isdn4k-utils/areacode/acvers.c

118 lines
4.4 KiB
C

/*****************************************************************************/
/* */
/* ACVERS.C */
/* */
/* Get the version and build of an areacode data file */
/* */
/* */
/* */
/* (C) 1996,97 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.com */
/* */
/* */
/* This software is provided 'as-is', without any express or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
/* This code assumes 8 bit bytes */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/*****************************************************************************/
/* Data */
/*****************************************************************************/
#define MAGIC0 0x68
#define MAGIC1 0x57
#define MAGIC2 0x46
#define MAGIC3 0x35
/*****************************************************************************/
/* Code */
/*****************************************************************************/
static void Usage (const char* ProgName)
/* Print usage information and exit */
{
printf ("%s: Print the version of an areacode database\n\n"
"Usage: \t%s file ...\n",
ProgName, ProgName);
exit (1);
}
int main (int argc, char* argv [])
{
int I;
if (argc < 2) {
Usage (argv [0]);
}
for (I = 1; I < argc; I++) {
FILE* F;
const char* Filename = argv [I];
unsigned char MagicBuf [4];
unsigned char BuildBuf [2];
unsigned char VersionBuf [2];
unsigned Build;
if ((F = fopen (Filename, "rb")) == 0) {
perror ("Cannot open input file");
exit (2);
}
fread (MagicBuf, sizeof (MagicBuf), 1, F);
if (MagicBuf [0] != MAGIC0 || MagicBuf [1] != MAGIC1 ||
MagicBuf [2] != MAGIC2 || MagicBuf [3] != MAGIC3) {
fprintf (stderr, "No dial prefix database\n");
exit (3);
}
fread (BuildBuf, sizeof (BuildBuf), 1, F);
fread (VersionBuf, sizeof (VersionBuf), 1, F);
fclose (F);
Build = ((unsigned) BuildBuf [1]) * 256 + ((unsigned) BuildBuf [0]);
printf ("%d %d %u\n", VersionBuf [1], VersionBuf [0], Build);
}
return 0;
}