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authorChristophe Grenier <grenier@cgsecurity.org>2010-04-27 09:10:52 +0200
committerChristophe Grenier <grenier@cgsecurity.org>2010-04-27 09:10:52 +0200
commitf34e94c3fba7a05c070df6b2faf9cd53dc65d4af (patch)
treed6b2867a09113808e0f7c61bb2ff1bddf20bad79 /src/file_dex.c
parent65fe88bd1d06cd3a86448ac16f7587b97fbf3909 (diff)
PhotoRec: recover Dalvik .dex files
Diffstat (limited to 'src/file_dex.c')
-rw-r--r--src/file_dex.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/file_dex.c b/src/file_dex.c
new file mode 100644
index 0000000..1b0787c
--- /dev/null
+++ b/src/file_dex.c
@@ -0,0 +1,65 @@
+/*
+
+ File: file_dex.c
+
+ Copyright (C) 2010 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_dex(file_stat_t *file_stat);
+static int header_check_dex(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_dex= {
+ .extension="dex",
+ .description="Dalvik",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_dex
+};
+
+static const unsigned char dex_header[5]= {'d','e','x','\n','0'};
+
+static void register_header_check_dex(file_stat_t *file_stat)
+{
+ register_header_check(0, dex_header,sizeof(dex_header), &header_check_dex, file_stat);
+}
+
+static int header_check_dex(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, dex_header, sizeof(dex_header))==0 && buffer[7]==0x00)
+ {
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_dex.extension;
+ file_recovery_new->calculated_file_size=(uint64_t)buffer[0x20]+(((uint64_t)buffer[0x21])<<8)+(((uint64_t)buffer[0x22])<<16)+(((uint64_t)buffer[0x23])<<24);
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+ }
+ return 0;
+}