PhotoRec: recover Didson Data File .ddf (v3 and v4)

1 files changed, 85 insertions, 0 deletions

diff --git a/src/file_ddf.c b/src/file_ddf.c
new file mode 100644
index 0000000..63335f7
--- /dev/null
+++ b/src/file_ddf.c
@@ -0,0 +1,85 @@
+/*
+
+    File: file_ddf.c
+
+    Copyright (C) 2011 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>
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#include "types.h"
+#include "filegen.h"
+
+static void register_header_check_ddf(file_stat_t *file_stat);
+
+const file_hint_t file_hint_ddf= {
+  .extension="ddf",
+  .description="Didson Data File",
+  .min_header_distance=0,
+  .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+  .recover=1,
+  .enable_by_default=1,
+  .register_header_check=&register_header_check_ddf
+};
+
+static const unsigned char ddf3_header[4]=  {
+  'D' , 'D' , 'F' , 0x03
+};
+static const unsigned char ddf4_header[4]=  {
+  'D' , 'D' , 'F' , 0x04
+};
+
+static int header_check_ddf(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, ddf3_header, sizeof(ddf3_header))==0 ||
+      memcmp(buffer, ddf4_header, sizeof(ddf4_header))==0)
+  {
+    reset_file_recovery(file_recovery_new);
+    file_recovery_new->extension=file_hint_ddf.extension;
+    if(buffer[0x43]=='-' && buffer[0x46]=='-' && buffer[0x49]=='_')
+    {
+      struct tm tm_time;
+      memset(&tm_time, 0, sizeof(tm_time));
+      tm_time.tm_sec=(buffer[0x4e]-'0')*10+(buffer[0x4f]-'0');      /* seconds 0-59 */
+      tm_time.tm_min=(buffer[0x4c]-'0')*10+(buffer[0x4d]-'0');      /* minutes 0-59 */
+      tm_time.tm_hour=(buffer[0x4a]-'0')*10+(buffer[0x4b]-'0');      /* hours   0-23*/
+      tm_time.tm_mday=(buffer[0x47]-'0')*10+(buffer[0x48]-'0');	/* day of the month 1-31 */
+      tm_time.tm_mon=(buffer[0x44]-'0')*10+(buffer[0x45]-'0')-1;	/* month 0-11 */
+      tm_time.tm_year=(buffer[0x3f]-'0')*1000+(buffer[0x40]-'0')*100+
+	(buffer[0x41]-'0')*10+(buffer[0x42]-'0')-1900;        	/* year */
+      tm_time.tm_isdst = -1;		/* unknown daylight saving time */
+      file_recovery_new->time=mktime(&tm_time);
+    }
+    return 1;
+  }
+  return 0;
+}
+
+static void register_header_check_ddf(file_stat_t *file_stat)
+{
+  register_header_check(0, ddf3_header, sizeof(ddf3_header), &header_check_ddf, file_stat);
+  register_header_check(0, ddf4_header, sizeof(ddf4_header), &header_check_ddf, file_stat);
+}