/*
net_setup.c -- Setup.
- Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2002 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1998-2005 Ivo Timmermans,
+ 2000-2021 Guus Sliepen <guus@tinc-vpn.org>
+ 2006 Scott Lamb <slamb@slamb.org>
+ 2010 Brandon Black <blblack@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: net_setup.c,v 1.1.2.23 2002/09/04 13:48:52 guus Exp $
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#include "config.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#ifdef HAVE_NETINET_IN_SYSTM_H
- #include <netinet/in_systm.h>
-#endif
-#ifdef HAVE_NETINET_IP_H
- #include <netinet/ip.h>
-#endif
-#ifdef HAVE_NETINET_TCP_H
- #include <netinet/tcp.h>
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <signal.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <syslog.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-/* SunOS really wants sys/socket.h BEFORE net/if.h,
- and FreeBSD wants these lines below the rest. */
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <net/if.h>
-
-#include <openssl/pem.h>
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-
-#include <utils.h>
-#include <xalloc.h>
-#include <avl_tree.h>
-#include <list.h>
+#include "system.h"
+#include "cipher.h"
+#include "conf_net.h"
#include "conf.h"
#include "connection.h"
-#include "meta.h"
+#include "compression.h"
+#include "control.h"
+#include "device.h"
+#include "digest.h"
+#include "ecdsa.h"
+#include "graph.h"
+#include "logger.h"
+#include "names.h"
#include "net.h"
#include "netutl.h"
#include "process.h"
#include "protocol.h"
-#include "subnet.h"
-#include "graph.h"
-#include "process.h"
#include "route.h"
-#include "device.h"
-#include "event.h"
+#include "script.h"
+#include "subnet.h"
+#include "utils.h"
+#include "xalloc.h"
+#include "keys.h"
-#include "system.h"
+#ifdef HAVE_MINIUPNPC
+#include "upnp.h"
+#endif
char *myport;
+static io_t device_io;
+devops_t devops;
+bool device_standby = false;
+
+char *proxyhost = NULL;
+char *proxyport = NULL;
+char *proxyuser = NULL;
+char *proxypass = NULL;
+
+proxytype_t proxytype;
+bool autoconnect;
+bool disablebuggypeers;
+
+char *scriptinterpreter;
+char *scriptextension;
+
+bool node_read_ecdsa_public_key(node_t *n) {
+ if(ecdsa_active(n->ecdsa)) {
+ return true;
+ }
+
+ FILE *fp;
+ char *pubname = NULL;
+ char *p;
+
+ splay_tree_t config;
+ init_configuration(&config);
+
+ if(!read_host_config(&config, n->name, true)) {
+ goto exit;
+ }
+
+ /* First, check for simple Ed25519PublicKey statement */
+
+ if(get_config_string(lookup_config(&config, "Ed25519PublicKey"), &p)) {
+ n->ecdsa = ecdsa_set_base64_public_key(p);
+ free(p);
+ goto exit;
+ }
+
+ /* Else, check for Ed25519PublicKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(&config, "Ed25519PublicKeyFile"), &pubname)) {
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
+ }
+
+ fp = fopen(pubname, "r");
+
+ if(!fp) {
+ goto exit;
+ }
+
+ n->ecdsa = ecdsa_read_pem_public_key(fp);
+ fclose(fp);
+
+exit:
+ splay_empty_tree(&config);
+ free(pubname);
+ return n->ecdsa;
+}
+
+static bool read_invitation_key(void) {
+ FILE *fp;
+ char fname[PATH_MAX];
+
+ if(invitation_key) {
+ ecdsa_free(invitation_key);
+ invitation_key = NULL;
+ }
+
+ snprintf(fname, sizeof(fname), "%s" SLASH "invitations" SLASH "ed25519_key.priv", confbase);
+
+ fp = fopen(fname, "r");
+
+ if(fp) {
+ invitation_key = ecdsa_read_pem_private_key(fp);
+ fclose(fp);
+
+ if(!invitation_key) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading Ed25519 private key file `%s' failed", fname);
+ }
+ }
+
+ return invitation_key;
+}
+
+#ifndef DISABLE_LEGACY
+static timeout_t keyexpire_timeout;
+
+static void keyexpire_handler(void *data) {
+ regenerate_key();
+ timeout_set(data, &(struct timeval) {
+ keylifetime, rand() % 100000
+ });
+}
+#endif
+
+void regenerate_key(void) {
+ logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
+ send_key_changed();
+
+ for splay_each(node_t, n, &node_tree) {
+ n->status.validkey_in = false;
+ }
+}
+
+void load_all_nodes(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char dname[PATH_MAX];
+
+ snprintf(dname, sizeof(dname), "%s" SLASH "hosts", confbase);
+ dir = opendir(dname);
+
+ if(!dir) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ return;
+ }
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name)) {
+ continue;
+ }
+
+ node_t *n = lookup_node(ent->d_name);
+
+ splay_tree_t config;
+ init_configuration(&config);
+ read_config_options(&config, ent->d_name);
+ read_host_config(&config, ent->d_name, true);
+
+ if(!n) {
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ if(strictsubnets) {
+ for(config_t *cfg = lookup_config(&config, "Subnet"); cfg; cfg = lookup_config_next(&config, cfg)) {
+ subnet_t *s, *s2;
+
+ if(!get_config_subnet(cfg, &s)) {
+ continue;
+ }
+
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ free(s);
+ } else {
+ subnet_add(n, s);
+ }
+ }
+ }
+
+ if(lookup_config(&config, "Address")) {
+ n->status.has_address = true;
+ }
+
+ splay_empty_tree(&config);
+ }
+
+ closedir(dir);
+}
+
+char *get_name(void) {
+ char *name = NULL;
+ char *returned_name;
+
+ get_config_string(lookup_config(&config_tree, "Name"), &name);
+
+ if(!name) {
+ return NULL;
+ }
+
+ returned_name = replace_name(name);
+ free(name);
+ return returned_name;
+}
+
+bool setup_myself_reloadable(void) {
+ free(scriptinterpreter);
+ scriptinterpreter = NULL;
+
+ get_config_string(lookup_config(&config_tree, "ScriptsInterpreter"), &scriptinterpreter);
+
+ free(scriptextension);
+
+ if(!get_config_string(lookup_config(&config_tree, "ScriptsExtension"), &scriptextension)) {
+ scriptextension = xstrdup("");
+ }
+
+ char *proxy = NULL;
+
+ get_config_string(lookup_config(&config_tree, "Proxy"), &proxy);
+
+ if(proxy) {
+ char *space;
+
+ if((space = strchr(proxy, ' '))) {
+ *space++ = 0;
+ }
+
+ if(!strcasecmp(proxy, "none")) {
+ proxytype = PROXY_NONE;
+ } else if(!strcasecmp(proxy, "socks4")) {
+ proxytype = PROXY_SOCKS4;
+ } else if(!strcasecmp(proxy, "socks4a")) {
+ proxytype = PROXY_SOCKS4A;
+ } else if(!strcasecmp(proxy, "socks5")) {
+ proxytype = PROXY_SOCKS5;
+ } else if(!strcasecmp(proxy, "http")) {
+ proxytype = PROXY_HTTP;
+ } else if(!strcasecmp(proxy, "exec")) {
+ proxytype = PROXY_EXEC;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
+ free(proxy);
+ return false;
+ }
+
+ free(proxyhost);
+ proxyhost = NULL;
+
+ free(proxyport);
+ proxyport = NULL;
+
+ free(proxyuser);
+ proxyuser = NULL;
+
+ free(proxypass);
+ proxypass = NULL;
+
+ switch(proxytype) {
+ case PROXY_NONE:
+ default:
+ break;
+
+ case PROXY_EXEC:
+ if(!space || !*space) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
+ free(proxy);
+ return false;
+ }
+
+ proxyhost = xstrdup(space);
+ break;
+
+ case PROXY_SOCKS4:
+ case PROXY_SOCKS4A:
+ case PROXY_SOCKS5:
+ case PROXY_HTTP:
+ proxyhost = space;
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxyport = space;
+ }
+
+ if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
+ proxyport = NULL;
+ proxyhost = NULL;
+ free(proxy);
+ return false;
+ }
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxyuser = space;
+ }
+
+ if(space && (space = strchr(space, ' '))) {
+ *space++ = 0, proxypass = space;
+ }
+
+ proxyhost = xstrdup(proxyhost);
+ proxyport = xstrdup(proxyport);
+
+ if(proxyuser && *proxyuser) {
+ proxyuser = xstrdup(proxyuser);
+ }
+
+ if(proxypass && *proxypass) {
+ proxypass = xstrdup(proxypass);
+ }
+
+ break;
+ }
+
+ free(proxy);
+ }
+
+ bool choice;
+
+ if(get_config_bool(lookup_config(&config_tree, "IndirectData"), &choice) && choice) {
+ myself->options |= OPTION_INDIRECT;
+ }
+
+ if(get_config_bool(lookup_config(&config_tree, "TCPOnly"), &choice) && choice) {
+ myself->options |= OPTION_TCPONLY;
+ }
+
+ if(myself->options & OPTION_TCPONLY) {
+ myself->options |= OPTION_INDIRECT;
+ }
+
+ get_config_bool(lookup_config(&config_tree, "UDPDiscovery"), &udp_discovery);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryKeepaliveInterval"), &udp_discovery_keepalive_interval);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryInterval"), &udp_discovery_interval);
+ get_config_int(lookup_config(&config_tree, "UDPDiscoveryTimeout"), &udp_discovery_timeout);
+
+ get_config_int(lookup_config(&config_tree, "MTUInfoInterval"), &mtu_info_interval);
+ get_config_int(lookup_config(&config_tree, "UDPInfoInterval"), &udp_info_interval);
+
+ get_config_bool(lookup_config(&config_tree, "DirectOnly"), &directonly);
+ get_config_bool(lookup_config(&config_tree, "LocalDiscovery"), &localdiscovery);
+
+ char *rmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Mode"), &rmode)) {
+ if(!strcasecmp(rmode, "router")) {
+ routing_mode = RMODE_ROUTER;
+ } else if(!strcasecmp(rmode, "switch")) {
+ routing_mode = RMODE_SWITCH;
+ } else if(!strcasecmp(rmode, "hub")) {
+ routing_mode = RMODE_HUB;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
+ free(rmode);
+ return false;
+ }
+
+ free(rmode);
+ }
+
+ char *fmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Forwarding"), &fmode)) {
+ if(!strcasecmp(fmode, "off")) {
+ forwarding_mode = FMODE_OFF;
+ } else if(!strcasecmp(fmode, "internal")) {
+ forwarding_mode = FMODE_INTERNAL;
+ } else if(!strcasecmp(fmode, "kernel")) {
+ forwarding_mode = FMODE_KERNEL;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
+ free(fmode);
+ return false;
+ }
+
+ free(fmode);
+ }
+
+ choice = !(myself->options & OPTION_TCPONLY);
+ get_config_bool(lookup_config(&config_tree, "PMTUDiscovery"), &choice);
+
+ if(choice) {
+ myself->options |= OPTION_PMTU_DISCOVERY;
+ }
+
+ choice = true;
+ get_config_bool(lookup_config(&config_tree, "ClampMSS"), &choice);
+
+ if(choice) {
+ myself->options |= OPTION_CLAMP_MSS;
+ }
+
+ get_config_bool(lookup_config(&config_tree, "PriorityInheritance"), &priorityinheritance);
+ get_config_bool(lookup_config(&config_tree, "DecrementTTL"), &decrement_ttl);
+
+ char *bmode = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "Broadcast"), &bmode)) {
+ if(!strcasecmp(bmode, "no")) {
+ broadcast_mode = BMODE_NONE;
+ } else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst")) {
+ broadcast_mode = BMODE_MST;
+ } else if(!strcasecmp(bmode, "direct")) {
+ broadcast_mode = BMODE_DIRECT;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
+ free(bmode);
+ return false;
+ }
+
+ free(bmode);
+ }
+
+ /* Delete all broadcast subnets before re-adding them */
+
+ for splay_each(subnet_t, s, &subnet_tree) {
+ if(!s->owner) {
+ splay_delete_node(&subnet_tree, node);
+ }
+ }
+
+ const char *const DEFAULT_BROADCAST_SUBNETS[] = { "ff:ff:ff:ff:ff:ff", "255.255.255.255", "224.0.0.0/4", "ff00::/8" };
+
+ for(size_t i = 0; i < sizeof(DEFAULT_BROADCAST_SUBNETS) / sizeof(*DEFAULT_BROADCAST_SUBNETS); i++) {
+ subnet_t *s = new_subnet();
+
+ if(!str2net(s, DEFAULT_BROADCAST_SUBNETS[i])) {
+ abort();
+ }
+
+ subnet_add(NULL, s);
+ }
+
+ for(config_t *cfg = lookup_config(&config_tree, "BroadcastSubnet"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
+ subnet_t *s;
+
+ if(!get_config_subnet(cfg, &s)) {
+ continue;
+ }
+
+ subnet_add(NULL, s);
+ }
+
+#if !defined(IP_TOS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv4 connections", "PriorityInheritance");
+ }
+
+#endif
+
+#if !defined(IPV6_TCLASS)
+
+ if(priorityinheritance) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "%s not supported on this platform for IPv6 connections", "PriorityInheritance");
+ }
+
+#endif
+
+ if(!get_config_int(lookup_config(&config_tree, "MACExpire"), &macexpire)) {
+ macexpire = 600;
+ }
+
+ if(get_config_int(lookup_config(&config_tree, "MaxTimeout"), &maxtimeout)) {
+ if(maxtimeout <= 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
+ return false;
+ }
+ } else {
+ maxtimeout = 900;
+ }
+
+ char *afname = NULL;
+
+ if(get_config_string(lookup_config(&config_tree, "AddressFamily"), &afname)) {
+ if(!strcasecmp(afname, "IPv4")) {
+ addressfamily = AF_INET;
+ } else if(!strcasecmp(afname, "IPv6")) {
+ addressfamily = AF_INET6;
+ } else if(!strcasecmp(afname, "any")) {
+ addressfamily = AF_UNSPEC;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
+ free(afname);
+ return false;
+ }
+
+ free(afname);
+ }
+
+ get_config_bool(lookup_config(&config_tree, "Hostnames"), &hostnames);
+
+ if(!get_config_int(lookup_config(&config_tree, "KeyExpire"), &keylifetime)) {
+ keylifetime = 3600;
+ }
+
+ if(!get_config_bool(lookup_config(&config_tree, "AutoConnect"), &autoconnect)) {
+ autoconnect = true;
+ }
+
+ get_config_bool(lookup_config(&config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+
+ if(!get_config_int(lookup_config(&config_tree, "InvitationExpire"), &invitation_lifetime)) {
+ invitation_lifetime = 604800; // 1 week
+ }
+
+ read_invitation_key();
+
+ return true;
+}
+
+/*
+ Add listening sockets.
+*/
+static bool add_listen_address(char *address, bool bindto) {
+ char *port = myport;
+
+ if(address) {
+ char *space = strchr(address, ' ');
+
+ if(space) {
+ *space++ = 0;
+ port = space;
+ }
+
+ if(!strcmp(address, "*")) {
+ *address = 0;
+ }
+ }
+
+ struct addrinfo *ai, hint = {0};
+
+ hint.ai_family = addressfamily;
+
+ hint.ai_socktype = SOCK_STREAM;
+
+ hint.ai_protocol = IPPROTO_TCP;
+
+ hint.ai_flags = AI_PASSIVE;
+
+#if HAVE_DECL_RES_INIT
+ res_init();
+
+#endif
+ int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+
+ free(address);
+
+ if(err || !ai) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
+ return false;
+ }
+
+ for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
+ // Ignore duplicate addresses
+ bool found = false;
+
+ for(int i = 0; i < listen_sockets; i++)
+ if(!memcmp(&listen_socket[i].sa, aip->ai_addr, aip->ai_addrlen)) {
+ found = true;
+ break;
+ }
+
+ if(found) {
+ continue;
+ }
+
+ if(listen_sockets >= MAXSOCKETS) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ freeaddrinfo(ai);
+ return false;
+ }
+
+ int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
+
+ if(tcp_fd < 0) {
+ continue;
+ }
+
+ int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+
+ if(udp_fd < 0) {
+ close(tcp_fd);
+ continue;
+ }
+
+ io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
+ io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
+
+ if(debug_level >= DEBUG_CONNECTIONS) {
+ char *hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ free(hostname);
+ }
+
+ listen_socket[listen_sockets].bindto = bindto;
+ memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
+ listen_sockets++;
+ }
+
+ freeaddrinfo(ai);
+ return true;
+}
+
+void device_enable(void) {
+ if(devops.enable) {
+ devops.enable();
+ }
-int read_rsa_public_key(connection_t *c)
-{
- FILE *fp;
- char *fname;
- char *key;
-cp
- if(!c->rsa_key)
- c->rsa_key = RSA_new();
-
- /* First, check for simple PublicKey statement */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &key))
- {
- BN_hex2bn(&c->rsa_key->n, key);
- BN_hex2bn(&c->rsa_key->e, "FFFF");
- free(key);
- return 0;
- }
-
- /* Else, check for PublicKeyFile statement and read it */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
- {
- if(is_safe_path(fname))
- {
- if((fp = fopen(fname, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
- free(fname);
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- if(c->rsa_key)
- return 0; /* Woohoo. */
-
- /* If it fails, try PEM_read_RSA_PUBKEY. */
- if((fp = fopen(fname, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
- free(fname);
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- if(c->rsa_key)
- return 0;
-
- syslog(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
- fname, strerror(errno));
- return -1;
- }
- else
- {
- free(fname);
- return -1;
- }
- }
-
- /* Else, check if a harnessed public key is in the config file */
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- if((fp = fopen(fname, "r")))
- {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- }
-
- free(fname);
-
- if(c->rsa_key)
- return 0;
-
- /* Try again with PEM_read_RSA_PUBKEY. */
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- if((fp = fopen(fname, "r")))
- {
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- }
-
- free(fname);
-
- if(c->rsa_key)
- return 0;
-
- syslog(LOG_ERR, _("No public key for %s specified!"), c->name);
- return -1;
+ /* Run tinc-up script to further initialize the tap interface */
+
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-up", &env);
+ environment_exit(&env);
}
-int read_rsa_private_key(void)
-{
- FILE *fp;
- char *fname, *key;
-cp
- if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key))
- {
- myself->connection->rsa_key = RSA_new();
- BN_hex2bn(&myself->connection->rsa_key->d, key);
- BN_hex2bn(&myself->connection->rsa_key->e, "FFFF");
- free(key);
- return 0;
- }
-
- if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
- asprintf(&fname, "%s/rsa_key.priv", confbase);
-
- if(is_safe_path(fname))
- {
- if((fp = fopen(fname, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA private key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
- free(fname);
- myself->connection->rsa_key = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
- fclose(fp);
- if(!myself->connection->rsa_key)
- {
- syslog(LOG_ERR, _("Reading RSA private key file `%s' failed: %s"),
- fname, strerror(errno));
- return -1;
- }
- return 0;
- }
-
- free(fname);
- return -1;
+void device_disable(void) {
+ environment_t env;
+ environment_init(&env);
+ execute_script("tinc-down", &env);
+ environment_exit(&env);
+
+ if(devops.disable) {
+ devops.disable();
+ }
}
/*
Configure node_t myself and set up the local sockets (listen only)
*/
-int setup_myself(void)
-{
- config_t *cfg;
- subnet_t *subnet;
- char *name, *hostname, *mode, *afname, *cipher, *digest;
- char *address = NULL;
- struct addrinfo hint, *ai, *aip;
- int choice, err;
-cp
- myself = new_node();
- myself->connection = new_connection();
- init_configuration(&myself->connection->config_tree);
-
- asprintf(&myself->hostname, _("MYSELF"));
- asprintf(&myself->connection->hostname, _("MYSELF"));
-
- myself->connection->options = 0;
- myself->connection->protocol_version = PROT_CURRENT;
-
- if(!get_config_string(lookup_config(config_tree, "Name"), &name)) /* Not acceptable */
- {
- syslog(LOG_ERR, _("Name for tinc daemon required!"));
- return -1;
- }
-
- if(check_id(name))
- {
- syslog(LOG_ERR, _("Invalid name for myself!"));
- free(name);
- return -1;
- }
-
- myself->name = name;
- myself->connection->name = xstrdup(name);
-
-cp
- if(read_rsa_private_key())
- return -1;
-
- if(read_connection_config(myself->connection))
- {
- syslog(LOG_ERR, _("Cannot open host configuration file for myself!"));
- return -1;
- }
-
- if(read_rsa_public_key(myself->connection))
- return -1;
-cp
-
- if(!get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport))
- asprintf(&myport, "655");
-
-/* Read in all the subnets specified in the host configuration file */
-
- cfg = lookup_config(myself->connection->config_tree, "Subnet");
-
- while(cfg)
- {
- if(!get_config_subnet(cfg, &subnet))
- return -1;
-
- subnet_add(myself, subnet);
-
- cfg = lookup_config_next(myself->connection->config_tree, cfg);
- }
-
-cp
- /* Check some options */
-
- if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice))
- if(choice)
- myself->options |= OPTION_INDIRECT;
-
- if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice))
- if(choice)
- myself->options |= OPTION_TCPONLY;
-
- if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice))
- if(choice)
- myself->options |= OPTION_INDIRECT;
-
- if(get_config_bool(lookup_config(myself->connection->config_tree, "TCPOnly"), &choice))
- if(choice)
- myself->options |= OPTION_TCPONLY;
-
- if(myself->options & OPTION_TCPONLY)
- myself->options |= OPTION_INDIRECT;
-
- if(get_config_string(lookup_config(config_tree, "Mode"), &mode))
- {
- if(!strcasecmp(mode, "router"))
- routing_mode = RMODE_ROUTER;
- else if (!strcasecmp(mode, "switch"))
- routing_mode = RMODE_SWITCH;
- else if (!strcasecmp(mode, "hub"))
- routing_mode = RMODE_HUB;
- else
- {
- syslog(LOG_ERR, _("Invalid routing mode!"));
- return -1;
- }
- free(mode);
- }
- else
- routing_mode = RMODE_ROUTER;
-
- get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
-#if !defined(SOL_IP) || !defined(IP_TOS)
- if(priorityinheritance)
- syslog(LOG_WARNING, _("PriorityInheritance not supported on this platform"));
+static bool setup_myself(void) {
+ char *name, *hostname, *type;
+ char *address = NULL;
+ bool port_specified = false;
+
+ if(!(name = get_name())) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
+ return false;
+ }
+
+ myname = xstrdup(name);
+ myself = new_node();
+ myself->connection = new_connection();
+ myself->name = name;
+ myself->connection->name = xstrdup(name);
+ read_host_config(&config_tree, name, true);
+
+ if(!get_config_string(lookup_config(&config_tree, "Port"), &myport)) {
+ myport = xstrdup("655");
+ } else {
+ port_specified = true;
+ }
+
+ myself->connection->options = 0;
+ myself->connection->protocol_major = PROT_MAJOR;
+ myself->connection->protocol_minor = PROT_MINOR;
+
+ myself->options |= PROT_MINOR << 24;
+
+#ifdef DISABLE_LEGACY
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+ experimental = myself->connection->ecdsa != NULL;
+
+ if(!experimental) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private key available, cannot start tinc!");
+ return false;
+ }
+
+#else
+
+ if(!get_config_bool(lookup_config(&config_tree, "ExperimentalProtocol"), &experimental)) {
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+ experimental = myself->connection->ecdsa != NULL;
+
+ if(!experimental) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Support for SPTPS disabled.");
+ }
+ } else {
+ if(experimental) {
+ myself->connection->ecdsa = read_ecdsa_private_key(&config_tree, NULL);
+
+ if(!myself->connection->ecdsa) {
+ return false;
+ }
+ }
+ }
+
+ myself->connection->rsa = read_rsa_private_key(&config_tree, NULL);
+
+ if(!myself->connection->rsa) {
+ if(experimental) {
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Support for legacy protocol disabled.");
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "No private keys available, cannot start tinc!");
+ return false;
+ }
+ }
+
+#endif
+
+ /* Ensure myport is numeric */
+
+ if(!atoi(myport)) {
+ struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
+ sockaddr_t sa;
+
+ if(!ai || !ai->ai_addr) {
+ return false;
+ }
+
+ free(myport);
+ memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
+ freeaddrinfo(ai);
+ sockaddr2str(&sa, NULL, &myport);
+ }
+
+ /* Read in all the subnets specified in the host configuration file */
+
+ for(config_t *cfg = lookup_config(&config_tree, "Subnet"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
+ subnet_t *subnet;
+
+ if(!get_config_subnet(cfg, &subnet)) {
+ return false;
+ }
+
+ subnet_add(myself, subnet);
+ }
+
+ /* Check some options */
+
+ if(!setup_myself_reloadable()) {
+ return false;
+ }
+
+ get_config_bool(lookup_config(&config_tree, "StrictSubnets"), &strictsubnets);
+ get_config_bool(lookup_config(&config_tree, "TunnelServer"), &tunnelserver);
+ strictsubnets |= tunnelserver;
+
+ if(get_config_int(lookup_config(&config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
+ if(max_connection_burst <= 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
+ return false;
+ }
+ }
+
+ if(get_config_int(lookup_config(&config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
+ if(udp_rcvbuf < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
+ return false;
+ }
+
+ udp_rcvbuf_warnings = true;
+ }
+
+ if(get_config_int(lookup_config(&config_tree, "UDPSndBuf"), &udp_sndbuf)) {
+ if(udp_sndbuf < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "UDPSndBuf cannot be negative!");
+ return false;
+ }
+
+ udp_sndbuf_warnings = true;
+ }
+
+ get_config_int(lookup_config(&config_tree, "FWMark"), &fwmark);
+#ifndef SO_MARK
+
+ if(fwmark) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "FWMark not supported on this platform!");
+ return false;
+ }
+
+#endif
+
+ int replaywin_int;
+
+ if(get_config_int(lookup_config(&config_tree, "ReplayWindow"), &replaywin_int)) {
+ if(replaywin_int < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
+ return false;
+ }
+
+ replaywin = (unsigned)replaywin_int;
+ sptps_replaywin = replaywin;
+ }
+
+#ifndef DISABLE_LEGACY
+ /* Generate packet encryption key */
+
+ char *cipher;
+
+ if(!get_config_string(lookup_config(&config_tree, "Cipher"), &cipher)) {
+ cipher = xstrdup("aes-256-cbc");
+ }
+
+ if(!strcasecmp(cipher, "none")) {
+ myself->incipher = NULL;
+ } else if(!(myself->incipher = cipher_open_by_name(cipher))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
+ free(cipher);
+ return false;
+ }
+
+ free(cipher);
+
+ timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval) {
+ keylifetime, rand() % 100000
+ });
+
+ /* Check if we want to use message authentication codes... */
+
+ int maclength = 4;
+ get_config_int(lookup_config(&config_tree, "MACLength"), &maclength);
+
+ if(maclength < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus MAC length!");
+ return false;
+ }
+
+ char *digest;
+
+ if(!get_config_string(lookup_config(&config_tree, "Digest"), &digest)) {
+ digest = xstrdup("sha256");
+ }
+
+ if(!strcasecmp(digest, "none")) {
+ myself->indigest = NULL;
+ } else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
+ free(digest);
+ return false;
+ }
+
+ free(digest);
+#endif
+
+ /* Compression */
+ if(get_config_int(lookup_config(&config_tree, "Compression"), &myself->incompression)) {
+ switch(myself->incompression) {
+ case COMPRESS_LZ4:
+#ifdef HAVE_LZ4
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZ4 compression is unavailable on this node.");
+ return false;
+#endif
+
+ case COMPRESS_LZO_HI:
+ case COMPRESS_LZO_LO:
+#ifdef HAVE_LZO
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "LZO compression is unavailable on this node.");
+ return false;
+#endif
+
+ case COMPRESS_ZLIB_9:
+ case COMPRESS_ZLIB_8:
+ case COMPRESS_ZLIB_7:
+ case COMPRESS_ZLIB_6:
+ case COMPRESS_ZLIB_5:
+ case COMPRESS_ZLIB_4:
+ case COMPRESS_ZLIB_3:
+ case COMPRESS_ZLIB_2:
+ case COMPRESS_ZLIB_1:
+#ifdef HAVE_ZLIB
+ break;
+#else
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "ZLIB compression is unavailable on this node.");
+ return false;
+#endif
+
+ case COMPRESS_NONE:
+ break;
+
+ default:
+ logger(DEBUG_ALWAYS, LOG_ERR, "Bogus compression level!");
+ logger(DEBUG_ALWAYS, LOG_ERR, "Compression level %i is unrecognized by this node.", myself->incompression);
+ return false;
+ }
+ } else {
+ myself->incompression = COMPRESS_NONE;
+ }
+
+ myself->connection->outcompression = COMPRESS_NONE;
+
+ /* Done */
+
+ myself->nexthop = myself;
+ myself->via = myself;
+ myself->status.reachable = true;
+ myself->last_state_change = now.tv_sec;
+ myself->status.sptps = experimental;
+ node_add(myself);
+
+ graph();
+
+ load_all_nodes();
+
+ /* Open device */
+
+ devops = os_devops;
+
+ if(get_config_string(lookup_config(&config_tree, "DeviceType"), &type)) {
+ if(!strcasecmp(type, "dummy")) {
+ devops = dummy_devops;
+ } else if(!strcasecmp(type, "raw_socket")) {
+ devops = raw_socket_devops;
+ } else if(!strcasecmp(type, "multicast")) {
+ devops = multicast_devops;
+ }
+
+#ifdef HAVE_SYS_UN_H
+ else if(!strcasecmp(type, "fd")) {
+ devops = fd_devops;
+ }
+
+#endif
+#ifdef ENABLE_UML
+ else if(!strcasecmp(type, "uml")) {
+ devops = uml_devops;
+ }
+
+#endif
+#ifdef ENABLE_VDE
+ else if(!strcasecmp(type, "vde")) {
+ devops = vde_devops;
+ }
+
+#endif
+ free(type);
+ }
+
+ get_config_bool(lookup_config(&config_tree, "DeviceStandby"), &device_standby);
+
+ if(!devops.setup()) {
+ return false;
+ }
+
+ if(device_fd >= 0) {
+ io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
+ }
+
+ /* Open sockets */
+
+ if(!do_detach && getenv("LISTEN_FDS")) {
+ sockaddr_t sa;
+ socklen_t salen;
+
+ listen_sockets = atoi(getenv("LISTEN_FDS"));
+#ifdef HAVE_UNSETENV
+ unsetenv("LISTEN_FDS");
+#endif
+
+ if(listen_sockets > MAXSOCKETS) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
+ return false;
+ }
+
+ for(int i = 0; i < listen_sockets; i++) {
+ salen = sizeof(sa);
+
+ if(getsockname(i + 3, &sa.sa, &salen) < 0) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(sockerrno));
+ return false;
+ }
+
+#ifdef FD_CLOEXEC
+ fcntl(i + 3, F_SETFD, FD_CLOEXEC);
+#endif
+
+ int udp_fd = setup_vpn_in_socket(&sa);
+
+ if(udp_fd < 0) {
+ return false;
+ }
+
+ io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
+ io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
+
+ if(debug_level >= DEBUG_CONNECTIONS) {
+ hostname = sockaddr2hostname(&sa);
+ logger(DEBUG_CONNECTIONS, LOG_NOTICE, "Listening on %s", hostname);
+ free(hostname);
+ }
+
+ memcpy(&listen_socket[i].sa, &sa, salen);
+ }
+ } else {
+ listen_sockets = 0;
+ int cfgs = 0;
+
+ for(config_t *cfg = lookup_config(&config_tree, "BindToAddress"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
+ cfgs++;
+ get_config_string(cfg, &address);
+
+ if(!add_listen_address(address, true)) {
+ return false;
+ }
+ }
+
+ for(config_t *cfg = lookup_config(&config_tree, "ListenAddress"); cfg; cfg = lookup_config_next(&config_tree, cfg)) {
+ cfgs++;
+ get_config_string(cfg, &address);
+
+ if(!add_listen_address(address, false)) {
+ return false;
+ }
+ }
+
+ if(!cfgs)
+ if(!add_listen_address(address, NULL)) {
+ return false;
+ }
+ }
+
+ if(!listen_sockets) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
+ return false;
+ }
+
+ /* If no Port option was specified, set myport to the port used by the first listening socket. */
+
+ if(!port_specified || atoi(myport) == 0) {
+ sockaddr_t sa;
+ socklen_t salen = sizeof(sa);
+
+ if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
+ free(myport);
+ sockaddr2str(&sa, NULL, &myport);
+
+ if(!myport) {
+ myport = xstrdup("655");
+ }
+ }
+ }
+
+ xasprintf(&myself->hostname, "MYSELF port %s", myport);
+ myself->connection->hostname = xstrdup(myself->hostname);
+
+ char *upnp = NULL;
+ get_config_string(lookup_config(&config_tree, "UPnP"), &upnp);
+ bool upnp_tcp = false;
+ bool upnp_udp = false;
+
+ if(upnp) {
+ if(!strcasecmp(upnp, "yes")) {
+ upnp_tcp = upnp_udp = true;
+ } else if(!strcasecmp(upnp, "udponly")) {
+ upnp_udp = true;
+ }
+
+ free(upnp);
+ }
+
+ if(upnp_tcp || upnp_udp) {
+#ifdef HAVE_MINIUPNPC
+ upnp_init(upnp_tcp, upnp_udp);
+#else
+ logger(DEBUG_ALWAYS, LOG_WARNING, "UPnP was requested, but tinc isn't built with miniupnpc support!");
#endif
+ }
- if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
- macexpire= 600;
-
- if(get_config_int(lookup_config(myself->connection->config_tree, "MaxTimeout"), &maxtimeout))
- {
- if(maxtimeout <= 0)
- {
- syslog(LOG_ERR, _("Bogus maximum timeout!"));
- return -1;
- }
- }
- else
- maxtimeout = 900;
-
- if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname))
- {
- if(!strcasecmp(afname, "IPv4"))
- addressfamily = AF_INET;
- else if (!strcasecmp(afname, "IPv6"))
- addressfamily = AF_INET6;
- else if (!strcasecmp(afname, "any"))
- addressfamily = AF_UNSPEC;
- else
- {
- syslog(LOG_ERR, _("Invalid address family!"));
- return -1;
- }
- free(afname);
- }
- else
- addressfamily = AF_INET;
-
- get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
-cp
- /* Generate packet encryption key */
-
- if(get_config_string(lookup_config(myself->connection->config_tree, "Cipher"), &cipher))
- {
- if(!strcasecmp(cipher, "none"))
- {
- myself->cipher = NULL;
- }
- else
- {
- if(!(myself->cipher = EVP_get_cipherbyname(cipher)))
- {
- syslog(LOG_ERR, _("Unrecognized cipher type!"));
- return -1;
- }
- }
- }
- else
- myself->cipher = EVP_bf_cbc();
-
- if(myself->cipher)
- myself->keylength = myself->cipher->key_len + myself->cipher->iv_len;
- else
- myself->keylength = 1;
-
- myself->connection->outcipher = EVP_bf_ofb();
-
- myself->key = (char *)xmalloc(myself->keylength);
- RAND_pseudo_bytes(myself->key, myself->keylength);
-
- if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
- keylifetime = 3600;
-
- keyexpires = now + keylifetime;
-
- /* Check if we want to use message authentication codes... */
-
- if(get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest))
- {
- if(!strcasecmp(digest, "none"))
- {
- myself->digest = NULL;
- }
- else
- {
- if(!(myself->digest = EVP_get_digestbyname(digest)))
- {
- syslog(LOG_ERR, _("Unrecognized digest type!"));
- return -1;
- }
- }
- }
- else
- myself->digest = EVP_sha1();
-
- myself->connection->outdigest = EVP_sha1();
-
- if(get_config_int(lookup_config(myself->connection->config_tree, "MACLength"), &myself->maclength))
- {
- if(myself->digest)
- {
- if(myself->maclength > myself->digest->md_size)
- {
- syslog(LOG_ERR, _("MAC length exceeds size of digest!"));
- return -1;
- }
- else if (myself->maclength < 0)
- {
- syslog(LOG_ERR, _("Bogus MAC length!"));
- return -1;
- }
- }
- }
- else
- myself->maclength = 4;
-
- myself->connection->outmaclength = 0;
-
- /* Compression */
-
- if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"), &myself->compression))
- {
- if(myself->compression < 0 || myself->compression > 9)
- {
- syslog(LOG_ERR, _("Bogus compression level!"));
- return -1;
- }
- }
- else
- myself->compression = 0;
-
- myself->connection->outcompression = 0;
-cp
- /* Done */
-
- myself->nexthop = myself;
- myself->via = myself;
- myself->status.active = 1;
- myself->status.reachable = 1;
- node_add(myself);
-
- graph();
-
-cp
- /* Open sockets */
-
- memset(&hint, 0, sizeof(hint));
-
- get_config_string(lookup_config(config_tree, "BindToAddress"), &address);
-
- hint.ai_family = addressfamily;
- hint.ai_socktype = SOCK_STREAM;
- hint.ai_protocol = IPPROTO_TCP;
- hint.ai_flags = AI_PASSIVE;
-
- if((err = getaddrinfo(address, myport, &hint, &ai)) || !ai)
- {
- syslog(LOG_ERR, _("System call `%s' failed: %s"), "getaddrinfo", gai_strerror(err));
- return -1;
- }
-
- listen_sockets = 0;
-
- for(aip = ai; aip; aip = aip->ai_next)
- {
- if((listen_socket[listen_sockets].tcp = setup_listen_socket((sockaddr_t *)aip->ai_addr)) < 0)
- continue;
-
- if((listen_socket[listen_sockets].udp = setup_vpn_in_socket((sockaddr_t *)aip->ai_addr)) < 0)
- continue;
-
- if(debug_lvl >= DEBUG_CONNECTIONS)
- {
- hostname = sockaddr2hostname((sockaddr_t *)aip->ai_addr);
- syslog(LOG_NOTICE, _("Listening on %s"), hostname);
- free(hostname);
- }
-
- listen_socket[listen_sockets].sa.sa = *aip->ai_addr;
- listen_sockets++;
- }
-
- freeaddrinfo(ai);
-
- if(listen_sockets)
- syslog(LOG_NOTICE, _("Ready"));
- else
- {
- syslog(LOG_ERR, _("Unable to create any listening socket!"));
- return -1;
- }
-cp
- return 0;
+ /* Done. */
+
+ last_config_check = now.tv_sec;
+
+ return true;
}
/*
- setup all initial network connections
+ initialize network
*/
-int setup_network_connections(void)
-{
- char *envp[4];
- int i;
-cp
- now = time(NULL);
-
- init_connections();
- init_subnets();
- init_nodes();
- init_edges();
- init_events();
- init_requests();
-
- if(get_config_int(lookup_config(config_tree, "PingTimeout"), &pingtimeout))
- {
- if(pingtimeout < 1)
- {
- pingtimeout = 86400;
- }
- }
- else
- pingtimeout = 60;
-
- if(setup_device() < 0)
- return -1;
-
- /* Run tinc-up script to further initialize the tap interface */
- asprintf(&envp[0], "NETNAME=%s", netname?netname:"");
- asprintf(&envp[1], "DEVICE=%s", device?device:"");
- asprintf(&envp[2], "INTERFACE=%s", interface?interface:"");
- envp[3] = NULL;
-
- execute_script("tinc-up", envp);
-
- for(i = 0; i < 4; i++)
- free(envp[i]);
-
- if(setup_myself() < 0)
- return -1;
-
- try_outgoing_connections();
-cp
- return 0;
+bool setup_network(void) {
+ init_connections();
+ init_subnets();
+
+ if(get_config_int(lookup_config(&config_tree, "PingInterval"), &pinginterval)) {
+ if(pinginterval < 1) {
+ pinginterval = 86400;
+ }
+ } else {
+ pinginterval = 60;
+ }
+
+ if(!get_config_int(lookup_config(&config_tree, "PingTimeout"), &pingtimeout)) {
+ pingtimeout = 5;
+ }
+
+ if(pingtimeout < 1 || pingtimeout > pinginterval) {
+ pingtimeout = pinginterval;
+ }
+
+ if(!get_config_int(lookup_config(&config_tree, "MaxOutputBufferSize"), &maxoutbufsize)) {
+ maxoutbufsize = 10 * MTU;
+ }
+
+ if(!setup_myself()) {
+ return false;
+ }
+
+ if(!init_control()) {
+ return false;
+ }
+
+ if(!device_standby) {
+ device_enable();
+ }
+
+ /* Run subnet-up scripts for our own subnets */
+
+ subnet_update(myself, NULL, true);
+
+ return true;
}
/*
close all open network connections
*/
-void close_network_connections(void)
-{
- avl_node_t *node, *next;
- connection_t *c;
- char *envp[4];
- int i;
-cp
- for(node = connection_tree->head; node; node = next)
- {
- next = node->next;
- c = (connection_t *)node->data;
- if(c->outgoing)
- free(c->outgoing->name), free(c->outgoing), c->outgoing = NULL;
- terminate_connection(c, 0);
- }
-
- if(myself && myself->connection)
- terminate_connection(myself->connection, 0);
-
- for(i = 0; i < listen_sockets; i++)
- {
- close(listen_socket[i].tcp);
- close(listen_socket[i].udp);
- }
-
- exit_requests();
- exit_events();
- exit_edges();
- exit_subnets();
- exit_nodes();
- exit_connections();
-
- asprintf(&envp[0], "NETNAME=%s", netname?netname:"");
- asprintf(&envp[1], "DEVICE=%s", device?device:"");
- asprintf(&envp[2], "INTERFACE=%s", interface?interface:"");
- envp[3] = NULL;
-
- execute_script("tinc-down", envp);
-
- for(i = 0; i < 4; i++)
- free(envp[i]);
-
- close_device();
-cp
- return;
+void close_network_connections(void) {
+ for(list_node_t *node = connection_list.head, *next; node; node = next) {
+ next = node->next;
+ connection_t *c = node->data;
+
+ /* Keep control connections open until the end, so they know when we really terminated */
+ if(c->status.control) {
+ c->socket = -1;
+ }
+
+ c->outgoing = NULL;
+ terminate_connection(c, false);
+ }
+
+ list_empty_list(&outgoing_list);
+
+ if(myself && myself->connection) {
+ subnet_update(myself, NULL, false);
+ free_connection(myself->connection);
+ }
+
+ for(int i = 0; i < listen_sockets; i++) {
+ io_del(&listen_socket[i].tcp);
+ io_del(&listen_socket[i].udp);
+ close(listen_socket[i].tcp.fd);
+ close(listen_socket[i].udp.fd);
+ }
+
+ exit_requests();
+ exit_edges();
+ exit_subnets();
+ exit_nodes();
+ exit_connections();
+
+ if(!device_standby) {
+ device_disable();
+ }
+
+ free(myport);
+
+ if(device_fd >= 0) {
+ io_del(&device_io);
+ }
+
+ if(devops.close) {
+ devops.close();
+ }
+
+ exit_control();
+
+ free(scriptextension);
+ free(scriptinterpreter);
+
+ return;
}