1dc71daf7f
Change-Id: Ie40801df8866b52c1458e020ffa9cba120720af7 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/109552 Tested-by: Jenkins Reviewed-by: Thorsten Behrens <thorsten.behrens@allotropia.de>
437 lines
17 KiB
C++
437 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <config_features.h>
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#include <sfx2/docmacromode.hxx>
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#include <sfx2/signaturestate.hxx>
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#include <sfx2/docfile.hxx>
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#include <com/sun/star/document/MacroExecMode.hpp>
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#include <com/sun/star/task/ErrorCodeRequest.hpp>
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#include <com/sun/star/task/DocumentMacroConfirmationRequest.hpp>
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#include <com/sun/star/security/DocumentDigitalSignatures.hpp>
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#include <com/sun/star/script/XLibraryContainer.hpp>
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#include <com/sun/star/document/XEmbeddedScripts.hpp>
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#include <comphelper/processfactory.hxx>
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#include <framework/interaction.hxx>
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#include <osl/file.hxx>
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#include <unotools/securityoptions.hxx>
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#include <svtools/sfxecode.hxx>
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#include <tools/diagnose_ex.h>
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#include <tools/urlobj.hxx>
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namespace sfx2
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{
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using ::com::sun::star::uno::Reference;
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using ::com::sun::star::task::XInteractionHandler;
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using ::com::sun::star::uno::Any;
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using ::com::sun::star::uno::Sequence;
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using ::com::sun::star::task::DocumentMacroConfirmationRequest;
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using ::com::sun::star::task::ErrorCodeRequest;
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using ::com::sun::star::uno::Exception;
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using ::com::sun::star::security::DocumentDigitalSignatures;
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using ::com::sun::star::security::XDocumentDigitalSignatures;
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using ::com::sun::star::embed::XStorage;
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using ::com::sun::star::document::XEmbeddedScripts;
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using ::com::sun::star::script::XLibraryContainer;
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using ::com::sun::star::container::XNameAccess;
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using ::com::sun::star::uno::UNO_QUERY_THROW;
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namespace MacroExecMode = ::com::sun::star::document::MacroExecMode;
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//= DocumentMacroMode_Data
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struct DocumentMacroMode_Data
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{
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IMacroDocumentAccess& m_rDocumentAccess;
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bool m_bMacroDisabledMessageShown;
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bool m_bDocMacroDisabledMessageShown;
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explicit DocumentMacroMode_Data( IMacroDocumentAccess& rDocumentAccess )
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:m_rDocumentAccess( rDocumentAccess )
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,m_bMacroDisabledMessageShown( false )
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,m_bDocMacroDisabledMessageShown( false )
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{
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}
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};
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//= helper
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namespace
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{
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void lcl_showGeneralSfxErrorOnce( const Reference< XInteractionHandler >& rxHandler, ErrCode nSfxErrorCode, bool& rbAlreadyShown )
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{
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if ( rbAlreadyShown )
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return;
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ErrorCodeRequest aErrorCodeRequest;
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aErrorCodeRequest.ErrCode = sal_uInt32(nSfxErrorCode);
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SfxMedium::CallApproveHandler( rxHandler, makeAny( aErrorCodeRequest ), false );
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rbAlreadyShown = true;
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}
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void lcl_showMacrosDisabledError( const Reference< XInteractionHandler >& rxHandler, bool& rbAlreadyShown )
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{
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lcl_showGeneralSfxErrorOnce( rxHandler, ERRCODE_SFX_MACROS_SUPPORT_DISABLED, rbAlreadyShown );
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}
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void lcl_showDocumentMacrosDisabledError( const Reference< XInteractionHandler >& rxHandler, bool& rbAlreadyShown )
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{
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#ifdef MACOSX
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lcl_showGeneralSfxErrorOnce( rxHandler, ERRCODE_SFX_DOCUMENT_MACRO_DISABLED_MAC, rbAlreadyShown );
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#else
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lcl_showGeneralSfxErrorOnce( rxHandler, ERRCODE_SFX_DOCUMENT_MACRO_DISABLED, rbAlreadyShown );
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#endif
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}
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void lcl_showMacrosDisabledUnsignedContentError( const Reference< XInteractionHandler >& rxHandler, bool& rbAlreadyShown )
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{
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lcl_showGeneralSfxErrorOnce( rxHandler, ERRCODE_SFX_DOCUMENT_MACRO_DISABLED_CONTENT_UNSIGNED, rbAlreadyShown );
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}
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bool lcl_showMacroWarning( const Reference< XInteractionHandler >& rxHandler,
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const OUString& rDocumentLocation )
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{
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DocumentMacroConfirmationRequest aRequest;
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aRequest.DocumentURL = rDocumentLocation;
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return SfxMedium::CallApproveHandler( rxHandler, makeAny( aRequest ), true );
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}
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}
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//= DocumentMacroMode
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DocumentMacroMode::DocumentMacroMode( IMacroDocumentAccess& rDocumentAccess )
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:m_xData( std::make_shared<DocumentMacroMode_Data>( rDocumentAccess ) ),
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m_bNeedsContentSigned(false)
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{
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}
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bool DocumentMacroMode::allowMacroExecution()
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{
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m_xData->m_rDocumentAccess.setCurrentMacroExecMode( MacroExecMode::ALWAYS_EXECUTE_NO_WARN );
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return true;
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}
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bool DocumentMacroMode::disallowMacroExecution()
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{
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m_xData->m_rDocumentAccess.setCurrentMacroExecMode( MacroExecMode::NEVER_EXECUTE );
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return false;
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}
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bool DocumentMacroMode::adjustMacroMode( const Reference< XInteractionHandler >& rxInteraction, bool bHasValidContentSignature )
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{
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sal_uInt16 nMacroExecutionMode = m_xData->m_rDocumentAccess.getCurrentMacroExecMode();
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if ( SvtSecurityOptions().IsMacroDisabled() )
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{
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// no macro should be executed at all
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lcl_showMacrosDisabledError( rxInteraction, m_xData->m_bMacroDisabledMessageShown );
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return disallowMacroExecution();
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}
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// get setting from configuration if required
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enum AutoConfirmation
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{
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eNoAutoConfirm,
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eAutoConfirmApprove,
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eAutoConfirmReject
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};
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AutoConfirmation eAutoConfirm( eNoAutoConfirm );
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if ( ( nMacroExecutionMode == MacroExecMode::USE_CONFIG )
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|| ( nMacroExecutionMode == MacroExecMode::USE_CONFIG_REJECT_CONFIRMATION )
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|| ( nMacroExecutionMode == MacroExecMode::USE_CONFIG_APPROVE_CONFIRMATION )
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)
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{
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// check confirm first, as nMacroExecutionMode is always overwritten by the GetMacroSecurityLevel() switch
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if (nMacroExecutionMode == MacroExecMode::USE_CONFIG_REJECT_CONFIRMATION)
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eAutoConfirm = eAutoConfirmReject;
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else if (nMacroExecutionMode == MacroExecMode::USE_CONFIG_APPROVE_CONFIRMATION)
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eAutoConfirm = eAutoConfirmApprove;
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SvtSecurityOptions aOpt;
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switch ( aOpt.GetMacroSecurityLevel() )
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{
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case 3:
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nMacroExecutionMode = MacroExecMode::FROM_LIST_NO_WARN;
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break;
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case 2:
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nMacroExecutionMode = MacroExecMode::FROM_LIST_AND_SIGNED_WARN;
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break;
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case 1:
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nMacroExecutionMode = MacroExecMode::ALWAYS_EXECUTE;
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break;
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case 0:
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nMacroExecutionMode = MacroExecMode::ALWAYS_EXECUTE_NO_WARN;
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break;
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default:
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OSL_FAIL( "DocumentMacroMode::adjustMacroMode: unexpected macro security level!" );
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nMacroExecutionMode = MacroExecMode::NEVER_EXECUTE;
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}
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}
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if ( nMacroExecutionMode == MacroExecMode::NEVER_EXECUTE )
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return false;
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if ( nMacroExecutionMode == MacroExecMode::ALWAYS_EXECUTE_NO_WARN )
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return true;
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try
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{
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// get document location from medium name and check whether it is a trusted one
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// the service is created without document version, since it is not of interest here
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Reference< XDocumentDigitalSignatures > xSignatures(DocumentDigitalSignatures::createDefault(::comphelper::getProcessComponentContext()));
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INetURLObject aURLReferer( m_xData->m_rDocumentAccess.getDocumentLocation() );
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OUString aLocation;
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if ( aURLReferer.removeSegment() )
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aLocation = aURLReferer.GetMainURL( INetURLObject::DecodeMechanism::NONE );
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if ( !aLocation.isEmpty() && xSignatures->isLocationTrusted( aLocation ) )
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{
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return allowMacroExecution();
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}
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// at this point it is clear that the document is not in the secure location
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if ( nMacroExecutionMode == MacroExecMode::FROM_LIST_NO_WARN )
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{
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lcl_showDocumentMacrosDisabledError( rxInteraction, m_xData->m_bDocMacroDisabledMessageShown );
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return disallowMacroExecution();
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}
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// check whether the document is signed with trusted certificate
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if ( nMacroExecutionMode != MacroExecMode::FROM_LIST )
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{
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// the trusted macro check will also retrieve the signature state ( small optimization )
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const SvtSecurityOptions aSecOption;
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const bool bAllowUIToAddAuthor = nMacroExecutionMode != MacroExecMode::FROM_LIST_AND_SIGNED_NO_WARN
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&& (nMacroExecutionMode == MacroExecMode::ALWAYS_EXECUTE
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|| !aSecOption.IsReadOnly(SvtSecurityOptions::EOption::MacroTrustedAuthors));
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const bool bHasTrustedMacroSignature = m_xData->m_rDocumentAccess.hasTrustedScriptingSignature(bAllowUIToAddAuthor);
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SignatureState nSignatureState = m_xData->m_rDocumentAccess.getScriptingSignatureState();
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if ( nSignatureState == SignatureState::BROKEN )
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{
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if (!bAllowUIToAddAuthor)
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lcl_showDocumentMacrosDisabledError(rxInteraction, m_xData->m_bDocMacroDisabledMessageShown);
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return disallowMacroExecution();
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}
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else if ( m_xData->m_rDocumentAccess.macroCallsSeenWhileLoading() &&
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bHasTrustedMacroSignature &&
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!bHasValidContentSignature)
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{
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// When macros are signed, and the document has events which call macros, the document content needs to be signed too.
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lcl_showMacrosDisabledUnsignedContentError(rxInteraction, m_xData->m_bDocMacroDisabledMessageShown);
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return disallowMacroExecution();
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}
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else if ( bHasTrustedMacroSignature )
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{
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// there is trusted macro signature, allow macro execution
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return allowMacroExecution();
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}
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else if ( nSignatureState == SignatureState::OK
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|| nSignatureState == SignatureState::NOTVALIDATED )
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{
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// there is valid signature, but it is not from the trusted author
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if (!bAllowUIToAddAuthor)
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lcl_showDocumentMacrosDisabledError(rxInteraction, m_xData->m_bDocMacroDisabledMessageShown);
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return disallowMacroExecution();
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}
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}
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// at this point it is clear that the document is neither in secure location nor signed with trusted certificate
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if ( ( nMacroExecutionMode == MacroExecMode::FROM_LIST_AND_SIGNED_NO_WARN )
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|| ( nMacroExecutionMode == MacroExecMode::FROM_LIST_AND_SIGNED_WARN )
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)
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{
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if ( nMacroExecutionMode == MacroExecMode::FROM_LIST_AND_SIGNED_WARN )
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lcl_showDocumentMacrosDisabledError( rxInteraction, m_xData->m_bDocMacroDisabledMessageShown );
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return disallowMacroExecution();
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}
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}
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catch ( const Exception& )
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{
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if ( ( nMacroExecutionMode == MacroExecMode::FROM_LIST_NO_WARN )
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|| ( nMacroExecutionMode == MacroExecMode::FROM_LIST_AND_SIGNED_WARN )
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|| ( nMacroExecutionMode == MacroExecMode::FROM_LIST_AND_SIGNED_NO_WARN )
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)
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{
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return disallowMacroExecution();
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}
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}
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// confirmation is required
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bool bSecure = false;
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if ( eAutoConfirm == eNoAutoConfirm )
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{
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OUString sReferrer( m_xData->m_rDocumentAccess.getDocumentLocation() );
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OUString aSystemFileURL;
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if ( osl::FileBase::getSystemPathFromFileURL( sReferrer, aSystemFileURL ) == osl::FileBase::E_None )
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sReferrer = aSystemFileURL;
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bSecure = lcl_showMacroWarning( rxInteraction, sReferrer );
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}
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else
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bSecure = ( eAutoConfirm == eAutoConfirmApprove );
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return ( bSecure ? allowMacroExecution() : disallowMacroExecution() );
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}
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bool DocumentMacroMode::isMacroExecutionDisallowed() const
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{
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return m_xData->m_rDocumentAccess.getCurrentMacroExecMode() == MacroExecMode::NEVER_EXECUTE;
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}
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bool DocumentMacroMode::containerHasBasicMacros( const Reference< XLibraryContainer >& xContainer )
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{
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bool bHasMacroLib = false;
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try
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{
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if ( xContainer.is() )
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{
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// a library container exists; check if it's empty
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// if there are libraries except the "Standard" library
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// we assume that they are not empty (because they have been created by the user)
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if ( !xContainer->hasElements() )
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bHasMacroLib = false;
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else
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{
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const OUString aStdLibName( "Standard" );
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const OUString aVBAProject( "VBAProject" );
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const Sequence< OUString > aElements = xContainer->getElementNames();
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for( const OUString& aElement : aElements )
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{
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if( aElement == aStdLibName || aElement == aVBAProject )
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{
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Reference < XNameAccess > xLib;
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Any aAny = xContainer->getByName( aElement );
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aAny >>= xLib;
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if ( xLib.is() && xLib->hasElements() )
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return true;
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}
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else
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return true;
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}
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}
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}
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}
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catch( const Exception& )
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{
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DBG_UNHANDLED_EXCEPTION("sfx.doc");
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}
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return bHasMacroLib;
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}
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bool DocumentMacroMode::hasMacroLibrary() const
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{
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bool bHasMacroLib = false;
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#if HAVE_FEATURE_SCRIPTING
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try
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{
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Reference< XEmbeddedScripts > xScripts( m_xData->m_rDocumentAccess.getEmbeddedDocumentScripts() );
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Reference< XLibraryContainer > xContainer;
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if ( xScripts.is() )
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xContainer.set( xScripts->getBasicLibraries(), UNO_QUERY_THROW );
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bHasMacroLib = containerHasBasicMacros( xContainer );
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}
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catch( const Exception& )
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{
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DBG_UNHANDLED_EXCEPTION("sfx.doc");
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}
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#endif
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return bHasMacroLib;
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}
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bool DocumentMacroMode::storageHasMacros( const Reference< XStorage >& rxStorage )
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{
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bool bHasMacros = false;
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if ( rxStorage.is() )
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{
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try
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{
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const OUString s_sBasicStorageName( OUString::intern( RTL_CONSTASCII_USTRINGPARAM( "Basic" ) ) );
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const OUString s_sScriptsStorageName( OUString::intern( RTL_CONSTASCII_USTRINGPARAM( "Scripts" ) ) );
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bHasMacros =( ( rxStorage->hasByName( s_sBasicStorageName )
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&& rxStorage->isStorageElement( s_sBasicStorageName )
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)
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|| ( rxStorage->hasByName( s_sScriptsStorageName )
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&& rxStorage->isStorageElement( s_sScriptsStorageName )
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)
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);
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}
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catch ( const Exception& )
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{
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DBG_UNHANDLED_EXCEPTION("sfx.doc");
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}
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}
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return bHasMacros;
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}
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bool DocumentMacroMode::checkMacrosOnLoading( const Reference< XInteractionHandler >& rxInteraction, bool bHasValidContentSignature )
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{
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bool bAllow = false;
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if ( SvtSecurityOptions().IsMacroDisabled() )
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{
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// no macro should be executed at all
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bAllow = disallowMacroExecution();
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}
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else
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{
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if (m_xData->m_rDocumentAccess.documentStorageHasMacros() || hasMacroLibrary() || m_xData->m_rDocumentAccess.macroCallsSeenWhileLoading())
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{
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if (m_xData->m_rDocumentAccess.macroCallsSeenWhileLoading())
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m_bNeedsContentSigned = true;
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bAllow = adjustMacroMode( rxInteraction, bHasValidContentSignature );
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}
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else if ( !isMacroExecutionDisallowed() )
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{
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// if macros will be added by the user later, the security check is obsolete
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bAllow = allowMacroExecution();
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}
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}
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return bAllow;
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}
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} // namespace sfx2
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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