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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_fh5.c
First version in git
Diffstat (limited to 'src/file_fh5.c')
-rw-r--r--src/file_fh5.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/src/file_fh5.c b/src/file_fh5.c
new file mode 100644
index 0000000..cee9a37
--- /dev/null
+++ b/src/file_fh5.c
@@ -0,0 +1,85 @@
+/*
+
+ File: file_fh5.c
+
+ Copyright (C) 2007 Christophe GRENIER <grenier@cgsecurity.org>
+ Copyright (C) 2007 Peter Turczak <pspamt@netconsequence.de>
+
+ 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 "common.h"
+#include "filegen.h"
+
+struct fh5_header_s
+{
+ unsigned char id[8];
+ uint32_t datalen; /* Big Endian size w/o headers */
+} __attribute__ ((__packed__));
+typedef struct fh5_header_s fh5_header_t;
+
+static void register_header_check_fh5(file_stat_t *file_stat);
+static int header_check_fh5(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 void file_check_fh5(file_recovery_t *file_recovery);
+
+const file_hint_t file_hint_fh5= {
+ .extension="fh5",
+ .description="Macromedia Freehand 5",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .header_check=&header_check_fh5,
+ .register_header_check=&register_header_check_fh5
+};
+
+static const unsigned char fh5_header[8] = { 0x41, 0x47, 0x44, 0x31, 0xbe, 0xb8, 0xbb, 0xce };
+
+static void register_header_check_fh5(file_stat_t *file_stat)
+{
+ register_header_check(0, fh5_header,sizeof(fh5_header), &header_check_fh5, file_stat);
+}
+
+static int header_check_fh5(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 fh5_header_t *fh5_buffer=(const fh5_header_t *) buffer;
+ if(memcmp(fh5_buffer->id,fh5_header,sizeof(fh5_header))==0)
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->min_filesize=4096,
+ file_recovery_new->calculated_file_size=be32(fh5_buffer->datalen);
+ file_recovery_new->extension=file_hint_fh5.extension;
+ file_recovery_new->file_check=file_check_fh5;
+// log_debug("header_check_fh5: Guessed length : %u\n", fh5_file_size);
+ return 1;
+ }
+ return 0;
+}
+
+static void file_check_fh5(file_recovery_t *file_recovery)
+{
+ if(file_recovery->file_size < file_recovery->calculated_file_size)
+ file_recovery->file_size=0;
+ else if(file_recovery->file_size> file_recovery->calculated_file_size+4096)
+ file_recovery->file_size=file_recovery->calculated_file_size+4096;
+}