About Functions Called by Parser DLLs

The following functions can be called by a parser DLL to perform administrative and functional tasks:

• AddProperty, which is used to add a PropertyInfo structure to the PropertyDatabase.
• AttachPropertyInstance, which is used to attach a property instance to a frame.
• AttachPropertyInstanceEx, which also is used to attach a property to a frame (however, this function creates an additional structure).
• CreatePropertyDatabase, which is used by a parser to create a property database for describing properties that the parser will use to describe its data.
• DestroyPropertyDatabase, which is used to destroy a property database created by calls to CreatePropertyDatabase and AddProperty.
• GetFrameDestinationAddress, which returns a frame destination address.
• GetFrameSourceAddress, which returns a frame source address.
• GetProtocolStartOffset, which returns the offset to a specified protocol in the frame.
• FindPreviousFrame, which finds the previous frame in the current capture context that matches the filter.
• FindNextFrame, which finds the next frame in the current capture context that matches the filter.
• FormatPropertyInstance, which formats the property instance in a generic manner.
• ParserTemporaryLockFrame, which returns a pointer to the first byte of data in the locked frame.