diff options
Diffstat (limited to 'vcl/source/gdi/pdfwriter_impl.cxx')
| -rw-r--r-- | vcl/source/gdi/pdfwriter_impl.cxx | 610 |
1 files changed, 192 insertions, 418 deletions
diff --git a/vcl/source/gdi/pdfwriter_impl.cxx b/vcl/source/gdi/pdfwriter_impl.cxx index 5d75c829da8a..325ccef1c3a6 100644 --- a/vcl/source/gdi/pdfwriter_impl.cxx +++ b/vcl/source/gdi/pdfwriter_impl.cxx @@ -113,12 +113,10 @@ void doTestCode() aContext.Version = PDFWriter::PDF_1_4; aContext.Tagged = true; aContext.InitialPage = 2; + aContext.DocumentInfo.Title = OUString( RTL_CONSTASCII_USTRINGPARAM( "PDF export test document" ) ); + aContext.DocumentInfo.Producer = OUString( RTL_CONSTASCII_USTRINGPARAM( "VCL" ) ); PDFWriter aWriter( aContext ); - PDFDocInfo aDocInfo; - aDocInfo.Title = OUString( RTL_CONSTASCII_USTRINGPARAM( "PDF export test document" ) ); - aDocInfo.Producer = OUString( RTL_CONSTASCII_USTRINGPARAM( "VCL" ) ); - aWriter.SetDocInfo( aDocInfo ); aWriter.NewPage( 595, 842 ); aWriter.BeginStructureElement( PDFWriter::Document ); // set duration of 3 sec for first page @@ -496,6 +494,12 @@ static inline double pixelToPoint( sal_Int32 px ) { return double(px)/fDivisor; static inline double pixelToPoint( double px ) { return px/fDivisor; } static inline sal_Int32 pointToPixel( double pt ) { return sal_Int32(pt*fDivisor); } +const sal_uInt8 PDFWriterImpl::s_nPadString[32] = +{ + 0x28, 0xBF, 0x4E, 0x5E, 0x4E, 0x75, 0x8A, 0x41, 0x64, 0x00, 0x4E, 0x56, 0xFF, 0xFA, 0x01, 0x08, + 0x2E, 0x2E, 0x00, 0xB6, 0xD0, 0x68, 0x3E, 0x80, 0x2F, 0x0C, 0xA9, 0xFE, 0x64, 0x53, 0x69, 0x7A +}; + static void appendHex( sal_Int8 nInt, OStringBuffer& rBuffer ) { static const sal_Char pHexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', @@ -1693,7 +1697,9 @@ void PDFWriterImpl::PDFPage::appendWaveLine( sal_Int32 nWidth, sal_Int32 nY, sal * class PDFWriterImpl */ -PDFWriterImpl::PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, PDFWriter& i_rOuterFace ) + PDFWriterImpl::PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, + const com::sun::star::uno::Reference< com::sun::star::beans::XMaterialHolder >& xEnc, + PDFWriter& i_rOuterFace) : m_pReferenceDevice( NULL ), m_aMapMode( MAP_POINT, Point(), Fraction( 1L, pointToPixel(1) ), Fraction( 1L, pointToPixel(1) ) ), @@ -1714,9 +1720,6 @@ PDFWriterImpl::PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, PDFWr m_aCipher( (rtlCipher)NULL ), m_aDigest( NULL ), m_bEncryptThisStream( false ), - m_aDocID( 32 ), - m_aCreationDateString( 64 ), - m_aCreationMetaDateString( 64 ), m_pEncryptionBuffer( NULL ), m_nEncryptionBufferSize( 0 ), m_bIsPDF_A1( false ), @@ -1759,14 +1762,37 @@ PDFWriterImpl::PDFWriterImpl( const PDFWriter::PDFWriterContext& rContext, PDFWr m_bOpen = true; -/* prepare the cypher engine, can be done in CTOR, free in DTOR */ + // setup DocInfo + setupDocInfo(); + /* prepare the cypher engine, can be done in CTOR, free in DTOR */ m_aCipher = rtl_cipher_createARCFOUR( rtl_Cipher_ModeStream ); m_aDigest = rtl_digest_createMD5(); -/* the size of the Codec default maximum */ + /* the size of the Codec default maximum */ checkEncryptionBufferSize( 0x4000 ); + if( xEnc.is() ) + prepareEncryption( xEnc ); + + if( m_aContext.Encryption.Encrypt() ) + { + // sanity check + if( m_aContext.Encryption.OValue.size() != ENCRYPTED_PWD_SIZE || + m_aContext.Encryption.UValue.size() != ENCRYPTED_PWD_SIZE || + m_aContext.Encryption.EncryptionKey.size() != MAXIMUM_RC4_KEY_LENGTH + ) + { + // the field lengths are invalid ? This was not setup by initEncryption. + // do not encrypt after all + m_aContext.Encryption.OValue.clear(); + m_aContext.Encryption.UValue.clear(); + OSL_ENSURE( 0, "encryption data failed sanity check, encryption disabled" ); + } + else // setup key lengths + m_nAccessPermissions = computeAccessPermissions( m_aContext.Encryption, m_nKeyLength, m_nRC4KeyLength ); + } + // write header OStringBuffer aBuffer( 20 ); aBuffer.append( "%PDF-" ); @@ -1812,139 +1838,138 @@ PDFWriterImpl::~PDFWriterImpl() rtl_freeMemory( m_pEncryptionBuffer ); } -void PDFWriterImpl::setDocInfo( const PDFDocInfo& rInfo ) +void PDFWriterImpl::setupDocInfo() { - m_aDocInfo.Title = rInfo.Title; - m_aDocInfo.Author = rInfo.Author; - m_aDocInfo.Subject = rInfo.Subject; - m_aDocInfo.Keywords = rInfo.Keywords; - m_aDocInfo.Creator = rInfo.Creator; - m_aDocInfo.Producer = rInfo.Producer; + std::vector< sal_uInt8 > aId; + computeDocumentIdentifier( aId, m_aContext.DocumentInfo, m_aCreationDateString, m_aCreationMetaDateString ); + if( m_aContext.Encryption.DocumentIdentifier.empty() ) + m_aContext.Encryption.DocumentIdentifier = aId; +} -//build the document id +void PDFWriterImpl::computeDocumentIdentifier( std::vector< sal_uInt8 >& o_rIdentifier, + const vcl::PDFWriter::PDFDocInfo& i_rDocInfo, + rtl::OString& o_rCString1, + rtl::OString& o_rCString2 + ) +{ + o_rIdentifier.clear(); + + //build the document id rtl::OString aInfoValuesOut; OStringBuffer aID( 1024 ); - if( m_aDocInfo.Title.Len() ) - appendUnicodeTextString( m_aDocInfo.Title, aID ); - if( m_aDocInfo.Author.Len() ) - appendUnicodeTextString( m_aDocInfo.Author, aID ); - if( m_aDocInfo.Subject.Len() ) - appendUnicodeTextString( m_aDocInfo.Subject, aID ); - if( m_aDocInfo.Keywords.Len() ) - appendUnicodeTextString( m_aDocInfo.Keywords, aID ); - if( m_aDocInfo.Creator.Len() ) - appendUnicodeTextString( m_aDocInfo.Creator, aID ); - if( m_aDocInfo.Producer.Len() ) - appendUnicodeTextString( m_aDocInfo.Producer, aID ); + if( i_rDocInfo.Title.Len() ) + appendUnicodeTextString( i_rDocInfo.Title, aID ); + if( i_rDocInfo.Author.Len() ) + appendUnicodeTextString( i_rDocInfo.Author, aID ); + if( i_rDocInfo.Subject.Len() ) + appendUnicodeTextString( i_rDocInfo.Subject, aID ); + if( i_rDocInfo.Keywords.Len() ) + appendUnicodeTextString( i_rDocInfo.Keywords, aID ); + if( i_rDocInfo.Creator.Len() ) + appendUnicodeTextString( i_rDocInfo.Creator, aID ); + if( i_rDocInfo.Producer.Len() ) + appendUnicodeTextString( i_rDocInfo.Producer, aID ); TimeValue aTVal, aGMT; oslDateTime aDT; osl_getSystemTime( &aGMT ); osl_getLocalTimeFromSystemTime( &aGMT, &aTVal ); osl_getDateTimeFromTimeValue( &aTVal, &aDT ); - m_aCreationDateString.append( "D:" ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/1000)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/100)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Year)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Month/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Month)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Day/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Day)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Hours/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Hours)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Minutes/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Minutes)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Seconds/10)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((aDT.Seconds)%10)) ); -//--> i59651, we fill the Metadata date string as well, if PDF/A is requested - if( m_bIsPDF_A1 ) - { -// according to ISO 19005-1:2005 6.7.3 the date is corrected for -// local time zone offset UTC only, whereas Acrobat 8 seems -// to use the localtime notation only -// according to a raccomandation in XMP Specification (Jan 2004, page 75) -// the Acrobat way seems the right approach - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/1000)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/100)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year)%10)) ); - m_aCreationMetaDateString.append( "-" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Month/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Month)%10)) ); - m_aCreationMetaDateString.append( "-" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Day/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Day)%10)) ); - m_aCreationMetaDateString.append( "T" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Hours/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Hours)%10)) ); - m_aCreationMetaDateString.append( ":" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Minutes/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Minutes)%10)) ); - m_aCreationMetaDateString.append( ":" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Seconds/10)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Seconds)%10)) ); - } + rtl::OStringBuffer aCreationDateString(64), aCreationMetaDateString(64); + aCreationDateString.append( "D:" ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/1000)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/100)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Year/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Year)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Month/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Month)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Day/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Day)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Hours/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Hours)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Minutes/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Minutes)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Seconds/10)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((aDT.Seconds)%10)) ); + + //--> i59651, we fill the Metadata date string as well, if PDF/A is requested + // according to ISO 19005-1:2005 6.7.3 the date is corrected for + // local time zone offset UTC only, whereas Acrobat 8 seems + // to use the localtime notation only + // according to a raccomandation in XMP Specification (Jan 2004, page 75) + // the Acrobat way seems the right approach + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/1000)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/100)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Year)%10)) ); + aCreationMetaDateString.append( "-" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Month/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Month)%10)) ); + aCreationMetaDateString.append( "-" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Day/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Day)%10)) ); + aCreationMetaDateString.append( "T" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Hours/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Hours)%10)) ); + aCreationMetaDateString.append( ":" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Minutes/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Minutes)%10)) ); + aCreationMetaDateString.append( ":" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Seconds/10)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((aDT.Seconds)%10)) ); + sal_uInt32 nDelta = 0; if( aGMT.Seconds > aTVal.Seconds ) { - m_aCreationDateString.append( "-" ); + aCreationDateString.append( "-" ); nDelta = aGMT.Seconds-aTVal.Seconds; - if( m_bIsPDF_A1 ) - m_aCreationMetaDateString.append( "-" ); + aCreationMetaDateString.append( "-" ); } else if( aGMT.Seconds < aTVal.Seconds ) { - m_aCreationDateString.append( "+" ); + aCreationDateString.append( "+" ); nDelta = aTVal.Seconds-aGMT.Seconds; - if( m_bIsPDF_A1 ) - m_aCreationMetaDateString.append( "+" ); + aCreationMetaDateString.append( "+" ); } else { - m_aCreationDateString.append( "Z" ); - if( m_bIsPDF_A1 ) - m_aCreationMetaDateString.append( "Z" ); + aCreationDateString.append( "Z" ); + aCreationMetaDateString.append( "Z" ); } if( nDelta ) { - m_aCreationDateString.append( (sal_Char)('0' + ((nDelta/36000)%10)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((nDelta/3600)%10)) ); - m_aCreationDateString.append( "'" ); - m_aCreationDateString.append( (sal_Char)('0' + ((nDelta/600)%6)) ); - m_aCreationDateString.append( (sal_Char)('0' + ((nDelta/60)%10)) ); - if( m_bIsPDF_A1 ) - { - m_aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/36000)%10)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/3600)%10)) ); - m_aCreationMetaDateString.append( ":" ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/600)%6)) ); - m_aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/60)%10)) ); - } + aCreationDateString.append( (sal_Char)('0' + ((nDelta/36000)%10)) ); + aCreationDateString.append( (sal_Char)('0' + ((nDelta/3600)%10)) ); + aCreationDateString.append( "'" ); + aCreationDateString.append( (sal_Char)('0' + ((nDelta/600)%6)) ); + aCreationDateString.append( (sal_Char)('0' + ((nDelta/60)%10)) ); + + aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/36000)%10)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/3600)%10)) ); + aCreationMetaDateString.append( ":" ); + aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/600)%6)) ); + aCreationMetaDateString.append( (sal_Char)('0' + ((nDelta/60)%10)) ); } - m_aCreationDateString.append( "'" ); - aID.append( m_aCreationDateString.getStr(), m_aCreationDateString.getLength() ); + aCreationDateString.append( "'" ); + aID.append( aCreationDateString.getStr(), aCreationDateString.getLength() ); aInfoValuesOut = aID.makeStringAndClear(); + o_rCString1 = aCreationDateString.makeStringAndClear(); + o_rCString2 = aCreationMetaDateString.makeStringAndClear(); - DBG_ASSERT( m_aDigest != NULL, "PDFWrite_Impl::setDocInfo: cannot obtain a digest object !" ); - - m_aDocID.setLength( 0 ); - if( m_aDigest ) + rtlDigest aDigest = rtl_digest_createMD5(); + OSL_ENSURE( aDigest != NULL, "PDFWriterImpl::computeDocumentIdentifier: cannot obtain a digest object !" ); + if( aDigest ) { - osl_getSystemTime( &aGMT ); - rtlDigestError nError = rtl_digest_updateMD5( m_aDigest, &aGMT, sizeof( aGMT ) ); - if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, m_aContext.URL.getStr(), m_aContext.URL.getLength()*sizeof(sal_Unicode) ); + rtlDigestError nError = rtl_digest_updateMD5( aDigest, &aGMT, sizeof( aGMT ) ); if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, aInfoValuesOut.getStr(), aInfoValuesOut.getLength() ); + nError = rtl_digest_updateMD5( aDigest, aInfoValuesOut.getStr(), aInfoValuesOut.getLength() ); if( nError == rtl_Digest_E_None ) { -//the binary form of the doc id is needed for encryption stuff - rtl_digest_getMD5( m_aDigest, m_nDocID, 16 ); - for( unsigned int i = 0; i < 16; i++ ) - appendHex( m_nDocID[i], m_aDocID ); + o_rIdentifier = std::vector< sal_uInt8 >( 16, 0 ); + //the binary form of the doc id is needed for encryption stuff + rtl_digest_getMD5( aDigest, &o_rIdentifier[0], 16 ); } } } @@ -1957,7 +1982,7 @@ append the string as unicode hex, encrypted if needed inline void PDFWriterImpl::appendUnicodeTextStringEncrypt( const rtl::OUString& rInString, const sal_Int32 nInObjectNumber, OStringBuffer& rOutBuffer ) { rOutBuffer.append( "<" ); - if( m_aContext.Encrypt ) + if( m_aContext.Encryption.Encrypt() ) { const sal_Unicode* pStr = rInString.getStr(); sal_Int32 nLen = rInString.getLength(); @@ -1994,7 +2019,7 @@ inline void PDFWriterImpl::appendLiteralStringEncrypt( rtl::OStringBuffer& rInSt rOutBuffer.append( "(" ); sal_Int32 nChars = rInString.getLength(); //check for encryption, if ok, encrypt the string, then convert with appndLiteralString - if( m_aContext.Encrypt && checkEncryptionBufferSize( nChars ) ) + if( m_aContext.Encryption.Encrypt() && checkEncryptionBufferSize( nChars ) ) { //encrypt the string in a buffer, then append it enableStringEncryption( nInObjectNumber ); @@ -2384,9 +2409,6 @@ SalLayout* PDFWriterImpl::GetTextLayout( ImplLayoutArgs& rArgs, ImplFontSelectDa sal_Int32 PDFWriterImpl::newPage( sal_Int32 nPageWidth, sal_Int32 nPageHeight, PDFWriter::Orientation eOrientation ) { - if( m_aContext.Encrypt && m_aPages.empty() ) - initEncryption(); - endPage(); m_nCurrentPage = m_aPages.size(); m_aPages.push_back( PDFPage(this, nPageWidth, nPageHeight, eOrientation ) ); @@ -5881,7 +5903,7 @@ bool PDFWriterImpl::emitCatalog() } // viewer preferences, if we had some, then emit if( m_aContext.HideViewerToolbar || - ( m_aContext.Version > PDFWriter::PDF_1_3 && m_aDocInfo.Title.Len() && m_aContext.DisplayPDFDocumentTitle ) || + ( m_aContext.Version > PDFWriter::PDF_1_3 && m_aContext.DocumentInfo.Title.Len() && m_aContext.DisplayPDFDocumentTitle ) || m_aContext.HideViewerMenubar || m_aContext.HideViewerWindowControls || m_aContext.FitWindow || m_aContext.CenterWindow || (m_aContext.FirstPageLeft && m_aContext.PageLayout == PDFWriter::ContinuousFacing ) || @@ -5898,7 +5920,7 @@ bool PDFWriterImpl::emitCatalog() aLine.append( "/FitWindow true\n" ); if( m_aContext.CenterWindow ) aLine.append( "/CenterWindow true\n" ); - if( m_aContext.Version > PDFWriter::PDF_1_3 && m_aDocInfo.Title.Len() && m_aContext.DisplayPDFDocumentTitle ) + if( m_aContext.Version > PDFWriter::PDF_1_3 && m_aContext.DocumentInfo.Title.Len() && m_aContext.DisplayPDFDocumentTitle ) aLine.append( "/DisplayDocTitle true\n" ); if( m_aContext.FirstPageLeft && m_aContext.PageLayout == PDFWriter::ContinuousFacing ) aLine.append( "/Direction/R2L\n" ); @@ -6002,40 +6024,40 @@ sal_Int32 PDFWriterImpl::emitInfoDict( ) aLine.append( nObject ); aLine.append( " 0 obj\n" "<<" ); - if( m_aDocInfo.Title.Len() ) + if( m_aContext.DocumentInfo.Title.Len() ) { aLine.append( "/Title" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Title, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Title, nObject, aLine ); aLine.append( "\n" ); } - if( m_aDocInfo.Author.Len() ) + if( m_aContext.DocumentInfo.Author.Len() ) { aLine.append( "/Author" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Author, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Author, nObject, aLine ); aLine.append( "\n" ); } - if( m_aDocInfo.Subject.Len() ) + if( m_aContext.DocumentInfo.Subject.Len() ) { aLine.append( "/Subject" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Subject, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Subject, nObject, aLine ); aLine.append( "\n" ); } - if( m_aDocInfo.Keywords.Len() ) + if( m_aContext.DocumentInfo.Keywords.Len() ) { aLine.append( "/Keywords" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Keywords, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Keywords, nObject, aLine ); aLine.append( "\n" ); } - if( m_aDocInfo.Creator.Len() ) + if( m_aContext.DocumentInfo.Creator.Len() ) { aLine.append( "/Creator" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Creator, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Creator, nObject, aLine ); aLine.append( "\n" ); } - if( m_aDocInfo.Producer.Len() ) + if( m_aContext.DocumentInfo.Producer.Len() ) { aLine.append( "/Producer" ); - appendUnicodeTextStringEncrypt( m_aDocInfo.Producer, nObject, aLine ); + appendUnicodeTextStringEncrypt( m_aContext.DocumentInfo.Producer, nObject, aLine ); aLine.append( "\n" ); } @@ -6281,45 +6303,45 @@ sal_Int32 PDFWriterImpl::emitDocumentMetadata() aMetadataStream.append( " <pdfaid:conformance>A</pdfaid:conformance>\n" ); aMetadataStream.append( " </rdf:Description>\n" ); //... Dublin Core properties go here - if( m_aDocInfo.Title.Len() || - m_aDocInfo.Author.Len() || - m_aDocInfo.Subject.Len() ) + if( m_aContext.DocumentInfo.Title.Len() || + m_aContext.DocumentInfo.Author.Len() || + m_aContext.DocumentInfo.Subject.Len() ) { aMetadataStream.append( " <rdf:Description rdf:about=\"\"\n" ); aMetadataStream.append( " xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n" ); - if( m_aDocInfo.Title.Len() ) + if( m_aContext.DocumentInfo.Title.Len() ) { // this is according to PDF/A-1, technical corrigendum 1 (2007-04-01) aMetadataStream.append( " <dc:title>\n" ); aMetadataStream.append( " <rdf:Alt>\n" ); aMetadataStream.append( " <rdf:li xml:lang=\"x-default\">" ); rtl::OUString aTitle; - escapeStringXML( m_aDocInfo.Title, aTitle ); + escapeStringXML( m_aContext.DocumentInfo.Title, aTitle ); aMetadataStream.append( OUStringToOString( aTitle, RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</rdf:li>\n" ); aMetadataStream.append( " </rdf:Alt>\n" ); aMetadataStream.append( " </dc:title>\n" ); } - if( m_aDocInfo.Author.Len() ) + if( m_aContext.DocumentInfo.Author.Len() ) { aMetadataStream.append( " <dc:creator>\n" ); aMetadataStream.append( " <rdf:Seq>\n" ); aMetadataStream.append( " <rdf:li>" ); rtl::OUString aAuthor; - escapeStringXML( m_aDocInfo.Author, aAuthor ); + escapeStringXML( m_aContext.DocumentInfo.Author, aAuthor ); aMetadataStream.append( OUStringToOString( aAuthor , RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</rdf:li>\n" ); aMetadataStream.append( " </rdf:Seq>\n" ); aMetadataStream.append( " </dc:creator>\n" ); } - if( m_aDocInfo.Subject.Len() ) + if( m_aContext.DocumentInfo.Subject.Len() ) { // this is according to PDF/A-1, technical corrigendum 1 (2007-04-01) aMetadataStream.append( " <dc:description>\n" ); aMetadataStream.append( " <rdf:Alt>\n" ); aMetadataStream.append( " <rdf:li xml:lang=\"x-default\">" ); rtl::OUString aSubject; - escapeStringXML( m_aDocInfo.Subject, aSubject ); + escapeStringXML( m_aContext.DocumentInfo.Subject, aSubject ); aMetadataStream.append( OUStringToOString( aSubject , RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</rdf:li>\n" ); aMetadataStream.append( " </rdf:Alt>\n" ); @@ -6329,24 +6351,24 @@ sal_Int32 PDFWriterImpl::emitDocumentMetadata() } //... PDF properties go here - if( m_aDocInfo.Producer.Len() || - m_aDocInfo.Keywords.Len() ) + if( m_aContext.DocumentInfo.Producer.Len() || + m_aContext.DocumentInfo.Keywords.Len() ) { aMetadataStream.append( " <rdf:Description rdf:about=\"\"\n" ); aMetadataStream.append( " xmlns:pdf=\"http://ns.adobe.com/pdf/1.3/\">\n" ); - if( m_aDocInfo.Producer.Len() ) + if( m_aContext.DocumentInfo.Producer.Len() ) { aMetadataStream.append( " <pdf:Producer>" ); rtl::OUString aProducer; - escapeStringXML( m_aDocInfo.Producer, aProducer ); + escapeStringXML( m_aContext.DocumentInfo.Producer, aProducer ); aMetadataStream.append( OUStringToOString( aProducer , RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</pdf:Producer>\n" ); } - if( m_aDocInfo.Keywords.Len() ) + if( m_aContext.DocumentInfo.Keywords.Len() ) { aMetadataStream.append( " <pdf:Keywords>" ); rtl::OUString aKeywords; - escapeStringXML( m_aDocInfo.Keywords, aKeywords ); + escapeStringXML( m_aContext.DocumentInfo.Keywords, aKeywords ); aMetadataStream.append( OUStringToOString( aKeywords , RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</pdf:Keywords>\n" ); } @@ -6355,11 +6377,11 @@ sal_Int32 PDFWriterImpl::emitDocumentMetadata() aMetadataStream.append( " <rdf:Description rdf:about=\"\"\n" ); aMetadataStream.append( " xmlns:xmp=\"http://ns.adobe.com/xap/1.0/\">\n" ); - if( m_aDocInfo.Creator.Len() ) + if( m_aContext.DocumentInfo.Creator.Len() ) { aMetadataStream.append( " <xmp:CreatorTool>" ); rtl::OUString aCreator; - escapeStringXML( m_aDocInfo.Creator, aCreator ); + escapeStringXML( m_aContext.DocumentInfo.Creator, aCreator ); aMetadataStream.append( OUStringToOString( aCreator , RTL_TEXTENCODING_UTF8 ) ); aMetadataStream.append( "</xmp:CreatorTool>\n" ); } @@ -6415,7 +6437,7 @@ bool PDFWriterImpl::emitTrailer() sal_Int32 nSecObject = 0; - if( m_aContext.Encrypt == true ) + if( m_aContext.Encryption.Encrypt() ) { //emit the security information //must be emitted as indirect dictionary object, since @@ -6429,16 +6451,16 @@ bool PDFWriterImpl::emitTrailer() aLineS.append( " 0 obj\n" "<</Filter/Standard/V " ); // check the version - if( m_aContext.Security128bit == true ) + if( m_aContext.Encryption.Security128bit ) aLineS.append( "2/Length 128/R 3" ); else aLineS.append( "1/R 2" ); // emit the owner password, must not be encrypted aLineS.append( "/O(" ); - appendLiteralString( (const sal_Char*)m_nEncryptedOwnerPassword, 32, aLineS ); + appendLiteralString( (const sal_Char*)&m_aContext.Encryption.OValue[0], sal_Int32(m_aContext.Encryption.OValue.size()), aLineS ); aLineS.append( ")/U(" ); - appendLiteralString( (const sal_Char*)m_nEncryptedUserPassword, 32, aLineS ); + appendLiteralString( (const sal_Char*)&m_aContext.Encryption.UValue[0], sal_Int32(m_aContext.Encryption.UValue.size()), aLineS ); aLineS.append( ")/P " );// the permission set aLineS.append( m_nAccessPermissions ); aLineS.append( ">>\nendobj\n\n" ); @@ -6504,13 +6526,21 @@ bool PDFWriterImpl::emitTrailer() aLine.append( nDocInfoObject ); aLine.append( " 0 R\n" ); } - if( m_aDocID.getLength() ) + if( ! m_aContext.Encryption.DocumentIdentifier.empty() ) { aLine.append( "/ID [ <" ); - aLine.append( m_aDocID.getStr(), m_aDocID.getLength() ); + for( std::vector< sal_uInt8 >::const_iterator it = m_aContext.Encryption.DocumentIdentifier.begin(); + it != m_aContext.Encryption.DocumentIdentifier.end(); ++it ) + { + appendHex( sal_Int8(*it), aLine ); + } aLine.append( ">\n" "<" ); - aLine.append( m_aDocID.getStr(), m_aDocID.getLength() ); + for( std::vector< sal_uInt8 >::const_iterator it = m_aContext.Encryption.DocumentIdentifier.begin(); + it != m_aContext.Encryption.DocumentIdentifier.end(); ++it ) + { + appendHex( sal_Int8(*it), aLine ); + } aLine.append( "> ]\n" ); } if( aDocChecksum.getLength() ) @@ -7403,7 +7433,14 @@ void PDFWriterImpl::drawLayout( SalLayout& rLayout, const String& rText, bool bT // try to handle ligatures and such if( i < nGlyphs-1 ) { - pUnicodesPerGlyph[i] = nChars = pCharPosAry[i+1] - pCharPosAry[i]; + nChars = pCharPosAry[i+1] - pCharPosAry[i]; + // #i115618# fix for simple RTL+CTL cases + // TODO: sanitize for RTL ligatures, more complex CTL, etc. + if( nChars < 0 ) + nChars = -nChars; + else if( nChars == 0 ) + nChars = 1; + pUnicodesPerGlyph[i] = nChars; for( int n = 1; n < nChars; n++ ) aUnicodes.push_back( rText.GetChar( sal::static_int_cast<xub_StrLen>(pCharPosAry[i]+n) ) ); } @@ -9661,7 +9698,7 @@ bool PDFWriterImpl::writeBitmapObject( BitmapEmit& rObject, bool bMask ) aLine.append( "[ /Indexed/DeviceRGB " ); aLine.append( (sal_Int32)(pAccess->GetPaletteEntryCount()-1) ); aLine.append( "\n<" ); - if( m_aContext.Encrypt ) + if( m_aContext.Encryption.Encrypt() ) { enableStringEncryption( rObject.m_nObject ); //check encryption buffer size @@ -12047,268 +12084,5 @@ void PDFWriterImpl::addStream( const String& rMimeType, PDFOutputStream* pStream } } -/************************************************************* -begin i12626 methods - -Implements Algorithm 3.2, step 1 only -*/ -void PDFWriterImpl::padPassword( rtl::OUString aPassword, sal_uInt8 *paPasswordTarget ) -{ -// get ansi-1252 version of the password string CHECKIT ! i12626 - rtl::OString aString = rtl::OUStringToOString( aPassword, RTL_TEXTENCODING_MS_1252 ); - -//copy the string to the target - sal_Int32 nToCopy = ( aString.getLength() < 32 ) ? aString.getLength() : 32; - sal_Int32 nCurrentChar; - - for( nCurrentChar = 0; nCurrentChar < nToCopy; nCurrentChar++ ) - paPasswordTarget[nCurrentChar] = (sal_uInt8)( aString.getStr()[nCurrentChar] ); - -//pad it - if( nCurrentChar < 32 ) - {//fill with standard byte string - sal_Int32 i,y; - for( i = nCurrentChar, y = 0 ; i < 32; i++, y++ ) - paPasswordTarget[i] = m_nPadString[y]; - } -} - -/********************************** -Algorithm 3.2 Compute the encryption key used - -step 1 should already be done before calling, the paThePaddedPassword parameter should contain -the padded password and must be 32 byte long, the encryption key is returned into the paEncryptionKey parameter, -it will be 16 byte long for 128 bit security; for 40 bit security only the first 5 bytes are used - -TODO: in pdf ver 1.5 and 1.6 the step 6 is different, should be implemented. See spec. - -*/ -void PDFWriterImpl::computeEncryptionKey(sal_uInt8 *paThePaddedPassword, sal_uInt8 *paEncryptionKey ) -{ -//step 2 - if( m_aDigest ) - { - rtlDigestError nError = rtl_digest_updateMD5( m_aDigest, paThePaddedPassword, ENCRYPTED_PWD_SIZE ); -//step 3 - if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, m_nEncryptedOwnerPassword , sizeof( m_nEncryptedOwnerPassword ) ); -//Step 4 - sal_uInt8 nPerm[4]; - - nPerm[0] = (sal_uInt8)m_nAccessPermissions; - nPerm[1] = (sal_uInt8)( m_nAccessPermissions >> 8 ); - nPerm[2] = (sal_uInt8)( m_nAccessPermissions >> 16 ); - nPerm[3] = (sal_uInt8)( m_nAccessPermissions >> 24 ); - - if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, nPerm , sizeof( nPerm ) ); - -//step 5, get the document ID, binary form - if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, m_nDocID , sizeof( m_nDocID ) ); -//get the digest - sal_uInt8 nMD5Sum[ RTL_DIGEST_LENGTH_MD5 ]; - if( nError == rtl_Digest_E_None ) - { - rtl_digest_getMD5( m_aDigest, nMD5Sum, sizeof( nMD5Sum ) ); - -//step 6, only if 128 bit - if( m_aContext.Security128bit ) - { - for( sal_Int32 i = 0; i < 50; i++ ) - { - nError = rtl_digest_updateMD5( m_aDigest, &nMD5Sum, sizeof( nMD5Sum ) ); - if( nError != rtl_Digest_E_None ) - break; - rtl_digest_getMD5( m_aDigest, nMD5Sum, sizeof( nMD5Sum ) ); - } - } - } -//Step 7 - for( sal_Int32 i = 0; i < MD5_DIGEST_SIZE; i++ ) - paEncryptionKey[i] = nMD5Sum[i]; - } -} - -/********************************** -Algorithm 3.3 Compute the encryption dictionary /O value, save into the class data member -the step numbers down here correspond to the ones in PDF v.1.4 specfication -*/ -void PDFWriterImpl::computeODictionaryValue() -{ -//step 1 already done, data is in m_nPaddedOwnerPassword -//step 2 - if( m_aDigest ) - { - rtlDigestError nError = rtl_digest_updateMD5( m_aDigest, &m_nPaddedOwnerPassword, sizeof( m_nPaddedOwnerPassword ) ); - if( nError == rtl_Digest_E_None ) - { - sal_uInt8 nMD5Sum[ RTL_DIGEST_LENGTH_MD5 ]; - - rtl_digest_getMD5( m_aDigest, nMD5Sum, sizeof(nMD5Sum) ); -//step 3, only if 128 bit - if( m_aContext.Security128bit ) - { - sal_Int32 i; - for( i = 0; i < 50; i++ ) - { - nError = rtl_digest_updateMD5( m_aDigest, nMD5Sum, sizeof( nMD5Sum ) ); - if( nError != rtl_Digest_E_None ) - break; - rtl_digest_getMD5( m_aDigest, nMD5Sum, sizeof( nMD5Sum ) ); - } - } -//Step 4, the key is in nMD5Sum -//step 5 already done, data is in m_nPaddedUserPassword -//step 6 - rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, - nMD5Sum, m_nKeyLength , NULL, 0 ); -// encrypt the user password using the key set above - rtl_cipher_encodeARCFOUR( m_aCipher, m_nPaddedUserPassword, sizeof( m_nPaddedUserPassword ), // the data to be encrypted - m_nEncryptedOwnerPassword, sizeof( m_nEncryptedOwnerPassword ) ); //encrypted data, stored in class data member -//Step 7, only if 128 bit - if( m_aContext.Security128bit ) - { - sal_uInt32 i, y; - sal_uInt8 nLocalKey[ SECUR_128BIT_KEY ]; // 16 = 128 bit key - for( i = 1; i <= 19; i++ ) // do it 19 times, start with 1 - { - for( y = 0; y < sizeof( nLocalKey ); y++ ) - nLocalKey[y] = (sal_uInt8)( nMD5Sum[y] ^ i ); - - rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, - nLocalKey, SECUR_128BIT_KEY, NULL, 0 ); //destination data area, on init can be NULL - rtl_cipher_encodeARCFOUR( m_aCipher, m_nEncryptedOwnerPassword, sizeof( m_nEncryptedOwnerPassword ), // the data to be encrypted - m_nEncryptedOwnerPassword, sizeof( m_nEncryptedOwnerPassword ) ); // encrypted data, can be the same as the input, encrypt "in place" -//step 8, store in class data member - } - } - } - } -} - -/********************************** -Algorithms 3.4 and 3.5 Compute the encryption dictionary /U value, save into the class data member, revision 2 (40 bit) or 3 (128 bit) -*/ -void PDFWriterImpl::computeUDictionaryValue() -{ -//step 1, common to both 3.4 and 3.5 - computeEncryptionKey( m_nPaddedUserPassword , m_nEncryptionKey ); - - if( m_aContext.Security128bit == false ) - { -//3.4 -//step 2 and 3 - rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, - m_nEncryptionKey, 5 , // key and key length - NULL, 0 ); //destination data area -// encrypt the user password using the key set above, save for later use - rtl_cipher_encodeARCFOUR( m_aCipher, m_nPadString, sizeof( m_nPadString ), // the data to be encrypted - m_nEncryptedUserPassword, sizeof( m_nEncryptedUserPassword ) ); //encrypted data, stored in class data member - } - else - { -//or 3.5, for 128 bit security -//step6, initilize the last 16 bytes of the encrypted user password to 0 - for(sal_uInt32 i = MD5_DIGEST_SIZE; i < sizeof( m_nEncryptedUserPassword ); i++) - m_nEncryptedUserPassword[i] = 0; -//step 2 - if( m_aDigest ) - { - rtlDigestError nError = rtl_digest_updateMD5( m_aDigest, m_nPadString, sizeof( m_nPadString ) ); -//step 3 - if( nError == rtl_Digest_E_None ) - nError = rtl_digest_updateMD5( m_aDigest, m_nDocID , sizeof(m_nDocID) ); - - sal_uInt8 nMD5Sum[ RTL_DIGEST_LENGTH_MD5 ]; - rtl_digest_getMD5( m_aDigest, nMD5Sum, sizeof(nMD5Sum) ); -//Step 4 - rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, - m_nEncryptionKey, SECUR_128BIT_KEY, NULL, 0 ); //destination data area - rtl_cipher_encodeARCFOUR( m_aCipher, nMD5Sum, sizeof( nMD5Sum ), // the data to be encrypted - m_nEncryptedUserPassword, sizeof( nMD5Sum ) ); //encrypted data, stored in class data member -//step 5 - sal_uInt32 i, y; - sal_uInt8 nLocalKey[SECUR_128BIT_KEY]; - - for( i = 1; i <= 19; i++ ) // do it 19 times, start with 1 - { - for( y = 0; y < sizeof( nLocalKey ) ; y++ ) - nLocalKey[y] = (sal_uInt8)( m_nEncryptionKey[y] ^ i ); - - rtl_cipher_initARCFOUR( m_aCipher, rtl_Cipher_DirectionEncode, - nLocalKey, SECUR_128BIT_KEY, // key and key length - NULL, 0 ); //destination data area, on init can be NULL - rtl_cipher_encodeARCFOUR( m_aCipher, m_nEncryptedUserPassword, SECUR_128BIT_KEY, // the data to be encrypted - m_nEncryptedUserPassword, SECUR_128BIT_KEY ); // encrypted data, can be the same as the input, encrypt "in place" - } - } - } -} - -/* init the encryption engine -1. init the document id, used both for building the document id and for building the encryption key(s) -2. build the encryption key following algorithms described in the PDF specification - */ -void PDFWriterImpl::initEncryption() -{ - m_aOwnerPassword = m_aContext.OwnerPassword; - m_aUserPassword = m_aContext.UserPassword; -/* password stuff computing, before sending out anything */ - DBG_ASSERT( m_aCipher != NULL, "PDFWriterImpl::initEncryption: a cipher (ARCFOUR) object is not available !" ); - DBG_ASSERT( m_aDigest != NULL, "PDFWriterImpl::initEncryption: a digest (MD5) object is not available !" ); - - if( m_aCipher && m_aDigest ) - { -//if there is no owner password, force it to the user password - if( m_aOwnerPassword.getLength() == 0 ) - m_aOwnerPassword = m_aUserPassword; - - initPadString(); -/* -1) pad passwords -*/ - padPassword( m_aOwnerPassword, m_nPaddedOwnerPassword ); - padPassword( m_aUserPassword, m_nPaddedUserPassword ); -/* -2) compute the access permissions, in numerical form - -the default value depends on the revision 2 (40 bit) or 3 (128 bit security): -- for 40 bit security the unused bit must be set to 1, since they are not used -- for 128 bit security the same bit must be preset to 0 and set later if needed -according to the table 3.15, pdf v 1.4 */ - m_nAccessPermissions = ( m_aContext.Security128bit ) ? 0xfffff0c0 : 0xffffffc0 ; - -/* check permissions for 40 bit security case */ - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanPrintTheDocument ) ? 1 << 2 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanModifyTheContent ) ? 1 << 3 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanCopyOrExtract ) ? 1 << 4 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanAddOrModify ) ? 1 << 5 : 0; - m_nKeyLength = SECUR_40BIT_KEY; - m_nRC4KeyLength = SECUR_40BIT_KEY+5; // for this value see PDF spec v 1.4, algorithm 3.1 step 4, where n is 5 - - if( m_aContext.Security128bit ) - { - m_nKeyLength = SECUR_128BIT_KEY; - m_nRC4KeyLength = 16; // for this value see PDF spec v 1.4, algorithm 3.1 step 4, where n is 16, thus maximum - // permitted value is 16 - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanFillInteractive ) ? 1 << 8 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanExtractForAccessibility ) ? 1 << 9 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanAssemble ) ? 1 << 10 : 0; - m_nAccessPermissions |= ( m_aContext.AccessPermissions.CanPrintFull ) ? 1 << 11 : 0; - } - computeODictionaryValue(); - computeUDictionaryValue(); - -//clear out exceding key values, prepares for generation number default to 0 as well -// see checkAndEnableStreamEncryption in pdfwriter_impl.hxx - sal_Int32 i, y; - for( i = m_nKeyLength, y = 0; y < 5 ; y++ ) - m_nEncryptionKey[i++] = 0; - } - else //either no cipher or no digest or both, something is wrong with memory or something else - m_aContext.Encrypt = false; //then turn the encryption off -} -/* end i12626 methods */ |