summaryrefslogtreecommitdiffstats
path: root/src/file_mkv.c
diff options
context:
space:
mode:
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_mkv.c
First version in git
Diffstat (limited to 'src/file_mkv.c')
-rw-r--r--src/file_mkv.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/src/file_mkv.c b/src/file_mkv.c
new file mode 100644
index 0000000..faa7c9e
--- /dev/null
+++ b/src/file_mkv.c
@@ -0,0 +1,66 @@
+/*
+
+ File: file_mkv.c
+
+ Copyright (C) 1998-2007 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_mkv(file_stat_t *file_stat);
+static int header_check_mkv(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);
+
+const file_hint_t file_hint_mkv= {
+ .extension="mkv",
+ .description="Matroska",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .header_check=&header_check_mkv,
+ .register_header_check=&register_header_check_mkv
+};
+
+static const unsigned char mkv_header[4]= { 0x1a,0x45,0xdf,0xa3};
+
+static void register_header_check_mkv(file_stat_t *file_stat)
+{
+ register_header_check(0, mkv_header,sizeof(mkv_header), &header_check_mkv, file_stat);
+}
+
+static int header_check_mkv(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,mkv_header,sizeof(mkv_header))==0 && memcmp(buffer+8,"matroska",8)==0)
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_mkv.extension;
+ file_recovery_new->min_filesize=0;
+ file_recovery_new->calculated_file_size=(uint64_t)(buffer[0x20]<<24)+(((uint64_t)buffer[0x21])<<16)+(((uint64_t)buffer[0x22])<<8)+((uint64_t)buffer[0x23])+0x24;
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+ }
+ return 0;
+}