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Comparing gvpe/src/global.h (file contents):
Revision 1.5 by pcg, Sat Mar 22 02:35:57 2003 UTC vs.
Revision 1.20 by pcg, Tue Apr 26 00:55:56 2005 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2005 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
5 it under the terms of the GNU General Public License as published by 8 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or 9 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version. 10 (at your 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,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 but 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
12 GNU General Public License for more details. 15 GNU General 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
15 along with this program; if not, write to the Free Software 18 along with gvpe; if not, write to the Free Software
16 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17*/ 20*/
18 21
19#ifndef GLOBAL_H__ 22#ifndef GLOBAL_H__
20#define GLOBAL_H__ 23#define GLOBAL_H__
21 24
22#include "config.h" 25#include "config.h"
23 26
24#include <time.h> 27#include <time.h>
25 28
29/* Protocol version. Different major versions are incompatible,
30 * different minor versions probably are compatible ;)
31 */
32
33#define PROTOCOL_MAJOR 0
34#define PROTOCOL_MINOR 1
26 35
27#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 36#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8
28#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) 37#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
29#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP 38#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
30 39
40#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :(
41#define RSA_HASHLEN (160 >> 3)
42#define RSA_RESLEN RSA_HASHLEN
43
44#define RSA_IDLEN 16 // how many bytes are used to identify the challenge
31#define CHALLENGE_TTL 30 // challenge bytes timeout after n seconds 45#define RSA_TTL 120 // challenge bytes timeout after n seconds
32 46
33#define CIPHER ENABLE_CIPHER () 47#define CIPHER ENABLE_CIPHER ()
34#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 48#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER))
35#define DIGEST ENABLE_DIGEST () 49#define DIGEST ENABLE_DIGEST ()
36#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) 50#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
37 51
38#define MAX_SEQNO 0xfffff000U 52#define MAX_SEQNO 0xfffffff0U
39 53
40#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 54#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge
41#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 55#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge
42#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) 56#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
43 57
44// hdr seq len hmac MAC MAC 58// hdr seq len hmac MAC MAC
45#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 59#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
46#define UDP_OVERHEAD 40 // size of a (normal) ip + udp header 60#define IP_OVERHEAD 20 // size of a (normal) ip header
61#define GRE_OVERHEAD (IP_OVERHEAD + 4)
62#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
63#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
64#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
65#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
47#define ETH_OVERHEAD 14 // the size of an ethernet header 66#define ETH_OVERHEAD 14 // the size of an ethernet header
48#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares 67#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares
49 68
50#define PKTCACHESIZE 4 // the size of the memory pool for packets 69#define PKTCACHESIZE 5 // the size of the memory pool for packets
51 70
52#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) 71#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low)
53 72
54#define WINDOWSIZE 512 // sliding window size 73#define WINDOWSIZE 512 // sliding window size
55 74
56extern char *confbase; // directory in which all config files are 75extern char *confbase; // directory in which all config files are
57extern char *thisnode; // config for current node (TODO: remove) 76extern char *thisnode; // config for current node (TODO: remove)
58extern char *pidfilename; // pid file location
59 77
60#endif 78#endif
61 79

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