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authorChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2007-10-29 22:38:52 +0100
commit9928d99936105b4653d2d1b8ca74dc3ffba5c71e (patch)
tree06aa4f5e9f0055027c6fb54dd47a8414cf2fba32 /src/file_qbb.c
First version in git
Diffstat (limited to 'src/file_qbb.c')
-rw-r--r--src/file_qbb.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/file_qbb.c b/src/file_qbb.c
new file mode 100644
index 0000000..3b9ee8f
--- /dev/null
+++ b/src/file_qbb.c
@@ -0,0 +1,98 @@
+/*
+
+ File: file_qbb.c
+
+ Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
+
+ This software 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 the Free Software Foundation, Inc., 51
+ Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include <stdio.h>
+#include "types.h"
+#include "filegen.h"
+
+
+static void register_header_check_qbb(file_stat_t *file_stat);
+static int header_check_qbb(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new);
+static int data_check_qbb(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery);
+static void file_check_qbb(file_recovery_t *file_recovery);
+
+const file_hint_t file_hint_qbb= {
+ .extension="qbb",
+ .description="Quickbooks (qbb/qbw)",
+ .min_header_distance=0,
+ .max_filesize=30*1024*1024,
+ .recover=1,
+ .header_check=&header_check_qbb,
+ .register_header_check=&register_header_check_qbb
+};
+
+static const unsigned char qbb_header[10]= {0x45, 0x86, 0x00, 0x00, 0x06, 0x00, 0x02, 0x00, 0x01, 0x00};
+static const unsigned char qbw_header[4]= {0x56, 0x00, 0x00, 0x00};
+
+static void register_header_check_qbb(file_stat_t *file_stat)
+{
+ register_header_check(0, qbb_header,sizeof(qbb_header), &header_check_qbb, file_stat);
+ register_header_check(4, qbw_header,sizeof(qbw_header), &header_check_qbb, file_stat);
+}
+
+static int header_check_qbb(const unsigned char *buffer, const unsigned int buffer_size, const unsigned int safe_header_only, const file_recovery_t *file_recovery, file_recovery_t *file_recovery_new)
+{
+ if(memcmp(buffer, qbb_header, sizeof(qbb_header))==0)
+ {
+ reset_file_recovery(file_recovery_new);
+ /* The filesize is bigger */
+ file_recovery_new->calculated_file_size=(uint64_t)buffer[0x37] + (((uint64_t)buffer[0x37+1])<<8)+
+ (((uint64_t)buffer[0x37+2])<<16) + (((uint64_t)buffer[0x37+3])<<24);
+ file_recovery_new->extension=file_hint_qbb.extension;
+ file_recovery_new->data_check=&data_check_qbb;
+ file_recovery_new->file_check=&file_check_qbb;
+ return 1;
+ }
+ if(buffer[4]==0x56 && buffer[5]==0x00 && buffer[6]==0x00 && buffer[7]==0x00 &&
+ buffer[0x60]=='M' && buffer[0x61]=='A' && buffer[0x62]=='U' && buffer[0x63]=='I')
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->calculated_file_size=(((uint64_t)buffer[0x34] + (((uint64_t)buffer[0x34+1])<<8)+
+ (((uint64_t)buffer[0x34+2])<<16) + (((uint64_t)buffer[0x34+3])<<24))+1)*1024;
+ file_recovery_new->extension="qbw";
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+ }
+ return 0;
+}
+
+static int data_check_qbb(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
+{
+ if(file_recovery->file_size > file_recovery->calculated_file_size+512)
+ {
+ return 2;
+ }
+ return 1;
+}
+
+static void file_check_qbb(file_recovery_t *file_recovery)
+{
+ if(file_recovery->file_size < file_recovery->calculated_file_size)
+ file_recovery->file_size=0;
+}