1 files changed, 244 insertions, 0 deletions
diff --git a/svl/source/misc/lockfilecommon.cxx b/svl/source/misc/lockfilecommon.cxx
new file mode 100644
index 000000000..982ce7ce0
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+++ b/svl/source/misc/lockfilecommon.cxx
@@ -0,0 +1,244 @@
+/* -*- 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 <stdio.h>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/io/WrongFormatException.hpp>
+
+#include <osl/time.h>
+#include <osl/security.hxx>
+#include <osl/socket.hxx>
+#include <osl/file.hxx>
+#include <o3tl/enumrange.hxx>
+
+#include <rtl/ustring.hxx>
+#include <rtl/strbuf.hxx>
+#include <rtl/ustrbuf.hxx>
+
+#include <tools/urlobj.hxx>
+#include <unotools/bootstrap.hxx>
+
+#include <unotools/useroptions.hxx>
+
+#include <salhelper/linkhelper.hxx>
+
+#include <svl/lockfilecommon.hxx>
+#include <utility>
+
+using namespace ::com::sun::star;
+
+namespace svt {
+
+
+LockFileCommon::LockFileCommon(OUString aLockFileURL)
+    : m_aURL(std::move(aLockFileURL))
+{
+}
+
+LockFileCommon::~LockFileCommon()
+{
+}
+
+
+const OUString& LockFileCommon::GetURL() const
+{
+    return m_aURL;
+}
+
+
+void LockFileCommon::SetURL(const OUString& aURL)
+{
+    m_aURL = aURL;
+}
+
+
+OUString LockFileCommon::GenerateOwnLockFileURL(
+    std::u16string_view aOrigURL, std::u16string_view aPrefix)
+{
+    INetURLObject aURL = ResolveLinks(INetURLObject(aOrigURL));
+    aURL.setName(OUStringConcatenation(aPrefix + aURL.GetLastName() + "%23" /*'#'*/));
+    return aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
+}
+
+
+INetURLObject LockFileCommon::ResolveLinks( const INetURLObject& aDocURL )
+{
+    if ( aDocURL.HasError() )
+        throw lang::IllegalArgumentException();
+
+    OUString aURLToCheck = aDocURL.GetMainURL(INetURLObject::DecodeMechanism::NONE);
+
+    // there is currently no UCB functionality to resolve the symbolic links;
+    // since the lock files are used only for local file systems the osl
+    // functionality is used directly
+    salhelper::LinkResolver aResolver(osl_FileStatus_Mask_FileName);
+    osl::FileBase::RC eStatus = aResolver.fetchFileStatus(aURLToCheck);
+    if (eStatus == osl::FileBase::E_None)
+        aURLToCheck = aResolver.m_aStatus.getFileURL();
+    else if (eStatus == osl::FileBase::E_MULTIHOP)
+    {
+        // do not allow too deep links
+        throw io::IOException();
+    }
+
+    return INetURLObject( aURLToCheck );
+}
+
+
+void LockFileCommon::ParseList( const uno::Sequence< sal_Int8 >& aBuffer, std::vector< LockFileEntry > & aResult )
+{
+    sal_Int32 nCurPos = 0;
+    while ( nCurPos < aBuffer.getLength() )
+    {
+        aResult.push_back( ParseEntry( aBuffer, nCurPos ) );
+    }
+}
+
+
+LockFileEntry LockFileCommon::ParseEntry( const uno::Sequence< sal_Int8 >& aBuffer, sal_Int32& io_nCurPos )
+{
+    LockFileEntry aResult;
+
+    for ( LockFileComponent nInd : o3tl::enumrange<LockFileComponent>() )
+    {
+        aResult[nInd] = ParseName( aBuffer, io_nCurPos );
+        if ( io_nCurPos >= aBuffer.getLength()
+          || ( nInd < LockFileComponent::LAST && aBuffer[io_nCurPos++] != ',' )
+          || ( nInd == LockFileComponent::LAST && aBuffer[io_nCurPos++] != ';' ) )
+            throw io::WrongFormatException();
+    }
+
+    return aResult;
+}
+
+
+OUString LockFileCommon::ParseName( const uno::Sequence< sal_Int8 >& aBuffer, sal_Int32& io_nCurPos )
+{
+    OStringBuffer aResult(128);
+    bool bHaveName = false;
+    bool bEscape = false;
+
+    while( !bHaveName )
+    {
+        if ( io_nCurPos >= aBuffer.getLength() )
+            throw io::WrongFormatException();
+
+        if ( bEscape )
+        {
+            if ( aBuffer[io_nCurPos] != ',' && aBuffer[io_nCurPos] != ';' && aBuffer[io_nCurPos] != '\\' )
+                throw io::WrongFormatException();
+
+            aResult.append( static_cast<char>(aBuffer[io_nCurPos]) );
+
+            bEscape = false;
+            io_nCurPos++;
+        }
+        else if ( aBuffer[io_nCurPos] == ',' || aBuffer[io_nCurPos] == ';' )
+            bHaveName = true;
+        else
+        {
+            if ( aBuffer[io_nCurPos] == '\\' )
+                bEscape = true;
+            else
+                aResult.append( static_cast<char>(aBuffer[io_nCurPos]) );
+
+            io_nCurPos++;
+        }
+    }
+
+    return OStringToOUString( aResult.makeStringAndClear(), RTL_TEXTENCODING_UTF8 );
+}
+
+
+OUString LockFileCommon::EscapeCharacters( const OUString& aSource )
+{
+    OUStringBuffer aBuffer(aSource.getLength()*2);
+    const sal_Unicode* pStr = aSource.getStr();
+    for ( sal_Int32 nInd = 0; nInd < aSource.getLength() && pStr[nInd] != 0; nInd++ )
+    {
+        if ( pStr[nInd] == '\\' || pStr[nInd] == ';' || pStr[nInd] == ',' )
+            aBuffer.append( '\\' );
+        aBuffer.append( pStr[nInd] );
+    }
+
+    return aBuffer.makeStringAndClear();
+}
+
+
+OUString LockFileCommon::GetOOOUserName()
+{
+    SvtUserOptions aUserOpt;
+    OUString aName = aUserOpt.GetFirstName();
+    if ( !aName.isEmpty() )
+        aName += " ";
+    aName += aUserOpt.GetLastName();
+
+    return aName;
+}
+
+
+OUString LockFileCommon::GetCurrentLocalTime()
+{
+    OUString aTime;
+
+    TimeValue aSysTime;
+    if ( osl_getSystemTime( &aSysTime ) )
+    {
+        TimeValue aLocTime;
+        if ( osl_getLocalTimeFromSystemTime( &aSysTime, &aLocTime ) )
+        {
+            oslDateTime aDateTime;
+            if ( osl_getDateTimeFromTimeValue( &aLocTime, &aDateTime ) )
+            {
+                char pDateTime[sizeof("65535.65535.-32768 65535:65535")];
+                    // reserve enough space for hypothetical max length
+                sprintf( pDateTime, "%02" SAL_PRIuUINT32 ".%02" SAL_PRIuUINT32 ".%4" SAL_PRIdINT32 " %02" SAL_PRIuUINT32 ":%02" SAL_PRIuUINT32, sal_uInt32(aDateTime.Day), sal_uInt32(aDateTime.Month), sal_Int32(aDateTime.Year), sal_uInt32(aDateTime.Hours), sal_uInt32(aDateTime.Minutes) );
+                aTime = OUString::createFromAscii( pDateTime );
+            }
+        }
+    }
+
+    return aTime;
+}
+
+
+LockFileEntry LockFileCommon::GenerateOwnEntry()
+{
+    LockFileEntry aResult;
+
+    aResult[LockFileComponent::OOOUSERNAME] = GetOOOUserName();
+
+    ::osl::Security aSecurity;
+    aSecurity.getUserName( aResult[LockFileComponent::SYSUSERNAME] );
+
+    aResult[LockFileComponent::LOCALHOST] = ::osl::SocketAddr::getLocalHostname();
+
+    aResult[LockFileComponent::EDITTIME] = GetCurrentLocalTime();
+
+    ::utl::Bootstrap::locateUserInstallation( aResult[LockFileComponent::USERURL] );
+
+
+    return aResult;
+}
+
+} // namespace svt
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */