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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 : #include "swdetect.hxx"
21 :
22 : #include <cppuhelper/supportsservice.hxx>
23 : #include <com/sun/star/container/XNameAccess.hpp>
24 : #include <com/sun/star/io/XInputStream.hpp>
25 : #include <sfx2/docfile.hxx>
26 : #include <sot/storage.hxx>
27 : #include <unotools/mediadescriptor.hxx>
28 :
29 : using namespace ::com::sun::star;
30 : using namespace ::com::sun::star::uno;
31 : using namespace ::com::sun::star::io;
32 : using namespace ::com::sun::star::task;
33 : using namespace ::com::sun::star::beans;
34 : using namespace ::com::sun::star::lang;
35 : using utl::MediaDescriptor;
36 :
37 1688 : SwFilterDetect::SwFilterDetect( const Reference < XMultiServiceFactory >& /*xFactory*/ )
38 : {
39 1688 : }
40 :
41 3376 : SwFilterDetect::~SwFilterDetect()
42 : {
43 3376 : }
44 :
45 1688 : OUString SAL_CALL SwFilterDetect::detect( Sequence< PropertyValue >& lDescriptor ) throw( RuntimeException, std::exception )
46 : {
47 1688 : MediaDescriptor aMediaDesc( lDescriptor );
48 3376 : OUString aTypeName = aMediaDesc.getUnpackedValueOrDefault( MediaDescriptor::PROP_TYPENAME(), OUString() );
49 3376 : uno::Reference< io::XInputStream > xInStream ( aMediaDesc[MediaDescriptor::PROP_INPUTSTREAM()], uno::UNO_QUERY );
50 1688 : if ( !xInStream.is() )
51 0 : return OUString();
52 :
53 3376 : SfxMedium aMedium;
54 1688 : aMedium.UseInteractionHandler( false );
55 1688 : aMedium.setStreamToLoadFrom( xInStream, true );
56 :
57 1688 : SvStream *pInStrm = aMedium.GetInStream();
58 1688 : if ( !pInStrm || pInStrm->GetError() )
59 0 : return OUString();
60 :
61 1688 : bool bIsDetected = false;
62 :
63 1688 : if ( aTypeName == "writer_Rich_Text_Format" )
64 : {
65 660 : pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
66 660 : bIsDetected = ( read_uInt8s_ToOString( *pInStrm, 5 ) == "{\\rtf" );
67 : }
68 1028 : else if ( aTypeName == "writer_MS_WinWord_5" )
69 : {
70 146 : pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
71 146 : const sal_uInt8 nBufSize = 3;
72 : sal_uInt8 nBuffer[ nBufSize ];
73 146 : if ( pInStrm->Read( nBuffer, nBufSize ) < nBufSize )
74 0 : return OUString();
75 :
76 146 : bIsDetected = (nBuffer[0] == 0x9B && nBuffer[1] == 0xA5 && nBuffer[2] == 0x21) // WinWord 1
77 146 : || (nBuffer[0] == 0x9C && nBuffer[1] == 0xA5 && nBuffer[2] == 0x21) // PMWord 1
78 146 : || (nBuffer[0] == 0xDB && nBuffer[1] == 0xA5 && nBuffer[2] == 0x2D) // WinWord 2
79 292 : || (nBuffer[0] == 0xDC && nBuffer[1] == 0xA5 && nBuffer[2] == 0x65); // WinWord 6.0/95, as a single stream file
80 : }
81 : else
82 : {
83 : // Do not attempt to create an SotStorage on a
84 : // 0-length stream as that would create the compound
85 : // document header on the stream and effectively write to
86 : // disk!
87 882 : pInStrm->Seek( STREAM_SEEK_TO_BEGIN );
88 882 : if ( pInStrm->remainingSize() == 0 )
89 0 : return OUString();
90 :
91 : try
92 : {
93 882 : SotStorageRef aStorage = new SotStorage ( pInStrm, false );
94 882 : if ( !aStorage->GetError() )
95 : {
96 156 : bIsDetected = aStorage->IsContained( "WordDocument" );
97 156 : if ( bIsDetected && aTypeName.startsWith( "writer_MS_Word_97" ) )
98 134 : bIsDetected = ( aStorage->IsContained("0Table") || aStorage->IsContained("1Table") );
99 882 : }
100 : }
101 0 : catch (...)
102 : {
103 0 : bIsDetected = false;
104 : }
105 : }
106 :
107 1688 : if ( bIsDetected )
108 776 : return aTypeName;
109 :
110 2600 : return OUString();
111 : }
112 :
113 : /* XServiceInfo */
114 0 : OUString SAL_CALL SwFilterDetect::getImplementationName() throw( RuntimeException, std::exception )
115 : {
116 0 : return impl_getStaticImplementationName();
117 : }
118 :
119 : /* XServiceInfo */
120 0 : sal_Bool SAL_CALL SwFilterDetect::supportsService( const OUString& sServiceName ) throw( RuntimeException, std::exception )
121 : {
122 0 : return cppu::supportsService(this, sServiceName);
123 : }
124 :
125 : /* XServiceInfo */
126 0 : Sequence< OUString > SAL_CALL SwFilterDetect::getSupportedServiceNames() throw( RuntimeException, std::exception )
127 : {
128 0 : return impl_getStaticSupportedServiceNames();
129 : }
130 :
131 : /* Helper for XServiceInfo */
132 20 : Sequence< OUString > SwFilterDetect::impl_getStaticSupportedServiceNames()
133 : {
134 20 : Sequence< OUString > seqServiceNames( 3 );
135 20 : seqServiceNames.getArray() [0] = "com.sun.star.frame.ExtendedTypeDetection";
136 20 : seqServiceNames.getArray() [1] = "com.sun.star.text.FormatDetector";
137 20 : seqServiceNames.getArray() [2] = "com.sun.star.text.W4WFormatDetector";
138 20 : return seqServiceNames ;
139 : }
140 :
141 : /* Helper for XServiceInfo */
142 40 : OUString SwFilterDetect::impl_getStaticImplementationName()
143 : {
144 40 : return OUString("com.sun.star.comp.writer.FormatDetector" );
145 : }
146 :
147 : /* Helper for registry */
148 1688 : Reference< XInterface > SAL_CALL SwFilterDetect::impl_createInstance( const Reference< XMultiServiceFactory >& xServiceManager ) throw( Exception )
149 : {
150 1688 : return Reference< XInterface >( *new SwFilterDetect( xServiceManager ) );
151 : }
152 :
153 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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