From 804ee058a0974a4c904731821a511c2e24045270 Mon Sep 17 00:00:00 2001
From: Christophe Grenier <grenier@cgsecurity.org>
Date: Fri, 23 Sep 2011 20:17:08 +0200
Subject: [PATCH] PhotoRec: recover pds sonar data files created by Reson
 software

---
 src/Makefile.am |  1 +
 src/file_list.c |  2 ++
 src/file_pds.c  | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+)
 create mode 100644 src/file_pds.c

diff --git a/src/Makefile.am b/src/Makefile.am
index 52d59182..b02bc81d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -178,6 +178,7 @@ file_C			= filegen.c \
 			  file_pct.c \
 			  file_pcx.c \
 			  file_pdf.c \
+			  file_pds.c \
 			  file_pfx.c \
 			  file_png.c \
 			  file_pnm.c \
diff --git a/src/file_list.c b/src/file_list.c
index c24717a9..e6bb341c 100644
--- a/src/file_list.c
+++ b/src/file_list.c
@@ -180,6 +180,7 @@ extern const file_hint_t file_hint_pcap;
 extern const file_hint_t file_hint_pct;
 extern const file_hint_t file_hint_pcx;
 extern const file_hint_t file_hint_pdf;
+extern const file_hint_t file_hint_pds;
 extern const file_hint_t file_hint_pfx;
 extern const file_hint_t file_hint_png;
 extern const file_hint_t file_hint_pnm;
@@ -419,6 +420,7 @@ file_enable_t list_file_enable[]=
   { .enable=0, .file_hint=&file_hint_pct  },
   { .enable=0, .file_hint=&file_hint_pcx  },
   { .enable=0, .file_hint=&file_hint_pdf  },
+  { .enable=0, .file_hint=&file_hint_pds  },
   { .enable=0, .file_hint=&file_hint_pfx  },
   { .enable=0, .file_hint=&file_hint_png  },
   { .enable=0, .file_hint=&file_hint_pnm  },
diff --git a/src/file_pds.c b/src/file_pds.c
new file mode 100644
index 00000000..bf305f6c
--- /dev/null
+++ b/src/file_pds.c
@@ -0,0 +1,66 @@
+/*
+
+    File: file_pds.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>
+#include "types.h"
+#include "filegen.h"
+
+static void register_header_check_pds(file_stat_t *file_stat);
+
+const file_hint_t file_hint_pds= {
+  .extension="pds",
+  .description="Reson - Sonar Data",
+  .min_header_distance=0,
+  .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+  .recover=1,
+  .enable_by_default=1,
+  .register_header_check=&register_header_check_pds
+};
+
+static const unsigned char pds_header[25]=  {
+  0x0c, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00,
+  0x04, 0x5b, 'H' , 'E' , 'A' , 'D' , 'E' , 'R' ,
+  0x5d
+};
+
+static int header_check_pds(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[0], pds_header, sizeof(pds_header))==0)
+  {
+    reset_file_recovery(file_recovery_new);
+    file_recovery_new->extension=file_hint_pds.extension;
+    return 1;
+  }
+  return 0;
+}
+
+static void register_header_check_pds(file_stat_t *file_stat)
+{
+  register_header_check(0, pds_header, sizeof(pds_header), &header_check_pds, file_stat);
+}