tinc/lib/utils.c
2019-08-26 13:44:36 +02:00

87 lines
3 KiB
C

/*
utils.c -- gathering of some stupid small functions
Copyright (C) 1999-2001 Ivo Timmermans <zarq@iname.com>
2000,2001 Guus Sliepen <guus@sliepen.warande.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <sys/types.h>
#include <ctype.h>
#include <string.h>
#include "config.h"
#include <utils.h>
#include <syslog.h>
#include <xalloc.h>
#ifdef ENABLE_TRACING
volatile int (cp_line[]) = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
volatile char (*cp_file[]) = {"?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?"};
volatile int cp_index = 0;
#endif
char *hexadecimals = "0123456789ABCDEF";
int charhex2bin(char c)
{
if(isdigit(c))
return c - '0';
else
return toupper(c) - 'A' + 10;
}
void hex2bin(char *src, char *dst, int length)
{
int i;
for(i=0; i<length; i++)
dst[i] = charhex2bin(src[i*2])*16 + charhex2bin(src[i*2+1]);
}
void bin2hex(char *src, char *dst, int length)
{
int i;
for(i=length-1; i>=0; i--)
{
dst[i*2+1] = hexadecimals[(unsigned char)src[i] & 15];
dst[i*2] = hexadecimals[(unsigned char)src[i]>>4];
}
}
#ifdef ENABLE_TRACING
void cp_trace()
{
syslog(LOG_DEBUG, "Checkpoint trace: %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d...",
cp_file[(cp_index+15)%16], cp_line[(cp_index+15)%16],
cp_file[(cp_index+14)%16], cp_line[(cp_index+14)%16],
cp_file[(cp_index+13)%16], cp_line[(cp_index+13)%16],
cp_file[(cp_index+12)%16], cp_line[(cp_index+12)%16],
cp_file[(cp_index+11)%16], cp_line[(cp_index+11)%16],
cp_file[(cp_index+10)%16], cp_line[(cp_index+10)%16],
cp_file[(cp_index+9)%16], cp_line[(cp_index+9)%16],
cp_file[(cp_index+8)%16], cp_line[(cp_index+8)%16],
cp_file[(cp_index+7)%16], cp_line[(cp_index+7)%16],
cp_file[(cp_index+6)%16], cp_line[(cp_index+6)%16],
cp_file[(cp_index+5)%16], cp_line[(cp_index+5)%16],
cp_file[(cp_index+4)%16], cp_line[(cp_index+4)%16],
cp_file[(cp_index+3)%16], cp_line[(cp_index+3)%16],
cp_file[(cp_index+2)%16], cp_line[(cp_index+2)%16],
cp_file[(cp_index+1)%16], cp_line[(cp_index+1)%16],
cp_file[cp_index], cp_line[cp_index]
);
}
#endif