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Comparing gvpe/src/global.h (file contents):
Revision 1.6 by pcg, Wed Mar 26 01:58:46 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) 2003-2013 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
22#include "config.h" 35#include "config.h"
23 36
24#include <time.h> 37#include <time.h>
25 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
26 48
27#define RSA_KEYBITS 1280 // must be >= 1280 and divisible by 8 49#define KEY_BITS(cipher) keybits_ ## cipher
28#define RSA_KEYLEN ((RSA_KEYBITS) >> 3) 50#define KEY_SIZE(cipher) (KEY_BITS (cipher) >> 3)
29#define RSA_OVERHEAD (41 + 1) // well, no define for OAEP in openssl 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
30 55
31#define RSA_HASH EVP_ripemd160 ()// speed don't matter, boy, safety does.. I need sha256 :( 56#define BLOCK_BITS(cipher) blockbits_ ## cipher
32#define RSA_HASHLEN (160 >> 3) 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
33 62
34#define RSA_IDLEN 16 // how many bytes are used to identify the challenge 63/* Protocol version. Different major versions are incompatible,
35#define RSA_TTL 20 // challenge bytes timeout after n seconds 64 * different minor versions probably are compatible ;)
65 */
36 66
37#define CIPHER ENABLE_CIPHER () 67#define PROTOCOL_MAJOR 1
38#define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) 68#define PROTOCOL_MINOR 0
39#define DIGEST ENABLE_DIGEST ()
40#define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY)
41 69
42#define MAX_SEQNO 0xfffffff0U 70#define SEED_SIZE 64 // how many octets to seed rng with
43 71
44#define CHG_SEQNO 0 // where the seqno starts within the rsa challenge 72#define HKDF_XTR_HASH EVP_sha512
45#define CHG_CIPHER_KEY 4 // where the key starts within the rsa challenge 73#define HKDF_PRF_HASH EVP_sha256
46#define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!)
47 74
48// hdr seq len hmac MAC MAC 75#define HKDF_SALT 32
49#define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) 76#define IKM_SIZE 32
50#define IP_OVERHEAD 20 // size of a (normal) ip header
51#define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header
52#define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol
53#define ETH_OVERHEAD 14 // the size of an ethernet header
54#define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares
55 77
56#define PKTCACHESIZE 4 // the size of the memory pool for packets 78#define RSA_KEYLEN (RSABITS >> 3)
57 79
58#define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) 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
59 83
84#define CIPHER ENABLE_CIPHER
85#define CIPHER_KEYSIZE (KEY_SIZE (CIPHER))
86
87#define MAC_DIGEST ENABLE_DIGEST
88#define MAC_KEYSIZE HASH_SIZE (ENABLE_DIGEST) // number of bits used for the HMAC key
89
60#define WINDOWSIZE 512 // sliding window size 90#define WINDOWSIZE 512 // sliding window size
91#define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8)
92
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
103
104#define PKTCACHESIZE 16 // the size of the memory pool for packets
61 105
62extern char *confbase; // directory in which all config files are 106extern char *confbase; // directory in which all config files are
63extern char *thisnode; // config for current node (TODO: remove) 107extern char *thisnode; // config for current node (TODO: remove)
64extern 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; }
65 117
66#endif 118#endif
67 119

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