1*ca5ec200SAndrew Rist /**************************************************************
2cdf0e10cSrcweir *
3*ca5ec200SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one
4*ca5ec200SAndrew Rist * or more contributor license agreements. See the NOTICE file
5*ca5ec200SAndrew Rist * distributed with this work for additional information
6*ca5ec200SAndrew Rist * regarding copyright ownership. The ASF licenses this file
7*ca5ec200SAndrew Rist * to you under the Apache License, Version 2.0 (the
8*ca5ec200SAndrew Rist * "License"); you may not use this file except in compliance
9*ca5ec200SAndrew Rist * with the License. You may obtain a copy of the License at
10*ca5ec200SAndrew Rist *
11*ca5ec200SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0
12*ca5ec200SAndrew Rist *
13*ca5ec200SAndrew Rist * Unless required by applicable law or agreed to in writing,
14*ca5ec200SAndrew Rist * software distributed under the License is distributed on an
15*ca5ec200SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*ca5ec200SAndrew Rist * KIND, either express or implied. See the License for the
17*ca5ec200SAndrew Rist * specific language governing permissions and limitations
18*ca5ec200SAndrew Rist * under the License.
19*ca5ec200SAndrew Rist *
20*ca5ec200SAndrew Rist *************************************************************/
21*ca5ec200SAndrew Rist
22*ca5ec200SAndrew Rist
23cdf0e10cSrcweir
24cdf0e10cSrcweir #include "oox/xls/biffdetector.hxx"
25cdf0e10cSrcweir
26cdf0e10cSrcweir #include <algorithm>
27cdf0e10cSrcweir #include <com/sun/star/io/XInputStream.hpp>
28cdf0e10cSrcweir #include <com/sun/star/uno/XComponentContext.hpp>
29cdf0e10cSrcweir #include <comphelper/mediadescriptor.hxx>
30cdf0e10cSrcweir #include <rtl/strbuf.hxx>
31cdf0e10cSrcweir #include "oox/helper/binaryinputstream.hxx"
32cdf0e10cSrcweir #include "oox/ole/olestorage.hxx"
33cdf0e10cSrcweir
34cdf0e10cSrcweir namespace oox {
35cdf0e10cSrcweir namespace xls {
36cdf0e10cSrcweir
37cdf0e10cSrcweir // ============================================================================
38cdf0e10cSrcweir
39cdf0e10cSrcweir using namespace ::com::sun::star::beans;
40cdf0e10cSrcweir using namespace ::com::sun::star::io;
41cdf0e10cSrcweir using namespace ::com::sun::star::lang;
42cdf0e10cSrcweir using namespace ::com::sun::star::uno;
43cdf0e10cSrcweir
44cdf0e10cSrcweir using ::comphelper::MediaDescriptor;
45cdf0e10cSrcweir using ::rtl::OStringBuffer;
46cdf0e10cSrcweir using ::rtl::OUString;
47cdf0e10cSrcweir
48cdf0e10cSrcweir // ============================================================================
49cdf0e10cSrcweir
BiffDetector_getSupportedServiceNames()50cdf0e10cSrcweir Sequence< OUString > BiffDetector_getSupportedServiceNames()
51cdf0e10cSrcweir {
52cdf0e10cSrcweir Sequence< OUString > aServiceNames( 1 );
53cdf0e10cSrcweir aServiceNames[ 0 ] = CREATE_OUSTRING( "com.sun.star.frame.ExtendedTypeDetection" );
54cdf0e10cSrcweir return aServiceNames;
55cdf0e10cSrcweir }
56cdf0e10cSrcweir
BiffDetector_getImplementationName()57cdf0e10cSrcweir OUString BiffDetector_getImplementationName()
58cdf0e10cSrcweir {
59cdf0e10cSrcweir return CREATE_OUSTRING( "com.sun.star.comp.oox.xls.BiffDetector" );
60cdf0e10cSrcweir }
61cdf0e10cSrcweir
BiffDetector_createInstance(const Reference<XComponentContext> & rxContext)62cdf0e10cSrcweir Reference< XInterface > SAL_CALL BiffDetector_createInstance( const Reference< XComponentContext >& rxContext ) throw( Exception )
63cdf0e10cSrcweir {
64cdf0e10cSrcweir return static_cast< ::cppu::OWeakObject* >( new BiffDetector( rxContext ) );
65cdf0e10cSrcweir }
66cdf0e10cSrcweir
67cdf0e10cSrcweir // ============================================================================
68cdf0e10cSrcweir
BiffDetector(const Reference<XComponentContext> & rxContext)69cdf0e10cSrcweir BiffDetector::BiffDetector( const Reference< XComponentContext >& rxContext ) throw( RuntimeException ) :
70cdf0e10cSrcweir mxContext( rxContext, UNO_SET_THROW )
71cdf0e10cSrcweir {
72cdf0e10cSrcweir }
73cdf0e10cSrcweir
~BiffDetector()74cdf0e10cSrcweir BiffDetector::~BiffDetector()
75cdf0e10cSrcweir {
76cdf0e10cSrcweir }
77cdf0e10cSrcweir
detectStreamBiffVersion(BinaryInputStream & rInStream)78cdf0e10cSrcweir /*static*/ BiffType BiffDetector::detectStreamBiffVersion( BinaryInputStream& rInStream )
79cdf0e10cSrcweir {
80cdf0e10cSrcweir BiffType eBiff = BIFF_UNKNOWN;
81cdf0e10cSrcweir if( !rInStream.isEof() && rInStream.isSeekable() && (rInStream.size() > 4) )
82cdf0e10cSrcweir {
83cdf0e10cSrcweir sal_Int64 nOldPos = rInStream.tell();
84cdf0e10cSrcweir rInStream.seekToStart();
85cdf0e10cSrcweir sal_uInt16 nBofId, nBofSize;
86cdf0e10cSrcweir rInStream >> nBofId >> nBofSize;
87cdf0e10cSrcweir
88cdf0e10cSrcweir if( (4 <= nBofSize) && (nBofSize <= 16) && (rInStream.tell() + nBofSize <= rInStream.size()) )
89cdf0e10cSrcweir {
90cdf0e10cSrcweir switch( nBofId )
91cdf0e10cSrcweir {
92cdf0e10cSrcweir case BIFF2_ID_BOF:
93cdf0e10cSrcweir eBiff = BIFF2;
94cdf0e10cSrcweir break;
95cdf0e10cSrcweir case BIFF3_ID_BOF:
96cdf0e10cSrcweir eBiff = BIFF3;
97cdf0e10cSrcweir break;
98cdf0e10cSrcweir case BIFF4_ID_BOF:
99cdf0e10cSrcweir eBiff = BIFF4;
100cdf0e10cSrcweir break;
101cdf0e10cSrcweir case BIFF5_ID_BOF:
102cdf0e10cSrcweir {
103cdf0e10cSrcweir if( 6 <= nBofSize )
104cdf0e10cSrcweir {
105cdf0e10cSrcweir sal_uInt16 nVersion;
106cdf0e10cSrcweir rInStream >> nVersion;
107cdf0e10cSrcweir // #i23425# #i44031# #i62752# there are some *really* broken documents out there...
108cdf0e10cSrcweir switch( nVersion & 0xFF00 )
109cdf0e10cSrcweir {
110cdf0e10cSrcweir case 0: eBiff = BIFF5; break; // #i44031# #i62752#
111cdf0e10cSrcweir case BIFF_BOF_BIFF2: eBiff = BIFF2; break;
112cdf0e10cSrcweir case BIFF_BOF_BIFF3: eBiff = BIFF3; break;
113cdf0e10cSrcweir case BIFF_BOF_BIFF4: eBiff = BIFF4; break;
114cdf0e10cSrcweir case BIFF_BOF_BIFF5: eBiff = BIFF5; break;
115cdf0e10cSrcweir case BIFF_BOF_BIFF8: eBiff = BIFF8; break;
116cdf0e10cSrcweir default: OSL_ENSURE( false,
117cdf0e10cSrcweir OStringBuffer( "lclDetectStreamBiffVersion - unknown BIFF version: 0x" ).
118cdf0e10cSrcweir append( static_cast< sal_Int32 >( nVersion ), 16 ).getStr() );
119cdf0e10cSrcweir }
120cdf0e10cSrcweir }
121cdf0e10cSrcweir }
122cdf0e10cSrcweir break;
123cdf0e10cSrcweir // else do nothing, no BIFF stream
124cdf0e10cSrcweir }
125cdf0e10cSrcweir }
126cdf0e10cSrcweir rInStream.seek( nOldPos );
127cdf0e10cSrcweir }
128cdf0e10cSrcweir return eBiff;
129cdf0e10cSrcweir }
130cdf0e10cSrcweir
detectStorageBiffVersion(OUString & orWorkbookStreamName,const StorageRef & rxStorage)131cdf0e10cSrcweir /*static*/ BiffType BiffDetector::detectStorageBiffVersion( OUString& orWorkbookStreamName, const StorageRef& rxStorage )
132cdf0e10cSrcweir {
133cdf0e10cSrcweir static const OUString saBookName = CREATE_OUSTRING( "Book" );
134cdf0e10cSrcweir static const OUString saWorkbookName = CREATE_OUSTRING( "Workbook" );
135cdf0e10cSrcweir
136cdf0e10cSrcweir BiffType eBiff = BIFF_UNKNOWN;
137cdf0e10cSrcweir if( rxStorage.get() )
138cdf0e10cSrcweir {
139cdf0e10cSrcweir if( rxStorage->isStorage() )
140cdf0e10cSrcweir {
141cdf0e10cSrcweir // try to open the "Book" stream
142cdf0e10cSrcweir BinaryXInputStream aBookStrm5( rxStorage->openInputStream( saBookName ), true );
143cdf0e10cSrcweir BiffType eBookStrm5Biff = detectStreamBiffVersion( aBookStrm5 );
144cdf0e10cSrcweir
145cdf0e10cSrcweir // try to open the "Workbook" stream
146cdf0e10cSrcweir BinaryXInputStream aBookStrm8( rxStorage->openInputStream( saWorkbookName ), true );
147cdf0e10cSrcweir BiffType eBookStrm8Biff = detectStreamBiffVersion( aBookStrm8 );
148cdf0e10cSrcweir
149cdf0e10cSrcweir // decide which stream to use
150cdf0e10cSrcweir if( (eBookStrm8Biff != BIFF_UNKNOWN) && ((eBookStrm5Biff == BIFF_UNKNOWN) || (eBookStrm8Biff > eBookStrm5Biff)) )
151cdf0e10cSrcweir {
152cdf0e10cSrcweir /* Only "Workbook" stream exists; or both streams exist, and
153cdf0e10cSrcweir "Workbook" has higher BIFF version than "Book" stream. */
154cdf0e10cSrcweir eBiff = eBookStrm8Biff;
155cdf0e10cSrcweir orWorkbookStreamName = saWorkbookName;
156cdf0e10cSrcweir }
157cdf0e10cSrcweir else if( eBookStrm5Biff != BIFF_UNKNOWN )
158cdf0e10cSrcweir {
159cdf0e10cSrcweir /* Only "Book" stream exists; or both streams exist, and
160cdf0e10cSrcweir "Book" has higher BIFF version than "Workbook" stream. */
161cdf0e10cSrcweir eBiff = eBookStrm5Biff;
162cdf0e10cSrcweir orWorkbookStreamName = saBookName;
163cdf0e10cSrcweir }
164cdf0e10cSrcweir }
165cdf0e10cSrcweir else
166cdf0e10cSrcweir {
167cdf0e10cSrcweir // no storage, try plain input stream from medium (even for BIFF5+)
168cdf0e10cSrcweir BinaryXInputStream aStrm( rxStorage->openInputStream( OUString() ), false );
169cdf0e10cSrcweir eBiff = detectStreamBiffVersion( aStrm );
170cdf0e10cSrcweir orWorkbookStreamName = OUString();
171cdf0e10cSrcweir }
172cdf0e10cSrcweir }
173cdf0e10cSrcweir
174cdf0e10cSrcweir return eBiff;
175cdf0e10cSrcweir }
176cdf0e10cSrcweir
177cdf0e10cSrcweir // com.sun.star.lang.XServiceInfo interface -----------------------------------
178cdf0e10cSrcweir
getImplementationName()179cdf0e10cSrcweir OUString SAL_CALL BiffDetector::getImplementationName() throw( RuntimeException )
180cdf0e10cSrcweir {
181cdf0e10cSrcweir return BiffDetector_getImplementationName();
182cdf0e10cSrcweir }
183cdf0e10cSrcweir
supportsService(const OUString & rService)184cdf0e10cSrcweir sal_Bool SAL_CALL BiffDetector::supportsService( const OUString& rService ) throw( RuntimeException )
185cdf0e10cSrcweir {
186cdf0e10cSrcweir const Sequence< OUString > aServices = BiffDetector_getSupportedServiceNames();
187cdf0e10cSrcweir const OUString* pArray = aServices.getConstArray();
188cdf0e10cSrcweir const OUString* pArrayEnd = pArray + aServices.getLength();
189cdf0e10cSrcweir return ::std::find( pArray, pArrayEnd, rService ) != pArrayEnd;
190cdf0e10cSrcweir }
191cdf0e10cSrcweir
getSupportedServiceNames()192cdf0e10cSrcweir Sequence< OUString > SAL_CALL BiffDetector::getSupportedServiceNames() throw( RuntimeException )
193cdf0e10cSrcweir {
194cdf0e10cSrcweir return BiffDetector_getSupportedServiceNames();
195cdf0e10cSrcweir }
196cdf0e10cSrcweir
197cdf0e10cSrcweir // com.sun.star.document.XExtendedFilterDetect interface ----------------------
198cdf0e10cSrcweir
detect(Sequence<PropertyValue> & rDescriptor)199cdf0e10cSrcweir OUString SAL_CALL BiffDetector::detect( Sequence< PropertyValue >& rDescriptor ) throw( RuntimeException )
200cdf0e10cSrcweir {
201cdf0e10cSrcweir OUString aTypeName;
202cdf0e10cSrcweir
203cdf0e10cSrcweir MediaDescriptor aDescriptor( rDescriptor );
204cdf0e10cSrcweir aDescriptor.addInputStream();
205cdf0e10cSrcweir
206cdf0e10cSrcweir Reference< XInputStream > xInStrm( aDescriptor[ MediaDescriptor::PROP_INPUTSTREAM() ], UNO_QUERY_THROW );
207cdf0e10cSrcweir StorageRef xStorage( new ::oox::ole::OleStorage( mxContext, xInStrm, true ) );
208cdf0e10cSrcweir
209cdf0e10cSrcweir OUString aWorkbookName;
210cdf0e10cSrcweir switch( detectStorageBiffVersion( aWorkbookName, xStorage ) )
211cdf0e10cSrcweir {
212cdf0e10cSrcweir case BIFF2:
213cdf0e10cSrcweir case BIFF3:
214cdf0e10cSrcweir case BIFF4: aTypeName = CREATE_OUSTRING( "calc_MS_Excel_40" ); break;
215cdf0e10cSrcweir case BIFF5: aTypeName = CREATE_OUSTRING( "calc_MS_Excel_95" ); break;
216cdf0e10cSrcweir case BIFF8: aTypeName = CREATE_OUSTRING( "calc_MS_Excel_97" ); break;
217cdf0e10cSrcweir default:;
218cdf0e10cSrcweir }
219cdf0e10cSrcweir
220cdf0e10cSrcweir return aTypeName;
221cdf0e10cSrcweir }
222cdf0e10cSrcweir
223cdf0e10cSrcweir // ============================================================================
224cdf0e10cSrcweir
225cdf0e10cSrcweir } // namespace xls
226cdf0e10cSrcweir } // namespace oox
227