2002-02-18 16:25:19 +00:00
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/*
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net_setup.c -- Setup.
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2006-04-26 13:52:58 +00:00
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Copyright (C) 1998-2005 Ivo Timmermans,
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2012-02-18 13:37:52 +00:00
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2000-2012 Guus Sliepen <guus@tinc-vpn.org>
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2009-09-25 19:14:56 +00:00
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2006 Scott Lamb <slamb@slamb.org>
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2010-11-16 16:28:41 +00:00
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2010 Brandon Black <blblack@gmail.com>
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2002-02-18 16:25:19 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2009-09-24 22:01:00 +00:00
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2002-02-18 16:25:19 +00:00
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*/
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2003-07-17 15:06:27 +00:00
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#include "system.h"
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2002-02-18 16:25:19 +00:00
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#include <openssl/pem.h>
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#include <openssl/rsa.h>
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#include <openssl/rand.h>
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2003-10-11 12:16:13 +00:00
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#include <openssl/err.h>
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#include <openssl/evp.h>
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2002-02-18 16:25:19 +00:00
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2003-07-17 15:06:27 +00:00
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#include "avl_tree.h"
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2002-02-18 16:25:19 +00:00
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#include "conf.h"
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#include "connection.h"
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2003-07-17 15:06:27 +00:00
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#include "device.h"
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#include "event.h"
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#include "graph.h"
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#include "logger.h"
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2002-02-18 16:25:19 +00:00
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#include "net.h"
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#include "netutl.h"
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#include "process.h"
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#include "protocol.h"
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#include "route.h"
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2003-07-17 15:06:27 +00:00
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#include "subnet.h"
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#include "utils.h"
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#include "xalloc.h"
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2002-02-18 16:25:19 +00:00
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char *myport;
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2011-12-04 00:20:59 +00:00
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devops_t devops;
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2002-02-18 16:25:19 +00:00
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2009-09-24 22:14:03 +00:00
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bool read_rsa_public_key(connection_t *c) {
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2002-09-09 21:25:28 +00:00
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FILE *fp;
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char *fname;
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char *key;
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2003-03-14 09:43:10 +00:00
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if(!c->rsa_key) {
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2002-09-09 21:25:28 +00:00
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c->rsa_key = RSA_new();
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2003-03-28 13:41:49 +00:00
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// RSA_blinding_on(c->rsa_key, NULL);
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2003-03-14 09:43:10 +00:00
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}
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2002-09-09 21:25:28 +00:00
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/* First, check for simple PublicKey statement */
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if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &key)) {
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BN_hex2bn(&c->rsa_key->n, key);
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BN_hex2bn(&c->rsa_key->e, "FFFF");
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free(key);
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2003-07-22 20:55:21 +00:00
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return true;
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2002-09-09 21:25:28 +00:00
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}
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/* Else, check for PublicKeyFile statement and read it */
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2003-07-22 20:55:21 +00:00
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if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname)) {
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fp = fopen(fname, "r");
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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if(!fp) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
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2003-07-22 20:55:21 +00:00
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fname, strerror(errno));
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2002-09-09 21:25:28 +00:00
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free(fname);
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2003-07-22 20:55:21 +00:00
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return false;
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}
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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free(fname);
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c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
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fclose(fp);
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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if(c->rsa_key)
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return true; /* Woohoo. */
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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/* If it fails, try PEM_read_RSA_PUBKEY. */
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fp = fopen(fname, "r");
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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if(!fp) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Error reading RSA public key file `%s': %s",
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2003-07-22 20:55:21 +00:00
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fname, strerror(errno));
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2002-09-09 21:25:28 +00:00
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free(fname);
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2003-07-22 20:55:21 +00:00
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return false;
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}
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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free(fname);
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c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
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fclose(fp);
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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if(c->rsa_key) {
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// RSA_blinding_on(c->rsa_key, NULL);
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return true;
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2002-09-09 21:25:28 +00:00
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}
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2003-07-22 20:55:21 +00:00
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Reading RSA public key file `%s' failed: %s",
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2003-07-22 20:55:21 +00:00
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fname, strerror(errno));
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return false;
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2002-09-09 21:25:28 +00:00
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}
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/* Else, check if a harnessed public key is in the config file */
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2009-09-08 16:18:36 +00:00
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xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
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2002-09-09 21:25:28 +00:00
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fp = fopen(fname, "r");
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2011-08-30 17:56:56 +00:00
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if(!fp) {
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logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
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free(fname);
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2011-08-30 18:49:48 +00:00
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return false;
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2002-09-09 21:25:28 +00:00
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}
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2011-08-30 17:56:56 +00:00
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c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
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fclose(fp);
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2002-09-09 21:25:28 +00:00
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free(fname);
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if(c->rsa_key)
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2003-07-22 20:55:21 +00:00
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return true;
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2002-09-09 21:25:28 +00:00
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/* Try again with PEM_read_RSA_PUBKEY. */
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2009-09-08 16:18:36 +00:00
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xasprintf(&fname, "%s/hosts/%s", confbase, c->name);
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2002-09-09 21:25:28 +00:00
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fp = fopen(fname, "r");
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2011-08-30 17:56:56 +00:00
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if(!fp) {
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logger(LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
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free(fname);
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2011-08-30 18:49:48 +00:00
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return false;
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2002-09-09 21:25:28 +00:00
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}
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2011-08-30 17:56:56 +00:00
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c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
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// RSA_blinding_on(c->rsa_key, NULL);
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fclose(fp);
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2002-09-09 21:25:28 +00:00
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free(fname);
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if(c->rsa_key)
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2003-07-22 20:55:21 +00:00
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return true;
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2002-09-09 21:25:28 +00:00
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "No public key for %s specified!", c->name);
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2002-09-09 21:25:28 +00:00
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2003-07-22 20:55:21 +00:00
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return false;
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2002-02-18 16:25:19 +00:00
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}
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2011-05-28 21:36:52 +00:00
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static bool read_rsa_private_key(void) {
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2002-09-09 21:25:28 +00:00
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FILE *fp;
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2004-03-15 18:15:02 +00:00
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char *fname, *key, *pubkey;
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2003-08-08 22:11:54 +00:00
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struct stat s;
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2002-09-09 21:25:28 +00:00
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if(get_config_string(lookup_config(config_tree, "PrivateKey"), &key)) {
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2010-10-22 10:47:12 +00:00
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if(!get_config_string(lookup_config(config_tree, "PublicKey"), &pubkey)) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "PrivateKey used but no PublicKey found!");
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2004-03-15 18:15:02 +00:00
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return false;
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}
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2002-09-09 21:25:28 +00:00
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myself->connection->rsa_key = RSA_new();
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2003-03-28 13:41:49 +00:00
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// RSA_blinding_on(myself->connection->rsa_key, NULL);
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2002-09-09 21:25:28 +00:00
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BN_hex2bn(&myself->connection->rsa_key->d, key);
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2004-03-15 18:15:02 +00:00
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BN_hex2bn(&myself->connection->rsa_key->n, pubkey);
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2002-09-09 21:25:28 +00:00
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BN_hex2bn(&myself->connection->rsa_key->e, "FFFF");
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free(key);
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2004-03-15 18:15:02 +00:00
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free(pubkey);
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2003-07-22 20:55:21 +00:00
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return true;
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2002-09-09 21:25:28 +00:00
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}
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if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
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2009-09-08 16:18:36 +00:00
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xasprintf(&fname, "%s/rsa_key.priv", confbase);
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2002-09-09 21:25:28 +00:00
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2003-08-08 22:11:54 +00:00
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fp = fopen(fname, "r");
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2002-09-09 21:25:28 +00:00
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2003-08-08 22:11:54 +00:00
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if(!fp) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Error reading RSA private key file `%s': %s",
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2003-08-08 22:11:54 +00:00
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fname, strerror(errno));
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free(fname);
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return false;
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}
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2002-09-09 21:25:28 +00:00
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2003-08-08 22:11:54 +00:00
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#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
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if(fstat(fileno(fp), &s)) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Could not stat RSA private key file `%s': %s'",
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2003-08-08 22:11:54 +00:00
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fname, strerror(errno));
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2002-09-09 21:25:28 +00:00
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free(fname);
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2003-08-08 22:11:54 +00:00
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return false;
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}
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2002-09-09 21:25:28 +00:00
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2003-08-14 14:21:35 +00:00
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if(s.st_mode & ~0100700)
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2009-09-24 22:54:07 +00:00
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logger(LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
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2003-08-08 22:11:54 +00:00
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#endif
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2002-09-09 21:25:28 +00:00
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2003-08-08 22:11:54 +00:00
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myself->connection->rsa_key = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);
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fclose(fp);
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if(!myself->connection->rsa_key) {
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2009-09-24 22:54:07 +00:00
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logger(LOG_ERR, "Reading RSA private key file `%s' failed: %s",
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2003-08-08 22:11:54 +00:00
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fname, strerror(errno));
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free(fname);
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return false;
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2002-09-09 21:25:28 +00:00
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}
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free(fname);
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2003-08-08 22:11:54 +00:00
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return true;
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2002-02-18 16:25:19 +00:00
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}
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2010-03-01 22:44:56 +00:00
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/*
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Read Subnets from all host config files
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*/
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2010-04-10 22:50:42 +00:00
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void load_all_subnets(void) {
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2010-03-01 22:44:56 +00:00
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DIR *dir;
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struct dirent *ent;
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char *dname;
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char *fname;
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avl_tree_t *config_tree;
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config_t *cfg;
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2010-04-10 22:50:42 +00:00
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subnet_t *s, *s2;
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2010-03-01 22:44:56 +00:00
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node_t *n;
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bool result;
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xasprintf(&dname, "%s/hosts", confbase);
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dir = opendir(dname);
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if(!dir) {
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logger(LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
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free(dname);
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return;
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}
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while((ent = readdir(dir))) {
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if(!check_id(ent->d_name))
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continue;
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n = lookup_node(ent->d_name);
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#ifdef _DIRENT_HAVE_D_TYPE
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//if(ent->d_type != DT_REG)
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// continue;
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#endif
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xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name);
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init_configuration(&config_tree);
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result = read_config_file(config_tree, fname);
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free(fname);
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if(!result)
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continue;
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2010-04-11 02:35:16 +00:00
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if(!n) {
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n = new_node();
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n->name = xstrdup(ent->d_name);
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node_add(n);
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}
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2010-03-01 22:44:56 +00:00
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for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
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if(!get_config_subnet(cfg, &s))
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continue;
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2010-04-10 22:50:42 +00:00
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if((s2 = lookup_subnet(n, s))) {
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s2->expires = -1;
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} else {
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subnet_add(n, s);
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}
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2010-03-01 22:44:56 +00:00
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}
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exit_configuration(&config_tree);
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}
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closedir(dir);
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}
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2002-02-18 16:25:19 +00:00
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/*
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Configure node_t myself and set up the local sockets (listen only)
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*/
|
2011-05-28 21:36:52 +00:00
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static bool setup_myself(void) {
|
2002-09-09 21:25:28 +00:00
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config_t *cfg;
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subnet_t *subnet;
|
2011-12-04 00:20:59 +00:00
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|
char *name, *hostname, *mode, *afname, *cipher, *digest, *type;
|
2010-10-22 10:47:12 +00:00
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char *fname = NULL;
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2002-09-09 21:25:28 +00:00
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char *address = NULL;
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2003-07-22 21:13:23 +00:00
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|
|
char *envp[5];
|
2003-07-30 11:50:45 +00:00
|
|
|
struct addrinfo *ai, *aip, hint = {0};
|
2003-07-22 20:55:21 +00:00
|
|
|
bool choice;
|
2003-07-22 21:13:23 +00:00
|
|
|
int i, err;
|
2010-11-13 18:05:50 +00:00
|
|
|
int replaywin_int;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
myself = new_node();
|
|
|
|
myself->connection = new_connection();
|
|
|
|
|
2009-12-23 18:51:55 +00:00
|
|
|
myself->hostname = xstrdup("MYSELF");
|
|
|
|
myself->connection->hostname = xstrdup("MYSELF");
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
myself->connection->options = 0;
|
|
|
|
myself->connection->protocol_version = PROT_CURRENT;
|
|
|
|
|
|
|
|
if(!get_config_string(lookup_config(config_tree, "Name"), &name)) { /* Not acceptable */
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Name for tinc daemon required!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
if(!check_id(name)) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Invalid name for myself!");
|
2002-09-09 21:25:28 +00:00
|
|
|
free(name);
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
myself->name = name;
|
|
|
|
myself->connection->name = xstrdup(name);
|
2010-10-22 10:47:12 +00:00
|
|
|
xasprintf(&fname, "%s/hosts/%s", confbase, name);
|
2010-10-22 11:06:06 +00:00
|
|
|
read_config_options(config_tree, name);
|
2010-10-22 10:47:12 +00:00
|
|
|
read_config_file(config_tree, fname);
|
|
|
|
free(fname);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2004-03-15 18:15:02 +00:00
|
|
|
if(!read_rsa_private_key())
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
|
2009-12-23 18:51:55 +00:00
|
|
|
myport = xstrdup("655");
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2010-04-03 08:46:45 +00:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
/* Read in all the subnets specified in the host configuration file */
|
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
cfg = lookup_config(config_tree, "Subnet");
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
while(cfg) {
|
|
|
|
if(!get_config_subnet(cfg, &subnet))
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
subnet_add(myself, subnet);
|
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
cfg = lookup_config_next(config_tree, cfg);
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Check some options */
|
|
|
|
|
2003-12-20 19:47:53 +00:00
|
|
|
if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
|
|
|
|
myself->options |= OPTION_INDIRECT;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2003-12-20 19:47:53 +00:00
|
|
|
if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
|
|
|
|
myself->options |= OPTION_TCPONLY;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
if(myself->options & OPTION_TCPONLY)
|
|
|
|
myself->options |= OPTION_INDIRECT;
|
|
|
|
|
2010-03-02 21:55:24 +00:00
|
|
|
get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
|
2010-03-01 23:18:44 +00:00
|
|
|
get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
|
2003-11-17 15:30:18 +00:00
|
|
|
get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
|
2010-03-01 23:18:44 +00:00
|
|
|
strictsubnets |= tunnelserver;
|
2003-11-17 15:30:18 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
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 {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Invalid routing mode!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
free(mode);
|
2010-03-02 21:34:26 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
|
|
|
|
if(!strcasecmp(mode, "off"))
|
2010-03-02 22:27:50 +00:00
|
|
|
forwarding_mode = FMODE_OFF;
|
2010-03-02 21:34:26 +00:00
|
|
|
else if(!strcasecmp(mode, "internal"))
|
2010-03-02 22:27:50 +00:00
|
|
|
forwarding_mode = FMODE_INTERNAL;
|
2010-03-02 21:34:26 +00:00
|
|
|
else if(!strcasecmp(mode, "kernel"))
|
2010-03-02 22:27:50 +00:00
|
|
|
forwarding_mode = FMODE_KERNEL;
|
2010-03-02 21:34:26 +00:00
|
|
|
else {
|
|
|
|
logger(LOG_ERR, "Invalid forwarding mode!");
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
free(mode);
|
|
|
|
}
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-12-24 11:42:21 +00:00
|
|
|
choice = true;
|
|
|
|
get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
|
|
|
|
if(choice)
|
2009-09-12 11:40:32 +00:00
|
|
|
myself->options |= OPTION_PMTU_DISCOVERY;
|
2009-03-09 12:48:54 +00:00
|
|
|
|
2010-01-16 19:16:33 +00:00
|
|
|
choice = true;
|
|
|
|
get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
|
|
|
|
if(choice)
|
|
|
|
myself->options |= OPTION_CLAMP_MSS;
|
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
|
|
|
|
|
2002-03-01 15:14:29 +00:00
|
|
|
#if !defined(SOL_IP) || !defined(IP_TOS)
|
2002-09-09 21:25:28 +00:00
|
|
|
if(priorityinheritance)
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
|
2002-03-01 15:14:29 +00:00
|
|
|
#endif
|
2002-03-01 12:25:58 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
|
|
|
|
macexpire = 600;
|
|
|
|
|
2003-12-07 14:28:39 +00:00
|
|
|
if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
|
2002-09-09 21:25:28 +00:00
|
|
|
if(maxtimeout <= 0) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Bogus maximum timeout!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
} else
|
|
|
|
maxtimeout = 900;
|
|
|
|
|
2010-11-13 18:05:49 +00:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-11-13 18:05:50 +00:00
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
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 {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Invalid address family!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
free(afname);
|
2003-06-25 20:52:59 +00:00
|
|
|
}
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
|
|
|
|
|
|
|
|
/* Generate packet encryption key */
|
|
|
|
|
|
|
|
if(get_config_string
|
2010-10-22 10:47:12 +00:00
|
|
|
(lookup_config(config_tree, "Cipher"), &cipher)) {
|
2002-09-09 21:25:28 +00:00
|
|
|
if(!strcasecmp(cipher, "none")) {
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->incipher = NULL;
|
2002-09-09 21:25:28 +00:00
|
|
|
} else {
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->incipher = EVP_get_cipherbyname(cipher);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-04-02 23:05:23 +00:00
|
|
|
if(!myself->incipher) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Unrecognized cipher type!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
} else
|
2009-10-11 11:56:04 +00:00
|
|
|
myself->incipher = EVP_bf_cbc();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-04-02 23:05:23 +00:00
|
|
|
if(myself->incipher)
|
|
|
|
myself->inkeylength = myself->incipher->key_len + myself->incipher->iv_len;
|
2002-09-09 21:25:28 +00:00
|
|
|
else
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->inkeylength = 1;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-10-11 11:56:04 +00:00
|
|
|
myself->connection->outcipher = EVP_bf_ofb();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
|
|
|
|
keylifetime = 3600;
|
|
|
|
|
|
|
|
keyexpires = now + keylifetime;
|
2003-03-28 13:41:49 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
/* Check if we want to use message authentication codes... */
|
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
|
2002-09-09 21:25:28 +00:00
|
|
|
if(!strcasecmp(digest, "none")) {
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->indigest = NULL;
|
2002-09-09 21:25:28 +00:00
|
|
|
} else {
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->indigest = EVP_get_digestbyname(digest);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-04-02 23:05:23 +00:00
|
|
|
if(!myself->indigest) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Unrecognized digest type!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
} else
|
2009-10-11 11:56:04 +00:00
|
|
|
myself->indigest = EVP_sha1();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2009-10-11 11:56:04 +00:00
|
|
|
myself->connection->outdigest = EVP_sha1();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) {
|
2009-04-02 23:05:23 +00:00
|
|
|
if(myself->indigest) {
|
|
|
|
if(myself->inmaclength > myself->indigest->md_size) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "MAC length exceeds size of digest!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2009-04-02 23:05:23 +00:00
|
|
|
} else if(myself->inmaclength < 0) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Bogus MAC length!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
} else
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->inmaclength = 4;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
myself->connection->outmaclength = 0;
|
|
|
|
|
|
|
|
/* Compression */
|
|
|
|
|
2010-10-22 10:47:12 +00:00
|
|
|
if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
|
2009-04-02 23:05:23 +00:00
|
|
|
if(myself->incompression < 0 || myself->incompression > 11) {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Bogus compression level!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
} else
|
2009-04-02 23:05:23 +00:00
|
|
|
myself->incompression = 0;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
myself->connection->outcompression = 0;
|
|
|
|
|
|
|
|
/* Done */
|
|
|
|
|
|
|
|
myself->nexthop = myself;
|
|
|
|
myself->via = myself;
|
2003-07-22 20:55:21 +00:00
|
|
|
myself->status.reachable = true;
|
2002-09-09 21:25:28 +00:00
|
|
|
node_add(myself);
|
|
|
|
|
|
|
|
graph();
|
|
|
|
|
2010-03-01 23:18:44 +00:00
|
|
|
if(strictsubnets)
|
2010-03-01 22:44:56 +00:00
|
|
|
load_all_subnets();
|
|
|
|
|
2003-07-22 21:13:23 +00:00
|
|
|
/* Open device */
|
|
|
|
|
2012-02-18 13:37:52 +00:00
|
|
|
devops = os_devops;
|
|
|
|
|
2011-12-04 00:20:59 +00:00
|
|
|
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())
|
2003-07-22 21:13:23 +00:00
|
|
|
return false;
|
|
|
|
|
|
|
|
/* Run tinc-up script to further initialize the tap interface */
|
2009-09-08 16:18:36 +00:00
|
|
|
xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
|
|
|
|
xasprintf(&envp[1], "DEVICE=%s", device ? : "");
|
|
|
|
xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
|
|
|
|
xasprintf(&envp[3], "NAME=%s", myself->name);
|
2003-07-22 21:13:23 +00:00
|
|
|
envp[4] = NULL;
|
|
|
|
|
|
|
|
execute_script("tinc-up", envp);
|
|
|
|
|
|
|
|
for(i = 0; i < 5; i++)
|
|
|
|
free(envp[i]);
|
|
|
|
|
2004-12-01 20:06:05 +00:00
|
|
|
/* Run subnet-up scripts for our own subnets */
|
|
|
|
|
|
|
|
subnet_update(myself, NULL, true);
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
/* Open sockets */
|
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
cfg = lookup_config(config_tree, "BindToAddress");
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
do {
|
|
|
|
get_config_string(cfg, &address);
|
|
|
|
if(cfg)
|
|
|
|
cfg = lookup_config_next(config_tree, cfg);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
hint.ai_family = addressfamily;
|
|
|
|
hint.ai_socktype = SOCK_STREAM;
|
|
|
|
hint.ai_protocol = IPPROTO_TCP;
|
|
|
|
hint.ai_flags = AI_PASSIVE;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
err = getaddrinfo(address, myport, &hint, &ai);
|
|
|
|
free(address);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
if(err || !ai) {
|
|
|
|
logger(LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
|
|
|
|
gai_strerror(err));
|
|
|
|
return false;
|
|
|
|
}
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
listen_sockets = 0;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
for(aip = ai; aip; aip = aip->ai_next) {
|
|
|
|
listen_socket[listen_sockets].tcp =
|
|
|
|
setup_listen_socket((sockaddr_t *) aip->ai_addr);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
if(listen_socket[listen_sockets].tcp < 0)
|
|
|
|
continue;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
listen_socket[listen_sockets].udp =
|
|
|
|
setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
if(listen_socket[listen_sockets].udp < 0)
|
|
|
|
continue;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
ifdebug(CONNECTIONS) {
|
|
|
|
hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
|
|
|
|
logger(LOG_NOTICE, "Listening on %s", hostname);
|
|
|
|
free(hostname);
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(&listen_socket[listen_sockets].sa, aip->ai_addr, aip->ai_addrlen);
|
|
|
|
listen_sockets++;
|
|
|
|
}
|
2002-03-01 13:18:54 +00:00
|
|
|
|
2012-02-17 15:25:00 +00:00
|
|
|
freeaddrinfo(ai);
|
|
|
|
} while(cfg);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
if(listen_sockets)
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_NOTICE, "Ready");
|
2002-09-09 21:25:28 +00:00
|
|
|
else {
|
2009-09-24 22:54:07 +00:00
|
|
|
logger(LOG_ERR, "Unable to create any listening socket!");
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
return true;
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2009-05-18 12:25:10 +00:00
|
|
|
initialize network
|
2002-02-18 16:25:19 +00:00
|
|
|
*/
|
2009-09-24 22:14:03 +00:00
|
|
|
bool setup_network(void) {
|
2002-09-09 21:25:28 +00:00
|
|
|
now = time(NULL);
|
|
|
|
|
2006-11-11 22:44:15 +00:00
|
|
|
init_events();
|
2002-09-09 21:25:28 +00:00
|
|
|
init_connections();
|
|
|
|
init_subnets();
|
|
|
|
init_nodes();
|
|
|
|
init_edges();
|
|
|
|
init_requests();
|
|
|
|
|
2006-01-19 17:13:18 +00:00
|
|
|
if(get_config_int(lookup_config(config_tree, "PingInterval"), &pinginterval)) {
|
|
|
|
if(pinginterval < 1) {
|
|
|
|
pinginterval = 86400;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
} else
|
2006-01-19 17:13:18 +00:00
|
|
|
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))
|
2009-03-09 13:04:31 +00:00
|
|
|
maxoutbufsize = 10 * MTU;
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
if(!setup_myself())
|
|
|
|
return false;
|
2003-01-14 12:53:59 +00:00
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
return true;
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
close all open network connections
|
|
|
|
*/
|
2009-09-24 22:14:03 +00:00
|
|
|
void close_network_connections(void) {
|
2002-09-09 21:25:28 +00:00
|
|
|
avl_node_t *node, *next;
|
|
|
|
connection_t *c;
|
2003-01-14 12:53:59 +00:00
|
|
|
char *envp[5];
|
2002-09-09 21:25:28 +00:00
|
|
|
int i;
|
|
|
|
|
|
|
|
for(node = connection_tree->head; node; node = next) {
|
|
|
|
next = node->next;
|
2003-08-28 21:05:11 +00:00
|
|
|
c = node->data;
|
2009-10-20 20:14:47 +00:00
|
|
|
c->outgoing = NULL;
|
2003-07-22 20:55:21 +00:00
|
|
|
terminate_connection(c, false);
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
2009-10-20 20:14:47 +00:00
|
|
|
for(list_node_t *node = outgoing_list->head; node; node = node->next) {
|
|
|
|
outgoing_t *outgoing = node->data;
|
|
|
|
|
|
|
|
if(outgoing->event)
|
|
|
|
event_del(outgoing->event);
|
|
|
|
}
|
|
|
|
|
2009-01-20 12:12:41 +00:00
|
|
|
list_delete_list(outgoing_list);
|
|
|
|
|
2004-12-01 20:06:05 +00:00
|
|
|
if(myself && myself->connection) {
|
|
|
|
subnet_update(myself, NULL, false);
|
2003-07-22 20:55:21 +00:00
|
|
|
terminate_connection(myself->connection, false);
|
2009-01-19 22:17:28 +00:00
|
|
|
free_connection(myself->connection);
|
2004-12-01 20:06:05 +00:00
|
|
|
}
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
for(i = 0; i < listen_sockets; i++) {
|
|
|
|
close(listen_socket[i].tcp);
|
|
|
|
close(listen_socket[i].udp);
|
|
|
|
}
|
|
|
|
|
2009-09-08 16:18:36 +00:00
|
|
|
xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
|
|
|
|
xasprintf(&envp[1], "DEVICE=%s", device ? : "");
|
|
|
|
xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
|
|
|
|
xasprintf(&envp[3], "NAME=%s", myself->name);
|
2006-02-06 12:30:51 +00:00
|
|
|
envp[4] = NULL;
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
exit_requests();
|
|
|
|
exit_edges();
|
|
|
|
exit_subnets();
|
|
|
|
exit_nodes();
|
|
|
|
exit_connections();
|
2006-11-11 22:44:15 +00:00
|
|
|
exit_events();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
execute_script("tinc-down", envp);
|
|
|
|
|
2009-01-09 11:36:06 +00:00
|
|
|
if(myport) free(myport);
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
for(i = 0; i < 4; i++)
|
|
|
|
free(envp[i]);
|
|
|
|
|
2011-12-04 00:20:59 +00:00
|
|
|
devops.close();
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
return;
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|