3 Copyright (C) 1998-2005 Ivo Timmermans,
4 2000-2014 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"
48 static io_t device_io;
50 bool device_standby = false;
56 proxytype_t proxytype;
58 bool disablebuggypeers;
60 char *scriptinterpreter;
61 char *scriptextension;
63 bool node_read_ecdsa_public_key(node_t *n) {
64 if(ecdsa_active(n->ecdsa))
67 splay_tree_t *config_tree;
72 init_configuration(&config_tree);
73 if(!read_host_config(config_tree, n->name))
76 /* First, check for simple Ed25519PublicKey statement */
78 if(get_config_string(lookup_config(config_tree, "Ed25519PublicKey"), &p)) {
79 n->ecdsa = ecdsa_set_base64_public_key(p);
84 /* Else, check for Ed25519PublicKeyFile statement and read it */
86 if(!get_config_string(lookup_config(config_tree, "Ed25519PublicKeyFile"), &pubname))
87 xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
89 fp = fopen(pubname, "r");
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 Ed25519PublicKey statement */
119 if(get_config_string(lookup_config(c->config_tree, "Ed25519PublicKey"), &p)) {
120 c->ecdsa = ecdsa_set_base64_public_key(p);
125 /* Else, check for Ed25519PublicKeyFile statement and read it */
127 if(!get_config_string(lookup_config(c->config_tree, "Ed25519PublicKeyFile"), &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 Ed25519 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 Ed25519 public key file `%s' failed.", fname);
148 #ifndef DISABLE_LEGACY
149 bool read_rsa_public_key(connection_t *c) {
150 if(ecdsa_active(c->ecdsa))
157 /* First, check for simple PublicKey statement */
159 if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
160 c->rsa = rsa_set_hex_public_key(n, "FFFF");
165 /* Else, check for PublicKeyFile statement and read it */
167 if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
168 xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
170 fp = fopen(fname, "r");
173 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
178 c->rsa = rsa_read_pem_public_key(fp);
182 logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
188 static bool read_ecdsa_private_key(void) {
192 /* Check for PrivateKeyFile statement and read it */
194 if(!get_config_string(lookup_config(config_tree, "Ed25519PrivateKeyFile"), &fname))
195 xasprintf(&fname, "%s" SLASH "ed25519_key.priv", confbase);
197 fp = fopen(fname, "r");
200 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading Ed25519 private key file `%s': %s", fname, strerror(errno));
202 logger(DEBUG_ALWAYS, LOG_INFO, "Create an Ed25519 keypair with `tinc -n %s generate-ed25519-keys'.", netname ?: ".");
207 #if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
210 if(fstat(fileno(fp), &s)) {
211 logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat Ed25519 private key file `%s': %s'", fname, strerror(errno));
216 if(s.st_mode & ~0100700)
217 logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for Ed25519 private key file `%s'!", fname);
220 myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
223 if(!myself->connection->ecdsa)
224 logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
226 return myself->connection->ecdsa;
229 static bool read_invitation_key(void) {
234 ecdsa_free(invitation_key);
235 invitation_key = NULL;
238 xasprintf(&fname, "%s" SLASH "invitations" SLASH "ed25519_key.priv", confbase);
240 fp = fopen(fname, "r");
243 invitation_key = ecdsa_read_pem_private_key(fp);
246 logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
250 return invitation_key;
253 #ifndef DISABLE_LEGACY
254 static bool read_rsa_private_key(void) {
259 /* First, check for simple PrivateKey statement */
261 if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
262 if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
263 logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
267 myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
270 return myself->connection->rsa;
273 /* Else, check for PrivateKeyFile statement and read it */
275 if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
276 xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
278 fp = fopen(fname, "r");
281 logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
282 fname, strerror(errno));
284 logger(DEBUG_ALWAYS, LOG_INFO, "Create an RSA keypair with `tinc -n %s generate-rsa-keys'.", netname ?: ".");
289 #if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
292 if(fstat(fileno(fp), &s)) {
293 logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
298 if(s.st_mode & ~0100700)
299 logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
302 myself->connection->rsa = rsa_read_pem_private_key(fp);
305 if(!myself->connection->rsa)
306 logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
308 return myself->connection->rsa;
312 static timeout_t keyexpire_timeout;
314 static void keyexpire_handler(void *data) {
316 timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
319 void regenerate_key(void) {
320 logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
322 for splay_each(node_t, n, node_tree)
323 n->status.validkey_in = false;
327 Read Subnets from all host config files
329 void load_all_subnets(void) {
334 xasprintf(&dname, "%s" SLASH "hosts", confbase);
335 dir = opendir(dname);
337 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
342 while((ent = readdir(dir))) {
343 if(!check_id(ent->d_name))
346 node_t *n = lookup_node(ent->d_name);
347 #ifdef _DIRENT_HAVE_D_TYPE
348 //if(ent->d_type != DT_REG)
352 splay_tree_t *config_tree;
353 init_configuration(&config_tree);
354 read_config_options(config_tree, ent->d_name);
355 read_host_config(config_tree, ent->d_name);
359 n->name = xstrdup(ent->d_name);
363 for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
366 if(!get_config_subnet(cfg, &s))
369 if((s2 = lookup_subnet(n, s))) {
376 exit_configuration(&config_tree);
382 void load_all_nodes(void) {
387 xasprintf(&dname, "%s" SLASH "hosts", confbase);
388 dir = opendir(dname);
390 logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
395 while((ent = readdir(dir))) {
396 if(!check_id(ent->d_name))
399 node_t *n = lookup_node(ent->d_name);
404 n->name = xstrdup(ent->d_name);
412 char *get_name(void) {
416 get_config_string(lookup_config(config_tree, "Name"), &name);
421 returned_name = replace_name(name);
423 return returned_name;
426 bool setup_myself_reloadable(void) {
435 free(scriptinterpreter);
436 scriptinterpreter = NULL;
437 get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
440 free(scriptextension);
441 if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
442 scriptextension = xstrdup("");
444 get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
446 if((space = strchr(proxy, ' ')))
449 if(!strcasecmp(proxy, "none")) {
450 proxytype = PROXY_NONE;
451 } else if(!strcasecmp(proxy, "socks4")) {
452 proxytype = PROXY_SOCKS4;
453 } else if(!strcasecmp(proxy, "socks4a")) {
454 proxytype = PROXY_SOCKS4A;
455 } else if(!strcasecmp(proxy, "socks5")) {
456 proxytype = PROXY_SOCKS5;
457 } else if(!strcasecmp(proxy, "http")) {
458 proxytype = PROXY_HTTP;
459 } else if(!strcasecmp(proxy, "exec")) {
460 proxytype = PROXY_EXEC;
462 logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
472 if(!space || !*space) {
473 logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
476 proxyhost = xstrdup(space);
484 if(space && (space = strchr(space, ' ')))
485 *space++ = 0, proxyport = space;
486 if(space && (space = strchr(space, ' ')))
487 *space++ = 0, proxyuser = space;
488 if(space && (space = strchr(space, ' ')))
489 *space++ = 0, proxypass = space;
490 if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
491 logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
494 proxyhost = xstrdup(proxyhost);
495 proxyport = xstrdup(proxyport);
496 if(proxyuser && *proxyuser)
497 proxyuser = xstrdup(proxyuser);
498 if(proxypass && *proxypass)
499 proxypass = xstrdup(proxypass);
506 if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
507 myself->options |= OPTION_INDIRECT;
509 if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
510 myself->options |= OPTION_TCPONLY;
512 if(myself->options & OPTION_TCPONLY)
513 myself->options |= OPTION_INDIRECT;
515 get_config_bool(lookup_config(config_tree, "UDPDiscovery"), &udp_discovery);
516 get_config_int(lookup_config(config_tree, "UDPDiscoveryKeepaliveInterval"), &udp_discovery_keepalive_interval);
517 get_config_int(lookup_config(config_tree, "UDPDiscoveryInterval"), &udp_discovery_interval);
518 get_config_int(lookup_config(config_tree, "UDPDiscoveryTimeout"), &udp_discovery_timeout);
520 get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
521 get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
523 if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
524 if(!strcasecmp(rmode, "router"))
525 routing_mode = RMODE_ROUTER;
526 else if(!strcasecmp(rmode, "switch"))
527 routing_mode = RMODE_SWITCH;
528 else if(!strcasecmp(rmode, "hub"))
529 routing_mode = RMODE_HUB;
531 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
537 if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
538 if(!strcasecmp(fmode, "off"))
539 forwarding_mode = FMODE_OFF;
540 else if(!strcasecmp(fmode, "internal"))
541 forwarding_mode = FMODE_INTERNAL;
542 else if(!strcasecmp(fmode, "kernel"))
543 forwarding_mode = FMODE_KERNEL;
545 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
552 get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
554 myself->options |= OPTION_PMTU_DISCOVERY;
557 get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
559 myself->options |= OPTION_CLAMP_MSS;
561 get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
562 get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
563 if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
564 if(!strcasecmp(bmode, "no"))
565 broadcast_mode = BMODE_NONE;
566 else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
567 broadcast_mode = BMODE_MST;
568 else if(!strcasecmp(bmode, "direct"))
569 broadcast_mode = BMODE_DIRECT;
571 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
577 const char* const DEFAULT_BROADCAST_SUBNETS[] = { "ff:ff:ff:ff:ff:ff", "255.255.255.255", "224.0.0.0/4", "ff00::/8" };
578 for (size_t i = 0; i < sizeof(DEFAULT_BROADCAST_SUBNETS) / sizeof(*DEFAULT_BROADCAST_SUBNETS); i++) {
579 subnet_t *s = new_subnet();
580 if (!str2net(s, DEFAULT_BROADCAST_SUBNETS[i]))
584 for (config_t* cfg = lookup_config(config_tree, "BroadcastSubnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
586 if (!get_config_subnet(cfg, &s))
591 #if !defined(SOL_IP) || !defined(IP_TOS)
592 if(priorityinheritance)
593 logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
596 if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
599 if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
600 if(maxtimeout <= 0) {
601 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
607 if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
608 if(!strcasecmp(afname, "IPv4"))
609 addressfamily = AF_INET;
610 else if(!strcasecmp(afname, "IPv6"))
611 addressfamily = AF_INET6;
612 else if(!strcasecmp(afname, "any"))
613 addressfamily = AF_UNSPEC;
615 logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
621 get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
623 if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
626 config_t *cfg = lookup_config(config_tree, "AutoConnect");
628 if(!get_config_bool(cfg, &autoconnect)) {
629 // Some backwards compatibility with when this option was an int
631 get_config_int(cfg, &val);
636 get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
638 read_invitation_key();
644 Add listening sockets.
646 static bool add_listen_address(char *address, bool bindto) {
650 char *space = strchr(address, ' ');
656 if(!strcmp(address, "*"))
660 struct addrinfo *ai, hint = {0};
661 hint.ai_family = addressfamily;
662 hint.ai_socktype = SOCK_STREAM;
663 hint.ai_protocol = IPPROTO_TCP;
664 hint.ai_flags = AI_PASSIVE;
666 #ifdef HAVE_DECL_RES_INIT
669 int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
673 logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
677 for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
678 // Ignore duplicate addresses
681 for(int i = 0; i < listen_sockets; i++)
682 if(!memcmp(&listen_socket[i].sa, aip->ai_addr, aip->ai_addrlen)) {
690 if(listen_sockets >= MAXSOCKETS) {
691 logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
695 int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
700 int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
707 io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
708 io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
710 if(debug_level >= DEBUG_CONNECTIONS) {
711 char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
712 logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
716 listen_socket[listen_sockets].bindto = bindto;
717 memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
725 void device_enable(void) {
729 /* Run tinc-up script to further initialize the tap interface */
731 char *envp[5] = {NULL};
732 xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
733 xasprintf(&envp[1], "DEVICE=%s", device ? : "");
734 xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
735 xasprintf(&envp[3], "NAME=%s", myname);
737 execute_script("tinc-up", envp);
739 for(int i = 0; i < 4; i++)
743 void device_disable(void) {
744 char *envp[5] = {NULL};
745 xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
746 xasprintf(&envp[1], "DEVICE=%s", device ? : "");
747 xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
748 xasprintf(&envp[3], "NAME=%s", myname);
750 execute_script("tinc-down", envp);
752 for(int i = 0; i < 4; i++)
760 Configure node_t myself and set up the local sockets (listen only)
762 static bool setup_myself(void) {
763 char *name, *hostname, *cipher, *digest, *type;
764 char *address = NULL;
765 bool port_specified = false;
767 if(!(name = get_name())) {
768 logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
772 myname = xstrdup(name);
774 myself->connection = new_connection();
776 myself->connection->name = xstrdup(name);
777 read_host_config(config_tree, name);
779 if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
780 myport = xstrdup("655");
782 port_specified = true;
784 myself->connection->options = 0;
785 myself->connection->protocol_major = PROT_MAJOR;
786 myself->connection->protocol_minor = PROT_MINOR;
788 myself->options |= PROT_MINOR << 24;
790 #ifdef DISABLE_LEGACY
791 experimental = read_ecdsa_private_key();
793 logger(DEBUG_ALWAYS, LOG_ERR, "No private key available, cannot start tinc!");
797 if(!get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental)) {
798 experimental = read_ecdsa_private_key();
800 logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
802 if(experimental && !read_ecdsa_private_key())
806 if(!read_rsa_private_key()) {
808 logger(DEBUG_ALWAYS, LOG_WARNING, "Support for legacy protocol disabled.");
810 logger(DEBUG_ALWAYS, LOG_ERR, "No private keys available, cannot start tinc!");
816 /* Ensure myport is numeric */
819 struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
821 if(!ai || !ai->ai_addr)
824 memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
825 sockaddr2str(&sa, NULL, &myport);
828 /* Read in all the subnets specified in the host configuration file */
830 for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
833 if(!get_config_subnet(cfg, &subnet))
836 subnet_add(myself, subnet);
839 /* Check some options */
841 if(!setup_myself_reloadable())
844 get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
845 get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
846 strictsubnets |= tunnelserver;
848 if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
849 if(max_connection_burst <= 0) {
850 logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
855 if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
856 if(udp_rcvbuf <= 0) {
857 logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
862 if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
863 if(udp_sndbuf <= 0) {
864 logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
870 if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
871 if(replaywin_int < 0) {
872 logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
875 replaywin = (unsigned)replaywin_int;
876 sptps_replaywin = replaywin;
879 #ifndef DISABLE_LEGACY
880 /* Generate packet encryption key */
882 if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
883 cipher = xstrdup("blowfish");
885 if(!strcasecmp(cipher, "none")) {
886 myself->incipher = NULL;
887 } else if(!(myself->incipher = cipher_open_by_name(cipher))) {
888 logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
894 timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
896 /* Check if we want to use message authentication codes... */
899 get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
902 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
906 if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
907 digest = xstrdup("sha1");
909 if(!strcasecmp(digest, "none")) {
910 myself->indigest = NULL;
911 } else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
912 logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
921 if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
922 if(myself->incompression < 0 || myself->incompression > 11) {
923 logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
927 myself->incompression = 0;
929 myself->connection->outcompression = 0;
933 myself->nexthop = myself;
934 myself->via = myself;
935 myself->status.reachable = true;
936 myself->last_state_change = now.tv_sec;
937 myself->status.sptps = experimental;
951 if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
952 if(!strcasecmp(type, "dummy"))
953 devops = dummy_devops;
954 else if(!strcasecmp(type, "raw_socket"))
955 devops = raw_socket_devops;
956 else if(!strcasecmp(type, "multicast"))
957 devops = multicast_devops;
959 else if(!strcasecmp(type, "uml"))
963 else if(!strcasecmp(type, "vde"))
968 get_config_bool(lookup_config(config_tree, "DeviceStandby"), &device_standby);
974 io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
978 if(!do_detach && getenv("LISTEN_FDS")) {
982 listen_sockets = atoi(getenv("LISTEN_FDS"));
984 unsetenv("LISTEN_FDS");
987 if(listen_sockets > MAXSOCKETS) {
988 logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
992 for(int i = 0; i < listen_sockets; i++) {
994 if(getsockname(i + 3, &sa.sa, &salen) < 0) {
995 logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(sockerrno));
1000 fcntl(i + 3, F_SETFD, FD_CLOEXEC);
1003 int udp_fd = setup_vpn_in_socket(&sa);
1007 io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
1008 io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
1010 if(debug_level >= DEBUG_CONNECTIONS) {
1011 hostname = sockaddr2hostname(&sa);
1012 logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
1016 memcpy(&listen_socket[i].sa, &sa, salen);
1022 for(config_t *cfg = lookup_config(config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
1024 get_config_string(cfg, &address);
1025 if(!add_listen_address(address, true))
1029 for(config_t *cfg = lookup_config(config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
1031 get_config_string(cfg, &address);
1032 if(!add_listen_address(address, false))
1037 if(!add_listen_address(address, NULL))
1041 if(!listen_sockets) {
1042 logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
1046 /* If no Port option was specified, set myport to the port used by the first listening socket. */
1048 if(!port_specified || atoi(myport) == 0) {
1050 socklen_t salen = sizeof sa;
1051 if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
1053 sockaddr2str(&sa, NULL, &myport);
1055 myport = xstrdup("655");
1059 xasprintf(&myself->hostname, "MYSELF port %s", myport);
1060 myself->connection->hostname = xstrdup(myself->hostname);
1064 last_config_check = now.tv_sec;
1072 bool setup_network(void) {
1079 if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
1080 if(pinginterval < 1) {
1081 pinginterval = 86400;
1086 if(!get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
1088 if(pingtimeout < 1 || pingtimeout > pinginterval)
1089 pingtimeout = pinginterval;
1091 if(!get_config_int(lookup_config(config_tree, "MaxOutputBufferSize"), &maxoutbufsize))
1092 maxoutbufsize = 10 * MTU;
1100 if (!device_standby)
1103 /* Run subnet-up scripts for our own subnets */
1105 subnet_update(myself, NULL, true);
1111 close all open network connections
1113 void close_network_connections(void) {
1114 for(list_node_t *node = connection_list->head, *next; node; node = next) {
1116 connection_t *c = node->data;
1117 /* Keep control connections open until the end, so they know when we really terminated */
1118 if(c->status.control)
1121 terminate_connection(c, false);
1125 list_delete_list(outgoing_list);
1127 if(myself && myself->connection) {
1128 subnet_update(myself, NULL, false);
1129 terminate_connection(myself->connection, false);
1130 free_connection(myself->connection);
1133 for(int i = 0; i < listen_sockets; i++) {
1134 io_del(&listen_socket[i].tcp);
1135 io_del(&listen_socket[i].udp);
1136 close(listen_socket[i].tcp.fd);
1137 close(listen_socket[i].udp.fd);
1146 if (!device_standby)
1159 free(scriptextension);
1160 free(scriptinterpreter);