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Comparing gvpe/src/global.h (file contents):
Revision 1.15 by pcg, Thu Oct 16 02:41:21 2003 UTC vs.
Revision 1.28 by root, Wed Jul 17 04:36:03 2013 UTC

1/* 1/*
2 global.h -- global variables and constants 2 global.h -- global variables and constants
3 Copyright (C) 2003 Marc Lehmann <pcg@goof.com> 3 Copyright (C) 2003-2013 Marc Lehmann <gvpe@schmorp.de>
4 4
5 This file is part of GVPE.
6
5 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
6 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
7 the Free Software Foundation; either version 2 of the License, or 9 Free Software Foundation; either version 3 of the License, or (at your
8 (at your option) any later version. 10 option) any later version.
9 11
10 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
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
13 GNU General Public License for more details. 15 Public License for more details.
14 16
15 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
16 along with this program; if not, write to the Free Software 18 with this program; if not, see <http://www.gnu.org/licenses/>.
17 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.
18*/ 30*/
19 31
20#ifndef GLOBAL_H__ 32#ifndef GLOBAL_H__
21#define GLOBAL_H__ 33#define GLOBAL_H__
22 34
23#include "config.h" 35#include "config.h"
24 36
25#include <time.h> 37#include <time.h>
26 38
39#define HASH_BITS(hash) hashbits_ ## hash
40#define HASH_SIZE(hash) (HASH_BITS (hash) >> 3)
41#define hashbits_EVP_ripemd160 160
42#define hashbits_EVP_sha1 160
43#define hashbits_EVP_sha224 224
44#define hashbits_EVP_sha256 256
45#define hashbits_EVP_sha384 384
46#define hashbits_EVP_sha512 512
47#define hashbits_EVP_whirlpool 512
48
49#define KEY_BITS(cipher) keybits_ ## cipher
50#define KEY_SIZE(cipher) (KEY_BITS (cipher) >> 3)
51#define keybits_EVP_bf_cbc 128 // actually 32-448
52#define keybits_EVP_aes_128_cbc 128
53#define keybits_EVP_aes_192_cbc 192
54#define keybits_EVP_aes_256_cbc 256
55
56#define BLOCK_BITS(cipher) blockbits_ ## cipher
57#define BLOCK_SIZE(cipher) (BLOCK_BITS (cipher) >> 3)
58#define blockbits_EVP_bf_cbc 64
59#define blockbits_EVP_aes_128_cbc 128
60#define blockbits_EVP_aes_192_cbc 128
61#define blockbits_EVP_aes_256_cbc 128
62
27/* Protocol version. Different major versions are incompatible, 63/* Protocol version. Different major versions are incompatible,
28 * different minor versions probably are compatible ;) 64 * different minor versions probably are compatible ;)
29 */ 65 */
30 66
31#define PROTOCOL_MAJOR 0 67#define PROTOCOL_MAJOR 1
32#define PROTOCOL_MINOR 1 68#define PROTOCOL_MINOR 0
33 69
34#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 70#define SEED_SIZE 64 // how many octets to seed rng with
35#define RSA_KEYLEN ((RSA_KEYBITS) >> 3)
36#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl
37 71
38#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 72#define HKDF_XTR_HASH EVP_sha512
39#define RSA_HASHLEN (160 >> 3) 73#define HKDF_PRF_HASH EVP_sha256
40#define RSA_RESLEN RSA_HASHLEN
41 74
42#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 75#define HKDF_SALT 32
43#define RSA_TTL 120 // challenge bytes timeout after n seconds 76#define IKM_SIZE 32
44 77
45#define CIPHER ENABLE_CIPHER () 78#define RSA_KEYLEN (RSABITS >> 3)
46#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER))
47#define DIGEST ENABLE_DIGEST ()
48#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
49 79
50#define MAX_SEQNO 0xfffffff0U 80#define AUTH_DIGEST ENABLE_AUTH
81#define AUTH_SIZE (HASH_SIZE (AUTH_DIGEST))
82#define AUTH_TTL 12 // challenge bytes timeout after n seconds of non-use
51 83
52#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 84#define CIPHER ENABLE_CIPHER
53#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 85#define CIPHER_KEYSIZE (KEY_SIZE (CIPHER))
54#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
55 86
56// hdr seq len hmac MAC MAC 87#define MAC_DIGEST ENABLE_DIGEST
57#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 88#define MAC_KEYSIZE HASH_SIZE (ENABLE_DIGEST) // number of bits used for the HMAC key
58#define IP_OVERHEAD 20 // size of a (normal) ip header
59#define GRE_OVERHEAD (IP_OVERHEAD + 4)
60#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
61#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header
62#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + pakcetlength
63#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
64#define ETH_OVERHEAD 14 // the size of an ethernet header
65#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares
66 89
67#define PKTCACHESIZE 5 // the size of the memory pool for packets 90#define WINDOWSIZE 512 // sliding window size
91#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
68 92
69#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) 93// hdr seq len hmac MAC MAC
94#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6)
95#define IP_OVERHEAD 20 // size of a (normal) ip header
96#define GRE_OVERHEAD (IP_OVERHEAD + 4)
97#define ICMP_OVERHEAD (IP_OVERHEAD + 4)
98#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care)
99#define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength
100#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count)
101#define ETH_OVERHEAD 14 // the size of an ethernet header
102#define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares
70 103
71#define WINDOWSIZE 512 // sliding window size 104#define PKTCACHESIZE 16 // the size of the memory pool for packets
72 105
73extern char *confbase; // directory in which all config files are 106extern char *confbase; // directory in which all config files are
74extern char *thisnode; // config for current node (TODO: remove) 107extern char *thisnode; // config for current node (TODO: remove)
75extern char *pidfilename; // pid file location 108
109template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
110template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
111template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
112template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; }
113
114template<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; }
115
116template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
76 117
77#endif 118#endif
78 119

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