1 |
pcg |
1.1 |
/* |
2 |
|
|
global.h -- global variables and constants |
3 |
pcg |
1.24 |
Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 |
pcg |
1.1 |
|
5 |
pcg |
1.19 |
This file is part of GVPE. |
6 |
|
|
|
7 |
pcg |
1.24 |
GVPE is free software; you can redistribute it and/or modify it |
8 |
|
|
under the terms of the GNU General Public License as published by the |
9 |
|
|
Free Software Foundation; either version 3 of the License, or (at your |
10 |
|
|
option) any later version. |
11 |
|
|
|
12 |
|
|
This program is distributed in the hope that it will be useful, but |
13 |
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of |
14 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
15 |
|
|
Public License for more details. |
16 |
|
|
|
17 |
|
|
You should have received a copy of the GNU General Public License along |
18 |
|
|
with this program; if not, see <http://www.gnu.org/licenses/>. |
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. |
30 |
pcg |
1.1 |
*/ |
31 |
|
|
|
32 |
|
|
#ifndef GLOBAL_H__ |
33 |
|
|
#define GLOBAL_H__ |
34 |
|
|
|
35 |
|
|
#include "config.h" |
36 |
|
|
|
37 |
|
|
#include <time.h> |
38 |
|
|
|
39 |
pcg |
1.8 |
/* Protocol version. Different major versions are incompatible, |
40 |
|
|
* different minor versions probably are compatible ;) |
41 |
|
|
*/ |
42 |
|
|
|
43 |
|
|
#define PROTOCOL_MAJOR 0 |
44 |
pcg |
1.12 |
#define PROTOCOL_MINOR 1 |
45 |
pcg |
1.1 |
|
46 |
|
|
#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 |
47 |
|
|
#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) |
48 |
pcg |
1.6 |
#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl |
49 |
pcg |
1.1 |
|
50 |
pcg |
1.6 |
#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( |
51 |
|
|
#define RSA_HASHLEN (160 >> 3) |
52 |
pcg |
1.7 |
#define RSA_RESLEN RSA_HASHLEN |
53 |
pcg |
1.6 |
|
54 |
|
|
#define RSA_IDLEN 16 // how many bytes are used to identify the challenge |
55 |
pcg |
1.14 |
#define RSA_TTL 120 // challenge bytes timeout after n seconds |
56 |
pcg |
1.1 |
|
57 |
|
|
#define CIPHER ENABLE_CIPHER () |
58 |
|
|
#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) |
59 |
|
|
#define DIGEST ENABLE_DIGEST () |
60 |
|
|
#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) |
61 |
|
|
|
62 |
pcg |
1.22 |
#define WINDOWSIZE 512 // sliding window size |
63 |
pcg |
1.21 |
#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8) |
64 |
pcg |
1.1 |
|
65 |
|
|
#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge |
66 |
|
|
#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge |
67 |
|
|
#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) |
68 |
|
|
|
69 |
pcg |
1.22 |
// hdr seq len hmac MAC MAC |
70 |
|
|
#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
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) |
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 |
76 |
|
|
#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) |
77 |
|
|
#define ETH_OVERHEAD 14 // the size of an ethernet header |
78 |
|
|
#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares |
79 |
pcg |
1.1 |
|
80 |
pcg |
1.23 |
#define PKTCACHESIZE 16 // the size of the memory pool for packets |
81 |
pcg |
1.2 |
|
82 |
pcg |
1.1 |
extern char *confbase; // directory in which all config files are |
83 |
|
|
extern char *thisnode; // config for current node (TODO: remove) |
84 |
|
|
|
85 |
|
|
#endif |
86 |
|
|
|