1 | /* |
1 | /* |
2 | global.h -- global variables and constants |
2 | global.h -- global variables and constants |
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3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
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4 | |
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5 | This file is part of GVPE. |
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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 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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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 | |
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44 | #define CIPHER ENABLE_CIPHER () |
57 | #define CIPHER ENABLE_CIPHER () |
45 | #define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) |
58 | #define CIPHER_KEYLEN (EVP_CIPHER_key_length (CIPHER)) |
46 | #define DIGEST ENABLE_DIGEST () |
59 | #define DIGEST ENABLE_DIGEST () |
47 | #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) |
60 | #define HMAC_KEYLEN (256 >> 3) // number of bits used for the HMAC key (also change CHG_HMAC_KEY) |
48 | |
61 | |
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62 | #define WINDOWSIZE 512 // sliding window size |
49 | #define MAX_SEQNO 0xfffffff0U |
63 | #define MAX_SEQNO (0xfffffff0U - WINDOWSIZE * 8) |
50 | |
64 | |
51 | #define CHG_SEQNO 0 // where the seqno starts within the rsa challenge |
65 | #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 |
66 | #define CHG_CIPHER_KEY 4 // 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!) |
67 | #define CHG_HMAC_KEY 86 // where the key starts within the rsa challenge (256 bits at the end!) |
54 | |
68 | |
55 | // hdr seq len hmac MAC MAC |
69 | // hdr seq len hmac MAC MAC |
56 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
70 | #define VPE_OVERHEAD (4 + 4 + 4 + RAND_SIZE + HMACLENGTH - 6 - 6) |
57 | #define IP_OVERHEAD 20 // size of a (normal) ip header |
71 | #define IP_OVERHEAD 20 // size of a (normal) ip header |
58 | #define GRE_OVERHEAD (IP_OVERHEAD + 4) |
72 | #define GRE_OVERHEAD (IP_OVERHEAD + 4) |
59 | #define ICMP_OVERHEAD (IP_OVERHEAD + 4) |
73 | #define ICMP_OVERHEAD (IP_OVERHEAD + 4) |
60 | #define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header |
74 | #define UDP_OVERHEAD (IP_OVERHEAD + 20) // size of a (normal) ip + udp header (wrong, but don't care) |
61 | #define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + pakcetlength |
75 | #define TCP_OVERHEAD (IP_OVERHEAD + 22) // size of a (normal) ip + tcp header + packetlength |
62 | #define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) |
76 | #define MAX_OVERHEAD UDP_OVERHEAD // the max. overhead of any protocol (ok, tcp doesn't count) |
63 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
77 | #define ETH_OVERHEAD 14 // the size of an ethernet header |
64 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD)// slightly too large, but who cares |
78 | #define MAXSIZE (MAX_MTU + VPE_OVERHEAD) // slightly too large, but who cares |
65 | |
79 | |
66 | #define PKTCACHESIZE 5 // the size of the memory pool for packets |
80 | #define PKTCACHESIZE 16 // the size of the memory pool for packets |
67 | |
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68 | #define QUEUEDEPTH 16 // the number of packets that will be queued (should be low) |
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69 | |
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70 | #define WINDOWSIZE 512 // sliding window size |
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71 | |
81 | |
72 | extern char *confbase; // directory in which all config files are |
82 | extern char *confbase; // directory in which all config files are |
73 | extern char *thisnode; // config for current node (TODO: remove) |
83 | extern char *thisnode; // config for current node (TODO: remove) |
74 | extern char *pidfilename; // pid file location |
84 | |
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85 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
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86 | template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } |
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87 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
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88 | template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } |
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89 | |
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90 | template<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; } |
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91 | |
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92 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
75 | |
93 | |
76 | #endif |
94 | #endif |
77 | |
95 | |