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#ifndef CRYPTOPP_WINPIPES_H
#define CRYPTOPP_WINPIPES_H
#include "config.h"
#ifdef WINDOWS_PIPES_AVAILABLE
#include "network.h"
#include "queue.h"
#include <winsock2.h>
NAMESPACE_BEGIN(CryptoPP)
//! Windows Handle
class WindowsHandle
{
public:
WindowsHandle(HANDLE h = INVALID_HANDLE_VALUE, bool own=false);
WindowsHandle(const WindowsHandle &h) : m_h(h.m_h), m_own(false) {}
virtual ~WindowsHandle();
bool GetOwnership() const {return m_own;}
void SetOwnership(bool own) {m_own = own;}
operator HANDLE() {return m_h;}
HANDLE GetHandle() const {return m_h;}
bool HandleValid() const;
void AttachHandle(HANDLE h, bool own=false);
HANDLE DetachHandle();
void CloseHandle();
protected:
virtual void HandleChanged() {}
HANDLE m_h;
bool m_own;
};
//! Windows Pipe
class WindowsPipe
{
public:
class Err : public OS_Error
{
public:
Err(HANDLE h, const std::string& operation, int error);
HANDLE GetHandle() const {return m_h;}
private:
HANDLE m_h;
};
protected:
virtual HANDLE GetHandle() const =0;
virtual void HandleError(const char *operation) const;
void CheckAndHandleError(const char *operation, BOOL result) const
{assert(result==TRUE || result==FALSE); if (!result) HandleError(operation);}
};
//! pipe-based implementation of NetworkReceiver
class WindowsPipeReceiver : public WindowsPipe, public NetworkReceiver
{
public:
WindowsPipeReceiver();
bool MustWaitForResult() {return true;}
bool Receive(byte* buf, size_t bufLen);
unsigned int GetReceiveResult();
bool EofReceived() const {return m_eofReceived;}
unsigned int GetMaxWaitObjectCount() const {return 1;}
void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
private:
WindowsHandle m_event;
OVERLAPPED m_overlapped;
bool m_resultPending;
DWORD m_lastResult;
bool m_eofReceived;
};
//! pipe-based implementation of NetworkSender
class WindowsPipeSender : public WindowsPipe, public NetworkSender
{
public:
WindowsPipeSender();
bool MustWaitForResult() {return true;}
void Send(const byte* buf, size_t bufLen);
unsigned int GetSendResult();
bool MustWaitForEof() { return false; }
void SendEof() {}
unsigned int GetMaxWaitObjectCount() const {return 1;}
void GetWaitObjects(WaitObjectContainer &container, CallStack const& callStack);
private:
WindowsHandle m_event;
OVERLAPPED m_overlapped;
bool m_resultPending;
DWORD m_lastResult;
};
//! Windows Pipe Source
class WindowsPipeSource : public WindowsHandle, public NetworkSource, public WindowsPipeReceiver
{
public:
WindowsPipeSource(HANDLE h=INVALID_HANDLE_VALUE, bool pumpAll=false, BufferedTransformation *attachment=NULL)
: WindowsHandle(h), NetworkSource(attachment)
{
if (pumpAll)
PumpAll();
}
using NetworkSource::GetMaxWaitObjectCount;
using NetworkSource::GetWaitObjects;
private:
HANDLE GetHandle() const {return WindowsHandle::GetHandle();}
NetworkReceiver & AccessReceiver() {return *this;}
};
//! Windows Pipe Sink
class WindowsPipeSink : public WindowsHandle, public NetworkSink, public WindowsPipeSender
{
public:
WindowsPipeSink(HANDLE h=INVALID_HANDLE_VALUE, unsigned int maxBufferSize=0, unsigned int autoFlushBound=16*1024)
: WindowsHandle(h), NetworkSink(maxBufferSize, autoFlushBound) {}
using NetworkSink::GetMaxWaitObjectCount;
using NetworkSink::GetWaitObjects;
private:
HANDLE GetHandle() const {return WindowsHandle::GetHandle();}
NetworkSender & AccessSender() {return *this;}
};
NAMESPACE_END
#endif
#endif
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