3 Copyright (C) 1998-2005 Ivo Timmermans,
4 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
5 2006 Scott Lamb <slamb@slamb.org>
6 2010 Brandon Black <blblack@gmail.com>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 #include "connection.h"
47 static io_t device_io;
54 proxytype_t proxytype;
56 bool disablebuggypeers;
58 char *scriptinterpreter;
59 char *scriptextension;
61 bool node_read_ecdsa_public_key(node_t *n) {
62 if(ecdsa_active(n->ecdsa))
65 splay_tree_t *config_tree;
70 init_configuration(&config_tree);
71 if(!read_host_config(config_tree, n->name))
74 /* First, check for simple ECDSAPublicKey statement */
76 if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
77 n->ecdsa = ecdsa_set_base64_public_key(p);
82 /* Else, check for ECDSAPublicKeyFile statement and read it */
84 if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
85 xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
87 fp = fopen(pubname, "r");
90 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", pubname, strerror(errno));
94 n->ecdsa = ecdsa_read_pem_public_key(fp);
98 exit_configuration(&config_tree);
103 bool read_ecdsa_public_key(connection_t *c) {
104 if(ecdsa_active(c->ecdsa))
111 if(!c->config_tree) {
112 init_configuration(&c->config_tree);
113 if(!read_host_config(c->config_tree, c->name))
117 /* First, check for simple ECDSAPublicKey statement */
119 if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
120 c->ecdsa = ecdsa_set_base64_public_key(p);
125 /* Else, check for ECDSAPublicKeyFile statement and read it */
127 if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
128 xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
130 fp = fopen(fname, "r");
133 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
134 fname, strerror(errno));
139 c->ecdsa = ecdsa_read_pem_public_key(fp);
143 logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
148 bool read_rsa_public_key(connection_t *c) {
149 if(ecdsa_active(c->ecdsa))
156 /* First, check for simple PublicKey statement */
158 if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
159 c->rsa = rsa_set_hex_public_key(n, "FFFF");
164 /* Else, check for PublicKeyFile statement and read it */
166 if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
167 xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
169 fp = fopen(fname, "r");
172 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
177 c->rsa = rsa_read_pem_public_key(fp);
181 logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
186 static bool read_ecdsa_private_key(void) {
190 /* Check for PrivateKeyFile statement and read it */
192 if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
193 xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase);
195 fp = fopen(fname, "r");
198 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
200 logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc -n %s generate-ecdsa-keys'.", netname ?: ".");
205 #if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
208 if(fstat(fileno(fp), &s)) {
209 logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
214 if(s.st_mode & ~0100700)
215 logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
218 myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
221 if(!myself->connection->ecdsa)
222 logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
224 return myself->connection->ecdsa;
227 static bool read_invitation_key(void) {
232 ecdsa_free(invitation_key);
233 invitation_key = NULL;
236 xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", confbase);
238 fp = fopen(fname, "r");
241 invitation_key = ecdsa_read_pem_private_key(fp);
244 logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
248 return invitation_key;
251 static bool read_rsa_private_key(void) {
256 /* First, check for simple PrivateKey statement */
258 if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
259 if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
260 logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
264 myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
267 return myself->connection->rsa;
270 /* Else, check for PrivateKeyFile statement and read it */
272 if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
273 xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
275 fp = fopen(fname, "r");
278 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
279 fname, strerror(errno));
284 #if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
287 if(fstat(fileno(fp), &s)) {
288 logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
293 if(s.st_mode & ~0100700)
294 logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
297 myself->connection->rsa = rsa_read_pem_private_key(fp);
300 if(!myself->connection->rsa)
301 logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
303 return myself->connection->rsa;
306 static timeout_t keyexpire_timeout;
308 static void keyexpire_handler(void *data) {
310 timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
313 void regenerate_key(void) {
314 logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
319 Read Subnets from all host config files
321 void load_all_subnets(void) {
326 xasprintf(&dname, "%s" SLASH "hosts", confbase);
327 dir = opendir(dname);
329 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
334 while((ent = readdir(dir))) {
335 if(!check_id(ent->d_name))
338 node_t *n = lookup_node(ent->d_name);
339 #ifdef _DIRENT_HAVE_D_TYPE
340 //if(ent->d_type != DT_REG)
344 splay_tree_t *config_tree;
345 init_configuration(&config_tree);
346 read_config_options(config_tree, ent->d_name);
347 read_host_config(config_tree, ent->d_name);
351 n->name = xstrdup(ent->d_name);
355 for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
358 if(!get_config_subnet(cfg, &s))
361 if((s2 = lookup_subnet(n, s))) {
368 exit_configuration(&config_tree);
374 void load_all_nodes(void) {
379 xasprintf(&dname, "%s" SLASH "hosts", confbase);
380 dir = opendir(dname);
382 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
387 while((ent = readdir(dir))) {
388 if(!check_id(ent->d_name))
391 node_t *n = lookup_node(ent->d_name);
396 n->name = xstrdup(ent->d_name);
404 char *get_name(void) {
407 get_config_string(lookup_config(config_tree, "Name"), &name);
413 char *envname = getenv(name + 1);
415 if(strcmp(name + 1, "HOST")) {
416 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
420 if(gethostname(envname, 32)) {
421 logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
427 name = xstrdup(envname);
428 for(char *c = name; *c; c++)
433 if(!check_id(name)) {
434 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
442 bool setup_myself_reloadable(void) {
448 char *address = NULL;
452 free(scriptinterpreter);
453 scriptinterpreter = NULL;
454 get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
457 free(scriptextension);
458 if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
459 scriptextension = xstrdup("");
461 get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
463 if((space = strchr(proxy, ' ')))
466 if(!strcasecmp(proxy, "none")) {
467 proxytype = PROXY_NONE;
468 } else if(!strcasecmp(proxy, "socks4")) {
469 proxytype = PROXY_SOCKS4;
470 } else if(!strcasecmp(proxy, "socks4a")) {
471 proxytype = PROXY_SOCKS4A;
472 } else if(!strcasecmp(proxy, "socks5")) {
473 proxytype = PROXY_SOCKS5;
474 } else if(!strcasecmp(proxy, "http")) {
475 proxytype = PROXY_HTTP;
476 } else if(!strcasecmp(proxy, "exec")) {
477 proxytype = PROXY_EXEC;
479 logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
489 if(!space || !*space) {
490 logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
493 proxyhost = xstrdup(space);
501 if(space && (space = strchr(space, ' ')))
502 *space++ = 0, proxyport = space;
503 if(space && (space = strchr(space, ' ')))
504 *space++ = 0, proxyuser = space;
505 if(space && (space = strchr(space, ' ')))
506 *space++ = 0, proxypass = space;
507 if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
508 logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
511 proxyhost = xstrdup(proxyhost);
512 proxyport = xstrdup(proxyport);
513 if(proxyuser && *proxyuser)
514 proxyuser = xstrdup(proxyuser);
515 if(proxypass && *proxypass)
516 proxypass = xstrdup(proxypass);
523 if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
524 myself->options |= OPTION_INDIRECT;
526 if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
527 myself->options |= OPTION_TCPONLY;
529 if(myself->options & OPTION_TCPONLY)
530 myself->options |= OPTION_INDIRECT;
532 get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
533 get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
535 memset(&localdiscovery_address, 0, sizeof localdiscovery_address);
536 if(get_config_string(lookup_config(config_tree, "LocalDiscoveryAddress"), &address)) {
537 struct addrinfo *ai = str2addrinfo(address, myport, SOCK_DGRAM);
541 memcpy(&localdiscovery_address, ai->ai_addr, ai->ai_addrlen);
545 if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
546 if(!strcasecmp(rmode, "router"))
547 routing_mode = RMODE_ROUTER;
548 else if(!strcasecmp(rmode, "switch"))
549 routing_mode = RMODE_SWITCH;
550 else if(!strcasecmp(rmode, "hub"))
551 routing_mode = RMODE_HUB;
553 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
559 if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
560 if(!strcasecmp(fmode, "off"))
561 forwarding_mode = FMODE_OFF;
562 else if(!strcasecmp(fmode, "internal"))
563 forwarding_mode = FMODE_INTERNAL;
564 else if(!strcasecmp(fmode, "kernel"))
565 forwarding_mode = FMODE_KERNEL;
567 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
574 get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
576 myself->options |= OPTION_PMTU_DISCOVERY;
579 get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
581 myself->options |= OPTION_CLAMP_MSS;
583 get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
584 get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
585 if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
586 if(!strcasecmp(bmode, "no"))
587 broadcast_mode = BMODE_NONE;
588 else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
589 broadcast_mode = BMODE_MST;
590 else if(!strcasecmp(bmode, "direct"))
591 broadcast_mode = BMODE_DIRECT;
593 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
599 #if !defined(SOL_IP) || !defined(IP_TOS)
600 if(priorityinheritance)
601 logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
604 if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
607 if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
608 if(maxtimeout <= 0) {
609 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
615 if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
616 if(!strcasecmp(afname, "IPv4"))
617 addressfamily = AF_INET;
618 else if(!strcasecmp(afname, "IPv6"))
619 addressfamily = AF_INET6;
620 else if(!strcasecmp(afname, "any"))
621 addressfamily = AF_UNSPEC;
623 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
629 get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
631 if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
634 get_config_int(lookup_config(config_tree, "AutoConnect"), &autoconnect);
636 get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
638 read_invitation_key();
644 Configure node_t myself and set up the local sockets (listen only)
646 static bool setup_myself(void) {
647 char *name, *hostname, *cipher, *digest, *type;
648 char *address = NULL;
650 if(!(name = get_name())) {
651 logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
656 myself->connection = new_connection();
658 myself->connection->name = xstrdup(name);
659 read_host_config(config_tree, name);
661 if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
662 myport = xstrdup("655");
664 xasprintf(&myself->hostname, "MYSELF port %s", myport);
665 myself->connection->hostname = xstrdup(myself->hostname);
667 myself->connection->options = 0;
668 myself->connection->protocol_major = PROT_MAJOR;
669 myself->connection->protocol_minor = PROT_MINOR;
671 myself->options |= PROT_MINOR << 24;
673 get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
675 if(experimental && !read_ecdsa_private_key())
678 if(!read_rsa_private_key())
682 struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
684 if(!ai || !ai->ai_addr)
687 memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
688 sockaddr2str(&sa, NULL, &myport);
691 /* Read in all the subnets specified in the host configuration file */
693 for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
696 if(!get_config_subnet(cfg, &subnet))
699 subnet_add(myself, subnet);
702 /* Check some options */
704 if(!setup_myself_reloadable())
707 get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
708 get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
709 strictsubnets |= tunnelserver;
711 if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
712 if(max_connection_burst <= 0) {
713 logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
718 if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
719 if(udp_rcvbuf <= 0) {
720 logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
725 if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
726 if(udp_sndbuf <= 0) {
727 logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
733 if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
734 if(replaywin_int < 0) {
735 logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
738 replaywin = (unsigned)replaywin_int;
739 sptps_replaywin = replaywin;
742 /* Generate packet encryption key */
744 if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
745 cipher = xstrdup("blowfish");
747 if(!(myself->incipher = cipher_open_by_name(cipher))) {
748 logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
754 timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
756 /* Check if we want to use message authentication codes... */
759 get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
762 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
766 if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
767 digest = xstrdup("sha1");
769 if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
770 logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
778 if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
779 if(myself->incompression < 0 || myself->incompression > 11) {
780 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
784 myself->incompression = 0;
786 myself->connection->outcompression = 0;
790 myself->nexthop = myself;
791 myself->via = myself;
792 myself->status.reachable = true;
793 myself->last_state_change = now.tv_sec;
794 myself->status.sptps = experimental;
808 if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
809 if(!strcasecmp(type, "dummy"))
810 devops = dummy_devops;
811 else if(!strcasecmp(type, "raw_socket"))
812 devops = raw_socket_devops;
813 else if(!strcasecmp(type, "multicast"))
814 devops = multicast_devops;
816 else if(!strcasecmp(type, "uml"))
820 else if(!strcasecmp(type, "vde"))
829 io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
833 if(!do_detach && getenv("LISTEN_FDS")) {
837 listen_sockets = atoi(getenv("LISTEN_FDS"));
839 unsetenv("LISTEN_FDS");
842 if(listen_sockets > MAXSOCKETS) {
843 logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
847 for(int i = 0; i < listen_sockets; i++) {
849 if(getsockname(i + 3, &sa.sa, &salen) < 0) {
850 logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
855 fcntl(i + 3, F_SETFD, FD_CLOEXEC);
858 int udp_fd = setup_vpn_in_socket(&sa);
862 io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
863 io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
865 if(debug_level >= DEBUG_CONNECTIONS) {
866 hostname = sockaddr2hostname(&sa);
867 logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
871 memcpy(&listen_socket[i].sa, &sa, salen);
875 config_t *cfg = lookup_config(config_tree, "BindToAddress");
878 get_config_string(cfg, &address);
880 cfg = lookup_config_next(config_tree, cfg);
885 char *space = strchr(address, ' ');
891 if(!strcmp(address, "*"))
895 struct addrinfo *ai, hint = {0};
896 hint.ai_family = addressfamily;
897 hint.ai_socktype = SOCK_STREAM;
898 hint.ai_protocol = IPPROTO_TCP;
899 hint.ai_flags = AI_PASSIVE;
901 int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
905 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
909 for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
910 if(listen_sockets >= MAXSOCKETS) {
911 logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
915 int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
920 int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
927 io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
928 io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
930 if(debug_level >= DEBUG_CONNECTIONS) {
931 hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
932 logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
936 memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
944 if(!listen_sockets) {
945 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
949 last_config_check = now.tv_sec;
957 bool setup_network(void) {
964 if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
965 if(pinginterval < 1) {
966 pinginterval = 86400;
971 if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
973 if(pingtimeout < 1 || pingtimeout > pinginterval)
974 pingtimeout = pinginterval;
976 if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
977 maxoutbufsize = 10 * MTU;
985 /* Run tinc-up script to further initialize the tap interface */
987 char *envp[5] = {NULL};
988 xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
989 xasprintf(&envp[1], "DEVICE=%s", device ? : "");
990 xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
991 xasprintf(&envp[3], "NAME=%s", myself->name);
993 execute_script("tinc-up", envp);
995 for(int i = 0; i < 4; i++)
998 /* Run subnet-up scripts for our own subnets */
1000 subnet_update(myself, NULL, true);
1006 close all open network connections
1008 void close_network_connections(void) {
1009 for(list_node_t *node = connection_list->head, *next; node; node = next) {
1011 connection_t *c = node->data;
1012 /* Keep control connections open until the end, so they know when we really terminated */
1013 if(c->status.control)
1016 terminate_connection(c, false);
1019 list_delete_list(outgoing_list);
1021 if(myself && myself->connection) {
1022 subnet_update(myself, NULL, false);
1023 terminate_connection(myself->connection, false);
1024 free_connection(myself->connection);
1027 for(int i = 0; i < listen_sockets; i++) {
1028 io_del(&listen_socket[i].tcp);
1029 io_del(&listen_socket[i].udp);
1030 close(listen_socket[i].tcp.fd);
1031 close(listen_socket[i].udp.fd);
1034 char *envp[5] = {NULL};
1035 xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
1036 xasprintf(&envp[1], "DEVICE=%s", device ? : "");
1037 xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
1038 xasprintf(&envp[3], "NAME=%s", myself->name);
1046 execute_script("tinc-down", envp);
1048 if(myport) free(myport);
1050 for(int i = 0; i < 4; i++)