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authorChristophe Grenier <grenier@cgsecurity.org>2009-01-20 08:23:12 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2009-01-20 08:23:12 +0100
commit4aedccda8b0f5abda323556d4bba6856d97bc655 (patch)
treea9138cb7a2c21e9d0a96f5ccc439503397dacb25 /src/file_class.c
parent5d64598673b0f26a39009934c909826623c51518 (diff)
PhotoRec: recover Java .class, Python Compiled Script .pyc, Timezone info and XV thumbnail image
Diffstat (limited to 'src/file_class.c')
-rw-r--r--src/file_class.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/src/file_class.c b/src/file_class.c
new file mode 100644
index 0000000..933528c
--- /dev/null
+++ b/src/file_class.c
@@ -0,0 +1,80 @@
+/*
+
+ File: file_class.c
+
+ Copyright (C) 2009 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_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#include <stdio.h>
+#include "types.h"
+#include "common.h"
+#include "filegen.h"
+
+static void register_header_check_class(file_stat_t *file_stat);
+static int header_check_class(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_class= {
+ .extension="class",
+ .description="Java Class",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_class
+};
+
+/* http://en.wikipedia.org/wiki/Class_(file_format) */
+static const unsigned char class_magic[4]= { 0xCA, 0xFE, 0xBA, 0xBE };
+
+struct class_header {
+ uint32_t magic_number;
+ uint16_t minor_version;
+ uint16_t major_version;
+ uint16_t constant_pool_count;
+};
+
+static void register_header_check_class(file_stat_t *file_stat)
+{
+ register_header_check(0, class_magic, sizeof(class_magic), &header_check_class, file_stat);
+}
+
+static int header_check_class(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 struct class_header *cafe=(const struct class_header *)buffer;
+ if(be32(cafe->magic_number)==0xCafeBabe &&
+ be16(cafe->major_version) >= 45 && be16(cafe->major_version) <= 100 &&
+ be16(cafe->constant_pool_count) > 0)
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_class.extension;
+ return 1;
+ }
+ return 0;
+}