Imported Upstream version 0.79.2

rs01-common.c

@@ -1,5 +1,5 @@
 /*  dvdisaster: Additional error correction for optical media.
- *  Copyright (C) 2004-2009 Carsten Gnoerlich.
+ *  Copyright (C) 2004-2010 Carsten Gnoerlich.
  *  Project home page: http://www.dvdisaster.com
  *  Email: carsten@dvdisaster.com  -or-  cgnoerlich@fsfe.org
  *
@@ -26,6 +26,29 @@
 
 #include "rs01-includes.h"
 
+/***
+ *** Recognize a RS01 error correction file
+ ***/
+
+int RS01Recognize(Method *self, LargeFile *ecc_file)
+{  EccHeader eh;
+   int n;
+
+   LargeSeek(ecc_file, 0);
+   n = LargeRead(ecc_file, &eh, sizeof(EccHeader));
+
+   if(n != sizeof(EccHeader))
+     return FALSE;
+
+   if(strncmp((char*)eh.cookie, "*dvdisaster*", 12))
+     return FALSE;
+
+   if(!strncmp((char*)eh.method, "RS01", 4))
+     return TRUE;
+
+   return FALSE;
+}
+
 /***
  *** Read an image sector from the .iso file.
  ****