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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2013-06-22 14:16:13 (GMT)
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2014-11-08 22:18:07 (GMT)
commitc606f0866c3a2a5db3ef9bc41738ef33eb9612a9 (patch)
tree5847c644cdfff3c1dd55b88b565448087ae89f11 /src/Platform/Buffer.h
downloadVeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.zip
VeraCrypt-c606f0866c3a2a5db3ef9bc41738ef33eb9612a9.tar.gz
Add original TrueCrypt 7.1a sources
Diffstat (limited to 'src/Platform/Buffer.h')
-rw-r--r--src/Platform/Buffer.h115
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diff --git a/src/Platform/Buffer.h b/src/Platform/Buffer.h
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+/*
+ Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+#ifndef TC_HEADER_Platform_Buffer
+#define TC_HEADER_Platform_Buffer
+
+#include "PlatformBase.h"
+#include "Memory.h"
+
+namespace TrueCrypt
+{
+
+ class ConstBufferPtr
+ {
+ public:
+ ConstBufferPtr ()
+ : DataPtr (nullptr), DataSize (0) { }
+ ConstBufferPtr (const byte *data, size_t size)
+ : DataPtr (data), DataSize (size) { }
+ virtual ~ConstBufferPtr () { }
+
+ operator const byte * () const { return DataPtr; }
+
+ bool IsDataEqual (const ConstBufferPtr &other) const { return Memory::Compare (DataPtr, DataSize, other.DataPtr, other.DataSize) == 0; }
+ const byte *Get () const { return DataPtr; }
+ ConstBufferPtr GetRange (size_t offset, size_t size) const;
+ void Set (const byte *data, size_t size) { DataPtr = data; DataSize = size; }
+ size_t Size () const { return DataSize; }
+
+ protected:
+ const byte *DataPtr;
+ size_t DataSize;
+ };
+
+
+ class BufferPtr
+ {
+ public:
+ BufferPtr ()
+ : DataPtr (nullptr), DataSize (0) { }
+ BufferPtr (byte *data, size_t size)
+ : DataPtr (data), DataSize (size) { }
+ virtual ~BufferPtr () { }
+
+ operator byte * () const { return DataPtr; }
+ void CopyFrom (const ConstBufferPtr &bufferPtr) const;
+ void Erase () const { Zero(); }
+ byte *Get () const { return DataPtr; }
+ BufferPtr GetRange (size_t offset, size_t size) const;
+ void Set (byte *data, size_t size) { DataPtr = data; DataSize = size; }
+ size_t Size () const { return DataSize; }
+ void Zero () const { Memory::Zero (DataPtr, DataSize); }
+
+ operator ConstBufferPtr () const { return ConstBufferPtr (DataPtr, DataSize); }
+
+ protected:
+ byte *DataPtr;
+ size_t DataSize;
+ };
+
+ class Buffer
+ {
+ public:
+ Buffer ();
+ Buffer (size_t size);
+ Buffer (const ConstBufferPtr &bufferPtr) { CopyFrom (bufferPtr); }
+ virtual ~Buffer ();
+
+ virtual void Allocate (size_t size);
+ virtual void CopyFrom (const ConstBufferPtr &bufferPtr);
+ virtual byte *Ptr () const { return DataPtr; }
+ virtual void Erase ();
+ virtual void Free ();
+ virtual BufferPtr GetRange (size_t offset, size_t size) const;
+ virtual size_t Size () const { return DataSize; }
+ virtual bool IsAllocated () const { return DataSize != 0; }
+ virtual void Zero ();
+
+ virtual operator byte * () const { return DataPtr; }
+ virtual operator BufferPtr () const { return BufferPtr (DataPtr, DataSize); }
+ virtual operator ConstBufferPtr () const { return ConstBufferPtr (DataPtr, DataSize); }
+
+ protected:
+ byte *DataPtr;
+ size_t DataSize;
+
+ private:
+ Buffer (const Buffer &);
+ Buffer &operator= (const Buffer &);
+ };
+
+ class SecureBuffer : public Buffer
+ {
+ public:
+ SecureBuffer () { }
+ SecureBuffer (size_t size);
+ SecureBuffer (const ConstBufferPtr &bufferPtr) { CopyFrom (bufferPtr); }
+ virtual ~SecureBuffer ();
+
+ virtual void Allocate (size_t size);
+ virtual void Free ();
+
+ private:
+ SecureBuffer (const SecureBuffer &);
+ SecureBuffer &operator= (const SecureBuffer &);
+ };
+
+}
+
+#endif // TC_HEADER_Platform_Buffer