svx/source/xml/xmleohlp.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include <com/sun/star/io/XStream.hpp>
  22 #include <com/sun/star/beans/XPropertySet.hpp>
  23 #include <com/sun/star/embed/XTransactedObject.hpp>
  24 #include <com/sun/star/embed/ElementModes.hpp>
  25 #include <com/sun/star/embed/XEmbeddedObject.hpp>
  26 #include <com/sun/star/embed/XEmbedPersist.hpp>
  27 #include <com/sun/star/embed/EmbedStates.hpp>
  28 #include <com/sun/star/embed/Aspects.hpp>
  29 #include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
  30 #include <osl/diagnose.h>
  31 #include <sot/storage.hxx>
  32 #include <tools/debug.hxx>
  33 #include <sal/log.hxx>
  34 #include <unotools/streamwrap.hxx>
  35 #include <unotools/tempfile.hxx>
  36
  37 #include <svtools/embedhlp.hxx>
  38 #include <unotools/ucbstreamhelper.hxx>
  39 #include <comphelper/propertyvalue.hxx>
  40 #include <comphelper/storagehelper.hxx>
  41 #include <comphelper/embeddedobjectcontainer.hxx>
  42
  43 #include <comphelper/fileformat.h>
  44 #include <cppuhelper/exc_hlp.hxx>
  45 #include <cppuhelper/implbase.hxx>
  46 #include <svx/xmleohlp.hxx>
  47 #include <map>
  48 #include <memory>
  49 #include <mutex>
  50
  51 using namespace ::cppu;
  52 using namespace ::utl;
  53 using namespace ::com::sun::star;
  54 using namespace ::com::sun::star::document;
  55 using namespace ::com::sun::star::uno;
  56 using namespace ::com::sun::star::container;
  57 using namespace ::com::sun::star::io;
  58 using namespace ::com::sun::star::lang;
  59
  60 constexpr OUStringLiteral XML_CONTAINERSTORAGE_NAME_60 = u"Pictures";
  61 constexpr OUStringLiteral XML_CONTAINERSTORAGE_NAME = u"ObjectReplacements";
  62 constexpr OUString XML_EMBEDDEDOBJECT_URL_BASE = u"vnd.sun.star.EmbeddedObject:"_ustr;
  63 constexpr OUStringLiteral XML_EMBEDDEDOBJECTGRAPHIC_URL_BASE = u"vnd.sun.star.GraphicObject:";
  64
  65
  66 class OutputStorageWrapper_Impl : public ::cppu::WeakImplHelper<XOutputStream>
  67 {
  68     std::mutex    maMutex;
  69     rtl::Reference < OOutputStreamWrapper > xOut;
  70     TempFileFast aTempFile;
  71     bool bStreamClosed : 1;
  72     SvStream* pStream;
  73
  74 public:
  75     OutputStorageWrapper_Impl();
  76
  77 // css::io::XOutputStream
  78     virtual void SAL_CALL writeBytes(const Sequence< sal_Int8 >& aData) override;
  79     virtual void SAL_CALL flush() override;
  80     virtual void SAL_CALL closeOutput() override;
  81
  82     SvStream*   GetStream();
  83 };
  84
  85 OutputStorageWrapper_Impl::OutputStorageWrapper_Impl()
  86     : bStreamClosed( false )
  87     , pStream(nullptr)
  88 {
  89     pStream = aTempFile.GetStream( StreamMode::READWRITE );
  90     xOut = new OOutputStreamWrapper( *pStream );
  91 }
  92
  93 SvStream *OutputStorageWrapper_Impl::GetStream()
  94 {
  95     if( bStreamClosed )
  96         return pStream;
  97     return nullptr;
  98 }
  99
 100 void SAL_CALL OutputStorageWrapper_Impl::writeBytes(
 101         const Sequence< sal_Int8 >& aData)
 102 {
 103     std::scoped_lock          aGuard( maMutex );
 104     xOut->writeBytes( aData );
 105 }
 106
 107 void SAL_CALL OutputStorageWrapper_Impl::flush()
 108 {
 109     std::scoped_lock          aGuard( maMutex );
 110     xOut->flush();
 111 }
 112
 113 void SAL_CALL OutputStorageWrapper_Impl::closeOutput()
 114 {
 115     std::scoped_lock          aGuard( maMutex );
 116     xOut->closeOutput();
 117     bStreamClosed = true;
 118 }
 119
 120 SvXMLEmbeddedObjectHelper::SvXMLEmbeddedObjectHelper() :
 121     mpDocPersist( nullptr ),
 122     meCreateMode( SvXMLEmbeddedObjectHelperMode::Read )
 123 {
 124 }
 125
 126 SvXMLEmbeddedObjectHelper::SvXMLEmbeddedObjectHelper( ::comphelper::IEmbeddedHelper& rDocPersist, SvXMLEmbeddedObjectHelperMode eCreateMode ) :
 127     mpDocPersist( nullptr ),
 128     meCreateMode( SvXMLEmbeddedObjectHelperMode::Read )
 129 {
 130     Init( nullptr, rDocPersist, eCreateMode );
 131 }
 132
 133 SvXMLEmbeddedObjectHelper::~SvXMLEmbeddedObjectHelper()
 134 {
 135 }
 136
 137 void SvXMLEmbeddedObjectHelper::disposing(std::unique_lock<std::mutex>&)
 138 {
 139     if( mxTempStorage.is() )
 140     {
 141         mxTempStorage->dispose();
 142         mxTempStorage.clear();
 143     }
 144 }
 145
 146 void SvXMLEmbeddedObjectHelper::splitObjectURL(const OUString& _aURLNoPar,
 147     OUString& rContainerStorageName,
 148     OUString& rObjectStorageName)
 149 {
 150     DBG_ASSERT(_aURLNoPar.isEmpty() || '#' != _aURLNoPar[0], "invalid object URL" );
 151     OUString aURLNoPar = _aURLNoPar;
 152
 153     sal_Int32 _nPos = aURLNoPar.lastIndexOf( '/' );
 154     if( -1 == _nPos )
 155     {
 156         rContainerStorageName.clear();
 157         rObjectStorageName = aURLNoPar;
 158     }
 159     else
 160     {
 161         //eliminate 'superfluous' slashes at start and end
 162         //#i103076# load objects with all allowed xlink:href syntaxes
 163         {
 164             //eliminate './' at start
 165             sal_Int32 nStart = 0;
 166             sal_Int32 nCount = aURLNoPar.getLength();
 167             if( aURLNoPar.startsWith( "./" ) )
 168             {
 169                 nStart = 2;
 170                 nCount -= 2;
 171             }
 172
 173             //eliminate '/' at end
 174             sal_Int32 nEnd = aURLNoPar.lastIndexOf( '/' );
 175             if( nEnd == aURLNoPar.getLength()-1 && nEnd != (nStart-1) )
 176                 nCount--;
 177
 178             aURLNoPar = aURLNoPar.copy( nStart, nCount );
 179         }
 180
 181         _nPos = aURLNoPar.lastIndexOf( '/' );
 182         if( _nPos >= 0 )
 183             rContainerStorageName = aURLNoPar.copy( 0, _nPos );
 184         rObjectStorageName = aURLNoPar.copy( _nPos+1 );
 185     }
 186 }
 187
 188 bool SvXMLEmbeddedObjectHelper::ImplGetStorageNames(
 189         const OUString& rURLStr,
 190         OUString& rContainerStorageName,
 191         OUString& rObjectStorageName,
 192         bool bInternalToExternal,
 193         bool *pGraphicRepl,
 194         bool *pOasisFormat ) const
 195 {
 196     // internal URL: vnd.sun.star.EmbeddedObject:<object-name>
 197     //           or: vnd.sun.star.EmbeddedObject:<path>/<object-name>
 198     // internal replacement images:
 199     //               vnd.sun.star.EmbeddedObjectGraphic:<object-name>
 200     //           or: vnd.sun.star.EmbeddedObjectGraphic:<path>/<object-name>
 201     // external URL: ./<path>/<object-name>
 202     //           or: <path>/<object-name>
 203     //           or: <object-name>
 204     // currently, path may only consist of a single directory name
 205     // it is also possible to have additional arguments at the end of URL: <main URL>[?<name>=<value>[,<name>=<value>]*]
 206
 207     if( pGraphicRepl )
 208         *pGraphicRepl = false;
 209
 210     if( pOasisFormat )
 211         *pOasisFormat = true; // the default value
 212
 213     if( rURLStr.isEmpty() )
 214         return false;
 215
 216     // get rid of arguments
 217     sal_Int32 nPos = rURLStr.indexOf( '?' );
 218     OUString aURLNoPar;
 219     if ( nPos == -1 )
 220         aURLNoPar = rURLStr;
 221     else
 222     {
 223         aURLNoPar = rURLStr.copy( 0, nPos );
 224
 225         // check the arguments
 226         nPos++;
 227         while( nPos >= 0 && nPos < rURLStr.getLength() )
 228         {
 229             OUString aToken = rURLStr.getToken( 0, ',', nPos );
 230             if ( aToken.equalsIgnoreAsciiCase( "oasis=false" ) )
 231             {
 232                 if ( pOasisFormat )
 233                     *pOasisFormat = false;
 234                 break;
 235             }
 236             else
 237             {
 238                 SAL_WARN( "svx", "invalid arguments was found in URL!" );
 239             }
 240         }
 241     }
 242
 243     if( bInternalToExternal )
 244     {
 245         nPos = aURLNoPar.indexOf( ':' );
 246         if( -1 == nPos )
 247             return false;
 248         bool bObjUrl = aURLNoPar.startsWith( XML_EMBEDDEDOBJECT_URL_BASE );
 249         bool bGrUrl = !bObjUrl &&
 250               aURLNoPar.startsWith( XML_EMBEDDEDOBJECTGRAPHIC_URL_BASE );
 251         if( !(bObjUrl || bGrUrl) )
 252             return false;
 253
 254         sal_Int32 nPathStart = nPos + 1;
 255         nPos = aURLNoPar.lastIndexOf( '/' );
 256         if( -1 == nPos )
 257         {
 258             rContainerStorageName.clear();
 259             rObjectStorageName = aURLNoPar.copy( nPathStart );
 260         }
 261         else if( nPos > nPathStart )
 262         {
 263             rContainerStorageName = aURLNoPar.copy( nPathStart, nPos-nPathStart);
 264             rObjectStorageName = aURLNoPar.copy( nPos+1 );
 265         }
 266         else
 267             return false;
 268
 269         if( bGrUrl )
 270         {
 271             bool bOASIS = mxRootStorage.is() &&
 272                 ( SotStorage::GetVersion( mxRootStorage ) > SOFFICE_FILEFORMAT_60 );
 273             if (bOASIS)
 274                 rContainerStorageName = XML_CONTAINERSTORAGE_NAME;
 275             else
 276                 rContainerStorageName = XML_CONTAINERSTORAGE_NAME_60;
 277
 278             if( pGraphicRepl )
 279                 *pGraphicRepl = true;
 280         }
 281
 282
 283     }
 284     else
 285     {
 286         splitObjectURL(aURLNoPar, rContainerStorageName, rObjectStorageName);
 287     }
 288
 289     if( -1 != rContainerStorageName.indexOf( '/' ) )
 290     {
 291         OSL_FAIL( "SvXMLEmbeddedObjectHelper: invalid path name" );
 292         return false;
 293     }
 294
 295     return true;
 296 }
 297
 298 uno::Reference < embed::XStorage > const & SvXMLEmbeddedObjectHelper::ImplGetContainerStorage(
 299         const OUString& rStorageName )
 300 {
 301     DBG_ASSERT( -1 == rStorageName.indexOf( '/' ) &&
 302                 -1 == rStorageName.indexOf( '\\' ),
 303                 "nested embedded storages aren't supported" );
 304     if( !mxContainerStorage.is() ||
 305         ( rStorageName != maCurContainerStorageName ) )
 306     {
 307         if( mxContainerStorage.is() &&
 308             !maCurContainerStorageName.isEmpty() &&
 309             SvXMLEmbeddedObjectHelperMode::Write == meCreateMode )
 310         {
 311             uno::Reference < embed::XTransactedObject > xTrans( mxContainerStorage, uno::UNO_QUERY );
 312             if ( xTrans.is() )
 313                 xTrans->commit();
 314         }
 315
 316         if( !rStorageName.isEmpty() && mxRootStorage.is() )
 317         {
 318             sal_Int32 nMode = SvXMLEmbeddedObjectHelperMode::Write == meCreateMode
 319                                     ? ::embed::ElementModes::READWRITE
 320                                     : ::embed::ElementModes::READ;
 321             mxContainerStorage = mxRootStorage->openStorageElement( rStorageName,
 322                                                              nMode );
 323         }
 324         else
 325         {
 326             mxContainerStorage = mxRootStorage;
 327         }
 328         maCurContainerStorageName = rStorageName;
 329     }
 330
 331     return mxContainerStorage;
 332 }
 333
 334 void SvXMLEmbeddedObjectHelper::ImplReadObject(
 335         const OUString& rContainerStorageName,
 336         OUString& rObjName,
 337         const SvGlobalName *, // pClassId, see "TODO/LATER" below
 338         SvStream* pTemp )
 339 {
 340     uno::Reference < embed::XStorage > xDocStor( mpDocPersist->getStorage() );
 341     uno::Reference < embed::XStorage > xCntnrStor( ImplGetContainerStorage( rContainerStorageName ) );
 342
 343     if( !xCntnrStor.is() && !pTemp )
 344         return;
 345
 346     OUString aSrcObjName( rObjName );
 347     comphelper::EmbeddedObjectContainer& rContainer = mpDocPersist->getEmbeddedObjectContainer();
 348
 349     // Is the object name unique?
 350     // if the object is already instantiated by GetEmbeddedObject
 351     // that means that the duplication is being loaded
 352     bool bDuplicate = rContainer.HasInstantiatedEmbeddedObject( rObjName );
 353     DBG_ASSERT( !bDuplicate, "An object in the document is referenced twice!" );
 354
 355     if( xDocStor != xCntnrStor || pTemp || bDuplicate )
 356     {
 357         // TODO/LATER: make this altogether a method in the EmbeddedObjectContainer
 358
 359         // create a unique name for the duplicate object
 360         if( bDuplicate )
 361             rObjName = rContainer.CreateUniqueObjectName();
 362
 363         if( pTemp )
 364         {
 365             try
 366             {
 367                 pTemp->Seek( 0 );
 368                 uno::Reference < io::XStream > xStm = xDocStor->openStreamElement( rObjName,
 369                         embed::ElementModes::READWRITE | embed::ElementModes::TRUNCATE );
 370                 std::unique_ptr<SvStream> pStream(::utl::UcbStreamHelper::CreateStream( xStm ));
 371                 pTemp->ReadStream( *pStream );
 372                 pStream.reset();
 373
 374                 // TODO/LATER: what to do when other types of objects are based on substream persistence?
 375                 // This is an ole object
 376                 uno::Reference< beans::XPropertySet > xProps( xStm, uno::UNO_QUERY );
 377                 if (xProps)
 378                 {
 379                     xProps->setPropertyValue(
 380                         u"MediaType"_ustr,
 381                         uno::Any( u"application/vnd.sun.star.oleobject"_ustr ) );
 382
 383
 384                     xStm->getOutputStream()->closeOutput();
 385                 }
 386             }
 387             catch ( uno::Exception& )
 388             {
 389                 return;
 390             }
 391         }
 392         else
 393         {
 394             try
 395             {
 396                 xCntnrStor->copyElementTo( aSrcObjName, xDocStor, rObjName );
 397             }
 398             catch ( uno::Exception& )
 399             {
 400                 return;
 401             }
 402         }
 403     }
 404
 405     // make object known to the container
 406     // TODO/LATER: could be done a little bit more efficient!
 407     OUString aName( rObjName );
 408
 409     // TODO/LATER: The provided pClassId is ignored for now.
 410     //             The stream contains OLE storage internally and this storage already has a class id specifying the
 411     //             server that was used to create the object. pClassId could be used to specify the server that should
 412     //             be used for the next opening, but this information seems to be out of the file format responsibility
 413     //             area.
 414     OUString const baseURL(mpDocPersist->getDocumentBaseURL());
 415     rContainer.GetEmbeddedObject(aName, &baseURL);
 416 }
 417
 418 OUString SvXMLEmbeddedObjectHelper::ImplInsertEmbeddedObjectURL(
 419         const OUString& rURLStr )
 420 {
 421     OUString sRetURL;
 422
 423     OUString aContainerStorageName, aObjectStorageName;
 424     if( !ImplGetStorageNames( rURLStr, aContainerStorageName,
 425                               aObjectStorageName,
 426                               SvXMLEmbeddedObjectHelperMode::Write == meCreateMode ) )
 427         return sRetURL;
 428
 429     if( SvXMLEmbeddedObjectHelperMode::Read == meCreateMode )
 430     {
 431         OutputStorageWrapper_Impl *pOut = nullptr;
 432         std::map< OUString, rtl::Reference<OutputStorageWrapper_Impl> >::iterator aIter;
 433
 434         if( mxStreamMap )
 435         {
 436             aIter = mxStreamMap->find( rURLStr );
 437             if( aIter != mxStreamMap->end() && aIter->second.is() )
 438                 pOut = aIter->second.get();
 439         }
 440
 441         SvGlobalName aClassId, *pClassId = nullptr;
 442         sal_Int32 nPos = aObjectStorageName.lastIndexOf( '!' );
 443         if( -1 != nPos && aClassId.MakeId( aObjectStorageName.subView( nPos+1 ) ) )
 444         {
 445             aObjectStorageName = aObjectStorageName.copy( 0, nPos );
 446             pClassId = &aClassId;
 447         }
 448
 449         ImplReadObject( aContainerStorageName, aObjectStorageName, pClassId, pOut ? pOut->GetStream() : nullptr );
 450         sRetURL = XML_EMBEDDEDOBJECT_URL_BASE + aObjectStorageName;
 451
 452         if( pOut )
 453         {
 454             mxStreamMap->erase( aIter );
 455         }
 456     }
 457     else
 458     {
 459         // Objects are written using ::comphelper::IEmbeddedHelper::SaveAs
 460         sRetURL = "./";
 461         if( !aContainerStorageName.isEmpty() )
 462         {
 463             sRetURL += aContainerStorageName + "/";
 464         }
 465         sRetURL += aObjectStorageName;
 466     }
 467
 468     return sRetURL;
 469 }
 470
 471 uno::Reference< io::XInputStream > SvXMLEmbeddedObjectHelper::ImplGetReplacementImage(
 472                                             const uno::Reference< embed::XEmbeddedObject >& xObj )
 473 {
 474     uno::Reference< io::XInputStream > xStream;
 475
 476     if( xObj.is() )
 477     {
 478         try
 479         {
 480             bool bSwitchBackToLoaded = false;
 481             sal_Int32 nCurState = xObj->getCurrentState();
 482             if ( nCurState == embed::EmbedStates::LOADED || nCurState == embed::EmbedStates::RUNNING )
 483             {
 484                 // means that the object is not active
 485                 // copy replacement image from old to new container
 486                 OUString aMediaType;
 487                 xStream = mpDocPersist->getEmbeddedObjectContainer().GetGraphicStream( xObj, &aMediaType );
 488             }
 489
 490             if ( !xStream.is() )
 491             {
 492                 // the image must be regenerated
 493                 // TODO/LATER: another aspect could be used
 494                 if ( nCurState == embed::EmbedStates::LOADED )
 495                     bSwitchBackToLoaded = true;
 496
 497                 OUString aMediaType;
 498                 xStream = svt::EmbeddedObjectRef::GetGraphicReplacementStream(
 499                                                     embed::Aspects::MSOLE_CONTENT,
 500                                                     xObj,
 501                                                     &aMediaType );
 502             }
 503
 504             if ( bSwitchBackToLoaded )
 505                 // switch back to loaded state; that way we have a minimum cache confusion
 506                 xObj->changeState( embed::EmbedStates::LOADED );
 507         }
 508         catch( uno::Exception& )
 509         {}
 510     }
 511
 512     return xStream;
 513 }
 514
 515 void SvXMLEmbeddedObjectHelper::Init(
 516         const uno::Reference < embed::XStorage >& rRootStorage,
 517         ::comphelper::IEmbeddedHelper& rPersist,
 518         SvXMLEmbeddedObjectHelperMode eCreateMode )
 519 {
 520     mxRootStorage = rRootStorage;
 521     mpDocPersist = &rPersist;
 522     meCreateMode = eCreateMode;
 523 }
 524
 525 rtl::Reference<SvXMLEmbeddedObjectHelper> SvXMLEmbeddedObjectHelper::Create(
 526         const uno::Reference < embed::XStorage >& rRootStorage,
 527         ::comphelper::IEmbeddedHelper& rDocPersist,
 528         SvXMLEmbeddedObjectHelperMode eCreateMode )
 529 {
 530     rtl::Reference<SvXMLEmbeddedObjectHelper> pThis(new SvXMLEmbeddedObjectHelper);
 531
 532     pThis->Init( rRootStorage, rDocPersist, eCreateMode );
 533
 534     return pThis;
 535 }
 536
 537 rtl::Reference<SvXMLEmbeddedObjectHelper> SvXMLEmbeddedObjectHelper::Create(
 538         ::comphelper::IEmbeddedHelper& rDocPersist,
 539         SvXMLEmbeddedObjectHelperMode eCreateMode )
 540 {
 541     rtl::Reference<SvXMLEmbeddedObjectHelper> pThis(new SvXMLEmbeddedObjectHelper);
 542
 543     pThis->Init( nullptr, rDocPersist, eCreateMode );
 544
 545     return pThis;
 546 }
 547
 548 OUString SAL_CALL SvXMLEmbeddedObjectHelper::resolveEmbeddedObjectURL(const OUString& rURL)
 549 {
 550     std::unique_lock          aGuard( m_aMutex );
 551
 552     OUString sRet;
 553     try
 554     {
 555         sRet = ImplInsertEmbeddedObjectURL(rURL);
 556     }
 557     catch (const RuntimeException&)
 558     {
 559         throw;
 560     }
 561     catch (const Exception&)
 562     {
 563         css::uno::Any anyEx = cppu::getCaughtException();
 564         throw WrappedTargetRuntimeException(
 565             u"SvXMLEmbeddedObjectHelper::resolveEmbeddedObjectURL non-RuntimeException"_ustr,
 566             getXWeak(), anyEx);
 567     }
 568     return sRet;
 569 }
 570
 571 // XNameAccess: alien objects!
 572 Any SAL_CALL SvXMLEmbeddedObjectHelper::getByName(
 573         const OUString& rURLStr )
 574 {
 575     std::unique_lock          aGuard( m_aMutex );
 576     Any aRet;
 577     if( SvXMLEmbeddedObjectHelperMode::Read == meCreateMode )
 578     {
 579         Reference < XOutputStream > xStrm;
 580         if( mxStreamMap )
 581         {
 582             auto aIter = mxStreamMap->find( rURLStr );
 583             if( aIter != mxStreamMap->end() && aIter->second.is() )
 584                 xStrm = aIter->second.get();
 585         }
 586         if( !xStrm.is() )
 587         {
 588             rtl::Reference<OutputStorageWrapper_Impl> xOut = new OutputStorageWrapper_Impl;
 589             if( !mxStreamMap )
 590                 mxStreamMap.emplace();
 591             (*mxStreamMap)[rURLStr] = xOut;
 592             xStrm = xOut.get();
 593         }
 594
 595         aRet <<= xStrm;
 596     }
 597     else
 598     {
 599         bool bGraphicRepl = false;
 600         bool bOasisFormat = true;
 601         Reference < XInputStream > xStrm;
 602         OUString aContainerStorageName, aObjectStorageName;
 603         if( ImplGetStorageNames( rURLStr, aContainerStorageName,
 604                                  aObjectStorageName,
 605                                  true,
 606                                  &bGraphicRepl,
 607                                  &bOasisFormat ) )
 608         {
 609             try
 610             {
 611                 comphelper::EmbeddedObjectContainer& rContainer =
 612                         mpDocPersist->getEmbeddedObjectContainer();
 613
 614                 Reference < embed::XEmbeddedObject > xObj = rContainer.GetEmbeddedObject( aObjectStorageName );
 615                 DBG_ASSERT( xObj.is(), "Didn't get object" );
 616
 617                 if( xObj.is() )
 618                 {
 619                     if( bGraphicRepl )
 620                     {
 621                         xStrm = ImplGetReplacementImage( xObj );
 622                     }
 623                     else
 624                     {
 625                         Reference < embed::XEmbedPersist > xPersist( xObj, UNO_QUERY );
 626                         if( xPersist.is() )
 627                         {
 628                             if( !mxTempStorage.is() )
 629                                 mxTempStorage =
 630                                     comphelper::OStorageHelper::GetTemporaryStorage();
 631                             Sequence < beans::PropertyValue > aDummy,
 632                                 aEmbDescr{ comphelper::makePropertyValue(u"StoreVisualReplacement"_ustr,
 633                                                                          !bOasisFormat) };
 634                             if ( !bOasisFormat )
 635                             {
 636                                 uno::Reference< io::XInputStream > xGrInStream = ImplGetReplacementImage( xObj );
 637                                 if ( xGrInStream.is() )
 638                                 {
 639                                     aEmbDescr.realloc( 2 );
 640                                     auto pEmbDescr = aEmbDescr.getArray();
 641                                     pEmbDescr[1].Name = "VisualReplacement";
 642                                     pEmbDescr[1].Value <<= xGrInStream;
 643                                 }
 644                             }
 645
 646                             xPersist->storeToEntry( mxTempStorage, aObjectStorageName,
 647                                                     aDummy, aEmbDescr );
 648                             Reference < io::XStream > xStream =
 649                                 mxTempStorage->openStreamElement(
 650                                                         aObjectStorageName,
 651                                                         embed::ElementModes::READ);
 652                             if( xStream.is() )
 653                                 xStrm = xStream->getInputStream();
 654                         }
 655                     }
 656                 }
 657             }
 658             catch ( uno::Exception& )
 659             {
 660             }
 661         }
 662
 663         aRet <<= xStrm;
 664     }
 665
 666     return aRet;
 667 }
 668
 669 Sequence< OUString > SAL_CALL SvXMLEmbeddedObjectHelper::getElementNames()
 670 {
 671    return {};
 672 }
 673
 674 sal_Bool SAL_CALL SvXMLEmbeddedObjectHelper::hasByName( const OUString& rURLStr )
 675 {
 676     std::unique_lock          aGuard( m_aMutex );
 677     if( SvXMLEmbeddedObjectHelperMode::Read == meCreateMode )
 678     {
 679         return true;
 680     }
 681     else
 682     {
 683         OUString aContainerStorageName, aObjectStorageName;
 684         if( !ImplGetStorageNames( rURLStr, aContainerStorageName,
 685                                   aObjectStorageName,
 686                                   true ) )
 687             return false;
 688
 689         comphelper::EmbeddedObjectContainer& rContainer = mpDocPersist->getEmbeddedObjectContainer();
 690         return !aObjectStorageName.isEmpty() &&
 691                rContainer.HasEmbeddedObject( aObjectStorageName );
 692     }
 693 }
 694
 695 // XNameAccess
 696 Type SAL_CALL SvXMLEmbeddedObjectHelper::getElementType()
 697 {
 698     std::unique_lock          aGuard( m_aMutex );
 699     if( SvXMLEmbeddedObjectHelperMode::Read == meCreateMode )
 700         return cppu::UnoType<XOutputStream>::get();
 701     else
 702         return cppu::UnoType<XInputStream>::get();
 703 }
 704
 705 sal_Bool SAL_CALL SvXMLEmbeddedObjectHelper::hasElements()
 706 {
 707     std::unique_lock          aGuard( m_aMutex );
 708     if( SvXMLEmbeddedObjectHelperMode::Read == meCreateMode )
 709     {
 710         return true;
 711     }
 712     else
 713     {
 714         comphelper::EmbeddedObjectContainer& rContainer = mpDocPersist->getEmbeddedObjectContainer();
 715         return rContainer.HasEmbeddedObjects();
 716     }
 717 }
 718
 719 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */