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/***************************************************************************
* Copyright (C) 2010 by Roberto Maar *
* robi@users.berlios.de *
* *
* 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
* *
* C Implementation: magic_block_scan *
***************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "util.h"
#include "magic.h"
extern ext2_filsys current_fs ;
ext2fs_block_bitmap d_bmap = NULL ;
void magic_block_scan(char* des_dir, __u32 t_after){
int retval;
blk_t blk, o_blk;
int ret, load_db;
struct ext2fs_struct_loc_generic_bitmap *ds_bmap;
char *block_buf = NULL;
magic_t cookie;
int m_result;
cookie = magic_open(MAGIC_NO_CHECK_COMPRESS | MAGIC_NO_CHECK_ELF | MAGIC_NO_CHECK_TAR);
if ((cookie) && (! magic_load(cookie, NULL))){
retval = init_block_bitmap_list(&d_bmap, t_after);
while (retval){
retval = next_block_bitmap(d_bmap);
if (retval == 2 )
continue;
if (d_bmap && retval ){
ds_bmap = (struct ext2fs_struct_loc_generic_bitmap *) d_bmap;
block_buf = malloc(current_fs->blocksize);
if (block_buf){
for (blk = ds_bmap->start; blk <ds_bmap->real_end; blk++){
if (! (blk & 0x7)){
o_blk = blk >> 3;
while ((! *(ds_bmap->bitmap + o_blk)) && (o_blk <= (ds_bmap->real_end >> 3)))
o_blk ++;
blk = o_blk << 3;
}
if (blk >= ds_bmap->real_end)
break;
//FIXME in work
if (ext2fs_test_block_bitmap ( d_bmap, blk) && (! ext2fs_test_block_bitmap( bmap, blk))){
printf(" read block : %u\n",blk);
ret = io_channel_read_blk ( current_fs->io, blk, 1, block_buf );
if (ret){
fprintf(stderr,"ERROR: while read block %10u\n",blk);
}
m_result = magic_check_block(block_buf,cookie,current_fs->blocksize,blk);
}
}
free(block_buf);
}
else
printf("can't allocate memory for blocksearch\n");
}
clear_block_bitmap_list(d_bmap);
}
if(cookie) magic_close(cookie);
}
//FIXME only if needed
if(d_bmap)
ext2fs_free_block_bitmap(d_bmap);
}
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