chxclientcontext.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: CHXClientContext.cpp,v 1.16.2.4 2004/07/09 01:49:47 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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 * ***** END LICENSE BLOCK ***** */

#include "CHXClientContext.h"
#include "CHXClientBuffer.h"
#include "CHXClientDebug.h"
#include "IHXClientPlayer.h"

#include "enter_hx_headers.h"
#include "hxwintyp.h"
#include "hxwin.h"   // IID_IHXSiteSupplier
#include "hxerror.h" // IID_IHXErrorSink
#include "hxfiles.h" // IHXRequest
#include "ihxpckts.h"
#include "hxcore.h"

#include "hxsmartptr.h"
HX_SMART_POINTER_INLINE( SPIHXBuffer, IHXBuffer );
HX_SMART_POINTER_INLINE( SPIHXStreamSource, IHXStreamSource );
HX_SMART_POINTER_INLINE( SPIHXPlayer, IHXPlayer );
HX_SMART_POINTER_INLINE( SPIHXPlayer2, IHXPlayer2 );
HX_SMART_POINTER_INLINE( SPIHXRequest, IHXRequest );
#include "exit_hx_headers.h"

#include "hlxclib/string.h"
#include "hlxclib/ctype.h"

#define SERVER_AUTHENTICATE_HEADER "WWW-Authenticate"
#define PROXY_AUTHENTICATE_HEADER  "Proxy-Authenticate"
#define SERVER_HEADER "_server"
#define REALM_HEADER  "realm"

CHXClientContext::~CHXClientContext( void )
{
}

CHXClientContext::CHXClientContext( IHXClientPlayer* pClientPlayer, IUnknown* pIUnkSiteSupplier, IUnknown* pIUnkErrorSink, void* userInfo, const HXClientCallbacks* pClientCallbacks )
	: m_UserInfo( userInfo )
	, m_pClientPlayer( pClientPlayer )
	, m_pIUnkSiteSupplier( pIUnkSiteSupplier )
	, m_pIUnkErrorSink( pIUnkErrorSink )
	, m_pClientCallbacks( pClientCallbacks )
	, m_hasRequestedUpgrade( false )
{
	CHXASSERT( m_pClientPlayer ); // Need a valid client player.
}

// XXXSEH: Fill out QI.
BEGIN_INTERFACE_LIST_NOCREATE( CHXClientContext )
    INTERFACE_LIST_ENTRY_MEMBER( IID_IHXSiteSupplier, m_pIUnkSiteSupplier )
    INTERFACE_LIST_ENTRY_MEMBER( IID_IHXErrorSink, m_pIUnkErrorSink )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXHyperNavigate )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXHyperNavigate2 )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXHyperNavigateWithContext )
    //INTERFACE_LIST_ENTRY_SIMPLE( IHXClientRequestSink )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXUpgradeHandler )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXStatusMessage )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXAuthenticationManager )
    INTERFACE_LIST_ENTRY_SIMPLE( IHXAuthenticationManager2 )
END_INTERFACE_LIST

STDMETHODIMP
CHXClientContext::GoToURL( const char* pURL,
						   const char* pTarget )
{
	return Execute( pURL, pTarget, NULL, NULL, NULL ); // XXXSEH: Does pTarget map to pTargetInstance?
}

static char*
CopyStringWithinBoundsTrimmingWhitespace( const char* pStringStart, const char* pStringEnd )
{
	const char* pStringToCopy = pStringStart;
	while ( ( pStringToCopy < pStringEnd ) && isspace( *pStringToCopy ) )
	{
		pStringToCopy++;
	}
	if ( pStringToCopy >= pStringEnd ) return NULL;
	
	const char* pStringToCopyEnd = pStringEnd;
	while ( ( pStringToCopyEnd > pStringToCopy ) && isspace( pStringToCopyEnd[ -1 ] ) )
	{
		pStringToCopyEnd--;
	}
	if ( pStringToCopy >= pStringToCopyEnd ) return NULL;
	
	unsigned long copyStringLength = pStringToCopyEnd - pStringToCopy;
	char* pCopiedString = new char[ copyStringLength + 1 ];
	if ( !pCopiedString ) return NULL;
	
	memcpy( pCopiedString, pStringToCopy, copyStringLength );
	pCopiedString[ copyStringLength ] = '\0';
	
	return pCopiedString;
}

bool
CHXClientContext::HandleURLCommand( const char* pCommand, const char* pTargetInstance )
{
	bool outResult = false; // We assume these are Helix commands.
	
	const char* beginArgumentsDelimiter = strstr( pCommand, "(" );
	if ( beginArgumentsDelimiter )
	{
		unsigned long sizeOfCommand = beginArgumentsDelimiter - pCommand;
		
		// See http://service.real.com/help/library/guides/production8/realpgd.htm Topic 7 Extending SMIL.
		const char* const kHURLCommand = "openwindow";
		if ( ( sizeOfCommand >= strlen( kHURLCommand ) ) &&
			 ( 0 == strncasecmp( pCommand, kHURLCommand, strlen( kHURLCommand ) ) ) )
		{
			const char* pArguments = beginArgumentsDelimiter + 1;
			const char* endArgumentsDelimiter = strstr( pArguments, ")" );
			CHXASSERT( endArgumentsDelimiter );
			if ( endArgumentsDelimiter )
			{
				const char* firstArgumentDelimiter  = strstr( pArguments, "," );
				const char* secondArgumentDelimiter = ( NULL != firstArgumentDelimiter ) ? strstr( ( firstArgumentDelimiter + 1 ), "," ) : NULL;
			
				char* pOpenWindowName = ( NULL != firstArgumentDelimiter ) ? CopyStringWithinBoundsTrimmingWhitespace( pArguments, firstArgumentDelimiter ) : NULL;
				char* pOpenWindowURL = CopyStringWithinBoundsTrimmingWhitespace( ( ( NULL != firstArgumentDelimiter  ) ? ( firstArgumentDelimiter + 1 ) : pArguments ),
																				 ( ( NULL != secondArgumentDelimiter ) ? secondArgumentDelimiter : endArgumentsDelimiter ) );
				char* pPlayModeNameValuePair = ( NULL != secondArgumentDelimiter ) ? CopyStringWithinBoundsTrimmingWhitespace( ( secondArgumentDelimiter + 1 ), endArgumentsDelimiter ) : NULL;

				if ( pOpenWindowName &&
					 ( ( 0 == strcasecmp( pOpenWindowName, "_self" ) ) ||
					   ( 0 == strcasecmp( pOpenWindowName, "_current" ) ) ) )
				{
					m_pClientPlayer->OpenURL( pOpenWindowURL, NULL );
					m_pClientPlayer->Play();
					outResult = true;
				}
				else
				{
					bool isPlayerURL = pTargetInstance && ( 0 == strcasecmp( pTargetInstance, "_player" ) );
					
					// XXXSEH: Should we filter out _new and _blank in pOpenWindowName and just send through NULL instead?
					outResult = m_pClientCallbacks->GoToURL ? m_pClientCallbacks->GoToURL( m_UserInfo, pOpenWindowURL, pOpenWindowName, isPlayerURL ) : false;
				}
				delete [] pPlayModeNameValuePair; // XXXSEH: This isn't currently supported. I'm hopeful we can handle these within hxclientkit.
				delete [] pOpenWindowURL;
				delete [] pOpenWindowName;
			}
		}
	}
	return outResult;
}

bool
CHXClientContext::CallGoToURLCallback( const char* pURL, const char* pTargetInstance )
{
	if ( pURL && *pURL )
	{		
		const char* protocolDelimiter = strstr( pURL, ":" );
		if ( protocolDelimiter )
		{
			// Helix needs to handle these directly.
			const char* const kSupportedProtocols[] = { "rtsp", "pnm", NULL };
			
			unsigned long sizeOfProtocol = protocolDelimiter - pURL;
			int index = 0;
			while ( kSupportedProtocols[ index ] )
			{
				if ( ( sizeOfProtocol == strlen( kSupportedProtocols[ index ] ) ) &&
					 ( 0 == strncmp( pURL, kSupportedProtocols[ index ], sizeOfProtocol ) ) )
				{
					return false;
				}
				++index;
			}
			// Check for command URL's.
			const char* const kCommandURL = "command";
			if ( ( sizeOfProtocol == strlen( kCommandURL ) ) &&
				 ( 0 == strncmp( pURL, kCommandURL, sizeOfProtocol ) ) )
			{
				const char* pCommand = pURL + strlen( kCommandURL ) + 1;
				return HandleURLCommand( pCommand, pTargetInstance );
			}
		}
		// Content intended for Helix.
		if ( pTargetInstance && ( 0 == strcasecmp( pTargetInstance, "_player" ) ) ) return false;

		return m_pClientCallbacks->GoToURL ? m_pClientCallbacks->GoToURL( m_UserInfo, pURL, pTargetInstance, false ) : false;
	}
	return false;
}

STDMETHODIMP
CHXClientContext::Execute( const char* pURL,
						   const char* pTargetInstance,
						   const char* pTargetApplication,
						   const char* pTargetRegion,
						   IHXValues*  pParams )
{
	const char* const kContextPaneTarget = "_rpcontextwin";
	SPIHXBuffer spBuffer;
	if ( ( pTargetInstance && *pTargetInstance &&
		   ( 0 == strcasecmp( kContextPaneTarget, pTargetInstance ) ) ) ||
		 ( pParams && SUCCEEDED( pParams->GetPropertyCString( "sendTo", *spBuffer.AsInOutParam() ) ) &&
		   ( 0 == strcasecmp( kContextPaneTarget, ( const char* ) spBuffer->GetBuffer() ) ) ) )
	{
		// ?rptarget=<kContextPaneTarget>&rpcontextwidth=#####&rpcontextheight=#####
		const INT32 kQueryStringMaxLength = 1 + ( 8 + 1 + strlen( kContextPaneTarget ) ) + 1 + ( 14 + 1 + 5 ) + 1 + ( 15 + 1 + 5 );
		UINT32 origURLLength = strlen( pURL );