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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 <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
21 : #include <com/sun/star/xml/sax/XDocumentHandler.hpp>
22 : #include <com/sun/star/xml/sax/XAttributeList.hpp>
23 : #include <com/sun/star/xml/crypto/DigestID.hpp>
24 : #include <com/sun/star/xml/crypto/CipherID.hpp>
25 : #include <com/sun/star/beans/PropertyValue.hpp>
26 : #include <com/sun/star/uno/RuntimeException.hpp>
27 :
28 : #include <ManifestDefines.hxx>
29 : #include <ManifestExport.hxx>
30 : #include <sax/tools/converter.hxx>
31 :
32 : #include <osl/diagnose.h>
33 : #include <rtl/ustrbuf.hxx>
34 : #include <comphelper/documentconstants.hxx>
35 : #include <comphelper/attributelist.hxx>
36 :
37 : using namespace ::com::sun::star;
38 :
39 : #if OSL_DEBUG_LEVEL > 0
40 : #define THROW_WHERE SAL_WHERE
41 : #else
42 : #define THROW_WHERE ""
43 : #endif
44 :
45 269 : ManifestExport::ManifestExport( uno::Reference< xml::sax::XDocumentHandler > xHandler, const uno::Sequence< uno::Sequence < beans::PropertyValue > >& rManList )
46 : {
47 269 : const OUString sFileEntryElement ( ELEMENT_FILE_ENTRY );
48 538 : const OUString sManifestElement ( ELEMENT_MANIFEST );
49 538 : const OUString sEncryptionDataElement( ELEMENT_ENCRYPTION_DATA );
50 538 : const OUString sAlgorithmElement ( ELEMENT_ALGORITHM );
51 538 : const OUString sStartKeyGenerationElement ( ELEMENT_START_KEY_GENERATION );
52 538 : const OUString sKeyDerivationElement ( ELEMENT_KEY_DERIVATION );
53 :
54 538 : const OUString sCdataAttribute ( ATTRIBUTE_CDATA );
55 538 : const OUString sMediaTypeAttribute ( ATTRIBUTE_MEDIA_TYPE );
56 538 : const OUString sVersionAttribute ( ATTRIBUTE_VERSION );
57 538 : const OUString sFullPathAttribute ( ATTRIBUTE_FULL_PATH );
58 538 : const OUString sSizeAttribute ( ATTRIBUTE_SIZE );
59 538 : const OUString sKeySizeAttribute ( ATTRIBUTE_KEY_SIZE );
60 538 : const OUString sSaltAttribute ( ATTRIBUTE_SALT );
61 538 : const OUString sInitialisationVectorAttribute ( ATTRIBUTE_INITIALISATION_VECTOR );
62 538 : const OUString sIterationCountAttribute ( ATTRIBUTE_ITERATION_COUNT );
63 538 : const OUString sAlgorithmNameAttribute ( ATTRIBUTE_ALGORITHM_NAME );
64 538 : const OUString sStartKeyGenerationNameAttribute ( ATTRIBUTE_START_KEY_GENERATION_NAME );
65 538 : const OUString sKeyDerivationNameAttribute ( ATTRIBUTE_KEY_DERIVATION_NAME );
66 538 : const OUString sChecksumTypeAttribute ( ATTRIBUTE_CHECKSUM_TYPE );
67 538 : const OUString sChecksumAttribute ( ATTRIBUTE_CHECKSUM);
68 :
69 538 : const OUString sFullPathProperty ( "FullPath" );
70 538 : const OUString sVersionProperty ( "Version" );
71 538 : const OUString sMediaTypeProperty ( "MediaType" );
72 538 : const OUString sIterationCountProperty ( "IterationCount" );
73 538 : const OUString sDerivedKeySizeProperty ( "DerivedKeySize" );
74 538 : const OUString sSaltProperty ( "Salt" );
75 538 : const OUString sInitialisationVectorProperty( "InitialisationVector" );
76 538 : const OUString sSizeProperty ( "Size" );
77 538 : const OUString sDigestProperty ( "Digest" );
78 538 : const OUString sEncryptionAlgProperty ( "EncryptionAlgorithm" );
79 538 : const OUString sStartKeyAlgProperty ( "StartKeyAlgorithm" );
80 538 : const OUString sDigestAlgProperty ( "DigestAlgorithm" );
81 :
82 538 : const OUString sWhiteSpace ( " " );
83 :
84 538 : const OUString sSHA256_URL ( SHA256_URL );
85 538 : const OUString sSHA1_Name ( SHA1_NAME );
86 :
87 538 : const OUString sSHA1_1k_Name ( SHA1_1K_NAME );
88 538 : const OUString sSHA256_1k_URL ( SHA256_1K_URL );
89 :
90 538 : const OUString sBlowfish_Name ( BLOWFISH_NAME );
91 538 : const OUString sAES256_URL ( AES256_URL );
92 :
93 538 : const OUString sPBKDF2_Name ( PBKDF2_NAME );
94 :
95 269 : ::comphelper::AttributeList * pRootAttrList = new ::comphelper::AttributeList;
96 269 : const uno::Sequence < beans::PropertyValue > *pSequence = rManList.getConstArray();
97 269 : const sal_uInt32 nManLength = rManList.getLength();
98 :
99 : // find the mediatype of the document if any
100 538 : OUString aDocMediaType;
101 538 : OUString aDocVersion;
102 269 : for (sal_uInt32 nInd = 0; nInd < nManLength ; nInd++ )
103 : {
104 269 : OUString aMediaType;
105 269 : OUString aPath;
106 269 : OUString aVersion;
107 :
108 269 : const beans::PropertyValue *pValue = pSequence[nInd].getConstArray();
109 836 : for (sal_uInt32 j = 0, nNum = pSequence[nInd].getLength(); j < nNum; j++, pValue++)
110 : {
111 807 : if (pValue->Name.equals (sMediaTypeProperty) )
112 : {
113 269 : pValue->Value >>= aMediaType;
114 : }
115 538 : else if (pValue->Name.equals (sFullPathProperty) )
116 : {
117 269 : pValue->Value >>= aPath;
118 : }
119 269 : else if (pValue->Name.equals (sVersionProperty) )
120 : {
121 269 : pValue->Value >>= aVersion;
122 : }
123 :
124 807 : if ( !aPath.isEmpty() && !aMediaType.isEmpty() && !aVersion.isEmpty() )
125 240 : break;
126 : }
127 :
128 269 : if ( aPath == "/" )
129 : {
130 269 : aDocMediaType = aMediaType;
131 269 : aDocVersion = aVersion;
132 269 : break;
133 : }
134 0 : }
135 :
136 269 : bool bProvideDTD = false;
137 269 : bool bAcceptNonemptyVersion = false;
138 269 : bool bStoreStartKeyGeneration = false;
139 269 : if ( !aDocMediaType.isEmpty() )
140 : {
141 488 : if ( aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_ASCII
142 173 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_WEB_ASCII
143 173 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_GLOBAL_ASCII
144 173 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DRAWING_ASCII
145 172 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_PRESENTATION_ASCII
146 163 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_SPREADSHEET_ASCII
147 106 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_CHART_ASCII
148 106 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DATABASE_ASCII
149 4 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_FORMULA_ASCII
150 4 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_TEMPLATE_ASCII
151 0 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_TEXT_GLOBAL_TEMPLATE_ASCII
152 0 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_DRAWING_TEMPLATE_ASCII
153 0 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_PRESENTATION_TEMPLATE_ASCII
154 0 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_SPREADSHEET_TEMPLATE_ASCII
155 0 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_CHART_TEMPLATE_ASCII
156 244 : || aDocMediaType == MIMETYPE_OASIS_OPENDOCUMENT_FORMULA_TEMPLATE_ASCII )
157 :
158 : {
159 : // oasis format
160 : pRootAttrList->AddAttribute ( ATTRIBUTE_XMLNS,
161 : sCdataAttribute,
162 244 : MANIFEST_OASIS_NAMESPACE );
163 244 : bAcceptNonemptyVersion = true;
164 244 : if ( aDocVersion.compareTo( ODFVER_012_TEXT ) >= 0 )
165 : {
166 : // this is ODF12 generation, let encrypted streams contain start-key-generation entry
167 240 : bStoreStartKeyGeneration = true;
168 240 : pRootAttrList->AddAttribute ( sVersionAttribute, sCdataAttribute, aDocVersion );
169 : }
170 : }
171 : else
172 : {
173 : // even if it is no SO6 format the namespace must be specified
174 : // thus SO6 format is used as default one
175 : pRootAttrList->AddAttribute ( ATTRIBUTE_XMLNS,
176 : sCdataAttribute,
177 0 : MANIFEST_NAMESPACE );
178 :
179 0 : bProvideDTD = true;
180 : }
181 : }
182 :
183 538 : uno::Reference < xml::sax::XAttributeList > xRootAttrList (pRootAttrList);
184 :
185 269 : xHandler->startDocument();
186 538 : uno::Reference < xml::sax::XExtendedDocumentHandler > xExtHandler ( xHandler, uno::UNO_QUERY );
187 269 : if ( xExtHandler.is() && bProvideDTD )
188 : {
189 0 : OUString aDocType ( MANIFEST_DOCTYPE );
190 0 : xExtHandler->unknown ( aDocType );
191 0 : xHandler->ignorableWhitespace ( sWhiteSpace );
192 : }
193 269 : xHandler->startElement( sManifestElement, xRootAttrList );
194 :
195 1769 : for (sal_uInt32 i = 0 ; i < nManLength ; i++)
196 : {
197 1500 : ::comphelper::AttributeList *pAttrList = new ::comphelper::AttributeList;
198 1500 : const beans::PropertyValue *pValue = pSequence[i].getConstArray();
199 1500 : OUString aString;
200 1500 : const uno::Any *pVector = NULL, *pSalt = NULL, *pIterationCount = NULL, *pDigest = NULL, *pDigestAlg = NULL, *pEncryptAlg = NULL, *pStartKeyAlg = NULL, *pDerivedKeySize = NULL;
201 6045 : for (sal_uInt32 j = 0, nNum = pSequence[i].getLength(); j < nNum; j++, pValue++)
202 : {
203 4545 : if (pValue->Name.equals (sMediaTypeProperty) )
204 : {
205 1500 : pValue->Value >>= aString;
206 1500 : pAttrList->AddAttribute ( sMediaTypeAttribute, sCdataAttribute, aString );
207 : }
208 3045 : else if (pValue->Name.equals (sVersionProperty) )
209 : {
210 1500 : pValue->Value >>= aString;
211 : // the version is stored only if it is not empty
212 1500 : if ( bAcceptNonemptyVersion && !aString.isEmpty() )
213 243 : pAttrList->AddAttribute ( sVersionAttribute, sCdataAttribute, aString );
214 : }
215 1545 : else if (pValue->Name.equals (sFullPathProperty) )
216 : {
217 1500 : pValue->Value >>= aString;
218 1500 : pAttrList->AddAttribute ( sFullPathAttribute, sCdataAttribute, aString );
219 : }
220 45 : else if (pValue->Name.equals (sSizeProperty) )
221 : {
222 5 : sal_Int64 nSize = 0;
223 5 : pValue->Value >>= nSize;
224 5 : OUStringBuffer aBuffer;
225 5 : aBuffer.append ( nSize );
226 5 : pAttrList->AddAttribute ( sSizeAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
227 : }
228 40 : else if (pValue->Name.equals (sInitialisationVectorProperty) )
229 5 : pVector = &pValue->Value;
230 35 : else if (pValue->Name.equals (sSaltProperty) )
231 5 : pSalt = &pValue->Value;
232 30 : else if (pValue->Name.equals (sIterationCountProperty) )
233 5 : pIterationCount = &pValue->Value;
234 25 : else if (pValue->Name.equals ( sDigestProperty ) )
235 5 : pDigest = &pValue->Value;
236 20 : else if (pValue->Name.equals ( sDigestAlgProperty ) )
237 5 : pDigestAlg = &pValue->Value;
238 15 : else if (pValue->Name.equals ( sEncryptionAlgProperty ) )
239 5 : pEncryptAlg = &pValue->Value;
240 10 : else if (pValue->Name.equals ( sStartKeyAlgProperty ) )
241 5 : pStartKeyAlg = &pValue->Value;
242 5 : else if (pValue->Name.equals ( sDerivedKeySizeProperty ) )
243 5 : pDerivedKeySize = &pValue->Value;
244 : }
245 :
246 1500 : xHandler->ignorableWhitespace ( sWhiteSpace );
247 3000 : uno::Reference < xml::sax::XAttributeList > xAttrList ( pAttrList );
248 1500 : xHandler->startElement( sFileEntryElement , xAttrList);
249 1500 : if ( pVector && pSalt && pIterationCount && pDigest && pDigestAlg && pEncryptAlg && pStartKeyAlg && pDerivedKeySize )
250 : {
251 : // ==== Encryption Data
252 5 : ::comphelper::AttributeList * pNewAttrList = new ::comphelper::AttributeList;
253 5 : uno::Reference < xml::sax::XAttributeList > xNewAttrList (pNewAttrList);
254 10 : OUStringBuffer aBuffer;
255 10 : uno::Sequence < sal_Int8 > aSequence;
256 :
257 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
258 :
259 : // ==== Digest
260 10 : OUString sChecksumType;
261 5 : sal_Int32 nDigestAlgID = 0;
262 5 : *pDigestAlg >>= nDigestAlgID;
263 5 : if ( nDigestAlgID == xml::crypto::DigestID::SHA256_1K )
264 5 : sChecksumType = sSHA256_1k_URL;
265 0 : else if ( nDigestAlgID == xml::crypto::DigestID::SHA1_1K )
266 0 : sChecksumType = sSHA1_1k_Name;
267 : else
268 0 : throw uno::RuntimeException( THROW_WHERE "Unexpected digest algorithm is provided!" );
269 :
270 5 : pNewAttrList->AddAttribute ( sChecksumTypeAttribute, sCdataAttribute, sChecksumType );
271 5 : *pDigest >>= aSequence;
272 5 : ::sax::Converter::encodeBase64(aBuffer, aSequence);
273 5 : pNewAttrList->AddAttribute ( sChecksumAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
274 :
275 5 : xHandler->startElement( sEncryptionDataElement , xNewAttrList);
276 :
277 : // ==== Algorithm
278 5 : pNewAttrList = new ::comphelper::AttributeList;
279 5 : xNewAttrList = pNewAttrList;
280 :
281 5 : sal_Int32 nEncAlgID = 0;
282 5 : sal_Int32 nDerivedKeySize = 0;
283 5 : *pEncryptAlg >>= nEncAlgID;
284 5 : *pDerivedKeySize >>= nDerivedKeySize;
285 :
286 10 : OUString sEncAlgName;
287 5 : if ( nEncAlgID == xml::crypto::CipherID::AES_CBC_W3C_PADDING )
288 : {
289 : OSL_ENSURE( nDerivedKeySize, "Unexpected key size is provided!" );
290 5 : if ( nDerivedKeySize != 32 )
291 0 : throw uno::RuntimeException( THROW_WHERE "Unexpected key size is provided!" );
292 :
293 5 : sEncAlgName = sAES256_URL;
294 : }
295 0 : else if ( nEncAlgID == xml::crypto::CipherID::BLOWFISH_CFB_8 )
296 : {
297 0 : sEncAlgName = sBlowfish_Name;
298 : }
299 : else
300 0 : throw uno::RuntimeException( THROW_WHERE "Unexpected encryption algorithm is provided!" );
301 :
302 5 : pNewAttrList->AddAttribute ( sAlgorithmNameAttribute, sCdataAttribute, sEncAlgName );
303 :
304 5 : *pVector >>= aSequence;
305 5 : ::sax::Converter::encodeBase64(aBuffer, aSequence);
306 5 : pNewAttrList->AddAttribute ( sInitialisationVectorAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
307 :
308 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
309 5 : xHandler->startElement( sAlgorithmElement , xNewAttrList);
310 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
311 5 : xHandler->endElement( sAlgorithmElement );
312 :
313 : // ==== Key Derivation
314 5 : pNewAttrList = new ::comphelper::AttributeList;
315 5 : xNewAttrList = pNewAttrList;
316 :
317 5 : pNewAttrList->AddAttribute ( sKeyDerivationNameAttribute, sCdataAttribute, sPBKDF2_Name );
318 :
319 5 : if ( bStoreStartKeyGeneration )
320 : {
321 5 : aBuffer.append( nDerivedKeySize );
322 5 : pNewAttrList->AddAttribute ( sKeySizeAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
323 : }
324 :
325 5 : sal_Int32 nCount = 0;
326 5 : *pIterationCount >>= nCount;
327 5 : aBuffer.append (nCount);
328 5 : pNewAttrList->AddAttribute ( sIterationCountAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
329 :
330 5 : *pSalt >>= aSequence;
331 5 : ::sax::Converter::encodeBase64(aBuffer, aSequence);
332 5 : pNewAttrList->AddAttribute ( sSaltAttribute, sCdataAttribute, aBuffer.makeStringAndClear() );
333 :
334 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
335 5 : xHandler->startElement( sKeyDerivationElement , xNewAttrList);
336 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
337 5 : xHandler->endElement( sKeyDerivationElement );
338 :
339 : // we have to store start-key-generation element as the last one to workaround the parsing problem
340 : // in OOo3.1 and older versions
341 5 : if ( bStoreStartKeyGeneration )
342 : {
343 : // ==== Start Key Generation
344 5 : pNewAttrList = new ::comphelper::AttributeList;
345 5 : xNewAttrList = pNewAttrList;
346 :
347 5 : OUString sStartKeyAlg;
348 10 : OUString sStartKeySize;
349 5 : sal_Int32 nStartKeyAlgID = 0;
350 5 : *pStartKeyAlg >>= nStartKeyAlgID;
351 5 : if ( nStartKeyAlgID == xml::crypto::DigestID::SHA256 )
352 : {
353 5 : sStartKeyAlg = sSHA256_URL;
354 5 : aBuffer.append( (sal_Int32)32 );
355 5 : sStartKeySize = aBuffer.makeStringAndClear();
356 : }
357 0 : else if ( nStartKeyAlgID == xml::crypto::DigestID::SHA1 )
358 : {
359 0 : sStartKeyAlg = sSHA1_Name;
360 0 : aBuffer.append( (sal_Int32)20 );
361 0 : sStartKeySize = aBuffer.makeStringAndClear();
362 : }
363 : else
364 0 : throw uno::RuntimeException( THROW_WHERE "Unexpected start key algorithm is provided!" );
365 :
366 5 : pNewAttrList->AddAttribute ( sStartKeyGenerationNameAttribute, sCdataAttribute, sStartKeyAlg );
367 5 : pNewAttrList->AddAttribute ( sKeySizeAttribute, sCdataAttribute, sStartKeySize );
368 :
369 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
370 5 : xHandler->startElement( sStartKeyGenerationElement , xNewAttrList);
371 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
372 10 : xHandler->endElement( sStartKeyGenerationElement );
373 : }
374 :
375 5 : xHandler->ignorableWhitespace ( sWhiteSpace );
376 10 : xHandler->endElement( sEncryptionDataElement );
377 : }
378 1500 : xHandler->ignorableWhitespace ( sWhiteSpace );
379 1500 : xHandler->endElement( sFileEntryElement );
380 1500 : }
381 269 : xHandler->ignorableWhitespace ( sWhiteSpace );
382 269 : xHandler->endElement( sManifestElement );
383 538 : xHandler->endDocument();
384 269 : }
385 :
386 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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