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mtbishop 2008-01-07 22:35:18 +00:00
parent a460c4bfc1
commit 70894b2feb
46 changed files with 1067 additions and 83 deletions
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4
Makefile.in
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@ -1,7 +1,7 @@
# #
# VTun - Virtual Tunnel over TCP/IP network. # VTun - Virtual Tunnel over TCP/IP network.
# #
# Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> # Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
# #
# VTun has been derived from VPPP package by Maxim Krasnyansky. # VTun has been derived from VPPP package by Maxim Krasnyansky.
# #
@ -15,7 +15,7 @@
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details. # GNU General Public License for more details.
# #
# $Id: Makefile.in,v 1.11.2.2 2008/01/07 22:12:57 mtbishop Exp $ # $Id: Makefile.in,v 1.11.2.3 2008/01/07 22:35:55 mtbishop Exp $
# #
CC = @CC@ CC = @CC@
CFLAGS = @CFLAGS@ @CPPFLAGS@ CFLAGS = @CFLAGS@ @CPPFLAGS@

63
README Normal file
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@ -0,0 +1,63 @@
VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit. (http://www.openssl.org/).
Copyright (c) 1998-2004 The OpenSSL Project. All rights reserved.
Compilation and Installation:
In order to compile VTun you need several software packages.
Required packages:
- Good C compiler (gcc, egcs, etc)
- Lexical Analyzer (flex, lex)
- YACC (yacc, bison, byacc)
- Universal TUN/TAP driver http://vtun.sourceforge.net/tun
- OpenSSL encryption library http://www.openssl.org
Optional packages:
- Zlib compression library http://www.gzip.org/zlib/
- LZO compression library http://www.oberhumer.com/opensource/lzo/
- SOCKS library:
Socks5 by NEC (recommended) http://www.socks.nec.com
Dante Socks4/5 http://www.inet.no/dante
To configure VTun run:
./configure
Optional support:
--disable-lzo compile without LZO compression support
--disable-zlib compile without ZLIB compression support
--disable-shaper compile without Traffic shaping support
--enable-socks compile with SOCKS support
Configure automatically searches for all required library and header
files. However you might need to specify location of the files which
could not be found in default location:
SSL(Crypto) library:
--with-ssl-lib=/path/to/library (libcrypto.a)
--with-ssl-headers=/path/to/headers (md5.h blowfish.h)
LZO library:
--with-lzo-lib=/path/to/library (liblzo.a)
--with-lzo-headers=/path/to/headers (lzo1x.h)
SOCKS library:
--with-socks-lib=/path/to/library (libsocks.a or libsocks5.a)
To compile and install run:
make install
Read manual page for 'vtund' and the config file example for
configuration and other suggestions.
VTun has the mailing list vtun-users@lists.sourceforge.net
To receive information about mailing list and how to subscribe to it,
send an e-mail to vtun-users-request@lists.sourceforge.net with the
word 'help' in the Subject.
If you have any suggestions, ideas, wishes send them to
vtun-users@lists.sourceforge.net
Vtun (c) Maxim Krasnyansky
Maintained loosely by Bishop Clark <bishop@platypus.bc.ca>

4
auth.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: auth.c,v 1.9.2.2 2008/01/07 22:12:48 mtbishop Exp $ * $Id: auth.c,v 1.9.2.3 2008/01/07 22:35:18 mtbishop Exp $
*/ */
/* /*

4
auth.h
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: auth.h,v 1.3.2.1 2007/06/29 05:25:47 mtbishop Exp $ * $Id: auth.h,v 1.3.2.2 2008/01/07 22:35:19 mtbishop Exp $
*/ */
#define VTUN_CHAL_SIZE 16 #define VTUN_CHAL_SIZE 16

4
cfg_file.l
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@ -2,7 +2,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -18,7 +18,7 @@
*/ */
/* /*
* $Id: cfg_file.l,v 1.4.2.1 2007/06/29 05:25:49 mtbishop Exp $ * $Id: cfg_file.l,v 1.4.2.2 2008/01/07 22:35:21 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
cfg_file.y
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@ -2,7 +2,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -18,7 +18,7 @@
*/ */
/* /*
* $Id: cfg_file.y,v 1.8.2.1 2007/06/29 05:25:51 mtbishop Exp $ * $Id: cfg_file.y,v 1.8.2.2 2008/01/07 22:35:22 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
cfg_kwords.h
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: cfg_kwords.h,v 1.6.2.1 2007/06/29 05:25:53 mtbishop Exp $ * $Id: cfg_kwords.h,v 1.6.2.2 2008/01/07 22:35:26 mtbishop Exp $
*/ */
extern int lineno; extern int lineno;

4
client.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: client.c,v 1.11.2.1 2007/06/29 05:25:57 mtbishop Exp $ * $Id: client.c,v 1.11.2.2 2008/01/07 22:35:27 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
compat.h
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: compat.h,v 1.3.2.1 2007/06/29 05:25:59 mtbishop Exp $ * $Id: compat.h,v 1.3.2.2 2008/01/07 22:35:29 mtbishop Exp $
*/ */
#ifndef _VTUN_COMPAT_H #ifndef _VTUN_COMPAT_H
#define _VTUN_COMPAT_H #define _VTUN_COMPAT_H

4
driver.h
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: driver.h,v 1.4.2.1 2007/06/29 05:26:03 mtbishop Exp $ * $Id: driver.h,v 1.4.2.2 2008/01/07 22:35:30 mtbishop Exp $
*/ */
#ifndef _DRIVER_H #ifndef _DRIVER_H
#define _DRIVER_H #define _DRIVER_H

4
freebsd/tun_dev.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tun_dev.c,v 1.5.2.1 2007/06/29 05:26:53 mtbishop Exp $ * $Id: tun_dev.c,v 1.5.2.2 2008/01/07 22:36:10 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/pipe_dev.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: pipe_dev.c,v 1.4.2.1 2007/06/29 05:26:55 mtbishop Exp $ * $Id: pipe_dev.c,v 1.4.2.2 2008/01/07 22:36:12 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/pty_dev.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: pty_dev.c,v 1.4.2.1 2007/06/29 05:26:57 mtbishop Exp $ * $Id: pty_dev.c,v 1.4.2.2 2008/01/07 22:36:13 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/tap_dev.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tap_dev.c,v 1.5.2.1 2007/06/29 05:26:59 mtbishop Exp $ * $Id: tap_dev.c,v 1.5.2.2 2008/01/07 22:36:15 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/tcp_proto.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tcp_proto.c,v 1.7.2.1 2007/06/29 05:27:02 mtbishop Exp $ * $Id: tcp_proto.c,v 1.7.2.2 2008/01/07 22:36:16 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/tun_dev.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tun_dev.c,v 1.5.2.1 2007/06/29 05:27:06 mtbishop Exp $ * $Id: tun_dev.c,v 1.5.2.2 2008/01/07 22:36:18 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
generic/udp_proto.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: udp_proto.c,v 1.10.2.1 2007/06/29 05:27:09 mtbishop Exp $ * $Id: udp_proto.c,v 1.10.2.2 2008/01/07 22:36:19 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

761
lfd_encrypt.c Normal file
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@ -0,0 +1,761 @@
/*
VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky.
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
Encryption module uses software developed by the OpenSSL Project
for use in the OpenSSL Toolkit. (http://www.openssl.org/)
Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved.
*/
/*
* This lfd_encrypt module uses MD5 to create 128 bits encryption
* keys and BlowFish for actual data encryption.
* It is based on code written by Chris Todd<christ@insynq.com> with
* several improvements and modifications by me.
*/
/*
* The current lfd_encrypt module is based on code attributed above and
* uses new code written by Dale Fountain <dpf-vtun@fountainbay.com> to
* allow multiple ciphers, modes, and key sizes. Feb 2004.
*/
#include "config.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <syslog.h>
#include <strings.h>
#include <string.h>
#include <time.h>
#include "vtun.h"
#include "linkfd.h"
#include "lib.h"
#ifdef HAVE_SSL
/* OpenSSL includes */
#include <openssl/evp.h>
#include <openssl/md5.h>
#include <openssl/blowfish.h>
#include <openssl/rand.h>
/*
* #define LFD_ENCRYPT_DEBUG
*/
#define ENC_BUF_SIZE VTUN_FRAME_SIZE + 128
#define ENC_KEY_SIZE 16
BF_KEY key;
char * enc_buf;
char * dec_buf;
#define CIPHER_INIT 0
#define CIPHER_CODE 1
#define CIPHER_SEQUENCE 2
#define CIPHER_REQ_INIT 3
struct vtun_host *phost;
extern int send_a_packet;
/* out of sync packet threshold before forcing a re-init */
#define MAX_GIBBERISH 10
#define MIN_GIBBERISH 1
#define MAX_GIBBERISH_TIME 2
int gibberish;
time_t gib_time_start;
int cipher_enc_state;
int cipher_dec_state;
int cipher;
int blocksize;
int keysize;
int enc_init_first_time;
int dec_init_first_time;
unsigned long sequence_num;
char * pkey;
char * iv_buf;
EVP_CIPHER_CTX ctx_enc; /* encrypt */
EVP_CIPHER_CTX ctx_dec; /* decrypt */
EVP_CIPHER_CTX ctx_enc_ecb; /* sideband ecb encrypt */
EVP_CIPHER_CTX ctx_dec_ecb; /* sideband ecb decrypt */
int prep_key(char **key, int size, struct vtun_host *host)
{
int tmplen, halflen;
char *hashkey;
if ( !(hashkey = malloc(size)) )
{
vtun_syslog(LOG_ERR,"Can't allocate buffer for key hash");
return -1;
}
memset(hashkey,0,size);
if (size == 32)
{
tmplen = strlen(host->passwd);
if (tmplen != 0) halflen = tmplen>>1;
else halflen = 0;
MD5(host->passwd, halflen, hashkey);
MD5((host->passwd)+halflen, tmplen-halflen, hashkey+16);
}
else if (size == 16)
{
MD5(host->passwd,strlen(host->passwd), hashkey);
}
else
{
/* don't know what to do */
free(hashkey);
*key = NULL;
return -1;
}
*key = hashkey;
return 0;
}
void free_key (char *key)
{
free(key);
}
int alloc_encrypt(struct vtun_host *host)
{
int sb_init = 0;
int var_key = 0;
const EVP_CIPHER *cipher_type;
char tmpstr[64];
char cipher_name[32];
EVP_CIPHER_CTX *pctx_enc;
EVP_CIPHER_CTX *pctx_dec;
enc_init_first_time = 1;
dec_init_first_time = 1;
if( !(enc_buf = lfd_alloc(ENC_BUF_SIZE)) ){
vtun_syslog(LOG_ERR,"Can't allocate buffer for encryptor");
return -1;
}
if( !(dec_buf = lfd_alloc(ENC_BUF_SIZE)) ){
vtun_syslog(LOG_ERR,"Can't allocate buffer for decryptor");
return -1;
}
RAND_bytes((char *)&sequence_num, 4);
gibberish = 0;
gib_time_start = 0;
phost = host;
cipher = host->cipher;
switch(cipher)
{
case VTUN_ENC_AES256OFB:
case VTUN_ENC_AES256CFB:
case VTUN_ENC_AES256CBC:
blocksize = 16;
keysize = 32;
sb_init = 1;
cipher_type = EVP_aes_256_ecb();
pctx_enc = &ctx_enc_ecb;
pctx_dec = &ctx_dec_ecb;
break;
case VTUN_ENC_AES256ECB:
blocksize = 16;
keysize = 32;
pctx_enc = &ctx_enc;
pctx_dec = &ctx_dec;
cipher_type = EVP_aes_256_ecb();
strcpy(cipher_name,"AES-256-ECB");
break;
case VTUN_ENC_AES128OFB:
case VTUN_ENC_AES128CFB:
case VTUN_ENC_AES128CBC:
blocksize = 16;
keysize = 16;
sb_init=1;
cipher_type = EVP_aes_128_ecb();
pctx_enc = &ctx_enc_ecb;
pctx_dec = &ctx_dec_ecb;
break;
case VTUN_ENC_AES128ECB:
blocksize = 16;
keysize = 16;
pctx_enc = &ctx_enc;
pctx_dec = &ctx_dec;
cipher_type = EVP_aes_128_ecb();
strcpy(cipher_name,"AES-128-ECB");
break;
case VTUN_ENC_BF256OFB:
case VTUN_ENC_BF256CFB:
case VTUN_ENC_BF256CBC:
blocksize = 8;
keysize = 32;
var_key = 1;
sb_init = 1;
cipher_type = EVP_bf_ecb();
pctx_enc = &ctx_enc_ecb;
pctx_dec = &ctx_dec_ecb;
break;
case VTUN_ENC_BF256ECB:
blocksize = 8;
keysize = 32;
var_key = 1;
pctx_enc = &ctx_enc;
pctx_dec = &ctx_dec;
cipher_type = EVP_bf_ecb();
strcpy(cipher_name,"Blowfish-256-ECB");
break;
case VTUN_ENC_BF128OFB:
case VTUN_ENC_BF128CFB:
case VTUN_ENC_BF128CBC:
blocksize = 8;
keysize = 16;
var_key = 1;
sb_init = 1;
cipher_type = EVP_bf_ecb();
pctx_enc = &ctx_enc_ecb;
pctx_dec = &ctx_dec_ecb;
break;
case VTUN_ENC_BF128ECB: /* blowfish 128 ecb is the default */
default:
blocksize = 8;
keysize = 16;
var_key = 1;
pctx_enc = &ctx_enc;
pctx_dec = &ctx_dec;
cipher_type = EVP_bf_ecb();
strcpy(cipher_name,"Blowfish-128-ECB");
break;
} /* switch(host->cipher) */
if (prep_key(&pkey, keysize, host) != 0) return -1;
EVP_CIPHER_CTX_init(pctx_enc);
EVP_CIPHER_CTX_init(pctx_dec);
EVP_EncryptInit_ex(pctx_enc, cipher_type, NULL, NULL, NULL);
EVP_DecryptInit_ex(pctx_dec, cipher_type, NULL, NULL, NULL);
if (var_key)
{
EVP_CIPHER_CTX_set_key_length(pctx_enc, keysize);
EVP_CIPHER_CTX_set_key_length(pctx_dec, keysize);
}
EVP_EncryptInit_ex(pctx_enc, NULL, NULL, pkey, NULL);
EVP_DecryptInit_ex(pctx_dec, NULL, NULL, pkey, NULL);
EVP_CIPHER_CTX_set_padding(pctx_enc, 0);
EVP_CIPHER_CTX_set_padding(pctx_dec, 0);
if (sb_init)
{
cipher_enc_state=CIPHER_INIT;
cipher_dec_state=CIPHER_INIT;
}
else
{
cipher_enc_state=CIPHER_CODE;
cipher_dec_state=CIPHER_CODE;
sprintf(tmpstr,"%s encryption initialized", cipher_name);
vtun_syslog(LOG_INFO, tmpstr);
}
return 0;
}
int free_encrypt()
{
free_key(pkey); pkey = NULL;
lfd_free(enc_buf); enc_buf = NULL;
lfd_free(dec_buf); dec_buf = NULL;
EVP_CIPHER_CTX_cleanup(&ctx_enc);
EVP_CIPHER_CTX_cleanup(&ctx_dec);
EVP_CIPHER_CTX_cleanup(&ctx_enc_ecb);
EVP_CIPHER_CTX_cleanup(&ctx_dec_ecb);
return 0;
}
int encrypt_buf(int len, char *in, char **out)
{
register int pad, p, msg_len;
int outlen;
char *in_ptr, *out_ptr = enc_buf;
msg_len = send_msg(len, in, out);
in = *out;
in_ptr = in+msg_len;
memcpy(out_ptr,in,msg_len);
out_ptr += msg_len;
send_ib_mesg(&len, &in_ptr);
if (!len) return 0;
/* ( len % blocksize ) */
p = (len & (blocksize-1)); pad = blocksize - p;
memset(in_ptr+len, pad, pad);
outlen=len+pad;
if (pad == blocksize)
RAND_bytes(in_ptr+len, blocksize-1);
EVP_EncryptUpdate(&ctx_enc, out_ptr, &outlen, in_ptr, len+pad);
*out = enc_buf;
sequence_num++;
return outlen+msg_len;
}
int decrypt_buf(int len, char *in, char **out)
{
register int pad;
char *tmp_ptr, *in_ptr, *out_ptr = dec_buf;
int outlen;
len = recv_msg(len, in, out);
in = *out;
in_ptr = in;
outlen=len;
if (!len) return 0;
EVP_DecryptUpdate(&ctx_dec, out_ptr, &outlen, in_ptr, len);
recv_ib_mesg(&outlen, &out_ptr);
if (!outlen) return 0;
tmp_ptr = out_ptr + outlen; tmp_ptr--;
pad = *tmp_ptr;
if (pad < 1 || pad > blocksize) {
vtun_syslog(LOG_INFO, "decrypt_buf: bad pad length");
return 0;
}
*out = out_ptr;
return outlen - pad;
}
int cipher_enc_init(char * iv)
{
int var_key = 0;
const EVP_CIPHER *cipher_type;
char tmpstr[64];
char cipher_name[32];
switch(cipher)
{
case VTUN_ENC_AES256OFB:
cipher_type = EVP_aes_256_ofb();
strcpy(cipher_name, "AES-256-OFB");
break;
case VTUN_ENC_AES256CFB:
cipher_type = EVP_aes_256_cfb();
strcpy(cipher_name, "AES-256-CFB");
break;
case VTUN_ENC_AES256CBC:
cipher_type = EVP_aes_256_cbc();
strcpy(cipher_name, "AES-256-CBC");
break;
case VTUN_ENC_AES128OFB:
cipher_type = EVP_aes_128_ofb();
strcpy(cipher_name, "AES-128-OFB");
break;
case VTUN_ENC_AES128CFB:
cipher_type = EVP_aes_128_cfb();
strcpy(cipher_name, "AES-128-CFB");
break;
case VTUN_ENC_AES128CBC:
cipher_type = EVP_aes_128_cbc();
strcpy(cipher_name, "AES-128-CBC");
break;
case VTUN_ENC_BF256OFB:
var_key = 1;
cipher_type = EVP_bf_ofb();
strcpy(cipher_name, "Blowfish-256-OFB");
break;
case VTUN_ENC_BF256CFB:
var_key = 1;
cipher_type = EVP_bf_cfb();
strcpy(cipher_name, "Blowfish-256-CFB");
break;
case VTUN_ENC_BF256CBC:
var_key = 1;
cipher_type = EVP_bf_cbc();
strcpy(cipher_name, "Blowfish-256-CBC");
break;
case VTUN_ENC_BF128OFB:
var_key = 1;
cipher_type = EVP_bf_ofb();
strcpy(cipher_name, "Blowfish-128-OFB");
break;
case VTUN_ENC_BF128CFB:
var_key = 1;
cipher_type = EVP_bf_cfb();
strcpy(cipher_name, "Blowfish-128-CFB");
break;
case VTUN_ENC_BF128CBC:
var_key = 1;
cipher_type = EVP_bf_cbc();
strcpy(cipher_name, "Blowfish-128-CBC");
break;
default:
/* if we're here, something weird's going on */
return -1;
break;
} /* switch(cipher) */
EVP_CIPHER_CTX_init(&ctx_enc);
EVP_EncryptInit_ex(&ctx_enc, cipher_type, NULL, NULL, NULL);
if (var_key)
EVP_CIPHER_CTX_set_key_length(&ctx_enc, keysize);
EVP_EncryptInit_ex(&ctx_enc, NULL, NULL, pkey, NULL);
EVP_EncryptInit_ex(&ctx_enc, NULL, NULL, NULL, iv);
EVP_CIPHER_CTX_set_padding(&ctx_enc, 0);
if (enc_init_first_time)
{
sprintf(tmpstr,"%s encryption initialized", cipher_name);
vtun_syslog(LOG_INFO, tmpstr);
enc_init_first_time = 0;
}
return 0;
}
int cipher_dec_init(char * iv)
{
int var_key = 0;
const EVP_CIPHER *cipher_type;
char tmpstr[64];
char cipher_name[32];
switch(cipher)
{
case VTUN_ENC_AES256OFB:
cipher_type = EVP_aes_256_ofb();
strcpy(cipher_name, "AES-256-OFB");
break;
case VTUN_ENC_AES256CFB:
cipher_type = EVP_aes_256_cfb();
strcpy(cipher_name, "AES-256-CFB");
break;
case VTUN_ENC_AES256CBC:
cipher_type = EVP_aes_256_cbc();
strcpy(cipher_name, "AES-256-CBC");
break;
case VTUN_ENC_AES128OFB:
cipher_type = EVP_aes_128_ofb();
strcpy(cipher_name, "AES-128-OFB");
break;
case VTUN_ENC_AES128CFB:
cipher_type = EVP_aes_128_cfb();
strcpy(cipher_name, "AES-128-CFB");
break;
case VTUN_ENC_AES128CBC:
cipher_type = EVP_aes_128_cbc();
strcpy(cipher_name, "AES-128-CBC");
break;
case VTUN_ENC_BF256OFB:
var_key = 1;
cipher_type = EVP_bf_ofb();
strcpy(cipher_name, "Blowfish-256-OFB");
break;
case VTUN_ENC_BF256CFB:
var_key = 1;
cipher_type = EVP_bf_cfb();
strcpy(cipher_name, "Blowfish-256-CFB");
break;
case VTUN_ENC_BF256CBC:
var_key = 1;
cipher_type = EVP_bf_cbc();
strcpy(cipher_name, "Blowfish-256-CBC");
break;
case VTUN_ENC_BF128OFB:
var_key = 1;
cipher_type = EVP_bf_ofb();
strcpy(cipher_name, "Blowfish-128-OFB");
break;
case VTUN_ENC_BF128CFB:
var_key = 1;
cipher_type = EVP_bf_cfb();
strcpy(cipher_name, "Blowfish-128-CFB");
break;
case VTUN_ENC_BF128CBC:
var_key = 1;
cipher_type = EVP_bf_cbc();
strcpy(cipher_name, "Blowfish-128-CBC");
break;
default:
/* if we're here, something weird's going on */
return -1;
break;
} /* switch(cipher) */
EVP_CIPHER_CTX_init(&ctx_dec);
EVP_DecryptInit_ex(&ctx_dec, cipher_type, NULL, NULL, NULL);
if (var_key)
EVP_CIPHER_CTX_set_key_length(&ctx_dec, keysize);
EVP_DecryptInit_ex(&ctx_dec, NULL, NULL, pkey, NULL);
EVP_DecryptInit_ex(&ctx_dec, NULL, NULL, NULL, iv);
EVP_CIPHER_CTX_set_padding(&ctx_dec, 0);
if (dec_init_first_time)
{
sprintf(tmpstr,"%s decryption initialized", cipher_name);
vtun_syslog(LOG_INFO, tmpstr);
dec_init_first_time = 0;
}
return 0;
}
int send_msg(int len, char *in, char **out)
{
char * iv; char * in_ptr;
int outlen;
switch(cipher_enc_state)
{
case CIPHER_INIT:
in_ptr = in - blocksize*2;
iv = malloc(blocksize);
RAND_bytes(iv, blocksize);
strncpy(in_ptr,"ivec",4);
in_ptr += 4;
memcpy(in_ptr,iv,blocksize);
in_ptr += blocksize;
cipher_enc_init(iv);
memset(iv,0,blocksize); free(iv); iv = NULL;
RAND_bytes(in_ptr, in - in_ptr);
in_ptr = in - blocksize*2;
outlen = blocksize*2;
EVP_EncryptUpdate(&ctx_enc_ecb, in_ptr,
&outlen, in_ptr, blocksize*2);
*out = in_ptr;
len = outlen;
cipher_enc_state = CIPHER_SEQUENCE;
break;
case CIPHER_CODE:
default:
*out = in;
len = 0;
break;
}
return len;
}
int recv_msg(int len, char *in, char **out)
{
char * iv; char * in_ptr;
int outlen;
switch(cipher_dec_state)
{
case CIPHER_INIT:
in_ptr = in;
iv = malloc(blocksize);
outlen = blocksize*2;
EVP_DecryptUpdate(&ctx_dec_ecb, in_ptr, &outlen, in_ptr, blocksize*2);
if ( !strncmp(in_ptr, "ivec", 4) )
{
memcpy(iv, in_ptr+4, blocksize);
cipher_dec_init(iv);
*out = in_ptr + blocksize*2;
len -= blocksize*2;
cipher_dec_state = CIPHER_SEQUENCE;
gibberish = 0;
gib_time_start = 0;
}
else
{
len = 0;
*out = in;
gibberish++;
if (gibberish == 1) gib_time_start = time(NULL);
if (gibberish == MIN_GIBBERISH)
{
cipher_enc_state = CIPHER_REQ_INIT;
send_a_packet = 1;
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO,
"Min. gibberish threshold reached");
#endif
}
if (gibberish >= MAX_GIBBERISH ||
difftime(time(NULL), gib_time_start) >= MAX_GIBBERISH_TIME)
{
gibberish = 0;
gib_time_start = 0;
send_a_packet = 1;
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO,
"Max. gibberish threshold reached");
#endif
if (cipher_enc_state != CIPHER_INIT)
{
cipher_enc_state = CIPHER_INIT;
EVP_CIPHER_CTX_cleanup(&ctx_enc);
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO,
"Forcing local encryptor re-init");
#endif
}
}
}
memset(iv,0,blocksize); free(iv); iv = NULL;
memset(in_ptr,0,blocksize*2);
break;
case CIPHER_CODE:
default:
*out = in;
break;
}
return len;
}
/* Send In-Band Message */
int send_ib_mesg(int *len, char **in)
{
char *in_ptr = *in;
/* To simplify matters, I assume that blocksize
will not be less than 8 bytes */
if (cipher_enc_state == CIPHER_SEQUENCE)
{
in_ptr -= blocksize;
memset(in_ptr,0,blocksize);
strncpy(in_ptr,"seq#",4);
in_ptr+=4;
*((unsigned long *)in_ptr) = htonl(sequence_num);
in_ptr-=4;
*in = in_ptr;
*len += blocksize;
}
else if (cipher_enc_state == CIPHER_REQ_INIT)
{
in_ptr -= blocksize;
memset(in_ptr,0,blocksize);
strncpy(in_ptr,"rsyn",4);
in_ptr+=4;
*((unsigned long *)in_ptr) = htonl(sequence_num);
in_ptr-=4;
*in = in_ptr;
*len += blocksize;
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO, "Requesting remote encryptor re-init");
#endif
cipher_enc_state = CIPHER_SEQUENCE;
send_a_packet = 1;
}
return 0;
}
/* Receive In-Band Message */
int recv_ib_mesg(int *len, char **in)
{
char *in_ptr = *in;
if (cipher_dec_state == CIPHER_SEQUENCE)
{
/* To simplify matters, I assume that blocksize
will not be less than 8 bytes */
if ( !strncmp(in_ptr, "seq#", 4) )
{
*in += blocksize;
*len -= blocksize;
}
else if ( !strncmp(in_ptr, "rsyn", 4) )
{
*in += blocksize;
*len -= blocksize;
if (cipher_enc_state != CIPHER_INIT)
{
cipher_enc_state = CIPHER_INIT;
EVP_CIPHER_CTX_cleanup(&ctx_enc);
}
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO, "Remote requests encryptor re-init");
#endif
}
else
{
*len = 0;
if (cipher_dec_state != CIPHER_INIT &&
cipher_enc_state != CIPHER_REQ_INIT &&
cipher_enc_state != CIPHER_INIT)
{
EVP_CIPHER_CTX_cleanup (&ctx_dec);
cipher_dec_state = CIPHER_INIT;
cipher_enc_state = CIPHER_REQ_INIT;
}
#ifdef LFD_ENCRYPT_DEBUG
vtun_syslog(LOG_INFO, "Local decryptor out of sync");
#endif
}
}
return 0;
}
/*
* Module structure.
*/
struct lfd_mod lfd_encrypt = {
"Encryptor",
alloc_encrypt,
encrypt_buf,
NULL,
decrypt_buf,
NULL,
free_encrypt,
NULL,
NULL
};
#else /* HAVE_SSL */
int no_encrypt(struct vtun_host *host)
{
vtun_syslog(LOG_INFO, "Encryption is not supported");
return -1;
}
struct lfd_mod lfd_encrypt = {
"Encryptor",
no_encrypt, NULL, NULL, NULL, NULL, NULL, NULL, NULL
};
#endif /* HAVE_SSL */

4
lfd_legacy_encrypt.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lfd_legacy_encrypt.c,v 1.1.4.1 2008/01/07 22:12:53 mtbishop Exp $ * $Id: lfd_legacy_encrypt.c,v 1.1.4.2 2008/01/07 22:35:33 mtbishop Exp $
* Code added wholesale temporarily from lfd_encrypt 1.2.2.8 * Code added wholesale temporarily from lfd_encrypt 1.2.2.8
*/ */

4
lfd_lzo.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lfd_lzo.c,v 1.5.2.2 2007/06/29 05:26:06 mtbishop Exp $ * $Id: lfd_lzo.c,v 1.5.2.3 2008/01/07 22:35:35 mtbishop Exp $
*/ */
/* LZO compression module */ /* LZO compression module */

4
lfd_shaper.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lfd_shaper.c,v 1.7.2.1 2007/06/29 05:26:10 mtbishop Exp $ * $Id: lfd_shaper.c,v 1.7.2.2 2008/01/07 22:35:36 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
lfd_zlib.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lfd_zlib.c,v 1.5.2.1 2007/06/29 05:26:13 mtbishop Exp $ * $Id: lfd_zlib.c,v 1.5.2.2 2008/01/07 22:35:38 mtbishop Exp $
*/ */
/* ZLIB compression module */ /* ZLIB compression module */

4
lib.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lib.c,v 1.9.2.1 2007/06/29 05:26:15 mtbishop Exp $ * $Id: lib.c,v 1.9.2.2 2008/01/07 22:35:40 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
lib.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lib.h,v 1.7.2.1 2007/06/29 05:26:17 mtbishop Exp $ * $Id: lib.h,v 1.7.2.2 2008/01/07 22:35:41 mtbishop Exp $
*/ */
#ifndef _VTUN_LIB_H #ifndef _VTUN_LIB_H
#define _VTUN_LIB_H #define _VTUN_LIB_H

4
linkfd.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: linkfd.c,v 1.13.2.2 2008/01/07 22:12:54 mtbishop Exp $ * $Id: linkfd.c,v 1.13.2.3 2008/01/07 22:35:43 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
linkfd.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: linkfd.h,v 1.4.2.2 2008/01/07 22:12:56 mtbishop Exp $ * $Id: linkfd.h,v 1.4.2.3 2008/01/07 22:35:45 mtbishop Exp $
*/ */
#ifndef _LINKFD_H #ifndef _LINKFD_H

28
linux/tap_dev.c Normal file
View File

@ -0,0 +1,28 @@
/*
VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky.
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
* $Id: tap_dev.c,v 1.4.2.1 2008/01/07 22:36:21 mtbishop Exp $
*/
/*
This is an empty file. All functionality formerly here is moved
to the tun_dev.c file. This file exists to prevent the automangle
tools from moving a tap_dev.c from the generic directory - which
we can't use - in place of this missing file.
*/

132
linux/tun_dev.c Normal file
View File

@ -0,0 +1,132 @@
/*
VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky.
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
/*
* $Id: tun_dev.c,v 1.4.2.1 2008/01/07 22:36:22 mtbishop Exp $
*/
#include "config.h"
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <linux/if.h>
#include "vtun.h"
#include "lib.h"
/*
* Allocate TUN device, returns opened fd.
* Stores dev name in the first arg(must be large enough).
*/
static int tun_open_common0(char *dev, int istun)
{
char tunname[14];
int i, fd, err;
if( *dev ) {
sprintf(tunname, "/dev/%s", dev);
return open(tunname, O_RDWR);
}
sprintf(tunname, "/dev/%s", istun ? "tun" : "tap");
err = 0;
for(i=0; i < 255; i++){
sprintf(tunname + 8, "%d", i);
/* Open device */
if( (fd=open(tunname, O_RDWR)) > 0 ) {
strcpy(dev, tunname + 5);
return fd;
}
else if (errno != ENOENT)
err = errno;
else if (i) /* don't try all 256 devices */
break;
}
if (err)
errno = err;
return -1;
}
#ifdef HAVE_LINUX_IF_TUN_H /* New driver support */
#include <linux/if_tun.h>
#ifndef OTUNSETNOCSUM
/* pre 2.4.6 compatibility */
#define OTUNSETNOCSUM (('T'<< 8) | 200)
#define OTUNSETDEBUG (('T'<< 8) | 201)
#define OTUNSETIFF (('T'<< 8) | 202)
#define OTUNSETPERSIST (('T'<< 8) | 203)
#define OTUNSETOWNER (('T'<< 8) | 204)
#endif
static int tun_open_common(char *dev, int istun)
{
struct ifreq ifr;
int fd;
if ((fd = open("/dev/net/tun", O_RDWR)) < 0)
return tun_open_common0(dev, istun);
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = (istun ? IFF_TUN : IFF_TAP) | IFF_NO_PI;
if (*dev)
strncpy(ifr.ifr_name, dev, IFNAMSIZ);
if (ioctl(fd, TUNSETIFF, (void *) &ifr) < 0) {
if (errno == EBADFD) {
/* Try old ioctl */
if (ioctl(fd, OTUNSETIFF, (void *) &ifr) < 0)
goto failed;
} else
goto failed;
}
strcpy(dev, ifr.ifr_name);
return fd;
failed:
close(fd);
return -1;
}
#else
# define tun_open_common(dev, type) tun_open_common0(dev, type)
#endif /* New driver support */
int tun_open(char *dev) { return tun_open_common(dev, 1); }
int tap_open(char *dev) { return tun_open_common(dev, 0); }
int tun_close(int fd, char *dev) { return close(fd); }
int tap_close(int fd, char *dev) { return close(fd); }
/* Read/write frames from TUN device */
int tun_write(int fd, char *buf, int len) { return write(fd, buf, len); }
int tap_write(int fd, char *buf, int len) { return write(fd, buf, len); }
int tun_read(int fd, char *buf, int len) { return read(fd, buf, len); }
int tap_read(int fd, char *buf, int len) { return read(fd, buf, len); }

4
llist.c
View File

@ -2,7 +2,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -18,7 +18,7 @@
*/ */
/* /*
* $Id: llist.c,v 1.3.2.1 2007/06/29 05:26:23 mtbishop Exp $ * $Id: llist.c,v 1.3.2.2 2008/01/07 22:35:47 mtbishop Exp $
*/ */
#include <stdlib.h> #include <stdlib.h>

4
llist.h
View File

@ -2,7 +2,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -18,7 +18,7 @@
*/ */
/* /*
* $Id: llist.h,v 1.3.2.1 2007/06/29 05:26:25 mtbishop Exp $ * $Id: llist.h,v 1.3.2.2 2008/01/07 22:35:48 mtbishop Exp $
*/ */
#ifndef _VTUN_LLIST_H #ifndef _VTUN_LLIST_H

4
lock.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lock.c,v 1.6.2.1 2007/06/29 05:26:27 mtbishop Exp $ * $Id: lock.c,v 1.6.2.2 2008/01/07 22:35:50 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
lock.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: lock.h,v 1.3.2.1 2007/06/29 05:26:29 mtbishop Exp $ * $Id: lock.h,v 1.3.2.2 2008/01/07 22:35:51 mtbishop Exp $
*/ */
#ifndef _VTUN_LOCK_H #ifndef _VTUN_LOCK_H

4
main.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: main.c,v 1.9.2.1 2007/06/29 05:26:31 mtbishop Exp $ * $Id: main.c,v 1.9.2.2 2008/01/07 22:35:53 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
netlib.c
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@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: netlib.c,v 1.11.2.1 2007/06/29 05:26:35 mtbishop Exp $ * $Id: netlib.c,v 1.11.2.2 2008/01/07 22:35:56 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
netlib.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: netlib.h,v 1.5.2.1 2007/06/29 05:26:37 mtbishop Exp $ * $Id: netlib.h,v 1.5.2.2 2008/01/07 22:35:58 mtbishop Exp $
*/ */
#ifndef _VTUN_NETDEV_H #ifndef _VTUN_NETDEV_H

4
openbsd/tun_dev.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tun_dev.c,v 1.6.2.1 2007/06/29 05:27:13 mtbishop Exp $ * $Id: tun_dev.c,v 1.6.2.2 2008/01/07 22:36:24 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

2
packages/vtun.bsd.pkg
View File

@ -1,4 +1,4 @@
@name vtun-3.0.1 @name vtun-3.0.2
@owner root @owner root
@group wheel @group wheel

4
packages/vtun.solaris.info
View File

@ -1,10 +1,10 @@
PKG="vtun" PKG="vtun"
NAME="VTun - Virtual tunnels over TCP/IP" NAME="VTun - Virtual tunnels over TCP/IP"
VERSION="3.0.1" VERSION="3.0.2"
ARCH="i386" ARCH="i386"
VENDOR="Bishop Clark" VENDOR="Bishop Clark"
EMAIL="bishop@platypus.bc.ca" EMAIL="bishop@platypus.bc.ca"
CATEGORY="system" CATEGORY="system"
CLASSES="none" CLASSES="none"
PSTAMP="20070606" PSTAMP="20080107"
BASEDIR="/usr/local/" BASEDIR="/usr/local/"

4
packages/vtun.spec
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@ -1,4 +1,4 @@
# $Id: vtun.spec,v 1.24.2.4 2007/06/29 05:27:15 mtbishop Exp $ # $Id: vtun.spec,v 1.24.2.5 2008/01/07 22:36:28 mtbishop Exp $
# By default, builds without socks-support. # By default, builds without socks-support.
# To build with socks-support, issue: # To build with socks-support, issue:
@ -14,7 +14,7 @@
# define variables here for older RPM versions. # define variables here for older RPM versions.
%define name vtun %define name vtun
%define version 3.0.1 %define version 3.0.2
%define release 1 %define release 1
# expansion of the previous part. # expansion of the previous part.

4
server.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: server.c,v 1.9.2.1 2007/06/29 05:26:39 mtbishop Exp $ * $Id: server.c,v 1.9.2.2 2008/01/07 22:36:01 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
svr4/tap_dev.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tap_dev.c,v 1.4.2.1 2007/06/29 05:27:20 mtbishop Exp $ * $Id: tap_dev.c,v 1.4.2.2 2008/01/07 22:36:30 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
svr4/tun_dev.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tun_dev.c,v 1.5.2.1 2007/06/29 05:27:23 mtbishop Exp $ * $Id: tun_dev.c,v 1.5.2.2 2008/01/07 22:36:31 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
tunnel.c
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: tunnel.c,v 1.14.2.1 2007/06/29 05:26:41 mtbishop Exp $ * $Id: tunnel.c,v 1.14.2.2 2008/01/07 22:36:03 mtbishop Exp $
*/ */
#include "config.h" #include "config.h"

4
vtun.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: vtun.h,v 1.12.2.2 2008/01/07 22:12:59 mtbishop Exp $ * $Id: vtun.h,v 1.12.2.3 2008/01/07 22:36:07 mtbishop Exp $
*/ */
#ifndef _VTUN_H #ifndef _VTUN_H

4
vtun_socks.h
View File

@ -1,7 +1,7 @@
/* /*
VTun - Virtual Tunnel over TCP/IP network. VTun - Virtual Tunnel over TCP/IP network.
Copyright (C) 1998-2000 Maxim Krasnyansky <max_mk@yahoo.com> Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
VTun has been derived from VPPP package by Maxim Krasnyansky. VTun has been derived from VPPP package by Maxim Krasnyansky.
@ -17,7 +17,7 @@
*/ */
/* /*
* $Id: vtun_socks.h,v 1.3.2.1 2007/06/29 05:26:51 mtbishop Exp $ * $Id: vtun_socks.h,v 1.3.2.2 2008/01/07 22:36:08 mtbishop Exp $
*/ */
#ifndef _VTUN_SOCKS_H #ifndef _VTUN_SOCKS_H

4
vtund.conf
View File

@ -1,12 +1,12 @@
# #
# VTun - Virtual Tunnel over TCP/IP network. # VTun - Virtual Tunnel over TCP/IP network.
# Copyright (C) 1998-2001 Maxim Krasnyansky <max_mk@yahoo.com> # Copyright (C) 1998-2008 Maxim Krasnyansky <max_mk@yahoo.com>
# #
# Cleanup of English and spelling by # Cleanup of English and spelling by
# Ted Rolle <ted@acacia.datacomm.com> # Ted Rolle <ted@acacia.datacomm.com>
# #
# Configuration file example # Configuration file example
# $Id: vtund.conf,v 1.4.2.1 2007/06/29 05:26:45 mtbishop Exp $ # $Id: vtund.conf,v 1.4.2.2 2008/01/07 22:36:05 mtbishop Exp $
# #
# #
# Lines which begin with '#' are comments # Lines which begin with '#' are comments