From 2b460a04790c76a1bd482320ea7c8eabdc708809 Mon Sep 17 00:00:00 2001
From: Christophe Grenier <grenier@cgsecurity.org>
Date: Fri, 12 Jun 2015 19:51:43 +0200
Subject: [PATCH] PhotoRec: recover Mozilla bookmarks .jsonlz4

---
 src/Makefile.am    |  1 +
 src/file_jsonlz4.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++
 src/file_list.c    |  2 ++
 3 files changed, 65 insertions(+)
 create mode 100644 src/file_jsonlz4.c

diff --git a/src/Makefile.am b/src/Makefile.am
index a9b66194..e6988328 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -157,6 +157,7 @@ file_C			= filegen.c \
 			  file_it.c \
 			  file_itu.c \
 			  file_jpg.c \
+			  file_jsonlz4.c \
 			  file_kdb.c \
 			  file_kdbx.c \
 			  file_ldf.c \
diff --git a/src/file_jsonlz4.c b/src/file_jsonlz4.c
new file mode 100644
index 00000000..51f993c0
--- /dev/null
+++ b/src/file_jsonlz4.c
@@ -0,0 +1,62 @@
+/*
+
+    File: file_jsonlz4.c
+
+    Copyright (C) 2015 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"
+#include "common.h"
+
+static void register_header_check_jsonlz4(file_stat_t *file_stat);
+
+const file_hint_t file_hint_jsonlz4= {
+  .extension="jsonlz4",
+  .description="Mozilla bookmarks",
+  .min_header_distance=0,
+  .max_filesize=PHOTOREC_MAX_SIZE_32,
+  .recover=1,
+  .enable_by_default=1,
+  .register_header_check=&register_header_check_jsonlz4
+};
+
+static int header_check_jsonlz4(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 uint32_t *uncompressed_size=(const uint32_t *)&buffer[8];
+  if(le32(*uncompressed_size)==0)
+    return 0;
+  reset_file_recovery(file_recovery_new);
+  file_recovery_new->extension=file_hint_jsonlz4.extension;
+  file_recovery_new->calculated_file_size=le32(*uncompressed_size);
+  file_recovery_new->data_check=&data_check_size;
+  file_recovery_new->file_check=&file_check_size_lax;
+  return 1;
+}
+
+static void register_header_check_jsonlz4(file_stat_t *file_stat)
+{
+  register_header_check(0, "mozLz40", 8, &header_check_jsonlz4, file_stat);
+}
diff --git a/src/file_list.c b/src/file_list.c
index 922f44e7..e0179a54 100644
--- a/src/file_list.c
+++ b/src/file_list.c
@@ -159,6 +159,7 @@ extern const file_hint_t file_hint_iso;
 extern const file_hint_t file_hint_it;
 extern const file_hint_t file_hint_itunes;
 extern const file_hint_t file_hint_jpg;
+extern const file_hint_t file_hint_jsonlz4;
 extern const file_hint_t file_hint_kdb;
 extern const file_hint_t file_hint_kdbx;
 extern const file_hint_t file_hint_ldf;
@@ -444,6 +445,7 @@ file_enable_t list_file_enable[]=
   { .enable=0, .file_hint=&file_hint_it  },
   { .enable=0, .file_hint=&file_hint_itunes  },
   { .enable=0, .file_hint=&file_hint_jpg  },
+  { .enable=0, .file_hint=&file_hint_jsonlz4  },
   { .enable=0, .file_hint=&file_hint_kdb  },
   { .enable=0, .file_hint=&file_hint_kdbx },
   { .enable=0, .file_hint=&file_hint_ldf  },