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authorChristophe Grenier <grenier@cgsecurity.org>2015-11-21 10:32:43 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2015-11-21 10:32:43 +0100
commitdc6dc8cce268f288b777c7d703b71617abf59daf (patch)
treefc66b825fba08a905cf46b9117a4aa1d5722181e /src/file_hdr.c
parentf9ee894489b447ae1001f280d8ecbe1159793e6b (diff)
PhotoRec: recover InstallShield .hdr files
Diffstat (limited to 'src/file_hdr.c')
-rw-r--r--src/file_hdr.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/src/file_hdr.c b/src/file_hdr.c
new file mode 100644
index 0000000..0e6e9e6
--- /dev/null
+++ b/src/file_hdr.c
@@ -0,0 +1,81 @@
+/*
+
+ File: file_hdr.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 "common.h"
+#include "filegen.h"
+
+static void register_header_check_hdr(file_stat_t *file_stat);
+
+const file_hint_t file_hint_hdr= {
+ .extension="hdr",
+ .description="InstallShield",
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_hdr
+};
+
+struct hdr_header {
+ uint32_t magic;
+ uint16_t unk1;
+ uint16_t val0100;
+ uint32_t val00000000;
+ uint16_t val0200;
+ uint16_t val0000;
+ uint16_t unk2; /* 0 if cab */
+ uint16_t val0000_bis;
+ uint32_t filesize; /* 0x200 if cab */
+ uint32_t val00000000_bis;
+} __attribute__ ((gcc_struct, __packed__));
+
+static int header_check_hdr(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 hdr_header *hdr=(const struct hdr_header*)buffer;
+ if(le16(hdr->val0100)!=0x100)
+ return 0;
+ if(le32(hdr->val00000000)!=0)
+ return 0;
+ reset_file_recovery(file_recovery_new);
+ if(le16(hdr->unk2)==0 && le32(hdr->filesize)==0x200)
+ {
+ file_recovery_new->extension="cab";
+ return 1;
+ }
+ file_recovery_new->extension=file_hint_hdr.extension;
+ file_recovery_new->calculated_file_size=(uint64_t)le32(hdr->filesize);
+ file_recovery_new->data_check=&data_check_size;
+ file_recovery_new->file_check=&file_check_size;
+ return 1;
+}
+
+static void register_header_check_hdr(file_stat_t *file_stat)
+{
+ register_header_check(0, "ISc(", 4, &header_check_hdr, file_stat);
+}