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WindowsPipeSink Class Reference

#include <winpipes.h>

Inheritance diagram for WindowsPipeSink:

WindowsHandle NetworkSink WindowsPipeSender NonblockingSink WindowsPipe NetworkSender Sink Waitable BufferedTransformation Algorithm Waitable Clonable List of all members.

Detailed Description

Windows Pipe Sink.

Definition at line 123 of file winpipes.h.

SIGNALS

virtual void IsolatedInitialize (const NameValuePairs &parameters)
virtual bool IsolatedMessageSeriesEnd (bool blocking)
virtual void Initialize (const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
 initialize or reinitialize this object

virtual bool Flush (bool hardFlush, int propagation=-1, bool blocking=true)
 flush buffered input and/or output

virtual bool MessageSeriesEnd (int propagation=-1, bool blocking=true)
 mark end of a series of messages

virtual void SetAutoSignalPropagation (int propagation)
 set propagation of automatically generated and transfered signals

virtual int GetAutoSignalPropagation () const

ATTACHMENT

virtual bool Attachable ()
 returns whether this object allows attachment

virtual BufferedTransformationAttachedTransformation ()
 returns the object immediately attached to this object or NULL for no attachment

virtual const BufferedTransformationAttachedTransformation () const
virtual void Detach (BufferedTransformation *newAttachment=0)
 delete the current attachment chain and replace it with newAttachment

virtual void Attach (BufferedTransformation *newAttachment)
 add newAttachment to the end of attachment chain


Public Member Functions

 WindowsPipeSink (HANDLE h=INVALID_HANDLE_VALUE, unsigned int maxBufferSize=0, bool autoFlush=false)
bool GetOwnership () const
void SetOwnership (bool own)
 operator HANDLE ()
bool HandleValid () const
void AttachHandle (HANDLE h, bool own=false)
HANDLE DetachHandle ()
void CloseHandle ()
unsigned int GetMaxWaitObjectCount () const
 maximum number of wait objects that this object can return

void GetWaitObjects (WaitObjectContainer &container)
 put wait objects into container

unsigned int Put2 (const byte *inString, unsigned int length, int messageEnd, bool blocking)
 input multiple bytes for blocking or non-blocking processing

unsigned int TimedFlush (unsigned long maxTime, unsigned int targetSize=0)
 flush to device for no more than maxTime milliseconds

void SetMaxBufferSize (unsigned int maxBufferSize)
void SetAutoFlush (bool autoFlush=true)
unsigned int GetMaxBufferSize () const
unsigned int GetCurrentBufferSize () const
bool IsolatedFlush (bool hardFlush, bool blocking)
BufferedTransformationRef ()
 return a reference to this object

virtual std::string AlgorithmName () const
 returns name of this algorithm, not universally implemented yet

virtual ClonableClone () const
 this is not implemented by most classes yet

bool Wait (unsigned long milliseconds)
 wait on this object

bool MustWaitForResult ()
void Send (const byte *buf, unsigned int bufLen)
unsigned int GetSendResult ()
void SendEof ()
unsigned int GetMaxWaitObjectCount () const
 maximum number of wait objects that this object can return

void GetWaitObjects (WaitObjectContainer &container)
 put wait objects into container

virtual bool MustWaitToSend ()
bool Wait (unsigned long milliseconds)
 wait on this object


Static Public Attributes

const std::string NULL_CHANNEL

Protected Member Functions

virtual void HandleChanged ()
const NetworkSenderGetSender () const
unsigned int TransferTo2 (BufferedTransformation &target, unsigned long &transferBytes, const std::string &channel=NULL_CHANNEL, bool blocking=true)
 

unsigned int CopyRangeTo2 (BufferedTransformation &target, unsigned long &begin, unsigned long end=ULONG_MAX, const std::string &channel=NULL_CHANNEL, bool blocking=true) const
virtual void HandleError (const char *operation) const
void CheckAndHandleError (const char *operation, BOOL result) const

Static Protected Member Functions

int DecrementPropagation (int propagation)

Protected Attributes

HANDLE m_h
bool m_own


Member Function Documentation

unsigned int NetworkSink::Put2 const byte *  inString,
unsigned int  length,
int  messageEnd,
bool  blocking
[virtual, inherited]
 

input multiple bytes for blocking or non-blocking processing

Parameters:
messageEnd means how many filters to signal MessageEnd to, including this one

Implements BufferedTransformation.

Definition at line 129 of file network.cpp.

References ByteQueue::CurrentSize(), ByteQueue::FinalizeLazyPut(), INFINITE_TIME, ByteQueue::LazyPut(), NetworkSink::Put2(), NetworkSender::SendEof(), NetworkSink::TimedFlush(), and ByteQueue::UndoLazyPut().

Referenced by NetworkSink::Put2().

unsigned int NetworkSink::TimedFlush unsigned long  maxTime,
unsigned int  targetSize = 0
[virtual, inherited]
 

flush to device for no more than maxTime milliseconds

This function will repeatedly attempt to flush data to some device, until the queue is empty, or a total of maxTime milliseconds have elapsed. If maxTime == 0, at least one attempt will be made to flush some data, but it is likely that not all queued data will be flushed, even if the device is ready to receive more data without waiting. If you want to flush as much data as possible without waiting for the device, call this function in a loop. For example: while (sink.TimedFlush(0) > 0) {}

Returns:
number of bytes flushed

Implements NonblockingSink.

Definition at line 157 of file network.cpp.

References ByteQueue::CurrentSize(), Timer::ElapsedTime(), NetworkSender::GetSendResult(), INFINITE_TIME, ByteQueue::IsEmpty(), NetworkSender::MustWaitForResult(), NetworkSender::MustWaitToSend(), NetworkSender::Send(), ByteQueue::Spy(), NetworkSink::TimedFlush(), and Waitable::Wait().

Referenced by NetworkSink::Put2(), and NetworkSink::TimedFlush().

BufferedTransformation& BufferedTransformation::Ref  )  [inline, inherited]
 

return a reference to this object

This function is useful for passing a temporary BufferedTransformation object to a function that takes a non-const reference.

Definition at line 681 of file cryptlib.h.

virtual byte* BufferedTransformation::CreatePutSpace unsigned int &  size  )  [inline, virtual, inherited]
 

request space which can be written into by the caller, and then used as input to Put()

Note:
The purpose of this method is to help avoid doing extra memory allocations.

Definition at line 700 of file cryptlib.h.

virtual unsigned int BufferedTransformation::PutModifiable2 byte *  inString,
unsigned int  length,
int  messageEnd,
bool  blocking
[inline, virtual, inherited]
 

input multiple bytes that may be modified by callee for blocking or non-blocking processing

Parameters:
messageEnd means how many filters to signal MessageEnd to, including this one

Reimplemented in FilterWithBufferedInput.

Definition at line 718 of file cryptlib.h.

bool BufferedTransformation::Flush bool  hardFlush,
int  propagation = -1,
bool  blocking = true
[virtual, inherited]
 

flush buffered input and/or output

Parameters:
hardFlush is used to indicate whether all data should be flushed
Note:
Hard flushes must be used with care. It means try to process and output everything, even if there may not be enough data to complete the action. For example, hard flushing a HexDecoder would cause an error if you do it after inputing an odd number of hex encoded characters. For some types of filters, for example ZlibDecompressor, hard flushes can only be done at "synchronization points". These synchronization points are positions in the data stream that are created by hard flushes on the corresponding reverse filters, in this example ZlibCompressor. This is useful when zlib compressed data is moved across a network in packets and compression state is preserved across packets, as in the ssh2 protocol.

Reimplemented in Filter.

Definition at line 166 of file cryptlib.cpp.

References BufferedTransformation::AttachedTransformation(), and BufferedTransformation::Flush().

Referenced by BufferedTransformation::Flush().

bool BufferedTransformation::MessageSeriesEnd int  propagation = -1,
bool  blocking = true
[virtual, inherited]
 

mark end of a series of messages

There should be a MessageEnd immediately before MessageSeriesEnd.

Reimplemented in Filter.

Definition at line 172 of file cryptlib.cpp.

References BufferedTransformation::AttachedTransformation(), and BufferedTransformation::MessageSeriesEnd().

Referenced by BufferedTransformation::MessageSeriesEnd().

virtual void BufferedTransformation::SetAutoSignalPropagation int  propagation  )  [inline, virtual, inherited]
 

set propagation of automatically generated and transfered signals

propagation == 0 means do not automaticly generate signals

Definition at line 758 of file cryptlib.h.

unsigned long BufferedTransformation::MaxRetrievable  )  const [virtual, inherited]
 

returns number of bytes that is currently ready for retrieval

All retrieval functions return the actual number of bytes retrieved, which is the lesser of the request number and MaxRetrievable().

Definition at line 226 of file cryptlib.cpp.

References BufferedTransformation::AttachedTransformation(), and BufferedTransformation::CopyTo().

bool BufferedTransformation::GetNextMessage  )  [virtual, inherited]
 

start retrieving the next message

Returns false if no more messages exist or this message is not completely retrieved.

Definition at line 315 of file cryptlib.cpp.

References BufferedTransformation::AnyMessages(), and BufferedTransformation::AttachedTransformation().

virtual bool BufferedTransformation::Attachable  )  [inline, virtual, inherited]
 

returns whether this object allows attachment

Some BufferedTransformation objects (e.g. Filter objects) allow other BufferedTransformation objects to be attached. When this is done, the first object instead of buffering its output, sents that output to the attached object as input. The entire attachment chain is deleted when the anchor object is destructed.

Reimplemented in Filter.

Definition at line 906 of file cryptlib.h.

Referenced by BufferedTransformation::Attach().

bool Waitable::Wait unsigned long  milliseconds  )  [inherited]
 

wait on this object

same as creating an empty container, calling GetWaitObjects(), and calling Wait() on the container

Definition at line 247 of file wait.cpp.

References Waitable::GetWaitObjects(), WaitObjectContainer::Wait(), and Waitable::Wait().

Referenced by NetworkSource::GeneralPump2(), NetworkSink::TimedFlush(), and Waitable::Wait().

bool Waitable::Wait unsigned long  milliseconds  )  [inherited]
 

wait on this object

same as creating an empty container, calling GetWaitObjects(), and calling Wait() on the container

Definition at line 247 of file wait.cpp.

References Waitable::GetWaitObjects(), WaitObjectContainer::Wait(), and Waitable::Wait().

Referenced by NetworkSource::GeneralPump2(), NetworkSink::TimedFlush(), and Waitable::Wait().


The documentation for this class was generated from the following file:
Generated on Wed Jul 28 08:07:17 2004 for Crypto++ by doxygen 1.3.7