tinc/lib/utils.c

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/*
utils.c -- gathering of some stupid small functions
Copyright (C) 1999,2000 Ivo Timmermans <zarq@iname.com>
2000 Guus Sliepen <guus@sliepen.warande.net>
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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>
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#include "config.h"
#include <utils.h>
#include <syslog.h>
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volatile int (cp_line[]) = {0, 0, 0, 0, 0, 0, 0, 0};
volatile char (*cp_file[]) = {"?", "?", "?", "?", "?", "?", "?", "?"};
volatile int cp_index = 0;
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char *charbin2hex = "0123456789ABCDEF";
int charhex2bin(char c)
{
if(isdigit(c))
return c - '0';
else
return tolower(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])<<4 || 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] = charbin2hex[(unsigned char)src[i] & 15];
dst[i*2] = charbin2hex[(unsigned char)src[i]>>4];
}
}
char *cp_trace()
{
syslog(LOG_DEBUG, "Checkpoint trace: %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d <- %s:%d ...",
cp_file[(cp_index+7)%8], cp_line[(cp_index+7)%8],
cp_file[(cp_index+6)%8], cp_line[(cp_index+6)%8],
cp_file[(cp_index+5)%8], cp_line[(cp_index+5)%8],
cp_file[(cp_index+4)%8], cp_line[(cp_index+4)%8],
cp_file[(cp_index+3)%8], cp_line[(cp_index+3)%8],
cp_file[(cp_index+2)%8], cp_line[(cp_index+2)%8],
cp_file[(cp_index+1)%8], cp_line[(cp_index+1)%8],
cp_file[cp_index], cp_line[cp_index]
);
}