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include/platform/filesystem/io_crypto.h

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+/* -----------------------------------------------------------------------------
+	GSFramework
+	Copyright 2001-2013 Emmanuel Julien. All Rights Reserved.
+----------------------------------------------------------------------------- */
+
+
+#ifndef	__NIOCRYPTO__
+#define	__NIOCRYPTO__
+
+
+		#include "filesystem/io_memory.h"
+		#include "memory/nauto_ptr.h"
+
+
+namespace GS {
+	namespace IO {
+
+//
+class	CryptoHandle : public Handle
+{
+friend	class	Crypto;
+
+		AutoPtr <Handle> cached_h;
+
+		String		path;
+		Mode		io_mode;
+
+		CryptoHandle(Base *, Handle *, const char *, Mode);
+
+public:
+
+		~CryptoHandle();
+};
+
+/*!
+	@short	I/O Crypto proxy.
+	@author	Emmanuel Julien (ejulien@nworks.fr)
+*/
+class	Crypto : public Base
+{
+		String		key;
+
+		SharedPtr <Base> wrapped_io;
+		SharedPtr <Memory> cache_io;
+
+		void		Encrypt(Array <char> &);
+		void		Decrypt(Array <char> &);
+
+public:
+
+virtual	uint		GetCaps() const;
+
+virtual	Handle		*Open(const char *, Mode = ModeRead);
+virtual	void		Close(Handle *);
+
+virtual	bool		Delete(const char *);
+
+virtual	size_t		Tell(Handle *);
+virtual	size_t		Seek(Handle *, ptrdiff_t offset, SeekRef = SeekCurrent);
+
+virtual	size_t		Read(Handle *, void *, size_t);
+virtual	size_t		Write(Handle *, const void *, size_t);
+
+virtual	bool		MkDir(const char *);
+
+		Crypto(Base *, const char *key);
+};
+
+	} // IO
+} // GS
+
+
+#endif	// __NIOCRYPTO__