ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/gvpe/src/util.h
(Generate patch)

Comparing gvpe/src/util.h (file contents):
Revision 1.12 by pcg, Mon May 10 20:13:10 2004 UTC vs.
Revision 1.22 by pcg, Sun Dec 2 00:09:36 2007 UTC

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 Lehmann <pcg@goof.com> 5 2003 Marc Lehmann <gvpe@schmorp.de>
6 6
7 This file is part of GVPE.
8
7 This program is free software; you can redistribute it and/or modify 9 GVPE is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 10 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 11 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version. 12 (at your option) any later version.
11 13
12 This program is distributed in the hope that it will be useful, 14 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 17 GNU General Public License for more details.
16 18
17 You should have received a copy of the GNU General Public License 19 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software 20 along with gvpe; if not, write to the Free Software
19 Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20*/ 22*/
21 23
22#ifndef UTIL_H__ 24#ifndef UTIL_H__
23#define UTIL_H__ 25#define UTIL_H__
24 26
25#include <openssl/rsa.h> 27#include <openssl/rsa.h>
26 28
27#include "gettext.h" 29#include "gettext.h"
28 30
29#include "slog.h" 31#include "slog.h"
30#include "iom.h" 32#include "ev_cpp.h"
33#include "callback.h"
34
35typedef ev_tstamp tstamp;
31 36
32/* 37/*
33 * check for an existing vped for this net, and write pid to pidfile 38 * check for an existing gvpe for this net, and write pid to pidfile
34 */ 39 */
35extern int write_pidfile (void); 40extern int write_pidfile (void);
36 41
37/* 42/*
38 * kill older vped 43 * kill older gvpe
39 */ 44 */
40extern int kill_other (int signal); 45extern int kill_other (int signal);
41 46
42/* 47/*
43 * Detach from current terminal, write pidfile, kill parent 48 * Detach from current terminal, write pidfile, kill parent
… …
55 60
56extern void id2mac (unsigned int id, void *m); 61extern void id2mac (unsigned int id, void *m);
57 62
58#define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5]) 63#define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5])
59 64
60struct sliding_window { 65struct sliding_window
66{
61 u32 v[(WINDOWSIZE + 31) / 32]; 67 u32 v[(WINDOWSIZE + 31) / 32];
62 u32 seq; 68 u32 seq;
63 69
64 void reset (u32 seqno) 70 void reset (u32 seqno)
65 { 71 {
… …
69 75
70 bool recv_ok (u32 seqno) 76 bool recv_ok (u32 seqno)
71 { 77 {
72 if (seqno <= seq - WINDOWSIZE) 78 if (seqno <= seq - WINDOWSIZE)
73 slog (L_ERR, _("received duplicate or outdated packet (received %08lx, expected %08lx)\n" 79 slog (L_ERR, _("received duplicate or outdated packet (received %08lx, expected %08lx)\n"
74 "possible replay attack, or just massive packet reordering"), seqno, seq + 1);//D 80 "possible replay attack, or just massive packet reordering"), seqno, seq + 1);
75 else if (seqno > seq + WINDOWSIZE) 81 else if (seqno > seq + WINDOWSIZE * 4)
76 slog (L_ERR, _("received duplicate or out-of-sync packet (received %08lx, expected %08lx)\n" 82 slog (L_ERR, _("received duplicate or out-of-sync packet (received %08lx, expected %08lx)\n"
77 "possible replay attack, or just massive packet loss"), seqno, seq + 1);//D 83 "possible replay attack, or just massive packet loss"), seqno, seq + 1);
78 else 84 else
79 { 85 {
80 while (seqno > seq) 86 while (seqno > seq)
81 { 87 {
82 seq++; 88 seq++;
… …
91 u32 s = seqno % WINDOWSIZE; 97 u32 s = seqno % WINDOWSIZE;
92 u32 *cell = v + (s >> 5); 98 u32 *cell = v + (s >> 5);
93 u32 mask = 1 << (s & 31); 99 u32 mask = 1 << (s & 31);
94 100
95 if (*cell & mask) 101 if (*cell & mask)
96 {
97 slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" 102 slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n"
98 "possible replay attack, or just packet duplication"), seqno, seq + 1);//D 103 "possible replay attack, or just packet duplication"), seqno, seq + 1);
99 return false;
100 }
101 else 104 else
102 { 105 {
103 *cell |= mask; 106 *cell |= mask;
104 return true; 107 return true;
105 } 108 }
106 } 109 }
110
111 return false;
107 } 112 }
108}; 113};
109 114
110typedef callback0<const char *> run_script_cb; 115typedef callback0<const char *> run_script_cb;
111 116
112// run a shell script (or actually an external program). 117// run a shell script (or actually an external program).
113void run_script (const run_script_cb &cb, bool wait); 118bool run_script (const run_script_cb &cb, bool wait);
114 119
115#if ENABLE_HTTP_PROXY 120#if ENABLE_HTTP_PROXY
116u8 *base64_encode (const u8 *data, unsigned int len); 121u8 *base64_encode (const u8 *data, unsigned int len);
117#endif 122#endif
118 123

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines