Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 180 insertions, 0 deletions

diff --git a/sot/source/sdstor/stgole.cxx b/sot/source/sdstor/stgole.cxx
new file mode 100644
index 000000000..ac23f7a14
--- /dev/null
+++ b/sot/source/sdstor/stgole.cxx
@@ -0,0 +1,180 @@
+/* -*- 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 <memory>
+#include <algorithm>
+
+#include "stgelem.hxx"
+#include "stgole.hxx"
+#include <o3tl/safeint.hxx>
+#include <sot/storinfo.hxx>
+
+///////////////////////// class StgInternalStream
+
+StgInternalStream::StgInternalStream( BaseStorage& rStg, const OUString& rName, bool bWr )
+{
+    m_isWritable = true;
+    StreamMode nMode = bWr
+                 ? StreamMode::WRITE | StreamMode::SHARE_DENYALL
+                 : StreamMode::READ | StreamMode::SHARE_DENYWRITE | StreamMode::NOCREATE;
+    m_pStrm.reset( rStg.OpenStream( rName, nMode ) );
+
+    // set the error code right here in the stream
+    SetError( rStg.GetError() );
+    SetBufferSize( 1024 );
+}
+
+StgInternalStream::~StgInternalStream()
+{
+}
+
+std::size_t StgInternalStream::GetData(void* pData, std::size_t nSize)
+{
+    if( m_pStrm )
+    {
+        nSize = m_pStrm->Read( pData, nSize );
+        SetError( m_pStrm->GetError() );
+        return nSize;
+    }
+    else
+        return 0;
+}
+
+std::size_t StgInternalStream::PutData(const void* pData, std::size_t nSize)
+{
+    if( m_pStrm )
+    {
+        nSize = m_pStrm->Write( pData, nSize );
+        SetError( m_pStrm->GetError() );
+        return nSize;
+    }
+    else
+        return 0;
+}
+
+sal_uInt64 StgInternalStream::SeekPos(sal_uInt64 const nPos)
+{
+    return m_pStrm ? m_pStrm->Seek( nPos ) : 0;
+}
+
+void StgInternalStream::FlushData()
+{
+    if( m_pStrm )
+    {
+        m_pStrm->Flush();
+        SetError( m_pStrm->GetError() );
+    }
+}
+
+void StgInternalStream::Commit()
+{
+    Flush();
+    m_pStrm->Commit();
+}
+
+///////////////////////// class StgCompObjStream
+
+StgCompObjStream::StgCompObjStream( BaseStorage& rStg, bool bWr )
+    : StgInternalStream( rStg, "\1CompObj", bWr )
+{
+}
+
+bool StgCompObjStream::Load()
+{
+    memset( &m_aClsId, 0, sizeof( ClsId ) );
+    m_nCbFormat = SotClipboardFormatId::NONE;
+    m_aUserName.clear();
+    if( GetError() != ERRCODE_NONE )
+        return false;
+    Seek( 8 );     // skip the first part
+    sal_Int32 nMarker = 0;
+    ReadInt32( nMarker );
+    if( nMarker == -1 )
+    {
+        ReadClsId( *this, m_aClsId );
+        sal_Int32 nLen1 = 0;
+        ReadInt32( nLen1 );
+        if ( nLen1 > 0 )
+        {
+            // higher bits are ignored
+            sal_Int32 nStrLen = ::std::min( nLen1, sal_Int32(0xFFFE) );
+
+            std::unique_ptr<char[]> p(new char[ nStrLen+1 ]);
+            p[nStrLen] = 0;
+            if (ReadBytes( p.get(), nStrLen ) == o3tl::make_unsigned(nStrLen))
+            {
+                //The encoding here is "ANSI", which is pretty useless seeing as
+                //the actual codepage used doesn't seem to be specified/stored
+                //anywhere :-(. Might as well pick 1252 and be consistent on
+                //all platforms and envs
+                //https://bz.apache.org/ooo/attachment.cgi?id=68668
+                //for a good edge-case example
+                m_aUserName = OUString(p.get(), nStrLen, RTL_TEXTENCODING_MS_1252);
+                m_nCbFormat = ReadClipboardFormat( *this );
+            }
+            else
+                SetError( SVSTREAM_GENERALERROR );
+        }
+    }
+    return GetError() == ERRCODE_NONE;
+}
+
+bool StgCompObjStream::Store()
+{
+    if( GetError() != ERRCODE_NONE )
+        return false;
+    Seek( 0 );
+    OString aAsciiUserName(OUStringToOString(m_aUserName, RTL_TEXTENCODING_MS_1252));
+    WriteInt16( 1 );          // Version?
+    WriteInt16( -2 );                     // 0xFFFE = Byte Order Indicator
+    WriteInt32( 0x0A03 );         // Windows 3.10
+    WriteInt32( -1 );
+    WriteClsId( *this, m_aClsId );             // Class ID
+    WriteInt32( aAsciiUserName.getLength() + 1 );
+    WriteOString( aAsciiUserName );
+    WriteUChar( 0 );             // string terminator
+    WriteClipboardFormat( *this, m_nCbFormat );
+    WriteInt32( 0 );             // terminator
+    Commit();
+    return GetError() == ERRCODE_NONE;
+}
+
+/////////////////////////// class StgOleStream
+
+StgOleStream::StgOleStream( BaseStorage& rStg )
+    : StgInternalStream( rStg, "\1Ole", true )
+{
+}
+
+bool StgOleStream::Store()
+{
+    if( GetError() != ERRCODE_NONE )
+        return false;
+
+    Seek( 0 );
+    WriteInt32( 0x02000001 );         // OLE version, format
+    WriteInt32( 0 );             // Object flags
+    WriteInt32( 0 );                  // Update Options
+    WriteInt32( 0 );                  // reserved
+    WriteInt32( 0 );                 // Moniker 1
+    Commit();
+    return GetError() == ERRCODE_NONE;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */