug(DBG_ERR, "tlsverifycert: cn not matching host %s", conf->host);
608 if (conf->certuriregex) {
609 r = subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex);
611 debug(DBG_DBG, "tlsverifycert: subjectaltname URI not matching regex");
615 debug(DBG_DBG, "tlsverifycert: subjectaltname URI matching regex");
621 void tlsconnect(struct server *server, struct timeval *when, char *text) {
625 debug(DBG_DBG, "tlsconnect called from %s", text);
626 pthread_mutex_lock(&server->lock);
627 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
628 /* already reconnected, nothing to do */
629 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
630 pthread_mutex_unlock(&server->lock);
634 debug(DBG_DBG, "tlsconnect %s", text);
637 gettimeofday(&now, NULL);
638 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
639 if (server->connectionok) {
640 server->connectionok = 0;
642 } else if (elapsed < 5)
644 else if (elapsed < 300) {
645 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
647 } else if (elapsed < 100000) {
648 debug(DBG_INFO, "tlsconnect: sleeping %ds", 600);
651 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
652 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->conf->host, server->conf->port);
653 if (server->sock >= 0)
655 if ((server->sock = connecttoserver(server->conf->addrinfo)) < 0) {
656 debug(DBG_ERR, "tlsconnect: connecttoserver failed");
660 SSL_free(server->ssl);
661 server->ssl = SSL_new(server->conf->ssl_ctx);
662 SSL_set_fd(server->ssl, server->sock);
663 if (SSL_connect(server->ssl) > 0 && tlsverifycert(server->ssl, server->conf))
666 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->conf->host, server->conf->port);
667 gettimeofday(&server->lastconnecttry, NULL);
668 pthread_mutex_unlock(&server->lock);
671 unsigned char *radtlsget(SSL *ssl) {
673 unsigned char buf[4], *rad;
676 for (total = 0; total < 4; total += cnt) {
677 cnt = SSL_read(ssl, buf + total, 4 - total);
679 debug(DBG_ERR, "radtlsget: connection lost");
680 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
681 /* remote end sent close_notify, send one back */
691 debug(DBG_ERR, "radtlsget: malloc failed");
696 for (; total < len; total += cnt) {
697 cnt = SSL_read(ssl, rad + total, len - total);
699 debug(DBG_ERR, "radtlsget: connection lost");
700 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
701 /* remote end sent close_notify, send one back */
713 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
716 debug(DBG_DBG, "radtlsget: got %d bytes", total);
720 int clientradput(struct server *server, unsigned char *rad) {
724 struct timeval lastconnecttry;
727 if (server->conf->type == 'U') {
728 if (send(server->sock, rad, len, 0) >= 0) {
729 debug(DBG_DBG, "clienradput: sent UDP of length %d to %s port %s", len, server->conf->host, server->conf->port);
732 debug(DBG_WARN, "clientradput: send failed");
736 lastconnecttry = server->lastconnecttry;
737 while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
738 while ((error = ERR_get_error()))
739 debug(DBG_ERR, "clientradput: TLS: %s", ERR_error_string(error, NULL));
740 tlsconnect(server, &lastconnecttry, "clientradput");
741 lastconnecttry = server->lastconnecttry;
744 server->connectionok = 1;
745 debug(DBG_DBG, "clientradput: Sent %d bytes, Radius packet of length %d to TLS peer %s",
746 cnt, len, server->conf->host);
750 int radsign(unsigned char *rad, unsigned char *sec) {
751 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
752 static unsigned char first = 1;
753 static EVP_MD_CTX mdctx;
757 pthread_mutex_lock(&lock);
759 EVP_MD_CTX_init(&mdctx);
763 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
764 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
765 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
766 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
768 pthread_mutex_unlock(&lock);
772 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
773 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
774 static unsigned char first = 1;
775 static EVP_MD_CTX mdctx;
776 unsigned char hash[EVP_MAX_MD_SIZE];
780 pthread_mutex_lock(&lock);
782 EVP_MD_CTX_init(&mdctx);
788 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
789 EVP_DigestUpdate(&mdctx, rad, 4) &&
790 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
791 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
792 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
793 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
795 !memcmp(hash, rad + 4, 16));
796 pthread_mutex_unlock(&lock);
800 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
801 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
802 static unsigned char first = 1;
803 static HMAC_CTX hmacctx;
805 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
807 pthread_mutex_lock(&lock);
809 HMAC_CTX_init(&hmacctx);
813 memcpy(auth, authattr, 16);
814 memset(authattr, 0, 16);
816 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
817 HMAC_Update(&hmacctx, rad, RADLEN(rad));
818 HMAC_Final(&hmacctx, hash, &md_len);
819 memcpy(authattr, auth, 16);
821 debug(DBG_WARN, "message auth computation failed");
822 pthread_mutex_unlock(&lock);
826 if (memcmp(auth, hash, 16)) {
827 debug(DBG_WARN, "message authenticator, wrong value");
828 pthread_mutex_unlock(&lock);
832 pthread_mutex_unlock(&lock);
836 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
837 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
838 static unsigned char first = 1;
839 static HMAC_CTX hmacctx;
845 pthread_mutex_lock(&lock);
847 HMAC_CTX_init(&hmacctx);
851 memset(authattrval, 0, 16);
853 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
854 HMAC_Update(&hmacctx, rad, RADLEN(rad));
855 HMAC_Final(&hmacctx, authattrval, &md_len);
857 debug(DBG_WARN, "message auth computation failed");
858 pthread_mutex_unlock(&lock);
862 pthread_mutex_unlock(&lock);
866 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
868 if (ATTRTYPE(attrs) == type)
870 length -= ATTRLEN(attrs);
871 attrs += ATTRLEN(attrs);
876 void sendrq(struct server *to, struct request *rq) {
880 pthread_mutex_lock(&to->newrq_mutex);
881 /* might simplify if only try nextid, might be ok */
882 for (i = to->nextid; i < MAX_REQUESTS; i++)
883 if (!to->requests[i].buf)
885 if (i == MAX_REQUESTS) {
886 for (i = 0; i < to->nextid; i++)
887 if (!to->requests[i].buf)
889 if (i == to->nextid) {
890 debug(DBG_WARN, "No room in queue, dropping request");
892 pthread_mutex_unlock(&to->newrq_mutex);
897 rq->buf[1] = (char)i;
899 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
900 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->conf->secret)) {
902 pthread_mutex_unlock(&to->newrq_mutex);
906 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->host);
907 to->requests[i] = *rq;
912 debug(DBG_DBG, "signalling client writer");
913 pthread_cond_signal(&to->newrq_cond);
915 pthread_mutex_unlock(&to->newrq_mutex);
918 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
922 if (!radsign(buf, (unsigned char *)to->conf->secret)) {
924 debug(DBG_WARN, "sendreply: failed to sign message");
928 reply = malloc(sizeof(struct reply));
931 debug(DBG_ERR, "sendreply: malloc failed");
934 memset(reply, 0, sizeof(struct reply));
939 pthread_mutex_lock(&to->replyq->mutex);
941 first = list_first(to->replyq->replies) == NULL;
943 if (!list_push(to->replyq->replies, reply)) {
944 pthread_mutex_unlock(&to->replyq->mutex);
947 debug(DBG_ERR, "sendreply: malloc failed");
952 debug(DBG_DBG, "signalling server writer");
953 pthread_cond_signal(&to->replyq->cond);
955 pthread_mutex_unlock(&to->replyq->mutex);
958 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
959 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
960 static unsigned char first = 1;
961 static EVP_MD_CTX mdctx;
962 unsigned char hash[EVP_MAX_MD_SIZE], *input;
964 uint8_t i, offset = 0, out[128];
966 pthread_mutex_lock(&lock);
968 EVP_MD_CTX_init(&mdctx);
974 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
975 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
976 !EVP_DigestUpdate(&mdctx, input, 16) ||
977 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
979 pthread_mutex_unlock(&lock);
982 for (i = 0; i < 16; i++)
983 out[offset + i] = hash[i] ^ in[offset + i];
984 input = out + offset - 16;
989 memcpy(in, out, len);
990 pthread_mutex_unlock(&lock);
994 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
995 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
996 static unsigned char first = 1;
997 static EVP_MD_CTX mdctx;
998 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1000 uint8_t i, offset = 0, out[128];
1002 pthread_mutex_lock(&lock);
1004 EVP_MD_CTX_init(&mdctx);
1010 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1011 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1012 !EVP_DigestUpdate(&mdctx, input, 16) ||
1013 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1015 pthread_mutex_unlock(&lock);
1018 for (i = 0; i < 16; i++)
1019 out[offset + i] = hash[i] ^ in[offset + i];
1020 input = in + offset;
1025 memcpy(in, out, len);
1026 pthread_mutex_unlock(&lock);
1030 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1031 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1032 static unsigned char first = 1;
1033 static EVP_MD_CTX mdctx;
1034 unsigned char hash[EVP_MAX_MD_SIZE];
1035 unsigned int md_len;
1038 pthread_mutex_lock(&lock);
1040 EVP_MD_CTX_init(&mdctx);
1045 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
1046 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
1047 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
1050 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1051 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1052 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1053 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1054 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1055 pthread_mutex_unlock(&lock);
1060 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1063 for (i = 0; i < 16; i++)
1066 for (offset = 16; offset < len; offset += 16) {
1068 printf("text + offset - 16 c(%d): ", offset / 16);
1069 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1071 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1072 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1073 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1074 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1076 pthread_mutex_unlock(&lock);
1080 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1083 for (i = 0; i < 16; i++)
1084 text[offset + i] ^= hash[i];
1088 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
1091 pthread_mutex_unlock(&lock);
1095 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1096 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1097 static unsigned char first = 1;
1098 static EVP_MD_CTX mdctx;
1099 unsigned char hash[EVP_MAX_MD_SIZE];
1100 unsigned int md_len;
1104 pthread_mutex_lock(&lock);
1106 EVP_MD_CTX_init(&mdctx);
1111 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
1112 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
1113 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
1116 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1117 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1118 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1119 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1120 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1121 pthread_mutex_unlock(&lock);
1126 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1129 for (i = 0; i < 16; i++)
1130 plain[i] = text[i] ^ hash[i];
1132 for (offset = 16; offset < len; offset += 16) {
1134 printf("text + offset - 16 c(%d): ", offset / 16);
1135 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1137 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1138 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1139 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1140 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1142 pthread_mutex_unlock(&lock);
1146 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1149 for (i = 0; i < 16; i++)
1150 plain[offset + i] = text[offset + i] ^ hash[i];
1153 memcpy(text, plain, len);
1155 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
1158 pthread_mutex_unlock(&lock);
1162 struct realm *id2realm(char *id, uint8_t len) {
1163 struct list_node *entry;
1164 struct realm *realm;
1166 for (entry = list_first(realms); entry; entry = list_next(entry)) {
1167 realm = (struct realm *)entry->data;
1168 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
1169 debug(DBG_DBG, "found matching realm: %s", realm->name);
1176 int rqinqueue(struct server *to, struct client *from, uint8_t id) {
1179 pthread_mutex_lock(&to->newrq_mutex);
1180 for (i = 0; i < MAX_REQUESTS; i++)
1181 if (to->requests[i].buf && to->requests[i].origid == id && to->requests[i].from == from)
1183 pthread_mutex_unlock(&to->newrq_mutex);
1185 return i < MAX_REQUESTS;
1188 int attrvalidate(unsigned char *attrs, int length) {
1189 while (length > 1) {
1190 if (ATTRLEN(attrs) < 2) {
1191 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1194 length -= ATTRLEN(attrs);
1196 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1199 attrs += ATTRLEN(attrs);
1202 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1206 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1207 if (len < 16 || len > 128 || len % 16) {
1208 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1212 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1213 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1217 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
1219 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1220 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1226 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1229 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1230 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1233 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1234 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1240 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1241 char *oldsecret, char *newsecret) {
1242 unsigned char *attr;
1244 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1245 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1246 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1252 void rewriteattr(struct clsrvconf *conf, char *in) {
1253 size_t nmatch = 10, reslen = 0, start = 0;
1254 regmatch_t pmatch[10], *pfield;
1257 char *out = conf->rewriteattrreplacement;
1259 if (regexec(conf->rewriteattrregex, in, nmatch, pmatch, 0)) {
1260 debug(DBG_DBG, "rewriteattr: username not matching, no rewrite");
1264 for (i = start; out[i]; i++) {
1265 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1266 pfield = &pmatch[out[i + 1] - '0'];
1267 if (pfield->rm_so >= 0) {
1268 memcpy(result + reslen, out + start, i - start);
1269 reslen += i - start;
1270 memcpy(result + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1271 reslen += pfield->rm_eo - pfield->rm_so;
1278 memcpy(result + reslen, out + start, i + 1 - start);
1279 debug(DBG_DBG, "rewriteattr: username matching, would have rewritten to %s", result);
1282 void acclog(unsigned char *attrs, int length, char *host) {
1283 unsigned char *attr;
1286 attr = attrget(attrs, length, RAD_Attr_User_Name);
1288 debug(DBG_INFO, "acclog: accounting-request from %s without username attribute", host);
1291 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1292 username[ATTRVALLEN(attr)] = '\0';
1293 debug(DBG_INFO, "acclog: accounting-request from %s with username: %s", host, username);
1296 void respondaccounting(struct request *rq) {
1297 unsigned char *resp;
1301 debug(DBG_ERR, "respondstatusserver: malloc failed");
1304 memcpy(resp, rq->buf, 20);
1305 resp[0] = RAD_Accounting_Response;
1308 debug(DBG_DBG, "respondaccounting: responding to %s", rq->from->conf->host);
1309 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1312 void respondstatusserver(struct request *rq) {
1313 unsigned char *resp;
1317 debug(DBG_ERR, "respondstatusserver: malloc failed");
1320 memcpy(resp, rq->buf, 20);
1321 resp[0] = RAD_Access_Accept;
1324 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->conf->host);
1325 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1328 void respondreject(struct request *rq, char *message) {
1329 unsigned char *resp;
1332 if (message && *message)
1333 len += 2 + strlen(message);
1337 debug(DBG_ERR, "respondreject: malloc failed");
1340 memcpy(resp, rq->buf, 20);
1341 resp[0] = RAD_Access_Reject;
1342 *(uint16_t *)(resp + 2) = htons(len);
1343 if (message && *message) {
1344 resp[20] = RAD_Attr_Reply_Message;
1345 resp[21] = len - 20;
1346 memcpy(resp + 22, message, len - 22);
1348 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1351 struct server *realm2server(struct realm *realm) {
1352 struct list_node *entry;
1353 struct server *server, *best = NULL;
1355 for (entry = list_first(realm->srvconfs); entry; entry = list_next(entry)) {
1356 server = ((struct clsrvconf *)entry->data)->servers;
1357 if (!server->connectionok)
1359 if (!server->loststatsrv)
1365 if (server->loststatsrv < best->loststatsrv)
1371 void radsrv(struct request *rq) {
1372 uint8_t code, id, *auth, *attrs, *attr;
1374 struct server *to = NULL;
1376 unsigned char *buf, newauth[16];
1377 struct realm *realm = NULL;
1380 code = *(uint8_t *)buf;
1381 id = *(uint8_t *)(buf + 1);
1383 auth = (uint8_t *)(buf + 4);
1385 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1387 if (code != RAD_Access_Request && code != RAD_Status_Server && code != RAD_Accounting_Request) {
1388 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1396 if (!attrvalidate(attrs, len)) {
1397 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1402 if (code == RAD_Access_Request) {
1403 attr = attrget(attrs, len, RAD_Attr_User_Name);
1405 debug(DBG_WARN, "radsrv: ignoring request, no username attribute");
1409 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1410 username[ATTRVALLEN(attr)] = '\0';
1411 debug(DBG_DBG, "Access Request with username: %s", username);
1413 if (rq->from->conf->rewriteattrregex)
1414 rewriteattr(rq->from->conf, username);
1416 realm = id2realm(username, strlen(username));
1418 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1423 to = realm2server(realm);
1424 if (to && rqinqueue(to, rq->from, id)) {
1425 debug(DBG_INFO, "radsrv: already got request from host %s with id %d, ignoring", rq->from->conf->host, id);
1431 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1432 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(buf, ATTRVAL(attr), rq->from->conf->secret))) {
1433 debug(DBG_WARN, "radsrv: message authentication failed");
1438 if (code == RAD_Accounting_Request) {
1439 acclog(attrs, len, rq->from->conf->host);
1440 respondaccounting(rq);
1445 if (code == RAD_Status_Server) {
1446 respondstatusserver(rq);
1452 if (realm->message) {
1453 debug(DBG_INFO, "radsrv: sending reject to %s for %s", rq->from->conf->host, username);
1454 respondreject(rq, realm->message);
1460 if (!RAND_bytes(newauth, 16)) {
1461 debug(DBG_WARN, "radsrv: failed to generate random auth");
1467 printfchars(NULL, "auth", "%02x ", auth, 16);
1470 attr = attrget(attrs, len, RAD_Attr_User_Password);
1472 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1473 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth)) {
1479 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1481 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1482 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth)) {
1489 memcpy(rq->origauth, auth, 16);
1490 memcpy(auth, newauth, 16);
1494 void *clientrd(void *arg) {
1495 struct server *server = (struct server *)arg;
1496 struct client *from;
1498 unsigned char *buf, *messageauth, *subattrs, *attrs, *attr;
1499 struct sockaddr_storage fromsa;
1500 struct timeval lastconnecttry;
1504 lastconnecttry = server->lastconnecttry;
1505 buf = (server->conf->type == 'U' ? radudpget(server->sock, NULL, &server, NULL) : radtlsget(server->ssl));
1506 if (!buf && server->conf->type == 'T') {
1507 tlsconnect(server, &lastconnecttry, "clientrd");
1511 server->connectionok = 1;
1512 server->loststatsrv = 0;
1514 i = buf[1]; /* i is the id */
1517 case RAD_Access_Accept:
1518 debug(DBG_DBG, "got Access Accept with id %d", i);
1520 case RAD_Access_Reject:
1521 debug(DBG_DBG, "got Access Reject with id %d", i);
1523 case RAD_Access_Challenge:
1524 debug(DBG_DBG, "got Access Challenge with id %d", i);
1528 debug(DBG_INFO, "clientrd: discarding, only accept access accept, access reject and access challenge messages");
1532 pthread_mutex_lock(&server->newrq_mutex);
1533 if (!server->requests[i].buf || !server->requests[i].tries) {
1534 pthread_mutex_unlock(&server->newrq_mutex);
1536 debug(DBG_INFO, "clientrd: no matching request sent with this id, ignoring");
1540 if (server->requests[i].received) {
1541 pthread_mutex_unlock(&server->newrq_mutex);
1543 debug(DBG_INFO, "clientrd: already received, ignoring");
1547 if (!validauth(buf, server->requests[i].buf + 4, (unsigned char *)server->conf->secret)) {
1548 pthread_mutex_unlock(&server->newrq_mutex);
1550 debug(DBG_WARN, "clientrd: invalid auth, ignoring");
1554 from = server->requests[i].from;
1555 len = RADLEN(buf) - 20;
1558 if (!attrvalidate(attrs, len)) {
1559 pthread_mutex_unlock(&server->newrq_mutex);
1561 debug(DBG_WARN, "clientrd: attribute validation failed, ignoring packet");
1565 /* Message Authenticator */
1566 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1568 if (ATTRVALLEN(messageauth) != 16) {
1569 pthread_mutex_unlock(&server->newrq_mutex);
1571 debug(DBG_WARN, "clientrd: illegal message auth attribute length, ignoring packet");
1574 memcpy(tmp, buf + 4, 16);
1575 memcpy(buf + 4, server->requests[i].buf + 4, 16);
1576 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->conf->secret)) {
1577 pthread_mutex_unlock(&server->newrq_mutex);
1579 debug(DBG_WARN, "clientrd: message authentication failed");
1582 memcpy(buf + 4, tmp, 16);
1583 debug(DBG_DBG, "clientrd: message auth ok");
1586 if (*server->requests[i].buf == RAD_Status_Server) {
1587 server->requests[i].received = 1;
1588 pthread_mutex_unlock(&server->newrq_mutex);
1590 debug(DBG_INFO, "clientrd: got status server response from %s", server->conf->host);
1595 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
1596 if (ATTRVALLEN(attr) <= 4)
1599 if (attr[2] != 0 || attr[3] != 0 || attr[4] != 1 || attr[5] != 55) /* 311 == MS */
1602 sublen = ATTRVALLEN(attr) - 4;
1603 subattrs = ATTRVAL(attr) + 4;
1604 if (!attrvalidate(subattrs, sublen) ||
1605 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
1606 server->requests + i, server->conf->secret, from->conf->secret) ||
1607 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
1608 server->requests + i, server->conf->secret, from->conf->secret))
1612 pthread_mutex_unlock(&server->newrq_mutex);
1614 debug(DBG_WARN, "clientrd: MS attribute handling failed, ignoring packet");
1618 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject) {
1619 attr = attrget(server->requests[i].buf + 20, RADLEN(server->requests[i].buf) - 20, RAD_Attr_User_Name);
1620 /* we know the attribute exists */
1621 memcpy(tmp, ATTRVAL(attr), ATTRVALLEN(attr));
1622 tmp[ATTRVALLEN(attr)] = '\0';
1624 case RAD_Access_Accept:
1625 debug(DBG_INFO, "Access Accept for %s from %s", tmp, server->conf->host);
1627 case RAD_Access_Reject:
1628 debug(DBG_INFO, "Access Reject for %s from %s", tmp, server->conf->host);
1633 /* once we set received = 1, requests[i] may be reused */
1634 buf[1] = (char)server->requests[i].origid;
1635 memcpy(buf + 4, server->requests[i].origauth, 16);
1637 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
1641 if (!createmessageauth(buf, ATTRVAL(messageauth), from->conf->secret)) {
1642 pthread_mutex_unlock(&server->newrq_mutex);
1646 debug(DBG_DBG, "clientrd: computed messageauthattr");
1649 if (from->conf->type == 'U')
1650 fromsa = server->requests[i].fromsa;
1651 server->requests[i].received = 1;
1652 pthread_mutex_unlock(&server->newrq_mutex);
1654 debug(DBG_DBG, "clientrd: giving packet back to where it came from");
1655 sendreply(from, buf, from->conf->type == 'U' ? &fromsa : NULL);
1659 void *clientwr(void *arg) {
1660 struct server *server = (struct server *)arg;
1662 pthread_t clientrdth;
1665 struct timeval now, lastsend;
1666 struct timespec timeout;
1667 struct request statsrvrq;
1668 unsigned char statsrvbuf[38];
1670 memset(&timeout, 0, sizeof(struct timespec));
1672 if (server->conf->statusserver) {
1673 memset(&statsrvrq, 0, sizeof(struct request));
1674 memset(statsrvbuf, 0, sizeof(statsrvbuf));
1675 statsrvbuf[0] = RAD_Status_Server;
1677 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
1678 statsrvbuf[21] = 18;
1679 gettimeofday(&lastsend, NULL);
1682 if (server->conf->type == 'U') {
1683 if ((server->sock = connecttoserver(server->conf->addrinfo)) < 0)
1684 debugx(1, DBG_ERR, "clientwr: connecttoserver failed");
1686 tlsconnect(server, NULL, "new client");
1688 server->connectionok = 1;
1690 if (pthread_create(&clientrdth, NULL, clientrd, (void *)server))
1691 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
1694 pthread_mutex_lock(&server->newrq_mutex);
1695 if (!server->newrq) {
1696 gettimeofday(&now, NULL);
1697 if (server->conf->statusserver) {
1698 /* random 0-7 seconds */
1699 RAND_bytes(&rnd, 1);
1701 if (!timeout.tv_sec || timeout.tv_sec - now.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
1702 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
1704 if (timeout.tv_sec) {
1705 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
1706 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
1709 debug(DBG_DBG, "clientwr: waiting for new request");
1710 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
1713 if (server->newrq) {
1714 debug(DBG_DBG, "clientwr: got new request");
1717 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
1718 pthread_mutex_unlock(&server->newrq_mutex);
1720 for (i = 0; i < MAX_REQUESTS; i++) {
1721 pthread_mutex_lock(&server->newrq_mutex);
1722 while (i < MAX_REQUESTS && !server->requests[i].buf)
1724 if (i == MAX_REQUESTS) {
1725 pthread_mutex_unlock(&server->newrq_mutex);
1728 rq = server->requests + i;
1731 debug(DBG_DBG, "clientwr: packet %d in queue is marked as received", i);
1733 debug(DBG_DBG, "clientwr: freeing received packet %d from queue", i);
1735 /* setting this to NULL means that it can be reused */
1738 pthread_mutex_unlock(&server->newrq_mutex);
1742 gettimeofday(&now, NULL);
1743 if (now.tv_sec < rq->expiry.tv_sec) {
1744 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
1745 timeout.tv_sec = rq->expiry.tv_sec;
1746 pthread_mutex_unlock(&server->newrq_mutex);
1750 if (rq->tries == (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
1751 ? 1 : REQUEST_RETRIES)) {
1752 debug(DBG_DBG, "clientwr: removing expired packet from queue");
1753 if (*rq->buf == RAD_Status_Server) {
1754 debug(DBG_WARN, "clientwr: no status server response, %s dead?", server->conf->host);
1755 if (server->loststatsrv < 255)
1756 server->loststatsrv++;
1759 /* setting this to NULL means that it can be reused */
1761 pthread_mutex_unlock(&server->newrq_mutex);
1764 pthread_mutex_unlock(&server->newrq_mutex);
1766 rq->expiry.tv_sec = now.tv_sec +
1767 (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
1768 ? REQUEST_EXPIRY : REQUEST_EXPIRY / REQUEST_RETRIES);
1769 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
1770 timeout.tv_sec = rq->expiry.tv_sec;
1772 clientradput(server, server->requests[i].buf);
1773 gettimeofday(&lastsend, NULL);
1775 if (server->conf->statusserver) {
1776 gettimeofday(&now, NULL);
1777 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
1778 if (!RAND_bytes(statsrvbuf + 4, 16)) {
1779 debug(DBG_WARN, "clientwr: failed to generate random auth");
1782 statsrvrq.buf = malloc(sizeof(statsrvbuf));
1783 if (!statsrvrq.buf) {
1784 debug(DBG_ERR, "clientwr: malloc failed");
1787 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
1788 debug(DBG_DBG, "clientwr: sending status server to %s", server->conf->host);
1789 lastsend.tv_sec = now.tv_sec;
1790 sendrq(server, &statsrvrq);
1796 void *udpserverwr(void *arg) {
1797 struct replyq *replyq = udp_server_replyq;
1798 struct reply *reply;
1801 pthread_mutex_lock(&replyq->mutex);
1802 while (!(reply = (struct reply *)list_shift(replyq->replies))) {
1803 debug(DBG_DBG, "udp server writer, waiting for signal");
1804 pthread_cond_wait(&replyq->cond, &replyq->mutex);
1805 debug(DBG_DBG, "udp server writer, got signal");
1807 pthread_mutex_unlock(&replyq->mutex);
1809 if (sendto(udp_server_sock, reply->buf, RADLEN(reply->buf), 0,
1810 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
1811 debug(DBG_WARN, "sendudp: send failed");
1817 void *udpserverrd(void *arg) {
1819 pthread_t udpserverwrth;
1821 if ((udp_server_sock = bindtoaddr(udp_server_listen->addrinfo)) < 0)
1822 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
1824 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
1825 udp_server_listen->host ? udp_server_listen->host : "*", udp_server_listen->port);
1827 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
1828 debugx(1, DBG_ERR, "pthread_create failed");
1831 memset(&rq, 0, sizeof(struct request));
1832 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
1837 void *udpaccserverrd(void *arg) {
1840 if ((udp_accserver_sock = bindtoaddr(udp_accserver_listen->addrinfo)) < 0)
1841 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
1843 debug(DBG_WARN, "udpaccserverrd: listening for UDP on %s:%s",
1844 udp_accserver_listen->host ? udp_accserver_listen->host : "*", udp_accserver_listen->port);
1847 memset(&rq, 0, sizeof(struct request));
1848 rq.buf = radudpget(udp_accserver_sock, &rq.from, NULL, &rq.fromsa);
1849 if (*(uint8_t *)rq.buf == RAD_Accounting_Request) {
1853 debug(DBG_INFO, "udpaccserverrd: got something other than accounting-request, ignoring");
1858 void *tlsserverwr(void *arg) {
1860 unsigned long error;
1861 struct client *client = (struct client *)arg;
1862 struct replyq *replyq;
1863 struct reply *reply;
1865 debug(DBG_DBG, "tlsserverwr starting for %s", client->conf->host);
1866 replyq = client->replyq;
1868 pthread_mutex_lock(&replyq->mutex);
1869 while (!list_first(replyq->replies)) {
1871 debug(DBG_DBG, "tls server writer, waiting for signal");
1872 pthread_cond_wait(&replyq->cond, &replyq->mutex);
1873 debug(DBG_DBG, "tls server writer, got signal");
1876 /* ssl might have changed while waiting */
1877 pthread_mutex_unlock(&replyq->mutex);
1878 debug(DBG_DBG, "tlsserverwr: exiting as requested");
1882 reply = (struct reply *)list_shift(replyq->replies);
1883 pthread_mutex_unlock(&replyq->mutex);
1884 cnt = SSL_write(client->ssl, reply->buf, RADLEN(reply->buf));
1886 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
1887 cnt, RADLEN(reply->buf));
1889 while ((error = ERR_get_error()))
1890 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
1896 void *tlsserverrd(void *arg) {
1898 unsigned long error;
1900 struct client *client = (struct client *)arg;
1901 pthread_t tlsserverwrth;
1904 debug(DBG_DBG, "tlsserverrd starting for %s", client->conf->host);
1907 if (SSL_accept(ssl) <= 0) {
1908 while ((error = ERR_get_error()))
1909 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
1910 debug(DBG_ERR, "SSL_accept failed");
1913 if (tlsverifycert(client->ssl, client->conf)) {
1914 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
1915 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
1919 memset(&rq, 0, sizeof(struct request));
1920 rq.buf = radtlsget(client->ssl);
1923 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->conf->host);
1927 debug(DBG_ERR, "tlsserverrd: connection lost");
1928 /* stop writer by setting ssl to NULL and give signal in case waiting for data */
1930 pthread_mutex_lock(&client->replyq->mutex);
1931 pthread_cond_signal(&client->replyq->cond);
1932 pthread_mutex_unlock(&client->replyq->mutex);
1933 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
1934 pthread_join(tlsserverwrth, NULL);
1938 s = SSL_get_fd(ssl);
1940 shutdown(s, SHUT_RDWR);
1942 debug(DBG_DBG, "tlsserverrd thread for %s exiting", client->conf->host);
1943 removeclient(client);
1948 pthread_t tlsserverth;
1950 struct sockaddr_storage from;
1951 size_t fromlen = sizeof(from);
1952 struct clsrvconf *conf;
1953 struct client *client;
1955 if ((s = bindtoaddr(tcp_server_listen->addrinfo)) < 0)
1956 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
1959 debug(DBG_WARN, "listening for incoming TCP on %s:%s",
1960 tcp_server_listen->host ? tcp_server_listen->host : "*", tcp_server_listen->port);
1963 snew = accept(s, (struct sockaddr *)&from, &fromlen);
1965 debug(DBG_WARN, "accept failed");
1968 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
1970 conf = find_conf('T', (struct sockaddr *)&from, clconfs, NULL);
1972 debug(DBG_WARN, "ignoring request, not a known TLS client");
1973 shutdown(snew, SHUT_RDWR);
1978 client = addclient(conf);
1981 debug(DBG_WARN, "Failed to create new client instance");
1982 shutdown(snew, SHUT_RDWR);
1986 client->ssl = SSL_new(client->conf->ssl_ctx);
1987 SSL_set_fd(client->ssl, snew);
1988 if (pthread_create(&tlsserverth, NULL, tlsserverrd, (void *)client)) {
1989 debug(DBG_ERR, "tlslistener: pthread_create failed");
1990 SSL_free(client->ssl);
1991 removeclient(client);
1992 shutdown(snew, SHUT_RDWR);
1996 pthread_detach(tlsserverth);
2001 void tlsadd(char *value, char *cacertfile, char *cacertpath, char *certfile, char *certkeyfile, char *certkeypwd) {
2005 unsigned long error;
2007 if (!certfile || !certkeyfile)
2008 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified in TLS context %s", value);
2010 if (!cacertfile && !cacertpath)
2011 debugx(1, DBG_ERR, "CA Certificate file or path need to be specified in TLS context %s", value);
2014 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
2015 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
2016 for (i = 0; i < CRYPTO_num_locks(); i++) {
2017 ssl_lock_count[i] = 0;
2018 pthread_mutex_init(&ssl_locks[i], NULL);
2020 CRYPTO_set_id_callback(ssl_thread_id);
2021 CRYPTO_set_locking_callback(ssl_locking_callback);
2023 SSL_load_error_strings();
2026 while (!RAND_status()) {
2027 time_t t = time(NULL);
2028 pid_t pid = getpid();
2029 RAND_seed((unsigned char *)&t, sizeof(time_t));
2030 RAND_seed((unsigned char *)&pid, sizeof(pid));
2033 ctx = SSL_CTX_new(TLSv1_method());
2035 SSL_CTX_set_default_passwd_cb_userdata(ctx, certkeypwd);
2036 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
2038 if (!SSL_CTX_use_certificate_chain_file(ctx, certfile) ||
2039 !SSL_CTX_use_PrivateKey_file(ctx, certkeyfile, SSL_FILETYPE_PEM) ||
2040 !SSL_CTX_check_private_key(ctx) ||
2041 !SSL_CTX_load_verify_locations(ctx, cacertfile, cacertpath)) {
2042 while ((error = ERR_get_error()))
2043 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2044 debugx(1, DBG_ERR, "Error initialising SSL/TLS in TLS context %s", value);
2047 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
2048 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
2050 new = malloc(sizeof(struct tls));
2051 if (!new || !list_push(tlsconfs, new))
2052 debugx(1, DBG_ERR, "malloc failed");
2054 memset(new, 0, sizeof(struct tls));
2055 new->name = stringcopy(value, 0);
2057 debugx(1, DBG_ERR, "malloc failed");
2060 debug(DBG_DBG, "tlsadd: added TLS context %s", value);
2064 struct list_node *entry;
2067 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2068 t = (struct tls *)entry->data;
2072 SSL_CTX_free(t->ctx);
2074 list_destroy(tlsconfs);
2078 SSL_CTX *tlsgetctx(char *alt1, char *alt2) {
2079 struct list_node *entry;
2080 struct tls *t, *t1 = NULL, *t2 = NULL;
2082 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2083 t = (struct tls *)entry->data;
2084 if (!strcasecmp(t->name, alt1)) {
2088 if (!t2 && alt2 && !strcasecmp(t->name, alt2))
2099 void addrealm(char *value, char **servers, char *message) {
2101 struct realm *realm;
2102 char *s, *regex = NULL;
2103 struct list_node *entry;
2104 struct clsrvconf *conf;
2106 if (*value == '/') {
2107 /* regexp, remove optional trailing / if present */
2108 if (value[strlen(value) - 1] == '/')
2109 value[strlen(value) - 1] = '\0';
2111 /* not a regexp, let us make it one */
2112 if (*value == '*' && !value[1])
2113 regex = stringcopy(".*", 0);
2115 for (n = 0, s = value; *s;)
2118 regex = malloc(strlen(value) + n + 3);
2121 for (n = 1, s = value; *s; s++) {
2131 debugx(1, DBG_ERR, "malloc failed");
2132 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2135 realm = malloc(sizeof(struct realm));
2137 debugx(1, DBG_ERR, "malloc failed");
2139 memset(realm, 0, sizeof(struct realm));
2140 realm->name = stringcopy(value, 0);
2142 debugx(1, DBG_ERR, "malloc failed");
2143 if (message && strlen(message) > 253)
2144 debugx(1, DBG_ERR, "ReplyMessage can be at most 253 bytes");
2145 realm->message = message;
2147 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_ICASE | REG_NOSUB))
2148 debugx(1, DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2152 if (servers && *servers) {
2153 realm->srvconfs = list_create();
2154 if (!realm->srvconfs)
2155 debugx(1, DBG_ERR, "malloc failed");
2156 for (n = 0; servers[n]; n++) {
2157 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2158 conf = (struct clsrvconf *)entry->data;
2159 if (!strcasecmp(servers[n], conf->name))
2163 debugx(1, DBG_ERR, "addrealm failed, no server %s", servers[n]);
2164 if (!list_push(realm->srvconfs, conf))
2165 debugx(1, DBG_ERR, "malloc failed");
2166 debug(DBG_DBG, "addrealm: added server %s for realm %s", conf->name, value);
2169 realm->srvconfs = NULL;
2171 if (!list_push(realms, realm))
2172 debugx(1, DBG_ERR, "malloc failed");
2173 debug(DBG_DBG, "addrealm: added realm %s", value);
2176 char *parsehostport(char *s, struct clsrvconf *conf) {
2181 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
2185 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
2187 debugx(1, DBG_ERR, "no ] matching initial [");
2191 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
2194 debugx(1, DBG_ERR, "missing host/address");
2196 conf->host = stringcopy(field, p - field);
2199 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
2200 debugx(1, DBG_ERR, "unexpected character after ]");
2203 /* port number or service name is specified */;
2205 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
2207 debugx(1, DBG_ERR, "syntax error, : but no following port");
2208 conf->port = stringcopy(field, p - field);
2210 conf->port = stringcopy(conf->type == 'U' ? DEFAULT_UDP_PORT : DEFAULT_TLS_PORT, 0);
2214 FILE *openconfigfile(const char *filename) {
2216 char pathname[100], *base = NULL;
2218 f = fopen(filename, "r");
2220 debug(DBG_DBG, "reading config file %s", filename);
2224 if (strlen(filename) + 1 <= sizeof(pathname)) {
2225 /* basename() might modify the string */
2226 strcpy(pathname, filename);
2227 base = basename(pathname);
2228 f = fopen(base, "r");
2232 debugx(1, DBG_ERR, "could not read config file %s nor %s\n%s", filename, base, strerror(errno));
2234 debug(DBG_DBG, "reading config file %s", base);
2238 struct clsrvconf *server_create(char type, char *lconf) {
2239 struct clsrvconf *conf;
2241 conf = malloc(sizeof(struct clsrvconf));
2243 debugx(1, DBG_ERR, "malloc failed");
2244 memset(conf, 0, sizeof(struct clsrvconf));
2247 parsehostport(lconf, conf);
2248 if (!strcmp(conf->host, "*")) {
2253 conf->port = stringcopy(type == 'T' ? DEFAULT_TLS_PORT : DEFAULT_UDP_PORT, 0);
2254 if (!resolvepeer(conf, AI_PASSIVE))
2255 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host, conf->port);
2259 /* returns NULL on error, where to continue parsing if token and ok. E.g. "" will return token with empty string */
2260 char *strtokenquote(char *s, char **token, char *del, char *quote, char *comment) {
2261 char *t = s, *q, *r;
2263 if (!t || !token || !del)
2265 while (*t && strchr(del, *t))
2267 if (!*t || (comment && strchr(comment, *t))) {
2269 return t + 1; /* needs to be non-NULL, but value doesn't matter */
2271 if (quote && (q = strchr(quote, *t))) {
2274 while (*t && *t != *q)
2276 if (!*t || (t[1] && !strchr(del, t[1])))
2284 while (*t && !strchr(del, *t))
2290 /* Parses config with following syntax:
2293 * option-name = value
2295 * option-name value {
2296 * option-name [=] value
2300 void getgeneralconfig(FILE *f, char *block, ...) {
2303 /* initialise lots of stuff to avoid stupid compiler warnings */
2304 char *tokens[3], *s, *opt = NULL, *val = NULL, *word, *optval, **str = NULL, ***mstr = NULL;
2305 int type = 0, tcount, conftype = 0, n;
2306 void (*cbk)(FILE *, char *, char *, char *) = NULL;
2308 while (fgets(line, 1024, f)) {
2310 for (tcount = 0; tcount < 3; tcount++) {
2311 s = strtokenquote(s, &tokens[tcount], " \t\n", "\"'", tcount ? NULL : "#");
2313 debugx(1, DBG_ERR, "Syntax error in line starting with: %s", line);
2314 if (!tokens[tcount])
2317 if (!tcount || **tokens == '#')
2320 if (**tokens == '}') {
2323 debugx(1, DBG_ERR, "configuration error, found } with no matching {");
2330 conftype = CONF_STR;
2333 if (tokens[1][0] == '=' && tokens[1][1] == '\0') {
2336 conftype = CONF_STR;
2339 if (tokens[2][0] == '{' && tokens[2][1] == '\0') {
2342 conftype = CONF_CBK;
2348 debugx(1, DBG_ERR, "configuration error in block %s, line starting with %s", block, tokens[0]);
2349 debugx(1, DBG_ERR, "configuration error, syntax error in line starting with %s", tokens[0]);
2353 debugx(1, DBG_ERR, "configuration error, option %s needs a non-empty value", opt);
2355 va_start(ap, block);
2356 while ((word = va_arg(ap, char *))) {
2357 type = va_arg(ap, int);
2360 str = va_arg(ap, char **);
2362 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2365 mstr = va_arg(ap, char ***);
2367 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2370 cbk = va_arg(ap, void (*)(FILE *, char *, char *, char *));
2373 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2375 if (!strcasecmp(opt, word))
2382 debugx(1, DBG_ERR, "configuration error in block %s, unknown option %s", block, opt);
2383 debugx(1, DBG_ERR, "configuration error, unknown option %s", opt);
2386 if (((type == CONF_STR || type == CONF_MSTR) && conftype != CONF_STR) ||
2387 (type == CONF_CBK && conftype != CONF_CBK)) {
2389 debugx(1, DBG_ERR, "configuration error in block %s, wrong syntax for option %s", block, opt);
2390 debugx(1, DBG_ERR, "configuration error, wrong syntax for option %s", opt);
2396 debug(DBG_DBG, "getgeneralconfig: block %s: %s = %s", block, opt, val);
2398 debug(DBG_DBG, "getgeneralconfig: %s = %s", opt, val);
2399 *str = stringcopy(val, 0);
2401 debugx(1, DBG_ERR, "malloc failed");
2405 debug(DBG_DBG, "getgeneralconfig: block %s: %s = %s", block, opt, val);
2407 debug(DBG_DBG, "getgeneralconfig: %s = %s", opt, val);
2409 for (n = 0; (*mstr)[n]; n++);
2412 *mstr = realloc(*mstr, sizeof(char *) * (n + 2));
2414 debugx(1, DBG_ERR, "malloc failed");
2415 (*mstr)[n] = stringcopy(val, 0);
2416 (*mstr)[n + 1] = NULL;
2419 optval = malloc(strlen(opt) + strlen(val) + 2);
2421 debugx(1, DBG_ERR, "malloc failed");
2422 sprintf(optval, "%s %s", opt, val);
2423 cbk(f, optval, opt, val);
2427 debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
2432 int addmatchcertattr(struct clsrvconf *conf, char *matchcertattr) {
2435 v = matchcertattr + 20;
2436 if (strncasecmp(matchcertattr, "SubjectAltName:URI:/", 20) || !*v)
2438 /* regexp, remove optional trailing / if present */
2439 if (v[strlen(v) - 1] == '/')
2440 v[strlen(v) - 1] = '\0';
2444 conf->certuriregex = malloc(sizeof(regex_t));
2445 if (!conf->certuriregex) {
2446 debug(DBG_ERR, "malloc failed");
2449 if (regcomp(conf->certuriregex, v, REG_ICASE | REG_NOSUB)) {
2450 free(conf->certuriregex);
2451 conf->certuriregex = NULL;
2452 debug(DBG_ERR, "failed to compile regular expression %s", v);
2458 int addrewriteattr(struct clsrvconf *conf, char *rewriteattr) {
2461 v = rewriteattr + 11;
2462 if (strncasecmp(rewriteattr, "User-Name:/", 11) || !*v)
2464 /* regexp, remove optional trailing / if present */
2465 if (v[strlen(v) - 1] == '/')
2466 v[strlen(v) - 1] = '\0';
2473 conf->rewriteattrregex = malloc(sizeof(regex_t));
2474 if (!conf->rewriteattrregex) {
2475 debug(DBG_ERR, "malloc failed");
2479 conf->rewriteattrreplacement = stringcopy(w, 0);
2480 if (!conf->rewriteattrreplacement) {
2481 free(conf->rewriteattrregex);
2482 conf->rewriteattrregex = NULL;
2486 if (regcomp(conf->rewriteattrregex, v, REG_ICASE | REG_EXTENDED)) {
2487 free(conf->rewriteattrregex);
2488 conf->rewriteattrregex = NULL;
2489 free(conf->rewriteattrreplacement);
2490 conf->rewriteattrreplacement = NULL;
2491 debug(DBG_ERR, "failed to compile regular expression %s", v);
2498 void confclient_cb(FILE *f, char *block, char *opt, char *val) {
2499 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewriteattr = NULL;
2500 struct clsrvconf *conf;
2502 debug(DBG_DBG, "confclient_cb called for %s", block);
2504 conf = malloc(sizeof(struct clsrvconf));
2505 if (!conf || !list_push(clconfs, conf))
2506 debugx(1, DBG_ERR, "malloc failed");
2507 memset(conf, 0, sizeof(struct clsrvconf));
2509 getgeneralconfig(f, block,
2510 "type", CONF_STR, &type,
2511 "host", CONF_STR, &conf->host,
2512 "secret", CONF_STR, &conf->secret,
2513 "tls", CONF_STR, &tls,
2514 "matchcertificateattribute", CONF_STR, &matchcertattr,
2515 "rewriteattribute", CONF_STR, &rewriteattr,
2519 /* leave conf->name to be NULL for clients */
2521 conf->host = stringcopy(val, 0);
2523 if (type && !strcasecmp(type, "udp")) {
2526 } else if (type && !strcasecmp(type, "tls")) {
2527 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultclient", "default");
2529 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
2530 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
2531 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2535 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
2540 free(matchcertattr);
2543 if (!addrewriteattr(conf, rewriteattr))
2544 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
2548 if (!resolvepeer(conf, 0))
2549 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host, conf->port);
2551 if (!conf->secret) {
2552 if (conf->type == 'U')
2553 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
2554 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
2558 void confserver_cb(FILE *f, char *block, char *opt, char *val) {
2559 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *statusserver = NULL;
2560 struct clsrvconf *conf;
2562 debug(DBG_DBG, "confserver_cb called for %s", block);
2564 conf = malloc(sizeof(struct clsrvconf));
2565 if (!conf || !list_push(srvconfs, conf))
2566 debugx(1, DBG_ERR, "malloc failed");
2567 memset(conf, 0, sizeof(struct clsrvconf));
2569 getgeneralconfig(f, block,
2570 "type", CONF_STR, &type,
2571 "host", CONF_STR, &conf->host,
2572 "port", CONF_STR, &conf->port,
2573 "secret", CONF_STR, &conf->secret,
2574 "tls", CONF_STR, &tls,
2575 "matchcertificateattribute", CONF_STR, &matchcertattr,
2576 "StatusServer", CONF_STR, &statusserver,
2580 conf->name = stringcopy(val, 0);
2582 conf->host = stringcopy(val, 0);
2584 if (type && !strcasecmp(type, "udp")) {
2588 conf->port = stringcopy(DEFAULT_UDP_PORT, 0);
2589 } else if (type && !strcasecmp(type, "tls")) {
2590 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultserver", "default");
2592 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
2593 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
2594 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2596 conf->port = stringcopy(DEFAULT_TLS_PORT, 0);
2600 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
2605 free(matchcertattr);
2607 if (!resolvepeer(conf, 0))
2608 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host, conf->port);
2610 if (!conf->secret) {
2611 if (conf->type == 'U')
2612 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
2613 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
2617 if (!strcasecmp(statusserver, "on"))
2618 conf->statusserver = 1;
2619 else if (strcasecmp(statusserver, "off"))
2620 debugx(1, DBG_ERR, "error in block %s, StatusServer is %s, must be on or off", block, statusserver);
2625 void confrealm_cb(FILE *f, char *block, char *opt, char *val) {
2626 char **servers = NULL, *msg = NULL;
2628 debug(DBG_DBG, "confrealm_cb called for %s", block);
2630 getgeneralconfig(f, block,
2631 "server", CONF_MSTR, &servers,
2632 "ReplyMessage", CONF_STR, &msg,
2636 addrealm(val, servers, msg);
2640 void conftls_cb(FILE *f, char *block, char *opt, char *val) {
2641 char *cacertfile = NULL, *cacertpath = NULL, *certfile = NULL, *certkeyfile = NULL, *certkeypwd = NULL;
2643 debug(DBG_DBG, "conftls_cb called for %s", block);
2645 getgeneralconfig(f, block,
2646 "CACertificateFile", CONF_STR, &cacertfile,
2647 "CACertificatePath", CONF_STR, &cacertpath,
2648 "CertificateFile", CONF_STR, &certfile,
2649 "CertificateKeyFile", CONF_STR, &certkeyfile,
2650 "CertificateKeyPassword", CONF_STR, &certkeypwd,
2654 tlsadd(val, cacertfile, cacertpath, certfile, certkeyfile, certkeypwd);
2662 void getmainconfig(const char *configfile) {
2664 char *loglevel = NULL;
2666 f = openconfigfile(configfile);
2667 memset(&options, 0, sizeof(options));
2669 clconfs = list_create();
2671 debugx(1, DBG_ERR, "malloc failed");
2673 srvconfs = list_create();
2675 debugx(1, DBG_ERR, "malloc failed");
2677 realms = list_create();
2679 debugx(1, DBG_ERR, "malloc failed");
2681 tlsconfs = list_create();
2683 debugx(1, DBG_ERR, "malloc failed");
2685 getgeneralconfig(f, NULL,
2686 "ListenUDP", CONF_STR, &options.listenudp,
2687 "ListenTCP", CONF_STR, &options.listentcp,
2688 "ListenAccountingUDP", CONF_STR, &options.listenaccudp,
2689 "LogLevel", CONF_STR, &loglevel,
2690 "LogDestination", CONF_STR, &options.logdestination,
2691 "Client", CONF_CBK, confclient_cb,
2692 "Server", CONF_CBK, confserver_cb,
2693 "Realm", CONF_CBK, confrealm_cb,
2694 "TLS", CONF_CBK, conftls_cb,
2701 if (strlen(loglevel) != 1 || *loglevel < '1' || *loglevel > '4')
2702 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %s, must be 1, 2, 3 or 4", configfile, loglevel);
2703 options.loglevel = *loglevel - '0';
2708 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *loglevel, char **configfile) {
2711 while ((c = getopt(argc, argv, "c:d:fv")) != -1) {
2714 *configfile = optarg;
2717 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
2718 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
2719 *loglevel = *optarg - '0';
2725 debugx(0, DBG_ERR, "radsecproxy revision $Rev$");
2730 if (!(argc - optind))
2734 debug(DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -v ]", argv[0]);
2738 int main(int argc, char **argv) {
2739 pthread_t udpserverth, udpaccserverth;
2740 struct list_node *entry;
2741 uint8_t foreground = 0, loglevel = 0;
2742 char *configfile = NULL;
2744 debug_init("radsecproxy");
2745 debug_set_level(DEBUG_LEVEL);
2746 getargs(argc, argv, &foreground, &loglevel, &configfile);
2748 debug_set_level(loglevel);
2749 getmainconfig(configfile ? configfile : CONFIG_MAIN);
2751 options.loglevel = loglevel;
2752 else if (options.loglevel)
2753 debug_set_level(options.loglevel);
2755 options.logdestination = NULL;
2757 if (!options.logdestination)
2758 options.logdestination = "x-syslog:///";
2759 debug_set_destination(options.logdestination);
2762 if (!list_first(clconfs))
2763 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
2764 if (!list_first(srvconfs))
2765 debugx(1, DBG_ERR, "No servers configured, nothing to do, exiting");
2766 if (!list_first(realms))
2767 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
2769 if (!foreground && (daemon(0, 0) < 0))
2770 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
2772 debug(DBG_INFO, "radsecproxy revision $Rev$ starting");
2774 if (client_udp_count) {
2775 udp_server_listen = server_create('U', options.listenudp);
2776 udp_server_replyq = newreplyq();
2777 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
2778 debugx(1, DBG_ERR, "pthread_create failed");
2779 if (options.listenaccudp) {
2780 udp_accserver_listen = server_create('U', options.listenaccudp);
2781 if (pthread_create(&udpaccserverth, NULL, udpaccserverrd, NULL))
2782 debugx(1, DBG_ERR, "pthread_create failed");
2786 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2787 addserver((struct clsrvconf *)entry->data);
2788 if (pthread_create(&((struct clsrvconf *)entry->data)->servers->clientth, NULL, clientwr,
2789 (void *)((struct clsrvconf *)entry->data)->servers))
2790 debugx(1, DBG_ERR, "pthread_create failed");
2793 if (client_tls_count) {
2794 tcp_server_listen = server_create('T', options.listentcp);
2795 return tlslistener();
2798 /* just hang around doing nothing, anything to do here? */