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Comparing gvpe/src/global.h (file contents):
Revision 1.8 by pcg, Wed Apr 2 03:06:22 2003 UTC vs.
Revision 1.26 by root, Sat Jul 13 04:10:29 2013 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003-2013 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
… …
26/* Protocol version. Different major versions are incompatible, 39/* Protocol version. Different major versions are incompatible,
27 * different minor versions probably are compatible ;) 40 * different minor versions probably are compatible ;)
28 */ 41 */
29 42
30#define PROTOCOL_MAJOR 0 43#define PROTOCOL_MAJOR 0
31#define PROTOCOL_MINOR 0 44#define PROTOCOL_MINOR 1
45
46#define SEED_SIZE 64 // how many octets to seed rng with
32 47
33#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 48#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8
34#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) 49#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
35#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl 50#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
36 51
37#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 52#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :(
38#define RSA_HASHLEN (160 >> 3) 53#define RSA_HASHLEN (160 >> 3)
39#define RSA_RESLEN RSA_HASHLEN 54#define RSA_RESLEN RSA_HASHLEN
40 55
41#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 56#define RSA_IDLEN 16 // how many bytes are used to identify the challenge
42#define RSA_TTL 20 // challenge bytes timeout after n seconds 57#define RSA_TTL 120 // challenge bytes timeout after n seconds
43 58
44#define CIPHER ENABLE_CIPHER () 59#define CIPHER ENABLE_CIPHER ()
45#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 60#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER))
46#define DIGEST ENABLE_DIGEST () 61#define DIGEST ENABLE_DIGEST ()
47#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) 62#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key
48 63
64#define WINDOWSIZE 512 // sliding window size
49#define MAX_SEQNO 0xfffffff0U 65#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
50 66
51#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 67#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge
52#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 68#define CHG_CIPHER_KEY (CHG_SEQNO + 4) // where the key starts within the rsa challenge
69//#define CHG_HMAC_KEY (CHG_CIPHER_KEY + CIPHER_KEYLEN) // where the key starts within the rsa challenge
53#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) 70#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge
71// 872 rsa bits used
54 72
55// hdr seq len hmac MAC MAC 73// hdr seq len hmac MAC MAC
56#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 74#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
57#define IP_OVERHEAD 20 // size of a (normal) ip header 75#define IP_OVERHEAD 20 // size of a (normal) ip header
76#define GRE_OVERHEAD (IP_OVERHEAD + 4)
77#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
58#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header 78#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
79#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
59#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol 80#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
60#define ETH_OVERHEAD 14 // the size of an ethernet header 81#define ETH_OVERHEAD 14 // the size of an ethernet header
61#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares 82#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares
62 83
63#define PKTCACHESIZE 4 // the size of the memory pool for packets 84#define PKTCACHESIZE 16 // the size of the memory pool for packets
64
65#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low)
66
67#define WINDOWSIZE 512 // sliding window size
68 85
69extern char *confbase; // directory in which all config files are 86extern char *confbase; // directory in which all config files are
70extern char *thisnode; // config for current node (TODO: remove) 87extern char *thisnode; // config for current node (TODO: remove)
71extern char *pidfilename; // pid file location 88
89template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
90template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
91template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
92template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
93
94template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
95
96template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
72 97
73#endif 98#endif
74 99

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