76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
|
|
utils.c -- gathering of some stupid small functions
|
|
Copyright (C) 1999-2005 Ivo Timmermans
|
|
2000-2009 Guus Sliepen <guus@tinc-vpn.org>
|
|
|
|
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.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "system.h"
|
|
|
|
#include "../src/logger.h"
|
|
#include "utils.h"
|
|
|
|
static const char hexadecimals[] = "0123456789ABCDEF";
|
|
|
|
static 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];
|
|
}
|
|
}
|
|
|
|
#if defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
|
|
#ifdef HAVE_CYGWIN
|
|
#include <w32api/windows.h>
|
|
#endif
|
|
|
|
const char *winerror(int err) {
|
|
static char buf[1024], *newline;
|
|
|
|
if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, sizeof(buf), NULL)) {
|
|
strncpy(buf, "(unable to format errormessage)", sizeof(buf));
|
|
};
|
|
|
|
if((newline = strchr(buf, '\r')))
|
|
*newline = '\0';
|
|
|
|
return buf;
|
|
}
|
|
#endif
|
|
|
|
unsigned int bitfield_to_int(const void *bitfield, size_t size) {
|
|
unsigned int value = 0;
|
|
if(size > sizeof value)
|
|
size = sizeof value;
|
|
memcpy(&value, bitfield, size);
|
|
return value;
|
|
}
|