mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
/* Generate checksums of executables for PCH validation
|
|
Copyright (C) 2005
|
|
Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
GCC 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, or (at your option) any later
|
|
version.
|
|
|
|
GCC 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 GCC; see the file COPYING. If not, write to the Free
|
|
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301, USA. */
|
|
|
|
#include "bconfig.h"
|
|
#include "system.h"
|
|
#include "md5.h"
|
|
|
|
static void
|
|
usage (void)
|
|
{
|
|
fputs ("Usage: genchecksums <filename>\n", stderr);
|
|
}
|
|
|
|
static void
|
|
dosum (const char *file)
|
|
{
|
|
FILE *f;
|
|
unsigned char result[16];
|
|
int i;
|
|
|
|
f = fopen (file, "rb");
|
|
if (!f)
|
|
{
|
|
fprintf (stderr, "opening %s: %s\n", file, xstrerror (errno));
|
|
exit (1);
|
|
}
|
|
|
|
/* Some executable formats have timestamps in the first 16 bytes, yuck. */
|
|
if (fseek (f, 16, SEEK_SET) != 0)
|
|
{
|
|
fprintf (stderr, "seeking in %s: %s\n", file, xstrerror (errno));
|
|
exit (1);
|
|
}
|
|
|
|
if (md5_stream (f, result) != 0
|
|
|| fclose (f) != 0)
|
|
{
|
|
fprintf (stderr, "reading %s: %s\n", file, xstrerror (errno));
|
|
exit (1);
|
|
}
|
|
|
|
fputs ("const unsigned char executable_checksum[16] = { ", stdout);
|
|
for (i = 0; i < 16; i++)
|
|
printf ("%#02x%s", result[i], i == 15 ? " };\n" : ", ");
|
|
}
|
|
|
|
int
|
|
main (int argc, char ** argv)
|
|
{
|
|
if (argc != 2)
|
|
{
|
|
usage ();
|
|
return 1;
|
|
}
|
|
|
|
dosum (argv[1]);
|
|
|
|
return 0;
|
|
}
|