Line data Source code
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 :
21 : #include "filterdet.hxx"
22 : #include "inc/pdfihelper.hxx"
23 : #include "inc/pdfparse.hxx"
24 :
25 : #include <osl/diagnose.h>
26 : #include <osl/file.h>
27 : #include <osl/thread.h>
28 : #include <rtl/digest.h>
29 : #include <rtl/ref.hxx>
30 : #include <com/sun/star/uno/RuntimeException.hpp>
31 : #include <com/sun/star/io/XInputStream.hpp>
32 : #include <com/sun/star/io/XStream.hpp>
33 : #include <com/sun/star/io/XSeekable.hpp>
34 : #include <com/sun/star/io/TempFile.hpp>
35 :
36 : #include <boost/scoped_ptr.hpp>
37 : #include <string.h>
38 :
39 : using namespace com::sun::star;
40 :
41 : namespace pdfi
42 : {
43 :
44 : // TODO(T3): locking/thread safety
45 :
46 : class FileEmitContext : public pdfparse::EmitContext
47 : {
48 : private:
49 : oslFileHandle m_aReadHandle;
50 : unsigned int m_nReadLen;
51 : uno::Reference< io::XStream > m_xContextStream;
52 : uno::Reference< io::XSeekable > m_xSeek;
53 : uno::Reference< io::XOutputStream > m_xOut;
54 :
55 : public:
56 : FileEmitContext( const OUString& rOrigFile,
57 : const uno::Reference< uno::XComponentContext >& xContext,
58 : const pdfparse::PDFContainer* pTop );
59 : virtual ~FileEmitContext();
60 :
61 : virtual bool write( const void* pBuf, unsigned int nLen ) SAL_OVERRIDE;
62 : virtual unsigned int getCurPos() SAL_OVERRIDE;
63 : virtual bool copyOrigBytes( unsigned int nOrigOffset, unsigned int nLen ) SAL_OVERRIDE;
64 : virtual unsigned int readOrigBytes( unsigned int nOrigOffset, unsigned int nLen, void* pBuf ) SAL_OVERRIDE;
65 :
66 0 : const uno::Reference< io::XStream >& getContextStream() const { return m_xContextStream; }
67 : };
68 :
69 0 : FileEmitContext::FileEmitContext( const OUString& rOrigFile,
70 : const uno::Reference< uno::XComponentContext >& xContext,
71 : const pdfparse::PDFContainer* pTop ) :
72 : pdfparse::EmitContext( pTop ),
73 : m_aReadHandle(NULL),
74 : m_nReadLen(0),
75 : m_xContextStream(),
76 : m_xSeek(),
77 0 : m_xOut()
78 : {
79 0 : m_xContextStream = uno::Reference< io::XStream >(
80 0 : io::TempFile::create(xContext), uno::UNO_QUERY_THROW );
81 0 : m_xOut = m_xContextStream->getOutputStream();
82 0 : m_xSeek = uno::Reference<io::XSeekable>(m_xOut, uno::UNO_QUERY_THROW );
83 :
84 0 : oslFileError aErr = osl_File_E_None;
85 0 : if( (aErr=osl_openFile( rOrigFile.pData,
86 : &m_aReadHandle,
87 0 : osl_File_OpenFlag_Read )) == osl_File_E_None )
88 : {
89 0 : if( (aErr=osl_setFilePos( m_aReadHandle,
90 : osl_Pos_End,
91 0 : 0 )) == osl_File_E_None )
92 : {
93 0 : sal_uInt64 nFileSize = 0;
94 0 : if( (aErr=osl_getFilePos( m_aReadHandle,
95 0 : &nFileSize )) == osl_File_E_None )
96 : {
97 0 : m_nReadLen = static_cast<unsigned int>(nFileSize);
98 : }
99 : }
100 0 : if( aErr != osl_File_E_None )
101 : {
102 0 : osl_closeFile( m_aReadHandle );
103 0 : m_aReadHandle = NULL;
104 : }
105 : }
106 0 : m_bDeflate = true;
107 0 : }
108 :
109 0 : FileEmitContext::~FileEmitContext()
110 : {
111 0 : if( m_aReadHandle )
112 0 : osl_closeFile( m_aReadHandle );
113 0 : }
114 :
115 0 : bool FileEmitContext::write( const void* pBuf, unsigned int nLen )
116 : {
117 0 : if( ! m_xOut.is() )
118 0 : return false;
119 :
120 0 : uno::Sequence< sal_Int8 > aSeq( nLen );
121 0 : memcpy( aSeq.getArray(), pBuf, nLen );
122 0 : m_xOut->writeBytes( aSeq );
123 0 : return true;
124 : }
125 :
126 0 : unsigned int FileEmitContext::getCurPos()
127 : {
128 0 : unsigned int nPos = 0;
129 0 : if( m_xSeek.is() )
130 : {
131 0 : nPos = static_cast<unsigned int>( m_xSeek->getPosition() );
132 : }
133 0 : return nPos;
134 : }
135 :
136 0 : bool FileEmitContext::copyOrigBytes( unsigned int nOrigOffset, unsigned int nLen )
137 : {
138 0 : if( nOrigOffset + nLen > m_nReadLen )
139 0 : return false;
140 :
141 0 : if( osl_setFilePos( m_aReadHandle, osl_Pos_Absolut, nOrigOffset ) != osl_File_E_None )
142 0 : return false;
143 :
144 0 : uno::Sequence< sal_Int8 > aSeq( nLen );
145 :
146 0 : sal_uInt64 nBytesRead = 0;
147 0 : if( osl_readFile( m_aReadHandle,
148 0 : aSeq.getArray(),
149 : nLen,
150 0 : &nBytesRead ) != osl_File_E_None
151 0 : || nBytesRead != static_cast<sal_uInt64>(nLen) )
152 : {
153 0 : return false;
154 : }
155 :
156 0 : m_xOut->writeBytes( aSeq );
157 0 : return true;
158 : }
159 :
160 0 : unsigned int FileEmitContext::readOrigBytes( unsigned int nOrigOffset, unsigned int nLen, void* pBuf )
161 : {
162 0 : if( nOrigOffset + nLen > m_nReadLen )
163 0 : return 0;
164 :
165 0 : if( osl_setFilePos( m_aReadHandle,
166 : osl_Pos_Absolut,
167 0 : nOrigOffset ) != osl_File_E_None )
168 : {
169 0 : return 0;
170 : }
171 :
172 0 : sal_uInt64 nBytesRead = 0;
173 0 : if( osl_readFile( m_aReadHandle,
174 : pBuf,
175 : nLen,
176 0 : &nBytesRead ) != osl_File_E_None )
177 : {
178 0 : return 0;
179 : }
180 0 : return static_cast<unsigned int>(nBytesRead);
181 : }
182 :
183 :
184 :
185 :
186 :
187 0 : PDFDetector::PDFDetector( const uno::Reference< uno::XComponentContext >& xContext) :
188 : PDFDetectorBase( m_aMutex ),
189 0 : m_xContext( xContext )
190 0 : {}
191 :
192 : // XExtendedFilterDetection
193 0 : OUString SAL_CALL PDFDetector::detect( uno::Sequence< beans::PropertyValue >& rFilterData ) throw( uno::RuntimeException, std::exception )
194 : {
195 0 : osl::MutexGuard const guard( m_aMutex );
196 0 : bool bSuccess = false;
197 :
198 : // get the InputStream carrying the PDF content
199 0 : uno::Reference< io::XInputStream > xInput;
200 0 : uno::Reference< io::XStream > xEmbedStream;
201 0 : OUString aOutFilterName, aOutTypeName;
202 0 : OUString aURL;
203 0 : OUString aPwd;
204 0 : const beans::PropertyValue* pAttribs = rFilterData.getConstArray();
205 0 : sal_Int32 nAttribs = rFilterData.getLength();
206 0 : sal_Int32 nFilterNamePos = -1;
207 0 : sal_Int32 nPwdPos = -1;
208 0 : for( sal_Int32 i = 0; i < nAttribs; i++ )
209 : {
210 : #if OSL_DEBUG_LEVEL > 1
211 : OUString aVal( "<no string>" );
212 : pAttribs[i].Value >>= aVal;
213 : OSL_TRACE( "doDetection: Attrib: %s = %s\n",
214 : OUStringToOString( pAttribs[i].Name, RTL_TEXTENCODING_UTF8 ).getStr(),
215 : OUStringToOString( aVal, RTL_TEXTENCODING_UTF8 ).getStr() );
216 : #endif
217 0 : if ( pAttribs[i].Name == "InputStream" )
218 0 : pAttribs[i].Value >>= xInput;
219 0 : else if ( pAttribs[i].Name == "URL" )
220 0 : pAttribs[i].Value >>= aURL;
221 0 : else if ( pAttribs[i].Name == "FilterName" )
222 0 : nFilterNamePos = i;
223 0 : else if ( pAttribs[i].Name == "Password" )
224 : {
225 0 : nPwdPos = i;
226 0 : pAttribs[i].Value >>= aPwd;
227 : }
228 : }
229 0 : if( xInput.is() )
230 : {
231 0 : uno::Reference< io::XSeekable > xSeek( xInput, uno::UNO_QUERY );
232 0 : if( xSeek.is() )
233 0 : xSeek->seek( 0 );
234 : // read the first 1024 byte (see PDF reference implementation note 12)
235 0 : const sal_Int32 nHeaderSize = 1024;
236 0 : uno::Sequence< sal_Int8 > aBuf( nHeaderSize );
237 0 : sal_uInt64 nBytes = 0;
238 0 : nBytes = xInput->readBytes( aBuf, nHeaderSize );
239 0 : if( nBytes > 5 )
240 : {
241 0 : const sal_Int8* pBytes = aBuf.getConstArray();
242 0 : for( unsigned int i = 0; i < nBytes-5; i++ )
243 : {
244 0 : if( pBytes[i] == '%' &&
245 0 : pBytes[i+1] == 'P' &&
246 0 : pBytes[i+2] == 'D' &&
247 0 : pBytes[i+3] == 'F' &&
248 0 : pBytes[i+4] == '-' )
249 : {
250 0 : bSuccess = true;
251 0 : break;
252 : }
253 : }
254 : }
255 :
256 : // check for hybrid PDF
257 0 : oslFileHandle aFile = NULL;
258 0 : if( bSuccess &&
259 0 : ( aURL.isEmpty() || !aURL.startsWith( "file:" ) )
260 : )
261 : {
262 0 : sal_uInt64 nWritten = 0;
263 0 : if( osl_createTempFile( NULL, &aFile, &aURL.pData ) != osl_File_E_None )
264 : {
265 0 : bSuccess = false;
266 : }
267 : else
268 : {
269 : #if OSL_DEBUG_LEVEL > 1
270 : OSL_TRACE( "created temp file %s\n",
271 : OUStringToOString( aURL, RTL_TEXTENCODING_UTF8 ).getStr() );
272 : #endif
273 0 : osl_writeFile( aFile, aBuf.getConstArray(), nBytes, &nWritten );
274 :
275 : OSL_ENSURE( nWritten == nBytes, "writing of header bytes failed" );
276 :
277 0 : if( nWritten == nBytes )
278 : {
279 0 : const sal_uInt32 nBufSize = 4096;
280 0 : aBuf = uno::Sequence<sal_Int8>(nBufSize);
281 : // copy the bytes
282 0 : do
283 : {
284 0 : nBytes = xInput->readBytes( aBuf, nBufSize );
285 0 : if( nBytes > 0 )
286 : {
287 0 : osl_writeFile( aFile, aBuf.getConstArray(), nBytes, &nWritten );
288 0 : if( nWritten != nBytes )
289 : {
290 0 : bSuccess = false;
291 0 : break;
292 : }
293 : }
294 : } while( nBytes == nBufSize );
295 : }
296 : }
297 0 : osl_closeFile( aFile );
298 : }
299 0 : OUString aEmbedMimetype;
300 0 : xEmbedStream = getAdditionalStream( aURL, aEmbedMimetype, aPwd, m_xContext, rFilterData, false );
301 0 : if( aFile )
302 0 : osl_removeFile( aURL.pData );
303 0 : if( !aEmbedMimetype.isEmpty() )
304 : {
305 0 : if( aEmbedMimetype == "application/vnd.oasis.opendocument.text"
306 0 : || aEmbedMimetype == "application/vnd.oasis.opendocument.text-master" )
307 0 : aOutFilterName = "writer_pdf_addstream_import";
308 0 : else if ( aEmbedMimetype == "application/vnd.oasis.opendocument.presentation" )
309 0 : aOutFilterName = "impress_pdf_addstream_import";
310 0 : else if( aEmbedMimetype == "application/vnd.oasis.opendocument.graphics"
311 0 : || aEmbedMimetype == "application/vnd.oasis.opendocument.drawing" )
312 0 : aOutFilterName = "draw_pdf_addstream_import";
313 0 : else if ( aEmbedMimetype == "application/vnd.oasis.opendocument.spreadsheet" )
314 0 : aOutFilterName = "calc_pdf_addstream_import";
315 0 : }
316 : }
317 :
318 0 : if( bSuccess )
319 : {
320 0 : if( !aOutFilterName.isEmpty() )
321 : {
322 0 : if( nFilterNamePos == -1 )
323 : {
324 0 : nFilterNamePos = nAttribs;
325 0 : rFilterData.realloc( ++nAttribs );
326 0 : rFilterData[ nFilterNamePos ].Name =
327 0 : OUString( "FilterName" );
328 : }
329 0 : aOutTypeName = "pdf_Portable_Document_Format";
330 :
331 : OSL_TRACE( "setting filter name %s, input stream %s\n",
332 : OUStringToOString( aOutFilterName, RTL_TEXTENCODING_UTF8 ).getStr(),
333 : xEmbedStream.is() ? "present" : "not present" );
334 :
335 0 : rFilterData[nFilterNamePos].Value <<= aOutFilterName;
336 0 : if( xEmbedStream.is() )
337 : {
338 0 : rFilterData.realloc( ++nAttribs );
339 0 : rFilterData[nAttribs-1].Name = "EmbeddedSubstream";
340 0 : rFilterData[nAttribs-1].Value <<= xEmbedStream;
341 : }
342 0 : if( !aPwd.isEmpty() )
343 : {
344 0 : if( nPwdPos == -1 )
345 : {
346 0 : nPwdPos = nAttribs;
347 0 : rFilterData.realloc( ++nAttribs );
348 0 : rFilterData[ nPwdPos ].Name = "Password";
349 : }
350 0 : rFilterData[ nPwdPos ].Value <<= aPwd;
351 : }
352 : }
353 : else
354 : {
355 0 : if( nFilterNamePos == -1 )
356 : {
357 0 : nFilterNamePos = nAttribs;
358 0 : rFilterData.realloc( ++nAttribs );
359 0 : rFilterData[ nFilterNamePos ].Name = "FilterName";
360 : }
361 :
362 0 : const sal_Int32 nDocumentType = 0; //const sal_Int32 nDocumentType = queryDocumentTypeDialog(m_xContext,aURL);
363 : if( nDocumentType < 0 )
364 : {
365 : return OUString();
366 : }
367 : else switch( nDocumentType )
368 : {
369 : case 0:
370 0 : rFilterData[nFilterNamePos].Value <<= OUString( "draw_pdf_import" );
371 0 : break;
372 :
373 : case 1:
374 : rFilterData[nFilterNamePos].Value <<= OUString( "impress_pdf_import" );
375 : break;
376 :
377 : case 2:
378 : rFilterData[nFilterNamePos].Value <<= OUString( "writer_pdf_import" );
379 : break;
380 :
381 : default:
382 : OSL_FAIL("Unexpected case");
383 : }
384 :
385 0 : aOutTypeName = "pdf_Portable_Document_Format";
386 : }
387 : }
388 :
389 0 : return aOutTypeName;
390 : }
391 :
392 0 : bool checkDocChecksum( const OUString& rInPDFFileURL,
393 : sal_uInt32 nBytes,
394 : const OUString& rChkSum )
395 : {
396 0 : bool bRet = false;
397 0 : if( rChkSum.getLength() != 2* RTL_DIGEST_LENGTH_MD5 )
398 : {
399 : OSL_TRACE( "checksum of length %d, expected %d\n",
400 : rChkSum.getLength(), 2*RTL_DIGEST_LENGTH_MD5 );
401 0 : return false;
402 : }
403 :
404 : // prepare checksum to test
405 : sal_uInt8 nTestChecksum[ RTL_DIGEST_LENGTH_MD5 ];
406 0 : const sal_Unicode* pChar = rChkSum.getStr();
407 0 : for( unsigned int i = 0; i < RTL_DIGEST_LENGTH_MD5; i++ )
408 : {
409 0 : sal_uInt8 nByte = sal_uInt8( ( (*pChar >= '0' && *pChar <= '9') ? *pChar - '0' :
410 0 : ( (*pChar >= 'A' && *pChar <= 'F') ? *pChar - 'A' + 10 :
411 0 : ( (*pChar >= 'a' && *pChar <= 'f') ? *pChar - 'a' + 10 :
412 0 : 0 ) ) ) );
413 0 : nByte <<= 4;
414 0 : pChar++;
415 0 : nByte |= ( (*pChar >= '0' && *pChar <= '9') ? *pChar - '0' :
416 0 : ( (*pChar >= 'A' && *pChar <= 'F') ? *pChar - 'A' + 10 :
417 0 : ( (*pChar >= 'a' && *pChar <= 'f') ? *pChar - 'a' + 10 :
418 0 : 0 ) ) );
419 0 : pChar++;
420 0 : nTestChecksum[i] = nByte;
421 : }
422 :
423 : // open file and calculate actual checksum up to index nBytes
424 : sal_uInt8 nActualChecksum[ RTL_DIGEST_LENGTH_MD5 ];
425 0 : memset( nActualChecksum, 0, sizeof(nActualChecksum) );
426 0 : rtlDigest aActualDigest = rtl_digest_createMD5();
427 0 : oslFileHandle aRead = NULL;
428 0 : oslFileError aErr = osl_File_E_None;
429 0 : if( (aErr = osl_openFile(rInPDFFileURL.pData,
430 : &aRead,
431 0 : osl_File_OpenFlag_Read )) == osl_File_E_None )
432 : {
433 : sal_Int8 aBuf[4096];
434 0 : sal_uInt32 nCur = 0;
435 0 : sal_uInt64 nBytesRead = 0;
436 0 : while( nCur < nBytes )
437 : {
438 0 : sal_uInt32 nPass = (nBytes - nCur) > sizeof( aBuf ) ? sizeof( aBuf ) : nBytes - nCur;
439 0 : if( (aErr = osl_readFile( aRead, aBuf, nPass, &nBytesRead)) != osl_File_E_None
440 0 : || nBytesRead == 0 )
441 : {
442 0 : break;
443 : }
444 0 : nPass = static_cast<sal_uInt32>(nBytesRead);
445 0 : nCur += nPass;
446 0 : rtl_digest_updateMD5( aActualDigest, aBuf, nPass );
447 : }
448 0 : rtl_digest_getMD5( aActualDigest, nActualChecksum, sizeof(nActualChecksum) );
449 0 : osl_closeFile( aRead );
450 : }
451 0 : rtl_digest_destroyMD5( aActualDigest );
452 :
453 : // compare the contents
454 0 : bRet = (0 == memcmp( nActualChecksum, nTestChecksum, sizeof( nActualChecksum ) ));
455 : #if OSL_DEBUG_LEVEL > 1
456 : OSL_TRACE( "test checksum: " );
457 : for( unsigned int i = 0; i < sizeof(nTestChecksum); i++ )
458 : OSL_TRACE( "%.2X", int(nTestChecksum[i]) );
459 : OSL_TRACE( "\n" );
460 : OSL_TRACE( "file checksum: " );
461 : for( unsigned int i = 0; i < sizeof(nActualChecksum); i++ )
462 : OSL_TRACE( "%.2X", int(nActualChecksum[i]) );
463 : OSL_TRACE( "\n" );
464 : #endif
465 0 : return bRet;
466 : }
467 :
468 0 : uno::Reference< io::XStream > getAdditionalStream( const OUString& rInPDFFileURL,
469 : OUString& rOutMimetype,
470 : OUString& io_rPwd,
471 : const uno::Reference<uno::XComponentContext>& xContext,
472 : const uno::Sequence<beans::PropertyValue>& rFilterData,
473 : bool bMayUseUI )
474 : {
475 0 : uno::Reference< io::XStream > xEmbed;
476 0 : OString aPDFFile;
477 0 : OUString aSysUPath;
478 0 : if( osl_getSystemPathFromFileURL( rInPDFFileURL.pData, &aSysUPath.pData ) != osl_File_E_None )
479 0 : return xEmbed;
480 0 : aPDFFile = OUStringToOString( aSysUPath, osl_getThreadTextEncoding() );
481 :
482 0 : pdfparse::PDFReader aParser;
483 0 : boost::scoped_ptr<pdfparse::PDFEntry> pEntry( aParser.read( aPDFFile.getStr() ));
484 0 : if( pEntry )
485 : {
486 0 : pdfparse::PDFFile* pPDFFile = dynamic_cast<pdfparse::PDFFile*>(pEntry.get());
487 0 : if( pPDFFile )
488 : {
489 0 : unsigned int nElements = pPDFFile->m_aSubElements.size();
490 0 : while( nElements-- > 0 )
491 : {
492 0 : pdfparse::PDFTrailer* pTrailer = dynamic_cast<pdfparse::PDFTrailer*>(pPDFFile->m_aSubElements[nElements]);
493 0 : if( pTrailer && pTrailer->m_pDict )
494 : {
495 : // search document checksum entry
496 : boost::unordered_map< OString,
497 : pdfparse::PDFEntry*,
498 0 : OStringHash >::iterator chk;
499 0 : chk = pTrailer->m_pDict->m_aMap.find( "DocChecksum" );
500 0 : if( chk == pTrailer->m_pDict->m_aMap.end() )
501 : {
502 : OSL_TRACE( "no DocChecksum entry" );
503 0 : continue;
504 : }
505 0 : pdfparse::PDFName* pChkSumName = dynamic_cast<pdfparse::PDFName*>(chk->second);
506 0 : if( pChkSumName == NULL )
507 : {
508 : OSL_TRACE( "no name for DocChecksum entry" );
509 0 : continue;
510 : }
511 :
512 : // search for AdditionalStreams entry
513 : boost::unordered_map< OString,
514 : pdfparse::PDFEntry*,
515 0 : OStringHash >::iterator add_stream;
516 0 : add_stream = pTrailer->m_pDict->m_aMap.find( "AdditionalStreams" );
517 0 : if( add_stream == pTrailer->m_pDict->m_aMap.end() )
518 : {
519 : OSL_TRACE( "no AdditionalStreams entry" );
520 0 : continue;
521 : }
522 0 : pdfparse::PDFArray* pStreams = dynamic_cast<pdfparse::PDFArray*>(add_stream->second);
523 0 : if( ! pStreams || pStreams->m_aSubElements.size() < 2 )
524 : {
525 : OSL_TRACE( "AdditionalStreams array too small" );
526 0 : continue;
527 : }
528 :
529 : // check checksum
530 0 : OUString aChkSum = pChkSumName->getFilteredName();
531 0 : if( ! checkDocChecksum( rInPDFFileURL, pTrailer->m_nOffset, aChkSum ) )
532 0 : continue;
533 :
534 : // extract addstream and mimetype
535 0 : pdfparse::PDFName* pMimeType = dynamic_cast<pdfparse::PDFName*>(pStreams->m_aSubElements[0]);
536 0 : pdfparse::PDFObjectRef* pStreamRef = dynamic_cast<pdfparse::PDFObjectRef*>(pStreams->m_aSubElements[1]);
537 :
538 : OSL_ENSURE( pMimeType, "error: no mimetype element\n" );
539 : OSL_ENSURE( pStreamRef, "error: no stream ref element\n" );
540 :
541 0 : if( pMimeType && pStreamRef )
542 : {
543 0 : pdfparse::PDFObject* pObject = pPDFFile->findObject( pStreamRef->m_nNumber, pStreamRef->m_nGeneration );
544 : OSL_ENSURE( pObject, "object not found\n" );
545 0 : if( pObject )
546 : {
547 0 : if( pPDFFile->isEncrypted() )
548 : {
549 0 : bool bAuthenticated = false;
550 0 : if( !io_rPwd.isEmpty() )
551 : {
552 : OString aIsoPwd = OUStringToOString( io_rPwd,
553 0 : RTL_TEXTENCODING_ISO_8859_1 );
554 0 : bAuthenticated = pPDFFile->setupDecryptionData( aIsoPwd.getStr() );
555 : }
556 0 : if( ! bAuthenticated )
557 : {
558 0 : const beans::PropertyValue* pAttribs = rFilterData.getConstArray();
559 0 : sal_Int32 nAttribs = rFilterData.getLength();
560 0 : uno::Reference< task::XInteractionHandler > xIntHdl;
561 0 : for( sal_Int32 i = 0; i < nAttribs; i++ )
562 : {
563 0 : if ( pAttribs[i].Name == "InteractionHandler" )
564 0 : pAttribs[i].Value >>= xIntHdl;
565 : }
566 0 : if( ! bMayUseUI || ! xIntHdl.is() )
567 : {
568 0 : rOutMimetype = pMimeType->getFilteredName();
569 0 : xEmbed.clear();
570 0 : break;
571 : }
572 :
573 0 : OUString aDocName( rInPDFFileURL.copy( rInPDFFileURL.lastIndexOf( '/' )+1 ) );
574 :
575 0 : bool bEntered = false;
576 0 : do
577 : {
578 0 : bEntered = getPassword( xIntHdl, io_rPwd, ! bEntered, aDocName );
579 : OString aIsoPwd = OUStringToOString( io_rPwd,
580 0 : RTL_TEXTENCODING_ISO_8859_1 );
581 0 : bAuthenticated = pPDFFile->setupDecryptionData( aIsoPwd.getStr() );
582 0 : } while( bEntered && ! bAuthenticated );
583 : }
584 :
585 : OSL_TRACE( "password: %s", bAuthenticated ? "matches" : "does not match" );
586 0 : if( ! bAuthenticated )
587 0 : continue;
588 : }
589 0 : rOutMimetype = pMimeType->getFilteredName();
590 : FileEmitContext aContext( rInPDFFileURL,
591 : xContext,
592 0 : pPDFFile );
593 0 : aContext.m_bDecrypt = pPDFFile->isEncrypted();
594 0 : pObject->writeStream( aContext, pPDFFile );
595 0 : xEmbed = aContext.getContextStream();
596 0 : break; // success
597 : }
598 0 : }
599 : }
600 : }
601 : }
602 : }
603 :
604 : OSL_TRACE( "extracted add stream: mimetype %s\n",
605 : OUStringToOString( rOutMimetype,
606 : RTL_TEXTENCODING_UTF8 ).getStr());
607 0 : return xEmbed;
608 : }
609 :
610 : }
611 :
612 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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