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Comparing gvpe/src/util.h (file contents):
Revision 1.13 by pcg, Thu Mar 3 16:54:34 2005 UTC vs.
Revision 1.24 by pcg, Tue Dec 4 14:55:59 2007 UTC

… …
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details. 17 GNU General Public License for more details.
18 18
19 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
20 along with gvpe; if not, write to the Free Software 20 along with gvpe; if not, write to the Free Software
21 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
22*/ 22*/
23 23
24#ifndef UTIL_H__ 24#ifndef UTIL_H__
25#define UTIL_H__ 25#define UTIL_H__
26
27#include <cstring>
26 28
27#include <openssl/rsa.h> 29#include <openssl/rsa.h>
28 30
29#include "gettext.h" 31#include "gettext.h"
30 32
31#include "slog.h" 33#include "slog.h"
32#include "iom.h" 34#include "ev_cpp.h"
35#include "callback.h"
36
37typedef ev_tstamp tstamp;
33 38
34/* 39/*
35 * check for an existing vped for this net, and write pid to pidfile 40 * check for an existing gvpe for this net, and write pid to pidfile
36 */ 41 */
37extern int write_pidfile (void); 42extern int write_pidfile (void);
38 43
39/* 44/*
40 * kill older vped 45 * kill older gvpe
41 */ 46 */
42extern int kill_other (int signal); 47extern int kill_other (int signal);
43 48
44/* 49/*
45 * Detach from current terminal, write pidfile, kill parent 50 * Detach from current terminal, write pidfile, kill parent
… …
57 62
58extern void id2mac (unsigned int id, void *m); 63extern void id2mac (unsigned int id, void *m);
59 64
60#define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5]) 65#define mac2id(p) ((p)[0] & 0x01 ? 0 : ((p)[4] << 8) | (p)[5])
61 66
62struct sliding_window { 67struct sliding_window
68{
63 u32 v[(WINDOWSIZE + 31) / 32]; 69 u32 v[(WINDOWSIZE + 31) / 32];
64 u32 seq; 70 u32 seq;
65 71
66 void reset (u32 seqno) 72 void reset (u32 seqno)
67 { 73 {
… …
71 77
72 bool recv_ok (u32 seqno) 78 bool recv_ok (u32 seqno)
73 { 79 {
74 if (seqno <= seq - WINDOWSIZE) 80 if (seqno <= seq - WINDOWSIZE)
75 slog (L_ERR, _("received duplicate or outdated packet (received %08lx, expected %08lx)\n" 81 slog (L_ERR, _("received duplicate or outdated packet (received %08lx, expected %08lx)\n"
76 "possible replay attack, or just massive packet reordering"), seqno, seq + 1);//D 82 "possible replay attack, or just massive packet reordering"), seqno, seq + 1);
77 else if (seqno > seq + WINDOWSIZE) 83 else if (seqno > seq + WINDOWSIZE * 4)
78 slog (L_ERR, _("received duplicate or out-of-sync packet (received %08lx, expected %08lx)\n" 84 slog (L_ERR, _("received duplicate or out-of-sync packet (received %08lx, expected %08lx)\n"
79 "possible replay attack, or just massive packet loss"), seqno, seq + 1);//D 85 "possible replay attack, or just massive packet loss"), seqno, seq + 1);
80 else 86 else
81 { 87 {
82 while (seqno > seq) 88 while (seqno > seq)
83 { 89 {
84 seq++; 90 seq++;
… …
93 u32 s = seqno % WINDOWSIZE; 99 u32 s = seqno % WINDOWSIZE;
94 u32 *cell = v + (s >> 5); 100 u32 *cell = v + (s >> 5);
95 u32 mask = 1 << (s & 31); 101 u32 mask = 1 << (s & 31);
96 102
97 if (*cell & mask) 103 if (*cell & mask)
98 {
99 slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n" 104 slog (L_ERR, _("received duplicate packet (received %08lx, expected %08lx)\n"
100 "possible replay attack, or just packet duplication"), seqno, seq + 1);//D 105 "possible replay attack, or just packet duplication"), seqno, seq + 1);
101 return false;
102 }
103 else 106 else
104 { 107 {
105 *cell |= mask; 108 *cell |= mask;
106 return true; 109 return true;
107 } 110 }
108 } 111 }
112
113 return false;
109 } 114 }
110}; 115};
111 116
112typedef callback0<const char *> run_script_cb; 117typedef callback<const char * ()> run_script_cb;
113 118
114// run a shell script (or actually an external program). 119// run a shell script (or actually an external program).
115void run_script (const run_script_cb &cb, bool wait); 120bool run_script (const run_script_cb &cb, bool wait);
116 121
117#if ENABLE_HTTP_PROXY 122#if ENABLE_HTTP_PROXY
118u8 *base64_encode (const u8 *data, unsigned int len); 123u8 *base64_encode (const u8 *data, unsigned int len);
119#endif 124#endif
120 125

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