/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2010 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2012 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
#include "xalloc.h"
char *myport;
+devops_t devops;
bool read_rsa_public_key(connection_t *c) {
FILE *fp;
xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
fp = fopen(fname, "r");
- if(fp) {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
+ if(!fp) {
+ logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
+ free(fname);
+ return false;
}
+ c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
+ fclose(fp);
free(fname);
if(c->rsa_key)
xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
fp = fopen(fname, "r");
- if(fp) {
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
-// RSA_blinding_on(c->rsa_key, NULL);
- fclose(fp);
+ if(!fp) {
+ logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
+ free(fname);
+ return false;
}
+ c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
+// RSA_blinding_on(c->rsa_key, NULL);
+ fclose(fp);
free(fname);
if(c->rsa_key)
return false;
}
-bool read_rsa_private_key(void) {
+static bool read_rsa_private_key(void) {
FILE *fp;
char *fname, *key, *pubkey;
struct stat s;
if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
- if(!get_config_string(lookup_config(myself->connection->config_tree, "PublicKey"), &pubkey)) {
+ if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) {
logger(LOG_ERR, "PrivateKey used but no PublicKey found!");
return false;
}
/*
Read Subnets from all host config files
*/
-static void load_all_subnets(void) {
+void load_all_subnets(void) {
DIR *dir;
struct dirent *ent;
char *dname;
char *fname;
avl_tree_t *config_tree;
config_t *cfg;
- subnet_t *s;
+ subnet_t *s, *s2;
node_t *n;
bool result;
continue;
n = lookup_node(ent->d_name);
- if(n)
- continue;
-
#ifdef _DIRENT_HAVE_D_TYPE
//if(ent->d_type != DT_REG)
// continue;
if(!result)
continue;
- n = new_node();
- n->name = xstrdup(ent->d_name);
- node_add(n);
+ 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;
- subnet_add(n, s);
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ } else {
+ subnet_add(n, s);
+ }
}
exit_configuration(&config_tree);
/*
Configure node_t myself and set up the local sockets (listen only)
*/
-bool setup_myself(void) {
+static bool setup_myself(void) {
config_t *cfg;
subnet_t *subnet;
- char *name, *hostname, *mode, *afname, *cipher, *digest;
+ char *name, *hostname, *mode, *afname, *cipher, *digest, *type;
+ 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);
myself->hostname = xstrdup("MYSELF");
myself->connection->hostname = xstrdup("MYSELF");
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(config_tree, "Port"), &myport)
- && !get_config_string(lookup_config(myself->connection->config_tree, "Port"), &myport))
+ 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;
if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
if(!strcasecmp(mode, "off"))
- routing_mode = FMODE_OFF;
+ forwarding_mode = FMODE_OFF;
else if(!strcasecmp(mode, "internal"))
- routing_mode = FMODE_INTERNAL;
+ forwarding_mode = FMODE_INTERNAL;
else if(!strcasecmp(mode, "kernel"))
- routing_mode = FMODE_KERNEL;
+ forwarding_mode = FMODE_KERNEL;
else {
logger(LOG_ERR, "Invalid forwarding mode!");
return false;
}
choice = true;
- get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice);
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);
- get_config_bool(lookup_config(myself->connection->config_tree, "ClampMSS"), &choice);
if(choice)
myself->options |= OPTION_CLAMP_MSS;
} 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)) {
+ (lookup_config(config_tree, "Cipher"), &cipher)) {
if(!strcasecmp(cipher, "none")) {
myself->incipher = NULL;
} else {
/* Check if we want to use message authentication codes... */
- if(get_config_string(lookup_config(myself->connection->config_tree, "Digest"), &digest)) {
+ if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
if(!strcasecmp(digest, "none")) {
myself->indigest = NULL;
} else {
myself->connection->outdigest = EVP_sha1();
- if(get_config_int(lookup_config(myself->connection->config_tree, "MACLength"), &myself->inmaclength)) {
+ if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) {
if(myself->indigest) {
if(myself->inmaclength > myself->indigest->md_size) {
logger(LOG_ERR, "MAC length exceeds size of digest!");
/* 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;
/* Open device */
- if(!setup_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;
+#ifdef ENABLE_UML
+ else if(!strcasecmp(type, "uml"))
+ devops = uml_devops;
+#endif
+#ifdef ENABLE_VDE
+ else if(!strcasecmp(type, "vde"))
+ devops = vde_devops;
+#endif
+ }
+
+ if(!devops.setup())
return false;
/* Run tinc-up script to further initialize the tap interface */
for(i = 0; i < 4; i++)
free(envp[i]);
- close_device();
+ devops.close();
return;
}
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