UWfirmforce
/* $Id: ext2fs.c,v 1.1 2011/01/13 21:32:35 khorben Exp $ */
/* Copyright (c) 2011 khorben of UberWall */
/* 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 version 2 of the License.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <stddef.h>
#include <time.h>
#include "plugin.h"
/* ext2fs */
/* public */
/* types */
#pragma pack(1)
struct ext2fs_super_block
{
unsigned int e2fs_icount;
unsigned int e2fs_bcount;
unsigned int e2fs_rbcount;
unsigned int e2fs_fbcount;
unsigned int e2fs_ficount;
unsigned int e2fs_first_dblock;
unsigned int e2fs_log_bsize;
unsigned int e2fs_fsize;
unsigned int e2fs_bpg;
unsigned int e2fs_fpg;
unsigned int e2fs_ipg;
unsigned int e2fs_mtime;
unsigned int e2fs_wtime;
unsigned short e2fs_mnt_count;
unsigned short e2fs_max_mnt_count;
unsigned short e2fs_magic;
unsigned short e2fs_state;
};
#pragma pack()
/* prototypes */
static int ext2fs_callback(PluginHelper * ph, int signature, FILE * fp);
/* variables */
/* magic */
static unsigned char sig1[] = "\xef\x53";
static unsigned char sig2[] = "\x53\xef";
static PluginMagic ext2fs_magic[] =
{
{ sizeof(struct ext2fs_super_block),
offsetof(struct ext2fs_super_block, e2fs_magic),
sig1, sizeof(sig1) - 1 },
{ sizeof(struct ext2fs_super_block),
offsetof(struct ext2fs_super_block, e2fs_magic),
sig2, sizeof(sig2) - 1 },
{ 0, 0, NULL, 0 }
};
/* plugin */
Plugin plugin =
{
PT_ARCHIVE,
"EXT2FS",
ext2fs_magic,
ext2fs_callback
};
/* functions */
/* ext2fs_callback */
static int _callback_time(PluginHelper * ph, char const * what, time_t mtime);
static int ext2fs_callback(PluginHelper * ph, int signature, FILE * fp)
{
int score = 0;
struct ext2fs_super_block buf;
if(fread(&buf, sizeof(buf), 1, fp) != 1)
return -1;
ph->printf(ph, "inode count %u, block count %u"
", reserved block count %u", buf.e2fs_icount,
buf.e2fs_bcount, buf.e2fs_rbcount);
score += _callback_time(ph, "mount time", buf.e2fs_mtime);
score += _callback_time(ph, "write time", buf.e2fs_wtime);
ph->printf(ph, "\n");
return score / 2;
}
static int _callback_time(PluginHelper * ph, char const * what, time_t mtime)
{
struct tm tm;
char tmp[22] = "";
if(gmtime_r(&mtime, &tm) == NULL || strftime(tmp, sizeof(tmp),
"%d/%m/%Y %H:%M:%S", &tm) == 0)
{
ph->printf(ph, "%s%s", ", unknown ", what);
return 0;
}
ph->printf(ph, ", %s %s", what, tmp);
/* between Wed May 1 00:00:00 CEST 1996 and now */
return mtime > 830901600 && mtime < time(NULL) ? 100 : 0;
}