/*
net_setup.c -- Setup.
Copyright (C) 1998-2005 Ivo Timmermans,
- 2000-2013 Guus Sliepen <guus@tinc-vpn.org>
+ 2000-2017 Guus Sliepen <guus@tinc-vpn.org>
2006 Scott Lamb <slamb@slamb.org>
2010 Brandon Black <blblack@gmail.com>
#include "netutl.h"
#include "process.h"
#include "protocol.h"
+#include "proxy.h"
#include "route.h"
#include "subnet.h"
#include "utils.h"
char *myport;
devops_t devops;
-char *proxyhost;
-char *proxyport;
-char *proxyuser;
-char *proxypass;
-proxytype_t proxytype;
+#ifndef HAVE_RSA_SET0_KEY
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d) {
+ BN_free(r->n); r->n = n;
+ BN_free(r->e); r->e = e;
+ BN_free(r->d); r->d = d;
+ return 1;
+}
+#endif
bool read_rsa_public_key(connection_t *c) {
FILE *fp;
char *pubname;
char *hcfname;
char *key;
+ BIGNUM *n = NULL;
+ BIGNUM *e = NULL;
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)) {
- if(BN_hex2bn(&c->rsa_key->n, key) != strlen(key)) {
+ if(BN_hex2bn(&n, key) != strlen(key)) {
+ free(key);
logger(LOG_ERR, "Invalid PublicKey for %s!", c->name);
return false;
}
- BN_hex2bn(&c->rsa_key->e, "FFFF");
free(key);
+ BN_hex2bn(&e, "FFFF");
+ if(!n || !e || RSA_set0_key(c->rsa_key, n, e, NULL) != 1) {
+ BN_free(e);
+ BN_free(n);
+ logger(LOG_ERR, "RSA_set0_key() failed with PublicKey for %s!", c->name);
+ return false;
+ }
return true;
}
static bool read_rsa_private_key(void) {
FILE *fp;
char *fname, *key, *pubkey;
+ BIGNUM *n = NULL;
+ BIGNUM *e = NULL;
+ BIGNUM *d = NULL;
if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
myself->connection->rsa_key = RSA_new();
// RSA_blinding_on(myself->connection->rsa_key, NULL);
- if(BN_hex2bn(&myself->connection->rsa_key->d, key) != strlen(key)) {
+ if(BN_hex2bn(&d, key) != strlen(key)) {
logger(LOG_ERR, "Invalid PrivateKey for myself!");
free(key);
return false;
}
free(key);
if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) {
+ BN_free(d);
logger(LOG_ERR, "PrivateKey used but no PublicKey found!");
return false;
}
- if(BN_hex2bn(&myself->connection->rsa_key->n, pubkey) != strlen(pubkey)) {
- logger(LOG_ERR, "Invalid PublicKey for myself!");
+ if(BN_hex2bn(&n, pubkey) != strlen(pubkey)) {
free(pubkey);
+ BN_free(d);
+ logger(LOG_ERR, "Invalid PublicKey for myself!");
return false;
}
free(pubkey);
- BN_hex2bn(&myself->connection->rsa_key->e, "FFFF");
+ BN_hex2bn(&e, "FFFF");
+ if(!n || !e || !d || RSA_set0_key(myself->connection->rsa_key, n, e, d) != 1) {
+ BN_free(d);
+ BN_free(e);
+ BN_free(n);
+ logger(LOG_ERR, "RSA_set0_key() failed with PrivateKey for myself!");
+ return false;
+ }
return true;
}
proxytype = PROXY_EXEC;
} else {
logger(LOG_ERR, "Unknown proxy type %s!", proxy);
+ free(proxy);
return false;
}
case PROXY_EXEC:
if(!space || !*space) {
logger(LOG_ERR, "Argument expected for proxy type exec!");
+ free(proxy);
return false;
}
proxyhost = xstrdup(space);
*space++ = 0, proxypass = space;
if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
logger(LOG_ERR, "Host and port argument expected for proxy!");
+ free(proxy);
return false;
}
proxyhost = xstrdup(proxyhost);
routing_mode = RMODE_HUB;
else {
logger(LOG_ERR, "Invalid routing mode!");
+ free(mode);
return false;
}
free(mode);
forwarding_mode = FMODE_KERNEL;
else {
logger(LOG_ERR, "Invalid forwarding mode!");
+ free(mode);
return false;
}
free(mode);
broadcast_mode = BMODE_DIRECT;
else {
logger(LOG_ERR, "Invalid broadcast mode!");
+ free(mode);
return false;
}
free(mode);
#if !defined(SOL_IP) || !defined(IP_TOS)
if(priorityinheritance)
- logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+ logger(LOG_WARNING, "%s not supported on this platform for IPv4 connection", "PriorityInheritance");
+#endif
+
+#if !defined(IPPROTO_IPV6) || !defined(IPV6_TCLASS)
+ if(priorityinheritance)
+ logger(LOG_WARNING, "%s not supported on this platform for IPv6 connection", "PriorityInheritance");
#endif
if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
} else
maxtimeout = 900;
+ if(get_config_int(lookup_config(config_tree, "MinTimeout"), &mintimeout)) {
+ if(mintimeout < 0) {
+ logger(LOG_ERR, "Bogus minimum timeout!");
+ return false;
+ }
+ if(mintimeout > maxtimeout) {
+ logger(LOG_WARNING, "Minimum timeout (%d s) cannot be larger than maximum timeout (%d s). Correcting !", mintimeout, maxtimeout );
+ mintimeout=maxtimeout;
+ }
+ } else
+ mintimeout = 0;
+
if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
if(udp_rcvbuf <= 0) {
logger(LOG_ERR, "UDPRcvBuf cannot be negative!");
addressfamily = AF_UNSPEC;
else {
logger(LOG_ERR, "Invalid address family!");
+ free(afname);
return false;
}
free(afname);
if(!myself->incipher) {
logger(LOG_ERR, "Unrecognized cipher type!");
+ free(cipher);
return false;
}
}
free(cipher);
} else
- myself->incipher = EVP_bf_cbc();
+ myself->incipher = EVP_aes_256_cbc();
if(myself->incipher)
- myself->inkeylength = myself->incipher->key_len + myself->incipher->iv_len;
+ myself->inkeylength = EVP_CIPHER_key_length(myself->incipher) + EVP_CIPHER_iv_length(myself->incipher);
else
myself->inkeylength = 1;
- myself->connection->outcipher = EVP_bf_ofb();
+ /* We need to use a stream mode for the meta protocol. Use AES for this,
+ but try to match the key size with the one from the cipher selected
+ by Cipher.
+
+ If Cipher is set to none, still use a low level of encryption for the
+ meta protocol.
+ */
+
+ int keylen = myself->incipher ? EVP_CIPHER_key_length(myself->incipher) : 0;
+ if(keylen <= 16)
+ myself->connection->outcipher = EVP_aes_128_cfb();
+ else if(keylen <= 24)
+ myself->connection->outcipher = EVP_aes_192_cfb();
+ else
+ myself->connection->outcipher = EVP_aes_256_cfb();
if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
keylifetime = 3600;
free(digest);
} else
- myself->indigest = EVP_sha1();
+ myself->indigest = EVP_sha256();
- myself->connection->outdigest = EVP_sha1();
+ myself->connection->outdigest = EVP_sha256();
if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) {
if(myself->indigest) {
- if(myself->inmaclength > myself->indigest->md_size) {
+ if(myself->inmaclength > EVP_MD_size(myself->indigest)) {
logger(LOG_ERR, "MAC length exceeds size of digest!");
return false;
} else if(myself->inmaclength < 0) {
xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
xasprintf(&envp[3], "NAME=%s", myself->name);
+#ifdef HAVE_MINGW
+ Sleep(1000);
+#endif
+#ifdef HAVE_CYGWIN
+ sleep(1);
+#endif
execute_script("tinc-up", envp);
for(i = 0; i < 4; i++)
hint.ai_protocol = IPPROTO_TCP;
hint.ai_flags = AI_PASSIVE;
+#if HAVE_DECL_RES_INIT
+ // ensure glibc reloads /etc/resolv.conf.
+ res_init();
+#endif
err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
free(address);