| 1 | /* |
1 | /* |
| 2 | util.h -- process management and other utility functions |
2 | util.h -- process management and other utility functions |
| 3 | Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
3 | Copyright (C) 1998-2002 Ivo Timmermans <ivo@o2w.nl> |
| 4 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
4 | 2000-2002 Guus Sliepen <guus@sliepen.eu.org> |
| 5 | 2003 Marc Lehmannn <pcg@goof.com> |
5 | 2003 Marc Lehmann <pcg@goof.com> |
| 6 | |
6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
10 | (at your option) any later version. |
| … | |
… | |
| 20 | */ |
20 | */ |
| 21 | |
21 | |
| 22 | #ifndef UTIL_H__ |
22 | #ifndef UTIL_H__ |
| 23 | #define UTIL_H__ |
23 | #define UTIL_H__ |
| 24 | |
24 | |
| 25 | #include <sys/socket.h> |
25 | #include "gettext.h" |
| 26 | #include <netinet/in.h> |
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| 27 | |
26 | |
| 28 | #include <map> |
27 | #include "slog.h" |
| 29 | |
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| 30 | #include "iom.h" |
28 | #include "iom.h" |
| 31 | #include "device.h" |
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| 32 | |
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| 33 | #define SOCKADDR sockaddr_in // this is lame, I know |
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| 34 | |
29 | |
| 35 | /* |
30 | /* |
| 36 | * check for an existing vped for this net, and write pid to pidfile |
31 | * check for an existing vped for this net, and write pid to pidfile |
| 37 | */ |
32 | */ |
| 38 | extern int write_pidfile (void); |
33 | extern int write_pidfile (void); |
| … | |
… | |
| 55 | /* |
50 | /* |
| 56 | * check wether the given path is an absolute pathname |
51 | * check wether the given path is an absolute pathname |
| 57 | */ |
52 | */ |
| 58 | #define ABSOLUTE_PATH(c) ((c)[0] == '/') |
53 | #define ABSOLUTE_PATH(c) ((c)[0] == '/') |
| 59 | |
54 | |
| 60 | static inline void |
55 | typedef u8 mac[6]; |
| 61 | id2mac (unsigned int id, void *m) |
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| 62 | { |
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| 63 | mac &p = *(mac *)m; |
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| 64 | |
56 | |
| 65 | p[0] = 0xfe; |
57 | extern void id2mac (unsigned int id, void *m); |
| 66 | p[1] = 0xfd; |
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| 67 | p[2] = 0x80; |
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| 68 | p[3] = 0x00; |
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| 69 | p[4] = id >> 8; |
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| 70 | p[5] = id; |
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| 71 | } |
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| 72 | |
58 | |
| 73 | #define mac2id(p) (p[0] & 0x01 ? 0 : (p[4] << 8) | p[5]) |
59 | #define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5]) |
| 74 | |
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| 75 | struct sockinfo |
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| 76 | { |
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| 77 | u32 host; |
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| 78 | u16 port; |
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| 79 | |
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| 80 | void set (const SOCKADDR *sa) |
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| 81 | { |
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| 82 | host = sa->sin_addr.s_addr; |
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| 83 | port = sa->sin_port; |
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| 84 | } |
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| 85 | |
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| 86 | sockinfo() |
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| 87 | { |
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| 88 | host = port = 0; |
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| 89 | } |
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| 90 | |
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| 91 | sockinfo(const SOCKADDR &sa) |
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| 92 | { |
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| 93 | set (&sa); |
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| 94 | } |
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| 95 | |
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| 96 | sockinfo(const SOCKADDR *sa) |
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| 97 | { |
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| 98 | set (sa); |
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| 99 | } |
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| 100 | |
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| 101 | SOCKADDR *sa() |
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| 102 | { |
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| 103 | static SOCKADDR sa; |
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| 104 | |
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| 105 | sa.sin_family = AF_INET; |
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| 106 | sa.sin_port = port; |
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| 107 | sa.sin_addr.s_addr = host; |
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| 108 | |
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| 109 | return &sa; |
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| 110 | } |
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| 111 | |
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| 112 | operator const char *(); |
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| 113 | }; |
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| 114 | |
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| 115 | inline bool |
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| 116 | operator == (const sockinfo &a, const sockinfo &b) |
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| 117 | { |
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| 118 | return a.host == b.host && a.port == b.port; |
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| 119 | } |
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| 120 | |
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| 121 | inline bool |
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| 122 | operator < (const sockinfo &a, const sockinfo &b) |
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| 123 | { |
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| 124 | return a.host < b.host |
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| 125 | || (a.host == b.host && a.port < b.port); |
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| 126 | } |
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| 127 | |
60 | |
| 128 | struct sliding_window { |
61 | struct sliding_window { |
| 129 | u32 v[(WINDOWSIZE + 31) / 32]; |
62 | u32 v[(WINDOWSIZE + 31) / 32]; |
| 130 | u32 seq; |
63 | u32 seq; |
| 131 | |
64 | |
| … | |
… | |
| 158 | |
91 | |
| 159 | u32 s = seqno % WINDOWSIZE; |
92 | u32 s = seqno % WINDOWSIZE; |
| 160 | u32 *cell = v + (s >> 5); |
93 | u32 *cell = v + (s >> 5); |
| 161 | u32 mask = 1 << (s & 31); |
94 | u32 mask = 1 << (s & 31); |
| 162 | |
95 | |
| 163 | //printf ("received seqno %08lx, seq %08lx, mask %08lx is %08lx\n", seqno, seq, mask, ismask); |
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| 164 | if (*cell & mask) |
96 | if (*cell & mask) |
| 165 | { |
97 | { |
| 166 | slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" |
98 | slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" |
| 167 | "possible replay attack, or just packet duplication"), seqno, seq + 1);//D |
99 | "possible replay attack, or just packet duplication"), seqno, seq + 1);//D |
| 168 | return false; |
100 | return false; |
| … | |
… | |
| 174 | } |
106 | } |
| 175 | } |
107 | } |
| 176 | } |
108 | } |
| 177 | }; |
109 | }; |
| 178 | |
110 | |
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111 | typedef callback0<const char *> run_script_cb; |
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112 | |
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113 | // run a shell script (or actually an external program). |
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114 | void run_script (const run_script_cb &cb, bool wait); |
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115 | |
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116 | #if ENABLE_HTTP_PROXY |
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117 | u8 *base64_encode (const u8 *data, unsigned int len); |
| 179 | #endif |
118 | #endif |
| 180 | |
119 | |
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120 | #endif |
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121 | |
