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Comparing gvpe/src/global.h (file contents):
Revision 1.7 by pcg, Wed Mar 26 14:39:52 2003 UTC vs.
Revision 1.24 by pcg, Thu Aug 7 17:54:27 2008 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de>
3 4
5 This file is part of GVPE.
6
4 This program is free software; you can redistribute it and/or modify 7 GVPE is free software; you can redistribute it and/or modify it
5 it under the terms of the GNU General Public License as published by 8 under the terms of the GNU General Public License as published by the
6 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
7 (at your option) any later version. 10 option) any later version.
8 11
9 This program is distributed in the hope that it will be useful, 12 This program is distributed in the hope that it will be useful, but
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
12 GNU General Public License for more details. 15 Public License for more details.
13 16
14 You should have received a copy of the GNU General Public License 17 You should have received a copy of the GNU General Public License along
15 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
16 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19
20 Additional permission under GNU GPL version 3 section 7
21
22 If you modify this Program, or any covered work, by linking or
23 combining it with the OpenSSL project's OpenSSL library (or a modified
24 version of that library), containing parts covered by the terms of the
25 OpenSSL or SSLeay licenses, the licensors of this Program grant you
26 additional permission to convey the resulting work. Corresponding
27 Source for a non-source form of such a combination shall include the
28 source code for the parts of OpenSSL used as well as that of the
29 covered work.
17*/ 30*/
18 31
19#ifndef GLOBAL_H__ 32#ifndef GLOBAL_H__
20#define GLOBAL_H__ 33#define GLOBAL_H__
21 34
22#include "config.h" 35#include "config.h"
23 36
24#include <time.h> 37#include <time.h>
25 38
39/* Protocol version. Different major versions are incompatible,
40 * different minor versions probably are compatible ;)
41 */
42
43#define PROTOCOL_MAJOR 0
44#define PROTOCOL_MINOR 1
26 45
27#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 46#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8
28#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) 47#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
29#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl 48#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
30 49
31#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 50#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :(
32#define RSA_HASHLEN (160 >> 3) 51#define RSA_HASHLEN (160 >> 3)
33#define RSA_RESLEN RSA_HASHLEN 52#define RSA_RESLEN RSA_HASHLEN
34 53
35#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 54#define RSA_IDLEN 16 // how many bytes are used to identify the challenge
36#define RSA_TTL 20 // challenge bytes timeout after n seconds 55#define RSA_TTL 120 // challenge bytes timeout after n seconds
37 56
38#define CIPHER ENABLE_CIPHER () 57#define CIPHER ENABLE_CIPHER ()
39#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 58#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER))
40#define DIGEST ENABLE_DIGEST () 59#define DIGEST ENABLE_DIGEST ()
41#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) 60#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
42 61
62#define WINDOWSIZE 512 // sliding window size
43#define MAX_SEQNO 0xfffffff0U 63#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
44 64
45#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 65#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge
46#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 66#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge
47#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) 67#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
48 68
49// hdr seq len hmac MAC MAC 69// hdr seq len hmac MAC MAC
50#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 70#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
51#define IP_OVERHEAD 20 // size of a (normal) ip header 71#define IP_OVERHEAD 20 // size of a (normal) ip header
72#define GRE_OVERHEAD (IP_OVERHEAD + 4)
73#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
52#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header 74#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
75#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
53#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol 76#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
54#define ETH_OVERHEAD 14 // the size of an ethernet header 77#define ETH_OVERHEAD 14 // the size of an ethernet header
55#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares 78#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares
56 79
57#define PKTCACHESIZE 4 // the size of the memory pool for packets 80#define PKTCACHESIZE 16 // the size of the memory pool for packets
58
59#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low)
60
61#define WINDOWSIZE 512 // sliding window size
62 81
63extern char *confbase; // directory in which all config files are 82extern char *confbase; // directory in which all config files are
64extern char *thisnode; // config for current node (TODO: remove) 83extern char *thisnode; // config for current node (TODO: remove)
65extern char *pidfilename; // pid file location
66 84
67#endif 85#endif
68 86

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