/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2010 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
/* First, check for simple PrivateKey statement */
if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
- if(!get_config_string(lookup_config(myself->connection->config_tree, "PublicKey"), &n)) {
+ if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
logger(LOG_ERR, "PrivateKey used but no PublicKey found!");
free(d);
return false;
event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
}
+/*
+ Read Subnets from all host config files
+*/
+void load_all_subnets(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char *dname;
+ char *fname;
+ splay_tree_t *config_tree;
+ config_t *cfg;
+ subnet_t *s, *s2;
+ node_t *n;
+ bool result;
+
+ xasprintf(&dname, "%s/hosts", confbase);
+ dir = opendir(dname);
+ if(!dir) {
+ logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ free(dname);
+ return;
+ }
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
+
+ n = lookup_node(ent->d_name);
+ #ifdef _DIRENT_HAVE_D_TYPE
+ //if(ent->d_type != DT_REG)
+ // continue;
+ #endif
+
+ xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name);
+ init_configuration(&config_tree);
+ result = read_config_file(config_tree, fname);
+ free(fname);
+ if(!result)
+ continue;
+
+ if(!n) {
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ if(!get_config_subnet(cfg, &s))
+ continue;
+
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ } else {
+ subnet_add(n, s);
+ }
+ }
+
+ exit_configuration(&config_tree);
+ }
+
+ closedir(dir);
+}
+
/*
Configure node_t myself and set up the local sockets (listen only)
*/
config_t *cfg;
subnet_t *subnet;
char *name, *hostname, *mode, *afname, *cipher, *digest;
+ char *fname = NULL;
char *address = NULL;
char *envp[5];
struct addrinfo *ai, *aip, hint = {0};
bool choice;
int i, err;
+ int replaywin_int;
myself = new_node();
myself->connection = new_connection();
- init_configuration(&myself->connection->config_tree);
- xasprintf(&myself->hostname, "MYSELF");
- xasprintf(&myself->connection->hostname, "MYSELF");
+ myself->hostname = xstrdup("MYSELF");
+ myself->connection->hostname = xstrdup("MYSELF");
myself->connection->options = 0;
myself->connection->protocol_version = PROT_CURRENT;
myself->name = name;
myself->connection->name = xstrdup(name);
-
- if(!read_connection_config(myself->connection)) {
- logger(LOG_ERR, "Cannot open host configuration file for myself!");
- return false;
- }
+ xasprintf(&fname, "%s/hosts/%s", confbase, name);
+ read_config_options(config_tree, name);
+ read_config_file(config_tree, fname);
+ free(fname);
if(!read_rsa_private_key())
return false;
- if(!get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport))
- xasprintf(&myport, "655");
+ if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
+ myport = xstrdup("655");
+
+ 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);
+ sockaddr2str(&sa, NULL, &myport);
+ }
/* Read in all the subnets specified in the host configuration file */
- cfg = lookup_config(myself->connection->config_tree, "Subnet");
+ cfg = lookup_config(config_tree, "Subnet");
while(cfg) {
if(!get_config_subnet(cfg, &subnet))
subnet_add(myself, subnet);
- cfg = lookup_config_next(myself->connection->config_tree, cfg);
+ cfg = lookup_config_next(config_tree, cfg);
}
/* Check some options */
if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
myself->options |= OPTION_TCPONLY;
- if(get_config_bool(lookup_config(myself->connection->config_tree, "IndirectData"), &choice) && choice)
- myself->options |= OPTION_INDIRECT;
-
- if(get_config_bool(lookup_config(myself->connection->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, "DirectOnly"), &directonly);
+ get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
+ strictsubnets |= tunnelserver;
if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) {
if(!strcasecmp(mode, "router"))
return false;
}
free(mode);
- } else
- routing_mode = RMODE_ROUTER;
+ }
- // Enable PMTUDiscovery by default if we are in router mode.
+ if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
+ if(!strcasecmp(mode, "off"))
+ forwarding_mode = FMODE_OFF;
+ else if(!strcasecmp(mode, "internal"))
+ forwarding_mode = FMODE_INTERNAL;
+ else if(!strcasecmp(mode, "kernel"))
+ forwarding_mode = FMODE_KERNEL;
+ else {
+ logger(LOG_ERR, "Invalid forwarding mode!");
+ return false;
+ }
+ free(mode);
+ }
- choice = routing_mode == RMODE_ROUTER;
- get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice);
- if(choice)
+ choice = true;
+ 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);
#if !defined(SOL_IP) || !defined(IP_TOS)
} else
maxtimeout = 900;
+ if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
+ if(udp_rcvbuf <= 0) {
+ logger(LOG_ERR, "UDPRcvBuf cannot be negative!");
+ return false;
+ }
+ }
+
+ if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
+ if(udp_sndbuf <= 0) {
+ logger(LOG_ERR, "UDPSndBuf cannot be negative!");
+ return false;
+ }
+ }
+
+ if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
+ if(replaywin_int < 0) {
+ logger(LOG_ERR, "ReplayWindow cannot be negative!");
+ return false;
+ }
+ replaywin = (unsigned)replaywin_int;
+ }
+
if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
if(!strcasecmp(afname, "IPv4"))
addressfamily = AF_INET;
/* Generate packet encryption key */
- if(!get_config_string(lookup_config(myself->connection->config_tree, "Cipher"), &cipher))
- cipher = xstrdup("aes256");
+ if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
+ cipher = xstrdup("blowfish");
if(!cipher_open_by_name(&myself->incipher, cipher)) {
logger(LOG_ERR, "Unrecognized cipher type!");
/* Check if we want to use message authentication codes... */
- if(!get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest))
- digest = xstrdup("sha256");
+ if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
+ digest = xstrdup("sha1");
int maclength = 4;
- get_config_int(lookup_config(myself->connection->config_tree, "MACLength"), &maclength);
+ get_config_int(lookup_config(config_tree, "MACLength"), &maclength);
if(maclength < 0) {
logger(LOG_ERR, "Bogus MAC length!");
/* Compression */
- if(get_config_int(lookup_config(myself->connection->config_tree, "Compression"), &myself->incompression)) {
+ if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
if(myself->incompression < 0 || myself->incompression > 11) {
logger(LOG_ERR, "Bogus compression level!");
return false;
graph();
+ if(strictsubnets)
+ load_all_subnets();
+
/* Open device */
if(!setup_device())
return false;
- event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
+ if(device_fd >= 0) {
+ event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
- if (event_add(&device_ev, NULL) < 0) {
- logger(LOG_ERR, "event_add failed: %s", strerror(errno));
- close_device();
- return false;
+ if (event_add(&device_ev, NULL) < 0) {
+ logger(LOG_ERR, "event_add failed: %s", strerror(errno));
+ close_device();
+ return false;
+ }
}
/* Run tinc-up script to further initialize the tap interface */
execute_script("tinc-up", envp);
- for(i = 0; i < 5; i++)
+ for(i = 0; i < 4; i++)
free(envp[i]);
/* Run subnet-up scripts for our own subnets */
EV_READ|EV_PERSIST,
handle_new_meta_connection, NULL);
if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
- logger(LOG_EMERG, "event_add failed: %s", strerror(errno));
+ logger(LOG_ERR, "event_add failed: %s", strerror(errno));
abort();
}
- event_set(&listen_socket[listen_sockets].ev_udp,
- listen_socket[listen_sockets].udp,
- EV_READ|EV_PERSIST,
- handle_incoming_vpn_data, NULL);
- if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
- logger(LOG_EMERG, "event_add failed: %s", strerror(errno));
+ if(!thread_create(&listen_socket[listen_sockets].udp_thread, handle_incoming_vpn_data, &listen_socket[listen_sockets])) {
+ logger(LOG_ERR, "thread_create failed: %s", strerror(errno));
abort();
}
event_del(&listen_socket[i].ev_udp);
close(listen_socket[i].tcp);
close(listen_socket[i].udp);
+ thread_destroy(&listen_socket[i].udp_thread);
}
xasprintf(&envp[0], "NETNAME=%s", netname ? : "");