magic functions part2 (inactiv)

1 files changed, 96 insertions, 0 deletions

diff --git a/src/magic_block_scan.c b/src/magic_block_scan.c
new file mode 100644
index 0000000..76792e7
--- /dev/null
+++ b/src/magic_block_scan.c
@@ -0,0 +1,96 @@
+/***************************************************************************
+ *   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);
+
+}