httpfsys.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: httpfsys.cpp,v 1.28.2.5 2004/07/13 21:00:44 bobclark Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

#include "hlxclib/stdio.h"
#include "hlxclib/string.h"
#include "hlxclib/stdlib.h"
#include "hlxclib/sys/types.h"
#include "hlxclib/sys/stat.h"

#include "httpfsys.ver"
#include "hxtypes.h"
#include "hxcom.h"
#include "hxstrutl.h"
#include "hxerror.h"
#include "hxcomm.h"
#include "ihxpckts.h"
#include "hxfiles.h"
#include "hxplugn.h"
#include "hxplgns.h"
#include "hxengin.h"
#include "hxprefs.h"
#include "ihxpckts.h"
#include "hxmon.h"
#include "hxrendr.h"
#include "hxpends.h"
#include "hxauthn.h"
#include "hxtbuf.h"
#include "hxtset.h"
#include "ihxident.h"
#include "perplex.h"

#include "chxpckts.h"

#include "dbcs.h"
#include "chunkres.h"
#include "hxslist.h"
#include "httppars.h"
#include "httpmsg.h"
#include "mimehead.h"
#include "portaddr.h"
#include "hxver.h"
#include "hxtick.h"
#include "hxurl.h"

#include "ihxcookies.h"

#include "timerep.h"
#include "cache.h"
#include "unkimp.h"
#include "hxdir.h"
#include "rtsputil.h"
#if defined(HELIX_FEATURE_HTTP_GZIP)
#include "zlib.h"
#include "decoder.h"
#endif
#include "pacutil.h"
#include "httpfsys.h"
#include "ihxcookies2.h"

#ifdef _MACINTOSH
//#include "../dcondev/dcon.h"
#endif

#if defined(_CARBON) || defined(_MAC_MACHO)
#define USE_TEMP_CACHE_LOCATION 1
#include "filespecutils.h"
#endif

#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE
static const char HX_THIS_FILE[] = __FILE__;
#endif

#ifdef _AIX
#include "dllpath.h"
ENABLE_MULTILOAD_DLLACCESS_PATHS(Httpfsys);
#endif

#define DEF_HTTP_PORT       80
#define DEF_HTTP_PORT_STR   ":80/"
#define ALLOCATION_SIZE     1024

#ifdef _WIN16
#define MAX_RECURSION_LEVEL     10
#elif _LINUX
#define MAX_RECURSION_LEVEL     30
#elif defined(_MACINTOSH)
#define MAX_RECURSION_LEVEL     20
#else
// XXXNH: reduced from 200 to 50 to fix stack overflow in ActiveX
#define MAX_RECURSION_LEVEL     50
#endif

#undef  LOG_DATA
#define MAX_CACHE_SIZE          (64 * 1024 * 1024)
#define CACHE_DEFAULT_TTL_SECS  (1 * 60 * 60)

#define  LOG_FILE               "C:/Temp/cached-httpfsys.log"
#include "http_debug.h"

#include "db.h"

#include <string.h>

UINT32 g_ulDefTtl;

#ifndef USE_TEMP_CACHE_LOCATION
#define DEF_CACHE_DB            "cache_db"
#define MAX_CACHE_FILENAME      1024
#else
#define DEF_CACHE_DB            "helix_http_cache_db"
#endif // USE_TEMP_CACHE_LOCATION

CCacheEntry*   g_pCacheEntry = NULL;
IHXBuffer*    CreateBufferFromValues (IHXValues *pHeaderValues);

// default if no timeouts in preferences.
#define DEF_HTTP_SERVER_TIMEOUT     (20 * MILLISECS_PER_SECOND)
#define DEF_HTTP_CONNECT_TIMEOUT    (30 * MILLISECS_PER_SECOND)

// default user agent header
#define DEF_USER_AGENT		"RMA/1.0 (compatible; RealMedia)"

// threshhold to see if it's better to do a seek or
// just wait for old-fashioned reading to catch up
#define BYTE_RANGE_SEEK_THRESHHOLD (4 * 1024)

const char* CHTTPFileSystem::zm_pDescription    = "RealNetworks HTTP File System with CHTTP Support";
const char* CHTTPFileSystem::zm_pCopyright      = HXVER_COPYRIGHT;
const char* CHTTPFileSystem::zm_pMoreInfoURL    = HXVER_MOREINFO;
const char* CHTTPFileSystem::zm_pShortName      = "pn-http";

/// This name is used to indicate the http server is 
/// actually RealServer. If the server team changes 
/// the http response header field, Server: then
/// this value needs to be changed accordingly.
#define REALSERVER_RESPONSE_NAME    "RealServer"

//#define SUPPORT_SECURE_SOCKETS
//#define CREATE_LOG_DUMP
//#define LOG_DUMP_FILE	"c:/temp/avi.txt"

#ifdef SUPPORT_SECURE_SOCKETS
const char* CHTTPFileSystem::zm_pProtocol       = "http|chttp|https";
#else
const char* CHTTPFileSystem::zm_pProtocol       = "http|chttp";
#endif

BOOL CHTTPFileSystem::m_bSaveNextStream = FALSE;
//CHXString CHTTPFileSystem::m_SaveFileName( "" );
CHXString CHTTPFileSystem::m_SaveFileName;


static INT32 g_nRefCount_http  = 0;

#define WWW_AUTHENTICATION_RECENT_KEY "authentication.http.realm.recent"
#define PROXY_AUTHENTICATION_RECENT_KEY "proxy-authentication.http.realm.recent"

#ifdef USE_TEMP_CACHE_LOCATION
static void SetBufferToCacheFilePath(IHXBuffer* pBuffer)
{
    // For Mac Carbon, we put it in the Cleanup at Startup folder since the user may not
    // have permission to write into the app's directory
    CHXDirSpecifier tempDir = CHXFileSpecUtils::GetSystemTempDirectory();
    HX_ASSERT(CHXFileSpecUtils::DirectoryExists(tempDir));

    CHXFileSpecifier cacheFileSpec = tempDir.SpecifyChildFile(DEF_CACHE_DB);

    CHXString strCachePath = cacheFileSpec.GetPathName();
	
    pBuffer->Set((UINT8*) (const char *) strCachePath, 1 + strCachePath.GetLength());
}
#endif

/****************************************************************************
 *
 *  Function:
 *
 *      CHTTPFileSystem::HXCreateInstance()
 *
 *  Purpose:
 *
 *      Function implemented by all plugin DLL's to create an instance of
 *      any of the objects supported by the DLL. This method is similar to
 *      Window's CoCreateInstance() in its purpose, except that it only
 *      creates objects from this plugin DLL.
 *
 *      NOTE: Aggregation is never used. Therefore an outer unknown is
 *      not passed to this function, and you do not need to code for this
 *      situation.
 *
 */
HX_RESULT STDAPICALLTYPE CHTTPFileSystem::HXCreateInstance
(
    IUnknown**  /*OUT*/ ppIUnknown
)
{
    // Do NOT check for expiration.  Needed for Auto Upgrade.

    *ppIUnknown = (IUnknown*)(IHXPlugin*)new CHTTPFileSystem();
    if (*ppIUnknown)
    {
        (*ppIUnknown)->AddRef();
        return HXR_OK;
    }
    return HXR_OUTOFMEMORY;
}

/****************************************************************************
 *
 *  Function:
 *
 *      CHTTPFileSystem::HXShutdown()
 *
 *  Purpose:
 *
 *      Function implemented by all plugin DLL's to free any *global*
 *      resources. This method is called just before the DLL is unloaded.
 *
 */
HX_RESULT STDAPICALLTYPE CHTTPFileSystem::HXShutdown(void)
{
    // Joshe 7/19/2001:
    // because HXShutdown sometimes gets called but httpfsys can be loaded 
    // from CHXIndependentHttp, we need this hack check to work around 
    // the crashes caused when HXShutdown is called when it shouldn't
    // it's easier to fix here than to change plugin handler to query 
    // CanUnload first, though that is probably the right thing to do eventually
    if(FAILED(CanUnload()))
    {
	return HXR_OK;
    }

    if (g_pCacheEntry) 
    {
        g_pCacheEntry->close();
        delete g_pCacheEntry;
        g_pCacheEntry = NULL;
    }

    return HXR_OK;
}

/****************************************************************************
 * 
 *  Function:
 * 
 *      CanUnload()
 * 
 *  Purpose:
 * 
 *      Function implemented by all plugin DLL's if it returns HXR_OK 
 *      then the pluginhandler can unload the DLL
 *
 */
HX_RESULT CHTTPFileSystem::CanUnload(void)
{
    return (g_nRefCount_http ? HXR_FAIL : HXR_OK);
}


BEGIN_INTERFACE_LIST(CHTTPFileSystem)
    INTERFACE_LIST_ENTRY(IID_IHXPlugin, IHXPlugin)
    INTERFACE_LIST_ENTRY(IID_IHXFileSystemObject, IHXFileSystemObject)
    INTERFACE_LIST_ENTRY(IID_IHXFileSystemCache, IHXFileSystemCache)
    INTERFACE_LIST_ENTRY(IID_IHXHTTPAutoStream, IHXHTTPAutoStream)
END_INTERFACE_LIST

CHTTPFileSystem::CHTTPFileSystem() : 
    m_pContext(NULL)
    , m_pOptions(NULL)
{
    g_nRefCount_http++;
}

CHTTPFileSystem::~CHTTPFileSystem()
{
    g_nRefCount_http--;
    HX_RELEASE(m_pContext);
    HX_RELEASE(m_pOptions);
}

/************************************************************************
 *  Method:
 *    IHXPlugin::InitPlugin
 *  Purpose:
 *    Initializes the plugin for use. This interface must always be
 *    called before any other method is called. This is primarily needed
 *    so that the plugin can have access to the context for creation of
 *    IHXBuffers and IMalloc.
 */
STDMETHODIMP CHTTPFileSystem::InitPlugin(IUnknown* /*IN*/ pContext)
{
    /* This plugin does not need any context */
    HX_RELEASE(m_pContext);
    m_pContext = pContext;
    if (m_pContext)
    {
        m_pContext->AddRef();
    }
    return HXR_OK;
}

/************************************************************************
 *  Method:
 *    IHXPlugin::GetPluginInfo
 *  Purpose:
 *    Returns the basic information about this plugin. Including:
 *
 *    unInterfaceCount  the number of standard RMA interfaces
 *                      supported by this plugin DLL.
 *    pIIDList          array of IID's for standard RMA interfaces
 *                      supported by this plugin DLL.
 *    bLoadMultiple     whether or not this plugin DLL can be loaded
 *                      multiple times. All File Formats must set
 *                      this value to TRUE.
 *    pDescription      which is used in about UIs (can be NULL)
 *    pCopyright        which is used in about UIs (can be NULL)
 *    pMoreInfoURL      which is used in about UIs (can be NULL)
 */
STDMETHODIMP CHTTPFileSystem::GetPluginInfo
(
    REF(BOOL)        /*OUT*/ bLoadMultiple,
    REF(const char*) /*OUT*/ pDescription,
    REF(const char*) /*OUT*/ pCopyright,
    REF(const char*) /*OUT*/ pMoreInfoURL,
    REF(ULONG32)     /*OUT*/ ulVersionNumber
)
{
    bLoadMultiple = TRUE;   // Must be true for file formats.

    pDescription    = zm_pDescription;
    pCopyright      = zm_pCopyright;
    pMoreInfoURL    = zm_pMoreInfoURL;
    ulVersionNumber = TARVER_ULONG32_VERSION;

    return HXR_OK;
}

STDMETHODIMP CHTTPFileSystem::GetFileSystemInfo
(
    REF(const char*) /*OUT*/ pShortName,
    REF(const char*) /*OUT*/ pProtocol
)
{
    pShortName  = zm_pShortName;
    pProtocol   = zm_pProtocol;

    return HXR_OK;
}

STDMETHODIMP
CHTTPFileSystem::InitFileSystem(IHXValues* options)
{
    LOGX ((szDbgTemp, "InitFileSystem()"));

    if (options)
    {
	m_pOptions = options;
	m_pOptions->AddRef();
    }

    return HXR_OK;
}

/////////////////////////////////////////////////////////////////////////
//  Method:
//      IHXFileSystemObject::CreateFile
//  Purpose:
//      TBD
//
STDMETHODIMP CHTTPFileSystem::CreateFile
(
    IUnknown**  /*OUT*/ ppFileObject
)
{
    LOGX ((szDbgTemp, "CreateFile()"));
    CHTTPFileObject* pFileObj = CHTTPFileObject::CreateObject();
    if (pFileObj)
    {
        pFileObj->InitObject(NULL, this, m_pContext, m_pOptions);

	if( m_bSaveNextStream )
	{
	    pFileObj->SetDestinationFile( m_SaveFileName );
            m_bSaveNextStream = FALSE;
	}

        if(HXR_OK == pFileObj->QueryInterface(IID_IUnknown,
                                            (void**)ppFileObject))
        {
            return HXR_OK;
        }
        return HXR_FAIL;
    }
    return HXR_OUTOFMEMORY;
}

/////////////////////////////////////////////////////////////////////////
//  Method:
//     CHTTPFileSystem::CreateDir
//  Purpose:
//     TBD
//
STDMETHODIMP CHTTPFileSystem::CreateDir
(
    IUnknown**    /*OUT*/ ppDirObject
)
{
    return HXR_NOTIMPL;
}