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 | |
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25 | #include <openssl/rsa.h> |
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26 | |
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27 | #include "gettext.h" |
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28 | |
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29 | #include "slog.h" |
25 | #include "iom.h" |
30 | #include "iom.h" |
26 | #include "device.h" |
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27 | |
31 | |
28 | /* |
32 | /* |
29 | * check for an existing vped for this net, and write pid to pidfile |
33 | * check for an existing vped for this net, and write pid to pidfile |
30 | */ |
34 | */ |
31 | extern int write_pidfile (void); |
35 | extern int write_pidfile (void); |
… | |
… | |
39 | * Detach from current terminal, write pidfile, kill parent |
43 | * Detach from current terminal, write pidfile, kill parent |
40 | */ |
44 | */ |
41 | extern int detach (int do_detach); |
45 | extern int detach (int do_detach); |
42 | |
46 | |
43 | /* |
47 | /* |
44 | * Set all files and paths according to netname |
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45 | */ |
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46 | extern void make_names (void); |
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47 | |
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48 | /* |
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49 | * check wether the given path is an absolute pathname |
48 | * check wether the given path is an absolute pathname |
50 | */ |
49 | */ |
51 | #define ABSOLUTE_PATH(c) ((c)[0] == '/') |
50 | #define ABSOLUTE_PATH(c) ((c)[0] == '/') |
52 | |
51 | |
53 | static inline void |
52 | /*****************************************************************************/ |
54 | id2mac (unsigned int id, void *m) |
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55 | { |
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56 | mac &p = *(mac *)m; |
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57 | |
53 | |
58 | p[0] = 0xfe; |
54 | typedef u8 mac[6]; |
59 | p[1] = 0xfd; |
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60 | p[2] = 0x80; |
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61 | p[3] = 0x00; |
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62 | p[4] = id >> 8; |
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63 | p[5] = id; |
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64 | } |
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65 | |
55 | |
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56 | extern void id2mac (unsigned int id, void *m); |
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57 | |
66 | #define mac2id(p) (p[0] & 0x01 ? 0 : (p[4] << 8) | p[5]) |
58 | #define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5]) |
67 | |
59 | |
68 | struct sliding_window { |
60 | struct sliding_window { |
69 | u32 v[(WINDOWSIZE + 31) / 32]; |
61 | u32 v[(WINDOWSIZE + 31) / 32]; |
70 | u32 seq; |
62 | u32 seq; |
71 | |
63 | |
… | |
… | |
113 | } |
105 | } |
114 | } |
106 | } |
115 | } |
107 | } |
116 | }; |
108 | }; |
117 | |
109 | |
118 | typedef callback<const char *, int> run_script_cb; |
110 | typedef callback0<const char *> run_script_cb; |
119 | |
111 | |
120 | // run a shell script (or actually an external program). |
112 | // run a shell script (or actually an external program). |
121 | void run_script (const run_script_cb &cb, bool wait); |
113 | void run_script (const run_script_cb &cb, bool wait); |
122 | |
114 | |
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115 | #if ENABLE_HTTP_PROXY |
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116 | u8 *base64_encode (const u8 *data, unsigned int len); |
123 | #endif |
117 | #endif |
124 | |
118 | |
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119 | /*****************************************************************************/ |
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120 | |
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121 | typedef u8 rsaclear[RSA_KEYLEN - RSA_OVERHEAD]; // challenge data; |
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122 | typedef u8 rsacrypt[RSA_KEYLEN]; // encrypted challenge |
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123 | |
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124 | static inline void |
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125 | rsa_encrypt (RSA *key, const rsaclear &chg, rsacrypt &encr) |
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126 | { |
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127 | if (RSA_public_encrypt (sizeof chg, |
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128 | (unsigned char *)&chg, (unsigned char *)&encr, |
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129 | key, RSA_PKCS1_OAEP_PADDING) < 0) |
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130 | fatal ("RSA_public_encrypt error"); |
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131 | } |
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132 | |
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133 | static inline bool |
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134 | rsa_decrypt (RSA *key, const rsacrypt &encr, rsaclear &chg) |
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135 | { |
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136 | return RSA_private_decrypt (sizeof encr, |
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137 | (unsigned char *)&encr, (unsigned char *)&chg, |
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138 | key, RSA_PKCS1_OAEP_PADDING) > 0; |
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139 | } |
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140 | |
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141 | #endif |
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142 | |