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authorChristophe Grenier <grenier@cgsecurity.org>2016-02-21 10:39:08 +0100
committerChristophe Grenier <grenier@cgsecurity.org>2016-02-21 10:39:08 +0100
commitc6ad9068b3a0f8092927678ada9f2012900ad2a2 (patch)
treee72aa9384ce0fc21ce4428acc6f33816037a17f5 /src/file_xml.c
parent69e442c2f004ecdae61e9223d1259e3aeb010c0b (diff)
PhotoRec: recover Symantec encrypted xml files
Diffstat (limited to 'src/file_xml.c')
-rw-r--r--src/file_xml.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/file_xml.c b/src/file_xml.c
new file mode 100644
index 0000000..62fd28f
--- /dev/null
+++ b/src/file_xml.c
@@ -0,0 +1,113 @@
+/*
+
+ File: file_xml.c
+
+ Copyright (C) 2016 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 "log.h"
+
+static void register_header_check_xml(file_stat_t *file_stat);
+
+const file_hint_t file_hint_xml= {
+ .extension="xml",
+ .description="Symantec encrypted xml files",
+ .max_filesize=PHOTOREC_MAX_FILE_SIZE,
+ .recover=1,
+ .enable_by_default=1,
+ .register_header_check=&register_header_check_xml
+};
+
+static void file_rename_xml(file_recovery_t *file_recovery)
+{
+ static const char fn[]="<\0f\0i\0l\0e\0n\0a\0m\0e\0>\0";
+ FILE *file;
+ char buffer[4096];
+ size_t lu;
+ unsigned int i;
+ if((file=fopen(file_recovery->filename, "rb"))==NULL)
+ return;
+ if((lu=fread(&buffer, 1, sizeof(buffer)-1, file)) <= 0)
+ {
+ fclose(file);
+ return ;
+ }
+ fclose(file);
+ buffer[lu]='\0';
+ buffer[lu+1]='\0';
+ buffer[4096-21]='\0';
+ buffer[4096-20]='\0';
+ for(i=0; i+20<lu && !(buffer[i]==0 && buffer[i+1]==0); i+=2)
+ {
+ if(memcmp(&buffer[i], fn, 20)==0)
+ {
+ const char *title=&buffer[i+20];
+ int j;
+ for(j=0;
+ i+20+j+1<lu && !(title[j]==0 && title[j+1]==0) && !(title[j]=='<' && title[j+1]==0);
+ j+=2)
+ {
+ }
+ file_rename_unicode(file_recovery, title, j, 0, NULL, 1);
+ return ;
+ }
+ }
+}
+
+static int header_check_xml(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)
+{
+ reset_file_recovery(file_recovery_new);
+ file_recovery_new->extension=file_hint_xml.extension;
+ file_recovery_new->min_filesize=512;
+ file_recovery_new->file_rename=&file_rename_xml;
+ return 1;
+}
+
+static void register_header_check_xml(file_stat_t *file_stat)
+{
+ static const unsigned char xml_header[142]= {
+ 0x3c, 0x00, 0x3f, 0x00, 'x' , 0x00, 'm' , 0x00,
+ 'l' , 0x00, ' ' , 0x00, 'v' , 0x00, 'e' , 0x00,
+ 'r' , 0x00, 's' , 0x00, 'i' , 0x00, 'o' , 0x00,
+ 'n' , 0x00, 0x3d, 0x00, 0x22, 0x00, '1' , 0x00,
+ '.' , 0x00, '0' , 0x00, 0x22, 0x00, ' ' , 0x00,
+ 'e' , 0x00, 'n' , 0x00, 'c' , 0x00, 'o' , 0x00,
+ 'd' , 0x00, 'i' , 0x00, 'n' , 0x00, 'g' , 0x00,
+ 0x3d, 0x00, 0x22, 0x00, 'U' , 0x00, 'T' , 0x00,
+ 'F' , 0x00, 0x2d, 0x00, '1' , 0x00, '6' , 0x00,
+ 0x22, 0x00, 0x3f, 0x00, 0x3e, 0x00, 0x3c, 0x00,
+ 0x21, 0x00, 0x2d, 0x00, 0x2d, 0x00, 'G' , 0x00,
+ 'E' , 0x00, 'T' , 0x00, 'R' , 0x00, 'S' , 0x00,
+ 'F' , 0x00, 'i' , 0x00, 'l' , 0x00, 'e' , 0x00,
+ 'H' , 0x00, 'e' , 0x00, 'a' , 0x00, 'd' , 0x00,
+ 'e' , 0x00, 'r' , 0x00, 'S' , 0x00, 'i' , 0x00,
+ 'z' , 0x00, 'e' , 0x00, 0x3d, 0x00, '0' , 0x00,
+ 'x' , 0x00, '0' , 0x00, '0' , 0x00, '0' , 0x00,
+ '0' , 0x00, '0' , 0x00, '8' , 0x00
+ };
+ register_header_check(0, xml_header, sizeof(xml_header), &header_check_xml, file_stat);
+}