webengine/wmlengine/src/hed/src/MimeTable.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 13:31:38 +0200
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permissions -rw-r--r--
Revision: 200951 Kit: 201001
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/*
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* Copyright (c) 2000 - 2001 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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*
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*/
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#include <e32std.h>
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#include <stdarg.h>
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#include "nw_hed_mimetablei.h"
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#include "nwx_http_defs.h"
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#include "nwx_string.h"
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#include "nw_imagech_epoc32contenthandler.h"
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static
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NW_Bool NW_HED_MimeTable_IsImageContentType(NW_Http_ContentTypeString_t contentTypeString)
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  {
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  NW_Int32 pos = -1;
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  NW_Bool imageType = NW_FALSE;
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  pos = NW_Asc_Strchr((char*)contentTypeString, '/');
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  if(pos != -1)
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    {
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    if( NW_Asc_strnicmp((char*)contentTypeString, (char*)HTTP_image_string, pos) == 0 )
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      {
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     imageType = NW_TRUE;
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      }
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    }
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  return imageType;
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  }
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/* ------------------------------------------------------------------------- *
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   class definition
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 * ------------------------------------------------------------------------- */
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/* ------------------------------------------------------------------------- */
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const
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NW_HED_MimeTable_Class_t NW_HED_MimeTable_Class = {
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  { /* NW_Object_Core            */
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    /* super                     */ &NW_Object_Core_Class,
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    /* queryInterface            */ _NW_Object_Core_QueryInterface
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  },
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  { /* NW_HED_MimeTable          */
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    /* numEntries                */ 0,
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    /* entries                   */ NULL,
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    /* createContentHandler	 */ _NW_HED_MimeTable_CreateContentHandler
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  }
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};
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/* ------------------------------------------------------------------------- *
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   virtual methods
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 * ------------------------------------------------------------------------- */
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/* ------------------------------------------------------------------------- */
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NW_HED_ContentHandler_t*
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_NW_HED_MimeTable_CreateContentHandler (const NW_HED_MimeTable_t* mimeTable,
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                                        NW_HED_DocumentNode_t* parent,
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                                        NW_Http_ContentTypeString_t contentTypeString,
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                                        NW_HED_UrlRequest_t* urlRequest,
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                                        NW_Url_Resp_t* response,
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                                        NW_Bool isTopLevel)
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  {
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  NW_ASSERT( mimeTable != NULL );
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  NW_ASSERT( parent != NULL );
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  NW_ASSERT( urlRequest != NULL );
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  NW_Uint32 numEntries;
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  NW_Uint16 index;
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  NW_Bool  respNoStore = NW_FALSE;
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  NW_HED_ContentHandler_t* contentHandler = NULL;
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  if (response)
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    {
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    respNoStore = response->noStore;
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    }
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  if( NW_HED_MimeTable_IsImageContentType( contentTypeString ) || 
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      ( urlRequest->loadType == NW_UrlRequest_Type_Image) ) 
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    {
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    if( !isTopLevel )
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      {
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      contentHandler = (NW_HED_ContentHandler_t*)
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          NW_Object_New ((NW_Object_Dynamic_Class_t*) &NW_ImageCH_Epoc32ContentHandler_Class, 
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          parent, urlRequest, respNoStore);
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      }
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    }
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  else
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    {
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    // Hotmail bug workaround: 
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    // Hotmail sends a response with content type text/vnd.wap.wml, but the response
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    // contains script and meta elements
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    TUint len = 6; // size of <html>
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    if (response != NULL && response->body != NULL && response->body->data != NULL && 
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        response->body->length > 6 && response->contentTypeString != NULL)
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    {
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      TPtrC8 wmlPtr((TUint8*)HTTP_text_vnd_wap_wml_string);
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      if (wmlPtr.CompareF(TPtrC8(response->contentTypeString)) == 0)
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      {
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        _LIT8(KhtmlTag, "<html>");
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        TPtr8 ptr(response->body->data, len, len);
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        if (ptr.CompareF(KhtmlTag()) == 0)
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        {
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          contentTypeString = (NW_Uint8*)HTTP_text_html_string;
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        }
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      }
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    }
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    // traverse the MimeTable entries one by one looking for a match for
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    // the supplied content type 
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    numEntries = NW_HED_MimeTable_GetClassPart (mimeTable).numEntries;
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    for( index = 0; index < numEntries; index++ ) 
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      {
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      const NW_HED_MimeTable_Entry_t* entry;
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      entry = &NW_HED_MimeTable_GetClassPart (mimeTable).entries[index];
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      if( ( NW_Asc_stricmp((char*)entry->contentTypeString, (char*)contentTypeString)) == 0	&& 
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		      (!isTopLevel || entry->acceptTopLevel)) 
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        {
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        contentHandler = (NW_HED_ContentHandler_t*)
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          NW_Object_New ((NW_Object_Dynamic_Class_t*) entry->objClass, parent, urlRequest, respNoStore);
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        break;
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        }
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      }
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    }
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  // if no match were found we return NULL 
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  return contentHandler;
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  }
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/* ------------------------------------------------------------------------- */
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NW_Bool
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NW_HED_MimeTable_IsSupportedContent(NW_HED_MimeTable_t* mimeTable, 
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                                   NW_Http_ContentTypeString_t contentTypeString,
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                                   NW_Bool isTopLevel)
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{
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  NW_Uint32 numEntries;
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  NW_Uint16 index;
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  /* traverse the MimeTable entries one by one looking for a match for
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     the supplied content type */
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  numEntries = NW_HED_MimeTable_GetClassPart (mimeTable).numEntries;
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  for (index = 0; index < numEntries; index++) {
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    const NW_HED_MimeTable_Entry_t* entry;
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    entry = &NW_HED_MimeTable_GetClassPart (mimeTable).entries[index];
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    if ((0 == NW_Asc_stricmp((char*)entry->contentTypeString, (char*)contentTypeString)) && 
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		(!isTopLevel || entry->acceptTopLevel)) {
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      return NW_TRUE;
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    }
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  }
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  /* if no match were found we return NULL */
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  return NW_FALSE;
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}
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   166