2 * Copyright (C) 2006-2008 Stig Venaas <venaas@uninett.no>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
9 /* For UDP there is one server instance consisting of udpserverrd and udpserverth
10 * rd is responsible for init and launching wr
11 * For TLS there is a server instance that launches tlsserverrd for each TLS peer
12 * each tlsserverrd launches tlsserverwr
13 * For each UDP/TLS peer there is clientrd and clientwr, clientwr is responsible
14 * for init and launching rd
16 * serverrd will receive a request, processes it and puts it in the requestq of
17 * the appropriate clientwr
18 * clientwr monitors its requestq and sends requests
19 * clientrd looks for responses, processes them and puts them in the replyq of
20 * the peer the request came from
21 * serverwr monitors its reply and sends replies
23 * In addition to the main thread, we have:
24 * If UDP peers are configured, there will be 2 + 2 * #peers UDP threads
25 * If TLS peers are configured, there will initially be 2 * #peers TLS threads
26 * For each TLS peer connecting to us there will be 2 more TLS threads
27 * This is only for connected peers
28 * Example: With 3 UDP peer and 30 TLS peers, there will be a max of
29 * 1 + (2 + 2 * 3) + (2 * 30) + (2 * 30) = 129 threads
33 #include <sys/socket.h>
34 #include <netinet/in.h>
43 #include <sys/types.h>
44 #include <arpa/inet.h>
48 #include <openssl/ssl.h>
49 #include <openssl/rand.h>
50 #include <openssl/err.h>
51 #include <openssl/md5.h>
52 #include <openssl/hmac.h>
53 #include <openssl/x509v3.h>
58 #include "radsecproxy.h"
60 static struct options options;
61 struct list *clconfs, *srvconfs, *realms, *tlsconfs, *rewriteconfs;
63 static int client_udp_count = 0;
64 static int client_tls_count = 0;
65 static int server_udp_count = 0;
66 static int server_tls_count = 0;
68 static struct addrinfo *srcudpres = NULL;
69 static struct addrinfo *srctcpres = NULL;
71 static struct replyq *udp_server_replyq = NULL;
72 static int udp_server_sock = -1;
73 static int udp_accserver_sock = -1;
74 static int udp_client4_sock = -1;
75 static int udp_client6_sock = -1;
76 static pthread_mutex_t *ssl_locks;
77 static long *ssl_lock_count;
81 /* callbacks for making OpenSSL thread safe */
82 unsigned long ssl_thread_id() {
83 return (unsigned long)pthread_self();
86 void ssl_locking_callback(int mode, int type, const char *file, int line) {
87 if (mode & CRYPTO_LOCK) {
88 pthread_mutex_lock(&ssl_locks[type]);
89 ssl_lock_count[type]++;
91 pthread_mutex_unlock(&ssl_locks[type]);
94 static int pem_passwd_cb(char *buf, int size, int rwflag, void *userdata) {
95 int pwdlen = strlen(userdata);
96 if (rwflag != 0 || pwdlen > size) /* not for decryption or too large */
98 memcpy(buf, userdata, pwdlen);
102 static int verify_cb(int ok, X509_STORE_CTX *ctx) {
107 err_cert = X509_STORE_CTX_get_current_cert(ctx);
108 err = X509_STORE_CTX_get_error(ctx);
109 depth = X509_STORE_CTX_get_error_depth(ctx);
111 if (depth > MAX_CERT_DEPTH) {
113 err = X509_V_ERR_CERT_CHAIN_TOO_LONG;
114 X509_STORE_CTX_set_error(ctx, err);
118 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, 256);
119 debug(DBG_WARN, "verify error: num=%d:%s:depth=%d:%s", err, X509_verify_cert_error_string(err), depth, buf);
122 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
123 X509_NAME_oneline(X509_get_issuer_name(ctx->current_cert), buf, 256);
124 debug(DBG_WARN, "\tIssuer=%s", buf);
126 case X509_V_ERR_CERT_NOT_YET_VALID:
127 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
128 debug(DBG_WARN, "\tCertificate not yet valid");
130 case X509_V_ERR_CERT_HAS_EXPIRED:
131 debug(DBG_WARN, "Certificate has expired");
133 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
134 debug(DBG_WARN, "Certificate no longer valid (after notAfter)");
139 printf("certificate verify returns %d\n", ok);
144 int resolvepeer(struct clsrvconf *conf, int ai_flags) {
145 struct addrinfo hints, *addrinfo, *res;
149 slash = conf->host ? strchr(conf->host, '/') : NULL;
153 debug(DBG_WARN, "resolvepeer: prefix length must be specified after the / in %s", conf->host);
157 if (*s < '0' || *s > '9') {
158 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
161 plen = atoi(slash + 1);
162 if (plen < 0 || plen > 128) {
163 debug(DBG_WARN, "resolvepeer: %s in %s is not a valid prefix length", slash + 1, conf->host);
168 memset(&hints, 0, sizeof(hints));
169 hints.ai_socktype = (conf->type == 'T' ? SOCK_STREAM : SOCK_DGRAM);
170 hints.ai_family = AF_UNSPEC;
171 hints.ai_flags = ai_flags;
172 if (!conf->host && !conf->port) {
173 /* getaddrinfo() doesn't like host and port to be NULL */
174 if (getaddrinfo(conf->host, DEFAULT_UDP_PORT, &hints, &addrinfo)) {
175 debug(DBG_WARN, "resolvepeer: can't resolve (null) port (null)");
178 for (res = addrinfo; res; res = res->ai_next) {
179 switch (res->ai_family) {
181 ((struct sockaddr_in *)res->ai_addr)->sin_port = 0;
184 ((struct sockaddr_in6 *)res->ai_addr)->sin6_port = 0;
190 hints.ai_flags |= AI_NUMERICHOST;
191 if (getaddrinfo(conf->host, conf->port, &hints, &addrinfo)) {
192 debug(DBG_WARN, "resolvepeer: can't resolve %s port %s", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
197 switch (addrinfo->ai_family) {
200 debug(DBG_WARN, "resolvepeer: prefix length must be <= 32 in %s", conf->host);
201 freeaddrinfo(addrinfo);
208 debug(DBG_WARN, "resolvepeer: prefix must be IPv4 or IPv6 in %s", conf->host);
209 freeaddrinfo(addrinfo);
212 conf->prefixlen = plen;
214 conf->prefixlen = 255;
217 freeaddrinfo(conf->addrinfo);
218 conf->addrinfo = addrinfo;
222 int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only) {
224 struct addrinfo *res;
226 for (res = addrinfo; res; res = res->ai_next) {
227 if (family != AF_UNSPEC && family != res->ai_family)
229 s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
231 debug(DBG_WARN, "bindtoaddr: socket failed");
235 setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
238 setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
241 if (!bind(s, res->ai_addr, res->ai_addrlen))
243 debug(DBG_WARN, "bindtoaddr: bind failed");
249 char *parsehostport(char *s, struct clsrvconf *conf, char *default_port) {
254 /* allow literal addresses and port, e.g. [2001:db8::1]:1812 */
258 for (; *p && *p != ']' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
260 debugx(1, DBG_ERR, "no ] matching initial [");
264 for (; *p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n'; p++);
267 debugx(1, DBG_ERR, "missing host/address");
269 conf->host = stringcopy(field, p - field);
272 if (*p && *p != ':' && *p != ' ' && *p != '\t' && *p != '\n')
273 debugx(1, DBG_ERR, "unexpected character after ]");
276 /* port number or service name is specified */;
278 for (; *p && *p != ' ' && *p != '\t' && *p != '\n'; p++);
280 debugx(1, DBG_ERR, "syntax error, : but no following port");
281 conf->port = stringcopy(field, p - field);
283 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
287 struct clsrvconf *resolve_hostport(char type, char *lconf, char *default_port) {
288 struct clsrvconf *conf;
290 conf = malloc(sizeof(struct clsrvconf));
292 debugx(1, DBG_ERR, "malloc failed");
293 memset(conf, 0, sizeof(struct clsrvconf));
296 parsehostport(lconf, conf, default_port);
297 if (!strcmp(conf->host, "*")) {
302 conf->port = default_port ? stringcopy(default_port, 0) : NULL;
303 if (!resolvepeer(conf, AI_PASSIVE))
304 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
308 void freeclsrvres(struct clsrvconf *res) {
312 freeaddrinfo(res->addrinfo);
316 int connecttcp(struct addrinfo *addrinfo) {
318 struct addrinfo *res;
321 for (res = addrinfo; res; res = res->ai_next) {
322 s = bindtoaddr(srctcpres, res->ai_family, 1, 1);
324 debug(DBG_WARN, "connecttoserver: socket failed");
327 if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
329 debug(DBG_WARN, "connecttoserver: connect failed");
336 /* returns 1 if the len first bits are equal, else 0 */
337 int prefixmatch(void *a1, void *a2, uint8_t len) {
338 static uint8_t mask[] = { 0, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
340 if (l && memcmp(a1, a2, l))
345 return (((uint8_t *)a1)[l] & mask[r]) == (((uint8_t *)a2)[l] & mask[r]);
348 /* check if conf has matching address */
349 struct clsrvconf *checkconfaddr(char type, struct sockaddr *addr, struct clsrvconf *conf) {
350 struct sockaddr_in6 *sa6 = NULL;
351 struct in_addr *a4 = NULL;
352 struct addrinfo *res;
354 if (addr->sa_family == AF_INET6) {
355 sa6 = (struct sockaddr_in6 *)addr;
356 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
357 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
361 a4 = &((struct sockaddr_in *)addr)->sin_addr;
363 if (conf->type == type) {
364 if (conf->prefixlen == 255) {
365 for (res = conf->addrinfo; res; res = res->ai_next)
366 if ((a4 && res->ai_family == AF_INET &&
367 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
368 (sa6 && res->ai_family == AF_INET6 &&
369 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16)))
372 res = conf->addrinfo;
374 ((a4 && res->ai_family == AF_INET &&
375 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
376 (sa6 && res->ai_family == AF_INET6 &&
377 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen))))
384 /* returns next config with matching address, or NULL */
385 struct clsrvconf *find_conf(char type, struct sockaddr *addr, struct list *confs, struct list_node **cur) {
386 struct sockaddr_in6 *sa6 = NULL;
387 struct in_addr *a4 = NULL;
388 struct addrinfo *res;
389 struct list_node *entry;
390 struct clsrvconf *conf;
392 if (addr->sa_family == AF_INET6) {
393 sa6 = (struct sockaddr_in6 *)addr;
394 if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
395 a4 = (struct in_addr *)&sa6->sin6_addr.s6_addr[12];
399 a4 = &((struct sockaddr_in *)addr)->sin_addr;
401 for (entry = (cur && *cur ? list_next(*cur) : list_first(confs)); entry; entry = list_next(entry)) {
402 conf = (struct clsrvconf *)entry->data;
403 if (conf->type == type) {
404 if (conf->prefixlen == 255) {
405 for (res = conf->addrinfo; res; res = res->ai_next)
406 if ((a4 && res->ai_family == AF_INET &&
407 !memcmp(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, 4)) ||
408 (sa6 && res->ai_family == AF_INET6 &&
409 !memcmp(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, 16))) {
415 res = conf->addrinfo;
417 ((a4 && res->ai_family == AF_INET &&
418 prefixmatch(a4, &((struct sockaddr_in *)res->ai_addr)->sin_addr, conf->prefixlen)) ||
419 (sa6 && res->ai_family == AF_INET6 &&
420 prefixmatch(&sa6->sin6_addr, &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, conf->prefixlen)))) {
431 struct replyq *newreplyq() {
432 struct replyq *replyq;
434 replyq = malloc(sizeof(struct replyq));
436 debugx(1, DBG_ERR, "malloc failed");
437 replyq->replies = list_create();
438 if (!replyq->replies)
439 debugx(1, DBG_ERR, "malloc failed");
440 pthread_mutex_init(&replyq->mutex, NULL);
441 pthread_cond_init(&replyq->cond, NULL);
445 struct client *addclient(struct clsrvconf *conf) {
446 struct client *new = malloc(sizeof(struct client));
449 debug(DBG_ERR, "malloc failed");
452 if (!conf->clients) {
453 conf->clients = list_create();
454 if (!conf->clients) {
455 debug(DBG_ERR, "malloc failed");
460 memset(new, 0, sizeof(struct client));
462 new->replyq = conf->type == 'T' ? newreplyq() : udp_server_replyq;
464 list_push(conf->clients, new);
468 void removeclient(struct client *client) {
469 struct list_node *entry;
471 if (!client || !client->conf->clients)
474 pthread_mutex_lock(&client->replyq->mutex);
475 for (entry = list_first(client->replyq->replies); entry; entry = list_next(entry))
476 free(((struct reply *)entry)->buf);
477 list_destroy(client->replyq->replies);
478 pthread_cond_destroy(&client->replyq->cond);
479 pthread_mutex_unlock(&client->replyq->mutex);
480 pthread_mutex_destroy(&client->replyq->mutex);
481 list_removedata(client->conf->clients, client);
485 void removeclientrqs(struct client *client) {
486 struct list_node *entry;
487 struct server *server;
491 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
492 server = ((struct clsrvconf *)entry->data)->servers;
493 pthread_mutex_lock(&server->newrq_mutex);
494 for (i = 0; i < MAX_REQUESTS; i++) {
495 rq = server->requests + i;
496 if (rq->from == client)
499 pthread_mutex_unlock(&server->newrq_mutex);
503 void addserver(struct clsrvconf *conf) {
504 struct clsrvconf *res;
507 debugx(1, DBG_ERR, "addserver: currently works with just one server per conf");
509 conf->servers = malloc(sizeof(struct server));
511 debugx(1, DBG_ERR, "malloc failed");
512 memset(conf->servers, 0, sizeof(struct server));
513 conf->servers->conf = conf;
515 if (conf->type == 'U') {
517 res = resolve_hostport('U', options.sourceudp, NULL);
518 srcudpres = res->addrinfo;
519 res->addrinfo = NULL;
522 switch (conf->addrinfo->ai_family) {
524 if (udp_client4_sock < 0) {
525 udp_client4_sock = bindtoaddr(srcudpres, AF_INET, 0, 1);
526 if (udp_client4_sock < 0)
527 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
529 conf->servers->sock = udp_client4_sock;
532 if (udp_client6_sock < 0) {
533 udp_client6_sock = bindtoaddr(srcudpres, AF_INET6, 0, 1);
534 if (udp_client6_sock < 0)
535 debugx(1, DBG_ERR, "addserver: failed to create client socket for server %s", conf->host);
537 conf->servers->sock = udp_client6_sock;
540 debugx(1, DBG_ERR, "addserver: unsupported address family");
545 res = resolve_hostport('T', options.sourcetcp, NULL);
546 srctcpres = res->addrinfo;
547 res->addrinfo = NULL;
550 conf->servers->sock = -1;
553 pthread_mutex_init(&conf->servers->lock, NULL);
554 conf->servers->requests = calloc(MAX_REQUESTS, sizeof(struct request));
555 if (!conf->servers->requests)
556 debugx(1, DBG_ERR, "malloc failed");
557 conf->servers->newrq = 0;
558 pthread_mutex_init(&conf->servers->newrq_mutex, NULL);
559 pthread_cond_init(&conf->servers->newrq_cond, NULL);
562 /* exactly one of client and server must be non-NULL */
563 /* should probably take peer list (client(s) or server(s)) as argument instead */
564 /* if *peer == NULL we return who we received from, else require it to be from peer */
565 /* return from in sa if not NULL */
566 unsigned char *radudpget(int s, struct client **client, struct server **server, struct sockaddr_storage *sa) {
568 unsigned char buf[65536], *rad;
569 struct sockaddr_storage from;
570 socklen_t fromlen = sizeof(from);
572 struct list_node *node;
575 cnt = recvfrom(s, buf, sizeof(buf), 0, (struct sockaddr *)&from, &fromlen);
577 debug(DBG_WARN, "radudpget: recv failed");
580 debug(DBG_DBG, "radudpget: got %d bytes from %s", cnt, addr2string((struct sockaddr *)&from, fromlen));
583 debug(DBG_WARN, "radudpget: packet too small");
589 debug(DBG_WARN, "radudpget: length too small");
594 debug(DBG_WARN, "radudpget: packet smaller than length field in radius header");
598 debug(DBG_DBG, "radudpget: packet was padded with %d bytes", cnt - len);
602 p = checkconfaddr('U', (struct sockaddr *)&from, (*client)->conf);
604 p = find_conf('U', (struct sockaddr *)&from, clconfs, NULL);
607 p = checkconfaddr('U', (struct sockaddr *)&from, (*server)->conf);
609 p = find_conf('U', (struct sockaddr *)&from, srvconfs, NULL);
612 debug(DBG_WARN, "radudpget: got packet from wrong or unknown UDP peer %s, ignoring", addr2string((struct sockaddr *)&from, fromlen));
618 debug(DBG_ERR, "radudpget: malloc failed");
622 if (client && !*client) {
623 node = list_first(p->clients);
624 *client = node ? (struct client *)node->data : addclient(p);
629 } else if (server && !*server)
630 *server = p->servers;
634 memcpy(rad, buf, len);
640 int subjectaltnameaddr(X509 *cert, int family, struct in6_addr *addr) {
641 int loc, i, l, n, r = 0;
644 STACK_OF(GENERAL_NAME) *alt;
647 debug(DBG_DBG, "subjectaltnameaddr");
649 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
653 ex = X509_get_ext(cert, loc);
654 alt = X509V3_EXT_d2i(ex);
658 n = sk_GENERAL_NAME_num(alt);
659 for (i = 0; i < n; i++) {
660 gn = sk_GENERAL_NAME_value(alt, i);
661 if (gn->type != GEN_IPADD)
664 v = (char *)ASN1_STRING_data(gn->d.ia5);
665 l = ASN1_STRING_length(gn->d.ia5);
666 if (((family == AF_INET && l == sizeof(struct in_addr)) || (family == AF_INET6 && l == sizeof(struct in6_addr)))
667 && !memcmp(v, &addr, l)) {
672 GENERAL_NAMES_free(alt);
676 int cnregexp(X509 *cert, char *exact, regex_t *regex) {
683 nm = X509_get_subject_name(cert);
686 loc = X509_NAME_get_index_by_NID(nm, NID_commonName, loc);
689 e = X509_NAME_get_entry(nm, loc);
690 t = X509_NAME_ENTRY_get_data(e);
691 v = (char *) ASN1_STRING_data(t);
692 l = ASN1_STRING_length(t);
696 if (l == strlen(exact) && !strncasecmp(exact, v, l))
699 s = stringcopy((char *)v, l);
701 debug(DBG_ERR, "malloc failed");
704 if (regexec(regex, s, 0, NULL, 0)) {
715 int subjectaltnameregexp(X509 *cert, int type, char *exact, regex_t *regex) {
716 int loc, i, l, n, r = 0;
719 STACK_OF(GENERAL_NAME) *alt;
722 debug(DBG_DBG, "subjectaltnameregexp");
724 loc = X509_get_ext_by_NID(cert, NID_subject_alt_name, -1);
728 ex = X509_get_ext(cert, loc);
729 alt = X509V3_EXT_d2i(ex);
733 n = sk_GENERAL_NAME_num(alt);
734 for (i = 0; i < n; i++) {
735 gn = sk_GENERAL_NAME_value(alt, i);
736 if (gn->type != type)
739 v = (char *)ASN1_STRING_data(gn->d.ia5);
740 l = ASN1_STRING_length(gn->d.ia5);
744 printfchars(NULL, gn->type == GEN_DNS ? "dns" : "uri", NULL, v, l);
747 if (memcmp(v, exact, l))
750 s = stringcopy((char *)v, l);
752 debug(DBG_ERR, "malloc failed");
755 if (regexec(regex, s, 0, NULL, 0)) {
764 GENERAL_NAMES_free(alt);
768 X509 *verifytlscert(SSL *ssl) {
772 if (SSL_get_verify_result(ssl) != X509_V_OK) {
773 debug(DBG_ERR, "verifytlscert: basic validation failed");
774 while ((error = ERR_get_error()))
775 debug(DBG_ERR, "verifytlscert: TLS: %s", ERR_error_string(error, NULL));
779 cert = SSL_get_peer_certificate(ssl);
781 debug(DBG_ERR, "verifytlscert: failed to obtain certificate");
785 int verifyconfcert(X509 *cert, struct clsrvconf *conf) {
787 uint8_t type = 0; /* 0 for DNS, AF_INET for IPv4, AF_INET6 for IPv6 */
788 struct in6_addr addr;
790 if (conf->certnamecheck && conf->prefixlen == 255) {
791 if (inet_pton(AF_INET, conf->host, &addr))
793 else if (inet_pton(AF_INET6, conf->host, &addr))
796 r = type ? subjectaltnameaddr(cert, type, &addr) : subjectaltnameregexp(cert, GEN_DNS, conf->host, NULL);
799 debug(DBG_WARN, "verifyconfcert: No subjectaltname matching %s %s", type ? "address" : "host", conf->host);
802 debug(DBG_DBG, "verifyconfcert: Found subjectaltname matching %s %s", type ? "address" : "host", conf->host);
804 if (!cnregexp(cert, conf->host, NULL)) {
805 debug(DBG_WARN, "verifyconfcert: cn not matching host %s", conf->host);
808 debug(DBG_DBG, "verifyconfcert: Found cn matching host %s", conf->host);
811 if (conf->certcnregex) {
812 if (cnregexp(cert, NULL, conf->certcnregex) < 1) {
813 debug(DBG_WARN, "verifyconfcert: CN not matching regex");
816 debug(DBG_DBG, "verifyconfcert: CN matching regex");
818 if (conf->certuriregex) {
819 if (subjectaltnameregexp(cert, GEN_URI, NULL, conf->certuriregex) < 1) {
820 debug(DBG_WARN, "verifyconfcert: subjectaltname URI not matching regex");
823 debug(DBG_DBG, "verifyconfcert: subjectaltname URI matching regex");
828 void tlsconnect(struct server *server, struct timeval *when, char *text) {
833 debug(DBG_DBG, "tlsconnect called from %s", text);
834 pthread_mutex_lock(&server->lock);
835 if (when && memcmp(&server->lastconnecttry, when, sizeof(struct timeval))) {
836 /* already reconnected, nothing to do */
837 debug(DBG_DBG, "tlsconnect(%s): seems already reconnected", text);
838 pthread_mutex_unlock(&server->lock);
842 debug(DBG_DBG, "tlsconnect %s", text);
845 gettimeofday(&now, NULL);
846 elapsed = now.tv_sec - server->lastconnecttry.tv_sec;
847 if (server->connectionok) {
848 server->connectionok = 0;
850 } else if (elapsed < 1)
852 else if (elapsed < 60) {
853 debug(DBG_INFO, "tlsconnect: sleeping %lds", elapsed);
855 } else if (elapsed < 100000) {
856 debug(DBG_INFO, "tlsconnect: sleeping %ds", 60);
859 server->lastconnecttry.tv_sec = now.tv_sec; /* no sleep at startup */
860 debug(DBG_WARN, "tlsconnect: trying to open TLS connection to %s port %s", server->conf->host, server->conf->port);
861 if (server->sock >= 0)
863 if ((server->sock = connecttcp(server->conf->addrinfo)) < 0) {
864 debug(DBG_ERR, "tlsconnect: connecttcp failed");
868 SSL_free(server->ssl);
869 server->ssl = SSL_new(server->conf->ssl_ctx);
870 SSL_set_fd(server->ssl, server->sock);
871 if (SSL_connect(server->ssl) <= 0)
873 cert = verifytlscert(server->ssl);
876 if (verifyconfcert(cert, server->conf)) {
882 debug(DBG_WARN, "tlsconnect: TLS connection to %s port %s up", server->conf->host, server->conf->port);
883 gettimeofday(&server->lastconnecttry, NULL);
884 pthread_mutex_unlock(&server->lock);
887 unsigned char *radtlsget(SSL *ssl) {
889 unsigned char buf[4], *rad;
892 for (total = 0; total < 4; total += cnt) {
893 cnt = SSL_read(ssl, buf + total, 4 - total);
895 debug(DBG_ERR, "radtlsget: connection lost");
896 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
897 /* remote end sent close_notify, send one back */
907 debug(DBG_ERR, "radtlsget: malloc failed");
912 for (; total < len; total += cnt) {
913 cnt = SSL_read(ssl, rad + total, len - total);
915 debug(DBG_ERR, "radtlsget: connection lost");
916 if (SSL_get_error(ssl, cnt) == SSL_ERROR_ZERO_RETURN) {
917 /* remote end sent close_notify, send one back */
929 debug(DBG_WARN, "radtlsget: packet smaller than minimum radius size");
932 debug(DBG_DBG, "radtlsget: got %d bytes", total);
936 int clientradputudp(struct server *server, unsigned char *rad) {
938 struct sockaddr_storage sa;
939 struct sockaddr *sap;
940 struct clsrvconf *conf = server->conf;
941 in_port_t *port = NULL;
945 if (*rad == RAD_Accounting_Request) {
946 sap = (struct sockaddr *)&sa;
947 memcpy(sap, conf->addrinfo->ai_addr, conf->addrinfo->ai_addrlen);
949 sap = conf->addrinfo->ai_addr;
951 switch (sap->sa_family) {
953 port = &((struct sockaddr_in *)sap)->sin_port;
956 port = &((struct sockaddr_in6 *)sap)->sin6_port;
962 if (*rad == RAD_Accounting_Request)
963 *port = htons(ntohs(*port) + 1);
965 if (sendto(server->sock, rad, len, 0, sap, conf->addrinfo->ai_addrlen) >= 0) {
966 debug(DBG_DBG, "clienradputudp: sent UDP of length %d to %s port %d", len, conf->host, ntohs(*port));
970 debug(DBG_WARN, "clientradputudp: send failed");
974 int clientradputtls(struct server *server, unsigned char *rad) {
978 struct timeval lastconnecttry;
979 struct clsrvconf *conf = server->conf;
982 lastconnecttry = server->lastconnecttry;
983 while ((cnt = SSL_write(server->ssl, rad, len)) <= 0) {
984 while ((error = ERR_get_error()))
985 debug(DBG_ERR, "clientradputtls: TLS: %s", ERR_error_string(error, NULL));
986 tlsconnect(server, &lastconnecttry, "clientradputtls");
987 lastconnecttry = server->lastconnecttry;
990 server->connectionok = 1;
991 debug(DBG_DBG, "clientradputtls: Sent %d bytes, Radius packet of length %d to TLS peer %s", cnt, len, conf->host);
995 int clientradput(struct server *server, unsigned char *rad) {
996 switch (server->conf->type) {
998 return clientradputudp(server, rad);
1000 return clientradputtls(server, rad);
1005 int radsign(unsigned char *rad, unsigned char *sec) {
1006 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1007 static unsigned char first = 1;
1008 static EVP_MD_CTX mdctx;
1009 unsigned int md_len;
1012 pthread_mutex_lock(&lock);
1014 EVP_MD_CTX_init(&mdctx);
1018 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1019 EVP_DigestUpdate(&mdctx, rad, RADLEN(rad)) &&
1020 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1021 EVP_DigestFinal_ex(&mdctx, rad + 4, &md_len) &&
1023 pthread_mutex_unlock(&lock);
1027 int validauth(unsigned char *rad, unsigned char *reqauth, unsigned char *sec) {
1028 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1029 static unsigned char first = 1;
1030 static EVP_MD_CTX mdctx;
1031 unsigned char hash[EVP_MAX_MD_SIZE];
1035 pthread_mutex_lock(&lock);
1037 EVP_MD_CTX_init(&mdctx);
1043 result = (EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) &&
1044 EVP_DigestUpdate(&mdctx, rad, 4) &&
1045 EVP_DigestUpdate(&mdctx, reqauth, 16) &&
1046 (len <= 20 || EVP_DigestUpdate(&mdctx, rad + 20, len - 20)) &&
1047 EVP_DigestUpdate(&mdctx, sec, strlen((char *)sec)) &&
1048 EVP_DigestFinal_ex(&mdctx, hash, &len) &&
1050 !memcmp(hash, rad + 4, 16));
1051 pthread_mutex_unlock(&lock);
1055 int checkmessageauth(unsigned char *rad, uint8_t *authattr, char *secret) {
1056 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1057 static unsigned char first = 1;
1058 static HMAC_CTX hmacctx;
1059 unsigned int md_len;
1060 uint8_t auth[16], hash[EVP_MAX_MD_SIZE];
1062 pthread_mutex_lock(&lock);
1064 HMAC_CTX_init(&hmacctx);
1068 memcpy(auth, authattr, 16);
1069 memset(authattr, 0, 16);
1071 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1072 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1073 HMAC_Final(&hmacctx, hash, &md_len);
1074 memcpy(authattr, auth, 16);
1076 debug(DBG_WARN, "message auth computation failed");
1077 pthread_mutex_unlock(&lock);
1081 if (memcmp(auth, hash, 16)) {
1082 debug(DBG_WARN, "message authenticator, wrong value");
1083 pthread_mutex_unlock(&lock);
1087 pthread_mutex_unlock(&lock);
1091 int createmessageauth(unsigned char *rad, unsigned char *authattrval, char *secret) {
1092 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1093 static unsigned char first = 1;
1094 static HMAC_CTX hmacctx;
1095 unsigned int md_len;
1100 pthread_mutex_lock(&lock);
1102 HMAC_CTX_init(&hmacctx);
1106 memset(authattrval, 0, 16);
1108 HMAC_Init_ex(&hmacctx, secret, strlen(secret), EVP_md5(), NULL);
1109 HMAC_Update(&hmacctx, rad, RADLEN(rad));
1110 HMAC_Final(&hmacctx, authattrval, &md_len);
1112 debug(DBG_WARN, "message auth computation failed");
1113 pthread_mutex_unlock(&lock);
1117 pthread_mutex_unlock(&lock);
1121 unsigned char *attrget(unsigned char *attrs, int length, uint8_t type) {
1122 while (length > 1) {
1123 if (ATTRTYPE(attrs) == type)
1125 length -= ATTRLEN(attrs);
1126 attrs += ATTRLEN(attrs);
1131 void freerqdata(struct request *rq) {
1132 if (rq->origusername)
1133 free(rq->origusername);
1138 void sendrq(struct server *to, struct request *rq) {
1142 pthread_mutex_lock(&to->newrq_mutex);
1143 /* might simplify if only try nextid, might be ok */
1144 for (i = to->nextid; i < MAX_REQUESTS; i++)
1145 if (!to->requests[i].buf)
1147 if (i == MAX_REQUESTS) {
1148 for (i = 0; i < to->nextid; i++)
1149 if (!to->requests[i].buf)
1151 if (i == to->nextid) {
1152 debug(DBG_WARN, "No room in queue, dropping request");
1154 pthread_mutex_unlock(&to->newrq_mutex);
1159 rq->buf[1] = (char)i;
1161 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Message_Authenticator);
1162 if (attr && !createmessageauth(rq->buf, ATTRVAL(attr), to->conf->secret)) {
1164 pthread_mutex_unlock(&to->newrq_mutex);
1168 debug(DBG_DBG, "sendrq: inserting packet with id %d in queue for %s", i, to->conf->host);
1169 to->requests[i] = *rq;
1174 debug(DBG_DBG, "signalling client writer");
1175 pthread_cond_signal(&to->newrq_cond);
1177 pthread_mutex_unlock(&to->newrq_mutex);
1180 void sendreply(struct client *to, unsigned char *buf, struct sockaddr_storage *tosa) {
1181 struct reply *reply;
1184 if (!radsign(buf, (unsigned char *)to->conf->secret)) {
1186 debug(DBG_WARN, "sendreply: failed to sign message");
1190 reply = malloc(sizeof(struct reply));
1193 debug(DBG_ERR, "sendreply: malloc failed");
1196 memset(reply, 0, sizeof(struct reply));
1199 reply->tosa = *tosa;
1201 pthread_mutex_lock(&to->replyq->mutex);
1203 first = list_first(to->replyq->replies) == NULL;
1205 if (!list_push(to->replyq->replies, reply)) {
1206 pthread_mutex_unlock(&to->replyq->mutex);
1209 debug(DBG_ERR, "sendreply: malloc failed");
1214 debug(DBG_DBG, "signalling server writer");
1215 pthread_cond_signal(&to->replyq->cond);
1217 pthread_mutex_unlock(&to->replyq->mutex);
1220 int pwdencrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1221 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1222 static unsigned char first = 1;
1223 static EVP_MD_CTX mdctx;
1224 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1225 unsigned int md_len;
1226 uint8_t i, offset = 0, out[128];
1228 pthread_mutex_lock(&lock);
1230 EVP_MD_CTX_init(&mdctx);
1236 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1237 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1238 !EVP_DigestUpdate(&mdctx, input, 16) ||
1239 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1241 pthread_mutex_unlock(&lock);
1244 for (i = 0; i < 16; i++)
1245 out[offset + i] = hash[i] ^ in[offset + i];
1246 input = out + offset - 16;
1251 memcpy(in, out, len);
1252 pthread_mutex_unlock(&lock);
1256 int pwddecrypt(uint8_t *in, uint8_t len, char *shared, uint8_t sharedlen, uint8_t *auth) {
1257 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1258 static unsigned char first = 1;
1259 static EVP_MD_CTX mdctx;
1260 unsigned char hash[EVP_MAX_MD_SIZE], *input;
1261 unsigned int md_len;
1262 uint8_t i, offset = 0, out[128];
1264 pthread_mutex_lock(&lock);
1266 EVP_MD_CTX_init(&mdctx);
1272 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1273 !EVP_DigestUpdate(&mdctx, (uint8_t *)shared, sharedlen) ||
1274 !EVP_DigestUpdate(&mdctx, input, 16) ||
1275 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1277 pthread_mutex_unlock(&lock);
1280 for (i = 0; i < 16; i++)
1281 out[offset + i] = hash[i] ^ in[offset + i];
1282 input = in + offset;
1287 memcpy(in, out, len);
1288 pthread_mutex_unlock(&lock);
1292 int msmppencrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1293 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1294 static unsigned char first = 1;
1295 static EVP_MD_CTX mdctx;
1296 unsigned char hash[EVP_MAX_MD_SIZE];
1297 unsigned int md_len;
1300 pthread_mutex_lock(&lock);
1302 EVP_MD_CTX_init(&mdctx);
1307 printfchars(NULL, "msppencrypt auth in", "%02x ", auth, 16);
1308 printfchars(NULL, "msppencrypt salt in", "%02x ", salt, 2);
1309 printfchars(NULL, "msppencrypt in", "%02x ", text, len);
1312 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1313 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1314 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1315 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1316 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1317 pthread_mutex_unlock(&lock);
1322 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1325 for (i = 0; i < 16; i++)
1328 for (offset = 16; offset < len; offset += 16) {
1330 printf("text + offset - 16 c(%d): ", offset / 16);
1331 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1333 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1334 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1335 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1336 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1338 pthread_mutex_unlock(&lock);
1342 printfchars(NULL, "msppencrypt hash", "%02x ", hash, 16);
1345 for (i = 0; i < 16; i++)
1346 text[offset + i] ^= hash[i];
1350 printfchars(NULL, "msppencrypt out", "%02x ", text, len);
1353 pthread_mutex_unlock(&lock);
1357 int msmppdecrypt(uint8_t *text, uint8_t len, uint8_t *shared, uint8_t sharedlen, uint8_t *auth, uint8_t *salt) {
1358 static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
1359 static unsigned char first = 1;
1360 static EVP_MD_CTX mdctx;
1361 unsigned char hash[EVP_MAX_MD_SIZE];
1362 unsigned int md_len;
1366 pthread_mutex_lock(&lock);
1368 EVP_MD_CTX_init(&mdctx);
1373 printfchars(NULL, "msppdecrypt auth in", "%02x ", auth, 16);
1374 printfchars(NULL, "msppdecrypt salt in", "%02x ", salt, 2);
1375 printfchars(NULL, "msppdecrypt in", "%02x ", text, len);
1378 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1379 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1380 !EVP_DigestUpdate(&mdctx, auth, 16) ||
1381 !EVP_DigestUpdate(&mdctx, salt, 2) ||
1382 !EVP_DigestFinal_ex(&mdctx, hash, &md_len)) {
1383 pthread_mutex_unlock(&lock);
1388 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1391 for (i = 0; i < 16; i++)
1392 plain[i] = text[i] ^ hash[i];
1394 for (offset = 16; offset < len; offset += 16) {
1396 printf("text + offset - 16 c(%d): ", offset / 16);
1397 printfchars(NULL, NULL, "%02x ", text + offset - 16, 16);
1399 if (!EVP_DigestInit_ex(&mdctx, EVP_md5(), NULL) ||
1400 !EVP_DigestUpdate(&mdctx, shared, sharedlen) ||
1401 !EVP_DigestUpdate(&mdctx, text + offset - 16, 16) ||
1402 !EVP_DigestFinal_ex(&mdctx, hash, &md_len) ||
1404 pthread_mutex_unlock(&lock);
1408 printfchars(NULL, "msppdecrypt hash", "%02x ", hash, 16);
1411 for (i = 0; i < 16; i++)
1412 plain[offset + i] = text[offset + i] ^ hash[i];
1415 memcpy(text, plain, len);
1417 printfchars(NULL, "msppdecrypt out", "%02x ", text, len);
1420 pthread_mutex_unlock(&lock);
1424 struct realm *id2realm(char *id, uint8_t len) {
1425 struct list_node *entry;
1426 struct realm *realm;
1428 for (entry = list_first(realms); entry; entry = list_next(entry)) {
1429 realm = (struct realm *)entry->data;
1430 if (!regexec(&realm->regex, id, 0, NULL, 0)) {
1431 debug(DBG_DBG, "found matching realm: %s", realm->name);
1438 int rqinqueue(struct server *to, struct client *from, uint8_t id, uint8_t code) {
1439 struct request *rq = to->requests, *end;
1441 pthread_mutex_lock(&to->newrq_mutex);
1442 for (end = rq + MAX_REQUESTS; rq < end; rq++)
1443 if (rq->buf && !rq->received && rq->origid == id && rq->from == from && *rq->buf == code)
1445 pthread_mutex_unlock(&to->newrq_mutex);
1450 int attrvalidate(unsigned char *attrs, int length) {
1451 while (length > 1) {
1452 if (ATTRLEN(attrs) < 2) {
1453 debug(DBG_WARN, "attrvalidate: invalid attribute length %d", ATTRLEN(attrs));
1456 length -= ATTRLEN(attrs);
1458 debug(DBG_WARN, "attrvalidate: attribute length %d exceeds packet length", ATTRLEN(attrs));
1461 attrs += ATTRLEN(attrs);
1464 debug(DBG_WARN, "attrvalidate: malformed packet? remaining byte after last attribute");
1468 int pwdrecrypt(uint8_t *pwd, uint8_t len, char *oldsecret, char *newsecret, uint8_t *oldauth, uint8_t *newauth) {
1469 if (len < 16 || len > 128 || len % 16) {
1470 debug(DBG_WARN, "pwdrecrypt: invalid password length");
1474 if (!pwddecrypt(pwd, len, oldsecret, strlen(oldsecret), oldauth)) {
1475 debug(DBG_WARN, "pwdrecrypt: cannot decrypt password");
1479 printfchars(NULL, "pwdrecrypt: password", "%02x ", pwd, len);
1481 if (!pwdencrypt(pwd, len, newsecret, strlen(newsecret), newauth)) {
1482 debug(DBG_WARN, "pwdrecrypt: cannot encrypt password");
1488 int msmpprecrypt(uint8_t *msmpp, uint8_t len, char *oldsecret, char *newsecret, unsigned char *oldauth, char *newauth) {
1491 if (!msmppdecrypt(msmpp + 2, len - 2, (unsigned char *)oldsecret, strlen(oldsecret), oldauth, msmpp)) {
1492 debug(DBG_WARN, "msmpprecrypt: failed to decrypt msppe key");
1495 if (!msmppencrypt(msmpp + 2, len - 2, (unsigned char *)newsecret, strlen(newsecret), (unsigned char *)newauth, msmpp)) {
1496 debug(DBG_WARN, "msmpprecrypt: failed to encrypt msppe key");
1502 int msmppe(unsigned char *attrs, int length, uint8_t type, char *attrtxt, struct request *rq,
1503 char *oldsecret, char *newsecret) {
1504 unsigned char *attr;
1506 for (attr = attrs; (attr = attrget(attr, length - (attr - attrs), type)); attr += ATTRLEN(attr)) {
1507 debug(DBG_DBG, "msmppe: Got %s", attrtxt);
1508 if (!msmpprecrypt(ATTRVAL(attr), ATTRVALLEN(attr), oldsecret, newsecret, rq->buf + 4, rq->origauth))
1514 int findvendorsubattr(uint32_t *attrs, uint32_t vendor, uint8_t subattr) {
1518 for (; attrs[0]; attrs += 2)
1519 if (attrs[0] == vendor && attrs[1] == subattr)
1524 int dovendorrewrite(uint8_t *attrs, uint16_t length, uint32_t *removevendorattrs) {
1525 uint8_t alen, sublen, rmlen = 0;
1526 uint32_t vendor = *(uint32_t *)ATTRVAL(attrs);
1529 if (!removevendorattrs)
1532 while (*removevendorattrs && *removevendorattrs != vendor)
1533 removevendorattrs += 2;
1534 if (!*removevendorattrs)
1537 alen = ATTRLEN(attrs);
1539 if (findvendorsubattr(removevendorattrs, vendor, -1)) {
1540 /* remove entire vendor attribute */
1541 memmove(attrs, attrs + alen, length - alen);
1546 subattrs = ATTRVAL(attrs) + 4;
1548 if (!attrvalidate(subattrs, sublen)) {
1549 debug(DBG_WARN, "dovendorrewrite: vendor attribute validation failed, no rewrite");
1554 while (sublen > 1) {
1555 alen = ATTRLEN(subattrs);
1558 if (findvendorsubattr(removevendorattrs, vendor, ATTRTYPE(subattrs))) {
1559 memmove(subattrs, subattrs + alen, length);
1565 ATTRLEN(attrs) -= rmlen;
1569 void dorewrite(uint8_t *buf, struct rewrite *rewrite) {
1570 uint8_t *attrs, alen;
1571 uint16_t len, rmlen = 0;
1573 if (!rewrite || (!rewrite->removeattrs && !rewrite->removevendorattrs))
1576 len = RADLEN(buf) - 20;
1579 alen = ATTRLEN(attrs);
1581 if (rewrite->removeattrs && strchr((char *)rewrite->removeattrs, ATTRTYPE(attrs))) {
1582 memmove(attrs, attrs + alen, len);
1584 } else if (ATTRTYPE(attrs) == RAD_Attr_Vendor_Specific && rewrite->removevendorattrs)
1585 rmlen += dovendorrewrite(attrs, len, rewrite->removevendorattrs);
1590 ((uint16_t *)buf)[1] = htons(RADLEN(buf) - rmlen);
1593 /* returns a pointer to the resized attribute value */
1594 uint8_t *resizeattr(uint8_t **buf, uint8_t newvallen, uint8_t type) {
1595 uint8_t *attrs, *attr, vallen;
1599 len = RADLEN(*buf) - 20;
1602 attr = attrget(attrs, len, type);
1606 vallen = ATTRVALLEN(attr);
1607 if (vallen == newvallen)
1610 len += newvallen - vallen;
1611 if (newvallen > vallen) {
1612 new = realloc(*buf, len + 20);
1614 debug(DBG_ERR, "resizeattr: malloc failed");
1623 memmove(attr + 2 + newvallen, attr + 2 + vallen, len - (attr - attrs + newvallen));
1624 attr[1] = newvallen + 2;
1625 ((uint16_t *)*buf)[1] = htons(len + 20);
1629 int rewriteusername(struct request *rq, char *in) {
1630 size_t nmatch = 10, reslen = 0, start = 0;
1631 regmatch_t pmatch[10], *pfield;
1633 unsigned char *result;
1634 char *out = rq->from->conf->rewriteattrreplacement;
1636 if (regexec(rq->from->conf->rewriteattrregex, in, nmatch, pmatch, 0)) {
1637 debug(DBG_DBG, "rewriteattr: username not matching, no rewrite");
1641 rq->origusername = stringcopy(in, 0);
1642 if (!rq->origusername)
1645 for (i = start; out[i]; i++) {
1646 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1647 pfield = &pmatch[out[i + 1] - '0'];
1648 if (pfield->rm_so >= 0) {
1649 reslen += i - start + pfield->rm_eo - pfield->rm_so;
1655 reslen += i - start;
1657 result = resizeattr(&rq->buf, reslen, RAD_Attr_User_Name);
1663 for (i = start; out[i]; i++) {
1664 if (out[i] == '\\' && out[i + 1] >= '1' && out[i + 1] <= '9') {
1665 pfield = &pmatch[out[i + 1] - '0'];
1666 if (pfield->rm_so >= 0) {
1667 memcpy(result + reslen, out + start, i - start);
1668 reslen += i - start;
1669 memcpy(result + reslen, in + pfield->rm_so, pfield->rm_eo - pfield->rm_so);
1670 reslen += pfield->rm_eo - pfield->rm_so;
1677 memcpy(result + reslen, out + start, i - start);
1678 reslen += i - start;
1679 memcpy(in, result, reslen);
1684 const char *radmsgtype2string(uint8_t code) {
1685 static const char *rad_msg_names[] = {
1686 "", "Access-Request", "Access-Accept", "Access-Reject",
1687 "Accounting-Request", "Accounting-Response", "", "",
1688 "", "", "", "Access-Challenge",
1689 "Status-Server", "Status-Client"
1691 return code < 14 && *rad_msg_names[code] ? rad_msg_names[code] : "Unknown";
1694 void char2hex(char *h, unsigned char c) {
1695 static const char hexdigits[] = { '0', '1', '2', '3', '4', '5', '6', '7',
1696 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
1697 h[0] = hexdigits[c / 16];
1698 h[1] = hexdigits[c % 16];
1702 char *radattr2ascii(char *ascii, size_t len, unsigned char *attr) {
1706 if (!attr || len == 1) {
1711 l = ATTRVALLEN(attr);
1712 s = (char *)ATTRVAL(attr);
1715 for (i = 0; i < l; i++) {
1716 if (s[i] > 31 && s[i] < 127) {
1718 if (d - ascii == len - 1)
1721 if (d - ascii > len - 4)
1726 if (d - ascii == len - 1)
1734 void acclog(unsigned char *attrs, int length, char *host) {
1735 unsigned char *attr;
1738 attr = attrget(attrs, length, RAD_Attr_User_Name);
1740 debug(DBG_INFO, "acclog: accounting-request from %s without username attribute", host);
1743 radattr2ascii(username, sizeof(username), attr);
1744 debug(DBG_INFO, "acclog: accounting-request from %s with username: %s", host, username);
1747 void respondaccounting(struct request *rq) {
1748 unsigned char *resp;
1752 debug(DBG_ERR, "respondstatusserver: malloc failed");
1755 memcpy(resp, rq->buf, 20);
1756 resp[0] = RAD_Accounting_Response;
1759 debug(DBG_DBG, "respondaccounting: responding to %s", rq->from->conf->host);
1760 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1763 void respondstatusserver(struct request *rq) {
1764 unsigned char *resp;
1768 debug(DBG_ERR, "respondstatusserver: malloc failed");
1771 memcpy(resp, rq->buf, 20);
1772 resp[0] = RAD_Access_Accept;
1775 debug(DBG_DBG, "respondstatusserver: responding to %s", rq->from->conf->host);
1776 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1779 void respondreject(struct request *rq, char *message) {
1780 unsigned char *resp;
1783 if (message && *message)
1784 len += 2 + strlen(message);
1788 debug(DBG_ERR, "respondreject: malloc failed");
1791 memcpy(resp, rq->buf, 20);
1792 resp[0] = RAD_Access_Reject;
1793 *(uint16_t *)(resp + 2) = htons(len);
1794 if (message && *message) {
1795 resp[20] = RAD_Attr_Reply_Message;
1796 resp[21] = len - 20;
1797 memcpy(resp + 22, message, len - 22);
1799 sendreply(rq->from, resp, rq->from->conf->type == 'U' ? &rq->fromsa : NULL);
1802 struct server *chooseserver(struct list *srvconfs) {
1803 struct list_node *entry;
1804 struct server *server, *best = NULL, *first = NULL;
1806 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
1807 server = ((struct clsrvconf *)entry->data)->servers;
1810 if (!server->connectionok)
1812 if (!server->lostrqs)
1818 if (server->lostrqs < best->lostrqs)
1821 return best ? best : first;
1824 void radsrv(struct request *rq) {
1825 uint8_t code, id, *auth, *attrs, *attr;
1827 struct server *to = NULL;
1828 char username[254], userascii[760];
1829 unsigned char newauth[16];
1830 struct realm *realm = NULL;
1832 code = *(uint8_t *)rq->buf;
1833 id = *(uint8_t *)(rq->buf + 1);
1834 len = RADLEN(rq->buf);
1835 auth = (uint8_t *)(rq->buf + 4);
1837 debug(DBG_DBG, "radsrv: code %d, id %d, length %d", code, id, len);
1839 if (code != RAD_Access_Request && code != RAD_Status_Server && code != RAD_Accounting_Request) {
1840 debug(DBG_INFO, "radsrv: server currently accepts only access-requests, accounting-requests and status-server, ignoring");
1845 attrs = rq->buf + 20;
1847 if (!attrvalidate(attrs, len)) {
1848 debug(DBG_WARN, "radsrv: attribute validation failed, ignoring packet");
1852 attr = attrget(attrs, len, RAD_Attr_Message_Authenticator);
1853 if (attr && (ATTRVALLEN(attr) != 16 || !checkmessageauth(rq->buf, ATTRVAL(attr), rq->from->conf->secret))) {
1854 debug(DBG_WARN, "radsrv: message authentication failed");
1858 if (code == RAD_Status_Server) {
1859 respondstatusserver(rq);
1863 /* below: code == RAD_Access_Request || code == RAD_Accounting_Request */
1865 if (code == RAD_Accounting_Request) {
1866 memset(newauth, 0, 16);
1867 if (!validauth(rq->buf, newauth, (unsigned char *)rq->from->conf->secret)) {
1868 debug(DBG_WARN, "radsrv: Accounting-Request message authentication failed");
1873 if (rq->from->conf->rewrite) {
1874 dorewrite(rq->buf, rq->from->conf->rewrite);
1875 len = RADLEN(rq->buf) - 20;
1878 attr = attrget(attrs, len, RAD_Attr_User_Name);
1880 if (code == RAD_Accounting_Request) {
1881 acclog(attrs, len, rq->from->conf->host);
1882 respondaccounting(rq);
1884 debug(DBG_WARN, "radsrv: ignoring access request, no username attribute");
1887 memcpy(username, ATTRVAL(attr), ATTRVALLEN(attr));
1888 username[ATTRVALLEN(attr)] = '\0';
1889 radattr2ascii(userascii, sizeof(userascii), attr);
1891 if (rq->from->conf->rewriteattrregex) {
1892 if (!rewriteusername(rq, username)) {
1893 debug(DBG_WARN, "radsrv: username malloc failed, ignoring request");
1896 len = RADLEN(rq->buf) - 20;
1897 auth = (uint8_t *)(rq->buf + 4);
1898 attrs = rq->buf + 20;
1901 debug(DBG_DBG, "%s with username: %s", radmsgtype2string(code), userascii);
1903 realm = id2realm(username, strlen(username));
1905 debug(DBG_INFO, "radsrv: ignoring request, don't know where to send it");
1909 to = chooseserver(code == RAD_Access_Request ? realm->srvconfs : realm->accsrvconfs);
1911 if (realm->message && code == RAD_Access_Request) {
1912 debug(DBG_INFO, "radsrv: sending reject to %s for %s", rq->from->conf->host, userascii);
1913 respondreject(rq, realm->message);
1918 if (options.loopprevention && !strcmp(rq->from->conf->name, to->conf->name)) {
1919 debug(DBG_INFO, "radsrv: Loop prevented, not forwarding request from client %s to server %s, discarding",
1920 rq->from->conf->name, to->conf->name);
1924 if (rqinqueue(to, rq->from, id, code)) {
1925 debug(DBG_INFO, "radsrv: already got %s from host %s with id %d, ignoring",
1926 radmsgtype2string(code), rq->from->conf->host, id);
1930 if (code != RAD_Accounting_Request) {
1931 if (!RAND_bytes(newauth, 16)) {
1932 debug(DBG_WARN, "radsrv: failed to generate random auth");
1938 printfchars(NULL, "auth", "%02x ", auth, 16);
1941 attr = attrget(attrs, len, RAD_Attr_User_Password);
1943 debug(DBG_DBG, "radsrv: found userpwdattr with value length %d", ATTRVALLEN(attr));
1944 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1948 attr = attrget(attrs, len, RAD_Attr_Tunnel_Password);
1950 debug(DBG_DBG, "radsrv: found tunnelpwdattr with value length %d", ATTRVALLEN(attr));
1951 if (!pwdrecrypt(ATTRVAL(attr), ATTRVALLEN(attr), rq->from->conf->secret, to->conf->secret, auth, newauth))
1956 memcpy(rq->origauth, auth, 16);
1957 if (code == RAD_Accounting_Request) {
1958 if (!radsign(rq->buf, (unsigned char *)to->conf->secret)) {
1959 debug(DBG_WARN, "radsrv: failed to sign Accounting-Request message");
1963 memcpy(auth, newauth, 16);
1971 int replyh(struct server *server, unsigned char *buf) {
1972 struct client *from;
1975 unsigned char *messageauth, *subattrs, *attrs, *attr, *username;
1976 struct sockaddr_storage fromsa;
1977 char tmp[760], stationid[760];
1979 server->connectionok = 1;
1980 server->lostrqs = 0;
1982 i = buf[1]; /* i is the id */
1984 if (*buf != RAD_Access_Accept && *buf != RAD_Access_Reject && *buf != RAD_Access_Challenge
1985 && *buf != RAD_Accounting_Response) {
1986 debug(DBG_INFO, "replyh: discarding message type %s, accepting only access accept, access reject, access challenge and accounting response messages", radmsgtype2string(*buf));
1989 debug(DBG_DBG, "got %s message with id %d", radmsgtype2string(*buf), i);
1991 rq = server->requests + i;
1993 pthread_mutex_lock(&server->newrq_mutex);
1994 if (!rq->buf || !rq->tries) {
1995 pthread_mutex_unlock(&server->newrq_mutex);
1996 debug(DBG_INFO, "replyh: no matching request sent with this id, ignoring reply");
2001 pthread_mutex_unlock(&server->newrq_mutex);
2002 debug(DBG_INFO, "replyh: already received, ignoring reply");
2006 if (!validauth(buf, rq->buf + 4, (unsigned char *)server->conf->secret)) {
2007 pthread_mutex_unlock(&server->newrq_mutex);
2008 debug(DBG_WARN, "replyh: invalid auth, ignoring reply");
2012 len = RADLEN(buf) - 20;
2015 if (!attrvalidate(attrs, len)) {
2016 pthread_mutex_unlock(&server->newrq_mutex);
2017 debug(DBG_WARN, "replyh: attribute validation failed, ignoring reply");
2021 /* Message Authenticator */
2022 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2024 if (ATTRVALLEN(messageauth) != 16) {
2025 pthread_mutex_unlock(&server->newrq_mutex);
2026 debug(DBG_WARN, "replyh: illegal message auth attribute length, ignoring reply");
2029 memcpy(tmp, buf + 4, 16);
2030 memcpy(buf + 4, rq->buf + 4, 16);
2031 if (!checkmessageauth(buf, ATTRVAL(messageauth), server->conf->secret)) {
2032 pthread_mutex_unlock(&server->newrq_mutex);
2033 debug(DBG_WARN, "replyh: message authentication failed, ignoring reply");
2036 memcpy(buf + 4, tmp, 16);
2037 debug(DBG_DBG, "replyh: message auth ok");
2040 if (*rq->buf == RAD_Status_Server) {
2042 pthread_mutex_unlock(&server->newrq_mutex);
2043 debug(DBG_DBG, "replyh: got status server response from %s", server->conf->host);
2049 pthread_mutex_unlock(&server->newrq_mutex);
2050 debug(DBG_INFO, "replyh: client gone, ignoring reply");
2054 if (server->conf->rewrite) {
2055 dorewrite(buf, server->conf->rewrite);
2056 len = RADLEN(buf) - 20;
2060 for (attr = attrs; (attr = attrget(attr, len - (attr - attrs), RAD_Attr_Vendor_Specific)); attr += ATTRLEN(attr)) {
2061 if (ATTRVALLEN(attr) <= 4)
2064 if (attr[2] != 0 || attr[3] != 0 || attr[4] != 1 || attr[5] != 55) /* 311 == MS */
2067 sublen = ATTRVALLEN(attr) - 4;
2068 subattrs = ATTRVAL(attr) + 4;
2069 if (!attrvalidate(subattrs, sublen) ||
2070 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Send_Key, "MS MPPE Send Key",
2071 rq, server->conf->secret, from->conf->secret) ||
2072 !msmppe(subattrs, sublen, RAD_VS_ATTR_MS_MPPE_Recv_Key, "MS MPPE Recv Key",
2073 rq, server->conf->secret, from->conf->secret))
2077 pthread_mutex_unlock(&server->newrq_mutex);
2078 debug(DBG_WARN, "replyh: MS attribute handling failed, ignoring reply");
2082 if (*buf == RAD_Access_Accept || *buf == RAD_Access_Reject || *buf == RAD_Accounting_Response) {
2083 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_User_Name);
2085 radattr2ascii(tmp, sizeof(tmp), attr);
2086 attr = attrget(rq->buf + 20, RADLEN(rq->buf) - 20, RAD_Attr_Calling_Station_Id);
2088 radattr2ascii(stationid, sizeof(stationid), attr);
2089 debug(DBG_INFO, "%s for user %s stationid %s from %s",
2090 radmsgtype2string(*buf), tmp, stationid, server->conf->host);
2092 debug(DBG_INFO, "%s for user %s from %s", radmsgtype2string(*buf), tmp, server->conf->host);
2096 buf[1] = (char)rq->origid;
2097 memcpy(buf + 4, rq->origauth, 16);
2099 printfchars(NULL, "origauth/buf+4", "%02x ", buf + 4, 16);
2102 if (rq->origusername) {
2103 username = resizeattr(&buf, strlen(rq->origusername), RAD_Attr_User_Name);
2105 pthread_mutex_unlock(&server->newrq_mutex);
2106 debug(DBG_WARN, "replyh: malloc failed, ignoring reply");
2109 memcpy(username, rq->origusername, strlen(rq->origusername));
2110 len = RADLEN(buf) - 20;
2113 messageauth = attrget(attrs, len, RAD_Attr_Message_Authenticator);
2117 if (!createmessageauth(buf, ATTRVAL(messageauth), from->conf->secret)) {
2118 pthread_mutex_unlock(&server->newrq_mutex);
2119 debug(DBG_WARN, "replyh: failed to create authenticator, malloc failed?, ignoring reply");
2122 debug(DBG_DBG, "replyh: computed messageauthattr");
2125 if (from->conf->type == 'U')
2126 fromsa = rq->fromsa;
2127 /* once we set received = 1, rq may be reused */
2130 debug(DBG_INFO, "replyh: passing reply to client %s", from->conf->name);
2131 sendreply(from, buf, from->conf->type == 'U' ? &fromsa : NULL);
2132 pthread_mutex_unlock(&server->newrq_mutex);
2136 void *udpclientrd(void *arg) {
2137 struct server *server;
2139 int *s = (int *)arg;
2143 buf = radudpget(*s, NULL, &server, NULL);
2144 if (!replyh(server, buf))
2149 void *tlsclientrd(void *arg) {
2150 struct server *server = (struct server *)arg;
2152 struct timeval lastconnecttry;
2155 /* yes, lastconnecttry is really necessary */
2156 lastconnecttry = server->lastconnecttry;
2157 buf = radtlsget(server->ssl);
2159 tlsconnect(server, &lastconnecttry, "clientrd");
2163 if (!replyh(server, buf))
2168 void *clientwr(void *arg) {
2169 struct server *server = (struct server *)arg;
2171 pthread_t tlsclientrdth;
2174 struct timeval now, lastsend;
2175 struct timespec timeout;
2176 struct request statsrvrq;
2177 unsigned char statsrvbuf[38];
2179 memset(&timeout, 0, sizeof(struct timespec));
2181 if (server->conf->statusserver) {
2182 memset(&statsrvrq, 0, sizeof(struct request));
2183 memset(statsrvbuf, 0, sizeof(statsrvbuf));
2184 statsrvbuf[0] = RAD_Status_Server;
2186 statsrvbuf[20] = RAD_Attr_Message_Authenticator;
2187 statsrvbuf[21] = 18;
2188 gettimeofday(&lastsend, NULL);
2191 if (server->conf->type == 'U') {
2192 server->connectionok = 1;
2194 tlsconnect(server, NULL, "new client");
2195 server->connectionok = 1;
2196 if (pthread_create(&tlsclientrdth, NULL, tlsclientrd, (void *)server))
2197 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
2201 pthread_mutex_lock(&server->newrq_mutex);
2202 if (!server->newrq) {
2203 gettimeofday(&now, NULL);
2204 if (server->conf->statusserver) {
2205 /* random 0-7 seconds */
2206 RAND_bytes(&rnd, 1);
2208 if (!timeout.tv_sec || timeout.tv_sec > lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd)
2209 timeout.tv_sec = lastsend.tv_sec + STATUS_SERVER_PERIOD + rnd;
2211 if (timeout.tv_sec) {
2212 debug(DBG_DBG, "clientwr: waiting up to %ld secs for new request", timeout.tv_sec - now.tv_sec);
2213 pthread_cond_timedwait(&server->newrq_cond, &server->newrq_mutex, &timeout);
2216 debug(DBG_DBG, "clientwr: waiting for new request");
2217 pthread_cond_wait(&server->newrq_cond, &server->newrq_mutex);
2220 if (server->newrq) {
2221 debug(DBG_DBG, "clientwr: got new request");
2224 debug(DBG_DBG, "clientwr: request timer expired, processing request queue");
2225 pthread_mutex_unlock(&server->newrq_mutex);
2227 for (i = 0; i < MAX_REQUESTS; i++) {
2228 pthread_mutex_lock(&server->newrq_mutex);
2229 while (i < MAX_REQUESTS && !server->requests[i].buf)
2231 if (i == MAX_REQUESTS) {
2232 pthread_mutex_unlock(&server->newrq_mutex);
2235 rq = server->requests + i;
2238 debug(DBG_DBG, "clientwr: packet %d in queue is marked as received", i);
2240 debug(DBG_DBG, "clientwr: freeing received packet %d from queue", i);
2242 /* setting this to NULL means that it can be reused */
2245 pthread_mutex_unlock(&server->newrq_mutex);
2249 gettimeofday(&now, NULL);
2250 if (now.tv_sec < rq->expiry.tv_sec) {
2251 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2252 timeout.tv_sec = rq->expiry.tv_sec;
2253 pthread_mutex_unlock(&server->newrq_mutex);
2257 if (rq->tries == (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2258 ? 1 : server->conf->retrycount + 1)) {
2259 debug(DBG_DBG, "clientwr: removing expired packet from queue");
2260 debug(DBG_WARN, "clientwr: no server response, %s dead?", server->conf->host);
2261 if (server->lostrqs < 255)
2264 /* setting this to NULL means that it can be reused */
2266 pthread_mutex_unlock(&server->newrq_mutex);
2269 pthread_mutex_unlock(&server->newrq_mutex);
2271 rq->expiry.tv_sec = now.tv_sec +
2272 (*rq->buf == RAD_Status_Server || server->conf->type == 'T'
2273 ? server->conf->retrydelay * (server->conf->retrycount + 1) : server->conf->retrydelay);
2274 if (!timeout.tv_sec || rq->expiry.tv_sec < timeout.tv_sec)
2275 timeout.tv_sec = rq->expiry.tv_sec;
2277 clientradput(server, server->requests[i].buf);
2278 gettimeofday(&lastsend, NULL);
2280 if (server->conf->statusserver) {
2281 gettimeofday(&now, NULL);
2282 if (now.tv_sec - lastsend.tv_sec >= STATUS_SERVER_PERIOD) {
2283 if (!RAND_bytes(statsrvbuf + 4, 16)) {
2284 debug(DBG_WARN, "clientwr: failed to generate random auth");
2287 statsrvrq.buf = malloc(sizeof(statsrvbuf));
2288 if (!statsrvrq.buf) {
2289 debug(DBG_ERR, "clientwr: malloc failed");
2292 memcpy(statsrvrq.buf, statsrvbuf, sizeof(statsrvbuf));
2293 debug(DBG_DBG, "clientwr: sending status server to %s", server->conf->host);
2294 lastsend.tv_sec = now.tv_sec;
2295 sendrq(server, &statsrvrq);
2301 void *udpserverwr(void *arg) {
2302 struct replyq *replyq = udp_server_replyq;
2303 struct reply *reply;
2306 pthread_mutex_lock(&replyq->mutex);
2307 while (!(reply = (struct reply *)list_shift(replyq->replies))) {
2308 debug(DBG_DBG, "udp server writer, waiting for signal");
2309 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2310 debug(DBG_DBG, "udp server writer, got signal");
2312 pthread_mutex_unlock(&replyq->mutex);
2314 if (sendto(udp_server_sock, reply->buf, RADLEN(reply->buf), 0,
2315 (struct sockaddr *)&reply->tosa, SOCKADDR_SIZE(reply->tosa)) < 0)
2316 debug(DBG_WARN, "sendudp: send failed");
2322 void *udpserverrd(void *arg) {
2324 pthread_t udpserverwrth;
2325 struct clsrvconf *listenres;
2327 listenres = resolve_hostport('U', options.listenudp, DEFAULT_UDP_PORT);
2328 if ((udp_server_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2329 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2331 debug(DBG_WARN, "udpserverrd: listening for UDP on %s:%s",
2332 listenres->host ? listenres->host : "*", listenres->port);
2333 freeclsrvres(listenres);
2335 if (pthread_create(&udpserverwrth, NULL, udpserverwr, NULL))
2336 debugx(1, DBG_ERR, "pthread_create failed");
2339 memset(&rq, 0, sizeof(struct request));
2340 rq.buf = radudpget(udp_server_sock, &rq.from, NULL, &rq.fromsa);
2345 void *udpaccserverrd(void *arg) {
2347 struct clsrvconf *listenres;
2349 listenres = resolve_hostport('U', options.listenaccudp, DEFAULT_UDP_PORT);
2350 if ((udp_accserver_sock = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2351 debugx(1, DBG_ERR, "udpserverrd: socket/bind failed");
2353 debug(DBG_WARN, "udpaccserverrd: listening for UDP on %s:%s",
2354 listenres->host ? listenres->host : "*", listenres->port);
2355 freeclsrvres(listenres);
2358 memset(&rq, 0, sizeof(struct request));
2359 rq.buf = radudpget(udp_accserver_sock, &rq.from, NULL, &rq.fromsa);
2360 if (*(uint8_t *)rq.buf == RAD_Accounting_Request) {
2364 debug(DBG_INFO, "udpaccserverrd: got something other than accounting-request, ignoring");
2369 void *tlsserverwr(void *arg) {
2371 unsigned long error;
2372 struct client *client = (struct client *)arg;
2373 struct replyq *replyq;
2374 struct reply *reply;
2376 debug(DBG_DBG, "tlsserverwr starting for %s", client->conf->host);
2377 replyq = client->replyq;
2379 pthread_mutex_lock(&replyq->mutex);
2380 while (!list_first(replyq->replies)) {
2382 debug(DBG_DBG, "tls server writer, waiting for signal");
2383 pthread_cond_wait(&replyq->cond, &replyq->mutex);
2384 debug(DBG_DBG, "tls server writer, got signal");
2387 /* ssl might have changed while waiting */
2388 pthread_mutex_unlock(&replyq->mutex);
2389 debug(DBG_DBG, "tlsserverwr: exiting as requested");
2393 reply = (struct reply *)list_shift(replyq->replies);
2394 pthread_mutex_unlock(&replyq->mutex);
2395 cnt = SSL_write(client->ssl, reply->buf, RADLEN(reply->buf));
2397 debug(DBG_DBG, "tlsserverwr: Sent %d bytes, Radius packet of length %d",
2398 cnt, RADLEN(reply->buf));
2400 while ((error = ERR_get_error()))
2401 debug(DBG_ERR, "tlsserverwr: SSL: %s", ERR_error_string(error, NULL));
2407 void tlsserverrd(struct client *client) {
2409 pthread_t tlsserverwrth;
2411 debug(DBG_DBG, "tlsserverrd starting for %s", client->conf->host);
2413 if (pthread_create(&tlsserverwrth, NULL, tlsserverwr, (void *)client)) {
2414 debug(DBG_ERR, "tlsserverrd: pthread_create failed");
2419 memset(&rq, 0, sizeof(struct request));
2420 rq.buf = radtlsget(client->ssl);
2423 debug(DBG_DBG, "tlsserverrd: got Radius message from %s", client->conf->host);
2428 debug(DBG_ERR, "tlsserverrd: connection lost");
2429 /* stop writer by setting ssl to NULL and give signal in case waiting for data */
2431 pthread_mutex_lock(&client->replyq->mutex);
2432 pthread_cond_signal(&client->replyq->cond);
2433 pthread_mutex_unlock(&client->replyq->mutex);
2434 debug(DBG_DBG, "tlsserverrd: waiting for writer to end");
2435 pthread_join(tlsserverwrth, NULL);
2436 removeclientrqs(client);
2437 debug(DBG_DBG, "tlsserverrd for %s exiting", client->conf->host);
2440 void *tlsservernew(void *arg) {
2442 struct sockaddr_storage from;
2443 size_t fromlen = sizeof(from);
2444 struct clsrvconf *conf;
2445 struct list_node *cur = NULL;
2448 unsigned long error;
2449 struct client *client;
2452 if (getpeername(s, (struct sockaddr *)&from, &fromlen)) {
2453 debug(DBG_DBG, "tlsserverrd: getpeername failed, exiting");
2456 debug(DBG_WARN, "incoming TLS connection from %s", addr2string((struct sockaddr *)&from, fromlen));
2458 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2460 ssl = SSL_new(conf->ssl_ctx);
2463 if (SSL_accept(ssl) <= 0) {
2464 while ((error = ERR_get_error()))
2465 debug(DBG_ERR, "tlsserverrd: SSL: %s", ERR_error_string(error, NULL));
2466 debug(DBG_ERR, "SSL_accept failed");
2469 cert = verifytlscert(ssl);
2475 if (verifyconfcert(cert, conf)) {
2477 client = addclient(conf);
2480 tlsserverrd(client);
2481 removeclient(client);
2483 debug(DBG_WARN, "Failed to create new client instance");
2486 conf = find_conf('T', (struct sockaddr *)&from, clconfs, &cur);
2488 debug(DBG_WARN, "ignoring request, no matching TLS client");
2494 shutdown(s, SHUT_RDWR);
2500 pthread_t tlsserverth;
2502 struct sockaddr_storage from;
2503 size_t fromlen = sizeof(from);
2504 struct clsrvconf *listenres;
2506 listenres = resolve_hostport('T', options.listentcp, DEFAULT_TLS_PORT);
2507 if ((s = bindtoaddr(listenres->addrinfo, AF_UNSPEC, 1, 0)) < 0)
2508 debugx(1, DBG_ERR, "tlslistener: socket/bind failed");
2510 debug(DBG_WARN, "listening for incoming TCP on %s:%s", listenres->host ? listenres->host : "*", listenres->port);
2511 freeclsrvres(listenres);
2515 snew = accept(s, (struct sockaddr *)&from, &fromlen);
2517 debug(DBG_WARN, "accept failed");
2520 if (pthread_create(&tlsserverth, NULL, tlsservernew, (void *)&snew)) {
2521 debug(DBG_ERR, "tlslistener: pthread_create failed");
2522 shutdown(snew, SHUT_RDWR);
2526 pthread_detach(tlsserverth);
2531 void tlsadd(char *value, char *cacertfile, char *cacertpath, char *certfile, char *certkeyfile, char *certkeypwd) {
2534 STACK_OF(X509_NAME) *calist;
2536 unsigned long error;
2538 if (!certfile || !certkeyfile)
2539 debugx(1, DBG_ERR, "TLSCertificateFile and TLSCertificateKeyFile must be specified in TLS context %s", value);
2541 if (!cacertfile && !cacertpath)
2542 debugx(1, DBG_ERR, "CA Certificate file or path need to be specified in TLS context %s", value);
2545 ssl_locks = malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
2546 ssl_lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long));
2547 for (i = 0; i < CRYPTO_num_locks(); i++) {
2548 ssl_lock_count[i] = 0;
2549 pthread_mutex_init(&ssl_locks[i], NULL);
2551 CRYPTO_set_id_callback(ssl_thread_id);
2552 CRYPTO_set_locking_callback(ssl_locking_callback);
2554 SSL_load_error_strings();
2557 while (!RAND_status()) {
2558 time_t t = time(NULL);
2559 pid_t pid = getpid();
2560 RAND_seed((unsigned char *)&t, sizeof(time_t));
2561 RAND_seed((unsigned char *)&pid, sizeof(pid));
2564 ctx = SSL_CTX_new(TLSv1_method());
2566 SSL_CTX_set_default_passwd_cb_userdata(ctx, certkeypwd);
2567 SSL_CTX_set_default_passwd_cb(ctx, pem_passwd_cb);
2569 if (!SSL_CTX_use_certificate_chain_file(ctx, certfile) ||
2570 !SSL_CTX_use_PrivateKey_file(ctx, certkeyfile, SSL_FILETYPE_PEM) ||
2571 !SSL_CTX_check_private_key(ctx) ||
2572 !SSL_CTX_load_verify_locations(ctx, cacertfile, cacertpath)) {
2573 while ((error = ERR_get_error()))
2574 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2575 debugx(1, DBG_ERR, "Error initialising SSL/TLS in TLS context %s", value);
2578 calist = cacertfile ? SSL_load_client_CA_file(cacertfile) : NULL;
2579 if (!cacertfile || calist) {
2582 calist = sk_X509_NAME_new_null();
2583 if (!SSL_add_dir_cert_subjects_to_stack(calist, cacertpath)) {
2584 sk_X509_NAME_free(calist);
2590 while ((error = ERR_get_error()))
2591 debug(DBG_ERR, "SSL: %s", ERR_error_string(error, NULL));
2592 debugx(1, DBG_ERR, "Error adding CA subjects in TLS context %s", value);
2594 SSL_CTX_set_client_CA_list(ctx, calist);
2596 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, verify_cb);
2597 SSL_CTX_set_verify_depth(ctx, MAX_CERT_DEPTH + 1);
2599 new = malloc(sizeof(struct tls));
2600 if (!new || !list_push(tlsconfs, new))
2601 debugx(1, DBG_ERR, "malloc failed");
2603 memset(new, 0, sizeof(struct tls));
2604 new->name = stringcopy(value, 0);
2606 debugx(1, DBG_ERR, "malloc failed");
2609 debug(DBG_DBG, "tlsadd: added TLS context %s", value);
2613 struct list_node *entry;
2616 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2617 t = (struct tls *)entry->data;
2621 SSL_CTX_free(t->ctx);
2623 list_destroy(tlsconfs);
2627 SSL_CTX *tlsgetctx(char *alt1, char *alt2) {
2628 struct list_node *entry;
2629 struct tls *t, *t1 = NULL, *t2 = NULL;
2631 for (entry = list_first(tlsconfs); entry; entry = list_next(entry)) {
2632 t = (struct tls *)entry->data;
2633 if (!strcasecmp(t->name, alt1)) {
2637 if (!t2 && alt2 && !strcasecmp(t->name, alt2))
2648 struct list *addsrvconfs(char *value, char **names) {
2649 struct list *conflist;
2651 struct list_node *entry;
2652 struct clsrvconf *conf = NULL;
2654 if (!names || !*names)
2657 conflist = list_create();
2659 debugx(1, DBG_ERR, "malloc failed");
2661 for (n = 0; names[n]; n++) {
2662 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
2663 conf = (struct clsrvconf *)entry->data;
2664 if (!strcasecmp(names[n], conf->name))
2668 debugx(1, DBG_ERR, "addsrvconfs failed for realm %s, no server named %s", value, names[n]);
2670 if (!list_push(conflist, conf))
2671 debugx(1, DBG_ERR, "malloc failed");
2672 debug(DBG_DBG, "addsrvconfs: added server %s for realm %s", conf->name, value);
2678 void addrealm(char *value, char **servers, char **accservers, char *message) {
2680 struct realm *realm;
2681 char *s, *regex = NULL;
2683 if (*value == '/') {
2684 /* regexp, remove optional trailing / if present */
2685 if (value[strlen(value) - 1] == '/')
2686 value[strlen(value) - 1] = '\0';
2688 /* not a regexp, let us make it one */
2689 if (*value == '*' && !value[1])
2690 regex = stringcopy(".*", 0);
2692 for (n = 0, s = value; *s;)
2695 regex = malloc(strlen(value) + n + 3);
2698 for (n = 1, s = value; *s; s++) {
2708 debugx(1, DBG_ERR, "malloc failed");
2709 debug(DBG_DBG, "addrealm: constructed regexp %s from %s", regex, value);
2712 realm = malloc(sizeof(struct realm));
2714 debugx(1, DBG_ERR, "malloc failed");
2716 memset(realm, 0, sizeof(struct realm));
2717 realm->name = stringcopy(value, 0);
2719 debugx(1, DBG_ERR, "malloc failed");
2720 if (message && strlen(message) > 253)
2721 debugx(1, DBG_ERR, "ReplyMessage can be at most 253 bytes");
2722 realm->message = message;
2724 if (regcomp(&realm->regex, regex ? regex : value + 1, REG_ICASE | REG_NOSUB))
2725 debugx(1, DBG_ERR, "addrealm: failed to compile regular expression %s", regex ? regex : value + 1);
2729 realm->srvconfs = addsrvconfs(value, servers);
2730 realm->accsrvconfs = addsrvconfs(value, accservers);
2732 if (!list_push(realms, realm))
2733 debugx(1, DBG_ERR, "malloc failed");
2734 debug(DBG_DBG, "addrealm: added realm %s", value);
2737 int addmatchcertattr(struct clsrvconf *conf, char *matchcertattr) {
2741 if (!strncasecmp(matchcertattr, "CN:/", 4)) {
2742 r = &conf->certcnregex;
2743 v = matchcertattr + 4;
2744 } else if (!strncasecmp(matchcertattr, "SubjectAltName:URI:/", 20)) {
2745 r = &conf->certuriregex;
2746 v = matchcertattr + 20;
2751 /* regexp, remove optional trailing / if present */
2752 if (v[strlen(v) - 1] == '/')
2753 v[strlen(v) - 1] = '\0';
2757 *r = malloc(sizeof(regex_t));
2759 debug(DBG_ERR, "malloc failed");
2762 if (regcomp(*r, v, REG_ICASE | REG_NOSUB)) {
2765 debug(DBG_ERR, "failed to compile regular expression %s", v);
2771 int addrewriteattr(struct clsrvconf *conf, char *rewriteattr) {
2774 v = rewriteattr + 11;
2775 if (strncasecmp(rewriteattr, "User-Name:/", 11) || !*v)
2777 /* regexp, remove optional trailing / if present */
2778 if (v[strlen(v) - 1] == '/')
2779 v[strlen(v) - 1] = '\0';
2787 conf->rewriteattrregex = malloc(sizeof(regex_t));
2788 if (!conf->rewriteattrregex) {
2789 debug(DBG_ERR, "malloc failed");
2793 conf->rewriteattrreplacement = stringcopy(w, 0);
2794 if (!conf->rewriteattrreplacement) {
2795 free(conf->rewriteattrregex);
2796 conf->rewriteattrregex = NULL;
2800 if (regcomp(conf->rewriteattrregex, v, REG_ICASE | REG_EXTENDED)) {
2801 free(conf->rewriteattrregex);
2802 conf->rewriteattrregex = NULL;
2803 free(conf->rewriteattrreplacement);
2804 conf->rewriteattrreplacement = NULL;
2805 debug(DBG_ERR, "failed to compile regular expression %s", v);
2812 /* should accept both names and numeric values, only numeric right now */
2813 uint8_t attrname2val(char *attrname) {
2816 val = atoi(attrname);
2817 return val > 0 && val < 256 ? val : 0;
2820 /* should accept both names and numeric values, only numeric right now */
2821 int vattrname2val(char *attrname, uint32_t *vendor, uint32_t *type) {
2824 *vendor = atoi(attrname);
2825 s = strchr(attrname, ':');
2830 *type = atoi(s + 1);
2831 return *type >= 0 && *type < 256;
2834 void rewritefree() {
2835 struct list_node *entry;
2836 struct rewriteconf *r;
2838 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2839 r = (struct rewriteconf *)entry->data;
2845 list_destroy(rewriteconfs);
2846 rewriteconfs = NULL;
2849 struct rewrite *getrewrite(char *alt1, char *alt2) {
2850 struct list_node *entry;
2851 struct rewriteconf *r, *r1 = NULL, *r2 = NULL;
2853 for (entry = list_first(rewriteconfs); entry; entry = list_next(entry)) {
2854 r = (struct rewriteconf *)entry->data;
2855 if (!strcasecmp(r->name, alt1)) {
2859 if (!r2 && alt2 && !strcasecmp(r->name, alt2))
2870 void addrewrite(char *value, char **attrs, char **vattrs) {
2871 struct rewriteconf *new;
2872 struct rewrite *rewrite = NULL;
2875 uint32_t *p, *va = NULL;
2879 for (; attrs[n]; n++);
2880 a = malloc((n + 1) * sizeof(uint8_t));
2882 debugx(1, DBG_ERR, "malloc failed");
2884 for (i = 0; i < n; i++) {
2885 if (!(a[i] = attrname2val(attrs[i])))
2886 debugx(1, DBG_ERR, "addrewrite: invalid attribute %s", attrs[i]);
2895 for (; vattrs[n]; n++);
2896 va = malloc((2 * n + 1) * sizeof(uint32_t));
2898 debugx(1, DBG_ERR, "malloc failed");
2900 for (p = va, i = 0; i < n; i++, p += 2) {
2901 if (!vattrname2val(vattrs[i], p, p + 1))
2902 debugx(1, DBG_ERR, "addrewrite: invalid vendor attribute %s", vattrs[i]);
2910 rewrite = malloc(sizeof(struct rewrite));
2912 debugx(1, DBG_ERR, "malloc failed");
2913 rewrite->removeattrs = a;
2914 rewrite->removevendorattrs = va;
2917 new = malloc(sizeof(struct rewriteconf));
2918 if (!new || !list_push(rewriteconfs, new))
2919 debugx(1, DBG_ERR, "malloc failed");
2921 memset(new, 0, sizeof(struct rewriteconf));
2922 new->name = stringcopy(value, 0);
2924 debugx(1, DBG_ERR, "malloc failed");
2926 new->rewrite = rewrite;
2927 debug(DBG_DBG, "addrewrite: added rewrite block %s", value);
2930 void confclient_cb(struct gconffile **cf, char *block, char *opt, char *val) {
2931 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL, *rewriteattr = NULL;
2932 struct clsrvconf *conf;
2934 debug(DBG_DBG, "confclient_cb called for %s", block);
2936 conf = malloc(sizeof(struct clsrvconf));
2937 if (!conf || !list_push(clconfs, conf))
2938 debugx(1, DBG_ERR, "malloc failed");
2939 memset(conf, 0, sizeof(struct clsrvconf));
2940 conf->certnamecheck = 1;
2942 getgenericconfig(cf, block,
2943 "type", CONF_STR, &type,
2944 "host", CONF_STR, &conf->host,
2945 "secret", CONF_STR, &conf->secret,
2946 "tls", CONF_STR, &tls,
2947 "matchcertificateattribute", CONF_STR, &matchcertattr,
2948 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
2949 "rewrite", CONF_STR, &rewrite,
2950 "rewriteattribute", CONF_STR, &rewriteattr,
2954 conf->name = stringcopy(val, 0);
2956 conf->host = stringcopy(val, 0);
2958 if (type && !strcasecmp(type, "udp")) {
2961 } else if (type && !strcasecmp(type, "tls")) {
2962 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultclient", "default");
2964 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
2965 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
2966 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
2970 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
2975 free(matchcertattr);
2977 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultclient", "default");
2980 if (!addrewriteattr(conf, rewriteattr))
2981 debugx(1, DBG_ERR, "error in block %s, invalid RewriteAttributeValue", block);
2985 if (!resolvepeer(conf, 0))
2986 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
2988 if (!conf->secret) {
2989 if (conf->type == 'U')
2990 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
2991 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
2995 void confserver_cb(struct gconffile **cf, char *block, char *opt, char *val) {
2996 char *type = NULL, *tls = NULL, *matchcertattr = NULL, *rewrite = NULL;
2997 long int retrydelay = LONG_MIN, retrycount = LONG_MIN;
2998 struct clsrvconf *conf;
3000 debug(DBG_DBG, "confserver_cb called for %s", block);
3002 conf = malloc(sizeof(struct clsrvconf));
3003 if (!conf || !list_push(srvconfs, conf))
3004 debugx(1, DBG_ERR, "malloc failed");
3005 memset(conf, 0, sizeof(struct clsrvconf));
3006 conf->certnamecheck = 1;
3008 getgenericconfig(cf, block,
3009 "type", CONF_STR, &type,
3010 "host", CONF_STR, &conf->host,
3011 "port", CONF_STR, &conf->port,
3012 "secret", CONF_STR, &conf->secret,
3013 "tls", CONF_STR, &tls,
3014 "MatchCertificateAttribute", CONF_STR, &matchcertattr,
3015 "rewrite", CONF_STR, &rewrite,
3016 "StatusServer", CONF_BLN, &conf->statusserver,
3017 "RetryDelay", CONF_LINT, &retrydelay,
3018 "RetryCount", CONF_LINT, &retrycount,
3019 "CertificateNameCheck", CONF_BLN, &conf->certnamecheck,
3023 conf->name = stringcopy(val, 0);
3025 conf->host = stringcopy(val, 0);
3027 if (type && !strcasecmp(type, "udp")) {
3031 conf->port = stringcopy(DEFAULT_UDP_PORT, 0);
3032 } else if (type && !strcasecmp(type, "tls")) {
3033 conf->ssl_ctx = tls ? tlsgetctx(tls, NULL) : tlsgetctx("defaultserver", "default");
3035 debugx(1, DBG_ERR, "error in block %s, no tls context defined", block);
3036 if (matchcertattr && !addmatchcertattr(conf, matchcertattr))
3037 debugx(1, DBG_ERR, "error in block %s, invalid MatchCertificateAttributeValue", block);
3039 conf->port = stringcopy(DEFAULT_TLS_PORT, 0);
3043 debugx(1, DBG_ERR, "error in block %s, type must be set to UDP or TLS", block);
3048 free(matchcertattr);
3050 if (retrydelay != LONG_MIN) {
3051 if (retrydelay < 1 || retrydelay > 60)
3052 debugx(1, DBG_ERR, "error in block %s, value of option RetryDelay is %d, must be 1-60", block, retrydelay);
3053 conf->retrydelay = (uint8_t)retrydelay;
3055 conf->retrydelay = REQUEST_RETRY_DELAY;
3057 if (retrycount != LONG_MIN) {
3058 if (retrycount < 0 || retrycount > 10)
3059 debugx(1, DBG_ERR, "error in block %s, value of option RetryCount is %d, must be 0-10", block, retrycount);
3060 conf->retrycount = (uint8_t)retrycount;
3062 conf->retrycount = REQUEST_RETRY_COUNT;
3064 conf->rewrite = rewrite ? getrewrite(rewrite, NULL) : getrewrite("defaultserver", "default");
3066 if (!resolvepeer(conf, 0))
3067 debugx(1, DBG_ERR, "failed to resolve host %s port %s, exiting", conf->host ? conf->host : "(null)", conf->port ? conf->port : "(null)");
3069 if (!conf->secret) {
3070 if (conf->type == 'U')
3071 debugx(1, DBG_ERR, "error in block %s, secret must be specified for UDP", block);
3072 conf->secret = stringcopy(DEFAULT_TLS_SECRET, 0);
3076 void confrealm_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3077 char **servers = NULL, **accservers = NULL, *msg = NULL;
3079 debug(DBG_DBG, "confrealm_cb called for %s", block);
3081 getgenericconfig(cf, block,
3082 "server", CONF_MSTR, &servers,
3083 "accountingServer", CONF_MSTR, &accservers,
3084 "ReplyMessage", CONF_STR, &msg,
3088 addrealm(val, servers, accservers, msg);
3091 void conftls_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3092 char *cacertfile = NULL, *cacertpath = NULL, *certfile = NULL, *certkeyfile = NULL, *certkeypwd = NULL;
3094 debug(DBG_DBG, "conftls_cb called for %s", block);
3096 getgenericconfig(cf, block,
3097 "CACertificateFile", CONF_STR, &cacertfile,
3098 "CACertificatePath", CONF_STR, &cacertpath,
3099 "CertificateFile", CONF_STR, &certfile,
3100 "CertificateKeyFile", CONF_STR, &certkeyfile,
3101 "CertificateKeyPassword", CONF_STR, &certkeypwd,
3105 tlsadd(val, cacertfile, cacertpath, certfile, certkeyfile, certkeypwd);
3113 void confrewrite_cb(struct gconffile **cf, char *block, char *opt, char *val) {
3114 char **attrs = NULL, **vattrs = NULL;
3116 debug(DBG_DBG, "confrewrite_cb called for %s", block);
3118 getgenericconfig(cf, block,
3119 "removeAttribute", CONF_MSTR, &attrs,
3120 "removeVendorAttribute", CONF_MSTR, &vattrs,
3123 addrewrite(val, attrs, vattrs);
3126 void getmainconfig(const char *configfile) {
3127 long int loglevel = LONG_MIN;
3128 struct gconffile *cfs;
3130 cfs = openconfigfile(configfile);
3131 memset(&options, 0, sizeof(options));
3133 clconfs = list_create();
3135 debugx(1, DBG_ERR, "malloc failed");
3137 srvconfs = list_create();
3139 debugx(1, DBG_ERR, "malloc failed");
3141 realms = list_create();
3143 debugx(1, DBG_ERR, "malloc failed");
3145 tlsconfs = list_create();
3147 debugx(1, DBG_ERR, "malloc failed");
3149 rewriteconfs = list_create();
3151 debugx(1, DBG_ERR, "malloc failed");
3153 getgenericconfig(&cfs, NULL,
3154 "ListenUDP", CONF_STR, &options.listenudp,
3155 "ListenTCP", CONF_STR, &options.listentcp,
3156 "ListenAccountingUDP", CONF_STR, &options.listenaccudp,
3157 "SourceUDP", CONF_STR, &options.sourceudp,
3158 "SourceTCP", CONF_STR, &options.sourcetcp,
3159 "LogLevel", CONF_LINT, &loglevel,
3160 "LogDestination", CONF_STR, &options.logdestination,
3161 "LoopPrevention", CONF_BLN, &options.loopprevention,
3162 "Client", CONF_CBK, confclient_cb,
3163 "Server", CONF_CBK, confserver_cb,
3164 "Realm", CONF_CBK, confrealm_cb,
3165 "TLS", CONF_CBK, conftls_cb,
3166 "Rewrite", CONF_CBK, confrewrite_cb,
3172 if (loglevel != LONG_MIN) {
3173 if (loglevel < 1 || loglevel > 4)
3174 debugx(1, DBG_ERR, "error in %s, value of option LogLevel is %d, must be 1, 2, 3 or 4", configfile, loglevel);
3175 options.loglevel = (uint8_t)loglevel;
3179 void getargs(int argc, char **argv, uint8_t *foreground, uint8_t *pretend, uint8_t *loglevel, char **configfile) {
3182 while ((c = getopt(argc, argv, "c:d:fpv")) != -1) {
3185 *configfile = optarg;
3188 if (strlen(optarg) != 1 || *optarg < '1' || *optarg > '4')
3189 debugx(1, DBG_ERR, "Debug level must be 1, 2, 3 or 4, not %s", optarg);
3190 *loglevel = *optarg - '0';
3199 debugx(0, DBG_ERR, "radsecproxy 1.1-beta");
3204 if (!(argc - optind))
3208 debugx(1, DBG_ERR, "Usage:\n%s [ -c configfile ] [ -d debuglevel ] [ -f ] [ -p ] [ -v ]", argv[0]);
3212 int daemon(int a, int b) {
3220 for (i = 0; i < 3; i++) {
3222 open("/dev/null", O_RDWR);
3228 void *sighandler(void *arg) {
3233 sigemptyset(&sigset);
3234 sigaddset(&sigset, SIGPIPE);
3235 sigwait(&sigset, &sig);
3236 /* only get SIGPIPE right now, so could simplify below code */
3239 /* completely ignoring this */
3242 debug(DBG_WARN, "sighandler: got SIGPIPE, TLS write error?");
3245 debug(DBG_WARN, "sighandler: ignoring signal %d", sig);
3250 int main(int argc, char **argv) {
3251 pthread_t sigth, udpserverth, udpaccserverth, udpclient4rdth, udpclient6rdth;
3253 struct list_node *entry;
3254 uint8_t foreground = 0, pretend = 0, loglevel = 0;
3255 char *configfile = NULL;
3257 debug_init("radsecproxy");
3258 debug_set_level(DEBUG_LEVEL);
3259 getargs(argc, argv, &foreground, &pretend, &loglevel, &configfile);
3261 debug_set_level(loglevel);
3262 getmainconfig(configfile ? configfile : CONFIG_MAIN);
3264 options.loglevel = loglevel;
3265 else if (options.loglevel)
3266 debug_set_level(options.loglevel);
3268 debug_set_destination(options.logdestination ? options.logdestination : "x-syslog:///");
3269 free(options.logdestination);
3271 if (!list_first(clconfs))
3272 debugx(1, DBG_ERR, "No clients configured, nothing to do, exiting");
3273 if (!list_first(srvconfs))
3274 debugx(1, DBG_ERR, "No servers configured, nothing to do, exiting");
3275 if (!list_first(realms))
3276 debugx(1, DBG_ERR, "No realms configured, nothing to do, exiting");
3279 debugx(0, DBG_ERR, "All OK so far; exiting since only pretending");
3281 if (!foreground && (daemon(0, 0) < 0))
3282 debugx(1, DBG_ERR, "daemon() failed: %s", strerror(errno));
3284 debug(DBG_INFO, "radsecproxy 1.1-beta starting");
3286 sigemptyset(&sigset);
3287 /* exit on all but SIGPIPE, ignore more? */
3288 sigaddset(&sigset, SIGPIPE);
3289 pthread_sigmask(SIG_BLOCK, &sigset, NULL);
3290 pthread_create(&sigth, NULL, sighandler, NULL);
3292 if (client_udp_count) {
3293 udp_server_replyq = newreplyq();
3294 if (pthread_create(&udpserverth, NULL, udpserverrd, NULL))
3295 debugx(1, DBG_ERR, "pthread_create failed");
3296 if (options.listenaccudp)
3297 if (pthread_create(&udpaccserverth, NULL, udpaccserverrd, NULL))
3298 debugx(1, DBG_ERR, "pthread_create failed");
3301 for (entry = list_first(srvconfs); entry; entry = list_next(entry)) {
3302 addserver((struct clsrvconf *)entry->data);
3303 if (pthread_create(&((struct clsrvconf *)entry->data)->servers->clientth, NULL, clientwr,
3304 (void *)((struct clsrvconf *)entry->data)->servers))
3305 debugx(1, DBG_ERR, "pthread_create failed");
3307 /* srcudpres no longer needed, while srctcpres is needed later */
3309 freeaddrinfo(srcudpres);
3312 if (udp_client4_sock >= 0)
3313 if (pthread_create(&udpclient4rdth, NULL, udpclientrd, (void *)&udp_client4_sock))
3314 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3315 if (udp_client6_sock >= 0)
3316 if (pthread_create(&udpclient6rdth, NULL, udpclientrd, (void *)&udp_client6_sock))
3317 debugx(1, DBG_ERR, "clientwr: pthread_create failed");
3319 if (client_tls_count)
3320 return tlslistener();
3322 /* just hang around doing nothing, anything to do here? */