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-rw-r--r--unotools/source/ucbhelper/ucbstreamhelper.cxx237
1 files changed, 237 insertions, 0 deletions
diff --git a/unotools/source/ucbhelper/ucbstreamhelper.cxx b/unotools/source/ucbhelper/ucbstreamhelper.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <rtl/ustring.hxx>
+#include <unotools/ucbstreamhelper.hxx>
+#include <comphelper/processfactory.hxx>
+#include <com/sun/star/task/InteractionHandler.hpp>
+#include <com/sun/star/ucb/ContentCreationException.hpp>
+#include <com/sun/star/ucb/CommandAbortedException.hpp>
+#include <com/sun/star/ucb/InsertCommandArgument.hpp>
+#include <com/sun/star/beans/PropertyValue.hpp>
+
+#include <comphelper/simplefileaccessinteraction.hxx>
+#include <ucbhelper/content.hxx>
+#include <unotools/streamwrap.hxx>
+#include "ucblockbytes.hxx"
+
+namespace com::sun::star::ucb { class XCommandEnvironment; }
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::io;
+using namespace ::com::sun::star::ucb;
+using namespace ::com::sun::star::task;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::beans;
+
+namespace utl
+{
+
+static std::unique_ptr<SvStream> lcl_CreateStream( const OUString& rFileName, StreamMode eOpenMode,
+ const Reference < XInteractionHandler >& xInteractionHandler,
+ bool bEnsureFileExists )
+{
+ std::unique_ptr<SvStream> pStream;
+ UcbLockBytesRef xLockBytes;
+ if ( eOpenMode & StreamMode::WRITE )
+ {
+ bool bTruncate = bool( eOpenMode & StreamMode::TRUNC );
+ if ( bTruncate )
+ {
+ try
+ {
+ // truncate is implemented with deleting the original file
+ ::ucbhelper::Content aCnt(
+ rFileName, Reference < XCommandEnvironment >(),
+ comphelper::getProcessComponentContext() );
+ aCnt.executeCommand( "delete", css::uno::Any( true ) );
+ }
+
+ catch ( const CommandAbortedException& )
+ {
+ // couldn't truncate/delete
+ }
+ catch ( const ContentCreationException& )
+ {
+ }
+ catch ( const Exception& )
+ {
+ }
+ }
+
+ if ( bEnsureFileExists || bTruncate )
+ {
+ try
+ {
+ // make sure that the desired file exists before trying to open
+ SvMemoryStream aStream(0,0);
+ rtl::Reference<::utl::OInputStreamWrapper> xInput = new ::utl::OInputStreamWrapper( aStream );
+
+ ::ucbhelper::Content aContent(
+ rFileName, Reference < XCommandEnvironment >(),
+ comphelper::getProcessComponentContext() );
+ InsertCommandArgument aInsertArg;
+ aInsertArg.Data = xInput;
+
+ aInsertArg.ReplaceExisting = false;
+ Any aCmdArg;
+ aCmdArg <<= aInsertArg;
+ aContent.executeCommand( "insert", aCmdArg );
+ }
+
+ // it is NOT an error when the stream already exists and no truncation was desired
+ catch ( const CommandAbortedException& )
+ {
+ // currently never an error is detected !
+ }
+ catch ( const ContentCreationException& )
+ {
+ }
+ catch ( const Exception& )
+ {
+ }
+ }
+ }
+
+ try
+ {
+ // create LockBytes using UCB
+ ::ucbhelper::Content aContent(
+ rFileName, Reference < XCommandEnvironment >(),
+ comphelper::getProcessComponentContext() );
+ xLockBytes = UcbLockBytes::CreateLockBytes( aContent.get(), Sequence < PropertyValue >(),
+ eOpenMode, xInteractionHandler );
+ if ( xLockBytes.is() )
+ {
+ pStream.reset( new SvStream( xLockBytes.get() ) );
+ pStream->SetBufferSize( 4096 );
+ pStream->SetError( xLockBytes->GetError() );
+ }
+ }
+ catch ( const CommandAbortedException& )
+ {
+ }
+ catch ( const ContentCreationException& )
+ {
+ }
+ catch ( const Exception& )
+ {
+ }
+
+ return pStream;
+}
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream(const OUString& rFileName, StreamMode eOpenMode, css::uno::Reference<css::awt::XWindow> xParentWin)
+{
+ // related tdf#99312
+ // create a specialized interaction handler to manages Web certificates and Web credentials when needed
+ Reference< XInteractionHandler > xIH(
+ css::task::InteractionHandler::createWithParent(comphelper::getProcessComponentContext(), xParentWin));
+ Reference<XInteractionHandler> xIHScoped(new comphelper::SimpleFileAccessInteraction(xIH));
+
+ return lcl_CreateStream( rFileName, eOpenMode, xIHScoped, true /* bEnsureFileExists */ );
+}
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream(const OUString& rFileName, StreamMode eOpenMode,
+ bool bFileExists, css::uno::Reference<css::awt::XWindow> xParentWin)
+{
+ // related tdf#99312
+ // create a specialized interaction handler to manages Web certificates and Web credentials when needed
+ Reference< XInteractionHandler > xIH(
+ css::task::InteractionHandler::createWithParent(comphelper::getProcessComponentContext(), xParentWin));
+ Reference<XInteractionHandler> xIHScoped(new comphelper::SimpleFileAccessInteraction(xIH));
+ return lcl_CreateStream( rFileName, eOpenMode, xIHScoped,!bFileExists );
+}
+
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream( const Reference < XInputStream >& xStream )
+{
+ std::unique_ptr<SvStream> pStream;
+ UcbLockBytesRef xLockBytes = UcbLockBytes::CreateInputLockBytes( xStream );
+ if ( xLockBytes.is() )
+ {
+ pStream.reset( new SvStream( xLockBytes.get() ) );
+ pStream->SetBufferSize( 4096 );
+ pStream->SetError( xLockBytes->GetError() );
+ }
+
+ return pStream;
+}
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream( const Reference < XStream >& xStream )
+{
+ std::unique_ptr<SvStream> pStream;
+ if ( xStream->getOutputStream().is() )
+ {
+ UcbLockBytesRef xLockBytes = UcbLockBytes::CreateLockBytes( xStream );
+ if ( xLockBytes.is() )
+ {
+ pStream.reset( new SvStream( xLockBytes.get() ) );
+ pStream->SetBufferSize( 4096 );
+ pStream->SetError( xLockBytes->GetError() );
+ }
+ }
+ else
+ return CreateStream( xStream->getInputStream() );
+
+ return pStream;
+}
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream( const Reference < XInputStream >& xStream, bool bCloseStream )
+{
+ std::unique_ptr<SvStream> pStream;
+ UcbLockBytesRef xLockBytes = UcbLockBytes::CreateInputLockBytes( xStream );
+ if ( xLockBytes.is() )
+ {
+ if ( !bCloseStream )
+ xLockBytes->setDontClose();
+
+ pStream.reset( new SvStream( xLockBytes.get() ) );
+ pStream->SetBufferSize( 4096 );
+ pStream->SetError( xLockBytes->GetError() );
+ }
+
+ return pStream;
+};
+
+std::unique_ptr<SvStream> UcbStreamHelper::CreateStream( const Reference < XStream >& xStream, bool bCloseStream )
+{
+ std::unique_ptr<SvStream> pStream;
+ if ( xStream->getOutputStream().is() )
+ {
+ UcbLockBytesRef xLockBytes = UcbLockBytes::CreateLockBytes( xStream );
+ if ( xLockBytes.is() )
+ {
+ if ( !bCloseStream )
+ xLockBytes->setDontClose();
+
+ pStream.reset( new SvStream( xLockBytes.get() ) );
+ pStream->SetBufferSize( 4096 );
+ pStream->SetError( xLockBytes->GetError() );
+ }
+ }
+ else
+ return CreateStream( xStream->getInputStream(), bCloseStream );
+
+ return pStream;
+};
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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