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authorChristophe Grenier <grenier@cgsecurity.org>2015-04-05 12:12:18 +0200
committerChristophe Grenier <grenier@cgsecurity.org>2015-04-05 12:12:18 +0200
commit12ee6348d5f0b0ebb837ba9061a8ba92ac89390c (patch)
treeb063e04ff8991b5cfe31998bbc0cd60b1317124c /src/file_idx.c
parent79a9c21acd41e05d82c7a6d0e935b35dbc9561f4 (diff)
PhotoRec: recover RT60 .idx files
Diffstat (limited to 'src/file_idx.c')
-rw-r--r--src/file_idx.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/src/file_idx.c b/src/file_idx.c
new file mode 100644
index 0000000..83a2c53
--- /dev/null
+++ b/src/file_idx.c
@@ -0,0 +1,74 @@
+/*
+
+ File: file_idx.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"
+
+static void register_header_check_idx(file_stat_t *file_stat);
+
+const file_hint_t file_hint_idx= {
+ .extension="idx",
+ .description="RT60",
+ .min_header_distance=0,
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_idx
+};
+
+static data_check_t data_check_idx(const unsigned char *buffer, const unsigned int buffer_size, file_recovery_t *file_recovery)
+{
+ while(file_recovery->calculated_file_size + buffer_size/2 >= file_recovery->file_size &&
+ file_recovery->calculated_file_size + 4 < file_recovery->file_size + buffer_size/2)
+ {
+ const unsigned int i=file_recovery->calculated_file_size - file_recovery->file_size + buffer_size/2;
+ if(memcmp(&buffer[i], "RT60", 4)!=0)
+ return DC_STOP;
+ file_recovery->calculated_file_size+=0x30;
+ }
+ return DC_CONTINUE;
+}
+
+static int header_check_idx(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[0x18], "RT60", 4)!=0)
+ return 0;
+ if(file_recovery->data_check==&data_check_idx)
+ return 0;
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_idx.extension;
+ file_recovery_new->data_check=&data_check_idx;
+ file_recovery_new->min_filesize=0x30;
+ return 1;
+}
+
+static void register_header_check_idx(file_stat_t *file_stat)
+{
+ register_header_check(0, "RT60", 4, &header_check_idx, file_stat);
+}